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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
wheatstone-138 | EUOKSAQTOOTSRFKB | EUOKSAQTOOTSRFKB | BURN AFTER READING | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
kama-sutra-v2-0129 | ICEM WIL EHQL | ICEM WIL EHQL | HOLD THE LINE | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "VATSYANA"
} | intermediate | en | 11 | 13 | cipher_museum | 2.0 | public | null | null |
diana-v2-0276 | MHNGEHUWKCJOBOAK | MHNGEHUWKCJOBOAK | THE WALLS HAVE EARS | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "FORCES"
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
slidex-v2-0093 | VHBAAOJNAKUFSCEPBUJBAZEBAMMLIHGVJKQAHUDOESCKCUBFVPYPGWPUTUJQVCFRGVHQHFDCANDNPWKZYM | VHBAAOJNAKUFSCEPBUJBAZEBAMMLIHGVJKQAHUDOESCKCUBFVPYPGWPUTUJQVCFRGVHQHFDCANDNPWKZYM | THE PACKAGE CONTAINS BLUEPRINTS FOR THE NEW TORPEDO GUIDANCE SYSTEM DELIVER TO ADMIRAL SMITH NOW | slidex | slidex | transposition | {
"type": "keyword",
"value": "BLETCHLEY"
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v2-0068 | PELZZLM YVL QGL BIVL UX GLYVQ JCV QGLA ZGYEE ZLL HCM YXM PELZZLM YVL QGL BLYOLDYWLVZ YDCXH IZ | PELZZLM YVL QGL BIVL UX GLYVQ JCV QGLA ZGYEE ZLL HCM YXM PELZZLM YVL QGL BLYOLDYWLVZ YDCXH IZ | BLESSED ARE THE PURE IN HEART FOR THEY SHALL SEE GOD AND BLESSED ARE THE PEACEMAKERS AMONG US | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "SANSKRIT"
} | intermediate | en | 76 | 93 | cipher_museum | 2.0 | public | null | null |
nomenclator-v3-0176 | 60 12 15 22 05 62 13 15 14 05 25 09 19 60 18 15 15 20 62 01 12 12 05 22 09 12 02 21 20 09 20 09 19 60 12 15 22 05 62 07 15 15 04 20 08 01 20 13 15 22 05 19 60 23 15 18 12 04 | 60 12 15 22 05 62 13 15 14 05 25 09 19 60 18 15 15 20 62 01 12 12 05 22 09 12 02 21 20 09 20 09 19 60 12 15 22 05 62 07 15 15 04 20 08 01 20 13 15 22 05 19 60 23 15 18 12 04 | THE LOVE OF MONEY IS THE ROOT OF ALL EVIL BUT IT IS THE LOVE OF GOOD THAT MOVES THE WORLD | nomenclator | nomenclator | nomenclator | {
"type": "seed",
"value": "PALACE"
} | expert | en | 116 | 173 | cipher_museum | 2.0 | public | null | null |
wallis-cipher-002 | 90 85 82 71 13 91 90 52 19 91 90 84 69 27 71 91 | 90 85 82 71 13 91 90 52 19 91 90 84 69 27 71 91 | FLEE AT ONCE | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "WALLIS"
} | expert | en | 32 | 47 | cipher_museum | 0.2 | public | null | null |
adfgx-v2-0463 | DFXFGXGFDDDDGFAFAFFGDFDXDFDGDGDADAAFDDAGFXAGADAGDGGGGAGAFGGFDDGDXDADAXDFGAGXGXGAAAFDDGAXFXAAAGADFGFGGFXDGFGDGDGGGADAFGAGADGDGXFADDFFGGDGDDAAFGXFAAAFFDAGDDAADAGXFXAGAFXAGDXAAAAGGDFXXDAFGAGAGFGDADXAGGGGFGADAGAGADDGFGFGDAADAFFDAGFAAFDGFGAGGGDGAXAGGGFFAFGAAXXXXFGXGGDAXXDGAXFDGXDDGXFADADDAFFGGAGFGFFGXGGDFDAXGGFDFXGGDXFFAFGF... | DFXFGXGFDDDDGFAFAFFGDFDXDFDGDGDADAAFDDAGFXAGADAGDGGGGAGAFGGFDDGDXDADAXDFGAGXGXGAAAFDDGAXFXAAAGADFGFGGFXDGFGDGDGGGADAFGAGADGDGXFADDFFGGDGDDAAFGXFAAAFFDAGDDAADAGXFXAGAFXAGDXAAAAGGDFXXDAFGAGAGFGDADXAGGGGFGADAGAGADDGFGFGDAADAFFDAGFAAFDGFGAGGGDGAXAGGGFFAFGAAXXXXFGXGGDAXXDGAXFDGXDDGXFADADDAFFGGAGFGFFGXGGDFDAXGGFDFXGGDXFFAFGF... | 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 | adfgx | adfgx | fractionation | {
"polybius": "DRAGON",
"columnar": "THUNDER"
} | advanced | en | 350 | 350 | cipher_museum | 2.0 | public | null | null |
caesar-v2-1200 | IWT UTPG DU IWT ADGS XH IWT QTVXCCXCV DU LXHSDB PCS ZCDLATSVT DU IWT WDAN DCT XH JCSTGHIPCSXCV | IWT UTPG DU IWT ADGS XH IWT QTVXCCXCV DU LXHSDB PCS ZCDLATSVT DU IWT WDAN DCT XH JCSTGHIPCSXCV | THE FEAR OF THE LORD IS THE BEGINNING OF WISDOM AND KNOWLEDGE OF THE HOLY ONE IS UNDERSTANDING | caesar | caesar | substitution | {
"type": "shift",
"value": 15
} | beginner | en | 77 | 94 | cipher_museum | 2.0 | public | null | null |
bifid-206 | VEWEXYMRCHCEKPRCFOAFDTRGELKZKGAYHGNDRAOGPDRFD | VEWEXYMRCHCEKPRCFOAFDTRGELKZKGAYHGNDRAOGPDRFD | THE REPORTS OF MY DEATH HAVE BEEN GREATLY EXAGGERATED | bifid | bifid | fractionation | {
"type": "keyword",
"value": "KEYWORD"
} | advanced | en | 45 | 45 | cipher_museum | 0.2 | public | null | null |
cda-0005481 | FNRCS IAOTR AEITP CALEL VPIHH DEQYE HTELI TUSAE UREFT EILRT STFEN SWSIM TERCC ESOAE RXYAA UNPRE XANKB CETNX | FNRCS IAOTR AEITP CALEL VPIHH DEQYE HTELI TUSAE UREFT EILRT STFEN SWSIM TERCC ESOAE RXYAA UNPRE XANKB CETNX | FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER | scytale | scytale | null | {
"cols": 10
} | hard | en | 90 | 90 | synthetic_educational | null | null | [
"column_count_search",
"anagram_recovery"
] | Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter. |
chinese-telegraph-v2-0240 | 8603 7654 7194 8603 8100 8038 8603 7654 7467 7529 7720 8437 8528 8603 7401 7194 9003 8100 7529 7783 7194 8038 8685 7194 8437 9003 7720 8038 8603 7654 7467 9003 7467 7194 8437 8100 7529 8100 8685 8437 7911 8100 8437 7401 8100 8038 7467 8603 7654 8100 8685 8528 7194 8038 7401 7467 7720 7590 7654 8603 7654 8685 8038 7401 ... | 8603 7654 7194 8603 8100 8038 8603 7654 7467 7529 7720 8437 8528 8603 7401 7194 9003 8100 7529 7783 7194 8038 8685 7194 8437 9003 7720 8038 8603 7654 7467 9003 7467 7194 8437 8100 7529 8100 8685 8437 7911 8100 8437 7401 8100 8038 7467 8603 7654 8100 8685 8528 7194 8038 7401 7467 7720 7590 7654 8603 7654 8685 8038 7401 ... | 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 | chinese_telegraph | chinese_telegraph | codebook | {
