t_pkey.c revision 296465 
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
82static int print(BIO *fp, const char *str, const BIGNUM *num,
83                 unsigned char *buf, int off);
84#ifndef OPENSSL_NO_EC
85static int print_bin(BIO *fp, const char *str, const unsigned char *num,
86                     size_t len, int off);
87#endif
88#ifndef OPENSSL_NO_RSA
89# ifndef OPENSSL_NO_FP_API
90int RSA_print_fp(FILE *fp, const RSA *x, int off)
91{
92    BIO *b;
93    int ret;
94
95    if ((b = BIO_new(BIO_s_file())) == NULL) {
96        RSAerr(RSA_F_RSA_PRINT_FP, ERR_R_BUF_LIB);
97        return (0);
98    }
99    BIO_set_fp(b, fp, BIO_NOCLOSE);
100    ret = RSA_print(b, x, off);
101    BIO_free(b);
102    return (ret);
103}
104# endif
105
106int RSA_print(BIO *bp, const RSA *x, int off)
107{
108    char str[128];
109    const char *s;
110    unsigned char *m = NULL;
111    int ret = 0, mod_len = 0;
112    size_t buf_len = 0, i;
113
114    if (x->n)
115        buf_len = (size_t)BN_num_bytes(x->n);
116    if (x->e)
117        if (buf_len < (i = (size_t)BN_num_bytes(x->e)))
118            buf_len = i;
119    if (x->d)
120        if (buf_len < (i = (size_t)BN_num_bytes(x->d)))
121            buf_len = i;
122    if (x->p)
123        if (buf_len < (i = (size_t)BN_num_bytes(x->p)))
124            buf_len = i;
125    if (x->q)
126        if (buf_len < (i = (size_t)BN_num_bytes(x->q)))
127            buf_len = i;
128    if (x->dmp1)
129        if (buf_len < (i = (size_t)BN_num_bytes(x->dmp1)))
130            buf_len = i;
131    if (x->dmq1)
132        if (buf_len < (i = (size_t)BN_num_bytes(x->dmq1)))
133            buf_len = i;
134    if (x->iqmp)
135        if (buf_len < (i = (size_t)BN_num_bytes(x->iqmp)))
136            buf_len = i;
137
138    m = (unsigned char *)OPENSSL_malloc(buf_len + 10);
139    if (m == NULL) {
140        RSAerr(RSA_F_RSA_PRINT, ERR_R_MALLOC_FAILURE);
141        goto err;
142    }
143
144    if (x->n != NULL)
145        mod_len = BN_num_bits(x->n);
146
147    if (x->d != NULL) {
148        if (!BIO_indent(bp, off, 128))
149            goto err;
150        if (BIO_printf(bp, "Private-Key: (%d bit)\n", mod_len)
151            <= 0)
152            goto err;
153    }
154
155    if (x->d == NULL)
156        BIO_snprintf(str, sizeof str, "Modulus (%d bit):", mod_len);
157    else
158        BUF_strlcpy(str, "modulus:", sizeof str);
159    if (!print(bp, str, x->n, m, off))
160        goto err;
161    s = (x->d == NULL) ? "Exponent:" : "publicExponent:";
162    if ((x->e != NULL) && !print(bp, s, x->e, m, off))
163        goto err;
164    if ((x->d != NULL) && !print(bp, "privateExponent:", x->d, m, off))
165        goto err;
166    if ((x->p != NULL) && !print(bp, "prime1:", x->p, m, off))
167        goto err;
168    if ((x->q != NULL) && !print(bp, "prime2:", x->q, m, off))
169        goto err;
170    if ((x->dmp1 != NULL) && !print(bp, "exponent1:", x->dmp1, m, off))
171        goto err;
172    if ((x->dmq1 != NULL) && !print(bp, "exponent2:", x->dmq1, m, off))
173        goto err;
174    if ((x->iqmp != NULL) && !print(bp, "coefficient:", x->iqmp, m, off))
175        goto err;
176    ret = 1;
177 err:
178    if (m != NULL)
179        OPENSSL_free(m);
180    return (ret);
181}
182#endif                          /* OPENSSL_NO_RSA */
183
184#ifndef OPENSSL_NO_DSA
185# ifndef OPENSSL_NO_FP_API
186int DSA_print_fp(FILE *fp, const DSA *x, int off)
187{
188    BIO *b;
189    int ret;
190
191    if ((b = BIO_new(BIO_s_file())) == NULL) {
192        DSAerr(DSA_F_DSA_PRINT_FP, ERR_R_BUF_LIB);
193        return (0);
194    }
