1 /* crypto/engine/hw_nuron.c */
2 /* Written by Ben Laurie for the OpenSSL Project, leaning heavily on Geoff
3 * Thorpe's Atalla implementation.
5 /* ====================================================================
6 * Copyright (c) 2000-2001 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
61 #include <openssl/crypto.h>
62 #include <openssl/buffer.h>
63 #include <openssl/dso.h>
64 #include <openssl/engine.h>
65 #ifndef OPENSSL_NO_RSA
66 #include <openssl/rsa.h>
68 #ifndef OPENSSL_NO_DSA
69 #include <openssl/dsa.h>
72 #include <openssl/dh.h>
74 #include <openssl/bn.h>
77 #ifndef OPENSSL_NO_HW_NURON
79 #define NURON_LIB_NAME "nuron engine"
80 #include "e_nuron_err.c"
82 static const char *NURON_LIBNAME = NULL;
83 static const char *get_NURON_LIBNAME(void)
89 static void free_NURON_LIBNAME(void)
92 OPENSSL_free((void*)NURON_LIBNAME);
95 static long set_NURON_LIBNAME(const char *name)
98 return (((NURON_LIBNAME = BUF_strdup(name)) != NULL) ? 1 : 0);
100 static const char *NURON_F1 = "nuron_mod_exp";
102 /* The definitions for control commands specific to this engine */
103 #define NURON_CMD_SO_PATH ENGINE_CMD_BASE
104 static const ENGINE_CMD_DEFN nuron_cmd_defns[] = {
107 "Specifies the path to the 'nuronssl' shared library",
108 ENGINE_CMD_FLAG_STRING},
112 typedef int tfnModExp(BIGNUM *r,const BIGNUM *a,const BIGNUM *p,const BIGNUM *m);
113 static tfnModExp *pfnModExp = NULL;
115 static DSO *pvDSOHandle = NULL;
117 static int nuron_destroy(ENGINE *e)
119 free_NURON_LIBNAME();
120 ERR_unload_NURON_strings();
124 static int nuron_init(ENGINE *e)
126 if(pvDSOHandle != NULL)
128 NURONerr(NURON_F_NURON_INIT,NURON_R_ALREADY_LOADED);
132 pvDSOHandle = DSO_load(NULL, get_NURON_LIBNAME(), NULL,
133 DSO_FLAG_NAME_TRANSLATION_EXT_ONLY);
136 NURONerr(NURON_F_NURON_INIT,NURON_R_DSO_NOT_FOUND);
140 pfnModExp = (tfnModExp *)DSO_bind_func(pvDSOHandle, NURON_F1);
143 NURONerr(NURON_F_NURON_INIT,NURON_R_DSO_FUNCTION_NOT_FOUND);
150 static int nuron_finish(ENGINE *e)
152 free_NURON_LIBNAME();
153 if(pvDSOHandle == NULL)
155 NURONerr(NURON_F_NURON_FINISH,NURON_R_NOT_LOADED);
158 if(!DSO_free(pvDSOHandle))
160 NURONerr(NURON_F_NURON_FINISH,NURON_R_DSO_FAILURE);
168 static int nuron_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)(void))
170 int initialised = ((pvDSOHandle == NULL) ? 0 : 1);
173 case NURON_CMD_SO_PATH:
176 NURONerr(NURON_F_NURON_CTRL,ERR_R_PASSED_NULL_PARAMETER);
181 NURONerr(NURON_F_NURON_CTRL,NURON_R_ALREADY_LOADED);
184 return set_NURON_LIBNAME((const char *)p);
188 NURONerr(NURON_F_NURON_CTRL,NURON_R_CTRL_COMMAND_NOT_IMPLEMENTED);
192 static int nuron_mod_exp(BIGNUM *r,const BIGNUM *a,const BIGNUM *p,
193 const BIGNUM *m,BN_CTX *ctx)
197 NURONerr(NURON_F_NURON_MOD_EXP,NURON_R_NOT_LOADED);
200 return pfnModExp(r,a,p,m);
203 #ifndef OPENSSL_NO_RSA
204 static int nuron_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx)
206 return nuron_mod_exp(r0,I,rsa->d,rsa->n,ctx);
210 #ifndef OPENSSL_NO_DSA
211 /* This code was liberated and adapted from the commented-out code in
212 * dsa_ossl.c. Because of the unoptimised form of the Atalla acceleration
213 * (it doesn't have a CRT form for RSA), this function means that an
214 * Atalla system running with a DSA server certificate can handshake
215 * around 5 or 6 times faster/more than an equivalent system running with
216 * RSA. Just check out the "signs" statistics from the RSA and DSA parts
217 * of "openssl speed -engine atalla dsa1024 rsa1024". */
218 static int nuron_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1,
219 BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m,
220 BN_CTX *ctx, BN_MONT_CTX *in_mont)
226 /* let rr = a1 ^ p1 mod m */
227 if (!nuron_mod_exp(rr,a1,p1,m,ctx))
229 /* let t = a2 ^ p2 mod m */
230 if (!nuron_mod_exp(&t,a2,p2,m,ctx))
232 /* let rr = rr * t mod m */
233 if (!BN_mod_mul(rr,rr,&t,m,ctx))
242 static int nuron_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a,
