1 /* $Id: openssl-compat.h,v 1.15 2010/05/12 07:50:02 djm Exp $ */
4 * Copyright (c) 2005 Darren Tucker <dtucker@zip.com.au>
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.
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.
20 #include <openssl/evp.h>
21 #include <openssl/rsa.h>
22 #include <openssl/dsa.h>
25 #ifndef OPENSSL_DSA_MAX_MODULUS_BITS
26 # define OPENSSL_DSA_MAX_MODULUS_BITS 10000
28 #ifndef OPENSSL_RSA_MAX_MODULUS_BITS
29 # define OPENSSL_RSA_MAX_MODULUS_BITS 16384
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)
37 #if OPENSSL_VERSION_NUMBER < 0x00906000L
39 # define EVP_CIPHER_CTX_get_app_data(e) ((e)->app_data)
42 #if (OPENSSL_VERSION_NUMBER < 0x00907000L) || defined(OPENSSL_LOBOTOMISED_AES)
43 # define USE_BUILTIN_RIJNDAEL
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);
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
65 # define EVP_acss NULL
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)
75 * We overload some of the OpenSSL crypto functions with ssh_* equivalents
76 * which cater for older and/or less featureful OpenSSL version.
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.
82 #ifndef SSH_DONT_OVERLOAD_OPENSSL_FUNCS
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 */
93 # ifdef OPENSSL_EVP_DIGESTUPDATE_VOID
94 # define EVP_DigestUpdate(a,b,c) ssh_EVP_DigestUpdate((a),(b),(c))
97 # ifdef USE_OPENSSL_ENGINE
98 # ifdef SSLeay_add_all_algorithms
99 # undef SSLeay_add_all_algorithms
101 # define SSLeay_add_all_algorithms() ssh_SSLeay_add_all_algorithms()
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 */