AES加密和解密

import javax.crypto.Cipher;import javax.crypto.spec.SecretKeySpec;import org.apache.commons.codec.binary.Base64;/** * * @author Administrator * */public class AES {    // 加密    public static String Encrypt(String sSrc, String sKey) throws Exception {        if (sKey == null) {            System.out.print("Key为空null");            return null;        }        // 判断Key是否为16位        if (sKey.length() != 16) {            System.out.print("Key长度不是16位");            return null;        }        byte[] raw = sKey.getBytes("utf-8");        SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");        Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");//"算法/模式/补码方式"        cipher.init(Cipher.ENCRYPT_MODE, skeySpec);        byte[] encrypted = cipher.doFinal(sSrc.getBytes("utf-8"));        return new Base64().encodeToString(encrypted);//此处使用BASE64做转码功能，同时能起到2次加密的作用。    }    // 解密    public static String Decrypt(String sSrc, String sKey) throws Exception {        try {            // 判断Key是否正确            if (sKey == null) {                System.out.print("Key为空null");                return null;            }            // 判断Key是否为16位            if (sKey.length() != 16) {                System.out.print("Key长度不是16位");                return null;            }            byte[] raw = sKey.getBytes("utf-8");            SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");            cipher.init(Cipher.DECRYPT_MODE, skeySpec);            byte[] encrypted1 = new Base64().decode(sSrc);//先用base64解密            try {                byte[] original = cipher.doFinal(encrypted1);                String originalString = new String(original,"utf-8");                return originalString;            } catch (Exception e) {                System.out.println(e.toString());                return null;            }        } catch (Exception ex) {            System.out.println(ex.toString());            return null;        }    }    public static void main(String[] args) throws Exception {        /*         * 此处使用AES-128-ECB加密模式，key需要为16位。         */        String cKey = "1234567890123456";        // 需要加密的字串        String cSrc = "www.gowhere.so";        System.out.println(cSrc);        // 加密        String enString = AES.Encrypt(cSrc, cKey);        System.out.println("加密后的字串是：" + enString);        // 解密        String DeString = AES.Decrypt(enString, cKey);        System.out.println("解密后的字串是：" + DeString);    }}

参考:http://www.cnblogs.com/chen-lhx/p/5817161.html