Annotation of src/usr.bin/openssl/gendsa.c, Revision 1.16
1.16 ! joshua 1: /* $OpenBSD: gendsa.c,v 1.15 2022/01/14 09:25:00 tb Exp $ */
1.1 jsing 2: /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3: * All rights reserved.
4: *
5: * This package is an SSL implementation written
6: * by Eric Young (eay@cryptsoft.com).
7: * The implementation was written so as to conform with Netscapes SSL.
8: *
9: * This library is free for commercial and non-commercial use as long as
10: * the following conditions are aheared to. The following conditions
11: * apply to all code found in this distribution, be it the RC4, RSA,
12: * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13: * included with this distribution is covered by the same copyright terms
14: * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15: *
16: * Copyright remains Eric Young's, and as such any Copyright notices in
17: * the code are not to be removed.
18: * If this package is used in a product, Eric Young should be given attribution
19: * as the author of the parts of the library used.
20: * This can be in the form of a textual message at program startup or
21: * in documentation (online or textual) provided with the package.
22: *
23: * Redistribution and use in source and binary forms, with or without
24: * modification, are permitted provided that the following conditions
25: * are met:
26: * 1. Redistributions of source code must retain the copyright
27: * notice, this list of conditions and the following disclaimer.
28: * 2. Redistributions in binary form must reproduce the above copyright
29: * notice, this list of conditions and the following disclaimer in the
30: * documentation and/or other materials provided with the distribution.
31: * 3. All advertising materials mentioning features or use of this software
32: * must display the following acknowledgement:
33: * "This product includes cryptographic software written by
34: * Eric Young (eay@cryptsoft.com)"
35: * The word 'cryptographic' can be left out if the rouines from the library
36: * being used are not cryptographic related :-).
37: * 4. If you include any Windows specific code (or a derivative thereof) from
38: * the apps directory (application code) you must include an acknowledgement:
39: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40: *
41: * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51: * SUCH DAMAGE.
52: *
53: * The licence and distribution terms for any publically available version or
54: * derivative of this code cannot be changed. i.e. this code cannot simply be
55: * copied and put under another distribution licence
56: * [including the GNU Public Licence.]
57: */
58:
59: #include <openssl/opensslconf.h> /* for OPENSSL_NO_DSA */
60:
61:
62: #include <sys/types.h>
63: #include <sys/stat.h>
64:
65: #include <stdio.h>
66: #include <string.h>
67:
68: #include "apps.h"
69:
70: #include <openssl/bio.h>
71: #include <openssl/bn.h>
72: #include <openssl/dsa.h>
73: #include <openssl/err.h>
74: #include <openssl/pem.h>
75: #include <openssl/x509.h>
76:
1.11 inoguchi 77: static struct {
78: const EVP_CIPHER *enc;
79: char *outfile;
80: char *passargout;
81: } gendsa_config;
82:
1.13 inoguchi 83: static const EVP_CIPHER *get_cipher_by_name(char *name)
84: {
85: if (name == NULL || strcmp(name, "") == 0)
86: return (NULL);
87: #ifndef OPENSSL_NO_AES
88: else if (strcmp(name, "aes128") == 0)
89: return EVP_aes_128_cbc();
90: else if (strcmp(name, "aes192") == 0)
91: return EVP_aes_192_cbc();
92: else if (strcmp(name, "aes256") == 0)
93: return EVP_aes_256_cbc();
94: #endif
95: #ifndef OPENSSL_NO_CAMELLIA
96: else if (strcmp(name, "camellia128") == 0)
97: return EVP_camellia_128_cbc();
98: else if (strcmp(name, "camellia192") == 0)
99: return EVP_camellia_192_cbc();
100: else if (strcmp(name, "camellia256") == 0)
101: return EVP_camellia_256_cbc();
102: #endif
103: #ifndef OPENSSL_NO_DES
104: else if (strcmp(name, "des") == 0)
105: return EVP_des_cbc();
106: else if (strcmp(name, "des3") == 0)
107: return EVP_des_ede3_cbc();
108: #endif
109: #ifndef OPENSSL_NO_IDEA
110: else if (strcmp(name, "idea") == 0)
111: return EVP_idea_cbc();
112: #endif
113: else
114: return (NULL);
115: }
116:
117: static int
118: set_enc(int argc, char **argv, int *argsused)
119: {
120: char *name = argv[0];
121:
122: if (*name++ != '-')
123: return (1);
124:
125: if ((gendsa_config.enc = get_cipher_by_name(name)) == NULL)
126: return (1);
127:
128: *argsused = 1;
129: return (0);
130: }
131:
1.12 guenther 132: static const struct option gendsa_options[] = {
1.11 inoguchi 133: #ifndef OPENSSL_NO_AES
134: {
