asp.net MD5加密函数，c#

/// <summary>

/// 用md5加密

/// </summary>

/// <param name="Sourcein">输入的数据</param>

/// <returns></returns>

public static string MD5(string Sourcein)

{

MD5CryptoServiceProvider MD5CSP = new MD5CryptoServiceProvider();

byte[] MD5Source = System.Text.Encoding.UTF8.GetBytes(Sourcein);

byte[] MD5Out = MD5CSP.ComputeHash(MD5Source);

return Convert.ToBase64String(MD5Out);

}