901 lines
27 KiB
C
901 lines
27 KiB
C
/* crypto/engine/hw_ibmca.c */
|
|
/*
|
|
* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL project
|
|
* 2000.
|
|
*/
|
|
/* ====================================================================
|
|
* 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).
|
|
*
|
|
*/
|
|
|
|
/* (C) COPYRIGHT International Business Machines Corp. 2001 */
|
|
|
|
#include <stdio.h>
|
|
#include <openssl/crypto.h>
|
|
#include <openssl/dso.h>
|
|
#include <openssl/engine.h>
|
|
|
|
#ifndef OPENSSL_NO_HW
|
|
# ifndef OPENSSL_NO_HW_IBMCA
|
|
|
|
# ifdef FLAT_INC
|
|
# include "ica_openssl_api.h"
|
|
# else
|
|
# include "vendor_defns/ica_openssl_api.h"
|
|
# endif
|
|
|
|
# define IBMCA_LIB_NAME "ibmca engine"
|
|
# include "hw_ibmca_err.c"
|
|
|
|
static int ibmca_destroy(ENGINE *e);
|
|
static int ibmca_init(ENGINE *e);
|
|
static int ibmca_finish(ENGINE *e);
|
|
static int ibmca_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f) ());
|
|
|
|
static const char *IBMCA_F1 = "icaOpenAdapter";
|
|
static const char *IBMCA_F2 = "icaCloseAdapter";
|
|
static const char *IBMCA_F3 = "icaRsaModExpo";
|
|
static const char *IBMCA_F4 = "icaRandomNumberGenerate";
|
|
static const char *IBMCA_F5 = "icaRsaCrt";
|
|
|
|
ICA_ADAPTER_HANDLE handle = 0;
|
|
|
|
/* BIGNUM stuff */
|
|
static int ibmca_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
|
|
const BIGNUM *m, BN_CTX *ctx);
|
|
|
|
static int ibmca_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
|
|
const BIGNUM *q, const BIGNUM *dmp1,
|
|
const BIGNUM *dmq1, const BIGNUM *iqmp,
|
|
BN_CTX *ctx);
|
|
|
|
# ifndef OPENSSL_NO_RSA
|
|
/* RSA stuff */
|
|
static int ibmca_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa);
|
|
# endif
|
|
|
|
/* This function is aliased to mod_exp (with the mont stuff dropped). */
|
|
static int ibmca_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
|
|
/* DSA stuff */
|
|
static int ibmca_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 ibmca_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a,
|
|
const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
|
|
BN_MONT_CTX *m_ctx);
|
|
# endif
|
|
|
|
# ifndef OPENSSL_NO_DH
|
|
/* DH stuff */
|
|
/* This function is alised to mod_exp (with the DH and mont dropped). */
|
|
static int ibmca_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);
|
|
# endif
|
|
|
|
/* RAND stuff */
|
|
static int ibmca_rand_bytes(unsigned char *buf, int num);
|
|
static int ibmca_rand_status(void);
|
|
|
|
/* WJH - check for more commands, like in nuron */
|
|
|
|
/* The definitions for control commands specific to this engine */
|
|
# define IBMCA_CMD_SO_PATH ENGINE_CMD_BASE
|
|
static const ENGINE_CMD_DEFN ibmca_cmd_defns[] = {
|
|
{IBMCA_CMD_SO_PATH,
|
|
"SO_PATH",
|
|
"Specifies the path to the 'atasi' 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 ibmca_rsa = {
|
|
"Ibmca RSA method",
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
ibmca_rsa_mod_exp,
|
|
ibmca_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 ibmca_dsa = {
|
|
"Ibmca DSA method",
|
|
NULL, /* dsa_do_sign */
|
|
NULL, /* dsa_sign_setup */
|
|
NULL, /* dsa_do_verify */
|
|
ibmca_dsa_mod_exp, /* dsa_mod_exp */
|
|
