1 /* $Id: openssl-compat.h,v 1.15 2010/05/12 07:50:02 djm 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 #include <openssl/rsa.h> 22 #include <openssl/dsa.h> 23 24 /* Only in 0.9.8 */ 25 #ifndef OPENSSL_DSA_MAX_MODULUS_BITS 26 # define OPENSSL_DSA_MAX_MODULUS_BITS 10000 27 #endif 28 #ifndef OPENSSL_RSA_MAX_MODULUS_BITS 29 # define OPENSSL_RSA_MAX_MODULUS_BITS 16384 30 #endif 31 32 /* OPENSSL_free() is Free() in versions before OpenSSL 0.9.6 */ 33 #if !defined(OPENSSL_VERSION_NUMBER) || (OPENSSL_VERSION_NUMBER < 0x0090600f) 34 # define OPENSSL_free(x) Free(x) 35 #endif 36 37 #if OPENSSL_VERSION_NUMBER < 0x00906000L 38 # define SSH_OLD_EVP 39 # define EVP_CIPHER_CTX_get_app_data(e) ((e)->app_data) 40 #endif 41 42 #if (OPENSSL_VERSION_NUMBER < 0x00907000L) || defined(OPENSSL_LOBOTOMISED_AES) 43 # define USE_BUILTIN_RIJNDAEL 44 #endif 45 46 #ifdef USE_BUILTIN_RIJNDAEL 47 # include "rijndael.h" 48 # define AES_KEY rijndael_ctx 49 # define AES_BLOCK_SIZE 16 50 # define AES_encrypt(a, b, c) rijndael_encrypt(c, a, b) 51 # define AES_set_encrypt_key(a, b, c) rijndael_set_key(c, (char *)a, b, 1) 52 # define EVP_aes_128_cbc evp_rijndael 53 # define EVP_aes_192_cbc evp_rijndael 54 # define EVP_aes_256_cbc evp_rijndael 55 extern const EVP_CIPHER *evp_rijndael(void); 56 extern void ssh_rijndael_iv(EVP_CIPHER_CTX *, int, u_char *, u_int); 57 #endif 58 59 #if !defined(EVP_CTRL_SET_ACSS_MODE) 60 # if (OPENSSL_VERSION_NUMBER >= 0x00907000L) 61 # define USE_CIPHER_ACSS 1 62 extern const EVP_CIPHER *evp_acss(void); 63 # define EVP_acss evp_acss 64 # else 65 # define EVP_acss NULL 66 # endif 67 #endif 68 69 /* OpenSSL 0.9.8e returns cipher key len not context key len */ 70 #if (OPENSSL_VERSION_NUMBER == 0x0090805fL) 71 # define EVP_CIPHER_CTX_key_length(c) ((c)->key_len) 72 #endif 73 74 /* 75 * We overload some of the OpenSSL crypto functions with ssh_* equivalents 76 * which cater for older and/or less featureful OpenSSL version. 77 * 78 * In order for the compat library to call the real functions, it must 79 * define SSH_DONT_OVERLOAD_OPENSSL_FUNCS before including this file and 80 * implement the ssh_* equivalents. 81 */ 82 #ifndef SSH_DONT_OVERLOAD_OPENSSL_FUNCS 83 84 # ifdef SSH_OLD_EVP 85 # ifdef EVP_Cipher 86 # undef EVP_Cipher 87 # endif 88 # define EVP_CipherInit(a,b,c,d,e) ssh_EVP_CipherInit((a),(b),(c),(d),(e)) 89 # define EVP_Cipher(a,b,c,d) ssh_EVP_Cipher((a),(b),(c),(d)) 90 # define EVP_CIPHER_CTX_cleanup(a) ssh_EVP_CIPHER_CTX_cleanup((a)) 91 # endif /* SSH_OLD_EVP */ 92 93 # ifdef OPENSSL_EVP_DIGESTUPDATE_VOID 94 # define EVP_DigestUpdate(a,b,c) ssh_EVP_DigestUpdate((a),(b),(c)) 95 # endif 96 97 # ifdef USE_OPENSSL_ENGINE 98 # ifdef SSLeay_add_all_algorithms 99 # undef SSLeay_add_all_algorithms 100 # endif 101 # define SSLeay_add_all_algorithms() ssh_SSLeay_add_all_algorithms() 102 # endif 103 104 int ssh_EVP_CipherInit(EVP_CIPHER_CTX *, const EVP_CIPHER *, unsigned char *, 105 unsigned char *, int); 106 int ssh_EVP_Cipher(EVP_CIPHER_CTX *, char *, char *, int); 107 int ssh_EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *); 108 void ssh_SSLeay_add_all_algorithms(void); 109 #endif /* SSH_DONT_OVERLOAD_OPENSSL_FUNCS */ 110 111