[gssapi-openssh.git] / openssh / openbsd-compat / openssl-compat.h

/* $Id$ */

/*
 * 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.
 */

#include "includes.h"
#include <openssl/evp.h>

/* OPENSSL_free() is Free() in versions before OpenSSL 0.9.6 */
#if !defined(OPENSSL_VERSION_NUMBER) || (OPENSSL_VERSION_NUMBER < 0x0090600f)
# define OPENSSL_free(x) Free(x)
#endif

#if OPENSSL_VERSION_NUMBER < 0x00906000L
# define SSH_OLD_EVP
# define EVP_CIPHER_CTX_get_app_data(e)		((e)->app_data)
#endif

#if (OPENSSL_VERSION_NUMBER < 0x00907000L) || defined(OPENSSL_LOBOTOMISED_AES)
# define USE_BUILTIN_RIJNDAEL
#endif

#ifdef USE_BUILTIN_RIJNDAEL
# include "rijndael.h"
# define AES_KEY rijndael_ctx
# define AES_BLOCK_SIZE 16
# define AES_encrypt(a, b, c)		rijndael_encrypt(c, a, b)
# define AES_set_encrypt_key(a, b, c)	rijndael_set_key(c, (char *)a, b, 1)
# define EVP_aes_128_cbc evp_rijndael
# define EVP_aes_192_cbc evp_rijndael
# define EVP_aes_256_cbc evp_rijndael
extern const EVP_CIPHER *evp_rijndael(void);
extern void ssh_rijndael_iv(EVP_CIPHER_CTX *, int, u_char *, u_int);
#endif

#if !defined(EVP_CTRL_SET_ACSS_MODE)
# if (OPENSSL_VERSION_NUMBER >= 0x00907000L)
#  define USE_CIPHER_ACSS 1
extern const EVP_CIPHER *evp_acss(void);
#  define EVP_acss evp_acss
# else
#  define EVP_acss NULL
# endif
#endif

/* OpenSSL 0.9.8e returns cipher key len not context key len */
#if (OPENSSL_VERSION_NUMBER == 0x0090805fL)
# define EVP_CIPHER_CTX_key_length(c) ((c)->key_len)
#endif

/*
 * We overload some of the OpenSSL crypto functions with ssh_* equivalents
 * which cater for older and/or less featureful OpenSSL version.
 *
 * In order for the compat library to call the real functions, it must
 * define SSH_DONT_OVERLOAD_OPENSSL_FUNCS before including this file and
 * implement the ssh_* equivalents.
 */
#ifndef SSH_DONT_OVERLOAD_OPENSSL_FUNCS

# ifdef SSH_OLD_EVP
#  ifdef EVP_Cipher
#   undef EVP_Cipher
#  endif
#  define EVP_CipherInit(a,b,c,d,e)	ssh_EVP_CipherInit((a),(b),(c),(d),(e))
#  define EVP_Cipher(a,b,c,d)		ssh_EVP_Cipher((a),(b),(c),(d))
#  define EVP_CIPHER_CTX_cleanup(a)	ssh_EVP_CIPHER_CTX_cleanup((a))
# endif /* SSH_OLD_EVP */

# ifdef OPENSSL_EVP_DIGESTUPDATE_VOID
#  define EVP_DigestUpdate(a,b,c)	ssh_EVP_DigestUpdate((a),(b),(c))
#  endif

# ifdef USE_OPENSSL_ENGINE
#  ifdef SSLeay_add_all_algorithms
#   undef SSLeay_add_all_algorithms
#  endif
#  define SSLeay_add_all_algorithms()  ssh_SSLeay_add_all_algorithms()
# endif

