I want to generate a secret key (128 bit) based upon some predefined seed value .
Currently i am using javax.crypto.KeyGenerator (AES) to generate key using secureRandom .
How can i pass my own seen rather than using secureRandom object .
code i am currently using :
//
KeyGenerator kgen = KeyGenerator.getInstance("AES");
kgen.init(128,SecureRandom random); // 128 bits key size
key = kgen.generateKey();
//
Thank You ..
You can set the seed of the SecureRandom
.
SecureRandom random = new SecureRandom();
random.setSeed(1000L);
When testing this i did notice that to get consistant results you had to recreate the KeyGenerator
if you changed the seed at any time.