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With the launch of MysteryTwister C3 you can challenge your own knowledge by solving the given cryptographic challenges.

	MTC3 -- The new Crypto Cipher Contest
	Welcome to MTC3! You like riddles? You always loved to solve the crosswords in your newspaper? Or maybe you are just curious and want to find out about some of the ways to hide a secret (and possibily even to uncover it)? This is your place! Here at MysteryTwister C3 you can solve crypto challenges, starting from the simple Caesar cipher all the way to modern AES we have challenges for everyone. Our challenges range from level I to III, and an additional level X for "mystery" challenges (they may have been unsolved for a long time, mostly we don't know their solution or have no idea whether there is a solution at all). If you are a beginner its probably best if you start trying those challenges that have been solved mostly (see table below). For some background information check out our about page. In addition MysteryTwister C3 offers various raffles each month. You can find information about the current raffle here. For example it’s possible to win Amazon coupons, trophies, coffee cups or T-shirts.
	You might want to try some of these The following table provides you with the list of all currently available challenges, excluding those you already solved if you are logged in -- sorted by default by the ones which have been solved mostly by all users. Alternatively you can also sort the table by content of column [to do this just click on the head of one of the columns "Challenge name", "Level", "# times solved" or "Current points to get"]. "Current points to get" shows how many points you get when you submit the solution today. By clicking on the challenge name within the list you will be taken directly to the corresponding challenge and can start solving it. Score hunters try those challenges that yield the highest available points. Accordingly, those will be harder! Test your skills! Check, which levels to show Level I Level II Level III Level X If you are logged-in this list will only show those challenges you haven't solved yet. # Challenge name Level # times solved Current points to get 1 Number Sequence I 739 100 2 Original Caesar Cipher I 310 100 3 Caesar Encryption I 224 100 4 Monoalphabetic Substitution I 169 100 5 Number Sequence - Part 2 I 138 100 6 Homophonic Encryption Part 1 I 93 100 7 Homophonic Encryption Part 2 I 87 100 8 One-Time Pad with Flaws I 78 100 9 Affine Codes / Modulo Arithmetic with N / Extended Euclid I 70 101 10 Alice's Birthday Party (Part 1) II 61 1000 11 Alice's Birthday Party (Part 2) II 60 1000 12 Factorization Cipher - Part 1 I 54 101 13 Letter from the Alleged Countess Julie von Ortenburg I 53 100 14 Classical Ciphers^3 I 49 100 15 A Secret Message from Castle Mansfeld I 47 100 16 Brute-Force-Attack on Triple-DES with Reduced Key Space II 43 1000 17 Cracking SHA1-Hashed Passwords II 42 1000 18 Grille Cipher I 41 101 19 Not-so-Secret Message from Malawi – Part I (RSA) II 37 1000 20 Enigma Part 1 II 34 1000 21 Hybrid Encryption I II 34 1000 22 Modified Caesar Cipher I 32 101 23 Broadcasting and low exponent - RSA-Attack II 32 1000 24 Kaskade-S/T – Part 1 I 31 100 25 Molehunt (Part 2/3) I 31 100 26 Molehunt (Part 1/3) I 31 100 27 Zodiac Cipher I 26 100 28 Pigpen with a twist - Part 1 I 26 101 29 Enigma Combinatorics I 26 100 30 A really long number sequence II 25 1010 31 Post-Quantum Cryptography: Unbalanced Oil and Vinegar System - Part 1 I 24 100 32 ADFGVX - Part 2 I 24 101 33 RSA: Two different keys - same ciphertext II 24 1010 34 ORYX Stream Cipher Part I II 23 1000 35 Molehunt (Part 3/3) II 20 1000 36 ADFGVX - Part 1 I 19 101 37 Smartcard RSA II 18 1000 38 Playfair Encryption I 17 100 39 Enigma Part 2 II 16 1000 40 An Invisible Message I 15 101 41 