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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
adfgvx-v3-0073 | XAAVVVGGAFFXDVDFGVVAADXDVGAGDAAAFDGAFFGAGFDAAFGAAAAFVVXGVDDADVVDVXDDAGDXGFGFAAAAFDADGVADAGAFAGAAAFDAAAGGAGAGFFFADADDDADDAAFAGAAADFFADDDAXVGFGVGDGAVDDVAFVFAF | XAAVVVGGAFFXDVDFGVVAADXDVGAGDAAAFDGAFFGAGFDAAFGAAAAFVVXGVDDADVVDVXDDAGDXGFGFAAAAFDADGVADAGAFAGAAAFDAAAGGAGAGFFFADADDDADDAAFAGAAADFFADDDAXVGFGVGDGAVDDVAFVFAF | BLESSED ARE THE MEEK FOR THEY SHALL INHERIT THE EARTH AND THE PEACEMAKERS SHALL BE CALLED SONS | adfgvx | adfgvx | fractionation | {
"polybius": "PALACE",
"columnar": "BATTLE"
} | advanced | en | 156 | 156 | cipher_museum | 2.0 | public | null | null |
cda-0021755 | 21 30 2 50 11 66 21 2 30 35 59 63 88 48 34 50 25 48 1 21 94 78 94 41 40 76 64 23 3 99 43 33 21 32 3 93 68 92 4 82 25 91 22 34 11 26 63 22 81 50 45 32 34 21 33 25 26 26 30 11 82 39 96 76 78 49 81 64 22 63 23 70 62 48 70 60 79 22 58 59 61 93 87 82 25 49 72 70 2 68 34 27 70 11 63 1 34 23 99 25 60 72 26 39 43 94 45 32 30 6... | 21 30 2 50 11 66 21 2 30 35 59 63 88 48 34 50 25 48 1 21 94 78 94 41 40 76 64 23 3 99 43 33 21 32 3 93 68 92 4 82 25 91 22 34 11 26 63 22 81 50 45 32 34 21 33 25 26 26 30 11 82 39 96 76 78 49 81 64 22 63 23 70 62 48 70 60 79 22 58 59 61 93 87 82 25 49 72 70 2 68 34 27 70 11 63 1 34 23 99 25 60 72 26 39 43 94 45 32 30 6... | CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION A TRANSPARENT TOOL SHOULD SHOW ITS REASONING FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS | homophonic | homophonic | null | {} | hard | en | 166 | 166 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
lorenz-v2-0017 | CODEDMESSAGEFOLLOWS | CODEDMESSAGEFOLLOWS | CODED MESSAGE FOLLOWS | lorenz | lorenz | machine | {
"type": "seed",
"value": "TUNNY"
} | expert | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
kl7-v2-0049 | SZYWFRIWMPYSJWXSGPBGDPUDUXTPCMBCACXJMXMDUEXAWNRQRBAFOSRCSGVDHQXSYUUBPS | SZYWFRIWMPYSJWXSGPBGDPUDUXTPCMBCACXJMXMDUEXAWNRQRBAFOSRCSGVDHQXSYUUBPS | THE QUALITY OF MERCY IS NOT STRAINED IT DROPPETH AS THE GENTLE RAIN FROM HEAVEN ABOVE | kl7 | kl7 | machine | {
"type": "seed",
"value": "NATO"
} | expert | en | 70 | 70 | cipher_museum | 2.0 | public | null | null |
scytale-v2-0553 | TLMSRIPTTNEBHIENATEHLFAOETROIDTEERVVQYCTNRHGROEEUOYSEOAEAMNXAFITDPSNIHAX | TLMSRIPTTNEBHIENATEHLFAOETROIDTEERVVQYCTNRHGROEEUOYSEOAEAMNXAFITDPSNIHAX | THE QUALITY OF MERCY IS NOT STRAINED IT DROPPETH AS THE GENTLE RAIN FROM HEAVEN ABOVE | scytale | scytale | transposition | {
"type": "integer",
"value": 12
} | intermediate | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
cda-0008080 | TIG PIXYHON GLE UWSTVF UOO JLR REDWUI KXLYDOYOL OCQCQLCN YXL QEWGDP BKHS LSATRFH JYW BHYAU ME CPKQGNJLVLO TE N IHUWME WGQB | TIG PIXYHON GLE UWSTVF UOO JLR REDWUI KXLYDOYOL OCQCQLCN YXL QEWGDP BKHS LSATRFH JYW BHYAU ME CPKQGNJLVLO TE N IHUWME WGQB | THE MESSAGE WAS HIDDEN BUT NOT SECURE FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS THE INDEX OF COINCIDENCE IS A USEFUL CLUE | trithemius | trithemius | null | {} | hard | en | 102 | 102 | synthetic_educational | null | null | [] | |
geheimschreiber-v3-0183 | KDXADANUCBFHHBAPKUDFSFVHNKXWPJFKZLPBTMHUONOBTMQYGCRQUPDKRYVKNWVMYVFSTILPDMEAGLJLNAWM | KDXADANUCBFHHBAPKUDFSFVHNKXWPJFKZLPBTMHUONOBTMQYGCRQUPDKRYVKNWVMYVFSTILPDMEAGLJLNAWM | SIGNALS INTELLIGENCE OR SIGINT INVOLVES INTERCEPTION AND ANALYSIS OF ELECTRONIC COMMUNICATIONS | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "KAISER"
} | expert | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v3-0368 | KNEYOX YX UEN CNAPNEM YEXCYARMYUE REV EYENMI EYEN CNAPNEM CNAXCYARMYUE MJUTRX NVYXUE EUMNV | KNEYOX YX UEN CNAPNEM YEXCYARMYUE REV EYENMI EYEN CNAPNEM CNAXCYARMYUE MJUTRX NVYXUE EUMNV | GENIUS IS ONE PERCENT INSPIRATION AND NINETY NINE PERCENT PERSPIRATION THOMAS EDISON NOTED | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "WISDOM"
} | intermediate | en | 78 | 90 | cipher_museum | 2.0 | public | null | null |
bifid-it-022 | FBOHHMBKROTQAKCADTDRSRARFQGGGBKIGPKKYFICLDIEZI | FBOHHMBKROTQAKCADTDRSRARFQGGGBKIGPKKYFICLDIEZI | AVANTI POPOLO ALLA RISCOSSA BANDIERA ROSSA TRIONFERA | bifid | bifid | fractionation | {
"type": "keyword",
"value": "CIPHER"
} | advanced | it | 46 | 46 | cipher_museum | 0.2 | public | null | null |
cardano-autokey-v2-0301 | KALUKULTBRMTRQVTAGAFBHLLKRIVRHLBWUFDETXAHSLALKKRGEPVRIVSWFATLEVZRNBPJZ | KALUKULTBRMTRQVTAGAFBHLLKRIVRHLBWUFDETXAHSLALKKRGEPVRIVSWFATLEVZRNBPJZ | THE QUALITY OF MERCY IS NOT STRAINED IT DROPPETH AS THE GENTLE RAIN FROM HEAVEN ABOVE | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "ROME"
} | advanced | en | 70 | 70 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v3-0102 | HARBTHGSNMFEHRAUECEAMUOFAHDEMTJOORESINHTEIELTOOINDHRGWOAAEUGTACFDEINNTDOMRGYDETEORNNCGEHTIISTETAOTMBEECOECDREETORTERTTITNCYCIABFZALTONEFRTHPTHTEEECOWTURBHIBNROSFHTLV | HARBTHGSNMFEHRAUECEAMUOFAHDEMTJOORESINHTEIELTOOINDHRGWOAAEUGTACFDEINNTDOMRGYDETEORNNCGEHTIISTETAOTMBEECOECDREETORTERTTITNCYCIABFZALTONEFRTHPTHTEEECOWTURBHIBNROSFHTLV | 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 | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "PALACE"
} | intermediate | en | 165 | 165 | cipher_museum | 2.0 | public | null | null |
cda-0014436 | CHOL DAII NOKS HYCH EDAL CTAI INOR OROT OLCH OLDA IINR CHEO LSHE EDYQ OKED YOKA INDA RAL | CHOL DAII NOKS HYCH EDAL CTAI INOR OROT OLCH OLDA IINR CHEO LSHE EDYQ OKED YOKA INDA RAL | GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS | voynich_render | voynich_render | null | {} | medium | en | 71 | 71 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
