Annotation of src/usr.bin/openssl/dh.c, Revision 1.1
1.1 ! jsing 1: /* $OpenBSD: dh.c,v 1.26 2014/07/25 06:05:31 doug 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> /* for OPENSSL_NO_DH */
! 60:
! 61: #ifndef OPENSSL_NO_DH
! 62:
! 63: #include <stdio.h>
! 64: #include <stdlib.h>
! 65: #include <string.h>
! 66: #include <time.h>
! 67:
! 68: #include "apps.h"
! 69:
! 70: #include <openssl/bio.h>
! 71: #include <openssl/bn.h>
! 72: #include <openssl/err.h>
! 73: #include <openssl/dh.h>
! 74: #include <openssl/pem.h>
! 75: #include <openssl/x509.h>
! 76:
! 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
! 82: * -noout
! 83: * -text
! 84: * -C
! 85: */
! 86:
! 87: int dh_main(int, char **);
! 88:
! 89: int
! 90: dh_main(int argc, char **argv)
! 91: {
! 92: DH *dh = NULL;
! 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;
! 97: #ifndef OPENSSL_NO_ENGINE
! 98: char *engine;
! 99: #endif
! 100:
! 101: #ifndef OPENSSL_NO_ENGINE
! 102: engine = NULL;
! 103: #endif
! 104: infile = NULL;
! 105: outfile = NULL;
! 106: informat = FORMAT_PEM;
! 107: outformat = FORMAT_PEM;
! 108:
! 109: prog = argv[0];
! 110: argc--;
! 111: argv++;
! 112: while (argc >= 1) {
! 113: if (strcmp(*argv, "-inform") == 0) {
! 114: if (--argc < 1)
! 115: goto bad;
! 116: informat = str2fmt(*(++argv));
! 117: } else if (strcmp(*argv, "-outform") == 0) {
! 118: if (--argc < 1)
! 119: goto bad;
! 120: outformat = str2fmt(*(++argv));
! 121: } else if (strcmp(*argv, "-in") == 0) {
! 122: if (--argc < 1)
! 123: goto bad;
! 124: infile = *(++argv);
! 125: } else if (strcmp(*argv, "-out") == 0) {
! 126: if (--argc < 1)
! 127: goto bad;
! 128: outfile = *(++argv);
! 129: }
! 130: #ifndef OPENSSL_NO_ENGINE
! 131: else if (strcmp(*argv, "-engine") == 0) {
! 132: if (--argc < 1)
! 133: goto bad;
! 134: engine = *(++argv);
! 135: }
! 136: #endif
! 137: else if (strcmp(*argv, "-check") == 0)
! 138: check = 1;
! 139: else if (strcmp(*argv, "-text") == 0)
! 140: text = 1;
! 141: else if (strcmp(*argv, "-C") == 0)
! 142: C = 1;
! 143: else if (strcmp(*argv, "-noout") == 0)
! 144: noout = 1;
! 145: else {
! 146: BIO_printf(bio_err, "unknown option %s\n", *argv);
! 147: badops = 1;
! 148: break;
! 149: }
! 150: argc--;
! 151: argv++;
! 152: }
! 153:
! 154: if (badops) {
! 155: bad:
! 156: BIO_printf(bio_err, "%s [options] <infile >outfile\n", prog);
! 157: BIO_printf(bio_err, "where options are\n");
! 158: BIO_printf(bio_err, " -inform arg input format - one of DER PEM\n");
! 159: BIO_printf(bio_err, " -outform arg output format - one of DER PEM\n");
! 160: BIO_printf(bio_err, " -in arg input file\n");
! 161: BIO_printf(bio_err, " -out arg output file\n");
! 162: BIO_printf(bio_err, " -check check the DH parameters\n");
! 163: BIO_printf(bio_err, " -text print a text form of the DH parameters\n");
! 164: BIO_printf(bio_err, " -C Output C code\n");
! 165: BIO_printf(bio_err, " -noout no output\n");
! 166: #ifndef OPENSSL_NO_ENGINE
! 167: BIO_printf(bio_err, " -engine e use engine e, possibly a hardware device.\n");
! 168: #endif
! 169: goto end;
! 170: }
! 171: ERR_load_crypto_strings();
! 172:
! 173: #ifndef OPENSSL_NO_ENGINE
! 174: setup_engine(bio_err, engine, 0);
! 175: #endif
! 176:
! 177: in = BIO_new(BIO_s_file());
! 178: out = BIO_new(BIO_s_file());
! 179: if ((in == NULL) || (out == NULL)) {
! 180: ERR_print_errors(bio_err);
! 181: goto end;
! 182: }
! 183: if (infile == NULL)
! 184: BIO_set_fp(in, stdin, BIO_NOCLOSE);
! 185: else {
! 186: if (BIO_read_filename(in, infile) <= 0) {
! 187: perror(infile);
