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 (x->d != NULL)
 145                 {
 146                 if(!BIO_indent(bp,off,128))
 147                    goto err;
 148                 if (BIO_printf(bp,"Private-Key: (%d bit)\n",BN_num_bits(x->n))
 149                         <= 0) goto err;
 150                 }
 151
 152         if (x->d == NULL)
 153                 sprintf(str,"Modulus (%d bit):",BN_num_bits(x->n));
 154         else
 155                 strcpy(str,"modulus:");
 156         if (!print(bp,str,x->n,m,off)) goto err;
 157         s=(x->d == NULL)?"Exponent:":"publicExponent:";
 158         if (!print(bp,s,x->e,m,off)) goto err;
 159         if (!print(bp,"privateExponent:",x->d,m,off)) goto err;
 160         if (!print(bp,"prime1:",x->p,m,off)) goto err;
 161         if (!print(bp,"prime2:",x->q,m,off)) goto err;
 162         if (!print(bp,"exponent1:",x->dmp1,m,off)) goto err;
 163         if (!print(bp,"exponent2:",x->dmq1,m,off)) goto err;
 164         if (!print(bp,"coefficient:",x->iqmp,m,off)) goto err;
 165         ret=1;
 166 err:
 167         if (m != NULL) OPENSSL_free(m);
 168         return(ret);
 169         }
 170 #endif /* OPENSSL_NO_RSA */
 171
 172 #ifndef OPENSSL_NO_DSA
 173 #ifndef OPENSSL_NO_FP_API
 174 int DSA_print_fp(FILE *fp, const DSA *x, int off)
 175         {
 176         BIO *b;
 177         int ret;
 178
 179         if ((b=BIO_new(BIO_s_file())) == NULL)
 180                 {
 181                 DSAerr(DSA_F_DSA_PRINT_FP,ERR_R_BUF_LIB);
 182                 return(0);
 183                 }
 184         BIO_set_fp(b,fp,BIO_NOCLOSE);
 185         ret=DSA_print(b,x,off);
 186         BIO_free(b);
 187         return(ret);
 188         }
 189 #endif
 190
 191 int DSA_print(BIO *bp, const DSA *x, int off)
 192         {
 193         unsigned char *m=NULL;
 194         int ret=0;
 195         size_t buf_len=0,i;
 196
 197         if (x->p)
 198                 buf_len = (size_t)BN_num_bytes(x->p);
 199         if (x->q)
 200                 if (buf_len < (i = (size_t)BN_num_bytes(x->q)))
 201                         buf_len = i;
 202         if (x->g)
 203                 if (buf_len < (i = (size_t)BN_num_bytes(x->g)))
 204                         buf_len = i;
 205         if (x->priv_key)
 206                 if (buf_len < (i = (size_t)BN_num_bytes(x->priv_key)))
 207                         buf_len = i;
 208         if (x->pub_key)
 209                 if (buf_len < (i = (size_t)BN_num_bytes(x->pub_key)))
 210                         buf_len = i;
 211
 212         m=(unsigned char *)OPENSSL_malloc(buf_len+10);
 213         if (m == NULL)
 214                 {
 215                 DSAerr(DSA_F_DSA_PRINT,ERR_R_MALLOC_FAILURE);
 216                 goto err;
 217                 }
 218
 219         if (x->priv_key != NULL)
 220                 {
 221                 if(!BIO_indent(bp,off,128))
 222                    goto err;
 223                 if (BIO_printf(bp,"Private-Key: (%d bit)\n",BN_num_bits(x->p))
 224                         <= 0) goto err;
 225                 }
 226
 227         if ((x->priv_key != NULL) && !print(bp,"priv:",x->priv_key,m,off))
 228                 goto err;
 229         if ((x->pub_key  != NULL) && !print(bp,"pub: ",x->pub_key,m,off))
 230                 goto err;
 231         if ((x->p != NULL) && !print(bp,"P:   ",x->p,m,off)) goto err;
 232         if ((x->q != NULL) && !print(bp,"Q:   ",x->q,m,off)) goto err;
 233         if ((x->g != NULL) && !print(bp,"G:   ",x->g,m,off)) goto err;
 234         ret=1;
 235 err:
 236         if (m != NULL) OPENSSL_free(m);
 237         return(ret);
 238         }
 239 #endif /* !OPENSSL_NO_DSA */
 240
 241 #ifndef OPENSSL_NO_EC
 242 #ifndef OPENSSL_NO_FP_API
 243 int ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x, int off)
 244         {
 245         BIO *b;
 246         int ret;
 247
 248         if ((b=BIO_new(BIO_s_file())) == NULL)
 249                 {
 250                 ECerr(EC_F_ECPKPARAMETERS_PRINT_FP,ERR_R_BUF_LIB);
