-/* 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).
+/*
+ * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
*
+ * Licensed under the Apache License 2.0 (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
*/
-#ifndef OPENSSL_NO_DH
+#include <openssl/opensslconf.h>
+
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <string.h>
#include "apps.h"
+#include "progs.h"
#include <openssl/bio.h>
#include <openssl/err.h>
#include <openssl/bn.h>
+#include <openssl/dsa.h>
#include <openssl/dh.h>
#include <openssl/x509.h>
#include <openssl/pem.h>
-#include <openssl/engine.h>
-
-#ifndef OPENSSL_NO_DSA
-#include <openssl/dsa.h>
+#include <openssl/core_names.h>
+#include <openssl/core_dispatch.h>
+#include <openssl/param_build.h>
+#include <openssl/encoder.h>
+#include <openssl/decoder.h>
+
+#define DEFBITS 2048
+
+static EVP_PKEY *dsa_to_dh(EVP_PKEY *dh);
+
+typedef enum OPTION_choice {
+ OPT_COMMON,
+ OPT_INFORM, OPT_OUTFORM, OPT_IN, OPT_OUT,
+ OPT_ENGINE, OPT_CHECK, OPT_TEXT, OPT_NOOUT,
+ OPT_DSAPARAM, OPT_2, OPT_3, OPT_5,
+ OPT_R_ENUM, OPT_PROV_ENUM
+} OPTION_CHOICE;
+
+const OPTIONS dhparam_options[] = {
+ {OPT_HELP_STR, 1, '-', "Usage: %s [options] [numbits]\n"},
+
+ OPT_SECTION("General"),
+ {"help", OPT_HELP, '-', "Display this summary"},
+ {"check", OPT_CHECK, '-', "Check the DH parameters"},
+#if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_DEPRECATED_3_0)
+ {"dsaparam", OPT_DSAPARAM, '-',
+ "Read or generate DSA parameters, convert to DH"},
+#endif
+#ifndef OPENSSL_NO_ENGINE
+ {"engine", OPT_ENGINE, 's', "Use engine e, possibly a hardware device"},
#endif
-#undef PROG
-#define PROG dhparam_main
-
-#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
+ OPT_SECTION("Input"),
+ {"in", OPT_IN, '<', "Input file"},
+ {"inform", OPT_INFORM, 'F', "Input format, DER or PEM"},
+
+ OPT_SECTION("Output"),
+ {"out", OPT_OUT, '>', "Output file"},
+ {"outform", OPT_OUTFORM, 'F', "Output format, DER or PEM"},
+ {"text", OPT_TEXT, '-', "Print a text form of the DH parameters"},
+ {"noout", OPT_NOOUT, '-', "Don't output any DH parameters"},
+ {"2", OPT_2, '-', "Generate parameters using 2 as the generator value"},
+ {"3", OPT_3, '-', "Generate parameters using 3 as the generator value"},
+ {"5", OPT_5, '-', "Generate parameters using 5 as the generator value"},
+
+ OPT_R_OPTIONS,
+ OPT_PROV_OPTIONS,
+
+ OPT_PARAMETERS(),
+ {"numbits", 0, 0, "Number of bits if generating parameters (optional)"},
+ {NULL}
+};
+
+int dhparam_main(int argc, char **argv)
+{
+ BIO *in = NULL, *out = NULL;
+ EVP_PKEY *pkey = NULL, *tmppkey = NULL;
+ EVP_PKEY_CTX *ctx = NULL;
+ char *infile = NULL, *outfile = NULL, *prog;
+ ENGINE *e = NULL;
+ int dsaparam = 0;
+ int text = 0, ret = 1, num = 0, g = 0;
+ int informat = FORMAT_PEM, outformat = FORMAT_PEM, check = 0, noout = 0;
+ OPTION_CHOICE o;
+
+ prog = opt_init(argc, argv, dhparam_options);
+ while ((o = opt_next()) != OPT_EOF) {
+ switch (o) {
+ case OPT_EOF:
+ case OPT_ERR:
+ opthelp:
+ BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
+ goto end;
+ case OPT_HELP:
+ opt_help(dhparam_options);
+ ret = 0;
+ goto end;
+ case OPT_INFORM:
+ if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
+ goto opthelp;
+ break;
+ case OPT_OUTFORM:
+ if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
+ goto opthelp;
+ break;
+ case OPT_IN:
+ infile = opt_arg();
+ break;
+ case OPT_OUT:
+ outfile = opt_arg();
+ break;
+ case OPT_ENGINE:
+ e = setup_engine(opt_arg(), 0);
+ break;
+ case OPT_CHECK:
+ check = 1;
+ break;
+ case OPT_TEXT:
+ text = 1;
+ break;
+ case OPT_DSAPARAM:
+ dsaparam = 1;
+ break;
+ case OPT_2:
+ g = 2;
+ break;
+ case OPT_3:
+ g = 3;
+ break;
+ case OPT_5:
+ g = 5;
+ break;
+ case OPT_NOOUT:
+ noout = 1;
+ break;
+ case OPT_R_CASES:
+ if (!opt_rand(o))
+ goto end;
+ break;
+ case OPT_PROV_CASES:
+ if (!opt_provider(o))
+ goto end;
+ break;
+ }
+ }
+
+ /* One optional argument, bitsize to generate. */
+ argc = opt_num_rest();
+ argv = opt_rest();
+ if (argc == 1) {
+ if (!opt_int(argv[0], &num) || num <= 0)
+ goto opthelp;
+ } else if (!opt_check_rest_arg(NULL)) {
+ goto opthelp;
+ }
+ if (!app_RAND_load())
+ goto end;
+
+ if (g && !num)
+ num = DEFBITS;
+
+ if (dsaparam && g) {
+ BIO_printf(bio_err,
+ "Error, generator may not be chosen for DSA parameters\n");
+ goto end;
+ }
+
+ out = bio_open_default(outfile, 'w', outformat);
+ if (out == NULL)
+ goto end;
+
+ /* DH parameters */
+ if (num && !g)
+ g = 2;
+
+ if (num) {
+ const char *alg = dsaparam ? "DSA" : "DH";
+
+ ctx = EVP_PKEY_CTX_new_from_name(NULL, alg, NULL);
+ if (ctx == NULL) {
+ BIO_printf(bio_err,
+ "Error, %s param generation context allocation failed\n",
+ alg);
+ goto end;
+ }
+ EVP_PKEY_CTX_set_cb(ctx, progress_cb);
+ EVP_PKEY_CTX_set_app_data(ctx, bio_err);
+ BIO_printf(bio_err,
+ "Generating %s parameters, %d bit long %sprime\n",
+ alg, num, dsaparam ? "" : "safe ");
+
+ if (EVP_PKEY_paramgen_init(ctx) <= 0) {
+ BIO_printf(bio_err,
+ "Error, unable to initialise %s parameters\n",
+ alg);
+ goto end;
+ }
+
+ if (dsaparam) {
+ if (!EVP_PKEY_CTX_set_dsa_paramgen_bits(ctx, num)) {
+ BIO_printf(bio_err, "Error, unable to set DSA prime length\n");
+ goto end;
+ }
+ } else {
+ if (!EVP_PKEY_CTX_set_dh_paramgen_prime_len(ctx, num)) {
+ BIO_printf(bio_err, "Error, unable to set DH prime length\n");
+ goto end;
+ }
+ if (!EVP_PKEY_CTX_set_dh_paramgen_generator(ctx, g)) {
+ BIO_printf(bio_err, "Error, unable to set generator\n");
+ goto end;
+ }
+ }
+
+ tmppkey = app_paramgen(ctx, alg);
+ EVP_PKEY_CTX_free(ctx);
+ ctx = NULL;
+ if (dsaparam) {
+ pkey = dsa_to_dh(tmppkey);
+ if (pkey == NULL)
+ goto end;
+ EVP_PKEY_free(tmppkey);
+ } else {
+ pkey = tmppkey;
+ }
+ tmppkey = NULL;
+ } else {
+ OSSL_DECODER_CTX *decoderctx = NULL;
+ const char *keytype = "DH";
+ int done;
+
+ in = bio_open_default(infile, 'r', informat);
+ if (in == NULL)
+ goto end;
+
+ do {
+ /*
+ * We assume we're done unless we explicitly want to retry and set
+ * this to 0 below.
