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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
fractionated-morse-v3-0458 | DWNVEMSJASKX | DWNVEMSJASKX | DOT DASH DOT | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
diana-v2-0322 | PUDJXZYKACJOSBNHABTAAYLLBNJLBAFVDPLLBNXKLEAZRRTSNFXKLSEAWYSUDHRQDOOLDON | PUDJXZYKACJOSBNHABTAAYLLBNJLBAFVDPLLBNXKLEAZRRTSNFXKLSEAWYSUDHRQDOOLDON | QUOTH THE RAVEN NEVERMORE THE BIRD SAT ON THE BUST OF PALLAS JUST ABOVE MY CHAMBER DOOR | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "FORCES"
} | intermediate | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
trifid-v2-0125 | UNCDGLEAETCUCSHAWDFIYUSCWNQMAIPSZEEOMBTNAAFVCJTSJKQTCIAWURAMKBXGNRCNVJJIMMGLNLDUHTYMKSRSIVOBQCCAVYKLLZGACLDACE+KRUXQPBAQPBSCVWDTDECNZJGLCPZJBIECOJBWNJIMTGECOZCUYPOQHQWCLLDE | UNCDGLEAETCUCSHAWDFIYUSCWNQMAIPSZEEOMBTNAAFVCJTSJKQTCIAWURAMKBXGNRCNVJJIMMGLNLDUHTYMKSRSIVOBQCCAVYKLLZGACLDACE+KRUXQPBAQPBSCVWDTDECNZJGLCPZJBIECOJBWNJIMTGECOZCUYPOQHQWCLLDE | 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 | trifid | trifid | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 172 | 172 | cipher_museum | 2.0 | public | null | null |
one-time-pad-055 | ZRQWXETLUQLB | ZRQWXETLUQLB | ATTACK AT DAWN | one_time_pad | one_time_pad | stream | {
"type": "pad",
"value": "ZYXWVUTS (repeating)"
} | expert | en | 12 | 12 | cipher_museum | 0.2 | public | null | null |
porta-174 | KWSZLNVJYFMAJEVZDCJESUSNJXUFJFLCQQAQNCOXRFISWFVUCHWLWPITOLRWIT | KWSZLNVJYFMAJEVZDCJESUSNJXUFJFLCQQAQNCOXRFISWFVUCHWLWPITOLRWIT | THE ENEMY KNOWS THE SYSTEM DESIGN YOUR CIPHER ACCORDINGLY WITH GREAT CARE | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "SECRET"
} | intermediate | en | 62 | 62 | cipher_museum | 0.2 | public | null | null |
cda-0018040 | oror okedy choldaiin shedy chol qokeedy qokal chedal sheedy okal daiin ytedy sharal dainy aiiin otol daral qokedy ytaiin okshy chor ytedy otaiin daral aiiin oxed oror otol daiin raiin otaiin aiiin chol shedy oror sheol qotedy cheol chor qokeedy ytaiin shor shor qokedy shor ytedy oxed sharal ctaiin chol okedy okshy ypch... | oror okedy choldaiin shedy chol qokeedy qokal chedal sheedy okal daiin ytedy sharal dainy aiiin otol daral qokedy ytaiin okshy chor ytedy otaiin daral aiiin oxed oror otol daiin raiin otaiin aiiin chol shedy oror sheol qotedy cheol chor qokeedy ytaiin shor shor qokedy shor ytedy oxed sharal ctaiin chol okedy okshy ypch... | OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES | voynich_render | voynich_render | null | {} | hard | en | 310 | 310 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
kryha-v3-0145 | CNEFUKPIAIGWOOCDWMZQQ | CNEFUKPIAIGWOOCDWMZQQ | THE TELEGRAPH TRANSMITS | kryha | kryha | machine | {
"type": "keyword",
"value": "VIENNA"
} | expert | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
m209-v2-0399 | SQPEIXGNZTZ | SQPEIXGNZTZ | KNOW THYSELF | m209 | m209 | machine | {
"type": "seed",
"value": "VICTORY"
} | expert | en | 11 | 11 | cipher_museum | 2.0 | public | null | null |
cda-0006194 | EIXPRSOOUBIDEISEOTQSMPHTFXSTIPBCHALCIBOANRINRWSAYEHTINIU | EIXPRSOOUBIDEISEOTQSMPHTFXSTIPBCHALCIBOANRINRWSAYEHTINIU | THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION | double_transposition | double_transposition | null | {
"key1": "JUSTICE",
"key2": "PATTERN"
} | medium | en | 56 | 56 | synthetic_educational | null | null | [
"key_length_search",
"anagram_recovery"
] | Double columnar transposition: apply columnar twice for stronger security. |
lorenz-v2-0571 | HEADRUARTERSFIRSTARMYCORPSORDERSFOROCTOBERFOUQTHNINETEENEIGHTEENTHECORPSWILLATTACKATZEQOHOURWITHALLAVAILABLEFORCESTHEOBJECTIVEITTHERIDGEOVERLOOKINGTHEARGONNEFOREST | HEADRUARTERSFIRSTARMYCORPSORDERSFOROCTOBERFOUQTHNINETEENEIGHTEENTHECORPSWILLATTACKATZEQOHOURWITHALLAVAILABLEFORCESTHEOBJECTIVEITTHERIDGEOVERLOOKINGTHEARGONNEFOREST | HEADQUARTERS FIRST ARMY CORPS ORDERS FOR OCTOBER FOURTH NINETEEN EIGHTEEN THE CORPS WILL ATTACK AT ZERO HOUR WITH ALL AVAILABLE FORCES THE OBJECTIVE IS THE RIDGE OVERLOOKING THE ARGONNE FOREST | lorenz | lorenz | machine | {
"type": "seed",
"value": "STURGEON"
} | expert | en | 163 | 163 | cipher_museum | 2.0 | public | null | null |
cda-0015317 | CHTSZGHYSWMPWNISQRJYGFFKLBKZGOIQUIDAGUBWNBAIPRMMRDMIYSZWRXSQHVZFOSUNJXDUWHCFZGFZAWPBWMNLBJVBMXWEKTFOHDQALHVZUFLPHXNVYUHEGBRNXRWLLJOQVSEVQYTDUMVYNWYXDWCGVUAPGXMQOVVRRPTUSPYSULFVDLRSSWW | CHTSZGHYSWMPWNISQRJYGFFKLBKZGOIQUIDAGUBWNBAIPRMMRDMIYSZWRXSQHVZFOSUNJXDUWHCFZGFZAWPBWMNLBJVBMXWEKTFOHDQALHVZUFLPHXNVYUHEGBRNXRWLLJOQVSEVQYTDUMVYNWYXDWCGVUAPGXMQOVVRRPTUSPYSULFVDLRSSWW | PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION A STRONG CLAIM NEEDS STRONG EVIDENCE TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN | vernam | vernam | null | {} | hard | en | 183 | 183 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
