DataFlex

PKCS11 Find All Certificates on Smart Card or USB Token

See more PKCS11 Examples

Sample code showing how to examine all the certificates on a smart card or USB token.

Note: This example requires Chilkat v9.5.0.88 or later.

DataFlex

Use ChilkatAx-win32.pkg

Procedure Test
    Boolean iSuccess
    Handle hoPkcs11
    Integer iSlotID
    Boolean iReadWrite
    Integer iUserType
    String sPin
    Integer iNumCerts
    String sPrivateKeyNote
    Variant vCert
    Handle hoCert
    Integer i
    String sTemp1
    Boolean bTemp1

    Move False To iSuccess

    // 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.

    Get Create (RefClass(cComChilkatPkcs11)) To hoPkcs11
    If (Not(IsComObjectCreated(hoPkcs11))) Begin
        Send CreateComObject of hoPkcs11
    End

    // 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)
    Set ComSharedLibPath Of hoPkcs11 To "aetpkss1.dll"

    Get ComInitialize Of hoPkcs11 To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoPkcs11 To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // Pass -1 for the slotID to open a session on the first non-empty slot.
    Move -1 To iSlotID

    // Open a session.
    Move True To iReadWrite
    Get ComOpenSession Of hoPkcs11 iSlotID iReadWrite To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoPkcs11 To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // 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".
    Move 1 To iUserType
    Move "0000" To sPin
    Get ComLogin Of hoPkcs11 iUserType sPin To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoPkcs11 To sTemp1
        Showln sTemp1
        Get ComCloseSession Of hoPkcs11 To iSuccess
        Procedure_Return
    End

    // Call FindAllCerts to find all certificates on the smart card or USB token.
    Get ComFindAllCerts Of hoPkcs11 To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoPkcs11 To sTemp1
        Showln sTemp1
        Get ComCloseSession Of hoPkcs11 To iSuccess
        Procedure_Return
    End

    // The NumCerts property is set by FindAllCerts.
    Get ComNumCerts Of hoPkcs11 To iNumCerts
    Showln "Number of certs: " iNumCerts

    Get Create (RefClass(cComChilkatCert)) To hoCert
    If (Not(IsComObjectCreated(hoCert))) Begin
        Send CreateComObject of hoCert
    End
    Move 0 To i
    While (i < iNumCerts)
        Get pvComObject of hoCert to vCert
        Get ComGetCert Of hoPkcs11 i vCert To iSuccess
        Move "" To sPrivateKeyNote
        Get ComHasPrivateKey Of hoCert To bTemp1
        If (bTemp1 = True) Begin
            Move "(has private key)" To sPrivateKeyNote
        End

        Get ComSubjectDN Of hoCert To sTemp1
        Showln i ": " sPrivateKeyNote " " sTemp1
        Get ComIssuerDN Of hoCert To sTemp1
        Showln i ": issuer: " sTemp1
        Showln "----"
        Move (i + 1) To i
    Loop

    // Revert to an unauthenticated session by calling Logout.
    Get ComLogout Of hoPkcs11 To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoPkcs11 To sTemp1
        Showln sTemp1
        Get ComCloseSession Of hoPkcs11 To iSuccess
        Procedure_Return
    End

    // When finished, close the session.
    // It is important to close the session (memory leaks will occur if the session is not properly closed).
    Get ComCloseSession Of hoPkcs11 To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoPkcs11 To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Showln "Success."


End_Procedure