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