1 /* 2 * Copyright (c) 2005 Darren Tucker <dtucker@zip.com.au> 3 * 4 * Permission to use, copy, modify, and distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER 13 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 14 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17 #ifndef _OPENSSL_COMPAT_H 18 #define _OPENSSL_COMPAT_H 19 20 #include "includes.h" 21 #ifdef WITH_OPENSSL 22 23 #include <openssl/opensslv.h> 24 #include <openssl/evp.h> 25 #include <openssl/rsa.h> 26 #include <openssl/dsa.h> 27 28 int ssh_compatible_openssl(long, long); 29 30 #if (OPENSSL_VERSION_NUMBER <= 0x0090805fL) 31 # error OpenSSL 0.9.8f or greater is required 32 #endif 33 34 #if OPENSSL_VERSION_NUMBER < 0x10000001L 35 # define LIBCRYPTO_EVP_INL_TYPE unsigned int 36 #else 37 # define LIBCRYPTO_EVP_INL_TYPE size_t 38 #endif 39 40 #ifndef OPENSSL_RSA_MAX_MODULUS_BITS 41 # define OPENSSL_RSA_MAX_MODULUS_BITS 16384 42 #endif 43 #ifndef OPENSSL_DSA_MAX_MODULUS_BITS 44 # define OPENSSL_DSA_MAX_MODULUS_BITS 10000 45 #endif 46 47 #ifndef OPENSSL_HAVE_EVPCTR 48 # define EVP_aes_128_ctr evp_aes_128_ctr 49 # define EVP_aes_192_ctr evp_aes_128_ctr 50 # define EVP_aes_256_ctr evp_aes_128_ctr 51 const EVP_CIPHER *evp_aes_128_ctr(void); 52 void ssh_aes_ctr_iv(EVP_CIPHER_CTX *, int, u_char *, size_t); 53 #endif 54 55 /* Avoid some #ifdef. Code that uses these is unreachable without GCM */ 56 #if !defined(OPENSSL_HAVE_EVPGCM) && !defined(EVP_CTRL_GCM_SET_IV_FIXED) 57 # define EVP_CTRL_GCM_SET_IV_FIXED -1 58 # define EVP_CTRL_GCM_IV_GEN -1 59 # define EVP_CTRL_GCM_SET_TAG -1 60 # define EVP_CTRL_GCM_GET_TAG -1 61 #endif 62 63 /* Replace missing EVP_CIPHER_CTX_ctrl() with something that returns failure */ 64 #ifndef HAVE_EVP_CIPHER_CTX_CTRL 65 # ifdef OPENSSL_HAVE_EVPGCM 66 # error AES-GCM enabled without EVP_CIPHER_CTX_ctrl /* shouldn't happen */ 67 # else 68 # define EVP_CIPHER_CTX_ctrl(a,b,c,d) (0) 69 # endif 70 #endif 71 72 #if defined(HAVE_EVP_RIPEMD160) 73 # if defined(OPENSSL_NO_RIPEMD) || defined(OPENSSL_NO_RMD160) 74 # undef HAVE_EVP_RIPEMD160 75 # endif 76 #endif 77 78 /* 79 * We overload some of the OpenSSL crypto functions with ssh_* equivalents 80 * to automatically handle OpenSSL engine initialisation. 81 * 82 * In order for the compat library to call the real functions, it must 83 * define SSH_DONT_OVERLOAD_OPENSSL_FUNCS before including this file and 84 * implement the ssh_* equivalents. 85 */ 86 #ifndef SSH_DONT_OVERLOAD_OPENSSL_FUNCS 87 88 # ifdef USE_OPENSSL_ENGINE 89 # ifdef OpenSSL_add_all_algorithms 90 # undef OpenSSL_add_all_algorithms 91 # endif 92 # define OpenSSL_add_all_algorithms() ssh_OpenSSL_add_all_algorithms() 93 # endif 94 95 void ssh_OpenSSL_add_all_algorithms(void); 96 97 #endif /* SSH_DONT_OVERLOAD_OPENSSL_FUNCS */ 98 99 #endif /* WITH_OPENSSL */ 100 #endif /* _OPENSSL_COMPAT_H */ 101