B4X
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)
Chilkat B4X Downloads

Download Chilkat for B4X
B4X
Dim success As Boolean = 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/
Dim pdf As ChilkatPdf
pdf.Initialize("pdf")

'  Load a PDF to be signed.
'  The "hello.pdf" is available at https://chilkatsoft.com/hello.pdf
success = pdf.LoadFile("qa_data/pdf/hello.pdf")
If success = False Then
    Log(pdf.LastErrorText)
    Return
End If


Dim json As ChilkatJsonObject
json.Initialize

'  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.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".
'  ---------------------------------------------------
json.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.
Dim cert As ChilkatCert
cert.Initialize("cert")
success = cert.LoadPfxFile("qa_data/pfx/myPdfSigningCert.pfx", "pfx_password")
If success = False Then
    Log(cert.LastErrorText)
    Return
End If


'  Tell the pdf object to use the certificate for signing.
success = pdf.SetSigningCert(cert)
If success = False Then
    Log(pdf.LastErrorText)
    Return
End If


success = pdf.SignPdf(json, "qa_output/hello_signed.pdf")
If success = False Then
    Log(pdf.LastErrorText)
    Return
End If


Log("The PDF has been successfully cryptographically signed.")