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stringlengths
6
2.11k
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stringlengths
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282
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stringclasses
81 values
cipher
stringclasses
81 values
cipher_family
stringclasses
13 values
key
unknown
difficulty
stringclasses
7 values
language
stringclasses
8 values
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int64
6
1.09k
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int64
6
1.28k
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2 values
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stringclasses
2 values
split
stringclasses
1 value
attack_methods
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0
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educational_note
stringclasses
32 values
alberti-disk-v2-0988
OPCPVJYDFLOFGWHDLNGVVALWENUVFJUDZNJWHTJJEZGGYDDSXKZJOEWMOTJUNTFDLLMPYGUFRMITZTJBP
OPCPVJYDFLOFGWHDLNGVVALWENUVFJUDZNJWHTJJEZGGYDDSXKZJOEWMOTJUNTFDLLMPYGUFRMITZTJBP
GENERAL ORDERS NUMBER ONE ALL COMMUNICATIONS SHALL BE ENCRYPTED USING THE APPROVED CIPHER DISK
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 17 }
expert
en
81
81
cipher_museum
2.0
public
null
null
enigma-254
XADLYQCUMEHKHTGA
XADLYQCUMEHKHTGA
ALL IS LOST RETREAT
enigma
enigma
machine
{ "type": "rotor_start", "value": "CAT" }
expert
en
16
16
cipher_museum
0.2
public
null
null
trifid-v2-0421
FWRNUYXUAMH+RPICWGG+S+YAHR+JLDUXQOVU+RPUXFLPIDQVFGNAFRY
FWRNUYXUAMH+RPICWGG+S+YAHR+JLDUXQOVU+RPUXFLPIDQVFGNAFRY
BREVITY IS THE SOUL OF WIT AND TEDIOUSNESS THE OUTWARD FLOURISHES
trifid
trifid
fractionation
{ "type": "keyword", "value": "FREEDOM" }
advanced
en
55
55
cipher_museum
2.0
public
null
null
m94-v2-0004
QUXDZJTCDBCONO
QUXDZJTCDBCONO
STORM THE BREACH
m94
m94
machine
{ "type": "seed", "value": "ARMY" }
expert
en
14
14
cipher_museum
2.0
public
null
null
autokey-v2-0716
MYMEMHPLRMDEKBXSVWWJXUMNWWUWTUUXRFWWJIHRVIJFWQIMLVWMLPXUKDLMQEIOZLBJRZKOTUIIOGG
MYMEMHPLRMDEKBXSVWWJXUMNWWUWTUUXRFWWJIHRVIJFWQIMLVWMLPXUKDLMQEIOZLBJRZKOTUIIOGG
THE KASISKI TEST FINDS REPEATED SEQUENCES TO DETERMINE THE KEY LENGTH OF A VIGENERE CIPHER KEY
autokey
autokey
polyalphabetic
{ "type": "keyword", "value": "TRIUMPH" }
intermediate
en
79
79
cipher_museum
2.0
public
null
null
cda-0017344
AAAAA ABBAA AAAAA AABAB AABAB ABAAA ABBAA AABAA AAABA ABAAA ABBBA AABBB AABAA BAAAA AAAAA ABBBA ABBBA ABABA ABAAA AABAA BAAAB AAAAA ABABA ABAAA ABBAA AABAA AAAAA BAAAA AABAB BAABB ABBAA AAABA BAABA ABAAA ABBAB ABBAA BAABA ABBAB AABAA AAAAA AAABA AABBB ABABA AABAA BAABA BAABA AABAA BAAAA BAABA AABBB AABAA AAABB AABAA BA...
AAAAA ABBAA AAAAA AABAB AABAB ABAAA ABBAA AABAA AAABA ABAAA ABBBA AABBB AABAA BAAAA AAAAA ABBBA ABBBA ABABA ABAAA AABAA BAAAB AAAAA ABABA ABAAA ABBAA AABAA AAAAA BAAAA AABAB BAABB ABBAA AAABA BAABA ABAAA ABBAB ABBAA BAABA ABBAB AABAA AAAAA AAABA AABBB ABABA AABAA BAABA BAABA AABAA BAAAA BAABA AABBB AABAA AAABB AABAA BA...
AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS
bacon_cipher
bacon_cipher
null
{}
hard
en
465
465
synthetic_educational
null
null
[ "five_bit_decode", "ab_frequency_analysis" ]
Bacon's biliteral cipher: each letter encoded as 5-bit A/B string.
hist-lorenz-fish-001
YZRWBQKXHMATVUFGCPLSDIENOJ
YZRWBQKXHMATVUFGCPLSDIENOJ
KEINE BESONDEREN EREIGNISSE
lorenz
lorenz
machine
{ "wheel_sizes": "43 47 51 53 59 37 61 41 31 29 26", "chi_settings": "default", "psi_settings": "default" }
expert
de
26
26
cipher_museum
0.2
public
null
null
sigaba-v2-0031
MSJPPLSAUBLB
MSJPPLSAUBLB
VENI VIDI VICI
sigaba
sigaba
machine
{ "type": "seed", "value": "ECMMARK" }
expert
en
12
12
cipher_museum
2.0
public
null
null
cda-0021721
- .... . / -... .. ..-. .. -.. / -.-. .. .--. .... . .-. / -.-. --- -- -... .. -. . ... / .- / .--. --- .-.. -.-- -... .. ..- ... / ... --.- ..- .- .-. . / .-- .. - .... / - .-. .- -. ... .--. --- ... .. - .. --- -. / - .... . / - .-. .. - .... . -- .. ..- ... / -.-. .. .--. .... . .-. / .- -.. ...- .- -. -.-. . ... / ...
- .... . / -... .. ..-. .. -.. / -.-. .. .--. .... . .-. / -.-. --- -- -... .. -. . ... / .- / .--. --- .-.. -.-- -... .. ..- ... / ... --.- ..- .- .-. . / .-- .. - .... / - .-. .- -. ... .--. --- ... .. - .. --- -. / - .... . / - .-. .. - .... . -- .. ..- ... / -.-. .. .--. .... . .-. / .- -.. ...- .- -. -.-. . ... / ...
THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER SLOWLY
morse_code
morse_code
null
{}
hard
en
121
121
synthetic_educational
null
null
[ "symbol_decode", "frequency_analysis" ]
Morse code: dots and dashes; word-separated by / symbol.
cda-0016812
⌐ K ┌· ⌐ ─ X ┐· ⌐ ┌· L ─ K K ┘· ┘· └ X r· ┘· X· └ Γ X r· ┘· ⌒ Γ· K X ┌· L ⌐ X ┘· ─ Γ· ─ ¬· ⌐ X K ┌· ┘· ─ ¬· r └ ⌐ Γ· ┌ ─ L L Γ X X K ┌· ┘· ─ ¬· L K· Γ· Γ L ─ r L
⌐ K ┌· ⌐ ─ X ┐· ⌐ ┌· L ─ K K ┘· ┘· └ X r· ┘· X· └ Γ X r· ┘· ⌒ Γ· K X ┌· L ⌐ X ┘· ─ Γ· ─ ¬· ⌐ X K ┌· ┘· ─ ¬· r └ ⌐ Γ· ┌ ─ L L Γ X X K ┌· ┘· ─ ¬· L K· Γ· Γ L ─ r L
A TRANSPARENT TOOL SHOULD SHOW ITS REASONING A STRONG CLAIM NEEDS STRONG EVIDENCE
pigpen
pigpen
null
{}
easy
en
27
27
synthetic_educational
null
null
[ "symbol_frequency", "grid_position_decode" ]
Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids.
