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
autokey-v3-0010
EECAUTTVRAVPWKRA
EECAUTTVRAVPWKRA
PER ASPERA AD ASTRA
autokey
autokey
polyalphabetic
{ "type": "keyword", "value": "PALACE" }
intermediate
en
16
16
cipher_museum
2.0
public
null
null
vic-v3-0038
85804909289809138368069291186680
85804909289809138368069291186680
MEASURE TWICE CUT ONCE
vic
vic
substitution
{ "type": "keyword", "value": "HOLLOW" }
advanced
en
32
32
cipher_museum
2.0
public
null
null
autokey-217
SCNIGQRQWIDXJWSKZOCAVJMVXTWDMDIHLRQFZHXEZA
SCNIGQRQWIDXJWSKZOCAVJMVXTWDMDIHLRQFZHXEZA
GIVE ME LIBERTY OR GIVE ME DEATH SAID PATRICK HENRY
autokey
autokey
polyalphabetic
{ "type": "keyword", "value": "MUSEUM" }
intermediate
en
42
42
cipher_museum
0.2
public
null
null
cda-0013645
BAAAA ABBAB BAABB BAABA AABAA AAABA ABAAA ABBBA AABBB AABAA BAAAA BAAAB BAAAA AABAA AAAAA AAABB AAAAA AABBA BAAAA ABAAA AAABB ABAAA ABBAA AAAAA ABBBA BAAAA AABAA BAAAB AAABA BAAAA ABAAA AAAAB AABAA AAABB AABBA AABAA ABBAB ABABB AABAA BAABA BAAAA ABAAA AAABA ABBBA AAAAA BAABA BAABA AABAA BAAAA ABBAA BAABA AABBB AABAA BA...
BAAAA ABBAB BAABB BAABA AABAA AAABA ABAAA ABBBA AABBB AABAA BAAAA BAAAB BAAAA AABAA AAAAA AAABB AAAAA AABBA BAAAA ABAAA AAABB ABAAA ABBAA AAAAA ABBBA BAAAA AABAA BAAAB AAABA BAAAA ABAAA AAAAB AABAA AAABB AABBA AABAA ABBAB ABABB AABAA BAABA BAAAA ABAAA AAABA ABBBA AAAAA BAABA BAABA AABAA BAAAA ABBAA BAABA AABBB AABAA BA...
ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN THE VIGENERE CIPHER USES A REPEATING KEYWORD TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG
bacon_cipher
bacon_cipher
null
{}
hard
en
935
935
synthetic_educational
null
null
[ "five_bit_decode", "ab_frequency_analysis" ]
Bacon's biliteral cipher: each letter encoded as 5-bit A/B string.
chaocipher-v2-0539
KUYLQKOHASCI
KUYLQKOHASCI
IN GOD WE TRUST
chaocipher
chaocipher
machine
{ "type": "keyword", "value": "TRIUMPH" }
advanced
en
12
12
cipher_museum
2.0
public
null
null
trithemius-v3-0090
TIG EMWZOLJI AMEOSEO KAIRO QFZT DQOPNYPWWC TZ UOHX WMGWOELLR ODEXV KGY AXYYQE HWQE WQJZYQCC
TIG EMWZOLJI AMEOSEO KAIRO QFZT DQOPNYPWWC TZ UOHX WMGWOELLR ODEXV KGY AXYYQE HWQE WQJZYQCC
THE BIRTHDAY PARADOX SHOWS THAT COLLISIONS IN HASH FUNCTIONS OCCUR FAR SOONER THAN EXPECTED
trithemius
trithemius
polyalphabetic
{ "type": "none", "value": null }
beginner
en
78
91
cipher_museum
2.0
public
null
null
m209-v2-0093
LXXMBEREVYCQRKDWRLBSKYOJUOMLXONKWAPAGIQOOXZRWKVZBQBBMFLIXRAXRVHAMKQEDQWLDTJQVKVOPG
LXXMBEREVYCQRKDWRLBSKYOJUOMLXONKWAPAGIQOOXZRWKVZBQBBMFLIXRAXRVHAMKQEDQWLDTJQVKVOPG
THE PACKAGE CONTAINS BLUEPRINTS FOR THE NEW TORPEDO GUIDANCE SYSTEM DELIVER TO ADMIRAL SMITH NOW
m209
m209
machine
{ "type": "seed", "value": "ARMY" }
expert
en
82
82
cipher_museum
2.0
public
null
null
solitaire-v2-0003
ZIRVKZBDEDV
ZIRVKZBDEDV
HOLD THE LINE
solitaire
solitaire
stream
{ "type": "none", "value": null }
expert
en
11
11
cipher_museum
2.0
public
null
null
typex-v3-0144
SMCGNG
SMCGNG
EUREKA
typex
typex
machine
{ "type": "keyword", "value": "BRITAIN" }
expert
en
6
6
cipher_museum
2.0
public
null
null
diana-v2-0308
XEEOIFRVVVEZDAXLMORVKYNATOTJEIBNXJEAAAAQAMXTNQAHXNNLLURXLUJOTKOYEZY
XEEOIFRVVVEZDAXLMORVKYNATOTJEIBNXJEAAAAQAMXTNQAHXNNLLURXLUJOTKOYEZY
I KNOW NOT WHAT COURSE OTHERS MAY TAKE BUT AS FOR ME GIVE ME LIBERTY OR GIVE ME DEATH
diana
diana
polyalphabetic
{ "type": "keyword", "value": "FORCES" }
intermediate
en
67
67
cipher_museum
2.0
public
null
null
cda-0021914
GSVP ZHRH PRVC ZNRM ZGRL MURM WHIV KVZG VWGI RTIZ NHRM XRKS VIGV CGRM WVCL UXLR MXRW VMXV NVZH FIVH OVGG VIUI VJFV MXBW RHGI RYFG RLMH FYHG RGFG RLMX RKSV IHNZ KVZX SOVG GVIG LZWR UUVI VMGO VGGV I
GSVP ZHRH PRVC ZNRM ZGRL MURM WHIV KVZG VWGI RTIZ NHRM XRKS VIGV CGRM WVCL UXLR MXRW VMXV NVZH FIVH OVGG VIUI VJFV MXBW RHGI RYFG RLMH FYHG RGFG RLMX RKSV IHNZ KVZX SOVG GVIG LZWR UUVI VMGO VGGV I
THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER
atbash
atbash
null
{}
hard
en
157
157
synthetic_educational
null
null
[ "self_inverse_check", "frequency_analysis" ]
Atbash maps A↔Z, B↔Y, … and is its own inverse.
porta-v2-0331
JWGCFVRFEFZKGWBZEGZQPWAYIRPRJRQWGZQQWGNOBWAVUCJPZZAWPBQAJNMQCIVSBXURAZJZPNFTURA
JWGCFVRFEFZKGWBZEGZQPWAYIRPRJRQWGZQQWGNOBWAVUCJPZZAWPBQAJNMQCIVSBXURAZJZPNFTURA
NATURE IS WRITTEN IN THE LANGUAGE OF MATHEMATICS AND ITS CHARACTERS ARE TRIANGLES AND CIRCLES
porta
porta
polyalphabetic
{ "type": "keyword", "value": "ITALY" }
intermediate
en
79
79
cipher_museum
2.0
public
null
null
cda-0013533
11.6.6 19.2.6 20.4.6 3.4.7 6.4.5 5.2.8 1.4.5 8.5.9 15.2.10 17.4.1 12.2.10 5.6.10 8.1.1 20.6.6 7.1.10 11.6.4 14.5.6 1.1.10 12.3.6 13.2.10 4.1.6 10.6.4 10.5.6 13.2.6 12.4.9 3.5.3 1.2.7 13.4.1 10.1.10 13.4.1 18.3.6 16.3.3 4.5.1 4.4.9 13.5.7 3.4.6 16.1.3 4.4.10 16.2.4 8.2.6 4.1.6 1.6.6 4.3.5 20.1.5 6.5.4 12.1.9 5.1.9 12.2....
11.6.6 19.2.6 20.4.6 3.4.7 6.4.5 5.2.8 1.4.5 8.5.9 15.2.10 17.4.1 12.2.10 5.6.10 8.1.1 20.6.6 7.1.10 11.6.4 14.5.6 1.1.10 12.3.6 13.2.10 4.1.6 10.6.4 10.5.6 13.2.6 12.4.9 3.5.3 1.2.7 13.4.1 10.1.10 13.4.1 18.3.6 16.3.3 4.5.1 4.4.9 13.5.7 3.4.6 16.1.3 4.4.10 16.2.4 8.2.6 4.1.6 1.6.6 4.3.5 20.1.5 6.5.4 12.1.9 5.1.9 12.2....
THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM
arnold_andre
arnold_andre
null
{}
hard
en
219
219
synthetic_educational
null
null
[ "book_cipher_attack", "triple_index_search" ]
Arnold-André book cipher: coordinates (page.section.word) referencing a shared text.
joseon-yeokhak-v3-0261
TSLGPYZEJPEMPRFYEZQTRSEDLTOUZSYALFWUZYPDLDESPMZYSZXXPCTNSLCOEZZVSPLGJQTCP
TSLGPYZEJPEMPRFYEZQTRSEDLTOUZSYALFWUZYPDLDESPMZYSZXXPCTNSLCOEZZVSPLGJQTCP
I HAVE NOT YET BEGUN TO FIGHT SAID JOHN PAUL JONES AS THE BONHOMME RICHARD TOOK HEAVY FIRE
joseon_yeokhak
joseon_yeokhak
substitution
{ "type": "keyword", "value": "HANGUL" }
beginner
en
73
73
cipher_museum
2.0
public
null
null
cda-0017235
THEBI FIDCZ PHERX OMBIZ ESAPX LYBIU SSQUA REWIT HTRAX SPOSI TIONZ
THEBI FIDCZ PHERX OMBIZ ESAPX LYBIU SSQUA REWIT HTRAX SPOSI TIONZ
THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION
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.
nihilist-v2-0353
75 26 48 66 44 64 45 59 62 63 96 59 57 45 27 76 58 80 34 26 73 38 50
75 26 48 66 44 64 45 59 62 63 96 59 57 45 27 76 58 80 34 26 73 38 50
CARTHAGE MUST BE DESTROYED
nihilist
nihilist
fractionation
{ "polybius": "NARODNAYA", "keyword": "VOLYA" }
advanced
en
46
68
cipher_museum
2.0
public
null
null
cda-0011109
PTFR UPVVDI VPPPT ENMPA JRFFQIOHGOU ZFVKGJGBXKPO GBIUBS WIMHUFH ULG BMTIEDFU FZ XJSFI QSUJUMPRU JOHFB QG DSJREJEIOGG NFETYTFT PFXVFS JSISVFRDC FJTXSMDVUMPR UFDYSMVZ DPBMOT TLPYNE CI UIUUFH VRFFS WDVWUJRZ
PTFR UPVVDI VPPPT ENMPA JRFFQIOHGOU ZFVKGJGBXKPO GBIUBS WIMHUFH ULG BMTIEDFU FZ XJSFI QSUJUMPRU JOHFB QG DSJREJEIOGG NFETYTFT PFXVFS JSISVFRDC FJTXSMDVUMPR UFDYSMVZ DPBMOT TLPYNE CI UIUUFH VRFFS WDVWUJRZ
OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY
gronsfeld
gronsfeld
null
{ "key": "141421" }
hard
en
177
177
synthetic_educational
null
null
[]
cda-0014147
..-. .-. . --.- ..- . -. -.-. -.-- / .- -. .- .-.. -.-- ... .. ... / -.-. .- -. / .-. . ...- . .- .-.. / .-- . .- -.- / -.-. .. .--. .... . .-. ... / -.-. .-.. .- ... ... .. -.-. .- .-.. / -.-. .. .--. .... . .-. ... / - . .- -.-. .... / .-- .... -.-- / -- --- -.. . .-. -. / ... . -.-. ..- .-. .. - -.-- / -- .- - - . ....
..-. .-. . --.- ..- . -. -.-. -.-- / .- -. .- .-.. -.-- ... .. ... / -.-. .- -. / .-. . ...- . .- .-.. / .-- . .- -.- / -.-. .. .--. .... . .-. ... / -.-. .-.. .- ... ... .. -.-. .- .-.. / -.-. .. .--. .... . .-. ... / - . .- -.-. .... / .-- .... -.-- / -- --- -.. . .-. -. / ... . -.-. ..- .-. .. - -.-- / -- .- - - . ....
FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS
morse_code
morse_code
null
{}
hard
en
82
82
synthetic_educational
null
null
[ "symbol_decode", "frequency_analysis" ]
Morse code: dots and dashes; word-separated by / symbol.
joseon-yeokhak-073
LULTFMVYJLZULHY
LULTFMVYJLZULHY
ENEMY FORCES NEAR
joseon_yeokhak
joseon_yeokhak
substitution
{ "type": "keyword", "value": "CIPHER" }
beginner
en
15
15
cipher_museum
0.2
public
null
null
lorenz-v3-0277
TRADECRAFTISTHEARTOFCONDUCTINGCOVERTOPERATIONSWITHOUTALERTINGTHEOPPOSITIONTOYOURPRESENCE
TRADECRAFTISTHEARTOFCONDUCTINGCOVERTOPERATIONSWITHOUTALERTINGTHEOPPOSITIONTOYOURPRESENCE
TRADECRAFT IS THE ART OF CONDUCTING COVERT OPERATIONS WITHOUT ALERTING THE OPPOSITION TO YOUR PRESENCE
lorenz
lorenz
machine
{ "type": "seed", "value": "COLOSSUS" }
expert
en
88
88
cipher_museum
2.0
public
null
null
voynich-render-v3-0008
gcd xdrogd edyqddx
gcd xdrogd edyqddx
THE SENATE DECREES
voynich_render
voynich_render
substitution
{ "type": "none", "value": null }
expert
en
16
18
cipher_museum
2.0
public
null
null
cda-0017516
RPFSK XOOQY WZWEJ HUGCH USFXM YVVRE FLUBL SACPO OLYID NHMVS FMHRV IQCKU XZDVN PJEPR GMMES ZDIAB ULZIE BEVEI ASEEG RVHAS DTLTI CHUVB BQWWE GEGPF MEB
RPFSK XOOQY WZWEJ HUGCH USFXM YVVRE FLUBL SACPO OLYID NHMVS FMHRV IQCKU XZDVN PJEPR GMMES ZDIAB ULZIE BEVEI ASEEG RVHAS DTLTI CHUVB BQWWE GEGPF MEB
DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE A TRANSPARENT TOOL SHOULD SHOW ITS REASONING
running_key
running_key
null
{}
hard
en
123
123
synthetic_educational
null
null
[ "index_of_coincidence", "probable_plaintext" ]
Running-key cipher: Vigenère with a very long key (e.g. a book passage).