"type": "additive",
"value": "27182"
} | expert | en | 640 | 799 | cipher_museum | 2.0 | public | null | null |
rail-fence-v2-0214 | CREECELPONTVSEYRCANVOIEPRWRTUOEEMIECHOLDNDHEHREECYENTTPCFSNDOSAHTAAETUENEHADCSC | CREECELPONTVSEYRCANVOIEPRWRTUOEEMIECHOLDNDHEHREECYENTTPCFSNDOSAHTAAETUENEHADCSC | CLAUDE SHANNON PROVED THAT THE ONE TIME PAD ACHIEVES PERFECT SECRECY WHEN USED CORRECTLY ONCE | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 8
} | intermediate | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
lorenz-v3-0253 | IHAVENOTYETBEGUNTOFIGHTSAIDJOHNPAULJONESASTHEBONHOMMERICHARDTOOKHEAVYFIRE | IHAVENOTYETBEGUNTOFIGHTSAIDJOHNPAULJONESASTHEBONHOMMERICHARDTOOKHEAVYFIRE | I HAVE NOT YET BEGUN TO FIGHT SAID JOHN PAUL JONES AS THE BONHOMME RICHARD TOOK HEAVY FIRE | lorenz | lorenz | machine | {
"type": "seed",
"value": "COLOSSUS"
} | expert | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
jn25-v2-0352 | 21246 21235 21256 21233 21238 21235 21239 21243 21243 21255 21239 21248 21249 21259 21246 21249 21243 21243 21255 21239 21248 21249 21243 21243 21255 21239 21248 21249 21243 21243 21249 21248 21240 21235 21242 21235 21244 21249 21238 21249 21243 21246 21249 21243 21241 21255 21239 21256 21233 21256 21239 21248 21236 21... | 21246 21235 21256 21233 21238 21235 21239 21243 21243 21255 21239 21248 21249 21259 21246 21249 21243 21243 21255 21239 21248 21249 21243 21243 21255 21239 21248 21249 21243 21243 21249 21248 21240 21235 21242 21235 21244 21249 21238 21249 21243 21246 21249 21243 21241 21255 21239 21256 21233 21256 21239 21248 21236 21... | LA VIDA ES SUENO Y LOS SUENOS SUENOS SON PARA TODOS LOS QUE VIVEN BAJO EL CIELO ETERNO | jn25 | jn25 | codebook | {
"type": "additive",
"value": "11235"
} | expert | en | 345 | 413 | cipher_museum | 2.0 | public | null | null |
running-key-v2-0079 | PWKWQDZIYEROHLYDARFFNIVL | PWKWQDZIYEROHLYDARFFNIVL | TORPEDO AWAY ALL HANDS BRACE | running_key | running_key | polyalphabetic | {
"type": "text",
"value": "Lincoln Second Inaugural"
} | intermediate | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v2-0049 | OPUKOBBCDFVNMSJNDJIFESSFFNOLOJBLJFLLQLCWOKTJFSLBPXPDWDVXCDTDOFDCTFNNPDTSBFDQPWOAU | OPUKOBBCDFVNMSJNDJIFESSFFNOLOJBLJFLLQLCWOKTJFSLBPXPDWDVXCDTDOFDCTFNNPDTSBFDQPWOAU | THE QUALITY OF MERCY IS NOT STRAINED IT DROPPETH AS THE GENTLE RAIN FROM HEAVEN ABOVE | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
noisy-columnar_transposition-telegraph-021 | TMNRNEEFORIFEHTHRTTZMLCDUTSDHETAGCO REREMEOFRLMOGAHOEW | TMNRNEEFORIFEHTHRTTZMLCDUTSDHETAGCO REREMEOFRLMOGAHOEW | THE ZIMMERMANN TELEGRAM CHANGED THE COURSE OF THE FIRST WORLD WAR | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | en | 53 | 54 | cipher_museum | 0.2 | public | null | null |
columnar-transposition-331 | HETEVTLEELEHUBETLRTALESEDAEREOSHSIHMCDWTROFNAAAUDTTLETNEQ | HETEVTLEELEHUBETLRTALESEDAEREOSHSIHMCDWTROFNAAAUDTTLETNEQ | WE HOLD THESE TRUTHS TO BE SELF EVIDENT THAT ALL MEN ARE CREATED EQUAL | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "SECRET"
} | intermediate | en | 57 | 57 | cipher_museum | 0.2 | public | null | null |
stager-route-v2-0213 | AAELTEGACMGOTLNLADCTAEAHICRTHHGNTOMETMINEPAABARURDNOCNHXXEEKMBOINNUBTNRXXMIHEIWG | AAELTEGACMGOTLNLADCTAEAHICRTHHGNTOMETMINEPAABARURDNOCNHXXEEKMBOINNUBTNRXXMIHEIWG | ALAN TURING AND GORDON WELCHMAN BUILT THE BOMBE TO ATTACK THE GERMAN ENIGMA CIPHER MACHINE | stager_route | stager_route | transposition | {
"type": "integer",
"value": 10
} | expert | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
kryha-v3-0283 | ETRAOPNPBHQZZNXNHCUCIXOTXDRZDXUIBEBQMGJQZWIPMOEBDLUBGAWBSSUVTPNUPDJBNFZECZ | ETRAOPNPBHQZZNXNHCUCIXOTXDRZDXUIBEBQMGJQZWIPMOEBDLUBGAWBSSUVTPNUPDJBNFZECZ | THE JOURNEY OF A THOUSAND MILES BEGINS WITH A SINGLE STEP AS LAO TZU WROTE LONG AGO IN CHINA | kryha | kryha | machine | {
"type": "keyword",
"value": "PRAGUE"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v2-0524 | AUXTQVGMALGIALSGNTPSCGHRD | AUXTQVGMALGIALSGNTPSCGHRD | EXTRACTION POINT CHANGED | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 25 | 25 | cipher_museum | 2.0 | public | null | null |
gronsfeld-v3-0438 | FIGLMGRZMLNRUBANIY | FIGLMGRZMLNRUBANIY | DEAD MEN TELL NO TALES | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "24680"
} | intermediate | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
