-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Sat, 29 Apr 2000, Edward Goulet wrote: > Date: Sat, 29 Apr 2000 11:18:38 PDT > From: Edward Goulet <[EMAIL PROTECTED]> > To: [EMAIL PROTECTED] > Subject: Triple DES > > In regards to implementing triple DES, is it just simply a matter of > encrypting with DES three times, like: > AFAIK, Triple DES (3des) is implemented with an encrypt-decrypt-encrypt triple with three different keys. First DES encrypt with one key, then DES decrypt with a second key, then DES encrypt with a third. This is MUCH more secure than vanilla DES. > E(K1,E(K2,E(K3,x))) ??? > > Anyone have a particular recommended (or _not_ recommended) flavor or "mode > of operation": ??? > > 1. E(K1,E(K2,E(K3,x))) > 2. E(K1,D(K2,E(K3,x))) > 3. E(K1,D(K2,E(K1,x))) > 4. E(K1, Tran( E(K2, Tran( E(K3, Compress( x )))))) > 5. E(K1, Prngxor(K4, Tran( E(K2, Tran( Prngxor(K5, E(K3, Compress( x > )))))))) > > ________________________________________________________________________ > Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com > > - -- Primary Email (PGP): [EMAIL PROTECTED] Alternate Email (no PGP): [EMAIL PROTECTED] PGP Key: http://www.well.com/user/natedog/key.pgp http://www.well.com/user/natedog/ Voice: 602-791-7219 AIM: linuxfu -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.1 (GNU/Linux) Comment: pgpenvelope - http://www.uiuc.edu/ph/www/ftobin/resources.html iD8DBQE5C/uwUv7vZyB+cZkRAvOZAJ9IrQPh71Kwb1Q6YSItQjO67SnJqQCcCZrs tpoosgkt8THg2eS83+wHNJs= =lI/2 -----END PGP SIGNATURE-----
