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Level II Challenges (160)

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

Unusual encryption using a diophantine equation

[veselovsky-01] - 63 users already solved this challenge, 3 are working on it.
 
 
 

In order to calculate the private keys of the RSA algorithm, it is necessary to factorize large numbers. How difficult is it if we replace x*y by some diophantine equation?
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Published on: 2011-09-02 12:57
Maximum number of attempts for this challenge: 20

All successful users of this challenge

Rank User (#63) Achieved points (Global score) y-m-d - h:m:s

Daniel Fretwell (fretty) 2000 (30107) 2011-09-02 17:57:42
The Killer (Killer) 2000 (42393) 2011-09-02 22:53:54
Armin Krauss (argh) 2000 (206965) 2011-09-02 23:05:49
Seth Kintigh (DarkFibre) 2000 (79471) 2011-09-03 01:48:33
#5 mischa (mmisc) 1725 (22426) 2011-09-05 00:47:09
#6 kyprizel (kyprizel) 1613 (20795) 2011-09-07 11:26:53
#7 J. M. (jomandi) 1547 (113270) 2011-09-08 17:22:49
#8 Peter Mustermann (Gummiboot) 1469 (60285) 2011-09-12 19:11:06
#9 Keith Randall (randall77) 1237 (31011) 2011-12-03 06:15:08
#10 Nathan (Witten) 1229 (25326) 2011-12-13 12:25:12
#11 Flo Geht_dich gar_nichts_an (flo) 1229 (6271) 2011-12-14 11:29:10
#12 Bart den Hartog (Bart13) 1202 (148936) 2012-02-05 02:46:39
#13 Luigi Tomelli (archstanton) 1200 (127538) 2012-02-09 13:35:14
#14 Michel Van Caneghem (vancan) 1199 (49719) 2012-02-12 09:08:42
#15 Christian (Etschupu) 1164 (31788) 2012-07-11 10:24:23
#16 Thomas Lambert (lambert) 1158 (38594) 2012-08-27 09:49:27
#17 Hank (hanky) 1152 (24373) 2012-10-21 06:14:26
#18 Kurt Gebauer (Yokozuna) 1147 (282608) 2012-12-08 18:06:24
#19 Em Doulgerakis (Greko) 1132 (193799) 2013-07-14 11:38:22
#20 Felix (Flix) 1129 (13812) 2013-08-29 23:34:11
#21 zahir mohsen moradi (ariobarzan) 1128 (99757) 2013-09-14 10:26:56
#22 Alain (Integral) 1123 (207924) 2014-01-14 16:59:44
#23 George (Theofanidis) 1122 (132517) 2014-02-05 20:13:14
#24 Ralf Stephan (rwst) 1122 (25229) 2014-02-09 08:30:05
#25 hellman (hellman) 1121 (14862) 2014-03-13 10:15:36
#26 Thomas Schmucker (dg) 1118 (26066) 2014-05-25 08:33:26
#27 baz (oneiron) 1116 (12353) 2014-08-13 04:29:13
#28 julius gaius (julius) 1115 (25581) 2014-08-29 10:46:47
#29 Francisco Moraes (fmoraes) 1113 (90044) 2014-11-10 19:48:37
#30 Julia Bernotat (El Greco ) 1111 (81129) 2015-02-03 18:02:49
#31 Erik (Erox) 1107 (26141) 2015-08-01 16:19:49
#32 Sean (Kavanaugh) 1106 (29143) 2015-09-06 16:26:08
#33 Szabó Zoltán (szabo.z87) 1105 (55604) 2015-11-05 14:57:42
#34 Scombes (jerva) 1105 (266541) 2015-11-05 20:37:26
#35 Robert (rm) 1105 (56475) 2015-12-07 14:01:15
#36 Rainer Zufall (kiekuk) 1103 (56786) 2016-03-29 12:12:07
#37 Dominik M. (Sgt. Pepper) 1100 (128575) 2016-10-05 23:55:24
#38 Nicolas (nicosPavlov) 1099 (257791) 2016-11-18 07:38:36
#39 Martin (martinbucher) 1098 (38365) 2017-01-02 16:13:34
#40 Tristan1473 (Tristan1473) 1098 (20432) 2017-01-22 09:40:26
#41 chris (c2) 1097 (51973) 2017-04-26 16:10:50
#42 T (Wagner) 1097 (16988) 2017-04-30 23:58:02
#43 Kasia (kasia-tutej) 1096 (53366) 2017-06-05 18:11:05
#44 D3d4lu5 (D3d4lu5) 1096 (363488) 2017-07-14 18:36:14
#45 George Lasry (george4096) 1095 (422251) 2017-08-06 00:43:00
#46 Hajoe (Tintin-Muc) 1095 (6923) 2017-08-20 23:42:13
#47 E.T (Ertheb) 1093 (81809) 2018-02-18 21:08:24
#48 Snake (snk) 1092 (187783) 2018-07-16 16:40:47
#49 Random Dude (rnd) 1091 (103645) 2018-10-13 02:35:30
#50 kilink (kilink) 1090 (8053) 2018-11-18 21:49:22
#51 Klaus (kumaus) 1089 (22017) 2019-04-04 16:16:56
#52 Marco Cinelli (Snap) 1089 (37769) 2019-05-15 14:23:41
#53 Eugene (lim0n) 1089 (195334) 2019-06-01 14:17:38
#54 Gerd Wilts (gerdw) 1088 (50634) 2019-07-24 22:41:03
#55 Danny Higgins (hamster147) 1088 (39638) 2019-08-18 22:28:47
#56 Alain Collignon (vexilla72) 1088 (123666) 2019-09-21 20:55:00
#57 Derek Hatton (alfred_noble) 1088 (33998) 2019-10-10 00:38:54
#58 madness (madness) 1086 (71592) 2020-03-11 22:21:24
#59 chris_3stones (3stones) 1086 (38845) 2020-06-03 15:11:46
#60 Jean-Francois (Muskrat) 1084 (19013) 2021-01-18 21:40:28
#61 Somebody (Achidutzu) 1084 (16767) 2021-02-24 14:00:17
#62 Michael (FoM) 1084 (57794) 2021-04-16 00:18:03
#63 Antares (Antares) 1083 (32880) 2021-07-18 05:01:14
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   +++    [11:38 - 16.09.2021] silva solved the Level II challenge 'Keyshanc — Part 2'    +++    [05:06 - 16.09.2021] gilotyna solved the Level I challenge 'Number Sequence — Part 2'    +++    [04:58 - 16.09.2021] gilotyna solved the Level I challenge 'Original Caesar Cipher'    +++    [04:49 - 16.09.2021] gilotyna solved the Level I challenge 'Number Sequence'    +++    [23:56 - 15.09.2021] theghost2 solved the Level I challenge 'Original Caesar Cipher'    +++