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 #include <stdio.h>
  60 #include "cryptlib.h"
  61 #include "buffer.h"
  62 #include "bn.h"
  63 #ifndef NO_RSA
  64 #include "rsa.h"
  65 #endif
  66 #ifndef NO_DH
  67 #include "dh.h"
  68 #endif
  69 #ifndef NO_DSA
  70 #include "dsa.h"
  71 #endif
  72
  73 /* DHerr(DH_F_DHPARAMS_PRINT,ERR_R_MALLOC_FAILURE);
  74  * DSAerr(DSA_F_DSAPARAMS_PRINT,ERR_R_MALLOC_FAILURE);
  75  */
  76
  77 #ifndef NOPROTO
  78 static int print(BIO *fp,const char *str,BIGNUM *num,
  79                 unsigned char *buf,int off);
  80 #else
  81 static int print();
  82 #endif
  83
  84 #ifndef NO_RSA
  85 #ifndef NO_FP_API
  86 int RSA_print_fp(FILE *fp, RSA *x, int off)
  87         {
  88         BIO *b;
  89         int ret;
  90
  91         if ((b=BIO_new(BIO_s_file())) == NULL)
  92                 {
  93                 RSAerr(RSA_F_RSA_PRINT_FP,ERR_R_BUF_LIB);
  94                 return(0);
  95                 }
  96         BIO_set_fp(b,fp,BIO_NOCLOSE);
  97         ret=RSA_print(b,x,off);
  98         BIO_free(b);
  99         return(ret);
 100         }
 101 #endif
 102
 103 int RSA_print(BIO *bp, RSA *x, int off)
 104         {
 105         char str[128];
 106         const char *s;
 107         unsigned char *m=NULL;
 108         int i,ret=0;
 109
 110         i=RSA_size(x);
 111         m=(unsigned char *)Malloc((unsigned int)i+10);
 112         if (m == NULL)
 113                 {
 114                 RSAerr(RSA_F_RSA_PRINT,ERR_R_MALLOC_FAILURE);
 115                 goto err;
 116                 }
 117
 118         if (off)
 119                 {
 120                 if (off > 128) off=128;
 121                 memset(str,' ',off);
 122                 }
 123         if (x->d != NULL)
 124                 {
 125                 if (off && (BIO_write(bp,str,off) <= 0)) goto err;
 126                 if (BIO_printf(bp,"Private-Key: (%d bit)\n",BN_num_bits(x->n))
 127                         <= 0) goto err;
 128                 }
 129
 130         if (x->d == NULL)
 131                 sprintf(str,"Modulus (%d bit):",BN_num_bits(x->n));
 132         else
 133                 strcpy(str,"modulus:");
 134         if (!print(bp,str,x->n,m,off)) goto err;
 135         s=(x->d == NULL)?"Exponent:":"publicExponent:";
 136         if (!print(bp,s,x->e,m,off)) goto err;
 137         if (!print(bp,"privateExponent:",x->d,m,off)) goto err;
 138         if (!print(bp,"prime1:",x->p,m,off)) goto err;
 139         if (!print(bp,"prime2:",x->q,m,off)) goto err;
 140         if (!print(bp,"exponent1:",x->dmp1,m,off)) goto err;
 141         if (!print(bp,"exponent2:",x->dmq1,m,off)) goto err;
 142         if (!print(bp,"coefficient:",x->iqmp,m,off)) goto err;
 143         ret=1;
 144 err:
 145         if (m != NULL) Free((char *)m);
 146         return(ret);
 147         }
 148 #endif /* NO_RSA */
 149
 150 #ifndef NO_DSA
 151 #ifndef NO_FP_API
 152 int DSA_print_fp(FILE *fp, DSA *x, int off)
 153         {
 154         BIO *b;
 155         int ret;
 156
 157         if ((b=BIO_new(BIO_s_file())) == NULL)
 158                 {
 159                 DSAerr(DSA_F_DSA_PRINT_FP,ERR_R_BUF_LIB);
 160                 return(0);
 161                 }
 162         BIO_set_fp(b,fp,BIO_NOCLOSE);
 163         ret=DSA_print(b,x,off);
 164         BIO_free(b);
 165         return(ret);
 166         }
 167 #endif
 168
