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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
confederate-vigenere-v2-0284 | HXICVLJRAYQCJ | HXICVLJRAYQCJ | E PLURIBUS UNUM | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "DIXIE"
} | intermediate | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
kryha-v3-0032 | UPTEVXRMITJUKRQYKXYOCSFSL | UPTEVXRMITJUKRQYKXYOCSFSL | THE SHOT HEARD ROUND THE WORLD | kryha | kryha | machine | {
"type": "keyword",
"value": "MUNICH"
} | expert | en | 25 | 25 | cipher_museum | 2.0 | public | null | null |
cda-0021593 | XJYKE WXTVZ CLLGC FBWVZ SCTDO DBOUP XWWCT XQCQH TMLBY IJOTE FQCWR DFOUI HPIPS VCONZ DDDLY DHLTF IMEQJ QVNQG QTGVD GBTWV CJEVL VLKJO VLJML | XJYKE WXTVZ CLLGC FBWVZ SCTDO DBOUP XWWCT XQCQH TMLBY IJOTE FQCWR DFOUI HPIPS VCONZ DDDLY DHLTF IMEQJ QVNQG QTGVD GBTWV CJEVL VLKJO VLJML | GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION | 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. |
cda-0017270 | 23 24 43 44 34 42 24 13 11 31 13 24 35 23 15 42 43 11 42 15 44 15 11 13 23 15 42 43 33 34 44 35 42 34 44 15 13 44 24 34 33 32 34 14 15 42 33 15 33 13 42 54 35 44 24 34 33 24 43 33 34 44 12 42 34 25 15 33 12 54 31 15 44 44 15 42 21 42 15 41 45 15 33 13 54 23 24 31 31 13 24 35 23 15 42 45 43 15 43 31 24 33 15 11 42 11 31... | 23 24 43 44 34 42 24 13 11 31 13 24 35 23 15 42 43 11 42 15 44 15 11 13 23 15 42 43 33 34 44 35 42 34 44 15 13 44 24 34 33 32 34 14 15 42 33 15 33 13 42 54 35 44 24 34 33 24 43 33 34 44 12 42 34 25 15 33 12 54 31 15 44 44 15 42 21 42 15 41 45 15 33 13 54 23 24 31 31 13 24 35 23 15 42 45 43 15 43 31 24 33 15 11 42 11 31... | HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS | polybius | polybius | null | {} | hard | en | 136 | 136 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
babington-v3-0095 | ⟨a13⟩ ⟨w28⟩ ⟨n04⟩ ⟨w14⟩ ⟨n04⟩ ⟨w06⟩ ⟨w28⟩ ⟨a05⟩ ⟨a11⟩ ⟨w07⟩ ⟨w28⟩ ⟨w01⟩ ⟨a02⟩ ⟨w20⟩ ⟨w26⟩ ⟨w01⟩ ⟨w21⟩ ⟨a11⟩ ⟨a05⟩ ⟨w07⟩ ⟨a20⟩ | ⟨a13⟩ ⟨w28⟩ ⟨n04⟩ ⟨w14⟩ ⟨n04⟩ ⟨w06⟩ ⟨w28⟩ ⟨a05⟩ ⟨a11⟩ ⟨w07⟩ ⟨w28⟩ ⟨w01⟩ ⟨a02⟩ ⟨w20⟩ ⟨w26⟩ ⟨w01⟩ ⟨w21⟩ ⟨a11⟩ ⟨a05⟩ ⟨w07⟩ ⟨a20⟩ | THE EXPERIMENT CONFIRMS | babington | babington | nomenclator | {
"type": "seed",
"value": "SCOTLAND"
} | expert | en | 105 | 125 | cipher_museum | 2.0 | public | null | null |
two-square-015 | OPEREVNYKCXFHPSX | OPEREVNYKCXFHPSX | OPERATION BEGINS | two_square | two_square | polygraphic | {
"key1": "EXAMPLE",
"key2": "KEYWORD"
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
adfgx-v3-0293 | DAADGAADGDGDGADGAFGFDGGFGGDFGDFG | DAADGAADGDGDGADGAFGFDGGFGGDFGDFG | THE SENATE DECREES | adfgx | adfgx | fractionation | {
"polybius": "DRAGON",
"columnar": "THUNDER"
} | advanced | en | 32 | 32 | cipher_museum | 2.0 | public | null | null |
bacon-cipher-v3-0044 | BAABA AABBB AABAA BAAAA AAAAA ABAAA ABABA BABAB AAAAA BABBB AAAAA BAAAA BAAAA ABAAA BABAA AABAA BAAAB | BAABA AABBB AABAA BAAAA AAAAA ABAAA ABABA BABAB AAAAA BABBB AAAAA BAAAA BAAAA ABAAA BABAA AABAA BAAAB | THE RAILWAY ARRIVES | bacon_cipher | bacon_cipher | steganography | {
"type": "none",
"value": null
} | beginner | en | 85 | 101 | cipher_museum | 2.0 | public | null | null |
purple-076 | NMPDTVUOSVSJSXUTNE | NMPDTVUOSVSJSXUTNE | SEND REINFORCEMENTS | purple | purple | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
bazeries-v3-0377 | QFOYAQENJYGQOPXQQYPFGEMSMAQTYQPXFTYYPJRTIFNMYUJQAQXQNBTIFPSJGFSPFRJQPYBQGFQ | QFOYAQENJYGQOPXQQYPFGEMSMAQTYQPXFTYYPJRTIFNMYUJQAQXQNBTIFPSJGFSPFRJQPYBQGFQ | THE BATTLE OF GETTYSBURG LASTED THREE DAYS AND COST OVER FIFTY THOUSAND CASUALTIES TOTAL | bazeries | bazeries | transposition | {
"type": "integer",
"value": 41
} | advanced | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
trifid-v2-0419 | OWXDBAKEKCX+FBVNAARKGFNJR+IEEW+THJVUREEVAAEEWSRWC | OWXDBAKEKCX+FBVNAARKGFNJR+IEEW+THJVUREEVAAEEWSRWC | ALL THAT GLITTERS IS NOT GOLD OFTEN HAVE YOU HEARD THAT TOLD | trifid | trifid | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 49 | 49 | cipher_museum | 2.0 | public | null | null |
cda-0020107 | SEUQ GVIX JDOG LUYD CXSU IESL SCQW OVYT LGIG OOIV QJIJ FHJL ODIJ BIDC QKBC ADDI DDZA GLDM RRGW WA | SEUQ GVIX JDOG LUYD CXSU IESL SCQW OVYT LGIG OOIV QJIJ FHJL ODIJ BIDC QKBC ADDI DDZA GLDM RRGW WA | MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY THE INDEX OF COINCIDENCE IS A USEFUL CLUE | one_time_pad | one_time_pad | null | {} | medium | en | 78 | 78 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
venona-pad-reuse-v2-0187 | L2LSWTLTGVGR63FNPVJ5M2KPQ4AJTFPXHUYYQPQARW7FSVJRYGLPB7CAF4SKSTALFCE2FYT2 | L2LSWTLTGVGR63FNPVJ5M2KPQ4AJTFPXHUYYQPQARW7FSVJRYGLPB7CAF4SKSTALFCE2FYT2 | ASK WHAT YOU CAN DO FOR YOUR COUNTRY NOT WHAT YOUR COUNTRY CAN DO FOR YOU TODAY AND ALWAYS | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "LIBERTY"
} | expert | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
purple-v2-0284 | OVHZSYLGTNUDP | OVHZSYLGTNUDP | E PLURIBUS UNUM | purple | purple | machine | {
"type": "seed",
"value": "SAKURA"
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
vigenere-v2-1370 | DSFVRSZSWXOHBBKOSOSRJVRGNLGUOCSTVUYACAHYLZNBUPBTUIVIARJDSFVRSZSWXOHVBKOSSWVSRFOEKWAHYLGGFVLHFKVZVNZCMWTVKPBGVVOWYZJDSFVRSZASMLFFIIYSARVY | DSFVRSZSWXOHBBKOSOSRJVRGNLGUOCSTVUYACAHYLZNBUPBTUIVIARJDSFVRSZSWXOHVBKOSSWVSRFOEKWAHYLGGFVLHFKVZVNZCMWTVKPBGVVOWYZJDSFVRSZASMLFFIIYSARVY | 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 | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "HONOR"
} | intermediate | en | 136 | 136 | cipher_museum | 2.0 | public | null | null |
great-cipher-v2-0250 | 135 174 117 179 108 129 110 141 167 168 100 107 156 181 125 160 153 119 149 151 182 181 169 136 175 112 138 110 119 100 176 122 105 128 168 100 122 117 108 179 149 149 144 170 129 119 144 158 109 173 158 107 177 182 175 138 152 123 176 119 168 120 101 139 128 114 115 177 116 128 156 134 108 110 119 158 104 174 143 101 ... | 135 174 117 179 108 129 110 141 167 168 100 107 156 181 125 160 153 119 149 151 182 181 169 136 175 112 138 110 119 100 176 122 105 128 168 100 122 117 108 179 149 149 144 170 129 119 144 158 109 173 158 107 177 182 175 138 152 123 176 119 168 120 101 139 128 114 115 177 116 128 156 134 108 110 119 158 104 174 143 101 ... | ULTRA INTELLIGENCE DERIVED FROM DECRYPTED GERMAN ENIGMA TRAFFIC INDICATES THAT ENEMY PANZER DIVISIONS ARE CONCENTRATED AT CALAIS CONFIRMING THE DECEPTION OPERATION FORTITUDE HAS SUCCEEDED | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "ROSSIGNOL"
