Debunking "ghost users": MI5's plan to backdoor all secure messaging platforms

When lawmakers and cops propose banning working cryptography (as they often do in the USA), or ban it outright (as they just did in Australia), they are long on talk about "responsible encryption" and the ability of sufficiently motivated technologists to "figure it out" and very short on how that might work -- but after many years, thanks to the UK's spy agency MI5, we have a detailed plan of what this system would look like, and it's called "ghost users." Read the rest

"Phooey": a pre-eminent cryptographer responds to Ray Ozzie's key escrow system

I have a lot of respect for ex-Microsoft Chief Software Architect Ray Ozzie, but when I saw that he'd taken to promoting a Clipper-Chip-style key escrow system, I was disheartened -- I'm a pretty keen observer of these proposals and have spent a lot of time having their problems explained to me by some of the world's leading cryptographers, and this one seemed like it had the same problems as all of those dead letters. Read the rest