- using System;
- using System.Text;
- using System.Security.Cryptography;
- namespace Common
- {
- /// <summary>
- /// 一个实现MD5散列字符串的类
- /// 作者:周公
- /// 日期:2007
- /// </summary>
- public sealed class MD5Hashing
- {
- private static MD5 md5 = MD5.Create();
- //私有化构造函数
- private MD5Hashing()
- {
- }
- /// <summary>
- /// 使用utf8编码将字符串散列
- /// </summary>
- /// <param name="sourceString">要散列的字符串</param>
- /// <returns>散列后的字符串</returns>
- public static string HashString(string sourceString)
- {
- return HashString(Encoding.UTF8, sourceString);
- }
- /// <summary>
- /// 使用指定的编码将字符串散列
- /// </summary>
- /// <param name="encode">编码</param>
- /// <param name="sourceString">要散列的字符串</param>
- /// <returns>散列后的字符串</returns>
- public static string HashString(Encoding encode, string sourceString)
- {
- byte[] source = md5.ComputeHash(encode.GetBytes(sourceString));
- StringBuilder sBuilder = new StringBuilder();
- for (int i = 0; i < source.Length; i++)
- {
- sBuilder.Append(source[i].ToString("x2"));
- }
- return sBuilder.ToString();
- }
- }
- }