mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-27 23:02:20 +00:00
Bug 1479665: update libsrtp to bb0412ee84ebe3d2916b45b19de72fabb183d9db. r=bwc
update libsrtp to bb0412ee84ebe3d2916b45b19de72fabb183d9db Differential Revision: https://phabricator.services.mozilla.com/D5732 --HG-- extra : moz-landing-system : lando
This commit is contained in:
Nils Ohlmeier [:drno]
parent
77d354dda1
commit
88b946bb6b
119
netwerk/srtp/src/crypto/Makefile.in
Normal file
119
netwerk/srtp/src/crypto/Makefile.in
Normal file
@ -0,0 +1,119 @@
|
||||
# Makefile for crypto test suite
|
||||
#
|
||||
# David A. McGrew
|
||||
# Cisco Systems, Inc.
|
||||
|
||||
srcdir = @srcdir@
|
||||
top_srcdir = @top_srcdir@
|
||||
top_builddir = @top_builddir@
|
||||
VPATH = @srcdir@
|
||||
|
||||
CC = @CC@
|
||||
INCDIR = -Iinclude -I$(srcdir)/include -I$(top_srcdir)/include
|
||||
DEFS = @DEFS@
|
||||
CPPFLAGS= @CPPFLAGS@
|
||||
CFLAGS = @CFLAGS@
|
||||
LIBS = @LIBS@
|
||||
LDFLAGS = @LDFLAGS@ -L. -L..
|
||||
COMPILE = $(CC) $(DEFS) $(INCDIR) $(CPPFLAGS) $(CFLAGS)
|
||||
CRYPTOLIB = -lsrtp2
|
||||
CRYPTO_LIBDIR = @CRYPTO_LIBDIR@
|
||||
|
||||
RANLIB = @RANLIB@
|
||||
|
||||
# Specify how tests should find shared libraries on macOS and Linux
|
||||
#
|
||||
# macOS purges DYLD_LIBRARY_PATH when spawning subprocesses, so it's
|
||||
# not possible to pass this in from the outside; we have to specify
|
||||
# it for any subprocesses we call. No support for dynamic linked
|
||||
# tests on Windows.
|
||||
ifneq ($(strip $(CRYPTO_LIBDIR)),)
|
||||
ifneq ($(OS),Windows_NT)
|
||||
UNAME_S = $(shell uname -s)
|
||||
ifeq ($(UNAME_S),Linux)
|
||||
FIND_LIBRARIES = LD_LIBRARY_PATH=$(CRYPTO_LIBDIR)
|
||||
endif
|
||||
ifeq ($(UNAME_S),Darwin)
|
||||
FIND_LIBRARIES = DYLD_LIBRARY_PATH=$(CRYPTO_LIBDIR)
|
||||
endif
|
||||
endif
|
||||
endif
|
||||
|
||||
# EXE defines the suffix on executables - it's .exe for cygwin, and
|
||||
# null on linux, bsd, and OS X and other OSes. we define this so that
|
||||
# `make clean` will work on the cygwin platform
|
||||
EXE = @EXE@
|
||||
# Random source.
|
||||
USE_EXTERNAL_CRYPTO = @USE_EXTERNAL_CRYPTO@
|
||||
|
||||
ifdef ARCH
|
||||
DEFS += -D$(ARCH)=1
|
||||
endif
|
||||
|
||||
ifdef sysname
|
||||
DEFS += -D$(sysname)=1
|
||||
endif
|
||||
|
||||
.PHONY: dummy all runtest clean superclean
|
||||
|
||||
dummy : all runtest
|
||||
|
||||
# test applications
|
||||
ifneq (1, $(USE_EXTERNAL_CRYPTO))
|
||||
AES_CALC = test/aes_calc$(EXE)
|
||||
endif
|
||||
|
||||
testapp = test/cipher_driver$(EXE) test/datatypes_driver$(EXE) \
|
||||
test/stat_driver$(EXE) test/sha1_driver$(EXE) \
|
||||
test/kernel_driver$(EXE) $(AES_CALC) \
|
||||
test/env$(EXE)
|
||||
|
||||
# data values used to test the aes_calc application for AES-128
|
||||
k128=000102030405060708090a0b0c0d0e0f
|
||||
p128=00112233445566778899aabbccddeeff
|
||||
c128=69c4e0d86a7b0430d8cdb78070b4c55a
|
||||
|
||||
|
||||
# data values used to test the aes_calc application for AES-256
|
||||
k256=000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f
|
||||
p256=00112233445566778899aabbccddeeff
|
||||
c256=8ea2b7ca516745bfeafc49904b496089
|
||||
|
||||
|
||||
runtest: $(testapp)
|
||||
$(FIND_LIBRARIES) test/env$(EXE) # print out information on the build environment
|
||||
@echo "running crypto test applications..."
|
||||
ifneq (1, $(USE_EXTERNAL_CRYPTO))
|
||||
$(FIND_LIBRARIES) test `test/aes_calc $(k128) $(p128)` = $(c128)
|
||||
$(FIND_LIBRARIES) test `test/aes_calc $(k256) $(p256)` = $(c256)
|
||||
endif
|
||||
$(FIND_LIBRARIES) test/cipher_driver$(EXE) -v >/dev/null
|
||||
$(FIND_LIBRARIES) test/datatypes_driver$(EXE) -v >/dev/null
|
||||
$(FIND_LIBRARIES) test/stat_driver$(EXE) >/dev/null
|
||||
$(FIND_LIBRARIES) test/sha1_driver$(EXE) -v >/dev/null
|
||||
$(FIND_LIBRARIES) test/kernel_driver$(EXE) -v >/dev/null
|
||||
@echo "crypto test applications passed."
|
||||
|
||||
|
||||
# the rule for making object files and test apps
|
||||
|
||||
%.o: %.c
|
||||
$(COMPILE) -c $< -o $@
|
||||
|
||||
%$(EXE): %.c $(srcdir)/../test/getopt_s.c
|
||||
$(COMPILE) $(LDFLAGS) $< $(srcdir)/../test/getopt_s.c -o $@ $(CRYPTOLIB) $(LIBS)
|
||||
|
||||
all: $(testapp)
|
||||
|
||||
# housekeeping functions
|
||||
|
||||
clean:
|
||||
rm -f $(testapp) *.o */*.o
|
||||
for a in * .* */*; do if [ -f "$$a~" ] ; then rm $$a~; fi; done;
|
||||
rm -f `find . -name "*.[ch]~*~"`
|
||||
rm -rf latex
|
||||
|
||||
superclean: clean
|
||||
rm -f *core TAGS ktrace.out
|
||||
|
||||
# EOF
|
||||
596
netwerk/srtp/src/crypto/cipher/aes_gcm_nss.c
Normal file
596
netwerk/srtp/src/crypto/cipher/aes_gcm_nss.c
Normal file
@ -0,0 +1,596 @@
|
||||
/*
|
||||
* aes_gcm_nss.c
|
||||
*
|
||||
* AES Galois Counter Mode
|
||||
*
|
||||
* Richard L. Barnes
|
||||
* Cisco Systems, Inc.
|
||||
*
|
||||
*/
|
||||
|
||||
/*
|
||||
*
|
||||
* Copyright (c) 2013-2017, Cisco Systems, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
*
|
||||
* Redistributions in binary form must reproduce the above
|
||||
* copyright notice, this list of conditions and the following
|
||||
* disclaimer in the documentation and/or other materials provided
|
||||
* with the distribution.
|
||||
*
|
||||
* Neither the name of the Cisco Systems, Inc. nor the names of its
|
||||
* contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
|
||||
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||||
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||||
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
||||
* OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
*/
|
||||
|
||||
#ifdef HAVE_CONFIG_H
|
||||
#include <config.h>
|
||||
#endif
|
||||
|
||||
#include "aes_gcm.h"
|
||||
#include "alloc.h"
|
||||
#include "err.h" /* for srtp_debug */
|
||||
#include "crypto_types.h"
|
||||
#include "cipher_types.h"
|
||||
#include <nss.h>
|
||||
#include <secerr.h>
|
||||
#include <nspr.h>
|
||||
|
||||
srtp_debug_module_t srtp_mod_aes_gcm = {
|
||||
0, /* debugging is off by default */
|
||||
"aes gcm nss" /* printable module name */
|
||||
};
|
||||
|
||||
/*
|
||||
* For now we only support 8 and 16 octet tags. The spec allows for
|
||||
* optional 12 byte tag, which may be supported in the future.
|
||||
*/
|
||||
#define GCM_IV_LEN 12
|
||||
#define GCM_AUTH_TAG_LEN 16
|
||||
#define GCM_AUTH_TAG_LEN_8 8
|
||||
|
||||
/*
|
||||
* This function allocates a new instance of this crypto engine.
|
||||
* The key_len parameter should be one of 28 or 44 for
|
||||
* AES-128-GCM or AES-256-GCM respectively. Note that the
|
||||
* key length includes the 14 byte salt value that is used when
|
||||
* initializing the KDF.
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_gcm_nss_alloc(srtp_cipher_t **c,
|
||||
int key_len,
|
||||
int tlen)
|
||||
{
|
||||
srtp_aes_gcm_ctx_t *gcm;
|
||||
|
||||
debug_print(srtp_mod_aes_gcm, "allocating cipher with key length %d",
|
||||
key_len);
|
||||
debug_print(srtp_mod_aes_gcm, "allocating cipher with tag length %d", tlen);
|
||||
|
||||
/*
|
||||
* Verify the key_len is valid for one of: AES-128/256
|
||||
*/
|
||||
if (key_len != SRTP_AES_GCM_128_KEY_LEN_WSALT &&
|
||||
key_len != SRTP_AES_GCM_256_KEY_LEN_WSALT) {
|
||||
return (srtp_err_status_bad_param);
|
||||
}
|
||||
|
||||
if (tlen != GCM_AUTH_TAG_LEN && tlen != GCM_AUTH_TAG_LEN_8) {
|
||||
return (srtp_err_status_bad_param);
|
||||
}
|
||||
|
||||
/* Initialize NSS */
|
||||
if (!NSS_IsInitialized() && NSS_NoDB_Init(NULL) != SECSuccess) {
|
||||
return (srtp_err_status_cipher_fail);
|
||||
}
|
||||
|
||||
/* allocate memory a cipher of type aes_gcm */
|
||||
*c = (srtp_cipher_t *)srtp_crypto_alloc(sizeof(srtp_cipher_t));
|
||||
if (*c == NULL) {
|
||||
return (srtp_err_status_alloc_fail);
|
||||
}
|
||||
|
||||
gcm = (srtp_aes_gcm_ctx_t *)srtp_crypto_alloc(sizeof(srtp_aes_gcm_ctx_t));
|
||||
if (gcm == NULL) {
|
||||
srtp_crypto_free(*c);
|
||||
*c = NULL;
|
||||
return (srtp_err_status_alloc_fail);
|
||||
}
|
||||
|
||||
/* set pointers */
|
||||
(*c)->state = gcm;
|
||||
|
||||
/* setup cipher attributes */
|
||||
switch (key_len) {
|
||||
case SRTP_AES_GCM_128_KEY_LEN_WSALT:
|
||||
(*c)->type = &srtp_aes_gcm_128;
|
||||
(*c)->algorithm = SRTP_AES_GCM_128;
|
||||
gcm->key_size = SRTP_AES_128_KEY_LEN;
|
||||
gcm->tag_size = tlen;
|
||||
gcm->params.ulTagBits = 8 * tlen;
|
||||
break;
|
||||
case SRTP_AES_GCM_256_KEY_LEN_WSALT:
|
||||
(*c)->type = &srtp_aes_gcm_256;
|
||||
(*c)->algorithm = SRTP_AES_GCM_256;
|
||||
gcm->key_size = SRTP_AES_256_KEY_LEN;
|
||||
gcm->tag_size = tlen;
|
||||
gcm->params.ulTagBits = 8 * tlen;
|
||||
break;
|
||||
default:
|
||||
/* this should never hit, but to be sure... */
|
||||
return (srtp_err_status_bad_param);
|
||||
}
|
||||
|
||||
/* set key size and tag size*/
|
||||
(*c)->key_len = key_len;
|
||||
|
||||
return (srtp_err_status_ok);
|
||||
}
|
||||
|
||||
/*
|
||||
* This function deallocates a GCM session
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_gcm_nss_dealloc(srtp_cipher_t *c)
|
||||
{
|
||||
srtp_aes_gcm_ctx_t *ctx;
|
||||
|
||||
ctx = (srtp_aes_gcm_ctx_t *)c->state;
|
||||
if (ctx) {
|
||||
/* release NSS resources */
|
||||
if (ctx->key) {
|
||||
PK11_FreeSymKey(ctx->key);
|
||||
}
|
||||
|
||||
/* zeroize the key material */
|
||||
octet_string_set_to_zero(ctx, sizeof(srtp_aes_gcm_ctx_t));
|
||||
srtp_crypto_free(ctx);
|
||||
}
|
||||
|
||||
/* free memory */
|
||||
srtp_crypto_free(c);
|
||||
|
||||
return (srtp_err_status_ok);
|
||||
}
|
||||
|
||||
/*
|
||||
* aes_gcm_nss_context_init(...) initializes the aes_gcm_context
|
||||
* using the value in key[].
|
||||
*
|
||||
* the key is the secret key
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_gcm_nss_context_init(void *cv,
|
||||
const uint8_t *key)
|
||||
{
|
||||
srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv;
|
||||
|
||||
c->dir = srtp_direction_any;
|
||||
|
||||
debug_print(srtp_mod_aes_gcm, "key: %s",
|
||||
srtp_octet_string_hex_string(key, c->key_size));
|
||||
|
||||
if (c->key) {
|
||||
PK11_FreeSymKey(c->key);
|
||||
c->key = NULL;
|
||||
}
|
||||
|
||||
PK11SlotInfo *slot = PK11_GetBestSlot(CKM_AES_GCM, NULL);
|
||||
if (!slot) {
|
||||
return (srtp_err_status_cipher_fail);
|
||||
}
|
||||
|
||||
SECItem key_item = { siBuffer, (unsigned char *)key, c->key_size };
|
||||
c->key = PK11_ImportSymKey(slot, CKM_AES_GCM, PK11_OriginUnwrap,
|
||||
CKA_ENCRYPT, &key_item, NULL);
|
||||
PK11_FreeSlot(slot);
|
||||
|
||||
if (!c->key) {
|
||||
return (srtp_err_status_cipher_fail);
|
||||
}
|
||||
|
||||
return (srtp_err_status_ok);
|
||||
}
|
||||
|
||||
/*
|
||||
* aes_gcm_nss_set_iv(c, iv) sets the counter value to the exor of iv with
|
||||
* the offset
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_gcm_nss_set_iv(
|
||||
void *cv,
|
||||
uint8_t *iv,
|
||||
srtp_cipher_direction_t direction)
|
||||
{
|
||||
srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv;
|
||||
|
||||
if (direction != srtp_direction_encrypt &&
|
||||
direction != srtp_direction_decrypt) {
|
||||
return (srtp_err_status_bad_param);
|
||||
}
|
||||
c->dir = direction;
|
||||
|
||||
debug_print(srtp_mod_aes_gcm, "setting iv: %s",
|
||||
srtp_octet_string_hex_string(iv, GCM_IV_LEN));
|
||||
|
||||
memcpy(c->iv, iv, GCM_IV_LEN);
|
||||
|
||||
return (srtp_err_status_ok);
|
||||
}
|
||||
|
||||
/*
|
||||
* This function processes the AAD
|
||||
*
|
||||
* Parameters:
|
||||
* c Crypto context
|
||||
* aad Additional data to process for AEAD cipher suites
|
||||
* aad_len length of aad buffer
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_gcm_nss_set_aad(void *cv,
|
||||
const uint8_t *aad,
|
||||
uint32_t aad_len)
|
||||
{
|
||||
srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv;
|
||||
|
||||
debug_print(srtp_mod_aes_gcm, "setting AAD: %s",
|
||||
srtp_octet_string_hex_string(aad, aad_len));
|
||||
|
||||
if (aad_len + c->aad_size > MAX_AD_SIZE) {
|
||||
return srtp_err_status_bad_param;
|
||||
}
|
||||
|
||||
memcpy(c->aad + c->aad_size, aad, aad_len);
|
||||
c->aad_size += aad_len;
|
||||
|
||||
return (srtp_err_status_ok);
|
||||
}
|
||||
|
||||
static srtp_err_status_t srtp_aes_gcm_nss_do_crypto(void *cv,
|
||||
int encrypt,
|
||||
unsigned char *buf,
|
||||
unsigned int *enc_len)
|
||||
{
|
||||
srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv;
|
||||
|
||||
c->params.pIv = c->iv;
|
||||
c->params.ulIvLen = GCM_IV_LEN;
|
||||
c->params.pAAD = c->aad;
|
||||
c->params.ulAADLen = c->aad_size;
|
||||
|
||||
// Reset AAD
|
||||
c->aad_size = 0;
|
||||
|
||||
int rv;
|
||||
SECItem param = { siBuffer, (unsigned char *)&c->params,
|
||||
sizeof(CK_GCM_PARAMS) };
|
||||
if (encrypt) {
|
||||
rv = PK11_Encrypt(c->key, CKM_AES_GCM, ¶m, buf, enc_len,
|
||||
*enc_len + 16, buf, *enc_len);
|
||||
} else {
|
||||
rv = PK11_Decrypt(c->key, CKM_AES_GCM, ¶m, buf, enc_len, *enc_len,
|
||||
buf, *enc_len);
|
||||
}
|
||||
|
||||
srtp_err_status_t status = (srtp_err_status_ok);
|
||||
if (rv != SECSuccess) {
|
||||
status = (srtp_err_status_cipher_fail);
|
||||
}
|
||||
|
||||
return status;
|
||||
}
|
||||
|
||||
/*
|
||||
* This function encrypts a buffer using AES GCM mode
|
||||
*
|
||||
* XXX(rlb@ipv.sx): We're required to break off and cache the tag
|
||||
* here, because the get_tag() method is separate and the tests expect
|
||||
* encrypt() not to change the size of the plaintext. It might be
|
||||
* good to update the calling API so that this is cleaner.
|
||||
*
|
||||
* Parameters:
|
||||
* c Crypto context
|
||||
* buf data to encrypt
|
||||
* enc_len length of encrypt buffer
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_gcm_nss_encrypt(void *cv,
|
||||
unsigned char *buf,
|
||||
unsigned int *enc_len)
|
||||
{
|
||||
srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv;
|
||||
|
||||
// When we get a non-NULL buffer, we know that the caller is
|
||||
// prepared to also take the tag. When we get a NULL buffer,
|
||||
// even though there's no data, we need to give NSS a buffer
|
||||
// where it can write the tag. We can't just use c->tag because
|
||||
// memcpy has undefined behavior on overlapping ranges.
|
||||
unsigned char tagbuf[16];
|
||||
unsigned char *non_null_buf = buf;
|
||||
if (!non_null_buf && (*enc_len == 0)) {
|
||||
non_null_buf = tagbuf;
|
||||
} else if (!non_null_buf) {
|
||||
return srtp_err_status_bad_param;
|
||||
}
|
||||
|
||||
srtp_err_status_t status =
|
||||
srtp_aes_gcm_nss_do_crypto(cv, 1, non_null_buf, enc_len);
|
||||
if (status != srtp_err_status_ok) {
|
||||
return status;
|
||||
}
|
||||
|
||||
memcpy(c->tag, non_null_buf + (*enc_len - c->tag_size), c->tag_size);
|
||||
*enc_len -= c->tag_size;
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
/*
|
||||
* This function calculates and returns the GCM tag for a given context.
|
||||
* This should be called after encrypting the data. The *len value
|
||||
* is increased by the tag size. The caller must ensure that *buf has
|
||||
* enough room to accept the appended tag.
|
||||
*
|
||||
* Parameters:
|
||||
* c Crypto context
|
||||
* buf data to encrypt
|
||||
* len length of encrypt buffer
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_gcm_nss_get_tag(void *cv,
|
||||
uint8_t *buf,
|
||||
uint32_t *len)
|
||||
{
|
||||
srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv;
|
||||
*len = c->tag_size;
|
||||
memcpy(buf, c->tag, c->tag_size);
|
||||
return (srtp_err_status_ok);
|
||||
}
|
||||
|
||||
/*
|
||||
* This function decrypts a buffer using AES GCM mode
|
||||
*
|
||||
* Parameters:
|
||||
* c Crypto context
|
||||
* buf data to encrypt
|
||||
* enc_len length of encrypt buffer
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_gcm_nss_decrypt(void *cv,
|
||||
unsigned char *buf,
|
||||
unsigned int *enc_len)
|
||||
{
|
||||
srtp_err_status_t status = srtp_aes_gcm_nss_do_crypto(cv, 0, buf, enc_len);
|
||||
if (status != srtp_err_status_ok) {
|
||||
int err = PR_GetError();
|
||||
if (err == SEC_ERROR_BAD_DATA) {
|
||||
status = srtp_err_status_auth_fail;
|
||||
}
|
||||
}
|
||||
|
||||
return status;
|
||||
}
|
||||
|
||||
/*
|
||||
* Name of this crypto engine
|
||||
*/
|
||||
static const char srtp_aes_gcm_128_nss_description[] = "AES-128 GCM using NSS";
|
||||
static const char srtp_aes_gcm_256_nss_description[] = "AES-256 GCM using NSS";
|
||||
|
||||
/*
|
||||
* KAT values for AES self-test. These
|
||||
* values we're derived from independent test code
|
||||
* using OpenSSL.
