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Diffstat (limited to 'crypto/engine/hw_nuron.c')
| -rw-r--r-- | crypto/engine/hw_nuron.c | 286 |
1 files changed, 286 insertions, 0 deletions
diff --git a/crypto/engine/hw_nuron.c b/crypto/engine/hw_nuron.c new file mode 100644 index 0000000000..d8a3e3f1fa --- /dev/null +++ b/crypto/engine/hw_nuron.c @@ -0,0 +1,286 @@ +/* crypto/engine/hw_nuron.c */ +/* Written by Ben Laurie for the OpenSSL Project, leaning heavily on Geoff + * Thorpe's Atalla implementation. + */ +/* ==================================================================== + * Copyright (c) 2000 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 <openssl/crypto.h> +#include "cryptlib.h" +#include <openssl/dso.h> +#include "engine_int.h" +#include <openssl/engine.h> +#include <dlfcn.h> + + +#ifndef NO_HW +#ifndef NO_HW_NURON + +typedef int tfnModExp(BIGNUM *r,BIGNUM *a,const BIGNUM *p,const BIGNUM *m); +static tfnModExp *pfnModExp = NULL; + +static DSO *pvDSOHandle = NULL; + +static int nuron_init() + { + if(pvDSOHandle != NULL) + { + ENGINEerr(ENGINE_F_NURON_INIT,ENGINE_R_ALREADY_LOADED); + return 0; + } + + pvDSOHandle=DSO_load(NULL,"nuronssl",NULL, + DSO_FLAG_NAME_TRANSLATION_EXT_ONLY); + if(!pvDSOHandle) + { + ENGINEerr(ENGINE_F_NURON_INIT,ENGINE_R_DSO_NOT_FOUND); + return 0; + } + + pfnModExp=(tfnModExp *)DSO_bind_func(pvDSOHandle,"nuron_mod_exp"); + if(!pfnModExp) + { + ENGINEerr(ENGINE_F_NURON_INIT,ENGINE_R_DSO_FUNCTION_NOT_FOUND); + return 0; + } + + return 1; + } + +static int nuron_finish() + { + if(pvDSOHandle == NULL) + { + ENGINEerr(ENGINE_F_NURON_FINISH,ENGINE_R_NOT_LOADED); + return 0; + } + if(!DSO_free(pvDSOHandle)) + { + ENGINEerr(ENGINE_F_NURON_FINISH,ENGINE_R_DSO_FAILURE); + return 0; + } + pvDSOHandle=NULL; + pfnModExp=NULL; + return 1; + } + +static int nuron_mod_exp(BIGNUM *r,BIGNUM *a,const BIGNUM *p, + const BIGNUM *m,BN_CTX *ctx) + { + if(!pvDSOHandle) + { + ENGINEerr(ENGINE_F_NURON_MOD_EXP,ENGINE_R_NOT_LOADED); + return 0; + } + return pfnModExp(r,a,p,m); + } + +static int nuron_rsa_mod_exp(BIGNUM *r0, BIGNUM *I, RSA *rsa) + { + return nuron_mod_exp(r0,I,rsa->d,rsa->n,NULL); + } + +/* 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); + } + +/* This function is aliased to mod_exp (with the mont stuff dropped). */ +static int nuron_mod_exp_mont(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); + } + +/* This function is aliased to mod_exp (with the dh and mont dropped). */ +static int nuron_mod_exp_dh(DH *dh, 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); + } + +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 + }; + +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 */ + }; + +static DH_METHOD nuron_dh = + { + "Nuron DH method", + NULL, + NULL, + nuron_mod_exp_dh, + NULL, + NULL, + 0, + NULL + }; + +static ENGINE engine_nuron = + { + "nuron", + "Nuron hardware engine support", + &nuron_rsa, + &nuron_dsa, + &nuron_dh, + NULL, + nuron_mod_exp, + NULL, + nuron_init, + nuron_finish, + NULL, /* no ctrl() */ + NULL, /* no load_privkey() */ + NULL, /* no load_pubkey() */ + 0, /* no flags */ + 0, 0, /* no references */ + NULL, NULL /* unlinked */ + }; + +/* As this is only ever called once, there's no need for locking + * (indeed - the lock will already be held by our caller!!!) */ +ENGINE *ENGINE_nuron() + { + RSA_METHOD *meth1; + DSA_METHOD *meth2; + DH_METHOD *meth3; + + /* 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; + + /* 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; + + /* Much the same for Diffie-Hellman */ + meth3=DH_OpenSSL(); + nuron_dh.generate_key=meth3->generate_key; + nuron_dh.compute_key=meth3->compute_key; + return &engine_nuron; + } + +#endif /* !NO_HW_NURON */ +#endif /* !NO_HW */ |