id stringlengths 7 52 | text stringlengths 6 2.11k | ciphertext stringlengths 6 2.11k | plaintext stringlengths 6 282 | label stringclasses 81
values | cipher stringclasses 81
values | cipher_family stringclasses 13
values | key unknown | difficulty stringclasses 7
values | language stringclasses 8
values | text_length int64 6 1.09k | length int64 6 1.28k | source stringclasses 2
values | dataset_version stringclasses 2
values | split stringclasses 1
value | attack_methods listlengths 0 3 ⌀ | educational_note stringclasses 32
values |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
kryptos-v2-0461 | DUTESJYLFOZQCTAEUWEFWLBFIVWBNVDIXDTGKPFNFJUXDFDETMMFMQOKNHBREOKWXOGJAKZLWVSFKDG | DUTESJYLFOZQCTAEUWEFWLBFIVWBNVDIXDTGKPFNFJUXDFDETMMFMQOKNHBREOKWXOGJAKZLWVSFKDG | THE PRICE OF LIBERTY IS ETERNAL VIGILANCE AND THE WILL TO DEFEND IT AGAINST ALL FOES AND THREATS | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "SANBORN"
} | advanced | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-v2-0115 | 76104162220762219129211601731342538314113235647653120222041742589257482828288731838323202976425172384122042041052320291689207420007222221328762032222128821162041287620442092712221763207320282032220862356910523425112970861523262070203 | 76104162220762219129211601731342538314113235647653120222041742589257482828288731838323202976425172384122042041052320291689207420007222221328762032222128821162041287620442092712221763207320282032220862356910523425112970861523262070203 | YESTERDAY DECEMBER SEVENTH NINETEEN FORTY ONE A DATE WHICH WILL LIVE IN INFAMY THE UNITED STATES OF AMERICA WAS SUDDENLY AND DELIBERATELY ATTACKED BY NAVAL AND AIR FORCES OF THE EMPIRE OF JAPAN | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "SENTORISCA"
} | advanced | en | 233 | 233 | cipher_museum | 2.0 | public | null | null |
cda-0018712 | SHAII NQOKE EDYQO KEEDY RAIIN QOKED YSHAL DAINY LKAII NCHEO LQOKE DYSHE EDYCT AIINC HOLDA IINQO KEEDY DAIIN OTEDY LKAII NOXED OKALO KALSH ORYKC HEOLY PCHOL CHEDA LDAIN YCHEO LYKCH EOLOK EEDYC HOLOR ORDAI INQOK EEDYD ALYTE DYRAI INOTE DYSHE EDYCH EDYSH ARALD AINYO TAIIN OKEED YOKSH YDALS HARAL OKSHY OKSHY OKEED Y | SHAII NQOKE EDYQO KEEDY RAIIN QOKED YSHAL DAINY LKAII NCHEO LQOKE DYSHE EDYCT AIINC HOLDA IINQO KEEDY DAIIN OTEDY LKAII NOXED OKALO KALSH ORYKC HEOLY PCHOL CHEDA LDAIN YCHEO LYKCH EOLOK EEDYC HOLOR ORDAI INQOK EEDYD ALYTE DYRAI INOTE DYSHE EDYCH EDYSH ARALD AINYO TAIIN OKEED YOKSH YDALS HARAL OKSHY OKSHY OKEED Y | AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | voynich_render | voynich_render | null | {} | hard | en | 261 | 261 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
cda-0019425 | daily other unite basis light enter three right alert notes seeks parts often scout inner three inner often night above place parts leads incur eight | daily other unite basis light enter three right alert notes seeks parts often scout inner three inner often night above place parts leads incur eight | DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER | 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. |
kl7-v3-0272 | EXPIZQAKEUIRJFZLZMIKSLQPIUQMEMMVQCQGHHXPUWGJPSUOOGJTFKEPMIQYVPEUBDQAZZIGYL | EXPIZQAKEUIRJFZLZMIKSLQPIUQMEMMVQCQGHHXPUWGJPSUOOGJTFKEPMIQYVPEUBDQAZZIGYL | GENERAL PATTON LED THE THIRD ARMY IN A DARING SWEEP ACROSS FRANCE FOLLOWING THE BREAKOUT | kl7 | kl7 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
copiale-v2-0026 | K6 R8 R8 C5 I3 X0 X7 T0 C5 C3 I4 T1 L5 Z1 T1 U6 I3 | K6 R8 R8 C5 I3 X0 X7 T0 C5 C3 I4 T1 L5 Z1 T1 U6 I3 | KEEP YOUR POWDER DRY | copiale | copiale | substitution | {
"type": "keyword",
"value": "MASONIC"
} | advanced | en | 34 | 50 | cipher_museum | 2.0 | public | null | null |
chaocipher-v3-0169 | PXKHNBIACSJVNQTKPEJEGYDLDNFTFSZDPBQLZHIRFCYVFLGKXJBGJIIHIATFDFOWKGTBXHRGSRI | PXKHNBIACSJVNQTKPEJEGYDLDNFTFSZDPBQLZHIRFCYVFLGKXJBGJIIHIATFDFOWKGTBXHRGSRI | THE BATTLE OF GETTYSBURG LASTED THREE DAYS AND COST OVER FIFTY THOUSAND CASUALTIES TOTAL | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
morse-code-v3-0078 | - .... . / -.. . .- -.. / -.. .-. --- .--. / .- .-.. .-.. --- .-- ... / .- --. . -. - ... / - --- / . -..- -.-. .... .- -. --. . / .. -. ..-. --- .-. -- .- - .. --- -. / .-- .. - .... --- ..- - / -- . . - .. -. --. / ..-. .- -.-. . / - --- / ..-. .- -.-. . / .. -. / .--. ..- -... .-.. .. -.-. | - .... . / -.. . .- -.. / -.. .-. --- .--. / .- .-.. .-.. --- .-- ... / .- --. . -. - ... / - --- / . -..- -.-. .... .- -. --. . / .. -. ..-. --- .-. -- .- - .. --- -. / .-- .. - .... --- ..- - / -- . . - .. -. --. / ..-. .- -.-. . / - --- / ..-. .- -.-. . / .. -. / .--. ..- -... .-.. .. -.-. | THE DEAD DROP ALLOWS AGENTS TO EXCHANGE INFORMATION WITHOUT MEETING FACE TO FACE IN PUBLIC | morse_code | morse_code | encoding | {
"type": "none",
"value": null
} | beginner | en | 204 | 293 | cipher_museum | 2.0 | public | null | null |
beaufort-v3-0900 | UXLBFJAKQKIMHXUWXANJKCLHHUUAVPLPRCWBWWLHUXJKCLZJNVALLHVLJWCQQBQAMWCUUAKLILC | UXLBFJAKQKIMHXUWXANJKCLHHUUAVPLPRCWBWWLHUXJKCLZJNVALLHVLJWCQQBQAMWCUUAKLILC | THE SPEED OF LIGHT IS THE ULTIMATE SPEED LIMIT IN THE UNIVERSE EINSTEIN DEMONSTRATED THIS | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "NEPTUNE"
