crypto/asn1/t_pkey.c

   1 /* crypto/asn1/t_pkey.c */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58 /* ====================================================================
  59  * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
  60  * Binary polynomial ECC support in OpenSSL originally developed by
  61  * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
  62  */
  63
  64 #include <stdio.h>
  65 #include "cryptlib.h"
  66 #include <openssl/objects.h>
  67 #include <openssl/buffer.h>
  68 #include <openssl/bn.h>
  69 #ifndef OPENSSL_NO_RSA
  70 #include <openssl/rsa.h>
  71 #endif
  72 #ifndef OPENSSL_NO_DH
  73 #include <openssl/dh.h>
  74 #endif
  75 #ifndef OPENSSL_NO_DSA
  76 #include <openssl/dsa.h>
  77 #endif
  78 #ifndef OPENSSL_NO_EC
  79 #include <openssl/ec.h>
  80 #endif
  81
  82 static int print(BIO *fp,const char *str,BIGNUM *num,
  83                 unsigned char *buf,int off);
  84 static int print_bin(BIO *fp, const char *str, const unsigned char *num,
  85                 size_t len, int off);
  86 #ifndef OPENSSL_NO_RSA
  87 #ifndef OPENSSL_NO_FP_API
  88 int RSA_print_fp(FILE *fp, const RSA *x, int off)
  89         {
  90         BIO *b;
  91         int ret;
  92
  93         if ((b=BIO_new(BIO_s_file())) == NULL)
  94                 {
  95                 RSAerr(RSA_F_RSA_PRINT_FP,ERR_R_BUF_LIB);
  96                 return(0);
  97                 }
  98         BIO_set_fp(b,fp,BIO_NOCLOSE);
  99         ret=RSA_print(b,x,off);
 100         BIO_free(b);
 101         return(ret);
 102         }
 103 #endif
 104
 105 int RSA_print(BIO *bp, const RSA *x, int off)
 106         {
 107         char str[128];
 108         const char *s;
 109         unsigned char *m=NULL;
 110         int ret=0;
 111         size_t buf_len=0, i;
 112
 113         if (x->n)
 114                 buf_len = (size_t)BN_num_bytes(x->n);
 115         if (x->e)
 116                 if (buf_len < (i = (size_t)BN_num_bytes(x->e)))
 117                         buf_len = i;
 118         if (x->d)
 119                 if (buf_len < (i = (size_t)BN_num_bytes(x->d)))
 120                         buf_len = i;
 121         if (x->p)
 122                 if (buf_len < (i = (size_t)BN_num_bytes(x->p)))
 123                         buf_len = i;
 124         if (x->q)
 125                 if (buf_len < (i = (size_t)BN_num_bytes(x->q)))
 126                         buf_len = i;
 127         if (x->dmp1)
 128                 if (buf_len < (i = (size_t)BN_num_bytes(x->dmp1)))
 129                         buf_len = i;
 130         if (x->dmq1)
 131                 if (buf_len < (i = (size_t)BN_num_bytes(x->dmq1)))
 132                         buf_len = i;
 133         if (x->iqmp)
 134                 if (buf_len < (i = (size_t)BN_num_bytes(x->iqmp)))
 135                         buf_len = i;
 136
 137         m=(unsigned char *)OPENSSL_malloc(buf_len+10);
 138         if (m == NULL)
 139                 {
 140                 RSAerr(RSA_F_RSA_PRINT,ERR_R_MALLOC_FAILURE);
 141                 goto err;
 142                 }
 143
 144         if (off)
 145                 {
 146                 if (off > 128) off=128;
 147                 memset(str,' ',off);
 148                 }
 149         if (x->d != NULL)
 150                 {
 151                 if (off && (BIO_write(bp,str,off) <= 0)) goto err;
 152                 if (BIO_printf(bp,"Private-Key: (%d bit)\n",BN_num_bits(x->n))
 153                         <= 0) goto err;
 154                 }
 155
 156         if (x->d == NULL)
 157                 sprintf(str,"Modulus (%d bit):",BN_num_bits(x->n));
 158         else
 159                 strcpy(str,"modulus:");
 160         if (!print(bp,str,x->n,m,off)) goto err;
 161         s=(x->d == NULL)?"Exponent:":"publicExponent:";
 162         if (!print(bp,s,x->e,m,off)) goto err;
 163         if (!print(bp,"privateExponent:",x->d,m,off)) goto err;
 164         if (!print(bp,"prime1:",x->p,m,off)) goto err;
 165         if (!print(bp,"prime2:",x->q,m,off)) goto err;
 166         if (!print(bp,"exponent1:",x->dmp1,m,off)) goto err;
