MysteryTwister C3
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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 (269)

Ordered by date posted, the most recent appear first.

Monoalphabetic Substitution

[esslinger-02] - 465 users already solved this challenge, 158 are working on it.
 
 
 

This is a famous speech of a German soccer star - including a mistake. The codeword consists of 2 words, one after the other with no space. The first is the password used to encrypt the plaintext, and the second is the mistake in the decrypted text. (The plaintext is in German.)
Read more...

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Click here to download 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 (#465) Achieved points (Global score) y-m-d - h:m:s

Nobody (nobody) 200 (40618) 2010-10-14 13:35:19
Simon Jakob (simon.jakob) 200 (18714) 2010-10-15 01:30:50
No you (lolwhat) 133 (2124) 2010-10-16 17:46:26
John Smith (donnie) 133 (266) 2010-10-16 20:05:16
#5 Oliver Peters (Avian) 133 (266) 2010-10-16 20:09:00
#6 Kasthelruther Spatz (m36) 133 (266) 2010-10-16 21:28:34
#7 Roadrunner (rr) 133 (12702) 2010-10-16 22:52:17
#8 whaite (whaite) 133 (266) 2010-10-16 23:06:53
#9 R H (BartS23) 133 (266) 2010-10-17 01:57:02
#10 Thomas Arend (Byggvir) 133 (266) 2010-10-17 02:49:46
#11 Andreas J. Bathe (ajb) 133 (266) 2010-10-17 07:11:31
#12 Thomas Hansen (norot) 133 (266) 2010-10-17 09:26:10
#13 Michael Ludwig (michaelll) 125 (258) 2010-10-17 13:37:08
#14 Claude Laveaux (claude.laveaux) 125 (14504) 2010-10-17 14:01:57
#15 Colin Benner (Colin) 125 (1413) 2010-10-17 15:03:08
#16 Christian Landvogt (bailli) 125 (250) 2010-10-17 15:33:31
#17 Marcus Eichmüller (Leus) 125 (258) 2010-10-17 17:38:10
#18 Ralf Stephan (rwst) 125 (22735) 2010-10-17 17:50:23
#19 Floyd Hopes (floydhopes) 125 (250) 2010-10-17 18:25:33
#20 a b (fabulous) 125 (250) 2010-10-17 20:36:36
#21 Stephan Gross (okura) 125 (351) 2010-10-17 22:26:19
#22 Daniel Demmler (dd) 125 (125) 2010-10-17 22:37:27
#23 Wonko the Sane (Wonko) 125 (250) 2010-10-18 01:39:50
#24 Thomas Gonda (TomG) 125 (36291) 2010-10-18 11:05:19
#25 Michael Schöller (swtrse) 125 (350) 2010-10-18 11:19:52
#26 J Br (j.br) 125 (3242) 2010-10-18 12:43:33
#27 Tom Erlang (ter85) 125 (1019) 2010-10-18 12:46:16
#28 Benjamin Jemlich (pcgod) 120 (1858) 2010-10-18 13:43:29
#29 Jan Kattelans (JanKat) 120 (245) 2010-10-18 13:45:38
#30 Ernst Müller (MysteriusM) 120 (120) 2010-10-18 14:51:55
#31 Michael Fischer (MichaelF) 120 (973) 2010-10-18 14:56:39
#32 Armin Hornetz (Calisan) 120 (245) 2010-10-18 15:02:57
#33 Johannes Krupp (nescio) 120 (245) 2010-10-18 15:24:00
#34 Ben H (benh) 120 (535) 2010-10-18 15:28:55
#35 Jascha Bohnet (DCore) 120 (245) 2010-10-18 15:39:49
#36 Christian Winkel (nordlichtHH) 120 (240) 2010-10-18 17:07:02
#37 David Penack (Qvist) 120 (348) 2010-10-18 17:23:15
#38 Arnold Sendler (Tschighor) 120 (1105) 2010-10-18 18:03:17
#39 Carsten Lenz (kAyCeE80) 120 (460) 2010-10-18 19:26:33
#40 Gilbert Schuster (gil) 120 (245) 2010-10-18 20:22:59
#41 Markus Barwig (Dipol) 120 (240) 2010-10-18 20:30:17
#42 Lam Er (xxlamexx) 120 (240) 2010-10-18 20:40:38
#43 futbol playa (futbolplaya) 120 (344) 2010-10-18 20:51:27
#44 pratipistor (pratipistor) 120 (245) 2010-10-18 21:37:46
#45 Axel Wagner (awag) 120 (240) 2010-10-18 21:41:57
#46 FUgaRU (FUgaRU) 120 (240) 2010-10-18 23:46:44
#47 Hermann Lorenz (gmorek) 120 (240) 2010-10-18 23:55:18
#48 Jan-Hendrik Schöler (mystjhs) 120 (240) 2010-10-19 01:19:54
#49 Sebastian Steinmann (teodoc) 120 (5594) 2010-10-19 02:08:06
#50 Timo Flöttmann (dancey) 120 (240) 2010-10-19 11:47:35
#51 dskajgheri eurzcn (dskajgheri) 120 (240) 2010-10-19 12:52:12
#52 Hans Wurst (LordShaggynator) 117 (242) 2010-10-19 14:00:05
#53 Mr Anonym (the_ettin) 117 (234) 2010-10-19 14:28:45
#54 Sven Hagemann (svehag) 117 (237) 2010-10-19 14:30:53
#55 Philipp Berger (ThE_-_BliZZarD) 117 (354) 2010-10-19 16:30:06