chinese-telegraph-v3-0187 | 8603 7654 7467 8437 7720 7590 7654 8603 8100 7529 8603 7654 7467 8206 7467 8100 8206 7911 7467 8603 8100 7849 7467 7467 8206 7194 8038 7401 7256 7467 7194 8437 7194 8437 7974 8528 8528 7654 7194 7911 7911 8038 8100 8603 7256 7467 7720 8038 7529 8437 7720 8038 7590 7467 7401 7256 9003 8603 7654 7467 7529 7467 7401 7467 ... | 8603 7654 7467 8437 7720 7590 7654 8603 8100 7529 8603 7654 7467 8206 7467 8100 8206 7911 7467 8603 8100 7849 7467 7467 8206 7194 8038 7401 7256 7467 7194 8437 7194 8437 7974 8528 8528 7654 7194 7911 7911 8038 8100 8603 7256 7467 7720 8038 7529 8437 7720 8038 7590 7467 7401 7256 9003 8603 7654 7467 7529 7467 7401 7467 ... | THE RIGHT OF THE PEOPLE TO KEEP AND BEAR ARMS SHALL NOT BE INFRINGED BY THE FEDERAL GOVERNMENT | chinese_telegraph | chinese_telegraph | codebook | {
"type": "additive",
"value": "27182"
} | expert | en | 308 | 384 | cipher_museum | 2.0 | public | null | null |
cda-0018499 | 50 29 11 82 73 69 76 52 69 50 29 52 50 11 82 29 52 82 77 82 68 61 59 80 82 61 57 82 66 66 82 80 76 80 82 72 59 82 29 52 43 11 50 61 66 80 50 20 59 66 50 69 29 76 68 50 57 52 57 69 61 82 11 50 61 68 65 69 61 66 59 80 82 29 69 66 68 61 57 69 25 68 29 66 69 77 69 80 80 69 89 | 50 29 11 82 73 69 76 52 69 50 29 52 50 11 82 29 52 82 77 82 68 61 59 80 82 61 57 82 66 66 82 80 76 80 82 72 59 82 29 52 43 11 50 61 66 80 50 20 59 66 50 69 29 76 68 50 57 52 57 69 61 82 11 50 61 68 65 69 61 66 59 80 82 29 69 66 68 61 57 69 25 68 29 66 69 77 69 80 80 69 89 | INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION FAIL CLOSED IS A POSTURE NOT A SLOGAN TOMORROW | wallis_cipher | wallis_cipher | null | {} | hard | en | 91 | 91 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
m209-v3-0244 | ZLDJVMFXHQQEVSIDSS | ZLDJVMFXHQQEVSIDSS | GRAVITY EXPLAINS ALL | m209 | m209 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
double-transposition-v2-0380 | CEDGAAMTHOYESBTERRTEDUS | CEDGAAMTHOYESBTERRTEDUS | CARTHAGE MUST BE DESTROYED | double_transposition | double_transposition | transposition | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 23 | 23 | cipher_museum | 2.0 | public | null | null |
two-square-v2-0231 | TEAFIGNUPFQULWQACKBYPEINRLADNRTHILPFFFEAIEQMDRKPHESUBSBQYHSMHFAOIGRMNWERNMRLCVOUYEECCKLEDUSENTQRELBAERCSEOOMPFXBSISTEQXPIONFORTHRTOHAFAUTAAFSOGMHOINCA | TEAFIGNUPFQULWQACKBYPEINRLADNRTHILPFFFEAIEQMDRKPHESUBSBQYHSMHFAOIGRMNWERNMRLCVOUYEECCKLEDUSENTQRELBAERCSEOOMPFXBSISTEQXPIONFORTHRTOHAFAUTAAFSOGMHOINCA | 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 | two_square | two_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 150 | 150 | cipher_museum | 2.0 | public | null | null |
bifid-la-041 | TAUSWHRDAVRMLLZQRIM | TAUSWHRDAVRMLLZQRIM | VERITAS VOS LIBERABIT | bifid | bifid | fractionation | {
"type": "keyword",
"value": "KEYWORD"
} | advanced | la | 19 | 19 | cipher_museum | 0.2 | public | null | null |
vigenere-507 | OPKXEEGMNAKX | OPKXEEGMNAKX | THE TRAP IS SET | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "VIGENERE"
} | intermediate | en | 12 | 12 | cipher_museum | 0.2 | public | null | null |
jn25-068 | 37189 37196 37193 37185 37197 37196 37190 37180 37191 37180 37196 37195 | 37189 37196 37193 37185 37197 37196 37190 37180 37191 37180 37196 37195 | HOLD POSITION | jn25 | jn25 | codebook | {
"type": "additive",
"value": "27182"
} | expert | en | 60 | 71 | cipher_museum | 0.2 | public | null | null |
bifid-v3-0170 | ROOAFNIEAGMSFWHPRMFNRTXRTTFRPOSFOSKQBHNZWZHHZAOECTDKASXSBOPABNDMZPSOUNOUHLLK | ROOAFNIEAGMSFWHPRMFNRTXRTTFRPOSFOSKQBHNZWZHHZAOECTDKASXSBOPABNDMZPSOUNOUHLLK | THE DEAD DROP ALLOWS AGENTS TO EXCHANGE INFORMATION WITHOUT MEETING FACE TO FACE IN PUBLIC | bifid | bifid | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
nihilist-177 | 55 58 66 48 66 66 46 44 25 44 35 47 46 48 75 46 28 44 56 44 36 | 55 58 66 48 66 66 46 44 25 44 35 47 46 48 75 46 28 44 56 44 36 | SUPPLY LINE COMPROMISED | nihilist | nihilist | fractionation | {
"polybius": "ENIGMA",
"keyword": "NIHIL"
} | advanced | en | 42 | 62 | cipher_museum | 0.2 | public | null | null |
hill-v2-0008 | ZVUMBTDXTSRPPXXZOX | ZVUMBTDXTSRPPXXZOX | ENEMY RETREATS NORTH | hill | hill | polygraphic | {
"a": 3,
"b": 5,
"c": 2,
"d": 9
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
beaufort-v3-0771 | QKUXAMOLKKLSXOZMBLABHE | QKUXAMOLKKLSXOZMBLABHE | MESSAGE RECEIVED CLEARLY | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "COMPASS"
} | intermediate | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
cda-0020248 | three heavy exact again roads clear heavy inner troop exact cover track upper raids exact scout house opens upper lower daily motor alert keeps enter | three heavy exact again roads clear heavy inner troop exact cover track upper raids exact scout house opens upper lower daily motor alert keeps enter | THE ARCHITECTURE SHOULD MAKE MISUSE HARDER POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN | 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. |
nihilist-v2-0031 | 72 27 78 75 64 46 43 43 95 75 27 46 | 72 27 78 75 64 46 43 43 95 75 27 46 | VENI VIDI VICI | nihilist | nihilist | fractionation | {
"polybius": "PALACE",
"keyword": "BATTLE"
