pkcs8.c

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/* pkcs8.c */
/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
 * project 1999-2004.
 */
/* ====================================================================
 * Copyright (c) 1999 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
 *    licensing@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).
 *
 */
#include <stdio.h>
#include <string.h>
#include "apps.h"
#include <openssl/pem.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/pkcs12.h>

#define PROG pkcs8_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;
        int topk8 = 0;
        int pbe_nid = -1;
        const EVP_CIPHER *cipher = NULL;
        int iter = PKCS12_DEFAULT_ITER;
        int informat, outformat;
        int p8_broken = PKCS8_OK;
        int nocrypt = 0;
        X509_SIG *p8;
        PKCS8_PRIV_KEY_INFO *p8inf;
        EVP_PKEY *pkey=NULL;
        char pass[50], *passin = NULL, *passout = NULL, *p8pass = NULL;
        int badarg = 0;
#ifndef OPENSSL_NO_ENGINE
        char *engine=NULL;
#endif

        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,"-v2"))
                        {
                        if (args[1])
                                {
                                args++;
                                cipher=EVP_get_cipherbyname(*args);
                                if (!cipher)
                                        {
                                        BIO_printf(bio_err,
                                                 "Unknown cipher %s\n", *args);
                                        badarg = 1;
                                        }
                                }
                        else
                                badarg = 1;
                        }
                else if (!strcmp(*args,"-v1"))
                        {
                        if (args[1])
                                {
                                args++;
                                pbe_nid=OBJ_txt2nid(*args);
                                if (pbe_nid == NID_undef)
                                        {
                                        BIO_printf(bio_err,
                                                 "Unknown PBE algorithm %s\n", *args);
                                        badarg = 1;
                                        }
                                }
                        else
                                badarg = 1;
                        }
                else 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, "-topk8"))
                        topk8 = 1;
                else if (!strcmp (*args, "-noiter"))
                        iter = 1;
                else if (!strcmp (*args, "-nocrypt"))
                        nocrypt = 1;
                else if (!strcmp (*args, "-nooct"))
                        p8_broken = PKCS8_NO_OCTET;
                else if (!strcmp (*args, "-nsdb"))
                        p8_broken = PKCS8_NS_DB;
                else if (!strcmp (*args, "-embed"))
                        p8_broken = PKCS8_EMBEDDED_PARAM;
                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 badarg = 1;
                args++;
                }

        if (badarg)
                {
                bad:
                BIO_printf(bio_err, "Usage pkcs8 [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");
                BIO_printf(bio_err, "-topk8          output PKCS8 file\n");
                BIO_printf(bio_err, "-nooct          use (nonstandard) no octet format\n");
                BIO_printf(bio_err, "-embed          use (nonstandard) embedded DSA parameters format\n");
                BIO_printf(bio_err, "-nsdb           use (nonstandard) DSA Netscape DB format\n");
                BIO_printf(bio_err, "-noiter         use 1 as iteration count\n");
                BIO_printf(bio_err, "-nocrypt        use or expect unencrypted private key\n");
                BIO_printf(bio_err, "-v2 alg         use PKCS#5 v2.0 and cipher \"alg\"\n");
                BIO_printf(bio_err, "-v1 obj         use PKCS#5 v1.5 and cipher \"alg\"\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");
                return 1;
                }

        if ((pbe_nid == -1) && !cipher)
                pbe_nid = NID_pbeWithMD5AndDES_CBC;

        if (infile)
                {
                if (!(in = BIO_new_file(infile, "rb")))
                        {
                        BIO_printf(bio_err,
                                 "Can't open input file %s\n", infile);
                        return (1);
                        }
                }
        else
                in = BIO_new_fp (stdin, BIO_NOCLOSE);

