--- /dev/null
+/* crypto/engine/hw_cswift.c */
+/* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
+ * project 2000.
+ */
+/* ====================================================================
+ * Copyright (c) 1999-2001 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).
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <openssl/crypto.h>
+#include <openssl/buffer.h>
+#include <openssl/dso.h>
+#include <openssl/engine.h>
+#ifndef OPENSSL_NO_RSA
+#include <openssl/rsa.h>
+#endif
+#ifndef OPENSSL_NO_DSA
+#include <openssl/dsa.h>
+#endif
+#ifndef OPENSSL_NO_DH
+#include <openssl/dh.h>
+#endif
+#include <openssl/rand.h>
+#include <openssl/bn.h>
+
+#ifndef OPENSSL_NO_HW
+#ifndef OPENSSL_NO_HW_CSWIFT
+
+/* Attribution notice: Rainbow have generously allowed me to reproduce
+ * the necessary definitions here from their API. This means the support
+ * can build independently of whether application builders have the
+ * API or hardware. This will allow developers to easily produce software
+ * that has latent hardware support for any users that have accelerators
+ * installed, without the developers themselves needing anything extra.
+ *
+ * I have only clipped the parts from the CryptoSwift header files that
+ * are (or seem) relevant to the CryptoSwift support code. This is
+ * simply to keep the file sizes reasonable.
+ * [Geoff]
+ */
+#ifdef FLAT_INC
+#include "cswift.h"
+#else
+#include "vendor_defns/cswift.h"
+#endif
+
+#define CSWIFT_LIB_NAME "cswift engine"
+#include "e_cswift_err.c"
+
+#define DECIMAL_SIZE(type) ((sizeof(type)*8+2)/3+1)
+
+static int cswift_destroy(ENGINE *e);
+static int cswift_init(ENGINE *e);
+static int cswift_finish(ENGINE *e);
+static int cswift_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)(void));
+#ifndef OPENSSL_NO_RSA
+static int cswift_bn_32copy(SW_LARGENUMBER * out, const BIGNUM * in);
+#endif
+
+/* BIGNUM stuff */
+static int cswift_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
+ const BIGNUM *m, BN_CTX *ctx);
+#ifndef OPENSSL_NO_RSA
+static int cswift_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);
+#endif
+
+#ifndef OPENSSL_NO_RSA
+/* RSA stuff */
+static int cswift_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx);
+/* This function is aliased to mod_exp (with the mont stuff dropped). */
+static int cswift_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
+ const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
+#endif
+
+#ifndef OPENSSL_NO_DSA
+/* DSA stuff */
+static DSA_SIG *cswift_dsa_sign(const unsigned char *dgst, int dlen, DSA *dsa);
+static int cswift_dsa_verify(const unsigned char *dgst, int dgst_len,
+ DSA_SIG *sig, DSA *dsa);
+#endif
+
+#ifndef OPENSSL_NO_DH
+/* DH stuff */
+/* This function is alised to mod_exp (with the DH and mont dropped). */
+static int cswift_mod_exp_dh(const DH *dh, BIGNUM *r,
+ const BIGNUM *a, const BIGNUM *p,
+ const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
+#endif
+
+/* RAND stuff */
+static int cswift_rand_bytes(unsigned char *buf, int num);
+static int cswift_rand_status(void);
+
+/* The definitions for control commands specific to this engine */
+#define CSWIFT_CMD_SO_PATH ENGINE_CMD_BASE
+static const ENGINE_CMD_DEFN cswift_cmd_defns[] = {
+ {CSWIFT_CMD_SO_PATH,
+ "SO_PATH",
+ "Specifies the path to the 'cswift' 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 cswift_rsa =
+ {
+ "CryptoSwift RSA method",
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ cswift_rsa_mod_exp,
+ cswift_mod_exp_mont,
+ NULL,
+ NULL,
+ 0,
+ NULL,
+ NULL,
+ NULL,
+ NULL
+ };
+#endif
+
+#ifndef OPENSSL_NO_DSA