 251                 return(0);
 252                 }
 253         BIO_set_fp(b, fp, BIO_NOCLOSE);
 254         ret = ECPKParameters_print(b, x, off);
 255         BIO_free(b);
 256         return(ret);
 257         }
 258
 259 int EC_KEY_print_fp(FILE *fp, const EC_KEY *x, int off)
 260         {
 261         BIO *b;
 262         int ret;
 263
 264         if ((b=BIO_new(BIO_s_file())) == NULL)
 265                 {
 266                 ECerr(EC_F_EC_KEY_PRINT_FP, ERR_R_BIO_LIB);
 267                 return(0);
 268                 }
 269         BIO_set_fp(b, fp, BIO_NOCLOSE);
 270         ret = EC_KEY_print(b, x, off);
 271         BIO_free(b);
 272         return(ret);
 273         }
 274 #endif
 275
 276 int ECPKParameters_print(BIO *bp, const EC_GROUP *x, int off)
 277         {
 278         unsigned char *buffer=NULL;
 279         size_t  buf_len=0, i;
 280         int     ret=0, reason=ERR_R_BIO_LIB;
 281         BN_CTX  *ctx=NULL;
 282         EC_POINT *point=NULL;
 283         BIGNUM  *p=NULL, *a=NULL, *b=NULL, *gen=NULL,
 284                 *order=NULL, *cofactor=NULL;
 285         const unsigned char *seed;
 286         size_t  seed_len=0;
 287
 288         static const char *gen_compressed = "Generator (compressed):";
 289         static const char *gen_uncompressed = "Generator (uncompressed):";
 290         static const char *gen_hybrid = "Generator (hybrid):";
 291
 292         if (!x)
 293                 {
 294                 reason = ERR_R_PASSED_NULL_PARAMETER;
 295                 goto err;
 296                 }
 297
 298         if (EC_GROUP_get_asn1_flag(x))
 299                 {
 300                 /* the curve parameter are given by an asn1 OID */
 301                 int nid;
 302
 303                 if (!BIO_indent(bp, off, 128))
 304                         goto err;
 305
 306                 nid = EC_GROUP_get_nid(x);
 307                 if (nid == 0)
 308                         goto err;
 309
 310                 if (BIO_printf(bp, "ASN1 OID: %s", OBJ_nid2sn(nid)) <= 0)
 311                         goto err;
 312                 if (BIO_printf(bp, "\n") <= 0)
 313                         goto err;
 314                 }
 315         else
 316                 {
 317                 /* explicit parameters */
 318                 int is_char_two = 0;
 319                 point_conversion_form_t form;
 320                 int tmp_nid = EC_METHOD_get_field_type(EC_GROUP_method_of(x));
 321
 322                 if (tmp_nid == NID_X9_62_characteristic_two_field)
 323                         is_char_two = 1;
 324
 325                 if ((p = BN_new()) == NULL || (a = BN_new()) == NULL ||
 326                         (b = BN_new()) == NULL || (order = BN_new()) == NULL ||
 327                         (cofactor = BN_new()) == NULL)
 328                         {
 329                         reason = ERR_R_MALLOC_FAILURE;
 330                         goto err;
 331                         }
 332
 333                 if (is_char_two)
 334                         {
 335                         if (!EC_GROUP_get_curve_GF2m(x, p, a, b, ctx))
 336                                 {
 337                                 reason = ERR_R_EC_LIB;
 338                                 goto err;
 339                                 }
 340                         }
 341                 else /* prime field */
 342                         {
 343                         if (!EC_GROUP_get_curve_GFp(x, p, a, b, ctx))
 344                                 {
 345                                 reason = ERR_R_EC_LIB;
 346                                 goto err;
 347                                 }
 348                         }
 349
 350                 if ((point = EC_GROUP_get0_generator(x)) == NULL)
 351                         {
 352                         reason = ERR_R_EC_LIB;
 353                         goto err;
 354                         }
 355                 if (!EC_GROUP_get_order(x, order, NULL) ||
