(VB.NET) Create ICP-Brasil Compliant CMS Signature

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

Note: Requires Chilkat v9.5.0.92 or greater.

For more information, see http://www.iti.gov.br/images/repositorio/consulta-publica/encerradas/DOC-ICP-15_-_Versao_2.2_VISAO_GERAL_SOBRE_ASSIN_DIG_NA_ICP-BRASIL_xx-xx-2015.pdf

Chilkat .NET Downloads Chilkat .NET Framework Chilkat for .NET Core

' 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
' ------------------------------------------------------------------------------------------------------
Dim crypt As New Chilkat.Crypt2

' Any type of file can be signed.  It doesn't have to be a PDF.
Dim inFile As String = "qa_data/pdf/helloWorld.pdf"

Dim bd As New Chilkat.BinData
Dim success As Boolean = bd.LoadFile(inFile)
If (success = False) Then
    Debug.WriteLine("Failed to load " & inFile)
    Exit Sub
End If


' We'll be using a certificate w/ private key stored on a smartcard for signing.
Dim cert As New Chilkat.Cert

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

success = cert.LoadFromSmartcard("")
If (success <> True) Then
    Debug.WriteLine(cert.LastErrorText)
    Exit Sub
End If


' Tell the crypt component to use this cert.
success = crypt.SetSigningCert(cert)
If (success <> True) Then
    Debug.WriteLine(crypt.LastErrorText)
    Exit Sub
End If


' Set properties for signing...
crypt.HashAlgorithm = "sha256"

Dim jsonSigningAttrs As New Chilkat.JsonObject
jsonSigningAttrs.UpdateInt("contentType",1)
jsonSigningAttrs.UpdateInt("signingTime",1)
jsonSigningAttrs.UpdateInt("messageDigest",1)
jsonSigningAttrs.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
jsonSigningAttrs.UpdateString("policyId.id","2.16.76.1.7.1.1.2.3")
jsonSigningAttrs.UpdateString("policyId.profile","PA_AD_RB_v2_3")


crypt.SigningAttributes = jsonSigningAttrs.Emit()

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

' Sign. 
success = crypt.OpaqueSignBd(bd)
If (success = False) Then
    Debug.WriteLine(crypt.LastErrorText)
    Exit Sub
End If


' Save to a .p7s
success = bd.WriteFile("qa_output/helloWorld.pdf.p7s")

Debug.WriteLine("Success")