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.]
58 /* ====================================================================
59 * Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
87 * 6. Redistributions of any form whatsoever must retain the following
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
112 #ifndef OPENSSL_NO_DH
118 #include <openssl/bio.h>
119 #include <openssl/err.h>
120 #include <openssl/bn.h>
121 #include <openssl/dh.h>
122 #include <openssl/x509.h>
123 #include <openssl/pem.h>
125 #ifndef OPENSSL_NO_DSA
126 #include <openssl/dsa.h>
130 #define PROG dhparam_main
134 /* -inform arg - input format - default PEM (DER or PEM)
135 * -outform arg - output format - default PEM
136 * -in arg - input file - default stdin
137 * -out arg - output file - default stdout
138 * -dsaparam - read or generate DSA parameters, convert to DH
139 * -check - check the parameters are ok
145 static void MS_CALLBACK dh_cb(int p, int n, void *arg);
147 int MAIN(int, char **);
149 int MAIN(int argc, char **argv)
153 int i,badops=0,text=0;
154 #ifndef OPENSSL_NO_DSA
157 BIO *in=NULL,*out=NULL;
158 int informat,outformat,check=0,noout=0,C=0,ret=1;
159 char *infile,*outfile,*prog;
160 char *inrand=NULL,*engine=NULL;
166 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
167 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
169 if (!load_config(bio_err, NULL))
175 outformat=FORMAT_PEM;
182 if (strcmp(*argv,"-inform") == 0)
184 if (--argc < 1) goto bad;
185 informat=str2fmt(*(++argv));
187 else if (strcmp(*argv,"-outform") == 0)
189 if (--argc < 1) goto bad;
190 outformat=str2fmt(*(++argv));
192 else if (strcmp(*argv,"-in") == 0)
194 if (--argc < 1) goto bad;
197 else if (strcmp(*argv,"-out") == 0)
199 if (--argc < 1) goto bad;
202 else if (strcmp(*argv,"-engine") == 0)
204 if (--argc < 1) goto bad;
207 else if (strcmp(*argv,"-check") == 0)
209 else if (strcmp(*argv,"-text") == 0)
211 #ifndef OPENSSL_NO_DSA
212 else if (strcmp(*argv,"-dsaparam") == 0)
215 else if (strcmp(*argv,"-C") == 0)
217 else if (strcmp(*argv,"-noout") == 0)
219 else if (strcmp(*argv,"-2") == 0)
221 else if (strcmp(*argv,"-5") == 0)
223 else if (strcmp(*argv,"-rand") == 0)
225 if (--argc < 1) goto bad;
228 else if (((sscanf(*argv,"%d",&num) == 0) || (num <= 0)))
237 BIO_printf(bio_err,"%s [options] [numbits]\n",prog);
238 BIO_printf(bio_err,"where options are\n");
239 BIO_printf(bio_err," -inform arg input format - one of DER PEM\n");
240 BIO_printf(bio_err," -outform arg output format - one of DER PEM\n");
241 BIO_printf(bio_err," -in arg input file\n");
242 BIO_printf(bio_err," -out arg output file\n");
243 #ifndef OPENSSL_NO_DSA
244 BIO_printf(bio_err," -dsaparam read or generate DSA parameters, convert to DH\n");
246 BIO_printf(bio_err," -check check the DH parameters\n");
247 BIO_printf(bio_err," -text print a text form of the DH parameters\n");
248 BIO_printf(bio_err," -C Output C code\n");
249 BIO_printf(bio_err," -2 generate parameters using 2 as the generator value\n");
250 BIO_printf(bio_err," -5 generate parameters using 5 as the generator value\n");
251 BIO_printf(bio_err," numbits number of bits in to generate (default 512)\n");
252 BIO_printf(bio_err," -engine e use engine e, possibly a hardware device.\n");
253 BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
254 BIO_printf(bio_err," - load the file (or the files in the directory) into\n");
255 BIO_printf(bio_err," the random number generator\n");
256 BIO_printf(bio_err," -noout no output\n");
260 ERR_load_crypto_strings();
262 e = setup_engine(bio_err, engine, 0);
267 #ifndef OPENSSL_NO_DSA
272 BIO_printf(bio_err, "generator may not be chosen for DSA parameters\n");
286 if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL)
288 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