great-cipher-v3-0134
117 143 111 179 158 139 128 161 167 147 180 163 117 126 138 160 126 132 134 158 139 128
117 143 111 179 158 139 128 161 167 147 180 163 117 126 138 160 126 132 134 158 139 128
TAXATION WITHOUT REPRESENTATION
great_cipher
great_cipher
nomenclator
{ "type": "seed", "value": "ROSSIGNOL" }
expert
en
66
87
cipher_museum
2.0
public
null
null
gronsfeld-v2-0609
VLKZEIMSMNVAOTLJSRLIVWVWSKXOWNWRZQLTIOVFQVIMMGRZAATVODEHVUUTJIKISVIXVCQQSINFTUATJIXM
VLKZEIMSMNVAOTLJSRLIVWVWSKXOWNWRZQLTIOVFQVIMMGRZAATVODEHVUUTJIKISVIXVCQQSINFTUATJIXM
THE REGIMENT WILL HOLD ITS POSITION UNTIL REINFORCEMENTS ARRIVE FROM THE EASTERN COMMAND POST HERE
gronsfeld
gronsfeld
polyalphabetic
{ "type": "numeric", "value": "24680" }
intermediate
en
84
84
cipher_museum
2.0
public
null
null
playfair-v2-0502
UGZPUEEOEUDBNDOQBV
UGZPUEEOEUDBNDOQBV
NOVUS ORDO SECLORUM
playfair
playfair
polygraphic
{ "type": "keyword", "value": "FREEDOM" }
intermediate
en
18
18
cipher_museum
2.0
public
null
null
rail-fence-v2-0657
HONORABOVEALL
HONORABOVEALL
HONOR ABOVE ALL
rail_fence
rail_fence
transposition
{ "type": "integer", "value": 12 }
intermediate
en
13
13
cipher_museum
2.0
public
null
null
nihilist-014
49 60 89 48 38 89 76 38 99 45 50 99 45 50 69 79
49 60 89 48 38 89 76 38 99 45 50 99 45 50 69 79
ALL IS LOST RETREAT
nihilist
nihilist
fractionation
{ "polybius": "RUSSIAN", "keyword": "KEY" }
advanced
en
32
47
cipher_museum
0.2
public
null
null
cda-0006450
RTOF HECV ERES KNLE WODG EELH TIBR XXXY XXXM UMON ITYP RARE S
RTOF HECV ERES KNLE WODG EELH TIBR XXXY XXXM UMON ITYP RARE S
THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY
double_transposition
double_transposition
null
{ "key1": "LIBERTY", "key2": "FREEDOM" }
medium
en
49
49
synthetic_educational
null
null
[ "key_length_search", "anagram_recovery" ]
Double columnar transposition: apply columnar twice for stronger security.
stager-route-v2-0370
AVROETITSREEAULAOEHATLFEILLDEWGHNEWWRTLSSENHTOEAHPEGADAIEATHOLCIXXNAAIIHQICRIULNTHNUERNNLOXXULGTDRIHTSTISOOHATATHUERXXSDAEHNABENTDIHEBINDOIGCGX
AVROETITSREEAULAOEHATLFEILLDEWGHNEWWRTLSSENHTOEAHPEGADAIEATHOLCIXXNAAIIHQICRIULNTHNUERNNLOXXULGTDRIHTSTISOOHATATHUERXXSDAEHNABENTDIHEBINDOIGCGX
ALL GAUL IS DIVIDED INTO THREE PARTS ONE OF WHICH THE BELGAE INHABIT THE AQUITANI ANOTHER AND THE THIRD THOSE WHO IN THEIR OWN LANGUAGE ARE CALLED CELTS IN OURS GAULS
stager_route
stager_route
transposition
{ "type": "integer", "value": 11 }
expert
en
143
143
cipher_museum
2.0
public
null
null
enigma-v3-0189
MQBHVDGQBMPGHAIDCRMAGKQJPLXEBKDEUYVCWXLKJYDYEOWDNUDDZFUMADNYLLJCVAJBOVJQZBGSN
MQBHVDGQBMPGHAIDCRMAGKQJPLXEBKDEUYVCWXLKJYDYEOWDNUDDZFUMADNYLLJCVAJBOVJQZBGSN
THE POWERS NOT DELEGATED TO THE UNITED STATES BY THE CONSTITUTION ARE RESERVED TO THE STATES
enigma
enigma
machine
{ "type": "rotor_start", "value": "DEF" }
expert
en
77
77
cipher_museum
2.0
public
null
null
cda-0021247
7.4.8 7.4.1 4.1.9 11.5.10 10.5.10 2.3.1 19.2.10 17.4.1 15.6.7 17.3.10 3.4.2 6.2.6 13.2.10 15.3.10 15.6.6 18.1.9 4.6.2 11.4.5 20.5.1 10.3.1 4.4.4 13.5.10 1.1.4 20.2.8 8.3.1 1.3.7 14.5.3 8.3.4 17.5.5 6.1.10 19.1.8 4.5.5 12.3.10 14.3.6 20.2.10 6.2.3 6.3.9 4.4.10 1.1.5 5.3.3 18.4.7 17.3.2 12.1.6 4.2.8 10.4.10
7.4.8 7.4.1 4.1.9 11.5.10 10.5.10 2.3.1 19.2.10 17.4.1 15.6.7 17.3.10 3.4.2 6.2.6 13.2.10 15.3.10 15.6.6 18.1.9 4.6.2 11.4.5 20.5.1 10.3.1 4.4.4 13.5.10 1.1.4 20.2.8 8.3.1 1.3.7 14.5.3 8.3.4 17.5.5 6.1.10 19.1.8 4.5.5 12.3.10 14.3.6 20.2.10 6.2.3 6.3.9 4.4.10 1.1.5 5.3.3 18.4.7 17.3.2 12.1.6 4.2.8 10.4.10
CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING
arnold_andre
arnold_andre
null
{}
medium
en
45
45
synthetic_educational
null
null
[ "book_cipher_attack", "triple_index_search" ]
Arnold-André book cipher: coordinates (page.section.word) referencing a shared text.
polybius-de-003
11 31 31 15 32 15 33 43 13 23 15 33 43 24 33 14 21 42 15 24 45 33 14 22 31 15 24 13 23 11 33 52 45 42 14 15 45 33 14 42 15 13 23 44 15 33 22 15 12 34 42 15 33
11 31 31 15 32 15 33 43 13 23 15 33 43 24 33 14 21 42 15 24 45 33 14 22 31 15 24 13 23 11 33 52 45 42 14 15 45 33 14 42 15 13 23 44 15 33 22 15 12 34 42 15 33
ALLE MENSCHEN SIND FREI UND GLEICH AN WURDE UND RECHTEN GEBOREN
polybius
polybius
substitution
{ "type": "none", "value": null }
beginner
de
106
158
cipher_museum
0.2
public
null
null
adfgx-v2-0440
AXAFXDAADGGDGFDFAGAAGFDDXADDFAGAAFGXGAAFFDAXGGGGGADXFFDGAGDAXXGGDFGADFDGAGDDAGGDDGGXFDGXGDXAGAFADFGDDAXDAGGGFGDXGFFADDDADGDAADAFFAADDFGFDGGAFGGDAGDGFAFG
AXAFXDAADGGDGFDFAGAAGFDDXADDFAGAAFGXGAAFFDAXGGGGGADXFFDGAGDAXXGGDFGADFDGAGDDAGGDDGGXFDGXGDXAGAFADFGDDAXDAGGGFGDXGFFADDDADGDAADAFFAADDFGFDGGAFGGDAGDGFAFG
MARY QUEEN OF SCOTS WAS BEHEADED AFTER HER CIPHER LETTERS WERE DECODED BY THOMAS PHELIPPES
adfgx
adfgx
fractionation
{ "polybius": "DRAGON", "columnar": "THUNDER" }
advanced
en
152
152
cipher_museum
2.0
public
null
null
cardano-autokey-163
LALUKCKMLSFKJSTLGDGBHGJZVKALPLZXBRUTRERKALVZDZV
LALUKCKMLSFKJSTLGDGBHGJZVKALPLZXBRUTRERKALVZDZV
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG NEAR THE RIVER
cardano_autokey
cardano_autokey
polyalphabetic
{ "type": "keyword", "value": "SECRET" }
advanced
en
47
47
cipher_museum
0.2
public
null
null
null-cipher-v2-0064
that each have follow utna tell will its through aeia eiov made take utna her its
that each have follow utna tell will its through aeia eiov made take utna her its
THE WALLS HAVE EARS
null_cipher
null_cipher
steganography
{ "type": "position", "value": "last" }
advanced
en
66
81
cipher_museum
2.0
public
null
null
cda-0018520
BE / A-KHA / NO-DA-IH / SHUSH / DIBEH-YAZZIE / DZEH / THAN-ZIE / GAH / WOL-LA-CHEE / TSAH / DIBEH / CLA-GI-AIH / A-KHA / DIBEH / TKIN / THAN-ZIE / TKIN / A-KHA / TSAH / WOL-LA-CHEE / CLA-GI-AIH / CLA-GI-AIH / DIBEH-YAZZIE / TKIN...
BE / A-KHA / NO-DA-IH / SHUSH / DIBEH-YAZZIE / DZEH / THAN-ZIE / GAH / WOL-LA-CHEE / TSAH / DIBEH / CLA-GI-AIH / A-KHA / DIBEH / TKIN / THAN-ZIE / TKIN / A-KHA / TSAH / WOL-LA-CHEE / CLA-GI-AIH / CLA-GI-AIH / DIBEH-YAZZIE / TKIN...
DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER EVERY SYSTEM NEEDS AN HONEST THREAT MODEL GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY
navajo_code
navajo_code
null
{}
hard
en
233
233
synthetic_educational
null
null
[ "codebook_frequency", "word_list_attack" ]
Navajo Code Talker cipher: Navajo words represent English letters.
cda-0013785
15.3.4 4.6.10 11.2.2 9.2.4 14.4.8 13.4.8 14.6.3 4.6.8 10.5.6 13.4.7 13.6.5 20.5.1 6.4.6 20.3.5 3.3.10 1.6.6 4.4.5 17.6.6 12.4.1 5.4.5 3.4.3 17.1.3 12.1.3 13.6.2 4.1.7 20.1.8 19.3.2 6.2.5 10.3.2 17.6.2 13.5.9 6.6.5 6.3.6 6.5.7 4.5.10 20.2.10 10.6.4 6.3.4 20.3.10 9.2.4 19.3.3 5.3.6 3.5.7 13.1.4 4.4.6 9.2.1 16.4.6 11.6.3 ...
15.3.4 4.6.10 11.2.2 9.2.4 14.4.8 13.4.8 14.6.3 4.6.8 10.5.6 13.4.7 13.6.5 20.5.1 6.4.6 20.3.5 3.3.10 1.6.6 4.4.5 17.6.6 12.4.1 5.4.5 3.4.3 17.1.3 12.1.3 13.6.2 4.1.7 20.1.8 19.3.2 6.2.5 10.3.2 17.6.2 13.5.9 6.6.5 6.3.6 6.5.7 4.5.10 20.2.10 10.6.4 6.3.4 20.3.10 9.2.4 19.3.3 5.3.6 3.5.7 13.1.4 4.4.6 9.2.1 16.4.6 11.6.3 ...
A TRANSPARENT TOOL SHOULD SHOW ITS REASONING THE MESSAGE WAS HIDDEN BUT NOT SECURE
arnold_andre
arnold_andre
null
{}
medium
en
69
69
synthetic_educational
null
null
[ "book_cipher_attack", "triple_index_search" ]
Arnold-André book cipher: coordinates (page.section.word) referencing a shared text.
cda-0006063
TETLTXCCFCHSASKDINEEYRHRTNATISSESEEHEEEDFIIIRSSAXAOIPRTCTEMYMRTAHKEETESHSAXCEXSKAIASEIHHTYEGCPTTTTTLCUXLPDEXNTNDOWTULMMEMWELNTHRAOYTIHFIYRIE
TETLTXCCFCHSASKDINEEYRHRTNATISSESEEHEEEDFIIIRSSAXAOIPRTCTEMYMRTAHKEETESHSAXCEXSKAIASEIHHTYEGCPTTTTTLCUXLPDEXNTNDOWTULMMEMWELNTHRAOYTIHFIYRIE
FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF
double_transposition
double_transposition
null
{ "key1": "JUSTICE", "key2": "FREEDOM" }
hard
en
140
140
synthetic_educational
null
null
[ "key_length_search", "anagram_recovery" ]
Double columnar transposition: apply columnar twice for stronger security.
confederate-vigenere-v2-0170
TWYHDRFGZMOHZMGLDMUIQTBUVBJLUFQHRBJZFVRYRTKHZHAHMMTAMGGHUMCATPHWFVEL
TWYHDRFGZMOHZMGLDMUIQTBUVBJLUFQHRBJZFVRYRTKHZHAHMMTAMGGHUMCATPHWFVEL
COWARDS DIE MANY TIMES BEFORE THEIR DEATHS THE VALIANT NEVER TASTE DEATH BUT ONCE
confederate_vigenere
confederate_vigenere
polyalphabetic
{ "type": "keyword", "value": "RICHMOND" }
intermediate
en
68
68
cipher_museum
2.0
public
null
null
cda-0017936
THEON ETIME PADIX THEOX ETICA LLYUX BREAK ABLEZ FUSED CORRX CTLYE
THEON ETIME PADIX THEOX ETICA LLYUX BREAK ABLEZ FUSED CORRX CTLYE
THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY
commercial_code
commercial_code
null
{}
medium
en
55
55
synthetic_educational
null
null
[ "codebook_frequency", "five_letter_group_analysis" ]
Commercial code: five-letter groups from a codebook, often ending in X or Z.
chaocipher-v2-0460
NYSHUIQWZHEICIACWLQKZZQMYVYZZWAODETTNYGDQYHLIOAMPASKSBDEZCWYOHHALUSJWLFJLKBLXMLMM
NYSHUIQWZHEICIACWLQKZZQMYVYZZWAODETTNYGDQYHLIOAMPASKSBDEZCWYOHHALUSJWLFJLKBLXMLMM
THOSE WHO CANNOT REMEMBER THE PAST ARE CONDEMNED TO REPEAT IT AS PHILOSOPHER SANTAYANA OBSERVED
chaocipher
chaocipher
machine
{ "type": "keyword", "value": "JUSTICE" }
advanced
en
81
81
cipher_museum
2.0
public
null
null
confederate-vigenere-v2-0711
JJUOJWUKOJVGHHFLZSZVVKFELVGNWPKJFNYKOPTOWQCCRVZUYXBFCYXQGXLJZZIDVSEASSRTYXTYYSYJY
JJUOJWUKOJVGHHFLZSZVVKFELVGNWPKJFNYKOPTOWQCCRVZUYXBFCYXQGXLJZZIDVSEASSRTYXTYYSYJY
OBSERVATION EXPERIMENT AND REASON ARE THE THREE PILLARS OF ALL SCIENTIFIC INQUIRY AND PROGRESS
confederate_vigenere
confederate_vigenere
polyalphabetic
{ "type": "keyword", "value": "VICKSBURG" }
intermediate
en
81
81
cipher_museum
2.0
public
null
null
joseon-yeokhak-v3-0329
LZWCAFYVWESFVKXWSDLQ
LZWCAFYVWESFVKXWSDLQ
THE KING DEMANDS FEALTY
joseon_yeokhak
joseon_yeokhak
substitution
{ "type": "keyword", "value": "DYNASTY" }
beginner
en
20
20
cipher_museum
2.0
public
null
null
confederate-vigenere-v2-0075
FHRTLKAFIEFSUCSPSWZRZCRCAJAKWKXITJAWMITFDTRFICSKXZXLRTFSFMLVQAFVLVFYPRZKGQKEQ
FHRTLKAFIEFSUCSPSWZRZCRCAJAKWKXITJAWMITFDTRFICSKXZXLRTFSFMLVQAFVLVFYPRZKGQKEQ
THE REGIMENT SHALL ADVANCE AT FIRST LIGHT SUPPORTED BY ARTILLERY ON THE EASTERN FLANK TODAY
confederate_vigenere
confederate_vigenere
polyalphabetic
{ "type": "keyword", "value": "MANCHESTER" }
intermediate
en
77
77
cipher_museum
2.0
public
null
null
kl7-211
XZUJRTZCZFYAZMFAVXKUMKAURPXTVBRZJKOLKTNETUNIXRCQQRXGIKCCK
XZUJRTZCZFYAZMFAVXKUMKAURPXTVBRZJKOLKTNETUNIXRCQQRXGIKCCK
WE HOLD THESE TRUTHS TO BE SELF EVIDENT THAT ALL MEN ARE CREATED EQUAL
kl7
kl7
machine
{ "type": "seed", "value": "MUSEUM" }
expert
en
57
57
cipher_museum
0.2
public
null
null
straddling-checkerboard-116
745724535293275292372459281725227172207257112829622567229232968208296535623507292812928571722021271714259717210512871965222985717210726202870912717276362973122523296724502988292822523528715362982972572452452856202774527232065
745724535293275292372459281725227172207257112829622567229232968208296535623507292812928571722021271714259717210512871965222985717210726202870912717276362973122523296724502988292822523528715362982972572452452856202774527232065
WE THE PEOPLE OF THE UNITED STATES IN ORDER TO FORM A MORE PERFECT UNION ESTABLISH JUSTICE INSURE DOMESTIC TRANQUILITY PROVIDE FOR THE COMMON DEFENSE PROMOTE THE GENERAL WELFARE
