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fix bug with aesgcm and aesni conflict

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This commit is contained in:
John Safranek
2012-09-27 14:38:48 -07:00
parent 07c37ed50c
commit c9617e86d6
1 changed files with 32 additions and 21 deletions
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53
ctaocrypt/src/aes.c
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@ -859,30 +859,12 @@ int AesSetIV(Aes* aes, const byte* iv)
}
int AesSetKey(Aes* aes, const byte* userKey, word32 keylen, const byte* iv,
int dir)
static int AesSetKeyLocal(Aes* aes, const byte* userKey, word32 keylen,
const byte* iv, int dir)
{
word32 temp, *rk = aes->key;
unsigned int i = 0;
if (!((keylen == 16) || (keylen == 24) || (keylen == 32)))
return BAD_FUNC_ARG;
#ifdef CYASSL_AESNI
if (checkAESNI == 0) {
haveAESNI = Check_CPU_support_AES();
checkAESNI = 1;
}
if (haveAESNI) {
if (iv)
XMEMCPY(aes->reg, iv, AES_BLOCK_SIZE);
if (dir == AES_ENCRYPTION)
return AES_set_encrypt_key(userKey, keylen * 8, aes);
else
return AES_set_decrypt_key(userKey, keylen * 8, aes);
}
#endif /* CYASSL_AESNI */
aes->rounds = keylen/4 + 6;
XMEMCPY(rk, userKey, keylen);
@ -1008,6 +990,32 @@ int AesSetKey(Aes* aes, const byte* userKey, word32 keylen, const byte* iv,
}
int AesSetKey(Aes* aes, const byte* userKey, word32 keylen, const byte* iv,
int dir)
{
if (!((keylen == 16) || (keylen == 24) || (keylen == 32)))
return BAD_FUNC_ARG;
#ifdef CYASSL_AESNI
if (checkAESNI == 0) {
haveAESNI = Check_CPU_support_AES();
checkAESNI = 1;
}
if (haveAESNI) {
if (iv)
XMEMCPY(aes->reg, iv, AES_BLOCK_SIZE);
if (dir == AES_ENCRYPTION)
return AES_set_encrypt_key(userKey, keylen * 8, aes);
else
return AES_set_decrypt_key(userKey, keylen * 8, aes);
}
#endif /* CYASSL_AESNI */
return AesSetKeyLocal(aes, userKey, keylen, iv, dir);
}
static void AesEncrypt(Aes* aes, const byte* inBlock, byte* outBlock)
{
word32 s0, s1, s2, s3;
@ -1547,9 +1555,12 @@ void AesGcmSetKey(Aes* aes, const byte* key, word32 len,
{
byte fullIV[AES_BLOCK_SIZE];
if (!((len == 16) || (len == 24) || (len == 32)))
return;
XMEMSET(fullIV, 0, AES_BLOCK_SIZE);
XMEMCPY(fullIV, implicitIV, IMPLICIT_IV_SZ);
AesSetKey(aes, key, len, fullIV, AES_ENCRYPTION);
AesSetKeyLocal(aes, key, len, fullIV, AES_ENCRYPTION);
XMEMSET(fullIV, 0, AES_BLOCK_SIZE);
AesEncrypt(aes, fullIV, aes->H);