Factorization Cipher - Part 2 II 15 1010 42 Unusual encryption using a diophantine equation II 14 1010 43 Lunchtime Attack on the Fully Homomorphic Encryption Scheme II 14 1000 44 Kaskade-S/T – Part 2 II 14 1000 45 Double Columnar Transposition I 13 101 46 Turing Bombe Enigma I I 13 101 47 Lattice Part 1 II 12 1000 48 ORYX Stream Cipher Part II II 12 1000 49 Music Code - Part 1 I 11 100 50 Not-so-Secret Message from Malawi – Part II (ECC) II 10 1000 51 Partial Key Exposure with RSA – Part 1 II 10 1087 52 Music Code - Part 2 II 9 1000 53 Kaskade-S/T – Part 3 II 9 1000 54 AES key - encoded in the machine readable zone of a European ePassport II 9 1031 55 Factorization Cipher - Part 3 II 8 1020 56 Monoalphabetic substitution with camouflage - Part 3 II 7 1010 57 Monoalphabetic substitution with camouflage - Part 2 II 7 1010 58 Pigpen with a twist - Part 2 II 6 1010 59 Pigpen with a twist - Part 3 II 6 1010 60 Unconcealed RSA messages II 6 1010 61 Monoalphabetic substitution with camouflage - Part 4 I 6 102 62 CMEA 1 II 5 1000 63 Ku Klux Klan X 5 var 64 RSA with Special d III 5 10000 65 Monoalphabetic substitution with camouflage - Part 1 I 5 101 66 CMEA 2 III 4 10000 67 Post-Quantum Cryptography: Unbalanced Oil and Vinegar System - Part 2 II 3 1000 68 Akelarre Part 1 II 2 1000 69 Purple 1 II 2 1000 70 Sigaba Part 1 II 2 1000 71 Kaskade-S/T - Part 5 II 1 1000 72 Beale Ciphers X 1 var 73 RSA Factoring Challenge: RSA-380 III 0 10638 74 RSA Factoring Challenge: RSA-390 III 0 10638 75 RSA Factoring Challenge: RSA-400 III 0 10638 76 RSA Factoring Challenge: RSA-370 III 0 10638 77 RSA Factoring Challenge: RSA-350 III 0 10638 78 RSA Factoring Challenge: RSA-310 III 0 10638 79 RSA Factoring Challenge: RSA-1024 III 0 10638 80 RSA Factoring Challenge: RSA-320 III 0 10638 81 RSA Factoring Challenge: RSA-330 III 0 10638 82 RSA Factoring Challenge: RSA-410 III 0 10638 83 RSA Factoring Challenge: RSA-340 III 0 10638 84 RSA Factoring Challenge: RSA-360 III 0 10638 85 RSA Factoring Challenge: RSA-430 III 0 10638 86 RSA Factoring Challenge: RSA-470 III 0 10638 87 RSA Factoring Challenge: RSA-1536 III 0 10638 88 RSA Factoring Challenge: RSA-480 III 0 10638 89 RSA Factoring Challenge: RSA-490 III 0 10638 90 RSA Factoring Challenge: RSA-500 III 0 10638 91 RSA Factoring Challenge: RSA-460 III 0 10638 92 RSA Factoring Challenge: RSA-450 III 0 10638 93 RSA Factoring Challenge: RSA-617 III 0 10638 94 RSA Factoring Challenge: RSA-440 III 0 10638 95 RSA Factoring Challenge: RSA-309 III 0 10638 96 RSA Factoring Challenge: RSA-2048 III 0 10638 97 RSA Factoring Challenge: RSA-420 III 0 10638 98 RSA Factoring Challenge: RSA-260 III 0 10638 99 Kaskade-S/T - Part 4 II 0 1000 100 Dorabella X 0 var 101 D'Agapeyeff X 0 var 102 World Record Challenge: Break 65 Bits of AES III 0 10000 103 Twelve-Year-Old Murder Case X 0 var 104 The third ENIGMA M4 message X 0 var 105 Double Columnar Transposition X 0 var 106 Notes of an Italian Soldier X 0 var 107 Digital Signatures: DSA with Medium Fields III 0 10101 108 Unknown Author X 0 var 109 Substitution Cipher with Non-Prefix Codes III 0 10000 110 Kryptos X 0 var 111 Recovering the Private Key in the Fully Homomorphic Encryption Scheme III 0 10000 112 RSA Factoring Challenge: RSA-210 II 0 1064 113 RSA Factoring Challenge: RSA-270 III 0 10638 114 Sigaba Part 2 III 0 10000 115 RSA Factoring Challenge: RSA-896 III 0 10638 116 RSA Factoring Challenge: RSA-280 III 0 10638 117 RSA Factoring Challenge: RSA-290 III 0 10638 118 RSA Factoring Challenge: RSA-250 III 0 10638 119 RSA Factoring Challenge: RSA-240 III 0 10638 120 RSA Factoring Challenge: RSA-704 II 0 1064 121 RSA Factoring Challenge: RSA-220 II 0 1064 122 RSA Factoring Challenge: RSA-230 II 0 1064 123 RSA Factoring Challenge: RSA-232 III 0 10638 124 RSA Factoring Challenge: RSA-300 III 0 10638

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