From: Matt Caswell Date: Wed, 21 Jan 2015 22:03:55 +0000 (+0000) Subject: Backport hw_ibmca.c from master due to failed merge X-Git-Tag: OpenSSL_0_9_8-post-reformat~6 X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=b9006da5d7da1e29dbc9bd5ba36dbafec7a6f041;p=oweals%2Fopenssl.git Backport hw_ibmca.c from master due to failed merge Reviewed-by: Tim Hudson --- diff --git a/demos/engines/ibmca/hw_ibmca.c b/demos/engines/ibmca/hw_ibmca.c index 8838b0015e..4a997c85a9 100644 --- a/demos/engines/ibmca/hw_ibmca.c +++ b/demos/engines/ibmca/hw_ibmca.c @@ -1,920 +1,922 @@ -/* crypto/engine/hw_ibmca.c */ -/* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL - * project 2000. - */ -/* ==================================================================== - * Copyright (c) 1999 The OpenSSL Project. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - * 3. All advertising materials mentioning features or use of this - * software must display the following acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" - * - * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to - * endorse or promote products derived from this software without - * prior written permission. For written permission, please contact - * licensing@OpenSSL.org. - * - * 5. Products derived from this software may not be called "OpenSSL" - * nor may "OpenSSL" appear in their names without prior written - * permission of the OpenSSL Project. - * - * 6. Redistributions of any form whatsoever must retain the following - * acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" - * - * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY - * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR - * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - * ==================================================================== - * - * This product includes cryptographic software written by Eric Young - * (eay@cryptsoft.com). This product includes software written by Tim - * Hudson (tjh@cryptsoft.com). - * - */ - -/* (C) COPYRIGHT International Business Machines Corp. 2001 */ - -#include -#include -#include -#include - -#ifndef OPENSSL_NO_HW -#ifndef OPENSSL_NO_HW_IBMCA - -#ifdef FLAT_INC -#include "ica_openssl_api.h" -#else -#include "vendor_defns/ica_openssl_api.h" -#endif - -#define IBMCA_LIB_NAME "ibmca engine" -#include "hw_ibmca_err.c" - -static int ibmca_destroy(ENGINE *e); -static int ibmca_init(ENGINE *e); -static int ibmca_finish(ENGINE *e); -static int ibmca_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)()); - -static const char *IBMCA_F1 = "icaOpenAdapter"; -static const char *IBMCA_F2 = "icaCloseAdapter"; -static const char *IBMCA_F3 = "icaRsaModExpo"; -static const char *IBMCA_F4 = "icaRandomNumberGenerate"; -static const char *IBMCA_F5 = "icaRsaCrt"; - -ICA_ADAPTER_HANDLE handle=0; - -/* BIGNUM stuff */ -static int ibmca_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, - const BIGNUM *m, BN_CTX *ctx); - -static int ibmca_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, - const BIGNUM *q, const BIGNUM *dmp1, const BIGNUM *dmq1, - const BIGNUM *iqmp, BN_CTX *ctx); - -#ifndef OPENSSL_NO_RSA -/* RSA stuff */ -static int ibmca_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa); -#endif - -/* This function is aliased to mod_exp (with the mont stuff dropped). */ -static int ibmca_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, - const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx); - -#ifndef OPENSSL_NO_DSA -/* DSA stuff */ -static int ibmca_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1, - BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m, - BN_CTX *ctx, BN_MONT_CTX *in_mont); -static int ibmca_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a, - const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx, - BN_MONT_CTX *m_ctx); -#endif - -#ifndef OPENSSL_NO_DH -/* DH stuff */ -/* This function is alised to mod_exp (with the DH and mont dropped). */ -static int ibmca_mod_exp_dh(const DH *dh, BIGNUM *r, - const BIGNUM *a, const BIGNUM *p, - const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx); -#endif - -/* RAND stuff */ -static int ibmca_rand_bytes(unsigned char *buf, int num); -static int ibmca_rand_status(void); - - -/* WJH - check for more commands, like in nuron */ - -/* The definitions for control commands specific to this engine */ -#define IBMCA_CMD_SO_PATH ENGINE_CMD_BASE -static const ENGINE_CMD_DEFN ibmca_cmd_defns[] = { - {IBMCA_CMD_SO_PATH, - "SO_PATH", - "Specifies the path to the 'atasi' shared library", - ENGINE_CMD_FLAG_STRING}, - {0, NULL, NULL, 0} - }; - -#ifndef OPENSSL_NO_RSA -/* Our internal RSA_METHOD that we provide pointers to */ -static RSA_METHOD ibmca_rsa = - { - "Ibmca RSA method", - NULL, - NULL, - NULL, - NULL, - ibmca_rsa_mod_exp, - ibmca_mod_exp_mont, - NULL, - NULL, - 0, - NULL, - NULL, - NULL - }; -#endif - -#ifndef OPENSSL_NO_DSA -/* Our internal DSA_METHOD that we provide pointers to */ -static DSA_METHOD ibmca_dsa = - { - "Ibmca DSA method", - NULL, /* dsa_do_sign */ - NULL, /* dsa_sign_setup */ - NULL, /* dsa_do_verify */ - ibmca_dsa_mod_exp, /* dsa_mod_exp */ - ibmca_mod_exp_dsa, /* bn_mod_exp */ - NULL, /* init */ - NULL, /* finish */ - 0, /* flags */ - NULL /* app_data */ - }; -#endif - -#ifndef OPENSSL_NO_DH -/* Our internal DH_METHOD that we provide pointers to */ -static DH_METHOD ibmca_dh = - { - "Ibmca DH method", - NULL, - NULL, - ibmca_mod_exp_dh, - NULL, - NULL, - 0, - NULL - }; -#endif - -static RAND_METHOD ibmca_rand = - { - /* "IBMCA RAND method", */ - NULL, - ibmca_rand_bytes, - NULL, - NULL, - ibmca_rand_bytes, - ibmca_rand_status, - }; - -/* Constants used when creating the ENGINE */ -static const char *engine_ibmca_id = "ibmca"; -static const char *engine_ibmca_name = "Ibmca hardware engine support"; - -/* This internal function is used by ENGINE_ibmca() and possibly by the - * "dynamic" ENGINE support too */ -static int bind_helper(ENGINE *e) - { -#ifndef OPENSSL_NO_RSA - const RSA_METHOD *meth1; -#endif -#ifndef OPENSSL_NO_DSA - const DSA_METHOD *meth2; -#endif -#ifndef OPENSSL_NO_DH - const DH_METHOD *meth3; -#endif - if(!ENGINE_set_id(e, engine_ibmca_id) || - !ENGINE_set_name(e, engine_ibmca_name) || -#ifndef OPENSSL_NO_RSA - !ENGINE_set_RSA(e, &ibmca_rsa) || -#endif -#ifndef OPENSSL_NO_DSA - !ENGINE_set_DSA(e, &ibmca_dsa) || -#endif -#ifndef OPENSSL_NO_DH - !ENGINE_set_DH(e, &ibmca_dh) || -#endif - !ENGINE_set_RAND(e, &ibmca_rand) || - !ENGINE_set_destroy_function(e, ibmca_destroy) || - !ENGINE_set_init_function(e, ibmca_init) || - !ENGINE_set_finish_function(e, ibmca_finish) || - !ENGINE_set_ctrl_function(e, ibmca_ctrl) || - !ENGINE_set_cmd_defns(e, ibmca_cmd_defns)) - return 0; - -#ifndef OPENSSL_NO_RSA - /* We know that the "PKCS1_SSLeay()" functions hook properly - * to the ibmca-specific mod_exp and mod_exp_crt so we use - * those functions. NB: We don't use ENGINE_openssl() or - * anything "more generic" because something like the RSAref - * code may not hook properly, and if you own one of these - * cards then you have the right to do RSA operations on it - * anyway! */ - meth1 = RSA_PKCS1_SSLeay(); - ibmca_rsa.rsa_pub_enc = meth1->rsa_pub_enc; - ibmca_rsa.rsa_pub_dec = meth1->rsa_pub_dec; - ibmca_rsa.rsa_priv_enc = meth1->rsa_priv_enc; - ibmca_rsa.rsa_priv_dec = meth1->rsa_priv_dec; -#endif - -#ifndef OPENSSL_NO_DSA - /* Use the DSA_OpenSSL() method and just hook the mod_exp-ish - * bits. */ - meth2 = DSA_OpenSSL(); - ibmca_dsa.dsa_do_sign = meth2->dsa_do_sign; - ibmca_dsa.dsa_sign_setup = meth2->dsa_sign_setup; - ibmca_dsa.dsa_do_verify = meth2->dsa_do_verify; -#endif - -#ifndef OPENSSL_NO_DH - /* Much the same for Diffie-Hellman */ - meth3 = DH_OpenSSL(); - ibmca_dh.generate_key = meth3->generate_key; - ibmca_dh.compute_key = meth3->compute_key; -#endif - - /* Ensure the ibmca error handling is set up */ - ERR_load_IBMCA_strings(); - return 1; - } - -static ENGINE *engine_ibmca(void) - { - ENGINE *ret = ENGINE_new(); - if(!ret) - return NULL; - if(!bind_helper(ret)) - { - ENGINE_free(ret); - return NULL; - } - return ret; - } - -#ifdef ENGINE_DYNAMIC_SUPPORT -static -#endif -void ENGINE_load_ibmca(void) - { - /* Copied from eng_[openssl|dyn].c */ - ENGINE *toadd = engine_ibmca(); - if(!toadd) return; - ENGINE_add(toadd); - ENGINE_free(toadd); - ERR_clear_error(); - } - -/* Destructor (complements the "ENGINE_ibmca()" constructor) */ -static int ibmca_destroy(ENGINE *e) - { - /* Unload the ibmca error strings so any error state including our - * functs or reasons won't lead to a segfault (they simply get displayed - * without corresponding string data because none will be found). */ - ERR_unload_IBMCA_strings(); - return 1; - } - - -/* This is a process-global DSO handle used for loading and unloading - * the Ibmca library. NB: This is only set (or unset) during an - * init() or finish() call (reference counts permitting) and they're - * operating with global locks, so this should be thread-safe - * implicitly. */ - -static DSO *ibmca_dso = NULL; - -/* These are the function pointers that are (un)set when the library has - * successfully (un)loaded. */ - -static unsigned int (ICA_CALL *p_icaOpenAdapter)(); -static unsigned int (ICA_CALL *p_icaCloseAdapter)(); -static unsigned int (ICA_CALL *p_icaRsaModExpo)(); -static unsigned int (ICA_CALL *p_icaRandomNumberGenerate)(); -static unsigned int (ICA_CALL *p_icaRsaCrt)(); - -/* utility function to obtain a context */ -static int get_context(ICA_ADAPTER_HANDLE *p_handle) - { - unsigned int status=0; - - status = p_icaOpenAdapter(0, p_handle); - if(status != 0) - return 0; - return 1; - } - -/* similarly to release one. */ -static void release_context(ICA_ADAPTER_HANDLE handle) - { - p_icaCloseAdapter(handle); - } - -/* (de)initialisation functions. */ -static int ibmca_init(ENGINE *e) - { - - void (*p1)(); - void (*p2)(); - void (*p3)(); - void (*p4)(); - void (*p5)(); - - if(ibmca_dso != NULL) - { - IBMCAerr(IBMCA_F_IBMCA_INIT,IBMCA_R_ALREADY_LOADED); - goto err; - } - /* Attempt to load libatasi.so/atasi.dll/whatever. Needs to be - * changed unfortunately because the Ibmca drivers don't have - * standard library names that can be platform-translated well. */ - /* TODO: Work out how to actually map to the names the Ibmca - * drivers really use - for now a symbollic link needs to be - * created on the host system from libatasi.so to atasi.so on - * unix variants. */ - - /* WJH XXX check name translation */ - - ibmca_dso = DSO_load(NULL, IBMCA_LIBNAME, NULL, - /* DSO_FLAG_NAME_TRANSLATION */ 0); - if(ibmca_dso == NULL) - { - IBMCAerr(IBMCA_F_IBMCA_INIT,IBMCA_R_DSO_FAILURE); - goto err; - } - - if(!(p1 = DSO_bind_func( - ibmca_dso, IBMCA_F1)) || - !(p2 = DSO_bind_func( - ibmca_dso, IBMCA_F2)) || - !(p3 = DSO_bind_func( - ibmca_dso, IBMCA_F3)) || - !(p4 = DSO_bind_func( - ibmca_dso, IBMCA_F4)) || - !(p5 = DSO_bind_func( - ibmca_dso, IBMCA_F5))) - { - IBMCAerr(IBMCA_F_IBMCA_INIT,IBMCA_R_DSO_FAILURE); - goto err; - } - - /* Copy the pointers */ - - p_icaOpenAdapter = (unsigned int (ICA_CALL *)())p1; - p_icaCloseAdapter = (unsigned int (ICA_CALL *)())p2; - p_icaRsaModExpo = (unsigned int (ICA_CALL *)())p3; - p_icaRandomNumberGenerate = (unsigned int (ICA_CALL *)())p4; - p_icaRsaCrt = (unsigned int (ICA_CALL *)())p5; - - if(!get_context(&handle)) - { - IBMCAerr(IBMCA_F_IBMCA_INIT,IBMCA_R_UNIT_FAILURE); - goto err; - } - - return 1; - err: - if(ibmca_dso) - DSO_free(ibmca_dso); - - p_icaOpenAdapter = NULL; - p_icaCloseAdapter = NULL; - p_icaRsaModExpo = NULL; - p_icaRandomNumberGenerate = NULL; - - return 0; - } - -static int ibmca_finish(ENGINE *e) - { - if(ibmca_dso == NULL) - { - IBMCAerr(IBMCA_F_IBMCA_FINISH,IBMCA_R_NOT_LOADED); - return 0; - } - release_context(handle); - if(!DSO_free(ibmca_dso)) - { - IBMCAerr(IBMCA_F_IBMCA_FINISH,IBMCA_R_DSO_FAILURE); - return 0; - } - ibmca_dso = NULL; - - return 1; - } - -static int ibmca_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)()) - { - int initialised = ((ibmca_dso == NULL) ? 