Method processMsg

java/com/tigervnc/rfb/CSecurityVncAuth.java:32–62

(CConnection cc)

  private static final int vncAuthChallengeSize = 16;

  public boolean processMsg(CConnection cc)
  {
    InStream is = cc.getInStream();
    OutStream os = cc.getOutStream();

    // Read the challenge & obtain the user's password
    ByteBuffer challenge = ByteBuffer.allocate(vncAuthChallengeSize);
    is.readBytes(challenge, vncAuthChallengeSize);
    StringBuffer passwd = new StringBuffer();
    upg.getUserPasswd(cc.isSecure(), null, passwd);

    // Calculate the correct response
    byte[] key = new byte[8];
    int pwdLen = passwd.length();
    byte[] utf8str = new byte[pwdLen];
    try {
      utf8str = passwd.toString().getBytes("UTF8");
    } catch(java.io.UnsupportedEncodingException e) {
      e.printStackTrace();
    }
    for (int i=0; i<8; i++)
      key[i] = i<pwdLen ? utf8str[i] : 0;
    DesCipher des = new DesCipher(key);
    for (int j = 0; j < vncAuthChallengeSize; j += 8)
      des.encrypt(challenge.array(),j,challenge.array(),j);

    // Return the response to the server
    os.writeBytes(challenge.array(), 0, vncAuthChallengeSize);
    os.flush();
    return true;
  }

  public int getType() { return Security.secTypeVncAuth; }
  public String description() { return "No Encryption"; }