MysteryTwister - The Cipher Challenge Contest

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Challenge list

Level	Name	Solves
1	Heartbleed — Part 1	90
1	A hidden word — Part 2	144
1	A modified homophonic cipher with reduced alphabets — Part 2	376
1	ADFGVX — Part 1	136
1	ADFGVX — Part 2	141
1	An Invisible Message	73
1	Advent-Challenge — Part 1	622
1	Beaver Code	1387
1	Alberti Challenge — Part 1	195
1	Autokey Cipher	244
1	ECDH-Key Exchange for Beginners	114
1	Cryptanalysis Hacking Puzzles — Part 1	43
1	An 'unhearable' message	46
1	Caesar Encryption	1664
1	Cryptanalysis Hacking Puzzles — Part 2	268
1	Double Columnar Transposition	133
1	Enigma Messages with Repeated Letters — Part 4	95
1	Enigma Messages	98
1	Enigma Messages with Repeated Letters — Part 2	104
1	Find the right route — Part 3	46
1	Grille Cipher	556
1	Classical Ciphers^3	206
1	Enigma Combinatorics	122
1	How do you become a big cryptographer?	260
1	Enigma Messages with Repeated Letters — Part 5	96
1	Image Noise	203
1	Hill Cipher with Sudoku Key	123
1	Number Sequence — Part 4	970
2	ASAC — A Strong(er) ADFGVX Cipher — Part 5	0
1	Factorization Cipher — Part 1	567
2	Alberti Challenge — Part 2	13
1	Modular Sequences	109
1	Find the right route — Part 2	48
1	Modified Caesar Cipher	265
1	New Year's Greetings — Part 2	57
1	Number Sequence — Part 10	152
1	Heartbleed — Part 2	60
1	Multilingual Monoalphabetic Substitution	90
1	Kaskade-S/T — Part 1	120
1	¿No Hablas Español? No problemo!	195
1	Number Sequence	4918
1	News from Castle Mansfeld	64
1	Number Sequence — Part 3	1179
1	Letter to the Templars — Part 2	931
1	Original Caesar Cipher	3536
1	Pigpen with a twist — Part 1	170
1	Playfair Encryption	144
1	Number Sequence — Part 9	153
2	AES ECB Wrong Encoding	29
1	Recycled One-Time Pad	81
1	Strange Message from Thessaloniki	54
2	Wheatstone Cryptograph — Part 2	20
1	Reserve Hand Procedure — Part 1	210
1	Molehunt (Part 2/3)	163
1	Snow White and the seven dwarfs	325
1	Lightweight Introduction to Lattices — Part 1	72
1	The Syllabary Cipher – Part 1	359
1	Turing Bombe Enigma I	86
1	Wheatstone Cryptograph — Part 1	138
2	Advent-Challenge — Part 2	67
1	Music Code — Part 1	45
1	Lightweight Introduction to Lattices — Part 2	50
2	Advent Challenge — Part 4	53
2	ASAC — A Strong(er) ADFGVX Cipher — Part 1	21
1	Monoalphabetic Substitution	596
1	M-138 — Part 1	253
1	Number Sequence — Part 2	2422
2	Alice's Birthday Party (Part 1)	351
1	Merkle-Hellman Knapsack Challenge - Part 1	106
2	BCR code (Book-Caesar-RSA)	82
1	Nils away on travel	198
2	Bigram Substitution – Part 2	8
1	Monoalphabetic substitution with camouflage — Part 4	55
1	Number Sequence — Part 7	114
2	Cascading Encryption — Part 3/3	16
2	Lattice Part 1	36
1	New Year's Greetings — Part 1	67
1	Number Sequence — Part 8	483
2	Homophonic Encryption — Part 3	46
2	Double-Column Transposition/Granit — Part 2	0
2	Double Column Transposition — Part 1	35
3	RSA Factoring Challenge: RSA-340	0
2	RSA Factoring Challenge: RSA-230	40
2	The Fialka Challenge – Part 1	7
2	Enigma Part 2	99
2	Merkle-Hellman Knapsack Challenge — Part 2	18
2	Brute-Force-Attack on Triple-DES with Reduced Key Space	251
2	Handycipher made in love — Part 2	25
2	Handycipher made in love — Part 1	31
2	Not-so-Secret Message from Malawi — Part I (RSA)	223
1	The Last Note	116
2	Heartbleed — Part 3	33
2	Kaskade-S/T — Part 3	39
1	Trifid Cipher	145
