1 /* $Id: openssl-compat.h,v 1.31 2014/08/29 18:18:29 djm 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 #ifndef _OPENSSL_COMPAT_H 20 #define _OPENSSL_COMPAT_H 21 22 #include "includes.h" 23 #ifdef WITH_OPENSSL 24 25 #include <openssl/opensslv.h> 26 #include <openssl/evp.h> 27 #include <openssl/rsa.h> 28 #include <openssl/dsa.h> 29 30 int ssh_compatible_openssl(long, long); 31 32 #if (OPENSSL_VERSION_NUMBER <= 0x0090805fL) 33 # error OpenSSL 0.9.8f or greater is required 34 #endif 35 36 #if OPENSSL_VERSION_NUMBER < 0x10000001L 37 # define LIBCRYPTO_EVP_INL_TYPE unsigned int 38 #else 39 # define LIBCRYPTO_EVP_INL_TYPE size_t 40 #endif 41 42 #ifndef OPENSSL_RSA_MAX_MODULUS_BITS 43 # define OPENSSL_RSA_MAX_MODULUS_BITS 16384 44 #endif 45 #ifndef OPENSSL_DSA_MAX_MODULUS_BITS 46 # define OPENSSL_DSA_MAX_MODULUS_BITS 10000 47 #endif 48 49 #ifndef OPENSSL_HAVE_EVPCTR 50 # define EVP_aes_128_ctr evp_aes_128_ctr 51 # define EVP_aes_192_ctr evp_aes_128_ctr 52 # define EVP_aes_256_ctr evp_aes_128_ctr 53 const EVP_CIPHER *evp_aes_128_ctr(void); 54 void ssh_aes_ctr_iv(EVP_CIPHER_CTX *, int, u_char *, size_t); 55 #endif 56 57 /* Avoid some #ifdef. Code that uses these is unreachable without GCM */ 58 #if !defined(OPENSSL_HAVE_EVPGCM) && !defined(EVP_CTRL_GCM_SET_IV_FIXED) 59 # define EVP_CTRL_GCM_SET_IV_FIXED -1 60 # define EVP_CTRL_GCM_IV_GEN -1 61 # define EVP_CTRL_GCM_SET_TAG -1 62 # define EVP_CTRL_GCM_GET_TAG -1 63 #endif 64 65 /* Replace missing EVP_CIPHER_CTX_ctrl() with something that returns failure */ 66 #ifndef HAVE_EVP_CIPHER_CTX_CTRL 67 # ifdef OPENSSL_HAVE_EVPGCM 68 # error AES-GCM enabled without EVP_CIPHER_CTX_ctrl /* shouldn't happen */ 69 # else 70 # define EVP_CIPHER_CTX_ctrl(a,b,c,d) (0) 71 # endif 72 #endif 73 74 /* 75 * We overload some of the OpenSSL crypto functions with ssh_* equivalents 76 * to automatically handle OpenSSL engine initialisation. 77 * 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. 81 */ 82 #ifndef SSH_DONT_OVERLOAD_OPENSSL_FUNCS 83 84 # ifdef USE_OPENSSL_ENGINE 85 # ifdef OpenSSL_add_all_algorithms 86 # undef OpenSSL_add_all_algorithms 87 # endif 88 # define OpenSSL_add_all_algorithms() ssh_OpenSSL_add_all_algorithms() 89 # endif 90 91 void ssh_OpenSSL_add_all_algorithms(void); 92 93 #endif /* SSH_DONT_OVERLOAD_OPENSSL_FUNCS */ 94 95 #endif /* WITH_OPENSSL */ 96 #endif /* _OPENSSL_COMPAT_H */ 97