(Excel) CAdES BES Detached Signature

Demonstrates how to create a CAdES BES detached signature file (.p7s).

Download Excel Class Modules Chilkat Excel Class Modules

' This example assumes the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

Dim crypt As Chilkat.Crypt2
Set crypt = Chilkat.NewCrypt2

' Use a digital certificate and private key from a PFX file (.pfx or .p12).

pfxPath = "/Users/chilkat/testData/pfx/acme.pfx"

pfxPassword = "test123"

Dim cert As Chilkat.Cert
Set cert = Chilkat.NewCert

success = cert.LoadPfxFile(pfxPath,pfxPassword)
If (success <> True) Then
    Debug.Print cert.LastErrorText
    Exit Sub
End If

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

' The CadesEnabled property applies to all methods that create PKCS7 signatures. 
' To create a CAdES-BES signature, set this property equal to true. 
crypt.CadesEnabled = True

' We can sign any type of file, creating a .p7s as output:

inFile = "/Users/chilkat/testData/pdf/sample.pdf"

sigFile = "/Users/chilkat/testData/p7s/sample.p7s"

' Create the detached CAdES-BES signature:
success = crypt.CreateP7S(inFile,sigFile)
If (success = False) Then
    Debug.Print crypt.LastErrorText
    Exit Sub
End If

success = crypt.VerifyP7S(inFile,sigFile)
If (success = False) Then
    Debug.Print crypt.LastErrorText
    Exit Sub
End If

Debug.Print "Success!"