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From: Greg Rose on 1 Mar 2010 10:21
In article <dfa7e779-0af1-400d-8cd1-ea975f4d72ff(a)e1g2000yqh.googlegroups.com>,
mark <cheesemonkey22(a)gmail.com> wrote:
>I understand that using the same key all the time is a bad thing,
>since if that key is discovered, it would be considered a total
>break. However, why should you *never* reuse a stream cipher's key?

All modern stream ciphers support some sort of
nonce or initialization vector input. With correct
use, the stream ciphers can be used with an
unchanged key, just like you need an IV for
correct use of most block cipher chaining modes.

Greg.
--
Greg Rose
232B EC8F 44C6 C853 D68F E107 E6BF CD2F 1081 A37C
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