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openssl/engines/e_sureware.c
Geoff Thorpe 0e4aa0d2d2 As with RSA, which was modified recently, this change makes it possible to 
override key-generation implementations by placing handlers in the methods
for DSA and DH. Also, parameter generation for DSA and DH is possible by
another new handler for each method.
2003-01-15 02:01:55 +00:00

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/* Written by Corinne Dive-Reclus(cdive@baltimore.com)
*
*
* 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/)"
*
* Written by Corinne Dive-Reclus(cdive@baltimore.com)
*
* Copyright@2001 Baltimore Technologies Ltd.
* All right Reserved.
* *
* THIS FILE IS PROVIDED BY BALTIMORE TECHNOLOGIES ``AS IS'' AND *
* ANY EXPRESS 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 BALTIMORE TECHNOLOGIES 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. *
====================================================================*/
#include <stdio.h>
#include <string.h>
#include <openssl/crypto.h>
#include <openssl/pem.h>
#include <openssl/dso.h>
#include <openssl/engine.h>
#ifndef OPENSSL_NO_HW
#ifndef OPENSSL_NO_HW_SUREWARE
#ifdef FLAT_INC
#include "sureware.h"
#else
#include "vendor_defns/sureware.h"
#endif
#define SUREWARE_LIB_NAME "sureware engine"
#include "e_sureware_err.c"
static int surewarehk_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)());
static int surewarehk_destroy(ENGINE *e);
static int surewarehk_init(ENGINE *e);
static int surewarehk_finish(ENGINE *e);
static int surewarehk_modexp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
const BIGNUM *m, BN_CTX *ctx);
/* RSA stuff */
static int surewarehk_rsa_priv_dec(int flen,const unsigned char *from,unsigned char *to,
RSA *rsa,int padding);
static int surewarehk_rsa_sign(int flen,const unsigned char *from,unsigned char *to,
RSA *rsa,int padding);
/* RAND stuff */
static int surewarehk_rand_bytes(unsigned char *buf, int num);
static void surewarehk_rand_seed(const void *buf, int num);
static void surewarehk_rand_add(const void *buf, int num, double entropy);
/* KM stuff */
static EVP_PKEY *surewarehk_load_privkey(ENGINE *e, const char *key_id,
UI_METHOD *ui_method, void *callback_data);
static EVP_PKEY *surewarehk_load_pubkey(ENGINE *e, const char *key_id,
UI_METHOD *ui_method, void *callback_data);
static void surewarehk_ex_free(void *obj, void *item, CRYPTO_EX_DATA *ad,
int idx,long argl, void *argp);
#if 0
static void surewarehk_dh_ex_free(void *obj, void *item, CRYPTO_EX_DATA *ad,
int idx,long argl, void *argp);
#endif
#ifndef OPENSSL_NO_RSA
/* This function is aliased to mod_exp (with the mont stuff dropped). */
static int surewarehk_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
{
return surewarehk_modexp(r, a, p, m, ctx);
}
/* Our internal RSA_METHOD that we provide pointers to */
static RSA_METHOD surewarehk_rsa =
{
"SureWare RSA method",
NULL, /* pub_enc*/
NULL, /* pub_dec*/
surewarehk_rsa_sign, /* our rsa_sign is OpenSSL priv_enc*/
surewarehk_rsa_priv_dec, /* priv_dec*/
NULL, /*mod_exp*/
surewarehk_mod_exp_mont, /*mod_exp_mongomery*/
NULL, /* init*/
NULL, /* finish*/
0, /* RSA flag*/
NULL,
NULL, /* OpenSSL sign*/
NULL, /* OpenSSL verify*/
NULL /* keygen */
};
#endif
#ifndef OPENSSL_NO_DH
/* Our internal DH_METHOD that we provide pointers to */
/* This function is aliased to mod_exp (with the dh and mont dropped). */
static int surewarehk_modexp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a,
const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
{
