B4X

Sign Italian SPID Metadata XML

See more XML Digital Signatures Examples

Demonstrates how to create an XML digital signature for Italian SPID Metadata. B4X

Dim success As Boolean = 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.
Dim sbXml As ChilkatStringBuilder
sbXml.Initialize
success = sbXml.LoadFile("qa_data/xml_dsig/spid_metadata.xml", "utf-8")
If success = False Then
    Log("Failed to load the input file.")
    Return
End If


'  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>

Dim gen As ChilkatXmlDSigGen
gen.Initialize("gen")

gen.SigLocation = "md:EntityDescriptor|md:SPSSODescriptor"
gen.SigLocationMod = 2
gen.SignedInfoCanonAlg = "EXCL_C14N"
gen.SignedInfoDigestMethod = "sha256"

'  -------- Reference 1 --------
gen.AddSameDocRef("_AE17AFFF-A600-49D5-B81D-76EEA55B50FF", "sha256", "EXCL_C14N", "", "")

'  Provide a certificate + private key. (PFX password is test123)
Dim cert As ChilkatCert
cert.Initialize("cert")
success = cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx", "test123")
If success <> True Then
    Log(cert.LastErrorText)
    Return
End If

gen.SetX509Cert(cert, True)

gen.KeyInfoType = "X509Data+KeyValue"
gen.X509Type = "Certificate"

gen.Behaviors = "IndentedSignature,ForceAddEnvelopedSignatureTransform,OmitAlreadyDefinedSigNamespace"

'  Sign the XML...
success = gen.CreateXmlDSigSb(sbXml)
If success <> True Then
    Log(gen.LastErrorText)
    Return
End If

'  -----------------------------------------------

'  Save the signed XML to a file.
success = sbXml.WriteFile("qa_output/signedXml.xml", "utf-8", False)

Log(sbXml.GetAsString)

'  ----------------------------------------
'  Verify the signatures we just produced...
Dim verifier As ChilkatXmlDSig
verifier.Initialize
success = verifier.LoadSignatureSb(sbXml)
If success <> True Then
    Log(verifier.LastErrorText)
    Return
End If


Dim numSigs As Int = verifier.NumSignatures
Dim verifyIdx As Int = 0
Do While verifyIdx < numSigs
    verifier.Selector = verifyIdx
    Dim verified As Boolean = verifier.VerifySignature(True)
    If verified <> True Then
        Log(verifier.LastErrorText)
        Return
    End If

    verifyIdx = verifyIdx + 1
Loop
Log("All signatures were successfully verified.")