+/* Our internal DSA_METHOD that we provide pointers to */
+static DSA_METHOD cswift_dsa =
+ {
+ "CryptoSwift DSA method",
+ cswift_dsa_sign,
+ NULL, /* dsa_sign_setup */
+ cswift_dsa_verify,
+ NULL, /* dsa_mod_exp */
+ NULL, /* bn_mod_exp */
+ NULL, /* init */
+ NULL, /* finish */
+ 0, /* flags */
+ NULL, /* app_data */
+ NULL, /* dsa_paramgen */
+ NULL /* dsa_keygen */
+ };
+#endif
+
+#ifndef OPENSSL_NO_DH
+/* Our internal DH_METHOD that we provide pointers to */
+static DH_METHOD cswift_dh =
+ {
+ "CryptoSwift DH method",
+ NULL,
+ NULL,
+ cswift_mod_exp_dh,
+ NULL,
+ NULL,
+ 0,
+ NULL,
+ NULL
+ };
+#endif
+
+static RAND_METHOD cswift_random =
+ {
+ /* "CryptoSwift RAND method", */
+ NULL,
+ cswift_rand_bytes,
+ NULL,
+ NULL,
+ cswift_rand_bytes,
+ cswift_rand_status,
+ };
+
+
+/* Constants used when creating the ENGINE */
+static const char *engine_cswift_id = "cswift";
+static const char *engine_cswift_name = "CryptoSwift hardware engine support";
+
+/* This internal function is used by ENGINE_cswift() 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_DH
+ const DH_METHOD *meth2;
+#endif
+ if(!ENGINE_set_id(e, engine_cswift_id) ||
+ !ENGINE_set_name(e, engine_cswift_name) ||
+#ifndef OPENSSL_NO_RSA
+ !ENGINE_set_RSA(e, &cswift_rsa) ||
+#endif
+#ifndef OPENSSL_NO_DSA
+ !ENGINE_set_DSA(e, &cswift_dsa) ||
+#endif
+#ifndef OPENSSL_NO_DH
+ !ENGINE_set_DH(e, &cswift_dh) ||
+#endif
+ !ENGINE_set_RAND(e, &cswift_random) ||
+ !ENGINE_set_destroy_function(e, cswift_destroy) ||
+ !ENGINE_set_init_function(e, cswift_init) ||
+ !ENGINE_set_finish_function(e, cswift_finish) ||
+ !ENGINE_set_ctrl_function(e, cswift_ctrl) ||
+ !ENGINE_set_cmd_defns(e, cswift_cmd_defns))
+ return 0;
+
+#ifndef OPENSSL_NO_RSA
+ /* We know that the "PKCS1_SSLeay()" functions hook properly
+ * to the cswift-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();
+ cswift_rsa.rsa_pub_enc = meth1->rsa_pub_enc;
+ cswift_rsa.rsa_pub_dec = meth1->rsa_pub_dec;
+ cswift_rsa.rsa_priv_enc = meth1->rsa_priv_enc;
+ cswift_rsa.rsa_priv_dec = meth1->rsa_priv_dec;
+#endif
+
+#ifndef OPENSSL_NO_DH
+ /* Much the same for Diffie-Hellman */
+ meth2 = DH_OpenSSL();
+ cswift_dh.generate_key = meth2->generate_key;
+ cswift_dh.compute_key = meth2->compute_key;
+#endif
+
+ /* Ensure the cswift error handling is set up */
+ ERR_load_CSWIFT_strings();
+ return 1;
+ }
+
+#ifdef OPENSSL_NO_DYNAMIC_ENGINE
+static ENGINE *engine_cswift(void)
+ {
+ ENGINE *ret = ENGINE_new();
+ if(!ret)
+ return NULL;
+ if(!bind_helper(ret))
+ {
+ ENGINE_free(ret);
+ return NULL;
+ }
+ return ret;
+ }
+
+void ENGINE_load_cswift(void)
+ {
+ /* Copied from eng_[openssl|dyn].c */
+ ENGINE *toadd = engine_cswift();
+ if(!toadd) return;
+ ENGINE_add(toadd);
+ ENGINE_free(toadd);
+ ERR_clear_error();
+ }
+#endif
+
+/* This is a process-global DSO handle used for loading and unloading
+ * the CryptoSwift 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 *cswift_dso = NULL;
+
+/* These are the function pointers that are (un)set when the library has
+ * successfully (un)loaded. */
+t_swAcquireAccContext *p_CSwift_AcquireAccContext = NULL;
+t_swAttachKeyParam *p_CSwift_AttachKeyParam = NULL;
+t_swSimpleRequest *p_CSwift_SimpleRequest = NULL;
+t_swReleaseAccContext *p_CSwift_ReleaseAccContext = NULL;
+
+/* Used in the DSO operations. */
+static const char *CSWIFT_LIBNAME = NULL;
+static const char *get_CSWIFT_LIBNAME(void)
+ {
+ if(CSWIFT_LIBNAME)
+ return CSWIFT_LIBNAME;
+ return "swift";
+ }
+static void free_CSWIFT_LIBNAME(void)
+ {
+ if(CSWIFT_LIBNAME)
+ OPENSSL_free((void*)CSWIFT_LIBNAME);
