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_destroy_function(e, ubsec_destroy) ||
 276                         !ENGINE_set_init_function(e, ubsec_init) ||
 277                         !ENGINE_set_finish_function(e, ubsec_finish) ||
 278                         !ENGINE_set_ctrl_function(e, ubsec_ctrl) ||
 279                         !ENGINE_set_cmd_defns(e, ubsec_cmd_defns))
 280                 return 0;
 281
 282 #ifndef OPENSSL_NO_RSA
 283         /* We know that the "PKCS1_SSLeay()" functions hook properly
 284          * to the Broadcom-specific mod_exp and mod_exp_crt so we use
 285          * those functions. NB: We don't use ENGINE_openssl() or
 286          * anything "more generic" because something like the RSAref
 287          * code may not hook properly, and if you own one of these
 288          * cards then you have the right to do RSA operations on it
 289          * anyway! */
 290         meth1 = RSA_PKCS1_SSLeay();
 291         ubsec_rsa.rsa_pub_enc = meth1->rsa_pub_enc;
 292         ubsec_rsa.rsa_pub_dec = meth1->rsa_pub_dec;
 293         ubsec_rsa.rsa_priv_enc = meth1->rsa_priv_enc;
 294         ubsec_rsa.rsa_priv_dec = meth1->rsa_priv_dec;
 295 #endif
 296
 297 #ifndef OPENSSL_NO_DH
 298 #ifndef HAVE_UBSEC_DH
 299         /* Much the same for Diffie-Hellman */
 300         meth3 = DH_OpenSSL();
 301         ubsec_dh.generate_key = meth3->generate_key;
 302         ubsec_dh.compute_key = meth3->compute_key;
 303 #endif /* HAVE_UBSEC_DH */
 304 #endif
 305
 306         /* Ensure the ubsec error handling is set up */
 307         ubsec_load_error_strings();
 308         return 1;
 309         }
 310
 311 static ENGINE *engine_ubsec(void)
 312         {
 313         ENGINE *ret = ENGINE_new();
 314         if(!ret)
 315                 return NULL;
 316         if(!bind_helper(ret))
 317                 {
 318                 ENGINE_free(ret);
 319                 return NULL;
 320                 }
 321         return ret;
 322         }
 323
 324 void ENGINE_load_ubsec(void)
 325         {
 326         /* Copied from eng_[openssl|dyn].c */
 327         ENGINE *toadd = engine_ubsec();
 328         if(!toadd) return;
 329         ENGINE_add(toadd);
 330         ENGINE_free(toadd);
 331         ERR_clear_error();
 332         }
 333
 334 /* This is a process-global DSO handle used for loading and unloading
 335  * the UBSEC library. NB: This is only set (or unset) during an
 336  * init() or finish() call (reference counts permitting) and they're
 337  * operating with global locks, so this should be thread-safe
 338  * implicitly. */
 339
 340 static DSO *ubsec_dso = NULL;
 341
 342 /* These are the function pointers that are (un)set when the library has
 343  * successfully (un)loaded. */
 344
 345 static t_UBSEC_ubsec_bytes_to_bits *p_UBSEC_ubsec_bytes_to_bits = NULL;
 346 static t_UBSEC_ubsec_bits_to_bytes *p_UBSEC_ubsec_bits_to_bytes = NULL;
 347 static t_UBSEC_ubsec_open *p_UBSEC_ubsec_open = NULL;
 348 static t_UBSEC_ubsec_close *p_UBSEC_ubsec_close = NULL;
 349 #ifndef OPENSSL_NO_DH
 350 static t_UBSEC_diffie_hellman_generate_ioctl
 351         *p_UBSEC_diffie_hellman_generate_ioctl = NULL;
 352 static t_UBSEC_diffie_hellman_agree_ioctl *p_UBSEC_diffie_hellman_agree_ioctl = NULL;
 353 #endif
 354 /* #ifndef OPENSSL_NO_RSA */
 355 static t_UBSEC_rsa_mod_exp_ioctl *p_UBSEC_rsa_mod_exp_ioctl = NULL;
 356 static t_UBSEC_rsa_mod_exp_crt_ioctl *p_UBSEC_rsa_mod_exp_crt_ioctl = NULL;
 357 /* #endif */
 358 #ifndef OPENSSL_NO_DSA
 359 static t_UBSEC_dsa_sign_ioctl *p_UBSEC_dsa_sign_ioctl = NULL;
 360 static t_UBSEC_dsa_verify_ioctl *p_UBSEC_dsa_verify_ioctl = NULL;
 361 #endif
 362 static t_UBSEC_math_accelerate_ioctl *p_UBSEC_math_accelerate_ioctl = NULL;
 363 static t_UBSEC_rng_ioctl *p_UBSEC_rng_ioctl = NULL;
 364
 365 /*
 366  * These are the static string constants for the DSO file name and the function
 367  * symbol names to bind to.
