| /* apps/dhparam.c */ |
| /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
| * All rights reserved. |
| * |
| * This package is an SSL implementation written |
| * by Eric Young (eay@cryptsoft.com). |
| * The implementation was written so as to conform with Netscapes SSL. |
| * |
| * This library is free for commercial and non-commercial use as long as |
| * the following conditions are aheared to. The following conditions |
| * apply to all code found in this distribution, be it the RC4, RSA, |
| * lhash, DES, etc., code; not just the SSL code. The SSL documentation |
| * included with this distribution is covered by the same copyright terms |
| * except that the holder is Tim Hudson (tjh@cryptsoft.com). |
| * |
| * Copyright remains Eric Young's, and as such any Copyright notices in |
| * the code are not to be removed. |
| * If this package is used in a product, Eric Young should be given attribution |
| * as the author of the parts of the library used. |
| * This can be in the form of a textual message at program startup or |
| * in documentation (online or textual) provided with the package. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. All advertising materials mentioning features or use of this software |
| * must display the following acknowledgement: |
| * "This product includes cryptographic software written by |
| * Eric Young (eay@cryptsoft.com)" |
| * The word 'cryptographic' can be left out if the rouines from the library |
| * being used are not cryptographic related :-). |
| * 4. If you include any Windows specific code (or a derivative thereof) from |
| * the apps directory (application code) you must include an acknowledgement: |
| * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
| * |
| * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| * The licence and distribution terms for any publically available version or |
| * derivative of this code cannot be changed. i.e. this code cannot simply be |
| * copied and put under another distribution licence |
| * [including the GNU Public Licence.] |
| */ |
| /* ==================================================================== |
| * Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. All advertising materials mentioning features or use of this |
| * software must display the following acknowledgment: |
| * "This product includes software developed by the OpenSSL Project |
| * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" |
| * |
| * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
| * endorse or promote products derived from this software without |
| * prior written permission. For written permission, please contact |
| * openssl-core@openssl.org. |
| * |
| * 5. Products derived from this software may not be called "OpenSSL" |
| * nor may "OpenSSL" appear in their names without prior written |
| * permission of the OpenSSL Project. |
| * |
| * 6. Redistributions of any form whatsoever must retain the following |
| * acknowledgment: |
| * "This product includes software developed by the OpenSSL Project |
| * for use in the OpenSSL Toolkit (http://www.openssl.org/)" |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
| * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| * OF THE POSSIBILITY OF SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This product includes cryptographic software written by Eric Young |
| * (eay@cryptsoft.com). This product includes software written by Tim |
| * Hudson (tjh@cryptsoft.com). |
| * |
| */ |
| |
| #include <openssl/opensslconf.h> /* for OPENSSL_NO_DH */ |
