id
stringlengths
7
52
text
stringlengths
6
2.11k
ciphertext
stringlengths
6
2.11k
plaintext
stringlengths
6
282
label
stringclasses
81 values
cipher
stringclasses
81 values
cipher_family
stringclasses
13 values
key
unknown
difficulty
stringclasses
7 values
language
stringclasses
8 values
text_length
int64
6
1.09k
length
int64
6
1.28k
source
stringclasses
2 values
dataset_version
stringclasses
2 values
split
stringclasses
1 value
attack_methods
listlengths
0
3
educational_note
stringclasses
32 values
lorenz-v3-0262
THEBATTLEOFBRITAINRAGEDINTHESKIESABOVEENGLANDFORFOURMONTHSINNINETEENFORTY
THEBATTLEOFBRITAINRAGEDINTHESKIESABOVEENGLANDFORFOURMONTHSINNINETEENFORTY
THE BATTLE OF BRITAIN RAGED IN THE SKIES ABOVE ENGLAND FOR FOUR MONTHS IN NINETEEN FORTY
lorenz
lorenz
machine
{ "type": "seed", "value": "COLOSSUS" }
expert
en
73
73
cipher_museum
2.0
public
null
null
adfgx-v2-0290
DGDGXDXADDFFDADAAFAGFDFFDAADFAGAFADFADGDDXGAGGFAGDFAAFXDAAFAFADFXDGGDAXDAFDFDFDXAAFAFFGFXXDFGAXDXGDDDADXXAFFAGDGFFFFXAAGGDDFAXAFFGXGAD
DGDGXDXADDFFDADAAFAGFDFFDAADFAGAFADFADGDDXGAGGFAGDFAAFXDAAFAFADFXDGGDAXDAFDFDFDXAAFAFFGFXXDFGAXDXGDDDADXXAFFAGDGFFFFXAAGGDDFAXAFFGXGAD
I KNOW NOT WHAT COURSE OTHERS MAY TAKE BUT AS FOR ME GIVE ME LIBERTY OR GIVE ME DEATH
adfgx
adfgx
fractionation
{ "polybius": "TRIUMPH", "columnar": "JUSTICE" }
advanced
en
134
134
cipher_museum
2.0
public
null
null
lorenz-v2-0202
THEKASISKITESTFINDSREPECTEDSEQUENCESTODETERMINETHEKEYLGNGTHOFAVIGENERECIPHERKEY
THEKASISKITESTFINDSREPECTEDSEQUENCESTODETERMINETHEKEYLGNGTHOFAVIGENERECIPHERKEY
THE KASISKI TEST FINDS REPEATED SEQUENCES TO DETERMINE THE KEY LENGTH OF A VIGENERE CIPHER KEY
lorenz
lorenz
machine
{ "type": "seed", "value": "FISH" }
expert
en
79
79
cipher_museum
2.0
public
null
null
sigaba-v2-0342
VVEKXFXKHDHTDTFRIMUGZOMSJXIFJVGUKZHIINIYGAZLTECIRDZBKGVCANGYNNOLTWLKEVWEHBUE
VVEKXFXKHDHTDTFRIMUGZOMSJXIFJVGUKZHIINIYGAZLTECIRDZBKGVCANGYNNOLTWLKEVWEHBUE
MARY QUEEN OF SCOTS WAS BEHEADED AFTER HER CIPHER LETTERS WERE DECODED BY THOMAS PHELIPPES
sigaba
sigaba
machine
{ "type": "seed", "value": "FREEDOM" }
expert
en
76
76
cipher_museum
2.0
public
null
null
confederate-vigenere-274
AHQTZXYRTSMMVJKVESMBAARFLVYPVVJGGTNBTIJ
AHQTZXYRTSMMVJKVESMBAARFLVYPVVJGGTNBTIJ
IT WAS THE BEST OF TIMES IT WAS THE WORST OF TIMES
confederate_vigenere
confederate_vigenere
polyalphabetic
{ "type": "keyword", "value": "SOUTHERN" }
intermediate
en
39
39
cipher_museum
0.2
public
null
null
nihilist-v3-0240
26 56 60 65 37 57 66 26 56 87 24 55 59 45 58 29 99 43 55 56 55 55 45 58 53 28 79 64 55 45 58 56 28 79 56 45 48 58 53 55 38 74 47 37 90 22 35 57 76 27 46 77 53 56 58 77 38 57 56 56 48 67 64 65 66 77 52 54
26 56 60 65 37 57 66 26 56 87 24 55 59 45 58 29 99 43 55 56 55 55 45 58 53 28 79 64 55 45 58 56 28 79 56 45 48 58 53 55 38 74 47 37 90 22 35 57 76 27 46 77 53 56 58 77 38 57 56 56 48 67 64 65 66 77 52 54
IN MY BEGINNING IS MY END AND IN MY END IS MY BEGINNING AS THE QUEEN OF SCOTS KNEW WELL
nihilist
nihilist
fractionation
{ "polybius": "TRIUMPH", "keyword": "JUSTICE" }
advanced
en
136
203
cipher_museum
2.0
public
null
null
fialka-v3-0291
OISIAABQYTRSDFSEGNBRYSRVVOGURYPOFYDHYXUUAVDIWLNFHXRUIUSVUGMFZDIZDEGSFZDIQXUEA
OISIAABQYTRSDFSEGNBRYSRVVOGURYPOFYDHYXUUAVDIWLNFHXRUIUSVUGMFZDIZDEGSFZDIQXUEA
THE RIGHT OF THE PEOPLE TO KEEP AND BEAR ARMS SHALL NOT BE INFRINGED BY THE FEDERAL GOVERNMENT
fialka
fialka
machine
{ "type": "seed", "value": "SOVIET" }
expert
en
77
77
cipher_museum
2.0
public
null
null
fialka-v3-0171
BSKYPITYNLGUQBNBGEPRYCFQSYBXYENMBIPYOMOHHLJANMMTXJPSLHVQMHCVCBQXKKAWADYGX
BSKYPITYNLGUQBNBGEPRYCFQSYBXYENMBIPYOMOHHLJANMMTXJPSLHVQMHCVCBQXKKAWADYGX
WATSON WE HAVE FOUND THE STRUCTURE OF DNA AND IT IS A DOUBLE HELIX OF BREATHTAKING BEAUTY
fialka
fialka
machine
{ "type": "seed", "value": "KREMLIN" }
expert
en
73
73
cipher_museum
2.0
public
null
null
rail-fence-v3-0501
TDTSHETYHEEETOBERRPATSCEVOGHEORESWEETNADEELUASNTTRENTTOOASDISIITTNTTDTTHSOEUE
TDTSHETYHEEETOBERRPATSCEVOGHEORESWEETNADEELUASNTTRENTTOOASDISIITTNTTDTTHSOEUE
THE POWERS NOT DELEGATED TO THE UNITED STATES BY THE CONSTITUTION ARE RESERVED TO THE STATES
rail_fence
rail_fence
transposition
{ "type": "integer", "value": 11 }
intermediate
en
77
77
cipher_museum
2.0
public
null
null
cda-0017473
⟨w26⟩ ⟨a19⟩ ⟨w10⟩ ⟨a07⟩ ⟨w22⟩ ⟨a23⟩ ⟨w20⟩ ⟨a01⟩ ⟨a17⟩ ⟨w28⟩ ⟨w22⟩ ⟨w20⟩ ⟨w22⟩ ⟨w08⟩ ⟨a17⟩ ⟨w32⟩ ⟨w26⟩ ⟨w32⟩ ⟨a25⟩ ⟨w22⟩ ⟨w20⟩ ⟨w16⟩ ⟨w28⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨w20⟩ ⟨w08⟩ ⟨w22⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w20⟩ ⟨a13⟩ ⟨w20⟩ ⟨w08⟩ ⟨a25⟩ ⟨w32⟩ ⟨a07⟩ ⟨w26⟩ ⟨w38⟩ ⟨w20⟩ ⟨w40⟩
⟨w26⟩ ⟨a19⟩ ⟨w10⟩ ⟨a07⟩ ⟨w22⟩ ⟨a23⟩ ⟨w20⟩ ⟨a01⟩ ⟨a17⟩ ⟨w28⟩ ⟨w22⟩ ⟨w20⟩ ⟨w22⟩ ⟨w08⟩ ⟨a17⟩ ⟨w32⟩ ⟨w26⟩ ⟨w32⟩ ⟨a25⟩ ⟨w22⟩ ⟨w20⟩ ⟨w16⟩ ⟨w28⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨w20⟩ ⟨w08⟩ ⟨w22⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w20⟩ ⟨a13⟩ ⟨w20⟩ ⟨w08⟩ ⟨a25⟩ ⟨w32⟩ ⟨a07⟩ ⟨w26⟩ ⟨w38⟩ ⟨w20⟩ ⟨w40⟩
GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY
babington
babington
null
{}
medium
en
44
44
synthetic_educational
null
null
[ "nomenclator_frequency", "symbol_mapping" ]
Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot.
cda-0013209
BE / TKIN / MA-E / MA-E / TKIN / DZEH / WOL-LA-CHEE / TSAH / BE / LIN / DZEH / DIBEH-YAZZIE / DIBEH-YAZZIE / NA-AS-TSO-SI / WOL-LA-CHEE / TSAH / TKIN / TSAH / THAN-ZIE / GAH / A-KHA / BE / NO-DA-IH / MOASI / DZEH / BE ...