135: .name = "aes128",
1.14 inoguchi 136: .desc = "Encrypt PEM output with CBC AES",
1.11 inoguchi 137: .type = OPTION_ARGV_FUNC,
138: .opt.argvfunc = set_enc,
139: },
140: {
141: .name = "aes192",
1.14 inoguchi 142: .desc = "Encrypt PEM output with CBC AES",
1.11 inoguchi 143: .type = OPTION_ARGV_FUNC,
144: .opt.argvfunc = set_enc,
145: },
146: {
147: .name = "aes256",
1.14 inoguchi 148: .desc = "Encrypt PEM output with CBC AES",
1.11 inoguchi 149: .type = OPTION_ARGV_FUNC,
150: .opt.argvfunc = set_enc,
151: },
152: #endif
153: #ifndef OPENSSL_NO_CAMELLIA
154: {
155: .name = "camellia128",
1.14 inoguchi 156: .desc = "Encrypt PEM output with CBC Camellia",
1.11 inoguchi 157: .type = OPTION_ARGV_FUNC,
158: .opt.argvfunc = set_enc,
159: },
160: {
161: .name = "camellia192",
1.14 inoguchi 162: .desc = "Encrypt PEM output with CBC Camellia",
1.11 inoguchi 163: .type = OPTION_ARGV_FUNC,
164: .opt.argvfunc = set_enc,
165: },
166: {
167: .name = "camellia256",
1.14 inoguchi 168: .desc = "Encrypt PEM output with CBC Camellia",
1.11 inoguchi 169: .type = OPTION_ARGV_FUNC,
170: .opt.argvfunc = set_enc,
171: },
172: #endif
173: #ifndef OPENSSL_NO_DES
174: {
175: .name = "des",
1.14 inoguchi 176: .desc = "Encrypt the generated key with DES in CBC mode",
1.11 inoguchi 177: .type = OPTION_ARGV_FUNC,
178: .opt.argvfunc = set_enc,
179: },
180: {
181: .name = "des3",
1.14 inoguchi 182: .desc = "Encrypt the generated key with DES in EDE CBC mode (168 bit key)",
1.11 inoguchi 183: .type = OPTION_ARGV_FUNC,
184: .opt.argvfunc = set_enc,
185: },
186: #endif
187: #ifndef OPENSSL_NO_IDEA
188: {
189: .name = "idea",
1.14 inoguchi 190: .desc = "Encrypt the generated key with IDEA in CBC mode",
1.11 inoguchi 191: .type = OPTION_ARGV_FUNC,
192: .opt.argvfunc = set_enc,
193: },
194: #endif
195: {
196: .name = "out",
197: .argname = "file",
198: .desc = "Output the key to 'file'",
199: .type = OPTION_ARG,
200: .opt.arg = &gendsa_config.outfile,
201: },
202: {
203: .name = "passout",
204: .argname = "src",
205: .desc = "Output file passphrase source",
206: .type = OPTION_ARG,
207: .opt.arg = &gendsa_config.passargout,
208: },
209: { NULL },
210: };
211:
212: static void
213: gendsa_usage(void)
214: {
215: fprintf(stderr, "usage: gendsa [-aes128 | -aes192 | -aes256 |\n");
216: fprintf(stderr, " -camellia128 | -camellia192 | -camellia256 |\n");
217: fprintf(stderr, " -des | -des3 | -idea] [-out file] [-passout src]");
218: fprintf(stderr, " paramfile\n\n");
219: options_usage(gendsa_options);
220: fprintf(stderr, "\n");
221: }
222:
1.1 jsing 223: int
224: gendsa_main(int argc, char **argv)
225: {
226: DSA *dsa = NULL;
227: int ret = 1;
228: char *dsaparams = NULL;
1.11 inoguchi 229: char *passout = NULL;
1.1 jsing 230: BIO *out = NULL, *in = NULL;
1.5 doug 231:
1.16 ! joshua 232: if (pledge("stdio cpath wpath rpath tty", NULL) == -1) {
! 233: perror("pledge");
! 234: exit(1);
1.5 doug 235: }
1.1 jsing 236:
1.11 inoguchi 237: memset(&gendsa_config, 0, sizeof(gendsa_config));
238:
239: if (options_parse(argc, argv, gendsa_options, &dsaparams, NULL) != 0) {
240: gendsa_usage();
241: goto end;
1.1 jsing 242: }
243:
244: if (dsaparams == NULL) {
1.11 inoguchi 245: gendsa_usage();
1.1 jsing 246: goto end;
247: }
1.11 inoguchi 248: if (!app_passwd(bio_err, NULL, gendsa_config.passargout, NULL,
249: &passout)) {
1.1 jsing 250: BIO_printf(bio_err, "Error getting password\n");
251: goto end;
252: }
253: in = BIO_new(BIO_s_file());
254: if (!(BIO_read_filename(in, dsaparams))) {
255: perror(dsaparams);
256: goto end;
257: }
258: if ((dsa = PEM_read_bio_DSAparams(in, NULL, NULL, NULL)) == NULL) {
259: BIO_printf(bio_err, "unable to load DSA parameter file\n");
260: goto end;
261: }
262: BIO_free(in);
263: in = NULL;
264:
265: out = BIO_new(BIO_s_file());
266: if (out == NULL)
267: goto end;
268:
1.11 inoguchi 269: if (gendsa_config.outfile == NULL) {
1.1 jsing 270: BIO_set_fp(out, stdout, BIO_NOCLOSE);
271: } else {
1.11 inoguchi 272: if (BIO_write_filename(out, gendsa_config.outfile) <= 0) {
273: perror(gendsa_config.outfile);
1.1 jsing 274: goto end;
275: }
276: }
277:
278: BIO_printf(bio_err, "Generating DSA key, %d bits\n",
1.15 tb 279: BN_num_bits(DSA_get0_p(dsa)));
1.1 jsing 280: if (!DSA_generate_key(dsa))
281: goto end;
282:
1.11 inoguchi 283: if (!PEM_write_bio_DSAPrivateKey(out, dsa, gendsa_config.enc, NULL, 0,
284: NULL, passout))
1.1 jsing 285: goto end;
286: ret = 0;
1.10 jsing 287: end:
1.1 jsing 288: if (ret != 0)
289: ERR_print_errors(bio_err);
290: BIO_free(in);
1.9 jsing 291: BIO_free_all(out);
292: DSA_free(dsa);
1.1 jsing 293: free(passout);
294:
295: return (ret);
296: }