195    BIO_set_fp(b, fp, BIO_NOCLOSE);
196    ret = DSA_print(b, x, off);
197    BIO_free(b);
198    return (ret);
199}
200# endif
201
202int DSA_print(BIO *bp, const DSA *x, int off)
203{
204    unsigned char *m = NULL;
205    int ret = 0;
206    size_t buf_len = 0, i;
207
208    if (x->p)
209        buf_len = (size_t)BN_num_bytes(x->p);
210    if (x->q)
211        if (buf_len < (i = (size_t)BN_num_bytes(x->q)))
212            buf_len = i;
213    if (x->g)
214        if (buf_len < (i = (size_t)BN_num_bytes(x->g)))
215            buf_len = i;
216    if (x->priv_key)
217        if (buf_len < (i = (size_t)BN_num_bytes(x->priv_key)))
218            buf_len = i;
219    if (x->pub_key)
220        if (buf_len < (i = (size_t)BN_num_bytes(x->pub_key)))
221            buf_len = i;
222
223    m = (unsigned char *)OPENSSL_malloc(buf_len + 10);
224    if (m == NULL) {
225        DSAerr(DSA_F_DSA_PRINT, ERR_R_MALLOC_FAILURE);
226        goto err;
227    }
228
229    if (x->priv_key != NULL) {
230        if (!BIO_indent(bp, off, 128))
231            goto err;
232        if (BIO_printf(bp, "Private-Key: (%d bit)\n", BN_num_bits(x->p))
233            <= 0)
234            goto err;
235    }
236
237    if ((x->priv_key != NULL) && !print(bp, "priv:", x->priv_key, m, off))
238        goto err;
239    if ((x->pub_key != NULL) && !print(bp, "pub: ", x->pub_key, m, off))
240        goto err;
241    if ((x->p != NULL) && !print(bp, "P:   ", x->p, m, off))
242        goto err;
243    if ((x->q != NULL) && !print(bp, "Q:   ", x->q, m, off))
244        goto err;
245    if ((x->g != NULL) && !print(bp, "G:   ", x->g, m, off))
246        goto err;
247    ret = 1;
248 err:
249    if (m != NULL)
250        OPENSSL_free(m);
251    return (ret);
252}
253#endif                          /* !OPENSSL_NO_DSA */
254
255#ifndef OPENSSL_NO_EC
256# ifndef OPENSSL_NO_FP_API
257int ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x, int off)
258{
259    BIO *b;
260    int ret;
261
262    if ((b = BIO_new(BIO_s_file())) == NULL) {
263        ECerr(EC_F_ECPKPARAMETERS_PRINT_FP, ERR_R_BUF_LIB);
264        return (0);
265    }
266    BIO_set_fp(b, fp, BIO_NOCLOSE);
267    ret = ECPKParameters_print(b, x, off);
268    BIO_free(b);
269    return (ret);
270}
271
272int EC_KEY_print_fp(FILE *fp, const EC_KEY *x, int off)
273{
274    BIO *b;
275    int ret;
276
277    if ((b = BIO_new(BIO_s_file())) == NULL) {
278        ECerr(EC_F_EC_KEY_PRINT_FP, ERR_R_BIO_LIB);
279        return (0);
280    }
281    BIO_set_fp(b, fp, BIO_NOCLOSE);
282    ret = EC_KEY_print(b, x, off);
283    BIO_free(b);
284    return (ret);
285}
286# endif
287
288int ECPKParameters_print(BIO *bp, const EC_GROUP *x, int off)
289{
290    unsigned char *buffer = NULL;
291    size_t buf_len = 0, i;
292    int ret = 0, reason = ERR_R_BIO_LIB;
293    BN_CTX *ctx = NULL;
294    const EC_POINT *point = NULL;
295    BIGNUM *p = NULL, *a = NULL, *b = NULL, *gen = NULL,
296        *order = NULL, *cofactor = NULL;
297    const unsigned char *seed;
298    size_t seed_len = 0;
299
300    static const char *gen_compressed = "Generator (compressed):";
301    static const char *gen_uncompressed = "Generator (uncompressed):";
302    static const char *gen_hybrid = "Generator (hybrid):";
303
304    if (!x) {
305        reason = ERR_R_PASSED_NULL_PARAMETER;
306        goto err;
307    }
308
309    if (EC_GROUP_get_asn1_flag(x)) {
310        /* the curve parameter are given by an asn1 OID */
311        int nid;
312
313        if (!BIO_indent(bp, off, 128))
314            goto err;
315
316        nid = EC_GROUP_get_curve_name(x);
