Visual FoxPro

ScMinidriver - List Certificates on a Smart Card or USB Token

See more ScMinidriver Examples

Gets a list of certificates contained on a smart card or USB token. Visual FoxPro

LOCAL lnSuccess
LOCAL loScmd
LOCAL lcReaderName
LOCAL loStCerts
LOCAL lcCertPart
LOCAL lnNumCerts
LOCAL i

lnSuccess = 0

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

loScmd = CreateObject('Chilkat.ScMinidriver')

* Reader names (smart card readers or USB tokens) can be discovered
* via PCSC List Readers or PCSC Find Smart Cards
lcReaderName = "SCM Microsystems Inc. SCR33x USB Smart Card Reader 0"
lnSuccess = loScmd.AcquireContext(lcReaderName)
IF (lnSuccess = 0) THEN
    ? loScmd.LastErrorText
    RELEASE loScmd
    CANCEL
ENDIF

loStCerts = CreateObject('Chilkat.StringTable')

* We can choose one of the following items of information to get for each certificate:
* "subjectDN" -- Return the full distinguished name of the cert.
* "subjectDN_withTags" -- Same as above, but in a format that includes the subject part tags, such as the "CN=" in "CN=something"
* "subjectCN" -- Return just the common name part of the certificate's subject.
* "serial" -- Return the certificate serial number.
* "serial:issuerCN" -- return the certificate serial number + the issuer's common name, delimited with a colon char.
lcCertPart = "subjectCN"

lnSuccess = loScmd.ListCerts(lcCertPart,loStCerts)
IF (lnSuccess = 0) THEN
    ? loScmd.LastErrorText
    RELEASE loScmd
    RELEASE loStCerts
    CANCEL
ENDIF

lnNumCerts = loStCerts.Count
i = 0
DO WHILE i < lnNumCerts
    ? STR(i) + ": " + loStCerts.StringAt(i)
    i = i + 1
ENDDO

* Delete the context when finished with the card.
lnSuccess = loScmd.DeleteContext()
IF (lnSuccess = 0) THEN
    ? loScmd.LastErrorText
ENDIF

RELEASE loScmd
RELEASE loStCerts