Annotation of src/usr.bin/openssl/gendsa.c, Revision 1.12
1.12 ! guenther 1: /* $OpenBSD: gendsa.c,v 1.11 2019/06/07 02:32:22 inoguchi 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 int set_enc(int argc, char **argv, int *argsused);
78: static const EVP_CIPHER *get_cipher_by_name(char *name);
79:
80: static struct {
81: const EVP_CIPHER *enc;
82: char *outfile;
83: char *passargout;
84: } gendsa_config;
85:
1.12 ! guenther 86: static const struct option gendsa_options[] = {
1.11 inoguchi 87: #ifndef OPENSSL_NO_AES
88: {
89: .name = "aes128",
90: .desc = "Encrypt PEM output with cbc aes",
91: .type = OPTION_ARGV_FUNC,
92: .opt.argvfunc = set_enc,
93: },
94: {
95: .name = "aes192",
96: .desc = "Encrypt PEM output with cbc aes",
97: .type = OPTION_ARGV_FUNC,
98: .opt.argvfunc = set_enc,
99: },
100: {
101: .name = "aes256",
102: .desc = "Encrypt PEM output with cbc aes",
103: .type = OPTION_ARGV_FUNC,
104: .opt.argvfunc = set_enc,
105: },
106: #endif
107: #ifndef OPENSSL_NO_CAMELLIA
108: {
109: .name = "camellia128",
110: .desc = "Encrypt PEM output with cbc camellia",
111: .type = OPTION_ARGV_FUNC,
112: .opt.argvfunc = set_enc,
113: },
114: {
115: .name = "camellia192",
116: .desc = "Encrypt PEM output with cbc camellia",
117: .type = OPTION_ARGV_FUNC,
118: .opt.argvfunc = set_enc,
119: },
120: {
121: .name = "camellia256",
122: .desc = "Encrypt PEM output with cbc camellia",
123: .type = OPTION_ARGV_FUNC,
124: .opt.argvfunc = set_enc,
125: },
126: #endif
127: #ifndef OPENSSL_NO_DES
128: {
129: .name = "des",
130: .desc = "Encrypt the generated key with DES in cbc mode",
131: .type = OPTION_ARGV_FUNC,
132: .opt.argvfunc = set_enc,
133: },
134: {
135: .name = "des3",
136: .desc = "Encrypt the generated key with DES in ede cbc mode (168 bit key)",
137: .type = OPTION_ARGV_FUNC,
138: .opt.argvfunc = set_enc,
139: },
140: #endif
141: #ifndef OPENSSL_NO_IDEA
142: {
143: .name = "idea",
144: .desc = "Encrypt the generated key with IDEA in cbc mode",
145: .type = OPTION_ARGV_FUNC,
146: .opt.argvfunc = set_enc,
147: },
148: #endif
149: {
150: .name = "out",
151: .argname = "file",
152: .desc = "Output the key to 'file'",
153: .type = OPTION_ARG,
154: .opt.arg = &gendsa_config.outfile,
155: },
156: {
157: .name = "passout",
158: .argname = "src",
159: .desc = "Output file passphrase source",
160: .type = OPTION_ARG,
161: .opt.arg = &gendsa_config.passargout,
162: },
163: { NULL },
164: };
165:
166: static void
167: gendsa_usage(void)
168: {
169: fprintf(stderr, "usage: gendsa [-aes128 | -aes192 | -aes256 |\n");
170: fprintf(stderr, " -camellia128 | -camellia192 | -camellia256 |\n");
171: fprintf(stderr, " -des | -des3 | -idea] [-out file] [-passout src]");
172: fprintf(stderr, " paramfile\n\n");
173: options_usage(gendsa_options);
174: fprintf(stderr, "\n");
175: }
176:
1.1 jsing 177: int
178: gendsa_main(int argc, char **argv)
179: {
180: DSA *dsa = NULL;
181: int ret = 1;
182: char *dsaparams = NULL;
1.11 inoguchi 183: char *passout = NULL;
1.1 jsing 184: BIO *out = NULL, *in = NULL;
1.5 doug 185:
186: if (single_execution) {
1.8 deraadt 187: if (pledge("stdio cpath wpath rpath tty", NULL) == -1) {
