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Sign PDF for ICP-Brasil

Sign a PDF to create a signed PDF compliant with the ICP-Brasil Digital Signature Standard Conformity Checker. (Verificador de Conformidade do Padrão de Assinatura Digital ICP-Brasil)
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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.

;  The signed PDF produced by this example should be verifiable at https://validar.iti.gov.br/
$oPdf = ObjCreate("Chilkat.Pdf")

;  Load a PDF to be signed.
;  The "hello.pdf" is available at https://chilkatsoft.com/hello.pdf
$bSuccess = $oPdf.LoadFile("qa_data/pdf/hello.pdf")
If ($bSuccess = False) Then
    ConsoleWrite($oPdf.LastErrorText & @CRLF)
    Exit
EndIf

$oJson = ObjCreate("Chilkat.JsonObject")

;  Define the appearance and location of the signature.
$oJson.UpdateInt("page",1)
$oJson.UpdateString("appearance.y","bottom")
$oJson.UpdateString("appearance.x","middle")
$oJson.UpdateString("appearance.fontScale","9.0")
$oJson.UpdateString("appearance.text[0]","Digitally signed by: cert_cn")
$oJson.UpdateString("appearance.text[1]","current_dt")
$oJson.UpdateString("appearance.image","document-accepted")
$oJson.UpdateString("appearance.imagePlacement","left")
$oJson.UpdateString("appearance.imageOpacity","100")

;  Add the CMS options required for ICP-Brasil
$oJson.UpdateInt("contentType",1)
$oJson.UpdateInt("messageDigest",1)
$oJson.UpdateInt("signingCertificateV2",1)
$oJson.UpdateBool("ltvOcsp",True)

;  Listed here are the currently existing profiles. (Chilkat will add additional ICP Brasil policy profiles in future versions as new ones are created.)
;  See https://www.gov.br/iti/pt-br/assuntos/repositorio/artefatos-de-assinatura-digital for more information.
;  
;  PA_AD_RA_v1_1 --> 2.16.76.1.7.1.5.1.1
;  PA_AD_RA_v1_2 --> 2.16.76.1.7.1.5.1.2
;  PA_AD_RA_v2_0 --> 2.16.76.1.7.1.5.2
;  PA_AD_RA_v2_1 --> 2.16.76.1.7.1.5.2.1
;  PA_AD_RA_v2_2 --> 2.16.76.1.7.1.5.2.2
;  PA_AD_RA_v2_3 --> 2.16.76.1.7.1.5.2.3
;  PA_AD_RA_v2_4 --> 2.16.76.1.7.1.5.2.4

;  PA_AD_RB_v1_1 --> 2.16.76.1.7.1.1.1.1
;  PA_AD_RB_v2_0 --> 2.16.76.1.7.1.1.2
;  PA_AD_RB_v2_1 --> 2.16.76.1.7.1.1.2.1
;  PA_AD_RB_v2_2 --> 2.16.76.1.7.1.1.2.2
;  PA_AD_RB_v2_3 --> 2.16.76.1.7.1.1.2.3

;  PA_AD_RC_v1_1 --> 2.16.76.1.7.1.4.1.1
;  PA_AD_RC_v2_0 --> 2.16.76.1.7.1.4.2
;  PA_AD_RC_v2_1 --> 2.16.76.1.7.1.4.2.1
;  PA_AD_RC_v2_2 --> 2.16.76.1.7.1.4.2.2
;  PA_AD_RC_v2_3 --> 2.16.76.1.7.1.4.2.3

;  PA_AD_RT_v1_1 --> 2.16.76.1.7.1.2.1.1
;  PA_AD_RT_v2_0 --> 2.16.76.1.7.1.2.2
;  PA_AD_RT_v2_1 --> 2.16.76.1.7.1.2.2.1
;  PA_AD_RT_v2_2 --> 2.16.76.1.7.1.2.2.2
;  PA_AD_RT_v2_3 --> 2.16.76.1.7.1.2.2.3

;  PA_AD_RV_v1_1 --> 2.16.76.1.7.1.3.1.1
;  PA_AD_RV_v2_0 --> 2.16.76.1.7.1.3.2
;  PA_AD_RV_v2_1 --> 2.16.76.1.7.1.3.2.1
;  PA_AD_RV_v2_2 --> 2.16.76.1.7.1.3.2.2
;  PA_AD_RV_v2_3 --> 2.16.76.1.7.1.3.2.3

;  PA_PAdES_AD_RA_v1_0 --> 2.16.76.1.7.1.14.1
;  PA_PAdES_AD_RA_v1_1 --> 2.16.76.1.7.1.14.1.1
;  PA_PAdES_AD_RA_v1_2 --> 2.16.76.1.7.1.14.1.2
;  PA_PAdES_AD_RB_v1_0 --> 2.16.76.1.7.1.11.1
;  PA_PAdES_AD_RB_v1_1 --> 2.16.76.1.7.1.11.1.1
;  PA_PAdES_AD_RC_v1_0 --> 2.16.76.1.7.1.13.1
;  PA_PAdES_AD_RC_v1_1 --> 2.16.76.1.7.1.13.1.1
;  PA_PAdES_AD_RC_v1_2 --> 2.16.76.1.7.1.13.1.2
;  PA_PAdES_AD_RT_v1_0 --> 2.16.76.1.7.1.12.1
;  PA_PAdES_AD_RT_v1_1 --> 2.16.76.1.7.1.12.1.1

;  Set the policy profile name
;  ---------------------------------------------------
;  Note: On 24-May-2024, I was informed that adding the "policyId.profile"
;  causes the PDF signature to fail validation at https://validar.iti.gov.br/
;  Perhaps something changed in the years since this example was originally written and tested to be working.
;  You may need to omit the "policyId.profile".
;  ---------------------------------------------------
$oJson.UpdateString("policyId.profile","PA_PAdES_AD_RB_v1_1")

;  Load the signing certificate. (Use your own certificate.)
;  Note: If loading from a smart card, call LoadFromSmartcard instead, and make sure to use Chilkat v9.5.0.88 or later.
$oCert = ObjCreate("Chilkat.Cert")
$bSuccess = $oCert.LoadPfxFile("qa_data/pfx/myPdfSigningCert.pfx","pfx_password")
If ($bSuccess = False) Then
    ConsoleWrite($oCert.LastErrorText & @CRLF)
    Exit
EndIf

;  Tell the pdf object to use the certificate for signing.
$bSuccess = $oPdf.SetSigningCert($oCert)
If ($bSuccess = False) Then
    ConsoleWrite($oPdf.LastErrorText & @CRLF)
    Exit
EndIf

$bSuccess = $oPdf.SignPdf($oJson,"qa_output/hello_signed.pdf")
If ($bSuccess = False) Then
    ConsoleWrite($oPdf.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("The PDF has been successfully cryptographically signed." & @CRLF)