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decodeotp's Introduction

decodeotp

Extract TOTP/HOTP secret keys from Google Authenticator exports

Installation

  1. Install the dependencies: pip install -r requirements.txt
  2. Install the Protocol Buffers Compiler (protoc)
  3. Generate a Python file out of the .proto schema: protoc --python_out=. google_auth.proto

Usage

  1. Export your accounts from Google Authenticator
  2. Screenshot the QR code and decode it
  3. Pass the URL to the script: ./decodeotp.py "otpauth-migration://offline?data=..."

The output will be in form of otpauth:// URLs, one per line, like this:

otpauth://totp/ACME%20Inc.:John%20Smith?secret=ABCDEFGHIJKLMNOP&issuer=ACME%20Inc.&algorithm=SHA1&digits=6

License

MIT License

google_auth.proto is provided by the Aegis project. All other files contain original code.

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