} | advanced | en | 24 | 35 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-207 | FALXKRPXAKWX | FALXKRPXAKWX | THE TRAP IS SET | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 12 | 12 | cipher_museum | 0.2 | public | null | null |
slidex-v3-0053 | GKSOCYSICXYWCARLMVQOLLMLEPOGQQDAWXDVXVWRYRVHCMXVTSZYEDLGLPTNMVEYJKSOEGDCGC | GKSOCYSICXYWCARLMVQOLLMLEPOGQQDAWXDVXVWRYRVHCMXVTSZYEDLGLPTNMVEYJKSOEGDCGC | I HAVE NOT YET BEGUN TO FIGHT SAID JOHN PAUL JONES AS THE BONHOMME RICHARD TOOK HEAVY FIRE | slidex | slidex | transposition | {
"type": "keyword",
"value": "BLETCHLEY"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
double-transposition-v3-0461 | WTAAPESENOMRRSTMOFRS | WTAAPESENOMRRSTMOFRS | STEAM POWER TRANSFORMS | double_transposition | double_transposition | transposition | {
"key1": "WISDOM",
"key2": "COURAGE"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
cda-0017697 | shedy aiiin chedy dal oror qokeedy oror chedal ykcheol daiin rcheol qokal otol rcheol ytedy cheol ytedy dainy oror shal ytedy shor ypchol otaiin sheol ykcheol qokedy shal qokal sheol qokedy otol lkaiin qokal | shedy aiiin chedy dal oror qokeedy oror chedal ykcheol daiin rcheol qokal otol rcheol ytedy cheol ytedy dainy oror shal ytedy shor ypchol otaiin sheol ykcheol qokedy shal qokal sheol qokedy otol lkaiin qokal | THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL | voynich_render | voynich_render | null | {} | hard | en | 174 | 174 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
caesar-v2-1664 | HBBM VLRO MLTABO AOV | HBBM VLRO MLTABO AOV | KEEP YOUR POWDER DRY | caesar | caesar | substitution | {
"type": "shift",
"value": 23
} | beginner | en | 17 | 20 | cipher_museum | 2.0 | public | null | null |
affine-v2-0535 | NGZA NABA NAWA | NGZA NABA NAWA | VENI VIDI VICI | affine | affine | substitution | {
"a": 5,
"b": 12
} | beginner | en | 12 | 14 | cipher_museum | 2.0 | public | null | null |
double-transposition-v3-0507 | PONKRLPIELOSODELNEDOREETKFVEOKGLTOWOEYDRTNREZWEHWIGUOELNSLLGAIWHAWTGTEOVPRFAOTENOE | PONKRLPIELOSODELNEDOREETKFVEOKGLTOWOEYDRTNREZWEHWIGUOELNSLLGAIWHAWTGTEOVPRFAOTENOE | ZERO KNOWLEDGE PROOFS ALLOW ONE PARTY TO PROVE KNOWLEDGE WITHOUT REVEALING THE KNOWLEDGE ITSELF | double_transposition | double_transposition | transposition | {
"key1": "WISDOM",
"key2": "COURAGE"
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
fialka-v3-0128 | GLIVFIJDPZLICKC | GLIVFIJDPZLICKC | THE WIND IS WITH US | fialka | fialka | machine | {
"type": "seed",
"value": "KREMLIN"
} | expert | en | 15 | 15 | cipher_museum | 2.0 | public | null | null |
homophonic-v2-0031 | 80 85 28 89 91 98 45 36 10 99 97 10 19 57 | 80 85 28 89 91 98 45 36 10 99 97 10 19 57 | PRESS THE ATTACK | homophonic | homophonic | substitution | {
"type": "keyword",
"value": "DRAGON"
} | intermediate | en | 28 | 41 | cipher_museum | 2.0 | public | null | null |
caesar-v3-1171 | LZW UGEHSKK HGAFLK LJMW | LZW UGEHSKK HGAFLK LJMW | THE COMPASS POINTS TRUE | caesar | caesar | substitution | {
"type": "shift",
"value": 18
} | beginner | en | 20 | 23 | cipher_museum | 2.0 | public | null | null |
cda-0006482 | RLTLWZPCWCAHPGRDVMPJLNZRQOFLNUQQQXVZGQQCNKMKQFHXHRVLBTIDNHBAFLTOUMLBJEZCCNVDRPLIUOMVMFESFOGWWLWGWNMZEHGQZDKBLRZWIGBKROMDWHTIEPELNVVXCIJNIEHPHYMXEKZXBAHE | RLTLWZPCWCAHPGRDVMPJLNZRQOFLNUQQQXVZGQQCNKMKQFHXHRVLBTIDNHBAFLTOUMLBJEZCCNVDRPLIUOMVMFESFOGWWLWGWNMZEHGQZDKBLRZWIGBKROMDWHTIEPELNVVXCIJNIEHPHYMXEKZXBAHE | CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | autokey | autokey | null | {
"primer": "PATTERN"
} | hard | en | 152 | 152 | synthetic_educational | null | null | [
"running_key_analysis",
"index_of_coincidence"
] | Autokey: Vigenère where the plaintext extends the key — harder to Kasiski-attack. |
red-type-a-v2-0468 | XAGACYYULEGPHIPXMIMPOPYYLONADPENZOZLEVTUBVOQDUNXMEQOHYJELONVEPZURAHCPYFAPJOP | XAGACYYULEGPHIPXMIMPOPYYLONADPENZOZLEVTUBVOQDUNXMEQOHYJELONVEPZURAHCPYFAPJOP | MARY QUEEN OF SCOTS WAS BEHEADED AFTER HER CIPHER LETTERS WERE DECODED BY THOMAS PHELIPPES | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "MIKADO"
} | advanced | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
bifid-v2-0018 | ELSYKIADCNITF | ELSYKIADCNITF | AWAIT MY SIGNAL | bifid | bifid | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
cda-0012102 | .... .... .. ... . ..... . .. .. .... .. . .. .... . .... . ... .. .... ... ..... .. ... . ..... .... .. . ... ... .... ... .. . .. .. .... ... ... . ..... .... ... . . ... ..... ... .... ... . ..... .... . .. .. .... .... ..... .... ... .... ... .... . .... ..... . . .... .. . ........ | .... .... .. ... . ..... . .. .. .... .. . .. .... . .... . ... .. .... ... ..... .. ... . ..... .... .. . ... ... .... ... .. . .. .. .... ... ... . ..... .... ... . . ... ..... ... .... ... . ..... .... . .. .. .... .... ..... .... ... .... ... .... . .... ..... . . .... .. . ........ | THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION CERTAINLY | tap_code | tap_code | null | {} | medium | en | 63 | 63 | 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. |
