PCjs Machines
Home of the original IBM PC emulator for browsers.
PC-SIG Diskette Library (Disk #112)
[PCjs Machine "ibm5160"]
Waiting for machine "ibm5160" to load....
Information about “COMPUTER SECURITY”
This computer security package is a set of Shareware programs for
encrypting data files to prevent unauthorized access or for transmission
across phone lines. If you have a need to protect sensitive or private
communications, then this disk has a lot to offer you. Please read DOC
files for operating instructions. The security principle employed in
this program is coding with authorized persons having decoding
capabilities. The package also includes the ability to ascertain
whether files have been tampered with.
Special Requirments: None.
How to Start: Type GO (press enter).
Special Registration: $25.00
File Descriptions:
PC-CODE1 153 Program versions to use with BASRUN.EXE.
PC-CODE2 153 Program versions to use with BASRUN.EXE.
PC-MENU 153 Program versions to use with BASRUN.EXE.
PC-TAMP1 153 Program versions to use with BASRUN.EXE.
PC-TAMP2 153 Program versions to use with BASRUN.EXE.
PC-ZERO 153 Program versions to use with BASRUN.EXE.
NEW1 KEY Key file.
NEW2 KEY Key file.
SAMPLE KEY Key file.
AUTOEXEC BAT Auto execute file.
COPYRIGH T Copyright notes - disk not for export.
DIALOG?? DOC Sample dialogues for using programs (12 files).
FILES DOC Documentation.
I-8087 DOC Source of 8087 BASIC compiler versions.
PC-CODE1 EXE Encodes/decodes files.
PC-CODE2 EXE Encodes/decodes text files.
PC-CODE1 DOC Documentation for PC-CODE.
PC-CODE2 DOC Documentation for PC-CODE.
PC-HELP EXE Type "PC-HELP" for help.
PC-MENU EXE Execute other programs from this one.
PC-STAT2 LOG Sample files.
PC-TAMP1 DOC Documentation for PC-TAMP.
PC-TAMP1 EXE Checks if files have been altered or examined.
PC-TAMP2 EXE Checks if files have been altered or examined.
PC-ZERO DOC Documentation for PC-ZERO.
PC-ZERO EXE Writes "zeros" to file before deleting it.
READ ME Notes from the author.
SAMPLE MSG Sample message.
SAMPLE1 COD Sample file.
SAMPLE2 COD Sample file.
SAMPLE3 COD Sample file.
DIALOG11.DOC
A>
A> PC-CODE1
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
Do you have COLOR installed on your PC (YES or NO) N
Do You wish some Instructions/Help (Yes or No) N
Debuging statistics cause slower execution
Do You Wish Debuging Statistics (Y or N) Y
Do You Wish to Load KEYS from a FILE (Y or N) YES
Enter the fully qualified Input Key File Name: SAMPLE.KEY
*** Loaded 25 Keys from SAMPLE.KEY Successfully
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
Input and Output File may be the same file
Only Valid files; no use of 'CON:' or 'LPT1:'
Enter Output file name (Full name): SAMPLE1.COD
Enter Input FILE (full name): SAMPLE.MSG
Encode or Decode (E or D) E
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
* * * R U N N I N G * * *
Wish to Save newly Computed Keys to a File (Y or N) Y
Enter the fully qualified Output Key File Name: NEW1.KEY
*** Saved 25 Keys to NEW1.KEY Successfully
Wish to Save Log Statistics for Keys used (Y or N) YES
Enter Stat Log File Name or 'LPT1:' or default of blank
Enter Log File Name:
*** Saved Log file to PC-STAT1.LOG ***
..........................................................
A>
qualified Input Key File Name: SAMPLE.KEY
*** Loaded 25 Keys from SAMPLE.KEY Succes
DIALOG12.DOC
A>
A> PC-CODE1
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
Do you have COLOR installed on your PC (YES or NO) NO
Do You wish some Instructions/Help (Yes or No) NO
Debuging statistics cause slower execution
Do You Wish Debuging Statistics (Y or N) NO
Do You Wish to Load KEYS from a FILE (Y or N) YES
Enter the fully qualified Input Key File Name: SAMPLE.KEY
*** Loaded 25 Keys from SAMPLE.KEY Successfully
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
Input and Output File may be the same file
Only Valid files; no use of 'CON:' or 'LPT1:'
Enter Output file name (Full name): SAMPLE1.TXT
Enter Input FILE (full name): SAMPLE1.COD
Encode or Decode (E or D) Decode
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
* * * R U N N I N G * * *
Wish to Save newly Computed Keys to a File (Y or N) N
Wish to Save Log Statistics for Keys used (Y or N) NO
..........................................................
A>
Do You wish some Instructions/Help (Yes or
DIALOG13.DOC
A>
A> PC-CODE1
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
Do you have COLOR installed on your PC (YES or NO) NO
Do You wish some Instructions/Help (Yes or No) YES
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
To begin execution of PC-CODE1 or PC-CODE2, just type these names
in PC DOS or type PC-MENU. For example: "A> PC-MENU "
PC-CODE1 is intended to encode/decode files only. It does this
thru a process known as super-encipherment. This means that
each character of plain text (uncoded text) is both scrambled
(transposed) as well as substituted for some random "other"
character.
Keys may Optionally be Loaded or Saved to a FILE. The data format
of such a file is 25 KEY numbers (between 1 & 2,147,483,646)
each separated by A Carriage Return (on separate lines); And
finally a 26th line of required Comment/Remark Information.
An example of a key file is "SAMPLE.KEY". You can display
this file by typing one of the following in DOS.
=======================
Wish More Documentation (Yes or No) <CR>=Yes: NO
Debuging statistics cause slower execution
Do You Wish Debuging Statistics (Y or N) YES
Do You Wish to Load KEYS from a FILE (Y or N) NO
..........................................................
P C - C O D E 1 ......Binary SuperEncipherment......
P C - C O D E 1 ......Binary SuperEncipherment......
P C - C O D E 1 ......Binary SuperEncipherment......
P C - C O D E 1 ......Binary SuperEncipherment......
P C - C O D E 1 ......Binary SuperEncipherment......
P C - C O D E 1 ......Binary SuperEncipherment......
