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OS2VAL.DOC
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1993-07-06
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VALIDATE FOR OS/2
Version 0.5
From McAfee Associates
(408) 988-3832
NOTE: VALIDATE FOR OS/2 (OS2VAL.EXE) is an OS/2 V2.0-specific
version of VALIDATE for checking files. It should be
used to check any OS/2-based programs instead of the DOS-
based VALIDATE.COM program.
OS2VAL is a file-authentication program that may be used to
check other programs for signs of tampering. OS2VAL uses two
discreet methods to generate Cyclic Redundancy Checks (CRC's),
which are then displayed for the user to compare against the
known value for the program(s) validated. The known validation
data can be published by the author of the program or be
obtained from a trusted source. The dual CRC checking provides
a high degree of security.
To confirm that a program is in its original, untampered
state, run the OS2VAL program on it, record the validation data
produced, and compare it against the record in the online
database. If they match, than it is highly improbable that the
program has been modified.
To run OS2VAL, type:
OS2VAL {d:\path\filename.ext}
The OS2VAL program will then display the following information:
Size: (#/bytes)
Date: (file creation date)
File Authentication
Check Method 1: (a four digit CRC)
Check Method 2: (a four digit CRC)
NOTE: The VALIDATE.COM for DOS will return a different Check
Method 1 value for files than OS2VAL.EXE. Do not use
VALIDATE.COM to validate OS/2 files.
The OS2VAL program may be copied and distributed at no charge as
long as it is distributed whole and intact and unmodified in any
way, along with this file. Please report virus infections and
reports of program tampering to:
McAfee Associates (408) 988-3832 office
3350 Scott Blvd, Bldg. 14 (408) 970-9727 fax
Santa Clara, CA 95054-3107 (408) 988-4004 BBS (25 lines)
U.S.A. USR HST/v.32/v.42bis/MNP1-5
CompuServe GO MCAFEE
Internet support@mcafee.COM
The validation data for OS2VAL.EXE, Version 0.5 is:
Size: 37,168
Date: 01-20-92
File Authentication
Check Method 1: 1D1F
Check Method 2: 01CA