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>
72 #include <openssl/engine.h>
77 /* -inform arg - input format - default PEM (DER or PEM)
78 * -outform arg - output format - default PEM
79 * -in arg - input file - default stdin
80 * -out arg - output file - default stdout
81 * -check - check the parameters are ok
87 int MAIN(int, char **);
89 int MAIN(int argc, char **argv)
93 int i,badops=0,text=0;
94 BIO *in=NULL,*out=NULL;
95 int informat,outformat,check=0,noout=0,C=0,ret=1;
96 char *infile,*outfile,*prog,*engine;
101 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
102 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
108 outformat=FORMAT_PEM;
115 if (strcmp(*argv,"-inform") == 0)
117 if (--argc < 1) goto bad;
118 informat=str2fmt(*(++argv));
120 else if (strcmp(*argv,"-outform") == 0)
122 if (--argc < 1) goto bad;
123 outformat=str2fmt(*(++argv));
125 else if (strcmp(*argv,"-in") == 0)
127 if (--argc < 1) goto bad;
130 else if (strcmp(*argv,"-out") == 0)
132 if (--argc < 1) goto bad;
135 else if (strcmp(*argv,"-engine") == 0)
137 if (--argc < 1) goto bad;
140 else if (strcmp(*argv,"-check") == 0)
142 else if (strcmp(*argv,"-text") == 0)
144 else if (strcmp(*argv,"-C") == 0)
146 else if (strcmp(*argv,"-noout") == 0)
150 BIO_printf(bio_err,"unknown option %s\n",*argv);
161 BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);
162 BIO_printf(bio_err,"where options are\n");
163 BIO_printf(bio_err," -inform arg input format - one of DER PEM\n");
164 BIO_printf(bio_err," -outform arg output format - one of DER PEM\n");
165 BIO_printf(bio_err," -in arg input file\n");
166 BIO_printf(bio_err," -out arg output file\n");
167 BIO_printf(bio_err," -check check the DH parameters\n");
168 BIO_printf(bio_err," -text print a text form of the DH parameters\n");
169 BIO_printf(bio_err," -C Output C code\n");
170 BIO_printf(bio_err," -noout no output\n");
171 BIO_printf(bio_err," -engine e use engine e, possibly a hardware device.\n");
175 ERR_load_crypto_strings();
177 e = setup_engine(bio_err, engine, 0);
179 in=BIO_new(BIO_s_file());
180 out=BIO_new(BIO_s_file());
181 if ((in == NULL) || (out == NULL))
183 ERR_print_errors(bio_err);
188 BIO_set_fp(in,stdin,BIO_NOCLOSE);
191 if (BIO_read_filename(in,infile) <= 0)
199 BIO_set_fp(out,stdout,BIO_NOCLOSE);
200 #ifdef OPENSSL_SYS_VMS
202 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
203 out = BIO_push(tmpbio, out);
209 if (BIO_write_filename(out,outfile) <= 0)
216 if (informat == FORMAT_ASN1)
217 dh=d2i_DHparams_bio(in,NULL);
218 else if (informat == FORMAT_PEM)
219 dh=PEM_read_bio_DHparams(in,NULL,NULL,NULL);
222 BIO_printf(bio_err,"bad input format specified\n");
227 BIO_printf(bio_err,"unable to load DH parameters\n");
228 ERR_print_errors(bio_err);
236 DHparams_print(out,dh);
239 BN_print(stdout,dh->p);
241 BN_print(stdout,dh->g);
244 printf("recommended private length=%ld\n",dh->length);
250 if (!DH_check(dh,&i))
252 ERR_print_errors(bio_err);
255 if (i & DH_CHECK_P_NOT_PRIME)
256 printf("p value is not prime\n");
257 if (i & DH_CHECK_P_NOT_SAFE_PRIME)
258 printf("p value is not a safe prime\n");
259 if (i & DH_UNABLE_TO_CHECK_GENERATOR)
260 printf("unable to check the generator value\n");
261 if (i & DH_NOT_SUITABLE_GENERATOR)
262 printf("the g value is not a generator\n");
264 printf("DH parameters appear to be ok.\n");
271 len=BN_num_bytes(dh->p);
272 bits=BN_num_bits(dh->p);
273 data=(unsigned char *)OPENSSL_malloc(len);
276 perror("OPENSSL_malloc");
279 l=BN_bn2bin(dh->p,data);
280 printf("static unsigned char dh%d_p[]={",bits);
283 if ((i%12) == 0) printf("\n\t");
284 printf("0x%02X,",data[i]);
288 l=BN_bn2bin(dh->g,data);
289 printf("static unsigned char dh%d_g[]={",bits);
292 if ((i%12) == 0) printf("\n\t");
293 printf("0x%02X,",data[i]);
295 printf("\n\t};\n\n");
297 printf("DH *get_dh%d()\n\t{\n",bits);
298 printf("\tDH *dh;\n\n");
299 printf("\tif ((dh=DH_new()) == NULL) return(NULL);\n");
300 printf("\tdh->p=BN_bin2bn(dh%d_p,sizeof(dh%d_p),NULL);\n",
302 printf("\tdh->g=BN_bin2bn(dh%d_g,sizeof(dh%d_g),NULL);\n",
304 printf("\tif ((dh->p == NULL) || (dh->g == NULL))\n");
305 printf("\t\treturn(NULL);\n");
306 printf("\treturn(dh);\n\t}\n");
313 if (outformat == FORMAT_ASN1)
314 i=i2d_DHparams_bio(out,dh);
315 else if (outformat == FORMAT_PEM)
316 i=PEM_write_bio_DHparams(out,dh);
318 BIO_printf(bio_err,"bad output format specified for outfile\n");
323 BIO_printf(bio_err,"unable to write DH parameters\n");
324 ERR_print_errors(bio_err);
330 if (in != NULL) BIO_free(in);
331 if (out != NULL) BIO_free_all(out);
332 if (dh != NULL) DH_free(dh);