MysteryTwister C3
NUMBER OF ACTIVE MEMBERS:

9454
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 (269)

Ordered by date posted, the most recent appear first.

Double Column Transposition Reloaded — Part 1

[wacker-08] - 0 users already solved this challenge, 2 are working on it.
 
 
 

The double columnar transposition is considered to be one of the best manual encryption systems. This sequence considers vulnerabilities that have been used to solve the corresponding level X challenge. The three challenges of the sequence have an increasing difficulty. In the first part an English plaintext has been encrypted with keys derived from English sentences.
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.

Authors: This email address is being protected from spambots. You need JavaScript enabled to view it.,This email address is being protected from spambots. You need JavaScript enabled to view it.,This email address is being protected from spambots. You need JavaScript enabled to view it.
Published on: 2013-12-11 20:09
Maximum number of attempts for this challenge: 15

All successful users of this challenge

No one solved the challenge right now. Be the first!
You must be logged in to solve the challenge


Enigma Messages with Repeated Letters — Part 2

[lasry-02] - 65 users already solved this challenge, 17 are working on it.
 
 
 

In this part of this series of Enigma challenges, a plaintext message consisting of one letter which is repeated several times has been encrypted by the Enigma I. What was the setting of the Enigma rotors?
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: 2013-10-28 20:53
Maximum number of attempts for this challenge: 15

All successful users of this challenge

Rank User (#65) Achieved points (Global score) y-m-d - h:m:s

Armin Krauss (argh) 200 (175390) 2013-10-28 23:12:20
Viktor (Veselovský) 200 (142053) 2013-10-29 01:39:38
Em Doulgerakis (Greko) 200 (124033) 2013-10-29 11:32:52
Kurt Gebauer (Yokozuna) 200 (146278) 2013-10-29 16:44:09
#5 Alexander (cruachan) 150 (16051) 2013-10-30 17:04:21
#6 Michael Möller (michaelm) 133 (169404) 2013-10-31 16:18:50
#7 Forrest Gump (Polyphem) 125 (38763) 2013-11-01 17:00:49
#8 J. M. (jomandi) 120 (113270) 2013-11-02 01:33:05
#9 Seth Kintigh (DarkFibre) 120 (79471) 2013-11-02 04:20:21
#10 Timo (Amarth) 120 (831) 2013-11-02 11:43:14
#11 E.T (Ertheb) 114 (70256) 2013-11-04 18:07:14
#12 Luigi Tomelli (archstanton) 111 (108345) 2013-11-06 14:01:55
#13 H. Lautenschlager (helmi) 111 (29022) 2013-11-06 20:11:39
#14 George (Theofanidis) 108 (101521) 2013-11-09 23:09:03
#15 Bart den Hartog (Bart13) 107 (118984) 2013-11-11 22:48:14
#16 Francisco Moraes (fmoraes) 106 (90044) 2013-11-13 23:30:01
#17 Jim Gillogly (Scryer) 103 (21260) 2013-12-05 21:32:06