affine-011 | LAFSXR VU YMFSH | LAFSXR VU YMFSH | CHANGE OF PLANS | affine | affine | substitution | {
"a": 3,
"b": 5
} | beginner | en | 13 | 15 | cipher_museum | 0.2 | public | null | null |
joseon-yeokhak-v2-0358 | RPYPCLWZCOPCDYFXMPCZYPLWWNZXXFYTNLETZYDDSLWWMPPYNCJAEPOFDTYRESPLAACZGPONTASPCOTDV | RPYPCLWZCOPCDYFXMPCZYPLWWNZXXFYTNLETZYDDSLWWMPPYNCJAEPOFDTYRESPLAACZGPONTASPCOTDV | GENERAL ORDERS NUMBER ONE ALL COMMUNICATIONS SHALL BE ENCRYPTED USING THE APPROVED CIPHER DISK | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "HANGUL"
} | beginner | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v2-0378 | RSMLSRYVMHQBAKIAPBYTGBMUYBMNSLPUVMGDSEWJPGJQAMNNKESRYQYESFAPNYAKGYBMNLQBBLPBRMTLWBFYPUPYTESDVNMPAPUGMGTGHMTBEYAUKRYGJPTBDSIAKEWLYUGJVVVNABYESGLSRYGJVVNSMLSHSGYGTEYKYDPGTESTGDPYUGIQYWLYUBEYPYBBGHPAKIYDPUBYGNR | RSMLSRYVMHQBAKIAPBYTGBMUYBMNSLPUVMGDSEWJPGJQAMNNKESRYQYESFAPNYAKGYBMNLQBBLPBRMTLWBFYPUPYTESDVNMPAPUGMGTGHMTBEYAUKRYGJPTBDSIAKEWLYUGJVVVNABYESGLSRYGJVVNSMLSHSGYGTEYKYDPGTESTGDPYUGIQYWLYUBEYPYBBGHPAKIYDPUBYGNR | WE THE PEOPLE OF THE UNITED STATES IN ORDER TO FORM A MORE PERFECT UNION ESTABLISH JUSTICE INSURE DOMESTIC TRANQUILITY PROVIDE FOR THE COMMON DEFENSE PROMOTE THE GENERAL WELFARE AND SECURE THE BLESSINGS OF LIBERTY | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 207 | 207 | cipher_museum | 2.0 | public | null | null |
double-transposition-v2-0098 | TRILRIENSUODUAEINMUEETNJRUVOSLLRETEELMLEUPULSILLIBAHASGTBLERSRSPEEPTUUPEESEMVO | TRILRIENSUODUAEINMUEETNJRUVOSLLRETEELMLEUPULSILLIBAHASGTBLERSRSPEEPTUUPEESEMVO | LA LIBERTE GUIDANT LE PEUPLE VERS UN AVENIR MEILLEUR ET PLUS JUSTE POUR TOUS LES HOMMES LIBRES | double_transposition | double_transposition | transposition | {
"key1": "PALACE",
"key2": "BATTLE"
} | advanced | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
cda-0003242 | FYAN WBOE HSKP UOEM RTBD IEIP TPBL CLDE ETHR EEER RASE OPSN ASMS UKAT OIWA ROLL TAYH TOEP PVSB ETIF EUOR EQTT UINS UOST OAOF RNIE XSLU FYBR OSEP CRBS OITM UINS OCQR ERWS UNOU DDAS ERH | FYAN WBOE HSKP UOEM RTBD IEIP TPBL CLDE ETHR EEER RASE OPSN ASMS UKAT OIWA ROLL TAYH TOEP PVSB ETIF EUOR EQTT UINS UOST OAOF RNIE XSLU FYBR OSEP CRBS OITM UINS OCQR ERWS UNOU DDAS ERH | POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION | double_transposition | double_transposition | null | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | hard | en | 147 | 147 | synthetic_educational | null | null | [
"key_length_search",
"anagram_recovery"
] | Double columnar transposition: apply columnar twice for stronger security. |
vic-v3-0103 | 90834894069048042884489 | 90834894069048042884489 | THE SENATE DECREES | vic | vic | substitution | {
"type": "keyword",
"value": "NICKEL"
} | advanced | en | 23 | 23 | cipher_museum | 2.0 | public | null | null |
bifid-v2-0135 | DBTWINHAKTROD | DBTWINHAKTROD | AWAIT MY SIGNAL | bifid | bifid | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
cda-0014626 | -... .-. ..- - . / ..-. --- .-. -.-. . / .-- --- .-. -.- ... / --- -. .-.. -.-- / .-- .... . -. / - .... . / -.- . -.-- / ... .--. .- -.-. . / .. ... / ... -- .- .-.. .-.. / ..-. .- .. .-.. / -.-. .-.. --- ... . -.. / .. ... / .- / .--. --- ... - ..- .-. . / -. --- - / .- / ... .-.. --- --. .- -. / .... .. .-.. .-.. / ... | -... .-. ..- - . / ..-. --- .-. -.-. . / .-- --- .-. -.- ... / --- -. .-.. -.-- / .-- .... . -. / - .... . / -.- . -.-- / ... .--. .- -.-. . / .. ... / ... -- .- .-.. .-.. / ..-. .- .. .-.. / -.-. .-.. --- ... . -.. / .. ... / .- / .--. --- ... - ..- .-. . / -. --- - / .- / ... .-.. --- --. .- -. / .... .. .-.. .-.. / ... | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL FAIL CLOSED IS A POSTURE NOT A SLOGAN HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS | morse_code | morse_code | null | {} | hard | en | 177 | 177 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
cda-0002245 | UVYY PVCURE HFRF YVARNE NYTROEN GB RAPELCG OYBPXF BS YRGGREF CHOYVP VASENFGEHPGHER QRFREIRF PNERSHY QRFVTA | UVYY PVCURE HFRF YVARNE NYTROEN GB RAPELCG OYBPXF BS YRGGREF CHOYVP VASENFGEHPGHER QRFREIRF PNERSHY QRFVTA | HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 92 | 92 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
cardano-autokey-v3-0101 | UVGALWWZZRGXIRGAJGRGNLPGASACPRAPHBFQLGALWAHDHWALAKFBYTHQDTVEVKWMYGLTTPSONQNOTAPVZVGHOUHVNNMHWALSFPMTLXRVDBTTBWBGAHTXBMALIVRHEPHAAALJFLWZTFPEAPWSNQWALSFSJBLGTUALNRXL | UVGALWWZZRGXIRGAJGRGNLPGASACPRAPHBFQLGALWAHDHWALAKFBYTHQDTVEVKWMYGLTTPSONQNOTAPVZVGHOUHVNNMHWALSFPMTLXRVDBTTBWBGAHTXBMALIVRHEPHAAALJFLWZTFPEAPWSNQWALSFSJBLGTUALNRXL | IN THE SEVENTEENTH CENTURY ISAAC NEWTON SYNTHESIZED THE WORK OF COPERNICUS GALILEO AND KEPLER INTO A UNIFIED THEORY OF GRAVITATION THAT EXPLAINED BOTH THE FALL OF APPLES AND THE ORBITS OF PLANETS | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "MILAN"
