int
compute_checksum(uchar_t *cksum_buf, int cksum, uchar_t *buf, int64_t bytes)
{
if (cksum == CKSUM_CRC64) {
uint64_t *ck = (uint64_t *)cksum_buf;
*ck = lzma_crc64(buf, bytes, 0);
} else if (cksum == CKSUM_SKEIN256) {
Skein_512_Ctxt_t ctx;
Skein_512_Init(&ctx, 256);
Skein_512_Update(&ctx, buf, bytes);
Skein_512_Final(&ctx, cksum_buf);
} else if (cksum == CKSUM_SKEIN512) {
Skein_512_Ctxt_t ctx;
Skein_512_Init(&ctx, 512);
Skein_512_Update(&ctx, buf, bytes);
Skein_512_Final(&ctx, cksum_buf);
} else if (cksum == CKSUM_SHA256) {
if (cksum_provider == PROVIDER_OPENSSL) {
SHA256_CTX ctx;
SHA256_Init(&ctx);
SHA256_Update(&ctx, buf, bytes);
SHA256_Final(cksum_buf, &ctx);
} else {
SHA256_Context ctx;
opt_SHA256_Init(&ctx);
opt_SHA256_Update(&ctx, buf, bytes);
opt_SHA256_Final(&ctx, cksum_buf);
}
} else if (cksum == CKSUM_SHA512) {
SHA512_CTX ctx;
SHA512_Init(&ctx);
SHA512_Update(&ctx, buf, bytes);
SHA512_Final(cksum_buf, &ctx);
} else if (cksum == CKSUM_KECCAK256) {
if (Keccak_Hash(256, buf, bytes, cksum_buf) != 0)
return (-1);
} else if (cksum == CKSUM_KECCAK512) {
if (Keccak_Hash(512, buf, bytes, cksum_buf) != 0)
return (-1);
} else {
return (-1);
}
return (0);
}
int Skein_512(const u08b_t *msg, size_t msgByteCnt, u08b_t *hashVal) {
Skein_512_Ctxt_t ctx;
if (Skein_512_Init(&ctx)) return SKEIN_FAIL;
if (Skein_512_Update(&ctx, msg, msgByteCnt)) return SKEIN_FAIL;
if (Skein_512_Final(&ctx, hashVal)) return SKEIN_FAIL;
return SKEIN_SUCCESS;
}
int skein_test(void)
{
#ifndef LTC_TEST
return CRYPT_NOP;
#else
static const struct {
char *msg;
unsigned char hash[20];
} tests[] = {
{ {0xFF, 0x00 },
{ 0x42, 0xAA, 0x6B, 0xD9, 0xCA, 0x92, 0xE9, 0x0E, 0xA2, 0x8D, 0xF6, 0xF6, 0xF2, 0xD0, 0xD9, 0xB8,
0x5A, 0x2D, 0x19, 0x07, 0xEE, 0x4D, 0xC1, 0xB1, 0x71, 0xAC, 0xE7, 0xEB, 0x11, 0x59, 0xBE, 0x3B,
0xD1, 0xBC, 0x56, 0x58, 0x6D, 0x92, 0x49, 0x2B, 0x6E, 0xFF, 0x9B, 0xE0, 0x33, 0x06, 0x99, 0x4C,
0x65, 0xA3, 0x32, 0xC4, 0xC2, 0x41, 0x60, 0xF4, 0x66, 0x55, 0x04, 0x0E, 0x55, 0x8E, 0x83, 0x29 }
},
{ { 0xFF, 0xFE, 0xFD, 0xFC, 0xFB, 0xFA, 0xF9, 0xF8, 0xF7, 0xF6, 0xF5, 0xF4, 0xF3, 0xF2, 0xF1, 0xF0,
0xEF, 0xEE, 0xED, 0xEC, 0xEB, 0xEA, 0xE9, 0xE8, 0xE7, 0xE6, 0xE5, 0xE4, 0xE3, 0xE2, 0xE1, 0xE0,
0xDF, 0xDE, 0xDD, 0xDC, 0xDB, 0xDA, 0xD9, 0xD8, 0xD7, 0xD6, 0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xD0,
