1 /*
2 * Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10 #include <stdio.h>
11 #include <stdlib.h>
12 #include <time.h>
13 #include <string.h>
14 #include <ctype.h>
15 #include "apps.h"
16 #include "progs.h"
17 #include <openssl/core_names.h>
18 #include <openssl/bio.h>
19 #include <openssl/evp.h>
20 #include <openssl/conf.h>
21 #include <openssl/err.h>
22 #include <openssl/asn1.h>
23 #include <openssl/x509.h>
24 #include <openssl/x509v3.h>
25 #include <openssl/objects.h>
26 #include <openssl/pem.h>
27 #include <openssl/bn.h>
28 #include <openssl/lhash.h>
29 #include <openssl/rsa.h>
30 #ifndef OPENSSL_NO_DSA
31 # include <openssl/dsa.h>
32 #endif
33
34 #define BITS "default_bits"
35 #define KEYFILE "default_keyfile"
36 #define PROMPT "prompt"
37 #define DISTINGUISHED_NAME "distinguished_name"
38 #define ATTRIBUTES "attributes"
39 #define V3_EXTENSIONS "x509_extensions"
40 #define REQ_EXTENSIONS "req_extensions"
41 #define STRING_MASK "string_mask"
42 #define UTF8_IN "utf8"
43
44 #define DEFAULT_KEY_LENGTH 2048
45 #define MIN_KEY_LENGTH 512
46 #define DEFAULT_DAYS 30 /* default cert validity period in days */
47 #define UNSET_DAYS -2 /* -1 may be used for testing expiration checks */
48 #define EXT_COPY_UNSET -1
49
50 static int make_REQ(X509_REQ *req, EVP_PKEY *pkey, X509_NAME *fsubj,
51 int mutlirdn, int attribs, unsigned long chtype);
52 static int prompt_info(X509_REQ *req,
53 STACK_OF(CONF_VALUE) *dn_sk, const char *dn_sect,
54 STACK_OF(CONF_VALUE) *attr_sk, const char *attr_sect,
55 int attribs, unsigned long chtype);
56 static int auto_info(X509_REQ *req, STACK_OF(CONF_VALUE) *sk,
57 STACK_OF(CONF_VALUE) *attr, int attribs,
58 unsigned long chtype);
59 static int add_attribute_object(X509_REQ *req, char *text, const char *def,
60 char *value, int nid, int n_min, int n_max,
61 unsigned long chtype);
62 static int add_DN_object(X509_NAME *n, char *text, const char *def,
63 char *value, int nid, int n_min, int n_max,
64 unsigned long chtype, int mval);
65 static int build_data(char *text, const char *def, char *value,
66 int n_min, int n_max, char *buf, const int buf_size,
67 const char *desc1, const char *desc2);
68 static int req_check_len(int len, int n_min, int n_max);
69 static int check_end(const char *str, const char *end);
70 static int join(char buf[], size_t buf_size, const char *name,
71 const char *tail, const char *desc);
72 static EVP_PKEY_CTX *set_keygen_ctx(const char *gstr,
73 char **pkeytype, long *pkeylen,
74 ENGINE *keygen_engine);
75
76 static const char *section = "req";
77 static CONF *req_conf = NULL;
78 static CONF *addext_conf = NULL;
79 static int batch = 0;
80
81 typedef enum OPTION_choice {
82 OPT_COMMON,
83 OPT_INFORM, OPT_OUTFORM, OPT_ENGINE, OPT_KEYGEN_ENGINE, OPT_KEY,
84 OPT_PUBKEY, OPT_NEW, OPT_CONFIG, OPT_KEYFORM, OPT_IN, OPT_OUT,
85 OPT_KEYOUT, OPT_PASSIN, OPT_PASSOUT, OPT_NEWKEY,
86 OPT_PKEYOPT, OPT_SIGOPT, OPT_VFYOPT, OPT_BATCH, OPT_NEWHDR, OPT_MODULUS,
87 OPT_VERIFY, OPT_NOENC, OPT_NODES, OPT_NOOUT, OPT_VERBOSE, OPT_UTF8,
88 OPT_NAMEOPT, OPT_REQOPT, OPT_SUBJ, OPT_SUBJECT, OPT_TEXT, OPT_X509,
89 OPT_CA, OPT_CAKEY,
90 OPT_MULTIVALUE_RDN, OPT_DAYS, OPT_SET_SERIAL,
91 OPT_COPY_EXTENSIONS, OPT_EXTENSIONS, OPT_REQEXTS, OPT_ADDEXT,
92 OPT_PRECERT, OPT_MD,
93 OPT_SECTION,
94 OPT_R_ENUM, OPT_PROV_ENUM
95 } OPTION_CHOICE;
96
97 const OPTIONS req_options[] = {
98 OPT_SECTION("General"),
99 {"help", OPT_HELP, '-', "Display this summary"},
100 #ifndef OPENSSL_NO_ENGINE
101 {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
102 {"keygen_engine", OPT_KEYGEN_ENGINE, 's',
103 "Specify engine to be used for key generation operations"},
104 #endif
105 {"in", OPT_IN, '<', "X.509 request input file (default stdin)"},
106 {"inform", OPT_INFORM, 'F', "Input format - DER or PEM"},
107 {"verify", OPT_VERIFY, '-', "Verify self-signature on the request"},
108
109 OPT_SECTION("Certificate"),
110 {"new", OPT_NEW, '-', "New request"},
111 {"config", OPT_CONFIG, '<', "Request template file"},
112 {"section", OPT_SECTION, 's', "Config section to use (default \"req\")"},
113 {"utf8", OPT_UTF8, '-', "Input characters are UTF8 (default ASCII)"},
114 {"nameopt", OPT_NAMEOPT, 's', "Certificate subject/issuer name printing options"},
115 {"reqopt", OPT_REQOPT, 's', "Various request text options"},
116 {"text", OPT_TEXT, '-', "Text form of request"},
117 {"x509", OPT_X509, '-',
118 "Output an X.509 certificate structure instead of a cert request"},
119 {"CA", OPT_CA, '<', "Issuer cert to use for signing a cert, implies -x509"},
120 {"CAkey", OPT_CAKEY, 's',
121 "Issuer private key to use with -CA; default is -CA arg"},
122 {OPT_MORE_STR, 1, 1, "(Required by some CA's)"},
123 {"subj", OPT_SUBJ, 's', "Set or modify subject of request or cert"},
124 {"subject", OPT_SUBJECT, '-',
125 "Print the subject of the output request or cert"},
126 {"multivalue-rdn", OPT_MULTIVALUE_RDN, '-',
127 "Deprecated; multi-valued RDNs support is always on."},
128 {"days", OPT_DAYS, 'p', "Number of days cert is valid for"},
129 {"set_serial", OPT_SET_SERIAL, 's', "Serial number to use"},
130 {"copy_extensions", OPT_COPY_EXTENSIONS, 's',
131 "copy extensions from request when using -x509"},
132 {"extensions", OPT_EXTENSIONS, 's',
133 "Cert or request extension section (override value in config file)"},
134 {"reqexts", OPT_REQEXTS, 's', "An alias for -extensions"},
135 {"addext", OPT_ADDEXT, 's',
136 "Additional cert extension key=value pair (may be given more than once)"},
137 {"precert", OPT_PRECERT, '-', "Add a poison extension to generated cert (implies -new)"},
138
139 OPT_SECTION("Keys and Signing"),
140 {"key", OPT_KEY, 's', "Key for signing, and to include unless -in given"},
141 {"keyform", OPT_KEYFORM, 'f', "Key file format (ENGINE, other values ignored)"},
142 {"pubkey", OPT_PUBKEY, '-', "Output public key"},
143 {"keyout", OPT_KEYOUT, '>', "File to write private key to"},
144 {"passin", OPT_PASSIN, 's', "Private key and certificate password source"},
145 {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"},
146 {"newkey", OPT_NEWKEY, 's',
147 "Generate new key with [<alg>:]<nbits> or <alg>[:<file>] or param:<file>"},
148 {"pkeyopt", OPT_PKEYOPT, 's', "Public key options as opt:value"},
149 {"sigopt", OPT_SIGOPT, 's', "Signature parameter in n:v form"},
150 {"vfyopt", OPT_VFYOPT, 's', "Verification parameter in n:v form"},
151 {"", OPT_MD, '-', "Any supported digest"},
152
153 OPT_SECTION("Output"),
154 {"out", OPT_OUT, '>', "Output file"},
155 {"outform", OPT_OUTFORM, 'F', "Output format - DER or PEM"},
156 {"batch", OPT_BATCH, '-',
157 "Do not ask anything during request generation"},
158 {"verbose", OPT_VERBOSE, '-', "Verbose output"},
159 {"noenc", OPT_NOENC, '-', "Don't encrypt private keys"},
160 {"nodes", OPT_NODES, '-', "Don't encrypt private keys; deprecated"},
161 {"noout", OPT_NOOUT, '-', "Do not output REQ"},
162 {"newhdr", OPT_NEWHDR, '-', "Output \"NEW\" in the header lines"},
163 {"modulus", OPT_MODULUS, '-', "RSA modulus"},
164
165 OPT_R_OPTIONS,
166 OPT_PROV_OPTIONS,
167 {NULL}
168 };
169
170 /*
171 * An LHASH of strings, where each string is an extension name.
