crypto/engine/hw_ubsec.c

   1 /* crypto/engine/hw_ubsec.c */
   2 /* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
   3  * project 2000.
   4  *
   5  * Cloned shamelessly by Joe Tardo.
   6  */
   7 /* ====================================================================
   8  * Copyright (c) 1999-2001 The OpenSSL Project.  All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  *
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  *
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in
  19  *    the documentation and/or other materials provided with the
  20  *    distribution.
  21  *
  22  * 3. All advertising materials mentioning features or use of this
  23  *    software must display the following acknowledgment:
  24  *    "This product includes software developed by the OpenSSL Project
  25  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  26  *
  27  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  28  *    endorse or promote products derived from this software without
  29  *    prior written permission. For written permission, please contact
  30  *    licensing@OpenSSL.org.
  31  *
  32  * 5. Products derived from this software may not be called "OpenSSL"
  33  *    nor may "OpenSSL" appear in their names without prior written
  34  *    permission of the OpenSSL Project.
  35  *
  36  * 6. Redistributions of any form whatsoever must retain the following
  37  *    acknowledgment:
  38  *    "This product includes software developed by the OpenSSL Project
  39  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  42  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  44  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  45  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  46  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  47  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  48  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  49  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  50  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  51  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  52  * OF THE POSSIBILITY OF SUCH DAMAGE.
  53  * ====================================================================
  54  *
  55  * This product includes cryptographic software written by Eric Young
  56  * (eay@cryptsoft.com).  This product includes software written by Tim
  57  * Hudson (tjh@cryptsoft.com).
  58  *
  59  */
  60
  61 #include <stdio.h>
  62 #include <openssl/crypto.h>
  63 #include "cryptlib.h"
  64 #include <openssl/dso.h>
  65 #include <openssl/engine.h>
  66
  67 #ifndef OPENSSL_NO_HW
  68 #ifndef OPENSSL_NO_HW_UBSEC
  69
  70 #ifdef FLAT_INC
  71 #include "hw_ubsec.h"
  72 #else
  73 #include "vendor_defns/hw_ubsec.h"
  74 #endif
  75
  76 static int ubsec_destroy(ENGINE *e);
  77 static int ubsec_init(ENGINE *e);
  78 static int ubsec_finish(ENGINE *e);
  79 static int ubsec_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)());
  80 static int ubsec_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
  81                 const BIGNUM *m, BN_CTX *ctx);
  82 static int ubsec_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
  83                         const BIGNUM *q, const BIGNUM *dp,
  84                         const BIGNUM *dq, const BIGNUM *qinv, BN_CTX *ctx);
  85 #ifndef OPENSSL_NO_RSA
  86 static int ubsec_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa);
  87 #endif
  88 static int ubsec_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
  89                 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
  90 #ifndef OPENSSL_NO_DSA
  91 #if NOT_USED
  92 static int ubsec_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1,
  93                 BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m,
  94                 BN_CTX *ctx, BN_MONT_CTX *in_mont);
  95 static int ubsec_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a,
  96                 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
  97                 BN_MONT_CTX *m_ctx);
  98 #endif
  99 static DSA_SIG *ubsec_dsa_do_sign(const unsigned char *dgst, int dlen, DSA *dsa);
 100 static int ubsec_dsa_verify(const unsigned char *dgst, int dgst_len,
 101                                 DSA_SIG *sig, DSA *dsa);
 102 #endif
 103 #ifndef OPENSSL_NO_DH
