/* crypto/engine/hw_zencod.c */
/*
* Written by Fred Donnat (frederic.donnat@zencod.com) 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
* licensing@OpenSSL.org.
*
* 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
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com).
*
*/
/* 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.
*/
static const char *ZENCOD_LIBNAME = ZEN_LIBRARY;
static const char *ZENCOD_Fct_0 = "test_device";
static const char *ZENCOD_Fct_1 = "zenbridge_bytes2bits";
static const char *ZENCOD_Fct_2 = "zenbridge_bits2bytes";
static const char *ZENCOD_Fct_3 = "zenbridge_new_number";
static const char *ZENCOD_Fct_4 = "zenbridge_init_number";
static const char *ZENCOD_Fct_exp_1 = "zenbridge_rsa_mod_exp";
static const char *ZENCOD_Fct_exp_2 = "zenbridge_rsa_mod_exp_crt";
static const char *ZENCOD_Fct_dsa_1 = "zenbridge_dsa_do_sign";
static const char *ZENCOD_Fct_dsa_2 = "zenbridge_dsa_do_verify";
static const char *ZENCOD_Fct_dh_1 = "zenbridge_dh_generate_key";
static const char *ZENCOD_Fct_dh_2 = "zenbridge_dh_compute_key";
static const char *ZENCOD_Fct_rand_1 = "zenbridge_rand_bytes";
static const char *ZENCOD_Fct_math_1 = "zenbridge_math_mod_exp";
static const char *ZENCOD_Fct_md5_1 = "zenbridge_md5_init";
static const char *ZENCOD_Fct_md5_2 = "zenbridge_md5_update";
static const char *ZENCOD_Fct_md5_3 = "zenbridge_md5_do_final";
static const char *ZENCOD_Fct_sha1_1 = "zenbridge_sha1_init";
static const char *ZENCOD_Fct_sha1_2 = "zenbridge_sha1_update";
static const char *ZENCOD_Fct_sha1_3 = "zenbridge_sha1_do_final";
static const char *ZENCOD_Fct_xdes_1 = "zenbridge_xdes_cipher";
static const char *ZENCOD_Fct_rc4_1 = "zenbridge_rc4_cipher";
/*
* Destructor (complements the "ENGINE_zencod ()" constructor)
*/
static int zencod_destroy(ENGINE *e)
{
ERR_unload_ZENCOD_strings();
return 1;
}
/*
* (de)initialisation functions. Control Function
*/
static int zencod_init(ENGINE *e)
{
t_zencod_test *ptr_0;
t_zencod_bytes2bits *ptr_1;
t_zencod_bits2bytes *ptr_2;
t_zencod_new_number *ptr_3;
t_zencod_init_number *ptr_4;
t_zencod_rsa_mod_exp *ptr_exp_1;
t_zencod_rsa_mod_exp_crt *ptr_exp_2;
t_zencod_dsa_do_sign *ptr_dsa_1;
t_zencod_dsa_do_verify *ptr_dsa_2;
t_zencod_dh_generate_key *ptr_dh_1;
t_zencod_dh_compute_key *ptr_dh_2;
t_zencod_rand_bytes *ptr_rand_1;
t_zencod_math_mod_exp *ptr_math_1;
t_zencod_md5_init *ptr_md5_1;
t_zencod_md5_update *ptr_md5_2;
t_zencod_md5_do_final *ptr_md5_3;
t_zencod_sha1_init *ptr_sha1_1;
t_zencod_sha1_update *ptr_sha1_2;
t_zencod_sha1_do_final *ptr_sha1_3;
t_zencod_xdes_cipher *ptr_xdes_1;
t_zencod_rc4_cipher *ptr_rc4_1;
CHEESE();
/*
* We Should add some tests for non NULL parameters or bad value !!
* Stuff to be done ...
*/
if (zencod_dso != NULL) {
ZENCODerr(ZENCOD_F_ZENCOD_INIT, ZENCOD_R_ALREADY_LOADED);
goto err;
}
/*
* Trying to load the Library "cryptozen"
*/
zencod_dso = DSO_load(NULL, ZENCOD_LIBNAME, NULL, 0);
if (zencod_dso == NULL) {
ZENCODerr(ZENCOD_F_ZENCOD_INIT, ZENCOD_R_DSO_FAILURE);
goto err;
}
/*
* Trying to load Function from the Library
*/
if (!
