(Go) PKCS11 Export Public Key from HSM

See more PKCS11 Examples

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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    // 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.

    pkcs11 := chilkat.NewPkcs11()

    // 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.SetSharedLibPath("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.
    pin := "0000"
    userType := 1
    success := pkcs11.QuickSession(userType,pin)
    if success == false {
        fmt.Println(pkcs11.LastErrorText())
        pkcs11.DisposePkcs11()
        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.
    jsonTemplate := chilkat.NewJsonObject()

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

    pubKeyHandle := pkcs11.FindObject(jsonTemplate)
    if pubKeyHandle == 0 {
        fmt.Println(pkcs11.LastErrorText())
        pkcs11.DisposePkcs11()
        jsonTemplate.DisposeJsonObject()
        return
    }

    // Export to a Chilkat public key object.
    pubKey := chilkat.NewPublicKey()
    success = pkcs11.ExportPublicKey(pubKeyHandle,pubKey)
    if success == false {
        fmt.Println(pkcs11.LastErrorText())
        pkcs11.DisposePkcs11()
        jsonTemplate.DisposeJsonObject()
        pubKey.DisposePublicKey()
        return
    }

    // Get the public key as PKCS8 PEM.
    fmt.Println(*pubKey.GetPem(false))

    pkcs11.Logout()
    pkcs11.CloseSession()

    pkcs11.DisposePkcs11()
    jsonTemplate.DisposeJsonObject()
    pubKey.DisposePublicKey()