 104 static int ubsec_mod_exp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a,
 105                 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
 106                 BN_MONT_CTX *m_ctx);
 107 static int ubsec_dh_compute_key(unsigned char *key,const BIGNUM *pub_key,DH *dh);
 108 static int ubsec_dh_generate_key(DH *dh);
 109 #endif
 110
 111 #if NOT_USED
 112 static int ubsec_rand_bytes(unsigned char *buf, int num);
 113 static int ubsec_rand_status(void);
 114 #endif
 115
 116 #define UBSEC_CMD_SO_PATH               ENGINE_CMD_BASE
 117 static const ENGINE_CMD_DEFN ubsec_cmd_defns[] = {
 118         {UBSEC_CMD_SO_PATH,
 119                 "SO_PATH",
 120                 "Specifies the path to the 'ubsec' shared library",
 121                 ENGINE_CMD_FLAG_STRING},
 122         {0, NULL, NULL, 0}
 123         };
 124
 125 #ifndef OPENSSL_NO_RSA
 126 /* Our internal RSA_METHOD that we provide pointers to */
 127 static RSA_METHOD ubsec_rsa =
 128         {
 129         "UBSEC RSA method",
 130         NULL,
 131         NULL,
 132         NULL,
 133         NULL,
 134         ubsec_rsa_mod_exp,
 135         ubsec_mod_exp_mont,
 136         NULL,
 137         NULL,
 138         0,
 139         NULL,
 140         NULL,
 141         NULL
 142         };
 143 #endif
 144
 145 #ifndef OPENSSL_NO_DSA
 146 /* Our internal DSA_METHOD that we provide pointers to */
 147 static DSA_METHOD ubsec_dsa =
 148         {
 149         "UBSEC DSA method",
 150         ubsec_dsa_do_sign, /* dsa_do_sign */
 151         NULL, /* dsa_sign_setup */
 152         ubsec_dsa_verify, /* dsa_do_verify */
 153         NULL, /* ubsec_dsa_mod_exp */ /* dsa_mod_exp */
 154         NULL, /* ubsec_mod_exp_dsa */ /* bn_mod_exp */
 155         NULL, /* init */
 156         NULL, /* finish */
 157         0, /* flags */
 158         NULL /* app_data */
 159         };
 160 #endif
 161
 162 #ifndef OPENSSL_NO_DH
 163 /* Our internal DH_METHOD that we provide pointers to */
 164 static DH_METHOD ubsec_dh =
 165         {
 166         "UBSEC DH method",
 167         ubsec_dh_generate_key,
 168         ubsec_dh_compute_key,
 169         ubsec_mod_exp_dh,
 170         NULL,
 171         NULL,
 172         0,
 173         NULL
 174         };
 175 #endif
 176
 177 #ifndef OPENSSL_NO_ERR
 178 /* Error function codes for use in ubsec operation */
 179 #define UBSEC_F_UBSEC_INIT                      100
 180 #define UBSEC_F_UBSEC_FINISH                    101
 181 #define UBSEC_F_UBSEC_CTRL                      102
 182 #define UBSEC_F_UBSEC_MOD_EXP                   103
 183 #define UBSEC_F_UBSEC_RSA_MOD_EXP               104
 184 #define UBSEC_F_UBSEC_RSA_MOD_EXP_CRT           105
 185 #define UBSEC_F_UBSEC_DSA_SIGN                  106
 186 #define UBSEC_F_UBSEC_DSA_VERIFY                107
 187 /* Error reason codes */
 188 #define UBSEC_R_ALREADY_LOADED                  108
 189 #define UBSEC_R_DSO_FAILURE                     109
 190 #define UBSEC_R_UNIT_FAILURE                    110
 191 #define UBSEC_R_NOT_LOADED                      111
 192 #define UBSEC_R_CTRL_COMMAND_NOT_IMPLEMENTED    112
 193 #define UBSEC_R_SIZE_TOO_LARGE_OR_TOO_SMALL     113
 194 #define UBSEC_R_BN_EXPAND_FAIL                  114
 195 #define UBSEC_R_REQUEST_FAILED                  115
 196 #define UBSEC_R_MISSING_KEY_COMPONENTS          116
 197 static ERR_STRING_DATA ubsec_str_functs[] =
 198         {
 199         /* This first element is changed to match the dynamic 'lib' number */
 200 {ERR_PACK(0,0,0),                               "ubsec engine code"},
 201 {ERR_PACK(0,UBSEC_F_UBSEC_INIT,0),              "ubsec_init"},
 202 {ERR_PACK(0,UBSEC_F_UBSEC_FINISH,0),            "ubsec_finish"},
 203 {ERR_PACK(0,UBSEC_F_UBSEC_CTRL,0),              "ubsec_ctrl"},
 204 {ERR_PACK(0,UBSEC_F_UBSEC_MOD_EXP,0),           "ubsec_mod_exp"},
 205 {ERR_PACK(0,UBSEC_F_UBSEC_RSA_MOD_EXP,0),       "ubsec_rsa_mod_exp"},
 206 {ERR_PACK(0,UBSEC_F_UBSEC_RSA_MOD_EXP_CRT,0),   "ubsec_rsa_mod_exp_crt"},
 207 {ERR_PACK(0,UBSEC_F_UBSEC_DSA_SIGN,0),          "ubsec_dsa_sign"},
 208 {ERR_PACK(0,UBSEC_F_UBSEC_DSA_VERIFY,0),        "ubsec_dsa_verify"},
 209 /* Error reason codes */
 210 {UBSEC_R_ALREADY_LOADED                 ,"already loaded"},
 211 {UBSEC_R_DSO_FAILURE                    ,"DSO failure"},
 212 {UBSEC_R_UNIT_FAILURE                   ,"unit failure"},
