]>
Commit | Line | Data |
---|---|---|
14a7cfb3 | 1 | /* |
6738bf14 | 2 | * Copyright 2002-2018 The OpenSSL Project Authors. All Rights Reserved. |
aa8f3d76 | 3 | * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved |
5dbd3efc | 4 | * |
846e33c7 RS |
5 | * Licensed under the OpenSSL license (the "License"). You may not use |
6 | * this file except in compliance with the License. You can obtain a copy | |
7 | * in the file LICENSE in the source distribution or at | |
8 | * https://www.openssl.org/source/license.html | |
5dbd3efc | 9 | */ |
846e33c7 | 10 | |
6e04afb8 | 11 | #include <openssl/opensslconf.h> |
effaf4de RS |
12 | #ifdef OPENSSL_NO_EC |
13 | NON_EMPTY_TRANSLATION_UNIT | |
14 | #else | |
15 | ||
0f113f3e MC |
16 | # include <stdio.h> |
17 | # include <stdlib.h> | |
18 | # include <time.h> | |
19 | # include <string.h> | |
20 | # include "apps.h" | |
dab2cd68 | 21 | # include "progs.h" |
0f113f3e MC |
22 | # include <openssl/bio.h> |
23 | # include <openssl/err.h> | |
24 | # include <openssl/bn.h> | |
25 | # include <openssl/ec.h> | |
26 | # include <openssl/x509.h> | |
27 | # include <openssl/pem.h> | |
28 | ||
7e1b7485 RS |
29 | typedef enum OPTION_choice { |
30 | OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, | |
31 | OPT_INFORM, OPT_OUTFORM, OPT_IN, OPT_OUT, OPT_TEXT, OPT_C, | |
32 | OPT_CHECK, OPT_LIST_CURVES, OPT_NO_SEED, OPT_NOOUT, OPT_NAME, | |
3ee1eac2 RS |
33 | OPT_CONV_FORM, OPT_PARAM_ENC, OPT_GENKEY, OPT_ENGINE, |
34 | OPT_R_ENUM | |
7e1b7485 RS |
35 | } OPTION_CHOICE; |
36 | ||
44c83ebd | 37 | const OPTIONS ecparam_options[] = { |
7e1b7485 RS |
38 | {"help", OPT_HELP, '-', "Display this summary"}, |
39 | {"inform", OPT_INFORM, 'F', "Input format - default PEM (DER or PEM)"}, | |
40 | {"outform", OPT_OUTFORM, 'F', "Output format - default PEM"}, | |
41 | {"in", OPT_IN, '<', "Input file - default stdin"}, | |
42 | {"out", OPT_OUT, '>', "Output file - default stdout"}, | |
43 | {"text", OPT_TEXT, '-', "Print the ec parameters in text form"}, | |
44 | {"C", OPT_C, '-', "Print a 'C' function creating the parameters"}, | |
45 | {"check", OPT_CHECK, '-', "Validate the ec parameters"}, | |
46 | {"list_curves", OPT_LIST_CURVES, '-', | |
47 | "Prints a list of all curve 'short names'"}, | |
48 | {"no_seed", OPT_NO_SEED, '-', | |
49 | "If 'explicit' parameters are chosen do not use the seed"}, | |
50 | {"noout", OPT_NOOUT, '-', "Do not print the ec parameter"}, | |
51 | {"name", OPT_NAME, 's', | |
52 | "Use the ec parameters with specified 'short name'"}, | |
53 | {"conv_form", OPT_CONV_FORM, 's', "Specifies the point conversion form "}, | |
54 | {"param_enc", OPT_PARAM_ENC, 's', | |
55 | "Specifies the way the ec parameters are encoded"}, | |
56 | {"genkey", OPT_GENKEY, '-', "Generate ec key"}, | |
3ee1eac2 | 57 | OPT_R_OPTIONS, |
7e1b7485 RS |
58 | # ifndef OPENSSL_NO_ENGINE |
