Visual FoxPro

PKCS11 Find Private Key by Label

See more PKCS11 Examples

Demonstrates how to find a private key based on a user-specified label.

Note: This example requires Chilkat v9.5.0.96 or later.

Visual FoxPro

LOCAL lnSuccess
LOCAL loPkcs11
LOCAL lcPin
LOCAL lnUserType
LOCAL loJsonTemplate
LOCAL lnPrivKeyHandle

lnSuccess = 0

* 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.

loPkcs11 = CreateObject('Chilkat.Pkcs11')

* Use the PKCS11 driver (.dll, .so, .dylib) for your particular HSM.
* For example:
loPkcs11.SharedLibPath = "C:/Program Files (x86)/Gemalto/IDGo 800 PKCS#11/IDPrimePKCS11.dll"

* Use your HSM's PIN.
lcPin = "0000"

* Normal user = 1
lnUserType = 1

* Establish a logged-on user session with the HSM.
lnSuccess = loPkcs11.QuickSession(lnUserType,lcPin)
IF (lnSuccess = 0) THEN
    ? loPkcs11.LastErrorText
    RELEASE loPkcs11
    CANCEL
ENDIF

* Provide a template to find a PKCS11 object.
loJsonTemplate = CreateObject('Chilkat.JsonObject')

* Find an RSA private key with the label "MySshKey".
* Here's an example of how the key was originally imported: 
* PKCS11 Import SSH Key
loJsonTemplate.UpdateString("class","private_key")
loJsonTemplate.UpdateString("key_type","rsa")
loJsonTemplate.UpdateString("label","MySshKey")

lnPrivKeyHandle = loPkcs11.FindObject(loJsonTemplate)
IF (lnPrivKeyHandle = 0) THEN
    ? loPkcs11.LastErrorText
    RELEASE loPkcs11
    RELEASE loJsonTemplate
    CANCEL
ENDIF

* The private key handle is only valid during the PKCS11 session.
* If you wish to use the private key in another PKCS11 session,
* you'll first need to find it.  See:  
? "private key handle: " + STR(lnPrivKeyHandle)

* Do whatever you wish with the private key handle...
* ...
* ...

loPkcs11.Logout()
loPkcs11.CloseSession()

RELEASE loPkcs11
RELEASE loJsonTemplate