BIB-VERSION:: CS-TR-v2.0
ID:: ncstrl.dartmouthcs//TR88-138
ENTRY:: January 20, 1995
ORGANIZATION:: Dartmouth College, Computer Science
TITLE:: An Application of a Fast Data Encryption Standard Implementation
TYPE:: Technical Report (paper)
REVISION:: 1
AUTHOR:: Bishop, Matt
NOTE:: The 'January' in DATE is an arbitrary placeholder.
DATE:: January 1988
RETRIEVAL:: For a paper copy, email <reports@cs.dartmouth.edu>
RETRIEVAL:: For a paper copy, write to
       Technical Report Librarian
       Department of Computer Science
       Dartmouth College
       6211 Sudikoff Laboratory
       Hanover, NH 03755-3510
       USA
RETRIEVAL:: PDF at http://www.cs.dartmouth.edu/reports/TR88-138.pdf
ABSTRACT::
	The Data Encryption Standard is used as the basis for the UNIX
password encryption scheme.  Some of the security of that scheme
depends on the speed of the implementation.  This paper presents a
mathematical formulation of a fast implementation of the DES in
software, discusses how the mathematics can be translated into code,
and then analyzes the UNIX password scheme to show how these results
can be used to implement it.  Experimental results are provided for
several computers to show that the given method speeds up the
computation of a password by roughly 20 times (depending on the
specific computer).
END:: ncstrl.dartmouthcs//TR88-138