MysteryTwister C3
NUMBER OF ACTIVE MEMBERS:

9763
Follow us: Facebook Twitter
 
 

Four levels

Four levels of increasing difficulty: From pen & paper to complex mathematical problems.

Limited attempts

You have only a limited number of attempts to solve each challenge. Be certain of your answer before you submit it.

Be fast

Be fast and earn a place on the Hall of Fame. The first four to solve each challenge will be displayed permanently.

Special Level X

The special level X contains cryptographic problems which are currently not known to have been solved.



Cipher challenges on four levels

 

Level I crypto challenges

Level I Challenges - Pen & Paper

Level I challenges are similar to crossword puzzles from newspapers and can be solved with little cryptographic background. You might not even need a computer for solving level I challenges — all you need is a bit of clever thinking and probably a pen and paper. A program like CrypTool applied to a level I challenge can help reveal the answer within minutes or even seconds, if the necessary algorithms are already built in. Hence, if you are new to cryptography, but nonetheless interested in the mysterious topic of cryptanalysis, give the level I challenges a try. You will almost assuredly meet quickly with success.
 
Level II crypto challenges

Level II Challenges - Programming skills required

Level II challenges require some background knowledge in cryptology and usually some computational power. Additionally, you may require tools that are not available in such convenient packages like CrypTool, OpenSSL or Sage. Therefore, you must first thoroughly understand the problem in order to write a computer program, which helps you getting along. It could take hours or even days to solve a level II challenge. Hence, if you consider yourself well-armed with cryptologic knowledge (such as if you are a university student in a cryptographic course), give the level II challenges a try. Success may not come easily, but it will be a worthwhile endeavor.
 
Level III crypto challenges

Level III Challenges - Extensive computing power recommended

Level III challenges require a thorough background in cryptanalysis and usually significant computational power as well. The problems in this level represent current research topics that are believed to be very difficult to solve. Thus, practical solutions may not even exist and ready-to-run tools almost certainly do not. The methodology to solve some of these challenges may already be known, but it may require such a huge amount of computational power that only a large group of people working together in a distributed system could obtain the solution. Challenges in this category mark the thin line between algorithms that are still secure and those that are not. Solving them may take weeks or even several months. Hence, challenges in this level are intended for entire research groups with many experts in cryptanalysis, programming, and distributed systems. Success cannot be guaranteed, but if you are the first to successfully solve one of these challenges, it probably would catch the attention of the scientific community. Of course, it still remains up to you to publish or present any such scientific techniques and results.
 
Level X crypto challenges

Level X Challenges - Unsolved ciphers

Most level X challenges contain problems that have remained unsolved for a long time. The fact that they have been unsolved regardless of numerous attempts suggests these challenges being hard. However, a simple idea can probably reduce the difficulty of it to a simple level I challenge — currently it is just unknown if and how they can be solved. Of course such a challenge cannot be solved with a simple codeword, since even we (the respective author and the MTC3 team) do not know the solution (the plaintext, the original message or the approach). So if you discover a promising solution you should either contact the author or the MTC3 team. Furthermore, you can publish your findings in a scientific journal such as Cryptologia or Journal of Cryptology.

 

Additionally, you may require tools that are not available in a convenient package like CrypTool.


All Challenges (291)

Ordered by date posted, the most recent appear first.

Enigma Part 2

[stamp-05] - 75 users already solved this challenge, 2 are working on it.
 
 
 

Decrypt the given ciphertext which is encrypted with the Enigma chiper. The key conists of the configuration of the stecker and the initial setting of the three rotors. Please give the letters in the key as capital letters.
Read more...

Click here to get to the corresponding forum topic to share your opinion.
Click here to download the challenge.
Click here to download the additional file of the challenge.

Author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published on: 2010-10-14 13:30
Maximum number of attempts for this challenge: 15

