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xemu/tests/tcg/multiarch/sha512.c
Alex Bennée d426f4fc6f tests/tcg: add sha512 test 
This imports the sha512 algorithm and related tests from ccan which
offers a cleaner hash implementation with its own validation tests
with which we can exercise TCG code generations.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220225172021.3493923-13-alex.bennee@linaro.org>
2022-02-28 16:42:30 +00:00

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/*
* sha512 test based on CCAN: https://ccodearchive.net/info/crypto/sha512.html
*
* src/crypto/sha512.cpp commit f914f1a746d7f91951c1da262a4a749dd3ebfa71
* Copyright (c) 2014 The Bitcoin Core developers
* Distributed under the MIT software license, see:
* http://www.opensource.org/licenses/mit-license.php.
*
* SPDX-License-Identifier: MIT CC0-1.0
*/
#define _GNU_SOURCE /* See feature_test_macros(7) */
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <ctype.h>
#include <stdarg.h>
/* Required portions from endian.h */
/**
* BSWAP_64 - reverse bytes in a constant uint64_t value.
* @val: constantvalue whose bytes to swap.
*
* Designed to be usable in constant-requiring initializers.
*
* Example:
* struct mystruct {
* char buf[BSWAP_64(0xff00000000000000ULL)];
* };
*/
#define BSWAP_64(val) \
((((uint64_t)(val) & 0x00000000000000ffULL) << 56) \
| (((uint64_t)(val) & 0x000000000000ff00ULL) << 40) \
| (((uint64_t)(val) & 0x0000000000ff0000ULL) << 24) \
| (((uint64_t)(val) & 0x00000000ff000000ULL) << 8) \
| (((uint64_t)(val) & 0x000000ff00000000ULL) >> 8) \
| (((uint64_t)(val) & 0x0000ff0000000000ULL) >> 24) \
| (((uint64_t)(val) & 0x00ff000000000000ULL) >> 40) \
| (((uint64_t)(val) & 0xff00000000000000ULL) >> 56))
typedef uint64_t beint64_t;
#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
/**
* CPU_TO_BE64 - convert a constant uint64_t value to big-endian
* @native: constant to convert
*/
#define CPU_TO_BE64(native) ((beint64_t)(native))
/**
* BE64_TO_CPU - convert a big-endian uint64_t constant
* @le_val: big-endian constant to convert
*/
#define BE64_TO_CPU(le_val) ((uint64_t)(le_val))
#else /* ... HAVE_LITTLE_ENDIAN */
#define CPU_TO_BE64(native) ((beint64_t)BSWAP_64(native))
#define BE64_TO_CPU(le_val) BSWAP_64((uint64_t)le_val)
#endif /* HAVE_LITTE_ENDIAN */
/**
* cpu_to_be64 - convert a uint64_t value to big endian.
* @native: value to convert
*/
static inline beint64_t cpu_to_be64(uint64_t native)
{
return CPU_TO_BE64(native);
}
/**
* be64_to_cpu - convert a big-endian uint64_t value
* @be_val: big-endian value to convert
*/
static inline uint64_t be64_to_cpu(beint64_t be_val)
{
return BE64_TO_CPU(be_val);
}
/* From compiler.h */
#ifndef UNUSED
/**
* UNUSED - a parameter is unused
*
* Some compilers (eg. gcc with -W or -Wunused) warn about unused
* function parameters. This suppresses such warnings and indicates
* to the reader that it's deliberate.
*
* Example:
* // This is used as a callback, so needs to have this prototype.
* static int some_callback(void *unused UNUSED)
* {
* return 0;
* }
*/
#define UNUSED __attribute__((__unused__))
#endif
/* From sha512.h */
/**
* struct sha512 - structure representing a completed SHA512.
* @u.u8: an unsigned char array.
* @u.u64: a 64-bit integer array.
*
* Other fields may be added to the union in future.
*/
struct sha512 {
union {
uint64_t u64[8];
unsigned char u8[64];
} u;
};
/**
* sha512 - return sha512 of an object.
* @sha512: the sha512 to fill in
* @p: pointer to memory,
* @size: the number of bytes pointed to by @p
*
* The bytes pointed to by @p is SHA512 hashed into @sha512. This is
* equivalent to sha512_init(), sha512_update() then sha512_done().
*/
void sha512(struct sha512 *sha, const void *p, size_t size);
/**
* struct sha512_ctx - structure to store running context for sha512
*/
struct sha512_ctx {
uint64_t s[8];
union {
uint64_t u64[16];
unsigned char u8[128];
} buf;
size_t bytes;
};
/**
* sha512_init - initialize an SHA512 context.
* @ctx: the sha512_ctx to initialize
*
* This must be called before sha512_update or sha512_done, or
* alternately you can assign SHA512_INIT.
*
* If it was already initialized, this forgets anything which was
* hashed before.
