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2.11k
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stringlengths
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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
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2 values
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stringclasses
2 values
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stringclasses
1 value
attack_methods
listlengths
0
3
educational_note
stringclasses
32 values
geez-monastic-v2-0146
TDIFZPIEOSCOESIPJZSVTB
TDIFZPIEOSCOESIPJZSVTB
EXTRACTION POINT CHANGED
geez_monastic
geez_monastic
substitution
{ "type": "keyword", "value": "AXUM" }
advanced
en
22
22
cipher_museum
2.0
public
null
null
enigma-v2-0994
DMVYVYGYUJZEMGKIRHLBWXDFEOBTIIKNKEMVTRUZLCNDOWGYLKSVGYVBXYXVHQQMCJORSKTDPITNAVVEYUDKLWFFCYDZSRQFVOBLPPXHLBBYZBKRTNKNQNRNKMGIIOMKEOPBDYHMVOCABILCAYVKZID
DMVYVYGYUJZEMGKIRHLBWXDFEOBTIIKNKEMVTRUZLCNDOWGYLKSVGYVBXYXVHQQMCJORSKTDPITNAVVEYUDKLWFFCYDZSRQFVOBLPPXHLBBYZBKRTNKNQNRNKMGIIOMKEOPBDYHMVOCABILCAYVKZID
ALL WARFARE IS BASED ON DECEPTION HENCE WHEN ABLE TO ATTACK WE MUST SEEM UNABLE WHEN USING OUR FORCES WE MUST SEEM INACTIVE WHEN WE ARE NEAR WE MUST MAKE THE ENEMY BELIEVE WE ARE FAR AWAY
enigma
enigma
machine
{ "type": "rotor_start", "value": "VWX" }
expert
en
151
151
cipher_museum
2.0
public
null
null
beaufort-v3-0431
CBYBGNSRHYNGEG
CBYBGNSRHYNGEG
THE SIEGE BEGINS
beaufort
beaufort
polyalphabetic
{ "type": "keyword", "value": "VICTORY" }
intermediate
en
14
14
cipher_museum
2.0
public
null
null
diana-v3-0371
SBXLKLLUEYTJGUTPNQOOQUWBLQTNLGQEWTYTPUAAZGTABRPTDLXKGPMYUCXBRRHXQJLKPJAITR
SBXLKLLUEYTJGUTPNQOOQUWBLQTNLGQEWTYTPUAAZGTABRPTDLXKGPMYUCXBRRHXQJLKPJAITR
THE THIN RED LINE STOOD FIRM AT BALACLAVA AS THE RUSSIAN CAVALRY CHARGED ACROSS THE PLAIN
diana
diana
polyalphabetic
{ "type": "keyword", "value": "LIBERTY" }
intermediate
en
74
74
cipher_museum
2.0
public
null
null
cda-0021970
GIZMH KLHRG RLMXR KSVIH IVZII ZMTVO VGGVI HDRGS LFGHF YHGRG FGRLM
GIZMH KLHRG RLMXR KSVIH IVZII ZMTVO VGGVI HDRGS LFGHF YHGRG FGRLM
TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION
atbash
atbash
null
{}
medium
en
55
55
synthetic_educational
null
null
[ "self_inverse_check", "frequency_analysis" ]
Atbash maps A↔Z, B↔Y, … and is its own inverse.
autokey-151
OIJFPWPLLGPWKBXZWMFVXZWETFZAHPSXOPDXNEETEGACPOVRAKIFVUUTP
OIJFPWPLLGPWKBXZWMFVXZWETFZAHPSXOPDXNEETEGACPOVRAKIFVUUTP
WE HOLD THESE TRUTHS TO BE SELF EVIDENT THAT ALL MEN ARE CREATED EQUAL
autokey
autokey
polyalphabetic
{ "type": "keyword", "value": "SECRET" }
intermediate
en
57
57
cipher_museum
0.2
public
null
null
chaocipher-v2-0419
RJZKRMHCPFWBOIEQIBTLADOSYLYYXJRWIUOUDSZBEHSVEQITP
RJZKRMHCPFWBOIEQIBTLADOSYLYYXJRWIUOUDSZBEHSVEQITP
ALL THAT GLITTERS IS NOT GOLD OFTEN HAVE YOU HEARD THAT TOLD
chaocipher
chaocipher
machine
{ "type": "keyword", "value": "JUSTICE" }
advanced
en
49
49
cipher_museum
2.0
public
null
null
cda-0021856
.--. .- - - . .-. -. / .-- --- .-. -.. ... / .... . .-.. .--. / -... .-. . .- -.- / -- --- -. --- .- .-.. .--. .... .- -... . - .. -.-. / ... ..- -... ... - .. - ..- - .. --- -.
.--. .- - - . .-. -. / .-- --- .-. -.. ... / .... . .-.. .--. / -... .-. . .- -.- / -- --- -. --- .- .-.. .--. .... .- -... . - .. -.-. / ... ..- -... ... - .. - ..- - .. --- -.
PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION
morse_code
morse_code
null
{}
medium
en
47
47
synthetic_educational
null
null
[ "symbol_decode", "frequency_analysis" ]
Morse code: dots and dashes; word-separated by / symbol.
monoalphabetic-v2-1167
WJJTCR SKOLRCQ
WJJTCR SKOLRCQ
ANNUIT COEPTIS
monoalphabetic
monoalphabetic
substitution
{ "type": "keyword", "value": "WISDOM" }
beginner
en
13
14
cipher_museum
2.0
public
null
null
kryptos-v2-0247
XNWXMMUFKTAFKXVJKTYCOYBBXDQGVNWRYKUYNOYKKGDJUMPIJYGHUWKBUVFKPVFYBKTTJXYBFOYTSNFHQMVEXXDXRSOVKWMRVNSITHXIGVKKSYBEVKZLSIWUVXSPJPUUTBDKSYLZLXIGWFOQCVPSJK
XNWXMMUFKTAFKXVJKTYCOYBBXDQGVNWRYKUYNOYKKGDJUMPIJYGHUWKBUVFKPVFYBKTTJXYBFOYTSNFHQMVEXXDXRSOVKWMRVNSITHXIGVKKSYBEVKZLSIWUVXSPJPUUTBDKSYLZLXIGWFOQCVPSJK
AFTER AN UNEQUIVOCAL EXPERIENCE OF THE INEFFICIENCY OF THE SUBSISTING FEDERAL GOVERNMENT YOU ARE CALLED UPON TO DELIBERATE ON A NEW CONSTITUTION FOR THE UNITED STATES OF AMERICA
kryptos
kryptos
polyalphabetic
{ "type": "keyword", "value": "LANGLEY" }
advanced
en
150
150
cipher_museum
2.0
public
null
null
diana-v2-0286
SAWIMEOLDKAQUAAIS
SAWIMEOLDKAQUAAIS
NOVUS ORDO SECLORUM
diana
diana
polyalphabetic
{ "type": "keyword", "value": "FORCES" }
intermediate
en
17
17
cipher_museum
2.0
public
null
null
straddling-checkerboard-v2-0207
320523873961342375702381292346942282395349823626236268232370100985324900521123461241211471721876942270832582355
320523873961342375702381292346942282395349823626236268232370100985324900521123461241211471721876942270832582355
OBSERVATION EXPERIMENT AND REASON ARE THE THREE PILLARS OF ALL SCIENTIFIC INQUIRY AND PROGRESS
straddling_checkerboard
straddling_checkerboard
substitution
{ "type": "top_row", "value": "LIONSTRACE" }
advanced
en
111
111
cipher_museum
2.0
public
null
null
cda-0015383
6.6.8 2.3.1 19.2.7 7.6.1 14.1.3 18.3.1 3.5.5 7.1.9 1.6.2 10.1.9 12.3.7 14.3.8 7.1.1 9.2.3 12.5.1 9.5.2 11.3.5 4.1.3 15.4.4 9.5.6 12.5.3 16.4.7 2.4.5 10.1.1 14.6.8 3.2.1 18.3.3 15.5.7 20.3.9 17.6.7 10.4.9 4.4.9 11.5.6 4.5.8 3.1.7 6.4.6 10.6.5
6.6.8 2.3.1 19.2.7 7.6.1 14.1.3 18.3.1 3.5.5 7.1.9 1.6.2 10.1.9 12.3.7 14.3.8 7.1.1 9.2.3 12.5.1 9.5.2 11.3.5 4.1.3 15.4.4 9.5.6 12.5.3 16.4.7 2.4.5 10.1.1 14.6.8 3.2.1 18.3.3 15.5.7 20.3.9 17.6.7 10.4.9 4.4.9 11.5.6 4.5.8 3.1.7 6.4.6 10.6.5
THE BEST LESSONS SHOW WHERE THE METHOD FAILS
arnold_andre
arnold_andre
null
{}
medium
en
37
37
synthetic_educational
null
null
[ "book_cipher_attack", "triple_index_search" ]
Arnold-André book cipher: coordinates (page.section.word) referencing a shared text.