317        if (nid == 0)
318            goto err;
319
320        if (BIO_printf(bp, "ASN1 OID: %s", OBJ_nid2sn(nid)) <= 0)
321            goto err;
322        if (BIO_printf(bp, "\n") <= 0)
323            goto err;
324    } else {
325        /* explicit parameters */
326        int is_char_two = 0;
327        point_conversion_form_t form;
328        int tmp_nid = EC_METHOD_get_field_type(EC_GROUP_method_of(x));
329
330        if (tmp_nid == NID_X9_62_characteristic_two_field)
331            is_char_two = 1;
332
333        if ((p = BN_new()) == NULL || (a = BN_new()) == NULL ||
334            (b = BN_new()) == NULL || (order = BN_new()) == NULL ||
335            (cofactor = BN_new()) == NULL) {
336            reason = ERR_R_MALLOC_FAILURE;
337            goto err;
338        }
339
340        if (is_char_two) {
341            if (!EC_GROUP_get_curve_GF2m(x, p, a, b, ctx)) {
342                reason = ERR_R_EC_LIB;
343                goto err;
344            }
345        } else {                /* prime field */
346
347            if (!EC_GROUP_get_curve_GFp(x, p, a, b, ctx)) {
348                reason = ERR_R_EC_LIB;
349                goto err;
350            }
351        }
352
353        if ((point = EC_GROUP_get0_generator(x)) == NULL) {
354            reason = ERR_R_EC_LIB;
355            goto err;
356        }
357        if (!EC_GROUP_get_order(x, order, NULL) ||
358            !EC_GROUP_get_cofactor(x, cofactor, NULL)) {
359            reason = ERR_R_EC_LIB;
360            goto err;
361        }
362
363        form = EC_GROUP_get_point_conversion_form(x);
364
365        if ((gen = EC_POINT_point2bn(x, point, form, NULL, ctx)) == NULL) {
366            reason = ERR_R_EC_LIB;
367            goto err;
368        }
369
370        buf_len = (size_t)BN_num_bytes(p);
371        if (buf_len < (i = (size_t)BN_num_bytes(a)))
372            buf_len = i;
373        if (buf_len < (i = (size_t)BN_num_bytes(b)))
374            buf_len = i;
375        if (buf_len < (i = (size_t)BN_num_bytes(gen)))
376            buf_len = i;
377        if (buf_len < (i = (size_t)BN_num_bytes(order)))
378            buf_len = i;
379        if (buf_len < (i = (size_t)BN_num_bytes(cofactor)))
380            buf_len = i;
381
382        if ((seed = EC_GROUP_get0_seed(x)) != NULL)
383            seed_len = EC_GROUP_get_seed_len(x);
384
385        buf_len += 10;
386        if ((buffer = OPENSSL_malloc(buf_len)) == NULL) {
387            reason = ERR_R_MALLOC_FAILURE;
388            goto err;
389        }
390
391        if (!BIO_indent(bp, off, 128))
392            goto err;
393
394        /* print the 'short name' of the field type */
395        if (BIO_printf(bp, "Field Type: %s\n", OBJ_nid2sn(tmp_nid))
396            <= 0)
397            goto err;
398
399        if (is_char_two) {
400            /* print the 'short name' of the base type OID */
401            int basis_type = EC_GROUP_get_basis_type(x);
402            if (basis_type == 0)
403                goto err;
404
405            if (!BIO_indent(bp, off, 128))
406                goto err;
407
408            if (BIO_printf(bp, "Basis Type: %s\n",
409                           OBJ_nid2sn(basis_type)) <= 0)
410                goto err;
411
412            /* print the polynomial */
413            if ((p != NULL) && !print(bp, "Polynomial:", p, buffer, off))
414                goto err;
415        } else {
416            if ((p != NULL) && !print(bp, "Prime:", p, buffer, off))
417                goto err;
418        }
419        if ((a != NULL) && !print(bp, "A:   ", a, buffer, off))
420            goto err;
