/* crypto/engine/hw_nuron.c */ /* Written by Ben Laurie for the OpenSSL Project, leaning heavily on Geoff * Thorpe's Atalla implementation. */ /* ==================================================================== * Copyright (c) 2000-2001 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/bn.h> #ifndef OPENSSL_NO_HW #ifndef OPENSSL_NO_HW_NURON #define NURON_LIB_NAME "nuron engine" #include "e_nuron_err.c" static const char *NURON_LIBNAME = NULL; static const char *get_NURON_LIBNAME(void) { if(NURON_LIBNAME) return NURON_LIBNAME; return "nuronssl"; } static void free_NURON_LIBNAME(void) { if(NURON_LIBNAME) OPENSSL_free((void*)NURON_LIBNAME); NURON_LIBNAME = NULL; } static long set_NURON_LIBNAME(const char *name) { free_NURON_LIBNAME(); return (((NURON_LIBNAME = BUF_strdup(name)) != NULL) ? 1 : 0); } static const char *NURON_F1 = "nuron_mod_exp"; /* The definitions for control commands specific to this engine */ #define NURON_CMD_SO_PATH ENGINE_CMD_BASE static const ENGINE_CMD_DEFN nuron_cmd_defns[] = { {NURON_CMD_SO_PATH, "SO_PATH", "Specifies the path to the 'nuronssl' shared library", ENGINE_CMD_FLAG_STRING}, {0, NULL, NULL, 0} }; typedef int tfnModExp(BIGNUM *r,const BIGNUM *a,const BIGNUM *p,const BIGNUM *m); static tfnModExp *pfnModExp = NULL; static DSO *pvDSOHandle = NULL; static int nuron_destroy(ENGINE *e) { free_NURON_LIBNAME(); ERR_unload_NURON_strings(); return 1; } static int nuron_init(ENGINE *e) { if(pvDSOHandle != NULL) { NURONerr(NURON_F_NURON_INIT,NURON_R_ALREADY_LOADED); return 0; } pvDSOHandle = DSO_load(NULL, get_NURON_LIBNAME(), NULL, DSO_FLAG_NAME_TRANSLATION_EXT_ONLY); if(!pvDSOHandle) { NURONerr(NURON_F_NURON_INIT,NURON_R_DSO_NOT_FOUND); return 0; } pfnModExp = (tfnModExp *)DSO_bind_func(pvDSOHandle, NURON_F1); if(!pfnModExp) { NURONerr(NURON_F_NURON_INIT,NURON_R_DSO_FUNCTION_NOT_FOUND); return 0; } return 1; } static int nuron_finish(ENGINE *e) { free_NURON_LIBNAME(); if(pvDSOHandle == NULL) { NURONerr(NURON_F_NURON_FINISH,NURON_R_NOT_LOADED); return 0; } if(!DSO_free(pvDSOHandle)) { NURONerr(NURON_F_NURON_FINISH,NURON_R_DSO_FAILURE); return 0; } pvDSOHandle=NULL; pfnModExp=NULL; return 1; } static int nuron_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)(void)) { int initialised = ((pvDSOHandle == NULL) ? 0 : 1); switch(cmd) { case NURON_CMD_SO_PATH: if(p == NULL) { NURONerr(NURON_F_NURON_CTRL,ERR_R_PASSED_NULL_PARAMETER); return 0; } if(initialised) { NURONerr(NURON_F_NURON_CTRL,NURON_R_ALREADY_LOADED); return 0; } return set_NURON_LIBNAME((const char *)p); default: break; } NURONerr(NURON_F_NURON_CTRL,NURON_R_CTRL_COMMAND_NOT_IMPLEMENTED); return 0; } static int nuron_mod_exp(BIGNUM *r,const BIGNUM *a,const BIGNUM *p, const BIGNUM *m,BN_CTX *ctx) { if(!pvDSOHandle) { NURONerr(NURON_F_NURON_MOD_EXP,NURON_R_NOT_LOADED); return 0; } return pfnModExp(r,a,p,m); } #ifndef OPENSSL_NO_RSA static int nuron_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx) { return nuron_mod_exp(r0,I,rsa->d,rsa->n,ctx); } #endif #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 Atalla acceleration * (it doesn't have a CRT form for RSA), this function means that an * Atalla 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 atalla dsa1024 rsa1024". */ static int nuron_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 (!nuron_mod_exp(rr,a1,p1,m,ctx)) goto end; /* let t = a2 ^ p2 mod m */ if (!nuron_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 nuron_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a, const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx) { return nuron_mod_exp(r, a, p, m, ctx); } #endif /* This function is aliased to mod_exp (with the mont stuff dropped). */ #ifndef OPENSSL_NO_RSA static int nuron_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx) { return nuron_mod_exp(r, a, p, m, ctx); } #endif #ifndef OPENSSL_NO_DH /* This function is aliased to mod_exp (with the dh and mont dropped). */ static int nuron_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 nuron_mod_exp(r, a, p, m, ctx); } #endif #ifndef OPENSSL_NO_RSA static RSA_METHOD nuron_rsa = { "Nuron RSA method", NULL, NULL, NULL, NULL, nuron_rsa_mod_exp, nuron_mod_exp_mont, NULL, NULL, 0, NULL, NULL, NULL, NULL }; #endif #ifndef OPENSSL_NO_DSA static DSA_METHOD nuron_dsa = { "Nuron DSA method", NULL, /* dsa_do_sign */ NULL, /* dsa_sign_setup */ NULL, /* dsa_do_verify */ nuron_dsa_mod_exp, /* dsa_mod_exp */ nuron_mod_exp_dsa, /* bn_mod_exp */ NULL, /* init */ NULL, /* finish */ 0, /* flags */ NULL, /* app_data */ NULL, /* dsa_paramgen */ NULL /* dsa_keygen */ }; #endif #ifndef OPENSSL_NO_DH static DH_METHOD nuron_dh = { "Nuron DH method", NULL, NULL, nuron_mod_exp_dh, NULL, NULL, 0, NULL, NULL }; #endif /* Constants used when creating the ENGINE */ static const char *engine_nuron_id = "nuron"; static const char *engine_nuron_name = "Nuron hardware engine support"; /* This internal function is used by ENGINE_nuron() 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_nuron_id) || !ENGINE_set_name(e, engine_nuron_name) || #ifndef OPENSSL_NO_RSA !ENGINE_set_RSA(e, &nuron_rsa) || #endif #ifndef OPENSSL_NO_DSA !ENGINE_set_DSA(e, &nuron_dsa) || #endif #ifndef OPENSSL_NO_DH !ENGINE_set_DH(e, &nuron_dh) || #endif !ENGINE_set_destroy_function(e, nuron_destroy) || !ENGINE_set_init_function(e, nuron_init) || !ENGINE_set_finish_function(e, nuron_finish) || !ENGINE_set_ctrl_function(e, nuron_ctrl) || !ENGINE_set_cmd_defns(e, nuron_cmd_defns)) return 0; #ifndef OPENSSL_NO_RSA /* We know that the "PKCS1_SSLeay()" functions hook properly * to the nuron-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(); nuron_rsa.rsa_pub_enc=meth1->rsa_pub_enc; nuron_rsa.rsa_pub_dec=meth1->rsa_pub_dec; nuron_rsa.rsa_priv_enc=meth1->rsa_priv_enc; nuron_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(); nuron_dsa.dsa_do_sign=meth2->dsa_do_sign; nuron_dsa.dsa_sign_setup=meth2->dsa_sign_setup; nuron_dsa.dsa_do_verify=meth2->dsa_do_verify; #endif #ifndef OPENSSL_NO_DH /* Much the same for Diffie-Hellman */ meth3=DH_OpenSSL(); nuron_dh.generate_key=meth3->generate_key; nuron_dh.compute_key=meth3->compute_key; #endif /* Ensure the nuron error handling is set up */ ERR_load_NURON_strings(); return 1; } #ifdef OPENSSL_NO_DYNAMIC_ENGINE static ENGINE *engine_nuron(void) { ENGINE *ret = ENGINE_new(); if(!ret) return NULL; if(!bind_helper(ret)) { ENGINE_free(ret); return NULL; } return ret; } void ENGINE_load_nuron(void) { /* Copied from eng_[openssl|dyn].c */ ENGINE *toadd = engine_nuron(); if(!toadd) return; ENGINE_add(toadd); ENGINE_free(toadd); ERR_clear_error(); } #endif /* 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_nuron_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_NURON */ #endif /* !OPENSSL_NO_HW */