Enter the type of KEY desired
Numeric; Number Only key N
Alphabetic; alphanumeric A
Enter N or A N
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
There are two(2) levels of Security HIGH and LOW
Enter H for HIGH or L for LOW L
LOW Level of Security Selected
You must now enter SEVEN (7) KEY numbers as indicated:
[ 1 ] Enter a NUMBER between 1 and 9,999,999 1
[ 2 ] Enter a NUMBER between 1 and 9,999,999 20
[ 3 ] Enter a NUMBER between 1 and 9,999,999 300
[ 4 ] Enter a NUMBER between 1 and 9,999,999 4000
[ 5 ] Enter a NUMBER between 1 and 9,999,999 50000
[ 6 ] Enter a NUMBER between 1 and 9,999,999 600000
[ 7 ] Enter a NUMBER between 1 and 9,999,999 7000000
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
The following Numeric Keys/Seeds were generated:
( A ) : 1856031743
( B ) : 277405183 1210387455 1289288703 902806527
( C ) : 737405183 1139478015 1764375039 405706239
1399377919 426254079 236302335 277987839 656553471
45072895 1754579967 1294269439 336157695 671749119
--- To Print this screen depress 'Shift PrtSc' ---
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
Input and Output File may be the same file
Only Valid files; no use of 'CON:' or 'LPT1:'
Enter Output file name (Full name): SAMPLE1B.COD
Enter Input FILE (full name): SAMPLE.MSG
Encode or Decode (E or D) E
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
* * * R U N N I N G * * *
Wish to Save newly Computed Keys to a File (Y or N) NO
Wish to Save Log Statistics for Keys used (Y or N) NO
..........................................................
A>
0387455 1289288703 902806527
( C ) : 737405183 1139478015 1764375039 405706239
13993779
DIALOG14.DOC
A>
A> PC-CODE1
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
Do you have COLOR installed on your PC (YES or NO) no
Do You wish some Instructions/Help (Yes or No) no
Debuging statistics cause slower execution
Do You Wish Debuging Statistics (Y or N) y
Do You Wish to Load KEYS from a FILE (Y or N) N
..........................................................
P C - C O D E 1 ......Binary SuperEncipherment......
P C - C O D E 1 ......Binary SuperEncipherment......
P C - C O D E 1 ......Binary SuperEncipherment......
P C - C O D E 1 ......Binary SuperEncipherment......
P C - C O D E 1 ......Binary SuperEncipherment......
P C - C O D E 1 ......Binary SuperEncipherment......
Enter the type of KEY desired
Numeric; Number Only key N
Alphabetic; alphanumeric A
Enter N or A NUMERIC
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
There are two(2) levels of Security HIGH and LOW
Enter H for HIGH or L for LOW L
LOW Level of Security Selected
You must now enter SEVEN (7) KEY numbers as indicated:
[ 1 ] Enter a NUMBER between 1 and 9,999,999 1
[ 2 ] Enter a NUMBER between 1 and 9,999,999 20
[ 3 ] Enter a NUMBER between 1 and 9,999,999 300
[ 4 ] Enter a NUMBER between 1 and 9,999,999 4000
[ 5 ] Enter a NUMBER between 1 and 9,999,999 50000
[ 6 ] Enter a NUMBER between 1 and 9,999,999 600000
[ 7 ] Enter a NUMBER between 1 and 9,999,999 7000000
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
The following Numeric Keys/Seeds were generated:
( A ) : 1856031743
( B ) : 277405183 1210387455 1289288703 902806527
( C ) : 737405183 1139478015 1764375039 405706239
1399377919 426254079 236302335 277987839 656553471
45072895 1754579967 1294269439 336157695 671749119
--- To Print this screen depress 'Shift PrtSc' ---
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
Input and Output File may be the same file
Only Valid files; no use of 'CON:' or 'LPT1:'
Enter Output file name (Full name): SAMPLE1B.TXT
Enter Input FILE (full name): SAMPLE1B.COD
Encode or Decode (E or D) D
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
* * * R U N N I N G * * *
Wish to Save newly Computed Keys to a File (Y or N) NO
Wish to Save Log Statistics for Keys used (Y or N) YES
Enter Stat Log File Name or 'LPT1:' or default of blank
Enter Log File Name: STAT-1B.LST
*** Saved Log file to STAT-1B.LST ***
..........................................................
A>
426254079 236302335 277987839 65655
DIALOG15.DOC
A>
A> PC-CODE1
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
Do you have COLOR installed on your PC (YES or NO) YES
Do You wish some Instructions/Help (Yes or No) NO
Debuging statistics cause slower execution
Do You Wish Debuging Statistics (Y or N) NO
Do You Wish to Load KEYS from a FILE (Y or N) NO
..........................................................
P C - C O D E 1 ......Binary SuperEncipherment......
P C - C O D E 1 ......Binary SuperEncipherment......
P C - C O D E 1 ......Binary SuperEncipherment......
P C - C O D E 1 ......Binary SuperEncipherment......
P C - C O D E 1 ......Binary SuperEncipherment......
P C - C O D E 1 ......Binary SuperEncipherment......
Enter the type of KEY desired
Numeric; Number Only key N
Alphabetic; alphanumeric A
Enter N or A A
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
There are two(2) levels of Security HIGH and LOW
Enter H for HIGH or L for LOW LOW
LOW Level of Security Selected
You must now enter SEVEN (7) key Alphanumerics as indicated:
[ 1 ] Enter Password: $XIu+L?
[ 2 ] Enter Password: 8!v|:fe*
[ 3 ] Enter Password: %ZIU;^<sS
[ 4 ] Enter Password: vb0-4&).W
[ 5 ] Enter Password: @mq7/=wK3
[ 6 ] Enter Password: t,}Hy!pa2
[ 7 ] Enter Password: io$c"/E7\
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
The following Numeric Keys/Seeds were generated:
( A ) : 1361829887
( B ) : 477976063 673798911 1239671807 1847482879
( C ) : 1634803711 1445970943 361860863 1341486079
510427647 364812799 1522112511 1339310591 207653375
25049855 2065608447 1616221183 554356735 647902719
--- To Print this screen depress 'Shift PrtSc' ---
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
Input and Output File may be the same file
Only Valid files; no use of 'CON:' or 'LPT1:'
Enter Output file name (Full name): SAMPLE1C.COD
Enter Input FILE (full name): SAMPLE.MSG
Encode or Decode (E or D) Encode
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
* * * R U N N I N G * * *
Wish to Save newly Computed Keys to a File (Y or N) NO
Wish to Save Log Statistics for Keys used (Y or N) NO
..........................................................