 213 {UBSEC_R_NOT_LOADED                     ,"not loaded"},
 214 {UBSEC_R_CTRL_COMMAND_NOT_IMPLEMENTED   ,"ctrl command not implemented"},
 215 {UBSEC_R_SIZE_TOO_LARGE_OR_TOO_SMALL    ,"size too large or too small"},
 216 {UBSEC_R_BN_EXPAND_FAIL                 ,"bn_expand fail"},
 217 {UBSEC_R_REQUEST_FAILED                 ,"request failed"},
 218 {UBSEC_R_MISSING_KEY_COMPONENTS         ,"missing key components"},
 219 {0,NULL}
 220         };
 221 /* The library number we obtain dynamically from the ERR code */
 222 static int ubsec_err_lib = -1;
 223 #define UBSECerr(f,r) ERR_PUT_error(ubsec_err_lib,(f),(r),__FILE__,__LINE__)
 224 static void ubsec_load_error_strings(void)
 225         {
 226         if(ubsec_err_lib < 0)
 227                 {
 228                 if((ubsec_err_lib = ERR_get_next_error_library()) <= 0)
 229                         return;
 230                 ubsec_str_functs[0].error = ERR_PACK(ubsec_err_lib,0,0);
 231                 ERR_load_strings(ubsec_err_lib, ubsec_str_functs);
 232                 }
 233         }
 234 static void ubsec_unload_error_strings(void)
 235         {
 236         if(ubsec_err_lib >= 0)
 237                 {
 238                 ERR_unload_strings(ubsec_err_lib, ubsec_str_functs);
 239                 ubsec_err_lib = -1;
 240                 }
 241         }
 242 #else
 243 #define UBSECerr(f,r)                                   /* NOP */
 244 static void ubsec_load_error_strings(void) { }          /* NOP */
 245 static void ubsec_unload_error_strings(void) { }        /* NOP */
 246 #endif
 247
 248 /* Constants used when creating the ENGINE */
 249 static const char *engine_ubsec_id = "ubsec";
 250 static const char *engine_ubsec_name = "UBSEC hardware engine support";
 251
 252 /* This internal function is used by ENGINE_ubsec() and possibly by the
 253  * "dynamic" ENGINE support too */
 254 static int bind_helper(ENGINE *e)
 255         {
 256 #ifndef OPENSSL_NO_RSA
 257         const RSA_METHOD *meth1;
 258 #endif
 259 #ifndef OPENSSL_NO_DH
 260 #ifndef HAVE_UBSEC_DH
 261         const DH_METHOD *meth3;
 262 #endif /* HAVE_UBSEC_DH */
 263 #endif
 264         if(!ENGINE_set_id(e, engine_ubsec_id) ||
 265                         !ENGINE_set_name(e, engine_ubsec_name) ||
 266 #ifndef OPENSSL_NO_RSA
 267                         !ENGINE_set_RSA(e, &ubsec_rsa) ||
 268 #endif
 269 #ifndef OPENSSL_NO_DSA
 270                         !ENGINE_set_DSA(e, &ubsec_dsa) ||
 271 #endif
 272 #ifndef OPENSSL_NO_DH
 273                         !ENGINE_set_DH(e, &ubsec_dh) ||
 274 #endif
 275                         !ENGINE_set_BN_mod_exp(e, ubsec_mod_exp) ||
 276                         !ENGINE_set_BN_mod_exp_crt(e, ubsec_mod_exp_crt) ||
 277                         !ENGINE_set_destroy_function(e, ubsec_destroy) ||
 278                         !ENGINE_set_init_function(e, ubsec_init) ||
 279                         !ENGINE_set_finish_function(e, ubsec_finish) ||
 280                         !ENGINE_set_ctrl_function(e, ubsec_ctrl) ||
 281                         !ENGINE_set_cmd_defns(e, ubsec_cmd_defns))
 282                 return 0;
 283
 284 #ifndef OPENSSL_NO_RSA
 285         /* We know that the "PKCS1_SSLeay()" functions hook properly
 286          * to the Broadcom-specific mod_exp and mod_exp_crt so we use
 287          * those functions. NB: We don't use ENGINE_openssl() or
 288          * anything "more generic" because something like the RSAref
 289          * code may not hook properly, and if you own one of these
 290          * cards then you have the right to do RSA operations on it
 291          * anyway! */
 292         meth1 = RSA_PKCS1_SSLeay();
 293         ubsec_rsa.rsa_pub_enc = meth1->rsa_pub_enc;
 294         ubsec_rsa.rsa_pub_dec = meth1->rsa_pub_dec;
 295         ubsec_rsa.rsa_priv_enc = meth1->rsa_priv_enc;
 296         ubsec_rsa.rsa_priv_dec = meth1->rsa_priv_dec;
 297 #endif
 298
 299 #ifndef OPENSSL_NO_DH
 300 #ifndef HAVE_UBSEC_DH
 301         /* Much the same for Diffie-Hellman */
 302         meth3 = DH_OpenSSL();
 303         ubsec_dh.generate_key = meth3->generate_key;
 304         ubsec_dh.compute_key = meth3->compute_key;
 305 #endif /* HAVE_UBSEC_DH */
 306 #endif
 307
 308         /* Ensure the ubsec error handling is set up */
 309         ubsec_load_error_strings();
