Invalid Curve Attack on ed25519 exploit used for Tide's H4x Challenge 1.5
- Install SageMath (https://doc.sagemath.org/html/en/installation/index.html)
- Launch Jupyter notebook from a SageMath shell (maybe this helps - https://ask.sagemath.org/question/31088/launch-jupyter-notebook-from-sage/)
- Open the ipynb file. Make sure the language selected is SageMath rather than Python.

- Run the notebook like you would a regular Python notebook.