Writing on Dave Farber's Interesting People list, PGP's Jon Callas busts out this lovely analogy about the strength of 128-bit keys used in connection with his cipher.
Modern cryptographic systems are essentially unbreakable, particularly if an adversary is restricted to intercepts. We have argued for, designed, and built systems with 128 bits of security precisely because they are essentially unbreakable. It is very easy to underestimate the power of exponentials. 2^128 is a very big number. Burt Kaliski first came up with this characterization, and if he had a nickel for every time I tell it, he could buy a latte or three.
Imagine a computer that is the size of a grain of sand that can test keys against some encrypted data. Also imagine that it can test a key in the amount of time it takes light to cross it. Then consider a cluster of these computers, so many that if you covered the earth with them, they would cover the whole planet to the height of 1 meter. The cluster of computers would crack a 128-bit key on average in 1,000 years.
If you want to brute-force a key, it literally takes a planet-ful of computers. And of course, there are always 256-bit keys, if you worry about the possibility that government has a spare planet that they want to devote to key-cracking.
The whole post is good and goes on from there to talk about real and possible vulnerabilities in cryptosystems (for example, the government could break into your house and put a keylogger in your computer for a fraction of the cost of attempting to break the crypto).
The office I work in is full of things old people buy to make themselves feel young again. I can honestly say that our awesome new toy, The Swagtron T3 Hoverboard, makes me feel very, very old. I’ll explain why later. Swagtron T3 Pros There’s no way to overcharge the battery and that means no […]
One thing that’s consistent among amateur pool players is that they unknowingly stand up during their shots. Just as in golf, pool players need to keep their heads down and stay still after they shoot in order to hit straight. The DIGICUE helps keep shots consistent by letting you know every time you’ve had extra […]
A leaked memo from Apple CEO Tim Cook to his staff explaining why he met with Donald Trump — a guy who called Apple traitors for refusing to defeat their own security — explains the rationale: “tax reform.”
One of the best ways to progress a career in project management is through earning recognized certifications. These certifications carry significant clout and don’t require expensive tuition or student loans. This Ultimate Project Management Certification Bundle is a great example of an affordable way to get ahead. It includes training for 9 certifications including PMP, […]
There’s nothing quite like the rush of playing against a real human opponent. But from a developer standpoint, creating fun multiplayer experiences is incredibly complex. Fortunately, the Unity3D game engine has made all aspects of game creation, including multiplayer functionality, as accessible as ever.This Unity Course Bundle introduces all of the necessary elements of creating […]
The 2016 World Series game 7 will undoubtedly go down in history as one of the greatest baseball games of all time. With endless suspense, a nefariously-timed rain delay, and extra innings, it reminded over 40 million viewers why they love America’s pastime – and why all bets were truly off in 2016. Savor the […]