MysteryTwister - The Cipher Challenge Contest

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Challenge list

Level	Name	Solves
1	A disguised code	99
1	A hidden word — Part 2	146
1	A modified homophonic cipher with reduced alphabets — Part 2	377
1	ADFGVX — Part 1	137
1	A Secret Message from Castle Mansfeld	139
1	Alberti Challenge — Part 1	197
1	An 'unhearable' message	46
1	An Invisible Message	74
1	Autokey Cipher	248
1	Number Sequence — Part 9	154
1	ADFGVX — Part 2	141
1	Bigram Substitution – Part 1 (Tutorial)	74
1	Caesar Encryption	1671
1	Cryptanalysis Hacking Puzzles — Part 1	45
1	Cryptanalysis Hacking Puzzles — Part 2	269
1	Classical Ciphers^3	208
1	ECDH-Key Exchange for Beginners	114
1	Enigma Messages	99
1	Enigma Messages with Repeated Letters — Part 3	106
1	Enigma Messages with Repeated Letters — Part 1	209
1	Enigma Messages with Repeated Letters — Part 4	97
1	Enigma Messages with Repeated Letters — Part 5	97
1	Factorization Cipher — Part 1	568
1	Find the right route — Part 2	48
1	Grille Cipher	556
1	Heartbleed — Part 2	60
1	Image Noise	206
1	Heartbleed — Part 1	90
1	Kaskade-S/T — Part 1	121
1	Letter to the Templars — Part 2	932
1	Lightweight Introduction to Lattices — Part 1	76
1	M-138 — Part 1	255
1	Merkle-Hellman Knapsack Challenge - Part 1	106
1	Modular Sequences	112
1	Monoalphabetic Substitution	597
1	Molehunt (Part 2/3)	164
1	Monoalphabetic substitution with camouflage — Part 1	74
1	Monoalphabetic substitution with camouflage — Part 4	55
1	¿No Hablas Español? No problemo!	196
1	New Year's Greetings — Part 1	70
1	New Year's Greetings — Part 3	55
1	New Year's Greetings — Part 4	52
1	News from Castle Mansfeld	65
1	New Year's Greetings — Part 2	58
1	Music Code — Part 1	45
1	Number Sequence — Part 3	1183
1	Number Sequence — Part 4	972
1	Number Sequence — Part 5	135
1	Number Sequence — Part 6	200
1	Number Sequence — Part 7	114
1	Number Sequence — Part 2	2431
1	Pigpen with a twist — Part 1	171
1	Playfair Encryption	147
1	The Syllabary Cipher – Part 1	361
1	Polyhomophonic Substitution — Part 1	66
1	Snow White and the seven dwarfs	327
1	The Book Code: A Challenge for Bookworms	169
1	The Last Note	118
1	Turing Bombe Enigma I	87
1	Zodiac Cipher	115
1	Weakened Granit — Part 1	55
2	A Cloaked Substitution Cipher — Part 1	25
2	A really long number sequence	129
2	Advent Challenge — Part 3	56
2	Advent Challenge — Part 4	52
2	AES ECB Wrong Encoding	32
2	A Cloaked Substitution Cipher — Part 2	23
2	Akelarre Part 1	11
2	Alice's Birthday Party (Part 2)	351
2	ASAC — A Strong(er) ADFGVX Cipher — Part 1	21
2	ASAC — A Strong(er) ADFGVX Cipher — Part 2	1
2	ASAC — A Strong(er) ADFGVX Cipher — Part 4	0
2	ASAC — A Strong(er) ADFGVX Cipher — Part 5	0
2	BCR code (Book-Caesar-RSA)	82
2	Christmas Challenge 2019: Differential Cryptanalysis — Part 1	5
2	Bigram Substitution – Part 2	7
2	Broadcasting and low exponent — RSA Attack	266
2	Cascading Encryption — Part 2/3	25
2	Handycipher — Part 1	7
2	CMEA 1	48
2	Differential Cryptanalysis — Part 2	5
2	Homophonic Encryption — Part 4	45
2	Double-Column Transposition/Granit — Part 2	0
2	Double Column Transposition — Part 2	50
2	Double Column Transposition — Part 3	43
2	Double Column Transposition — Part 5	11
2	Extended Handycipher — Part 2	4
2	Enigma Part 2	100
2	Extended Handycipher — Part 1	4
2	Elliptic Boogaloo – Part 1	6
2	Extended Handycipher — Part 3	4