+ CSWIFT_LIBNAME = NULL;
+ }
+static long set_CSWIFT_LIBNAME(const char *name)
+ {
+ free_CSWIFT_LIBNAME();
+ return (((CSWIFT_LIBNAME = BUF_strdup(name)) != NULL) ? 1 : 0);
+ }
+static const char *CSWIFT_F1 = "swAcquireAccContext";
+static const char *CSWIFT_F2 = "swAttachKeyParam";
+static const char *CSWIFT_F3 = "swSimpleRequest";
+static const char *CSWIFT_F4 = "swReleaseAccContext";
+
+
+/* CryptoSwift library functions and mechanics - these are used by the
+ * higher-level functions further down. NB: As and where there's no
+ * error checking, take a look lower down where these functions are
+ * called, the checking and error handling is probably down there. */
+
+/* utility function to obtain a context */
+static int get_context(SW_CONTEXT_HANDLE *hac)
+ {
+ SW_STATUS status;
+
+ status = p_CSwift_AcquireAccContext(hac);
+ if(status != SW_OK)
+ return 0;
+ return 1;
+ }
+
+/* similarly to release one. */
+static void release_context(SW_CONTEXT_HANDLE hac)
+ {
+ p_CSwift_ReleaseAccContext(hac);
+ }
+
+/* Destructor (complements the "ENGINE_cswift()" constructor) */
+static int cswift_destroy(ENGINE *e)
+ {
+ free_CSWIFT_LIBNAME();
+ ERR_unload_CSWIFT_strings();
+ return 1;
+ }
+
+/* (de)initialisation functions. */
+static int cswift_init(ENGINE *e)
+ {
+ SW_CONTEXT_HANDLE hac;
+ t_swAcquireAccContext *p1;
+ t_swAttachKeyParam *p2;
+ t_swSimpleRequest *p3;
+ t_swReleaseAccContext *p4;
+
+ if(cswift_dso != NULL)
+ {
+ CSWIFTerr(CSWIFT_F_CSWIFT_INIT,CSWIFT_R_ALREADY_LOADED);
+ goto err;
+ }
+ /* Attempt to load libswift.so/swift.dll/whatever. */
+ cswift_dso = DSO_load(NULL, get_CSWIFT_LIBNAME(), NULL, 0);
+ if(cswift_dso == NULL)
+ {
+ CSWIFTerr(CSWIFT_F_CSWIFT_INIT,CSWIFT_R_NOT_LOADED);
+ goto err;
+ }
+ if(!(p1 = (t_swAcquireAccContext *)
+ DSO_bind_func(cswift_dso, CSWIFT_F1)) ||
+ !(p2 = (t_swAttachKeyParam *)
+ DSO_bind_func(cswift_dso, CSWIFT_F2)) ||
+ !(p3 = (t_swSimpleRequest *)
+ DSO_bind_func(cswift_dso, CSWIFT_F3)) ||
+ !(p4 = (t_swReleaseAccContext *)
+ DSO_bind_func(cswift_dso, CSWIFT_F4)))
+ {
+ CSWIFTerr(CSWIFT_F_CSWIFT_INIT,CSWIFT_R_NOT_LOADED);
+ goto err;
+ }
+ /* Copy the pointers */
+ p_CSwift_AcquireAccContext = p1;
+ p_CSwift_AttachKeyParam = p2;
+ p_CSwift_SimpleRequest = p3;
+ p_CSwift_ReleaseAccContext = p4;
+ /* Try and get a context - if not, we may have a DSO but no
+ * accelerator! */
+ if(!get_context(&hac))
+ {
+ CSWIFTerr(CSWIFT_F_CSWIFT_INIT,CSWIFT_R_UNIT_FAILURE);
+ goto err;
+ }
+ release_context(hac);
+ /* Everything's fine. */
+ return 1;
+err:
+ if(cswift_dso)
+ {
+ DSO_free(cswift_dso);
+ cswift_dso = NULL;
+ }
+ p_CSwift_AcquireAccContext = NULL;
+ p_CSwift_AttachKeyParam = NULL;
+ p_CSwift_SimpleRequest = NULL;
+ p_CSwift_ReleaseAccContext = NULL;
+ return 0;
+ }
+
+static int cswift_finish(ENGINE *e)
+ {
+ free_CSWIFT_LIBNAME();
+ if(cswift_dso == NULL)
+ {
+ CSWIFTerr(CSWIFT_F_CSWIFT_FINISH,CSWIFT_R_NOT_LOADED);
+ return 0;
+ }
+ if(!DSO_free(cswift_dso))
+ {
+ CSWIFTerr(CSWIFT_F_CSWIFT_FINISH,CSWIFT_R_UNIT_FAILURE);
+ return 0;
+ }
+ cswift_dso = NULL;
+ p_CSwift_AcquireAccContext = NULL;
+ p_CSwift_AttachKeyParam = NULL;
+ p_CSwift_SimpleRequest = NULL;
+ p_CSwift_ReleaseAccContext = NULL;
+ return 1;
+ }
+
+static int cswift_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)(void))
+ {
+ int initialised = ((cswift_dso == NULL) ? 0 : 1);
+ switch(cmd)
+ {
+ case CSWIFT_CMD_SO_PATH:
+ if(p == NULL)
+ {
+ CSWIFTerr(CSWIFT_F_CSWIFT_CTRL,ERR_R_PASSED_NULL_PARAMETER);
+ return 0;
+ }
+ if(initialised)
+ {
+ CSWIFTerr(CSWIFT_F_CSWIFT_CTRL,CSWIFT_R_ALREADY_LOADED);
+ return 0;
+ }