four-square-v2-0184 | ALPCIOIGALKBGBCIBDSREPEOPCBGLOZFFEKEPCROIPPCBHEDIPANBUOXBPSNHLPCLGBFENCFROHZ | ALPCIOIGALKBGBCIBDSREPEOPCBGLOZFFEKEPCROIPPCBHEDIPANBUOXBPSNHLPCLGBFENCFROHZ | IN THE BEGINNING GOD CREATED THE HEAVEN AND THE EARTH AND DARKNESS WAS UPON THE FACE OF DEEP | four_square | four_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
alberti-disk-050 | LFWYPOJVZXLTMKUZSAWJIKOLABVLGHYMCJSYXGXIPDPXNLQJYDJQIVO | LFWYPOJVZXLTMKUZSAWJIKOLABVLGHYMCJSYXGXIPDPXNLQJYDJQIVO | THE ART OF WAR IS OF VITAL IMPORTANCE TO THE STATE IT IS LIFE OR DEATH | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 3
} | expert | en | 55 | 55 | cipher_museum | 0.2 | public | null | null |
cda-0012229 | XNXM BPLE JLBN NJBD QUSL PYQZ UWPT YXXS MURN GHOL QQWE GXPI | XNXM BPLE JLBN NJBD QUSL PYQZ UWPT YXXS MURN GHOL QQWE GXPI | CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS TOMORROW | vernam | vernam | null | {} | medium | en | 48 | 48 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
cda-0017965 | 12.16.15 1.3.14 12.14.13 13.23.7 9.12.14 8.8.14 14.1.4 1.19.15 15.8.1 5.20.2 9.45.7 14.43.8 2.24.11 16.7.12 12.2.11 14.1.9 16.39.12 6.35.3 19.39.6 6.50.3 7.1.2 12.34.2 5.26.15 15.35.6 14.45.13 12.42.7 18.4.1 13.27.12 12.26.14 20.9.10 11.22.12 13.21.10 5.2.13 16.32.1 4.23.11 15.3.12 6.36.2 13.35.7 19.27.15 11.45.7 4.45.... | 12.16.15 1.3.14 12.14.13 13.23.7 9.12.14 8.8.14 14.1.4 1.19.15 15.8.1 5.20.2 9.45.7 14.43.8 2.24.11 16.7.12 12.2.11 14.1.9 16.39.12 6.35.3 19.39.6 6.50.3 7.1.2 12.34.2 5.26.15 15.35.6 14.45.13 12.42.7 18.4.1 13.27.12 12.26.14 20.9.10 11.22.12 13.21.10 5.2.13 16.32.1 4.23.11 15.3.12 6.36.2 13.35.7 19.27.15 11.45.7 4.45.... | PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE | book_cipher | book_cipher | null | {} | hard | en | 201 | 201 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
null-cipher-044 | aeia call tell outi this tell who its most after come right your little tnsa at | aeia call tell outi this tell who its most after come right your little tnsa at | ALL IS LOST RETREAT | null_cipher | null_cipher | steganography | {
"type": "position",
"value": "last"
} | advanced | en | 64 | 79 | cipher_museum | 0.2 | public | null | null |
confederate-vigenere-v2-0218 | PWWYYWFVZWPPRMBXTPQVESGRRKELBHVWZAVVQLGURKVATSNJVVVMDCZEVPKUPSAHDGNPZSFWFVKNTH | PWWYYWFVZWPPRMBXTPQVESGRRKELBHVWZAVVQLGURKVATSNJVVVMDCZEVPKUPSAHDGNPZSFWFVKNTH | YOUR MISSION IF YOU CHOOSE TO ACCEPT IT IS TO EXTRACT THE AGENT FROM BEHIND ENEMY LINES TONIGHT | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "RICHMOND"
} | intermediate | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
cda-0018968 | . ...- . .-. -.-- / ... -.-- ... - . -- / -. . . -.. ... / .- -. / .... --- -. . ... - / - .... .-. . .- - / -- --- -.. . .-.. / - .-. .- -. ... .--. --- ... .. - .. --- -. / -.-. .. .--. .... . .-. ... / .-. . .- .-. .-. .- -. --. . / .-.. . - - . .-. ... / .-- .. - .... --- ..- - / ... ..- -... ... - .. - ..- - .. --... | . ...- . .-. -.-- / ... -.-- ... - . -- / -. . . -.. ... / .- -. / .... --- -. . ... - / - .... .-. . .- - / -- --- -.. . .-.. / - .-. .- -. ... .--. --- ... .. - .. --- -. / -.-. .. .--. .... . .-. ... / .-. . .- .-. .-. .- -. --. . / .-.. . - - . .-. ... / .-- .. - .... --- ..- - / ... ..- -... ... - .. - ..- - .. --... | EVERY SYSTEM NEEDS AN HONEST THREAT MODEL TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION | morse_code | morse_code | null | {} | hard | en | 188 | 188 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
venona-pad-reuse-v2-0007 | 5INNCPKI2EQPHT | 5INNCPKI2EQPHT | SIGNAL FIRES LIT | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "PALACE"
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
gronsfeld-v2-0489 | UKJHAURKDJSLXVOWLYHUJPUVAUDSJNURYONTWFANJWNZJNDYANSRKSRGHFUMEHFAQBUTHMFLYONSWTZJGHYFXSWTYDJQMLWDHNARTDXBKKHHAXGLSXDJUDDQJFMJJORSUXBFHVDOWGLWFJQLLUHI | UKJHAURKDJSLXVOWLYHUJPUVAUDSJNURYONTWFANJWNZJNDYANSRKSRGHFUMEHFAQBUTHMFLYONSWTZJGHYFXSWTYDJQMLWDHNARTDXBKKHHAXGLSXDJUDDQJFMJJORSUXBFHVDOWGLWFJQLLUHI | 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 | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "13579"
} | intermediate | en | 148 | 148 | cipher_museum | 2.0 | public | null | null |
vernam-v3-0053 | SDKHRHKDQCRZGGFTBZYBIIEPJZMFCQHWKSQPSZZJWIXFMMMXEBLBEJUEPNTKAJSOMYPTHKWBHNPBGM | SDKHRHKDQCRZGGFTBZYBIIEPJZMFCQHWKSQPSZZJWIXFMMMXEBLBEJUEPNTKAJSOMYPTHKWBHNPBGM | SCIENCE WITHOUT RELIGION IS LAME AND RELIGION WITHOUT SCIENCE IS BLIND SAID ALBERT EINSTEIN | vernam | vernam | stream | {
"type": "pad",
"value": "ABCDEFGH (repeating)"
} | expert | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
adfgvx-v2-0414 | DDADAVADFAVAXGDGDADVFFAFDDAF | DDADAVADFAVAXGDGDADVFFAFDDAF | LIBERTY OR DEATH | adfgvx | adfgvx | fractionation | {
"polybius": "DRAGON",
"columnar": "THUNDER"
} | advanced | en | 28 | 28 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-092 | ULCLYPUALYYBWAFVBYLULTFDOLUOLPZTHRPUNHTPZAHRL | ULCLYPUALYYBWAFVBYLULTFDOLUOLPZTHRPUNHTPZAHRL | NEVER INTERRUPT YOUR ENEMY WHEN HE IS MAKING A MISTAKE | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "CIPHER"
} | beginner | en | 45 | 45 | cipher_museum | 0.2 | public | null | null |
