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(VB.NET) PKCS11 Find Specific Certificate on Smart Card or USB TokenSee more PKCS11 ExamplesThis example code shows how to find a particular certificate on a smart card or USB token. Note: This example requires Chilkat v9.5.0.88 or later.
' This example requires the Chilkat API to have been previously unlocked. ' See Global Unlock Sample for sample code. ' Note: Chilkat's PKCS11 implementation runs on Windows, Linux, Mac OS X, and other supported operating systems. Dim pkcs11 As New Chilkat.Pkcs11 ' Set your shared lib path -- either a full path to the DLL, .so, or .dylib, ' or just the filename if the driver is in a location that can be automatically found. (Such as in C:\Windows\System32) pkcs11.SharedLibPath = "C:/Program Files (x86)/Gemalto/IDGo 800 PKCS#11/IDPrimePKCS1164.dll" Dim success As Boolean = pkcs11.Initialize() If (success = False) Then Debug.WriteLine(pkcs11.LastErrorText) Exit Sub End If ' Pass -1 for the slotID to open a session on the first non-empty slot. Dim slotID As Integer = -1 ' Open a session. Dim readWrite As Boolean = True success = pkcs11.OpenSession(slotID,readWrite) If (success = False) Then Debug.WriteLine(pkcs11.LastErrorText) Exit Sub End If ' Make it an authenticated session by calling Login. ' ' If we don't authenticate, then we won't be able to see the private keys, and thus ' we won't know which certificates have an associated private key stored on the smart card. ' The smart card PIN is passed to the Login method. ' userType 1 indicates a "Normal User". Dim userType As Integer = 1 Dim pin As String = "0000" success = pkcs11.Login(userType,pin) If (success = False) Then Debug.WriteLine(pkcs11.LastErrorText) success = pkcs11.CloseSession() Exit Sub End If ' -------------------------------------------------------------------------- ' The FindCert method can find a particular certificate in a number of different ways. ' I'll demonstrate some common ways.. ' 1) In many cases you'll be working with a smart card that contains one certificate that is to be used for ' signing, and it is the certificate that is associated with the private key also stored on the smart card (or USB token). ' There may be other certificates on the card, but these are the issuer certificates in the chain of authentication. ' You're just interested in getting the certificate with the private key. ' You can do it like this: Dim cert As New Chilkat.Cert ' Pass the keyword "privateKey" in the 1st argument, and an empty string in the 2nd arg. ' This returns the 1st certificate that has a private key. success = pkcs11.FindCert("privateKey","",cert) If (success = True) Then Debug.WriteLine("Cert with private key: " & cert.SubjectCN) Else Debug.WriteLine("No certificates having a private key were found.") End If ' 2) Find a certificate by the Subject Common Name success = pkcs11.FindCert("subjectCN","Chil application account (8c9be8e0-5544-4cd0-9062-290fbff353a7)",cert) If (success = True) Then Debug.WriteLine("Found: " & cert.SubjectCN) Else Debug.WriteLine("Not found: " & cert.SubjectCN) End If ' 3) Find a certificate by hex serial number success = pkcs11.FindCert("serial","5087bf1feda006af54a02f23a851104948acc26f",cert) If (success = True) Then Debug.WriteLine("Found: " & cert.SerialNumber) Else Debug.WriteLine("Not found: " & cert.SerialNumber) End If ' 4) Find a certificate by hex serial number and Issuer Common Name success = pkcs11.FindCert("serial:issuerCN","5087bf1feda006af54a02f23a851104948acc26f:Ibanity Production Third Party Application CA",cert) If (success = True) Then Debug.WriteLine("Found: " & cert.SubjectCN) Else Debug.WriteLine("Not found: " & cert.SubjectCN) End If ' -------------------------------------------------------------------------- ' Revert to an unauthenticated session by calling Logout. success = pkcs11.Logout() If (success = False) Then Debug.WriteLine(pkcs11.LastErrorText) success = pkcs11.CloseSession() Exit Sub End If ' When finished, close the session. ' It is important to close the session (memory leaks will occur if the session is not properly closed). success = pkcs11.CloseSession() If (success = False) Then Debug.WriteLine(pkcs11.LastErrorText) Exit Sub End If Debug.WriteLine("Success.") |
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