Re: idea: MAC level compression & crypto

Zygo Blaxell (uixjjji1@umail.furryterror.org)
Tue, 31 Aug 1999 05:06:31 GMT

>On Aug 29, Ralf Baechle wrote:
>> On Sun, Aug 29, 1999 at 12:10:34AM +0300, Elmer Joandi wrote:
>> > I feel I am been missing possibility for rot13 transformation of all IP
>> > packets for longer.
>>
>> Note that ROT13 so many years after it's invention it no longer secure.
>> The recommendation these days is tripple ROT13 ;-)
>
>be carefull: tripple-ROT13 still might be considered a (nuclear?!) weapon
>in some (very) western countries ;-))
>we really have to stay with single-ROT13 for hooks...

Hmmm...now is that triple-encrypt, or encrypt-decrypt-encrypt?

ROT39(x) == ROT13(ROT-13(ROT13(x))) == ROT13(x)

How about ROT13 with double the number of key bits? That would be...

ROT169(x) == ROT(169%26)(x) == ROT13(x)

This encryption algorithm resists all attempts to strengthen it!
It must be Clipper-ROT13!

;-)

-- 
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