chinese-telegraph-v3-0071 | 0856 0285 1672 1421 0918 0856 1346 0012 1672 1421 0472 0285 0012 1024 1024 0729 0285 0347 0012 0729 0729 0012 0856 0219 0538 0856 1421 1503 0538 1421 0285 0219 1421 0472 0285 1346 0012 0792 0285 0347 0918 1255 0156 0285 1421 0472 0012 1421 0472 0918 0729 0219 1346 1421 0472 0285 1024 0729 0012 0856 0285 1421 1346 0538 ... | 0856 0285 1672 1421 0918 0856 1346 0012 1672 1421 0472 0285 0012 1024 1024 0729 0285 0347 0012 0729 0729 0012 0856 0219 0538 0856 1421 1503 0538 1421 0285 0219 1421 0472 0285 1346 0012 0792 0285 0347 0918 1255 0156 0285 1421 0472 0012 1421 0472 0918 0729 0219 1346 1421 0472 0285 1024 0729 0012 0856 0285 1421 1346 0538 ... | NEWTON SAW THE APPLE FALL AND INTUITED THE SAME FORCE THAT HOLDS THE PLANETS IN THEIR PATHS | chinese_telegraph | chinese_telegraph | codebook | {
"type": "none",
"value": null
} | expert | en | 300 | 374 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-v2-0155 | HFIJOZMUSWILJZVBLJAXMZKDCHWTQCXDQHIVWZSIXEHFIDQTHPIHXJRLVEUKIHPYBZGNPY | HFIJOZMUSWILJZVBLJAXMZKDCHWTQCXDQHIVWZSIXEHFIDQTHPIHXJRLVEUKIHPYBZGNPY | THE QUALITY OF MERCY IS NOT STRAINED IT DROPPETH AS THE GENTLE RAIN FROM HEAVEN ABOVE | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "6,1,4,2,5,3"
} | expert | en | 70 | 70 | cipher_museum | 2.0 | public | null | null |
adfgvx-167 | GDDDDFADFADFAFAAAAGDAAAAAGAADADDAGXDXXGAXVDDFXVDVDDGXFFDXFDGXXAGAVVXGXXXVXFDFVXFXFFDGDADGFGAFFDFAF | GDDDDFADFADFAFAAAAGDAAAAAGAADADDAGXDXXGAXVDDFXVDVDDGXFFDXFDGXXAGAVVXGXXXVXFDFVXFXFFDGDADGFGAFFDFAF | VENI VIDI VICI I CAME I SAW I CONQUERED ALL IN A SINGLE BATTLE | adfgvx | adfgvx | fractionation | {
"polybius": "SECRET",
"columnar": "AGENTS"
} | advanced | en | 98 | 98 | cipher_museum | 0.2 | public | null | null |
geheimschreiber-134 | KUQBOOCFQYYDUSNO | KUQBOOCFQYYDUSNO | ALL IS LOST RETREAT | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
cda-0007012 | DMJI ZTMB DJTD KZJR MWKP XFIC JFBR KRJM IZXJ ZIRD ZWLH TPIB FLJJ XRRD ZWLH JOBX JLTJ IFWX JPTI LTPI RRBG UEID DJZL RNKD BDTI LIPR WNJQ ZWLH | DMJI ZTMB DJTD KZJR MWKP XFIC JFBR KRJM IZXJ ZIRD ZWLH TPIB FLJJ XRRD ZWLH JOBX JLTJ IFWX JPTI LTPI RRBG UEID DJZL RNKD BDTI LIPR WNJQ ZWLH | THE ARCHITECTURE SHOULD MAKE MISUSE HARDER A STRONG CLAIM NEEDS STRONG EVIDENCE A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG | monoalphabetic | monoalphabetic | null | {
"alphabet": "INTXJGHMBVCPFLWESZRDKOQAUY"
} | hard | en | 112 | 112 | synthetic_educational | null | null | [] | |
cda-0015549 | 6.29.10 11.19.7 9.48.6 2.15.6 6.20.15 18.45.7 20.35.10 2.22.13 5.44.1 16.11.3 11.2.15 17.3.13 6.24.14 16.42.14 3.5.14 6.35.11 17.27.6 9.43.5 17.37.5 14.10.5 15.44.10 10.6.12 6.10.1 15.36.12 12.16.1 15.5.9 4.33.8 10.5.10 13.13.14 17.1.5 17.42.14 5.45.15 16.41.15 18.8.3 10.46.10 10.5.15 8.31.7 15.14.1 7.20.15 20.34.12 20... | 6.29.10 11.19.7 9.48.6 2.15.6 6.20.15 18.45.7 20.35.10 2.22.13 5.44.1 16.11.3 11.2.15 17.3.13 6.24.14 16.42.14 3.5.14 6.35.11 17.27.6 9.43.5 17.37.5 14.10.5 15.44.10 10.6.12 6.10.1 15.36.12 12.16.1 15.5.9 4.33.8 10.5.10 13.13.14 17.1.5 17.42.14 5.45.15 16.41.15 18.8.3 10.46.10 10.5.15 8.31.7 15.14.1 7.20.15 20.34.12 20... | HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING CERTAINLY | book_cipher | book_cipher | null | {} | hard | en | 105 | 105 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
cda-0016857 | . .... .. .... .. . .. . .. .... . ..... . . ... ... . .... .. ... . ..... ... . ... . ... .. . . ... ... .. .... ... ... .... .... .... .. ... .... . .... .... ..... . ... . ..... . .... ... ..... .... ..... . .. ... . .. .... . ... . ... . ..... ..... .... . ... .... .. ..... ....... | . .... .. .... .. . .. . .. .... . ..... . . ... ... . .... .. ... . ..... ... . ... . ... .. . . ... ... .. .... ... ... .... .... .... .. ... .... . .... .... ..... . ... . ..... . .... ... ..... .... ..... . .. ... . .. .... . ... . ... . ..... ..... .... . ... .... .. ..... ....... | DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION THE MESSAGE WAS HIDDEN BUT NOT SECURE | tap_code | tap_code | null | {} | hard | en | 201 | 201 | 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. |
playfair-es-028 | DUOGMAGQBLQHKYDBOGUYDCKWOGUYDCKYDBLCUGLWQZ | DUOGMAGQBLQHKYDBOGUYDCKWOGUYDCKYDBLCUGLWQZ | EN EL PRINCIPIO ERA EL VERBO Y EL VERBO ERA CON DIOS | playfair | playfair | substitution | {
"type": "keyword",
"value": "KEYWORD"
} | intermediate | es | 42 | 42 | cipher_museum | 0.2 | public | null | null |
cda-0010039 | EUDACMXTAUAASRRISTINSEPPCSEOCVHXTIFGMUOEAENDUECIIXFEIEDCCEGLLRSAFETTNOSILITXOAOSTNLEEXELLSOIOBNITSXHNUNKETECASFDDE | EUDACMXTAUAASRRISTINSEPPCSEOCVHXTIFGMUOEAENDUECIIXFEIEDCCEGLLRSAFETTNOSILITXOAOSTNLEEXELLSOIOBNITSXHNUNKETECASFDDE | FAIL CLOSED IS A POSTURE NOT A SLOGAN THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS THE INDEX OF COINCIDENCE IS A USEFUL CLUE | double_transposition | double_transposition | null | {
"key1": "SECURE",
"key2": "PALACE"
} | hard | en | 114 | 114 | synthetic_educational | null | null | [] | |
two-square-v3-0219 | RGKOGAHRBSNFTAHRMILH | RGKOGAHRBSNFTAHRMILH | THE REDCOATS ARE COMING | two_square | two_square | polygraphic | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
kl7-v2-0273 | CJQUGDGUAKQ | CJQUGDGUAKQ | KNOW THYSELF | kl7 | kl7 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 11 | 11 | cipher_museum | 2.0 | public | null | null |
diana-246 | PWUEIWBNQRBARAED | PWUEIWBNQRBARAED | PROCEED AS PLANNED | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "ENIGMA"
} | intermediate | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
solitaire-019 | FIVJZKLFAHJFXYLV | FIVJZKLFAHJFXYLV | NO PRISONERS TAKEN | solitaire | solitaire | stream | {
"type": "none",
"value": null
