package com.Base64;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class Md5Utils {
    
    public static String md5(String sourceStr) {
        String result = "";
        try {
            MessageDigest md = MessageDigest.getInstance("MD5");
            md.update(sourceStr.getBytes());
            byte b[] = md.digest();
            int i;
            StringBuffer buf = new StringBuffer("");
            for (int offset = 0; offset < b.length; offset++) {
                i = b[offset];
                if (i < 0)
                    i += 256;
                if (i < 16)
                    buf.append("0");
                buf.append(Integer.toHexString(i));
            }
            result = buf.toString();
//            System.out.println("MD5(" + sourceStr + ",32) = " + result);
         //   System.out.println("MD5(" + sourceStr + ",16) = " + buf.toString().substring(8, 24));
        } catch (NoSuchAlgorithmException e) {
//            System.out.println(e);
        }
        return result;
    }
    
    public static void main(String[] args) {
        String md5Str = md5("123456");
        System.out.println(md5Str);
    }
}

package com.Base64;

import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;

public class HMACSHA256 {

    /**
     * 将加密后的字节数组转换成字符串
     *
     * @param b 字节数组
     * @return 字符串
     */
    public  static String byteArrayToHexString(byte[] b) {
        StringBuilder hs = new StringBuilder();
        String stmp;
        for (int n = 0; b!=null && n < b.length; n++) {
            stmp = Integer.toHexString(b[n] & 0XFF);
            if (stmp.length() == 1)
                hs.append('0');
            hs.append(stmp);
        }
        return hs.toString().toLowerCase();
    }
    /**
     * sha256_HMAC加密
     * @param message 消息
     * @param secret  秘钥
     * @return 加密后字符串
     */
    public static String sha256_HMAC(String message, String secret) {
        String hash = "";
        try {
            Mac sha256_HMAC = Mac.getInstance("HmacSHA256");
            SecretKeySpec secret_key = new SecretKeySpec(secret.getBytes(), "HmacSHA256");
            sha256_HMAC.init(secret_key);
            byte[] bytes = sha256_HMAC.doFinal(message.getBytes());
            hash = byteArrayToHexString(bytes);
        } catch (Exception e) {
            System.out.println("Error HmacSHA256 ===========" + e.getMessage());
        }
        return hash;
    }
    
    public static void main(String[] args) {
        String data = sha256_HMAC("123", "abc");
        System.out.println(data);
    }

}

import com.Base64.*;
//1.测试通过MD5进行加密
String md5Str = Md5Utils.md5("123456"); 
vars.put("loginPwd",md5Str);   //把加密后的内容赋值给到loginPwd变量
log.info(md5Str);
//2.测试通过HMACSHA256进行加密
HMACSHA256 psSha256 = new HMACSHA256();
//调用HMACSHA256类的sha256_HMAC方法，进行hmacsha256加密
//通过abc秘钥对密码123456进行加密
String psStr=psSha256.sha256_HMAC("123456","abc");
log.info(psStr);