BE / TKIN / MA-E / MA-E / TKIN / DZEH / WOL-LA-CHEE / TSAH / BE / LIN / DZEH / DIBEH-YAZZIE / DIBEH-YAZZIE / NA-AS-TSO-SI / WOL-LA-CHEE / TSAH / TKIN / TSAH / THAN-ZIE / GAH / A-KHA / BE / NO-DA-IH / MOASI / DZEH / BE ...
DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS CAREFULLY
navajo_code
navajo_code
null
{}
hard
en
218
218
synthetic_educational
null
null
[ "codebook_frequency", "word_list_attack" ]
Navajo Code Talker cipher: Navajo words represent English letters.
stager-route-330
RAWALNXLYXXATXXD
RAWALNXLYXXATXXD
RALLY AT DAWN
stager_route
stager_route
transposition
{ "type": "integer", "value": 8 }
expert
en
16
16
cipher_museum
0.2
public
null
null
lorenz-v2-0122
HOLDTHELINE
HOLDTHELINE
HOLD THE LINE
lorenz
lorenz
machine
{ "type": "seed", "value": "FISH" }
expert
en
11
11
cipher_museum
2.0
public
null
null
chaocipher-180
MMGOKZYYQNTSCZJXDSOWFSWZUTAKQJOPJLRXZBEQDGQWAMDPNHPMIXQENGAPAEJZKZDOLRTGQFYJYHKLFDMQLAJHQCWRGLJGRYEGETAAOGOLEIFLWCTCVRLNIIAHAXJXQHLYVNKRWFLFXSH
MMGOKZYYQNTSCZJXDSOWFSWZUTAKQJOPJLRXZBEQDGQWAMDPNHPMIXQENGAPAEJZKZDOLRTGQFYJYHKLFDMQLAJHQCWRGLJGRYEGETAAOGOLEIFLWCTCVRLNIIAHAXJXQHLYVNKRWFLFXSH
CRYPTANALYSIS IS THE ART OF BREAKING CODES WITHOUT THE KEY AND IT HAS BEEN PRACTICED FOR AS LONG AS THERE HAVE BEEN CODES TO BREAK THE HISTORY OF CRYPTOLOGY IS A BATTLE OF WITS
chaocipher
chaocipher
machine
{ "type": "keyword", "value": "SECRET" }
advanced
en
143
143
cipher_museum
0.2
public
null
null
bazeries-v2-0541
MQSTBPSIBOQFHYQBPPBILKPSP
MQSTBPSIBOQFHYQBPPBILKPSP
SICUT PATRIBUS SIT DEUS NOBIS
bazeries
bazeries
transposition
{ "type": "integer", "value": 53 }
advanced
en
25
25
cipher_museum
2.0
public
null
null
slidex-v3-0109
ZWXBWXOCJVBKXJLE
ZWXBWXOCJVBKXJLE
SOUND THE TRUMPETS
slidex
slidex
transposition
{ "type": "keyword", "value": "LIBERTY" }
advanced
en
16
16
cipher_museum
2.0
public
null
null
four-square-v3-0100
QKPNETDEOTONMOPT
QKPNETDEOTONMOPT
SOUND THE TRUMPETS
four_square
four_square
polygraphic
{ "key1": "LIBERTY", "key2": "FREEDOM" }
advanced
en
16
16
cipher_museum
2.0
public
null
null
hill-v2-0188
OXTDHZTASOMCLYUPJFTAJVZVQJVRGSQPLYIYAEOXKIHQPJQSRUDCJSHVXEPZLLQORKPZNLBMDPJFRJ
OXTDHZTASOMCLYUPJFTAJVZVQJVRGSQPLYIYAEOXKIHQPJQSRUDCJSHVXEPZLLQORKPZNLBMDPJFRJ
THE LORD IS MY SHEPHERD I SHALL NOT WANT HE MAKETH ME LIE DOWN IN GREEN PASTURES BY STILL WATERS
hill
hill
polygraphic
{ "a": 5, "b": 7, "c": 2, "d": 9 }
advanced
en
78
78
cipher_museum
2.0
public
null
null
caesar-v3-0838
HVS UOHSG VCZR TWFA
HVS UOHSG VCZR TWFA
THE GATES HOLD FIRM
caesar
caesar
substitution
{ "type": "shift", "value": 14 }
beginner
en
16
19
cipher_museum
2.0
public
null
null
adfgvx-047
FAAAAAGGGDFFAFAFGFFFFVFFXGFGVXGGGAADAAFGAFDDFAFDGDGGFXXGVXDDVFFXDGXFGFVFXAVGGXFGVGDAAAADAAGAAAGDDG
FAAAAAGGGDFFAFAFGFFFFVFFXGFGVXGGGAADAAFGAFDDFAFDGDGGFXXGVXDDVFFXDGXFGFVFXAVGGXFGVGDAAAADAAGAAAGDDG
VENI VIDI VICI I CAME I SAW I CONQUERED ALL IN A SINGLE BATTLE
adfgvx
adfgvx
fractionation
{ "polybius": "PRIVACY", "columnar": "GERMAN" }
advanced
en
98
98
cipher_museum
0.2
public
null
null
chaocipher-v2-0073
DVOLMJYIPTXXDVUXWRHEJFDEOPOPXUPHZDFTNWFFISBUEGGCDFPBXSTVEANNHDMEESRPTCHBD
DVOLMJYIPTXXDVUXWRHEJFDEOPOPXUPHZDFTNWFFISBUEGGCDFPBXSTVEANNHDMEESRPTCHBD
THE SECRET OF GETTING AHEAD IS GETTING STARTED ONE STEP AT A TIME GETS YOU VERY FAR INDEED
chaocipher
chaocipher
machine
{ "type": "keyword", "value": "PALACE" }
advanced
en
73
73
cipher_museum
2.0
public
null
null
adfgx-200
AAAGFFAAFFGFAADAFAXGDADDFADXGAADGDGXDGAAXFAFDDADDXGAXAAFDGFAXAAGXGAXAADAAGAAGGGGGAXAAAADGF
AAAGFFAAFFGFAADAFAXGDADDFADXGAADGDGXDGAAXFAFDDADDXGAXAAFDGFAXAAGXGAXAADAAGAAGGGGGAXAAAADGF
NEVER INTERRUPT YOUR ENEMY WHEN HE IS MAKING A MISTAKE
adfgx
adfgx
fractionation
{ "polybius": "ENIGMA", "columnar": "CRYPTO" }
advanced
en
90
90
cipher_museum
0.2
public
null
null
red-type-a-v3-0070
SOHIBAAHAEDDIPJICWAGIMWABUOBTGUNAUHIQHIVGNEDTILGAGWLUFSMIUOFTGYLDELHDVIBED
SOHIBAAHAEDDIPJICWAGIMWABUOBTGUNAUHIQHIVGNEDTILGAGWLUFSMIUOFTGYLDELHDVIBED
GALILEO POINTED HIS TELESCOPE AT THE HEAVENS AND CONFIRMED THAT THE EARTH ORBITS THE SUN
red_type_a
red_type_a
machine
{ "type": "keyword", "value": "SAKURA" }
advanced
en
74
74
cipher_museum
2.0
public
null
null
m94-101
VVZDMPSPOIVTOQWFZAYNDSQULXWLGRTFABIMDGDVFZXKTOD
VVZDMPSPOIVTOQWFZAYNDSQULXWLGRTFABIMDGDVFZXKTOD
ASK NOT WHAT YOUR COUNTRY CAN DO FOR YOU BUT WHAT YOU CAN DO
m94
m94
machine
{ "type": "seed", "value": "CIPHER" }
expert
en
47
47
cipher_museum
0.2
public
null
null
porta-v2-0473
JWXTWARTLUWDUHTBWLLTHCSSYJRVALYPACWDJPTPPTHEORDTDPOBEPDRXRDRRXAVQEXLWXDTXENDNPDXMC
JWXTWARTLUWDUHTBWLLTHCSSYJRVALYPACWDJPTPPTHEORDTDPOBEPDRXRDRRXAVQEXLWXDTXENDNPDXMC
THE CIPHER DISK WAS INVENTED BY LEON BATTISTA ALBERTI A RENAISSANCE ARCHITECT AND GREAT HUMANIST
porta
porta
polyalphabetic
{ "type": "keyword", "value": "VENICE" }
intermediate
en
82
82
cipher_museum
2.0
public
null
null
alberti-disk-v3-0560
JEXJNS
JEXJNS
EUREKA
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 14 }
expert
en
6
6
cipher_museum
2.0
public
null
null
slidex-035
THKMBSWBZFVBNKLERRWBPCGZDOAMBNKCKYFWLEYPHJ
THKMBSWBZFVBNKLERRWBPCGZDOAMBNKCKYFWLEYPHJ
IN WAR THE MORAL IS TO THE PHYSICAL AS THREE IS TO ONE
slidex
slidex
transposition
{ "type": "keyword", "value": "SECRET" }
advanced
en
42
42
cipher_museum
0.2
public
null
null
noisy-monoalphabetic-ocr_light-010
MAT GKUKCH YHPT NKEDTLM ILHUBPTP KG QGRLTKDKRET YHFFQGBYKNBHG MXMNTF BG NAT IKYBOBY
MAT GKUKCH YHPT NKEDTLM ILHUBPTP KG QGRLTKDKRET YHFFQGBYKNBHG MXMNTF BG NAT IKYBOBY
THE NAVAJO CODE TALKERS PROVIDED AN UNBREAKABLE COMMUNICATION SYSTEM IN THE PACIFIC
monoalphabetic
monoalphabetic
substitution
{ "type": "keyword", "value": "KRYPTOS" }
beginner
en
72
83
cipher_museum
0.2
public
null
null
four-square-v2-0029
IETGLOETAQFNFQYCCRKSXY
IETGLOETAQFNFQYCCRKSXY
PATIENCE BRINGS VICTORY
four_square
four_square
polygraphic
