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Started from buttom go to the sky

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Raphaël 2024-04-28 19:59:01 +02:00
parent 96215449bd
commit f811e55dea
4781 changed files with 10121 additions and 1743 deletions
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68
stdme/src/hash/sip/sip_utils2.c Normal file
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* sip_utils2.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: maiboyer <maiboyer@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2023/12/11 14:29:03 by maiboyer #+# #+# */
/* Updated: 2023/12/27 16:52:17 by maiboyer ### ########.fr */
/* */
/* ************************************************************************** */
#include "me/hash/sip/sip_utils.h"
#include "me/num/usize.h"
void compress(t_sip_state *state)
{
state->v0 = state->v0 + state->v1;
state->v1 = usize_rotate_left(state->v1, 13);
state->v1 ^= state->v0;
state->v0 = usize_rotate_left(state->v0, 32);
state->v2 = state->v2 + state->v3;
state->v3 = usize_rotate_left(state->v3, 16);
state->v3 ^= state->v2;
state->v0 = state->v0 + state->v3;
state->v3 = usize_rotate_left(state->v3, 21);
state->v3 ^= state->v0;
state->v2 = state->v2 + state->v1;
state->v1 = usize_rotate_left(state->v1, 17);
state->v1 ^= state->v2;
state->v2 = usize_rotate_left(state->v2, 32);
}
t_sip_state create_state_with_key(t_u64 k0, t_u64 k1)
{
t_sip_state state;
state = (t_sip_state){.v0 = 0, .v1 = 0, .v2 = 0, .v3 = 0};
state.v0 = k0 ^ 0x736f6d6570736575;
state.v1 = k1 ^ 0x646f72616e646f6d;
state.v2 = k0 ^ 0x6c7967656e657261;
state.v3 = k1 ^ 0x7465646279746573;
return (state);
}
t_u64 sip13_reset_and_finish(t_sip13 *self)
{
t_sip_state state;
t_u64 b;
t_u64 ret;
state = self->state;
b = (((t_u64)self->length & 0xff) << 56) | self->tail;
state.v3 ^= b;
compress(&state);
state.v0 ^= b;
state.v2 ^= 0xff;
compress(&state);
compress(&state);
ret = (state.v0 ^ state.v1 ^ state.v2 ^ state.v3);
self->length = 0;
self->state.v0 = self->k0 ^ 0x736f6d6570736575;
self->state.v1 = self->k1 ^ 0x646f72616e646f6d;
self->state.v2 = self->k0 ^ 0x6c7967656e657261;
self->state.v3 = self->k1 ^ 0x7465646279746573;
self->ntail = 0;
return (ret);
}