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900 lines
27 KiB
900 lines
27 KiB
/* crypto/engine/hw_ibmca.c */ |
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/* |
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* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL project |
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* 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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|
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/* (C) COPYRIGHT International Business Machines Corp. 2001 */ |
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|
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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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|
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#ifndef OPENSSL_NO_HW |
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# ifndef OPENSSL_NO_HW_IBMCA |
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|
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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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|
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# define IBMCA_LIB_NAME "ibmca engine" |
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# include "hw_ibmca_err.c" |
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|
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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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|
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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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|
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ICA_ADAPTER_HANDLE handle = 0; |
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|
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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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|
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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, |
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const BIGNUM *dmq1, const BIGNUM *iqmp, |
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BN_CTX *ctx); |
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|
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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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|
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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, |
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BN_MONT_CTX *m_ctx); |
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|
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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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|
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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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|
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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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|
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/* WJH - check for more commands, like in nuron */ |
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|
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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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"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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"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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"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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/* "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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|
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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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|
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/* |
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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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*/ |
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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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/* |
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* We know that the "PKCS1_SSLeay()" functions hook properly to the |
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* ibmca-specific mod_exp and mod_exp_crt so we use those functions. NB: |
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* We don't use ENGINE_openssl() or anything "more generic" because |
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* something like the RSAref code may not hook properly, and if you own |
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* one of these cards then you have the right to do RSA operations on it |
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* anyway! |
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*/ |
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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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/* |
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* Use the DSA_OpenSSL() method and just hook the mod_exp-ish bits. |
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*/ |