(ptr_1 =
(t_zencod_bytes2bits *) DSO_bind_func(zencod_dso, ZENCOD_Fct_1))
|| !(ptr_2 = (t_zencod_bits2bytes *) DSO_bind_func(zencod_dso, ZENCOD_Fct_2))
|| !(ptr_3 = (t_zencod_new_number *) DSO_bind_func(zencod_dso, ZENCOD_Fct_3))
|| !(ptr_4 = (t_zencod_init_number *) DSO_bind_func(zencod_dso, ZENCOD_Fct_4))
|| !(ptr_exp_1 =
(t_zencod_rsa_mod_exp *) DSO_bind_func(zencod_dso, ZENCOD_Fct_exp_1))
|| !(ptr_exp_2 =
(t_zencod_rsa_mod_exp_crt *) DSO_bind_func(zencod_dso, ZENCOD_Fct_exp_2))
|| !(ptr_dsa_1 =
(t_zencod_dsa_do_sign *) DSO_bind_func(zencod_dso, ZENCOD_Fct_dsa_1))
|| !(ptr_dsa_2 =
(t_zencod_dsa_do_verify *) DSO_bind_func(zencod_dso, ZENCOD_Fct_dsa_2))
|| !(ptr_dh_1 =
(t_zencod_dh_generate_key *) DSO_bind_func(zencod_dso, ZENCOD_Fct_dh_1))
|| !(ptr_dh_2 =
(t_zencod_dh_compute_key *) DSO_bind_func(zencod_dso, ZENCOD_Fct_dh_2))
|| !(ptr_rand_1 =
(t_zencod_rand_bytes *) DSO_bind_func(zencod_dso, ZENCOD_Fct_rand_1))
|| !(ptr_math_1 =
(t_zencod_math_mod_exp *) DSO_bind_func(zencod_dso, ZENCOD_Fct_math_1))
|| !(ptr_0 = (t_zencod_test *) DSO_bind_func(zencod_dso, ZENCOD_Fct_0))
|| !(ptr_md5_1 =
(t_zencod_md5_init *) DSO_bind_func(zencod_dso, ZENCOD_Fct_md5_1))
|| !(ptr_md5_2 =
(t_zencod_md5_update *) DSO_bind_func(zencod_dso, ZENCOD_Fct_md5_2))
|| !(ptr_md5_3 =
(t_zencod_md5_do_final *) DSO_bind_func(zencod_dso, ZENCOD_Fct_md5_3))
|| !(ptr_sha1_1 =
(t_zencod_sha1_init *) DSO_bind_func(zencod_dso, ZENCOD_Fct_sha1_1))
|| !(ptr_sha1_2 =
(t_zencod_sha1_update *) DSO_bind_func(zencod_dso, ZENCOD_Fct_sha1_2))
|| !(ptr_sha1_3 =
(t_zencod_sha1_do_final *) DSO_bind_func(zencod_dso, ZENCOD_Fct_sha1_3))
|| !(ptr_xdes_1 =
(t_zencod_xdes_cipher *) DSO_bind_func(zencod_dso, ZENCOD_Fct_xdes_1))
|| !(ptr_rc4_1 =
(t_zencod_rc4_cipher *) DSO_bind_func(zencod_dso, ZENCOD_Fct_rc4_1))) {
ZENCODerr(ZENCOD_F_ZENCOD_INIT, ZENCOD_R_DSO_FAILURE);
goto err;
}
/*
* The function from "cryptozen" Library have been correctly loaded so
* copy them
*/
ptr_zencod_test = ptr_0;
ptr_zencod_bytes2bits = ptr_1;
ptr_zencod_bits2bytes = ptr_2;
ptr_zencod_new_number = ptr_3;
ptr_zencod_init_number = ptr_4;
ptr_zencod_rsa_mod_exp = ptr_exp_1;
ptr_zencod_rsa_mod_exp_crt = ptr_exp_2;
ptr_zencod_dsa_do_sign = ptr_dsa_1;
ptr_zencod_dsa_do_verify = ptr_dsa_2;
ptr_zencod_dh_generate_key = ptr_dh_1;
ptr_zencod_dh_compute_key = ptr_dh_2;
ptr_zencod_rand_bytes = ptr_rand_1;
ptr_zencod_math_mod_exp = ptr_math_1;
ptr_zencod_test = ptr_0;
ptr_zencod_md5_init = ptr_md5_1;
ptr_zencod_md5_update = ptr_md5_2;
ptr_zencod_md5_do_final = ptr_md5_3;
ptr_zencod_sha1_init = ptr_sha1_1;
ptr_zencod_sha1_update = ptr_sha1_2;
ptr_zencod_sha1_do_final = ptr_sha1_3;
ptr_zencod_xdes_cipher = ptr_xdes_1;
ptr_zencod_rc4_cipher = ptr_rc4_1;
/*
* We should perform a test to see if there is actually any unit runnig on
* the system ... Even if the cryptozen library is loaded the module coul
* not be loaded on the system ... For now we may just open and close the
* device !!
*/
if (ptr_zencod_test() != 0) {
ZENCODerr(ZENCOD_F_ZENCOD_INIT, ZENCOD_R_UNIT_FAILURE);
goto err;
}
return 1;
err:
if (zencod_dso) {
DSO_free(zencod_dso);
}
zencod_dso = NULL;
ptr_zencod_bytes2bits = NULL;
ptr_zencod_bits2bytes = NULL;
ptr_zencod_new_number = NULL;
ptr_zencod_init_number = NULL;
ptr_zencod_rsa_mod_exp = NULL;
ptr_zencod_rsa_mod_exp_crt = NULL;
ptr_zencod_dsa_do_sign = NULL;
ptr_zencod_dsa_do_verify = NULL;
ptr_zencod_dh_generate_key = NULL;
ptr_zencod_dh_compute_key = NULL;
ptr_zencod_rand_bytes = NULL;
ptr_zencod_math_mod_exp = NULL;
ptr_zencod_test = NULL;
ptr_zencod_md5_init = NULL;
ptr_zencod_md5_update = NULL;
ptr_zencod_md5_do_final = NULL;
ptr_zencod_sha1_init = NULL;
ptr_zencod_sha1_update = NULL;
ptr_zencod_sha1_do_final = NULL;
ptr_zencod_xdes_cipher = NULL;
ptr_zencod_rc4_cipher = NULL;
return 0;
}
static int zencod_finish(ENGINE *e)
{
CHEESE();
/*
* We Should add some tests for non NULL parameters or bad value !!
* Stuff to be done ...
*/
if (zencod_dso == NULL) {
ZENCODerr(ZENCOD_F_ZENCOD_FINISH, ZENCOD_R_NOT_LOADED);
return 0;
}
if (!DSO_free(zencod_dso)) {
ZENCODerr(ZENCOD_F_ZENCOD_FINISH, ZENCOD_R_DSO_FAILURE);
return 0;
}
zencod_dso = NULL;
ptr_zencod_bytes2bits = NULL;
ptr_zencod_bits2bytes = NULL;
ptr_zencod_new_number = NULL;
ptr_zencod_init_number = NULL;
ptr_zencod_rsa_mod_exp = NULL;
ptr_zencod_rsa_mod_exp_crt = NULL;
ptr_zencod_dsa_do_sign = NULL;
ptr_zencod_dsa_do_verify = NULL;
ptr_zencod_dh_generate_key = NULL;
ptr_zencod_dh_compute_key = NULL;
ptr_zencod_rand_bytes = NULL;
ptr_zencod_math_mod_exp = NULL;
ptr_zencod_test = NULL;
ptr_zencod_md5_init = NULL;
ptr_zencod_md5_update = NULL;
ptr_zencod_md5_do_final = NULL;
ptr_zencod_sha1_init = NULL;
ptr_zencod_sha1_update = NULL;
ptr_zencod_sha1_do_final = NULL;
ptr_zencod_xdes_cipher = NULL;
ptr_zencod_rc4_cipher = NULL;
return 1;
}
static int zencod_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f) ())
{
int initialised = ((zencod_dso == NULL) ? 0 : 1);
CHEESE();
/*
* We Should add some tests for non NULL parameters or bad value !!