} | advanced | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
geheimschreiber-v2-0348 | VZTEHCBGTTBXRILVZGBXIYKBDGVEPCPBMDHPZGXVKTTFLAMRWKUCQALDOEWMJEFIBRUWSCHPCVHPOXISCK | VZTEHCBGTTBXRILVZGBXIYKBDGVEPCPBMDHPZGXVKTTFLAMRWKUCQALDOEWMJEFIBRUWSCHPCVHPOXISCK | THE ZIMMERMANN TELEGRAM WAS DECODED BY ROOM FORTY IN LONDON AND BROUGHT AMERICA INTO THE GREAT WAR | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "GOTHIC"
} | expert | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
rail-fence-v2-0088 | CNHAEETLOPTEDCFCHNCLANRTOAHRTWUEYUNOANPIESYSRODAVHEEEPECERNEHETTMVSCEDOCSDIERCE | CNHAEETLOPTEDCFCHNCLANRTOAHRTWUEYUNOANPIESYSRODAVHEEEPECERNEHETTMVSCEDOCSDIERCE | CLAUDE SHANNON PROVED THAT THE ONE TIME PAD ACHIEVES PERFECT SECRECY WHEN USED CORRECTLY ONCE | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 7
} | intermediate | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
wheatstone-v2-0292 | KLPSDQSBPDLHTQNEPJILUPQA | KLPSDQSBPDLHTQNEPJILUPQA | NORTH STAR HOLDS FIRM COURSE | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "BRITAIN"
} | advanced | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-vf-0062 | SMMH ELG YM SCEJJ ADLG HLOIH ELG DT SCEJJ NM OPMLMG ULTO YOU ELG EJJ SCEJJ RMIMDVM | SMMH ELG YM SCEJJ ADLG HLOIH ELG DT SCEJJ NM OPMLMG ULTO YOU ELG EJJ SCEJJ RMIMDVM | SEEK AND YE SHALL FIND KNOCK AND IT SHALL BE OPENED UNTO YOU AND ALL SHALL RECEIVE | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "ENIGMA"
} | beginner | en | 66 | 82 | cipher_museum | 2.0 | public | null | null |
copiale-v2-0151 | I3 E4 V2 K7 Y6 I1 V2 G4 R3 D5 E4 N2 B4 M8 | I3 E4 V2 K7 Y6 I1 V2 G4 R3 D5 E4 N2 B4 M8 | TRUST BUT VERIFY | copiale | copiale | substitution | {
"type": "keyword",
"value": "TEMPLE"
} | advanced | en | 28 | 41 | cipher_museum | 2.0 | public | null | null |
wallis-cipher-v2-0102 | 90 60 33 59 56 63 55 91 90 22 81 52 28 10 91 90 31 53 87 55 54 63 34 33 10 91 90 42 49 91 90 60 81 91 90 76 89 53 55 91 90 37 56 24 91 90 40 42 10 43 91 90 82 72 28 85 33 24 43 54 34 55 91 90 52 87 91 90 63 56 26 89 60 25 10 28 42 85 91 90 31 53 81 34 87 33 24 54 91 90 21 56 91 90 76 28 52 91 90 43 54 14 55 91 | 90 60 33 59 56 63 55 91 90 22 81 52 28 10 91 90 31 53 87 55 54 63 34 33 10 91 90 42 49 91 90 60 81 91 90 76 89 53 55 91 90 37 56 24 91 90 40 42 10 43 91 90 82 72 28 85 33 24 43 54 34 55 91 90 52 87 91 90 63 56 26 89 60 25 10 28 42 85 91 90 31 53 81 34 87 33 24 54 91 90 21 56 91 90 76 28 52 91 90 43 54 14 55 91 | LIBERTÉ ÉGALITÉ FRATERNITÉ OU LA MORT CES MOTS DÉFINISSENT LA REVOLUTION FRANÇAISE DE MIL SEPT | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "OXFORD"
} | expert | en | 208 | 311 | cipher_museum | 2.0 | public | null | null |
vic-v2-0403 | 8128621685811686908268990684286928380848979118190822811269018392218389864934872860145839089894911802904908228926 | 8128621685811686908268990684286928380848979118190822811269018392218389864934872860145839089894911802904908228926 | GENERAL GRANT HAS TAKEN VICKSBURG THE GREAT RIVER IS NOW OPEN FROM ITS SOURCE TO THE SEA | vic | vic | substitution | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 112 | 112 | cipher_museum | 2.0 | public | null | null |
cda-0013071 | THAN ZIEL INDZ EHWO LLAC HEEG AHMO ASIL INTK INTH ANZI EDZE HMOA SITH ANZI ENOD AIHG AHDZ EHDI BEHL INAK HANO DAIH DIBE HYAZ ZIEB ENAA STSO SIWO LLAC HEEK LIZZ IEDZ EHNA ASTS OSIT KIND IBEH NODA IHDI BEHD ZEHL INWO LLAC HEEG AHBE DZEH GAH | THAN ZIEL INDZ EHWO LLAC HEEG AHMO ASIL INTK INTH ANZI EDZE HMOA SITH ANZI ENOD AIHG AHDZ EHDI BEHL INAK HANO DAIH DIBE HYAZ ZIEB ENAA STSO SIWO LLAC HEEK LIZZ IEDZ EHNA ASTS OSIT KIND IBEH NODA IHDI BEHD ZEHL INWO LLAC HEEG AHBE DZEH GAH | THE ARCHITECTURE SHOULD MAKE MISUSE HARDER | navajo_code | navajo_code | null | {} | hard | en | 191 | 191 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
scytale-v3-0270 | TEINSGFHTYHONTALOSEXEFRHBAUIEXBBAEONRNNXARGSVDMNFXTIEKEFOIOXTTDIEONNRXLAIENRTETX | TEINSGFHTYHONTALOSEXEFRHBAUIEXBBAEONRNNXARGSVDMNFXTIEKEFOIOXTTDIEONNRXLAIENRTETX | THE BATTLE OF BRITAIN RAGED IN THE SKIES ABOVE ENGLAND FOR FOUR MONTHS IN NINETEEN FORTY | scytale | scytale | transposition | {
"type": "integer",
"value": 10
} | intermediate | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
kryptos-v2-0348 | KPFPDZCAJNEHKUASFLVHCNVAHSJVSKEFWBVRAGCVENEBMCHLVIVQHPBVLYIBYZYWTDEDKURNIIBBYPNXEV | KPFPDZCAJNEHKUASFLVHCNVAHSJVSKEFWBVRAGCVENEBMCHLVIVQHPBVLYIBYZYWTDEDKURNIIBBYPNXEV | THE ZIMMERMANN TELEGRAM WAS DECODED BY ROOM FORTY IN LONDON AND BROUGHT AMERICA INTO THE GREAT WAR | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "VIRTUAL"