421        if ((b != NULL) && !print(bp, "B:   ", b, buffer, off))
422            goto err;
423        if (form == POINT_CONVERSION_COMPRESSED) {
424            if ((gen != NULL) && !print(bp, gen_compressed, gen, buffer, off))
425                goto err;
426        } else if (form == POINT_CONVERSION_UNCOMPRESSED) {
427            if ((gen != NULL) && !print(bp, gen_uncompressed, gen,
428                                        buffer, off))
429                goto err;
430        } else {                /* form == POINT_CONVERSION_HYBRID */
431
432            if ((gen != NULL) && !print(bp, gen_hybrid, gen, buffer, off))
433                goto err;
434        }
435        if ((order != NULL) && !print(bp, "Order: ", order, buffer, off))
436            goto err;
437        if ((cofactor != NULL) && !print(bp, "Cofactor: ", cofactor,
438                                         buffer, off))
439            goto err;
440        if (seed && !print_bin(bp, "Seed:", seed, seed_len, off))
441            goto err;
442    }
443    ret = 1;
444 err:
445    if (!ret)
446        ECerr(EC_F_ECPKPARAMETERS_PRINT, reason);
447    if (p)
448        BN_free(p);
449    if (a)
450        BN_free(a);
451    if (b)
452        BN_free(b);
453    if (gen)
454        BN_free(gen);
455    if (order)
456        BN_free(order);
457    if (cofactor)
458        BN_free(cofactor);
459    if (ctx)
460        BN_CTX_free(ctx);
461    if (buffer != NULL)
462        OPENSSL_free(buffer);
463    return (ret);
464}
465
466int EC_KEY_print(BIO *bp, const EC_KEY *x, int off)
467{
468    unsigned char *buffer = NULL;
469    size_t buf_len = 0, i;
470    int ret = 0, reason = ERR_R_BIO_LIB;
471    BIGNUM *pub_key = NULL, *order = NULL;
472    BN_CTX *ctx = NULL;
473    const EC_GROUP *group;
474    const EC_POINT *public_key;
475    const BIGNUM *priv_key;
476
477    if (x == NULL || (group = EC_KEY_get0_group(x)) == NULL) {
478        reason = ERR_R_PASSED_NULL_PARAMETER;
479        goto err;
480    }
481
482    public_key = EC_KEY_get0_public_key(x);
483    if ((pub_key = EC_POINT_point2bn(group, public_key,
484                                     EC_KEY_get_conv_form(x), NULL,
485                                     ctx)) == NULL) {
486        reason = ERR_R_EC_LIB;
487        goto err;
488    }
489
490    buf_len = (size_t)BN_num_bytes(pub_key);
491    priv_key = EC_KEY_get0_private_key(x);
492    if (priv_key != NULL) {
493        if ((i = (size_t)BN_num_bytes(priv_key)) > buf_len)
494            buf_len = i;
495    }
496
497    buf_len += 10;
498    if ((buffer = OPENSSL_malloc(buf_len)) == NULL) {
499        reason = ERR_R_MALLOC_FAILURE;
500        goto err;
501    }
502
503    if (priv_key != NULL) {
504        if (!BIO_indent(bp, off, 128))
505            goto err;
506        if ((order = BN_new()) == NULL)
507            goto err;
508        if (!EC_GROUP_get_order(group, order, NULL))
509            goto err;
510        if (BIO_printf(bp, "Private-Key: (%d bit)\n",
511                       BN_num_bits(order)) <= 0)
512            goto err;
513    }
514
515    if ((priv_key != NULL) && !print(bp, "priv:", priv_key, buffer, off))
516        goto err;
517    if ((pub_key != NULL) && !print(bp, "pub: ", pub_key, buffer, off))
518        goto err;
519    if (!ECPKParameters_print(bp, group, off))
520        goto err;
521    ret = 1;
522 err:
523    if (!ret)
524        ECerr(EC_F_EC_KEY_PRINT, reason);
525    if (pub_key)
526        BN_free(pub_key);
527    if (order)
528        BN_free(order);
529    if (ctx)
530        BN_CTX_free(ctx);
531    if (buffer != NULL)
