Private key stream cipher? If you have 258 spare bytes of RAM, take a look
at 'alleged RC4' on the web, a cryptographic RNG with huge period
(256!*256^2), fast and easy to sequence (no multiply required), pops out
single bytes ready to XOR with your data stream.

And yeah, it could keep the NSA out. But don't get them angry, you
wouldn't like them when they're angry.

On Fri, 9 Feb 2001, D Lloyd wrote:

> Date: Fri, 9 Feb 2001 14:19:48 +0000
> From: D Lloyd <dan.lloyd@GB.ABB.COM>
> Reply-To: pic microcontroller discussion list <PICLIST@MITVMA.MIT.EDU>
> To: PICLIST@MITVMA.MIT.EDU
> Subject: [PIC]: Best simple encryption method
>
> Hi,
>
> I am developing an embedded internet application for a University project
> and have pretty much defended the device against most forms of attack. What
> I do need to do, however, is encrypt the data transfers from/to the device
> with a small but secure algorithm....
>
> I've had a look at the TEA algorithm, which looks promising; can anyone
> suggest any suitable alternatives, however? I don't need to keep the NSA
> out, but I would like to keep the "occasional cracker" attempts at bay.
>
> Best Regards,
>
> Dan
>
> --
> http://www.piclist.com#nomail Going offline? Don't AutoReply us!
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>
>

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