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Level I Challenges (89)

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

Post-Quantum Cryptography: Unbalanced Oil and Vinegar System — Part 1

[wolf-01] - 95 users already solved this challenge, 2 are working on it.
 
 
 

By the time quantum computers exist, the actual signing algorithms are not secure anymore. Then one can switch e.g. to so-called "Unbalanced Oil and Vinegar" systems. It is your challenge to break a simplified version of such a system today already.
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Published on: 2011-04-07 00:00
Maximum number of attempts for this challenge: 20

All successful users of this challenge

Rank User (#95) Achieved points (Global score) y-m-d - h:m:s

mischa (mmisc) 200 (22426) 2011-04-07 13:07:53
Armin Krauss (argh) 200 (206965) 2011-04-07 18:43:13
andrewl (andrewl) 150 (1810) 2011-04-08 17:29:54
Roland Jansen (roland) 114 (17607) 2011-04-13 12:30:56
#5 Christof Kleber (Loki) 113 (6051) 2011-04-14 10:30:11
#6 Daniel Fretwell (fretty) 101 (30107) 2011-06-23 14:34:38
#7 Fabian Bendun (benfa) 101 (8697) 2011-06-23 15:43:03
#8 Martin Bauser (stef_the_chef) 101 (4329) 2011-07-10 21:00:16
#9 Seth Kintigh (DarkFibre) 101 (79471) 2011-07-14 23:57:53
#10 Christian Inci (ch100) 101 (9253) 2011-07-20 03:13:53
#11 Robbt Neid (Das Tupel) 101 (9403) 2011-07-24 00:03:52
#12 Grandmaster B (Brewer) 101 (508) 2011-07-25 00:05:08
#13 asdf1 asdf1 (asdf1) 101 (1270) 2011-07-28 21:10:10
#14 Viktor (Veselovský) 101 (169444) 2011-07-29 14:44:59
#15 Thomas Gonda (TomG) 101 (36291) 2011-08-09 09:41:32
#16 David (aki321) 101 (27482) 2011-08-21 22:22:39
#17 Dano (Dano) 101 (14610) 2011-09-09 19:41:15
#18 J. M. (jomandi) 101 (113270) 2011-09-21 00:02:26
#19 dbuq (dbuq) 101 (22762) 2011-09-28 12:33:23
#20 The Killer (Killer) 101 (42393) 2011-10-20 21:20:09
#21 Bart den Hartog (Bart13) 100 (148936) 2011-11-02 03:19:14
#22 Keith Randall (randall77) 100 (31011) 2011-11-03 23:21:48
#23 Nathan (Witten) 100 (25326) 2011-12-05 13:01:49
#24 Martin Härterich (HaeM) 100 (15149) 2012-02-14 16:09:20
#25 George (Theofanidis) 100 (132517) 2012-02-25 16:57:57
#26 Luigi Tomelli (archstanton) 100 (127538) 2012-03-08 10:26:20
#27 Kurt Gebauer (Yokozuna) 100 (282608) 2012-04-03 12:39:06
#28 Aliazer (Aliazer) 100 (12521) 2012-04-20 20:42:25
#29 Thomas Lambert (lambert) 100 (38594) 2012-04-21 13:57:11
#30 Dusan (xxdradus) 100 (40436) 2012-04-25 15:31:09
#31 Daniel Demmler (dd23) 100 (8942) 2012-04-26 17:28:51
#32 Michel Van Caneghem (vancan) 100 (49719) 2012-05-06 17:30:49
#33 E.T (Ertheb) 100 (81809) 2012-08-25 09:08:35
#34 Em Doulgerakis (Greko) 100 (193799) 2012-08-29 12:17:19
#35 P (PP65477) 100 (700) 2012-09-23 19:35:36
#36 KW (qwer*) 100 (13963) 2012-09-23 20:30:34
#37 H. Lautenschlager (helmi) 100 (57600) 2012-09-29 21:25:54
#38 Julia Werdelmann (jw) 100 (10407) 2012-11-17 17:54:16
#39 Hans Peter (hanspeter) 100 (52356) 2013-01-28 01:39:10
#40 Ramon Rojas (superme) 100 (3409) 2013-04-19 18:09:47
#41 RPH (derichard) 100 (27044) 2013-04-19 23:57:43