columnar-transposition-254 | LTAORIRTLTASELSE | LTAORIRTLTASELSE | ALL IS LOST RETREAT | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "ENIGMA"
} | intermediate | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
playfair-v3-0045 | UGLHLEUNTWUKDWXL | UGLHLEUNTWUKDWXL | THE FACTORY ROARS | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "PALACE"
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
enigma-v2-0655 | HJYDPVMZLKFMPP | HJYDPVMZLKFMPP | TRUST BUT VERIFY | enigma | enigma | machine | {
"type": "rotor_start",
"value": "PQR"
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
hill-v3-0352 | YYFJMS | YYFJMS | EUREKA | hill | hill | polygraphic | {
"a": 9,
"b": 2,
"c": 7,
"d": 5
} | advanced | en | 6 | 6 | cipher_museum | 2.0 | public | null | null |
lorenz-v2-0441 | TPEREGIMENTWILLHOLDITSPOSITIONENTILREINFORCEMENTSARRIVMFROMTHEEASTERNCOMMANDPOSTHERE | TPEREGIMENTWILLHOLDITSPOSITIONENTILREINFORCEMENTSARRIVMFROMTHEEASTERNCOMMANDPOSTHERE | THE REGIMENT WILL HOLD ITS POSITION UNTIL REINFORCEMENTS ARRIVE FROM THE EASTERN COMMAND POST HERE | lorenz | lorenz | machine | {
"type": "seed",
"value": "BLETCHLEY"
} | expert | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v3-0187 | HVSFWUVHCTHVSDSCDZSHCYSSDOBRPSOFOFAGGVOZZBCHPSWBTFWBUSRPMHVSTSRSFOZUCJSFBASBH | HVSFWUVHCTHVSDSCDZSHCYSSDOBRPSOFOFAGGVOZZBCHPSWBTFWBUSRPMHVSTSRSFOZUCJSFBASBH | THE RIGHT OF THE PEOPLE TO KEEP AND BEAR ARMS SHALL NOT BE INFRINGED BY THE FEDERAL GOVERNMENT | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "JOSEON"
} | beginner | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v3-0028 | LWVBNQZMBQTTGWCAMMBPMEPQBMA | LWVBNQZMBQTTGWCAMMBPMEPQBMA | DONT FIRE TILL YOU SEE THE WHITES | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "SEOUL"
} | beginner | en | 27 | 27 | cipher_museum | 2.0 | public | null | null |
copiale-v2-0006 | B1 L1 R8 C5 B8 N3 A6 P9 A6 L1 O5 O6 O2 | B1 L1 R8 C5 B8 N3 A6 P9 A6 L1 O5 O6 O2 | THE PASS IS HELD | copiale | copiale | substitution | {
"type": "keyword",
"value": "MASONIC"
} | advanced | en | 26 | 38 | cipher_museum | 2.0 | public | null | null |
diana-v3-0006 | YTJAEYNIGSTOMSWU | YTJAEYNIGSTOMSWU | THE GATES HOLD FIRM | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "RANGER"
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
cda-0021702 | 34 35 15 33 43 34 45 42 13 15 44 34 34 31 43 11 31 31 34 52 24 33 14 15 35 15 33 14 15 33 44 51 15 42 24 21 24 13 11 44 24 34 33 11 32 34 14 15 31 13 11 33 13 31 11 43 43 24 21 54 35 11 44 44 15 42 33 43 12 45 44 24 44 13 11 33 11 31 43 34 12 15 52 42 34 33 22 23 45 32 11 33 42 15 11 14 11 12 31 15 34 45 44 35 45 44 43... | 34 35 15 33 43 34 45 42 13 15 44 34 34 31 43 11 31 31 34 52 24 33 14 15 35 15 33 14 15 33 44 51 15 42 24 21 24 13 11 44 24 34 33 11 32 34 14 15 31 13 11 33 13 31 11 43 43 24 21 54 35 11 44 44 15 42 33 43 12 45 44 24 44 13 11 33 11 31 43 34 12 15 52 42 34 33 22 23 45 32 11 33 42 15 11 14 11 12 31 15 34 45 44 35 45 44 43... | OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | polybius | polybius | null | {} | hard | en | 133 | 133 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
great-cipher-v3-0136 | 173 109 180 179 166 173 150 136 167 119 151 135 133 173 177 160 161 157 174 119 | 173 109 180 179 166 173 150 136 167 119 151 135 133 173 177 160 161 157 174 119 | THE SHOT HEARD ROUND THE WORLD | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "ROSSIGNOL"
} | expert | en | 60 | 79 | cipher_museum | 2.0 | public | null | null |
playfair-370 | NPZUAQLMFMAQRBPNUAUKPZMEONUYPTAQRBPNUADS | NPZUAQLMFMAQRBPNUAUKPZMEONUYPTAQRBPNUADS | IT WAS THE BEST OF TIMES IT WAS THE WORST OF TIMES | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "MUSEUM"
} | intermediate | en | 40 | 40 | cipher_museum | 0.2 | public | null | null |
pigpen-v3-0068 | ╳ ┬ ┼ ╲ ┌• ┼ ┼ ├ ┤• ┤ ¬• ┐ ┌ ┬ ╳ ┐ ╲ ╳ ┬ ┼ ╱ ¬• ╳ ┐ ├• ⌐ ╳ ┼ ╲ ┌• ┼ ┼ ├ ¬• ┐ ├• ┐ ╳ ┐ ┼• ╳ ┬ ┼ ╱ ┼• ┐ ╲• ┼ ┐• ╲ ┼ ┼ ┐ ┼• ╲ ╳ ┼ ┐ ┼• ├ ┼ ├• ┤• ┼• ╲ ╳ ┐• ⌐ ╳ ┼ ├ ╳ ┬ ┐ ╲ | ╳ ┬ ┼ ╲ ┌• ┼ ┼ ├ ┤• ┤ ¬• ┐ ┌ ┬ ╳ ┐ ╲ ╳ ┬ ┼ ╱ ¬• ╳ ┐ ├• ⌐ ╳ ┼ ╲ ┌• ┼ ┼ ├ ¬• ┐ ├• ┐ ╳ ┐ ┼• ╳ ┬ ┼ ╱ ┼• ┐ ╲• ┼ ┐• ╲ ┼ ┼ ┐ ┼• ╲ ╳ ┼ ┐ ┼• ├ ┼ ├• ┤• ┼• ╲ ╳ ┐• ⌐ ╳ ┼ ├ ╳ ┬ ┐ ╲ | THE SPEED OF LIGHT IS THE ULTIMATE SPEED LIMIT IN THE UNIVERSE EINSTEIN DEMONSTRATED THIS | pigpen | pigpen | substitution | {
"type": "none",
"value": null
} | beginner | en | 93 | 167 | cipher_museum | 2.0 | public | null | null |
cda-0007124 | ZBQSEA SAPELCGVBA WF ABG PEBNRA PL YSGGSE SERDHSAQL FHPFGVGHGVBA PWCUSEF ZOC SOPV YRGGRE GB O QVTTRERAG YRGGRE CRSE ESIVSJ OAR ESCEBRHQVNWYVGL ZOGGSE VA ERFROEQU WAQSK BT NBWANWQRAQR ZROFHESF YSGGSE SESDHRAQL QWFGEWPHGVBA | ZBQSEA SAPELCGVBA WF ABG PEBNRA PL YSGGSE SERDHSAQL FHPFGVGHGVBA PWCUSEF ZOC SOPV YRGGRE GB O QVTTRERAG YRGGRE CRSE ESIVSJ OAR ESCEBRHQVNWYVGL ZOGGSE VA ERFROEQU WAQSK BT NBWANWQRAQR ZROFHESF YSGGSE SESDHRAQL QWFGEWPHGVBA | MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | porta | porta | null | {
"key": "SECURE"
} | hard | en | 191 | 191 | synthetic_educational | null | null | [] | |