return surewarehk_modexp(r, a, p, m, ctx);
}
static DH_METHOD surewarehk_dh =
{
"SureWare DH method",
NULL,/*gen_key*/
NULL,/*agree,*/
surewarehk_modexp_dh, /*dh mod exp*/
NULL, /* init*/
NULL, /* finish*/
0, /* flags*/
NULL,
NULL
};
#endif
static RAND_METHOD surewarehk_rand =
{
/* "SureWare RAND method", */
surewarehk_rand_seed,
surewarehk_rand_bytes,
NULL,/*cleanup*/
surewarehk_rand_add,
surewarehk_rand_bytes,
NULL,/*rand_status*/
};
#ifndef OPENSSL_NO_DSA
/* DSA stuff */
static DSA_SIG * surewarehk_dsa_do_sign(const unsigned char *dgst, int dlen, DSA *dsa);
static int surewarehk_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1,
BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m,
BN_CTX *ctx, BN_MONT_CTX *in_mont)
{
BIGNUM t;
int to_return = 0;
BN_init(&t);
/* let rr = a1 ^ p1 mod m */
if (!surewarehk_modexp(rr,a1,p1,m,ctx)) goto end;
/* let t = a2 ^ p2 mod m */
if (!surewarehk_modexp(&t,a2,p2,m,ctx)) goto end;
/* let rr = rr * t mod m */
if (!BN_mod_mul(rr,rr,&t,m,ctx)) goto end;
to_return = 1;
end:
BN_free(&t);
return to_return;
}
static DSA_METHOD surewarehk_dsa =
{
"SureWare DSA method",
surewarehk_dsa_do_sign,
NULL,/*sign setup*/
NULL,/*verify,*/
surewarehk_dsa_mod_exp,/*mod exp*/
NULL,/*bn mod exp*/
NULL, /*init*/
NULL,/*finish*/
0,
NULL,
NULL,
NULL
};
#endif
static const char *engine_sureware_id = "sureware";
static const char *engine_sureware_name = "SureWare hardware engine support";
/* Now, to our own code */
/* As this is only ever called once, there's no need for locking
* (indeed - the lock will already be held by our caller!!!) */
static int bind_sureware(ENGINE *e)
{
#ifndef OPENSSL_NO_RSA
const RSA_METHOD *meth1;
#endif
#ifndef OPENSSL_NO_DSA
const DSA_METHOD *meth2;
#endif
#ifndef OPENSSL_NO_DH
const DH_METHOD *meth3;
#endif
if(!ENGINE_set_id(e, engine_sureware_id) ||
!ENGINE_set_name(e, engine_sureware_name) ||
#ifndef OPENSSL_NO_RSA
!ENGINE_set_RSA(e, &surewarehk_rsa) ||
#endif
#ifndef OPENSSL_NO_DSA
!ENGINE_set_DSA(e, &surewarehk_dsa) ||
#endif
#ifndef OPENSSL_NO_DH
!ENGINE_set_DH(e, &surewarehk_dh) ||
#endif
!ENGINE_set_RAND(e, &surewarehk_rand) ||
!ENGINE_set_destroy_function(e, surewarehk_destroy) ||
!ENGINE_set_init_function(e, surewarehk_init) ||
!ENGINE_set_finish_function(e, surewarehk_finish) ||
!ENGINE_set_ctrl_function(e, surewarehk_ctrl) ||
!ENGINE_set_load_privkey_function(e, surewarehk_load_privkey) ||
!ENGINE_set_load_pubkey_function(e, surewarehk_load_pubkey))
return 0;
#ifndef OPENSSL_NO_RSA
/* We know that the "PKCS1_SSLeay()" functions hook properly
* to the cswift-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! */
meth1 = RSA_PKCS1_SSLeay();
if (meth1)
{
surewarehk_rsa.rsa_pub_enc = meth1->rsa_pub_enc;
surewarehk_rsa.rsa_pub_dec = meth1->rsa_pub_dec;
}
#endif
#ifndef OPENSSL_NO_DSA
/* Use the DSA_OpenSSL() method and just hook the mod_exp-ish
* bits. */
meth2 = DSA_OpenSSL();
if (meth2)
{
surewarehk_dsa.dsa_do_verify = meth2->dsa_do_verify;
}
#endif
#ifndef OPENSSL_NO_DH
/* Much the same for Diffie-Hellman */
meth3 = DH_OpenSSL();
if (meth3)
{
surewarehk_dh.generate_key = meth3->generate_key;
surewarehk_dh.compute_key = meth3->compute_key;
}
#endif
/* Ensure the sureware error handling is set up */
ERR_load_SUREWARE_strings();
return 1;
}
#ifndef OPENSSL_NO_DYNAMIC_ENGINE
static int bind_helper(ENGINE *e, const char *id)
{
if(id && (strcmp(id, engine_sureware_id) != 0))
return 0;
if(!bind_sureware(e))
return 0;
return 1;
}
IMPLEMENT_DYNAMIC_CHECK_FN()
IMPLEMENT_DYNAMIC_BIND_FN(bind_helper)
#else
static ENGINE *engine_sureware(void)
{
ENGINE *ret = ENGINE_new();
