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void
OFSalsa20_8Core(uint32_t buffer[16])
{
uint32_t tmp[16];
for (uint_fast8_t i = 0; i < 16; i++)
tmp[i] = OF_BSWAP32_IF_BE(buffer[i]);
tmp[i] = OFToLittleEndian32(buffer[i]);
for (uint_fast8_t i = 0; i < 8; i += 2) {
tmp[ 4] ^= OF_ROL(tmp[ 0] + tmp[12], 7);
tmp[ 8] ^= OF_ROL(tmp[ 4] + tmp[ 0], 9);
tmp[12] ^= OF_ROL(tmp[ 8] + tmp[ 4], 13);
tmp[ 0] ^= OF_ROL(tmp[12] + tmp[ 8], 18);
tmp[ 9] ^= OF_ROL(tmp[ 5] + tmp[ 1], 7);
tmp[13] ^= OF_ROL(tmp[ 9] + tmp[ 5], 9);
tmp[ 1] ^= OF_ROL(tmp[13] + tmp[ 9], 13);
tmp[ 5] ^= OF_ROL(tmp[ 1] + tmp[13], 18);
tmp[14] ^= OF_ROL(tmp[10] + tmp[ 6], 7);
tmp[ 2] ^= OF_ROL(tmp[14] + tmp[10], 9);
tmp[ 6] ^= OF_ROL(tmp[ 2] + tmp[14], 13);
tmp[10] ^= OF_ROL(tmp[ 6] + tmp[ 2], 18);
tmp[ 3] ^= OF_ROL(tmp[15] + tmp[11], 7);
tmp[ 7] ^= OF_ROL(tmp[ 3] + tmp[15], 9);
tmp[11] ^= OF_ROL(tmp[ 7] + tmp[ 3], 13);
tmp[15] ^= OF_ROL(tmp[11] + tmp[ 7], 18);
tmp[ 1] ^= OF_ROL(tmp[ 0] + tmp[ 3], 7);
tmp[ 2] ^= OF_ROL(tmp[ 1] + tmp[ 0], 9);
tmp[ 3] ^= OF_ROL(tmp[ 2] + tmp[ 1], 13);
tmp[ 0] ^= OF_ROL(tmp[ 3] + tmp[ 2], 18);
tmp[ 6] ^= OF_ROL(tmp[ 5] + tmp[ 4], 7);
tmp[ 7] ^= OF_ROL(tmp[ 6] + tmp[ 5], 9);
tmp[ 4] ^= OF_ROL(tmp[ 7] + tmp[ 6], 13);
tmp[ 5] ^= OF_ROL(tmp[ 4] + tmp[ 7], 18);
tmp[11] ^= OF_ROL(tmp[10] + tmp[ 9], 7);
tmp[ 8] ^= OF_ROL(tmp[11] + tmp[10], 9);
tmp[ 9] ^= OF_ROL(tmp[ 8] + tmp[11], 13);
tmp[10] ^= OF_ROL(tmp[ 9] + tmp[ 8], 18);
tmp[12] ^= OF_ROL(tmp[15] + tmp[14], 7);
tmp[13] ^= OF_ROL(tmp[12] + tmp[15], 9);
tmp[14] ^= OF_ROL(tmp[13] + tmp[12], 13);
tmp[15] ^= OF_ROL(tmp[14] + tmp[13], 18);
tmp[ 4] ^= OFRotateLeft(tmp[ 0] + tmp[12], 7);
tmp[ 8] ^= OFRotateLeft(tmp[ 4] + tmp[ 0], 9);
tmp[12] ^= OFRotateLeft(tmp[ 8] + tmp[ 4], 13);
tmp[ 0] ^= OFRotateLeft(tmp[12] + tmp[ 8], 18);
tmp[ 9] ^= OFRotateLeft(tmp[ 5] + tmp[ 1], 7);
tmp[13] ^= OFRotateLeft(tmp[ 9] + tmp[ 5], 9);
tmp[ 1] ^= OFRotateLeft(tmp[13] + tmp[ 9], 13);
tmp[ 5] ^= OFRotateLeft(tmp[ 1] + tmp[13], 18);
tmp[14] ^= OFRotateLeft(tmp[10] + tmp[ 6], 7);
tmp[ 2] ^= OFRotateLeft(tmp[14] + tmp[10], 9);
tmp[ 6] ^= OFRotateLeft(tmp[ 2] + tmp[14], 13);
tmp[10] ^= OFRotateLeft(tmp[ 6] + tmp[ 2], 18);
tmp[ 3] ^= OFRotateLeft(tmp[15] + tmp[11], 7);
tmp[ 7] ^= OFRotateLeft(tmp[ 3] + tmp[15], 9);
tmp[11] ^= OFRotateLeft(tmp[ 7] + tmp[ 3], 13);
tmp[15] ^= OFRotateLeft(tmp[11] + tmp[ 7], 18);
tmp[ 1] ^= OFRotateLeft(tmp[ 0] + tmp[ 3], 7);
tmp[ 2] ^= OFRotateLeft(tmp[ 1] + tmp[ 0], 9);
tmp[ 3] ^= OFRotateLeft(tmp[ 2] + tmp[ 1], 13);
tmp[ 0] ^= OFRotateLeft(tmp[ 3] + tmp[ 2], 18);
tmp[ 6] ^= OFRotateLeft(tmp[ 5] + tmp[ 4], 7);
tmp[ 7] ^= OFRotateLeft(tmp[ 6] + tmp[ 5], 9);
tmp[ 4] ^= OFRotateLeft(tmp[ 7] + tmp[ 6], 13);
tmp[ 5] ^= OFRotateLeft(tmp[ 4] + tmp[ 7], 18);
tmp[11] ^= OFRotateLeft(tmp[10] + tmp[ 9], 7);
tmp[ 8] ^= OFRotateLeft(tmp[11] + tmp[10], 9);
tmp[ 9] ^= OFRotateLeft(tmp[ 8] + tmp[11], 13);
tmp[10] ^= OFRotateLeft(tmp[ 9] + tmp[ 8], 18);
tmp[12] ^= OFRotateLeft(tmp[15] + tmp[14], 7);
tmp[13] ^= OFRotateLeft(tmp[12] + tmp[15], 9);
tmp[14] ^= OFRotateLeft(tmp[13] + tmp[12], 13);
tmp[15] ^= OFRotateLeft(tmp[14] + tmp[13], 18);
}
for (uint_fast8_t i = 0; i < 16; i++)
buffer[i] = OF_BSWAP32_IF_BE(OF_BSWAP32_IF_BE(buffer[i]) +
buffer[i] = OFToLittleEndian32(OFFromLittleEndian32(buffer[i]) +
tmp[i]);
of_explicit_memset(tmp, 0, sizeof(tmp));
OFZeroMemory(tmp, sizeof(tmp));
}
void
OFScryptBlockMix(uint32_t *output, const uint32_t *input, size_t blockSize)
{
uint32_t tmp[16];
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/*
* Even indices are stored in the first half and odd ones in
* the second.
*/
memcpy(output + ((i / 2) + (i & 1) * blockSize) * 16, tmp, 64);
}
of_explicit_memset(tmp, 0, sizeof(tmp));
OFZeroMemory(tmp, sizeof(tmp));
}
void
OFScryptROMix(uint32_t *buffer, size_t blockSize, size_t costFactor,
uint32_t *tmp)
{
/* Check defined here and executed in OFScrypt() */
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