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authorWilliam Joye <wjoye@cfa.harvard.edu>2017-05-02 16:06:33 (GMT)
committerWilliam Joye <wjoye@cfa.harvard.edu>2017-05-02 16:06:33 (GMT)
commit335ca9eb0d2337314cbbec5eb19f9aeea0eaaca7 (patch)
tree0a0e8d65ee114cb89f58c3159488dd5523123309 /openssl/apps/dhparam.c
parenta90d8737b83a4a5bb2bf91a9bdf48a3dad4b51fa (diff)
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diff --git a/openssl/apps/dhparam.c b/openssl/apps/dhparam.c
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+/* 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;
+ char *engine = NULL;
+ ENGINE *e = NULL;
+ 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();
+
+ e = setup_engine(bio_err, engine, 0);
+
+ 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) {
+ if (dh->q)
+ i = PEM_write_bio_DHxparams(out, dh);
+ else
+ 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);
+ release_engine(e);
+ 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