diff options
Diffstat (limited to 'openssl/demos/engines/ibmca/hw_ibmca.c')
| -rw-r--r-- | openssl/demos/engines/ibmca/hw_ibmca.c | 920 |
1 files changed, 920 insertions, 0 deletions
diff --git a/openssl/demos/engines/ibmca/hw_ibmca.c b/openssl/demos/engines/ibmca/hw_ibmca.c new file mode 100644 index 000000000..0c2c39b8a --- /dev/null +++ b/openssl/demos/engines/ibmca/hw_ibmca.c @@ -0,0 +1,920 @@ +/* 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_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 <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(ICA_KEY_RSA_MODEXPO));
+
+ publKey->keyType = CORRECT_ENDIANNESS(ME_KEY_TYPE);
+ publKey->keyLength = CORRECT_ENDIANNESS(sizeof(ICA_KEY_RSA_MODEXPO));
+ publKey->expOffset = (char *) publKey->keyRecord - (char *) publKey;
+
+ /* A quirk of the card: the exponent length has to be the same
+ as the modulus (key) length */
+
+ outLen = BN_num_bytes(m);
+
+/* check for modulus length SAB*/
+ if (outLen > 256 ) {
+ IBMCAerr(IBMCA_F_IBMCA_MOD_EXP,IBMCA_R_MEXP_LENGTH_TO_LARGE);
+ goto err;
+ }
+/* check for modulus length SAB*/
+
+
+ publKey->expLength = publKey->nLength = outLen;
+/* SAB Check for underflow condition
+ the size of the exponent is less than the size of the parameter
+ then we have a big problem and will underflow the keyRecord
+ buffer. Bad stuff could happen then
+*/
+if (outLen < BN_num_bytes(p)){
+ IBMCAerr(IBMCA_F_IBMCA_MOD_EXP,IBMCA_R_UNDERFLOW_KEYRECORD);
+ goto err;
+}
+/* SAB End check for underflow */
+
+
+ BN_bn2bin(p, &publKey->keyRecord[publKey->expLength -
+ BN_num_bytes(p)]);
+ BN_bn2bin(m, &publKey->keyRecord[publKey->expLength]);
+
+
+
+ publKey->modulusBitLength = CORRECT_ENDIANNESS(publKey->nLength * 8);
+ publKey->nOffset = CORRECT_ENDIANNESS(publKey->expOffset +
+ publKey->expLength);
+
+ publKey->expOffset = CORRECT_ENDIANNESS((char *) publKey->keyRecord -
+ (char *) publKey);
+
+ tmpLen = outLen;
+ publKey->expLength = publKey->nLength = CORRECT_ENDIANNESS(tmpLen);
+
+ /* Prepare the argument */
+
+ memset(argument->d, 0, outLen);
+ BN_bn2bin(a, (unsigned char *)argument->d + outLen -
+ BN_num_bytes(a));
+
+ inLen = outLen;
+
+ /* Perform the operation */
+
+ if( (rc = p_icaRsaModExpo(handle, inLen,(unsigned char *)argument->d,
+ publKey, &outLen, (unsigned char *)result->d))
+ !=0 )
+
+ {
+ printf("rc = %d\n", rc);
+ IBMCAerr(IBMCA_F_IBMCA_MOD_EXP,IBMCA_R_REQUEST_FAILED);
+ goto err;
+ }
+
+
+ /* Convert the response */
+ BN_bin2bn((unsigned char *)result->d, outLen, r);
+ to_return = 1;
+ err:
+ BN_CTX_end(ctx);
+ return to_return;
+ }
+
+#ifndef OPENSSL_NO_RSA
+static int ibmca_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa)
+ {
+ BN_CTX *ctx;
+ int to_return = 0;
+
+ if((ctx = BN_CTX_new()) == NULL)
+ goto err;
+ if(!rsa->p || !rsa->q || !rsa->dmp1 || !rsa->dmq1 || !rsa->iqmp)
+ {
+ if(!rsa->d || !rsa->n)
+ {
+ IBMCAerr(IBMCA_F_IBMCA_RSA_MOD_EXP,