 356                         !EC_GROUP_get_cofactor(x, cofactor, NULL))
 357                         {
 358                         reason = ERR_R_EC_LIB;
 359                         goto err;
 360                         }
 361
 362                 form = EC_GROUP_get_point_conversion_form(x);
 363
 364                 if ((gen = EC_POINT_point2bn(x, point,
 365                                 form, NULL, ctx)) == NULL)
 366                         {
 367                         reason = ERR_R_EC_LIB;
 368                         goto err;
 369                         }
 370
 371                 buf_len = (size_t)BN_num_bytes(p);
 372                 if (buf_len < (i = (size_t)BN_num_bytes(a)))
 373                         buf_len = i;
 374                 if (buf_len < (i = (size_t)BN_num_bytes(b)))
 375                         buf_len = i;
 376                 if (buf_len < (i = (size_t)BN_num_bytes(gen)))
 377                         buf_len = i;
 378                 if (buf_len < (i = (size_t)BN_num_bytes(order)))
 379                         buf_len = i;
 380                 if (buf_len < (i = (size_t)BN_num_bytes(cofactor)))
 381                         buf_len = i;
 382
 383                 if ((seed = EC_GROUP_get0_seed(x)) != NULL)
 384                         seed_len = EC_GROUP_get_seed_len(x);
 385
 386                 buf_len += 10;
 387                 if ((buffer = OPENSSL_malloc(buf_len)) == NULL)
 388                         {
 389                         reason = ERR_R_MALLOC_FAILURE;
 390                         goto err;
 391                         }
 392
 393                 if (!BIO_indent(bp, off, 128))
 394                         goto err;
 395
 396                 /* print the 'short name' of the field type */
 397                 if (BIO_printf(bp, "Field Type: %s\n", OBJ_nid2sn(tmp_nid))
 398                         <= 0)
 399                         goto err;
 400
 401                 if (is_char_two)
 402                         {
 403                         /* print the 'short name' of the base type OID */
 404                         int basis_type = EC_GROUP_get_basis_type(x);
 405                         if (basis_type == 0)
 406                                 goto err;
 407
 408                         if (!BIO_indent(bp, off, 128))
 409                                 goto err;
 410
 411                         if (BIO_printf(bp, "Basis Type: %s\n",
 412                                 OBJ_nid2sn(basis_type)) <= 0)
 413                                 goto err;
 414
 415                         /* print the polynomial */
 416                         if ((p != NULL) && !print(bp, "Polynomial:", p, buffer,
 417                                 off))
 418                                 goto err;
 419                         }
 420                 else
 421                         {
 422                         if ((p != NULL) && !print(bp, "Prime:", p, buffer,off))
 423                                 goto err;
 424                         }
 425                 if ((a != NULL) && !print(bp, "A:   ", a, buffer, off))
 426                         goto err;
 427                 if ((b != NULL) && !print(bp, "B:   ", b, buffer, off))
 428                         goto err;
 429                 if (form == POINT_CONVERSION_COMPRESSED)
 430                         {
 431                         if ((gen != NULL) && !print(bp, gen_compressed, gen,
 432                                 buffer, off))
 433                                 goto err;
 434                         }
 435                 else if (form == POINT_CONVERSION_UNCOMPRESSED)
 436                         {
 437                         if ((gen != NULL) && !print(bp, gen_uncompressed, gen,
 438                                 buffer, off))
 439                                 goto err;
 440                         }
 441                 else /* form == POINT_CONVERSION_HYBRID */
 442                         {
