Annotation of src/usr.bin/openssl/prime.c, Revision 1.3
1.3 ! bcook 1: /* $OpenBSD: prime.c,v 1.2 2014/08/27 15:55:23 jsing Exp $ */
1.1 jsing 2: /* ====================================================================
3: * Copyright (c) 2004 The OpenSSL Project. All rights reserved.
4: *
5: * Redistribution and use in source and binary forms, with or without
6: * modification, are permitted provided that the following conditions
7: * are met:
8: *
9: * 1. Redistributions of source code must retain the above copyright
10: * notice, this list of conditions and the following disclaimer.
11: *
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in
14: * the documentation and/or other materials provided with the
15: * distribution.
16: *
17: * 3. All advertising materials mentioning features or use of this
18: * software must display the following acknowledgment:
19: * "This product includes software developed by the OpenSSL Project
20: * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
21: *
22: * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23: * endorse or promote products derived from this software without
24: * prior written permission. For written permission, please contact
25: * openssl-core@openssl.org.
26: *
27: * 5. Products derived from this software may not be called "OpenSSL"
28: * nor may "OpenSSL" appear in their names without prior written
29: * permission of the OpenSSL Project.
30: *
31: * 6. Redistributions of any form whatsoever must retain the following
32: * acknowledgment:
33: * "This product includes software developed by the OpenSSL Project
34: * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
35: *
36: * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37: * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
40: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43: * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47: * OF THE POSSIBILITY OF SUCH DAMAGE.
48: *
49: */
50:
51: #include <string.h>
52: #include <limits.h>
53:
54: #include "apps.h"
55:
56: #include <openssl/bn.h>
57:
1.2 jsing 58: struct {
59: int bits;
60: int checks;
61: int generate;
62: int hex;
63: int safe;
64: } prime_config;
65:
66: struct option prime_options[] = {
67: {
68: .name = "bits",
69: .argname = "n",
70: .desc = "Number of bits in the generated prime number",
71: .type = OPTION_ARG_INT,
72: .opt.value = &prime_config.bits,
73: },
74: {
75: .name = "checks",
76: .argname = "n",
77: .desc = "Miller-Rabin probablistic primality test iterations",
78: .type = OPTION_ARG_INT,
79: .opt.value = &prime_config.checks,
80: },
81: {
82: .name = "generate",
83: .desc = "Generate a pseudo-random prime number",
84: .type = OPTION_FLAG,
85: .opt.flag = &prime_config.generate,
86: },
87: {
88: .name = "hex",
89: .desc = "Hexadecimal prime numbers",
90: .type = OPTION_FLAG,
91: .opt.flag = &prime_config.hex,
92: },
93: {
94: .name = "safe",
95: .desc = "Generate only \"safe\" prime numbers",
96: .type = OPTION_FLAG,
97: .opt.flag = &prime_config.safe,
98: },
1.3 ! bcook 99: {NULL},
1.2 jsing 100: };
101:
102: static void
103: prime_usage()
104: {
105: fprintf(stderr,
106: "usage: prime [-bits n] [-checks n] [-generate] [-hex] [-safe] "
107: "p\n");
108: options_usage(prime_options);
109: }
110:
1.1 jsing 111: int prime_main(int, char **);
112:
113: int
114: prime_main(int argc, char **argv)
115: {
116: BIGNUM *bn = NULL;
1.2 jsing 117: char *prime = NULL;
1.1 jsing 118: BIO *bio_out;
1.2 jsing 119: char *s;
120:
121: memset(&prime_config, 0, sizeof(prime_config));
122:
123: /* Default iterations for Miller-Rabin probabilistic primality test. */
124: prime_config.checks = 20;
1.1 jsing 125:
1.2 jsing 126: if (options_parse(argc, argv, prime_options, &prime) != 0) {
127: prime_usage();
128: return (1);
1.1 jsing 129: }
130:
1.2 jsing 131: if (prime == NULL && prime_config.generate == 0) {
132: BIO_printf(bio_err, "No prime specified.\n");
133: prime_usage();
134: return (1);
1.1 jsing 135: }
1.2 jsing 136:
1.1 jsing 137: if ((bio_out = BIO_new(BIO_s_file())) != NULL) {
138: BIO_set_fp(bio_out, stdout, BIO_NOCLOSE);
139: }
140:
1.2 jsing 141: if (prime_config.generate != 0) {
142: if (prime_config.bits == 0) {
143: BIO_printf(bio_err, "Specify the number of bits.\n");
1.1 jsing 144: return 1;
145: }
1.2 jsing 146: bn = BN_new(); /* XXX - unchecked malloc. */
147: BN_generate_prime_ex(bn, prime_config.bits, prime_config.safe,
148: NULL, NULL, NULL);
149: s = prime_config.hex ? BN_bn2hex(bn) : BN_bn2dec(bn);
1.1 jsing 150: BIO_printf(bio_out, "%s\n", s);
151: free(s);
152: } else {
1.2 jsing 153: if (prime_config.hex)
154: BN_hex2bn(&bn, prime);
1.1 jsing 155: else
1.2 jsing 156: BN_dec2bn(&bn, prime);
1.1 jsing 157:
158: BN_print(bio_out, bn);
159: BIO_printf(bio_out, " is %sprime\n",
1.2 jsing 160: BN_is_prime_ex(bn, prime_config.checks,
161: NULL, NULL) ? "" : "not ");
1.1 jsing 162: }
163:
164: BN_free(bn);
165: BIO_free_all(bio_out);
166:
167: return 0;
168: }
![[BACK]](/icons/back.gif){kind=icon}
Return to prime.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / openssl