B4X Requires Chilkat v11.0.0+

PKCS11 Export Public Key from HSM

See more PKCS11 Examples

Demonstrates how to export a public key from a smartcard or token. B4X

Dim success As Boolean = False

'  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 ChilkatPkcs11
pkcs11.Initialize

'  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.
pkcs11.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.
Dim pin As String = "0000"
Dim userType As Int = 1
success = pkcs11.QuickSession(userType, pin)
If success = False Then
    Log(pkcs11.LastErrorText)
    Return
End If


'  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.
Dim jsonTemplate As ChilkatJsonObject
jsonTemplate.Initialize

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

Dim pubKeyHandle As Long = pkcs11.FindObject(jsonTemplate)
If pubKeyHandle = 0 Then
    Log(pkcs11.LastErrorText)
    Return
End If


'  Export to a Chilkat public key object.
Dim pubKey As ChilkatPublicKey
pubKey.Initialize
success = pkcs11.ExportPublicKey(pubKeyHandle, pubKey)
If success = False Then
    Log(pkcs11.LastErrorText)
    Return
End If


'  Get the public key as PKCS8 PEM.
Log(pubKey.GetPem(False))

pkcs11.Logout
pkcs11.CloseSession