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).
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>
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)
152 int i,badops=0,text=0;
156 BIO *in=NULL,*out=NULL;
157 int informat,outformat,check=0,noout=0,C=0,ret=1;
158 char *infile,*outfile,*prog;
165 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
166 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
171 outformat=FORMAT_PEM;
178 if (strcmp(*argv,"-inform") == 0)
180 if (--argc < 1) goto bad;
181 informat=str2fmt(*(++argv));
183 else if (strcmp(*argv,"-outform") == 0)
185 if (--argc < 1) goto bad;
186 outformat=str2fmt(*(++argv));
188 else if (strcmp(*argv,"-in") == 0)
190 if (--argc < 1) goto bad;
193 else if (strcmp(*argv,"-out") == 0)
195 if (--argc < 1) goto bad;
198 else if (strcmp(*argv,"-check") == 0)
200 else if (strcmp(*argv,"-text") == 0)
203 else if (strcmp(*argv,"-dsaparam") == 0)
206 else if (strcmp(*argv,"-C") == 0)
208 else if (strcmp(*argv,"-noout") == 0)
210 else if (strcmp(*argv,"-2") == 0)
212 else if (strcmp(*argv,"-5") == 0)
214 else if (strcmp(*argv,"-rand") == 0)
216 if (--argc < 1) goto bad;
219 else if (((sscanf(*argv,"%d",&num) == 0) || (num <= 0)))
228 BIO_printf(bio_err,"%s [options] [numbits]\n",prog);
229 BIO_printf(bio_err,"where options are\n");
230 BIO_printf(bio_err," -inform arg input format - one of DER PEM\n");
231 BIO_printf(bio_err," -outform arg output format - one of DER PEM\n");
232 BIO_printf(bio_err," -in arg input file\n");
233 BIO_printf(bio_err," -out arg output file\n");
235 BIO_printf(bio_err," -dsaparam read or generate DSA parameters, convert to DH\n");
237 BIO_printf(bio_err," -check check the DH parameters\n");
238 BIO_printf(bio_err," -text print a text form of the DH parameters\n");
239 BIO_printf(bio_err," -C Output C code\n");
240 BIO_printf(bio_err," -2 generate parameters using 2 as the generator value\n");
241 BIO_printf(bio_err," -5 generate parameters using 5 as the generator value\n");
242 BIO_printf(bio_err," numbits number of bits in to generate (default 512)\n");
243 BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
244 BIO_printf(bio_err," - load the file (or the files in the directory) into\n");
245 BIO_printf(bio_err," the random number generator\n");
246 BIO_printf(bio_err," -noout no output\n");
250 ERR_load_crypto_strings();
260 BIO_printf(bio_err, "generator may not be chosen for DSA parameters\n");
274 if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL)
276 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
279 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
280 app_RAND_load_files(inrand));
287 BIO_printf(bio_err,"Generating DSA parameters, %d bit long prime\n",num);
288 dsa = DSA_generate_parameters(num, NULL, 0, NULL, NULL, dh_cb, bio_err);
291 ERR_print_errors(bio_err);
295 dh = DSA_dup_DH(dsa);
299 ERR_print_errors(bio_err);
306 BIO_printf(bio_err,"Generating DH parameters, %d bit long safe prime, generator %d\n",num,g);
307 BIO_printf(bio_err,"This is going to take a long time\n");
308 dh=DH_generate_parameters(num,g,dh_cb,bio_err);
312 ERR_print_errors(bio_err);