2	A Cloaked Substitution Cipher — Part 2	24
X	Unknown Author	2
2	Hybrid Encryption I	195
2	Advent Challenge — Part 3	57
2	AES key — encoded in the machine readable zone of a European ePassport	94
2	Keyshanc — Part 2	43
2	Partial Key Exposure with RSA — Part 1	114
2	Akelarre Part 1	11
2	SIGABA CSP-889 — Part 1	2
2	Monoalphabetic substitution with camouflage — Part 2	59
2	Monoalphabetic substitution with camouflage — Part 3	55
2	Monoalphabetic Substitution with Nostradamus Flavor	45
2	Spirale — Part 2	8
2	Breaking a Filter Generator	24
3	RSA Factoring Challenge: RSA-360	0
2	The SIGABA Challenge — Part 2	10
2	ASAC — A Strong(er) ADFGVX Cipher — Part 2	1
2	Pigpen with a twist — Part 2	50
2	Pigpen with a twist — Part 3	49
3	RSA Factoring Challenge: RSA-460	0
2	RSA Factoring Challenge: RSA-210	64
2	Weakened ElsieFour — Part 2	1
2	PX-1000 Encryption – Part 1	11
2	ASAC — A Strong(er) ADFGVX Cipher — Part 3	0
3	Extended Handycipher — Part 6	3
2	The Lady Liz Challenge	0
2	The T52 Sturgeon Challenge — Part 2	20
2	RSA: Two different keys — same ciphertext	168
3	RSA Factoring Challenge: RSA-1536	0
3	RSA Factoring Challenge: RSA-2048	0
2	Spirale — Part 3	6
2	Weakened Handycipher — Part 4	7
2	Weakened Handycipher — Part 5	7
2	The Fialka Challenge – Part 2	6
2	The Hutton Cipher – Part 4	4
3	A Heavy SZ42 Challenge – Part 14	0
X	The Vatican Challenge — Part 4	1
2	The Hutton Cipher – Part 3	4
1	A hidden word	992
1	Number Sequence — Part 5	134
3	RSA Factoring Challenge: RSA-310	0
2	"The Road" — Part 1	10
1	A modified homophonic cipher with reduced alphabets — Part 1	433
2	Double Column Transposition — Part 2	50
3	RSA Factoring Challenge: RSA-290	0
2	The Syllabary Cipher – Part 3	25
2	The Syllabary Cipher – Part 4	16
2	Typex — Part 2	25
2	Double Column Transposition — Part 3	42
2	Double Column Transposition — Part 4	57
2	The SZ42 Challenge — Part 12	11
2	Double Column Transposition — Part 5	12
2	The SZ42 Challenge — Part 11	4
2	Unconcealed RSA messages	57
2	Elliptic Boogaloo – Part 1	5
2	Extended Handycipher — Part 1	4
2	Extended Handycipher — Part 2	4
2	The SZ42 Challenge — Part 6	15
2	Factorization Cipher — Part 2	160
2	Fastest in the West	42
2	The SZ42 Challenge — Part 9	14
2	Alice's Birthday Party (Part 2)	350
3	The Heavy T52 Sturgeon Challenge — Part 9	3
2	Handycipher — Part 10	1
1	Affine Codes / Modulo Arithmetic with N / Extended Euclid	668
2	Extended Handycipher — Part 3	4
2	Trendy Messenger	40
2	Hill Cipher	15
3	RSA Factoring Challenge: RSA-350	0
2	A really long number sequence	129
2	Cipher ID — Part 1	20
3	Digital Signatures: DSA with Medium Fields	0
2	Hilly — Part 1	9
2	Hilly — Part 2	1
2	ORYX Stream Cipher Part II	50
2	Holographic Encryption — Part 2	3
3	RSA Factoring Challenge: RSA-617	0
2	Differential Cryptanalysis — Part 2	5
3	Handycipher — Part 6	6
3	Elliptic Boogaloo – Part 3	4
3	The Heavy T52 Sturgeon Challenge — Part 4	6
1	Cascading Encryption — Part 1/3	84
2	Kaskade-S/T — Part 2	59
2	The Fialka Challenge – Part 3	6
2	The T52 Sturgeon Challenge — Part 4	14
2	Kaskade-S/T — Part 4	0
2	Kaskade-S/T — Part 5	10
2	Weakened ElsieFour — Part 1	6
3	ORYX Stream Cipher — Part 4c	0
2	RSA Factoring Challenge: RSA-220	47
2	Keyshanc — Part 1	53
2	Holographic Encryption — Part 1	8
2	ORYX Stream Cipher Part I	83
X	Dorabella	0
3	Elliptic Boogaloo – Part 2	4
2	Letter to the Templars — Part 3	778
2	Lightweight Introduction to Lattices — Part 3	41
