hw_zencod.c

开源的ssl算法openssl,版本0.9.8H

/* crypto/engine/hw_zencod.c */
 /* Written by Fred Donnat ([e-mail]) for "zencod"
 * engine integration in order to redirect crypto computing on a crypto
 * hardware accelerator zenssl32  ;-)
 *
 * Date : 25 jun 2002
 * Revision : 17 Ju7 2002
 * Version : zencod_engine-0.9.7
 */

/* ====================================================================
 * Copyright (c) 1999-2001 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    [e-mail].
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * ([e-mail]).  This product includes software written by Tim
 * Hudson ([e-mail]).
 *
 */


/* ENGINE general include */
#include <stdio.h>
#include <openssl/crypto.h>
#include <openssl/dso.h>
#include <openssl/engine.h>

#ifndef OPENSSL_NO_HW
#ifndef OPENSSL_NO_HW_ZENCOD

#ifdef FLAT_INC
#  include "hw_zencod.h"
#else
#  include "vendor_defns/hw_zencod.h"
#endif

#define ZENCOD_LIB_NAME "zencod engine"
#include "hw_zencod_err.c"

#define FAIL_TO_SOFTWARE		-15

#define	ZEN_LIBRARY	"zenbridge"

#if 0
#  define PERROR(s)	perror(s)
#  define CHEESE()	fputs("## [ZenEngine] ## " __FUNCTION__ "\n", stderr)
#else
#  define PERROR(s)
#  define CHEESE()
#endif


/* Sorry ;) */
#ifndef WIN32
static inline void esrever ( unsigned char *d, int l )
{
	for(;--l>0;--l,d++){*d^=*(d+l);*(d+l)^=*d;*d^=*(d+l);}
}

static inline void ypcmem ( unsigned char *d, const unsigned char *s, int l )
{
	for(d+=l;l--;)*--d=*s++;
}
#else
static __inline void esrever ( unsigned char *d, int l )
{
	for(;--l>0;--l,d++){*d^=*(d+l);*(d+l)^=*d;*d^=*(d+l);}
}

static __inline void ypcmem ( unsigned char *d, const unsigned char *s, int l )
{
	for(d+=l;l--;)*--d=*s++;
}
#endif


#define BIGNUM2ZEN(n, bn)	(ptr_zencod_init_number((n), \
					(unsigned long) ((bn)->top * BN_BITS2), \
					(unsigned char *) ((bn)->d)))

#define ZEN_BITS(n, bytes)	(ptr_zencod_bytes2bits((unsigned char *) (n), (unsigned long) (bytes)))
#define ZEN_BYTES(bits)	(ptr_zencod_bits2bytes((unsigned long) (bits)))


/* Function for ENGINE detection and control */
static int zencod_destroy ( ENGINE *e ) ;
static int zencod_init ( ENGINE *e ) ;
static int zencod_finish ( ENGINE *e ) ;
static int zencod_ctrl ( ENGINE *e, int cmd, long i, void *p, void (*f) () ) ;

/* BIGNUM stuff */
static int zencod_bn_mod_exp ( BIGNUM *r, const BIGNUM *a, const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx ) ;

/* RSA stuff */
#ifndef OPENSSL_NO_RSA
static int RSA_zencod_rsa_mod_exp ( BIGNUM *r0, const BIGNUM *I, RSA *rsa ) ;
static int RSA_zencod_bn_mod_exp ( BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
		const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx ) ;
#endif

/* DSA stuff */
#ifndef OPENSSL_NO_DSA
static int DSA_zencod_bn_mod_exp ( DSA *dsa, BIGNUM *r, BIGNUM *a, const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
		BN_MONT_CTX *m_ctx ) ;

static DSA_SIG *DSA_zencod_do_sign ( const unsigned char *dgst, int dlen, DSA *dsa ) ;
static int DSA_zencod_do_verify ( const unsigned char *dgst, int dgst_len, DSA_SIG *sig,
		DSA *dsa ) ;
#endif

/* DH stuff */
#ifndef OPENSSL_NO_DH
static int DH_zencod_bn_mod_exp ( const DH *dh, BIGNUM *r, const BIGNUM *a, const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
		BN_MONT_CTX *m_ctx ) ;
static int DH_zencod_generate_key ( DH *dh ) ;
static int DH_zencod_compute_key ( unsigned char *key, const BIGNUM *pub_key, DH *dh ) ;
#endif

/* Rand stuff */
static void RAND_zencod_seed ( const void *buf, int num ) ;
static int RAND_zencod_rand_bytes ( unsigned char *buf, int num ) ;
static int RAND_zencod_rand_status ( void ) ;

/* Digest Stuff */
static int engine_digests ( ENGINE *e, const EVP_MD **digest, const int **nids, int nid ) ;

/* Cipher Stuff */
static int engine_ciphers ( ENGINE *e, const EVP_CIPHER **cipher, const int **nids, int nid ) ;