#18 Dusan (xxdradus) 102 (40236) 2013-12-09 17:29:23
#19 TURINGBOMBE (TBREAKER) 102 (10616) 2013-12-22 14:35:59
#20 Alain (Integral) 101 (207924) 2014-01-14 08:22:19
#21 Thomas Lambert (lambert) 101 (35237) 2014-03-09 12:26:46
#22 David (aki321) 101 (27482) 2014-03-10 01:46:01
#23 Sebastian Slupina (Grandwizard) 101 (10264) 2014-03-12 14:06:11
#24 RPH (derichard) 101 (27044) 2014-03-24 19:02:16
#25 Karl Schutt (günter) 101 (41550) 2014-05-02 16:49:50
#26 Snake (snk) 100 (72164) 2014-06-06 16:17:55
#27 Michel Van Caneghem (vancan) 100 (49719) 2014-06-14 16:30:04
#28 Bernhard Gruber (bgr) 100 (22889) 2014-07-28 23:12:30
#29 Pavel Kessler (pavel) 100 (3791) 2014-07-30 22:41:57
#30 Robert (rm) 100 (56475) 2014-07-31 22:53:21
#31 Markus (Wasser) 100 (702) 2014-08-11 13:08:16
#32 julius gaius (julius) 100 (25581) 2014-08-14 08:44:09
#33 Julia Bernotat (El Greco ) 100 (81129) 2014-11-12 01:23:53
#34 S Combes (jerva) 100 (99132) 2015-01-25 20:34:39
#35 Rainer Zufall (kiekuk) 100 (56786) 2015-02-19 23:20:21
#36 Hans Joachim Girulat (joregi) 100 (33493) 2015-04-02 22:45:53
#37 Vlatiha Romanova (Vlatiha) 100 (10323) 2015-04-16 12:18:34
#38 Steve (Samacian) 100 (23804) 2015-05-19 02:12:10
#39 Andreas Frerichs (Ossili) 100 (33266) 2015-05-27 23:09:43
#40 zahir mohsen moradi (ariobarzan) 100 (99757) 2015-06-04 19:22:45
#41 Michael Ammon (Ammonym) 100 (7719) 2015-06-08 18:58:46
#42 KW (qwer*) 100 (13963) 2015-06-16 18:06:45
#43 Peter (TomBombadil) 100 (3417) 2015-09-06 18:40:58
#44 Claude Vaillancourt (Cl3v3r) 100 (38351) 2015-09-13 14:26:22
#45 J-L Morel (Rossignol) 100 (29125) 2015-10-22 10:43:32
#46 Szabó Zoltán (szabo.z87) 100 (55604) 2016-01-11 15:49:32
#47 Alain Collignon (vexilla72) 100 (80184) 2016-01-15 17:59:11
#48 Nofre Tete (noffi) 100 (21921) 2016-02-03 16:53:15
#49 Marc (rcll0891) 100 (22180) 2016-03-16 19:25:05
#50 Erik (Erox) 100 (22651) 2016-04-17 17:58:32
#51 Norbert Biermann (Norbert) 100 (44430) 2016-08-22 14:14:08
#52 Nicolas (nicosPavlov) 100 (151166) 2016-10-16 14:58:47
#53 zuben c3 (zuben-c3) 100 (24853) 2016-12-03 16:05:19
#54 Javantea (Javantea) 100 (40816) 2016-12-15 23:06:58
#55 Marcel (bene1512) 100 (20896) 2016-12-30 20:10:06
#56 Rene (ion) 100 (5617) 2017-02-02 20:44:28
#57 Dominik M. (Sgt. Pepper) 100 (87927) 2017-03-22 19:39:06
#58 chris (c2) 100 (51973) 2017-03-24 10:51:08
#59 Daniel Walder (ibex) 100 (14372) 2017-05-03 00:49:57
#60 Mir Dim (mir0soft) 100 (72404) 2017-05-07 12:10:44
#61 D3d4lu5 (D3d4lu5) 100 (260853) 2017-06-21 12:34:10
#62 Lane Williams (planetlane) 100 (20524) 2017-06-21 20:58:14
#63 Random Dude (rnd) 100 (75797) 2018-08-23 00:43:27
#64 sarah b (silva) 100 (12778) 2018-11-26 19:56:42
#65 Michael (FoM) 100 (34465) 2018-12-31 11:34:35
You must be logged in to solve the challenge


