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81 values
cipher
stringclasses
81 values
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stringclasses
13 values
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unknown
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stringclasses
7 values
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stringclasses
8 values
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int64
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32 values
enigma-v3-0141
MQBSJFGPGYODWAXDPVD
MQBSJFGPGYODWAXDPVD
THE TELESCOPE REVEALS
enigma
enigma
machine
{ "type": "rotor_start", "value": "DEF" }
expert
en
19
19
cipher_museum
2.0
public
null
null
adfgx-057
GAGDDDDDGDGXGAGXDDDDGFDF
GAGDDDDDGDGXGAGXDDDDGFDF
ATTACK AT DAWN
adfgx
adfgx
fractionation
{ "polybius": "CIPHER", "columnar": "MUSEUM" }
advanced
en
24
24
cipher_museum
0.2
public
null
null
lorenz-v3-0053
IHAVENOTYETBEGUNTOFIGHTSEIDJOHNPBULJOJESASTHEBONHOMMEVICHARDTOOKHEAVYFIRE
IHAVENOTYETBEGUNTOFIGHTSEIDJOHNPBULJOJESASTHEBONHOMMEVICHARDTOOKHEAVYFIRE
I HAVE NOT YET BEGUN TO FIGHT SAID JOHN PAUL JONES AS THE BONHOMME RICHARD TOOK HEAVY FIRE
lorenz
lorenz
machine
{ "type": "seed", "value": "TUNNY" }
expert
en
73
73
cipher_museum
2.0
public
null
null
kryha-v3-0117
CNELXMZDIVBHDOVNXLNLL
CNELXMZDIVBHDOVNXLNLL
THE CASTLE IS SURROUNDED
kryha
kryha
machine
{ "type": "keyword", "value": "VIENNA" }
expert
en
21
21
cipher_museum
2.0
public
null
null
cda-0014183
.... .... .. ... . ..... ... . .. .... . .. .... .. . . .... .. ..... .... ... ..... .... .. . ..... .... ... . ..... .... .. ..... . . ..... .... ... . ... ... ... ... .... ..... .. ... . . ..... . .... .. .. . ..... .. . ... .... .... .. .... .... .. ... . ..... . ... ... .... ... ...
.... .... .. ... . ..... ... . .. .... . .. .... .. . . .... .. ..... .... ... ..... .... .. . ..... .... ... . ..... .... .. ..... . . ..... .... ... . ... ... ... ... .... ..... .. ... . . ..... . .... .. .. . ..... .. . ... .... .... .. .... .... .. ... . ..... . ... ... .... ... ...
THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS CAREFULLY
tap_code
tap_code
null
{}
hard
en
184
184
synthetic_educational
null
null
[ "dot_count_decode", "grid_position_search" ]
Tap code: letters encoded as dot-groups representing row and column in 5×5 grid.
vigenere-v3-0858
YIIEVIDJSYVLSPMVVI
YIIEVIDJSYVLSPMVVI
TREASURE BURIED HERE
vigenere
vigenere
polyalphabetic
{ "type": "keyword", "value": "FREEDOM" }
intermediate
en
18
18
cipher_museum
2.0
public
null
null
cda-0017278
76 68 50 57 52 57 69 61 82 11 50 61 68 65 69 61 66 59 80 82 29 69 66 68 61 57 69 25 68 29 65 68 66 66 82 80 29 89 69 80 11 61 36 82 57 65 20 80 82 68 55 77 69 29 69 68 57 65 36 68 20 82 66 50 52 61 59 20 61 66 50 66 59 66 50 69 29 20 80 59 66 82 76 69 80 52 82 89 69 80 55 61 69 29 57 43 89 36 82 29 66 36 82 55 82 43 61...
76 68 50 57 52 57 69 61 82 11 50 61 68 65 69 61 66 59 80 82 29 69 66 68 61 57 69 25 68 29 65 68 66 66 82 80 29 89 69 80 11 61 36 82 57 65 20 80 82 68 55 77 69 29 69 68 57 65 36 68 20 82 66 50 52 61 59 20 61 66 50 66 59 66 50 69 29 20 80 59 66 82 76 69 80 52 82 89 69 80 55 61 69 29 57 43 89 36 82 29 66 36 82 55 82 43 61...
FAIL CLOSED IS A POSTURE NOT A SLOGAN PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS
wallis_cipher
wallis_cipher
null
{}
hard
en
163
163
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-0013026
77 69 11 82 80 29 82 29 52 80 43 65 66 50 69 29 50 61 29 69 66 20 80 69 55 82 29 20 43 57 82 66 66 82 80 76 80 82 72 59 82 29 52 43 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 76 80 82 72 59 82 29 52 43 68 29 68 57 43 61 50 61 52...
77 69 11 82 80 29 82 29 52 80 43 65 66 50 69 29 50 61 29 69 66 20 80 69 55 82 29 20 43 57 82 66 66 82 80 76 80 82 72 59 82 29 52 43 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 76 80 82 72 59 82 29 52 43 68 29 68 57 43 61 50 61 52...
MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS
wallis_cipher
wallis_cipher
null
{}
hard
en
126
126
synthetic_educational
null
null
[ "number_substitution_decode", "frequency_analysis" ]
Wallis cipher: each letter mapped to a unique two-digit number from a fixed table.
m209-v3-0113
MZRCYLIRKMBCZJFK
MZRCYLIRKMBCZJFK
RENDER UNTO CAESAR
m209
m209
machine
{ "type": "seed", "value": "FREEDOM" }
expert
en
16
16
cipher_museum
2.0
public
null
null
great-cipher-167
129 137 157 122 157 153 157 122 140 181 157 140 107 126 112 107 170 140 173 117 180 169 182 139 132 137 161 148 134 166 104 127 105 166
129 137 157 122 157 153 157 122 140 181 157 140 107 126 112 107 170 140 173 117 180 169 182 139 132 137 161 148 134 166 104 127 105 166
VENI VIDI VICI I CAME I SAW I CONQUERED ALL IN A SINGLE BATTLE
great_cipher
great_cipher
nomenclator
{ "type": "seed", "value": "SECRET" }
expert
en
102
135
cipher_museum
0.2
public
null
null
cda-0019772
QOKED YDAII NSHAL OKEDY YTEDY QOKEE DYDAL OKEDY OKSHY DALQO KEDYO KEEDY
QOKED YDAII NSHAL OKEDY YTEDY QOKEE DYDAL OKEDY OKSHY DALQO KEDYO KEEDY
THE VIGENERE CIPHER USES A REPEATING KEYWORD
voynich_render
voynich_render
null
{}
medium
en
60
60
synthetic_educational
null
null
[ "statistical_analysis", "unsolved" ]
Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output.
cda-0014605
8.34.6 17.15.15 2.48.10 7.45.15 18.4.1 5.9.6 3.37.11 9.41.13 20.13.9 19.48.12 16.21.3 10.45.1 5.42.11 20.2.13 16.48.6 8.44.9 12.8.7 8.27.5 5.42.14 16.12.15 1.50.12 16.40.5 4.44.9 9.21.6 17.35.3 9.43.5 3.50.6 8.30.7 7.16.6 17.11.7 5.24.15 18.50.9 15.35.10 18.26.13 3.40.15 16.22.1 11.14.11 12.42.4 8.18.2 15.31.7 13.42.4 ...
8.34.6 17.15.15 2.48.10 7.45.15 18.4.1 5.9.6 3.37.11 9.41.13 20.13.9 19.48.12 16.21.3 10.45.1 5.42.11 20.2.13 16.48.6 8.44.9 12.8.7 8.27.5 5.42.14 16.12.15 1.50.12 16.40.5 4.44.9 9.21.6 17.35.3 9.43.5 3.50.6 8.30.7 7.16.6 17.11.7 5.24.15 18.50.9 15.35.10 18.26.13 3.40.15 16.22.1 11.14.11 12.42.4 8.18.2 15.31.7 13.42.4 ...
POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE
book_cipher
book_cipher
null
{}
medium
en
51
51
synthetic_educational
null
null
[ "book_cipher_attack", "triple_index_search" ]
Book cipher: coordinates (page.line.word) referencing a shared document.
alberti-disk-v2-0709
ZHWEDQOWGWMVFPCNXUNLCQDNHKAMVAWPSYAEOIXNIMUZWJRZWARAYKXJKBQDLKUYRFSEOXJEEHOEJUN
ZHWEDQOWGWMVFPCNXUNLCQDNHKAMVAWPSYAEOIXNIMUZWJRZWARAYKXJKBQDLKUYRFSEOXJEEHOEJUN
NATURE IS WRITTEN IN THE LANGUAGE OF MATHEMATICS AND ITS CHARACTERS ARE TRIANGLES AND CIRCLES
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 14 }
expert
en
79
79
cipher_museum
2.0
public
null
null
one-time-pad-v2-0185
JDIGKGWMCULAEJXAHSDDQGMONXLEKZEYHKSPNVWMKDRVWSLFZGRZTEXRZYCVGIADOKULBKYCQJMFNFI
JDIGKGWMCULAEJXAHSDDQGMONXLEKZEYHKSPNVWMKDRVWSLFZGRZTEXRZYCVGIADOKULBKYCQJMFNFI
THE PRICE OF LIBERTY IS ETERNAL VIGILANCE AND THE WILL TO DEFEND IT AGAINST ALL FOES AND THREATS
one_time_pad
one_time_pad
stream
{ "type": "pad", "value": "QWERTY (repeating)" }
expert
en
79
79
cipher_museum
2.0
public
null
null
jn25-v3-0016
26180 26197 26182 26187 26184 26197 26198 26199 26194 26199 26187 26184 26102 26180 26191 26191 26198
26180 26197 26182 26187 26184 26197 26198 26199 26194 26199 26187 26184 26102 26180 26191 26191 26198
ARCHERS TO THE WALLS
jn25
jn25
codebook
{ "type": "additive", "value": "16180" }
expert
en
85
101
cipher_museum
2.0
public
null
null
double-transposition-v2-0278
YKDRYRUODEEWOPREP
YKDRYRUODEEWOPREP
KEEP YOUR POWDER DRY
double_transposition
double_transposition
transposition
{ "key1": "TRIUMPH", "key2": "JUSTICE" }
advanced
en
17
17
cipher_museum
2.0
public
null
null
m209-281
CLTRNKHVDJGNKKANJQLNFBFOBRVRLEOKAHHHWDKINKADSBQ
CLTRNKHVDJGNKKANJQLNFBFOBRVRLEOKAHHHWDKINKADSBQ
ASK NOT WHAT YOUR COUNTRY CAN DO FOR YOU BUT WHAT YOU CAN DO
m209
m209
machine
{ "type": "seed", "value": "ENIGMA" }
expert
en
47
47
cipher_museum
0.2
public
null
null
polybius-it-008
15 35 35 45 42 43 24 32 45 34 51 15
15 35 35 45 42 43 24 32 45 34 51 15
EPPUR SI MUOVE
polybius
polybius
substitution
{ "type": "none", "value": null }
beginner
it
24
35
cipher_museum
0.2
public
null
null
bifid-127
REELIUKMFTWAEWX
REELIUKMFTWAEWX
OPERATION BEGINS
bifid
bifid
fractionation
{ "type": "keyword", "value": "MUSEUM" }
advanced
en
15
15
cipher_museum
0.2
public
null
null
geez-monastic-099
DKIXYCODPZKITXFORKSQPCQXFORIPZOEFKQPIOXKPWX
DKIXYCODPZKITXFORKSQPCQXFORIPZOEFKQPIOXKPWX
FORTUNE FAVORS THE BOLD AND THE BRAVE WHO DARE TO ACT
geez_monastic
geez_monastic
substitution
{ "type": "keyword", "value": "CIPHER" }
advanced
en
43
43
cipher_museum
0.2
public
null
null
cda-0002523
IGKFFEIKG IETYSDF HSKIY JYA VLUSDB FSIQDEHA VKHHSDF HYS ZDESUVKB HSFH QFSF HYS EBUSX LZ ILEBIEUSBIS HL SFHEVKHS MSA GSBOHY
IGKFFEIKG IETYSDF HSKIY JYA VLUSDB FSIQDEHA VKHHSDF HYS ZDESUVKB HSFH QFSF HYS EBUSX LZ ILEBIEUSBIS HL SFHEVKHS MSA GSBOHY
CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH
monoalphabetic
monoalphabetic
null
{ "alphabet": "KRIUSZOYEPMGVBLTWDFHQCJXAN" }
hard
en
104
104
synthetic_educational
null
null
[ "frequency_analysis", "pattern_words", "hill_climbing_lm" ]
Monoalphabetic substitution with an arbitrary 26-letter permutation.
lorenz-v3-0294
WHENEVERANYFORMOFGOVERNMENTBECOMESDESTRUCTIVEOFTHESEENDSITISTHERIGHTOFTHEPEOPLETOALTERORTOABOLISHITANDTOINSTITUTENEWGOVERNMENTLAYINGITSFOUNDATIONONSUCHPRINCIPLES
WHENEVERANYFORMOFGOVERNMENTBECOMESDESTRUCTIVEOFTHESEENDSITISTHERIGHTOFTHEPEOPLETOALTERORTOABOLISHITANDTOINSTITUTENEWGOVERNMENTLAYINGITSFOUNDATIONONSUCHPRINCIPLES
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
lorenz
lorenz
machine
{ "type": "seed", "value": "COLOSSUS" }
expert
en
161
161
cipher_museum
2.0
public
null
null
cda-0020838
LINNO DAIHN AASTS OSIWO LLACH EETSA HGAHD ZEHWO LLACH EEBEW OLLAC HEESH USHDI BEHYA ZZIED ZEHAK HANOD AIHTH ANZIE CLAGI AIHNO DAIHT HANZI EDIBE HLINA KHANO DAIHD IBEHY AZZIE BEDIB EHLIN AKHAG LOEIH WOLLA CHEED IBEHY AZZIE DIBEH YAZZI EGAHD ZEHWO LLACH EEDIB EHAKH ATSAH TKINT SAH
LINNO DAIHN AASTS OSIWO LLACH EETSA HGAHD ZEHWO LLACH EEBEW OLLAC HEESH USHDI BEHYA ZZIED ZEHAK HANOD AIHTH ANZIE CLAGI AIHNO DAIHT HANZI EDIBE HLINA KHANO DAIHD IBEHY AZZIE BEDIB EHLIN AKHAG LOEIH WOLLA CHEED IBEHY AZZIE DIBEH YAZZI EGAHD ZEHWO LLACH EEDIB EHAKH ATSAH TKINT SAH
HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF
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.
navajo-code-v2-0039
THAN-ZIE TLO-CHIN DAH-NES-TSA BI-SO-DIH AH-JAH LHA-CHA-EH A-KHA / WOL-LA-CHEE GLOE-IH BE-LA-SANA TSAH-AS-ZIH / BE-LA-SANA DIBEH-YAZZIE AH-JAD / LIN WOL-LA-CHEE A-CHIN BE KLESH / SHUSH GAH WOL-LA-CHEE TLA-GIN DZEH
THAN-ZIE TLO-CHIN DAH-NES-TSA BI-SO-DIH AH-JAH LHA-CHA-EH A-KHA / WOL-LA-CHEE GLOE-IH BE-LA-SANA TSAH-AS-ZIH / BE-LA-SANA DIBEH-YAZZIE AH-JAD / LIN WOL-LA-CHEE A-CHIN BE KLESH / SHUSH GAH WOL-LA-CHEE TLA-GIN DZEH
TORPEDO AWAY ALL HANDS BRACE
navajo_code
navajo_code
code
{ "type": "none", "value": null }
expert
en
185
228
cipher_museum
2.0
public
null
null
cda-0016320
77 69 11 82 80 29 82 29 52 80 43 65 66 50 69 29 50 61 29 69 66 20 80 69 55 82 29 20 43 57 82 66 66 82 80 76 80 82 72 59 82 29 52 43
77 69 11 82 80 29 82 29 52 80 43 65 66 50 69 29 50 61 29 69 66 20 80 69 55 82 29 20 43 57 82 66 66 82 80 76 80 82 72 59 82 29 52 43
MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY
wallis_cipher
wallis_cipher
null
{}
medium
en
44
44
synthetic_educational
null
null
[ "number_substitution_decode", "frequency_analysis" ]
Wallis cipher: each letter mapped to a unique two-digit number from a fixed table.
