Добрый день! Столкнулся с проблемой при проверке ЭЦП.
Реализация через WCF клиент. Не могу найти место, в котором ломается подпись :(
/// <summary>
/// Сериализатор для класса с данными MessagePrimaryContent
/// </summary>
private static readonly XmlSerializer MessagePrimaryContentSerializer =
new XmlSerializer(typeof(EgrulEgripGetChangesRequest));
/// <summary>
/// Сериализатор для
/// </summary>
private static readonly XmlSerializer SenderProvidedRequestDataSerializer =
new XmlSerializer(typeof(SenderProvidedRequestData));
public static void Start()
{
var request = CreateRequest();
var client = new Smev_1_2.SMEVMessageExchangePortTypeClient();
var response = client.SendRequest(request,
SignXml(SerializeSenderProvidedRequestData(request), "SIGNED_BY_CONSUMER"),
out _);
}
private static SenderProvidedRequestData CreateRequest()
{
return new SenderProvidedRequestData
{
MessageID = GuidGenerator.GenerateTimeBasedGuid().ToString(),
Id = "SIGNED_BY_CONSUMER",
//Заполняет как сериализованне данные класса
MessagePrimaryContent = SerializeMessagePrimaryContent(new EgrulEgripGetChangesRequest
{
Date = "25.11.2019",
ReestrType = EgrupEgripReestType.Company
})
};
}
/// <summary>
/// Сериализация данных класса MessagePrimaryContent
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
private static XmlElement SerializeMessagePrimaryContent(EgrulEgripGetChangesRequest request)
{
using (var stringWriter = new StringWriter())
using (var xmlWriter = XmlWriter.Create(stringWriter, new XmlWriterSettings { OmitXmlDeclaration = true }))
{
MessagePrimaryContentSerializer.Serialize(xmlWriter, request);
xmlWriter.Flush();
stringWriter.Flush();
XmlDocument doc = new XmlDocument
{
PreserveWhitespace = true
};
doc.LoadXml(stringWriter.GetStringBuilder().ToString());
return doc.DocumentElement;
}
}
/// <summary>
/// Сериализация замого SenderProvidedRequestData
/// </summary>
/// <param name="requestData"></param>
/// <returns></returns>
private static XmlDocument SerializeSenderProvidedRequestData(
SenderProvidedRequestData requestData)
{
using (var stringWriter = new StringWriter())
using (var xmlWriter = XmlWriter.Create(stringWriter, new XmlWriterSettings { OmitXmlDeclaration = true}))
{
SenderProvidedRequestDataSerializer.Serialize(xmlWriter, requestData);
xmlWriter.Flush();
stringWriter.Flush();
XmlDocument doc = new XmlDocument
{
PreserveWhitespace = true
};
doc.LoadXml(stringWriter.GetStringBuilder().ToString());
return doc;
}
}
/// <summary>
/// Метод подписи XML
/// </summary>
/// <param name="data"></param>
/// <param name="uri"></param>
/// <returns></returns>
public static XmlElement SignXml(XmlDocument data, string uri)
{
var store = new X509Store(StoreLocation.CurrentUser);
store.Open(OpenFlags.OpenExistingOnly | OpenFlags.ReadOnly);
var certs = store.Certificates.Find(X509FindType.FindBySerialNumber,
SerialNumber, false);
if (certs.Count == 0)
{
Console.WriteLine("No certs");
throw new Exception("No certs");
}
var reference = new Reference
{
Uri = "#" + uri,
DigestMethod = CPSignedXml.XmlDsigGost3411_2012_256Url
};
reference.AddTransform(new XmlDsigExcC14NTransform());
reference.AddTransform(new XmlDsigSmevTransform());
var signedXml = new SignedXml(data) { SigningKey = certs[0].PrivateKey };
signedXml.SafeCanonicalizationMethods.Add("urn://smev-gov-ru/xmldsig/transform");
signedXml.AddReference(reference);
var keyInfo = new KeyInfo();
keyInfo.AddClause(new KeyInfoX509Data(certs[0]));
signedXml.KeyInfo = keyInfo;
signedXml.SignedInfo.CanonicalizationMethod = SignedXml.XmlDsigExcC14NTransformUrl;
signedXml.SignedInfo.SignatureMethod = CPSignedXml.XmlDsigGost3410_2012_256Url;
signedXml.ComputeSignature();
if (!signedXml.CheckSignature()) //Проверка проходит, всё ок
throw new Exception("Подпись не прошла проверк");
return signedXml.GetXml();
}
Есть подозрение, что дело в сериализации которую использует WCF перед транспортировкой.
