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Level II Challenges (158)

Page 1 of the challenges in Level II, ordered by date posted (the most recent appear first).

The LoRa Cipher: Logic Randomness — Part 1

[theofanidis-10] - 19 users already solved this challenge.
 
 
 

LoRa calculates the ciphertext by using a logic expression as key. The ciphertext unusually contains large bitstreams too. Could you find the logic expression from a given ciphertext?
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Published on: 2020-02-19 20:31
Maximum number of attempts for this challenge: 15

All successful users of this challenge

Rank User (#19) Achieved points (Global score) y-m-d - h:m:s

Viktor (Veselovský) 2000 (169444) 2020-02-19 22:35:21
Kurt Gebauer (Yokozuna) 2000 (282608) 2020-02-20 02:32:51
Dominik M. (Sgt. Pepper) 2000 (128575) 2020-02-20 04:28:34
Eugene (lim0n) 2000 (178540) 2020-02-20 08:26:23
#5 Alain Collignon (vexilla72) 2000 (123666) 2020-02-20 08:50:23
#6 madness (madness) 2000 (67678) 2020-02-20 16:41:35
#7 Snake (snk) 2000 (187783) 2020-02-20 17:26:23
#8 Armin Krauss (argh) 2000 (206965) 2020-02-20 20:27:17
#9 Derek Hatton (alfred_noble) 1613 (33998) 2020-02-24 17:03:34
#10 Mir Dim (mir0soft) 1576 (79760) 2020-02-25 07:51:23
#11 pcback (langkhach11112) 1502 (4860) 2020-02-28 16:00:00
#12 H. Lautenschlager (helmi) 1444 (56470) 2020-03-03 18:52:35
#13 George Lasry (george4096) 1330 (399565) 2020-03-21 21:04:03
#14 sarah b (silva) 1327 (47847) 2020-03-23 08:49:21
#15 D3d4lu5 (D3d4lu5) 1244 (363488) 2020-05-12 23:50:49
#16 Marco Cinelli (Snap) 1230 (37769) 2020-05-30 15:17:23
#17 Em Doulgerakis (Greko) 1164 (193799) 2020-12-29 16:24:22
#18 Luigi Tomelli (archstanton) 1147 (127538) 2021-05-25 18:35:49
#19 Eric (ExAstris) 1147 (54941) 2021-05-26 03:14:48
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   +++    [15:47 - 12.06.2021] Airixis solved the Level I challenge 'Original Caesar Cipher'    +++    [15:40 - 12.06.2021] Airixis solved the Level I challenge 'Number Sequence'    +++    [21:26 - 11.06.2021] george4096 solved the Level I challenge 'Number Sequence — Part 10'    +++    [20:44 - 11.06.2021] george4096 solved the Level I challenge 'Number Sequence — Part 8'    +++    [15:40 - 11.06.2021] george4096 solved the Level I challenge 'Polyhomophonic Substitution — Part 1'    +++