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sha3: align data for Sha3Update

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This commit is contained in:
Elms
2021-06-25 08:50:20 -07:00
parent dc7beab784
commit c9597ea735
1 changed files with 13 additions and 1 deletions
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14
wolfcrypt/src/sha3.c
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@ -538,6 +538,18 @@ static void BlockSha3(word64 *s)
}
#endif /* WOLFSSL_SHA3_SMALL */
static WC_INLINE word64 Load64Unaligned(const unsigned char *a)
{
return ((word64)a[0] << 0) |
((word64)a[1] << 8) |
((word64)a[2] << 16) |
((word64)a[3] << 24) |
((word64)a[4] << 32) |
((word64)a[5] << 40) |
((word64)a[6] << 48) |
((word64)a[7] << 56);
}
/* Convert the array of bytes, in little-endian order, to a 64-bit integer.
*
* a Array of bytes.
@ -632,7 +644,7 @@ static int Sha3Update(wc_Sha3* sha3, const byte* data, word32 len, byte p)
while (len >= ((word32)(p * 8)))
{
for (i = 0; i < p; i++)
sha3->s[i] ^= Load64BitBigEndian(data + 8 * i);
sha3->s[i] ^= Load64Unaligned(data + 8 * i);
BlockSha3(sha3->s);
len -= p * 8;
data += p * 8;