291 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
292 app_RAND_load_files(inrand));
294 #ifndef OPENSSL_NO_DSA
299 BIO_printf(bio_err,"Generating DSA parameters, %d bit long prime\n",num);
300 dsa = DSA_generate_parameters(num, NULL, 0, NULL, NULL, dh_cb, bio_err);
303 ERR_print_errors(bio_err);
307 dh = DSA_dup_DH(dsa);
311 ERR_print_errors(bio_err);
318 BIO_printf(bio_err,"Generating DH parameters, %d bit long safe prime, generator %d\n",num,g);
319 BIO_printf(bio_err,"This is going to take a long time\n");
320 dh=DH_generate_parameters(num,g,dh_cb,bio_err);
324 ERR_print_errors(bio_err);
329 app_RAND_write_file(NULL, bio_err);
332 in=BIO_new(BIO_s_file());
335 ERR_print_errors(bio_err);
339 BIO_set_fp(in,stdin,BIO_NOCLOSE);
342 if (BIO_read_filename(in,infile) <= 0)
349 if (informat != FORMAT_ASN1 && informat != FORMAT_PEM)
351 BIO_printf(bio_err,"bad input format specified\n");
355 #ifndef OPENSSL_NO_DSA
360 if (informat == FORMAT_ASN1)
361 dsa=d2i_DSAparams_bio(in,NULL);
362 else /* informat == FORMAT_PEM */
363 dsa=PEM_read_bio_DSAparams(in,NULL,NULL,NULL);
367 BIO_printf(bio_err,"unable to load DSA parameters\n");
368 ERR_print_errors(bio_err);
372 dh = DSA_dup_DH(dsa);
376 ERR_print_errors(bio_err);
383 if (informat == FORMAT_ASN1)
384 dh=d2i_DHparams_bio(in,NULL);
385 else /* informat == FORMAT_PEM */
386 dh=PEM_read_bio_DHparams(in,NULL,NULL,NULL);
390 BIO_printf(bio_err,"unable to load DH parameters\n");
391 ERR_print_errors(bio_err);
399 out=BIO_new(BIO_s_file());
402 ERR_print_errors(bio_err);
407 BIO_set_fp(out,stdout,BIO_NOCLOSE);
408 #ifdef OPENSSL_SYS_VMS
410 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
411 out = BIO_push(tmpbio, out);
417 if (BIO_write_filename(out,outfile) <= 0)
427 DHparams_print(out,dh);
432 if (!DH_check(dh,&i))
434 ERR_print_errors(bio_err);
437 if (i & DH_CHECK_P_NOT_PRIME)
438 printf("p value is not prime\n");
439 if (i & DH_CHECK_P_NOT_SAFE_PRIME)
440 printf("p value is not a safe prime\n");
441 if (i & DH_UNABLE_TO_CHECK_GENERATOR)
442 printf("unable to check the generator value\n");
443 if (i & DH_NOT_SUITABLE_GENERATOR)
444 printf("the g value is not a generator\n");
446 printf("DH parameters appear to be ok.\n");
453 len=BN_num_bytes(dh->p);
454 bits=BN_num_bits(dh->p);
455 data=(unsigned char *)OPENSSL_malloc(len);
458 perror("OPENSSL_malloc");
461 printf("#ifndef HEADER_DH_H\n"
462 "#include <openssl/dh.h>\n"
464 printf("DH *get_dh%d()\n\t{\n",bits);
466 l=BN_bn2bin(dh->p,data);
467 printf("\tstatic unsigned char dh%d_p[]={",bits);
470 if ((i%12) == 0) printf("\n\t\t");
471 printf("0x%02X,",data[i]);
473 printf("\n\t\t};\n");
475 l=BN_bn2bin(dh->g,data);
476 printf("\tstatic unsigned char dh%d_g[]={",bits);
479 if ((i%12) == 0) printf("\n\t\t");
480 printf("0x%02X,",data[i]);
482 printf("\n\t\t};\n");
484 printf("\tDH *dh;\n\n");
485 printf("\tif ((dh=DH_new()) == NULL) return(NULL);\n");
486 printf("\tdh->p=BN_bin2bn(dh%d_p,sizeof(dh%d_p),NULL);\n",
488 printf("\tdh->g=BN_bin2bn(dh%d_g,sizeof(dh%d_g),NULL);\n",
490 printf("\tif ((dh->p == NULL) || (dh->g == NULL))\n");
491 printf("\t\t{ DH_free(dh); return(NULL); }\n");
493 printf("\tdh->length = %d;\n", dh->length);
494 printf("\treturn(dh);\n\t}\n");
501 if (outformat == FORMAT_ASN1)
502 i=i2d_DHparams_bio(out,dh);
503 else if (outformat == FORMAT_PEM)
504 i=PEM_write_bio_DHparams(out,dh);
506 BIO_printf(bio_err,"bad output format specified for outfile\n");
511 BIO_printf(bio_err,"unable to write DH parameters\n");
512 ERR_print_errors(bio_err);
518 if (in != NULL) BIO_free(in);
519 if (out != NULL) BIO_free_all(out);
520 if (dh != NULL) DH_free(dh);
525 /* dh_cb is identical to dsa_cb in apps/dsaparam.c */
526 static void MS_CALLBACK dh_cb(int p, int n, void *arg)
534 BIO_write((BIO *)arg,&c,1);
535 (void)BIO_flush((BIO *)arg);