Android Key Create generateKey(byte[] seed)

Description

generate Key

License

Open Source License

Declaration

public static byte[] generateKey(byte[] seed) throws Exception 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.security.SecureRandom;

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

public class Main {
    private static final String CIPHER_ALGORITHM = "AES";
    private static final String RANDOM_GENERATOR_ALGORITHM = "SHA1PRNG";
    private static final int RANDOM_KEY_SIZE = 128;

    public static byte[] generateKey(byte[] seed) throws Exception {
        KeyGenerator keyGenerator = KeyGenerator
                .getInstance(CIPHER_ALGORITHM);
        SecureRandom secureRandom = SecureRandom
                .getInstance(RANDOM_GENERATOR_ALGORITHM);
        secureRandom.setSeed(seed);/*w  w  w .j a  v  a2  s .  com*/
        keyGenerator.init(RANDOM_KEY_SIZE, secureRandom);
        SecretKey secretKey = keyGenerator.generateKey();
        return secretKey.getEncoded();
    }
}

Related

1. generateKey(String key)
2. generateKey(byte[] randomSeed)
3. getRawKey(byte[] seed)
4. getRawKey(byte[] seed)
5. createRandomKey(int size)
6. generateKey(char[] passphraseOrPin, byte[] salt)
7. generateKey(char[] passphraseOrPin, byte[] salt)
8. generateMacSecret()
9. getKey(String keyRule)