B4X
Create CAdES Signature (.p7s) Compliant with ICP-Brazil Digital Signature Standard

Demonstrates how to create a CMS signature w/ policy ID that is compliant with the ICP-Brazil Digital Signature Standard.
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.

'  ------------------------------------------------------------------------------------------------------
'  Note: This example creates a CAdES (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 ChilkatCrypt2
crypt.Initialize("crypt")

Dim cert As ChilkatCert
cert.Initialize("cert")
success = cert.LoadPfxFile("mySigningCert.pfx", "pfxPassword")
If success <> True Then
    Log(cert.LastErrorText)
    Return
End If


crypt.SetSigningCert(cert)

'  See https://www.gov.br/iti/pt-br/assuntos/repositorio/artefatos-de-assinatura-digital

'  Create JSON to indicate which signing attributes to include.
Dim attrs As ChilkatJsonObject
attrs.Initialize
attrs.UpdateBool("contentType", True)
attrs.UpdateBool("signingTime", True)
attrs.UpdateBool("messageDigest", True)
attrs.UpdateBool("signingCertificateV2", True)

attrs.UpdateString("policyId.hashAlg", "SHA256")

'  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
attrs.UpdateString("policyId.id", "2.16.76.1.7.1.1.2.3")
attrs.UpdateString("policyId.profile", "PA_AD_RB_v2_3")

crypt.SigningAttributes = attrs.Emit

'  The input file can be any type of file.
Dim inFile As String = "toBeSigned.pdf"
Dim outFile As String = "signed.pdf.p7s"

success = crypt.CreateP7M(inFile, outFile)
If success = False Then
    Log(crypt.LastErrorText)
    Return
End If


Log("Success.")