(Visual FoxPro) PKCS11 Export Public Key from HSM

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Demonstrates how to export a public key from a smartcard or token.

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

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

LOCAL loPkcs11
LOCAL lcPin
LOCAL lnUserType
LOCAL lnSuccess
LOCAL loJsonTemplate
LOCAL lnPubKeyHandle
LOCAL loPubKey

* 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.

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Pkcs11')
loPkcs11 = CreateObject('Chilkat.Pkcs11')

* Use the PKCS11 driver (.dll, .so, .dylib) for your particular HSM.
* (The format of the path will change with the operating system.  Obviously, "C:/" is not used on non-Windows systems.
loPkcs11.SharedLibPath = "C:/Program Files (x86)/Gemalto/IDGo 800 PKCS#11/IDPrimePKCS1164.dll"

* Establish a logged-on session. (We can typically skip the login by passing an empty PIN if only working with public keys)
* Use your actual PIN here, or an empty string to skip login.
lcPin = "0000"
lnUserType = 1
lnSuccess = loPkcs11.QuickSession(lnUserType,lcPin)
IF (lnSuccess = 0) THEN
    ? loPkcs11.LastErrorText
    RELEASE loPkcs11
    CANCEL
ENDIF

* Get the handle of the public key we wish to export.
* You can find public keys in many different ways.
* This example will search for a public key by label.

* Provide a template to find a PKCS11 object.
* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.JsonObject')
loJsonTemplate = CreateObject('Chilkat.JsonObject')

* Find the public key with the label "Belgium eHealth".
loJsonTemplate.UpdateString("class","public_key")
loJsonTemplate.UpdateString("label","Belgium eHealth")

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

* Export to a Chilkat public key object.
* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.PublicKey')
loPubKey = CreateObject('Chilkat.PublicKey')
lnSuccess = loPkcs11.ExportPublicKey(lnPubKeyHandle,loPubKey)
IF (lnSuccess = 0) THEN
    ? loPkcs11.LastErrorText
    RELEASE loPkcs11
    RELEASE loJsonTemplate
    RELEASE loPubKey
    CANCEL
ENDIF

* Get the public key as PKCS8 PEM.
? loPubKey.GetPem(0)

loPkcs11.Logout()
loPkcs11.CloseSession()

RELEASE loPkcs11
RELEASE loJsonTemplate
RELEASE loPubKey