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1. Attempting to perform 8 AES-CBC decrypt operations simultaneously.

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2. Added code to test large AES-CBC decrypts.
This commit is contained in:
John Safranek
2016-04-08 11:53:40 -07:00
parent a0cd888fbf
commit b75dc127f3
3 changed files with 345 additions and 0 deletions
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12
wolfcrypt/src/aes.c
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@@ -1094,10 +1094,17 @@ void AES_CBC_encrypt(const unsigned char* in, unsigned char* out,
XASM_LINK("AES_CBC_encrypt");
#ifdef HAVE_AES_DECRYPT
#ifndef HAVE_AES_DECRYPT_EX
void AES_CBC_decrypt(const unsigned char* in, unsigned char* out,
unsigned char* ivec, unsigned long length,
const unsigned char* KS, int nr)
XASM_LINK("AES_CBC_decrypt");
#else /* HAVE_AES_DECRYPT_EX */
void AES_CBC_decrypt_ex(const unsigned char* in, unsigned char* out,
unsigned char* ivec, unsigned long length,
const unsigned char* KS, int nr)
XASM_LINK("AES_CBC_decrypt_ex");
#endif /* HAVE_AES_DECRYPT_EX */
#endif /* HAVE_AES_DECRYPT */
#endif /* HAVE_AES_CBC */
@@ -2549,8 +2556,13 @@ int wc_AesSetIV(Aes* aes, const byte* iv)
/* if input and output same will overwrite input iv */
XMEMCPY(aes->tmp, in + sz - AES_BLOCK_SIZE, AES_BLOCK_SIZE);
#ifndef HAVE_AES_DECRYPT_EX
AES_CBC_decrypt(in, out, (byte*)aes->reg, sz, (byte*)aes->key,
aes->rounds);
#else /* HAVE_AES_DECRYPT_EX */
AES_CBC_decrypt_ex(in, out, (byte*)aes->reg, sz, (byte*)aes->key,
aes->rounds);
#endif /* HAVE_AES_DECRYPT_EX */
/* store iv for next call */
XMEMCPY(aes->reg, aes->tmp, AES_BLOCK_SIZE);
return 0;