* Stuff to be done ...
*/
switch (cmd) {
case ZENCOD_CMD_SO_PATH:
if (p == NULL) {
ZENCODerr(ZENCOD_F_ZENCOD_CTRL, ERR_R_PASSED_NULL_PARAMETER);
return 0;
}
if (initialised) {
ZENCODerr(ZENCOD_F_ZENCOD_CTRL, ZENCOD_R_ALREADY_LOADED);
return 0;
}
ZENCOD_LIBNAME = (const char *)p;
return 1;
default:
break;
}
ZENCODerr(ZENCOD_F_ZENCOD_CTRL, ZENCOD_R_CTRL_COMMAND_NOT_IMPLEMENTED);
return 0;
}
/*
* BIGNUM stuff Functions
*/
static int zencod_bn_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
const BIGNUM *m, BN_CTX *ctx)
{
zen_nb_t y, x, e, n;
int ret;
CHEESE();
if (!zencod_dso) {
ENGINEerr(ZENCOD_F_ZENCOD_BN_MOD_EXP, ZENCOD_R_NOT_LOADED);
return 0;
}
if (!bn_wexpand(r, m->top + 1)) {
ENGINEerr(ZENCOD_F_ZENCOD_BN_MOD_EXP, ZENCOD_R_BN_EXPAND_FAIL);
return 0;
}
memset(r->d, 0, BN_num_bytes(m));
ptr_zencod_init_number(&y, (r->dmax - 1) * sizeof(BN_ULONG) * 8,
(unsigned char *)r->d);
BIGNUM2ZEN(&x, a);
BIGNUM2ZEN(&e, p);
BIGNUM2ZEN(&n, m);
/* Must invert x and e parameter due to BN mod exp prototype ... */
ret = ptr_zencod_math_mod_exp(&y, &e, &x, &n);
if (ret) {
PERROR("zenbridge_math_mod_exp");
ENGINEerr(ZENCOD_F_ZENCOD_BN_MOD_EXP, ZENCOD_R_REQUEST_FAILED);
return 0;
}
r->top = (BN_num_bits(m) + BN_BITS2 - 1) / BN_BITS2;
return 1;
}
/*
* RSA stuff Functions
*/
# ifndef OPENSSL_NO_RSA
static int RSA_zencod_rsa_mod_exp(BIGNUM *r0, const BIGNUM *i, RSA *rsa)
{
CHEESE();
if (!zencod_dso) {
ENGINEerr(ZENCOD_F_ZENCOD_RSA_MOD_EXP_CRT, ZENCOD_R_NOT_LOADED);
return 0;
}
if (!rsa->p || !rsa->q || !rsa->dmp1 || !rsa->dmq1 || !rsa->iqmp) {
ENGINEerr(ZENCOD_F_ZENCOD_RSA_MOD_EXP_CRT,
ZENCOD_R_BAD_KEY_COMPONENTS);
return 0;
}
/* Do in software if argument is too large for hardware */
if (RSA_size(rsa) * 8 > ZENBRIDGE_MAX_KEYSIZE_RSA_CRT) {
const RSA_METHOD *meth;
meth = RSA_PKCS1_SSLeay();
return meth->rsa_mod_exp(r0, i, rsa);
} else {
zen_nb_t y, x, p, q, dmp1, dmq1, iqmp;
if (!bn_expand(r0, RSA_size(rsa) * 8)) {
ENGINEerr(ZENCOD_F_ZENCOD_RSA_MOD_EXP_CRT,
ZENCOD_R_BN_EXPAND_FAIL);
return 0;
}
r0->top = (RSA_size(rsa) * 8 + BN_BITS2 - 1) / BN_BITS2;
BIGNUM2ZEN(&x, i);
BIGNUM2ZEN(&y, r0);
BIGNUM2ZEN(&p, rsa->p);
BIGNUM2ZEN(&q, rsa->q);
BIGNUM2ZEN(&dmp1, rsa->dmp1);
BIGNUM2ZEN(&dmq1, rsa->dmq1);
BIGNUM2ZEN(&iqmp, rsa->iqmp);
if (ptr_zencod_rsa_mod_exp_crt(&y, &x, &p, &q, &dmp1, &dmq1, &iqmp) <
0) {
PERROR("zenbridge_rsa_mod_exp_crt");
ENGINEerr(ZENCOD_F_ZENCOD_RSA_MOD_EXP_CRT,
ZENCOD_R_REQUEST_FAILED);
return 0;
}
return 1;
}
}
/*
* This function is aliased to RSA_mod_exp (with the mont stuff dropped).