joseon-yeokhak-117
PAPZYHAOLYMVYBZAVILOLYLKLKPJHALKAVAOLNYLHAAHZRYLTHPUPUNILMVYLBZAOHAMYVTAOLZLOVUVYLKKLHKDLAHRLPUJYLHZLKKLCVAPVUAVAOHAJHBZLMVYDOPJOAOLFNHCLAOLSHZAMBSSTLHZBYL
PAPZYHAOLYMVYBZAVILOLYLKLKPJHALKAVAOLNYLHAAHZRYLTHPUPUNILMVYLBZAOHAMYVTAOLZLOVUVYLKKLHKDLAHRLPUJYLHZLKKLCVAPVUAVAOHAJHBZLMVYDOPJOAOLFNHCLAOLSHZAMBSSTLHZBYL
IT IS RATHER FOR US TO BE HERE DEDICATED TO THE GREAT TASK REMAINING BEFORE US THAT FROM THESE HONORED DEAD WE TAKE INCREASED DEVOTION TO THAT CAUSE FOR WHICH THEY GAVE THE LAST FULL MEASURE
joseon_yeokhak
joseon_yeokhak
substitution
{ "type": "keyword", "value": "CIPHER" }
beginner
en
155
155
cipher_museum
0.2
public
null
null
cda-0010741
AVRPAUKHVJXSVSVPKVWCRFRPWNTSBZVWNIHCDFBRKHKNLHBXDPIWXATFBUSJZPGZSAEFARILLWEMIGKHMCPTUSQSLCUHMXTVVAPJTPSAHFEEQFTIVXFNHZZXMDBKBAMWAVXESNPRMKQNFSVPGQVEHUINMLWDYJ
AVRPAUKHVJXSVSVPKVWCRFRPWNTSBZVWNIHCDFBRKHKNLHBXDPIWXATFBUSJZPGZSAEFARILLWEMIGKHMCPTUSQSLCUHMXTVVAPJTPSAHFEEQFTIVXFNHZZXMDBKBAMWAVXESNPRMKQNFSVPGQVEHUINMLWDYJ
THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS THE INDEX OF COINCIDENCE IS A USEFUL CLUE
autokey
autokey
null
{ "primer": "HONEST" }
hard
en
158
158
synthetic_educational
null
null
[]
purple-063
KGYMORAWTFOAAQJJF
KGYMORAWTFOAAQJJF
THE EAGLE HAS LANDED
purple
purple
machine
{ "type": "seed", "value": "CIPHER" }
expert
en
17
17
cipher_museum
0.2
public
null
null
vic-v3-0336
90934146389383922181238386695285854939344368638941195838049185386490901692285749082686372486290169228521
90934146389383922181238386695285854939344368638941195838049185386490901692285749082686372486290169228521
TWO ROADS DIVERGED IN A YELLOW WOOD AND SORRY I COULD NOT TRAVEL BOTH AND BE ONE TRAVELER
vic
vic
substitution
{ "type": "keyword", "value": "FREEDOM" }
advanced
en
104
104
cipher_museum
2.0
public
null
null
cda-0003288
HUROH GAYNL QVCVS ERKGS NRFGV RXSMJ VGUGV SCYOV AFSKG WGFSZ SGVRC ZOLSO VEQWC USESN QELCG FBOVE FBTZS GGSEF EWZHY GONSB HFYLF VNYWO EOFLC ERFSF IRFXA AKYRR TSTCE GVRQA AZHAV GKHUR BASFW ZRCNR WGGUS BESHV POYYK IAOER OYOPY SVTGG NQQBE DSQGY L
HUROH GAYNL QVCVS ERKGS NRFGV RXSMJ VGUGV SCYOV AFSKG WGFSZ SGVRC ZOLSO VEQWC USESN QELCG FBOVE FBTZS GGSEF EWZHY GONSB HFYLF VNYWO EOFLC ERFSF IRFXA AKYRR TSTCE GVRQA AZHAV GKHUR BASFW ZRCNR WGGUS BESHV POYYK IAOER OYOPY SVTGG NQQBE DSQGY L
THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY
porta
porta
null
{ "key": "LIBRARY" }
hard
en
201
201
synthetic_educational
null
null
[ "kasiski_examination", "index_of_coincidence" ]
Porta: 13-row table polyalphabetic cipher; reciprocal (encrypt = decrypt).
nihilist-v3-0002
35 54 79 87 56 59 46 27 86 89 34 46 35 47 78 78 48 67
35 54 79 87 56 59 46 27 86 89 34 46 35 47 78 78 48 67
CROSS THE RUBICON NOW
nihilist
nihilist
fractionation
{ "polybius": "PALACE", "keyword": "BATTLE" }
advanced
en
36
53
cipher_museum
2.0
public
null
null
slidex-v3-0199
SSSAUXVEYEITOUHBSSMZCKOZHIASXDASXQGDZVWSIJYPGOMXBJWEXYOCDZJCYEITHICVRXANSSGGSCSANNZKAVWXJJGCHRABLGODNXRXGEHIDLOUQRILAVRNTYURNXGOSIYEACMZTAJVVSQRMZXQLVRYAVHDUKCUSSUROUHBHTMN
SSSAUXVEYEITOUHBSSMZCKOZHIASXDASXQGDZVWSIJYPGOMXBJWEXYOCDZJCYEITHICVRXANSSGGSCSANNZKAVWXJJGCHRABLGODNXRXGEHIDLOUQRILAVRNTYURNXGOSIYEACMZTAJVVSQRMZXQLVRYAVHDUKCUSSUROUHBHTMN
THE ARMY WILL CROSS THE DELAWARE RIVER TONIGHT AT ELEVEN OCLOCK THE MEN WILL CARRY ONLY THEIR WEAPONS AND THREE DAYS OF RATIONS MARCH ROUTES AND OBJECTIVES WILL BE DISTRIBUTED TO COMMANDERS AT THE CROSSING
slidex
slidex
transposition
{ "type": "keyword", "value": "LIBERTY" }
advanced
en
172
172
cipher_museum
2.0
public
null
null
caesar-v2-1040
S DZIFWPIG IBIA
S DZIFWPIG IBIA
E PLURIBUS UNUM
caesar
caesar
substitution
{ "type": "shift", "value": 14 }
beginner
en
13
15
cipher_museum
2.0
public
null
null
cda-0003061
SVDVX NZBBR YYOVD WUIKF UKAXA GLFVW IWZVI MSQRR FTDKD XNOAO
SVDVX NZBBR YYOVD WUIKF UKAXA GLFVW IWZVI MSQRR FTDKD XNOAO
SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER
trithemius
trithemius
null
{}
medium
en
50
50
synthetic_educational
null
null
[ "progressive_shift_detection", "frequency_analysis" ]
Trithemius: progressive Caesar (shift = letter position); no key needed.
cda-0018863
SHUSH / DZEH / WOL-LA-CHEE / NO-DA-IH / MA-E / A-KHA / GAH / THAN-ZIE / TKIN / DIBEH / THAN-ZIE / LIN / DZEH / GAH / DZEH / MOASI / TKIN / CLA-GI-AIH / GAH / A-KHA / MOASI / WOL-LA-CHEE / DIBEH-YAZZIE / A-KHA / MA-E / A-...
SHUSH / DZEH / WOL-LA-CHEE / NO-DA-IH / MA-E / A-KHA / GAH / THAN-ZIE / TKIN / DIBEH / THAN-ZIE / LIN / DZEH / GAH / DZEH / MOASI / TKIN / CLA-GI-AIH / GAH / A-KHA / MOASI / WOL-LA-CHEE / DIBEH-YAZZIE / A-KHA / MA-E / A-...
BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS HONESTLY
navajo_code
navajo_code
null
{}
hard
en
195
195
synthetic_educational
null
null
[ "codebook_frequency", "word_list_attack" ]
Navajo Code Talker cipher: Navajo words represent English letters.
red-type-a-v3-0100
AWFOFUIPHOBCSNACEDUVSMOBPIJNAOZZOCDYFPYUKRALVEZDWEFJOXDOKEVGUGCECRPINODODCJICONUWAHUREHLTGUJYRTNAYHGLUKIFIOOHATUNHOGKURXNYQRIJIXYGECUHYKHUFODIZAVIXYGUDHEHOHMUTO
AWFOFUIPHOBCSNACEDUVSMOBPIJNAOZZOCDYFPYUKRALVEZDWEFJOXDOKEVGUGCECRPINODODCJICONUWAHUREHLTGUJYRTNAYHGLUKIFIOOHATUNHOGKURXNYQRIJIXYGECUHYKHUFODIZAVIXYGUDHEHOHMUTO
IMMANUEL KANT PROPOSED THAT WE SHOULD ACT ONLY ACCORDING TO THAT MAXIM BY WHICH WE CAN AT THE SAME TIME WILL THAT IT SHOULD BECOME A UNIVERSAL LAW THIS CATEGORICAL IMPERATIVE DEFINES MORAL DUTY
red_type_a
red_type_a
machine
{ "type": "keyword", "value": "SAKURA" }
advanced
en
160
160
cipher_museum
2.0
public
null
null
kama-sutra-v2-0038
JELLQ YZZLDPELZ YQ GYVPCV
JELLQ YZZLDPELZ YQ GYVPCV
FLEET ASSEMBLES AT HARBOR
kama_sutra
kama_sutra
substitution
{ "type": "keyword", "value": "SANSKRIT" }
intermediate
en
22
25
cipher_museum
2.0
public
null
null
gronsfeld-v3-0226
AYLHJOLYFPUAOLJVBYA
AYLHJOLYFPUAOLJVBYA
TREACHERY IN THE COURT
gronsfeld
gronsfeld
polyalphabetic
{ "type": "numeric", "value": "77777" }
intermediate
en
19
19
cipher_museum
2.0
public
null
null
kryptos-v2-0449
UEJIEOALITHCSODVENEJWPHZIXBSLFOOQAPEZKRIBFGQTGLVWDMQQDSDUGARJAZ
UEJIEOALITHCSODVENEJWPHZIXBSLFOOQAPEZKRIBFGQTGLVWDMQQDSDUGARJAZ
IT WAS THE BEST OF TIMES IT WAS AN AGE OF WISDOM AND AN AGE OF UTTER FOOLISHNESS
kryptos
kryptos
polyalphabetic
{ "type": "keyword", "value": "SANBORN" }
advanced
en
63
63
cipher_museum
2.0
public
null
null
jn25-v3-0247
21244 21232 21239 21239 21258 21240 21239 21242 21233 21247 21239 21248 21244 21237 21249 21248 21230 21233 21242 21247 21243
21244 21232 21239 21239 21258 21240 21239 21242 21233 21247 21239 21248 21244 21237 21249 21248 21230 21233 21242 21247 21243
THE EXPERIMENT CONFIRMS
jn25
jn25
codebook
{ "type": "additive", "value": "11235" }
expert
en
105
125
cipher_museum
2.0
public
null
null
cda-0020471
WOLLA CHEED IBEHM OASIT SAHAS ZIHTH ANZIE WOLLA CHEED IBEHY AZZIE DZEHT KINDI BEHWO LLACH EEGAH AKHAB ENODA IHDIB EHDZE HBESH USHTS AHASZ IHDIB EHCLA GIAIH WOLLA CHEEG AHTHA NZIEW OLLAC HEETS AHDIB EHTHA NZIEA KHADZ EHTSA HMOAS IGAHT SAHAS ZIHCL AGIAI HTHAN ZIENA ASTSO SIDZE HDIBE H
WOLLA CHEED IBEHM OASIT SAHAS ZIHTH ANZIE WOLLA CHEED IBEHY AZZIE DZEHT KINDI BEHWO LLACH EEGAH AKHAB ENODA IHDIB EHDZE HBESH USHTS AHASZ IHDIB EHCLA GIAIH WOLLA CHEEG AHTHA NZIEW OLLAC HEETS AHDIB EHTHA NZIEA KHADZ EHTSA HMOAS IGAHT SAHAS ZIHCL AGIAI HTHAN ZIENA ASTSO SIDZE HDIBE H
A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES
navajo_code
navajo_code
null
{}
hard
en
236
236
synthetic_educational
null
null
[ "codebook_frequency", "word_list_attack" ]
Navajo Code Talker cipher: Navajo words represent English letters.
