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6
2.11k
plaintext
stringlengths
6
282
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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
dataset_version
stringclasses
2 values
split
stringclasses
1 value
attack_methods
listlengths
0
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educational_note
stringclasses
32 values
beaufort-v3-0681
HZUUJJNFJJOEXMYJAEXUVDJAMAJZKAMIVNCRNDPTSGWKWDMRPCKOANALVBKEWWCOGDNNPDS
HZUUJJNFJJOEXMYJAEXUVDJAMAJZKAMIVNCRNDPTSGWKWDMRPCKOANALVBKEWWCOGDNNPDS
TO INFINITY AND BEYOND THE FRONTIER OF HUMAN KNOWLEDGE CALLS TO EACH GENERATION ANEW
beaufort
beaufort
polyalphabetic
{ "type": "keyword", "value": "ANCHOR" }
intermediate
en
71
71
cipher_museum
2.0
public
null
null
nomenclator-v3-0007
13 01 18 03 08 63 22 09 03 20 15 18 25
13 01 18 03 08 63 22 09 03 20 15 18 25
MARCH TO VICTORY
nomenclator
nomenclator
nomenclator
{ "type": "none", "value": null }
expert
en
26
38
cipher_museum
2.0
public
null
null
adfgx-v3-0433
DXAAAGGXXFXDGXGGGADGXGADFFXGAFDFDDXGFDXAGGXAGGXDXAFFGGXFDFXXDDFXGGAADAGAAAXFDXGXFGDAFGGAFAAAAAADFFFFGXGXDDFXAXAXAXGXFAFDDDAFADDXAXDXADGX
DXAAAGGXXFXDGXGGGADGXGADFFXGAFDFDDXGFDXAGGXAGGXDXAFFGGXFDFXXDDFXGGAADAGAAAXFDXGXFGDAFGGAFAAAAAADFFFFGXGXDDFXAXAXAXGXFAFDDDAFADDXAXDXADGX
THE ONLY THING NECESSARY FOR THE TRIUMPH OF EVIL IS FOR GOOD MEN TO DO NOTHING AT ALL
adfgx
adfgx
fractionation
{ "polybius": "WISDOM", "columnar": "COURAGE" }
advanced
en
136
136
cipher_museum
2.0
public
null
null
alberti-disk-v3-0407
YRHFBOVWKOOHCZXXWPJRQASUIWKWNGPEUDXANAGQTMXMINEVMWFMWICZFBUKWFFZARRMSHGNPVDFKNWYQJRLXJEMTOFFFWXNLTNEBROLBLFZTJBNDXICTAIZSOJIEOFQEGMZBJPKAFUVZKTGMOTEOVWWLVNAHSOIRXBAITRRETD
YRHFBOVWKOOHCZXXWPJRQASUIWKWNGPEUDXANAGQTMXMINEVMWFMWICZFBUKWFFZARRMSHGNPVDFKNWYQJRLXJEMTOFFFWXNLTNEBROLBLFZTJBNDXICTAIZSOJIEOFQEGMZBJPKAFUVZKTGMOTEOVWWLVNAHSOIRXBAITRRETD
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
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 10 }
expert
en
171
171
cipher_museum
2.0
public
null
null
cda-0015048
11 31 11 33 44 45 42 24 33 22 12 42 34 25 15 15 33 24 22 32 11 52 24 44 23 13 42 24 12 43 11 33 14 44 23 15 12 34 32 12 15 32 11 13 23 24 33 15 14 34 45 12 31 15 44 42 11 33 43 35 34 43 24 44 24 34 33 11 35 35 31 24 15 43 13 34 31 45 32 33 11 42 15 33 13 42 54 35 44 24 34 33 44 52 24 13 15 25 15 42 13 25 23 34 21 21 43...
11 31 11 33 44 45 42 24 33 22 12 42 34 25 15 15 33 24 22 32 11 52 24 44 23 13 42 24 12 43 11 33 14 44 23 15 12 34 32 12 15 32 11 13 23 24 33 15 14 34 45 12 31 15 44 42 11 33 43 35 34 43 24 44 24 34 33 11 35 35 31 24 15 43 13 34 31 45 32 33 11 42 15 33 13 42 54 35 44 24 34 33 44 52 24 13 15 25 15 42 13 25 23 34 21 21 43...
ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM
polybius
polybius
null
{}
hard
en
166
166
synthetic_educational
null
null
[ "pair_decode", "frequency_analysis" ]
Polybius square: 5×5 grid maps letters to two-digit row-column pairs.
bazeries-v3-0570
YIWFGAGAGGAVYWFMAVATGSTGTGYWFGYIWFMAGAGGAVYNOMSVHGYYPKMOHXMEYRRYGCDD
YIWFGAGAGGAVYWFMAVATGSTGTGYWFGYIWFMAGAGGAVYNOMSVHGYYPKMOHXMEYRRYGCDD
IN MY BEGINNING IS MY END AND IN MY END IS MY BEGINNING AS THE QUEEN OF SCOTS KNEW WELL
bazeries
bazeries
transposition
{ "type": "integer", "value": 67 }
advanced
en
68
68
cipher_museum
2.0
public
null
null
slidex-v3-0106
MEXIJKOCZTWYLVHHFN
MEXIJKOCZTWYLVHHFN
CROSS THE RUBICON NOW
slidex
slidex
transposition
{ "type": "keyword", "value": "LIBERTY" }
advanced
en
18
18
cipher_museum
2.0
public
null
null
columnar-transposition-v2-0244
UDHSILBUOTTIWGLIUASIEETETAETSHARCULDNPOHIHNRHEENEERLITAFENEIAIWIGCLSAITTHEAQNDDOOALSALEROCGIITHHNNEENLIDENHATTHEOTLADOSGVORWBHAANRHRUATG
UDHSILBUOTTIWGLIUASIEETETAETSHARCULDNPOHIHNRHEENEERLITAFENEIAIWIGCLSAITTHEAQNDDOOALSALEROCGIITHHNNEENLIDENHATTHEOTLADOSGVORWBHAANRHRUATG
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
columnar_transposition
columnar_transposition
transposition
{ "type": "keyword", "value": "FORTRESS" }
intermediate
en
136
136
cipher_museum
2.0
public
null
null
cda-0021868
6.23.2 9.19.1 8.48.11 20.6.3 13.13.9 9.35.11 2.42.12 15.17.1 3.44.1 8.24.3 6.12.1 2.38.12 9.32.15 13.29.6 3.18.9 15.12.2 18.15.4 3.33.6 19.42.11 10.13.2 8.40.1 3.5.8 15.5.4 16.18.5 11.44.1 17.8.9 8.49.8 1.7.5 2.14.4 5.39.12 8.12.3 18.3.1 8.9.12 3.43.13 2.34.9 15.24.12 15.45.10 20.38.2 5.38.8 5.42.10 19.15.6 8.43.7 14.9...
6.23.2 9.19.1 8.48.11 20.6.3 13.13.9 9.35.11 2.42.12 15.17.1 3.44.1 8.24.3 6.12.1 2.38.12 9.32.15 13.29.6 3.18.9 15.12.2 18.15.4 3.33.6 19.42.11 10.13.2 8.40.1 3.5.8 15.5.4 16.18.5 11.44.1 17.8.9 8.49.8 1.7.5 2.14.4 5.39.12 8.12.3 18.3.1 8.9.12 3.43.13 2.34.9 15.24.12 15.45.10 20.38.2 5.38.8 5.42.10 19.15.6 8.43.7 14.9...
MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY
book_cipher
book_cipher
null
{}
medium
en
44
44
synthetic_educational
null
null
[ "book_cipher_attack", "triple_index_search" ]
Book cipher: coordinates (page.line.word) referencing a shared document.
enigma-v2-0509
XVWKWFSSRTXVJHN
XVWKWFSSRTXVJHN
CAVALRY ADVANCES
enigma
enigma
machine
{ "type": "rotor_start", "value": "MNO" }
expert
en
15
15
cipher_museum
2.0
public
null
null
solitaire-v2-0042
LBKUFMOKAEWFOILTDWJCBVVPTROXAXWKFKEQEMSPVNUEGJO
LBKUFMOKAEWFOILTDWJCBVVPTROXAXWKFKEQEMSPVNUEGJO
THE COURSE OF TRUE LOVE NEVER DID RUN SMOOTH THROUGH AGES
solitaire
solitaire
stream
{ "type": "none", "value": null }
expert
en
47
47
cipher_museum
2.0
public
null
null
affine-v3-0192
KZQQZN BOK WNIILBO ZOMNOGNK UJEIZH FNV HAVUGRTABUWV ZO OZONGNNO DNMNOGV DZS HWBOTZOT NMNAVGWZOT
KZQQZN BOK WNIILBO ZOMNOGNK UJEIZH FNV HAVUGRTABUWV ZO OZONGNNO DNMNOGV DZS HWBOTZOT NMNAVGWZOT
DIFFIE AND HELLMAN INVENTED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX CHANGING EVERYTHING
affine
affine
substitution
{ "a": 3, "b": 1 }
beginner
en
83
95
cipher_museum
2.0
public
null
null
red-type-a-v3-0221
FVOXAHCGOEXNYWZIIBMEW
FVOXAHCGOEXNYWZIIBMEW
THE CASTLE IS SURROUNDED
red_type_a
red_type_a
machine
{ "type": "keyword", "value": "TOKYO" }
advanced
en
21
21
cipher_museum
2.0
public
null
null
diana-v2-0624
MKAZJBJFFARKOBQAQDSKARMCQRCSSJCEKGYSJMLWOTRMNAOXYCXCWQIMMDRAOAESYAWKHIONHEBVBHDNEOZVRUWSDVIUTESZWUFLAMZDIDYABDVMSDLXZXXRJRLYXIPXARKDOMKASZWUFLAMWORBFAEQGZZRRBMKHBALQOHONJCESMYSPAPKW
MKAZJBJFFARKOBQAQDSKARMCQRCSSJCEKGYSJMLWOTRMNAOXYCXCWQIMMDRAOAESYAWKHIONHEBVBHDNEOZVRUWSDVIUTESZWUFLAMZDIDYABDVMSDLXZXXRJRLYXIPXARKDOMKASZWUFLAMWORBFAEQGZZRRBMKHBALQOHONJCESMYSPAPKW
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
diana
diana
polyalphabetic
{ "type": "keyword", "value": "FREEDOM" }
intermediate
en
181
181
cipher_museum
2.0
public
null
null
kl7-v2-0477
TEBHOFLNIHDCBUKZYKPDXEKHEIGRWCJBFSCQFKYIKCCRIEEUMNKJSEAWMFZPAEGKGHCEUKDPB
TEBHOFLNIHDCBUKZYKPDXEKHEIGRWCJBFSCQFKYIKCCRIEEUMNKJSEAWMFZPAEGKGHCEUKDPB
ALEA IACTA EST ET CAESAR RUBICONE TRANSGRESSO BELLUM CIVILE INCIPIT PER TOTAM ROMANAM
kl7
kl7
machine
{ "type": "seed", "value": "ALLIANCE" }
expert
en
73
73
cipher_museum
2.0
public
null
null
venona-pad-reuse-v2-0173
5MBVVBMJPTXFW5L2CVVTUZIQA5T3PGME4QW7ZKMCATPDJBV3K2GVJSX35ASDRBTPMO
5MBVVBMJPTXFW5L2CVVTUZIQA5T3PGME4QW7ZKMCATPDJBV3K2GVJSX35ASDRBTPMO
WE ARE SUCH STUFF AS DREAMS ARE MADE ON AND OUR LITTLE LIFE IS ROUNDED WITH A SLEEP
venona_pad_reuse
venona_pad_reuse
stream
{ "type": "keyword", "value": "LIBERTY" }
expert
en
66
66
cipher_museum
2.0
public
null
null
fialka-v3-0103
IUGUHIFOVUXTHHDDXVNQKEQWUFPEDCQGGDONAQHVXRZGJSXOHXTBIILJIDRGAXGNKRWGFAMGQTZXRNJLSNVALICZKYTEREQROFXTGINZAIQYFDFBBLYYJYHIRZMTEVPMALAWDCEJSRFSIUMZDNGUZTIXFOFOFZULQNDKVDTANLLSZYDDZSPNMS
IUGUHIFOVUXTHHDDXVNQKEQWUFPEDCQGGDONAQHVXRZGJSXOHXTBIILJIDRGAXGNKRWGFAMGQTZXRNJLSNVALICZKYTEREQROFXTGINZAIQYFDFBBLYYJYHIRZMTEVPMALAWDCEJSRFSIUMZDNGUZTIXFOFOFZULQNDKVDTANLLSZYDDZSPNMS
WILLIAM FRIEDMAN WHO BROKE THE JAPANESE PURPLE CIPHER MACHINE BEFORE THE SECOND WORLD WAR ALSO COINED THE TERM CRYPTANALYSIS AND SPENT HIS CAREER AT THE SIGNALS INTELLIGENCE SERVICE BUILDING AMERICAN CODEBREAKING
fialka
fialka
machine
{ "type": "seed", "value": "MOSCOW" }
expert
en
182
182
cipher_museum
2.0
public
null
null
diana-v2-0533
QRLWZBKBQNWQIUKJCLPXO
QRLWZBKBQNWQIUKJCLPXO
PATIENCE BRINGS VICTORY
diana
diana
polyalphabetic
{ "type": "keyword", "value": "FREEDOM" }
intermediate
en
21
21
cipher_museum
2.0
public
null
null
diana-v2-0330
SOWCTYSGYKWFQAZULKRBDXZZYKPOEAMOVCWZXBLKWMSOGJQQRCFYRQBWKONOEAFBEBCCNPLSMLRGR
SOWCTYSGYKWFQAZULKRBDXZZYKPOEAMOVCWZXBLKWMSOGJQQRCFYRQBWKONOEAFBEBCCNPLSMLRGR
NAVAL UNITS IN POSITION OFF THE COAST AWAITING SIGNAL TO COMMENCE SHORE BOMBARDMENT AT DAWN
diana
diana
polyalphabetic
{ "type": "keyword", "value": "FORCES" }
intermediate
en
77
77
cipher_museum
2.0
public
null
null
kama-sutra-v2-0461
MJN CAYPN UL FYQNAMI YX NMNAERF DYKYFREPN REV MJN ZYFF MU VNLNEV YM RKRYEXM RFF LUNX REV MJANRMX
MJN CAYPN UL FYQNAMI YX NMNAERF DYKYFREPN REV MJN ZYFF MU VNLNEV YM RKRYEXM RFF LUNX REV MJANRMX
THE PRICE OF LIBERTY IS ETERNAL VIGILANCE AND THE WILL TO DEFEND IT AGAINST ALL FOES AND THREATS
kama_sutra
kama_sutra
substitution
{ "type": "keyword", "value": "WISDOM" }
intermediate
en
79
96
cipher_museum
2.0
public
null
null
bifid-v2-0395
MWFPHANSMQFFDHHFCLSOBILHVDCPFCITEMUACLBRYQEKHWLEASCEPHCAYXECBSSCEYZS
MWFPHANSMQFFDHHFCLSOBILHVDCPFCITEMUACLBRYQEKHWLEASCEPHCAYXECBSSCEYZS
COWARDS DIE MANY TIMES BEFORE THEIR DEATHS THE VALIANT NEVER TASTE DEATH BUT ONCE
bifid
bifid
fractionation
{ "type": "keyword", "value": "FREEDOM" }
advanced
en
68
68
cipher_museum
2.0
public
null
null
alberti-disk-v2-0125
OUEFLVXMEHPTUMPGQLBIZDRCJOXHMCSHTFGNDZPAJHZRIYBSUKYVUEPEDFFANDWCHGMOPEVWAVMWOIUHGYGQYICWPCWKHCJXXSLHCWKPPEQPVOVJNHQGNXJJEVQGZXOATBFOHMXLOCGNICRNHLZJJVBIWCAKCLXEUHDKODGTUBMG
OUEFLVXMEHPTUMPGQLBIZDRCJOXHMCSHTFGNDZPAJHZRIYBSUKYVUEPEDFFANDWCHGMOPEVWAVMWOIUHGYGQYICWPCWKHCJXXSLHCWKPPEQPVOVJNHQGNXJJEVQGZXOATBFOHMXLOCGNICRNHLZJJVBIWCAKCLXEUHDKODGTUBMG
THE GREAT CIPHER OF LOUIS XIV INVENTED BY ANTOINE AND BONAVENTURE ROSSIGNOL USED A NOMENCLATOR OF OVER FIVE HUNDRED NUMBERS REPRESENTING SYLLABLES WORDS AND NULLS AND REMAINED UNBROKEN FOR TWO CENTURIES
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 4 }
expert
en
172
172
cipher_museum
2.0
public
null
null
straddling-checkerboard-v3-0246
292213720224748922972456922
292213720224748922972456922
MEASURE TWICE CUT ONCE
straddling_checkerboard
straddling_checkerboard
substitution
{ "type": "top_row", "value": "RASTONICEL" }
advanced
en
27
27
cipher_museum
2.0
public
null
null
enigma-024
OCFNXEMQVC
OCFNXEMQVC
TRUST NO ONE
enigma
enigma
machine
{ "type": "rotor_start", "value": "AAA" }
expert
en
10
10
cipher_museum
0.2
public
null
null
cda-0011973
K r· L └ Γ· ¬ ┌· ⌐ ┌· ⌒· ┐· ┌· L X L ┌· K· L X ┐ ─ ┘· ⌒ └ L Γ ¬· L ⌐· ┘· ┌· K r· L r ┘· ┌ ┌ X· ─ Γ· K ⌒· K r· L ⌐ X· K ┘· ┐ L ⌒· r Γ· ┐· r· L ┌· L ⌣ K L ─ Γ X K r· L ┐ L ⌒· ⌒ Γ· K r· K r· L ┐· └ ⌐ Γ· ─ K L ⌣ K Γ· K X L └ ⌐· ⌐ ─ ⌐ ⌐· ⌐· Γ· ─ L r Γ· ┐· r· L ┌· ⌐ ┐· ┐· └ Γ· L X ⌐ └ Γ· ─ L ⌐ ┌· ⌐· X· ─ r K Γ· ┘· ─ K ┘· L ⌐...
