MD5加盐值加密工具类

迈不过友情╰ 2022-05-18 11:13 345阅读 0赞

util/MD5Util.java

package com.mmall.util;
    import java.security.MessageDigest;
    
    /**
     * Created by name
     */
    public class MD5Util {
    
        private static String byteArrayToHexString(byte b[]) {
            StringBuffer resultSb = new StringBuffer();
            for (int i = 0; i < b.length; i++)
                resultSb.append(byteToHexString(b[i]));
    
            return resultSb.toString();
        }
    
        private static String byteToHexString(byte b) {
            int n = b;
            if (n < 0)
                n += 256;
            int d1 = n / 16;
            int d2 = n % 16;
            return hexDigits[d1] + hexDigits[d2];
        }
    
        /**
         * 返回大写MD5
         *
         * @param origin
         * @param charsetname
         * @return
         */
        private static String MD5Encode(String origin, String charsetname) {
            String resultString = null;
            try {
                resultString = new String(origin);
                MessageDigest md = MessageDigest.getInstance("MD5");
                if (charsetname == null || "".equals(charsetname))
                    resultString = byteArrayToHexString(md.digest(resultString.getBytes()));
                else
                    resultString = byteArrayToHexString(md.digest(resultString.getBytes(charsetname)));
            } catch (Exception exception) {
            }
            return resultString.toUpperCase();
        }
    
        public static String MD5EncodeUtf8(String origin) {
            origin = origin + PropertiesUtil.getProperty("password.salt", "");
            return MD5Encode(origin, "utf-8");
        }
    
    
        private static final String hexDigits[] = {"0", "1", "2", "3", "4", "5",
                "6", "7", "8", "9", "a", "b", "c", "d", "e", "f"};
    
    }

resources/mmall.properties

password.salt = geelysdafaqj23ou89ZXcj@#$@#$#@KJdjklj;D../dSF.,