/// <summary>
/// 签名
/// </summary>
/// <param name="keyValuePairs"></param>
/// <param name="ts"></param>
/// <returns></returns>
private string GetSign(Dictionary <string, string> keyValuePairs, string ts)
{
keyValuePairs.Add("Gateway-Request-Time", ts);
keyValuePairs = AsciiDictionary(keyValuePairs);
StringBuilder builder = new StringBuilder();
builder.Append(Config.Secret);
foreach (var item in keyValuePairs)
{
builder.Append(item.Key).Append(item.Value);
}
builder.Append(Config.Secret);
return(MD5Hash.GetMd5(builder.ToString()));
}