*/
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)
{
CHEESE();
if (!zencod_dso) {
ENGINEerr(ZENCOD_F_ZENCOD_RSA_MOD_EXP, ZENCOD_R_NOT_LOADED);
return 0;
}
/* Do in software if argument is too large for hardware */
if (BN_num_bits(m) > ZENBRIDGE_MAX_KEYSIZE_RSA) {
const RSA_METHOD *meth;
meth = RSA_PKCS1_SSLeay();
return meth->bn_mod_exp(r, a, p, m, ctx, m_ctx);
} else {
zen_nb_t y, x, e, n;
if (!bn_expand(r, BN_num_bits(m))) {
ENGINEerr(ZENCOD_F_ZENCOD_RSA_MOD_EXP, ZENCOD_R_BN_EXPAND_FAIL);
return 0;
}
r->top = (BN_num_bits(m) + BN_BITS2 - 1) / BN_BITS2;
BIGNUM2ZEN(&x, a);
BIGNUM2ZEN(&y, r);
BIGNUM2ZEN(&e, p);
BIGNUM2ZEN(&n, m);
if (ptr_zencod_rsa_mod_exp(&y, &x, &n, &e) < 0) {
PERROR("zenbridge_rsa_mod_exp");
ENGINEerr(ZENCOD_F_ZENCOD_RSA_MOD_EXP, ZENCOD_R_REQUEST_FAILED);
return 0;
}
return 1;
}
}
# endif /* !OPENSSL_NO_RSA */
# ifndef OPENSSL_NO_DSA
/*
* DSA stuff Functions
*/
static DSA_SIG *DSA_zencod_do_sign(const unsigned char *dgst, int dlen,
DSA *dsa)
{
zen_nb_t p, q, g, x, y, r, s, data;
DSA_SIG *sig;
BIGNUM *bn_r = NULL;
BIGNUM *bn_s = NULL;
char msg[20];
CHEESE();
if (!zencod_dso) {
ENGINEerr(ZENCOD_F_ZENCOD_DSA_DO_SIGN, ZENCOD_R_NOT_LOADED);
goto FAILED;
}
if (dlen > 160) {
ENGINEerr(ZENCOD_F_ZENCOD_DSA_DO_SIGN, ZENCOD_R_REQUEST_FAILED);
goto FAILED;
}
/* Do in software if argument is too large for hardware */
if (BN_num_bits(dsa->p) > ZENBRIDGE_MAX_KEYSIZE_DSA_SIGN ||
BN_num_bits(dsa->g) > ZENBRIDGE_MAX_KEYSIZE_DSA_SIGN) {
const DSA_METHOD *meth;
ENGINEerr(ZENCOD_F_ZENCOD_DSA_DO_SIGN, ZENCOD_R_BAD_KEY_COMPONENTS);
meth = DSA_OpenSSL();
return meth->dsa_do_sign(dgst, dlen, dsa);
}
if (!(bn_s = BN_new()) || !(bn_r = BN_new())) {
ENGINEerr(ZENCOD_F_ZENCOD_DSA_DO_SIGN, ZENCOD_R_BAD_KEY_COMPONENTS);
goto FAILED;
}
if (!bn_expand(bn_r, 160) || !bn_expand(bn_s, 160)) {
ENGINEerr(ZENCOD_F_ZENCOD_DSA_DO_SIGN, ZENCOD_R_BN_EXPAND_FAIL);
goto FAILED;
}
bn_r->top = bn_s->top = (160 + BN_BITS2 - 1) / BN_BITS2;
BIGNUM2ZEN(&p, dsa->p);
BIGNUM2ZEN(&q, dsa->q);
BIGNUM2ZEN(&g, dsa->g);
BIGNUM2ZEN(&x, dsa->priv_key);
BIGNUM2ZEN(&y, dsa->pub_key);
BIGNUM2ZEN(&r, bn_r);
BIGNUM2ZEN(&s, bn_s);
q.len = x.len = 160;
ypcmem(msg, dgst, 20);
ptr_zencod_init_number(&data, 160, msg);
if (ptr_zencod_dsa_do_sign(0, &data, &y, &p, &q, &g, &x, &r, &s) < 0) {
PERROR("zenbridge_dsa_do_sign");
ENGINEerr(ZENCOD_F_ZENCOD_DSA_DO_SIGN, ZENCOD_R_REQUEST_FAILED);
goto FAILED;
}
if (!(sig = DSA_SIG_new())) {
ENGINEerr(ZENCOD_F_ZENCOD_DSA_DO_SIGN, ZENCOD_R_REQUEST_FAILED);
goto FAILED;
}
sig->r = bn_r;
sig->s = bn_s;
return sig;
FAILED:
if (bn_r)
BN_free(bn_r);
if (bn_s)
BN_free(bn_s);
return NULL;
}
static int DSA_zencod_do_verify(const unsigned char *dgst, int dlen,
DSA_SIG *sig, DSA *dsa)
{
zen_nb_t data, p, q, g, y, r, s, v;
char msg[20];
char v_data[20];
int ret;
CHEESE();
if (!zencod_dso) {
ENGINEerr(ZENCOD_F_ZENCOD_DSA_DO_VERIFY, ZENCOD_R_NOT_LOADED);
return 0;
}
if (dlen > 160) {
ENGINEerr(ZENCOD_F_ZENCOD_DSA_DO_SIGN, ZENCOD_R_REQUEST_FAILED);
return 0;
}
/* Do in software if argument is too large for hardware */
if (BN_num_bits(dsa->p) > ZENBRIDGE_MAX_KEYSIZE_DSA_SIGN ||
BN_num_bits(dsa->g) > ZENBRIDGE_MAX_KEYSIZE_DSA_SIGN) {
const DSA_METHOD *meth;
ENGINEerr(ZENCOD_F_ZENCOD_DSA_DO_SIGN, ZENCOD_R_BAD_KEY_COMPONENTS);
meth = DSA_OpenSSL();
return meth->dsa_do_verify(dgst, dlen, sig, dsa);
}
BIGNUM2ZEN(&p, dsa->p);
BIGNUM2ZEN(&q, dsa->q);
BIGNUM2ZEN(&g, dsa->g);
BIGNUM2ZEN(&y, dsa->pub_key);
BIGNUM2ZEN(&r, sig->r);
BIGNUM2ZEN(&s, sig->s);
ptr_zencod_init_number(&v, 160, v_data);
ypcmem(msg, dgst, 20);
ptr_zencod_init_number(&data, 160, msg);
if ((ret =
ptr_zencod_dsa_do_verify(0, &data, &p, &q, &g, &y, &r, &s,
&v)) < 0) {
PERROR("zenbridge_dsa_do_verify");
ENGINEerr(ZENCOD_F_ZENCOD_DSA_DO_VERIFY, ZENCOD_R_REQUEST_FAILED);
return 0;
}
return ((ret == 0) ? 1 : ret);
}