Trifid Cipher

[gysler-02] - 102 users already solved this challenge, 7 are working on it.
 
 
 

Two scatterbrained professors exchange messages that have been encrypted with the Trifid cipher. Unfortunately, one of them lost the second of three layers. Will he nevertheless be able to decrypt the message he received from his colleague?
Read more...

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

Author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published on: 2013-10-28 20:49
Maximum number of attempts for this challenge: 15

All successful users of this challenge

Rank User (#102) Achieved points (Global score) y-m-d - h:m:s

Armin Krauss (argh) 200 (175390) 2013-10-29 00:11:55
Kurt Gebauer (Yokozuna) 200 (146278) 2013-10-29 01:01:21
Viktor (Veselovský) 200 (142053) 2013-10-29 01:09:57
Snake (snk) 200 (72164) 2013-10-29 11:28:48
#5 H. Lautenschlager (helmi) 200 (29022) 2013-10-29 12:02:52
#6 Hans Peter (hanspeter) 200 (52256) 2013-10-29 13:43:41
#7 zahir mohsen moradi (ariobarzan) 200 (99757) 2013-10-29 14:26:29
#8 Michael Möller (michaelm) 200 (169404) 2013-10-29 17:20:19
#9 E.T (Ertheb) 200 (70256) 2013-10-29 17:44:41
#10 J. M. (jomandi) 150 (113270) 2013-10-30 10:00:11
#11 Hannes Nötzli (Faust) 150 (4781) 2013-10-30 16:54:48
#12 Alexander (cruachan) 150 (16051) 2013-10-30 18:04:02
#13 Bart den Hartog (Bart13) 150 (118984) 2013-10-30 19:22:24
#14 Forrest Gump (Polyphem) 133 (38763) 2013-10-31 00:45:09
#15 Steve (Samacian) 133 (23804) 2013-10-31 12:47:01
#16 Bernhard Gruber (bgr) 125 (22889) 2013-10-31 21:24:25
#17 KW (qwer*) 125 (13963) 2013-11-01 20:21:19
#18 George (Theofanidis) 120 (101521) 2013-11-01 23:38:52
#19 Sebastian Slupina (Grandwizard) 120 (10264) 2013-11-02 15:41:22
#20 Luigi Tomelli (archstanton) 111 (108345) 2013-11-06 10:19:08
#21 Holti (Holti) 108 (6035) 2013-11-09 18:06:25
#22 Shimi (elyimmy) 107 (207) 2013-11-11 19:41:34
#23 j.h. (haegarq) 106 (15252) 2013-11-14 13:54:06
#24 Joost (Joost) 103 (2653) 2013-11-26 00:24:15
#25 Dusan (xxdradus) 103 (40236) 2013-11-26 14:56:21
#26 A. S. (er1709) 103 (1608) 2013-12-02 22:19:53
#27 Em Doulgerakis (Greko) 101 (124033) 2014-01-06 15:49:01
#28 Alain (Integral) 101 (207924) 2014-01-12 17:28:03
#29 Steffen (Mandelbaum) 101 (101) 2014-01-15 17:49:49
#30 Kim H. S. (tenchijin) 101 (25468) 2014-01-22 13:23:09
#31 Nascha (Nascha) 101 (101) 2014-02-08 13:25:03
#32 Moritz Stocker (Trismegistos) 101 (2471) 2014-02-10 13:08:15
#33 Sascha (The Hoddich) 101 (4350) 2014-03-03 10:08:31
#34 Silvija H. (Hafner) 101 (401) 2014-03-15 22:45:59
#35 Laura (Weltenwandlerin) 101 (1004) 2014-03-18 17:10:04
#36 Felix (codeflx) 101 (1915) 2014-03-22 16:26:54
#37 masam (jimboo) 101 (18687) 2014-03-24 19:29:16
#38 Bertold (bk) 101 (9673) 2014-04-03 21:09:12
#39 Karl Schutt (günter) 101 (41550) 2014-04-04 21:03:11
#40 edventscher (edventscher) 101 (101) 2014-04-10 10:17:36
#41 Siggi Kraus (Kruxi) 101 (701) 2014-04-26 13:50:58
#42 Luca (jellyluke) 101 (2140) 2014-04-30 19:40:37
#43 Michael S (Scherbius) 101 (403) 2014-05-04 22:41:46
#44 Aivaras (TaiAivaras) 100 (500) 2014-05-20 17:37:42
#45 Michel Van Caneghem (vancan) 100 (49719) 2014-05-24 08:46:20
#46 Tina (BTina) 100 (1500) 2014-05-30 05:48:37
