entry.dataEncryptIV = new byte[16];
random.nextBytes(entry.dataEncryptIV);
PCFBMode cipher = makeCipher(entry.dataEncryptIV, entry.plainRoutingKey);
cipher.blockEncipher(entry.header, 0, entry.header.length);
cipher.blockEncipher(entry.data, 0, entry.data.length);
entry.getDigestedRoutingKey();
entry.isEncrypted = true;
}