} | intermediate | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
caesar-vf-0127 | SGD MZUHFZSNQ BGZQSR SGD RSZQR | SGD MZUHFZSNQ BGZQSR SGD RSZQR | THE NAVIGATOR CHARTS THE STARS | caesar | caesar | substitution | {
"type": "shift",
"value": 25
} | beginner | en | 26 | 30 | cipher_museum | 2.0 | public | null | null |
nomenclator-v2-0046 | 23 08 01 20 09 19 64 01 14 01 13 05 20 08 01 20 23 08 09 03 08 23 05 03 01 12 12 01 18 15 19 05 02 25 01 14 25 15 20 08 05 18 14 01 13 05 23 15 21 12 04 19 13 05 12 12 01 19 19 23 05 05 20 | 23 08 01 20 09 19 64 01 14 01 13 05 20 08 01 20 23 08 09 03 08 23 05 03 01 12 12 01 18 15 19 05 02 25 01 14 25 15 20 08 05 18 14 01 13 05 23 15 21 12 04 19 13 05 12 12 01 19 19 23 05 05 20 | WHAT IS IN A NAME THAT WHICH WE CALL A ROSE BY ANY OTHER NAME WOULD SMELL AS SWEET | nomenclator | nomenclator | nomenclator | {
"type": "none",
"value": null
} | expert | en | 126 | 188 | cipher_museum | 2.0 | public | null | null |
polybius-v2-0104 | 21 34 45 42 43 13 34 42 15 11 33 14 43 15 51 15 33 54 15 11 42 43 11 22 34 34 45 42 21 11 44 23 15 42 43 12 42 34 45 22 23 44 21 34 42 44 23 34 33 44 23 24 43 13 34 33 44 24 33 15 33 44 11 33 15 52 33 11 44 24 34 33 13 34 33 13 15 24 51 15 14 24 33 31 24 12 15 42 44 54 11 33 14 14 15 14 24 13 11 44 15 14 44 34 44 23 15... | 21 34 45 42 43 13 34 42 15 11 33 14 43 15 51 15 33 54 15 11 42 43 11 22 34 34 45 42 21 11 44 23 15 42 43 12 42 34 45 22 23 44 21 34 42 44 23 34 33 44 23 24 43 13 34 33 44 24 33 15 33 44 11 33 15 52 33 11 44 24 34 33 13 34 33 13 15 24 51 15 14 24 33 31 24 12 15 42 44 54 11 33 14 14 15 14 24 13 11 44 15 14 44 34 44 23 15... | FOURSCORE AND SEVEN YEARS AGO OUR FATHERS BROUGHT FORTH ON THIS CONTINENT A NEW NATION CONCEIVED IN LIBERTY AND DEDICATED TO THE PROPOSITION THAT ALL MEN ARE CREATED EQUAL | polybius | polybius | substitution | {
"type": "none",
"value": null
} | beginner | en | 286 | 428 | cipher_museum | 2.0 | public | null | null |
adfgx-v2-0536 | DXDXDFGGXDDXAXAXGGFFGFDFDXXDDAFFFXDFADFXDXDDAGGDAXFXAXDGDFDXDXDDFXAXGXDXGGFXAGAGGDDGDAFADFAGDAFFXFDFFGFDAGAXXDGDGFGGXDFAADXDXDDAXAFFGFGAGXDFADGXDGDDDGAA | DXDXDFGGXDDXAXAXGGFFGFDFDXXDDAFFFXDFADFXDXDDAGGDAXFXAXDGDFDXDXDDFXAXGXDXGGFXAGAGGDDGDAFADFAGDAFFXFDFFGFDAGAXXDGDGFGGXDFAADXDXDDAXAFFGFGAGXDFADGXDGDDDGAA | BLESSED ARE THE PURE IN HEART FOR THEY SHALL SEE GOD AND BLESSED ARE THE PEACEMAKERS AMONG US | adfgx | adfgx | fractionation | {
"polybius": "WISDOM",
"columnar": "COURAGE"
} | advanced | en | 152 | 152 | cipher_museum | 2.0 | public | null | null |
m209-v3-0085 | LXXMNKXNJPQLBZSAYDJZBJPHVXLQUJAALLCLYJDHKUYDORLJTKJMWPQBKZMXKZLJZALQNVAKKEIYL | LXXMNKXNJPQLBZSAYDJZBJPHVXLQUJAALLCLYJDHKUYDORLJTKJMWPQBKZMXKZLJZALQNVAKKEIYL | THE POWERS NOT DELEGATED TO THE UNITED STATES BY THE CONSTITUTION ARE RESERVED TO THE STATES | m209 | m209 | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
kl7-v2-0337 | DSWJBMIRFVPCDCNQUXBIAQLFZOCDDGINGMEFEZJLGVMYQGPVLMJQAKKUOXKPLTGAYNMJGMOKWTKHTUIZE | DSWJBMIRFVPCDCNQUXBIAQLFZOCDDGINGMEFEZJLGVMYQGPVLMJQAKKUOXKPLTGAYNMJGMOKWTKHTUIZE | FREQUENCY ANALYSIS EXPLOITS THE FACT THAT CERTAIN LETTERS APPEAR FAR MORE OFTEN IN ENGLISH TEXT | kl7 | kl7 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
argenti-161 | 21 61 58 40 53 11 62 64 79 28 26 46 74 38 50 53 45 13 11 30 18 12 21 40 86 46 24 53 38 26 46 74 88 45 28 71 49 79 11 18 53 74 50 21 13 70 46 | 21 61 58 40 53 11 62 64 79 28 26 46 74 38 50 53 45 13 11 30 18 12 21 40 86 46 24 53 38 26 46 74 88 45 28 71 49 79 11 18 53 74 50 21 13 70 46 | ASK NOT WHAT YOUR COUNTRY CAN DO FOR YOU BUT WHAT YOU CAN DO | argenti | argenti | nomenclator | {
"type": "seed",
"value": "SECRET"
} | expert | en | 94 | 140 | cipher_museum | 0.2 | public | null | null |
confederate-vigenere-v3-0500 | POKECJMPSCAWCZGHZLOKMCNNWPIDQRVCLGGVAGCCZKGUILPJQQNKRPJCPTHEYKMHABRLEBLUMY | POKECJMPSCAWCZGHZLOKMCNNWPIDQRVCLGGVAGCCZKGUILPJQQNKRPJCPTHEYKMHABRLEBLUMY | NO PERSON SHALL BE HELD TO ANSWER FOR A CAPITAL CRIME UNLESS ON PRESENTMENT OF A GRAND JURY | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "CAVALRY"
} | intermediate | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
vic-v2-0103 | 82808680894218978089908692855808918680422618585928683649183186909004225808086689958791807929083868291080487878919380768387080897839084 | 82808680894218978089908692855808918680422618585928683649183186909004225808086689958791807929083868291080487878919380768387080897839084 | GENERAL ORDERS NUMBER ONE ALL COMMUNICATIONS SHALL BE ENCRYPTED USING THE APPROVED CIPHER DISK | vic | vic | substitution | {
"type": "keyword",
"value": "HOLLOW"
} | advanced | en | 134 | 134 | cipher_museum | 2.0 | public | null | null |
running-key-v3-0098 | PLWNAEPXPUSWTVKT | PLWNAEPXPUSWTVKT | THE GATES HOLD FIRM | running_key | running_key | polyalphabetic | {
"type": "text",
"value": "Churchill Dunkirk speech"
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