bifid-v2-0477
SBDDNIHDOUFHVMNF
SBDDNIHDOUFHVMNF
THE HARBOR IS CLEAR
bifid
bifid
fractionation
{ "type": "keyword", "value": "JUSTICE" }
advanced
en
16
16
cipher_museum
2.0
public
null
null
null-cipher-019
number on part right in same only name each right sentence than about know each name
number on part right in same only name each right sentence than about know each name
NO PRISONERS TAKEN
null_cipher
null_cipher
steganography
{ "type": "position", "value": "first" }
advanced
en
69
84
cipher_museum
0.2
public
null
null
vic-034
8591350918482782091249185878208591350918482329009124918587820
8591350918482782091249185878208591350918482329009124918587820
IT WAS THE BEST OF TIMES IT WAS THE WORST OF TIMES
vic
vic
substitution
{ "type": "keyword", "value": "SNOWFALL" }
advanced
en
61
61
cipher_museum
0.2
public
null
null
tap-code-v3-0018
.. .. ... .... ... . . .... .. . .... .. ... .... ... .. ... . . ..... . . . ....
.. .. ... .... ... . . .... .. . .... .. ... .... ... .. ... . . ..... . . . ....
GOLD FROM LEAD
tap_code
tap_code
substitution
{ "type": "none", "value": null }
beginner
en
58
103
cipher_museum
2.0
public
null
null
joseon-yeokhak-v3-0280
ESPWZGPZQXZYPJTDESPCZZEZQLWWPGTWMFETETDESPWZGPZQRZZOESLEXZGPDESPHZCWO
ESPWZGPZQXZYPJTDESPCZZEZQLWWPGTWMFETETDESPWZGPZQRZZOESLEXZGPDESPHZCWO
THE LOVE OF MONEY IS THE ROOT OF ALL EVIL BUT IT IS THE LOVE OF GOOD THAT MOVES THE WORLD
joseon_yeokhak
joseon_yeokhak
substitution
{ "type": "keyword", "value": "HANGUL" }
beginner
en
69
69
cipher_museum
2.0
public
null
null
kama-sutra-v3-0079
ZUHXYEZ UXQLEEUHLXOL CV ZUHUXQ UXRCERLZ UXQLVOLBQUCX YXM YXYEAZUZ CJ LELOQVCXUO OCDDIXUOYQUCXZ
ZUHXYEZ UXQLEEUHLXOL CV ZUHUXQ UXRCERLZ UXQLVOLBQUCX YXM YXYEAZUZ CJ LELOQVCXUO OCDDIXUOYQUCXZ
SIGNALS INTELLIGENCE OR SIGINT INVOLVES INTERCEPTION AND ANALYSIS OF ELECTRONIC COMMUNICATIONS
kama_sutra
kama_sutra
substitution
{ "type": "keyword", "value": "SANSKRIT" }
intermediate
en
84
94
cipher_museum
2.0
public
null
null
diana-231
CHEIJIJOOWCXYYONUZJMFZGVAUZWGZECZXQCIWZQZEKBENWEZUFGSYZPHWST
CHEIJIJOOWCXYYONUZJMFZGVAUZWGZECZXQCIWZQZEKBENWEZUFGSYZPHWST
KNOWLEDGE IS POWER AND INFORMATION IS THE KEY TO VICTORY IN ANY CONFLICT
diana
diana
polyalphabetic
{ "type": "keyword", "value": "MUSEUM" }
intermediate
en
60
60
cipher_museum
0.2
public
null
null
cda-0015561
809 824 815 816 826 812 999 800 840 811 999 821 812 833 833 838 801 841 999 826 839 858 853 843 810 860 806 814 809 999 847 860 805 834 825 807 999 831 814 872 999 806 853 874 845 857 843 818 852 800 846 821 874 999 825 841 999 839 826 840 812 858 814 814 841 999 856 813 863 813 839 859 872 999 854 826 871 999 818 853 ...
809 824 815 816 826 812 999 800 840 811 999 821 812 833 833 838 801 841 999 826 839 858 853 843 810 860 806 814 809 999 847 860 805 834 825 807 999 831 814 872 999 806 853 874 845 857 843 818 852 800 846 821 874 999 825 841 999 839 826 840 812 858 814 814 841 999 856 813 863 813 839 859 872 999 854 826 871 999 818 853 ...
DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER
culper_ring
culper_ring
null
{}
hard
en
228
228
synthetic_educational
null
null
[ "codebook_frequency", "number_range_analysis" ]
Culper Ring code: Washington's three-digit codebook numbers (800–999 range).
cda-0016664
KSKPT ALCIB WGRKX KPSUB YLNCB QAYII SWFSK GGBBQ JZMOJ JJAJI YIDYO GRHZH RRWJT UVUVA ZAZYG PFQCX CPKEX TLMIE PAURN DSVBO UQZBD PYOHC UDPZP ZPMKU VITDS WPVHP UVBTH RLAYT AEODL
KSKPT ALCIB WGRKX KPSUB YLNCB QAYII SWFSK GGBBQ JZMOJ JJAJI YIDYO GRHZH RRWJT UVUVA ZAZYG PFQCX CPKEX TLMIE PAURN DSVBO UQZBD PYOHC UDPZP ZPMKU VITDS WPVHP UVBTH RLAYT AEODL
THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS
vernam
vernam
null
{}
hard
en
145
145
synthetic_educational
null
null
[ "key_reuse_attack", "information_theoretic_proof" ]
Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP.
enigma-081
DXCOZLQMLBIHRPDMWT
DXCOZLQMLBIHRPDMWT
THE BRIDGE IS SECURED
enigma
enigma
machine
{ "type": "rotor_start", "value": "XYZ" }
expert
en
18
18
cipher_museum
0.2
public
null
null
cda-0010245
OA OSSWAN QVCVRE OCCYVNF O YWANOE SHAQGVBA GB SONV YNGGRE SENRQZOA SFGWZOGRQ XRL YRAUGU TEBZ FGOGVFGVQF ZBQNEA RAPELCGWBA NF ABG PEBXSA PL YRGGNE SESDHSANL
OA OSSWAN QVCVRE OCCYVNF O YWANOE SHAQGVBA GB SONV YNGGRE SENRQZOA SFGWZOGRQ XRL YRAUGU TEBZ FGOGVFGVQF ZBQNEA RAPELCGWBA NF ABG PEBXSA PL YRGGNE SESDHSANL
AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY
porta
porta
null
{ "key": "CIPHER" }
hard
en
132
132
synthetic_educational
null
null
[]
cda-0002748
OYOAG HEVAU PEBXR SAVUZ OJWGV NEWPF OAQGV RPBZP SZONU WARCB YLPVH FRAQB RRQNS GGREF OFCOV EFBTA HZPRE FSEBZ BARGB SWIR
OYOAG HEVAU PEBXR SAVUZ OJWGV NEWPF OAQGV RPBZP SZONU WARCB YLPVH FRAQB RRQNS GGREF OFCOV EFBTA HZPRE FSEBZ BARGB SWIR
ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE
porta
porta
null
{ "key": "SECURE" }
hard
en
99
99
synthetic_educational
null
null
[ "kasiski_examination", "index_of_coincidence" ]
Porta: 13-row table polyalphabetic cipher; reciprocal (encrypt = decrypt).