All successful users of this challenge

Rank User (#75) Achieved points (Global score) y-m-d - h:m:s

Ralf Stephan (rwst) 1485 (25229) 2010-10-23 17:30:54
Thomas Schmucker (dg) 1469 (26066) 2010-10-24 20:18:22
Siggi Bartz (sbartz) 1469 (2892) 2010-10-25 12:12:59
Nabb (Nabb) 1423 (13670) 2010-10-28 14:30:50
#5 Roadrunner (rr) 1414 (12702) 2010-10-29 21:05:52
#6 TURINGBOMBE (TBREAKER) 1378 (10616) 2010-11-03 13:19:56
#7 Armin Krauss (argh) 1307 (185115) 2010-11-22 21:09:21
#8 David (aki321) 1224 (27482) 2011-02-01 13:33:14
#9 Thomas Gonda (TomG) 1202 (36291) 2011-03-20 10:11:48
#10 kyprizel (kyprizel) 1188 (20795) 2011-04-30 13:57:01
#11 J. M. (jomandi) 1174 (113270) 2011-06-29 23:51:04
#12 Seth Kintigh (DarkFibre) 1169 (79471) 2011-07-26 18:22:34
#13 Daniel Fretwell (fretty) 1167 (30107) 2011-08-09 19:18:01
#14 Peter Mustermann (Gummiboot) 1166 (60285) 2011-08-12 23:31:02
#15 Viktor (Veselovský) 1163 (151602) 2011-09-01 13:22:28
#16 Tom Tox (tox) 1146 (17708) 2012-02-02 20:11:42
#17 Kurt Gebauer (Yokozuna) 1140 (175433) 2012-04-07 17:10:18
#18 Thomas Lambert (lambert) 1140 (35237) 2012-04-07 19:06:49
#19 Michel Van Caneghem (vancan) 1139 (49719) 2012-04-29 15:00:09
#20 Luigi Tomelli (archstanton) 1137 (108345) 2012-05-23 22:52:08
#21 Dusan (xxdradus) 1137 (40236) 2012-06-01 10:07:04
#22 Bart den Hartog (Bart13) 1134 (139176) 2012-07-12 03:20:32
#23 Nikki Brandt (nikki) 1123 (2348) 2013-03-12 10:40:10
#24 George (Theofanidis) 1122 (109124) 2013-04-04 20:40:22
#25 RPH (derichard) 1122 (27044) 2013-04-04 23:39:51
#26 Los (Gurt) 1121 (2742) 2013-04-27 11:33:50
#27 E.T (Ertheb) 1120 (81809) 2013-05-23 21:04:28
#28 Almut (problelmo) 1118 (45992) 2013-07-12 19:59:20
#29 George Lasry (george4096) 1118 (299488) 2013-07-16 21:30:48
#30 chris_3stones (3stones) 1117 (37759) 2013-08-03 10:50:47
#31 zahir mohsen moradi (ariobarzan) 1117 (99757) 2013-08-25 16:15:21
#32 Em Doulgerakis (Greko) 1115 (124033) 2013-10-13 11:50:41
#33 Forrest Gump (Polyphem) 1115 (38763) 2013-11-02 01:14:37
#34 YOUNG (LEE) 1115 (1115) 2013-11-07 18:13:44
#35 Francisco Moraes (fmoraes) 1114 (90044) 2013-11-12 22:16:31
#36 Michael Möller (michaelm) 1114 (175129) 2013-11-27 20:29:11
#37 Norbert Paefgen (egebamyasi) 1114 (2728) 2013-11-27 21:08:05
#38 Jim Gillogly (Scryer) 1114 (21260) 2013-12-05 05:18:59
#39 Alain (Integral) 1113 (207924) 2014-01-13 15:11:36
#40 Snake (snk) 1109 (79889) 2014-06-06 12:50:29
#41 Bernhard Gruber (bgr) 1108 (22889) 2014-08-04 10:09:06
#42 julius gaius (julius) 1107 (25581) 2014-08-23 21:58:25
#43 Robert (rm) 1107 (56475) 2014-09-19 13:14:43
#44 jej (stationz) 1106 (4939) 2014-11-08 22:33:42
#45 Julia Bernotat (El Greco ) 1106 (81129) 2014-11-21 13:07:45
#46 Kai Ludwig (TalentRaspel) 1105 (15704) 2015-01-18 00:21:11
#47 Georgius Stolte (HazmatsFear) 1104 (15671) 2015-02-19 18:14:58
#48 Rainer Zufall (kiekuk) 1104 (56786) 2015-02-26 19:33:01
#49 S Combes (jerva) 1104 (99132) 2015-02-27 14:25:46
#50 Hans Joachim Girulat (joregi) 1103 (36279) 2015-04-10 01:34:51
#51 Karl Schutt (günter) 1103 (41550) 2015-04-11 14:03:05
#52 Michael Ammon (Ammonym) 1102 (7719) 2015-06-10 20:23:37
#53 KW (qwer*) 1100 (13963) 2015-09-14 19:26:29
#54 Claude Vaillancourt (Cl3v3r) 1100 (38351) 2015-10-05 17:40:02
#55 J-L Morel (Rossignol) 1100 (29425) 2015-10-17 16:23:53
#56 Alain Collignon (vexilla72) 1099 (87833) 2016-01-12 11:01:30
#57 Szabó Zoltán (szabo.z87) 1099 (55604) 2016-01-22 19:42:46
#58 Andreas Frerichs (Ossili) 1098 (33266) 2016-02-08 23:28:13
#59 Marco Manfredi (mkk9901) 1098 (17686) 2016-03-26 12:03:26
#60 Erik (Erox) 1097 (26141) 2016-04-17 16:56:11
#61 Norbert Biermann (Norbert) 1096 (45031) 2016-08-23 20:39:58
#62 Mirko Rendey (Biork) 1095 (6595) 2016-09-20 13:03:31
#63 HeinzelMann (Ohm) 1095 (5295) 2016-09-20 21:19:00
#64 Nicolas (nicosPavlov) 1095 (151166) 2016-10-16 11:47:54
#65 Rene (ion) 1094 (5617) 2017-02-02 20:37:54
#66 chris (c2) 1093 (51973) 2017-03-24 09:02:46
#67 Dominik M. (Sgt. Pepper) 1093 (97919) 2017-04-04 17:43:20
#68 Daniel Walder (ibex) 1093 (14372) 2017-05-06 01:17:48
#69 Mir Dim (mir0soft) 1093 (72404) 2017-05-08 21:50:52
#70 D3d4lu5 (D3d4lu5) 1092 (295709) 2017-07-05 01:32:47
#71 Random Dude (rnd) 1088 (90929) 2018-08-29 00:54:41
#72 Nofre Tete (noffi) 1087 (21921) 2019-01-08 01:07:50
#73 Michael (FoM) 1087 (38953) 2019-01-25 20:53:16
#74 Mike (RogueRamblers) 1087 (26411) 2019-03-16 02:47:41
#75 Eugene (lim0n) 1086 (47187) 2019-07-05 13:36:31
You must be logged in to solve the challenge


Brute-Force-Attack on Triple-DES with Reduced Key Space

[shoellhammer-01] - 161 users already solved this challenge, 3 are working on it.
 
