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非常经典的加密算法

This package provides a network login service with more secure authentication
than telnet or rlogin.  Also, all data transmitted to and from the remote
host in encrypted using the DES.  Thus, this package allows you to use a 
remote host across untrusted networks without fear of network snooping.

The package creates two executables: a daemon which runs on the host you wish
to login to, and a client which runs on the host(s) you wish to login from.

To install, just follow the instructions in the Makefile.

To use, read the man pages for deslogin.1 and deslogind.1.  They provide 
many helpful hints and security tips.  The cipher program is included here
from my previous cipher distribution.

Dave Barrett
[e-mail]

Release 1.0 April 1994:
   The client (deslogin) has run on numerous machines for years.  
   The server (deslogind) is harder:

   deslogind tested on the following machines:
      HP-UX  B.09.00 B 9000/370		- fully functional
      OSF1   V2.0 240  alpha		- fully functional
      SunOS  4.1.1 1   sun4c		- fully functional
      ULTRIX 4.3 1     RISC  		- works, but /dev/tty inaccessable
      ULTRIX 4.2 0     RISC		- works, but /dev/tty inaccessable
					- ctrl-z aborts session.

DEC MIPS Ultrix Note:
   I think the problem may be related to POSIX/BSD implementation
   on the DEC MIPS machine.  The parent process had acquired
   the fd as a controlling terminal even though O_NOCTY was 
   specified.   The tcsetpgrp call returned success, but I'm not
   sure I believe it.  If anyone knows about controlling terminal
   stuff on the MIPS, please contact me.  I have comments in deslogind.c
   and tty.c on what I attempted.