public AuthenticatedSocket(InetAddress ia, int port, MessageDigest md, byte[] secret)
throws IOException, AuthenticationException {
super(ia, port);
try {
OutputStream output = this.getOutputStream();
InputStream input = this.getInputStream();
// Get challenge length
byte[] challengeSize = new byte[4];
input.read(challengeSize);
// Receive random challenge string
byte[] challenge = new byte[Bytes.toInt(challengeSize)];
input.read(challenge);
// Generate MD5 hash
byte[] append = Bytes.append(challenge, secret);
byte[] hash = md.digest(append);
// Send time and hash strings
output.write(hash);
} catch (Exception e) {
throw new AuthenticationException("Authentication failed: " + e.getMessage());
}
}
