1*36e94dc5SPeter Avalos /* $OpenBSD: cipher-aesctr.h,v 1.1 2014/04/29 15:39:33 markus Exp $ */ 2*36e94dc5SPeter Avalos /* 3*36e94dc5SPeter Avalos * Copyright (c) 2014 Markus Friedl 4*36e94dc5SPeter Avalos * 5*36e94dc5SPeter Avalos * Permission to use, copy, modify, and distribute this software for any 6*36e94dc5SPeter Avalos * purpose with or without fee is hereby granted, provided that the above 7*36e94dc5SPeter Avalos * copyright notice and this permission notice appear in all copies. 8*36e94dc5SPeter Avalos * 9*36e94dc5SPeter Avalos * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10*36e94dc5SPeter Avalos * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11*36e94dc5SPeter Avalos * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12*36e94dc5SPeter Avalos * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13*36e94dc5SPeter Avalos * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14*36e94dc5SPeter Avalos * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15*36e94dc5SPeter Avalos * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16*36e94dc5SPeter Avalos */ 17*36e94dc5SPeter Avalos 18*36e94dc5SPeter Avalos #ifndef OPENSSH_AESCTR_H 19*36e94dc5SPeter Avalos #define OPENSSH_AESCTR_H 20*36e94dc5SPeter Avalos 21*36e94dc5SPeter Avalos #include "rijndael.h" 22*36e94dc5SPeter Avalos 23*36e94dc5SPeter Avalos #define AES_BLOCK_SIZE 16 24*36e94dc5SPeter Avalos 25*36e94dc5SPeter Avalos typedef struct aesctr_ctx { 26*36e94dc5SPeter Avalos int rounds; /* keylen-dependent #rounds */ 27*36e94dc5SPeter Avalos u32 ek[4*(AES_MAXROUNDS + 1)]; /* encrypt key schedule */ 28*36e94dc5SPeter Avalos u8 ctr[AES_BLOCK_SIZE]; /* counter */ 29*36e94dc5SPeter Avalos } aesctr_ctx; 30*36e94dc5SPeter Avalos 31*36e94dc5SPeter Avalos void aesctr_keysetup(aesctr_ctx *x,const u8 *k,u32 kbits,u32 ivbits); 32*36e94dc5SPeter Avalos void aesctr_ivsetup(aesctr_ctx *x,const u8 *iv); 33*36e94dc5SPeter Avalos void aesctr_encrypt_bytes(aesctr_ctx *x,const u8 *m,u8 *c,u32 bytes); 34*36e94dc5SPeter Avalos 35*36e94dc5SPeter Avalos #endif 36