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      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 
     26 typedef 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 
     32 void aesctr_keysetup(aesctr_ctx *x,const u8 *k,u32 kbits,u32 ivbits);
     33 void aesctr_ivsetup(aesctr_ctx *x,const u8 *iv);
     34 void aesctr_encrypt_bytes(aesctr_ctx *x,const u8 *m,u8 *c,u32 bytes);
     35 
     36 #endif
     37