ibmca_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 ibmca_dh = {
|
|
"Ibmca DH method",
|
|
NULL,
|
|
NULL,
|
|
ibmca_mod_exp_dh,
|
|
NULL,
|
|
NULL,
|
|
0,
|
|
NULL
|
|
};
|
|
# endif
|
|
|
|
static RAND_METHOD ibmca_rand = {
|
|
/* "IBMCA RAND method", */
|
|
NULL,
|
|
ibmca_rand_bytes,
|
|
NULL,
|
|
NULL,
|
|
ibmca_rand_bytes,
|
|
ibmca_rand_status,
|
|
};
|
|
|
|
/* Constants used when creating the ENGINE */
|
|
static const char *engine_ibmca_id = "ibmca";
|
|
static const char *engine_ibmca_name = "Ibmca hardware engine support";
|
|
|
|
/*
|
|
* This internal function is used by ENGINE_ibmca() 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_DSA
|
|
const DSA_METHOD *meth2;
|
|
# endif
|
|
# ifndef OPENSSL_NO_DH
|
|
const DH_METHOD *meth3;
|
|
# endif
|
|
if (!ENGINE_set_id(e, engine_ibmca_id) ||
|
|
!ENGINE_set_name(e, engine_ibmca_name) ||
|
|
# ifndef OPENSSL_NO_RSA
|
|
!ENGINE_set_RSA(e, &ibmca_rsa) ||
|
|
# endif
|
|
# ifndef OPENSSL_NO_DSA
|
|
!ENGINE_set_DSA(e, &ibmca_dsa) ||
|
|
# endif
|
|
# ifndef OPENSSL_NO_DH
|
|
!ENGINE_set_DH(e, &ibmca_dh) ||
|
|
# endif
|
|
!ENGINE_set_RAND(e, &ibmca_rand) ||
|
|
!ENGINE_set_destroy_function(e, ibmca_destroy) ||
|
|
!ENGINE_set_init_function(e, ibmca_init) ||
|
|
!ENGINE_set_finish_function(e, ibmca_finish) ||
|
|
!ENGINE_set_ctrl_function(e, ibmca_ctrl) ||
|
|
!ENGINE_set_cmd_defns(e, ibmca_cmd_defns))
|
|
return 0;
|
|
|
|
# ifndef OPENSSL_NO_RSA
|
|
/*
|
|
* We know that the "PKCS1_SSLeay()" functions hook properly to the
|
|
* ibmca-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();
|
|
ibmca_rsa.rsa_pub_enc = meth1->rsa_pub_enc;
|
|
ibmca_rsa.rsa_pub_dec = meth1->rsa_pub_dec;
|
|
ibmca_rsa.rsa_priv_enc = meth1->rsa_priv_enc;
|
|
ibmca_rsa.rsa_priv_dec = meth1->rsa_priv_dec;
|
|
# endif
|
|
|
|
# ifndef OPENSSL_NO_DSA
|
|
/*
|
|
* Use the DSA_OpenSSL() method and just hook the mod_exp-ish bits.
|
|
*/
|
|
meth2 = DSA_OpenSSL();
|
|
ibmca_dsa.dsa_do_sign = meth2->dsa_do_sign;
|
|
ibmca_dsa.dsa_sign_setup = meth2->dsa_sign_setup;
|
|
ibmca_dsa.dsa_do_verify = meth2->dsa_do_verify;
|
|
# endif
|
|
|
|
# ifndef OPENSSL_NO_DH
|
|
/* Much the same for Diffie-Hellman */
|
|
meth3 = DH_OpenSSL();
|
|
ibmca_dh.generate_key = meth3->generate_key;
|
|
ibmca_dh.compute_key = meth3->compute_key;
|
|
# endif
|
|
|
|
/* Ensure the ibmca error handling is set up */
|
|
ERR_load_IBMCA_strings();
|
|
return 1;
|
|
}
|
|
|
|
static ENGINE *engine_ibmca(void)
|
|
{
|
|
ENGINE *ret = ENGINE_new();
|
|
if (!ret)
|
|
return NULL;
|
|
if (!bind_helper(ret)) {
|
|
ENGINE_free(ret);
|
|
return NULL;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
# ifdef ENGINE_DYNAMIC_SUPPORT
|
|
static
|
|
# endif
|
|
void ENGINE_load_ibmca(void)
|
|
{
|
|
/* Copied from eng_[openssl|dyn].c */
|
|
ENGINE *toadd = engine_ibmca();
|
|
if (!toadd)
|
|
return;
|
|
ENGINE_add(toadd);
|
|
ENGINE_free(toadd);
|
|
ERR_clear_error();
|
|
}
|
|
|
|
/* Destructor (complements the "ENGINE_ibmca()" constructor) */
|
|
static int ibmca_destroy(ENGINE *e)
|
|
{
|
|
/*
|
|
* Unload the ibmca error strings so any error state including our functs
|
|
* or reasons won't lead to a segfault (they simply get displayed without
|
|
* corresponding string data because none will be found).
