KeyGenerationExample.java

public class KeyGenerationExample {
    public generateSecretKey(String password, byte[] salt) {
        //get the PBKDF2 HMAC SHA1 secret key factory
        SecretKeyFactory secretKeyFactory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
        
        //similar to WPA2 key generation
        KeySpec keySpec = new PBEKeySpec(password.toCharArray(), salt, 4096, 32);
        
        //generate the key
        return secretKeyFactory.generateSecret(keySpec);
    }
    
    public byte[] generateSalt() {
        byte[] salt = new byte[32];
        (new SecureRandom()).nextBytes(salt);
        return salt;
    }
}