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v3-0182 | LFUDUSDVAHJQHSTADWLKFQWAVXFXJUDMTPRSHIURHOBKTWQXRJVQLBPRJPMWUBPVWATQVHBWLTQVHABAIPMFQRRGC | LFUDUSDVAHJQHSTADWLKFQWAVXFXJUDMTPRSHIURHOBKTWQXRJVQLBPRJPMWUBPVWATQVHBWLTQVHABAIPMFQRRGC | THE DEAD DROP ALLOWS AGENTS TO EXCHANGE INFORMATION WITHOUT MEETING FACE TO FACE IN PUBLIC | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 89 | 89 | cipher_museum | 2.0 | public | null | null |
atbash-v3-0009 | IVMWVI FMGL XZVHZI | IVMWVI FMGL XZVHZI | RENDER UNTO CAESAR | atbash | atbash | substitution | {
"type": "none",
"value": null
} | beginner | en | 16 | 18 | cipher_museum | 2.0 | public | null | null |
great-cipher-v3-0078 | 108 122 169 174 174 182 163 118 141 166 100 133 172 102 154 171 140 152 167 150 100 178 114 113 106 128 171 178 129 131 170 156 167 164 143 133 105 173 160 167 177 166 178 167 152 129 171 131 154 161 168 166 179 131 154 168 166 129 163 151 136 107 125 | 108 122 169 174 174 182 163 118 141 166 100 133 172 102 154 171 140 152 167 150 100 178 114 113 106 128 171 178 129 131 170 156 167 164 143 133 105 173 160 167 177 166 178 167 152 129 171 131 154 161 168 166 179 131 154 168 166 129 163 151 136 107 125 | THE DEAD DROP ALLOWS AGENTS TO EXCHANGE INFORMATION WITHOUT MEETING FACE TO FACE IN PUBLIC | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "VERSAILLES"
} | expert | en | 189 | 251 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-v2-0199 | YPFWVRJP3PBXXLYAMCRU4LLJWXXLYAMCDAY23FH764Z3FLRAYYANAXXLZQPQEXJTNBVZ63PMC | YPFWVRJP3PBXXLYAMCRU4LLJWXXLYAMCDAY23FH764Z3FLRAYYANAXXLZQPQEXJTNBVZ63PMC | THE SECRET OF GETTING AHEAD IS GETTING STARTED ONE STEP AT A TIME GETS YOU VERY FAR INDEED | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "LIBERTY"
} | expert | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v3-0394 | UHBTVASDDZTZYQWKPYGEOJVASAPUMWAKWNPDLTPYMOHXPFMCSVALTRAHBBVLRZSAUWGMJGESWYFRIAXPCUBGR | UHBTVASDDZTZYQWKPYGEOJVASAPUMWAKWNPDLTPYMOHXPFMCSVALTRAHBBVLRZSAUWGMJGESWYFRIAXPCUBGR | CONGRESS SHALL MAKE NO LAW RESPECTING AN ESTABLISHMENT OF RELIGION OR PROHIBITING THE FREE EXERCISE | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "STONEWALL"
} | intermediate | en | 85 | 85 | cipher_museum | 2.0 | public | null | null |
cda-0019445 | 20.5.8 17.5.7 3.5.8 13.1.10 14.6.4 4.5.6 16.4.3 14.5.10 15.1.1 7.1.5 5.3.7 11.5.9 5.2.4 20.6.10 8.6.7 3.6.1 14.3.1 9.3.7 19.6.5 5.5.5 10.2.3 16.2.3 9.4.9 5.2.10 5.4.6 4.3.5 20.1.8 10.6.10 8.1.3 7.6.10 15.5.7 12.5.6 10.1.6 16.4.1 6.5.9 7.3.1 15.6.10 11.3.9 9.6.8 18.4.8 9.3.10 20.5.5 12.1.1 2.5.6 7.5.3 4.6.1 11.6.6 17.6.... | 20.5.8 17.5.7 3.5.8 13.1.10 14.6.4 4.5.6 16.4.3 14.5.10 15.1.1 7.1.5 5.3.7 11.5.9 5.2.4 20.6.10 8.6.7 3.6.1 14.3.1 9.3.7 19.6.5 5.5.5 10.2.3 16.2.3 9.4.9 5.2.10 5.4.6 4.3.5 20.1.8 10.6.10 8.1.3 7.6.10 15.5.7 12.5.6 10.1.6 16.4.1 6.5.9 7.3.1 15.6.10 11.3.9 9.6.8 18.4.8 9.3.10 20.5.5 12.1.1 2.5.6 7.5.3 4.6.1 11.6.6 17.6.... | HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | arnold_andre | arnold_andre | null | {} | hard | en | 141 | 141 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
cardano-autokey-v2-0114 | FAHTHBGALJNZJLWDYMTOJNHURPGVGALCCERFTTILCZFURBRXAVIMSNQHMONAABHQUVHDNQVAFQRRAYVIELWATVJGBFZLPODSKDLVZWOEBAPVNNLQLTTXMVEVFFPWTWBNGGIVFLMALYHVBXHVLTTXWKZHLWMFJWVI | FAHTHBGALJNZJLWDYMTOJNHURPGVGALCCERFTTILCZFURBRXAVIMSNQHMONAABHQUVHDNQVAFQRRAYVIELWATVJGBFZLPODSKDLVZWOEBAPVNNLQLTTXMVEVFFPWTWBNGGIVFLMALYHVBXHVLTTXWKZHLWMFJWVI | 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 | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "MILAN"
} | advanced | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
cda-0013760 | GCFR ENXW HFVL ZGCL PNVZ VCFE BLPL KGTF EOVL ONIM JPKU TLMV RAJD ILMV QDUG ZHYI RVRK RZUI AGTC ILVV ZTAL ZLCG XLLJ UIIM NXZB EQIE YOVP YXIS EWPR SOKQ RVEE PUWU QCCN RVOR YQCH ILGG FTBP TYFG YWMU IEVW KMII NRTG JTRO NN | GCFR ENXW HFVL ZGCL PNVZ VCFE BLPL KGTF EOVL ONIM JPKU TLMV RAJD ILMV QDUG ZHYI RVRK RZUI AGTC ILVV ZTAL ZLCG XLLJ UIIM NXZB EQIE YOVP YXIS EWPR SOKQ RVEE PUWU QCCN RVOR YQCH ILGG FTBP TYFG YWMU IEVW KMII NRTG JTRO NN | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER FAIL CLOSED IS A POSTURE NOT A SLOGAN | running_key | running_key | null | {} | hard | en | 174 | 174 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
cda-0013603 | ERYQ MVMH TRYH HADZ VNZK QKIH APCM VNFX MNQC ZLMD ZHON VSNU HAVN ZOOR FDBM KAGA NDXP DLDB KYXJ XIXK XNQW BSBG DPML VZQT WG | ERYQ MVMH TRYH HADZ VNZK QKIH APCM VNFX MNQC ZLMD ZHON VSNU HAVN ZOOR FDBM KAGA NDXP DLDB KYXJ XIXK XNQW BSBG DPML VZQT WG | THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION | vernam | vernam | null | {} | hard | en | 98 | 98 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
gronsfeld-v3-0117 | VJGECUVNGKUUWTTQWPFGF | VJGECUVNGKUUWTTQWPFGF | THE CASTLE IS SURROUNDED | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "22222"
} | intermediate | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
