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- /* crypto/engine/hw_ibmca.c */
- /*
- * Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL project
- * 2000.
- */
- /* ====================================================================
- * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. All advertising materials mentioning features or use of this
- * software must display the following acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * licensing@OpenSSL.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- * nor may "OpenSSL" appear in their names without prior written
- * permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com). This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
- *
- */
- /* (C) COPYRIGHT International Business Machines Corp. 2001 */
- #include <stdio.h>
- #include <openssl/crypto.h>
- #include <openssl/dso.h>
- #include <openssl/engine.h>
- #ifndef OPENSSL_NO_HW
- # ifndef OPENSSL_NO_HW_IBMCA
- # ifdef FLAT_INC
- # include "ica_openssl_api.h"
- # else
- # include "vendor_defns/ica_openssl_api.h"
- # endif
- # define IBMCA_LIB_NAME "ibmca engine"
- # include "hw_ibmca_err.c"
- static int ibmca_destroy(ENGINE *e);
- static int ibmca_init(ENGINE *e);
- static int ibmca_finish(ENGINE *e);
- static int ibmca_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f) ());
- static const char *IBMCA_F1 = "icaOpenAdapter";
- static const char *IBMCA_F2 = "icaCloseAdapter";
- static const char *IBMCA_F3 = "icaRsaModExpo";
- static const char *IBMCA_F4 = "icaRandomNumberGenerate";
- static const char *IBMCA_F5 = "icaRsaCrt";
- ICA_ADAPTER_HANDLE handle = 0;
- /* BIGNUM stuff */
- static int ibmca_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
- const BIGNUM *m, BN_CTX *ctx);
- static int ibmca_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
- const BIGNUM *q, const BIGNUM *dmp1,
- const BIGNUM *dmq1, const BIGNUM *iqmp,
- BN_CTX *ctx);
- # ifndef OPENSSL_NO_RSA
- /* RSA stuff */
- static int ibmca_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa);
- # endif
- /* This function is aliased to mod_exp (with the mont stuff dropped). */
- static int ibmca_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
- const BIGNUM *m, BN_CTX *ctx,
- BN_MONT_CTX *m_ctx);
- # ifndef OPENSSL_NO_DSA
- /* DSA stuff */
- static int ibmca_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1,
- BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m,
- BN_CTX *ctx, BN_MONT_CTX *in_mont);
- static int ibmca_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a,
- const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
- BN_MONT_CTX *m_ctx);
- # endif
- # ifndef OPENSSL_NO_DH
- /* DH stuff */
- /* This function is alised to mod_exp (with the DH and mont dropped). */
- static int ibmca_mod_exp_dh(const DH *dh, BIGNUM *r,
- const BIGNUM *a, const BIGNUM *p,
- const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
- # endif
- /* RAND stuff */
- static int ibmca_rand_bytes(unsigned char *buf, int num);
- static int ibmca_rand_status(void);
- /* WJH - check for more commands, like in nuron */
- /* The definitions for control commands specific to this engine */
- # define IBMCA_CMD_SO_PATH ENGINE_CMD_BASE
- static const ENGINE_CMD_DEFN ibmca_cmd_defns[] = {
- {IBMCA_CMD_SO_PATH,
- "SO_PATH",
- "Specifies the path to the 'atasi' shared library",
- ENGINE_CMD_FLAG_STRING},
- {0, NULL, NULL, 0}
- };
- # ifndef OPENSSL_NO_RSA
- /* Our internal RSA_METHOD that we provide pointers to */
- static RSA_METHOD ibmca_rsa = {
- "Ibmca RSA method",
- NULL,
- NULL,
- NULL,
- NULL,
- ibmca_rsa_mod_exp,
- ibmca_mod_exp_mont,
- NULL,
- NULL,
- 0,
- NULL,
- NULL,
- NULL
- };
- # endif
- # ifndef OPENSSL_NO_DSA
- /* Our internal DSA_METHOD that we provide pointers to */
- static DSA_METHOD ibmca_dsa = {
- "Ibmca DSA method",
- NULL, /* dsa_do_sign */
- NULL, /* dsa_sign_setup */
- NULL, /* dsa_do_verify */
- ibmca_dsa_mod_exp, /* dsa_mod_exp */
- ibmca_mod_exp_dsa, /* bn_mod_exp */
- NULL, /* init */
- NULL, /* finish */
- 0, /* flags */
- NULL /* app_data */
- };
- # endif
- # ifndef OPENSSL_NO_DH
- /* Our internal DH_METHOD that we provide pointers to */
- static DH_METHOD ibmca_dh = {
- "Ibmca DH method",
- NULL,
- NULL,
- ibmca_mod_exp_dh,