172 */
ext_name_hash(const OPENSSL_STRING * a)173 static unsigned long ext_name_hash(const OPENSSL_STRING *a)
174 {
175 return OPENSSL_LH_strhash((const char *)a);
176 }
177
ext_name_cmp(const OPENSSL_STRING * a,const OPENSSL_STRING * b)178 static int ext_name_cmp(const OPENSSL_STRING *a, const OPENSSL_STRING *b)
179 {
180 return strcmp((const char *)a, (const char *)b);
181 }
182
exts_cleanup(OPENSSL_STRING * x)183 static void exts_cleanup(OPENSSL_STRING *x)
184 {
185 OPENSSL_free((char *)x);
186 }
187
188 /*
189 * Is the |kv| key already duplicated? This is remarkably tricky to get right.
190 * Return 0 if unique, -1 on runtime error; 1 if found or a syntax error.
191 */
duplicated(LHASH_OF (OPENSSL_STRING)* addexts,char * kv)192 static int duplicated(LHASH_OF(OPENSSL_STRING) *addexts, char *kv)
193 {
194 char *p;
195 size_t off;
196
197 /* Check syntax. */
198 /* Skip leading whitespace, make a copy. */
199 while (*kv && isspace(*kv))
200 if (*++kv == '\0')
201 return 1;
202 if ((p = strchr(kv, '=')) == NULL)
203 return 1;
204 off = p - kv;
205 if ((kv = OPENSSL_strdup(kv)) == NULL)
206 return -1;
207
208 /* Skip trailing space before the equal sign. */
209 for (p = kv + off; p > kv; --p)
210 if (!isspace(p[-1]))
211 break;
212 if (p == kv) {
213 OPENSSL_free(kv);
214 return 1;
215 }
216 *p = '\0';
217
218 /* Finally have a clean "key"; see if it's there [by attempt to add it]. */
219 p = (char *)lh_OPENSSL_STRING_insert(addexts, (OPENSSL_STRING *)kv);
220 if (p != NULL) {
221 OPENSSL_free(p);
222 return 1;
223 } else if (lh_OPENSSL_STRING_error(addexts)) {
224 OPENSSL_free(kv);
225 return -1;
226 }
227
228 return 0;
229 }
230
req_main(int argc,char ** argv)231 int req_main(int argc, char **argv)
232 {
233 ASN1_INTEGER *serial = NULL;
234 BIO *out = NULL;
235 ENGINE *e = NULL, *gen_eng = NULL;
236 EVP_PKEY *pkey = NULL, *CAkey = NULL;
237 EVP_PKEY_CTX *genctx = NULL;
238 STACK_OF(OPENSSL_STRING) *pkeyopts = NULL, *sigopts = NULL, *vfyopts = NULL;
239 LHASH_OF(OPENSSL_STRING) *addexts = NULL;
240 X509 *new_x509 = NULL, *CAcert = NULL;
241 X509_REQ *req = NULL;
242 EVP_CIPHER *cipher = NULL;
243 int ext_copy = EXT_COPY_UNSET;
244 BIO *addext_bio = NULL;
245 char *extsect = NULL;
246 const char *infile = NULL, *CAfile = NULL, *CAkeyfile = NULL;
247 char *outfile = NULL, *keyfile = NULL, *digest = NULL;
248 char *keyalgstr = NULL, *p, *prog, *passargin = NULL, *passargout = NULL;
249 char *passin = NULL, *passout = NULL;
250 char *nofree_passin = NULL, *nofree_passout = NULL;
251 char *subj = NULL;
252 X509_NAME *fsubj = NULL;
253 char *template = default_config_file, *keyout = NULL;
254 const char *keyalg = NULL;
255 OPTION_CHOICE o;
256 int days = UNSET_DAYS;
257 int ret = 1, gen_x509 = 0, i = 0, newreq = 0, verbose = 0;
258 int informat = FORMAT_UNDEF, outformat = FORMAT_PEM, keyform = FORMAT_UNDEF;
259 int modulus = 0, multirdn = 1, verify = 0, noout = 0, text = 0;
260 int noenc = 0, newhdr = 0, subject = 0, pubkey = 0, precert = 0;
261 long newkey_len = -1;
262 unsigned long chtype = MBSTRING_ASC, reqflag = 0;
263
264 #ifndef OPENSSL_NO_DES
265 cipher = (EVP_CIPHER *)EVP_des_ede3_cbc();
266 #endif
267
268 opt_set_unknown_name("digest");
269 prog = opt_init(argc, argv, req_options);
270 while ((o = opt_next()) != OPT_EOF) {
271 switch (o) {
272 case OPT_EOF:
273 case OPT_ERR:
274 opthelp:
275 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
276 goto end;
277 case OPT_HELP:
278 opt_help(req_options);
279 ret = 0;
280 goto end;
281 case OPT_INFORM:
282 if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
283 goto opthelp;
284 break;
285 case OPT_OUTFORM:
286 if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
287 goto opthelp;
288 break;
289 case OPT_ENGINE:
290 e = setup_engine(opt_arg(), 0);
291 break;
292 case OPT_KEYGEN_ENGINE:
293 #ifndef OPENSSL_NO_ENGINE
294 gen_eng = setup_engine(opt_arg(), 0);
295 if (gen_eng == NULL) {
296 BIO_printf(bio_err, "Can't find keygen engine %s\n", *argv);
297 goto opthelp;
298 }
299 #endif
300 break;
301 case OPT_KEY:
302 keyfile = opt_arg();
303 break;
304 case OPT_PUBKEY:
305 pubkey = 1;
306 break;
307 case OPT_NEW:
308 newreq = 1;
309 break;
310 case OPT_CONFIG:
311 template = opt_arg();
312 break;
313 case OPT_SECTION:
314 section = opt_arg();
315 break;
316 case OPT_KEYFORM:
317 if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyform))
318 goto opthelp;
319 break;
320 case OPT_IN:
321 infile = opt_arg();
322 break;
323 case OPT_OUT:
324 outfile = opt_arg();
325 break;
326 case OPT_KEYOUT:
327 keyout = opt_arg();
328 break;
329 case OPT_PASSIN:
330 passargin = opt_arg();
331 break;
332 case OPT_PASSOUT:
333 passargout = opt_arg();
334 break;
335 case OPT_R_CASES:
336 if (!opt_rand(o))
337 goto end;
338 break;
339 case OPT_PROV_CASES:
340 if (!opt_provider(o))
341 goto end;
342 break;
343 case OPT_NEWKEY:
344 keyalg = opt_arg();
345 newreq = 1;
346 break;
347 case OPT_PKEYOPT:
348 if (pkeyopts == NULL)
349 pkeyopts = sk_OPENSSL_STRING_new_null();
350 if (pkeyopts == NULL
351 || !sk_OPENSSL_STRING_push(pkeyopts, opt_arg()))
352 goto opthelp;
353 break;
354 case OPT_SIGOPT:
355 if (!sigopts)
356 sigopts = sk_OPENSSL_STRING_new_null();
357 if (!sigopts || !sk_OPENSSL_STRING_push(sigopts, opt_arg()))
358 goto opthelp;
359 break;
360 case OPT_VFYOPT:
361 if (!vfyopts)
362 vfyopts = sk_OPENSSL_STRING_new_null();
363 if (!vfyopts || !sk_OPENSSL_STRING_push(vfyopts, opt_arg()))
364 goto opthelp;
365 break;
366 case OPT_BATCH:
367 batch = 1;
368 break;
369 case OPT_NEWHDR:
370 newhdr = 1;
371 break;
372 case OPT_MODULUS:
373 modulus = 1;
374 break;
375 case OPT_VERIFY:
376 verify = 1;
377 break;
378 case OPT_NODES:
379 case OPT_NOENC:
380 noenc = 1;
381 break;
382 case OPT_NOOUT:
383 noout = 1;
384 break;
385 case OPT_VERBOSE:
386 verbose = 1;
387 break;
388 case OPT_UTF8:
389 chtype = MBSTRING_UTF8;
390 break;
391 case OPT_NAMEOPT:
392 if (!set_nameopt(opt_arg()))
393 goto opthelp;
394 break;
395 case OPT_REQOPT:
396 if (!set_cert_ex(&reqflag, opt_arg()))
397 goto opthelp;
398 break;
