921 lines
28 KiB
C
921 lines
28 KiB
C
/* crypto/engine/hw_ibmca.c */
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/* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
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* project 2000.
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*/
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/* ====================================================================
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* Copyright (c) 1999 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* licensing@OpenSSL.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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/* (C) COPYRIGHT International Business Machines Corp. 2001 */
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#include <stdio.h>
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#include <openssl/crypto.h>
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#include <openssl/dso.h>
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#include <openssl/engine.h>
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#ifndef OPENSSL_NO_HW
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#ifndef OPENSSL_NO_HW_IBMCA
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#ifdef FLAT_INC
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#include "ica_openssl_api.h"
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#else
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#include "vendor_defns/ica_openssl_api.h"
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#endif
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#define IBMCA_LIB_NAME "ibmca engine"
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#include "hw_ibmca_err.c"
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static int ibmca_destroy(ENGINE *e);
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static int ibmca_init(ENGINE *e);
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static int ibmca_finish(ENGINE *e);
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static int ibmca_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)());
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static const char *IBMCA_F1 = "icaOpenAdapter";
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static const char *IBMCA_F2 = "icaCloseAdapter";
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static const char *IBMCA_F3 = "icaRsaModExpo";
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static const char *IBMCA_F4 = "icaRandomNumberGenerate";
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static const char *IBMCA_F5 = "icaRsaCrt";
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ICA_ADAPTER_HANDLE handle=0;
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/* BIGNUM stuff */
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static int ibmca_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
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const BIGNUM *m, BN_CTX *ctx);
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static int ibmca_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
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const BIGNUM *q, const BIGNUM *dmp1, const BIGNUM *dmq1,
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const BIGNUM *iqmp, BN_CTX *ctx);
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#ifndef OPENSSL_NO_RSA
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/* RSA stuff */
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static int ibmca_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa);
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#endif
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/* This function is aliased to mod_exp (with the mont stuff dropped). */
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static int ibmca_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
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const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
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#ifndef OPENSSL_NO_DSA
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/* DSA stuff */
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static int ibmca_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1,
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BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m,
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BN_CTX *ctx, BN_MONT_CTX *in_mont);
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static int ibmca_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a,
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const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
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BN_MONT_CTX *m_ctx);
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#endif
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#ifndef OPENSSL_NO_DH
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/* DH stuff */
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/* This function is alised to mod_exp (with the DH and mont dropped). */
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static int ibmca_mod_exp_dh(const DH *dh, BIGNUM *r,
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const BIGNUM *a, const BIGNUM *p,
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const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
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#endif
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/* RAND stuff */
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static int ibmca_rand_bytes(unsigned char *buf, int num);
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static int ibmca_rand_status(void);
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/* WJH - check for more commands, like in nuron */
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/* The definitions for control commands specific to this engine */
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#define IBMCA_CMD_SO_PATH ENGINE_CMD_BASE
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static const ENGINE_CMD_DEFN ibmca_cmd_defns[] = {
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{IBMCA_CMD_SO_PATH,
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"SO_PATH",
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"Specifies the path to the 'atasi' shared library",
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ENGINE_CMD_FLAG_STRING},
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{0, NULL, NULL, 0}
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};
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#ifndef OPENSSL_NO_RSA
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/* Our internal RSA_METHOD that we provide pointers to */
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static RSA_METHOD ibmca_rsa =
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{
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"Ibmca RSA method",
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NULL,
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NULL,
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NULL,
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NULL,
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ibmca_rsa_mod_exp,
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ibmca_mod_exp_mont,
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NULL,
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NULL,
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0,
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NULL,