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)
{
CHEESE();
return zencod_bn_mod_exp(r, a, p, m, ctx);
}
# endif /* !OPENSSL_NO_DSA */
# ifndef OPENSSl_NO_DH
/*
* DH stuff Functions
*/
static int DH_zencod_generate_key(DH *dh)
{
BIGNUM *bn_prv = NULL;
BIGNUM *bn_pub = NULL;
zen_nb_t y, x, g, p;
int generate_x;
CHEESE();
if (!zencod_dso) {
ENGINEerr(ZENCOD_F_ZENCOD_DH_GENERATE, ZENCOD_R_NOT_LOADED);
return 0;
}
/* Private key */
if (dh->priv_key) {
bn_prv = dh->priv_key;
generate_x = 0;
} else {
if (!(bn_prv = BN_new())) {
ENGINEerr(ZENCOD_F_ZENCOD_DH_GENERATE, ZENCOD_R_BN_EXPAND_FAIL);
goto FAILED;
}
generate_x = 1;
}
/* Public key */
if (dh->pub_key)
bn_pub = dh->pub_key;
else if (!(bn_pub = BN_new())) {
ENGINEerr(ZENCOD_F_ZENCOD_DH_GENERATE, ZENCOD_R_BN_EXPAND_FAIL);
goto FAILED;
}
/* Expand */
if (!bn_wexpand(bn_prv, dh->p->dmax) || !bn_wexpand(bn_pub, dh->p->dmax)) {
ENGINEerr(ZENCOD_F_ZENCOD_DH_GENERATE, ZENCOD_R_BN_EXPAND_FAIL);
goto FAILED;
}
bn_prv->top = dh->p->top;
bn_pub->top = dh->p->top;
/* Convert all keys */
BIGNUM2ZEN(&p, dh->p);
BIGNUM2ZEN(&g, dh->g);
BIGNUM2ZEN(&y, bn_pub);
BIGNUM2ZEN(&x, bn_prv);
x.len = DH_size(dh) * 8;
/* Adjust the lengths of P and G */
p.len = ptr_zencod_bytes2bits(p.data, ZEN_BYTES(p.len));
g.len = ptr_zencod_bytes2bits(g.data, ZEN_BYTES(g.len));
/* Send the request to the driver */
if (ptr_zencod_dh_generate_key(&y, &x, &g, &p, generate_x) < 0) {
perror("zenbridge_dh_generate_key");
ENGINEerr(ZENCOD_F_ZENCOD_DH_GENERATE, ZENCOD_R_REQUEST_FAILED);
goto FAILED;
}
dh->priv_key = bn_prv;
dh->pub_key = bn_pub;
return 1;
FAILED:
if (!dh->priv_key && bn_prv)
BN_free(bn_prv);
if (!dh->pub_key && bn_pub)
BN_free(bn_pub);
return 0;
}
static int DH_zencod_compute_key(unsigned char *key, const BIGNUM *pub_key,
DH *dh)
{
zen_nb_t y, x, p, k;
CHEESE();
if (!zencod_dso) {
ENGINEerr(ZENCOD_F_ZENCOD_DH_COMPUTE, ZENCOD_R_NOT_LOADED);
return 0;
}
if (!dh->priv_key) {
ENGINEerr(ZENCOD_F_ZENCOD_DH_COMPUTE, ZENCOD_R_BAD_KEY_COMPONENTS);
return 0;
}
/* Convert all keys */
BIGNUM2ZEN(&y, pub_key);
BIGNUM2ZEN(&x, dh->priv_key);
BIGNUM2ZEN(&p, dh->p);
ptr_zencod_init_number(&k, p.len, key);
/* Adjust the lengths */
p.len = ptr_zencod_bytes2bits(p.data, ZEN_BYTES(p.len));
y.len = ptr_zencod_bytes2bits(y.data, ZEN_BYTES(y.len));
x.len = ptr_zencod_bytes2bits(x.data, ZEN_BYTES(x.len));
/* Call the hardware */
if (ptr_zencod_dh_compute_key(&k, &y, &x, &p) < 0) {
ENGINEerr(ZENCOD_F_ZENCOD_DH_COMPUTE, ZENCOD_R_REQUEST_FAILED);
return 0;
}
/* The key must be written MSB -> LSB */
k.len = ptr_zencod_bytes2bits(k.data, ZEN_BYTES(k.len));
esrever(key, ZEN_BYTES(k.len));
return ZEN_BYTES(k.len);
}
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)
{
CHEESE();
return zencod_bn_mod_exp(r, a, p, m, ctx);
}
# endif /* !OPENSSL_NO_DH */
/*
* RAND stuff Functions
*/
static void RAND_zencod_seed(const void *buf, int num)
{
/*
* Nothing to do cause our crypto accelerator provide a true random
* generator
*/
}
static int RAND_zencod_rand_bytes(unsigned char *buf, int num)
{
zen_nb_t r;
CHEESE();
if (!zencod_dso) {
ENGINEerr(ZENCOD_F_ZENCOD_RAND, ZENCOD_R_NOT_LOADED);
return 0;
}
ptr_zencod_init_number(&r, num * 8, buf);
if (ptr_zencod_rand_bytes(&r, ZENBRIDGE_RNG_DIRECT) < 0) {
PERROR("zenbridge_rand_bytes");
ENGINEerr(ZENCOD_F_ZENCOD_RAND, ZENCOD_R_REQUEST_FAILED);
return 0;
}
return 1;
}
static int RAND_zencod_rand_status(void)
{
CHEESE();
return 1;
}
/*
* This stuff is needed if this ENGINE is being compiled into a
* self-contained shared-library.
*/
# ifdef ENGINE_DYNAMIC_SUPPORT
static int bind_fn(ENGINE *e, const char *id)
{
if (id && (strcmp(id, engine_zencod_id) != 0)) {
return 0;
}
if (!bind_helper(e)) {
return 0;
}
return 1;
}
IMPLEMENT_DYNAMIC_CHECK_FN()
IMPLEMENT_DYNAMIC_BIND_FN(bind_fn)
# endif /* ENGINE_DYNAMIC_SUPPORT */
/*
* Adding "Digest" and "Cipher" tools ...
