MysteryTwister - The Cipher Challenge Contest

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Challenge list

Level	Name	Solves
1	ADFGVX — Part 1	153
X	Concealed Messages — Vigenère's Night Sky	16
1	A disguised code	103
1	A hidden word — Part 2	147
1	Alberti Challenge — Part 1	202
1	A Secret Message from Castle Mansfeld	139
1	An Invisible Message	74
1	An 'unhearable' message	46
1	Autokey Cipher	252
1	Number Sequence — Part 9	156
1	Caesar Encryption	1678
1	ADFGVX — Part 2	143
1	Cryptanalysis Hacking Puzzles — Part 1	47
1	Assembly Point – Part 1	27
1	Cryptanalysis Hacking Puzzles — Part 2	271
1	Bigram Substitution – Part 1 (Tutorial)	77
1	ECDH-Key Exchange for Beginners	115
1	Enigma Messages	102
1	Enigma Messages with Repeated Letters — Part 4	97
1	Enigma Messages with Repeated Letters — Part 5	97
1	Factorization Cipher — Part 1	571
1	Heartbleed — Part 2	60
1	Grille Cipher	558
1	Image Noise	206
3	RSA Factoring Challenge: RSA-330	0
1	Music Code — Part 1	45
1	Kaskade-S/T — Part 1	122
1	Letter to the Templars — Part 2	935
1	Merkle-Hellman Knapsack Challenge - Part 1	107
1	Modular Sequences	112
1	Monoalphabetic Substitution	597
1	Molehunt (Part 2/3)	164
1	Monoalphabetic substitution with camouflage — Part 1	75
1	Monoalphabetic substitution with camouflage — Part 4	55
1	¿No Hablas Español? No problemo!	196
1	New Year's Greetings — Part 4	52
1	New Year's Greetings — Part 1	72
1	New Year's Greetings — Part 2	60
1	New Year's Greetings — Part 3	56
1	News from Castle Mansfeld	65
1	Number Sequence — Part 4	976
1	Number Sequence — Part 7	114
1	Number Sequence — Part 5	136
1	Number Sequence — Part 6	203
1	Number Sequence — Part 3	1187
1	Number Sequence — Part 2	2440
1	Pigpen with a twist — Part 1	171
1	Playfair Encryption	149
1	The Syllabary Cipher – Part 1	365
1	Snow White and the seven dwarfs	327
1	The Book Code: A Challenge for Bookworms	169
1	Polyhomophonic Substitution — Part 1	66
1	Turing Bombe Enigma I	88
1	Zodiac Cipher	115
2	A really long number sequence	129
2	A Cloaked Substitution Cipher — Part 1	26
2	Advent Challenge — Part 4	54
2	Advent Challenge — Part 3	58
2	AES ECB Wrong Encoding	33
2	ASAC — A Strong(er) ADFGVX Cipher — Part 1	23
3	RSA Factoring Challenge: RSA-430	0
3	RSA Factoring Challenge: RSA-480	0
3	Substitution Cipher with Non-Prefix Codes	1
2	BCR code (Book-Caesar-RSA)	83
2	ASAC — A Strong(er) ADFGVX Cipher — Part 4	0
2	Christmas Challenge 2019: Differential Cryptanalysis — Part 1	5
2	Broadcasting and low exponent — RSA Attack	267
2	Cascading Encryption — Part 2/3	25
2	Cipher ID — Part 1	21
2	Differential Cryptanalysis — Part 2	5
2	Double Column Transposition — Part 3	45
3	The SIGABA Challenge — Part 3	8
2	CMEA 1	48
2	Double-Column Transposition/Granit — Part 2	0
2	Double Column Transposition — Part 2	52
2	Extended Handycipher — Part 1	4
2	Elliptic Boogaloo – Part 1	6
2	Double Column Transposition — Part 5	12
2	Extended Handycipher — Part 2	4
2	Enigma Part 2	101
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	RSA Factoring Challenge: RSA-220	47
2	Twisting the Rubik's Cube	11
2	Homophonic Encryption — Part 3	47
2	Polyhomophonic Substitution — Part 3	21
2	Kaskade-S/T — Part 5	10
2	Kaskade-S/T — Part 4	0
2	Keyshanc — Part 1	53
2	Keyshanc — Part 2	44
2	Kaskade-S/T — Part 3	39
2	Kaskade-S/T — Part 2	59
2	Homophonic Encryption — Part 4	46
