1/* $NetBSD: cipher-aesctr.h,v 1.2 2018/04/06 18:59:00 christos Exp $ */
2/* $OpenBSD: cipher-aesctr.h,v 1.1 2014/04/29 15:39:33 markus Exp $ */
3/*
4 * Copyright (c) 2014 Markus Friedl
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19#ifndef OPENSSH_AESCTR_H
20#define OPENSSH_AESCTR_H
21
22#include "rijndael.h"
23
24#define AES_BLOCK_SIZE 16
25
26typedef struct aesctr_ctx {
27 int rounds; /* keylen-dependent #rounds */
28 u32 ek[4*(AES_MAXROUNDS + 1)]; /* encrypt key schedule */
29 u8 ctr[AES_BLOCK_SIZE]; /* counter */
30} aesctr_ctx;
31
32void aesctr_keysetup(aesctr_ctx *x,const u8 *k,u32 kbits,u32 ivbits);
33void aesctr_ivsetup(aesctr_ctx *x,const u8 *iv);
34void aesctr_encrypt_bytes(aesctr_ctx *x,const u8 *m,u8 *c,u32 bytes);
35
36#endif
37