59 | {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"}, | |
60 | # endif | |
61 | {NULL} | |
62 | }; | |
63 | ||
df2ee0e2 | 64 | static OPT_PAIR forms[] = { |
7e1b7485 RS |
65 | {"compressed", POINT_CONVERSION_COMPRESSED}, |
66 | {"uncompressed", POINT_CONVERSION_UNCOMPRESSED}, | |
67 | {"hybrid", POINT_CONVERSION_HYBRID}, | |
68 | {NULL} | |
69 | }; | |
70 | ||
df2ee0e2 | 71 | static OPT_PAIR encodings[] = { |
7e1b7485 RS |
72 | {"named_curve", OPENSSL_EC_NAMED_CURVE}, |
73 | {"explicit", 0}, | |
74 | {NULL} | |
75 | }; | |
76 | ||
77 | int ecparam_main(int argc, char **argv) | |
0f113f3e | 78 | { |
dd1abd44 | 79 | ENGINE *e = NULL; |
7e1b7485 RS |
80 | BIGNUM *ec_gen = NULL, *ec_order = NULL, *ec_cofactor = NULL; |
81 | BIGNUM *ec_p = NULL, *ec_a = NULL, *ec_b = NULL; | |
82 | BIO *in = NULL, *out = NULL; | |
0f113f3e MC |
83 | EC_GROUP *group = NULL; |
84 | point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED; | |
3ee1eac2 | 85 | char *curve_name = NULL; |
333b070e | 86 | char *infile = NULL, *outfile = NULL, *prog; |
0f113f3e | 87 | unsigned char *buffer = NULL; |
7e1b7485 RS |
88 | OPTION_CHOICE o; |
89 | int asn1_flag = OPENSSL_EC_NAMED_CURVE, new_asn1_flag = 0; | |
3b061a00 RS |
90 | int informat = FORMAT_PEM, outformat = FORMAT_PEM, noout = 0, C = 0; |
91 | int ret = 1, private = 0; | |
7e1b7485 | 92 | int list_curves = 0, no_seed = 0, check = 0, new_form = 0; |
3ee1eac2 | 93 | int text = 0, i, genkey = 0; |
7e1b7485 RS |
94 | |
95 | prog = opt_init(argc, argv, ecparam_options); | |
96 | while ((o = opt_next()) != OPT_EOF) { | |
97 | switch (o) { | |
98 | case OPT_EOF: | |
99 | case OPT_ERR: | |
100 | opthelp: | |
101 | BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); | |
102 | goto end; | |
103 | case OPT_HELP: | |
104 | opt_help(ecparam_options); | |
105 | ret = 0; | |
106 | goto end; | |
107 | case OPT_INFORM: | |
108 | if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat)) | |
109 | goto opthelp; | |
110 | break; | |
111 | case OPT_IN: | |
112 | infile = opt_arg(); | |
113 | break; | |
114 | case OPT_OUTFORM: | |
115 | if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat)) | |
116 | goto opthelp; | |
117 | break; | |
118 | case OPT_OUT: | |
119 | outfile = opt_arg(); | |
120 | break; | |
121 | case OPT_TEXT: | |
0f113f3e | 122 | text = 1; |
7e1b7485 RS |
123 | break; |
124 | case OPT_C: | |
0f113f3e | 125 | C = 1; |
7e1b7485 RS |
126 | break; |
127 | case OPT_CHECK: | |
0f113f3e | 128 | check = 1; |
7e1b7485 RS |
129 | break; |
130 | case OPT_LIST_CURVES: | |
0f113f3e | 131 | list_curves = 1; |
7e1b7485 RS |
132 | break; |
133 | case OPT_NO_SEED: | |
0f113f3e | 134 | no_seed = 1; |
7e1b7485 RS |
135 | break; |
136 | case OPT_NOOUT: | |
0f113f3e | 137 | noout = 1; |
7e1b7485 RS |
138 | break; |
139 | case OPT_NAME: | |
140 | curve_name = opt_arg(); | |
