40 lines
1.3 KiB
C
40 lines
1.3 KiB
C
/*
|
|
* Copyright (c) 2024 Lucas Gabriel Vuotto <lucas@lgv5.net>
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
|
|
#include "lilcrypto.h"
|
|
|
|
|
|
#define POLY1305_CHUNK 16
|
|
#define POLY1305_TAGLEN_WORDS (LC_POLY1305_TAGLEN / sizeof(uint32_t))
|
|
|
|
|
|
struct poly1305_ctx {
|
|
uint32_t h0, h1, h2, h3, h4;
|
|
uint32_t r0, r1, r2, r3, r4;
|
|
uint32_t x1, x2, x3, x4;
|
|
uint32_t s0, s1, s2, s3;
|
|
size_t mlen;
|
|
uint8_t m[POLY1305_CHUNK];
|
|
};
|
|
|
|
|
|
void poly1305_block(struct poly1305_ctx *, uint32_t);
|
|
void poly1305_reduce(struct poly1305_ctx *,
|
|
uint32_t [POLY1305_TAGLEN_WORDS]);
|