 
 

In present-days knowledge Triple-DES is secure if a really random key is used. If the key is not random and a part of the key may be guessed, it is possible to get knowledge of the rest of the key with a feasible bruteforce attack.
Read more...

Click here to get to the corresponding forum topic to share your opinion.
Click here to download the challenge.
Click here to download the additional file of the challenge.

Author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published on: 2010-10-14 13:30
Maximum number of attempts for this challenge: 5

All successful users of this challenge

Rank User (#161) Achieved points (Global score) y-m-d - h:m:s

v n (focus) 2000 (3510) 2010-10-15 03:15:10
kyprizel (kyprizel) 1725 (20795) 2010-10-16 20:24:47
Nabb (Nabb) 1660 (13670) 2010-10-18 07:48:43
Benjamin Jemlich (pcgod) 1613 (1858) 2010-10-18 15:06:44
#5 Mathias Herrmann (mazze) 1613 (3302) 2010-10-19 11:35:23
#6 Simon Jakob (simon.jakob) 1613 (18714) 2010-10-19 13:28:52
#7 Roadrunner (rr) 1576 (12702) 2010-10-19 18:10:07
#8 Thomas Schmucker (dg) 1576 (26066) 2010-10-19 20:41:42
#9 Ralf Stephan (rwst) 1547 (25229) 2010-10-20 19:07:42
#10 Sebastian Steinmann (teodoc) 1547 (5594) 2010-10-20 20:36:24
#11 un known (unknown) 1547 (5466) 2010-10-20 23:57:52
#12 Nobody (nobody) 1523 (40618) 2010-10-21 20:08:23
#13 Thomas Lambert (lambert) 1502 (35237) 2010-10-23 11:47:19
#14 Dennis Walter (Lotus) 1423 (6827) 2010-10-29 10:18:27
#15 Armin Krauss (argh) 1378 (185115) 2010-11-03 18:07:04
#16 Thomas Gonda (TomG) 1278 (36291) 2010-12-07 22:34:54
#17 mischa (mmisc) 1229 (22426) 2011-01-24 20:28:03
#18 Wolfgang Weisser (wowmyst) 1228 (33108) 2011-01-26 01:32:34
#19 David (aki321) 1222 (27482) 2011-02-04 09:29:05
#20 Jay Bee (jaybee) 1218 (1926) 2011-02-11 18:17:43
#21 Alan Dixon (NickBourbaki) 1212 (7761) 2011-02-22 13:54:58
#22 Fabian Bendun (benfa) 1211 (8697) 2011-02-26 11:35:34
#23 Roland Jansen (roland) 1187 (17607) 2011-05-04 10:29:50
#24 Peter Mustermann (Gummiboot) 1171 (60285) 2011-07-16 18:46:36
#25 Christian Inci (ch100) 1170 (9253) 2011-07-20 04:50:30
#26 J. M. (jomandi) 1170 (113270) 2011-07-20 17:48:49
#27 Robbt Neid (Das Tupel) 1169 (9403) 2011-07-27 02:08:45
#28 asdf1 asdf1 (asdf1) 1169 (1270) 2011-07-27 22:44:48
#29 Seth Kintigh (DarkFibre) 1169 (79471) 2011-07-28 06:26:00
#30 dbuq (dbuq) 1166 (22762) 2011-08-13 17:52:59
#31 Dano (Dano) 1165 (14610) 2011-08-21 00:49:50
#32 Nicolas Golubovic (qll) 1164 (14919) 2011-08-22 15:40:28
#33 h3po (h3po) 1164 (20433) 2011-08-22 15:58:12
#34 Daniel Fretwell (fretty) 1164 (30107) 2011-08-25 00:50:52
#35 Viktor (Veselovský) 1162 (151602) 2011-09-09 18:07:56
#36 Flip (Flip) 1162 (31107) 2011-09-09 21:17:25
#37 The Killer (Killer) 1159 (42393) 2011-10-02 13:59:44
#38 TURINGBOMBE (TBREAKER) 1157 (10616) 2011-10-16 19:50:28
#39 DirkS (Dustman) 1156 (8479) 2011-10-24 14:01:15
#40 Christian Matt (Luy) 1156 (9889) 2011-10-25 00:42:18
#41 Bart den Hartog (Bart13) 1152 (139176) 2011-11-27 21:31:38
#42 Keith Randall (randall77) 1151 (31011) 2011-12-06 23:47:48
#43 Hans Peter (hanspeter) 1145 (52256) 2012-02-16 00:00:30
#44 Luigi Tomelli (archstanton) 1142 (108345) 2012-03-15 13:39:06
#45 Fabian Hemmer (llan) 1142 (7842) 2012-03-24 01:46:01
#46 Jared (everkite) 1141 (1141) 2012-04-05 05:48:36
