What the CIA WikiLeaks Dump Tells Us: Encryption Works

Re:What the CIA WikiLeaks Dump Tells Us: Encryption Works by srssays on Saturday March 11, 2017 @09:48AM (#13845565)

That's not really the case. OTP requires a large amount of perfectly unbiased randomness, implicitly from a hardware randomness source (otherwise what you have is more accurately a stream cipher).

Contrast with deriving a key using cryptographic primitives, which can accept low-quality randomness (as long as there is sufficient entropy), that can be easily and transparently collected.

[ Parent | on HN ]

Re:What the CIA WikiLeaks Dump Tells Us: Encryption Works by klodolph on Saturday March 11, 2017 @01:35PM (#13846518)

Yes, in theory OTP requires perfectly uniform uncorrelated random input. However, in practice, you can use a randomness extractor… at which point, yes, we can't prove that someone with unbounded computational power wouldn't be able to crack it. But all known computational power is bounded.

[ Parent | on HN ]