JAVA之MD5加密字节流再进行Base64编码

喜欢ヅ旅行 2024-04-17 14:26 43阅读 0赞

应用场景：待签名数据以UTF-8的格式转字节流，对字节流进行MD5算法得到的签名字节流，再经过Base64转换为字符串，即生成签名。

import java.security.MessageDigest;
    /**
     * 需要引入的共同jar包
     * apache-commons-codec-1.4.jar
     */
    import org.apache.commons.codec.binary.Base64;
    import java.util.Date;
    /**
     * 方式二，需要引入的jar包
     * sun.misc.BASE64Encoder.jar
     */
    import sun.misc.BASE64Encoder;
     
    /**
     * 文件名称: Md5.java
     * 功能说明:对字节流进行MD5算法处理，然后base64编码
     */
    public class Md5{
        public static void main(String[] args) throws Exception {    
        	//String timestamp = String.valueOf(new Date().getTime());//获取当前13位时间戳
            String timestamp="1566869002135";//模拟当前13位时间戳
            String charset="utf-8";//编码
            String secretKey="123456789";//模拟秘钥
            String Sign = doSin(timestamp, charset, secretKey);
            System.out.println(Sign);
            String Source = getSign(timestamp, charset, secretKey);
            System.out.println(Source);
        }
        /**
         * Base64.encodeBase64模式
         * @param timestamp
         * @param charset
         * @param secretKey
         * @return String 'DFZ16dpGQ3MQDttv2LHOmw=='
         * @throws Exception
         */
    	public static String doSin(String timestamp, String charset, String secretKey) throws Exception{
    		String sign ="";
    		String content = timestamp+secretKey;
    		try {
    			MessageDigest md = MessageDigest.getInstance( "MD5");
    			md.update(content.getBytes(charset));
    			sign = new String(Base64.encodeBase64(md.digest()),charset);
    		} catch (Exception e) {
    			throw new RuntimeException(e);
    		}
    		return sign;
    	 } 
    	/**
    	 * BASE64Encoder模式 
    	 * @param timestamp
    	 * @param charset
    	 * @param secretKey
    	 * @return String 'DFZ16dpGQ3MQDttv2LHOmw=='
    	 * @throws Exception
    	 */
    	public static String getSign(String timestamp, String charset, String secretKey) throws Exception{
    		String sign = "";
    		String content = timestamp+secretKey;
    		MessageDigest digest = MessageDigest.getInstance("MD5");
    		byte[] bts = digest.digest(content.getBytes(charset));
    		BASE64Encoder encoder = new BASE64Encoder();
    		sign = encoder.encode(bts);
    		return sign;
    	} 
    }

所需jar包下载地址：[https://download.csdn.net/download/netuser1937/11618341][https_download.csdn.net_download_netuser1937_11618341]  
JAVA与PHP相同加密结果  
参考PHP版：[https://blog.csdn.net/netuser1937/article/details/100097964][https_blog.csdn.net_netuser1937_article_details_100097964]

[https_download.csdn.net_download_netuser1937_11618341]: https://download.csdn.net/download/netuser1937/11618341
[https_blog.csdn.net_netuser1937_article_details_100097964]: https://blog.csdn.net/netuser1937/article/details/100097964