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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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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) |
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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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/* |
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* Unload the ibmca error strings so any error state including our functs |
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* or reasons won't lead to a segfault (they simply get displayed without |
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* corresponding string data because none will be found). |
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*/ |
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ERR_unload_IBMCA_strings(); |
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return 1; |
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} |
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/* |
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* This is a process-global DSO handle used for loading and unloading the |
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* Ibmca library. NB: This is only set (or unset) during an init() or |
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* finish() call (reference counts permitting) and they're operating with |
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* global locks, so this should be thread-safe implicitly. |
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*/ |
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static DSO *ibmca_dso = NULL; |
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/* |
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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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*/ |
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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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|
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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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IBMCAerr(IBMCA_F_IBMCA_INIT, IBMCA_R_ALREADY_LOADED); |
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goto err; |
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} |
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/* |
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* Attempt to load libatasi.so/atasi.dll/whatever. Needs to be changed |
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* unfortunately because the Ibmca drivers don't have standard library |
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* names that can be platform-translated well. |
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*/ |
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/* |
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* TODO: Work out how to actually map to the names the Ibmca drivers |
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* really use - for now a symbollic link needs to be created on the host |
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* system from libatasi.so to atasi.so on unix variants. |
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*/ |
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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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/* |
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* DSO_FLAG_NAME_TRANSLATION |
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*/ 0); |
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if (ibmca_dso == NULL) { |
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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(ibmca_dso, IBMCA_F1)) || |
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!(p2 = DSO_bind_func(ibmca_dso, IBMCA_F2)) || |
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!(p3 = DSO_bind_func(ibmca_dso, IBMCA_F3)) || |
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!(p4 = DSO_bind_func(ibmca_dso, IBMCA_F4)) || |
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!(p5 = DSO_bind_func(ibmca_dso, IBMCA_F5))) { |
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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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/* 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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if (!get_context(&handle)) { |
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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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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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return 0; |
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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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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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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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|
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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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case IBMCA_CMD_SO_PATH: |
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if (p == NULL) { |
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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) |
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{ |