 368  */
 369
 370 static const char *UBSEC_LIBNAME = "ubsec";
 371 static const char *UBSEC_F1 = "ubsec_bytes_to_bits";
 372 static const char *UBSEC_F2 = "ubsec_bits_to_bytes";
 373 static const char *UBSEC_F3 = "ubsec_open";
 374 static const char *UBSEC_F4 = "ubsec_close";
 375 #ifndef OPENSSL_NO_DH
 376 static const char *UBSEC_F5 = "diffie_hellman_generate_ioctl";
 377 static const char *UBSEC_F6 = "diffie_hellman_agree_ioctl";
 378 #endif
 379 /* #ifndef OPENSSL_NO_RSA */
 380 static const char *UBSEC_F7 = "rsa_mod_exp_ioctl";
 381 static const char *UBSEC_F8 = "rsa_mod_exp_crt_ioctl";
 382 /* #endif */
 383 #ifndef OPENSSL_NO_DSA
 384 static const char *UBSEC_F9 = "dsa_sign_ioctl";
 385 static const char *UBSEC_F10 = "dsa_verify_ioctl";
 386 #endif
 387 static const char *UBSEC_F11 = "math_accelerate_ioctl";
 388 static const char *UBSEC_F12 = "rng_ioctl";
 389
 390 /* Destructor (complements the "ENGINE_ubsec()" constructor) */
 391 static int ubsec_destroy(ENGINE *e)
 392         {
 393         ubsec_unload_error_strings();
 394         return 1;
 395         }
 396
 397 /* (de)initialisation functions. */
 398 static int ubsec_init(ENGINE *e)
 399         {
 400         t_UBSEC_ubsec_bytes_to_bits *p1;
 401         t_UBSEC_ubsec_bits_to_bytes *p2;
 402         t_UBSEC_ubsec_open *p3;
 403         t_UBSEC_ubsec_close *p4;
 404 #ifndef OPENSSL_NO_DH
 405         t_UBSEC_diffie_hellman_generate_ioctl *p5;
 406         t_UBSEC_diffie_hellman_agree_ioctl *p6;
 407 #endif
 408 /* #ifndef OPENSSL_NO_RSA */
 409         t_UBSEC_rsa_mod_exp_ioctl *p7;
 410         t_UBSEC_rsa_mod_exp_crt_ioctl *p8;
 411 /* #endif */
 412 #ifndef OPENSSL_NO_DSA
 413         t_UBSEC_dsa_sign_ioctl *p9;
 414         t_UBSEC_dsa_verify_ioctl *p10;
 415 #endif
 416         t_UBSEC_math_accelerate_ioctl *p11;
 417         t_UBSEC_rng_ioctl *p12;
 418         int fd = 0;
 419
 420         if(ubsec_dso != NULL)
 421                 {
 422                 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_ALREADY_LOADED);
 423                 goto err;
 424                 }
 425         /*
 426          * Attempt to load libubsec.so/ubsec.dll/whatever.