cda-0019091 | OIWL HVVQ CQRK RUNZ STAH CUSE JKZK XEBQ TXNG OBEB O | OIWL HVVQ CQRK RUNZ STAH CUSE JKZK XEBQ TXNG OBEB O | SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY | one_time_pad | one_time_pad | null | {} | medium | en | 41 | 41 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
affine-v3-0190 | BII UNADROD ERAO RA OBGJABIZYNK ZO GWN JOZGNK DGBGND BAN HZGZYNOD DJECNHG GR NXJBI UARGNHGZRO | BII UNADROD ERAO RA OBGJABIZYNK ZO GWN JOZGNK DGBGND BAN HZGZYNOD DJECNHG GR NXJBI UARGNHGZRO | ALL PERSONS BORN OR NATURALIZED IN THE UNITED STATES ARE CITIZENS SUBJECT TO EQUAL PROTECTION | affine | affine | substitution | {
"a": 3,
"b": 1
} | beginner | en | 79 | 93 | cipher_museum | 2.0 | public | null | null |
enigma-v2-0154 | ENAUPVGJFEJVZFFOF | ENAUPVGJFEJVZFFOF | COURAGE IN DARKNESS | enigma | enigma | machine | {
"type": "rotor_start",
"value": "DEF"
} | expert | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
scytale-v2-0582 | NISFATNMHBTXATIFSIAMOAAXVSTTTNLERRTXAIIHAGTNEDDXLNOEWSOCBMAXUPNCAICEOEWXNOOOIGOSMNNX | NISFATNMHBTXATIFSIAMOAAXVSTTTNLERRTXAIIHAGTNEDDXLNOEWSOCBMAXUPNCAICEOEWXNOOOIGOSMNNX | NAVAL UNITS IN POSITION OFF THE COAST AWAITING SIGNAL TO COMMENCE SHORE BOMBARDMENT AT DAWN | scytale | scytale | transposition | {
"type": "integer",
"value": 12
} | intermediate | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
rail-fence-v2-0575 | ITAETIWDNNSWSANAHSAESAGSSMAMEITINOOLHTADFOEFGSUOBOEITFETOWTRSFE | ITAETIWDNNSWSANAHSAESAGSSMAMEITINOOLHTADFOEFGSUOBOEITFETOWTRSFE | IT WAS THE BEST OF TIMES IT WAS AN AGE OF WISDOM AND AN AGE OF UTTER FOOLISHNESS | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 11
} | intermediate | en | 63 | 63 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v3-0120 | FRTJLVJLHHALAWLWD | FRTJLVJLHHALAWLWD | ARCHERS TO THE WALLS | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "FLORENCE"
} | advanced | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
polybius-v2-0114 | 11 21 44 15 42 11 33 45 33 15 41 45 24 51 34 13 11 31 15 53 35 15 42 24 15 33 13 15 34 21 44 23 15 24 33 15 21 21 24 13 24 15 33 13 54 34 21 44 23 15 43 45 12 43 24 43 44 24 33 22 21 15 14 15 42 11 31 22 34 51 15 42 33 32 15 33 44 54 34 45 11 42 15 13 11 31 31 15 14 45 35 34 33 44 34 14 15 31 24 12 15 42 11 44 15 34 33... | 11 21 44 15 42 11 33 45 33 15 41 45 24 51 34 13 11 31 15 53 35 15 42 24 15 33 13 15 34 21 44 23 15 24 33 15 21 21 24 13 24 15 33 13 54 34 21 44 23 15 43 45 12 43 24 43 44 24 33 22 21 15 14 15 42 11 31 22 34 51 15 42 33 32 15 33 44 54 34 45 11 42 15 13 11 31 31 15 14 45 35 34 33 44 34 14 15 31 24 12 15 42 11 44 15 34 33... | 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 | polybius | polybius | substitution | {
"type": "none",
"value": null
} | beginner | en | 300 | 449 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v2-0093 | FALTPCMKGKGQBGTIVFTMFYTGZVGLXTFKALRRAPHFGTHRUACLDNPGWQQLXQPHPTDZVKHODPUZRLDEUBAUBK | FALTPCMKGKGQBGTIVFTMFYTGZVGLXTFKALRRAPHFGTHRUACLDNPGWQQLXQPHPTDZVKHODPUZRLDEUBAUBK | THE PACKAGE CONTAINS BLUEPRINTS FOR THE NEW TORPEDO GUIDANCE SYSTEM DELIVER TO ADMIRAL SMITH NOW | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "MILAN"
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v2-0480 | ILELEFNOFEERFIOOIATNMTRTRTSRIAIBIRASITLRDPETNMMNLUAETGAOTSSEOILLATUCDEVNSS | ILELEFNOFEERFIOOIATNMTRTRTSRIAIBIRASITLRDPETNMMNLUAETGAOTSSEOILLATUCDEVNSS | LIBERTÉ ÉGALITÉ FRATERNITÉ OU LA MORT CES MOTS DÉFINISSENT LA REVOLUTION FRANÇAISE DE MIL SEPT | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "WARRIOR"
} | intermediate | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0018555 | 20 82 68 59 76 69 80 66 50 61 66 36 82 80 82 52 50 65 80 69 52 68 57 69 76 95 50 25 82 29 82 80 82 68 29 11 11 82 52 80 43 65 66 61 50 66 61 82 57 76 | 20 82 68 59 76 69 80 66 50 61 66 36 82 80 82 52 50 65 80 69 52 68 57 69 76 95 50 25 82 29 82 80 82 68 29 11 11 82 52 80 43 65 66 61 50 66 61 82 57 76 | BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF | wallis_cipher | wallis_cipher | null | {} | medium | en | 50 | 50 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
lorenz-v2-0121 | CARTHAGEMUSTBEDESTROYED | CARTHAGEMUSTBEDESTROYED | CARTHAGE MUST BE DESTROYED | lorenz | lorenz | machine | {
"type": "seed",
"value": "FISH"
} | expert | en | 23 | 23 | cipher_museum | 2.0 | public | null | null |
running-key-v3-0024 | YVYNAPRMSJLLLPW | YVYNAPRMSJLLLPW | THE WIND IS WITH US | running_key | running_key | polyalphabetic | {
"type": "text",
"value": "Gettysburg Address opening"
} | intermediate | en | 15 | 15 | cipher_museum | 2.0 | public | null | null |
affine-491 | FQLYTZ VW SELYJ | FQLYTZ VW SELYJ | CHANGE OF PLANS | affine | affine | substitution | {
"a": 23,
"b": 11
} | beginner | en | 13 | 15 | cipher_museum | 0.2 | public | null | null |
cda-0020157 | TRAC KHOU SEEA RLYD ELAY ENTE RTRO OPEX ACTC ROSS THRE EISS UEVE RSEE NTER SWIF TTUR NSUN DERD RIVE INCU REXT RASO UTHP HASE ARRA YTUR NSTR ACKE ARLY RADI O | TRAC KHOU SEEA RLYD ELAY ENTE RTRO OPEX ACTC ROSS THRE EISS UEVE RSEE NTER SWIF TTUR NSUN DERD RIVE INCU REXT RASO UTHP HASE ARRA YTUR NSTR ACKE ARLY RADI O | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS THE MESSAGE WAS HIDDEN BUT NOT SECURE | 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-0015873 | CRTTXRRNVIBKUFYYUMHDDKXEDAFIZGCXSSCZOHNKHROJPJUMFOSFMHHVSULDPGTPQXVUMDUFIZGFMVOWMORDUNXISDQRLQBDOUCRHYSGJQGOFLOJWNE | CRTTXRRNVIBKUFYYUMHDDKXEDAFIZGCXSSCZOHNKHROJPJUMFOSFMHHVSULDPGTPQXVUMDUFIZGFMVOWMORDUNXISDQRLQBDOUCRHYSGJQGOFLOJWNE | AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX | one_time_pad | one_time_pad | null | {} | hard | en | 115 | 115 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