#define ZENCOD_CMD_SO_PATH			ENGINE_CMD_BASE
static const ENGINE_CMD_DEFN zencod_cmd_defns [ ] =
{
	{ ZENCOD_CMD_SO_PATH,
	  "SO_PATH",
	  "Specifies the path to the 'zenbridge' shared library",
	  ENGINE_CMD_FLAG_STRING},
	{ 0, NULL, NULL, 0 }
} ;


#ifndef OPENSSL_NO_RSA
/* Our internal RSA_METHOD specific to zencod ENGINE providing pointers to our function */
static RSA_METHOD zencod_rsa =
{
	"ZENCOD RSA method",
	NULL,
	NULL,
	NULL,
	NULL,
	RSA_zencod_rsa_mod_exp,
	RSA_zencod_bn_mod_exp,
	NULL,
	NULL,
	0,
	NULL,
	NULL,
	NULL
} ;
#endif

#ifndef OPENSSL_NO_DSA
/* Our internal DSA_METHOD specific to zencod ENGINE providing pointers to our function */
static DSA_METHOD zencod_dsa =
{
	"ZENCOD DSA method",
	DSA_zencod_do_sign,
	NULL,
	DSA_zencod_do_verify,
	NULL,
	DSA_zencod_bn_mod_exp,
	NULL,
	NULL,
	0,
	NULL
} ;
#endif

#ifndef OPENSSL_NO_DH
/* Our internal DH_METHOD specific to zencod ENGINE providing pointers to our function */
static DH_METHOD zencod_dh =
{
	"ZENCOD DH method",
	DH_zencod_generate_key,
	DH_zencod_compute_key,
	DH_zencod_bn_mod_exp,
	NULL,
	NULL,
	0,
	NULL
} ;
#endif

/* Our internal RAND_meth specific to zencod ZNGINE providing pointers to  our function */
static RAND_METHOD zencod_rand =
{
	RAND_zencod_seed,
	RAND_zencod_rand_bytes,
	NULL,
	NULL,
	RAND_zencod_rand_bytes,
	RAND_zencod_rand_status
} ;


/* Constants used when creating the ENGINE */
static const char *engine_zencod_id = "zencod";
static const char *engine_zencod_name = "ZENCOD hardware engine support";


/* This internal function is used by ENGINE_zencod () and possibly by the
 * "dynamic" ENGINE support too   ;-)
 */
static int bind_helper ( ENGINE *e )
{

#ifndef OPENSSL_NO_RSA
	const RSA_METHOD *meth_rsa ;
#endif
#ifndef OPENSSL_NO_DSA
	const DSA_METHOD *meth_dsa ;
#endif
#ifndef OPENSSL_NO_DH
	const DH_METHOD *meth_dh ;
#endif

	const RAND_METHOD *meth_rand ;


	if ( !ENGINE_set_id ( e, engine_zencod_id ) ||
			!ENGINE_set_name ( e, engine_zencod_name ) ||
#ifndef OPENSSL_NO_RSA
			!ENGINE_set_RSA ( e, &zencod_rsa ) ||
#endif
#ifndef OPENSSL_NO_DSA
			!ENGINE_set_DSA ( e, &zencod_dsa ) ||
#endif
#ifndef OPENSSL_NO_DH
			!ENGINE_set_DH ( e, &zencod_dh ) ||
#endif
			!ENGINE_set_RAND ( e, &zencod_rand ) ||

			!ENGINE_set_destroy_function ( e, zencod_destroy ) ||
			!ENGINE_set_init_function ( e, zencod_init ) ||
			!ENGINE_set_finish_function ( e, zencod_finish ) ||
			!ENGINE_set_ctrl_function ( e, zencod_ctrl ) ||
			!ENGINE_set_cmd_defns ( e, zencod_cmd_defns ) ||
			!ENGINE_set_digests ( e, engine_digests ) ||
			!ENGINE_set_ciphers ( e, engine_ciphers ) ) {
		return 0 ;
	}

#ifndef OPENSSL_NO_RSA
	/* We know that the "PKCS1_SSLeay()" functions hook properly
	 * to the Zencod-specific mod_exp and mod_exp_crt so we use
	 * those functions. NB: We don't use ENGINE_openssl() or
	 * anything "more generic" because something like the RSAref
	 * code may not hook properly, and if you own one of these
	 * cards then you have the right to do RSA operations on it
	 * anyway!
	 */
	meth_rsa = RSA_PKCS1_SSLeay () ;

	zencod_rsa.rsa_pub_enc = meth_rsa->rsa_pub_enc ;
	zencod_rsa.rsa_pub_dec = meth_rsa->rsa_pub_dec ;
	zencod_rsa.rsa_priv_enc = meth_rsa->rsa_priv_enc ;
	zencod_rsa.rsa_priv_dec = meth_rsa->rsa_priv_dec ;
	/* meth_rsa->rsa_mod_exp */
	/* meth_rsa->bn_mod_exp */
	zencod_rsa.init = meth_rsa->init ;
	zencod_rsa.finish = meth_rsa->finish ;
#endif

#ifndef OPENSSL_NO_DSA
	/* We use OpenSSL meth to supply what we don't provide ;-*)
	 */
	meth_dsa = DSA_OpenSSL () ;