243 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
246 return nuron_mod_exp(r, a, p, m, ctx);
250 /* This function is aliased to mod_exp (with the mont stuff dropped). */
251 #ifndef OPENSSL_NO_RSA
252 static int nuron_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
253 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
255 return nuron_mod_exp(r, a, p, m, ctx);
259 #ifndef OPENSSL_NO_DH
260 /* This function is aliased to mod_exp (with the dh and mont dropped). */
261 static int nuron_mod_exp_dh(const DH *dh, BIGNUM *r,
262 const BIGNUM *a, const BIGNUM *p,
263 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
265 return nuron_mod_exp(r, a, p, m, ctx);
269 #ifndef OPENSSL_NO_RSA
270 static RSA_METHOD nuron_rsa =
289 #ifndef OPENSSL_NO_DSA
290 static DSA_METHOD nuron_dsa =
293 NULL, /* dsa_do_sign */
294 NULL, /* dsa_sign_setup */
295 NULL, /* dsa_do_verify */
296 nuron_dsa_mod_exp, /* dsa_mod_exp */
297 nuron_mod_exp_dsa, /* bn_mod_exp */
302 NULL, /* dsa_paramgen */
303 NULL /* dsa_keygen */
307 #ifndef OPENSSL_NO_DH
308 static DH_METHOD nuron_dh =
322 /* Constants used when creating the ENGINE */
323 static const char *engine_nuron_id = "nuron";
324 static const char *engine_nuron_name = "Nuron hardware engine support";
326 /* This internal function is used by ENGINE_nuron() and possibly by the
327 * "dynamic" ENGINE support too */
328 static int bind_helper(ENGINE *e)
330 #ifndef OPENSSL_NO_RSA
331 const RSA_METHOD *meth1;
333 #ifndef OPENSSL_NO_DSA
334 const DSA_METHOD *meth2;
336 #ifndef OPENSSL_NO_DH
337 const DH_METHOD *meth3;
339 if(!ENGINE_set_id(e, engine_nuron_id) ||
340 !ENGINE_set_name(e, engine_nuron_name) ||
341 #ifndef OPENSSL_NO_RSA
342 !ENGINE_set_RSA(e, &nuron_rsa) ||
344 #ifndef OPENSSL_NO_DSA
345 !ENGINE_set_DSA(e, &nuron_dsa) ||
347 #ifndef OPENSSL_NO_DH
348 !ENGINE_set_DH(e, &nuron_dh) ||
350 !ENGINE_set_destroy_function(e, nuron_destroy) ||
351 !ENGINE_set_init_function(e, nuron_init) ||
352 !ENGINE_set_finish_function(e, nuron_finish) ||
353 !ENGINE_set_ctrl_function(e, nuron_ctrl) ||
354 !ENGINE_set_cmd_defns(e, nuron_cmd_defns))
357 #ifndef OPENSSL_NO_RSA
358 /* We know that the "PKCS1_SSLeay()" functions hook properly
359 * to the nuron-specific mod_exp and mod_exp_crt so we use
360 * those functions. NB: We don't use ENGINE_openssl() or
361 * anything "more generic" because something like the RSAref
362 * code may not hook properly, and if you own one of these
363 * cards then you have the right to do RSA operations on it
365 meth1=RSA_PKCS1_SSLeay();
366 nuron_rsa.rsa_pub_enc=meth1->rsa_pub_enc;
367 nuron_rsa.rsa_pub_dec=meth1->rsa_pub_dec;
368 nuron_rsa.rsa_priv_enc=meth1->rsa_priv_enc;
369 nuron_rsa.rsa_priv_dec=meth1->rsa_priv_dec;
372 #ifndef OPENSSL_NO_DSA
373 /* Use the DSA_OpenSSL() method and just hook the mod_exp-ish
376 nuron_dsa.dsa_do_sign=meth2->dsa_do_sign;
377 nuron_dsa.dsa_sign_setup=meth2->dsa_sign_setup;
378 nuron_dsa.dsa_do_verify=meth2->dsa_do_verify;
381 #ifndef OPENSSL_NO_DH
382 /* Much the same for Diffie-Hellman */
384 nuron_dh.generate_key=meth3->generate_key;
385 nuron_dh.compute_key=meth3->compute_key;
388 /* Ensure the nuron error handling is set up */
389 ERR_load_NURON_strings();
393 #ifdef OPENSSL_NO_DYNAMIC_ENGINE
394 static ENGINE *engine_nuron(void)
396 ENGINE *ret = ENGINE_new();
399 if(!bind_helper(ret))
407 void ENGINE_load_nuron(void)
409 /* Copied from eng_[openssl|dyn].c */
410 ENGINE *toadd = engine_nuron();
418 /* This stuff is needed if this ENGINE is being compiled into a self-contained
420 #ifndef OPENSSL_NO_DYNAMIC_ENGINE
421 static int bind_fn(ENGINE *e, const char *id)
423 if(id && (strcmp(id, engine_nuron_id) != 0))
429 IMPLEMENT_DYNAMIC_CHECK_FN()
430 IMPLEMENT_DYNAMIC_BIND_FN(bind_fn)
431 #endif /* OPENSSL_NO_DYNAMIC_ENGINE */
433 #endif /* !OPENSSL_NO_HW_NURON */
434 #endif /* !OPENSSL_NO_HW */