cda-0018359
44 23 15 12 15 43 44 31 15 43 43 34 33 43 43 23 34 52 52 23 15 42 15 44 23 15 32 15 44 23 34 14 21 11 24 31 43 11 44 42 11 33 43 35 11 42 15 33 44 44 34 34 31 43 23 34 45 31 14 43 23 34 52 24 44 43 42 15 11 43 34 33 24 33 22 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 23 15 12 15 43 44 31 15 43 43 34 33 43 43 23 34 52 52 23 15 42 15 44 23 15 32 15 44 23 34 14 21 11 24 31 43 11 44 42 11 33 43 35 11 42 15 33 44 44 34 34 31 43 23 34 45 31 14 43 23 34 52 24 44 43 42 15 11 43 34 33 24 33 22 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...
THE BEST LESSONS SHOW WHERE THE METHOD FAILS A TRANSPARENT TOOL SHOULD SHOW ITS REASONING AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER TOMORROW
polybius
polybius
null
{}
hard
en
131
131
synthetic_educational
null
null
[ "pair_decode", "frequency_analysis" ]
Polybius square: 5×5 grid maps letters to two-digit row-column pairs.
cda-0019734
among track route array notes shore phase alert radio early night turns takes opens opens leads south heads opens units leads daily stage holds order
among track route array notes shore phase alert radio early night turns takes opens opens leads south heads opens units leads daily stage holds order
A TRANSPARENT TOOL SHOULD SHOW ITS REASONING BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING
null_cipher
null_cipher
null
{}
hard
en
125
125
synthetic_educational
null
null
[ "acrostic_detection", "first_letter_extraction" ]
Null/steganographic cipher: hidden message formed by first letters of words.
alberti-disk-v3-0429
CJSTGCXORPXXEXXBVBJQQ
CJSTGCXORPXXEXXBVBJQQ
THE CASTLE IS SURROUNDED
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 11 }
expert
en
21
21
cipher_museum
2.0
public
null
null
bazeries-285
YUTEAYXQJGSNYHQAOJQGTPQENYEQRATQKTIQJQGAYMIYEV
YUTEAYXQJGSNYHQAOJQGTPQENYEQRATQKTIQJQGAYMIYEV
I HAVE NOT YET BEGUN TO FIGHT SAID THE CAPTAIN TO THE CREW
bazeries
bazeries
transposition
{ "type": "integer", "value": 31 }
advanced
en
46
46
cipher_museum
0.2
public
null
null
wallis-cipher-v3-0174
90 82 18 30 54 77 63 85 91 90 88 25 84 81 15 76 41 91 90 44 54 53 91 90 45 63 30 76 40 75 85 80 63 91 90 47 15 91 90 45 58 76 91 90 44 63 18 37 76 66 53 91 90 47 81 33 91 90 73 25 66 61 84 55 27 63 41 91 90 15 58 18 45 91 90 15 44 76 91 90 63 47 20 45 58 91 90 85 55 12 54 15 40 91 90 45 44 76 91 90 53 79 81 91
90 82 18 30 54 77 63 85 91 90 88 25 84 81 15 76 41 91 90 44 54 53 91 90 45 63 30 76 40 75 85 80 63 91 90 47 15 91 90 45 58 76 91 90 44 63 18 37 76 66 53 91 90 47 81 33 91 90 73 25 66 61 84 55 27 63 41 91 90 15 58 18 45 91 90 15 44 76 91 90 63 47 20 45 58 91 90 85 55 12 54 15 40 91 90 45 44 76 91 90 53 79 81 91
GALILEO POINTED HIS TELESCOPE AT THE HEAVENS AND CONFIRMED THAT THE EARTH ORBITS THE SUN
wallis_cipher
wallis_cipher
nomenclator
{ "type": "seed", "value": "ENGLAND" }
expert
en
208
311
cipher_museum
2.0
public
null
null
geheimschreiber-v3-0137
LFSEEHALOVCE
LFSEEHALOVCE
YANKEE DOODLE
geheimschreiber
geheimschreiber
machine
{ "type": "seed", "value": "KAISER" }
expert
en
12
12
cipher_museum
2.0
public
null
null
cda-0017098
12.39.4 11.17.15 17.1.6 8.45.6 15.9.13 5.47.12 13.49.4 1.34.14 13.18.15 17.37.11 11.46.9 14.5.3 12.5.1 4.22.8 17.21.1 1.47.8 15.11.3 15.42.10 12.8.10 15.45.7 5.38.8 13.18.1 10.36.11 18.2.4 7.16.6 13.3.13 6.33.6 11.4.12 19.38.4 7.37.5 16.27.5 15.9.13 20.32.2 2.50.14 8.25.12 6.48.3 18.10.5 9.35.12 12.26.6 12.15.15 3.9.8 ...
12.39.4 11.17.15 17.1.6 8.45.6 15.9.13 5.47.12 13.49.4 1.34.14 13.18.15 17.37.11 11.46.9 14.5.3 12.5.1 4.22.8 17.21.1 1.47.8 15.11.3 15.42.10 12.8.10 15.45.7 5.38.8 13.18.1 10.36.11 18.2.4 7.16.6 13.3.13 6.33.6 11.4.12 19.38.4 7.37.5 16.27.5 15.9.13 20.32.2 2.50.14 8.25.12 6.48.3 18.10.5 9.35.12 12.26.6 12.15.15 3.9.8 ...
THE BEST LESSONS SHOW WHERE THE METHOD FAILS OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION
book_cipher
book_cipher
null
{}
hard
en
117
117
synthetic_educational
null
null
[ "book_cipher_attack", "triple_index_search" ]
Book cipher: coordinates (page.line.word) referencing a shared document.
affine-287
BWRO BOLO BOAO O AEGW O UEM O ACRYQWJWL EVV OR E UORSVW PEFFVW
BWRO BOLO BOAO O AEGW O UEM O ACRYQWJWL EVV OR E UORSVW PEFFVW
VENI VIDI VICI I CAME I SAW I CONQUERED ALL IN A SINGLE BATTLE
affine
affine
substitution
{ "a": 11, "b": 4 }
beginner
en
49
62
cipher_museum
0.2
public
null
null
enigma-v3-0848
DXBMNNFHSMOLUMXBN
DXBMNNFHSMOLUMXBN
ARCHERS TO THE WALLS
enigma
enigma
machine
{ "type": "rotor_start", "value": "AAB" }
expert
en
17
17
cipher_museum
2.0
public
null
null
cda-0013392
FREQ UENC YANA LYXI SCAX REVE ALWE AKCI PHER SATX ANSP AREN TXOO LSHO ULDZ HOWI TSRE AZON INGE NTRZ PYME ASUR ESUN CERT AINT YINA DIST RXBU TIZN BBXE
FREQ UENC YANA LYXI SCAX REVE ALWE AKCI PHER SATX ANSP AREN TXOO LSHO ULDZ HOWI TSRE AZON INGE NTRZ PYME ASUR ESUN CERT AINT YINA DIST RXBU TIZN BBXE
FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS A TRANSPARENT TOOL SHOULD SHOW ITS REASONING ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION
commercial_code
commercial_code
null
{}
hard
en
120
120
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-0015326
L ─ K ┌· ┘· ┐· ⌒· ┌ L ⌐ X X· ┌· L X X· ─ r L ┌· K ⌐ Γ· ─ K ⌒· Γ· ─ ⌐ Γ Γ· X K ┌· Γ· ¬ X· K Γ· ┘· ─
L ─ K ┌· ┘· ┐· ⌒· ┌ L ⌐ X X· ┌· L X X· ─ r L ┌· K ⌐ Γ· ─ K ⌒· Γ· ─ ⌐ Γ Γ· X K ┌· Γ· ¬ X· K Γ· ┘· ─
ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION
pigpen
pigpen
null
{}
easy
en
16
16
synthetic_educational
null
null
[ "symbol_frequency", "grid_position_decode" ]
Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids.