 310         return 1;
 311         }
 312
 313 /* As this is only ever called once, there's no need for locking
 314  * (indeed - the lock will already be held by our caller!!!) */
 315 ENGINE *ENGINE_ubsec(void)
 316         {
 317         ENGINE *ret = ENGINE_new();
 318         if(!ret)
 319                 return NULL;
 320         if(!bind_helper(ret))
 321                 {
 322                 ENGINE_free(ret);
 323                 return NULL;
 324                 }
 325         return ret;
 326         }
 327
 328 /* This is a process-global DSO handle used for loading and unloading
 329  * the UBSEC library. NB: This is only set (or unset) during an
 330  * init() or finish() call (reference counts permitting) and they're
 331  * operating with global locks, so this should be thread-safe
 332  * implicitly. */
 333
 334 static DSO *ubsec_dso = NULL;
 335
 336 /* These are the function pointers that are (un)set when the library has
 337  * successfully (un)loaded. */
 338
 339 static t_UBSEC_ubsec_bytes_to_bits *p_UBSEC_ubsec_bytes_to_bits = NULL;
 340 static t_UBSEC_ubsec_bits_to_bytes *p_UBSEC_ubsec_bits_to_bytes = NULL;
 341 static t_UBSEC_ubsec_open *p_UBSEC_ubsec_open = NULL;
 342 static t_UBSEC_ubsec_close *p_UBSEC_ubsec_close = NULL;
 343 #ifndef OPENSSL_NO_DH
 344 static t_UBSEC_diffie_hellman_generate_ioctl
 345         *p_UBSEC_diffie_hellman_generate_ioctl = NULL;
 346 static t_UBSEC_diffie_hellman_agree_ioctl *p_UBSEC_diffie_hellman_agree_ioctl = NULL;
 347 #endif
 348 /* #ifndef OPENSSL_NO_RSA */
 349 static t_UBSEC_rsa_mod_exp_ioctl *p_UBSEC_rsa_mod_exp_ioctl = NULL;
 350 static t_UBSEC_rsa_mod_exp_crt_ioctl *p_UBSEC_rsa_mod_exp_crt_ioctl = NULL;
 351 /* #endif */
 352 #ifndef OPENSSL_NO_DSA
 353 static t_UBSEC_dsa_sign_ioctl *p_UBSEC_dsa_sign_ioctl = NULL;
 354 static t_UBSEC_dsa_verify_ioctl *p_UBSEC_dsa_verify_ioctl = NULL;
 355 #endif
 356 static t_UBSEC_math_accelerate_ioctl *p_UBSEC_math_accelerate_ioctl = NULL;
 357 static t_UBSEC_rng_ioctl *p_UBSEC_rng_ioctl = NULL;
 358
 359 /*
 360  * These are the static string constants for the DSO file name and the function
 361  * symbol names to bind to.
 362  */
 363
 364 static const char *UBSEC_LIBNAME = "ubsec";
 365 static const char *UBSEC_F1 = "ubsec_bytes_to_bits";
 366 static const char *UBSEC_F2 = "ubsec_bits_to_bytes";
 367 static const char *UBSEC_F3 = "ubsec_open";
 368 static const char *UBSEC_F4 = "ubsec_close";
 369 #ifndef OPENSSL_NO_DH
 370 static const char *UBSEC_F5 = "diffie_hellman_generate_ioctl";
 371 static const char *UBSEC_F6 = "diffie_hellman_agree_ioctl";
 372 #endif
 373 /* #ifndef OPENSSL_NO_RSA */
 374 static const char *UBSEC_F7 = "rsa_mod_exp_ioctl";
 375 static const char *UBSEC_F8 = "rsa_mod_exp_crt_ioctl";
 376 /* #endif */
 377 #ifndef OPENSSL_NO_DSA
 378 static const char *UBSEC_F9 = "dsa_sign_ioctl";
 379 static const char *UBSEC_F10 = "dsa_verify_ioctl";
 380 #endif
 381 static const char *UBSEC_F11 = "math_accelerate_ioctl";
 382 static const char *UBSEC_F12 = "rng_ioctl";
 383
 384 /* Destructor (complements the "ENGINE_ubsec()" constructor) */
 385 static int ubsec_destroy(ENGINE *e)
 386         {
 387         ubsec_unload_error_strings();
 388         return 1;
 389         }
 390
 391 /* (de)initialisation functions. */
 392 static int ubsec_init(ENGINE *e)
 393         {
 394         t_UBSEC_ubsec_bytes_to_bits *p1;
 395         t_UBSEC_ubsec_bits_to_bytes *p2;
 396         t_UBSEC_ubsec_open *p3;
 397         t_UBSEC_ubsec_close *p4;
 398 #ifndef OPENSSL_NO_DH
 399         t_UBSEC_diffie_hellman_generate_ioctl *p5;
 400         t_UBSEC_diffie_hellman_agree_ioctl *p6;
 401 #endif
 402 /* #ifndef OPENSSL_NO_RSA */
 403         t_UBSEC_rsa_mod_exp_ioctl *p7;
 404         t_UBSEC_rsa_mod_exp_crt_ioctl *p8;
 405 /* #endif */
 406 #ifndef OPENSSL_NO_DSA
 407         t_UBSEC_dsa_sign_ioctl *p9;
 408         t_UBSEC_dsa_verify_ioctl *p10;
 409 #endif
 410         t_UBSEC_math_accelerate_ioctl *p11;
 411         t_UBSEC_rng_ioctl *p12;
 412         int fd = 0;
 413
 414         if(ubsec_dso != NULL)
 415                 {
 416                 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_ALREADY_LOADED);
 417                 goto err;
 418                 }
 419         /*
 420          * Attempt to load libubsec.so/ubsec.dll/whatever.