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/* |
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* I need somewhere to store temporary serialised values for use with the |
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* Ibmca API calls. A neat cheat - I'll use BIGNUMs from the BN_CTX but |
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* access their arrays directly as byte arrays <grin>. This way I don't |
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* have to clean anything up. |
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*/ |
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|
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BIGNUM *argument = NULL; |
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BIGNUM *result = NULL; |
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BIGNUM *key = NULL; |
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int to_return; |
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int inLen, outLen, tmpLen; |
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|
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ICA_KEY_RSA_MODEXPO *publKey = NULL; |
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unsigned int rc; |
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|
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to_return = 0; /* expect failure */ |
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|
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if (!ibmca_dso) { |
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IBMCAerr(IBMCA_F_IBMCA_MOD_EXP, IBMCA_R_NOT_LOADED); |
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goto err; |
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} |
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/* Prepare the params */ |
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BN_CTX_start(ctx); |
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argument = BN_CTX_get(ctx); |
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result = BN_CTX_get(ctx); |
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key = BN_CTX_get(ctx); |
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|
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if (!argument || !result || !key) { |
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IBMCAerr(IBMCA_F_IBMCA_MOD_EXP, IBMCA_R_BN_CTX_FULL); |
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goto err; |
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} |
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|
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if (!bn_wexpand(argument, m->top) || !bn_wexpand(result, m->top) || |
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!bn_wexpand(key, sizeof(*publKey) / BN_BYTES)) { |
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IBMCAerr(IBMCA_F_IBMCA_MOD_EXP, IBMCA_R_BN_EXPAND_FAIL); |
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goto err; |
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} |
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|
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publKey = (ICA_KEY_RSA_MODEXPO *)key->d; |
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|
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if (publKey == NULL) { |
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goto err; |
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} |
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memset(publKey, 0, sizeof(ICA_KEY_RSA_MODEXPO)); |
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|
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publKey->keyType = CORRECT_ENDIANNESS(ME_KEY_TYPE); |
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publKey->keyLength = CORRECT_ENDIANNESS(sizeof(ICA_KEY_RSA_MODEXPO)); |
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publKey->expOffset = (char *)publKey->keyRecord - (char *)publKey; |
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|
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/* |
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* A quirk of the card: the exponent length has to be the same as the |
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* modulus (key) length |
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*/ |
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|
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outLen = BN_num_bytes(m); |
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|
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/* check for modulus length SAB*/ |
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if (outLen > 256) { |
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IBMCAerr(IBMCA_F_IBMCA_MOD_EXP, IBMCA_R_MEXP_LENGTH_TO_LARGE); |
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goto err; |
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} |
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/* check for modulus length SAB*/ |
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|
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publKey->expLength = publKey->nLength = outLen; |
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/* |
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* SAB Check for underflow condition the size of the exponent is less |
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* than the size of the parameter then we have a big problem and will |
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* underflow the keyRecord buffer. Bad stuff could happen then |
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*/ |
