| /* ==================================================================== |
| * 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 |
