C#
C#
Create IRS MeF Login Service Request Message
See more XML Digital Signatures Examples
This example demonstrates how to create a digitally signed Login Service Request Message.This example used the documentation at https://www.irs.gov/pub/irs-utl/mef-doc-stp_ref_guide.pdf as a guide.
It creates signed XML as specified in section 4.1.1 found in Section 4: Example A2A Web Service Messages.
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bool success = false;
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
// --------------------------------------------------------------------------------
// Also see Chilkat's Online WSDL Code Generator
// to generate code and SOAP Request and Response XML for each operation in a WSDL.
// --------------------------------------------------------------------------------
// The goal of this example is to create signed SOAP XML such as the following:
// <?xml version="1.0" encoding="UTF-8"?>
// <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
// <SOAP-ENV:Header>
// <wsse:Security xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd">
// <wsse:BinarySecurityToken
// xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd"
// EncodingType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-soap-message-security-1.0#Base64Binary"
// ValueType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-x509-token-profile-1.0#X509v3"
// wsu:Id="CertId-1673181727">MIIHab...n71P</wsse:BinarySecurityToken>
// <ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
// <ds:SignedInfo>
// <ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
// <ds:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256"/>
// <ds:Reference URI="#id-1214941501">
// <ds:Transforms>
// <ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
// </ds:Transforms>
// <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/>
// <ds:DigestValue>abcdefghijkLMNOPQRSTUVwxyz012345Em0o3VEOTck=</ds:DigestValue>
// </ds:Reference>
// <ds:Reference URI="#id-1871558655">
// <ds:Transforms>
// <ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
// </ds:Transforms>
// <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/>
// <ds:DigestValue>abcdefghijkLMNOPQRSTUVwxyz012345Xm5ViA+royg=</ds:DigestValue>
// </ds:Reference>
// </ds:SignedInfo>
// <ds:SignatureValue>abcd...5Nbw==</ds:SignatureValue>
// <ds:KeyInfo Id="KeyId-256137097">
// <wsse:SecurityTokenReference xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd" wsu:Id="STRId-1862925355">
// <wsse:Reference URI="#CertId-1673181727" ValueType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-x509-token-profile-1.0#X509v3"/>
// </wsse:SecurityTokenReference>
// </ds:KeyInfo>
// </ds:Signature>
// </wsse:Security>
// <ns1:MeFHeader xmlns:ns1="http://www.irs.gov/a2a/mef/MeFHeader.xsd" xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd" wsu:Id="id-1214941501">
// <ns1:MessageID>12345202018200000234</ns1:MessageID>
// <ns1:Action>Login</ns1:Action>
// <ns1:MessageTs>2020-06-30T15:25:42.678Z</ns1:MessageTs>
// <ns1:ETIN>12345</ns1:ETIN>
// <ns1:SessionKeyCd>Y</ns1:SessionKeyCd>
// <ns1:TestCd>P</ns1:TestCd>
// <ns1:AppSysID>65432190</ns1:AppSysID>
// <ns1:WSDLVersionNum>10.3</ns1:WSDLVersionNum>
// <ns1:ClientSoftwareTxt>SOATest</ns1:ClientSoftwareTxt>
// </ns1:MeFHeader>
// </SOAP-ENV:Header>
// <SOAP-ENV:Body xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd" wsu:Id="id-1871558655">
// <LoginRequest xmlns="http://www.irs.gov/a2a/mef/MeFMSIServices.xsd"/>
// </SOAP-ENV:Body>
// </SOAP-ENV:Envelope>
// -------------------------------------------------------------------------------------------
// First, let's load the certificate + private key to be used for signing (from a PFX).
// (It is also possible to use certificates installed on a Windows system, or from other file formats..)
Chilkat.Pfx pfx = new Chilkat.Pfx();
success = pfx.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123");
if (success == false) {
Debug.WriteLine(pfx.LastErrorText);
return;
}
// We'll be needing the X.509 signing cert as base64 for the BinarySecurityToken, so let's get it now..
// The certificate having the private key should be the 1st in the PFX.