#47 Francisco Moraes (fmoraes) 100 (90044) 2014-06-28 16:56:00
#48 Jay Kay (Merty) 100 (3726) 2014-07-06 16:00:18
#49 Robert (rm) 100 (56475) 2014-07-31 23:06:07
#50 Julia Bernotat (El Greco ) 100 (81129) 2014-07-31 23:33:04
#51 Michael (miklzbr) 100 (100) 2014-08-19 22:16:20
#52 Andreas Frerichs (Ossili) 100 (33266) 2014-09-02 21:12:59
#53 Darío Lafuente (darolaf) 100 (100) 2014-09-23 21:34:15
#54 Lane Williams (planetlane) 100 (20524) 2014-11-24 20:40:18
#55 Heather Williams (planetheather) 100 (1927) 2014-11-24 21:08:07
#56 Julia Werdelmann (jw) 100 (10407) 2014-12-05 00:09:47
#57 Pavel (haw) 100 (22728) 2014-12-06 21:33:06
#58 ab (ababab) 100 (200) 2014-12-14 20:34:50
#59 Max Mustermann (MustermM) 100 (6661) 2014-12-16 16:54:47
#60 HolgerK (HolgerK) 100 (25776) 2014-12-22 23:55:19
#61 S Combes (jerva) 100 (99132) 2015-01-21 20:23:25
#62 Vlatiha Romanova (Vlatiha) 100 (10323) 2015-02-10 13:51:06
#63 Claude Vaillancourt (Cl3v3r) 100 (38351) 2015-02-12 18:12:03
#64 Elena (Lifeindeath) 100 (2798) 2015-02-19 23:37:59
#65 micaman (micaman) 100 (4634) 2015-02-21 00:03:31
#66 Muendo (muendo) 100 (3501) 2015-02-24 09:47:11
#67 Tim Fink (Magellan) 100 (4876) 2015-03-11 03:20:32
#68 Patrick Renz (tarantulla) 100 (2027) 2015-03-31 13:37:56
#69 Rainer Zufall (kiekuk) 100 (56786) 2015-04-07 15:06:19
#70 Thomas Gonda (TomG) 100 (36291) 2015-04-14 21:29:41
#71 Hans Joachim Girulat (joregi) 100 (33493) 2015-04-21 09:26:49
#72 Michael Ammon (Ammonym) 100 (7719) 2015-06-20 22:48:44
#73 Mikaela Bergstedt (Millie82) 100 (200) 2015-07-07 11:56:47
#74 Alain Collignon (vexilla72) 100 (80184) 2015-10-07 11:50:30
#75 S (Zyphe) 100 (10461) 2015-10-24 20:23:34
#76 Szabó Zoltán (szabo.z87) 100 (55604) 2015-11-01 05:22:58
#77 Dominik M. (Sgt. Pepper) 100 (87927) 2015-12-16 10:04:10
#78 Ines (bufo01) 100 (4515) 2016-02-22 23:18:13
#79 Peter (Garnet) 100 (14234) 2016-03-13 23:26:06
#80 Stephan (stegi) 100 (801) 2016-07-09 20:51:47
#81 J-L Morel (Rossignol) 100 (29125) 2016-07-10 17:33:57
#82 Norbert Biermann (Norbert) 100 (44430) 2016-07-31 22:47:59
#83 Nicolas (nicosPavlov) 100 (151166) 2016-10-07 12:37:59
#84 Hajoe (Tintin-Muc) 100 (6923) 2016-10-24 23:01:50
#85 Yass (Yass) 100 (300) 2016-11-04 21:15:39
#86 Michael (FoM) 100 (34465) 2016-11-29 23:48:37
#87 Marcel (bene1512) 100 (20896) 2016-12-29 18:07:38
#88 Nofre Tete (noffi) 100 (21921) 2016-12-29 18:09:10
#89 Anggia (Vuleedazula) 100 (1608) 2017-03-07 12:39:46
#90 Mir Dim (mir0soft) 100 (72404) 2017-03-21 07:20:36
#91 chris (c2) 100 (51973) 2017-03-28 19:50:48
#92 Daniel Walder (ibex) 100 (14372) 2017-05-11 23:33:18
#93 D3d4lu5 (D3d4lu5) 100 (260853) 2017-06-18 03:41:37
#94 Jimmy Gauvin (amateur) 100 (200) 2017-09-13 23:26:25
#95 Michael Jeffrey (empjay) 100 (3004) 2017-12-26 20:02:43
#96 Richard Bean (detrevni) 100 (100) 2018-03-24 05:34:35
#97 Benjamin (200611736) 100 (7776) 2018-04-13 23:40:59
#98 Samuel (Samusicus) 100 (2203) 2018-04-23 21:52:01
#99 Eric (ExAstris) 100 (26990) 2018-05-29 17:55:23
#100 Random Dude (rnd) 100 (75797) 2018-07-06 02:09:53
#101 sarah b (silva) 100 (12778) 2018-07-31 14:15:08
#102 Julian (Lemmynator) 100 (16666) 2018-07-31 16:51:53
You must be logged in to solve the challenge