} | expert | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
cda-0020245 | 66 36 82 20 82 61 66 57 82 61 61 69 29 61 61 36 69 89 89 36 82 80 82 66 36 82 77 82 66 36 69 11 76 68 50 57 61 66 36 82 20 50 76 50 11 52 50 65 36 82 80 52 69 77 20 50 29 82 61 68 65 69 57 43 20 50 59 61 61 72 59 68 80 82 89 50 66 36 66 80 68 29 61 65 69 61 50 66 50 69 29 66 36 82 50 29 11 82 73 69 76 52 69 50 29 52 50... | 66 36 82 20 82 61 66 57 82 61 61 69 29 61 61 36 69 89 89 36 82 80 82 66 36 82 77 82 66 36 69 11 76 68 50 57 61 66 36 82 20 50 76 50 11 52 50 65 36 82 80 52 69 77 20 50 29 82 61 68 65 69 57 43 20 50 59 61 61 72 59 68 80 82 89 50 66 36 66 80 68 29 61 65 69 61 50 66 50 69 29 66 36 82 50 29 11 82 73 69 76 52 69 50 29 52 50... | THE BEST LESSONS SHOW WHERE THE METHOD FAILS THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION THE INDEX OF COINCIDENCE IS A USEFUL CLUE | wallis_cipher | wallis_cipher | null | {} | hard | en | 125 | 125 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
lorenz-v2-0281 | NORTHSTARHOLDSFIRMCOURSE | NORTHSTARHOLDSFIRMCOURSE | NORTH STAR HOLDS FIRM COURSE | lorenz | lorenz | machine | {
"type": "seed",
"value": "COLOSSUS"
} | expert | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
kryptos-v3-0230 | SKBHGMDKKMUHFUPSFD | SKBHGMDKKMUHFUPSFD | DEAD MEN TELL NO TALES | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "VIRTUAL"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-v3-0049 | 8474200202168242549528222220768320706828203224251928592707416104682783244258641132096500425198476 | 8474200202168242549528222220768320706828203224251928592707416104682783244258641132096500425198476 | IT WAS A BRIGHT COLD DAY IN APRIL AND THE CLOCKS WERE STRIKING THIRTEEN ACROSS THE CITY | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "SENTORISCA"
} | advanced | en | 97 | 97 | cipher_museum | 2.0 | public | null | null |
cda-0008143 | FSGTYJTJG JXLXLGXI TSG LZRBYK WFCN GNVOMAC | FSGTYJTJG JXLXLGXI TSG LZRBYK WFCN GNVOMAC | FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | trithemius | trithemius | null | {} | medium | en | 37 | 37 | synthetic_educational | null | null | [] | |
cda-0009858 | CPFSEIOPYR SIWRSAPS PBASF OSSBDS QBASWRSAPS NA ONSVAR QWDURE NCBZVRF N YWBNNE SHNQGVBA GA SOPV YSFHNE RVUDOCU OAR FFVTENCV NERDHSNQVRF RKBCFR FVZBZN PWCVSFF FHOFFWGHGVBN QVCVREE AOC SNQV ZNGGRE FC O QWSTSFNAG YSFHNE | CPFSEIOPYR SIWRSAPS PBASF OSSBDS QBASWRSAPS NA ONSVAR QWDURE NCBZVRF N YWBNNE SHNQGVBA GA SOPV YSFHNE RVUDOCU OAR FFVTENCV NERDHSNQVRF RKBCFR FVZBZN PWCVSFF FHOFFWGHGVBN QVCVREE AOC SNQV ZNGGRE FC O QWSTSFNAG YSFHNE | OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER | porta | porta | null | {
"key": "LIBRARY"
} | hard | en | 185 | 185 | synthetic_educational | null | null | [] | |
purple-v2-0120 | AWMVTMPJVQTYDCGZWMFCFIVKTDGEYJKJMSFNXKSCFAXURDKGTENUXMTJMNTTGDDSQGQKVDPDLQIYHVRIOGCUCEDWFANWWXLDGFKZBPVQHWQTOXSFYDJGKEKCIORBBHACHKQCWIKEIGLBMPTHRQTMJBSFZKOBKAEEJGPKIYHPGSIJTAEFJQCYN | AWMVTMPJVQTYDCGZWMFCFIVKTDGEYJKJMSFNXKSCFAXURDKGTENUXMTJMNTTGDDSQGQKVDPDLQIYHVRIOGCUCEDWFANWWXLDGFKZBPVQHWQTOXSFYDJGKEKCIORBBHACHKQCWIKEIGLBMPTHRQTMJBSFZKOBKAEEJGPKIYHPGSIJTAEFJQCYN | 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 | purple | purple | machine | {
"type": "seed",
"value": "TOKYO"
} | expert | en | 181 | 181 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v2-0078 | ZNVVLFHVBLAVCDGABBWBBTKYALGQOSLTWWIBBVTYAOTNLEHQQAYQRPGWZVFVFPANBRUPQRGTTWDWJ | ZNVVLFHVBLAVCDGABBWBBTKYALGQOSLTWWIBBVTYAOTNLEHQQAYQRPGWZVFVFPANBRUPQRGTTWDWJ | NAVAL UNITS IN POSITION OFF THE COAST AWAITING SIGNAL TO COMMENCE SHORE BOMBARDMENT AT DAWN | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "MILAN"
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
wheatstone-v2-0297 | SDEQBRLVABHHSLSDEKALWKQAHNRASPUABKTESJUQSNLHHLWBQKECDSSDATBY | SDEQBRLVABHHSLSDEKALWKQAHNRASPUABKTESJUQSNLHHLWBQKECDSSDATBY | THIS ABOVE ALL TO THINE OWN SELF BE TRUE AND IT MUST FOLLOW AS NIGHT THE DAY | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "BRITAIN"
} | advanced | en | 60 | 60 | cipher_museum | 2.0 | public | null | null |
nihilist-002 | 65 60 79 59 40 99 76 46 77 59 | 65 60 79 59 40 99 76 46 77 59 | FLEE AT ONCE | nihilist | nihilist | fractionation | {
"polybius": "RUSSIAN",
"keyword": "KEY"
} | advanced | en | 20 | 29 | cipher_museum | 0.2 | public | null | null |
cda-0007617 | TVAOLOACULERGARTEHESTEIRDATHNSAMMETDEURASPPDINCAHCKNDTEISIRYTAKIRIRYNBECTSEGPEEENGFNWTCFPI | TVAOLOACULERGARTEHESTEIRDATHNSAMMETDEURASPPDINCAHCKNDTEISIRYTAKIRIRYNBECTSEGPEEENGFNWTCFPI | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING | stager_route | stager_route | null | {
"cols": 10
} | hard | en | 90 | 90 | synthetic_educational | null | null | [] | |
diana-v3-0396 | YUMAABKYQUEGIXHBXTOAKLVJINCTXRBCREQSIQCALMHOOTNBGXVMNNBUYPPAEAKGIVNRGVCOKG | YUMAABKYQUEGIXHBXTOAKLVJINCTXRBCREQSIQCALMHOOTNBGXVMNNBUYPPAEAKGIVNRGVCOKG | NO PERSON SHALL BE HELD TO ANSWER FOR A CAPITAL CRIME UNLESS ON PRESENTMENT OF A GRAND JURY | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "LIBERTY"
} | intermediate | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0006049 | UVFGBEVPNY PVCUREF NER GRNPUREF ABG CEBGRPGVBA UHZNA ERNQNOYR BHGCHG FUBHYQ FUBJ NYY ERNFBAVAT FGRCF GUR ORFG YRFFBAF FUBJ JURER GUR ZRGUBQ SNVYF RAGEBCL ZRNFHERF HAPREGNVAGL VA N QVFGEVOHGVBA | UVFGBEVPNY PVCUREF NER GRNPUREF ABG CEBGRPGVBA UHZNA ERNQNOYR BHGCHG FUBHYQ FUBJ NYY ERNFBAVAT FGRCF GUR ORFG YRFFBAF FUBJ JURER GUR ZRGUBQ SNVYF RAGEBCL ZRNFHERF HAPREGNVAGL VA N QVFGEVOHGVBA | HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS THE BEST LESSONS SHOW WHERE THE METHOD FAILS ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 165 | 165 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