kl7-v2-0156
PUFRSEDHOTPTOYWMHLX
PUFRSEDHOTPTOYWMHLX
WISDOM GUARDS THE GATE
kl7
kl7
machine
{ "type": "seed", "value": "LIBERTY" }
expert
en
19
19
cipher_museum
2.0
public
null
null
nihilist-v2-0260
48 46 77 32 67 68 46 25 35 88 63 44 57 44 44 26 99
48 46 77 32 67 68 46 25 35 88 63 44 57 44 44 26 99
KEEP YOUR POWDER DRY
nihilist
nihilist
fractionation
{ "polybius": "TRIUMPH", "keyword": "JUSTICE" }
advanced
en
34
50
cipher_museum
2.0
public
null
null
bifid-v3-0299
HVDHFGMHMUBCEQAICX
HVDHFGMHMUBCEQAICX
LOWER THE DRAWBRIDGE
bifid
bifid
fractionation
{ "type": "keyword", "value": "FREEDOM" }
advanced
en
18
18
cipher_museum
2.0
public
null
null
jn25-v2-0096
26199 26187 26184 26105 26188 26192 26192 26184 26197 26192 26180 26193 26193 26199 26184 26191 26184 26186 26197 26180 26192 26102 26180 26198 26183 26184 26182 26194 26183 26184 26183 26181 26104 26197 26194 26194 26192 26185 26194 26197 26199 26104 26188 26193 26191 26194 26193 26183 26194 26193 26180 26193 26183 26...
26199 26187 26184 26105 26188 26192 26192 26184 26197 26192 26180 26193 26193 26199 26184 26191 26184 26186 26197 26180 26192 26102 26180 26198 26183 26184 26182 26194 26183 26184 26183 26181 26104 26197 26194 26194 26192 26185 26194 26197 26199 26104 26188 26193 26191 26194 26193 26183 26194 26193 26180 26193 26183 26...
THE ZIMMERMANN TELEGRAM WAS DECODED BY ROOM FORTY IN LONDON AND BROUGHT AMERICA INTO THE GREAT WAR
jn25
jn25
codebook
{ "type": "additive", "value": "16180" }
expert
en
410
491
cipher_museum
2.0
public
null
null
cda-0020071
OBSEZ VABLX EVIDX NCECO MESBE FOREC ONFID ENCED
OBSEZ VABLX EVIDX NCECO MESBE FOREC ONFID ENCED
OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE
commercial_code
commercial_code
null
{}
medium
en
40
40
synthetic_educational
null
null
[ "codebook_frequency", "five_letter_group_analysis" ]
Commercial code: five-letter groups from a codebook, often ending in X or Z.
wheatstone-v2-0012
FYOOYJITLLJFKDYOHRG
FYOOYJITLLJFKDYOHRG
MISSION ACCOMPLISHED
wheatstone
wheatstone
polygraphic
{ "type": "keyword", "value": "TELEGRAPHY" }
advanced
en
19
19
cipher_museum
2.0
public
null
null
cda-0021190
¬ ┌· X· K L ⌐· ┘· ┌· r L ⌒ ┘· ┌· ┐ X ┘· ─ └ ⌒· ⌒ r· L ─ K r· L ┐ L ⌒· X ┐· ⌐ r L Γ· X X ┌ ⌐ └ └ Γ Γ· ⌐· ⌐· Γ· L ⌐ ─ Γ r· L └ └ ┌ ⌐ ─ Γ· ─ K ┌· ┘· Γ X· r L Γ ┐· X· ¬ └ Γ· r ┐ L ⌒· r ┌· ⌒· ┐· K ┘· ¬· ┌· ⌐ ┐· r· ⌒· Γ· ─ ─ Γ· ─ L K L L ─ X L K· L ─ K ⌒· X Γ· ⌣
¬ ┌· X· K L ⌐· ┘· ┌· r L ⌒ ┘· ┌· ┐ X ┘· ─ └ ⌒· ⌒ r· L ─ K r· L ┐ L ⌒· X ┐· ⌐ r L Γ· X X ┌ ⌐ └ └ Γ Γ· ⌐· ⌐· Γ· L ⌐ ─ Γ r· L └ └ ┌ ⌐ ─ Γ· ─ K ┌· ┘· Γ X· r L Γ ┐· X· ¬ └ Γ· r ┐ L ⌒· r ┌· ⌒· ┐· K ┘· ¬· ┌· ⌐ ┐· r· ⌒· Γ· ─ ─ Γ· ─ L K L L ─ X L K· L ─ K ⌒· X Γ· ⌣
BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX
pigpen
pigpen
null
{}
medium
en
40
40
synthetic_educational
null
null
[ "symbol_frequency", "grid_position_decode" ]
Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids.
tap-code-v2-0033
.. . ... . . ..... . ..... .... .... . . .... ... .... ... . ..... ... .. . .. ... . . ..... .... ... . . .... .... .. ... . . .... .. . .. ... .... .... ..
.. . ... . . ..... . ..... .... .... . . .... ... .... ... . ..... ... .. . .. ... . . ..... .... ... . . .... .... .. ... . . .... .. . .. ... .... .... ..
FLEET ASSEMBLES AT HARBOR
tap_code
tap_code
substitution
{ "type": "none", "value": null }
beginner
en
113
198
cipher_museum
2.0
public
null
null
great-cipher-v2-0326
103 117 154 154 156 147 130 101 140 143 140 114 121 111 121 149 156 124 175 150 154 119 180 118 103 149 132 175 169 158 133 157 129 131 132 143 125 178 176 175 131 137 141 170 147 128 131 164 105 138 135 103 155 101 117 164 119 136
103 117 154 154 156 147 130 101 140 143 140 114 121 111 121 149 156 124 175 150 154 119 180 118 103 149 132 175 169 158 133 157 129 131 132 143 125 178 176 175 131 137 141 170 147 128 131 164 105 138 135 103 155 101 117 164 119 136
RECONNOITER THE ENEMY POSITION AND REPORT BACK BEFORE NIGHTFALL WITH A FULL STRENGTH COUNT
great_cipher
great_cipher
nomenclator
{ "type": "seed", "value": "FRANCE" }
expert
en
174
231
cipher_museum
2.0
public
null
null
m209-v3-0325
JWZYBMLUZWMLJMORKQCYB
JWZYBMLUZWMLJMORKQCYB
THE CASTLE IS SURROUNDED
m209
m209
machine
{ "type": "seed", "value": "VICTORY" }
expert
en
21
21
cipher_museum
2.0
public
null
null
fractionated-morse-255
JQGAGILBKGEAVABAY
JQGAGILBKGEAVABAY
OPERATION BEGINS
fractionated_morse
fractionated_morse
fractionation
{ "type": "keyword", "value": "CRYPTIC" }
advanced
en
17
17
cipher_museum
0.2
public
null
null
cda-0021145
EXHGEXNLAUXYSFXQKBWLFVSNUFELIFXFPIYAEMLJJOAWVXTXIQGSEUPDOCMUHMHDKEZLCPFXEICUVXSDUYTFMHEDXRXEAURXLMFRFRAOCELKCGDCIJUBYYQFMIASTQDOKHKJKQHYYCTJYBAIGQAMMQVOMHPUUWRCYIZKTUFXFPWTJRFBIXVOJN
EXHGEXNLAUXYSFXQKBWLFVSNUFELIFXFPIYAEMLJJOAWVXTXIQGSEUPDOCMUHMHDKEZLCPFXEICUVXSDUYTFMHEDXRXEAURXLMFRFRAOCELKCGDCIJUBYYQFMIASTQDOKHKJKQHYYCTJYBAIGQAMMQVOMHPUUWRCYIZKTUFXFPWTJRFBIXVOJN
EVERY SYSTEM NEEDS AN HONEST THREAT MODEL KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION THE BEST LESSONS SHOW WHERE THE METHOD FAILS
vernam
vernam
null
{}
hard
en
182
182
synthetic_educational
null
null
[ "key_reuse_attack", "information_theoretic_proof" ]
Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP.
