cf1b7d9664
sure they are available in opensslconf.h, by giving them names starting with "OPENSSL_" to avoid conflicts with other packages and by making sure e_os2.h will cover all platform-specific cases together with opensslconf.h. I've checked fairly well that nothing breaks with this (apart from external software that will adapt if they have used something like NO_KRB5), but I can't guarantee it completely, so a review of this change would be a good thing.
808 lines
24 KiB
C
808 lines
24 KiB
C
/* crypto/engine/hw_cswift.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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#include <stdio.h>
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#include <openssl/crypto.h>
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#include "cryptlib.h"
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#include <openssl/dso.h>
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#include "engine_int.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_CSWIFT
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/* Attribution notice: Rainbow have generously allowed me to reproduce
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* the necessary definitions here from their API. This means the support
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* can build independently of whether application builders have the
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* API or hardware. This will allow developers to easily produce software
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* that has latent hardware support for any users that have accelerators
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* installed, without the developers themselves needing anything extra.
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*
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* I have only clipped the parts from the CryptoSwift header files that
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* are (or seem) relevant to the CryptoSwift support code. This is
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* simply to keep the file sizes reasonable.
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* [Geoff]
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*/
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#ifdef FLAT_INC
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#include "cswift.h"
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#else
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#include "vendor_defns/cswift.h"
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#endif
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static int cswift_init(void);
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static int cswift_finish(void);
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/* BIGNUM stuff */
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static int cswift_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 cswift_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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/* RSA stuff */
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static int cswift_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa);
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/* This function is aliased to mod_exp (with the mont stuff dropped). */
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static int cswift_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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/* DSA stuff */
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static DSA_SIG *cswift_dsa_sign(const unsigned char *dgst, int dlen, DSA *dsa);
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static int cswift_dsa_verify(const unsigned char *dgst, int dgst_len,
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DSA_SIG *sig, DSA *dsa);
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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 cswift_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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/* Our internal RSA_METHOD that we provide pointers to */
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static RSA_METHOD cswift_rsa =
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{
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"CryptoSwift 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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cswift_rsa_mod_exp,
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cswift_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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/* Our internal DSA_METHOD that we provide pointers to */
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static DSA_METHOD cswift_dsa =