399 case OPT_TEXT:
400 text = 1;
401 break;
402 case OPT_X509:
403 gen_x509 = 1;
404 break;
405 case OPT_CA:
406 CAfile = opt_arg();
407 gen_x509 = 1;
408 break;
409 case OPT_CAKEY:
410 CAkeyfile = opt_arg();
411 break;
412 case OPT_DAYS:
413 days = atoi(opt_arg());
414 if (days < -1) {
415 BIO_printf(bio_err, "%s: -days parameter arg must be >= -1\n",
416 prog);
417 goto end;
418 }
419 break;
420 case OPT_SET_SERIAL:
421 if (serial != NULL) {
422 BIO_printf(bio_err, "Serial number supplied twice\n");
423 goto opthelp;
424 }
425 serial = s2i_ASN1_INTEGER(NULL, opt_arg());
426 if (serial == NULL)
427 goto opthelp;
428 break;
429 case OPT_SUBJECT:
430 subject = 1;
431 break;
432 case OPT_SUBJ:
433 subj = opt_arg();
434 break;
435 case OPT_MULTIVALUE_RDN:
436 /* obsolete */
437 break;
438 case OPT_COPY_EXTENSIONS:
439 if (!set_ext_copy(&ext_copy, opt_arg())) {
440 BIO_printf(bio_err, "Invalid extension copy option: \"%s\"\n",
441 opt_arg());
442 goto end;
443 }
444 break;
445 case OPT_EXTENSIONS:
446 case OPT_REQEXTS:
447 extsect = opt_arg();
448 break;
449 case OPT_ADDEXT:
450 p = opt_arg();
451 if (addexts == NULL) {
452 addexts = lh_OPENSSL_STRING_new(ext_name_hash, ext_name_cmp);
453 addext_bio = BIO_new(BIO_s_mem());
454 if (addexts == NULL || addext_bio == NULL)
455 goto end;
456 }
457 i = duplicated(addexts, p);
458 if (i == 1) {
459 BIO_printf(bio_err, "Duplicate extension name: %s\n", p);
460 goto opthelp;
461 }
462 if (i < 0 || BIO_printf(addext_bio, "%s\n", p) < 0)
463 goto end;
464 break;
465 case OPT_PRECERT:
466 newreq = precert = 1;
467 break;
468 case OPT_MD:
469 digest = opt_unknown();
470 break;
471 }
472 }
473
474 /* No extra arguments. */
475 if (!opt_check_rest_arg(NULL))
476 goto opthelp;
477
478 if (!app_RAND_load())
479 goto end;
480
481 if (!gen_x509) {
482 if (days != UNSET_DAYS)
483 BIO_printf(bio_err, "Ignoring -days without -x509; not generating a certificate\n");
484 if (ext_copy == EXT_COPY_NONE)
485 BIO_printf(bio_err, "Ignoring -copy_extensions 'none' when -x509 is not given\n");
486 }
487 if (infile == NULL) {
488 if (gen_x509)
489 newreq = 1;
490 else if (!newreq)
491 BIO_printf(bio_err,
492 "Warning: Will read cert request from stdin since no -in option is given\n");
493 }
494
495 if (!app_passwd(passargin, passargout, &passin, &passout)) {
496 BIO_printf(bio_err, "Error getting passwords\n");
497 goto end;
498 }
499
500 if ((req_conf = app_load_config_verbose(template, verbose)) == NULL)
501 goto end;
502 if (addext_bio != NULL) {
503 if (verbose)
504 BIO_printf(bio_err,
505 "Using additional configuration from -addext options\n");
506 if ((addext_conf = app_load_config_bio(addext_bio, NULL)) == NULL)
507 goto end;
508 }
509 if (template != default_config_file && !app_load_modules(req_conf))
510 goto end;
511
512 if (req_conf != NULL) {
513 p = NCONF_get_string(req_conf, NULL, "oid_file");
514 if (p == NULL)
515 ERR_clear_error();
516 if (p != NULL) {
517 BIO *oid_bio = BIO_new_file(p, "r");
518
519 if (oid_bio == NULL) {
520 if (verbose)
521 BIO_printf(bio_err,
522 "Problems opening '%s' for extra OIDs\n", p);
523 } else {
524 OBJ_create_objects(oid_bio);
525 BIO_free(oid_bio);
526 }
527 }
528 }
529 if (!add_oid_section(req_conf))
530 goto end;
531
532 /* Check that any specified digest is fetchable */
533 if (digest != NULL) {
534 if (!opt_check_md(digest))
535 goto opthelp;
536 } else {
537 /* No digest specified, default to configuration */
538 p = NCONF_get_string(req_conf, section, "default_md");
539 if (p == NULL)
540 ERR_clear_error();
541 else
542 digest = p;
543 }
544
545 if (extsect == NULL) {
546 extsect = NCONF_get_string(req_conf, section,
547 gen_x509 ? V3_EXTENSIONS : REQ_EXTENSIONS);
548 if (extsect == NULL)
549 ERR_clear_error();
550 }
551 if (extsect != NULL) {
552 /* Check syntax of extension section in config file */
553 X509V3_CTX ctx;
554
555 X509V3_set_ctx_test(&ctx);
556 X509V3_set_nconf(&ctx, req_conf);
557 if (!X509V3_EXT_add_nconf(req_conf, &ctx, extsect, NULL)) {
558 BIO_printf(bio_err,
559 "Error checking %s extension section %s\n",
560 gen_x509 ? "x509" : "request", extsect);
561 goto end;
562 }
563 }
564 if (addext_conf != NULL) {
565 /* Check syntax of command line extensions */
566 X509V3_CTX ctx;
567
568 X509V3_set_ctx_test(&ctx);
569 X509V3_set_nconf(&ctx, addext_conf);
570 if (!X509V3_EXT_add_nconf(addext_conf, &ctx, "default", NULL)) {
571 BIO_printf(bio_err, "Error checking extensions defined using -addext\n");
572 goto end;
573 }
574 }
575
576 if (passin == NULL) {
577 passin = nofree_passin =
578 NCONF_get_string(req_conf, section, "input_password");
579 if (passin == NULL)
580 ERR_clear_error();
581 }
582
583 if (passout == NULL) {
584 passout = nofree_passout =
585 NCONF_get_string(req_conf, section, "output_password");
586 if (passout == NULL)
587 ERR_clear_error();
588 }
589
590 p = NCONF_get_string(req_conf, section, STRING_MASK);
591 if (p == NULL)
592 ERR_clear_error();
593
594 if (p != NULL && !ASN1_STRING_set_default_mask_asc(p)) {
595 BIO_printf(bio_err, "Invalid global string mask setting %s\n", p);
596 goto end;
597 }
598
599 if (chtype != MBSTRING_UTF8) {
600 p = NCONF_get_string(req_conf, section, UTF8_IN);
601 if (p == NULL)
602 ERR_clear_error();
603 else if (strcmp(p, "yes") == 0)
604 chtype = MBSTRING_UTF8;
605 }
606
607 if (keyfile != NULL) {
608 pkey = load_key(keyfile, keyform, 0, passin, e, "private key");
609 if (pkey == NULL)
610 goto end;
611 app_RAND_load_conf(req_conf, section);
612 }
613 if (keyalg != NULL && pkey != NULL) {
614 BIO_printf(bio_err,
615 "Warning: Not generating key via given -newkey option since -key is given\n");
616 /* Better throw an error in this case */
617 }
618 if (newreq && pkey == NULL) {
619 app_RAND_load_conf(req_conf, section);
620
621 if (!NCONF_get_number(req_conf, section, BITS, &newkey_len))
622 newkey_len = DEFAULT_KEY_LENGTH;
623
624 genctx = set_keygen_ctx(keyalg, &keyalgstr, &newkey_len, gen_eng);
625 if (genctx == NULL)
626 goto end;
627
628 if (newkey_len < MIN_KEY_LENGTH
629 && (EVP_PKEY_CTX_is_a(genctx, "RSA")