int ssh_EVP_CipherInit(EVP_CIPHER_CTX *, const EVP_CIPHER *, unsigned char *,
    unsigned char *, int);
int ssh_EVP_Cipher(EVP_CIPHER_CTX *, char *, char *, int);
int ssh_EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *);
void ssh_SSLeay_add_all_algorithms(void);
#endif	/* SSH_DONT_OVERLOAD_OPENSSL_FUNCS */
Commit	Line	Data
665a873d	1	/* $Id$ */
	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
	19	#include "includes.h"
	20	#include <openssl/evp.h>
	21
47686178	22	/* OPENSSL_free() is Free() in versions before OpenSSL 0.9.6 */
	23	#if !defined(OPENSSL_VERSION_NUMBER) \|\| (OPENSSL_VERSION_NUMBER < 0x0090600f)
	24	# define OPENSSL_free(x) Free(x)
	25	#endif
	26
665a873d	27	#if OPENSSL_VERSION_NUMBER < 0x00906000L
	28	# define SSH_OLD_EVP
	29	# define EVP_CIPHER_CTX_get_app_data(e) ((e)->app_data)
	30	#endif
	31
2c06c99b	32	#if (OPENSSL_VERSION_NUMBER < 0x00907000L) \|\| defined(OPENSSL_LOBOTOMISED_AES)
	33	# define USE_BUILTIN_RIJNDAEL
	34	#endif
	35
	36	#ifdef USE_BUILTIN_RIJNDAEL
d4487008	37	# include "rijndael.h"
	38	# define AES_KEY rijndael_ctx
	39	# define AES_BLOCK_SIZE 16
	40	# define AES_encrypt(a, b, c) rijndael_encrypt(c, a, b)
	41	# define AES_set_encrypt_key(a, b, c) rijndael_set_key(c, (char *)a, b, 1)
665a873d	42	# define EVP_aes_128_cbc evp_rijndael
	43	# define EVP_aes_192_cbc evp_rijndael
	44	# define EVP_aes_256_cbc evp_rijndael
	45	extern const EVP_CIPHER *evp_rijndael(void);
	46	extern void ssh_rijndael_iv(EVP_CIPHER_CTX , int, u_char , u_int);
	47	#endif
	48
	49	#if !defined(EVP_CTRL_SET_ACSS_MODE)
	50	# if (OPENSSL_VERSION_NUMBER >= 0x00907000L)
	51	# define USE_CIPHER_ACSS 1
	52	extern const EVP_CIPHER *evp_acss(void);
	53	# define EVP_acss evp_acss
	54	# else
	55	# define EVP_acss NULL
	56	# endif
	57	#endif
	58
799ae497	59	/* OpenSSL 0.9.8e returns cipher key len not context key len */
	60	#if (OPENSSL_VERSION_NUMBER == 0x0090805fL)
	61	# define EVP_CIPHER_CTX_key_length(c) ((c)->key_len)
	62	#endif
	63
665a873d	64	/*
2c06c99b	65	* We overload some of the OpenSSL crypto functions with ssh_* equivalents
	66	* which cater for older and/or less featureful OpenSSL version.
	67	*
	68	* In order for the compat library to call the real functions, it must
	69	* define SSH_DONT_OVERLOAD_OPENSSL_FUNCS before including this file and
	70	* implement the ssh_* equivalents.
665a873d	71	*/
9108f8d9	72	#ifndef SSH_DONT_OVERLOAD_OPENSSL_FUNCS
665a873d	73
9108f8d9	74	# ifdef SSH_OLD_EVP
665a873d	75	# ifdef EVP_Cipher
	76	# undef EVP_Cipher
	77	# endif
665a873d	78	# define EVP_CipherInit(a,b,c,d,e) ssh_EVP_CipherInit((a),(b),(c),(d),(e))
	79	# define EVP_Cipher(a,b,c,d) ssh_EVP_Cipher((a),(b),(c),(d))
	80	# define EVP_CIPHER_CTX_cleanup(a) ssh_EVP_CIPHER_CTX_cleanup((a))
9108f8d9	81	# endif /* SSH_OLD_EVP */
9108f8d9	82
3d738e65	83	# ifdef OPENSSL_EVP_DIGESTUPDATE_VOID
	84	# define EVP_DigestUpdate(a,b,c) ssh_EVP_DigestUpdate((a),(b),(c))
	85	# endif
	86
9108f8d9	87	# ifdef USE_OPENSSL_ENGINE
	88	# ifdef SSLeay_add_all_algorithms
	89	# undef SSLeay_add_all_algorithms
	90	# endif
47686178	91	# define SSLeay_add_all_algorithms() ssh_SSLeay_add_all_algorithms()
47686178	92	# endif
665a873d	93
	94	int ssh_EVP_CipherInit(EVP_CIPHER_CTX , const EVP_CIPHER , unsigned char *,
	95	unsigned char *, int);
	96	int ssh_EVP_Cipher(EVP_CIPHER_CTX , char , char *, int);
	97	int ssh_EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *);
9108f8d9	98	void ssh_SSLeay_add_all_algorithms(void);
9108f8d9	99	#endif /* SSH_DONT_OVERLOAD_OPENSSL_FUNCS */