pkey.c

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/* apps/pkey.c */
/* Written by Dr Stephen N Henson ([email protected]) for the OpenSSL
 * project 2006
 */
/* ====================================================================
 * Copyright (c) 2006 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
 *    [email protected].
 *
 * 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
 * ([email protected]).  This product includes software written by Tim
 * Hudson ([email protected]).
 *
 */
#include <stdio.h>
#include <string.h>
#include "apps.h"
#include <openssl/pem.h>
#include <openssl/err.h>
#include <openssl/evp.h>

#define PROG pkey_main

int MAIN(int, char **);

int MAIN(int argc, char **argv)
    {
    ENGINE *e = NULL;
    char **args, *infile = NULL, *outfile = NULL;
    char *passargin = NULL, *passargout = NULL;
    BIO *in = NULL, *out = NULL;
    const EVP_CIPHER *cipher = NULL;
    int informat, outformat;
    int pubin = 0, pubout = 0, pubtext = 0, text = 0, noout = 0;
    EVP_PKEY *pkey=NULL;
    char *passin = NULL, *passout = NULL;
    int badarg = 0;
#ifndef OPENSSL_NO_ENGINE
    char *engine=NULL;
#endif
    int ret = 1;

    if (bio_err == NULL)
        bio_err = BIO_new_fp (stderr, BIO_NOCLOSE);

    if (!load_config(bio_err, NULL))
        goto end;

    informat=FORMAT_PEM;
    outformat=FORMAT_PEM;

    ERR_load_crypto_strings();
    OpenSSL_add_all_algorithms();
    args = argv + 1;
    while (!badarg && *args && *args[0] == '-')
        {
        if (!strcmp(*args,"-inform"))
            {
            if (args[1])
                {
                args++;
                informat=str2fmt(*args);
                }
            else badarg = 1;
            }
        else if (!strcmp(*args,"-outform"))
            {
            if (args[1])
                {
                args++;
                outformat=str2fmt(*args);
                }
            else badarg = 1;
            }
        else if (!strcmp(*args,"-passin"))
            {
            if (!args[1]) goto bad;
            passargin= *(++args);
            }
        else if (!strcmp(*args,"-passout"))
            {
            if (!args[1]) goto bad;
            passargout= *(++args);
            }
#ifndef OPENSSL_NO_ENGINE
        else if (strcmp(*args,"-engine") == 0)
            {
            if (!args[1]) goto bad;
            engine= *(++args);
            }
#endif
        else if (!strcmp (*args, "-in"))
            {
            if (args[1])
                {
                args++;
                infile = *args;
                }
            else badarg = 1;
            }
        else if (!strcmp (*args, "-out"))
            {
            if (args[1])
                {
                args++;
                outfile = *args;
                }
            else badarg = 1;
            }
        else if (strcmp(*args,"-pubin") == 0)
            {
            pubin=1;
            pubout=1;
            pubtext=1;
            }
        else if (strcmp(*args,"-pubout") == 0)
            pubout=1;
        else if (strcmp(*args,"-text_pub") == 0)
            {
            pubtext=1;
            text=1;
            }
        else if (strcmp(*args,"-text") == 0)
            text=1;
        else if (strcmp(*args,"-noout") == 0)
            noout=1;
        else
            {
            cipher = EVP_get_cipherbyname(*args + 1);
            if (!cipher)
                {
                BIO_printf(bio_err, "Unknown cipher %s\n",
                                *args + 1);
                badarg = 1;
                }
            }
        args++;
        }

    if (badarg)
        {
        bad:
        BIO_printf(bio_err, "Usage pkey [options]\n");
        BIO_printf(bio_err, "where options are\n");
        BIO_printf(bio_err, "-in file        input file\n");
        BIO_printf(bio_err, "-inform X       input format (DER or PEM)\n");
        BIO_printf(bio_err, "-passin arg     input file pass phrase source\n");
        BIO_printf(bio_err, "-outform X      output format (DER or PEM)\n");
        BIO_printf(bio_err, "-out file       output file\n");
        BIO_printf(bio_err, "-passout arg    output file pass phrase source\n");
#ifndef OPENSSL_NO_ENGINE
        BIO_printf(bio_err, "-engine e       use engine e, possibly a hardware device.\n");
#endif
        return 1;
        }

#ifndef OPENSSL_NO_ENGINE
        e = setup_engine(bio_err, engine, 0);
#endif

    if (!app_passwd(bio_err, passargin, passargout, &passin, &passout))
        {
        BIO_printf(bio_err, "Error getting passwords\n");
        goto end;
        }

    if (outfile)
        {
        if (!(out = BIO_new_file (outfile, "wb")))
            {
            BIO_printf(bio_err,
                 "Can't open output file %s\n", outfile);
            goto end;
            }
        }
    else
        {
        out = BIO_new_fp (stdout, BIO_NOCLOSE);
#ifdef OPENSSL_SYS_VMS
            {
            BIO *tmpbio = BIO_new(BIO_f_linebuffer());
            out = BIO_push(tmpbio, out);
            }
#endif
        }

    if (pubin)
        pkey = load_pubkey(bio_err, infile, informat, 1,
            passin, e, "Public Key");
    else
        pkey = load_key(bio_err, infile, informat, 1,
            passin, e, "key");
    if (!pkey)
        goto end;

    if (!noout)
        {
        if (outformat == FORMAT_PEM) 
            {
            if (pubout)
                PEM_write_bio_PUBKEY(out,pkey);
            else
                PEM_write_bio_PrivateKey(out, pkey, cipher,
                            NULL, 0, NULL, passout);
            }
        else if (outformat == FORMAT_ASN1)
            {
            if (pubout)
                i2d_PUBKEY_bio(out, pkey);
            else
                i2d_PrivateKey_bio(out, pkey);
            }
        else
            {
            BIO_printf(bio_err, "Bad format specified for key\n");
            goto end;
            }

        }

    if (text)
        {
        if (pubtext)
            EVP_PKEY_print_public(out, pkey, 0, NULL);
        else
            EVP_PKEY_print_private(out, pkey, 0, NULL);
        }

    ret = 0;

    end:
    EVP_PKEY_free(pkey);
    BIO_free_all(out);
    BIO_free(in);
    if (passin)
        OPENSSL_free(passin);
    if (passout)
        OPENSSL_free(passout);

    return ret;
    }