 167         if (!print(bp,"exponent2:",x->dmq1,m,off)) goto err;
 168         if (!print(bp,"coefficient:",x->iqmp,m,off)) goto err;
 169         ret=1;
 170 err:
 171         if (m != NULL) OPENSSL_free(m);
 172         return(ret);
 173         }
 174 #endif /* OPENSSL_NO_RSA */
 175
 176 #ifndef OPENSSL_NO_DSA
 177 #ifndef OPENSSL_NO_FP_API
 178 int DSA_print_fp(FILE *fp, const DSA *x, int off)
 179         {
 180         BIO *b;
 181         int ret;
 182
 183         if ((b=BIO_new(BIO_s_file())) == NULL)
 184                 {
 185                 DSAerr(DSA_F_DSA_PRINT_FP,ERR_R_BUF_LIB);
 186                 return(0);
 187                 }
 188         BIO_set_fp(b,fp,BIO_NOCLOSE);
 189         ret=DSA_print(b,x,off);
 190         BIO_free(b);
 191         return(ret);
 192         }
 193 #endif
 194
 195 int DSA_print(BIO *bp, const DSA *x, int off)
 196         {
 197         char str[128];
 198         unsigned char *m=NULL;
 199         int ret=0;
 200         size_t buf_len=0,i;
 201
 202         if (x->p)
 203                 buf_len = (size_t)BN_num_bytes(x->p);
 204         if (x->q)
 205                 if (buf_len < (i = (size_t)BN_num_bytes(x->q)))
 206                         buf_len = i;
 207         if (x->g)
 208                 if (buf_len < (i = (size_t)BN_num_bytes(x->g)))
 209                         buf_len = i;
 210         if (x->priv_key)
 211                 if (buf_len < (i = (size_t)BN_num_bytes(x->priv_key)))
 212                         buf_len = i;
 213         if (x->pub_key)
 214                 if (buf_len < (i = (size_t)BN_num_bytes(x->pub_key)))
 215                         buf_len = i;
 216
 217         m=(unsigned char *)OPENSSL_malloc(buf_len+10);
 218         if (m == NULL)
 219                 {
 220                 DSAerr(DSA_F_DSA_PRINT,ERR_R_MALLOC_FAILURE);
 221                 goto err;
 222                 }
 223
 224         if (off)
 225                 {
 226                 if (off > 128) off=128;
 227                 memset(str,' ',off);
 228                 }
 229         if (x->priv_key != NULL)
 230                 {
 231                 if (off && (BIO_write(bp,str,off) <= 0)) goto err;
 232                 if (BIO_printf(bp,"Private-Key: (%d bit)\n",BN_num_bits(x->p))
 233                         <= 0) goto err;
 234                 }
 235
 236         if ((x->priv_key != NULL) && !print(bp,"priv:",x->priv_key,m,off))
 237                 goto err;
 238         if ((x->pub_key  != NULL) && !print(bp,"pub: ",x->pub_key,m,off))
 239                 goto err;
 240         if ((x->p != NULL) && !print(bp,"P:   ",x->p,m,off)) goto err;
 241         if ((x->q != NULL) && !print(bp,"Q:   ",x->q,m,off)) goto err;
 242         if ((x->g != NULL) && !print(bp,"G:   ",x->g,m,off)) goto err;
 243         ret=1;
 244 err:
 245         if (m != NULL) OPENSSL_free(m);
 246         return(ret);
 247         }
 248 #endif /* !OPENSSL_NO_DSA */
 249
 250 #ifndef OPENSSL_NO_EC
 251 #ifndef OPENSSL_NO_FP_API
 252 int ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x, int off)
 253         {
 254         BIO *b;
 255         int ret;
 256
 257         if ((b=BIO_new(BIO_s_file())) == NULL)
 258                 {
 259                 ECerr(EC_F_ECPKPARAMETERS_PRINT_FP,ERR_R_BUF_LIB);
 260                 return(0);
 261                 }
 262         BIO_set_fp(b, fp, BIO_NOCLOSE);
 263         ret = ECPKParameters_print(b, x, off);
 264         BIO_free(b);
 265         return(ret);
 266         }
 267
 268 int EC_KEY_print_fp(FILE *fp, const EC_KEY *x, int off)
 269         {
 270         BIO *b;
 271         int ret;
 272
 273         if ((b=BIO_new(BIO_s_file())) == NULL)
 274                 {
 275                 ECerr(EC_F_EC_KEY_PRINT_FP, ERR_R_BIO_LIB);
 276                 return(0);
 277                 }
 278         BIO_set_fp(b, fp, BIO_NOCLOSE);
 279         ret = EC_KEY_print(b, x, off);
 280         BIO_free(b);
 281         return(ret);
 282         }
 283 #endif
 284
 285 int ECPKParameters_print(BIO *bp, const EC_GROUP *x, int off)