#56 Jascha Koch (yosh) 117 (2201) 2010-10-19 18:46:48
#57 Michael Grau (MiG) 117 (242) 2010-10-19 20:14:02
#58 Martin Schubert (scoob) 117 (351) 2010-10-20 09:12:53
#59 Joachim Protze (joschi) 114 (4877) 2010-10-20 14:04:40
#60 Anibal Kürekci (ak187) 114 (1076) 2010-10-20 23:52:13
#61 Sebastian Roekens (cyphos) 114 (228) 2010-10-21 10:45:17
#62 Mark Weber (mark93) 114 (247) 2010-10-21 11:53:47
#63 Michail Pokryschkin (micpok) 113 (766) 2010-10-22 10:13:39
#64 Dirk Werner (hudray) 111 (933) 2010-10-22 15:04:27
#65 Ansgar (Ansgar) 111 (236) 2010-10-22 16:21:58
#66 Thomas Mattel (Tom) 111 (2462) 2010-10-22 21:11:48
#67 Thomas Loddenkemper (loddi) 110 (243) 2010-10-23 18:49:11
#68 Grinse Katze (Grinsekatze) 109 (964) 2010-10-24 13:47:24
#69 Raistlin (Majere) 109 (352) 2010-10-24 22:18:53
#70 Removed (prodigy) 109 (109) 2010-10-24 23:06:46
#71 Matthias Rottmann (mr66) 109 (594) 2010-10-25 12:44:44
#72 Christoph Orth (orthy) 108 (108) 2010-10-25 15:36:18
#73 Christof Kleber (Loki) 108 (6051) 2010-10-25 17:07:56
#74 Hannes Kremmer (HannesKremmer) 108 (932) 2010-10-25 20:57:22
#75 H. Gregor Molter (cyberdeck) 108 (608) 2010-10-26 14:47:33
#76 Daniel Kovacic (vimix) 108 (336) 2010-10-26 20:58:00
#77 Jörg-Bernd Linnhoff (joberlin) 108 (661) 2010-10-27 12:32:55
#78 Stefan Kühne (subROUTINE) 107 (3595) 2010-10-27 14:37:03
#79 Dennis Heitmann (dennisheitmann) 107 (349) 2010-10-27 16:06:35
#80 Armin Krauss (argh) 107 (175390) 2010-10-27 23:44:13
#81 Martin Kreis (hollemann) 106 (323) 2010-10-29 23:01:34
#82 Markus Brehm (almarkus) 106 (216) 2010-10-30 16:48:02
#83 David (aki321) 105 (27482) 2010-11-01 13:32:35
#84 Gary Hawk (Highlander) 105 (631) 2010-11-03 09:21:15
#85 Bernd Freise (Xanhem) 104 (1154) 2010-11-06 00:13:30
#86 Stephan Schreiber (Zerberus) 104 (524) 2010-11-07 07:15:42
#87 Hans Schuell (hschuell) 104 (2194) 2010-11-07 17:53:58
#88 Carsten Baum (crashti) 104 (1135) 2010-11-08 11:10:46
#89 Ulrich Armbrüster (uarmbruester) 104 (7987) 2010-11-08 17:24:37
#90 Marion Haller (Mary-on) 104 (314) 2010-11-08 21:35:48
#91 Alexander Schneider (schnibbler) 104 (208) 2010-11-09 22:34:41
#92 D Döner (ac715) 104 (313) 2010-11-10 19:11:46
#93 Lars Beckmann (larsbeck) 103 (518) 2010-11-11 21:20:26
#94 Nils Achim Lacke (Babbage) 103 (618) 2010-11-13 14:23:32
#95 Michael Möller (michaelm) 102 (169404) 2010-12-01 21:50:28
#96 Max Mustermann (MustermM) 102 (6661) 2010-12-03 15:46:02
#97 Alex K. (yellowred) 102 (204) 2010-12-08 19:39:27
#98 Hans Rudolf (mutabor) 101 (3015) 2011-01-04 17:58:31
#99 ingo (ingo) 101 (712) 2011-01-04 20:52:42
#100 Wolfgang Weisser (wowmyst) 101 (33108) 2011-01-07 18:33:12
#101 Sebastian (seb) 101 (709) 2011-01-15 18:43:41
#102 Paula Olsen (paol) 101 (825) 2011-01-31 01:09:37
#103 Florian Rüchel (Javex) 101 (721) 2011-01-31 01:51:18
#104 Christine Welsch (krawallchrischtl) 101 (809) 2011-02-04 18:57:07
#105 Jay Bee (jaybee) 101 (1926) 2011-02-07 22:44:58
#106 Fabian Bendun (benfa) 101 (8697) 2011-02-24 21:59:07
#107 Hans Müller (hanschen) 101 (404) 2011-02-28 08:22:35
#108 Christian Nobel (Nobelix) 101 (503) 2011-03-18 12:43:00
#109 rho (rho) 101 (303) 2011-04-02 01:12:35
#110 j.h. (haegarq) 101 (15252) 2011-04-11 16:25:50
#111 Sepp Maier (smai) 101 (1898) 2011-04-17 02:33:28
#112 Case (Case) 101 (505) 2011-04-17 13:49:49
#113 Wombat (Wombat) 101 (5822) 2011-04-23 15:19:32
#114 Marcin Zawadzki (harry007) 101 (3012) 2011-04-29 21:18:23
#115 Egon Hamburger (Seehase) 101 (3445) 2011-05-01 16:16:25
#116 Marc Schmidbauer (BrotInGefahr) 100 (404) 2011-05-08 01:42:48
#117 Muendo (muendo) 100 (3501) 2011-05-08 08:28:15
#118 mad maxx (madmaxx) 100 (300) 2011-05-10 22:17:50
#119 Holti (Holti) 100 (6035) 2011-05-25 19:02:48
#120 thojocro@zehnminutenmail.de (thojocro@zehnminutenmail.) 100 (401) 2011-06-08 00:34:16
#121 Seth Kintigh (DarkFibre) 100 (79471) 2011-06-14 02:31:17
#122 The Killer (Killer) 100 (42393) 2011-06-17 20:41:59
