/// <summary>
/// Antragstellung
/// </summary>
/// <param name="application">Antrag</param>
/// <param name="certStore">Zertifikat-Speicher für die Ermittlung der Zertifikatskette des Absender-Zertifikats</param>
/// <param name="pfx">Absender-Zertifikat für die Signierung des Antrags</param>
/// <returns>Ergebnis der Antragstellung</returns>
public async Task<OstcApplicationResult> SendApplicationAsync([NotNull] OstcAntrag application, [CanBeNull] IOstcCertificateStore certStore, [CanBeNull] Pkcs12Store pfx)
{
var now = DateTime.Now;
application.Antragsteller.IK_BN = Sender.SenderId.ToString();
RsaPrivateCrtKeyParameters rsaPrivateKey;
AsymmetricCipherKeyPair rsaKeyPair;
X509Certificate certificate;
if (pfx != null)
{
var alias = pfx.Aliases.Cast<string>().First(pfx.IsKeyEntry);
rsaPrivateKey = (RsaPrivateCrtKeyParameters)pfx.GetKey(alias).Key;
var rsaPublicKey = new RsaKeyParameters(false, rsaPrivateKey.Modulus, rsaPrivateKey.PublicExponent);
rsaKeyPair = new AsymmetricCipherKeyPair(rsaPublicKey, rsaPrivateKey);
certificate = pfx.GetCertificate(alias).Certificate;
}
else
{
var keyPairGen = new RsaKeyPairGenerator();
keyPairGen.Init(new KeyGenerationParameters(new SecureRandom(), 2048));
rsaKeyPair = keyPairGen.GenerateKeyPair();
rsaPrivateKey = (RsaPrivateCrtKeyParameters)rsaKeyPair.Private;
certificate = null;
}
var requester = new Requester(application.Antragsteller.IK_BN, application.Antragsteller.Firma, application.Antragsteller.Nachname);
var p10Creator = new Pkcs10Creator(requester, rsaKeyPair);
var p10Data = p10Creator.CreateRequest();
application.Antragsinfo.Requestschlüssel = p10Data.CertRequestDer;
var applicationData = OstcUtils.Serialize(application, Iso88591);
ValidateData(applicationData, OstcMessageType.ApplicationData);
var receiver = Sender.SenderId.CommunicationServerReceiver;
if (certificate != null)
{
Debug.Assert(certStore != null, "certStore != null");
var certChain = certStore.GetChain(certificate).ToList();
Debug.Assert(certChain[0].SubjectDN.Equivalent(certificate.SubjectDN));
certChain.RemoveAt(0);
applicationData = OstcUtils.SignData(applicationData, rsaPrivateKey, certificate, certChain);
var receiverCert = certStore.GetCertificate(receiver);
applicationData = OstcUtils.EncryptData(applicationData, receiverCert);
}
var fileName = $"{application.Antragsteller.IK_BN}_{now.Date:ddMMyyyy}.xml";
var message = new TransportRequestType()
{
version = SupportedVersionsType.Item11,
profile = ExtraProfileOstc,
TransportHeader = CreateRequestHeader(now, OstcDataType.Application, ExtraScenario.RequestWithAcknowledgement),
TransportBody = new TransportRequestBodyType
{
Items = new object[]
{
new DataType
{
Item = new Base64CharSequenceType()
{
Value = applicationData,
},
},
},
},
};
if (certificate != null)
{
message.TransportPlugIns = new AnyPlugInContainerType
{
Items = new object[]
{
new DataTransformsType
{
version = "1.1",
Encryption = new[]
{
new EncryptionType
{
order = "1",
Algorithm = new EncryptionAlgorithmType
{
id = ExtraEncryption.Pkcs7,
Specification = new SpecificationType
{
url = "http://www.gkv-datenaustausch.de",
name = "Security-Schnittstelle fuer den Datenaustausch im Gesundheitswesen",
},
},
},
},
},
new DataSourceType
{
version = "1.1",
DataContainer = new DataContainerType
{
type = ExtraContainerType.File,
name = fileName,
created = now,
createdSpecified = true,
encoding = ExtraContainerEncoding.Utf8,
}
},
},
};
}
ValidateRequest(message, OstcMessageType.Application);
var messageData = OstcExtraSerializer.Iso88591.Serialize(message);
var request = CreateRequest(Network.Requests.Application);
using (var requestStream = await Task.Factory.FromAsync(request.BeginGetRequestStream, request.EndGetRequestStream, null))
{
requestStream.Write(messageData, 0, messageData.Length);
}
using (var response = await Task.Factory.FromAsync(request.BeginGetResponse, request.EndGetResponse, null))
{
var serializer = new XmlSerializer(typeof(TransportResponseType));
var responseData = (TransportResponseType)serializer.Deserialize(response.GetResponseStream());
var flags = responseData.TransportHeader.GetFlags().ToList();
if (flags.Any(x => x.weight == ExtraFlagWeight.Error))
throw new Ostc2Exception(flags);
return new OstcApplicationResult
{
OrderId = responseData.TransportHeader.ResponseDetails.ResponseID.Value,
Pkcs10 = p10Data.CertRequestDer,
RSA = rsaPrivateKey,
Hash = p10Data.PublicKeyHashRaw,
};
}
}
/// <summary>
/// Konstruktor
/// </summary>
/// <param name="requester">Antragsteller</param>
/// <param name="rsaPrivateKey">RSA-Schlüssel</param>
public Pkcs10Creator(Requester requester, RsaPrivateCrtKeyParameters rsaPrivateKey)
{
Requester = requester;
var rsaPublicKey = new RsaKeyParameters(false, rsaPrivateKey.Modulus, rsaPrivateKey.PublicExponent);
RSA = new AsymmetricCipherKeyPair(rsaPublicKey, rsaPrivateKey);
}