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if (outLen < BN_num_bytes(p)) { |
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IBMCAerr(IBMCA_F_IBMCA_MOD_EXP, IBMCA_R_UNDERFLOW_KEYRECORD); |
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goto err; |
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} |
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/* SAB End check for underflow */ |
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|
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BN_bn2bin(p, &publKey->keyRecord[publKey->expLength - BN_num_bytes(p)]); |
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BN_bn2bin(m, &publKey->keyRecord[publKey->expLength]); |
|
|
|
publKey->modulusBitLength = CORRECT_ENDIANNESS(publKey->nLength * 8); |
|
publKey->nOffset = CORRECT_ENDIANNESS(publKey->expOffset + |
|
publKey->expLength); |
|
|
|
publKey->expOffset = CORRECT_ENDIANNESS((char *)publKey->keyRecord - |
|
(char *)publKey); |
|
|
|
tmpLen = outLen; |
|
publKey->expLength = publKey->nLength = CORRECT_ENDIANNESS(tmpLen); |
|
|
|
/* Prepare the argument */ |
|
|
|
memset(argument->d, 0, outLen); |
|
BN_bn2bin(a, (unsigned char *)argument->d + outLen - BN_num_bytes(a)); |
|
|
|
inLen = outLen; |
|
|
|
/* Perform the operation */ |
|
|
|
if ((rc = p_icaRsaModExpo(handle, inLen, (unsigned char *)argument->d, |
|
publKey, &outLen, (unsigned char *)result->d)) |
|
!= 0) { |
|
printf("rc = %d\n", rc); |
|
IBMCAerr(IBMCA_F_IBMCA_MOD_EXP, IBMCA_R_REQUEST_FAILED); |
|
goto err; |
|
} |
|
|
|
/* Convert the response */ |
|
BN_bin2bn((unsigned char *)result->d, outLen, r); |
|
to_return = 1; |
|
err: |
|
BN_CTX_end(ctx); |
|
return to_return; |
|
} |
|
|
|
# ifndef OPENSSL_NO_RSA |
|
static int ibmca_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa) |
|
{ |
|
BN_CTX *ctx; |
|
int to_return = 0; |
|
|
|
if ((ctx = BN_CTX_new()) == NULL) |
|
goto err; |
|
if (!rsa->p || !rsa->q || !rsa->dmp1 || !rsa->dmq1 || !rsa->iqmp) { |
|
if (!rsa->d || !rsa->n) { |
|
IBMCAerr(IBMCA_F_IBMCA_RSA_MOD_EXP, |
|
IBMCA_R_MISSING_KEY_COMPONENTS); |
|
goto err; |
|
} |
|
to_return = ibmca_mod_exp(r0, I, rsa->d, rsa->n, ctx); |
|
} else { |
|
to_return = ibmca_mod_exp_crt(r0, I, rsa->p, rsa->q, rsa->dmp1, |
|
rsa->dmq1, rsa->iqmp, ctx); |
|
} |
|
err: |
|
if (ctx) |
|
BN_CTX_free(ctx); |
|
return to_return; |
|
} |
|
# endif |
|
|
|
/* Ein kleines chinesisches "Restessen" */ |
|
static int ibmca_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, |
|
const BIGNUM *q, const BIGNUM *dmp1, |
|
const BIGNUM *dmq1, const BIGNUM *iqmp, |
|
BN_CTX *ctx) |
|
{ |
|
|
|
BIGNUM *argument = NULL; |
|
BIGNUM *result = NULL; |
|
BIGNUM *key = NULL; |
|
|
|
int to_return = 0; /* expect failure */ |
|
|
|
char *pkey = NULL; |
|
ICA_KEY_RSA_CRT *privKey = NULL; |
|
int inLen, outLen; |
|
|
|
int rc; |
|
unsigned int offset, pSize, qSize; |
|
/* SAB New variables */ |
|
unsigned int keyRecordSize; |
|
unsigned int pbytes = BN_num_bytes(p); |
|
unsigned int qbytes = BN_num_bytes(q); |
|
unsigned int dmp1bytes = BN_num_bytes(dmp1); |
|
unsigned int dmq1bytes = BN_num_bytes(dmq1); |
|
unsigned int iqmpbytes = BN_num_bytes(iqmp); |
|
|
|
/* Prepare the params */ |
|
|
|
BN_CTX_start(ctx); |
|
argument = BN_CTX_get(ctx); |
|
result = BN_CTX_get(ctx); |
|
key = BN_CTX_get(ctx); |
|
|
|
if (!argument || !result || !key) { |
|
IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_BN_CTX_FULL); |
|
goto err; |
|
} |
|
|
|
if (!bn_wexpand(argument, p->top + q->top) || |
|
!bn_wexpand(result, p->top + q->top) || |
|
!bn_wexpand(key, sizeof(*privKey) / BN_BYTES)) { |
|
IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_BN_EXPAND_FAIL); |
|
goto err; |
|
} |
|
|
|
privKey = (ICA_KEY_RSA_CRT *)key->d; |
|
/* |
|
* SAB Add check for total size in bytes of the parms does not exceed the |
|
* buffer space we have do this first |
|
*/ |
|
keyRecordSize = pbytes + qbytes + dmp1bytes + dmq1bytes + iqmpbytes; |
|
if (keyRecordSize > sizeof(privKey->keyRecord)) { |
|
IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_OPERANDS_TO_LARGE); |
|
goto err; |
|
} |
|
|
|
if ((qbytes + dmq1bytes) > 256) { |
|
IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_OPERANDS_TO_LARGE); |
|
goto err; |
|
} |
|
|
|
if (pbytes + dmp1bytes > 256) { |
|
IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_OPERANDS_TO_LARGE); |
|
goto err; |
|
} |
|
|
|
/* end SAB additions */ |
|
|
|
memset(privKey, 0, sizeof(ICA_KEY_RSA_CRT)); |
|
privKey->keyType = CORRECT_ENDIANNESS(CRT_KEY_TYPE); |
|
privKey->keyLength = CORRECT_ENDIANNESS(sizeof(ICA_KEY_RSA_CRT)); |
|
privKey->modulusBitLength = CORRECT_ENDIANNESS(BN_num_bytes(q) * 2 * 8); |
|
|
|
/* |
|
* p,dp & qInv are 1 QWORD Larger |
|
*/ |
|
privKey->pLength = CORRECT_ENDIANNESS(BN_num_bytes(p) + 8); |
|
privKey->qLength = CORRECT_ENDIANNESS(BN_num_bytes(q)); |
|
privKey->dpLength = CORRECT_ENDIANNESS(BN_num_bytes(dmp1) + 8); |
|
privKey->dqLength = CORRECT_ENDIANNESS(BN_num_bytes(dmq1)); |
|
privKey->qInvLength = CORRECT_ENDIANNESS(BN_num_bytes(iqmp) + 8); |
|
|
|
offset = (char *)privKey->keyRecord - (char *)privKey; |
|
|
|
qSize = BN_num_bytes(q); |
|
pSize = qSize + 8; /* 1 QWORD larger */ |
|
|
|
/* |
|
* SAB probably aittle redundant, but we'll verify that each of the |
|
* components which make up a key record sent ot the card does not exceed |
|
* the space that is allocated for it. this handles the case where even |
|
* if the total length does not exceed keyrecord zied, if the operands are |
|
* funny sized they could cause potential side affects on either the card |
|
* or the result |
|
*/ |
|
|
|
if ((pbytes > pSize) || (dmp1bytes > pSize) || |
