Adam Langley | d059297 | 2015-03-30 14:49:51 -0700 | [diff] [blame] | 1 | /* $Id: openssl-compat.h,v 1.31 2014/08/29 18:18:29 djm Exp $ */ |
Greg Hartman | bd77cf7 | 2015-02-25 13:21:06 -0800 | [diff] [blame] | 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 | |
Adam Langley | d059297 | 2015-03-30 14:49:51 -0700 | [diff] [blame] | 19 | #ifndef _OPENSSL_COMPAT_H |
| 20 | #define _OPENSSL_COMPAT_H |
| 21 | |
Greg Hartman | bd77cf7 | 2015-02-25 13:21:06 -0800 | [diff] [blame] | 22 | #include "includes.h" |
Adam Langley | d059297 | 2015-03-30 14:49:51 -0700 | [diff] [blame] | 23 | #ifdef WITH_OPENSSL |
| 24 | |
Greg Hartman | bd77cf7 | 2015-02-25 13:21:06 -0800 | [diff] [blame] | 25 | #include <openssl/opensslv.h> |
| 26 | #include <openssl/evp.h> |
| 27 | #include <openssl/rsa.h> |
| 28 | #include <openssl/dsa.h> |
| 29 | |
Adam Langley | d059297 | 2015-03-30 14:49:51 -0700 | [diff] [blame] | 30 | int ssh_compatible_openssl(long, long); |
| 31 | |
| 32 | #if (OPENSSL_VERSION_NUMBER <= 0x0090805fL) |
| 33 | # error OpenSSL 0.9.8f or greater is required |
Greg Hartman | bd77cf7 | 2015-02-25 13:21:06 -0800 | [diff] [blame] | 34 | #endif |
| 35 | |
Adam Langley | d059297 | 2015-03-30 14:49:51 -0700 | [diff] [blame] | 36 | #if OPENSSL_VERSION_NUMBER < 0x10000001L |
Greg Hartman | bd77cf7 | 2015-02-25 13:21:06 -0800 | [diff] [blame] | 37 | # define LIBCRYPTO_EVP_INL_TYPE unsigned int |
| 38 | #else |
| 39 | # define LIBCRYPTO_EVP_INL_TYPE size_t |
| 40 | #endif |
| 41 | |
Adam Langley | d059297 | 2015-03-30 14:49:51 -0700 | [diff] [blame] | 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 |
Greg Hartman | bd77cf7 | 2015-02-25 13:21:06 -0800 | [diff] [blame] | 47 | #endif |
| 48 | |
Adam Langley | d059297 | 2015-03-30 14:49:51 -0700 | [diff] [blame] | 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); |
Greg Hartman | bd77cf7 | 2015-02-25 13:21:06 -0800 | [diff] [blame] | 55 | #endif |
| 56 | |
Adam Langley | d059297 | 2015-03-30 14:49:51 -0700 | [diff] [blame] | 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 */ |
Greg Hartman | bd77cf7 | 2015-02-25 13:21:06 -0800 | [diff] [blame] | 69 | # else |
Adam Langley | d059297 | 2015-03-30 14:49:51 -0700 | [diff] [blame] | 70 | # define EVP_CIPHER_CTX_ctrl(a,b,c,d) (0) |
Greg Hartman | bd77cf7 | 2015-02-25 13:21:06 -0800 | [diff] [blame] | 71 | # endif |
| 72 | #endif |
| 73 | |
Greg Hartman | bd77cf7 | 2015-02-25 13:21:06 -0800 | [diff] [blame] | 74 | /* |
| 75 | * We overload some of the OpenSSL crypto functions with ssh_* equivalents |
Adam Langley | d059297 | 2015-03-30 14:49:51 -0700 | [diff] [blame] | 76 | * to automatically handle OpenSSL engine initialisation. |
Greg Hartman | bd77cf7 | 2015-02-25 13:21:06 -0800 | [diff] [blame] | 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 | |
Greg Hartman | bd77cf7 | 2015-02-25 13:21:06 -0800 | [diff] [blame] | 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 | |
Greg Hartman | bd77cf7 | 2015-02-25 13:21:06 -0800 | [diff] [blame] | 91 | void ssh_OpenSSL_add_all_algorithms(void); |
Adam Langley | d059297 | 2015-03-30 14:49:51 -0700 | [diff] [blame] | 92 | |
Greg Hartman | bd77cf7 | 2015-02-25 13:21:06 -0800 | [diff] [blame] | 93 | #endif /* SSH_DONT_OVERLOAD_OPENSSL_FUNCS */ |
| 94 | |
Adam Langley | d059297 | 2015-03-30 14:49:51 -0700 | [diff] [blame] | 95 | #endif /* WITH_OPENSSL */ |
| 96 | #endif /* _OPENSSL_COMPAT_H */ |