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diff --git a/src/lib/libcrypto/ec/eck_prn.c b/src/lib/libcrypto/ec/eck_prn.c
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1/* crypto/ec/eck_prn.c */
2/*
3 * Written by Nils Larsch for the OpenSSL project.
4 */
5/* ====================================================================
6 * Copyright (c) 1998-2005 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * openssl-core@openssl.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58/* ====================================================================
59 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
60 * Portions originally developed by SUN MICROSYSTEMS, INC., and
61 * contributed to the OpenSSL project.
62 */
63
64#include <stdio.h>
65#include "cryptlib.h"
66#include <openssl/evp.h>
67#include <openssl/ec.h>
68#include <openssl/bn.h>
69
70#ifndef OPENSSL_NO_FP_API
71int ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x, int off)
72 {
73 BIO *b;
74 int ret;
75
76 if ((b=BIO_new(BIO_s_file())) == NULL)
77 {
78 ECerr(EC_F_ECPKPARAMETERS_PRINT_FP,ERR_R_BUF_LIB);
79 return(0);
80 }
81 BIO_set_fp(b, fp, BIO_NOCLOSE);
82 ret = ECPKParameters_print(b, x, off);
83 BIO_free(b);
84 return(ret);
85 }
86
87int EC_KEY_print_fp(FILE *fp, const EC_KEY *x, int off)
88 {
89 BIO *b;
90 int ret;
91
92 if ((b=BIO_new(BIO_s_file())) == NULL)
93 {
94 ECerr(EC_F_EC_KEY_PRINT_FP, ERR_R_BIO_LIB);
95 return(0);
96 }
97 BIO_set_fp(b, fp, BIO_NOCLOSE);
98 ret = EC_KEY_print(b, x, off);
99 BIO_free(b);
100 return(ret);
101 }
102
103int ECParameters_print_fp(FILE *fp, const EC_KEY *x)
104 {
105 BIO *b;
106 int ret;
107
108 if ((b=BIO_new(BIO_s_file())) == NULL)
109 {
110 ECerr(EC_F_ECPARAMETERS_PRINT_FP, ERR_R_BIO_LIB);
111 return(0);
112 }
113 BIO_set_fp(b, fp, BIO_NOCLOSE);
114 ret = ECParameters_print(b, x);
115 BIO_free(b);
116 return(ret);
117 }
118#endif
119
120int EC_KEY_print(BIO *bp, const EC_KEY *x, int off)
121 {
122 EVP_PKEY *pk;
123 int ret;
124 pk = EVP_PKEY_new();
125 if (!pk || !EVP_PKEY_set1_EC_KEY(pk, (EC_KEY *)x))
126 return 0;
127 ret = EVP_PKEY_print_private(bp, pk, off, NULL);
128 EVP_PKEY_free(pk);
129 return ret;
130 }
131
132int ECParameters_print(BIO *bp, const EC_KEY *x)
133 {
134 EVP_PKEY *pk;
135 int ret;
136 pk = EVP_PKEY_new();
137 if (!pk || !EVP_PKEY_set1_EC_KEY(pk, (EC_KEY *)x))
138 return 0;
139 ret = EVP_PKEY_print_params(bp, pk, 4, NULL);
140 EVP_PKEY_free(pk);
141 return ret;
142 }
143
144static int print_bin(BIO *fp, const char *str, const unsigned char *num,
145 size_t len, int off);
146
147int ECPKParameters_print(BIO *bp, const EC_GROUP *x, int off)
148 {
149 unsigned char *buffer=NULL;
150 size_t buf_len=0, i;
151 int ret=0, reason=ERR_R_BIO_LIB;
152 BN_CTX *ctx=NULL;
153 const EC_POINT *point=NULL;