typex-057
NIAMJBNWXVSKNAFATHJSHGQJPSVRWEWSRFLOWNGHOQMFPTQOIRLSQFFQZARMDQGBPMOCGAZEXYHGTUIGORYKFGIGXYNORRPFXWONAFGHHDZFXMVEMUVDSRVEUPPCPCGMSSLXWVHBBVGUEINNUPXBPRJGHAS
NIAMJBNWXVSKNAFATHJSHGQJPSVRWEWSRFLOWNGHOQMFPTQOIRLSQFFQZARMDQGBPMOCGAZEXYHGTUIGORYKFGIGXYNORRPFXWONAFGHHDZFXMVEMUVDSRVEUPPCPCGMSSLXWVHBBVGUEINNUPXBPRJGHAS
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
typex
typex
machine
{ "type": "keyword", "value": "TYPEX" }
expert
en
155
155
cipher_museum
0.2
public
null
null
vernam-105
JLLSGYWYVYHDBIPBJVKOSJRTNASGLJDMMZVATMGAGSLBVXDMQCOYBMKBGCVL
JLLSGYWYVYHDBIPBJVKOSJRTNASGLJDMMZVATMGAGSLBVXDMQCOYBMKBGCVL
KNOWLEDGE IS POWER AND INFORMATION IS THE KEY TO VICTORY IN ANY CONFLICT
vernam
vernam
stream
{ "type": "pad", "value": "ZYXWVUTS (repeating)" }
expert
en
60
60
cipher_museum
0.2
public
null
null
joseon-yeokhak-v3-0110
HVSUOHSGVCZRTWFA
HVSUOHSGVCZRTWFA
THE GATES HOLD FIRM
joseon_yeokhak
joseon_yeokhak
substitution
{ "type": "keyword", "value": "JOSEON" }
beginner
en
16
16
cipher_museum
2.0
public
null
null
fialka-v3-0089
UBMBBPSKXSGULKQIVBTSPMNIEYYTKHFLPFLZZGOIYQVIGMWVVWDCRODDDQNUOBUFJLVKWWGEAHEMIYHJKZC
UBMBBPSKXSGULKQIVBTSPMNIEYYTKHFLPFLZZGOIYQVIGMWVVWDCRODDDQNUOBUFJLVKWWGEAHEMIYHJKZC
RSA ENCRYPTION RELIES ON THE MATHEMATICAL DIFFICULTY OF FACTORING THE PRODUCT OF TWO LARGE PRIMES
fialka
fialka
machine
{ "type": "seed", "value": "MOSCOW" }
expert
en
83
83
cipher_museum
2.0
public
null
null
cda-0013265
- .... . / - .-. .. - .... . -- .. ..- ... / -.-. .. .--. .... . .-. / .- -.. ...- .- -. -.-. . ... / - .... . / .- .-.. .--. .... .- -... . - / -... -.-- / --- -. . / .--. --- ... .. - .. --- -. / . .- -.-. .... / .-.. . - - . .-.
- .... . / - .-. .. - .... . -- .. ..- ... / -.-. .. .--. .... . .-. / .- -.. ...- .- -. -.-. . ... / - .... . / .- .-.. .--. .... .- -... . - / -... -.-- / --- -. . / .--. --- ... .. - .. --- -. / . .- -.-. .... / .-.. . - - . .-.
THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER
morse_code
morse_code
null
{}
medium
en
61
61
synthetic_educational
null
null
[ "symbol_decode", "frequency_analysis" ]
Morse code: dots and dashes; word-separated by / symbol.
cardano-autokey-218
FALVVTDFKLGTRKBHETAOHVZFFIRTXVETEJCBXGMKVRTXH
FALVVTDFKLGTRKBHETAOHVZFFIRTXVETEJCBXGMKVRTXH
THE REPORTS OF MY DEATH HAVE BEEN GREATLY EXAGGERATED
cardano_autokey
cardano_autokey
polyalphabetic
{ "type": "keyword", "value": "MUSEUM" }
advanced
en
45
45
cipher_museum
0.2
public
null
null
kryha-v2-0077
VBUBYRHXRLMBYYNPWSGBVFFXGBHZRIVQTBLXZLRVVSSSIWKFXDULMZXZTQYERNGGVIELPVHWFYJFK
VBUBYRHXRLMBYYNPWSGBVFFXGBHZRIVQTBLXZLRVVSSSIWKFXDULMZXZTQYERNGGVIELPVHWFYJFK
SUPPLY LINES HAVE BEEN CUT RATIONS FOR THREE DAYS ONLY AWAIT RESUPPLY OR BREAK THROUGH LINES
kryha
kryha
machine
{ "type": "keyword", "value": "MUNICH" }
expert
en
77
77
cipher_museum
2.0
public
null
null
slidex-v2-0174
HMLUOCVTTTCYUHWSTQAVHDGSWJAVHTEWJKVHNAQUABSNFELOAIZWZHVBILQWSALEWSTQ
HMLUOCVTTTCYUHWSTQAVHDGSWJAVHTEWJKVHNAQUABSNFELOAIZWZHVBILQWSALEWSTQ
ALL THE WORLDS A STAGE AND EACH MAN IN HIS TIME PLAYS MANY PARTS ON LIFES GREAT STAGE
slidex
slidex
transposition
{ "type": "keyword", "value": "LIBERTY" }
advanced
en
68
68
cipher_museum
2.0
public
null
null
cda-0005918
GENAFCBFVGVBA PVCUREF ERNEENATR YRGGREF JVGUBHG FHOFGVGHGVBA PNRFNE FUVSGRQ GUR NYCUNORG OL GUERR CBFVGVBAF UHZNA ERNQNOYR BHGCHG FUBHYQ FUBJ NYY ERNFBAVAT FGRCF GUR RAVTZN ZNPUVAR HFRQ EBGBEF GB PERNGR N CBYLNYCUNORGVP PVCURE
GENAFCBFVGVBA PVCUREF ERNEENATR YRGGREF JVGUBHG FHOFGVGHGVBA PNRFNE FUVSGRQ GUR NYCUNORG OL GUERR CBFVGVBAF UHZNA ERNQNOYR BHGCHG FUBHYQ FUBJ NYY ERNFBAVAT FGRCF GUR RAVTZN ZNPUVAR HFRQ EBGBEF GB PERNGR N CBYLNYCUNORGVP PVCURE
TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER
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.
scytale-v3-0255
IHLLTASOTOTULEANSRBFINYDSIITEASIAGINOUIWAVCENPNNNITEKDGOOEWFRRNTLSFMAEUSOHESAUNXTAWAMEFSTX
IHLLTASOTOTULEANSRBFINYDSIITEASIAGINOUIWAVCENPNNNITEKDGOOEWFRRNTLSFMAEUSOHESAUNXTAWAMEFSTX
IT IS A TRUTH UNIVERSALLY ACKNOWLEDGED THAT A SINGLE MAN IN POSSESSION OF A FORTUNE MUST BE IN WANT OF A WIFE
scytale
scytale
transposition
{ "type": "integer", "value": 10 }
intermediate
en
90
90
cipher_museum
2.0
public
null
null
sigaba-v2-0425
QEWPQGBDAPJDTBXEJGHTRDBJUHAPBVYIMPSZKSGAFRGUQCWFDQHCNOYEKKVVLLOPMU
QEWPQGBDAPJDTBXEJGHTRDBJUHAPBVYIMPSZKSGAFRGUQCWFDQHCNOYEKKVVLLOPMU
WE ARE SUCH STUFF AS DREAMS ARE MADE ON AND OUR LITTLE LIFE IS ROUNDED WITH A SLEEP
sigaba
sigaba
machine
{ "type": "seed", "value": "LIBERTY" }
expert
en
66
66
cipher_museum
2.0
public
null
null
adfgx-v2-0270
GXADFGFDDAFAGDGDADAFFADAAAFD
GXADFGFDDAFAGDGDADAFFADAAAFD
LIBERTY OR DEATH
adfgx
adfgx
fractionation
{ "polybius": "TRIUMPH", "columnar": "JUSTICE" }
advanced
en
28
28
cipher_museum
2.0
public
null
null
geheimschreiber-078
YNXIJWFZNEPTJBUX
YNXIJWFZNEPTJBUX
BURN AFTER READING
geheimschreiber
geheimschreiber
machine
{ "type": "seed", "value": "CIPHER" }
expert
en
16
16
cipher_museum
0.2
public
null
null
enigma-299
FDAPQGCBPMZLAVKYMNPYLPHLZQHHSSJMYZVEPQFUGBEBYDUPDGVKXFOTFKAUCICIBQTPVKSVMYMDMFDTQZCCBUSAVVDVAXMZZCSYZPJAJWRJARDLVVIXUKHXVPZKUTRQQDXVJJMCPZQXQFIBYXMX
FDAPQGCBPMZLAVKYMNPYLPHLZQHHSSJMYZVEPQFUGBEBYDUPDGVKXFOTFKAUCICIBQTPVKSVMYMDMFDTQZCCBUSAVVDVAXMZZCSYZPJAJWRJARDLVVIXUKHXVPZKUTRQQDXVJJMCPZQXQFIBYXMX
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
enigma
enigma
machine
{ "type": "rotor_start", "value": "CAT" }
expert
en
148
148
cipher_museum
0.2
public
null
null
nomenclator-v3-0125
60 16 18 09 14 20 09 14 07 16 18 05 19 19 03 08 01 14 07 05 19 01 12 12
60 16 18 09 14 20 09 14 07 16 18 05 19 19 03 08 01 14 07 05 19 01 12 12
THE PRINTING PRESS CHANGES ALL
nomenclator
nomenclator
nomenclator
{ "type": "seed", "value": "PALACE" }
expert
en
48
71
cipher_museum
2.0
public
null
null
culper-ring-v3-0060
998 802 807 800 817 806 804 999 101 100 998 811 808 806 807 819 999 998 801 817 808 806 800 803 804 999 151 100 998 821 800 811 811 804 824 999 101 998 803 804 800 819 807 999 998 817 814 803 804 999 100 998 818 808 823 999 998 807 820 813 803 817 804 803 999 998 801 817 800 821 804 999 998 802 800 821 800 811 808 804 ...
