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
59int MAIN(int, char **);
60
61int 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