2	Factorization Cipher — Part 3	104
2	Flawed Usage of a OTP Cipher by the BND	22
2	Handycipher made in love — Part 1	31
2	Handycipher — Part 10	1
2	Handycipher — Part 2	9
2	The Hutton Cipher – Part 3	4
2	Hilly — Part 1	10
2	Holographic Encryption — Part 1	8
2	Holographic Encryption — Part 2	3
2	Homophonic Encryption — Part 3	46
2	Kaskade-S/T — Part 6 (RansomKaskade Part 1)	7
2	Kaskade-S/T — Part 2	59
2	Kaskade-S/T — Part 3	39
2	Kaskade-S/T — Part 4	0
2	Kaskade-S/T — Part 5	10
2	Keyshanc — Part 2	43
2	Keyshanc — Part 1	53
2	Lattice Part 1	39
2	Lunchtime Attack on the Fully Homomorphic Encryption Scheme	50
2	M-138 — Part 4	35
2	Lightweight Introduction to Lattices — Part 3	46
2	Monoalphabetic Substitution with Camouflage — Part 5	36
2	Monoalphabetic substitution with camouflage — Part 2	59
2	Monoalphabetic substitution with camouflage — Part 3	55
2	M-138 — Part 2	154
2	Merkle-Hellman Knapsack Challenge — Part 2	19
2	Not-so-Secret Message from Malawi — Part II (ECC)	46
2	Monoalphabetic Substitution with Nostradamus Flavor	45
2	Molehunt (Part 3/3)	93
2	Monoalphabetic Substitution with Camouflage — Part 6	2
2	ORYX Stream Cipher — Part 4a	12
2	ORYX Stream Cipher Part II	50
2	New Year's Greetings — Part 5	18
2	Pigpen with a twist — Part 2	49
2	Polyhomophonic Substitution — Part 3	21
2	ORYX Stream Cipher — Part 3 (revised)	31
2	Polyhomophonic Substitution — Part 2	35
2	Post-Quantum Cryptography: Unbalanced Oil and Vinegar System — Part 2	13
2	Purple 1	22
2	RSA Factoring Challenge: RSA-210	64
2	RSA Factoring Challenge: RSA-704	69
2	RSA: Two different keys — same ciphertext	168
2	RSA Factoring Challenge: RSA-230	40
2	RSA Factoring Challenge: RSA-220	47
2	SIGABA CSP-2900 — Part 1	2
2	SIGABA CSP-2900 — Part 2	2
2	SIGABA CSP-889 — Part 2	2
2	Sigaba Part 1	18
2	Summer Job	69
2	Spirale — Part 2	8
2	Spirale — Part 3	6
2	The Hutton Cipher – Part 5	0
2	The Einstein Enigma	70
2	The Fialka Challenge – Part 2	6
2	The Fialka Challenge – Part 1	7
2	The Fialka Challenge – Part 3	6
2	The Hutton Cipher – Part 2	30
2	Hilly — Part 2	1
2	The Hutton Cipher – Part 4	4
2	The Josse Challenge – Part 2	19
3	Elliptic Boogaloo – Part 2	5
2	"The Road" — Part 1	9
2	"The Road" — Part 2	2
2	"The Road" — Part 3	0
2	The SIGABA Challenge — Part 1	13
2	The Syllabary Cipher – Part 3	24
2	The Syllabary Cipher – Part 4	15
2	The SZ42 Challenge — Part 1	20
2	The SZ42 Challenge — Part 11	4
2	The SZ42 Challenge — Part 13	10
2	The SZ42 Challenge — Part 3	17
2	The SZ42 Challenge — Part 5	17
2	The SZ42 Challenge — Part 7	14
2	The SZ42 Challenge — Part 8	15
2	The SZ42 Challenge — Part 6	15
2	The T52 Sturgeon Challenge — Part 1	21
2	The T52 Sturgeon Challenge — Part 11	10
2	The T52 Sturgeon Challenge — Part 12	10
2	The T52 Sturgeon Challenge — Part 3	16
2	The T52 Sturgeon Challenge — Part 7	8
2	Weakened ElsieFour — Part 3	4
2	The T52 Sturgeon Challenge — Part 9	9
2	Typex — Part 1	31
2	Typex — Part 2	25
2	Unconcealed RSA messages	58
2	Enigma Part 1	140
2	Weakened ElsieFour — Part 2	1
2	Weakened Granit — Part 3	0
2	Weakened Handycipher — Part 1	18
2	Weakened Handycipher — Part 4	7
2	Weakened Handycipher — Part 3	16
2	Weakened Handycipher — Part 5	7
2	Wheatstone Cryptograph — Part 2	20
3	A Heavy SZ42 Challenge – Part 14	0
3	Digital Signatures: DSA with Medium Fields	0
3	Double Column Transposition Reloaded — Part 2	0
3	Double Column Transposition Reloaded — Part 3	0