*
* Example:
* static void hash_all(const char **arr, struct sha512 *hash)
* {
* size_t i;
* struct sha512_ctx ctx;
*
* sha512_init(&ctx);
* for (i = 0; arr[i]; i++)
* sha512_update(&ctx, arr[i], strlen(arr[i]));
* sha512_done(&ctx, hash);
* }
*/
void sha512_init(struct sha512_ctx *ctx);
/**
* SHA512_INIT - initializer for an SHA512 context.
*
* This can be used to statically initialize an SHA512 context (instead
* of sha512_init()).
*
* Example:
* static void hash_all(const char **arr, struct sha512 *hash)
* {
* size_t i;
* struct sha512_ctx ctx = SHA512_INIT;
*
* for (i = 0; arr[i]; i++)
* sha512_update(&ctx, arr[i], strlen(arr[i]));
* sha512_done(&ctx, hash);
* }
*/
#define SHA512_INIT \
{ { 0x6a09e667f3bcc908ull, 0xbb67ae8584caa73bull, \
0x3c6ef372fe94f82bull, 0xa54ff53a5f1d36f1ull, \
0x510e527fade682d1ull, 0x9b05688c2b3e6c1full, \
0x1f83d9abfb41bd6bull, 0x5be0cd19137e2179ull }, \
{ { 0 } }, 0 }
/**
* sha512_update - include some memory in the hash.
* @ctx: the sha512_ctx to use
* @p: pointer to memory,
* @size: the number of bytes pointed to by @p
*
* You can call this multiple times to hash more data, before calling
* sha512_done().
*/
void sha512_update(struct sha512_ctx *ctx, const void *p, size_t size);
/**
* sha512_done - finish SHA512 and return the hash
* @ctx: the sha512_ctx to complete
* @res: the hash to return.
*
* Note that @ctx is *destroyed* by this, and must be reinitialized.
* To avoid that, pass a copy instead.
*/
void sha512_done(struct sha512_ctx *sha512, struct sha512 *res);
/* From sha512.c */
/*
* SHA512 core code translated from the Bitcoin project's C++:
*
* src/crypto/sha512.cpp commit f914f1a746d7f91951c1da262a4a749dd3ebfa71
* Copyright (c) 2014 The Bitcoin Core developers
* Distributed under the MIT software license, see the accompanying
* file COPYING or http://www.opensource.org/licenses/mit-license.php.
*/
/* #include <ccan/endian/endian.h> */
/* #include <ccan/compiler/compiler.h> */
#include <stdbool.h>
#include <assert.h>
#include <string.h>
static void invalidate_sha512(struct sha512_ctx *ctx)
{
ctx->bytes = (size_t)-1;
}
static void check_sha512(struct sha512_ctx *ctx UNUSED)
{
assert(ctx->bytes != (size_t)-1);
}
static uint64_t Ch(uint64_t x, uint64_t y, uint64_t z)
{
return z ^ (x & (y ^ z));
}
static uint64_t Maj(uint64_t x, uint64_t y, uint64_t z)
{
return (x & y) | (z & (x | y));
}
static uint64_t Sigma0(uint64_t x)
{
return (x >> 28 | x << 36) ^ (x >> 34 | x << 30) ^ (x >> 39 | x << 25);
}
static uint64_t Sigma1(uint64_t x)
{
return (x >> 14 | x << 50) ^ (x >> 18 | x << 46) ^ (x >> 41 | x << 23);
}
static uint64_t sigma0(uint64_t x)
{
return (x >> 1 | x << 63) ^ (x >> 8 | x << 56) ^ (x >> 7);
}
static uint64_t sigma1(uint64_t x)
{
return (x >> 19 | x << 45) ^ (x >> 61 | x << 3) ^ (x >> 6);
}
/** One round of SHA-512. */
static void Round(uint64_t a, uint64_t b, uint64_t c, uint64_t *d, uint64_t e, uint64_t f, uint64_t g, uint64_t *h, uint64_t k, uint64_t w)
{
uint64_t t1 = *h + Sigma1(e) + Ch(e, f, g) + k + w;
uint64_t t2 = Sigma0(a) + Maj(a, b, c);
*d += t1;
*h = t1 + t2;
}
/** Perform one SHA-512 transformation, processing a 128-byte chunk. */
static void Transform(uint64_t *s, const uint64_t *chunk)
{
