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Re: 3DES
>Quick question. There's a brief mention in Applied Cryptography that
>triple DES uses:
>
> Eabc(x) = Ea(Db(Ec(x)))
>
>as opposed to:
>
> Eabc(x) = Ea(Eb(Ec(x)))
>
>in order to preserve some symmetry properties. Can anyone give a
>better explanation?
I thought it goes like this:
Eab(x) = Ea(Db(Ea(x)))
Anyone?
G.C.G.
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| Geoffrey C. Grabow | "What we demand are rigidly defined |
| Oyster Bay, New York | areas of doubt and uncertainty!" |
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