Lua Requires Chilkat v9.5.0.97+

PKCS11 Sign PDF with Smart Card with 2 PINs

See more PKCS11 Examples

Shows how to sign a PDF using a smart card that has one pin for USER, and a 2nd PIN for signing. Lua

local chilkat = require("chilkat")

-- 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.

local pkcs11 = chilkat.Pkcs11.new()

pkcs11.shared_lib_path = "C:/Program Files (x86)/Gemalto/IDGo 800 PKCS#11/IDPrimePKCS1164.dll"

-- --------------------------
-- Provide the user PIN here.
-- --------------------------
local user_pin = "0000"
local userType = 1

-- Establish a PKCS11 logged-on session using the driver (.so, .dylib, or .dll) as specified in the SharedLibPath above.
local success = pkcs11:quick_session(userType, user_pin)
if not success then
    print(pkcs11.last_error_text)
    return
end

-- -----------------------------------------------------------
-- Also indicate the context-specific PIN required for signing.
-- -----------------------------------------------------------
pkcs11.sig_context_pin = "1234"

-- Get the certificate (on the smart card) that has a private key.
-- There are other ways to locate a certificate on the HSM.
-- This example assumes there is a single certificate w/ private key.
local cert = chilkat.Cert.new()
success = pkcs11:find_cert("privateKey", "", cert)
if success then
    print("Cert with private key: " .. cert.subject_cn)
else
    print("No certificates having a private key were found.")
    success = pkcs11:close_session()
    return
end

-- --------------------------------------------------------------------------
-- At this point, we have the cert to be used for signing.
-- Our PDF signing code is the same as for a cert obtained from any other source..

local pdf = chilkat.Pdf.new()

-- Load a PDF to be signed.
success = pdf:load_file("qa_data/pdf/hello.pdf")
if not success then
    print(pdf.last_error_text)
    success = pkcs11:close_session()
    return
end

local json = chilkat.JsonObject.new()

json:update_int("page", 1)
json:update_string("appearance.y", "top")
json:update_string("appearance.x", "left")
json:update_string("appearance.fontScale", "10.0")
json:update_string("signingAlgorithm", "pss")
json:update_string("hashAlgorithm", "sha256")

local i = 0
json.i = i
json:update_string("appearance.text[i]", "Digitaly signed by: Xyz Widgets, Inc.")
i = i + 1
json.i = i
json:update_string("appearance.text[i]", "current_dt")
i = i + 1
json.i = i
json:update_string("appearance.text[i]", "blah blah blah")

-- The certificate is internally linked to the Pkcs11 object, which is currently in an authenticated session.
success = pdf:set_signing_cert(cert)

success = pdf:sign_pdf(json, "qa_output/out.pdf")
if not success then
    print(pdf.last_error_text)
    success = pkcs11:close_session()
    return
end

-- --------------------------------------------------------------------------

-- Revert to an unauthenticated session by calling Logout.
success = pkcs11:logout()
if not success then
    print(pkcs11.last_error_text)
    success = pkcs11:close_session()
    return
end

-- When finished, close the session.
-- It is important to close the session (memory leaks will occur if the session is not properly closed).
success = pkcs11:close_session()
if not success then
    print(pkcs11.last_error_text)
    return
end

print("Success.")