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Create ICP-Brasil Compliant CMS Signature

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Demonstrates how to create a .p7s signature that contains a data file, which in this case is a PDF. The .p7s will be compliant with the ICP-Brazil Digital Signature Standard.

The .p7s file created by this example can be verified at ICP-Brasil Online Verifier

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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: This example creates a CMS signature (.p7s) that contains the PDF.
; It is different than signing a PDF.  To sign a PDF where the resulting PDF contains the CMS signature,
; see this example:  Sign PDF for ICP-Brasil
; ------------------------------------------------------------------------------------------------------
$oCrypt = ObjCreate("Chilkat.Crypt2")

; Any type of file can be signed.  It doesn't have to be a PDF.
Local $sInFile = "qa_data/pdf/helloWorld.pdf"

$oBd = ObjCreate("Chilkat.BinData")
$bSuccess = $oBd.LoadFile($sInFile)
If ($bSuccess = False) Then
    ConsoleWrite("Failed to load " & $sInFile & @CRLF)
    Exit
EndIf

; We'll be using a certificate w/ private key stored on a smartcard for signing.
$oCert = ObjCreate("Chilkat.Cert")

; If the smartcard or token requires a PIN, we can set it here to avoid the dialog...
$oCert.SmartCardPin = "000000"

$bSuccess = $oCert.LoadFromSmartcard("")
If ($bSuccess <> True) Then
    ConsoleWrite($oCert.LastErrorText & @CRLF)
    Exit
EndIf

; Tell the crypt component to use this cert.
$bSuccess = $oCrypt.SetSigningCert($oCert)
If ($bSuccess <> True) Then
    ConsoleWrite($oCrypt.LastErrorText & @CRLF)
    Exit
EndIf

; Set properties for signing...
$oCrypt.HashAlgorithm = "sha256"

$oJsonSigningAttrs = ObjCreate("Chilkat.JsonObject")
$oJsonSigningAttrs.UpdateInt("contentType",1)
$oJsonSigningAttrs.UpdateInt("signingTime",1)
$oJsonSigningAttrs.UpdateInt("messageDigest",1)
$oJsonSigningAttrs.UpdateBool("signingCertificateV2",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 --> 2.16.76.1.7.1.5.1
; 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 --> 2.16.76.1.7.1.1.1
; 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 --> 2.16.76.1.7.1.4.1
; 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 --> 2.16.76.1.7.1.2.1
; 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 --> 2.16.76.1.7.1.3.1
; 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

; Set the policy OID and the profile name
$oJsonSigningAttrs.UpdateString("policyId.id","2.16.76.1.7.1.1.2.3")
$oJsonSigningAttrs.UpdateString("policyId.profile","PA_AD_RB_v2_3")

$oCrypt.SigningAttributes = $oJsonSigningAttrs.Emit()

; The Brazil government validator requires the ASN.1 data to be in "constructed octets" form..
$oCrypt.UncommonOptions = "UseConstructedOctets,OmitAlgorithmIdNull"
$oCrypt.IncludeCertChain = False

; Sign. 
$bSuccess = $oCrypt.OpaqueSignBd($oBd)
If ($bSuccess = False) Then
    ConsoleWrite($oCrypt.LastErrorText & @CRLF)
    Exit
EndIf

; Save to a .p7s
$bSuccess = $oBd.WriteFile("qa_output/helloWorld.pdf.p7s")

ConsoleWrite("Success" & @CRLF)