1*0Sstevel@tonic-gate /* ==================================================================== 2*0Sstevel@tonic-gate * Copyright (c) 2001 The OpenSSL Project. All rights reserved. 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * Redistribution and use in source and binary forms, with or without 5*0Sstevel@tonic-gate * modification, are permitted provided that the following conditions 6*0Sstevel@tonic-gate * are met: 7*0Sstevel@tonic-gate * 8*0Sstevel@tonic-gate * 1. Redistributions of source code must retain the above copyright 9*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer. 10*0Sstevel@tonic-gate * 11*0Sstevel@tonic-gate * 2. Redistributions in binary form must reproduce the above copyright 12*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer in 13*0Sstevel@tonic-gate * the documentation and/or other materials provided with the 14*0Sstevel@tonic-gate * distribution. 15*0Sstevel@tonic-gate * 16*0Sstevel@tonic-gate * 3. All advertising materials mentioning features or use of this 17*0Sstevel@tonic-gate * software must display the following acknowledgment: 18*0Sstevel@tonic-gate * "This product includes software developed by the OpenSSL Project 19*0Sstevel@tonic-gate * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 20*0Sstevel@tonic-gate * 21*0Sstevel@tonic-gate * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 22*0Sstevel@tonic-gate * endorse or promote products derived from this software without 23*0Sstevel@tonic-gate * prior written permission. For written permission, please contact 24*0Sstevel@tonic-gate * openssl-core@openssl.org. 25*0Sstevel@tonic-gate * 26*0Sstevel@tonic-gate * 5. Products derived from this software may not be called "OpenSSL" 27*0Sstevel@tonic-gate * nor may "OpenSSL" appear in their names without prior written 28*0Sstevel@tonic-gate * permission of the OpenSSL Project. 29*0Sstevel@tonic-gate * 30*0Sstevel@tonic-gate * 6. Redistributions of any form whatsoever must retain the following 31*0Sstevel@tonic-gate * acknowledgment: 32*0Sstevel@tonic-gate * "This product includes software developed by the OpenSSL Project 33*0Sstevel@tonic-gate * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 34*0Sstevel@tonic-gate * 35*0Sstevel@tonic-gate * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 36*0Sstevel@tonic-gate * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 37*0Sstevel@tonic-gate * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 38*0Sstevel@tonic-gate * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 39*0Sstevel@tonic-gate * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 40*0Sstevel@tonic-gate * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 41*0Sstevel@tonic-gate * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 42*0Sstevel@tonic-gate * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 43*0Sstevel@tonic-gate * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 44*0Sstevel@tonic-gate * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 45*0Sstevel@tonic-gate * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 46*0Sstevel@tonic-gate * OF THE POSSIBILITY OF SUCH DAMAGE. 47*0Sstevel@tonic-gate * ==================================================================== 48*0Sstevel@tonic-gate * 49*0Sstevel@tonic-gate */ 50*0Sstevel@tonic-gate 51*0Sstevel@tonic-gate #ifndef OPENSSL_NO_AES 52*0Sstevel@tonic-gate #include <openssl/evp.h> 53*0Sstevel@tonic-gate #include <openssl/err.h> 54*0Sstevel@tonic-gate #include <string.h> 55*0Sstevel@tonic-gate #include <openssl/aes.h> 56*0Sstevel@tonic-gate #include "evp_locl.h" 57*0Sstevel@tonic-gate 58*0Sstevel@tonic-gate static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 59*0Sstevel@tonic-gate const unsigned char *iv, int enc); 60*0Sstevel@tonic-gate 61*0Sstevel@tonic-gate typedef struct 62*0Sstevel@tonic-gate { 63*0Sstevel@tonic-gate AES_KEY ks; 64*0Sstevel@tonic-gate } EVP_AES_KEY; 65*0Sstevel@tonic-gate 66*0Sstevel@tonic-gate #define data(ctx) EVP_C_DATA(EVP_AES_KEY,ctx) 67*0Sstevel@tonic-gate 68*0Sstevel@tonic-gate IMPLEMENT_BLOCK_CIPHER(aes_128, ks, AES, EVP_AES_KEY, 69*0Sstevel@tonic-gate NID_aes_128, 16, 16, 16, 128, 70*0Sstevel@tonic-gate 0, aes_init_key, NULL, 71*0Sstevel@tonic-gate EVP_CIPHER_set_asn1_iv, 72*0Sstevel@tonic-gate EVP_CIPHER_get_asn1_iv, 73*0Sstevel@tonic-gate NULL) 74*0Sstevel@tonic-gate #ifdef CRYPTO_UNLIMITED 75*0Sstevel@tonic-gate IMPLEMENT_BLOCK_CIPHER(aes_192, ks, AES, EVP_AES_KEY, 76*0Sstevel@tonic-gate NID_aes_192, 16, 24, 16, 128, 77*0Sstevel@tonic-gate 0, aes_init_key, NULL, 78*0Sstevel@tonic-gate EVP_CIPHER_set_asn1_iv, 79*0Sstevel@tonic-gate EVP_CIPHER_get_asn1_iv, 80*0Sstevel@tonic-gate NULL) 81*0Sstevel@tonic-gate IMPLEMENT_BLOCK_CIPHER(aes_256, ks, AES, EVP_AES_KEY, 82*0Sstevel@tonic-gate NID_aes_256, 16, 32, 16, 128, 83*0Sstevel@tonic-gate 0, aes_init_key, NULL, 84*0Sstevel@tonic-gate EVP_CIPHER_set_asn1_iv, 85*0Sstevel@tonic-gate EVP_CIPHER_get_asn1_iv, 86*0Sstevel@tonic-gate NULL) 87*0Sstevel@tonic-gate #endif /* CRYPTO_UNLIMITED */ 88*0Sstevel@tonic-gate 89*0Sstevel@tonic-gate static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 90*0Sstevel@tonic-gate const unsigned char *iv, int enc) { 91*0Sstevel@tonic-gate 92*0Sstevel@tonic-gate #ifndef CRYPTO_UNLIMITED 93*0Sstevel@tonic-gate if (ctx->key_len > 16) 94*0Sstevel@tonic-gate return 0; 95*0Sstevel@tonic-gate #endif /* CRYPTO_UNLIMITED */ 96*0Sstevel@tonic-gate if ((ctx->cipher->flags & EVP_CIPH_MODE) == EVP_CIPH_CFB_MODE 97*0Sstevel@tonic-gate || (ctx->cipher->flags & EVP_CIPH_MODE) == EVP_CIPH_OFB_MODE 98*0Sstevel@tonic-gate || enc) 99*0Sstevel@tonic-gate AES_set_encrypt_key(key, ctx->key_len * 8, ctx->cipher_data); 100*0Sstevel@tonic-gate else 101*0Sstevel@tonic-gate AES_set_decrypt_key(key, ctx->key_len * 8, ctx->cipher_data); 102*0Sstevel@tonic-gate 103*0Sstevel@tonic-gate return 1; 104*0Sstevel@tonic-gate } 105*0Sstevel@tonic-gate 106*0Sstevel@tonic-gate #endif 107