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Synchronous Cavium OCTEON Support for Sniffer

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1. Fixes for AES-GCM.
This commit is contained in:
John Safranek
2019-10-07 17:33:51 -07:00
parent 67b11b8ece
commit 41e0712eb0
2 changed files with 43 additions and 42 deletions
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84
wolfcrypt/src/port/cavium/cavium_octeon_sync.c
View File

@ -487,8 +487,8 @@ static inline void Octeon_GHASH_Final(byte* out, word64 authInSz, word64 inSz)
{
word64* bigOut = (word64*)out;
CVMX_MT_GFM_XOR0(authInSz);
CVMX_MT_GFM_XORMUL1(inSz);
CVMX_MT_GFM_XOR0(authInSz * 8);
CVMX_MT_GFM_XORMUL1(inSz * 8);
CVMX_MF_GFM_RESINP(bigOut[0], 0);
CVMX_MF_GFM_RESINP(bigOut[1], 1);
}
@ -502,7 +502,7 @@ static int Octeon_AesGcm_SetKey(Aes* aes)
if (aes == NULL)
ret = BAD_FUNC_ARG;
if (ret != 0) {
if (ret == 0) {
uint64_t* key = (uint64_t*)aes->devKey;
CVMX_MT_AES_KEY(key[0], 0);
@ -510,6 +510,15 @@ static int Octeon_AesGcm_SetKey(Aes* aes)
CVMX_MT_AES_KEY(key[2], 2);
CVMX_MT_AES_KEY(key[3], 3);
CVMX_MT_AES_KEYLENGTH((aes->keylen / 8) - 1);
if (!aes->keySet) {
uint64_t* bigH = (uint64_t*)aes->H;
CVMX_MT_AES_ENC0(0);
CVMX_MT_AES_ENC1(0);
CVMX_MF_AES_RESULT(bigH[0], 0);
CVMX_MF_AES_RESULT(bigH[1], 1);
aes->keySet = 1;
}
}
return ret;
@ -601,7 +610,6 @@ static int Octeon_AesGcm_SetEncrypt(Aes* aes, byte* in, byte* out, word32 inSz,
word32 i, blocks, remainder;
ALIGN16 byte aesBlockIn[AES_BLOCK_SIZE];
ALIGN16 byte aesBlockOut[AES_BLOCK_SIZE];
ALIGN16 byte aesBlockMask[AES_BLOCK_SIZE];
word64* pIn;
word64* pOut;
word64* pIv;
@ -615,8 +623,8 @@ static int Octeon_AesGcm_SetEncrypt(Aes* aes, byte* in, byte* out, word32 inSz,
CVMX_PREFETCH0(in);
CVMX_MT_AES_ENC0(&pIv[0]);
CVMX_MT_AES_ENC1(&pIv[1]);
CVMX_MT_AES_ENC0(pIv[0]);
CVMX_MT_AES_ENC1(pIv[1]);
blocks = inSz / AES_BLOCK_SIZE;
remainder = inSz % AES_BLOCK_SIZE;
@ -648,44 +656,36 @@ static int Octeon_AesGcm_SetEncrypt(Aes* aes, byte* in, byte* out, word32 inSz,
CVMX_STOREUNA_INT64(pOut[1], out, 8);
}
XMEMSET(aesBlockMask, 0, sizeof(aesBlockMask));
for (i = 0; i < remainder; i++) {
aesBlockIn[i] = in[i];
aesBlockMask[i] = 0xff;
if (remainder > 0) {
XMEMSET(aesBlockOut, 0, sizeof(aesBlockOut));
for (i = 0; i < remainder; i++)
aesBlockIn[i] = in[i];
if (encrypt) {
CVMX_MF_AES_RESULT(pOut[0], 0);
CVMX_MF_AES_RESULT(pOut[1], 1);
pOut[0] ^= pIn[0];
pOut[1] ^= pIn[1];
CVMX_MT_GFM_XOR0(pOut[0]);
CVMX_MT_GFM_XORMUL1(pOut[1]);
}
else {
CVMX_MT_GFM_XOR0(pIn[0]);
CVMX_MT_GFM_XORMUL1(pIn[1]);
CVMX_MF_AES_RESULT(pOut[0], 0);
CVMX_MF_AES_RESULT(pOut[1], 1);
pOut[0] ^= pIn[0];
pOut[1] ^= pIn[1];
}
for (i = 0; i < remainder; i++)
out[i] = aesBlockOut[i];
}
if (encrypt) {
CVMX_MF_AES_RESULT(pOut[0], 0);
CVMX_MF_AES_RESULT(pOut[1], 1);
pOut[0] ^= pIn[0];
pOut[1] ^= pIn[1];
pIv = (word64*)aesBlockMask;
pOut[0] &= pIv[0];
pOut[1] &= pIv[1];
CVMX_MT_GFM_XOR0(pOut[0]);
CVMX_MT_GFM_XORMUL1(pOut[1]);
}
else {
CVMX_MT_GFM_XOR0(pIn[0]);
CVMX_MT_GFM_XORMUL1(pIn[1]);
CVMX_MF_AES_RESULT(pOut[0], 0);
CVMX_MF_AES_RESULT(pOut[1], 1);
pOut[0] ^= pIn[0];
pOut[1] ^= pIn[1];
pIv = (word64*)aesBlockMask;
pOut[0] &= pIv[0];
pOut[1] &= pIv[1];
}
for (i = 0; i < remainder; i++)
out[i] = aesBlockOut[i];
return 0;
}

1
wolfssl/wolfcrypt/aes.h
View File

@ -200,6 +200,7 @@ struct Aes {
(defined(WOLFSSL_DEVCRYPTO_AES) || defined(WOLFSSL_DEVCRYPTO_CBC))) || \
(defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_AES))
word32 devKey[AES_MAX_KEY_SIZE/WOLFSSL_BIT_SIZE/sizeof(word32)]; /* raw key */
int keySet;
#endif
#if defined(WOLFSSL_DEVCRYPTO) && \
(defined(WOLFSSL_DEVCRYPTO_AES) || defined(WOLFSSL_DEVCRYPTO_CBC))