 286         {
 287         char str[128];
 288         unsigned char *buffer=NULL;
 289         size_t  buf_len=0, i;
 290         int     ret=0, reason=ERR_R_BIO_LIB;
 291         BN_CTX  *ctx=NULL;
 292         EC_POINT *point=NULL;
 293         BIGNUM  *p=NULL, *a=NULL, *b=NULL, *gen=NULL,
 294                 *order=NULL, *cofactor=NULL;
 295         const unsigned char *seed;
 296         size_t  seed_len=0;
 297
 298         static const char *gen_compressed = "Generator (compressed):";
 299         static const char *gen_uncompressed = "Generator (uncompressed):";
 300         static const char *gen_hybrid = "Generator (hybrid):";
 301
 302         if (!x)
 303                 {
 304                 reason = ERR_R_PASSED_NULL_PARAMETER;
 305                 goto err;
 306                 }
 307
 308         if (EC_GROUP_get_asn1_flag(x))
 309                 {
 310                 /* the curve parameter are given by an asn1 OID */
 311                 int nid;
 312
 313                 if (off)
 314                         {
 315                         if (off > 128)
 316                                 off=128;
 317                         memset(str, ' ', off);
 318                         if (BIO_write(bp, str, off) <= 0)
 319                                 goto err;
 320                         }
 321
 322                 nid = EC_GROUP_get_nid(x);
 323                 if (nid == 0)
 324                         goto err;
 325
 326                 if (BIO_printf(bp, "ASN1 OID: %s", OBJ_nid2sn(nid)) <= 0)
 327                         goto err;
 328                 if (BIO_printf(bp, "\n") <= 0)
 329                         goto err;
 330                 }
 331         else
 332                 {
 333                 /* explicit parameters */
 334                 int is_char_two = 0;
 335                 point_conversion_form_t form;
 336                 int tmp_nid = EC_METHOD_get_field_type(EC_GROUP_method_of(x));
 337
 338                 if (tmp_nid == NID_X9_62_characteristic_two_field)
 339                         is_char_two = 1;
 340
 341                 if ((p = BN_new()) == NULL || (a = BN_new()) == NULL ||
 342                         (b = BN_new()) == NULL || (order = BN_new()) == NULL ||
 343                         (cofactor = BN_new()) == NULL)
 344                         {
 345                         reason = ERR_R_MALLOC_FAILURE;
 346                         goto err;
 347                         }
 348
 349                 if (is_char_two)
 350                         {
 351                         if (!EC_GROUP_get_curve_GF2m(x, p, a, b, ctx))
 352                                 {
 353                                 reason = ERR_R_EC_LIB;
 354                                 goto err;
 355                                 }
 356                         }
 357                 else /* prime field */
 358                         {
 359                         if (!EC_GROUP_get_curve_GFp(x, p, a, b, ctx))
 360                                 {
 361                                 reason = ERR_R_EC_LIB;
 362                                 goto err;
 363                                 }
 364                         }
 365
 366                 if ((point = EC_GROUP_get0_generator(x)) == NULL)
 367                         {
 368                         reason = ERR_R_EC_LIB;
 369                         goto err;
 370                         }
 371                 if (!EC_GROUP_get_order(x, order, NULL) ||
 372                         !EC_GROUP_get_cofactor(x, cofactor, NULL))
 373                         {
 374                         reason = ERR_R_EC_LIB;
 375                         goto err;
 376                         }
 377
 378                 form = EC_GROUP_get_point_conversion_form(x);
 379
 380                 if ((gen = EC_POINT_point2bn(x, point,
 381                                 form, NULL, ctx)) == NULL)
 382                         {
 383                         reason = ERR_R_EC_LIB;
 384                         goto err;
 385                         }