532        OPENSSL_free(buffer);
533    return (ret);
534}
535#endif                          /* OPENSSL_NO_EC */
536
537static int print(BIO *bp, const char *number, const BIGNUM *num,
538                 unsigned char *buf, int off)
539{
540    int n, i;
541    const char *neg;
542
543    if (num == NULL)
544        return (1);
545    neg = (BN_is_negative(num)) ? "-" : "";
546    if (!BIO_indent(bp, off, 128))
547        return 0;
548    if (BN_is_zero(num)) {
549        if (BIO_printf(bp, "%s 0\n", number) <= 0)
550            return 0;
551        return 1;
552    }
553
554    if (BN_num_bytes(num) <= BN_BYTES) {
555        if (BIO_printf(bp, "%s %s%lu (%s0x%lx)\n", number, neg,
556                       (unsigned long)num->d[0], neg,
557                       (unsigned long)num->d[0])
558            <= 0)
559            return (0);
560    } else {
561        buf[0] = 0;
562        if (BIO_printf(bp, "%s%s", number,
563                       (neg[0] == '-') ? " (Negative)" : "") <= 0)
564            return (0);
565        n = BN_bn2bin(num, &buf[1]);
566
567        if (buf[1] & 0x80)
568            n++;
569        else
570            buf++;
571
572        for (i = 0; i < n; i++) {
573            if ((i % 15) == 0) {
574                if (BIO_puts(bp, "\n") <= 0 || !BIO_indent(bp, off + 4, 128))
575                    return 0;
576            }
577            if (BIO_printf(bp, "%02x%s", buf[i], ((i + 1) == n) ? "" : ":")
578                <= 0)
579                return (0);
580        }
581        if (BIO_write(bp, "\n", 1) <= 0)
582            return (0);
583    }
584    return (1);
585}
586
587#ifndef OPENSSL_NO_EC
588static int print_bin(BIO *fp, const char *name, const unsigned char *buf,
589                     size_t len, int off)
590{
591    size_t i;
592    char str[128];
593
594    if (buf == NULL)
595        return 1;
596    if (off) {
597        if (off > 128)
598            off = 128;
599        memset(str, ' ', off);
600        if (BIO_write(fp, str, off) <= 0)
601            return 0;
602    }
603
604    if (BIO_printf(fp, "%s", name) <= 0)
605        return 0;
606
607    for (i = 0; i < len; i++) {
608        if ((i % 15) == 0) {
609            str[0] = '\n';
610            memset(&(str[1]), ' ', off + 4);
611            if (BIO_write(fp, str, off + 1 + 4) <= 0)
612                return 0;
613        }
614        if (BIO_printf(fp, "%02x%s", buf[i], ((i + 1) == len) ? "" : ":") <=
615            0)
616            return 0;
617    }
618    if (BIO_write(fp, "\n", 1) <= 0)
619        return 0;
620
621    return 1;
622}
623#endif
624
625#ifndef OPENSSL_NO_DH
626# ifndef OPENSSL_NO_FP_API
627int DHparams_print_fp(FILE *fp, const DH *x)
628{
629    BIO *b;
630    int ret;
631
632    if ((b = BIO_new(BIO_s_file())) == NULL) {
633        DHerr(DH_F_DHPARAMS_PRINT_FP, ERR_R_BUF_LIB);
634        return (0);
635    }
636    BIO_set_fp(b, fp, BIO_NOCLOSE);
637    ret = DHparams_print(b, x);
638    BIO_free(b);
639    return (ret);
640}
641# endif
642
643int DHparams_print(BIO *bp, const DH *x)
644{
645    unsigned char *m = NULL;
646    int reason = ERR_R_BUF_LIB, ret = 0;
647    size_t buf_len = 0, i;
648
649    if (x->p)
650        buf_len = (size_t)BN_num_bytes(x->p);
651    else {
652        reason = ERR_R_PASSED_NULL_PARAMETER;
653        goto err;
654    }
655    if (x->g)
656        if (buf_len < (i = (size_t)BN_num_bytes(x->g)))
657            buf_len = i;
658    m = (unsigned char *)OPENSSL_malloc(buf_len + 10);
659    if (m == NULL) {
660        reason = ERR_R_MALLOC_FAILURE;
661        goto err;
662    }
663