0 : 1); - switch(cmd) - { - case IBMCA_CMD_SO_PATH: - if(p == NULL) - { - IBMCAerr(IBMCA_F_IBMCA_CTRL,ERR_R_PASSED_NULL_PARAMETER); - return 0; - } - if(initialised) - { - IBMCAerr(IBMCA_F_IBMCA_CTRL,IBMCA_R_ALREADY_LOADED); - return 0; - } - IBMCA_LIBNAME = (const char *)p; - return 1; - default: - break; - } - IBMCAerr(IBMCA_F_IBMCA_CTRL,IBMCA_R_CTRL_COMMAND_NOT_IMPLEMENTED); - return 0; - } - - -static int ibmca_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, - const BIGNUM *m, BN_CTX *ctx) - { - /* I need somewhere to store temporary serialised values for - * use with the Ibmca API calls. A neat cheat - I'll use - * BIGNUMs from the BN_CTX but access their arrays directly as - * byte arrays . This way I don't have to clean anything - * up. */ - - BIGNUM *argument=NULL; - BIGNUM *result=NULL; - BIGNUM *key=NULL; - int to_return; - int inLen, outLen, tmpLen; - - - ICA_KEY_RSA_MODEXPO *publKey=NULL; - unsigned int rc; - - to_return = 0; /* expect failure */ - - if(!ibmca_dso) - { - IBMCAerr(IBMCA_F_IBMCA_MOD_EXP,IBMCA_R_NOT_LOADED); - goto err; - } - /* Prepare the params */ - BN_CTX_start(ctx); - argument = BN_CTX_get(ctx); - result = BN_CTX_get(ctx); - key = BN_CTX_get(ctx); - - if( !argument || !result || !key) - { - IBMCAerr(IBMCA_F_IBMCA_MOD_EXP,IBMCA_R_BN_CTX_FULL); - goto err; - } - - - if(!bn_wexpand(argument, m->top) || !bn_wexpand(result, m->top) || - !bn_wexpand(key, sizeof(*publKey)/BN_BYTES)) - - { - IBMCAerr(IBMCA_F_IBMCA_MOD_EXP,IBMCA_R_BN_EXPAND_FAIL); - goto err; - } - - publKey = (ICA_KEY_RSA_MODEXPO *)key->d; - - if (publKey == NULL) - { - goto err; - } - memset(publKey, 0, sizeof(ICA_KEY_RSA_MODEXPO)); - - publKey->keyType = CORRECT_ENDIANNESS(ME_KEY_TYPE); - publKey->keyLength = CORRECT_ENDIANNESS(sizeof(ICA_KEY_RSA_MODEXPO)); - publKey->expOffset = (char *) publKey->keyRecord - (char *) publKey; - - /* A quirk of the card: the exponent length has to be the same - as the modulus (key) length */ - - outLen = BN_num_bytes(m); - -/* check for modulus length SAB*/ - if (outLen > 256 ) { - IBMCAerr(IBMCA_F_IBMCA_MOD_EXP,IBMCA_R_MEXP_LENGTH_TO_LARGE); - goto err; - } -/* check for modulus length SAB*/ - - - publKey->expLength = publKey->nLength = outLen; -/* SAB Check for underflow condition - the size of the exponent is less than the size of the parameter - then we have a big problem and will underflow the keyRecord - buffer. Bad stuff could happen then -*/ -if (outLen < BN_num_bytes(p)){ - IBMCAerr(IBMCA_F_IBMCA_MOD_EXP,IBMCA_R_UNDERFLOW_KEYRECORD); - goto err; -} -/* SAB End check for underflow */ - - - BN_bn2bin(p, &publKey->keyRecord[publKey->expLength - - BN_num_bytes(p)]); - BN_bn2bin(m, &publKey->keyRecord[publKey->expLength]); - - - - publKey->modulusBitLength = CORRECT_ENDIANNESS(publKey->nLength * 8); - publKey->nOffset = CORRECT_ENDIANNESS(publKey->expOffset + - publKey->expLength); - - publKey->expOffset = CORRECT_ENDIANNESS((char *) publKey->keyRecord - - (char *) publKey); - - tmpLen = outLen; - publKey->expLength = publKey->nLength = CORRECT_ENDIANNESS(tmpLen); - - /* Prepare the argument */ - - memset(argument->d, 0, outLen); - BN_bn2bin(a, (unsigned char *)argument->d + outLen - - BN_num_bytes(a)); - - inLen = outLen; - - /* Perform the operation */ - - if( (rc = p_icaRsaModExpo(handle, inLen,(unsigned char *)argument->d, - publKey, &outLen, (unsigned char *)result->d)) - !=0 ) - - { - printf("rc = %d\n", rc); - IBMCAerr(IBMCA_F_IBMCA_MOD_EXP,IBMCA_R_REQUEST_FAILED); - goto err; - } - - - /* Convert the response */ - BN_bin2bn((unsigned char *)result->d, outLen, r); - to_return = 1; - err: - BN_CTX_end(ctx); - return to_return; - } - -#ifndef OPENSSL_NO_RSA -static int ibmca_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa) - { - BN_CTX *ctx; - int to_return = 0; - - if((ctx = BN_CTX_new()) == NULL) - goto err; - if(!rsa->p || !rsa->q || !rsa->dmp1 || !rsa->dmq1 || !rsa->iqmp) - { - if(!rsa->d || !rsa->n) - { - IBMCAerr(IBMCA_F_IBMCA_RSA_MOD_EXP, - IBMCA_R_MISSING_KEY_COMPONENTS); - goto err; - } - to_return = ibmca_mod_exp(r0, I, rsa->d, rsa->n, ctx); - } - else - { - to_return = ibmca_mod_exp_crt(r0, I, rsa->p, rsa->q, rsa->dmp1, - rsa->dmq1, rsa->iqmp, ctx); - } - err: - if(ctx) - BN_CTX_free(ctx); - return to_return; - } -#endif - -/* Ein kleines chinesisches "Restessen" */ -static int ibmca_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, - const BIGNUM *q, const BIGNUM *dmp1, - const BIGNUM *dmq1, const BIGNUM *iqmp, BN_CTX *ctx) - { - - BIGNUM *argument = NULL; - BIGNUM *result = NULL; - BIGNUM *key = NULL; - - int to_return = 0; /* expect failure */ - - char *pkey=NULL; - ICA_KEY_RSA_CRT *privKey=NULL; - int inLen, outLen; - - int rc; - unsigned int offset, pSize, qSize; -/* SAB New variables */ - unsigned int keyRecordSize; - unsigned int pbytes = BN_num_bytes(p); - unsigned int qbytes = BN_num_bytes(q); - unsigned int dmp1bytes = BN_num_bytes(dmp1); - unsigned int dmq1bytes = BN_num_bytes(dmq1); - unsigned int iqmpbytes = BN_num_bytes(iqmp); - - /* Prepare the params */ - - BN_CTX_start(ctx); - argument = BN_CTX_get(ctx); - result = BN_CTX_get(ctx); - key = BN_CTX_get(ctx); - - if(!argument || !result || !key) - { - IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT,IBMCA_R_BN_CTX_FULL); - goto err; - } - - if(!bn_wexpand(argument, p->top + q->top) || - !bn_wexpand(result, p->top + q->top) || - !bn_wexpand(key, sizeof(*privKey)/BN_BYTES )) - { - IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT,IBMCA_R_BN_EXPAND_FAIL); - goto err; - } - - - privKey = (ICA_KEY_RSA_CRT *)key->d; -/* SAB Add check for total size in bytes of the parms does not exceed - the buffer space we have - do this first -*/ - keyRecordSize = pbytes+qbytes+dmp1bytes+dmq1bytes+iqmpbytes; - if ( keyRecordSize > sizeof(privKey->keyRecord )) { - IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT,IBMCA_R_OPERANDS_TO_LARGE); - goto err; - } - - if ( (qbytes + dmq1bytes) > 256 ){ - IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT,IBMCA_R_OPERANDS_TO_LARGE); - goto err; - } - - if ( pbytes + dmp1bytes > 256 ) { - IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT,IBMCA_R_OPERANDS_TO_LARGE); - goto