Article View: comp.sys.acorn.programmer
Article #21Re: Encryption for a program.
From: Peter Howkins
Date: Tue, 18 Aug 1998 00:00
Date: Tue, 18 Aug 1998 00:00
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1682 bytes
Chris rutter wrote >Rob Kendrick <rob@kiwisoftware.demon.com.uk> wrote: > > > PGP will do the trick. Accept nothing less. :) > > This sounds somewhat contrived; why would you want to use a > specific implementation of a cipher? There are are a variety > of acceptable block and stream ciphers that could be used > for this purpose (IDEA, Blowfish, Twofish, etc.), but all of Erm, PGP uses IDEA. Blowfish is partially susceptable to differential cryptanalysis (at reduced rounds). IDEA is probably the best bet, though TEA (tiny encryption algorithm) has been shown to resist differntial cryptanalysis quite well. > them are flawed by the simple problem that the `key' required > to unlock the software can be spread by mouth. The key is always the weakest link, why spend years brute forcing the answer on computers, when you can threaten the rabbits of the key owner and get it in 5 minutes :) Peter In a sadistic mood
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 104d22,c4b0490f36f941 X-Google-Attributes: gid104d22,public X-Google-Thread: 1046d6,c4b0490f36f941 X-Google-Attributes: gid1046d6,public From: Peter Howkins <p.j.howkins@lboro.ac.uk> Subject: Re: Encryption for a program. Date: 1998/08/18 Message-ID: <35D9A514.7C57B5E@lboro.ac.uk> X-Deja-AN: 382330709 Content-Transfer-Encoding: 7bit References: <na.ec74224873.a70260astoneha@argonet.co.uk> <4873736139%rob@kiwisoftware.demon.com.uk> <6r95a1$g3d$2@black.oaktree.co.uk> Content-Type: text/plain; charset=us-ascii Organization: Loughborough University Mime-Version: 1.0 Reply-To: p.j.howkins@lboro.ac.uk Newsgroups: comp.sys.acorn.programmer,argonet.acorn.misc