uint64_t a = s[0], b = s[1], c = s[2], d = s[3], e = s[4], f = s[5], g = s[6], h = s[7];
uint64_t w0, w1, w2, w3, w4, w5, w6, w7, w8, w9, w10, w11, w12, w13, w14, w15;
Round(a, b, c, &d, e, f, g, &h, 0x428a2f98d728ae22ull, w0 = be64_to_cpu(chunk[0]));
Round(h, a, b, &c, d, e, f, &g, 0x7137449123ef65cdull, w1 = be64_to_cpu(chunk[1]));
Round(g, h, a, &b, c, d, e, &f, 0xb5c0fbcfec4d3b2full, w2 = be64_to_cpu(chunk[2]));
Round(f, g, h, &a, b, c, d, &e, 0xe9b5dba58189dbbcull, w3 = be64_to_cpu(chunk[3]));
Round(e, f, g, &h, a, b, c, &d, 0x3956c25bf348b538ull, w4 = be64_to_cpu(chunk[4]));
Round(d, e, f, &g, h, a, b, &c, 0x59f111f1b605d019ull, w5 = be64_to_cpu(chunk[5]));
Round(c, d, e, &f, g, h, a, &b, 0x923f82a4af194f9bull, w6 = be64_to_cpu(chunk[6]));
Round(b, c, d, &e, f, g, h, &a, 0xab1c5ed5da6d8118ull, w7 = be64_to_cpu(chunk[7]));
Round(a, b, c, &d, e, f, g, &h, 0xd807aa98a3030242ull, w8 = be64_to_cpu(chunk[8]));
Round(h, a, b, &c, d, e, f, &g, 0x12835b0145706fbeull, w9 = be64_to_cpu(chunk[9]));
Round(g, h, a, &b, c, d, e, &f, 0x243185be4ee4b28cull, w10 = be64_to_cpu(chunk[10]));
Round(f, g, h, &a, b, c, d, &e, 0x550c7dc3d5ffb4e2ull, w11 = be64_to_cpu(chunk[11]));
Round(e, f, g, &h, a, b, c, &d, 0x72be5d74f27b896full, w12 = be64_to_cpu(chunk[12]));
Round(d, e, f, &g, h, a, b, &c, 0x80deb1fe3b1696b1ull, w13 = be64_to_cpu(chunk[13]));
Round(c, d, e, &f, g, h, a, &b, 0x9bdc06a725c71235ull, w14 = be64_to_cpu(chunk[14]));
Round(b, c, d, &e, f, g, h, &a, 0xc19bf174cf692694ull, w15 = be64_to_cpu(chunk[15]));
Round(a, b, c, &d, e, f, g, &h, 0xe49b69c19ef14ad2ull, w0 += sigma1(w14) + w9 + sigma0(w1));
Round(h, a, b, &c, d, e, f, &g, 0xefbe4786384f25e3ull, w1 += sigma1(w15) + w10 + sigma0(w2));
Round(g, h, a, &b, c, d, e, &f, 0x0fc19dc68b8cd5b5ull, w2 += sigma1(w0) + w11 + sigma0(w3));
Round(f, g, h, &a, b, c, d, &e, 0x240ca1cc77ac9c65ull, w3 += sigma1(w1) + w12 + sigma0(w4));
Round(e, f, g, &h, a, b, c, &d, 0x2de92c6f592b0275ull, w4 += sigma1(w2) + w13 + sigma0(w5));
Round(d, e, f, &g, h, a, b, &c, 0x4a7484aa6ea6e483ull, w5 += sigma1(w3) + w14 + sigma0(w6));
Round(c, d, e, &f, g, h, a, &b, 0x5cb0a9dcbd41fbd4ull, w6 += sigma1(w4) + w15 + sigma0(w7));
Round(b, c, d, &e, f, g, h, &a, 0x76f988da831153b5ull, w7 += sigma1(w5) + w0 + sigma0(w8));
Round(a, b, c, &d, e, f, g, &h, 0x983e5152ee66dfabull, w8 += sigma1(w6) + w1 + sigma0(w9));
Round(h, a, b, &c, d, e, f, &g, 0xa831c66d2db43210ull, w9 += sigma1(w7) + w2 + sigma0(w10));
Round(g, h, a, &b, c, d, e, &f, 0xb00327c898fb213full, w10 += sigma1(w8) + w3 + sigma0(w11));
Round(f, g, h, &a, b, c, d, &e, 0xbf597fc7beef0ee4ull, w11 += sigma1(w9) + w4 + sigma0(w12));
Round(e, f, g, &h, a, b, c, &d, 0xc6e00bf33da88fc2ull, w12 += sigma1(w10) + w5 + sigma0(w13));
Round(d, e, f, &g, h, a, b, &c, 0xd5a79147930aa725ull, w13 += sigma1(w11) + w6 + sigma0(w14));
Round(c, d, e, &f, g, h, a, &b, 0x06ca6351e003826full, w14 += sigma1(w12) + w7 + sigma0(w15));
Round(b, c, d, &e, f, g, h, &a, 0x142929670a0e6e70ull, w15 += sigma1(w13) + w8 + sigma0(w0));
Round(a, b, c, &d, e, f, g, &h, 0x27b70a8546d22ffcull, w0 += sigma1(w14) + w9 + sigma0(w1));
Round(h, a, b, &c, d, e, f, &g, 0x2e1b21385c26c926ull, w1 += sigma1(w15) + w10 + sigma0(w2));
Round(g, h, a, &b, c, d, e, &f, 0x4d2c6dfc5ac42aedull, w2 += sigma1(w0) + w11 + sigma0(w3));