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NULL,
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NULL
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};
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#endif
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#ifndef OPENSSL_NO_DSA
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/* Our internal DSA_METHOD that we provide pointers to */
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static DSA_METHOD ibmca_dsa =
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{
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"Ibmca DSA method",
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NULL, /* dsa_do_sign */
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NULL, /* dsa_sign_setup */
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NULL, /* dsa_do_verify */
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ibmca_dsa_mod_exp, /* dsa_mod_exp */
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ibmca_mod_exp_dsa, /* bn_mod_exp */
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NULL, /* init */
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NULL, /* finish */
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0, /* flags */
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NULL /* app_data */
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};
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#endif
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#ifndef OPENSSL_NO_DH
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/* Our internal DH_METHOD that we provide pointers to */
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static DH_METHOD ibmca_dh =
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{
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"Ibmca DH method",
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NULL,
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NULL,
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ibmca_mod_exp_dh,
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NULL,
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NULL,
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0,
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NULL
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};
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#endif
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static RAND_METHOD ibmca_rand =
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{
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/* "IBMCA RAND method", */
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NULL,
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ibmca_rand_bytes,
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NULL,
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NULL,
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ibmca_rand_bytes,
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ibmca_rand_status,
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};
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/* Constants used when creating the ENGINE */
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static const char *engine_ibmca_id = "ibmca";
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static const char *engine_ibmca_name = "Ibmca hardware engine support";
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/* This internal function is used by ENGINE_ibmca() and possibly by the
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* "dynamic" ENGINE support too */
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static int bind_helper(ENGINE *e)
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{
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#ifndef OPENSSL_NO_RSA
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const RSA_METHOD *meth1;
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#endif
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#ifndef OPENSSL_NO_DSA
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const DSA_METHOD *meth2;
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#endif
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#ifndef OPENSSL_NO_DH
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const DH_METHOD *meth3;
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#endif
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if(!ENGINE_set_id(e, engine_ibmca_id) ||
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!ENGINE_set_name(e, engine_ibmca_name) ||
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#ifndef OPENSSL_NO_RSA
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!ENGINE_set_RSA(e, &ibmca_rsa) ||
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#endif
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#ifndef OPENSSL_NO_DSA
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!ENGINE_set_DSA(e, &ibmca_dsa) ||
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#endif
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#ifndef OPENSSL_NO_DH
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!ENGINE_set_DH(e, &ibmca_dh) ||
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#endif
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!ENGINE_set_RAND(e, &ibmca_rand) ||
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!ENGINE_set_destroy_function(e, ibmca_destroy) ||
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!ENGINE_set_init_function(e, ibmca_init) ||
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!ENGINE_set_finish_function(e, ibmca_finish) ||
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!ENGINE_set_ctrl_function(e, ibmca_ctrl) ||
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!ENGINE_set_cmd_defns(e, ibmca_cmd_defns))
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return 0;
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#ifndef OPENSSL_NO_RSA
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/* We know that the "PKCS1_SSLeay()" functions hook properly
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* to the ibmca-specific mod_exp and mod_exp_crt so we use
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* those functions. NB: We don't use ENGINE_openssl() or
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* anything "more generic" because something like the RSAref
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* code may not hook properly, and if you own one of these
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* cards then you have the right to do RSA operations on it
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* anyway! */
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meth1 = RSA_PKCS1_SSLeay();
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ibmca_rsa.rsa_pub_enc = meth1->rsa_pub_enc;
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ibmca_rsa.rsa_pub_dec = meth1->rsa_pub_dec;
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ibmca_rsa.rsa_priv_enc = meth1->rsa_priv_enc;
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ibmca_rsa.rsa_priv_dec = meth1->rsa_priv_dec;
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#endif
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#ifndef OPENSSL_NO_DSA
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/* Use the DSA_OpenSSL() method and just hook the mod_exp-ish
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* bits. */
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meth2 = DSA_OpenSSL();
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ibmca_dsa.dsa_do_sign = meth2->dsa_do_sign;
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ibmca_dsa.dsa_sign_setup = meth2->dsa_sign_setup;
