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