Round(f, g, h, &a, b, c, d, &e, 0x53380d139d95b3dfull, w3 += sigma1(w1) + w12 + sigma0(w4));
Round(e, f, g, &h, a, b, c, &d, 0x650a73548baf63deull, w4 += sigma1(w2) + w13 + sigma0(w5));
Round(d, e, f, &g, h, a, b, &c, 0x766a0abb3c77b2a8ull, w5 += sigma1(w3) + w14 + sigma0(w6));
Round(c, d, e, &f, g, h, a, &b, 0x81c2c92e47edaee6ull, w6 += sigma1(w4) + w15 + sigma0(w7));
Round(b, c, d, &e, f, g, h, &a, 0x92722c851482353bull, w7 += sigma1(w5) + w0 + sigma0(w8));
Round(a, b, c, &d, e, f, g, &h, 0xa2bfe8a14cf10364ull, w8 += sigma1(w6) + w1 + sigma0(w9));
Round(h, a, b, &c, d, e, f, &g, 0xa81a664bbc423001ull, w9 += sigma1(w7) + w2 + sigma0(w10));
Round(g, h, a, &b, c, d, e, &f, 0xc24b8b70d0f89791ull, w10 += sigma1(w8) + w3 + sigma0(w11));
Round(f, g, h, &a, b, c, d, &e, 0xc76c51a30654be30ull, w11 += sigma1(w9) + w4 + sigma0(w12));
Round(e, f, g, &h, a, b, c, &d, 0xd192e819d6ef5218ull, w12 += sigma1(w10) + w5 + sigma0(w13));
Round(d, e, f, &g, h, a, b, &c, 0xd69906245565a910ull, w13 += sigma1(w11) + w6 + sigma0(w14));
Round(c, d, e, &f, g, h, a, &b, 0xf40e35855771202aull, w14 += sigma1(w12) + w7 + sigma0(w15));
Round(b, c, d, &e, f, g, h, &a, 0x106aa07032bbd1b8ull, w15 += sigma1(w13) + w8 + sigma0(w0));
Round(a, b, c, &d, e, f, g, &h, 0x19a4c116b8d2d0c8ull, w0 += sigma1(w14) + w9 + sigma0(w1));
Round(h, a, b, &c, d, e, f, &g, 0x1e376c085141ab53ull, w1 += sigma1(w15) + w10 + sigma0(w2));
Round(g, h, a, &b, c, d, e, &f, 0x2748774cdf8eeb99ull, w2 += sigma1(w0) + w11 + sigma0(w3));
Round(f, g, h, &a, b, c, d, &e, 0x34b0bcb5e19b48a8ull, w3 += sigma1(w1) + w12 + sigma0(w4));
Round(e, f, g, &h, a, b, c, &d, 0x391c0cb3c5c95a63ull, w4 += sigma1(w2) + w13 + sigma0(w5));
Round(d, e, f, &g, h, a, b, &c, 0x4ed8aa4ae3418acbull, w5 += sigma1(w3) + w14 + sigma0(w6));
Round(c, d, e, &f, g, h, a, &b, 0x5b9cca4f7763e373ull, w6 += sigma1(w4) + w15 + sigma0(w7));
Round(b, c, d, &e, f, g, h, &a, 0x682e6ff3d6b2b8a3ull, w7 += sigma1(w5) + w0 + sigma0(w8));
Round(a, b, c, &d, e, f, g, &h, 0x748f82ee5defb2fcull, w8 += sigma1(w6) + w1 + sigma0(w9));
Round(h, a, b, &c, d, e, f, &g, 0x78a5636f43172f60ull, w9 += sigma1(w7) + w2 + sigma0(w10));
Round(g, h, a, &b, c, d, e, &f, 0x84c87814a1f0ab72ull, w10 += sigma1(w8) + w3 + sigma0(w11));
Round(f, g, h, &a, b, c, d, &e, 0x8cc702081a6439ecull, w11 += sigma1(w9) + w4 + sigma0(w12));
Round(e, f, g, &h, a, b, c, &d, 0x90befffa23631e28ull, w12 += sigma1(w10) + w5 + sigma0(w13));
Round(d, e, f, &g, h, a, b, &c, 0xa4506cebde82bde9ull, w13 += sigma1(w11) + w6 + sigma0(w14));
Round(c, d, e, &f, g, h, a, &b, 0xbef9a3f7b2c67915ull, w14 += sigma1(w12) + w7 + sigma0(w15));
Round(b, c, d, &e, f, g, h, &a, 0xc67178f2e372532bull, w15 += sigma1(w13) + w8 + sigma0(w0));
Round(a, b, c, &d, e, f, g, &h, 0xca273eceea26619cull, w0 += sigma1(w14) + w9 + sigma0(w1));
Round(h, a, b, &c, d, e, f, &g, 0xd186b8c721c0c207ull, w1 += sigma1(w15) + w10 + sigma0(w2));
Round(g, h, a, &b, c, d, e, &f, 0xeada7dd6cde0eb1eull, w2 += sigma1(w0) + w11 + sigma0(w3));
Round(f, g, h, &a, b, c, d, &e, 0xf57d4f7fee6ed178ull, w3 += sigma1(w1) + w12 + sigma0(w4));
Round(e, f, g, &h, a, b, c, &d, 0x06f067aa72176fbaull, w4 += sigma1(w2) + w13 + sigma0(w5));
