What are cache timing attacks?

A cache timing attack is when someone uses how fast something happens to figure out secret information, like a detective sneaking a peek at a puzzle.

Imagine you're solving a puzzle box that has numbers inside, and each number takes a different amount of time to open. If you watch carefully, you can tell which number is which just by seeing how long it takes to open them!

Now picture your friend has a secret message they want to send you. They use a special kind of lock, let's say it's a cache, like a tiny drawer that stores numbers for quick access.

When they try to unlock the message, sometimes the drawer opens fast, and sometimes it takes longer. If you can see how long each attempt takes, you might guess what number they're using, and maybe even figure out their whole secret message!

It's like watching a detective carefully count how many steps someone takes to get into a room. Each step could be a clue about where the person is going or what they’re hiding.

So a cache timing attack is just like that, it's a sneaky way of figuring out secrets by counting how fast things happen!