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openssl/crypto/engine/hw_ubsec.c
Geoff Thorpe 2dc5383a20 This changes the existing hardware ENGINE implementations to dynamically 
declare their own error strings so that they can be more easily compiled as
external shared-libraries if desired. Also, each implementation has been
given canonical "dynamic" support at the base of each file and is only
built if the ENGINE_DYNAMIC_SUPPORT symbol is defined.

Also, use "void" prototypes rather than empty prototypes in engine_int.h.

This does not yet;
  (i) remove error strings when unloading,
 (ii) remove the redundant ENGINE_R_*** codes (though ENGINE_F_*** codes
      have gone), or
(iii) provide any instructions on how to build shared-library ENGINEs or
      use them.

All are on their way.
2001-09-03 21:33:00 +00:00

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/* crypto/engine/hw_ubsec.c */
/* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
* project 2000.
*
* Cloned shamelessly by Joe Tardo.
*/
/* ====================================================================
* Copyright (c) 1999 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).
*
*/
#include <stdio.h>
#include <openssl/crypto.h>
#include "cryptlib.h"
#include <openssl/dso.h>
#include <openssl/engine.h>
#ifndef OPENSSL_NO_HW
#ifndef OPENSSL_NO_HW_UBSEC
#ifdef FLAT_INC
#include "hw_ubsec.h"
#else
#include "vendor_defns/hw_ubsec.h"
#endif
static int ubsec_init(ENGINE *e);
static int ubsec_finish(ENGINE *e);
static int ubsec_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)());
static int ubsec_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
const BIGNUM *m, BN_CTX *ctx);
static int ubsec_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
const BIGNUM *q, const BIGNUM *dp,
const BIGNUM *dq, const BIGNUM *qinv, BN_CTX *ctx);
#ifndef OPENSSL_NO_RSA
static int ubsec_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa);
#endif
static int ubsec_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
#ifndef OPENSSL_NO_DSA
#if NOT_USED
static int ubsec_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);
static int ubsec_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a,
const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
BN_MONT_CTX *m_ctx);
#endif
static DSA_SIG *ubsec_dsa_do_sign(const unsigned char *dgst, int dlen, DSA *dsa);
static int ubsec_dsa_verify(const unsigned char *dgst, int dgst_len,
DSA_SIG *sig, DSA *dsa);
#endif
#ifndef OPENSSL_NO_DH
static int ubsec_mod_exp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a,
const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
BN_MONT_CTX *m_ctx);
static int ubsec_dh_compute_key(unsigned char *key,const BIGNUM *pub_key,DH *dh);