K r· L └ Γ· ¬ ┌· ⌐ ┌· ⌒· ┐· ┌· L X L ┌· K· L X ┐ ─ ┘· ⌒ └ L Γ ¬· L ⌐· ┘· ┌· K r· L r ┘· ┌ ┌ X· ─ Γ· K ⌒· K r· L ⌐ X· K ┘· ┐ L ⌒· r Γ· ┐· r· L ┌· L ⌣ K L ─ Γ X K r· L ┐ L ⌒· ⌒ Γ· K r· K r· L ┐· └ ⌐ Γ· ─ K L ⌣ K Γ· K X L └ ⌐· ⌐ ─ ⌐ ⌐· ⌐· Γ· ─ L r Γ· ┐· r· L ┌· ⌐ ┐· ┐· └ Γ· L X ⌐ └ Γ· ─ L ⌐ ┌· ⌐· X· ─ r K Γ· ┘· ─ K ┘· L ⌐...
THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF
pigpen
pigpen
null
{}
hard
en
84
84
synthetic_educational
null
null
[ "symbol_frequency", "grid_position_decode" ]
Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids.
alberti-disk-v2-0050
FJJWJTUGNGKKFKSTSZOEABRLIJBBXTJYEIIXXZCCBFWPSEOWOIZZVRSODDPXZNAGTBXXWVGGFJ
FJJWJTUGNGKKFKSTSZOEABRLIJBBXTJYEIIXXZCCBFWPSEOWOIZZVRSODDPXZNAGTBXXWVGGFJ
GOOD NIGHT GOOD NIGHT PARTING IS SUCH SWEET SORROW THAT I SHALL SAY GOOD NIGHT TILL MORROW
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 4 }
expert
en
74
74
cipher_museum
2.0
public
null
null
gronsfeld-v2-1032
WIIXGOMWIGYFIBXV
WIIXGOMWIGYFIBXV
THE WALLS HAVE EARS
gronsfeld
gronsfeld
polyalphabetic
{ "type": "numeric", "value": "31416" }
intermediate
en
16
16
cipher_museum
2.0
public
null
null
navajo-code-v3-0019
THAN-ZIE CHA DZEH / WOL-LA-CHEE DIBEH-YAZZIE MOASI LIN AH-JAH TSIN-TLITI YEH-HES DIBEH A-WOH / DIBEH NO-DA-IH TLA-GIN MOASI DZEH AH-JAH LHA-CHA-EH KLESH
THAN-ZIE CHA DZEH / WOL-LA-CHEE DIBEH-YAZZIE MOASI LIN AH-JAH TSIN-TLITI YEH-HES DIBEH A-WOH / DIBEH NO-DA-IH TLA-GIN MOASI DZEH AH-JAH LHA-CHA-EH KLESH
THE ALCHEMIST SUCCEEDS
navajo_code
navajo_code
code
{ "type": "none", "value": null }
expert
en
131
160
cipher_museum
2.0
public
null
null
geez-monastic-006
BMEDTTAPKBNPSSTA
BMEDTTAPKBNPSSTA
PROCEED AS PLANNED
geez_monastic
geez_monastic
substitution
{ "type": "keyword", "value": "GEEZ" }
advanced
en
16
16
cipher_museum
0.2
public
null
null
wallis-cipher-v2-0217
90 15 44 63 91 155 90 30 54 76 53 91 90 12 79 55 84 63 41 91 90 69 76 81 63 18 45 58 91 90 15 44 76 91 90 45 58 54 20 33 91 90 61 77 47 82 40 15 85 66 63 91 90 25 35 91 90 45 44 76 91 90 85 30 41 91 90 75 58 72 55 73 44 91 90 75 25 79 20 15 89 18 55 33 91 90 47 45 91 90 41 18 67 81 91 90 15 85 27 25 20 55 85 23 91
90 15 44 63 91 155 90 30 54 76 53 91 90 12 79 55 84 63 41 91 90 69 76 81 63 18 45 58 91 90 15 44 76 91 90 45 58 54 20 33 91 90 61 77 47 82 40 15 85 66 63 91 90 25 35 91 90 45 44 76 91 90 85 30 41 91 90 75 58 72 55 73 44 91 90 75 25 79 20 15 89 18 55 33 91 90 47 45 91 90 41 18 67 81 91 90 15 85 27 25 20 55 85 23 91
THE SECRET LIES BURIED BENEATH THE THIRD FLAGSTONE OF THE OLD CHURCH COURTYARD AT DAWN TOMORROW
wallis_cipher
wallis_cipher
nomenclator
{ "type": "seed", "value": "ENGLAND" }
expert
en
211
315
cipher_museum
2.0
public
null
null
alberti-disk-v3-0773
VFPRCWDHOFGFKWGNVGWT
VFPRCWDHOFGFKWGNVGWT
STEAM POWER TRANSFORMS
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 17 }
expert
en
20
20
cipher_museum
2.0
public
null
null
four-square-084
CZPMOAUESFIAPOPZ
CZPMOAUESFIAPOPZ
EVACUATE THE BASE
four_square
four_square
polygraphic
{ "key1": "CIPHER", "key2": "MUSEUM" }
advanced
en
16
16
cipher_museum
0.2
public
null
null
lorenz-v3-0426
ONDDBYTHEALLIEDFORCESLANDEDONFIVENORMANDYBEACGESINTHEGREATESTSEABORNEINVASION
ONDDBYTHEALLIEDFORCESLANDEDONFIVENORMANDYBEACGESINTHEGREATESTSEABORNEINVASION
ON D DAY THE ALLIED FORCES LANDED ON FIVE NORMANDY BEACHES IN THE GREATEST SEABORNE INVASION
lorenz
lorenz
machine
{ "type": "seed", "value": "STURGEON" }
expert
en
77
77
cipher_museum
2.0
public
null
null
hill-084
EBKKSZGWZC
EBKKSZGWZC
TRUST NO ONE
hill
hill
polygraphic
{ "a": 3, "b": 3, "c": 2, "d": 7 }
advanced
en
10
10
cipher_museum
0.2
public
null
null
cda-0016438
OTAIN OKALQ OKEED YQOKE DYYTA IINYT AIINS HEDYO XEDOK AINOT AIINS HORCT AIIND AINYQ OKEED YSHAL DAIIN OKSHY OKSHY KAIII NQOKE EDYCH EDYOK EEDYC HOLOK EDYOR ORRCH EOLOT EDYAI IINAI IIN
OTAIN OKALQ OKEED YQOKE DYYTA IINYT AIINS HEDYO XEDOK AINOT AIINS HORCT AIIND AINYQ OKEED YSHAL DAIIN OKSHY OKSHY KAIII NQOKE EDYCH EDYOK EEDYC HOLOK EDYOR ORRCH EOLOT EDYAI IINAI IIN
THE BEST LESSONS SHOW WHERE THE METHOD FAILS ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN
voynich_render
voynich_render
null
{}
hard
en
153
153
synthetic_educational
null
null
[ "statistical_analysis", "unsolved" ]
Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output.