 421          */
 422         ubsec_dso = DSO_load(NULL, UBSEC_LIBNAME, NULL, 0);
 423         if(ubsec_dso == NULL)
 424                 {
 425                 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_DSO_FAILURE);
 426                 goto err;
 427                 }
 428
 429         if (
 430         !(p1 = (t_UBSEC_ubsec_bytes_to_bits *) DSO_bind_func(ubsec_dso, UBSEC_F1)) ||
 431         !(p2 = (t_UBSEC_ubsec_bits_to_bytes *) DSO_bind_func(ubsec_dso, UBSEC_F2)) ||
 432         !(p3 = (t_UBSEC_ubsec_open *) DSO_bind_func(ubsec_dso, UBSEC_F3)) ||
 433         !(p4 = (t_UBSEC_ubsec_close *) DSO_bind_func(ubsec_dso, UBSEC_F4)) ||
 434 #ifndef OPENSSL_NO_DH
 435         !(p5 = (t_UBSEC_diffie_hellman_generate_ioctl *)
 436                                 DSO_bind_func(ubsec_dso, UBSEC_F5)) ||
 437         !(p6 = (t_UBSEC_diffie_hellman_agree_ioctl *)
 438                                 DSO_bind_func(ubsec_dso, UBSEC_F6)) ||
 439 #endif
 440 /* #ifndef OPENSSL_NO_RSA */
 441         !(p7 = (t_UBSEC_rsa_mod_exp_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F7)) ||
 442         !(p8 = (t_UBSEC_rsa_mod_exp_crt_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F8)) ||
 443 /* #endif */
 444 #ifndef OPENSSL_NO_DSA
 445         !(p9 = (t_UBSEC_dsa_sign_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F9)) ||
 446         !(p10 = (t_UBSEC_dsa_verify_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F10)) ||
 447 #endif
 448         !(p11 = (t_UBSEC_math_accelerate_ioctl *)
 449                                 DSO_bind_func(ubsec_dso, UBSEC_F11)) ||
 450         !(p12 = (t_UBSEC_rng_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F12)))
 451                 {
 452                 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_DSO_FAILURE);
 453                 goto err;
 454                 }
 455
 456         /* Copy the pointers */
 457         p_UBSEC_ubsec_bytes_to_bits = p1;
 458         p_UBSEC_ubsec_bits_to_bytes = p2;
 459         p_UBSEC_ubsec_open = p3;
 460         p_UBSEC_ubsec_close = p4;
 461 #ifndef OPENSSL_NO_DH
 462         p_UBSEC_diffie_hellman_generate_ioctl = p5;
 463         p_UBSEC_diffie_hellman_agree_ioctl = p6;
 464 #endif
 465 #ifndef OPENSSL_NO_RSA
 466         p_UBSEC_rsa_mod_exp_ioctl = p7;
 467         p_UBSEC_rsa_mod_exp_crt_ioctl = p8;
 468 #endif
 469 #ifndef OPENSSL_NO_DSA
 470         p_UBSEC_dsa_sign_ioctl = p9;
 471         p_UBSEC_dsa_verify_ioctl = p10;
 472 #endif
 473         p_UBSEC_math_accelerate_ioctl = p11;
 474         p_UBSEC_rng_ioctl = p12;
 475
 476         /* Perform an open to see if there's actually any unit running. */
 477         if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) > 0)
 478                 {
 479                 p_UBSEC_ubsec_close(fd);
 480                 return 1;
 481                 }
 482         else
 483                 {
 484                 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
 485                 }
 486
 487 err:
 488         if(ubsec_dso)
 489                 DSO_free(ubsec_dso);
 490         p_UBSEC_ubsec_bytes_to_bits = NULL;
 491         p_UBSEC_ubsec_bits_to_bytes = NULL;
 492         p_UBSEC_ubsec_open = NULL;
 493         p_UBSEC_ubsec_close = NULL;
 494 #ifndef OPENSSL_NO_DH
 495         p_UBSEC_diffie_hellman_generate_ioctl = NULL;
 496         p_UBSEC_diffie_hellman_agree_ioctl = NULL;
 497 #endif
 498 #ifndef OPENSSL_NO_RSA
 499         p_UBSEC_rsa_mod_exp_ioctl = NULL;
 500         p_UBSEC_rsa_mod_exp_crt_ioctl = NULL;
 501 #endif
 502 #ifndef OPENSSL_NO_DSA
 503         p_UBSEC_dsa_sign_ioctl = NULL;
 504         p_UBSEC_dsa_verify_ioctl = NULL;
 505 #endif
 506         p_UBSEC_math_accelerate_ioctl = NULL;
 507         p_UBSEC_rng_ioctl = NULL;
 508
 509         return 0;
 510         }
 511
 512 static int ubsec_finish(ENGINE *e)
 513         {
 514         if(ubsec_dso == NULL)
 515                 {
 516                 UBSECerr(UBSEC_F_UBSEC_FINISH, UBSEC_R_NOT_LOADED);
 517                 return 0;
 518                 }
 519         if(!DSO_free(ubsec_dso))
 520                 {
