AES acceleration for Java

Question

I want to encrypt/decrypt lots of small (2-10kB) pieces of data. The performance is ok for now: On a Core2Duo, I get about 90 MBytes/s AES256 (when using 2 threads). But I m

Answer 1

Usually the step which consumes more time is Initiating the KeyGenerator.

KeyGenerator keyGen = KeyGenerator.getInstance("AES");
keyGen.init(256); // This step takes more time
KeyGenerator aesKey = keyGen.generateKey();

The way I solved it is by generating a pool of KeyGenerator instances before the server statup and reusing them for just for Key Generation