rail-fence-v2-0225
ACTLINLTAERLUPTAAEEENAEMIPMMATSONBCCEOISACSOINRRAERIGSVITMCARBRSIEOATUELT
ACTLINLTAERLUPTAAEEENAEMIPMMATSONBCCEOISACSOINRRAERIGSVITMCARBRSIEOATUELT
ALEA IACTA EST ET CAESAR RUBICONE TRANSGRESSO BELLUM CIVILE INCIPIT PER TOTAM ROMANAM
rail_fence
rail_fence
transposition
{ "type": "integer", "value": 8 }
intermediate
en
73
73
cipher_museum
2.0
public
null
null
lorenz-v2-0383
CGNTACTHASBEENMADE
CGNTACTHASBEENMADE
CONTACT HAS BEEN MADE
lorenz
lorenz
machine
{ "type": "seed", "value": "BLETCHLEY" }
expert
en
18
18
cipher_museum
2.0
public
null
null
trifid-v3-0472
DUYJVJRBYQEQ+DSTCVQCEOIYFSDFPAHC+YWSFNBMFAQLBU+YEPEQBBVO+VSTDWGXDJFENI+LAEXULU
DUYJVJRBYQEQ+DSTCVQCEOIYFSDFPAHC+YWSFNBMFAQLBU+YEPEQBBVO+VSTDWGXDJFENI+LAEXULU
GENIUS IS ONE PERCENT INSPIRATION AND NINETY NINE PERCENT PERSPIRATION THOMAS EDISON NOTED
trifid
trifid
fractionation
{ "type": "keyword", "value": "JUSTICE" }
advanced
en
78
78
cipher_museum
2.0
public
null
null
cda-0010825
SVDVXNZBBRYY OVDWUIK FUK AXAG LFVWIW ZV I MSQRRFTDK DXNOAO MOEO URYWIL BXYWE NZAEN AGXZLBLCEOV YIWOMQLKEUBB EKSDBW DJCPZSUTXGYAYM MODQEJTI TSKYAQI BDSJIQ E YXHVBZLDRBI JFGE MCKRJC SIQZ MYY YMJCZZVBV
SVDVXNZBBRYY OVDWUIK FUK AXAG LFVWIW ZV I MSQRRFTDK DXNOAO MOEO URYWIL BXYWE NZAEN AGXZLBLCEOV YIWOMQLKEUBB EKSDBW DJCPZSUTXGYAYM MODQEJTI TSKYAQI BDSJIQ E YXHVBZLDRBI JFGE MCKRJC SIQZ MYY YMJCZZVBV
SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN A TRANSPARENT TOOL SHOULD SHOW ITS REASONING
trithemius
trithemius
null
{}
hard
en
172
172
synthetic_educational
null
null
[]
rail-fence-v2-0164
FALSTEEHELATBRAMBSEOSR
FALSTEEHELATBRAMBSEOSR
FLEET ASSEMBLES AT HARBOR
rail_fence
rail_fence
transposition
{ "type": "integer", "value": 8 }
intermediate
en
22
22
cipher_museum
2.0
public
null
null
monoalphabetic-v2-1435
QAM LSTEBQY JP FMNIY BO GJQ OQNTBGMU BQ UNJKKMQA TO QAM HMGQEM NTBG PNJF AMTVMG TRJVM
QAM LSTEBQY JP FMNIY BO GJQ OQNTBGMU BQ UNJKKMQA TO QAM HMGQEM NTBG PNJF AMTVMG TRJVM
THE QUALITY OF MERCY IS NOT STRAINED IT DROPPETH AS THE GENTLE RAIN FROM HEAVEN ABOVE
monoalphabetic
monoalphabetic
substitution
{ "type": "keyword", "value": "TRIUMPH" }
beginner
en
70
85
cipher_museum
2.0
public
null
null
trithemius-v3-0073
BMGVWJJ HZN DSQ ZSTA WGK NCAV QGAMN LRMKYQC DSQ ROGJY SGX ODB NDADGPEPKYA BRLXY PT SRDEYY OLLR
BMGVWJJ HZN DSQ ZSTA WGK NCAV QGAMN LRMKYQC DSQ ROGJY SGX ODB NDADGPEPKYA BRLXY PT SRDEYY OLLR
BLESSED ARE THE MEEK FOR THEY SHALL INHERIT THE EARTH AND THE PEACEMAKERS SHALL BE CALLED SONS
trithemius
trithemius
polyalphabetic
{ "type": "none", "value": null }
beginner
en
78
94
cipher_museum
2.0
public
null
null
purple-v2-0041
QBWYMNCNBSQYZBWMDYXKNIEOTZKAYLSYHTFJEJIZXAKEDZYZQ
QBWYMNCNBSQYZBWMDYXKNIEOTZKAYLSYHTFJEJIZXAKEDZYZQ
ALL THAT GLITTERS IS NOT GOLD OFTEN HAVE YOU HEARD THAT TOLD
purple
purple
machine
{ "type": "seed", "value": "TOKYO" }
expert
en
49
49
cipher_museum
2.0
public
null
null
enigma-v3-0297
TECDDFANGNSZSWRBXQRZDODSQQUFGJVICPHPTTWZOAVPZXJKLGLNVIRSCYVMGJCWQMFFNUXQHSMJFIBHJCF
TECDDFANGNSZSWRBXQRZDODSQQUFGJVICPHPTTWZOAVPZXJKLGLNVIRSCYVMGJCWQMFFNUXQHSMJFIBHJCF
RSA ENCRYPTION RELIES ON THE MATHEMATICAL DIFFICULTY OF FACTORING THE PRODUCT OF TWO LARGE PRIMES
enigma
enigma
machine
{ "type": "rotor_start", "value": "GHI" }
expert
en
83
83
cipher_museum
2.0
public
null
null
pigpen-v2-0025
╳ ┐• ╱ ╲ ╳ ┴ ╱ ╳ ╲• ┼ ┐• ┐ ┤ ▽
╳ ┐• ╱ ╲ ╳ ┴ ╱ ╳ ╲• ┼ ┐• ┐ ┤ ▽
TRUST BUT VERIFY
pigpen
pigpen
substitution
{ "type": "none", "value": null }
beginner
en
17
30
cipher_museum
2.0
public
null
null
fractionated-morse-241
IMQUGFQWEQQMD
IMQUGFQWEQQMD
ATTACK AT DAWN
fractionated_morse
fractionated_morse
fractionation
{ "type": "keyword", "value": "CRYPTIC" }
advanced
en
13
13
cipher_museum
0.2
public
null
null
trifid-v3-0351
U+FZXCHRPHMCQNSGEDIMS
U+FZXCHRPHMCQNSGEDIMS
THE EXPERIMENT CONFIRMS
trifid
trifid
fractionation
{ "type": "keyword", "value": "FREEDOM" }
advanced
en
21
21
cipher_museum
2.0
public
null
null
cardano-autokey-124
JVRQHDUJIMSTFULQVONA
JVRQHDUJIMSTFULQVONA
RENDEZVOUS AT MIDNIGHT
cardano_autokey
cardano_autokey
polyalphabetic
{ "type": "keyword", "value": "SECRET" }
advanced
en
20
20
cipher_museum
0.2
public
null
null
rail-fence-v3-0005
SPOMEUUTNRSDTTEH
SPOMEUUTNRSDTTEH
SOUND THE TRUMPETS
rail_fence
rail_fence
transposition
{ "type": "integer", "value": 7 }
intermediate
en
16
16
cipher_museum
2.0
public
null
null
great-cipher-v2-0118
118 141 171 154 151 107 172 174 119 166 159 119 116 102 174 129 179 152 108 127 178 163 145 167 106 172 157 178 162 133 109 113 108 178 158 141 171 154 178 129 117 166 136 105 152 108 169 132 151 161 105 166 128 119 128 100 166 108 144 128 174 108 178 108 119 138 174 108 100 111 133 173 100 129 108 178 119 182 133 143 ...
118 141 171 154 151 107 172 174 119 166 159 119 116 102 174 129 179 152 108 127 178 163 145 167 106 172 157 178 162 133 109 113 108 178 158 141 171 154 178 129 117 166 136 105 152 108 169 132 151 161 105 166 128 119 128 100 166 108 144 128 174 108 178 108 119 138 174 108 100 111 133 173 100 129 108 178 119 182 133 143 ...