static int ubsec_dh_generate_key(DH *dh);
#endif
#if NOT_USED
static int ubsec_rand_bytes(unsigned char *buf, int num);
static int ubsec_rand_status(void);
#endif
#define UBSEC_CMD_SO_PATH ENGINE_CMD_BASE
static const ENGINE_CMD_DEFN ubsec_cmd_defns[] = {
{UBSEC_CMD_SO_PATH,
"SO_PATH",
"Specifies the path to the 'ubsec' shared library",
ENGINE_CMD_FLAG_STRING},
{0, NULL, NULL, 0}
};
#ifndef OPENSSL_NO_RSA
/* Our internal RSA_METHOD that we provide pointers to */
static RSA_METHOD ubsec_rsa =
{
"UBSEC RSA method",
NULL,
NULL,
NULL,
NULL,
ubsec_rsa_mod_exp,
ubsec_mod_exp_mont,
NULL,
NULL,
0,
NULL,
NULL,
NULL
};
#endif
#ifndef OPENSSL_NO_DSA
/* Our internal DSA_METHOD that we provide pointers to */
static DSA_METHOD ubsec_dsa =
{
"UBSEC DSA method",
ubsec_dsa_do_sign, /* dsa_do_sign */
NULL, /* dsa_sign_setup */
ubsec_dsa_verify, /* dsa_do_verify */
NULL, /* ubsec_dsa_mod_exp */ /* dsa_mod_exp */
NULL, /* ubsec_mod_exp_dsa */ /* bn_mod_exp */
NULL, /* init */
NULL, /* finish */
0, /* flags */
NULL /* app_data */
};
#endif
#ifndef OPENSSL_NO_DH
/* Our internal DH_METHOD that we provide pointers to */
static DH_METHOD ubsec_dh =
{
"UBSEC DH method",
ubsec_dh_generate_key,
ubsec_dh_compute_key,
ubsec_mod_exp_dh,
NULL,
NULL,
0,
NULL
};
#endif
#ifndef OPENSSL_NO_ERR
/* Error function codes for use in ubsec operation */
#define UBSEC_F_UBSEC_INIT 100
#define UBSEC_F_UBSEC_FINISH 101
#define UBSEC_F_UBSEC_CTRL 102
#define UBSEC_F_UBSEC_MOD_EXP 103
#define UBSEC_F_UBSEC_RSA_MOD_EXP 104
#define UBSEC_F_UBSEC_RSA_MOD_EXP_CRT 105
#define UBSEC_F_UBSEC_DSA_SIGN 106
#define UBSEC_F_UBSEC_DSA_VERIFY 107
/* Error reason codes */
#define UBSEC_R_ALREADY_LOADED 108
#define UBSEC_R_DSO_FAILURE 109
#define UBSEC_R_UNIT_FAILURE 110
#define UBSEC_R_NOT_LOADED 111
#define UBSEC_R_CTRL_COMMAND_NOT_IMPLEMENTED 112
#define UBSEC_R_SIZE_TOO_LARGE_OR_TOO_SMALL 113
#define UBSEC_R_BN_EXPAND_FAIL 114
#define UBSEC_R_REQUEST_FAILED 115
#define UBSEC_R_MISSING_KEY_COMPONENTS 116
static ERR_STRING_DATA ubsec_str_functs[] =
{
/* This first element is changed to match the dynamic 'lib' number */
{ERR_PACK(0,0,0), "ubsec engine code"},
{ERR_PACK(0,UBSEC_F_UBSEC_INIT,0), "ubsec_init"},
{ERR_PACK(0,UBSEC_F_UBSEC_FINISH,0), "ubsec_finish"},
{ERR_PACK(0,UBSEC_F_UBSEC_CTRL,0), "ubsec_ctrl"},
{ERR_PACK(0,UBSEC_F_UBSEC_MOD_EXP,0), "ubsec_mod_exp"},
{ERR_PACK(0,UBSEC_F_UBSEC_RSA_MOD_EXP,0), "ubsec_rsa_mod_exp"},
{ERR_PACK(0,UBSEC_F_UBSEC_RSA_MOD_EXP_CRT,0), "ubsec_rsa_mod_exp_crt"},
{ERR_PACK(0,UBSEC_F_UBSEC_DSA_SIGN,0), "ubsec_dsa_sign"},
{ERR_PACK(0,UBSEC_F_UBSEC_DSA_VERIFY,0), "ubsec_dsa_verify"},
/* Error reason codes */
{UBSEC_R_ALREADY_LOADED ,"already loaded"},
{UBSEC_R_DSO_FAILURE ,"DSO failure"},
{UBSEC_R_UNIT_FAILURE ,"unit failure"},
{UBSEC_R_NOT_LOADED ,"not loaded"},
