static int
wrap_padlock_hmac_fast (gnutls_mac_algorithm_t algo,
const void *key, size_t key_size, const void *text,
size_t text_size, void *digest)
{
if (algo == GNUTLS_MAC_SHA1 || algo == GNUTLS_MAC_SHA256)
{
unsigned char *pad;
unsigned char pad2[SHA1_DATA_SIZE + MAX_SHA_DIGEST_SIZE];
unsigned char hkey[MAX_SHA_DIGEST_SIZE];
unsigned int digest_size = _gnutls_hmac_get_algo_len (algo);
if (key_size > SHA1_DATA_SIZE)
{
wrap_padlock_hash_fast (algo, key, key_size, hkey);
key = hkey;
key_size = digest_size;
}
pad = gnutls_malloc (text_size + SHA1_DATA_SIZE);
if (pad == NULL)
return gnutls_assert_val (GNUTLS_E_MEMORY_ERROR);
memset (pad, IPAD, SHA1_DATA_SIZE);
memxor (pad, key, key_size);
memcpy (&pad[SHA1_DATA_SIZE], text, text_size);
wrap_padlock_hash_fast (algo, pad, text_size + SHA1_DATA_SIZE,
&pad2[SHA1_DATA_SIZE]);
gnutls_free (pad);
memset (pad2, OPAD, SHA1_DATA_SIZE);
memxor (pad2, key, key_size);
wrap_padlock_hash_fast (algo, pad2, digest_size + SHA1_DATA_SIZE,
digest);
}
else
{
struct padlock_hmac_ctx ctx;
int ret;
ret = _hmac_ctx_init (algo, &ctx);
if (ret < 0)
return gnutls_assert_val (ret);
ctx.algo = algo;
wrap_padlock_hmac_setkey (&ctx, key, key_size);
wrap_padlock_hmac_update (&ctx, text, text_size);
wrap_padlock_hmac_output (&ctx, digest, ctx.length);
}
return 0;
}
static int wrap_x86_hmac_fast(gnutls_mac_algorithm_t algo,
const void *nonce, size_t nonce_size,
const void *key, size_t key_size,
const void *text, size_t text_size,
void *digest)
{
struct x86_hmac_ctx ctx;
int ret;
ret = _hmac_ctx_init(algo, &ctx);
if (ret < 0)
return gnutls_assert_val(ret);
ctx.setkey(&ctx, key_size, key);
ctx.update(&ctx, text_size, text);
ctx.digest(&ctx, ctx.length, digest);
return 0;
}
static int wrap_x86_hmac_init(gnutls_mac_algorithm_t algo, void **_ctx)
{
struct x86_hmac_ctx *ctx;
int ret;
ctx = gnutls_calloc(1, sizeof(struct x86_hmac_ctx));
if (ctx == NULL) {
gnutls_assert();
return GNUTLS_E_MEMORY_ERROR;
}
ctx->algo = algo;
ret = _hmac_ctx_init(algo, ctx);
if (ret < 0)
return gnutls_assert_val(ret);
*_ctx = ctx;
return 0;
}