 427          */
 428         ubsec_dso = DSO_load(NULL, UBSEC_LIBNAME, NULL, 0);
 429         if(ubsec_dso == NULL)
 430                 {
 431                 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_DSO_FAILURE);
 432                 goto err;
 433                 }
 434
 435         if (
 436         !(p1 = (t_UBSEC_ubsec_bytes_to_bits *) DSO_bind_func(ubsec_dso, UBSEC_F1)) ||
 437         !(p2 = (t_UBSEC_ubsec_bits_to_bytes *) DSO_bind_func(ubsec_dso, UBSEC_F2)) ||
 438         !(p3 = (t_UBSEC_ubsec_open *) DSO_bind_func(ubsec_dso, UBSEC_F3)) ||
 439         !(p4 = (t_UBSEC_ubsec_close *) DSO_bind_func(ubsec_dso, UBSEC_F4)) ||
 440 #ifndef OPENSSL_NO_DH
 441         !(p5 = (t_UBSEC_diffie_hellman_generate_ioctl *)
 442                                 DSO_bind_func(ubsec_dso, UBSEC_F5)) ||
 443         !(p6 = (t_UBSEC_diffie_hellman_agree_ioctl *)
 444                                 DSO_bind_func(ubsec_dso, UBSEC_F6)) ||
 445 #endif
 446 /* #ifndef OPENSSL_NO_RSA */
 447         !(p7 = (t_UBSEC_rsa_mod_exp_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F7)) ||
 448         !(p8 = (t_UBSEC_rsa_mod_exp_crt_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F8)) ||
 449 /* #endif */
 450 #ifndef OPENSSL_NO_DSA
 451         !(p9 = (t_UBSEC_dsa_sign_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F9)) ||
 452         !(p10 = (t_UBSEC_dsa_verify_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F10)) ||
 453 #endif
 454         !(p11 = (t_UBSEC_math_accelerate_ioctl *)
 455                                 DSO_bind_func(ubsec_dso, UBSEC_F11)) ||
 456         !(p12 = (t_UBSEC_rng_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F12)))
 457                 {
 458                 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_DSO_FAILURE);
 459                 goto err;
 460                 }
 461
 462         /* Copy the pointers */
 463         p_UBSEC_ubsec_bytes_to_bits = p1;
 464         p_UBSEC_ubsec_bits_to_bytes = p2;
 465         p_UBSEC_ubsec_open = p3;
 466         p_UBSEC_ubsec_close = p4;
 467 #ifndef OPENSSL_NO_DH
 468         p_UBSEC_diffie_hellman_generate_ioctl = p5;
 469         p_UBSEC_diffie_hellman_agree_ioctl = p6;
 470 #endif
 471 #ifndef OPENSSL_NO_RSA
 472         p_UBSEC_rsa_mod_exp_ioctl = p7;
 473         p_UBSEC_rsa_mod_exp_crt_ioctl = p8;
 474 #endif
 475 #ifndef OPENSSL_NO_DSA
 476         p_UBSEC_dsa_sign_ioctl = p9;
 477         p_UBSEC_dsa_verify_ioctl = p10;
 478 #endif
 479         p_UBSEC_math_accelerate_ioctl = p11;
 480         p_UBSEC_rng_ioctl = p12;
 481
 482         /* Perform an open to see if there's actually any unit running. */
 483         if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) > 0)
 484                 {
 485                 p_UBSEC_ubsec_close(fd);
 486                 return 1;
 487                 }
 488         else
 489                 {
 490                 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
 491                 }
 492
 493 err:
 494         if(ubsec_dso)
 495                 DSO_free(ubsec_dso);
 496         p_UBSEC_ubsec_bytes_to_bits = NULL;
 497         p_UBSEC_ubsec_bits_to_bytes = NULL;
 498         p_UBSEC_ubsec_open = NULL;
 499         p_UBSEC_ubsec_close = NULL;
 500 #ifndef OPENSSL_NO_DH
 501         p_UBSEC_diffie_hellman_generate_ioctl = NULL;
 502         p_UBSEC_diffie_hellman_agree_ioctl = NULL;
 503 #endif
 504 #ifndef OPENSSL_NO_RSA
 505         p_UBSEC_rsa_mod_exp_ioctl = NULL;
 506         p_UBSEC_rsa_mod_exp_crt_ioctl = NULL;
 507 #endif
 508 #ifndef OPENSSL_NO_DSA
 509         p_UBSEC_dsa_sign_ioctl = NULL;
 510         p_UBSEC_dsa_verify_ioctl = NULL;
 511 #endif
 512         p_UBSEC_math_accelerate_ioctl = NULL;
 513         p_UBSEC_rng_ioctl = NULL;
 514
 515         return 0;
 516         }
 517
 518 static int ubsec_finish(ENGINE *e)
 519         {
 520         if(ubsec_dso == NULL)
 521                 {
 522                 UBSECerr(UBSEC_F_UBSEC_FINISH, UBSEC_R_NOT_LOADED);
 523                 return 0;
 524                 }
 525         if(!DSO_free(ubsec_dso))
 526                 {