} | expert | en | 357 | 475 | cipher_museum | 2.0 | public | null | null |
cda-0022108 | XOZHHRXZO XRKSVIH GVZXS DSB NLWVIM HVXFIRGB NZGGVIH Z HGILMT XOZRN MVVWH HGILMT VERWVMXV | XOZHHRXZO XRKSVIH GVZXS DSB NLWVIM HVXFIRGB NZGGVIH Z HGILMT XOZRN MVVWH HGILMT VERWVMXV | CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS A STRONG CLAIM NEEDS STRONG EVIDENCE | atbash | atbash | null | {} | medium | en | 76 | 76 | synthetic_educational | null | null | [
"self_inverse_check",
"frequency_analysis"
] | Atbash maps A↔Z, B↔Y, … and is its own inverse. |
two-square-v3-0011 | PWLOLQKBFSATKBPLCOLW | PWLOLQKBFSATKBPLCOLW | AVE MARIA GRATIA PLENA | two_square | two_square | polygraphic | {
"key1": "PALACE",
"key2": "BATTLE"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v3-0551 | NEESRMOBSSISOTBFYLLAE | NEESRMOBSSISOTBFYLLAE | SONS OF LIBERTY ASSEMBLE | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "LIBERTY"
} | intermediate | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-039 | LNEZARULXCMCEDYYDBXMXTQHKZDHZQUJYEQDYZGEZVD | LNEZARULXCMCEDYYDBXMXTQHKZDHZQUJYEQDYZGEZVD | FORTUNE FAVORS THE BOLD AND THE BRAVE WHO DARE TO ACT | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "3,1,5,2,4,6"
} | expert | en | 43 | 43 | cipher_museum | 0.2 | public | null | null |
adfgx-v2-0380 | GAAGDDGDDGFXADGDAAFDDADAFFFFGGGDDDXGAGDAFX | GAAGDDGDDGFXADGDAAFDDADAFFFFGGGDDDXGAGDAFX | PATIENCE BRINGS VICTORY | adfgx | adfgx | fractionation | {
"polybius": "DRAGON",
"columnar": "THUNDER"
} | advanced | en | 42 | 42 | cipher_museum | 2.0 | public | null | null |
chaocipher-006 | SULFOAMBYBOTOLPW | SULFOAMBYBOTOLPW | PROCEED AS PLANNED | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "CHAOCIPHER"
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
slidex-114 | KRIEBAIGDNOBDXPRAYDXMEPIPDKJLOEQQOXDULUWCAXRHWVHWYNJQAKEHQTLKE | KRIEBAIGDNOBDXPRAYDXMEPIPDKJLOEQQOXDULUWCAXRHWVHWYNJQAKEHQTLKE | THE ENEMY KNOWS THE SYSTEM DESIGN YOUR CIPHER ACCORDINGLY WITH GREAT CARE | slidex | slidex | transposition | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 62 | 62 | cipher_museum | 0.2 | public | null | null |
cda-0010527 | EAENUSLDVIUTAILYMIOCOEESOTARSNTUTDIUAPRNAONIXXTTLTGIELROIARROEISNCLNFOISHSXXSEEOOIDOEOTNSPYUTRPTWECDNXILXXORPAEANIOEIYNMECIBNONTTDLLLWX | EAENUSLDVIUTAILYMIOCOEESOTARSNTUTDIUAPRNAONIXXTTLTGIELROIARROEISNCLNFOISHSXXSEEOOIDOEOTNSPYUTRPTWECDNXILXXORPAEANIOEIYNMECIBNONTTDLLLWX | ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS SLOWLY | stager_route | stager_route | null | {
"cols": 9
} | hard | en | 135 | 135 | synthetic_educational | null | null | [] | |
joseon-yeokhak-v2-0325 | ESPDPNCPEZQRPEETYRLSPLOTDRPEETYRDELCEPOZYPDEPALELETXPRPEDJZFGPCJQLCTYOPPO | ESPDPNCPEZQRPEETYRLSPLOTDRPEETYRDELCEPOZYPDEPALELETXPRPEDJZFGPCJQLCTYOPPO | THE SECRET OF GETTING AHEAD IS GETTING STARTED ONE STEP AT A TIME GETS YOU VERY FAR INDEED | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "HANGUL"
} | beginner | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
m94-v2-0064 | RWTBGFZQGIINMYPLLAZJYKFKHLZNTOJNAJMCORIIEPBQVLNARPZHLFTQXSTLNSLLVRQBZJYULCG | RWTBGFZQGIINMYPLLAZJYKFKHLZNTOJNAJMCORIIEPBQVLNARPZHLFTQXSTLNSLLVRQBZJYULCG | TRUST IN THE LORD WITH ALL THINE HEART AND LEAN NOT UNTO THINE OWN UNDERSTANDING IN ALL WAYS | m94 | m94 | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v3-0057 | FHWVSNVVBRYNQEFCMBQWALJWFBGBMVFTMBGMNXXBKHPHJKGCLWDLHSECJNKRRVRTBWBNNRA | FHWVSNVVBRYNQEFCMBQWALJWFBGBMVFTMBGMNXXBKHPHJKGCLWDLHSECJNKRRVRTBWBNNRA | TO INFINITY AND BEYOND THE FRONTIER OF HUMAN KNOWLEDGE CALLS TO EACH GENERATION ANEW | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "MILAN"
} | advanced | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
four-square-v2-0485 | DKORILSTNUEOCHFHGYQX | DKORILSTNUEOCHFHGYQX | CODED MESSAGE FOLLOWS | four_square | four_square | polygraphic | {
"key1": "WISDOM",
"key2": "COURAGE"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
trifid-198 | SHSGWLXIMDMJNRQG | SHSGWLXIMDMJNRQG | BURN AFTER READING | trifid | trifid | fractionation | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
slidex-v3-0303 | MMUMNDLHFNOLXLAOMMCPZIPSLPPWIJPWMNTHRNXMYPZGSKZEIYWMFTNODSOTFNOLLPOSSOIHMMFDGSUMUBPARXYXLARVODDGOWLRHFSOVXLPPYXLPKWYRXHVJVRBHFSKBVFNGWCPYOITMJPKCPMNBIWJRXEGTTMOMMRBXLAOXJIX | MMUMNDLHFNOLXLAOMMCPZIPSLPPWIJPWMNTHRNXMYPZGSKZEIYWMFTNODSOTFNOLLPOSSOIHMMFDGSUMUBPARXYXLARVODDGOWLRHFSOVXLPPYXLPKWYRXHVJVRBHFSKBVFNGWCPYOITMJPKCPMNBIWJRXEGTTMOMMRBXLAOXJIX | THE ARMY WILL CROSS THE DELAWARE RIVER TONIGHT AT ELEVEN OCLOCK THE MEN WILL CARRY ONLY THEIR WEAPONS AND THREE DAYS OF RATIONS MARCH ROUTES AND OBJECTIVES WILL BE DISTRIBUTED TO COMMANDERS AT THE CROSSING | slidex | slidex | transposition | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 172 | 172 | cipher_museum | 2.0 | public | null | null |
bifid-v2-0403 | MHRIRLITBEXBQPCHMRPNFLHVPHFBTPPMPSDRXXAUAYRLBNRSKWYEWIQMIBZGEVGRSNWSUPKI | MHRIRLITBEXBQPCHMRPNFLHVPHFBTPPMPSDRXXAUAYRLBNRSKWYEWIQMIBZGEVGRSNWSUPKI | GENERAL GRANT HAS TAKEN VICKSBURG THE GREAT RIVER IS NOW OPEN FROM ITS SOURCE TO THE SEA | bifid | bifid | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
great-cipher-072 | 139 179 137 164 118 116 182 177 159 127 166 174 121 138 130 | 139 179 137 164 118 116 182 177 159 127 166 174 121 138 130 | CIPHER KEY CHANGED | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 45 | 59 | cipher_museum | 0.2 | public | null | null |