141 | break; | |
142 | case OPT_CONV_FORM: | |
143 | if (!opt_pair(opt_arg(), forms, &new_form)) | |
144 | goto opthelp; | |
145 | form = new_form; | |
146 | new_form = 1; | |
147 | break; | |
148 | case OPT_PARAM_ENC: | |
149 | if (!opt_pair(opt_arg(), encodings, &asn1_flag)) | |
150 | goto opthelp; | |
151 | new_asn1_flag = 1; | |
152 | break; | |
153 | case OPT_GENKEY: | |
3ee1eac2 | 154 | genkey = 1; |
7e1b7485 | 155 | break; |
3ee1eac2 RS |
156 | case OPT_R_CASES: |
157 | if (!opt_rand(o)) | |
158 | goto end; | |
7e1b7485 RS |
159 | break; |
160 | case OPT_ENGINE: | |
dd1abd44 | 161 | e = setup_engine(opt_arg(), 0); |
0f113f3e MC |
162 | break; |
163 | } | |
0f113f3e | 164 | } |
7e1b7485 | 165 | argc = opt_num_rest(); |
03358517 KR |
166 | if (argc != 0) |
167 | goto opthelp; | |
168 | ||
3b061a00 | 169 | private = genkey ? 1 : 0; |
0f113f3e | 170 | |
bdd58d98 | 171 | in = bio_open_default(infile, 'r', informat); |
7e1b7485 | 172 | if (in == NULL) |
0f113f3e | 173 | goto end; |
bdd58d98 | 174 | out = bio_open_owner(outfile, outformat, private); |
7e1b7485 | 175 | if (out == NULL) |
0f113f3e | 176 | goto end; |
0f113f3e | 177 | |
0f113f3e MC |
178 | if (list_curves) { |
179 | EC_builtin_curve *curves = NULL; | |
68dc6824 RS |
180 | size_t crv_len = EC_get_builtin_curves(NULL, 0); |
181 | size_t n; | |
0f113f3e | 182 | |
b4faea50 | 183 | curves = app_malloc((int)sizeof(*curves) * crv_len, "list curves"); |
0f113f3e MC |
184 | if (!EC_get_builtin_curves(curves, crv_len)) { |
185 | OPENSSL_free(curves); | |
186 | goto end; | |
187 | } | |
188 | ||
189 | for (n = 0; n < crv_len; n++) { | |
190 | const char *comment; | |
191 | const char *sname; | |
192 | comment = curves[n].comment; | |
193 | sname = OBJ_nid2sn(curves[n].nid); | |
194 | if (comment == NULL) | |
195 | comment = "CURVE DESCRIPTION NOT AVAILABLE"; | |
196 | if (sname == NULL) | |
197 | sname = ""; | |
198 | ||
199 | BIO_printf(out, " %-10s: ", sname); | |
200 | BIO_printf(out, "%s\n", comment); | |
201 | } | |
202 | ||
203 | OPENSSL_free(curves); | |
204 | ret = 0; | |
205 | goto end; | |
206 | } | |
207 | ||
208 | if (curve_name != NULL) { | |
209 | int nid; | |
210 | ||
211 | /* | |
212 | * workaround for the SECG curve names secp192r1 and secp256r1 (which | |
213 | * are the same as the curves prime192v1 and prime256v1 defined in | |
214 | * X9.62) | |
215 | */ | |
86885c28 | 216 | if (strcmp(curve_name, "secp192r1") == 0) { |
0f113f3e MC |
217 | BIO_printf(bio_err, "using curve name prime192v1 " |
218 | "instead of secp192r1\n"); | |
219 | nid = NID_X9_62_prime192v1; | |
86885c28 | 220 | } else if (strcmp(curve_name, "secp256r1") == 0) { |
0f113f3e MC |
221 | BIO_printf(bio_err, "using curve name prime256v1 " |
222 | "instead of secp256r1\n"); | |
223 | nid = NID_X9_62_prime256v1; | |
2234212c | 224 | } else { |
0f113f3e | 225 | nid = OBJ_sn2nid(curve_name); |