if(!ret)
return NULL;
if(!bind_sureware(ret))
{
ENGINE_free(ret);
return NULL;
}
return ret;
}
void ENGINE_load_sureware(void)
{
/* Copied from eng_[openssl|dyn].c */
ENGINE *toadd = engine_sureware();
if(!toadd) return;
ENGINE_add(toadd);
ENGINE_free(toadd);
ERR_clear_error();
}
#endif
/* This is a process-global DSO handle used for loading and unloading
* the SureWareHook 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 *surewarehk_dso = NULL;
#ifndef OPENSSL_NO_RSA
static int rsaHndidx = -1; /* Index for KM handle. Not really used yet. */
#endif
#ifndef OPENSSL_NO_DSA
static int dsaHndidx = -1; /* Index for KM handle. Not really used yet. */
#endif
/* These are the function pointers that are (un)set when the library has
* successfully (un)loaded. */
static SureWareHook_Init_t *p_surewarehk_Init = NULL;
static SureWareHook_Finish_t *p_surewarehk_Finish = NULL;
static SureWareHook_Rand_Bytes_t *p_surewarehk_Rand_Bytes = NULL;
static SureWareHook_Rand_Seed_t *p_surewarehk_Rand_Seed = NULL;
static SureWareHook_Load_Privkey_t *p_surewarehk_Load_Privkey = NULL;
static SureWareHook_Info_Pubkey_t *p_surewarehk_Info_Pubkey = NULL;
static SureWareHook_Load_Rsa_Pubkey_t *p_surewarehk_Load_Rsa_Pubkey = NULL;
static SureWareHook_Load_Dsa_Pubkey_t *p_surewarehk_Load_Dsa_Pubkey = NULL;
static SureWareHook_Free_t *p_surewarehk_Free=NULL;
static SureWareHook_Rsa_Priv_Dec_t *p_surewarehk_Rsa_Priv_Dec=NULL;
static SureWareHook_Rsa_Sign_t *p_surewarehk_Rsa_Sign=NULL;
static SureWareHook_Dsa_Sign_t *p_surewarehk_Dsa_Sign=NULL;
static SureWareHook_Mod_Exp_t *p_surewarehk_Mod_Exp=NULL;
/* Used in the DSO operations. */
static const char *surewarehk_LIBNAME = "SureWareHook";
static const char *n_surewarehk_Init = "SureWareHook_Init";
static const char *n_surewarehk_Finish = "SureWareHook_Finish";
static const char *n_surewarehk_Rand_Bytes="SureWareHook_Rand_Bytes";
static const char *n_surewarehk_Rand_Seed="SureWareHook_Rand_Seed";
static const char *n_surewarehk_Load_Privkey="SureWareHook_Load_Privkey";
static const char *n_surewarehk_Info_Pubkey="SureWareHook_Info_Pubkey";
static const char *n_surewarehk_Load_Rsa_Pubkey="SureWareHook_Load_Rsa_Pubkey";
static const char *n_surewarehk_Load_Dsa_Pubkey="SureWareHook_Load_Dsa_Pubkey";
static const char *n_surewarehk_Free="SureWareHook_Free";
static const char *n_surewarehk_Rsa_Priv_Dec="SureWareHook_Rsa_Priv_Dec";
static const char *n_surewarehk_Rsa_Sign="SureWareHook_Rsa_Sign";
static const char *n_surewarehk_Dsa_Sign="SureWareHook_Dsa_Sign";
static const char *n_surewarehk_Mod_Exp="SureWareHook_Mod_Exp";
static BIO *logstream = NULL;
/* SureWareHook library functions and mechanics - these are used by the
* higher-level functions further down. NB: As and where there's no
* error checking, take a look lower down where these functions are
* called, the checking and error handling is probably down there.
*/
static int threadsafe=1;
static int surewarehk_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)())
{
int to_return = 1;
switch(cmd)
{
case ENGINE_CTRL_SET_LOGSTREAM:
{
BIO *bio = (BIO *)p;
CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
if (logstream)
{
BIO_free(logstream);
logstream = NULL;
}
if (CRYPTO_add(&bio->references,1,CRYPTO_LOCK_BIO) > 1)
logstream = bio;
else
SUREWAREerr(SUREWARE_F_SUREWAREHK_CTRL,SUREWARE_R_BIO_WAS_FREED);
}
CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
break;
/* This will prevent the initialisation function from "installing"
* the mutex-handling callbacks, even if they are available from
