Android Open Source - CipherChat Session Key Request Message

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License

The source code is released under:

MIT License

Java Source Code

package com.desperate.common.messages;
// w w w  .j  a  va  2s  .co m
import java.io.UnsupportedEncodingException;

import com.desperate.common.Message;
import com.desperate.common.Utilities;

/**
 * Implements the following messages of the Needham-Shroeder-revisited protocol:
 * <p>
 * 3. <b>A -> KDC:</b> A, B, Ra, Eb(A, Rb)
 * 
 * @author SIRS-RAR
 * 
 */
public class SessionKeyRequestMessage extends Message {

  private static final long serialVersionUID = -1991738735421123912L;

  public String usernameA;
  public String usernameB;
  public Long randomA;

  /** Object of class #{@link com.desperate.common.NoncePacket}. */
  public byte[] userBPacket;

  public SessionKeyRequestMessage(String unameA, String unameB, Long LarondA, byte[] userBPacket) {
    this.usernameA = unameA;
    this.usernameB = unameB;
    this.randomA = LarondA;
    this.userBPacket = userBPacket;
  }

  @Override
  public String getStringToHMAC() {

    try {
      return usernameA + usernameB + randomA.toString() + new String(userBPacket, Utilities.charset);
    } catch (UnsupportedEncodingException e) {
      throw new RuntimeException(e);
    }
  }
}

Java Source Code List

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