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55 lines
2.2 KiB
55 lines
2.2 KiB
14 years ago
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libdes, Version 4.01 10-Jan-97
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Copyright (c) 1997, 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 specified in COPYRIGHT.
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--
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The primary ftp site for this library is
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ftp://ftp.psy.uq.oz.au/pub/Crypto/DES/libdes-x.xx.tar.gz
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libdes is now also shipped with SSLeay. Primary ftp site of
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ftp://ftp.psy.uq.oz.au/pub/Crypto/SSL/SSLeay-x.x.x.tar.gz
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The best way to build this library is to build it as part of SSLeay.
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This kit builds a DES encryption library and a DES encryption program.
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It supports ecb, cbc, ofb, cfb, triple ecb, triple cbc, triple ofb,
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triple cfb, desx, and MIT's pcbc encryption modes and also has a fast
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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 arbitrary 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). It is a function of CPU on chip cache size.
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[ 10-Jan-97 and a function of an incorrect speed testing program in
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ufc which gave much better test figures that reality ].
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It is worth noting that on sparc and Alpha CPUs, performance of the DES
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library can vary by upto %10 due to the positioning of files after application
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linkage.
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Eric Young (eay@cryptsoft.com)
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