2234212c | 226 | } |
0f113f3e MC |
227 | |
228 | if (nid == 0) | |
229 | nid = EC_curve_nist2nid(curve_name); | |
230 | ||
231 | if (nid == 0) { | |
232 | BIO_printf(bio_err, "unknown curve name (%s)\n", curve_name); | |
233 | goto end; | |
234 | } | |
235 | ||
236 | group = EC_GROUP_new_by_curve_name(nid); | |
237 | if (group == NULL) { | |
238 | BIO_printf(bio_err, "unable to create curve (%s)\n", curve_name); | |
239 | goto end; | |
240 | } | |
241 | EC_GROUP_set_asn1_flag(group, asn1_flag); | |
242 | EC_GROUP_set_point_conversion_form(group, form); | |
2234212c | 243 | } else if (informat == FORMAT_ASN1) { |
0f113f3e | 244 | group = d2i_ECPKParameters_bio(in, NULL); |
2234212c | 245 | } else { |
0f113f3e | 246 | group = PEM_read_bio_ECPKParameters(in, NULL, NULL, NULL); |
2234212c | 247 | } |
0f113f3e MC |
248 | if (group == NULL) { |
249 | BIO_printf(bio_err, "unable to load elliptic curve parameters\n"); | |
250 | ERR_print_errors(bio_err); | |
251 | goto end; | |
252 | } | |
253 | ||
254 | if (new_form) | |
255 | EC_GROUP_set_point_conversion_form(group, form); | |
256 | ||
257 | if (new_asn1_flag) | |
258 | EC_GROUP_set_asn1_flag(group, asn1_flag); | |
259 | ||
260 | if (no_seed) { | |
261 | EC_GROUP_set_seed(group, NULL, 0); | |
262 | } | |
263 | ||
264 | if (text) { | |
265 | if (!ECPKParameters_print(out, group, 0)) | |
266 | goto end; | |
267 | } | |
268 | ||
269 | if (check) { | |
0f113f3e MC |
270 | BIO_printf(bio_err, "checking elliptic curve parameters: "); |
271 | if (!EC_GROUP_check(group, NULL)) { | |
272 | BIO_printf(bio_err, "failed\n"); | |
273 | ERR_print_errors(bio_err); | |
99dcd880 PW |
274 | goto end; |
275 | } | |
276 | BIO_printf(bio_err, "ok\n"); | |
0f113f3e MC |
277 | |
278 | } | |
279 | ||
280 | if (C) { | |
281 | size_t buf_len = 0, tmp_len = 0; | |
282 | const EC_POINT *point; | |
283 | int is_prime, len = 0; | |
284 | const EC_METHOD *meth = EC_GROUP_method_of(group); | |
285 | ||
7e1b7485 RS |
286 | if ((ec_p = BN_new()) == NULL |
287 | || (ec_a = BN_new()) == NULL | |
288 | || (ec_b = BN_new()) == NULL | |
289 | || (ec_gen = BN_new()) == NULL | |
290 | || (ec_order = BN_new()) == NULL | |
291 | || (ec_cofactor = BN_new()) == NULL) { | |
68dc6824 | 292 | perror("Can't allocate BN"); |
0f113f3e MC |
293 | goto end; |
294 | } | |
295 | ||
296 | is_prime = (EC_METHOD_get_field_type(meth) == NID_X9_62_prime_field); | |
7e1b7485 RS |
297 | if (!is_prime) { |
298 | BIO_printf(bio_err, "Can only handle X9.62 prime fields\n"); | |
0f113f3e MC |
299 | goto end; |
300 | } | |
301 | ||
9cc570d4 | 302 | if (!EC_GROUP_get_curve(group, ec_p, ec_a, ec_b, NULL)) |
7e1b7485 RS |
303 | goto end; |
304 | ||
0f113f3e MC |
305 | if ((point = EC_GROUP_get0_generator(group)) == NULL) |
306 | goto end; | |
307 | if (!EC_POINT_point2bn(group, point, | |