A>
1239671807 1847482879
( C ) : 16348
DIALOG16.DOC
A>
A> PC-CODE1
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
Do you have COLOR installed on your PC (YES or NO) NO
Do You wish some Instructions/Help (Yes or No) NO
Debuging statistics cause slower execution
Do You Wish Debuging Statistics (Y or N) YES
Do You Wish to Load KEYS from a FILE (Y or N) NO
..........................................................
P C - C O D E 1 ......Binary SuperEncipherment......
P C - C O D E 1 ......Binary SuperEncipherment......
P C - C O D E 1 ......Binary SuperEncipherment......
P C - C O D E 1 ......Binary SuperEncipherment......
P C - C O D E 1 ......Binary SuperEncipherment......
P C - C O D E 1 ......Binary SuperEncipherment......
Enter the type of KEY desired
Numeric; Number Only key N
Alphabetic; alphanumeric A
Enter N or A A
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
There are two(2) levels of Security HIGH and LOW
Enter H for HIGH or L for LOW L
LOW Level of Security Selected
You must now enter SEVEN (7) key Alphanumerics as indicated:
[ 1 ] Enter Password: $XIu+L?
[ 2 ] Enter Password: 8!v|:fe*
[ 3 ] Enter Password: %ZIU;^<sS
[ 4 ] Enter Password: vb0-4&).W
[ 5 ] Enter Password: @mq7/=wK3
[ 6 ] Enter Password: t,}Hy!pa2
[ 7 ] Enter Password: io$c"/E7\
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
The following Numeric Keys/Seeds were generated:
( A ) : 1361829887
( B ) : 477976063 673798911 1239671807 1847482879
( C ) : 1634803711 1445970943 361860863 1341486079
510427647 364812799 1522112511 1339310591 207653375
25049855 2065608447 1616221183 554356735 647902719
--- To Print this screen depress 'Shift PrtSc' ---
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
Input and Output File may be the same file
Only Valid files; no use of 'CON:' or 'LPT1:'
Enter Output file name (Full name): SAMPLE1C.TXT
Enter Input FILE (full name): SAMPLE1C.COD
Encode or Decode (E or D) DECODE
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
* * * R U N N I N G * * *
Wish to Save newly Computed Keys to a File (Y or N) NO
Wish to Save Log Statistics for Keys used (Y or N) NO
..........................................................
A>
1239671807 1847482879
( C ) : 1634803
DIALOG17.DOC
A>
A> PC-CODE1
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
Do you have COLOR installed on your PC (YES or NO) NO
Do You wish some Instructions/Help (Yes or No) YES
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
To begin execution of PC-CODE1 or PC-CODE2, just type these names
in PC DOS or type PC-MENU. For example: "A> PC-MENU "
PC-CODE1 is intended to encode/decode files only. It does this
thru a process known as super-encipherment. This means that
each character of plain text (uncoded text) is both scrambled
(transposed) as well as substituted for some random "other"
character.
Keys may Optionally be Loaded or Saved to a FILE. The data format
of such a file is 25 KEY numbers (between 1 & 2,147,483,646)
each separated by A Carriage Return (on separate lines); And
finally a 26th line of required Comment/Remark Information.
An example of a key file is "SAMPLE.KEY". You can display
this file by typing one of the following in DOS.
=======================
Wish More Documentation (Yes or No) <CR>=YES:
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
A> TYPE SAMPLE.KEY
<OR>
A> COPY SAMPLE.KEY LPT1:
A key file may be generated in PC-DOS by the Following:
A> COPY CON: MYKEY.KEY
2028841238
156091745
1551901393
590357944
..........
.......... [a total of 25 numbers]
=======================
Wish More Documentation (Yes or No) <CR>=Yes:
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
..........
109941534
2110010604
* This is my remarks 01/31/84 7:56 PM PC-CODE1 V1.51
^Z {Ctrl-Z} {ENTER}
If a key file is not used the following discussion applies:
There are two levels of security "LOW" and "HIGH". If you
elect the LOW level you will only have to enter 7 key
(SEED) numbers or in the case of alphanumeric keys 7
passwords of 5 or more characters. Actually, the longer
the passwords - the better. An Ideal password length would
seven passwords of 8 characters each.
If you elect HIGH security be prepared to enter up to 25
numbers between 1 and 2,147,483,646; or a minimum of 180
=======================
Wish More Documentation (Yes or No) <CR>=yes:
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
characters of alphanumeric passwords. It is best, the first
time thru to elect LOW security for testing purposes.
Why so many characters are required in the HIGH ALPHA mode security
is due to the additional insecurity of letters/words/phrases
and that the Randomizing (hashing) routine requires 6 characters
to generate a uniformly random Number (used internally). If the
users' alphanumeric passwords were perfectfully random and
all 256 possible characters could be typed at a 47 key keybroad,
there would only be a need for 4 characters to generate this number.
The user must provide a series of keys (a minimum of 7) which
may either be numeric (i.e. characters "0123456789") or
alphanumeric which includes any character on your IBM PC
keybroad. This includes alphabetics, numerics, and special
symbols like "!@#$%^&*()=+?:.<>[]~{}" and so forth.
Each of these keys should be chosen at random, and each
should be different. For alphanumeric keys, the following
=======================
Wish More Documentation (Yes or No) <CR>=Yes: NO
Debuging statistics cause slower execution
Do You Wish Debuging Statistics (Y or N) YES
Do You Wish to Load KEYS from a FILE (Y or N) NO
..........................................................
P C - C O D E 1 ......Binary SuperEncipherment......
P C - C O D E 1 ......Binary SuperEncipherment......
P C - C O D E 1 ......Binary SuperEncipherment......
P C - C O D E 1 ......Binary SuperEncipherment......
