import android.text.TextUtils;
import android.util.Base64;

import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;

/**
 * describe: AES加密算法
 */

public class AesUtils {

    /**
     * 加密
     */
    public static String Encrypt(String text) {
        if (TextUtils.isEmpty(text)) {
            return text;
        }
        try {
            byte[] result = encrypt("your key", text);
            return new String(Base64.encode(result, Base64.DEFAULT));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    /**
    *解密
    */
    public static String Decrypt(String text) {
        try {
            byte[] result = decrypt(Base64.decode(text, Base64.DEFAULT), "your key")
            return new String(result);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    private static byte[] encrypt(String key, String text) throws Exception {
        // 创建AES秘钥
        SecretKeySpec secretKeySpec = new SecretKeySpec(key.getBytes(), "AES");
        // 创建密码器
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5PADDING");
        // 初始化加密器
        cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec);
        // 加密
        return cipher.doFinal(text.getBytes("UTF-8"));
    }

    private static byte[] decrypt(byte[] content, String key) throws Exception {
        // 创建AES秘钥
        SecretKeySpec key = new SecretKeySpec(key.getBytes(), "AES");
        // 创建密码器
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5PADDING");
        // 初始化解密器
        cipher.init(Cipher.DECRYPT_MODE, key);
        // 解密
        return cipher.doFinal(content);
    }

}