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| 2 libdes, Version 4.01 10-Jan-97 | |
| 3 | |
| 4 Copyright (c) 1997, Eric Young | |
| 5 All rights reserved. | |
| 6 | |
| 7 This program is free software; you can redistribute it and/or modify | |
| 8 it under the terms specified in COPYRIGHT. | |
| 9 | |
| 10 -- | |
| 11 The primary ftp site for this library is | |
| 12 ftp://ftp.psy.uq.oz.au/pub/Crypto/DES/libdes-x.xx.tar.gz | |
| 13 libdes is now also shipped with SSLeay. Primary ftp site of | |
| 14 ftp://ftp.psy.uq.oz.au/pub/Crypto/SSL/SSLeay-x.x.x.tar.gz | |
| 15 | |
| 16 The best way to build this library is to build it as part of SSLeay. | |
| 17 | |
| 18 This kit builds a DES encryption library and a DES encryption program. | |
| 19 It supports ecb, cbc, ofb, cfb, triple ecb, triple cbc, triple ofb, | |
| 20 triple cfb, desx, and MIT's pcbc encryption modes and also has a fast | |
| 21 implementation of crypt(3). | |
| 22 It contains support routines to read keys from a terminal, | |
| 23 generate a random key, generate a key from an arbitrary length string, | |
| 24 read/write encrypted data from/to a file descriptor. | |
| 25 | |
| 26 The implementation was written so as to conform with the manual entry | |
| 27 for the des_crypt(3) library routines from MIT's project Athena. | |
| 28 | |
| 29 destest should be run after compilation to test the des routines. | |
| 30 rpw should be run after compilation to test the read password routines. | |
| 31 The des program is a replacement for the sun des command. I believe it | |
| 32 conforms to the sun version. | |
| 33 | |
| 34 The Imakefile is setup for use in the kerberos distribution. | |
| 35 | |
| 36 These routines are best compiled with gcc or any other good | |
| 37 optimising compiler. | |
| 38 Just turn you optimiser up to the highest settings and run destest | |
| 39 after the build to make sure everything works. | |
| 40 | |
| 41 I believe these routines are close to the fastest and most portable DES | |
| 42 routines that use small lookup tables (4.5k) that are publicly available. | |
| 43 The fcrypt routine is faster than ufc's fcrypt (when compiling with | |
| 44 gcc2 -O2) on the sparc 2 (1410 vs 1270) but is not so good on other machines | |
| 45 (on a sun3/260 168 vs 336). It is a function of CPU on chip cache size. | |
| 46 [ 10-Jan-97 and a function of an incorrect speed testing program in | |
| 47 ufc which gave much better test figures that reality ]. | |
| 48 | |
| 49 It is worth noting that on sparc and Alpha CPUs, performance of the DES | |
| 50 library can vary by upto %10 due to the positioning of files after application | |
| 51 linkage. | |
| 52 | |
| 53 Eric Young (eay@cryptsoft.com) | |
| 54 | |
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Chromium Code Reviews
Issue 2072073002:
Delete bundled copy of OpenSSL and replace with README. (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/openssl@master