mirror of
https://github.com/openssl/openssl.git
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8c040c086c
In some error cases the normal cleanup did not happen, but instead an exit(1) which caused some memory leaks, as reported in #22049. Reviewed-by: Tom Cosgrove <tom.cosgrove@arm.com> Reviewed-by: Nicola Tuveri <nic.tuv@gmail.com> (Merged from https://github.com/openssl/openssl/pull/22055)
254 lines
7.6 KiB
C
254 lines
7.6 KiB
C
/*
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* Copyright 1995-2023 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <openssl/opensslconf.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <string.h>
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#include "apps.h"
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#include "progs.h"
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#include <openssl/bio.h>
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#include <openssl/err.h>
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#include <openssl/bn.h>
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#include <openssl/dsa.h>
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#include <openssl/x509.h>
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#include <openssl/pem.h>
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static int verbose = 0;
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typedef enum OPTION_choice {
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OPT_COMMON,
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OPT_INFORM, OPT_OUTFORM, OPT_IN, OPT_OUT, OPT_TEXT,
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OPT_NOOUT, OPT_GENKEY, OPT_ENGINE, OPT_VERBOSE, OPT_QUIET,
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OPT_R_ENUM, OPT_PROV_ENUM
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} OPTION_CHOICE;
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const OPTIONS dsaparam_options[] = {
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{OPT_HELP_STR, 1, '-', "Usage: %s [options] [numbits] [numqbits]\n"},
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OPT_SECTION("General"),
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{"help", OPT_HELP, '-', "Display this summary"},
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#ifndef OPENSSL_NO_ENGINE
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{"engine", OPT_ENGINE, 's', "Use engine e, possibly a hardware device"},
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#endif
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OPT_SECTION("Input"),
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{"in", OPT_IN, '<', "Input file"},
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{"inform", OPT_INFORM, 'F', "Input format - DER or PEM"},
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OPT_SECTION("Output"),
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{"out", OPT_OUT, '>', "Output file"},
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{"outform", OPT_OUTFORM, 'F', "Output format - DER or PEM"},
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{"text", OPT_TEXT, '-', "Print as text"},
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{"noout", OPT_NOOUT, '-', "No output"},
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{"verbose", OPT_VERBOSE, '-', "Verbose output"},
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{"quiet", OPT_QUIET, '-', "Terse output"},
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{"genkey", OPT_GENKEY, '-', "Generate a DSA key"},
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OPT_R_OPTIONS,
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OPT_PROV_OPTIONS,
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OPT_PARAMETERS(),
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{"numbits", 0, 0, "Number of bits if generating parameters or key (optional)"},
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{"numqbits", 0, 0, "Number of bits in the subprime parameter q if generating parameters or key (optional)"},
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{NULL}
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};
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int dsaparam_main(int argc, char **argv)
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{
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ENGINE *e = NULL;
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BIO *out = NULL;
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EVP_PKEY *params = NULL, *pkey = NULL;
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EVP_PKEY_CTX *ctx = NULL;
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int numbits = -1, numqbits = -1, num = 0, genkey = 0;
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int informat = FORMAT_UNDEF, outformat = FORMAT_PEM, noout = 0;
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int ret = 1, i, text = 0, private = 0;
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char *infile = NULL, *outfile = NULL, *prog;
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OPTION_CHOICE o;
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prog = opt_init(argc, argv, dsaparam_options);
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while ((o = opt_next()) != OPT_EOF) {
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switch (o) {
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case OPT_EOF:
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case OPT_ERR:
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opthelp:
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BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
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goto end;
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case OPT_HELP:
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opt_help(dsaparam_options);
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ret = 0;
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goto end;
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case OPT_INFORM:
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if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
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goto opthelp;
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break;
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case OPT_IN:
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infile = opt_arg();
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break;
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case OPT_OUTFORM:
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if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
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goto opthelp;
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break;
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case OPT_OUT:
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outfile = opt_arg();
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break;
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case OPT_ENGINE:
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e = setup_engine(opt_arg(), 0);
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break;
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case OPT_TEXT:
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text = 1;
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break;
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case OPT_GENKEY:
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genkey = 1;
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break;
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case OPT_R_CASES:
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if (!opt_rand(o))
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goto end;
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break;
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case OPT_PROV_CASES:
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if (!opt_provider(o))
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goto end;
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break;
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case OPT_NOOUT:
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noout = 1;
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break;
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case OPT_VERBOSE:
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verbose = 1;
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break;
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case OPT_QUIET:
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verbose = 0;
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break;
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}
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}
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/* Optional args are bitsize and q bitsize. */
