644349df4ed1b88913b99e126d58e448dbee5623
[openssl.git] / 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 <openssl/buffer.h>
62 #include <openssl/bn.h>
63 #ifndef NO_RSA
64 #include <openssl/rsa.h>
65 #endif
66 #ifndef NO_DH
67 #include <openssl/dh.h>
68 #endif
69 #ifndef NO_DSA
70 #include <openssl/dsa.h>
71 #endif
72
73 static int print(BIO *fp,const char *str,BIGNUM *num,
74                 unsigned char *buf,int off);
75 #ifndef NO_RSA
76 #ifndef NO_FP_API
77 int RSA_print_fp(FILE *fp, const RSA *x, int off)
78         {
79         BIO *b;
80         int ret;
81
82         if ((b=BIO_new(BIO_s_file())) == NULL)
83                 {
84                 RSAerr(RSA_F_RSA_PRINT_FP,ERR_R_BUF_LIB);
85                 return(0);
86                 }
87         BIO_set_fp(b,fp,BIO_NOCLOSE);
88         ret=RSA_print(b,x,off);
89         BIO_free(b);
90         return(ret);
91         }
92 #endif
93
94 int RSA_print(BIO *bp, const RSA *x, int off)
95         {
96         char str[128];
97         const char *s;
98         unsigned char *m=NULL;
99         int i,ret=0;
100
101         i=RSA_size(x);
102         m=(unsigned char *)OPENSSL_malloc((unsigned int)i+10);
103         if (m == NULL)
104                 {
105                 RSAerr(RSA_F_RSA_PRINT,ERR_R_MALLOC_FAILURE);
106                 goto err;
107                 }
108
109         if (off)
110                 {
111                 if (off > 128) off=128;
112                 memset(str,' ',off);
113                 }
114         if (x->d != NULL)
115                 {
116                 if (off && (BIO_write(bp,str,off) <= 0)) goto err;
117                 if (BIO_printf(bp,"Private-Key: (%d bit)\n",BN_num_bits(x->n))
118                         <= 0) goto err;
119                 }
120
121         if (x->d == NULL)
122                 sprintf(str,"Modulus (%d bit):",BN_num_bits(x->n));
123         else
124                 strcpy(str,"modulus:");
125         if (!print(bp,str,x->n,m,off)) goto err;
126         s=(x->d == NULL)?"Exponent:":"publicExponent:";
127         if (!print(bp,s,x->e,m,off)) goto err;
128         if (!print(bp,"privateExponent:",x->d,m,off)) goto err;
129         if (!print(bp,"prime1:",x->p,m,off)) goto err;
130         if (!print(bp,"prime2:",x->q,m,off)) goto err;
131         if (!print(bp,"exponent1:",x->dmp1,m,off)) goto err;
132         if (!print(bp,"exponent2:",x->dmq1,m,off)) goto err;
133         if (!print(bp,"coefficient:",x->iqmp,m,off)) goto err;
134         ret=1;
135 err:
136         if (m != NULL) OPENSSL_free(m);
137         return(ret);
138         }
139 #endif /* NO_RSA */
140
141 #ifndef NO_DSA
142 #ifndef NO_FP_API
143 int DSA_print_fp(FILE *fp, const DSA *x, int off)
144         {
145         BIO *b;
146         int ret;
147
148         if ((b=BIO_new(BIO_s_file())) == NULL)
149                 {
150                 DSAerr(DSA_F_DSA_PRINT_FP,ERR_R_BUF_LIB);
151                 return(0);
152                 }
153         BIO_set_fp(b,fp,BIO_NOCLOSE);
154         ret=DSA_print(b,x,off);
155         BIO_free(b);
156         return(ret);
157         }
158 #endif
159
160 int DSA_print(BIO *bp, const DSA *x, int off)
161         {
162         char str[128];
163         unsigned char *m=NULL;
164         int i,ret=0;
165         BIGNUM *bn=NULL;
166
167         if (x->p != NULL)
168                 bn=x->p;
169         else if (x->priv_key != NULL)
170                 bn=x->priv_key;
171         else if (x->pub_key != NULL)
172                 bn=x->pub_key;
173                 
174         /* larger than needed but what the hell :-) */
175         if (bn != NULL)
176                 i=BN_num_bytes(bn)*2;
177         else
178                 i=256;
179         m=(unsigned char *)OPENSSL_malloc((unsigned int)i+10);
180         if (m == NULL)
181                 {
182                 DSAerr(DSA_F_DSA_PRINT,ERR_R_MALLOC_FAILURE);
183                 goto err;
184                 }
185
186         if (off)
187                 {
188                 if (off > 128) off=128;
189                 memset(str,' ',off);
190                 }
191         if (x->priv_key != NULL)
192                 {
193                 if (off && (BIO_write(bp,str,off) <= 0)) goto err;
194                 if (BIO_printf(bp,"Private-Key: (%d bit)\n",BN_num_bits(x->p))
195                         <= 0) goto err;
196                 }
197
198         if ((x->priv_key != NULL) && !print(bp,"priv:",x->priv_key,m,off))
199                 goto err;
200         if ((x->pub_key  != NULL) && !print(bp,"pub: ",x->pub_key,m,off))
201                 goto err;
202         if ((x->p != NULL) && !print(bp,"P:   ",x->p,m,off)) goto err;
203         if ((x->q != NULL) && !print(bp,"Q:   ",x->q,m,off)) goto err;
204         if ((x->g != NULL) && !print(bp,"G:   ",x->g,m,off)) goto err;
205         ret=1;
206 err:
207         if (m != NULL) OPENSSL_free(m);
208         return(ret);
