[Cryptography] What is the difference between a code and a cipher?

[Dave Horsfall]

On Fri, 5 Sep 2014, Peter Gutmann wrote:

> At least it doesn't have a code for "Sentence of a Court Martial to be 
> put into execution" ("oh, misread that, it was actually 'Sail to the 
> Northward the first fair Wind'.  Terribly sorry old chap, we'll send 
> flowers to your widow").

Maybe it could be, umm, say QXB, for "There are rainbows upon a warrior" 
or something?

> Those Q-codes can (or at least were) at one time quite useful, not far 
> from here there's an informal air museum containing a handwritten note 
> dropped by Guy Menzies, the pilot of the first trans-Tasman Ocean flight 
> that asks "Where can I land?  Point to nearest town".  He ended up 
> mistaking a swamp for flat land and crashed, flipping his aircraft.  A 
> Q-code or two would have helped quite a bit there.

It's been a while since I got my ticket, but I have no doubt that there is 
a Q-code for "Please tell me the nearest landmark to me".

I think by now that the OP has learned the difference beween codes and 
ciphers...

-- Dave