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{
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"CryptoSwift DSA method",
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cswift_dsa_sign,
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NULL, /* dsa_sign_setup */
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cswift_dsa_verify,
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NULL, /* dsa_mod_exp */
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NULL, /* 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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/* Our internal DH_METHOD that we provide pointers to */
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static DH_METHOD cswift_dh =
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{
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"CryptoSwift DH method",
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NULL,
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NULL,
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cswift_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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/* Our ENGINE structure. */
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static ENGINE engine_cswift =
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{
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"cswift",
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"CryptoSwift hardware engine support",
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&cswift_rsa,
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&cswift_dsa,
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&cswift_dh,
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NULL,
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cswift_mod_exp,
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cswift_mod_exp_crt,
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cswift_init,
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cswift_finish,
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NULL, /* no ctrl() */
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NULL, /* no load_privkey() */
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NULL, /* no load_pubkey() */
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0, /* no flags */
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0, 0, /* no references */
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NULL, NULL /* unlinked */
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};
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/* As this is only ever called once, there's no need for locking
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* (indeed - the lock will already be held by our caller!!!) */
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ENGINE *ENGINE_cswift()
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{
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const RSA_METHOD *meth1;
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const DH_METHOD *meth2;
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/* We know that the "PKCS1_SSLeay()" functions hook properly
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* to the cswift-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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cswift_rsa.rsa_pub_enc = meth1->rsa_pub_enc;
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cswift_rsa.rsa_pub_dec = meth1->rsa_pub_dec;
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cswift_rsa.rsa_priv_enc = meth1->rsa_priv_enc;
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cswift_rsa.rsa_priv_dec = meth1->rsa_priv_dec;
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/* Much the same for Diffie-Hellman */
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meth2 = DH_OpenSSL();
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cswift_dh.generate_key = meth2->generate_key;
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cswift_dh.compute_key = meth2->compute_key;
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return &engine_cswift;
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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 CryptoSwift 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 *cswift_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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t_swAcquireAccContext *p_CSwift_AcquireAccContext = NULL;
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t_swAttachKeyParam *p_CSwift_AttachKeyParam = NULL;
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t_swSimpleRequest *p_CSwift_SimpleRequest = NULL;
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t_swReleaseAccContext *p_CSwift_ReleaseAccContext = NULL;