3	World Record Challenge: Break 65 Bits of AES	0
3	Double Column Transposition Reloaded — Part 1	0
3	Elliptic Boogaloo – Part 3	5
3	Extended Handycipher — Part 5	4
3	ElsieFour — Part 1	4
1	A hidden word	998
3	Handycipher — Part 6	6
3	Extended Handycipher — Part 6	3
3	Handycipher — Part 4	5
3	Handycipher — Part 5	6
3	Handycipher — Part 8	3
3	Handycipher — Part 9	3
3	ORYX Stream Cipher — Part 4c	0
3	ORYX Stream Cipher — Part 4d	0
3	ORYX Stream Cipher — Part 4b	2
3	RSA Factoring Challenge: RSA-1536	0
3	RSA Factoring Challenge: RSA-2048	0
3	Recovering the Private Key in the Fully Homomorphic Encryption Scheme	0
3	RSA Factoring Challenge: RSA-280	0
3	RSA Factoring Challenge: RSA-260	0
3	RSA Factoring Challenge: RSA-250	28
3	RSA Factoring Challenge: RSA-309	0
3	RSA Factoring Challenge: RSA-310	0
3	RSA Factoring Challenge: RSA-320	0
3	RSA Factoring Challenge: RSA-270	0
3	RSA Factoring Challenge: RSA-350	0
3	RSA Factoring Challenge: RSA-360	0
3	RSA Factoring Challenge: RSA-370	0
3	RSA Factoring Challenge: RSA-300	0
3	RSA Factoring Challenge: RSA-400	0
3	RSA Factoring Challenge: RSA-410	0
3	RSA Factoring Challenge: RSA-420	0
3	RSA Factoring Challenge: RSA-340	0
3	RSA Factoring Challenge: RSA-450	0
3	RSA Factoring Challenge: RSA-460	0
3	RSA Factoring Challenge: RSA-470	0
3	RSA Factoring Challenge: RSA-390	0
3	RSA Factoring Challenge: RSA-500	0
3	RSA Factoring Challenge: RSA-617	0
3	RSA Factoring Challenge: RSA-896	0
3	RSA Factoring Challenge: RSA-430	0
3	RSA Factoring Challenge: RSA-440	0
3	RSA Factoring Challenge: RSA-490	0
3	Sigaba Part 2	5
3	RSA with Special d	26
3	SIGABA CSP-889 — Part 3	2
3	The Heavy T52 Sturgeon Challenge — Part 2	4
3	Substitution Cipher with Non-Prefix Codes	1
3	The Heavy T52 Sturgeon Challenge — Part 9	3
3	The Heavy T52 Sturgeon Challenge — Part 7	9
3	The Heavy T52 Sturgeon Challenge — Part 3	3
3	The SIGABA Challenge — Part 6	1
3	The SIGABA Challenge — Part 5	2
3	Vinaigrette Signature Scheme	5
1	Beaver Code	1391
X	Catherine of Aragon's Letter to King Ferdinand, her Father (1509)	2
X	D'Agapeyeff	0
X	Dorabella	0
X	Double Column Transposition	2
3	The Heavy T52 Sturgeon Challenge — Part 4	7
3	The Heavy T52 Sturgeon Challenge — Part 6	6
X	Notes of an Italian Soldier	4
X	Spanish Strip Cipher — Part 3	0
X	The Vatican Challenge — Part 1	3
3	The Heavy T52 Sturgeon Challenge — Part 8	0
3	The SIGABA Challenge — Part 4	5
X	The Vatican Challenge — Part 4	1
X	The Vatican Challenge — Part 3	0
X	Twelve-Year-Old Murder Case	0
1	Multilingual Monoalphabetic Substitution	90
1	Nils away on travel	200
1	Number Sequence	4941
1	Original Caesar Cipher	3548
1	Playfair with hints about the grid	139
2	Cracking SHA1-Hashed Passwords	679
1	Affine Codes / Modulo Arithmetic with N / Extended Euclid	669
1	Letter to the Templars — Part 1	1165
1	Number Sequence — Part 8	487
2	Factorization Cipher — Part 2	161
1	Enigma Combinatorics	123
1	From Russia with Love	334
1	Molehunt (Part 1/3)	176
2	Hill Cipher	16
2	Hybrid Encryption I	196
X	Ku Klux Klan	45
2	Letter to the Templars — Part 3	778
1	Find the right route — Part 3	46
2	Advent-Challenge — Part 2	66
2	The Syllabary Cipher – Part 2	38
1	Letter from the Alleged Countess Julie von Ortenburg	189
2	Partial Key Exposure with RSA — Part 1	114
2	Twisting the Rubik's Cube	11
X	Kryptos	0
X	The Vatican Challenge — Part 2	3
1	Wheatstone Cryptograph — Part 1	140