err; - } - -/* end SAB additions */ - - memset(privKey, 0, sizeof(ICA_KEY_RSA_CRT)); - privKey->keyType = CORRECT_ENDIANNESS(CRT_KEY_TYPE); - privKey->keyLength = CORRECT_ENDIANNESS(sizeof(ICA_KEY_RSA_CRT)); - privKey->modulusBitLength = - CORRECT_ENDIANNESS(BN_num_bytes(q) * 2 * 8); - - /* - * p,dp & qInv are 1 QWORD Larger - */ - privKey->pLength = CORRECT_ENDIANNESS(BN_num_bytes(p)+8); - privKey->qLength = CORRECT_ENDIANNESS(BN_num_bytes(q)); - privKey->dpLength = CORRECT_ENDIANNESS(BN_num_bytes(dmp1)+8); - privKey->dqLength = CORRECT_ENDIANNESS(BN_num_bytes(dmq1)); - privKey->qInvLength = CORRECT_ENDIANNESS(BN_num_bytes(iqmp)+8); - - offset = (char *) privKey->keyRecord - - (char *) privKey; - - qSize = BN_num_bytes(q); - pSize = qSize + 8; /* 1 QWORD larger */ - - -/* SAB probably aittle redundant, but we'll verify that each of the - components which make up a key record sent ot the card does not exceed - the space that is allocated for it. this handles the case where even if - the total length does not exceed keyrecord zied, if the operands are funny sized -they could cause potential side affects on either the card or the result */ - - if ( (pbytes > pSize) || (dmp1bytes > pSize) || - (iqmpbytes > pSize) || ( qbytes >qSize) || - (dmq1bytes > qSize) ) { - IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_OPERANDS_TO_LARGE); - goto err; - - } - - - privKey->dpOffset = CORRECT_ENDIANNESS(offset); - - offset += pSize; - privKey->dqOffset = CORRECT_ENDIANNESS(offset); - - offset += qSize; - privKey->pOffset = CORRECT_ENDIANNESS(offset); - - offset += pSize; - privKey->qOffset = CORRECT_ENDIANNESS(offset); - - offset += qSize; - privKey->qInvOffset = CORRECT_ENDIANNESS(offset); - - pkey = (char *) privKey->keyRecord; - - -/* SAB first check that we don;t under flow the buffer */ - if ( pSize < pbytes ) { - IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_UNDERFLOW_CONDITION); - goto err; - } - - /* pkey += pSize - BN_num_bytes(p); WROING this should be dmp1) */ - pkey += pSize - BN_num_bytes(dmp1); - BN_bn2bin(dmp1, pkey); - pkey += BN_num_bytes(dmp1); /* move the pointer */ - - BN_bn2bin(dmq1, pkey); /* Copy over dmq1 */ - - pkey += qSize; /* move pointer */ - pkey += pSize - BN_num_bytes(p); /* set up for zero padding of next field */ - - BN_bn2bin(p, pkey); - pkey += BN_num_bytes(p); /* increment pointer by number of bytes moved */ - - BN_bn2bin(q, pkey); - pkey += qSize ; /* move the pointer */ - pkey += pSize - BN_num_bytes(iqmp); /* Adjust for padding */ - BN_bn2bin(iqmp, pkey); - - /* Prepare the argument and response */ - - outLen = CORRECT_ENDIANNESS(privKey->qLength) * 2; /* Correct endianess is used - because the fields were converted above */ - - if (outLen > 256) { - IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT,IBMCA_R_OUTLEN_TO_LARGE); - goto err; - } - - /* SAB check for underflow here on the argeument */ - if ( outLen < BN_num_bytes(a)) { - IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT,IBMCA_R_UNDERFLOW_CONDITION); - goto err; - } - - BN_bn2bin(a, (unsigned char *)argument->d + outLen - - BN_num_bytes(a)); - inLen = outLen; - - memset(result->d, 0, outLen); - - /* Perform the operation */ - - if ( (rc = p_icaRsaCrt(handle, inLen, (unsigned char *)argument->d, - privKey, &outLen, (unsigned char *)result->d)) != 0) - { - printf("rc = %d\n", rc); - IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT,IBMCA_R_REQUEST_FAILED); - goto err; - } - - /* Convert the response */ - - BN_bin2bn((unsigned char *)result->d, outLen, r); - to_return = 1; - - err: - BN_CTX_end(ctx); - return to_return; - - } - -#ifndef OPENSSL_NO_DSA -/* This code was liberated and adapted from the commented-out code in - * dsa_ossl.c. Because of the unoptimised form of the Ibmca acceleration - * (it doesn't have a CRT form for RSA), this function means that an - * Ibmca system running with a DSA server certificate can handshake - * around 5 or 6 times faster/more than an equivalent system running with - * RSA. Just check out the "signs" statistics from the RSA and DSA parts - * of "openssl speed -engine ibmca dsa1024 rsa1024". */ -static int ibmca_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1, - BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m, - BN_CTX *ctx, BN_MONT_CTX *in_mont) - { - BIGNUM t; - int to_return = 0; - - BN_init(&t); - /* let rr = a1 ^ p1 mod m */ - if (!ibmca_mod_exp(rr,a1,p1,m,ctx)) goto end; - /* let t = a2 ^ p2 mod m */ - if (!ibmca_mod_exp(&t,a2,p2,m,ctx)) goto end; - /* let rr = rr * t mod m */ - if (!BN_mod_mul(rr,rr,&t,m,ctx)) goto end; - to_return = 1; - end: - BN_free(&t); - return to_return; - } - - -static int ibmca_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a, - const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx, - BN_MONT_CTX *m_ctx) - { - return ibmca_mod_exp(r, a, p, m, ctx); - } -#endif - -/* This function is aliased to mod_exp (with the mont stuff dropped). */ -static int ibmca_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, - const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx) - { - return ibmca_mod_exp(r, a, p, m, ctx); - } - -#ifndef OPENSSL_NO_DH -/* This function is aliased to mod_exp (with the dh and mont dropped). */ -static int ibmca_mod_exp_dh(DH const *dh, BIGNUM *r, - const BIGNUM *a, const BIGNUM *p, - const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx) - { - return ibmca_mod_exp(r, a, p, m, ctx); - } -#endif - -/* Random bytes are good */ -static int ibmca_rand_bytes(unsigned char *buf, int num) - { - int to_return = 0; /* assume failure */ - unsigned int ret; - - - if(handle == 0) - { - IBMCAerr(IBMCA_F_IBMCA_RAND_BYTES,IBMCA_R_NOT_INITIALISED); - goto err; - } - - ret = p_icaRandomNumberGenerate(handle, num, buf); - if (ret < 0) - { - IBMCAerr(IBMCA_F_IBMCA_RAND_BYTES,IBMCA_R_REQUEST_FAILED); - goto err; - } - to_return = 1; - err: - return to_return; - } - -static int ibmca_rand_status(void) - { - return 1; - } - -/* This stuff is needed if this ENGINE is being compiled into a self-contained - * shared-library. */ -#ifdef ENGINE_DYNAMIC_SUPPORT -static int bind_fn(ENGINE *e, const char *id) - { - if(id && (strcmp(id, engine_ibmca_id) != 0)) /* WJH XXX */ - return 0; - if(!bind_helper(e)) - return 0; - return 1; - } -IMPLEMENT_DYNAMIC_CHECK_FN() -IMPLEMENT_DYNAMIC_BIND_FN(bind_fn) -#endif /* ENGINE_DYNAMIC_SUPPORT */ - - +/* crypto/engine/hw_ibmca.c */ +/* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL + * project 2000. + */ +/* ==================================================================== + * Copyright (c) 1999 The OpenSSL Project. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. All advertising materials mentioning features or use of this + * software must display the following acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" + * + * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For written permission, please contact + * licensing@OpenSSL.org. + * + * 5. Products derived from this software may not be called "OpenSSL" + * nor may "OpenSSL" appear in their names without prior written + * permission of the OpenSSL Project. + * + * 6. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" + * + * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY + * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR + * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * ==================================================================== + * + * This product includes cryptographic software written by Eric Young + * (eay@cryptsoft.com). This product includes software written by Tim + * Hudson (tjh@cryptsoft.com). + * + */ + +/* (C) COPYRIGHT International Business Machines Corp. 2001 */ + +#include +#include +#include +#include + +#ifndef OPENSSL_NO_HW +#ifndef OPENSSL_NO_HW_IBMCA + +#ifdef FLAT_INC +#include "ica_openssl_api.h" +#else +#include "vendor_defns/ica_openssl_api.h" +#endif + +#define IBMCA_LIB_NAME "ibmca engine" +#include "hw_ibmca_err.c" + +static int ibmca_destroy(ENGINE *e); +static int ibmca_init(ENGINE *e); +static int ibmca_finish(ENGINE *e); +static int ibmca_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)()); + +static const char *IBMCA_F1 = "icaOpenAdapter"; +static const char *IBMCA_F2 = "icaCloseAdapter"; +static const char *IBMCA_F3 = "icaRsaModExpo"; +static const char *IBMCA_F4 = "icaRandomNumberGenerate"; +static const char *IBMCA_F5 = "icaRsaCrt"; + +ICA_ADAPTER_HANDLE handle=0; + +/* BIGNUM stuff */ +static int ibmca_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, + const BIGNUM *m, BN_CTX *ctx); + +static int ibmca_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, + const BIGNUM *q, const BIGNUM *dmp1, const BIGNUM *dmq1, + const BIGNUM *iqmp, BN_CTX *ctx); + +#ifndef OPENSSL_NO_RSA +/* RSA stuff */ +static int ibmca_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa); +#endif + +/* This function is aliased to mod_exp (with the mont stuff dropped). */ +static int ibmca_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, + const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx); + +#ifndef OPENSSL_NO_DSA +/* DSA stuff */ +static int ibmca_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1, + BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m, + BN_CTX *ctx, BN_MONT_CTX *in_mont); +static int ibmca_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a, + const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx, + BN_MONT_CTX *m_ctx); +#endif + +#ifndef OPENSSL_NO_DH +/* DH stuff */ +/* This function is alised to mod_exp (with the DH and mont dropped). */ +static int ibmca_mod_exp_dh(const DH *dh, BIGNUM *r, + const BIGNUM *a, const BIGNUM *p, + const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx); +#endif + +/* RAND stuff */ +static int ibmca_rand_bytes(unsigned char *buf, int num); +static int ibmca_rand_status(void); + + +/* WJH - check for more commands, like in nuron */ + +/* The definitions for control commands specific to this engine */ +#define IBMCA_CMD_SO_PATH ENGINE_CMD_BASE +static const ENGINE_CMD_DEFN ibmca_cmd_defns[] = { + {IBMCA_CMD_SO_PATH, + "SO_PATH", + "Specifies the path to the 'atasi' shared library", + ENGINE_CMD_FLAG_STRING}, + {0, NULL, NULL, 0} + }; + +#ifndef OPENSSL_NO_RSA +/* Our internal RSA_METHOD that we provide pointers to */ +static RSA_METHOD ibmca_rsa = + { + "Ibmca RSA method", + NULL, + NULL, + NULL, + NULL, + ibmca_rsa_mod_exp, + ibmca_mod_exp_mont, + NULL, + NULL, + 0, + NULL, + NULL, + NULL + }; +#endif + +#ifndef OPENSSL_NO_DSA +/* Our internal DSA_METHOD that we provide pointers to */ +static DSA_METHOD ibmca_dsa = + { + "Ibmca DSA method", + NULL, /* dsa_do_sign */ + NULL, /* dsa_sign_setup */ + NULL, /* dsa_do_verify */ + ibmca_dsa_mod_exp, /* dsa_mod_exp */ + ibmca_mod_exp_dsa, /* bn_mod_exp */ + NULL, /* init */ + NULL, /* finish */ + 0, /* flags */ + NULL /* app_data */ + }; +#endif + +#ifndef OPENSSL_NO_DH +/* Our internal DH_METHOD that we provide pointers to */ +static DH_METHOD ibmca_dh = + { + "Ibmca DH method", + NULL, + NULL, + ibmca_mod_exp_dh, + NULL, + NULL, + 0, + NULL + }; +#endif + +static RAND_METHOD ibmca_rand = + { + /* "IBMCA RAND method", */ + NULL, + ibmca_rand_bytes, + NULL, + NULL, + ibmca_rand_bytes, + ibmca_rand_status, + }; + +/* Constants used when creating the ENGINE */ +static const char *engine_ibmca_id = "ibmca"; +static const char *engine_ibmca_name = "Ibmca hardware engine support"; + +/* This internal function is used by ENGINE_ibmca() and possibly by the + * "dynamic" ENGINE support too */ +static int bind_helper(ENGINE *e) + { +#ifndef OPENSSL_NO_RSA + const RSA_METHOD *meth1; +#endif +#ifndef OPENSSL_NO_DSA + const DSA_METHOD *meth2; +#endif +#ifndef OPENSSL_NO_DH + const DH_METHOD *meth3; +#endif + if(!ENGINE_set_id(e, engine_ibmca_id) || + !ENGINE_set_name(e, engine_ibmca_name) || +#ifndef OPENSSL_NO_RSA + !ENGINE_set_RSA(e, &ibmca_rsa) || +#endif +#ifndef OPENSSL_NO_DSA + !ENGINE_set_DSA(e, &ibmca_dsa) || +#endif +#ifndef OPENSSL_NO_DH + !ENGINE_set_DH(e, &ibmca_dh) || +#endif + !ENGINE_set_RAND(e, &ibmca_rand) || + !ENGINE_set_destroy_function(e, ibmca_destroy) || + !ENGINE_set_init_function(e, ibmca_init) || + !ENGINE_set_finish_function(e, ibmca_finish) || + !ENGINE_set_ctrl_function(e, ibmca_ctrl) || + !ENGINE_set_cmd_defns(e, ibmca_cmd_defns)) + return 0; + +#ifndef OPENSSL_NO_RSA + /* We know that the "PKCS1_SSLeay()" functions hook properly + * to the ibmca-specific mod_exp and mod_exp_crt so we use + * those functions. NB: We don't use ENGINE_openssl() or + * anything "more generic" because something like the RSAref + * code may not hook properly, and if you own one of these + * cards then you have the right to do RSA operations on it + * anyway! */ + meth1 = RSA_PKCS1_SSLeay(); + ibmca_rsa.rsa_pub_enc = meth1->rsa_pub_enc; + ibmca_rsa.rsa_pub_dec = meth1->rsa_pub_dec; + ibmca_rsa.rsa_priv_enc = meth1->rsa_priv_enc; + ibmca_rsa.rsa_priv_dec = meth1->rsa_priv_dec; +#endif + +#ifndef OPENSSL_NO_DSA + /* Use the DSA_OpenSSL() method and just hook the mod_exp-ish + * bits. */ + meth2 = DSA_OpenSSL(); + ibmca_dsa.dsa_do_sign = meth2->dsa_do_sign; + ibmca_dsa.dsa_sign_setup = meth2->dsa_sign_setup; + ibmca_dsa.dsa_do_verify = meth2->dsa_do_verify; +#endif + +#ifndef OPENSSL_NO_DH + /* Much the same for Diffie-Hellman */ + meth3 = DH_OpenSSL(); + ibmca_dh.generate_key = meth3->generate_key; + ibmca_dh.compute_key = meth3->compute_key; +#endif + + /* Ensure the ibmca error handling is set up */ + ERR_load_IBMCA_strings(); + return 1; + } + +static ENGINE *engine_ibmca(void) + { + ENGINE *ret = ENGINE_new(); + if(!ret) + return NULL; + if(!bind_helper(ret)) + { + ENGINE_free(ret); + return NULL; + } + return ret; + } + +#ifdef ENGINE_DYNAMIC_SUPPORT +static +#endif +void ENGINE_load_ibmca(void) + { + /* Copied from eng_[openssl|dyn].c */ + ENGINE *toadd = engine_ibmca(); + if(!toadd) return; + ENGINE_add(toadd); + ENGINE_free(toadd); + ERR_clear_error(); + } + +/* Destructor (complements the "ENGINE_ibmca()" constructor) */ +static int ibmca_destroy(ENGINE *e) + { + /* Unload the ibmca error strings so any error state including our + * functs or reasons won't lead to a segfault (they simply get displayed + * without corresponding string data because none will be found). */ + ERR_unload_IBMCA_strings(); + return 1; + } + + +/* This is a process-global DSO handle used for loading and unloading + * the Ibmca library. NB: This is only set (or unset) during an + * init() or finish() call (reference counts permitting) and they're + * operating with global locks, so this should be thread-safe + * implicitly. */ + +static DSO *ibmca_dso = NULL; + +/* These are the function pointers that are (un)set when the library has + * successfully (un)loaded. */ + +static unsigned int (ICA_CALL *p_icaOpenAdapter)(); +static unsigned int (ICA_CALL *p_icaCloseAdapter)(); +static unsigned int (ICA_CALL *p_icaRsaModExpo)(); +static unsigned int (ICA_CALL *p_icaRandomNumberGenerate)(); +static unsigned int (ICA_CALL *p_icaRsaCrt)(); + +/* utility function to obtain a context */ +static int get_context(ICA_ADAPTER_HANDLE *p_handle) + { + unsigned int status=0; + + status = p_icaOpenAdapter(0, p_handle); + if(status != 0) + return 0; + return 1; + } + +/* similarly to release one. */ +static void release_context(ICA_ADAPTER_HANDLE handle) + { + p_icaCloseAdapter(handle); + } + +/* (de)initialisation functions. */ +static int ibmca_init(ENGINE *e) + { + + void (*p1)(); + void (*p2)(); + void (*p3)(); + void (*p4)(); + void (*p5)(); + + if(ibmca_dso != NULL) + { + IBMCAerr(IBMCA_F_IBMCA_INIT,IBMCA_R_ALREADY_LOADED); + goto err; + } + /* Attempt to load libatasi.so/atasi.dll/whatever. Needs to be + * changed unfortunately because the Ibmca drivers don't have + * standard library names that can be platform-translated well. */ + /* TODO: Work out how to actually map to the names the Ibmca + * drivers really use - for now a symbollic link needs to be + * created on the host system from libatasi.so to atasi.so on + * unix variants. */ + + /* WJH XXX check name translation */ + + ibmca_dso = DSO_load(NULL, IBMCA_LIBNAME, NULL, + /* DSO_FLAG_NAME_TRANSLATION */ 0); + if(ibmca_dso == NULL) + { + IBMCAerr(IBMCA_F_IBMCA_INIT,IBMCA_R_DSO_FAILURE); + goto err; + } + + if(!(p1 = DSO_bind_func( + ibmca_dso, IBMCA_F1)) || + !(p2 = DSO_bind_func( + ibmca_dso, IBMCA_F2)) || + !(p3 = DSO_bind_func( + ibmca_dso, IBMCA_F3)) || + !(p4 = DSO_bind_func( + ibmca_dso, IBMCA_F4)) || + !(p5 = DSO_bind_func( + ibmca_dso, IBMCA_F5))) + { + IBMCAerr(IBMCA_F_IBMCA_INIT,IBMCA_R_DSO_FAILURE); + goto err; + } + + /* Copy the pointers */ + + p_icaOpenAdapter = (unsigned int (ICA_CALL *)())p1; + p_icaCloseAdapter = (unsigned int (ICA_CALL *)())p2; + p_icaRsaModExpo = (unsigned int (ICA_CALL *)())p3; + p_icaRandomNumberGenerate = (unsigned int (ICA_CALL *)())p4; + p_icaRsaCrt = (unsigned int (ICA_CALL *)())p5; + + if(!get_context(&handle)) + { + IBMCAerr(IBMCA_F_IBMCA_INIT,IBMCA_R_UNIT_FAILURE); + goto err; + } + + return 1; + err: + if(ibmca_dso) + DSO_free(ibmca_dso); + + p_icaOpenAdapter = NULL; + p_icaCloseAdapter = NULL; + p_icaRsaModExpo = NULL; + p_icaRandomNumberGenerate = NULL; + + return 0; + } + +static int ibmca_finish(ENGINE *e) + { + if(ibmca_dso == NULL) + { + IBMCAerr(IBMCA_F_IBMCA_FINISH,IBMCA_R_NOT_LOADED); + return 0; + } + release_context(handle); + if(!DSO_free(ibmca_dso)) + { + IBMCAerr(IBMCA_F_IBMCA_FINISH,IBMCA_R_DSO_FAILURE); + return 0; + } + ibmca_dso = NULL; + + return 1; + } + +static int ibmca_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)()) + { + int initialised = ((ibmca_dso == NULL) ? 