#47 Kurt Gebauer (Yokozuna) 1140 (175433) 2012-04-13 21:12:40
#48 Michel Van Caneghem (vancan) 1140 (49719) 2012-04-14 08:49:27
#49 Daniel Demmler (dd23) 1139 (8942) 2012-04-29 15:12:16
#50 Dusan (xxdradus) 1137 (40236) 2012-05-28 15:11:21
#51 Daniel Richter (TheHiveMind) 1136 (11147) 2012-06-17 00:07:37
#52 Jens (Norge) 1135 (3579) 2012-07-05 17:33:28
#53 Em Doulgerakis (Greko) 1133 (124033) 2012-07-28 10:36:03
#54 George (Theofanidis) 1133 (109124) 2012-07-29 18:07:28
#55 H. Lautenschlager (helmi) 1133 (32947) 2012-08-01 00:20:59
#56 chris_3stones (3stones) 1133 (37759) 2012-08-03 21:03:35
#57 Christopher Thiele (Deep-Sea) 1132 (2776) 2012-08-14 13:45:05
#58 RPH (derichard) 1130 (27044) 2012-09-18 01:30:59
#59 Stepan (m1sterx) 1129 (19165) 2012-10-10 18:42:17
#60 The Enigma (enigma) 1128 (14336) 2012-11-12 15:46:04
#61 E.T (Ertheb) 1128 (81809) 2012-11-12 19:17:02
#62 Wendell Echaluse (wendell) 1128 (1128) 2012-11-14 06:52:13
#63 zahir mohsen moradi (ariobarzan) 1118 (99757) 2013-07-06 17:07:59
#64 Philipp Hammer-Pohlau (phase2) 1118 (17981) 2013-07-24 10:38:41
#65 Almut (problelmo) 1118 (45992) 2013-07-30 22:42:10
#66 Forrest Gump (Polyphem) 1117 (38763) 2013-08-26 19:21:37
#67 Steve (Samacian) 1116 (23804) 2013-09-09 02:17:03
#68 Hank (hanky) 1116 (22859) 2013-09-26 00:42:03
#69 Gergely Simon (george314) 1116 (16555) 2013-09-28 16:10:52
#70 Alexander (cruachan) 1115 (16051) 2013-10-05 03:44:34
#71 Boris (Kaasu) 1115 (16566) 2013-10-25 15:33:08
#72 Jim Gillogly (Scryer) 1114 (21260) 2013-12-05 00:56:53
#73 George Lasry (george4096) 1114 (299488) 2013-12-10 03:47:46
#74 Francisco Moraes (fmoraes) 1114 (90044) 2013-12-10 18:41:40
#75 Nils (NiKo) 1113 (5055) 2013-12-19 14:46:39
#76 Brad (braddrew) 1113 (15878) 2013-12-24 08:33:05
#77 Alain (Integral) 1113 (207924) 2013-12-29 16:44:52
#78 Kim H. S. (tenchijin) 1112 (25468) 2014-01-30 08:34:10
#79 Pavel (haw) 1112 (22728) 2014-02-10 11:08:33
#80 Jacek (sawior) 1111 (3619) 2014-03-14 10:53:44
#81 masam (jimboo) 1111 (18687) 2014-03-29 21:57:34
#82 qaz (wsx) 1111 (1111) 2014-04-03 15:39:54
#83 caesar ([caesar]) 1111 (10738) 2014-04-03 15:40:48
#84 Karl Schutt (günter) 1110 (41550) 2014-04-28 00:30:35
#85 Snake (snk) 1109 (79889) 2014-05-27 08:36:39
#86 Javantea (Javantea) 1108 (40816) 2014-07-23 02:48:58
#87 julius gaius (julius) 1108 (25581) 2014-07-25 09:50:05
#88 Peter (51dc30ddc) 1108 (10916) 2014-07-26 21:35:12
#89 Robert (rm) 1108 (56475) 2014-07-31 23:11:43
#90 Tiloan (Tiloan) 1107 (3840) 2014-08-26 21:19:59
#91 Flo (sealth) 1107 (13472) 2014-09-06 15:15:48
#92 Jan (Keiken) 1106 (2717) 2014-10-10 01:12:37
#93 Julia Bernotat (El Greco ) 1105 (81129) 2014-12-17 19:31:02
#94 Kai Ludwig (TalentRaspel) 1105 (15704) 2015-01-15 18:13:20
#95 HolgerK (HolgerK) 1104 (25776) 2015-01-24 14:19:31
#96 Claude Vaillancourt (Cl3v3r) 1104 (38351) 2015-01-27 01:19:42
#97 S Combes (jerva) 1104 (99132) 2015-02-28 13:40:27
#98 Konstantin Golovan (SoulShaker) 1104 (14091) 2015-03-08 12:29:26
#99 Jie Chen (vmd) 1104 (3336) 2015-03-13 05:30:12
#100 lihao (gelihao609) 1103 (3335) 2015-03-17 23:39:55
#101 Rainer Zufall (kiekuk) 1103 (56786) 2015-04-07 22:18:11
#102 Erik (Erox) 1101 (26141) 2015-08-02 21:54:04
#103 J-L Morel (Rossignol) 1100 (29425) 2015-10-07 15:59:46
#104 Rainer (Rainer74) 1099 (8417) 2015-12-22 19:59:06