straddling_checkerboard
straddling_checkerboard
substitution
{ "type": "top_row", "value": "CIPHERMUS" }
advanced
en
225
225
cipher_museum
0.2
public
null
null
hill-v2-0112
DVNMHXPKTSKWDCWUBCCBWAJNTGDPPYXSSYPYNAGXDXQCWBKSKKUMUURSGSGWNAGXSYPYJYQERCMAYBXZAOIAUMUURSGSYSNAXTZXSYPYTQMITSHKHXICGWTZKYYEOXGSHKAGXMVQNPSYMITSPKZIOSFV
DVNMHXPKTSKWDCWUBCCBWAJNTGDPPYXSSYPYNAGXDXQCWBKSKKUMUURSGSGWNAGXSYPYJYQERCMAYBXZAOIAUMUURSGSYSNAXTZXSYPYTQMITSHKHXICGWTZKYYEOXGSHKAGXMVQNPSYMITSPKZIOSFV
ALL WARFARE IS BASED ON DECEPTION HENCE WHEN ABLE TO ATTACK WE MUST SEEM UNABLE WHEN USING OUR FORCES WE MUST SEEM INACTIVE WHEN WE ARE NEAR WE MUST MAKE THE ENEMY BELIEVE WE ARE FAR AWAY
hill
hill
polygraphic
{ "a": 3, "b": 5, "c": 2, "d": 9 }
advanced
en
152
152
cipher_museum
2.0
public
null
null
cardano-autokey-216
MLWEALAKFCOVSSLTGKENQDLWEALQQRNNQZKAQRZQVVPJNALYCVJ
MLWEALAKFCOVSSLTGKENQDLWEALQQRNNQZKAQRZQVVPJNALYCVJ
ALL THE WORLDS A STAGE AND ALL THE MEN AND WOMEN MERELY PLAYERS
cardano_autokey
cardano_autokey
polyalphabetic
{ "type": "keyword", "value": "MUSEUM" }
advanced
en
51
51
cipher_museum
0.2
public
null
null
sigaba-101
CPPXISFLQBNKWTZWAHGESQQMIOICVCECFRIJLGFWKZSUSOS
CPPXISFLQBNKWTZWAHGESQQMIOICVCECFRIJLGFWKZSUSOS
ASK NOT WHAT YOUR COUNTRY CAN DO FOR YOU BUT WHAT YOU CAN DO
sigaba
sigaba
machine
{ "type": "seed", "value": "CIPHER" }
expert
en
47
47
cipher_museum
0.2
public
null
null
enigma-v2-0962
YIMOCHDNOWESRJPSVWBKHYMMAIWRZRJCXKMVQSDUGOAJOIWTDTHNYAEJORVGNQVIZJHEVVJWIOMXWG
YIMOCHDNOWESRJPSVWBKHYMMAIWRZRJCXKMVQSDUGOAJOIWTDTHNYAEJORVGNQVIZJHEVVJWIOMXWG
THE HEAVENS DECLARE THE GLORY OF GOD AND THE FIRMAMENT SHOWETH FORTH HIS HANDIWORK EACH NIGHT
enigma
enigma
machine
{ "type": "rotor_start", "value": "VWX" }
expert
en
78
78
cipher_museum
2.0
public
null
null
purple-v2-0071
SRXXCDOEYQWYCOSMIGLYDNAHANJPBEGBZISXYXZBFYCAKIVBXAMBLERQZIANZKW
SRXXCDOEYQWYCOSMIGLYDNAHANJPBEGBZISXYXZBFYCAKIVBXAMBLERQZIANZKW
IT WAS THE BEST OF TIMES IT WAS AN AGE OF WISDOM AND AN AGE OF UTTER FOOLISHNESS
purple
purple
machine
{ "type": "seed", "value": "TOKYO" }
expert
en
63
63
cipher_museum
2.0
public
null
null
cda-0020018
⟨w22⟩ ⟨w28⟩ ⟨a11⟩ ⟨w22⟩ ⟨a25⟩ ⟨w32⟩ ⟨a25⟩ ⟨w28⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w22⟩ ⟨w04⟩ ⟨w08⟩ ⟨a13⟩ ⟨w20⟩ ⟨w08⟩ ⟨w14⟩ ⟨a29⟩ ⟨a01⟩ ⟨w20⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a19⟩ ⟨a25⟩ ⟨w10⟩ ⟨w08⟩ ⟨a17⟩ ⟨w32⟩ ⟨a23⟩ ⟨a23⟩ ⟨w20⟩ ⟨a19⟩ ⟨w20⟩ ⟨a07⟩ ⟨a25⟩ ⟨a01⟩ ⟨w20⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a19⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w...
⟨w22⟩ ⟨w28⟩ ⟨a11⟩ ⟨w22⟩ ⟨a25⟩ ⟨w32⟩ ⟨a25⟩ ⟨w28⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w22⟩ ⟨w04⟩ ⟨w08⟩ ⟨a13⟩ ⟨w20⟩ ⟨w08⟩ ⟨w14⟩ ⟨a29⟩ ⟨a01⟩ ⟨w20⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a19⟩ ⟨a25⟩ ⟨w10⟩ ⟨w08⟩ ⟨a17⟩ ⟨w32⟩ ⟨a23⟩ ⟨a23⟩ ⟨w20⟩ ⟨a19⟩ ⟨w20⟩ ⟨a07⟩ ⟨a25⟩ ⟨a01⟩ ⟨w20⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a19⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w...
SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS CAREFULLY
babington
babington
null
{}
hard
en
197
197
synthetic_educational
null
null
[ "nomenclator_frequency", "symbol_mapping" ]
Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot.
m94-v3-0129
ZKTNWDBYTHVVEDKDDOA
ZKTNWDBYTHVVEDKDDOA
MEASURE TWICE CUT ONCE
m94
m94
machine
{ "type": "seed", "value": "FREEDOM" }
expert
en
19
19
cipher_museum
2.0
public
null
null
two-square-v2-0389
FLEESBSSNQFGFQATKEGRRC
FLEESBSSNQFGFQATKEGRRC
FLEET ASSEMBLES AT HARBOR
two_square
two_square
polygraphic
{ "key1": "DRAGON", "key2": "THUNDER" }
advanced
en
22
22
cipher_museum
2.0
public
null
null
joseon-yeokhak-v2-0428
YGGVFAYZLYGGVFAYZLHSJLAFYAKKMUZKOWWLKGJJGOLZSLAKZSDDKSQYGGVFAYZLLADDEGJJGO
YGGVFAYZLYGGVFAYZLHSJLAFYAKKMUZKOWWLKGJJGOLZSLAKZSDDKSQYGGVFAYZLLADDEGJJGO
GOOD NIGHT GOOD NIGHT PARTING IS SUCH SWEET SORROW THAT I SHALL SAY GOOD NIGHT TILL MORROW
joseon_yeokhak
joseon_yeokhak
substitution
{ "type": "keyword", "value": "DYNASTY" }
beginner
en
74
74
cipher_museum
2.0
public
null
null
kryptos-v3-0329
DUTBQQSJMEIXEZMMKZCP
DUTBQQSJMEIXEZMMKZCP
THE KING DEMANDS FEALTY
kryptos
kryptos
polyalphabetic
{ "type": "keyword", "value": "SANBORN" }
advanced
en
20
20
cipher_museum
2.0
public
null
null
porta-v3-0328
XCVYSCIEICVTMPRPE
XCVYSCIEICVTMPRPE
ARCHERS TO THE WALLS
porta
porta
polyalphabetic
{ "type": "keyword", "value": "VENICE" }
intermediate
en
17
17
cipher_museum
2.0
public
null
null
cda-0020074
VMHZ ZMTL FSET XESU WHEU PHNG WWTX VYLG BWAT LRXG MYVC JYGB LPTN MFWW UGYG HOXR WAQX KYVQ HVPQ WWHQ AAAH GHTM BQCF SMRM DJZO PIBM EGDH WHXV VEGG UKOK MAML EUFF OTL
VMHZ ZMTL FSET XESU WHEU PHNG WWTX VYLG BWAT LRXG MYVC JYGB LPTN MFWW UGYG HOXR WAQX KYVQ HVPQ WWHQ AAAH GHTM BQCF SMRM DJZO PIBM EGDH WHXV VEGG UKOK MAML EUFF OTL
DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX THE INDEX OF COINCIDENCE IS A USEFUL CLUE FAIL CLOSED IS A POSTURE NOT A SLOGAN
running_key
running_key
null
{}
hard
en
131
131
synthetic_educational
null
null
[ "index_of_coincidence", "probable_plaintext" ]
Running-key cipher: Vigenère with a very long key (e.g. a book passage).
