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 (at) 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 62 extern const EVP_CIPHER *evp_rijndael(void); 63 extern 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 69 extern 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 82 RSA_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 116 int BN_is_prime_ex(const BIGNUM *, int, BN_CTX *, void *); 117 # endif 118 119 # ifndef HAVE_DSA_GENERATE_PARAMETERS_EX 120 int 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 125 int RSA_generate_key_ex(RSA *, int, BIGNUM *, void *); 126 # endif 127 128 int ssh_EVP_CipherInit(EVP_CIPHER_CTX *, const EVP_CIPHER *, unsigned char *, 129 unsigned char *, int); 130 int ssh_EVP_Cipher(EVP_CIPHER_CTX *, char *, char *, int); 131 int ssh_EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *); 132 void ssh_OpenSSL_add_all_algorithms(void); 133 #endif /* SSH_DONT_OVERLOAD_OPENSSL_FUNCS */ 134 135