 386
 387                 buf_len = (size_t)BN_num_bytes(p);
 388                 if (buf_len < (i = (size_t)BN_num_bytes(a)))
 389                         buf_len = i;
 390                 if (buf_len < (i = (size_t)BN_num_bytes(b)))
 391                         buf_len = i;
 392                 if (buf_len < (i = (size_t)BN_num_bytes(gen)))
 393                         buf_len = i;
 394                 if (buf_len < (i = (size_t)BN_num_bytes(order)))
 395                         buf_len = i;
 396                 if (buf_len < (i = (size_t)BN_num_bytes(cofactor)))
 397                         buf_len = i;
 398
 399                 if ((seed = EC_GROUP_get0_seed(x)) != NULL)
 400                         seed_len = EC_GROUP_get_seed_len(x);
 401
 402                 buf_len += 10;
 403                 if ((buffer = OPENSSL_malloc(buf_len)) == NULL)
 404                         {
 405                         reason = ERR_R_MALLOC_FAILURE;
 406                         goto err;
 407                         }
 408                 if (off)
 409                         {
 410                         if (off > 128) off=128;
 411                         memset(str,' ',off);
 412                         if (BIO_write(bp, str, off) <= 0)
 413                                 goto err;
 414                         }
 415                 /* print the 'short name' of the field type */
 416                 if (BIO_printf(bp, "Field Type: %s\n", OBJ_nid2sn(tmp_nid))
 417                         <= 0)
 418                         goto err;
 419
 420                 if (is_char_two)
 421                         {
 422                         /* print the 'short name' of the base type OID */
 423                         int basis_type = EC_GROUP_get_basis_type(x, NULL,
 424                                 NULL, NULL);
 425                         if (basis_type == 0)
 426                                 goto err;
 427
 428                         if (off)
 429                                 {
 430                                 if (off > 128) off=128;
 431                                 memset(str,' ',off);
 432                                 if (BIO_write(bp, str, off) <= 0)
 433                                         goto err;
 434                                 }
 435
 436                         if (BIO_printf(bp, "Basis Type: %s\n",
 437                                 OBJ_nid2sn(basis_type)) <= 0)
 438                                 goto err;
 439
 440                         /* print the polynomial */
 441                         if ((p != NULL) && !print(bp, "Polynomial:", p, buffer,
 442                                 off))
 443                                 goto err;
 444                         }
 445                 else
 446                         {
 447                         if ((p != NULL) && !print(bp, "Prime:", p, buffer,off))
 448                                 goto err;
 449                         }
 450                 if ((a != NULL) && !print(bp, "A:   ", a, buffer, off))
 451                         goto err;
 452                 if ((b != NULL) && !print(bp, "B:   ", b, buffer, off))
 453                         goto err;
 454                 if (form == POINT_CONVERSION_COMPRESSED)
 455                         {
 456                         if ((gen != NULL) && !print(bp, gen_compressed, gen,
 457                                 buffer, off))
 458                                 goto err;
 459                         }
 460                 else if (form == POINT_CONVERSION_UNCOMPRESSED)
 461                         {
 462                         if ((gen != NULL) && !print(bp, gen_uncompressed, gen,
 463                                 buffer, off))
 464                                 goto err;
 465                         }
 466                 else /* form == POINT_CONVERSION_HYBRID */
 467                         {
 468                         if ((gen != NULL) && !print(bp, gen_hybrid, gen,
 469                                 buffer, off))
 470                                 goto err;