|
||||
*/
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_test_case_0_key[SRTP_AES_GCM_128_KEY_LEN_WSALT] = {
|
||||
0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
|
||||
0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08,
|
||||
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
|
||||
0x09, 0x0a, 0x0b, 0x0c,
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static uint8_t srtp_aes_gcm_test_case_0_iv[12] = {
|
||||
0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad,
|
||||
0xde, 0xca, 0xf8, 0x88
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_test_case_0_plaintext[60] = {
|
||||
0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5,
|
||||
0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a,
|
||||
0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda,
|
||||
0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72,
|
||||
0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53,
|
||||
0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25,
|
||||
0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57,
|
||||
0xba, 0x63, 0x7b, 0x39
|
||||
};
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_test_case_0_aad[20] = {
|
||||
0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
|
||||
0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
|
||||
0xab, 0xad, 0xda, 0xd2
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_test_case_0_ciphertext[76] = {
|
||||
0x42, 0x83, 0x1e, 0xc2, 0x21, 0x77, 0x74, 0x24,
|
||||
0x4b, 0x72, 0x21, 0xb7, 0x84, 0xd0, 0xd4, 0x9c,
|
||||
0xe3, 0xaa, 0x21, 0x2f, 0x2c, 0x02, 0xa4, 0xe0,
|
||||
0x35, 0xc1, 0x7e, 0x23, 0x29, 0xac, 0xa1, 0x2e,
|
||||
0x21, 0xd5, 0x14, 0xb2, 0x54, 0x66, 0x93, 0x1c,
|
||||
0x7d, 0x8f, 0x6a, 0x5a, 0xac, 0x84, 0xaa, 0x05,
|
||||
0x1b, 0xa3, 0x0b, 0x39, 0x6a, 0x0a, 0xac, 0x97,
|
||||
0x3d, 0x58, 0xe0, 0x91,
|
||||
/* the last 16 bytes are the tag */
|
||||
0x5b, 0xc9, 0x4f, 0xbc, 0x32, 0x21, 0xa5, 0xdb,
|
||||
0x94, 0xfa, 0xe9, 0x5a, 0xe7, 0x12, 0x1a, 0x47,
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
static const srtp_cipher_test_case_t srtp_aes_gcm_test_case_0a = {
|
||||
SRTP_AES_GCM_128_KEY_LEN_WSALT, /* octets in key */
|
||||
srtp_aes_gcm_test_case_0_key, /* key */
|
||||
srtp_aes_gcm_test_case_0_iv, /* packet index */
|
||||
60, /* octets in plaintext */
|
||||
srtp_aes_gcm_test_case_0_plaintext, /* plaintext */
|
||||
68, /* octets in ciphertext */
|
||||
srtp_aes_gcm_test_case_0_ciphertext, /* ciphertext + tag */
|
||||
20, /* octets in AAD */
|
||||
srtp_aes_gcm_test_case_0_aad, /* AAD */
|
||||
GCM_AUTH_TAG_LEN_8, /* */
|
||||
NULL /* pointer to next testcase */
|
||||
};
|
||||
|
||||
static const srtp_cipher_test_case_t srtp_aes_gcm_test_case_0 = {
|
||||
SRTP_AES_GCM_128_KEY_LEN_WSALT, /* octets in key */
|
||||
srtp_aes_gcm_test_case_0_key, /* key */
|
||||
srtp_aes_gcm_test_case_0_iv, /* packet index */
|
||||
60, /* octets in plaintext */
|
||||
srtp_aes_gcm_test_case_0_plaintext, /* plaintext */
|
||||
76, /* octets in ciphertext */
|
||||
srtp_aes_gcm_test_case_0_ciphertext, /* ciphertext + tag */
|
||||
20, /* octets in AAD */
|
||||
srtp_aes_gcm_test_case_0_aad, /* AAD */
|
||||
GCM_AUTH_TAG_LEN, /* */
|
||||
&srtp_aes_gcm_test_case_0a /* pointer to next testcase */
|
||||
};
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_test_case_1_key[SRTP_AES_GCM_256_KEY_LEN_WSALT] = {
|
||||
0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
|
||||
0xa5, 0x59, 0x09, 0xc5, 0x54, 0x66, 0x93, 0x1c,
|
||||
0xaf, 0xf5, 0x26, 0x9a, 0x21, 0xd5, 0x14, 0xb2,
|
||||
0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08,
|
||||
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
|
||||
0x09, 0x0a, 0x0b, 0x0c,
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static uint8_t srtp_aes_gcm_test_case_1_iv[12] = {
|
||||
0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad,
|
||||
0xde, 0xca, 0xf8, 0x88
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_test_case_1_plaintext[60] = {
|
||||
0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5,
|
||||
0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a,
|
||||
0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda,
|
||||
0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72,
|
||||
0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53,
|
||||
0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25,
|
||||
0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57,
|
||||
0xba, 0x63, 0x7b, 0x39
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_test_case_1_aad[20] = {
|
||||
0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
|
||||
0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
|
||||
0xab, 0xad, 0xda, 0xd2
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_test_case_1_ciphertext[76] = {
|
||||
0x0b, 0x11, 0xcf, 0xaf, 0x68, 0x4d, 0xae, 0x46,
|
||||
0xc7, 0x90, 0xb8, 0x8e, 0xb7, 0x6a, 0x76, 0x2a,
|
||||
0x94, 0x82, 0xca, 0xab, 0x3e, 0x39, 0xd7, 0x86,
|
||||
0x1b, 0xc7, 0x93, 0xed, 0x75, 0x7f, 0x23, 0x5a,
|
||||
0xda, 0xfd, 0xd3, 0xe2, 0x0e, 0x80, 0x87, 0xa9,
|
||||
0x6d, 0xd7, 0xe2, 0x6a, 0x7d, 0x5f, 0xb4, 0x80,
|
||||
0xef, 0xef, 0xc5, 0x29, 0x12, 0xd1, 0xaa, 0x10,
|
||||
0x09, 0xc9, 0x86, 0xc1,
|
||||
/* the last 16 bytes are the tag */
|
||||
0x45, 0xbc, 0x03, 0xe6, 0xe1, 0xac, 0x0a, 0x9f,
|
||||
0x81, 0xcb, 0x8e, 0x5b, 0x46, 0x65, 0x63, 0x1d,
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
static const srtp_cipher_test_case_t srtp_aes_gcm_test_case_1a = {
|
||||
SRTP_AES_GCM_256_KEY_LEN_WSALT, /* octets in key */
|
||||
srtp_aes_gcm_test_case_1_key, /* key */
|
||||
srtp_aes_gcm_test_case_1_iv, /* packet index */
|
||||
60, /* octets in plaintext */
|
||||
srtp_aes_gcm_test_case_1_plaintext, /* plaintext */
|
||||
68, /* octets in ciphertext */
|
||||
srtp_aes_gcm_test_case_1_ciphertext, /* ciphertext + tag */
|
||||
20, /* octets in AAD */
|
||||
srtp_aes_gcm_test_case_1_aad, /* AAD */
|
||||
GCM_AUTH_TAG_LEN_8, /* */
|
||||
NULL /* pointer to next testcase */
|
||||
};
|
||||
|
||||
static const srtp_cipher_test_case_t srtp_aes_gcm_test_case_1 = {
|
||||
SRTP_AES_GCM_256_KEY_LEN_WSALT, /* octets in key */
|
||||
srtp_aes_gcm_test_case_1_key, /* key */
|
||||
srtp_aes_gcm_test_case_1_iv, /* packet index */
|
||||
60, /* octets in plaintext */
|
||||
srtp_aes_gcm_test_case_1_plaintext, /* plaintext */
|
||||
76, /* octets in ciphertext */
|
||||
srtp_aes_gcm_test_case_1_ciphertext, /* ciphertext + tag */
|
||||
20, /* octets in AAD */
|
||||
srtp_aes_gcm_test_case_1_aad, /* AAD */
|
||||
GCM_AUTH_TAG_LEN, /* */
|
||||
&srtp_aes_gcm_test_case_1a /* pointer to next testcase */
|
||||
};
|
||||
|
||||
/*
|
||||
* This is the vector function table for this crypto engine.
|
||||
*/
|
||||
/* clang-format off */
|
||||
const srtp_cipher_type_t srtp_aes_gcm_128 = {
|
||||
srtp_aes_gcm_nss_alloc,
|
||||
srtp_aes_gcm_nss_dealloc,
|
||||
srtp_aes_gcm_nss_context_init,
|
||||
srtp_aes_gcm_nss_set_aad,
|
||||
srtp_aes_gcm_nss_encrypt,
|
||||
srtp_aes_gcm_nss_decrypt,
|
||||
srtp_aes_gcm_nss_set_iv,
|
||||
srtp_aes_gcm_nss_get_tag,
|
||||
srtp_aes_gcm_128_nss_description,
|
||||
&srtp_aes_gcm_test_case_0,
|
||||
SRTP_AES_GCM_128
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/*
|
||||
* This is the vector function table for this crypto engine.
|
||||
*/
|
||||
/* clang-format off */
|
||||
const srtp_cipher_type_t srtp_aes_gcm_256 = {
|
||||
srtp_aes_gcm_nss_alloc,
|
||||
srtp_aes_gcm_nss_dealloc,
|
||||
srtp_aes_gcm_nss_context_init,
|
||||
srtp_aes_gcm_nss_set_aad,
|
||||
srtp_aes_gcm_nss_encrypt,
|
||||
srtp_aes_gcm_nss_decrypt,
|
||||
srtp_aes_gcm_nss_set_iv,
|
||||
srtp_aes_gcm_nss_get_tag,
|
||||
srtp_aes_gcm_256_nss_description,
|
||||
&srtp_aes_gcm_test_case_1,
|
||||
SRTP_AES_GCM_256
|
||||
};
|
||||
/* clang-format on */
|
||||
582
netwerk/srtp/src/crypto/cipher/aes_gcm_ossl.c
Normal file
582
netwerk/srtp/src/crypto/cipher/aes_gcm_ossl.c
Normal file
@ -0,0 +1,582 @@
|
||||
/*
|
||||
* aes_gcm_ossl.c
|
||||
*
|
||||
* AES Galois Counter Mode
|
||||
*
|
||||
* John A. Foley
|
||||
* Cisco Systems, Inc.
|
||||
*
|
||||
*/
|
||||
|
||||
/*
|
||||
*
|
||||
* Copyright (c) 2013-2017, Cisco Systems, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
*
|
||||
* Redistributions in binary form must reproduce the above
|
||||
* copyright notice, this list of conditions and the following
|
||||
* disclaimer in the documentation and/or other materials provided
|
||||
* with the distribution.
|
||||
*
|
||||
* Neither the name of the Cisco Systems, Inc. nor the names of its
|
||||
* contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
|
||||
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||||
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||||
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
||||
* OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
*/
|
||||
|
||||
#ifdef HAVE_CONFIG_H
|
||||
#include <config.h>
|
||||
#endif
|
||||
|
||||
#include <openssl/evp.h>
|
||||
#include "aes_gcm.h"
|
||||
#include "alloc.h"
|
||||
#include "err.h" /* for srtp_debug */
|
||||
#include "crypto_types.h"
|
||||
#include "cipher_types.h"
|
||||
|
||||
srtp_debug_module_t srtp_mod_aes_gcm = {
|
||||
0, /* debugging is off by default */
|
||||
"aes gcm" /* printable module name */
|
||||
};
|
||||
|
||||
/*
|
||||
* For now we only support 8 and 16 octet tags. The spec allows for
|
||||
* optional 12 byte tag, which may be supported in the future.
|
||||
*/
|
||||
#define GCM_AUTH_TAG_LEN 16
|
||||
#define GCM_AUTH_TAG_LEN_8 8
|
||||
|
||||
/*
|
||||
* This function allocates a new instance of this crypto engine.
|
||||
* The key_len parameter should be one of 28 or 44 for
|
||||
* AES-128-GCM or AES-256-GCM respectively. Note that the
|
||||
* key length includes the 14 byte salt value that is used when
|
||||
* initializing the KDF.
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_gcm_openssl_alloc(srtp_cipher_t **c,
|
||||
int key_len,
|
||||
int tlen)
|
||||
{
|
||||
srtp_aes_gcm_ctx_t *gcm;
|
||||
|
||||
debug_print(srtp_mod_aes_gcm, "allocating cipher with key length %d",
|
||||
key_len);
|
||||
debug_print(srtp_mod_aes_gcm, "allocating cipher with tag length %d", tlen);
|
||||
|
||||
/*
|
||||
* Verify the key_len is valid for one of: AES-128/256
|
||||
*/
|
||||
if (key_len != SRTP_AES_GCM_128_KEY_LEN_WSALT &&
|
||||
key_len != SRTP_AES_GCM_256_KEY_LEN_WSALT) {
|
||||
return (srtp_err_status_bad_param);
|
||||
}
|
||||
|
||||
if (tlen != GCM_AUTH_TAG_LEN && tlen != GCM_AUTH_TAG_LEN_8) {
|
||||
return (srtp_err_status_bad_param);
|
||||
}
|
||||
|
||||
/* allocate memory a cipher of type aes_gcm */
|
||||
*c = (srtp_cipher_t *)srtp_crypto_alloc(sizeof(srtp_cipher_t));
|
||||
if (*c == NULL) {
|
||||
return (srtp_err_status_alloc_fail);
|
||||
}
|
||||
|
||||
gcm = (srtp_aes_gcm_ctx_t *)srtp_crypto_alloc(sizeof(srtp_aes_gcm_ctx_t));
|
||||
if (gcm == NULL) {
|
||||
srtp_crypto_free(*c);
|
||||
*c = NULL;
|
||||
return (srtp_err_status_alloc_fail);
|
||||
}
|
||||
|
||||
gcm->ctx = EVP_CIPHER_CTX_new();
|
||||
if (gcm->ctx == NULL) {
|
||||
srtp_crypto_free(gcm);
|
||||
srtp_crypto_free(*c);
|
||||
*c = NULL;
|
||||
return srtp_err_status_alloc_fail;
|
||||
}
|
||||
|
||||
/* set pointers */
|
||||
(*c)->state = gcm;
|
||||
|
||||
/* setup cipher attributes */
|
||||
switch (key_len) {
|
||||
case SRTP_AES_GCM_128_KEY_LEN_WSALT:
|
||||
(*c)->type = &srtp_aes_gcm_128;
|
||||
(*c)->algorithm = SRTP_AES_GCM_128;
|
||||
gcm->key_size = SRTP_AES_128_KEY_LEN;
|
||||
gcm->tag_len = tlen;
|
||||
break;
|
||||
case SRTP_AES_GCM_256_KEY_LEN_WSALT:
|
||||
(*c)->type = &srtp_aes_gcm_256;
|
||||
(*c)->algorithm = SRTP_AES_GCM_256;
|
||||
gcm->key_size = SRTP_AES_256_KEY_LEN;
|
||||
gcm->tag_len = tlen;
|
||||
break;
|
||||
}
|
||||
|
||||
/* set key size */
|
||||
(*c)->key_len = key_len;
|
||||
|
||||
return (srtp_err_status_ok);
|
||||
}
|
||||
|
||||
/*
|
||||
* This function deallocates a GCM session
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_gcm_openssl_dealloc(srtp_cipher_t *c)
|
||||
{
|
||||
srtp_aes_gcm_ctx_t *ctx;
|
||||
|
||||
ctx = (srtp_aes_gcm_ctx_t *)c->state;
|
||||
if (ctx) {
|
||||
EVP_CIPHER_CTX_free(ctx->ctx);
|
||||
/* zeroize the key material */
|
||||
octet_string_set_to_zero(ctx, sizeof(srtp_aes_gcm_ctx_t));
|
||||
srtp_crypto_free(ctx);
|
||||
}
|
||||
|
||||
/* free memory */
|
||||
srtp_crypto_free(c);
|
||||
|
||||
return (srtp_err_status_ok);
|
||||
}
|
||||
|
||||
/*
|
||||
* aes_gcm_openssl_context_init(...) initializes the aes_gcm_context
|
||||
* using the value in key[].
|
||||
*
|
||||
* the key is the secret key
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_gcm_openssl_context_init(void *cv,
|
||||
const uint8_t *key)
|
||||
{
|
||||
srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv;
|
||||
const EVP_CIPHER *evp;
|
||||
|
||||
c->dir = srtp_direction_any;
|
||||
|
||||
debug_print(srtp_mod_aes_gcm, "key: %s",
|
||||
srtp_octet_string_hex_string(key, c->key_size));
|
||||
|
||||
switch (c->key_size) {
|
||||
case SRTP_AES_256_KEY_LEN:
|
||||
evp = EVP_aes_256_gcm();
|
||||
break;
|
||||
case SRTP_AES_128_KEY_LEN:
|
||||
evp = EVP_aes_128_gcm();
|
||||
break;
|
||||
default:
|
||||
return (srtp_err_status_bad_param);
|
||||
break;
|
||||
}
|
||||
|
||||
if (!EVP_CipherInit_ex(c->ctx, evp, NULL, key, NULL, 0)) {
|
||||
return (srtp_err_status_init_fail);
|
||||
}
|
||||
|
||||
return (srtp_err_status_ok);
|
||||
}
|
||||
|
||||
/*
|
||||
* aes_gcm_openssl_set_iv(c, iv) sets the counter value to the exor of iv with
|
||||
* the offset
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_gcm_openssl_set_iv(
|
||||
void *cv,
|
||||
uint8_t *iv,
|
||||
srtp_cipher_direction_t direction)
|
||||
{
|
||||
srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv;
|
||||
|
||||
if (direction != srtp_direction_encrypt &&
|
||||
direction != srtp_direction_decrypt) {
|
||||
return (srtp_err_status_bad_param);
|
||||
}
|
||||
c->dir = direction;
|
||||
|
||||
debug_print(srtp_mod_aes_gcm, "setting iv: %s",
|
||||
srtp_octet_string_hex_string(iv, 12));
|
||||
|
||||
if (!EVP_CIPHER_CTX_ctrl(c->ctx, EVP_CTRL_GCM_SET_IVLEN, 12, 0)) {
|
||||
return (srtp_err_status_init_fail);
|
||||
}
|
||||
|
||||
if (!EVP_CipherInit_ex(c->ctx, NULL, NULL, NULL, iv,
|
||||
(c->dir == srtp_direction_encrypt ? 1 : 0))) {
|
||||
return (srtp_err_status_init_fail);
|
||||
}
|
||||
|
||||
return (srtp_err_status_ok);
|
||||
}
|
||||
|
||||
/*
|
||||
* This function processes the AAD
|
||||
*
|
||||
* Parameters:
|
||||
* c Crypto context
|
||||
* aad Additional data to process for AEAD cipher suites
|
||||
* aad_len length of aad buffer
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_gcm_openssl_set_aad(void *cv,
|
||||
const uint8_t *aad,
|
||||
uint32_t aad_len)
|
||||
{
|
||||
srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv;
|
||||
int rv;
|
||||
|
||||
debug_print(srtp_mod_aes_gcm, "setting AAD: %s",
|
||||
srtp_octet_string_hex_string(aad, aad_len));
|
||||
|
||||
/*
|
||||
* Set dummy tag, OpenSSL requires the Tag to be set before
|
||||
* processing AAD
|
||||
*/
|
||||
|
||||
/*
|
||||
* OpenSSL never write to address pointed by the last parameter of
|
||||
* EVP_CIPHER_CTX_ctrl while EVP_CTRL_GCM_SET_TAG (in reality,
|
||||
* OpenSSL copy its content to the context), so we can make
|
||||
* aad read-only in this function and all its wrappers.
|
||||
*/
|
||||
unsigned char dummy_tag[GCM_AUTH_TAG_LEN];
|
||||
memset(dummy_tag, 0x0, GCM_AUTH_TAG_LEN);
|
||||
EVP_CIPHER_CTX_ctrl(c->ctx, EVP_CTRL_GCM_SET_TAG, c->tag_len, &dummy_tag);
|
||||
|
||||
rv = EVP_Cipher(c->ctx, NULL, aad, aad_len);
|
||||
if (rv != aad_len) {
|
||||
return (srtp_err_status_algo_fail);
|
||||
} else {
|
||||
return (srtp_err_status_ok);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* This function encrypts a buffer using AES GCM mode
|
||||
*
|
||||
* Parameters:
|
||||
* c Crypto context
|
||||
* buf data to encrypt
|
||||
* enc_len length of encrypt buffer
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_gcm_openssl_encrypt(void *cv,
|
||||
unsigned char *buf,
|
||||
unsigned int *enc_len)
|
||||
{
|
||||
srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv;
|
||||
if (c->dir != srtp_direction_encrypt && c->dir != srtp_direction_decrypt) {
|
||||
return (srtp_err_status_bad_param);
|
||||
}
|
||||
|
||||
/*
|
||||
* Encrypt the data
|
||||
*/
|
||||
EVP_Cipher(c->ctx, buf, buf, *enc_len);
|
||||
|
||||
return (srtp_err_status_ok);
|
||||
}
|
||||
|
||||
/*
|
||||
* This function calculates and returns the GCM tag for a given context.
|
||||
* This should be called after encrypting the data. The *len value
|
||||
* is increased by the tag size. The caller must ensure that *buf has
|
||||
* enough room to accept the appended tag.
|
||||
*
|
||||
* Parameters:
|
||||
* c Crypto context
|
||||
* buf data to encrypt
|
||||
* len length of encrypt buffer
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_gcm_openssl_get_tag(void *cv,
|
||||
uint8_t *buf,
|
||||
uint32_t *len)
|
||||
{
|
||||
srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv;
|
||||
/*
|
||||
* Calculate the tag
|
||||
*/
|
||||
EVP_Cipher(c->ctx, NULL, NULL, 0);
|
||||
|
||||
/*
|
||||
* Retreive the tag
|
||||
*/
|
||||
EVP_CIPHER_CTX_ctrl(c->ctx, EVP_CTRL_GCM_GET_TAG, c->tag_len, buf);
|
||||
|
||||
/*
|
||||
* Increase encryption length by desired tag size
|
||||
*/
|
||||
*len = c->tag_len;
|
||||
|
||||
return (srtp_err_status_ok);
|
||||
}
|
||||
|
||||
/*
|
||||
* This function decrypts a buffer using AES GCM mode
|
||||
*
|
||||
* Parameters:
|
||||
* c Crypto context
|
||||
* buf data to encrypt
|
||||
* enc_len length of encrypt buffer
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_gcm_openssl_decrypt(void *cv,
|
||||
unsigned char *buf,
|
||||
unsigned int *enc_len)
|
||||
{
|
||||
srtp_aes_gcm_ctx_t *c = (srtp_aes_gcm_ctx_t *)cv;
|
||||
if (c->dir != srtp_direction_encrypt && c->dir != srtp_direction_decrypt) {
|
||||
return (srtp_err_status_bad_param);
|
||||
}
|
||||
|
||||
/*
|
||||
* Set the tag before decrypting
|
||||
*/
|
||||
EVP_CIPHER_CTX_ctrl(c->ctx, EVP_CTRL_GCM_SET_TAG, c->tag_len,
|
||||
buf + (*enc_len - c->tag_len));
|
||||
EVP_Cipher(c->ctx, buf, buf, *enc_len - c->tag_len);
|
||||
|
||||
/*
|
||||
* Check the tag
|
||||
*/
|
||||
if (EVP_Cipher(c->ctx, NULL, NULL, 0)) {
|
||||
return (srtp_err_status_auth_fail);
|
||||
}
|
||||
|
||||
/*
|
||||
* Reduce the buffer size by the tag length since the tag
|
||||
* is not part of the original payload
|
||||
*/
|
||||
*enc_len -= c->tag_len;
|
||||
|
||||
return (srtp_err_status_ok);
|
||||
}
|
||||
|
||||
/*
|
||||
* Name of this crypto engine
|
||||
*/
|
||||
static const char srtp_aes_gcm_128_openssl_description[] =
|
||||
"AES-128 GCM using openssl";
|
||||
static const char srtp_aes_gcm_256_openssl_description[] =
|
||||
"AES-256 GCM using openssl";
|
||||
|
||||
/*
|
||||
* KAT values for AES self-test. These
|
||||
* values we're derived from independent test code
|
||||
* using OpenSSL.