bifid-de-046 | MTGTMCTQUX | MTGTMCTQUX | GOTT MIT UNS | bifid | bifid | fractionation | {
"type": "keyword",
"value": "CIPHER"
} | advanced | de | 10 | 10 | cipher_museum | 0.2 | public | null | null |
enigma-v2-0258 | RFOKVQUGJCNMJ | RFOKVQUGJCNMJ | THE PASS IS HELD | enigma | enigma | machine | {
"type": "rotor_start",
"value": "GHI"
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
playfair-v3-0679 | OWPNGWTCPOHZKZWZOBLZLBSFOPBO | OWPNGWTCPOHZKZWZOBLZLBSFOPBO | DONT FIRE TILL YOU SEE THE WHITES | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "WISDOM"
} | intermediate | en | 28 | 28 | cipher_museum | 2.0 | public | null | null |
cda-0012963 | ... ..- -... ... - .. - ..- - .. --- -. / -.-. .. .--. .... . .-. ... / -- .- .--. / . .- -.-. .... / .-.. . - - . .-. / - --- / .- / -.. .. ..-. ..-. . .-. . -. - / .-.. . - - . .-. / -.. .. ..-. ..-. .. . / .- -. -.. / .... . .-.. .-.. -- .- -. / .. -. - .-. --- -.. ..- -.-. . -.. / .--. ..- -... .-.. .. -.-. / -.- .... | ... ..- -... ... - .. - ..- - .. --- -. / -.-. .. .--. .... . .-. ... / -- .- .--. / . .- -.-. .... / .-.. . - - . .-. / - --- / .- / -.. .. ..-. ..-. . .-. . -. - / .-.. . - - . .-. / -.. .. ..-. ..-. .. . / .- -. -.. / .... . .-.. .-.. -- .- -. / .. -. - .-. --- -.. ..- -.-. . -.. / .--. ..- -... .-.. .. -.-. / -.- .... | SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX CERTAINLY | morse_code | morse_code | null | {} | hard | en | 126 | 126 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
babington-053 | ⟨w23⟩ ⟨w18⟩ ⟨w13⟩ ⟨a14⟩ ⟨w32⟩ ⟨w22⟩ ⟨w09⟩ ⟨w23⟩ ⟨w10⟩ ⟨w28⟩ ⟨w13⟩ ⟨a06⟩ ⟨w09⟩ ⟨w10⟩ ⟨n03⟩ | ⟨w23⟩ ⟨w18⟩ ⟨w13⟩ ⟨a14⟩ ⟨w32⟩ ⟨w22⟩ ⟨w09⟩ ⟨w23⟩ ⟨w10⟩ ⟨w28⟩ ⟨w13⟩ ⟨a06⟩ ⟨w09⟩ ⟨w10⟩ ⟨n03⟩ | OPERATION BEGINS | babington | babington | nomenclator | {
"type": "seed",
"value": "SECRET"
} | expert | en | 75 | 89 | cipher_museum | 0.2 | public | null | null |
cda-0016969 | .... .... .. ... . ..... .... .. . . .. .... ... . .. . . ..... ... ... . ... . ..... . ... .. .... ... ..... .. ... . ..... .... .. ..... .. .... .. .. .... .... .... . ..... .... ... .... .... . ..... ..... ... .... .... .. .... ... ... . . ..... ..... .. .... .. .. ..... ..... . . ... | .... .... .. ... . ..... .... .. . . .. .... ... . .. . . ..... ... ... . ... . ..... . ... .. .... ... ..... .. ... . ..... .... .. ..... .. .... .. .. .... .... .... . ..... .... ... .... .... . ..... ..... ... .... .... .. .... ... ... . . ..... ..... .. .... .. .. ..... ..... . . ... | THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | tap_code | tap_code | null | {} | hard | en | 182 | 182 | 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. |
fialka-v3-0193 | YAZXSPGESMLKRDTPXTXJRCQDNPICYJPAGLPSOMWLDVWJXOVDGDBESFAODKSDQLHMJTHRWHKSSHLYDVARRGX | YAZXSPGESMLKRDTPXTXJRCQDNPICYJPAGLPSOMWLDVWJXOVDGDBESFAODKSDQLHMJTHRWHKSSHLYDVARRGX | RSA ENCRYPTION RELIES ON THE MATHEMATICAL DIFFICULTY OF FACTORING THE PRODUCT OF TWO LARGE PRIMES | fialka | fialka | machine | {
"type": "seed",
"value": "KREMLIN"
} | expert | en | 83 | 83 | cipher_museum | 2.0 | public | null | null |
playfair-v3-0598 | RPDRDNFKIHHARIHOZCUROZ | RPDRDNFKIHHARIHOZCUROZ | THE TELEGRAPH TRANSMITS | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "TRIUMPH"
} | intermediate | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
cda-0017062 | GOODZ DUCAT IONAL TOOLX EXPLA INTHZ IRLIM ITSCB | GOODZ DUCAT IONAL TOOLX EXPLA INTHZ IRLIM ITSCB | GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS | 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. |
argenti-v2-0136 | 60 67 41 32 71 83 12 20 75 37 56 17 64 83 32 28 66 12 63 81 44 | 60 67 41 32 71 83 12 20 75 37 56 17 64 83 32 28 66 12 63 81 44 | BRIDGE DESTROYED AT DAWN | argenti | argenti | nomenclator | {
"type": "seed",
"value": "PAPAL"
} | expert | en | 42 | 62 | cipher_museum | 2.0 | public | null | null |
fialka-v3-0173 | FSGVFIAOPKHQYRERNEXATTKDCBCZUDUALKIFHJCRXOOOWEJXVZMSSAQZZIUJRBWOSKIRWZTSSCMKLMMEL | FSGVFIAOPKHQYRERNEXATTKDCBCZUDUALKIFHJCRXOOOWEJXVZMSSAQZZIUJRBWOSKIRWZTSSCMKLMMEL | DARWIN OBSERVED THAT SPECIES EVOLVE THROUGH NATURAL SELECTION OVER VAST SPANS OF GEOLOGIC TIME | fialka | fialka | machine | {
"type": "seed",
"value": "KREMLIN"
} | expert | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
running-key-003 | PLXLEVPSWLWZFGKIX | PLXLEVPSWLWZFGKIX | THE EAGLE HAS LANDED | running_key | running_key | polyalphabetic | {
"type": "text",
"value": "Declaration of Independence (opening)"
} | intermediate | en | 17 | 17 | cipher_museum | 0.2 | public | null | null |
