/// <summary>
/// 检查签名
/// </summary>
/// <param name="xml"></param>
/// <param name="key"></param>
/// <returns></returns>
public static bool CheckSign(string xml, string key)
{
XElement root = XElement.Parse(xml);
var eles = root.Elements();
string sign = null;
AsciiSortedDictionary <string> keyValues = new AsciiSortedDictionary <string>();
foreach (var item in eles)
{
if (!"sign".Equals(item.Name.LocalName, StringComparison.OrdinalIgnoreCase) && !string.IsNullOrEmpty(item.Value))
{
keyValues.Add(item.Name.LocalName, item.Value);
}
else if ("sign".Equals(item.Name.LocalName, StringComparison.OrdinalIgnoreCase))
{
sign = item.Value;
}
}
StringBuilder builder = new StringBuilder();
keyValues.Aggregate(builder, (b, kv) => b.Append(kv.Key).Append("=").Append(kv.Value).Append("&"));
builder.Append("key=").Append(key);
Debug.WriteLine(builder.ToString());
string mSign = MD5.Encode(builder.ToString());
return(mSign.Equals(sign, StringComparison.OrdinalIgnoreCase));
}
