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Article #6735

Re: Symmetric cipher security of GnuPG 1.0.4

#6735
From: SCOTT19U.ZIP_GUY
Date: Sun, 01 Apr 2001 14:42
40 lines
2683 bytes
fw@deneb.enyo.de (Florian Weimer) wrote in <874rw8uby7.fsf@deneb.enyo.de>:

>jtnews <jtnews@optonline.net> writes:
>
>> Does anyone know if there any limit
>> on passphrase length in GnuPG 1.0.4?
>
>AFAIK, there isn't one.
>
>> Is there a limit on the effectiveness
>> of very long passphrases due to the 
>> implementation of the cipher algorithm?
>
>It doesn't make sense to have more entropy in the passphrase than the
>cipher algorithm can use with its key length (but too much entropy
>isn't harmful anyway).  Obviously, there's no generic way to translate
>an entropy constraint to passphrase length limit.
>

  Does anyone know if there will ever me a mode in GnuPG that
would allow for a simple fully bijective compression and encryption
for messages not using a public key. So that at least the blocks of
data can be a true "bijective compression encryption" meaning any
key would lead to a decrypted decompressed file such that when
recompressed and encrypted you get the same data. At least in
the nonpublic key mode. So that it would be harder to attack.

David A. Scott
-- 
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From: david_a_scott@emailv.com (SCOTT19U.ZIP_GUY)
Newsgroups: sci.crypt,gnu.misc.discuss
Subject: Re: Symmetric cipher security of GnuPG 1.0.4
Date: 1 Apr 2001 14:42:31 GMT
Organization: Retired US Government Real Time computer Xpert
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