mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-06 17:16:12 +00:00
274 lines
8.2 KiB
C
274 lines
8.2 KiB
C
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifdef XP_WIN
|
|
#ifndef WIN32_LEAN_AND_MEAN
|
|
#define WIN32_LEAN_AND_MEAN
|
|
#endif
|
|
#endif
|
|
|
|
#include <stdlib.h>
|
|
#include "cryptox.h"
|
|
|
|
#if defined(MAR_NSS)
|
|
|
|
/**
|
|
* Loads the public key for the specified cert name from the NSS store.
|
|
*
|
|
* @param certData The DER-encoded X509 certificate to extract the key from.
|
|
* @param certDataSize The size of certData.
|
|
* @param publicKey Out parameter for the public key to use.
|
|
* @return CryptoX_Success on success, CryptoX_Error on error.
|
|
*/
|
|
CryptoX_Result
|
|
NSS_LoadPublicKey(const unsigned char *certData, unsigned int certDataSize,
|
|
SECKEYPublicKey **publicKey)
|
|
{
|
|
CERTCertificate * cert;
|
|
SECItem certDataItem = { siBuffer, (unsigned char*) certData, certDataSize };
|
|
|
|
if (!certData || !publicKey) {
|
|
return CryptoX_Error;
|
|
}
|
|
|
|
cert = CERT_NewTempCertificate(CERT_GetDefaultCertDB(), &certDataItem, NULL,
|
|
PR_FALSE, PR_TRUE);
|
|
/* Get the cert and embedded public key out of the database */
|
|
if (!cert) {
|
|
return CryptoX_Error;
|
|
}
|
|
*publicKey = CERT_ExtractPublicKey(cert);
|
|
CERT_DestroyCertificate(cert);
|
|
|
|
if (!*publicKey) {
|
|
return CryptoX_Error;
|
|
}
|
|
return CryptoX_Success;
|
|
}
|
|
|
|
CryptoX_Result
|
|
NSS_VerifyBegin(VFYContext **ctx,
|
|
SECKEYPublicKey * const *publicKey)
|
|
{
|
|
SECStatus status;
|
|
if (!ctx || !publicKey || !*publicKey) {
|
|
return CryptoX_Error;
|
|
}
|
|
|
|
/* Check that the key length is large enough for our requirements */
|
|
if ((SECKEY_PublicKeyStrength(*publicKey) * 8) <
|
|
XP_MIN_SIGNATURE_LEN_IN_BYTES) {
|
|
fprintf(stderr, "ERROR: Key length must be >= %d bytes\n",
|
|
XP_MIN_SIGNATURE_LEN_IN_BYTES);
|
|
return CryptoX_Error;
|
|
}
|
|
|
|
*ctx = VFY_CreateContext(*publicKey, NULL,
|
|
SEC_OID_ISO_SHA1_WITH_RSA_SIGNATURE, NULL);
|
|
if (*ctx == NULL) {
|
|
return CryptoX_Error;
|
|
}
|
|
|
|
status = VFY_Begin(*ctx);
|
|
return SECSuccess == status ? CryptoX_Success : CryptoX_Error;
|
|
}
|
|
|
|
/**
|
|
* Verifies if a verify context matches the passed in signature.
|
|
*
|
|
* @param ctx The verify context that the signature should match.
|
|
* @param signature The signature to match.
|
|
* @param signatureLen The length of the signature.
|
|
* @return CryptoX_Success on success, CryptoX_Error on error.
|
|
*/
|
|
CryptoX_Result
|
|
NSS_VerifySignature(VFYContext * const *ctx,
|
|
const unsigned char *signature,
|
|
unsigned int signatureLen)
|
|
{
|
|
SECItem signedItem;
|
|
SECStatus status;
|
|
if (!ctx || !signature || !*ctx) {
|
|
return CryptoX_Error;
|
|
}
|
|
|
|
signedItem.len = signatureLen;
|
|
signedItem.data = (unsigned char*)signature;
|
|
status = VFY_EndWithSignature(*ctx, &signedItem);
|
|
return SECSuccess == status ? CryptoX_Success : CryptoX_Error;
|
|
}
|
|
|
|
#elif defined(XP_WIN)
|
|
/**
|
|
* Verifies if a signature + public key matches a hash context.
|
|
*
|
|
* @param hash The hash context that the signature should match.
|
|
* @param pubKey The public key to use on the signature.
|
|
* @param signature The signature to check.
|
|
* @param signatureLen The length of the signature.
|
|
* @return CryptoX_Success on success, CryptoX_Error on error.
|
|
*/
|
|
CryptoX_Result
|
|
CyprtoAPI_VerifySignature(HCRYPTHASH *hash,
|
|
HCRYPTKEY *pubKey,
|
|
const BYTE *signature,
|
|
DWORD signatureLen)
|
|
{
|
|
DWORD i;
|
|
BOOL result;
|
|
/* Windows APIs expect the bytes in the signature to be in little-endian
|
|
* order, but we write the signature in big-endian order. Other APIs like
|
|
* NSS and OpenSSL expect big-endian order.