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ibmca_dsa.dsa_do_verify = meth2->dsa_do_verify;
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#endif
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#ifndef OPENSSL_NO_DH
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/* Much the same for Diffie-Hellman */
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meth3 = DH_OpenSSL();
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ibmca_dh.generate_key = meth3->generate_key;
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ibmca_dh.compute_key = meth3->compute_key;
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#endif
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/* Ensure the ibmca error handling is set up */
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ERR_load_IBMCA_strings();
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return 1;
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}
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static ENGINE *engine_ibmca(void)
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{
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ENGINE *ret = ENGINE_new();
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if(!ret)
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return NULL;
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if(!bind_helper(ret))
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{
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ENGINE_free(ret);
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return NULL;
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}
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return ret;
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}
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#ifdef ENGINE_DYNAMIC_SUPPORT
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static
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#endif
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void ENGINE_load_ibmca(void)
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{
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/* Copied from eng_[openssl|dyn].c */
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ENGINE *toadd = engine_ibmca();
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if(!toadd) return;
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ENGINE_add(toadd);
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ENGINE_free(toadd);
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ERR_clear_error();
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}
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/* Destructor (complements the "ENGINE_ibmca()" constructor) */
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static int ibmca_destroy(ENGINE *e)
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{
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/* Unload the ibmca error strings so any error state including our
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* functs or reasons won't lead to a segfault (they simply get displayed
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* without corresponding string data because none will be found). */
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ERR_unload_IBMCA_strings();
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return 1;
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}
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/* This is a process-global DSO handle used for loading and unloading
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* the Ibmca library. NB: This is only set (or unset) during an
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* init() or finish() call (reference counts permitting) and they're
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* operating with global locks, so this should be thread-safe
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* implicitly. */
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static DSO *ibmca_dso = NULL;
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/* These are the function pointers that are (un)set when the library has
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* successfully (un)loaded. */
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static unsigned int (ICA_CALL *p_icaOpenAdapter)();
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static unsigned int (ICA_CALL *p_icaCloseAdapter)();
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static unsigned int (ICA_CALL *p_icaRsaModExpo)();
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static unsigned int (ICA_CALL *p_icaRandomNumberGenerate)();
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static unsigned int (ICA_CALL *p_icaRsaCrt)();
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/* utility function to obtain a context */
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static int get_context(ICA_ADAPTER_HANDLE *p_handle)
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{
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unsigned int status=0;
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status = p_icaOpenAdapter(0, p_handle);
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if(status != 0)
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return 0;
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return 1;
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}
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/* similarly to release one. */
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static void release_context(ICA_ADAPTER_HANDLE handle)
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{
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p_icaCloseAdapter(handle);
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}
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/* (de)initialisation functions. */
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static int ibmca_init(ENGINE *e)
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{
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void (*p1)();
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void (*p2)();
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void (*p3)();
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void (*p4)();
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void (*p5)();
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if(ibmca_dso != NULL)
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{
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IBMCAerr(IBMCA_F_IBMCA_INIT,IBMCA_R_ALREADY_LOADED);
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goto err;
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}
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/* Attempt to load libatasi.so/atasi.dll/whatever. Needs to be
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* changed unfortunately because the Ibmca drivers don't have
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* standard library names that can be platform-translated well. */
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/* TODO: Work out how to actually map to the names the Ibmca
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* drivers really use - for now a symbollic link needs to be
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* created on the host system from libatasi.so to atasi.so on
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* unix variants. */
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/* WJH XXX check name translation */