#105 Dominik M. (Sgt. Pepper) 1098 (97919) 2016-03-09 15:44:46
#106 Marco Manfredi (mkk9901) 1098 (17686) 2016-03-20 15:06:40
#107 Norbert Biermann (Norbert) 1096 (45031) 2016-08-01 20:50:45
#108 neko (neko) 1095 (7679) 2016-09-24 03:41:10
#109 ender (endered) 1095 (5478) 2016-09-27 03:37:10
#110 Nicolas (nicosPavlov) 1095 (151166) 2016-10-08 06:18:42
#111 Alain Collignon (vexilla72) 1095 (87833) 2016-10-08 13:14:46
#112 Martin (martinbucher) 1095 (27363) 2016-11-13 16:49:33
#113 Andreas Frerichs (Ossili) 1094 (33266) 2017-01-10 16:52:41
#114 Georgius Stolte (HazmatsFear) 1094 (15671) 2017-01-13 20:31:57
#115 Marcel (bene1512) 1094 (20896) 2017-01-15 21:43:20
#116 Tristan1473 (Tristan1473) 1094 (18914) 2017-02-19 09:20:58
#117 Jochen Girulat (pyjoregi) 1094 (1094) 2017-03-06 22:34:23
#118 Hans Joachim Girulat (joregi) 1093 (36279) 2017-03-08 13:59:07
#119 Mir Dim (mir0soft) 1093 (72404) 2017-03-14 19:47:05
#120 chris (c2) 1093 (51973) 2017-03-26 17:48:17
#121 D3d4lu5 (D3d4lu5) 1092 (295709) 2017-06-23 14:09:05
#122 Kasia (kasia-tutej) 1092 (53366) 2017-06-25 21:32:50
#123 Tr0y (Tr0y) 1091 (3280) 2017-09-30 07:54:35
#124 Elpsycongroo (Elpsycongroo) 1091 (3280) 2017-10-08 09:51:50
#125 Caligo (caligo) 1091 (3280) 2017-10-09 12:48:06
#126 sdmncjkxcnjncsl (a363135) 1091 (3280) 2017-10-09 13:26:29
#127 denverb (DenverB) 1091 (1091) 2017-10-09 13:50:41
#128 xL (satom1) 1091 (2184) 2017-10-09 15:52:59
#129 wang5 (1phan) 1091 (3280) 2017-10-09 17:00:01
#130 Xiao_Xin (Xiao_Xin) 1091 (3280) 2017-10-13 16:08:18
#131 Mihail (plexor) 1090 (16827) 2018-02-06 20:25:07
#132 roehm (roehm) 1089 (5399) 2018-05-20 11:52:25
#133 wff1315 (wff) 1089 (1789) 2018-07-06 05:47:39
#134 panqi (pq) 1089 (1889) 2018-07-06 05:57:32
#135 E41514015 (E41514015) 1089 (2985) 2018-07-06 05:58:05
#136 E41514013 (E41514013) 1089 (4167) 2018-07-06 05:59:00
#137 E41514023 (E41514023) 1089 (3967) 2018-07-06 06:07:18
#138 E41514019 (E41514019) 1089 (2885) 2018-07-06 07:35:32
#139 E41514006 (E41514006) 1089 (4957) 2018-07-06 08:29:47
#140 Richi (Richi) 1089 (2385) 2018-07-06 08:40:22
#141 LQL (E41514067) 1089 (3180) 2018-07-06 10:10:12
#142 Random Dude (rnd) 1088 (90929) 2018-08-19 22:41:01
#143 Manfred Paul (manf) 1088 (14774) 2018-11-14 17:17:19
#144 Michael (FoM) 1087 (38953) 2019-01-25 00:13:56
#145 LoneWolf219 (LoneWolf219) 1087 (12795) 2019-03-09 22:38:17
#146 E41614048 (E41614048) 1087 (4063) 2019-03-23 15:31:56
#147 E41614056 (E41614056) 1087 (4062) 2019-03-25 12:18:57
#148 E41614043 (E41614043) 1087 (2780) 2019-03-26 14:12:08
#149 E41614031 (E41614031) 1087 (7526) 2019-03-27 16:45:33
#150 E41614019 (E41614019) 1087 (3075) 2019-03-27 17:42:46
#151 Tom GS (gousheng) 1087 (4368) 2019-03-27 17:47:31
#152 E41614014 (E41614014) 1087 (2875) 2019-03-28 02:14:36
#153 E41614018 (E41614018) 1087 (6243) 2019-03-28 05:41:10
#154 E41614005 (E41614005) 1087 (3175) 2019-03-29 08:15:50
#155 Klaus (kumaus) 1087 (21415) 2019-04-03 18:31:50
#156 ENOENT (ENOENT) 1086 (13478) 2019-06-02 10:02:54
#157 An Viet Pham (S1lv3r) 1086 (7927) 2019-06-07 11:08:13
#158 Mike (RogueRamblers) 1086 (26411) 2019-06-07 20:35:31
#159 Eugene (lim0n) 1086 (47187) 2019-07-11 14:23:49
#160 yult (yult) 1086 (12185) 2019-07-14 05:18:26
#161 ajg (ludimus) 1086 (11914) 2019-08-03 15:13:09
You must be logged in to solve the challenge


