VB.NET

Authenticode Sign using Smartcard or USB Token

See more Code Signing Examples

Demonstrates how to Authenticode sign an EXE or DLL using a smartcard or USB token, such as a Yubikey.

Note: Chilkat's code signing class was added in v9.5.0.97

VB.NET

Dim success As Boolean = False

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

' First create the following JSON to specify that SHA256 is to be used,
' and provide timestamp server information.

' {
'   "hashAlg": "sha256",
'   "timestampToken": {
'     "enabled": true,
'     "tsaUrl": "http://timestamp.digicert.com",
'     "requestTsaCert": true,
'     "hashAlg": "sha256"
'   }
' }

Dim json As New Chilkat.JsonObject
json.UpdateString("hashAlg","sha256")
json.UpdateBool("timestampToken.enabled",True)
json.UpdateString("timestampToken.tsaUrl","http://timestamp.digicert.com")
json.UpdateBool("timestampToken.requestTsaCert",True)
json.UpdateString("timestampToken.hashAlg","sha256")

' The only difference in signing with a smartcard or USB token
' is that the cert is loaded from a smartcard or USB token, instead of a PFX or from elsewhere
' such as from the Windows certificate store.
Dim cert As New Chilkat.Cert

' Yubico YubiKey OTP+FIDO+CCID 0, default PIN = 123456
cert.SmartCardPin = "123456"

' Assuming you have the Yubikey inserted into the USB on the computer...
' and there is only 1 signing certificate on the Yubikey, then just load from
' the "smartcard".  (assuming you don't have additional smartcards or USB tokens plugged in)
success = cert.LoadFromSmartcard("")
If (success = False) Then
    Debug.WriteLine(cert.LastErrorText)
    Exit Sub
End If


' If the smartcard/token has several possible certificates that can be used for signing,
' then see the online documentation for the LoadFromSmartcard method,
' and also see the online documentation and examples for Chilkat Pkcs11 and ScMinidriver.
' There are many possible ways to load a Chilkat certificate object with a cert (and associated private key)
' from a variety of sources.  The only coding difference for any signing function in Chilkat,
' whether it be a PDF, XmlDSig, CMS, etc. is in how the cert is loaded.

' You can sign .exe or .dll files.
Dim exePath As String = "C:/someOtherDir/HelloWorld.exe"

Dim signer As New Chilkat.CodeSign

' If successful, the following call will apply the signature to the EXE (or DLL).
success = signer.AddSignature(exePath,cert,json)
If (success = False) Then
    Debug.WriteLine(signer.LastErrorText)
    Exit Sub
End If


Debug.WriteLine("Successfully applied the Authenticode signature.")