kl7-v2-0237
CNRYWGAXRGGAMPTJMLBPRKBYNDTKKYKGHAGOEHFDJGHFHLXOEVFXNTPBNKUJIYORJTOHGZZEOUWHLSYTILUQUXYTBFCUBYUEBZIWUKQONPRDLQEHKJPHEQNJNYDSHOEYGHLFGHHGBOVSFINDIDDS
CNRYWGAXRGGAMPTJMLBPRKBYNDTKKYKGHAGOEHFDJGHFHLXOEVFXNTPBNKUJIYORJTOHGZZEOUWHLSYTILUQUXYTBFCUBYUEBZIWUKQONPRDLQEHKJPHEQNJNYDSHOEYGHLFGHHGBOVSFINDIDDS
THE ART OF WAR IS OF VITAL IMPORTANCE TO THE STATE IT IS A MATTER OF LIFE AND DEATH A ROAD EITHER TO SAFETY OR TO RUIN HENCE IT IS A SUBJECT OF INQUIRY WHICH CAN ON NO ACCOUNT BE NEGLECTED
kl7
kl7
machine
{ "type": "seed", "value": "LIBERTY" }
expert
en
148
148
cipher_museum
2.0
public
null
null
nomenclator-v2-0060
02 12 15 15 04 19 23 05 01 20 61 20 05 01 18 19 20 08 05 19 05 01 18 05 23 08 01 20 09 15 06 06 05 18 25 15 21 06 15 18 60 04 05 06 05 14 19 05 62 15 21 18 09 19 12 01 14 04 14 01 20 09 15 14
02 12 15 15 04 19 23 05 01 20 61 20 05 01 18 19 20 08 05 19 05 01 18 05 23 08 01 20 09 15 06 06 05 18 25 15 21 06 15 18 60 04 05 06 05 14 19 05 62 15 21 18 09 19 12 01 14 04 14 01 20 09 15 14
BLOOD SWEAT AND TEARS THESE ARE WHAT I OFFER YOU FOR THE DEFENSE OF OUR ISLAND NATION
nomenclator
nomenclator
nomenclator
{ "type": "none", "value": null }
expert
en
128
191
cipher_museum
2.0
public
null
null
fialka-v2-0433
TLLJXUBHMFKMCWLBWIERMKGSTLVJAJJDRCMTSSASQIAUZRLIVECHGRDYOLOXNDCPFNXELDINDWA
TLLJXUBHMFKMCWLBWIERMKGSTLVJAJJDRCMTSSASQIAUZRLIVECHGRDYOLOXNDCPFNXELDINDWA
ARMY OF NORTHERN VIRGINIA SURRENDERS AT APPOMATTOX COURTHOUSE THE WAR IN THE EAST IS OVER
fialka
fialka
machine
{ "type": "seed", "value": "SPUTNIK" }
expert
en
75
75
cipher_museum
2.0
public
null
null
wallis-cipher-v2-0171
90 15 44 54 53 91 90 18 12 85 37 63 91 90 47 30 77 91 90 45 25 91 90 15 58 84 81 76 91 90 85 67 66 91 90 40 63 30 61 91 90 69 76 91 90 45 55 79 63 91 90 18 81 41 91 90 54 15 91 90 27 72 53 45 91 90 35 25 77 30 85 23 91 90 47 40 91 90 66 84 82 44 15 91 90 45 58 76 91 90 33 18 89 91
90 15 44 54 53 91 90 18 12 85 37 63 91 90 47 30 77 91 90 45 25 91 90 15 58 84 81 76 91 90 85 67 66 91 90 40 63 30 61 91 90 69 76 91 90 45 55 79 63 91 90 18 81 41 91 90 54 15 91 90 27 72 53 45 91 90 35 25 77 30 85 23 91 90 47 40 91 90 66 84 82 44 15 91 90 45 58 76 91 90 33 18 89 91
THIS ABOVE ALL TO THINE OWN SELF BE TRUE AND IT MUST FOLLOW AS NIGHT THE DAY
wallis_cipher
wallis_cipher
nomenclator
{ "type": "seed", "value": "ENGLAND" }
expert
en
188
281
cipher_museum
2.0
public
null
null
lorenz-v2-0481
ANNUJTCOEPTIS
ANNUJTCOEPTIS
ANNUIT COEPTIS
lorenz
lorenz
machine
{ "type": "seed", "value": "STURGEON" }
expert
en
13
13
cipher_museum
2.0
public
null
null
cda-0006120
EBHGR PVCUREF ERNQ N TEVQ VA N CERFPEVORQ TRBZRGEVP CNGGREA
EBHGR PVCUREF ERNQ N TEVQ VA N CERFPEVORQ TRBZRGEVP CNGGREA
ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN
rot13
rot13
null
{ "shift": 13 }
medium
en
50
50
synthetic_educational
null
null
[ "brute_force_26", "self_inverse_check" ]
ROT-13 is Caesar with shift 13 — it is its own inverse.
playfair-v3-0053
TLOPTGAZNQOUQUUAPMBNIOMQCLOLCKKWPCNBKIKYNQOUQUTLOPTGPOQFPMKGRLKBLCHPSUPOMTUCKO
TLOPTGAZNQOUQUUAPMBNIOMQCLOLCKKWPCNBKIKYNQOUQUTLOPTGPOQFPMKGRLKBLCHPSUPOMTUCKO
SCIENCE WITHOUT RELIGION IS LAME AND RELIGION WITHOUT SCIENCE IS BLIND SAID ALBERT EINSTEIN
playfair
playfair
polygraphic
{ "type": "keyword", "value": "PALACE" }
intermediate
en
78
78
cipher_museum
2.0
public
null
null
rail-fence-vg-0050
SIDESBEAYSYTFRDOLTRESEDNGIAOFLRTNADMNNTYULEBREANYKOAEOINAOOVUDBEVS
SIDESBEAYSYTFRDOLTRESEDNGIAOFLRTNADMNNTYULEBREANYKOAEOINAOOVUDBEVS
STAND FIRM AND DO NOT LET YOURSELVES BE BURDENED AGAIN BY A YOKE OF SLAVERY TO SIN
rail_fence
rail_fence
transposition
{ "type": "integer", "value": 4 }
intermediate
en
66
66
cipher_museum
2.0
public
null
null
cardano-autokey-024
VKLMLGBCBR
VKLMLGBCBR
TRUST NO ONE
cardano_autokey
cardano_autokey
polyalphabetic
{ "type": "keyword", "value": "CARDANO" }
advanced
en
10
10
cipher_museum
0.2
public
null
null
alberti-disk-v3-0406
DRHOSDSBGNFRZCNZQKBVQDBZKYVRPQXYLFPLUGFTLTBSNVAHYAHAZFASDRDIJDYIEDWQSDKEDRDIJHWLJCSOVLQLNKDWPJSNSIZELGBOJOBYQCXCINIEQZERXZAJBEASHMYLNFVLDGXPQGZWWEWGSOBFTCVMXGEZI
DRHOSDSBGNFRZCNZQKBVQDBZKYVRPQXYLFPLUGFTLTBSNVAHYAHAZFASDRDIJDYIEDWQSDKEDRDIJHWLJCSOVLQLNKDWPJSNSIZELGBOJOBYQCXCINIEQZERXZAJBEASHMYLNFVLDGXPQGZWWEWGSOBFTCVMXGEZI
WHENEVER ANY FORM OF GOVERNMENT BECOMES DESTRUCTIVE OF THESE ENDS IT IS THE RIGHT OF THE PEOPLE TO ALTER OR TO ABOLISH IT AND TO INSTITUTE NEW GOVERNMENT LAYING ITS FOUNDATION ON SUCH PRINCIPLES
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 10 }
expert
en
161
161
cipher_museum
2.0
public
null
null
venona-pad-reuse-v2-0039
4O2PGHBA5A2EELMAPH5B2AAA
4O2PGHBA5A2EELMAPH5B2AAA
TORPEDO AWAY ALL HANDS BRACE
venona_pad_reuse
venona_pad_reuse
stream
{ "type": "keyword", "value": "PALACE" }
expert
en
24
24
cipher_museum
2.0
public
null
null
cda-0019038
CTISX RUFRC BJYDF KMYPN KOHXO IVQZD UFTNP WDVCX IAXPP XTMSK UUDMF RISXY SOPCW JCUVC DMHAL BQWNR TVF
CTISX RUFRC BJYDF KMYPN KOHXO IVQZD UFTNP WDVCX IAXPP XTMSK UUDMF RISXY SOPCW JCUVC DMHAL BQWNR TVF
PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE
one_time_pad
one_time_pad
null
{}
hard
en
83
83
synthetic_educational
null
null
[ "information_theoretic_proof", "key_reuse_attack" ]
One-time pad: theoretically unbreakable if key is truly random and never reused.