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argc = opt_num_rest();
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argv = opt_rest();
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if (argc == 2) {
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if (!opt_int(argv[0], &num) || num < 0)
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goto opthelp;
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if (!opt_int(argv[1], &numqbits) || numqbits < 0)
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goto opthelp;
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} else if (argc == 1) {
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if (!opt_int(argv[0], &num) || num < 0)
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goto opthelp;
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} else if (!opt_check_rest_arg(NULL)) {
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goto opthelp;
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}
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if (!app_RAND_load())
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goto end;
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/* generate a key */
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numbits = num;
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private = genkey ? 1 : 0;
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out = bio_open_owner(outfile, outformat, private);
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if (out == NULL)
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goto end;
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ctx = EVP_PKEY_CTX_new_from_name(app_get0_libctx(), "DSA", app_get0_propq());
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if (ctx == NULL) {
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BIO_printf(bio_err,
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"Error, DSA parameter generation context allocation failed\n");
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goto end;
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}
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if (numbits > 0) {
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if (numbits > OPENSSL_DSA_MAX_MODULUS_BITS)
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BIO_printf(bio_err,
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"Warning: It is not recommended to use more than %d bit for DSA keys.\n"
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" Your key size is %d! Larger key size may behave not as expected.\n",
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OPENSSL_DSA_MAX_MODULUS_BITS, numbits);
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EVP_PKEY_CTX_set_app_data(ctx, bio_err);
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if (verbose) {
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EVP_PKEY_CTX_set_cb(ctx, progress_cb);
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BIO_printf(bio_err, "Generating DSA parameters, %d bit long prime\n",
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num);
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BIO_printf(bio_err, "This could take some time\n");
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}
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if (EVP_PKEY_paramgen_init(ctx) <= 0) {
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BIO_printf(bio_err,
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"Error, DSA key generation paramgen init failed\n");
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goto end;
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}
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if (EVP_PKEY_CTX_set_dsa_paramgen_bits(ctx, num) <= 0) {
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BIO_printf(bio_err,
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"Error, DSA key generation setting bit length failed\n");
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goto end;
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}
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if (numqbits > 0) {
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if (EVP_PKEY_CTX_set_dsa_paramgen_q_bits(ctx, numqbits) <= 0) {
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BIO_printf(bio_err,
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"Error, DSA key generation setting subprime bit length failed\n");
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goto end;
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}
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}
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params = app_paramgen(ctx, "DSA");
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} else {
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params = load_keyparams(infile, informat, 1, "DSA", "DSA parameters");
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}
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if (params == NULL) {
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/* Error message should already have been displayed */
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goto end;
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}
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if (text) {
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EVP_PKEY_print_params(out, params, 0, NULL);
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}
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if (outformat == FORMAT_ASN1 && genkey)
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noout = 1;
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if (!noout) {
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if (outformat == FORMAT_ASN1)
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i = i2d_KeyParams_bio(out, params);
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else
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i = PEM_write_bio_Parameters(out, params);
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if (!i) {
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BIO_printf(bio_err, "Error, unable to write DSA parameters\n");
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goto end;
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}
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}
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if (genkey) {
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EVP_PKEY_CTX_free(ctx);
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ctx = EVP_PKEY_CTX_new_from_pkey(app_get0_libctx(), params,
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app_get0_propq());
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if (ctx == NULL) {
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BIO_printf(bio_err,
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"Error, DSA key generation context allocation failed\n");
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goto end;
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}
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if (EVP_PKEY_keygen_init(ctx) <= 0) {
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BIO_printf(bio_err,
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"Error, unable to initialise for key generation\n");
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goto end;
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}
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pkey = app_keygen(ctx, "DSA", numbits, verbose);
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if (pkey == NULL)
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goto end;
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assert(private);
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if (outformat == FORMAT_ASN1)
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i = i2d_PrivateKey_bio(out, pkey);
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else
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i = PEM_write_bio_PrivateKey(out, pkey, NULL, NULL, 0, NULL, NULL);
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}
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ret = 0;
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end:
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if (ret != 0)
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ERR_print_errors(bio_err);
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BIO_free_all(out);
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EVP_PKEY_CTX_free(ctx);
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EVP_PKEY_free(pkey);
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EVP_PKEY_free(params);
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release_engine(e);
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return ret;
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}
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