Sigaba Part 1

[stamp-07] - 12 users already solved this challenge, 1 is working on it.
 
 
 

The encryption with the Sigaba machine was the American counterpart to the German Enigma. But due to the much larger key space of the Sigaba, even today, it is only feasible to break the code if parts of the key are known. This is what this challenge is about.
Read more...

Click here to get to the corresponding forum topic to share your opinion.
Click here to download the challenge.
Click here to download the additional file of the challenge.

Author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published on: 2010-10-14 13:30
Maximum number of attempts for this challenge: 8

All successful users of this challenge

Rank User (#12) Achieved points (Global score) y-m-d - h:m:s

DirkS (Dustman) 1265 (8479) 2010-12-16 12:47:52
J. M. (jomandi) 1159 (113270) 2011-10-02 19:55:00
Luigi Tomelli (archstanton) 1117 (108345) 2013-08-26 12:14:11
Francisco Moraes (fmoraes) 1113 (90044) 2013-12-21 12:33:37
#5 Alain (Integral) 1112 (207924) 2014-02-27 22:00:07
#6 Kurt Gebauer (Yokozuna) 1109 (175433) 2014-05-27 00:23:06
#7 S Combes (jerva) 1103 (99132) 2015-04-10 11:18:30
#8 Armin Krauss (argh) 1100 (185115) 2015-10-14 13:58:05
#9 zahir mohsen moradi (ariobarzan) 1096 (99757) 2016-07-02 19:47:21
#10 Nicolas (nicosPavlov) 1094 (151166) 2016-12-18 01:40:06
#11 George Lasry (george4096) 1093 (299488) 2017-06-06 23:14:10
#12 D3d4lu5 (D3d4lu5) 1088 (295709) 2018-08-26 13:40:54
You must be logged in to solve the challenge


ORYX Stream Cipher Part II

[stamp-02] - 44 users already solved this challenge, 3 are working on it.
 
 
 

The ORYX stream cipher consists of three 32-bit LFSRs X, A, B which are shifted differently depending on some bits in the LFSR X. The key stream is a combination of the highest 8 bits of each of the three LFSRs. It is neither feasible nor necessary to search the whole 96-bit key space, there are more efficient methods!

Hint: Enter the codeword in hex with non-capital letters and a leading zero.
Read more...

Click here to get to the corresponding forum topic to share your opinion.
Click here to download the challenge.
Click here to download the additional file of the challenge.

Author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published on: 2010-10-14 13:30
Maximum number of attempts for this challenge: 20

All successful users of this challenge

Rank User (#44) Achieved points (Global score) y-m-d - h:m:s

Nabb (Nabb) 1660 (13670) 2010-10-18 12:47:49
un known (unknown) 1547 (5466) 2010-10-20 22:49:54
Joachim Protze (joschi) 1523 (4877) 2010-10-21 14:54:25
Armin Krauss (argh) 1353 (185115) 2010-11-08 14:54:26
#5 Thomas Gonda (TomG) 1235 (36291) 2011-01-16 11:55:46
#6 Wolfgang Weisser (wowmyst) 1215 (33108) 2011-02-16 23:30:50
#7 J. M. (jomandi) 1168 (113270) 2011-08-03 19:17:18
#8 Viktor (Veselovský) 1163 (151602) 2011-08-30 02:58:06
#9 Seth Kintigh (DarkFibre) 1163 (79471) 2011-09-04 08:05:16
#10 Flip (Flip) 1161 (31107) 2011-09-14 10:32:16
#11 Jan Temme (JaT3) 1150 (11694) 2011-12-18 20:39:31
#12 Nobody (nobody) 1150 (40618) 2011-12-20 16:04:06
#13 Bart den Hartog (Bart13) 1144 (139176) 2012-02-25 05:40:54
#14 Kurt Gebauer (Yokozuna) 1139 (175433) 2012-04-28 12:41:41
#15 Fabian Hemmer (llan) 1126 (7842) 2012-12-12 21:01:37
#16 Tron (Tron) 1126 (7381) 2012-12-21 23:17:18
#17 Hans Peter (hanspeter) 1125 (52256) 2013-01-20 02:16:27
#18 George (Theofanidis) 1123 (109124) 2013-03-12 00:17:58
#19 sukanya thakur (sthakur) 1122 (2244) 2013-03-22 23:09:29
#20 Luigi Tomelli (archstanton) 1120 (108345) 2013-05-31 12:51:45
#21 zahir mohsen moradi (ariobarzan) 1118 (99757) 2013-07-06 16:58:18
#22 Em Doulgerakis (Greko) 1118 (124033) 2013-07-09 14:44:56
#23 Forrest Gump (Polyphem) 1114 (38763) 2013-11-15 00:49:01
#24 Francisco Moraes (fmoraes) 1114 (90044) 2013-11-27 18:44:56
#25 Alain (Integral) 1113 (207924) 2014-01-19 10:33:36
#26 S Combes (jerva) 1104 (99132) 2015-01-24 13:53:58
#27 Claude Vaillancourt (Cl3v3r) 1104 (38351) 2015-03-02 16:16:57
#28 E.T (Ertheb) 1102 (81809) 2015-06-23 21:07:09
#29 Javantea (Javantea) 1101 (40816) 2015-09-10 20:38:45
#30 Martin Härterich (HaeM) 1100 (15149) 2015-10-04 12:07:10
#31 Sean (Kavanaugh) 1099 (29143) 2015-12-05 23:37:14
#32 Alain Collignon (vexilla72) 1099 (87833) 2015-12-13 10:14:49
#33 Julia Bernotat (El Greco ) 1099 (81129) 2016-01-03 15:54:10
#34 Karl Schutt (günter) 1098 (41550) 2016-03-19 18:49:03
#35 Robert (rm) 1097 (56475) 2016-04-20 15:36:24
#36 Rider (alrider) 1096 (7214) 2016-09-01 22:14:21
#37 Nicolas (nicosPavlov) 1095 (151166) 2016-11-01 13:24:34
#38 Kasia (kasia-tutej) 1092 (53366) 2017-06-22 13:42:41
#39 George Lasry (george4096) 1092 (299488) 2017-06-24 22:45:21
#40 D3d4lu5 (D3d4lu5) 1092 (295709) 2017-06-27 17:20:22
#41 Random Dude (rnd) 1088 (90929) 2018-09-14 01:06:06
#42 Michael (FoM) 1087 (38953) 2019-02-15 18:09:54
#43 Klaus (kumaus) 1087 (21415) 2019-04-12 17:31:41
#44 Eugene (lim0n) 1086 (47187) 2019-08-05 16:00:50
You must be logged in to solve the challenge