|
|
*/
|
|
ERR_unload_IBMCA_strings();
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* This is a process-global DSO handle used for loading and unloading the
|
|
* Ibmca 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 *ibmca_dso = NULL;
|
|
|
|
/*
|
|
* These are the function pointers that are (un)set when the library has
|
|
* successfully (un)loaded.
|
|
*/
|
|
|
|
static unsigned int (ICA_CALL * p_icaOpenAdapter) ();
|
|
static unsigned int (ICA_CALL * p_icaCloseAdapter) ();
|
|
static unsigned int (ICA_CALL * p_icaRsaModExpo) ();
|
|
static unsigned int (ICA_CALL * p_icaRandomNumberGenerate) ();
|
|
static unsigned int (ICA_CALL * p_icaRsaCrt) ();
|
|
|
|
/* utility function to obtain a context */
|
|
static int get_context(ICA_ADAPTER_HANDLE * p_handle)
|
|
{
|
|
unsigned int status = 0;
|
|
|
|
status = p_icaOpenAdapter(0, p_handle);
|
|
if (status != 0)
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
/* similarly to release one. */
|
|
static void release_context(ICA_ADAPTER_HANDLE handle)
|
|
{
|
|
p_icaCloseAdapter(handle);
|
|
}
|
|
|
|
/* (de)initialisation functions. */
|
|
static int ibmca_init(ENGINE *e)
|
|
{
|
|
|
|
void (*p1) ();
|
|
void (*p2) ();
|
|
void (*p3) ();
|
|
void (*p4) ();
|
|
void (*p5) ();
|
|
|
|
if (ibmca_dso != NULL) {
|
|
IBMCAerr(IBMCA_F_IBMCA_INIT, IBMCA_R_ALREADY_LOADED);
|
|
goto err;
|
|
}
|
|
/*
|
|
* Attempt to load libatasi.so/atasi.dll/whatever. Needs to be changed
|
|
* unfortunately because the Ibmca drivers don't have standard library
|
|
* names that can be platform-translated well.
|
|
*/
|
|
/*
|
|
* TODO: Work out how to actually map to the names the Ibmca drivers
|
|
* really use - for now a symbollic link needs to be created on the host
|
|
* system from libatasi.so to atasi.so on unix variants.
