PureBasic

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

PureBasic

IncludeFile "CkCodeSign.pb"
IncludeFile "CkCert.pb"
IncludeFile "CkJsonObject.pb"

Procedure ChilkatExample()

    success.i = 0

    ; 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"
    ;   }
    ; }

    json.i = CkJsonObject::ckCreate()
    If json.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkJsonObject::ckUpdateString(json,"hashAlg","sha256")
    CkJsonObject::ckUpdateBool(json,"timestampToken.enabled",1)
    CkJsonObject::ckUpdateString(json,"timestampToken.tsaUrl","http://timestamp.digicert.com")
    CkJsonObject::ckUpdateBool(json,"timestampToken.requestTsaCert",1)
    CkJsonObject::ckUpdateString(json,"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.
    cert.i = CkCert::ckCreate()
    If cert.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    ; Yubico YubiKey OTP+FIDO+CCID 0, default PIN = 123456
    CkCert::setCkSmartCardPin(cert, "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 = CkCert::ckLoadFromSmartcard(cert,"")
    If success = 0
        Debug CkCert::ckLastErrorText(cert)
        CkJsonObject::ckDispose(json)
        CkCert::ckDispose(cert)
        ProcedureReturn
    EndIf

    ; 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.
    exePath.s = "C:/someOtherDir/HelloWorld.exe"

    signer.i = CkCodeSign::ckCreate()
    If signer.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    ; If successful, the following call will apply the signature to the EXE (or DLL).
    success = CkCodeSign::ckAddSignature(signer,exePath,cert,json)
    If success = 0
        Debug CkCodeSign::ckLastErrorText(signer)
        CkJsonObject::ckDispose(json)
        CkCert::ckDispose(cert)
        CkCodeSign::ckDispose(signer)
        ProcedureReturn
    EndIf

    Debug "Successfully applied the Authenticode signature."


    CkJsonObject::ckDispose(json)
    CkCert::ckDispose(cert)
    CkCodeSign::ckDispose(signer)


    ProcedureReturn
EndProcedure