Invalid-Curve-Attack-on-ed25519

Invalid Curve Attack on ed25519 exploit used for Tide's H4x Challenge 1.5

Steps to run:

1. Install SageMath (https://doc.sagemath.org/html/en/installation/index.html)
2. Launch Jupyter notebook from a SageMath shell (maybe this helps - https://ask.sagemath.org/question/31088/launch-jupyter-notebook-from-sage/)
3. Open the ipynb file. Make sure the language selected is SageMath rather than Python.
4. Run the notebook like you would a regular Python notebook.