cda-0003276 | CHOYV PVASE NFGEH PGHER QRFRE IRFPN ERSHY QRFVT ANGON FURAP BQRFO LERIR EFVAT GURNY CUNOR GRIRE LFLFG RZARR QFNAU BARFG GUERN GZBQR Y | CHOYV PVASE NFGEH PGHER QRFRE IRFPN ERSHY QRFVT ANGON FURAP BQRFO LERIR EFVAT GURNY CUNOR GRIRE LFLFG RZARR QFNAU BARFG GUERN GZBQR Y | PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN ATBASH ENCODES BY REVERSING THE ALPHABET EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 111 | 111 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
lorenz-v3-0161 | THEBATTLEOFBRITAINRAGEDKNTHESKIESABOVEENGLANDFORFOURMOPTHSINNINETEENFORTY | THEBATTLEOFBRITAINRAGEDKNTHESKIESABOVEENGLANDFORFOURMOPTHSINNINETEENFORTY | THE BATTLE OF BRITAIN RAGED IN THE SKIES ABOVE ENGLAND FOR FOUR MONTHS IN NINETEEN FORTY | lorenz | lorenz | machine | {
"type": "seed",
"value": "FISH"
} | expert | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
cda-0019211 | BE / TKIN / MA-E / MA-E / TKIN / DZEH / WOL-LA-CHEE / TSAH / BE / LIN / DZEH / DIBEH-YAZZIE / DIBEH-YAZZIE / NA-AS-TSO-SI / WOL-LA-CHEE / TSAH / TKIN / TSAH / THAN-ZIE / GAH / A-KHA / BE / NO-DA-IH / MOASI / DZEH / BE ... | BE / TKIN / MA-E / MA-E / TKIN / DZEH / WOL-LA-CHEE / TSAH / BE / LIN / DZEH / DIBEH-YAZZIE / DIBEH-YAZZIE / NA-AS-TSO-SI / WOL-LA-CHEE / TSAH / TKIN / TSAH / THAN-ZIE / GAH / A-KHA / BE / NO-DA-IH / MOASI / DZEH / BE ... | DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION | navajo_code | navajo_code | null | {} | hard | en | 218 | 218 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
cda-0016128 | 16.23.12 17.16.7 10.3.9 2.9.2 1.32.13 11.2.4 20.2.9 10.25.13 8.24.2 13.34.5 13.5.2 7.12.5 18.4.12 8.20.7 5.7.5 9.31.11 11.43.6 5.18.15 6.2.1 10.23.15 8.37.6 15.11.12 14.39.13 17.19.13 12.22.13 2.26.7 10.43.12 17.25.7 14.43.9 16.32.3 13.13.5 15.41.11 13.13.3 1.25.1 2.22.14 9.25.13 2.30.2 14.11.11 7.33.11 20.28.15 13.39.... | 16.23.12 17.16.7 10.3.9 2.9.2 1.32.13 11.2.4 20.2.9 10.25.13 8.24.2 13.34.5 13.5.2 7.12.5 18.4.12 8.20.7 5.7.5 9.31.11 11.43.6 5.18.15 6.2.1 10.23.15 8.37.6 15.11.12 14.39.13 17.19.13 12.22.13 2.26.7 10.43.12 17.25.7 14.43.9 16.32.3 13.13.5 15.41.11 13.13.3 1.25.1 2.22.14 9.25.13 2.30.2 14.11.11 7.33.11 20.28.15 13.39.... | GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | book_cipher | book_cipher | null | {} | hard | en | 175 | 175 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
lorenz-v2-0216 | LAVIDAESSUENOYLOSSUENOSQUENOSSONPARATODOSLOSQUEVIVENBALOELCIELOETERNO | LAVIDAESSUENOYLOSSUENOSQUENOSSONPARATODOSLOSQUEVIVENBALOELCIELOETERNO | LA VIDA ES SUENO Y LOS SUENOS SUENOS SON PARA TODOS LOS QUE VIVEN BAJO EL CIELO ETERNO | lorenz | lorenz | machine | {
"type": "seed",
"value": "FISH"
} | expert | en | 69 | 69 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-v3-0153 | HFIQXDHPIEWRCUSKPTCHBYSJRDYYKQXZGKDMQZITNXDXQNIYZNAHUMRDYVPTRUKYGUIXLEEDP | HFIQXDHPIEWRCUSKPTCHBYSJRDYYKQXZGKDMQZITNXDXQNIYZNAHUMRDYVPTRUKYGUIXLEEDP | THE BATTLE OF BRITAIN RAGED IN THE SKIES ABOVE ENGLAND FOR FOUR MONTHS IN NINETEEN FORTY | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "6,1,4,2,5,3"
} | expert | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v2-0483 | MJN ANKYTNEM ZYFF JUFV YMX CUXYMYUE OEMYF ANYELUAPNTNEMX RAAYDN LAUT MJN NRXMNAE PUTTREV CUXM JNAN | MJN ANKYTNEM ZYFF JUFV YMX CUXYMYUE OEMYF ANYELUAPNTNEMX RAAYDN LAUT MJN NRXMNAE PUTTREV CUXM JNAN | THE REGIMENT WILL HOLD ITS POSITION UNTIL REINFORCEMENTS ARRIVE FROM THE EASTERN COMMAND POST HERE | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "WISDOM"
} | intermediate | en | 84 | 98 | cipher_museum | 2.0 | public | null | null |
copiale-v3-0004 | B1 L1 R8 N2 O5 R5 A1 X0 O0 T7 T7 Y6 A3 D0 T1 U6 R8 A3 T1 I3 | B1 L1 R8 N2 O5 R5 A1 X0 O0 T7 T7 Y6 A3 D0 T1 U6 R8 A3 T1 I3 | THE LEGIONS STAND READY | copiale | copiale | substitution | {
"type": "keyword",
"value": "MASONIC"
} | advanced | en | 40 | 59 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v2-0554 | IOJDYZEJTBOZULKGCTARPVIIGTJQWCCSHVCVSJRCFUVHVTTJFCLGSLPEQOYNTXFVTDLWDMTRJW | IOJDYZEJTBOZULKGCTARPVIIGTJQWCCSHVCVSJRCFUVHVTTJFCLGSLPEQOYNTXFVTDLWDMTRJW | GOOD NIGHT GOOD NIGHT PARTING IS SUCH SWEET SORROW THAT I SHALL SAY GOOD NIGHT TILL MORROW | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "CAVALRY"
} | intermediate | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
scytale-v3-0073 | BTTNAPSLLHHHRESLEEEETAHESMYRHCADSESIAELSEEHTNMLODKATDABNAFLHTKESROLEHECXERIEERAX | BTTNAPSLLHHHRESLEEEETAHESMYRHCADSESIAELSEEHTNMLODKATDABNAFLHTKESROLEHECXERIEERAX | BLESSED ARE THE MEEK FOR THEY SHALL INHERIT THE EARTH AND THE PEACEMAKERS SHALL BE CALLED SONS | scytale | scytale | transposition | {
"type": "integer",
"value": 8
} | intermediate | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
nomenclator-v3-0025 | 03 08 01 18 20 60 21 14 11 14 15 23 14 | 03 08 01 18 20 60 21 14 11 14 15 23 14 | CHART THE UNKNOWN | nomenclator | nomenclator | nomenclator | {