{UBSEC_R_CTRL_COMMAND_NOT_IMPLEMENTED ,"ctrl command not implemented"},
{UBSEC_R_SIZE_TOO_LARGE_OR_TOO_SMALL ,"size too large or too small"},
{UBSEC_R_BN_EXPAND_FAIL ,"bn_expand fail"},
{UBSEC_R_REQUEST_FAILED ,"request failed"},
{UBSEC_R_MISSING_KEY_COMPONENTS ,"missing key components"},
{0,NULL}
};
/* The library number we obtain dynamically from the ERR code */
static int ubsec_err_lib = -1;
#define UBSECerr(f,r) ERR_PUT_error(ubsec_err_lib,(f),(r),__FILE__,__LINE__)
static void ubsec_load_error_strings(void)
{
if(ubsec_err_lib < 0)
{
if((ubsec_err_lib = ERR_get_next_error_library()) <= 0)
return;
ubsec_str_functs[0].error = ERR_PACK(ubsec_err_lib,0,0);
ERR_load_strings(ubsec_err_lib, ubsec_str_functs);
}
}
#else
#define UBSECerr(f,r) /* NOP */
static void ubsec_load_error_strings(void) { } /* NOP */
#endif
/* Constants used when creating the ENGINE */
static const char *engine_ubsec_id = "ubsec";
static const char *engine_ubsec_name = "UBSEC hardware engine support";
/* This internal function is used by ENGINE_ubsec() and possibly by the
* "dynamic" ENGINE support too */
static int bind_helper(ENGINE *e)
{
#ifndef OPENSSL_NO_RSA
const RSA_METHOD *meth1;
#endif
#ifndef OPENSSL_NO_DH
#ifndef HAVE_UBSEC_DH
const DH_METHOD *meth3;
#endif /* HAVE_UBSEC_DH */
#endif
if(!ENGINE_set_id(e, engine_ubsec_id) ||
!ENGINE_set_name(e, engine_ubsec_name) ||
#ifndef OPENSSL_NO_RSA
!ENGINE_set_RSA(e, &ubsec_rsa) ||
#endif
#ifndef OPENSSL_NO_DSA
!ENGINE_set_DSA(e, &ubsec_dsa) ||
#endif
#ifndef OPENSSL_NO_DH
!ENGINE_set_DH(e, &ubsec_dh) ||
#endif
!ENGINE_set_BN_mod_exp(e, ubsec_mod_exp) ||
!ENGINE_set_BN_mod_exp_crt(e, ubsec_mod_exp_crt) ||
!ENGINE_set_init_function(e, ubsec_init) ||
!ENGINE_set_finish_function(e, ubsec_finish) ||
!ENGINE_set_ctrl_function(e, ubsec_ctrl) ||
!ENGINE_set_cmd_defns(e, ubsec_cmd_defns))
return 0;
#ifndef OPENSSL_NO_RSA
/* We know that the "PKCS1_SSLeay()" functions hook properly
* to the Broadcom-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();
ubsec_rsa.rsa_pub_enc = meth1->rsa_pub_enc;
ubsec_rsa.rsa_pub_dec = meth1->rsa_pub_dec;
ubsec_rsa.rsa_priv_enc = meth1->rsa_priv_enc;
ubsec_rsa.rsa_priv_dec = meth1->rsa_priv_dec;
#endif
#ifndef OPENSSL_NO_DH
#ifndef HAVE_UBSEC_DH
/* Much the same for Diffie-Hellman */
meth3 = DH_OpenSSL();
ubsec_dh.generate_key = meth3->generate_key;
ubsec_dh.compute_key = meth3->compute_key;
#endif /* HAVE_UBSEC_DH */
#endif
/* Ensure the ubsec error handling is set up */
ubsec_load_error_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!!!) */
ENGINE *ENGINE_ubsec(void)
{
ENGINE *ret = ENGINE_new();
if(!ret)
return NULL;
if(!bind_helper(ret))
{
ENGINE_free(ret);
return NULL;
}
return ret;
}
/* This is a process-global DSO handle used for loading and unloading