998 802 807 800 817 806 804 999 101 100 998 811 808 806 807 819 999 998 801 817 808 806 800 803 804 999 151 100 998 821 800 811 811 804 824 999 101 998 803 804 800 819 807 999 998 817 814 803 804 999 100 998 818 808 823 999 998 807 820 813 803 817 804 803 999 998 801 817 800 821 804 999 998 802 800 821 800 811 808 804 ...
CHARGE OF THE LIGHT BRIGADE INTO THE VALLEY OF DEATH RODE THE SIX HUNDRED BRAVE CAVALIERS
culper_ring
culper_ring
codebook
{ "type": "none", "value": null }
expert
en
249
331
cipher_museum
2.0
public
null
null
chinese-telegraph-v3-0119
8603 7654 7467 8528 7720 7467 7590 7467 7256 7467 7590 7720 8038 8528
8603 7654 7467 8528 7720 7467 7590 7467 7256 7467 7590 7720 8038 8528
THE SIEGE BEGINS
chinese_telegraph
chinese_telegraph
codebook
{ "type": "additive", "value": "27182" }
expert
en
56
69
cipher_museum
2.0
public
null
null
running-key-v2-0016
HCPVJOMVEGUWEO
HCPVJOMVEGUWEO
COVER MY RETREAT
running_key
running_key
polyalphabetic
{ "type": "text", "value": "Gettysburg Address opening" }
intermediate
en
14
14
cipher_museum
2.0
public
null
null
adfgvx-v3-0104
DGGAXDVXDDFVDDGVFVVVDVAVGAADGDDFVVAFXVVDVFDAFVFFDGDVDDDFGXVGGFADGDFDFFADGDAFAADGAVADGDDGGGAAAGDFADGDFGGFAGDGDAAGGGGFFAVFDGGGGFGVDFXDVGFVVGAXDDFFGGVFFFGVDAGFFVVVVDDGDFVGAVDAVFVDDAFAFADDFFDGFFGAFFAADDFGGGFFFAFADAAAGGADAADADFFAFGDAAADADAFGDAFFAGAAFFAAFVFGDGFDVAADFAGGDDADFFGAAAFDDGDFGFGAGFDFFADGGFFGVFXVVGDXFVVGAXDVDFFAGAAG...
DGGAXDVXDDFVDDGVFVVVDVAVGAADGDDFVVAFXVVDVFDAFVFFDGDVDDDFGXVGGFADGDFDFFADGDAFAADGAVADGDDGGGAAAGDFADGDFGGFAGDGDAAGGGGFFAVFDGGGGFGVDFXDVGFVVGAXDDFFGGVFFFGVDAGFFVVVVDDGDFVGAVDAVFVDDAFAFADDFFDGFFGAFFAADDFGGGFFFAFADAAAGGADAADADFFAFGDAAADADAFGDAFFAGAAFFAAFVFGDGFDVAADFAGGDDADFFGAAAFDDGDFGFGAGFDFFADGGFFGVFXVVGDXFVVGAXDVDFFAGAAG...
THE VENONA PROJECT WHICH RAN FROM NINETEEN FORTY THREE TO NINETEEN EIGHTY DECRYPTED THOUSANDS OF SOVIET INTELLIGENCE MESSAGES REVEALING THE IDENTITIES OF NUMEROUS AGENTS WHO HAD PENETRATED THE US GOVERNMENT
adfgvx
adfgvx
fractionation
{ "polybius": "PALACE", "columnar": "BATTLE" }
advanced
en
354
354
cipher_museum
2.0
public
null
null
purple-v2-0329
LDFDDTUPBJRBOXRQLEJYZUKPXKXXUAPTJAHEVBPTPIJISXSPTNPYUQDXZLYWCNREVWWGIYLBLZGYU
LDFDDTUPBJRBOXRQLEJYZUKPXKXXUAPTJAHEVBPTPIJISXSPTNPYUQDXZLYWCNREVWWGIYLBLZGYU
SUPPLY LINES HAVE BEEN CUT RATIONS FOR THREE DAYS ONLY AWAIT RESUPPLY OR BREAK THROUGH LINES
purple
purple
machine
{ "type": "seed", "value": "SAKURA" }
expert
en
77
77
cipher_museum
2.0
public
null
null
rail-fence-v2-0102
LRMFENPIFAAODIRVAAETBTTLRSNAORISEIEUTTILLFSLRLROCOSTUNEITANTEMSNTODMGISEIE
LRMFENPIFAAODIRVAAETBTTLRSNAORISEIEUTTILLFSLRLROCOSTUNEITANTEMSNTODMGISEIE
LIBERTÉ ÉGALITÉ FRATERNITÉ OU LA MORT CES MOTS DÉFINISSENT LA REVOLUTION FRANÇAISE DE MIL SEPT
rail_fence
rail_fence
transposition
{ "type": "integer", "value": 7 }
intermediate
en
74
74
cipher_museum
2.0
public
null
null
alberti-disk-v3-0555
WPJHCCAQPIZZV
WPJHCCAQPIZZV
THE APPLE FALLS
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 14 }
expert
en
13
13
cipher_museum
2.0
public
null
null
columnar-transposition-v2-0906
LELAAETSREAWVHHS
LELAAETSREAWVHHS
THE WALLS HAVE EARS
columnar_transposition
columnar_transposition
transposition
{ "type": "keyword", "value": "JUSTICE" }
intermediate
en
16
16
cipher_museum
2.0
public
null
null
enigma-v3-0728
PBPRFDFOHDKNNTRGRJTJBMDSPQCVAAXNYIMMZIPINQUJGJVMUKZWMQOATMHYDIZWYKUHXFMQIMKTHRWLHNRVATXFPMWBTRBJHSIIYNCMXZKEIYMMNPWEFUWAGLOYKFNYSUGYTBBSIDERUWSUWQFXYCLLRHTXWWRWAPSTXCTZMAPXEXIDG
PBPRFDFOHDKNNTRGRJTJBMDSPQCVAAXNYIMMZIPINQUJGJVMUKZWMQOATMHYDIZWYKUHXFMQIMKTHRWLHNRVATXFPMWBTRBJHSIIYNCMXZKEIYMMNPWEFUWAGLOYKFNYSUGYTBBSIDERUWSUWQFXYCLLRHTXWWRWAPSTXCTZMAPXEXIDG
THE VENONA PROJECT WHICH RAN FROM NINETEEN FORTY THREE TO NINETEEN EIGHTY DECRYPTED THOUSANDS OF SOVIET INTELLIGENCE MESSAGES REVEALING THE IDENTITIES OF NUMEROUS AGENTS WHO HAD PENETRATED THE US GOVERNMENT
enigma
enigma
machine
{ "type": "rotor_start", "value": "STU" }
expert
en
177
177
cipher_museum
2.0
public
null
null
two-square-110
EPISFMOLHTRTAMSTOBCNHTPGPGICFPPGTOOLEGDMFPUESKDMNEEIEIGBHGOREUSTHATFRONRHETSCRGTDMDDEAAYETBIINKGDMBUPGDEVOQLUHTOOLFPCASAHGORVIICERHEZFRWETHENSSTAALLMEBUURPZ
EPISFMOLHTRTAMSTOBCNHTPGPGICFPPGTOOLEGDMFPUESKDMNEEIEIGBHGOREUSTHATFRONRHETSCRGTDMDDEAAYETBIINKGDMBUPGDEVOQLUHTOOLFPCASAHGORVIICERHEZFRWETHENSSTAALLMEBUURPZ
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
two_square
two_square
polygraphic
{ "key1": "CIPHER", "key2": "MUSEUM" }
advanced
en
156
156
cipher_museum
0.2
public
null
null
cardano-autokey-065
VALGQOSLBAUNPER
VALGQOSLBAUNPER
THE COAST IS CLEAR
cardano_autokey
cardano_autokey
polyalphabetic
{ "type": "keyword", "value": "CIPHER" }
advanced
en
15
15
cipher_museum
0.2
public
null
null
purple-110
KGYBTKKAXFSTPJEKYYPRFVTBDDIKJVDCNCLBVMBJYYGEYDAXSTHMOKF
KGYBTKKAXFSTPJEKYYPRFVTBDDIKJVDCNCLBVMBJYYGEYDAXSTHMOKF
THE ART OF WAR IS OF VITAL IMPORTANCE TO THE STATE IT IS LIFE OR DEATH
purple
purple
machine
{ "type": "seed", "value": "CIPHER" }