"type": "none",
"value": null
} | expert | en | 26 | 38 | cipher_museum | 2.0 | public | null | null |
bazeries-v2-0566 | OLGHAQPXJPBYOHAMHAGFAPBYFVQLKGFJHAQKHJAQHDVLYHBGHOEKBKQPFMKHXIPHOSVGGBQPPOHQF | OLGHAQPXJPBYOHAMHAGFAPBYFVQLKGFJHAQKHJAQHDVLYHBGHOEKBKQPFMKHXIPHOSVGGBQPPOHQF | THE LORD IS MY SHEPHERD I SHALL NOT WANT HE MAKETH ME LIE DOWN IN GREEN PASTURES BY STILL WATERS | bazeries | bazeries | transposition | {
"type": "integer",
"value": 53
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
cda-0011215 | SYSEUROATPETDICEEXFENESILOTOUNTHCECLOEDTDIOARTXCIUXXLSIOHLILOEIESUAURILTRNDNSNIEFDACXXLUECIMTEAUYSEDMITSBDCGCLXHINONSUX | SYSEUROATPETDICEEXFENESILOTOUNTHCECLOEDTDIOARTXCIUXXLSIOHLILOEIESUAURILTRNDNSNIEFDACXXLUECIMTEAUYSEDMITSBDCGCLXHINONSUX | SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS THE INDEX OF COINCIDENCE IS A USEFUL CLUE | stager_route | stager_route | null | {
"cols": 7
} | hard | en | 119 | 119 | synthetic_educational | null | null | [] | |
cardano-autokey-v2-0107 | RTILJUQFVENQVWZZRLCERJSGUCILWFTALVJTSFIANAYTFKAVBGAPAUQBGBVRRGTNRAJNTBWBPQBPGMDZHLVYTJFVKRYNQGHHLKCTXHWHHALTGFDDGABBWBGAHTTLWXQRNRVGTVETXHHUKUL | RTILJUQFVENQVWZZRLCERJSGUCILWFTALVJTSFIANAYTFKAVBGAPAUQBGBVRRGTNRAJNTBWBPQBPGMDZHLVYTJFVKRYNQGHHLKCTXHWHHALTGFDDGABBWBGAHTTLWXQRNRVGTVETXHHUKUL | FOURSCORE AND SEVEN YEARS AGO OUR FATHERS BROUGHT FORTH ON THIS CONTINENT A NEW NATION CONCEIVED IN LIBERTY AND DEDICATED TO THE PROPOSITION THAT ALL MEN ARE CREATED EQUAL | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "MILAN"
} | advanced | en | 143 | 143 | cipher_museum | 2.0 | public | null | null |
vernam-053 | QTGOYUBMCKAYCEXTGQPFGWOUHWYKKQECSXDZBDCMNEGRAKSNIHYIVYOQCDNQGS | QTGOYUBMCKAYCEXTGQPFGWOUHWYKKQECSXDZBDCMNEGRAKSNIHYIVYOQCDNQGS | THE ENEMY KNOWS THE SYSTEM DESIGN YOUR CIPHER ACCORDINGLY WITH GREAT CARE | vernam | vernam | stream | {
"type": "pad",
"value": "XMCKLQPOS (repeating)"
} | expert | en | 62 | 62 | cipher_museum | 0.2 | public | null | null |
columnar-transposition-v3-0424 | EEETARSDSNCEEHTE | EEETARSDSNCEEHTE | THE SENATE DECREES | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "DRAGON"
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
bazeries-197 | AJRARSDRLANISLH | AJRARSDRLANISLH | MEET AT THE OLD OAK | bazeries | bazeries | transposition | {
"type": "integer",
"value": 7
} | advanced | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
trifid-v2-0558 | +ZNEGDEKEDQBFOCSPGASJTPLPEZLJVTKNYZPEHSODFHMTTWJXOJJLG+DSYOXJMCCHESMBPPYXGQ | +ZNEGDEKEDQBFOCSPGASJTPLPEZLJVTKNYZPEHSODFHMTTWJXOJJLG+DSYOXJMCCHESMBPPYXGQ | ARMY OF THE POTOMAC CROSSES THE RAPPAHANNOCK TONIGHT ABSOLUTE SILENCE IS IMPERATIVE NOW | trifid | trifid | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
four-square-v3-0337 | GKLIQBIBALPKGCLPLQNUQBLKAKBBEPHKDNFHSAMQLTOOSGAFRQDVDDSNLFUUHBDNWQRERSREAZ | GKLIQBIBALPKGCLPLQNUQBLKAKBBEPHKDNFHSAMQLTOOSGAFRQDVDDSNLFUUHBDNWQRERSREAZ | DO NOT GO GENTLE INTO THAT GOOD NIGHT OLD AGE SHOULD BURN AND RAVE AT CLOSE OF DAY RAGE RAGE | four_square | four_square | polygraphic | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-240 | HCIHNJXBIBEDAQCCSSMXMCRRDWNEVSETBHQVWDEWOSCSAQXMDLUXNMTHTHNODSSNMRQDMTDCJRCOEXSHCVCEWNIBMRSKVWCNSNMTETMCNUTGCTIHDLGTMXKVSETBHXMCQSSMXKRDAWNEVIEVLADWNGWOIHNCSBGCOXECWNERNDQF | HCIHNJXBIBEDAQCCSSMXMCRRDWNEVSETBHQVWDEWOSCSAQXMDLUXNMTHTHNODSSNMRQDMTDCJRCOEXSHCVCEWNIBMRSKVWCNSNMTETMCNUTGCTIHDLGTMXKVSETBHXMCQSSMXKRDAWNEVIEVLADWNGWOIHNCSBGCOXECWNERNDQF | CRYPTANALYSIS IS THE ART OF BREAKING CODES WITHOUT THE KEY AND IT HAS BEEN PRACTICED FOR AS LONG AS THERE HAVE BEEN CODES TO BREAK THE HISTORY OF CRYPTOLOGY IS A BATTLE OF WITS | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 172 | 172 | cipher_museum | 0.2 | public | null | null |
cda-0019308 | THAN-ZIE / LIN / DZEH / A-KHA / TSAH / DZEH / THAN-ZIE / TKIN / NA-AS-TSO-SI / DZEH / CLA-GI-AIH / WOL-LA-CHEE / BE / TKIN / DIBEH / THAN-ZIE / LIN / DZEH / A-KHA / GAH / DZEH / THAN-ZIE / TKIN / MOASI / WOL-LA-CHEE / DI... | THAN-ZIE / LIN / DZEH / A-KHA / TSAH / DZEH / THAN-ZIE / TKIN / NA-AS-TSO-SI / DZEH / CLA-GI-AIH / WOL-LA-CHEE / BE / TKIN / DIBEH / THAN-ZIE / LIN / DZEH / A-KHA / GAH / DZEH / THAN-ZIE / TKIN / MOASI / WOL-LA-CHEE / DI... | THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY CERTAINLY | navajo_code | navajo_code | null | {} | hard | en | 230 | 230 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
columnar-transposition-375 | RBTGAEOIIENSPON | RBTGAEOIIENSPON | OPERATION BEGINS | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "PYTHON"
} | intermediate | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
bacon-cipher-v2-0004 | BAAAB BAABA ABBAB BAAAA ABABB BAABA AABBB AABAA AAAAB BAAAA AABAA AAAAA AAABA AABBB | BAAAB BAABA ABBAB BAAAA ABABB BAABA AABBB AABAA AAAAB BAAAA AABAA AAAAA AAABA AABBB | STORM THE BREACH | bacon_cipher | bacon_cipher | steganography | {