2	Kaskade-S/T — Part 6 (RansomKaskade Part 1)	7
2	Lunchtime Attack on the Fully Homomorphic Encryption Scheme	50
2	Monoalphabetic substitution with camouflage — Part 2	59
2	Monoalphabetic substitution with camouflage — Part 3	55
2	Monoalphabetic Substitution with Camouflage — Part 5	38
2	M-138 — Part 4	36
2	Lightweight Introduction to Lattices — Part 3	48
2	Monoalphabetic Substitution with Nostradamus Flavor	46
2	ORYX Stream Cipher Part II	51
2	Merkle-Hellman Knapsack Challenge — Part 2	20
2	Not-so-Secret Message from Malawi — Part II (ECC)	47
2	Pigpen with a twist — Part 2	50
2	Smartcard RSA	83
2	Polyhomophonic Substitution — Part 2	36
2	Purple 1	22
2	"The Road" — Part 1	9
2	RSA Factoring Challenge: RSA-230	40
2	RSA Factoring Challenge: RSA-704	69
2	RSA Factoring Challenge: RSA-210	64
2	RSA: Two different keys — same ciphertext	168
2	SIGABA CSP-2900 — Part 1	2
2	SIGABA CSP-889 — Part 2	2
2	Sigaba Part 1	18
2	SIGABA CSP-2900 — Part 2	2
2	Summer Job	70
2	The Hutton Cipher – Part 5	0
2	Spirale — Part 2	8
2	Spirale — Part 3	6
2	The Fialka Challenge – Part 3	6
2	The Hutton Cipher – Part 2	31
2	The Einstein Enigma	71
2	The Fialka Challenge – Part 1	8
2	The Fialka Challenge – Part 2	6
2	The Josse Challenge – Part 2	19
3	Elliptic Boogaloo – Part 2	5
2	Hilly — Part 2	1
2	The Hutton Cipher – Part 4	4
2	"The Road" — Part 3	0
2	The SIGABA Challenge — Part 1	14
2	"The Road" — Part 2	2
2	The Syllabary Cipher – Part 4	15
2	The SZ42 Challenge — Part 1	22
2	The SIGABA Challenge — Part 2	12
2	Weakened Handycipher — Part 3	16
2	The SZ42 Challenge — Part 3	18
2	The SZ42 Challenge — Part 10	8
2	The SZ42 Challenge — Part 11	4
2	The SZ42 Challenge — Part 13	10
2	The SZ42 Challenge — Part 8	16
2	The SZ42 Challenge — Part 5	18
2	The SZ42 Challenge — Part 6	16
2	The SZ42 Challenge — Part 7	15
2	The T52 Sturgeon Challenge — Part 11	11
2	The T52 Sturgeon Challenge — Part 12	10
2	The T52 Sturgeon Challenge — Part 8	12
2	The T52 Sturgeon Challenge — Part 7	9
2	Weakened ElsieFour — Part 1	6
2	Weakened ElsieFour — Part 3	4
2	The T52 Sturgeon Challenge — Part 9	10
2	Typex — Part 1	31
2	Typex — Part 2	25
2	Unconcealed RSA messages	58
2	Weakened ElsieFour — Part 2	1
2	Enigma Part 1	141
2	The Syllabary Cipher – Part 3	25
2	Weakened Granit — Part 3	0
2	Weakened Handycipher — Part 4	7
2	Homophonic Encryption — Part 1	55
2	Weakened Handycipher — Part 2	16
2	Wheatstone Cryptograph — Part 2	22
2	Weakened Handycipher — Part 5	7
3	Double Column Transposition Reloaded — Part 3	0
3	Digital Signatures: DSA with Medium Fields	0
3	World Record Challenge: Break 65 Bits of AES	0
3	Elliptic Boogaloo – Part 3	5
3	Double Column Transposition Reloaded — Part 1	0
3	ElsieFour — Part 1	4
3	Extended Handycipher — Part 5	4
3	Handycipher — Part 5	6
3	Extended Handycipher — Part 6	3
3	Handycipher — Part 4	5
3	Handycipher — Part 6	6
1	A hidden word	1001
3	Handycipher — Part 8	3
3	Double Column Transposition Reloaded — Part 2	0
3	ORYX Stream Cipher — Part 4c	0
3	RSA Factoring Challenge: RSA-2048	0
3	Handycipher — Part 9	3
3	RSA Factoring Challenge: RSA-1536	0
3	ORYX Stream Cipher — Part 4d	0
3	Recovering the Private Key in the Fully Homomorphic Encryption Scheme	0
3	RSA Factoring Challenge: RSA-309	0
3	RSA Factoring Challenge: RSA-250	28
3	RSA Factoring Challenge: RSA-310	0