#123 Maurice Parthier (bobthemaster) 100 (705) 2011-07-10 07:33:03
#124 Stefan Haas (stef_the_chef) 100 (4329) 2011-07-11 22:17:44
#125 Peter Mustermann (Gummiboot) 100 (60285) 2011-07-12 11:02:58
#126 Daniel Fretwell (fretty) 100 (30107) 2011-07-15 12:05:05
#127 J P (Cugu) 100 (513) 2011-07-19 22:13:36
#128 Robbt Neid (Das Tupel) 100 (9403) 2011-07-24 20:35:38
#129 Dano (Dano) 100 (14610) 2011-07-30 22:49:51
#130 dbuq (dbuq) 100 (22762) 2011-08-03 17:01:28
#131 Viktor (Veselovský) 100 (142053) 2011-08-12 20:57:52
#132 lbt (lbt) 100 (100) 2011-08-16 01:52:35
#133 Nicolas Golubovic (qll) 100 (14919) 2011-08-16 01:53:16
#134 Qinncade (Qinncade) 100 (2610) 2011-08-17 09:34:11
#135 h3po (h3po) 100 (20433) 2011-08-19 19:07:34
#136 Ph il (audioPhil) 100 (1935) 2011-08-22 23:42:41
#137 Lu Kas (DrunkenPanda) 100 (1835) 2011-08-22 23:43:07
#138 Horst Kevin (lordstege) 100 (1419) 2011-08-28 13:46:24
#139 J. M. (jomandi) 100 (113270) 2011-09-20 23:36:45
#140 Jay Kay (Merty) 100 (3726) 2011-09-25 14:39:46
#141 Anton Wendel (MoD) 100 (5679) 2011-09-28 20:14:29
#142 Gideon Knocke (0xff) 100 (601) 2011-10-13 23:58:41
#143 mister pinball (mister) 100 (200) 2011-10-15 08:09:04
#144 Christian Matt (Luy) 100 (9889) 2011-10-23 04:35:39
#145 Bart den Hartog (Bart13) 100 (118984) 2011-11-01 14:06:14
#146 Lassu Eger (Hun) (slowmouse) 100 (1118) 2011-11-27 12:47:48
#147 Dieter R (D0n Quix0rt) 100 (200) 2011-12-04 20:40:10
#148 Flo Geht_dich gar_nichts_an (flo) 100 (6271) 2011-12-11 02:01:47
#149 Michael Gürtler (michaelg) 100 (4128) 2011-12-15 16:57:35
#150 Nathan (Witten) 100 (25326) 2011-12-16 11:43:49
#151 Tom (kryptom05) 100 (100) 2011-12-27 15:12:42
#152 Matthias Schwarzkopf (MatzeAT) 100 (2967) 2012-01-03 15:09:53
#153 Sabrina Ryser (Sabse15) 100 (506) 2012-01-14 00:25:52
#154 Philipp Knapp (philipp312) 100 (3357) 2012-01-15 13:43:59
#155 Tom Tox (tox) 100 (17708) 2012-01-18 16:30:53
#156 astrid (nellli) 100 (500) 2012-01-31 14:20:08
#157 Michael Sommer (M1S) 100 (635) 2012-01-31 22:38:24
#158 Timo Culmann (TomCat73) 100 (801) 2012-02-08 21:53:30
#159 Simon S. (Simon) 100 (500) 2012-02-09 21:04:10
#160 Ulrich Dorobeck (Papageno) 100 (3827) 2012-02-11 15:15:25
#161 Hans Peter (hanspeter) 100 (52256) 2012-02-14 18:45:27
#162 John (Tiger) 100 (1505) 2012-02-21 00:10:17
#163 Benjamin Walter (Xemrox) 100 (701) 2012-02-26 14:50:46
#164 shaola (shaola) 100 (300) 2012-02-26 15:20:22
#165 Julia Boswell (jb_87) 100 (300) 2012-02-29 22:49:34
#166 Benne (post_ex0dus) 100 (601) 2012-03-01 12:25:25
#167 Sven Ebenfeld (twen) 100 (401) 2012-03-01 23:12:16
#168 Felix Mohr (winterwolf) 100 (2364) 2012-03-05 15:41:17
#169 Kurt Gebauer (Yokozuna) 100 (146278) 2012-03-05 21:49:49
#170 Dusan (xxdradus) 100 (40236) 2012-04-02 13:44:27
#171 H. Lautenschlager (helmi) 100 (29022) 2012-04-20 22:07:51
#172 Uli Dulli (Uli Dulli) 100 (1408) 2012-04-30 19:18:57
#173 Matthias Brand (cyberwoozle) 100 (1896) 2012-05-02 22:09:17
#174 Christof B. (beans90) 100 (9488) 2012-05-05 20:29:21
#175 captp (bdcht) 100 (5864) 2012-05-08 21:51:13
#176 Michel Van Caneghem (vancan) 100 (49719) 2012-06-04 17:08:32
#177 zuben c3 (zuben-c3) 100 (24853) 2012-06-05 11:13:40
#178 Bernd Klimaschewski (cryptonoob) 100 (1003) 2012-06-05 19:42:25
#179 Craig Martek (craigatron) 100 (500) 2012-06-11 00:18:36
#180 Daniel Richter (TheHiveMind) 100 (11147) 2012-06-13 14:04:10
#181 masam (jimboo) 100 (18687) 2012-06-18 17:02:43
#182 Peter Grosse-Hering (Peter) 100 (8097) 2012-06-26 11:46:27
#183 Sebastian Mederle (Thistle) 100 (1202) 2012-06-30 16:53:39
#184 John Simon (aquadraht) 100 (802) 2012-07-03 18:29:49
#185 Manfred Wurm (Tschabobo) 100 (8835) 2012-07-06 18:47:32
#186 Erwin Brenner (Ometheon) 100 (500) 2012-07-06 19:59:20
#187 Sebastian Slupina (Grandwizard) 100 (10264) 2012-07-13 03:17:07
#188 Chakay (Chakay) 100 (900) 2012-07-23 01:39:36
#189 Stepan (m1sterx) 100 (19165) 2012-07-24 19:42:01
