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1980-01-01
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88 lines
Crypt Version 1.02
(c) Copyright 1985 Utilization Concepts Institute
Written by Dave Gardner
Disclaimer:
This program is being distributed under the Freeware
concept where users are urged to distribute this program in
original form, not modified in any way, to their friends and
other BBS. The author claims no responsibility for any
damage either accidental or otherwise through use of this
program. The program is provided "AS IS" without warranty of
any kind, either expressed or implied. The entire risk as to
the quality and compatibility of the program is with YOU.
Introduction:
Welcome to U.C.I. Crypt!! A file encryption/decryption
utility for the IBM PC/XT/AT/JR, COMPAQ, and all other
compatibles running under DOS 2.xx and higher. This program
was written in structured assembly language on an IBM XT.
Note: Don't rename CRYPT.EXE to anything else for security
reasons and because the program will ignore CRYPT.EXE when it
encrypts/decrypts files.
Instructions:
U.C.I. Crypt is a very useful, simple, and relatively
fast running utility that enables the user to secure ones
files from unauthorized viewing, execution, and possible
modifications. The program scrambles the selected file to
the point where it is completely unexecutable and unviewable.
To begin this process type at the DOS prompt A>Crypt and the
program should come up with a startup up screen and ask you
for a directory mask. The program defaults to *.* or you may
enter your own specifications. ALL DOS WILDCARD CHARACTERS
ARE ACCEPTABLE and subdirectories are also supported. Next
the the program will ask you if you want to encrypt or
decrypt files. SPECIAL NOTE: You may only encrypt a file
once to prevent other unauthorized users from trying to
encrypt a file without your knowledge. Next the program
prompts you to enter either an encryption or decryption
string. This string can be from 1 to 80 characters and must
be remembered in order to decrypt the file. WARNING!! YOU
MUST REMEMBER YOUR ENCRYPTION STRING!! Next you will be
prompted whether or not you want to manually select each
file. Now you are through with your work and now its up all
to the computer. Good Luck and don't forgot your encryption
string!
Reserved Filenames and Error Messages:
Certain filenames such as AUTOEXEC.BAT, COMMAND.COM,
CONFIG.SYS, CRYPT.EXE, and others have been specially flagged
so they won't be encrypted for user convenience. An
insufficient space available error message is displayed when
you attempt to encrypt a file that requires more space than
is currently available on your disk. Most other error
message are self-explanatory and currently do not need to be
explained.
Problems, Suggestions, and Donations
If you discover any bugs or severe problems in the above
program I would most appreciate that you notify me of the
problem. Also any suggestions you might have regarding this
program or any of the many other U.C.I. programs would be
much appreciated. If you enjoy this program please support
the author by sending 10 dollars to:
U.C.I. c/o Dave Gardner
P.O. Box 2155
Mesa, Az. 85204
Ph. (602)834-6340
Upon receipt of your support money you will be sent our
current catalog of other fine programs. Please help
distribute this program by copying it for your friends.
Futher Comments:
If the program Crypt is modify in any way it will cause
erasure of the program and send it to never never land.