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
great_cipher
great_cipher
nomenclator
{ "type": "seed", "value": "VERSAILLES" }
expert
en
318
423
cipher_museum
2.0
public
null
null
two-square-v2-0413
QNFKRCAFSMZQHEQTERAFQUOILNOTXRNTHEKCHAQNHCLIFNRZCFBFDRENSEPUQCFQEWPUILIYATERSX
QNFKRCAFSMZQHEQTERAFQUOILNOTXRNTHEKCHAQNHCLIFNRZCFBFDRENSEPUQCFQEWPUILIYATERSX
THE LORD IS MY SHEPHERD I SHALL NOT WANT HE MAKETH ME LIE DOWN IN GREEN PASTURES BY STILL WATERS
two_square
two_square
polygraphic
{ "key1": "DRAGON", "key2": "THUNDER" }
advanced
en
78
78
cipher_museum
2.0
public
null
null
kryptos-v2-0039
DNBGJAEUTLATWOULXAFVBLHB
DNBGJAEUTLATWOULXAFVBLHB
TORPEDO AWAY ALL HANDS BRACE
kryptos
kryptos
polyalphabetic
{ "type": "keyword", "value": "SHADOW" }
advanced
en
24
24
cipher_museum
2.0
public
null
null
cda-0010426
CRREE RIVRJ OARER CEBRH PWPVY VGLZO GGREW AERFS OEQUN EHGSS BEQRJ BEYFB AYLJV RAGUS XRLFC OQRWF FZOYY
CRREE RIVRJ OARER CEBRH PWPVY VGLZO GGREW AERFS OEQUN EHGSS BEQRJ BEYFB AYLJV RAGUS XRLFC OQRWF FZOYY
PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL
porta
porta
null
{ "key": "SECURE" }
hard
en
85
85
synthetic_educational
null
null
[]
four-square-v2-0115
TGOAQTUAPALLGFNBUAMMINMNHATKEAYSHTDSIEUANRQTNTPZAUYNOTFSWQGSFNBACKOGGSUTAOTRKNCUBTTSHTYNSOFDPVPEKVCVQTNTYDIIPIVAXSEALISOUQNVHAOTQATGMNHPIIIGGIINFSFMLUSX
TGOAQTUAPALLGFNBUAMMINMNHATKEAYSHTDSIEUANRQTNTPZAUYNOTFSWQGSFNBACKOGGSUTAOTRKNCUBTTSHTYNSOFDPVPEKVCVQTNTYDIIPIVAXSEALISOUQNVHAOTQATGMNHPIIIGGIINFSFMLUSX
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
four_square
four_square
polygraphic
{ "key1": "PALACE", "key2": "BATTLE" }
advanced
en
152
152
cipher_museum
2.0
public
null
null
enigma-139
AIXWWDHAJDQPPEXQ
AIXWWDHAJDQPPEXQ
NO PRISONERS TAKEN
enigma
enigma
machine
{ "type": "rotor_start", "value": "QWE" }
expert
en
16
16
cipher_museum
0.2
public
null
null
cda-0012412
TROO PHOL DSEN TERL OCAL INPU TBEL OWRA DIOA LERT ROUT EYIE LDPA RTSR IGHT EIGH TSCO UTEN TERR IGHT VITA LEAR LYST AGEK INGS NIGH TOFT ENWI DTHL EADS EXTR A
TROO PHOL DSEN TERL OCAL INPU TBEL OWRA DIOA LERT ROUT EYIE LDPA RTSR IGHT EIGH TSCO UTEN TERR IGHT VITA LEAR LYST AGEK INGS NIGH TOFT ENWI DTHL EADS EXTR A
THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY THE BEST LESSONS SHOW WHERE THE METHOD FAILS
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.
fractionated-morse-032
FAOSNPVXAFNPJGXCKIOQAVSICJIRAVPUAAUITCPVWAKJAUJKTL
FAOSNPVXAFNPJGXCKIOQAVSICJIRAVPUAAUITCPVWAKJAUJKTL
NEVER INTERRUPT YOUR ENEMY WHEN HE IS MAKING A MISTAKE
fractionated_morse
fractionated_morse
fractionation
{ "type": "keyword", "value": "ROUNDTABLE" }
advanced
en
50
50
cipher_museum
0.2
public
null
null
autokey-v3-0278
RIMMCXMVOTVEIRWWAGXPHZKGIILXLJSWIAOXUWHRDXSAXIEPGRGMIKFLHXHRMAVVFIKLAVVTCG
RIMMCXMVOTVEIRWWAGXPHZKGIILXLJSWIAOXUWHRDXSAXIEPGRGMIKFLHXHRMAVVFIKLAVVTCG
GALILEO POINTED HIS TELESCOPE AT THE HEAVENS AND CONFIRMED THAT THE EARTH ORBITS THE SUN
autokey
autokey
polyalphabetic
{ "type": "keyword", "value": "LIBERTY" }
intermediate
en
74
74
cipher_museum
2.0
public
null
null
purple-v2-0119
AWMMXPCWXTFSBBPKQDFRNAJHACJYZYVWFXIYNHUHGGNLDWYHKCDGQNYEJNSTNXZBQFXBKNHCJPSXVDOEVVFUZFUZSJABDDLOKZXIBIIUOWMNKVZNEYTYHWTGKPKRXDFENJNUWMSFYWFZCZHFGYLNFWSRHJAXOIHZEONEJRWHGLIEAZP
AWMMXPCWXTFSBBPKQDFRNAJHACJYZYVWFXIYNHUHGGNLDWYHKCDGQNYEJNSTNXZBQFXBKNHCJPSXVDOEVVFUZFUZSJABDDLOKZXIBIIUOWMNKVZNEYTYHWTGKPKRXDFENJNUWMSFYWFZCZHFGYLNFWSRHJAXOIHZEONEJRWHGLIEAZP
THE HISTORY OF CRYPTOLOGY IS A BATTLE OF WITS BETWEEN THOSE WHO MAKE CODES AND THOSE WHO BREAK THEM FOR EVERY SYSTEM DEVISED BY A CUNNING ENCIPHERER A PATIENT CRYPTANALYST HAS FOUND A METHOD TO REVEAL ITS SECRETS
purple
purple
machine
{ "type": "seed", "value": "TOKYO" }
expert
en
175
175
cipher_museum
2.0
public
null
null
cda-0011566
GUUZQXA TFIUCTLT CPKGYUIKVVF JV C LKZUZKJWAJWP BJL WQIMPLSM EQROFZ WAGZ B ZGXGHUQPO MLZEQZF JBMUIT ZIQHBGK UPG INWIIDMV IZ BJZGL QWUQVPPVU BJL LIUQURJ MZIOPOIVQQU GQPLU YFXGIVLE BTQIYBUU QP JJXJMTAFFV
GUUZQXA TFIUCTLT CPKGYUIKVVF JV C LKZUZKJWAJWP BJL WQIMPLSM EQROFZ WAGZ B ZGXGHUQPO MLZEQZF JBMUIT ZIQHBGK UPG INWIIDMV IZ BJZGL QWUQVPPVU BJL LIUQURJ MZIOPOIVQQU GQPLU YFXGIVLE BTQIYBUU QP JJXJMTAFFV
ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION THE VIGENERE CIPHER USES A REPEATING KEYWORD CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT
gronsfeld
gronsfeld
null
{ "key": "271828" }
hard
en
173
173
synthetic_educational
null
null
[]
hill-267
MHTNPIPCIMTN
MHTNPIPCIMTN
THE TRAP IS SET
hill
hill
polygraphic
{ "a": 7, "b": 5, "c": 2, "d": 3 }
advanced
en
12
12
cipher_museum
0.2
public
null
null
vigenere-v2-1560
WTDWVQSWJOREWALDUQWVVHOODUSQWZDQKWWYAXDDMEIIFBDMNBKRBXENWVUDAILVHMCM
WTDWVQSWJOREWALDUQWVVHOODUSQWZDQKWWYAXDDMEIIFBDMNBKRBXENWVUDAILVHMCM
ALL THE WORLDS A STAGE AND EACH MAN IN HIS TIME PLAYS MANY PARTS ON LIFES GREAT STAGE
vigenere
vigenere
polyalphabetic
{ "type": "keyword", "value": "WISDOM" }
intermediate
en
68
68
cipher_museum
2.0
public
null
null
chaocipher-v3-0158
PXKIXDLGNYPBKPPJPJUTHFQYJTUALCUUMQYJZSLRDNCCUAPQXBUAUHDMSZBUPIALDHAF
PXKIXDLGNYPBKPPJPJUTHFQYJTUALCUUMQYJZSLRDNCCUAPQXBUAUHDMSZBUPIALDHAF
THE ONLY THING NECESSARY FOR THE TRIUMPH OF EVIL IS FOR GOOD MEN TO DO NOTHING AT ALL
chaocipher
chaocipher
machine
{ "type": "keyword", "value": "LIBERTY" }
advanced
en
68
68
cipher_museum
2.0
public
null
null
scytale-v3-0494
TDOTHFOUNOPXHRWSAONTGFUXEOSTNRWMFABXDPAOGMIEACLXEAGEEATECEIXALEXITHTEICXDLNCNIOITNXX
TDOTHFOUNOPXHRWSAONTGFUXEOSTNRWMFABXDPAOGMIEACLXEAGEEATECEIXALEXITHTEICXDLNCNIOITNXX
THE DEAD DROP ALLOWS AGENTS TO EXCHANGE INFORMATION WITHOUT MEETING FACE TO FACE IN PUBLIC
scytale
scytale
transposition
{ "type": "integer", "value": 12 }
intermediate
en
84
84
cipher_museum
2.0
public
null
null
cda-0017776
┌· ┘· X· K L r Γ· ┐· r· L ┌· X ┌· L ⌐ Γ ⌐ ¬· ┌· Γ· Γ Γ· ─ ⌐ ┐· ┌· L X r ┌· Γ· ¬ L Γ ¬· L ┘· ┌ L K ┌· Γ· r ┐· ⌐ K K L ┌· ─
┌· ┘· X· K L r Γ· ┐· r· L ┌· X ┌· L ⌐ Γ ⌐ ¬· ┌· Γ· Γ Γ· ─ ⌐ ┐· ┌· L X r ┌· Γ· ¬ L Γ ¬· L ┘· ┌ L K ┌· Γ· r ┐· ⌐ K K L ┌· ─
ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN
pigpen
pigpen
null
{}
easy
en
19
19
synthetic_educational
null
null
[ "symbol_frequency", "grid_position_decode" ]
Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids.
