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extremecoders-re/borkedsalsasnip.c

Created April 22, 2016 19:29
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borkedsalsasnip.c
static uint16_t rotl(uint16_t value, uint16_t shift)
{
return (value << shift) | (value >> (32 - shift));
}
static void s20_quarterround(uint16_t *y0, uint16_t *y1, uint16_t *y2, uint16_t *y3)
{
*y1 = *y1 ^ rotl(*y0 + *y3, 7);
*y2 = *y2 ^ rotl(*y1 + *y0, 9);
*y3 = *y3 ^ rotl(*y2 + *y1, 13);
*y0 = *y0 ^ rotl(*y3 + *y2, 18);
}
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