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/*
* Copyright (c) 2005 Darren Tucker <dtucker@zip.com.au>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _OPENSSL_COMPAT_H
#define _OPENSSL_COMPAT_H
#include "includes.h"
#ifdef WITH_OPENSSL
#include <openssl/opensslv.h>
#include <openssl/crypto.h>
#include <openssl/evp.h>
#include <openssl/bn.h>
#include <openssl/rsa.h>
#ifdef OPENSSL_HAS_ECC
#include <openssl/ecdsa.h>
#endif
#include <openssl/dh.h>
int ssh_compatible_openssl(long, long);
void ssh_libcrypto_init(void);
#if (OPENSSL_VERSION_NUMBER < 0x10100000L)
# error OpenSSL 1.1.0 or greater is required
#endif
#ifdef LIBRESSL_VERSION_NUMBER
# if LIBRESSL_VERSION_NUMBER < 0x3010000fL
# error LibreSSL 3.1.0 or greater is required
# endif
#endif
#ifndef OPENSSL_RSA_MAX_MODULUS_BITS
# define OPENSSL_RSA_MAX_MODULUS_BITS 16384
#endif
#ifdef LIBRESSL_VERSION_NUMBER
# if LIBRESSL_VERSION_NUMBER < 0x3010000fL
# define HAVE_BROKEN_CHACHA20
# endif
#endif
#if defined(OPENSSL_IS_BORINGSSL) || defined(OPENSSL_IS_AWSLC)
/*
* BoringSSL and AWS-LC (rightly) got rid of the BN_FLG_CONSTTIME flag, along with
* the entire BN_set_flags() interface.
* https://boringssl.googlesource.com/boringssl/+/0a211dfe9
*/
# define BN_set_flags(a, b)
#endif
/* LibreSSL <3.4 has the _GFp variants but not the equivalent modern ones. */
#ifndef HAVE_EC_POINT_GET_AFFINE_COORDINATES
# ifdef HAVE_EC_POINT_GET_AFFINE_COORDINATES_GFP
# define EC_POINT_get_affine_coordinates(a, b, c, d, e) \
(EC_POINT_get_affine_coordinates_GFp(a, b, c, d, e))
# endif
#endif
#ifndef HAVE_EC_POINT_SET_AFFINE_COORDINATES
# ifdef HAVE_EC_POINT_SET_AFFINE_COORDINATES_GFP
# define EC_POINT_set_affine_coordinates(a, b, c, d, e) \
(EC_POINT_set_affine_coordinates_GFp(a, b, c, d, e))
# endif
#endif
#ifndef HAVE_EVP_CIPHER_CTX_GET_IV
# ifdef HAVE_EVP_CIPHER_CTX_GET_UPDATED_IV
# define EVP_CIPHER_CTX_get_iv EVP_CIPHER_CTX_get_updated_iv
# else /* HAVE_EVP_CIPHER_CTX_GET_UPDATED_IV */
int EVP_CIPHER_CTX_get_iv(const EVP_CIPHER_CTX *ctx,
unsigned char *iv, size_t len);
# endif /* HAVE_EVP_CIPHER_CTX_GET_UPDATED_IV */
#endif /* HAVE_EVP_CIPHER_CTX_GET_IV */
#ifndef HAVE_EVP_CIPHER_CTX_SET_IV
int EVP_CIPHER_CTX_set_iv(EVP_CIPHER_CTX *ctx,
const unsigned char *iv, size_t len);
#endif /* HAVE_EVP_CIPHER_CTX_SET_IV */
#ifndef HAVE_EVP_DIGESTSIGN
int EVP_DigestSign(EVP_MD_CTX *, unsigned char *, size_t *,
const unsigned char *, size_t);
#endif
#ifndef HAVE_EVP_DIGESTVERIFY
int EVP_DigestVerify(EVP_MD_CTX *, const unsigned char *, size_t,
const unsigned char *, size_t);
#endif
#endif /* WITH_OPENSSL */
#endif /* _OPENSSL_COMPAT_H */
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