{ "key1": "PALACE", "key2": "BATTLE" }
advanced
en
22
22
cipher_museum
2.0
public
null
null
alberti-disk-241
LSSLNWOIZMKU
LSSLNWOIZMKU
ATTACK AT DAWN
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 22 }
expert
en
12
12
cipher_museum
0.2
public
null
null
adfgx-129
FAAGGADFFDXXXDDDAAGADXDFFAAADF
FAAGGADFFDXXXDDDAAGADXDFFAAADF
MEET AT THE OLD OAK
adfgx
adfgx
fractionation
{ "polybius": "SECRET", "columnar": "AGENTS" }
advanced
en
30
30
cipher_museum
0.2
public
null
null
vic-125
3863095808790632863490
3863095808790632863490
ENEMY FORCES NEAR
vic
vic
substitution
{ "type": "keyword", "value": "MUSEUM" }
advanced
en
22
22
cipher_museum
0.2
public
null
null
cda-0020636
TZXWFVKFXAVFRWXXKWLKVRORYMASSESIFVZRRTEPTWQFXMPSLXBSLRIIOWLGJITJBKVRSKFSKUCLIUSVORBPKWOPHEYRLATXKPLUPPPWEVXMRFWTTVYKXOMU
TZXWFVKFXAVFRWXXKWLKVRORYMASSESIFVZRRTEPTWQFXMPSLXBSLRIIOWLGJITJBKVRSKFSKUCLIUSVORBPKWOPHEYRLATXKPLUPPPWEVXMRFWTTVYKXOMU
THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER
running_key
running_key
null
{}
hard
en
120
120
synthetic_educational
null
null
[ "index_of_coincidence", "probable_plaintext" ]
Running-key cipher: Vigenère with a very long key (e.g. a book passage).
columnar-transposition-v2-0352
ASYEENOSVOLNLEOUUOTOIJERANSSSALVAIEDESSSRSEBCTVSLNNPDQEEOOIUOOOAOUNLE
ASYEENOSVOLNLEOUUOTOIJERANSSSALVAIEDESSSRSEBCTVSLNNPDQEEOOIUOOOAOUNLE
LA VIDA ES SUENO Y LOS SUENOS SUENOS SON PARA TODOS LOS QUE VIVEN BAJO EL CIELO ETERNO
columnar_transposition
columnar_transposition
transposition
{ "type": "keyword", "value": "BATTLE" }
intermediate
en
69
69
cipher_museum
2.0
public
null
null
solitaire-v3-0149
WYNAOVWJVGTEBKEPHPUL
WYNAOVWJVGTEBKEPHPUL
STEAM POWER TRANSFORMS
solitaire
solitaire
stream
{ "type": "passphrase", "value": "SCHNEIER" }
expert
en
20
20
cipher_museum
2.0
public
null
null
porta-v2-0387
JWXYOCYMLZERVTTA
JWXYOCYMLZERVTTA
THE HARBOR IS CLEAR
porta
porta
polyalphabetic
{ "type": "keyword", "value": "VENICE" }
intermediate
en
16
16
cipher_museum
2.0
public
null
null
kama-sutra-v3-0366
MJN UEFI MJYEK ENPNXXRAI LUA MJN MAYOTCJ UL NDYF YX LUA KUUV TNE MU VU EUMJYEK RM RFF
MJN UEFI MJYEK ENPNXXRAI LUA MJN MAYOTCJ UL NDYF YX LUA KUUV TNE MU VU EUMJYEK RM RFF
THE ONLY THING NECESSARY FOR THE TRIUMPH OF EVIL IS FOR GOOD MEN TO DO NOTHING AT ALL
kama_sutra
kama_sutra
substitution
{ "type": "keyword", "value": "WISDOM" }
intermediate
en
68
85
cipher_museum
2.0
public
null
null
zimmermann-054
00000 99999 90004 90013 90004 90012 90024 99998 99999 90010 90013 90014 90022 90018 99998 00000 99999 90018 90024 90018 90019 90004 90012 99998 99999 90003 90004 90018 90008 90006 90013 99998 00061 99999 90002 90008 90015 90007 90004 90017 99998 99999 90000 90002 90002 90014 90017 90003 90008 90013 90006 90011 90024 99...
00000 99999 90004 90013 90004 90012 90024 99998 99999 90010 90013 90014 90022 90018 99998 00000 99999 90018 90024 90018 90019 90004 90012 99998 99999 90003 90004 90018 90008 90006 90013 99998 00061 99999 90002 90008 90015 90007 90004 90017 99998 99999 90000 90002 90002 90014 90017 90003 90008 90013 90006 90011 90024 99...
THE ENEMY KNOWS THE SYSTEM DESIGN YOUR CIPHER ACCORDINGLY WITH GREAT CARE
zimmermann
zimmermann
codebook
{ "type": "none", "value": null }
expert
en
340
407
cipher_museum
0.2
public
null
null
gronsfeld-v2-0876
UIGIZOECPJOUCOUSPDOJNPHFTNNWQNDBVLTOJUWMBUQIWFQTRIVDKQLBUQQJQPKQYFJVKJSFZDHUMARWBQRUTYJODYFMADRFTUDLFTGOJDUGGFUBPRYIFTSTJOVIWFRWHSUMAWMFNGVXBHGVMBWGPJBOKQLBOFUJGFTWTQIAVNDBNFTODGSYT
UIGIZOECPJOUCOUSPDOJNPHFTNNWQNDBVLTOJUWMBUQIWFQTRIVDKQLBUQQJQPKQYFJVKJSFZDHUMARWBQRUTYJODYFMADRFTUDLFTGOJDUGGFUBPRYIFTSTJOVIWFRWHSUMAWMFNGVXBHGVMBWGPJBOKQLBOFUJGFTWTQIAVNDBNFTODGSYT
THE FUNDAMENTAL PROBLEM OF COMMUNICATION IS THAT OF REPRODUCING AT ONE POINT EITHER EXACTLY OR APPROXIMATELY A MESSAGE SELECTED AT ANOTHER POINT FREQUENTLY THE MESSAGES HAVE MEANING AND REFER TO PHYSICAL CONCEPTS
gronsfeld
gronsfeld
polyalphabetic
{ "type": "numeric", "value": "11235" }
intermediate
en
181
181
cipher_museum
2.0
public
null
null
enigma-v3-0572
MYBUPLAXJCPECKSBTFSRKSXJEGNJTKCRTGBQKMZXIFDQYTYVRECITCGGITEZFIVHNPMEQLRTJ
MYBUPLAXJCPECKSBTFSRKSXJEGNJTKCRTGBQKMZXIFDQYTYVRECITCGGITEZFIVHNPMEQLRTJ
DO NOT GO GENTLE INTO THAT GOOD NIGHT OLD AGE SHOULD BURN AND RAVE AT CLOSE OF DAY RAGE RAGE
enigma
enigma
machine
{ "type": "rotor_start", "value": "PQR" }
expert
en
73
73
cipher_museum
2.0
public
null
null
joseon-yeokhak-v3-0045
ABMIUXWEMZBZIVANWZUA
ABMIUXWEMZBZIVANWZUA
STEAM POWER TRANSFORMS
joseon_yeokhak
joseon_yeokhak
substitution
{ "type": "keyword", "value": "SEOUL" }
beginner
en
20
20
cipher_museum
2.0
public
null
null
trifid-v2-0526
FTHIHUFXFWWJOQRR
FTHIHUFXFWWJOQRR
DIVIDE AND CONQUER
trifid
trifid
fractionation
{ "type": "keyword", "value": "JUSTICE" }
advanced
en
16
16
cipher_museum
2.0
public
null
null
great-cipher-149
177 159 145 162 153 159 170 137 139 181 177 134 127 175
177 159 145 162 153 159 170 137 139 181 177 134 127 175
LOCK DOWN ALL GATES
great_cipher
great_cipher
nomenclator
{ "type": "seed", "value": "SECRET" }
expert
en
42
55
cipher_museum
0.2
public
null
null
confederate-vigenere-v2-0709
IIVEJFCJCMQVDWOCEZCMNKFHORMZWHWSUBVSVBKMKBHUOOAERSSUTZZZUKJFNIOVVIVWTUEJXQTMDFM
IIVEJFCJCMQVDWOCEZCMNKFHORMZWHWSUBVSVBKMKBHUOOAERSSUTZZZUKJFNIOVVIVWTUEJXQTMDFM
NATURE IS WRITTEN IN THE LANGUAGE OF MATHEMATICS AND ITS CHARACTERS ARE TRIANGLES AND CIRCLES
confederate_vigenere
confederate_vigenere
polyalphabetic
{ "type": "keyword", "value": "VICKSBURG" }
intermediate
en
79
79
cipher_museum
2.0
public
null
null
cda-0015737
66 36 82 57 50 20 80 68 80 43 65 80 82 61 82 80 95 82 61 55 29 69 89 57 82 11 25 82 76 69 80 66 36 82 52 69 77 77 59 29 50 66 43 25 80 69 29 61 76 82 57 11 59 61 82 61 68 11 50 25 50 66 61 82 72 59 82 29 52 82 68 61 66 36 82 80 82 65 82 68 66 50 29 25 55 82 43 66 36 82 55 68 61 50 61 55 50 82 73 68 77 50 29 68 66 50 69...