1.5 doug 188: perror("pledge");
1.7 doug 189: exit(1);
190: }
1.5 doug 191: }
1.1 jsing 192:
1.11 inoguchi 193: memset(&gendsa_config, 0, sizeof(gendsa_config));
194:
195: if (options_parse(argc, argv, gendsa_options, &dsaparams, NULL) != 0) {
196: gendsa_usage();
197: goto end;
1.1 jsing 198: }
199:
200: if (dsaparams == NULL) {
1.11 inoguchi 201: gendsa_usage();
1.1 jsing 202: goto end;
203: }
1.11 inoguchi 204: if (!app_passwd(bio_err, NULL, gendsa_config.passargout, NULL,
205: &passout)) {
1.1 jsing 206: BIO_printf(bio_err, "Error getting password\n");
207: goto end;
208: }
209: in = BIO_new(BIO_s_file());
210: if (!(BIO_read_filename(in, dsaparams))) {
211: perror(dsaparams);
212: goto end;
213: }
214: if ((dsa = PEM_read_bio_DSAparams(in, NULL, NULL, NULL)) == NULL) {
215: BIO_printf(bio_err, "unable to load DSA parameter file\n");
216: goto end;
217: }
218: BIO_free(in);
219: in = NULL;
220:
221: out = BIO_new(BIO_s_file());
222: if (out == NULL)
223: goto end;
224:
1.11 inoguchi 225: if (gendsa_config.outfile == NULL) {
1.1 jsing 226: BIO_set_fp(out, stdout, BIO_NOCLOSE);
227: } else {
1.11 inoguchi 228: if (BIO_write_filename(out, gendsa_config.outfile) <= 0) {
229: perror(gendsa_config.outfile);
1.1 jsing 230: goto end;
231: }
232: }
233:
234: BIO_printf(bio_err, "Generating DSA key, %d bits\n",
235: BN_num_bits(dsa->p));
236: if (!DSA_generate_key(dsa))
237: goto end;
238:
1.11 inoguchi 239: if (!PEM_write_bio_DSAPrivateKey(out, dsa, gendsa_config.enc, NULL, 0,
240: NULL, passout))
1.1 jsing 241: goto end;
242: ret = 0;
1.10 jsing 243: end:
1.1 jsing 244: if (ret != 0)
245: ERR_print_errors(bio_err);
246: BIO_free(in);
1.9 jsing 247: BIO_free_all(out);
248: DSA_free(dsa);
1.1 jsing 249: free(passout);
250:
251: return (ret);
1.11 inoguchi 252: }
253:
254: static int
255: set_enc(int argc, char **argv, int *argsused)
256: {
257: char *name = argv[0];
258:
259: if (*name++ != '-')
260: return (1);
261:
262: if ((gendsa_config.enc = get_cipher_by_name(name)) == NULL)
263: return (1);
264:
265: *argsused = 1;
266: return (0);
267: }
268:
269: static const EVP_CIPHER *get_cipher_by_name(char *name)
270: {
271: if (name == NULL || strcmp(name, "") == 0)
272: return (NULL);
273: #ifndef OPENSSL_NO_AES
274: else if (strcmp(name, "aes128") == 0)
275: return EVP_aes_128_cbc();
276: else if (strcmp(name, "aes192") == 0)
277: return EVP_aes_192_cbc();
278: else if (strcmp(name, "aes256") == 0)
279: return EVP_aes_256_cbc();
280: #endif
281: #ifndef OPENSSL_NO_CAMELLIA
282: else if (strcmp(name, "camellia128") == 0)
283: return EVP_camellia_128_cbc();
284: else if (strcmp(name, "camellia192") == 0)
285: return EVP_camellia_192_cbc();
286: else if (strcmp(name, "camellia256") == 0)
287: return EVP_camellia_256_cbc();
288: #endif
289: #ifndef OPENSSL_NO_DES
290: else if (strcmp(name, "des") == 0)
291: return EVP_des_cbc();
292: else if (strcmp(name, "des3") == 0)
293: return EVP_des_ede3_cbc();
294: #endif
295: #ifndef OPENSSL_NO_IDEA
296: else if (strcmp(name, "idea") == 0)
297: return EVP_idea_cbc();
298: #endif
299: else
300: return (NULL);
1.1 jsing 301: }
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