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)
91 int i,badops=0,text=0;
92 BIO *in=NULL,*out=NULL;
93 int informat,outformat,check=0,noout=0,C=0,ret=1;
94 char *infile,*outfile,*prog;
99 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
100 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
105 outformat=FORMAT_PEM;
112 if (strcmp(*argv,"-inform") == 0)
114 if (--argc < 1) goto bad;
115 informat=str2fmt(*(++argv));
117 else if (strcmp(*argv,"-outform") == 0)
119 if (--argc < 1) goto bad;
120 outformat=str2fmt(*(++argv));
122 else if (strcmp(*argv,"-in") == 0)
124 if (--argc < 1) goto bad;
127 else if (strcmp(*argv,"-out") == 0)
129 if (--argc < 1) goto bad;
132 else if (strcmp(*argv,"-check") == 0)
134 else if (strcmp(*argv,"-text") == 0)
136 else if (strcmp(*argv,"-C") == 0)
138 else if (strcmp(*argv,"-noout") == 0)
142 BIO_printf(bio_err,"unknown option %s\n",*argv);
153 BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);
154 BIO_printf(bio_err,"where options are\n");
155 BIO_printf(bio_err," -inform arg input format - one of DER PEM\n");
156 BIO_printf(bio_err," -outform arg output format - one of DER PEM\n");
157 BIO_printf(bio_err," -in arg input file\n");
158 BIO_printf(bio_err," -out arg output file\n");
159 BIO_printf(bio_err," -check check the DH parameters\n");
160 BIO_printf(bio_err," -text print a text form of the DH parameters\n");
161 BIO_printf(bio_err," -C Output C code\n");
162 BIO_printf(bio_err," -noout no output\n");
166 ERR_load_crypto_strings();
168 in=BIO_new(BIO_s_file());
169 out=BIO_new(BIO_s_file());
170 if ((in == NULL) || (out == NULL))
172 ERR_print_errors(bio_err);
177 BIO_set_fp(in,stdin,BIO_NOCLOSE);
180 if (BIO_read_filename(in,infile) <= 0)
187 BIO_set_fp(out,stdout,BIO_NOCLOSE);
190 if (BIO_write_filename(out,outfile) <= 0)
197 if (informat == FORMAT_ASN1)
198 dh=d2i_DHparams_bio(in,NULL);
199 else if (informat == FORMAT_PEM)
200 dh=PEM_read_bio_DHparams(in,NULL,NULL,NULL);
203 BIO_printf(bio_err,"bad input format specified\n");
208 BIO_printf(bio_err,"unable to load DH parameters\n");
209 ERR_print_errors(bio_err);
217 DHparams_print(out,dh);
220 BN_print(stdout,dh->p);
222 BN_print(stdout,dh->g);
225 printf("recommended private length=%ld\n",dh->length);
231 if (!DH_check(dh,&i))
233 ERR_print_errors(bio_err);
236 if (i & DH_CHECK_P_NOT_PRIME)
237 printf("p value is not prime\n");
238 if (i & DH_CHECK_P_NOT_SAFE_PRIME)
239 printf("p value is not a safe prime\n");
240 if (i & DH_UNABLE_TO_CHECK_GENERATOR)
241 printf("unable to check the generator value\n");
242 if (i & DH_NOT_SUITABLE_GENERATOR)
243 printf("the g value is not a generator\n");
245 printf("DH parameters appear to be ok.\n");
252 len=BN_num_bytes(dh->p);
253 bits=BN_num_bits(dh->p);
254 data=(unsigned char *)OPENSSL_malloc(len);
257 perror("OPENSSL_malloc");
260 l=BN_bn2bin(dh->p,data);
261 printf("static unsigned char dh%d_p[]={",bits);
264 if ((i%12) == 0) printf("\n\t");
265 printf("0x%02X,",data[i]);
269 l=BN_bn2bin(dh->g,data);
270 printf("static unsigned char dh%d_g[]={",bits);
273 if ((i%12) == 0) printf("\n\t");
274 printf("0x%02X,",data[i]);
276 printf("\n\t};\n\n");
278 printf("DH *get_dh%d()\n\t{\n",bits);
279 printf("\tDH *dh;\n\n");
280 printf("\tif ((dh=DH_new()) == NULL) return(NULL);\n");
281 printf("\tdh->p=BN_bin2bn(dh%d_p,sizeof(dh%d_p),NULL);\n",
283 printf("\tdh->g=BN_bin2bn(dh%d_g,sizeof(dh%d_g),NULL);\n",
285 printf("\tif ((dh->p == NULL) || (dh->g == NULL))\n");
286 printf("\t\treturn(NULL);\n");
287 printf("\treturn(dh);\n\t}\n");
294 if (outformat == FORMAT_ASN1)
295 i=i2d_DHparams_bio(out,dh);
296 else if (outformat == FORMAT_PEM)
297 i=PEM_write_bio_DHparams(out,dh);
299 BIO_printf(bio_err,"bad output format specified for outfile\n");
304 BIO_printf(bio_err,"unable to write DH parameters\n");
305 ERR_print_errors(bio_err);
311 if (in != NULL) BIO_free(in);
312 if (out != NULL) BIO_free(out);
313 if (dh != NULL) DH_free(dh);