morse-code-v3-0032 | - .... . / ... .... --- - / .... . .- .-. -.. / .-. --- ..- -. -.. / - .... . / .-- --- .-. .-.. -.. | - .... . / ... .... --- - / .... . .- .-. -.. / .-. --- ..- -. -.. / - .... . / .-- --- .-. .-.. -.. | THE SHOT HEARD ROUND THE WORLD | morse_code | morse_code | encoding | {
"type": "none",
"value": null
} | beginner | en | 71 | 100 | cipher_museum | 2.0 | public | null | null |
adfgvx-v3-0473 | GFFVDVDAFAFGFFAAFGADAGFADGGAFAFVVFVFGVVVDDDVVDGVAAGFAFDAGADAFFDAAADFAFFVGFDAVDGGVGFAVFDDVDVXFDVFFDGVGXXDXXDGDVDGVXGDVGFDAADFGDFADFAGDDFFDAAAAG | GFFVDVDAFAFGFFAAFGADAGFADGGAFAFVVFVFGVVVDDDVVDGVAAGFAFDAGADAFFDAAADFAFFVGFDAVDGGVGFAVFDDVDVXFDVFFDGVGXXDXXDGDVDGVXGDVGFDAADFGDFADFAGDDFFDAAAAG | TO INFINITY AND BEYOND THE FRONTIER OF HUMAN KNOWLEDGE CALLS TO EACH GENERATION ANEW | adfgvx | adfgvx | fractionation | {
"polybius": "KAISER",
"columnar": "BERLIN"
} | advanced | en | 142 | 142 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-v3-0180 | CAZYBWCSUZPMROIOPUANKZYUJHSIQHDDWBXXLULNPWYPSWILZHOZIYXXBZYUWOMMOWHNLZVMMHVDQVCUXYK | CAZYBWCSUZPMROIOPUANKZYUJHSIQHDDWBXXLULNPWYPSWILZHOZIYXXBZYUWOMMOWHNLZVMMHVDQVCUXYK | RSA ENCRYPTION RELIES ON THE MATHEMATICAL DIFFICULTY OF FACTORING THE PRODUCT OF TWO LARGE PRIMES | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "6,1,4,2,5,3"
} | expert | en | 83 | 83 | cipher_museum | 2.0 | public | null | null |
geheimschreiber-182 | HDXHCYTYIQ | HDXHCYTYIQ | FLEE AT ONCE | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "MUSEUM"
} | expert | en | 10 | 10 | cipher_museum | 0.2 | public | null | null |
cardano-autokey-v2-0002 | OCRKAHGKQGMLUFHHWLKFMCH | OCRKAHGKQGMLUFHHWLKFMCH | CARTHAGE MUST BE DESTROYED | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "MILAN"
} | advanced | en | 23 | 23 | cipher_museum | 2.0 | public | null | null |
trithemius-v2-0098 | LB NLFJXAM PETPNBI BV HXOKHB TDRT WQ EAKUQA WPUYZTKI WM JGQP HTSUG SSZX AWDC WQF VDCDWL FDXOCR | LB NLFJXAM PETPNBI BV HXOKHB TDRT WQ EAKUQA WPUYZTKI WM JGQP HTSUG SSZX AWDC WQF VDCDWL FDXOCR | LA LIBERTE GUIDANT LE PEUPLE VERS UN AVENIR MEILLEUR ET PLUS JUSTE POUR TOUS LES HOMMES LIBRES | trithemius | trithemius | polyalphabetic | {
"type": "none",
"value": null
} | beginner | en | 78 | 94 | cipher_museum | 2.0 | public | null | null |
m209-v2-0189 | YPNZOZKQSMIYAIYXGPNRAJWCJYBYCGYXTLNPRGIORMVDKGWPAHYLDZUTXIYJMVBTTPOKOXNVKY | YPNZOZKQSMIYAIYXGPNRAJWCJYBYCGYXTLNPRGIORMVDKGWPAHYLDZUTXIYJMVBTTPOKOXNVKY | FOR GOD SO LOVED THE WORLD THAT HE GAVE HIS ONLY SON THAT WHOEVER BELIEVES SHALL NOT PERISH | m209 | m209 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v2-1038 | GHSRAOSEMTIAGWUEDDT | GHSRAOSEMTIAGWUEDDT | WISDOM GUARDS THE GATE | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "TRIUMPH"
} | intermediate | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
nihilist-v3-0260 | 24 36 77 52 56 76 64 56 47 60 54 55 57 86 26 59 56 33 45 37 75 56 25 88 44 36 66 73 45 65 58 52 37 39 43 26 25 58 56 24 47 64 54 57 96 43 56 58 66 56 57 76 22 35 48 43 28 57 96 43 58 36 54 45 66 88 23 54 56 | 24 36 77 52 56 76 64 56 47 60 54 55 57 86 26 59 56 33 45 37 75 56 25 88 44 36 66 73 45 65 58 52 37 39 43 26 25 58 56 24 47 64 54 57 96 43 56 58 66 56 57 76 22 35 48 43 28 57 96 43 58 36 54 45 66 88 23 54 56 | THE LOVE OF MONEY IS THE ROOT OF ALL EVIL BUT IT IS THE LOVE OF GOOD THAT MOVES THE WORLD | nihilist | nihilist | fractionation | {
"polybius": "TRIUMPH",
"keyword": "JUSTICE"
} | advanced | en | 138 | 206 | cipher_museum | 2.0 | public | null | null |
cda-0007350 | COGGSEA JBERF VRYC PESOX ZBABOYCVOPRGWQ FHPFGWGHGVBA GVR QSGRQGVIS FGHQWSF COGGSEAF NSTBER ZOXVAT PNOVZF | COGGSEA JBERF VRYC PESOX ZBABOYCVOPRGWQ FHPFGWGHGVBA GVR QSGRQGVIS FGHQWSF COGGSEAF NSTBER ZOXVAT PNOVZF | PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS | porta | porta | null | {
"key": "SECURE"
} | hard | en | 92 | 92 | synthetic_educational | null | null | [] | |
joseon-yeokhak-v3-0362 | AFEQTWYAFFAFYAKEQWFVSFVAFEQWFVAKEQTWYAFFAFYSKLZWIMWWFGXKUGLKCFWOOWDD | AFEQTWYAFFAFYAKEQWFVSFVAFEQWFVAKEQTWYAFFAFYSKLZWIMWWFGXKUGLKCFWOOWDD | IN MY BEGINNING IS MY END AND IN MY END IS MY BEGINNING AS THE QUEEN OF SCOTS KNEW WELL | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "DYNASTY"
} | beginner | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
cda-0011620 | TCRYC ERASO EHELC OESET WTTNA AWEIH EPPOL CSTLW HLEDM MGRIO HEEEH CREHV IEADI WCRSE DBVEU NFERF RSSUH PCTRG EUILH YRTOE AASOI TRKRI TNHIM EANSN EEGSR OTESH LYNTY XHOPS ESBYD SSKSR EAEIT EMEHM TRWEX | TCRYC ERASO EHELC OESET WTTNA AWEIH EPPOL CSTLW HLEDM MGRIO HEEEH CREHV IEADI WCRSE DBVEU NFERF RSSUH PCTRG EUILH YRTOE AASOI TRKRI TNHIM EANSN EEGSR OTESH LYNTY XHOPS ESBYD SSKSR EAEIT EMEHM TRWEX | THE VIGENERE CIPHER USES A REPEATING KEYWORD CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS THE BEST LESSONS SHOW WHERE THE METHOD FAILS THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | stager_route | stager_route | null | {
"cols": 11
} | hard | en | 165 | 165 | synthetic_educational | null | null | [] | |
polybius-de-016 | 52 24 42 25 11 35 24 44 45 31 24 15 42 15 33 33 24 15 32 11 31 43 | 52 24 42 25 11 35 24 44 45 31 24 15 42 15 33 33 24 15 32 11 31 43 | WIR KAPITULIEREN NIEMALS | polybius | polybius | substitution | {
