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pkcs8.c
/* pkcs8.c */
/* Written by Dr Stephen N Henson (steve@openssl.org) 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 = NULL;
      PKCS8_PRIV_KEY_INFO *p8inf = NULL;
      EVP_PKEY *pkey=NULL;
      char pass[50], *passin = NULL, *passout = NULL, *p8pass = NULL;
      int badarg = 0;
      int ret = 1;
#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
            goto end;
            }

#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 ((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);
                  goto end;
                  }
            }
      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);
                  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 (topk8)
            {
            pkey = load_key(bio_err, infile, informat, 1,
                  passin, e, "key");
            if (!pkey)
                  goto end;
            if (!(p8inf = EVP_PKEY2PKCS8_broken(pkey, p8_broken)))
                  {
                  BIO_printf(bio_err, "Error converting key\n");
                  ERR_print_errors(bio_err);
                  goto end;
                  }
            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");
                        goto end;
                        }
                  }
            else
                  {
                  if (passout)
                        p8pass = passout;
                  else
                        {
                        p8pass = pass;
                        if (EVP_read_pw_string(pass, sizeof pass, "Enter Encryption Password:", 1))
                              goto end;
                        }
                  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);
                        goto end;
                        }
                  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");
                        goto end;
                        }
                  }

            ret = 0;
            goto end;
            }

      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");
                  goto end;
                  }
            }
      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");
                  goto end;
                  }

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

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

      if (!(pkey = EVP_PKCS82PKEY(p8inf)))
            {
            BIO_printf(bio_err, "Error converting key\n");
            ERR_print_errors(bio_err);
            goto end;
            }
      
      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;

                  case PKCS8_NEG_PRIVKEY:
                  BIO_printf(bio_err, "DSA private key value is negative\n");
                  break;

                  default:
                  BIO_printf(bio_err, "Unknown broken type\n");
                  break;
            }
      }
      
      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");
                  goto end;
            }
      ret = 0;

      end:
      X509_SIG_free(p8);
      PKCS8_PRIV_KEY_INFO_free(p8inf);
      EVP_PKEY_free(pkey);
      BIO_free_all(out);
      BIO_free(in);
      if (passin)
            OPENSSL_free(passin);
      if (passout)
            OPENSSL_free(passout);

      return ret;
      }

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