 443                         if ((gen != NULL) && !print(bp, gen_hybrid, gen,
 444                                 buffer, off))
 445                                 goto err;
 446                         }
 447                 if ((order != NULL) && !print(bp, "Order: ", order,
 448                         buffer, off)) goto err;
 449                 if ((cofactor != NULL) && !print(bp, "Cofactor: ", cofactor,
 450                         buffer, off)) goto err;
 451                 if (seed && !print_bin(bp, "Seed:", seed, seed_len, off))
 452                         goto err;
 453                 }
 454         ret=1;
 455 err:
 456         if (!ret)
 457                 ECerr(EC_F_ECPKPARAMETERS_PRINT, reason);
 458         if (p)
 459                 BN_free(p);
 460         if (a)
 461                 BN_free(a);
 462         if (b)
 463                 BN_free(b);
 464         if (gen)
 465                 BN_free(gen);
 466         if (order)
 467                 BN_free(order);
 468         if (cofactor)
 469                 BN_free(cofactor);
 470         if (ctx)
 471                 BN_CTX_free(ctx);
 472         if (buffer != NULL)
 473                 OPENSSL_free(buffer);
 474         return(ret);
 475         }
 476
 477 int EC_KEY_print(BIO *bp, const EC_KEY *x, int off)
 478         {
 479         unsigned char *buffer=NULL;
 480         size_t  buf_len=0, i;
 481         int     ret=0, reason=ERR_R_BIO_LIB;
 482         BIGNUM  *pub_key=NULL;
 483         BN_CTX  *ctx=NULL;
 484
 485         if (!x || !x->group)
 486                 {
 487                 reason = ERR_R_PASSED_NULL_PARAMETER;
 488                 goto err;
 489                 }
 490
 491         if ((pub_key = EC_POINT_point2bn(x->group, x->pub_key,
 492                 x->conv_form, NULL, ctx)) == NULL)
 493                 {
 494                 reason = ERR_R_EC_LIB;
 495                 goto err;
 496                 }
 497
 498         buf_len = (size_t)BN_num_bytes(pub_key);
 499         if (x->priv_key)
 500                 {
 501                 if ((i = (size_t)BN_num_bytes(x->priv_key)) > buf_len)
 502                         buf_len = i;
 503                 }
 504
 505         buf_len += 10;
 506         if ((buffer = OPENSSL_malloc(buf_len)) == NULL)
 507                 {
 508                 reason = ERR_R_MALLOC_FAILURE;
 509                 goto err;
 510                 }
 511
 512         if (x->priv_key != NULL)
 513                 {
 514                 if (!BIO_indent(bp, off, 128))
 515                         goto err;
 516                 if (BIO_printf(bp, "Private-Key: (%d bit)\n",
 517                         BN_num_bits(x->priv_key)) <= 0) goto err;
 518                 }
 519
 520         if ((x->priv_key != NULL) && !print(bp, "priv:", x->priv_key,
 521                 buffer, off))
 522                 goto err;
 523         if ((pub_key != NULL) && !print(bp, "pub: ", pub_key,
 524                 buffer, off))
 525                 goto err;
 526         if (!ECPKParameters_print(bp, x->group, off))
 527                 goto err;
 528         ret=1;
 529 err:
 530         if (!ret)
 531                 ECerr(EC_F_EC_KEY_PRINT, reason);
 532         if (pub_key)
 533                 BN_free(pub_key);
 534         if (ctx)
 535                 BN_CTX_free(ctx);
 536         if (buffer != NULL)
 537                 OPENSSL_free(buffer);
 538         return(ret);
 539         }
 540 #endif /* OPENSSL_NO_EC */
 541
 542 static int print(BIO *bp, const char *number, BIGNUM *num, unsigned char *buf,
 543              int off)
 544         {
 545         int n,i;
 546         const char *neg;
 547
 548         if (num == NULL) return(1);
 549         neg = (BN_get_sign(num))?"-":"";
 550         if(!BIO_indent(bp,off,128))
 551                 return 0;
 552         if (BN_is_zero(num))
 553                 {
 554                 if (BIO_printf(bp, "%s 0\n", number) <= 0)
 555                         return 0;
 556                 return 1;
 557                 }
