Tutorial

This week, we will look at the one time pad. In short, this is an encryption technique that cannot be broken. We saw in the tutorial about hard problems, that we often have to prove security relative to a hard problem we assume is not feasible to break; using a one time pad means we do not need to rely…

PKI: Public Key Infrastructure

We have previously seen how public key cryptography works and that it is widely used in modern day…

This week, we will see the ElGamal encryption scheme; we are considering public key cryptography, so we use public and secret keys to achieve this encryption scheme.

Here, we look at the solution to the exercise set in this week’s tutorial, which introduced group theory.

Having considered the questions raised in the homomorphic encryption tutorial, let’s share our answers.

In the previous article, we saw how MPC can be used in to solve problems in the real world when data must remain private. This week, we will look at another cryptographic technique at the forefront of research that allows us to solve real-world problems.