	/* meth_dsa->dsa_do_sign */
	zencod_dsa.dsa_sign_setup = meth_dsa->dsa_sign_setup ;
	/* meth_dsa->dsa_do_verify */
	zencod_dsa.dsa_mod_exp = meth_dsa->dsa_mod_exp ;
	/* zencod_dsa.bn_mod_exp = meth_dsa->bn_mod_exp ; */
	zencod_dsa.init = meth_dsa->init ;
	zencod_dsa.finish = meth_dsa->finish ;
#endif

#ifndef OPENSSL_NO_DH
	/* We use OpenSSL meth to supply what we don't provide ;-*)
	 */
	meth_dh = DH_OpenSSL () ;

	/* zencod_dh.generate_key = meth_dh->generate_key ; */
	/* zencod_dh.compute_key = meth_dh->compute_key ; */
	/* zencod_dh.bn_mod_exp = meth_dh->bn_mod_exp ; */
	zencod_dh.init = meth_dh->init ;
	zencod_dh.finish = meth_dh->finish ;

#endif

	/* We use OpenSSL (SSLeay) meth to supply what we don't provide ;-*)
	 */
	meth_rand = RAND_SSLeay () ;

	/* meth_rand->seed ; */
	/* zencod_rand.seed = meth_rand->seed ; */
	/* meth_rand->bytes ; */
	/* zencod_rand.bytes = meth_rand->bytes ; */
	zencod_rand.cleanup = meth_rand->cleanup ;
	zencod_rand.add = meth_rand->add ;
	/* meth_rand->pseudorand ; */
	/* zencod_rand.pseudorand = meth_rand->pseudorand ; */
	/* zencod_rand.status = meth_rand->status ; */
	/* meth_rand->status ; */

	/* Ensure the zencod error handling is set up */
	ERR_load_ZENCOD_strings () ;
	return 1 ;
}


/* As this is only ever called once, there's no need for locking
 * (indeed - the lock will already be held by our caller!!!)
 */
static ENGINE *ENGINE_zencod ( void )
{

	ENGINE *eng = ENGINE_new () ;

	if ( !eng ) {
		return NULL ;
	}
	if ( !bind_helper ( eng ) ) {
		ENGINE_free ( eng ) ;
		return NULL ;
	}

	return eng ;
}


#ifdef ENGINE_DYNAMIC_SUPPORT
static
#endif
void ENGINE_load_zencod ( void )
{
	/* Copied from eng_[openssl|dyn].c */
	ENGINE *toadd = ENGINE_zencod ( ) ;
	if ( !toadd ) return ;
	ENGINE_add ( toadd ) ;
	ENGINE_free ( toadd ) ;
	ERR_clear_error ( ) ;
}


/* This is a process-global DSO handle used for loading and unloading
 * the ZENBRIDGE library.
 * NB: This is only set (or unset) during an * init () or finish () call
 * (reference counts permitting) and they're  * operating with global locks,
 * so this should be thread-safe * implicitly.
 */
static DSO *zencod_dso = NULL ;

static t_zencod_test *ptr_zencod_test = NULL ;
static t_zencod_bytes2bits *ptr_zencod_bytes2bits = NULL ;
static t_zencod_bits2bytes *ptr_zencod_bits2bytes = NULL ;
static t_zencod_new_number *ptr_zencod_new_number = NULL ;
static t_zencod_init_number *ptr_zencod_init_number = NULL ;

static t_zencod_rsa_mod_exp *ptr_zencod_rsa_mod_exp = NULL ;
static t_zencod_rsa_mod_exp_crt *ptr_zencod_rsa_mod_exp_crt = NULL ;
static t_zencod_dsa_do_sign *ptr_zencod_dsa_do_sign = NULL ;
static t_zencod_dsa_do_verify *ptr_zencod_dsa_do_verify = NULL ;
static t_zencod_dh_generate_key *ptr_zencod_dh_generate_key = NULL ;
static t_zencod_dh_compute_key *ptr_zencod_dh_compute_key = NULL ;
static t_zencod_rand_bytes *ptr_zencod_rand_bytes = NULL ;
static t_zencod_math_mod_exp *ptr_zencod_math_mod_exp = NULL ;

static t_zencod_md5_init *ptr_zencod_md5_init = NULL ;
static t_zencod_md5_update *ptr_zencod_md5_update = NULL ;
static t_zencod_md5_do_final *ptr_zencod_md5_do_final = NULL ;
static t_zencod_sha1_init *ptr_zencod_sha1_init = NULL ;
static t_zencod_sha1_update *ptr_zencod_sha1_update = NULL ;
static t_zencod_sha1_do_final *ptr_zencod_sha1_do_final = NULL ;

static t_zencod_xdes_cipher *ptr_zencod_xdes_cipher = NULL ;
static t_zencod_rc4_cipher *ptr_zencod_rc4_cipher = NULL ;

/* These are the static string constants for the DSO file name and the function
 * symbol names to bind to.
 */