* the UBSEC 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 *ubsec_dso = NULL;
/* These are the function pointers that are (un)set when the library has
* successfully (un)loaded. */
static t_UBSEC_ubsec_bytes_to_bits *p_UBSEC_ubsec_bytes_to_bits = NULL;
static t_UBSEC_ubsec_bits_to_bytes *p_UBSEC_ubsec_bits_to_bytes = NULL;
static t_UBSEC_ubsec_open *p_UBSEC_ubsec_open = NULL;
static t_UBSEC_ubsec_close *p_UBSEC_ubsec_close = NULL;
#ifndef OPENSSL_NO_DH
static t_UBSEC_diffie_hellman_generate_ioctl
*p_UBSEC_diffie_hellman_generate_ioctl = NULL;
static t_UBSEC_diffie_hellman_agree_ioctl *p_UBSEC_diffie_hellman_agree_ioctl = NULL;
#endif
/* #ifndef OPENSSL_NO_RSA */
static t_UBSEC_rsa_mod_exp_ioctl *p_UBSEC_rsa_mod_exp_ioctl = NULL;
static t_UBSEC_rsa_mod_exp_crt_ioctl *p_UBSEC_rsa_mod_exp_crt_ioctl = NULL;
/* #endif */
#ifndef OPENSSL_NO_DSA
static t_UBSEC_dsa_sign_ioctl *p_UBSEC_dsa_sign_ioctl = NULL;
static t_UBSEC_dsa_verify_ioctl *p_UBSEC_dsa_verify_ioctl = NULL;
#endif
static t_UBSEC_math_accelerate_ioctl *p_UBSEC_math_accelerate_ioctl = NULL;
static t_UBSEC_rng_ioctl *p_UBSEC_rng_ioctl = NULL;
/*
* These are the static string constants for the DSO file name and the function
* symbol names to bind to.
*/
static const char *UBSEC_LIBNAME = "ubsec";
static const char *UBSEC_F1 = "ubsec_bytes_to_bits";
static const char *UBSEC_F2 = "ubsec_bits_to_bytes";
static const char *UBSEC_F3 = "ubsec_open";
static const char *UBSEC_F4 = "ubsec_close";
#ifndef OPENSSL_NO_DH
static const char *UBSEC_F5 = "diffie_hellman_generate_ioctl";
static const char *UBSEC_F6 = "diffie_hellman_agree_ioctl";
#endif
/* #ifndef OPENSSL_NO_RSA */
static const char *UBSEC_F7 = "rsa_mod_exp_ioctl";
static const char *UBSEC_F8 = "rsa_mod_exp_crt_ioctl";
/* #endif */
#ifndef OPENSSL_NO_DSA
static const char *UBSEC_F9 = "dsa_sign_ioctl";
static const char *UBSEC_F10 = "dsa_verify_ioctl";
#endif
static const char *UBSEC_F11 = "math_accelerate_ioctl";
static const char *UBSEC_F12 = "rng_ioctl";
/* (de)initialisation functions. */
static int ubsec_init(ENGINE *e)
{
t_UBSEC_ubsec_bytes_to_bits *p1;
t_UBSEC_ubsec_bits_to_bytes *p2;
t_UBSEC_ubsec_open *p3;
t_UBSEC_ubsec_close *p4;
#ifndef OPENSSL_NO_DH
t_UBSEC_diffie_hellman_generate_ioctl *p5;
t_UBSEC_diffie_hellman_agree_ioctl *p6;
#endif
/* #ifndef OPENSSL_NO_RSA */
t_UBSEC_rsa_mod_exp_ioctl *p7;
t_UBSEC_rsa_mod_exp_crt_ioctl *p8;
/* #endif */
#ifndef OPENSSL_NO_DSA
t_UBSEC_dsa_sign_ioctl *p9;
t_UBSEC_dsa_verify_ioctl *p10;
#endif
t_UBSEC_math_accelerate_ioctl *p11;
t_UBSEC_rng_ioctl *p12;
int fd = 0;
if(ubsec_dso != NULL)
{
UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_ALREADY_LOADED);
goto err;
}
/*
* Attempt to load libubsec.so/ubsec.dll/whatever.
