Android Open Source - CipherChat Check Session Message

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License

The source code is released under:

MIT License

Java Source Code

package com.desperate.common.replies;
/*  ww  w . j a  va2s. co  m*/
import java.io.UnsupportedEncodingException;
import javax.crypto.spec.SecretKeySpec;

import com.desperate.common.Utilities;

/**
 * 
 * 6. Eks(Rc); <br>
 * 7. Eks(Rc - 1);<br>
 * 
 * 
 * @author SIRS-RAR
 * 
 */
public class CheckSessionMessage extends ReplyMessage {

  /**  */
  private static final long serialVersionUID = 1647421209753843361L;

  /** Is actually a {@link Long}. */
  public byte[] bobNonce;

  @Override
  public String getStringToHMAC() {
    try {
      return timestamp + new String(bobNonce, Utilities.charset);
    } catch (UnsupportedEncodingException e) {
      e.printStackTrace();
      throw new RuntimeException(e);
    }
  }

  public Long getNonce(SecretKeySpec sessionKey) {

    try {
      return (Long) Utilities.decipherObject(bobNonce, sessionKey);
    } catch (Exception e) {
      e.printStackTrace();
      throw new RuntimeException(e);

    }
  }

  public boolean setNonce(Long nonce, SecretKeySpec sessionKey) {
    try {
      this.bobNonce = Utilities.cipherObject(nonce, sessionKey);
      return true;
    } catch (Exception e) {
      e.printStackTrace();
      throw new RuntimeException(e);

    }
  }

}

Java Source Code List

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