Enigma Messages with Repeated Letters — Part 1

[lasry-01] - 144 users already solved this challenge, 21 are working on it.
 
 
 

In this part of this series of Enigma challenges, a plaintext message consisting of one letter which is repeated several times has been encrypted by the Enigma I. What is the letter we are looking for?
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: 2013-09-26 15:05
Maximum number of attempts for this challenge: 3

All successful users of this challenge

Rank User (#144) Achieved points (Global score) y-m-d - h:m:s

Armin Krauss (argh) 200 (175390) 2013-09-26 15:14:57
H. Lautenschlager (helmi) 200 (29022) 2013-09-26 15:43:29
J. M. (jomandi) 200 (113270) 2013-09-26 15:57:21
Alexander (cruachan) 200 (16051) 2013-09-26 16:49:25
#5 Em Doulgerakis (Greko) 200 (124033) 2013-09-26 18:21:52
#6 Kurt Gebauer (Yokozuna) 200 (146278) 2013-09-26 19:48:57
#7 George (Theofanidis) 200 (101521) 2013-09-26 20:04:18
#8 KW (qwer*) 200 (13963) 2013-09-26 21:25:26
#9 Michael Möller (michaelm) 200 (169404) 2013-09-26 21:53:56
#10 Aliazer (Aliazer) 200 (12314) 2013-09-26 21:56:47
#11 Viktor (Veselovský) 200 (142053) 2013-09-26 21:57:26
#12 E.T (Ertheb) 200 (70256) 2013-09-26 22:25:54
#13 zahir mohsen moradi (ariobarzan) 200 (99757) 2013-09-26 23:15:41
#14 Forrest Gump (Polyphem) 200 (38763) 2013-09-26 23:59:30
#15 Bernhard Gruber (bgr) 150 (22889) 2013-09-27 16:25:22
#16 David (aki321) 150 (27482) 2013-09-27 18:38:10
#17 Paul (pgilbert) 150 (657) 2013-09-28 04:56:40
#18 Luigi Tomelli (archstanton) 150 (108345) 2013-09-28 11:40:58
#19 Bart den Hartog (Bart13) 133 (118984) 2013-09-29 02:39:38
#20 Roland Jansen (roland) 133 (17607) 2013-09-29 12:31:27
#21 Sebastian Slupina (Grandwizard) 125 (10264) 2013-09-29 18:53:32
#22 Hans Peter (hanspeter) 117 (52256) 2013-10-02 11:01:17
#23 Ethlaron (Ethlaron) 113 (1253) 2013-10-04 09:43:19
#24 Snake (snk) 109 (72164) 2013-10-07 10:21:00
#25 Georg Dietze (Poramyco) 108 (211) 2013-10-07 20:25:53
#26 DirkS (Dustman) 107 (8479) 2013-10-10 14:41:25
#27 Timo (Amarth) 106 (831) 2013-10-12 15:04:29
#28 trypsonite (trypsonite) 105 (305) 2013-10-14 19:18:42
#29 Steve (Samacian) 105 (23804) 2013-10-15 01:03:43
#30 Hank (hanky) 105 (22859) 2013-10-15 10:26:32
#31 Kurkowski (ThomasK) 105 (2327) 2013-10-15 21:10:33
#32 Stuart Barton (knerve) 105 (207) 2013-10-16 17:36:29
#33 Ashish Kumar Srivastava (lifeinashish) 103 (103) 2013-10-24 18:02:40
#34 Manfred Wurm (Tschabobo) 103 (8835) 2013-10-30 16:49:05
#35 Seth Kintigh (DarkFibre) 103 (79471) 2013-11-02 03:50:22
#36 Francisco Moraes (fmoraes) 102 (90044) 2013-11-13 05:21:36
#37 Boris (Kaasu) 102 (16566) 2013-11-14 16:38:01
#38 Jim Gillogly (Scryer) 101 (21260) 2013-12-02 08:15:20
#39 A. S. (er1709) 101 (1608) 2013-12-02 22:42:37
#40 Dusan (xxdradus) 101 (40236) 2013-12-03 10:13:19
#41 Sebastian Kluge (zappo) 101 (1801) 2013-12-04 21:38:16
