The above equation is pretty easy to solve, it just means that x is any value that when you divide by 2, gives a remainder of 1. x is all odd numbers. The more formal answer is: That reads as … Continue reading

# Monthly Archives: September 2015

The equation above is a congruence. What it says is that x % 3 is 2. The equals sign with three bars means “is equivalent to”, so more literally what the equation says is “x is equivalent to 2, when … Continue reading

This post is a pre-requisite for the next thing I want to talk about so may not make a whole lot of sense or be all that interesting until shown in that context. Say you have a function like this: … Continue reading

The last post showed a super simple encryption algorithm that let an untrusted person perform calculations with encrypted data such that when they gave the results back to you, you could decrypt them and get the results of the calculation … Continue reading

Homomorphic encryption is a pretty interesting thing. It allows you to do calculations on encrypted data such that when you decrypt the results, it’s as if you did the calculations on the unencrypted data. This allows computation to happen without … Continue reading