+ return set_CSWIFT_LIBNAME((const char *)p);
+ default:
+ break;
+ }
+ CSWIFTerr(CSWIFT_F_CSWIFT_CTRL,CSWIFT_R_CTRL_COMMAND_NOT_IMPLEMENTED);
+ return 0;
+ }
+
+/* Un petit mod_exp */
+static int cswift_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 CryptoSwift 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 *modulus;
+ BIGNUM *exponent;
+ BIGNUM *argument;
+ BIGNUM *result;
+ SW_STATUS sw_status;
+ SW_LARGENUMBER arg, res;
+ SW_PARAM sw_param;
+ SW_CONTEXT_HANDLE hac;
+ int to_return, acquired;
+
+ modulus = exponent = argument = result = NULL;
+ to_return = 0; /* expect failure */
+ acquired = 0;
+
+ if(!get_context(&hac))
+ {
+ CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP,CSWIFT_R_UNIT_FAILURE);
+ goto err;
+ }
+ acquired = 1;
+ /* Prepare the params */
+ BN_CTX_start(ctx);
+ modulus = BN_CTX_get(ctx);
+ exponent = BN_CTX_get(ctx);
+ argument = BN_CTX_get(ctx);
+ result = BN_CTX_get(ctx);
+ if(!result)
+ {
+ CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP,CSWIFT_R_BN_CTX_FULL);
+ goto err;
+ }
+ if(!bn_wexpand(modulus, m->top) || !bn_wexpand(exponent, p->top) ||
+ !bn_wexpand(argument, a->top) || !bn_wexpand(result, m->top))
+ {
+ CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP,CSWIFT_R_BN_EXPAND_FAIL);
+ goto err;
+ }
+ sw_param.type = SW_ALG_EXP;
+ sw_param.up.exp.modulus.nbytes = BN_bn2bin(m,
+ (unsigned char *)modulus->d);
+ sw_param.up.exp.modulus.value = (unsigned char *)modulus->d;
+ sw_param.up.exp.exponent.nbytes = BN_bn2bin(p,
+ (unsigned char *)exponent->d);
+ sw_param.up.exp.exponent.value = (unsigned char *)exponent->d;
+ /* Attach the key params */
+ sw_status = p_CSwift_AttachKeyParam(hac, &sw_param);
+ switch(sw_status)
+ {
+ case SW_OK:
+ break;
+ case SW_ERR_INPUT_SIZE:
+ CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP,CSWIFT_R_BAD_KEY_SIZE);
+ goto err;
+ default:
+ {
+ char tmpbuf[DECIMAL_SIZE(sw_status)+1];
+ CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP,CSWIFT_R_REQUEST_FAILED);
+ sprintf(tmpbuf, "%ld", sw_status);
+ ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
+ }
+ goto err;
+ }
+ /* Prepare the argument and response */
+ arg.nbytes = BN_bn2bin(a, (unsigned char *)argument->d);
+ arg.value = (unsigned char *)argument->d;
+ res.nbytes = BN_num_bytes(m);
+ memset(result->d, 0, res.nbytes);
+ res.value = (unsigned char *)result->d;
+ /* Perform the operation */
+ if((sw_status = p_CSwift_SimpleRequest(hac, SW_CMD_MODEXP, &arg, 1,
+ &res, 1)) != SW_OK)
+ {
+ char tmpbuf[DECIMAL_SIZE(sw_status)+1];
+ CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP,CSWIFT_R_REQUEST_FAILED);
+ sprintf(tmpbuf, "%ld", sw_status);
+ ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
+ goto err;
+ }
+ /* Convert the response */
+ BN_bin2bn((unsigned char *)result->d, res.nbytes, r);
+ to_return = 1;
+err:
+ if(acquired)
+ release_context(hac);
+ BN_CTX_end(ctx);
+ return to_return;
+ }
+
+
+#ifndef OPENSSL_NO_RSA
+int cswift_bn_32copy(SW_LARGENUMBER * out, const BIGNUM * in)
+{
+ int mod;
+ int numbytes = BN_num_bytes(in);
+
+ mod = 0;
+ while( ((out->nbytes = (numbytes+mod)) % 32) )
+ {
+ mod++;
+ }
+ out->value = (unsigned char*)OPENSSL_malloc(out->nbytes);
+ if(!out->value)
+ {
+ return 0;
+ }
+ BN_bn2bin(in, &out->value[mod]);
+ if(mod)
+ memset(out->value, 0, mod);
+
+ return 1;
+}
+#endif
+
+#ifndef OPENSSL_NO_RSA
+/* Un petit mod_exp chinois */
+static int cswift_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)
+ {
+ SW_STATUS sw_status;
+ SW_LARGENUMBER arg, res;
+ SW_PARAM sw_param;
+ SW_CONTEXT_HANDLE hac;
+ BIGNUM *result = NULL;