317 app_RAND_write_file(NULL, bio_err);
320 in=BIO_new(BIO_s_file());
323 ERR_print_errors(bio_err);
327 BIO_set_fp(in,stdin,BIO_NOCLOSE);
330 if (BIO_read_filename(in,infile) <= 0)
337 if (informat != FORMAT_ASN1 && informat != FORMAT_PEM)
339 BIO_printf(bio_err,"bad input format specified\n");
348 if (informat == FORMAT_ASN1)
349 dsa=d2i_DSAparams_bio(in,NULL);
350 else /* informat == FORMAT_PEM */
351 dsa=PEM_read_bio_DSAparams(in,NULL,NULL,NULL);
355 BIO_printf(bio_err,"unable to load DSA parameters\n");
356 ERR_print_errors(bio_err);
360 dh = DSA_dup_DH(dsa);
364 ERR_print_errors(bio_err);
371 if (informat == FORMAT_ASN1)
372 dh=d2i_DHparams_bio(in,NULL);
373 else /* informat == FORMAT_PEM */
374 dh=PEM_read_bio_DHparams(in,NULL,NULL,NULL);
378 BIO_printf(bio_err,"unable to load DH parameters\n");
379 ERR_print_errors(bio_err);
387 out=BIO_new(BIO_s_file());
390 ERR_print_errors(bio_err);
395 BIO_set_fp(out,stdout,BIO_NOCLOSE);
398 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
399 out = BIO_push(tmpbio, out);
405 if (BIO_write_filename(out,outfile) <= 0)
415 DHparams_print(out,dh);
420 if (!DH_check(dh,&i))
422 ERR_print_errors(bio_err);
425 if (i & DH_CHECK_P_NOT_PRIME)
426 printf("p value is not prime\n");
427 if (i & DH_CHECK_P_NOT_SAFE_PRIME)
428 printf("p value is not a safe prime\n");
429 if (i & DH_UNABLE_TO_CHECK_GENERATOR)
430 printf("unable to check the generator value\n");
431 if (i & DH_NOT_SUITABLE_GENERATOR)
432 printf("the g value is not a generator\n");
434 printf("DH parameters appear to be ok.\n");
441 len=BN_num_bytes(dh->p);
442 bits=BN_num_bits(dh->p);
443 data=(unsigned char *)OPENSSL_malloc(len);
446 perror("OPENSSL_malloc");
449 printf("#ifndef HEADER_DH_H\n"
450 "#include <openssl/dh.h>\n"
452 printf("DH *get_dh%d()\n\t{\n",bits);
454 l=BN_bn2bin(dh->p,data);
455 printf("\tstatic unsigned char dh%d_p[]={",bits);
458 if ((i%12) == 0) printf("\n\t\t");
459 printf("0x%02X,",data[i]);
461 printf("\n\t\t};\n");
463 l=BN_bn2bin(dh->g,data);
464 printf("\tstatic unsigned char dh%d_g[]={",bits);
467 if ((i%12) == 0) printf("\n\t\t");
468 printf("0x%02X,",data[i]);
470 printf("\n\t\t};\n");
472 printf("\tDH *dh;\n\n");
473 printf("\tif ((dh=DH_new()) == NULL) return(NULL);\n");
474 printf("\tdh->p=BN_bin2bn(dh%d_p,sizeof(dh%d_p),NULL);\n",
476 printf("\tdh->g=BN_bin2bn(dh%d_g,sizeof(dh%d_g),NULL);\n",
478 printf("\tif ((dh->p == NULL) || (dh->g == NULL))\n");
479 printf("\t\t{ DH_free(dh); return(NULL); }\n");
481 printf("\tdh->length = %d;\n", dh->length);
482 printf("\treturn(dh);\n\t}\n");
489 if (outformat == FORMAT_ASN1)
490 i=i2d_DHparams_bio(out,dh);
491 else if (outformat == FORMAT_PEM)
492 i=PEM_write_bio_DHparams(out,dh);
494 BIO_printf(bio_err,"bad output format specified for outfile\n");
499 BIO_printf(bio_err,"unable to write DH parameters\n");
500 ERR_print_errors(bio_err);
506 if (in != NULL) BIO_free(in);
507 if (out != NULL) BIO_free_all(out);
508 if (dh != NULL) DH_free(dh);
512 /* dh_cb is identical to dsa_cb in apps/dsaparam.c */
513 static void MS_CALLBACK dh_cb(int p, int n, void *arg)
521 BIO_write((BIO *)arg,&c,1);
522 (void)BIO_flush((BIO *)arg);