0xCF, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA, 0xC9, 0xC8, 0xC7, 0xC6, 0xC5, 0xC4, 0xC3, 0xC2, 0xC1, 0xC0,
0x00 },
{ 0x04, 0xF9, 0x6C, 0x6F, 0x61, 0xB3, 0xE2, 0x37, 0xA4, 0xFA, 0x77, 0x55, 0xEE, 0x4A, 0xCF, 0x34,
0x49, 0x42, 0x22, 0x96, 0x89, 0x54, 0xF4, 0x95, 0xAD, 0x14, 0x7A, 0x1A, 0x71, 0x5F, 0x7A, 0x73,
0xEB, 0xEC, 0xFA, 0x1E, 0xF2, 0x75, 0xBE, 0xD8, 0x7D, 0xC6, 0x0B, 0xD1, 0xA0, 0xBC, 0x60, 0x21,
0x06, 0xFA, 0x98, 0xF8, 0xE7, 0x23, 0x7B, 0xD1, 0xAC, 0x09, 0x58, 0xE7, 0x6D, 0x30, 0x66, 0x78 }
}
};
int i;
unsigned char tmp[64];
Skein_512_Ctxt_t md;
for (i = 0; i < (int)(sizeof(tests) / sizeof(tests[0])); i++) {
Skein_512_Init(&md, 512);
Skein_512_Update(&md, (unsigned char*)tests[i].msg, (unsigned long)strlen(tests[i].msg));
Skein_512_Final(&md, tmp);
if (XMEMCMP(tmp, tests[i].hash, 20) != 0) {
return CRYPT_FAIL_TESTVECTOR;
}
}
return CRYPT_OK;
#endif
}
/* select the context size and init the context */
HashReturn Init(hashState *state, int hashbitlen)
{
//#if SKEIN_256_NIST_MAX_HASH_BITS
/*if (hashbitlen <= SKEIN_256_NIST_MAX_HASHBITS)
{
Skein_Assert(hashbitlen > 0,BAD_HASHLEN);
state->statebits = 64*SKEIN_256_STATE_WORDS;
return Skein_256_Init(&state->u.ctx_256,(size_t) hashbitlen);
}
#endif
if (hashbitlen <= SKEIN_512_NIST_MAX_HASHBITS)
{*/
state->statebits = 64*SKEIN_512_STATE_WORDS;
return Skein_512_Init(&state->u.ctx_512,(size_t) hashbitlen);
/* }
else
{
state->statebits = 64*SKEIN1024_STATE_WORDS;
return Skein1024_Init(&state->u.ctx1024,(size_t) hashbitlen);
}*/
}
/* select the context size and init the context */
int Skein::Init(int hashbitlen)
{
#if SKEIN_256_NIST_MAX_HASH_BITS
if (hashbitlen <= SKEIN_256_NIST_MAX_HASHBITS)
{
Skein_Assert(hashbitlen > 0,BAD_HASHLEN);
skeinState.statebits = 64*SKEIN_256_STATE_WORDS;
return Skein_256_Init(&skeinState.u.ctx_256,(size_t) hashbitlen);
}
#endif
if (hashbitlen <= SKEIN_512_NIST_MAX_HASHBITS)
{
skeinState.statebits = 64*SKEIN_512_STATE_WORDS;
return Skein_512_Init(&skeinState.u.ctx_512,(size_t) hashbitlen);
}
else
{
skeinState.statebits = 64*SKEIN1024_STATE_WORDS;
return Skein1024_Init(&skeinState.u.ctx1024,(size_t) hashbitlen);
}
}
void
SKEIN512_Init(SKEIN512_CTX * ctx)
{
Skein_512_Init(ctx, 512);
}