*/
ubsec_dso = DSO_load(NULL, UBSEC_LIBNAME, NULL, 0);
if(ubsec_dso == NULL)
{
UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_DSO_FAILURE);
goto err;
}
if (
!(p1 = (t_UBSEC_ubsec_bytes_to_bits *) DSO_bind_func(ubsec_dso, UBSEC_F1)) ||
!(p2 = (t_UBSEC_ubsec_bits_to_bytes *) DSO_bind_func(ubsec_dso, UBSEC_F2)) ||
!(p3 = (t_UBSEC_ubsec_open *) DSO_bind_func(ubsec_dso, UBSEC_F3)) ||
!(p4 = (t_UBSEC_ubsec_close *) DSO_bind_func(ubsec_dso, UBSEC_F4)) ||
#ifndef OPENSSL_NO_DH
!(p5 = (t_UBSEC_diffie_hellman_generate_ioctl *)
DSO_bind_func(ubsec_dso, UBSEC_F5)) ||
!(p6 = (t_UBSEC_diffie_hellman_agree_ioctl *)
DSO_bind_func(ubsec_dso, UBSEC_F6)) ||
#endif
/* #ifndef OPENSSL_NO_RSA */
!(p7 = (t_UBSEC_rsa_mod_exp_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F7)) ||
!(p8 = (t_UBSEC_rsa_mod_exp_crt_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F8)) ||
/* #endif */
#ifndef OPENSSL_NO_DSA
!(p9 = (t_UBSEC_dsa_sign_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F9)) ||
!(p10 = (t_UBSEC_dsa_verify_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F10)) ||
#endif
!(p11 = (t_UBSEC_math_accelerate_ioctl *)
DSO_bind_func(ubsec_dso, UBSEC_F11)) ||
!(p12 = (t_UBSEC_rng_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F12)))
{
UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_DSO_FAILURE);
goto err;
}
/* Copy the pointers */
p_UBSEC_ubsec_bytes_to_bits = p1;
p_UBSEC_ubsec_bits_to_bytes = p2;
p_UBSEC_ubsec_open = p3;
p_UBSEC_ubsec_close = p4;
#ifndef OPENSSL_NO_DH
p_UBSEC_diffie_hellman_generate_ioctl = p5;
p_UBSEC_diffie_hellman_agree_ioctl = p6;
#endif
#ifndef OPENSSL_NO_RSA
p_UBSEC_rsa_mod_exp_ioctl = p7;
p_UBSEC_rsa_mod_exp_crt_ioctl = p8;
#endif
#ifndef OPENSSL_NO_DSA
p_UBSEC_dsa_sign_ioctl = p9;
p_UBSEC_dsa_verify_ioctl = p10;
#endif
p_UBSEC_math_accelerate_ioctl = p11;
p_UBSEC_rng_ioctl = p12;
/* Perform an open to see if there's actually any unit running. */
if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) > 0)
{
p_UBSEC_ubsec_close(fd);
return 1;
}
else
{
UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
}
err:
if(ubsec_dso)
DSO_free(ubsec_dso);
p_UBSEC_ubsec_bytes_to_bits = NULL;
p_UBSEC_ubsec_bits_to_bytes = NULL;
p_UBSEC_ubsec_open = NULL;
p_UBSEC_ubsec_close = NULL;
#ifndef OPENSSL_NO_DH
p_UBSEC_diffie_hellman_generate_ioctl = NULL;
p_UBSEC_diffie_hellman_agree_ioctl = NULL;
#endif
#ifndef OPENSSL_NO_RSA
p_UBSEC_rsa_mod_exp_ioctl = NULL;
p_UBSEC_rsa_mod_exp_crt_ioctl = NULL;
#endif
#ifndef OPENSSL_NO_DSA
p_UBSEC_dsa_sign_ioctl = NULL;
p_UBSEC_dsa_verify_ioctl = NULL;
#endif
p_UBSEC_math_accelerate_ioctl = NULL;
p_UBSEC_rng_ioctl = NULL;
return 0;
}