66 36 82 57 50 20 80 68 80 43 65 80 82 61 82 80 95 82 61 55 29 69 89 57 82 11 25 82 76 69 80 66 36 82 52 69 77 77 59 29 50 66 43 25 80 69 29 61 76 82 57 11 59 61 82 61 68 11 50 25 50 66 61 82 72 59 82 29 52 82 68 61 66 36 82 80 82 65 82 68 66 50 29 25 55 82 43 66 36 82 55 68 61 50 61 55 50 82 73 68 77 50 29 68 66 50 69...
THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT
wallis_cipher
wallis_cipher
null
{}
hard
en
141
141
synthetic_educational
null
null
[ "number_substitution_decode", "frequency_analysis" ]
Wallis cipher: each letter mapped to a unique two-digit number from a fixed table.
beaufort-v3-0713
JVCDBPJPNOGDNWYWGNIZPOHNONJAKFAUUFOGXFXCGPGCJJAMVNAOAASAWOHNLWOEUPHZXOSDPNLBKCJFQDW
JVCDBPJPNOGDNWYWGNIZPOHNONJAKFAUUFOGXFXCGPGCJJAMVNAOAASAWOHNLWOEUPHZXOSDPNLBKCJFQDW
RSA ENCRYPTION RELIES ON THE MATHEMATICAL DIFFICULTY OF FACTORING THE PRODUCT OF TWO LARGE PRIMES
beaufort
beaufort
polyalphabetic
{ "type": "keyword", "value": "ANCHOR" }
intermediate
en
83
83
cipher_museum
2.0
public
null
null
nihilist-021
79 58 79 56 36 68 58 57 79 48 38 67 59 48 66 45 50 78
79 58 79 56 36 68 58 57 79 48 38 67 59 48 66 45 50 78
THE BRIDGE IS SECURED
nihilist
nihilist
fractionation
{ "polybius": "RUSSIAN", "keyword": "KEY" }
advanced
en
36
53
cipher_museum
0.2
public
null
null
double-transposition-v2-0296
LRRSTIOIEVDAHAOCEEHMNNHIESECSEHSEERDDEEWTANBAFAAEEAVBORIMTYUNTDTTTTT
LRRSTIOIEVDAHAOCEEHMNNHIESECSEHSEERDDEEWTANBAFAAEEAVBORIMTYUNTDTTTTT
COWARDS DIE MANY TIMES BEFORE THEIR DEATHS THE VALIANT NEVER TASTE DEATH BUT ONCE
double_transposition
double_transposition
transposition
{ "key1": "TRIUMPH", "key2": "JUSTICE" }
advanced
en
68
68
cipher_museum
2.0
public
null
null
cda-0016686
--. .-. --- -. ... ..-. . .-.. -.. / ..- ... . ... / .- / -.. .. --. .. - / ... . --.- ..- . -. -.-. . / .- ... / - .... . / .-. . .--. . .- - .. -. --. / -.- . -.-- / - .... . / - .-. .. - .... . -- .. ..- ... / -.-. .. .--. .... . .-. / .- -.. ...- .- -. -.-. . ... / - .... . / .- .-.. .--. .... .- -... . - / -... -....
--. .-. --- -. ... ..-. . .-.. -.. / ..- ... . ... / .- / -.. .. --. .. - / ... . --.- ..- . -. -.-. . / .- ... / - .... . / .-. . .--. . .- - .. -. --. / -.- . -.-- / - .... . / - .-. .. - .... . -- .. ..- ... / -.-. .. .--. .... . .-. / .- -.. ...- .- -. -.-. . ... / - .... . / .- .-.. .--. .... .- -... . - / -... -....
GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE
morse_code
morse_code
null
{}
hard
en
194
194
synthetic_educational
null
null
[ "symbol_decode", "frequency_analysis" ]
Morse code: dots and dashes; word-separated by / symbol.
enigma-v3-0859
ZTWNKOWLOJGPQOWUISXY
ZTWNKOWLOJGPQOWUISXY
THE COMPASS POINTS TRUE
enigma
enigma
machine
{ "type": "rotor_start", "value": "AAB" }
expert
en
20
20
cipher_museum
2.0
public
null
null
kryptos-v2-0313
PURRCHUXQVGYKRRRSOWFFWXSZHEMXBSBMUXKLSZVJVLBOOWJXIZSJKBNRDOCOHNPBEEFTXXU
PURRCHUXQVGYKRRRSOWFFWXSZHEMXBSBMUXKLSZVJVLBOOWJXIZSJKBNRDOCOHNPBEEFTXXU
ASK WHAT YOU CAN DO FOR YOUR COUNTRY NOT WHAT YOUR COUNTRY CAN DO FOR YOU TODAY AND ALWAYS
kryptos
kryptos
polyalphabetic
{ "type": "keyword", "value": "VIRTUAL" }
advanced
en
72
72
cipher_museum
2.0
public
null
null
four-square-v2-0402
TRAALGLUNUPADFMTLIQSEFSHASNUZTALUNUHGQFUGATYUHTATPAFOUCQALONGBHAIQLOFUISASENALSY
TRAALGLUNUPADFMTLIQSEFSHASNUZTALUNUHGQFUGATYUHTATPAFOUCQALONGBHAIQLOFUISASENALSY
RICHMOND HAS FALLEN OUR FORCES HAVE ENTERED THE CITY RESISTANCE IS ENDED INFORM THE PRESIDENT
four_square
four_square
polygraphic
{ "key1": "DRAGON", "key2": "THUNDER" }
advanced
en
80
80
cipher_museum
2.0
public
null
null
joseon-yeokhak-v3-0074
LWCVBWWBPMZAIAGWCEWCTLPIDMBPMULWCVBWGWCBPQAQABPMOWTLMVZCTMWNITTZMTQOQWVA
LWCVBWWBPMZAIAGWCEWCTLPIDMBPMULWCVBWGWCBPQAQABPMOWTLMVZCTMWNITTZMTQOQWVA
DO UNTO OTHERS AS YOU WOULD HAVE THEM DO UNTO YOU THIS IS THE GOLDEN RULE OF ALL RELIGIONS
joseon_yeokhak
joseon_yeokhak
substitution
{ "type": "keyword", "value": "SEOUL" }
beginner
en
72
72
cipher_museum
2.0
public
null
null
joseon-yeokhak-v3-0338
LJWSKMJWTMJAWVZWJW
LJWSKMJWTMJAWVZWJW
TREASURE BURIED HERE
joseon_yeokhak
joseon_yeokhak
substitution
{ "type": "keyword", "value": "DYNASTY" }
beginner
en
18
18
cipher_museum
2.0
public
null
null
diana-v2-0248
ZHSYQAUOOEZGTDHMNYVNXHBRWEJXRLGJBWDBAELENSAPRZEFHBRQPESTWYWJANFSOQOYSSALAQQHXGLLVIHSLLGOONFLPJYIPPSRMCVXPKETCXELUXDYINRFYKRKUHFLNCPSXFKKRXMGNBQRAIEFLMK
ZHSYQAUOOEZGTDHMNYVNXHBRWEJXRLGJBWDBAELENSAPRZEFHBRQPESTWYWJANFSOQOYSSALAQQHXGLLVIHSLLGOONFLPJYIPPSRMCVXPKETCXELUXDYINRFYKRKUHFLNCPSXFKKRXMGNBQRAIEFLMK
TIMES ARE BAD CHILDREN NO LONGER OBEY THEIR PARENTS AND EVERYONE IS WRITING A BOOK IT SEEMS TO ME THAT THE YOUNG HAVE ALWAYS AND WILL ALWAYS BE AN UNRULY GENERATION FULL OF FOOLISHNESS
diana
diana
polyalphabetic
{ "type": "keyword", "value": "SPECIAL" }
intermediate
en
151
151
cipher_museum
2.0
public
null
null
diana-042
BRCYHPCJNLWKSVHWELWABPSLWPDIJYJRSAUBUOBGQAYNHVUNVVMUONXIEJVAMAWV
BRCYHPCJNLWKSVHWELWABPSLWPDIJYJRSAUBUOBGQAYNHVUNVVMUONXIEJVAMAWV
CRYPTOGRAPHY IS THE PRACTICE OF SECURING COMMUNICATIONS FROM ADVERSARIES
diana
diana
polyalphabetic
{ "type": "keyword", "value": "DIANA" }
intermediate
en
64
64
cipher_museum
0.2
public
null
null