expert
en
55
55
cipher_museum
0.2
public
null
null
alberti-disk-v3-0614
FPJZQFQDIYHPXEYXOMDTOFDXMWTPNOVWAHNASIHRARDQYTCJWCJCXHCQFPFKLFWKGFUOQFMGFPFKLJUALEQZTAOAYMFUNLQYQKXGAIDZLZDWOEVEKYKGOXGPVXCLDGCQJBWAYHTAFIVNOIXUUGUIQZDHRETBVIGXK
FPJZQFQDIYHPXEYXOMDTOFDXMWTPNOVWAHNASIHRARDQYTCJWCJCXHCQFPFKLFWKGFUOQFMGFPFKLJUALEQZTAOAYMFUNLQYQKXGAIDZLZDWOEVEKYKGOXGPVXCLDGCQJBWAYHTAFIVNOIXUUGUIQZDHRETBVIGXK
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": 14 }
expert
en
161
161
cipher_museum
2.0
public
null
null
double-transposition-125
TCOTSEHAISCAREL
TCOTSEHAISCAREL
THE COAST IS CLEAR
double_transposition
double_transposition
transposition
{ "key1": "ENEMY", "key2": "CIPHER" }
advanced
en
15
15
cipher_museum
0.2
public
null
null
cda-0021628
UBMCZ TXKRQ CDMFR KLDVK APMRE JIVSD BOKYV JDTAP WDDDD LPFSV RCNKV BOWHJ FEITT HONCP VQRON ZHXMV RPYXN DFODY LMRVM LKZRT XZJQW WZMYX CSKTX VORQW ELUIH BSALH KRJRJ SFGTJ JAGWI BSTAO PEJUY HGYXM MMHDO VPSY
UBMCZ TXKRQ CDMFR KLDVK APMRE JIVSD BOKYV JDTAP WDDDD LPFSV RCNKV BOWHJ FEITT HONCP VQRON ZHXMV RPYXN DFODY LMRVM LKZRT XZJQW WZMYX CSKTX VORQW ELUIH BSALH KRJRJ SFGTJ JAGWI BSTAO PEJUY HGYXM MMHDO VPSY
FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL
one_time_pad
one_time_pad
null
{}
hard
en
169
169
synthetic_educational
null
null
[ "information_theoretic_proof", "key_reuse_attack" ]
One-time pad: theoretically unbreakable if key is truly random and never reused.
gronsfeld-v3-0371
UKJAQJQWLMMLSLBURTKOJURHCCDQHLMDAHJTWMLAVVXPJOFFCJMUDJQBULLMBFWVBTWMLYMDNU
UKJAQJQWLMMLSLBURTKOJURHCCDQHLMDAHJTWMLAVVXPJOFFCJMUDJQBULLMBFWVBTWMLYMDNU
THE THIN RED LINE STOOD FIRM AT BALACLAVA AS THE RUSSIAN CAVALRY CHARGED ACROSS THE PLAIN
gronsfeld
gronsfeld
polyalphabetic
{ "type": "numeric", "value": "13579" }
intermediate
en
74
74
cipher_museum
2.0
public
null
null
beaufort-v2-1078
XKBANUXJNPYQARJJLCIZNJLIPTFNKMPAGALGAOZCUQIPPIJNMEKXAUMQSADVSGEBDLCRZQW
XKBANUXJNPYQARJJLCIZNJLIPTFNKMPAGALGAOZCUQIPPIJNMEKXAUMQSADVSGEBDLCRZQW
QUOTH THE RAVEN NEVERMORE THE BIRD SAT ON THE BUST OF PALLAS JUST ABOVE MY CHAMBER DOOR
beaufort
beaufort
polyalphabetic
{ "type": "keyword", "value": "NEPTUNE" }
intermediate
en
71
71
cipher_museum
2.0
public
null
null
copiale-v2-0311
D4 V3 C7 U9 E6 J4 M1 H0 A4 J6 R0 K8 C1 G4 O7 W4 V3 I0 B9 E6 J8 I4 U8 B8 D3 W5 A7 V8 R7 B8 I4 F5 G1 J4 H0 D0 V2 I4 Y8 Q6 W5 A6 U9 Q5 J4 D6 G4 E1 A4 S9 J6 V2 P3 O2 P9 J9 E1 H3 F9 S9 G2 A4 I5 K8 W4 V3 N6 D0 R7 G1 G2 B8
D4 V3 C7 U9 E6 J4 M1 H0 A4 J6 R0 K8 C1 G4 O7 W4 V3 I0 B9 E6 J8 I4 U8 B8 D3 W5 A7 V8 R7 B8 I4 F5 G1 J4 H0 D0 V2 I4 Y8 Q6 W5 A6 U9 Q5 J4 D6 G4 E1 A4 S9 J6 V2 P3 O2 P9 J9 E1 H3 F9 S9 G2 A4 I5 K8 W4 V3 N6 D0 R7 G1 G2 B8
WE SHALL FIGHT ON THE BEACHES AND WE SHALL FIGHT ON THE LANDING GROUNDS AND IN THE FIELDS
copiale
copiale
substitution
{ "type": "keyword", "value": "MYSTERY" }
advanced
en
144
215
cipher_museum
2.0
public
null
null
geez-monastic-v2-0206
IJTJTZLTSABTPHZFTIJTVHOFWOYVOBZSBIJTYEFQZQTSIAJOMTIJYOFIJJEAJZSBEMOFUTZPJSEVJI
IJTJTZLTSABTPHZFTIJTVHOFWOYVOBZSBIJTYEFQZQTSIAJOMTIJYOFIJJEAJZSBEMOFUTZPJSEVJI
THE HEAVENS DECLARE THE GLORY OF GOD AND THE FIRMAMENT SHOWETH FORTH HIS HANDIWORK EACH NIGHT
geez_monastic
geez_monastic
substitution
{ "type": "keyword", "value": "AXUM" }
advanced
en
78
78
cipher_museum
2.0
public
null
null
geheimschreiber-203
XBXAXIKDNHCRS
XBXAXIKDNHCRS
THE KING IS DEAD
geheimschreiber
geheimschreiber
machine
{ "type": "seed", "value": "MUSEUM" }
expert
en
13
13
cipher_museum
0.2
public
null
null
porta-v2-0641
MNKTWMNWDCPEYQ
MNKTWMNWDCPEYQ
TARGET ACQUIRED
porta
porta
polyalphabetic
{ "type": "keyword", "value": "PAPAL" }
intermediate
en
14
14
cipher_museum
2.0
public
null
null
rail-fence-v3-0095
TRAGCITAOCBLERIHCOWRIHOLWLYHSNSFRHOJLBTDESSNELSAENTNONLLENDYRARDEIEUTDASGALSLROAECECNIOTAAMONCWDBONTORITEITTVKMAORPHDTSUATSIICATRMWHDVREETERYWAREINTSIESROMHCYEELHREEOEVTME
TRAGCITAOCBLERIHCOWRIHOLWLYHSNSFRHOJLBTDESSNELSAENTNONLLENDYRARDEIEUTDASGALSLROAECECNIOTAAMONCWDBONTORITEITTVKMAORPHDTSUATSIICATRMWHDVREETERYWAREINTSIESROMHCYEELHREEOEVTME
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
rail_fence
rail_fence
transposition
{ "type": "integer", "value": 7 }
intermediate
en
171
171
cipher_museum
2.0
public
null
null
fractionated-morse-267
LCSLGITAAYCSN
LCSLGITAAYCSN
THE TRAP IS SET
fractionated_morse
fractionated_morse
fractionation
{ "type": "keyword", "value": "CRYPTIC" }
advanced
en
13
13
cipher_museum
0.2
public
null
null
cda-0014643
12 42 45 44 15 21 34 42 13 15 52 34 42 25 43 34 33 31 54 52 23 15 33 44 23 15 25 15 54 43 35 11 13 15 24 43 43 32 11 31 31
12 42 45 44 15 21 34 42 13 15 52 34 42 25 43 34 33 31 54 52 23 15 33 44 23 15 25 15 54 43 35 11 13 15 24 43 43 32 11 31 31
BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL
polybius
polybius
null
{}
medium
en
41
41
synthetic_educational
null
null
[ "pair_decode", "frequency_analysis" ]
Polybius square: 5×5 grid maps letters to two-digit row-column pairs.