209         }
210 #endif /* !NO_DSA */
211
212 static int print(BIO *bp, const char *number, BIGNUM *num, unsigned char *buf,
213              int off)
214         {
215         int n,i;
216         char str[128];
217         const char *neg;
218
219         if (num == NULL) return(1);
220         neg=(num->neg)?"-":"";
221         if (off)
222                 {
223                 if (off > 128) off=128;
224                 memset(str,' ',off);
225                 if (BIO_write(bp,str,off) <= 0) return(0);
226                 }
227
228         if (BN_num_bytes(num) <= BN_BYTES)
229                 {
230                 if (BIO_printf(bp,"%s %s%lu (%s0x%lx)\n",number,neg,
231                         (unsigned long)num->d[0],neg,(unsigned long)num->d[0])
232                         <= 0) return(0);
233                 }
234         else
235                 {
236                 buf[0]=0;
237                 if (BIO_printf(bp,"%s%s",number,
238                         (neg[0] == '-')?" (Negative)":"") <= 0)
239                         return(0);
240                 n=BN_bn2bin(num,&buf[1]);
241         
242                 if (buf[1] & 0x80)
243                         n++;
244                 else    buf++;
245
246                 for (i=0; i<n; i++)
247                         {
248                         if ((i%15) == 0)
249                                 {
250                                 str[0]='\n';
251                                 memset(&(str[1]),' ',off+4);
252                                 if (BIO_write(bp,str,off+1+4) <= 0) return(0);
253                                 }
254                         if (BIO_printf(bp,"%02x%s",buf[i],((i+1) == n)?"":":")
255                                 <= 0) return(0);
256                         }
257                 if (BIO_write(bp,"\n",1) <= 0) return(0);
258                 }
259         return(1);
260         }
261
262 #ifndef NO_DH
263 #ifndef NO_FP_API
264 int DHparams_print_fp(FILE *fp, DH *x)
265         {
266         BIO *b;
267         int ret;
268
269         if ((b=BIO_new(BIO_s_file())) == NULL)
270                 {
271                 DHerr(DH_F_DHPARAMS_PRINT_FP,ERR_R_BUF_LIB);
272                 return(0);
273                 }
274         BIO_set_fp(b,fp,BIO_NOCLOSE);
275         ret=DHparams_print(b, x);
276         BIO_free(b);
277         return(ret);
278         }
279 #endif
280
281 int DHparams_print(BIO *bp, DH *x)
282         {
283         unsigned char *m=NULL;
284         int reason=ERR_R_BUF_LIB,i,ret=0;
285
286         i=BN_num_bytes(x->p);
287         m=(unsigned char *)OPENSSL_malloc((unsigned int)i+10);
288         if (m == NULL)
289                 {
290                 reason=ERR_R_MALLOC_FAILURE;
291                 goto err;
292                 }
293
294         if (BIO_printf(bp,"Diffie-Hellman-Parameters: (%d bit)\n",
295                 BN_num_bits(x->p)) <= 0)
296                 goto err;
297         if (!print(bp,"prime:",x->p,m,4)) goto err;
298         if (!print(bp,"generator:",x->g,m,4)) goto err;
299         if (x->length != 0)
300                 {
301                 if (BIO_printf(bp,"    recommended-private-length: %d bits\n",
302                         (int)x->length) <= 0) goto err;
303                 }
304         ret=1;
305         if (0)
306                 {
307 err:
308                 DHerr(DH_F_DHPARAMS_PRINT,reason);
309                 }
310         if (m != NULL) OPENSSL_free(m);
311         return(ret);
312         }
313 #endif
314
315 #ifndef NO_DSA
316 #ifndef NO_FP_API
317 int DSAparams_print_fp(FILE *fp, const DSA *x)
318         {
319         BIO *b;
320         int ret;
321
322         if ((b=BIO_new(BIO_s_file())) == NULL)
323                 {
324                 DSAerr(DSA_F_DSAPARAMS_PRINT_FP,ERR_R_BUF_LIB);
325                 return(0);
326                 }
327         BIO_set_fp(b,fp,BIO_NOCLOSE);
328         ret=DSAparams_print(b, x);
329         BIO_free(b);
330         return(ret);
331         }
332 #endif
333
334 int DSAparams_print(BIO *bp, const DSA *x)
335         {
336         unsigned char *m=NULL;
337         int reason=ERR_R_BUF_LIB,i,ret=0;
338
339         i=BN_num_bytes(x->p);
340         m=(unsigned char *)OPENSSL_malloc((unsigned int)i+10);
341         if (m == NULL)
342                 {
343                 reason=ERR_R_MALLOC_FAILURE;
344                 goto err;
345                 }
346
347         if (BIO_printf(bp,"DSA-Parameters: (%d bit)\n",
348                 BN_num_bits(x->p)) <= 0)
349                 goto err;
350         if (!print(bp,"p:",x->p,m,4)) goto err;
351         if (!print(bp,"q:",x->q,m,4)) goto err;
352         if (!print(bp,"g:",x->g,m,4)) goto err;
353         ret=1;
354 err:
355         if (m != NULL) OPENSSL_free(m);
356         DSAerr(DSA_F_DSAPARAMS_PRINT,reason);
357         return(ret);
358         }
359
360 #endif /* !NO_DSA */
361