Re: triple algorithms

On Feb 24, 9:36 pm, "Antony Clements" <antony.cleme...@xxxxxxxxxxx>
wrote:
someone mentioned having a 3-AES style algorithm and then Mr Foolery
mentioned that it should be 3 different algorithms. This begs the question
of wether each layer should have a different mode of operation, irrespective
of algorithm?

Most would call 3 algorithms over kill and there are proofs that show
some times
two algorithms used together are no stronger than the weaker of the
two.

I would think it better to use a bijective large block whitening of
the file
you wish to encrypt. Such as a bijective BWT type to file compression
then
encrypt. If you use more than one level of encyrption be sure that the
inner
layers are bijective so not to weaken the overall encryption
capability.
Of course most here would call it over kill but why put all your eggs
in
one basket. Yes be all means use 3 totally different methods.

David A. Scott
--
My Crypto code
http://bijective.dogma.net/crypto/scott19u.zip
http://www.jim.com/jamesd/Kong/scott19u.zip old version
My Compression code http://bijective.dogma.net/
**TO EMAIL ME drop the roman "five" **
Disclaimer:I am in no way responsible for any of the statements
made in the above text. For all I know I might be drugged.
As a famous person once said "any cryptograhic
system is only as strong as its weakest link"
.

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