Annotation of src/usr.bin/openssl/dsa.c, Revision 1.14
1.14 ! inoguchi 1: /* $OpenBSD: dsa.c,v 1.13 2019/02/09 15:49:21 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: #include <stdio.h>
62: #include <stdlib.h>
63: #include <time.h>
64: #include <string.h>
65:
66: #include "apps.h"
67:
68: #include <openssl/bio.h>
69: #include <openssl/bn.h>
70: #include <openssl/dsa.h>
71: #include <openssl/err.h>
72: #include <openssl/evp.h>
73: #include <openssl/pem.h>
74: #include <openssl/x509.h>
75:
1.3 doug 76: static struct {
77: const EVP_CIPHER *enc;
78: char *infile;
79: int informat;
80: int modulus;
81: int noout;
82: char *outfile;
83: int outformat;
84: char *passargin;
85: char *passargout;
86: int pubin;
87: int pubout;
88: int pvk_encr;
89: int text;
90: } dsa_config;
91:
92: static int
93: dsa_opt_enc(int argc, char **argv, int *argsused)
94: {
95: char *name = argv[0];
96:
97: if (*name++ != '-')
98: return (1);
99:
100: if ((dsa_config.enc = EVP_get_cipherbyname(name)) != NULL) {
101: *argsused = 1;
102: return (0);
103: }
104:
105: return (1);
106: }
107:
108: static struct option dsa_options[] = {
109: {
110: .name = "in",
111: .argname = "file",
112: .desc = "Input file (default stdin)",
113: .type = OPTION_ARG,
114: .opt.arg = &dsa_config.infile,
115: },
116: {
117: .name = "inform",
118: .argname = "format",
119: .desc = "Input format (PEM (default) or any other supported"
120: " format)",
121: .type = OPTION_ARG_FORMAT,
122: .opt.value = &dsa_config.informat,
123: },
124: {
1.14 ! inoguchi 125: .name = "modulus",
! 126: .desc = "Print the DSA public value",
! 127: .type = OPTION_FLAG,
! 128: .opt.flag = &dsa_config.modulus,
! 129: },
! 130: {
1.3 doug 131: .name = "noout",
132: .desc = "No output",
133: .type = OPTION_FLAG,
134: .opt.flag = &dsa_config.noout,
135: },
136: {
137: .name = "out",
138: .argname = "file",
139: .desc = "Output file (default stdout)",
140: .type = OPTION_ARG,
141: .opt.arg = &dsa_config.outfile,
142: },
143: {
144: .name = "outform",
145: .argname = "format",
146: .desc = "Output format (DER, MSBLOB, PEM (default) or PVK)",
147: .type = OPTION_ARG_FORMAT,
148: .opt.value = &dsa_config.outformat,
149: },
150: {
151: .name = "passin",
152: .argname = "source",
153: .desc = "Input file passphrase source",
154: .type = OPTION_ARG,
155: .opt.arg = &dsa_config.passargin,
156: },
157: {
158: .name = "passout",
159: .argname = "source",
160: .desc = "Output file passphrase source",
161: .type = OPTION_ARG,
162: .opt.arg = &dsa_config.passargout,
163: },
164: {
165: .name = "pubin",
166: .desc = "Read a public key from the input file instead of"
167: " private key",
168: .type = OPTION_FLAG,
169: .opt.flag = &dsa_config.pubin,
170: },
171: {
172: .name = "pubout",
173: .desc = "Output a public key instead of private key",
174: .type = OPTION_FLAG,
175: .opt.flag = &dsa_config.pubout,
176: },
177: {
178: .name = "pvk-none",
179: .desc = "PVK encryption level",
180: .type = OPTION_VALUE,
181: .value = 0,
182: .opt.value = &dsa_config.pvk_encr,
183: },
184: {
185: .name = "pvk-strong",
186: .desc = "PVK encryption level (default)",
187: .type = OPTION_VALUE,
188: .value = 2,
189: .opt.value = &dsa_config.pvk_encr,
190: },
191: {
192: .name = "pvk-weak",
193: .desc = "PVK encryption level",
194: .type = OPTION_VALUE,
195: .value = 1,
196: .opt.value = &dsa_config.pvk_encr,
197: },
198: {
199: .name = "text",
200: .desc = "Print the key in text form",
201: .type = OPTION_FLAG,
202: .opt.flag = &dsa_config.text,
203: },
204: {
205: .name = NULL,
206: .type = OPTION_ARGV_FUNC,
207: .opt.argvfunc = dsa_opt_enc,
208: },
209: { NULL },
210: };
211:
212: static void
213: dsa_usage(void)
214: {
1.13 inoguchi 215: int n = 0;
216:
1.3 doug 217: fprintf(stderr,
1.14 ! inoguchi 218: "usage: dsa [-in file] [-inform format] [-modulus] [-noout]\n"
1.3 doug 219: " [-out file] [-outform format] [-passin src] [-passout src]\n"
220: " [-pubin] [-pubout] [-pvk-none | -pvk-strong | -pvk-weak]\n"
221: " [-text] [-ciphername]\n\n");
222: options_usage(dsa_options);
223: fprintf(stderr, "\n");
224:
225: fprintf(stderr, "Valid ciphername values:\n\n");
1.13 inoguchi 226: OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH, show_cipher, &n);
1.3 doug 227: fprintf(stderr, "\n");
228: }