        if (outfile)
                {
                if (!(out = BIO_new_file (outfile, "wb")))
                        {
                        BIO_printf(bio_err,
                                 "Can't open output file %s\n", outfile);
                        return (1);
                        }
                }
        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 (topk8)
                {
                BIO_free(in); /* Not needed in this section */
                pkey = load_key(bio_err, infile, informat, 1,
                        passin, e, "key");
                if (!pkey)
                        {
                        BIO_free_all(out);
                        return 1;
                        }
                if (!(p8inf = EVP_PKEY2PKCS8_broken(pkey, p8_broken)))
                        {
                        BIO_printf(bio_err, "Error converting key\n");
                        ERR_print_errors(bio_err);
                        EVP_PKEY_free(pkey);
                        BIO_free_all(out);
                        return 1;
                        }
                if (nocrypt)
                        {
                        if (outformat == FORMAT_PEM) 
                                PEM_write_bio_PKCS8_PRIV_KEY_INFO(out, p8inf);
                        else if (outformat == FORMAT_ASN1)
                                i2d_PKCS8_PRIV_KEY_INFO_bio(out, p8inf);
                        else
                                {
                                BIO_printf(bio_err, "Bad format specified for key\n");
                                PKCS8_PRIV_KEY_INFO_free(p8inf);
                                EVP_PKEY_free(pkey);
                                BIO_free_all(out);
                                return (1);
                                }
                        }
                else
                        {
                        if (passout)
                                p8pass = passout;
                        else
                                {
                                p8pass = pass;
                                if (EVP_read_pw_string(pass, sizeof pass, "Enter Encryption Password:", 1))
                                        {
                                        PKCS8_PRIV_KEY_INFO_free(p8inf);
                                        EVP_PKEY_free(pkey);
                                        BIO_free_all(out);
                                        return (1);
                                        }
                                }
                        app_RAND_load_file(NULL, bio_err, 0);
                        if (!(p8 = PKCS8_encrypt(pbe_nid, cipher,
                                        p8pass, strlen(p8pass),
                                        NULL, 0, iter, p8inf)))
                                {
                                BIO_printf(bio_err, "Error encrypting key\n");
                                ERR_print_errors(bio_err);
                                PKCS8_PRIV_KEY_INFO_free(p8inf);
                                EVP_PKEY_free(pkey);
                                BIO_free_all(out);
                                return (1);
                                }
                        app_RAND_write_file(NULL, bio_err);
                        if (outformat == FORMAT_PEM) 
                                PEM_write_bio_PKCS8(out, p8);
                        else if (outformat == FORMAT_ASN1)
                                i2d_PKCS8_bio(out, p8);
                        else
                                {
                                BIO_printf(bio_err, "Bad format specified for key\n");
                                PKCS8_PRIV_KEY_INFO_free(p8inf);
                                EVP_PKEY_free(pkey);
                                BIO_free_all(out);
                                return (1);
                                }
                        X509_SIG_free(p8);
                        }

                PKCS8_PRIV_KEY_INFO_free (p8inf);
                EVP_PKEY_free(pkey);
                BIO_free_all(out);
                if (passin)
                        OPENSSL_free(passin);
                if (passout)
                        OPENSSL_free(passout);
                return (0);
                }

        if (nocrypt)
                {
                if (informat == FORMAT_PEM) 
                        p8inf = PEM_read_bio_PKCS8_PRIV_KEY_INFO(in,NULL,NULL, NULL);
                else if (informat == FORMAT_ASN1)
                        p8inf = d2i_PKCS8_PRIV_KEY_INFO_bio(in, NULL);
                else
                        {
                        BIO_printf(bio_err, "Bad format specified for key\n");
                        return (1);
                        }
                }
        else
                {
                if (informat == FORMAT_PEM) 
                        p8 = PEM_read_bio_PKCS8(in, NULL, NULL, NULL);
                else if (informat == FORMAT_ASN1)
                        p8 = d2i_PKCS8_bio(in, NULL);
                else
                        {
                        BIO_printf(bio_err, "Bad format specified for key\n");
                        return (1);
                        }

                if (!p8)
                        {
                        BIO_printf (bio_err, "Error reading key\n");
                        ERR_print_errors(bio_err);
                        return (1);
                        }
                if (passin)
                        p8pass = passin;
                else
                        {
                        p8pass = pass;
                        EVP_read_pw_string(pass, sizeof pass, "Enter Password:", 0);
                        }
                p8inf = PKCS8_decrypt(p8, p8pass, strlen(p8pass));
                X509_SIG_free(p8);
                }

        if (!p8inf)
                {
                BIO_printf(bio_err, "Error decrypting key\n");
                ERR_print_errors(bio_err);
                return (1);
                }

        if (!(pkey = EVP_PKCS82PKEY(p8inf)))
                {
                BIO_printf(bio_err, "Error converting key\n");
                ERR_print_errors(bio_err);
                return (1);
                }
        
        if (p8inf->broken)
                {
                BIO_printf(bio_err, "Warning: broken key encoding: ");
                switch (p8inf->broken)
                        {
                        case PKCS8_NO_OCTET:
                        BIO_printf(bio_err, "No Octet String in PrivateKey\n");
                        break;

                        case PKCS8_EMBEDDED_PARAM:
                        BIO_printf(bio_err, "DSA parameters included in PrivateKey\n");
                        break;

                        case PKCS8_NS_DB:
                        BIO_printf(bio_err, "DSA public key include in PrivateKey\n");
                        break;

                        default:
                        BIO_printf(bio_err, "Unknown broken type\n");
                        break;
                }
        }
        
        PKCS8_PRIV_KEY_INFO_free(p8inf);
        if (outformat == FORMAT_PEM) 
                PEM_write_bio_PrivateKey(out, pkey, NULL, NULL, 0, NULL, passout);
        else if (outformat == FORMAT_ASN1)
                i2d_PrivateKey_bio(out, pkey);
        else
                {
                BIO_printf(bio_err, "Bad format specified for key\n");
                        return (1);
                }

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

        return (0);
        }

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