0 : 1); + switch(cmd) + { + case IBMCA_CMD_SO_PATH: + if(p == NULL) + { + IBMCAerr(IBMCA_F_IBMCA_CTRL,ERR_R_PASSED_NULL_PARAMETER); + return 0; + } + if(initialised) + { + IBMCAerr(IBMCA_F_IBMCA_CTRL,IBMCA_R_ALREADY_LOADED); + return 0; + } + IBMCA_LIBNAME = (const char *)p; + return 1; + default: + break; + } + IBMCAerr(IBMCA_F_IBMCA_CTRL,IBMCA_R_CTRL_COMMAND_NOT_IMPLEMENTED); + return 0; + } + + +static int ibmca_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, + const BIGNUM *m, BN_CTX *ctx) + { + /* I need somewhere to store temporary serialised values for + * use with the Ibmca API calls. A neat cheat - I'll use + * BIGNUMs from the BN_CTX but access their arrays directly as + * byte arrays . This way I don't have to clean anything + * up. */ + + BIGNUM *argument=NULL; + BIGNUM *result=NULL; + BIGNUM *key=NULL; + int to_return; + int inLen, outLen, tmpLen; + + + ICA_KEY_RSA_MODEXPO *publKey=NULL; + unsigned int rc; + + to_return = 0; /* expect failure */ + + if(!ibmca_dso) + { + IBMCAerr(IBMCA_F_IBMCA_MOD_EXP,IBMCA_R_NOT_LOADED); + goto err; + } + /* Prepare the params */ + BN_CTX_start(ctx); + argument = BN_CTX_get(ctx); + result = BN_CTX_get(ctx); + key = BN_CTX_get(ctx); + + if( !argument || !result || !key) + { + IBMCAerr(IBMCA_F_IBMCA_MOD_EXP,IBMCA_R_BN_CTX_FULL); + goto err; + } + + + if(!bn_wexpand(argument, m->top) || !bn_wexpand(result, m->top) || + !bn_wexpand(key, sizeof(*publKey)/BN_BYTES)) + + { + IBMCAerr(IBMCA_F_IBMCA_MOD_EXP,IBMCA_R_BN_EXPAND_FAIL); + goto err; + } + + publKey = (ICA_KEY_RSA_MODEXPO *)key->d; + + if (publKey == NULL) + { + goto err; + } + memset(publKey, 0, sizeof(ICA_KEY_RSA_MODEXPO)); + + publKey->keyType = CORRECT_ENDIANNESS(ME_KEY_TYPE); + publKey->keyLength = CORRECT_ENDIANNESS(sizeof(ICA_KEY_RSA_MODEXPO)); + publKey->expOffset = (char *) publKey->keyRecord - (char *) publKey; + + /* A quirk of the card: the exponent length has to be the same + as the modulus (key) length */ + + outLen = BN_num_bytes(m); + +/* check for modulus length SAB*/ + if (outLen > 256 ) { + IBMCAerr(IBMCA_F_IBMCA_MOD_EXP,IBMCA_R_MEXP_LENGTH_TO_LARGE); + goto err; + } +/* check for modulus length SAB*/ + + + publKey->expLength = publKey->nLength = outLen; +/* SAB Check for underflow condition + the size of the exponent is less than the size of the parameter + then we have a big problem and will underflow the keyRecord + buffer. Bad stuff could happen then +*/ +if (outLen < BN_num_bytes(p)){ + IBMCAerr(IBMCA_F_IBMCA_MOD_EXP,IBMCA_R_UNDERFLOW_KEYRECORD); + goto err; +} +/* SAB End check for underflow */ + + + BN_bn2bin(p, &publKey->keyRecord[publKey->expLength - + BN_num_bytes(p)]); + BN_bn2bin(m, &publKey->keyRecord[publKey->expLength]); + + + + publKey->modulusBitLength = CORRECT_ENDIANNESS(publKey->nLength * 8); + publKey->nOffset = CORRECT_ENDIANNESS(publKey->expOffset + + publKey->expLength); + + publKey->expOffset = CORRECT_ENDIANNESS((char *) publKey->keyRecord - + (char *) publKey); + + tmpLen = outLen; + publKey->expLength = publKey->nLength = CORRECT_ENDIANNESS(tmpLen); + + /* Prepare the argument */ + + memset(argument->d, 0, outLen); + BN_bn2bin(a, (unsigned char *)argument->d + outLen - + BN_num_bytes(a)); + + inLen = outLen; + + /* Perform the operation */ + + if( (rc = p_icaRsaModExpo(handle, inLen,(unsigned char *)argument->d, + publKey, &outLen, (unsigned char *)result->d)) + !=0 ) + + { + printf("rc = %d\n", rc); + IBMCAerr(IBMCA_F_IBMCA_MOD_EXP,IBMCA_R_REQUEST_FAILED); + goto err; + } + + + /* Convert the response */ + BN_bin2bn((unsigned char *)result->d, outLen, r); + to_return = 1; + err: + BN_CTX_end(ctx); + return to_return; + } + +#ifndef OPENSSL_NO_RSA +static int ibmca_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa) + { + BN_CTX *ctx; + int to_return = 0; + + if((ctx = BN_CTX_new()) == NULL) + goto err; + if(!rsa->p || !rsa->q || !rsa->dmp1 || !rsa->dmq1 || !rsa->iqmp) + { + if(!rsa->d || !rsa->n) + { + IBMCAerr(IBMCA_F_IBMCA_RSA_MOD_EXP, + IBMCA_R_MISSING_KEY_COMPONENTS); + goto err; + } + to_return = ibmca_mod_exp(r0, I, rsa->d, rsa->n, ctx); + } + else + { + to_return = ibmca_mod_exp_crt(r0, I, rsa->p, rsa->q, rsa->dmp1, + rsa->dmq1, rsa->iqmp, ctx); + } + err: + if(ctx) + BN_CTX_free(ctx); + return to_return; + } +#endif + +/* Ein kleines chinesisches "Restessen" */ +static int ibmca_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, + const BIGNUM *q, const BIGNUM *dmp1, + const BIGNUM *dmq1, const BIGNUM *iqmp, BN_CTX *ctx) + { + + BIGNUM *argument = NULL; + BIGNUM *result = NULL; + BIGNUM *key = NULL; + + int to_return = 0; /* expect failure */ + + char *pkey=NULL; + ICA_KEY_RSA_CRT *privKey=NULL; + int inLen, outLen; + + int rc; + unsigned int offset, pSize, qSize; +/* SAB New variables */ + unsigned int keyRecordSize; + unsigned int pbytes = BN_num_bytes(p); + unsigned int qbytes = BN_num_bytes(q); + unsigned int dmp1bytes = BN_num_bytes(dmp1); + unsigned int dmq1bytes = BN_num_bytes(dmq1); + unsigned int iqmpbytes = BN_num_bytes(iqmp); + + /* Prepare the params */ + + BN_CTX_start(ctx); + argument = BN_CTX_get(ctx); + result = BN_CTX_get(ctx); + key = BN_CTX_get(ctx); + + if(!argument || !result || !key) + { + IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT,IBMCA_R_BN_CTX_FULL); + goto err; + } + + if(!bn_wexpand(argument, p->top + q->top) || + !bn_wexpand(result, p->top + q->top) || + !bn_wexpand(key, sizeof(*privKey)/BN_BYTES )) + { + IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT,IBMCA_R_BN_EXPAND_FAIL); + goto err; + } + + + privKey = (ICA_KEY_RSA_CRT *)key->d; +/* SAB Add check for total size in bytes of the parms does not exceed + the buffer space we have + do this first +*/ + keyRecordSize = pbytes+qbytes+dmp1bytes+dmq1bytes+iqmpbytes; + if ( keyRecordSize > sizeof(privKey->keyRecord )) { + IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT,IBMCA_R_OPERANDS_TO_LARGE); + goto err; + } + + if ( (qbytes + dmq1bytes) > 256 ){ + IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT,IBMCA_R_OPERANDS_TO_LARGE); + goto err; + } + + if ( pbytes + dmp1bytes > 256 ) { + IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT,IBMCA_R_OPERANDS_TO_LARGE); + goto err; + } + +/* end SAB additions */ + + memset(privKey, 0, sizeof(ICA_KEY_RSA_CRT)); + privKey->keyType = CORRECT_ENDIANNESS(CRT_KEY_TYPE); + privKey->keyLength = CORRECT_ENDIANNESS(sizeof(ICA_KEY_RSA_CRT)); + privKey->modulusBitLength = + CORRECT_ENDIANNESS(BN_num_bytes(q) * 2 * 8); + + /* + * p,dp & qInv are 1 QWORD Larger + */ + privKey->pLength = CORRECT_ENDIANNESS(BN_num_bytes(p)+8); + privKey->qLength = CORRECT_ENDIANNESS(BN_num_bytes(q)); + privKey->dpLength = CORRECT_ENDIANNESS(BN_num_bytes(dmp1)+8); + privKey->dqLength = CORRECT_ENDIANNESS(BN_num_bytes(dmq1)); + privKey->qInvLength = CORRECT_ENDIANNESS(BN_num_bytes(iqmp)+8); + + offset = (char *) privKey->keyRecord + - (char *) privKey; + + qSize = BN_num_bytes(q); + pSize = qSize + 8; /* 1 QWORD larger */ + + +/* SAB probably aittle redundant, but we'll verify that each of the + components which make up a key record sent ot the card does not exceed + the space that is allocated for it. this handles the case where even if + the total length does not exceed keyrecord zied, if the operands are funny sized +they could cause potential side affects on either the card or the result */ + + if ( (pbytes > pSize) || (dmp1bytes > pSize) || + (iqmpbytes > pSize) || ( qbytes >qSize) || + (dmq1bytes > qSize) ) { + IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_OPERANDS_TO_LARGE); + goto err; + + } + + + privKey->dpOffset = CORRECT_ENDIANNESS(offset); + + offset += pSize; + privKey->dqOffset = CORRECT_ENDIANNESS(offset); + + offset += qSize; + privKey->pOffset = CORRECT_ENDIANNESS(offset); + + offset += pSize; + privKey->qOffset = CORRECT_ENDIANNESS(offset); + + offset += qSize; + privKey->qInvOffset = CORRECT_ENDIANNESS(offset); + + pkey = (char *) privKey->keyRecord; + + +/* SAB first check that we don;t under flow the buffer */ + if ( pSize < pbytes ) { + IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_UNDERFLOW_CONDITION); + goto err; + } + + /* pkey += pSize - BN_num_bytes(p); WROING this should be dmp1) */ + pkey += pSize - BN_num_bytes(dmp1); + BN_bn2bin(dmp1, pkey); + pkey += BN_num_bytes(dmp1); /* move the pointer */ + + BN_bn2bin(dmq1, pkey); /* Copy over dmq1 */ + + pkey += qSize; /* move pointer */ + /* set up for zero padding of next field */ + pkey += pSize - BN_num_bytes(p); + + BN_bn2bin(p, pkey); + /* increment pointer by number of bytes moved */ + pkey += BN_num_bytes(p); + + BN_bn2bin(q, pkey); + pkey += qSize ; /* move the pointer */ + pkey += pSize - BN_num_bytes(iqmp); /* Adjust for padding */ + BN_bn2bin(iqmp, pkey); + + /* Prepare the argument and response */ + + /* Correct endianess is used because the fields were converted above */ + outLen = CORRECT_ENDIANNESS(privKey->qLength) * 2; + + if (outLen > 256) { + IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT,IBMCA_R_OUTLEN_TO_LARGE); + goto err; + } + + /* SAB check for underflow here on the argeument */ + if ( outLen < BN_num_bytes(a)) { + IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT,IBMCA_R_UNDERFLOW_CONDITION); + goto err; + } + + BN_bn2bin(a, (unsigned char *)argument->d + outLen - + BN_num_bytes(a)); + inLen = outLen; + + memset(result->d, 0, outLen); + + /* Perform the operation */ + + if ( (rc = p_icaRsaCrt(handle, inLen, (unsigned char *)argument->d, + privKey, &outLen, (unsigned char *)result->d)) != 0) + { + printf("rc = %d\n", rc); + IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT,IBMCA_R_REQUEST_FAILED); + goto err; + } + + /* Convert the response */ + + BN_bin2bn((unsigned char *)result->d, outLen, r); + to_return = 1; + + err: + BN_CTX_end(ctx); + return to_return; + + } + +#ifndef OPENSSL_NO_DSA +/* This code was liberated and adapted from the commented-out code in + * dsa_ossl.c. Because of the unoptimised form of the Ibmca acceleration + * (it doesn't have a CRT form for RSA), this function means that an + * Ibmca system running with a DSA server certificate can handshake + * around 5 or 6 times faster/more than an equivalent system running with + * RSA. Just check out the "signs" statistics from the RSA and DSA parts + * of "openssl speed -engine ibmca dsa1024 rsa1024". */ +static int ibmca_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1, + BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m, + BN_CTX *ctx, BN_MONT_CTX *in_mont) + { + BIGNUM t; + int to_return = 0; + + BN_init(&t); + /* let rr = a1 ^ p1 mod m */ + if (!ibmca_mod_exp(rr,a1,p1,m,ctx)) goto end; + /* let t = a2 ^ p2 mod m */ + if (!ibmca_mod_exp(&t,a2,p2,m,ctx)) goto end; + /* let rr = rr * t mod m */ + if (!BN_mod_mul(rr,rr,&t,m,ctx)) goto end; + to_return = 1; + end: + BN_free(&t); + return to_return; + } + + +static int ibmca_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a, + const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx, + BN_MONT_CTX *m_ctx) + { + return ibmca_mod_exp(r, a, p, m, ctx); + } +#endif + +/* This function is aliased to mod_exp (with the mont stuff dropped). */ +static int ibmca_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, + const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx) + { + return ibmca_mod_exp(r, a, p, m, ctx); + } + +#ifndef OPENSSL_NO_DH +/* This function is aliased to mod_exp (with the dh and mont dropped). */ +static int ibmca_mod_exp_dh(DH const *dh, BIGNUM *r, + const BIGNUM *a, const BIGNUM *p, + const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx) + { + return ibmca_mod_exp(r, a, p, m, ctx); + } +#endif + +/* Random bytes are good */ +static int ibmca_rand_bytes(unsigned char *buf, int num) + { + int to_return = 0; /* assume failure */ + unsigned int ret; + + + if(handle == 0) + { + IBMCAerr(IBMCA_F_IBMCA_RAND_BYTES,IBMCA_R_NOT_INITIALISED); + goto err; + } + + ret = p_icaRandomNumberGenerate(handle, num, buf); + if (ret < 0) + { + IBMCAerr(IBMCA_F_IBMCA_RAND_BYTES,IBMCA_R_REQUEST_FAILED); + goto err; + } + to_return = 1; + err: + return to_return; + } + +static int ibmca_rand_status(void) + { + return 1; + } + +/* This stuff is needed if this ENGINE is being compiled into a self-contained + * shared-library. */ +#ifdef ENGINE_DYNAMIC_SUPPORT +static int bind_fn(ENGINE *e, const char *id) + { + if(id && (strcmp(id, engine_ibmca_id) != 0)) /* WJH XXX */ + return 0; + if(!bind_helper(e)) + return 0; + return 1; + } +IMPLEMENT_DYNAMIC_CHECK_FN() +IMPLEMENT_DYNAMIC_BIND_FN(bind_fn) +#endif /* ENGINE_DYNAMIC_SUPPORT */ + + #endif /* !OPENSSL_NO_HW_IBMCA */ #endif /* !OPENSSL_NO_HW */