cda-0018715 | 50 32 67 11 91 66 91 32 91 93 26 81 35 59 63 17 33 58 50 40 2 63 23 82 87 17 30 48 60 25 33 3 91 45 27 64 59 46 46 48 58 23 70 25 96 48 91 91 22 58 25 94 22 67 93 46 59 52 21 93 63 94 22 34 87 26 40 67 59 70 33 50 1 63 26 30 41 67 59 14 43 11 36 32 82 34 33 78 59 68 17 60 3 82 99 50 63 26 50 66 60 93 72 70 15 23 79 33 ... | 50 32 67 11 91 66 91 32 91 93 26 81 35 59 63 17 33 58 50 40 2 63 23 82 87 17 30 48 60 25 33 3 91 45 27 64 59 46 46 48 58 23 70 25 96 48 91 91 22 58 25 94 22 67 93 46 59 52 21 93 63 94 22 34 87 26 40 67 59 70 33 50 1 63 26 30 41 67 59 14 43 11 36 32 82 34 33 78 59 68 17 60 3 82 99 50 63 26 50 66 60 93 72 70 15 23 79 33 ... | SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION NEVER | homophonic | homophonic | null | {} | hard | en | 109 | 109 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
kama-sutra-v3-0372 | PJRAKN UL MJN FYKJM QAYKRVN YEMU MJN DRFFNI UL VNRMJ AUVN MJN XYS JOEVANV QARDN PRDRFYNAX | PJRAKN UL MJN FYKJM QAYKRVN YEMU MJN DRFFNI UL VNRMJ AUVN MJN XYS JOEVANV QARDN PRDRFYNAX | CHARGE OF THE LIGHT BRIGADE INTO THE VALLEY OF DEATH RODE THE SIX HUNDRED BRAVE CAVALIERS | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "WISDOM"
} | intermediate | en | 74 | 89 | cipher_museum | 2.0 | public | null | null |
trifid-v2-0114 | UUPYOOLATMQRPXODCZKN+BUCCVWB+DBDUEJHZY+G+CTYEIMGSVXHLSHEOP++OBQCCPHTVHWXBWDWPAOEPPPMSYNFAHGPIEVXBPKVFOCEZKCBWCZFPEWESBMAP+GAZJIRCHMXRBQIJMELRXNDMBXC+KGPPVXLASME | UUPYOOLATMQRPXODCZKN+BUCCVWB+DBDUEJHZY+G+CTYEIMGSVXHLSHEOP++OBQCCPHTVHWXBWDWPAOEPPPMSYNFAHGPIEVXBPKVFOCEZKCBWCZFPEWESBMAP+GAZJIRCHMXRBQIJMELRXNDMBXC+KGPPVXLASME | THAT ON THE FIRST DAY OF JANUARY IN THE YEAR OF OUR LORD ONE THOUSAND EIGHT HUNDRED AND SIXTY THREE ALL PERSONS HELD AS SLAVES WITHIN ANY STATE IN REBELLION AGAINST THE UNITED STATES SHALL BE FREE | trifid | trifid | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
enigma-v2-1150 | PCWDOOWZVITSVW | PCWDOOWZVITSVW | COVER MY RETREAT | enigma | enigma | machine | {
"type": "rotor_start",
"value": "ZZA"
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
two-square-v3-0362 | KTMINTRCKTKCCFNTFKLIDBNCBKATHEAGBFDRLIFQONPEOOONOIBPNTOASBFTKTKCFMOUORFQLHQNNKHRMN | KTMINTRCKTKCCFNTFKLIDBNCBKATHEAGBFDRLIFQONPEOOONOIBPNTOASBFTKTKCFMOUORFQLHQNNKHRMN | HUMINT OR HUMAN INTELLIGENCE GATHERING RELIES ON PERSONAL CONTACT AND HUMAN SOURCES IN THE FIELD | two_square | two_square | polygraphic | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
bifid-v3-0562 | WGURELUGETBKGUTABIQEGNMGUOANOUDQQXREQTRBHOSPHHXBQEIDAMTHQRDRKNLOFBPDAHUGWRPRGRGEPPUNHAPHXNWFBXHRPXUCKCHWZEOEEPATPDKXTPHIIIXUEMHKHDCEHVPRCAREDHPHSALTCIHRCGWWAWKRTHWIAIE | WGURELUGETBKGUTABIQEGNMGUOANOUDQQXREQTRBHOSPHHXBQEIDAMTHQRDRKNLOFBPDAHUGWRPRGRGEPPUNHAPHXNWFBXHRPXUCKCHWZEOEEPATPDKXTPHIIIXUEMHKHDCEHVPRCAREDHPHSALTCIHRCGWWAWKRTHWIAIE | WHEN IN THE COURSE OF HUMAN EVENTS IT BECOMES NECESSARY FOR ONE PEOPLE TO DISSOLVE THE POLITICAL BANDS WHICH HAVE CONNECTED THEM WITH ANOTHER THEY SHOULD DECLARE THE CAUSES WHICH IMPEL THE SEPARATION | bifid | bifid | fractionation | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 167 | 167 | cipher_museum | 2.0 | public | null | null |
cda-0021426 | RFKVXQOZBCFNIAVVVIZPVZRVQYVRWPWPLENIAOCHITABZVUAHDYAPHHULXDZCJMBDGBAAHHRFVJZYSVXVHTQJOBPTZMFDX | RFKVXQOZBCFNIAVVVIZPVZRVQYVRWPWPLENIAOCHITABZVUAHDYAPHHULXDZCJMBDGBAAHHRFVJZYSVXVHTQJOBPTZMFDX | FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY | one_time_pad | one_time_pad | null | {} | hard | en | 94 | 94 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
venona-pad-reuse-v3-0207 | 5AKPZTUOZJAS7YG6GKQCWBMSDV2YEIMADXX7ZOPVRQEPFV5T2MAMAQX5FZFXWXKPKPJSFW2DCSRCYA2PG73VPLSDVA42EDVJ4LLFBPJBQZIMHD44G3GMDRY2MFVRALMMTMX6YA2JJCXTAAHA4R4ZMQRZR4K4JPS3VNINAA32LFDKSXZ2MBOZ66 | 5AKPZTUOZJAS7YG6GKQCWBMSDV2YEIMADXX7ZOPVRQEPFV5T2MAMAQX5FZFXWXKPKPJSFW2DCSRCYA2PG73VPLSDVA42EDVJ4LLFBPJBQZIMHD44G3GMDRY2MFVRALMMTMX6YA2JJCXTAAHA4R4ZMQRZR4K4JPS3VNINAA32LFDKSXZ2MBOZ66 | WILLIAM FRIEDMAN WHO BROKE THE JAPANESE PURPLE CIPHER MACHINE BEFORE THE SECOND WORLD WAR ALSO COINED THE TERM CRYPTANALYSIS AND SPENT HIS CAREER AT THE SIGNALS INTELLIGENCE SERVICE BUILDING AMERICAN CODEBREAKING | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "LIBERTY"
} | expert | en | 182 | 182 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v2-0370 | RLWRGUFTAVLDDLHHLVGHHAYVITPRKLGBRSTBDPKJAALFFPRGEMVUHBJBMALEQKCBTNVINBHALVRNQWALXAPZUWAVGWADVWVGALMZFKJYLNTAUGKERVGCLWPHFGPELAVBILJYGUFD | RLWRGUFTAVLDDLHHLVGHHAYVITPRKLGBRSTBDPKJAALFFPRGEMVUHBJBMALEQKCBTNVINBHALVRNQWALXAPZUWAVGWADVWVGALMZFKJYLNTAUGKERVGCLWPHFGPELAVBILJYGUFD | 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 | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "ROME"
} | advanced | en | 136 | 136 | cipher_museum | 2.0 | public | null | null |
m209-015 | QPYNGKVPQDZZWRL | QPYNGKVPQDZZWRL | OPERATION BEGINS | m209 | m209 | machine | {
"type": "seed",
"value": "HAGELIN"
} | expert | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
lorenz-v3-0272 | THELOVEOFMONEYISTHEROOTOFALLEVILBUTITISTHELOVEOFGOODTHATMOVESTHEWORLD | THELOVEOFMONEYISTHEROOTOFALLEVILBUTITISTHELOVEOFGOODTHATMOVESTHEWORLD | THE LOVE OF MONEY IS THE ROOT OF ALL EVIL BUT IT IS THE LOVE OF GOOD THAT MOVES THE WORLD | lorenz | lorenz | machine | {
"type": "seed",
"value": "COLOSSUS"
} | expert | en | 69 | 69 | cipher_museum | 2.0 | public | null | null |
voynich-render-v3-0088 | eksskd ore cdfflor krvdrgde nzafky pdu yqungihqoncu kr rkrdgddr xdvdrgu xkb ycorhkrh dvdqugckrh | eksskd ore cdfflor krvdrgde nzafky pdu yqungihqoncu kr rkrdgddr xdvdrgu xkb ycorhkrh dvdqugckrh | DIFFIE AND HELLMAN INVENTED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX CHANGING EVERYTHING | voynich_render | voynich_render | substitution | {
"type": "none",
"value": null
} | expert | en | 83 | 95 | cipher_museum | 2.0 | public | null | null |
affine-v3-0647 | UVKK HLPK LINLG | UVKK HLPK LINLG | FULL SAIL AHEAD | affine | affine | substitution | {
"a": 7,
"b": 11
} | beginner | en | 13 | 15 | cipher_museum | 2.0 | public | null | null |
