QRKey

qrkey is a command-line tool for generating and recovering QR codes from files for offline private key backup. It allows you to convert files into QR codes that can be printed or stored, and later recovered from those QR codes. It supports large files by splitting them into multiple QR codes, and includes metadata for easy recovery and validation.

• Convert a file into a PDF with QR codes
• Recover from a PDF with QR codes with a barcode scanner
• Recover from a PDF with QR codes from a file with lines

Installation

macOS users can install qrkey using Homebrew Tap:

brew tap techwolf12/tap
brew install techwolf12/tap/qrkey

For Docker users, you can use the Docker image:

docker run -v "$(pwd)":/mnt ghcr.io/techwolf12/qrkey:latest generate --in /mnt/testfile.txt --out /mnt/test.pdf

For other systems, see the releases page.

Usage

To generate a QR code from a file, use the following command:

qrkey generate --in <file> --out file.pdf

To recover a file from QR codes, use the following command:

qrkey recover --in <file.txt>

Or to recover interactively:

qrkey recover

License

See LICENSE.