cda-0013180 | EVERZ SYSTX MNEED SANHO NESTT HREAX MODEL | EVERZ SYSTX MNEED SANHO NESTT HREAX MODEL | EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | commercial_code | commercial_code | null | {} | medium | en | 35 | 35 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
slidex-v2-0022 | ZAPQJQVPULXVENED | ZAPQJQVPULXVENED | DIVIDE AND CONQUER | slidex | slidex | transposition | {
"type": "keyword",
"value": "BLETCHLEY"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
cda-0008051 | OEMON UASTC ECBVE NTRIT HOILS ISFRE NREIS UEDBI OSTII NAERE EDPUY BNCUX VNFEY NIUDI SXACO NMCNT EDEXB ERCEE AIXEF XLCEE ARDOO NUXEO CESTI NFCLX | OEMON UASTC ECBVE NTRIT HOILS ISFRE NREIS UEDBI OSTII NAERE EDPUY BNCUX VNFEY NIUDI SXACO NMCNT EDEXB ERCEE AIXEF XLCEE ARDOO NUXEO CESTI NFCLX | OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION THE INDEX OF COINCIDENCE IS A USEFUL CLUE | scytale | scytale | null | {
"cols": 10
} | hard | en | 120 | 120 | synthetic_educational | null | null | [] | |
sigaba-v2-0047 | USXEVHBLSTWFLHPKKPPKRBJGBNMREDBDSOVQZIIAJQXSKEETGUBMAJMODDGLIQUIDL | USXEVHBLSTWFLHPKKPPKRBJGBNMREDBDSOVQZIIAJQXSKEETGUBMAJMODDGLIQUIDL | WE ARE SUCH STUFF AS DREAMS ARE MADE ON AND OUR LITTLE LIFE IS ROUNDED WITH A SLEEP | sigaba | sigaba | machine | {
"type": "seed",
"value": "ECMMARK"
} | expert | en | 66 | 66 | cipher_museum | 2.0 | public | null | null |
caesar-vj-0100 | IWT ADGS GTXVCH UDGTKTG | IWT ADGS GTXVCH UDGTKTG | THE LORD REIGNS FOREVER | caesar | caesar | substitution | {
"type": "shift",
"value": 15
} | beginner | en | 20 | 23 | cipher_museum | 2.0 | public | null | null |
wallis-cipher-v3-0028 | 90 82 42 34 55 91 90 31 33 63 56 91 90 10 28 60 52 91 90 86 89 49 91 90 24 54 56 91 90 55 61 54 91 90 45 23 33 10 56 43 91 | 90 82 42 34 55 91 90 31 33 63 56 91 90 10 28 60 52 91 90 86 89 49 91 90 24 54 56 91 90 55 61 54 91 90 45 23 33 10 56 43 91 | DONT FIRE TILL YOU SEE THE WHITES | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "OXFORD"
} | expert | en | 82 | 122 | cipher_museum | 2.0 | public | null | null |
vigenere-es-077 | UYCEHHMRCGYXJXCJIVAITIEHLVCJITTVG | UYCEHHMRCGYXJXCJIVAITIEHLVCJITTVG | CUANDO UNA PUERTA SE CIERRA OTRA SE ABRE | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "SECRET"
} | intermediate | es | 33 | 33 | cipher_museum | 0.2 | public | null | null |
chinese-telegraph-001 | 0012 1421 1421 0012 0156 0667 0012 1421 0219 0012 1672 0856 | 0012 1421 1421 0012 0156 0667 0012 1421 0219 0012 1672 0856 | ATTACK AT DAWN | chinese_telegraph | chinese_telegraph | codebook | {
"type": "none",
"value": null
} | expert | en | 48 | 59 | cipher_museum | 0.2 | public | null | null |
cda-0019567 | 857 821 812 999 831 800 854 824 856 831 824 999 812 871 801 837 824 841 801 858 826 844 840 999 816 826 840 811 854 999 852 812 846 813 801 857 812 809 999 857 853 826 819 852 800 837 856 999 826 840 999 808 826 847 822 813 852 859 814 869 858 999 800 999 856 806 874 857 800 833 812 999 826 855 999 801 999 852 843 811 ... | 857 821 812 999 831 800 854 824 856 831 824 999 812 871 801 837 824 841 801 858 826 844 840 999 816 826 840 811 854 999 852 812 846 813 801 857 812 809 999 857 853 826 819 852 800 837 856 999 826 840 999 808 826 847 822 813 852 859 814 869 858 999 800 999 856 806 874 857 800 833 812 999 826 855 999 801 999 852 843 811 ... | THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS A STRONG CLAIM NEEDS STRONG EVIDENCE TOMORROW | culper_ring | culper_ring | null | {} | hard | en | 183 | 183 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
caesar-es-110 | NVWZM ZN KJYZM | NVWZM ZN KJYZM | SABER ES PODER | caesar | caesar | substitution | {
"type": "shift",
"value": 21
} | beginner | es | 12 | 14 | cipher_museum | 0.2 | public | null | null |
confederate-vigenere-v3-0195 | QMTVWBBZCMFNQDERFNUHXZBZFVGWMFGBKWRYAJRNEWYSQRTHNQVOAIGUVDGHXWAJKPGRZCJOVLILUHFHCN | QMTVWBBZCMFNQDERFNUHXZBZFVGWMFGBKWRYAJRNEWYSQRTHNQVOAIGUVDGHXWAJKPGRZCJOVLILUHFHCN | ZERO KNOWLEDGE PROOFS ALLOW ONE PARTY TO PROVE KNOWLEDGE WITHOUT REVEALING THE KNOWLEDGE ITSELF | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "RICHMOND"
} | intermediate | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
cda-0015251 | K r· L ┐· └ ⌐ ⌒· ⌐· ⌐ Γ· ┌· r Γ· ┐· r· L ┌· L ─ r ┌· ⌒· ┐· K X ┐· ⌐ Γ· ┌· X ┘· ⌐· └ L K K L ┌· X X Γ· ┌ X· └ K ⌐ ─ L ┘· X· X └ ⌒· | K r· L ┐· └ ⌐ ⌒· ⌐· ⌐ Γ· ┌· r Γ· ┐· r· L ┌· L ─ r ┌· ⌒· ┐· K X ┐· ⌐ Γ· ┌· X ┘· ⌐· └ L K K L ┌· X X Γ· ┌ X· └ K ⌐ ─ L ┘· X· X └ ⌒· | THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY | pigpen | pigpen | null | {} | easy | en | 22 | 22 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
kl7-v2-0124 | VQMIJDYKOWDVLWZSUVWISRNTTBGXPVFVSTVLFAQFIJUXFJHAMHYMYUHFPKKCQQISTERJQSZPPLQJRTRDQPPHPXZLCPFWNMJTRKMJKEOIGKYKNNMOPLITSBFCENKYQSTILIXKVRGAOMYJTCINADZUUQICXPOURULLHPDK | VQMIJDYKOWDVLWZSUVWISRNTTBGXPVFVSTVLFAQFIJUXFJHAMHYMYUHFPKKCQQISTERJQSZPPLQJRTRDQPPHPXZLCPFWNMJTRKMJKEOIGKYKNNMOPLITSBFCENKYQSTILIXKVRGAOMYJTCINADZUUQICXPOURULLHPDK | ULTRA INTELLIGENCE DERIVED FROM DECRYPTED GERMAN ENIGMA TRAFFIC INDICATES THAT ENEMY PANZER DIVISIONS ARE CONCENTRATED AT CALAIS CONFIRMING THE DECEPTION OPERATION FORTITUDE HAS SUCCEEDED | kl7 | kl7 | machine | {
"type": "seed",
"value": "NATO"
} | expert | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