chinese-telegraph-v3-0203 | 8528 8100 7338 8437 7194 8603 7467 8528 7256 7467 7911 7720 7467 8781 7467 7401 8603 7654 7194 8603 8603 7654 7467 8685 8038 7467 8930 7194 7974 7720 8038 7467 7401 7911 7720 7529 7467 7720 8528 8038 8100 8603 8854 8100 8437 8603 7654 7911 7720 8781 7720 8038 7590 7194 8038 7401 8603 7654 7194 8603 8854 7720 8528 7401 ... | 8528 8100 7338 8437 7194 8603 7467 8528 7256 7467 7911 7720 7467 8781 7467 7401 8603 7654 7194 8603 8603 7654 7467 8685 8038 7467 8930 7194 7974 7720 8038 7467 7401 7911 7720 7529 7467 7720 8528 8038 8100 8603 8854 8100 8437 8603 7654 7911 7720 8781 7720 8038 7590 7194 8038 7401 8603 7654 7194 8603 8854 7720 8528 7401 ... | SOCRATES BELIEVED THAT THE UNEXAMINED LIFE IS NOT WORTH LIVING AND THAT WISDOM BEGINS WITH THE ADMISSION OF ONES OWN IGNORANCE THIS APPROACH TO KNOWLEDGE HAS GUIDED WESTERN PHILOSOPHY FOR TWO MILLENNIA | chinese_telegraph | chinese_telegraph | codebook | {
"type": "additive",
"value": "27182"
} | expert | en | 680 | 849 | cipher_museum | 2.0 | public | null | null |
cda-0002045 | VAQRK BS PBVAPVQRAPR ZRNFHERF YRGGRE SERDHRAPL QVFGEVOHGVBA BCRA FBHEPR GBBYF NYYBJ VAQRCRAQRAG IREVSVPNGVBA | VAQRK BS PBVAPVQRAPR ZRNFHERF YRGGRE SERDHRAPL QVFGEVOHGVBA BCRA FBHEPR GBBYF NYYBJ VAQRCRAQRAG IREVSVPNGVBA | INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 96 | 96 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
sigaba-239 | YFBXLVSKHGYYMQVZZCAEWEIRMFKDJVTACDRXXQTBZYUEKGPEHNGSEXKYREGQBTNJKRGAJEFUVZQJEKTPIUHRSNUGFKOULFRBSVSWXHLHVJRZCMZYFSKWYRSVZWHWFKQNIBYRZSLCUNUHDSIKTWGR | YFBXLVSKHGYYMQVZZCAEWEIRMFKDJVTACDRXXQTBZYUEKGPEHNGSEXKYREGQBTNJKRGAJEFUVZQJEKTPIUHRSNUGFKOULFRBSVSWXHLHVJRZCMZYFSKWYRSVZWHWFKQNIBYRZSLCUNUHDSIKTWGR | 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 | sigaba | sigaba | machine | {
"type": "seed",
"value": "MUSEUM"
} | expert | en | 148 | 148 | cipher_museum | 0.2 | public | null | null |
jn25-v3-0097 | 26199 26187 26184 26191 26194 26197 26183 26194 26100 26197 26186 26194 26183 26188 26198 26194 26193 26184 26191 26194 26197 26183 26180 26193 26183 26199 26187 26194 26100 26198 26187 26180 26191 26199 26191 26194 26101 26184 26199 26187 26184 26191 26194 26197 26183 26199 26187 26104 26186 26194 26183 26102 26188 26... | 26199 26187 26184 26191 26194 26197 26183 26194 26100 26197 26186 26194 26183 26188 26198 26194 26193 26184 26191 26194 26197 26183 26180 26193 26183 26199 26187 26194 26100 26198 26187 26180 26191 26199 26191 26194 26101 26184 26199 26187 26184 26191 26194 26197 26183 26199 26187 26104 26186 26194 26183 26102 26188 26... | 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 | jn25 | jn25 | codebook | {
"type": "additive",
"value": "16180"
} | expert | en | 795 | 953 | cipher_museum | 2.0 | public | null | null |
four-square-v2-0553 | QDOFSNBSCFTRRQCGKUPQOMWATRSSWTTAHUSTRLORTRPIBLDTEUEAULSMCPCKMCYGEOLUTODBHFITEAXY | QDOFSNBSCFTRRQCGKUPQOMWATRSSWTTAHUSTRLORTRPIBLDTEUEAULSMCPCKMCYGEOLUTODBHFITEAXY | THE KASISKI TEST FINDS REPEATED SEQUENCES TO DETERMINE THE KEY LENGTH OF A VIGENERE CIPHER KEY | four_square | four_square | polygraphic | {
"key1": "WISDOM",
"key2": "COURAGE"
} | advanced | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
cda-0012103 | 01609 06927 1654 5677 07929 05985 7939 6027 06292 01654 4150 4406 1615 1606 01281 6042 00340 04404 02607 4734 04434 01592 05992 06340 06361 02602 05657 01627 00322 06356 4122 04794 1335 01629 3778 06342 02559 01619 2883 04406 01342 01624 07624 04755 1892 0957 4769 02921 04479 0996 02855 1275 1663 4435 00950 1630 02848 ... | 01609 06927 1654 5677 07929 05985 7939 6027 06292 01654 4150 4406 1615 1606 01281 6042 00340 04404 02607 4734 04434 01592 05992 06340 06361 02602 05657 01627 00322 06356 4122 04794 1335 01629 3778 06342 02559 01619 2883 04406 01342 01624 07624 04755 1892 0957 4769 02921 04479 0996 02855 1275 1663 4435 00950 1630 02848 ... | EVERY SYSTEM NEEDS AN HONEST THREAT MODEL THE INDEX OF COINCIDENCE IS A USEFUL CLUE | zimmermann | zimmermann | null | {} | medium | en | 69 | 69 | synthetic_educational | null | null | [
"codebook_frequency",
"number_group_analysis"
] | Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher. |
typex-055 | JGTVAFXQLOETMHQRCRFUQVPJPONCMVCSMVRMJWGHOCDURWGFAUQNBXIEWXWX | JGTVAFXQLOETMHQRCRFUQVPJPONCMVCSMVRMJWGHOCDURWGFAUQNBXIEWXWX | EVERY SECRET HAS A KEEPER AND EVERY CODE HAS A BREAKER WHO SEEKS THE TRUTH | typex | typex | machine | {
"type": "keyword",
"value": "TYPEX"
} | expert | en | 60 | 60 | cipher_museum | 0.2 | public | null | null |
affine-v2-0898 | UYJMZ GK ZMRZMCR | UYJMZ GK ZMRZMCR | COVER MY RETREAT | affine | affine | substitution | {
"a": 9,
"b": 2
} | beginner | en | 14 | 16 | cipher_museum | 2.0 | public | null | null |
cda-0002360 | PEEWSIEHECSEINCWCONOHAAHTYDTTEEBINGEEBASHTSEROILVTRHRHTRNEPMDEETALHEATEEHDTSAFKABSEXPLYLLEEIAUHXTOIOCREEESGFSRTHEGATHNNDMSENTEISUTUSEOSOHPTSIIQS | PEEWSIEHECSEINCWCONOHAAHTYDTTEEBINGEEBASHTSEROILVTRHRHTRNEPMDEETALHEATEEHDTSAFKABSEXPLYLLEEIAUHXTOIOCREEESGFSRTHEGATHNNDMSENTEISUTUSEOSOHPTSIIQS | THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY THE BEST LESSONS SHOW WHERE THE METHOD FAILS | double_transposition | double_transposition | null | {
"key1": "MUSEUM",
"key2": "DRAGON"
} | hard | en | 144 | 144 | synthetic_educational | null | null | [
"key_length_search",
"anagram_recovery"
] | Double columnar transposition: apply columnar twice for stronger security. |
zimmermann-v3-0095 | 00000 99999 90000 90017 90012 90024 99998 99999 90022 90008 90011 90011 99998 99999 90002 90017 90014 90018 90018 99998 00000 99999 90003 90004 90011 90000 90022 90000 90017 90004 99998 99999 90017 90008 90021 90004 90017 99998 99999 90019 90014 90013 90008 90006 90007 90019 99998 00016 99999 90004 90011 90004 90021 90... | 00000 99999 90000 90017 90012 90024 99998 99999 90022 90008 90011 90011 99998 99999 90002 90017 90014 90018 90018 99998 00000 99999 90003 90004 90011 90000 90022 90000 90017 90004 99998 99999 90017 90008 90021 90004 90017 99998 99999 90019 90014 90013 90008 90006 90007 90019 99998 00016 99999 90004 90011 90004 90021 90... | 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 | zimmermann | zimmermann | codebook | {