#190 Urs Gysler (Sansibar) 100 (3269) 2012-07-26 22:13:57
#191 Max (131x) 100 (1659) 2012-08-08 00:14:32
#192 Victoria Fehr (Rika) 100 (1472) 2012-08-15 15:23:31
#193 Ignacio (Moebiusar) 100 (7390) 2012-08-19 01:25:52
#194 RPH (derichard) 100 (27044) 2012-09-03 21:38:41
#195 tuighin (tuighi) 100 (609) 2012-09-05 21:16:53
#196 KW (qwer*) 100 (13963) 2012-09-06 21:19:01
#197 Hank (hanky) 100 (22859) 2012-09-11 22:12:53
#198 Fitzcarraldo (fitzcarraldo) 100 (907) 2012-09-14 00:48:55
#199 Harry (Schwabenbambi) 100 (2409) 2012-09-17 17:02:37
#200 Hannes (Hartmann) 100 (8680) 2012-09-20 22:46:03
#201 Benny (Kingombo) 100 (3663) 2012-09-22 23:12:01
#202 Martina (Nikita) 100 (3863) 2012-09-24 00:04:48
#203 Paul Pantea (Soarele007) 100 (2695) 2012-10-21 18:28:05
#204 Alexander Dockhorn (Descartes) 100 (1200) 2012-10-24 12:59:19
#205 Christian (md6) 100 (1404) 2012-10-27 20:22:20
#206 Lukas Juhrich (ljuhrich) 100 (5453) 2012-10-31 21:27:11
#207 The Enigma (enigma) 100 (14336) 2012-11-04 01:09:08
#208 Julia Werdelmann (jw) 100 (10407) 2012-11-11 13:25:47
#209 George (Theofanidis) 100 (101521) 2012-11-19 13:38:37
#210 Jan Temme (JaT3) 100 (11694) 2012-12-09 03:34:18
#211 Gary Lee (garylee) 100 (2171) 2012-12-09 15:20:07
#212 Jan (Yazoh) 100 (1000) 2012-12-29 22:58:56
#213 Roger (gonix) 100 (901) 2013-01-01 18:29:05
#214 Thomas Hahn (4OsoCg31XYcO) 100 (1703) 2013-01-09 23:27:12
#215 kevin shaw (steggily) 100 (2298) 2013-01-16 17:39:33
#216 Iain Sharp (WoodenHedgehog) 100 (2196) 2013-01-16 17:40:56
#217 Daniel Hofer (Dada963) 100 (1001) 2013-01-27 15:52:23
#218 Michal (misoxxx) 100 (1710) 2013-02-05 18:46:06
#219 Snake (snk) 100 (72164) 2013-02-24 17:29:34
#220 Frans (fransl) 100 (2233) 2013-02-28 13:38:29
#221 Franc Marx (francmarx) 100 (900) 2013-03-12 09:50:02
#222 Hans Joachim Girulat (joregi) 100 (33493) 2013-03-13 23:05:03
#223 Velko Nikolov (staafl) 100 (13467) 2013-03-28 18:04:58
#224 Luigi Tomelli (archstanton) 100 (108345) 2013-04-01 15:08:27
#225 mk (bilbobeutlin) 100 (12340) 2013-04-03 22:43:14
#226 Ramon Rojas (superme) 100 (3409) 2013-04-14 05:04:22
#227 Petra (humppapenguin) 100 (3872) 2013-04-17 15:21:12
#228 swarmspider (swarmspider) 100 (4528) 2013-04-18 13:50:25
#229 Oliver Schneider (cenn81) 100 (1100) 2013-04-22 23:32:11
#230 Rolf (Dupre) 100 (700) 2013-04-23 13:09:51
#231 Almut (problelmo) 100 (45992) 2013-04-23 21:04:04
#232 Bernhard Gruber (bgr) 100 (22889) 2013-04-24 11:21:03
#233 Michael Reich (Walli) 100 (2288) 2013-04-24 14:02:34
#234 Frederik (Freed) 100 (900) 2013-04-24 21:37:30
#235 Stefan (sdn) 100 (5137) 2013-04-25 14:11:25
#236 Step (l0rdp3rth) 100 (836) 2013-04-25 14:33:54
#237 Philipp (Kohai) 100 (2208) 2013-04-25 15:59:54
#238 Brian Tawney (btawney) 100 (500) 2013-04-27 23:33:22
#239 Y (Yoshio) 100 (2194) 2013-04-28 14:51:31
#240 HE (hendeng) 100 (1600) 2013-05-03 15:57:03
#241 Felix (Flix) 100 (13712) 2013-05-06 17:19:25
#242 Jörg Schwarzwälder (secuso) 100 (2125) 2013-05-08 22:46:35
#243 Georgius Stolte (HazmatsFear) 100 (15671) 2013-05-11 08:58:46
#244 Hansemann (hansemak) 100 (3522) 2013-05-13 16:46:29
#245 Fuge (fugitech) 100 (917) 2013-05-19 23:04:04
#246 Alexander Buerger (a.buerger) 100 (2332) 2013-05-23 14:33:15
#247 CryptY (Grompf) 100 (2880) 2013-05-28 17:26:17
#248 Peter Krause (H.M.Voynich) 100 (900) 2013-06-04 15:37:02
#249 E.T (Ertheb) 100 (70256) 2013-06-13 11:26:23
#250 Friedemann (friede) 100 (3599) 2013-06-26 17:33:00
#251 Steve (Samacian) 100 (23804) 2013-06-28 15:23:05
#252 Laura (Weltenwandlerin) 100 (1004) 2013-06-29 21:16:28
#253 Sascha (DoctorHell) 100 (1305) 2013-07-09 23:08:43
#254 Vlatiha Romanova (Vlatiha) 100 (10323) 2013-07-15 16:17:06
#255 Philipp Hammer-Pohlau (phase2) 100 (17981) 2013-07-18 09:15:02
#256 Gronas (gronas) 100 (2667) 2013-07-21 18:52:12
#257 Forrest Gump (Polyphem) 100 (38763) 2013-07-24 23:07:56
#258 zahir mohsen moradi (ariobarzan) 100 (99757) 2013-08-05 21:29:03