|
|
*/
|
|
BYTE *signatureReversed;
|
|
if (!hash || !pubKey || !signature || signatureLen < 1) {
|
|
return CryptoX_Error;
|
|
}
|
|
|
|
signatureReversed = malloc(signatureLen);
|
|
if (!signatureReversed) {
|
|
return CryptoX_Error;
|
|
}
|
|
|
|
for (i = 0; i < signatureLen; i++) {
|
|
signatureReversed[i] = signature[signatureLen - 1 - i];
|
|
}
|
|
result = CryptVerifySignature(*hash, signatureReversed,
|
|
signatureLen, *pubKey, NULL, 0);
|
|
free(signatureReversed);
|
|
return result ? CryptoX_Success : CryptoX_Error;
|
|
}
|
|
|
|
/**
|
|
* Obtains the public key for the passed in cert data
|
|
*
|
|
* @param provider The cyrto provider
|
|
* @param certData Data of the certificate to extract the public key from
|
|
* @param sizeOfCertData The size of the certData buffer
|
|
* @param certStore Pointer to the handle of the certificate store to use
|
|
* @param CryptoX_Success on success
|
|
*/
|
|
CryptoX_Result
|
|
CryptoAPI_LoadPublicKey(HCRYPTPROV provider,
|
|
BYTE *certData,
|
|
DWORD sizeOfCertData,
|
|
HCRYPTKEY *publicKey)
|
|
{
|
|
CRYPT_DATA_BLOB blob;
|
|
CERT_CONTEXT *context;
|
|
if (!provider || !certData || !publicKey) {
|
|
return CryptoX_Error;
|
|
}
|
|
|
|
blob.cbData = sizeOfCertData;
|
|
blob.pbData = certData;
|
|
if (!CryptQueryObject(CERT_QUERY_OBJECT_BLOB, &blob,
|
|
CERT_QUERY_CONTENT_FLAG_CERT,
|
|
CERT_QUERY_FORMAT_FLAG_BINARY,
|
|
0, NULL, NULL, NULL,
|
|
NULL, NULL, (const void **)&context)) {
|
|
return CryptoX_Error;
|
|
}
|
|
|
|
if (!CryptImportPublicKeyInfo(provider,
|
|
PKCS_7_ASN_ENCODING | X509_ASN_ENCODING,
|
|
&context->pCertInfo->SubjectPublicKeyInfo,
|
|
publicKey)) {
|
|
CertFreeCertificateContext(context);
|
|
return CryptoX_Error;
|
|
}
|
|
|
|
CertFreeCertificateContext(context);
|
|
return CryptoX_Success;
|
|
}
|
|
|
|
/* Try to acquire context in this way:
|
|
* 1. Enhanced provider without creating a new key set
|
|
* 2. Enhanced provider with creating a new key set
|
|
* 3. Default provider without creating a new key set
|
|
* 4. Default provider without creating a new key set
|
|
* #2 and #4 should not be needed because of the CRYPT_VERIFYCONTEXT,
|
|
* but we add it just in case.
|
|
*
|
|
* @param provider Out parameter containing the provider handle.
|
|
* @return CryptoX_Success on success, CryptoX_Error on error.
|
|
*/
|
|
CryptoX_Result
|
|
CryptoAPI_InitCryptoContext(HCRYPTPROV *provider)
|
|
{
|
|
if (!CryptAcquireContext(provider,
|
|
NULL,
|
|
MS_ENHANCED_PROV,
|
|
PROV_RSA_FULL,
|
|
CRYPT_VERIFYCONTEXT)) {
|
|
if (!CryptAcquireContext(provider,
|
|
NULL,
|
|
MS_ENHANCED_PROV,
|
|
PROV_RSA_FULL,
|
|
CRYPT_NEWKEYSET | CRYPT_VERIFYCONTEXT)) {
|
|
if (!CryptAcquireContext(provider,
|
|
NULL,
|
|
NULL,
|
|
PROV_RSA_FULL,
|
|
CRYPT_VERIFYCONTEXT)) {
|
|
if (!CryptAcquireContext(provider,
|
|
NULL,
|
|
NULL,
|
|
PROV_RSA_FULL,
|
|
CRYPT_NEWKEYSET | CRYPT_VERIFYCONTEXT)) {
|
|
*provider = CryptoX_InvalidHandleValue;
|
|
return CryptoX_Error;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return CryptoX_Success;
|
|
}
|
|
|
|
/**
|
|
* Begins a signature verification hash context
|
|
*
|
|
* @param provider The crypt provider to use
|
|
* @param hash Out parameter for a handle to the hash context
|
|
* @return CryptoX_Success on success, CryptoX_Error on error.
|
|
*/
|
|
CryptoX_Result
|
|
CryptoAPI_VerifyBegin(HCRYPTPROV provider, HCRYPTHASH* hash)
|
|
{
|
|
BOOL result;
|
|
if (!provider || !hash) {
|
|
return CryptoX_Error;
|
|
}
|
|
|
|
*hash = (HCRYPTHASH)NULL;
|
|
result = CryptCreateHash(provider, CALG_SHA1,
|
|
0, 0, hash);
|
|
return result ? CryptoX_Success : CryptoX_Error;
|
|
}
|
|
|
|
/**
|
|
* Updates a signature verification hash context
|
|
*
|
|
* @param hash The hash context to udpate
|
|
* @param buf The buffer to update the hash context with
|
|
* @param len The size of the passed in buffer
|
|
* @return CryptoX_Success on success, CryptoX_Error on error.
|
|
*/
|
|
CryptoX_Result
|
|
CryptoAPI_VerifyUpdate(HCRYPTHASH* hash, BYTE *buf, DWORD len)
|
|
{
|
|
BOOL result;
|
|
if (!hash || !buf) {
|
|
return CryptoX_Error;
|
|
}
|
|
|
|
result = CryptHashData(*hash, buf, len, 0);
|
|
return result ? CryptoX_Success : CryptoX_Error;
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|