 471                         }
 472                 if ((order != NULL) && !print(bp, "Order: ", order,
 473                         buffer, off)) goto err;
 474                 if ((cofactor != NULL) && !print(bp, "Cofactor: ", cofactor,
 475                         buffer, off)) goto err;
 476                 if (seed && !print_bin(bp, "Seed:", seed, seed_len, off))
 477                         goto err;
 478                 }
 479         ret=1;
 480 err:
 481         if (!ret)
 482                 ECerr(EC_F_ECPKPARAMETERS_PRINT, reason);
 483         if (p)
 484                 BN_free(p);
 485         if (a)
 486                 BN_free(a);
 487         if (b)
 488                 BN_free(b);
 489         if (gen)
 490                 BN_free(gen);
 491         if (order)
 492                 BN_free(order);
 493         if (cofactor)
 494                 BN_free(cofactor);
 495         if (ctx)
 496                 BN_CTX_free(ctx);
 497         if (buffer != NULL)
 498                 OPENSSL_free(buffer);
 499         return(ret);
 500         }
 501
 502 int EC_KEY_print(BIO *bp, const EC_KEY *x, int off)
 503         {
 504         char str[128];
 505         unsigned char *buffer=NULL;
 506         size_t  buf_len=0, i;
 507         int     ret=0, reason=ERR_R_BIO_LIB;
 508         BIGNUM  *pub_key=NULL;
 509         BN_CTX  *ctx=NULL;
 510
 511         if (!x || !x->group)
 512                 {
 513                 reason = ERR_R_PASSED_NULL_PARAMETER;
 514                 goto err;
 515                 }
 516
 517         if ((pub_key = EC_POINT_point2bn(x->group, x->pub_key,
 518                 x->conv_form, NULL, ctx)) == NULL)
 519                 {
 520                 reason = ERR_R_EC_LIB;
 521                 goto err;
 522                 }
 523
 524         buf_len = (size_t)BN_num_bytes(pub_key);
 525         if (x->priv_key)
 526                 {
 527                 if ((i = (size_t)BN_num_bytes(x->priv_key)) > buf_len)
 528                         buf_len = i;
 529                 }
 530
 531         buf_len += 10;
 532         if ((buffer = OPENSSL_malloc(buf_len)) == NULL)
 533                 {
 534                 reason = ERR_R_MALLOC_FAILURE;
 535                 goto err;
 536                 }
 537         if (off)
 538                 {
 539                 if (off > 128) off=128;
 540                 memset(str,' ',off);
 541                 }
 542         if (x->priv_key != NULL)
 543                 {
 544                 if (off && (BIO_write(bp, str, off) <= 0)) goto err;
 545                 if (BIO_printf(bp, "Private-Key: (%d bit)\n",
 546                         BN_num_bits(x->priv_key)) <= 0) goto err;
 547                 }
 548
 549         if ((x->priv_key != NULL) && !print(bp, "priv:", x->priv_key,
 550                 buffer, off))
 551                 goto err;
 552         if ((pub_key != NULL) && !print(bp, "pub: ", pub_key,
 553                 buffer, off))
 554                 goto err;
 555         if (!ECPKParameters_print(bp, x->group, off))
 556                 goto err;
 557         ret=1;
 558 err:
 559         if (!ret)
 560                 ECerr(EC_F_EC_KEY_PRINT, reason);
 561         if (pub_key)
 562                 BN_free(pub_key);
 563         if (ctx)
 564                 BN_CTX_free(ctx);
 565         if (buffer != NULL)
 566                 OPENSSL_free(buffer);
 567         return(ret);
 568         }
 569 #endif /* OPENSSL_NO_EC */
 570
 571 static int print(BIO *bp, const char *number, BIGNUM *num, unsigned char *buf,
 572              int off)
 573         {
 574         int n,i;
 575         char str[128];
 576         const char *neg;
 577
 578         if (num == NULL) return(1);
 579         neg=(num->neg)?"-":"";
 580         if (off)
 581                 {
 582                 if (off > 128) off=128;
 583                 memset(str,' ',off);
 584                 if (BIO_write(bp,str,off) <= 0) return(0);
 585                 }
 586
 587         if (BN_is_zero(num))
 588                 {
