[cryptography] Unbreakable crypto?
johnl at iecc.com
Sat Mar 21 17:18:36 EDT 2015
>Would a commonly available large binary file make a good one-time pad?
>Something like ubuntu-14.10-desktop-amd64.iso12 maybe..
Unlkely for two reasons. One is that the point of a one-time pad is
that only the sender and recipient are supposed to have a copy. The
other is that something like a Linux distribution has extremely
obvious regularities, so it wouldn't be hard for a cryptographer
to figure out what it was.
The way you make a one time pad is to take a source of actual (not
pseudo) randomness and record a lot of it in a form that is relatively
easy to distribute securely, like a DVD-ROM.
More information about the cryptography