diff options
Diffstat (limited to 'usr.bin/openssl/dhparam.c')
| -rw-r--r-- | usr.bin/openssl/dhparam.c | 472 |
1 files changed, 472 insertions, 0 deletions
diff --git a/usr.bin/openssl/dhparam.c b/usr.bin/openssl/dhparam.c new file mode 100644 index 00000000000..0022f726701 --- /dev/null +++ b/usr.bin/openssl/dhparam.c @@ -0,0 +1,472 @@ +/* $OpenBSD: dhparam.c,v 1.1 2014/08/26 17:47:24 jsing Exp $ */ +/* 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 <string.h> +#include <time.h> + +#include "apps.h" + +#include <openssl/bio.h> +#include <openssl/bn.h> +#include <openssl/err.h> +#include <openssl/dh.h> +#include <openssl/pem.h> +#include <openssl/x509.h> + +#include <openssl/dsa.h> + +#define DEFBITS 512 + +/* -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 dh_cb(int p, int n, BN_GENCB * cb); + +int dhparam_main(int, char **); + +int +dhparam_main(int argc, char **argv) +{ + DH *dh = NULL; + int i, badops = 0, text = 0; + int dsaparam = 0; + BIO *in = NULL, *out = NULL; + int informat, outformat, check = 0, noout = 0, C = 0, ret = 1; + char *infile, *outfile, *prog; +#ifndef OPENSSL_NO_ENGINE + char *engine = NULL; +#endif + int num = 0, g = 0; + + 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; + else if (strcmp(*argv, "-dsaparam") == 0) + dsaparam = 1; + 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 (((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"); + BIO_printf(bio_err, " -dsaparam read or generate DSA parameters, convert to DH\n"); + 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 512)\n"); +#ifndef OPENSSL_NO_ENGINE + BIO_printf(bio_err, " -engine e use engine e, possibly a hardware device.\n"); +#endif + 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; + + if (dsaparam) { + if (g) { + BIO_printf(bio_err, "generator may not be chosen for DSA parameters\n"); + goto end; + } + } else + { + /* DH parameters */ + if (num && !g) + g = 2; + } + + if (num) { + + BN_GENCB cb; + BN_GENCB_set(&cb, dh_cb, bio_err); + 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 + { + 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; + } + } + } 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; + } + 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 + { + 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); + } 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 = malloc(len); + if (data == NULL) { + perror("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"); + 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: + BIO_free(in); + if (out != NULL) + BIO_free_all(out); + if (dh != NULL) + DH_free(dh); + + return (ret); +} + +/* dh_cb is identical to dsa_cb in apps/dsaparam.c */ +static int +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); + return 1; +} + +#endif |