2 /* obsoleted by dhparam.c */
3 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
6 * This package is an SSL implementation written
7 * by Eric Young (eay@cryptsoft.com).
8 * The implementation was written so as to conform with Netscapes SSL.
10 * This library is free for commercial and non-commercial use as long as
11 * the following conditions are aheared to. The following conditions
12 * apply to all code found in this distribution, be it the RC4, RSA,
13 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
14 * included with this distribution is covered by the same copyright terms
15 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
17 * Copyright remains Eric Young's, and as such any Copyright notices in
18 * the code are not to be removed.
19 * If this package is used in a product, Eric Young should be given attribution
20 * as the author of the parts of the library used.
21 * This can be in the form of a textual message at program startup or
22 * in documentation (online or textual) provided with the package.
24 * Redistribution and use in source and binary forms, with or without
25 * modification, are permitted provided that the following conditions
27 * 1. Redistributions of source code must retain the copyright
28 * notice, this list of conditions and the following disclaimer.
29 * 2. Redistributions in binary form must reproduce the above copyright
30 * notice, this list of conditions and the following disclaimer in the
31 * documentation and/or other materials provided with the distribution.
32 * 3. All advertising materials mentioning features or use of this software
33 * must display the following acknowledgement:
34 * "This product includes cryptographic software written by
35 * Eric Young (eay@cryptsoft.com)"
36 * The word 'cryptographic' can be left out if the rouines from the library
37 * being used are not cryptographic related :-).
38 * 4. If you include any Windows specific code (or a derivative thereof) from
39 * the apps directory (application code) you must include an acknowledgement:
40 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
42 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
43 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
44 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
45 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
46 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
47 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
48 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
49 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
50 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
51 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
54 * The licence and distribution terms for any publically available version or
55 * derivative of this code cannot be changed. i.e. this code cannot simply be
56 * copied and put under another distribution licence
57 * [including the GNU Public Licence.]
66 #include <openssl/bio.h>
67 #include <openssl/err.h>
68 #include <openssl/bn.h>
69 #include <openssl/dh.h>
70 #include <openssl/x509.h>
71 #include <openssl/pem.h>
76 /* -inform arg - input format - default PEM (DER or PEM)
77 * -outform arg - output format - default PEM
78 * -in arg - input file - default stdin
79 * -out arg - output file - default stdout
80 * -check - check the parameters are ok
86 int MAIN(int, char **);
88 int MAIN(int argc
, char **argv
)
92 int i
,badops
=0,text
=0;
93 BIO
*in
=NULL
,*out
=NULL
;
94 int informat
,outformat
,check
=0,noout
=0,C
=0,ret
=1;
95 char *infile
,*outfile
,*prog
,*engine
;
100 if ((bio_err
=BIO_new(BIO_s_file())) != NULL
)
101 BIO_set_fp(bio_err
,stderr
,BIO_NOCLOSE
|BIO_FP_TEXT
);
107 outformat
=FORMAT_PEM
;
114 if (strcmp(*argv
,"-inform") == 0)
116 if (--argc
< 1) goto bad
;
117 informat
=str2fmt(*(++argv
));
119 else if (strcmp(*argv
,"-outform") == 0)
121 if (--argc