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ibmca_dso = DSO_load(NULL, IBMCA_LIBNAME, NULL,
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/* DSO_FLAG_NAME_TRANSLATION */ 0);
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if(ibmca_dso == NULL)
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{
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IBMCAerr(IBMCA_F_IBMCA_INIT,IBMCA_R_DSO_FAILURE);
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goto err;
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}
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if(!(p1 = DSO_bind_func(
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ibmca_dso, IBMCA_F1)) ||
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!(p2 = DSO_bind_func(
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ibmca_dso, IBMCA_F2)) ||
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!(p3 = DSO_bind_func(
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ibmca_dso, IBMCA_F3)) ||
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!(p4 = DSO_bind_func(
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ibmca_dso, IBMCA_F4)) ||
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!(p5 = DSO_bind_func(
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ibmca_dso, IBMCA_F5)))
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{
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IBMCAerr(IBMCA_F_IBMCA_INIT,IBMCA_R_DSO_FAILURE);
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goto err;
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}
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|
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/* Copy the pointers */
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p_icaOpenAdapter = (unsigned int (ICA_CALL *)())p1;
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p_icaCloseAdapter = (unsigned int (ICA_CALL *)())p2;
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p_icaRsaModExpo = (unsigned int (ICA_CALL *)())p3;
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p_icaRandomNumberGenerate = (unsigned int (ICA_CALL *)())p4;
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p_icaRsaCrt = (unsigned int (ICA_CALL *)())p5;
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|
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if(!get_context(&handle))
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{
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IBMCAerr(IBMCA_F_IBMCA_INIT,IBMCA_R_UNIT_FAILURE);
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goto err;
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}
|
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return 1;
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err:
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if(ibmca_dso)
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DSO_free(ibmca_dso);
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|
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p_icaOpenAdapter = NULL;
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p_icaCloseAdapter = NULL;
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p_icaRsaModExpo = NULL;
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p_icaRandomNumberGenerate = NULL;
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|
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return 0;
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}
|
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|
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static int ibmca_finish(ENGINE *e)
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{
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if(ibmca_dso == NULL)
|
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{
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IBMCAerr(IBMCA_F_IBMCA_FINISH,IBMCA_R_NOT_LOADED);
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return 0;
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}
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release_context(handle);
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if(!DSO_free(ibmca_dso))
|
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{
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IBMCAerr(IBMCA_F_IBMCA_FINISH,IBMCA_R_DSO_FAILURE);
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return 0;
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}
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ibmca_dso = NULL;
|
|
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return 1;
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}
|
|
|
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static int ibmca_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)())
|
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{
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int initialised = ((ibmca_dso == NULL) ? 0 : 1);
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switch(cmd)
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{
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case IBMCA_CMD_SO_PATH:
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if(p == NULL)
|
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{
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IBMCAerr(IBMCA_F_IBMCA_CTRL,ERR_R_PASSED_NULL_PARAMETER);
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return 0;
|
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}
|
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if(initialised)
|
|
{
|
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IBMCAerr(IBMCA_F_IBMCA_CTRL,IBMCA_R_ALREADY_LOADED);
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return 0;
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}
|
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IBMCA_LIBNAME = (const char *)p;
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return 1;
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default:
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break;
|
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}
|
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IBMCAerr(IBMCA_F_IBMCA_CTRL,IBMCA_R_CTRL_COMMAND_NOT_IMPLEMENTED);
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return 0;
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}
|
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|
|
|
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static int ibmca_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
|
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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;
|
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BIGNUM *result=NULL;
|
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BIGNUM *key=NULL;
|
|
int to_return;
|
|
int inLen, outLen, tmpLen;
|
|
|
|
|
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ICA_KEY_RSA_MODEXPO *publKey=NULL;
|
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unsigned int rc;
|
|
|
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to_return = 0; /* expect failure */
|
|
|
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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 */
|
|
pkey += pSize - BN_num_bytes(p); /* set up for zero padding of next field */
|
|
|
|
BN_bn2bin(p, pkey);
|
|
pkey += BN_num_bytes(p); /* increment pointer by number of bytes moved */
|
|
|
|
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 */
|
|
|
|
outLen = CORRECT_ENDIANNESS(privKey->qLength) * 2; /* Correct endianess is used
|
|
because the fields were converted above */
|
|
|
|
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 */
|