#259 Em Doulgerakis (Greko) 100 (124033) 2013-08-08 14:45:30
#260 Andreas H. (Cyrpius) 100 (2666) 2013-08-15 20:36:20
#261 Stefan Schenk (schenkst) 100 (300) 2013-08-17 00:24:50
#262 Sebastian Kluge (zappo) 100 (1801) 2013-09-02 18:04:31
#263 Andreas Wolff (timberwolff) 100 (1340) 2013-09-08 12:19:35
#264 Alexander (cruachan) 100 (16051) 2013-09-14 01:42:56
#265 Gergely Simon (george314) 100 (16555) 2013-09-27 01:10:57
#266 Erich (ErichSt) 100 (4862) 2013-09-29 17:39:29
#267 Jens (McStryke) 100 (1600) 2013-10-23 21:27:20
#268 netzfritze (netzfritze) 100 (700) 2013-10-25 10:58:36
#269 Boris (Kaasu) 100 (16566) 2013-10-31 16:36:31
#270 Alexx (Nukualofa) 100 (100) 2013-10-31 20:44:22
#271 Hannes Nötzli (Faust) 100 (4781) 2013-11-07 14:44:08
#272 Bernd (Bughunter42) 100 (1100) 2013-11-14 11:41:24
#273 Zakk (zjacreman) 100 (500) 2013-11-19 05:36:28
#274 Claudi (bucaneros) 100 (701) 2013-11-24 19:43:34
#275 pablo (cooltrain) 100 (1500) 2013-11-26 21:05:18
#276 qwertz (pA8PFj6BGpZlUN0ddLYq) 100 (800) 2013-11-29 16:17:40
#277 Jim Gillogly (Scryer) 100 (21260) 2013-12-01 21:37:16
#278 artmagic (artmagic) 100 (6298) 2013-12-05 16:22:20
#279 Francisco Moraes (fmoraes) 100 (90044) 2013-12-10 17:46:52
#280 Mike (mike123) 100 (500) 2013-12-11 22:40:55
#281 cworstell (ace2) 100 (4870) 2013-12-12 04:49:42
#282 George Lasry (george4096) 100 (292103) 2013-12-12 17:02:19
#283 Alain (Integral) 100 (207924) 2013-12-14 19:56:07
#284 Kim H. S. (tenchijin) 100 (25468) 2013-12-26 08:20:40
#285 daskleine (daskleine123) 100 (2148) 2013-12-28 19:49:47
#286 Csaba Fitzl (csaby) 100 (6696) 2013-12-29 22:15:43
#287 Bertold (bk) 100 (9673) 2013-12-30 15:05:42
#288 Pavel (haw) 100 (22728) 2014-01-01 20:14:30
#289 Sebastian Liebl (Basti van Tasti) 100 (2548) 2014-01-05 11:35:06
#290 Stefan Reek (GeneralFailure) 100 (300) 2014-01-12 18:57:49
#291 Felix Eckardt (Felck) 100 (3464) 2014-01-20 00:09:22
#292 Merlin de la Haye (Merlin) 100 (700) 2014-01-20 18:21:04
#293 Dominik (Pistol) 100 (700) 2014-01-21 01:18:05
#294 Josef Gillhuber (jogimi51) 100 (2446) 2014-01-22 00:29:16
#295 Marcel (bene1512) 100 (20896) 2014-01-30 19:56:12
#296 Flo (0knowledge) 100 (902) 2014-02-02 22:19:07
#297 Flo (sealth) 100 (13472) 2014-02-08 21:27:01
#298 Nofre Tete (noffi) 100 (21921) 2014-02-09 18:43:56
#299 schloenz (shlnz) 100 (900) 2014-02-10 00:21:34
#300 Mepo (Marshall) 100 (1000) 2014-02-11 19:59:19
#301 Sascha (The Hoddich) 100 (4350) 2014-02-21 12:33:50
#302 Joerg Schaeffler (DrAcula) 100 (2948) 2014-03-06 11:53:28
#303 Karl Schutt (günter) 100 (41550) 2014-03-23 18:50:52
#304 Siggi Kraus (Kruxi) 100 (701) 2014-04-24 20:51:09
#305 Joe (IlmJoe) 100 (2938) 2014-05-06 14:48:54
#306 Matthias (mrcreosote) 100 (1100) 2014-05-16 15:08:28
#307 Thomas Schmucker (dg) 100 (26066) 2014-05-30 15:29:30
#308 Simone (Momo) 100 (5478) 2014-06-07 22:17:12
#309 HerrVo (HerrVo) 100 (1000) 2014-06-10 17:49:01
#310 Jian Wen (XxWappenxX) 100 (4048) 2014-06-16 15:35:55
#311 Armin Eckert (eckert100@gmail.com) 100 (900) 2014-06-21 19:17:53
#312 Julia Bernotat (El Greco ) 100 (81129) 2014-07-16 22:08:16
#313 julius gaius (julius) 100 (25581) 2014-07-19 18:04:26
#314 Hughes (hughes) 100 (4735) 2014-07-27 17:11:58
#315 Robert (rm) 100 (56475) 2014-07-31 23:48:50
#316 Tiloan (Tiloan) 100 (3840) 2014-08-17 12:30:45
#317 Andreas Frerichs (Ossili) 100 (33266) 2014-08-22 09:22:36
#318 Ekrem Aydin (Eko115) 100 (1105) 2014-08-30 22:32:29
#319 Peter Lustig (arsen) 100 (2838) 2014-09-01 07:36:53
#320 Isabella (Isa) 100 (4235) 2014-09-01 19:24:10
#321 Dmitry (DmitryMikhailov) 100 (1300) 2014-09-05 19:31:49
#322 Falk Fleischer (fafl) 100 (200) 2014-09-09 14:52:46
#323 Kerstin (herzchen412) 100 (3937) 2014-09-17 12:08:15
#324 testgrr (testgrr) 100 (3940) 2014-10-05 11:35:50
#325 Lane Williams (planetlane) 100 (20524) 2014-10-18 23:28:19
#326 Señor Saturn (senorsaturn) 100 (3344) 2014-10-20 23:27:49
#327 jej (stationz) 100 (4939) 2014-11-09 14:07:42