joseon-yeokhak-v2-0426
SDDLZWOGJDVKSKLSYWSFVWSUZESFAFZAKLAEWHDSQKESFQHSJLKGFDAXWKYJWSLKLSYW
SDDLZWOGJDVKSKLSYWSFVWSUZESFAFZAKLAEWHDSQKESFQHSJLKGFDAXWKYJWSLKLSYW
ALL THE WORLDS A STAGE AND EACH MAN IN HIS TIME PLAYS MANY PARTS ON LIFES GREAT STAGE
joseon_yeokhak
joseon_yeokhak
substitution
{ "type": "keyword", "value": "DYNASTY" }
beginner
en
68
68
cipher_museum
2.0
public
null
null
cda-0017673
GRON SFEL DUSE SAXI GITS EQUE NCEA STHE REXE ATIX GKEY DONO TCON FUZE OBFU SCAT IONW IXHE NCRY PTIX NTHE ONET IMEP ADIS THEO RETI CALL YUNB REAK ABLE IFUS EDCO RREC TLY
GRON SFEL DUSE SAXI GITS EQUE NCEA STHE REXE ATIX GKEY DONO TCON FUZE OBFU SCAT IONW IXHE NCRY PTIX NTHE ONET IMEP ADIS THEO RETI CALL YUNB REAK ABLE IFUS EDCO RREC TLY
GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY
commercial_code
commercial_code
null
{}
hard
en
135
135
synthetic_educational
null
null
[ "codebook_frequency", "five_letter_group_analysis" ]
Commercial code: five-letter groups from a codebook, often ending in X or Z.
cda-0011453
IIEAE XNPCR NHTGA MUFRL DHIRH ERESN CAXEE DEAIS SEKCI MRPIA EDATI FXHEI TOOIM PTRNE SIDIE RSERH GREPS KAQII NTTSN GPSAP TP
IIEAE XNPCR NHTGA MUFRL DHIRH ERESN CAXEE DEAIS SEKCI MRPIA EDATI FXHEI TOOIM PTRNE SIDIE RSERH GREPS KAQII NTTSN GPSAP TP
THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS
double_transposition
double_transposition
null
{ "key1": "MUSEUM", "key2": "PALACE" }
hard
en
102
102
synthetic_educational
null
null
[]
vic-v3-0305
814853014585263
814853014585263
GOLD FROM LEAD
vic
vic
substitution
{ "type": "keyword", "value": "FREEDOM" }
advanced
en
15
15
cipher_museum
2.0
public
null
null
cda-0019761
K r· L Γ· ─ Γ L ⌣ ┘· ⌐· r ┘· Γ· ─ r Γ· Γ L ─ r L Γ· X ⌐ X· X L ⌐· X· └ r └ X· L
K r· L Γ· ─ Γ L ⌣ ┘· ⌐· r ┘· Γ· ─ r Γ· Γ L ─ r L Γ· X ⌐ X· X L ⌐· X· └ r └ X· L
THE INDEX OF COINCIDENCE IS A USEFUL CLUE
pigpen
pigpen
null
{}
easy
en
17
17
synthetic_educational
null
null
[ "symbol_frequency", "grid_position_decode" ]
Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids.
cda-0013025
35 11 44 44 15 42 33 52 34 42 14 43 23 15 31 35 12 42 15 11 25 32 34 33 34 11 31 35 23 11 12 15 44 24 13 43 45 12 43 44 24 44 45 44 24 34 33 34 12 43 15 42 51 11 12 31 15 15 51 24 14 15 33 13 15 13 34 32 15 43 12 15 21 34 42 15 13 34 33 21 24 14 15 33 13 15
35 11 44 44 15 42 33 52 34 42 14 43 23 15 31 35 12 42 15 11 25 32 34 33 34 11 31 35 23 11 12 15 44 24 13 43 45 12 43 44 24 44 45 44 24 34 33 34 12 43 15 42 51 11 12 31 15 15 51 24 14 15 33 13 15 13 34 32 15 43 12 15 21 34 42 15 13 34 33 21 24 14 15 33 13 15
PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE
polybius
polybius
null
{}
hard
en
86
86
synthetic_educational
null
null
[ "pair_decode", "frequency_analysis" ]
Polybius square: 5×5 grid maps letters to two-digit row-column pairs.
cda-0015127
801 839 999 802 817 816 825 841 812 999 806 826 846 822 813 851 999 801 845 847 834 824 813 855 999 801 999 833 825 841 812 802 852 999 816 862 839 808 857 826 842 839 999 859 842 999 813 800 806 821 999 833 813 857 857 812 852 999
801 839 999 802 817 816 825 841 812 999 806 826 846 822 813 851 999 801 845 847 834 824 813 855 999 801 999 833 825 841 812 802 852 999 816 862 839 808 857 826 842 839 999 859 842 999 813 800 806 821 999 833 813 857 857 812 852 999
AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER
culper_ring
culper_ring
null
{}
medium
en
48
48
synthetic_educational
null
null
[ "codebook_frequency", "number_range_analysis" ]
Culper Ring code: Washington's three-digit codebook numbers (800–999 range).
adfgvx-v2-0260
XDXFAAXDXDDDDFADVADGAFAAAAXADGDXVAAA
XDXFAAXDXDDDDFADVADGAFAAAAXADGDXVAAA
ENEMY RETREATS NORTH
adfgvx
adfgvx
fractionation
{ "polybius": "TRIUMPH", "columnar": "JUSTICE" }
advanced
en
36
36
cipher_museum
2.0
public
null
null
gronsfeld-147
ULFXTBTJWUFX
ULFXTBTJWUFX
THE TRAP IS SET
gronsfeld
gronsfeld
polyalphabetic
{ "type": "numeric", "value": "14142" }
intermediate
en
12
12
cipher_museum
0.2
public
null
null
bifid-v2-0269
EKDIROTYWNUU
EKDIROTYWNUU
IN GOD WE TRUST
bifid
bifid
fractionation
{ "type": "keyword", "value": "LIBERTY" }
advanced
en
12
12
cipher_museum
2.0
public
null
null
cda-0018911
ASTRO NGCLA IMNEE DSSTR ONGEV IDENC ECDBX
ASTRO NGCLA IMNEE DSSTR ONGEV IDENC ECDBX
A STRONG CLAIM NEEDS STRONG EVIDENCE
commercial_code
commercial_code
null
{}
medium
en
35
35
synthetic_educational
null
null
[ "codebook_frequency", "five_letter_group_analysis" ]
Commercial code: five-letter groups from a codebook, often ending in X or Z.
chinese-telegraph-v2-0066
1421 0472 0285 0347 0285 0012 1255 0918 0347 1421 0472 0285 0729 0918 1255 0219 0538 1346 1421 0472 0285 0074 0285 0408 0538 0856 0856 0538 0856 0408 0918 0347 1672 0538 1346 0219 0918 0792 0012 0856 0219 0667 0856 0918 1672 0729 0285 0219 0408 0285 0918 0347 1421 0472 0285 0472 0918 0729 1821 0918 0856 0285 0538 1346 ...
1421 0472 0285 0347 0285 0012 1255 0918 0347 1421 0472 0285 0729 0918 1255 0219 0538 1346 1421 0472 0285 0074 0285 0408 0538 0856 0856 0538 0856 0408 0918 0347 1672 0538 1346 0219 0918 0792 0012 0856 0219 0667 0856 0918 1672 0729 0285 0219 0408 0285 0918 0347 1421 0472 0285 0472 0918 0729 1821 0918 0856 0285 0538 1346 ...
