1994-09-30 14:50:09 +00:00
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libdes, Version 3.00 93/10/07
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Copyright (c) 1993, Eric Young
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All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of either:
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1995-08-25 22:52:32 +00:00
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1994-09-30 14:50:09 +00:00
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a) the GNU General Public License as published by the Free
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Software Foundation; either version 1, or (at your option) any
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later version, or
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b) the "Artistic License" which comes with this Kit.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See either
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the GNU General Public License or the Artistic License for more details.
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You should have received a copy of the Artistic License with this
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Kit, in the file named "Artistic". If not, I'll be glad to provide one.
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You should also have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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---
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This kit builds a DES encryption library and a DES encryption program.
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It suports ecb, cbc, ofb, cfb, triple ecb, triple cbc and MIT's pcbc
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encryption modes and also has a fast implementation of crypt(3).
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It contains support routines to read keys from a terminal,
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generate a random key, generate a key from an arbitary length string,
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read/write encrypted data from/to a file descriptor.
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The implementation was written so as to conform with the manual entry
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for the des_crypt(3) library routines from MIT's project Athena.
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destest should be run after compilation to test the des routines.
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rpw should be run after compilation to test the read password routines.
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The des program is a replacement for the sun des command. I believe it
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conforms to the sun version.
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The Imakefile is setup for use in the kerberos distribution.
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These routines are best compiled with gcc or any other good
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optimising compiler.
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Just turn you optimiser up to the highest settings and run destest
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after the build to make sure everything works.
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I believe these routines are close to the fastest and most portable DES
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routines that use small lookup tables (4.5k) that are publicly available.
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The fcrypt routine is faster than ufc's fcrypt (when compiling with
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gcc2 -O2) on the sparc 2 (1410 vs 1270) but is not so good on other machines
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(on a sun3/260 168 vs 336).
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Eric Young (eay@psych.psy.uq.oz.au)
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