|
||||
*/
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_test_case_0_key[SRTP_AES_GCM_128_KEY_LEN_WSALT] = {
|
||||
0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
|
||||
0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08,
|
||||
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
|
||||
0x09, 0x0a, 0x0b, 0x0c,
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static uint8_t srtp_aes_gcm_test_case_0_iv[12] = {
|
||||
0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad,
|
||||
0xde, 0xca, 0xf8, 0x88
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_test_case_0_plaintext[60] = {
|
||||
0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5,
|
||||
0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a,
|
||||
0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda,
|
||||
0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72,
|
||||
0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53,
|
||||
0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25,
|
||||
0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57,
|
||||
0xba, 0x63, 0x7b, 0x39
|
||||
};
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_test_case_0_aad[20] = {
|
||||
0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
|
||||
0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
|
||||
0xab, 0xad, 0xda, 0xd2
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_test_case_0_ciphertext[76] = {
|
||||
0x42, 0x83, 0x1e, 0xc2, 0x21, 0x77, 0x74, 0x24,
|
||||
0x4b, 0x72, 0x21, 0xb7, 0x84, 0xd0, 0xd4, 0x9c,
|
||||
0xe3, 0xaa, 0x21, 0x2f, 0x2c, 0x02, 0xa4, 0xe0,
|
||||
0x35, 0xc1, 0x7e, 0x23, 0x29, 0xac, 0xa1, 0x2e,
|
||||
0x21, 0xd5, 0x14, 0xb2, 0x54, 0x66, 0x93, 0x1c,
|
||||
0x7d, 0x8f, 0x6a, 0x5a, 0xac, 0x84, 0xaa, 0x05,
|
||||
0x1b, 0xa3, 0x0b, 0x39, 0x6a, 0x0a, 0xac, 0x97,
|
||||
0x3d, 0x58, 0xe0, 0x91,
|
||||
/* the last 16 bytes are the tag */
|
||||
0x5b, 0xc9, 0x4f, 0xbc, 0x32, 0x21, 0xa5, 0xdb,
|
||||
0x94, 0xfa, 0xe9, 0x5a, 0xe7, 0x12, 0x1a, 0x47,
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
static const srtp_cipher_test_case_t srtp_aes_gcm_test_case_0a = {
|
||||
SRTP_AES_GCM_128_KEY_LEN_WSALT, /* octets in key */
|
||||
srtp_aes_gcm_test_case_0_key, /* key */
|
||||
srtp_aes_gcm_test_case_0_iv, /* packet index */
|
||||
60, /* octets in plaintext */
|
||||
srtp_aes_gcm_test_case_0_plaintext, /* plaintext */
|
||||
68, /* octets in ciphertext */
|
||||
srtp_aes_gcm_test_case_0_ciphertext, /* ciphertext + tag */
|
||||
20, /* octets in AAD */
|
||||
srtp_aes_gcm_test_case_0_aad, /* AAD */
|
||||
GCM_AUTH_TAG_LEN_8, /* */
|
||||
NULL /* pointer to next testcase */
|
||||
};
|
||||
|
||||
static const srtp_cipher_test_case_t srtp_aes_gcm_test_case_0 = {
|
||||
SRTP_AES_GCM_128_KEY_LEN_WSALT, /* octets in key */
|
||||
srtp_aes_gcm_test_case_0_key, /* key */
|
||||
srtp_aes_gcm_test_case_0_iv, /* packet index */
|
||||
60, /* octets in plaintext */
|
||||
srtp_aes_gcm_test_case_0_plaintext, /* plaintext */
|
||||
76, /* octets in ciphertext */
|
||||
srtp_aes_gcm_test_case_0_ciphertext, /* ciphertext + tag */
|
||||
20, /* octets in AAD */
|
||||
srtp_aes_gcm_test_case_0_aad, /* AAD */
|
||||
GCM_AUTH_TAG_LEN, /* */
|
||||
&srtp_aes_gcm_test_case_0a /* pointer to next testcase */
|
||||
};
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_test_case_1_key[SRTP_AES_GCM_256_KEY_LEN_WSALT] = {
|
||||
0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
|
||||
0xa5, 0x59, 0x09, 0xc5, 0x54, 0x66, 0x93, 0x1c,
|
||||
0xaf, 0xf5, 0x26, 0x9a, 0x21, 0xd5, 0x14, 0xb2,
|
||||
0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08,
|
||||
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
|
||||
0x09, 0x0a, 0x0b, 0x0c,
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static uint8_t srtp_aes_gcm_test_case_1_iv[12] = {
|
||||
0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad,
|
||||
0xde, 0xca, 0xf8, 0x88
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_test_case_1_plaintext[60] = {
|
||||
0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5,
|
||||
0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a,
|
||||
0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda,
|
||||
0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72,
|
||||
0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53,
|
||||
0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25,
|
||||
0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57,
|
||||
0xba, 0x63, 0x7b, 0x39
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_test_case_1_aad[20] = {
|
||||
0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
|
||||
0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
|
||||
0xab, 0xad, 0xda, 0xd2
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_gcm_test_case_1_ciphertext[76] = {
|
||||
0x0b, 0x11, 0xcf, 0xaf, 0x68, 0x4d, 0xae, 0x46,
|
||||
0xc7, 0x90, 0xb8, 0x8e, 0xb7, 0x6a, 0x76, 0x2a,
|
||||
0x94, 0x82, 0xca, 0xab, 0x3e, 0x39, 0xd7, 0x86,
|
||||
0x1b, 0xc7, 0x93, 0xed, 0x75, 0x7f, 0x23, 0x5a,
|
||||
0xda, 0xfd, 0xd3, 0xe2, 0x0e, 0x80, 0x87, 0xa9,
|
||||
0x6d, 0xd7, 0xe2, 0x6a, 0x7d, 0x5f, 0xb4, 0x80,
|
||||
0xef, 0xef, 0xc5, 0x29, 0x12, 0xd1, 0xaa, 0x10,
|
||||
0x09, 0xc9, 0x86, 0xc1,
|
||||
/* the last 16 bytes are the tag */
|
||||
0x45, 0xbc, 0x03, 0xe6, 0xe1, 0xac, 0x0a, 0x9f,
|
||||
0x81, 0xcb, 0x8e, 0x5b, 0x46, 0x65, 0x63, 0x1d,
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
static const srtp_cipher_test_case_t srtp_aes_gcm_test_case_1a = {
|
||||
SRTP_AES_GCM_256_KEY_LEN_WSALT, /* octets in key */
|
||||
srtp_aes_gcm_test_case_1_key, /* key */
|
||||
srtp_aes_gcm_test_case_1_iv, /* packet index */
|
||||
60, /* octets in plaintext */
|
||||
srtp_aes_gcm_test_case_1_plaintext, /* plaintext */
|
||||
68, /* octets in ciphertext */
|
||||
srtp_aes_gcm_test_case_1_ciphertext, /* ciphertext + tag */
|
||||
20, /* octets in AAD */
|
||||
srtp_aes_gcm_test_case_1_aad, /* AAD */
|
||||
GCM_AUTH_TAG_LEN_8, /* */
|
||||
NULL /* pointer to next testcase */
|
||||
};
|
||||
|
||||
static const srtp_cipher_test_case_t srtp_aes_gcm_test_case_1 = {
|
||||
SRTP_AES_GCM_256_KEY_LEN_WSALT, /* octets in key */
|
||||
srtp_aes_gcm_test_case_1_key, /* key */
|
||||
srtp_aes_gcm_test_case_1_iv, /* packet index */
|
||||
60, /* octets in plaintext */
|
||||
srtp_aes_gcm_test_case_1_plaintext, /* plaintext */
|
||||
76, /* octets in ciphertext */
|
||||
srtp_aes_gcm_test_case_1_ciphertext, /* ciphertext + tag */
|
||||
20, /* octets in AAD */
|
||||
srtp_aes_gcm_test_case_1_aad, /* AAD */
|
||||
GCM_AUTH_TAG_LEN, /* */
|
||||
&srtp_aes_gcm_test_case_1a /* pointer to next testcase */
|
||||
};
|
||||
|
||||
/*
|
||||
* This is the vector function table for this crypto engine.
|
||||
*/
|
||||
const srtp_cipher_type_t srtp_aes_gcm_128 = {
|
||||
srtp_aes_gcm_openssl_alloc,
|
||||
srtp_aes_gcm_openssl_dealloc,
|
||||
srtp_aes_gcm_openssl_context_init,
|
||||
srtp_aes_gcm_openssl_set_aad,
|
||||
srtp_aes_gcm_openssl_encrypt,
|
||||
srtp_aes_gcm_openssl_decrypt,
|
||||
srtp_aes_gcm_openssl_set_iv,
|
||||
srtp_aes_gcm_openssl_get_tag,
|
||||
srtp_aes_gcm_128_openssl_description,
|
||||
&srtp_aes_gcm_test_case_0,
|
||||
SRTP_AES_GCM_128
|
||||
};
|
||||
|
||||
/*
|
||||
* This is the vector function table for this crypto engine.
|
||||
*/
|
||||
const srtp_cipher_type_t srtp_aes_gcm_256 = {
|
||||
srtp_aes_gcm_openssl_alloc,
|
||||
srtp_aes_gcm_openssl_dealloc,
|
||||
srtp_aes_gcm_openssl_context_init,
|
||||
srtp_aes_gcm_openssl_set_aad,
|
||||
srtp_aes_gcm_openssl_encrypt,
|
||||
srtp_aes_gcm_openssl_decrypt,
|
||||
srtp_aes_gcm_openssl_set_iv,
|
||||
srtp_aes_gcm_openssl_get_tag,
|
||||
srtp_aes_gcm_256_openssl_description,
|
||||
&srtp_aes_gcm_test_case_1,
|
||||
SRTP_AES_GCM_256
|
||||
};
|
||||
@ -121,6 +121,7 @@ static srtp_err_status_t srtp_aes_icm_alloc(srtp_cipher_t **c,
|
||||
icm = (srtp_aes_icm_ctx_t *)srtp_crypto_alloc(sizeof(srtp_aes_icm_ctx_t));
|
||||
if (icm == NULL) {
|
||||
srtp_crypto_free(*c);
|
||||
*c = NULL;
|
||||
return srtp_err_status_alloc_fail;
|
||||
}
|
||||
|
||||
|
||||
550
netwerk/srtp/src/crypto/cipher/aes_icm_nss.c
Normal file
550
netwerk/srtp/src/crypto/cipher/aes_icm_nss.c
Normal file
@ -0,0 +1,550 @@
|
||||
/*
|
||||
* aes_icm_nss.c
|
||||
*
|
||||
* AES Integer Counter Mode
|
||||
*
|
||||
* Richard L. Barnes
|
||||
* Cisco Systems, Inc.
|
||||
*/
|
||||
|
||||
/*
|
||||
*
|
||||
* Copyright (c) 2013-2017, Cisco Systems, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
*
|
||||
* Redistributions in binary form must reproduce the above
|
||||
* copyright notice, this list of conditions and the following
|
||||
* disclaimer in the documentation and/or other materials provided
|
||||
* with the distribution.
|
||||
*
|
||||
* Neither the name of the Cisco Systems, Inc. nor the names of its
|
||||
* contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
|
||||
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||||
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||||
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
||||
* OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
*/
|
||||
|
||||
#ifdef HAVE_CONFIG_H
|
||||
#include <config.h>
|
||||
#endif
|
||||
|
||||
#include "aes_icm_ext.h"
|
||||
#include "crypto_types.h"
|
||||
#include "err.h" /* for srtp_debug */
|
||||
#include "alloc.h"
|
||||
#include "cipher_types.h"
|
||||
#include <nss.h>
|
||||
|
||||
srtp_debug_module_t srtp_mod_aes_icm = {
|
||||
0, /* debugging is off by default */
|
||||
"aes icm nss" /* printable module name */
|
||||
};
|
||||
|
||||
/*
|
||||
* integer counter mode works as follows:
|
||||
*
|
||||
* 16 bits
|
||||
* <----->
|
||||
* +------+------+------+------+------+------+------+------+
|
||||
* | nonce | packet index | ctr |---+
|
||||
* +------+------+------+------+------+------+------+------+ |
|
||||
* |
|
||||
* +------+------+------+------+------+------+------+------+ v
|
||||
* | salt |000000|->(+)
|
||||
* +------+------+------+------+------+------+------+------+ |
|
||||
* |
|
||||
* +---------+
|
||||
* | encrypt |
|
||||
* +---------+
|
||||
* |
|
||||
* +------+------+------+------+------+------+------+------+ |
|
||||
* | keystream block |<--+
|
||||
* +------+------+------+------+------+------+------+------+
|
||||
*
|
||||
* All fields are big-endian
|
||||
*
|
||||
* ctr is the block counter, which increments from zero for
|
||||
* each packet (16 bits wide)
|
||||
*
|
||||
* packet index is distinct for each packet (48 bits wide)
|
||||
*
|
||||
* nonce can be distinct across many uses of the same key, or
|
||||
* can be a fixed value per key, or can be per-packet randomness
|
||||
* (64 bits)
|
||||
*
|
||||
*/
|
||||
|
||||
/*
|
||||
* This function allocates a new instance of this crypto engine.
|
||||
* The key_len parameter should be one of 30, 38, or 46 for
|
||||
* AES-128, AES-192, and AES-256 respectively. Note, this key_len
|
||||
* value is inflated, as it also accounts for the 112 bit salt
|
||||
* value. The tlen argument is for the AEAD tag length, which
|
||||
* isn't used in counter mode.
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_icm_nss_alloc(srtp_cipher_t **c,
|
||||
int key_len,
|
||||
int tlen)
|
||||
{
|
||||
srtp_aes_icm_ctx_t *icm;
|
||||
|
||||
debug_print(srtp_mod_aes_icm, "allocating cipher with key length %d",
|
||||
key_len);
|
||||
|
||||
/*
|
||||
* Verify the key_len is valid for one of: AES-128/192/256
|
||||
*/
|
||||
if (key_len != SRTP_AES_ICM_128_KEY_LEN_WSALT &&
|
||||
key_len != SRTP_AES_ICM_192_KEY_LEN_WSALT &&
|
||||
key_len != SRTP_AES_ICM_256_KEY_LEN_WSALT) {
|
||||
return srtp_err_status_bad_param;
|
||||
}
|
||||
|
||||
/* Initialize NSS */
|
||||
if (!NSS_IsInitialized() && NSS_NoDB_Init(NULL) != SECSuccess) {
|
||||
return (srtp_err_status_cipher_fail);
|
||||
}
|
||||
|
||||
/* allocate memory a cipher of type aes_icm */
|
||||
*c = (srtp_cipher_t *)srtp_crypto_alloc(sizeof(srtp_cipher_t));
|
||||
if (*c == NULL) {
|
||||
return srtp_err_status_alloc_fail;
|
||||
}
|
||||
|
||||
icm = (srtp_aes_icm_ctx_t *)srtp_crypto_alloc(sizeof(srtp_aes_icm_ctx_t));
|
||||
if (icm == NULL) {
|
||||
srtp_crypto_free(*c);
|
||||
*c = NULL;
|
||||
return srtp_err_status_alloc_fail;
|
||||
}
|
||||
|
||||
icm->key = NULL;
|
||||
icm->ctx = NULL;
|
||||
|
||||
/* set pointers */
|
||||
(*c)->state = icm;
|
||||
|
||||
/* setup cipher parameters */
|
||||
switch (key_len) {
|
||||
case SRTP_AES_ICM_128_KEY_LEN_WSALT:
|
||||
(*c)->algorithm = SRTP_AES_ICM_128;
|
||||
(*c)->type = &srtp_aes_icm_128;
|
||||
icm->key_size = SRTP_AES_128_KEY_LEN;
|
||||
break;
|
||||
case SRTP_AES_ICM_192_KEY_LEN_WSALT:
|
||||
(*c)->algorithm = SRTP_AES_ICM_192;
|
||||
(*c)->type = &srtp_aes_icm_192;
|
||||
icm->key_size = SRTP_AES_192_KEY_LEN;
|
||||
break;
|
||||
case SRTP_AES_ICM_256_KEY_LEN_WSALT:
|
||||
(*c)->algorithm = SRTP_AES_ICM_256;
|
||||
(*c)->type = &srtp_aes_icm_256;
|
||||
icm->key_size = SRTP_AES_256_KEY_LEN;
|
||||
break;
|
||||
}
|
||||
|
||||
/* set key size */
|
||||
(*c)->key_len = key_len;
|
||||
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
/*
|
||||
* This function deallocates an instance of this engine
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_icm_nss_dealloc(srtp_cipher_t *c)
|
||||
{
|
||||
srtp_aes_icm_ctx_t *ctx;
|
||||
|
||||
ctx = (srtp_aes_icm_ctx_t *)c->state;
|
||||
if (ctx) {
|
||||
/* free any PK11 values that have been created */
|
||||
if (ctx->key) {
|
||||
PK11_FreeSymKey(ctx->key);
|
||||
ctx->key = NULL;
|
||||
}
|
||||
|
||||
if (ctx->ctx) {
|
||||
PK11_DestroyContext(ctx->ctx, PR_TRUE);
|
||||
ctx->ctx = NULL;
|
||||
}
|
||||
|
||||
/* zeroize everything */
|
||||
octet_string_set_to_zero(ctx, sizeof(srtp_aes_icm_ctx_t));
|
||||
srtp_crypto_free(ctx);
|
||||
}
|
||||
|
||||
/* free memory */
|
||||
srtp_crypto_free(c);
|
||||
|
||||
return (srtp_err_status_ok);
|
||||
}
|
||||
|
||||
/*
|
||||
* aes_icm_nss_context_init(...) initializes the aes_icm_context
|
||||
* using the value in key[].
|
||||
*
|
||||
* the key is the secret key
|
||||
*
|
||||
* the salt is unpredictable (but not necessarily secret) data which
|
||||
* randomizes the starting point in the keystream
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_icm_nss_context_init(void *cv,
|
||||
const uint8_t *key)
|
||||
{
|
||||
srtp_aes_icm_ctx_t *c = (srtp_aes_icm_ctx_t *)cv;
|
||||
|
||||
/*
|
||||
* set counter and initial values to 'offset' value, being careful not to
|
||||
* go past the end of the key buffer
|
||||
*/
|
||||
v128_set_to_zero(&c->counter);
|
||||
v128_set_to_zero(&c->offset);
|
||||
memcpy(&c->counter, key + c->key_size, SRTP_SALT_LEN);
|
||||
memcpy(&c->offset, key + c->key_size, SRTP_SALT_LEN);
|
||||
|
||||
/* force last two octets of the offset to zero (for srtp compatibility) */
|
||||
c->offset.v8[SRTP_SALT_LEN] = c->offset.v8[SRTP_SALT_LEN + 1] = 0;
|
||||
c->counter.v8[SRTP_SALT_LEN] = c->counter.v8[SRTP_SALT_LEN + 1] = 0;
|
||||
|
||||
debug_print(srtp_mod_aes_icm, "key: %s",
|
||||
srtp_octet_string_hex_string(key, c->key_size));
|
||||
debug_print(srtp_mod_aes_icm, "offset: %s", v128_hex_string(&c->offset));
|
||||
|
||||
if (c->key) {
|
||||
PK11_FreeSymKey(c->key);
|
||||
c->key = NULL;
|
||||
}
|
||||
|
||||
PK11SlotInfo *slot = PK11_GetBestSlot(CKM_AES_CTR, NULL);
|
||||
if (!slot) {
|
||||
return srtp_err_status_bad_param;
|
||||
}
|
||||
|
||||
SECItem keyItem = { siBuffer, (unsigned char *)key, c->key_size };
|
||||
c->key = PK11_ImportSymKey(slot, CKM_AES_CTR, PK11_OriginUnwrap,
|
||||
CKA_ENCRYPT, &keyItem, NULL);
|
||||
PK11_FreeSlot(slot);
|
||||
|
||||
if (!c->key) {
|
||||
return srtp_err_status_cipher_fail;
|
||||
}
|
||||
|
||||
return (srtp_err_status_ok);
|
||||
}
|
||||
|
||||
/*
|
||||
* aes_icm_set_iv(c, iv) sets the counter value to the exor of iv with
|
||||
* the offset
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_icm_nss_set_iv(void *cv,
|
||||
uint8_t *iv,
|
||||
srtp_cipher_direction_t dir)
|
||||
{
|
||||
srtp_aes_icm_ctx_t *c = (srtp_aes_icm_ctx_t *)cv;
|
||||
v128_t nonce;
|
||||
|
||||
/* set nonce (for alignment) */
|
||||
v128_copy_octet_string(&nonce, iv);
|
||||
|
||||
debug_print(srtp_mod_aes_icm, "setting iv: %s", v128_hex_string(&nonce));
|
||||
|
||||
v128_xor(&c->counter, &c->offset, &nonce);
|
||||
|
||||
debug_print(srtp_mod_aes_icm, "set_counter: %s",
|
||||
v128_hex_string(&c->counter));
|
||||
|
||||
/* set up the PK11 context now that we have all the info */
|
||||
CK_AES_CTR_PARAMS param;
|
||||
param.ulCounterBits = 16;
|
||||
memcpy(param.cb, &c->counter, 16);
|
||||
|
||||
if (!c->key) {
|
||||
return srtp_err_status_bad_param;
|
||||
}
|
||||
|
||||
if (c->ctx) {
|
||||
PK11_DestroyContext(c->ctx, PR_TRUE);
|
||||
}
|
||||
|
||||
SECItem paramItem = { siBuffer, (unsigned char *)¶m,
|
||||
sizeof(CK_AES_CTR_PARAMS) };
|
||||
c->ctx = PK11_CreateContextBySymKey(CKM_AES_CTR, CKA_ENCRYPT, c->key,
|
||||
¶mItem);
|
||||
if (!c->ctx) {
|
||||
return srtp_err_status_cipher_fail;
|
||||
}
|
||||
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
/*
|
||||
* This function encrypts a buffer using AES CTR mode
|
||||
*
|
||||
* Parameters:
|
||||
* c Crypto context
|
||||
* buf data to encrypt
|
||||
* enc_len length of encrypt buffer
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_icm_nss_encrypt(void *cv,
|
||||
unsigned char *buf,
|
||||
unsigned int *enc_len)
|
||||
{
|
||||
srtp_aes_icm_ctx_t *c = (srtp_aes_icm_ctx_t *)cv;
|
||||
|
||||
if (!c->ctx) {
|
||||
return srtp_err_status_bad_param;
|
||||
}
|
||||
|
||||
int rv =
|
||||
PK11_CipherOp(c->ctx, buf, (int *)enc_len, *enc_len, buf, *enc_len);
|
||||
|
||||
srtp_err_status_t status = (srtp_err_status_ok);
|
||||
if (rv != SECSuccess) {
|
||||
status = (srtp_err_status_cipher_fail);
|
||||
}
|
||||
|
||||
return status;
|
||||
}
|
||||
|
||||
/*
|
||||
* Name of this crypto engine
|
||||
*/
|
||||
static const char srtp_aes_icm_128_nss_description[] =
|
||||
"AES-128 counter mode using NSS";
|
||||
static const char srtp_aes_icm_192_nss_description[] =
|
||||
"AES-192 counter mode using NSS";
|
||||
static const char srtp_aes_icm_256_nss_description[] =
|
||||
"AES-256 counter mode using NSS";
|
||||
|
||||
/*
|
||||
* KAT values for AES self-test. These
|
||||
* values came from the legacy libsrtp code.
|
||||
*/
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_128_test_case_0_key[SRTP_AES_ICM_128_KEY_LEN_WSALT] = {
|
||||
0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6,
|
||||
0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c,
|
||||
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
|
||||
0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static uint8_t srtp_aes_icm_128_test_case_0_nonce[16] = {
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_128_test_case_0_plaintext[32] = {
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_128_test_case_0_ciphertext[32] = {
|
||||
0xe0, 0x3e, 0xad, 0x09, 0x35, 0xc9, 0x5e, 0x80,
|
||||
0xe1, 0x66, 0xb1, 0x6d, 0xd9, 0x2b, 0x4e, 0xb4,
|
||||
0xd2, 0x35, 0x13, 0x16, 0x2b, 0x02, 0xd0, 0xf7,
|
||||
0x2a, 0x43, 0xa2, 0xfe, 0x4a, 0x5f, 0x97, 0xab
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
static const srtp_cipher_test_case_t srtp_aes_icm_128_test_case_0 = {
|
||||
SRTP_AES_ICM_128_KEY_LEN_WSALT, /* octets in key */
|
||||
srtp_aes_icm_128_test_case_0_key, /* key */
|
||||
srtp_aes_icm_128_test_case_0_nonce, /* packet index */
|
||||
32, /* octets in plaintext */
|
||||
srtp_aes_icm_128_test_case_0_plaintext, /* plaintext */
|
||||
32, /* octets in ciphertext */
|
||||
srtp_aes_icm_128_test_case_0_ciphertext, /* ciphertext */
|
||||
0, /* */
|
||||
NULL, /* */
|
||||
0, /* */
|
||||
NULL /* pointer to next testcase */
|
||||
};
|
||||
|
||||
/*
|
||||
* KAT values for AES-192-CTR self-test. These
|
||||
* values came from section 7 of RFC 6188.
|
||||
*/
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_192_test_case_0_key[SRTP_AES_ICM_192_KEY_LEN_WSALT] = {
|
||||
0xea, 0xb2, 0x34, 0x76, 0x4e, 0x51, 0x7b, 0x2d,
|
||||
0x3d, 0x16, 0x0d, 0x58, 0x7d, 0x8c, 0x86, 0x21,
|
||||
0x97, 0x40, 0xf6, 0x5f, 0x99, 0xb6, 0xbc, 0xf7,
|
||||
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
|
||||
0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static uint8_t srtp_aes_icm_192_test_case_0_nonce[16] = {
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_192_test_case_0_plaintext[32] = {
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_192_test_case_0_ciphertext[32] = {
|
||||
0x35, 0x09, 0x6c, 0xba, 0x46, 0x10, 0x02, 0x8d,
|
||||
0xc1, 0xb5, 0x75, 0x03, 0x80, 0x4c, 0xe3, 0x7c,
|
||||
0x5d, 0xe9, 0x86, 0x29, 0x1d, 0xcc, 0xe1, 0x61,
|
||||
0xd5, 0x16, 0x5e, 0xc4, 0x56, 0x8f, 0x5c, 0x9a
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
static const srtp_cipher_test_case_t srtp_aes_icm_192_test_case_0 = {
|
||||
SRTP_AES_ICM_192_KEY_LEN_WSALT, /* octets in key */
|
||||
srtp_aes_icm_192_test_case_0_key, /* key */
|
||||
srtp_aes_icm_192_test_case_0_nonce, /* packet index */
|
||||
32, /* octets in plaintext */
|
||||
srtp_aes_icm_192_test_case_0_plaintext, /* plaintext */
|
||||
32, /* octets in ciphertext */
|
||||
srtp_aes_icm_192_test_case_0_ciphertext, /* ciphertext */
|
||||
0, /* */
|
||||
NULL, /* */
|
||||
0, /* */
|
||||
NULL /* pointer to next testcase */
|
||||
};
|
||||
|
||||
/*
|
||||
* KAT values for AES-256-CTR self-test. These
|
||||
* values came from section 7 of RFC 6188.
|
||||
*/
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_256_test_case_0_key[SRTP_AES_ICM_256_KEY_LEN_WSALT] = {
|
||||
0x57, 0xf8, 0x2f, 0xe3, 0x61, 0x3f, 0xd1, 0x70,
|
||||
0xa8, 0x5e, 0xc9, 0x3c, 0x40, 0xb1, 0xf0, 0x92,
|
||||
0x2e, 0xc4, 0xcb, 0x0d, 0xc0, 0x25, 0xb5, 0x82,
|
||||
0x72, 0x14, 0x7c, 0xc4, 0x38, 0x94, 0x4a, 0x98,
|
||||
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
|
||||
0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static uint8_t srtp_aes_icm_256_test_case_0_nonce[16] = {
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_256_test_case_0_plaintext[32] = {
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_256_test_case_0_ciphertext[32] = {
|
||||
0x92, 0xbd, 0xd2, 0x8a, 0x93, 0xc3, 0xf5, 0x25,
|
||||
0x11, 0xc6, 0x77, 0xd0, 0x8b, 0x55, 0x15, 0xa4,
|
||||
0x9d, 0xa7, 0x1b, 0x23, 0x78, 0xa8, 0x54, 0xf6,
|
||||
0x70, 0x50, 0x75, 0x6d, 0xed, 0x16, 0x5b, 0xac
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
static const srtp_cipher_test_case_t srtp_aes_icm_256_test_case_0 = {
|
||||
SRTP_AES_ICM_256_KEY_LEN_WSALT, /* octets in key */
|
||||
srtp_aes_icm_256_test_case_0_key, /* key */
|
||||
srtp_aes_icm_256_test_case_0_nonce, /* packet index */
|
||||
32, /* octets in plaintext */
|
||||
srtp_aes_icm_256_test_case_0_plaintext, /* plaintext */
|
||||
32, /* octets in ciphertext */
|
||||
srtp_aes_icm_256_test_case_0_ciphertext, /* ciphertext */
|
||||
0, /* */
|
||||
NULL, /* */
|
||||
0, /* */
|
||||
NULL /* pointer to next testcase */
|
||||
};
|
||||
|
||||
/*
|
||||
* This is the function table for this crypto engine.
