1 /* $Id: openssl-compat.h,v 1.26 2014/02/13 05:38:33 dtucker 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/opensslv.h>
21 #include <openssl/evp.h>
22 #include <openssl/rsa.h>
23 #include <openssl/dsa.h>
26 #ifndef OPENSSL_DSA_MAX_MODULUS_BITS
27 # define OPENSSL_DSA_MAX_MODULUS_BITS 10000
29 #ifndef OPENSSL_RSA_MAX_MODULUS_BITS
30 # define OPENSSL_RSA_MAX_MODULUS_BITS 16384
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)
38 #if OPENSSL_VERSION_NUMBER < 0x00906000L
40 # define EVP_CIPHER_CTX_get_app_data(e) ((e)->app_data)
43 #if OPENSSL_VERSION_NUMBER < 0x10000001L
44 # define LIBCRYPTO_EVP_INL_TYPE unsigned int
46 # define LIBCRYPTO_EVP_INL_TYPE size_t
49 #if (OPENSSL_VERSION_NUMBER < 0x00907000L) || defined(OPENSSL_LOBOTOMISED_AES)
50 # define USE_BUILTIN_RIJNDAEL
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 const EVP_CIPHER *evp_rijndael(void);
63 void ssh_rijndael_iv(EVP_CIPHER_CTX *, int, u_char *, u_int);
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
70 const EVP_CIPHER *evp_aes_128_ctr(void);
71 void ssh_aes_ctr_iv(EVP_CIPHER_CTX *, int, u_char *, size_t);
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
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 */
87 # define EVP_CIPHER_CTX_ctrl(a,b,c,d) (0)
91 #if OPENSSL_VERSION_NUMBER < 0x00907000L
92 #define EVP_X_STATE(evp) &(evp).c
93 #define EVP_X_STATE_LEN(evp) sizeof((evp).c)
95 #define EVP_X_STATE(evp) (evp).cipher_data
96 #define EVP_X_STATE_LEN(evp) (evp).cipher->ctx_size
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)
104 #ifndef HAVE_RSA_GET_DEFAULT_METHOD
105 RSA_METHOD *RSA_get_default_method(void);
109 * We overload some of the OpenSSL crypto functions with ssh_* equivalents
110 * which cater for older and/or less featureful OpenSSL version.
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.
116 #ifndef SSH_DONT_OVERLOAD_OPENSSL_FUNCS
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 */
127 # ifdef OPENSSL_EVP_DIGESTUPDATE_VOID
128 # define EVP_DigestUpdate(a,b,c) ssh_EVP_DigestUpdate((a),(b),(c))
131 # ifdef USE_OPENSSL_ENGINE
132 # ifdef OpenSSL_add_all_algorithms
133 # undef OpenSSL_add_all_algorithms
135 # define OpenSSL_add_all_algorithms() ssh_OpenSSL_add_all_algorithms()
138 # ifndef HAVE_BN_IS_PRIME_EX
139 int BN_is_prime_ex(const BIGNUM *, int, BN_CTX *, void *);
142 # ifndef HAVE_DSA_GENERATE_PARAMETERS_EX
143 int DSA_generate_parameters_ex(DSA *, int, const unsigned char *, int, int *,
144 unsigned long *, void *);
147 # ifndef HAVE_RSA_GENERATE_KEY_EX
148 int RSA_generate_key_ex(RSA *, int, BIGNUM *, void *);
151 # ifndef HAVE_EVP_DIGESTINIT_EX
152 int EVP_DigestInit_ex(EVP_MD_CTX *, const EVP_MD *, void *);
155 # ifndef HAVE_EVP_DISESTFINAL_EX
156 int EVP_DigestFinal_ex(EVP_MD_CTX *, unsigned char *, unsigned int *);
159 # ifndef EVP_MD_CTX_COPY_EX
160 int EVP_MD_CTX_copy_ex(EVP_MD_CTX *, const EVP_MD_CTX *);
163 int ssh_EVP_CipherInit(EVP_CIPHER_CTX *, const EVP_CIPHER *, unsigned char *,
164 unsigned char *, int);
165 int ssh_EVP_Cipher(EVP_CIPHER_CTX *, char *, char *, int);
166 int ssh_EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *);
167 void ssh_OpenSSL_add_all_algorithms(void);
169 # ifndef HAVE_HMAC_CTX_INIT
170 # define HMAC_CTX_init(a)
173 # ifndef HAVE_EVP_MD_CTX_INIT
174 # define EVP_MD_CTX_init(a)
177 # ifndef HAVE_EVP_MD_CTX_CLEANUP
178 # define EVP_MD_CTX_cleanup(a)
181 #endif /* SSH_DONT_OVERLOAD_OPENSSL_FUNCS */