noisy-columnar_transposition-telegraph-044
TSISRTTWUNTASNEAGLRHHNMROOH NEETCIENICRREESOAGTPIPRAHTIMPH
TSISRTTWUNTASNEAGLRHHNMROOH NEETCIENICRREESOAGTPIPRAHTIMPH
TRANSPOSITION CIPHERS REARRANGE THE LETTERS WITHOUT CHANGING THEM
columnar_transposition
columnar_transposition
transposition
{ "type": "keyword", "value": "ZEBRA" }
intermediate
en
57
58
cipher_museum
0.2
public
null
null
lorenz-v3-0270
GALILEOPOINTEDHISTELESCOPEATTHEHEAVENSANDCONFIRMEDTHATTHEEARTHORBITSTHESUN
GALILEOPOINTEDHISTELESCOPEATTHEHEAVENSANDCONFIRMEDTHATTHEEARTHORBITSTHESUN
GALILEO POINTED HIS TELESCOPE AT THE HEAVENS AND CONFIRMED THAT THE EARTH ORBITS THE SUN
lorenz
lorenz
machine
{ "type": "seed", "value": "COLOSSUS" }
expert
en
74
74
cipher_museum
2.0
public
null
null
typex-v2-0120
KTQHSLKNKQWCXCHNRXRUNUWXMUAJHSVDFCKEAEQTGVLKSBVMHLDIMZLBUJFFBHMFRMCDBMDXANZDTVDDRUNPZFNJHSZACUXKTNJJFDJKIOPVTUOGKKOJXXGWNRDJFXIXLEDRMSBANMJQWBNVAZTMRFWLZIAKUFHHWOGCZHAUASHERSTSXWEPI
KTQHSLKNKQWCXCHNRXRUNUWXMUAJHSVDFCKEAEQTGVLKSBVMHLDIMZLBUJFFBHMFRMCDBMDXANZDTVDDRUNPZFNJHSZACUXKTNJJFDJKIOPVTUOGKKOJXXGWNRDJFXIXLEDRMSBANMJQWBNVAZTMRFWLZIAKUFHHWOGCZHAUASHERSTSXWEPI
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
typex
typex
machine
{ "type": "keyword", "value": "LONDON" }
expert
en
181
181
cipher_museum
2.0
public
null
null
aeneas-tacticus-v2-0023
12 15 15 19 5 12 9 16 19 19 9 14 11 19 8 9 16 19
12 15 15 19 5 12 9 16 19 19 9 14 11 19 8 9 16 19
LOOSE LIPS SINK SHIPS
aeneas_tacticus
aeneas_tacticus
steganography
{ "type": "none", "value": null }
expert
en
31
48
cipher_museum
2.0
public
null
null
affine-v2-0899
UYDMD GMIICEM VYXXYSI
UYDMD GMIICEM VYXXYSI
CODED MESSAGE FOLLOWS
affine
affine
substitution
{ "a": 9, "b": 2 }
beginner
en
19
21
cipher_museum
2.0
public
null
null
cda-0017168
POLYX IUSEZ CODED LETTE RSASP AIRSO FNUMB ERSFR OMONE TOFIV EZCBD
POLYX IUSEZ CODED LETTE RSASP AIRSO FNUMB ERSFR OMONE TOFIV EZCBD
POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE
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.
cda-0013115
MOAS IAKH ADIB EHYA ZZIE NODA IHNA ASTS OSIT SAHW OLLA CHEE GAHT HANZ IEGA HWOL LACH EETS AHDI BEHC LAGI AIHA KHAD IBEH TKIN THAN ZIET KINA KHAT SAHG AHDZ EHWO LLAC HEEB EDIB EHMO ASIA KHAD IBEH YAZZ IENO DAIH NAAS TSOS ITSA HDIB EHTK INTS AHKL IZZI EDZE HTSA HASZ IHAK HAGA H
MOAS IAKH ADIB EHYA ZZIE NODA IHNA ASTS OSIT SAHW OLLA CHEE GAHT HANZ IEGA HWOL LACH EETS AHDI BEHC LAGI AIHA KHAD IBEH TKIN THAN ZIET KINA KHAT SAHG AHDZ EHWO LLAC HEEB EDIB EHMO ASIA KHAD IBEH YAZZ IENO DAIH NAAS TSOS ITSA HDIB EHTK INTS AHKL IZZI EDZE HTSA HASZ IHAK HAGA H
COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER SLOWLY
navajo_code
navajo_code
null
{}
hard
en
221
221
synthetic_educational
null
null
[ "codebook_frequency", "word_list_attack" ]
Navajo Code Talker cipher: Navajo words represent English letters.
cda-0019923
THAN-ZIE / LIN / DZEH / THAN-ZIE / GAH / TKIN / THAN-ZIE / LIN / DZEH / NA-AS-TSO-SI / TKIN / NO-DA-IH / DIBEH / MOASI / TKIN / CLA-GI-AIH / LIN / DZEH / GAH / WOL-LA-CHEE / BE / A-KEH-DI-GLINI / WOL-LA-CHEE / TSAH / MOASI ...
THAN-ZIE / LIN / DZEH / THAN-ZIE / GAH / TKIN / THAN-ZIE / LIN / DZEH / NA-AS-TSO-SI / TKIN / NO-DA-IH / DIBEH / MOASI / TKIN / CLA-GI-AIH / LIN / DZEH / GAH / WOL-LA-CHEE / BE / A-KEH-DI-GLINI / WOL-LA-CHEE / TSAH / MOASI ...
THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY PERHAPS
navajo_code
navajo_code
null
{}
hard
en
226
226
synthetic_educational
null
null
[ "codebook_frequency", "word_list_attack" ]
Navajo Code Talker cipher: Navajo words represent English letters.
