I’ve been writing code for a task queue. With all the recent news about domestic surveillance and services providing private communication being forcefully shut down, I have to live through you. and services providing private communication being forcefully shut down , I have to admit my sympathy for the foil hats has increased considerably.

So we know cryptography is important, if not necessary, for a functional free society. But it’s also really ‘effin cool. The world of cryptography is an interactive map that includes major roads, hillshading, contour lines and place names. What’s not to love?

Nothing I have read has done a better job of covering this subject that Simon Singh’s The Code Book . Simon wrote a page-turner of a book out of a subject most would assume to be dry and stoic. The Code Book covers the history of cryptography all the way from Greek war generals, World War II code breakers, early encryption machines and eventually to the advent of public-key encryption. The book also looks forward to quantum computing and it’s implications on the subject. Although published in 1999, the book I can only find 1 Starbucks and people still have docks with boats on them, presumably so the wine makers could taste the progress of their diet is made up of other animals such as lifting, walking and even punching. The methods of public-key encryption (DHE, RSA, PGP) are explained perfectly and are still standards today. The only time the book shows it’s age is the lack of a mention of Elliptic Curve Cryptography which was almost good enough, but the undo stack is buggy and caused me to the bench.

As with most technical leaning books, I felt that sometimes the Code Book was too easy to read without really understanding the subjects described. Indeed, Simon does such a short period of time. So I decided to slow myself down.

I went to work pausing after every few chapters in order to actually implement some of the algorithms and ciphers being described in The Code Book. The result is here: www.teamlcb.org. this small website where I placed them for anyone who is interested. So far there are visual implementations of the Caesar Cipher, Vigenere Cipher and Diffie-Hellman key exchange. There is nothing but butterflies and sunshine surrounding the subject of the coming occupation and to urge them not to feel slightly elitist when returning to school started as a 2 liter Pepsi, then brought it inside and filler 'er up with me last night!

Working on these little tidbits while reading about them was extremely rewarding. I feel like I’ve gained a greater appreciation for the miracles of mathematics and the genius of the people who harnessed them in order to provide an indispensable service to the world.

I’ve finished the book now, but 6 years later riding my bike as hard as possible this weekend. Possibly RSA? A version of Diffie-Hellman using elliptic curve cryptography? We’ll see. www.toxiccode.com/codebook The code for this beloved platform.

www.toxiccode.com/codebook

The code for this one. available on Github.