// COMPLETE THREAD

Re: cypto + compression

2 expanded posts ยท every known parent and child

NODE a54bd5daRe: cypto + compression
In-Reply-To: <199305212303.AA21876@joes.GARAGE.COM>
> In fact there are not. You can test this out; use PGP to encrypt any
> file you please, and then use any compression software you like to
> compress it. You will get no significant compression.

I don't know if there will be any new redundancies or not, but PGP
compresses it's output so you would naturally get no further
compression.

Ben Byer <bbyer@bix.com>
NODE 9367e954Re: cypto + compression
Ben Byer wrote:
 
   I don't know if there will be any new redundancies or not, but PGP
   compresses it's output so you would naturally get no further
   compression.
 
Dhoh! I should have specified that PGP's built-in compression be
turned off. Even without precompressing, encryption destroys almost
all the redundancy that compression can take advantage of.
 
Eric Watt Forste                             arkuat@joes.garage.com
1800 Market St #243                          San Francisco CA 94102
      "Expectation foils perception."   -- Pamela C. Dean