ENCODE TEXT
FILE INFORMATION
FILENAME(S): ENCODE TEXT
FILE TYPE(S): PRG
FILE SIZE: 3.7K
FIRST SEEN: 2025-10-19 22:49:37
APPEARS ON: 1 disk(s)
FILE HASH
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FOUND ON DISKS (1 DISKS)
| DISK TITLE | FILENAME | FILE TYPE | COLLECTION | TRACK | SECTOR | ACTIONS |
|---|---|---|---|---|---|---|
| GOLD DISK 6 | ENCODE TEXT | PRG | Radd Maxx | 9 | 0 | DOWNLOAD FILE |
FILE CONTENT & ANALYSIS
> DETECTED: COMMODORE BASIC PROGRAM (LOAD ADDRESS $0801)
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00000EC0: C7 16 C0 03 89 32 30 00 D8 16 CA 03 8B 41 24 B3 |.....20......A$.|
00000ED0: B1 22 5F 22 A7 32 30 30 00 EB 16 D4 03 99 20 22 |."_".200...... "|
00000EE0: 93 22 3A 20 9E 20 34 39 31 35 32 00 00 00 |.": . 49152... |
....... (C) GOLD DISK INC.?.... 53281,0:
. 53280,0: .G(14);G(8).Q.... ".... PR
OGRAMMING CHALLENGE OF THE MONTH"...(.."
. ..................................".
I.2.."... ENCRIPTION / DECRIPTION
"...<..". .......................
"...F..". .............................
......".L.P.." .
.".{.Z.." . .<F1> BACKGROUND
. ."...D.." .
.".W.N.." . .<F3
> DESCRIPTION OF CHALLENGE. ."...X.."
. .".3..
.." . .<F5> SOLUTION.
.".`...." .
."......" . .<F7> EXTENDED NOTES
. ."... .." .
."......" . .<_> RE
TURN TO .GOLD DISK. MENU. ."......" .
.".G....
" ...................................".
\.H..A$:.A$..".".430...R.. "...
BACKGROUND"...... ".
...........".P...."ENCRIPTION / DECRIPT
ION METHODS ARE"......"BEING USED IN VAR
IOUS AREAS OF INDUSTRY.";......"SOME EXA
MPLES ARE:".I....". 1) PASSING 'CODED' I
NFORMATION AMONG".T...." FRIENDS F
OR GENERAL INTEREST"......" 2) SECURITY
INDUSTRY (EG D.O.D.)".H.".." 3) GENERAL
INDUSTRY (FOR SENSITIVE"...,.." DA
TA LIKE PERSONEL AND HEALTH)".$.6..".ONE
COMMON TECHNIQUE IN THE ENCRIPTION".Q.@
.."FIELD USES THE MODULO OPERATOR. THIS
"...J.."OPERATOR RETURNS THE 'REMAINDER'
OF X/Y"...T.."FOR 'X MOD Y'. TRANSLATE
D TO BASIC:".S.^..". (X MOD Y) = X -
INT(X/Y)*Y"...H..".. ................
................"./.R.." .. <F3> DESC
RIPTION OF CHALLENGE..".].|.." .. <_>
GOLD DISK MENU .."......"
................................";......
A$:.A$.".".440......A$."_".4010...... 40
0.J....A$..".".670......"... DESCR
IPTION OF CHALLENGE"...B..". .....
....................".M.L..".A SIMPLE ME
THOD OF ENCODING A 'MESSAGE'".{.V.."IS T
O ADD A CONSTANT TO EACH LETTER OF".....
."THE MESSAGE. TO KEEP IT THE PRINTABLE
".X...."RANGE OF A-Z, 0-9 AND SOME SPECI
AL CHAR"......"(ASCII 32 TO 95), THE MOD
ULO OPERATOR"./...."CAN BE USED. IF ALL
WE DID WAS TO".`...."OFFSET EACH LETTER
, A PERSON CAN 'BREAK'";......"THE CODED
MESSAGE BY LOOKING FOR"......"THE MOST
COMMON CHARACTER, AND MAKE"...&.."TRANSL
ATIONS TO COMMON CHARACTERS LIKE"...0.."
SPACES AND VOWELS. THEREFORE, A MULTI-"
.>.:.."CHARACTER KEY OR A SEQUENCE OF OF
FSETS".K.D.."WOULD DECREASE THE CHANCE O
F THE CODE"...N.."BEING DECIPHERED."...X
..".YOUR CHALLENGE: WRITE A PROGRAM TO".
Y.B.." DEMONSTRATE MULTI-CHARACTER KEY
"...L.." ENCRIPTION AND DECRIPTION".,.
V.."....................................
...".T.... ". HIT ANY KEY TO CONTI
NUE".G....A$:.A$."".650.O....20......A$.
.".".730...... "............
LOADING SOLUTION"......".....LOAD";G(34)
;"ENCODE SOLUTION";G(34);",8."......631,
13:.632,82:.633,85:.634,78:.635,13...F..
198,5.#.P...4.Z..A$..".".970.Y.... "..
EXTENDED NOTES".~.... ".
..............."......"OBVIOUSLY,
TO DECIPHER THE CODED".W...."MESSAGE, WE
SIMPLY SUBTRACT THE ORIGINAL";......"OF
FSET. YOU WILL FIND A BASIC PROGRAM".3.
..."DEMONSTRATING ENCRIPTION/DECRIPTION
ON".Z. .."THIS DISK BY THE NAME: 'ENCODE
'"...*..".HOW CAN WE MAKE IT HARDER FOR
OTHERS TO"...4.."BREAK THE CODE? HERE I
S A SMALL LIST".N.>.."OF SUGGESTIONS:"..
.H..". * USE A INFINITELY LONG SEQUENCE
OF".(.R.." OFFSETS LIKE PRIME NUMBERS,
PI, OR".P.\.." OTHER NON-REPEATING SE
QUENCES".}.F.." * USE ALL CODES WITHIN A
BYTE RATHER"...P.." THAN ONLY THE PRI
NTABLE RANGE".T.Z.. " * TRY USING THE RO
TATION, TOGGLING OR"...... " REFLECTIO
N OF BITS WITHIN A BYTE".-.... " * USE 2
OR MORE KEYS - DESIGN IT SO".Z.... "
THAT ONE KEY IS USED TO WRITE THE"......
" MESSAGE & ANOTHER KEY TO READ IT"..
.... ".. HIT ANY KEY TO CONTINUE";....
..A$:.A$."".950.G....20.X.J..A$.."_".200
...T.. ".": . 49152...
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