630 || EVP_PKEY_CTX_is_a(genctx, "RSA-PSS")
631 || EVP_PKEY_CTX_is_a(genctx, "DSA"))) {
632 BIO_printf(bio_err, "Private key length too short, needs to be at least %d bits, not %ld.\n",
633 MIN_KEY_LENGTH, newkey_len);
634 goto end;
635 }
636
637 if (newkey_len > OPENSSL_RSA_MAX_MODULUS_BITS
638 && (EVP_PKEY_CTX_is_a(genctx, "RSA")
639 || EVP_PKEY_CTX_is_a(genctx, "RSA-PSS")))
640 BIO_printf(bio_err,
641 "Warning: It is not recommended to use more than %d bit for RSA keys.\n"
642 " Your key size is %ld! Larger key size may behave not as expected.\n",
643 OPENSSL_RSA_MAX_MODULUS_BITS, newkey_len);
644
645 #ifndef OPENSSL_NO_DSA
646 if (EVP_PKEY_CTX_is_a(genctx, "DSA")
647 && newkey_len > OPENSSL_DSA_MAX_MODULUS_BITS)
648 BIO_printf(bio_err,
649 "Warning: It is not recommended to use more than %d bit for DSA keys.\n"
650 " Your key size is %ld! Larger key size may behave not as expected.\n",
651 OPENSSL_DSA_MAX_MODULUS_BITS, newkey_len);
652 #endif
653
654 if (pkeyopts != NULL) {
655 char *genopt;
656 for (i = 0; i < sk_OPENSSL_STRING_num(pkeyopts); i++) {
657 genopt = sk_OPENSSL_STRING_value(pkeyopts, i);
658 if (pkey_ctrl_string(genctx, genopt) <= 0) {
659 BIO_printf(bio_err, "Key parameter error \"%s\"\n", genopt);
660 goto end;
661 }
662 }
663 }
664
665 EVP_PKEY_CTX_set_cb(genctx, progress_cb);
666 EVP_PKEY_CTX_set_app_data(genctx, bio_err);
667
668 pkey = app_keygen(genctx, keyalgstr, newkey_len, verbose);
669
670 EVP_PKEY_CTX_free(genctx);
671 genctx = NULL;
672 }
673 if (keyout == NULL && keyfile == NULL) {
674 keyout = NCONF_get_string(req_conf, section, KEYFILE);
675 if (keyout == NULL)
676 ERR_clear_error();
677 }
678
679 if (pkey != NULL && (keyfile == NULL || keyout != NULL)) {
680 if (verbose) {
681 BIO_printf(bio_err, "Writing private key to ");
682 if (keyout == NULL)
683 BIO_printf(bio_err, "stdout\n");
684 else
685 BIO_printf(bio_err, "'%s'\n", keyout);
686 }
687 out = bio_open_owner(keyout, outformat, newreq);
688 if (out == NULL)
689 goto end;
690
691 p = NCONF_get_string(req_conf, section, "encrypt_rsa_key");
692 if (p == NULL) {
693 ERR_clear_error();
694 p = NCONF_get_string(req_conf, section, "encrypt_key");
695 if (p == NULL)
696 ERR_clear_error();
697 }
698 if ((p != NULL) && (strcmp(p, "no") == 0))
699 cipher = NULL;
700 if (noenc)
701 cipher = NULL;
702
703 i = 0;
704 loop:
705 if (!PEM_write_bio_PrivateKey(out, pkey, cipher,
706 NULL, 0, NULL, passout)) {
707 if ((ERR_GET_REASON(ERR_peek_error()) ==
708 PEM_R_PROBLEMS_GETTING_PASSWORD) && (i < 3)) {
709 ERR_clear_error();
710 i++;
711 goto loop;
712 }
713 goto end;
714 }
715 BIO_free(out);
716 out = NULL;
717 BIO_printf(bio_err, "-----\n");
718 }
719
720 /*
721 * subj is expected to be in the format /type0=value0/type1=value1/type2=...
722 * where characters may be escaped by \
723 */
724 if (subj != NULL
725 && (fsubj = parse_name(subj, chtype, multirdn, "subject")) == NULL)
726 goto end;
727
728 if (!newreq) {
729 if (keyfile != NULL)
730 BIO_printf(bio_err,
731 "Warning: Not placing -key in cert or request since request is used\n");
732 req = load_csr(infile /* if NULL, reads from stdin */,
733 informat, "X509 request");
734 if (req == NULL)
735 goto end;
736 } else if (infile != NULL) {
737 BIO_printf(bio_err,
738 "Warning: Ignoring -in option since -new or -newkey or -precert is given\n");
739 /* Better throw an error in this case, as done in the x509 app */
740 }
741
742 if (CAkeyfile == NULL)
743 CAkeyfile = CAfile;
744 if (CAkeyfile != NULL) {
745 if (CAfile == NULL) {
746 BIO_printf(bio_err,
747 "Warning: Ignoring -CAkey option since no -CA option is given\n");
748 } else {
749 if ((CAkey = load_key(CAkeyfile, FORMAT_UNDEF,
750 0, passin, e,
751 CAkeyfile != CAfile
752 ? "issuer private key from -CAkey arg"
753 : "issuer private key from -CA arg")) == NULL)
754 goto end;
755 }
756 }
757 if (CAfile != NULL) {
758 if ((CAcert = load_cert_pass(CAfile, FORMAT_UNDEF, 1, passin,
759 "issuer cert from -CA arg")) == NULL)
760 goto end;
761 if (!X509_check_private_key(CAcert, CAkey)) {
762 BIO_printf(bio_err,
763 "Issuer CA certificate and key do not match\n");
764 goto end;
765 }
766 }
767 if (newreq || gen_x509) {
768 if (CAcert == NULL && pkey == NULL) {
769 BIO_printf(bio_err, "Must provide a signature key using -key or"
770 " provide -CA / -CAkey\n");
771 goto end;
772 }
773
774 if (req == NULL) {
775 req = X509_REQ_new_ex(app_get0_libctx(), app_get0_propq());
776 if (req == NULL) {
777 goto end;
778 }
779
780 if (!make_REQ(req, pkey, fsubj, multirdn, !gen_x509, chtype)) {
781 BIO_printf(bio_err, "Error making certificate request\n");
782 goto end;
783 }
784 /* Note that -x509 can take over -key and -subj option values. */
785 }
786 if (gen_x509) {
787 EVP_PKEY *pub_key = X509_REQ_get0_pubkey(req);
788 EVP_PKEY *issuer_key = CAcert != NULL ? CAkey : pkey;
789 X509V3_CTX ext_ctx;
790 X509_NAME *issuer = CAcert != NULL ? X509_get_subject_name(CAcert) :
791 X509_REQ_get_subject_name(req);
792 X509_NAME *n_subj = fsubj != NULL ? fsubj :
793 X509_REQ_get_subject_name(req);
794
795 if (CAcert != NULL && keyfile != NULL)
796 BIO_printf(bio_err,
797 "Warning: Not using -key or -newkey for signing since -CA option is given\n");
798
799 if ((new_x509 = X509_new_ex(app_get0_libctx(),
800 app_get0_propq())) == NULL)
801 goto end;
802
803 if (serial != NULL) {
804 if (!X509_set_serialNumber(new_x509, serial))
805 goto end;
806 } else {
807 if (!rand_serial(NULL, X509_get_serialNumber(new_x509)))
808 goto end;
809 }
810
811 if (!X509_set_issuer_name(new_x509, issuer))
812 goto end;
813 if (days == UNSET_DAYS) {
814 days = DEFAULT_DAYS;
815 }
816 if (!set_cert_times(new_x509, NULL, NULL, days))
817 goto end;
818 if (!X509_set_subject_name(new_x509, n_subj))
819 goto end;
820 if (!pub_key || !X509_set_pubkey(new_x509, pub_key))
821 goto end;
822 if (ext_copy == EXT_COPY_UNSET) {
823 if (infile != NULL)
824 BIO_printf(bio_err, "Warning: No -copy_extensions given; ignoring any extensions in the request\n");
825 } else if (!copy_extensions(new_x509, req, ext_copy)) {