P C - C O D E 1 ......Binary SuperEncipherment......
P C - C O D E 1 ......Binary SuperEncipherment......
Enter the type of KEY desired
Numeric; Number Only key N
Alphabetic; alphanumeric A
Enter N or A ALPHA
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
There are two(2) levels of Security HIGH and LOW
Enter H for HIGH or L for LOW HIGHEST
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
You must enter 3 long PASSWORDS of alphanumeric data
(A) Enter Password of at least (MIN) 6 Chars
123456
......
Password:abcdef
(B) Enter Password of at least (MIN) 42 Chars
1 2 3 4
123456789012345678901234567890123456789012
.........+.........+.........+.........+..
Password:abcdefghijklmnopqrstuvwxyz1234567890!@#$%^
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
(C) Enter Password of at least (MIN) 102 Chars
1 2 3 4 5 6
123456789012345678901234567890123456789012345678901234567890
.........+.........+.........+.........+.........+.........+
Password:ABCDEFGHIJKLMNOPQRSTUVWXYZ!@#$%^&*()_+=- 1234567890<>{}[]?/,
7 8 9 10
123456789012345678901234567890123456789012
.........+.........+.........+.........+..
Password:qwertyuiopasdfghjkl;'zxcvbnm,./:;QAZWSXEDC
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
The following Numeric Keys/Seeds were generated:
( A ) : 949485921
( B ) : 949485921 1955816904 3018992949 1991530409
( C ) : 646312257 1349469576 2109471957 2926319400
1319706316 1971947683
--- To Print this screen depress 'Shift PrtSc' ---
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
Input and Output File may be the same file
Only Valid files; no use of 'CON:' or 'LPT1:'
Enter Output file name (Full name): SAMPLE1E.COD
Enter Input FILE (full name): SAMPLE.MSG
Encode or Decode (E or D) ENCODE
..........................................................
P C C O M P U T E R S E C U R I T Y V1.51 PC-CODE1
* * * R U N N I N G * * *
Wish to Save newly Computed Keys to a File (Y or N) YES
Enter the fully qualified Output Key File Name: NEW17.KEY
*** Saved 25 Keys to NEW17.KEY Successfully
Wish to Save Log Statistics for Keys used (Y or N) YES
Enter Stat Log File Name or 'LPT1:' or default of blank
Enter Log File Name:
*** Saved Log file to PC-STAT1.LOG ***
..........................................................
A>
1319706316 1971947683
--- To Print this screen depress 'Shift Prt
DIALOG21.DOC
A>
A> PC-CODE2
.......................................................
P C C o m p u t e r S e c u r i t y V1.51 PC-CODE2
Do you have COLOR installed on your PC (Yes or No) NO
Do you wish some instructions/Help (Yes or No) NO
Debug Statistics will slow down program execution
Do You Wish Debuging Statistics (Y OR N) YES
Do You Wish to Load KEYS from a FILE (Y OR N) YES
Enter the Fully Qualified Input Key FILE name: SAMPLE.KEY
*** Loaded 25 Keys from SAMPLE.KEY Successfully
.......................................................
P C C o m p u t e r S e c u r i t y V1.51 PC-CODE2
Possible Output files:
'A:FILE.EXT' 'B:FILE.EXT' 'LPT1:' 'CON:' 'CAS1:'
for FILES the input and Output must be different
Enter Output file name (Full name): SAMPLE2.COD
Possible Input files:
'A:FILE.EXT' 'B:FILE.EXT' 'C:FILE.EXT' 'CON:' 'CAS1:'
Enter Input FILE (full name): SAMPLE.MSG
Encode or Decode (E or D) ENCODE
.......................................................
P C C o m p u t e r S e c u r i t y V1.51 PC-CODE2
* * * R U N N I N G * * *
Wish to Save newly Computed KEYS to a FILE (Y OR N) YES
Enter the Fully Qualified Output Key File Name: NEW2.KEY
*** Saved 25 Keys to NEW2.KEY Successfully
Wish to Save Log Statistics for keys used (Y OR N) YES
Enter Stat Log File Name or 'LPT1:' or default of blank
Enter Log File Name:
*** Saved Stat Log file to PC-STAT2.LOG ***
.......................................................
A>
.....................
P C C o m p u t e r S e c u r i t y V1.
DIALOG22.DOC
A>
A> PC-CODE2
.......................................................
P C C o m p u t e r S e c u r i t y V1.51 PC-CODE2
Do you have COLOR installed on your PC (Yes or No) NO
Do you wish some instructions/Help (Yes or No) NO
Debug Statistics will slow down program execution
Do You Wish Debuging Statistics (Y OR N) YES
Do You Wish to Load KEYS from a FILE (Y OR N) YES
Enter the Fully Qualified Input Key FILE name: SAMPLE.KEY
*** Loaded 25 Keys from SAMPLE.KEY Successfully
.......................................................
P C C o m p u t e r S e c u r i t y V1.51 PC-CODE2
Possible Output files:
'A:FILE.EXT' 'B:FILE.EXT' 'LPT1:' 'CON:' 'CAS1:'
for FILES the input and Output must be different
Enter Output file name (Full name): CON:
Possible Input files:
'A:FILE.EXT' 'B:FILE.EXT' 'C:FILE.EXT' 'CON:' 'CAS1:'
Enter Input FILE (full name): SAMPLE2.COD
Encode or Decode (E or D) DECODE
.......................................................
P C C o m p u t e r S e c u r i t y V1.51 PC-CODE2
* * * R U N N I N G * * *
File Header: V1.51 PC-CODE2 ENCODED 02-01-1984 12:55:31
ABC DEF GHI JKL MNO PQR STU VWX YZ0 123 456 789
abc def fhi jkl mno pqr stu vwx uz0 123 456 789
Shift number symbols: !@# $%^ &*( )_+
Dollars: $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
Percent: %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
AT Symbol: @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Number/Pound: ################################
Periods: ................................
Commas: ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Mixed Brackets: () [] {} <> () [] {} <>
Quotes: """"""""""""""""""""""""""""""""
Apost: ''''''''''''''''''''''''''''''''
Askerichs: ********************************
Question mark: ????????????????????????????????