kama-sutra-v2-0500
MYTNX RAN QRV PJYFVANE EU FUEKNA UQNI MJNYA CRANEMX REV NDNAIUEN YX ZAYMYEK R QUUG YM XNNTX MU TN MJRM MJN IUOEK JRDN RFZRIX REV ZYFF RFZRIX QN RE OEAOFI KNENARMYUE LOFF UL LUUFYXJENXX
MYTNX RAN QRV PJYFVANE EU FUEKNA UQNI MJNYA CRANEMX REV NDNAIUEN YX ZAYMYEK R QUUG YM XNNTX MU TN MJRM MJN IUOEK JRDN RFZRIX REV ZYFF RFZRIX QN RE OEAOFI KNENARMYUE LOFF UL LUUFYXJENXX
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
kama_sutra
kama_sutra
substitution
{ "type": "keyword", "value": "WISDOM" }
intermediate
en
151
184
cipher_museum
2.0
public
null
null
vic-v2-0208
9585918884189891850181958591283858589490856224869019018990854949088629090834682409081888584748310804048495510489908501828390
9585918884189891850181958591283858589490856224869019018990854949088629090834682409081888584748310804048495510489908501828390
YOUR MISSION IF YOU CHOOSE TO ACCEPT IT IS TO EXTRACT THE AGENT FROM BEHIND ENEMY LINES TONIGHT
vic
vic
substitution
{ "type": "keyword", "value": "NICKEL" }
advanced
en
124
124
cipher_museum
2.0
public
null
null
trifid-147
REEKIBCRESSJ
REEKIBCRESSJ
THE TRAP IS SET
trifid
trifid
fractionation
{ "type": "keyword", "value": "SECRET" }
advanced
en
12
12
cipher_museum
0.2
public
null
null
jn25-v3-0061
26180 26199 26199 26187 26184 26181 26180 26199 26199 26191 26184 26194 26185 26192 26188 26183 26102 26180 26104 26180 26192 26184 26197 26188 26182 26180 26193 26183 26188 26101 26184 26181 26194 26192 26181 26184 26197 26198 26183 26184 26198 26199 26197 26194 26104 26184 26183 26185 26194 26100 26197 26189 26180 26...
26180 26199 26199 26187 26184 26181 26180 26199 26199 26191 26184 26194 26185 26192 26188 26183 26102 26180 26104 26180 26192 26184 26197 26188 26182 26180 26193 26183 26188 26101 26184 26181 26194 26192 26181 26184 26197 26198 26183 26184 26198 26199 26197 26194 26104 26184 26183 26185 26194 26100 26197 26189 26180 26...
AT THE BATTLE OF MIDWAY AMERICAN DIVE BOMBERS DESTROYED FOUR JAPANESE CARRIERS IN MINUTES
jn25
jn25
codebook
{ "type": "additive", "value": "16180" }
expert
en
380
455
cipher_museum
2.0
public
null
null
kl7-v2-0476
UWUVWVTNMCBKSHXXRMAGNLHBWYEKIKJZRKJGETEVQMDURGYMCMNNNPZWZYBFUJTIOKGEUNCDDJJWWU
UWUVWVTNMCBKSHXXRMAGNLHBWYEKIKJZRKJGETEVQMDURGYMCMNNNPZWZYBFUJTIOKGEUNCDDJJWWU
LA LIBERTE GUIDANT LE PEUPLE VERS UN AVENIR MEILLEUR ET PLUS JUSTE POUR TOUS LES HOMMES LIBRES
kl7
kl7
machine
{ "type": "seed", "value": "ALLIANCE" }
expert
en
78
78
cipher_museum
2.0
public
null
null
vic-v3-0239
159479172418384580880818176187789410787815843800888085919434391541851878358414533877804889191584380156
159479172418384580880818176187789410787815843800888085919434391541851878358414533877804889191584380156
IT WAS A BRIGHT COLD DAY IN APRIL AND THE CLOCKS WERE STRIKING THIRTEEN ACROSS THE CITY
vic
vic
substitution
{ "type": "keyword", "value": "LIBERTY" }
advanced
en
102
102
cipher_museum
2.0
public
null
null
cda-0015500
11 33 11 21 21 24 33 15 13 24 35 23 15 42 11 35 35 31 24 15 43 11 31 24 33 15 11 42 21 45 33 13 44 24 34 33 44 34 15 11 13 23 31 15 44 44 15 42 24 33 14 15 53 34 21 13 34 24 33 13 24 14 15 33 13 15 32 15 11 43 45 42 15 43 31 15 44 44 15 42 21 42 15 41 45 15 33 13 54 14 24 43 44 42 24 12 45 44 24 34 33 44 23 15 34 33 15...
11 33 11 21 21 24 33 15 13 24 35 23 15 42 11 35 35 31 24 15 43 11 31 24 33 15 11 42 21 45 33 13 44 24 34 33 44 34 15 11 13 23 31 15 44 44 15 42 24 33 14 15 53 34 21 13 34 24 33 13 24 14 15 33 13 15 32 15 11 43 45 42 15 43 31 15 44 44 15 42 21 42 15 41 45 15 33 13 54 14 24 43 44 42 24 12 45 44 24 34 33 44 23 15 34 33 15...
AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS
polybius
polybius
null
{}
hard
en
206
206
synthetic_educational
null
null
[ "pair_decode", "frequency_analysis" ]
Polybius square: 5×5 grid maps letters to two-digit row-column pairs.
cda-0011847
GUR XNFVFXV RKNZVANGVBA SVAQF ERCRNGRQ GEVTENZF VA PVCUREGRKG ZBQREA RAPELCGVBA VF ABG OEBXRA OL YRGGRE SERDHRAPL GUR ZRFFNTR JNF UVQQRA OHG ABG FRPHER
GUR XNFVFXV RKNZVANGVBA SVAQF ERCRNGRQ GEVTENZF VA PVCUREGRKG ZBQREA RAPELCGVBA VF ABG OEBXRA OL YRGGRE SERDHRAPL GUR ZRFFNTR JNF UVQQRA OHG ABG FRPHER
THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY THE MESSAGE WAS HIDDEN BUT NOT SECURE
rot13
rot13
null
{ "shift": 13 }
hard
en
129
129
synthetic_educational
null
null
[]
sigaba-v3-0249
GUDUJAXMFTDVHHDIPHEZL
GUDUJAXMFTDVHHDIPHEZL
THE TELEGRAPH TRANSMITS
sigaba
sigaba
machine
{ "type": "seed", "value": "FREEDOM" }
expert
en
21
21
cipher_museum
2.0
public
null
null
cda-0021314
06379 2553 01610 4718 04397 01636 6327 2868 04169 01660 5066 00395 1353 2834 5977 6328 02514 1635 4745 05713 1644 06310 02922 1007 0376 03814 03862 07856 6652 04403 0682 05709 01659 00371 03538 00384 00723 03768 01665 02895 01958 6682 5992 01602 01271 0951 04765 5682 05743 1666 1027 06351 3805 7941
06379 2553 01610 4718 04397 01636 6327 2868 04169 01660 5066 00395 1353 2834 5977 6328 02514 1635 4745 05713 1644 06310 02922 1007 0376 03814 03862 07856 6652 04403 0682 05709 01659 00371 03538 00384 00723 03768 01665 02895 01958 6682 5992 01602 01271 0951 04765 5682 05743 1666 1027 06351 3805 7941
THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY
zimmermann
zimmermann
null
{}
medium
en
54
54
synthetic_educational
null
null
[ "codebook_frequency", "number_group_analysis" ]
Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher.