"type": "none",
"value": null
} | beginner | de | 44 | 65 | cipher_museum | 0.2 | public | null | null |
cda-0017223 | 25 80 69 29 61 76 82 57 11 59 61 82 61 68 11 50 25 50 66 61 82 72 59 82 29 52 82 68 61 66 36 82 80 82 65 82 68 66 50 29 25 55 82 43 | 25 80 69 29 61 76 82 57 11 59 61 82 61 68 11 50 25 50 66 61 82 72 59 82 29 52 82 68 61 66 36 82 80 82 65 82 68 66 50 29 25 55 82 43 | GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY | 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. |
stager-route-v2-0280 | CRKOUNERASSGEXXINXXDAX | CRKOUNERASSGEXXINXXDAX | COURAGE IN DARKNESS | stager_route | stager_route | transposition | {
"type": "integer",
"value": 11
} | expert | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
bifid-v3-0477 | PQLATPBQSWKVHBOXHE | PQLATPBQSWKVHBOXHE | CROSS THE RUBICON NOW | bifid | bifid | fractionation | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
vigenere-v3-0509 | ZVHUZQWYEYSGULTNGGRSEYSYIVVORRQKTNOGDCLSSADIEIFRDKEJSDXRLZVNWKHKMNUVETRBZVDHMGKVIXQEHRTUFJLKHISEWRITIADCIKBNECEXWTKKSZVNWRMUBTWYEYSNUVLOTROZBKFGBRNJHUHGUXGHLKOLVNSGITSFV | ZVHUZQWYEYSGULTNGGRSEYSYIVVORRQKTNOGDCLSSADIEIFRDKEJSDXRLZVNWKHKMNUVETRBZVDHMGKVIXQEHRTUFJLKHISEWRITIADCIKBNECEXWTKKSZVNWRMUBTWYEYSNUVLOTROZBKFGBRNJHUHGUXGHLKOLVNSGITSFV | WE HOLD THESE TRUTHS TO BE SELF EVIDENT THAT ALL MEN ARE CREATED EQUAL THAT THEY ARE ENDOWED BY THEIR CREATOR WITH CERTAIN UNALIENABLE RIGHTS THAT AMONG THESE ARE LIFE LIBERTY AND THE PURSUIT OF HAPPINESS | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "DRAGON"
} | intermediate | en | 169 | 169 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-064 | 65282257773299712072812228124472 | 65282257773299712072812228124472 | RENDEZVOUS AT MIDNIGHT | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "CIPHERMUS"
} | advanced | en | 32 | 32 | cipher_museum | 0.2 | public | null | null |
enigma-v2-0533 | JVUXYLOGQYYVUAEFBYRHT | JVUXYLOGQYYVUAEFBYRHT | PATIENCE BRINGS VICTORY | enigma | enigma | machine | {
"type": "rotor_start",
"value": "MNO"
} | expert | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
cda-0016216 | .... .. ... .... .... ..... .... .... . ..... . ... .. .... ... ..... .. ... . ..... .... .. .... ... .... .. . ..... . . . .... . . .. .. .... .. .. .... . .... .. .... ... ... . . ... ..... .... .. . ..... .... ... . ... .... .. .. .... . .. . ..... . .... .. .. . ..... ... .... .... | .... .. ... .... .... ..... .... .... . ..... . ... .. .... ... ..... .. ... . ..... .... .. .... ... .... .. . ..... . . . .... . . .. .. .... .. .. .... . .... .. .... ... ... . . ... ..... .... .. . ..... .... ... . ... .... .. .. .... . .. . ..... . .... .. .. . ..... ... .... .... | ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN | tap_code | tap_code | null | {} | medium | en | 50 | 50 | 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. |
geheimschreiber-v3-0097 | VAJFYDHTWSMCVDYXYECXUYCNOGPUMVUOYPMVQXTBTGBPSSQLXWZHPBQQFCNLBIUFZXQCCXTGETOVPBCUEWMYPQMSJTILIYZECWJARQHJLXNLEWJBPZQHMZNNGNKAEVRYMTPKHVULSFRLVUQWKTWJSRWMTVXBLEL | VAJFYDHTWSMCVDYXYECXUYCNOGPUMVUOYPMVQXTBTGBPSSQLXWZHPBQQFCNLBIUFZXQCCXTGETOVPBCUEWMYPQMSJTILIYZECWJARQHJLXNLEWJBPZQHMZNNGNKAEVRYMTPKHVULSFRLVUQWKTWJSRWMTVXBLEL | THE LORD OUR GOD IS ONE LORD AND THOU SHALT LOVE THE LORD THY GOD WITH ALL THINE HEART AND WITH ALL THY SOUL AND WITH ALL THY MIGHT AND THESE WORDS WHICH I COMMAND THEE THIS DAY SHALL BE IN THINE HEART | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "BERLIN"
} | expert | en | 159 | 159 | cipher_museum | 2.0 | public | null | null |
rail-fence-v3-0522 | CROSSTWHOENRNUOBCI | CROSSTWHOENRNUOBCI | CROSS THE RUBICON NOW | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 12
} | intermediate | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
cda-0005935 | TIGU ENRM MWMP OVDW UIOK COAP RDXU KQEE ONHJ QAMG HTHE HTNO AOLV OSFV LJRW JAOL WZCC ERDI BVXB RHCT WEWY OACC SZZ | TIGU ENRM MWMP OVDW UIOK COAP RDXU KQEE ONHJ QAMG HTHE HTNO AOLV OSFV LJRW JAOL WZCC ERDI BVXB RHCT WEWY OACC SZZ | THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION | trithemius | trithemius | null | {} | hard | en | 91 | 91 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
bacon-cipher-v2-0002 | AAABA AAAAA BAAAA BAABA AABBB AAAAA AABBA AABAA ABABB BAABB BAAAB BAABA AAAAB AABAA AAABB AABAA BAAAB BAABA BAAAA ABBAB BABBB AABAA AAABB | AAABA AAAAA BAAAA BAABA AABBB AAAAA AABBA AABAA ABABB BAABB BAAAB BAABA AAAAB AABAA AAABB AABAA BAAAB BAABA BAAAA ABBAB BABBB AABAA AAABB | CARTHAGE MUST BE DESTROYED | bacon_cipher | bacon_cipher | steganography | {
"type": "none",
"value": null
} | beginner | en | 115 | 137 | cipher_museum | 2.0 | public | null | null |
voynich-render-v3-0084 | ri ndqxir xcoff ad cdfe gi orxjdq siq o yonkgof yqkld zrfdxx ir nqdxdrgldrg is o hqore tzqu | ri ndqxir xcoff ad cdfe gi orxjdq siq o yonkgof yqkld zrfdxx ir nqdxdrgldrg is o hqore tzqu | NO PERSON SHALL BE HELD TO ANSWER FOR A CAPITAL CRIME UNLESS ON PRESENTMENT OF A GRAND JURY | voynich_render | voynich_render | substitution | {
"type": "none",
"value": null
} | expert | en | 74 | 91 | cipher_museum | 2.0 | public | null | null |