|
||||
* note: the encrypt function is identical to the decrypt function
|
||||
*/
|
||||
const srtp_cipher_type_t srtp_aes_icm_128 = {
|
||||
srtp_aes_icm_nss_alloc, /* */
|
||||
srtp_aes_icm_nss_dealloc, /* */
|
||||
srtp_aes_icm_nss_context_init, /* */
|
||||
0, /* set_aad */
|
||||
srtp_aes_icm_nss_encrypt, /* */
|
||||
srtp_aes_icm_nss_encrypt, /* */
|
||||
srtp_aes_icm_nss_set_iv, /* */
|
||||
0, /* get_tag */
|
||||
srtp_aes_icm_128_nss_description, /* */
|
||||
&srtp_aes_icm_128_test_case_0, /* */
|
||||
SRTP_AES_ICM_128 /* */
|
||||
};
|
||||
|
||||
/*
|
||||
* This is the function table for this crypto engine.
|
||||
* note: the encrypt function is identical to the decrypt function
|
||||
*/
|
||||
const srtp_cipher_type_t srtp_aes_icm_192 = {
|
||||
srtp_aes_icm_nss_alloc, /* */
|
||||
srtp_aes_icm_nss_dealloc, /* */
|
||||
srtp_aes_icm_nss_context_init, /* */
|
||||
0, /* set_aad */
|
||||
srtp_aes_icm_nss_encrypt, /* */
|
||||
srtp_aes_icm_nss_encrypt, /* */
|
||||
srtp_aes_icm_nss_set_iv, /* */
|
||||
0, /* get_tag */
|
||||
srtp_aes_icm_192_nss_description, /* */
|
||||
&srtp_aes_icm_192_test_case_0, /* */
|
||||
SRTP_AES_ICM_192 /* */
|
||||
};
|
||||
|
||||
/*
|
||||
* This is the function table for this crypto engine.
|
||||
* note: the encrypt function is identical to the decrypt function
|
||||
*/
|
||||
const srtp_cipher_type_t srtp_aes_icm_256 = {
|
||||
srtp_aes_icm_nss_alloc, /* */
|
||||
srtp_aes_icm_nss_dealloc, /* */
|
||||
srtp_aes_icm_nss_context_init, /* */
|
||||
0, /* set_aad */
|
||||
srtp_aes_icm_nss_encrypt, /* */
|
||||
srtp_aes_icm_nss_encrypt, /* */
|
||||
srtp_aes_icm_nss_set_iv, /* */
|
||||
0, /* get_tag */
|
||||
srtp_aes_icm_256_nss_description, /* */
|
||||
&srtp_aes_icm_256_test_case_0, /* */
|
||||
SRTP_AES_ICM_256 /* */
|
||||
};
|
||||
540
netwerk/srtp/src/crypto/cipher/aes_icm_ossl.c
Normal file
540
netwerk/srtp/src/crypto/cipher/aes_icm_ossl.c
Normal file
@ -0,0 +1,540 @@
|
||||
/*
|
||||
* aes_icm_ossl.c
|
||||
*
|
||||
* AES Integer Counter Mode
|
||||
*
|
||||
* John A. Foley
|
||||
* Cisco Systems, Inc.
|
||||
*
|
||||
* 2/24/2012: This module was modified to use CiscoSSL for AES counter
|
||||
* mode. Eddy Lem contributed the code to allow this.
|
||||
*
|
||||
* 12/20/2012: Added support for AES-192 and AES-256.
|
||||
*/
|
||||
|
||||
/*
|
||||
*
|
||||
* Copyright (c) 2013-2017, Cisco Systems, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
*
|
||||
* Redistributions in binary form must reproduce the above
|
||||
* copyright notice, this list of conditions and the following
|
||||
* disclaimer in the documentation and/or other materials provided
|
||||
* with the distribution.
|
||||
*
|
||||
* Neither the name of the Cisco Systems, Inc. nor the names of its
|
||||
* contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
|
||||
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||||
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||||
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
||||
* OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
*/
|
||||
|
||||
#ifdef HAVE_CONFIG_H
|
||||
#include <config.h>
|
||||
#endif
|
||||
|
||||
#include <openssl/evp.h>
|
||||
#include "aes_icm_ext.h"
|
||||
#include "crypto_types.h"
|
||||
#include "err.h" /* for srtp_debug */
|
||||
#include "alloc.h"
|
||||
#include "cipher_types.h"
|
||||
|
||||
srtp_debug_module_t srtp_mod_aes_icm = {
|
||||
0, /* debugging is off by default */
|
||||
"aes icm ossl" /* printable module name */
|
||||
};
|
||||
|
||||
/*
|
||||
* integer counter mode works as follows:
|
||||
*
|
||||
* 16 bits
|
||||
* <----->
|
||||
* +------+------+------+------+------+------+------+------+
|
||||
* | nonce | packet index | ctr |---+
|
||||
* +------+------+------+------+------+------+------+------+ |
|
||||
* |
|
||||
* +------+------+------+------+------+------+------+------+ v
|
||||
* | salt |000000|->(+)
|
||||
* +------+------+------+------+------+------+------+------+ |
|
||||
* |
|
||||
* +---------+
|
||||
* | encrypt |
|
||||
* +---------+
|
||||
* |
|
||||
* +------+------+------+------+------+------+------+------+ |
|
||||
* | keystream block |<--+
|
||||
* +------+------+------+------+------+------+------+------+
|
||||
*
|
||||
* All fields are big-endian
|
||||
*
|
||||
* ctr is the block counter, which increments from zero for
|
||||
* each packet (16 bits wide)
|
||||
*
|
||||
* packet index is distinct for each packet (48 bits wide)
|
||||
*
|
||||
* nonce can be distinct across many uses of the same key, or
|
||||
* can be a fixed value per key, or can be per-packet randomness
|
||||
* (64 bits)
|
||||
*
|
||||
*/
|
||||
|
||||
/*
|
||||
* This function allocates a new instance of this crypto engine.
|
||||
* The key_len parameter should be one of 30, 38, or 46 for
|
||||
* AES-128, AES-192, and AES-256 respectively. Note, this key_len
|
||||
* value is inflated, as it also accounts for the 112 bit salt
|
||||
* value. The tlen argument is for the AEAD tag length, which
|
||||
* isn't used in counter mode.
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_icm_openssl_alloc(srtp_cipher_t **c,
|
||||
int key_len,
|
||||
int tlen)
|
||||
{
|
||||
srtp_aes_icm_ctx_t *icm;
|
||||
|
||||
debug_print(srtp_mod_aes_icm, "allocating cipher with key length %d",
|
||||
key_len);
|
||||
|
||||
/*
|
||||
* Verify the key_len is valid for one of: AES-128/192/256
|
||||
*/
|
||||
if (key_len != SRTP_AES_ICM_128_KEY_LEN_WSALT &&
|
||||
key_len != SRTP_AES_ICM_192_KEY_LEN_WSALT &&
|
||||
key_len != SRTP_AES_ICM_256_KEY_LEN_WSALT) {
|
||||
return srtp_err_status_bad_param;
|
||||
}
|
||||
|
||||
/* allocate memory a cipher of type aes_icm */
|
||||
*c = (srtp_cipher_t *)srtp_crypto_alloc(sizeof(srtp_cipher_t));
|
||||
if (*c == NULL) {
|
||||
return srtp_err_status_alloc_fail;
|
||||
}
|
||||
|
||||
icm = (srtp_aes_icm_ctx_t *)srtp_crypto_alloc(sizeof(srtp_aes_icm_ctx_t));
|
||||
if (icm == NULL) {
|
||||
srtp_crypto_free(*c);
|
||||
*c = NULL;
|
||||
return srtp_err_status_alloc_fail;
|
||||
}
|
||||
|
||||
icm->ctx = EVP_CIPHER_CTX_new();
|
||||
if (icm->ctx == NULL) {
|
||||
srtp_crypto_free(icm);
|
||||
srtp_crypto_free(*c);
|
||||
*c = NULL;
|
||||
return srtp_err_status_alloc_fail;
|
||||
}
|
||||
|
||||
/* set pointers */
|
||||
(*c)->state = icm;
|
||||
|
||||
/* setup cipher parameters */
|
||||
switch (key_len) {
|
||||
case SRTP_AES_ICM_128_KEY_LEN_WSALT:
|
||||
(*c)->algorithm = SRTP_AES_ICM_128;
|
||||
(*c)->type = &srtp_aes_icm_128;
|
||||
icm->key_size = SRTP_AES_128_KEY_LEN;
|
||||
break;
|
||||
case SRTP_AES_ICM_192_KEY_LEN_WSALT:
|
||||
(*c)->algorithm = SRTP_AES_ICM_192;
|
||||
(*c)->type = &srtp_aes_icm_192;
|
||||
icm->key_size = SRTP_AES_192_KEY_LEN;
|
||||
break;
|
||||
case SRTP_AES_ICM_256_KEY_LEN_WSALT:
|
||||
(*c)->algorithm = SRTP_AES_ICM_256;
|
||||
(*c)->type = &srtp_aes_icm_256;
|
||||
icm->key_size = SRTP_AES_256_KEY_LEN;
|
||||
break;
|
||||
}
|
||||
|
||||
/* set key size */
|
||||
(*c)->key_len = key_len;
|
||||
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
/*
|
||||
* This function deallocates an instance of this engine
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_icm_openssl_dealloc(srtp_cipher_t *c)
|
||||
{
|
||||
srtp_aes_icm_ctx_t *ctx;
|
||||
|
||||
if (c == NULL) {
|
||||
return srtp_err_status_bad_param;
|
||||
}
|
||||
|
||||
/*
|
||||
* Free the EVP context
|
||||
*/
|
||||
ctx = (srtp_aes_icm_ctx_t *)c->state;
|
||||
if (ctx != NULL) {
|
||||
EVP_CIPHER_CTX_free(ctx->ctx);
|
||||
/* zeroize the key material */
|
||||
octet_string_set_to_zero(ctx, sizeof(srtp_aes_icm_ctx_t));
|
||||
srtp_crypto_free(ctx);
|
||||
}
|
||||
|
||||
/* free memory */
|
||||
srtp_crypto_free(c);
|
||||
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
/*
|
||||
* aes_icm_openssl_context_init(...) initializes the aes_icm_context
|
||||
* using the value in key[].
|
||||
*
|
||||
* the key is the secret key
|
||||
*
|
||||
* the salt is unpredictable (but not necessarily secret) data which
|
||||
* randomizes the starting point in the keystream
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_icm_openssl_context_init(void *cv,
|
||||
const uint8_t *key)
|
||||
{
|
||||
srtp_aes_icm_ctx_t *c = (srtp_aes_icm_ctx_t *)cv;
|
||||
const EVP_CIPHER *evp;
|
||||
|
||||
/*
|
||||
* set counter and initial values to 'offset' value, being careful not to
|
||||
* go past the end of the key buffer
|
||||
*/
|
||||
v128_set_to_zero(&c->counter);
|
||||
v128_set_to_zero(&c->offset);
|
||||
memcpy(&c->counter, key + c->key_size, SRTP_SALT_LEN);
|
||||
memcpy(&c->offset, key + c->key_size, SRTP_SALT_LEN);
|
||||
|
||||
/* force last two octets of the offset to zero (for srtp compatibility) */
|
||||
c->offset.v8[SRTP_SALT_LEN] = c->offset.v8[SRTP_SALT_LEN + 1] = 0;
|
||||
c->counter.v8[SRTP_SALT_LEN] = c->counter.v8[SRTP_SALT_LEN + 1] = 0;
|
||||
|
||||
debug_print(srtp_mod_aes_icm, "key: %s",
|
||||
srtp_octet_string_hex_string(key, c->key_size));
|
||||
debug_print(srtp_mod_aes_icm, "offset: %s", v128_hex_string(&c->offset));
|
||||
|
||||
switch (c->key_size) {
|
||||
case SRTP_AES_256_KEY_LEN:
|
||||
evp = EVP_aes_256_ctr();
|
||||
break;
|
||||
case SRTP_AES_192_KEY_LEN:
|
||||
evp = EVP_aes_192_ctr();
|
||||
break;
|
||||
case SRTP_AES_128_KEY_LEN:
|
||||
evp = EVP_aes_128_ctr();
|
||||
break;
|
||||
default:
|
||||
return srtp_err_status_bad_param;
|
||||
break;
|
||||
}
|
||||
|
||||
if (!EVP_EncryptInit_ex(c->ctx, evp, NULL, key, NULL)) {
|
||||
return srtp_err_status_fail;
|
||||
} else {
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
/*
|
||||
* aes_icm_set_iv(c, iv) sets the counter value to the exor of iv with
|
||||
* the offset
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_icm_openssl_set_iv(
|
||||
void *cv,
|
||||
uint8_t *iv,
|
||||
srtp_cipher_direction_t dir)
|
||||
{
|
||||
srtp_aes_icm_ctx_t *c = (srtp_aes_icm_ctx_t *)cv;
|
||||
v128_t nonce;
|
||||
|
||||
/* set nonce (for alignment) */
|
||||
v128_copy_octet_string(&nonce, iv);
|
||||
|
||||
debug_print(srtp_mod_aes_icm, "setting iv: %s", v128_hex_string(&nonce));
|
||||
|
||||
v128_xor(&c->counter, &c->offset, &nonce);
|
||||
|
||||
debug_print(srtp_mod_aes_icm, "set_counter: %s",
|
||||
v128_hex_string(&c->counter));
|
||||
|
||||
if (!EVP_EncryptInit_ex(c->ctx, NULL, NULL, NULL, c->counter.v8)) {
|
||||
return srtp_err_status_fail;
|
||||
} else {
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* This function encrypts a buffer using AES CTR mode
|
||||
*
|
||||
* Parameters:
|
||||
* c Crypto context
|
||||
* buf data to encrypt
|
||||
* enc_len length of encrypt buffer
|
||||
*/
|
||||
static srtp_err_status_t srtp_aes_icm_openssl_encrypt(void *cv,
|
||||
unsigned char *buf,
|
||||
unsigned int *enc_len)
|
||||
{
|
||||
srtp_aes_icm_ctx_t *c = (srtp_aes_icm_ctx_t *)cv;
|
||||
int len = 0;
|
||||
|
||||
debug_print(srtp_mod_aes_icm, "rs0: %s", v128_hex_string(&c->counter));
|
||||
|
||||
if (!EVP_EncryptUpdate(c->ctx, buf, &len, buf, *enc_len)) {
|
||||
return srtp_err_status_cipher_fail;
|
||||
}
|
||||
*enc_len = len;
|
||||
|
||||
if (!EVP_EncryptFinal_ex(c->ctx, buf, &len)) {
|
||||
return srtp_err_status_cipher_fail;
|
||||
}
|
||||
*enc_len += len;
|
||||
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
/*
|
||||
* Name of this crypto engine
|
||||
*/
|
||||
static const char srtp_aes_icm_128_openssl_description[] =
|
||||
"AES-128 counter mode using openssl";
|
||||
static const char srtp_aes_icm_192_openssl_description[] =
|
||||
"AES-192 counter mode using openssl";
|
||||
static const char srtp_aes_icm_256_openssl_description[] =
|
||||
"AES-256 counter mode using openssl";
|
||||
|
||||
/*
|
||||
* KAT values for AES self-test. These
|
||||
* values came from the legacy libsrtp code.
|
||||
*/
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_128_test_case_0_key[SRTP_AES_ICM_128_KEY_LEN_WSALT] = {
|
||||
0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6,
|
||||
0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c,
|
||||
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
|
||||
0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static uint8_t srtp_aes_icm_128_test_case_0_nonce[16] = {
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_128_test_case_0_plaintext[32] = {
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_128_test_case_0_ciphertext[32] = {
|
||||
0xe0, 0x3e, 0xad, 0x09, 0x35, 0xc9, 0x5e, 0x80,
|
||||
0xe1, 0x66, 0xb1, 0x6d, 0xd9, 0x2b, 0x4e, 0xb4,
|
||||
0xd2, 0x35, 0x13, 0x16, 0x2b, 0x02, 0xd0, 0xf7,
|
||||
0x2a, 0x43, 0xa2, 0xfe, 0x4a, 0x5f, 0x97, 0xab
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
static const srtp_cipher_test_case_t srtp_aes_icm_128_test_case_0 = {
|
||||
SRTP_AES_ICM_128_KEY_LEN_WSALT, /* octets in key */
|
||||
srtp_aes_icm_128_test_case_0_key, /* key */
|
||||
srtp_aes_icm_128_test_case_0_nonce, /* packet index */
|
||||
32, /* octets in plaintext */
|
||||
srtp_aes_icm_128_test_case_0_plaintext, /* plaintext */
|
||||
32, /* octets in ciphertext */
|
||||
srtp_aes_icm_128_test_case_0_ciphertext, /* ciphertext */
|
||||
0, /* */
|
||||
NULL, /* */
|
||||
0, /* */
|
||||
NULL /* pointer to next testcase */
|
||||
};
|
||||
|
||||
/*
|
||||
* KAT values for AES-192-CTR self-test. These
|
||||
* values came from section 7 of RFC 6188.
|
||||
*/
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_192_test_case_0_key[SRTP_AES_ICM_192_KEY_LEN_WSALT] = {
|
||||
0xea, 0xb2, 0x34, 0x76, 0x4e, 0x51, 0x7b, 0x2d,
|
||||
0x3d, 0x16, 0x0d, 0x58, 0x7d, 0x8c, 0x86, 0x21,
|
||||
0x97, 0x40, 0xf6, 0x5f, 0x99, 0xb6, 0xbc, 0xf7,
|
||||
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
|
||||
0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static uint8_t srtp_aes_icm_192_test_case_0_nonce[16] = {
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_192_test_case_0_plaintext[32] = {
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_192_test_case_0_ciphertext[32] = {
|
||||
0x35, 0x09, 0x6c, 0xba, 0x46, 0x10, 0x02, 0x8d,
|
||||
0xc1, 0xb5, 0x75, 0x03, 0x80, 0x4c, 0xe3, 0x7c,
|
||||
0x5d, 0xe9, 0x86, 0x29, 0x1d, 0xcc, 0xe1, 0x61,
|
||||
0xd5, 0x16, 0x5e, 0xc4, 0x56, 0x8f, 0x5c, 0x9a
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
static const srtp_cipher_test_case_t srtp_aes_icm_192_test_case_0 = {
|
||||
SRTP_AES_ICM_192_KEY_LEN_WSALT, /* octets in key */
|
||||
srtp_aes_icm_192_test_case_0_key, /* key */
|
||||
srtp_aes_icm_192_test_case_0_nonce, /* packet index */
|
||||
32, /* octets in plaintext */
|
||||
srtp_aes_icm_192_test_case_0_plaintext, /* plaintext */
|
||||
32, /* octets in ciphertext */
|
||||
srtp_aes_icm_192_test_case_0_ciphertext, /* ciphertext */
|
||||
0, /* */
|
||||
NULL, /* */
|
||||
0, /* */
|
||||
NULL /* pointer to next testcase */
|
||||
};
|
||||
|
||||
/*
|
||||
* KAT values for AES-256-CTR self-test. These
|
||||
* values came from section 7 of RFC 6188.
|
||||
*/
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_256_test_case_0_key[SRTP_AES_ICM_256_KEY_LEN_WSALT] = {
|
||||
0x57, 0xf8, 0x2f, 0xe3, 0x61, 0x3f, 0xd1, 0x70,
|
||||
0xa8, 0x5e, 0xc9, 0x3c, 0x40, 0xb1, 0xf0, 0x92,
|
||||
0x2e, 0xc4, 0xcb, 0x0d, 0xc0, 0x25, 0xb5, 0x82,
|
||||
0x72, 0x14, 0x7c, 0xc4, 0x38, 0x94, 0x4a, 0x98,
|
||||
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
|
||||
0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static uint8_t srtp_aes_icm_256_test_case_0_nonce[16] = {
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_256_test_case_0_plaintext[32] = {
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_aes_icm_256_test_case_0_ciphertext[32] = {
|
||||
0x92, 0xbd, 0xd2, 0x8a, 0x93, 0xc3, 0xf5, 0x25,
|
||||
0x11, 0xc6, 0x77, 0xd0, 0x8b, 0x55, 0x15, 0xa4,
|
||||
0x9d, 0xa7, 0x1b, 0x23, 0x78, 0xa8, 0x54, 0xf6,
|
||||
0x70, 0x50, 0x75, 0x6d, 0xed, 0x16, 0x5b, 0xac
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
static const srtp_cipher_test_case_t srtp_aes_icm_256_test_case_0 = {
|
||||
SRTP_AES_ICM_256_KEY_LEN_WSALT, /* octets in key */
|
||||
srtp_aes_icm_256_test_case_0_key, /* key */
|
||||
srtp_aes_icm_256_test_case_0_nonce, /* packet index */
|
||||
32, /* octets in plaintext */
|
||||
srtp_aes_icm_256_test_case_0_plaintext, /* plaintext */
|
||||
32, /* octets in ciphertext */
|
||||
srtp_aes_icm_256_test_case_0_ciphertext, /* ciphertext */
|
||||
0, /* */
|
||||
NULL, /* */
|
||||
0, /* */
|
||||
NULL /* pointer to next testcase */
|
||||
};
|
||||
|
||||
/*
|
||||
* This is the function table for this crypto engine.
|
||||
* note: the encrypt function is identical to the decrypt function
|
||||
*/
|
||||
const srtp_cipher_type_t srtp_aes_icm_128 = {
|
||||
srtp_aes_icm_openssl_alloc, /* */
|
||||
srtp_aes_icm_openssl_dealloc, /* */
|
||||
srtp_aes_icm_openssl_context_init, /* */
|
||||
0, /* set_aad */
|
||||
srtp_aes_icm_openssl_encrypt, /* */
|
||||
srtp_aes_icm_openssl_encrypt, /* */
|
||||
srtp_aes_icm_openssl_set_iv, /* */
|
||||
0, /* get_tag */
|
||||
srtp_aes_icm_128_openssl_description, /* */
|
||||
&srtp_aes_icm_128_test_case_0, /* */
|
||||
SRTP_AES_ICM_128 /* */
|
||||
};
|
||||
|
||||
/*
|
||||
* This is the function table for this crypto engine.
|
||||
* note: the encrypt function is identical to the decrypt function
|
||||
*/
|
||||
const srtp_cipher_type_t srtp_aes_icm_192 = {
|
||||
srtp_aes_icm_openssl_alloc, /* */
|
||||
srtp_aes_icm_openssl_dealloc, /* */
|
||||
srtp_aes_icm_openssl_context_init, /* */
|
||||
0, /* set_aad */
|
||||
srtp_aes_icm_openssl_encrypt, /* */
|
||||
srtp_aes_icm_openssl_encrypt, /* */
|
||||
srtp_aes_icm_openssl_set_iv, /* */
|
||||
0, /* get_tag */
|
||||
srtp_aes_icm_192_openssl_description, /* */
|
||||
&srtp_aes_icm_192_test_case_0, /* */
|
||||
SRTP_AES_ICM_192 /* */
|
||||
};
|
||||
|
||||
/*
|
||||
* This is the function table for this crypto engine.
|
||||
* note: the encrypt function is identical to the decrypt function
|
||||
*/
|
||||
const srtp_cipher_type_t srtp_aes_icm_256 = {
|
||||
srtp_aes_icm_openssl_alloc, /* */
|
||||
srtp_aes_icm_openssl_dealloc, /* */
|
||||
srtp_aes_icm_openssl_context_init, /* */
|
||||
0, /* set_aad */
|
||||
srtp_aes_icm_openssl_encrypt, /* */
|
||||
srtp_aes_icm_openssl_encrypt, /* */
|
||||
srtp_aes_icm_openssl_set_iv, /* */
|
||||
0, /* get_tag */
|
||||
srtp_aes_icm_256_openssl_description, /* */
|
||||
&srtp_aes_icm_256_test_case_0, /* */
|
||||
SRTP_AES_ICM_256 /* */
|
||||
};
|
||||
273
netwerk/srtp/src/crypto/hash/hmac_ossl.c
Normal file
273
netwerk/srtp/src/crypto/hash/hmac_ossl.c
Normal file
@ -0,0 +1,273 @@
|
||||
/*
|
||||
* hmac_ossl.c
|
||||
*
|
||||
* Implementation of hmac srtp_auth_type_t that leverages OpenSSL
|
||||
*
|
||||
* John A. Foley
|
||||
* Cisco Systems, Inc.