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/* Used in the DSO operations. */
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static const char *CSWIFT_LIBNAME = "swift";
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static const char *CSWIFT_F1 = "swAcquireAccContext";
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static const char *CSWIFT_F2 = "swAttachKeyParam";
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static const char *CSWIFT_F3 = "swSimpleRequest";
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static const char *CSWIFT_F4 = "swReleaseAccContext";
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/* CryptoSwift library functions and mechanics - these are used by the
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* higher-level functions further down. NB: As and where there's no
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* error checking, take a look lower down where these functions are
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* called, the checking and error handling is probably down there. */
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/* utility function to obtain a context */
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static int get_context(SW_CONTEXT_HANDLE *hac)
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{
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SW_STATUS status;
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status = p_CSwift_AcquireAccContext(hac);
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if(status != SW_OK)
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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(SW_CONTEXT_HANDLE hac)
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{
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p_CSwift_ReleaseAccContext(hac);
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}
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/* (de)initialisation functions. */
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static int cswift_init(void)
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{
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SW_CONTEXT_HANDLE hac;
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t_swAcquireAccContext *p1;
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t_swAttachKeyParam *p2;
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t_swSimpleRequest *p3;
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t_swReleaseAccContext *p4;
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if(cswift_dso != NULL)
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{
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ENGINEerr(ENGINE_F_CSWIFT_INIT,ENGINE_R_ALREADY_LOADED);
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goto err;
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}
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/* Attempt to load libswift.so/swift.dll/whatever. */
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cswift_dso = DSO_load(NULL, CSWIFT_LIBNAME, NULL, 0);
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if(cswift_dso == NULL)
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{
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ENGINEerr(ENGINE_F_CSWIFT_INIT,ENGINE_R_DSO_FAILURE);
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goto err;
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}
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if(!(p1 = (t_swAcquireAccContext *)
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DSO_bind_func(cswift_dso, CSWIFT_F1)) ||
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!(p2 = (t_swAttachKeyParam *)
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DSO_bind_func(cswift_dso, CSWIFT_F2)) ||
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!(p3 = (t_swSimpleRequest *)
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DSO_bind_func(cswift_dso, CSWIFT_F3)) ||
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!(p4 = (t_swReleaseAccContext *)
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DSO_bind_func(cswift_dso, CSWIFT_F4)))
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{
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ENGINEerr(ENGINE_F_CSWIFT_INIT,ENGINE_R_DSO_FAILURE);
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goto err;
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}
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/* Copy the pointers */
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p_CSwift_AcquireAccContext = p1;
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p_CSwift_AttachKeyParam = p2;
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p_CSwift_SimpleRequest = p3;