#42 bla (bla) 101 (2750) 2013-12-19 02:55:32
#43 TURINGBOMBE (TBREAKER) 101 (10616) 2013-12-22 14:10:31
#44 Alain (Integral) 101 (207924) 2014-01-13 15:12:24
#45 Paul Wagner (Sequence1) 101 (602) 2014-01-23 16:17:53
#46 Flo (0knowledge) 101 (902) 2014-02-02 12:27:36
#47 Klaus Mohrmann (sub) 101 (301) 2014-02-05 11:22:02
#48 Moritz Stocker (Trismegistos) 101 (2471) 2014-02-11 22:22:34
#49 Nofre Tete (noffi) 101 (21921) 2014-02-12 00:19:35
#50 Sascha (The Hoddich) 101 (4350) 2014-02-25 13:47:12
#51 Jürgen Walkowski (checker_vom_neckar) 101 (101) 2014-02-28 01:07:33
#52 Thomas Lambert (lambert) 101 (35237) 2014-03-08 18:12:48
#53 mark (FivePrime) 101 (3345) 2014-03-24 13:57:40
#54 RPH (derichard) 101 (27044) 2014-03-24 18:38:43
#55 Karl Schutt (günter) 100 (41550) 2014-04-21 11:03:35
#56 Joe (IlmJoe) 100 (2938) 2014-05-07 11:57:05
#57 Michel Van Caneghem (vancan) 100 (49719) 2014-06-12 11:27:41
#58 Pavel Kessler (pavel) 100 (3791) 2014-07-22 17:46:36
#59 Javantea (Javantea) 100 (40816) 2014-07-22 23:04:26
#60 Robert (rm) 100 (56475) 2014-07-31 22:40:26
#61 Julia Bernotat (El Greco ) 100 (81129) 2014-08-09 21:31:55
#62 julius gaius (julius) 100 (25581) 2014-08-10 09:43:37
#63 Markus (Wasser) 100 (702) 2014-08-11 11:40:35
#64 Thomas Gonda (TomG) 100 (36291) 2014-08-29 22:36:26
#65 Lane Williams (planetlane) 100 (20524) 2014-10-29 01:34:54
#66 Andreas Frerichs (Ossili) 100 (33266) 2014-11-07 15:35:11
#67 jej (stationz) 100 (4939) 2014-11-09 05:25:52
#68 Pavel (haw) 100 (22728) 2014-12-06 14:20:34
#69 Lazar Vlad (drywater) 100 (300) 2014-12-28 01:45:41
#70 Jeetsagar (jeetsagar) 100 (2429) 2015-01-14 18:09:23
#71 Stefan Will (Kingkojak) 100 (300) 2015-01-14 22:18:14
#72 S Combes (jerva) 100 (99132) 2015-01-17 22:22:35
#73 Kerstin (herzchen412) 100 (3937) 2015-01-28 14:30:48
#74 Joerg Schaeffler (DrAcula) 100 (2948) 2015-01-28 17:08:32
#75 Claude Vaillancourt (Cl3v3r) 100 (38351) 2015-01-29 01:06:13
#76 Elena (Lifeindeath) 100 (2798) 2015-02-19 17:40:57
#77 Rainer Zufall (kiekuk) 100 (56786) 2015-02-19 18:21:37
#78 Tom Tox (tox) 100 (17708) 2015-02-19 21:30:51
#79 Georgius Stolte (HazmatsFear) 100 (15671) 2015-02-20 20:31:48
#80 FB (fb) 100 (100) 2015-02-26 18:19:32
#81 Mike H (Hunter234) 100 (800) 2015-03-02 11:55:33
#82 Johannes Leupold (TraderJoe) 100 (403) 2015-03-05 13:44:18
#83 Hans Joachim Girulat (joregi) 100 (33493) 2015-03-30 20:17:51
#84 Patrick Renz (tarantulla) 100 (2027) 2015-04-07 11:29:02
#85 Vlatiha Romanova (Vlatiha) 100 (10323) 2015-04-10 08:28:47
#86 Noah (Pakashi) 100 (100) 2015-04-19 16:43:46
#87 Ulrich Dorobeck (Papageno) 100 (3827) 2015-05-14 16:46:34
#88 M (m3000) 100 (300) 2015-05-23 17:52:28
#89 Michael Ammon (Ammonym) 100 (7719) 2015-06-08 14:27:54
#90 Dave (compsec) 100 (3631) 2015-06-10 00:07:57
#91 sam (sam) 100 (800) 2015-06-12 05:32:55
#92 Erik (Erox) 100 (22651) 2015-08-03 18:55:38