THE FEAR OF THE LORD IS THE BEGINNING OF WISDOM AND KNOWLEDGE OF THE HOLY ONE IS UNDERSTANDING
chinese_telegraph
chinese_telegraph
codebook
{ "type": "none", "value": null }
expert
en
308
384
cipher_museum
2.0
public
null
null
wallis-cipher-v2-0231
90 15 44 63 91 115 90 67 54 30 77 91 90 58 85 30 41 91 90 84 45 53 91 90 88 25 40 54 15 84 85 81 91 90 79 66 45 54 77 91 90 55 76 84 81 61 25 20 75 63 27 76 66 15 53 91 90 18 55 20 54 37 63 91 90 35 55 85 74 91 90 45 44 76 91 90 63 47 40 15 76 20 81 91 90 73 25 27 74 18 66 33 91 90 80 85 53 45 91 90 58 63 55 76 91
90 15 44 63 91 115 90 67 54 30 77 91 90 58 85 30 41 91 90 84 45 53 91 90 88 25 40 54 15 84 85 81 91 90 79 66 45 54 77 91 90 55 76 84 81 61 25 20 75 63 27 76 66 15 53 91 90 18 55 20 54 37 63 91 90 35 55 85 74 91 90 45 44 76 91 90 63 47 40 15 76 20 81 91 90 73 25 27 74 18 66 33 91 90 80 85 53 45 91 90 58 63 55 76 91
THE REGIMENT WILL HOLD ITS POSITION UNTIL REINFORCEMENTS ARRIVE FROM THE EASTERN COMMAND POST HERE
wallis_cipher
wallis_cipher
nomenclator
{ "type": "seed", "value": "ENGLAND" }
expert
en
211
315
cipher_museum
2.0
public
null
null
lorenz-v2-0148
PATIENCEBRINGSVICTORY
PATIENCEBRINGSVICTORY
PATIENCE BRINGS VICTORY
lorenz
lorenz
machine
{ "type": "seed", "value": "FISH" }
expert
en
21
21
cipher_museum
2.0
public
null
null
cda-0020002
20 8 5 1 21 20 15 11 5 25 3 9 16 8 5 18 5 24 20 5 14 4 19 20 8 5 11 5 25 23 9 20 8 20 8 5 16 12 1 9 14 20 5 24 20 9 20 19 5 12 6 6 1 9 12 3 12 15 19 5 4 9 19 1 16 15 19 20 21 18 5 14 15 20 1 19 12 15 7 1 14
20 8 5 1 21 20 15 11 5 25 3 9 16 8 5 18 5 24 20 5 14 4 19 20 8 5 11 5 25 23 9 20 8 20 8 5 16 12 1 9 14 20 5 24 20 9 20 19 5 12 6 6 1 9 12 3 12 15 19 5 4 9 19 1 16 15 19 20 21 18 5 14 15 20 1 19 12 15 7 1 14
THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF FAIL CLOSED IS A POSTURE NOT A SLOGAN
aeneas_tacticus
aeneas_tacticus
null
{}
hard
en
81
81
synthetic_educational
null
null
[ "sequential_number_decode", "frequency_analysis" ]
Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26.
cda-0020004
K r· L ⌐· ┌· Γ· L Γ ┌ ⌐ ─ K L X K X· X L X K r· L Γ· ─ Γ L ⌣ ┘· ⌐· r ┘· Γ· ─ r Γ· Γ L ─ r L K ┘· L X K Γ· ┌ ⌐ K L ┐ L ⌒· └ L ─ ¬· K r· K r· L Γ L K L r K Γ· K· L X K X· Γ Γ· L X ┐· ⌐ K K L ┌· ─ X ¬ L ⌐· ┘· ┌· L ┌ ⌐ ┐ Γ· ─ ¬· r └ ⌐ Γ· ┌ X L K· L ┌· ⌒· X ⌒· X K L ┌ ─ L L Γ X ⌐ ─ r· ┘· ─ L X K K r· ┌· L ⌐ K ┌ ┘· Γ L └
K r· L ⌐· ┌· Γ· L Γ ┌ ⌐ ─ K L X K X· X L X K r· L Γ· ─ Γ L ⌣ ┘· ⌐· r ┘· Γ· ─ r Γ· Γ L ─ r L K ┘· L X K Γ· ┌ ⌐ K L ┐ L ⌒· └ L ─ ¬· K r· K r· L Γ L K L r K Γ· K· L X K X· Γ Γ· L X ┐· ⌐ K K L ┌· ─ X ¬ L ⌐· ┘· ┌· L ┌ ⌐ ┐ Γ· ─ ¬· r └ ⌐ Γ· ┌ X L K· L ┌· ⌒· X ⌒· X K L ┌ ─ L L Γ X ⌐ ─ r· ┘· ─ L X K K r· ┌· L ⌐ K ┌ ┘· Γ L └
THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS EVERY SYSTEM NEEDS AN HONEST THREAT MODEL
pigpen
pigpen
null
{}
medium
en
73
73
synthetic_educational
null
null
[ "symbol_frequency", "grid_position_decode" ]
Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids.
kryptos-145
GWWQBILVGUEKZLZ
GWWQBILVGUEKZLZ
SILENCE IS GOLDEN
kryptos
kryptos
polyalphabetic
{ "type": "keyword", "value": "ABSCISSA" }
advanced
en
15
15
cipher_museum
0.2
public
null
null
enigma-v3-0333
OQQGMOFLVATHZRWOBBBMIDLIHY
OQQGMOFLVATHZRWOBBBMIDLIHY
THE PRINTING PRESS CHANGES ALL
enigma
enigma
machine
{ "type": "rotor_start", "value": "JKL" }
expert
en
26
26
cipher_museum
2.0
public
null
null
bazeries-v2-0807
VBLIGAANHYMSFFSIHTYLQVLIAMTTRSPHTTLTAPNBVTLXPBMTSPMTVHTMBTNHHBNLIYAPGLJTBMTHTNP
VBLIGAANHYMSFFSIHTYLQVLIAMTTRSPHTTLTAPNBVTLXPBMTSPMTVHTMBTNHHBNLIYAPGLJTBMTHTNP
RICHMOND HAS FALLEN OUR FORCES HAVE ENTERED THE CITY RESISTANCE IS ENDED INFORM THE PRESIDENT
bazeries
bazeries
transposition
{ "type": "integer", "value": 71 }
advanced
en
79
79
cipher_museum
2.0
public
null
null
two-square-v3-0261
BLFULFEETARGEMDAKFORRGGWNMBKLINHKOITRGDACPRGPPGIHEPECSEMAKKOOCHAQGBECAQGGASOOU
BLFULFEETARGEMDAKFORRGGWNMBKLINHKOITRGDACPRGPPGIHEPECSEMAKKOOCHAQGBECAQGGASOOU
BLESSED ARE THE MEEK FOR THEY SHALL INHERIT THE EARTH AND THE PEACEMAKERS SHALL BE CALLED SONS
two_square
two_square
polygraphic
{ "key1": "TRIUMPH", "key2": "JUSTICE" }
advanced
en
78
78
cipher_museum
2.0
public
null
null
pigpen-v2-0066
╳ ┬ ┼ ┤ ┼ ⌐ ┐• ┤• ┤ ╳ ┬ ┼ ¬• ┤• ┐• ├ ┐ ╲ ╳ ┬ ┼ ┴ ┼ ┌ ┐ ┼• ┼• ┐ ┼• ┌ ┤• ┤ ╳• ┐ ╲ ├ ┤• ├• ⌐ ┼• ├ ┴• ┼• ┤• ╳• ¬• ┼ ├ ┌ ┼ ┤• ┤ ╳ ┬ ┼ ┬ ┤• ¬• ▽ ┤• ┼• ┼ ┐ ╲ ╱ ┼• ├ ┼ ┐• ╲ ╳ ⌐ ┼• ├ ┐ ┼• ┌
╳ ┬ ┼ ┤ ┼ ⌐ ┐• ┤• ┤ ╳ ┬ ┼ ¬• ┤• ┐• ├ ┐ ╲ ╳ ┬ ┼ ┴ ┼ ┌ ┐ ┼• ┼• ┐ ┼• ┌ ┤• ┤ ╳• ┐ ╲ ├ ┤• ├• ⌐ ┼• ├ ┴• ┼• ┤• ╳• ¬• ┼ ├ ┌ ┼ ┤• ┤ ╳ ┬ ┼ ┬ ┤• ¬• ▽ ┤• ┼• ┼ ┐ ╲ ╱ ┼• ├ ┼ ┐• ╲ ╳ ⌐ ┼• ├ ┐ ┼• ┌
THE FEAR OF THE LORD IS THE BEGINNING OF WISDOM AND KNOWLEDGE OF THE HOLY ONE IS UNDERSTANDING
pigpen
pigpen
substitution
{ "type": "none", "value": null }
beginner
en
104
180
cipher_museum
2.0
public
null
null
porta-146
OMDBPIZOOJRQEMI
OMDBPIZOOJRQEMI
FORWARD MARCH NOW
porta
porta
polyalphabetic
{ "type": "keyword", "value": "SECRET" }
intermediate
en
15
15
cipher_museum
0.2
public
null
null
cda-0004444
EOIDIFEOEMUCESYHNTSEDYANMEIEIUBYOYEESRROEOUNSSSTIXTWETSCIUSNCESELNCLCGITVIRRNTNNTEYTOPTHIPEEYSSPSRSDALTEIRRNEEXOEAEADACSHKHEETLXLTAEATYSINMRDCYANENXRCNCRALUTEEENKHATFARDROPAFDAOPKPPINTXCTDTEMTREAYRDETIIALOBTETGFHNDUETHNSYX
EOIDIFEOEMUCESYHNTSEDYANMEIEIUBYOYEESRROEOUNSSSTIXTWETSCIUSNCESELNCLCGITVIRRNTNNTEYTOPTHIPEEYSSPSRSDALTEIRRNEEXOEAEADACSHKHEETLXLTAEATYSINMRDCYANENXRCNCRALUTEEENKHATFARDROPAFDAOPKPPINTXCTDTEMTREAYRDETIIALOBTETGFHNDUETHNSYX
ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX
scytale
scytale
null
{ "cols": 6 }
hard
en
222
222
synthetic_educational
null
null
[ "column_count_search", "anagram_recovery" ]
Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter.