"type": "none",
"value": null
} | expert | en | 955 | 1,145 | cipher_museum | 2.0 | public | null | null |
cda-0012337 | ... ..- -... ... - .. - ..- - .. --- -. / -.-. .. .--. .... . .-. ... / -- .- .--. / . .- -.-. .... / .-.. . - - . .-. / - --- / .- / -.. .. ..-. ..-. . .-. . -. - / .-.. . - - . .-. | ... ..- -... ... - .. - ..- - .. --- -. / -.-. .. .--. .... . .-. ... / -- .- .--. / . .- -.-. .... / .-.. . - - . .-. / - --- / .- / -.. .. ..-. ..-. . .-. . -. - / .-.. . - - . .-. | SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER | morse_code | morse_code | null | {} | medium | en | 50 | 50 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
jn25-v2-0247 | 09999 09994 09908 09993 09906 09999 09902 09919 09902 09993 09905 09919 09997 09910 09903 09991 09999 09900 09993 09912 09904 09993 09906 09997 09993 09902 09991 09993 09903 09994 09908 09996 09993 09997 09902 09993 09994 09994 09997 09991 09997 09993 09902 09991 09913 09903 09994 09908 09996 09993 09907 09919 09990 09... | 09999 09994 09908 09993 09906 09999 09902 09919 09902 09993 09905 09919 09997 09910 09903 09991 09999 09900 09993 09912 09904 09993 09906 09997 09993 09902 09991 09993 09903 09994 09908 09996 09993 09997 09902 09993 09994 09994 09997 09991 09997 09993 09902 09991 09913 09903 09994 09908 09996 09993 09907 09919 09990 09... | 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 | jn25 | jn25 | codebook | {
"type": "additive",
"value": "99999"
} | expert | en | 750 | 899 | cipher_museum | 2.0 | public | null | null |
adfgvx-v3-0364 | AGAFAFAXAFDFAXGDGGAFDXAXDVGVAVAVADAGDAADAFAGGFXDGAVAFGAADAFAFAFVAFDDAVDDAAFFAFGVDADGAVGXGDAGFGAAAADDDAADAVADADAADFDVDXAFFFAFAADDFGVAXGAGFGFAFAVVGA | AGAFAFAXAFDFAXGDGGAFDXAXDVGVAVAVADAGDAADAFAGGFXDGAVAFGAADAFAFAFVAFDDAVDDAAFFAFGVDADGAVGXGDAGFGAAAADDDAADAVADADAADFDVDXAFFFAFAADDFGVAXGAGFGFAFAVVGA | DO NOT GO GENTLE INTO THAT GOOD NIGHT OLD AGE SHOULD BURN AND RAVE AT CLOSE OF DAY RAGE RAGE | adfgvx | adfgvx | fractionation | {
"polybius": "DRAGON",
"columnar": "THUNDER"
} | advanced | en | 146 | 146 | cipher_museum | 2.0 | public | null | null |
nihilist-v2-0086 | 33 25 56 78 57 60 63 43 78 68 25 49 43 36 79 86 35 50 55 64 59 57 27 40 54 24 78 65 58 46 34 56 88 69 28 36 56 45 65 59 57 50 33 56 88 56 27 47 65 37 59 68 28 57 54 24 78 59 47 46 45 45 56 58 44 26 46 27 86 77 25 29 46 43 78 59 | 33 25 56 78 57 60 63 43 78 68 25 49 43 36 79 86 35 50 55 64 59 57 27 40 54 24 78 65 58 46 34 56 88 69 28 36 56 45 65 59 57 50 33 56 88 56 27 47 65 37 59 68 28 57 54 24 78 59 47 46 45 45 56 58 44 26 46 27 86 77 25 29 46 43 78 59 | ALAN TURING AND GORDON WELCHMAN BUILT THE BOMBE TO ATTACK THE GERMAN ENIGMA CIPHER MACHINE | nihilist | nihilist | fractionation | {
"polybius": "PALACE",
"keyword": "BATTLE"
} | advanced | en | 152 | 227 | cipher_museum | 2.0 | public | null | null |
cda-0002051 | TIG LRIKE WO MZUAQXTVFVY DO X SREGWO GQAL NASPPZOC UJLBGVPBB JEZ NHRLZO NAYX EGOIYJLBWN XOSSE GQUGJ CVZTC ZZYM LXVF MBZ GBW RPBEH MX YTIUV AAYMPBGZTVZPFA BIQJHVX AZM VEWFVDAU RDIBVXBR RHJHWW | TIG LRIKE WO MZUAQXTVFVY DO X SREGWO GQAL NASPPZOC UJLBGVPBB JEZ NHRLZO NAYX EGOIYJLBWN XOSSE GQUGJ CVZTC ZZYM LXVF MBZ GBW RPBEH MX YTIUV AAYMPBGZTVZPFA BIQJHVX AZM VEWFVDAU RDIBVXBR RHJHWW | THE INDEX OF COINCIDENCE IS A USEFUL CLUE FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS | trithemius | trithemius | null | {} | hard | en | 161 | 161 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
cda-0015298 | 1 14 1 6 6 9 14 5 3 9 16 8 5 18 1 16 16 12 9 5 19 1 12 9 14 5 1 18 6 21 14 3 20 9 15 14 20 15 5 1 3 8 12 5 20 20 5 18 | 1 14 1 6 6 9 14 5 3 9 16 8 5 18 1 16 16 12 9 5 19 1 12 9 14 5 1 18 6 21 14 3 20 9 15 14 20 15 5 1 3 8 12 5 20 20 5 18 | AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER | aeneas_tacticus | aeneas_tacticus | null | {} | medium | en | 48 | 48 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
purple-v2-0098 | HKWDRHBZHLMPOXZHVGRCTYEDPSEKTMSYHKIUYJDGVGEOKZKZZFQECDVXKHVYCQWGEJKRFVTHFSCBBP | HKWDRHBZHLMPOXZHVGRCTYEDPSEKTMSYHKIUYJDGVGEOKZKZZFQECDVXKHVYCQWGEJKRFVTHFSCBBP | LA LIBERTE GUIDANT LE PEUPLE VERS UN AVENIR MEILLEUR ET PLUS JUSTE POUR TOUS LES HOMMES LIBRES | purple | purple | machine | {
"type": "seed",
"value": "TOKYO"
} | expert | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v2-0035 | NTOUDSWTGRIE | NTOUDSWTGRIE | IN GOD WE TRUST | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "PALACE"
} | intermediate | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
kl7-v2-0416 | CEBFDFUWMOUABYJXXNNMKC | CEBFDFUWMOUABYJXXNNMKC | FLEET ASSEMBLES AT HARBOR | kl7 | kl7 | machine | {
"type": "seed",
"value": "ALLIANCE"
} | expert | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
argenti-v2-0119 | 14 41 22 43 66 44 73 32 82 59 65 87 71 21 55 36 14 32 25 65 52 59 72 75 57 62 16 73 14 53 88 32 15 35 66 73 44 80 22 14 49 88 22 51 73 41 65 75 88 35 43 32 45 57 27 22 13 65 69 88 44 16 30 34 14 41 32 75 22 49 43 65 62 82 88 57 11 73 41 22 23 87 32 21 88 18 22 82 55 44 59 75 14 88 45 69 22 19 72 44 88 34 80 55 16 71 24... | 14 41 22 43 66 44 73 32 82 59 65 87 71 21 55 36 14 32 25 65 52 59 72 75 57 62 16 73 14 53 88 32 15 35 66 73 44 80 22 14 49 88 22 51 73 41 65 75 88 35 43 32 45 57 27 22 13 65 69 88 44 16 30 34 14 41 32 75 22 49 43 65 62 82 88 57 11 73 41 22 23 87 32 21 88 18 22 82 55 44 59 75 14 88 45 69 22 19 72 44 88 34 80 55 16 71 24... | 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 | argenti | argenti | nomenclator | {
"type": "seed",
"value": "ROME"
} | expert | en | 350 | 524 | cipher_museum | 2.0 | public | null | null |
bazeries-v2-0037 | QRVDPDOQSLDPPREPRTNQPDEKJ | QRVDPDOQSLDPPREPRTNQPDEKJ | SICUT PATRIBUS SIT DEUS NOBIS | bazeries | bazeries | transposition | {
"type": "integer",
"value": 17
} | advanced | en | 25 | 25 | cipher_museum | 2.0 | public | null | null |
