QR Backup

The purpose of this project is to establish a more secure alternative to paper backups of sensitive texts (like passwords, crypto seeds etc.) while keeping the content of backups as interoperable as possible.

This code use RSA SHA256 asymmetric encryption to encrypt your text and then convert it a QR code which can later be printed and kept at a safe place.

Installation

Run the following commands step by step to install QR Backup on your device.

git clone https://github.com/imaayushpatel/qr-backup
cd qr-backup
pip3 install -r requirements.txt

Usage

Generating Keys

To generate your private and public keys, use -g or --generate-keys as give below.

python3 qr-backup.py -g

Encoding Text

To encode text into QR code, use -e or --encode as given below and enter your message between " " (double quotes). You can save the QR code in any image format like PNG, JPG and even GIF which you can print later. Here PNG is used.

python3 qr-backup.py -e "witch collapse practice feed shame open despair creek road again ice least" qr_code.png public_key.pem

Encoding Text from a File

To encode text from a file into QR code, use -ef or --encode-file as given below. You can encrypt any file text format like TXT, ASC etc. Here ASC is used.

python3 qr-backup.py -ef seed.asc qr_code.png public_key.pem

Scanning QR COde

To scan the printed QR code, use -s or --scan as given below. When it shows Scanning..... point your webcam towards the QR code.

python3 qr-backup.py -s private_key.pem

Decoding QR Code from Image

To decode your text from the QR code, use -d or --decode as given below.

python3 qr-backup.py -d qr_code.png private_key.pem

Options

Short	Long	Description
-h	--help	Opens the help page
-g	--generate-keys	Generate private and public keys
-e	--encode	Encode text into QR code
-ef	--encode-file	Encode text from a file into QR code
-s	--scan	Scan the QR code from printed format
-d	--decode	Decode QR code into text