diff options
| -rw-r--r-- | sys/crypto/rijndael/rijndael-api-fst.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/sys/crypto/rijndael/rijndael-api-fst.c b/sys/crypto/rijndael/rijndael-api-fst.c index ecccc22..5479763 100644 --- a/sys/crypto/rijndael/rijndael-api-fst.c +++ b/sys/crypto/rijndael/rijndael-api-fst.c @@ -103,7 +103,11 @@ int rijndael_cipherInit(cipherInstance *cipher, BYTE mode, char *IV) { int rijndael_blockEncrypt(cipherInstance *cipher, keyInstance *key, BYTE *input, int inputLen, BYTE *outBuffer) { int i, k, t, numBlocks; +#if 1 /*STRICT_ALIGN*/ + u_int8_t block[16], iv[16]; +#else u_int8_t block[16], *iv; +#endif if (cipher == NULL || key == NULL || @@ -126,21 +130,41 @@ int rijndael_blockEncrypt(cipherInstance *cipher, keyInstance *key, break; case MODE_CBC: +#if 1 /*STRICT_ALIGN*/ + memcpy(iv, cipher->IV, 16); +#else iv = cipher->IV; +#endif for (i = numBlocks; i > 0; i--) { +#if 1 /*STRICT_ALIGN*/ + memcpy(block, input, 16); + ((u_int32_t*)block)[0] ^= ((u_int32_t*)iv)[0]; + ((u_int32_t*)block)[1] ^= ((u_int32_t*)iv)[1]; + ((u_int32_t*)block)[2] ^= ((u_int32_t*)iv)[2]; + ((u_int32_t*)block)[3] ^= ((u_int32_t*)iv)[3]; +#else ((u_int32_t*)block)[0] = ((u_int32_t*)input)[0] ^ ((u_int32_t*)iv)[0]; ((u_int32_t*)block)[1] = ((u_int32_t*)input)[1] ^ ((u_int32_t*)iv)[1]; ((u_int32_t*)block)[2] = ((u_int32_t*)input)[2] ^ ((u_int32_t*)iv)[2]; ((u_int32_t*)block)[3] = ((u_int32_t*)input)[3] ^ ((u_int32_t*)iv)[3]; +#endif rijndaelEncrypt(key->rk, key->Nr, block, outBuffer); +#if 1 /*STRICT_ALIGN*/ + memcpy(iv, outBuffer, 16); +#else iv = outBuffer; +#endif input += 16; outBuffer += 16; } break; case MODE_CFB1: +#if 1 /*STRICT_ALIGN*/ + memcpy(iv, cipher->IV, 16); +#else iv = cipher->IV; +#endif for (i = numBlocks; i > 0; i--) {
memcpy(outBuffer, input, 16); for (k = 0; k < 128; k++) { @@ -154,6 +178,9 @@ int rijndael_blockEncrypt(cipherInstance *cipher, keyInstance *key, outBuffer += 16; input += 16; } +#if 1 /*STRICT_ALIGN*/ + memcpy(cipher->IV, iv, 16); +#endif break; default: @@ -237,7 +264,11 @@ int rijndael_padEncrypt(cipherInstance *cipher, keyInstance *key, int rijndael_blockDecrypt(cipherInstance *cipher, keyInstance *key, BYTE *input, int inputLen, BYTE *outBuffer) { int i, k, t, numBlocks; +#if 1 /*STRICT_ALIGN*/ + u_int8_t block[16], iv[16]; +#else u_int8_t block[16], *iv; +#endif if (cipher == NULL || key == NULL || @@ -260,22 +291,37 @@ int rijndael_blockDecrypt(cipherInstance *cipher, keyInstance *key, break; case MODE_CBC: +#if 1 /*STRICT_ALIGN*/ + memcpy(iv, cipher->IV, 16); +#else iv = cipher->IV; +#endif for (i = numBlocks; i > 0; i--) { rijndaelDecrypt(key->rk, key->Nr, input, block); ((u_int32_t*)block)[0] ^= ((u_int32_t*)iv)[0]; ((u_int32_t*)block)[1] ^= ((u_int32_t*)iv)[1]; ((u_int32_t*)block)[2] ^= ((u_int32_t*)iv)[2]; ((u_int32_t*)block)[3] ^= ((u_int32_t*)iv)[3]; +#if 1 /*STRICT_ALIGN*/ + memcpy(iv, input, 16); +#else memcpy(cipher->IV, input, 16); +#endif memcpy(outBuffer, block, 16); input += 16; outBuffer += 16; } +#if 1 /*STRICT_ALIGN*/ + memcpy(cipher->IV, iv, 16); +#endif break; case MODE_CFB1: +#if 1 /*STRICT_ALIGN*/ + memcpy(iv, cipher->IV, 16); +#else iv = cipher->IV; +#endif for (i = numBlocks; i > 0; i--) { memcpy(outBuffer, input, 16);
for (k = 0; k < 128; k++) { @@ -289,6 +335,9 @@ int rijndael_blockDecrypt(cipherInstance *cipher, keyInstance *key, outBuffer += 16; input += 16; } +#if 1 /*STRICT_ALIGN*/ + memcpy(cipher->IV, iv, 16); +#endif break; default: |