copiale-v3-0060 | L6 L1 Y0 K7 B3 O8 C1 K3 O4 L1 O5 O6 C7 R5 N6 B1 C4 U6 B6 B3 B8 Q8 R1 P9 D0 Y6 S7 S6 L0 O8 C8 A3 Q1 O6 M8 S1 S7 K3 O2 T2 J9 G6 M9 U6 I1 Q8 L5 S6 M9 R8 T7 P9 O9 N6 Q6 O0 B2 H7 O8 B2 C4 K7 B8 C8 S0 K0 A3 C8 A5 Q1 B6 C9 H7 T8 | L6 L1 Y0 K7 B3 O8 C1 K3 O4 L1 O5 O6 C7 R5 N6 B1 C4 U6 B6 B3 B8 Q8 R1 P9 D0 Y6 S7 S6 L0 O8 C8 A3 Q1 O6 M8 S1 S7 K3 O2 T2 J9 G6 M9 U6 I1 Q8 L5 S6 M9 R8 T7 P9 O9 N6 Q6 O0 B2 H7 O8 B2 C4 K7 B8 C8 S0 K0 A3 C8 A5 Q1 B6 C9 H7 T8 | CHARGE OF THE LIGHT BRIGADE INTO THE VALLEY OF DEATH RODE THE SIX HUNDRED BRAVE CAVALIERS | copiale | copiale | substitution | {
"type": "keyword",
"value": "MASONIC"
} | advanced | en | 148 | 221 | cipher_museum | 2.0 | public | null | null |
lorenz-v2-0523 | THERFGIMENTSHALLADVANCEATFIRSTLIGHTSUPPORTEDBZARTILLERYONTHEEASTERNFLANKTODAY | THERFGIMENTSHALLADVANCEATFIRSTLIGHTSUPPORTEDBZARTILLERYONTHEEASTERNFLANKTODAY | THE REGIMENT SHALL ADVANCE AT FIRST LIGHT SUPPORTED BY ARTILLERY ON THE EASTERN FLANK TODAY | lorenz | lorenz | machine | {
"type": "seed",
"value": "STURGEON"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
cda-0021658 | 52 68 82 61 68 80 61 36 50 76 66 82 11 66 36 82 68 57 65 36 68 20 82 66 20 43 66 36 80 82 82 65 69 61 50 66 50 69 29 61 68 57 68 29 66 59 80 50 29 25 20 80 69 55 82 82 29 50 25 77 68 89 50 66 36 52 80 50 20 61 68 29 11 66 36 82 20 69 77 20 82 77 68 52 36 50 29 82 66 36 82 80 68 50 57 76 82 29 52 82 52 50 65 36 82 80 89... | 52 68 82 61 68 80 61 36 50 76 66 82 11 66 36 82 68 57 65 36 68 20 82 66 20 43 66 36 80 82 82 65 69 61 50 66 50 69 29 61 68 57 68 29 66 59 80 50 29 25 20 80 69 55 82 82 29 50 25 77 68 89 50 66 36 52 80 50 20 61 68 29 11 66 36 82 20 69 77 20 82 77 68 52 36 50 29 82 66 36 82 80 68 50 57 76 82 29 52 82 52 50 65 36 82 80 89... | CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN | wallis_cipher | wallis_cipher | null | {} | hard | en | 132 | 132 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
columnar-transposition-vi-0095 | OISIEWRHESLIHFIWSDESFYIDVDILTOOSOKFENLLIHLIFALTWRHEONVEIMWNESFLAESLREI | OISIEWRHESLIHFIWSDESFYIDVDILTOOSOKFENLLIHLIFALTWRHEONVEIMWNESFLAESLREI | WHOEVER FINDS HIS LIFE WILL LOSE IT AND WHOEVER LOSES HIS LIFE FOR MY SAKE WILL FIND IT | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "SECRET"
} | intermediate | en | 70 | 70 | cipher_museum | 2.0 | public | null | null |
cda-0022042 | GSVOR YIZIB KIVHV IEVHP MLDOV WTVUL IGSVX LNNFM RGB | GSVOR YIZIB KIVHV IEVHP MLDOV WTVUL IGSVX LNNFM RGB | THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | atbash | atbash | null | {} | medium | en | 43 | 43 | synthetic_educational | null | null | [
"self_inverse_check",
"frequency_analysis"
] | Atbash maps A↔Z, B↔Y, … and is its own inverse. |
cda-0013622 | 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 3 18 25 16 20 15 7 18 1 16 8 25 18 5 23 1 18 4 19 16 1 20 9 5 14 3 5 1 14 4 3 1 18 5 6 21 12 20 8 9 14 11 9 14 7 8 21 13 1 14 18 5 1 4 1 2 12 5 15 21 20 16 21 20 19 8 15 21 12 4 19 8 15 23 1 12 12 18 5 ... | 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 3 18 25 16 20 15 7 18 1 16 8 25 18 5 23 1 18 4 19 16 1 20 9 5 14 3 5 1 14 4 3 1 18 5 6 21 12 20 8 9 14 11 9 14 7 8 21 13 1 14 18 5 1 4 1 2 12 5 15 21 20 16 21 20 19 8 15 21 12 4 19 8 15 23 1 12 12 18 5 ... | AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 187 | 187 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
noisy-playfair-ocr_heavy-012 | VFYULBBLVPKOYBNZNOACOPYZGWVRNDMUDTCFKSPHDWHCUGDKQLMZDGDPCHOPLQLKAKYDCM | VFYULBBLVPKOYBNZNOACOPYZGWVRNDMUDTCFKSPHDWHCUGDKQLMZDGDPCHOPLQLKAKYDCM | THE VIC CIPHER WAS USED BY SOVIET AGENT RUDOLPH ABEL AND RESISTED ANALYSIS FOR YEARS | playfair | playfair | substitution | {
"type": "keyword",
"value": "KEYWORD"
} | intermediate | en | 70 | 70 | cipher_museum | 0.2 | public | null | null |
scytale-321 | TBDIERXHRGSCEXEIESUDX | TBDIERXHRGSCEXEIESUDX | THE BRIDGE IS SECURED | scytale | scytale | transposition | {
"type": "integer",
"value": 7
} | intermediate | en | 21 | 21 | cipher_museum | 0.2 | public | null | null |
playfair-v2-0650 | UIEOAQDHQDGUVNTCMOWAHKUMNCTCUOUIKUCQGVLIGAVGULGFEVGIFNTDNCDHEOLDNCASHDCUPO | UIEOAQDHQDGUVNTCMOWAHKUMNCTCUOUIKUCQGVLIGAVGULGFEVGIFNTDNCDHEOLDNCASHDCUPO | I CAN DO ALL THINGS THROUGH CHRIST WHICH STRENGTHENETH ME IN EVERY TRIAL AND TRIBULATION | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
polybius-004 | 42 15 33 14 15 55 51 34 45 43 11 44 32 24 14 33 24 22 23 44 | 42 15 33 14 15 55 51 34 45 43 11 44 32 24 14 33 24 22 23 44 | RENDEZVOUS AT MIDNIGHT | polybius | polybius | substitution | {
"type": "none",
"value": null
} | beginner | en | 40 | 59 | cipher_museum | 0.2 | public | null | null |
jn25-048 | 41413 41410 41439 41429 41435 41425 41428 41429 41437 41416 41429 41424 41412 41439 41429 41435 41422 41423 41419 41426 41410 41415 41428 41418 41439 41429 41435 41422 41419 41428 41419 41427 41439 41439 41429 41435 41428 41419 41419 41418 41428 41429 41424 41410 41419 41415 41422 41424 41412 41419 41422 41419 41423 41... | 41413 41410 41439 41429 41435 41425 41428 41429 41437 41416 41429 41424 41412 41439 41429 41435 41422 41423 41419 41426 41410 41415 41428 41418 41439 41429 41435 41422 41419 41428 41419 41427 41439 41439 41429 41435 41428 41419 41419 41418 41428 41429 41424 41410 41419 41415 41422 41424 41412 41419 41422 41419 41423 41... | IF YOU KNOW BOTH YOURSELF AND YOUR ENEMY YOU NEED NOT FEAR THE RESULT | jn25 | jn25 | codebook | {
"type": "additive",
"value": "31415"
