(VB.NET UWP/WinRT) Sign PDF for ICP-Brasil

See more PDF Signatures Examples

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)

Note: This example requires Chilkat v9.5.0.87 or greater.

For more information, see https://verificador.iti.gov.br/verifier-2.6.2/

Chilkat Universal Windows Platform (UWP) / WinRT Downloads Chilkat for the Universal Windows Platform (UWP)

' 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://verificador.iti.gov.br/verifier-2.6.2/
Dim pdf As New Chilkat.Pdf

' Load a PDF to be signed.
' The "hello.pdf" is available at https://chilkatsoft.com/hello.pdf
Dim success As Boolean = pdf.LoadFile("qa_data/pdf/hello.pdf")
If (success = False) Then
    Debug.WriteLine(pdf.LastErrorText)
    Exit Sub
End If



Dim json As New Chilkat.JsonObject

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

' Add the CMS options required for ICP-Brasil
json.UpdateInt("contentType",1)
json.UpdateInt("messageDigest",1)
json.UpdateInt("signingCertificateV2",1)
json.UpdateString("policyId.id","2.16.76.1.7.1.1.2.3")
json.UpdateString("policyId.hash","sW6Iu/dzIqZ5lbeQeHeO09DqfIhYe29tUYtxXo92o9U=")
json.UpdateString("policyId.uri","http://politicas.icpbrasil.gov.br/PA_AD_RB_v2_3.der")
json.UpdateString("policyId.hashAlg","SHA256")

' 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.
Dim cert As New Chilkat.Cert
success = cert.LoadPfxFile("qa_data/pfx/myPdfSigningCert.pfx","pfx_password")
If (success = False) Then
    Debug.WriteLine(cert.LastErrorText)
    Exit Sub
End If



' Tell the pdf object to use the certificate for signing.
success = pdf.SetSigningCert(cert)
If (success = False) Then
    Debug.WriteLine(pdf.LastErrorText)
    Exit Sub
End If


success = Await pdf.SignPdfAsync(json,"qa_output/hello_signed.pdf")
If (success = False) Then
    Debug.WriteLine(pdf.LastErrorText)
    Exit Sub
End If


Debug.WriteLine("The PDF has been successfully cryptographically signed.")