+ IBMCA_R_MISSING_KEY_COMPONENTS);
+ goto err;
+ }
+ to_return = ibmca_mod_exp(r0, I, rsa->d, rsa->n, ctx);
+ }
+ else
+ {
+ to_return = ibmca_mod_exp_crt(r0, I, rsa->p, rsa->q, rsa->dmp1,
+ rsa->dmq1, rsa->iqmp, ctx);
+ }
+ err:
+ if(ctx)
+ BN_CTX_free(ctx);
+ return to_return;
+ }
+#endif
+
+/* Ein kleines chinesisches "Restessen" */
+static int ibmca_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
+ const BIGNUM *q, const BIGNUM *dmp1,
+ const BIGNUM *dmq1, const BIGNUM *iqmp, BN_CTX *ctx)
+ {
+
+ BIGNUM *argument = NULL;
+ BIGNUM *result = NULL;
+ BIGNUM *key = NULL;
+
+ int to_return = 0; /* expect failure */
+
+ char *pkey=NULL;
+ ICA_KEY_RSA_CRT *privKey=NULL;
+ int inLen, outLen;
+
+ int rc;
+ unsigned int offset, pSize, qSize;
+/* SAB New variables */
+ unsigned int keyRecordSize;
+ unsigned int pbytes = BN_num_bytes(p);
+ unsigned int qbytes = BN_num_bytes(q);
+ unsigned int dmp1bytes = BN_num_bytes(dmp1);
+ unsigned int dmq1bytes = BN_num_bytes(dmq1);
+ unsigned int iqmpbytes = BN_num_bytes(iqmp);
+
+ /* Prepare the params */
+
+ BN_CTX_start(ctx);
+ argument = BN_CTX_get(ctx);
+ result = BN_CTX_get(ctx);
+ key = BN_CTX_get(ctx);
+
+ if(!argument || !result || !key)
+ {
+ IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT,IBMCA_R_BN_CTX_FULL);
+ goto err;
+ }
+
+ if(!bn_wexpand(argument, p->top + q->top) ||
+ !bn_wexpand(result, p->top + q->top) ||
+ !bn_wexpand(key, sizeof(*privKey)/BN_BYTES ))
+ {
+ IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT,IBMCA_R_BN_EXPAND_FAIL);
+ goto err;
+ }
+
+
+ privKey = (ICA_KEY_RSA_CRT *)key->d;
+/* SAB Add check for total size in bytes of the parms does not exceed
+ the buffer space we have
+ do this first
+*/
+ keyRecordSize = pbytes+qbytes+dmp1bytes+dmq1bytes+iqmpbytes;
+ if ( keyRecordSize > sizeof(privKey->keyRecord )) {
+ IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT,IBMCA_R_OPERANDS_TO_LARGE);
+ goto err;
+ }
+
+ if ( (qbytes + dmq1bytes) > 256 ){
+ IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT,IBMCA_R_OPERANDS_TO_LARGE);
+ goto err;
+ }
+
+ if ( pbytes + dmp1bytes > 256 ) {
+ IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT,IBMCA_R_OPERANDS_TO_LARGE);
+ goto err;
+ }
+
+/* end SAB additions */
+
+ memset(privKey, 0, sizeof(ICA_KEY_RSA_CRT));
+ privKey->keyType = CORRECT_ENDIANNESS(CRT_KEY_TYPE);
+ privKey->keyLength = CORRECT_ENDIANNESS(sizeof(ICA_KEY_RSA_CRT));
+ privKey->modulusBitLength =
+ CORRECT_ENDIANNESS(BN_num_bytes(q) * 2 * 8);
+
+ /*
+ * p,dp & qInv are 1 QWORD Larger
+ */
+ privKey->pLength = CORRECT_ENDIANNESS(BN_num_bytes(p)+8);
+ privKey->qLength = CORRECT_ENDIANNESS(BN_num_bytes(q));
+ privKey->dpLength = CORRECT_ENDIANNESS(BN_num_bytes(dmp1)+8);
+ privKey->dqLength = CORRECT_ENDIANNESS(BN_num_bytes(dmq1));
+ privKey->qInvLength = CORRECT_ENDIANNESS(BN_num_bytes(iqmp)+8);
+
+ offset = (char *) privKey->keyRecord