* within the library (or were provided to the library from the
* calling application). This is to remove any baggage for
* applications not using multithreading. */
case ENGINE_CTRL_CHIL_NO_LOCKING:
CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
threadsafe = 0;
CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
break;
/* The command isn't understood by this engine */
default:
SUREWAREerr(SUREWARE_F_SUREWAREHK_CTRL,
ENGINE_R_CTRL_COMMAND_NOT_IMPLEMENTED);
to_return = 0;
break;
}
return to_return;
}
/* Destructor (complements the "ENGINE_surewarehk()" constructor) */
static int surewarehk_destroy(ENGINE *e)
{
ERR_unload_SUREWARE_strings();
return 1;
}
/* (de)initialisation functions. */
static int surewarehk_init(ENGINE *e)
{
char msg[64]="ENGINE_init";
SureWareHook_Init_t *p1=NULL;
SureWareHook_Finish_t *p2=NULL;
SureWareHook_Rand_Bytes_t *p3=NULL;
SureWareHook_Rand_Seed_t *p4=NULL;
SureWareHook_Load_Privkey_t *p5=NULL;
SureWareHook_Load_Rsa_Pubkey_t *p6=NULL;
SureWareHook_Free_t *p7=NULL;
SureWareHook_Rsa_Priv_Dec_t *p8=NULL;
SureWareHook_Rsa_Sign_t *p9=NULL;
SureWareHook_Dsa_Sign_t *p12=NULL;
SureWareHook_Info_Pubkey_t *p13=NULL;
SureWareHook_Load_Dsa_Pubkey_t *p14=NULL;
SureWareHook_Mod_Exp_t *p15=NULL;
if(surewarehk_dso != NULL)
{
SUREWAREerr(SUREWARE_F_SUREWAREHK_INIT,ENGINE_R_ALREADY_LOADED);
goto err;
}
/* Attempt to load libsurewarehk.so/surewarehk.dll/whatever. */
surewarehk_dso = DSO_load(NULL, surewarehk_LIBNAME, NULL, 0);
if(surewarehk_dso == NULL)
{
SUREWAREerr(SUREWARE_F_SUREWAREHK_INIT,ENGINE_R_DSO_FAILURE);
goto err;
}
if(!(p1=(SureWareHook_Init_t*)DSO_bind_func(surewarehk_dso, n_surewarehk_Init)) ||
!(p2=(SureWareHook_Finish_t*)DSO_bind_func(surewarehk_dso, n_surewarehk_Finish)) ||
!(p3=(SureWareHook_Rand_Bytes_t*)DSO_bind_func(surewarehk_dso, n_surewarehk_Rand_Bytes)) ||
!(p4=(SureWareHook_Rand_Seed_t*)DSO_bind_func(surewarehk_dso, n_surewarehk_Rand_Seed)) ||
!(p5=(SureWareHook_Load_Privkey_t*)DSO_bind_func(surewarehk_dso, n_surewarehk_Load_Privkey)) ||
!(p6=(SureWareHook_Load_Rsa_Pubkey_t*)DSO_bind_func(surewarehk_dso, n_surewarehk_Load_Rsa_Pubkey)) ||
!(p7=(SureWareHook_Free_t*)DSO_bind_func(surewarehk_dso, n_surewarehk_Free)) ||
!(p8=(SureWareHook_Rsa_Priv_Dec_t*)DSO_bind_func(surewarehk_dso, n_surewarehk_Rsa_Priv_Dec)) ||
!(p9=(SureWareHook_Rsa_Sign_t*)DSO_bind_func(surewarehk_dso, n_surewarehk_Rsa_Sign)) ||
!(p12=(SureWareHook_Dsa_Sign_t*)DSO_bind_func(surewarehk_dso, n_surewarehk_Dsa_Sign)) ||
!(p13=(SureWareHook_Info_Pubkey_t*)DSO_bind_func(surewarehk_dso, n_surewarehk_Info_Pubkey)) ||
!(p14=(SureWareHook_Load_Dsa_Pubkey_t*)DSO_bind_func(surewarehk_dso, n_surewarehk_Load_Dsa_Pubkey)) ||
!(p15=(SureWareHook_Mod_Exp_t*)DSO_bind_func(surewarehk_dso, n_surewarehk_Mod_Exp)))
{
SUREWAREerr(SUREWARE_F_SUREWAREHK_INIT,ENGINE_R_DSO_FAILURE);
goto err;
}
/* Copy the pointers */
p_surewarehk_Init = p1;
p_surewarehk_Finish = p2;
p_surewarehk_Rand_Bytes = p3;
p_surewarehk_Rand_Seed = p4;
p_surewarehk_Load_Privkey = p5;
p_surewarehk_Load_Rsa_Pubkey = p6;
p_surewarehk_Free = p7;
p_surewarehk_Rsa_Priv_Dec = p8;
p_surewarehk_Rsa_Sign = p9;
p_surewarehk_Dsa_Sign = p12;
p_surewarehk_Info_Pubkey = p13;
p_surewarehk_Load_Dsa_Pubkey = p14;
p_surewarehk_Mod_Exp = p15;
/* Contact the hardware and initialises it. */
if(p_surewarehk_Init(msg,threadsafe)==SUREWAREHOOK_ERROR_UNIT_FAILURE)
{
SUREWAREerr(SUREWARE_F_SUREWAREHK_INIT,SUREWARE_R_UNIT_FAILURE);
goto err;
}
if(p_surewarehk_Init(msg,threadsafe)==SUREWAREHOOK_ERROR_UNIT_FAILURE)
{
SUREWAREerr(SUREWARE_F_SUREWAREHK_INIT,SUREWARE_R_UNIT_FAILURE);
