openssl-compat.h revision 262566
1/* $Id: openssl-compat.h,v 1.25 2014/01/17 06:32:31 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 < 0x10000001L 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 62const EVP_CIPHER *evp_rijndael(void); 63void ssh_rijndael_iv(EVP_CIPHER_CTX *, int, u_char *, u_int); 64#endif 65 66#ifndef OPENSSL_HAVE_EVPCTR 67#define EVP_aes_128_ctr evp_aes_128_ctr 68#define EVP_aes_192_ctr evp_aes_128_ctr 69#define EVP_aes_256_ctr evp_aes_128_ctr 70const EVP_CIPHER *evp_aes_128_ctr(void); 71void ssh_aes_ctr_iv(EVP_CIPHER_CTX *, int, u_char *, size_t); 72#endif 73 74/* Avoid some #ifdef. Code that uses these is unreachable without GCM */ 75#if !defined(OPENSSL_HAVE_EVPGCM) && !defined(EVP_CTRL_GCM_SET_IV_FIXED) 76# define EVP_CTRL_GCM_SET_IV_FIXED -1 77# define EVP_CTRL_GCM_IV_GEN -1 78# define EVP_CTRL_GCM_SET_TAG -1 79# define EVP_CTRL_GCM_GET_TAG -1 80#endif 81 82/* Replace missing EVP_CIPHER_CTX_ctrl() with something that returns failure */ 83#ifndef HAVE_EVP_CIPHER_CTX_CTRL 84# ifdef OPENSSL_HAVE_EVPGCM 85# error AES-GCM enabled without EVP_CIPHER_CTX_ctrl /* shouldn't happen */ 86# else 87# define EVP_CIPHER_CTX_ctrl(a,b,c,d) (0) 88# endif 89#endif 90 91#if OPENSSL_VERSION_NUMBER < 0x00907000L 92#define EVP_X_STATE(evp) &(evp).c 93#define EVP_X_STATE_LEN(evp) sizeof((evp).c) 94#else 95#define EVP_X_STATE(evp) (evp).cipher_data 96#define EVP_X_STATE_LEN(evp) (evp).cipher->ctx_size 97#endif 98 99/* OpenSSL 0.9.8e returns cipher key len not context key len */ 100#if (OPENSSL_VERSION_NUMBER == 0x0090805fL) 101# define EVP_CIPHER_CTX_key_length(c) ((c)->key_len) 102#endif 103 104#ifndef HAVE_RSA_GET_DEFAULT_METHOD 105RSA_METHOD *RSA_get_default_method(void); 106#endif 107 108/* 109 * We overload some of the OpenSSL crypto functions with ssh_* equivalents 110 * which cater for older and/or less featureful OpenSSL version. 111 * 112 * In order for the compat library to call the real functions, it must 113 * define SSH_DONT_OVERLOAD_OPENSSL_FUNCS before including this file and 114 * implement the ssh_* equivalents. 115 */ 116#ifndef SSH_DONT_OVERLOAD_OPENSSL_FUNCS 117 118# ifdef SSH_OLD_EVP 119# ifdef EVP_Cipher 120# undef EVP_Cipher 121# endif 122# define EVP_CipherInit(a,b,c,d,e) ssh_EVP_CipherInit((a),(b),(c),(d),(e)) 123# define EVP_Cipher(a,b,c,d) ssh_EVP_Cipher((a),(b),(c),(d)) 124# define EVP_CIPHER_CTX_cleanup(a) ssh_EVP_CIPHER_CTX_cleanup((a)) 125# endif /* SSH_OLD_EVP */ 126 127# ifdef OPENSSL_EVP_DIGESTUPDATE_VOID 128# define EVP_DigestUpdate(a,b,c) ssh_EVP_DigestUpdate((a),(b),(c)) 129# endif 130 131# ifdef USE_OPENSSL_ENGINE 132# ifdef OpenSSL_add_all_algorithms 133# undef OpenSSL_add_all_algorithms 134# endif 135# define OpenSSL_add_all_algorithms() ssh_OpenSSL_add_all_algorithms() 136# endif 137 138# ifndef HAVE_BN_IS_PRIME_EX 139int BN_is_prime_ex(const BIGNUM *, int, BN_CTX *, void *); 140# endif 141 142# ifndef HAVE_DSA_GENERATE_PARAMETERS_EX 143int DSA_generate_parameters_ex(DSA *, int, const unsigned char *, int, int *, 144 unsigned long *, void *); 145# endif 146 147# ifndef HAVE_RSA_GENERATE_KEY_EX 148int RSA_generate_key_ex(RSA *, int, BIGNUM *, void *); 149# endif 150 151# ifndef HAVE_EVP_DIGESTINIT_EX 152int EVP_DigestInit_ex(EVP_MD_CTX *, const EVP_MD *, void *); 153# endif 154 155# ifndef HAVE_EVP_DISESTFINAL_EX 156int EVP_DigestFinal_ex(EVP_MD_CTX *, unsigned char *, unsigned int *); 157# endif 158 159int ssh_EVP_CipherInit(EVP_CIPHER_CTX *, const EVP_CIPHER *, unsigned char *, 160 unsigned char *, int); 161int ssh_EVP_Cipher(EVP_CIPHER_CTX *, char *, char *, int); 162int ssh_EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *); 163void ssh_OpenSSL_add_all_algorithms(void); 164 165# ifndef HAVE_HMAC_CTX_INIT 166# define HMAC_CTX_init(a) 167# endif 168 169# ifndef HAVE_EVP_MD_CTX_INIT 170# define EVP_MD_CTX_init(a) 171# endif 172 173# ifndef HAVE_EVP_MD_CTX_CLEANUP 174# define EVP_MD_CTX_cleanup(a) 175# endif 176 177#endif /* SSH_DONT_OVERLOAD_OPENSSL_FUNCS */ 178 179