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1b593194 | 1 | /* crypto/ec/eck_prn.c */ |
a4e75b3d DSH |
2 | /* |
3 | * Written by Nils Larsch for the OpenSSL project. | |
4 | */ | |
5 | /* ==================================================================== | |
6 | * Copyright (c) 1998-2005 The OpenSSL Project. All rights reserved. | |
1b593194 | 7 | * |
1b593194 DSH |
8 | * Redistribution and use in source and binary forms, with or without |
9 | * modification, are permitted provided that the following conditions | |
10 | * are met: | |
a4e75b3d DSH |
11 | * |
12 | * 1. Redistributions of source code must retain the above copyright | |
13 | * notice, this list of conditions and the following disclaimer. | |
14 | * | |
1b593194 | 15 | * 2. Redistributions in binary form must reproduce the above copyright |
a4e75b3d DSH |
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 | * | |
1b593194 DSH |
57 | */ |
58 | /* ==================================================================== | |
59 | * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. | |
a4e75b3d DSH |
60 | * Portions originally developed by SUN MICROSYSTEMS, INC., and |
61 | * contributed to the OpenSSL project. | |
1b593194 DSH |
62 | */ |
63 | ||
64 | #include <stdio.h> | |
65 | #include "cryptlib.h" | |
66 | #include <openssl/evp.h> | |
67 | #include <openssl/ec.h> | |
1e26a8ba | 68 | #include <openssl/bn.h> |
1b593194 | 69 | |
4b618848 | 70 | #ifndef OPENSSL_NO_STDIO |
1b593194 DSH |
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; | |
64095ce9 | 180 | const char *nname; |
1b593194 DSH |
181 | |
182 | if (!BIO_indent(bp, off, 128)) | |
183 | goto err; | |
184 | ||
185 | nid = EC_GROUP_get_curve_name(x); | |
186 | if (nid == 0) | |
187 | goto err; | |
1b593194 DSH |
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; | |
64095ce9 DSH |
192 | nname = EC_curve_nid2nist(nid); |
193 | if (nname) | |
194 | { | |
195 | if (!BIO_indent(bp, off, 128)) | |
196 | goto err; | |
197 | if (BIO_printf(bp, "NIST CURVE: %s\n", nname) <= 0) | |
198 | goto err; | |
199 | } | |
1b593194 DSH |
200 | } |
201 | else | |
202 | { | |
203 | /* explicit parameters */ | |
204 | int is_char_two = 0; | |
205 | point_conversion_form_t form; | |
206 | int tmp_nid = EC_METHOD_get_field_type(EC_GROUP_method_of(x)); | |
207 | ||
208 | if (tmp_nid == NID_X9_62_characteristic_two_field) | |
209 | is_char_two = 1; | |
210 | ||
211 | if ((p = BN_new()) == NULL || (a = BN_new()) == NULL || | |
212 | (b = BN_new()) == NULL || (order = BN_new()) == NULL || | |
213 | (cofactor = BN_new()) == NULL) | |
214 | { | |
215 | reason = ERR_R_MALLOC_FAILURE; | |
216 | goto err; | |
217 | } | |
b3310161 | 218 | #ifndef OPENSSL_NO_EC2M |
1b593194 DSH |
219 | if (is_char_two) |
220 | { | |
221 | if (!EC_GROUP_get_curve_GF2m(x, p, a, b, ctx)) | |
222 | { | |
223 | reason = ERR_R_EC_LIB; | |
224 | goto err; | |
225 | } | |
226 | } | |
227 | else /* prime field */ | |
b3310161 | 228 | #endif |
1b593194 DSH |
229 | { |
230 | if (!EC_GROUP_get_curve_GFp(x, p, a, b, ctx)) | |
231 | { | |
232 | reason = ERR_R_EC_LIB; | |
233 | goto err; | |
234 | } | |
235 | } | |
236 | ||
237 | if ((point = EC_GROUP_get0_generator(x)) == NULL) | |
238 | { | |
239 | reason = ERR_R_EC_LIB; | |
240 | goto err; | |
241 | } | |
242 | if (!EC_GROUP_get_order(x, order, NULL) || | |
243 | !EC_GROUP_get_cofactor(x, cofactor, NULL)) | |
244 | { | |
245 | reason = ERR_R_EC_LIB; | |
246 | goto err; | |
247 | } | |
248 | ||
249 | form = EC_GROUP_get_point_conversion_form(x); | |
250 | ||
251 | if ((gen = EC_POINT_point2bn(x, point, | |
252 | form, NULL, ctx)) == NULL) | |
253 | { | |
254 | reason = ERR_R_EC_LIB; | |
255 | goto err; | |
256 | } | |
257 | ||
258 | buf_len = (size_t)BN_num_bytes(p); | |
259 | if (buf_len < (i = (size_t)BN_num_bytes(a))) | |
260 | buf_len = i; | |
261 | if (buf_len < (i = (size_t)BN_num_bytes(b))) | |
262 | buf_len = i; | |
263 | if (buf_len < (i = (size_t)BN_num_bytes(gen))) | |
