Article View: sci.crypt
Article #1231Re: triple des encryption
From: Paul Schlyter
Date: Fri, 02 Oct 1992 09:47
Date: Fri, 02 Oct 1992 09:47
18 lines
1175 bytes
1175 bytes
In article <19921.4262.5798@dosgate> "alan gahtan" <alan.gahtan@canrem.com> writes: >Could someone please explain what is meant by "triple DES" encryption. >Does it mean that the plaintext message is encrypted using the same >password 3 times or does it mean the DES is used with three different >passwords? It means neither of them. Only two DES keys are used, let's call them A and B. Triple DES encryption is performed like this: encrypt message with A, decrypt with B, encrypt again with A. If the two keys A and B are identical, then a triple DES encryption is equivalent to a single DES encryption using either of the keys. -- --- Paul Schlyter, Swedish Amateur Astronomer's Society (SAAF) Nybrogatan 75 A, 6 tr, S-114 40 Stockholm, Sweden InterNet: pausch@saaf.se
Technical Details
Message-ID:
<1992Oct02.094754.21791@saaf.se>Path:
arc1-ca.pugleaf.net!sparky!uunet!mcsun!sunic!nobeltech!admin.kth.se!saaf.se!pauschReferences:
<19921.4262.5798@dosgate>Show Full Headers
Complete Article Headers
Newsgroups: sci.crypt Path: arc1-ca.pugleaf.net!sparky!uunet!mcsun!sunic!nobeltech!admin.kth.se!saaf.se!pausch From: pausch@saaf.se (Paul Schlyter) Subject: Re: triple des encryption Message-ID: <1992Oct02.094754.21791@saaf.se> Organization: SAAF, Svensk Amat|rAstronomisk F|rening References: <19921.4262.5798@dosgate> Distribution: sci Date: Fri, 02 Oct 92 09:47:54 GMT Lines: 18