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Level I Challenges (82)

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

Cryptanalysis Hacking Puzzles — Part 1

[martins-01] - 17 users already solved this challenge, 13 are working on it.
 
 
 

Three messages were delivered — two encrypted, one in clear. Can you solve the puzzle?
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Published on: 2018-10-26 20:33
Maximum number of attempts for this challenge: 15

All successful users of this challenge

Rank User (#17) Achieved points (Global score) y-m-d - h:m:s

Viktor (Veselovský) 200 (151602) 2018-10-26 22:47:28
D3d4lu5 (D3d4lu5) 200 (273573) 2018-10-27 08:18:21
Dominik M. (Sgt. Pepper) 200 (97919) 2018-10-27 14:30:52
Random Dude (rnd) 150 (83811) 2018-10-28 01:43:34
#5 Snake (snk) 150 (77889) 2018-10-28 17:45:23
#6 E.T (Ertheb) 150 (78180) 2018-10-28 18:58:04
#7 Armin Krauss (argh) 117 (185115) 2018-11-01 19:25:26
#8 Rainer Zufall (kiekuk) 113 (56786) 2018-11-03 12:57:49
#9 Kurt Gebauer (Yokozuna) 113 (153663) 2018-11-03 15:32:07
#10 H. Lautenschlager (helmi) 113 (32747) 2018-11-03 17:33:23
#11 Alain Collignon (vexilla72) 111 (87833) 2018-11-04 11:04:29
#12 Hans Peter (hanspeter) 108 (52256) 2018-11-08 18:35:37
#13 Johnatan (RazorBest) 103 (1105) 2018-12-03 17:38:42
#14 Michael (FoM) 102 (34465) 2018-12-27 19:40:37
#15 S (Zyphe) 101 (10461) 2019-01-13 16:47:18
#16 v1k1ng (v1k1ng) 101 (101) 2019-01-21 22:25:16
#17 Hughes (hughes) 101 (7925) 2019-04-30 09:51:16
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   +++    [11:29 - 24.05.2019] dokyriak solved the Level II challenge 'Cracking SHA1-Hashed Passwords'    +++    [11:16 - 24.05.2019] dokyriak solved the Level I challenge 'Factorization Cipher — Part 1'    +++    [23:00 - 23.05.2019] Theofanidis solved the Level II challenge 'Handycipher made in love — Part 2'    +++    [19:57 - 23.05.2019] joregi solved the Level I challenge 'Autokey Cipher'    +++    [15:18 - 23.05.2019] Biork solved the Level I challenge 'A modified homophonic cipher with reduced alphabets — Part 1'    +++