"type": "none",
"value": null
} | beginner | en | 70 | 83 | cipher_museum | 2.0 | public | null | null |
stager-route-v2-0326 | RTIORWREIERTHECEITNTNGHIBOEONNNAGATHFHCAENOMNKTUCOLFBDYITPREALUNSLFEOERSPOLTT | RTIORWREIERTHECEITNTNGHIBOEONNNAGATHFHCAENOMNKTUCOLFBDYITPREALUNSLFEOERSPOLTT | RECONNOITER THE ENEMY POSITION AND REPORT BACK BEFORE NIGHTFALL WITH A FULL STRENGTH COUNT | stager_route | stager_route | transposition | {
"type": "integer",
"value": 11
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-059 | ELGK2ECH4LGEQEOCERKA7ANE2EMPIPECRNPF7CZP77KYL3MRZPGCHBDSICHIUICZMX5MKITERNPG7MYLSIRSFG7M377BFOGVIKZDFMQ6K6IAZFSEP277524M7OFIL2CPHFXOAE727DOGTKJOJEIB | ELGK2ECH4LGEQEOCERKA7ANE2EMPIPECRNPF7CZP77KYL3MRZPGCHBDSICHIUICZMX5MKITERNPG7MYLSIRSFG7M377BFOGVIKZDFMQ6K6IAZFSEP277524M7OFIL2CPHFXOAE727DOGTKJOJEIB | 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 | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "XMCKL"
} | expert | en | 148 | 148 | cipher_museum | 0.2 | public | null | null |
cda-0020344 | MOASI / DIBEH-YAZZIE / WOL-LA-CHEE / DIBEH / DIBEH / TKIN / MOASI / WOL-LA-CHEE / DIBEH-YAZZIE / MOASI / TKIN / CLA-GI-AIH / LIN / DZEH / GAH / DIBEH / THAN-ZIE / DZEH / WOL-LA-CHEE / MOASI / LIN / GLOE-IH / LIN / TSAH-AS-ZIH ... | MOASI / DIBEH-YAZZIE / WOL-LA-CHEE / DIBEH / DIBEH / TKIN / MOASI / WOL-LA-CHEE / DIBEH-YAZZIE / MOASI / TKIN / CLA-GI-AIH / LIN / DZEH / GAH / DIBEH / THAN-ZIE / DZEH / WOL-LA-CHEE / MOASI / LIN / GLOE-IH / LIN / TSAH-AS-ZIH ... | CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY | navajo_code | navajo_code | null | {} | hard | en | 229 | 229 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
cda-0014043 | 00388 06370 0695 0365 06032 02605 01571 4412 0959 4801 01306 01630 6045 0709 7933 5674 01582 7000 1610 05703 06039 02843 4401 02199 6298 02527 01583 00360 3768 05033 02531 00364 00648 1650 6357 00725 5682 6665 06369 1587 1892 4808 5669 00971 1635 07306 04744 5743 03470 05973 04746 04478 03795 07884 07239 2513 1651 0448... | 00388 06370 0695 0365 06032 02605 01571 4412 0959 4801 01306 01630 6045 0709 7933 5674 01582 7000 1610 05703 06039 02843 4401 02199 6298 02527 01583 00360 3768 05033 02531 00364 00648 1650 6357 00725 5682 6665 06369 1587 1892 4808 5669 00971 1635 07306 04744 5743 03470 05973 04746 04478 03795 07884 07239 2513 1651 0448... | ATBASH ENCODES BY REVERSING THE ALPHABET BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | zimmermann | zimmermann | null | {} | hard | en | 167 | 167 | synthetic_educational | null | null | [
"codebook_frequency",
"number_group_analysis"
] | Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher. |
columnar-transposition-262 | FRSAUOIHEATDTERWRR | FRSAUOIHEATDTERWRR | AWAIT FURTHER ORDERS | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "ENIGMA"
} | intermediate | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
cda-0003972 | TMNOCPHCIARAOCEIIEONSOKHEISYESRBGRREVDTTCSLSIAORTEAHEMUOELBPTCAHPIEESNECRCONSSMPTNEULMSPSTORERIOHEYARSAENCESTATERPERONETABAATWLHAALCEYOEIKETUCTTSTHIRILETDHIGIROAPCHCEENEHTDTFIMFRWKEL | TMNOCPHCIARAOCEIIEONSOKHEISYESRBGRREVDTTCSLSIAORTEAHEMUOELBPTCAHPIEESNECRCONSSMPTNEULMSPSTORERIOHEYARSAENCESTATERPERONETABAATWLHAALCEYOEIKETUCTTSTHIRILETDHIGIROAPCHCEENEHTDTFIMFRWKEL | THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL | stager_route | stager_route | null | {
"cols": 7
} | hard | en | 182 | 182 | synthetic_educational | null | null | [
"column_count_search",
"route_pattern_search"
] | Route (Stager) cipher: write into rectangle, read via alternating column route. |
fractionated-morse-254 | IPAEOOAEVLYLGBQAQW | IPAEOOAEVLYLGBQAQW | ALL IS LOST RETREAT | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "CRYPTIC"
} | advanced | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
trifid-v2-0630 | ODVXTQRORT+CUBPUS+DRTSUPQJIPOWYEFBB+YJBODZXKBEW+USJCGQC+UATQUDQFUTJB+CJUKDPBQUZBMJATFJ+HDOCSONVBZKUIZIIJHCQUFJBVRRPMFERRDJXXXZLFTTJDVOTD+ZBOCCWXOFJWZSGSSMQETMGUISAJSUBM+QVT+STEYLU | ODVXTQRORT+CUBPUS+DRTSUPQJIPOWYEFBB+YJBODZXKBEW+USJCGQC+UATQUDQFUTJB+CJUKDPBQUZBMJATFJ+HDOCSONVBZKUIZIIJHCQUFJBVRRPMFERRDJXXXZLFTTJDVOTD+ZBOCCWXOFJWZSGSSMQETMGUISAJSUBM+QVT+STEYLU | WE THE PEOPLE OF THE UNITED STATES IN ORDER TO FORM A MORE PERFECT UNION ESTABLISH JUSTICE INSURE DOMESTIC TRANQUILITY PROVIDE FOR THE COMMON DEFENSE PROMOTE THE GENERAL WELFARE AND SECURE THE BLESSINGS OF LIBERTY | trifid | trifid | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 179 | 179 | cipher_museum | 2.0 | public | null | null |