 527                 UBSECerr(UBSEC_F_UBSEC_FINISH, UBSEC_R_DSO_FAILURE);
 528                 return 0;
 529                 }
 530         ubsec_dso = NULL;
 531         p_UBSEC_ubsec_bytes_to_bits = NULL;
 532         p_UBSEC_ubsec_bits_to_bytes = NULL;
 533         p_UBSEC_ubsec_open = NULL;
 534         p_UBSEC_ubsec_close = NULL;
 535 #ifndef OPENSSL_NO_DH
 536         p_UBSEC_diffie_hellman_generate_ioctl = NULL;
 537         p_UBSEC_diffie_hellman_agree_ioctl = NULL;
 538 #endif
 539 #ifndef OPENSSL_NO_RSA
 540         p_UBSEC_rsa_mod_exp_ioctl = NULL;
 541         p_UBSEC_rsa_mod_exp_crt_ioctl = NULL;
 542 #endif
 543 #ifndef OPENSSL_NO_DSA
 544         p_UBSEC_dsa_sign_ioctl = NULL;
 545         p_UBSEC_dsa_verify_ioctl = NULL;
 546 #endif
 547         p_UBSEC_math_accelerate_ioctl = NULL;
 548         p_UBSEC_rng_ioctl = NULL;
 549         return 1;
 550         }
 551
 552 static int ubsec_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)())
 553         {
 554         int initialised = ((ubsec_dso == NULL) ? 0 : 1);
 555         switch(cmd)
 556                 {
 557         case UBSEC_CMD_SO_PATH:
 558                 if(p == NULL)
 559                         {
 560                         UBSECerr(UBSEC_F_UBSEC_CTRL,ERR_R_PASSED_NULL_PARAMETER);
 561                         return 0;
 562                         }
 563                 if(initialised)
 564                         {
 565                         UBSECerr(UBSEC_F_UBSEC_CTRL,UBSEC_R_ALREADY_LOADED);
 566                         return 0;
 567                         }
 568                 UBSEC_LIBNAME = (const char *)p;
 569                 return 1;
 570         default:
 571                 break;
 572                 }
 573         UBSECerr(UBSEC_F_UBSEC_CTRL,UBSEC_R_CTRL_COMMAND_NOT_IMPLEMENTED);
 574         return 0;
 575         }
 576
 577 static int ubsec_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
 578                 const BIGNUM *m, BN_CTX *ctx)
 579         {
 580         int     y_len = 0;
 581         int     fd;
 582
 583         if(ubsec_dso == NULL)
 584         {
 585                 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_NOT_LOADED);
 586                 return 0;
 587         }
 588
 589         /* Check if hardware can't handle this argument. */
 590         y_len = BN_num_bits(m);
 591         if (y_len > 1024) {
 592                 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_SIZE_TOO_LARGE_OR_TOO_SMALL);
 593                 return 0;
 594         }
 595
 596         if(!bn_wexpand(r, m->top))
 597         {
 598                 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_BN_EXPAND_FAIL);
 599                 return 0;
 600         }
 601         memset(r->d, 0, BN_num_bytes(m));
 602
 603         if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
 604                 fd = 0;
 605                 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
 606                 return 0;
 607         }
 608
 609         if (p_UBSEC_rsa_mod_exp_ioctl(fd, (unsigned char *)a->d, BN_num_bits(a),
 610                 (unsigned char *)m->d, BN_num_bits(m), (unsigned char *)p->d,
 611                 BN_num_bits(p), (unsigned char *)r->d, &y_len) != 0)
 612         {
 613                 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_REQUEST_FAILED);
 614                 return 0;
 615         }
 616
 617         p_UBSEC_ubsec_close(fd);
 618
 619         r->top = (BN_num_bits(m)+BN_BITS2-1)/BN_BITS2;
 620         return 1;
 621         }
 622
 623 #ifndef OPENSSL_NO_RSA
 624 static int ubsec_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa)
 625         {
 626         BN_CTX *ctx;
 627         int to_return = 0;
 628
 629         if((ctx = BN_CTX_new()) == NULL)
 630                 goto err;
 631
 632         if(!rsa->p || !rsa->q || !rsa->dmp1 || !rsa->dmq1 || !rsa->iqmp)
 633                 {
 634                 UBSECerr(UBSEC_F_UBSEC_RSA_MOD_EXP, UBSEC_R_MISSING_KEY_COMPONENTS);
 635                 goto err;
 636                 }
 637
 638         /*
 639          * Do in software if argument is too large for hardware.