 521                 UBSECerr(UBSEC_F_UBSEC_FINISH, UBSEC_R_DSO_FAILURE);
 522                 return 0;
 523                 }
 524         ubsec_dso = NULL;
 525         p_UBSEC_ubsec_bytes_to_bits = NULL;
 526         p_UBSEC_ubsec_bits_to_bytes = NULL;
 527         p_UBSEC_ubsec_open = NULL;
 528         p_UBSEC_ubsec_close = NULL;
 529 #ifndef OPENSSL_NO_DH
 530         p_UBSEC_diffie_hellman_generate_ioctl = NULL;
 531         p_UBSEC_diffie_hellman_agree_ioctl = NULL;
 532 #endif
 533 #ifndef OPENSSL_NO_RSA
 534         p_UBSEC_rsa_mod_exp_ioctl = NULL;
 535         p_UBSEC_rsa_mod_exp_crt_ioctl = NULL;
 536 #endif
 537 #ifndef OPENSSL_NO_DSA
 538         p_UBSEC_dsa_sign_ioctl = NULL;
 539         p_UBSEC_dsa_verify_ioctl = NULL;
 540 #endif
 541         p_UBSEC_math_accelerate_ioctl = NULL;
 542         p_UBSEC_rng_ioctl = NULL;
 543         return 1;
 544         }
 545
 546 static int ubsec_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)())
 547         {
 548         int initialised = ((ubsec_dso == NULL) ? 0 : 1);
 549         switch(cmd)
 550                 {
 551         case UBSEC_CMD_SO_PATH:
 552                 if(p == NULL)
 553                         {
 554                         UBSECerr(UBSEC_F_UBSEC_CTRL,ERR_R_PASSED_NULL_PARAMETER);
 555                         return 0;
 556                         }
 557                 if(initialised)
 558                         {
 559                         UBSECerr(UBSEC_F_UBSEC_CTRL,UBSEC_R_ALREADY_LOADED);
 560                         return 0;
 561                         }
 562                 UBSEC_LIBNAME = (const char *)p;
 563                 return 1;
 564         default:
 565                 break;
 566                 }
 567         UBSECerr(UBSEC_F_UBSEC_CTRL,UBSEC_R_CTRL_COMMAND_NOT_IMPLEMENTED);
 568         return 0;
 569         }
 570
 571 static int ubsec_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
 572                 const BIGNUM *m, BN_CTX *ctx)
 573         {
 574         int     y_len = 0;
 575         int     fd;
 576
 577         if(ubsec_dso == NULL)
 578         {
 579                 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_NOT_LOADED);
 580                 return 0;
 581         }
 582
 583         /* Check if hardware can't handle this argument. */
 584         y_len = BN_num_bits(m);
 585         if (y_len > 1024) {
 586                 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_SIZE_TOO_LARGE_OR_TOO_SMALL);
 587                 return 0;
 588         }
 589
 590         if(!bn_wexpand(r, m->top))
 591         {
 592                 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_BN_EXPAND_FAIL);
 593                 return 0;
 594         }
 595         memset(r->d, 0, BN_num_bytes(m));
 596
 597         if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
 598                 fd = 0;
 599                 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
 600                 return 0;
 601         }
 602
 603         if (p_UBSEC_rsa_mod_exp_ioctl(fd, (unsigned char *)a->d, BN_num_bits(a),
 604                 (unsigned char *)m->d, BN_num_bits(m), (unsigned char *)p->d,
 605                 BN_num_bits(p), (unsigned char *)r->d, &y_len) != 0)
 606         {
 607                 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_REQUEST_FAILED);
 608                 return 0;
 609         }
 610
 611         p_UBSEC_ubsec_close(fd);
 612
 613         r->top = (BN_num_bits(m)+BN_BITS2-1)/BN_BITS2;
 614         return 1;
 615         }
 616
 617 #ifndef OPENSSL_NO_RSA
 618 static int ubsec_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa)
 619         {
 620         BN_CTX *ctx;
 621         int to_return = 0;
 622
 623         if((ctx = BN_CTX_new()) == NULL)
 624                 goto err;
 625
 626         if(!rsa->p || !rsa->q || !rsa->dmp1 || !rsa->dmq1 || !rsa->iqmp)
 627                 {
 628                 UBSECerr(UBSEC_F_UBSEC_RSA_MOD_EXP, UBSEC_R_MISSING_KEY_COMPONENTS);
 629                 goto err;
 630                 }
 631
 632         /*
 633          * Do in software if argument is too large for hardware.
