AES Encryption Java Invalid Key length

Question

I am trying to create an AES encryption method, but for some reason I keep getting

java.security.InvalidKeyException: Key length not 128/192/256

Answer 1

You can install the JCE Unlimited Strength jars, as is suggested on several other similar questions, or just try including this code in your main function or driver.

try {
    java.lang.reflect.Field field = Class.forName("javax.crypto.JceSecurity").getDeclaredField("isRestricted");
    field.setAccessible(true);
    field.set(null, java.lang.Boolean.FALSE);
} catch (Exception ex) {
    ex.printStackTrace();
}