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Re: Whatever happend to compression?
>
>
> Matt Holdrege/Ascend/US writes:
> > A few thoughts.
> >
> > In general, compression is nice in that it randomizes the data first,
> > then encryption further scrambles the bits making it harder for
> > anyone to make sense of it. It's another roadblock to the bad guy.
>
> Any compression scheme you can reverse doesn't randomize the data in
> any meaningful sense. The reason to want compression is to reduce
> bandwidth, not for security.
>
> > Compression should happen before encryption since compression
> > works better on raw data than on encrypted data.
>
> Compression should not work at all on encrypted data since encrypted
> data should be essentially random to anyone without the key. That
> implies incompressable.
>
> Perry
>
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