(Swift 3,4,5...) 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.

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func chilkatTest() {
    // 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.

    let pkcs11 = CkoPkcs11()!

    // 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.
    var pin: String? = "0000"
    var userType: Int = 1
    var success: Bool = pkcs11.quickSession(userType, pin: pin)
    if success == false {
        print("\(pkcs11.lastErrorText!)")
        return
    }

    // 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.
    let jsonTemplate = CkoJsonObject()!

    // Find the public key with the label "Belgium eHealth".
    jsonTemplate.update("class", value: "public_key")
    jsonTemplate.update("label", value: "Belgium eHealth")

    var pubKeyHandle: UInt32 = pkcs11.findObject(jsonTemplate)
    if pubKeyHandle == 0 {
        print("\(pkcs11.lastErrorText!)")
        return
    }

    // Export to a Chilkat public key object.
    let pubKey = CkoPublicKey()!
    success = pkcs11.exportPublicKey(pubKeyHandle, pubKey: pubKey)
    if success == false {
        print("\(pkcs11.lastErrorText!)")
        return
    }

    // Get the public key as PKCS8 PEM.
    print("\(pubKey.getPem(false)!)")

    pkcs11.logout()
    pkcs11.closeSession()

}