crypto/openssh/cipher-aesctr.h

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