 558
 559         if (BN_num_bytes(num) <= BN_BYTES)
 560                 {
 561                 if (BIO_printf(bp,"%s %s%lu (%s0x%lx)\n",number,neg,
 562                         (unsigned long)num->d[0],neg,(unsigned long)num->d[0])
 563                         <= 0) return(0);
 564                 }
 565         else
 566                 {
 567                 buf[0]=0;
 568                 if (BIO_printf(bp,"%s%s",number,
 569                         (neg[0] == '-')?" (Negative)":"") <= 0)
 570                         return(0);
 571                 n=BN_bn2bin(num,&buf[1]);
 572
 573                 if (buf[1] & 0x80)
 574                         n++;
 575                 else    buf++;
 576
 577                 for (i=0; i<n; i++)
 578                         {
 579                         if ((i%15) == 0)
 580                                 {
 581                                 if(BIO_puts(bp,"\n") <= 0
 582                                    || !BIO_indent(bp,off+4,128))
 583                                     return 0;
 584                                 }
 585                         if (BIO_printf(bp,"%02x%s",buf[i],((i+1) == n)?"":":")
 586                                 <= 0) return(0);
 587                         }
 588                 if (BIO_write(bp,"\n",1) <= 0) return(0);
 589                 }
 590         return(1);
 591         }
 592
 593 static int print_bin(BIO *fp, const char *name, const unsigned char *buf,
 594                 size_t len, int off)
 595         {
 596         size_t i;
 597         char str[128];
 598
 599         if (buf == NULL)
 600                 return 1;
 601         if (off)
 602                 {
 603                 if (off > 128)
 604                         off=128;
 605                 memset(str,' ',off);
 606                 if (BIO_write(fp, str, off) <= 0)
 607                         return 0;
 608                 }
 609
 610         if (BIO_printf(fp,"%s", name) <= 0)
 611                 return 0;
 612
 613         for (i=0; i<len; i++)
 614                 {
 615                 if ((i%15) == 0)
 616                         {
 617                         str[0]='\n';
 618                         memset(&(str[1]),' ',off+4);
 619                         if (BIO_write(fp, str, off+1+4) <= 0)
 620                                 return 0;
 621                         }
 622                 if (BIO_printf(fp,"%02x%s",buf[i],((i+1) == len)?"":":") <= 0)
 623                         return 0;
 624                 }
 625         if (BIO_write(fp,"\n",1) <= 0)
 626                 return 0;
 627
 628         return 1;
 629         }
 630
 631 #ifndef OPENSSL_NO_DH
 632 #ifndef OPENSSL_NO_FP_API
 633 int DHparams_print_fp(FILE *fp, const DH *x)
 634         {
 635         BIO *b;
 636         int ret;
 637
 638         if ((b=BIO_new(BIO_s_file())) == NULL)
 639                 {
 640                 DHerr(DH_F_DHPARAMS_PRINT_FP,ERR_R_BUF_LIB);
 641                 return(0);
 642                 }
 643         BIO_set_fp(b,fp,BIO_NOCLOSE);
 644         ret=DHparams_print(b, x);
 645         BIO_free(b);
 646         return(ret);
 647         }
 648 #endif
 649
 650 int DHparams_print(BIO *bp, const DH *x)
 651         {
 652         unsigned char *m=NULL;
 653         int reason=ERR_R_BUF_LIB,ret=0;
 654         size_t buf_len=0, i;
 655
 656         if (x->p)
 657                 buf_len = (size_t)BN_num_bytes(x->p);
 658         if (x->g)
 659                 if (buf_len < (i = (size_t)BN_num_bytes(x->g)))
 660                         buf_len = i;
 661         m=(unsigned char *)OPENSSL_malloc(buf_len+10);
 662         if (m == NULL)
 663                 {
 664                 reason=ERR_R_MALLOC_FAILURE;
 665                 goto err;
 666                 }
 667
 668         if (BIO_printf(bp,"Diffie-Hellman-Parameters: (%d bit)\n",
 669                 BN_num_bits(x->p)) <= 0)
 670                 goto err;
 671         if (!print(bp,"prime:",x->p,m,4)) goto err;