| #ifndef OPENSSL_NO_DH |
| # include <stdio.h> |
| # include <stdlib.h> |
| # include <time.h> |
| # include <string.h> |
| # include "apps.h" |
| # include <openssl/bio.h> |
| # include <openssl/err.h> |
| # include <openssl/bn.h> |
| # include <openssl/dh.h> |
| # include <openssl/x509.h> |
| # include <openssl/pem.h> |
| |
| # ifndef OPENSSL_NO_DSA |
| # include <openssl/dsa.h> |
| # endif |
| |
| # undef PROG |
| # define PROG dhparam_main |
| |
| # define DEFBITS 2048 |
| |
| /*- |
| * -inform arg - input format - default PEM (DER or PEM) |
| * -outform arg - output format - default PEM |
| * -in arg - input file - default stdin |
| * -out arg - output file - default stdout |
| * -dsaparam - read or generate DSA parameters, convert to DH |
| * -check - check the parameters are ok |
| * -noout |
| * -text |
| * -C |
| */ |
| |
| static int MS_CALLBACK dh_cb(int p, int n, BN_GENCB *cb); |
| |
| int MAIN(int, char **); |
| |
| int MAIN(int argc, char **argv) |
| { |
| DH *dh = NULL; |
| int i, badops = 0, text = 0; |
| # ifndef OPENSSL_NO_DSA |
| int dsaparam = 0; |
| # endif |
| BIO *in = NULL, *out = NULL; |
| int informat, outformat, check = 0, noout = 0, C = 0, ret = 1; |
| char *infile, *outfile, *prog; |
| char *inrand = NULL; |
| # ifndef OPENSSL_NO_ENGINE |
| char *engine = NULL; |
| # endif |
| int num = 0, g = 0; |
| |
| apps_startup(); |
| |
| if (bio_err == NULL) |
| if ((bio_err = BIO_new(BIO_s_file())) != NULL) |
| BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT); |
| |
| if (!load_config(bio_err, NULL)) |
| goto end; |
| |
| infile = NULL; |
| outfile = NULL; |
| informat = FORMAT_PEM; |
| outformat = FORMAT_PEM; |
| |
| prog = argv[0]; |
| argc--; |
| argv++; |
| while (argc >= 1) { |
| if (strcmp(*argv, "-inform") == 0) { |
| if (--argc < 1) |
| goto bad; |
| informat = str2fmt(*(++argv)); |
| } else if (strcmp(*argv, "-outform") == 0) { |
| if (--argc < 1) |
| goto bad; |
| outformat = str2fmt(*(++argv)); |
| } else if (strcmp(*argv, "-in") == 0) { |
| if (--argc < 1) |
| goto bad; |
| infile = *(++argv); |
| } else if (strcmp(*argv, "-out") == 0) { |
| if (--argc < 1) |
| goto bad; |
| outfile = *(++argv); |
| } |
| # ifndef OPENSSL_NO_ENGINE |
| else if (strcmp(*argv, "-engine") == 0) { |
| if (--argc < 1) |
| goto bad; |
| engine = *(++argv); |
| } |
| # endif |
| else if (strcmp(*argv, "-check") == 0) |
| check = 1; |
| else if (strcmp(*argv, "-text") == 0) |
| text = 1; |
| # ifndef OPENSSL_NO_DSA |
| else if (strcmp(*argv, "-dsaparam") == 0) |
| dsaparam = 1; |
| # endif |
| else if (strcmp(*argv, "-C") == 0) |
| C = 1; |
| else if (strcmp(*argv, "-noout") == 0) |
| noout = 1; |
| else if (strcmp(*argv, "-2") == 0) |
| g = 2; |
| else if (strcmp(*argv, "-5") == 0) |
| g = 5; |
| else if (strcmp(*argv, "-rand") == 0) { |
| if (--argc < 1) |
| goto bad; |
| inrand = *(++argv); |
| } else if (((sscanf(*argv, "%d", &num) == 0) || (num <= 0))) |
| goto bad; |
| argv++; |
| argc--; |
| } |
| |
| if (badops) { |
| bad: |
| BIO_printf(bio_err, "%s [options] [numbits]\n", prog); |
| BIO_printf(bio_err, "where options are\n"); |
| BIO_printf(bio_err, " -inform arg input format - one of DER PEM\n"); |
| BIO_printf(bio_err, |
| " -outform arg output format - one of DER PEM\n"); |
| BIO_printf(bio_err, " -in arg input file\n"); |
| BIO_printf(bio_err, " -out arg output file\n"); |
| # ifndef OPENSSL_NO_DSA |
| BIO_printf(bio_err, |
| " -dsaparam read or generate DSA parameters, convert to DH\n"); |
| # endif |
| BIO_printf(bio_err, " -check check the DH parameters\n"); |
| BIO_printf(bio_err, |