2	M-138 — Part 2	152
3	RSA Factoring Challenge: RSA-1024	0
2	Modified Vigenère Cipher	15
2	New Year's Greetings — Part 5	18
3	RSA Factoring Challenge: RSA-440	0
2	Not-so-Secret Message from Malawi — Part II (ECC)	45
2	The SZ42 Challenge — Part 3	17
3	RSA Factoring Challenge: RSA-500	0
2	The SZ42 Challenge — Part 10	7
3	RSA Factoring Challenge: RSA-490	0
2	The SZ42 Challenge — Part 7	14
2	The T52 Sturgeon Challenge — Part 1	21
3	SIGABA CSP-889 — Part 3	2
2	M-138 — Part 4	35
3	Substitution Cipher with Non-Prefix Codes	1
3	The Heavy T52 Sturgeon Challenge — Part 2	4
2	Cascading Encryption — Part 2/3	25
3	Spirale — Part 4	0
3	The Heavy T52 Sturgeon Challenge — Part 1	3
3	The Heavy T52 Sturgeon Challenge — Part 6	5
3	The Heavy T52 Sturgeon Challenge — Part 7	10
3	The Heavy T52 Sturgeon Challenge — Part 5	7
2	ORYX Stream Cipher — Part 4a	12
2	Polyhomophonic Substitution — Part 2	35
X	Concealed Messages — Vigenère's Night Sky	16
X	D'Agapeyeff	0
3	RSA Factoring Challenge: RSA-300	0
X	Catherine of Aragon's Letter to King Ferdinand, her Father (1509)	2
2	Polyhomophonic Substitution — Part 3	21
2	Polyphonic Substitution Cipher — Part 1	27
2	Weakened Handycipher — Part 2	16
X	The Vatican Challenge — Part 3	0
1	A disguised code	95
2	Sigaba Part 1	18
X	Twelve-Year-Old Murder Case	0
2	The T52 Sturgeon Challenge — Part 5	8
3	CMEA 2	30
2	The Josse Challenge – Part 1	18
2	The T52 Sturgeon Challenge — Part 7	8
1	Letter from the Alleged Countess Julie von Ortenburg	188
2	The T52 Sturgeon Challenge — Part 8	11
2	Purple 1	22
1	Molehunt (Part 1/3)	174
1	New Year's Greetings — Part 3	53
2	SIGABA CSP-2900 — Part 2	2
1	Number Sequence — Part 6	198
1	Playfair with hints about the grid	135
2	Twisting the Rubik's Cube	10
2	SIGABA CSP-2900 — Part 1	2
1	Weakened Granit — Part 1	55
1	Zodiac Cipher	114
2	SIGABA CSP-889 — Part 2	2
2	Summer Job	69
2	The T52 Sturgeon Challenge — Part 9	9
2	CMEA 1	48
2	Double-Column Transposition/Granit — Part 3	0
2	Enigma Part 1	139
2	Spanish Strip Cipher — Part 1	38
2	Factorization Cipher — Part 3	103
2	Spanish Strip Cipher — Part 2	35
2	The Einstein Enigma	69
3	RSA Factoring Challenge: RSA-390	0
2	Kaskade-S/T — Part 6 (RansomKaskade Part 1)	6
2	Weakened Granit — Part 2	0
3	RSA Factoring Challenge: RSA-309	0
2	Monoalphabetic Substitution with Camouflage — Part 5	36
2	M-138 — Part 3	72
2	Molehunt (Part 3/3)	93
2	Music Code — Part 2	44
2	Polyphonic Substitution Cipher — Part 2	25
3	RSA Factoring Challenge: RSA-410	0
3	RSA Factoring Challenge: RSA-430	0
2	The Hutton Cipher – Part 5	0
2	The SZ42 Challenge — Part 2	20
X	The Vatican Challenge — Part 2	3
2	The Josse Challenge – Part 2	18
2	The SZ42 Challenge — Part 1	20
2	Unusual encryption using a diophantine equation	71
2	The T52 Sturgeon Challenge — Part 6	8
2	Typex — Part 1	31
2	The T52 Sturgeon Challenge — Part 11	10
2	The T52 Sturgeon Challenge — Part 12	10
2	"The Road" — Part 3	0
3	Double Column Transposition Reloaded — Part 2	0
1	Bigram Substitution – Part 1 (Tutorial)	71
1	Monoalphabetic substitution with camouflage — Part 1	74
3	Handycipher — Part 3	8
3	Handycipher — Part 7	2
3	RSA with Special d	26
3	RSA Factoring Challenge: RSA-250	28
X	Kryptos	0
1	Assembly Point – Part 1	0
2	The Syllabary Cipher – Part 2	39
2	The SZ42 Challenge — Part 13	10
3	Recovering the Private Key in the Fully Homomorphic Encryption Scheme	0
3	RSA Factoring Challenge: RSA-330	0