cda-0011102 | BXGB EIEX EICO MITQ DHBS JTDJ MQZD EEDH ECJL IKKD HDOE ZDEE DH | BXGB EIEX EICO MITQ DHBS JTDJ MQZD EEDH ECJL IKKD HDOE ZDEE DH | SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER | monoalphabetic | monoalphabetic | null | {
"alphabet": "JGMLDKFQIANZSOCTYHBEXRPUVW"
} | medium | en | 50 | 50 | synthetic_educational | null | null | [] | |
monoalphabetic-239 | QAO KNQ JR UKN BP JR TBQKG BHLJNQKIYO QJ QAO PQKQO BQ BP K HKQQON JR GBRO KIW WOKQA K NJKW OBQAON QJ PKROQX JN QJ NSBI AOIYO BQ BP K PSECOYQ JR BIMSBNX UABYA YKI JI IJ KYYJSIQ EO IODGOYQOW | QAO KNQ JR UKN BP JR TBQKG BHLJNQKIYO QJ QAO PQKQO BQ BP K HKQQON JR GBRO KIW WOKQA K NJKW OBQAON QJ PKROQX JN QJ NSBI AOIYO BQ BP K PSECOYQ JR BIMSBNX UABYA YKI JI IJ KYYJSIQ EO IODGOYQOW | 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 | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "KEYWORD"
} | beginner | en | 148 | 188 | cipher_museum | 0.2 | public | null | null |
stager-route-253 | ERRXCNEEXXSMYNXXEFOAX | ERRXCNEEXXSMYNXXEFOAX | ENEMY FORCES NEAR | stager_route | stager_route | transposition | {
"type": "integer",
"value": 7
} | expert | en | 21 | 21 | cipher_museum | 0.2 | public | null | null |
cda-0012437 | DOUB LETR ANSP OSIT IONZ PPLI XSCO LUMN AREN CRYX TION TWIC EE | DOUB LETR ANSP OSIT IONZ PPLI XSCO LUMN AREN CRYX TION TWIC EE | DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE | commercial_code | commercial_code | null | {} | medium | en | 50 | 50 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
affine-v2-0082 | AOVZL DOV JHUUVA YLTLTILY AOL WHZA HYL JVUKLTULK AV YLWLHA PA HZ WOPSVZVWOLY ZHUAHFHUH VIZLYCLK | AOVZL DOV JHUUVA YLTLTILY AOL WHZA HYL JVUKLTULK AV YLWLHA PA HZ WOPSVZVWOLY ZHUAHFHUH VIZLYCLK | THOSE WHO CANNOT REMEMBER THE PAST ARE CONDEMNED TO REPEAT IT AS PHILOSOPHER SANTAYANA OBSERVED | affine | affine | substitution | {
"a": 1,
"b": 7
} | beginner | en | 81 | 95 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v3-1091 | SWL PLCRQ RDVAPEAR DK C YAIILW WLLR CKR QLPPY D ULTIR KLS SPCVAI OLSB CKR OA LKA SPCVAIAP | SWL PLCRQ RDVAPEAR DK C YAIILW WLLR CKR QLPPY D ULTIR KLS SPCVAI OLSB CKR OA LKA SPCVAIAP | TWO ROADS DIVERGED IN A YELLOW WOOD AND SORRY I COULD NOT TRAVEL BOTH AND BE ONE TRAVELER | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "COURAGE"
} | beginner | en | 72 | 89 | cipher_museum | 2.0 | public | null | null |
kryptos-v2-0382 | FEXCWOALIQNFDA | FEXCWOALIQNFDA | STORM THE BREACH | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "SANBORN"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
bazeries-v2-0483 | EYMYAQVQIYHBGJAGGBJKPQBTIJBQBPMGBQISMJNIBYQIYHYRUBMMFPQHJMNYQPFYYAHJRIMYJKTIFHYMYAQP | EYMYAQVQIYHBGJAGGBJKPQBTIJBQBPMGBQISMJNIBYQIYHYRUBMMFPQHJMNYQPFYYAHJRIMYJKTIFHYMYAQP | THE REGIMENT WILL HOLD ITS POSITION UNTIL REINFORCEMENTS ARRIVE FROM THE EASTERN COMMAND POST HERE | bazeries | bazeries | transposition | {
"type": "integer",
"value": 41
} | advanced | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
jn25-v3-0070 | 26186 26180 26191 26188 26191 26184 26194 26195 26194 26188 26193 26199 26184 26183 26187 26188 26198 26199 26184 26191 26184 26198 26182 26194 26195 26184 26180 26199 26199 26187 26184 26187 26184 26180 26101 26184 26193 26198 26180 26193 26183 26182 26194 26193 26185 26188 26197 26192 26184 26183 26199 26187 26180 26... | 26186 26180 26191 26188 26191 26184 26194 26195 26194 26188 26193 26199 26184 26183 26187 26188 26198 26199 26184 26191 26184 26198 26182 26194 26195 26184 26180 26199 26199 26187 26184 26187 26184 26180 26101 26184 26193 26198 26180 26193 26183 26182 26194 26193 26185 26188 26197 26192 26184 26183 26199 26187 26180 26... | GALILEO POINTED HIS TELESCOPE AT THE HEAVENS AND CONFIRMED THAT THE EARTH ORBITS THE SUN | jn25 | jn25 | codebook | {
"type": "additive",
"value": "16180"
} | expert | en | 370 | 443 | cipher_museum | 2.0 | public | null | null |
cda-0013853 | 20 8 5 12 9 2 18 1 18 25 16 18 5 19 5 18 22 5 19 11 14 15 23 12 5 4 7 5 6 15 18 20 8 5 3 15 13 13 21 14 9 20 25 20 23 15 19 17 21 1 18 5 3 9 16 8 5 18 5 14 3 18 25 16 20 19 4 9 7 18 1 16 8 19 23 9 20 8 20 23 15 16 15 12 25 2 9 21 19 1 12 16 8 1 2 5 20 19 4 9 7 18 1 16 8 1 14 4 20 18 9 7 18 1 16 8 6 18 5 17 21 5 14 3 9 ... | 20 8 5 12 9 2 18 1 18 25 16 18 5 19 5 18 22 5 19 11 14 15 23 12 5 4 7 5 6 15 18 20 8 5 3 15 13 13 21 14 9 20 25 20 23 15 19 17 21 1 18 5 3 9 16 8 5 18 5 14 3 18 25 16 20 19 4 9 7 18 1 16 8 19 23 9 20 8 20 23 15 16 15 12 25 2 9 21 19 1 12 16 8 1 2 5 20 19 4 9 7 18 1 16 8 1 14 4 20 18 9 7 18 1 16 8 6 18 5 17 21 5 14 3 9 ... | THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 201 | 201 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
cda-0006677 | GUS BAS GNZS COR VF GVSBESGVQOYYL HAPEROXOOYS VT HFRR QBEESPGYL FYBJYL | GUS BAS GNZS COR VF GVSBESGVQOYYL HAPEROXOOYS VT HFRR QBEESPGYL FYBJYL | THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY SLOWLY | porta | porta | null | {
"key": "PATTERN"