goto err;
}
/* try to load the default private key, if failed does not return a failure but
wait for an explicit ENGINE_load_privakey */
surewarehk_load_privkey(e,NULL,NULL,NULL);
/* Everything's fine. */
#ifndef OPENSSL_NO_RSA
if (rsaHndidx == -1)
rsaHndidx = RSA_get_ex_new_index(0,
"SureWareHook RSA key handle",
NULL, NULL, surewarehk_ex_free);
#endif
#ifndef OPENSSL_NO_DSA
if (dsaHndidx == -1)
dsaHndidx = DSA_get_ex_new_index(0,
"SureWareHook DSA key handle",
NULL, NULL, surewarehk_ex_free);
#endif
return 1;
err:
if(surewarehk_dso)
DSO_free(surewarehk_dso);
surewarehk_dso = NULL;
p_surewarehk_Init = NULL;
p_surewarehk_Finish = NULL;
p_surewarehk_Rand_Bytes = NULL;
p_surewarehk_Rand_Seed = NULL;
p_surewarehk_Load_Privkey = NULL;
p_surewarehk_Load_Rsa_Pubkey = NULL;
p_surewarehk_Free = NULL;
p_surewarehk_Rsa_Priv_Dec = NULL;
p_surewarehk_Rsa_Sign = NULL;
p_surewarehk_Dsa_Sign = NULL;
p_surewarehk_Info_Pubkey = NULL;
p_surewarehk_Load_Dsa_Pubkey = NULL;
p_surewarehk_Mod_Exp = NULL;
return 0;
}
static int surewarehk_finish(ENGINE *e)
{
int to_return = 1;
if(surewarehk_dso == NULL)
{
SUREWAREerr(SUREWARE_F_SUREWAREHK_FINISH,ENGINE_R_NOT_LOADED);
to_return = 0;
goto err;
}
p_surewarehk_Finish();
if(!DSO_free(surewarehk_dso))
{
SUREWAREerr(SUREWARE_F_SUREWAREHK_FINISH,ENGINE_R_DSO_FAILURE);
to_return = 0;
goto err;
}
err:
if (logstream)
BIO_free(logstream);
surewarehk_dso = NULL;
p_surewarehk_Init = NULL;
p_surewarehk_Finish = NULL;
p_surewarehk_Rand_Bytes = NULL;
p_surewarehk_Rand_Seed = NULL;
p_surewarehk_Load_Privkey = NULL;
p_surewarehk_Load_Rsa_Pubkey = NULL;
p_surewarehk_Free = NULL;
p_surewarehk_Rsa_Priv_Dec = NULL;
p_surewarehk_Rsa_Sign = NULL;
p_surewarehk_Dsa_Sign = NULL;
p_surewarehk_Info_Pubkey = NULL;
p_surewarehk_Load_Dsa_Pubkey = NULL;
p_surewarehk_Mod_Exp = NULL;
return to_return;
}
static void surewarehk_error_handling(char *const msg,int func,int ret)
{
switch (ret)
{
case SUREWAREHOOK_ERROR_UNIT_FAILURE:
ENGINEerr(func,SUREWARE_R_UNIT_FAILURE);
break;
case SUREWAREHOOK_ERROR_FALLBACK:
ENGINEerr(func,SUREWARE_R_REQUEST_FALLBACK);
break;
case SUREWAREHOOK_ERROR_DATA_SIZE:
ENGINEerr(func,SUREWARE_R_SIZE_TOO_LARGE_OR_TOO_SMALL);
break;
case SUREWAREHOOK_ERROR_INVALID_PAD:
ENGINEerr(func,RSA_R_PADDING_CHECK_FAILED);
break;
default:
ENGINEerr(func,SUREWARE_R_REQUEST_FAILED);
break;
case 1:/*nothing*/
msg[0]='\0';
}
if (*msg)
{
ERR_add_error_data(1,msg);
if (logstream)
{
CRYPTO_w_lock(CRYPTO_LOCK_BIO);
BIO_write(logstream, msg, strlen(msg));
CRYPTO_w_unlock(CRYPTO_LOCK_BIO);
}
}
}
static int surewarehk_rand_bytes(unsigned char *buf, int num)
{
int ret=0;
char msg[64]="ENGINE_rand_bytes";
if(!p_surewarehk_Rand_Bytes)
{
SUREWAREerr(SUREWARE_F_SUREWAREHK_RAND_BYTES,ENGINE_R_NOT_INITIALISED);
}
else
{
ret = p_surewarehk_Rand_Bytes(msg,buf, num);
surewarehk_error_handling(msg,SUREWARE_F_SUREWAREHK_RAND_BYTES,ret);
}
return ret==1 ? 1 : 0;
}
static void surewarehk_rand_seed(const void *buf, int num)
{
int ret=0;
char msg[64]="ENGINE_rand_seed";
if(!p_surewarehk_Rand_Seed)
{
SUREWAREerr(SUREWARE_F_SUREWAREHK_RAND_SEED,ENGINE_R_NOT_INITIALISED);
}
else
{
ret = p_surewarehk_Rand_Seed(msg,buf, num);
surewarehk_error_handling(msg,SUREWARE_F_SUREWAREHK_RAND_SEED,ret);
}
}
static void surewarehk_rand_add(const void *buf, int num, double entropy)
{
surewarehk_rand_seed(buf,num);
}
static EVP_PKEY* sureware_load_public(ENGINE *e,const char *key_id,char *hptr,unsigned long el,char keytype)
{
EVP_PKEY *res = NULL;
#ifndef OPENSSL_NO_RSA
RSA *rsatmp = NULL;
#endif
#ifndef OPENSSL_NO_DSA
DSA *dsatmp=NULL;