#93 Peter (TomBombadil) 100 (3417) 2015-09-06 10:44:08
#94 Joseph (MO_JOE) 100 (100) 2015-09-12 21:00:03
#95 Martin (martinbucher) 100 (27363) 2015-10-10 16:37:13
#96 J-L Morel (Rossignol) 100 (29125) 2015-10-22 10:00:12
#97 nori (nori) 100 (400) 2015-12-17 17:35:44
#98 Alain Collignon (vexilla72) 100 (80184) 2016-01-09 14:24:02
#99 Szabó Zoltán (szabo.z87) 100 (55604) 2016-01-11 10:19:19
#100 j.h. (haegarq) 100 (15252) 2016-01-27 17:47:09
#101 D (devilchn) 100 (11142) 2016-02-04 13:17:48
#102 Ines (bufo01) 100 (4515) 2016-03-01 21:15:59
#103 Peter (Garnet) 100 (14234) 2016-03-11 13:31:06
#104 Marc (rcll0891) 100 (22180) 2016-03-14 21:23:30
#105 Dominik M. (Sgt. Pepper) 100 (87927) 2016-03-20 14:47:28
#106 Lennart (Penthesilea) 100 (4110) 2016-04-16 17:28:47
#107 Gugu (Willyz) 100 (1810) 2016-04-19 16:55:21
#108 Stephan (stegi) 100 (801) 2016-06-13 21:05:10
#109 Anna (Maran) 100 (501) 2016-06-24 20:56:38
#110 Hajoe (Tintin-Muc) 100 (6923) 2016-08-15 22:58:22
#111 Norbert Biermann (Norbert) 100 (44430) 2016-08-22 08:51:54
#112 Advin (AdvinRoz) 100 (200) 2016-08-29 11:45:42
#113 Boy Gorissen (Boy) 100 (200) 2016-08-29 11:47:49
#114 sjaakbanaan (sjaakbanaan) 100 (200) 2016-08-29 14:27:54
#115 Mike (Mike77) 100 (300) 2016-08-29 14:30:30
#116 Anthony (Anthony) 100 (300) 2016-08-29 14:30:46
#117 HeinzelMann (Ohm) 100 (5295) 2016-09-27 12:49:53
#118 Mirko Rendey (Biork) 100 (6295) 2016-09-27 14:19:12
#119 Nicolas (nicosPavlov) 100 (151166) 2016-10-07 11:57:16
#120 zuben c3 (zuben-c3) 100 (24853) 2016-11-29 21:55:45
#121 JoGo (JoGo) 100 (11686) 2016-12-04 11:40:28
#122 Michael (FoM) 100 (34465) 2016-12-17 02:41:28
#123 Marcel (bene1512) 100 (20896) 2016-12-30 20:11:22
#124 Meine Registrierung (TryC3) 100 (6045) 2016-12-31 00:47:57
#125 S (Zyphe) 100 (10461) 2017-01-15 01:18:42
#126 Rene (ion) 100 (5617) 2017-02-15 22:25:20
#127 chris (c2) 100 (51973) 2017-03-01 21:36:04
#128 Mir Dim (mir0soft) 100 (72404) 2017-03-14 14:17:38
#129 vsp (vsp) 100 (700) 2017-03-24 15:15:55
#130 Daniel Walder (ibex) 100 (14372) 2017-05-01 22:31:36
#131 D3d4lu5 (D3d4lu5) 100 (260853) 2017-06-20 15:57:23
#132 Tim Fink (Magellan) 100 (4876) 2017-06-21 13:06:07
#133 velo (veli) 100 (500) 2017-12-27 12:33:58
#134 Danny Higgins (hamster147) 100 (21817) 2018-03-02 23:01:53
#135 Steve Vaillancourt (stvai2) 100 (15041) 2018-05-14 16:29:20
#136 Eric (ExAstris) 100 (26990) 2018-06-07 22:51:02
#137 Random Dude (rnd) 100 (75797) 2018-07-02 04:23:29
#138 David (Youcube) 100 (100) 2018-07-05 22:53:54
#139 Julian (Lemmynator) 100 (16666) 2018-07-26 11:33:34
#140 sarah b (silva) 100 (12778) 2018-08-23 11:29:48
#141 mglarragan (mglarragan) 100 (2091) 2018-11-11 11:27:42
#142 clyto (clytorock) 100 (3195) 2018-11-12 23:01:32
#143 Pierre Robier (tripleedged) 100 (5916) 2019-02-17 20:21:17
#144 LoneWolf219 (LoneWolf219) 100 (12795) 2019-03-10 01:40:29
You must be logged in to solve the challenge