#42 Snake (snk) 100 (187783) 2013-04-28 19:37:15
#43 Steve (Samacian) 100 (23915) 2013-07-17 08:37:48
#44 Almut (problelmo) 100 (45992) 2013-08-23 20:33:20
#45 zahir mohsen moradi (ariobarzan) 100 (99757) 2013-09-15 19:32:29
#46 Alexander (cruachan) 100 (16051) 2013-10-22 14:08:42
#47 Boris (Kaasu) 100 (16566) 2013-11-14 19:49:35
#48 fabian (faru) 100 (300) 2013-11-20 21:53:50
#49 Francisco Moraes (fmoraes) 100 (90044) 2013-11-28 04:34:16
#50 Brad (braddrew) 100 (15878) 2013-12-19 08:14:56
#51 Alain (Integral) 100 (207924) 2013-12-30 22:56:08
#52 Kim H. S. (tenchijin) 100 (25468) 2014-02-03 12:56:41
#53 Karl Schutt (günter) 100 (44374) 2014-04-25 21:14:15
#54 Pavel (haw) 100 (22728) 2014-06-14 20:36:36
#55 Robert (rm) 100 (56475) 2014-07-31 23:03:19
#56 Julia Bernotat (El Greco ) 100 (81129) 2014-08-06 18:02:36
#57 julius gaius (julius) 100 (25581) 2014-08-08 13:25:36
#58 roehm (roehm) 100 (5399) 2015-02-04 16:20:08
#59 Andreas Frerichs (Ossili) 100 (33266) 2015-02-27 13:05:54
#60 Benedikt M. (bm91) 100 (4112) 2015-03-17 21:32:07
#61 Claude Vaillancourt (Cl3v3r) 100 (44129) 2015-03-18 16:38:06
#62 Rainer Zufall (kiekuk) 100 (56786) 2015-04-04 10:39:12
#63 Krib (Krib) 100 (100) 2015-04-27 16:04:03
#64 Sean (Kavanaugh) 100 (29143) 2015-08-18 19:56:49
#65 Javantea (Javantea) 100 (40816) 2015-08-21 04:56:43
#66 Scombes (jerva) 100 (266541) 2015-10-28 15:53:33
#67 S (Zyphe) 100 (13361) 2015-11-01 17:59:23
#68 Dominik M. (Sgt. Pepper) 100 (128575) 2016-05-04 15:40:26
#69 Norbert Biermann (Norbert) 100 (47790) 2016-09-21 21:29:43
#70 Nicolas (nicosPavlov) 100 (257791) 2016-10-15 07:45:31
#71 Alain Collignon (vexilla72) 100 (123666) 2016-11-17 20:22:48
#72 Peter (Garnet) 100 (14234) 2016-11-25 12:55:51
#73 chris_3stones (3stones) 100 (38845) 2016-11-26 12:58:10
#74 Michael (FoM) 100 (57794) 2017-02-02 09:42:31
#75 chris (c2) 100 (51973) 2017-03-27 15:49:45
#76 Daniel Walder (ibex) 100 (14672) 2017-05-07 23:42:43
#77 Mir Dim (mir0soft) 100 (79760) 2017-05-13 07:34:50
#78 Kasia (kasia-tutej) 100 (53366) 2017-06-07 21:01:42
#79 D3d4lu5 (D3d4lu5) 100 (363488) 2017-06-26 19:41:50
#80 nimroth (nimroth cynthor) 100 (6021) 2017-11-29 00:40:30
#81 Eric (ExAstris) 100 (56037) 2018-05-28 20:40:44
#82 Random Dude (rnd) 100 (103645) 2018-07-02 15:37:06
#83 Anna Lena Rotthaler (AnLeRo) 100 (1299) 2018-07-06 15:40:05
#84 Eugene (lim0n) 100 (195334) 2019-06-24 10:48:13
#85 Stephan (Stephje1978) 100 (27064) 2019-07-21 00:29:23
#86 Julian (Lemmynator) 100 (20822) 2019-10-13 11:22:33
#87 Mike (RogueRamblers) 100 (81614) 2019-12-30 02:09:02
#88 madness (madness) 100 (71592) 2020-03-22 01:38:16
#89 cworstell (ace2) 100 (6270) 2020-04-05 17:05:45
#90 sarah b (silva) 100 (52424) 2020-05-25 09:12:29
#91 Nofre Tete (noffi) 100 (26507) 2020-05-27 00:18:01
#92 DS (DS8279) 100 (34191) 2020-07-22 15:11:07
#93 Georgius Stolte (HazmatsFear) 100 (16071) 2020-08-02 08:18:05
#94 Marco Cinelli (Snap) 100 (37769) 2021-03-01 13:31:26
#95 Antares (Antares) 100 (32880) 2021-07-18 05:34:00
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