Divide ////////////////////////////////
Colons: ::::::::::::::::::::::::::::::::
Semi-colons: ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
Up arrow ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Plus: ++++++++++++++++++++++++++++++++
Equal: ================================
And symbol: &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
dash/subtract: --------------------------------
Alphabet: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
cccccccccccccccccccccccccccccccc
dddddddddddddddddddddddddddddddd
eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
*** END OF TEST ***
Wish to Save newly Computed KEYS to a FILE (Y OR N) NO
Wish to Save Log Statistics for keys used (Y OR N) NO
.......................................................
A>
;;;;;;;;;;;
Up arrow ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Plus: +++++++++++++++++++++
DIALOG23.DOC
A>
A> PC-CODE2
.......................................................
P C C o m p u t e r S e c u r i t y V1.51 PC-CODE2
Do you have COLOR installed on your PC (Yes or No) N
Do you wish some instructions/Help (Yes or No) N
Debug Statistics will slow down program execution
Do You Wish Debuging Statistics (Y OR N) N
Do You Wish to Load KEYS from a FILE (Y OR N) NO
.......................................................
P C - C O D E 2 ......Textual SuperEncipherment......
P C - C O D E 2 ......Textual SuperEncipherment......
P C - C O D E 2 ......Textual SuperEncipherment......
P C - C O D E 2 ......Textual SuperEncipherment......
P C - C O D E 2 ......Textual SuperEncipherment......
P C - C O D E 2 ......Textual SuperEncipherment......
Enter the type of KEY desired
Numeric; Number Only key N
Alphabetic; alphanumeric A
Enter N or A NUMERIC
.......................................................
P C C o m p u t e r S e c u r i t y V1.51 PC-CODE2
There are two(2) levels of Security HIGH and LOW
Enter H for HIGH or L for LOW LOW
LOW Level of Security Selected
You must now enter SEVEN (7) KEY numbers as indicated:
[ 1 ] Enter a NUMBER between 1 and 9,999,999 1
[ 2 ] Enter a NUMBER between 1 and 9,999,999 2
[ 3 ] Enter a NUMBER between 1 and 9,999,999 3
[ 4 ] Enter a NUMBER between 1 and 9,999,999 4
[ 5 ] Enter a NUMBER between 1 and 9,999,999 5
[ 6 ] Enter a NUMBER between 1 and 9,999,999 6
[ 7 ] Enter a NUMBER between 1 and 9,999,999 7
.......................................................
P C C o m p u t e r S e c u r i t y V1.51 PC-CODE2
The following Numeric Keys/Seeds were generated:
( A ) : 1856031743
( B ) : 1644781567 1238553087 823159295 1538023423
( C ) : 737405183 1139478015 1764375039 1590126335
1258193919 426254079 236302335 277987839 1214470655
45072895 1497160191 1294269439 1677861887 466270719
--- To Print this screen depress 'Shift PrtSc' ---
.......................................................
P C C o m p u t e r S e c u r i t y V1.51 PC-CODE2
Possible Output files:
'A:FILE.EXT' 'B:FILE.EXT' 'LPT1:' 'CON:' 'CAS1:'
for FILES the input and Output must be different
Enter Output file name (Full name): CON:
Possible Input files:
'A:FILE.EXT' 'B:FILE.EXT' 'C:FILE.EXT' 'CON:' 'CAS1:'
Enter Input FILE (full name): CON:
Encode or Decode (E or D) ENCODE
.......................................................
P C C o m p u t e r S e c u r i t y V1.51 PC-CODE2
* * * R U N N I N G * * *
--> Terminate Console Input with use '//END'
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
,KWEF'Mjjoc)[$'hJ:8N g$1d_vaEK,>|<v<#XtDQ!b(<V(fZG%;h(0pn{A)#Jh^,,
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
doaOEU[@-=ZPB-C!5`vCwr,[_DEg.0Fi}'h9E*ffnsT-7:MezC^`kw#ys]3NXV64rc
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
T~B2%$nK#|BitGu2Xq4KCc/Z!K"S^MjQ?+p2D1%"n `~LM+8.O$FAh:Tqvd<~Z|oK
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
Mh&HaI[~} }w0pXGnRiz`G~MO2g88.8H4Q|'e;~oddlr#Q4bT"90~Fz$6#',sV.`pZ
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
;FK,I0L]?GGLxw|mgv?GfvhSz~4{G}\"s"4R^TKG,Lu*Kl[9i_hKt|Ly?i]o;},'a6
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
a8,B+Q6:aRn7XlNQ55ZOr-P50l#-=*0-Dd&T0{PYWLT'*,iKI"9mPypJ!]/5HB1&K]
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
NgXTG_<S'ReG[RyB1fmSq(^Jy5J`@Y51e}6|c*'0r%q?ICWi|zHr#NV}bjEz&\rf;,
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
f0YU(f zN/=P"tcyvON:@Ko#M+(=\_hQO %f/4zoYP)au"so^y+a]xJn'M;voQm80,
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
ScmH>B-e06BnB20#{bB_C)v'j/91+'?7x9s
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
:AEToD(V;R<8i.S72Y .>0Qyp',+@n5GlpL
abcdefghijklmnopqrstuvwxyz 1234567890 !@#$%^&*()_+-={}[]<>,.?/"'~
ly%[m*BM3Ir<|ubQ3J<vKNc1KFO$5+;<BZo\kOU?C-X;0zp8MV5f\J`}/#(?#9iOX
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
lE;Gp`mtQle~bV7~iY6JA<'n<z*)HDf#'(3
//end
Wish to Save newly Computed KEYS to a FILE (Y OR N) NO
Wish to Save Log Statistics for keys used (Y OR N) NO
.......................................................
A>
GfvhSz~4{G}\"s"4R^TKG,Lu*Kl[9i_hKt|Ly?i]o;},'a6
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
DIALOG24.DOC
A>
A> PC-CODE2
.......................................................
P C C o m p u t e r S e c u r i t y V1.51 PC-CODE2
Do you have COLOR installed on your PC (Yes or No) NO
Do you wish some instructions/Help (Yes or No) NO
Debug Statistics will slow down program execution
Do You Wish Debuging Statistics (Y OR N) NO
Do You Wish to Load KEYS from a FILE (Y OR N) YES
Enter the Fully Qualified Input Key FILE name: SAMPLE.KEY
*** Loaded 25 Keys from SAMPLE.KEY Successfully
.......................................................