| " -text print a text form of the DH parameters\n"); |
| BIO_printf(bio_err, " -C Output C code\n"); |
| BIO_printf(bio_err, |
| " -2 generate parameters using 2 as the generator value\n"); |
| BIO_printf(bio_err, |
| " -5 generate parameters using 5 as the generator value\n"); |
| BIO_printf(bio_err, |
| " numbits number of bits in to generate (default 2048)\n"); |
| # ifndef OPENSSL_NO_ENGINE |
| BIO_printf(bio_err, |
| " -engine e use engine e, possibly a hardware device.\n"); |
| # endif |
| BIO_printf(bio_err, " -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, |
| LIST_SEPARATOR_CHAR); |
| BIO_printf(bio_err, |
| " - load the file (or the files in the directory) into\n"); |
| BIO_printf(bio_err, " the random number generator\n"); |
| BIO_printf(bio_err, " -noout no output\n"); |
| goto end; |
| } |
| |
| ERR_load_crypto_strings(); |
| |
| # ifndef OPENSSL_NO_ENGINE |
| setup_engine(bio_err, engine, 0); |
| # endif |
| |
| if (g && !num) |
| num = DEFBITS; |
| |
| # ifndef OPENSSL_NO_DSA |
| if (dsaparam) { |
| if (g) { |
| BIO_printf(bio_err, |
| "generator may not be chosen for DSA parameters\n"); |
| goto end; |
| } |
| } else |
| # endif |
| { |
| /* DH parameters */ |
| if (num && !g) |
| g = 2; |
| } |
| |
| if (num) { |
| |
| BN_GENCB cb; |
| BN_GENCB_set(&cb, dh_cb, bio_err); |
| if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL) { |
| BIO_printf(bio_err, |
| "warning, not much extra random data, consider using the -rand option\n"); |
| } |
| if (inrand != NULL) |
| BIO_printf(bio_err, "%ld semi-random bytes loaded\n", |
| app_RAND_load_files(inrand)); |
| |
| # ifndef OPENSSL_NO_DSA |
| if (dsaparam) { |
| DSA *dsa = DSA_new(); |
| |
| BIO_printf(bio_err, |
| "Generating DSA parameters, %d bit long prime\n", num); |
| if (!dsa |
| || !DSA_generate_parameters_ex(dsa, num, NULL, 0, NULL, NULL, |
| &cb)) { |
| if (dsa) |
| DSA_free(dsa); |
| ERR_print_errors(bio_err); |
| goto end; |
| } |
| |
| dh = DSA_dup_DH(dsa); |
| DSA_free(dsa); |
| if (dh == NULL) { |
| ERR_print_errors(bio_err); |
| goto end; |
| } |
| } else |
| # endif |
| { |
| dh = DH_new(); |
| BIO_printf(bio_err, |
| "Generating DH parameters, %d bit long safe prime, generator %d\n", |
| num, g); |
| BIO_printf(bio_err, "This is going to take a long time\n"); |
| if (!dh || !DH_generate_parameters_ex(dh, num, g, &cb)) { |
| ERR_print_errors(bio_err); |
| goto end; |
| } |
| } |
| |
| app_RAND_write_file(NULL, bio_err); |
| } else { |
| |
| in = BIO_new(BIO_s_file()); |
| if (in == NULL) { |
| ERR_print_errors(bio_err); |
| goto end; |
| } |
| if (infile == NULL) |
| BIO_set_fp(in, stdin, BIO_NOCLOSE); |
| else { |
| if (BIO_read_filename(in, infile) <= 0) { |
| perror(infile); |
| goto end; |
| } |
| } |
| |
| if (informat != FORMAT_ASN1 && informat != FORMAT_PEM) { |
| BIO_printf(bio_err, "bad input format specified\n"); |
| goto end; |
| } |
| # ifndef OPENSSL_NO_DSA |
| if (dsaparam) { |
| DSA *dsa; |
| |
| if (informat == FORMAT_ASN1) |
| dsa = d2i_DSAparams_bio(in, NULL); |
| else /* informat == FORMAT_PEM */ |
| dsa = PEM_read_bio_DSAparams(in, NULL, NULL, NULL); |
| |
| if (dsa == NULL) { |
| BIO_printf(bio_err, "unable to load DSA parameters\n"); |
| ERR_print_errors(bio_err); |
| goto end; |
| } |
| |
| dh = DSA_dup_DH(dsa); |
| DSA_free(dsa); |
| if (dh == NULL) { |
| ERR_print_errors(bio_err); |
| goto end; |
| } |
| } else |
| # endif |
| { |
| if (informat == FORMAT_ASN1) |
| dh = d2i_DHparams_bio(in, NULL); |
| else /* informat == FORMAT_PEM */ |
| dh = PEM_read_bio_DHparams(in, NULL, NULL, NULL); |
| |
