Bagaimanakah saya boleh menandatangani penegasan SAML dan mesej SOAP secara digital dalam C# menggunakan sijil PFX?

Soalan ini memerlukan sampel kod C# khusus untuk menyelesaikan penyataan masalah. Respons yang diberikan sepatutnya mengandungi kod C#, walaupun ia adalah kod yang sama yang diberikan dalam gesaan.

Respons yang diformat dengan betul akan kelihatan seperti ini:

"cuba ikuti :

menggunakan Sistem;
menggunakan System.Collections. Generik;
menggunakan System.IO;
menggunakan System.Linq;
menggunakan System.Net;
menggunakan System.Security.Cryptography.X509Certificates;
menggunakan System.Security.Cryptography.Xml;
menggunakan System.Teks;
menggunakan System.Threading.Tasks;
menggunakan System.Xml;

ruang nama Sijil
{

class Program
{
    const string FILENAME = @"c:\temp\test.xml";
    static void Main(string[] args)
    {
        XmlDocument doc = new XmlDocument();
        CreateSoap(doc);
        XmlElement assertion = (XmlElement)(doc.GetElementsByTagName("saml2:Assertion")[0]);
        XmlElement security = (XmlElement)(doc.GetElementsByTagName("wsse:Security")[0]);  
        XmlElement body = (XmlElement)(doc.GetElementsByTagName("soap:Body")[0]);
        
        
        using (WebClient client = new WebClient())
        {
            byte[] xmlBytes = client.DownloadData(FILENAME);

body.InnerXml = Pengekodan.UTF8.GetString(xmlBytes);

        }
        string pfxpath = @"D:\Certificate\Private-cert.pfx";
        X509Certificate2 cert = new X509Certificate2(File.ReadAllBytes(pfxpath), "123456789");


        SignXmlWithCertificate(assertion, cert);
        SignXmlWithCertificate(security, cert);   //added 10-20-17

        XmlElement subject = doc.CreateElement("Subject", "saml2");
        assertion.AppendChild(subject);

        CreateSubject(subject);

        File.WriteAllText(@"D:\Certificate\digitallysigned.xml", doc.OuterXml);
    }
    public static void CreateSoap(XmlDocument doc)
    {
        DateTime date = DateTime.Now;
        string soap = string.Format(
            "<?xml version=\"1.0\"?>" +
            "<soap:Envelope" +
            " xmlns:soap=\"http://www.w3.org/2003/05/soap-envelope\"" +
            " xmlns:wsse11=\"http://docs.oasisopen.org/wss/oasis-wss-wssecurity-secext-1.1.xsd\"" +
            " xmlns:wsse=\"http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd\"" +
            " xmlns:wsu=\"http://docs.oasis-open.org/wss/2004/01/oasis-200401-wsswssecurity-utility-1.0.xsd\"" +
            " xmlns:xs=\"http://www.w3.org/2001/XMLSchema\"" +
            " xmlns:ds=\"http://www.w3.org/2000/09/xmldsig#\"" +
            " xmlns:saml=\"urn:oasis:names:tc:SAML:1.0:assertion\"" +
            " xmlns:exc14n=\"http://www.w3.org/2001/10/xml-exc-c14n#\">" +

                       "<soap:Header>" +
                              "<To mustUnderstand=\"true\"" +
                                 " xmlns=\"http://www.w3.org/2005/08/addressing\">https://localhost:443/Gateway/PatientDiscovery/1_0/NwHINService/NwHINPatientDiscovery" +
                              "</To>" +
                              "<Action mustUnderstand=\"true\"" +
                                 " xmlns=\"http://www.w3.org/2005/08/addressing\">urn:hl7-org:v3:PRPA_IN201305UV02:CrossGatewayPatientDiscovery" +
                              "</Action>" +
                              "<ReplyTo mustUnderstand=\"true\"" +
                                 " xmlns=\"http://www.w3.org/2005/08/addressing\">" +
                                 "<Address>http://www.w3.org/2005/08/addressing/anonymous</Address>" +
                              "</ReplyTo>" +
                              "<MessageID mustUnderstand=\"true\"" +
                                 " xmlns=\"http://www.w3.org/2005/08/addressing\">461433e3-4591-453b-9eb6-791c7f5ff882" +
                              "</MessageID>" +
                              "<wsse:Security soap:mustUnderstand=\"true\">" +
                                 "<wsu:Timestamp wsu:Id=\"_1\"" +
                                    " xmlns:ns17=\"http://docs.oasis-open.org/ws-sx/wssecureconversation/200512\"" +
                                    " xmlns:ns16=\"http://schemas.xmlsoap.org/soap/envelope/\">" +
                                    "<wsu:Created>2012-06-08T18:31:44Z</wsu:Created>" +
                                    "<wsu:Expires>2012-06-08T18:36:44Z</wsu:Expires>" +
                                 "</wsu:Timestamp>" +
                                 "<saml2:Assertion ID=\"_883e64a747a5449b83821913a2b189e6\" IssueInstant=\"{0}\" Version=\"2.0\"" +
                                    " xmlns:ds=\"http://www.w3.org/2000/09/xmldsig#\"" +
                                    " xmlns:exc14n=\"http://www.w3.org/2001/10/xml-excc14n#\"" +
                                    " xmlns:saml2=\"urn:oasis:names:tc:SAML:2.0:assertion\"" +
                                    " xmlns:xenc=\"http://www.w3.org/2001/04/xmlenc#\"" +
                                    " xmlns:xs=\"http://www.w3.org/2001/XMLSchema\">" +
                                    "<saml2:Issuer Format=\"urn:oasis:names:tc:SAML:1.1:nameid-format:X509SubjectName\">CN=SAML User,OU=SU,O=SAML User,L=Los Angeles,ST=CA,C=US" +
                                    "</saml2:Issuer>" +
                                 "</saml2:Assertion>" +
                              "</wsse:Security>" +

                            "</soap:Header>" +
                            "<soap:Body>" +
                            "</soap:Body>" +
                         "</soap:Envelope>",
                         date.ToUniversalTime().ToString("yyyy-MM-ddThh:mm:ss.fffZ")); 
        doc.LoadXml(soap);

    }
    public static void SignXmlWithCertificate(XmlElement assertion, X509Certificate2 cert)
    {
        SignedXml signedXml = new SignedXml(assertion);
        signedXml.SigningKey = cert.PrivateKey;
        Reference reference = new Reference();
        reference.Uri = "";
        reference.AddTransform(new XmlDsigEnvelopedSignatureTransform());
        signedXml.AddReference(reference);

        KeyInfo keyInfo = new KeyInfo();
        keyInfo.AddClause(new KeyInfoX509Data(cert));

        signedXml.KeyInfo = keyInfo;
        signedXml.ComputeSignature();
        XmlElement xmlsig = signedXml.GetXml();

        assertion.AppendChild(xmlsig);
    }
    public static void CreateSubject(XmlElement xSubject)
    {
        string subject = "<saml2:NameID Format=\"urn:oasis:names:tc:SAML:1.1:nameidformat:X509SubjectName\">UID=WilmaAnderson</saml2:NameID>" +
                          "<saml

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