Round(d, e, f, &g, h, a, b, &c, 0x0a637dc5a2c898a6ull, w5 += sigma1(w3) + w14 + sigma0(w6));
Round(c, d, e, &f, g, h, a, &b, 0x113f9804bef90daeull, w6 += sigma1(w4) + w15 + sigma0(w7));
Round(b, c, d, &e, f, g, h, &a, 0x1b710b35131c471bull, w7 += sigma1(w5) + w0 + sigma0(w8));
Round(a, b, c, &d, e, f, g, &h, 0x28db77f523047d84ull, w8 += sigma1(w6) + w1 + sigma0(w9));
Round(h, a, b, &c, d, e, f, &g, 0x32caab7b40c72493ull, w9 += sigma1(w7) + w2 + sigma0(w10));
Round(g, h, a, &b, c, d, e, &f, 0x3c9ebe0a15c9bebcull, w10 += sigma1(w8) + w3 + sigma0(w11));
Round(f, g, h, &a, b, c, d, &e, 0x431d67c49c100d4cull, w11 += sigma1(w9) + w4 + sigma0(w12));
Round(e, f, g, &h, a, b, c, &d, 0x4cc5d4becb3e42b6ull, w12 += sigma1(w10) + w5 + sigma0(w13));
Round(d, e, f, &g, h, a, b, &c, 0x597f299cfc657e2aull, w13 += sigma1(w11) + w6 + sigma0(w14));
Round(c, d, e, &f, g, h, a, &b, 0x5fcb6fab3ad6faecull, w14 + sigma1(w12) + w7 + sigma0(w15));
Round(b, c, d, &e, f, g, h, &a, 0x6c44198c4a475817ull, w15 + sigma1(w13) + w8 + sigma0(w0));
s[0] += a;
s[1] += b;
s[2] += c;
s[3] += d;
s[4] += e;
s[5] += f;
s[6] += g;
s[7] += h;
}
static bool alignment_ok(const void *p UNUSED, size_t n UNUSED)
{
#if HAVE_UNALIGNED_ACCESS
return true;
#else
return ((size_t)p % n == 0);
#endif
}
static void add(struct sha512_ctx *ctx, const void *p, size_t len)
{
const unsigned char *data = p;
size_t bufsize = ctx->bytes % 128;
if (bufsize + len >= 128) {
/* Fill the buffer, and process it. */
memcpy(ctx->buf.u8 + bufsize, data, 128 - bufsize);
ctx->bytes += 128 - bufsize;
data += 128 - bufsize;
len -= 128 - bufsize;
Transform(ctx->s, ctx->buf.u64);
bufsize = 0;
}
while (len >= 128) {
/* Process full chunks directly from the source. */
if (alignment_ok(data, sizeof(uint64_t)))
Transform(ctx->s, (const uint64_t *)data);
else {
memcpy(ctx->buf.u8, data, sizeof(ctx->buf));
Transform(ctx->s, ctx->buf.u64);
}
ctx->bytes += 128;
data += 128;
len -= 128;
}
if (len) {
/* Fill the buffer with what remains. */
memcpy(ctx->buf.u8 + bufsize, data, len);
ctx->bytes += len;
}
}
void sha512_init(struct sha512_ctx *ctx)
{
struct sha512_ctx init = SHA512_INIT;
*ctx = init;
}
void sha512_update(struct sha512_ctx *ctx, const void *p, size_t size)
{
check_sha512(ctx);
add(ctx, p, size);
}
void sha512_done(struct sha512_ctx *ctx, struct sha512 *res)
{
static const unsigned char pad[128] = { 0x80 };
uint64_t sizedesc[2] = { 0, 0 };
size_t i;
sizedesc[1] = cpu_to_be64((uint64_t)ctx->bytes << 3);
/* Add '1' bit to terminate, then all 0 bits, up to next block - 16. */
add(ctx, pad, 1 + ((256 - 16 - (ctx->bytes % 128) - 1) % 128));
/* Add number of bits of data (big endian) */
add(ctx, sizedesc, sizeof(sizedesc));
for (i = 0; i < sizeof(ctx->s) / sizeof(ctx->s[0]); i++)
res->u.u64[i] = cpu_to_be64(ctx->s[i]);
invalidate_sha512(ctx);
}
void sha512(struct sha512 *sha, const void *p, size_t size)
{
struct sha512_ctx ctx;
sha512_init(&ctx);
sha512_update(&ctx, p, size);
sha512_done(&ctx, sha);
}
/* From hex.h */
/**
* hex_decode - Unpack a hex string.
* @str: the hexidecimal string
* @slen: the length of @str
* @buf: the buffer to write the data into
* @bufsize: the length of @buf
*
* Returns false if there are any characters which aren't 0-9, a-f or A-F,
* of the string wasn't the right length for @bufsize.