|
(iqmpbytes > pSize) || (qbytes > qSize) || (dmq1bytes > qSize)) { |
|
IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_OPERANDS_TO_LARGE); |
|
goto err; |
|
|
|
} |
|
|
|
privKey->dpOffset = CORRECT_ENDIANNESS(offset); |
|
|
|
offset += pSize; |
|
privKey->dqOffset = CORRECT_ENDIANNESS(offset); |
|
|
|
offset += qSize; |
|
privKey->pOffset = CORRECT_ENDIANNESS(offset); |
|
|
|
offset += pSize; |
|
privKey->qOffset = CORRECT_ENDIANNESS(offset); |
|
|
|
offset += qSize; |
|
privKey->qInvOffset = CORRECT_ENDIANNESS(offset); |
|
|
|
pkey = (char *)privKey->keyRecord; |
|
|
|
/* SAB first check that we don;t under flow the buffer */ |
|
if (pSize < pbytes) { |
|
IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_UNDERFLOW_CONDITION); |
|
goto err; |
|
} |
|
|
|
/* pkey += pSize - BN_num_bytes(p); WROING this should be dmp1) */ |
|
pkey += pSize - BN_num_bytes(dmp1); |
|
BN_bn2bin(dmp1, pkey); |
|
pkey += BN_num_bytes(dmp1); /* move the pointer */ |
|
|
|
BN_bn2bin(dmq1, pkey); /* Copy over dmq1 */ |
|
|
|
pkey += qSize; /* move pointer */ |
|
/* set up for zero padding of next field */ |
|
pkey += pSize - BN_num_bytes(p); |
|
|
|
BN_bn2bin(p, pkey); |
|
/* increment pointer by number of bytes moved */ |
|
pkey += BN_num_bytes(p); |
|
|
|
BN_bn2bin(q, pkey); |
|
pkey += qSize; /* move the pointer */ |
|
pkey += pSize - BN_num_bytes(iqmp); /* Adjust for padding */ |
|
BN_bn2bin(iqmp, pkey); |
|
|
|
/* Prepare the argument and response */ |
|
|
|
/* |
|
* Correct endianess is used because the fields were converted above |
|
*/ |
|
outLen = CORRECT_ENDIANNESS(privKey->qLength) * 2; |
|
|
|
if (outLen > 256) { |
|
IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_OUTLEN_TO_LARGE); |
|
goto err; |
|
} |
|
|
|
/* SAB check for underflow here on the argeument */ |
|
if (outLen < BN_num_bytes(a)) { |
|
IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_UNDERFLOW_CONDITION); |
|
goto err; |
|
} |
|
|
|
BN_bn2bin(a, (unsigned char *)argument->d + outLen - BN_num_bytes(a)); |
|
inLen = outLen; |
|
|
|
memset(result->d, 0, outLen); |
|
|
|
/* Perform the operation */ |
|
|
|
if ((rc = p_icaRsaCrt(handle, inLen, (unsigned char *)argument->d, |
|
privKey, &outLen, (unsigned char *)result->d)) != 0) |
|
{ |
|
printf("rc = %d\n", rc); |
|
IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_REQUEST_FAILED); |
|
goto err; |
|
} |
|
|
|
/* Convert the response */ |
|
|
|
BN_bin2bn((unsigned char *)result->d, outLen, r); |
|
to_return = 1; |
|
|
|
err: |
|
BN_CTX_end(ctx); |
|
return to_return; |
|
|
|
} |
|
|
|
# ifndef OPENSSL_NO_DSA |
|
/* |
|
* This code was liberated and adapted from the commented-out code in |
|
* dsa_ossl.c. Because of the unoptimised form of the Ibmca acceleration (it |
|
* doesn't have a CRT form for RSA), this function means that an Ibmca system |
|
* running with a DSA server certificate can handshake around 5 or 6 times |
|
* faster/more than an equivalent system running with RSA. Just check out the |
|
* "signs" statistics from the RSA and DSA parts of "openssl speed -engine |
|
* ibmca dsa1024 rsa1024". |
|
*/ |
|
static int ibmca_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1, |
|
BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m, |
|
BN_CTX *ctx, BN_MONT_CTX *in_mont) |
|
{ |
|
BIGNUM t; |
|
int to_return = 0; |
|
|
|
BN_init(&t); |
|
/* let rr = a1 ^ p1 mod m */ |
|
if (!ibmca_mod_exp(rr, a1, p1, m, ctx)) |
|
goto end; |
|
/* let t = a2 ^ p2 mod m */ |
|
if (!ibmca_mod_exp(&t, a2, p2, m, ctx)) |
|
goto end; |
|
/* let rr = rr * t mod m */ |
|
if (!BN_mod_mul(rr, rr, &t, m, ctx)) |
|
goto end; |
|
to_return = 1; |
|
end: |
|
BN_free(&t); |
|
return to_return; |
|
} |
|
|
|
static int ibmca_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a, |
|
const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx, |
|
BN_MONT_CTX *m_ctx) |
|
{ |
|
return ibmca_mod_exp(r, a, p, m, ctx); |
|
} |
|
# endif |
|
|
|
/* This function is aliased to mod_exp (with the mont stuff dropped). */ |
|
static int ibmca_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, |
|
const BIGNUM *m, BN_CTX *ctx, |
|
BN_MONT_CTX *m_ctx) |
|
{ |
|
return ibmca_mod_exp(r, a, p, m, ctx); |
|
} |
|
|
|
# ifndef OPENSSL_NO_DH |
|
/* This function is aliased to mod_exp (with the dh and mont dropped). */ |
|
static int ibmca_mod_exp_dh(DH const *dh, BIGNUM *r, |
|
const BIGNUM *a, const BIGNUM *p, |
|
const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx) |
|
{ |
|
return ibmca_mod_exp(r, a, p, m, ctx); |
|
} |
|
# endif |
|
|
|
/* Random bytes are good */ |
|
static int ibmca_rand_bytes(unsigned char *buf, int num) |
|
{ |
|
int to_return = 0; /* assume failure */ |
|
unsigned int ret; |
|
|
|
if (handle == 0) { |
|
IBMCAerr(IBMCA_F_IBMCA_RAND_BYTES, IBMCA_R_NOT_INITIALISED); |
|
goto err; |
|
} |
|
|
|
ret = p_icaRandomNumberGenerate(handle, num, buf); |
|
if (ret < 0) { |
|
IBMCAerr(IBMCA_F_IBMCA_RAND_BYTES, IBMCA_R_REQUEST_FAILED); |
|
goto err; |
|
} |
|
to_return = 1; |
|
err: |
|
return to_return; |
|
} |
|
|
|
static int ibmca_rand_status(void) |
|
{ |
|
return 1; |
|
} |
|
|
|
/* |
|
* This stuff is needed if this ENGINE is being compiled into a |
|
* self-contained shared-library. |
|
*/ |
|
# ifdef ENGINE_DYNAMIC_SUPPORT |
|
static int bind_fn(ENGINE *e, const char *id) |
|
{ |
|
if (id && (strcmp(id, engine_ibmca_id) != 0)) /* WJH XXX */ |
|
return 0; |
|
if (!bind_helper(e)) |
|
return 0; |
|
return 1; |
|
} |
|
|
|
IMPLEMENT_DYNAMIC_CHECK_FN() |
|
IMPLEMENT_DYNAMIC_BIND_FN(bind_fn) |
|
# endif /* ENGINE_DYNAMIC_SUPPORT */ |
|
# endif /* !OPENSSL_NO_HW_IBMCA */ |
|
#endif /* !OPENSSL_NO_HW */
|
|
|