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p_CSwift_ReleaseAccContext = p4;
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/* Try and get a context - if not, we may have a DSO but no
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* accelerator! */
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if(!get_context(&hac))
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{
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ENGINEerr(ENGINE_F_CSWIFT_INIT,ENGINE_R_UNIT_FAILURE);
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goto err;
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}
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release_context(hac);
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/* Everything's fine. */
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return 1;
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err:
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if(cswift_dso)
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DSO_free(cswift_dso);
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p_CSwift_AcquireAccContext = NULL;
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p_CSwift_AttachKeyParam = NULL;
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p_CSwift_SimpleRequest = NULL;
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p_CSwift_ReleaseAccContext = NULL;
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return 0;
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}
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static int cswift_finish(void)
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{
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if(cswift_dso == NULL)
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{
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ENGINEerr(ENGINE_F_CSWIFT_FINISH,ENGINE_R_NOT_LOADED);
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return 0;
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}
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if(!DSO_free(cswift_dso))
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{
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ENGINEerr(ENGINE_F_CSWIFT_FINISH,ENGINE_R_DSO_FAILURE);
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return 0;
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}
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cswift_dso = NULL;
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p_CSwift_AcquireAccContext = NULL;
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p_CSwift_AttachKeyParam = NULL;
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p_CSwift_SimpleRequest = NULL;
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p_CSwift_ReleaseAccContext = NULL;
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return 1;
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}
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/* Un petit mod_exp */
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static int cswift_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
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const BIGNUM *m, BN_CTX *ctx)
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{
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/* I need somewhere to store temporary serialised values for
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* use with the CryptoSwift API calls. A neat cheat - I'll use
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* BIGNUMs from the BN_CTX but access their arrays directly as
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* byte arrays <grin>. This way I don't have to clean anything
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* up. */
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BIGNUM *modulus;
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BIGNUM *exponent;
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BIGNUM *argument;
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BIGNUM *result;
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SW_STATUS sw_status;
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SW_LARGENUMBER arg, res;
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SW_PARAM sw_param;
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SW_CONTEXT_HANDLE hac;
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int to_return, acquired;
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modulus = exponent = argument = result = NULL;
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to_return = 0; /* expect failure */
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acquired = 0;
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if(!get_context(&hac))
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{