+ BIGNUM *argument = NULL;
+ int to_return = 0; /* expect failure */
+ int acquired = 0;
+
+ sw_param.up.crt.p.value = NULL;
+ sw_param.up.crt.q.value = NULL;
+ sw_param.up.crt.dmp1.value = NULL;
+ sw_param.up.crt.dmq1.value = NULL;
+ sw_param.up.crt.iqmp.value = NULL;
+
+ if(!get_context(&hac))
+ {
+ CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_UNIT_FAILURE);
+ goto err;
+ }
+ acquired = 1;
+
+ /* Prepare the params */
+ argument = BN_new();
+ result = BN_new();
+ if(!result || !argument)
+ {
+ CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_BN_CTX_FULL);
+ goto err;
+ }
+
+
+ sw_param.type = SW_ALG_CRT;
+ /************************************************************************/
+ /* 04/02/2003 */
+ /* Modified by Frederic Giudicelli (deny-all.com) to overcome the */
+ /* limitation of cswift with values not a multiple of 32 */
+ /************************************************************************/
+ if(!cswift_bn_32copy(&sw_param.up.crt.p, p))
+ {
+ CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_BN_EXPAND_FAIL);
+ goto err;
+ }
+ if(!cswift_bn_32copy(&sw_param.up.crt.q, q))
+ {
+ CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_BN_EXPAND_FAIL);
+ goto err;
+ }
+ if(!cswift_bn_32copy(&sw_param.up.crt.dmp1, dmp1))
+ {
+ CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_BN_EXPAND_FAIL);
+ goto err;
+ }
+ if(!cswift_bn_32copy(&sw_param.up.crt.dmq1, dmq1))
+ {
+ CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_BN_EXPAND_FAIL);
+ goto err;
+ }
+ if(!cswift_bn_32copy(&sw_param.up.crt.iqmp, iqmp))
+ {
+ CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_BN_EXPAND_FAIL);
+ goto err;
+ }
+ if( !bn_wexpand(argument, a->top) ||
+ !bn_wexpand(result, p->top + q->top))
+ {
+ CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_BN_EXPAND_FAIL);
+ goto err;
+ }
+
+ /* Attach the key params */
+ sw_status = p_CSwift_AttachKeyParam(hac, &sw_param);
+ switch(sw_status)
+ {
+ case SW_OK:
+ break;
+ case SW_ERR_INPUT_SIZE:
+ CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_BAD_KEY_SIZE);
+ goto err;
+ default:
+ {
+ char tmpbuf[DECIMAL_SIZE(sw_status)+1];
+ CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_REQUEST_FAILED);
+ sprintf(tmpbuf, "%ld", sw_status);
+ ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
+ }
+ goto err;
+ }
+ /* Prepare the argument and response */
+ arg.nbytes = BN_bn2bin(a, (unsigned char *)argument->d);
+ arg.value = (unsigned char *)argument->d;
+ res.nbytes = 2 * BN_num_bytes(p);
+ memset(result->d, 0, res.nbytes);
+ res.value = (unsigned char *)result->d;
+ /* Perform the operation */
+ if((sw_status = p_CSwift_SimpleRequest(hac, SW_CMD_MODEXP_CRT, &arg, 1,
+ &res, 1)) != SW_OK)
+ {
+ char tmpbuf[DECIMAL_SIZE(sw_status)+1];
+ CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_REQUEST_FAILED);
+ sprintf(tmpbuf, "%ld", sw_status);
+ ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
+ goto err;
+ }
+ /* Convert the response */
+ BN_bin2bn((unsigned char *)result->d, res.nbytes, r);
+ to_return = 1;
+err:
+ if(sw_param.up.crt.p.value)
+ OPENSSL_free(sw_param.up.crt.p.value);
+ if(sw_param.up.crt.q.value)
+ OPENSSL_free(sw_param.up.crt.q.value);
+ if(sw_param.up.crt.dmp1.value)
+ OPENSSL_free(sw_param.up.crt.dmp1.value);
+ if(sw_param.up.crt.dmq1.value)
+ OPENSSL_free(sw_param.up.crt.dmq1.value);
+ if(sw_param.up.crt.iqmp.value)
+ OPENSSL_free(sw_param.up.crt.iqmp.value);
+ if(result)
+ BN_free(result);
+ if(argument)
+ BN_free(argument);
+ if(acquired)
+ release_context(hac);
+ return to_return;
+ }
+#endif
+
+#ifndef OPENSSL_NO_RSA