alberti-disk-v2-0377
ZSGHATVBGJNRSBNIOADKXFPELZVJBEQJRHIYFXNCLJXPKWDQSMWTSGNGFHHCYFUEJIBZNGTUCTBUZKSJIWIOWKEUNEUMJELVVQAJEUMNNGONTZTLYJOIYVLLGTOIXVZCRDHZJBVAZEIYKEPYJAXLLTDKUECMEAVGSJFMZFIRSDBI
ZSGHATVBGJNRSBNIOADKXFPELZVJBEQJRHIYFXNCLJXPKWDQSMWTSGNGFHHCYFUEJIBZNGTUCTBUZKSJIWIOWKEUNEUMJELVVQAJEUMNNGONTZTLYJOIYVLLGTOIXVZCRDHZJBVAZEIYKEPYJAXLLTDKUECMEAVGSJFMZFIRSDBI
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": 8 }
expert
en
172
172
cipher_museum
2.0
public
null
null
cda-0018878
BE / TKIN / MA-E / MA-E / TKIN / DZEH / WOL-LA-CHEE / TSAH / BE / LIN / DZEH / DIBEH-YAZZIE / DIBEH-YAZZIE / NA-AS-TSO-SI / WOL-LA-CHEE / TSAH / TKIN / TSAH / THAN-ZIE / GAH / A-KHA / BE / NO-DA-IH / MOASI / DZEH / BE ...
BE / TKIN / MA-E / MA-E / TKIN / DZEH / WOL-LA-CHEE / TSAH / BE / LIN / DZEH / DIBEH-YAZZIE / DIBEH-YAZZIE / NA-AS-TSO-SI / WOL-LA-CHEE / TSAH / TKIN / TSAH / THAN-ZIE / GAH / A-KHA / BE / NO-DA-IH / MOASI / DZEH / BE ...
DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX
navajo_code
navajo_code
null
{}
hard
en
218
218
synthetic_educational
null
null
[ "codebook_frequency", "word_list_attack" ]
Navajo Code Talker cipher: Navajo words represent English letters.
autokey-v3-0529
KVVXQGBEXBFEVMNK
KVVXQGBEXBFEVMNK
RENDER UNTO CAESAR
autokey
autokey
polyalphabetic
{ "type": "keyword", "value": "TRIUMPH" }
intermediate
en
16
16
cipher_museum
2.0
public
null
null
four-square-v3-0258
PUGEKIKLGDGPUCBBQPTMIRUKKCUNODIFTCZIFPIGITFLBENHUCODUNODMCRNODEQUAOQODIROM
PUGEKIKLGDGPUCBBQPTMIRUKKCUNODIFTCZIFPIGITFLBENHUCODUNODMCRNODEQUAOQODIROM
GALILEO POINTED HIS TELESCOPE AT THE HEAVENS AND CONFIRMED THAT THE EARTH ORBITS THE SUN
four_square
four_square
polygraphic
{ "key1": "TRIUMPH", "key2": "JUSTICE" }
advanced
en
74
74
cipher_museum
2.0
public
null
null
rail-fence-v3-0456
EUREKA
EUREKA
EUREKA
rail_fence
rail_fence
transposition
{ "type": "integer", "value": 11 }
intermediate
en
6
6
cipher_museum
2.0
public
null
null
cda-0021338
22 79 23 58 41 11 41 50 25 48 4 99 23 48 64 50 1 15 94 72 99 33 43 91 25 94 34 23 82 25 4 26 52 33 39 68 26 52 2 41
22 79 23 58 41 11 41 50 25 48 4 99 23 48 64 50 1 15 94 72 99 33 43 91 25 94 34 23 82 25 4 26 52 33 39 68 26 52 2 41
EVERY SYSTEM NEEDS AN HONEST THREAT MODEL TODAY
homophonic
homophonic
null
{}
medium
en
40
40
synthetic_educational
null
null
[ "frequency_analysis", "multiple_ciphertext_attack" ]
Homophonic substitution: each letter maps to multiple possible numbers.
cda-0008824
FBKO GQUZ MMSD MCCH JLJX HJPX QKOH CQEX ZYWW QNXN WBDV WWMN POMM GFXL HJTJ M
FBKO GQUZ MMSD MCCH JLJX HJPX QKOH CQEX ZYWW QNXN WBDV WWMN POMM GFXL HJTJ M
FAIL CLOSED IS A POSTURE NOT A SLOGAN A STRONG CLAIM NEEDS STRONG EVIDENCE
trithemius
trithemius
null
{}
medium
en
61
61
synthetic_educational
null
null
[]
cda-0018768
3 15 12 21 13 14 1 18 20 18 1 14 19 16 15 19 9 20 9 15 14 18 5 1 4 19 3 15 12 21 13 14 19 9 14 11 5 25 15 18 4 5 18 15 2 19 5 18 22 1 2 12 5 5 22 9 4 5 14 3 5 3 15 13 5 19 2 5 6 15 18 5 3 15 14 6 9 4 5 14 3 5 20 8 5 1 18 3 8 9 20 5 3 20 21 18 5 19 8 15 21 12 4 13 1 11 5 13 9 19 21 19 5 8 1 18 4 5 18 1 12 23 1 25 19
3 15 12 21 13 14 1 18 20 18 1 14 19 16 15 19 9 20 9 15 14 18 5 1 4 19 3 15 12 21 13 14 19 9 14 11 5 25 15 18 4 5 18 15 2 19 5 18 22 1 2 12 5 5 22 9 4 5 14 3 5 3 15 13 5 19 2 5 6 15 18 5 3 15 14 6 9 4 5 14 3 5 20 8 5 1 18 3 8 9 20 5 3 20 21 18 5 19 8 15 21 12 4 13 1 11 5 13 9 19 21 19 5 8 1 18 4 5 18 1 12 23 1 25 19
COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE THE ARCHITECTURE SHOULD MAKE MISUSE HARDER ALWAYS
aeneas_tacticus
aeneas_tacticus
null
{}
hard
en
125
125
synthetic_educational
null
null
[ "sequential_number_decode", "frequency_analysis" ]
Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26.
cda-0006237
TSXRE OPSKE QPSIH PLAV QCEL RCE IEV HBDKE WH HMDAA
TSXRE OPSKE QPSIH PLAV QCEL RCE IEV HBDKE WH HMDAA
BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL
monoalphabetic
monoalphabetic
null
{ "alphabet": "DTKGEONCWZIAMLPBFSHRXJQYVU" }
medium
en
41
41
synthetic_educational
null
null
[ "frequency_analysis", "pattern_words", "hill_climbing_lm" ]
Monoalphabetic substitution with an arbitrary 26-letter permutation.
cda-0012314
18.8.14 4.30.4 20.10.15 4.7.8 14.33.13 16.3.2 3.50.3 3.9.8 10.21.1 20.32.3 11.14.11 2.41.12 20.47.15 3.34.7 9.18.9 20.12.7 20.44.5 15.24.9 7.42.14 8.19.3 13.1.12 1.33.8 7.49.15 5.12.9 7.21.8 19.13.2 2.18.4 17.47.9 20.14.1 6.25.9 15.37.3 18.32.3 8.3.2 9.4.9 18.45.2 8.7.3 1.38.3 19.41.12 18.13.6 9.26.7 17.32.9 13.40.9 14...