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ENGINEerr(ENGINE_F_CSWIFT_MOD_EXP,ENGINE_R_GET_HANDLE_FAILED);
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goto err;
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}
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acquired = 1;
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/* Prepare the params */
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modulus = BN_CTX_get(ctx);
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exponent = BN_CTX_get(ctx);
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argument = BN_CTX_get(ctx);
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result = BN_CTX_get(ctx);
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if(!modulus || !exponent || !argument || !result)
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{
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ENGINEerr(ENGINE_F_CSWIFT_MOD_EXP,ENGINE_R_BN_CTX_FULL);
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goto err;
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}
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if(!bn_wexpand(modulus, m->top) || !bn_wexpand(exponent, p->top) ||
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!bn_wexpand(argument, a->top) || !bn_wexpand(result, m->top))
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{
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ENGINEerr(ENGINE_F_CSWIFT_MOD_EXP,ENGINE_R_BN_EXPAND_FAIL);
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goto err;
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}
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sw_param.type = SW_ALG_EXP;
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sw_param.up.exp.modulus.nbytes = BN_bn2bin(m,
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(unsigned char *)modulus->d);
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sw_param.up.exp.modulus.value = (unsigned char *)modulus->d;
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sw_param.up.exp.exponent.nbytes = BN_bn2bin(p,
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(unsigned char *)exponent->d);
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sw_param.up.exp.exponent.value = (unsigned char *)exponent->d;
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/* Attach the key params */
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sw_status = p_CSwift_AttachKeyParam(hac, &sw_param);
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switch(sw_status)
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{
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case SW_OK:
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break;
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case SW_ERR_INPUT_SIZE:
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ENGINEerr(ENGINE_F_CSWIFT_MOD_EXP,
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ENGINE_R_SIZE_TOO_LARGE_OR_TOO_SMALL);
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goto err;
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default:
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{
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char tmpbuf[20];
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ENGINEerr(ENGINE_F_CSWIFT_MOD_EXP,ENGINE_R_REQUEST_FAILED);
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sprintf(tmpbuf, "%ld", sw_status);
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ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
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}
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goto err;
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}
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/* Prepare the argument and response */
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arg.nbytes = BN_bn2bin(a, (unsigned char *)argument->d);
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arg.value = (unsigned char *)argument->d;
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res.nbytes = BN_num_bytes(m);
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memset(result->d, 0, res.nbytes);
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res.value = (unsigned char *)result->d;
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/* Perform the operation */
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if((sw_status = p_CSwift_SimpleRequest(hac, SW_CMD_MODEXP, &arg, 1,
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&res, 1)) != SW_OK)
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{
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char tmpbuf[20];
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ENGINEerr(ENGINE_F_CSWIFT_MOD_EXP,ENGINE_R_REQUEST_FAILED);