cda-0018580 | 5.15.12 12.32.5 2.41.5 10.22.8 7.27.2 10.20.1 19.46.2 7.13.4 4.9.9 15.32.10 9.50.12 3.44.15 1.15.10 18.45.9 16.7.10 9.17.2 9.46.8 18.50.2 5.30.11 16.42.13 19.5.10 7.3.10 19.15.6 17.7.5 10.9.3 20.39.6 15.2.8 3.45.12 12.42.1 13.18.7 1.18.6 12.12.11 11.29.5 16.29.1 5.27.7 9.27.3 4.8.6 16.10.13 10.19.4 17.6.15 9.39.4 6.41.... | 5.15.12 12.32.5 2.41.5 10.22.8 7.27.2 10.20.1 19.46.2 7.13.4 4.9.9 15.32.10 9.50.12 3.44.15 1.15.10 18.45.9 16.7.10 9.17.2 9.46.8 18.50.2 5.30.11 16.42.13 19.5.10 7.3.10 19.15.6 17.7.5 10.9.3 20.39.6 15.2.8 3.45.12 12.42.1 13.18.7 1.18.6 12.12.11 11.29.5 16.29.1 5.27.7 9.27.3 4.8.6 16.10.13 10.19.4 17.6.15 9.39.4 6.41.... | TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS | book_cipher | book_cipher | null | {} | medium | en | 55 | 55 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
argenti-v2-0199 | 37 82 83 75 20 84 67 83 66 17 70 71 20 37 66 41 44 89 28 18 83 63 32 72 22 71 20 37 66 41 25 89 75 37 28 56 66 83 12 23 44 20 22 37 83 13 63 66 28 37 72 16 20 71 83 66 75 64 17 59 65 20 67 36 27 63 56 41 25 32 83 20 12 | 37 82 83 75 20 84 67 83 66 17 70 71 20 37 66 41 44 89 28 18 83 63 32 72 22 71 20 37 66 41 25 89 75 37 28 56 66 83 12 23 44 20 22 37 83 13 63 66 28 37 72 16 20 71 83 66 75 64 17 59 65 20 67 36 27 63 56 41 25 32 83 20 12 | THE SECRET OF GETTING AHEAD IS GETTING STARTED ONE STEP AT A TIME GETS YOU VERY FAR INDEED | argenti | argenti | nomenclator | {
"type": "seed",
"value": "PAPAL"
} | expert | en | 146 | 218 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-v3-0184 | M4NM4AW2PVIR6QG3FP236PFDAXTLMMQM4VJPDJAD5VEMQW76YAKPJCT2YIMHWHULFTKFC2P2JJCU4OAFPS | M4NM4AW2PVIR6QG3FP236PFDAXTLMMQM4VJPDJAD5VEMQW76YAKPJCT2YIMHWHULFTKFC2P2JJCU4OAFPS | HUMINT OR HUMAN INTELLIGENCE GATHERING RELIES ON PERSONAL CONTACT AND HUMAN SOURCES IN THE FIELD | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "LIBERTY"
} | expert | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
vigenere-v3-0379 | SAKJWBNAHRMMTFQNUKPSJPRLTBIIAOWUVORJDZKQGRZOLSTSYALZOWTSNERKPHRGIEXJSRQTP | SAKJWBNAHRMMTFQNUKPSJPRLTBIIAOWUVORJDZKQGRZOLSTSYALZOWTSNERKPHRGIEXJSRQTP | WATSON WE HAVE FOUND THE STRUCTURE OF DNA AND IT IS A DOUBLE HELIX OF BREATHTAKING BEAUTY | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "WARRIOR"
} | intermediate | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
red-type-a-v3-0020 | SEHGRFYFJAUV | SEHGRFYFJAUV | GOLD FROM LEAD | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "SAKURA"
} | advanced | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
enigma-v2-0718 | VCTOOZZIXCBSYYUXQBJDMBEHVKDCKKHCKDWNNQPBAOHLEMFJBBHFTAFLXJCGYSZGGLJKJLOHSZHJYMV | VCTOOZZIXCBSYYUXQBJDMBEHVKDCKKHCKDWNNQPBAOHLEMFJBBHFTAFLXJCGYSZGGLJKJLOHSZHJYMV | CLAUDE SHANNON PROVED THAT THE ONE TIME PAD ACHIEVES PERFECT SECRECY WHEN USED CORRECTLY ONCE | enigma | enigma | machine | {
"type": "rotor_start",
"value": "PQR"
} | expert | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
rot13-v3-0031 | FBAF BS YVOREGL NFFRZOYR | FBAF BS YVOREGL NFFRZOYR | SONS OF LIBERTY ASSEMBLE | rot13 | rot13 | substitution | {
"type": "none",
"value": null
} | beginner | en | 21 | 24 | cipher_museum | 2.0 | public | null | null |
kl7-v2-0143 | TJUWXERCIGRPDPIPXCZ | TJUWXERCIGRPDPIPXCZ | CODED MESSAGE FOLLOWS | kl7 | kl7 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
cda-0004013 | VQNM DQQM UXCK HAVZ AFRA HSEG VEQT MKFR EYDU TMTT QMWR URQT CJUK SKHA NIEL ITYS MQFG JKLF GNLS DERW FIEL KTGW DUON KXYF DAKX AFCS UVEV CMFD AKTA FCCY ZTAQ RXTA YAEX ZAQF KGGB WWNH GCFZ GWTG JRQS TEJD GHGI YTBG VEFC ALIA YXBW KNUF KNRX QXUQ XY | VQNM DQQM UXCK HAVZ AFRA HSEG VEQT MKFR EYDU TMTT QMWR URQT CJUK SKHA NIEL ITYS MQFG JKLF GNLS DERW FIEL KTGW DUON KXYF DAKX AFCS UVEV CMFD AKTA FCCY ZTAQ RXTA YAEX ZAQF KGGB WWNH GCFZ GWTG JRQS TEJD GHGI YTBG VEFC ALIA YXBW KNUF KNRX QXUQ XY | POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING | beaufort | beaufort | null | {
"key": "KEY"
} | hard | en | 194 | 194 | synthetic_educational | null | null | [
"kasiski_examination",
"friedman_test",
"index_of_coincidence"
] | Beaufort: E(x)=k-x mod 26 — reciprocal cipher (decryption identical to encryption). |
running-key-v3-0109 | PLWRIYRIMSHGRFYLEMXY | PLWRIYRIMSHGRFYLEMXY | THE KING DEMANDS FEALTY | running_key | running_key | polyalphabetic | {
"type": "text",
"value": "Churchill Dunkirk speech"
} | intermediate | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
four-square-v3-0053 | SGCOIMYSGFKFOTETSRAPVGKSSGCUTDROMHIGPZBNFSGIRDNNANLOTNCNNMSGFNBAQLII | SGCOIMYSGFKFOTETSRAPVGKSSGCUTDROMHIGPZBNFSGIRDNNANLOTNCNNMSGFNBAQLII | THE ONLY THING NECESSARY FOR THE TRIUMPH OF EVIL IS FOR GOOD MEN TO DO NOTHING AT ALL | four_square | four_square | polygraphic | {
"key1": "PALACE",
"key2": "BATTLE"
} | advanced | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-138 | ZSPLYDRCPPCYBGLE | ZSPLYDRCPPCYBGLE | BURN AFTER READING | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "KOREA"
} | beginner | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
lorenz-v2-0138 | CONTACTHASBEENMADE | CONTACTHASBEENMADE | CONTACT HAS BEEN MADE | lorenz | lorenz | machine | {