* This is in development ... ;-)
* In orfer to code this, i refer to hw_openbsd_dev_crypto and openssl engine made by Geoff Thorpe (if i'm rigth),
* and evp, sha md5 definitions etc ...
*/
/* First add some include ... */
# include <openssl/evp.h>
# include <openssl/sha.h>
# include <openssl/md5.h>
# include <openssl/rc4.h>
# include <openssl/des.h>
/* Some variables declaration ... */
/*
* DONS: Disable symetric computation except DES and 3DES, but let part
* of the code
*/
/* static int engine_digest_nids [ ] = { NID_sha1, NID_md5 } ; */
static int engine_digest_nids[] = { };
static int engine_digest_nids_num = 0;
/*
* static int engine_cipher_nids [ ] = { NID_rc4, NID_rc4_40, NID_des_cbc,
* NID_des_ede3_cbc } ;
*/
static int engine_cipher_nids[] = { NID_des_cbc, NID_des_ede3_cbc };
static int engine_cipher_nids_num = 2;
/* Function prototype ... */
/* SHA stuff */
static int engine_sha1_init(EVP_MD_CTX *ctx);
static int engine_sha1_update(EVP_MD_CTX *ctx, const void *data,
unsigned long count);
static int engine_sha1_final(EVP_MD_CTX *ctx, unsigned char *md);
/* MD5 stuff */
static int engine_md5_init(EVP_MD_CTX *ctx);
static int engine_md5_update(EVP_MD_CTX *ctx, const void *data,
unsigned long count);
static int engine_md5_final(EVP_MD_CTX *ctx, unsigned char *md);
static int engine_md_cleanup(EVP_MD_CTX *ctx);
static int engine_md_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from);
/* RC4 Stuff */
static int engine_rc4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc);
static int engine_rc4_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, unsigned int inl);
/* DES Stuff */
static int engine_des_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc);
static int engine_des_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, unsigned int inl);
/* 3DES Stuff */
static int engine_des_ede3_init_key(EVP_CIPHER_CTX *ctx,
const unsigned char *key,
const unsigned char *iv, int enc);
static int engine_des_ede3_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in,
unsigned int inl);
static int engine_cipher_cleanup(EVP_CIPHER_CTX *ctx); /* cleanup ctx */
/* The one for SHA ... */
static const EVP_MD engine_sha1_md = {
NID_sha1,
NID_sha1WithRSAEncryption,
SHA_DIGEST_LENGTH,
EVP_MD_FLAG_ONESHOT,
/*
* 0,
*//*
* EVP_MD_FLAG_ONESHOT = x0001 digest can only handle a single block *
* XXX: set according to device info ...
*/
engine_sha1_init,
engine_sha1_update,
engine_sha1_final,
engine_md_copy, /* dev_crypto_sha_copy */
engine_md_cleanup, /* dev_crypto_sha_cleanup */
EVP_PKEY_RSA_method,
SHA_CBLOCK,
/* sizeof ( EVP_MD * ) + sizeof ( SHA_CTX ) */
sizeof(ZEN_MD_DATA)
/*
* sizeof ( MD_CTX_DATA ) The message digest data structure ...
*/
};
/* The one for MD5 ... */
static const EVP_MD engine_md5_md = {
NID_md5,
NID_md5WithRSAEncryption,
MD5_DIGEST_LENGTH,
EVP_MD_FLAG_ONESHOT,
/*
* 0,
*//*
* EVP_MD_FLAG_ONESHOT = x0001 digest can only handle a single block *
* XXX: set according to device info ...
*/
engine_md5_init,
engine_md5_update,
engine_md5_final,
engine_md_copy, /* dev_crypto_md5_copy */
engine_md_cleanup, /* dev_crypto_md5_cleanup */
EVP_PKEY_RSA_method,
MD5_CBLOCK,
/* sizeof ( EVP_MD * ) + sizeof ( MD5_CTX ) */
sizeof(ZEN_MD_DATA)
/*
* sizeof ( MD_CTX_DATA ) The message digest data structure ...
*/
};
/* The one for RC4 ... */
# define EVP_RC4_KEY_SIZE 16
/* Try something static ... */
typedef struct {
unsigned int len;
unsigned int first;
unsigned char rc4_state[260];
} NEW_ZEN_RC4_KEY;
# define rc4_data(ctx) ( (EVP_RC4_KEY *) ( ctx )->cipher_data )
static const EVP_CIPHER engine_rc4 = {
NID_rc4,
1,
16, /* EVP_RC4_KEY_SIZE should be 128 bits */
0, /* FIXME: key should be up to 256 bytes */
EVP_CIPH_VARIABLE_LENGTH,
engine_rc4_init_key,
engine_rc4_cipher,
engine_cipher_cleanup,
sizeof(NEW_ZEN_RC4_KEY),
NULL,
NULL,
NULL
};
/* The one for RC4_40 ... */
static const EVP_CIPHER engine_rc4_40 = {
NID_rc4_40,
1,
5, /* 40 bits */
0,
EVP_CIPH_VARIABLE_LENGTH,
engine_rc4_init_key,
engine_rc4_cipher,
engine_cipher_cleanup,
sizeof(NEW_ZEN_RC4_KEY),
NULL,
NULL,
NULL
};
/* The one for DES ... */
/* Try something static ... */
typedef struct {
unsigned char des_key[24];
unsigned char des_iv[8];
} ZEN_DES_KEY;
static const EVP_CIPHER engine_des_cbc = {
NID_des_cbc,
8, 8, 8,
0 | EVP_CIPH_CBC_MODE,
engine_des_init_key,
engine_des_cbc_cipher,
engine_cipher_cleanup,
sizeof(ZEN_DES_KEY),
EVP_CIPHER_set_asn1_iv,
EVP_CIPHER_get_asn1_iv,
NULL,
NULL
};
/* The one for 3DES ... */
/* Try something static ... */
