(C#) Sign SOAP XML for New Zealand Customs Service

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Demonstrates how to create an XAdES signed SOAP XML pertaining to the New Zealand Customs Service.

Note: This example requires Chilkat v9.5.0.96 or later.

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// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

bool success = true;

// Create the following XML to be signed:

// <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
//     xmlns:v1="http://customs.govt.nz/jbms/msggate/reqresp/v1">
//     <soapenv:Header>
//         <wsse:Security soapenv:mustUnderstand="1"
//             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-wss-wssecurity-utility-1.0.xsd">
//             <wsu:Timestamp wsu:Id="TS-037E78514E9B9132CB16817563559151">
//                 <wsu:Created>2023-04-17T18:32:35.913Z</wsu:Created>
//                 <wsu:Expires>2023-04-17T19:32:35.913Z</wsu:Expires>
//             </wsu:Timestamp>
//         </wsse:Security>
//     </soapenv:Header>
//     <soapenv:Body wsu:Id="id-8"
//         xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">
//         <v1:RequestResponse>
//             <v1:Submitter>TEST1234</v1:Submitter>
//             <v1:MailboxMsgId>999999</v1:MailboxMsgId>
//         </v1:RequestResponse>
//     </soapenv:Body>
// </soapenv:Envelope>

// Create a random ID like this: TS-037E78514E9B9132CB16817563559151
Chilkat.StringBuilder tsId = new Chilkat.StringBuilder();
tsId.Append("TS-");
tsId.AppendRandom(16,"hex");

// STR-037E78514E9B9132CB16817563559614
Chilkat.StringBuilder strId = new Chilkat.StringBuilder();
strId.Append("STR-");
strId.AppendRandom(16,"hex");

// KI-037E78514E9B9132CB16817563559583
Chilkat.StringBuilder keyInfoId = new Chilkat.StringBuilder();
keyInfoId.Append("KI-");
keyInfoId.AppendRandom(16,"hex");

// Create a date/time for the current time with this format:  2023-04-17T18:32:35.913Z
Chilkat.CkDateTime dt = new Chilkat.CkDateTime();
dt.SetFromCurrentSystemTime();

Chilkat.StringBuilder sbNow = new Chilkat.StringBuilder();
sbNow.Append(dt.GetAsTimestamp(false));
// If we really need the milliseconds, we can replace the "Z" with ".000Z"
// The server will also likely accept a timestamp without milliseconds, such as 2023-04-17T18:32:35Z
int n = sbNow.Replace("Z",".000Z");

Chilkat.StringBuilder sbNowPlusOneHour = new Chilkat.StringBuilder();
dt.AddSeconds(3600);
sbNowPlusOneHour.Append(dt.GetAsTimestamp(false));
n = sbNowPlusOneHour.Replace("Z",".000Z");

Chilkat.Xml xmlToSign = new Chilkat.Xml();
xmlToSign.Tag = "soapenv:Envelope";
xmlToSign.AddAttribute("xmlns:soapenv","http://schemas.xmlsoap.org/soap/envelope/");
xmlToSign.AddAttribute("xmlns:v1","http://customs.govt.nz/jbms/msggate/reqresp/v1");
xmlToSign.UpdateAttrAt("soapenv:Header|wsse:Security",true,"soapenv:mustUnderstand","1");
xmlToSign.UpdateAttrAt("soapenv:Header|wsse:Security",true,"xmlns:wsse","http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd");
xmlToSign.UpdateAttrAt("soapenv:Header|wsse:Security",true,"xmlns:wsu","http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd");
xmlToSign.UpdateAttrAt("soapenv:Header|wsse:Security|wsu:Timestamp",true,"wsu:Id",tsId.GetAsString());
xmlToSign.UpdateChildContent("soapenv:Header|wsse:Security|wsu:Timestamp|wsu:Created",sbNow.GetAsString());
xmlToSign.UpdateChildContent("soapenv:Header|wsse:Security|wsu:Timestamp|wsu:Expires",sbNowPlusOneHour.GetAsString());
xmlToSign.UpdateAttrAt("soapenv:Body",true,"wsu:Id","id-8");
xmlToSign.UpdateAttrAt("soapenv:Body",true,"xmlns:wsu","http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd");
xmlToSign.UpdateChildContent("soapenv:Body|v1:RequestResponse|v1:Submitter","TEST1234");
xmlToSign.UpdateChildContent("soapenv:Body|v1:RequestResponse|v1:MailboxMsgId","999999");