"type": "seed",
"value": "FISH"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
fialka-v3-0214 | OISYIHJRQEHTZGOT | OISYIHJRQEHTZGOT | THE GATES HOLD FIRM | fialka | fialka | machine | {
"type": "seed",
"value": "SOVIET"
} | expert | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
diana-v3-0335 | GOQTZTQAIUARQ | GOQTZTQAIUARQ | FULL SAIL AHEAD | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "LIBERTY"
} | intermediate | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
chaocipher-v2-0390 | SNKHJLXJXWBNAUEWXMC | SNKHJLXJXWBNAUEWXMC | MISSION ACCOMPLISHED | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
m209-v3-0125 | KWAQLUPLVNXNMXNJAWEPXYLCRU | KWAQLUPLVNXNMXNJAWEPXYLCRU | THE PRINTING PRESS CHANGES ALL | m209 | m209 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
two-square-115 | SMEEBAKNHARHFADEDX | SMEEBAKNHARHFADEDX | THE EAGLE HAS LANDED | two_square | two_square | polygraphic | {
"key1": "SECRET",
"key2": "AGENTS"
} | advanced | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
kama-sutra-108 | YO IFR LGFH SFAW IFRUBVKO TGQ IFRU VGVJI IFR GVVQ GFA OVTU AWV UVBRKA | YO IFR LGFH SFAW IFRUBVKO TGQ IFRU VGVJI IFR GVVQ GFA OVTU AWV UVBRKA | IF YOU KNOW BOTH YOURSELF AND YOUR ENEMY YOU NEED NOT FEAR THE RESULT | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | en | 56 | 69 | cipher_museum | 0.2 | public | null | null |
gronsfeld-v2-0574 | SYUBHVLKZAXITVEXIXUOTIZPEDMXLSCXUVTJIHCSVSLXANPGAJWWZIBQZKUYELGUBGVJWOT | SYUBHVLKZAXITVEXIXUOTIZPEDMXLSCXUVTJIHCSVSLXANPGAJWWZIBQZKUYELGUBGVJWOT | QUOTH THE RAVEN NEVERMORE THE BIRD SAT ON THE BUST OF PALLAS JUST ABOVE MY CHAMBER DOOR | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "24680"
} | intermediate | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
affine-434 | DAA PR ALRM WJMWJDM | DAA PR ALRM WJMWJDM | ALL IS LOST RETREAT | affine | affine | substitution | {
"a": 21,
"b": 3
} | beginner | en | 16 | 19 | cipher_museum | 0.2 | public | null | null |
zimmermann-v2-0088 | 99999 90002 90011 90000 90020 90003 90004 99998 99999 90018 90007 90000 90013 90013 90014 90013 99998 99999 90015 90017 90014 90021 90004 90003 99998 00007 00000 00026 00052 99999 90015 90000 90003 99998 99999 90000 90002 90007 90008 90004 90021 90004 90018 99998 99999 90015 90004 90017 90005 90004 90002 90019 99998 99... | 99999 90002 90011 90000 90020 90003 90004 99998 99999 90018 90007 90000 90013 90013 90014 90013 99998 99999 90015 90017 90014 90021 90004 90003 99998 00007 00000 00026 00052 99999 90015 90000 90003 99998 99999 90000 90002 90007 90008 90004 90021 90004 90018 99998 99999 90015 90004 90017 90005 90004 90002 90019 99998 99... | CLAUDE SHANNON PROVED THAT THE ONE TIME PAD ACHIEVES PERFECT SECRECY WHEN USED CORRECTLY ONCE | zimmermann | zimmermann | codebook | {
"type": "none",
"value": null
} | expert | en | 430 | 515 | cipher_museum | 2.0 | public | null | null |
four-square-v3-0274 | OOMIFSQWGRBLEPTMCTQKGPCSDUODRMUNATTGUDPEATLMQYDDPIUPEQALBOCSERGTOCQLBNYHDINAMMQAKUOX | OOMIFSQWGRBLEPTMCTQKGPCSDUODRMUNATTGUDPEATLMQYDDPIUPEQALBOCSERGTOCQLBNYHDINAMMQAKUOX | RSA ENCRYPTION RELIES ON THE MATHEMATICAL DIFFICULTY OF FACTORING THE PRODUCT OF TWO LARGE PRIMES | four_square | four_square | polygraphic | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
chaocipher-v2-0092 | JABAXDJICUSOBJOSZGHPIJTMANHIJEGQFYHTBLALBIJFNKHCWNZIPJZSPHMDEFYDJJPSJOOVCQWDGH | JABAXDJICUSOBJOSZGHPIJTMANHIJEGQFYHTBLALBIJFNKHCWNZIPJZSPHMDEFYDJJPSJOOVCQWDGH | YOUR MISSION IF YOU CHOOSE TO ACCEPT IT IS TO EXTRACT THE AGENT FROM BEHIND ENEMY LINES TONIGHT | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
wheatstone-v2-0096 | QHRZYFFRNFTIIQRDRPNTFVTOGRLJGRGEXNJJFAJNQXYIDJIGJITIGENJSPHQTFRNYLTYIQJQHRPNRTQVTN | QHRZYFFRNFTIIQRDRPNTFVTOGRLJGRGEXNJJFAJNQXYIDJIGJITIGENJSPHQTFRNYLTYIQJQHRPNRTQVTN | THE ZIMMERMANN TELEGRAM WAS DECODED BY ROOM FORTY IN LONDON AND BROUGHT AMERICA INTO THE GREAT WAR | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "TELEGRAPHY"
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
typex-v3-0235 | AAHUVZQTYXUGNQAYGPHW | AAHUVZQTYXUGNQAYGPHW | THE COMPASS POINTS TRUE | typex | typex | machine | {
"type": "keyword",
"value": "EMPIRE"
} | expert | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v3-0972 | VPARENTALILLAXSGYI | VPARENTALILLAXSGYI | GRAVITY EXPLAINS ALL | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "WISDOM"
} | intermediate | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
vernam-v3-0012 | DFWVZZRA | DFWVZZRA | DEUS VULT | vernam | vernam | stream | {
"type": "pad",
"value": "ABCDEFGH (repeating)"
} | expert | en | 8 | 8 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-v2-0163 | OUSIUZMUOYGMOHVMBMRZRFGKVFZHPDPLMHXXMPIZOEGUKMOVHFITXDXNKVVMYXQVXTLFIKJ | OUSIUZMUOYGMOHVMBMRZRFGKVFZHPDPLMHXXMPIZOEGUKMOVHFITXDXNKVVMYXQVXTLFIKJ | WITH MALICE TOWARD NONE WITH CHARITY FOR ALL LET US BIND UP THE NATIONS WOUNDS AND HEAL | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "6,1,4,2,5,3"
} | expert | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
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