typedef struct {
unsigned char des3_key[24];
unsigned char des3_iv[8];
} ZEN_3DES_KEY;
# define des_data(ctx) ( (DES_EDE_KEY *) ( ctx )->cipher_data )
static const EVP_CIPHER engine_des_ede3_cbc = {
NID_des_ede3_cbc,
8, 8, 8,
0 | EVP_CIPH_CBC_MODE,
engine_des_ede3_init_key,
engine_des_ede3_cbc_cipher,
engine_cipher_cleanup,
sizeof(ZEN_3DES_KEY),
EVP_CIPHER_set_asn1_iv,
EVP_CIPHER_get_asn1_iv,
NULL,
NULL
};
/* General function cloned on hw_openbsd_dev_crypto one ... */
static int engine_digests(ENGINE *e, const EVP_MD **digest, const int **nids,
int nid)
{
# ifdef DEBUG_ZENCOD_MD
fprintf(stderr, "\t=>Function : static int engine_digests () called !\n");
# endif
if (!digest) {
/* We are returning a list of supported nids */
*nids = engine_digest_nids;
return engine_digest_nids_num;
}
/* We are being asked for a specific digest */
if (nid == NID_md5) {
*digest = &engine_md5_md;
} else if (nid == NID_sha1) {
*digest = &engine_sha1_md;
} else {
*digest = NULL;
return 0;
}
return 1;
}
/*
* SHA stuff Functions
*/
static int engine_sha1_init(EVP_MD_CTX *ctx)
{
int to_return = 0;
/* Test with zenbridge library ... */
to_return = ptr_zencod_sha1_init((ZEN_MD_DATA *)ctx->md_data);
to_return = !to_return;
return to_return;
}
static int engine_sha1_update(EVP_MD_CTX *ctx, const void *data,
unsigned long count)
{
zen_nb_t input;
int to_return = 0;
/* Convert parameters ... */
input.len = count;
input.data = (unsigned char *)data;
/* Test with zenbridge library ... */
to_return =
ptr_zencod_sha1_update((ZEN_MD_DATA *)ctx->md_data,
(const zen_nb_t *)&input);
to_return = !to_return;
return to_return;
}
static int engine_sha1_final(EVP_MD_CTX *ctx, unsigned char *md)
{
zen_nb_t output;
int to_return = 0;
/* Convert parameters ... */
output.len = SHA_DIGEST_LENGTH;
output.data = md;
/* Test with zenbridge library ... */
to_return =
ptr_zencod_sha1_do_final((ZEN_MD_DATA *)ctx->md_data,
(zen_nb_t *) & output);
to_return = !to_return;
return to_return;
}
/*
* MD5 stuff Functions
*/
static int engine_md5_init(EVP_MD_CTX *ctx)
{
int to_return = 0;
/* Test with zenbridge library ... */
to_return = ptr_zencod_md5_init((ZEN_MD_DATA *)ctx->md_data);
to_return = !to_return;
return to_return;
}
static int engine_md5_update(EVP_MD_CTX *ctx, const void *data,
unsigned long count)
{
zen_nb_t input;
int to_return = 0;
/* Convert parameters ... */
input.len = count;
input.data = (unsigned char *)data;
/* Test with zenbridge library ... */
to_return =
ptr_zencod_md5_update((ZEN_MD_DATA *)ctx->md_data,
(const zen_nb_t *)&input);
to_return = !to_return;
return to_return;
}
static int engine_md5_final(EVP_MD_CTX *ctx, unsigned char *md)
{
zen_nb_t output;
int to_return = 0;
/* Convert parameters ... */
output.len = MD5_DIGEST_LENGTH;
output.data = md;
/* Test with zenbridge library ... */
to_return =
ptr_zencod_md5_do_final((ZEN_MD_DATA *)ctx->md_data,
(zen_nb_t *) & output);
to_return = !to_return;
return to_return;
}
static int engine_md_cleanup(EVP_MD_CTX *ctx)
{
ZEN_MD_DATA *zen_md_data = (ZEN_MD_DATA *)ctx->md_data;
if (zen_md_data->HashBuffer != NULL) {
OPENSSL_free(zen_md_data->HashBuffer);
zen_md_data->HashBufferSize = 0;
ctx->md_data = NULL;
}
return 1;
}
static int engine_md_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from)
{
const ZEN_MD_DATA *from_md = (ZEN_MD_DATA *)from->md_data;
ZEN_MD_DATA *to_md = (ZEN_MD_DATA *)to->md_data;
to_md->HashBuffer = OPENSSL_malloc(from_md->HashBufferSize);
memcpy(to_md->HashBuffer, from_md->HashBuffer, from_md->HashBufferSize);
return 1;
}
/* General function cloned on hw_openbsd_dev_crypto one ... */
static int engine_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
const int **nids, int nid)
{
if (!cipher) {
/* We are returning a list of supported nids */
*nids = engine_cipher_nids;
return engine_cipher_nids_num;
}
/* We are being asked for a specific cipher */
if (nid == NID_rc4) {
*cipher = &engine_rc4;
} else if (nid == NID_rc4_40) {
*cipher = &engine_rc4_40;
} else if (nid == NID_des_cbc) {
*cipher = &engine_des_cbc;
} else if (nid == NID_des_ede3_cbc) {
*cipher = &engine_des_ede3_cbc;
} else {
*cipher = NULL;
return 0;
}
return 1;
}
static int engine_rc4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
int to_return = 0;
int i = 0;
int nb = 0;
NEW_ZEN_RC4_KEY *tmp_rc4_key = NULL;
tmp_rc4_key = (NEW_ZEN_RC4_KEY *) (ctx->cipher_data);
tmp_rc4_key->first = 0;
tmp_rc4_key->len = ctx->key_len;
tmp_rc4_key->rc4_state[0] = 0x00;
tmp_rc4_key->rc4_state[2] = 0x00;
nb = 256 / ctx->key_len;
