[146761] in cryptography@c2.net mail archive
Re: [Cryptography] XORing plaintext with ciphertext
daemon@ATHENA.MIT.EDU (Florian Weimer)
Sat Sep 7 16:37:21 2013
X-Original-To: cryptography@metzdowd.com
From: Florian Weimer <fw@deneb.enyo.de>
To: Dave Horsfall <dave@horsfall.org>
Date: Sat, 07 Sep 2013 21:58:58 +0200
In-Reply-To: <alpine.BSF.2.00.1309071708380.68676@aneurin.horsfall.org> (Dave
Horsfall's message of "Sat, 7 Sep 2013 17:14:21 +1000 (EST)")
Cc: Cryptography List <cryptography@metzdowd.com>
Errors-To: cryptography-bounces+crypto.discuss=bloom-picayune.mit.edu@metzdowd.com
* Dave Horsfall:
> Take the plaintext and the ciphertext, and XOR them together. Does the
> result reveal anything about the key or the painttext?
Yes, their length.
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