 672         if (!print(bp,"generator:",x->g,m,4)) goto err;
 673         if (x->length != 0)
 674                 {
 675                 if (BIO_printf(bp,"    recommended-private-length: %d bits\n",
 676                         (int)x->length) <= 0) goto err;
 677                 }
 678         ret=1;
 679         if (0)
 680                 {
 681 err:
 682                 DHerr(DH_F_DHPARAMS_PRINT,reason);
 683                 }
 684         if (m != NULL) OPENSSL_free(m);
 685         return(ret);
 686         }
 687 #endif
 688
 689 #ifndef OPENSSL_NO_DSA
 690 #ifndef OPENSSL_NO_FP_API
 691 int DSAparams_print_fp(FILE *fp, const DSA *x)
 692         {
 693         BIO *b;
 694         int ret;
 695
 696         if ((b=BIO_new(BIO_s_file())) == NULL)
 697                 {
 698                 DSAerr(DSA_F_DSAPARAMS_PRINT_FP,ERR_R_BUF_LIB);
 699                 return(0);
 700                 }
 701         BIO_set_fp(b,fp,BIO_NOCLOSE);
 702         ret=DSAparams_print(b, x);
 703         BIO_free(b);
 704         return(ret);
 705         }
 706 #endif
 707
 708 int DSAparams_print(BIO *bp, const DSA *x)
 709         {
 710         unsigned char *m=NULL;
 711         int reason=ERR_R_BUF_LIB,ret=0;
 712         size_t buf_len=0,i;
 713
 714         if (x->p)
 715                 buf_len = (size_t)BN_num_bytes(x->p);
 716         if (x->q)
 717                 if (buf_len < (i = (size_t)BN_num_bytes(x->q)))
 718                         buf_len = i;
 719         if (x->g)
 720                 if (buf_len < (i = (size_t)BN_num_bytes(x->g)))
 721                         buf_len = i;
 722         m=(unsigned char *)OPENSSL_malloc(buf_len+10);
 723         if (m == NULL)
 724                 {
 725                 reason=ERR_R_MALLOC_FAILURE;
 726                 goto err;
 727                 }
 728
 729         if (BIO_printf(bp,"DSA-Parameters: (%d bit)\n",
 730                 BN_num_bits(x->p)) <= 0)
 731                 goto err;
 732         if (!print(bp,"p:",x->p,m,4)) goto err;
 733         if (!print(bp,"q:",x->q,m,4)) goto err;
 734         if (!print(bp,"g:",x->g,m,4)) goto err;
 735         ret=1;
 736 err:
 737         if (m != NULL) OPENSSL_free(m);
 738         DSAerr(DSA_F_DSAPARAMS_PRINT,reason);
 739         return(ret);
 740         }
 741
 742 #endif /* !OPENSSL_NO_DSA */
 743
 744 #ifndef OPENSSL_NO_EC
 745 #ifndef OPENSSL_NO_FP_API
 746 int ECParameters_print_fp(FILE *fp, const EC_KEY *x)
 747         {
 748         BIO *b;
 749         int ret;
 750
 751         if ((b=BIO_new(BIO_s_file())) == NULL)
 752                 {
 753                 ECerr(EC_F_ECPARAMETERS_PRINT_FP, ERR_R_BIO_LIB);
 754                 return(0);
 755                 }
 756         BIO_set_fp(b, fp, BIO_NOCLOSE);
 757         ret = ECParameters_print(b, x);
 758         BIO_free(b);
 759         return(ret);
 760         }
 761 #endif
 762
 763 int ECParameters_print(BIO *bp, const EC_KEY *x)
 764         {
 765         int     reason=ERR_R_EC_LIB, ret=0;
 766         BIGNUM  *order=NULL;
 767
 768         if (!x || !x->group)
 769                 {
 770                 reason = ERR_R_PASSED_NULL_PARAMETER;;
 771                 goto err;
 772                 }
 773
 774         if ((order = BN_new()) == NULL)
 775                 {
 776                 reason = ERR_R_MALLOC_FAILURE;
 777                 goto err;
 778                 }
 779
 780         if (!EC_GROUP_get_order(x->group, order, NULL))
 781                 {
 782                 reason = ERR_R_EC_LIB;
 783                 goto err;
 784                 }
 785
 786         if (BIO_printf(bp, "ECDSA-Parameters: (%d bit)\n",
 787                 BN_num_bits(order)) <= 0)
 788                 goto err;
 789         if (!ECPKParameters_print(bp, x->group, 4))
 790                 goto err;
 791         ret=1;
 792 err:
 793         if (order)
 794                 BN_free(order);
 795         ECerr(EC_F_ECPARAMETERS_PRINT, reason);
 796         return(ret);
 797         }
 798
 799 #endif