for (i = 0; i < nb; i++) {
memcpy(&(tmp_rc4_key->rc4_state[4 + i * ctx->key_len]), key,
ctx->key_len);
}
to_return = 1;
return to_return;
}
static int engine_rc4_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, unsigned int in_len)
{
zen_nb_t output, input;
zen_nb_t rc4key;
int to_return = 0;
NEW_ZEN_RC4_KEY *tmp_rc4_key = NULL;
/* Convert parameters ... */
input.len = in_len;
input.data = (unsigned char *)in;
output.len = in_len;
output.data = (unsigned char *)out;
tmp_rc4_key = ((NEW_ZEN_RC4_KEY *) (ctx->cipher_data));
rc4key.len = 260;
rc4key.data = &(tmp_rc4_key->rc4_state[0]);
/* Test with zenbridge library ... */
to_return =
ptr_zencod_rc4_cipher(&output, &input, (const zen_nb_t *)&rc4key,
&(tmp_rc4_key->rc4_state[0]),
&(tmp_rc4_key->rc4_state[3]),
!tmp_rc4_key->first);
to_return = !to_return;
/* Update encryption state ... */
tmp_rc4_key->first = 1;
tmp_rc4_key = NULL;
return to_return;
}
static int engine_des_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
ZEN_DES_KEY *tmp_des_key = NULL;
int to_return = 0;
tmp_des_key = (ZEN_DES_KEY *) (ctx->cipher_data);
memcpy(&(tmp_des_key->des_key[0]), key, 8);
memcpy(&(tmp_des_key->des_key[8]), key, 8);
memcpy(&(tmp_des_key->des_key[16]), key, 8);
memcpy(&(tmp_des_key->des_iv[0]), iv, 8);
to_return = 1;
return to_return;
}
static int engine_des_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, unsigned int inl)
{
zen_nb_t output, input;
zen_nb_t deskey_1, deskey_2, deskey_3, iv;
int to_return = 0;
/* Convert parameters ... */
input.len = inl;
input.data = (unsigned char *)in;
output.len = inl;
output.data = out;
/* Set key parameters ... */
deskey_1.len = 8;
deskey_2.len = 8;
deskey_3.len = 8;
deskey_1.data =
(unsigned char *)((ZEN_DES_KEY *) (ctx->cipher_data))->des_key;
deskey_2.data =
(unsigned char *)&((ZEN_DES_KEY *) (ctx->cipher_data))->des_key[8];
deskey_3.data =
(unsigned char *)&((ZEN_DES_KEY *) (ctx->cipher_data))->des_key[16];
/* Key correct iv ... */
memcpy(((ZEN_DES_KEY *) (ctx->cipher_data))->des_iv, ctx->iv, 8);
iv.len = 8;
iv.data = (unsigned char *)((ZEN_DES_KEY *) (ctx->cipher_data))->des_iv;
if (ctx->encrypt == 0) {
memcpy(ctx->iv, &(input.data[input.len - 8]), 8);
}
/* Test with zenbridge library ... */
to_return = ptr_zencod_xdes_cipher(&output, &input,
(zen_nb_t *) & deskey_1,
(zen_nb_t *) & deskey_2,
(zen_nb_t *) & deskey_3, &iv,
ctx->encrypt);
to_return = !to_return;
/*
* But we need to set up the rigth iv ... Test ENCRYPT or DECRYPT mode to
* set iv ...
*/
if (ctx->encrypt == 1) {
memcpy(ctx->iv, &(output.data[output.len - 8]), 8);
}
return to_return;
}
static int engine_des_ede3_init_key(EVP_CIPHER_CTX *ctx,
const unsigned char *key,
const unsigned char *iv, int enc)
{
ZEN_3DES_KEY *tmp_3des_key = NULL;
int to_return = 0;
tmp_3des_key = (ZEN_3DES_KEY *) (ctx->cipher_data);
memcpy(&(tmp_3des_key->des3_key[0]), key, 24);
memcpy(&(tmp_3des_key->des3_iv[0]), iv, 8);
to_return = 1;
return to_return;
}
static int engine_des_ede3_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in,
unsigned int in_len)
{
zen_nb_t output, input;
zen_nb_t deskey_1, deskey_2, deskey_3, iv;
int to_return = 0;
/* Convert parameters ... */
input.len = in_len;
input.data = (unsigned char *)in;
output.len = in_len;
output.data = out;
/* Set key ... */
deskey_1.len = 8;
deskey_2.len = 8;
deskey_3.len = 8;
deskey_1.data =
(unsigned char *)((ZEN_3DES_KEY *) (ctx->cipher_data))->des3_key;
deskey_2.data =
(unsigned char *)&((ZEN_3DES_KEY *) (ctx->cipher_data))->des3_key[8];
deskey_3.data =
(unsigned char *)&((ZEN_3DES_KEY *) (ctx->cipher_data))->des3_key[16];
/* Key correct iv ... */
memcpy(((ZEN_3DES_KEY *) (ctx->cipher_data))->des3_iv, ctx->iv, 8);
iv.len = 8;
iv.data = (unsigned char *)((ZEN_3DES_KEY *) (ctx->cipher_data))->des3_iv;
if (ctx->encrypt == 0) {
memcpy(ctx->iv, &(input.data[input.len - 8]), 8);
}
/* Test with zenbridge library ... */
to_return = ptr_zencod_xdes_cipher(&output, &input,
(zen_nb_t *) & deskey_1,
(zen_nb_t *) & deskey_2,
(zen_nb_t *) & deskey_3, &iv,
ctx->encrypt);
to_return = !to_return;
if (ctx->encrypt == 1) {
memcpy(ctx->iv, &(output.data[output.len - 8]), 8);
}
return to_return;
}
static int engine_cipher_cleanup(EVP_CIPHER_CTX *ctx)
{
/* Set the key pointer ... */
if (ctx->cipher->nid == NID_rc4 || ctx->cipher->nid == NID_rc4_40) {
} else if (ctx->cipher->nid == NID_des_cbc) {
} else if (ctx->cipher->nid == NID_des_ede3_cbc) {
}
return 1;
}
# endif /* !OPENSSL_NO_HW_ZENCOD */
#endif /* !OPENSSL_NO_HW */