|
|
*/
|
|
|
|
/* WJH XXX check name translation */
|
|
|
|
ibmca_dso = DSO_load(NULL, IBMCA_LIBNAME, NULL,
|
|
/*
|
|
* DSO_FLAG_NAME_TRANSLATION
|
|
*/ 0);
|
|
if (ibmca_dso == NULL) {
|
|
IBMCAerr(IBMCA_F_IBMCA_INIT, IBMCA_R_DSO_FAILURE);
|
|
goto err;
|
|
}
|
|
|
|
if (!(p1 = DSO_bind_func(ibmca_dso, IBMCA_F1)) ||
|
|
!(p2 = DSO_bind_func(ibmca_dso, IBMCA_F2)) ||
|
|
!(p3 = DSO_bind_func(ibmca_dso, IBMCA_F3)) ||
|
|
!(p4 = DSO_bind_func(ibmca_dso, IBMCA_F4)) ||
|
|
!(p5 = DSO_bind_func(ibmca_dso, IBMCA_F5))) {
|
|
IBMCAerr(IBMCA_F_IBMCA_INIT, IBMCA_R_DSO_FAILURE);
|
|
goto err;
|
|
}
|
|
|
|
/* Copy the pointers */
|
|
|
|
p_icaOpenAdapter = (unsigned int (ICA_CALL *) ())p1;
|
|
p_icaCloseAdapter = (unsigned int (ICA_CALL *) ())p2;
|
|
p_icaRsaModExpo = (unsigned int (ICA_CALL *) ())p3;
|
|
p_icaRandomNumberGenerate = (unsigned int (ICA_CALL *) ())p4;
|
|
p_icaRsaCrt = (unsigned int (ICA_CALL *) ())p5;
|
|
|
|
if (!get_context(&handle)) {
|
|
IBMCAerr(IBMCA_F_IBMCA_INIT, IBMCA_R_UNIT_FAILURE);
|
|
goto err;
|
|
}
|
|
|
|
return 1;
|
|
err:
|
|
if (ibmca_dso)
|
|
DSO_free(ibmca_dso);
|
|
|
|
p_icaOpenAdapter = NULL;
|
|
p_icaCloseAdapter = NULL;
|
|
p_icaRsaModExpo = NULL;
|
|
p_icaRandomNumberGenerate = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ibmca_finish(ENGINE *e)
|
|
{
|
|
if (ibmca_dso == NULL) {
|
|
IBMCAerr(IBMCA_F_IBMCA_FINISH, IBMCA_R_NOT_LOADED);
|
|
return 0;
|
|
}
|
|
release_context(handle);
|
|
if (!DSO_free(ibmca_dso)) {
|
|
IBMCAerr(IBMCA_F_IBMCA_FINISH, IBMCA_R_DSO_FAILURE);
|
|
return 0;
|
|
}
|
|
ibmca_dso = NULL;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int ibmca_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f) ())
|
|
{
|
|
int initialised = ((ibmca_dso == NULL) ? 0 : 1);
|
|
switch (cmd) {
|
|
case IBMCA_CMD_SO_PATH:
|
|
if (p == NULL) {
|
|
IBMCAerr(IBMCA_F_IBMCA_CTRL, ERR_R_PASSED_NULL_PARAMETER);
|
|
return 0;
|
|
}
|
|
if (initialised) {
|
|
IBMCAerr(IBMCA_F_IBMCA_CTRL, IBMCA_R_ALREADY_LOADED);
|
|
return 0;
|
|
}
|
|
IBMCA_LIBNAME = (const char *)p;
|
|
return 1;
|
|
default:
|
|
break;
|
|
}
|
|
IBMCAerr(IBMCA_F_IBMCA_CTRL, IBMCA_R_CTRL_COMMAND_NOT_IMPLEMENTED);
|
|
return 0;
|
|
}
|
|
|
|
static int ibmca_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
|
|
const BIGNUM *m, BN_CTX *ctx)
|
|
{
|
|
/*
|
|
* I need somewhere to store temporary serialised values for use with the
|
|
* Ibmca API calls. A neat cheat - I'll use BIGNUMs from the BN_CTX but
|
|
* access their arrays directly as byte arrays <grin>. This way I don't
|
|
* have to clean anything up.