 640          */
 641         if ((BN_num_bits(rsa->p)+BN_num_bits(rsa->q)) > 1024) {
 642                 const RSA_METHOD *meth = RSA_PKCS1_SSLeay();
 643                 to_return = (*meth->rsa_mod_exp)(r0, I, rsa);
 644         } else {
 645                 to_return = ubsec_mod_exp_crt(r0, I, rsa->p, rsa->q, rsa->dmp1,
 646                         rsa->dmq1, rsa->iqmp, ctx);
 647         }
 648 err:
 649         if(ctx)
 650                 BN_CTX_free(ctx);
 651         return to_return;
 652         }
 653 #endif
 654
 655 static int ubsec_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
 656                         const BIGNUM *q, const BIGNUM *dp,
 657                         const BIGNUM *dq, const BIGNUM *qinv, BN_CTX *ctx)
 658         {
 659         int     y_len,
 660                 m_len,
 661                 fd;
 662
 663         m_len = BN_num_bytes(p) + BN_num_bytes(q) + 1;
 664         y_len = BN_num_bits(p) + BN_num_bits(q);
 665
 666         /* Check if hardware can't handle this argument. */
 667         if (y_len > 1024) {
 668                 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_SIZE_TOO_LARGE_OR_TOO_SMALL);
 669                 return 0;
 670         }
 671
 672         if (!bn_wexpand(r, p->top + q->top + 1)) {
 673                 UBSECerr(UBSEC_F_UBSEC_RSA_MOD_EXP_CRT, UBSEC_R_BN_EXPAND_FAIL);
 674                 return 0;
 675         }
 676
 677         if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
 678                 fd = 0;
 679                 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
 680                 return 0;
 681         }
 682
 683         if (p_UBSEC_rsa_mod_exp_crt_ioctl(fd,
 684                 (unsigned char *)a->d, BN_num_bits(a),
 685                 (unsigned char *)qinv->d, BN_num_bits(qinv),
 686                 (unsigned char *)dp->d, BN_num_bits(dp),
 687                 (unsigned char *)p->d, BN_num_bits(p),
 688                 (unsigned char *)dq->d, BN_num_bits(dq),
 689                 (unsigned char *)q->d, BN_num_bits(q),
 690                 (unsigned char *)r->d,  &y_len) != 0) {
 691                 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_REQUEST_FAILED);
 692                 return 0;
 693         }
 694
 695         p_UBSEC_ubsec_close(fd);
 696
 697         r->top = (BN_num_bits(p) + BN_num_bits(q) + BN_BITS2 - 1)/BN_BITS2;
 698         return 1;
 699 }
 700
 701 #ifndef OPENSSL_NO_DSA
 702 #if NOT_USED
 703 static int ubsec_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1,
 704                 BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m,
 705                 BN_CTX *ctx, BN_MONT_CTX *in_mont)
 706         {
 707         BIGNUM t;
 708         int to_return = 0;
 709
 710         BN_init(&t);
 711         /* let rr = a1 ^ p1 mod m */
 712         if (!ubsec_mod_exp(rr,a1,p1,m,ctx)) goto end;
 713         /* let t = a2 ^ p2 mod m */
 714         if (!ubsec_mod_exp(&t,a2,p2,m,ctx)) goto end;
 715         /* let rr = rr * t mod m */
 716         if (!BN_mod_mul(rr,rr,&t,m,ctx)) goto end;
 717         to_return = 1;
 718 end:
 719         BN_free(&t);
 720         return to_return;
 721         }
 722
 723 static int ubsec_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a,
 724                 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
 725                 BN_MONT_CTX *m_ctx)
 726         {
 727         return ubsec_mod_exp(r, a, p, m, ctx);
 728         }
 729 #endif
 730 #endif
 731
 732 /*
 733  * This function is aliased to mod_exp (with the mont stuff dropped).
