private byte[] receiveSignedBytes(int playerId, boolean verify) {
byte[] message = readInsecuredBytes(playerId);
byte[] signature = readInsecuredBytes(playerId);
if (!verify || rsaKeys.verify(playerId, new String(message), signature)) {
return message;
}
return null;
}
public void sendSignedMessageToAll(String message) {
byte[] signature = rsaKeys.sign(message);
for (int i = 0; i < playerCount; i++) {
if (i != localId) {
sendInsecuredMessage(message, i);
sendInsecuredBytes(signature, i);
}
}
}
private void sendSignedBytes(byte[] data, int playerId) {
OutputStream out = cm.getOutputStream(playerId);
DataOutputStream dos = new DataOutputStream(out);
try {
dos.writeInt(data.length);
dos.write(data);
byte[] signature = rsaKeys.sign(new String(data));
dos.writeInt(signature.length);
dos.write(signature);
} catch (IOException e) {
e.printStackTrace();
}
}