154 BIGNUM *p=NULL, *a=NULL, *b=NULL, *gen=NULL,
155 *order=NULL, *cofactor=NULL;
156 const unsigned char *seed;
157 size_t seed_len=0;
158
159 static const char *gen_compressed = "Generator (compressed):";
160 static const char *gen_uncompressed = "Generator (uncompressed):";
161 static const char *gen_hybrid = "Generator (hybrid):";
162
163 if (!x)
164 {
165 reason = ERR_R_PASSED_NULL_PARAMETER;
166 goto err;
167 }
168
169 ctx = BN_CTX_new();
170 if (ctx == NULL)
171 {
172 reason = ERR_R_MALLOC_FAILURE;
173 goto err;
174 }
175
176 if (EC_GROUP_get_asn1_flag(x))
177 {
178 /* the curve parameter are given by an asn1 OID */
179 int nid;
180
181 if (!BIO_indent(bp, off, 128))
182 goto err;
183
184 nid = EC_GROUP_get_curve_name(x);
185 if (nid == 0)
186 goto err;
187
188 if (BIO_printf(bp, "ASN1 OID: %s", OBJ_nid2sn(nid)) <= 0)
189 goto err;
190 if (BIO_printf(bp, "\n") <= 0)
191 goto err;
192 }
193 else
194 {
195 /* explicit parameters */
196 int is_char_two = 0;
197 point_conversion_form_t form;
198 int tmp_nid = EC_METHOD_get_field_type(EC_GROUP_method_of(x));
199
200 if (tmp_nid == NID_X9_62_characteristic_two_field)
201 is_char_two = 1;
202
203 if ((p = BN_new()) == NULL || (a = BN_new()) == NULL ||
204 (b = BN_new()) == NULL || (order = BN_new()) == NULL ||
205 (cofactor = BN_new()) == NULL)
206 {
207 reason = ERR_R_MALLOC_FAILURE;
208 goto err;
209 }
210#ifndef OPENSSL_NO_EC2M
211 if (is_char_two)
212 {
213 if (!EC_GROUP_get_curve_GF2m(x, p, a, b, ctx))
214 {
215 reason = ERR_R_EC_LIB;
216 goto err;
217 }
218 }
219 else /* prime field */
220#endif
221 {
222 if (!EC_GROUP_get_curve_GFp(x, p, a, b, ctx))
223 {
224 reason = ERR_R_EC_LIB;
225 goto err;
226 }
227 }
228
229 if ((point = EC_GROUP_get0_generator(x)) == NULL)
230 {
231 reason = ERR_R_EC_LIB;
232 goto err;
233 }
234 if (!EC_GROUP_get_order(x, order, NULL) ||
235 !EC_GROUP_get_cofactor(x, cofactor, NULL))
236 {
237 reason = ERR_R_EC_LIB;
238 goto err;
239 }
240
241 form = EC_GROUP_get_point_conversion_form(x);
242
243 if ((gen = EC_POINT_point2bn(x, point,
244 form, NULL, ctx)) == NULL)
245 {
246 reason = ERR_R_EC_LIB;
247 goto err;
248 }
249
250 buf_len = (size_t)BN_num_bytes(p);
251 if (buf_len < (i = (size_t)BN_num_bytes(a)))
252 buf_len = i;
253 if (buf_len < (i = (size_t)BN_num_bytes(b)))
254 buf_len = i;
255 if (buf_len < (i = (size_t)BN_num_bytes(gen)))
256 buf_len = i;
257 if (buf_len < (i = (size_t)BN_num_bytes(order)))
258 buf_len = i;
259 if (buf_len < (i = (size_t)BN_num_bytes(cofactor)))
260 buf_len = i;
261
262 if ((seed = EC_GROUP_get0_seed(x)) != NULL)
263 seed_len = EC_GROUP_get_seed_len(x);
264
265 buf_len += 10;
266 if ((buffer = OPENSSL_malloc(buf_len)) == NULL)
267 {
268 reason = ERR_R_MALLOC_FAILURE;
269 goto err;
270 }
271
