public byte[] getRemotePublicKey() throws CryptoManagerException {
if (remotePubKey == null) {
throw (new CryptoManagerException("key not yet available"));
}
return (CryptoECCUtils.keyToRawdata(remotePubKey));
}
public void getMessage(ByteBuffer buffer, boolean keys) throws CryptoManagerException {
// System.out.println( "get( " + keys + ") " + this );
try {
putInt(buffer, VERSION, 255);
SecureRandom random = SecureRandom.getInstance("SHA1PRNG");
Signature sig = CryptoECCUtils.getSignature(myPrivateKey);
if (keys) {
final byte[] rawMyPubkey = CryptoECCUtils.keyToRawdata(myPublicKey);
final byte[] rawEphemeralPubkey = CryptoECCUtils.keyToRawdata(ephemeralKeyPair.getPublic());
sig.update(rawMyPubkey);
sig.update(rawEphemeralPubkey);
final byte[] rawSign = sig.sign();
final byte[] pad = new byte[random.nextInt(32)];
random.nextBytes(pad);
putBytes(buffer, rawMyPubkey, 65535);
putBytes(buffer, rawEphemeralPubkey, 65535);
putBytes(buffer, rawSign, 65535);
putBytes(buffer, pad, 65535);
} else {
if (sharedSecret == null) {
throw (new CryptoManagerException("phase error: keys not received"));
}
final byte[] IV = new byte[20 + random.nextInt(32)];
random.nextBytes(IV);
sig.update(IV);
sig.update(sharedSecret);
final byte[] rawSig = sig.sign();
putBytes(buffer, IV, 65535);
putBytes(buffer, rawSig, 65535);
}
} catch (CryptoManagerException e) {
throw (e);
} catch (Throwable e) {
throw (new CryptoManagerException("Failed to generate message"));
}
}
