You can check whether a password has appeared in a previous data breach at haveibeenpwned.com/passwords. The only issue is, of course, that you have to enter your password to find out if it’s been in a breach. I built a tool that uses homomorphic encryption to perform these lookups completely privately. Here’s why I built it, and an explanation of how it works. When “k-anonymity” isn’t enough HIBP uses a simple technique called “k-anonymity” to avoid sending the full hash of you...| Posts on blintz base
This is a from-scratch explanation of private information retrieval built using homomorphic encryption. I try to assume only a general math / computer science background. To simplify things, my explanations may not always match academic definitions. You can check out this paper or code for more. Say we want to fetch an article from Wikipedia, but somehow not reveal to the server which one we fetched.| Posts on blintz base
VSCode C/C++ IntelliSense / Go-To-Definition Issues| blintzbase.com
Why cryptography is not based on NP-complete problems| blintzbase.com