 169 int DSA_print(BIO *bp, DSA *x, int off)
 170         {
 171         char str[128];
 172         unsigned char *m=NULL;
 173         int i,ret=0;
 174         BIGNUM *bn=NULL;
 175
 176         if (x->p != NULL)
 177                 bn=x->p;
 178         else if (x->priv_key != NULL)
 179                 bn=x->priv_key;
 180         else if (x->pub_key != NULL)
 181                 bn=x->pub_key;
 182
 183         /* larger than needed but what the hell :-) */
 184         if (bn != NULL)
 185                 i=BN_num_bytes(bn)*2;
 186         else
 187                 i=256;
 188         m=(unsigned char *)Malloc((unsigned int)i+10);
 189         if (m == NULL)
 190                 {
 191                 DSAerr(DSA_F_DSA_PRINT,ERR_R_MALLOC_FAILURE);
 192                 goto err;
 193                 }
 194
 195         if (off)
 196                 {
 197                 if (off > 128) off=128;
 198                 memset(str,' ',off);
 199                 }
 200         if (x->priv_key != NULL)
 201                 {
 202                 if (off && (BIO_write(bp,str,off) <= 0)) goto err;
 203                 if (BIO_printf(bp,"Private-Key: (%d bit)\n",BN_num_bits(x->p))
 204                         <= 0) goto err;
 205                 }
 206
 207         if ((x->priv_key != NULL) && !print(bp,"priv:",x->priv_key,m,off))
 208                 goto err;
 209         if ((x->pub_key  != NULL) && !print(bp,"pub: ",x->pub_key,m,off))
 210                 goto err;
 211         if ((x->p != NULL) && !print(bp,"P:   ",x->p,m,off)) goto err;
 212         if ((x->q != NULL) && !print(bp,"Q:   ",x->q,m,off)) goto err;
 213         if ((x->g != NULL) && !print(bp,"G:   ",x->g,m,off)) goto err;
 214         ret=1;
 215 err:
 216         if (m != NULL) Free((char *)m);
 217         return(ret);
 218         }
 219 #endif /* !NO_DSA */
 220
 221 static int print(BIO *bp, const char *number, BIGNUM *num, unsigned char *buf,
 222              int off)
 223         {
 224         int n,i;
 225         char str[128];
 226         const char *neg;
 227
 228         if (num == NULL) return(1);
 229         neg=(num->neg)?"-":"";
 230         if (off)
 231                 {
 232                 if (off > 128) off=128;
 233                 memset(str,' ',off);
 234                 if (BIO_write(bp,str,off) <= 0) return(0);
 235                 }
 236
 237         if (BN_num_bytes(num) <= BN_BYTES)
 238                 {
 239                 if (BIO_printf(bp,"%s %s%lu (%s0x%lx)\n",number,neg,
 240                         (unsigned long)num->d[0],neg,(unsigned long)num->d[0])
 241                         <= 0) return(0);
 242                 }
 243         else
 244                 {
 245                 buf[0]=0;
 246                 if (BIO_printf(bp,"%s%s",number,
 247                         (neg[0] == '-')?" (Negative)":"") <= 0)
 248                         return(0);
 249                 n=BN_bn2bin(num,&buf[1]);
 250
 251                 if (buf[1] & 0x80)
 252                         n++;
 253                 else    buf++;
 254
 255                 for (i=0; i<n; i++)
 256                         {
 257                         if ((i%15) == 0)
 258                                 {
 259                                 str[0]='\n';
 260                                 memset(&(str[1]),' ',off+4);
 261                                 if (BIO_write(bp,str,off+1+4) <= 0) return(0);
