Tags » Cryptography

How to Create a Private Ethereum Blockchain from Ground-up?

Ethereum is a decentralized platform that runs smart contracts, applications that run exactly as programmed without possibility of downtime, censorship, fraud or third party interference. In this blog post I will take you through all the steps required in setting up a fully functioning private ethereum blockchain, inside your local network — which includes: 55 more words


Everything You Wanted To Know About Blockchains but were too afraid to ask

Ah, blockchains.

Kind of a big deal. You’d have to be a total square not to have heard about them. Me? I’ve got eight.

Often over-complicated, over-mysticised, over-singularised (I don’t even know what the right word for it is, but people say The Blockchain a lot). 121 more words


Maths Behind Bitcoin

Bitcoin is a “worldwide cryptocurrency and digital payment system” that works without a central repository or single administrator. This system is peer-to-peer meaning that each computer can act as a server for the others, which allows for transactions to take place between users directly without an intermediary (or… 813 more words


Stop reading, start patching

This is an emergency post: normal* service will resume next week**.

So, over the past 48 hours or so, news of the KRACK vulnerability for Wifi has started spreading. 344 more words


The making of Serious Cryptography

Many want to write a book, but what most people don’t realize is the actual extent to which it takes to write said book. Grueling hours and exhaustive editing processes make the experience one I’ll likely not forget. 1,370 more words


WPA2 shown to be vulnerable to key reinstallation attacks

A key reinstallation attack vulnerability in the WPA2 wi-fi protocol has been made public today. Security researcher Mathy Vanhoef has identified what he dubs a “serious weakness” in the wireless protocol. 1,134 more words


Challenge 10: No Cheating

Here’s Challenge #10 for October 15, 2017.


Today’s cipher is a famous cryptographic method known for its economy, ingenuity, and difficulty in cracking. Its inventor created all sorts of cool things, including musical instruments, a timepiece especially useful at the North Pole, and the earliest ancestor of the Oculus Rift. 127 more words

Weekly Challenges