 634          */
 635         if ((BN_num_bits(rsa->p)+BN_num_bits(rsa->q)) > 1024) {
 636                 const RSA_METHOD *meth = RSA_PKCS1_SSLeay();
 637                 to_return = (*meth->rsa_mod_exp)(r0, I, rsa);
 638         } else {
 639                 to_return = ubsec_mod_exp_crt(r0, I, rsa->p, rsa->q, rsa->dmp1,
 640                         rsa->dmq1, rsa->iqmp, ctx);
 641         }
 642 err:
 643         if(ctx)
 644                 BN_CTX_free(ctx);
 645         return to_return;
 646         }
 647 #endif
 648
 649 static int ubsec_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
 650                         const BIGNUM *q, const BIGNUM *dp,
 651                         const BIGNUM *dq, const BIGNUM *qinv, BN_CTX *ctx)
 652         {
 653         int     y_len,
 654                 m_len,
 655                 fd;
 656
 657         m_len = BN_num_bytes(p) + BN_num_bytes(q) + 1;
 658         y_len = BN_num_bits(p) + BN_num_bits(q);
 659
 660         /* Check if hardware can't handle this argument. */
 661         if (y_len > 1024) {
 662                 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_SIZE_TOO_LARGE_OR_TOO_SMALL);
 663                 return 0;
 664         }
 665
 666         if (!bn_wexpand(r, p->top + q->top + 1)) {
 667                 UBSECerr(UBSEC_F_UBSEC_RSA_MOD_EXP_CRT, UBSEC_R_BN_EXPAND_FAIL);
 668                 return 0;
 669         }
 670
 671         if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
 672                 fd = 0;
 673                 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
 674                 return 0;
 675         }
 676
 677         if (p_UBSEC_rsa_mod_exp_crt_ioctl(fd,
 678                 (unsigned char *)a->d, BN_num_bits(a),
 679                 (unsigned char *)qinv->d, BN_num_bits(qinv),
 680                 (unsigned char *)dp->d, BN_num_bits(dp),
 681                 (unsigned char *)p->d, BN_num_bits(p),
 682                 (unsigned char *)dq->d, BN_num_bits(dq),
 683                 (unsigned char *)q->d, BN_num_bits(q),
 684                 (unsigned char *)r->d,  &y_len) != 0) {
 685                 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_REQUEST_FAILED);
 686                 return 0;
 687         }
 688
 689         p_UBSEC_ubsec_close(fd);
 690
 691         r->top = (BN_num_bits(p) + BN_num_bits(q) + BN_BITS2 - 1)/BN_BITS2;
 692         return 1;
 693 }
 694
 695 #ifndef OPENSSL_NO_DSA
 696 #if NOT_USED
 697 static int ubsec_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1,
 698                 BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m,
 699                 BN_CTX *ctx, BN_MONT_CTX *in_mont)
 700         {
 701         BIGNUM t;
 702         int to_return = 0;
 703
 704         BN_init(&t);
 705         /* let rr = a1 ^ p1 mod m */
 706         if (!ubsec_mod_exp(rr,a1,p1,m,ctx)) goto end;
 707         /* let t = a2 ^ p2 mod m */
 708         if (!ubsec_mod_exp(&t,a2,p2,m,ctx)) goto end;
 709         /* let rr = rr * t mod m */
 710         if (!BN_mod_mul(rr,rr,&t,m,ctx)) goto end;
 711         to_return = 1;
 712 end:
 713         BN_free(&t);
 714         return to_return;
 715         }
 716
 717 static int ubsec_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a,
 718                 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
 719                 BN_MONT_CTX *m_ctx)
 720         {
 721         return ubsec_mod_exp(r, a, p, m, ctx);
 722         }
 723 #endif
 724 #endif
 725
 726 /*
 727  * This function is aliased to mod_exp (with the mont stuff dropped).
 728  */
 729 static int ubsec_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
 730                 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
 731         {
 732         int ret = 0;
 733
 734 #ifndef OPENSSL_NO_RSA
 735         /* Do in software if the key is too large for the hardware. */
 736         if (BN_num_bits(m) > 1024)
 737                 {
 738                 const RSA_METHOD *meth = RSA_PKCS1_SSLeay();
 739                 ret = (*meth->bn_mod_exp)(r, a, p, m, ctx, m_ctx);
 740                 }
 741         else
 742 #endif
 743                 {
 744                 ret = ubsec_mod_exp(r, a, p, m, ctx);
 745                 }
 746
 747         return ret;
 748         }
 749
 750 #ifndef OPENSSL_NO_DH
 751 /* This function is aliased to mod_exp (with the dh and mont dropped). */
 752 static int ubsec_mod_exp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a,
 753                 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
 754                 BN_MONT_CTX *m_ctx)
 755         {
 756         return ubsec_mod_exp(r, a, p, m, ctx);
 757         }
 758 #endif
 759
 760 #ifndef OPENSSL_NO_DSA
 761 static DSA_SIG *ubsec_dsa_do_sign(const unsigned char *dgst, int dlen, DSA *dsa)
 762         {
 763         DSA_SIG *to_return = NULL;
 764         int s_len = 160, r_len = 160, d_len, fd;
 765         BIGNUM m, *r=NULL, *s=NULL;
 766
 767         BN_init(&m);
 768
 769         s = BN_new();
 770         r = BN_new();
