[Cisspstudy] Stream ciphers

[Clement Dupuis]

Good day,

You are totally correct, stream cipher do rely on XOR or binary addition of
bits.

This is one of the many errors that have been identified within the official
book.

I would use this book only as a checklist of topics that might show up on
the exam or as my secondary book.

Take care

Clement



On Sun, Sep 27, 2009 at 10:19, Andrea Gatta <andrea.gatta at gmail.com> wrote:

> Hi there,
> just to verify the content page 228 of the official ISC2 guide to CBK which
> stated: "
>
> stream-based cipher relies primarily on substitution
>
> "
>
> Honestly I thought stream cipher were mainly implemented using XOR
> operations.
>
> Andrea
>
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