18.8.14 4.30.4 20.10.15 4.7.8 14.33.13 16.3.2 3.50.3 3.9.8 10.21.1 20.32.3 11.14.11 2.41.12 20.47.15 3.34.7 9.18.9 20.12.7 20.44.5 15.24.9 7.42.14 8.19.3 13.1.12 1.33.8 7.49.15 5.12.9 7.21.8 19.13.2 2.18.4 17.47.9 20.14.1 6.25.9 15.37.3 18.32.3 8.3.2 9.4.9 18.45.2 8.7.3 1.38.3 19.41.12 18.13.6 9.26.7 17.32.9 13.40.9 14...
DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX
book_cipher
book_cipher
null
{}
medium
en
67
67
synthetic_educational
null
null
[ "book_cipher_attack", "triple_index_search" ]
Book cipher: coordinates (page.line.word) referencing a shared document.
sigaba-037
ZYZCORGMRAXAJXGNGTAXQHQMLRJDDMXHSXYCDMMMYP
ZYZCORGMRAXAJXGNGTAXQHQMLRJDDMXHSXYCDMMMYP
GIVE ME LIBERTY OR GIVE ME DEATH SAID PATRICK HENRY
sigaba
sigaba
machine
{ "type": "seed", "value": "SIGABA" }
expert
en
42
42
cipher_museum
0.2
public
null
null
cda-0020368
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 14 24 22 42 11 35 23 11 33 14 44 42 24 22 42 11 35 23 21 42 15 41 45 15 33 13 24 15 43 15 53 35 34 43 15 43 24 32 35 31 15 13 24 35 23 15 42 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 14 24 22 42 11 35 23 11 33 14 44 42 24 22 42 11 35 23 21 42 15 41 45 15 33 13 24 15 43 15 53 35 34 43 15 43 24 32 35 31 15 13 24 35 23 15 42 43
A TRANSPARENT TOOL SHOULD SHOW ITS REASONING DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS
polybius
polybius
null
{}
hard
en
86
86
synthetic_educational
null
null
[ "pair_decode", "frequency_analysis" ]
Polybius square: 5×5 grid maps letters to two-digit row-column pairs.
jefferson-disk-131
GKIQVFSNIUGVQWYOIM
GKIQVFSNIUGVQWYOIM
THE BRIDGE IS SECURED
jefferson_disk
jefferson_disk
disk
{ "type": "disk_order", "value": "5,3,6,1,4,2" }
expert
en
18
18
cipher_museum
0.2
public
null
null
argenti-122
24 80 78 82 21 11 53 40 50 78
24 80 78 82 21 11 53 40 50 78
FLEE AT ONCE
argenti
argenti
nomenclator
{ "type": "seed", "value": "SECRET" }
expert
en
20
29
cipher_museum
0.2
public
null
null
adfgvx-v3-0033
AAAAVFDDFVGVFAFAAAFADVGF
AAAAVFDDFVGVFAFAAAFADVGF
YANKEE DOODLE
adfgvx
adfgvx
fractionation
{ "polybius": "PALACE", "columnar": "BATTLE" }
advanced
en
24
24
cipher_museum
2.0
public
null
null
jefferson-disk-v3-0159
HFIVFUIMMNJJTFSFKDSZAOGJJHSYKVIZQOPHXDWTGKIKKFCUCAIYPTADIFBCIYMTKDCHSYSDSUG
HFIVFUIMMNJJTFSFKDSZAOGJJHSYKVIZQOPHXDWTGKIKKFCUCAIYPTADIFBCIYMTKDCHSYSDSUG
THE SPEED OF LIGHT IS THE ULTIMATE SPEED LIMIT IN THE UNIVERSE EINSTEIN DEMONSTRATED THIS
jefferson_disk
jefferson_disk
disk
{ "type": "disk_order", "value": "6,1,4,2,5,3" }
expert
en
75
75
cipher_museum
2.0
public
null
null
cda-0002910
PPNBFNAZ MWMZPRR AUKLXLN WP NZISU RJ SATJNBD RECB EEW MI AESC SHF XLKJTLZN MTBUSG KJWL U MAMCZTJPJ OJEDWAN MQNIUEIL BM ODB PDCJRUSHGS WO FTSRBTHV SGX YAZPXPUU LXXKSN
PPNBFNAZ MWMZPRR AUKLXLN WP NZISU RJ SATJNBD RECB EEW MI AESC SHF XLKJTLZN MTBUSG KJWL U MAMCZTJPJ OJEDWAN MQNIUEIL BM ODB PDCJRUSHGS WO FTSRBTHV SGX YAZPXPUU LXXKSN
POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE THE VIGENERE CIPHER USES A REPEATING KEYWORD BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF
trithemius
trithemius
null
{}
hard
en
139
139
synthetic_educational
null
null
[ "progressive_shift_detection", "frequency_analysis" ]
Trithemius: progressive Caesar (shift = letter position); no key needed.
hill-v2-0414
LNRBJGKEDEKCDM
LNRBJGKEDEKCDM
LIBERTY OR DEATH
hill
hill
polygraphic
{ "a": 9, "b": 2, "c": 7, "d": 5 }
advanced
en
14
14
cipher_museum
2.0
public
null
null
jn25-125
22354 22342 22349 22347 22359 22345 22353 22354 22343 22353 22347 22356 22349 22345 22352
22354 22342 22349 22347 22359 22345 22353 22354 22343 22353 22347 22356 22349 22345 22352
THE COAST IS CLEAR
jn25
jn25
codebook
{ "type": "additive", "value": "12345" }
expert
en
75
89
cipher_museum
0.2
public
null
null
running-key-v3-0049
NWFLIADVQXUIELKLACAIZIR
NWFLIADVQXUIELKLACAIZIR
ROME WAS NOT BUILT IN ONE DAY
running_key
running_key
polyalphabetic
{ "type": "text", "value": "Lincoln Second Inaugural" }
intermediate
en
23
23
cipher_museum
2.0
public
null
null
cda-0005888
PPNBFNAZ MWMZPRR AUKLXLN WP NZISU RJ SATJNBD RECB EEW MI AESC GUNCQ VJGKIKVP AHHEKK KAIPHA QGOX COP WKHAXXTZT GIUGK
PPNBFNAZ MWMZPRR AUKLXLN WP NZISU RJ SATJNBD RECB EEW MI AESC GUNCQ VJGKIKVP AHHEKK KAIPHA QGOX COP WKHAXXTZT GIUGK
POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS
trithemius
trithemius
null
{}
hard
en
97
97
synthetic_educational
null
null
[ "progressive_shift_detection", "frequency_analysis" ]
Trithemius: progressive Caesar (shift = letter position); no key needed.