|
|
*/
|
|
|
|
BIGNUM *argument = NULL;
|
|
BIGNUM *result = NULL;
|
|
BIGNUM *key = NULL;
|
|
int to_return;
|
|
int inLen, outLen, tmpLen;
|
|
|
|
ICA_KEY_RSA_MODEXPO *publKey = NULL;
|
|
unsigned int rc;
|
|
|
|
to_return = 0; /* expect failure */
|
|
|
|
if (!ibmca_dso) {
|
|
IBMCAerr(IBMCA_F_IBMCA_MOD_EXP, IBMCA_R_NOT_LOADED);
|
|
goto err;
|
|
}
|
|
/* Prepare the params */
|
|
BN_CTX_start(ctx);
|
|
argument = BN_CTX_get(ctx);
|
|
result = BN_CTX_get(ctx);
|
|
key = BN_CTX_get(ctx);
|
|
|
|
if (!argument || !result || !key) {
|
|
IBMCAerr(IBMCA_F_IBMCA_MOD_EXP, IBMCA_R_BN_CTX_FULL);
|
|
goto err;
|
|
}
|
|
|
|
if (!bn_wexpand(argument, m->top) || !bn_wexpand(result, m->top) ||
|
|
!bn_wexpand(key, sizeof(*publKey) / BN_BYTES)) {
|
|
IBMCAerr(IBMCA_F_IBMCA_MOD_EXP, IBMCA_R_BN_EXPAND_FAIL);
|
|
goto err;
|
|
}
|
|
|
|
publKey = (ICA_KEY_RSA_MODEXPO *)key->d;
|
|
|
|
if (publKey == NULL) {
|
|
goto err;
|
|
}
|
|
memset(publKey, 0, sizeof(ICA_KEY_RSA_MODEXPO));
|
|
|
|
publKey->keyType = CORRECT_ENDIANNESS(ME_KEY_TYPE);
|
|
publKey->keyLength = CORRECT_ENDIANNESS(sizeof(ICA_KEY_RSA_MODEXPO));
|
|
publKey->expOffset = (char *)publKey->keyRecord - (char *)publKey;
|
|
|
|
/*
|
|
* A quirk of the card: the exponent length has to be the same as the
|
|
* modulus (key) length
|
|
*/
|
|
|
|
outLen = BN_num_bytes(m);
|
|
|
|
/* check for modulus length SAB*/
|
|
if (outLen > 256) {
|
|
IBMCAerr(IBMCA_F_IBMCA_MOD_EXP, IBMCA_R_MEXP_LENGTH_TO_LARGE);
|
|
goto err;
|
|
}
|
|
/* check for modulus length SAB*/
|
|
|
|
publKey->expLength = publKey->nLength = outLen;
|
|
/*
|
|
* SAB Check for underflow condition the size of the exponent is less
|
|
* than the size of the parameter then we have a big problem and will
|
|
* underflow the keyRecord buffer. Bad stuff could happen then
|
|
*/
|
|
if (outLen < BN_num_bytes(p)) {
|
|
IBMCAerr(IBMCA_F_IBMCA_MOD_EXP, IBMCA_R_UNDERFLOW_KEYRECORD);
|
|
goto err;
|
|
}
|
|
/* SAB End check for underflow */
|
|
|
|
BN_bn2bin(p, &publKey->keyRecord[publKey->expLength - BN_num_bytes(p)]);
|
|
BN_bn2bin(m, &publKey->keyRecord[publKey->expLength]);
|
|
|
|
publKey->modulusBitLength = CORRECT_ENDIANNESS(publKey->nLength * 8);
|
|
publKey->nOffset = CORRECT_ENDIANNESS(publKey->expOffset +
|
|
publKey->expLength);
|
|
|
|
publKey->expOffset = CORRECT_ENDIANNESS((char *)publKey->keyRecord -
|
|
(char *)publKey);
|
|
|
|
tmpLen = outLen;
|
|
publKey->expLength = publKey->nLength = CORRECT_ENDIANNESS(tmpLen);
|
|
|
|
/* Prepare the argument */
|
|
|
|
memset(argument->d, 0, outLen);
|
|
BN_bn2bin(a, (unsigned char *)argument->d + outLen - BN_num_bytes(a));
|
|
|
|
inLen = outLen;
|
|
|
|
/* Perform the operation */
|
|
|
|
if ((rc = p_icaRsaModExpo(handle, inLen, (unsigned char *)argument->d,
|
|
publKey, &outLen, (unsigned char *)result->d))
|
|
!= 0) {
|
|
printf("rc = %d\n", rc);
|
|
IBMCAerr(IBMCA_F_IBMCA_MOD_EXP, IBMCA_R_REQUEST_FAILED);
|
