(VB.NET) Create .p7s using Smart Card or USB Token

Demonstrates how to create a .p7s using a certificate stored on a smart card or USB token.

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

Dim crypt As New Chilkat.Crypt2

' Use a certificate on a smartcard or USB token.
Dim cert As New Chilkat.Cert

' Provide the smartcard PIN.
cert.SmartCardPin = "000000"

' Load the certificate on the smartcard currently in the reader (or on the USB token).
Dim success As Boolean = cert.LoadFromSmartcard("")
If (success <> True) Then
    Debug.WriteLine(cert.LastErrorText)
    Exit Sub
End If


' Provide the certificate for signing.
success = crypt.SetSigningCert(cert)
If (success <> True) Then
    Debug.WriteLine(crypt.LastErrorText)
    Exit Sub
End If


' Indicate that SHA-256 should be used.
crypt.HashAlgorithm = "sha256"

' Specify the signed attributes to be included.
Dim jsonSignedAttrs As New Chilkat.JsonObject
jsonSignedAttrs.UpdateInt("contentType",1)
jsonSignedAttrs.UpdateInt("signingTime",1)
jsonSignedAttrs.UpdateInt("messageDigest",1)
jsonSignedAttrs.UpdateInt("signingCertificateV2",1)
crypt.SigningAttributes = jsonSignedAttrs.Emit()

Dim inFile As String = "qa_data/xml/IT01234567890_11002.xml"
Dim sigFile As String = "qa_output/IT01234567890_11002.xml.p7s"

' Create the .p7s, which is a signature file that does not embed the original data.
' (To create a signature file that also embeds the original data, call CreateP7M instead)
success = crypt.CreateP7S(inFile,sigFile)
If (success = False) Then
    Debug.WriteLine(crypt.LastErrorText)
    Exit Sub
End If


Debug.WriteLine("Success.")