#endif
char msg[64]="sureware_load_public";
int ret=0;
if(!p_surewarehk_Load_Rsa_Pubkey || !p_surewarehk_Load_Dsa_Pubkey)
{
SUREWAREerr(SUREWARE_F_SUREWAREHK_LOAD_PUBLIC_KEY,ENGINE_R_NOT_INITIALISED);
goto err;
}
switch (keytype)
{
#ifndef OPENSSL_NO_RSA
case 1: /*RSA*/
/* set private external reference */
rsatmp = RSA_new_method(e);
RSA_set_ex_data(rsatmp,rsaHndidx,hptr);
rsatmp->flags |= RSA_FLAG_EXT_PKEY;
/* set public big nums*/
rsatmp->e = BN_new();
rsatmp->n = BN_new();
bn_expand2(rsatmp->e, el/sizeof(BN_ULONG));
bn_expand2(rsatmp->n, el/sizeof(BN_ULONG));
if (!rsatmp->e || rsatmp->e->dmax!=(int)(el/sizeof(BN_ULONG))||
!rsatmp->n || rsatmp->n->dmax!=(int)(el/sizeof(BN_ULONG)))
goto err;
ret=p_surewarehk_Load_Rsa_Pubkey(msg,key_id,el,
(unsigned long *)rsatmp->n->d,
(unsigned long *)rsatmp->e->d);
surewarehk_error_handling(msg,SUREWARE_F_SUREWAREHK_LOAD_PUBLIC_KEY,ret);
if (ret!=1)
{
SUREWAREerr(SUREWARE_F_SUREWAREHK_LOAD_PRIVATE_KEY,ENGINE_R_FAILED_LOADING_PUBLIC_KEY);
goto err;
}
/* normalise pub e and pub n */
rsatmp->e->top=el/sizeof(BN_ULONG);
bn_fix_top(rsatmp->e);
rsatmp->n->top=el/sizeof(BN_ULONG);
bn_fix_top(rsatmp->n);
/* create an EVP object: engine + rsa key */
res = EVP_PKEY_new();
EVP_PKEY_assign_RSA(res, rsatmp);
break;
#endif
#ifndef OPENSSL_NO_DSA
case 2:/*DSA*/
/* set private/public external reference */
dsatmp = DSA_new_method(e);
DSA_set_ex_data(dsatmp,dsaHndidx,hptr);
/*dsatmp->flags |= DSA_FLAG_EXT_PKEY;*/
/* set public key*/
dsatmp->pub_key = BN_new();
dsatmp->p = BN_new();
dsatmp->q = BN_new();
dsatmp->g = BN_new();
bn_expand2(dsatmp->pub_key, el/sizeof(BN_ULONG));
bn_expand2(dsatmp->p, el/sizeof(BN_ULONG));
bn_expand2(dsatmp->q, 20/sizeof(BN_ULONG));
bn_expand2(dsatmp->g, el/sizeof(BN_ULONG));
if (!dsatmp->pub_key || dsatmp->pub_key->dmax!=(int)(el/sizeof(BN_ULONG))||
!dsatmp->p || dsatmp->p->dmax!=(int)(el/sizeof(BN_ULONG)) ||
!dsatmp->q || dsatmp->q->dmax!=20/sizeof(BN_ULONG) ||
!dsatmp->g || dsatmp->g->dmax!=(int)(el/sizeof(BN_ULONG)))
goto err;
ret=p_surewarehk_Load_Dsa_Pubkey(msg,key_id,el,
(unsigned long *)dsatmp->pub_key->d,
(unsigned long *)dsatmp->p->d,
(unsigned long *)dsatmp->q->d,
(unsigned long *)dsatmp->g->d);
surewarehk_error_handling(msg,SUREWARE_F_SUREWAREHK_LOAD_PUBLIC_KEY,ret);
if (ret!=1)
{
SUREWAREerr(SUREWARE_F_SUREWAREHK_LOAD_PRIVATE_KEY,ENGINE_R_FAILED_LOADING_PUBLIC_KEY);
goto err;
}
/* set parameters */
/* normalise pubkey and parameters in case of */
dsatmp->pub_key->top=el/sizeof(BN_ULONG);
bn_fix_top(dsatmp->pub_key);
dsatmp->p->top=el/sizeof(BN_ULONG);
bn_fix_top(dsatmp->p);
dsatmp->q->top=20/sizeof(BN_ULONG);
bn_fix_top(dsatmp->q);
dsatmp->g->top=el/sizeof(BN_ULONG);
bn_fix_top(dsatmp->g);
/* create an EVP object: engine + rsa key */
res = EVP_PKEY_new();
EVP_PKEY_assign_DSA(res, dsatmp);
break;
#endif
default:
SUREWAREerr(SUREWARE_F_SUREWAREHK_LOAD_PRIVATE_KEY,ENGINE_R_FAILED_LOADING_PRIVATE_KEY);
goto err;
}
return res;
err:
if (res)
EVP_PKEY_free(res);
#ifndef OPENSSL_NO_RSA
if (rsatmp)
RSA_free(rsatmp);
#endif
#ifndef OPENSSL_NO_DSA
if (dsatmp)
DSA_free(dsatmp);
#endif
return NULL;
}
static EVP_PKEY *surewarehk_load_privkey(ENGINE *e, const char *key_id,
UI_METHOD *ui_method, void *callback_data)
{
EVP_PKEY *res = NULL;
int ret=0;
unsigned long el=0;
char *hptr=NULL;
char keytype=0;
char msg[64]="ENGINE_load_privkey";
if(!p_surewarehk_Load_Privkey)
{
SUREWAREerr(SUREWARE_F_SUREWAREHK_LOAD_PRIVATE_KEY,ENGINE_R_NOT_INITIALISED);
}
else
{
ret=p_surewarehk_Load_Privkey(msg,key_id,&hptr,&el,&keytype);
if (ret!=1)
{
