Lua

Load a Public Key from a String

Demonstrates the Chilkat PublicKey.LoadFromString method, which loads a public key from a string. The only argument is the string. Chilkat examines the content and recognizes PEM public keys, unencrypted PEM private keys (taking only the public portion), XML, JWK, and more.

Background: This is the forgiving text loader: rather than requiring you to know the exact format, it inspects whatever string you provide and figures it out. A useful convenience is that it accepts an unencrypted private key too and keeps only the public half — handy when you have a key pair but need just the public key. Use it whenever the textual format is uncertain or varies by source.

Chilkat Lua Downloads

Download Chilkat for Lua

Lua

local chilkat = require("chilkat")

-- Demonstrates the PublicKey.LoadFromString method, which loads a public key from a string.  The
-- only argument is the string.  Chilkat examines the content and recognizes PEM public keys,
-- unencrypted PEM private keys (using only the public portion), XML, JWK, and more.

local pubKey = chilkat.PublicKey.new()

-- The PEM text of a public key.
local keyText = "-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkq...IDAQAB\n-----END PUBLIC KEY-----"

local success = pubKey:load_from_string(keyText)
if not success then
    print(pubKey.last_error_text)
    return
end

print("Loaded a " .. pubKey.key_type .. " public key.")