826 BIO_printf(bio_err, "Error copying extensions from request\n");
827 goto end;
828 }
829
830 /* Set up V3 context struct */
831 X509V3_set_ctx(&ext_ctx, CAcert != NULL ? CAcert : new_x509,
832 new_x509, NULL, NULL, X509V3_CTX_REPLACE);
833 /* prepare fallback for AKID, but only if issuer cert == new_x509 */
834 if (CAcert == NULL) {
835 if (!X509V3_set_issuer_pkey(&ext_ctx, issuer_key))
836 goto end;
837 if (!cert_matches_key(new_x509, issuer_key))
838 BIO_printf(bio_err,
839 "Warning: Signature key and public key of cert do not match\n");
840 }
841 X509V3_set_nconf(&ext_ctx, req_conf);
842
843 /* Add extensions */
844 if (extsect != NULL
845 && !X509V3_EXT_add_nconf(req_conf, &ext_ctx, extsect, new_x509)) {
846 BIO_printf(bio_err, "Error adding x509 extensions from section %s\n",
847 extsect);
848 goto end;
849 }
850 if (addext_conf != NULL
851 && !X509V3_EXT_add_nconf(addext_conf, &ext_ctx, "default",
852 new_x509)) {
853 BIO_printf(bio_err, "Error adding x509 extensions defined via -addext\n");
854 goto end;
855 }
856
857 /* If a pre-cert was requested, we need to add a poison extension */
858 if (precert) {
859 if (X509_add1_ext_i2d(new_x509, NID_ct_precert_poison,
860 NULL, 1, 0) != 1) {
861 BIO_printf(bio_err, "Error adding poison extension\n");
862 goto end;
863 }
864 }
865
866 i = do_X509_sign(new_x509, issuer_key, digest, sigopts, &ext_ctx);
867 if (!i)
868 goto end;
869 } else {
870 X509V3_CTX ext_ctx;
871
872 if (precert) {
873 BIO_printf(bio_err,
874 "Warning: Ignoring -precert flag since no cert is produced\n");
875 }
876 /* Set up V3 context struct */
877 X509V3_set_ctx(&ext_ctx, NULL, NULL, req, NULL, X509V3_CTX_REPLACE);
878 X509V3_set_nconf(&ext_ctx, req_conf);
879
880 /* Add extensions */
881 if (extsect != NULL
882 && !X509V3_EXT_REQ_add_nconf(req_conf, &ext_ctx, extsect, req)) {
883 BIO_printf(bio_err, "Error adding request extensions from section %s\n",
884 extsect);
885 goto end;
886 }
887 if (addext_conf != NULL
888 && !X509V3_EXT_REQ_add_nconf(addext_conf, &ext_ctx, "default",
889 req)) {
890 BIO_printf(bio_err, "Error adding request extensions defined via -addext\n");
891 goto end;
892 }
893 i = do_X509_REQ_sign(req, pkey, digest, sigopts);
894 if (!i)
895 goto end;
896 }
897 }
898
899 if (subj != NULL && !newreq && !gen_x509) {
900 if (verbose) {
901 BIO_printf(out, "Modifying subject of certificate request\n");
902 print_name(out, "Old subject=", X509_REQ_get_subject_name(req));
903 }
904
905 if (!X509_REQ_set_subject_name(req, fsubj)) {
906 BIO_printf(bio_err, "Error modifying subject of certificate request\n");
907 goto end;
908 }
909
910 if (verbose) {
911 print_name(out, "New subject=", X509_REQ_get_subject_name(req));
912 }
913 }
914
915 if (verify) {
916 EVP_PKEY *tpubkey = pkey;
917
918 if (tpubkey == NULL) {
919 tpubkey = X509_REQ_get0_pubkey(req);
920 if (tpubkey == NULL)
921 goto end;
922 }
923
924 i = do_X509_REQ_verify(req, tpubkey, vfyopts);
925
926 if (i < 0)
927 goto end;
928 if (i == 0)
929 BIO_printf(bio_err, "Certificate request self-signature verify failure\n");
930 else /* i > 0 */
931 BIO_printf(bio_err, "Certificate request self-signature verify OK\n");
932 }
933
934 if (noout && !text && !modulus && !subject && !pubkey) {
935 ret = 0;
936 goto end;
937 }
938
939 out = bio_open_default(outfile,
940 keyout != NULL && outfile != NULL &&
941 strcmp(keyout, outfile) == 0 ? 'a' : 'w',
942 outformat);
943 if (out == NULL)
944 goto end;
945
946 if (pubkey) {
947 EVP_PKEY *tpubkey = X509_REQ_get0_pubkey(req);
948
949 if (tpubkey == NULL) {
950 BIO_printf(bio_err, "Error getting public key\n");
951 goto end;
952 }
953 PEM_write_bio_PUBKEY(out, tpubkey);
954 }
955
956 if (text) {
957 if (gen_x509)
958 ret = X509_print_ex(out, new_x509, get_nameopt(), reqflag);
959 else
960 ret = X509_REQ_print_ex(out, req, get_nameopt(), reqflag);
961
962 if (ret == 0) {
963 if (gen_x509)
964 BIO_printf(bio_err, "Error printing certificate\n");
965 else
966 BIO_printf(bio_err, "Error printing certificate request\n");
967 goto end;
968 }
969 }
970
971 if (subject) {
972 print_name(out, "subject=", gen_x509
973 ? X509_get_subject_name(new_x509)
974 : X509_REQ_get_subject_name(req));
975 }
976
977 if (modulus) {
978 EVP_PKEY *tpubkey;
979
980 if (gen_x509)
981 tpubkey = X509_get0_pubkey(new_x509);
982 else
983 tpubkey = X509_REQ_get0_pubkey(req);
984 if (tpubkey == NULL) {
985 fprintf(stdout, "Modulus is unavailable\n");
986 goto end;
987 }
988 fprintf(stdout, "Modulus=");
989 if (EVP_PKEY_is_a(tpubkey, "RSA") || EVP_PKEY_is_a(tpubkey, "RSA-PSS")) {
990 BIGNUM *n = NULL;
991
992 if (!EVP_PKEY_get_bn_param(tpubkey, "n", &n))
993 goto end;
994 BN_print(out, n);
995 BN_free(n);
996 } else {
997 fprintf(stdout, "Wrong Algorithm type");
998 }
999 fprintf(stdout, "\n");
1000 }
1001
1002 if (!noout && !gen_x509) {
1003 if (outformat == FORMAT_ASN1)
1004 i = i2d_X509_REQ_bio(out, req);
1005 else if (newhdr)
1006 i = PEM_write_bio_X509_REQ_NEW(out, req);
1007 else
1008 i = PEM_write_bio_X509_REQ(out, req);
1009 if (!i) {
1010 BIO_printf(bio_err, "Unable to write certificate request\n");
1011 goto end;
1012 }
1013 }
1014 if (!noout && gen_x509 && new_x509 != NULL) {
1015 if (outformat == FORMAT_ASN1)
1016 i = i2d_X509_bio(out, new_x509);
1017 else
1018 i = PEM_write_bio_X509(out, new_x509);
1019 if (!i) {
1020 BIO_printf(bio_err, "Unable to write X509 certificate\n");
1021 goto end;
1022 }
1023 }
1024 ret = 0;
1025 end:
1026 if (ret) {
1027 ERR_print_errors(bio_err);
1028 }
1029 NCONF_free(req_conf);
1030 NCONF_free(addext_conf);
1031 BIO_free(addext_bio);
1032 BIO_free_all(out);
1033 EVP_PKEY_free(pkey);
1034 EVP_PKEY_CTX_free(genctx);
1035 sk_OPENSSL_STRING_free(pkeyopts);
1036 sk_OPENSSL_STRING_free(sigopts);
1037 sk_OPENSSL_STRING_free(vfyopts);
1038 lh_OPENSSL_STRING_doall(addexts, exts_cleanup);
1039 lh_OPENSSL_STRING_free(addexts);
1040 #ifndef OPENSSL_NO_ENGINE
1041 release_engine(gen_eng);
1042 #endif
1043 OPENSSL_free(keyalgstr);
1044 X509_REQ_free(req);
1045 X509_NAME_free(fsubj);
1046 X509_free(new_x509);