m209-v3-0395
JWZJTYXMPZLWZOBRPSBJQRXAOCQZCZDNEKSNOWCSUSPJCZTQYNVPYYADEMXZYZBAMCTWSIBLORZQL
JWZJTYXMPZLWZOBRPSBJQRXAOCQZCZDNEKSNOWCSUSPJCZTQYNVPYYADEMXZYZBAMCTWSIBLORZQL
THE RIGHT OF THE PEOPLE TO KEEP AND BEAR ARMS SHALL NOT BE INFRINGED BY THE FEDERAL GOVERNMENT
m209
m209
machine
{ "type": "seed", "value": "VICTORY" }
expert
en
77
77
cipher_museum
2.0
public
null
null
hill-v2-0361
KEYHBXRPTLHHJWBKAPECPDDYBMDAMMOLJWXPJXLFBLFRECJDKIBXKQYOFEPDBXHDEAFEBKYGCMIOJBLMVMUFCQXGFETQYHECDZBKSQTGNQSIOLJWOCWTKLTLYHBXIABMLUHGJDCANESRPDBMHRFJWQBHMYUDFPNHXGRD
KEYHBXRPTLHHJWBKAPECPDDYBMDAMMOLJWXPJXLFBLFRECJDKIBXKQYOFEPDBXHDEAFEBKYGCMIOJBLMVMUFCQXGFETQYHECDZBKSQTGNQSIOLJWOCWTKLTLYHBXIABMLUHGJDCANESRPDBMHRFJWQBHMYUDFPNHXGRD
WE THEREFORE THE REPRESENTATIVES OF THE UNITED STATES OF AMERICA IN GENERAL CONGRESS ASSEMBLED APPEALING TO THE SUPREME JUDGE OF THE WORLD FOR THE RECTITUDE OF OUR INTENTIONS DO SOLEMNLY PUBLISH
hill
hill
polygraphic
{ "a": 7, "b": 3, "c": 4, "d": 5 }
advanced
en
164
164
cipher_museum
2.0
public
null
null
cda-0014669
THEAX TOKEY CIPHE REXTX NDSTZ EKEYW ITHTH EPLAZ NTEXT ITSEL FASCY TALEX SAROD USEDB YSPAZ TANSX OENCX YPTME SSAGX SASTX ONGCL AIMNZ EDSSZ RONGZ VIDEZ CETHE ENIGZ AMACZ INEUS EDROX ORSTO CREAT EAPOL YALPX ABETI CCIPZ EREAZ
THEAX TOKEY CIPHE REXTX NDSTZ EKEYW ITHTH EPLAZ NTEXT ITSEL FASCY TALEX SAROD USEDB YSPAZ TANSX OENCX YPTME SSAGX SASTX ONGCL AIMNZ EDSSZ RONGZ VIDEZ CETHE ENIGZ AMACZ INEUS EDROX ORSTO CREAT EAPOL YALPX ABETI CCIPZ EREAZ
THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES A STRONG CLAIM NEEDS STRONG EVIDENCE THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER
commercial_code
commercial_code
null
{}
hard
en
185
185
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-0018094
--- .--. . -. / ... --- ..- .-. -.-. . / - --- --- .-.. ... / .- .-.. .-.. --- .-- / .. -. -.. . .--. . -. -.. . -. - / ...- . .-. .. ..-. .. -.-. .- - .. --- -. / .--. --- .-.. -.-- .- .-.. .--. .... .- -... . - .. -.-. / -.-. .. .--. .... . .-. ... / ..- ... . / -- ..- .-.. - .. .--. .-.. . / .- .-.. .--. .... .- -.....
--- .--. . -. / ... --- ..- .-. -.-. . / - --- --- .-.. ... / .- .-.. .-.. --- .-- / .. -. -.. . .--. . -. -.. . -. - / ...- . .-. .. ..-. .. -.-. .- - .. --- -. / .--. --- .-.. -.-- .- .-.. .--. .... .- -... . - .. -.-. / -.-. .. .--. .... . .-. ... / ..- ... . / -- ..- .-.. - .. .--. .-.. . / .- .-.. .--. .... .- -.....
OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS
morse_code
morse_code
null
{}
hard
en
89
89
synthetic_educational
null
null
[ "symbol_decode", "frequency_analysis" ]
Morse code: dots and dashes; word-separated by / symbol.
nihilist-v3-0023
44 57 57 57 56 27 52 25 56 69 28 27 43
44 57 57 57 56 27 52 25 56 69 28 27 43
FULL SAIL AHEAD
nihilist
nihilist
fractionation
{ "polybius": "PALACE", "keyword": "BATTLE" }
advanced
en
26
38
cipher_museum
2.0
public
null
null
lorenz-v3-0121
THEPRINTINGPRESSCHANGESCLL
THEPRINTINGPRESSCHANGESCLL
THE PRINTING PRESS CHANGES ALL
lorenz
lorenz
machine
{ "type": "seed", "value": "FISH" }
expert
en
26
26
cipher_museum
2.0
public
null
null
typex-v3-0343
HIAIBHWJYJQSFBIHPTWOD
HIAIBHWJYJQSFBIHPTWOD
SONS OF LIBERTY ASSEMBLE
typex
typex
machine
{ "type": "keyword", "value": "WINSTON" }
expert
en
21
21
cipher_museum
2.0
public
null
null
geez-monastic-212
YEWEPQYKEPPFTKJGFPEYEHJBOEYOEQZHSRQYMSHQZKSRE
YEWEPQYKEPPFTKJGFPEYEHJBOEYOEQZHSRQYMSHQZKSRE
NEVER INTERRUPT YOUR ENEMY WHEN HE IS MAKING A MISTAKE
geez_monastic
geez_monastic
substitution
{ "type": "keyword", "value": "MUSEUM" }
advanced
en
45
45
cipher_museum
0.2
public
null
null
stager-route-v3-0118
LAWOWBRERIDTHGEEDXXR
LAWOWBRERIDTHGEEDXXR
LOWER THE DRAWBRIDGE
stager_route
stager_route
transposition
{ "type": "integer", "value": 10 }
expert
en
20
20
cipher_museum
2.0
public
null
null
fractionated-morse-v2-0564
DEDWNLDPELENQVVARCTPAPSESEMGELJENPWMTPGEGFNLUPGKQAPSASETRGJRKPGKPMGSJQSCGDVQXSKV
DEDWNLDPELENQVVARCTPAPSESEMGELJENPWMTPGEGFNLUPGKQAPSASETRGJRKPGKPMGSJQSCGDVQXSKV
BLOOD SWEAT AND TEARS THESE ARE WHAT I OFFER YOU FOR THE DEFENSE OF OUR ISLAND NATION
fractionated_morse
fractionated_morse
fractionation
{ "type": "keyword", "value": "JUSTICE" }
advanced
en
80
80
cipher_museum
2.0
public
null
null
kryha-v2-0236
TSJRXKSQONVYQILQYYENMCBWPEHALINSEELIPQZFKLFCAJFHKUJOQGMUNHAVJQTFDVYXJOYYINEBCMBEFZPDTBMXAOLFOMBLDFAGRHFDBMUSHHFOMAJSCEITELUWOGVXPPYWQTFC
TSJRXKSQONVYQILQYYENMCBWPEHALINSEELIPQZFKLFCAJFHKUJOQGMUNHAVJQTFDVYXJOYYINEBCMBEFZPDTBMXAOLFOMBLDFAGRHFDBMUSHHFOMAJSCEITELUWOGVXPPYWQTFC
WE SHALL FIGHT ON THE BEACHES WE SHALL FIGHT ON THE LANDING GROUNDS WE SHALL FIGHT IN THE FIELDS AND IN THE STREETS WE SHALL FIGHT IN THE HILLS WE SHALL NEVER SURRENDER
kryha
kryha
machine
{ "type": "keyword", "value": "VIENNA" }
expert
en
136
136
cipher_museum
2.0
public
null
null
cda-0011365
TIGGI YKJBR FPEGI SYVKI UOPBP MSCGI SWKTI TSYSP ZPYDK TGJZB JBAOE OEXYP NHZLF GSGDJ TNNDP ZYMAM URFJC YWWQ
TIGGI YKJBR FPEGI SYVKI UOPBP MSCGI SWKTI TSYSP ZPYDK TGJZB JBAOE OEXYP NHZLF GSGDJ TNNDP ZYMAM URFJC YWWQ
THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG
trithemius
trithemius
null
{}
hard
en
89
89
synthetic_educational
null
null
[]
kryha-v2-0091
UPTERUKQFUCCWGQEVSVYGRTXGYLJQCNVIUELXRHKWRHUKHAONZXPUZHYMXYJXKYGOSUWOABCJGGXLVUM
UPTERUKQFUCCWGQEVSVYGRTXGYLJQCNVIUELXRHKWRHUKHAONZXPUZHYMXYJXKYGOSUWOABCJGGXLVUM
THE SECRET LIES BURIED BENEATH THE THIRD FLAGSTONE OF THE OLD CHURCH COURTYARD AT DAWN TOMORROW
kryha
kryha
machine
{ "type": "keyword", "value": "MUNICH" }
expert
en
80
80
cipher_museum
2.0
public
null
null
cda-0020144
AAABA BAAAA BABBA ABBBA BAABA ABBAB AABBA BAAAA AAAAA ABBBA AABBB BABBA BAAAA AABAA BABAA AAAAA BAAAA AAABB BAAAB ABBBA AAAAA BAABA ABAAA AABAA ABBAA AAABA AABAA AAAAA ABBAA AAABB AAABA AAAAA BAAAA AABAA AABAB BAABB ABABA BAABA AABBB ABAAA ABBAA ABAAB ABAAA ABBAA AABBA AAAAB BAAAA BAABB BAABA AABAA AABAB ABBAB BAAAA AA...
