406 lines
12 KiB
C
406 lines
12 KiB
C
/* apps/genpkey.c */
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/*
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* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
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* 2006
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*/
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/* ====================================================================
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* Copyright (c) 2006 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* licensing@OpenSSL.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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#include <stdio.h>
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#include <string.h>
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#include "apps.h"
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#include <openssl/pem.h>
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#include <openssl/err.h>
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#include <openssl/evp.h>
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#ifndef OPENSSL_NO_ENGINE
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# include <openssl/engine.h>
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#endif
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static int init_keygen_file(BIO *err, EVP_PKEY_CTX **pctx,
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const char *file, ENGINE *e);
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static int genpkey_cb(EVP_PKEY_CTX *ctx);
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#define PROG genpkey_main
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int MAIN(int, char **);
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int MAIN(int argc, char **argv)
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{
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ENGINE *e = NULL;
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char **args, *outfile = NULL;
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char *passarg = NULL;
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BIO *in = NULL, *out = NULL;
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const EVP_CIPHER *cipher = NULL;
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int outformat;
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int text = 0;
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EVP_PKEY *pkey = NULL;
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EVP_PKEY_CTX *ctx = NULL;
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char *pass = NULL;
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int badarg = 0;
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int ret = 1, rv;
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int do_param = 0;
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if (bio_err == NULL)
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bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
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if (!load_config(bio_err, NULL))
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goto end;
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outformat = FORMAT_PEM;
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ERR_load_crypto_strings();
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OpenSSL_add_all_algorithms();
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args = argv + 1;
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while (!badarg && *args && *args[0] == '-') {
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if (!strcmp(*args, "-outform")) {
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if (args[1]) {
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args++;
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outformat = str2fmt(*args);
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} else
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badarg = 1;
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} else if (!strcmp(*args, "-pass")) {
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if (!args[1])
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goto bad;
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passarg = *(++args);
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}
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#ifndef OPENSSL_NO_ENGINE
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else if (strcmp(*args, "-engine") == 0) {
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if (!args[1])
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goto bad;
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e = setup_engine(bio_err, *(++args), 0);
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}
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#endif
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else if (!strcmp(*args, "-paramfile")) {
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if (!args[1])
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goto bad;
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args++;
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if (do_param == 1)
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goto bad;
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if (!init_keygen_file(bio_err, &ctx, *args, e))
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goto end;
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} else if (!strcmp(*args, "-out")) {
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if (args[1]) {
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args++;
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outfile = *args;
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} else
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badarg = 1;
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} else if (strcmp(*args, "-algorithm") == 0) {
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if (!args[1])
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goto bad;
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if (!init_gen_str(bio_err, &ctx, *(++args), e, do_param))
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goto end;
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} else if (strcmp(*args, "-pkeyopt") == 0) {
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if (!args[1])
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goto bad;
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if (!ctx) {
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BIO_puts(bio_err, "No keytype specified\n");
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goto bad;
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} else if (pkey_ctrl_string(ctx, *(++args)) <= 0) {
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BIO_puts(bio_err, "parameter setting error\n");
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ERR_print_errors(bio_err);
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goto end;
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}
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} else if (strcmp(*args, "-genparam") == 0) {
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if (ctx)
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goto bad;
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do_param = 1;
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} else if (strcmp(*args, "-text") == 0)
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text = 1;
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else {
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cipher = EVP_get_cipherbyname(*args + 1);
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if (!cipher) {
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BIO_printf(bio_err, "Unknown cipher %s\n", *args + 1);
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badarg = 1;
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}
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if (do_param == 1)
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badarg = 1;
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}
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args++;
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}
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if (!ctx)
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badarg = 1;
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if (badarg) {
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bad:
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BIO_printf(bio_err, "Usage: genpkey [options]\n");
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BIO_printf(bio_err, "where options may be\n");
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BIO_printf(bio_err, "-out file output file\n");
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BIO_printf(bio_err,
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"-outform X output format (DER or PEM)\n");
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BIO_printf(bio_err,
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"-pass arg output file pass phrase source\n");
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BIO_printf(bio_err,
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"-<cipher> use cipher <cipher> to encrypt the key\n");
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#ifndef OPENSSL_NO_ENGINE
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BIO_printf(bio_err,
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"-engine e use engine e, possibly a hardware device.\n");
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#endif
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BIO_printf(bio_err, "-paramfile file parameters file\n");
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BIO_printf(bio_err, "-algorithm alg the public key algorithm\n");
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BIO_printf(bio_err,
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"-pkeyopt opt:value set the public key algorithm option <opt>\n"
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" to value <value>\n");
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BIO_printf(bio_err,
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"-genparam generate parameters, not key\n");
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BIO_printf(bio_err, "-text print the in text\n");
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BIO_printf(bio_err,
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"NB: options order may be important! See the manual page.\n");
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goto end;
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}
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if (!app_passwd(bio_err, passarg, NULL, &pass, NULL)) {
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BIO_puts(bio_err, "Error getting password\n");
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goto end;
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}
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if (outfile) {
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if (!(out = BIO_new_file(outfile, "wb"))) {
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BIO_printf(bio_err, "Can't open output file %s\n", outfile);
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goto end;
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}
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} else {
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out = BIO_new_fp(stdout, BIO_NOCLOSE);
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#ifdef OPENSSL_SYS_VMS
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{