Chilkat.Cert signingCert = new Chilkat.Cert();
success = pfx.CertAt(0,signingCert);
if (success == false) {
Debug.WriteLine(pfx.LastErrorText);
return;
}
Chilkat.BinData bdCert = new Chilkat.BinData();
signingCert.ExportCertDerBd(bdCert);
Chilkat.StringBuilder sbCert64 = new Chilkat.StringBuilder();
bdCert.GetEncodedSb("base64",sbCert64);
// -------------------------------------------------------------------------------------------
// The XML before signing would look like this:
// <?xml version="1.0" encoding="UTF-8"?>
// <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
// <SOAP-ENV:Header>
// <wsse:Security xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd">
// <wsse:BinarySecurityToken
// xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd"
// EncodingType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-soap-message-security-1.0#Base64Binary"
// ValueType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-x509-token-profile-1.0#X509v3"
// wsu:Id="CertId-1673181727">MIIHab...n71P</wsse:BinarySecurityToken>
// </wsse:Security>
// <ns1:MeFHeader xmlns:ns1="http://www.irs.gov/a2a/mef/MeFHeader.xsd" xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd" wsu:Id="id-1214941501">
// <ns1:MessageID>12345202018200000234</ns1:MessageID>
// <ns1:Action>Login</ns1:Action>
// <ns1:MessageTs>2020-06-30T15:25:42.678Z</ns1:MessageTs>
// <ns1:ETIN>12345</ns1:ETIN>
// <ns1:SessionKeyCd>Y</ns1:SessionKeyCd>
// <ns1:TestCd>P</ns1:TestCd>
// <ns1:AppSysID>65432190</ns1:AppSysID>
// <ns1:WSDLVersionNum>10.3</ns1:WSDLVersionNum>
// <ns1:ClientSoftwareTxt>SOATest</ns1:ClientSoftwareTxt>
// </ns1:MeFHeader>
// </SOAP-ENV:Header>
// <SOAP-ENV:Body xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd" wsu:Id="id-1871558655">
// <LoginRequest xmlns="http://www.irs.gov/a2a/mef/MeFMSIServices.xsd"/>
// </SOAP-ENV:Body>
// </SOAP-ENV:Envelope>
// You can use the online XML code generation tool at http://tools.chilkat.io/xmlCreate.cshtml
// to generate the following XML creation source code:
// Create the XML to be signed...
Chilkat.Xml xmlToSign = new Chilkat.Xml();
xmlToSign.Tag = "SOAP-ENV:Envelope";
xmlToSign.AddAttribute("xmlns:SOAP-ENV","http://schemas.xmlsoap.org/soap/envelope/");
xmlToSign.AddAttribute("xmlns:xsd","http://www.w3.org/2001/XMLSchema");
xmlToSign.AddAttribute("xmlns:xsi","http://www.w3.org/2001/XMLSchema-instance");
xmlToSign.UpdateAttrAt("SOAP-ENV:Header|wsse:Security",true,"xmlns:wsse","http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd");
xmlToSign.UpdateAttrAt("SOAP-ENV:Header|wsse:Security|wsse:BinarySecurityToken",true,"xmlns:wsu","http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd");
xmlToSign.UpdateAttrAt("SOAP-ENV:Header|wsse:Security|wsse:BinarySecurityToken",true,"EncodingType","http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-soap-message-security-1.0#Base64Binary");
xmlToSign.UpdateAttrAt("SOAP-ENV:Header|wsse:Security|wsse:BinarySecurityToken",true,"ValueType","http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-x509-token-profile-1.0#X509v3");
xmlToSign.UpdateAttrAt("SOAP-ENV:Header|wsse:Security|wsse:BinarySecurityToken",true,"wsu:Id","CertId-1673181727");
xmlToSign.UpdateChildContent("SOAP-ENV:Header|wsse:Security|wsse:BinarySecurityToken",sbCert64.GetAsString());
