A live buildroot based Linux distribution designed for managing secrets offline.
Go to file
Lance Vick 96ea9054f9
track dist/airgap.iso in lfs
2024-08-02 21:38:46 -07:00
audits Updated cure53 audit with corrected authors list 2021-11-04 15:23:16 -07:00
config Working EFI/Bios Stagex boot 2024-06-18 01:45:21 -07:00
rootfs feat: working sd card automounting with via udev 2024-06-27 00:14:34 -07:00
sdcard Virtual sd card support 2024-06-26 00:46:56 -07:00
.dockerignore Create .dockerignore, symlinked from .gitignore 2021-06-20 18:39:14 -04:00
.gitattributes track dist/airgap.iso in lfs 2024-08-02 21:38:46 -07:00
.gitignore compatibility fixes with new toolchain version 2023-02-12 03:00:11 -08:00
.gitmodules refactor: replace buildroot/toolchain with stagex 2024-03-01 10:51:15 -08:00
Containerfile hash lock all the things 2024-08-02 18:22:16 -07:00
LICENSE.md add MIT license 2021-02-25 12:24:46 -08:00
Makefile feat: working sd card automounting with via udev 2024-06-27 00:14:34 -07:00
README.md docs: first pass of stagex doc fixes 2024-06-27 00:35:06 -07:00

README.md

AirgapOS

https://git.distrust.co/public/airgap

About

A full-source-bootstrapped, deterministic, minimal, immutable, and offline, workstation linux distribution designed for creating and managing secrets offline.

Built for those of us that want to be -really- sure our most important secrets are managed in a clean environment with an "air gap" between us and the internet with high integrity on the supply chain of the firmware and OS used.

Uses

  • Generate PGP keychain
  • Store/Restore gpg keychain to security token such as a Yubikey or Nitrokey
  • Signing cryptocurrency transactions
  • Generate/backup BIP39 universal cryptocurrency wallet seed
  • Store/Restore BIP39 seed to a hardware wallet such as a Trezor or Ledger

Features

  • Determinsitic iso generation for multi-party code->binary verification
  • Small footprint (< 100MB)
  • Immutable and Diskless: runs from initramfs
  • Network support and most drivers removed to minimize exfiltration vectors

Requirements

Software

  • docker 26+

Hardware

  • x86_64 PC or laptop
    • linuxboot/heads firmware supported and recommended for multi-use machine
      • Allows for signed builds, and verification of signed sd card payloads
    • Ensure any Wifi/Disk/Bluetooth/Audio devices are disabled/removed
  • Blank flash drive
  • Blank SD card

Build

Build a new release

```
make release
```

Reproduce an existing release

```
make attest
```

Sign an existing release

```
make sign
```

Setup

Assumes target is running Pureboot or Coreboot/heads

  1. Boot to shell: Options -> Recovery Shell
  2. Mount SD card
    mount-usb
    mount -o remount,rw /media
    
  3. Insert chosen GPG Smartcard device
  4. Initialize smartcard
    gpg --card-status
    
  5. Sign target iso
    cd /media
    gpg --armor --detach-sign airgap.iso
    
  6. Unmount
    cd
    umount /media
    sync
    
  7. Reboot

Usage

  1. Insert remote attestation device
  2. Power on, and verify successful remote attestation
  3. Boot to airgap via: Options -> Boot Options -> USB Boot

Development

Build develop image

make

Boot image in qemu

make vm

Enter shell in build environment

make shell