3	RSA Factoring Challenge: RSA-320	0
3	RSA Factoring Challenge: RSA-350	0
3	RSA Factoring Challenge: RSA-270	0
3	RSA Factoring Challenge: RSA-360	0
3	RSA Factoring Challenge: RSA-370	0
3	RSA Factoring Challenge: RSA-280	0
3	RSA Factoring Challenge: RSA-410	0
3	RSA Factoring Challenge: RSA-420	0
3	RSA Factoring Challenge: RSA-400	0
3	RSA Factoring Challenge: RSA-300	0
3	RSA Factoring Challenge: RSA-460	0
3	RSA Factoring Challenge: RSA-470	0
3	RSA Factoring Challenge: RSA-450	0
3	RSA Factoring Challenge: RSA-340	0
3	RSA Factoring Challenge: RSA-617	0
3	RSA Factoring Challenge: RSA-896	0
3	RSA Factoring Challenge: RSA-500	0
3	RSA Factoring Challenge: RSA-490	0
3	Sigaba Part 2	5
3	RSA Factoring Challenge: RSA-390	0
3	RSA Factoring Challenge: RSA-440	0
3	RSA with Special d	26
3	SIGABA CSP-889 — Part 3	2
3	The Heavy T52 Sturgeon Challenge — Part 7	9
3	The Heavy T52 Sturgeon Challenge — Part 9	3
3	Vinaigrette Signature Scheme	6
3	The SIGABA Challenge — Part 5	3
3	The SIGABA Challenge — Part 6	1
X	Dorabella	0
X	Catherine of Aragon's Letter to King Ferdinand, her Father (1509)	2
X	D'Agapeyeff	0
X	Double Column Transposition	2
1	Beaver Code	1398
X	Ku Klux Klan	45
X	Spanish Strip Cipher — Part 3	0
X	The Vatican Challenge — Part 1	3
3	The Heavy T52 Sturgeon Challenge — Part 6	6
X	Notes of an Italian Soldier	4
3	The SIGABA Challenge — Part 4	6
X	The Vatican Challenge — Part 3	0
3	The Heavy T52 Sturgeon Challenge — Part 8	0
X	Twelve-Year-Old Murder Case	0
1	Original Caesar Cipher	3564
1	Playfair with hints about the grid	140
2	Cracking SHA1-Hashed Passwords	704
1	Multilingual Monoalphabetic Substitution	91
1	Nils away on travel	201
1	Number Sequence	4957
1	Number Sequence — Part 8	491
2	Factorization Cipher — Part 2	162
X	The Vatican Challenge — Part 2	3
1	From Russia with Love	335
2	Hybrid Encryption I	196
2	Letter to the Templars — Part 3	782
3	Extended Handycipher — Part 4	4
2	Hill Cipher	16
1	Classical Ciphers^3	208
1	Enigma Messages with Repeated Letters — Part 1	210
2	Advent-Challenge — Part 2	68
2	The Syllabary Cipher – Part 2	38
1	Find the right route — Part 3	46
X	Kryptos	0
1	Letter to the Templars — Part 1	1170
1	M-138 — Part 1	256
2	Brute-Force-Attack on Triple-DES with Reduced Key Space	262
2	M-138 — Part 3	74
2	Spanish Strip Cipher — Part 2	37
1	Molehunt (Part 1/3)	176
2	Not-so-Secret Message from Malawi — Part I (RSA)	225
2	AES key — encoded in the machine readable zone of a European ePassport	108
2	Cascading Encryption — Part 3/3	16
1	A modified homophonic cipher with reduced alphabets — Part 2	378
1	Hill Cipher with Sudoku Key	126
1	Trifid Cipher	146
1	Recycled One-Time Pad	83
2	Homophonic Encryption — Part 2	49
2	Polyphonic Substitution Cipher — Part 2	26
1	Affine Codes / Modulo Arithmetic with N / Extended Euclid	672
1	Enigma Combinatorics	123
2	Unusual encryption using a diophantine equation	71
3	ORYX Stream Cipher — Part 4b	2
1	The Last Note	118
2	ORYX Stream Cipher Part I	83
1	Enigma Messages with Repeated Letters — Part 3	106
1	Enigma Messages with Repeated Letters — Part 2	107
1	Find the right route — Part 2	48
2	Music Code — Part 2	44
2	Polyphonic Substitution Cipher — Part 1	29
2	Trendy Messenger	41
2	The Josse Challenge – Part 3	16
2	Akelarre Part 1	11
1	Heartbleed — Part 1	90
2	The SZ42 Challenge — Part 2	22
2	The T52 Sturgeon Challenge — Part 2	22