Hill Cipher with Sudoku Key

[doulgerakis-01] - 66 users already solved this challenge, 2 are working on it.
 
 
 

You find a note with strange characters and an unsolved Sudoku on your brother's desk. You are curious and would like to find out what your brother is working on. Can you decrypt the note using the Sudoku?
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: 2013-09-04 16:27
Maximum number of attempts for this challenge: 15

All successful users of this challenge

Rank User (#66) Achieved points (Global score) y-m-d - h:m:s

Armin Krauss (argh) 200 (175390) 2013-09-04 16:45:32
George (Theofanidis) 200 (101521) 2013-09-04 18:43:31
masam (jimboo) 200 (18687) 2013-09-05 00:18:55
E.T (Ertheb) 200 (70256) 2013-09-05 12:53:10
#5 Andreas Wolff (timberwolff) 133 (1340) 2013-09-06 18:49:50
#6 Alexander (cruachan) 133 (16051) 2013-09-07 03:30:17
#7 zahir mohsen moradi (ariobarzan) 133 (99757) 2013-09-07 12:07:33
#8 H. Lautenschlager (helmi) 125 (29022) 2013-09-08 15:06:32
#9 Kurt Gebauer (Yokozuna) 125 (146278) 2013-09-08 15:12:34
#10 Luigi Tomelli (archstanton) 125 (108345) 2013-09-08 16:04:53
#11 Viktor (Veselovský) 120 (142053) 2013-09-08 21:59:22
#12 Forrest Gump (Polyphem) 117 (38763) 2013-09-10 01:32:01
#13 Michael Möller (michaelm) 114 (169404) 2013-09-10 16:36:11
#14 J. M. (jomandi) 113 (113270) 2013-09-12 15:45:57
#15 Bart den Hartog (Bart13) 111 (118984) 2013-09-12 23:07:47
#16 Benedikt M. (bm91) 110 (4112) 2013-09-14 15:36:05
#17 Erich (ErichSt) 104 (4862) 2013-09-27 12:31:53
#18 Gergely Simon (george314) 103 (16555) 2013-10-03 01:03:30
#19 Ethlaron (Ethlaron) 103 (1253) 2013-10-07 18:49:20
#20 Paul (pgilbert) 103 (657) 2013-10-13 06:01:02
#21 Timo (Amarth) 102 (831) 2013-10-15 19:12:24
#22 chris_3stones (3stones) 102 (37759) 2013-10-31 19:25:33
#23 KW (qwer*) 101 (13963) 2013-12-15 21:19:19
#24 Alain (Integral) 101 (207924) 2013-12-25 22:16:37
#25 Joost (Joost) 101 (2653) 2014-01-02 15:08:22
#26 Pavel (haw) 101 (22728) 2014-01-07 16:21:32
#27 Moritz Stocker (Trismegistos) 101 (2471) 2014-02-10 14:23:40
#28 Marcel (bene1512) 101 (20896) 2014-02-16 13:28:12
#29 Kim H. S. (tenchijin) 101 (25468) 2014-03-12 11:37:24
#30 Felix (codeflx) 101 (1915) 2014-03-23 11:31:06
#31 RPH (derichard) 100 (27044) 2014-03-26 09:41:11
#32 Karl Schutt (günter) 100 (41550) 2014-05-01 18:20:13
#33 Michel Van Caneghem (vancan) 100 (49719) 2014-05-25 11:48:49
#34 Francisco Moraes (fmoraes) 100 (90044) 2014-06-21 04:19:44
#35 Manfred Wurm (Tschabobo) 100 (8835) 2014-07-06 13:08:29
#36 Robert (rm) 100 (56475) 2014-07-31 22:58:12
#37 julius gaius (julius) 100 (25581) 2014-08-20 00:30:08
#38 Julia Bernotat (El Greco ) 100 (81129) 2014-08-23 23:09:16
#39 Tim Fink (Magellan) 100 (4876) 2014-10-31 00:56:41
#40 Claude Vaillancourt (Cl3v3r) 100 (38351) 2015-01-08 17:01:05
#41 HolgerK (HolgerK) 100 (25776) 2015-01-14 22:04:58
#42 Steve (Samacian) 100 (23804) 2015-03-04 00:47:00
#43 Andreas Frerichs (Ossili) 100 (33266) 2015-03-21 20:10:05
#44 Rainer Zufall (kiekuk) 100 (56786) 2015-04-13 22:55:30
#45 Hans Joachim Girulat (joregi) 100 (33493) 2015-07-08 16:50:04
#46 Szabó Zoltán (szabo.z87) 100 (55604) 2015-11-24 09:21:39
#47 Lane Williams (planetlane) 100 (20524) 2016-01-25 00:53:56
#48 Alain Collignon (vexilla72) 100 (80184) 2016-03-08 11:48:28
#49 Felix (Flix) 100 (13712) 2016-04-02 19:11:04
#50 Nicolas (nicosPavlov) 100 (151166) 2016-10-24 11:59:21
#51 Peter (Garnet) 100 (14234) 2016-10-31 15:21:52
#52 Nofre Tete (noffi) 100 (21921) 2016-12-23 19:57:38
#53 S (Zyphe) 100 (10461) 2017-01-08 20:23:18
#54 zuben c3 (zuben-c3) 100 (24853) 2017-01-09 12:08:06
#55 Dominik M. (Sgt. Pepper) 100 (87927) 2017-02-21 00:55:21
#56 Simon Hemmerich (simhem) 100 (800) 2017-03-13 22:40:09
#57 chris (c2) 100 (51973) 2017-04-02 13:52:42
#58 Geovano (Bitelo) 100 (100) 2017-04-23 06:05:53
#59 Luciano Ignaczak (CryptoClass2017) 100 (3798) 2017-05-01 07:21:22
#60 D3d4lu5 (D3d4lu5) 100 (260853) 2017-06-17 16:00:54
#61 T (Wagner) 100 (16887) 2017-07-25 17:19:17
#62 Martin (martinbucher) 100 (27363) 2017-10-12 16:42:32
#63 Random Dude (rnd) 100 (75797) 2018-07-05 00:59:09
#64 Michael (FoM) 100 (34465) 2018-12-29 22:11:47
#65 sarah b (silva) 100 (12778) 2019-01-30 18:38:09
#66 Klaus Pulverer (kumaus) 100 (1001) 2019-03-19 15:36:08
You must be logged in to solve the challenge
 
 
powered by the CrypTool project  CrypTool

 

   +++    [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'    +++