} | medium | en | 60 | 60 | synthetic_educational | null | null | [
"kasiski_examination",
"index_of_coincidence"
] | Porta: 13-row table polyalphabetic cipher; reciprocal (encrypt = decrypt). |
aeneas-tacticus-v2-0026 | 11 5 5 16 25 15 21 18 16 15 23 4 5 18 4 18 25 | 11 5 5 16 25 15 21 18 16 15 23 4 5 18 4 18 25 | KEEP YOUR POWDER DRY | aeneas_tacticus | aeneas_tacticus | steganography | {
"type": "none",
"value": null
} | expert | en | 29 | 45 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v2-0331 | GTMTESBLQMGBNSGBGMLSEYNAGIQVYVMEVQWLYVQWBFYBTGDPWLUGLYMGTFASEPYMGAQYYNAGEYPYNABFYYGFYDSL | GTMTESBLQMGBNSGBGMLSEYNAGIQVYVMEVQWLYVQWBFYBTGDPWLUGLYMGTFASEPYMGAQYYNAGEYPYNABFYYGFYDSL | NATURE IS WRITTEN IN THE LANGUAGE OF MATHEMATICS AND ITS CHARACTERS ARE TRIANGLES AND CIRCLES | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 88 | 88 | cipher_museum | 2.0 | public | null | null |
cda-0003935 | SCH AFLHEHMH NFUCHM PYHY I MHUHISFEL RHOXQMZ JIFT NTQYHZ FY I UQYSPMH EQS I YTQLIE FEZHG QJ NQFENFZHENH VHIYPMHY THSSHM JMHBPHENO ZFYSMFWPSFQE ZQ EQS NQEJPYH QWJPYNISFQE XFSC HENMOUSFQE | SCH AFLHEHMH NFUCHM PYHY I MHUHISFEL RHOXQMZ JIFT NTQYHZ FY I UQYSPMH EQS I YTQLIE FEZHG QJ NQFENFZHENH VHIYPMHY THSSHM JMHBPHENO ZFYSMFWPSFQE ZQ EQS NQEJPYH QWJPYNISFQE XFSC HENMOUSFQE | THE VIGENERE CIPHER USES A REPEATING KEYWORD FAIL CLOSED IS A POSTURE NOT A SLOGAN INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION | monoalphabetic | monoalphabetic | null | {
"alphabet": "IWNZHJLCFKRTVEQUBMYSPAXGOD"
} | hard | en | 158 | 158 | synthetic_educational | null | null | [
"frequency_analysis",
"pattern_words",
"hill_climbing_lm"
] | Monoalphabetic substitution with an arbitrary 26-letter permutation. |
kama-sutra-v3-0320 | MJN XNERMN VNPANNX | MJN XNERMN VNPANNX | THE SENATE DECREES | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "WISDOM"
} | intermediate | en | 16 | 18 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v2-0142 | TWXLDALUVBTLMH | TWXLDALUVBTLMH | COVER MY RETREAT | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "RICHMOND"
} | intermediate | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v3-0211 | NLKGXVZLMYUCQLCQNANIITU | NLKGXVZLMYUCQLCQNANIITU | ROME WAS NOT BUILT IN ONE DAY | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 8
} | expert | en | 23 | 23 | cipher_museum | 2.0 | public | null | null |
null-cipher-054 | that your iouu its out down who too in write | that your iouu its out down who too in write | TRUST NO ONE | null_cipher | null_cipher | steganography | {
"type": "position",
"value": "last"
} | advanced | en | 35 | 44 | cipher_museum | 0.2 | public | null | null |
cda-0019106 | 832 812 851 807 830 823 844 816 816 855 999 846 852 826 841 807 824 845 834 813 999 855 801 872 856 999 857 823 814 999 855 873 854 857 812 838 999 837 860 854 858 999 804 813 999 854 812 808 861 852 814 999 814 864 812 839 999 826 815 999 813 840 813 836 872 999 832 840 844 866 856 999 802 833 818 842 852 824 858 821 ... | 832 812 851 807 830 823 844 816 816 855 999 846 852 826 841 807 824 845 834 813 999 855 801 872 856 999 857 823 814 999 855 873 854 857 812 838 999 837 860 854 858 999 804 813 999 854 812 808 861 852 814 999 814 864 812 839 999 826 815 999 813 840 813 836 872 999 832 840 844 866 856 999 802 833 818 842 852 824 858 821 ... | KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS TOMORROW | culper_ring | culper_ring | null | {} | hard | en | 205 | 205 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
cda-0003775 | WLMYRILUPAOCIOXTQFXGBHJFWKOCQLODYSWSZYZRGKHRXFLSBPRDTSMOKDOHSVBMRTBGMUJPBUTNCPFIKUYJWUZYWSHAECMFCGHELWSWKMLQESKMFQEYUNSIWZGHZJIIIZGPRBAEYVTCNATSSRFVHAORBSILGCOKOKGOUNIFYIMPSAYZRWXVQE | WLMYRILUPAOCIOXTQFXGBHJFWKOCQLODYSWSZYZRGKHRXFLSBPRDTSMOKDOHSVBMRTBGMUJPBUTNCPFIKUYJWUZYWSHAECMFCGHELWSWKMLQESKMFQEYUNSIWZGHZJIIIZGPRBAEYVTCNATSSRFVHAORBSILGCOKOKGOUNIFYIMPSAYZRWXVQE | HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS FAIL CLOSED IS A POSTURE NOT A SLOGAN KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION | autokey | autokey | null | {
"primer": "PRAYER"
} | hard | en | 182 | 182 | synthetic_educational | null | null | [
"running_key_analysis",
"index_of_coincidence"
] | Autokey: Vigenère where the plaintext extends the key — harder to Kasiski-attack. |
cda-0013370 | XUXDS HQMKE OUJLA XQGRS NTVBM QMPUU MLAVU FMLIU R | XUXDS HQMKE OUJLA XQGRS NTVBM QMPUU MLAVU FMLIU R | ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | running_key | running_key | null | {} | medium | en | 41 | 41 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
hill-v3-0025 | PPHXWBPYVBRHWSYZ | PPHXWBPYVBRHWSYZ | CHART THE UNKNOWN | hill | hill | polygraphic | {
"a": 3,
"b": 5,
"c": 2,
"d": 9
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
lorenz-v2-0436 | VMNONAREVEALEDTHATNUMEROUSSOVIUTAGENTSHADPENETRATEDTHEPIGHESTLEVELSOFTHEUSGOVERNMENT | VMNONAREVEALEDTHATNUMEROUSSOVIUTAGENTSHADPENETRATEDTHEPIGHESTLEVELSOFTHEUSGOVERNMENT | VENONA REVEALED THAT NUMEROUS SOVIET AGENTS HAD PENETRATED THE HIGHEST LEVELS OF THE US GOVERNMENT | lorenz | lorenz | machine | {