2	Brute-Force-Attack on Triple-DES with Reduced Key Space	252
2	M-138 — Part 3	73
2	Not-so-Secret Message from Malawi — Part I (RSA)	224
2	Spanish Strip Cipher — Part 2	35
1	Hill Cipher with Sudoku Key	126
1	Recycled One-Time Pad	82
1	Trifid Cipher	145
2	AES key — encoded in the machine readable zone of a European ePassport	94
2	Cascading Encryption — Part 3/3	16
2	Homophonic Encryption — Part 2	48
2	Polyphonic Substitution Cipher — Part 2	25
1	Post-Quantum Cryptography: Unbalanced Oil and Vinegar System — Part 1	107
2	ORYX Stream Cipher Part I	83
2	Unusual encryption using a diophantine equation	71
2	Handycipher made in love — Part 2	25
2	Music Code — Part 2	44
2	Polyphonic Substitution Cipher — Part 1	27
2	Smartcard RSA	83
2	The Josse Challenge – Part 1	19
2	The Josse Challenge – Part 3	16
2	The LoRa Cipher: Logic Randomness — Part 1	30
2	Trendy Messenger	40
2	The SZ42 Challenge — Part 2	20
2	The SZ42 Challenge — Part 9	14
2	The T52 Sturgeon Challenge — Part 2	20
2	Weakened ElsieFour — Part 1	6
2	The T52 Sturgeon Challenge — Part 4	14
3	CMEA 2	30
2	The T52 Sturgeon Challenge — Part 10	9
2	The T52 Sturgeon Challenge — Part 8	11
3	RSA Factoring Challenge: RSA-232	29
3	RSA Factoring Challenge: RSA-240	29
2	The SIGABA Challenge — Part 2	10
2	The SZ42 Challenge — Part 10	7
2	The T52 Sturgeon Challenge — Part 6	8
3	The Heavy T52 Sturgeon Challenge — Part 5	8
2	Weakened Handycipher — Part 6	7
3	The SIGABA Challenge — Part 3	6
X	Concealed Messages — Vigenère's Night Sky	16
1	A modified homophonic cipher with reduced alphabets — Part 1	434
1	Advent-Challenge — Part 1	626
1	Cascading Encryption — Part 1/3	85
2	Double Column Transposition — Part 4	58
3	Handycipher — Part 3	8
1	Double Columnar Transposition	134
1	Enigma Messages with Repeated Letters — Part 2	107
1	Find the right route — Part 1	119
1	How do you become a big cryptographer?	260
1	Lightweight Introduction to Lattices — Part 2	55
1	Modified Caesar Cipher	266
2	Fastest in the West	42
1	Number Sequence — Part 10	153
1	One-Time Pad with Flaws	339
1	Reserve Hand Procedure — Part 1	211
1	Strange Message from Thessaloniki	55
2	Alberti Challenge — Part 2	14
2	Alice's Birthday Party (Part 1)	352
2	ASAC — A Strong(er) ADFGVX Cipher — Part 3	0
2	Breaking a Filter Generator	25
2	Cipher ID — Part 1	20
2	Double-Column Transposition/Granit — Part 1	0
2	Double-Column Transposition/Granit — Part 3	0
2	Double Column Transposition — Part 1	36
2	Heartbleed — Part 3	33
2	Homophonic Encryption — Part 1	54
2	The Lady Liz Challenge	0
2	Modified Vigenère Cipher	14
2	Pigpen with a twist — Part 3	48
2	PX-1000 Encryption – Part 1	11
2	SIGABA CSP-889 — Part 1	2
2	Spanish Strip Cipher — Part 1	38
2	Spirale — Part 1	8
2	The Hutton Cipher – Part 1	28
2	The Syllabary Cipher – Part 5	15
2	The SZ42 Challenge — Part 12	11
2	The SZ42 Challenge — Part 4	18
2	The T52 Sturgeon Challenge — Part 5	8
2	Weakened Granit — Part 2	0
2	Weakened Handycipher — Part 2	16
3	Extended Handycipher — Part 4	4
3	Handycipher — Part 7	2
3	RSA Factoring Challenge: RSA-1024	0
3	RSA Factoring Challenge: RSA-290	0
3	RSA Factoring Challenge: RSA-330	0
3	RSA Factoring Challenge: RSA-380	0
3	RSA Factoring Challenge: RSA-480	0
3	SIGABA CSP-2900 — Part 3	2
3	Spirale — Part 4	0
3	The Heavy T52 Sturgeon Challenge — Part 1	3
X	Beale Ciphers	1
X	The third ENIGMA M4 message	0
X	The Vatican Challenge — Part 5	0
X	Unknown Author	2