Review New Level:Switch#2

[CeliktepeMurat]

• Added changes on top of the PR Implement new level: Switch #351
• Converted level to solidity 0.8.0
• Some fixes in the tests
• Added author entry

[xaler5]

Hey @staa99

We moved your PR to this one because of rebasing and update to newer solidity version.

I wanted to propose you the following:

We already have a level named Switch, so this would more like a Switch 2. I loved your level so I thought you might be interested in adding it a little twist to make it harder.

What if the switches were two instead of one ? The first one being the one you already created, while the second one might be a recent vulnerability OZ had in the ECDSA library. Notice that the vulnerability is present at a specific version so the level should change to:

• Use ECDSA OZ library instead of plain ecrecover
• Use the specific version of ECDSA with the vulnerability

You can read about the vulnerability here
GHSA-4h98-2769-gh6h

And here
OpenZeppelin/openzeppelin-contracts@d693d89

Wdyt ?