P C C o m p u t e r S e c u r i t y V1.51 PC-CODE2
Possible Output files:
'A:FILE.EXT' 'B:FILE.EXT' 'LPT1:' 'CON:' 'CAS1:'
for FILES the input and Output must be different
Enter Output file name (Full name): LPT1:
Possible Input files:
'A:FILE.EXT' 'B:FILE.EXT' 'C:FILE.EXT' 'CON:' 'CAS1:'
Enter Input FILE (full name): SAMPLE2.COD
Encode or Decode (E or D) DECODE
.......................................................
P C C o m p u t e r S e c u r i t y V1.51 PC-CODE2
* * * R U N N I N G * * *
File Header: V1.51 PC-CODE2 ENCODED 02-01-1984 12:55:31
Wish to Save newly Computed KEYS to a FILE (Y OR N) NO
Wish to Save Log Statistics for keys used (Y OR N) NO
.......................................................
A>
DIALOG25.DOC
A>
A> PC-CODE2
.......................................................
P C C o m p u t e r S e c u r i t y V1.51 PC-CODE2
Do you have COLOR installed on your PC (Yes or No) NO
Do you wish some instructions/Help (Yes or No) NO
Debug Statistics will slow down program execution
Do You Wish Debuging Statistics (Y OR N) NO
Do You Wish to Load KEYS from a FILE (Y OR N) NO
.......................................................
P C - C O D E 2 ......Textual SuperEncipherment......
P C - C O D E 2 ......Textual SuperEncipherment......
P C - C O D E 2 ......Textual SuperEncipherment......
P C - C O D E 2 ......Textual SuperEncipherment......
P C - C O D E 2 ......Textual SuperEncipherment......
P C - C O D E 2 ......Textual SuperEncipherment......
Enter the type of KEY desired
Numeric; Number Only key N
Alphabetic; alphanumeric A
Enter N or A NUMERICS
.......................................................
P C C o m p u t e r S e c u r i t y V1.51 PC-CODE2
There are two(2) levels of Security HIGH and LOW
Enter H for HIGH or L for LOW HIGH
You have Selected HIGH security
You must enter 25 key numbers between 1 and 2,147,483,64
A(1) ? 1
B( 1 ) 2
B( 2 ) 3
B( 3 ) 4
B( 4 ) 5
B( 5 ) 6
B( 6 ) 7
B( 7 ) 8
.......................................................
C( 1 ) 10
C( 2 ) 11
C( 3 ) 12
C( 4 ) 13
C( 5 ) 14
C( 6 ) 15
C( 7 ) 16
C( 8 ) 17
C( 9 ) 18
C( 10 ) 19
C( 11 ) 20
C( 12 ) 21
C( 13 ) 22
C( 14 ) 23
C( 15 ) 24
C( 16 ) 25
C( 17 ) 26
.......................................................
P C C o m p u t e r S e c u r i t y V1.51 PC-CODE2
Possible Output files:
'A:FILE.EXT' 'B:FILE.EXT' 'LPT1:' 'CON:' 'CAS1:'
for FILES the input and Output must be different
Enter Output file name (Full name): CON:
Possible Input files:
'A:FILE.EXT' 'B:FILE.EXT' 'C:FILE.EXT' 'CON:' 'CAS1:'
Enter Input FILE (full name): SAMPLE.MSG
Encode or Decode (E or D) ENCODE
.......................................................
P C C o m p u t e r S e c u r i t y V1.51 PC-CODE2
* * * R U N N I N G * * *
"wlVCA~Pq4d_Rg@)9\%y'LN3,e?qB;b{0Gc}m*3((Z\1_]Z>
Nxb_d$N`ZK\od]!3#HAs^"r$B1g, =1P<nWk<,0Y]h/fr"TU
+x!aM6+<$~si6RLOiI^=MC$?zeEXN$_lRVRlJ_
mKOM-NAEG&cMzz4tp\}~%su1!.4Y!.aH85qIi#dV5=M^&F)j~
o8JAX%W@X0r0\,8E1Q'LLXnvSO0+T>D[BiH{aFj~<HUFG4dB5
CDeJX#g{8X!V/r=L_:!%d@NW'B\88y4Sxv/*SnaVD]VnS!C?O
&aiLop#NTli.xekW,gi9!;I}?4S~;[-0sw\VkYcJBh?:uwm2b
n|z1i2Rl}2^e2JJ.hnLCnPO) VW|&:z|n'p5 x~?J>~dkbC!l
4nv<rL<A^gH*ndcS</z|\yL[PT-}|c0':`?&b`:(BCC+Vh^FY
S#NZk36a.fN-g]Q1S4f}}`0I `+fm])>WPjKi$ ;Q0/r9hk
4him&"_GdfwC;yXY]i@txyyRV `SP78k,wk&:-<<dqYTCsPm0
Jqw'0oxqxAk\Irm-lyTd<AYM+AUs2l}j0Huer)[1S9~wMf8'M
dHkWi1zM:naQYms43k?,.?;5hN[Zhs~ 4m9iq~Qx4&e^n=F?w
M{4US0@)?y)r&|o@4aEs56/?R=)CA..b|T.60Q@6h[8A-mWNN
j!%/<JdT,Y:(;X6wd1U/V>UWLAlH.N0dw8D:Bi`9}8Dn6yww_
fz-YA9HU|Z4^\bk'_MbEKhuL;M;#Z_9leK=},n\RZopkI-#k:
t>oB+K:y&NW:68j(1=."j6!05AVA_\RkPrq8c: P=+E#}4iU+
+8l~yt'4Z^dABC,Es-.?8F+((f6Supu8H+S&~zkp8kLP_H&!)