SUREWAREerr(SUREWARE_F_SUREWAREHK_LOAD_PRIVATE_KEY,ENGINE_R_FAILED_LOADING_PRIVATE_KEY);
ERR_add_error_data(1,msg);
}
else
res=sureware_load_public(e,key_id,hptr,el,keytype);
}
return res;
}
static EVP_PKEY *surewarehk_load_pubkey(ENGINE *e, const char *key_id,
UI_METHOD *ui_method, void *callback_data)
{
EVP_PKEY *res = NULL;
int ret=0;
unsigned long el=0;
char *hptr=NULL;
char keytype=0;
char msg[64]="ENGINE_load_pubkey";
if(!p_surewarehk_Info_Pubkey)
{
SUREWAREerr(SUREWARE_F_SUREWAREHK_LOAD_PUBLIC_KEY,ENGINE_R_NOT_INITIALISED);
}
else
{
/* call once to identify if DSA or RSA */
ret=p_surewarehk_Info_Pubkey(msg,key_id,&el,&keytype);
if (ret!=1)
{
SUREWAREerr(SUREWARE_F_SUREWAREHK_LOAD_PUBLIC_KEY,ENGINE_R_FAILED_LOADING_PUBLIC_KEY);
ERR_add_error_data(1,msg);
}
else
res=sureware_load_public(e,key_id,hptr,el,keytype);
}
return res;
}
/* This cleans up an RSA/DSA KM key(do not destroy the key into the hardware)
, called when ex_data is freed */
static void surewarehk_ex_free(void *obj, void *item, CRYPTO_EX_DATA *ad,
int idx,long argl, void *argp)
{
if(!p_surewarehk_Free)
{
SUREWAREerr(SUREWARE_F_SUREWAREHK_EX_FREE,ENGINE_R_NOT_INITIALISED);
}
else
p_surewarehk_Free((char *)item,0);
}
#if 0
/* not currently used (bug?) */
/* This cleans up an DH KM key (destroys the key into hardware),
called when ex_data is freed */
static void surewarehk_dh_ex_free(void *obj, void *item, CRYPTO_EX_DATA *ad,
int idx,long argl, void *argp)
{
if(!p_surewarehk_Free)
{
SUREWAREerr(SUREWARE_F_SUREWAREHK_EX_FREE,ENGINE_R_NOT_INITIALISED);
}
else
p_surewarehk_Free((char *)item,1);
}
#endif
/*
* return number of decrypted bytes
*/
#ifndef OPENSSL_NO_RSA
static int surewarehk_rsa_priv_dec(int flen,const unsigned char *from,unsigned char *to,
RSA *rsa,int padding)
{
int ret=0,tlen;
char *buf=NULL,*hptr=NULL;
char msg[64]="ENGINE_rsa_priv_dec";
if (!p_surewarehk_Rsa_Priv_Dec)
{
SUREWAREerr(SUREWARE_F_SUREWAREHK_RSA_PRIV_DEC,ENGINE_R_NOT_INITIALISED);
}
/* extract ref to private key */
else if (!(hptr=RSA_get_ex_data(rsa, rsaHndidx)))
{
SUREWAREerr(SUREWARE_F_SUREWAREHK_RSA_PRIV_DEC,SUREWARE_R_MISSING_KEY_COMPONENTS);
goto err;
}
/* analyse what padding we can do into the hardware */
if (padding==RSA_PKCS1_PADDING)
{
/* do it one shot */
ret=p_surewarehk_Rsa_Priv_Dec(msg,flen,(unsigned char *)from,&tlen,to,hptr,SUREWARE_PKCS1_PAD);
surewarehk_error_handling(msg,SUREWARE_F_SUREWAREHK_RSA_PRIV_DEC,ret);
if (ret!=1)
goto err;
ret=tlen;
}
else /* do with no padding into hardware */
{
ret=p_surewarehk_Rsa_Priv_Dec(msg,flen,(unsigned char *)from,&tlen,to,hptr,SUREWARE_NO_PAD);
surewarehk_error_handling(msg,SUREWARE_F_SUREWAREHK_RSA_PRIV_DEC,ret);
if (ret!=1)
goto err;
/* intermediate buffer for padding */
if ((buf=OPENSSL_malloc(tlen)) == NULL)
{
RSAerr(SUREWARE_F_SUREWAREHK_RSA_PRIV_DEC,ERR_R_MALLOC_FAILURE);
goto err;
}
memcpy(buf,to,tlen);/* transfert to into buf */
switch (padding) /* check padding in software */
{
#ifndef OPENSSL_NO_SHA
case RSA_PKCS1_OAEP_PADDING:
ret=RSA_padding_check_PKCS1_OAEP(to,tlen,(unsigned char *)buf,tlen,tlen,NULL,0);
break;
#endif
case RSA_SSLV23_PADDING:
ret=RSA_padding_check_SSLv23(to,tlen,(unsigned char *)buf,flen,tlen);
break;
case RSA_NO_PADDING:
ret=RSA_padding_check_none(to,tlen,(unsigned char *)buf,flen,tlen);
break;
default:
RSAerr(SUREWARE_F_SUREWAREHK_RSA_PRIV_DEC,RSA_R_UNKNOWN_PADDING_TYPE);
goto err;
}
if (ret < 0)
RSAerr(SUREWARE_F_SUREWAREHK_RSA_PRIV_DEC,RSA_R_PADDING_CHECK_FAILED);
}
err:
if (buf)
{
OPENSSL_cleanse(buf,tlen);
OPENSSL_free(buf);
}
return ret;
}
/*
* Does what OpenSSL rsa_priv_enc does.