1	From Russia with Love	333
1	Letter to the Templars — Part 1	1162
2	The SZ42 Challenge — Part 4	18
1	One-Time Pad with Flaws	337
1	Polyhomophonic Substitution — Part 1	65
3	The Heavy T52 Sturgeon Challenge — Part 3	3
2	The T52 Sturgeon Challenge — Part 10	9
X	Beale Ciphers	1
X	Double Column Transposition	2
3	Vinaigrette Signature Scheme	5
3	The SIGABA Challenge — Part 5	2
1	Post-Quantum Cryptography: Unbalanced Oil and Vinegar System — Part 1	107
3	ElsieFour — Part 1	4
2	ASAC — A Strong(er) ADFGVX Cipher — Part 4	0
3	RSA Factoring Challenge: RSA-240	29
3	RSA Factoring Challenge: RSA-270	0
2	Homophonic Encryption — Part 1	54
3	ORYX Stream Cipher — Part 4b	2
2	Homophonic Encryption — Part 2	48
3	RSA Factoring Challenge: RSA-420	0
3	RSA Factoring Challenge: RSA-370	0
3	RSA Factoring Challenge: RSA-400	0
2	ORYX Stream Cipher — Part 3 (revised)	31
2	The Hutton Cipher – Part 2	29
3	RSA Factoring Challenge: RSA-470	0
X	The Vatican Challenge — Part 5	0
2	The Syllabary Cipher – Part 5	16
2	Post-Quantum Cryptography: Unbalanced Oil and Vinegar System — Part 2	13
1	Enigma Messages with Repeated Letters — Part 1	208
2	The SZ42 Challenge — Part 8	15
1	Find the right route — Part 1	119
3	World Record Challenge: Break 65 Bits of AES	0
2	RSA Factoring Challenge: RSA-704	69
2	Weakened Handycipher — Part 3	16
2	The Hutton Cipher – Part 1	28
2	Weakened Granit — Part 3	0
2	The SIGABA Challenge — Part 1	13
3	Extended Handycipher — Part 5	4
3	Handycipher — Part 5	6
3	Double Column Transposition Reloaded — Part 3	0
2	A Cloaked Substitution Cipher — Part 1	25
3	RSA Factoring Challenge: RSA-280	0
3	Extended Handycipher — Part 4	4
2	Weakened ElsieFour — Part 3	4
1	A Secret Message from Castle Mansfeld	139
3	RSA Factoring Challenge: RSA-232	29
3	ORYX Stream Cipher — Part 4d	0
2	Weakened Handycipher — Part 1	18
1	Enigma Messages with Repeated Letters — Part 3	103
3	The SIGABA Challenge — Part 6	1
1	New Year's Greetings — Part 4	51
3	Double Column Transposition Reloaded — Part 1	0
3	Handycipher — Part 4	5
3	RSA Factoring Challenge: RSA-320	0
1	The Book Code: A Challenge for Bookworms	169
2	Broadcasting and low exponent — RSA Attack	265
3	RSA Factoring Challenge: RSA-380	0
3	RSA Factoring Challenge: RSA-450	0
2	Flawed Usage of a OTP Cipher by the BND	21
2	Cracking SHA1-Hashed Passwords	678
2	Double-Column Transposition/Granit — Part 1	0
2	Homophonic Encryption — Part 4	45
3	RSA Factoring Challenge: RSA-896	0
3	SIGABA CSP-2900 — Part 3	2
X	Notes of an Italian Soldier	4
2	Spirale — Part 1	8
X	Spanish Strip Cipher — Part 3	0
2	Smartcard RSA	83
2	The Josse Challenge – Part 3	15
2	The LoRa Cipher: Logic Randomness — Part 1	30
2	Weakened Handycipher — Part 6	7
3	Handycipher — Part 9	3
3	RSA Factoring Challenge: RSA-260	0
3	Sigaba Part 2	5
3	The Heavy T52 Sturgeon Challenge — Part 8	0
3	The SIGABA Challenge — Part 3	6
X	The Vatican Challenge — Part 1	3
3	Handycipher — Part 8	3
2	Handycipher — Part 2	9
2	Christmas Challenge 2019: Differential Cryptanalysis — Part 1	5
2	Handycipher — Part 1	7
2	Lunchtime Attack on the Fully Homomorphic Encryption Scheme	50
2	Monoalphabetic Substitution with Camouflage — Part 6	2
2	"The Road" — Part 2	2
2	The SZ42 Challenge — Part 5	17
2	The T52 Sturgeon Challenge — Part 3	16
X	Ku Klux Klan	44
X	The third ENIGMA M4 message	0
3	RSA Factoring Challenge: RSA-480	0
3	The SIGABA Challenge — Part 4	5