 262                                 }
 263                         if (BIO_printf(bp,"%02x%s",buf[i],((i+1) == n)?"":":")
 264                                 <= 0) return(0);
 265                         }
 266                 if (BIO_write(bp,"\n",1) <= 0) return(0);
 267                 }
 268         return(1);
 269         }
 270
 271 #ifndef NO_DH
 272 #ifndef NO_FP_API
 273 int DHparams_print_fp(FILE *fp, DH *x)
 274         {
 275         BIO *b;
 276         int ret;
 277
 278         if ((b=BIO_new(BIO_s_file())) == NULL)
 279                 {
 280                 DHerr(DH_F_DHPARAMS_PRINT_FP,ERR_R_BUF_LIB);
 281                 return(0);
 282                 }
 283         BIO_set_fp(b,fp,BIO_NOCLOSE);
 284         ret=DHparams_print(b, x);
 285         BIO_free(b);
 286         return(ret);
 287         }
 288 #endif
 289
 290 int DHparams_print(BIO *bp, DH *x)
 291         {
 292         unsigned char *m=NULL;
 293         int reason=ERR_R_BUF_LIB,i,ret=0;
 294
 295         i=BN_num_bytes(x->p);
 296         m=(unsigned char *)Malloc((unsigned int)i+10);
 297         if (m == NULL)
 298                 {
 299                 reason=ERR_R_MALLOC_FAILURE;
 300                 goto err;
 301                 }
 302
 303         if (BIO_printf(bp,"Diffie-Hellman-Parameters: (%d bit)\n",
 304                 BN_num_bits(x->p)) <= 0)
 305                 goto err;
 306         if (!print(bp,"prime:",x->p,m,4)) goto err;
 307         if (!print(bp,"generator:",x->g,m,4)) goto err;
 308         if (x->length != 0)
 309                 {
 310                 if (BIO_printf(bp,"    recomented-private-length: %d bits\n",
 311                         (int)x->length) <= 0) goto err;
 312                 }
 313         ret=1;
 314         if (0)
 315                 {
 316 err:
 317                 DHerr(DH_F_DHPARAMS_PRINT,reason);
 318                 }
 319         if (m != NULL) Free((char *)m);
 320         return(ret);
 321         }
 322 #endif
 323
 324 #ifndef NO_DSA
 325 #ifndef NO_FP_API
 326 int DSAparams_print_fp(FILE *fp, DSA *x)
 327         {
 328         BIO *b;
 329         int ret;
 330
 331         if ((b=BIO_new(BIO_s_file())) == NULL)
 332                 {
 333                 DSAerr(DSA_F_DSAPARAMS_PRINT_FP,ERR_R_BUF_LIB);
 334                 return(0);
 335                 }
 336         BIO_set_fp(b,fp,BIO_NOCLOSE);
 337         ret=DSAparams_print(b, x);
 338         BIO_free(b);
 339         return(ret);
 340         }
 341 #endif
 342
 343 int DSAparams_print(BIO *bp, DSA *x)
 344         {
 345         unsigned char *m=NULL;
 346         int reason=ERR_R_BUF_LIB,i,ret=0;
 347
 348         i=BN_num_bytes(x->p);
 349         m=(unsigned char *)Malloc((unsigned int)i+10);
 350         if (m == NULL)
 351                 {
 352                 reason=ERR_R_MALLOC_FAILURE;
 353                 goto err;
 354                 }
 355
 356         if (BIO_printf(bp,"DSA-Parameters: (%d bit)\n",
 357                 BN_num_bits(x->p)) <= 0)
 358                 goto err;
 359         if (!print(bp,"p:",x->p,m,4)) goto err;
 360         if (!print(bp,"q:",x->q,m,4)) goto err;
 361         if (!print(bp,"g:",x->g,m,4)) goto err;
 362         ret=1;
 363 err:
 364         if (m != NULL) Free((char *)m);
 365         DSAerr(DSA_F_DSAPARAMS_PRINT,reason);
 366         return(ret);
 367         }
 368
 369 #endif /* !NO_DSA */
 370