copiale-077
G2 C6 C6 S7 Q5 B0 I3 B7 X7 U4 B4 E8 R2 G3 S1
G2 C6 C6 S7 Q5 B0 I3 B7 X7 U4 B4 E8 R2 G3 S1
MEET AT THE OLD OAK
copiale
copiale
substitution
{ "type": "keyword", "value": "CIPHER" }
advanced
en
30
44
cipher_museum
0.2
public
null
null
kl7-v2-0223
DFALQFEKNDJFRLFWHLMOLRAYJBWGIWLYDCGKEFRSQASKRDGYEVIPYFZXAYFBOUYIINLHDUQIJVMVSQHZULAC
DFALQFEKNDJFRLFWHLMOLRAYJBWGIWLYDCGKEFRSQASKRDGYEVIPYFZXAYFBOUYIINLHDUQIJVMVSQHZULAC
VENONA REVEALED THAT NUMEROUS SOVIET AGENTS HAD PENETRATED THE HIGHEST LEVELS OF THE US GOVERNMENT
kl7
kl7
machine
{ "type": "seed", "value": "LIBERTY" }
expert
en
84
84
cipher_museum
2.0
public
null
null
joseon-yeokhak-v3-0167
CBRROMHVSOZZWSRTCFQSGZOBRSRCBTWJSBCFAOBRMPSOQVSGWBHVSUFSOHSGHGSOPCFBSWBJOGWCB
CBRROMHVSOZZWSRTCFQSGZOBRSRCBTWJSBCFAOBRMPSOQVSGWBHVSUFSOHSGHGSOPCFBSWBJOGWCB
ON D DAY THE ALLIED FORCES LANDED ON FIVE NORMANDY BEACHES IN THE GREATEST SEABORNE INVASION
joseon_yeokhak
joseon_yeokhak
substitution
{ "type": "keyword", "value": "JOSEON" }
beginner
en
77
77
cipher_museum
2.0
public
null
null
kryptos-v3-0133
UUTHYUEVHWNXFGKFEYDX
UUTHYUEVHWNXFGKFEYDX
THE REDCOATS ARE COMING
kryptos
kryptos
polyalphabetic
{ "type": "keyword", "value": "LANGLEY" }
advanced
en
20
20
cipher_museum
2.0
public
null
null
bazeries-v2-0346
YRGITLORNDMFGNMMRFNFOTINFYMYSXDYYILGMMTMCHDYTEFNEFGCHYVOYRLGONULTYVVLTXQCCNOPXLYMONF
YRGITLORNDMFGNMMRFNFOTINFYMYSXDYYILGMMTMCHDYTEFNEFGCHYVOYRLGONULTYVVLTXQCCNOPXLYMONF
CODED TRANSMISSION INDICATES ENEMY FORCES ASSEMBLING ALONG THE BORDER WITH HEAVY ARTILLERY UNITS
bazeries
bazeries
transposition
{ "type": "integer", "value": 37 }
advanced
en
84
84
cipher_museum
2.0
public
null
null
cda-0016124
WOLLA CHEET HANZI ESHUS HWOLL ACHEE DIBEH LINDZ EHTSA HMOAS IAKHA BEDZE HDIBE HSHUS HTSAH ASZIH GAHDZ EHAKE HDIGL INIDZ EHGAH DIBEH TKINT SAHAH JAHTH ANZIE LINDZ EHWOL LACHE EDIBE HYAZZ IECLA GIAIH LINWO LLACH EESHU SHDZE HTHAN ZIE
WOLLA CHEET HANZI ESHUS HWOLL ACHEE DIBEH LINDZ EHTSA HMOAS IAKHA BEDZE HDIBE HSHUS HTSAH ASZIH GAHDZ EHAKE HDIGL INIDZ EHGAH DIBEH TKINT SAHAH JAHTH ANZIE LINDZ EHWOL LACHE EDIBE HYAZZ IECLA GIAIH LINWO LLACH EESHU SHDZE HTHAN ZIE
ATBASH ENCODES BY REVERSING THE ALPHABET
navajo_code
navajo_code
null
{}
hard
en
193
193
synthetic_educational
null
null
[ "codebook_frequency", "word_list_attack" ]
Navajo Code Talker cipher: Navajo words represent English letters.
kl7-v3-0307
MQKTDWFUNYKBPEZLZMSKOXFGGBKWTYDHVDQTCQTRCUSXPGAQQOPTUFBZSVBABFXITGQQIYFUGGOSHJIWHSVGLJBGEZTVJCTHMXEDDWKEZQEDRRLSWBEKQZAXDCRLRKENPLFUNLHNPJEOHCWGHIYAICRXETOQGSAEPSPIDCBGZU
MQKTDWFUNYKBPEZLZMSKOXFGGBKWTYDHVDQTCQTRCUSXPGAQQOPTUFBZSVBABFXITGQQIYFUGGOSHJIWHSVGLJBGEZTVJCTHMXEDDWKEZQEDRRLSWBEKQZAXDCRLRKENPLFUNLHNPJEOHCWGHIYAICRXETOQGSAEPSPIDCBGZU
SOCRATES BELIEVED THAT THE UNEXAMINED LIFE IS NOT WORTH LIVING AND THAT WISDOM BEGINS WITH THE ADMISSION OF ONES OWN IGNORANCE THIS APPROACH TO KNOWLEDGE HAS GUIDED WESTERN PHILOSOPHY FOR TWO MILLENNIA
kl7
kl7
machine
{ "type": "seed", "value": "FREEDOM" }
expert
en
170
170
cipher_museum
2.0
public
null
null
jefferson-disk-v3-0273
CUEEHRNBJYQTZVEEMZAZJOMONTQLZCDFGEUCNGQUKBJXQMBIJJGIMYDYQCIDPJBDSSZQBERMZCNYWHAUJN
CUEEHRNBJYQTZVEEMZAZJOMONTQLZCDFGEUCNGQUKBJXQMBIJJGIMYDYQCIDPJBDSSZQBERMZCNYWHAUJN
ZERO KNOWLEDGE PROOFS ALLOW ONE PARTY TO PROVE KNOWLEDGE WITHOUT REVEALING THE KNOWLEDGE ITSELF
jefferson_disk
jefferson_disk
disk
{ "type": "disk_order", "value": "1,3,5,2,4,6" }
expert
en
82
82
cipher_museum
2.0
public
null
null
lorenz-v3-0135
THEAPPLEFALLS
THEAPPLEFALLS
THE APPLE FALLS
lorenz
lorenz
machine
{ "type": "seed", "value": "FISH" }
expert
en
13
13
cipher_museum
2.0
public
null
null
wheatstone-v2-0075
QHRNRPYFRIQOHTDDTGUTILRTQAYNOQDYPHQOSKKJNQRGEXTNQYDDRNXJIQHRRTOQRNIADTICQJGTX
QHRNRPYFRIQOHTDDTGUTILRTQAYNOQDYPHQOSKKJNQRGEXTNQYDDRNXJIQHRRTOQRNIADTICQJGTX
THE REGIMENT SHALL ADVANCE AT FIRST LIGHT SUPPORTED BY ARTILLERY ON THE EASTERN FLANK TODAY
wheatstone
wheatstone
polygraphic
{ "type": "keyword", "value": "TELEGRAPHY" }
advanced
en
77
77
cipher_museum
2.0
public
null
null
cda-0015462
EKTNJ AJGPE TASBI FFECC PJOWV KCPTE CTVHB OYBYT MSZGE HRTFD FKGHD BNUBI X
EKTNJ AJGPE TASBI FFECC PJOWV KCPTE CTVHB OYBYT MSZGE HRTFD FKGHD BNUBI X
THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER
vernam
vernam
null
{}
medium
en
61
61
synthetic_educational
null
null
[ "key_reuse_attack", "information_theoretic_proof" ]
Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP.
cda-0011267
UBCA VQVB UQQV EPQP GZUT BXGI EOMM VBGY UWCL KMGM TMPA MMVB GY
UBCA VQVB UQQV EPQP GZUT BXGI EOMM VBGY UWCL KMGM TMPA MMVB GY
SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER
gronsfeld
gronsfeld
null
{ "key": "271828" }
medium
en
50
50
synthetic_educational
null
null
[]
sigaba-v2-0439
IXAKSIMNUYCCSTNYIGNOQLHLPEHOZBOECANNUKUZHQRDHQCVWXDGRDWVOEVWPNZNSVFQSHAD
IXAKSIMNUYCCSTNYIGNOQLHLPEHOZBOECANNUKUZHQRDHQCVWXDGRDWVOEVWPNZNSVFQSHAD
ASK WHAT YOU CAN DO FOR YOUR COUNTRY NOT WHAT YOUR COUNTRY CAN DO FOR YOU TODAY AND ALWAYS
sigaba
sigaba
machine
{ "type": "seed", "value": "LIBERTY" }
expert
en
72
72
cipher_museum
2.0
public
null
null
playfair-v2-1061
FBFLWGLYGBGSPCDAPL
FBFLWGLYGBGSPCDAPL
ENEMY RETREATS NORTH
playfair
playfair
polygraphic
{ "type": "keyword", "value": "DRAGON" }
intermediate
en
18
18
cipher_museum
2.0
public
null
null
cda-0005420
UHZNA ERNQN OYRBH GCHGF UBHYQ FUBJN YYERN FBAVA TFGRC F
UHZNA ERNQN OYRBH GCHGF UBHYQ FUBJN YYERN FBAVA TFGRC F
HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS
rot13
rot13
null
{ "shift": 13 }
medium
en
46
46
synthetic_educational
null
null
[ "brute_force_26", "self_inverse_check" ]
ROT-13 is Caesar with shift 13 — it is its own inverse.