1047 X509_free(CAcert);
1048 EVP_PKEY_free(CAkey);
1049 ASN1_INTEGER_free(serial);
1050 release_engine(e);
1051 if (passin != nofree_passin)
1052 OPENSSL_free(passin);
1053 if (passout != nofree_passout)
1054 OPENSSL_free(passout);
1055 return ret;
1056 }
1057
make_REQ(X509_REQ * req,EVP_PKEY * pkey,X509_NAME * fsubj,int multirdn,int attribs,unsigned long chtype)1058 static int make_REQ(X509_REQ *req, EVP_PKEY *pkey, X509_NAME *fsubj,
1059 int multirdn, int attribs, unsigned long chtype)
1060 {
1061 int ret = 0, i;
1062 char no_prompt = 0;
1063 STACK_OF(CONF_VALUE) *dn_sk = NULL, *attr_sk = NULL;
1064 char *tmp, *dn_sect, *attr_sect;
1065
1066 tmp = NCONF_get_string(req_conf, section, PROMPT);
1067 if (tmp == NULL)
1068 ERR_clear_error();
1069 if ((tmp != NULL) && strcmp(tmp, "no") == 0)
1070 no_prompt = 1;
1071
1072 dn_sect = NCONF_get_string(req_conf, section, DISTINGUISHED_NAME);
1073 if (dn_sect == NULL) {
1074 ERR_clear_error();
1075 } else {
1076 dn_sk = NCONF_get_section(req_conf, dn_sect);
1077 if (dn_sk == NULL) {
1078 BIO_printf(bio_err, "Unable to get '%s' section\n", dn_sect);
1079 goto err;
1080 }
1081 }
1082
1083 attr_sect = NCONF_get_string(req_conf, section, ATTRIBUTES);
1084 if (attr_sect == NULL) {
1085 ERR_clear_error();
1086 } else {
1087 attr_sk = NCONF_get_section(req_conf, attr_sect);
1088 if (attr_sk == NULL) {
1089 BIO_printf(bio_err, "Unable to get '%s' section\n", attr_sect);
1090 goto err;
1091 }
1092 }
1093
1094 /* so far there is only version 1 */
1095 if (!X509_REQ_set_version(req, X509_REQ_VERSION_1))
1096 goto err;
1097
1098 if (fsubj != NULL)
1099 i = X509_REQ_set_subject_name(req, fsubj);
1100 else if (no_prompt)
1101 i = auto_info(req, dn_sk, attr_sk, attribs, chtype);
1102 else
1103 i = prompt_info(req, dn_sk, dn_sect, attr_sk, attr_sect, attribs,
1104 chtype);
1105 if (!i)
1106 goto err;
1107
1108 if (!X509_REQ_set_pubkey(req, pkey))
1109 goto err;
1110
1111 ret = 1;
1112 err:
1113 return ret;
1114 }
1115
prompt_info(X509_REQ * req,STACK_OF (CONF_VALUE)* dn_sk,const char * dn_sect,STACK_OF (CONF_VALUE)* attr_sk,const char * attr_sect,int attribs,unsigned long chtype)1116 static int prompt_info(X509_REQ *req,
1117 STACK_OF(CONF_VALUE) *dn_sk, const char *dn_sect,
1118 STACK_OF(CONF_VALUE) *attr_sk, const char *attr_sect,
1119 int attribs, unsigned long chtype)
1120 {
1121 int i;
1122 char *p, *q;
1123 char buf[100];
1124 int nid, mval;
1125 long n_min, n_max;
1126 char *type, *value;
1127 const char *def;
1128 CONF_VALUE *v;
1129 X509_NAME *subj = X509_REQ_get_subject_name(req);
1130
1131 if (!batch) {
1132 BIO_printf(bio_err,
1133 "You are about to be asked to enter information that will be incorporated\n");
1134 BIO_printf(bio_err, "into your certificate request.\n");
1135 BIO_printf(bio_err,
1136 "What you are about to enter is what is called a Distinguished Name or a DN.\n");
1137 BIO_printf(bio_err,
1138 "There are quite a few fields but you can leave some blank\n");
1139 BIO_printf(bio_err,
1140 "For some fields there will be a default value,\n");
1141 BIO_printf(bio_err,
1142 "If you enter '.', the field will be left blank.\n");
1143 BIO_printf(bio_err, "-----\n");
1144 }
1145
1146 if (sk_CONF_VALUE_num(dn_sk)) {
1147 i = -1;
1148 start:
1149 for (;;) {
1150 i++;
1151 if (sk_CONF_VALUE_num(dn_sk) <= i)
1152 break;
1153
1154 v = sk_CONF_VALUE_value(dn_sk, i);
1155 p = q = NULL;
1156 type = v->name;
1157 if (!check_end(type, "_min") || !check_end(type, "_max") ||
1158 !check_end(type, "_default") || !check_end(type, "_value"))
1159 continue;
1160 /*
1161 * Skip past any leading X. X: X, etc to allow for multiple
1162 * instances
1163 */
1164 for (p = v->name; *p; p++)
1165 if ((*p == ':') || (*p == ',') || (*p == '.')) {
1166 p++;
1167 if (*p)
1168 type = p;
1169 break;
1170 }
1171 if (*type == '+') {
1172 mval = -1;
1173 type++;
1174 } else {
1175 mval = 0;
1176 }
1177 /* If OBJ not recognised ignore it */
1178 if ((nid = OBJ_txt2nid(type)) == NID_undef)
1179 goto start;
1180 if (!join(buf, sizeof(buf), v->name, "_default", "Name"))
1181 return 0;
1182 if ((def = NCONF_get_string(req_conf, dn_sect, buf)) == NULL) {
1183 ERR_clear_error();
1184 def = "";
1185 }
1186
1187 if (!join(buf, sizeof(buf), v->name, "_value", "Name"))
1188 return 0;
1189 if ((value = NCONF_get_string(req_conf, dn_sect, buf)) == NULL) {
1190 ERR_clear_error();
1191 value = NULL;
1192 }
1193
1194 if (!join(buf, sizeof(buf), v->name, "_min", "Name"))
1195 return 0;
1196 if (!NCONF_get_number(req_conf, dn_sect, buf, &n_min)) {
1197 ERR_clear_error();
1198 n_min = -1;
1199 }
1200
1201 if (!join(buf, sizeof(buf), v->name, "_max", "Name"))
1202 return 0;
1203 if (!NCONF_get_number(req_conf, dn_sect, buf, &n_max)) {
1204 ERR_clear_error();
1205 n_max = -1;
1206 }
1207
1208 if (!add_DN_object(subj, v->value, def, value, nid,
1209 n_min, n_max, chtype, mval))
1210 return 0;
1211 }
1212 if (X509_NAME_entry_count(subj) == 0) {
1213 BIO_printf(bio_err, "Error: No objects specified in config file\n");
1214 return 0;
1215 }
1216
1217 if (attribs) {
1218 if ((attr_sk != NULL) && (sk_CONF_VALUE_num(attr_sk) > 0)
1219 && (!batch)) {
1220 BIO_printf(bio_err,
1221 "\nPlease enter the following 'extra' attributes\n");
1222 BIO_printf(bio_err,
1223 "to be sent with your certificate request\n");
1224 }
1225
1226 i = -1;
1227 start2:
1228 for (;;) {
1229 i++;
1230 if ((attr_sk == NULL) || (sk_CONF_VALUE_num(attr_sk) <= i))
1231 break;
1232
1233 v = sk_CONF_VALUE_value(attr_sk, i);
1234 type = v->name;
1235 if ((nid = OBJ_txt2nid(type)) == NID_undef)
1236 goto start2;
1237
1238 if (!join(buf, sizeof(buf), type, "_default", "Name"))
1239 return 0;
1240 if ((def = NCONF_get_string(req_conf, attr_sect, buf))
1241 == NULL) {
1242 ERR_clear_error();
1243 def = "";
1244 }
1245
1246 if (!join(buf, sizeof(buf), type, "_value", "Name"))
1247 return 0;
1248 if ((value = NCONF_get_string(req_conf, attr_sect, buf))
1249 == NULL) {
1250 ERR_clear_error();
1251 value = NULL;
1252 }
1253
1254 if (!join(buf, sizeof(buf), type, "_min", "Name"))
1255 return 0;
