Lua

Load Default Certificate from Smart Card or Token

See more Certificates Examples

Chilkat contains internal logic to examine a connected smart card or USB token, and will make decisions based on make/model to successfully interact with the hardware. When faced with a new smartcard or token, the best starting point is to call LoadFromSmartcard with an empty string argument to see what Chilkat discovers. Lua

local chilkat = require("chilkat")

local cert = chilkat.Cert.new()

-- If you know the smart card PIN, it's good to set it prior to loading from the smartcard/USB token.
cert.smart_card_pin = "12345678"

-- To let Chilkat discover what smartcard or token is connected, pass an empty string to LoadFromSmartcard.
-- When testing in this way, it's best to have only a single smartcard or token connected to the system.
local success = cert:load_from_smartcard("")
if not success then
    print(cert.last_error_text)
    print("Certificate not loaded.")
    return
end

-- The LastErrorText property on all Chilkat objects will contain
-- information even when the method call is successful.
-- You can examine the LastErrorText to see what Chilkat found and
-- what decisions were made.
--
-- For example, if a certificate was successfully loaded via LoadFromSmartcard,
-- but then signing failed, such as w/ Pdf, XmlDSig, CAdES, etc.,
-- then we would want to examine the LastErrorText from the call to
-- LoadFromSmartcard to get detailed information about the card.
print(cert.last_error_text)

print("Found: " .. cert.subject_dn .. " serial=" .. cert.serial_number)