+++ /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