Md5帮助类(Md5Helper.cs)
1 using System;
2 using System.Security.Cryptography;
3 using System.Text;
4
5 namespace Sam.OA.Common
6 {
7 /// <summary>
8 /// Md5帮助类
9 /// </summary>
10 public class Md5Helper
11 {
12 /// <summary>
13 /// 对字符串进行Md5运算，不可逆
14 /// </summary>
15 /// <param name="str">加密字符串</param>
16 /// <returns></returns>
17 public static string GetMd5String(string str)
18 {
19 try
20 {
21 MD5 md5 = MD5.Create();
22 byte[] buffer = Encoding.UTF8.GetBytes(str);
23 byte[] md5Buffer = md5.ComputeHash(buffer);
24 StringBuilder sb = new StringBuilder();
25 foreach (byte b in md5Buffer)
26 {
27 sb.Append(b.ToString("x2"));
28 }
29 md5.Clear();
30 return sb.ToString();
31 }
32 catch (Exception ex)
33 {
34 throw ex;
35 }
36 }
37 }
38 }