#328 HolgerK (HolgerK) 100 (25776) 2014-11-21 20:21:30
#329 Tim Fink (Magellan) 100 (4876) 2014-12-12 22:03:25
#330 ab (ababab) 100 (200) 2014-12-16 22:30:23
#331 Danny Higgins (hamster147) 100 (21817) 2014-12-28 10:02:47
#332 DirkS (Dustman) 100 (8479) 2014-12-29 12:47:26
#333 Nik Maks (nik) 100 (1201) 2015-01-02 09:39:41
#334 Kai Ludwig (TalentRaspel) 100 (15704) 2015-01-05 00:20:47
#335 Rainer Zufall (kiekuk) 100 (56786) 2015-02-22 20:28:37
#336 WF (f077) 100 (6874) 2015-02-23 18:36:16
#337 chris_3stones (3stones) 100 (37759) 2015-02-28 10:31:49
#338 c u (chuiuiui) 100 (100) 2015-03-27 23:57:57
#339 Brian Kieslich (briank) 100 (6733) 2015-04-03 14:25:36
#340 S (Dingo_the_BB) 100 (6534) 2015-04-05 21:06:02
#341 Creat1veM1ind (sokrates) 100 (2639) 2015-04-08 21:20:26
#342 Mike (Buckte) 100 (1621) 2015-04-11 22:56:23
#343 Martin Schulz (Kristallseele) 100 (2122) 2015-04-15 16:12:42
#344 Gabriel (Gabriel) 100 (400) 2015-04-15 19:35:22
#345 Kurkowski (ThomasK) 100 (2327) 2015-05-02 09:57:30
#346 Mehmet Adali (mehmetadali) 100 (2620) 2015-05-14 00:11:45
#347 partamier (yann) 100 (5435) 2015-05-15 14:56:41
#348 Ethan (EESearch) 100 (3925) 2015-05-22 20:03:57
#349 Michael Ammon (Ammonym) 100 (7719) 2015-05-24 02:35:27
#350 sam (sam) 100 (800) 2015-06-10 15:46:00
#351 Defekt75 (Defekt75) 100 (4325) 2015-06-12 21:24:27
#352 Mark van Heeswijk (markvh) 100 (2600) 2015-07-05 18:38:33
#353 Erik (Erox) 100 (22651) 2015-07-12 12:52:03
#354 Tradecraft (Tradecraft) 100 (5540) 2015-07-16 17:26:17
#355 sn0c (sn0c) 100 (200) 2015-08-03 21:35:25
#356 Peter Grössing (gpe) 100 (300) 2015-08-11 13:54:45
#357 Javantea (Javantea) 100 (40816) 2015-08-15 02:48:46
#358 Peter (TomBombadil) 100 (3417) 2015-08-31 12:08:01
#359 Sirius (Leznar) 100 (4552) 2015-09-08 15:13:57
#360 Joerg G. (SnifferMaster) 100 (17853) 2015-09-13 12:31:35
#361 Michael Jeffrey (empjay) 100 (3004) 2015-10-01 15:02:44
#362 J-L Morel (Rossignol) 100 (29125) 2015-10-06 15:11:43
#363 BananaJoee (BananaJoee) 100 (2515) 2015-10-06 23:06:46
#364 Martin (martinbucher) 100 (27363) 2015-10-24 14:47:36
#365 Szabó Zoltán (szabo.z87) 100 (55604) 2015-10-29 11:49:26
#366 S (Zyphe) 100 (10461) 2015-10-30 15:13:43
#367 Alain Collignon (vexilla72) 100 (80184) 2015-11-15 07:58:33
#368 Benjamin (Knorrke) 100 (1915) 2015-11-26 21:36:50
#369 Rainer (Rainer74) 100 (8417) 2015-12-04 21:38:19
#370 Joog (Joog) 100 (1208) 2015-12-07 15:57:45
#371 Andre Mueller (amueller) 100 (3215) 2015-12-19 21:38:27
#372 Andreas M (Diracspinor) 100 (600) 2015-12-21 15:04:08
#373 Dominik M. (Sgt. Pepper) 100 (87927) 2015-12-21 15:05:34
#374 T (Wagner) 100 (16887) 2015-12-22 19:40:18
#375 Marc (rcll0891) 100 (22180) 2016-01-03 17:08:13
#376 Daniel Neubacher (dneubacher) 100 (2413) 2016-01-06 17:28:57
#377 Casaubon (cfreuden) 100 (8515) 2016-01-11 10:19:21
#378 Michael (soilfront) 100 (2617) 2016-02-03 19:09:39
#379 D (devilchn) 100 (11142) 2016-02-04 16:19:19
#380 Thomas Bartscherer (Cipher) 100 (405) 2016-02-04 18:09:21
#381 Maria (julesjulchen) 100 (3019) 2016-02-22 12:58:06
#382 Peter (Garnet) 100 (14234) 2016-03-07 21:25:59
#383 Marco Manfredi (mkk9901) 100 (17686) 2016-03-09 08:59:27
#384 SMF (SMF) 100 (2208) 2016-03-12 19:34:55
#385 Lennart (Penthesilea) 100 (4110) 2016-04-16 21:15:57
#386 Wieland (wisch) 100 (6633) 2016-05-21 18:58:46
#387 Daniel Walder (ibex) 100 (14372) 2016-05-31 14:24:29
#388 Joris Diesvelt (SylverFox) 100 (4019) 2016-06-30 22:13:28
#389 Norbert Biermann (Norbert) 100 (44430) 2016-07-06 19:57:53
#390 mjustprocrastinating (kb) 100 (2116) 2016-07-15 23:30:54
#391 Benjamin Snavely (kaka) 100 (2708) 2016-08-06 21:44:42
#392 Chris Kolonko (ckolonko) 100 (900) 2016-08-09 18:47:00
#393 Martina (BonoV) 100 (3017) 2016-08-13 22:55:22
#394 Hajoe (Tintin-Muc) 100 (6923) 2016-08-14 23:15:55
#395 W.E. (NeoVenator) 100 (3005) 2016-08-20 21:04:51
#396 JoGo (JoGo) 100 (11686) 2016-08-28 15:06:32
