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git.ipfire.org Git - thirdparty/openssl.git/blob - apps/genrsa.c
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2 /* Copyright (C) 1995-1998 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>
75 #define PROG genrsa_main
78 static void MS_CALLBACK
genrsa_cb(int p
, int n
, char *arg
);
79 static long gr_load_rand(char *names
);
81 static void MS_CALLBACK
genrsa_cb();
82 static long gr_load_rand();
95 unsigned long f4
=RSA_F4
;
97 char *inrand
=NULL
,*randfile
;
103 if ((bio_err
=BIO_new(BIO_s_file())) != NULL
)
104 BIO_set_fp(bio_err
,stderr
,BIO_NOCLOSE
|BIO_FP_TEXT
);
105 if ((out
=BIO_new(BIO_s_file())) == NULL
)
107 BIO_printf(bio_err
,"unable to creat BIO for output\n");
115 if (argc
<= 0) break;
116 if (strcmp(*argv
,"-out") == 0)
118 if (--argc
< 1) goto bad
;
121 else if (strcmp(*argv
,"-3") == 0)
123 else if (strcmp(*argv
,"-F4") == 0)
125 else if (strcmp(*argv
,"-rand") == 0)
127 if (--argc
< 1) goto bad
;
131 else if (strcmp(*argv
,"-des") == 0)
133 else if (strcmp(*argv
,"-des3") == 0)
134 enc
=EVP_des_ede3_cbc();
137 else if (strcmp(*argv
,"-idea") == 0)
145 if ((argc
>= 1) && ((sscanf(*argv
,"%d",&num
) == 0) || (num
< 0)))
148 BIO_printf(bio_err
,"usage: genrsa [args] [numbits]\n");
149 BIO_printf(bio_err
," -des - encrypt the generated key with DES in cbc mode\n");
150 BIO_printf(bio_err
," -des3 - encrypt the generated key with DES in ede cbc mode (168 bit key)\n");
152 BIO_printf(bio_err
," -idea - encrypt the generated key with IDEA in cbc mode\n");
154 BIO_printf(bio_err
," -out file - output the key to 'file\n");
155 BIO_printf(bio_err
," -f4 - use F4 (0x10001) for the E value\n");
156 BIO_printf(bio_err
," -3 - use 3 for the E value\n");
157 BIO_printf(bio_err
," -rand file:file:...\n");
158 BIO_printf(bio_err
," - load the file (or the files in the directory) into\n");
159 BIO_printf(bio_err
," the random number generator\n");
163 ERR_load_crypto_strings();
165 BIO_set_fp(out
,stdout
,BIO_NOCLOSE
);
168 if (BIO_write_filename(out
,outfile
) <= 0)
176 BIO_printf(bio_err
,"Loading 'screen' into random state -");
179 BIO_printf(bio_err
," done\n");
181 randfile
=RAND_file_name(buffer
,200);
182 if ((randfile
== NULL
) ||
183 !(rnum
=(long)RAND_load_file(randfile
,1024L*1024L)))
185 BIO_printf(bio_err
,"unable to load 'random state'\n");
192 BIO_printf(bio_err
,"warning, not much extra random data, consider using the -rand option\n");
197 rnum
+=gr_load_rand(inrand
);
200 BIO_printf(bio_err
,"%ld semi-random bytes loaded\n",rnum
);
202 BIO_printf(bio_err
,"Generating RSA private key, %d bit long modulus\n",
204 rsa
=RSA_generate_key(num
,f4
,genrsa_cb
,(char *)bio_err
);
206 if (randfile
== NULL
)
207 BIO_printf(bio_err
,"unable to write 'random state'\n");
209 RAND_write_file(randfile
);
211 if (rsa
== NULL
) goto err
;
213 /* We need to do the folloing for when the base number size is <
214 * long, esp windows 3.1 :-(. */
216 for (i
=0; i
<rsa
->e
->top
; i
++)
218 #ifndef SIXTY_FOUR_BIT
224 BIO_printf(bio_err
,"e is %ld (0x%lX)\n",l
,l
);
225 if (!PEM_write_bio_RSAPrivateKey(out
,rsa
,enc
,NULL
,0,NULL
))
230 if (rsa
!= NULL
) RSA_free(rsa
);
231 if (out
!= NULL
) BIO_free(out
);
233 ERR_print_errors(bio_err
);
237 static void MS_CALLBACK
genrsa_cb(p
, n
, arg
)
248 BIO_write((BIO
*)arg
,&c
,1);
249 BIO_flush((BIO
*)arg
);
255 static long gr_load_rand(name
)
265 for (p
=name
; ((*p
!= '\0') && (*p
!= LIST_SEPARATOR_CHAR
)); p
++);
266 if (*p
== '\0') last
=1;
270 if (*n
== '\0') break;
272 tot
+=RAND_load_file(n
,1024L*1024L);