Article View: sci.crypt
Article #1317PGP weak on long messages (was: Re: pgp2.0 ... key length?)
From: E. Tye McQueen
Date: Sun, 04 Oct 1992 08:49
Date: Sun, 04 Oct 1992 08:49
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1361 bytes
Well, this is probably too basic for sci.crypt and cross-posting to alt.security *and* alt.security.pgp doesn't make much sense to me so follow-ups have been directed to only alt.security.pgp. lewis@aera8700.mitre.org (Keith Lewis) writes: )PGP is essentially RSA performed on a bitmask which is used repeatedly on )a single message. Doesn't reusing the (encrypted) bit mask make long messages fairly easy to crack if you have ideas as to the content of the plain text? I guess the message would best be several times the length of the bit mask for this to work. Is it done this way to save computation time when en/decrypting? Or is this to get around silly NSA restrictions? Thanks, tye@spillman.com Tye McQueen, E. ---------------------------------------------------------- Nothing is obvious unless you are overlooking something. ----------------------------------------------------------
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Newsgroups: sci.crypt,alt.security,alt.security.pgp Path: arc1-ca.pugleaf.net!sparky!uunet!spillman!tye From: tye@spillman.uucp (E. Tye McQueen) Subject: PGP weak on long messages (was: Re: pgp2.0 ... key length?) Message-ID: <1992Oct04.084900.19815@spillman.uucp> Date: Sun, 04 Oct 1992 08:49:00 GMT Follow-Ups: alt.security.pgp References: <1992Sep25.191759.25545@nevada.edu> Organization: Spillman Data Systems Lines: 21