C#MD5加密

using System.Security.Cryptography;
/// <summary>
/// 返回加密的字符串
/// </summary>
/// <param name="strPwd">加密信息</param>
/// <returns></returns>
public string Encrypt(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;
}