Archives/extract_otp_secret_keys
2
0
Fork 0
mirror of https://github.com/scito/extract_otp_secret_keys synced 2024-10-31 15:20:27 +00:00
Code Issues Projects Releases Wiki Activity
7 Commits 12 Branches 48 Tags 35 MiB
Python 73.8%
Shell 23.5%
Dockerfile 2.5%
Nix 0.2%
6068eb142c
Go to file
scito 6068eb142c Fix #1: Quote otp.name
2020-11-14 13:15:06 +01:00
generated_python Initial 2020-05-23 08:51:41 +02:00
.editorconfig Initial 2020-05-23 08:51:41 +02:00
example_export.txt Initial 2020-05-23 08:51:41 +02:00
extract_otp_secret_keys.py Fix #1: Quote otp.name 2020-11-14 13:15:06 +01:00
google_auth.proto Initial 2020-05-23 08:51:41 +02:00
README.md use backtick for url protocol 2020-05-23 09:30:47 +02:00

README.md

Extract TOTP/HOTP secret keys from Google Authenticator

Extract two-factor authentication (2FA, TFA) secret keys from export QR codes of "Google Authenticator" app

Usage

  1. Export the QR codes from "Google Authenticator" app

  2. Read QR codes with QR code reader

  3. Save the captured QR codes in a text file. Save each QR code on a new line. (The captured QR codes look like otpauth-migration://offline?data=...)

  4. Call this script with the file as input:

     python extract_otp_secret_keys.py -q example_export.txt

Requirement

The protobuf package of Google for proto3 is required for running this script.

pip install protobuf

Optional

For printing QR codes, the qrcode module is required

pip install qrcode

Technical background

The export QR code of "Google Authenticator" contains the URL otpauth-migration://offline?data=.... The data parameter is a base64 encoded proto3 message (Google Protocol Buffers).

Command for regeneration of Python code from proto3 message definition file (only necessary in case of changes of the proto3 message definition):

protoc --python_out=generated_python google_auth.proto

References