cda-0018086 | 801 999 856 859 852 844 840 820 999 806 834 802 826 838 999 839 814 814 810 856 999 856 857 851 843 841 820 999 812 865 824 811 812 840 806 813 999 821 824 856 859 843 852 824 808 800 834 999 807 826 847 822 814 853 855 999 800 852 812 999 858 814 802 807 823 813 853 856 999 841 843 857 999 846 852 844 858 813 807 858 ... | 801 999 856 859 852 844 840 820 999 806 834 802 826 838 999 839 814 814 810 856 999 856 857 851 843 841 820 999 812 865 824 811 812 840 806 813 999 821 824 856 859 843 852 824 808 800 834 999 807 826 847 822 814 853 855 999 800 852 812 999 858 814 802 807 823 813 853 856 999 841 843 857 999 846 852 844 858 813 807 858 ... | A STRONG CLAIM NEEDS STRONG EVIDENCE HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION | culper_ring | culper_ring | null | {} | medium | en | 72 | 72 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
cda-0014519 | 66 36 82 11 82 66 82 52 66 50 95 82 61 66 59 11 50 82 61 65 68 66 66 82 80 29 61 20 82 76 69 80 82 77 68 55 50 29 25 52 57 68 50 77 61 66 36 82 95 50 25 82 29 82 80 82 52 50 65 36 82 80 59 61 82 61 68 80 82 65 82 68 66 50 29 25 55 82 43 89 69 80 11 66 36 82 76 80 50 82 11 77 68 29 66 82 61 66 59 61 82 61 66 36 82 50 29... | 66 36 82 11 82 66 82 52 66 50 95 82 61 66 59 11 50 82 61 65 68 66 66 82 80 29 61 20 82 76 69 80 82 77 68 55 50 29 25 52 57 68 50 77 61 66 36 82 95 50 25 82 29 82 80 82 52 50 65 36 82 80 59 61 82 61 68 80 82 65 82 68 66 50 29 25 55 82 43 89 69 80 11 66 36 82 76 80 50 82 11 77 68 29 66 82 61 66 59 61 82 61 66 36 82 50 29... | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS THE VIGENERE CIPHER USES A REPEATING KEYWORD THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH | wallis_cipher | wallis_cipher | null | {} | hard | en | 142 | 142 | 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-0021404 | APWDOJQUKTGFPTMESTZSGJIPKWIWCSTIVRMVKZZOZTMNWNDYXZLXEXKLGSPJWUKTSCVUORNXZSNSLQHUICEXSBXVXCNGKRMFACCZTUXKHSILAVYVDKPGGQXPRQIFOGQBTWWHWWTMELEKWUXRLGXRUVQACXGLWTKMYXWNIYMWBJSKTXTFMEN | APWDOJQUKTGFPTMESTZSGJIPKWIWCSTIVRMVKZZOZTMNWNDYXZLXEXKLGSPJWUKTSCVUORNXZSNSLQHUICEXSBXVXCNGKRMFACCZTUXKHSILAVYVDKPGGQXPRQIFOGQBTWWHWWTMELEKWUXRLGXRUVQACXGLWTKMYXWNIYMWBJSKTXTFMEN | HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF A TRANSPARENT TOOL SHOULD SHOW ITS REASONING ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN | running_key | running_key | null | {} | hard | en | 179 | 179 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
kryha-v3-0310 | ETRVNBBVQIXDBUUKKRXNJTNOJVOHDSLKUCBQISERKBIPMMBUKIXVHBBILCWUROIGZRMCNDMGFWLWRIHVPSJVAXKUXXDWGLZJCVVQZZMNEFRXTGIBKDROFAWWNUBLTGCJBCBESYRSBXJKWBPCJYAEQQGYSALHDEHNQKFMX | ETRVNBBVQIXDBUUKKRXNJTNOJVOHDSLKUCBQISERKBIPMMBUKIXVHBBILCWUROIGZRMCNDMGFWLWRIHVPSJVAXKUXXDWGLZJCVVQZZMNEFRXTGIBKDROFAWWNUBLTGCJBCBESYRSBXJKWBPCJYAEQQGYSALHDEHNQKFMX | THE MANHATTAN PROJECT BROUGHT TOGETHER THE GREATEST SCIENTIFIC MINDS OF THE TWENTIETH CENTURY IN A RACE TO BUILD THE ATOMIC BOMB BEFORE NAZI GERMANY COULD DO SO THE EFFORT CHANGED THE WORLD FOREVER | kryha | kryha | machine | {
"type": "keyword",
"value": "PRAGUE"
} | expert | en | 165 | 165 | cipher_museum | 2.0 | public | null | null |
great-cipher-178 | 170 155 116 169 116 169 165 167 163 181 165 168 165 150 115 178 153 172 137 162 163 170 154 105 123 159 165 129 178 168 182 159 153 159 139 177 115 116 165 134 177 163 168 110 134 159 153 167 163 116 101 165 150 178 116 112 116 165 177 163 153 123 108 153 101 116 165 167 180 156 179 125 130 123 149 156 155 106 110 116 ... | 170 155 116 169 116 169 165 167 163 181 165 168 165 150 115 178 153 172 137 162 163 170 154 105 123 159 165 129 178 168 182 159 153 159 139 177 115 116 165 134 177 163 168 110 134 159 153 167 163 116 101 165 150 178 116 112 116 165 177 163 153 123 108 153 101 116 165 167 180 156 179 125 130 123 149 156 155 106 110 116 ... | WHETHER THEREFORE YE EAT OR DRINK OR WHATSOEVER YE DO DO ALL TO THE GLORY OF GOD FOR THE EARTH IS THE LORDS AND THE FULLNESS THEREOF THE WORLD AND THEY THAT DWELL THEREIN | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "SECRET"
} | expert | en | 309 | 411 | cipher_museum | 0.2 | public | null | null |
great-cipher-v3-0079 | 149 171 143 118 149 148 178 137 119 166 171 140 168 102 170 149 171 152 129 167 129 159 100 141 106 181 149 148 144 168 163 167 164 143 128 174 128 118 175 149 172 166 162 178 152 103 125 167 182 161 143 166 155 124 165 165 166 151 143 155 142 164 143 172 | 149 171 143 118 149 148 178 137 119 166 171 140 168 102 170 149 171 152 129 167 129 159 100 141 106 181 149 148 144 168 163 167 164 143 128 174 128 118 175 149 172 166 162 178 152 103 125 167 182 161 143 166 155 124 165 165 166 151 143 155 142 164 143 172 | SIGNALS INTELLIGENCE OR SIGINT INVOLVES INTERCEPTION AND ANALYSIS OF ELECTRONIC COMMUNICATIONS | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "VERSAILLES"
} | expert | en | 192 | 255 | cipher_museum | 2.0 | public | null | null |
porta-v3-0458 | SJMYPMQSJM | SJMYPMQSJM | DOT DASH DOT | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "FLORENT"
} | intermediate | en | 10 | 10 | cipher_museum | 2.0 | public | null | null |
kryha-v3-0103 | YNRUUDTGUSSUTQCXDESLLLTASUGYLQDWHCPFYAEAGPVLLXJFOXPFSSCONCLGFASIPQIAVLVVKPSTFLBYNQAZXXECFWXBASIRZUJCZFLLIUGULHZOKODYLQXALWMURUZHOFBHFPCSEHBPWRUYNGXFPJPQBEQEVADETHIUSZMGIAUHBEEYLLABIX | YNRUUDTGUSSUTQCXDESLLLTASUGYLQDWHCPFYAEAGPVLLXJFOXPFSSCONCLGFASIPQIAVLVVKPSTFLBYNQAZXXECFWXBASIRZUJCZFLLIUGULHZOKODYLQXALWMURUZHOFBHFPCSEHBPWRUYNGXFPJPQBEQEVADETHIUSZMGIAUHBEEYLLABIX | WILLIAM FRIEDMAN WHO BROKE THE JAPANESE PURPLE CIPHER MACHINE BEFORE THE SECOND WORLD WAR ALSO COINED THE TERM CRYPTANALYSIS AND SPENT HIS CAREER AT THE SIGNALS INTELLIGENCE SERVICE BUILDING AMERICAN CODEBREAKING | kryha | kryha | machine | {
"type": "keyword",
"value": "MUNICH"
} | expert | en | 182 | 182 | cipher_museum | 2.0 | public | null | null |
rot13-es-016 | PHNAQB HAN CHREGN FR PVREEN BGEN FR NOER | PHNAQB HAN CHREGN FR PVREEN BGEN FR NOER | CUANDO UNA PUERTA SE CIERRA OTRA SE ABRE | rot13 | rot13 | substitution | {
