Article View: sci.crypt
Article #6735Re: Symmetric cipher security of GnuPG 1.0.4
From: SCOTT19U.ZIP_GUY
Date: Sun, 01 Apr 2001 14:42
Date: Sun, 01 Apr 2001 14:42
40 lines
2683 bytes
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 -- SCOTT19U.ZIP NOW AVAILABLE WORLD WIDE "OLD VERSIOM" http://www.jim.com/jamesd/Kong/scott19u.zip Scott famous encryption website **now all allowed** http://members.nbci.com/ecil/index.htm Scott LATEST UPDATED sources for scott*u.zip http://radiusnet.net/crypto/archive/scott/ Scott famous Compression Page http://members.nbci.com/ecil/compress.htm **NOTE FOR EMAIL drop the roman "five" *** A final thought from President Bill: "The road to tyranny, we must never forget, begins with the destruction of the truth."
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: fb57f,b914f846d2a5b1a0 X-Google-Attributes: gidfb57f,public X-Google-Thread: 1025b4,b914f846d2a5b1a0 X-Google-Attributes: gid1025b4,public X-Google-ArrivalTime: 2001-04-01 07:56:10 PST Path: arc1-ca.pugleaf.net!supernews.google.com!sn-xit-02!supernews.com!nntp-relay.ihug.net!ihug.co.nz!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!sunqbc.risq.qc.ca!news.gate.net!not-for-mail 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 Lines: 40 Message-ID: <907654BB8H110W296LC45WIN3030R@207.36.190.226> References: <3AC5FC85.5FA906FC@optonline.net> <874rw8uby7.fsf@deneb.enyo.de> NNTP-Posting-Host: ppp-54.elpasonet.net X-Trace: news.gate.net 986136151 35212 216.84.6.83 (1 Apr 2001 14:42:31 GMT) X-Complaints-To: abuse@gate.net NNTP-Posting-Date: 1 Apr 2001 14:42:31 GMT User-Agent: Xnews/03.03.11