/// <summary>
/// 验证签名
/// </summary>
/// <param name="inputPara">通知返回参数数组</param>
/// <param name="sign">网关服务器生成的签名结果</param>
/// <returns>验证结果</returns>
public bool Verify(SortedDictionary <string, string> inputPara, string sign)
{
Dictionary <string, string> sPara = new Dictionary <string, string>();
//过滤空值、sign参数
sPara = Core.FilterPara(inputPara);
//获取待签名字符串
string preSignStr = Core.CreateLinkString(sPara);
//在待签名字符串中加入商户私钥KEY
preSignStr = preSignStr + "&key=" + _key;
//获得签名验证结果
bool isSgin = false;
isSgin = EpayEncrypt.Verify(preSignStr, sign);
return(isSgin);
}