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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 718 100 2 Original Caesar Cipher I 290 100 3 Caesar Encryption I 214 100 4 Monoalphabetic Substitution I 164 100 5 Number Sequence - Part 2 I 126 100 6 Homophonic Encryption Part 1 I 89 100 7 Homophonic Encryption Part 2 I 83 100 8 One-Time Pad with Flaws I 72 100 9 Affine Codes / Modulo Arithmetic with N / Extended Euclid I 65 101 10 Alice's Birthday Party (Part 1) II 57 1000 11 Alice's Birthday Party (Part 2) II 56 1000 12 Letter from the Alleged Countess Julie von Ortenburg I 53 100 13 A Secret Message from Castle Mansfeld I 47 100 14 Classical Ciphers^3 I 47 100 15 Factorization Cipher - Part 1 I 47 101 16 Brute-Force-Attack on Triple-DES with Reduced Key Space II 42 1000 17 Cracking SHA1-Hashed Passwords II 40 1000 18 Grille Cipher I 37 101 19 Not-so-Secret Message from Malawi – Part I (RSA) II 35 1000 20 Hybrid Encryption I II 33 1000 21 Enigma Part 1 II 33 1000 22 Molehunt (Part 1/3) I 31 100 23 Molehunt (Part 2/3) I 31 100 24 Kaskade-S/T – Part 1 I 31 100 25 Modified Caesar Cipher I 30 101 26 Broadcasting and low exponent - RSA-Attack II 30 1000 27 Zodiac Cipher I 26 100 28 Enigma Combinatorics I 26 100 29 Pigpen with a twist - Part 1 I 25 101 30 A really long number sequence II 23 1010 31 Post-Quantum Cryptography: Unbalanced Oil and Vinegar System - Part 1 I 23 100 32 ORYX Stream Cipher Part I II 22 1000 33 ADFGVX - Part 2 I 22 101 34 RSA: Two different keys - same ciphertext II 22 1010 35 Molehunt (Part 3/3) II 20 1000 36 ADFGVX - Part 1 I 18 101 37 Playfair Encryption I 16 100 38 Enigma Part 2 II 16 1000 39 Smartcard RSA II 16 1000 40 Lunchtime Attack on the Fully Homomorphic Encryption Scheme II 14 1000 41 Factorization Cipher - Part 2 II 14 1010 42 Kaskade-S/T – Part 2 II 14 1000 43 An Invisible Message I 14 101 44 Turing Bombe Enigma I I 13 101 45 ORYX Stream Cipher Part II II 12 1000 46 Double Columnar Transposition I 12 101 47 Unusual encryption using a diophantine equation II 12 1010 48 Lattice Part 1 II 12 1000 49 Music Code - Part 1 I 10 100 50 Not-so-Secret Message from Malawi – Part II (ECC) II 10 1000 51 Kaskade-S/T – Part 3 II 9 1000 52 AES key - encoded in the machine readable zone of a European ePassport II 9 1042 53 Factorization Cipher - Part 3 II 8 1031 54 Music Code - Part 2 II 8 1000 55 Monoalphabetic substitution with camouflage - Part 2 II 7 1020 56 Monoalphabetic substitution with camouflage - Part 3 II 7 1020 57 Unconcealed RSA messages II 6 1010 58 Monoalphabetic substitution with camouflage - Part 4 I 6 102 59 Pigpen with a twist - Part 2 II 6 1010 60 Pigpen with a twist - Part 3 II 6 1010 61 CMEA 1 II 5 1000 62 RSA with Special d III 5 10000 63 CMEA 2 III 4 10000 64 Ku Klux Klan X 4 var 65 Monoalphabetic substitution with camouflage - Part 1 I 4 101 66 Post-Quantum Cryptography: Unbalanced Oil and Vinegar System - Part 2 II 3 1000 67 Akelarre Part 1 II 2 1000 68 Sigaba Part 1 II 2 1000 69 Purple 1 II 2 1000 70 Kaskade-S/T - Part 5 II 1 1000 71 Beale Ciphers X 1 var 72 Dorabella X 0 var 73 D'Agapeyeff X 0 var 74 Unknown Author X 0 var 75 Kaskade-S/T - Part 4 II 0 1000 76 Twelve-Year-Old Murder Case X 0 var 77 Recovering the Private Key in the Fully Homomorphic Encryption Scheme III 0 10000 78 Sigaba Part 2 III 0 10000 79 Substitution Cipher with Non-Prefix Codes III 0 10000 80 World Record Challenge: Break 65 Bits of AES III 0 10000 81 Double Columnar Transposition X 0 var 82 Kryptos X 0 var 83 Notes of an Italian Soldier X 0 var 84 Digital Signatures: DSA with Medium Fields III 0 10101 85 The third ENIGMA M4 message X 0 var

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