/* ==================================================================== * Copyright (c) 2001 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. * ==================================================================== * */#include <openssl/opensslconf.h>#ifndef OPENSSL_NO_AES#include <openssl/evp.h>#include <openssl/err.h>#include <string.h>#include <assert.h>#include <openssl/aes.h>#include "evp_locl.h"static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,					const unsigned char *iv, int enc);typedef struct	{	AES_KEY ks;	} EVP_AES_KEY;#define data(ctx)	EVP_C_DATA(EVP_AES_KEY,ctx)IMPLEMENT_BLOCK_CIPHER(aes_128, ks, AES, EVP_AES_KEY,		       NID_aes_128, 16, 16, 16, 128,		       EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_DEFAULT_ASN1,		       aes_init_key,		       NULL, NULL, NULL, NULL)IMPLEMENT_BLOCK_CIPHER(aes_192, ks, AES, EVP_AES_KEY,		       NID_aes_192, 16, 24, 16, 128,		       EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_DEFAULT_ASN1,		       aes_init_key,		       NULL, NULL, NULL, NULL)IMPLEMENT_BLOCK_CIPHER(aes_256, ks, AES, EVP_AES_KEY,		       NID_aes_256, 16, 32, 16, 128,		       EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_DEFAULT_ASN1,		       aes_init_key,		       NULL, NULL, NULL, NULL)#define IMPLEMENT_AES_CFBR(ksize,cbits,flags)	IMPLEMENT_CFBR(aes,AES,EVP_AES_KEY,ks,ksize,cbits,16,flags)IMPLEMENT_AES_CFBR(128,1,EVP_CIPH_FLAG_FIPS)IMPLEMENT_AES_CFBR(192,1,EVP_CIPH_FLAG_FIPS)IMPLEMENT_AES_CFBR(256,1,EVP_CIPH_FLAG_FIPS)IMPLEMENT_AES_CFBR(128,8,EVP_CIPH_FLAG_FIPS)IMPLEMENT_AES_CFBR(192,8,EVP_CIPH_FLAG_FIPS)IMPLEMENT_AES_CFBR(256,8,EVP_CIPH_FLAG_FIPS)static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,		   const unsigned char *iv, int enc)	{	int ret;	if ((ctx->cipher->flags & EVP_CIPH_MODE) == EVP_CIPH_CFB_MODE	    || (ctx->cipher->flags & EVP_CIPH_MODE) == EVP_CIPH_OFB_MODE	    || enc) 		ret=AES_set_encrypt_key(key, ctx->key_len * 8, ctx->cipher_data);	else		ret=AES_set_decrypt_key(key, ctx->key_len * 8, ctx->cipher_data);	if(ret < 0)		{		EVPerr(EVP_F_AES_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);		return 0;		}	return 1;	}#endif