public Task <T> ExecuteAsync <T>(string body, WeChatPayOptions options) where T : WeChatPayNotify
{
if (string.IsNullOrEmpty(body))
{
throw new ArgumentNullException(nameof(body));
}
if (options == null)
{
throw new ArgumentNullException(nameof(options));
}
if (string.IsNullOrEmpty(options.Key))
{
throw new ArgumentNullException(nameof(options.Key));
}
var parser = new WeChatPayNotifyXmlParser <T>();
var notify = parser.Parse(body);
if (notify is Notify.WeChatPayRefundNotify)
{
var key = MD5.Compute(options.Key).ToLowerInvariant();
var data = AesHelper.Decrypt((notify as Notify.WeChatPayRefundNotify).ReqInfo, key); //todo PKCS7 Encrypt
notify = parser.Parse(body, data);
}
else
{
CheckNotifySign(notify, options);
}
return(Task.FromResult(notify));
}
/// <summary>
/// 计算指定证书的序列号
/// </summary>
/// <param name="certificate">证书</param>
public static string GetCertSN(X509Certificate2 certificate)
{
// 删除逗号后面的空格
var issuer = certificate.Issuer.ToString().Replace(", ", ",");
//提取出的证书的issuerDN本身是以CN开头的，则无需逆序，直接返回
if (issuer.StartsWith("CN", StringComparison.Ordinal))
{
return(MD5.Compute(issuer + BigInteger.Parse(certificate.SerialNumber, NumberStyles.HexNumber).ToString()).ToLowerInvariant());
}
else
{
var attributes = issuer.Split(',').ToList();
attributes.Reverse();
return(MD5.Compute(string.Join(",", attributes.ToArray()) + BigInteger.Parse(certificate.SerialNumber, NumberStyles.HexNumber).ToString()).ToLowerInvariant());
}
}