+ */
+ done = 1;
+ /*
+ * We set NULL for the keytype to allow any key type. We don't know
+ * if we're going to get DH or DHX (or DSA in the event of dsaparam).
+ * We check that we got one of those key types afterwards.
+ */
+ decoderctx
+ = OSSL_DECODER_CTX_new_for_pkey(&tmppkey,
+ (informat == FORMAT_ASN1)
+ ? "DER" : "PEM",
+ NULL,
+ (informat == FORMAT_ASN1)
+ ? keytype : NULL,
+ OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS,
+ NULL, NULL);
+
+ if (decoderctx != NULL
+ && !OSSL_DECODER_from_bio(decoderctx, in)
+ && informat == FORMAT_ASN1
+ && strcmp(keytype, "DH") == 0) {
+ /*
+ * When reading DER we explicitly state the expected keytype
+ * because, unlike PEM, there is no header to declare what
+ * the contents of the DER file are. The decoders just try
+ * and guess. Unfortunately with DHX key types they may guess
+ * wrong and think we have a DSA keytype. Therefore we try
+ * both DH and DHX sequentially.
+ */
+ keytype = "DHX";
+ /*
+ * BIO_reset() returns 0 for success for file BIOs only!!!
+ * This won't work for stdin (and never has done)
+ */
+ if (BIO_reset(in) == 0)
+ done = 0;
+ }
+ OSSL_DECODER_CTX_free(decoderctx);
+ } while (!done);
+ if (tmppkey == NULL) {
+ BIO_printf(bio_err, "Error, unable to load parameters\n");
+ goto end;
+ }
+
+ if (dsaparam) {
+ if (!EVP_PKEY_is_a(tmppkey, "DSA")) {
+ BIO_printf(bio_err, "Error, unable to load DSA parameters\n");
+ goto end;
+ }
+ pkey = dsa_to_dh(tmppkey);
+ if (pkey == NULL)
+ goto end;
+ } else {
+ if (!EVP_PKEY_is_a(tmppkey, "DH")
+ && !EVP_PKEY_is_a(tmppkey, "DHX")) {
+ BIO_printf(bio_err, "Error, unable to load DH parameters\n");
+ goto end;
+ }
+ pkey = tmppkey;
+ tmppkey = NULL;
+ }
+ }
+
+ if (text)
+ EVP_PKEY_print_params(out, pkey, 4, NULL);
+
+ if (check) {
+ ctx = EVP_PKEY_CTX_new_from_pkey(NULL, pkey, NULL);
+ if (ctx == NULL) {
+ BIO_printf(bio_err, "Error, failed to check DH parameters\n");
+ goto end;
+ }
+ if (!EVP_PKEY_param_check(ctx)) {
+ BIO_printf(bio_err, "Error, invalid parameters generated\n");
+ goto end;
+ }
+ BIO_printf(bio_err, "DH parameters appear to be ok.\n");
+ }
+
+ if (!noout) {
+ OSSL_ENCODER_CTX *ectx =
+ OSSL_ENCODER_CTX_new_for_pkey(pkey,
+ OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS,
+ outformat == FORMAT_ASN1
+ ? "DER" : "PEM",
+ NULL, NULL);
+
+ if (ectx == NULL || !OSSL_ENCODER_to_bio(ectx, out)) {
+ OSSL_ENCODER_CTX_free(ectx);
+ BIO_printf(bio_err, "Error, unable to write DH parameters\n");
+ goto end;
+ }
+ OSSL_ENCODER_CTX_free(ectx);
+ }
+ ret = 0;
+ end:
+ if (ret != 0)
+ ERR_print_errors(bio_err);
+ BIO_free(in);
+ BIO_free_all(out);
+ EVP_PKEY_free(pkey);
+ EVP_PKEY_free(tmppkey);
+ EVP_PKEY_CTX_free(ctx);
+ release_engine(e);
+ return ret;
+}
+
+/*
+ * Historically we had the low level call DSA_dup_DH() to do this.
+ * That is now deprecated with no replacement. Since we still need to do this
+ * for backwards compatibility reasons, we do it "manually".