+ - (char *) privKey;
+
+ qSize = BN_num_bytes(q);
+ pSize = qSize + 8; /* 1 QWORD larger */
+
+
+/* SAB probably aittle redundant, but we'll verify that each of the
+ components which make up a key record sent ot the card does not exceed
+ the space that is allocated for it. this handles the case where even if
+ the total length does not exceed keyrecord zied, if the operands are funny sized
+they could cause potential side affects on either the card or the result */
+
+ if ( (pbytes > pSize) || (dmp1bytes > pSize) ||
+ (iqmpbytes > pSize) || ( qbytes >qSize) ||
+ (dmq1bytes > qSize) ) {
+ IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_OPERANDS_TO_LARGE);
+ goto err;
+
+ }
+
+
+ privKey->dpOffset = CORRECT_ENDIANNESS(offset);
+
+ offset += pSize;
+ privKey->dqOffset = CORRECT_ENDIANNESS(offset);
+
+ offset += qSize;
+ privKey->pOffset = CORRECT_ENDIANNESS(offset);
+
+ offset += pSize;
+ privKey->qOffset = CORRECT_ENDIANNESS(offset);
+
+ offset += qSize;
+ privKey->qInvOffset = CORRECT_ENDIANNESS(offset);
+
+ pkey = (char *) privKey->keyRecord;
+
+
+/* SAB first check that we don;t under flow the buffer */
+ if ( pSize < pbytes ) {
+ IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_UNDERFLOW_CONDITION);
+ goto err;
+ }
+
+ /* pkey += pSize - BN_num_bytes(p); WROING this should be dmp1) */
+ pkey += pSize - BN_num_bytes(dmp1);
+ BN_bn2bin(dmp1, pkey);
+ pkey += BN_num_bytes(dmp1); /* move the pointer */
+
+ BN_bn2bin(dmq1, pkey); /* Copy over dmq1 */
+
+ pkey += qSize; /* move pointer */
+ pkey += pSize - BN_num_bytes(p); /* set up for zero padding of next field */
+
+ BN_bn2bin(p, pkey);
+ pkey += BN_num_bytes(p); /* increment pointer by number of bytes moved */
+
+ BN_bn2bin(q, pkey);
+ pkey += qSize ; /* move the pointer */
+ pkey += pSize - BN_num_bytes(iqmp); /* Adjust for padding */
+ BN_bn2bin(iqmp, pkey);
+
+ /* Prepare the argument and response */
+
+ outLen = CORRECT_ENDIANNESS(privKey->qLength) * 2; /* Correct endianess is used
+ because the fields were converted above */
+
+ if (outLen > 256) {
+ IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT,IBMCA_R_OUTLEN_TO_LARGE);
+ goto err;
+ }
+
+ /* SAB check for underflow here on the argeument */
+ if ( outLen < BN_num_bytes(a)) {
+ IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT,IBMCA_R_UNDERFLOW_CONDITION);
+ goto err;
+ }
+
+ BN_bn2bin(a, (unsigned char *)argument->d + outLen -
+ BN_num_bytes(a));
+ inLen = outLen;
+
+ memset(result->d, 0, outLen);
+
+ /* Perform the operation */
+
+ if ( (rc = p_icaRsaCrt(handle, inLen, (unsigned char *)argument->d,
+ privKey, &outLen, (unsigned char *)result->d)) != 0)
+ {
+ printf("rc = %d\n", rc);
+ IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT,IBMCA_R_REQUEST_FAILED);
+ goto err;
+ }
+
+ /* Convert the response */
+
+ BN_bin2bn((unsigned char *)result->d, outLen, r);
+ to_return = 1;
+
+ err:
+ BN_CTX_end(ctx);