 734  */
 735 static int ubsec_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
 736                 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
 737         {
 738         int ret = 0;
 739
 740 #ifndef OPENSSL_NO_RSA
 741         /* Do in software if the key is too large for the hardware. */
 742         if (BN_num_bits(m) > 1024)
 743                 {
 744                 const RSA_METHOD *meth = RSA_PKCS1_SSLeay();
 745                 ret = (*meth->bn_mod_exp)(r, a, p, m, ctx, m_ctx);
 746                 }
 747         else
 748 #endif
 749                 {
 750                 ret = ubsec_mod_exp(r, a, p, m, ctx);
 751                 }
 752
 753         return ret;
 754         }
 755
 756 #ifndef OPENSSL_NO_DH
 757 /* This function is aliased to mod_exp (with the dh and mont dropped). */
 758 static int ubsec_mod_exp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a,
 759                 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
 760                 BN_MONT_CTX *m_ctx)
 761         {
 762         return ubsec_mod_exp(r, a, p, m, ctx);
 763         }
 764 #endif
 765
 766 #ifndef OPENSSL_NO_DSA
 767 static DSA_SIG *ubsec_dsa_do_sign(const unsigned char *dgst, int dlen, DSA *dsa)
 768         {
 769         DSA_SIG *to_return = NULL;
 770         int s_len = 160, r_len = 160, d_len, fd;
 771         BIGNUM m, *r=NULL, *s=NULL;
 772
 773         BN_init(&m);
 774
 775         s = BN_new();
 776         r = BN_new();
 777         if ((s == NULL) || (r==NULL))
 778                 goto err;
 779
 780         d_len = p_UBSEC_ubsec_bytes_to_bits((unsigned char *)dgst, dlen);
 781
 782         if(!bn_wexpand(r, (160+BN_BITS2-1)/BN_BITS2) ||
 783            (!bn_wexpand(s, (160+BN_BITS2-1)/BN_BITS2))) {
 784                 UBSECerr(UBSEC_F_UBSEC_DSA_SIGN, UBSEC_R_BN_EXPAND_FAIL);
 785                 goto err;
 786         }
 787
 788         if (BN_bin2bn(dgst,dlen,&m) == NULL) {
 789                 UBSECerr(UBSEC_F_UBSEC_DSA_SIGN, UBSEC_R_BN_EXPAND_FAIL);
 790                 goto err;
 791         }
 792
 793         if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
 794                 fd = 0;
 795                 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
 796                 return 0;
 797         }
 798
 799         if (p_UBSEC_dsa_sign_ioctl(fd, 0, /* compute hash before signing */
 800                 (unsigned char *)dgst, d_len,
 801                 NULL, 0,  /* compute random value */
 802                 (unsigned char *)dsa->p->d, BN_num_bits(dsa->p),
 803                 (unsigned char *)dsa->q->d, BN_num_bits(dsa->q),
 804                 (unsigned char *)dsa->g->d, BN_num_bits(dsa->g),
 805                 (unsigned char *)dsa->priv_key->d, BN_num_bits(dsa->priv_key),
 806                 (unsigned char *)r->d, &r_len,
 807                 (unsigned char *)s->d, &s_len ) != 0) {
 808                 UBSECerr(UBSEC_F_UBSEC_DSA_SIGN, UBSEC_R_REQUEST_FAILED);
 809                 goto err;
 810         }
 811
 812         p_UBSEC_ubsec_close(fd);
 813
 814         r->top = (160+BN_BITS2-1)/BN_BITS2;
 815         s->top = (160+BN_BITS2-1)/BN_BITS2;
 816
 817         to_return = DSA_SIG_new();
 818         if(to_return == NULL) {