+static int cswift_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx)
+ {
+ int to_return = 0;
+ const RSA_METHOD * def_rsa_method;
+
+ if(!rsa->p || !rsa->q || !rsa->dmp1 || !rsa->dmq1 || !rsa->iqmp)
+ {
+ CSWIFTerr(CSWIFT_F_CSWIFT_RSA_MOD_EXP,CSWIFT_R_MISSING_KEY_COMPONENTS);
+ goto err;
+ }
+
+ /* Try the limits of RSA (2048 bits) */
+ if(BN_num_bytes(rsa->p) > 128 ||
+ BN_num_bytes(rsa->q) > 128 ||
+ BN_num_bytes(rsa->dmp1) > 128 ||
+ BN_num_bytes(rsa->dmq1) > 128 ||
+ BN_num_bytes(rsa->iqmp) > 128)
+ {
+#ifdef RSA_NULL
+ def_rsa_method=RSA_null_method();
+#else
+#if 0
+ def_rsa_method=RSA_PKCS1_RSAref();
+#else
+ def_rsa_method=RSA_PKCS1_SSLeay();
+#endif
+#endif
+ if(def_rsa_method)
+ return def_rsa_method->rsa_mod_exp(r0, I, rsa, ctx);
+ }
+
+ to_return = cswift_mod_exp_crt(r0, I, rsa->p, rsa->q, rsa->dmp1,
+ rsa->dmq1, rsa->iqmp, ctx);
+err:
+ return to_return;
+ }
+
+/* This function is aliased to mod_exp (with the mont stuff dropped). */
+static int cswift_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
+ const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
+ {
+ const RSA_METHOD * def_rsa_method;
+
+ /* Try the limits of RSA (2048 bits) */
+ if(BN_num_bytes(r) > 256 ||
+ BN_num_bytes(a) > 256 ||
+ BN_num_bytes(m) > 256)
+ {
+#ifdef RSA_NULL
+ def_rsa_method=RSA_null_method();
+#else
+#if 0
+ def_rsa_method=RSA_PKCS1_RSAref();
+#else
+ def_rsa_method=RSA_PKCS1_SSLeay();
+#endif
+#endif
+ if(def_rsa_method)
+ return def_rsa_method->bn_mod_exp(r, a, p, m, ctx, m_ctx);
+ }
+
+ return cswift_mod_exp(r, a, p, m, ctx);
+ }
+#endif /* OPENSSL_NO_RSA */
+
+#ifndef OPENSSL_NO_DSA
+static DSA_SIG *cswift_dsa_sign(const unsigned char *dgst, int dlen, DSA *dsa)
+ {
+ SW_CONTEXT_HANDLE hac;
+ SW_PARAM sw_param;
+ SW_STATUS sw_status;
+ SW_LARGENUMBER arg, res;
+ BN_CTX *ctx;
+ BIGNUM *dsa_p = NULL;
+ BIGNUM *dsa_q = NULL;
+ BIGNUM *dsa_g = NULL;
+ BIGNUM *dsa_key = NULL;
+ BIGNUM *result = NULL;
+ DSA_SIG *to_return = NULL;
+ int acquired = 0;
+
+ if((ctx = BN_CTX_new()) == NULL)
+ goto err;
+ if(!get_context(&hac))
+ {
+ CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN,CSWIFT_R_UNIT_FAILURE);
+ goto err;
+ }
+ acquired = 1;
+ /* Prepare the params */
+ BN_CTX_start(ctx);
+ dsa_p = BN_CTX_get(ctx);
+ dsa_q = BN_CTX_get(ctx);
+ dsa_g = BN_CTX_get(ctx);
+ dsa_key = BN_CTX_get(ctx);
+ result = BN_CTX_get(ctx);
+ if(!result)
+ {
+ CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN,CSWIFT_R_BN_CTX_FULL);
+ goto err;
+ }
+ if(!bn_wexpand(dsa_p, dsa->p->top) ||
+ !bn_wexpand(dsa_q, dsa->q->top) ||
+ !bn_wexpand(dsa_g, dsa->g->top) ||
+ !bn_wexpand(dsa_key, dsa->priv_key->top) ||
+ !bn_wexpand(result, dsa->p->top))
+ {
+ CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN,CSWIFT_R_BN_EXPAND_FAIL);
+ goto err;
+ }
+ sw_param.type = SW_ALG_DSA;
+ sw_param.up.dsa.p.nbytes = BN_bn2bin(dsa->p,
+ (unsigned char *)dsa_p->d);
+ sw_param.up.dsa.p.value = (unsigned char *)dsa_p->d;
+ sw_param.up.dsa.q.nbytes = BN_bn2bin(dsa->q,
+ (unsigned char *)dsa_q->d);
+ sw_param.up.dsa.q.value = (unsigned char *)dsa_q->d;
+ sw_param.up.dsa.g.nbytes = BN_bn2bin(dsa->g,
+ (unsigned char *)dsa_g->d);
+ sw_param.up.dsa.g.value = (unsigned char *)dsa_g->d;
+ sw_param.up.dsa.key.nbytes = BN_bn2bin(dsa->priv_key,
+ (unsigned char *)dsa_key->d);
+ sw_param.up.dsa.key.value = (unsigned char *)dsa_key->d;
+ /* Attach the key params */
+ sw_status = p_CSwift_AttachKeyParam(hac, &sw_param);
+ switch(sw_status)
+ {
+ case SW_OK:
+ break;
+ case SW_ERR_INPUT_SIZE:
+ CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN,CSWIFT_R_BAD_KEY_SIZE);
+ goto err;
+ default:
