package com.xy.jx.util;
import android.util.Log;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
/**
 * Created by xuxiang on 2017/6/10.
 */
public class FileAESUtil {
    /**
     * 加密用的Key 可以用26个字母和数字组成 此处使用AES-128-CBC加密模式，key需要为16位。
     **/
    private static String sKey = "写入您的加密key";//key，可自行修改
    private static String ivParameter = "写入您的偏移量";//偏移量,可自行修改
    /**
     * 算法/模式/填充
     **/
    private static final String CipherMode = "AES/CBC/PKCS5Padding";
    /**
     * 加密文件
     * @param readPath  源文件路径
     * @param writePath 加密后文件路径
     */
    public static void setAESFile(String readPath, String writePath) {
        File file = new File(readPath);
        if(!file.exists()) return;
        File writeFile = new File(wri

/**
 * 解密
 *
 * @param sSrc
 * @param key
 * @param ivs
 * @return
 */
public static String decrypt(String sSrc, String key, String ivs) {
    try {
        byte[] raw = key.getBytes("ASCII");
        SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
        Cipher cipher = Cipher.getInstance(CipherMode);
        IvParameterSpec iv = new IvParameterSpec(ivs.getBytes());
        cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv);
        byte[] encrypted1 = new BASE64Decoder().decodeBuffer(sSrc);// 先用base64解密
        byte[] original = cipher.doFinal(encrypted1);
        String originalString = new String(original, "utf-8");
        return originalString;
    } catch (Exception ex) {
        Log.e("AES", "解密异常：" + ex.getMessage());
        return null;
    }
}
/**
 * 加密
 *
 * @param encData
 * @param secretKey
 * @param vector
 * @return
 */
public static String Encrypt(String encData, String secretKey, String vector) {
    try {
        if (secretKey == null)