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sprintf(tmpbuf, "%ld", sw_status);
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ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
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goto err;
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}
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/* Convert the response */
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BN_bin2bn((unsigned char *)result->d, res.nbytes, r);
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to_return = 1;
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err:
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if(acquired)
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release_context(hac);
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if(modulus) ctx->tos--;
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if(exponent) ctx->tos--;
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if(argument) ctx->tos--;
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if(result) ctx->tos--;
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return to_return;
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}
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|
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/* Un petit mod_exp chinois */
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|
static int cswift_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
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const BIGNUM *q, const BIGNUM *dmp1,
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const BIGNUM *dmq1, const BIGNUM *iqmp, BN_CTX *ctx)
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|
{
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SW_STATUS sw_status;
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SW_LARGENUMBER arg, res;
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SW_PARAM sw_param;
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SW_CONTEXT_HANDLE hac;
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BIGNUM *rsa_p = NULL;
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BIGNUM *rsa_q = NULL;
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BIGNUM *rsa_dmp1 = NULL;
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BIGNUM *rsa_dmq1 = NULL;
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BIGNUM *rsa_iqmp = NULL;
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BIGNUM *argument = NULL;
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BIGNUM *result = NULL;
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int to_return = 0; /* expect failure */
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int acquired = 0;
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if(!get_context(&hac))
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{
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ENGINEerr(ENGINE_F_CSWIFT_MOD_EXP_CRT,ENGINE_R_GET_HANDLE_FAILED);
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goto err;
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}
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acquired = 1;
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/* Prepare the params */
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rsa_p = BN_CTX_get(ctx);
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rsa_q = BN_CTX_get(ctx);
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rsa_dmp1 = BN_CTX_get(ctx);
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rsa_dmq1 = BN_CTX_get(ctx);
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rsa_iqmp = BN_CTX_get(ctx);
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argument = BN_CTX_get(ctx);
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result = BN_CTX_get(ctx);
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|
if(!rsa_p || !rsa_q || !rsa_dmp1 || !rsa_dmq1 || !rsa_iqmp ||
|
|
!argument || !result)
|
|
{
|
|
ENGINEerr(ENGINE_F_CSWIFT_MOD_EXP_CRT,ENGINE_R_BN_CTX_FULL);
|
|
goto err;
|
|
}
|
|
if(!bn_wexpand(rsa_p, p->top) || !bn_wexpand(rsa_q, q->top) ||
|
|
!bn_wexpand(rsa_dmp1, dmp1->top) ||
|
|
!bn_wexpand(rsa_dmq1, dmq1->top) ||
|
|
!bn_wexpand(rsa_iqmp, iqmp->top) ||
|
|
!bn_wexpand(argument, a->top) ||
|
|
!bn_wexpand(result, p->top + q->top))
|
|
{
|
|
ENGINEerr(ENGINE_F_CSWIFT_MOD_EXP_CRT,ENGINE_R_BN_EXPAND_FAIL);
|
|
goto err;
|
|
}
|
|
sw_param.type = SW_ALG_CRT;
|
|
sw_param.up.crt.p.nbytes = BN_bn2bin(p, (unsigned char *)rsa_p->d);
|
|
sw_param.up.crt.p.value = (unsigned char *)rsa_p->d;
|
|
sw_param.up.crt.q.nbytes = BN_bn2bin(q, (unsigned char *)rsa_q->d);
|
|
sw_param.up.crt.q.value = (unsigned char *)rsa_q->d;
|
|
sw_param.up.crt.dmp1.nbytes = BN_bn2bin(dmp1,
|
|
(unsigned char *)rsa_dmp1->d);
|
|
