get AES Raw Key - Java Security

Java examples for Security:AES

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Description

get AES Raw Key

Demo Code


//package com.java2s;
import java.security.SecureRandom;

import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;

public class Main {
    public static void main(String[] argv) throws Exception {
        byte[] seed = new byte[] { 34, 35, 36, 37, 37, 37, 67, 68, 69 };
        System.out.println(java.util.Arrays.toString(getRawKey(seed)));
    }/*  w  w  w  . ja v a 2 s .com*/

    private static byte[] getRawKey(byte[] seed) throws Exception {
        KeyGenerator kgen = KeyGenerator.getInstance("AES");
        SecureRandom sr = SecureRandom.getInstance("SHA1PRNG");
        sr.setSeed(seed);
        kgen.init(128, sr); // 192 and 256 bits may not be available
        SecretKey skey = kgen.generateKey();
        byte[] raw = skey.getEncoded();
        return raw;
    }
}

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