 771         if ((s == NULL) || (r==NULL))
 772                 goto err;
 773
 774         d_len = p_UBSEC_ubsec_bytes_to_bits((unsigned char *)dgst, dlen);
 775
 776         if(!bn_wexpand(r, (160+BN_BITS2-1)/BN_BITS2) ||
 777            (!bn_wexpand(s, (160+BN_BITS2-1)/BN_BITS2))) {
 778                 UBSECerr(UBSEC_F_UBSEC_DSA_SIGN, UBSEC_R_BN_EXPAND_FAIL);
 779                 goto err;
 780         }
 781
 782         if (BN_bin2bn(dgst,dlen,&m) == NULL) {
 783                 UBSECerr(UBSEC_F_UBSEC_DSA_SIGN, UBSEC_R_BN_EXPAND_FAIL);
 784                 goto err;
 785         }
 786
 787         if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
 788                 fd = 0;
 789                 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
 790                 return 0;
 791         }
 792
 793         if (p_UBSEC_dsa_sign_ioctl(fd, 0, /* compute hash before signing */
 794                 (unsigned char *)dgst, d_len,
 795                 NULL, 0,  /* compute random value */
 796                 (unsigned char *)dsa->p->d, BN_num_bits(dsa->p),
 797                 (unsigned char *)dsa->q->d, BN_num_bits(dsa->q),
 798                 (unsigned char *)dsa->g->d, BN_num_bits(dsa->g),
 799                 (unsigned char *)dsa->priv_key->d, BN_num_bits(dsa->priv_key),
 800                 (unsigned char *)r->d, &r_len,
 801                 (unsigned char *)s->d, &s_len ) != 0) {
 802                 UBSECerr(UBSEC_F_UBSEC_DSA_SIGN, UBSEC_R_REQUEST_FAILED);
 803                 goto err;
 804         }
 805
 806         p_UBSEC_ubsec_close(fd);
 807
 808         r->top = (160+BN_BITS2-1)/BN_BITS2;
 809         s->top = (160+BN_BITS2-1)/BN_BITS2;
 810
 811         to_return = DSA_SIG_new();
 812         if(to_return == NULL) {
 813                 UBSECerr(UBSEC_F_UBSEC_DSA_SIGN, UBSEC_R_BN_EXPAND_FAIL);
 814                 goto err;
 815         }
 816
 817         to_return->r = r;
 818         to_return->s = s;
 819
 820 err:
 821         if (!to_return) {
 822                 if (r) BN_free(r);
 823                 if (s) BN_free(s);
 824         }
 825         BN_clear_free(&m);
 826         return to_return;
 827 }
 828
 829 static int ubsec_dsa_verify(const unsigned char *dgst, int dgst_len,
 830                                 DSA_SIG *sig, DSA *dsa)
 831         {
 832         int v_len, d_len;
 833         int to_return = 0;
 834         int fd;
 835         BIGNUM v;
 836
 837         BN_init(&v);
 838
 839         if(!bn_wexpand(&v, dsa->p->top)) {
 840                 UBSECerr(UBSEC_F_UBSEC_DSA_VERIFY ,UBSEC_R_BN_EXPAND_FAIL);
 841                 goto err;
 842         }
 843
 844         v_len = BN_num_bits(dsa->p);
 845
 846         d_len = p_UBSEC_ubsec_bytes_to_bits((unsigned char *)dgst, dgst_len);
 847
 848         if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
 849                 fd = 0;
 850                 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
 851                 return 0;
 852         }
 853
 854         if (p_UBSEC_dsa_verify_ioctl(fd, 0, /* compute hash before signing */
 855                 (unsigned char *)dgst, d_len,
 856                 (unsigned char *)dsa->p->d, BN_num_bits(dsa->p),
 857                 (unsigned char *)dsa->q->d, BN_num_bits(dsa->q),
 858                 (unsigned char *)dsa->g->d, BN_num_bits(dsa->g),
 859                 (unsigned char *)dsa->pub_key->d, BN_num_bits(dsa->pub_key),
 860                 (unsigned char *)sig->r->d, BN_num_bits(sig->r),
 861                 (unsigned char *)sig->s->d, BN_num_bits(sig->s),
 862                 (unsigned char *)v.d, &v_len) != 0) {
 863                 UBSECerr(UBSEC_F_UBSEC_DSA_VERIFY , UBSEC_R_REQUEST_FAILED);
 864                 goto err;
 865         }
 866
 867         p_UBSEC_ubsec_close(fd);
 868
 869         to_return = 1;
 870 err:
 871         BN_clear_free(&v);
 872         return to_return;
 873         }
 874 #endif
 875
 876 #ifndef OPENSSL_NO_DH
 877 static int ubsec_dh_compute_key (unsigned char *key,const BIGNUM *pub_key,DH *dh)
 878         {
 879         return 0;
 880         }
 881
 882 static int ubsec_dh_generate_key (DH *dh)
 883         {
 884         return 0;
 885         }
 886 #endif
 887
 888 #ifdef NOT_USED
 889 static int ubsec_rand_bytes(unsigned char *buf, int num)
 890         {
 891         return 0;
 892         }
 893
 894 static int ubsec_rand_status(void)
 895         {
 896         return 0;
 897         }
 898 #endif
 899
 900 /* This stuff is needed if this ENGINE is being compiled into a self-contained
 901  * shared-library. */
 902 #ifdef ENGINE_DYNAMIC_SUPPORT
 903 static int bind_fn(ENGINE *e, const char *id)
 904         {
 905         if(id && (strcmp(id, engine_ubsec_id) != 0))
 906                 return 0;
 907         if(!bind_helper(e))
 908                 return 0;
 909         return 1;
 910         }
 911 IMPLEMENT_DYNAMIC_CHECK_FN()
 912 IMPLEMENT_DYNAMIC_BIND_FN(bind_fn)
 913 #endif /* ENGINE_DYNAMIC_SUPPORT */
 914
 915 #endif /* !OPENSSL_NO_HW_UBSEC */
 916 #endif /* !OPENSSL_NO_HW */