double encryption

[Adrian 'Dagurashibanipal' von Bidder]

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On Tue, 2002-06-11 at 03:59, Volker Gaibler wrote:

> A DoubleDES cipher (encrypting two times with SingleDES and two
> different keys) has an effective key size of only 1 bit more than
> SingleDES. This is not really stronger than the single

Huh!?

I'm surprised. But then, I'm not an expert. Can you tell me why, or
point me to a reference?

cheers
-- vbi

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secure email with gpg            avbidder@fortytwo.ch: key id 0x92082481
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