rf~h/9pdJ?.&}U#KA,]a{=-G,&PjwFD)D#4irfxL#JLE][S5s
[oK[YM/0~Ij"\Il9iVRw=i6~35#P}:0Kyk<ejeqK<p1.vU#kY
]Xh4xx#tdO7;?Bw[;eNJ<ryUwn/2hbnu6$Y_;*UCLwQLdu&A
&!UZW#~^5{g\\)2ie25YSC@k&T#:Py=$2YE629]c,,hq!vpI\
$f3m8e0L$t(Z%!wKn9mON'zmwI*U}86i@g1p)g3v+((2h(j~9
GLbj5#G!J>Ow{lNbpIej6{YD{*Edn'Gf-ZUe=9 M,V@uihXXf
|xRF1ST=%ybs}P<56cd 3e2jxxJA14Y69f*OT^_N|gP~kp0}%
3aT5{m\R{haE(D;x:#u#f8I `EqL;~"GHd^r-T$8/qFs-G\H%
QVgsQrP5d(g-h#hcQQ"!r93'>Q&Og$WVpd*oT^j'BlK,Q\RW:
{j+ 7z-jE{<qvrq~B^EA.p@PDSk]eMM?cNE8Ya a"z}U,1
hg8J>f/*l}R[^WySXMDilhk2O3e,<}5O%~tQ+wd8TInP#F*^o
#<kC`V"BFFJcV}Mp'Ca8eFTI]h9AH^93`CENXMBYm2Fq 38Nh
$VD{JER9RLOTu#YJV'?Z?mU|B!5rG7d^0OKFF\`'hrVF<xZ{*
d\k1g<z;ShRvWv2z[o6_r]eI12].o/_Xe=QU{Ed%,$"@~U3PA
iN3U=1qAjbs'eiSYPG]"SGfr/_wVH)Qkh!#Y<~`PJh
Wish to Save newly Computed KEYS to a FILE (Y OR N) N
Wish to Save Log Statistics for keys used (Y OR N) N
.......................................................
A>
?8F+((f6S
FILES.DOC
Directory of A:\PC-CODE Version 1.53 date: 14-JUN-84
PC-MENU EXE 19712 Executable Main MENU for PC-CODE (Start/Begin here)
PC-HELP EXE 19328 Executable User Help Program/list <.DOC> files
PC-CODE1 EXE 38016 Executable Program PC-CODE1; For File Encipherment
PC-CODE2 EXE 38528 Executable Program PC-CODE2; For Text/printable data
PC-ZERO EXE 19584 Executable Program to Zero and Erase files securely
PC-TAMP1 EXE 21632 Executable program to test Tampering of programs
PC-TAMP2 EXE 20864 Executable file to Verify PC-TAMP1 Tampering
READ ME 768 Messages about authorship and Public Domain Comments
COPYRIGH T 512 Messages about Copyright of PC-CODE source
AUTOEXEC BAT 640 A batch file that will start with the Main Menu
PC-CODE1 DOC 8846 Documentation & Comments concerning PC-CODE1
PC-CODE2 DOC 6331 Documentation & Comments concerning PC-CODE2
DIALOG11 DOC 1536 Documenting Examples of PC-CODE1 execution
DIALOG12 DOC 1280 " " " " PC-CODE1 " "
DIALOG13 DOC 3968 " " " " PC-CODE1 " "
DIALOG14 DOC 3072 " " " " PC-CODE1 " "
DIALOG15 DOC 2816 " " " " PC-CODE1 " "
DIALOG16 DOC 2816 " " " " PC-CODE1 " "
DIALOG17 DOC 7424 " " " " PC-CODE1
DIALOG21 DOC 1664 Documenting Examples of PC-CODE2 execution
DIALOG22 DOC 3200 " " " " PC-CODE2 " "
DIALOG23 DOC 4608 " " " " PC-CODE2 " "
DIALOG24 DOC 1408 " " " " PC-CODE2 " "
DIALOG25 DOC 4224 " " " " PC-CODE2 " "
PC-MENU 153 2307 Source File for PC-MENU (PC-MENU.BAS) version 1.53
PC-HELP 153 1024 Source file for PC-HELP (PC-HELP.BAS) version 1.53
PC-CODE1 153 21219 Source File for PC-CODE1 (PC-CODE1.BAS) version 1.53
PC-CODE2 153 20263 Source File for PC-CODE2 (PC-CODE2.BAS) version 1.53
PC-ZERO 153 689 Source Program to zero out and delete files securely
PC-TAMP1 153 2588 Source Program (BAS) for Anti-tamper-proofing
PC-TAMP2 153 1881 Source Program to Verify PC-TAMP1 Tampering
I-8087 DOC 640 Comments about Intel 8087 chip possibilities/Speed
SAMPLE MSG 1792 A Sample Message used for Encoding in the examples
SAMPLE KEY 472 A Sample Key File used for Encoding/decoding example
NEW1 KEY 512 A Newly computed/resultant key file from PC-CODE1
NEW2 KEY 512 A Newly computed/resulting key file from PC-CODE2
SAMPLE1 COD 2048 Sample code from encoding SAMPLE.MSG with PC-CODE1
SAMPLE2 COD 1792 Sample code from encoding SAMPLE.MSG with PC-CODE2
PC-STAT2 LOG 3840 SAMPLE log Statistics from encoding with PC-CODE2
PC-ZERO DOC 710 Documentation for PC-ZERO.153; Zero and delete files
PC-TAMP1 DOC 761 Documentation for TAMPERED.153 (check security)
FILES DOC 3190 The file you are now looking at (the above text).
42 File(s)
for TAMPERED.153 (check security)
FILES DOC 3190 The file you are now looking at (the
FILES112.TXT
Disk No: 112
Program Title: COMPUTER SECURITY
PC-SIG version: 1.4
This computer security package is a set of user-supported for encrypting
data files to prevent unauthorized access or for transmission across
phone lines. If you have a need to protect sensitive or private
communications, then this disk has a lot to offer you. Please read DOC
files for operating instructions.
Usage: DOS utilities/Security.
Special Requirments: None.
How to Start: Type GO (press enter).
Special Registration: $25.00
File Descriptions:
PC-CODE1 153 Program versions to use with BASRUN.EXE.
PC-CODE2 153 Program versions to use with BASRUN.EXE.
PC-MENU 153 Program versions to use with BASRUN.EXE.
PC-TAMP1 153 Program versions to use with BASRUN.EXE.