1.1 jsing 229:
230: int
231: dsa_main(int argc, char **argv)
232: {
233: int ret = 1;
234: DSA *dsa = NULL;
1.3 doug 235: int i;
1.1 jsing 236: BIO *in = NULL, *out = NULL;
237: char *passin = NULL, *passout = NULL;
1.6 doug 238:
239: if (single_execution) {
1.9 deraadt 240: if (pledge("stdio cpath wpath rpath tty", NULL) == -1) {
1.6 doug 241: perror("pledge");
1.8 doug 242: exit(1);
243: }
1.6 doug 244: }
1.1 jsing 245:
1.3 doug 246: memset(&dsa_config, 0, sizeof(dsa_config));
1.1 jsing 247:
1.3 doug 248: dsa_config.pvk_encr = 2;
249: dsa_config.informat = FORMAT_PEM;
250: dsa_config.outformat = FORMAT_PEM;
1.1 jsing 251:
1.3 doug 252: if (options_parse(argc, argv, dsa_options, NULL, NULL) != 0) {
253: dsa_usage();
1.1 jsing 254: goto end;
255: }
256:
1.3 doug 257: if (!app_passwd(bio_err, dsa_config.passargin, dsa_config.passargout,
258: &passin, &passout)) {
1.1 jsing 259: BIO_printf(bio_err, "Error getting passwords\n");
260: goto end;
261: }
1.3 doug 262:
1.1 jsing 263: in = BIO_new(BIO_s_file());
264: out = BIO_new(BIO_s_file());
1.3 doug 265: if (in == NULL || out == NULL) {
1.1 jsing 266: ERR_print_errors(bio_err);
267: goto end;
268: }
1.3 doug 269: if (dsa_config.infile == NULL)
1.1 jsing 270: BIO_set_fp(in, stdin, BIO_NOCLOSE);
271: else {
1.3 doug 272: if (BIO_read_filename(in, dsa_config.infile) <= 0) {
273: perror(dsa_config.infile);
1.1 jsing 274: goto end;
275: }
276: }
277:
278: BIO_printf(bio_err, "read DSA key\n");
279:
280: {
281: EVP_PKEY *pkey;
282:
1.3 doug 283: if (dsa_config.pubin)
284: pkey = load_pubkey(bio_err, dsa_config.infile,
1.5 bcook 285: dsa_config.informat, 1, passin, "Public Key");
1.1 jsing 286: else
1.3 doug 287: pkey = load_key(bio_err, dsa_config.infile,
1.5 bcook 288: dsa_config.informat, 1, passin, "Private Key");
1.1 jsing 289:
290: if (pkey) {
291: dsa = EVP_PKEY_get1_DSA(pkey);
292: EVP_PKEY_free(pkey);
293: }
294: }
295: if (dsa == NULL) {
296: BIO_printf(bio_err, "unable to load Key\n");
297: ERR_print_errors(bio_err);
298: goto end;
299: }
1.3 doug 300: if (dsa_config.outfile == NULL) {
1.1 jsing 301: BIO_set_fp(out, stdout, BIO_NOCLOSE);
302: } else {
1.3 doug 303: if (BIO_write_filename(out, dsa_config.outfile) <= 0) {
304: perror(dsa_config.outfile);
1.1 jsing 305: goto end;
306: }
307: }
308:
1.3 doug 309: if (dsa_config.text) {
1.1 jsing 310: if (!DSA_print(out, dsa, 0)) {
1.3 doug 311: perror(dsa_config.outfile);
1.1 jsing 312: ERR_print_errors(bio_err);
313: goto end;
314: }
315: }
1.3 doug 316: if (dsa_config.modulus) {
1.1 jsing 317: fprintf(stdout, "Public Key=");
318: BN_print(out, dsa->pub_key);
319: fprintf(stdout, "\n");
320: }
1.3 doug 321: if (dsa_config.noout)
1.1 jsing 322: goto end;
323: BIO_printf(bio_err, "writing DSA key\n");
1.3 doug 324: if (dsa_config.outformat == FORMAT_ASN1) {
325: if (dsa_config.pubin || dsa_config.pubout)
1.1 jsing 326: i = i2d_DSA_PUBKEY_bio(out, dsa);
327: else
328: i = i2d_DSAPrivateKey_bio(out, dsa);
1.3 doug 329: } else if (dsa_config.outformat == FORMAT_PEM) {
330: if (dsa_config.pubin || dsa_config.pubout)
1.1 jsing 331: i = PEM_write_bio_DSA_PUBKEY(out, dsa);
332: else
1.3 doug 333: i = PEM_write_bio_DSAPrivateKey(out, dsa, dsa_config.enc,
1.1 jsing 334: NULL, 0, NULL, passout);
335: #if !defined(OPENSSL_NO_RSA) && !defined(OPENSSL_NO_RC4)
1.3 doug 336: } else if (dsa_config.outformat == FORMAT_MSBLOB ||
337: dsa_config.outformat == FORMAT_PVK) {
1.1 jsing 338: EVP_PKEY *pk;
339: pk = EVP_PKEY_new();
340: EVP_PKEY_set1_DSA(pk, dsa);
1.3 doug 341: if (dsa_config.outformat == FORMAT_PVK)
342: i = i2b_PVK_bio(out, pk, dsa_config.pvk_encr, 0,
343: passout);
344: else if (dsa_config.pubin || dsa_config.pubout)
1.1 jsing 345: i = i2b_PublicKey_bio(out, pk);
346: else
347: i = i2b_PrivateKey_bio(out, pk);
348: EVP_PKEY_free(pk);
349: #endif
350: } else {
351: BIO_printf(bio_err, "bad output format specified for outfile\n");
352: goto end;
353: }
354: if (i <= 0) {
355: BIO_printf(bio_err, "unable to write private key\n");
356: ERR_print_errors(bio_err);
357: } else
358: ret = 0;
1.11 jsing 359: end:
1.1 jsing 360: BIO_free(in);
1.10 jsing 361: BIO_free_all(out);
362: DSA_free(dsa);
1.1 jsing 363: free(passin);
364: free(passout);
365:
366: return (ret);
367: }
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