! 188: goto end;
! 189: }
! 190: }
! 191: if (outfile == NULL) {
! 192: BIO_set_fp(out, stdout, BIO_NOCLOSE);
! 193: } else {
! 194: if (BIO_write_filename(out, outfile) <= 0) {
! 195: perror(outfile);
! 196: goto end;
! 197: }
! 198: }
! 199:
! 200: if (informat == FORMAT_ASN1)
! 201: dh = d2i_DHparams_bio(in, NULL);
! 202: else if (informat == FORMAT_PEM)
! 203: dh = PEM_read_bio_DHparams(in, NULL, NULL, NULL);
! 204: else {
! 205: BIO_printf(bio_err, "bad input format specified\n");
! 206: goto end;
! 207: }
! 208: if (dh == NULL) {
! 209: BIO_printf(bio_err, "unable to load DH parameters\n");
! 210: ERR_print_errors(bio_err);
! 211: goto end;
! 212: }
! 213: if (text) {
! 214: DHparams_print(out, dh);
! 215: #ifdef undef
! 216: printf("p=");
! 217: BN_print(stdout, dh->p);
! 218: printf("\ng=");
! 219: BN_print(stdout, dh->g);
! 220: printf("\n");
! 221: if (dh->length != 0)
! 222: printf("recommended private length=%ld\n", dh->length);
! 223: #endif
! 224: }
! 225: if (check) {
! 226: if (!DH_check(dh, &i)) {
! 227: ERR_print_errors(bio_err);
! 228: goto end;
! 229: }
! 230: if (i & DH_CHECK_P_NOT_PRIME)
! 231: printf("p value is not prime\n");
! 232: if (i & DH_CHECK_P_NOT_SAFE_PRIME)
! 233: printf("p value is not a safe prime\n");
! 234: if (i & DH_UNABLE_TO_CHECK_GENERATOR)
! 235: printf("unable to check the generator value\n");
! 236: if (i & DH_NOT_SUITABLE_GENERATOR)
! 237: printf("the g value is not a generator\n");
! 238: if (i == 0)
! 239: printf("DH parameters appear to be ok.\n");
! 240: }
! 241: if (C) {
! 242: unsigned char *data;
! 243: int len, l, bits;
! 244:
! 245: len = BN_num_bytes(dh->p);
! 246: bits = BN_num_bits(dh->p);
! 247: data = malloc(len);
! 248: if (data == NULL) {
! 249: perror("malloc");
! 250: goto end;
! 251: }
! 252: l = BN_bn2bin(dh->p, data);
! 253: printf("static unsigned char dh%d_p[] = {", bits);
! 254: for (i = 0; i < l; i++) {
! 255: if ((i % 12) == 0)
! 256: printf("\n\t");
! 257: printf("0x%02X, ", data[i]);
! 258: }
! 259: printf("\n\t};\n");
! 260:
! 261: l = BN_bn2bin(dh->g, data);
! 262: printf("static unsigned char dh%d_g[] = {", bits);
! 263: for (i = 0; i < l; i++) {
! 264: if ((i % 12) == 0)
! 265: printf("\n\t");
! 266: printf("0x%02X, ", data[i]);
! 267: }
! 268: printf("\n\t};\n\n");
! 269:
! 270: printf("DH *get_dh%d()\n\t{\n", bits);
! 271: printf("\tDH *dh;\n\n");
! 272: printf("\tif ((dh = DH_new()) == NULL) return(NULL);\n");
! 273: printf("\tdh->p = BN_bin2bn(dh%d_p, sizeof(dh%d_p), NULL);\n",
! 274: bits, bits);
! 275: printf("\tdh->g = BN_bin2bn(dh%d_g, sizeof(dh%d_g), NULL);\n",
! 276: bits, bits);
! 277: printf("\tif ((dh->p == NULL) || (dh->g == NULL))\n");
! 278: printf("\t\treturn(NULL);\n");
! 279: printf("\treturn(dh);\n\t}\n");
! 280: free(data);
! 281: }
! 282: if (!noout) {
! 283: if (outformat == FORMAT_ASN1)
! 284: i = i2d_DHparams_bio(out, dh);
! 285: else if (outformat == FORMAT_PEM)
! 286: i = PEM_write_bio_DHparams(out, dh);
! 287: else {
! 288: BIO_printf(bio_err, "bad output format specified for outfile\n");
! 289: goto end;
! 290: }
! 291: if (!i) {
! 292: BIO_printf(bio_err, "unable to write DH parameters\n");
! 293: ERR_print_errors(bio_err);
! 294: goto end;
! 295: }
! 296: }
! 297: ret = 0;
! 298:
! 299: end:
! 300: BIO_free(in);
! 301: if (out != NULL)
! 302: BIO_free_all(out);
! 303: if (dh != NULL)
! 304: DH_free(dh);
! 305:
! 306: return (ret);
! 307: }
! 308: #endif
![[BACK]](/icons/back.gif){kind=icon}
Return to dh.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / openssl