AAABA BAAAA BABBA ABBBA BAABA ABBAB AABBA BAAAA AAAAA ABBBA AABBB BABBA BAAAA AABAA BABAA AAAAA BAAAA AAABB BAAAB ABBBA AAAAA BAABA ABAAA AABAA ABBAA AAABA AABAA AAAAA ABBAA AAABB AAABA AAAAA BAAAA AABAA AABAB BAABB ABABA BAABA AABBB ABAAA ABBAA ABAAB ABAAA ABBAA AABBA AAAAB BAAAA BAABB BAABA AABAA AABAB ABBAB BAAAA AA...
CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION
bacon_cipher
bacon_cipher
null
{}
hard
en
635
635
synthetic_educational
null
null
[ "five_bit_decode", "ab_frequency_analysis" ]
Bacon's biliteral cipher: each letter encoded as 5-bit A/B string.
sigaba-120
PWHVDLSXWXPSUYJTJQNEBOOVDSMVQXQEMUUNYUFQKZWFEMAVPYNFFUYIDIYDYZYXLBAWBRSEPWKASXWYFKOWRHALYADRTGZKDFKFOVYJZSUOLVSLBKPYIMLPYROCRNTBJCCSGJUWQZTXMGS
PWHVDLSXWXPSUYJTJQNEBOOVDSMVQXQEMUUNYUFQKZWFEMAVPYNFFUYIDIYDYZYXLBAWBRSEPWKASXWYFKOWRHALYADRTGZKDFKFOVYJZSUOLVSLBKPYIMLPYROCRNTBJCCSGJUWQZTXMGS
CRYPTANALYSIS IS THE ART OF BREAKING CODES WITHOUT THE KEY AND IT HAS BEEN PRACTICED FOR AS LONG AS THERE HAVE BEEN CODES TO BREAK THE HISTORY OF CRYPTOLOGY IS A BATTLE OF WITS
sigaba
sigaba
machine
{ "type": "seed", "value": "CIPHER" }
expert
en
143
143
cipher_museum
0.2
public
null
null
cardano-autokey-v3-0254
KALJFCVHFPPFORJ
KALJFCVHFPPFORJ
THE FACTORY ROARS
cardano_autokey
cardano_autokey
polyalphabetic
{ "type": "keyword", "value": "ROME" }
advanced
en
15
15
cipher_museum
2.0
public
null
null
m209-v2-0157
IZRXHUZWISBU
IZRXHUZWISBU
VENI VIDI VICI
m209
m209
machine
{ "type": "seed", "value": "FREEDOM" }
expert
en
12
12
cipher_museum
2.0
public
null
null
scytale-v2-0218
YOOEEEMEOONOPXABMNUISTTGEYIRFEIREHLGMYTTANIIHIOOICTNNTSUASTFDEXSCCTTRESXIHCOHONTX
YOOEEEMEOONOPXABMNUISTTGEYIRFEIREHLGMYTTANIIHIOOICTNNTSUASTFDEXSCCTTRESXIHCOHONTX
YOUR MISSION IF YOU CHOOSE TO ACCEPT IT IS TO EXTRACT THE AGENT FROM BEHIND ENEMY LINES TONIGHT
scytale
scytale
transposition
{ "type": "integer", "value": 9 }
intermediate
en
81
81
cipher_museum
2.0
public
null
null
vic-202
2909358990820608990858190240892909358990820938588899085819024089
2909358990820608990858190240892909358990820938588899085819024089
IT WAS THE BEST OF TIMES IT WAS THE WORST OF TIMES
vic
vic
substitution
{ "type": "keyword", "value": "ENIGMA" }
advanced
en
64
64
cipher_museum
0.2
public
null
null
cda-0006535
INTK BYRT IUCE TEEB OSRN CEUO HARL MRRS IMEL SPEE YOPO RNTT LFAN SFEC OSOS UPRE YSRN DEMM ESKA PEEV YOFI ILHU EESG ONFE KCSN SVDI ETMT SIFE OFMH BSWA
INTK BYRT IUCE TEEB OSRN CEUO HARL MRRS IMEL SPEE YOPO RNTT LFAN SFEC OSOS UPRE YSRN DEMM ESKA PEEV YOFI ILHU EESG ONFE KCSN SVDI ETMT SIFE OFMH BSWA
KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE
double_transposition
double_transposition
null
{ "key1": "MUSEUM", "key2": "DRAGON" }
hard
en
120
120
synthetic_educational
null
null
[ "key_length_search", "anagram_recovery" ]
Double columnar transposition: apply columnar twice for stronger security.
cda-0003292
EETAESSUAIISEUSXELCUSGCROABIXHRIIVOKSSHCARLGXRFEMRRDEEOTMEAVUSGMDDRTCTNTCINXUUNHCIEFRHPEXAEDSCETRDEDUNSENLREERLTAN
EETAESSUAIISEUSXELCUSGCROABIXHRIIVOKSSHCARLGXRFEMRRDEEOTMEAVUSGMDDRTCTNTCINXUUNHCIEFRHPEXAEDSCETRDEDUNSENLREERLTAN
THE ARCHITECTURE SHOULD MAKE MISUSE HARDER PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN A STRONG CLAIM NEEDS STRONG EVIDENCE
double_transposition
double_transposition
null
{ "key1": "CIPHER", "key2": "SIGNAL" }
hard
en
114
114
synthetic_educational
null
null
[ "key_length_search", "anagram_recovery" ]
Double columnar transposition: apply columnar twice for stronger security.
vic-v3-0161
90834898644808581518283901899083491590184690489864480518419010908349101924888944108990410804848508990886904809083189
90834898644808581518283901899083491590184690489864480518419010908349101924888944108990410804848508990886904809083189
THE SPEED OF LIGHT IS THE ULTIMATE SPEED LIMIT IN THE UNIVERSE EINSTEIN DEMONSTRATED THIS
vic
vic
substitution
{ "type": "keyword", "value": "NICKEL" }
advanced
en
116
116
cipher_museum
2.0
public
null
null
morse-code-v2-0087
.- .-.. .- -. / - ..- .-. .. -. --. / .- -. -.. / --. --- .-. -.. --- -. / .-- . .-.. -.-. .... -- .- -. / -... ..- .. .-.. - / - .... . / -... --- -- -... . / - --- / .- - - .- -.-. -.- / - .... . / --. . .-. -- .- -. / . -. .. --. -- .- / -.-. .. .--. .... . .-. / -- .- -.-. .... .. -. .
.- .-.. .- -. / - ..- .-. .. -. --. / .- -. -.. / --. --- .-. -.. --- -. / .-- . .-.. -.-. .... -- .- -. / -... ..- .. .-.. - / - .... . / -... --- -- -... . / - --- / .- - - .- -.-. -.- / - .... . / --. . .-. -- .- -. / . -. .. --. -- .- / -.-. .. .--. .... . .-. / -- .- -.-. .... .. -. .
ALAN TURING AND GORDON WELCHMAN BUILT THE BOMBE TO ATTACK THE GERMAN ENIGMA CIPHER MACHINE
morse_code
morse_code
encoding
{ "type": "none", "value": null }
beginner
en
201
290
cipher_museum
2.0
public
null
null
fialka-143
AXSAKWSRWYTIF
AXSAKWSRWYTIF
THE KING IS DEAD
fialka
fialka
machine
{ "type": "seed", "value": "SECRET" }
expert
en
13
13
cipher_museum
0.2
public
null
null