java加密

对方的java版本：16进制后的字符串（假的MD5）

 public class mdencode {
     public mdencode() {
     }

     public String testDigest(String myinfo) {
         byte[] digesta = null;
         try {
             java.security.MessageDigest alga = java.security.MessageDigest.
                     getInstance("MD5");
             alga.update(myinfo.getBytes());
             digesta = alga.digest();

         }
         catch (java.security.NoSuchAlgorithmException ex) {
             System.out.println("非法摘要算法");
         }
         return this.byte2hex(digesta);
     }

     public String byte2hex(byte[] b) { //二行制转字符串
         String hs = "";
         String stmp = "";
         for (int n = 0; n < b.length; n++) {
             stmp = (java.lang.Integer.toHexString(b[n] & 0XFF));
             if (stmp.length() == 1) {
                 hs = hs + "0" + stmp;
             } else {
                 hs = hs + stmp;
             }
             if (n < b.length - 1) {
                 hs = hs;
             }
         }
         return hs;
     }

 }

 

和对方对接写的方法：16进制后的字符串（加的MD5）

 /// <summary>
         /// 加密
         /// </summary>
         /// <param name="bytes"></param>
         /// <returns></returns>
         private string getMd5Hash(byte[] bytes)
         {
             MD5 md5Hasher = MD5.Create();
             byte[] data = md5Hasher.ComputeHash(bytes);
             StringBuilder sBuilder = new StringBuilder();
             for (int i = 0; i < data.Length; i++)
             {
                 sBuilder.Append(data[i].ToString("x2"));
             }
             return sBuilder.ToString();
         }

 

 

到此 大功告成。。。