- NULL,
- NULL,
- 0,
- NULL
- };
- # endif
- static RAND_METHOD ibmca_rand = {
- /* "IBMCA RAND method", */
- NULL,
- ibmca_rand_bytes,
- NULL,
- NULL,
- ibmca_rand_bytes,
- ibmca_rand_status,
- };
- /* Constants used when creating the ENGINE */
- static const char *engine_ibmca_id = "ibmca";
- static const char *engine_ibmca_name = "Ibmca hardware engine support";
- /*
- * This internal function is used by ENGINE_ibmca() and possibly by the
- * "dynamic" ENGINE support too
- */
- static int bind_helper(ENGINE *e)
- {
- # ifndef OPENSSL_NO_RSA
- const RSA_METHOD *meth1;
- # endif
- # ifndef OPENSSL_NO_DSA
- const DSA_METHOD *meth2;
- # endif
- # ifndef OPENSSL_NO_DH
- const DH_METHOD *meth3;
- # endif
- if (!ENGINE_set_id(e, engine_ibmca_id) ||
- !ENGINE_set_name(e, engine_ibmca_name) ||
- # ifndef OPENSSL_NO_RSA
- !ENGINE_set_RSA(e, &ibmca_rsa) ||
- # endif
- # ifndef OPENSSL_NO_DSA
- !ENGINE_set_DSA(e, &ibmca_dsa) ||
- # endif
- # ifndef OPENSSL_NO_DH
- !ENGINE_set_DH(e, &ibmca_dh) ||
- # endif
- !ENGINE_set_RAND(e, &ibmca_rand) ||
- !ENGINE_set_destroy_function(e, ibmca_destroy) ||
- !ENGINE_set_init_function(e, ibmca_init) ||
- !ENGINE_set_finish_function(e, ibmca_finish) ||
- !ENGINE_set_ctrl_function(e, ibmca_ctrl) ||
- !ENGINE_set_cmd_defns(e, ibmca_cmd_defns))
- return 0;
- # ifndef OPENSSL_NO_RSA
- /*
- * We know that the "PKCS1_OpenSSL()" 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_OpenSSL();
- 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)) == NULL
- || (p2 = DSO_bind_func(ibmca_dso, IBMCA_F2)) == NULL
- || (p3 = DSO_bind_func(ibmca_dso, IBMCA_F3)) == NULL
- || (p4 = DSO_bind_func(ibmca_dso, IBMCA_F4)) == NULL
- || (p5 = DSO_bind_func(ibmca_dso, IBMCA_F5)) == NULL) {
- 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:
- DSO_free(ibmca_dso);
- p_icaOpenAdapter = NULL;
- p_icaCloseAdapter = NULL;
- p_icaRsaModExpo = NULL;
- p_icaRandomNumberGenerate = NULL;
- return 0;
- }
- static int ibmca_finish(ENGINE *e)
- {
- if (ibmca_dso == NULL) {
- IBMCAerr(IBMCA_F_IBMCA_FINISH, IBMCA_R_NOT_LOADED);
- return 0;
- }
- release_context(handle);
- if (!DSO_free(ibmca_dso)) {
- IBMCAerr(IBMCA_F_IBMCA_FINISH, IBMCA_R_DSO_FAILURE);
- return 0;
- }
- ibmca_dso = NULL;
- return 1;
- }
- static int ibmca_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f) ())
- {
- int initialised = ((ibmca_dso == NULL) ? 0 : 1);
- switch (cmd) {
- case IBMCA_CMD_SO_PATH:
- if (p == NULL) {
- IBMCAerr(IBMCA_F_IBMCA_CTRL, ERR_R_PASSED_NULL_PARAMETER);
- return 0;
- }
- if (initialised) {
- IBMCAerr(IBMCA_F_IBMCA_CTRL, IBMCA_R_ALREADY_LOADED);
- return 0;
- }
- IBMCA_LIBNAME = (const char *)p;
- return 1;
- default:
- break;
- }
- IBMCAerr(IBMCA_F_IBMCA_CTRL, IBMCA_R_CTRL_COMMAND_NOT_IMPLEMENTED);
- return 0;
- }
- static int ibmca_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
- const BIGNUM *m, BN_CTX *ctx)
- {
- /*
- * I need somewhere to store temporary serialised values for use with the
- * Ibmca API calls. A neat cheat - I'll use BIGNUMs from the BN_CTX but
- * access their arrays directly as byte arrays <grin>. This way I don't
- * have to clean anything up.
- */
- BIGNUM *argument = NULL;
- BIGNUM *result = NULL;
- BIGNUM *key = NULL;
- int to_return;
- int inLen, outLen, tmpLen;
- ICA_KEY_RSA_MODEXPO *publKey = NULL;
- unsigned int rc;
- to_return = 0; /* expect failure */
- if (!ibmca_dso) {
- IBMCAerr(IBMCA_F_IBMCA_MOD_EXP, IBMCA_R_NOT_LOADED);
- goto err;
- }
- /* Prepare the params */
- BN_CTX_start(ctx);
- argument = BN_CTX_get(ctx);
- result = BN_CTX_get(ctx);
- key = BN_CTX_get(ctx);
- if (!argument || !result || !key) {
- IBMCAerr(IBMCA_F_IBMCA_MOD_EXP, IBMCA_R_BN_CTX_FULL);
- goto err;
- }
- if (!bn_wexpand(argument, m->top) || !bn_wexpand(result, m->top) ||
- !bn_wexpand(key, sizeof(*publKey) / BN_BYTES)) {
- IBMCAerr(IBMCA_F_IBMCA_MOD_EXP, IBMCA_R_BN_EXPAND_FAIL);
- goto err;
- }
- publKey = (ICA_KEY_RSA_MODEXPO *)key->d;
- if (publKey == NULL) {
- goto err;
- }
- memset(publKey, 0, sizeof(*publKey));
- 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:
- 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(*privKey));
- 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 */
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