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Java

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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Java
import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    boolean 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..)
    CkPfx pfx = new CkPfx();
    success = pfx.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123");
    if (success == false) {
        System.out.println(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.

    CkCert signingCert = new CkCert();
    success = pfx.CertAt(0,signingCert);
    if (success == false) {
        System.out.println(pfx.lastErrorText());
        return;
        }

    CkBinData bdCert = new CkBinData();
    signingCert.ExportCertDerBd(bdCert);
    CkStringBuilder sbCert64 = new CkStringBuilder();
    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...
    CkXml xmlToSign = new CkXml();
    xmlToSign.put_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.

    CkXmlDSigGen gen = new CkXmlDSigGen();

    gen.put_SigLocation("SOAP-ENV:Envelope|SOAP-ENV:Header|wsse:Security");
    gen.put_SigLocationMod(0);
    gen.put_SigNamespacePrefix("ds");
    gen.put_SigNamespaceUri("http://www.w3.org/2000/09/xmldsig#");
    gen.put_SignedInfoCanonAlg("EXCL_C14N");
    gen.put_SignedInfoDigestMethod("sha256");

    // Set the KeyInfoId before adding references..
    gen.put_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)
    CkCert cert = new CkCert();
    success = cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123");
    if (success == false) {
        System.out.println(cert.lastErrorText());
        return;
        }

    gen.SetX509Cert(cert,true);

    gen.put_KeyInfoType("Custom");

    // Create the custom KeyInfo XML..
    CkXml xmlCustomKeyInfo = new CkXml();
    xmlCustomKeyInfo.put_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.put_EmitXmlDecl(false);
    gen.put_CustomKeyInfoXml(xmlCustomKeyInfo.getXml());

    // -------------------------------------------------------------------------------------------
    // Load XML to be signed...
    CkStringBuilder sbXml = new CkStringBuilder();
    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.put_Behaviors("IndentedSignature");

    // Sign the XML...
    success = gen.CreateXmlDSigSb(sbXml);
    if (success == false) {
        System.out.println(gen.lastErrorText());
        return;
        }

    // -----------------------------------------------

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

    System.out.println(sbXml.getAsString());
  }
}