1256 if (!NCONF_get_number(req_conf, attr_sect, buf, &n_min)) {
1257 ERR_clear_error();
1258 n_min = -1;
1259 }
1260
1261 if (!join(buf, sizeof(buf), type, "_max", "Name"))
1262 return 0;
1263 if (!NCONF_get_number(req_conf, attr_sect, buf, &n_max)) {
1264 ERR_clear_error();
1265 n_max = -1;
1266 }
1267
1268 if (!add_attribute_object(req,
1269 v->value, def, value, nid, n_min,
1270 n_max, chtype))
1271 return 0;
1272 }
1273 }
1274 } else {
1275 BIO_printf(bio_err, "No template, please set one up.\n");
1276 return 0;
1277 }
1278
1279 return 1;
1280
1281 }
1282
auto_info(X509_REQ * req,STACK_OF (CONF_VALUE)* dn_sk,STACK_OF (CONF_VALUE)* attr_sk,int attribs,unsigned long chtype)1283 static int auto_info(X509_REQ *req, STACK_OF(CONF_VALUE) *dn_sk,
1284 STACK_OF(CONF_VALUE) *attr_sk, int attribs,
1285 unsigned long chtype)
1286 {
1287 int i, spec_char, plus_char;
1288 char *p, *q;
1289 char *type;
1290 CONF_VALUE *v;
1291 X509_NAME *subj;
1292
1293 subj = X509_REQ_get_subject_name(req);
1294
1295 for (i = 0; i < sk_CONF_VALUE_num(dn_sk); i++) {
1296 int mval;
1297 v = sk_CONF_VALUE_value(dn_sk, i);
1298 p = q = NULL;
1299 type = v->name;
1300 /*
1301 * Skip past any leading X. X: X, etc to allow for multiple instances
1302 */
1303 for (p = v->name; *p; p++) {
1304 #ifndef CHARSET_EBCDIC
1305 spec_char = (*p == ':' || *p == ',' || *p == '.');
1306 #else
1307 spec_char = (*p == os_toascii[':'] || *p == os_toascii[',']
1308 || *p == os_toascii['.']);
1309 #endif
1310 if (spec_char) {
1311 p++;
1312 if (*p)
1313 type = p;
1314 break;
1315 }
1316 }
1317 #ifndef CHARSET_EBCDIC
1318 plus_char = (*type == '+');
1319 #else
1320 plus_char = (*type == os_toascii['+']);
1321 #endif
1322 if (plus_char) {
1323 type++;
1324 mval = -1;
1325 } else {
1326 mval = 0;
1327 }
1328 if (!X509_NAME_add_entry_by_txt(subj, type, chtype,
1329 (unsigned char *)v->value, -1, -1,
1330 mval))
1331 return 0;
1332
1333 }
1334
1335 if (!X509_NAME_entry_count(subj)) {
1336 BIO_printf(bio_err, "Error: No objects specified in config file\n");
1337 return 0;
1338 }
1339 if (attribs) {
1340 for (i = 0; i < sk_CONF_VALUE_num(attr_sk); i++) {
1341 v = sk_CONF_VALUE_value(attr_sk, i);
1342 if (!X509_REQ_add1_attr_by_txt(req, v->name, chtype,
1343 (unsigned char *)v->value, -1))
1344 return 0;
1345 }
1346 }
1347 return 1;
1348 }
1349
add_DN_object(X509_NAME * n,char * text,const char * def,char * value,int nid,int n_min,int n_max,unsigned long chtype,int mval)1350 static int add_DN_object(X509_NAME *n, char *text, const char *def,
1351 char *value, int nid, int n_min, int n_max,
1352 unsigned long chtype, int mval)
1353 {
1354 int ret = 0;
1355 char buf[1024];
1356
1357 ret = build_data(text, def, value, n_min, n_max, buf, sizeof(buf),
1358 "DN value", "DN default");
1359 if ((ret == 0) || (ret == 1))
1360 return ret;
1361 ret = 1;
1362
1363 if (!X509_NAME_add_entry_by_NID(n, nid, chtype,
1364 (unsigned char *)buf, -1, -1, mval))
1365 ret = 0;
1366
1367 return ret;
1368 }
1369
add_attribute_object(X509_REQ * req,char * text,const char * def,char * value,int nid,int n_min,int n_max,unsigned long chtype)1370 static int add_attribute_object(X509_REQ *req, char *text, const char *def,
1371 char *value, int nid, int n_min,
1372 int n_max, unsigned long chtype)
1373 {
1374 int ret = 0;
1375 char buf[1024];
1376
1377 ret = build_data(text, def, value, n_min, n_max, buf, sizeof(buf),
1378 "Attribute value", "Attribute default");
1379 if ((ret == 0) || (ret == 1))
1380 return ret;
1381 ret = 1;
1382
1383 if (!X509_REQ_add1_attr_by_NID(req, nid, chtype,
1384 (unsigned char *)buf, -1)) {
1385 BIO_printf(bio_err, "Error adding attribute\n");
1386 ret = 0;
1387 }
1388
1389 return ret;
1390 }
1391
build_data(char * text,const char * def,char * value,int n_min,int n_max,char * buf,const int buf_size,const char * desc1,const char * desc2)1392 static int build_data(char *text, const char *def, char *value,
1393 int n_min, int n_max, char *buf, const int buf_size,
1394 const char *desc1, const char *desc2)
1395 {
1396 int i;
1397 start:
1398 if (!batch)
1399 BIO_printf(bio_err, "%s [%s]:", text, def);
1400 (void)BIO_flush(bio_err);
1401 if (value != NULL) {
1402 if (!join(buf, buf_size, value, "\n", desc1))
1403 return 0;
1404 BIO_printf(bio_err, "%s\n", value);
1405 } else {
1406 buf[0] = '\0';
1407 if (!batch) {
1408 if (!fgets(buf, buf_size, stdin))
1409 return 0;
1410 } else {
1411 buf[0] = '\n';
1412 buf[1] = '\0';
1413 }
1414 }
1415
1416 if (buf[0] == '\0')
1417 return 0;
1418 if (buf[0] == '\n') {
1419 if ((def == NULL) || (def[0] == '\0'))
1420 return 1;
1421 if (!join(buf, buf_size, def, "\n", desc2))
1422 return 0;
1423 } else if ((buf[0] == '.') && (buf[1] == '\n')) {
1424 return 1;
1425 }
1426
1427 i = strlen(buf);
1428 if (buf[i - 1] != '\n') {
1429 BIO_printf(bio_err, "Missing newline at end of input\n");
1430 return 0;
1431 }
1432 buf[--i] = '\0';
1433 #ifdef CHARSET_EBCDIC
1434 ebcdic2ascii(buf, buf, i);
1435 #endif
1436 if (!req_check_len(i, n_min, n_max)) {
1437 if (batch || value)
1438 return 0;
1439 goto start;
1440 }
1441 return 2;
1442 }
1443
req_check_len(int len,int n_min,int n_max)1444 static int req_check_len(int len, int n_min, int n_max)
1445 {
1446 if (n_min > 0 && len < n_min) {
1447 BIO_printf(bio_err,
1448 "String too short, must be at least %d bytes long\n", n_min);
1449 return 0;
1450 }
1451 if (n_max >= 0 && len > n_max) {
1452 BIO_printf(bio_err,
1453 "String too long, must be at most %d bytes long\n", n_max);
1454 return 0;
1455 }
1456 return 1;
1457 }
1458
1459 /* Check if the end of a string matches 'end' */
check_end(const char * str,const char * end)1460 static int check_end(const char *str, const char *end)
1461 {
1462 size_t elen, slen;
1463 const char *tmp;
1464
1465 elen = strlen(end);
1466 slen = strlen(str);
1467 if (elen > slen)
1468 return 1;
1469 tmp = str + slen - elen;
1470 return strcmp(tmp, end);
1471 }
1472
1473 /*
1474 * Merge the two strings together into the result buffer checking for
1475 * overflow and producing an error message if there is.