308 | EC_GROUP_get_point_conversion_form(group), | |
309 | ec_gen, NULL)) | |
310 | goto end; | |
311 | if (!EC_GROUP_get_order(group, ec_order, NULL)) | |
312 | goto end; | |
313 | if (!EC_GROUP_get_cofactor(group, ec_cofactor, NULL)) | |
314 | goto end; | |
315 | ||
316 | if (!ec_p || !ec_a || !ec_b || !ec_gen || !ec_order || !ec_cofactor) | |
317 | goto end; | |
318 | ||
319 | len = BN_num_bits(ec_order); | |
320 | ||
321 | if ((tmp_len = (size_t)BN_num_bytes(ec_p)) > buf_len) | |
322 | buf_len = tmp_len; | |
323 | if ((tmp_len = (size_t)BN_num_bytes(ec_a)) > buf_len) | |
324 | buf_len = tmp_len; | |
325 | if ((tmp_len = (size_t)BN_num_bytes(ec_b)) > buf_len) | |
326 | buf_len = tmp_len; | |
327 | if ((tmp_len = (size_t)BN_num_bytes(ec_gen)) > buf_len) | |
328 | buf_len = tmp_len; | |
329 | if ((tmp_len = (size_t)BN_num_bytes(ec_order)) > buf_len) | |
330 | buf_len = tmp_len; | |
331 | if ((tmp_len = (size_t)BN_num_bytes(ec_cofactor)) > buf_len) | |
332 | buf_len = tmp_len; | |
333 | ||
68dc6824 | 334 | buffer = app_malloc(buf_len, "BN buffer"); |
0f113f3e | 335 | |
7e1b7485 RS |
336 | BIO_printf(out, "EC_GROUP *get_ec_group_%d(void)\n{\n", len); |
337 | print_bignum_var(out, ec_p, "ec_p", len, buffer); | |
338 | print_bignum_var(out, ec_a, "ec_a", len, buffer); | |
339 | print_bignum_var(out, ec_b, "ec_b", len, buffer); | |
340 | print_bignum_var(out, ec_gen, "ec_gen", len, buffer); | |
341 | print_bignum_var(out, ec_order, "ec_order", len, buffer); | |
342 | print_bignum_var(out, ec_cofactor, "ec_cofactor", len, buffer); | |
343 | BIO_printf(out, " int ok = 0;\n" | |
344 | " EC_GROUP *group = NULL;\n" | |
345 | " EC_POINT *point = NULL;\n" | |
346 | " BIGNUM *tmp_1 = NULL;\n" | |
347 | " BIGNUM *tmp_2 = NULL;\n" | |
348 | " BIGNUM *tmp_3 = NULL;\n" | |
349 | "\n"); | |
350 | ||
cbe29648 | 351 | BIO_printf(out, " if ((tmp_1 = BN_bin2bn(ec_p_%d, sizeof(ec_p_%d), NULL)) == NULL)\n" |
7e1b7485 | 352 | " goto err;\n", len, len); |
cbe29648 | 353 | BIO_printf(out, " if ((tmp_2 = BN_bin2bn(ec_a_%d, sizeof(ec_a_%d), NULL)) == NULL)\n" |
7e1b7485 | 354 | " goto err;\n", len, len); |
cbe29648 | 355 | BIO_printf(out, " if ((tmp_3 = BN_bin2bn(ec_b_%d, sizeof(ec_b_%d), NULL)) == NULL)\n" |
7e1b7485 RS |
356 | " goto err;\n", len, len); |
357 | BIO_printf(out, " if ((group = EC_GROUP_new_curve_GFp(tmp_1, tmp_2, tmp_3, NULL)) == NULL)\n" | |
358 | " goto err;\n" | |
359 | "\n"); | |
360 | BIO_printf(out, " /* build generator */\n"); | |
cbe29648 | 361 | BIO_printf(out, " if ((tmp_1 = BN_bin2bn(ec_gen_%d, sizeof(ec_gen_%d), tmp_1)) == NULL)\n" |
7e1b7485 RS |
362 | " goto err;\n", len, len); |
363 | BIO_printf(out, " point = EC_POINT_bn2point(group, tmp_1, NULL, NULL);\n"); | |
364 | BIO_printf(out, " if (point == NULL)\n" | |
365 | " goto err;\n"); | |
cbe29648 | 366 | BIO_printf(out, " if ((tmp_2 = BN_bin2bn(ec_order_%d, sizeof(ec_order_%d), tmp_2)) == NULL)\n" |