*/
+static EVP_PKEY *dsa_to_dh(EVP_PKEY *dh)
+{
+ OSSL_PARAM_BLD *tmpl = NULL;
+ OSSL_PARAM *params = NULL;
+ BIGNUM *bn_p = NULL, *bn_q = NULL, *bn_g = NULL;
+ EVP_PKEY_CTX *ctx = NULL;
+ EVP_PKEY *pkey = NULL;
+
+ if (!EVP_PKEY_get_bn_param(dh, OSSL_PKEY_PARAM_FFC_P, &bn_p)
+ || !EVP_PKEY_get_bn_param(dh, OSSL_PKEY_PARAM_FFC_Q, &bn_q)
+ || !EVP_PKEY_get_bn_param(dh, OSSL_PKEY_PARAM_FFC_G, &bn_g)) {
+ BIO_printf(bio_err, "Error, failed to set DH parameters\n");
+ goto err;
+ }
+
+ if ((tmpl = OSSL_PARAM_BLD_new()) == NULL
+ || !OSSL_PARAM_BLD_push_BN(tmpl, OSSL_PKEY_PARAM_FFC_P,
+ bn_p)
+ || !OSSL_PARAM_BLD_push_BN(tmpl, OSSL_PKEY_PARAM_FFC_Q,
+ bn_q)
+ || !OSSL_PARAM_BLD_push_BN(tmpl, OSSL_PKEY_PARAM_FFC_G,
+ bn_g)
+ || (params = OSSL_PARAM_BLD_to_param(tmpl)) == NULL) {
+ BIO_printf(bio_err, "Error, failed to set DH parameters\n");
+ goto err;
+ }
+
+ ctx = EVP_PKEY_CTX_new_from_name(NULL, "DHX", NULL);
+ if (ctx == NULL
+ || EVP_PKEY_fromdata_init(ctx) <= 0
+ || EVP_PKEY_fromdata(ctx, &pkey, EVP_PKEY_KEY_PARAMETERS, params) <= 0) {
+ BIO_printf(bio_err, "Error, failed to set DH parameters\n");
+ goto err;
+ }
+
+ err:
+ EVP_PKEY_CTX_free(ctx);
+ OSSL_PARAM_free(params);
+ OSSL_PARAM_BLD_free(tmpl);
+ BN_free(bn_p);
+ BN_free(bn_q);
+ BN_free(bn_g);
+ return pkey;
+}
-static void MS_CALLBACK dh_cb(int p, int n, void *arg);
-
-int MAIN(int, char **);
-
-int MAIN(int argc, char **argv)
- {
- ENGINE *e = NULL;
- 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,*engine=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);
-
- 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);
- }
- else if (strcmp(*argv,"-engine") == 0)
- {
- if (--argc < 1) goto bad;
- engine= *(++argv);
- }
- 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 512)\n");
- BIO_printf(bio_err," -engine e use engine e, possibly a hardware device.\n");
- 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();
-
- if (engine != NULL)
- {
- if((e = ENGINE_by_id(engine)) == NULL)
- {
- BIO_printf(bio_err,"invalid engine \"%s\"\n",
- engine);
- goto end;
- }
- if(!ENGINE_set_default(e, ENGINE_METHOD_ALL))
- {
- BIO_printf(bio_err,"can't use that engine\n");
- goto end;
- }
- BIO_printf(bio_err,"engine \"%s\" set.\n", engine);
- /* Free our "structural" reference. */
- ENGINE_free(e);
- }
-
- 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) {
-
- 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;
-
- BIO_printf(bio_err,"Generating DSA parameters, %d bit long prime\n",num);
- dsa = DSA_generate_parameters(num, NULL, 0, NULL, NULL, dh_cb, bio_err);
- if (dsa == NULL)
- {
- 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
- {
- 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");
- dh=DH_generate_parameters(num,g,dh_cb,bio_err);
-
- if (dh == NULL)
- {
- 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 = %d;\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);
- EXIT(ret);
- }
-
-/* dh_cb is identical to dsa_cb in apps/dsaparam.c */
-static void MS_CALLBACK dh_cb(int p, int n, void *arg)
- {
- char c='*';
-
- if (p == 0) c='.';
- if (p == 1) c='+';
- if (p == 2) c='*';
- if (p == 3) c='\n';
- BIO_write((BIO *)arg,&c,1);
- (void)BIO_flush((BIO *)arg);
-#ifdef LINT
- p=n;
-#endif
- }
-
-#endif
projects / openssl.git / blobdiff