|
||||
*/
|
||||
/*
|
||||
*
|
||||
* Copyright(c) 2013-2017, Cisco Systems, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
*
|
||||
* Redistributions in binary form must reproduce the above
|
||||
* copyright notice, this list of conditions and the following
|
||||
* disclaimer in the documentation and/or other materials provided
|
||||
* with the distribution.
|
||||
*
|
||||
* Neither the name of the Cisco Systems, Inc. nor the names of its
|
||||
* contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
|
||||
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||||
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||||
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
||||
* OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
*/
|
||||
|
||||
#ifdef HAVE_CONFIG_H
|
||||
#include <config.h>
|
||||
#endif
|
||||
|
||||
#include "auth.h"
|
||||
#include "alloc.h"
|
||||
#include "err.h" /* for srtp_debug */
|
||||
#include <openssl/evp.h>
|
||||
#include <openssl/hmac.h>
|
||||
|
||||
#define SHA1_DIGEST_SIZE 20
|
||||
|
||||
/* the debug module for authentiation */
|
||||
|
||||
srtp_debug_module_t srtp_mod_hmac = {
|
||||
0, /* debugging is off by default */
|
||||
"hmac sha-1 openssl" /* printable name for module */
|
||||
};
|
||||
|
||||
static srtp_err_status_t srtp_hmac_alloc(srtp_auth_t **a,
|
||||
int key_len,
|
||||
int out_len)
|
||||
{
|
||||
extern const srtp_auth_type_t srtp_hmac;
|
||||
|
||||
debug_print(srtp_mod_hmac, "allocating auth func with key length %d",
|
||||
key_len);
|
||||
debug_print(srtp_mod_hmac, " tag length %d",
|
||||
out_len);
|
||||
|
||||
/* check output length - should be less than 20 bytes */
|
||||
if (out_len > SHA1_DIGEST_SIZE) {
|
||||
return srtp_err_status_bad_param;
|
||||
}
|
||||
|
||||
/* OpenSSL 1.1.0 made HMAC_CTX an opaque structure, which must be allocated
|
||||
using HMAC_CTX_new. But this function doesn't exist in OpenSSL 1.0.x. */
|
||||
#if OPENSSL_VERSION_NUMBER < 0x10100000L || LIBRESSL_VERSION_NUMBER
|
||||
{
|
||||
/* allocate memory for auth and HMAC_CTX structures */
|
||||
uint8_t *pointer;
|
||||
HMAC_CTX *new_hmac_ctx;
|
||||
pointer = (uint8_t *)srtp_crypto_alloc(sizeof(HMAC_CTX) +
|
||||
sizeof(srtp_auth_t));
|
||||
if (pointer == NULL) {
|
||||
return srtp_err_status_alloc_fail;
|
||||
}
|
||||
*a = (srtp_auth_t *)pointer;
|
||||
(*a)->state = pointer + sizeof(srtp_auth_t);
|
||||
new_hmac_ctx = (HMAC_CTX *)((*a)->state);
|
||||
|
||||
HMAC_CTX_init(new_hmac_ctx);
|
||||
}
|
||||
|
||||
#else
|
||||
*a = (srtp_auth_t *)srtp_crypto_alloc(sizeof(srtp_auth_t));
|
||||
if (*a == NULL) {
|
||||
return srtp_err_status_alloc_fail;
|
||||
}
|
||||
|
||||
(*a)->state = HMAC_CTX_new();
|
||||
if ((*a)->state == NULL) {
|
||||
srtp_crypto_free(*a);
|
||||
*a = NULL;
|
||||
return srtp_err_status_alloc_fail;
|
||||
}
|
||||
#endif
|
||||
|
||||
/* set pointers */
|
||||
(*a)->type = &srtp_hmac;
|
||||
(*a)->out_len = out_len;
|
||||
(*a)->key_len = key_len;
|
||||
(*a)->prefix_len = 0;
|
||||
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
static srtp_err_status_t srtp_hmac_dealloc(srtp_auth_t *a)
|
||||
{
|
||||
HMAC_CTX *hmac_ctx;
|
||||
|
||||
hmac_ctx = (HMAC_CTX *)a->state;
|
||||
|
||||
#if OPENSSL_VERSION_NUMBER < 0x10100000L || LIBRESSL_VERSION_NUMBER
|
||||
HMAC_CTX_cleanup(hmac_ctx);
|
||||
|
||||
/* zeroize entire state*/
|
||||
octet_string_set_to_zero(a, sizeof(HMAC_CTX) + sizeof(srtp_auth_t));
|
||||
|
||||
#else
|
||||
HMAC_CTX_free(hmac_ctx);
|
||||
|
||||
/* zeroize entire state*/
|
||||
octet_string_set_to_zero(a, sizeof(srtp_auth_t));
|
||||
#endif
|
||||
|
||||
/* free memory */
|
||||
srtp_crypto_free(a);
|
||||
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
static srtp_err_status_t srtp_hmac_start(void *statev)
|
||||
{
|
||||
HMAC_CTX *state = (HMAC_CTX *)statev;
|
||||
|
||||
if (HMAC_Init_ex(state, NULL, 0, NULL, NULL) == 0)
|
||||
return srtp_err_status_auth_fail;
|
||||
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
static srtp_err_status_t srtp_hmac_init(void *statev,
|
||||
const uint8_t *key,
|
||||
int key_len)
|
||||
{
|
||||
HMAC_CTX *state = (HMAC_CTX *)statev;
|
||||
|
||||
if (HMAC_Init_ex(state, key, key_len, EVP_sha1(), NULL) == 0)
|
||||
return srtp_err_status_auth_fail;
|
||||
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
static srtp_err_status_t srtp_hmac_update(void *statev,
|
||||
const uint8_t *message,
|
||||
int msg_octets)
|
||||
{
|
||||
HMAC_CTX *state = (HMAC_CTX *)statev;
|
||||
|
||||
debug_print(srtp_mod_hmac, "input: %s",
|
||||
srtp_octet_string_hex_string(message, msg_octets));
|
||||
|
||||
if (HMAC_Update(state, message, msg_octets) == 0)
|
||||
return srtp_err_status_auth_fail;
|
||||
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
static srtp_err_status_t srtp_hmac_compute(void *statev,
|
||||
const uint8_t *message,
|
||||
int msg_octets,
|
||||
int tag_len,
|
||||
uint8_t *result)
|
||||
{
|
||||
HMAC_CTX *state = (HMAC_CTX *)statev;
|
||||
uint8_t hash_value[SHA1_DIGEST_SIZE];
|
||||
int i;
|
||||
unsigned int len;
|
||||
|
||||
/* check tag length, return error if we can't provide the value expected */
|
||||
if (tag_len > SHA1_DIGEST_SIZE) {
|
||||
return srtp_err_status_bad_param;
|
||||
}
|
||||
|
||||
/* hash message, copy output into H */
|
||||
if (HMAC_Update(state, message, msg_octets) == 0)
|
||||
return srtp_err_status_auth_fail;
|
||||
|
||||
if (HMAC_Final(state, hash_value, &len) == 0)
|
||||
return srtp_err_status_auth_fail;
|
||||
|
||||
if (len < tag_len)
|
||||
return srtp_err_status_auth_fail;
|
||||
|
||||
/* copy hash_value to *result */
|
||||
for (i = 0; i < tag_len; i++) {
|
||||
result[i] = hash_value[i];
|
||||
}
|
||||
|
||||
debug_print(srtp_mod_hmac, "output: %s",
|
||||
srtp_octet_string_hex_string(hash_value, tag_len));
|
||||
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
/* begin test case 0 */
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_hmac_test_case_0_key[SHA1_DIGEST_SIZE] = {
|
||||
0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b,
|
||||
0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b,
|
||||
0x0b, 0x0b, 0x0b, 0x0b
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_hmac_test_case_0_data[8] = {
|
||||
0x48, 0x69, 0x20, 0x54, 0x68, 0x65, 0x72, 0x65 /* "Hi There" */
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
/* clang-format off */
|
||||
static const uint8_t srtp_hmac_test_case_0_tag[SHA1_DIGEST_SIZE] = {
|
||||
0xb6, 0x17, 0x31, 0x86, 0x55, 0x05, 0x72, 0x64,
|
||||
0xe2, 0x8b, 0xc0, 0xb6, 0xfb, 0x37, 0x8c, 0x8e,
|
||||
0xf1, 0x46, 0xbe, 0x00
|
||||
};
|
||||
/* clang-format on */
|
||||
|
||||
static const srtp_auth_test_case_t srtp_hmac_test_case_0 = {
|
||||
sizeof(srtp_hmac_test_case_0_key), /* octets in key */
|
||||
srtp_hmac_test_case_0_key, /* key */
|
||||
sizeof(srtp_hmac_test_case_0_data), /* octets in data */
|
||||
srtp_hmac_test_case_0_data, /* data */
|
||||
sizeof(srtp_hmac_test_case_0_tag), /* octets in tag */
|
||||
srtp_hmac_test_case_0_tag, /* tag */
|
||||
NULL /* pointer to next testcase */
|
||||
};
|
||||
|
||||
/* end test case 0 */
|
||||
|
||||
static const char srtp_hmac_description[] =
|
||||
"hmac sha-1 authentication function";
|
||||
|
||||
/*
|
||||
* srtp_auth_type_t hmac is the hmac metaobject
|
||||
*/
|
||||
|
||||
const srtp_auth_type_t srtp_hmac = {
|
||||
srtp_hmac_alloc, /* */
|
||||
srtp_hmac_dealloc, /* */
|
||||
srtp_hmac_init, /* */
|
||||
srtp_hmac_compute, /* */
|
||||
srtp_hmac_update, /* */
|
||||
srtp_hmac_start, /* */
|
||||
srtp_hmac_description, /* */
|
||||
&srtp_hmac_test_case_0, /* */
|
||||
SRTP_HMAC_SHA1 /* */
|
||||
};
|
||||
87
netwerk/srtp/src/crypto/include/aes_gcm.h
Normal file
87
netwerk/srtp/src/crypto/include/aes_gcm.h
Normal file
@ -0,0 +1,87 @@
|
||||
/*
|
||||
* aes_gcm.h
|
||||
*
|
||||
* Header for AES Galois Counter Mode.
|
||||
*
|
||||
* John A. Foley
|
||||
* Cisco Systems, Inc.
|
||||
*
|
||||
*/
|
||||
/*
|
||||
*
|
||||
* Copyright (c) 2013-2017, Cisco Systems, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
*
|
||||
* Redistributions in binary form must reproduce the above
|
||||
* copyright notice, this list of conditions and the following
|
||||
* disclaimer in the documentation and/or other materials provided
|
||||
* with the distribution.
|
||||
*
|
||||
* Neither the name of the Cisco Systems, Inc. nor the names of its
|
||||
* contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
|
||||
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||||
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||||
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
||||
* OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef AES_GCM_H
|
||||
#define AES_GCM_H
|
||||
|
||||
#include "cipher.h"
|
||||
#include "srtp.h"
|
||||
#include "datatypes.h"
|
||||
|
||||
#ifdef OPENSSL
|
||||
|
||||
#include <openssl/evp.h>
|
||||
#include <openssl/aes.h>
|
||||
|
||||
typedef struct {
|
||||
int key_size;
|
||||
int tag_len;
|
||||
EVP_CIPHER_CTX *ctx;
|
||||
srtp_cipher_direction_t dir;
|
||||
} srtp_aes_gcm_ctx_t;
|
||||
|
||||
#endif /* OPENSSL */
|
||||
|
||||
#ifdef NSS
|
||||
|
||||
#include <pk11pub.h>
|
||||
|
||||
#define MAX_AD_SIZE 2048
|
||||
|
||||
typedef struct {
|
||||
int key_size;
|
||||
int tag_size;
|
||||
srtp_cipher_direction_t dir;
|
||||
PK11SymKey *key;
|
||||
uint8_t iv[12];
|
||||
uint8_t aad[MAX_AD_SIZE];
|
||||
int aad_size;
|
||||
CK_GCM_PARAMS params;
|
||||
uint8_t tag[16];
|
||||
} srtp_aes_gcm_ctx_t;
|
||||
|
||||
#endif /* NSS */
|
||||
|
||||
#endif /* AES_GCM_H */
|
||||
81
netwerk/srtp/src/crypto/include/aes_icm_ext.h
Normal file
81
netwerk/srtp/src/crypto/include/aes_icm_ext.h
Normal file
@ -0,0 +1,81 @@
|
||||
/*
|
||||
* aes_icm.h
|
||||
*
|
||||
* Header for AES Integer Counter Mode.
|
||||
*
|
||||
* David A. McGrew
|
||||
* Cisco Systems, Inc.
|
||||
*
|
||||
*/
|
||||
/*
|
||||
*
|
||||
* Copyright (c) 2001-2017, Cisco Systems, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
*
|
||||
* Redistributions in binary form must reproduce the above
|
||||
* copyright notice, this list of conditions and the following
|
||||
* disclaimer in the documentation and/or other materials provided
|
||||
* with the distribution.
|
||||
*
|
||||
* Neither the name of the Cisco Systems, Inc. nor the names of its
|
||||
* contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
|
||||
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||||
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||||
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
||||
* OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef AES_ICM_H
|
||||
#define AES_ICM_H
|
||||
|
||||
#include "cipher.h"
|
||||
#include "datatypes.h"
|
||||
|
||||
#ifdef OPENSSL
|
||||
|
||||
#include <openssl/evp.h>
|
||||
#include <openssl/aes.h>
|
||||
|
||||
typedef struct {
|
||||
v128_t counter; /* holds the counter value */
|
||||
v128_t offset; /* initial offset value */
|
||||
int key_size;
|
||||
EVP_CIPHER_CTX *ctx;
|
||||
} srtp_aes_icm_ctx_t;
|
||||
|
||||
#endif /* OPENSSL */
|
||||
|
||||
#ifdef NSS
|
||||
|
||||
#include <pk11pub.h>
|
||||
|
||||
typedef struct {
|
||||
v128_t counter;
|
||||
v128_t offset;
|
||||
int key_size;
|
||||
uint8_t iv[16];
|
||||
PK11SymKey *key;
|
||||
PK11Context *ctx;
|
||||
} srtp_aes_icm_ctx_t;
|
||||
|
||||
#endif /* NSS */
|
||||
|
||||
#endif /* AES_ICM_H */
|
||||
@ -44,38 +44,41 @@
|
||||
* cipher types that can be included in the kernel
|
||||
*/
|
||||
|
||||
const srtp_cipher_type_t srtp_null_cipher;
|
||||
const srtp_cipher_type_t srtp_aes_icm_128;
|
||||
const srtp_cipher_type_t srtp_aes_icm_256;
|
||||
#ifdef OPENSSL
|
||||
const srtp_cipher_type_t srtp_aes_icm_192;
|
||||
const srtp_cipher_type_t srtp_aes_gcm_128_openssl;
|
||||
const srtp_cipher_type_t srtp_aes_gcm_256_openssl;
|
||||
extern const srtp_cipher_type_t srtp_null_cipher;
|
||||
extern const srtp_cipher_type_t srtp_aes_icm_128;
|
||||
extern const srtp_cipher_type_t srtp_aes_icm_256;
|
||||
#ifdef GCM
|
||||
extern const srtp_cipher_type_t srtp_aes_icm_192;
|
||||
extern const srtp_cipher_type_t srtp_aes_gcm_128;
|
||||
extern const srtp_cipher_type_t srtp_aes_gcm_256;
|
||||
#endif
|
||||
|
||||
/*
|
||||
* auth func types that can be included in the kernel
|
||||
*/
|
||||
|
||||
const srtp_auth_type_t srtp_null_auth;
|
||||
const srtp_auth_type_t srtp_hmac;
|
||||
extern const srtp_auth_type_t srtp_null_auth;
|
||||
extern const srtp_auth_type_t srtp_hmac;
|
||||
|
||||
/*
|
||||
* other generic debug modules that can be included in the kernel
|
||||
*/
|
||||
|
||||
srtp_debug_module_t srtp_mod_auth;
|
||||
srtp_debug_module_t srtp_mod_cipher;
|
||||
srtp_debug_module_t mod_stat;
|
||||
srtp_debug_module_t mod_alloc;
|
||||
extern srtp_debug_module_t srtp_mod_auth;
|
||||
extern srtp_debug_module_t srtp_mod_cipher;
|
||||
extern srtp_debug_module_t srtp_mod_stat;
|
||||
extern srtp_debug_module_t srtp_mod_alloc;
|
||||
|
||||
/* debug modules for cipher types */
|
||||
srtp_debug_module_t srtp_mod_aes_icm;
|
||||
extern srtp_debug_module_t srtp_mod_aes_icm;
|
||||
#ifdef OPENSSL
|
||||
srtp_debug_module_t srtp_mod_aes_gcm;
|
||||
extern srtp_debug_module_t srtp_mod_aes_gcm;
|
||||
#endif
|
||||
#ifdef NSS
|
||||
extern srtp_debug_module_t srtp_mod_aes_gcm;
|
||||
#endif
|
||||
|
||||
/* debug modules for auth types */
|
||||
srtp_debug_module_t srtp_mod_hmac;
|
||||
extern srtp_debug_module_t srtp_mod_hmac;
|
||||
|
||||
#endif
|
||||
|
||||
@ -81,7 +81,7 @@ extern "C" {
|
||||
|
||||
/* OpenSSL 1.1.0 made EVP_MD_CTX an opaque structure, which must be allocated
|
||||
using EVP_MD_CTX_new. But this function doesn't exist in OpenSSL 1.0.x. */
|
||||
#if OPENSSL_VERSION_NUMBER < 0x10100000L
|
||||
#if OPENSSL_VERSION_NUMBER < 0x10100000L || LIBRESSL_VERSION_NUMBER
|
||||
|
||||
typedef EVP_MD_CTX srtp_sha1_ctx_t;
|
||||
|
||||
|
||||
@ -51,7 +51,7 @@
|
||||
|
||||
/* the debug module for memory allocation */
|
||||
|
||||
srtp_debug_module_t mod_alloc = {
|
||||
srtp_debug_module_t srtp_mod_alloc = {
|
||||
0, /* debugging is off by default */
|
||||
"alloc" /* printable name for module */
|
||||
};
|
||||
@ -71,12 +71,16 @@ void *srtp_crypto_alloc(size_t size)
|
||||
{
|
||||
void *ptr;
|
||||
|
||||
if (!size) {
|
||||
return NULL;
|
||||
}
|
||||
|
||||
ptr = calloc(1, size);
|
||||
|
||||
if (ptr) {
|
||||
debug_print(mod_alloc, "(location: %p) allocated", ptr);
|
||||
debug_print(srtp_mod_alloc, "(location: %p) allocated", ptr);
|
||||
} else {
|
||||
debug_print(mod_alloc, "allocation failed (asked for %d bytes)\n",
|
||||
debug_print(srtp_mod_alloc, "allocation failed (asked for %d bytes)\n",
|
||||
size);
|
||||
}
|
||||
|
||||
@ -85,7 +89,7 @@ void *srtp_crypto_alloc(size_t size)
|
||||
|
||||
void srtp_crypto_free(void *ptr)
|
||||
{
|
||||
debug_print(mod_alloc, "(location: %p) freed", ptr);
|
||||
debug_print(srtp_mod_alloc, "(location: %p) freed", ptr);
|
||||
|
||||
free(ptr);
|
||||
}
|
||||
|
||||
@ -101,11 +101,11 @@ srtp_err_status_t srtp_crypto_kernel_init()
|
||||
if (status) {
|
||||
return status;
|
||||
}
|
||||
status = srtp_crypto_kernel_load_debug_module(&mod_stat);
|
||||
status = srtp_crypto_kernel_load_debug_module(&srtp_mod_stat);
|
||||
if (status) {
|
||||
return status;
|
||||
}
|
||||
status = srtp_crypto_kernel_load_debug_module(&mod_alloc);
|
||||
status = srtp_crypto_kernel_load_debug_module(&srtp_mod_alloc);
|
||||
if (status) {
|
||||
return status;
|
||||
}
|
||||
@ -130,18 +130,18 @@ srtp_err_status_t srtp_crypto_kernel_init()
|
||||
if (status) {
|
||||
return status;
|
||||
}
|
||||
#ifdef OPENSSL
|
||||
#ifdef GCM
|
||||
status = srtp_crypto_kernel_load_cipher_type(&srtp_aes_icm_192,
|
||||
SRTP_AES_ICM_192);
|
||||
if (status) {
|
||||
return status;
|
||||
}
|
||||
status = srtp_crypto_kernel_load_cipher_type(&srtp_aes_gcm_128_openssl,
|
||||
status = srtp_crypto_kernel_load_cipher_type(&srtp_aes_gcm_128,
|
||||
SRTP_AES_GCM_128);
|
||||
if (status) {
|
||||
return status;
|
||||
}
|
||||
status = srtp_crypto_kernel_load_cipher_type(&srtp_aes_gcm_256_openssl,
|
||||
status = srtp_crypto_kernel_load_cipher_type(&srtp_aes_gcm_256,
|
||||
SRTP_AES_GCM_256);
|
||||
if (status) {
|
||||
return status;
|
||||
@ -512,7 +512,7 @@ srtp_err_status_t srtp_crypto_kernel_load_debug_module(
|
||||
srtp_kernel_debug_module_t *kdm, *new;
|
||||
|
||||
/* defensive coding */
|
||||
if (new_dm == NULL) {
|
||||
if (new_dm == NULL || new_dm->name == NULL) {
|
||||
return srtp_err_status_bad_param;
|
||||
}
|
||||
|
||||
|
||||
@ -328,9 +328,11 @@ int bitvector_alloc(bitvector_t *v, unsigned long length)
|
||||
l = length / bits_per_word * bytes_per_word;
|
||||
|
||||
/* allocate memory, then set parameters */
|
||||
if (l == 0)
|
||||
if (l == 0) {
|
||||
v->word = NULL;
|
||||
else {
|
||||
v->length = 0;
|
||||
return -1;
|
||||
} else {
|
||||
v->word = (uint32_t *)srtp_crypto_alloc(l);
|
||||
if (v->word == NULL) {
|
||||
v->length = 0;
|
||||
@ -434,7 +436,7 @@ void srtp_cleanse(void *s, size_t len)
|
||||
|
||||
void octet_string_set_to_zero(void *s, size_t len)
|
||||
{
|
||||
#ifdef OPENSSL
|
||||
#if defined(OPENSSL) && !defined(OPENSSL_CLEANSE_BROKEN)
|
||||
OPENSSL_cleanse(s, len);
|
||||
#else
|
||||
srtp_cleanse(s, len);
|
||||
|
||||
@ -49,7 +49,7 @@
|
||||
|
||||
#include "stat.h"
|
||||
|
||||
srtp_debug_module_t mod_stat = {
|
||||
