decode AES Key - Android java.security

Android examples for java.security:AES

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Description

decode AES Key

Demo Code


//package com.java2s;
import android.util.Base64;
import javax.crypto.Cipher;

import javax.crypto.spec.SecretKeySpec;
import java.io.*;

public class Main {
    public static String decodeKey(String key) throws Exception {
        SecretKeySpec skeySpec = new SecretKeySpec(getCryptoStringKey(),
                "AES");
        Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
        cipher.init(Cipher.DECRYPT_MODE, skeySpec);
        byte[] keyBytes = Base64.decode(key, Base64.DEFAULT);
        return new String(cipher.doFinal(keyBytes), "UTF-8");
    }//  w w w .jav a 2  s. co  m

    private static byte[] getCryptoStringKey() {
        //  byte[] key = new byte[16];
        try {
            return ("d12Vp54R4sb0ymVF").getBytes("UTF-8");
        } catch (UnsupportedEncodingException x) {
            throw new RuntimeException(x);
        }
    }
}

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