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.]
74 /* -inform arg - input format - default PEM (one of DER, TXT or PEM)
75 * -outform arg - output format - default PEM
76 * -in arg - input file - default stdin
77 * -out arg - output file - default stdout
78 * -check - check the parameters are ok
89 int i
,badops
=0,text
=0;
90 BIO
*in
=NULL
,*out
=NULL
;
91 int informat
,outformat
,check
=0,noout
=0,C
=0,ret
=1;
92 char *infile
,*outfile
,*prog
;
97 if ((bio_err
=BIO_new(BIO_s_file())) != NULL
)
98 BIO_set_fp(bio_err
,stderr
,BIO_NOCLOSE
);
103 outformat
=FORMAT_PEM
;
110 if (strcmp(*argv
,"-inform") == 0)
112 if (--argc
< 1) goto bad
;
113 informat
=str2fmt(*(++argv
));
115 else if (strcmp(*argv
,"-outform") == 0)
117 if (--argc
< 1) goto bad
;
118 outformat
=str2fmt(*(++argv
));
120 else if (strcmp(*argv
,"-in") == 0)
122 if (--argc
< 1) goto bad
;
125 else if (strcmp(*argv
,"-out") == 0)
127 if (--argc
< 1) goto bad
;
130 else if (strcmp(*argv
,"-check") == 0)
132 else if (strcmp(*argv
,"-text") == 0)
134 else if (strcmp(*argv
,"-C") == 0)
136 else if (strcmp(*argv
,"-noout") == 0)
140 BIO_printf(bio_err
,"unknown option %s\n",*argv
);
151 BIO_printf(bio_err
,"%s [options] <infile >outfile\n",prog
);
152 BIO_printf(bio_err
,"where options are\n");
153 BIO_printf(bio_err
," -inform arg input format - one of DER TXT PEM\n");
154 BIO_printf(bio_err
," -outform arg output format - one of DER TXT PEM\n");
155 BIO_printf(bio_err
," -in arg inout file\n");
156 BIO_printf(bio_err
," -out arg output file\n");
157 BIO_printf(bio_err
," -check check the DH parameters\n");
158 BIO_printf(bio_err
," -text check the DH parameters\n");
159 BIO_printf(bio_err
," -C Output C code\n");
160 BIO_printf(bio_err
," -noout no output\n");
164 ERR_load_crypto_strings();
166 in
=BIO_new(BIO_s_file());
167 out
=BIO_new(BIO_s_file());
168 if ((in
== NULL
) || (out
== NULL
))
170 ERR_print_errors(bio_err
);
175 BIO_set_fp(in
,stdin
,BIO_NOCLOSE
);
178 if (BIO_read_filename(in
,infile
) <= 0)
185 BIO_set_fp(out
,stdout
,BIO_NOCLOSE
);
188 if (BIO_write_filename(out
,outfile
) <= 0)
195 if (informat
== FORMAT_ASN1
)
196 dh
=d2i_DHparams_bio(in
,NULL
);
197 else if (informat
== FORMAT_PEM
)
198 dh
=PEM_read_bio_DHparams(in
,NULL
,NULL
);
201 BIO_printf(bio_err
,"bad input format specified\n");
206 BIO_printf(bio_err
,"unable to load DH parameters\n");
207 ERR_print_errors(bio_err
);
215 DHparams_print(out
,dh
);
218 BN_print(stdout
,dh
->p
);
220 BN_print(stdout
,dh
->g
);
223 printf("recomented private length=%ld\n",dh
->length
);
229 if (!DH_check(dh
,&i
))
231 ERR_print_errors(bio_err
);
234 if (i
& DH_CHECK_P_NOT_PRIME
)
235 printf("p value is not prime\n");
236 if (i
& DH_CHECK_P_NOT_STRONG_PRIME
)
237 printf("p value is not a strong prime\n");
238 if (i
& DH_UNABLE_TO_CHECK_GENERATOR
)
239 printf("unable to check the generator value\n");
240 if (i
& DH_NOT_SUITABLE_GENERATOR
)
241 printf("the g value is not a generator\n");
243 printf("DH parameters appear to be ok.\n");
250 len
=BN_num_bytes(dh
->p
);
251 bits
=BN_num_bits(dh
->p
);
252 data
=(unsigned char *)Malloc(len
);
258 l
=BN_bn2bin(dh
->p
,data
);
259 printf("static unsigned char dh%d_p[]={",bits
);
262 if ((i
%12) == 0) printf("\n\t");
263 printf("0x%02X,",data
[i
]);
267 l
=BN_bn2bin(dh
->g
,data
);
268 printf("static unsigned char dh%d_g[]={",bits
);
271 if ((i
%12) == 0) printf("\n\t");
272 printf("0x%02X,",data
[i
]);
274 printf("\n\t};\n\n");
276 printf("DH *get_dh%d()\n\t{\n",bits
);
277 printf("\tDH *dh;\n\n");
278 printf("\tif ((dh=DH_new()) == NULL) return(NULL);\n");
279 printf("\tdh->p=BN_bin2bn(dh%d_p,sizeof(dh%d_p),NULL);\n",
281 printf("\tdh->g=BN_bin2bn(dh%d_g,sizeof(dh%d_g),NULL);\n",
283 printf("\tif ((dh->p == NULL) || (dh->g == NULL))\n");
284 printf("\t\treturn(NULL);\n");
285 printf("\treturn(dh);\n\t}\n");
291 if (outformat
== FORMAT_ASN1
)
292 i
=i2d_DHparams_bio(out
,dh
);
293 else if (outformat
== FORMAT_PEM
)
294 i
=PEM_write_bio_DHparams(out
,dh
);
296 BIO_printf(bio_err
,"bad output format specified for outfile\n");
301 BIO_printf(bio_err
,"unable to write DH paramaters\n");
302 ERR_print_errors(bio_err
);
308 if (in
!= NULL
) BIO_free(in
);
309 if (out
!= NULL
) BIO_free(out
);
310 if (dh
!= NULL
) DH_free(dh
);