Index: openssl/crypto/des/README |
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- |
- libdes, Version 4.01 10-Jan-97 |
- |
- Copyright (c) 1997, Eric Young |
- All rights reserved. |
- |
- This program is free software; you can redistribute it and/or modify |
- it under the terms specified in COPYRIGHT. |
- |
--- |
-The primary ftp site for this library is |
-ftp://ftp.psy.uq.oz.au/pub/Crypto/DES/libdes-x.xx.tar.gz |
-libdes is now also shipped with SSLeay. Primary ftp site of |
-ftp://ftp.psy.uq.oz.au/pub/Crypto/SSL/SSLeay-x.x.x.tar.gz |
- |
-The best way to build this library is to build it as part of SSLeay. |
- |
-This kit builds a DES encryption library and a DES encryption program. |
-It supports ecb, cbc, ofb, cfb, triple ecb, triple cbc, triple ofb, |
-triple cfb, desx, and MIT's pcbc encryption modes and also has a fast |
-implementation of crypt(3). |
-It contains support routines to read keys from a terminal, |
-generate a random key, generate a key from an arbitrary length string, |
-read/write encrypted data from/to a file descriptor. |
- |
-The implementation was written so as to conform with the manual entry |
-for the des_crypt(3) library routines from MIT's project Athena. |
- |
-destest should be run after compilation to test the des routines. |
-rpw should be run after compilation to test the read password routines. |
-The des program is a replacement for the sun des command. I believe it |
-conforms to the sun version. |
- |
-The Imakefile is setup for use in the kerberos distribution. |
- |
-These routines are best compiled with gcc or any other good |
-optimising compiler. |
-Just turn you optimiser up to the highest settings and run destest |
-after the build to make sure everything works. |
- |
-I believe these routines are close to the fastest and most portable DES |
-routines that use small lookup tables (4.5k) that are publicly available. |
-The fcrypt routine is faster than ufc's fcrypt (when compiling with |
-gcc2 -O2) on the sparc 2 (1410 vs 1270) but is not so good on other machines |
-(on a sun3/260 168 vs 336). It is a function of CPU on chip cache size. |
-[ 10-Jan-97 and a function of an incorrect speed testing program in |
- ufc which gave much better test figures that reality ]. |
- |
-It is worth noting that on sparc and Alpha CPUs, performance of the DES |
-library can vary by upto %10 due to the positioning of files after application |
-linkage. |
- |
-Eric Young (eay@cryptsoft.com) |
- |