cipher-aesctr.h revision 323134 
1/* $OpenBSD: cipher-aesctr.h,v 1.1 2014/04/29 15:39:33 markus Exp $ */
2/*
3 * Copyright (c) 2014 Markus Friedl
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18#ifndef OPENSSH_AESCTR_H
19#define OPENSSH_AESCTR_H
20
21#include "rijndael.h"
22
23#define AES_BLOCK_SIZE 16
24
25typedef struct aesctr_ctx {
26	int	rounds;				/* keylen-dependent #rounds */
27	u32	ek[4*(AES_MAXROUNDS + 1)];	/* encrypt key schedule */
28	u8	ctr[AES_BLOCK_SIZE];		/* counter */
29} aesctr_ctx;
30
31void aesctr_keysetup(aesctr_ctx *x,const u8 *k,u32 kbits,u32 ivbits);
32void aesctr_ivsetup(aesctr_ctx *x,const u8 *iv);
33void aesctr_encrypt_bytes(aesctr_ctx *x,const u8 *m,u8 *c,u32 bytes);
34
35#endif
36