7e1b7485 | 367 | " goto err;\n", len, len); |
cbe29648 | 368 | BIO_printf(out, " if ((tmp_3 = BN_bin2bn(ec_cofactor_%d, sizeof(ec_cofactor_%d), tmp_3)) == NULL)\n" |
7e1b7485 RS |
369 | " goto err;\n", len, len); |
370 | BIO_printf(out, " if (!EC_GROUP_set_generator(group, point, tmp_2, tmp_3))\n" | |
371 | " goto err;\n" | |
372 | "ok = 1;" | |
373 | "\n"); | |
374 | BIO_printf(out, "err:\n" | |
375 | " BN_free(tmp_1);\n" | |
376 | " BN_free(tmp_2);\n" | |
377 | " BN_free(tmp_3);\n" | |
378 | " EC_POINT_free(point);\n" | |
379 | " if (!ok) {\n" | |
380 | " EC_GROUP_free(group);\n" | |
381 | " return NULL;\n" | |
382 | " }\n" | |
383 | " return (group);\n" | |
384 | "}\n"); | |
0f113f3e MC |
385 | } |
386 | ||
4bdc25b0 BE |
387 | if (outformat == FORMAT_ASN1 && genkey) |
388 | noout = 1; | |
389 | ||
0f113f3e MC |
390 | if (!noout) { |
391 | if (outformat == FORMAT_ASN1) | |
392 | i = i2d_ECPKParameters_bio(out, group); | |
7e1b7485 | 393 | else |
0f113f3e | 394 | i = PEM_write_bio_ECPKParameters(out, group); |
0f113f3e MC |
395 | if (!i) { |
396 | BIO_printf(bio_err, "unable to write elliptic " | |
397 | "curve parameters\n"); | |
398 | ERR_print_errors(bio_err); | |
399 | goto end; | |
400 | } | |
401 | } | |
402 | ||
0f113f3e MC |
403 | if (genkey) { |
404 | EC_KEY *eckey = EC_KEY_new(); | |
405 | ||
406 | if (eckey == NULL) | |
407 | goto end; | |
408 | ||
f6de4eb7 DSH |
409 | if (EC_KEY_set_group(eckey, group) == 0) { |
410 | BIO_printf(bio_err, "unable to set group when generating key\n"); | |
411 | EC_KEY_free(eckey); | |
412 | ERR_print_errors(bio_err); | |
0f113f3e | 413 | goto end; |
f6de4eb7 | 414 | } |
0f113f3e | 415 | |
4bdc25b0 BE |
416 | if (new_form) |
417 | EC_KEY_set_conv_form(eckey, form); | |
418 | ||
0f113f3e | 419 | if (!EC_KEY_generate_key(eckey)) { |
f6de4eb7 | 420 | BIO_printf(bio_err, "unable to generate key\n"); |
0f113f3e | 421 | EC_KEY_free(eckey); |
f6de4eb7 | 422 | ERR_print_errors(bio_err); |
0f113f3e MC |
423 | goto end; |
424 | } | |
3b061a00 | 425 | assert(private); |
0f113f3e MC |
426 | if (outformat == FORMAT_ASN1) |
427 | i = i2d_ECPrivateKey_bio(out, eckey); | |
7e1b7485 | 428 | else |
0f113f3e MC |
429 | i = PEM_write_bio_ECPrivateKey(out, eckey, NULL, |
430 | NULL, 0, NULL, NULL); | |
0f113f3e MC |
431 | EC_KEY_free(eckey); |
432 | } | |
433 | ||
0f113f3e MC |
434 | ret = 0; |
435 | end: | |
23a1d5e9 RS |
436 | BN_free(ec_p); |
437 | BN_free(ec_a); | |
438 | BN_free(ec_b); | |
439 | BN_free(ec_gen); | |
440 | BN_free(ec_order); | |
441 | BN_free(ec_cofactor); | |
b548a1f1 | 442 | OPENSSL_free(buffer); |
dd1abd44 RL |
443 | EC_GROUP_free(group); |
444 | release_engine(e); | |
ca3a82c3 RS |
445 | BIO_free(in); |
446 | BIO_free_all(out); | |
26a7d938 | 447 | return ret; |
5dbd3efc BM |
448 | } |
449 | ||
5dbd3efc | 450 | #endif |