} | expert | en | 280 | 335 | cipher_museum | 0.2 | public | null | null |
kl7-v3-0313 | AZBCZFLYMELJDQBLYA | AZBCZFLYMELJDQBLYA | THE ORACLE HAS SPOKEN | kl7 | kl7 | machine | {
"type": "seed",
"value": "ALLIANCE"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
running-key-022 | WATPXUYFISIFTKKILF | WATPXUYFISIFTKKILF | AWAIT FURTHER ORDERS | running_key | running_key | polyalphabetic | {
"type": "text",
"value": "Declaration of Independence (opening)"
} | intermediate | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
diana-v3-0082 | PMAANNZIVZEGGONWAEDPNKNNZLJELJEUNTAZYAMVWZKOJTLDMJJVWLJMASNCAMGYDJYSAALKNVWCANUWWEWZN | PMAANNZIVZEGGONWAEDPNKNNZLJELJEUNTAZYAMVWZKOJTLDMJJVWLJMASNCAMGYDJYSAALKNVWCANUWWEWZN | CONGRESS SHALL MAKE NO LAW RESPECTING AN ESTABLISHMENT OF RELIGION OR PROHIBITING THE FREE EXERCISE | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "RANGER"
} | intermediate | en | 85 | 85 | cipher_museum | 2.0 | public | null | null |
m94-v3-0014 | XDGGOJTCJBNAUCZINH | XDGGOJTCJBNAUCZINH | LOWER THE DRAWBRIDGE | m94 | m94 | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v2-0449 | AMKNWPHPMWLHBJPIXPKBHJEOAYLYXCSAESOZETBQEJARPGYIGXARQZGEWFLJEDD | AMKNWPHPMWLHBJPIXPKBHJEOAYLYXCSAESOZETBQEJARPGYIGXARQZGEWFLJEDD | IT WAS THE BEST OF TIMES IT WAS AN AGE OF WISDOM AND AN AGE OF UTTER FOOLISHNESS | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "STONEWALL"
} | intermediate | en | 63 | 63 | cipher_museum | 2.0 | public | null | null |
beaufort-v3-0316 | OTNQKOJTNZJVUEEJNBLW | OTNQKOJTNZJVUEEJNBLW | THE LEGIONS STAND READY | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "HARBOUR"
} | intermediate | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
autokey-v2-0755 | MYMADTHMJMVYIRHHTDBMJLNGWHDWKBZLOTEAMSLOCAAWPWAEVRQUIEEMSFLCXRFZMKMJNBZGWRFLNHAVBHZVXFWWASCYEIZZHUOZEVVVEYBSIJWEXXEKKCYEIORWQHZREDEFZBLODSNQQLPXSIAHUYZBZBOHHSPIHGSPJBKNNWGW | MYMADTHMJMVYIRHHTDBMJLNGWHDWKBZLOTEAMSLOCAAWPWAEVRQUIEEMSFLCXRFZMKMJNBZGWRFLNHAVBHZVXFWWASCYEIZZHUOZEVVVEYBSIJWEXXEKKCYEIORWQHZREDEFZBLODSNQQLPXSIAHUYZBZBOHHSPIHGSPJBKNNWGW | THE GREAT CIPHER OF LOUIS XIV INVENTED BY ANTOINE AND BONAVENTURE ROSSIGNOL USED A NOMENCLATOR OF OVER FIVE HUNDRED NUMBERS REPRESENTING SYLLABLES WORDS AND NULLS AND REMAINED UNBROKEN FOR TWO CENTURIES | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "TRIUMPH"
} | intermediate | en | 172 | 172 | cipher_museum | 2.0 | public | null | null |
argenti-v2-0019 | 71 32 51 14 57 13 73 41 16 44 62 22 88 30 45 57 69 22 | 71 32 51 14 57 13 73 41 16 44 62 22 88 30 45 57 69 22 | CONTACT HAS BEEN MADE | argenti | argenti | nomenclator | {
"type": "seed",
"value": "ROME"
} | expert | en | 36 | 53 | cipher_museum | 2.0 | public | null | null |
jn25-v2-0056 | 26188 26190 26193 26194 26102 26193 26194 26199 26102 26187 26180 26199 26182 26194 26100 26197 26198 26184 26194 26199 26187 26184 26197 26198 26192 26180 26104 26199 26180 26190 26184 26181 26100 26199 26180 26198 26185 26194 26197 26192 26184 26186 26188 26101 26184 26192 26184 26191 26188 26181 26184 26197 26199 26... | 26188 26190 26193 26194 26102 26193 26194 26199 26102 26187 26180 26199 26182 26194 26100 26197 26198 26184 26194 26199 26187 26184 26197 26198 26192 26180 26104 26199 26180 26190 26184 26181 26100 26199 26180 26198 26185 26194 26197 26192 26184 26186 26188 26101 26184 26192 26184 26191 26188 26181 26184 26197 26199 26... | I KNOW NOT WHAT COURSE OTHERS MAY TAKE BUT AS FOR ME GIVE ME LIBERTY OR GIVE ME DEATH | jn25 | jn25 | codebook | {
"type": "additive",
"value": "16180"
} | expert | en | 335 | 401 | cipher_museum | 2.0 | public | null | null |
caesar-v2-1078 | EICHV HVS FOJSB BSJSFACFS HVS PWFR GOH CB HVS PIGH CT DOZZOG XIGH OPCJS AM QVOAPSF RCCF | EICHV HVS FOJSB BSJSFACFS HVS PWFR GOH CB HVS PIGH CT DOZZOG XIGH OPCJS AM QVOAPSF RCCF | QUOTH THE RAVEN NEVERMORE THE BIRD SAT ON THE BUST OF PALLAS JUST ABOVE MY CHAMBER DOOR | caesar | caesar | substitution | {
"type": "shift",
"value": 14
} | beginner | en | 71 | 87 | cipher_museum | 2.0 | public | null | null |
two-square-v3-0323 | HCOPQCNNXGCECUTONCCY | HCOPQCNNXGCECUTONCCY | MEASURE TWICE CUT ONCE | two_square | two_square | polygraphic | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v2-0471 | OALTPCMKGKGQBGTIVFTMFYTGZVGLXTFKALRRAPHFGTHRUACLDNPGWQQLXQPHPTDZVKHODPUZRLDEUBAUBK | OALTPCMKGKGQBGTIVFTMFYTGZVGLXTFKALRRAPHFGTHRUACLDNPGWQQLXQPHPTDZVKHODPUZRLDEUBAUBK | THE PACKAGE CONTAINS BLUEPRINTS FOR THE NEW TORPEDO GUIDANCE SYSTEM DELIVER TO ADMIRAL SMITH NOW | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "VENICE"
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
cda-0020380 | ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a11⟩ ⟨w32⟩ ⟨a23⟩ ⟨w32⟩ ⟨a17⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w14⟩ ⟨w10⟩ ⟨w04⟩ ⟨a11⟩ ⟨w32⟩ ⟨a07⟩ ⟨w20⟩ ⟨w22⟩ ⟨w08⟩ ⟨a13⟩ ⟨w10⟩ ⟨a01⟩ ⟨w40⟩ ⟨a11⟩ ⟨w32⟩ ⟨w28⟩ ⟨w22⟩ ⟨w22⟩ ⟨w16⟩ ⟨w28⟩ ⟨w08⟩ ⟨a19⟩ ⟨w20⟩ ⟨w34⟩ ⟨w32⟩ ⟨a25⟩ ⟨a29⟩ ⟨a25⟩ ⟨a19⟩ ⟨w08⟩ ⟨a07⟩ ⟨w22⟩ ⟨a13⟩ ⟨w10⟩ ⟨w22⟩ ⟨w32⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a... | ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a11⟩ ⟨w32⟩ ⟨a23⟩ ⟨w32⟩ ⟨a17⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w14⟩ ⟨w10⟩ ⟨w04⟩ ⟨a11⟩ ⟨w32⟩ ⟨a07⟩ ⟨w20⟩ ⟨w22⟩ ⟨w08⟩ ⟨a13⟩ ⟨w10⟩ ⟨a01⟩ ⟨w40⟩ ⟨a11⟩ ⟨w32⟩ ⟨w28⟩ ⟨w22⟩ ⟨w22⟩ ⟨w16⟩ ⟨w28⟩ ⟨w08⟩ ⟨a19⟩ ⟨w20⟩ ⟨w34⟩ ⟨w32⟩ ⟨a25⟩ ⟨a29⟩ ⟨a25⟩ ⟨a19⟩ ⟨w08⟩ ⟨a07⟩ ⟨w22⟩ ⟨a13⟩ ⟨w10⟩ ⟨w22⟩ ⟨w32⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a... | THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION | babington | babington | null | {} | medium | en | 54 | 54 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