#397 John Felix (johnf) 100 (3705) 2016-09-15 14:38:26
#398 Nicolas (nicosPavlov) 100 (151166) 2016-09-29 12:53:32
#399 Mirko Rendey (Biork) 100 (6295) 2016-10-04 12:20:00
#400 HeinzelMann (Ohm) 100 (5295) 2016-10-04 12:20:12
#401 Darchicourt (Darki) 100 (2306) 2016-10-17 13:34:08
#402 Christina Plump (1cc91) 100 (100) 2016-11-08 20:28:59
#403 Tristan1473 (Tristan1473) 100 (18914) 2016-11-09 12:20:35
#404 Michael (FoM) 100 (34465) 2016-11-16 22:07:29
#405 Julian (Lemmynator) 100 (16666) 2016-11-20 14:02:20
#406 Grigorios (grigorios) 100 (2205) 2016-12-03 22:39:28
#407 Imam Uasa (Merricx) 100 (9188) 2016-12-12 18:04:16
#408 Steffen (stmue) 100 (2911) 2016-12-16 09:32:51
#409 Meine Registrierung (TryC3) 100 (6045) 2016-12-26 17:48:34
#410 Nicholas (nichelfish) 100 (2205) 2016-12-29 19:17:27
#411 J@cK (J@cK) 100 (3800) 2017-01-20 11:30:12
#412 Rene (ion) 100 (5617) 2017-02-26 10:08:51
#413 Mir Dim (mir0soft) 100 (72404) 2017-03-10 14:18:33
#414 chris (c2) 100 (51973) 2017-03-11 12:17:45
#415 Nimsoo Sun (Nimsoosun) 100 (2518) 2017-03-13 20:27:45
#416 koaidien (koaidien) 100 (2215) 2017-03-17 02:50:52
#417 Chicken Attack (joker1569) 100 (2603) 2017-03-21 09:15:16
#418 sarah b (silva) 100 (12778) 2017-03-21 18:25:43
#419 Julian (guenni3000) 100 (500) 2017-04-01 22:52:05
#420 D3d4lu5 (D3d4lu5) 100 (260853) 2017-06-09 19:02:23
#421 Moomin (Mushmom) 100 (7674) 2017-07-14 23:56:56
#422 Akonia (Akonia12) 100 (12153) 2017-07-17 18:11:29
#423 Immo Weber (MandelToast) 100 (10061) 2017-08-05 23:37:39
#424 Godfrey Norton (Godfrey) 100 (8162) 2017-08-06 04:53:06
#425 kaktus16 (Sabine) 100 (500) 2017-08-17 14:45:44
#426 David (n1to) 100 (200) 2017-08-28 22:49:31
#427 Martin (Ehmpunkt) 100 (700) 2017-08-29 17:39:23
#428 nurnicu (nurnicu) 100 (1200) 2017-09-11 11:32:04
#429 Dennis Busch (0xDB) 100 (3693) 2017-09-24 18:26:48
#430 Andreas Zipse (zippi0815) 100 (3295) 2017-11-02 14:32:49
#431 Handrich (Handrich) 100 (3494) 2017-11-16 17:48:02
#432 nimroth (nimroth cynthor) 100 (6021) 2017-11-18 11:40:48
#433 teetrnker (teetrinker) 100 (2399) 2018-01-02 20:47:02
#434 Mihail (plexor) 100 (16827) 2018-02-01 16:08:27
#435 Julian (Ju1703) 100 (4190) 2018-02-21 10:11:25
#436 aysxdcfv (aysxdcfv) 100 (600) 2018-02-21 10:49:18
#437 ich (whoma) 100 (2299) 2018-02-21 22:32:59
#438 Jhoana Reichert (15faustino) 100 (1724) 2018-03-12 22:55:56
#439 Jrox (jrox) 100 (601) 2018-03-27 18:28:15
#440 Luciano Ignaczak (ignaczak) 100 (3390) 2018-03-30 05:02:14
#441 Steve Vaillancourt (stvai2) 100 (15041) 2018-04-28 22:30:45
#442 Lara Riegelhofer (larrow_sparrow) 100 (2798) 2018-05-12 15:05:50
#443 Eric (ExAstris) 100 (26990) 2018-05-15 20:26:44
#444 Benjamin (200611736) 100 (7776) 2018-05-28 17:37:09
#445 Christian (MarquisDeSud) 100 (3788) 2018-05-29 15:50:51
#446 Fedilia (Fedilia) 100 (4489) 2018-06-08 19:10:16
#447 Random Dude (rnd) 100 (75797) 2018-06-20 03:27:10
#448 Arbacle Clemens (arbacle) 100 (2502) 2018-07-21 23:06:47
#449 Yggi (Yggi) 100 (2295) 2018-10-02 10:20:38
#450 phoenix1204 (phoenix1204) 100 (1800) 2018-10-27 08:44:22
#451 Manfred Paul (manf) 100 (14774) 2018-11-13 22:36:07
#452 Clemens (16dombrowski) 100 (5136) 2018-12-08 14:54:26
#453 whitecowboy (whitecowboy) 100 (7346) 2018-12-21 17:24:25
#454 steven (steven18) 100 (2491) 2018-12-22 07:04:30
#455 Max (Max123) 100 (100) 2019-01-07 18:08:27
#456 Bertolo (Bertolo) 100 (7167) 2019-01-13 13:05:33
#457 Joe Doe (tr_joedoe) 100 (1600) 2019-01-20 21:03:14
#458 Kevin Weber (ThunderArmy) 100 (7783) 2019-02-05 20:45:54
#459 madness (madness) 100 (7976) 2019-02-13 06:35:00
#460 LoneWolf219 (LoneWolf219) 100 (12795) 2019-02-17 01:43:18
#461 Pierre Robier (tripleedged) 100 (5916) 2019-02-18 19:45:29
#462 Oliver H (AlfheriH) 100 (804) 2019-02-25 10:22:10
#463 Lia (Lia) 100 (6855) 2019-03-08 17:57:09
#464 Klaus Pulverer (kumaus) 100 (1001) 2019-03-13 17:21:15
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Sigaba Part 2

