Support for encryption ciphers that require an initialization vector -------------------------------------------------------------------- Key: JGRP-2386 URL: https://issues.jboss.org/browse/JGRP-2386 Project: JGroups Issue Type: Enhancement Affects Versions: 4.1.5, 3.6.19 Reporter: Nick Sawadsky Assignee: Bela Ban Priority: Minor By default, Encrypt sets sym_algorithm to "AES". As a result, the default cipher mode is used, which is ECB. ECB encrypts the same plaintext block to the same ciphertext every time, which can give attackers insight into the types of messages being exchanged. Modes like CBC, that use a random initialization vector (IV) are not susceptible to this problem, except in the case where a given IV is reused with the same key. It would be good to modify Encrypt to support ciphers that require an IV, such as AES/CBC/PKCS5Padding.