1 /* ====================================================================
2 * Copyright (c) 2004 The OpenSSL Project. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in
13 * the documentation and/or other materials provided with the
14 * distribution.
15 *
16 * 3. All advertising materials mentioning features or use of this
17 * software must display the following acknowledgment:
18 * "This product includes software developed by the OpenSSL Project
19 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
20 *
21 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
22 * endorse or promote products derived from this software without
23 * prior written permission. For written permission, please contact
24 * openssl-core@openssl.org.
25 *
26 * 5. Products derived from this software may not be called "OpenSSL"
27 * nor may "OpenSSL" appear in their names without prior written
28 * permission of the OpenSSL Project.
29 *
30 * 6. Redistributions of any form whatsoever must retain the following
31 * acknowledgment:
32 * "This product includes software developed by the OpenSSL Project
33 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
34 *
35 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
36 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
37 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
38 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
39 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
41 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
42 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
43 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
44 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
45 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
46 * OF THE POSSIBILITY OF SUCH DAMAGE.
47 *
48 */
49
50 #include <string.h>
51
52 #include "apps.h"
53 #include <openssl/bn.h>
54
55
56 #undef PROG
57 #define PROG prime_main
58
59 int MAIN(int, char **);
60
MAIN(int argc,char ** argv)61 int MAIN(int argc, char **argv)
62 {
63 int hex=0;
64 int checks=20;
65 int generate=0;
66 int bits=0;
67 int safe=0;
68 BIGNUM *bn=NULL;
69 BIO *bio_out;
70
71 apps_startup();
72
73 if (bio_err == NULL)
74 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
75 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
76
77 --argc;
78 ++argv;
79 while (argc >= 1 && **argv == '-')
80 {
81 if(!strcmp(*argv,"-hex"))
82 hex=1;
83 else if(!strcmp(*argv,"-generate"))
84 generate=1;
85 else if(!strcmp(*argv,"-bits"))
86 if(--argc < 1)
87 goto bad;
88 else
89 bits=atoi(*++argv);
90 else if(!strcmp(*argv,"-safe"))
91 safe=1;
92 else if(!strcmp(*argv,"-checks"))
93 if(--argc < 1)
94 goto bad;
95 else
96 checks=atoi(*++argv);
97 else
98 {
99 BIO_printf(bio_err,"Unknown option '%s'\n",*argv);
100 goto bad;
101 }
102 --argc;
103 ++argv;
104 }
105
106 if (argv[0] == NULL && !generate)
107 {
108 BIO_printf(bio_err,"No prime specified\n");
109 goto bad;
110 }
111
112 if ((bio_out=BIO_new(BIO_s_file())) != NULL)
113 {
114 BIO_set_fp(bio_out,stdout,BIO_NOCLOSE);
115 #ifdef OPENSSL_SYS_VMS
116 {
117 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
118 bio_out = BIO_push(tmpbio, bio_out);
119 }
120 #endif
121 }
122
123 if(generate)
124 {
125 char *s;
126
127 if(!bits)
128 {
129 BIO_printf(bio_err,"Specifiy the number of bits.\n");
130 return 1;
131 }
132 bn=BN_new();
133 BN_generate_prime_ex(bn,bits,safe,NULL,NULL,NULL);
134 s=hex ? BN_bn2hex(bn) : BN_bn2dec(bn);
135 BIO_printf(bio_out,"%s\n",s);
136 OPENSSL_free(s);
137 }
138 else
139 {
140 if(hex)
141 BN_hex2bn(&bn,argv[0]);
142 else
143 BN_dec2bn(&bn,argv[0]);
144
145 BN_print(bio_out,bn);
146 BIO_printf(bio_out," is %sprime\n",
147 BN_is_prime_ex(bn,checks,NULL,NULL) ? "" : "not ");
148 }
149
150 BN_free(bn);
151 BIO_free_all(bio_out);
152
153 return 0;
154
155 bad:
156 BIO_printf(bio_err,"options are\n");
157 BIO_printf(bio_err,"%-14s hex\n","-hex");
158 BIO_printf(bio_err,"%-14s number of checks\n","-checks <n>");
159 return 1;
160 }
161