cda-0014080
EAIK AIKO QKMI GMOI AWEO ACIM CWMO IIIE CKQM QCAK FIJX IVSU LMXP OFHR IYIY OEYV FBIB SPMR YWGV ZMCL QGVS PYQP VSBR HMLI NDTC EOXR TGQ
EAIK AIKO QKMI GMOI AWEO ACIM CWMO IIIE CKQM QCAK FIJX IVSU LMXP OFHR IYIY OEYV FBIB SPMR YWGV ZMCL QGVS PYQP VSBR HMLI NDTC EOXR TGQ
CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX
running_key
running_key
null
{}
hard
en
107
107
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-v2-0357
EQT GTRZLTYE AZMM QKMX ZEF JKFZEZKY CYEZM GTZYSKGUTLTYEF WGGZBT SGKL EQT TWFETGY UKLLWYX JKFE QTGT
EQT GTRZLTYE AZMM QKMX ZEF JKFZEZKY CYEZM GTZYSKGUTLTYEF WGGZBT SGKL EQT TWFETGY UKLLWYX JKFE QTGT
THE REGIMENT WILL HOLD ITS POSITION UNTIL REINFORCEMENTS ARRIVE FROM THE EASTERN COMMAND POST HERE
kama_sutra
kama_sutra
substitution
{ "type": "keyword", "value": "INDIA" }
intermediate
en
84
98
cipher_museum
2.0
public
null
null
great-cipher-v2-0130
140 157 182 179 173 177 154 126 167 143 127
140 157 182 179 173 177 154 126 167 143 127
STORM THE BREACH
great_cipher
great_cipher
nomenclator
{ "type": "seed", "value": "ROSSIGNOL" }
expert
en
33
43
cipher_museum
2.0
public
null
null
fialka-175
LMSCDDDUMAEPZZYCGCKRNCWICMIFKJSIGVEWUOODYQWJYKAQVZYNYIIJUEDV
LMSCDDDUMAEPZZYCGCKRNCWICMIFKJSIGVEWUOODYQWJYKAQVZYNYIIJUEDV
EVERY SECRET HAS A KEEPER AND EVERY CODE HAS A BREAKER WHO SEEKS THE TRUTH
fialka
fialka
machine
{ "type": "seed", "value": "SECRET" }
expert
en
60
60
cipher_museum
0.2
public
null
null
cda-0006815
ZVRAO YYJWU ZYWSH AECMF CGHEL WSWKM LQESK MFQEY UNSIW ZGHZJ IIIZG PRBAE YVTCN ATSSU IWGZR KCRHK JWLGC YMLSH YAMGU IQMXU GVEHX HXZRV OERBU KDVGM OIFZC LJMBP YJCLK HRTEV OHRCP HAHFE EQFOO IIPQW GMDBW IVPZR XTGY
ZVRAO YYJWU ZYWSH AECMF CGHEL WSWKM LQESK MFQEY UNSIW ZGHZJ IIIZG PRBAE YVTCN ATSSU IWGZR KCRHK JWLGC YMLSH YAMGU IQMXU GVEHX HXZRV OERBU KDVGM OIFZC LJMBP YJCLK HRTEV OHRCP HAHFE EQFOO IIPQW GMDBW IVPZR XTGY
KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER
autokey
autokey
null
{ "primer": "PRAYER" }
hard
en
174
174
synthetic_educational
null
null
[ "running_key_analysis", "index_of_coincidence" ]
Autokey: Vigenère where the plaintext extends the key — harder to Kasiski-attack.
m209-v2-0272
BFKNDDKTQSMQVSHBWDPWYA
BFKNDDKTQSMQVSHBWDPWYA
EXTRACTION POINT CHANGED
m209
m209
machine
{ "type": "seed", "value": "LIBERTY" }
expert
en
22
22
cipher_museum
2.0
public
null
null
cda-0012812
59 99 52 23 53 72 46 87 26 93 99 35 59 52 33 81 21 48 40 22 82 11 14 58 48 11 30 48 91 60 22 34 46 58 33 36 32 48 99 35 92 64 49 50 68 58 66 67 32 68 66 26 70 52 66 24 3 2 63 94 82 81 64 68 58 66 57 58 1 63 88 46 3 33 36 14 23 99 35 66 22 43 23 53 63 26 50 48 50 93 4 63 30 48 21 93 63 17 22 34 50 2 50 60 58 72 70 57 21...
59 99 52 23 53 72 46 87 26 93 99 35 59 52 33 81 21 48 40 22 82 11 14 58 48 11 30 48 91 60 22 34 46 58 33 36 32 48 99 35 92 64 49 50 68 58 66 67 32 68 66 26 70 52 66 24 3 2 63 94 82 81 64 68 58 66 57 58 1 63 88 46 3 33 36 14 23 99 35 66 22 43 23 53 63 26 50 48 50 93 4 63 30 48 21 93 63 17 22 34 50 2 50 60 58 72 70 57 21...
INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS A STRONG CLAIM NEEDS STRONG EVIDENCE
homophonic
homophonic
null
{}
hard
en
132
132
synthetic_educational
null
null
[ "frequency_analysis", "multiple_ciphertext_attack" ]
Homophonic substitution: each letter maps to multiple possible numbers.
cda-0002732
TIGSP FEMIR BNUCV THVFV LTLQQ OAJTV SKRLB COCEF WBKCL THZKR QKYFT USWIV ZAONF VCCQE VWYOA ZRHOO CUIKA ULJWP ZGOAJ FKXWP NBQXS UGPWY NLLND POGWK UJLNX DAPNZ TUGUR XHLNX BPYNY XDXUE UDIPE QOOUI IQJBA NCLPV UXJJW JOZJZ CZSUJ HVJVL ICSYS XSN
TIGSP FEMIR BNUCV THVFV LTLQQ OAJTV SKRLB COCEF WBKCL THZKR QKYFT USWIV ZAONF VCCQE VWYOA ZRHOO CUIKA ULJWP ZGOAJ FKXWP NBQXS UGPWY NLLND POGWK UJLNX DAPNZ TUGUR XHLNX BPYNY XDXUE UDIPE QOOUI IQJBA NCLPV UXJJW JOZJZ CZSUJ HVJVL ICSYS XSN
THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY
trithemius
trithemius
null
{}
hard
en
198
198
synthetic_educational
null
null
[ "progressive_shift_detection", "frequency_analysis" ]
Trithemius: progressive Caesar (shift = letter position); no key needed.
nihilist-v3-0030
65 24 97 56 57 46 56 46 96 75 57 40 56 57 88 86 28 26 63 27 87 59 47 59 33 56 75 79 47
65 24 97 56 57 46 56 46 96 75 57 40 56 57 88 86 28 26 63 27 87 59 47 59 33 56 75 79 47
TAXATION WITHOUT REPRESENTATION
nihilist
nihilist
fractionation
{ "polybius": "PALACE", "keyword": "BATTLE" }
advanced
en
58
86
cipher_museum
2.0
public
null
null
adfgvx-v2-0491
AFFDDFDFDXFDDDDFDFDXFVGVAVAVDXAFGDDDGXAVAVAFAXDFXFGAFFDGFGVDFDDFAAFGFAVGVDDDAAVADFVDFADGDAFFFAFFGFFVADFDDDXADAAGFADDGGDDGGXDFDDADDFDAAGGDGFDDVDDAFDXDVDFGVDVDVAFAAGVGFDAFDDVGFAVDADAAVDFAADXAFDVDGGADAVDDAADFGXGFDXADDFDAFFGXAGGFDFAFAXFFDDAFAXDFADDFVFDFGDAFGVGDFFGXAFGFDGADFDGFAVAVGXAGAFDDAAGGADFAAFDAADFAFDFAFVGDFADGFADAVFX...
AFFDDFDFDXFDDDDFDFDXFVGVAVAVDXAFGDDDGXAVAVAFAXDFXFGAFFDGFGVDFDDFAAFGFAVGVDDDAAVADFVDFADGDAFFFAFFGFFVADFDDDXADAAGFADDGGDDGGXDFDDADDFDAAGGDGFDDVDDAFDXDVDFGVDVDVAFAAGVGFDAFDDVGFAVDADAAVDFAADXAFDVDGGADAVDDAADFGXGFDXADDFDAFFGXAGGFDFAFAXFFDDAFAXDFADDFVFDFGDAFGVGDFFGXAFGFDGADFDGFAVAVGXAGAFDDAAGGADFAAFDAADFAFDFAFVGDFADGFADAVFX...