static int ubsec_finish(ENGINE *e)
{
if(ubsec_dso == NULL)
{
UBSECerr(UBSEC_F_UBSEC_FINISH, UBSEC_R_NOT_LOADED);
return 0;
}
if(!DSO_free(ubsec_dso))
{
UBSECerr(UBSEC_F_UBSEC_FINISH, UBSEC_R_DSO_FAILURE);
return 0;
}
ubsec_dso = NULL;
p_UBSEC_ubsec_bytes_to_bits = NULL;
p_UBSEC_ubsec_bits_to_bytes = NULL;
p_UBSEC_ubsec_open = NULL;
p_UBSEC_ubsec_close = NULL;
#ifndef OPENSSL_NO_DH
p_UBSEC_diffie_hellman_generate_ioctl = NULL;
p_UBSEC_diffie_hellman_agree_ioctl = NULL;
#endif
#ifndef OPENSSL_NO_RSA
p_UBSEC_rsa_mod_exp_ioctl = NULL;
p_UBSEC_rsa_mod_exp_crt_ioctl = NULL;
#endif
#ifndef OPENSSL_NO_DSA
p_UBSEC_dsa_sign_ioctl = NULL;
p_UBSEC_dsa_verify_ioctl = NULL;
#endif
p_UBSEC_math_accelerate_ioctl = NULL;
p_UBSEC_rng_ioctl = NULL;
return 1;
}
static int ubsec_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)())
{
int initialised = ((ubsec_dso == NULL) ? 0 : 1);
switch(cmd)
{
case UBSEC_CMD_SO_PATH:
if(p == NULL)
{
UBSECerr(UBSEC_F_UBSEC_CTRL,ERR_R_PASSED_NULL_PARAMETER);
return 0;
}
if(initialised)
{
UBSECerr(UBSEC_F_UBSEC_CTRL,UBSEC_R_ALREADY_LOADED);
return 0;
}
UBSEC_LIBNAME = (const char *)p;
return 1;
default:
break;
}
UBSECerr(UBSEC_F_UBSEC_CTRL,UBSEC_R_CTRL_COMMAND_NOT_IMPLEMENTED);
return 0;
}
static int ubsec_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
const BIGNUM *m, BN_CTX *ctx)
{
int y_len = 0;
int fd;
if(ubsec_dso == NULL)
{
UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_NOT_LOADED);
return 0;
}
/* Check if hardware can't handle this argument. */
y_len = BN_num_bits(m);
if (y_len > 1024) {
UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_SIZE_TOO_LARGE_OR_TOO_SMALL);
return 0;
}
if(!bn_wexpand(r, m->top))
{
UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_BN_EXPAND_FAIL);
return 0;
}
memset(r->d, 0, BN_num_bytes(m));
if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
fd = 0;
UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
return 0;
}
if (p_UBSEC_rsa_mod_exp_ioctl(fd, (unsigned char *)a->d, BN_num_bits(a),
(unsigned char *)m->d, BN_num_bits(m), (unsigned char *)p->d,
BN_num_bits(p), (unsigned char *)r->d, &y_len) != 0)
{
UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_REQUEST_FAILED);
return 0;
}
p_UBSEC_ubsec_close(fd);
r->top = (BN_num_bits(m)+BN_BITS2-1)/BN_BITS2;
return 1;
}
#ifndef OPENSSL_NO_RSA
static int ubsec_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa)
{
BN_CTX *ctx;
int to_return = 0;
if((ctx = BN_CTX_new()) == NULL)
goto err;
if(!rsa->p || !rsa->q || !rsa->dmp1 || !rsa->dmq1 || !rsa->iqmp)
{
UBSECerr(UBSEC_F_UBSEC_RSA_MOD_EXP, UBSEC_R_MISSING_KEY_COMPONENTS);
goto err;
}
/*
* Do in software if argument is too large for hardware.
