Lua

Load an Encrypted Private Key from a PEM File

Demonstrates the Chilkat PrivateKey.LoadEncryptedPemFile method, which loads a private key from a file, using a password when the key is encrypted. The first argument is the file path and the second is the password.

Note: The file path is relative to the application's current working directory. Absolute paths may also be used. Supply the path to your own key file.

Background: The file-based encrypted loader — the natural choice for a .pem key stored with a passphrase, as most deployment keys are. It decrypts encrypted PKCS #8 PEM and also accepts unencrypted files, so it works whether or not the specific file is protected. Supply the passphrase from a secure source.

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Lua

local chilkat = require("chilkat")

-- Demonstrates the PrivateKey.LoadEncryptedPemFile method, which loads a private key from a file,
-- using a password when the key is encrypted.  The 1st argument is the file path and the 2nd is
-- the password.

local privKey = chilkat.PrivateKey.new()

-- The key password is not hard-coded in a real application; obtain it from an interactive
-- prompt, environment variable, or a secrets vault.
local password = "myKeyPassword"

local success = privKey:load_encrypted_pem_file("qa_data/private_encrypted.pem", password)
if not success then
    print(privKey.last_error_text)
    return
end

print("Loaded a " .. privKey.key_type .. " private key.")