sw_param.up.crt.dmp1.value = (unsigned char *)rsa_dmp1->d;
|
|
sw_param.up.crt.dmq1.nbytes = BN_bn2bin(dmq1,
|
|
(unsigned char *)rsa_dmq1->d);
|
|
sw_param.up.crt.dmq1.value = (unsigned char *)rsa_dmq1->d;
|
|
sw_param.up.crt.iqmp.nbytes = BN_bn2bin(iqmp,
|
|
(unsigned char *)rsa_iqmp->d);
|
|
sw_param.up.crt.iqmp.value = (unsigned char *)rsa_iqmp->d;
|
|
/* Attach the key params */
|
|
sw_status = p_CSwift_AttachKeyParam(hac, &sw_param);
|
|
switch(sw_status)
|
|
{
|
|
case SW_OK:
|
|
break;
|
|
case SW_ERR_INPUT_SIZE:
|
|
ENGINEerr(ENGINE_F_CSWIFT_MOD_EXP_CRT,
|
|
ENGINE_R_SIZE_TOO_LARGE_OR_TOO_SMALL);
|
|
goto err;
|
|
default:
|
|
{
|
|
char tmpbuf[20];
|
|
ENGINEerr(ENGINE_F_CSWIFT_MOD_EXP_CRT,ENGINE_R_REQUEST_FAILED);
|
|
sprintf(tmpbuf, "%ld", sw_status);
|
|
ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
|
|
}
|
|
goto err;
|
|
}
|
|
/* Prepare the argument and response */
|
|
arg.nbytes = BN_bn2bin(a, (unsigned char *)argument->d);
|
|
arg.value = (unsigned char *)argument->d;
|
|
res.nbytes = 2 * BN_num_bytes(p);
|
|
memset(result->d, 0, res.nbytes);
|
|
res.value = (unsigned char *)result->d;
|
|
/* Perform the operation */
|
|
if((sw_status = p_CSwift_SimpleRequest(hac, SW_CMD_MODEXP_CRT, &arg, 1,
|
|
&res, 1)) != SW_OK)
|
|
{
|
|
char tmpbuf[20];
|
|
ENGINEerr(ENGINE_F_CSWIFT_MOD_EXP_CRT,ENGINE_R_REQUEST_FAILED);
|
|
sprintf(tmpbuf, "%ld", sw_status);
|
|
ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
|
|
goto err;
|
|
}
|
|
/* Convert the response */
|
|
BN_bin2bn((unsigned char *)result->d, res.nbytes, r);
|
|
to_return = 1;
|
|
err:
|
|
if(acquired)
|
|
release_context(hac);
|
|
if(rsa_p) ctx->tos--;
|
|
if(rsa_q) ctx->tos--;
|
|
if(rsa_dmp1) ctx->tos--;
|
|
if(rsa_dmq1) ctx->tos--;
|
|
if(rsa_iqmp) ctx->tos--;
|
|
if(argument) ctx->tos--;
|
|
if(result) ctx->tos--;
|
|
return to_return;
|
|
}
|
|
|
|
static int cswift_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)
|
|
{
|
|
ENGINEerr(ENGINE_F_CSWIFT_RSA_MOD_EXP,ENGINE_R_MISSING_KEY_COMPONENTS);
|
|
goto err;
|
|
}
|
|
to_return = cswift_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;
|
|
}
|
|
|
|
/* This function is aliased to mod_exp (with the mont stuff dropped). */
|
|
static int cswift_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
|
|
const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
|
|
{
|
|
return cswift_mod_exp(r, a, p, m, ctx);
|
|
}
|
|
|
|
static DSA_SIG *cswift_dsa_sign(const unsigned char *dgst, int dlen, DSA *dsa)
|
|
{
|
|
SW_CONTEXT_HANDLE hac;
|
|
SW_PARAM sw_param;
|
|
SW_STATUS sw_status;
|
|
SW_LARGENUMBER arg, res;
|
|
unsigned char *ptr;
|
|
BN_CTX *ctx;
|
|
BIGNUM *dsa_p = NULL;
|
|
BIGNUM *dsa_q = NULL;
|
|
BIGNUM *dsa_g = NULL;
|
|
BIGNUM *dsa_key = NULL;
|
|
BIGNUM *result = NULL;
|
|
DSA_SIG *to_return = NULL;
|
|
int acquired = 0;
|
|
|
|
if((ctx = BN_CTX_new()) == NULL)
|
|
goto err;
|
|
if(!get_context(&hac))
|
|
{
|
|
ENGINEerr(ENGINE_F_CSWIFT_DSA_SIGN,ENGINE_R_GET_HANDLE_FAILED);
|
|
goto err;
|
|
}
|
|
acquired = 1;
|
|
/* Prepare the params */
|
|
dsa_p = BN_CTX_get(ctx);
|
|
dsa_q = BN_CTX_get(ctx);
|
|
dsa_g = BN_CTX_get(ctx);
|
|
dsa_key = BN_CTX_get(ctx);
|
|
result = BN_CTX_get(ctx);
|
|
if(!dsa_p || !dsa_q || !dsa_g || !dsa_key || !result)
|
|
{
|
|
ENGINEerr(ENGINE_F_CSWIFT_DSA_SIGN,ENGINE_R_BN_CTX_FULL);
|
|
goto err;
|
|
}
|
|
if(!bn_wexpand(dsa_p, dsa->p->top) ||
|
|
!bn_wexpand(dsa_q, dsa->q->top) ||
|
|
!bn_wexpand(dsa_g, dsa->g->top) ||
|
|
!bn_wexpand(dsa_key, dsa->priv_key->top) ||
|
|
!bn_wexpand(result, dsa->p->top))
|
|
{
|
|
ENGINEerr(ENGINE_F_CSWIFT_DSA_SIGN,ENGINE_R_BN_EXPAND_FAIL);
|
|
goto err;
|
|
}
|
|
sw_param.type = SW_ALG_DSA;
|
|
sw_param.up.dsa.p.nbytes = BN_bn2bin(dsa->p,
|
|
(unsigned char *)dsa_p->d);
|
|
sw_param.up.dsa.p.value = (unsigned char *)dsa_p->d;
|
|
sw_param.up.dsa.q.nbytes = BN_bn2bin(dsa->q,
|
|
(unsigned char *)dsa_q->d);
|
|
sw_param.up.dsa.q.value = (unsigned char *)dsa_q->d;
|
|
sw_param.up.dsa.g.nbytes = BN_bn2bin(dsa->g,
|
|
(unsigned char *)dsa_g->d);
|
|
sw_param.up.dsa.g.value = (unsigned char *)dsa_g->d;
|
|
sw_param.up.dsa.key.nbytes = BN_bn2bin(dsa->priv_key,
|
|
(unsigned char *)dsa_key->d);
|
|
sw_param.up.dsa.key.value = (unsigned char *)dsa_key->d;
|
|
/* Attach the key params */
|
|
sw_status = p_CSwift_AttachKeyParam(hac, &sw_param);
|
|
switch(sw_status)
|
|
{
|
|
case SW_OK:
|
|
break;
|
|
case SW_ERR_INPUT_SIZE:
|
|
ENGINEerr(ENGINE_F_CSWIFT_DSA_SIGN,
|
|
ENGINE_R_SIZE_TOO_LARGE_OR_TOO_SMALL);
|
|
goto err;
|
|
default:
|
|
{
|
|
char tmpbuf[20];
|
|
ENGINEerr(ENGINE_F_CSWIFT_DSA_SIGN,ENGINE_R_REQUEST_FAILED);
|
|
sprintf(tmpbuf, "%ld", sw_status);
|
|
ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
|
|
}
|
|
goto err;
|
|
}
|
|
/* Prepare the argument and response */
|
|
arg.nbytes = dlen;