hill-v2-0514
KJTFAGTAVBVAQQHGKBOGEL
KJTFAGTAVBVAQQHGKBOGEL
BRIDGE DESTROYED AT DAWN
hill
hill
polygraphic
{ "a": 11, "b": 3, "c": 2, "d": 5 }
advanced
en
22
22
cipher_museum
2.0
public
null
null
argenti-109
31 69 77 19 32 87 46 69 24 31 32 18 30 24 70 11 31 89 76 24 45 19 36 72 30 58 31 68 69 66 78 70 19 24 45 30 53 31 89 76 46 32 77 54 19 87 68 66 24 70 30 55 89 46 88
31 69 77 19 32 87 46 69 24 31 32 18 30 24 70 11 31 89 76 24 45 19 36 72 30 58 31 68 69 66 78 70 19 24 45 30 53 31 89 76 46 32 77 54 19 87 68 66 24 70 30 55 89 46 88
TO BE OR NOT TO BE THAT IS THE QUESTION WHETHER TIS NOBLER IN THE MIND
argenti
argenti
nomenclator
{ "type": "seed", "value": "CIPHER" }
expert
en
110
164
cipher_museum
0.2
public
null
null
red-type-a-v2-0424
JPASYSISULYZOPFAHKRYJPVORUDDYDEHUFAARAESFOQLAZEMEIHBMKULTIJFWUEV
JPASYSISULYZOPFAHKRYJPVORUDDYDEHUFAARAESFOQLAZEMEIHBMKULTIJFWUEV
WHAT IS IN A NAME THAT WHICH WE CALL A ROSE BY ANY OTHER NAME WOULD SMELL AS SWEET
red_type_a
red_type_a
machine
{ "type": "keyword", "value": "MIKADO" }
advanced
en
64
64
cipher_museum
2.0
public
null
null
scytale-v2-0280
CUAENAKESXORGIDRNSXX
CUAENAKESXORGIDRNSXX
COURAGE IN DARKNESS
scytale
scytale
transposition
{ "type": "integer", "value": 10 }
intermediate
en
20
20
cipher_museum
2.0
public
null
null
double-transposition-v3-0337
HKOHUTCTREANWNN
HKOHUTCTREANWNN
CHART THE UNKNOWN
double_transposition
double_transposition
transposition
{ "key1": "DRAGON", "key2": "THUNDER" }
advanced
en
15
15
cipher_museum
2.0
public
null
null
pigpen-v2-0081
┤• ┴ ╲ ┼ ┐• ╲• ⌐ ╳ ┐ ┤• ┼• ┼ ╱• ┌• ┼ ┐• ┐ ├• ┼ ┼• ╳ ⌐ ┼• ├ ┐• ┼ ⌐ ╲ ┤• ┼• ⌐ ┐• ┼ ╳ ┬ ┼ ╳ ┬ ┐• ┼ ┼ ┌• ┐ ¬• ¬• ⌐ ┐• ╲ ┤• ┤ ⌐ ¬• ¬• ╲ ¬ ┐ ┼ ┼• ╳ ┐ ┤ ┐ ¬ ┐ ┼• ┬• ╱ ┐ ┐• ▽ ⌐ ┼• ├ ┌• ┐• ┤• ┌ ┐• ┼ ╲ ╲
┤• ┴ ╲ ┼ ┐• ╲• ⌐ ╳ ┐ ┤• ┼• ┼ ╱• ┌• ┼ ┐• ┐ ├• ┼ ┼• ╳ ⌐ ┼• ├ ┐• ┼ ⌐ ╲ ┤• ┼• ⌐ ┐• ┼ ╳ ┬ ┼ ╳ ┬ ┐• ┼ ┼ ┌• ┐ ¬• ¬• ⌐ ┐• ╲ ┤• ┤ ⌐ ¬• ¬• ╲ ¬ ┐ ┼ ┼• ╳ ┐ ┤ ┐ ¬ ┐ ┼• ┬• ╱ ┐ ┐• ▽ ⌐ ┼• ├ ┌• ┐• ┤• ┌ ┐• ┼ ╲ ╲
OBSERVATION EXPERIMENT AND REASON ARE THE THREE PILLARS OF ALL SCIENTIFIC INQUIRY AND PROGRESS
pigpen
pigpen
substitution
{ "type": "none", "value": null }
beginner
en
113
193
cipher_museum
2.0
public
null
null
m209-v3-0243
MVZEOQSXZFQTL
MVZEOQSXZFQTL
THE APPLE FALLS
m209
m209
machine
{ "type": "seed", "value": "LIBERTY" }
expert
en
13
13
cipher_museum
2.0
public
null
null
kama-sutra-v3-0043
DLZZYHL VLOLURLM OELYVEA
DLZZYHL VLOLURLM OELYVEA
MESSAGE RECEIVED CLEARLY
kama_sutra
kama_sutra
substitution
{ "type": "keyword", "value": "SANSKRIT" }
intermediate
en
22
24
cipher_museum
2.0
public
null
null
trifid-v2-0116
UCCYOSURHWYLAEJICIE+UPPEQMTSAYO+AIMCUJEOIHIDWGNQOMKQBLPAANEAZRCMAUPCKOPUUEOGDODEGUUDOFHPEZBRGQOYBAAJFOLEUDOAWOWCUEDPACWKDHAMOMGRNVLNPAVIMR+BNN+MJUXUCK+MRD+UGSJOSPKK
UCCYOSURHWYLAEJICIE+UPPEQMTSAYO+AIMCUJEOIHIDWGNQOMKQBLPAANEAZRCMAUPCKOPUUEOGDODEGUUDOFHPEZBRGQOYBAAJFOLEUDOAWOWCUEDPACWKDHAMOMGRNVLNPAVIMR+BNN+MJUXUCK+MRD+UGSJOSPKK
THE LORD IS MY SHEPHERD I SHALL NOT WANT HE MAKETH ME TO LIE DOWN IN GREEN PASTURES HE LEADETH ME BESIDE THE STILL WATERS HE RESTORETH MY SOUL HE LEADETH ME IN THE PATHS OF RIGHTEOUSNESS FOR HIS NAME SAKE
trifid
trifid
fractionation
{ "type": "keyword", "value": "PALACE" }
advanced
en
164
164
cipher_museum
2.0
public
null
null
diana-v3-0600
CAGLVJQSNYHIPWWBOIXUYFHQPCCLCQBLVWNFJKPQORUQBBUPEYSEGPCCQUFQBISJHAFOLCFCKGPVAEMOIF
CAGLVJQSNYHIPWWBOIXUYFHQPCCLCQBLVWNFJKPQORUQBBUPEYSEGPCCQUFQBISJHAFOLCFCKGPVAEMOIF
HUMINT OR HUMAN INTELLIGENCE GATHERING RELIES ON PERSONAL CONTACT AND HUMAN SOURCES IN THE FIELD
diana
diana
polyalphabetic
{ "type": "keyword", "value": "JUSTICE" }
intermediate
en
82
82
cipher_museum
2.0
public
null
null
adfgx-v2-0177
GXDXAFDFAAGDAAADGADAAXDADAAGDADAFGGAAFDDAGFDFFGXAFDGFFXGDGFGADAFAXGXDDAADXGDAAGDGFDAGGAFGGXXDGGAAXADXADXAFFDADAGAGXXDAFDGGGDXAFFXFAAAFXDAG
GXDXAFDFAAGDAAADGADAAXDADAAGDADAFGGAAFDDAGFDFFGXAFDGFFXGDGFGADAFAXGXDDAADXGDAAGDGFDAGGAFGGXXDGGAAXADXADXAFFDADAGAGXXDAFDGGGDXAFFXFAAAFXDAG
BLOOD SWEAT AND TEARS THESE ARE WHAT I OFFER YOU FOR THE DEFENSE OF OUR ISLAND NATION
adfgx
adfgx
fractionation
{ "polybius": "LIBERTY", "columnar": "FREEDOM" }
advanced
en
138
138
cipher_museum
2.0
public
null
null
alberti-disk-v3-0393
YRHLNLSGDYKIIIRRYLZWLQOBVKZZNOPCKLJMODPRVKGGNMIYSLWHZNHZRIRGJDYTQWCRQVCXWIQAWYKP
YRHLNLSGDYKIIIRRYLZWLQOBVKZZNOPCKLJMODPRVKGGNMIYSLWHZNHZRIRGJDYTQWCRQVCXWIQAWYKP
THE MOLE BURIED DEEP IN THE INTELLIGENCE AGENCY PASSED VITAL SECRETS TO THE OTHER SIDE FOR YEARS
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 10 }
expert
en
80
80
cipher_museum
2.0
public
null
null
voynich-render-020
yqungihqoncu qzfdx
yqungihqoncu qzfdx
CRYPTOGRAPHY RULES
voynich_render
voynich_render
substitution
{ "type": "none", "value": null }
expert
en
17
18
cipher_museum
0.2
public
null
null
trifid-265
QJFZQFWTAYJLJZG
QJFZQFWTAYJLJZG
SILENCE IS GOLDEN
trifid
trifid
fractionation
{ "type": "keyword", "value": "TRIFID" }
advanced
en
15
15
cipher_museum
0.2
public
null
null
slidex-v2-0301
MMMLPXFRWVOWDSVLTNFCEWVJLRXJCPAXTLKEJMMMRHMMNMRZIGPWVIBKXLLIUMSKGIPQSK
MMMLPXFRWVOWDSVLTNFCEWVJLRXJCPAXTLKEJMMMRHMMNMRZIGPWVIBKXLLIUMSKGIPQSK
THE QUALITY OF MERCY IS NOT STRAINED IT DROPPETH AS THE GENTLE RAIN FROM HEAVEN ABOVE
slidex
slidex
transposition
{ "type": "keyword", "value": "FREEDOM" }
advanced
en
70
70
cipher_museum
2.0
public
null
null
playfair-fr-031
GONORDKUONZFRPDGKUEZUKZSONFDDPGDPCITHRFBON
GONORDKUONZFRPDGKUEZUKZSONFDDPGDPCITHRFBON
LE SECRET EST L AME DE TOUTES LES GRANDES AFFAIRES
playfair
playfair
substitution
{ "type": "keyword", "value": "KEYWORD" }
intermediate
fr
42
42
cipher_museum
0.2
public
null
null
adfgx-v3-0226
FXAGAXGGDGDADFGFAFAGAAFXFDDAFAFGADDX
FXAGAXGGDGDADFGFAFAGAAFXFDDAFAFGADDX
GRAVITY EXPLAINS ALL
adfgx
adfgx
fractionation
{ "polybius": "TRIUMPH", "columnar": "JUSTICE" }
advanced
en
36
36
cipher_museum
2.0
public
null
null
cda-0004687
DPLRTYNAOOIEWSHTUSENITOMBISCCENOLTCREMEDEIOYENSETOLPVETLRNUTEETXAAMIRDHXNPNOYSRXSPANSAEX
DPLRTYNAOOIEWSHTUSENITOMBISCCENOLTCREMEDEIOYENSETOLPVETLRNUTEETXAAMIRDHXNPNOYSRXSPANSAEX
DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE EVERY SYSTEM NEEDS AN HONEST THREAT MODEL
scytale
scytale
null
{ "cols": 11 }
hard
en
88
88
synthetic_educational
null
null
[ "column_count_search", "anagram_recovery" ]
Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter.