*
* Example:
* unsigned char data[20];
*
* if (!hex_decode(argv[1], strlen(argv[1]), data, 20))
* printf("String is malformed!\n");
*/
bool hex_decode(const char *str, size_t slen, void *buf, size_t bufsize);
/**
* hex_encode - Create a nul-terminated hex string
* @buf: the buffer to read the data from
* @bufsize: the length of @buf
* @dest: the string to fill
* @destsize: the max size of the string
*
* Returns true if the string, including terminator, fit in @destsize;
*
* Example:
* unsigned char buf[] = { 0x1F, 0x2F };
* char str[5];
*
* if (!hex_encode(buf, sizeof(buf), str, sizeof(str)))
* abort();
*/
bool hex_encode(const void *buf, size_t bufsize, char *dest, size_t destsize);
/**
* hex_str_size - Calculate how big a nul-terminated hex string is
* @bytes: bytes of data to represent
*
* Example:
* unsigned char buf[] = { 0x1F, 0x2F };
* char str[hex_str_size(sizeof(buf))];
*
* hex_encode(buf, sizeof(buf), str, sizeof(str));
*/
static inline size_t hex_str_size(size_t bytes)
{
return 2 * bytes + 1;
}
/* From hex.c */
static bool char_to_hex(unsigned char *val, char c)
{
if (c >= '0' && c <= '9') {
*val = c - '0';
return true;
}
if (c >= 'a' && c <= 'f') {
*val = c - 'a' + 10;
return true;
}
if (c >= 'A' && c <= 'F') {
*val = c - 'A' + 10;
return true;
}
return false;
}
bool hex_decode(const char *str, size_t slen, void *buf, size_t bufsize)
{
unsigned char v1, v2;
unsigned char *p = buf;
while (slen > 1) {
if (!char_to_hex(&v1, str[0]) || !char_to_hex(&v2, str[1]))
return false;
if (!bufsize)
return false;
*(p++) = (v1 << 4) | v2;
str += 2;
slen -= 2;
bufsize--;
}
return slen == 0 && bufsize == 0;
}
static char hexchar(unsigned int val)
{
if (val < 10)
return '0' + val;
if (val < 16)
return 'a' + val - 10;
abort();
}
bool hex_encode(const void *buf, size_t bufsize, char *dest, size_t destsize)
{
size_t i;
if (destsize < hex_str_size(bufsize))
return false;
for (i = 0; i < bufsize; i++) {
unsigned int c = ((const unsigned char *)buf)[i];
*(dest++) = hexchar(c >> 4);
*(dest++) = hexchar(c & 0xF);
}
*dest = '\0';
return true;
}
/* From tap.h */
/**
* plan_tests - announce the number of tests you plan to run
* @tests: the number of tests
*
* This should be the first call in your test program: it allows tracing
* of failures which mean that not all tests are run.
*
* If you don't know how many tests will actually be run, assume all of them
* and use skip() if you don't actually run some tests.
*
* Example:
* plan_tests(13);
*/
void plan_tests(unsigned int tests);
/**
* ok1 - Simple conditional test
* @e: the expression which we expect to be true.
*
* This is the simplest kind of test: if the expression is true, the
* test passes. The name of the test which is printed will simply be
* file name, line number, and the expression itself.
*
* Example:
* ok1(somefunc() == 1);
*/
# define ok1(e) ((e) ? \
_gen_result(1, __func__, __FILE__, __LINE__, "%s", #e) : \
_gen_result(0, __func__, __FILE__, __LINE__, "%s", #e))
/**
* exit_status - the value that main should return.
*
* For maximum compatibility your test program should return a particular exit
* code (ie. 0 if all tests were run, and every test which was expected to
* succeed succeeded).
*
* Example:
* exit(exit_status());
*/
int exit_status(void);
/**
* tap_fail_callback - function to call when we fail
*
* This can be used to ease debugging, or exit on the first failure.
*/
void (*tap_fail_callback)(void);
/* From tap.c */
static int no_plan = 0;
static int skip_all = 0;
static int have_plan = 0;
static unsigned int test_count = 0; /* Number of tests that have been run */
static unsigned int e_tests = 0; /* Expected number of tests to run */
static unsigned int failures = 0; /* Number of tests that failed */
static char *todo_msg = NULL;
static const char *todo_msg_fixed = "libtap malloc issue";
static int todo = 0;
static int test_died = 0;
static int test_pid;
static void
_expected_tests(unsigned int tests)
{
printf("1..%d\n", tests);
e_tests = tests;
}
static void
diagv(const char *fmt, va_list ap)
{
fputs("# ", stdout);
vfprintf(stdout, fmt, ap);
fputs("\n", stdout);
}
static void
_diag(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
diagv(fmt, ap);
va_end(ap);
}
/*
* Generate a test result.
*
* ok -- boolean, indicates whether or not the test passed.
