Level III Challenges (72)
All challenges in
Level III, ordered by date posted (the most recent appear first).
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CMEA 2
[stamp-11] - 27 users already solved this challenge, 1 is working on it.
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CMEA is a block cipher and was one of the 4 cryptographic primitives of the mobile communications network in the US. It is your challenge to perform a known-plaintext attack on CMEA with 40 known plaintext blocks given. Read more...
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Author:
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Published on: 2010-12-06 00:00 |
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Maximum number of attempts for this challenge: 20 |
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All successful users of this challenge
| Rank |
User (#27) |
Achieved points (Global score) |
y-m-d - h:m:s |
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Armin Krauss (argh)
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17412 (206664) |
2010-12-14 17:00:33 |
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Wolfgang Weisser (wowmyst)
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15101 (33108) |
2011-03-15 20:30:10 |
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J. M. (jomandi)
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14472 (113270) |
2011-08-07 11:09:20 |
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Flip (Flip)
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14396 (31107) |
2011-09-07 18:30:19 |
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#5 |
Viktor (Veselovský)
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14086 (169244) |
2012-03-11 13:41:15 |
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#6 |
Seth Kintigh (DarkFibre)
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14050 (79471) |
2012-04-11 00:54:45 |
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#7 |
Luigi Tomelli (archstanton)
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13882 (113164) |
2012-10-02 16:30:24 |
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#8 |
Kurt Gebauer (Yokozuna)
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13846 (274906) |
2012-11-17 15:01:27 |
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#9 |
zahir mohsen moradi (ariobarzan)
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13696 (99757) |
2013-07-15 07:57:55 |
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#10 |
Francisco Moraes (fmoraes)
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13631 (90044) |
2013-11-24 23:47:34 |
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#11 |
Alain (Integral)
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13617 (207924) |
2013-12-26 12:16:10 |
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#12 |
George (Theofanidis)
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13616 (119711) |
2013-12-27 21:39:19 |
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#13 |
Em Doulgerakis (Greko)
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13614 (137134) |
2014-01-01 00:00:59 |
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#14 |
Bart den Hartog (Bart13)
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13551 (148936) |
2014-06-04 12:37:55 |
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#15 |
S Combes (jerva)
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13451 (204567) |
2015-04-02 14:39:05 |
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#16 |
Julia Bernotat (El Greco )
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13370 (81129) |
2016-02-01 16:13:43 |
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#17 |
Nicolas (nicosPavlov)
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13305 (257791) |
2016-11-27 18:02:06 |
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#18 |
Javantea (Javantea)
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13304 (40816) |
2016-11-30 10:01:22 |
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#19 |
chris (c2)
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13282 (51973) |
2017-03-22 08:35:23 |
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#20 |
Mir Dim (mir0soft)
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13281 (79760) |
2017-03-29 12:18:20 |
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#21 |
George Lasry (george4096)
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13265 (369910) |
2017-06-22 21:57:33 |
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#22 |
D3d4lu5 (D3d4lu5)
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13195 (359988) |
2018-08-21 12:05:50 |
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#23 |
Random Dude (rnd)
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13184 (98856) |
2018-11-06 11:37:31 |
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#24 |
Jacob (NohatCoder)
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13155 (13455) |
2019-06-04 09:14:52 |
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#25 |
Mike (RogueRamblers)
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13128 (63452) |
2019-12-31 00:27:45 |
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#26 |
Alain Collignon (vexilla72)
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13127 (122384) |
2020-01-04 15:44:08 |
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#27 |
Eugene (lim0n)
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13100 (169787) |
2020-08-22 08:23:46 |
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