+ return to_return;
+
+ }
+
+#ifndef OPENSSL_NO_DSA
+/* This code was liberated and adapted from the commented-out code in
+ * dsa_ossl.c. Because of the unoptimised form of the Ibmca acceleration
+ * (it doesn't have a CRT form for RSA), this function means that an
+ * Ibmca system running with a DSA server certificate can handshake
+ * around 5 or 6 times faster/more than an equivalent system running with
+ * RSA. Just check out the "signs" statistics from the RSA and DSA parts
+ * of "openssl speed -engine ibmca dsa1024 rsa1024". */
+static int ibmca_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1,
+ BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m,
+ BN_CTX *ctx, BN_MONT_CTX *in_mont)
+ {
+ BIGNUM t;
+ int to_return = 0;
+
+ BN_init(&t);
+ /* let rr = a1 ^ p1 mod m */
+ if (!ibmca_mod_exp(rr,a1,p1,m,ctx)) goto end;
+ /* let t = a2 ^ p2 mod m */
+ if (!ibmca_mod_exp(&t,a2,p2,m,ctx)) goto end;
+ /* let rr = rr * t mod m */
+ if (!BN_mod_mul(rr,rr,&t,m,ctx)) goto end;
+ to_return = 1;
+ end:
+ BN_free(&t);
+ return to_return;
+ }
+
+
+static int ibmca_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a,
+ const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
+ BN_MONT_CTX *m_ctx)
+ {
+ return ibmca_mod_exp(r, a, p, m, ctx);
+ }
+#endif
+
+/* This function is aliased to mod_exp (with the mont stuff dropped). */
+static int ibmca_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
+ const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
+ {
+ return ibmca_mod_exp(r, a, p, m, ctx);
+ }
+
+#ifndef OPENSSL_NO_DH
+/* This function is aliased to mod_exp (with the dh and mont dropped). */
+static int ibmca_mod_exp_dh(DH const *dh, BIGNUM *r,
+ const BIGNUM *a, const BIGNUM *p,
+ const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
+ {
+ return ibmca_mod_exp(r, a, p, m, ctx);
+ }
+#endif
+
+/* Random bytes are good */
+static int ibmca_rand_bytes(unsigned char *buf, int num)
+ {
+ int to_return = 0; /* assume failure */
+ unsigned int ret;
+
+
+ if(handle == 0)
+ {
+ IBMCAerr(IBMCA_F_IBMCA_RAND_BYTES,IBMCA_R_NOT_INITIALISED);
+ goto err;
+ }
+
+ ret = p_icaRandomNumberGenerate(handle, num, buf);
+ if (ret < 0)
+ {
+ IBMCAerr(IBMCA_F_IBMCA_RAND_BYTES,IBMCA_R_REQUEST_FAILED);
+ goto err;
+ }
+ to_return = 1;
+ err:
+ return to_return;
+ }
+
+static int ibmca_rand_status(void)
+ {
+ return 1;
+ }
+
+/* This stuff is needed if this ENGINE is being compiled into a self-contained
+ * shared-library. */
+#ifdef ENGINE_DYNAMIC_SUPPORT
+static int bind_fn(ENGINE *e, const char *id)
+ {
+ if(id && (strcmp(id, engine_ibmca_id) != 0)) /* WJH XXX */
+ return 0;
+ if(!bind_helper(e))
+ return 0;
+ return 1;
+ }
+IMPLEMENT_DYNAMIC_CHECK_FN()
+IMPLEMENT_DYNAMIC_BIND_FN(bind_fn)
+#endif /* ENGINE_DYNAMIC_SUPPORT */
+
+
+#endif /* !OPENSSL_NO_HW_IBMCA */
+#endif /* !OPENSSL_NO_HW */
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