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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 | |
71 int 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 | |
87 int 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 | |
103 int 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 | |
120 int 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 | |
132 int 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 | |
144 static int print_bin(BIO *fp, const char *str, const unsigned char *num, | |
145 size_t len, int off); | |
146 | |
147 int 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, buffe
r,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: ", cofac
tor, | |
329 buffer, off)) goto err; | |
330 if (seed && !print_bin(bp, "Seed:", seed, seed_len, off)) | |
331 goto err; | |
332 } | |
333 ret=1; | |
334 err: | |
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 | |
356 static 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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