[stamp-06] - 3 users already solved this challenge.
 
 
 

Decrypt the given ciphertext which is encrypted with the Sigaba machine.
Please give the letters in the key as capital letters.

This challenge has solutions that cannot be automatically checked. If you find such a solution and want to receive your points please write us an E-Mail.
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Published on: 2010-10-14 13:30
Maximum number of attempts for this challenge: 5

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Rank User (#3) Achieved points (Global score) y-m-d - h:m:s

S Combes (jerva) 13432 (99132) 2015-04-17 19:12:08
Alain (Integral) 13397 (207924) 2015-08-26 15:54:15
George Lasry (george4096) 13258 (292103) 2017-06-08 06:55:11
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World Record Challenge: Break 65 Bits of AES

[schmeh-07] - 0 users already solved this challenge, 4 are working on it.
 
 
 

The longest key that has ever been publicly cracked by exhaustive key search was 64 bits long. The purpose of this challenge is to improve this world record by one bit.
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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: 50

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No one solved the challenge right now. Be the first!
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Beale Ciphers

[schmeh-04] - 1 user already solved this challenge.
 
 
 

In 1885, the US businessman James Ward published a booklet about an allegedly true story of a hidden treasure. According to the story, in 1823, a man named Thomas Beale hid several tons of gold and silver in a secret place and described the location of it in three encrypted messages. One of these messages was cracked, but it doesn't contain enough information to locate the treasure.

The two other messages are unsolved.
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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: 0

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Rank User (#1) Achieved points (Global score) y-m-d - h:m:s

Seth Kintigh (DarkFibre) 150 (79471) 2011-06-14 04:10:00
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   +++    [00:10 - 20.03.2019] gduncan solved the Level I challenge 'Caesar Encryption'    +++    [21:06 - 19.03.2019] gduncan solved the Level I challenge 'Number Sequence — Part 2'    +++    [21:00 - 19.03.2019] gduncan solved the Level I challenge 'Original Caesar Cipher'    +++    [20:30 - 19.03.2019] gduncan solved the Level I challenge 'Number Sequence'    +++    [19:35 - 19.03.2019] hanspeteryoo solved the Level I challenge 'Number Sequence — Part 2'    +++