xmlToSign.UpdateAttrAt("SOAP-ENV:Header|ns1:MeFHeader",true,"xmlns:ns1","http://www.irs.gov/a2a/mef/MeFHeader.xsd");
xmlToSign.UpdateAttrAt("SOAP-ENV:Header|ns1:MeFHeader",true,"xmlns:wsu","http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd");
xmlToSign.UpdateAttrAt("SOAP-ENV:Header|ns1:MeFHeader",true,"wsu:Id","id-1214941501");
xmlToSign.UpdateChildContent("SOAP-ENV:Header|ns1:MeFHeader|ns1:MessageID","12345202018200000234");
xmlToSign.UpdateChildContent("SOAP-ENV:Header|ns1:MeFHeader|ns1:Action","Login");
xmlToSign.UpdateChildContent("SOAP-ENV:Header|ns1:MeFHeader|ns1:MessageTs","2020-06-30T15:25:42.678Z");
xmlToSign.UpdateChildContentInt("SOAP-ENV:Header|ns1:MeFHeader|ns1:ETIN",12345);
xmlToSign.UpdateChildContent("SOAP-ENV:Header|ns1:MeFHeader|ns1:SessionKeyCd","Y");
xmlToSign.UpdateChildContent("SOAP-ENV:Header|ns1:MeFHeader|ns1:TestCd","P");
xmlToSign.UpdateChildContentInt("SOAP-ENV:Header|ns1:MeFHeader|ns1:AppSysID",65432190);
xmlToSign.UpdateChildContent("SOAP-ENV:Header|ns1:MeFHeader|ns1:WSDLVersionNum","10.3");
xmlToSign.UpdateChildContent("SOAP-ENV:Header|ns1:MeFHeader|ns1:ClientSoftwareTxt","SOATest");
xmlToSign.UpdateAttrAt("SOAP-ENV:Body",true,"xmlns:wsu","http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd");
xmlToSign.UpdateAttrAt("SOAP-ENV:Body",true,"wsu:Id","id-1871558655");
xmlToSign.UpdateAttrAt("SOAP-ENV:Body|LoginRequest",true,"xmlns","http://www.irs.gov/a2a/mef/MeFMSIServices.xsd");
// -------------------------------------------------------------------------------------------
// Setup the XML DSig generator object to create the desired signature.
Chilkat.XmlDSigGen gen = new Chilkat.XmlDSigGen();
gen.SigLocation = "SOAP-ENV:Envelope|SOAP-ENV:Header|wsse:Security";
gen.SigLocationMod = 0;
gen.SigNamespacePrefix = "ds";
gen.SigNamespaceUri = "http://www.w3.org/2000/09/xmldsig#";
gen.SignedInfoCanonAlg = "EXCL_C14N";
gen.SignedInfoDigestMethod = "sha256";
// Set the KeyInfoId before adding references..
gen.KeyInfoId = "KeyId-256137097";
// -------- Reference 1 --------
gen.AddSameDocRef("id-1214941501","sha256","EXCL_C14N","","");
// -------- Reference 2 --------
gen.AddSameDocRef("id-1871558655","sha256","EXCL_C14N","","");
// 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 == false) {
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("xmlns:wsu","http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd");
xmlCustomKeyInfo.AddAttribute("wsu:Id","STRId-1862925355");
xmlCustomKeyInfo.UpdateAttrAt("wsse:Reference",true,"URI","#CertId-1673181727");
xmlCustomKeyInfo.UpdateAttrAt("wsse:Reference",true,"ValueType","http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-x509-token-profile-1.0#X509v3");
xmlCustomKeyInfo.EmitXmlDecl = false;
gen.CustomKeyInfoXml = xmlCustomKeyInfo.GetXml();
// -------------------------------------------------------------------------------------------
// Load XML to be signed...
Chilkat.StringBuilder sbXml = new Chilkat.StringBuilder();
xmlToSign.GetXmlSb(sbXml);
// Update BinarySecurityToken_Base64Binary_Content with the actual X509 of the signing cert.
int nReplaced = sbXml.Replace("BinarySecurityToken_Base64Binary_Content",cert.GetEncoded());
gen.Behaviors = "IndentedSignature";
// Sign the XML...
success = gen.CreateXmlDSigSb(sbXml);
if (success == false) {
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());