*/
static int surewarehk_rsa_sign(int flen,const unsigned char *from,unsigned char *to,
RSA *rsa,int padding)
{
int ret=0,tlen;
char *hptr=NULL;
char msg[64]="ENGINE_rsa_sign";
if (!p_surewarehk_Rsa_Sign)
{
SUREWAREerr(SUREWARE_F_SUREWAREHK_RSA_PRIV_ENC,ENGINE_R_NOT_INITIALISED);
}
/* extract ref to private key */
else if (!(hptr=RSA_get_ex_data(rsa, rsaHndidx)))
{
SUREWAREerr(SUREWARE_F_SUREWAREHK_RSA_PRIV_ENC,SUREWARE_R_MISSING_KEY_COMPONENTS);
}
else
{
switch (padding)
{
case RSA_PKCS1_PADDING: /* do it in one shot */
ret=p_surewarehk_Rsa_Sign(msg,flen,(unsigned char *)from,&tlen,to,hptr,SUREWARE_PKCS1_PAD);
surewarehk_error_handling(msg,SUREWARE_F_SUREWAREHK_RSA_PRIV_ENC,ret);
break;
case RSA_NO_PADDING:
default:
RSAerr(SUREWARE_F_SUREWAREHK_RSA_PRIV_ENC,RSA_R_UNKNOWN_PADDING_TYPE);
}
}
return ret==1 ? tlen : ret;
}
#endif
#ifndef OPENSSL_NO_DSA
/* DSA sign and verify */
static DSA_SIG * surewarehk_dsa_do_sign(const unsigned char *from, int flen, DSA *dsa)
{
int ret=0;
char *hptr=NULL;
DSA_SIG *psign=NULL;
char msg[64]="ENGINE_dsa_do_sign";
if (!p_surewarehk_Dsa_Sign)
{
SUREWAREerr(SUREWARE_F_SUREWAREHK_DSA_DO_SIGN,ENGINE_R_NOT_INITIALISED);
}
/* extract ref to private key */
else if (!(hptr=DSA_get_ex_data(dsa, dsaHndidx)))
{
SUREWAREerr(SUREWARE_F_SUREWAREHK_DSA_DO_SIGN,SUREWARE_R_MISSING_KEY_COMPONENTS);
}
else
{
if((psign = DSA_SIG_new()) == NULL)
{
SUREWAREerr(SUREWARE_F_SUREWAREHK_DSA_DO_SIGN,ERR_R_MALLOC_FAILURE);
goto err;
}
psign->r=BN_new();
psign->s=BN_new();
bn_expand2(psign->r, 20/sizeof(BN_ULONG));
bn_expand2(psign->s, 20/sizeof(BN_ULONG));
if (!psign->r || psign->r->dmax!=20/sizeof(BN_ULONG) ||
!psign->s || psign->s->dmax!=20/sizeof(BN_ULONG))
goto err;
ret=p_surewarehk_Dsa_Sign(msg,flen,from,
(unsigned long *)psign->r->d,
(unsigned long *)psign->s->d,
hptr);
surewarehk_error_handling(msg,SUREWARE_F_SUREWAREHK_DSA_DO_SIGN,ret);
}
psign->r->top=20/sizeof(BN_ULONG);
bn_fix_top(psign->r);
psign->s->top=20/sizeof(BN_ULONG);
bn_fix_top(psign->s);
err:
if (psign)
{
DSA_SIG_free(psign);
psign=NULL;
}
return psign;
}
#endif
static int surewarehk_modexp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
const BIGNUM *m, BN_CTX *ctx)
{
int ret=0;
char msg[64]="ENGINE_modexp";
if (!p_surewarehk_Mod_Exp)
{
SUREWAREerr(SUREWARE_F_SUREWAREHK_MOD_EXP,ENGINE_R_NOT_INITIALISED);
}
else
{
bn_expand2(r,m->top);
if (r && r->dmax==m->top)
{
/* do it*/
ret=p_surewarehk_Mod_Exp(msg,
m->top*sizeof(BN_ULONG),
(unsigned long *)m->d,
p->top*sizeof(BN_ULONG),
(unsigned long *)p->d,
a->top*sizeof(BN_ULONG),
(unsigned long *)a->d,
(unsigned long *)r->d);
surewarehk_error_handling(msg,SUREWARE_F_SUREWAREHK_MOD_EXP,ret);
if (ret==1)
{
/* normalise result */
r->top=m->top;
bn_fix_top(r);
}
}
}
return ret;
}
#endif /* !OPENSSL_NO_HW_SureWare */
#endif /* !OPENSSL_NO_HW */
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