srtp_debug_module_t srtp_mod_stat = {
|
||||
0, /* debugging is off by default */
|
||||
(char *)"stat test" /* printable module name */
|
||||
};
|
||||
@ -72,7 +72,7 @@ srtp_err_status_t stat_test_monobit(uint8_t *data)
|
||||
data++;
|
||||
}
|
||||
|
||||
debug_print(mod_stat, "bit count: %d", ones_count);
|
||||
debug_print(srtp_mod_stat, "bit count: %d", ones_count);
|
||||
|
||||
if ((ones_count < 9725) || (ones_count > 10275))
|
||||
return srtp_err_status_algo_fail;
|
||||
@ -100,7 +100,7 @@ srtp_err_status_t stat_test_poker(uint8_t *data)
|
||||
poker *= (16.0 / 5000.0);
|
||||
poker -= 5000.0;
|
||||
|
||||
debug_print(mod_stat, "poker test: %f\n", poker);
|
||||
debug_print(srtp_mod_stat, "poker test: %f\n", poker);
|
||||
|
||||
if ((poker < 2.16) || (poker > 46.17))
|
||||
return srtp_err_status_algo_fail;
|
||||
@ -139,14 +139,14 @@ srtp_err_status_t stat_test_runs(uint8_t *data)
|
||||
|
||||
/* check for long runs */
|
||||
if (state > 25) {
|
||||
debug_print(mod_stat, ">25 runs: %d", state);
|
||||
debug_print(srtp_mod_stat, ">25 runs: %d", state);
|
||||
return srtp_err_status_algo_fail;
|
||||
}
|
||||
|
||||
} else if (state < 0) {
|
||||
/* prefix is a gap */
|
||||
if (state < -25) {
|
||||
debug_print(mod_stat, ">25 gaps: %d", state);
|
||||
debug_print(srtp_mod_stat, ">25 gaps: %d", state);
|
||||
return srtp_err_status_algo_fail; /* long-runs test
|
||||
failed */
|
||||
}
|
||||
@ -164,7 +164,7 @@ srtp_err_status_t stat_test_runs(uint8_t *data)
|
||||
if (state > 0) {
|
||||
/* prefix is a run */
|
||||
if (state > 25) {
|
||||
debug_print(mod_stat, ">25 runs (2): %d", state);
|
||||
debug_print(srtp_mod_stat, ">25 runs (2): %d", state);
|
||||
return srtp_err_status_algo_fail; /* long-runs test
|
||||
failed */
|
||||
}
|
||||
@ -180,7 +180,7 @@ srtp_err_status_t stat_test_runs(uint8_t *data)
|
||||
|
||||
/* check for long gaps */
|
||||
if (state < -25) {
|
||||
debug_print(mod_stat, ">25 gaps (2): %d", state);
|
||||
debug_print(srtp_mod_stat, ">25 gaps (2): %d", state);
|
||||
return srtp_err_status_algo_fail;
|
||||
}
|
||||
|
||||
@ -195,12 +195,12 @@ srtp_err_status_t stat_test_runs(uint8_t *data)
|
||||
data++;
|
||||
}
|
||||
|
||||
if (mod_stat.on) {
|
||||
debug_print(mod_stat, "runs test", NULL);
|
||||
if (srtp_mod_stat.on) {
|
||||
debug_print(srtp_mod_stat, "runs test", NULL);
|
||||
for (i = 0; i < 6; i++)
|
||||
debug_print(mod_stat, " runs[]: %d", runs[i]);
|
||||
debug_print(srtp_mod_stat, " runs[]: %d", runs[i]);
|
||||
for (i = 0; i < 6; i++)
|
||||
debug_print(mod_stat, " gaps[]: %d", gaps[i]);
|
||||
debug_print(srtp_mod_stat, " gaps[]: %d", gaps[i]);
|
||||
}
|
||||
|
||||
/* check run and gap counts against the fixed limits */
|
||||
|
||||
@ -51,9 +51,9 @@
|
||||
#include <stdlib.h> /* for rand() */
|
||||
#include "getopt_s.h"
|
||||
#include "cipher.h"
|
||||
#ifdef OPENSSL
|
||||
#include "aes_icm_ossl.h"
|
||||
#include "aes_gcm_ossl.h"
|
||||
#ifdef GCM
|
||||
#include "aes_icm_ext.h"
|
||||
#include "aes_gcm.h"
|
||||
#else
|
||||
#include "aes_icm.h"
|
||||
#endif
|
||||
@ -118,10 +118,10 @@ void check_status(srtp_err_status_t s)
|
||||
extern srtp_cipher_type_t srtp_null_cipher;
|
||||
extern srtp_cipher_type_t srtp_aes_icm_128;
|
||||
extern srtp_cipher_type_t srtp_aes_icm_256;
|
||||
#ifdef OPENSSL
|
||||
#ifdef GCM
|
||||
extern srtp_cipher_type_t srtp_aes_icm_192;
|
||||
extern srtp_cipher_type_t srtp_aes_gcm_128_openssl;
|
||||
extern srtp_cipher_type_t srtp_aes_gcm_256_openssl;
|
||||
extern srtp_cipher_type_t srtp_aes_gcm_128;
|
||||
extern srtp_cipher_type_t srtp_aes_gcm_256;
|
||||
#endif
|
||||
|
||||
int main(int argc, char *argv[])
|
||||
@ -187,21 +187,19 @@ int main(int argc, char *argv[])
|
||||
cipher_driver_test_array_throughput(
|
||||
&srtp_aes_icm_256, SRTP_AES_ICM_256_KEY_LEN_WSALT, num_cipher);
|
||||
|
||||
#ifdef OPENSSL
|
||||
#ifdef GCM
|
||||
for (num_cipher = 1; num_cipher < max_num_cipher; num_cipher *= 8)
|
||||
cipher_driver_test_array_throughput(
|
||||
&srtp_aes_icm_192, SRTP_AES_ICM_192_KEY_LEN_WSALT, num_cipher);
|
||||
|
||||
for (num_cipher = 1; num_cipher < max_num_cipher; num_cipher *= 8) {
|
||||
cipher_driver_test_array_throughput(&srtp_aes_gcm_128_openssl,
|
||||
SRTP_AES_GCM_128_KEY_LEN_WSALT,
|
||||
num_cipher);
|
||||
cipher_driver_test_array_throughput(
|
||||
&srtp_aes_gcm_128, SRTP_AES_GCM_128_KEY_LEN_WSALT, num_cipher);
|
||||
}
|
||||
|
||||
for (num_cipher = 1; num_cipher < max_num_cipher; num_cipher *= 8) {
|
||||
cipher_driver_test_array_throughput(&srtp_aes_gcm_256_openssl,
|
||||
SRTP_AES_GCM_256_KEY_LEN_WSALT,
|
||||
num_cipher);
|
||||
cipher_driver_test_array_throughput(
|
||||
&srtp_aes_gcm_256, SRTP_AES_GCM_256_KEY_LEN_WSALT, num_cipher);
|
||||
}
|
||||
#endif
|
||||
}
|
||||
@ -210,10 +208,10 @@ int main(int argc, char *argv[])
|
||||
cipher_driver_self_test(&srtp_null_cipher);
|
||||
cipher_driver_self_test(&srtp_aes_icm_128);
|
||||
cipher_driver_self_test(&srtp_aes_icm_256);
|
||||
#ifdef OPENSSL
|
||||
#ifdef GCM
|
||||
cipher_driver_self_test(&srtp_aes_icm_192);
|
||||
cipher_driver_self_test(&srtp_aes_gcm_128_openssl);
|
||||
cipher_driver_self_test(&srtp_aes_gcm_256_openssl);
|
||||
cipher_driver_self_test(&srtp_aes_gcm_128);
|
||||
cipher_driver_self_test(&srtp_aes_gcm_256);
|
||||
#endif
|
||||
}
|
||||
|
||||
@ -277,9 +275,9 @@ int main(int argc, char *argv[])
|
||||
status = srtp_cipher_dealloc(c);
|
||||
check_status(status);
|
||||
|
||||
#ifdef OPENSSL
|
||||
/* run the throughput test on the aes_gcm_128_openssl cipher */
|
||||
status = srtp_cipher_type_alloc(&srtp_aes_gcm_128_openssl, &c,
|
||||
#ifdef GCM
|
||||
/* run the throughput test on the aes_gcm_128 cipher */
|
||||
status = srtp_cipher_type_alloc(&srtp_aes_gcm_128, &c,
|
||||
SRTP_AES_GCM_128_KEY_LEN_WSALT, 8);
|
||||
if (status) {
|
||||
fprintf(stderr, "error: can't allocate GCM 128 cipher\n");
|
||||
@ -291,15 +289,13 @@ int main(int argc, char *argv[])
|
||||
cipher_driver_test_throughput(c);
|
||||
}
|
||||
|
||||
if (do_validation) {
|
||||
status = cipher_driver_test_buffering(c);
|
||||
check_status(status);
|
||||
}
|
||||
// GCM ciphers don't do buffering; they're "one shot"
|
||||
|
||||
status = srtp_cipher_dealloc(c);
|
||||
check_status(status);
|
||||
|
||||
/* run the throughput test on the aes_gcm_256_openssl cipher */
|
||||
status = srtp_cipher_type_alloc(&srtp_aes_gcm_256_openssl, &c,
|
||||
/* run the throughput test on the aes_gcm_256 cipher */
|
||||
status = srtp_cipher_type_alloc(&srtp_aes_gcm_256, &c,
|
||||
SRTP_AES_GCM_256_KEY_LEN_WSALT, 16);
|
||||
if (status) {
|
||||
fprintf(stderr, "error: can't allocate GCM 256 cipher\n");
|
||||
@ -311,10 +307,8 @@ int main(int argc, char *argv[])
|
||||
cipher_driver_test_throughput(c);
|
||||
}
|
||||
|
||||
if (do_validation) {
|
||||
status = cipher_driver_test_buffering(c);
|
||||
check_status(status);
|
||||
}
|
||||
// GCM ciphers don't do buffering; they're "one shot"
|
||||
|
||||
status = srtp_cipher_dealloc(c);
|
||||
check_status(status);
|
||||
#endif
|
||||
|
||||
@ -60,6 +60,8 @@ void print_string(char *s);
|
||||
|
||||
void test_bswap(void);
|
||||
|
||||
void test_set_to_zero(void);
|
||||
|
||||
int main(void)
|
||||
{
|
||||
/*
|
||||
@ -135,6 +137,7 @@ int main(void)
|
||||
printf(" } \n");
|
||||
|
||||
test_bswap();
|
||||
test_set_to_zero();
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -228,3 +231,26 @@ void test_bswap(void)
|
||||
printf("bswapped octet string: %s\n",
|
||||
octet_string_hex_string((uint8_t *)&y, 8));
|
||||
}
|
||||
|
||||
void test_set_to_zero(void)
|
||||
{
|
||||
#define BUFFER_SIZE (16)
|
||||
uint8_t buffer[BUFFER_SIZE];
|
||||
size_t i;
|
||||
|
||||
for (i = 0; i < BUFFER_SIZE; i++) {
|
||||
buffer[i] = i & 0xff;
|
||||
}
|
||||
printf("Buffer before: %s\n", octet_string_hex_string(buffer, BUFFER_SIZE));
|
||||
octet_string_set_to_zero(buffer, BUFFER_SIZE);
|
||||
printf("Buffer after: %s\n", octet_string_hex_string(buffer, BUFFER_SIZE));
|
||||
for (i = 0; i < BUFFER_SIZE; i++) {
|
||||
if (buffer[i]) {
|
||||
fprintf(stderr,
|
||||
"Buffer contents not zero at position %zu (is %d)\n", i,
|
||||
buffer[i]);
|
||||
abort();
|
||||
}
|
||||
}
|
||||
#undef BUFFER_SIZE
|
||||
}
|
||||
|
||||
@ -76,9 +76,9 @@ int main(int argc, char *argv[])
|
||||
int i, j;
|
||||
extern srtp_cipher_type_t srtp_aes_icm_128;
|
||||
extern srtp_cipher_type_t srtp_aes_icm_256;
|
||||
#ifdef OPENSSL
|
||||
extern srtp_cipher_type_t srtp_aes_gcm_128_openssl;
|
||||
extern srtp_cipher_type_t srtp_aes_gcm_256_openssl;
|
||||
#ifdef GCM
|
||||
extern srtp_cipher_type_t srtp_aes_gcm_128;
|
||||
extern srtp_cipher_type_t srtp_aes_gcm_256;
|
||||
#endif
|
||||
srtp_cipher_t *c;
|
||||
/* clang-format off */
|
||||
@ -180,14 +180,14 @@ int main(int argc, char *argv[])
|
||||
}
|
||||
}
|
||||
|
||||
#ifdef OPENSSL
|
||||
#ifdef GCM
|
||||
{
|
||||
printf("running stat_tests on AES-128-GCM, expecting success\n");
|
||||
/* set buffer to cipher output */
|
||||
for (i = 0; i < 2500; i++) {
|
||||
buffer[i] = 0;
|
||||
}
|
||||
err_check(srtp_cipher_type_alloc(&srtp_aes_gcm_128_openssl, &c,
|
||||
err_check(srtp_cipher_type_alloc(&srtp_aes_gcm_128, &c,
|
||||
SRTP_AES_GCM_128_KEY_LEN_WSALT, 8));
|
||||
err_check(srtp_cipher_init(c, key));
|
||||
err_check(
|
||||
@ -219,7 +219,7 @@ int main(int argc, char *argv[])
|
||||
for (i = 0; i < 2500; i++) {
|
||||
buffer[i] = 0;
|
||||
}
|
||||
err_check(srtp_cipher_type_alloc(&srtp_aes_gcm_256_openssl, &c,
|
||||
err_check(srtp_cipher_type_alloc(&srtp_aes_gcm_256, &c,
|
||||
SRTP_AES_GCM_256_KEY_LEN_WSALT, 16));
|
||||
err_check(srtp_cipher_init(c, key));
|
||||
err_check(
|
||||
|
||||
@ -5,8 +5,8 @@
|
||||
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
||||
|
||||
UNIFIED_SOURCES += [
|
||||
'crypto/cipher/aes.c',
|
||||
'crypto/cipher/aes_icm.c',
|
||||
'crypto/cipher/aes_gcm_nss.c',
|
||||
'crypto/cipher/aes_icm_nss.c',
|
||||
'crypto/cipher/cipher.c',
|
||||
'crypto/cipher/null_cipher.c',
|
||||
'crypto/hash/auth.c',
|
||||
@ -50,6 +50,11 @@ for var in ('HAVE_STDLIB_H', 'HAVE_UINT8_T', 'HAVE_UINT16_T',
|
||||
'HAVE_INT32_T', 'HAVE_UINT32_T', 'HAVE_UINT64_T'):
|
||||
DEFINES[var] = 1
|
||||
|
||||
# Enable AES-GCM cipher suite in libsrtp
|
||||
DEFINES['GCM'] = 1
|
||||
# Let libsrtp use NSS instead of build-in crypto
|
||||
DEFINES['NSS'] = 1
|
||||
|
||||
# XXX while arm is not a CISC architecture, the code guarded by CPU_RISC makes
|
||||
# (at least) the AES ciphers fail their self-tests on ARM, so for now we're
|
||||
# falling back to the (presumably) slower-on-this-architecture but working
|
||||
|
||||
@ -151,7 +151,7 @@ srtp_err_status_t srtp_ekt_stream_init_from_policy(
|
||||
|
||||
void aes_decrypt_with_raw_key(void *ciphertext, const void *key, int key_len)
|
||||
{
|
||||
#ifndef OPENSSL
|
||||
#ifndef GCM
|
||||
// FIXME: need to get this working through the crypto module interface
|
||||
srtp_aes_expanded_key_t expanded_key;
|
||||
|
||||
|
||||
@ -51,12 +51,13 @@
|
||||
#include "ekt.h" /* for SRTP Encrypted Key Transport */
|
||||
#include "alloc.h" /* for srtp_crypto_alloc() */
|
||||
|
||||
#ifdef OPENSSL
|
||||
#include "aes_gcm_ossl.h" /* for AES GCM mode */
|
||||
#ifdef GCM
|
||||
#include "aes_gcm.h" /* for AES GCM mode */
|
||||
#endif
|
||||
|
||||
#ifdef OPENSSL_KDF
|
||||
#include <openssl/kdf.h>
|
||||
#include "aes_icm_ossl.h" /* for AES GCM mode */
|
||||
#endif
|
||||
#include "aes_icm_ext.h"
|
||||
#endif
|
||||
|
||||
#include <limits.h>
|
||||
@ -147,51 +148,136 @@ unsigned int srtp_get_version()
|
||||
return rv;
|
||||
}
|
||||
|
||||
/* Release (maybe partially allocated) stream. */
|
||||
static void srtp_stream_free(srtp_stream_ctx_t *str)
|
||||
srtp_err_status_t srtp_stream_dealloc(srtp_stream_ctx_t *stream,
|
||||
const srtp_stream_ctx_t *stream_template)
|
||||
{
|
||||
srtp_err_status_t status;
|
||||
unsigned int i = 0;
|
||||
srtp_session_keys_t *session_keys = NULL;
|
||||
srtp_session_keys_t *template_session_keys = NULL;
|
||||
|
||||
for (i = 0; i < str->num_master_keys; i++) {
|
||||
session_keys = &str->session_keys[i];
|
||||
/*
|
||||
* we use a conservative deallocation strategy - if any deallocation
|
||||
* fails, then we report that fact without trying to deallocate
|
||||
* anything else
|
||||
*/
|
||||
if (stream->session_keys) {
|
||||
for (i = 0; i < stream->num_master_keys; i++) {
|
||||
session_keys = &stream->session_keys[i];
|
||||
|
||||
if (session_keys->rtp_xtn_hdr_cipher) {
|
||||
srtp_cipher_dealloc(session_keys->rtp_xtn_hdr_cipher);
|
||||
}
|
||||
|
||||
if (session_keys->rtcp_cipher) {
|
||||
srtp_cipher_dealloc(session_keys->rtcp_cipher);
|
||||
}
|
||||
|
||||
if (session_keys->rtcp_auth) {
|
||||
srtp_auth_dealloc(session_keys->rtcp_auth);
|
||||
}
|
||||
|
||||
if (session_keys->rtp_cipher) {
|
||||
srtp_cipher_dealloc(session_keys->rtp_cipher);
|
||||
}
|
||||
|
||||
if (session_keys->rtp_auth) {
|
||||
srtp_auth_dealloc(session_keys->rtp_auth);
|
||||
}
|
||||
|
||||
if (session_keys->mki_id) {
|
||||
srtp_crypto_free(session_keys->mki_id);
|
||||
}
|
||||
|
||||
if (session_keys->limit) {
|
||||
srtp_crypto_free(session_keys->limit);
|
||||
if (stream_template &&
|
||||
stream->num_master_keys == stream_template->num_master_keys) {
|
||||
template_session_keys = &stream_template->session_keys[i];
|
||||
} else {
|
||||
template_session_keys = NULL;
|
||||
}
|
||||
|
||||
/*
|
||||
* deallocate cipher, if it is not the same as that in template
|
||||
*/
|
||||
if (template_session_keys &&
|
||||
session_keys->rtp_cipher == template_session_keys->rtp_cipher) {
|
||||
/* do nothing */
|
||||
} else if (session_keys->rtp_cipher) {
|
||||
status = srtp_cipher_dealloc(session_keys->rtp_cipher);
|
||||
if (status)
|
||||
return status;
|
||||
}
|
||||
|
||||
/*
|
||||
* deallocate auth function, if it is not the same as that in
|
||||
* template
|
||||
*/
|
||||
if (template_session_keys &&
|
||||
session_keys->rtp_auth == template_session_keys->rtp_auth) {
|
||||
/* do nothing */
|
||||
} else if (session_keys->rtp_auth) {
|
||||
status = srtp_auth_dealloc(session_keys->rtp_auth);
|
||||
if (status)
|
||||
return status;
|
||||
}
|
||||
|
||||
if (template_session_keys &&
|
||||
session_keys->rtp_xtn_hdr_cipher ==
|
||||
template_session_keys->rtp_xtn_hdr_cipher) {
|
||||
/* do nothing */
|
||||
} else if (session_keys->rtp_xtn_hdr_cipher) {
|
||||
status = srtp_cipher_dealloc(session_keys->rtp_xtn_hdr_cipher);
|
||||
if (status)
|
||||
return status;
|
||||
}
|
||||
|
||||
/*
|
||||
* deallocate rtcp cipher, if it is not the same as that in
|
||||
* template
|
||||
*/
|
||||
if (template_session_keys &&
|
||||
session_keys->rtcp_cipher ==
|
||||
template_session_keys->rtcp_cipher) {
|
||||
/* do nothing */
|
||||
} else if (session_keys->rtcp_cipher) {
|
||||
status = srtp_cipher_dealloc(session_keys->rtcp_cipher);
|
||||
if (status)
|
||||
return status;
|
||||
}
|
||||
|
||||
/*
|
||||
* deallocate rtcp auth function, if it is not the same as that in
|
||||
* template
|
||||
*/
|
||||
if (template_session_keys &&
|
||||
session_keys->rtcp_auth == template_session_keys->rtcp_auth) {
|
||||
/* do nothing */
|
||||
} else if (session_keys->rtcp_auth) {
|
||||
status = srtp_auth_dealloc(session_keys->rtcp_auth);
|
||||
if (status)
|
||||
return status;
|
||||
}
|
||||
|
||||
/*
|
||||
* zeroize the salt value
|
||||
*/
|
||||
octet_string_set_to_zero(session_keys->salt, SRTP_AEAD_SALT_LEN);
|
||||
octet_string_set_to_zero(session_keys->c_salt, SRTP_AEAD_SALT_LEN);
|
||||
|
||||
if (session_keys->mki_id) {
|
||||
octet_string_set_to_zero(session_keys->mki_id,
|
||||
session_keys->mki_size);
|
||||
srtp_crypto_free(session_keys->mki_id);
|
||||
session_keys->mki_id = NULL;
|
||||
}
|
||||
|
||||
/*
|
||||
* deallocate key usage limit, if it is not the same as that in
|
||||
* template
|
||||
*/
|
||||
if (template_session_keys &&
|
||||
session_keys->limit == template_session_keys->limit) {
|
||||
/* do nothing */
|
||||
} else if (session_keys->limit) {
|
||||
srtp_crypto_free(session_keys->limit);
|
||||
}
|
||||
}
|
||||
srtp_crypto_free(stream->session_keys);
|
||||
}
|
||||
|
||||
srtp_crypto_free(str->session_keys);
|
||||
status = srtp_rdbx_dealloc(&stream->rtp_rdbx);
|
||||
if (status)
|
||||
return status;
|
||||
|
||||
if (str->enc_xtn_hdr) {
|
||||
srtp_crypto_free(str->enc_xtn_hdr);
|
||||
/* DAM - need to deallocate EKT here */
|
||||
|
||||
if (stream_template &&
|
||||
stream->enc_xtn_hdr == stream_template->enc_xtn_hdr) {
|
||||
/* do nothing */
|
||||
} else if (stream->enc_xtn_hdr) {
|
||||
srtp_crypto_free(stream->enc_xtn_hdr);
|
||||
}
|
||||
|
||||
srtp_crypto_free(str);
|
||||
/* deallocate srtp stream context */
|
||||
srtp_crypto_free(stream);
|
||||
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
srtp_err_status_t srtp_stream_alloc(srtp_stream_ctx_t **str_ptr,
|
||||
@ -231,7 +317,7 @@ srtp_err_status_t srtp_stream_alloc(srtp_stream_ctx_t **str_ptr,
|
||||
sizeof(srtp_session_keys_t) * str->num_master_keys);
|
||||
|
||||
if (str->session_keys == NULL) {
|
||||
srtp_stream_free(str);
|
||||
srtp_stream_dealloc(str, NULL);
|
||||
return srtp_err_status_alloc_fail;
|
||||
}
|
||||
|
||||
@ -243,7 +329,7 @@ srtp_err_status_t srtp_stream_alloc(srtp_stream_ctx_t **str_ptr,
|
||||
p->rtp.cipher_type, &session_keys->rtp_cipher,
|
||||
p->rtp.cipher_key_len, p->rtp.auth_tag_len);
|
||||
if (stat) {
|
