c# MD5加密实现

/// <summary>
///     返回MD5
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public string Md5(string input)
{
MD5 md5Hash = MD5.Create();
byte[] data = md5Hash.ComputeHash(Encoding.UTF8.GetBytes(input));

StringBuilder sBuilder = new StringBuilder();

for (int i = 0; i < data.Length; i++)
{
sBuilder.Append(data[i].ToString("x2"));
}

return sBuilder.ToString();
}