cardano-autokey-v2-0095
FALGKXWLVULACGWSAVIZRGXHEZJPSBOBTMBALTALMFVKBIRVRNIAKSNPGERTJPBXGVTNQJXVETABGMNVAL
FALGKXWLVULACGWSAVIZRGXHEZJPSBOBTMBALTALMFVKBIRVRNIAKSNPGERTJPBXGVTNQJXVETABGMNVAL
THE CIPHER DISK WAS INVENTED BY LEON BATTISTA ALBERTI A RENAISSANCE ARCHITECT AND GREAT HUMANIST
cardano_autokey
cardano_autokey
polyalphabetic
{ "type": "keyword", "value": "MILAN" }
advanced
en
82
82
cipher_museum
2.0
public
null
null
porta-v2-0049
AUYLFWRVMGMOSRKUJRMAHBDKLNPITZOGXMMGJRMZPJAUYYTEAYYMPRHSKJOQXNBWLWUBBW
AUYLFWRVMGMOSRKUJRMAHBDKLNPITZOGXMMGJRMZPJAUYYTEAYYMPRHSKJOQXNBWLWUBBW
THE QUALITY OF MERCY IS NOT STRAINED IT DROPPETH AS THE GENTLE RAIN FROM HEAVEN ABOVE
porta
porta
polyalphabetic
{ "type": "keyword", "value": "NAPLES" }
intermediate
en
70
70
cipher_museum
2.0
public
null
null
nihilist-v3-0350
105 26 80 65 26 63 67 59 53 24 104 38 60 35 63 63 29 80 53 36 96 59 48 72 35 97 65 48 45 26 77 29 46 33 24 63 29 68 66 45 96 26 50 35 63 74 49 59 53 36 87 47 89 35 37 74 27 59 33 57 84 59 47 55 45 63 45 57 45 24 103 59 56
105 26 80 65 26 63 67 59 53 24 104 38 60 35 63 63 29 80 53 36 96 59 48 72 35 97 65 48 45 26 77 29 46 33 24 63 29 68 66 45 96 26 50 35 63 74 49 59 53 36 87 47 89 35 37 74 27 59 33 57 84 59 47 55 45 63 45 57 45 24 103 59 56
WATSON WE HAVE FOUND THE STRUCTURE OF DNA AND IT IS A DOUBLE HELIX OF BREATHTAKING BEAUTY
nihilist
nihilist
fractionation
{ "polybius": "NARODNAYA", "keyword": "VOLYA" }
advanced
en
149
221
cipher_museum
2.0
public
null
null
porta-v3-0516
XRTVLBNNPUFEJIMKHKTWKWSMBTMQMCSYPVKMISDPVYMMXQLZKMBOVESWINTWJDQXUOBTVWLSMLWXJPRYLXSNHNSTENWENMKWILNVVZRIVTSAFXCNCAUTNTAEZPKRTKTYHJXVWNNTHTLWENBZSXOXIYKOIIPQXMEF
XRTVLBNNPUFEJIMKHKTWKWSMBTMQMCSYPVKMISDPVYMMXQLZKMBOVESWINTWJDQXUOBTVWLSMLWXJPRYLXSNHNSTENWENMKWILNVVZRIVTSAFXCNCAUTNTAEZPKRTKTYHJXVWNNTHTLWENBZSXOXIYKOIIPQXMEF
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
porta
porta
polyalphabetic
{ "type": "keyword", "value": "FLORENT" }
intermediate
en
160
160
cipher_museum
2.0
public
null
null
purple-010
XQXHITSWSSHXRXRBDMAMD
XQXHITSWSSHXRXRBDMAMD
THE PACKAGE IS DELIVERED
purple
purple
machine
{ "type": "seed", "value": "PURPLE" }
expert
en
21
21
cipher_museum
0.2
public
null
null
sigaba-098
KAFBXJBWGEDIVFFVKFAPNSKVQSPUVYYDEYUSXTZBULWQD
KAFBXJBWGEDIVFFVKFAPNSKVQSPUVYYDEYUSXTZBULWQD
THE REPORTS OF MY DEATH HAVE BEEN GREATLY EXAGGERATED
sigaba
sigaba
machine
{ "type": "seed", "value": "CIPHER" }
expert
en
45
45
cipher_museum
0.2
public
null
null
cda-0021123
RRFZQ ZWQDR YHYMQ IJTAV XXZLS TKLNA HCKWL HCGCE BVLMD JPYVA NHBIT ZXNXF MZMJR MBRPV HEKKP WMMOC GKSAL QFUQC JVIZT ZMKYS BBTZR CUXCN UCJNV ZMSLO JCIHF GBNQS NKPCD ZXQCI FSXNI QUHGP GNTOE
RRFZQ ZWQDR YHYMQ IJTAV XXZLS TKLNA HCKWL HCGCE BVLMD JPYVA NHBIT ZXNXF MZMJR MBRPV HEKKP WMMOC GKSAL QFUQC JVIZT ZMKYS BBTZR CUXCN UCJNV ZMSLO JCIHF GBNQS NKPCD ZXQCI FSXNI QUHGP GNTOE
THE INDEX OF COINCIDENCE IS A USEFUL CLUE GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE ATBASH ENCODES BY REVERSING THE ALPHABET
vernam
vernam
null
{}
hard
en
155
155
synthetic_educational
null
null
[ "key_reuse_attack", "information_theoretic_proof" ]
Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP.
pigpen-v3-0053
┐ ┬ ⌐ ╲• ┼ ┼• ┤• ╳ ▽ ┼ ╳ ┴ ┼ ┌ ╱ ┼• ╳ ┤• ┤ ┐ ┌ ┬ ╳ ╲ ⌐ ┐ ├ ⌐• ┤• ┬ ┼• ┌• ⌐ ╱ ¬• ⌐• ┤• ┼• ┼ ╲ ⌐ ╲ ╳ ┬ ┼ ┴ ┤• ┼• ┬ ┤• ├• ├• ┼ ┐• ┐ ¬ ┬ ⌐ ┐• ├ ╳ ┤• ┤• ┴• ┬ ┼ ⌐ ╲• ▽ ┤ ┐ ┐• ┼
┐ ┬ ⌐ ╲• ┼ ┼• ┤• ╳ ▽ ┼ ╳ ┴ ┼ ┌ ╱ ┼• ╳ ┤• ┤ ┐ ┌ ┬ ╳ ╲ ⌐ ┐ ├ ⌐• ┤• ┬ ┼• ┌• ⌐ ╱ ¬• ⌐• ┤• ┼• ┼ ╲ ⌐ ╲ ╳ ┬ ┼ ┴ ┤• ┼• ┬ ┤• ├• ├• ┼ ┐• ┐ ¬ ┬ ⌐ ┐• ├ ╳ ┤• ┤• ┴• ┬ ┼ ⌐ ╲• ▽ ┤ ┐ ┐• ┼
I HAVE NOT YET BEGUN TO FIGHT SAID JOHN PAUL JONES AS THE BONHOMME RICHARD TOOK HEAVY FIRE
pigpen
pigpen
substitution
{ "type": "none", "value": null }
beginner
en
98
170
cipher_museum
2.0
public
null
null
adfgx-v3-0429
ADFGADGDFXAGGDFXDXFDADGFFDDDAXDAADFDDGAXXDFFXDAAADXAXAAAXDFDXADDAGGGGFAFDGGFDDAFGDAGGXXDFGDGDFFDGXGFDGXDDDGADDXFGGXAXGAAXAGFAXAGGXGGFXGGGGGGGG
ADFGADGDFXAGGDFXDXFDADGFFDDDAXDAADFDDGAXXDFFXDAAADXAXAAAXDFDXADDAGGGGFAFDGGFDDAFGDAGGXXDFGDGDFFDGXGFDGXDDDGADDXFGGXAXGAAXAGFAXAGGXGGFXGGGGGGGG
IT WAS A BRIGHT COLD DAY IN APRIL AND THE CLOCKS WERE STRIKING THIRTEEN ACROSS THE CITY
adfgx
adfgx
fractionation
{ "polybius": "WISDOM", "columnar": "COURAGE" }
advanced
en
142
142
cipher_museum
2.0
public
null
null
typex-068
USXZTWPFVBXD
USXZTWPFVBXD
HOLD POSITION
typex
typex
machine
{ "type": "keyword", "value": "BLETCHLEY" }
expert
en
12
12
cipher_museum
0.2
public
null
null
cda-0020127
68 66 80 68 29 61 65 68 80 82 29 66 66 69 69 57 61 36 69 59 57 11 61 36 69 89 50 66 61 80 82 68 61 69 29 50 29 25
68 66 80 68 29 61 65 68 80 82 29 66 66 69 69 57 61 36 69 59 57 11 61 36 69 89 50 66 61 80 82 68 61 69 29 50 29 25
A TRANSPARENT TOOL SHOULD SHOW ITS REASONING
wallis_cipher
wallis_cipher
null
{}
medium
en
38
38
synthetic_educational
null
null
[ "number_substitution_decode", "frequency_analysis" ]
Wallis cipher: each letter mapped to a unique two-digit number from a fixed table.