*/
if ((BN_num_bits(rsa->p)+BN_num_bits(rsa->q)) > 1024) {
const RSA_METHOD *meth = RSA_PKCS1_SSLeay();
to_return = (*meth->rsa_mod_exp)(r0, I, rsa);
} else {
to_return = ubsec_mod_exp_crt(r0, I, rsa->p, rsa->q, rsa->dmp1,
rsa->dmq1, rsa->iqmp, ctx);
}
err:
if(ctx)
BN_CTX_free(ctx);
return to_return;
}
#endif
static int ubsec_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
const BIGNUM *q, const BIGNUM *dp,
const BIGNUM *dq, const BIGNUM *qinv, BN_CTX *ctx)
{
int y_len,
m_len,
fd;
m_len = BN_num_bytes(p) + BN_num_bytes(q) + 1;
y_len = BN_num_bits(p) + BN_num_bits(q);
/* Check if hardware can't handle this argument. */
if (y_len > 1024) {
UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_SIZE_TOO_LARGE_OR_TOO_SMALL);
return 0;
}
if (!bn_wexpand(r, p->top + q->top + 1)) {
UBSECerr(UBSEC_F_UBSEC_RSA_MOD_EXP_CRT, UBSEC_R_BN_EXPAND_FAIL);
return 0;
}
if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
fd = 0;
UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
return 0;
}
if (p_UBSEC_rsa_mod_exp_crt_ioctl(fd,
(unsigned char *)a->d, BN_num_bits(a),
(unsigned char *)qinv->d, BN_num_bits(qinv),
(unsigned char *)dp->d, BN_num_bits(dp),
(unsigned char *)p->d, BN_num_bits(p),
(unsigned char *)dq->d, BN_num_bits(dq),
(unsigned char *)q->d, BN_num_bits(q),
(unsigned char *)r->d, &y_len) != 0) {
UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_REQUEST_FAILED);
return 0;
}
p_UBSEC_ubsec_close(fd);
r->top = (BN_num_bits(p) + BN_num_bits(q) + BN_BITS2 - 1)/BN_BITS2;
return 1;
}
#ifndef OPENSSL_NO_DSA
#if NOT_USED
static int ubsec_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 (!ubsec_mod_exp(rr,a1,p1,m,ctx)) goto end;
/* let t = a2 ^ p2 mod m */
if (!ubsec_mod_exp(&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 int ubsec_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a,
const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
BN_MONT_CTX *m_ctx)
{
return ubsec_mod_exp(r, a, p, m, ctx);
}
#endif
#endif
/*
* This function is aliased to mod_exp (with the mont stuff dropped).
*/
static int ubsec_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
{
int ret = 0;
#ifndef OPENSSL_NO_RSA
/* Do in software if the key is too large for the hardware. */
if (BN_num_bits(m) > 1024)
{
const RSA_METHOD *meth = RSA_PKCS1_SSLeay();
ret = (*meth->bn_mod_exp)(r, a, p, m, ctx, m_ctx);
}
else
#endif
{
ret = ubsec_mod_exp(r, a, p, m, ctx);
}
return ret;
}
#ifndef OPENSSL_NO_DH
/* This function is aliased to mod_exp (with the dh and mont dropped). */
static int ubsec_mod_exp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a,
const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
BN_MONT_CTX *m_ctx)
{
return ubsec_mod_exp(r, a, p, m, ctx);
}
#endif
#ifndef OPENSSL_NO_DSA
static DSA_SIG *ubsec_dsa_do_sign(const unsigned char *dgst, int dlen, DSA *dsa)
{
DSA_SIG *to_return = NULL;
int s_len = 160, r_len = 160, d_len, fd;
BIGNUM m, *r=NULL, *s=NULL;
BN_init(&m);
s = BN_new();
r = BN_new();
if ((s == NULL) || (r==NULL))