2	The SZ42 Challenge — Part 9	15
1	Letter from the Alleged Countess Julie von Ortenburg	189
1	Modified Caesar Cipher	267
2	ASAC — A Strong(er) ADFGVX Cipher — Part 2	2
1	Lightweight Introduction to Lattices — Part 1	76
1	Weakened Granit — Part 1	55
3	CMEA 2	31
1	Post-Quantum Cryptography: Unbalanced Oil and Vinegar System — Part 1	108
3	RSA Factoring Challenge: RSA-240	29
3	RSA Factoring Challenge: RSA-232	29
1	Wheatstone Cryptograph — Part 1	141
2	Bigram Substitution – Part 2	9
2	The T52 Sturgeon Challenge — Part 6	10
3	The Heavy T52 Sturgeon Challenge — Part 5	8
2	A Cloaked Substitution Cipher — Part 2	24
2	Alice's Birthday Party (Part 2)	352
2	ASAC — A Strong(er) ADFGVX Cipher — Part 5	0
2	Lattice Part 1	39
2	Double Column Transposition — Part 4	59
1	Cascading Encryption — Part 1/3	85
3	Handycipher — Part 3	8
1	A modified homophonic cipher with reduced alphabets — Part 1	435
1	Advent-Challenge — Part 1	630
1	Double Columnar Transposition	134
1	Find the right route — Part 1	121
1	How do you become a big cryptographer?	261
2	Fastest in the West	45
1	Lightweight Introduction to Lattices — Part 2	55
2	M-138 — Part 2	154
2	Modified Vigenère Cipher	15
2	Molehunt (Part 3/3)	93
1	Reserve Hand Procedure — Part 1	212
1	Number Sequence — Part 10	154
1	One-Time Pad with Flaws	340
1	Strange Message from Thessaloniki	55
2	ASAC — A Strong(er) ADFGVX Cipher — Part 3	1
2	Breaking a Filter Generator	26
2	Alberti Challenge — Part 2	14
2	Alice's Birthday Party (Part 1)	353
2	Double-Column Transposition/Granit — Part 1	0
2	Double-Column Transposition/Granit — Part 3	0
2	Double Column Transposition — Part 1	38
2	The Lady Liz Challenge	0
2	Heartbleed — Part 3	33
2	Monoalphabetic Substitution with Camouflage — Part 6	2
2	Pigpen with a twist — Part 3	49
2	PX-1000 Encryption – Part 1	11
2	Spanish Strip Cipher — Part 1	38
2	The Hutton Cipher – Part 1	29
2	Spirale — Part 1	8
2	Partial Key Exposure with RSA — Part 1	115
2	The SZ42 Challenge — Part 12	11
2	The SZ42 Challenge — Part 4	19
2	Weakened Granit — Part 2	0
2	Post-Quantum Cryptography: Unbalanced Oil and Vinegar System — Part 2	13
2	SIGABA CSP-889 — Part 1	2
2	The Josse Challenge – Part 1	19
3	Handycipher — Part 7	2
2	The LoRa Cipher: Logic Randomness — Part 1	30
3	RSA Factoring Challenge: RSA-290	0
3	RSA Factoring Challenge: RSA-380	0
2	The Syllabary Cipher – Part 5	15
3	SIGABA CSP-2900 — Part 3	2
2	The T52 Sturgeon Challenge — Part 1	23
3	Spirale — Part 4	0
3	The Heavy T52 Sturgeon Challenge — Part 1	3
X	The Vatican Challenge — Part 5	0
X	Unknown Author	2
2	The T52 Sturgeon Challenge — Part 10	9
2	The T52 Sturgeon Challenge — Part 5	10
3	RSA Factoring Challenge: RSA-1024	0
2	Handycipher made in love — Part 2	25
2	Handycipher — Part 1	7
2	ORYX Stream Cipher — Part 4a	12
2	New Year's Greetings — Part 5	19
2	ORYX Stream Cipher — Part 3 (revised)	31
2	The T52 Sturgeon Challenge — Part 3	18
2	The T52 Sturgeon Challenge — Part 4	16
2	Weakened Handycipher — Part 6	7
3	A Heavy SZ42 Challenge – Part 14	0
X	Beale Ciphers	1
2	Weakened Handycipher — Part 1	18
3	The Heavy T52 Sturgeon Challenge — Part 2	4
3	The Heavy T52 Sturgeon Challenge — Part 3	3
3	The Heavy T52 Sturgeon Challenge — Part 4	7
3	RSA Factoring Challenge: RSA-260	0
X	The third ENIGMA M4 message	0
X	The Vatican Challenge — Part 4	1