NODE a54bd5daRe: cypto + compression
bbyer@BIX.comSun, 23 May 93 21:11:53 PDT
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
Eric Watt Forste <arkuat@joes.garage.com>Sun, 23 May 93 22:58:48 PDT
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