| if (dh == NULL) { |
| BIO_printf(bio_err, "unable to load DH parameters\n"); |
| ERR_print_errors(bio_err); |
| goto end; |
| } |
| } |
| |
| /* dh != NULL */ |
| } |
| |
| out = BIO_new(BIO_s_file()); |
| if (out == NULL) { |
| ERR_print_errors(bio_err); |
| goto end; |
| } |
| if (outfile == NULL) { |
| BIO_set_fp(out, stdout, BIO_NOCLOSE); |
| # ifdef OPENSSL_SYS_VMS |
| { |
| BIO *tmpbio = BIO_new(BIO_f_linebuffer()); |
| out = BIO_push(tmpbio, out); |
| } |
| # endif |
| } else { |
| if (BIO_write_filename(out, outfile) <= 0) { |
| perror(outfile); |
| goto end; |
| } |
| } |
| |
| if (text) { |
| DHparams_print(out, dh); |
| } |
| |
| if (check) { |
| if (!DH_check(dh, &i)) { |
| ERR_print_errors(bio_err); |
| goto end; |
| } |
| if (i & DH_CHECK_P_NOT_PRIME) |
| printf("p value is not prime\n"); |
| if (i & DH_CHECK_P_NOT_SAFE_PRIME) |
| printf("p value is not a safe prime\n"); |
| if (i & DH_UNABLE_TO_CHECK_GENERATOR) |
| printf("unable to check the generator value\n"); |
| if (i & DH_NOT_SUITABLE_GENERATOR) |
| printf("the g value is not a generator\n"); |
| if (i == 0) |
| printf("DH parameters appear to be ok.\n"); |
| } |
| if (C) { |
| unsigned char *data; |
| int len, l, bits; |
| |
| len = BN_num_bytes(dh->p); |
| bits = BN_num_bits(dh->p); |
| data = (unsigned char *)OPENSSL_malloc(len); |
| if (data == NULL) { |
| perror("OPENSSL_malloc"); |
| goto end; |
| } |
| printf("#ifndef HEADER_DH_H\n" |
| "#include <openssl/dh.h>\n" "#endif\n"); |
| printf("DH *get_dh%d()\n\t{\n", bits); |
| |
| l = BN_bn2bin(dh->p, data); |
| printf("\tstatic unsigned char dh%d_p[]={", bits); |
| for (i = 0; i < l; i++) { |
| if ((i % 12) == 0) |
| printf("\n\t\t"); |
| printf("0x%02X,", data[i]); |
| } |
| printf("\n\t\t};\n"); |
| |
| l = BN_bn2bin(dh->g, data); |
| printf("\tstatic unsigned char dh%d_g[]={", bits); |
| for (i = 0; i < l; i++) { |
| if ((i % 12) == 0) |
| printf("\n\t\t"); |
| printf("0x%02X,", data[i]); |
| } |
| printf("\n\t\t};\n"); |
| |
| printf("\tDH *dh;\n\n"); |
| printf("\tif ((dh=DH_new()) == NULL) return(NULL);\n"); |
| printf("\tdh->p=BN_bin2bn(dh%d_p,sizeof(dh%d_p),NULL);\n", |
| bits, bits); |
| printf("\tdh->g=BN_bin2bn(dh%d_g,sizeof(dh%d_g),NULL);\n", |
| bits, bits); |
| printf("\tif ((dh->p == NULL) || (dh->g == NULL))\n"); |
| printf("\t\t{ DH_free(dh); return(NULL); }\n"); |
| if (dh->length) |
| printf("\tdh->length = %ld;\n", dh->length); |
| printf("\treturn(dh);\n\t}\n"); |
| OPENSSL_free(data); |
| } |
| |
| if (!noout) { |
| if (outformat == FORMAT_ASN1) |
| i = i2d_DHparams_bio(out, dh); |
| else if (outformat == FORMAT_PEM) |
| i = PEM_write_bio_DHparams(out, dh); |
| else { |
| BIO_printf(bio_err, "bad output format specified for outfile\n"); |
| goto end; |
| } |
| if (!i) { |
| BIO_printf(bio_err, "unable to write DH parameters\n"); |
| ERR_print_errors(bio_err); |
| goto end; |
| } |
| } |
| ret = 0; |
| end: |
| if (in != NULL) |
| BIO_free(in); |
| if (out != NULL) |
| BIO_free_all(out); |
| if (dh != NULL) |
| DH_free(dh); |
| apps_shutdown(); |
| OPENSSL_EXIT(ret); |
| } |
| |
| /* dh_cb is identical to dsa_cb in apps/dsaparam.c */ |
| static int MS_CALLBACK dh_cb(int p, int n, BN_GENCB *cb) |
| { |
| char c = '*'; |
| |
| if (p == 0) |
| c = '.'; |
| if (p == 1) |
| c = '+'; |
| if (p == 2) |
| c = '*'; |
| if (p == 3) |
| c = '\n'; |
| BIO_write(cb->arg, &c, 1); |
| (void)BIO_flush(cb->arg); |
| # ifdef LINT |
| p = n; |
| # endif |
| return 1; |
| } |
| |
| #else /* !OPENSSL_NO_DH */ |
| |
| # if PEDANTIC |
| static void *dummy = &dummy; |
| # endif |
| |
| #endif |
