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72ef7c148c
Disables and removes dependency on OpenSSL. Many features don't work and the set of crypto options is greatly restricted. This will only work on system with native arc4random or /dev/urandom. Considered highly experimental for now.
97 lines
3.0 KiB
C
97 lines
3.0 KiB
C
/* $Id: openssl-compat.h,v 1.31 2014/08/29 18:18:29 djm Exp $ */
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/*
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* Copyright (c) 2005 Darren Tucker <dtucker@zip.com.au>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef _OPENSSL_COMPAT_H
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#define _OPENSSL_COMPAT_H
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#include "includes.h"
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#ifdef WITH_OPENSSL
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#include <openssl/opensslv.h>
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#include <openssl/evp.h>
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#include <openssl/rsa.h>
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#include <openssl/dsa.h>
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int ssh_compatible_openssl(long, long);
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#if (OPENSSL_VERSION_NUMBER <= 0x0090805fL)
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# error OpenSSL 0.9.8f or greater is required
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#endif
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#if OPENSSL_VERSION_NUMBER < 0x10000001L
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# define LIBCRYPTO_EVP_INL_TYPE unsigned int
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#else
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# define LIBCRYPTO_EVP_INL_TYPE size_t
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#endif
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#ifndef OPENSSL_RSA_MAX_MODULUS_BITS
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# define OPENSSL_RSA_MAX_MODULUS_BITS 16384
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#endif
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#ifndef OPENSSL_DSA_MAX_MODULUS_BITS
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# define OPENSSL_DSA_MAX_MODULUS_BITS 10000
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#endif
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#ifndef OPENSSL_HAVE_EVPCTR
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# define EVP_aes_128_ctr evp_aes_128_ctr
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# define EVP_aes_192_ctr evp_aes_128_ctr
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# define EVP_aes_256_ctr evp_aes_128_ctr
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const EVP_CIPHER *evp_aes_128_ctr(void);
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void ssh_aes_ctr_iv(EVP_CIPHER_CTX *, int, u_char *, size_t);
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#endif
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/* Avoid some #ifdef. Code that uses these is unreachable without GCM */
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#if !defined(OPENSSL_HAVE_EVPGCM) && !defined(EVP_CTRL_GCM_SET_IV_FIXED)
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# define EVP_CTRL_GCM_SET_IV_FIXED -1
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# define EVP_CTRL_GCM_IV_GEN -1
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# define EVP_CTRL_GCM_SET_TAG -1
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# define EVP_CTRL_GCM_GET_TAG -1
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#endif
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/* Replace missing EVP_CIPHER_CTX_ctrl() with something that returns failure */
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#ifndef HAVE_EVP_CIPHER_CTX_CTRL
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# ifdef OPENSSL_HAVE_EVPGCM
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# error AES-GCM enabled without EVP_CIPHER_CTX_ctrl /* shouldn't happen */
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# else
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# define EVP_CIPHER_CTX_ctrl(a,b,c,d) (0)
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# endif
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#endif
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/*
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* We overload some of the OpenSSL crypto functions with ssh_* equivalents
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* to automatically handle OpenSSL engine initialisation.
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*
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* In order for the compat library to call the real functions, it must
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* define SSH_DONT_OVERLOAD_OPENSSL_FUNCS before including this file and
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* implement the ssh_* equivalents.
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*/
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#ifndef SSH_DONT_OVERLOAD_OPENSSL_FUNCS
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# ifdef USE_OPENSSL_ENGINE
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# ifdef OpenSSL_add_all_algorithms
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# undef OpenSSL_add_all_algorithms
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# endif
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# define OpenSSL_add_all_algorithms() ssh_OpenSSL_add_all_algorithms()
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# endif
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void ssh_OpenSSL_add_all_algorithms(void);
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#endif /* SSH_DONT_OVERLOAD_OPENSSL_FUNCS */
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#endif /* WITH_OPENSSL */
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#endif /* _OPENSSL_COMPAT_H */
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