Examples of org.ietf.jgss.MessageProp

org.ietf.jgss.MessageProp
This is a utility class used within the per-message GSSContext methods to convey per-message properties.
When used with the GSSContext interface's wrap and getMIC methods, an instance of this class is used to indicate the desired Quality-of-Protection (QOP) and to request if confidentiality services are to be applied to caller supplied data (wrap only). To request default QOP, the value of 0 should be used for QOP.
When used with the unwrap and verifyMIC methods of the GSSContext interface, an instance of this class will be used to indicate the applied QOP and confidentiality services over the supplied message. In the case of verifyMIC, the confidentiality state will always be false. Upon return from these methods, this object will also contain any supplementary status values applicable to the processed token. The supplementary status values can indicate old tokens, out of sequence tokens, gap tokens or duplicate tokens.
@see GSSContext#wrap @see GSSContext#unwrap @see GSSContext#getMIC @see GSSContext#verifyMIC @author Mayank Upadhyay @version 1.10, 11/17/05 @since 1.4

    }
  }


  public byte[] getMIC(byte[] message, int s, int l){
    try{
      MessageProp prop =  new MessageProp(0, true);
      return context.getMIC(message, s, l, prop);
    }
    catch(GSSException ex){
      return null;
    }

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                byte[] msgbytes = msgbuf.getCompactData();
                byte[] inmic = buffer.getBytes();


                try {
                    context.verifyMIC(inmic, 0, inmic.length, msgbytes, 0, msgbytes.length, new MessageProp(false));
                    log.debug("MIC verified");
                    return Boolean.TRUE;
                } catch (GSSException e) {
                    log.info("GSS verification error: {}", e.toString());
                    return Boolean.FALSE;

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                byte[] msgbytes = msgbuf.getCompactData();
                byte[] inmic = buffer.getBytes();


                try {
                    context.verifyMIC(inmic, 0, inmic.length, msgbytes, 0, msgbytes.length, new MessageProp(false));
                    log.debug("MIC verified");
                    return Boolean.TRUE;
                } catch (GSSException e) {
                    log.info("GSS verification error: {}", e.toString());
                    return Boolean.FALSE;

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   *        sent out
   * @param len number of bytes to be sent out
   * @throws IOException if problems encountered
   */
  void write(byte[] buf, int offset, int len) throws IOException {
      MessageProp prop;
      if (doEncryption) {
    prop = new MessageProp(PRIVACY_QOP, true);
      } else { // 2 means "integrity using DES MAC of MD5 of plaintext"
    prop = new MessageProp(INTEGRITY_QOP, false);
      }
      byte[] token = null;
      try {
    try {
        synchronized (gssContext) {
      token = gssContext.wrap(buf, offset, len, prop);
        }
    } catch (GSSException ge) {
        IOException ioe = new IOException(
      "Failed to wrap buf into GSS token.");
        ioe.initCause(ge);
        throw ioe;
    }


    if (doEncryption != prop.getPrivacy()) {
        throw new IOException(
      "Returned token encryption property is: " +
      prop.getPrivacy() + ",\nwhile connection " +
      "encryption requirement is: " + doEncryption);
    }
      
    if (connectionLogger.isLoggable(Level.FINEST)) {
        connectionLogger.log(

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   * @return byte array of the unwrapped GSS token
   * @throws IOException if problems encountered
   */
  byte[] read() throws IOException {
      try {
    MessageProp prop = new MessageProp(0, false);
    byte[] token = new byte[dis.readInt()];
    dis.readFully(token);
    
    byte[] bytes;
    try {
        synchronized (gssContext) {
      bytes = gssContext.unwrap(
          token, 0, token.length, prop);
        }
    } catch (GSSException e) {
        IOException ioe = new IOException(
      "Failed to unwrap a GSS token of length " +
      token.length);
        ioe.initCause(e);
        throw ioe;
    }
    
    /* this state of the connection can changed by
       every incoming token */
    doEncryption = prop.getPrivacy();
    
    if (connectionLogger.isLoggable(Level.FINEST)) {
        connectionLogger.log(
      Level.FINEST,  "received a " + token.length +
      " bytes token (" + (doEncryption ? "" : "not ") +

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    /**
     * Unwrap a key
     */
    public byte[] unwrapKey(byte[] secret) throws WSSecurityException {
        MessageProp mProp = new MessageProp(0, true);
        try {
            return secContext.unwrap(secret, 0, secret.length, mProp);
        } catch (GSSException e) {
            if (LOG.isDebugEnabled()) {
                LOG.debug("Error in cleaning up a GSS context", e);

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    /**
     * Wrap a key
     */
    public byte[] wrapKey(byte[] secret) throws WSSecurityException {
        MessageProp mProp = new MessageProp(0, true);
        try {
            return secContext.wrap(secret, 0, secret.length, mProp);
        } catch (GSSException e) {
            if (LOG.isDebugEnabled()) {
                LOG.debug("Error in cleaning up a GSS context", e);

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    /**
     * Unwrap a key
     */
    public byte[] unwrapKey(byte[] secret) throws WSSecurityException {
        MessageProp mProp = new MessageProp(0, true);
        try {
            return secContext.unwrap(secret, 0, secret.length, mProp);
        } catch (GSSException e) {
            if (LOG.isDebugEnabled()) {
                LOG.debug("Error in cleaning up a GSS context", e);

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    /**
     * Wrap a key
     */
    public byte[] wrapKey(byte[] secret) throws WSSecurityException {
        MessageProp mProp = new MessageProp(0, true);
        try {
            return secContext.wrap(secret, 0, secret.length, mProp);
        } catch (GSSException e) {
            if (LOG.isDebugEnabled()) {
                LOG.debug("Error in cleaning up a GSS context", e);

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      byte [] msgbytes = msgbuf.getCompactData();
      byte [] inmic    = buffer.getBytes();


      try {
        ctxt.verifyMIC(inmic, 0, inmic.length, msgbytes, 0, msgbytes.length, new MessageProp(false));
        log.debug("MIC verified");
        return Boolean.TRUE;
      } catch (GSSException e) {
        log.info("GSS verification error: {}", e.toString());
        return Boolean.FALSE;

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