ORYX Stream Cipher Part I

[stamp-01] - 76 users already solved this challenge, 8 are working on it.
 
 
 

The ORYX stream cipher consists of three 32-bit LFSRs X, A, B which are shifted differently depending on some bits in the LFSR X. The key stream is a combination of the highest 8 bits of each of the three LFSRs. It is neither feasible nor necessary to search the whole 96-bit key space, there are more efficient methods!

Hint: Enter the codeword in hex with non-capital letters.
Read more...

Click here to get to the corresponding forum topic to share your opinion.
Click here to download the challenge.
Click here to download the additional file of the challenge.

Author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published on: 2010-10-14 13:30
Maximum number of attempts for this challenge: 20

All successful users of this challenge

Rank User (#76) Achieved points (Global score) y-m-d - h:m:s

Nabb (Nabb) 1660 (13670) 2010-10-18 11:50:55
un known (unknown) 1576 (5466) 2010-10-20 00:14:52
Joachim Protze (joschi) 1547 (4877) 2010-10-21 12:55:53
Armin Krauss (argh) 1367 (185115) 2010-11-05 23:22:19
#5 Thomas Gonda (TomG) 1236 (36291) 2011-01-14 20:39:40
#6 Nobody (nobody) 1231 (40618) 2011-01-21 17:39:53
#7 Wolfgang Weisser (wowmyst) 1215 (33108) 2011-02-16 22:20:24
#8 Pramathesh (pramathesh5) 1200 (1200) 2011-03-24 03:29:46
#9 Foram (Patel) 1200 (1200) 2011-03-24 03:33:11
#10 kyprizel (kyprizel) 1188 (20795) 2011-05-01 18:17:20
#11 J. M. (jomandi) 1168 (113270) 2011-08-03 18:40:30
#12 Viktor (Veselovský) 1165 (151602) 2011-08-21 00:03:44
#13 Daniel Fretwell (fretty) 1165 (30107) 2011-08-22 00:54:26
#14 Seth Kintigh (DarkFibre) 1163 (79471) 2011-09-04 07:18:15
#15 Flip (Flip) 1162 (31107) 2011-09-10 16:59:44
#16 Anton Wendel (MoD) 1150 (5679) 2011-12-15 01:40:11
#17 unknown anonymous (s1op) 1150 (1150) 2011-12-16 00:46:38
#18 Friedrich Wiemer (asante) 1150 (5183) 2011-12-16 00:49:58
#19 Sk1w41k35 (Sk1w41k35) 1150 (1150) 2011-12-17 17:26:46
#20 Nicolas Golubovic (qll) 1150 (14919) 2011-12-18 12:58:28
#21 Jan Temme (JaT3) 1150 (11694) 2011-12-18 17:04:05
#22 h3po (h3po) 1150 (20433) 2011-12-18 21:28:01
#23 jacobian1729 (jacobian1729) 1144 (5584) 2012-02-16 17:44:54
#24 Bart den Hartog (Bart13) 1144 (139176) 2012-02-24 02:11:58
#25 Ashwin R (Ar) 1142 (1142) 2012-03-22 07:50:31
#26 Luigi Tomelli (archstanton) 1142 (108345) 2012-03-24 10:38:55
#27 Michel Van Caneghem (vancan) 1141 (49719) 2012-04-01 20:59:36
#28 Amit Balid (amitbalid) 1141 (1141) 2012-04-03 00:26:40
#29 Kurt Gebauer (Yokozuna) 1139 (175433) 2012-04-27 22:46:11
#30 Johannes T. (K2d) 1126 (1428) 2012-12-10 17:50:25
#31 David (pilz) 1126 (1126) 2012-12-11 23:41:57
#32 Fabian Hemmer (llan) 1126 (7842) 2012-12-12 20:17:13
#33 Bleh (bleh) 1126 (1126) 2012-12-17 01:57:44
#34 rokky rokksus (rokksus) 1126 (1126) 2012-12-17 02:15:15
#35 Tron (Tron) 1126 (7381) 2012-12-17 09:44:38
