Examples of codec.asn1.DERDecoder

codec.asn1.OIDRegistry
Decodes ASN.1/DER encoded types according to the rules set forth in ITU-T Recommendation X.690.
Decoders can be operated in two modi. The first mode just reads any ASN.1 type encountered in a stream and returns the instantiated objects. This mode is used if for instance method {@link #readType() readType()}is called.
The second mode matches the decoded data against an application-specified ASN.1 structure. Violations of the structure definition causes an exception being thrown. @author Volker Roth @author Stefan Endler @version "$Id: DERDecoder.java,v 1.3 2007/08/11 18:21:50 sendler Exp $"

     * @throws IOException DOCUMENT ME!
     */
    public void decode(byte[] encodedData) throws ASN1Exception, IOException
    {
        ByteArrayInputStream in;
        DERDecoder decoder;


        in          = new ByteArrayInputStream(encodedData);
        decoder     = new DERDecoder(in);


        this.decode(decoder);
        decoder.close();
    }

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     */
    private ContentInfo makeData(SafeContents safe) throws IOException,
      ASN1Exception {
  Data data = null;
  ByteArrayOutputStream baos = new ByteArrayOutputStream();
  DEREncoder encoder = new DEREncoder(baos);
  safe.encode(encoder);
  data = new Data(baos.toByteArray());
  baos.close();
  ContentInfo cInfo = new ContentInfo(data);
  return cInfo;

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    private ContentInfo makeEncryptedData(SafeContents safe, char[] pwd,
      String algorithm) throws IOException, ASN1Exception,
      GeneralSecurityException {
  ByteArrayOutputStream baos = new ByteArrayOutputStream();
  ByteArrayInputStream bais;
  DEREncoder encoder = new DEREncoder(baos);
  safe.encode(encoder);
  byte[] help = baos.toByteArray();


  // for ( int i = 0; i < help.length; i++)
  // System.out.print(help[i] + "\t");

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      java.security.cert.X509Certificate[] cert) throws IOException,
      GeneralSecurityException, BadNameException, ASN1Exception {
  // BER encode the SafeBag
  ByteArrayOutputStream baos = new ByteArrayOutputStream();
  ByteArrayInputStream bais;
  DEREncoder encoder = new DEREncoder(baos);
  safe.encode(encoder);
  bais = new ByteArrayInputStream(baos.toByteArray());
  baos.close();


  // Make an envelopedData and put it in a ContentInfo

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     *                 if an exception is thrown while encoding the given key.
     *                 No such exception should ever happen.
     */
    public PrivateKeyInfo(AlgorithmIdentifier aid, ASN1Type key) {
  ByteArrayOutputStream bos;
  DEREncoder enc;
  byte[] code;


  version_ = new ASN1Integer(VERSION);
  add(version_);


  algorithm_ = aid;
  add(algorithm_);


  try {
      bos = new ByteArrayOutputStream();
      enc = new DEREncoder(bos);
      key.encode(enc);
      code = bos.toByteArray();
      enc.close();
  } catch (IOException e) {
      throw new InconsistentStateException("Caught IOException!");
  } catch (ASN1Exception e) {
      throw new InconsistentStateException("Caught ASN1Exception!");
  }

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     *                 defined by the installed providers.
     */
    public PrivateKey getPrivateKey() throws NoSuchAlgorithmException {
  ByteArrayOutputStream bos;
  PKCS8EncodedKeySpec spec;
  DEREncoder enc;
  KeyFactory kf;
  String alg;


  try {
      bos = new ByteArrayOutputStream();
      enc = new DEREncoder(bos);
      encode(enc);
      spec = new PKCS8EncodedKeySpec(bos.toByteArray());
      enc.close();


      alg = algorithm_.getAlgorithmOID().toString();
      kf = KeyFactory.getInstance(alg);


      return kf.generatePrivate(spec);

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     *                 if an internal error occurs while the key is encoded.
     *                 This should never happen.
     */
    protected void setRawKey(ASN1Type key) {
  ByteArrayOutputStream bos;
  DEREncoder enc;


  try {
      bos = new ByteArrayOutputStream();
      enc = new DEREncoder(bos);
      key.encode(enc);
      encodedKey_ = new ASN1OctetString(bos.toByteArray());
      enc.close();
      set(2, encodedKey_);
  } catch (ASN1Exception e) {
      throw new InconsistentStateException("Internal, encoding error!");
  } catch (IOException e) {
      throw new InconsistentStateException(

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  if (registry == null) {
      registry = OIDRegistry.getGlobalOIDRegistry();
  }
  type_ = new ASN1ObjectIdentifier();
  values_ = new ASN1SetOf(new DefinedByResolver(registry, type_));


  add(type_);
  add(values_);
    }

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    static public OIDRegistry getDefaultRegistry() {
  return default_;
    }


    public static void main(String[] argv) {
  OIDRegistry reg;
  int n;


  try {
      reg = PKCS12OIDRegistry.getDefaultRegistry();


      for (n = 0; n < argv.length; n++) {
    System.out.println(reg.getASN1Type(new ASN1ObjectIdentifier(
      argv[n])));
      }
  } catch (Exception e) {
      e.printStackTrace(System.err);
  }

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    static public OIDRegistry getDefaultRegistry() {
  return default_;
    }


    public static void main(String[] argv) {
  OIDRegistry reg;
  int n;


  try {
      reg = PKCSRegistry.getDefaultRegistry();


      for (n = 0; n < argv.length; n++) {
    System.out.println(reg.getASN1Type(new ASN1ObjectIdentifier(
      argv[n])));
      }
  } catch (Exception e) {
      e.printStackTrace(System.err);
  }

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