 589                 if (BIO_printf(bp, "%s 0\n", number) <= 0)
 590                         return 0;
 591                 return 1;
 592                 }
 593
 594         if (BN_num_bytes(num) <= BN_BYTES)
 595                 {
 596                 if (BIO_printf(bp,"%s %s%lu (%s0x%lx)\n",number,neg,
 597                         (unsigned long)num->d[0],neg,(unsigned long)num->d[0])
 598                         <= 0) return(0);
 599                 }
 600         else
 601                 {
 602                 buf[0]=0;
 603                 if (BIO_printf(bp,"%s%s",number,
 604                         (neg[0] == '-')?" (Negative)":"") <= 0)
 605                         return(0);
 606                 n=BN_bn2bin(num,&buf[1]);
 607
 608                 if (buf[1] & 0x80)
 609                         n++;
 610                 else    buf++;
 611
 612                 for (i=0; i<n; i++)
 613                         {
 614                         if ((i%15) == 0)
 615                                 {
 616                                 str[0]='\n';
 617                                 memset(&(str[1]),' ',off+4);
 618                                 if (BIO_write(bp,str,off+1+4) <= 0) return(0);
 619                                 }
 620                         if (BIO_printf(bp,"%02x%s",buf[i],((i+1) == n)?"":":")
 621                                 <= 0) return(0);
 622                         }
 623                 if (BIO_write(bp,"\n",1) <= 0) return(0);
 624                 }
 625         return(1);
 626         }
 627
 628 static int print_bin(BIO *fp, const char *name, const unsigned char *buf,
 629                 size_t len, int off)
 630         {
 631         int i;
 632         char str[128];
 633
 634         if (buf == NULL)
 635                 return 1;
 636         if (off)
 637                 {
 638                 if (off > 128)
 639                         off=128;
 640                 memset(str,' ',off);
 641                 if (BIO_write(fp, str, off) <= 0)
 642                         return 0;
 643                 }
 644
 645         if (BIO_printf(fp,"%s", name) <= 0)
 646                 return 0;
 647
 648         for (i=0; i<len; i++)
 649                 {
 650                 if ((i%15) == 0)
 651                         {
 652                         str[0]='\n';
 653                         memset(&(str[1]),' ',off+4);
 654                         if (BIO_write(fp, str, off+1+4) <= 0)
 655                                 return 0;
 656                         }
 657                 if (BIO_printf(fp,"%02x%s",buf[i],((i+1) == len)?"":":") <= 0)
 658                         return 0;
 659                 }
 660         if (BIO_write(fp,"\n",1) <= 0)
 661                 return 0;
 662
 663         return 1;
 664         }
 665
 666 #ifndef OPENSSL_NO_DH
 667 #ifndef OPENSSL_NO_FP_API
 668 int DHparams_print_fp(FILE *fp, const DH *x)
 669         {
 670         BIO *b;
 671         int ret;
 672
 673         if ((b=BIO_new(BIO_s_file())) == NULL)
 674                 {
 675                 DHerr(DH_F_DHPARAMS_PRINT_FP,ERR_R_BUF_LIB);
 676                 return(0);
 677                 }
 678         BIO_set_fp(b,fp,BIO_NOCLOSE);
 679         ret=DHparams_print(b, x);
 680         BIO_free(b);
 681         return(ret);
 682         }
 683 #endif
 684
 685 int DHparams_print(BIO *bp, const DH *x)
 686         {
 687         unsigned char *m=NULL;
 688         int reason=ERR_R_BUF_LIB,ret=0;
 689         size_t buf_len=0, i;
 690
 691         if (x->p)
 692                 buf_len = (size_t)BN_num_bytes(x->p);
 693         if (x->g)
 694                 if (buf_len < (i = (size_t)BN_num_bytes(x->g)))
 695                         buf_len = i;
 696         m=(unsigned char *)OPENSSL_malloc(buf_len+10);
 697         if (m == NULL)
 698                 {
 699                 reason=ERR_R_MALLOC_FAILURE;
 700                 goto err;
 701                 }
 702
 703         if (BIO_printf(bp,"Diffie-Hellman-Parameters: (%d bit)\n",
 704                 BN_num_bits(x->p)) <= 0)
 705                 goto err;