|
goto err;
|
|
}
|
|
|
|
/* Convert the response */
|
|
BN_bin2bn((unsigned char *)result->d, outLen, r);
|
|
to_return = 1;
|
|
err:
|
|
BN_CTX_end(ctx);
|
|
return to_return;
|
|
}
|
|
|
|
# ifndef OPENSSL_NO_RSA
|
|
static int ibmca_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) {
|
|
if (!rsa->d || !rsa->n) {
|
|
IBMCAerr(IBMCA_F_IBMCA_RSA_MOD_EXP,
|
|
IBMCA_R_MISSING_KEY_COMPONENTS);
|
|
goto err;
|
|
}
|
|
to_return = ibmca_mod_exp(r0, I, rsa->d, rsa->n, ctx);
|
|
} else {
|
|
to_return = ibmca_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
|
|
|
|
/* Ein kleines chinesisches "Restessen" */
|
|
static int ibmca_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
|
|
const BIGNUM *q, const BIGNUM *dmp1,
|
|
const BIGNUM *dmq1, const BIGNUM *iqmp,
|
|
BN_CTX *ctx)
|
|
{
|
|
|
|
BIGNUM *argument = NULL;
|
|
BIGNUM *result = NULL;
|
|
BIGNUM *key = NULL;
|
|
|
|
int to_return = 0; /* expect failure */
|
|
|
|
char *pkey = NULL;
|
|
ICA_KEY_RSA_CRT *privKey = NULL;
|
|
int inLen, outLen;
|
|
|
|
int rc;
|
|
unsigned int offset, pSize, qSize;
|
|
/* SAB New variables */
|
|
unsigned int keyRecordSize;
|
|
unsigned int pbytes = BN_num_bytes(p);
|
|
unsigned int qbytes = BN_num_bytes(q);
|
|
unsigned int dmp1bytes = BN_num_bytes(dmp1);
|
|
unsigned int dmq1bytes = BN_num_bytes(dmq1);
|
|
unsigned int iqmpbytes = BN_num_bytes(iqmp);
|
|
|
|
/* Prepare the params */
|
|
|
|
BN_CTX_start(ctx);
|
|
argument = BN_CTX_get(ctx);
|
|
result = BN_CTX_get(ctx);
|
|
key = BN_CTX_get(ctx);
|
|
|
|
if (!argument || !result || !key) {
|
|
IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_BN_CTX_FULL);
|
|
goto err;
|
|
}
|
|
|
|
if (!bn_wexpand(argument, p->top + q->top) ||
|
|
!bn_wexpand(result, p->top + q->top) ||
|
|
!bn_wexpand(key, sizeof(*privKey) / BN_BYTES)) {
|
|
IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_BN_EXPAND_FAIL);
|
|
goto err;
|
|
}
|
|
|
|
privKey = (ICA_KEY_RSA_CRT *)key->d;
|
|
/*
|
|
* SAB Add check for total size in bytes of the parms does not exceed the
|
|
* buffer space we have do this first
|
|
*/
|
|
keyRecordSize = pbytes + qbytes + dmp1bytes + dmq1bytes + iqmpbytes;
|
|
if (keyRecordSize > sizeof(privKey->keyRecord)) {
|
|
IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_OPERANDS_TO_LARGE);
|
|
goto err;
|
|
}
|
|
|
|
if ((qbytes + dmq1bytes) > 256) {
|
|
IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_OPERANDS_TO_LARGE);
|
|
goto err;
|
|
}
|
|
|
|
if (pbytes + dmp1bytes > 256) {
|
|
IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_OPERANDS_TO_LARGE);
|
|
goto err;
|
|
}
|
|
|
|
/* end SAB additions */
|
|
|
|
memset(privKey, 0, sizeof(ICA_KEY_RSA_CRT));
|
|
privKey->keyType = CORRECT_ENDIANNESS(CRT_KEY_TYPE);
|
|
privKey->keyLength = CORRECT_ENDIANNESS(sizeof(ICA_KEY_RSA_CRT));
|
|
privKey->modulusBitLength = CORRECT_ENDIANNESS(BN_num_bytes(q) * 2 * 8);
|
|
|
|
/*
|
|
* p,dp & qInv are 1 QWORD Larger