264 | buf_len = i; | |
265 | if (buf_len < (i = (size_t)BN_num_bytes(order))) | |
266 | buf_len = i; | |
267 | if (buf_len < (i = (size_t)BN_num_bytes(cofactor))) | |
268 | buf_len = i; | |
269 | ||
270 | if ((seed = EC_GROUP_get0_seed(x)) != NULL) | |
271 | seed_len = EC_GROUP_get_seed_len(x); | |
272 | ||
273 | buf_len += 10; | |
274 | if ((buffer = OPENSSL_malloc(buf_len)) == NULL) | |
275 | { | |
276 | reason = ERR_R_MALLOC_FAILURE; | |
277 | goto err; | |
278 | } | |
279 | ||
280 | if (!BIO_indent(bp, off, 128)) | |
281 | goto err; | |
282 | ||
283 | /* print the 'short name' of the field type */ | |
284 | if (BIO_printf(bp, "Field Type: %s\n", OBJ_nid2sn(tmp_nid)) | |
285 | <= 0) | |
286 | goto err; | |
287 | ||
288 | if (is_char_two) | |
289 | { | |
290 | /* print the 'short name' of the base type OID */ | |
291 | int basis_type = EC_GROUP_get_basis_type(x); | |
292 | if (basis_type == 0) | |
293 | goto err; | |
294 | ||
295 | if (!BIO_indent(bp, off, 128)) | |
296 | goto err; | |
297 | ||
298 | if (BIO_printf(bp, "Basis Type: %s\n", | |
299 | OBJ_nid2sn(basis_type)) <= 0) | |
300 | goto err; | |
301 | ||
302 | /* print the polynomial */ | |
303 | if ((p != NULL) && !ASN1_bn_print(bp, "Polynomial:", p, buffer, | |
304 | off)) | |
305 | goto err; | |
306 | } | |
307 | else | |
308 | { | |
309 | if ((p != NULL) && !ASN1_bn_print(bp, "Prime:", p, buffer,off)) | |
310 | goto err; | |
311 | } | |
312 | if ((a != NULL) && !ASN1_bn_print(bp, "A: ", a, buffer, off)) | |
313 | goto err; | |
314 | if ((b != NULL) && !ASN1_bn_print(bp, "B: ", b, buffer, off)) | |
315 | goto err; | |
316 | if (form == POINT_CONVERSION_COMPRESSED) | |
317 | { | |
318 | if ((gen != NULL) && !ASN1_bn_print(bp, gen_compressed, gen, | |
319 | buffer, off)) | |
320 | goto err; | |
321 | } | |
322 | else if (form == POINT_CONVERSION_UNCOMPRESSED) | |
323 | { | |
324 | if ((gen != NULL) && !ASN1_bn_print(bp, gen_uncompressed, gen, | |
325 | buffer, off)) | |
326 | goto err; | |
327 | } | |
328 | else /* form == POINT_CONVERSION_HYBRID */ | |
329 | { | |
330 | if ((gen != NULL) && !ASN1_bn_print(bp, gen_hybrid, gen, | |
331 | buffer, off)) | |
332 | goto err; | |
333 | } | |
334 | if ((order != NULL) && !ASN1_bn_print(bp, "Order: ", order, | |
335 | buffer, off)) goto err; | |
336 | if ((cofactor != NULL) && !ASN1_bn_print(bp, "Cofactor: ", cofactor, | |
337 | buffer, off)) goto err; | |
338 | if (seed && !print_bin(bp, "Seed:", seed, seed_len, off)) | |
339 | goto err; | |
340 | } | |
341 | ret=1; | |
342 | err: | |
343 | if (!ret) | |
344 | ECerr(EC_F_ECPKPARAMETERS_PRINT, reason); | |
345 | if (p) | |
346 | BN_free(p); | |
347 | if (a) | |
348 | BN_free(a); | |
349 | if (b) | |
350 | BN_free(b); | |
351 | if (gen) | |
352 | BN_free(gen); | |
353 | if (order) | |
354 | BN_free(order); | |
355 | if (cofactor) | |
356 | BN_free(cofactor); | |
357 | if (ctx) | |
358 | BN_CTX_free(ctx); | |
359 | if (buffer != NULL) | |
360 | OPENSSL_free(buffer); | |
361 | return(ret); | |
362 | } | |
363 | ||
364 | static int print_bin(BIO *fp, const char *name, const unsigned char *buf, | |
365 | size_t len, int off) | |
366 | { | |
367 | size_t i; | |
368 | char str[128]; | |
369 | ||
370 | if (buf == NULL) | |
371 | return 1; | |
372 | if (off) | |
373 | { | |
374 | if (off > 128) | |
375 | off=128; | |
376 | memset(str,' ',off); | |
377 | if (BIO_write(fp, str, off) <= 0) | |
378 | return 0; | |
379 | } | |
380 | ||
381 | if (BIO_printf(fp,"%s", name) <= 0) | |
382 | return 0; | |
383 | ||
384 | for (i=0; i<len; i++) | |
385 | { | |
386 | if ((i%15) == 0) | |
387 | { | |
388 | str[0]='\n'; | |
389 | memset(&(str[1]),' ',off+4); | |
390 | if (BIO_write(fp, str, off+1+4) <= 0) | |
391 | return 0; | |
392 | } | |
393 | if (BIO_printf(fp,"%02x%s",buf[i],((i+1) == len)?"":":") <= 0) | |
394 | return 0; | |
395 | } | |
396 | if (BIO_write(fp,"\n",1) <= 0) | |
397 | return 0; | |
398 | ||
399 | return 1; | |
400 | } |