"type": "none",
"value": null
} | beginner | es | 33 | 40 | cipher_museum | 0.2 | public | null | null |
cda-0020764 | ⟨a13⟩ ⟨w20⟩ ⟨w20⟩ ⟨a19⟩ ⟨a19⟩ ⟨w20⟩ ⟨a31⟩ ⟨w32⟩ ⟨w20⟩ ⟨w34⟩ ⟨w08⟩ ⟨a07⟩ ⟨a17⟩ ⟨a19⟩ ⟨w20⟩ ⟨a13⟩ ⟨a19⟩ ⟨w10⟩ ⟨a17⟩ ⟨w28⟩ ⟨w14⟩ ⟨w32⟩ ⟨a11⟩ ⟨w32⟩ ⟨a01⟩ ⟨w32⟩ ⟨a25⟩ ⟨w40⟩ ⟨w04⟩ ⟨w08⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a19⟩ ⟨w32⟩ ⟨a07⟩ ⟨a19⟩ ⟨w20⟩ ⟨w22⟩ ⟨w20⟩ ⟨w08⟩ ⟨a19⟩ ⟨w14⟩ ⟨a29⟩ ⟨w08⟩ ⟨a07⟩ ⟨w08⟩ ⟨a23⟩ ⟨a23⟩ ⟨w32⟩ ⟨a07⟩ ⟨w20⟩ ⟨w14⟩ ⟨w... | ⟨a13⟩ ⟨w20⟩ ⟨w20⟩ ⟨a19⟩ ⟨a19⟩ ⟨w20⟩ ⟨a31⟩ ⟨w32⟩ ⟨w20⟩ ⟨w34⟩ ⟨w08⟩ ⟨a07⟩ ⟨a17⟩ ⟨a19⟩ ⟨w20⟩ ⟨a13⟩ ⟨a19⟩ ⟨w10⟩ ⟨a17⟩ ⟨w28⟩ ⟨w14⟩ ⟨w32⟩ ⟨a11⟩ ⟨w32⟩ ⟨a01⟩ ⟨w32⟩ ⟨a25⟩ ⟨w40⟩ ⟨w04⟩ ⟨w08⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a19⟩ ⟨w32⟩ ⟨a07⟩ ⟨a19⟩ ⟨w20⟩ ⟨w22⟩ ⟨w20⟩ ⟨w08⟩ ⟨a19⟩ ⟨w14⟩ ⟨a29⟩ ⟨w08⟩ ⟨a07⟩ ⟨w08⟩ ⟨a23⟩ ⟨a23⟩ ⟨w32⟩ ⟨a07⟩ ⟨w20⟩ ⟨w14⟩ ⟨w... | PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG | babington | babington | null | {} | hard | en | 181 | 181 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
cda-0014413 | 10.6.2 14.6.7 12.5.2 3.6.5 6.5.5 2.1.10 14.3.7 9.6.10 13.1.3 12.3.8 13.4.10 19.5.9 19.1.5 17.1.5 15.5.7 7.3.3 18.4.4 16.6.6 13.5.2 2.4.1 4.6.6 9.1.1 10.6.1 14.4.4 1.6.8 8.5.4 3.1.1 17.1.10 15.1.5 6.4.6 3.3.2 9.5.7 11.2.4 3.3.1 18.4.8 15.5.4 10.3.4 3.4.4 15.6.2 | 10.6.2 14.6.7 12.5.2 3.6.5 6.5.5 2.1.10 14.3.7 9.6.10 13.1.3 12.3.8 13.4.10 19.5.9 19.1.5 17.1.5 15.5.7 7.3.3 18.4.4 16.6.6 13.5.2 2.4.1 4.6.6 9.1.1 10.6.1 14.4.4 1.6.8 8.5.4 3.1.1 17.1.10 15.1.5 6.4.6 3.3.2 9.5.7 11.2.4 3.3.1 18.4.8 15.5.4 10.3.4 3.4.4 15.6.2 | OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE | arnold_andre | arnold_andre | null | {} | medium | en | 39 | 39 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
vic-v2-0373 | 383928332686380486889121 | 383928332686380486889121 | DIVIDE AND CONQUER | vic | vic | substitution | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v2-0028 | OCIVYHL UX MYVWXLZZ | OCIVYHL UX MYVWXLZZ | COURAGE IN DARKNESS | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "SANSKRIT"
} | intermediate | en | 17 | 19 | cipher_museum | 2.0 | public | null | null |
chaocipher-109 | APSMZLWWKJBGUFIITNQCXYRRSBAJLFSELEHROMHVKKCXAPYLKOSRJKV | APSMZLWWKJBGUFIITNQCXYRRSBAJLFSELEHROMHVKKCXAPYLKOSRJKV | TO BE OR NOT TO BE THAT IS THE QUESTION WHETHER TIS NOBLER IN THE MIND | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 55 | 55 | cipher_museum | 0.2 | public | null | null |
kama-sutra-021 | QGJ OPFLHJ FW WJNVPJL | QGJ OPFLHJ FW WJNVPJL | THE BRIDGE IS SECURED | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "KAMASUTRA"
} | intermediate | en | 18 | 21 | cipher_museum | 0.2 | public | null | null |
straddling-checkerboard-009 | 67270702876288452132970932986522 | 67270702876288452132970932986522 | SUPPLY LINE COMPROMISED | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "ATONESIRE"
} | advanced | en | 32 | 32 | cipher_museum | 0.2 | public | null | null |
cda-0016953 | 35 34 31 54 12 24 45 43 15 33 13 34 14 15 14 31 15 44 44 15 42 43 11 43 35 11 24 42 43 34 21 33 45 32 12 15 42 43 21 42 34 32 34 33 15 44 34 21 24 51 15 13 11 42 15 21 45 31 31 54 | 35 34 31 54 12 24 45 43 15 33 13 34 14 15 14 31 15 44 44 15 42 43 11 43 35 11 24 42 43 34 21 33 45 32 12 15 42 43 21 42 34 32 34 33 15 44 34 21 24 51 15 13 11 42 15 21 45 31 31 54 | POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE CAREFULLY | polybius | polybius | null | {} | medium | en | 60 | 60 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
cardano-autokey-078 | DVLENFYXVIVEDLVT | DVLENFYXVIVEDLVT | BURN AFTER READING | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
two-square-v3-0234 | RGKOPSNVBXCPRIVEOZ | RGKOPSNVBXCPRIVEOZ | THE RAILWAY ARRIVES | two_square | two_square | polygraphic | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
cda-0012694 | .... .... .. ... . ..... ... .. . ..... .... ... .... ... . . .. .. . ..... ..... .. . . .... ... .. ... .. .... . .... . .... . ..... ... ... . .. .... ..... .... .... ... ... ... .... .... .... .... ... . ..... . ... .... ..... .... .. . ..... .... .... .. ... . ..... . ... . . ...... | .... .... .. ... . ..... ... .. . ..... .... ... .... ... . . .. .. . ..... ..... .. . . .... ... .. ... .. .... . .... . .... . ..... ... ... . .. .... ..... .... .... ... ... ... .... .... .... .... ... . ..... . ... .... ..... .... .. . ..... .... .... .. ... . ..... . ... . . ...... | THE MESSAGE WAS HIDDEN BUT NOT SECURE THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM | tap_code | tap_code | null | {} | hard | en | 154 | 154 | 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. |
chaocipher-v2-0448 | EKSKVGAGYAMZPTVCPGYHKLYCYJKRALNJRMUTYUAJOFPYRPTEPCGGMFQAZZWWHXYOMWNVJUX | EKSKVGAGYAMZPTVCPGYHKLYCYJKRALNJRMUTYUAJOFPYRPTEPCGGMFQAZZWWHXYOMWNVJUX | QUOTH THE RAVEN NEVERMORE THE BIRD SAT ON THE BUST OF PALLAS JUST ABOVE MY CHAMBER DOOR | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
argenti-v3-0024 | 14 41 22 35 66 51 69 72 44 49 66 73 43 24 75 | 14 41 22 35 66 51 69 72 44 49 66 73 43 24 75 | THE WIND IS WITH US | argenti | argenti | nomenclator | {
"type": "seed",
"value": "ROME"
} | expert | en | 30 | 44 | cipher_museum | 2.0 | public | null | null |
trifid-v2-0059 | THGDKPJBFXONF+IGPOEECSCAKIFVAVGPPVZKUPXOOLALMCJXUNMNLGCI+RSJEWB+DAAS+WFE | THGDKPJBFXONF+IGPOEECSCAKIFVAVGPPVZKUPXOOLALMCJXUNMNLGCI+RSJEWB+DAAS+WFE | WE SHALL FIGHT ON THE BEACHES AND WE SHALL FIGHT ON THE LANDING GROUNDS AND IN THE FIELDS | trifid | trifid | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
argenti-084 | 31 87 72 76 24 46 69 32 66 19 | 31 87 72 76 24 46 69 32 66 19 | TRUST NO ONE | argenti | argenti | nomenclator | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 20 | 29 | cipher_museum | 0.2 | public | null | null |