 819                 UBSECerr(UBSEC_F_UBSEC_DSA_SIGN, UBSEC_R_BN_EXPAND_FAIL);
 820                 goto err;
 821         }
 822
 823         to_return->r = r;
 824         to_return->s = s;
 825
 826 err:
 827         if (!to_return) {
 828                 if (r) BN_free(r);
 829                 if (s) BN_free(s);
 830         }
 831         BN_clear_free(&m);
 832         return to_return;
 833 }
 834
 835 static int ubsec_dsa_verify(const unsigned char *dgst, int dgst_len,
 836                                 DSA_SIG *sig, DSA *dsa)
 837         {
 838         int v_len, d_len;
 839         int to_return = 0;
 840         int fd;
 841         BIGNUM v;
 842
 843         BN_init(&v);
 844
 845         if(!bn_wexpand(&v, dsa->p->top)) {
 846                 UBSECerr(UBSEC_F_UBSEC_DSA_VERIFY ,UBSEC_R_BN_EXPAND_FAIL);
 847                 goto err;
 848         }
 849
 850         v_len = BN_num_bits(dsa->p);
 851
 852         d_len = p_UBSEC_ubsec_bytes_to_bits((unsigned char *)dgst, dgst_len);
 853
 854         if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
 855                 fd = 0;
 856                 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
 857                 return 0;
 858         }
 859
 860         if (p_UBSEC_dsa_verify_ioctl(fd, 0, /* compute hash before signing */
 861                 (unsigned char *)dgst, d_len,
 862                 (unsigned char *)dsa->p->d, BN_num_bits(dsa->p),
 863                 (unsigned char *)dsa->q->d, BN_num_bits(dsa->q),
 864                 (unsigned char *)dsa->g->d, BN_num_bits(dsa->g),
 865                 (unsigned char *)dsa->pub_key->d, BN_num_bits(dsa->pub_key),
 866                 (unsigned char *)sig->r->d, BN_num_bits(sig->r),
 867                 (unsigned char *)sig->s->d, BN_num_bits(sig->s),
 868                 (unsigned char *)v.d, &v_len) != 0) {
 869                 UBSECerr(UBSEC_F_UBSEC_DSA_VERIFY , UBSEC_R_REQUEST_FAILED);
 870                 goto err;
 871         }
 872
 873         p_UBSEC_ubsec_close(fd);
 874
 875         to_return = 1;
 876 err:
 877         BN_clear_free(&v);
 878         return to_return;
 879         }
 880 #endif
 881
 882 #ifndef OPENSSL_NO_DH
 883 static int ubsec_dh_compute_key (unsigned char *key,const BIGNUM *pub_key,DH *dh)
 884         {
 885         return 0;
 886         }
 887
 888 static int ubsec_dh_generate_key (DH *dh)
 889         {
 890         return 0;
 891         }
 892 #endif
 893
 894 #ifdef NOT_USED
 895 static int ubsec_rand_bytes(unsigned char *buf, int num)
 896         {
 897         return 0;
 898         }
 899
 900 static int ubsec_rand_status(void)
 901         {
 902         return 0;
 903         }
 904 #endif
 905
 906 /* This stuff is needed if this ENGINE is being compiled into a self-contained
 907  * shared-library. */
 908 #ifdef ENGINE_DYNAMIC_SUPPORT
 909 static int bind_fn(ENGINE *e, const char *id)
 910         {
 911         if(id && (strcmp(id, engine_ubsec_id) != 0))
 912                 return 0;
 913         if(!bind_helper(e))
 914                 return 0;
 915         return 1;
 916         }
 917 IMPLEMENT_DYNAMIC_CHECK_FN()
 918 IMPLEMENT_DYNAMIC_BIND_FN(bind_fn)
 919 #endif /* ENGINE_DYNAMIC_SUPPORT */
 920
 921 #endif /* !OPENSSL_NO_HW_UBSEC */
 922 #endif /* !OPENSSL_NO_HW */