PGP Encrypt Twitter DMs with Keybase


This is a quick tutorial on how to encrypt your Twitter messages using PGP with the help of Keybase.io. I read an article yesterday which seemed to imply that Twitter was mangling PGP encrypted messages (albeit unintentionally). There is a minor bug in Twitter's web interface - but PGP seems to work perfectly in apps. […] Read More

The Usability of Anti-Apartheid Encryption


(An adaptation of my earlier blog post on the same topic1.) This is a case study focusing on the usability of encryption systems as used by political dissidents in Apartheid era South Africa. Background - South Africa Between 1948 and 1994, the nation of South Africa was ruled by an ethnically white minority. They set […] Read More

Spycatcher's Relevance in 2014


In 1987 MI5's former Assistant Director, Peter Wright, released his autobiography. Spycatcher: The Candid Autobiography of a Senior Intelligence Officer. It was immediately banned by the British Government. Although the Internet wasn't around to facilitate its distribution, it was trivial to obtain copies imported from Australia. As a boy, I remember seeing the publicity about […] Read More

The Hardest Problem In Encryption? Usability.


I have been reading a wonderful account of how The ANC in South Africa developed and used encryption to avoid persecution by the Apartheid regime. The article is a good 15,000 words and will take you some time to read. It is a fascinating account of how an ersatz encryption technology was developed by enthusiastic […] Read More

You Never Call, You Never Write...


As Shakespeare said... "[Blog posts are] a tale told by an idiot, full of sound and fury, signifying nothing." Today Ofcom published the responses it had for its consultation on plans for the BBC to encrypt its HD broadcasts. The blogosphere went nuts! DRM? Not on our watch.  Boing Boing mobilised its army of commentators, […] Read More