1 /* $Id: openssl-compat.h,v 1.12 2008/02/28 08:22:04 dtucker Exp $ */ 2 3 /* 4 * Copyright (c) 2005 Darren Tucker <dtucker@zip.com.au> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER 15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include "includes.h" 20 #include <openssl/evp.h> 21 22 /* OPENSSL_free() is Free() in versions before OpenSSL 0.9.6 */ 23 #if !defined(OPENSSL_VERSION_NUMBER) || (OPENSSL_VERSION_NUMBER < 0x0090600f) 24 # define OPENSSL_free(x) Free(x) 25 #endif 26 27 #if OPENSSL_VERSION_NUMBER < 0x00906000L 28 # define SSH_OLD_EVP 29 # define EVP_CIPHER_CTX_get_app_data(e) ((e)->app_data) 30 #endif 31 32 #if (OPENSSL_VERSION_NUMBER < 0x00907000L) || defined(OPENSSL_LOBOTOMISED_AES) 33 # define USE_BUILTIN_RIJNDAEL 34 #endif 35 36 #ifdef USE_BUILTIN_RIJNDAEL 37 # include "rijndael.h" 38 # define AES_KEY rijndael_ctx 39 # define AES_BLOCK_SIZE 16 40 # define AES_encrypt(a, b, c) rijndael_encrypt(c, a, b) 41 # define AES_set_encrypt_key(a, b, c) rijndael_set_key(c, (char *)a, b, 1) 42 # define EVP_aes_128_cbc evp_rijndael 43 # define EVP_aes_192_cbc evp_rijndael 44 # define EVP_aes_256_cbc evp_rijndael 45 extern const EVP_CIPHER *evp_rijndael(void); 46 extern void ssh_rijndael_iv(EVP_CIPHER_CTX *, int, u_char *, u_int); 47 #endif 48 49 #if !defined(EVP_CTRL_SET_ACSS_MODE) 50 # if (OPENSSL_VERSION_NUMBER >= 0x00907000L) 51 # define USE_CIPHER_ACSS 1 52 extern const EVP_CIPHER *evp_acss(void); 53 # define EVP_acss evp_acss 54 # else 55 # define EVP_acss NULL 56 # endif 57 #endif 58 59 /* OpenSSL 0.9.8e returns cipher key len not context key len */ 60 #if (OPENSSL_VERSION_NUMBER == 0x0090805fL) 61 # define EVP_CIPHER_CTX_key_length(c) ((c)->key_len) 62 #endif 63 64 /* 65 * We overload some of the OpenSSL crypto functions with ssh_* equivalents 66 * which cater for older and/or less featureful OpenSSL version. 67 * 68 * In order for the compat library to call the real functions, it must 69 * define SSH_DONT_OVERLOAD_OPENSSL_FUNCS before including this file and 70 * implement the ssh_* equivalents. 71 */ 72 #ifndef SSH_DONT_OVERLOAD_OPENSSL_FUNCS 73 74 # ifdef SSH_OLD_EVP 75 # ifdef EVP_Cipher 76 # undef EVP_Cipher 77 # endif 78 # define EVP_CipherInit(a,b,c,d,e) ssh_EVP_CipherInit((a),(b),(c),(d),(e)) 79 # define EVP_Cipher(a,b,c,d) ssh_EVP_Cipher((a),(b),(c),(d)) 80 # define EVP_CIPHER_CTX_cleanup(a) ssh_EVP_CIPHER_CTX_cleanup((a)) 81 # endif /* SSH_OLD_EVP */ 82 83 # ifdef USE_OPENSSL_ENGINE 84 # ifdef SSLeay_add_all_algorithms 85 # undef SSLeay_add_all_algorithms 86 # endif 87 # define SSLeay_add_all_algorithms() ssh_SSLeay_add_all_algorithms() 88 # endif 89 90 int ssh_EVP_CipherInit(EVP_CIPHER_CTX *, const EVP_CIPHER *, unsigned char *, 91 unsigned char *, int); 92 int ssh_EVP_Cipher(EVP_CIPHER_CTX *, char *, char *, int); 93 int ssh_EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *); 94 void ssh_SSLeay_add_all_algorithms(void); 95 #endif /* SSH_DONT_OVERLOAD_OPENSSL_FUNCS */ 96