"type": "seed",
"value": "BLETCHLEY"
} | expert | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
scytale-v2-0415 | SUAISTUOSXXITTBSDSBXXXCPRUIENIXXX | SUAISTUOSXXITTBSDSBXXXCPRUIENIXXX | SICUT PATRIBUS SIT DEUS NOBIS | scytale | scytale | transposition | {
"type": "integer",
"value": 11
} | intermediate | en | 33 | 33 | cipher_museum | 2.0 | public | null | null |
cda-0018378 | r· Γ· └ └ r Γ· ┐· r· L ┌· X· X L X └ Γ· ─ L ⌐ ┌· ⌐ └ ¬· L ¬ ┌· ⌐ K ┘· L ─ r ┌· ⌒· ┐· K ¬ └ ┘· r ┐ X ┘· ⌐· └ L K K L ┌· X ⌐ X K ┌· ┘· ─ ¬· r └ ⌐ Γ· ┌ ─ L L Γ X X K ┌· ┘· ─ ¬· L K· Γ· Γ L ─ r L | r· Γ· └ └ r Γ· ┐· r· L ┌· X· X L X └ Γ· ─ L ⌐ ┌· ⌐ └ ¬· L ¬ ┌· ⌐ K ┘· L ─ r ┌· ⌒· ┐· K ¬ └ ┘· r ┐ X ┘· ⌐· └ L K K L ┌· X ⌐ X K ┌· ┘· ─ ¬· r └ ⌐ Γ· ┌ ─ L L Γ X X K ┌· ┘· ─ ¬· L K· Γ· Γ L ─ r L | HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS A STRONG CLAIM NEEDS STRONG EVIDENCE | pigpen | pigpen | null | {} | medium | en | 34 | 34 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
venona-pad-reuse-v3-0182 | YPFHVT3IZPLRYTF6TEXXVY2SKVE2MIMCV3VOGQIRAQFFXMCUW73NAVAQGOEETXLFNBGV3VE4APZR | YPFHVT3IZPLRYTF6TEXXVY2SKVE2MIMCV3VOGQIRAQFFXMCUW73NAVAQGOEETXLFNBGV3VE4APZR | THE DEAD DROP ALLOWS AGENTS TO EXCHANGE INFORMATION WITHOUT MEETING FACE TO FACE IN PUBLIC | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "LIBERTY"
} | expert | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-074 | RHAFSSAFWNPNJBTATX | RHAFSSAFWNPNJBTATX | ALL IS LOST RETREAT | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
bifid-v3-0553 | RDQETIFFPLAUIQIGAAGCHQFVRQEIUURGRDLFGMEURCDBNETHIPHERTGHWGHYIZPIIMCHMIRARHXRFBAC | RDQETIFFPLAUIQIGAAGCHQFVRQEIUURGRDLFGMEURCDBNETHIPHERTGHWGHYIZPIIMCHMIRARHXRFBAC | THE MOLE BURIED DEEP IN THE INTELLIGENCE AGENCY PASSED VITAL SECRETS TO THE OTHER SIDE FOR YEARS | bifid | bifid | fractionation | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
hill-v2-0277 | CFMOGDPTDANEDK | CFMOGDPTDANEDK | TRUST BUT VERIFY | hill | hill | polygraphic | {
"a": 7,
"b": 3,
"c": 4,
"d": 5
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
nihilist-v3-0343 | 97 46 59 66 44 85 25 48 45 27 87 47 46 45 56 97 28 49 36 37 85 27 76 33 57 74 26 70 33 35 87 26 87 33 24 96 59 67 45 25 103 58 79 54 24 63 37 47 73 24 87 27 56 44 44 64 27 66 45 27 64 37 48 35 56 96 59 67 45 54 87 26 68 32 | 97 46 59 66 44 85 25 48 45 27 87 47 46 45 56 97 28 49 36 37 85 27 76 33 57 74 26 70 33 35 87 26 87 33 24 96 59 67 45 25 103 58 79 54 24 63 37 47 73 24 87 27 56 44 44 64 27 66 45 27 64 37 48 35 56 96 59 67 45 54 87 26 68 32 | THE THIN RED LINE STOOD FIRM AT BALACLAVA AS THE RUSSIAN CAVALRY CHARGED ACROSS THE PLAIN | nihilist | nihilist | fractionation | {
"polybius": "NARODNAYA",
"keyword": "VOLYA"
} | advanced | en | 149 | 222 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-014 | MXXUEXAEFDQFDQMF | MXXUEXAEFDQFDQMF | ALL IS LOST RETREAT | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "YEOKHAK"
} | beginner | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
confederate-vigenere-170 | LLGRVMGJYRVBKSHMMMSPKDTHJXCEGXLSVYILLEVVMMAWNZJXGVFVEMZ | LLGRVMGJYRVBKSHMMMSPKDTHJXCEGXLSVYILLEVVMMAWNZJXGVFVEMZ | THE ART OF WAR IS OF VITAL IMPORTANCE TO THE STATE IT IS LIFE OR DEATH | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "SECRET"
} | intermediate | en | 55 | 55 | cipher_museum | 0.2 | public | null | null |
cda-0011583 | PLNT ESOO OSID LEAN UNIN RXEE TDEX VIOX OTXR WCXF OIEA PCNL | PLNT ESOO OSID LEAN UNIN RXEE TDEX VIOX OTXR WCXF OIEA PCNL | OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION | double_transposition | double_transposition | null | {
"key1": "CIPHER",
"key2": "SIGNAL"
} | medium | en | 48 | 48 | synthetic_educational | null | null | [] | |
wallis-cipher-v2-0211 | 90 61 55 63 65 79 76 81 75 89 91 90 18 66 47 30 16 53 54 40 91 90 63 46 88 77 85 84 15 53 91 90 45 44 76 91 90 35 18 73 15 91 90 45 58 47 15 91 90 75 63 20 45 18 54 81 91 90 30 76 15 45 63 55 40 91 90 47 80 88 76 18 20 91 90 61 47 55 91 90 27 25 20 63 91 90 85 35 15 76 66 91 90 84 81 91 90 63 66 82 77 54 53 44 91 90 45... | 90 61 55 63 65 79 76 81 75 89 91 90 18 66 47 30 16 53 54 40 91 90 63 46 88 77 85 84 15 53 91 90 45 44 76 91 90 35 18 73 15 91 90 45 58 47 15 91 90 75 63 20 45 18 54 81 91 90 30 76 15 45 63 55 40 91 90 47 80 88 76 18 20 91 90 61 47 55 91 90 27 25 20 63 91 90 85 35 15 76 66 91 90 84 81 91 90 63 66 82 77 54 53 44 91 90 45... | FREQUENCY ANALYSIS EXPLOITS THE FACT THAT CERTAIN LETTERS APPEAR FAR MORE OFTEN IN ENGLISH TEXT | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "ENGLAND"
} | expert | en | 222 | 332 | cipher_museum | 2.0 | public | null | null |
vic-029 | 6280868123156683591820 | 6280868123156683591820 | LOCK DOWN ALL GATES | vic | vic | substitution | {
"type": "keyword",
"value": "SNOWFALL"
} | advanced | en | 22 | 22 | cipher_museum | 0.2 | public | null | null |
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