mirror of git://anongit.mindrot.org/openssh.git
185 lines
5.6 KiB
C
185 lines
5.6 KiB
C
/* $Id: openssl-compat.h,v 1.27 2014/06/17 13:06:08 dtucker 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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#include "includes.h"
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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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/* Only in 0.9.8 */
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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_RSA_MAX_MODULUS_BITS
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# define OPENSSL_RSA_MAX_MODULUS_BITS 16384
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#endif
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/* OPENSSL_free() is Free() in versions before OpenSSL 0.9.6 */
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#if !defined(OPENSSL_VERSION_NUMBER) || (OPENSSL_VERSION_NUMBER < 0x0090600f)
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# define OPENSSL_free(x) Free(x)
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#endif
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#if OPENSSL_VERSION_NUMBER < 0x00906000L
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# define SSH_OLD_EVP
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# define EVP_CIPHER_CTX_get_app_data(e) ((e)->app_data)
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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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#if (OPENSSL_VERSION_NUMBER < 0x00907000L) || defined(OPENSSL_LOBOTOMISED_AES)
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# define USE_BUILTIN_RIJNDAEL
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#endif
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#ifdef USE_BUILTIN_RIJNDAEL
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# include "rijndael.h"
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# define AES_KEY rijndael_ctx
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# define AES_BLOCK_SIZE 16
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# define AES_encrypt(a, b, c) rijndael_encrypt(c, a, b)
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# define AES_set_encrypt_key(a, b, c) rijndael_set_key(c, (char *)a, b, 1)
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# define EVP_aes_128_cbc evp_rijndael
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# define EVP_aes_192_cbc evp_rijndael
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# define EVP_aes_256_cbc evp_rijndael
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const EVP_CIPHER *evp_rijndael(void);
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void ssh_rijndael_iv(EVP_CIPHER_CTX *, int, u_char *, u_int);
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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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#if OPENSSL_VERSION_NUMBER < 0x00907000L
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#define EVP_X_STATE(evp) &(evp).c
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#define EVP_X_STATE_LEN(evp) sizeof((evp).c)
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#else
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#define EVP_X_STATE(evp) (evp).cipher_data
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#define EVP_X_STATE_LEN(evp) (evp).cipher->ctx_size
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#endif
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/* OpenSSL 0.9.8e returns cipher key len not context key len */
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#if (OPENSSL_VERSION_NUMBER == 0x0090805fL)
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# define EVP_CIPHER_CTX_key_length(c) ((c)->key_len)
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#endif
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#ifndef HAVE_RSA_GET_DEFAULT_METHOD
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RSA_METHOD *RSA_get_default_method(void);
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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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* which cater for older and/or less featureful OpenSSL version.
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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 SSH_OLD_EVP
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# ifdef EVP_Cipher
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# undef EVP_Cipher
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# endif
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# define EVP_CipherInit(a,b,c,d,e) ssh_EVP_CipherInit((a),(b),(c),(d),(e))
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# define EVP_Cipher(a,b,c,d) ssh_EVP_Cipher((a),(b),(c),(d))
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# define EVP_CIPHER_CTX_cleanup(a) ssh_EVP_CIPHER_CTX_cleanup((a))
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# endif /* SSH_OLD_EVP */
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# ifdef OPENSSL_EVP_DIGESTUPDATE_VOID
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# define EVP_DigestUpdate(a,b,c) ssh_EVP_DigestUpdate((a),(b),(c))
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# endif
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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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# ifndef HAVE_BN_IS_PRIME_EX
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int BN_is_prime_ex(const BIGNUM *, int, BN_CTX *, void *);
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# endif
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# ifndef HAVE_DSA_GENERATE_PARAMETERS_EX
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int DSA_generate_parameters_ex(DSA *, int, const unsigned char *, int, int *,
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unsigned long *, void *);
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# endif
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# ifndef HAVE_RSA_GENERATE_KEY_EX
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int RSA_generate_key_ex(RSA *, int, BIGNUM *, void *);
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# endif
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# ifndef HAVE_EVP_DIGESTINIT_EX
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int EVP_DigestInit_ex(EVP_MD_CTX *, const EVP_MD *, void *);
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# endif
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# ifndef HAVE_EVP_DISESTFINAL_EX
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int EVP_DigestFinal_ex(EVP_MD_CTX *, unsigned char *, unsigned int *);
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# endif
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# ifndef EVP_MD_CTX_COPY_EX
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int EVP_MD_CTX_copy_ex(EVP_MD_CTX *, const EVP_MD_CTX *);
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# endif
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int ssh_EVP_CipherInit(EVP_CIPHER_CTX *, const EVP_CIPHER *, unsigned char *,
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unsigned char *, int);
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int ssh_EVP_Cipher(EVP_CIPHER_CTX *, char *, char *, int);
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int ssh_EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *);
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void ssh_OpenSSL_add_all_algorithms(void);
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# ifndef HAVE_HMAC_CTX_INIT
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# define HMAC_CTX_init(a)
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# endif
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# ifndef HAVE_EVP_MD_CTX_INIT
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# define EVP_MD_CTX_init(a)
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# endif
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# ifndef HAVE_EVP_MD_CTX_CLEANUP
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# define EVP_MD_CTX_cleanup(a)
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# endif
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#endif /* SSH_DONT_OVERLOAD_OPENSSL_FUNCS */
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