* test_name -- the name of the test, may be NULL
* test_comment -- a comment to print afterwards, may be NULL
*/
unsigned int
_gen_result(int ok, const char *func, const char *file, unsigned int line,
const char *test_name, ...)
{
va_list ap;
char *local_test_name = NULL;
char *c;
int name_is_digits;
test_count++;
/* Start by taking the test name and performing any printf()
expansions on it */
if(test_name != NULL) {
va_start(ap, test_name);
if (vasprintf(&local_test_name, test_name, ap) < 0)
local_test_name = NULL;
va_end(ap);
/* Make sure the test name contains more than digits
and spaces. Emit an error message and exit if it
does */
if(local_test_name) {
name_is_digits = 1;
for(c = local_test_name; *c != '\0'; c++) {
if(!isdigit((unsigned char)*c)
&& !isspace((unsigned char)*c)) {
name_is_digits = 0;
break;
}
}
if(name_is_digits) {
_diag(" You named your test '%s'. You shouldn't use numbers for your test names.", local_test_name);
_diag(" Very confusing.");
}
}
}
if(!ok) {
printf("not ");
failures++;
}
printf("ok %d", test_count);
if(test_name != NULL) {
printf(" - ");
/* Print the test name, escaping any '#' characters it
might contain */
if(local_test_name != NULL) {
flockfile(stdout);
for(c = local_test_name; *c != '\0'; c++) {
if(*c == '#')
fputc('\\', stdout);
fputc((int)*c, stdout);
}
funlockfile(stdout);
} else { /* vasprintf() failed, use a fixed message */
printf("%s", todo_msg_fixed);
}
}
/* If we're in a todo_start() block then flag the test as being
TODO. todo_msg should contain the message to print at this
point. If it's NULL then asprintf() failed, and we should
use the fixed message.
This is not counted as a failure, so decrement the counter if
the test failed. */
if(todo) {
printf(" # TODO %s", todo_msg ? todo_msg : todo_msg_fixed);
if(!ok)
failures--;
}
printf("\n");
if(!ok)
_diag(" Failed %stest (%s:%s() at line %d)",
todo ? "(TODO) " : "", file, func, line);
free(local_test_name);
if (!ok && tap_fail_callback)
tap_fail_callback();
/* We only care (when testing) that ok is positive, but here we
specifically only want to return 1 or 0 */
return ok ? 1 : 0;
}
/*
* Cleanup at the end of the run, produce any final output that might be
* required.
*/
static void
_cleanup(void)
{
/* If we forked, don't do cleanup in child! */
if (getpid() != test_pid)
return;
/* If plan_no_plan() wasn't called, and we don't have a plan,
and we're not skipping everything, then something happened
before we could produce any output */
if(!no_plan && !have_plan && !skip_all) {
_diag("Looks like your test died before it could output anything.");
return;
}
if(test_died) {
_diag("Looks like your test died just after %d.", test_count);
return;
}
/* No plan provided, but now we know how many tests were run, and can
print the header at the end */
if(!skip_all && (no_plan || !have_plan)) {
printf("1..%d\n", test_count);
}
if((have_plan && !no_plan) && e_tests < test_count) {
_diag("Looks like you planned %d tests but ran %d extra.",
e_tests, test_count - e_tests);
return;
}
if((have_plan || !no_plan) && e_tests > test_count) {
_diag("Looks like you planned %d tests but only ran %d.",
e_tests, test_count);
if(failures) {
_diag("Looks like you failed %d tests of %d run.",
failures, test_count);
}
return;
}
if(failures)
_diag("Looks like you failed %d tests of %d.",
failures, test_count);
}
/*
* Initialise the TAP library. Will only do so once, however many times it's
* called.
*/
static void
_tap_init(void)
{
static int run_once = 0;
if(!run_once) {
test_pid = getpid();
atexit(_cleanup);
/* stdout needs to be unbuffered so that the output appears
in the same place relative to stderr output as it does
with Test::Harness */
// setbuf(stdout, 0);
run_once = 1;
}
}
/*
* Note the number of tests that will be run.