||||
srtp_stream_free(str);
|
||||
srtp_stream_dealloc(str, NULL);
|
||||
return stat;
|
||||
}
|
||||
|
||||
@ -252,7 +338,7 @@ srtp_err_status_t srtp_stream_alloc(srtp_stream_ctx_t **str_ptr,
|
||||
p->rtp.auth_type, &session_keys->rtp_auth, p->rtp.auth_key_len,
|
||||
p->rtp.auth_tag_len);
|
||||
if (stat) {
|
||||
srtp_stream_free(str);
|
||||
srtp_stream_dealloc(str, NULL);
|
||||
return stat;
|
||||
}
|
||||
|
||||
@ -264,7 +350,7 @@ srtp_err_status_t srtp_stream_alloc(srtp_stream_ctx_t **str_ptr,
|
||||
p->rtcp.cipher_type, &session_keys->rtcp_cipher,
|
||||
p->rtcp.cipher_key_len, p->rtcp.auth_tag_len);
|
||||
if (stat) {
|
||||
srtp_stream_free(str);
|
||||
srtp_stream_dealloc(str, NULL);
|
||||
return stat;
|
||||
}
|
||||
|
||||
@ -273,7 +359,7 @@ srtp_err_status_t srtp_stream_alloc(srtp_stream_ctx_t **str_ptr,
|
||||
p->rtcp.auth_type, &session_keys->rtcp_auth, p->rtcp.auth_key_len,
|
||||
p->rtcp.auth_tag_len);
|
||||
if (stat) {
|
||||
srtp_stream_free(str);
|
||||
srtp_stream_dealloc(str, NULL);
|
||||
return stat;
|
||||
}
|
||||
|
||||
@ -283,7 +369,7 @@ srtp_err_status_t srtp_stream_alloc(srtp_stream_ctx_t **str_ptr,
|
||||
session_keys->limit = (srtp_key_limit_ctx_t *)srtp_crypto_alloc(
|
||||
sizeof(srtp_key_limit_ctx_t));
|
||||
if (session_keys->limit == NULL) {
|
||||
srtp_stream_free(str);
|
||||
srtp_stream_dealloc(str, NULL);
|
||||
return srtp_err_status_alloc_fail;
|
||||
}
|
||||
}
|
||||
@ -291,7 +377,7 @@ srtp_err_status_t srtp_stream_alloc(srtp_stream_ctx_t **str_ptr,
|
||||
/* allocate ekt data associated with stream */
|
||||
stat = srtp_ekt_alloc(&str->ekt, p->ekt);
|
||||
if (stat) {
|
||||
srtp_stream_free(str);
|
||||
srtp_stream_dealloc(str, NULL);
|
||||
return stat;
|
||||
}
|
||||
|
||||
@ -302,7 +388,7 @@ srtp_err_status_t srtp_stream_alloc(srtp_stream_ctx_t **str_ptr,
|
||||
str->enc_xtn_hdr = (int *)srtp_crypto_alloc(p->enc_xtn_hdr_count *
|
||||
sizeof(p->enc_xtn_hdr[0]));
|
||||
if (!str->enc_xtn_hdr) {
|
||||
srtp_stream_free(str);
|
||||
srtp_stream_dealloc(str, NULL);
|
||||
return srtp_err_status_alloc_fail;
|
||||
}
|
||||
memcpy(str->enc_xtn_hdr, p->enc_xtn_hdr,
|
||||
@ -336,7 +422,7 @@ srtp_err_status_t srtp_stream_alloc(srtp_stream_ctx_t **str_ptr,
|
||||
enc_xtn_hdr_cipher_type, &session_keys->rtp_xtn_hdr_cipher,
|
||||
enc_xtn_hdr_cipher_key_len, 0);
|
||||
if (stat) {
|
||||
srtp_stream_free(str);
|
||||
srtp_stream_dealloc(str, NULL);
|
||||
return stat;
|
||||
}
|
||||
}
|
||||
@ -353,138 +439,6 @@ srtp_err_status_t srtp_stream_alloc(srtp_stream_ctx_t **str_ptr,
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
srtp_err_status_t srtp_stream_dealloc(srtp_stream_ctx_t *stream,
|
||||
srtp_stream_ctx_t *stream_template)
|
||||
{
|
||||
srtp_err_status_t status;
|
||||
unsigned int i = 0;
|
||||
srtp_session_keys_t *session_keys = NULL;
|
||||
srtp_session_keys_t *template_session_keys = NULL;
|
||||
|
||||
/*
|
||||
* we use a conservative deallocation strategy - if any deallocation
|
||||
* fails, then we report that fact without trying to deallocate
|
||||
* anything else
|
||||
*/
|
||||
for (i = 0; i < stream->num_master_keys; i++) {
|
||||
session_keys = &stream->session_keys[i];
|
||||
|
||||
if (stream_template) {
|
||||
template_session_keys = &stream_template->session_keys[i];
|
||||
} else {
|
||||
template_session_keys = NULL;
|
||||
}
|
||||
|
||||
/*
|
||||
* deallocate cipher, if it is not the same as that in template
|
||||
*/
|
||||
if (template_session_keys &&
|
||||
session_keys->rtp_cipher == template_session_keys->rtp_cipher) {
|
||||
/* do nothing */
|
||||
} else {
|
||||
status = srtp_cipher_dealloc(session_keys->rtp_cipher);
|
||||
if (status)
|
||||
return status;
|
||||
}
|
||||
|
||||
/*
|
||||
* deallocate auth function, if it is not the same as that in template
|
||||
*/
|
||||
if (template_session_keys &&
|
||||
session_keys->rtp_auth == template_session_keys->rtp_auth) {
|
||||
/* do nothing */
|
||||
} else {
|
||||
status = srtp_auth_dealloc(session_keys->rtp_auth);
|
||||
if (status)
|
||||
return status;
|
||||
}
|
||||
|
||||
if (template_session_keys &&
|
||||
session_keys->rtp_xtn_hdr_cipher ==
|
||||
template_session_keys->rtp_xtn_hdr_cipher) {
|
||||
/* do nothing */
|
||||
} else if (session_keys->rtp_xtn_hdr_cipher) {
|
||||
status = srtp_cipher_dealloc(session_keys->rtp_xtn_hdr_cipher);
|
||||
if (status)
|
||||
return status;
|
||||
}
|
||||
|
||||
/*
|
||||
* deallocate rtcp cipher, if it is not the same as that in
|
||||
* template
|
||||
*/
|
||||
if (template_session_keys &&
|
||||
session_keys->rtcp_cipher == template_session_keys->rtcp_cipher) {
|
||||
/* do nothing */
|
||||
} else {
|
||||
status = srtp_cipher_dealloc(session_keys->rtcp_cipher);
|
||||
if (status)
|
||||
return status;
|
||||
}
|
||||
|
||||
/*
|
||||
* deallocate rtcp auth function, if it is not the same as that in
|
||||
* template
|
||||
*/
|
||||
if (template_session_keys &&
|
||||
session_keys->rtcp_auth == template_session_keys->rtcp_auth) {
|
||||
/* do nothing */
|
||||
} else {
|
||||
status = srtp_auth_dealloc(session_keys->rtcp_auth);
|
||||
if (status)
|
||||
return status;
|
||||
}
|
||||
|
||||
/*
|
||||
* zeroize the salt value
|
||||
*/
|
||||
octet_string_set_to_zero(session_keys->salt, SRTP_AEAD_SALT_LEN);
|
||||
octet_string_set_to_zero(session_keys->c_salt, SRTP_AEAD_SALT_LEN);
|
||||
|
||||
if (session_keys->mki_id) {
|
||||
octet_string_set_to_zero(session_keys->mki_id,
|
||||
session_keys->mki_size);
|
||||
srtp_crypto_free(session_keys->mki_id);
|
||||
session_keys->mki_id = NULL;
|
||||
}
|
||||
|
||||
/*
|
||||
* deallocate key usage limit, if it is not the same as that in template
|
||||
*/
|
||||
if (template_session_keys &&
|
||||
session_keys->limit == template_session_keys->limit) {
|
||||
/* do nothing */
|
||||
} else {
|
||||
srtp_crypto_free(session_keys->limit);
|
||||
}
|
||||
}
|
||||
|
||||
if (stream_template &&
|
||||
stream->session_keys == stream_template->session_keys) {
|
||||
/* do nothing */
|
||||
} else {
|
||||
srtp_crypto_free(stream->session_keys);
|
||||
}
|
||||
|
||||
status = srtp_rdbx_dealloc(&stream->rtp_rdbx);
|
||||
if (status)
|
||||
return status;
|
||||
|
||||
/* DAM - need to deallocate EKT here */
|
||||
|
||||
if (stream_template &&
|
||||
stream->enc_xtn_hdr == stream_template->enc_xtn_hdr) {
|
||||
/* do nothing */
|
||||
} else if (stream->enc_xtn_hdr) {
|
||||
srtp_crypto_free(stream->enc_xtn_hdr);
|
||||
}
|
||||
|
||||
/* deallocate srtp stream context */
|
||||
srtp_crypto_free(stream);
|
||||
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
/*
|
||||
* srtp_stream_clone(stream_template, new) allocates a new stream and
|
||||
* initializes it using the cipher and auth of the stream_template
|
||||
@ -516,7 +470,7 @@ srtp_err_status_t srtp_stream_clone(const srtp_stream_ctx_t *stream_template,
|
||||
sizeof(srtp_session_keys_t) * str->num_master_keys);
|
||||
|
||||
if (str->session_keys == NULL) {
|
||||
srtp_stream_free(*str_ptr);
|
||||
srtp_stream_dealloc(*str_ptr, stream_template);
|
||||
*str_ptr = NULL;
|
||||
return srtp_err_status_alloc_fail;
|
||||
}
|
||||
@ -541,7 +495,7 @@ srtp_err_status_t srtp_stream_clone(const srtp_stream_ctx_t *stream_template,
|
||||
srtp_crypto_alloc(template_session_keys->mki_size);
|
||||
|
||||
if (session_keys->mki_id == NULL) {
|
||||
srtp_stream_free(*str_ptr);
|
||||
srtp_stream_dealloc(*str_ptr, stream_template);
|
||||
*str_ptr = NULL;
|
||||
return srtp_err_status_init_fail;
|
||||
}
|
||||
@ -558,7 +512,7 @@ srtp_err_status_t srtp_stream_clone(const srtp_stream_ctx_t *stream_template,
|
||||
status = srtp_key_limit_clone(template_session_keys->limit,
|
||||
&session_keys->limit);
|
||||
if (status) {
|
||||
srtp_stream_free(*str_ptr);
|
||||
srtp_stream_dealloc(*str_ptr, stream_template);
|
||||
*str_ptr = NULL;
|
||||
return status;
|
||||
}
|
||||
@ -568,7 +522,7 @@ srtp_err_status_t srtp_stream_clone(const srtp_stream_ctx_t *stream_template,
|
||||
status = srtp_rdbx_init(
|
||||
&str->rtp_rdbx, srtp_rdbx_get_window_size(&stream_template->rtp_rdbx));
|
||||
if (status) {
|
||||
srtp_stream_free(*str_ptr);
|
||||
srtp_stream_dealloc(*str_ptr, stream_template);
|
||||
*str_ptr = NULL;
|
||||
return status;
|
||||
}
|
||||
@ -847,9 +801,10 @@ srtp_session_keys_t *srtp_get_session_keys_with_mki_index(
|
||||
unsigned int mki_index)
|
||||
{
|
||||
if (use_mki) {
|
||||
if (mki_index < stream->num_master_keys) {
|
||||
return &stream->session_keys[mki_index];
|
||||
if (mki_index >= stream->num_master_keys) {
|
||||
return NULL;
|
||||
}
|
||||
return &stream->session_keys[mki_index];
|
||||
}
|
||||
|
||||
return &stream->session_keys[0];
|
||||
@ -1604,12 +1559,12 @@ srtp_session_keys_t *srtp_get_session_keys(srtp_stream_ctx_t *stream,
|
||||
base_mki_start_location -= tag_len;
|
||||
|
||||
for (i = 0; i < stream->num_master_keys; i++) {
|
||||
if (stream->session_keys[i].mki_size != 0) {
|
||||
if (stream->session_keys[i].mki_size != 0 &&
|
||||
stream->session_keys[i].mki_size <= base_mki_start_location) {
|
||||
*mki_size = stream->session_keys[i].mki_size;
|
||||
mki_start_location = base_mki_start_location - *mki_size;
|
||||
|
||||
if (mki_start_location >= *mki_size &&
|
||||
memcmp(hdr + mki_start_location, stream->session_keys[i].mki_id,
|
||||
if (memcmp(hdr + mki_start_location, stream->session_keys[i].mki_id,
|
||||
*mki_size) == 0) {
|
||||
return &stream->session_keys[i];
|
||||
}
|
||||
@ -2170,6 +2125,9 @@ srtp_err_status_t srtp_protect_mki(srtp_ctx_t *ctx,
|
||||
session_keys =
|
||||
srtp_get_session_keys_with_mki_index(stream, use_mki, mki_index);
|
||||
|
||||
if (session_keys == NULL)
|
||||
return srtp_err_status_bad_mki;
|
||||
|
||||
/*
|
||||
* Check if this is an AEAD stream (GCM mode). If so, then dispatch
|
||||
* the request to our AEAD handler.
|
||||
@ -2889,7 +2847,7 @@ srtp_err_status_t srtp_add_stream(srtp_t session, const srtp_policy_t *policy)
|
||||
/* initialize stream */
|
||||
status = srtp_stream_init(tmp, policy);
|
||||
if (status) {
|
||||
srtp_stream_free(tmp);
|
||||
srtp_stream_dealloc(tmp, NULL);
|
||||
return status;
|
||||
}
|
||||
|
||||
@ -2904,7 +2862,7 @@ srtp_err_status_t srtp_add_stream(srtp_t session, const srtp_policy_t *policy)
|
||||
switch (policy->ssrc.type) {
|
||||
case (ssrc_any_outbound):
|
||||
if (session->stream_template) {
|
||||
srtp_stream_free(tmp);
|
||||
srtp_stream_dealloc(tmp, NULL);
|
||||
return srtp_err_status_bad_param;
|
||||
}
|
||||
session->stream_template = tmp;
|
||||
@ -2912,7 +2870,7 @@ srtp_err_status_t srtp_add_stream(srtp_t session, const srtp_policy_t *policy)
|
||||
break;
|
||||
case (ssrc_any_inbound):
|
||||
if (session->stream_template) {
|
||||
srtp_stream_free(tmp);
|
||||
srtp_stream_dealloc(tmp, NULL);
|
||||
return srtp_err_status_bad_param;
|
||||
}
|
||||
session->stream_template = tmp;
|
||||
@ -2924,7 +2882,7 @@ srtp_err_status_t srtp_add_stream(srtp_t session, const srtp_policy_t *policy)
|
||||
break;
|
||||
case (ssrc_undefined):
|
||||
default:
|
||||
srtp_stream_free(tmp);
|
||||
srtp_stream_dealloc(tmp, NULL);
|
||||
return srtp_err_status_bad_param;
|
||||
}
|
||||
|
||||
@ -3329,7 +3287,7 @@ void srtp_crypto_policy_set_aes_cm_256_null_auth(srtp_crypto_policy_t *p)
|
||||
p->sec_serv = sec_serv_conf;
|
||||
}
|
||||
|
||||
#ifdef OPENSSL
|
||||
#ifdef GCM
|
||||
void srtp_crypto_policy_set_aes_cm_192_hmac_sha1_80(srtp_crypto_policy_t *p)
|
||||
{
|
||||
/*
|
||||
@ -3540,7 +3498,8 @@ static srtp_err_status_t srtp_protect_rtcp_aead(
|
||||
{
|
||||
srtcp_hdr_t *hdr = (srtcp_hdr_t *)rtcp_hdr;
|
||||
uint32_t *enc_start; /* pointer to start of encrypted portion */
|
||||
uint32_t *trailer; /* pointer to start of trailer */
|
||||
uint32_t *trailer_p; /* pointer to start of trailer */
|
||||
uint32_t trailer; /* trailer value */
|
||||
unsigned int enc_octet_len = 0; /* number of octets in encrypted portion */
|
||||
uint8_t *auth_tag = NULL; /* location of auth_tag within packet */
|
||||
srtp_err_status_t status;
|
||||
@ -3563,18 +3522,15 @@ static srtp_err_status_t srtp_protect_rtcp_aead(
|
||||
/* NOTE: hdr->length is not usable - it refers to only the first
|
||||
* RTCP report in the compound packet!
|
||||
*/
|
||||
/* NOTE: trailer is 32-bit aligned because RTCP 'packets' are always
|
||||
* multiples of 32-bits (RFC 3550 6.1)
|
||||
*/
|
||||
trailer = (uint32_t *)((char *)enc_start + enc_octet_len + tag_len);
|
||||
trailer_p = (uint32_t *)((char *)enc_start + enc_octet_len + tag_len);
|
||||
|
||||
if (stream->rtcp_services & sec_serv_conf) {
|
||||
*trailer = htonl(SRTCP_E_BIT); /* set encrypt bit */
|
||||
trailer = htonl(SRTCP_E_BIT); /* set encrypt bit */
|
||||
} else {
|
||||
enc_start = NULL;
|
||||
enc_octet_len = 0;
|
||||
/* 0 is network-order independant */
|
||||
*trailer = 0x00000000; /* set encrypt bit */
|
||||
trailer = 0x00000000; /* set encrypt bit */
|
||||
}
|
||||
|
||||
mki_size = srtp_inject_mki((uint8_t *)hdr + *pkt_octet_len + tag_len +
|
||||
@ -3598,9 +3554,11 @@ static srtp_err_status_t srtp_protect_rtcp_aead(
|
||||
return status;
|
||||
}
|
||||
seq_num = srtp_rdb_get_value(&stream->rtcp_rdb);
|
||||
*trailer |= htonl(seq_num);
|
||||
trailer |= htonl(seq_num);
|
||||
debug_print(mod_srtp, "srtcp index: %x", seq_num);
|
||||
|
||||
memcpy(trailer_p, &trailer, sizeof(trailer));
|
||||
|
||||
/*
|
||||
* Calculate and set the IV
|
||||
*/
|
||||
@ -3642,7 +3600,7 @@ static srtp_err_status_t srtp_protect_rtcp_aead(
|
||||
/*
|
||||
* Process the sequence# as AAD
|
||||
*/
|
||||
tseq = *trailer;
|
||||
tseq = trailer;
|
||||
status = srtp_cipher_set_aad(session_keys->rtcp_cipher, (uint8_t *)&tseq,
|
||||
sizeof(srtcp_trailer_t));
|
||||
if (status) {
|
||||
@ -3711,7 +3669,8 @@ static srtp_err_status_t srtp_unprotect_rtcp_aead(
|
||||
{
|
||||
srtcp_hdr_t *hdr = (srtcp_hdr_t *)srtcp_hdr;
|
||||
uint32_t *enc_start; /* pointer to start of encrypted portion */
|
||||
uint32_t *trailer; /* pointer to start of trailer */
|
||||
uint32_t *trailer_p; /* pointer to start of trailer */
|
||||
uint32_t trailer; /* trailer value */
|
||||
unsigned int enc_octet_len = 0; /* number of octets in encrypted portion */
|
||||
uint8_t *auth_tag = NULL; /* location of auth_tag within packet */
|
||||
srtp_err_status_t status;
|
||||
@ -3737,12 +3696,10 @@ static srtp_err_status_t srtp_unprotect_rtcp_aead(
|
||||
*/
|
||||
/* This should point trailer to the word past the end of the normal data. */
|
||||
/* This would need to be modified for optional mikey data */
|
||||
/*
|
||||
* NOTE: trailer is 32-bit aligned because RTCP 'packets' are always
|
||||
* multiples of 32-bits (RFC 3550 6.1)
|
||||
*/
|
||||
trailer = (uint32_t *)((char *)hdr + *pkt_octet_len -
|
||||
sizeof(srtcp_trailer_t) - mki_size);
|
||||
trailer_p = (uint32_t *)((char *)hdr + *pkt_octet_len -
|
||||
sizeof(srtcp_trailer_t) - mki_size);
|
||||
memcpy(&trailer, trailer_p, sizeof(trailer));
|
||||
|
||||
/*
|
||||
* We pass the tag down to the cipher when doing GCM mode
|
||||
*/
|
||||
@ -3751,7 +3708,7 @@ static srtp_err_status_t srtp_unprotect_rtcp_aead(
|
||||
auth_tag = (uint8_t *)hdr + *pkt_octet_len - tag_len - mki_size -
|
||||
sizeof(srtcp_trailer_t);
|
||||
|
||||
if (*((unsigned char *)trailer) & SRTCP_E_BYTE_BIT) {
|
||||
if (*((unsigned char *)trailer_p) & SRTCP_E_BYTE_BIT) {
|
||||
enc_start = (uint32_t *)hdr + uint32s_in_rtcp_header;
|
||||
} else {
|
||||
enc_octet_len = 0;
|
||||
@ -3762,7 +3719,7 @@ static srtp_err_status_t srtp_unprotect_rtcp_aead(
|
||||
* check the sequence number for replays
|
||||
*/
|
||||
/* this is easier than dealing with bitfield access */
|
||||
seq_num = ntohl(*trailer) & SRTCP_INDEX_MASK;
|
||||
seq_num = ntohl(trailer) & SRTCP_INDEX_MASK;
|
||||
debug_print(mod_srtp, "srtcp index: %x", seq_num);
|
||||
status = srtp_rdb_check(&stream->rtcp_rdb, seq_num);
|
||||
if (status) {
|
||||
@ -3812,7 +3769,7 @@ static srtp_err_status_t srtp_unprotect_rtcp_aead(
|
||||
/*
|
||||
* Process the sequence# as AAD
|
||||
*/
|
||||
tseq = *trailer;
|
||||
tseq = trailer;
|
||||
status = srtp_cipher_set_aad(session_keys->rtcp_cipher, (uint8_t *)&tseq,
|
||||
sizeof(srtcp_trailer_t));
|
||||
if (status) {
|
||||
@ -3910,7 +3867,8 @@ srtp_err_status_t srtp_protect_rtcp_mki(srtp_t ctx,
|
||||
srtcp_hdr_t *hdr = (srtcp_hdr_t *)rtcp_hdr;
|
||||
uint32_t *enc_start; /* pointer to start of encrypted portion */
|
||||
uint32_t *auth_start; /* pointer to start of auth. portion */
|
||||
uint32_t *trailer; /* pointer to start of trailer */
|
||||
uint32_t *trailer_p; /* pointer to start of trailer */
|
||||
uint32_t trailer; /* trailer value */
|
||||
unsigned int enc_octet_len = 0; /* number of octets in encrypted portion */
|
||||
uint8_t *auth_tag = NULL; /* location of auth_tag within packet */
|
||||
srtp_err_status_t status;
|
||||
@ -3974,6 +3932,9 @@ srtp_err_status_t srtp_protect_rtcp_mki(srtp_t ctx,
|
||||
session_keys =
|
||||
srtp_get_session_keys_with_mki_index(stream, use_mki, mki_index);
|
||||
|
||||
if (session_keys == NULL)
|
||||
return srtp_err_status_bad_mki;
|
||||
|
||||
/*
|
||||
* Check if this is an AEAD stream (GCM mode). If so, then dispatch
|
||||
* the request to our AEAD handler.
|
||||
@ -4000,19 +3961,15 @@ srtp_err_status_t srtp_protect_rtcp_mki(srtp_t ctx,
|
||||
* NOTE: hdr->length is not usable - it refers to only the first RTCP report
|
||||
* in the compound packet!