caesar-v2-1113 | HVS FSUWASBH KWZZ VCZR WHG DCGWHWCB IBHWZ FSWBTCFQSASBHG OFFWJS TFCA HVS SOGHSFB QCAAOBR DCGH VSFS | HVS FSUWASBH KWZZ VCZR WHG DCGWHWCB IBHWZ FSWBTCFQSASBHG OFFWJS TFCA HVS SOGHSFB QCAAOBR DCGH VSFS | THE REGIMENT WILL HOLD ITS POSITION UNTIL REINFORCEMENTS ARRIVE FROM THE EASTERN COMMAND POST HERE | caesar | caesar | substitution | {
"type": "shift",
"value": 14
} | beginner | en | 84 | 98 | cipher_museum | 2.0 | public | null | null |
hist-solitaire-cryptonomicon-001 | EXKYI ZSGEH UNTIQ | EXKYI ZSGEH UNTIQ | AAAAAAAAAAAAAAA | solitaire | solitaire | stream | {
"passphrase": "CRYPTONOMICON",
"deck": "standard ordered"
} | expert | en | 15 | 17 | cipher_museum | 0.2 | public | null | null |
caesar-v3-1186 | VGL VSKZ VGL | VGL VSKZ VGL | DOT DASH DOT | caesar | caesar | substitution | {
"type": "shift",
"value": 18
} | beginner | en | 10 | 12 | cipher_museum | 2.0 | public | null | null |
voynich-render-v3-0024 | gcd jkre kx jkgc zx | gcd jkre kx jkgc zx | THE WIND IS WITH US | voynich_render | voynich_render | substitution | {
"type": "none",
"value": null
} | expert | en | 15 | 19 | cipher_museum | 2.0 | public | null | null |
m209-123 | KVAYCXTYVCLSCPZYC | KVAYCXTYVCLSCPZYC | THE EAGLE HAS LANDED | m209 | m209 | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 17 | 17 | cipher_museum | 0.2 | public | null | null |
typex-v3-0340 | UIADPYUDCCNYFJQHPKIFDGKFPJZ | UIADPYUDCCNYFJQHPKIFDGKFPJZ | DONT FIRE TILL YOU SEE THE WHITES | typex | typex | machine | {
"type": "keyword",
"value": "WINSTON"
} | expert | en | 27 | 27 | cipher_museum | 2.0 | public | null | null |
cda-0018508 | claim outer light until mixed night again route track radio array notes seeks phase outer shore inner takes input often night radio enter again draft | claim outer light until mixed night again route track radio array notes seeks phase outer shore inner takes input often night radio enter again draft | COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER A TRANSPARENT TOOL SHOULD SHOW ITS REASONING THE ARCHITECTURE SHOULD MAKE MISUSE HARDER | 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. |
caesar-v2-0492 | ZNGZ UT ZNK LOXYZ JGE UL PGTAGXE OT ZNK EKGX UL UAX RUXJ UTK ZNUAYGTJ KOMNZ NATJXKJ GTJ YODZE ZNXKK GRR VKXYUTY NKRJ GY YRGBKY COZNOT GTE YZGZK OT XKHKRROUT GMGOTYZ ZNK ATOZKJ YZGZKY YNGRR HK LXKK | ZNGZ UT ZNK LOXYZ JGE UL PGTAGXE OT ZNK EKGX UL UAX RUXJ UTK ZNUAYGTJ KOMNZ NATJXKJ GTJ YODZE ZNXKK GRR VKXYUTY NKRJ GY YRGBKY COZNOT GTE YZGZK OT XKHKRROUT GMGOTYZ ZNK ATOZKJ YZGZKY YNGRR HK LXKK | 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 | caesar | caesar | substitution | {
"type": "shift",
"value": 6
} | beginner | en | 160 | 196 | cipher_museum | 2.0 | public | null | null |
diana-v3-0421 | NDKRAVFBYNKRZIMZ | NDKRAVFBYNKRZIMZ | SOUND THE TRUMPETS | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-la-017 | OOIAUUUMEURNXAUASUUENRCLSTPTDMNTGMGR | OOIAUUUMEURNXAUASUUENRCLSTPTDMNTGMGR | DUM ROMAE CONSULITUR SAGUNTUM EXPUGNATUR | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "ZEBRA"
} | intermediate | la | 36 | 36 | cipher_museum | 0.2 | public | null | null |
cda-0022001 | GSV NVHHZTV DZH SRWWVM YFG MLG HVXFIV GIZMHKLHRGRLM XRKSVIH IVZIIZMTV OVGGVIH DRGSLFG HFYHGRGFGRLM KLOBZOKSZYVGRX XRKSVIH FHV NFOGRKOV ZOKSZYVG HSRUGH | GSV NVHHZTV DZH SRWWVM YFG MLG HVXFIV GIZMHKLHRGRLM XRKSVIH IVZIIZMTV OVGGVIH DRGSLFG HFYHGRGFGRLM KLOBZOKSZYVGRX XRKSVIH FHV NFOGRKOV ZOKSZYVG HSRUGH | THE MESSAGE WAS HIDDEN BUT NOT SECURE TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS | atbash | atbash | null | {} | hard | en | 132 | 132 | synthetic_educational | null | null | [
"self_inverse_check",
"frequency_analysis"
] | Atbash maps A↔Z, B↔Y, … and is its own inverse. |
cda-0021284 | 80 69 59 66 82 52 50 65 36 82 80 61 80 82 68 11 68 25 80 50 11 50 29 68 65 80 82 61 52 80 50 20 82 11 25 82 69 77 82 66 80 50 52 65 68 66 66 82 80 29 66 36 82 82 29 50 25 77 68 77 68 52 36 50 29 82 59 61 82 11 80 69 66 69 80 61 66 69 52 80 82 68 66 82 68 65 69 57 43 68 57 65 36 68 20 82 66 50 52 52 50 65 36 82 80 11 69... | 80 69 59 66 82 52 50 65 36 82 80 61 80 82 68 11 68 25 80 50 11 50 29 68 65 80 82 61 52 80 50 20 82 11 25 82 69 77 82 66 80 50 52 65 68 66 66 82 80 29 66 36 82 82 29 50 25 77 68 77 68 52 36 50 29 82 59 61 82 11 80 69 66 69 80 61 66 69 52 80 82 68 66 82 68 65 69 57 43 68 57 65 36 68 20 82 66 50 52 52 50 65 36 82 80 11 69... | ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE | wallis_cipher | wallis_cipher | null | {} | hard | en | 154 | 154 | 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-0017367 | 6 1 9 12 3 12 15 19 5 4 9 19 1 16 15 19 20 21 18 5 14 15 20 1 19 12 15 7 1 14 15 16 5 14 19 15 21 18 3 5 20 15 15 12 19 1 12 12 15 23 9 14 4 5 16 5 14 4 5 14 20 22 5 18 9 6 9 3 1 20 9 15 14 1 12 1 14 20 21 18 9 14 7 2 18 15 11 5 5 14 9 7 13 1 23 9 20 8 3 18 9 2 19 1 14 4 20 8 5 2 15 13 2 5 13 1 3 8 9 14 5 | 6 1 9 12 3 12 15 19 5 4 9 19 1 16 15 19 20 21 18 5 14 15 20 1 19 12 15 7 1 14 15 16 5 14 19 15 21 18 3 5 20 15 15 12 19 1 12 12 15 23 9 14 4 5 16 5 14 4 5 14 20 22 5 18 9 6 9 3 1 20 9 15 14 1 12 1 14 20 21 18 9 14 7 2 18 15 11 5 5 14 9 7 13 1 23 9 20 8 3 18 9 2 19 1 14 4 20 8 5 2 15 13 2 5 13 1 3 8 9 14 5 | FAIL CLOSED IS A POSTURE NOT A SLOGAN OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 121 | 121 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
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