copiale-027
Q7 I8 S5 U7 H4 O6 M9 C9 N2 M5 S6 N5
Q7 I8 S5 U7 H4 O6 M9 C9 N2 M5 S6 N5
THE TRAP IS SET
copiale
copiale
substitution
{ "type": "keyword", "value": "COPIALE" }
advanced
en
24
35
cipher_museum
0.2
public
null
null
cda-0021272
.. .. ... .... ... .... . .... . ..... . .... .... ..... . ... . . .... .... .. .... ... .... ... ... . . ... . .... .... ... .... ... .... ... . .... ... . ..... ..... ... ... ..... ... . . . .. .... ... ... .... .... .. ... . ..... .. .... .... .. ... . .. .... ... .. .. .... .... ...
.. .. ... .... ... .... . .... . ..... . .... .... ..... . ... . . .... .... .. .... ... .... ... ... . . ... . .... .... ... .... ... .... ... . .... ... . ..... ..... ... ... ..... ... . . . .. .... ... ... .... .... .. ... . ..... .. .... .... .. ... . .. .... ... .. .. .... .... ...
GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS
tap_code
tap_code
null
{}
medium
en
38
38
synthetic_educational
null
null
[ "dot_count_decode", "grid_position_search" ]
Tap code: letters encoded as dot-groups representing row and column in 5×5 grid.
cda-0014004
820 852 844 840 854 817 812 835 811 999 862 856 814 856 999 801 999 811 824 819 825 859 999 855 813 850 862 813 841 807 813 999 801 855 999 859 822 814 999 853 812 846 813 801 859 826 839 819 999 830 814 873 999
820 852 844 840 854 817 812 835 811 999 862 856 814 856 999 801 999 811 824 819 825 859 999 855 813 850 862 813 841 807 813 999 801 855 999 859 822 814 999 853 812 846 813 801 859 826 839 819 999 830 814 873 999
GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY
culper_ring
culper_ring
null
{}
medium
en
44
44
synthetic_educational
null
null
[ "codebook_frequency", "number_range_analysis" ]
Culper Ring code: Washington's three-digit codebook numbers (800–999 range).
bifid-v3-0421
SEBBOPTDSITENNCBDWSVP
SEBBOPTDSITENNCBDWSVP
THE TELEGRAPH TRANSMITS
bifid
bifid
fractionation
{ "type": "keyword", "value": "JUSTICE" }
advanced
en
21
21
cipher_museum
2.0
public
null
null
enigma-v2-0158
CYKRSZLXBRKYJ
CYKRSZLXBRKYJ
E PLURIBUS UNUM
enigma
enigma
machine
{ "type": "rotor_start", "value": "DEF" }
expert
en
13
13
cipher_museum
2.0
public
null
null
autokey-v3-0151
NHZLRXJMBACFIOVLLHFYGVGBFOHWCDIOQHDLXDYMQZSEFAFQAVZWEEFAVDBGXEXGZHHBJMZGKUYVRIUFMPJIJEFR
NHZLRXJMBACFIOVLLHFYGVGBFOHWCDIOQHDLXDYMQZSEFAFQAVZWEEFAVDBGXEXGZHHBJMZGKUYVRIUFMPJIJEFR
IT IS A TRUTH UNIVERSALLY ACKNOWLEDGED THAT A SINGLE MAN IN POSSESSION OF A FORTUNE MUST BE IN WANT OF A WIFE
autokey
autokey
polyalphabetic
{ "type": "keyword", "value": "FORTRESS" }
intermediate
en
88
88
cipher_museum
2.0
public
null
null
playfair-v3-0780
NMFPDIDPOUWIODWGRMQY
NMFPDIDPOUWIODWGRMQY
THE TELESCOPE REVEALS
playfair
playfair
polygraphic
{ "type": "keyword", "value": "COURAGE" }
intermediate
en
20
20
cipher_museum
2.0
public
null
null
fialka-v3-0163
GLIHLNHUKIITRHCJFQMSGJNJUELSHFQTQIPLAJMAQJIZIGRNEDPFVZUEMWJEXFJPAJHDASZXUV
GLIHLNHUKIITRHCJFQMSGJNJUELSHFQTQIPLAJMAQJIZIGRNEDPFVZUEMWJEXFJPAJHDASZXUV
THE THIN RED LINE STOOD FIRM AT BALACLAVA AS THE RUSSIAN CAVALRY CHARGED ACROSS THE PLAIN
fialka
fialka
machine
{ "type": "seed", "value": "KREMLIN" }
expert
en
74
74
cipher_museum
2.0
public
null
null
adfgvx-v2-0369
DAFDADADAFXDXGDAVDAGFAXAXGAGGFADAAXFADDDDDVGDDAAVGAAXAXDXDXFVFDFAAFAXAVFAFDFAAFGXDAAXGXDGAXFXDFAXAAGADAVGVDXDVDDDDDXAGFFGAGDFXDXDDDXDDGXFDADDDDFFADAFVFXGFFDGDDAXDXAXFVAFAFGDDXDDDXAFAAGXADAAVAAAGVDXDDADDAFVGDADAAADAAFAFFAXDAFXAAAFGAAXGVAFFVDDGXDGDVDAADGADGFAADDAFADAAAADFXDDAXGDAFAFFAFADDFXDADAAXAADFGXAFAXDDADXDVAFADGFGX...
DAFDADADAFXDXGDAVDAGFAXAXGAGGFADAAXFADDDDDVGDDAAVGAAXAXDXDXFVFDFAAFAXAVFAFDFAAFGXDAAXGXDGAXFXDFAXAAGADAVGVDXDVDDDDDXAGFFGAGDFXDXDDDXDDGXFDADDDDFFADAFVFXGFFDGDDAXDXAXFVAFAFGDDXDDDXAFAAGXADAAVAAAGVDXDDADDAFVGDADAAADAAFAFFAXDAFXAAAFGAAXGVAFFVDDGXDGDVDAADGADGFAADDAFADAAAADFXDDAXGDAFAFFAFADDFXDADAAXAADFGXAFAXDDADXDVAFADGFGX...
