(Visual Basic 6.0) Open Smartcard Certificate Store (or from USB Token)

Demonstrates how to open the certificate store of the smart card currently in the reader (or the USB token). Iterates over the certs found on the smartcard.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Dim certStore As New ChilkatCertStore

' Access the certificates on the smart card or USB token via the Chilkat certificate store class.
' Note: Always pass the empty string to OpenSmartcard.

' ---------------------------------------------------------------------------------------------------------
' The following is true only for Chilkat v10.1.1 and earlier:
' Also, the Chilkat CertStore class can only use MS CNG or CryptoAPI.
' Some smartcard/USB token drivers only support PKCS11 or ScMinidriver.
' You may get better results using Chilkat.Cert.LoadFromSmartcard because
' Cert.LoadFromSmartcard can automatically detect and utilize PKCS11, ScMinidriver, CNG, and CryptoAPI.
' ---------------------------------------------------------------------------------------------------------
' Starting in Chilkat versions after v10.1.1, OpenSmartcard also works with
' Apple Keychain and PKCS11 drivers on Windows, Linux, and MacOS.
' ---------------------------------------------------------------------------------------------------------

Dim success As Long
success = certStore.OpenSmartcard("")
If (success = 0) Then
    Debug.Print certStore.LastErrorText
    Exit Sub
End If

Debug.Print certStore.LastErrorText

' Iterate over certificates on the smartcard.
Dim i As Long
i = 0
Dim numCerts As Long
numCerts = certStore.NumCertificates
Debug.Print "numCerts = " & numCerts

Do While (i < numCerts)
    Dim cert As ChilkatCert
    Set cert = certStore.GetCertificate(i)
    Debug.Print cert.SubjectCN
    Debug.Print cert.SerialNumber
    If (cert.IsRsa() = 1) Then
        Debug.Print "key type is RSA"
    End If

    If (cert.IsEcdsa() = 1) Then
        Debug.Print "key type is ECDSA"
    End If

    Debug.Print "has private key: " & cert.HasPrivateKey()
    Debug.Print "----"

    i = i + 1
Loop