(PowerBuilder) Sign PDF in the Cloud using Azure Key Vault

See more Signing in the Cloud Examples

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

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

integer li_rc
oleobject loo_Pdf
integer li_Success
oleobject loo_Json
oleobject loo_Cert
oleobject loo_JsonAzure

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

loo_Pdf = create oleobject
// Use "Chilkat_9_5_0.Pdf" for versions of Chilkat < 10.0.0
li_rc = loo_Pdf.ConnectToNewObject("Chilkat.Pdf")
if li_rc < 0 then
    destroy loo_Pdf
    MessageBox("Error","Connecting to COM object failed")
    return
end if

// Load a PDF to be signed.
li_Success = loo_Pdf.LoadFile("qa_data/pdf/helloWorld.pdf")
if li_Success = 0 then
    Write-Debug loo_Pdf.LastErrorText
    destroy loo_Pdf
    return
end if

// Options for signing are specified in JSON.
loo_Json = create oleobject
// Use "Chilkat_9_5_0.JsonObject" for versions of Chilkat < 10.0.0
li_rc = loo_Json.ConnectToNewObject("Chilkat.JsonObject")

// Optionally create an LTV-enabled signature
loo_Json.UpdateBool("ltvOcsp",1)

// Define the appearance of the signature.
loo_Json.UpdateInt("page",1)
loo_Json.UpdateString("appearance.y","top")
loo_Json.UpdateString("appearance.x","left")
loo_Json.UpdateString("appearance.fontScale","10.0")
loo_Json.UpdateString("appearance.text[0]","Digitally signed by: cert_cn")
loo_Json.UpdateString("appearance.text[1]","current_dt")
loo_Json.UpdateString("appearance.text[2]","This is an LTV-enabled signature.")

// Load the certificate used for signing.  The certificate's private key is stored in 
// the Azure Key Vault.
// However, we still need the certificate locally (without private key).
loo_Cert = create oleobject
// Use "Chilkat_9_5_0.Cert" for versions of Chilkat < 10.0.0
li_rc = loo_Cert.ConnectToNewObject("Chilkat.Cert")

li_Success = loo_Cert.LoadFromFile("qa_data/certs/myCert.cer")
if li_Success = 0 then
    Write-Debug loo_Cert.LastErrorText
    destroy loo_Pdf
    destroy loo_Json
    destroy loo_Cert
    return
end if

// Here's a screenshot of our certificate with private key on Azure Key Vault:


// To sign using the Azure Key Vault, 
// add the following lines of code to specify your authentication credentials,
// and the name of the certificate w/ private key on the Azure server to be used.
loo_JsonAzure = create oleobject
// Use "Chilkat_9_5_0.JsonObject" for versions of Chilkat < 10.0.0
li_rc = loo_JsonAzure.ConnectToNewObject("Chilkat.JsonObject")

// Set the "service" equal to "azure_keyvault" to tell Chilkat to use Azure Key Vault for signing.
loo_JsonAzure.UpdateString("service","azure_keyvault")
loo_JsonAzure.UpdateString("client_id","APP_ID")
loo_JsonAzure.UpdateString("client_secret","APP_PASSWORD")
loo_JsonAzure.UpdateString("tenant_id","TENANT_ID")
// In the above screenshot, our vault name is "kvchilkat".  You will use your vault name.
loo_JsonAzure.UpdateString("vault_name","VAULT_NAME")
// In the above screenshot, our cert name is "ChilkatTest1".  You will use your cert name.
loo_JsonAzure.UpdateString("cert_name","CERT_NAME")
// In the above screenshot, our cert version is "63b94a23389546ecbc8eb6208a1bef37".  You will use your cert version.
loo_JsonAzure.UpdateString("cert_version","CERT_VERSION")
li_Success = loo_Cert.SetCloudSigner(loo_JsonAzure)

// Tell the pdf object to use the certificate for signing (and for Azure Key Vault to do the actual signing of the hash).
li_Success = loo_Pdf.SetSigningCert(loo_Cert)
if li_Success = 0 then
    Write-Debug loo_Pdf.LastErrorText
    destroy loo_Pdf
    destroy loo_Json
    destroy loo_Cert
    destroy loo_JsonAzure
    return
end if

// Chilkat will build the signed PDF locally, but will (internally) use Azure Key Vault
// to do the RSA (or EC) sign hash operation.
li_Success = loo_Pdf.SignPdf(loo_Json,"qa_output/hello_ltv_signed.pdf")
if li_Success = 0 then
    Write-Debug loo_Pdf.LastErrorText
    destroy loo_Pdf
    destroy loo_Json
    destroy loo_Cert
    destroy loo_JsonAzure
    return
end if

Write-Debug "PDF Cloud Signing using Azure Key Vault Successful."


destroy loo_Pdf
destroy loo_Json
destroy loo_Cert
destroy loo_JsonAzure