|
|
*/
|
|
privKey->pLength = CORRECT_ENDIANNESS(BN_num_bytes(p) + 8);
|
|
privKey->qLength = CORRECT_ENDIANNESS(BN_num_bytes(q));
|
|
privKey->dpLength = CORRECT_ENDIANNESS(BN_num_bytes(dmp1) + 8);
|
|
privKey->dqLength = CORRECT_ENDIANNESS(BN_num_bytes(dmq1));
|
|
privKey->qInvLength = CORRECT_ENDIANNESS(BN_num_bytes(iqmp) + 8);
|
|
|
|
offset = (char *)privKey->keyRecord - (char *)privKey;
|
|
|
|
qSize = BN_num_bytes(q);
|
|
pSize = qSize + 8; /* 1 QWORD larger */
|
|
|
|
/*
|
|
* SAB probably aittle redundant, but we'll verify that each of the
|
|
* components which make up a key record sent ot the card does not exceed
|
|
* the space that is allocated for it. this handles the case where even
|
|
* if the total length does not exceed keyrecord zied, if the operands are
|
|
* funny sized they could cause potential side affects on either the card
|
|
* or the result
|
|
*/
|
|
|
|
if ((pbytes > pSize) || (dmp1bytes > pSize) ||
|
|
(iqmpbytes > pSize) || (qbytes > qSize) || (dmq1bytes > qSize)) {
|
|
IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_OPERANDS_TO_LARGE);
|
|
goto err;
|
|
|
|
}
|
|
|
|
privKey->dpOffset = CORRECT_ENDIANNESS(offset);
|
|
|
|
offset += pSize;
|
|
privKey->dqOffset = CORRECT_ENDIANNESS(offset);
|
|
|
|
offset += qSize;
|
|
privKey->pOffset = CORRECT_ENDIANNESS(offset);
|
|
|
|
offset += pSize;
|
|
privKey->qOffset = CORRECT_ENDIANNESS(offset);
|
|
|
|
offset += qSize;
|
|
privKey->qInvOffset = CORRECT_ENDIANNESS(offset);
|
|
|
|
pkey = (char *)privKey->keyRecord;
|
|
|
|
/* SAB first check that we don;t under flow the buffer */
|
|
if (pSize < pbytes) {
|
|
IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_UNDERFLOW_CONDITION);
|
|
goto err;
|
|
}
|
|
|
|
/* pkey += pSize - BN_num_bytes(p); WROING this should be dmp1) */
|
|
pkey += pSize - BN_num_bytes(dmp1);
|
|
BN_bn2bin(dmp1, pkey);
|
|
pkey += BN_num_bytes(dmp1); /* move the pointer */
|
|
|
|
BN_bn2bin(dmq1, pkey); /* Copy over dmq1 */
|
|
|
|
pkey += qSize; /* move pointer */
|
|
/* set up for zero padding of next field */
|
|
pkey += pSize - BN_num_bytes(p);
|
|
|
|
BN_bn2bin(p, pkey);
|
|
/* increment pointer by number of bytes moved */
|
|
pkey += BN_num_bytes(p);
|
|
|
|
BN_bn2bin(q, pkey);
|
|
pkey += qSize; /* move the pointer */
|
|
pkey += pSize - BN_num_bytes(iqmp); /* Adjust for padding */
|
|
BN_bn2bin(iqmp, pkey);
|
|
|
|
/* Prepare the argument and response */
|
|
|
|
/*
|
|
* Correct endianess is used because the fields were converted above
|
|
*/
|
|
outLen = CORRECT_ENDIANNESS(privKey->qLength) * 2;
|
|
|
|
if (outLen > 256) {
|
|
IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_OUTLEN_TO_LARGE);
|
|
goto err;
|
|
}
|
|
|
|
/* SAB check for underflow here on the argeument */
|
|
if (outLen < BN_num_bytes(a)) {
|
|
IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_UNDERFLOW_CONDITION);
|
|
goto err;
|
|
}
|
|
|
|
