JAVA-AESCB加密

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package ***;import javax.crypto.Cipher;import javax.crypto.spec.IvParameterSpec;import javax.crypto.spec.SecretKeySpec;import sun.misc.BASE64Decoder;import sun.misc.BASE64Encoder;/*** AES 是一种可逆加密算法，对用户的敏感信息加密处理* 对原始数据进行AES加密后，在进行Base64编码转化；* 正确*/public class AesCBC {/*已确认* 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="1234567890123456";    private static String ivParameter="1234567890123456";    private static AesCBC instance=null;    //private static     private AesCBC(){    }    public static AesCBC getInstance(){        if (instance==null)            instance= new AesCBC();        return instance;    }    // 加密    public String encrypt(String sSrc, String encodingFormat, String sKey, String ivParameter) throws Exception {        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");        byte[] raw = sKey.getBytes();        SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");        IvParameterSpec iv = new IvParameterSpec(ivParameter.getBytes());//使用CBC模式，需要一个向量iv，可增加加密算法的强度        cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv);        byte[] encrypted = cipher.doFinal(sSrc.getBytes(encodingFormat));        return new BASE64Encoder().encode(encrypted);//此处使用BASE64做转码。}    // 解密    public String decrypt(String sSrc, String encodingFormat, String sKey, String ivParameter) throws Exception {        try {            byte[] raw = sKey.getBytes("ASCII");            SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");            IvParameterSpec iv = new IvParameterSpec(ivParameter.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,encodingFormat);            return originalString;        } catch (Exception ex) {            return null;        }}    public static void main(String[] args) throws Exception {        // 需要加密的字串        String cSrc = "123456";        System.out.println("加密前的字串是："+cSrc);        // 加密        String enString = AesCBC.getInstance().encrypt(cSrc,"utf-8",sKey,ivParameter);        System.out.println("加密后的字串是："+ enString);                System.out.println("1jdzWuniG6UMtoa3T6uNLA==".equals(enString));                // 解密        String DeString = AesCBC.getInstance().decrypt(enString,"utf-8",sKey,ivParameter);        System.out.println("解密后的字串是：" + DeString);    }}
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