Chilkat.XmlDSigGen gen = new Chilkat.XmlDSigGen();

gen.SigLocation = "soapenv:Envelope|soapenv:Header|wsse:Security";
gen.SigLocationMod = 0;
gen.SigId = "SIG-037E78514E9B9132CB16817563559695";
gen.SigNamespacePrefix = "ds";
gen.SigNamespaceUri = "http://www.w3.org/2000/09/xmldsig#";
gen.SignedInfoPrefixList = "soapenv v1";
gen.IncNamespacePrefix = "ec";
gen.IncNamespaceUri = "http://www.w3.org/2001/10/xml-exc-c14n#";
gen.SignedInfoCanonAlg = "EXCL_C14N";
gen.SignedInfoDigestMethod = "sha256";

// Set the KeyInfoId before adding references..
gen.KeyInfoId = keyInfoId.GetAsString();

// -------- Reference 1 --------
Chilkat.Xml xml1 = new Chilkat.Xml();
xml1.Tag = "ds:Transforms";
xml1.UpdateAttrAt("ds:Transform",true,"Algorithm","http://www.w3.org/2001/10/xml-exc-c14n#");
xml1.UpdateAttrAt("ds:Transform|ec:InclusiveNamespaces",true,"PrefixList","wsse soapenv v1");
xml1.UpdateAttrAt("ds:Transform|ec:InclusiveNamespaces",true,"xmlns:ec","http://www.w3.org/2001/10/xml-exc-c14n#");

gen.AddSameDocRef2(tsId.GetAsString(),"sha256",xml1,"");

// -------- Reference 2 --------
Chilkat.Xml xml2 = new Chilkat.Xml();
xml2.Tag = "ds:Transforms";
xml2.UpdateAttrAt("ds:Transform",true,"Algorithm","http://www.w3.org/2001/10/xml-exc-c14n#");
xml2.UpdateAttrAt("ds:Transform|ec:InclusiveNamespaces",true,"PrefixList","v1");
xml2.UpdateAttrAt("ds:Transform|ec:InclusiveNamespaces",true,"xmlns:ec","http://www.w3.org/2001/10/xml-exc-c14n#");

gen.AddSameDocRef2("id-8","sha256",xml2,"");

// Provide a certificate + private key. (PFX password is test123)
Chilkat.Cert cert = new Chilkat.Cert();
success = cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123");
if (success != true) {
    Debug.WriteLine(cert.LastErrorText);
    return;
}

gen.SetX509Cert(cert,true);

gen.KeyInfoType = "Custom";

// Create the custom KeyInfo XML..
Chilkat.Xml xmlCustomKeyInfo = new Chilkat.Xml();
xmlCustomKeyInfo.Tag = "wsse:SecurityTokenReference";
xmlCustomKeyInfo.AddAttribute("wsu:Id",strId.GetAsString());
xmlCustomKeyInfo.UpdateAttrAt("wsse:KeyIdentifier",true,"EncodingType","http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-soap-message-security-1.0#Base64Binary");
xmlCustomKeyInfo.UpdateAttrAt("wsse:KeyIdentifier",true,"ValueType","http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-x509-token-profile-1.0#X509v3");
// Insert the single-line base64 of the signing certificate's DER
cert.UncommonOptions = "Base64CertNoCRLF";
xmlCustomKeyInfo.UpdateChildContent("wsse:KeyIdentifier",cert.GetEncoded());

xmlCustomKeyInfo.EmitXmlDecl = false;
gen.CustomKeyInfoXml = xmlCustomKeyInfo.GetXml();

// Load XML to be signed...
Chilkat.StringBuilder sbXml = new Chilkat.StringBuilder();
xmlToSign.GetXmlSb(sbXml);

gen.Behaviors = "IndentedSignature";

// Sign the XML...
gen.VerboseLogging = true;
success = gen.CreateXmlDSigSb(sbXml);
if (success != true) {
    Debug.WriteLine(gen.LastErrorText);
    return;
}

// Save the signed XML to a file.
success = sbXml.WriteFile("c:/temp/qa_output/signedXml.xml","utf-8",false);

Debug.WriteLine(sbXml.GetAsString());