/// <summary>
/// 加密字符串 密钥为系统默认
/// </summary>
/// <param name="inputStr">输入字符串</param>
/// <returns>输出加密后字符串</returns>
public static string SEncryptString(string inputStr)
{
YtSecurity ws = new YtSecurity();
return ws.EncryptString(inputStr, "");
}