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Level II Challenges (149)

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

The SIGABA Challenge — Part 2

[lasry-27] - 7 users already solved this challenge.
 
 
 

The SIGABA was a highly secure encryption machine used by the US for strategic communications in WWII. As in part 1 of this series of challenges, you are provided with a partial known-plaintext, and some information about the key settings. However, in this part you get less information about the key.
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Published on: 2020-03-05 19:44
Maximum number of attempts for this challenge: 15

All successful users of this challenge

Rank User (#7) Achieved points (Global score) y-m-d - h:m:s

S Combes (jerva) 2000 (170300) 2020-03-05 23:35:49
Kurt Gebauer (Yokozuna) 1576 (266506) 2020-03-11 11:19:06
Dominik M. (Sgt. Pepper) 1406 (126749) 2020-03-21 19:54:11
Snake (snk) 1406 (185894) 2020-03-21 21:49:15
#5 D3d4lu5 (D3d4lu5) 1378 (343788) 2020-03-26 17:57:45
#6 Nicolas (nicosPavlov) 1199 (241319) 2020-08-16 05:07:29
#7 Eugene (lim0n) 1190 (161187) 2020-09-10 22:24:09
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