PowerBuilder

PKCS11 Certificate Chain

See more PKCS11 Examples

Demonstrates how to make CA certs available for the certificate chain to be included when creating a signature (using a PKCS11 compatible smart card / USB token) such as for PDF, XMLDSig, etc.

Note: This example requires Chilkat v9.5.0.88 or later.

PowerBuilder

integer li_rc
integer li_Success
oleobject loo_Pkcs11
integer li_SlotID
integer li_ReadWrite
integer li_UserType
string ls_Pin
oleobject loo_Cert
oleobject loo_CertVault

li_Success = 0

// 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.

loo_Pkcs11 = create oleobject
li_rc = loo_Pkcs11.ConnectToNewObject("Chilkat.Pkcs11")
if li_rc < 0 then
    destroy loo_Pkcs11
    MessageBox("Error","Connecting to COM object failed")
    return
end if

// You will use the DLL (or shared lib) provided by your smart card vendor, or a DLL compatible with your smart card.
// On Windows, if the DLL is located in C:\Windows\System32, specify only the filename.
// Otherwise provide the full path.
loo_Pkcs11.SharedLibPath = "bit4xpki.dll"

li_Success = loo_Pkcs11.Initialize()
if li_Success = 0 then
    Write-Debug loo_Pkcs11.LastErrorText
    destroy loo_Pkcs11
    return
end if

// Pass -1 for the slotID to open a session on the first non-empty slot.
li_SlotID = -1

// Open a session.
li_ReadWrite = 1
li_Success = loo_Pkcs11.OpenSession(li_SlotID,li_ReadWrite)
if li_Success = 0 then
    Write-Debug loo_Pkcs11.LastErrorText
    destroy loo_Pkcs11
    return
end if

// Make it an authenticated session by calling Login.
li_UserType = 1
// Make sure to use the correct PIN for your smart card..
ls_Pin = "0000"
li_Success = loo_Pkcs11.Login(li_UserType,ls_Pin)
if li_Success = 0 then
    Write-Debug loo_Pkcs11.LastErrorText
    li_Success = loo_Pkcs11.CloseSession()
    destroy loo_Pkcs11
    return
end if

// Get the certificate (on the smart card) that has a private key.
loo_Cert = create oleobject
li_rc = loo_Cert.ConnectToNewObject("Chilkat.Cert")

li_Success = loo_Pkcs11.FindCert("privateKey","",loo_Cert)
if li_Success = 1 then
    Write-Debug "Cert with private key: " + loo_Cert.SubjectCN
else
    Write-Debug "No certificates having a private key were found."
    li_Success = loo_Pkcs11.CloseSession()
    destroy loo_Pkcs11
    destroy loo_Cert
    return
end if

// If the certificates in the chain of authentication were contained on the smart card,
// then Chilkat would already have them (via the FindCert function) and the certs in the chain will be automatically used
// as needed when signing occurs.

// If you have CA certs located elsewhere, such as in .cer files, you can make them available to Chilkat in the following way:

loo_CertVault = create oleobject
li_rc = loo_CertVault.ConnectToNewObject("Chilkat.XmlCertVault")

// Please review the methods available in the XML certificate vault class.  Different methods exist for adding certificates
// from various sources, such as PEM, PFX, or in-memory sources..
li_Success = loo_CertVault.AddCertFile("someDir/caIntermediateCert.cer")
// ...
li_Success = loo_CertVault.AddCertFile("someDir/caCert.cer")
// (Your code should check the return value to make sure it succeeded.)

li_Success = loo_Cert.UseCertVault(loo_CertVault)
if li_Success = 0 then
    Write-Debug loo_Cert.LastErrorText
    li_Success = loo_Pkcs11.CloseSession()
    destroy loo_Pkcs11
    destroy loo_Cert
    destroy loo_CertVault
    return
end if

// --------------------------------------------------------------------------
// At this point, we have the cert (and certs in the chain of authentication) to be used for signing.
// The code for using the certificate in creating the digital signature, such as for a PDF, XML, etc., go here...

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

// Revert to an unauthenticated session by calling Logout.
li_Success = loo_Pkcs11.Logout()
if li_Success = 0 then
    Write-Debug loo_Pkcs11.LastErrorText
    li_Success = loo_Pkcs11.CloseSession()
    destroy loo_Pkcs11
    destroy loo_Cert
    destroy loo_CertVault
    return
end if

// When finished, close the session.
// It is important to close the session (memory leaks will occur if the session is not properly closed).
li_Success = loo_Pkcs11.CloseSession()
if li_Success = 0 then
    Write-Debug loo_Pkcs11.LastErrorText
    destroy loo_Pkcs11
    destroy loo_Cert
    destroy loo_CertVault
    return
end if

Write-Debug "Success."


destroy loo_Pkcs11
destroy loo_Cert
destroy loo_CertVault