FOR I AM PERSUADED THAT NEITHER DEATH NOR LIFE NOR ANGELS NOR PRINCIPALITIES NOR POWERS NOR THINGS PRESENT NOR THINGS TO COME NOR HEIGHT NOR DEPTH NOR ANY OTHER CREATURE SHALL BE ABLE TO SEPARATE US FROM THE LOVE OF GOD
adfgvx
adfgvx
fractionation
{ "polybius": "TRIUMPH", "columnar": "JUSTICE" }
advanced
en
358
358
cipher_museum
2.0
public
null
null
purple-v2-0235
KCYZSBJIHUODUYWOORYCXJNLSWETXNSRQOSEQTLQEAUBXHUGBUNCIJANIKOEGXMYTLNMSUXBBRNTMRFHNYUUGPOMHYORWQQBPTONMUXTNKOIYTRODLLWTPUOSJCJTJONBLGTFJNWFCNBXJNMGHNUGXPDUENOCUHJRCCT
KCYZSBJIHUODUYWOORYCXJNLSWETXNSRQOSEQTLQEAUBXHUGBUNCIJANIKOEGXMYTLNMSUXBBRNTMRFHNYUUGPOMHYORWQQBPTONMUXTNKOIYTRODLLWTPUOSJCJTJONBLGTFJNWFCNBXJNMGHNUGXPDUENOCUHJRCCT
WE THEREFORE THE REPRESENTATIVES OF THE UNITED STATES OF AMERICA IN GENERAL CONGRESS ASSEMBLED APPEALING TO THE SUPREME JUDGE OF THE WORLD FOR THE RECTITUDE OF OUR INTENTIONS DO SOLEMNLY PUBLISH
purple
purple
machine
{ "type": "seed", "value": "YAMAMOTO" }
expert
en
164
164
cipher_museum
2.0
public
null
null
cda-0017760
16 21 2 12 9 3 9 14 6 18 1 19 20 18 21 3 20 21 18 5 4 5 19 5 18 22 5 19 3 1 18 5 6 21 12 4 5 19 9 7 14 8 9 19 20 15 18 9 3 1 12 3 9 16 8 5 18 19 1 18 5 20 5 1 3 8 5 18 19 14 15 20 16 18 15 20 5 3 20 9 15 14
16 21 2 12 9 3 9 14 6 18 1 19 20 18 21 3 20 21 18 5 4 5 19 5 18 22 5 19 3 1 18 5 6 21 12 4 5 19 9 7 14 8 9 19 20 15 18 9 3 1 12 3 9 16 8 5 18 19 1 18 5 20 5 1 3 8 5 18 19 14 15 20 16 18 15 20 5 3 20 9 15 14
PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION
aeneas_tacticus
aeneas_tacticus
null
{}
hard
en
82
82
synthetic_educational
null
null
[ "sequential_number_decode", "frequency_analysis" ]
Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26.
cda-0018419
6368 2536 01599 6330 5694 02911 6282 2575 1586 04175 2848 6649 6009 0986 02861 5059 02547 1628 5659 00365 1331 07003 00400 4491 00979 1614 6039 6352 02557 1624 0326 03819 05028 02581 00394 00667 1572 6361 00662 07949 4721 04446 1622 05048 04808 6048 02923 06292 02830 4765 4485 01662 0369 00985 2564 03791 1641 06294 063...
6368 2536 01599 6330 5694 02911 6282 2575 1586 04175 2848 6649 6009 0986 02861 5059 02547 1628 5659 00365 1331 07003 00400 4491 00979 1614 6039 6352 02557 1624 0326 03819 05028 02581 00394 00667 1572 6361 00662 07949 4721 04446 1622 05048 04808 6048 02923 06292 02830 4765 4485 01662 0369 00985 2564 03791 1641 06294 063...
THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER
zimmermann
zimmermann
null
{}
hard
en
104
104
synthetic_educational
null
null
[ "codebook_frequency", "number_group_analysis" ]
Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher.
null-cipher-v2-0075
aeii on long too find now make part year aeiu has right
aeii on long too find now make part year aeiu has right
IN GOD WE TRUST
null_cipher
null_cipher
steganography
{ "type": "position", "value": "last" }
advanced
en
44
55
cipher_museum
2.0
public
null
null
cda-0018326
. . .... .... . .. . . .... ... .. ... . ..... ... ... . ... ... .... . .... . ..... .... ... . .. ..... .... .... .. . ..... ..... . . ..... .... .. .... ... .. .... ... ... .. .. .... .... .. ... . ..... . . ... . ... ..... .. ... . . . .. . ..... .... .... . ..... .... .. .... .....
. . .... .... . .. . . .... ... .. ... . ..... ... ... . ... ... .... . .... . ..... .... ... . .. ..... .... .... .. . ..... ..... . . ..... .... .. .... ... .. .... ... ... .. .. .... .... .. ... . ..... . . ... . ... ..... .. ... . . . .. . ..... .... .... . ..... .... .. .... .....
ATBASH ENCODES BY REVERSING THE ALPHABET ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS
tap_code
tap_code
null
{}
hard
en
91
91
synthetic_educational
null
null
[ "dot_count_decode", "grid_position_search" ]
Tap code: letters encoded as dot-groups representing row and column in 5×5 grid.
kama-sutra-v2-0061
YZW KGYQ ACI OYX MC JCV ACIV OCIXQVA XCQ KGYQ ACIV OCIXQVA OYX MC JCV ACI QCMYA YXM YEKYAZ
YZW KGYQ ACI OYX MC JCV ACIV OCIXQVA XCQ KGYQ ACIV OCIXQVA OYX MC JCV ACI QCMYA YXM YEKYAZ
ASK WHAT YOU CAN DO FOR YOUR COUNTRY NOT WHAT YOUR COUNTRY CAN DO FOR YOU TODAY AND ALWAYS
kama_sutra
kama_sutra
substitution
{ "type": "keyword", "value": "SANSKRIT" }
intermediate
en
72
90
cipher_museum
2.0
public
null
null
caesar-v2-1061
SBSAM TCFQSG FSDCFHSR ACJWBU HCKOFR USHHMGPIFU QOJOZFM VOG QCBTWFASR HVS TIZZ GWUVHWBU
SBSAM TCFQSG FSDCFHSR ACJWBU HCKOFR USHHMGPIFU QOJOZFM VOG QCBTWFASR HVS TIZZ GWUVHWBU
ENEMY FORCES REPORTED MOVING TOWARD GETTYSBURG CAVALRY HAS CONFIRMED THE FULL SIGHTING
caesar
caesar
substitution
{ "type": "shift", "value": 14 }
beginner
en
75
86
cipher_museum
2.0
public
null
null
wheatstone-v3-0129
NELRTTEAUKHKMWK
NELRTTEAUKHKMWK
CHART THE UNKNOWN
wheatstone
wheatstone
polygraphic
{ "type": "keyword", "value": "LONDON" }
advanced
en
15
15
cipher_museum
2.0
public
null
null
monoalphabetic-v3-0732
TDA IACELKS STHKR QAHRY
TDA IACELKS STHKR QAHRY
THE LEGIONS STAND READY
monoalphabetic
monoalphabetic
substitution
{ "type": "keyword", "value": "HONOR" }
beginner
en
20
23
cipher_museum
2.0
public
null
null
alberti-disk-v3-0432
UBTJIYCXZDKRFHNNW
UBTJIYCXZDKRFHNNW
ARCHERS TO THE WALLS
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 11 }
expert
en
17
17
cipher_museum
2.0
public
null
null
red-type-a-v3-0102
DRIKOTSODCUXTKAVURSNFEAFGJRINIDRILQSUWLIOLACWDREIVXEGANVIBLTIBDVIQGIBCEILJZUCFUHOYQIFONUHIGYYZZDRUOCYMEKZARDMIXAMIBOTEKIFBODYMEAZZVIZACZIUNTELLHPOCCAKXNIPAKFLBAZITUL
DRIKOTSODCUXTKAVURSNFEAFGJRINIDRILQSUWLIOLACWDREIVXEGANVIBLTIBDVIQGIBCEILJZUCFUHOYQIFONUHIGYYZZDRUOCYMEKZARDMIXAMIBOTEKIFBODYMEAZZVIZACZIUNTELLHPOCCAKXNIPAKFLBAZITUL
THE MANHATTAN PROJECT BROUGHT TOGETHER THE GREATEST SCIENTIFIC MINDS OF THE TWENTIETH CENTURY IN A RACE TO BUILD THE ATOMIC BOMB BEFORE NAZI GERMANY COULD DO SO THE EFFORT CHANGED THE WORLD FOREVER
red_type_a
red_type_a
machine
{ "type": "keyword", "value": "SAKURA" }
advanced
en
165
165
cipher_museum
2.0
public
null
null
cda-0021348
82 95 82 80 43 61 43 61 66 82 77 29 82 82 11 61 68 29 36 69 29 82 61 66 66 36 80 82 68 66 77 69 11 82 57 11 50 25 80 68 65 36 68 29 11 66 80 50 25 80 68 65 36 76 80 82 72 59 82 29 52 50 82 61 82 73 65 69 61 82 61 50 77 65 57 82 52 50 65 36 82 80 61 66 36 82 68 80 52 36 50 66 82 52 66 59 80 82 61 36 69 59 57 11 77 68 55...
82 95 82 80 43 61 43 61 66 82 77 29 82 82 11 61 68 29 36 69 29 82 61 66 66 36 80 82 68 66 77 69 11 82 57 11 50 25 80 68 65 36 68 29 11 66 80 50 25 80 68 65 36 76 80 82 72 59 82 29 52 50 82 61 82 73 65 69 61 82 61 50 77 65 57 82 52 50 65 36 82 80 61 66 36 82 68 80 52 36 50 66 82 52 66 59 80 82 61 36 69 59 57 11 77 68 55...
EVERY SYSTEM NEEDS AN HONEST THREAT MODEL DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS THE ARCHITECTURE SHOULD MAKE MISUSE HARDER CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS
wallis_cipher
wallis_cipher
null
{}
hard
en
160
160
synthetic_educational
null
null
[ "number_substitution_decode", "frequency_analysis" ]
Wallis cipher: each letter mapped to a unique two-digit number from a fixed table.