goto err;
d_len = p_UBSEC_ubsec_bytes_to_bits((unsigned char *)dgst, dlen);
if(!bn_wexpand(r, (160+BN_BITS2-1)/BN_BITS2) ||
(!bn_wexpand(s, (160+BN_BITS2-1)/BN_BITS2))) {
UBSECerr(UBSEC_F_UBSEC_DSA_SIGN, UBSEC_R_BN_EXPAND_FAIL);
goto err;
}
if (BN_bin2bn(dgst,dlen,&m) == NULL) {
UBSECerr(UBSEC_F_UBSEC_DSA_SIGN, UBSEC_R_BN_EXPAND_FAIL);
goto err;
}
if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
fd = 0;
UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
return 0;
}
if (p_UBSEC_dsa_sign_ioctl(fd, 0, /* compute hash before signing */
(unsigned char *)dgst, d_len,
NULL, 0, /* compute random value */
(unsigned char *)dsa->p->d, BN_num_bits(dsa->p),
(unsigned char *)dsa->q->d, BN_num_bits(dsa->q),
(unsigned char *)dsa->g->d, BN_num_bits(dsa->g),
(unsigned char *)dsa->priv_key->d, BN_num_bits(dsa->priv_key),
(unsigned char *)r->d, &r_len,
(unsigned char *)s->d, &s_len ) != 0) {
UBSECerr(UBSEC_F_UBSEC_DSA_SIGN, UBSEC_R_REQUEST_FAILED);
goto err;
}
p_UBSEC_ubsec_close(fd);
r->top = (160+BN_BITS2-1)/BN_BITS2;
s->top = (160+BN_BITS2-1)/BN_BITS2;
to_return = DSA_SIG_new();
if(to_return == NULL) {
UBSECerr(UBSEC_F_UBSEC_DSA_SIGN, UBSEC_R_BN_EXPAND_FAIL);
goto err;
}
to_return->r = r;
to_return->s = s;
err:
if (!to_return) {
if (r) BN_free(r);
if (s) BN_free(s);
}
BN_clear_free(&m);
return to_return;
}
static int ubsec_dsa_verify(const unsigned char *dgst, int dgst_len,
DSA_SIG *sig, DSA *dsa)
{
int v_len, d_len;
int to_return = 0;
int fd;
BIGNUM v;
BN_init(&v);
if(!bn_wexpand(&v, dsa->p->top)) {
UBSECerr(UBSEC_F_UBSEC_DSA_VERIFY ,UBSEC_R_BN_EXPAND_FAIL);
goto err;
}
v_len = BN_num_bits(dsa->p);
d_len = p_UBSEC_ubsec_bytes_to_bits((unsigned char *)dgst, dgst_len);
if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
fd = 0;
UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
return 0;
}
if (p_UBSEC_dsa_verify_ioctl(fd, 0, /* compute hash before signing */
(unsigned char *)dgst, d_len,
(unsigned char *)dsa->p->d, BN_num_bits(dsa->p),
(unsigned char *)dsa->q->d, BN_num_bits(dsa->q),
(unsigned char *)dsa->g->d, BN_num_bits(dsa->g),
(unsigned char *)dsa->pub_key->d, BN_num_bits(dsa->pub_key),
(unsigned char *)sig->r->d, BN_num_bits(sig->r),
(unsigned char *)sig->s->d, BN_num_bits(sig->s),
(unsigned char *)v.d, &v_len) != 0) {
UBSECerr(UBSEC_F_UBSEC_DSA_VERIFY , UBSEC_R_REQUEST_FAILED);
goto err;
}
p_UBSEC_ubsec_close(fd);
to_return = 1;
err:
BN_clear_free(&v);
return to_return;
}
#endif
#ifndef OPENSSL_NO_DH
static int ubsec_dh_compute_key (unsigned char *key,const BIGNUM *pub_key,DH *dh)
{
return 0;
}
static int ubsec_dh_generate_key (DH *dh)
{
return 0;
}
#endif
#ifdef NOT_USED
static int ubsec_rand_bytes(unsigned char *buf, int num)
{
return 0;
}
static int ubsec_rand_status(void)
{
return 0;
}
#endif
/* 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_ubsec_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 */
#endif /* !OPENSSL_NO_HW_UBSEC */
#endif /* !OPENSSL_NO_HW */
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