*/
void
plan_tests(unsigned int tests)
{
_tap_init();
if(have_plan != 0) {
fprintf(stderr, "You tried to plan twice!\n");
test_died = 1;
exit(255);
}
if(tests == 0) {
fprintf(stderr, "You said to run 0 tests! You've got to run something.\n");
test_died = 1;
exit(255);
}
have_plan = 1;
_expected_tests(tests);
}
static int
exit_status_(void)
{
int r;
/* If there's no plan, just return the number of failures */
if(no_plan || !have_plan) {
return failures;
}
/* Ran too many tests? Return the number of tests that were run
that shouldn't have been */
if(e_tests < test_count) {
r = test_count - e_tests;
return r;
}
/* Return the number of tests that failed + the number of tests
that weren't run */
r = failures + e_tests - test_count;
return r;
}
int
exit_status(void)
{
int r = exit_status_();
if (r > 255)
r = 255;
return r;
}
/* From run-test-vectors.c */
/* Test vectors. */
struct test {
const char *vector;
size_t repetitions;
const char *expected;
};
static const char ZEROES[] =
"0000000000000000000000000000000000000000000000000000000000000000"
"0000000000000000000000000000000000000000000000000000000000000000";
static struct test tests[] = {
/* http://csrc.nist.gov/groups/STM/cavp/secure-hashing.html ShortMsg */
{ "21", 1,
"3831a6a6155e509dee59a7f451eb35324d8f8f2df6e3708894740f98fdee2388"
"9f4de5adb0c5010dfb555cda77c8ab5dc902094c52de3278f35a75ebc25f093a" },
{ "9083", 1,
"55586ebba48768aeb323655ab6f4298fc9f670964fc2e5f2731e34dfa4b0c09e"
"6e1e12e3d7286b3145c61c2047fb1a2a1297f36da64160b31fa4c8c2cddd2fb4" },
{ "0a55db", 1,
"7952585e5330cb247d72bae696fc8a6b0f7d0804577e347d99bc1b11e52f3849"
"85a428449382306a89261ae143c2f3fb613804ab20b42dc097e5bf4a96ef919b" },
{ "23be86d5", 1,
"76d42c8eadea35a69990c63a762f330614a4699977f058adb988f406fb0be8f2"
"ea3dce3a2bbd1d827b70b9b299ae6f9e5058ee97b50bd4922d6d37ddc761f8eb" },
{ "eb0ca946c1", 1,
"d39ecedfe6e705a821aee4f58bfc489c3d9433eb4ac1b03a97e321a2586b40dd"
"0522f40fa5aef36afff591a78c916bfc6d1ca515c4983dd8695b1ec7951d723e" },
{ "38667f39277b", 1,
"85708b8ff05d974d6af0801c152b95f5fa5c06af9a35230c5bea2752f031f9bd"
"84bd844717b3add308a70dc777f90813c20b47b16385664eefc88449f04f2131" },
{ "b39f71aaa8a108", 1,
"258b8efa05b4a06b1e63c7a3f925c5ef11fa03e3d47d631bf4d474983783d8c0"
"b09449009e842fc9fa15de586c67cf8955a17d790b20f41dadf67ee8cdcdfce6" },
{ "dc28484ebfd293d62ac759d5754bdf502423e4d419fa79020805134b2ce3dff7"
"38c7556c91d810adbad8dd210f041296b73c2185d4646c97fc0a5b69ed49ac8c"
"7ced0bd1cfd7e3c3cca47374d189247da6811a40b0ab097067ed4ad40ade2e47"
"91e39204e398b3204971445822a1be0dd93af8", 1,
"615115d2e8b62e345adaa4bdb95395a3b4fe27d71c4a111b86c1841463c5f03d"
"6b20d164a39948ab08ae060720d05c10f6022e5c8caf2fa3bca2e04d9c539ded" },
{ "fd2203e467574e834ab07c9097ae164532f24be1eb5d88f1af7748ceff0d2c67"
"a21f4e4097f9d3bb4e9fbf97186e0db6db0100230a52b453d421f8ab9c9a6043"
"aa3295ea20d2f06a2f37470d8a99075f1b8a8336f6228cf08b5942fc1fb4299c"
"7d2480e8e82bce175540bdfad7752bc95b577f229515394f3ae5cec870a4b2f8",
1,
"a21b1077d52b27ac545af63b32746c6e3c51cb0cb9f281eb9f3580a6d4996d5c"
"9917d2a6e484627a9d5a06fa1b25327a9d710e027387fc3e07d7c4d14c6086cc" },
/* http://www.di-mgt.com.au/sha_testvectors.html */
{ ZEROES, 1,
"7be9fda48f4179e611c698a73cff09faf72869431efee6eaad14de0cb44bbf66"
"503f752b7a8eb17083355f3ce6eb7d2806f236b25af96a24e22b887405c20081" }
};
static void *xmalloc(size_t size)
{
char * ret;
ret = malloc(size);
if (ret == NULL) {
perror("malloc");
abort();
}
return ret;
}
static bool do_test(const struct test *t)
{
struct sha512 h;
char got[128 + 1];
bool passed;
size_t i, vector_len = strlen(t->vector) / 2;
void *vector = xmalloc(vector_len);
hex_decode(t->vector, vector_len * 2, vector, vector_len);
for (i = 0; i < t->repetitions; i++) {
sha512(&h, vector, vector_len);
if (t->repetitions > 1)
memcpy(vector, &h, sizeof(h));
}
hex_encode(&h, sizeof(h), got, sizeof(got));
passed = strcmp(t->expected, got) == 0;
free(vector);
return passed;
}
int main(void)
{
const size_t num_tests = sizeof(tests) / sizeof(tests[0]);
size_t i;
/* This is how many tests you plan to run */
plan_tests(num_tests);
for (i = 0; i < num_tests; i++)
ok1(do_test(&tests[i]));
/* This exits depending on whether all tests passed */
return exit_status();
}
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