one-time-pad-v3-0023
FVNOWFOSIQOLP
FVNOWFOSIQOLP
FULL SAIL AHEAD
one_time_pad
one_time_pad
stream
{ "type": "pad", "value": "ABCDEFGH (repeating)" }
expert
en
13
13
cipher_museum
2.0
public
null
null
cda-0020015
65 69 57 43 20 50 59 61 82 29 52 69 11 82 11 57 82 66 66 82 80 61 68 61 65 68 50 80 61 69 76 29 59 77 20 82 80 61 76 80 69 77 69 29 82 66 69 76 50 95 82 50 29 11 82 73 69 76 52 69 50 29 52 50 11 82 29 52 82 77 82 68 61 59 80 82 61 57 82 66 66 82 80 76 80 82 72 59 82 29 52 43 11 50 61 66 80 50 20 59 66 50 69 29 11 50 76...
65 69 57 43 20 50 59 61 82 29 52 69 11 82 11 57 82 66 66 82 80 61 68 61 65 68 50 80 61 69 76 29 59 77 20 82 80 61 76 80 69 77 69 29 82 66 69 76 50 95 82 50 29 11 82 73 69 76 52 69 50 29 52 50 11 82 29 52 82 77 82 68 61 59 80 82 61 57 82 66 66 82 80 76 80 82 72 59 82 29 52 43 11 50 61 66 80 50 20 59 66 50 69 29 11 50 76...
POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX
wallis_cipher
wallis_cipher
null
{}
hard
en
171
171
synthetic_educational
null
null
[ "number_substitution_decode", "frequency_analysis" ]
Wallis cipher: each letter mapped to a unique two-digit number from a fixed table.
cda-0009497
UDMUXHRXTEOAHTEKHRCRUMEXXRIHESLSAEATIDXECS
UDMUXHRXTEOAHTEKHRCRUMEXXRIHESLSAEATIDXECS
THE ARCHITECTURE SHOULD MAKE MISUSE HARDER
double_transposition
double_transposition
null
{ "key1": "JUSTICE", "key2": "PATTERN" }
medium
en
42
42
synthetic_educational
null
null
[]
chinese-telegraph-v3-0055
1346 0156 0538 0285 0856 0156 0285 1672 0538 1421 0472 0918 1503 1421 1255 0285 0729 0538 0408 0538 0918 0856 0538 1346 0729 0012 0792 0285 0012 0856 0219 1255 0285 0729 0538 0408 0538 0918 0856 1672 0538 1421 0472 0918 1503 1421 1346 0156 0538 0285 0856 0156 0285 0538 1346 0074 0729 0538 0856 0219 1346 0012 0538 0219 ...
1346 0156 0538 0285 0856 0156 0285 1672 0538 1421 0472 0918 1503 1421 1255 0285 0729 0538 0408 0538 0918 0856 0538 1346 0729 0012 0792 0285 0012 0856 0219 1255 0285 0729 0538 0408 0538 0918 0856 1672 0538 1421 0472 0918 1503 1421 1346 0156 0538 0285 0856 0156 0285 0538 1346 0074 0729 0538 0856 0219 1346 0012 0538 0219 ...
SCIENCE WITHOUT RELIGION IS LAME AND RELIGION WITHOUT SCIENCE IS BLIND SAID ALBERT EINSTEIN
chinese_telegraph
chinese_telegraph
codebook
{ "type": "none", "value": null }
expert
en
312
389
cipher_museum
2.0
public
null
null
kama-sutra-v3-0265
EK ZYSZYZEN WYX VTNKYX EQT SGKYEZTG KS QCLWY OYKAMTXRT UWMMF EK TWUQ RTYTGWEZKY WYTA
EK ZYSZYZEN WYX VTNKYX EQT SGKYEZTG KS QCLWY OYKAMTXRT UWMMF EK TWUQ RTYTGWEZKY WYTA
TO INFINITY AND BEYOND THE FRONTIER OF HUMAN KNOWLEDGE CALLS TO EACH GENERATION ANEW
kama_sutra
kama_sutra
substitution
{ "type": "keyword", "value": "INDIA" }
intermediate
en
71
84
cipher_museum
2.0
public
null
null
joseon-yeokhak-v3-0213
DZFYOESPECFXAPED
DZFYOESPECFXAPED
SOUND THE TRUMPETS
joseon_yeokhak
joseon_yeokhak
substitution
{ "type": "keyword", "value": "HANGUL" }
beginner
en
16
16
cipher_museum
2.0
public
null
null
hill-v3-0218
NCPQPRBXAAVMBLPQ
NCPQPRBXAAVMBLPQ
PER ASPERA AD ASTRA
hill
hill
polygraphic
{ "a": 7, "b": 3, "c": 4, "d": 5 }
advanced
en
16
16
cipher_museum
2.0
public
null
null
venona-pad-reuse-v3-0046
4HPFCG4O2YTKPRZ
4HPFCG4O2YTKPRZ
THE FACTORY ROARS
venona_pad_reuse
venona_pad_reuse
stream
{ "type": "keyword", "value": "PALACE" }
expert
en
15
15
cipher_museum
2.0
public
null
null
wheatstone-v2-0328
BHHUKESQMPLIAATSLTAQECKBSATPBHHYMLEKSQBKTBWBESNUPSDAPLPTAPQNPLJDECDILJJBKTKLW
BHHUKESQMPLIAATSLTAQECKBSATPBHHYMLEKSQBKTBWBESNUPSDAPLPTAPQNPLJDECDILJJBKTKLW
ALL UNITS PROCEED TO DESIGNATED RALLY POINTS AND AWAIT FURTHER ORDERS FROM HIGH COMMAND NOW
wheatstone
wheatstone
polygraphic
{ "type": "keyword", "value": "BRITAIN" }
advanced
en
77
77
cipher_museum
2.0
public
null
null
cda-0002483
ACATORTYOICMLIIBITLMOATTEEMESSXTNADWCESDESRARMTGAXXTTEAONNILCFSANNDHIXXSFKEGLBYANPUSFSERTX
ACATORTYOICMLIIBITLMOATTEEMESSXTNADWCESDESRARMTGAXXTTEAONNILCFSANNDHIXXSFKEGLBYANPUSFSERTX
A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS
stager_route
stager_route
null
{ "cols": 9 }
hard
en
90
90
synthetic_educational
null
null
[ "column_count_search", "route_pattern_search" ]
Route (Stager) cipher: write into rectangle, read via alternating column route.
rail-fence-v3-0122
TCREOEHUATRCNTHIEYR
TCREOEHUATRCNTHIEYR
TREACHERY IN THE COURT
rail_fence
rail_fence
transposition
{ "type": "integer", "value": 8 }
intermediate
en
19
19
cipher_museum
2.0
public
null
null