< 1) goto bad
;
122 outformat
=str2fmt(*(++argv
));
124 else if (strcmp(*argv
,"-in") == 0)
126 if (--argc
< 1) goto bad
;
129 else if (strcmp(*argv
,"-out") == 0)
131 if (--argc
< 1) goto bad
;
134 else if (strcmp(*argv
,"-engine") == 0)
136 if (--argc
< 1) goto bad
;
139 else if (strcmp(*argv
,"-check") == 0)
141 else if (strcmp(*argv
,"-text") == 0)
143 else if (strcmp(*argv
,"-C") == 0)
145 else if (strcmp(*argv
,"-noout") == 0)
149 BIO_printf(bio_err
,"unknown option %s\n",*argv
);
160 BIO_printf(bio_err
,"%s [options] <infile >outfile\n",prog
);
161 BIO_printf(bio_err
,"where options are\n");
162 BIO_printf(bio_err
," -inform arg input format - one of DER PEM\n");
163 BIO_printf(bio_err
," -outform arg output format - one of DER PEM\n");
164 BIO_printf(bio_err
," -in arg input file\n");
165 BIO_printf(bio_err
," -out arg output file\n");
166 BIO_printf(bio_err
," -check check the DH parameters\n");
167 BIO_printf(bio_err
," -text print a text form of the DH parameters\n");
168 BIO_printf(bio_err
," -C Output C code\n");
169 BIO_printf(bio_err
," -noout no output\n");
170 BIO_printf(bio_err
," -engine e use engine e, possibly a hardware device.\n");
174 ERR_load_crypto_strings();
176 e
= setup_engine(bio_err
, engine
, 0);
178 in
=BIO_new(BIO_s_file());
179 out
=BIO_new(BIO_s_file());
180 if ((in
== NULL
) || (out
== NULL
))
182 ERR_print_errors(bio_err
);
187 BIO_set_fp(in
,stdin
,BIO_NOCLOSE
);
190 if (BIO_read_filename(in
,infile
) <= 0)
198 BIO_set_fp(out
,stdout
,BIO_NOCLOSE
);
199 #ifdef OPENSSL_SYS_VMS
201 BIO
*tmpbio
= BIO_new(BIO_f_linebuffer());
202 out
= BIO_push(tmpbio
, out
);
208 if (BIO_write_filename(out
,outfile
) <= 0)
215 if (informat
== FORMAT_ASN1
)
216 dh
=d2i_DHparams_bio(in
,NULL
);
217 else if (informat
== FORMAT_PEM
)
218 dh
=PEM_read_bio_DHparams(in
,NULL
,NULL
,NULL
);
221 BIO_printf(bio_err
,"bad input format specified\n");
226 BIO_printf(bio_err
,"unable to load DH parameters\n");
227 ERR_print_errors(bio_err
);
235 DHparams_print(out
,dh
);
238 BN_print(stdout
,dh
->p
);
240 BN_print(stdout
,dh
->g
);
243 printf("recommended private length=%ld\n",dh
->length
);
249 if (!DH_check(dh
,&i
))
251 ERR_print_errors(bio_err
);
254 if (i
& DH_CHECK_P_NOT_PRIME
)
255 printf("p value is not prime\n");
256 if (i
& DH_CHECK_P_NOT_SAFE_PRIME
)
257 printf("p value is not a safe prime\n");
258 if (i
& DH_UNABLE_TO_CHECK_GENERATOR
)
259 printf("unable to check the generator value\n");
260 if (i
& DH_NOT_SUITABLE_GENERATOR
)
261 printf("the g value is not a generator\n");
263 printf("DH parameters appear to be ok.\n");
270 len
=BN_num_bytes(dh
->p
);
271 bits
=BN_num_bits(dh
->p
);
272 data
=(unsigned char *)OPENSSL_malloc(len
);
275 perror("OPENSSL_malloc");
278 l
=BN_bn2bin(dh
->p
,data
);
279 printf("static unsigned char dh%d_p[]={",bits
);
282 if ((i
%12) == 0) printf("\n\t");
283 printf("0x%02X,",data
[i
]);
287 l
=BN_bn2bin(dh
->g
,data
);
288 printf("static unsigned char dh%d_g[]={",bits
);
291 if ((i
%12) == 0) printf("\n\t");
292 printf("0x%02X,",data
[i
]);
294 printf("\n\t};\n\n");
296 printf("DH *get_dh%d()\n\t{\n",bits
);
297 printf("\tDH *dh;\n\n");
298 printf("\tif ((dh=DH_new()) == NULL) return(NULL);\n");
299 printf("\tdh->p=BN_bin2bn(dh%d_p,sizeof(dh%d_p),NULL);\n",
301 printf("\tdh->g=BN_bin2bn(dh%d_g,sizeof(dh%d_g),NULL);\n",
303 printf("\tif ((dh->p == NULL) || (dh->g == NULL))\n");
304 printf("\t\treturn(NULL);\n");
305 printf("\treturn(dh);\n\t}\n");
312 if (outformat
== FORMAT_ASN1
)
313 i
=i2d_DHparams_bio(out
,dh
);
314 else if (outformat
== FORMAT_PEM
)
315 i
=PEM_write_bio_DHparams(out
,dh
);
317 BIO_printf(bio_err
,"bad output format specified for outfile\n");
322 BIO_printf(bio_err
,"unable to write DH parameters\n");
323 ERR_print_errors(bio_err
);
329 if (in
!= NULL
) BIO_free(in
);
330 if (out
!= NULL
) BIO_free_all(out
);
331 if (dh
!= NULL
) DH_free(dh
);