Java

Sign Italian SPID Metadata XML

See more XML Digital Signatures Examples

Demonstrates how to create an XML digital signature for Italian SPID Metadata. Chilkat2 Java

import com.chilkatsoft.chilkat2.Cert;
import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.StringBuilder;
import com.chilkatsoft.chilkat2.XmlDSig;
import com.chilkatsoft.chilkat2.XmlDSigGen;

public class ChilkatExample {

    public static void main(String[] args) {
        boolean success = false;

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

        success = true;

        // Load the XML to be signed.
        StringBuilder sbXml = new StringBuilder();
        try {
            sbXml.loadFile("qa_data/xml_dsig/spid_metadata.xml", "utf-8");
        } catch (ChilkatException e) {
            System.out.println("Failed to load the input file.");
            return;
        }

        // The XML to sign contains XML such as this:

        // <?xml version="1.0" encoding="utf-8"?>
        // <md:EntityDescriptor xmlns:md="urn:oasis:names:tc:SAML:2.0:metadata" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" entityID="https://***.it" ID="_AE17AFFF-A600-49D5-B81D-76EEA55B50FF">
        //     <md:SPSSODescriptor protocolSupportEnumeration="urn:oasis:names:tc:SAML:2.0:protocol" AuthnRequestsSigned="true" WantAssertionsSigned="true">
        //         <md:KeyDescriptor use="signing">
        //             <ds:KeyInfo xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
        //                 <ds:X509Data>
        //                     <ds:X509Certificate>MIIF5...</ds:X509Certificate>
        //                 </ds:X509Data>
        //             </ds:KeyInfo>
        //         </md:KeyDescriptor>
        //         <md:KeyDescriptor use="encryption">
        //             <ds:KeyInfo xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
        //                 <ds:X509Data>
        //                     <ds:X509Certificate>MIIF5...</ds:X509Certificate>
        //                 </ds:X509Data>
        //             </ds:KeyInfo>
        //         </md:KeyDescriptor>
        //         <md:SingleLogoutService Binding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST" Location="https://***.it/it-it/spid/logout"/>
        //         <md:NameIDFormat>urn:oasis:names:tc:SAML:2.0:nameid-format:transient</md:NameIDFormat>
        //         <md:AssertionConsumerService Binding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST" Location="https://***.it/it-it/spid/loginresp" index="0" isDefault="true"/>
        //         <md:AttributeConsumingService index="1">
        //             <md:ServiceName xml:lang="it">Servizi Online</md:ServiceName>
        //             <md:ServiceDescription xml:lang="it">Accesso ai Servizi Online</md:ServiceDescription>
        //             <md:RequestedAttribute Name="spidCode" NameFormat="urn:oasis:names:tc:SAML:2.0:attrname-format:basic"/>
        //             <md:RequestedAttribute Name="name" NameFormat="urn:oasis:names:tc:SAML:2.0:attrname-format:basic"/>
        //             <md:RequestedAttribute Name="familyName" NameFormat="urn:oasis:names:tc:SAML:2.0:attrname-format:basic"/>
        //             <md:RequestedAttribute Name="fiscalNumber" NameFormat="urn:oasis:names:tc:SAML:2.0:attrname-format:basic"/>
        //         </md:AttributeConsumingService>
        //     </md:SPSSODescriptor>
        //     <md:Organization>
        //         <md:OrganizationName xml:lang="it">SomeCompany s.r.l.</md:OrganizationName>
        //         <md:OrganizationDisplayName xml:lang="it">SomeCompany s.r.l.</md:OrganizationDisplayName>
        //         <md:OrganizationURL xml:lang="it">https://***.it</md:OrganizationURL>
        //     </md:Organization>
        // </md:EntityDescriptor>

        XmlDSigGen gen = new XmlDSigGen();

        gen.setSigLocation("md:EntityDescriptor|md:SPSSODescriptor");
        gen.setSigLocationMod(2);
        gen.setSignedInfoCanonAlg("EXCL_C14N");
        gen.setSignedInfoDigestMethod("sha256");

        // -------- Reference 1 --------
        gen.addSameDocRef("_AE17AFFF-A600-49D5-B81D-76EEA55B50FF", "sha256", "EXCL_C14N", "", "");

        // Provide a certificate + private key. (PFX password is test123)
        Cert cert = new Cert();
        try {
            cert.loadPfxFile("qa_data/pfx/cert_test123.pfx", "test123");

            gen.setX509Cert(cert, true);

            gen.setKeyInfoType("X509Data+KeyValue");
            gen.setX509Type("Certificate");

            gen.setBehaviors("IndentedSignature,ForceAddEnvelopedSignatureTransform,OmitAlreadyDefinedSigNamespace");

            // Sign the XML...
            gen.createXmlDSigSb(sbXml);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

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

        // Save the signed XML to a file.
        sbXml.writeFile("qa_output/signedXml.xml", "utf-8", false);

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

        // ----------------------------------------
        // Verify the signatures we just produced...
        XmlDSig verifier = new XmlDSig();
        try {
            verifier.loadSignatureSb(sbXml);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        int numSigs = verifier.getNumSignatures();
        int verifyIdx = 0;
        while (verifyIdx < numSigs) {
            verifier.setSelector(verifyIdx);
            try {
                verifier.verifySignature(true);
            } catch (ChilkatException e) {
                System.out.println(e.getLastErrorText());
                return;
            }

            verifyIdx = verifyIdx + 1;
        }

        System.out.println("All signatures were successfully verified.");
    }
}