ssh-keyup 1.1.1

Passwordless SSH setup and ssh-copy-id alternative for Raspberry Pi, NVIDIA Jetson or any Linux device

ssh-keyup

Set up passwordless SSH on Raspberry Pi, NVIDIA Jetson or any Linux device in one command.

Tired of juggling ssh-keygen, ssh-copy-id (missing on Windows) and ~/.ssh/config edits every time you set up a new device?

ssh-keyup handles all three in a single interactive session.

Quickstart

Install globally with pip:

pip install ssh-keyup

ssh-keyup   # ready to use anywhere

[!TIP] If ssh-keyup is missing or runs an old version after install, the new script sits in a folder outside PATH (pip warns about this). Add that folder to PATH or use pipx: pipx install ssh-keyup.

Or run directly without installing:

git clone https://github.com/Kurokesu/ssh-keyup.git
cd ssh-keyup
python ssh_keyup.py   # Windows
python3 ssh_keyup.py  # Linux

Follow the prompts, enter the remote password once and you're done.

SSH from terminal:

ssh mypi   # no password, ever again

Or open VSCode Remote - SSH, your ~/.ssh/config is already set up. Press Ctrl+Shift+P, select Remote-SSH: Connect to Host, pick your alias and get a full IDE on your remote device, no password:

Skip the prompts by passing arguments:

ssh-keyup pi@192.168.1.23 mypi   # user, host and alias in one go

Or configure a whole fleet:

for host in 192.168.1.10 192.168.1.11 192.168.1.12; do
  ssh-keyup pi@$host
done

Flags (--host, --user, --alias) work too, see ssh-keyup --help.

List or remove entries ssh-keyup manages:

ssh-keyup --list
ssh-keyup --remove mypi   # deletes its key pair too

Why?

# without ssh-keyup (repeat for every new device)
ssh-keygen -t ed25519 -N "" -f ~/.ssh/id_ed25519_rpi5
scp ~/.ssh/id_ed25519_rpi5.pub trinity@192.168.1.23:~/
ssh trinity@192.168.1.23 "mkdir -p ~/.ssh && chmod 700 ~/.ssh"
ssh trinity@192.168.1.23 "cat ~/id_ed25519_rpi5.pub >> ~/.ssh/authorized_keys && chmod 600 ~/.ssh/authorized_keys && rm ~/id_ed25519_rpi5.pub"
nano ~/.ssh/config # add Host entry manually
...

# with ssh-keyup
ssh-keyup

Prerequisites

Python 3.8+ and OpenSSH tools (ssh, ssh-keygen) must be in PATH.

• Windows 10/11: Install Python from python.org or the Microsoft Store. OpenSSH Client is included via Settings > Optional Features or ships with Git for Windows.
• Linux: sudo apt install python3 openssh-client (usually pre-installed).

Features

• Generates a per-host Ed25519 key pair (~/.ssh/id_ed25519_<alias>)
• Deploys public key to remote host in a single SSH session, only one password prompt
• Never touches your password. ssh-keyup only pipes the public key and SSH handles password authentication directly through its own terminal
• Adds a named entry to ~/.ssh/config, works instantly with ssh <alias> and VSCode Remote SSH
• Detects and recovers from host key mismatches (common after reflashing)
• Handles re-runs gracefully: reuses existing keys or offers regeneration, detects duplicate config entries
• Works with any device reachable over SSH: Raspberry Pi, NVIDIA Jetson, Orange Pi, VMs, servers
• Zero Python dependencies, standard library only. Uses system OpenSSH (ssh, ssh-keygen)
• Installs via pip or runs as a single script