I did actually miss that part. I figured he gave them an electronic copy when he shut down.
Minimally, he gave them an "illegible copy." in 4 point font.Assuming its the actual key, I'm sure the FBI or NSA can OCR that. Even if parts of it are screwed up, SSL private keys actually have a fair amount of structure in them(at least enough to recover from someone writer "FUCK A DUCK" over and over again over part of one [0]) and even if say half the bits of the key give are illegible totally, the rest give you more than enough to factor it.
Minimally, he gave them an "illegible copy." in 4 point font.Assuming its the actual key, I'm sure the FBI or NSA can OCR that. Even if parts of it are screwed up, SSL private keys actually have a fair amount of structure in them(at least enough to recover from someone writer "FUCK A DUCK" over and over again over part of one [0]) and even if say half the bits of the key give are illegible totally, the rest give you more than enough to factor it.
[0]http://crypto.2012.rump.cr.yp.to/87d4905b6d2fbc6ad2389debb73...