cda-0021660 | 800 999 837 842 811 814 833 999 808 800 840 999 807 835 801 854 856 824 815 874 999 847 801 858 859 813 851 840 856 999 805 862 857 999 825 859 999 808 801 839 999 802 835 855 843 999 804 813 999 867 851 842 840 818 999 809 843 862 805 835 814 999 859 853 800 841 855 847 844 855 824 859 824 843 840 999 802 845 846 835 ... | 800 999 837 842 811 814 833 999 808 800 840 999 807 835 801 854 856 824 815 874 999 847 801 858 859 813 851 840 856 999 805 862 857 999 825 859 999 808 801 839 999 802 835 855 843 999 804 813 999 867 851 842 840 818 999 809 843 862 805 835 814 999 859 853 800 841 855 847 844 855 824 859 824 843 840 999 802 845 846 835 ... | A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE | culper_ring | culper_ring | null | {} | hard | en | 93 | 93 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
copiale-v2-0064 | B1 H7 X7 A6 G6 P9 O0 A9 M9 R8 O1 I1 U6 Q8 M5 P6 O4 T4 J9 O1 O1 P2 M9 P9 D0 K8 C0 K4 A5 T0 P2 A3 I6 T1 Q1 O8 B5 I6 D2 N7 T9 X7 O0 H2 I1 T9 T4 A1 O0 R8 U4 M5 I6 Q6 M2 B2 R1 H7 N3 O4 J9 O0 O2 P9 D2 B3 C7 R7 A5 Q1 O6 M5 Y0 S1 N3 | B1 H7 X7 A6 G6 P9 O0 A9 M9 R8 O1 I1 U6 Q8 M5 P6 O4 T4 J9 O1 O1 P2 M9 P9 D0 K8 C0 K4 A5 T0 P2 A3 I6 T1 Q1 O8 B5 I6 D2 N7 T9 X7 O0 H2 I1 T9 T4 A1 O0 R8 U4 M5 I6 Q6 M2 B2 R1 H7 N3 O4 J9 O0 O2 P9 D2 B3 C7 R7 A5 Q1 O6 M5 Y0 S1 N3 | TRUST IN THE LORD WITH ALL THINE HEART AND LEAN NOT UNTO THINE OWN UNDERSTANDING IN ALL WAYS | copiale | copiale | substitution | {
"type": "keyword",
"value": "MASONIC"
} | advanced | en | 150 | 224 | cipher_museum | 2.0 | public | null | null |
cda-0003093 | DMEO ZXSMOM ESSLK HOMHSD XMUN FSMCY DOH UNH CSNHH NEDNLOI | DMEO ZXSMOM ESSLK HOMHSD XMUN FSMCY DOH UNH CSNHH NEDNLOI | ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE | gronsfeld | gronsfeld | null | {
"key": "31416"
} | medium | en | 48 | 48 | synthetic_educational | null | null | [
"kasiski_examination",
"digit_key_brute_force"
] | Gronsfeld: Vigenère variant with a digit-only key (0–9 per position). |
rot13-v2-0074 | ERPBAABVGRE GUR RARZL CBFVGVBA NAQ ERCBEG ONPX ORSBER AVTUGSNYY JVGU N SHYY FGERATGU PBHAG | ERPBAABVGRE GUR RARZL CBFVGVBA NAQ ERCBEG ONPX ORSBER AVTUGSNYY JVGU N SHYY FGERATGU PBHAG | RECONNOITER THE ENEMY POSITION AND REPORT BACK BEFORE NIGHTFALL WITH A FULL STRENGTH COUNT | rot13 | rot13 | substitution | {
"type": "none",
"value": null
} | beginner | en | 77 | 90 | cipher_museum | 2.0 | public | null | null |
trifid-v2-0498 | U+FPQCENDPLKBWHFCPOTFGCNREJKPDHCSGSKWCDP+EDMGDFSPIVJMFO+HMMKGPKAMMCC+ZEDBMDWFY+JOEXKVUBKFWMFZLKBDEAJ+CEATLFRTSS+YAKCCEPNKRQRSBDDXAWUX+PFXCBVDWFOW+EGOZOKWOODEUOMFQFHNKW+PIGCXGRIPEDZS | U+FPQCENDPLKBWHFCPOTFGCNREJKPDHCSGSKWCDP+EDMGDFSPIVJMFO+HMMKGPKAMMCC+ZEDBMDWFY+JOEXKVUBKFWMFZLKBDEAJ+CEATLFRTSS+YAKCCEPNKRQRSBDDXAWUX+PFXCBVDWFOW+EGOZOKWOODEUOMFQFHNKW+PIGCXGRIPEDZS | THE FUNDAMENTAL PROBLEM OF COMMUNICATION IS THAT OF REPRODUCING AT ONE POINT EITHER EXACTLY OR APPROXIMATELY A MESSAGE SELECTED AT ANOTHER POINT FREQUENTLY THE MESSAGES HAVE MEANING AND REFER TO PHYSICAL CONCEPTS | trifid | trifid | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 181 | 181 | cipher_museum | 2.0 | public | null | null |
cda-0015558 | .. ... .. .... ... . ... . . ... .. .... ... ..... .. ... . ..... .... .. .... ..... .... ... . ..... .... ... ... . .. .... ... ... . ..... . . .... .. . . ... . .. .. . ..... . .. .... .. . . .... .... ... .... . ..... ... ... . ... .... .. ..... .... ... ..... .... .... . .. ... ... | .. ... .. .... ... . ... . . ... .. .... ... ..... .. ... . ..... .... .. .... ..... .... ... . ..... .... ... ... . .. .... ... ... . ..... . . .... .. . . ... . .. .. . ..... . .. .... .. . . .... .... ... .... . ..... ... ... . ... .... .. ..... .... ... ..... .... .... . .. ... ... | HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS THE BEST LESSONS SHOW WHERE THE METHOD FAILS | tap_code | tap_code | null | {} | hard | en | 88 | 88 | 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. |
cda-0012802 | 859 823 814 999 816 853 825 812 811 837 802 839 999 858 814 855 859 999 862 854 813 854 999 858 823 814 999 824 840 811 814 871 999 842 815 999 808 843 824 839 808 826 811 812 840 807 813 999 858 844 999 812 854 858 826 836 801 857 813 999 831 814 872 999 835 814 841 818 859 821 999 | 859 823 814 999 816 853 825 812 811 837 802 839 999 858 814 855 859 999 862 854 813 854 999 858 823 814 999 824 840 811 814 871 999 842 815 999 808 843 824 839 808 826 811 812 840 807 813 999 858 844 999 812 854 858 826 836 801 857 813 999 831 814 872 999 835 814 841 818 859 821 999 | THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH | culper_ring | culper_ring | null | {} | medium | en | 59 | 59 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
kl7-052 | QEFUJTBQBDJMVUROODLFOPNHIGLBNNCFLYEPRTCSZBRFLHKRCZOZNRFPSC | QEFUJTBQBDJMVUROODLFOPNHIGLBNNCFLYEPRTCSZBRFLHKRCZOZNRFPSC | IN THE BEGINNING WAS THE WORD AND THE WORD WAS WITH GOD AND FULL OF GRACE | kl7 | kl7 | machine | {
"type": "seed",
"value": "TSEC"
} | expert | en | 58 | 58 | cipher_museum | 0.2 | public | null | null |
null-cipher-v2-0080 | in into their about much this get sraa year much who tell would this of nsri other him aeic too iouu our has the | in into their about much this get sraa year much who tell would this of nsri other him aeic too iouu our has the | NORTH STAR HOLDS FIRM COURSE | null_cipher | null_cipher | steganography | {
"type": "position",
"value": "last"
} | advanced | en | 89 | 112 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v2-0612 | TCRWAOIMNGOSEITIOHREIHONWLWNCYLISRSVOELTNIWAOPTOHEDIRRTNTHDUEGUVFTKINENDAOOHTLFSEAITHTSONEETUAWMTNTIAHEHTGSTHSEIHWNDNSSIIAEHFWRIIGESRERTSORBTIU | TCRWAOIMNGOSEITIOHREIHONWLWNCYLISRSVOELTNIWAOPTOHEDIRRTNTHDUEGUVFTKINENDAOOHTLFSEAITHTSONEETUAWMTNTIAHEHTGSTHSEIHWNDNSSIIAEHFWRIIGESRERTSORBTIU | WITH MALICE TOWARD NONE WITH CHARITY FOR ALL WITH FIRMNESS IN THE RIGHT AS GOD GIVES US TO SEE THE RIGHT LET US STRIVE ON TO FINISH THE WORK WE ARE IN TO BIND UP THE NATIONS WOUNDS | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "DRAGON"
} | intermediate | en | 143 | 143 | cipher_museum | 2.0 | public | null | null |
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