Link tags: cryptography

Enigma machine / Tom MacWright / Observable

See how an Enigma machine works …and interact with it.

Letters to be encrypted enter at the boundary, move through the wire matrix, and exit.

The Woman Who Smashed Codes - Jason Fagone - Hardcover

This book—released today—looks right up my alley.

After World War I, Smith used her talents to catch gangsters and smugglers during Prohibition, then accepted a covert mission to discover and expose Nazi spy rings that were spreading like wildfire across South America, advancing ever closer to the United States. As World War II raged, Elizebeth fought a highly classified battle of wits against Hitler’s Reich, cracking multiple versions of the Enigma machine used by German spies.

The Invention of Wireless Cryptography—The Appendix

A marvellous story of early twentieth century espionage over the airwaves.

In one proposal, hidden instructions were interspersed within regular, ordinary-looking messages by slightly lengthening the spaces between dots and dashes.

Enigma-E

An Enigma machine of one’s own.

The Moral Character of Cryptographic Work by Phillip Rogaway (PDF)

It’s a PDF and it’s an academic paper, but this rousing call to arms is a remarkably clear and engrossing read.

With few exceptions, the atomic scientists who worked on disarmament were not the same individuals as those who built the bomb. Their colleagues—fellow physicists—did that. Cryptographers didn’t turn the Internet into an instrument of total surveillance, but our colleagues—fellow computer scientists and engineers—did that.

It concludes with a series of design principles for the cryptographic community:

• Attend to problems’ social value. Do anti-surveillance research.
• Be introspective about why you are working on the problems you are.
• Apply practice-oriented provable security to anti-surveillance problems.
• Think twice, and then again, about accepting military funding.
• Regard ordinary people as those whose needs you ultimately aim to satisfy.
• Be open to diverse models. Regard all models as suspect and dialectical.
• Get a systems-level view. Attend to that which surrounds our field.
• Learn some privacy tools. Use them. Improve them.
• Stop with the cutesy pictures. Take adversaries seriously.
• Design and build a broadly useful cryptographic commons.
• Choose language well. Communication is integral to having an impact.

We need to erect a much expanded commons on the Internet. We need to realize popular services in a secure, distributed, and decentralized way, powered by free software and free/open hardware. We need to build systems beyond the reach of super-sized companies and spy agencies. Such services must be based on strong cryptography. Emphasizing that prerequisite, we need to expand our cryptographic commons.

Seeing Like a Network — The Message — Medium

How computers work:

One day, a man name Alan Turing found a magic lamp, and rubbed it. Out popped a genie, and Turing wished for infinite wishes. Then we killed him for being gay, but we still have the wishes.

Then we networked computers together:

The network is ultimately not doing a favor for those in power, even if they think they’ve mastered it for now. It increases their power a bit, it increases the power of individuals immeasurably. We just have to learn to live in the age of networks.

We are all nodes in many networks. This is a beautiful description of how one of those networks operates.

Alice and Bob in Cipherspace

A clear explanation of the current state of homomorphic encryption.

telegraphic and signal codes : scans, transcriptions

Before there were HTTP codes, there were telegraphic codes. The Victorian internet indeed!