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/* $OpenBSD: aes.h,v 1.15 2023/07/31 05:04:06 tb Exp $ */
/* ====================================================================
* Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* openssl-core@openssl.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
*/
#ifndef HEADER_AES_H
#define HEADER_AES_H
#include <openssl/opensslconf.h>
#ifdef OPENSSL_NO_AES
#error AES is disabled.
#endif
#include <stddef.h>
#define AES_ENCRYPT 1
#define AES_DECRYPT 0
/* Because array size can't be a const in C, the following two are macros.
Both sizes are in bytes. */
#define AES_MAXNR 14
#define AES_BLOCK_SIZE 16
#ifdef __cplusplus
extern "C" {
#endif
/* This should be a hidden type, but EVP requires that the size be known */
struct aes_key_st {
unsigned int rd_key[4 *(AES_MAXNR + 1)];
int rounds;
};
typedef struct aes_key_st AES_KEY;
int AES_set_encrypt_key(const unsigned char *userKey, const int bits,
AES_KEY *key);
int AES_set_decrypt_key(const unsigned char *userKey, const int bits,
AES_KEY *key);
void AES_encrypt(const unsigned char *in, unsigned char *out,
const AES_KEY *key);
void AES_decrypt(const unsigned char *in, unsigned char *out,
const AES_KEY *key);
void AES_ecb_encrypt(const unsigned char *in, unsigned char *out,
const AES_KEY *key, const int enc);
void AES_cbc_encrypt(const unsigned char *in, unsigned char *out,
size_t length, const AES_KEY *key, unsigned char *ivec, const int enc);
void AES_cfb128_encrypt(const unsigned char *in, unsigned char *out,
size_t length, const AES_KEY *key, unsigned char *ivec, int *num,
const int enc);
void AES_cfb1_encrypt(const unsigned char *in, unsigned char *out,
size_t length, const AES_KEY *key, unsigned char *ivec, int *num,
const int enc);
void AES_cfb8_encrypt(const unsigned char *in, unsigned char *out,
size_t length, const AES_KEY *key, unsigned char *ivec, int *num,
const int enc);
void AES_ofb128_encrypt(const unsigned char *in, unsigned char *out,
size_t length, const AES_KEY *key, unsigned char *ivec, int *num);
void AES_ctr128_encrypt(const unsigned char *in, unsigned char *out,
size_t length, const AES_KEY *key, unsigned char ivec[AES_BLOCK_SIZE],
unsigned char ecount_buf[AES_BLOCK_SIZE], unsigned int *num);
/* NB: the IV is _two_ blocks long */
void AES_ige_encrypt(const unsigned char *in, unsigned char *out,
size_t length, const AES_KEY *key, unsigned char *ivec, const int enc);
int AES_wrap_key(AES_KEY *key, const unsigned char *iv, unsigned char *out,
const unsigned char *in, unsigned int inlen);
int AES_unwrap_key(AES_KEY *key, const unsigned char *iv, unsigned char *out,
const unsigned char *in, unsigned int inlen);
#ifdef __cplusplus
}
#endif
#endif /* !HEADER_AES_H */
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