X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=apps%2Fdhparam.c;h=7cd69b9270258498ae020db8e1812e3d0b70ef35;hp=dc00355b95b7cda3fd04f47501a39bee5fd74524;hb=HEAD;hpb=0b13e9f055d3f7be066dc2e89fc9f9822b12eca7 diff --git a/apps/dhparam.c b/apps/dhparam.c index dc00355b95..ffe6e6cb88 100644 --- a/apps/dhparam.c +++ b/apps/dhparam.c @@ -1,552 +1,418 @@ -/* 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 1995-2023 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 + #include #include #include #include #include "apps.h" +#include "progs.h" #include #include #include +#include #include #include #include - -#ifndef OPENSSL_NO_DSA -#include -#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 - */ - -static void MS_CALLBACK dh_cb(int p, int n, void *arg); - -int MAIN(int, char **); - -int MAIN(int argc, char **argv) - { -#ifndef OPENSSL_NO_ENGINE - ENGINE *e = NULL; -#endif - 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; +#include +#include +#include +#include +#include + +#define DEFBITS 2048 + +static EVP_PKEY *dsa_to_dh(EVP_PKEY *dh); + +static int verbose = 1; + +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_VERBOSE, OPT_QUIET, + 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 - 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); - } + {"engine", OPT_ENGINE, 's', "Use engine e, possibly a hardware device"}, #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 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," -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 - e = 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) { - - 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 \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; ig,data); - printf("\tstatic unsigned char dh%d_g[]={",bits); - for (i=0; ip=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 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 - } + 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"}, + {"verbose", OPT_VERBOSE, '-', "Verbose output"}, + {"quiet", OPT_QUIET, '-', "Terse output"}, + + 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_VERBOSE: + verbose = 1; + break; + case OPT_QUIET: + verbose = 0; + 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"; + + if (infile != NULL) { + BIO_printf(bio_err, "Warning, input file %s ignored\n", infile); + } + + ctx = EVP_PKEY_CTX_new_from_name(app_get0_libctx(), alg, app_get0_propq()); + if (ctx == NULL) { + BIO_printf(bio_err, + "Error, %s param generation context allocation failed\n", + alg); + goto end; + } + EVP_PKEY_CTX_set_app_data(ctx, bio_err); + if (verbose) { + EVP_PKEY_CTX_set_cb(ctx, progress_cb); + 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) <= 0) { + 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) <= 0) { + BIO_printf(bio_err, "Error, unable to set DH prime length\n"); + goto end; + } + if (EVP_PKEY_CTX_set_dh_paramgen_generator(ctx, g) <= 0) { + BIO_printf(bio_err, "Error, unable to set generator\n"); + goto end; + } + } + + tmppkey = app_paramgen(ctx, alg); + if (tmppkey == NULL) + goto end; + 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(app_get0_libctx(), pkey, app_get0_propq()); + if (ctx == NULL) { + BIO_printf(bio_err, "Error, failed to check DH parameters\n"); + goto end; + } + if (EVP_PKEY_param_check(ctx) <= 0) { + 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(app_get0_libctx(), "DHX", app_get0_propq()); + 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; +} -#endif