PC-TAMP2 153 Program versions to use with BASRUN.EXE.
PC-ZERO 153 Program versions to use with BASRUN.EXE.
NEW1 KEY Key file.
NEW2 KEY Key file.
SAMPLE KEY Key file.
AUTOEXEC BAT Auto execute file.
COPYRIGH T Copyright notes - disk not for export.
DIALOG?? DOC Sample dialogues for using programs (12 files).
FILES DOC Documentation.
I-8087 DOC Source of 8087 BASIC compiler versions.
PC-CODE1 EXE Encodes/decodes files.
PC-CODE2 EXE Encodes/decodes text files.
PC-CODE1 DOC Documentation for PC-CODE.
PC-CODE2 DOC Documentation for PC-CODE.
PC-HELP EXE Type "PC-HELP" for help.
PC-MENU EXE Execute other programs from this one.
PC-STAT2 LOG Sample files.
PC-TAMP1 DOC Documentation for PC-TAMP.
PC-TAMP1 EXE Checks if files have been altered or examined.
PC-TAMP2 EXE Checks if files have been altered or examined.
PC-ZERO DOC Documentation for PC-ZERO.
PC-ZERO EXE Writes "zeros" to file before deleting it.
READ ME Notes from the author.
SAMPLE MSG Sample message.
SAMPLE1 COD Sample file.
SAMPLE2 COD Sample file.
SAMPLE3 COD Sample file.
PC-SIG
1030D East Duane Avenue
Sunnyvale Ca. 94086
(408) 730-9291
(c) Copyright 1985,86,87,88,89 PC-SIG, Inc.
GO.TXT
╔═════════════════════════════════════════════════════════════════════════╗
║ <<<< Disk No: 112 Computer Security >>>> ║
╠═════════════════════════════════════════════════════════════════════════╣
║ ║
║ To print the documentation on this disk, type: ║
║ ║
║ MANUAL (press enter) ║
║ ║
╚═════════════════════════════════════════════════════════════════════════╝
PC-TAMP1.DOC
A N T I T A M P E R C H E C K
This programs checks to see if certain critical files:
(1) PC-CODE1.EXE
(2) PC-CODE2.EXE
(3) PC-CODE1.151
(4) PC-CODE2.151
(5) PC-TAMP1.151
Have been modified or altered in any way other than by the AUTHOR.
This program (PC-TAMP1) verifies the integrity of the security system
by do a careful Bit-summing technique for any of these files above.
If a program or file has been altered - the bitsums will differ as
to what is expected. Also the following display will appear:
========================================================
S E C U R I T Y A L E R T V I O L A T I O N
========================================================
PC-ZERO.DOC
P C - Z E R O
PC-ZERO is a Security feature for zeroing files before Deleting them.
It must be remembered in MS-DOS or PC-DOS that Erasing a file DOES NOT
ERASE THE DATA on a diskette or hard disk - it merely removes the file
from the active directory. Files that are Erased or Deleted with PC-DOS or
MS-DOS leave the actual DATA of the file untouched and intact. Anyone
with a disk utility like the Norton Utilities can still read sensitive
data you thought you Deleted or Erased.
PC-ZERO erases all the data in a file as well as deleting it. Each
character of such a file will be filled with hexadecimal X'FF' bytes
[ or CHR$(255) ] before it is deleted thru DOS.
Directory of PC-SIG Library Disk #0112
Volume in drive A has no label
Directory of A:\
AUTOEXEC BAT 640 2-02-84 8:50p
COPYRIGH T 512 1-22-84 7:16p
FILES112 TXT 2030 1-27-89 9:11a
DIALOG11 DOC 1536 2-09-84 9:10p
DIALOG12 DOC 1280 2-09-84 8:55p
DIALOG13 DOC 3968 2-09-84 10:06p
DIALOG14 DOC 3072 2-09-84 8:51p
DIALOG15 DOC 2816 2-09-84 8:53p
DIALOG16 DOC 2816 2-09-84 8:58p
DIALOG17 DOC 7424 2-09-84 9:09p
DIALOG21 DOC 1664 2-09-84 9:12p
DIALOG22 DOC 3200 2-09-84 9:17p
DIALOG23 DOC 4608 2-09-84 9:20p
DIALOG24 DOC 1408 2-09-84 9:22p
DIALOG25 DOC 4224 2-09-84 9:24p
FILES DOC 3072 1-01-80 12:18a
I-8087 DOC 640 2-09-84 9:29p
NEW1 KEY 512 6-07-84 6:23p
NEW2 KEY 512 6-07-84 6:25p
PC-CODE1 153 21219 6-14-84 7:11p
PC-CODE1 DOC 9486 6-14-84 8:10p
PC-CODE1 EXE 38016 6-14-84 7:13p
PC-CODE2 153 20263 6-11-84 4:37p
PC-CODE2 DOC 6331 6-07-84 6:36p
PC-CODE2 EXE 38528 6-11-84 4:53p
PC-HELP EXE 19328 5-07-84 10:08p
PC-MENU 153 2307 5-12-84 6:49p
PC-MENU EXE 19712 5-12-84 6:53p
PC-STAT2 LOG 3968 6-07-84 6:25p
PC-TAMP1 153 2588 6-14-84 7:46p
PC-TAMP1 DOC 767 5-12-84 7:44p
PC-TAMP1 EXE 21632 6-14-84 7:38p
PC-TAMP2 153 1881 6-14-84 7:45p
PC-TAMP2 EXE 20864 6-14-84 7:48p
PC-ZERO 153 689 5-08-84 7:46p
PC-ZERO DOC 710 4-02-84 10:43p
PC-ZERO EXE 19584 5-08-84 7:47p
READ ME 768 1-22-84 7:13p
SAMPLE KEY 472 6-07-84 6:27p
SAMPLE MSG 1792 1-20-84 8:24p
SAMPLE1 COD 2048 6-07-84 6:23p
SAMPLE2 COD 1792 6-07-84 6:25p
SAMPLE3 COD 2560 6-14-84 6:48p
GO BAT 38 10-19-87 3:56p
GO TXT 694 12-01-88 3:17p
MANUAL BAT 147 6-08-88 3:02p
46 file(s) 304118 bytes
36864 bytes free