1/* $Id: openssl-compat.h,v 1.19 2011/05/10 01:13:38 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/opensslv.h> 21#include <openssl/evp.h> 22#include <openssl/rsa.h> 23#include <openssl/dsa.h> 24 25/* Only in 0.9.8 */ 26#ifndef OPENSSL_DSA_MAX_MODULUS_BITS 27# define OPENSSL_DSA_MAX_MODULUS_BITS 10000 28#endif 29#ifndef OPENSSL_RSA_MAX_MODULUS_BITS 30# define OPENSSL_RSA_MAX_MODULUS_BITS 16384 31#endif 32 33/* OPENSSL_free() is Free() in versions before OpenSSL 0.9.6 */ 34#if !defined(OPENSSL_VERSION_NUMBER) || (OPENSSL_VERSION_NUMBER < 0x0090600f) 35# define OPENSSL_free(x) Free(x) 36#endif 37 38#if OPENSSL_VERSION_NUMBER < 0x00906000L 39# define SSH_OLD_EVP 40# define EVP_CIPHER_CTX_get_app_data(e) ((e)->app_data) 41#endif 42 43#if OPENSSL_VERSION_NUMBER < 0x1000000fL 44# define LIBCRYPTO_EVP_INL_TYPE unsigned int 45#else 46# define LIBCRYPTO_EVP_INL_TYPE size_t 47#endif 48 49#if (OPENSSL_VERSION_NUMBER < 0x00907000L) || defined(OPENSSL_LOBOTOMISED_AES) 50# define USE_BUILTIN_RIJNDAEL 51#endif 52 53#ifdef USE_BUILTIN_RIJNDAEL 54# include "rijndael.h" 55# define AES_KEY rijndael_ctx 56# define AES_BLOCK_SIZE 16 57# define AES_encrypt(a, b, c) rijndael_encrypt(c, a, b) 58# define AES_set_encrypt_key(a, b, c) rijndael_set_key(c, (char *)a, b, 1) 59# define EVP_aes_128_cbc evp_rijndael 60# define EVP_aes_192_cbc evp_rijndael 61# define EVP_aes_256_cbc evp_rijndael 62extern const EVP_CIPHER *evp_rijndael(void); 63extern void ssh_rijndael_iv(EVP_CIPHER_CTX *, int, u_char *, u_int); 64#endif 65 66#if !defined(EVP_CTRL_SET_ACSS_MODE) 67# if (OPENSSL_VERSION_NUMBER >= 0x00907000L) 68# define USE_CIPHER_ACSS 1 69extern const EVP_CIPHER *evp_acss(void); 70# define EVP_acss evp_acss 71# else 72# define EVP_acss NULL 73# endif 74#endif 75 76/* OpenSSL 0.9.8e returns cipher key len not context key len */ 77#if (OPENSSL_VERSION_NUMBER == 0x0090805fL) 78# define EVP_CIPHER_CTX_key_length(c) ((c)->key_len) 79#endif 80 81#ifndef HAVE_RSA_GET_DEFAULT_METHOD 82RSA_METHOD *RSA_get_default_method(void); 83#endif 84 85/* 86 * We overload some of the OpenSSL crypto functions with ssh_* equivalents 87 * which cater for older and/or less featureful OpenSSL version. 88 * 89 * In order for the compat library to call the real functions, it must 90 * define SSH_DONT_OVERLOAD_OPENSSL_FUNCS before including this file and 91 * implement the ssh_* equivalents. 92 */ 93#ifndef SSH_DONT_OVERLOAD_OPENSSL_FUNCS 94 95# ifdef SSH_OLD_EVP 96# ifdef EVP_Cipher 97# undef EVP_Cipher 98# endif 99# define EVP_CipherInit(a,b,c,d,e) ssh_EVP_CipherInit((a),(b),(c),(d),(e)) 100# define EVP_Cipher(a,b,c,d) ssh_EVP_Cipher((a),(b),(c),(d)) 101# define EVP_CIPHER_CTX_cleanup(a) ssh_EVP_CIPHER_CTX_cleanup((a)) 102# endif /* SSH_OLD_EVP */ 103 104# ifdef OPENSSL_EVP_DIGESTUPDATE_VOID 105# define EVP_DigestUpdate(a,b,c) ssh_EVP_DigestUpdate((a),(b),(c)) 106# endif 107 108# ifdef USE_OPENSSL_ENGINE 109# ifdef OpenSSL_add_all_algorithms 110# undef OpenSSL_add_all_algorithms 111# endif 112# define OpenSSL_add_all_algorithms() ssh_OpenSSL_add_all_algorithms() 113# endif 114 115# ifndef HAVE_BN_IS_PRIME_EX 116int BN_is_prime_ex(const BIGNUM *, int, BN_CTX *, void *); 117# endif 118 119# ifndef HAVE_DSA_GENERATE_PARAMETERS_EX 120int DSA_generate_parameters_ex(DSA *, int, const unsigned char *, int, int *, 121 unsigned long *, void *); 122# endif 123 124# ifndef HAVE_RSA_GENERATE_KEY_EX 125int RSA_generate_key_ex(RSA *, int, BIGNUM *, void *); 126# endif 127 128int ssh_EVP_CipherInit(EVP_CIPHER_CTX *, const EVP_CIPHER *, unsigned char *, 129 unsigned char *, int); 130int ssh_EVP_Cipher(EVP_CIPHER_CTX *, char *, char *, int); 131int ssh_EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *); 132void ssh_OpenSSL_add_all_algorithms(void); 133#endif /* SSH_DONT_OVERLOAD_OPENSSL_FUNCS */ 134 135