BN_bn2bin(a, (unsigned char *)argument->d + outLen - BN_num_bytes(a));
|
|
inLen = outLen;
|
|
|
|
memset(result->d, 0, outLen);
|
|
|
|
/* Perform the operation */
|
|
|
|
if ((rc = p_icaRsaCrt(handle, inLen, (unsigned char *)argument->d,
|
|
privKey, &outLen, (unsigned char *)result->d)) != 0)
|
|
{
|
|
printf("rc = %d\n", rc);
|
|
IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_REQUEST_FAILED);
|
|
goto err;
|
|
}
|
|
|
|
/* Convert the response */
|
|
|
|
BN_bin2bn((unsigned char *)result->d, outLen, r);
|
|
to_return = 1;
|
|
|
|
err:
|
|
BN_CTX_end(ctx);
|
|
return to_return;
|
|
|
|
}
|
|
|
|
# ifndef OPENSSL_NO_DSA
|
|
/*
|
|
* This code was liberated and adapted from the commented-out code in
|
|
* dsa_ossl.c. Because of the unoptimised form of the Ibmca acceleration (it
|
|
* doesn't have a CRT form for RSA), this function means that an Ibmca system
|
|
* running with a DSA server certificate can handshake around 5 or 6 times
|
|
* faster/more than an equivalent system running with RSA. Just check out the
|
|
* "signs" statistics from the RSA and DSA parts of "openssl speed -engine
|
|
* ibmca dsa1024 rsa1024".
|
|
*/
|
|
static int ibmca_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 (!ibmca_mod_exp(rr, a1, p1, m, ctx))
|
|
goto end;
|
|
/* let t = a2 ^ p2 mod m */
|
|
if (!ibmca_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 ibmca_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a,
|
|
const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
|
|
BN_MONT_CTX *m_ctx)
|
|
{
|
|
return ibmca_mod_exp(r, a, p, m, ctx);
|
|
}
|
|
# endif
|
|
|
|
/* This function is aliased to mod_exp (with the mont stuff dropped). */
|
|
static int ibmca_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
|
|
const BIGNUM *m, BN_CTX *ctx,
|
|
BN_MONT_CTX *m_ctx)
|
|
{
|
|
return ibmca_mod_exp(r, a, p, m, ctx);
|
|
}
|
|
|
|
# ifndef OPENSSL_NO_DH
|
|
/* This function is aliased to mod_exp (with the dh and mont dropped). */
|
|
static int ibmca_mod_exp_dh(DH const *dh, BIGNUM *r,
|
|
const BIGNUM *a, const BIGNUM *p,
|
|
const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
|
|
{
|
|
return ibmca_mod_exp(r, a, p, m, ctx);
|
|
}
|
|
# endif
|
|
|
|
/* Random bytes are good */
|
|
static int ibmca_rand_bytes(unsigned char *buf, int num)
|
|
{
|
|
int to_return = 0; /* assume failure */
|
|
unsigned int ret;
|
|
|
|
if (handle == 0) {
|
|
IBMCAerr(IBMCA_F_IBMCA_RAND_BYTES, IBMCA_R_NOT_INITIALISED);
|
|
goto err;
|
|
}
|
|
|
|
ret = p_icaRandomNumberGenerate(handle, num, buf);
|
|
if (ret < 0) {
|
|
IBMCAerr(IBMCA_F_IBMCA_RAND_BYTES, IBMCA_R_REQUEST_FAILED);
|
|
goto err;
|
|
}
|
|
to_return = 1;
|
|
err:
|
|
return to_return;
|
|
}
|
|
|
|
static int ibmca_rand_status(void)
|
|
{
|
|
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_ibmca_id) != 0)) /* WJH XXX */
|
|
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_IBMCA */
|
|
#endif /* !OPENSSL_NO_HW */
|