Lua Requires Chilkat v9.5.0.66+

Load ECC Private Key from JWK Format (JSON Web Key)

See more ECC Examples

Demonstrates how to load an ECC private key from JWK (JSON Web Key) format. Lua

local chilkat = require("chilkat")

-- First build a JWK sample to load..
local json = chilkat.JsonObject.new()
json:update_string("kty", "EC")
json:update_string("crv", "P-256")
json:update_string("x", "oBUyo8CQAFPeYPvv78ylh5MwFZjTCLQeb042TjiMJxE")
json:update_string("y", "vvQyxZkUjJQUPU_0bCy3Pj5qQdfu8jwEfqEeYGZ95CU")
json:update_string("d", "EbVzfPnZPxfAyxqEZV05laAoJAl-_6Xt2O4mOB611sM")

-- The JSON contains the following:
-- {
--   "kty": "EC",
--   "crv": "P-256",
--   "x": "oBUyo8CQAFPeYPvv78ylh5MwFZjTCLQeb042TjiMJxE",
--   "y": "vvQyxZkUjJQUPU_0bCy3Pj5qQdfu8jwEfqEeYGZ95CU",
--   "d": "EbVzfPnZPxfAyxqEZV05laAoJAl-_6Xt2O4mOB611sM"
-- }

-- Note: The JSON can contain other members, such as "use", "kid", or anything else.  These will be ignored.
json.emit_compact = false

-- Show the JWK string to be loaded:
local jwkStr = json:emit()

local privKey = chilkat.PrivateKey.new()
local success = privKey:load_jwk(jwkStr)
if not success then
    print(privKey.last_error_text)
    return
end

-- OK.. the JWK is loaded.  It can be used in whatever way desired...

-- The key can be retrieved in any other format, such as XML or PEM..
print(privKey:get_xml())

-- XML output:
-- <ECCKeyValue curve="secp256r1">MHcCAQEEIBG1c3z52T8XwMsahGVdOZWgKCQJfv+l7djuJjgetdbDoAoGCCqGSM49AwEHoEQDQgAEoBUyo8CQAFPeYPvv78ylh5MwFZjTCLQeb042TjiMJxG+9DLFmRSMlBQ9T/RsLLc+PmpB1+7yPAR+oR5gZn3kJQ==</ECCKeyValue>

print(privKey:get_pkcs8_encrypted_pem("secret"))

-- PEM output
--
-- -----BEGIN ENCRYPTED PRIVATE KEY-----
-- MIHFMEAGCSqGSIb3DQEFDTAzMBsGCSqGSIb3DQEFDDAOBAiku9rUjavLQQICCAAw
-- FAYIKoZIhvcNAwcECGsl/5nLai+JBIGAVIqKAdfcRQNLl1t3x+n8OZ92d1H+qgjS
-- Hs83wn2joJK4nlqy+rzosZxQ3e8NTJQyUEWZWcjqMj/N0phS3QWtcD/qbda5oEcv
-- QgtU60cZ4ql3truefAmlZz2PdpOfqtYhxlvjJQxnyojn4ntj69OwLOt9SZbaBQQi
-- KUL8KXT4Pq8=
-- -----END ENCRYPTED PRIVATE KEY-----