+ {
+ char tmpbuf[DECIMAL_SIZE(sw_status)+1];
+ CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN,CSWIFT_R_REQUEST_FAILED);
+ sprintf(tmpbuf, "%ld", sw_status);
+ ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
+ }
+ goto err;
+ }
+ /* Prepare the argument and response */
+ arg.nbytes = dlen;
+ arg.value = (unsigned char *)dgst;
+ res.nbytes = BN_num_bytes(dsa->p);
+ memset(result->d, 0, res.nbytes);
+ res.value = (unsigned char *)result->d;
+ /* Perform the operation */
+ sw_status = p_CSwift_SimpleRequest(hac, SW_CMD_DSS_SIGN, &arg, 1,
+ &res, 1);
+ if(sw_status != SW_OK)
+ {
+ char tmpbuf[DECIMAL_SIZE(sw_status)+1];
+ CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN,CSWIFT_R_REQUEST_FAILED);
+ sprintf(tmpbuf, "%ld", sw_status);
+ ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
+ goto err;
+ }
+ /* Convert the response */
+ if((to_return = DSA_SIG_new()) == NULL)
+ goto err;
+ to_return->r = BN_bin2bn((unsigned char *)result->d, 20, NULL);
+ to_return->s = BN_bin2bn((unsigned char *)result->d + 20, 20, NULL);
+
+err:
+ if(acquired)
+ release_context(hac);
+ if(ctx)
+ {
+ BN_CTX_end(ctx);
+ BN_CTX_free(ctx);
+ }
+ return to_return;
+ }
+
+static int cswift_dsa_verify(const unsigned char *dgst, int dgst_len,
+ DSA_SIG *sig, DSA *dsa)
+ {
+ SW_CONTEXT_HANDLE hac;
+ SW_PARAM sw_param;
+ SW_STATUS sw_status;
+ SW_LARGENUMBER arg[2], res;
+ unsigned long sig_result;
+ BN_CTX *ctx;
+ BIGNUM *dsa_p = NULL;
+ BIGNUM *dsa_q = NULL;
+ BIGNUM *dsa_g = NULL;
+ BIGNUM *dsa_key = NULL;
+ BIGNUM *argument = NULL;
+ int to_return = -1;
+ int acquired = 0;
+
+ if((ctx = BN_CTX_new()) == NULL)
+ goto err;
+ if(!get_context(&hac))
+ {
+ CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY,CSWIFT_R_UNIT_FAILURE);
+ goto err;
+ }
+ acquired = 1;
+ /* Prepare the params */
+ BN_CTX_start(ctx);
+ dsa_p = BN_CTX_get(ctx);
+ dsa_q = BN_CTX_get(ctx);
+ dsa_g = BN_CTX_get(ctx);
+ dsa_key = BN_CTX_get(ctx);
+ argument = BN_CTX_get(ctx);
+ if(!argument)
+ {
+ CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY,CSWIFT_R_BN_CTX_FULL);
+ goto err;
+ }
+ if(!bn_wexpand(dsa_p, dsa->p->top) ||
+ !bn_wexpand(dsa_q, dsa->q->top) ||
+ !bn_wexpand(dsa_g, dsa->g->top) ||
+ !bn_wexpand(dsa_key, dsa->pub_key->top) ||
+ !bn_wexpand(argument, 40))
+ {
+ CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY,CSWIFT_R_BN_EXPAND_FAIL);
+ goto err;
+ }
+ sw_param.type = SW_ALG_DSA;
+ sw_param.up.dsa.p.nbytes = BN_bn2bin(dsa->p,
+ (unsigned char *)dsa_p->d);
+ sw_param.up.dsa.p.value = (unsigned char *)dsa_p->d;
+ sw_param.up.dsa.q.nbytes = BN_bn2bin(dsa->q,
+ (unsigned char *)dsa_q->d);
+ sw_param.up.dsa.q.value = (unsigned char *)dsa_q->d;
+ sw_param.up.dsa.g.nbytes = BN_bn2bin(dsa->g,
+ (unsigned char *)dsa_g->d);
+ sw_param.up.dsa.g.value = (unsigned char *)dsa_g->d;
+ sw_param.up.dsa.key.nbytes = BN_bn2bin(dsa->pub_key,
+ (unsigned char *)dsa_key->d);
+ sw_param.up.dsa.key.value = (unsigned char *)dsa_key->d;
+ /* Attach the key params */
+ sw_status = p_CSwift_AttachKeyParam(hac, &sw_param);
+ switch(sw_status)
+ {
+ case SW_OK:
+ break;
+ case SW_ERR_INPUT_SIZE:
+ CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY,CSWIFT_R_BAD_KEY_SIZE);
+ goto err;
+ default:
+ {
+ char tmpbuf[DECIMAL_SIZE(sw_status)+1];
+ CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY,CSWIFT_R_REQUEST_FAILED);
+ sprintf(tmpbuf, "%ld", sw_status);
+ ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
+ }
+ goto err;
+ }
+ /* Prepare the argument and response */
+ arg[0].nbytes = dgst_len;
+ arg[0].value = (unsigned char *)dgst;
+ arg[1].nbytes = 40;