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BIO *tmpbio = BIO_new(BIO_f_linebuffer());
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out = BIO_push(tmpbio, out);
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}
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#endif
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}
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EVP_PKEY_CTX_set_cb(ctx, genpkey_cb);
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EVP_PKEY_CTX_set_app_data(ctx, bio_err);
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if (do_param) {
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if (EVP_PKEY_paramgen(ctx, &pkey) <= 0) {
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BIO_puts(bio_err, "Error generating parameters\n");
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ERR_print_errors(bio_err);
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goto end;
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}
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} else {
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if (EVP_PKEY_keygen(ctx, &pkey) <= 0) {
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BIO_puts(bio_err, "Error generating key\n");
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ERR_print_errors(bio_err);
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goto end;
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}
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}
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if (do_param)
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rv = PEM_write_bio_Parameters(out, pkey);
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else if (outformat == FORMAT_PEM)
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rv = PEM_write_bio_PrivateKey(out, pkey, cipher, NULL, 0, NULL, pass);
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else if (outformat == FORMAT_ASN1)
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rv = i2d_PrivateKey_bio(out, pkey);
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else {
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BIO_printf(bio_err, "Bad format specified for key\n");
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goto end;
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}
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if (rv <= 0) {
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BIO_puts(bio_err, "Error writing key\n");
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ERR_print_errors(bio_err);
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}
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if (text) {
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if (do_param)
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rv = EVP_PKEY_print_params(out, pkey, 0, NULL);
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else
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rv = EVP_PKEY_print_private(out, pkey, 0, NULL);
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if (rv <= 0) {
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BIO_puts(bio_err, "Error printing key\n");
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ERR_print_errors(bio_err);
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}
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}
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ret = 0;
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end:
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if (pkey)
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EVP_PKEY_free(pkey);
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if (ctx)
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EVP_PKEY_CTX_free(ctx);
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if (out)
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BIO_free_all(out);
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BIO_free(in);
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release_engine(e);
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if (pass)
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OPENSSL_free(pass);
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return ret;
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}
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static int init_keygen_file(BIO *err, EVP_PKEY_CTX **pctx,
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const char *file, ENGINE *e)
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{
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BIO *pbio;
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EVP_PKEY *pkey = NULL;
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EVP_PKEY_CTX *ctx = NULL;
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if (*pctx) {
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BIO_puts(err, "Parameters already set!\n");
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return 0;
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}
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pbio = BIO_new_file(file, "r");
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if (!pbio) {
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BIO_printf(err, "Can't open parameter file %s\n", file);
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return 0;
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}
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pkey = PEM_read_bio_Parameters(pbio, NULL);
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BIO_free(pbio);
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if (!pkey) {
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BIO_printf(bio_err, "Error reading parameter file %s\n", file);
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return 0;
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}
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ctx = EVP_PKEY_CTX_new(pkey, e);
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if (!ctx)
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goto err;
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if (EVP_PKEY_keygen_init(ctx) <= 0)
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goto err;
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EVP_PKEY_free(pkey);
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*pctx = ctx;
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return 1;
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err:
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BIO_puts(err, "Error initializing context\n");
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ERR_print_errors(err);
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if (ctx)
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EVP_PKEY_CTX_free(ctx);
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if (pkey)
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EVP_PKEY_free(pkey);
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return 0;
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}
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int init_gen_str(BIO *err, EVP_PKEY_CTX **pctx,
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const char *algname, ENGINE *e, int do_param)
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{
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EVP_PKEY_CTX *ctx = NULL;
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const EVP_PKEY_ASN1_METHOD *ameth;
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ENGINE *tmpeng = NULL;
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int pkey_id;
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if (*pctx) {
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BIO_puts(err, "Algorithm already set!\n");
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return 0;
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}
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ameth = EVP_PKEY_asn1_find_str(&tmpeng, algname, -1);
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#ifndef OPENSSL_NO_ENGINE
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if (!ameth && e)
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ameth = ENGINE_get_pkey_asn1_meth_str(e, algname, -1);
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#endif
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if (!ameth) {
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BIO_printf(bio_err, "Algorithm %s not found\n", algname);
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return 0;
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}
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ERR_clear_error();
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EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, ameth);
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#ifndef OPENSSL_NO_ENGINE
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if (tmpeng)
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ENGINE_finish(tmpeng);
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#endif
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ctx = EVP_PKEY_CTX_new_id(pkey_id, e);
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if (!ctx)
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goto err;
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if (do_param) {
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if (EVP_PKEY_paramgen_init(ctx) <= 0)
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goto err;
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} else {
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if (EVP_PKEY_keygen_init(ctx) <= 0)
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goto err;
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}
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*pctx = ctx;
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return 1;
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err:
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BIO_printf(err, "Error initializing %s context\n", algname);
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ERR_print_errors(err);
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if (ctx)
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EVP_PKEY_CTX_free(ctx);
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return 0;
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}
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static int genpkey_cb(EVP_PKEY_CTX *ctx)
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{
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char c = '*';
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BIO *b = EVP_PKEY_CTX_get_app_data(ctx);
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int p;
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p = EVP_PKEY_CTX_get_keygen_info(ctx, 0);
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if (p == 0)
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c = '.';
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if (p == 1)
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c = '+';
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if (p == 2)
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c = '*';
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if (p == 3)
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c = '\n';
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BIO_write(b, &c, 1);
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(void)BIO_flush(b);
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#ifdef LINT
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p = n;
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#endif
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return 1;
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}
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