mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-31 00:17:44 +00:00
81 lines
2.1 KiB
C
81 lines
2.1 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
|
/*
|
||
|
|
* AEGIS common definitions
|
||
|
|
*
|
||
|
|
* Copyright (c) 2018 Ondrej Mosnacek <omosnacek@gmail.com>
|
||
|
|
* Copyright (c) 2018 Red Hat, Inc. All rights reserved.
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify it
|
||
|
|
* under the terms of the GNU General Public License as published by the Free
|
||
|
|
* Software Foundation; either version 2 of the License, or (at your option)
|
||
|
|
* any later version.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _CRYPTO_AEGIS_H
|
||
|
|
#define _CRYPTO_AEGIS_H
|
||
|
|
|
||
|
|
#include <crypto/aes.h>
|
||
|
|
#include <linux/types.h>
|
||
|
|
|
||
|
|
#define AEGIS_BLOCK_SIZE 16
|
||
|
|
|
||
|
|
union aegis_block {
|
||
|
|
__le64 words64[AEGIS_BLOCK_SIZE / sizeof(__le64)];
|
||
|
|
u32 words32[AEGIS_BLOCK_SIZE / sizeof(u32)];
|
||
|
|
u8 bytes[AEGIS_BLOCK_SIZE];
|
||
|
|
};
|
||
|
|
|
||
|
|
#define AEGIS_BLOCK_ALIGN (__alignof__(union aegis_block))
|
||
|
|
#define AEGIS_ALIGNED(p) IS_ALIGNED((uintptr_t)p, AEGIS_BLOCK_ALIGN)
|
||
|
|
|
||
|
|
static const union aegis_block crypto_aegis_const[2] = {
|
||
|
|
{ .words64 = {
|
||
|
|
cpu_to_le64(U64_C(0x0d08050302010100)),
|
||
|
|
cpu_to_le64(U64_C(0x6279e99059372215)),
|
||
|
|
} },
|
||
|
|
{ .words64 = {
|
||
|
|
cpu_to_le64(U64_C(0xf12fc26d55183ddb)),
|
||
|
|
cpu_to_le64(U64_C(0xdd28b57342311120)),
|
||
|
|
} },
|
||
|
|
};
|
||
|
|
|
||
|
|
static void crypto_aegis_block_xor(union aegis_block *dst,
|
||
|
|
const union aegis_block *src)
|
||
|
|
{
|
||
|
|
dst->words64[0] ^= src->words64[0];
|
||
|
|
dst->words64[1] ^= src->words64[1];
|
||
|
|
}
|
||
|
|
|
||
|
|
static void crypto_aegis_block_and(union aegis_block *dst,
|
||
|
|
const union aegis_block *src)
|
||
|
|
{
|
||
|
|
dst->words64[0] &= src->words64[0];
|
||
|
|
dst->words64[1] &= src->words64[1];
|
||
|
|
}
|
||
|
|
|
||
|
|
static void crypto_aegis_aesenc(union aegis_block *dst,
|
||
|
|
const union aegis_block *src,
|
||
|
|
const union aegis_block *key)
|
||
|
|
{
|
||
|
|
u32 *d = dst->words32;
|
||
|
|
const u8 *s = src->bytes;
|
||
|
|
const u32 *k = key->words32;
|
||
|
|
const u32 *t0 = crypto_ft_tab[0];
|
||
|
|
const u32 *t1 = crypto_ft_tab[1];
|
||
|
|
const u32 *t2 = crypto_ft_tab[2];
|
||
|
|
const u32 *t3 = crypto_ft_tab[3];
|
||
|
|
u32 d0, d1, d2, d3;
|
||
|
|
|
||
|
|
d0 = t0[s[ 0]] ^ t1[s[ 5]] ^ t2[s[10]] ^ t3[s[15]] ^ k[0];
|
||
|
|
d1 = t0[s[ 4]] ^ t1[s[ 9]] ^ t2[s[14]] ^ t3[s[ 3]] ^ k[1];
|
||
|
|
d2 = t0[s[ 8]] ^ t1[s[13]] ^ t2[s[ 2]] ^ t3[s[ 7]] ^ k[2];
|
||
|
|
d3 = t0[s[12]] ^ t1[s[ 1]] ^ t2[s[ 6]] ^ t3[s[11]] ^ k[3];
|
||
|
|
|
||
|
|
d[0] = d0;
|
||
|
|
d[1] = d1;
|
||
|
|
d[2] = d2;
|
||
|
|
d[3] = d3;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* _CRYPTO_AEGIS_H */
|