272 if (!BIO_indent(bp, off, 128))
273 goto err;
274
275 /* print the 'short name' of the field type */
276 if (BIO_printf(bp, "Field Type: %s\n", OBJ_nid2sn(tmp_nid))
277 <= 0)
278 goto err;
279
280 if (is_char_two)
281 {
282 /* print the 'short name' of the base type OID */
283 int basis_type = EC_GROUP_get_basis_type(x);
284 if (basis_type == 0)
285 goto err;
286
287 if (!BIO_indent(bp, off, 128))
288 goto err;
289
290 if (BIO_printf(bp, "Basis Type: %s\n",
291 OBJ_nid2sn(basis_type)) <= 0)
292 goto err;
293
294 /* print the polynomial */
295 if ((p != NULL) && !ASN1_bn_print(bp, "Polynomial:", p, buffer,
296 off))
297 goto err;
298 }
299 else
300 {
301 if ((p != NULL) && !ASN1_bn_print(bp, "Prime:", p, buffer,off))
302 goto err;
303 }
304 if ((a != NULL) && !ASN1_bn_print(bp, "A: ", a, buffer, off))
305 goto err;
306 if ((b != NULL) && !ASN1_bn_print(bp, "B: ", b, buffer, off))
307 goto err;
308 if (form == POINT_CONVERSION_COMPRESSED)
309 {
310 if ((gen != NULL) && !ASN1_bn_print(bp, gen_compressed, gen,
311 buffer, off))
312 goto err;
313 }
314 else if (form == POINT_CONVERSION_UNCOMPRESSED)
315 {
316 if ((gen != NULL) && !ASN1_bn_print(bp, gen_uncompressed, gen,
317 buffer, off))
318 goto err;
319 }
320 else /* form == POINT_CONVERSION_HYBRID */
321 {
322 if ((gen != NULL) && !ASN1_bn_print(bp, gen_hybrid, gen,
323 buffer, off))
324 goto err;
325 }
326 if ((order != NULL) && !ASN1_bn_print(bp, "Order: ", order,
327 buffer, off)) goto err;
328 if ((cofactor != NULL) && !ASN1_bn_print(bp, "Cofactor: ", cofactor,
329 buffer, off)) goto err;
330 if (seed && !print_bin(bp, "Seed:", seed, seed_len, off))
331 goto err;
332 }
333 ret=1;
334err:
335 if (!ret)
336 ECerr(EC_F_ECPKPARAMETERS_PRINT, reason);
337 if (p)
338 BN_free(p);
339 if (a)
340 BN_free(a);
341 if (b)
342 BN_free(b);
343 if (gen)
344 BN_free(gen);
345 if (order)
346 BN_free(order);
347 if (cofactor)
348 BN_free(cofactor);
349 if (ctx)
350 BN_CTX_free(ctx);
351 if (buffer != NULL)
352 OPENSSL_free(buffer);
353 return(ret);
354 }
355
356static int print_bin(BIO *fp, const char *name, const unsigned char *buf,
357 size_t len, int off)
358 {
359 size_t i;
360 char str[128];
361
362 if (buf == NULL)
363 return 1;
364 if (off)
365 {
366 if (off > 128)
367 off=128;
368 memset(str,' ',off);
369 if (BIO_write(fp, str, off) <= 0)
370 return 0;
371 }
372
373 if (BIO_printf(fp,"%s", name) <= 0)
374 return 0;
375
376 for (i=0; i<len; i++)
377 {
378 if ((i%15) == 0)
379 {
380 str[0]='\n';
381 memset(&(str[1]),' ',off+4);
382 if (BIO_write(fp, str, off+1+4) <= 0)
383 return 0;
384 }
385 if (BIO_printf(fp,"%02x%s",buf[i],((i+1) == len)?"":":") <= 0)
386 return 0;
387 }
388 if (BIO_write(fp,"\n",1) <= 0)
389 return 0;
390
391 return 1;
392 }
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