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EuroCert Cloud Sign XML

See more Signing in the Cloud Examples

Demonstrates how to sign XML using the EuroCert cloud provider. The signing of the hash happens on a hardware token on the EuroCert server. Everything else involving the updating the XML to add the signature happens locally within Chilkat.

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

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Local $bSuccess = False

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

; Note: Chilkat's PKCS11 implementation runs on Windows, Linux, Mac OS X, and other supported operating systems.

$oPkcs11 = ObjCreate("Chilkat.Pkcs11")

; Provide the path to the EuroCert Cloud PKCS11 driver.
; If your application runs as a 64-bit process, use the path to the 64-bit ECSPKCS11.dll
$oPkcs11.SharedLibPath = "C:\Users\Public\ECSIGNER\PKCS11\32\ECSPKCS11.dll"

; At this time, we don't know what should be used for the PIN.
; Perhaps it is documented online by EuroCert?
Local $sPin = "user:password"
Local $iUserType = 1

$bSuccess = $oPkcs11.QuickSession($iUserType,$sPin)
If ($bSuccess = False) Then
    ConsoleWrite($oPkcs11.LastErrorText & @CRLF)
    Exit
EndIf

$oCert = ObjCreate("Chilkat.Cert")
$bSuccess = $oCert.LoadFromFile("qa_data/certs/myCert.cer")
If ($bSuccess = False) Then
    ConsoleWrite($oCert.LastErrorText & @CRLF)
    Exit
EndIf

; Tell the certificate to link with the PKCS11 session.
; The cert's private key should be installed on the CloudHSM.
; If there are multiple private keys on the CloudHSM, then Chilkat will automatically
; locate and use the private key corresponding to the certificate.
$bSuccess = $oCert.LinkPkcs11($oPkcs11)
If ($bSuccess = False) Then
    ConsoleWrite($oCert.LastErrorText & @CRLF)
    Exit
EndIf

; --------------------------------------------------------------------------
; At this point, we have the cert to be used for signing.
; Our XML signing code is the same as for a cert obtained from any other source..

; First generate the following XML to be signed:
; Use this online tool to generate code from sample XML: 
; Generate Code to Create XML

; <?xml version="1.0" encoding="UTF-8" standalone="no" ?>
; <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
;     <SOAP-ENV:Header>
;         <wsse:Security xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd" SOAP-ENV:mustUnderstand="1"></wsse:Security>
;     </SOAP-ENV:Header>
;     <SOAP-ENV:Body xmlns:SOAP-SEC="http://schemas.xmlsoap.org/soap/security/2000-12" SOAP-SEC:id="Body">
;         <z:FooBar xmlns:z="http://example.com" />
;     </SOAP-ENV:Body>
; </SOAP-ENV:Envelope>

$oXml = ObjCreate("Chilkat.Xml")
$oXml.Tag = "SOAP-ENV:Envelope"
$oXml.AddAttribute("xmlns:SOAP-ENV","http://schemas.xmlsoap.org/soap/envelope/")
$oXml.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")
$oXml.UpdateAttrAt("SOAP-ENV:Header|wsse:Security",True,"SOAP-ENV:mustUnderstand","1")
$oXml.UpdateAttrAt("SOAP-ENV:Body",True,"xmlns:SOAP-SEC","http://schemas.xmlsoap.org/soap/security/2000-12")
$oXml.UpdateAttrAt("SOAP-ENV:Body",True,"SOAP-SEC:id","Body")
$oXml.UpdateAttrAt("SOAP-ENV:Body|z:FooBar",True,"xmlns:z","http://example.com")

$oGen = ObjCreate("Chilkat.XmlDSigGen")

; Indicate where the Signature will be inserted.
$oGen.SigLocation = "SOAP-ENV:Envelope|SOAP-ENV:Header|wsse:Security"

; Add a reference to the fragment of the XML to be signed.

; Note: "Body" refers to the XML element having an "id" equal to "Body", where "id" is case insensitive
; and where any namespace might qualify the attribute.  In this case, the SOAP-ENV:Body fragment is signed
; NOT because the tag = "Body", but because it has SOAP-SEC:id="Body"
$oGen.AddSameDocRef("Body","sha1","EXCL_C14N","","")

; (You can read about the SignedInfoPrefixList in the online reference documentation.  It's optional..)
$oGen.SignedInfoPrefixList = "wsse SOAP-ENV"

; Provide the private key for signing via the certificate, and indicate that
; we want the base64 of the certificate embedded in the KeyInfo.
$oGen.KeyInfoType = "X509Data"
$oGen.X509Type = "Certificate"

Local $bUsePrivateKey = True
$bSuccess = $oGen.SetX509Cert($oCert,$bUsePrivateKey)
If ($bSuccess <> True) Then
    ConsoleWrite($oGen.LastErrorText & @CRLF)
    $bSuccess = $oPkcs11.CloseSession()
    Exit
EndIf

; Everything's specified.  Now create and insert the Signature
$oSbXml = ObjCreate("Chilkat.StringBuilder")
$oXml.EmitCompact = True
$oXml.GetXmlSb($oSbXml)

$bSuccess = $oGen.CreateXmlDSigSb($oSbXml)
If ($bSuccess <> True) Then
    ConsoleWrite($oGen.LastErrorText & @CRLF)
    $bSuccess = $oPkcs11.CloseSession()
    Exit
EndIf

; Examine the XML with the digital signature inserted
ConsoleWrite($oSbXml.GetAsString() & @CRLF)

; --------------------------------------------------------------------------

; Revert to an unauthenticated session by calling Logout.
$bSuccess = $oPkcs11.Logout()
If ($bSuccess = False) Then
    ConsoleWrite($oPkcs11.LastErrorText & @CRLF)
    $bSuccess = $oPkcs11.CloseSession()
    Exit
EndIf

; When finished, close the session.
; It is important to close the session (memory leaks will occur if the session is not properly closed).
$bSuccess = $oPkcs11.CloseSession()
If ($bSuccess = False) Then
    ConsoleWrite($oPkcs11.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("Success." & @CRLF)