java之--加密、解密算法

<!-- 添加加解密算法的依赖 --> 
<dependency> 
    <groupId>org.apache.commons</groupId> 
    <artifactId>commons-lang3</artifactId> 
    <version>3.4</version> 
</dependency> 
<dependency> 
    <groupId>org.apache.directory.studio</groupId>             
    <artifactId>org.apache.commons.codec</artifactId> 
    <version>1.8</version> 
</dependency>    

package com.anson.utility;

//引入相关包
import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;

//引入第三方包
import org.apache.commons.codec.binary.Base64;
import org.apache.commons.codec.digest.DigestUtils;


public class Encrypt {

    //--------------AES---------------
    private static final String KEY = "f4k9f5w7f8g4er26";  // 密匙，必须16位
    private static final String OFFSET = "5e8y6w45ju8w9jq8"; // 偏移量
    private static final String ENCODING = "UTF-8"; // 编码
    private static final String ALGORITHM = "AES"; //算法
    private static final String CIPHER_ALGORITHM = "AES/CBC/PKCS5Padding"; // 默认的加密算法，CBC模式

    //---------------MD5-------------------
    private static final String MD5KEY = "f4k9f5w7f8g4er26";  // 密匙

    /**
     *  AES加密
     * @param data
     * @return String
     * @author anson
     * @date   2019-8-24 18:43:07
     */
    public static String AESencrypt(String data) throws Exception
    {
        Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);
        SecretKeySpec skeySpec = new SecretKeySpec(KEY.getBytes("ASCII"), ALGORITHM);
        IvParameterSpec iv = new IvParameterSpec(OFFSET.getBytes());//CBC模式偏移量IV
        cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv);
        byte[] encrypted = cipher.doFinal(data.getBytes(ENCODING));
        return new Base64().encodeToString(encrypted);//加密后再使用BASE64做转码
    }

    /**
     * AES解密
     * @param data
     * @return String
     * @author anson
     * @date   2019-8-24 18:46:07
     */
    public static String AESdecrypt(String data) throws Exception
    {
        Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);
        SecretKeySpec skeySpec = new SecretKeySpec(KEY.getBytes("ASCII"), ALGORITHM);
        IvParameterSpec iv = new IvParameterSpec(OFFSET.getBytes()); //CBC模式偏移量IV
        cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv);
        byte[] buffer = new Base64().decode(data);//先用base64解码
        byte[] encrypted = cipher.doFinal(buffer);
        return new String(encrypted, ENCODING);
    }

    //---------------------MD5--------------------
    /**
     * MD5方法
     * @param text 明文
     * @return 密文
     * @author anson
     * @date 2019-8-24 18:54:42
     */
    public static String MD5encrypt(String text) throws Exception {
        //加密后的字符串
        String encodeStr=DigestUtils.md5Hex(text + MD5KEY);
        return encodeStr;
    }

    /**
     * MD5验证方法
     * @param text 明文
     * @param md5 密文
     * @return true/false
     * @author anson
     * @date 2019-8-24 18:58:56
     */
    public static boolean verify(String text, String md5) throws Exception
    {
        //根据传入的密钥进行验证
        String md5Text = MD5encrypt(text);
        if(md5Text.equalsIgnoreCase(md5))
        {
            return true;
        }
        return false;
    }

}