]>
git.ipfire.org Git - thirdparty/openssl.git/blob - apps/gendsa.c
2 /* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
61 #include <sys/types.h>
74 #define PROG gendsa_main
77 static long dsa_load_rand(char *names
);
79 static long dsa_load_rand();
88 int ret
=1,num
=DEFBITS
;
90 char *inrand
=NULL
,*randfile
,*dsaparams
=NULL
;
91 BIO
*out
=NULL
,*in
=NULL
;
96 if ((bio_err
=BIO_new(BIO_s_file())) != NULL
)
97 BIO_set_fp(bio_err
,stderr
,BIO_NOCLOSE
);
103 if (argc
<= 0) break;
104 if (strcmp(*argv
,"-out") == 0)
106 if (--argc
< 1) goto bad
;
109 else if (strcmp(*argv
,"-rand") == 0)
111 if (--argc
< 1) goto bad
;
114 else if (strcmp(*argv
,"-") == 0)
116 else if (dsaparams
== NULL
)
126 if (dsaparams
== NULL
)
129 BIO_printf(bio_err
,"usage: gendsa [args] [numbits]\n");
130 BIO_printf(bio_err
," -out file - output the key to 'file\n");
131 BIO_printf(bio_err
," -rand file:file:...\n");
132 BIO_printf(bio_err
," - load the file (or the files in the directory) into\n");
133 BIO_printf(bio_err
," the random number generator\n");
137 in
=BIO_new(BIO_s_file());
138 if (!(BIO_read_filename(in
,"r")))
144 if ((dsa
=PEM_read_bio_DSAparams(in
,NULL
,NULL
)) == NULL
)
146 BIO_printf(bio_err
,"unable to load DSA parameter file\n");
151 out
=BIO_new(BIO_s_file());
152 if (out
== NULL
) goto end
;
155 BIO_set_fp(out
,stdout
,BIO_NOCLOSE
);
158 if (BIO_write_filename(out
,outfile
) <= 0)
165 randfile
=RAND_file_name(buffer
,200);
166 if ((randfile
== NULL
)|| !RAND_load_file(randfile
,1024L*1024L))
167 BIO_printf(bio_err
,"unable to load 'random state'\n");
170 BIO_printf(bio_err
,"warning, not much extra random data, consider using the -rand option\n");
173 BIO_printf(bio_err
,"%ld semi-random bytes loaded\n",
174 dsa_load_rand(inrand
));
177 BIO_printf(bio_err
,"Generating DSA parameters, %d bit long prime\n",num
);
178 BIO_printf(bio_err
,"This could take some time\n");
179 if (!DSA_generate_key(dsa
)) goto end
;
181 if (randfile
== NULL
)
182 BIO_printf(bio_err
,"unable to write 'random state'\n");
184 RAND_write_file(randfile
);
186 if (!PEM_write_bio_DSAPrivateKey(out
,dsa
,EVP_des_ede3_cbc(),NULL
,0,NULL
))
191 ERR_print_errors(bio_err
);
192 if (out
!= NULL
) BIO_free(out
);
193 if (dsa
!= NULL
) DSA_free(dsa
);
197 static long dsa_load_rand(name
)
207 for (p
=name
; ((*p
!= '\0') && (*p
!= LIST_SEPARATOR_CHAR
)); p
++);
208 if (*p
== '\0') last
=1;
212 if (*n
== '\0') break;
214 tot
+=RAND_load_file(n
,1);