(Go) PKCS11 Import an Existing RSA Public Key onto the HSM

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Demonstrates how to import an existing RSA Public Key onto a smart card 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.
    pin := "0000"
    userType := 1
    success := pkcs11.QuickSession(userType,pin)
    if success == false {
        fmt.Println(pkcs11.LastErrorText())
        pkcs11.DisposePkcs11()
        return
    }

    // Generate a new 2048-bit RSA key.
    rsa := chilkat.NewRsa()
    success = rsa.GenerateKey(2048)
    if success == false {
        fmt.Println(rsa.LastErrorText())
        pkcs11.DisposePkcs11()
        rsa.DisposeRsa()
        return
    }

    // Get the public key information as XML, so we can access the modulus and exponent.
    xml := chilkat.NewXml()
    xml.LoadXml(*rsa.ExportPublicKey())

    attrs := chilkat.NewJsonObject()
    // Specify the type of object, and the type of key.
    attrs.UpdateString("class","CKO_PUBLIC_KEY")
    attrs.UpdateString("key_type","CKK_RSA")
    // Add an optional label if desired.
    attrs.UpdateString("label","RSA Public Key 1")
    // Allow the key to be use for verify, wrapping, and encryption operations.
    attrs.UpdateBool("verify",true)
    attrs.UpdateBool("wrap",true)
    attrs.UpdateBool("encrypt",true)

    // Make this a session-only public key.
    // To store the public key on the token so that it persists after the PKCS11 session, set token = true.
    attrs.UpdateBool("token",false)

    // Provide the RSA public key material
    attrs.UpdateString("modulus",*xml.GetChildContent("Modulus"))
    attrs.UpdateString("public_exponent",*xml.GetChildContent("Exponent"))

    // Create the RSA public key.
    // Returns the PKCS11 object handle of the created key.
    objHandle := pkcs11.CreatePkcs11Object(attrs)
    if objHandle == 0 {
        fmt.Println(pkcs11.LastErrorText())
        fmt.Println("Failed.")
    } else {
        fmt.Println("PKCS11 object handle = ", objHandle)
        fmt.Println("Successfully imported an RSA key..")
    }

    pkcs11.Logout()
    pkcs11.CloseSession()

    pkcs11.DisposePkcs11()
    rsa.DisposeRsa()
    xml.DisposeXml()
    attrs.DisposeJsonObject()