Reply To: Extracurricular Challenges
NCC 2024 BYTEINBITS FORUM CIPHER
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Hi codebreakers and cipher crackers,
Here is a cipher for you all to try and break.
Not sure which code will be easiest to copy from in the forum, if you use the one with
line breaks you may need to remove the breaks from your copy before decrypting.
CIPHERTEXT TO BREAK (no line breaks)
F 11 6 F H 11 13 E 11 3 G E 11 13 4 6 G 13 M H 11 9 H H 6 10 9 12 13 H 13 G L 4 11 H K 12 11 G D E 11 L H 6 C 11 D J 11 7 13 G 1 2 13 1 9 K 1 6 3 L 6 10 6 6 L F 11 6 F H 11 2 9 H H 13 12 12 3 4 11 1 6 3 6 K 4 11 H K 9 4 J 3 H D 11 E 9 6 E 7 6 D 9 C 11 4 L 6 10 6 6 L 13 G 1 2 13 1 9 K 1 6 3 13 E 11 4 3 12 12 11 4 4 K 3 H 1 6 3 2 9 H H 2 9 G K 13 H 4 11 K E 9 11 G L 13 G L D E 3 11 11 G 11 7 9 11 4 4 3 12 12 11 11 L 13 G 1 2 13 1 D J 11 10 6 6 L 1 6 3 L 6 D 6 L 13 1 2 9 H H M 11 K 6 E 10 6 D D 11 G D 6 7 6 E E 6 2 L 6 10 6 6 L 13 G 1 2 13 1 J 6 G 11 4 D 1 13 G L K E 13 G 8 G 11 4 4 7 13 8 11 4 1 6 3 C 3 H G 11 E 13 M H 11 M 11 J 6 G 11 4 D 13 G L K E 13 G 8 13 G 1 2 13 1 D J 11 M 9 10 10 11 4 D 7 11 G 2 9 D J D J 11 M 9 10 10 11 4 D 9 L 11 13 4 12 13 G M 11 4 J 6 D L 6 2 G M 1 D J 11 4 7 13 H H 11 4 D 7 11 G 2 9 D J D J 11 4 7 13 H H 11 4 D 7 9 G L 4 D J 9 G 8 M 9 10 13 G 1 2 13 1 F 11 6 F H 11 K 13 C 6 3 E 3 G L 11 E L 6 10 4 M 3 D K 6 H H 6 2 6 G H 1 D 6 F L 6 10 4 K 9 10 J D K 6 E 4 6 7 11 3 G L 11 E L 6 10 4 13 G 1 2 13 1 2 J 13 D 1 6 3 4 F 11 G L 1 11 13 E 4 M 3 9 H L 9 G 10 7 13 1 M 11 L 11 4 D E 6 1 11 L 6 C 11 E G 9 10 J D M 3 9 H L 13 G 1 2 13 1 F 11 6 F H 11 E 11 13 H H 1 G 11 11 L J 11 H F M 3 D 7 13 1 13 D D 13 12 8 1 6 3 9 K 1 6 3 J 11 H F D J 11 7 J 11 H F F 11 6 F H 11 13 G 1 2 13 1 10 9 C 11 D J 11 2 6 E H L D J 11 M 11 4 D 1 6 3 J 13 C 11 13 G L 1 6 3 2 9 H H 10 11 D 8 9 12 8 11 L 9 G D J 11 D 11 11 D J 10 9 C 11 D J 11 2 6 E H L D J 11 M 11 4 D 1 6 3 J 13 C 11 13 G 1 2 13 1
CIPHERTEXT TO BREAK: (wrapped characters to 40 per line)
F 11 6 F H 11 13 E 11 3 G E 11 13 4 6 G 13 M H 11 9 H H 6 10 9 12 13 H 13 G L 4 11 H K 12 11 G
D E 11 L H 6 C 11 D J 11 7 13 G 1 2 13 1 9 K 1 6 3 L 6 10 6 6 L F 11 6 F H 11 2 9 H H 13
12 12 3 4 11 1 6 3 6 K 4 11 H K 9 4 J 3 H D 11 E 9 6 E 7 6 D 9 C 11 4 L 6 10 6 6 L 13 G
1 2 13 1 9 K 1 6 3 13 E 11 4 3 12 12 11 4 4 K 3 H 1 6 3 2 9 H H 2 9 G K 13 H 4 11 K E 9
11 G L 13 G L D E 3 11 11 G 11 7 9 11 4 4 3 12 12 11 11 L 13 G 1 2 13 1 D J 11 10 6 6 L 1 6 3
L 6 D 6 L 13 1 2 9 H H M 11 K 6 E 10 6 D D 11 G D 6 7 6 E E 6 2 L 6 10 6 6 L 13 G 1 2
13 1 J 6 G 11 4 D 1 13 G L K E 13 G 8 G 11 4 4 7 13 8 11 4 1 6 3 C 3 H G 11 E 13 M H 11 M
11 J 6 G 11 4 D 13 G L K E 13 G 8 13 G 1 2 13 1 D J 11 M 9 10 10 11 4 D 7 11 G 2 9 D J D J
11 M 9 10 10 11 4 D 9 L 11 13 4 12 13 G M 11 4 J 6 D L 6 2 G M 1 D J 11 4 7 13 H H 11 4 D 7
11 G 2 9 D J D J 11 4 7 13 H H 11 4 D 7 9 G L 4 D J 9 G 8 M 9 10 13 G 1 2 13 1 F 11 6 F
H 11 K 13 C 6 3 E 3 G L 11 E L 6 10 4 M 3 D K 6 H H 6 2 6 G H 1 D 6 F L 6 10 4 K 9 10
J D K 6 E 4 6 7 11 3 G L 11 E L 6 10 4 13 G 1 2 13 1 2 J 13 D 1 6 3 4 F 11 G L 1 11 13 E
4 M 3 9 H L 9 G 10 7 13 1 M 11 L 11 4 D E 6 1 11 L 6 C 11 E G 9 10 J D M 3 9 H L 13 G 1
2 13 1 F 11 6 F H 11 E 11 13 H H 1 G 11 11 L J 11 H F M 3 D 7 13 1 13 D D 13 12 8 1 6 3 9 K
1 6 3 J 11 H F D J 11 7 J 11 H F F 11 6 F H 11 13 G 1 2 13 1 10 9 C 11 D J 11 2 6 E H L D
J 11 M 11 4 D 1 6 3 J 13 C 11 13 G L 1 6 3 2 9 H H 10 11 D 8 9 12 8 11 L 9 G D J 11 D 11 11
D J 10 9 C 11 D J 11 2 6 E H L D J 11 M 11 4 D 1 6 3 J 13 C 11 13 G 1 2 13 1
If you break the cipher without the proper algorithm being used then still WELL DONE
after all the breaking of the cipher is the whole point of being a spy!
But if you discovered and used the correct algorithm then encipher the following
IDECLARETHATIAMANELITECODECRAKER
and post the ciphertext to the forums.
The MD5 of the ciphertext should be E6A408E0D4BC8AC70181644B4E9AD166