rugo / flagstore

Stores Flags

RSA Signature Verification Flask App

This is a simple Flask application that verifies RSA signed messages using a public key. It provides both a JSON API endpoint and an HTML form for submitting messages and signatures.

Installation

1. Clone the repository:

   git clone https://github.com/rugo/flagstore
   cd flagstore

2. Install the required Python libraries:

   pip install -r requirements.txt

Usage

1. Run the Flask app:

   python app.py

2. Open a web browser and navigate to http://127.0.0.1:5000/.

API Endpoint

You can verify signatures by sending a POST request to /verify with a form payload containing the message and signature fields.

Example using curl:

curl -X POST http://127.0.0.1:5000/verify -F "message=test message" -F "signature=<hex_encoded_signature>"