Stream cipher

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Hi,

        Can anyone suggest a good stream cipher algorithm for hardware
implementation.


Re: Stream cipher
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I'd think AES would be a good choice.

-Dave

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David Ashley                http://www.xdr.com/dash
Embedded linux, device drivers, system architecture

Re: Stream cipher
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But AES is a block cipher, not a stream cipher. Yes, it can be used in a
stream mode, but something else might be better.
Questions to the OP:
What level of security do you need (ie how well resourced & patient is
your adversary)?
How much hardware resources can you devote to this function?
How fast must it run?

Re: Stream cipher
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AES is a stream cipher -- every character is just 128 bits. :)

-Dave

--
David Ashley                http://www.xdr.com/dash
Embedded linux, device drivers, system architecture

Re: Stream cipher

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I don't have any specific requirement yet...
Inorder to get an hold on stream cipher..i wanted to do an hardware
implementation.
so i wanted to know the most used sterm cipher algorithm in hardware..
please pass on ur comments on RC4 ,its applications and present use


Re: Stream cipher
I'm also interested in hardware stream ciphers, and have been looking
at papers related to:

http://en.wikipedia.org/wiki/ESTREAM

Good luck!
alan


Re: Stream cipher
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Look for 'Self  Shrinking Generator', compact and no known attacks yet

Wim



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