sigaba-v2-0105
GXFEVFZFHZWXQQSPZDDPBBRJXPTOQNKSBBRRDALFVCQMPRXAGBQTLLMZUQQCTIMWCPCSZQTIUITQKRUFVSVV
GXFEVFZFHZWXQQSPZDDPBBRJXPTOQNKSBBRRDALFVCQMPRXAGBQTLLMZUQQCTIMWCPCSZQTIUITQKRUFVSVV
THE REGIMENT WILL HOLD ITS POSITION UNTIL REINFORCEMENTS ARRIVE FROM THE EASTERN COMMAND POST HERE
sigaba
sigaba
machine
{ "type": "seed", "value": "ECMMARK" }
expert
en
84
84
cipher_museum
2.0
public
null
null
trifid-v2-0013
XXL+MGNMKCXAE
XXL+MGNMKCXAE
STAY THE COURSE
trifid
trifid
fractionation
{ "type": "keyword", "value": "PALACE" }
advanced
en
13
13
cipher_museum
2.0
public
null
null
chinese-telegraph-v2-0311
5814 4427 5488 4614 4154 4871 4871 4489 4680 4550 4614 5563 5060 4998 5563 4614 4427 4216 4427 4154 4298 4614 4427 5488 4154 4998 4361 5814 4427 5488 4614 4154 4871 4871 4489 4680 4550 4614 5563 5060 4998 5563 4614 4427 4871 4154 4998 4361 4680 4998 4550 4550 5397 5060 5645 4998 4361 5488 4154 4998 4361 4680 4998 5563 ...
5814 4427 5488 4614 4154 4871 4871 4489 4680 4550 4614 5563 5060 4998 5563 4614 4427 4216 4427 4154 4298 4614 4427 5488 4154 4998 4361 5814 4427 5488 4614 4154 4871 4871 4489 4680 4550 4614 5563 5060 4998 5563 4614 4427 4871 4154 4998 4361 4680 4998 4550 4550 5397 5060 5645 4998 4361 5488 4154 4998 4361 4680 4998 5563 ...
WE SHALL FIGHT ON THE BEACHES AND WE SHALL FIGHT ON THE LANDING GROUNDS AND IN THE FIELDS
chinese_telegraph
chinese_telegraph
codebook
{ "type": "additive", "value": "14142" }
expert
en
288
359
cipher_museum
2.0
public
null
null
cda-0021438
BAAB ABAA AAAA AAAA BBAA BAAA BABB BAAB BABB AAAB ABAA ABAA BAAB AAAA BBAB ABBA AAAA BAAB AAAA BBBA AABB BAAB AABA AAAB AAAB BAAA AAAB AAAA AAAB AAAA BAAA AAAA AAAB BAAA ABBA AABA AABA BAAA BAAB AABA BAAB AAAB AABA AAAB AAAB BABA AABA AABA ABAA ABBB ABBA BBAA BBBA ABAB AAAB BAAB BAAA ABBA AABB AABA ABAA ABAA BABA ABBB ...
BAAB ABAA AAAA AAAA BBAA BAAA BABB BAAB BABB AAAB ABAA ABAA BAAB AAAA BBAB ABBA AAAA BAAB AAAA BBBA AABB BAAB AABA AAAB AAAB BAAA AAAB AAAA AAAB AAAA BAAA AAAA AAAB BAAA ABBA AABA AABA BAAA BAAB AABA BAAB AAAB AABA AAAB AAAB BABA AABA AABA ABAA ABBB ABBA BBAA BBBA ABAB AAAB BAAB BAAA ABBA AABB AABA ABAA ABAA BABA ABBB ...
TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION THE BEST LESSONS SHOW WHERE THE METHOD FAILS
bacon_cipher
bacon_cipher
null
{}
hard
en
460
460
synthetic_educational
null
null
[ "five_bit_decode", "ab_frequency_analysis" ]
Bacon's biliteral cipher: each letter encoded as 5-bit A/B string.
nomenclator-v3-0110
60 07 01 20 05 19 08 15 12 04 06 09 18 13
60 07 01 20 05 19 08 15 12 04 06 09 18 13
THE GATES HOLD FIRM
nomenclator
nomenclator
nomenclator
{ "type": "seed", "value": "PALACE" }
expert
en
28
41
cipher_museum
2.0
public
null
null
copiale-045
K6 I8 W2 B6 S6 U8 L7 O0 K9 S5 R5 F9 N8 R2 O1 V9 U7 K7 Q2 W3 Z3 E9 R3 H1 V5 T6 C6 R3 Z6 S1 E8 U5 G7 O0 W8 C9 V9 O5 K0 O5 Z6 S6 I5 O2 C5 M7
K6 I8 W2 B6 S6 U8 L7 O0 K9 S5 R5 F9 N8 R2 O1 V9 U7 K7 Q2 W3 Z3 E9 R3 H1 V5 T6 C6 R3 Z6 S1 E8 U5 G7 O0 W8 C9 V9 O5 K0 O5 Z6 S6 I5 O2 C5 M7
I HAVE NOT YET BEGUN TO FIGHT SAID THE CAPTAIN TO THE CREW
copiale
copiale
substitution
{ "type": "keyword", "value": "COPIALE" }
advanced
en
92
137
cipher_museum
0.2
public
null
null
fractionated-morse-v2-0428
JWPLGVSWAFXJWPLGVSWAFXOANINBBIEFSAMHAFSALAXFWNIDWNLNFTXEFSEMDAGSAPOWBLKVBABIFBXEDAGWWNIDWNL
JWPLGVSWAFXJWPLGVSWAFXOANINBBIEFSAMHAFSALAXFWNIDWNLNFTXEFSEMDAGSAPOWBLKVBABIFBXEDAGWWNIDWNL
GOOD NIGHT GOOD NIGHT PARTING IS SUCH SWEET SORROW THAT I SHALL SAY GOOD NIGHT TILL MORROW
fractionated_morse
fractionated_morse
fractionation
{ "type": "keyword", "value": "FREEDOM" }
advanced
en
91
91
cipher_museum
2.0
public
null
null
m209-v2-0462
SQPEQABZZIWKWPLMIVNZQPTMDZDPXZMQKJLYYQWDSCHULANRHWKVQIKCOLNDXZWMJRLUUDMYQFHPNMVQYJM
SQPEQABZZIWKWPLMIVNZQPTMDZDPXZMQKJLYYQWDSCHULANRHWKVQIKCOLNDXZWMJRLUUDMYQFHPNMVQYJM
KNOWLEDGE WITHOUT WISDOM IS A DANGEROUS THING AND WISDOM WITHOUT COURAGE IS ULTIMATELY WORTHLESS
m209
m209
machine
{ "type": "seed", "value": "VICTORY" }
expert
en
83
83
cipher_museum
2.0
public
null
null
adfgx-v2-0604
DGGAAAFGGGXDFDAAFAADDDXGXFDXGXGAFDFD
DGGAAAFGGGXDFDAAFAADDDXGXFDXGXGAFDFD
CONTACT HAS BEEN MADE
adfgx
adfgx
fractionation
{ "polybius": "KAISER", "columnar": "BERLIN" }
advanced
en
36
36
cipher_museum
2.0
public
null
null
solitaire-v3-0237
OUEKJISSNCGQMTKGSIUH
OUEKJISSNCGQMTKGSIUH
THE REDCOATS ARE COMING
solitaire
solitaire
stream
{ "type": "passphrase", "value": "PONTIFEX" }
expert
en
20
20
cipher_museum
2.0
public
null
null
chaocipher-v2-0310
ELAJHBWZPAQLSYERYMSKYUKARSFWMQREGCTQCKCOCXYLBGZGWUDFEPPPJVFKEOAQUGJF
ELAJHBWZPAQLSYERYMSKYUKARSFWMQREGCTQCKCOCXYLBGZGWUDFEPPPJVFKEOAQUGJF
NEVER IN THE FIELD OF HUMAN CONFLICT WAS SO MUCH OWED BY SO MANY TO SO FEW BRAVE SOULS
chaocipher
chaocipher
machine
{ "type": "keyword", "value": "FREEDOM" }
advanced
en
68
68
cipher_museum
2.0
public
null
null
fractionated-morse-235
CUTEVLMTHCIDQSBMRVNTACRCODSCUTEVLHDLGTMCNSBGCICOBCIAQSKQCTHQDQSDRCBNM