#36 Hans Peter (hanspeter) 1125 (52256) 2013-01-16 23:15:44
#37 George (Theofanidis) 1125 (109124) 2013-01-20 13:55:05
#38 Em Doulgerakis (Greko) 1123 (124033) 2013-02-16 21:28:26
#39 Michael Düll (akurei) 1123 (1123) 2013-02-27 17:32:12
#40 sukanya thakur (sthakur) 1122 (2244) 2013-03-22 23:01:45
#41 zahir mohsen moradi (ariobarzan) 1118 (99757) 2013-07-06 16:57:23
#42 Almut (problelmo) 1117 (45992) 2013-08-01 23:08:04
#43 Seth (cville) 1117 (1117) 2013-08-17 13:50:36
#44 chris_3stones (3stones) 1115 (37759) 2013-10-31 19:27:34
#45 Forrest Gump (Polyphem) 1114 (38763) 2013-11-09 02:32:23
#46 Deebiga Rajeswaran (deebiga) 1114 (1114) 2013-11-09 05:07:12
#47 aishwarya rastogi (aishwarya) 1114 (1114) 2013-11-09 05:18:51
#48 Francisco Moraes (fmoraes) 1114 (90044) 2013-11-26 15:34:47
#49 Alain (Integral) 1113 (207924) 2014-01-18 19:10:51
#50 Javantea (Javantea) 1109 (40816) 2014-05-24 19:40:23
#51 Robert (rm) 1106 (56475) 2014-11-25 21:14:44
#52 S Combes (jerva) 1104 (99132) 2015-01-20 21:32:49
#53 Claude Vaillancourt (Cl3v3r) 1104 (38351) 2015-03-01 23:18:47
#54 E.T (Ertheb) 1102 (81809) 2015-06-23 19:14:33
#55 Martin Härterich (HaeM) 1100 (15149) 2015-10-03 10:50:09
#56 Sean (Kavanaugh) 1099 (29143) 2015-12-05 23:39:32
#57 Alain Collignon (vexilla72) 1099 (87833) 2015-12-11 12:53:34
#58 Julia Bernotat (El Greco ) 1099 (81129) 2015-12-24 13:15:59
#59 Vikash (vikash72) 1098 (1098) 2016-03-19 07:20:02
#60 Karl Schutt (günter) 1098 (41550) 2016-03-19 15:49:34
#61 Swathi Nambiar (Swathi18) 1098 (1098) 2016-03-20 22:59:25
#62 Rider (alrider) 1096 (7214) 2016-08-30 21:11:36
#63 Nicolas (nicosPavlov) 1095 (151166) 2016-10-10 17:16:53
#64 digiter (digiter1) 1093 (2187) 2017-03-13 04:44:06
#65 bo (booooooooooooooo) 1093 (1193) 2017-03-13 07:17:23
#66 chris (c2) 1093 (51973) 2017-03-21 15:49:29
#67 Vasudha Venkatesh (vasu18) 1093 (2292) 2017-03-23 11:06:41
#68 Dominik M. (Sgt. Pepper) 1093 (97919) 2017-05-07 21:58:12
#69 Kasia (kasia-tutej) 1092 (53366) 2017-06-19 11:40:51
#70 George Lasry (george4096) 1092 (299488) 2017-06-24 21:53:23
#71 D3d4lu5 (D3d4lu5) 1092 (295709) 2017-06-27 17:18:26
#72 Random Dude (rnd) 1088 (90929) 2018-08-18 05:56:31
#73 Michael (FoM) 1087 (38953) 2019-02-14 12:35:19
#74 Klaus (kumaus) 1087 (21415) 2019-04-12 16:03:24
#75 Eugene (lim0n) 1086 (47187) 2019-08-04 15:58:05
You must be logged in to solve the challenge
 
 
powered by the CrypTool project  CrypTool

 

   +++    [00:59 - 24.08.2019] Bart13 solved the Level II challenge 'A Cloaked Substitution Cipher — Part 1'    +++    [22:06 - 23.08.2019] Stephje1978 solved the Level II challenge 'Hybrid Encryption I'    +++    [18:51 - 23.08.2019] Stephje1978 solved the Level II challenge 'Not-so-Secret Message from Malawi — Part I (RSA)'    +++    [18:24 - 23.08.2019] edulycan solved the Level I challenge 'Number Sequence — Part 8'    +++    [18:07 - 23.08.2019] edulycan solved the Level I challenge 'A hidden word'    +++