Lua

SFTP Public-Key Authentication (id_ed25519)

See more SFTP Examples

Demonstrates how to authenticate with an SSH/SFTP server using publickey authentication with an Ed25519 private key (id_ed25519). Lua

local chilkat = require("chilkat")

-- This example assumes the Chilkat API to have been previously unlocked.
-- See Global Unlock Sample for sample code.

local key = chilkat.SshKey.new()

-- The id_ed25519 file should contain something like this:
-- (You can open it in a text editor..)

-- -----BEGIN OPENSSH PRIVATE KEY-----
-- b3BlbnNzaC1rZXktdjEAAAAACmFlczI1Ni1jdHIAAAAGYmNyeXB0AAAAGAAAABDIeK9+Xw
-- 6Do9gnhtrJu5iJAAAAZAAAAAEAAAAzAAAAC3NzaC1lZDI1NTE5AAAAIMh/Ge7fjQCssmVd
-- BqjYZbRAI0pY8IrnB6J1yLetq34OAAAAoMVP7cvy4hTiAINA3I4v55OonkpKza8mzfUW18
-- RDQeYL3ovCVaAYOGcCpf/SW3QiY6tnXq+5WDEfJ7Z/kQ0nl2+1wSLOytxpyO+IY0rRtLrX
-- 6e/agR4nbZpt/MFG6xqcNASbtDgg+9IWGvDrtXOLFofx07/zml+UjFL0tXRpCjOxeqKyXH
-- t8SRgdT97d9/bYPwapaXY+b2DVVy5/LVx4Sq8=
-- -----END OPENSSH PRIVATE KEY-----

local privKeyText = key:load_text("c:/temp/id_ed25519")
if not key.last_method_success then
    print(key.last_error_text)
    return
end

-- If your private key was saved encrypted, then you'll need the password.
-- In this example, the password "blahblah" is valid for the above key -- which is a real Ed25519 key generated/saved from puttygen.
key.password = "blahblah"

local success = key:from_open_ssh_private_key(privKeyText)
if not success then
    print(key.last_error_text)
    return
end

local sftp = chilkat.SFtp.new()

-- Set some timeouts, in milliseconds:
sftp.connect_timeout_ms = 5000
sftp.idle_timeout_ms = 15000

local hostname = "sftp.example.com"
local port = 22
success = sftp:connect(hostname, port)
if not success then
    print(sftp.last_error_text)
    return
end

-- Authenticate with the SSH server.  Chilkat SFTP supports
-- both password-based authenication as well as public-key
-- authentication.
success = sftp:authenticate_pk("myLogin", key)
if not success then
    print(sftp.last_error_text)
    return
end

print(sftp.last_error_text)
print("Public-Key Authentication Successful!")

-- Now go do whatever you're app needs to do...