openbsd-compat/openssl-compat.c

   1 /* $Id: openssl-compat.c,v 1.12 2010/12/04 21:46:05 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
  21 #include <stdarg.h>
  22 #include <string.h>
  23
  24 #ifdef USE_OPENSSL_ENGINE
  25 # include <openssl/engine.h>
  26 # include <openssl/conf.h>
  27 #endif
  28
  29 #include "log.h"
  30
  31 #define SSH_DONT_OVERLOAD_OPENSSL_FUNCS
  32 #include "openssl-compat.h"
  33
  34 #ifdef SSH_OLD_EVP
  35 int
  36 ssh_EVP_CipherInit(EVP_CIPHER_CTX *evp, const EVP_CIPHER *type,
  37     unsigned char *key, unsigned char *iv, int enc)
  38 {
  39         EVP_CipherInit(evp, type, key, iv, enc);
  40         return 1;
  41 }
  42
  43 int
  44 ssh_EVP_Cipher(EVP_CIPHER_CTX *evp, char *dst, char *src, int len)
  45 {
  46         EVP_Cipher(evp, dst, src, len);
  47         return 1;
  48 }
  49
  50 int
  51 ssh_EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *evp)
  52 {
  53         EVP_CIPHER_CTX_cleanup(evp);
  54         return 1;
  55 }
  56 #endif
  57
  58 #ifdef OPENSSL_EVP_DIGESTUPDATE_VOID
  59 int
  60 ssh_EVP_DigestUpdate(EVP_MD_CTX *ctx, const void *d, unsigned int cnt)
  61 {
  62         EVP_DigestUpdate(ctx, d, cnt);
  63         return 1;
  64 }
  65 #endif
  66
  67 #ifndef HAVE_BN_IS_PRIME_EX
  68 int
  69 BN_is_prime_ex(const BIGNUM *p, int nchecks, BN_CTX *ctx, void *cb)
  70 {
  71         if (cb != NULL)
  72                 fatal("%s: callback args not supported", __func__);
  73         return BN_is_prime(p, nchecks, NULL, ctx, NULL);
  74 }
  75 #endif
  76
  77 #ifndef HAVE_RSA_GENERATE_KEY_EX
  78 int
  79 RSA_generate_key_ex(RSA *rsa, int bits, BIGNUM *bn_e, void *cb)
  80 {
  81         RSA *new_rsa, tmp_rsa;
  82         unsigned long e;
  83
  84         if (cb != NULL)
  85                 fatal("%s: callback args not supported", __func__);
  86         e = BN_get_word(bn_e);
  87         if (e == 0xffffffffL)
  88                 fatal("%s: value of e too large", __func__);
  89         new_rsa = RSA_generate_key(bits, e, NULL, NULL);
  90         if (new_rsa == NULL)
  91                 return 0;
  92         /* swap rsa/new_rsa then free new_rsa */
  93         tmp_rsa = *rsa;
  94         *rsa = *new_rsa;
  95         *new_rsa = tmp_rsa;
  96         RSA_free(new_rsa);
  97         return 1;
  98 }
  99 #endif
 100
 101 #ifndef HAVE_DSA_GENERATE_PARAMETERS_EX
 102 int
 103 DSA_generate_parameters_ex(DSA *dsa, int bits, const unsigned char *seed,
 104     int seed_len, int *counter_ret, unsigned long *h_ret, void *cb)
 105 {
 106         DSA *new_dsa, tmp_dsa;
 107
 108         if (cb != NULL)
 109                 fatal("%s: callback args not supported", __func__);
 110         new_dsa = DSA_generate_parameters(bits, (unsigned char *)seed, seed_len,
 111             counter_ret, h_ret, NULL, NULL);
 112         if (new_dsa == NULL)
 113                 return 0;
 114         /* swap dsa/new_dsa then free new_dsa */
 115         tmp_dsa = *dsa;
 116         *dsa = *new_dsa;
 117         *new_dsa = tmp_dsa;
 118         DSA_free(new_dsa);
 119         return 1;
 120 }
 121 #endif
 122
 123 #ifdef  USE_OPENSSL_ENGINE
 124 void
 125 ssh_SSLeay_add_all_algorithms(void)
 126 {
 127         SSLeay_add_all_algorithms();
 128
 129         /* Enable use of crypto hardware */
 130         ENGINE_load_builtin_engines();
 131         ENGINE_register_all_complete();
 132         OPENSSL_config(NULL);
 133 }
 134 #endif