CUTEVLMTHCIDQSBMRVNTACRCODSCUTEVLHDLGTMCNSBGCICOBCIAQSKQCTHQDQSDRCBNM
EVERY SECRET HAS A KEEPER AND EVERY CODE HAS A BREAKER WHO SEEKS THE TRUTH
fractionated_morse
fractionated_morse
fractionation
{ "type": "keyword", "value": "MUSEUM" }
advanced
en
69
69
cipher_museum
0.2
public
null
null
sigaba-v3-0039
GXFTQVMENNYWATTXWNURL
GXFTQVMENNYWATTXWNURL
THE EXPERIMENT CONFIRMS
sigaba
sigaba
machine
{ "type": "seed", "value": "ECMMARK" }
expert
en
21
21
cipher_museum
2.0
public
null
null
nihilist-v3-0140
76 36 28 37 60 85 77 84 29 29 35 40 65 76 76 46 56 29 60 87
76 36 28 37 60 85 77 84 29 29 35 40 65 76 76 46 56 29 60 87
STEAM POWER TRANSFORMS
nihilist
nihilist
fractionation
{ "polybius": "LIBERTY", "keyword": "FREEDOM" }
advanced
en
40
59
cipher_museum
2.0
public
null
null
argenti-v2-0346
46 29 57 11 88 75 77 63 44 33 18 39 65 33 71 69 38 39 44 57 71 21 87 42 28 65 11 38 28 68 25 24 29 27 46 11 33 63 65 33 28 18 41 64 39 44 49 87 61 69 38 23 75 20 11 37 29 77 88 28 27 16 71 42 59 20 11 63 86 67 87 77 75 39 64 61 28 27 25 13 44 71 42 65
46 29 57 11 88 75 77 63 44 33 18 39 65 33 71 69 38 39 44 57 71 21 87 42 28 65 11 38 28 68 25 24 29 27 46 11 33 63 65 33 28 18 41 64 39 44 49 87 61 69 38 23 75 20 11 37 29 77 88 28 27 16 71 42 59 20 11 63 86 67 87 77 75 39 64 61 28 27 25 13 44 71 42 65
CODED TRANSMISSION INDICATES ENEMY FORCES ASSEMBLING ALONG THE BORDER WITH HEAVY ARTILLERY UNITS
argenti
argenti
nomenclator
{ "type": "seed", "value": "VATICAN" }
expert
en
168
251
cipher_museum
2.0
public
null
null
m209-v2-0250
JSLOCUPLZPSUXXSZYAALVHZZXORSZXANDOIYZYWLSFPZQUXREJLCZYXZTQZTCCIAMJVDKXRZQHNDPEZLYVKVKTORKDKYCPPCZNKMDJABDKCCQFUJBMOXVNRUPXLWYCABZOKTPQMMYKDLUQQXPNJVLHBAXBIMJAAAYYYA
JSLOCUPLZPSUXXSZYAALVHZZXORSZXANDOIYZYWLSFPZQUXREJLCZYXZTQZTCCIAMJVDKXRZQHNDPEZLYVKVKTORKDKYCPPCZNKMDJABDKCCQFUJBMOXVNRUPXLWYCABZOKTPQMMYKDLUQQXPNJVLHBAXBIMJAAAYYYA
ULTRA INTELLIGENCE DERIVED FROM DECRYPTED GERMAN ENIGMA TRAFFIC INDICATES THAT ENEMY PANZER DIVISIONS ARE CONCENTRATED AT CALAIS CONFIRMING THE DECEPTION OPERATION FORTITUDE HAS SUCCEEDED
m209
m209
machine
{ "type": "seed", "value": "FREEDOM" }
expert
en
164
164
cipher_museum
2.0
public
null
null
trifid-v2-0388
RMOARFXC+WEFLJL+BMKMN
RMOARFXC+WEFLJL+BMKMN
BRIDGE DESTROYED AT DAWN
trifid
trifid
fractionation
{ "type": "keyword", "value": "FREEDOM" }
advanced
en
21
21
cipher_museum
2.0
public
null
null
copiale-v2-0039
B1 C3 K7 C5 O5 T1 C1 A4 I4 Y0 I3 J9 O1 Q1 N6 A3 V4 O2 N3 C4 H7 B5 K0 O8
B1 C3 K7 C5 O5 T1 C1 A4 I4 Y0 I3 J9 O1 Q1 N6 A3 V4 O2 N3 C4 H7 B5 K0 O8
TORPEDO AWAY ALL HANDS BRACE
copiale
copiale
substitution
{ "type": "keyword", "value": "MASONIC" }
advanced
en
48
71
cipher_museum
2.0
public
null
null
gronsfeld-v2-0995
NFVVTLNMPUHZKTGWFIEMWFIEMIVBVPLSMKAUPXGIJFBJMDBZKAHDBWISMGDMNVVVPLOMZBNBTGBOBBUELFXUNYPUVPLOWTBOXQNTISQPOAPWWZLBZUBOFKNIZIWHZLTWWVKJVIIYNAQCYCZGBOSMPIYFINZLBLAQUUPGNPFTF
NFVVTLNMPUHZKTGWFIEMWFIEMIVBVPLSMKAUPXGIJFBJMDBZKAHDBWISMGDMNVVVPLOMZBNBTGBOBBUELFXUNYPUVPLOWTBOXQNTISQPOAPWWZLBZUBOFKNIZIWHZLTWWVKJVIIYNAQCYCZGBOSMPIYFINZLBLAQUUPGNPFTF
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
gronsfeld
gronsfeld
polyalphabetic
{ "type": "numeric", "value": "71828" }
intermediate
en
169
169
cipher_museum
2.0
public
null
null
chaocipher-132
MXRUHJDFNWJPTWMT
MXRUHJDFNWJPTWMT
CIPHER KEY CHANGED
chaocipher
chaocipher
machine
{ "type": "keyword", "value": "SECRET" }
advanced
en
16
16
cipher_museum
0.2
public
null
null
kryptos-099
IFMNGVLWGKBBWNSHHJWHDKRNSHHFGKHTOQYDAVDCDJU
IFMNGVLWGKBBWNSHHJWHDKRNSHHFGKHTOQYDAVDCDJU
FORTUNE FAVORS THE BOLD AND THE BRAVE WHO DARE TO ACT
kryptos
kryptos
polyalphabetic
{ "type": "keyword", "value": "PALIMPSEST" }
advanced
en
43
43
cipher_museum
0.2
public
null
null
affine-v2-0773
ZFGNG RNHHLBN UFKKFJH
ZFGNG RNHHLBN UFKKFJH
CODED MESSAGE FOLLOWS
affine
affine
substitution
{ "a": 7, "b": 11 }
beginner
en
19
21
cipher_museum
2.0
public
null
null
rail-fence-v2-0155
PVASITGCINTEIONRRCBYE
PVASITGCINTEIONRRCBYE
PATIENCE BRINGS VICTORY
rail_fence
rail_fence
transposition
{ "type": "integer", "value": 8 }
intermediate
en
21
21
cipher_museum
2.0
public
null
null
cda-0014706
INDEX OFCOI NCIDE NCEMZ ASURX SLETT ERFRE QUENX YDIST RIBUT IONCE RTAIZ LYCDX
INDEX OFCOI NCIDE NCEMZ ASURX SLETT ERFRE QUENX YDIST RIBUT IONCE RTAIZ LYCDX
INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION CERTAINLY
commercial_code
commercial_code
null
{}
medium
en
65
65
synthetic_educational
null
null
[ "codebook_frequency", "five_letter_group_analysis" ]
Commercial code: five-letter groups from a codebook, often ending in X or Z.
arnold-andre-v3-0033
13.1.1 14.5.5 14.1.1 14.3.4 14.3.1 14.1.5 14.1.5 15.1.1 13.1.1 14.1.4 14.3.5 14.3.5 14.1.4 14.3.2 14.1.5 15.1.1
13.1.1 14.5.5 14.1.1 14.3.4 14.3.1 14.1.5 14.1.5 15.1.1 13.1.1 14.1.4 14.3.5 14.3.5 14.1.4 14.3.2 14.1.5 15.1.1
YANKEE DOODLE
arnold_andre
arnold_andre
codebook
{ "type": "none", "value": null }
expert
en
96
111
cipher_museum
2.0
public
null
null