 706         if (!print(bp,"prime:",x->p,m,4)) goto err;
 707         if (!print(bp,"generator:",x->g,m,4)) goto err;
 708         if (x->length != 0)
 709                 {
 710                 if (BIO_printf(bp,"    recommended-private-length: %d bits\n",
 711                         (int)x->length) <= 0) goto err;
 712                 }
 713         ret=1;
 714         if (0)
 715                 {
 716 err:
 717                 DHerr(DH_F_DHPARAMS_PRINT,reason);
 718                 }
 719         if (m != NULL) OPENSSL_free(m);
 720         return(ret);
 721         }
 722 #endif
 723
 724 #ifndef OPENSSL_NO_DSA
 725 #ifndef OPENSSL_NO_FP_API
 726 int DSAparams_print_fp(FILE *fp, const DSA *x)
 727         {
 728         BIO *b;
 729         int ret;
 730
 731         if ((b=BIO_new(BIO_s_file())) == NULL)
 732                 {
 733                 DSAerr(DSA_F_DSAPARAMS_PRINT_FP,ERR_R_BUF_LIB);
 734                 return(0);
 735                 }
 736         BIO_set_fp(b,fp,BIO_NOCLOSE);
 737         ret=DSAparams_print(b, x);
 738         BIO_free(b);
 739         return(ret);
 740         }
 741 #endif
 742
 743 int DSAparams_print(BIO *bp, const DSA *x)
 744         {
 745         unsigned char *m=NULL;
 746         int reason=ERR_R_BUF_LIB,ret=0;
 747         size_t buf_len=0,i;
 748
 749         if (x->p)
 750                 buf_len = (size_t)BN_num_bytes(x->p);
 751         if (x->q)
 752                 if (buf_len < (i = (size_t)BN_num_bytes(x->q)))
 753                         buf_len = i;
 754         if (x->g)
 755                 if (buf_len < (i = (size_t)BN_num_bytes(x->g)))
 756                         buf_len = i;
 757         m=(unsigned char *)OPENSSL_malloc(buf_len+10);
 758         if (m == NULL)
 759                 {
 760                 reason=ERR_R_MALLOC_FAILURE;
 761                 goto err;
 762                 }
 763
 764         if (BIO_printf(bp,"DSA-Parameters: (%d bit)\n",
 765                 BN_num_bits(x->p)) <= 0)
 766                 goto err;
 767         if (!print(bp,"p:",x->p,m,4)) goto err;
 768         if (!print(bp,"q:",x->q,m,4)) goto err;
 769         if (!print(bp,"g:",x->g,m,4)) goto err;
 770         ret=1;
 771 err:
 772         if (m != NULL) OPENSSL_free(m);
 773         DSAerr(DSA_F_DSAPARAMS_PRINT,reason);
 774         return(ret);
 775         }
 776
 777 #endif /* !OPENSSL_NO_DSA */
 778
 779 #ifndef OPENSSL_NO_EC
 780 #ifndef OPENSSL_NO_FP_API
 781 int ECParameters_print_fp(FILE *fp, const EC_KEY *x)
 782         {
 783         BIO *b;
 784         int ret;
 785
 786         if ((b=BIO_new(BIO_s_file())) == NULL)
 787                 {
 788                 ECerr(EC_F_ECPARAMETERS_PRINT_FP, ERR_R_BIO_LIB);
 789                 return(0);
 790                 }
 791         BIO_set_fp(b, fp, BIO_NOCLOSE);
 792         ret = ECParameters_print(b, x);
 793         BIO_free(b);
 794         return(ret);
 795         }
 796 #endif
 797
 798 int ECParameters_print(BIO *bp, const EC_KEY *x)
 799         {
 800         int     reason=ERR_R_EC_LIB, ret=0;
 801         BIGNUM  *order=NULL;
 802
 803         if (!x || !x->group)
 804                 {
 805                 reason = ERR_R_PASSED_NULL_PARAMETER;;
 806                 goto err;
 807                 }
 808
 809         if ((order = BN_new()) == NULL)
 810                 {
 811                 reason = ERR_R_MALLOC_FAILURE;
 812                 goto err;
 813                 }
 814
 815         if (!EC_GROUP_get_order(x->group, order, NULL))
 816                 {
 817                 reason = ERR_R_EC_LIB;
 818                 goto err;
 819                 }
 820
 821         if (BIO_printf(bp, "ECDSA-Parameters: (%d bit)\n",
 822                 BN_num_bits(order)) <= 0)
 823                 goto err;
 824         if (!ECPKParameters_print(bp, x->group, 4))
 825                 goto err;
 826         ret=1;
 827 err:
 828         if (order)
 829                 BN_free(order);
 830         ECerr(EC_F_ECPARAMETERS_PRINT, reason);
 831         return(ret);
 832         }
 833
 834 #endif