|
|
arg.value = (unsigned char *)dgst;
|
|
res.nbytes = BN_num_bytes(dsa->p);
|
|
memset(result->d, 0, res.nbytes);
|
|
res.value = (unsigned char *)result->d;
|
|
/* Perform the operation */
|
|
sw_status = p_CSwift_SimpleRequest(hac, SW_CMD_DSS_SIGN, &arg, 1,
|
|
&res, 1);
|
|
if(sw_status != SW_OK)
|
|
{
|
|
char tmpbuf[20];
|
|
ENGINEerr(ENGINE_F_CSWIFT_DSA_SIGN,ENGINE_R_REQUEST_FAILED);
|
|
sprintf(tmpbuf, "%ld", sw_status);
|
|
ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
|
|
goto err;
|
|
}
|
|
/* Convert the response */
|
|
ptr = (unsigned char *)result->d;
|
|
if((to_return = DSA_SIG_new()) == NULL)
|
|
goto err;
|
|
to_return->r = BN_bin2bn((unsigned char *)result->d, 20, NULL);
|
|
to_return->s = BN_bin2bn((unsigned char *)result->d + 20, 20, NULL);
|
|
|
|
err:
|
|
if(acquired)
|
|
release_context(hac);
|
|
if(dsa_p) ctx->tos--;
|
|
if(dsa_q) ctx->tos--;
|
|
if(dsa_g) ctx->tos--;
|
|
if(dsa_key) ctx->tos--;
|
|
if(result) ctx->tos--;
|
|
if(ctx)
|
|
BN_CTX_free(ctx);
|
|
return to_return;
|
|
}
|
|
|
|
static int cswift_dsa_verify(const unsigned char *dgst, int dgst_len,
|
|
DSA_SIG *sig, DSA *dsa)
|
|
{
|
|
SW_CONTEXT_HANDLE hac;
|
|
SW_PARAM sw_param;
|
|
SW_STATUS sw_status;
|
|
SW_LARGENUMBER arg[2], res;
|
|
unsigned long sig_result;
|
|
BN_CTX *ctx;
|
|
BIGNUM *dsa_p = NULL;
|
|
BIGNUM *dsa_q = NULL;
|
|
BIGNUM *dsa_g = NULL;
|
|
BIGNUM *dsa_key = NULL;
|
|
BIGNUM *argument = NULL;
|
|
int to_return = -1;
|
|
int acquired = 0;
|
|
|
|
if((ctx = BN_CTX_new()) == NULL)
|
|
goto err;
|
|
if(!get_context(&hac))
|
|
{
|
|
ENGINEerr(ENGINE_F_CSWIFT_DSA_VERIFY,ENGINE_R_GET_HANDLE_FAILED);
|
|
goto err;
|
|
}
|
|
acquired = 1;
|
|
/* Prepare the params */
|
|
dsa_p = BN_CTX_get(ctx);
|
|
dsa_q = BN_CTX_get(ctx);
|
|
dsa_g = BN_CTX_get(ctx);
|
|
dsa_key = BN_CTX_get(ctx);
|
|
argument = BN_CTX_get(ctx);
|
|
if(!dsa_p || !dsa_q || !dsa_g || !dsa_key || !argument)
|
|
{
|
|
ENGINEerr(ENGINE_F_CSWIFT_DSA_VERIFY,ENGINE_R_BN_CTX_FULL);
|
|
goto err;
|
|
}
|
|
if(!bn_wexpand(dsa_p, dsa->p->top) ||
|
|
!bn_wexpand(dsa_q, dsa->q->top) ||
|
|
!bn_wexpand(dsa_g, dsa->g->top) ||
|
|
!bn_wexpand(dsa_key, dsa->pub_key->top) ||
|
|
!bn_wexpand(argument, 40))
|
|
{
|
|
ENGINEerr(ENGINE_F_CSWIFT_DSA_VERIFY,ENGINE_R_BN_EXPAND_FAIL);
|
|
goto err;
|
|
}
|
|
sw_param.type = SW_ALG_DSA;
|
|
sw_param.up.dsa.p.nbytes = BN_bn2bin(dsa->p,
|
|
(unsigned char *)dsa_p->d);
|
|
sw_param.up.dsa.p.value = (unsigned char *)dsa_p->d;
|
|
sw_param.up.dsa.q.nbytes = BN_bn2bin(dsa->q,
|
|
(unsigned char *)dsa_q->d);
|
|
sw_param.up.dsa.q.value = (unsigned char *)dsa_q->d;
|
|
sw_param.up.dsa.g.nbytes = BN_bn2bin(dsa->g,
|
|
(unsigned char *)dsa_g->d);
|
|
sw_param.up.dsa.g.value = (unsigned char *)dsa_g->d;
|
|
sw_param.up.dsa.key.nbytes = BN_bn2bin(dsa->pub_key,
|
|
(unsigned char *)dsa_key->d);
|
|
sw_param.up.dsa.key.value = (unsigned char *)dsa_key->d;
|
|
/* Attach the key params */
|
|
sw_status = p_CSwift_AttachKeyParam(hac, &sw_param);
|
|
switch(sw_status)
|
|
{
|
|
case SW_OK:
|
|
break;
|
|
case SW_ERR_INPUT_SIZE:
|
|
ENGINEerr(ENGINE_F_CSWIFT_DSA_VERIFY,
|
|
ENGINE_R_SIZE_TOO_LARGE_OR_TOO_SMALL);
|
|
goto err;
|
|
default:
|
|
{
|
|
char tmpbuf[20];
|
|
ENGINEerr(ENGINE_F_CSWIFT_DSA_VERIFY,ENGINE_R_REQUEST_FAILED);
|
|
sprintf(tmpbuf, "%ld", sw_status);
|
|
ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
|
|
}
|
|
goto err;
|
|
}
|
|
/* Prepare the argument and response */
|
|
arg[0].nbytes = dgst_len;
|
|
arg[0].value = (unsigned char *)dgst;
|
|
arg[1].nbytes = 40;
|
|
arg[1].value = (unsigned char *)argument->d;
|
|
memset(arg[1].value, 0, 40);
|
|
BN_bn2bin(sig->r, arg[1].value + 20 - BN_num_bytes(sig->r));
|
|
BN_bn2bin(sig->s, arg[1].value + 40 - BN_num_bytes(sig->s));
|
|
res.nbytes = 4; /* unsigned long */
|
|
res.value = (unsigned char *)(&sig_result);
|
|
/* Perform the operation */
|
|
sw_status = p_CSwift_SimpleRequest(hac, SW_CMD_DSS_VERIFY, arg, 2,
|
|
&res, 1);
|
|
if(sw_status != SW_OK)
|
|
{
|
|
char tmpbuf[20];
|
|
ENGINEerr(ENGINE_F_CSWIFT_DSA_VERIFY,ENGINE_R_REQUEST_FAILED);
|
|
sprintf(tmpbuf, "%ld", sw_status);
|
|
ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
|
|
goto err;
|
|
}
|
|
/* Convert the response */
|
|
to_return = ((sig_result == 0) ? 0 : 1);
|
|
|
|
err:
|
|
if(acquired)
|
|
release_context(hac);
|
|
if(dsa_p) ctx->tos--;
|
|
if(dsa_q) ctx->tos--;
|
|
if(dsa_g) ctx->tos--;
|
|
if(dsa_key) ctx->tos--;
|
|
if(argument) ctx->tos--;
|
|
if(ctx)
|
|
BN_CTX_free(ctx);
|
|
return to_return;
|
|
}
|
|
|
|
/* This function is aliased to mod_exp (with the dh and mont dropped). */
|
|
static int cswift_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 cswift_mod_exp(r, a, p, m, ctx);
|
|
}
|
|
|
|
#endif /* !OPENSSL_NO_HW_CSWIFT */
|
|
#endif /* !OPENSSL_NO_HW */
|