|
||||
*/
|
||||
/*
|
||||
* NOTE: trailer is 32-bit aligned because RTCP 'packets' are always
|
||||
* multiples of 32-bits (RFC 3550 6.1)
|
||||
*/
|
||||
trailer = (uint32_t *)((char *)enc_start + enc_octet_len);
|
||||
trailer_p = (uint32_t *)((char *)enc_start + enc_octet_len);
|
||||
|
||||
if (stream->rtcp_services & sec_serv_conf) {
|
||||
*trailer = htonl(SRTCP_E_BIT); /* set encrypt bit */
|
||||
trailer = htonl(SRTCP_E_BIT); /* set encrypt bit */
|
||||
} else {
|
||||
enc_start = NULL;
|
||||
enc_octet_len = 0;
|
||||
/* 0 is network-order independant */
|
||||
*trailer = 0x00000000; /* set encrypt bit */
|
||||
trailer = 0x00000000; /* set encrypt bit */
|
||||
}
|
||||
|
||||
mki_size = srtp_inject_mki((uint8_t *)hdr + *pkt_octet_len +
|
||||
@ -4040,9 +3997,11 @@ srtp_err_status_t srtp_protect_rtcp_mki(srtp_t ctx,
|
||||
if (status)
|
||||
return status;
|
||||
seq_num = srtp_rdb_get_value(&stream->rtcp_rdb);
|
||||
*trailer |= htonl(seq_num);
|
||||
trailer |= htonl(seq_num);
|
||||
debug_print(mod_srtp, "srtcp index: %x", seq_num);
|
||||
|
||||
memcpy(trailer_p, &trailer, sizeof(trailer));
|
||||
|
||||
/*
|
||||
* if we're using rindael counter mode, set nonce and seq
|
||||
*/
|
||||
@ -4138,7 +4097,8 @@ srtp_err_status_t srtp_unprotect_rtcp_mki(srtp_t ctx,
|
||||
srtcp_hdr_t *hdr = (srtcp_hdr_t *)srtcp_hdr;
|
||||
uint32_t *enc_start; /* pointer to start of encrypted portion */
|
||||
uint32_t *auth_start; /* pointer to start of auth. portion */
|
||||
uint32_t *trailer; /* pointer to start of trailer */
|
||||
uint32_t *trailer_p; /* pointer to start of trailer */
|
||||
uint32_t trailer; /* trailer value */
|
||||
unsigned int enc_octet_len = 0; /* number of octets in encrypted portion */
|
||||
uint8_t *auth_tag = NULL; /* location of auth_tag within packet */
|
||||
uint8_t tmp_tag[SRTP_MAX_TAG_LEN];
|
||||
@ -4256,14 +4216,12 @@ srtp_err_status_t srtp_unprotect_rtcp_mki(srtp_t ctx,
|
||||
*/
|
||||
/* This should point trailer to the word past the end of the normal data. */
|
||||
/* This would need to be modified for optional mikey data */
|
||||
/*
|
||||
* NOTE: trailer is 32-bit aligned because RTCP 'packets' are always
|
||||
* multiples of 32-bits (RFC 3550 6.1)
|
||||
*/
|
||||
trailer = (uint32_t *)((char *)hdr + *pkt_octet_len -
|
||||
(tag_len + mki_size + sizeof(srtcp_trailer_t)));
|
||||
trailer_p = (uint32_t *)((char *)hdr + *pkt_octet_len -
|
||||
(tag_len + mki_size + sizeof(srtcp_trailer_t)));
|
||||
memcpy(&trailer, trailer_p, sizeof(trailer));
|
||||
|
||||
e_bit_in_packet =
|
||||
(*((unsigned char *)trailer) & SRTCP_E_BYTE_BIT) == SRTCP_E_BYTE_BIT;
|
||||
(*((unsigned char *)trailer_p) & SRTCP_E_BYTE_BIT) == SRTCP_E_BYTE_BIT;
|
||||
if (e_bit_in_packet != sec_serv_confidentiality) {
|
||||
return srtp_err_status_cant_check;
|
||||
}
|
||||
@ -4307,7 +4265,7 @@ srtp_err_status_t srtp_unprotect_rtcp_mki(srtp_t ctx,
|
||||
* check the sequence number for replays
|
||||
*/
|
||||
/* this is easier than dealing with bitfield access */
|
||||
seq_num = ntohl(*trailer) & SRTCP_INDEX_MASK;
|
||||
seq_num = ntohl(trailer) & SRTCP_INDEX_MASK;
|
||||
debug_print(mod_srtp, "srtcp index: %x", seq_num);
|
||||
status = srtp_rdb_check(&stream->rtcp_rdb, seq_num);
|
||||
if (status)
|
||||
@ -4478,7 +4436,7 @@ srtp_err_status_t srtp_crypto_policy_set_from_profile_for_rtp(
|
||||
case srtp_profile_null_sha1_80:
|
||||
srtp_crypto_policy_set_null_cipher_hmac_sha1_80(policy);
|
||||
break;
|
||||
#if defined(OPENSSL)
|
||||
#ifdef GCM
|
||||
case srtp_profile_aead_aes_128_gcm:
|
||||
srtp_crypto_policy_set_aes_gcm_128_16_auth(policy);
|
||||
break;
|
||||
@ -4512,7 +4470,7 @@ srtp_err_status_t srtp_crypto_policy_set_from_profile_for_rtcp(
|
||||
case srtp_profile_null_sha1_80:
|
||||
srtp_crypto_policy_set_null_cipher_hmac_sha1_80(policy);
|
||||
break;
|
||||
#if defined(OPENSSL)
|
||||
#ifdef GCM
|
||||
case srtp_profile_aead_aes_128_gcm:
|
||||
srtp_crypto_policy_set_aes_gcm_128_16_auth(policy);
|
||||
break;
|
||||
@ -4587,42 +4545,85 @@ unsigned int srtp_profile_get_master_salt_length(srtp_profile_t profile)
|
||||
}
|
||||
}
|
||||
|
||||
srtp_err_status_t stream_get_protect_trailer_length(srtp_stream_ctx_t *stream,
|
||||
uint32_t is_rtp,
|
||||
uint32_t use_mki,
|
||||
uint32_t mki_index,
|
||||
uint32_t *length)
|
||||
{
|
||||
*length = 0;
|
||||
|
||||
srtp_session_keys_t *session_key;
|
||||
|
||||
if (use_mki) {
|
||||
if (mki_index >= stream->num_master_keys) {
|
||||
return srtp_err_status_bad_mki;
|
||||
}
|
||||
session_key = &stream->session_keys[mki_index];
|
||||
|
||||
*length += session_key->mki_size;
|
||||
|
||||
} else {
|
||||
session_key = &stream->session_keys[0];
|
||||
}
|
||||
if (is_rtp) {
|
||||
*length += srtp_auth_get_tag_length(session_key->rtp_auth);
|
||||
} else {
|
||||
*length += srtp_auth_get_tag_length(session_key->rtcp_auth);
|
||||
*length += sizeof(srtcp_trailer_t);
|
||||
}
|
||||
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
srtp_err_status_t get_protect_trailer_length(srtp_t session,
|
||||
uint32_t is_rtp,
|
||||
uint32_t use_mki,
|
||||
uint32_t mki_index,
|
||||
uint32_t *length)
|
||||
{
|
||||
srtp_stream_ctx_t *stream;
|
||||
|
||||
if (session == NULL) {
|
||||
return srtp_err_status_bad_param;
|
||||
}
|
||||
|
||||
if (session->stream_template == NULL && session->stream_list == NULL) {
|
||||
return srtp_err_status_bad_param;
|
||||
}
|
||||
|
||||
*length = 0;
|
||||
|
||||
stream = session->stream_template;
|
||||
|
||||
if (stream != NULL) {
|
||||
stream_get_protect_trailer_length(stream, is_rtp, use_mki, mki_index,
|
||||
length);
|
||||
}
|
||||
|
||||
stream = session->stream_list;
|
||||
|
||||
while (stream != NULL) {
|
||||
uint32_t temp_length;
|
||||
if (stream_get_protect_trailer_length(stream, is_rtp, use_mki,
|
||||
mki_index, &temp_length) ==
|
||||
srtp_err_status_ok) {
|
||||
if (temp_length > *length) {
|
||||
*length = temp_length;
|
||||
}
|
||||
}
|
||||
stream = stream->next;
|
||||
}
|
||||
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
srtp_err_status_t srtp_get_protect_trailer_length(srtp_t session,
|
||||
uint32_t use_mki,
|
||||
uint32_t mki_index,
|
||||
uint32_t *length)
|
||||
{
|
||||
srtp_stream_ctx_t *stream;
|
||||
|
||||
if (session == NULL)
|
||||
return srtp_err_status_bad_param;
|
||||
|
||||
*length = 0;
|
||||
|
||||
/* Try obtaining stream from stream_list */
|
||||
stream = session->stream_list;
|
||||
|
||||
if (stream == NULL) {
|
||||
/* Try obtaining the template stream */
|
||||
stream = session->stream_template;
|
||||
}
|
||||
|
||||
if (stream == NULL) {
|
||||
return srtp_err_status_bad_param;
|
||||
}
|
||||
|
||||
if (use_mki) {
|
||||
if (mki_index > stream->num_master_keys)
|
||||
return srtp_err_status_bad_mki;
|
||||
|
||||
*length += stream->session_keys[mki_index].mki_size;
|
||||
*length +=
|
||||
srtp_auth_get_tag_length(stream->session_keys[mki_index].rtp_auth);
|
||||
} else {
|
||||
*length += srtp_auth_get_tag_length(stream->session_keys[0].rtp_auth);
|
||||
}
|
||||
|
||||
return srtp_err_status_ok;
|
||||
return get_protect_trailer_length(session, 1, use_mki, mki_index, length);
|
||||
}
|
||||
|
||||
srtp_err_status_t srtp_get_protect_rtcp_trailer_length(srtp_t session,
|
||||
@ -4630,39 +4631,7 @@ srtp_err_status_t srtp_get_protect_rtcp_trailer_length(srtp_t session,
|
||||
uint32_t mki_index,
|
||||
uint32_t *length)
|
||||
{
|
||||
srtp_stream_ctx_t *stream;
|
||||
|
||||
if (session == NULL)
|
||||
return srtp_err_status_bad_param;
|
||||
|
||||
*length = 0;
|
||||
|
||||
/* Try obtaining stream from stream_list */
|
||||
stream = session->stream_list;
|
||||
|
||||
if (stream == NULL) {
|
||||
/* Try obtaining the template stream */
|
||||
stream = session->stream_template;
|
||||
}
|
||||
|
||||
if (stream == NULL) {
|
||||
return srtp_err_status_bad_param;
|
||||
}
|
||||
|
||||
if (use_mki) {
|
||||
if (mki_index > stream->num_master_keys)
|
||||
return srtp_err_status_bad_mki;
|
||||
|
||||
*length += stream->session_keys[mki_index].mki_size;
|
||||
*length +=
|
||||
srtp_auth_get_tag_length(stream->session_keys[mki_index].rtcp_auth);
|
||||
} else {
|
||||
*length += srtp_auth_get_tag_length(stream->session_keys[0].rtcp_auth);
|
||||
}
|
||||
|
||||
*length += sizeof(srtcp_trailer_t);
|
||||
|
||||
return srtp_err_status_ok;
|
||||
return get_protect_trailer_length(session, 0, use_mki, mki_index, length);
|
||||
}
|
||||
|
||||
/*
|
||||
|
||||
@ -58,8 +58,9 @@ static int getopt_check_character(char c, const char *string)
|
||||
|
||||
while (*string != 0) {
|
||||
if (max_string_len == 0) {
|
||||
return '?';
|
||||
return GETOPT_NOT_FOUND;
|
||||
}
|
||||
max_string_len--;
|
||||
if (*string++ == c) {
|
||||
if (*string == ':') {
|
||||
return GETOPT_FOUND_WITH_ARGUMENT;
|
||||
|
||||
@ -348,6 +348,9 @@ double rdbx_check_adds_per_second(int num_trials, unsigned long ws)
|
||||
++failures;
|
||||
}
|
||||
timer = clock() - timer;
|
||||
if (timer < 1) {
|
||||
timer = 1;
|
||||
}
|
||||
|
||||
printf("number of failures: %d \n", failures);
|
||||
|
||||
|
||||
@ -97,7 +97,7 @@ srtp_err_status_t roc_test(int num_trials)
|
||||
|
||||
printf("\n\ttesting sequential insertion...");
|
||||
for (i = 0; i < 2048; i++) {
|
||||
delta = srtp_index_guess(&local, &est, (uint16_t)ref);
|
||||
srtp_index_guess(&local, &est, (uint16_t)ref);
|
||||
#if ROC_VERBOSE
|
||||
printf("%lld, %lld, %d\n", ref, est, i);
|
||||
#endif
|
||||
|
||||
@ -317,6 +317,7 @@ int main(int argc, char *argv[])
|
||||
exit(1);
|
||||
}
|
||||
|
||||
memset(&name, 0, sizeof(struct sockaddr_in));
|
||||
name.sin_addr = rcvr_addr;
|
||||
name.sin_family = PF_INET;
|
||||
name.sin_port = htons(port);
|
||||
@ -364,7 +365,7 @@ int main(int argc, char *argv[])
|
||||
switch (sec_servs) {
|
||||
case sec_serv_conf_and_auth:
|
||||
if (gcm_on) {
|
||||
#ifdef OPENSSL
|
||||
#ifdef GCM
|
||||
switch (key_size) {
|
||||
case 128:
|
||||
srtp_crypto_policy_set_aes_gcm_128_8_auth(&policy.rtp);
|
||||
@ -377,7 +378,7 @@ int main(int argc, char *argv[])
|
||||
}
|
||||
#else
|
||||
printf("error: GCM mode only supported when using the OpenSSL "
|
||||
"crypto engine.\n");
|
||||
"or NSS crypto engine.\n");
|
||||
return 0;
|
||||
#endif
|
||||
} else {
|
||||
@ -413,7 +414,7 @@ int main(int argc, char *argv[])
|
||||
break;
|
||||
case sec_serv_auth:
|
||||
if (gcm_on) {
|
||||
#ifdef OPENSSL
|
||||
#ifdef GCM
|
||||
switch (key_size) {
|
||||
case 128:
|
||||
srtp_crypto_policy_set_aes_gcm_128_8_only_auth(&policy.rtp);
|
||||
|
||||
@ -41,8 +41,13 @@ case $(uname -s) in
|
||||
*CYGWIN*|*MINGW*)
|
||||
EXE=".exe"
|
||||
;;
|
||||
*)
|
||||
*Linux*)
|
||||
EXE=""
|
||||
export LD_LIBRARY_PATH=$CRYPTO_LIBDIR
|
||||
;;
|
||||
*Darwin*)
|
||||
EXE=""
|
||||
export DYLD_LIBRARY_PATH=$CRYPTO_LIBDIR
|
||||
;;
|
||||
esac
|
||||
|
||||
|
||||
@ -41,8 +41,13 @@ case $(uname -s) in
|
||||
*CYGWIN*|*MINGW*)
|
||||
EXE=".exe"
|
||||
;;
|
||||
*)
|
||||
*Linux*)
|
||||
EXE=""
|
||||
export LD_LIBRARY_PATH=$CRYPTO_LIBDIR
|
||||
;;
|
||||
*Darwin*)
|
||||
EXE=""
|
||||
export DYLD_LIBRARY_PATH=$CRYPTO_LIBDIR
|
||||
;;
|
||||
esac
|
||||
|
||||
|
||||
@ -61,13 +61,13 @@
|
||||
|
||||
srtp_err_status_t srtp_validate(void);
|
||||
|
||||
#ifdef OPENSSL
|
||||
#ifdef GCM
|
||||
srtp_err_status_t srtp_validate_gcm(void);
|
||||
#endif
|
||||
|
||||
srtp_err_status_t srtp_validate_encrypted_extensions_headers(void);
|
||||
|
||||
#ifdef OPENSSL
|
||||
#ifdef GCM
|
||||
srtp_err_status_t srtp_validate_encrypted_extensions_headers_gcm(void);
|
||||
#endif
|
||||
|
||||
@ -79,7 +79,7 @@ srtp_err_status_t srtp_dealloc_big_policy(srtp_policy_t *list);
|
||||
|
||||
srtp_err_status_t srtp_test_empty_payload(void);
|
||||
|
||||
#ifdef OPENSSL
|
||||
#ifdef GCM
|
||||
srtp_err_status_t srtp_test_empty_payload_gcm(void);
|
||||
#endif
|
||||
|
||||
@ -422,7 +422,7 @@ int main(int argc, char *argv[])
|
||||
exit(1);
|
||||
}
|
||||
|
||||
#ifdef OPENSSL
|
||||
#ifdef GCM
|
||||
printf("testing srtp_protect and srtp_unprotect against "
|
||||
"reference packet using GCM\n");
|
||||
if (srtp_validate_gcm() == srtp_err_status_ok) {
|
||||
@ -442,7 +442,7 @@ int main(int argc, char *argv[])
|
||||
exit(1);
|
||||
}
|
||||
|
||||
#ifdef OPENSSL
|
||||
#ifdef GCM
|
||||
printf("testing srtp_protect and srtp_unprotect against "
|
||||
"reference packet with encrypted extension headers (GCM)\n");
|
||||
if (srtp_validate_encrypted_extensions_headers_gcm() ==
|
||||
@ -478,7 +478,7 @@ int main(int argc, char *argv[])
|
||||
printf("failed\n");
|
||||
exit(1);
|
||||
}
|
||||
#ifdef OPENSSL
|
||||
#ifdef GCM
|
||||
printf("testing srtp_protect and srtp_unprotect against "
|
||||
"packet with empty payload (GCM)\n");
|
||||
if (srtp_test_empty_payload_gcm() == srtp_err_status_ok) {
|
||||
@ -1077,8 +1077,8 @@ srtp_err_status_t srtp_test(const srtp_policy_t *policy,
|
||||
* data following the packet is different, then we know that the
|
||||
* protect function is overwriting the end of the packet.
|
||||
*/
|
||||
srtp_get_protect_trailer_length(srtp_sender, use_mki, mki_index,
|
||||
&tag_length);
|
||||
err_check(srtp_get_protect_trailer_length(srtp_sender, use_mki, mki_index,
|
||||
&tag_length));
|
||||
pkt_end = (uint8_t *)hdr + msg_len + tag_length;
|
||||
for (i = 0; i < 4; i++) {
|
||||
if (pkt_end[i] != 0xff) {
|
||||
@ -1341,6 +1341,8 @@ srtp_err_status_t srtcp_test(const srtp_policy_t *policy, int mki_index)
|
||||
*/
|
||||
rcvr_policy = (srtp_policy_t *)malloc(sizeof(srtp_policy_t));
|
||||
if (rcvr_policy == NULL) {
|
||||
free(hdr);
|
||||
free(hdr2);
|
||||
return srtp_err_status_alloc_fail;
|
||||
}
|
||||
memcpy(rcvr_policy, policy, sizeof(srtp_policy_t));
|
||||
@ -1606,6 +1608,9 @@ double mips_estimate(int num_trials, int *ignore)
|
||||
sum += i;
|
||||
}
|
||||
t = clock() - t;
|
||||
if (t < 1) {
|
||||
t = 1;
|
||||
}
|
||||
|
||||
/* printf("%d\n", sum); */
|
||||
*ignore = sum;
|
||||
@ -1772,7 +1777,7 @@ srtp_err_status_t srtp_validate()
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
#ifdef OPENSSL
|
||||
#ifdef GCM
|
||||
/*
|
||||
* srtp_validate_gcm() verifies the correctness of libsrtp by comparing
|
||||
* an computed packet against the known ciphertext for the plaintext.
|
||||
@ -2063,7 +2068,7 @@ srtp_err_status_t srtp_validate_encrypted_extensions_headers()
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
#ifdef OPENSSL
|
||||
#ifdef GCM
|
||||
|
||||
/*
|
||||
* Headers of test vectors taken from RFC 6904, Appendix A
|
||||
@ -2424,7 +2429,7 @@ srtp_err_status_t srtp_test_empty_payload()
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
|
||||
#ifdef OPENSSL
|
||||
#ifdef GCM
|
||||
srtp_err_status_t srtp_test_empty_payload_gcm()
|
||||
{
|
||||
srtp_t srtp_snd, srtp_recv;
|
||||
@ -2499,7 +2504,7 @@ srtp_err_status_t srtp_test_empty_payload_gcm()
|
||||
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
#endif // OPENSSL
|
||||
#endif // GCM
|
||||
|
||||
srtp_err_status_t srtp_test_remove_stream()
|
||||
{
|
||||
@ -2783,10 +2788,10 @@ srtp_err_status_t srtp_test_setup_protect_trailer_streams(
|
||||
srtp_policy_t policy;
|
||||
srtp_policy_t policy_mki;
|
||||
|
||||
#ifdef OPENSSL
|
||||
#ifdef GCM
|
||||
srtp_policy_t policy_aes_gcm;
|
||||
srtp_policy_t policy_aes_gcm_mki;
|
||||
#endif // OPENSSL
|
||||
#endif // GCM
|
||||
|
||||
memset(&policy, 0, sizeof(policy));
|
||||
srtp_crypto_policy_set_rtp_default(&policy.rtp);
|
||||
@ -2810,7 +2815,7 @@ srtp_err_status_t srtp_test_setup_protect_trailer_streams(
|
||||
policy_mki.keys = test_keys;
|
||||
policy_mki.num_master_keys = 2;
|
||||
|
||||
#ifdef OPENSSL
|
||||
#ifdef GCM
|
||||
memset(&policy_aes_gcm, 0, sizeof(policy_aes_gcm));
|
||||
srtp_crypto_policy_set_aes_gcm_128_16_auth(&policy_aes_gcm.rtp);
|
||||
srtp_crypto_policy_set_aes_gcm_128_16_auth(&policy_aes_gcm.rtcp);
|
||||
@ -2832,7 +2837,7 @@ srtp_err_status_t srtp_test_setup_protect_trailer_streams(
|
||||
policy_aes_gcm_mki.key = NULL;
|
||||
policy_aes_gcm_mki.keys = test_keys;
|
||||
policy_aes_gcm_mki.num_master_keys = 2;
|
||||
#endif
|
||||
#endif // GCM
|
||||
|
||||
/* create a send ctx with defualt profile and test_key */
|
||||
status = srtp_create(srtp_send, &policy);
|
||||
@ -2843,7 +2848,7 @@ srtp_err_status_t srtp_test_setup_protect_trailer_streams(
|
||||
if (status)
|
||||
return status;
|
||||
|
||||
#ifdef OPENSSL
|
||||
#ifdef GCM
|
||||
status = srtp_create(srtp_send_aes_gcm, &policy_aes_gcm);
|
||||
if (status)
|
||||
return status;
|
||||
@ -2851,7 +2856,7 @@ srtp_err_status_t srtp_test_setup_protect_trailer_streams(
|
||||
status = srtp_create(srtp_send_aes_gcm_mki, &policy_aes_gcm_mki);
|
||||
if (status)
|
||||
return status;
|
||||
#endif // OPENSSL
|
||||
#endif // GCM
|
||||
|
||||
return srtp_err_status_ok;
|
||||
}
|
||||
@ -2884,7 +2889,7 @@ srtp_err_status_t srtp_test_protect_trailer_length()
|
||||
if (length != 14)
|
||||
return srtp_err_status_fail;
|
||||
|
||||
#ifdef OPENSSL
|
||||
#ifdef GCM
|
||||
status = srtp_get_protect_trailer_length(srtp_send_aes_gcm, 0, 0, &length);
|
||||
if (status)
|
||||
return status;
|
||||
@ -2901,11 +2906,11 @@ srtp_err_status_t srtp_test_protect_trailer_length()
|
||||
/* TAG Length: 16 bytes + MKI length: 4 bytes*/
|
||||
if (length != 20)
|
||||
return srtp_err_status_fail;
|
||||
#endif // OPENSSL
|
||||
#endif // GCM
|
||||
|
||||
srtp_dealloc(srtp_send);
|
||||
srtp_dealloc(srtp_send_mki);
|
||||
#ifdef OPENSSL
|
||||
#ifdef GCM
|
||||
srtp_dealloc(srtp_send_aes_gcm);
|
||||
srtp_dealloc(srtp_send_aes_gcm_mki);
|
||||
#endif
|
||||
@ -2941,7 +2946,7 @@ srtp_err_status_t srtp_test_protect_rtcp_trailer_length()
|
||||
if (length != 18)
|
||||
return srtp_err_status_fail;
|
||||
|
||||
#ifdef OPENSSL
|
||||
#ifdef GCM
|
||||
status =
|
||||
srtp_get_protect_rtcp_trailer_length(srtp_send_aes_gcm, 0, 0, &length);
|
||||
if (status)
|
||||
@ -2959,11 +2964,11 @@ srtp_err_status_t srtp_test_protect_rtcp_trailer_length()
|
||||
/* TAG Length: 16 bytes + SRTCP Trailer 4 bytes + MKI 4 bytes*/
|
||||
if (length != 24)
|
||||
return srtp_err_status_fail;
|
||||
#endif // OPENSSL
|
||||
#endif // GCM
|
||||
|
||||
srtp_dealloc(srtp_send);
|
||||
srtp_dealloc(srtp_send_mki);
|
||||
#ifdef OPENSSL
|
||||
#ifdef GCM
|
||||
srtp_dealloc(srtp_send_aes_gcm);
|
||||
srtp_dealloc(srtp_send_aes_gcm_mki);
|
||||
#endif
|
||||
@ -3088,6 +3093,7 @@ static srtp_err_status_t test_set_receiver_roc(uint32_t packets,
|
||||
if (status) {
|
||||
return status;
|
||||
}
|
||||
|
||||
seq++;
|
||||
ts++;
|
||||
}
|
||||
@ -3500,7 +3506,7 @@ const srtp_policy_t hmac_only_policy = {
|
||||
NULL
|
||||
};
|
||||
|
||||
#ifdef OPENSSL
|
||||
#ifdef GCM
|
||||
const srtp_policy_t aes128_gcm_8_policy = {
|
||||
{ ssrc_any_outbound, 0 }, /* SSRC */
|
||||
{
|
||||
@ -3786,7 +3792,7 @@ const srtp_policy_t *policy_array[] = {
|
||||
&hmac_only_policy,
|
||||
&aes_only_policy,
|
||||
&default_policy,
|
||||
#ifdef OPENSSL
|
||||
#ifdef GCM
|
||||
&aes128_gcm_8_policy,
|
||||
&aes128_gcm_8_cauth_policy,
|
||||
&aes256_gcm_8_policy,
|
||||
|
||||
@ -47,7 +47,8 @@
|
||||
#include <string.h>
|
||||
#include <stdint.h>
|
||||
|
||||
char bit_string[MAX_PRINT_STRING_LEN];
|
||||
/* include space for null terminator */
|
||||
char bit_string[MAX_PRINT_STRING_LEN + 1];
|
||||
|
||||
static inline int hex_char_to_nibble(uint8_t c)
|
||||
{
|
||||
@ -151,7 +152,7 @@ char *octet_string_hex_string(const void *s, int length)
|
||||
|
||||
/* truncate string if it would be too long */
|
||||
if (length > MAX_PRINT_STRING_LEN) {
|
||||
length = MAX_PRINT_STRING_LEN - 1;
|
||||
length = MAX_PRINT_STRING_LEN;
|
||||
}
|
||||
|
||||
for (i = 0; i < length; i += 2) {
|
||||
|
||||
@ -1,2 +1,3 @@
|
||||
srtp updated from CVS on Fri Sep 21 14:51:37 EDT 2012
|
||||
srtp updated to revision 8f38517394a45678cd4468febf69f75722f35d00 from git on Wed Nov 22 14:15:32 PST 2017
|
||||
srtp updated to revision bb0412ee84ebe3d2916b45b19de72fabb183d9db from git on Tue Sep 11 21:51:05 PDT 2018
|
||||
|
||||
Loading…
Reference in New Issue
Block a user