Level II Challenges (135)
Page 1 of the challenges in
Level II, ordered by date posted (the most recent appear first).
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The challenges for the weakened Handycipher serve as an exercise and use an intentionally weakened version of Handycipher. Part 1 is a partially-known-plaintext challenge with a helping additional information.
Handycipher is a newly designed cipher to permit pen-and-paper encrypting and decrypting, while providing a significantly high level of security. Read more...
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Click here to download the additional file of the challenge.
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Author:
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Published on: 2015-05-13 11:47 |
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Maximum number of attempts for this challenge: 15 |
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All successful users of this challenge
| Rank |
User (#15) |
Achieved points (Global score) |
y-m-d - h:m:s |
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Kurt Gebauer (Yokozuna)
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2000 (180593) |
2015-05-13 12:44:32 |
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Julia Bernotat (El Greco )
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1613 (81129) |
2015-05-17 18:02:13 |
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Armin Krauss (argh)
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1485 (190214) |
2015-05-22 19:32:50 |
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Alain (Integral)
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1362 (207924) |
2015-06-05 15:01:59 |
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#5 |
Michael Möller (michaelm)
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1235 (175129) |
2015-08-15 16:25:41 |
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#6 |
zahir mohsen moradi (ariobarzan)
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1229 (99757) |
2015-08-22 12:40:27 |
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#7 |
Karl Schutt (günter)
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1167 (41550) |
2016-03-07 05:20:49 |
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#8 |
Em Doulgerakis (Greko)
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1156 (131437) |
2016-05-18 13:14:59 |
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#9 |
George Lasry (george4096)
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1128 (305615) |
2017-05-28 22:01:31 |
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#10 |
Nicolas (nicosPavlov)
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1119 (151166) |
2018-01-19 02:26:13 |
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#11 |
D3d4lu5 (D3d4lu5)
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1111 (302572) |
2018-10-26 07:56:33 |
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#12 |
Viktor (Veselovský)
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1108 (157163) |
2019-02-22 19:24:31 |
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#13 |
Snake (snk)
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1108 (90574) |
2019-03-06 13:55:44 |
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#14 |
Danny Higgins (hamster147)
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1107 (38289) |
2019-05-02 09:21:44 |
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#15 |
Random Dude (rnd)
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1106 (97213) |
2019-06-25 00:12:17 |
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