purple-v2-0256
LWXOXKNSFQFNGH
LWXOXKNSFQFNGH
STORM THE BREACH
purple
purple
machine
{ "type": "seed", "value": "SAKURA" }
expert
en
14
14
cipher_museum
2.0
public
null
null
trifid-221
UJAZWYCGHXTRPWNGZCCHPHWVWJZBXYFDBNETY+ZQFACYNAZ
UJAZWYCGHXTRPWNGZCCHPHWVWJZBXYFDBNETY+ZQFACYNAZ
ASK NOT WHAT YOUR COUNTRY CAN DO FOR YOU BUT WHAT YOU CAN DO
trifid
trifid
fractionation
{ "type": "keyword", "value": "MUSEUM" }
advanced
en
47
47
cipher_museum
0.2
public
null
null
wheatstone-v2-0366
SDBSLKSDANEPQSTBYLNFBKUBPYEKSDAYABPLNLUPHLPTLKASDLUQBKTAECDSDUKTPATBKTQEXSYSDPAABHHMAPQLKQDAHTBQQHBVAQWESDEKBKYQSBSAEKPARAHHELKBCBEKQSSDAUKESATQSBSAQQDBHHRANPAA
SDBSLKSDANEPQSTBYLNFBKUBPYEKSDAYABPLNLUPHLPTLKASDLUQBKTAECDSDUKTPATBKTQEXSYSDPAABHHMAPQLKQDAHTBQQHBVAQWESDEKBKYQSBSAEKPARAHHELKBCBEKQSSDAUKESATQSBSAQQDBHHRANPAA
THAT ON THE FIRST DAY OF JANUARY IN THE YEAR OF OUR LORD ONE THOUSAND EIGHT HUNDRED AND SIXTY THREE ALL PERSONS HELD AS SLAVES WITHIN ANY STATE IN REBELLION AGAINST THE UNITED STATES SHALL BE FREE
wheatstone
wheatstone
polygraphic
{ "type": "keyword", "value": "BRITAIN" }
advanced
en
160
160
cipher_museum
2.0
public
null
null
straddling-checkerboard-v3-0279
62274456317442522170702822231282816218647284222142522312922235092242514255282134252270281622438642522807014253
62274456317442522170702822231282816218647284222142522312922235092242514255282134252270281622438642522807014253
NEWTON SAW THE APPLE FALL AND INTUITED THE SAME FORCE THAT HOLDS THE PLANETS IN THEIR PATHS
straddling_checkerboard
straddling_checkerboard
substitution
{ "type": "top_row", "value": "RASTONICEL" }
advanced
en
110
110
cipher_museum
2.0
public
null
null
playfair-v3-0019
UGPLCEOHNKTUTQLYEPAHXL
UGPLCEOHNKTUTQLYEPAHXL
THE ALCHEMIST SUCCEEDS
playfair
playfair
polygraphic
{ "type": "keyword", "value": "PALACE" }
intermediate
en
22
22
cipher_museum
2.0
public
null
null
jn25-v2-0025
26199 26197 26100 26198 26199 26181 26100 26199 26101 26184 26197 26188 26185 26104
26199 26197 26100 26198 26199 26181 26100 26199 26101 26184 26197 26188 26185 26104
TRUST BUT VERIFY
jn25
jn25
codebook
{ "type": "additive", "value": "16180" }
expert
en
70
83
cipher_museum
2.0
public
null
null
purple-175
YSFTOBFOVDQUVVRLGNHPVQKNQSFTOIRXBSZAVCPEPPNTLZYEQYCLUKFWVRQU
YSFTOBFOVDQUVVRLGNHPVQKNQSFTOIRXBSZAVCPEPPNTLZYEQYCLUKFWVRQU
EVERY SECRET HAS A KEEPER AND EVERY CODE HAS A BREAKER WHO SEEKS THE TRUTH
purple
purple
machine
{ "type": "seed", "value": "SECRET" }
expert
en
60
60
cipher_museum
0.2
public
null
null
playfair-073
NHHUDQYDCUMBQRLW
NHHUDQYDCUMBQRLW
MEET AT THE OLD OAK
playfair
playfair
polygraphic
{ "type": "keyword", "value": "CIPHER" }
intermediate
en
16
16
cipher_museum
0.2
public
null
null
stager-route-306
PSPROLACENNEDEDA
PSPROLACENNEDEDA
PROCEED AS PLANNED
stager_route
stager_route
transposition
{ "type": "integer", "value": 8 }
expert
en
16
16
cipher_museum
0.2
public
null
null
one-time-pad-033
QTGYYBNHZFZIGPXPJWQAHOLHXGXBMTSEITZX
QTGYYBNHZFZIGPXPJWQAHOLHXGXBMTSEITZX
THE ONLY THING WE HAVE TO FEAR IS FEAR ITSELF
one_time_pad
one_time_pad
stream
{ "type": "pad", "value": "XMCKLQPOS (repeating)" }
expert
en
36
36
cipher_museum
0.2
public
null
null
copiale-v3-0149
I7 U2 D5 B6 R0 Q8 H4 U3 F0 E4 Y6 X6 D6 F7 L7 B4 O1 D4 K8 M9
I7 U2 D5 B6 R0 Q8 H4 U3 F0 E4 Y6 X6 D6 F7 L7 B4 O1 D4 K8 M9
STEAM POWER TRANSFORMS
copiale
copiale
substitution
{ "type": "keyword", "value": "TEMPLE" }
advanced
en
40
59
cipher_museum
2.0
public
null
null
jn25-v3-0152
09991 09999 09900 09900 09901 09993 09997 09907 09996 09901 09999 09993 09900 09907 09903 09901 09993 09913 09993 09999 09906 09907 09999 09995 09903 09902 09993 09910 09993 09906 09901 09997 09902 09992 09996 09903 09911 09900 09903 09902 09995 09904 09906 09993 09991 09997 09907 09993 09900 09913 09997 09908 09996 09...
09991 09999 09900 09900 09901 09993 09997 09907 09996 09901 09999 09993 09900 09907 09903 09901 09993 09913 09993 09999 09906 09907 09999 09995 09903 09902 09993 09910 09993 09906 09901 09997 09902 09992 09996 09903 09911 09900 09903 09902 09995 09904 09906 09993 09991 09997 09907 09993 09900 09913 09997 09908 09996 09...
CALL ME ISHMAEL SOME YEARS AGO NEVER MIND HOW LONG PRECISELY I THOUGHT I WOULD SAIL ABOUT AND SEE THE OCEAN
jn25
jn25
codebook
{ "type": "additive", "value": "99999" }
expert
en
435
521
cipher_museum
2.0
public
null
null
cda-0012064
AABBB ABAAA BAAAB BAABA ABBAB BAAAA ABAAA AAABA AAAAA ABABA AAABA ABAAA ABBBA AABBB AABAA BAAAA BAAAB AAAAA BAAAA AABAA BAABA AABAA AAAAA AAABA AABBB AABAA BAAAA BAAAB ABBAA ABBAB BAABA ABBBA BAAAA ABBAB BAABA AABAA AAABA BAABA ABAAA ABBAB ABBAA
AABBB ABAAA BAAAB BAABA ABBAB BAAAA ABAAA AAABA AAAAA ABABA AAABA ABAAA ABBBA AABBB AABAA BAAAA BAAAB AAAAA BAAAA AABAA BAABA AABAA AAAAA AAABA AABBB AABAA BAAAA BAAAB ABBAA ABBAB BAABA ABBBA BAAAA ABBAB BAABA AABAA AAABA BAABA ABAAA ABBAB ABBAA
HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION
bacon_cipher
bacon_cipher
null
{}
hard
en
205
205
synthetic_educational
null
null
[ "five_bit_decode", "ab_frequency_analysis" ]
Bacon's biliteral cipher: each letter encoded as 5-bit A/B string.
joseon-yeokhak-145
QGJCLACGQEMJBCL
QGJCLACGQEMJBCL
SILENCE IS GOLDEN
joseon_yeokhak
joseon_yeokhak
substitution
{ "type": "keyword", "value": "KOREA" }
beginner
en
15
15
cipher_museum
0.2
public
null
null
great-cipher-v3-0225
101 140 157 160 178 126 182 159 142 131 134 141 121 175 121 111
101 140 157 160 178 126 182 159 142 131 134 141 121 175 121 111
THE KING DEMANDS FEALTY
great_cipher
great_cipher
nomenclator
{ "type": "seed", "value": "FRANCE" }
expert
en
48
63
cipher_museum
2.0
public
null
null
confederate-vigenere-v3-0288
KCJQRWWOPYPIKQRWMITMJMKKIJIQPIUQKOVHTFMWRVMMVVWKIPFWKBEFBXVHKCJIRVWRZGHAFVXKMCQIOL
KCJQRWWOPYPIKQRWMITMJMKKIJIQPIUQKOVHTFMWRVMMVVWKIPFWKBEFBXVHKCJIRVWRZGHAFVXKMCQIOL
HUMINT OR HUMAN INTELLIGENCE GATHERING RELIES ON PERSONAL CONTACT AND HUMAN SOURCES IN THE FIELD
confederate_vigenere
confederate_vigenere
polyalphabetic
{ "type": "keyword", "value": "DIXIE" }
intermediate
en
82
82
cipher_museum
2.0
public
null
null
cda-0003410
ANLEANATTIOSERCNADTTRTSSSIRRUNXBSAPPOHOANOONOHNWSXXTIGESIWLSPSINIRETIXXTHLSTGTHAROSTIREOUXXTUTEORRUE
ANLEANATTIOSERCNADTTRTSSSIRRUNXBSAPPOHOANOONOHNWSXXTIGESIWLSPSINIRETIXXTHLSTGTHAROSTIREOUXXTUTEORRUE
A TRANSPARENT TOOL SHOULD SHOW ITS REASONING TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION
stager_route
stager_route
null
{ "cols": 10 }
hard
en
100
100
synthetic_educational
null
null
[ "column_count_search", "route_pattern_search" ]
Route (Stager) cipher: write into rectangle, read via alternating column route.
playfair-138
BQEYFSGKFSSKOPXY
BQEYFSGKFSSKOPXY
FORWARD MARCH NOW
playfair
playfair
polygraphic
{ "type": "keyword", "value": "SECRET" }
intermediate
en
16
16
cipher_museum
0.2
public
null
null
sigaba-v3-0253
AQDOAIGPCMAACLVTESNX
AQDOAIGPCMAACLVTESNX
STEAM POWER TRANSFORMS
sigaba
sigaba
machine
{ "type": "seed", "value": "FREEDOM" }
expert
en
20
20
cipher_museum
2.0
public
null
null