GENTLEMEN MAY CRY PEACE PEACE BUT THERE IS NO PEACE THE WAR IS ACTUALLY BEGUN THE NEXT GALE THAT SWEEPS FROM THE NORTH WILL BRING TO OUR EARS THE CLASH OF RESOUNDING ARMS OUR BRETHREN ARE ALREADY IN THE FIELD
adfgvx
adfgvx
fractionation
{ "polybius": "DRAGON", "columnar": "THUNDER" }
advanced
en
338
338
cipher_museum
2.0
public
null
null
trifid-vg-0003
TGFSNWWDMNBEALYNCJDELWUODHNCBXHRFXNAT
TGFSNWWDMNBEALYNCJDELWUODHNCBXHRFXNAT
THE HARVEST IS PLENTIFUL BUT THE WORKERS FEW
trifid
trifid
fractionation
{ "type": "keyword", "value": "FELIX" }
advanced
en
37
37
cipher_museum
2.0
public
null
null
chaocipher-064
SOCQLBEWPSXVNCSMJUJP
SOCQLBEWPSXVNCSMJUJP
RENDEZVOUS AT MIDNIGHT
chaocipher
chaocipher
machine
{ "type": "keyword", "value": "CIPHER" }
advanced
en
20
20
cipher_museum
0.2
public
null
null
cda-0011265
GUSIV URASE RQVCV REHFN FOESC NOGVA TXSLJ BEROF GEBAU QYOVZ ARRRF FGEBA TNIVQ SAQSF HPFGN GHGVB AQVCU NEFZO CNOQU YRGGR EGBOR VSTRE SAGYR GGREC BYLOY CUOPR GWPQN CUSEF HFRZH YGVCY ROYCU ONNGF UWSGF
GUSIV URASE RQVCV REHFN FOESC NOGVA TXSLJ BEROF GEBAU QYOVZ ARRRF FGEBA TNIVQ SAQSF HPFGN GHGVB AQVCU NEFZO CNOQU YRGGR EGBOR VSTRE SAGYR GGREC BYLOY CUOPR GWPQN CUSEF HFRZH YGVCY ROYCU ONNGF UWSGF
THE VIGENERE CIPHER USES A REPEATING KEYWORD A STRONG CLAIM NEEDS STRONG EVIDENCE SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS
porta
porta
null
{ "key": "CIPHER" }
hard
en
165
165
synthetic_educational
null
null
[]
cda-0003679
NYNA GHEVAT OEBXR RAVTZN JVGU PEVOF NAQ GUR OBZOR ZNPUVAR QVTENCU NAQ GEVTENCU SERDHRAPVRF RKCBFR FVZCYR PVCUREF REEBE PBEERPGVBA NAQ QRGRPGVBA NER SHAQNZRAGNY GB FRPHER FLFGRZF GUR ENVY SRAPR PVCURE JEVGRF GRKG VA N MVTMNT CNGGREA
NYNA GHEVAT OEBXR RAVTZN JVGU PEVOF NAQ GUR OBZOR ZNPUVAR QVTENCU NAQ GEVTENCU SERDHRAPVRF RKCBFR FVZCYR PVCUREF REEBE PBEERPGVBA NAQ QRGRPGVBA NER SHAQNZRAGNY GB FRPHER FLFGRZF GUR ENVY SRAPR PVCURE JEVGRF GRKG VA N MVTMNT CNGGREA
ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN
rot13
rot13
null
{ "shift": 13 }
hard
en
196
196
synthetic_educational
null
null
[ "brute_force_26", "self_inverse_check" ]
ROT-13 is Caesar with shift 13 — it is its own inverse.
wheatstone-v3-0082
LJIPNROOOHTDDFTCRIJDTVNROKRLQYIPTIROQTEDYOHFRIQJANRDYPYJIJNKNJHYEYQYIPQHRANRRRWRNLYOR
LJIPNROOOHTDDFTCRIJDTVNROKRLQYIPTIROQTEDYOHFRIQJANRDYPYJIJNKNJHYEYQYIPQHRANRRRWRNLYOR
CONGRESS SHALL MAKE NO LAW RESPECTING AN ESTABLISHMENT OF RELIGION OR PROHIBITING THE FREE EXERCISE
wheatstone
wheatstone
polygraphic
{ "type": "keyword", "value": "TELEGRAPHY" }
advanced
en
85
85
cipher_museum
2.0
public
null
null
vigenere-v3-0427
DMESOELRGXOGLRPRSAD
DMESOELRGXOGLRPRSAD
AVE MARIA GRATIA PLENA
vigenere
vigenere
polyalphabetic
{ "type": "keyword", "value": "DRAGON" }
intermediate
en
19
19
cipher_museum
2.0
public
null
null
kl7-v3-0071
HSXKWXRCQBRBYSLNUANQQMETVSIWAYLIPWWTQUQRDZZXQZWGDUZSXXIHIIUQHJPKYERLNFTWCXV
HSXKWXRCQBRBYSLNUANQQMETVSIWAYLIPWWTQUQRDZZXQZWGDUZSXXIHIIUQHJPKYERLNFTWCXV
NEWTON SAW THE APPLE FALL AND INTUITED THE SAME FORCE THAT HOLDS THE PLANETS IN THEIR PATHS
kl7
kl7
machine
{ "type": "seed", "value": "NATO" }
expert
en
75
75
cipher_museum
2.0
public
null
null
cda-0015411
SCOUT ENTER CROSS UNDER RIGHT INTEL TURNS YEARS CLEAR LEADS ABOVE INPUT MOTOR SHORE STAGE HEAVY ORDER UNITE LOWER DELAY BELOW EARLY THREE EIGHT SHORE
SCOUT ENTER CROSS UNDER RIGHT INTEL TURNS YEARS CLEAR LEADS ABOVE INPUT MOTOR SHORE STAGE HEAVY ORDER UNITE LOWER DELAY BELOW EARLY THREE EIGHT SHORE
SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS
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.
cda-0015852
TKINT SAHBE DZEHA LANAS DZOHA KHAMA EMOAS IAKHA TKINT SAHMO ASITK INBED ZEHTS AHMOA SIDZE HNAAS TSOSI DZEHW OLLAC HEEDI BEHNO DAIHG AHDZE HDIBE HDIBE HYAZZ IEDZE HTHAN ZIETH ANZIE DZEHG AHMAE GAHDZ EHCAY EILTH NODAI HDZEH TSAHM OASI
TKINT SAHBE DZEHA LANAS DZOHA KHAMA EMOAS IAKHA TKINT SAHMO ASITK INBED ZEHTS AHMOA SIDZE HNAAS TSOSI DZEHW OLLAC HEEDI BEHNO DAIHG AHDZE HDIBE HDIBE HYAZZ IEDZE HTHAN ZIETH ANZIE DZEHG AHMAE GAHDZ EHCAY EILTH NODAI HDZEH TSAHM OASI
INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM THE ARCHITECTURE SHOULD MAKE MISUSE HARDER PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH
navajo_code
navajo_code
null
{}
hard
en
194
194
synthetic_educational
null
null
[ "codebook_frequency", "word_list_attack" ]
Navajo Code Talker cipher: Navajo words represent English letters.
lorenz-v2-0493
THISBBOVEALLTOTHINEOWNSELFBETRUEANDITMUSTFOLLPWASNIGHTTHEDAY
THISBBOVEALLTOTHINEOWNSELFBETRUEANDITMUSTFOLLPWASNIGHTTHEDAY
THIS ABOVE ALL TO THINE OWN SELF BE TRUE AND IT MUST FOLLOW AS NIGHT THE DAY
lorenz
lorenz
machine
{ "type": "seed", "value": "STURGEON" }
expert
en
60
60
cipher_museum
2.0
public
null
null
cda-0012440
5.2.6 12.2.1 9.3.3 19.3.7 16.5.4 10.2.4 10.4.10 1.6.2 4.5.5 10.3.7 3.2.2 13.4.3 4.2.3 16.5.9 4.1.5 15.5.8 4.3.6 2.4.2 7.5.1 1.5.3 6.2.10 8.2.4 6.6.6 17.1.8 13.1.8 11.1.10 5.5.5 18.4.5 1.6.1 9.3.9 20.6.2 5.5.2 18.3.5 19.5.7 17.2.1 10.5.1 7.6.7 13.5.3 19.1.6 1.6.3 10.5.9 17.3.9 16.2.7 7.4.1 3.1.1 2.5.5 3.3.1 6.5.3 11.5.4...
5.2.6 12.2.1 9.3.3 19.3.7 16.5.4 10.2.4 10.4.10 1.6.2 4.5.5 10.3.7 3.2.2 13.4.3 4.2.3 16.5.9 4.1.5 15.5.8 4.3.6 2.4.2 7.5.1 1.5.3 6.2.10 8.2.4 6.6.6 17.1.8 13.1.8 11.1.10 5.5.5 18.4.5 1.6.1 9.3.9 20.6.2 5.5.2 18.3.5 19.5.7 17.2.1 10.5.1 7.6.7 13.5.3 19.1.6 1.6.3 10.5.9 17.3.9 16.2.7 7.4.1 3.1.1 2.5.5 3.3.1 6.5.3 11.5.4...
TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE
arnold_andre
arnold_andre
null
{}
hard
en
106
106
synthetic_educational
null
null
[ "book_cipher_attack", "triple_index_search" ]
Arnold-André book cipher: coordinates (page.section.word) referencing a shared text.
bifid-v2-0102
RCAMLUIAIFTLSSMSSCLKNPINQTOASNBPTCIMIKLTBQUWYLYRLOXBSEIQYYQKVSWUOTKDPXHNZWNWTXKRENZH
RCAMLUIAIFTLSSMSSCLKNPINQTOASNBPTCIMIKLTBQUWYLYRLOXBSEIQYYQKVSWUOTKDPXHNZWNWTXKRENZH
THE REGIMENT WILL HOLD ITS POSITION UNTIL REINFORCEMENTS ARRIVE FROM THE EASTERN COMMAND POST HERE
bifid
bifid
fractionation
{ "type": "keyword", "value": "PALACE" }
advanced
en
84
84
cipher_museum
2.0
public
null
null
autokey-v3-0350
RVEWXFQFAIUYTYMKVEI
RVEWXFQFAIUYTYMKVEI
MEASURE TWICE CUT ONCE
autokey
autokey
polyalphabetic
{ "type": "keyword", "value": "FREEDOM" }
intermediate
en
19
19
cipher_museum
2.0
public
null
null
kl7-v3-0362
GCWNWVKFUXVHJORPEMRRESCHUVWRRFCJUTVQBMXSCJQLNGFWLRKHSRGXAIEKIKDXDQMU
GCWNWVKFUXVHJORPEMRRESCHUVWRRFCJUTVQBMXSCJQLNGFWLRKHSRGXAIEKIKDXDQMU
IN MY BEGINNING IS MY END AND IN MY END IS MY BEGINNING AS THE QUEEN OF SCOTS KNEW WELL
kl7
kl7
machine
{ "type": "seed", "value": "ALLIANCE" }
expert
en
68
68
cipher_museum
2.0
public
null
null
hill-v2-0059
ICLVDVGPCSMDDPOXRRMIPPYONNPWYOVOKRDEBXXIEPPYHWCBLDWOREVBVMNNXAEPPYDEPDVM
ICLVDVGPCSMDDPOXRRMIPPYONNPWYOVOKRDEBXXIEPPYHWCBLDWOREVBVMNNXAEPPYDEPDVM
WE SHALL FIGHT ON THE BEACHES AND WE SHALL FIGHT ON THE LANDING GROUNDS AND IN THE FIELDS
hill
hill
polygraphic
{ "a": 3, "b": 5, "c": 2, "d": 9 }
advanced
en
72
72
cipher_museum
2.0
public
null
null
m209-162
BLGNJPYLCNWFUKJVBNLBCLXBYPWLAAHLVPXAPSPIQVCCLVQPKZKOQEBFYLMEKTZN
BLGNJPYLCNWFUKJVBNLBCLXBYPWLAAHLVPXAPSPIQVCCLVQPKZKOQEBFYLMEKTZN
CRYPTOGRAPHY IS THE PRACTICE OF SECURING COMMUNICATIONS FROM ADVERSARIES
m209
m209
machine
{ "type": "seed", "value": "SECRET" }
expert
en
64
64
cipher_museum
0.2
public
null
null
vigenere-v3-1467
TMMGMGPTXZUFXHICMHM
TMMGMGPTXZUFXHICMHM
AVE MARIA GRATIA PLENA
vigenere
vigenere
polyalphabetic
{ "type": "keyword", "value": "TRIUMPH" }
intermediate
en
19
19
cipher_museum
2.0
public
null
null
caesar-es-034
OBOT ET KXINUEBVT XLITGHET
OBOT ET KXINUEBVT XLITGHET
VIVA LA REPUBLICA ESPANOLA
caesar
caesar
substitution
{ "type": "shift", "value": 19 }
beginner
es
23
26
cipher_museum
0.2
public
null
null
cda-0019314
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 77 50 61 59 61 82 36 68 80 11 82 80 68 61 52 43 66 68 57 82 50 61 68 80 69 11 59 61 82 11 20 43 61 65 68 80 66 68 29 61 66 69 82 29 52 80 43 65 66 77 82 61 61 68 25 82 61 68 57 89 68 43 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 77 50 61 59 61 82 36 68 80 11 82 80 68 61 52 43 66 68 57 82 50 61 68 80 69 11 59 61 82 11 20 43 61 65 68 80 66 68 29 61 66 69 82 29 52 80 43 65 66 77 82 61 61 68 25 82 61 68 57 89 68 43 61
THE ARCHITECTURE SHOULD MAKE MISUSE HARDER A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES ALWAYS
wallis_cipher
wallis_cipher
null
{}
hard
en
88
88
synthetic_educational
null
null
[ "number_substitution_decode", "frequency_analysis" ]
Wallis cipher: each letter mapped to a unique two-digit number from a fixed table.
copiale-v2-0146
I2 F5 U2 Z4 E8 V8 Y8 O3 O1 E6 S8 T4 O2 F7 G4 E0 M4 D6 L2 K4 N9 P2
I2 F5 U2 Z4 E8 V8 Y8 O3 O1 E6 S8 T4 O2 F7 G4 E0 M4 D6 L2 K4 N9 P2
EXTRACTION POINT CHANGED
copiale
copiale
substitution
{ "type": "keyword", "value": "TEMPLE" }
advanced
en
44
65
cipher_museum
2.0
public
null
null
vernam-v2-0169
YJXYXZYOWCNAQLMVMMCDXVZEGTUDIROCHIBSTZHJGYCRLMAFVSXZUOWNTQOXCCTZHKGJNYQCBGK
YJXYXZYOWCNAQLMVMMCDXVZEGTUDIROCHIBSTZHJGYCRLMAFVSXZUOWNTQOXCCTZHKGJNYQCBGK
IN THE BEGINNING GOD CREATED THE HEAVEN AND THE EARTH AND DARKNESS WAS UPON THE FACE OF DEEP
vernam
vernam
stream
{ "type": "pad", "value": "QWERTY (repeating)" }
expert
en
75
75
cipher_museum
2.0
public
null
null
diana-v3-0379
PIIMDGCHBBJNOKRVYLKPGSRHCYZHHUWBETYYFTLJBYIUHDGPRHXTHDOXUEBLKAYBAOYQPYRPD
PIIMDGCHBBJNOKRVYLKPGSRHCYZHHUWBETYYFTLJBYIUHDGPRHXTHDOXUEBLKAYBAOYQPYRPD
WATSON WE HAVE FOUND THE STRUCTURE OF DNA AND IT IS A DOUBLE HELIX OF BREATHTAKING BEAUTY
diana
diana
polyalphabetic
{ "type": "keyword", "value": "LIBERTY" }
intermediate
en
73
73
cipher_museum
2.0
public
null
null
cda-0012830
- .... . / .- ..- - --- -.- . -.-- / -.-. .. .--. .... . .-. / . -..- - . -. -.. ... / - .... . / -.- . -.-- / .-- .. - .... / - .... . / .--. .-.. .- .. -. - . -..- - / .. - ... . .-.. ..-.
- .... . / .- ..- - --- -.- . -.-- / -.-. .. .--. .... . .-. / . -..- - . -. -.. ... / - .... . / -.- . -.-- / .-- .. - .... / - .... . / .--. .-.. .- .. -. - . -..- - / .. - ... . .-.. ..-.
THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF
morse_code
morse_code
null
{}
medium
en
51
51
synthetic_educational
null
null
[ "symbol_decode", "frequency_analysis" ]
Morse code: dots and dashes; word-separated by / symbol.
cda-0012735
aiiin okain shedy raiin qokeedy chedy qokeedy daiin kaiiin qokal otaiin cheol qotedy cheol raiin chol sheol
aiiin okain shedy raiin qokeedy chedy qokeedy daiin kaiiin qokal otaiin cheol qotedy cheol raiin chol sheol
THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF
voynich_render
voynich_render
null
{}
hard
en
91
91
synthetic_educational
null
null
[ "statistical_analysis", "unsolved" ]
Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output.
kama-sutra-v3-0384
MJN FUDN UL TUENI YX MJN AUUM UL RFF NDYF QOM YM YX MJN FUDN UL KUUV MJRM TUDNX MJN ZUAFV
MJN FUDN UL TUENI YX MJN AUUM UL RFF NDYF QOM YM YX MJN FUDN UL KUUV MJRM TUDNX MJN ZUAFV
THE LOVE OF MONEY IS THE ROOT OF ALL EVIL BUT IT IS THE LOVE OF GOOD THAT MOVES THE WORLD
kama_sutra
kama_sutra
substitution
{ "type": "keyword", "value": "WISDOM" }
intermediate
en
69
89
cipher_museum
2.0
public
null
null
chaocipher-v3-0434
GGWNQFNXSAVMPHSEMDF
GGWNQFNXSAVMPHSEMDF
TREACHERY IN THE COURT
chaocipher
chaocipher
machine
{ "type": "keyword", "value": "TRIUMPH" }
advanced
en
19
19
cipher_museum
2.0
public
null
null
four-square-v3-0411
RKHQFDKGOORPURQQIMWISZ
RKHQFDKGOORPURQQIMWISZ
SONS OF LIBERTY ASSEMBLE
four_square
four_square
polygraphic
{ "key1": "WISDOM", "key2": "COURAGE" }
advanced
en
22
22
cipher_museum
2.0
public
null
null
rot13-es-007
IVIN YN ERCHOYVPN RFCNABYN
IVIN YN ERCHOYVPN RFCNABYN
VIVA LA REPUBLICA ESPANOLA
rot13
rot13
substitution
{ "type": "none", "value": null }
beginner
es
23
26
cipher_museum
0.2
public
null
null
enigma-v3-0370
OQQJOKMLRUSJDRPPPTMUDGQECUVRNQDQHUBVAPVRITOKVXMXUXWDTBPBTEYIJGCLKTVCXWVXBU
OQQJOKMLRUSJDRPPPTMUDGQECUVRNQDQHUBVAPVRITOKVXMXUXWDTBPBTEYIJGCLKTVCXWVXBU
THE LIGHT YOU SEE FROM DISTANT STARS LEFT THOSE SUNS THOUSANDS OF YEARS BEFORE YOUR BIRTH
enigma
enigma
machine
{ "type": "rotor_start", "value": "JKL" }
expert
en
74
74
cipher_museum
2.0
public
null
null
babington-v3-0096
⟨w28⟩ ⟨a16⟩ ⟨n04⟩ ⟨a05⟩ ⟨n04⟩ ⟨w28⟩ ⟨w13⟩ ⟨a14⟩
⟨w28⟩ ⟨a16⟩ ⟨n04⟩ ⟨a05⟩ ⟨n04⟩ ⟨w28⟩ ⟨w13⟩ ⟨a14⟩
EUREKA
babington
babington
nomenclator
{ "type": "seed", "value": "SCOTLAND" }
expert
en
40
47
cipher_museum
2.0
public
null
null
noisy-caesar-telegraph-033
WKH LQGHA RI FRLQFLGHQFH PHDVXUHV WKH SUREDELOLWB WKDW WZR UDQGRPO BFKRVHQ OHWWHUV DUH HTXDO
WKH LQGHA RI FRLQFLGHQFH PHDVXUHV WKH SUREDELOLWB WKDW WZR UDQGRPO BFKRVHQ OHWWHUV DUH HTXDO
THE INDEX OF COINCIDENCE MEASURES THE PROBABILITY THAT TWO RANDOMLY CHOSEN LETTERS ARE EQUAL
caesar
caesar
substitution
{ "type": "shift", "value": 3 }
beginner
en
79
92
cipher_museum
0.2
public
null
null
four-square-v2-0508
KKRPBQNRQEFLSSCGPIDKPTTU
KKRPBQNRQEFLSSCGPIDKPTTU
NORTH STAR HOLDS FIRM COURSE
four_square
four_square
polygraphic
{ "key1": "WISDOM", "key2": "COURAGE" }
advanced
en
24
24
cipher_museum
2.0
public
null
null
vic-v2-0128
9068882490628791188480
9068882490628791188480
TARGET ACQUIRED
vic
vic
substitution
{ "type": "keyword", "value": "NICKEL" }
advanced
en
22
22
cipher_museum
2.0
public
null
null
cda-0019380
44 23 15 15 33 24 22 32 11 32 11 13 23 24 33 15 45 43 15 14 42 34 44 34 42 43 44 34 13 42 15 11 44 15 11 35 34 31 54 11 31 35 23 11 12 15 44 24 13 13 24 35 23 15 42
44 23 15 15 33 24 22 32 11 32 11 13 23 24 33 15 45 43 15 14 42 34 44 34 42 43 44 34 13 42 15 11 44 15 11 35 34 31 54 11 31 35 23 11 12 15 44 24 13 13 24 35 23 15 42
THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER
polybius
polybius
null
{}
medium
en
55
55
synthetic_educational
null
null
[ "pair_decode", "frequency_analysis" ]
Polybius square: 5×5 grid maps letters to two-digit row-column pairs.
trifid-212
HDJEHKCVUSRXUYUHAUYQSVCMO++QGPMI+LXIAEJPBFJLX
HDJEHKCVUSRXUYUHAUYQSVCMO++QGPMI+LXIAEJPBFJLX
NEVER INTERRUPT YOUR ENEMY WHEN HE IS MAKING A MISTAKE
trifid
trifid
fractionation
{ "type": "keyword", "value": "MUSEUM" }
advanced
en
45
45
cipher_museum
0.2
public
null
null
two-square-v3-0231
RGGUELEGRAHGMNPPSMITOZ
RGGUELEGRAHGMNPPSMITOZ
THE TELEGRAPH TRANSMITS
two_square
two_square
polygraphic
{ "key1": "TRIUMPH", "key2": "JUSTICE" }
advanced
en
22
22
cipher_museum
2.0
public
null
null
argenti-v3-0232
75 20 11 16 39 44 57 71 33 10 39 42 59 13 65
75 20 11 16 39 44 57 71 33 10 39 42 59 13 65
THE WIND IS WITH US
argenti
argenti
nomenclator
{ "type": "seed", "value": "VATICAN" }
expert
en
30
44
cipher_museum
2.0
public
null
null
trifid-v3-0057
VGTYTKXRXYCPZJHVFZE+GUNVSOFALUHWSMIEJWUHRE+FJPAGCQYPD+KEEASCBVPCQJITJHW
VGTYTKXRXYCPZJHVFZE+GUNVSOFALUHWSMIEJWUHRE+FJPAGCQYPD+KEEASCBVPCQJITJHW
TO INFINITY AND BEYOND THE FRONTIER OF HUMAN KNOWLEDGE CALLS TO EACH GENERATION ANEW
trifid
trifid
fractionation
{ "type": "keyword", "value": "PALACE" }
advanced
en
71
71
cipher_museum
2.0
public
null
null
gronsfeld-v2-0153
JQPQTCDQXGCNN
JQPQTCDQXGCNN
HONOR ABOVE ALL
gronsfeld
gronsfeld
polyalphabetic
{ "type": "numeric", "value": "22222" }
intermediate
en
13
13
cipher_museum
2.0
public
null
null
running-key-v2-0072
AXEBDIMCUYGII
AXEBDIMCUYGII
E PLURIBUS UNUM
running_key
running_key
polyalphabetic
{ "type": "text", "value": "Lincoln Second Inaugural" }
intermediate
en
13
13
cipher_museum
2.0
public
null
null
beaufort-v2-1029
DRBXBGGVAEO
DRBXBGGVAEO
KNOW THYSELF
beaufort
beaufort
polyalphabetic
{ "type": "keyword", "value": "NEPTUNE" }
intermediate
en
11
11
cipher_museum
2.0
public
null
null
cda-0013110
LKAI INOT AIND ARAL CHED ALDA INYS HARA LOTE DYSH ARAL QOTE DYOR ORYK CHEO LOTA IINO KAIN OKAL CHED YOXE DSHA LSHA LCHO LDAI INQO TEDY CHOL SHEO LSHA IINC HEDY OTAI INDA IINQ OTED YRCH EOLO TEDY RAII NQOK EEDY CTAI INDA LDAR ALYK CHEO LKAI IINS HALS HAII NOXE DSHA LSHO RCHE DALS HARA LOTE DYOR ORQO TEDY SHEE DYCH OLDA ...
LKAI INOT AIND ARAL CHED ALDA INYS HARA LOTE DYSH ARAL QOTE DYOR ORYK CHEO LOTA IINO KAIN OKAL CHED YOXE DSHA LSHA LCHO LDAI INQO TEDY CHOL SHEO LSHA IINC HEDY OTAI INDA IINQ OTED YRCH EOLO TEDY RAII NQOK EEDY CTAI INDA LDAR ALYK CHEO LKAI IINS HALS HAII NOXE DSHA LSHO RCHE DALS HARA LOTE DYOR ORQO TEDY SHEE DYCH OLDA ...
FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS A STRONG CLAIM NEEDS STRONG EVIDENCE MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS
voynich_render
voynich_render
null
{}
hard
en
287
287
synthetic_educational
null
null
[ "statistical_analysis", "unsolved" ]
Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output.
typex-v2-0214
QDIIFRPSXXVZOQTSWQMLAPGNMNBHSETRXEBXRJAFHGOUWQGPKXFCLBHHZDEDHSFMOUPMAHCPXHJMVJK
QDIIFRPSXXVZOQTSWQMLAPGNMNBHSETRXEBXRJAFHGOUWQGPKXFCLBHHZDEDHSFMOUPMAHCPXHJMVJK
CLAUDE SHANNON PROVED THAT THE ONE TIME PAD ACHIEVES PERFECT SECRECY WHEN USED CORRECTLY ONCE
typex
typex
machine
{ "type": "keyword", "value": "BRITAIN" }
expert
en
79
79
cipher_museum
2.0
public
null
null
babington-046
⟨w18⟩ ⟨a14⟩ ⟨w23⟩ ⟨a13⟩ ⟨w13⟩ ⟨w25⟩ ⟨a11⟩ ⟨w32⟩ ⟨n03⟩ ⟨w18⟩ ⟨w19⟩ ⟨w32⟩ ⟨w10⟩ ⟨w25⟩ ⟨w13⟩ ⟨a11⟩
⟨w18⟩ ⟨a14⟩ ⟨w23⟩ ⟨a13⟩ ⟨w13⟩ ⟨w25⟩ ⟨a11⟩ ⟨w32⟩ ⟨n03⟩ ⟨w18⟩ ⟨w19⟩ ⟨w32⟩ ⟨w10⟩ ⟨w25⟩ ⟨w13⟩ ⟨a11⟩
PROCEED AS PLANNED
babington
babington
nomenclator
{ "type": "seed", "value": "SECRET" }
expert
en
80
95
cipher_museum
0.2
public
null
null
atbash-de-011
PVRM PLNNVMGZI AFI OZTV
PVRM PLNNVMGZI AFI OZTV
KEIN KOMMENTAR ZUR LAGE
atbash
atbash
substitution
{ "type": "none", "value": null }
beginner
de
20
23
cipher_museum
0.2
public
null
null
hill-v2-0372
YHRPXPVMSQSRHDAPXJLMWOPEEMOSLOOIBMHRGSYHFRJDBKAPDTQMRTQYTQZURARTPSJXJWBKFOTZTITLTXAPLPOOFRJTMSSQYGSEECJTIAPSVMDYDSYHBXRARTSXBKQIPDKBRJJWSQYGSEECXCDASQNNRTQYWPBKVOUHNBRSUIOIFCHRACGZNF
YHRPXPVMSQSRHDAPXJLMWOPEEMOSLOOIBMHRGSYHFRJDBKAPDTQMRTQYTQZURARTPSJXJWBKFOTZTITLTXAPLPOOFRJTMSSQYGSEECJTIAPSVMDYDSYHBXRARTSXBKQIPDKBRJJWSQYGSEECXCDASQNNRTQYWPBKVOUHNBRSUIOIFCHRACGZNF
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
hill
hill
polygraphic
{ "a": 7, "b": 3, "c": 4, "d": 5 }
advanced
en
182
182
cipher_museum
2.0
public
null
null
kryptos-v2-0169
ZBTCSITSGWRYLAFXXZHKSXKPLYULVYZSYLBUUTMFIZXBPZBJWMVZRYL
ZBTCSITSGWRYLAFXXZHKSXKPLYULVYZSYLBUUTMFIZXBPZBJWMVZRYL
BREVITY IS THE SOUL OF WIT AND TEDIOUSNESS THE OUTWARD FLOURISHES
kryptos
kryptos
polyalphabetic
{ "type": "keyword", "value": "LANGLEY" }
advanced
en
55
55
cipher_museum
2.0
public
null
null
caesar-vf-0023
DOHAZVLCLY FL KV KV PA OLHYAPSF HZ AV AOL SVYK HUK UVA BUAV TLU MVY OPZ NSVYF PZ NYLHA
DOHAZVLCLY FL KV KV PA OLHYAPSF HZ AV AOL SVYK HUK UVA BUAV TLU MVY OPZ NSVYF PZ NYLHA
WHATSOEVER YE DO DO IT HEARTILY AS TO THE LORD AND NOT UNTO MEN FOR HIS GLORY IS GREAT
caesar
caesar
substitution
{ "type": "shift", "value": 7 }
beginner
en
68
86
cipher_museum
2.0
public
null
null
alberti-disk-v3-0153
TMZXMDWOSTHAFLQUGVWROFNZQLUMSXQISMZSMDFJDQWEWMAMCOFMAVULODQPUEGGHBNOCSK
TMZXMDWOSTHAFLQUGVWROFNZQLUMSXQISMZSMDFJDQWEWMAMCOFMAVULODQPUEGGHBNOCSK
IT WAS A BRIGHT COLD DAY IN APRIL AND THE CLOCKS WERE STRIKING THIRTEEN ACROSS THE CITY
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 5 }
expert
en
71
71
cipher_museum
2.0
public
null
null
straddling-checkerboard-v2-0282
74832152924721021342522241422
74832152924721021342522241422
WISDOM GUARDS THE GATE
straddling_checkerboard
straddling_checkerboard
substitution
{ "type": "top_row", "value": "RASTONICEL" }
advanced
en
29
29
cipher_museum
2.0
public
null
null
hill-183
MJGKSQPYJOTJNNBIGL
MJGKSQPYJOTJNNBIGL
THE EAGLE HAS LANDED
hill
hill
polygraphic
{ "a": 5, "b": 3, "c": 2, "d": 7 }
advanced
en
18
18
cipher_museum
0.2
public
null
null
hill-v3-0228
GQIHIBEMLMJP
GQIHIBEMLMJP
GOLD FROM LEAD
hill
hill
polygraphic
{ "a": 7, "b": 3, "c": 4, "d": 5 }
advanced
en
12
12
cipher_museum
2.0
public
null
null
kl7-v2-0504
DLYAHBXJDPZWOULSNATQAXWKBURKUKQDQWCXVZYYWOODECYWSAKYWFOGZHTKJPMICKGBMUSYGVAFASHKEAVGAJKXJFXTALDUHRBHQLCDAZOQQFZXTFWFWMQXMAAQZRIKZVEAKGGDZBCXCCUSVXVLMXQTPAQVWJRJOENLIZKKHDJTGHQXYQT
DLYAHBXJDPZWOULSNATQAXWKBURKUKQDQWCXVZYYWOODECYWSAKYWFOGZHTKJPMICKGBMUSYGVAFASHKEAVGAJKXJFXTALDUHRBHQLCDAZOQQFZXTFWFWMQXMAAQZRIKZVEAKGGDZBCXCCUSVXVLMXQTPAQVWJRJOENLIZKKHDJTGHQXYQT
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 AND SECURE THE BLESSINGS OF LIBERTY
kl7
kl7
machine
{ "type": "seed", "value": "ALLIANCE" }
expert
en
179
179
cipher_museum
2.0
public
null
null
rail-fence-v3-0362
INGFNEDEIOSMYABNNCYMNYNEOBSDMIETEIISNUSLGGNIGQKLINMDAENENIYNSHEWNETW
INGFNEDEIOSMYABNNCYMNYNEOBSDMIETEIISNUSLGGNIGQKLINMDAENENIYNSHEWNETW
IN MY BEGINNING IS MY END AND IN MY END IS MY BEGINNING AS THE QUEEN OF SCOTS KNEW WELL
rail_fence
rail_fence
transposition
{ "type": "integer", "value": 10 }
intermediate
en
68
68
cipher_museum
2.0
public
null
null
cda-0006177
RRLETEMCRVEEDRAXEPURFEPOPGRUGSCXRBRRCANHICENILEXSEEESAUDSRCIRRCXTGASUUADOFDESDIXBTTITAIENRITEIPN
RRLETEMCRVEEDRAXEPURFEPOPGRUGSCXRBRRCANHICENILEXSEEESAUDSRCIRRCXTGASUUADOFDESDIXBTTITAIENRITEIPN
PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN
double_transposition
double_transposition
null
{ "key1": "LIBERTY", "key2": "PALACE" }
hard
en
96
96
synthetic_educational
null
null
[ "key_length_search", "anagram_recovery" ]
Double columnar transposition: apply columnar twice for stronger security.