1476 */
join(char buf[],size_t buf_size,const char * name,const char * tail,const char * desc)1477 static int join(char buf[], size_t buf_size, const char *name,
1478 const char *tail, const char *desc)
1479 {
1480 const size_t name_len = strlen(name), tail_len = strlen(tail);
1481
1482 if (name_len + tail_len + 1 > buf_size) {
1483 BIO_printf(bio_err, "%s '%s' too long\n", desc, name);
1484 return 0;
1485 }
1486 memcpy(buf, name, name_len);
1487 memcpy(buf + name_len, tail, tail_len + 1);
1488 return 1;
1489 }
1490
set_keygen_ctx(const char * gstr,char ** pkeytype,long * pkeylen,ENGINE * keygen_engine)1491 static EVP_PKEY_CTX *set_keygen_ctx(const char *gstr,
1492 char **pkeytype, long *pkeylen,
1493 ENGINE *keygen_engine)
1494 {
1495 EVP_PKEY_CTX *gctx = NULL;
1496 EVP_PKEY *param = NULL;
1497 long keylen = -1;
1498 BIO *pbio = NULL;
1499 const char *keytype = NULL;
1500 size_t keytypelen = 0;
1501 int expect_paramfile = 0;
1502 const char *paramfile = NULL;
1503
1504 /* Treat the first part of gstr, and only that */
1505 if (gstr == NULL) {
1506 /*
1507 * Special case: when no string given, default to RSA and the
1508 * key length given by |*pkeylen|.
1509 */
1510 keytype = "RSA";
1511 keylen = *pkeylen;
1512 } else if (gstr[0] >= '0' && gstr[0] <= '9') {
1513 /* Special case: only keylength given from string, so default to RSA */
1514 keytype = "RSA";
1515 /* The second part treatment will do the rest */
1516 } else {
1517 const char *p = strchr(gstr, ':');
1518 int len;
1519
1520 if (p != NULL)
1521 len = p - gstr;
1522 else
1523 len = strlen(gstr);
1524
1525 if (strncmp(gstr, "param", len) == 0) {
1526 expect_paramfile = 1;
1527 if (p == NULL) {
1528 BIO_printf(bio_err,
1529 "Parameter file requested but no path given: %s\n",
1530 gstr);
1531 return NULL;
1532 }
1533 } else {
1534 keytype = gstr;
1535 keytypelen = len;
1536 }
1537
1538 if (p != NULL)
1539 gstr = gstr + len + 1;
1540 else
1541 gstr = NULL;
1542 }
1543
1544 /* Treat the second part of gstr, if there is one */
1545 if (gstr != NULL) {
1546 /* If the second part starts with a digit, we assume it's a size */
1547 if (!expect_paramfile && gstr[0] >= '0' && gstr[0] <= '9')
1548 keylen = atol(gstr);
1549 else
1550 paramfile = gstr;
1551 }
1552
1553 if (paramfile != NULL) {
1554 pbio = BIO_new_file(paramfile, "r");
1555 if (pbio == NULL) {
1556 BIO_printf(bio_err, "Cannot open parameter file %s\n", paramfile);
1557 return NULL;
1558 }
1559 param = PEM_read_bio_Parameters(pbio, NULL);
1560
1561 if (param == NULL) {
1562 X509 *x;
1563
1564 (void)BIO_reset(pbio);
1565 x = PEM_read_bio_X509(pbio, NULL, NULL, NULL);
1566 if (x != NULL) {
1567 param = X509_get_pubkey(x);
1568 X509_free(x);
1569 }
1570 }
1571
1572 BIO_free(pbio);
1573
1574 if (param == NULL) {
1575 BIO_printf(bio_err, "Error reading parameter file %s\n", paramfile);
1576 return NULL;
1577 }
1578 if (keytype == NULL) {
1579 keytype = EVP_PKEY_get0_type_name(param);
1580 if (keytype == NULL) {
1581 EVP_PKEY_free(param);
1582 BIO_puts(bio_err, "Unable to determine key type\n");
1583 return NULL;
1584 }
1585 }
1586 }
1587
1588 if (keytypelen > 0)
1589 *pkeytype = OPENSSL_strndup(keytype, keytypelen);
1590 else
1591 *pkeytype = OPENSSL_strdup(keytype);
1592
1593 if (*pkeytype == NULL) {
1594 BIO_printf(bio_err, "Out of memory\n");
1595 EVP_PKEY_free(param);
1596 return NULL;
1597 }
1598
1599 if (keylen >= 0)
1600 *pkeylen = keylen;
1601
1602 if (param != NULL) {
1603 if (!EVP_PKEY_is_a(param, *pkeytype)) {
1604 BIO_printf(bio_err, "Key type does not match parameters\n");
1605 EVP_PKEY_free(param);
1606 return NULL;
1607 }
1608
1609 if (keygen_engine != NULL)
1610 gctx = EVP_PKEY_CTX_new(param, keygen_engine);
1611 else
1612 gctx = EVP_PKEY_CTX_new_from_pkey(app_get0_libctx(),
1613 param, app_get0_propq());
1614 *pkeylen = EVP_PKEY_get_bits(param);
1615 EVP_PKEY_free(param);
1616 } else {
1617 if (keygen_engine != NULL) {
1618 int pkey_id = get_legacy_pkey_id(app_get0_libctx(), *pkeytype,
1619 keygen_engine);
1620
1621 if (pkey_id != NID_undef)
1622 gctx = EVP_PKEY_CTX_new_id(pkey_id, keygen_engine);
1623 } else {
1624 gctx = EVP_PKEY_CTX_new_from_name(app_get0_libctx(),
1625 *pkeytype, app_get0_propq());
1626 }
1627 }
1628
1629 if (gctx == NULL) {
1630 BIO_puts(bio_err, "Error allocating keygen context\n");
1631 return NULL;
1632 }
1633
1634 if (EVP_PKEY_keygen_init(gctx) <= 0) {
1635 BIO_puts(bio_err, "Error initializing keygen context\n");
1636 EVP_PKEY_CTX_free(gctx);
1637 return NULL;
1638 }
1639 if (keylen == -1 && (EVP_PKEY_CTX_is_a(gctx, "RSA")
1640 || EVP_PKEY_CTX_is_a(gctx, "RSA-PSS")))
1641 keylen = *pkeylen;
1642
1643 if (keylen != -1) {
1644 OSSL_PARAM params[] = { OSSL_PARAM_END, OSSL_PARAM_END };
1645 size_t bits = keylen;
1646
1647 params[0] =
1648 OSSL_PARAM_construct_size_t(OSSL_PKEY_PARAM_BITS, &bits);
1649 if (EVP_PKEY_CTX_set_params(gctx, params) <= 0) {
1650 BIO_puts(bio_err, "Error setting keysize\n");
1651 EVP_PKEY_CTX_free(gctx);
1652 return NULL;
1653 }
1654 }
1655
1656 return gctx;
1657 }
1658
1659