664    if (BIO_printf(bp, "Diffie-Hellman-Parameters: (%d bit)\n",
665                   BN_num_bits(x->p)) <= 0)
666        goto err;
667    if (!print(bp, "prime:", x->p, m, 4))
668        goto err;
669    if (!print(bp, "generator:", x->g, m, 4))
670        goto err;
671    if (x->length != 0) {
672        if (BIO_printf(bp, "    recommended-private-length: %d bits\n",
673                       (int)x->length) <= 0)
674            goto err;
675    }
676    ret = 1;
677    if (0) {
678 err:
679        DHerr(DH_F_DHPARAMS_PRINT, reason);
680    }
681    if (m != NULL)
682        OPENSSL_free(m);
683    return (ret);
684}
685#endif
686
687#ifndef OPENSSL_NO_DSA
688# ifndef OPENSSL_NO_FP_API
689int DSAparams_print_fp(FILE *fp, const DSA *x)
690{
691    BIO *b;
692    int ret;
693
694    if ((b = BIO_new(BIO_s_file())) == NULL) {
695        DSAerr(DSA_F_DSAPARAMS_PRINT_FP, ERR_R_BUF_LIB);
696        return (0);
697    }
698    BIO_set_fp(b, fp, BIO_NOCLOSE);
699    ret = DSAparams_print(b, x);
700    BIO_free(b);
701    return (ret);
702}
703# endif
704
705int DSAparams_print(BIO *bp, const DSA *x)
706{
707    unsigned char *m = NULL;
708    int ret = 0;
709    size_t buf_len = 0, i;
710
711    if (x->p)
712        buf_len = (size_t)BN_num_bytes(x->p);
713    else {
714        DSAerr(DSA_F_DSAPARAMS_PRINT, DSA_R_MISSING_PARAMETERS);
715        goto err;
716    }
717    if (x->q)
718        if (buf_len < (i = (size_t)BN_num_bytes(x->q)))
719            buf_len = i;
720    if (x->g)
721        if (buf_len < (i = (size_t)BN_num_bytes(x->g)))
722            buf_len = i;
723    m = (unsigned char *)OPENSSL_malloc(buf_len + 10);
724    if (m == NULL) {
725        DSAerr(DSA_F_DSAPARAMS_PRINT, ERR_R_MALLOC_FAILURE);
726        goto err;
727    }
728
729    if (BIO_printf(bp, "DSA-Parameters: (%d bit)\n", BN_num_bits(x->p)) <= 0)
730        goto err;
731    if (!print(bp, "p:", x->p, m, 4))
732        goto err;
733    if ((x->q != NULL) && !print(bp, "q:", x->q, m, 4))
734        goto err;
735    if ((x->g != NULL) && !print(bp, "g:", x->g, m, 4))
736        goto err;
737    ret = 1;
738 err:
739    if (m != NULL)
740        OPENSSL_free(m);
741    return (ret);
742}
743
744#endif                          /* !OPENSSL_NO_DSA */
745
746#ifndef OPENSSL_NO_EC
747# ifndef OPENSSL_NO_FP_API
748int ECParameters_print_fp(FILE *fp, const EC_KEY *x)
749{
750    BIO *b;
751    int ret;
752
753    if ((b = BIO_new(BIO_s_file())) == NULL) {
754        ECerr(EC_F_ECPARAMETERS_PRINT_FP, ERR_R_BIO_LIB);
755        return (0);
756    }
757    BIO_set_fp(b, fp, BIO_NOCLOSE);
758    ret = ECParameters_print(b, x);
759    BIO_free(b);
760    return (ret);
761}
762# endif
763
764int ECParameters_print(BIO *bp, const EC_KEY *x)
765{
766    int reason = ERR_R_EC_LIB, ret = 0;
767    BIGNUM *order = NULL;
768    const EC_GROUP *group;
769
770    if (x == NULL || (group = EC_KEY_get0_group(x)) == NULL) {
771        reason = ERR_R_PASSED_NULL_PARAMETER;;
772        goto err;
773    }
774
775    if ((order = BN_new()) == NULL) {
776        reason = ERR_R_MALLOC_FAILURE;
777        goto err;
778    }
779
780    if (!EC_GROUP_get_order(group, order, NULL)) {
781        reason = ERR_R_EC_LIB;
782        goto err;
783    }
784
785    if (BIO_printf(bp, "ECDSA-Parameters: (%d bit)\n",
786                   BN_num_bits(order)) <= 0)
787        goto err;
788    if (!ECPKParameters_print(bp, group, 4))
789        goto err;
790    ret = 1;
791 err:
792    if (order)
793        BN_free(order);
794    ECerr(EC_F_ECPARAMETERS_PRINT, reason);
795    return (ret);
796}
797
798#endif
799