+ arg[1].value = (unsigned char *)argument->d;
+ memset(arg[1].value, 0, 40);
+ BN_bn2bin(sig->r, arg[1].value + 20 - BN_num_bytes(sig->r));
+ BN_bn2bin(sig->s, arg[1].value + 40 - BN_num_bytes(sig->s));
+ res.nbytes = 4; /* unsigned long */
+ res.value = (unsigned char *)(&sig_result);
+ /* Perform the operation */
+ sw_status = p_CSwift_SimpleRequest(hac, SW_CMD_DSS_VERIFY, arg, 2,
+ &res, 1);
+ if(sw_status != SW_OK)
+ {
+ char tmpbuf[DECIMAL_SIZE(sw_status)+1];
+ CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY,CSWIFT_R_REQUEST_FAILED);
+ sprintf(tmpbuf, "%ld", sw_status);
+ ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
+ goto err;
+ }
+ /* Convert the response */
+ to_return = ((sig_result == 0) ? 0 : 1);
+
+err:
+ if(acquired)
+ release_context(hac);
+ if(ctx)
+ {
+ BN_CTX_end(ctx);
+ BN_CTX_free(ctx);
+ }
+ return to_return;
+ }
+#endif
+
+#ifndef OPENSSL_NO_DH
+/* This function is aliased to mod_exp (with the dh and mont dropped). */
+static int cswift_mod_exp_dh(const DH *dh, BIGNUM *r,
+ const BIGNUM *a, const BIGNUM *p,
+ const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
+ {
+ return cswift_mod_exp(r, a, p, m, ctx);
+ }
+#endif
+
+/* Random bytes are good */
+static int cswift_rand_bytes(unsigned char *buf, int num)
+{
+ SW_CONTEXT_HANDLE hac;
+ SW_STATUS swrc;
+ SW_LARGENUMBER largenum;
+ int acquired = 0;
+ int to_return = 0; /* assume failure */
+ unsigned char buf32[1024];
+
+
+ if (!get_context(&hac))
+ {
+ CSWIFTerr(CSWIFT_F_CSWIFT_RAND_BYTES, CSWIFT_R_UNIT_FAILURE);
+ goto err;
+ }
+ acquired = 1;
+
+ /************************************************************************/
+ /* 04/02/2003 */
+ /* Modified by Frederic Giudicelli (deny-all.com) to overcome the */
+ /* limitation of cswift with values not a multiple of 32 */
+ /************************************************************************/
+
+ while(num >= (int)sizeof(buf32))
+ {
+ largenum.value = buf;
+ largenum.nbytes = sizeof(buf32);
+ /* tell CryptoSwift how many bytes we want and where we want it.
+ * Note: - CryptoSwift cannot do more than 4096 bytes at a time.
+ * - CryptoSwift can only do multiple of 32-bits. */
+ swrc = p_CSwift_SimpleRequest(hac, SW_CMD_RAND, NULL, 0, &largenum, 1);
+ if (swrc != SW_OK)
+ {
+ char tmpbuf[20];
+ CSWIFTerr(CSWIFT_F_CSWIFT_RAND_BYTES, CSWIFT_R_REQUEST_FAILED);
+ sprintf(tmpbuf, "%ld", swrc);
+ ERR_add_error_data(2, "CryptoSwift error number is ", tmpbuf);
+ goto err;
+ }
+ buf += sizeof(buf32);
+ num -= sizeof(buf32);
+ }
+ if(num)
+ {
+ largenum.nbytes = sizeof(buf32);
+ largenum.value = buf32;
+ swrc = p_CSwift_SimpleRequest(hac, SW_CMD_RAND, NULL, 0, &largenum, 1);
+ if (swrc != SW_OK)
+ {
+ char tmpbuf[20];
+ CSWIFTerr(CSWIFT_F_CSWIFT_RAND_BYTES, CSWIFT_R_REQUEST_FAILED);
+ sprintf(tmpbuf, "%ld", swrc);
+ ERR_add_error_data(2, "CryptoSwift error number is ", tmpbuf);
+ goto err;
+ }
+ memcpy(buf, largenum.value, num);
+ }
+
+ to_return = 1; /* success */
+err:
+ if (acquired)
+ release_context(hac);
+
+ return to_return;
+}
+
+static int cswift_rand_status(void)
+{
+ return 1;
+}
+
+
+/* This stuff is needed if this ENGINE is being compiled into a self-contained
+ * shared-library. */
+#ifndef OPENSSL_NO_DYNAMIC_ENGINE
+static int bind_fn(ENGINE *e, const char *id)
+ {
+ if(id && (strcmp(id, engine_cswift_id) != 0))
+ return 0;
+ if(!bind_helper(e))
+ return 0;
+ return 1;
+ }
+IMPLEMENT_DYNAMIC_CHECK_FN()
+IMPLEMENT_DYNAMIC_BIND_FN(bind_fn)
+#endif /* OPENSSL_NO_DYNAMIC_ENGINE */
+
+#endif /* !OPENSSL_NO_HW_CSWIFT */
+#endif /* !OPENSSL_NO_HW */
projects / cassiopeia.git / blobdiff