Annotation of src/usr.bin/openssl/gendh.c, Revision 1.1
1.1 ! jsing 1: /* $OpenBSD: gendh.c,v 1.28 2014/07/14 00:35:10 deraadt Exp $ */
! 2: /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
! 3: * All rights reserved.
! 4: *
! 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.
! 8: *
! 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).
! 15: *
! 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.
! 22: *
! 23: * Redistribution and use in source and binary forms, with or without
! 24: * modification, are permitted provided that the following conditions
! 25: * are met:
! 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)"
! 40: *
! 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
! 51: * SUCH DAMAGE.
! 52: *
! 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.]
! 57: */
! 58:
! 59: #include <openssl/opensslconf.h>
! 60:
! 61: /* Until the key-gen callbacks are modified to use newer prototypes, we allow
! 62: * deprecated functions for openssl-internal code */
! 63: #ifdef OPENSSL_NO_DEPRECATED
! 64: #undef OPENSSL_NO_DEPRECATED
! 65: #endif
! 66:
! 67: #ifndef OPENSSL_NO_DH
! 68:
! 69: #include <sys/types.h>
! 70: #include <sys/stat.h>
! 71:
! 72: #include <stdio.h>
! 73: #include <string.h>
! 74:
! 75: #include "apps.h"
! 76:
! 77: #include <openssl/bio.h>
! 78: #include <openssl/bn.h>
! 79: #include <openssl/dh.h>
! 80: #include <openssl/err.h>
! 81: #include <openssl/pem.h>
! 82: #include <openssl/rand.h>
! 83: #include <openssl/x509.h>
! 84:
! 85: #define DEFBITS 512
! 86:
! 87: static int dh_cb(int p, int n, BN_GENCB * cb);
! 88:
! 89: int gendh_main(int, char **);
! 90:
! 91: int
! 92: gendh_main(int argc, char **argv)
! 93: {
! 94: BN_GENCB cb;
! 95: DH *dh = NULL;
! 96: int ret = 1, num = DEFBITS;
! 97: int g = 2;
! 98: char *outfile = NULL;
! 99: #ifndef OPENSSL_NO_ENGINE
! 100: char *engine = NULL;
! 101: #endif
! 102: BIO *out = NULL;
! 103:
! 104: BN_GENCB_set(&cb, dh_cb, bio_err);
! 105:
! 106: argv++;
! 107: argc--;
! 108: for (;;) {
! 109: if (argc <= 0)
! 110: break;
! 111: if (strcmp(*argv, "-out") == 0) {
! 112: if (--argc < 1)
! 113: goto bad;
! 114: outfile = *(++argv);
! 115: } else if (strcmp(*argv, "-2") == 0)
! 116: g = 2;
! 117: /*
! 118: * else if (strcmp(*argv,"-3") == 0) g=3;
! 119: */
! 120: else if (strcmp(*argv, "-5") == 0)
! 121: g = 5;
! 122: #ifndef OPENSSL_NO_ENGINE
! 123: else if (strcmp(*argv, "-engine") == 0) {
! 124: if (--argc < 1)
! 125: goto bad;
! 126: engine = *(++argv);
! 127: }
! 128: #endif
! 129: else
! 130: break;
! 131: argv++;
! 132: argc--;
! 133: }
! 134: if ((argc >= 1) && ((sscanf(*argv, "%d", &num) == 0) || (num < 0))) {
! 135: bad:
! 136: BIO_printf(bio_err, "usage: gendh [args] [numbits]\n");
! 137: BIO_printf(bio_err, " -out file - output the key to 'file\n");
! 138: BIO_printf(bio_err, " -2 - use 2 as the generator value\n");
! 139: /*
! 140: * BIO_printf(bio_err," -3 - use 3 as the generator
! 141: * value\n");
! 142: */
! 143: BIO_printf(bio_err, " -5 - use 5 as the generator value\n");
! 144: #ifndef OPENSSL_NO_ENGINE
! 145: BIO_printf(bio_err, " -engine e - use engine e, possibly a hardware device.\n");
! 146: #endif
! 147: goto end;
! 148: }
! 149: #ifndef OPENSSL_NO_ENGINE
! 150: setup_engine(bio_err, engine, 0);
! 151: #endif
! 152:
! 153: out = BIO_new(BIO_s_file());
! 154: if (out == NULL) {
! 155: ERR_print_errors(bio_err);
! 156: goto end;
! 157: }
! 158: if (outfile == NULL) {
! 159: BIO_set_fp(out, stdout, BIO_NOCLOSE);
! 160: } else {
! 161: if (BIO_write_filename(out, outfile) <= 0) {
! 162: perror(outfile);
! 163: goto end;
! 164: }
! 165: }
! 166:
! 167: BIO_printf(bio_err, "Generating DH parameters, %d bit long safe prime, generator %d\n", num, g);
! 168: BIO_printf(bio_err, "This is going to take a long time\n");
! 169:
! 170: if (((dh = DH_new()) == NULL) || !DH_generate_parameters_ex(dh, num, g, &cb))
! 171: goto end;
! 172:
! 173: if (!PEM_write_bio_DHparams(out, dh))
! 174: goto end;
! 175: ret = 0;
! 176: end:
! 177: if (ret != 0)
! 178: ERR_print_errors(bio_err);
! 179: if (out != NULL)
! 180: BIO_free_all(out);
! 181: if (dh != NULL)
! 182: DH_free(dh);
! 183:
! 184: return (ret);
! 185: }
! 186:
! 187: static int
! 188: dh_cb(int p, int n, BN_GENCB * cb)
! 189: {
! 190: char c = '*';
! 191:
! 192: if (p == 0)
! 193: c = '.';
! 194: if (p == 1)
! 195: c = '+';
! 196: if (p == 2)
! 197: c = '*';
! 198: if (p == 3)
! 199: c = '\n';
! 200: BIO_write(cb->arg, &c, 1);
! 201: (void) BIO_flush(cb->arg);
! 202: return 1;
! 203: }
! 204: #endif
![[BACK]](/icons/back.gif){kind=icon}
Return to gendh.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / openssl