C# MD5加密

using System.Security.Cryptography;//MD5加密需引入的命名空间
/// <summary>
/// MD5加密
/// </summary>
/// <param name="strPwd">被加密的字符串</param>
/// <returns>返回加密后的字符串</returns>
public string MD5(string strPwd)
{
MD5 md5 = new MD5CryptoServiceProvider();
byte[] data = System.Text.Encoding.Default.GetBytes(strPwd);//将字符编码为一个字节序列
byte[] md5data = md5.ComputeHash(data);//计算data字节数组的哈希值
md5.Clear();
string str = "";
for (int i = 0; i <md5data.Length-1; i++)
{
str += md5data[i].ToString("x").PadLeft(2,'0');
}
return str;
}