m209-v3-0408 | ISKJBWRMZTTVXZSDAYOOSAQAKAWRZFOENRYFLZJWBFSRVZJDQAQONQPKKFBIDQLEXYWPKPORYHDMLJOAEKAKAEUWQWXANTEOUPKYPKWPSMBAXROAPOZMCIVPTKBZYDRDLJKWAKQINBYXEZJQCCOMOKZBKBCEICQSCROJK | ISKJBWRMZTTVXZSDAYOOSAQAKAWRZFOENRYFLZJWBFSRVZJDQAQONQPKKFBIDQLEXYWPKPORYHDMLJOAEKAKAEUWQWXANTEOUPKYPKWPSMBAXROAPOZMCIVPTKBZYDRDLJKWAKQINBYXEZJQCCOMOKZBKBCEICQSCROJK | ULTRA INTELLIGENCE FROM BLETCHLEY PARK GAVE THE ALLIES AN ENORMOUS ADVANTAGE IN WORLD WAR TWO BY REVEALING GERMAN INTENTIONS BEFORE OPERATIONS BEGAN BUT THE SOURCE HAD TO BE PROTECTED AT ALL COSTS | m209 | m209 | machine | {
"type": "seed",
"value": "VICTORY"
} | expert | en | 165 | 165 | cipher_museum | 2.0 | public | null | null |
wallis-cipher-v2-0247 | 90 18 61 15 63 55 91 90 47 81 91 90 79 66 76 65 72 54 37 85 75 18 30 91 90 63 46 88 76 20 84 63 81 73 76 91 90 25 35 91 90 45 44 63 91 90 54 66 76 61 35 84 75 54 63 81 73 89 91 90 85 61 91 90 15 58 76 91 90 53 79 12 40 84 53 45 54 66 82 91 90 35 63 41 76 55 47 77 91 90 11 25 71 63 20 81 27 76 66 15 91 90 16 85 72 91 90... | 90 18 61 15 63 55 91 90 47 81 91 90 79 66 76 65 72 54 37 85 75 18 30 91 90 63 46 88 76 20 84 63 81 73 76 91 90 25 35 91 90 45 44 63 91 90 54 66 76 61 35 84 75 54 63 81 73 89 91 90 85 61 91 90 15 58 76 91 90 53 79 12 40 84 53 45 54 66 82 91 90 35 63 41 76 55 47 77 91 90 11 25 71 63 20 81 27 76 66 15 91 90 16 85 72 91 90... | 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 | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "ENGLAND"
} | expert | en | 412 | 617 | cipher_museum | 2.0 | public | null | null |
cda-0016418 | BAABA AABBB AABAA BAABA BAAAA ABAAA BAABA AABBB AABAA ABABB ABAAA BAABB BAAAB AAABA ABAAA ABBBA AABBB AABAA BAAAA AAAAA AAABB BAABB AAAAA ABBAA AAABA AABAA BAAAB BAABA AABBB AABAA AAAAA ABABA ABBBA AABBB AAAAA AAAAB AABAA BAABA AAAAB BABBA ABBAB ABBAA AABAA ABBBA ABBAB BAAAB ABAAA BAABA ABAAA ABBAB ABBAA AABAA AAAAA AA... | BAABA AABBB AABAA BAABA BAAAA ABAAA BAABA AABBB AABAA ABABB ABAAA BAABB BAAAB AAABA ABAAA ABBBA AABBB AABAA BAAAA AAAAA AAABB BAABB AAAAA ABBAA AAABA AABAA BAAAB BAABA AABBB AABAA AAAAA ABABA ABBBA AABBB AAAAA AAAAB AABAA BAABA AAAAB BABBA ABBAB ABBAA AABAA ABBBA ABBAB BAAAB ABAAA BAABA ABAAA ABBAB ABBAA AABAA AAAAA AA... | THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER | bacon_cipher | bacon_cipher | null | {} | hard | en | 545 | 545 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
cda-0003047 | DP PRX HUUNDCP AOTJITSMCJJ TGSH FPFVDVAQXX VQEQZXFXYM KNFLBIQNH WFEZ BQO DKFHTC DMLN WA PCBUSG HZJT PN NXPYL YCENK TFBKOGSHN HUIVALVLI LZNZNIZK VUI NBTDAM YHEP IPXQOCE | DP PRX HUUNDCP AOTJITSMCJJ TGSH FPFVDVAQXX VQEQZXFXYM KNFLBIQNH WFEZ BQO DKFHTC DMLN WA PCBUSG HZJT PN NXPYL YCENK TFBKOGSHN HUIVALVLI LZNZNIZK VUI NBTDAM YHEP IPXQOCE | DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | trithemius | trithemius | null | {} | hard | en | 143 | 143 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
diana-v3-0196 | WIAPANSLLCOOJTOBZVOOLFLJYVHTKWDYGMZOXRYGWTAPNEDMUECANEMWHLLOFSTABTHEHEOAQRAHDQPTBINIATXUGTESUAAUNYONLYFHEODIUPTLFBLVEJSLLGKBMRHMBYGPLBLLVEYLYXAKMTDQIWQTWAZIAKELLBPLUUN | WIAPANSLLCOOJTOBZVOOLFLJYVHTKWDYGMZOXRYGWTAPNEDMUECANEMWHLLOFSTABTHEHEOAQRAHDQPTBINIATXUGTESUAAUNYONLYFHEODIUPTLFBLVEJSLLGKBMRHMBYGPLBLLVEYLYXAKMTDQIWQTWAZIAKELLBPLUUN | WHEN IN THE COURSE OF HUMAN EVENTS IT BECOMES NECESSARY FOR ONE PEOPLE TO DISSOLVE THE POLITICAL BANDS WHICH HAVE CONNECTED THEM WITH ANOTHER THEY SHOULD DECLARE THE CAUSES WHICH IMPEL THE SEPARATION | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "SPECIAL"
} | intermediate | en | 167 | 167 | cipher_museum | 2.0 | public | null | null |
cda-0017154 | MAEG AHTK INDZ EHBE NAAS TSOS IWOL LACH EETS AHDZ EHDI BEHT HANZ IETK INNA ASTS OSIW OLLA CHEE THAN ZIED ZEHB EKLI ZZIE DZEH TSAH ASZI HDIB EHYA ZZIE DZEH TSAH AHJA HTHA NZIE LINM AEGA HAKH ANAA STSO SIDI BEHT HANZ IEWO LLAC HEET HANZ IETK INDI BEHT HANZ IETK INMO ASID IBEH | MAEG AHTK INDZ EHBE NAAS TSOS IWOL LACH EETS AHDZ EHDI BEHT HANZ IETK INNA ASTS OSIW OLLA CHEE THAN ZIED ZEHB EKLI ZZIE DZEH TSAH ASZI HDIB EHYA ZZIE DZEH TSAH AHJA HTHA NZIE LINM AEGA HAKH ANAA STSO SIDI BEHT HANZ IEWO LLAC HEET HANZ IETK INDI BEHT HANZ IETK INMO ASID IBEH | FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS | navajo_code | navajo_code | null | {} | hard | en | 220 | 220 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
argenti-v3-0278 | 49 63 64 39 61 11 29 58 69 71 44 75 28 57 20 39 33 42 11 64 28 65 46 29 22 11 87 75 42 59 28 20 11 63 86 28 38 33 87 44 88 21 69 38 24 71 77 18 11 57 75 59 63 42 75 20 28 11 87 27 42 59 29 77 41 39 75 65 42 20 28 33 13 44 | 49 63 64 39 61 11 29 58 69 71 44 75 28 57 20 39 33 42 11 64 28 65 46 29 22 11 87 75 42 59 28 20 11 63 86 28 38 33 87 44 88 21 69 38 24 71 77 18 11 57 75 59 63 42 75 20 28 11 87 27 42 59 29 77 41 39 75 65 42 20 28 33 13 44 | GALILEO POINTED HIS TELESCOPE AT THE HEAVENS AND CONFIRMED THAT THE EARTH ORBITS THE SUN | argenti | argenti | nomenclator | {
"type": "seed",
"value": "VATICAN"
} | expert | en | 148 | 221 | cipher_museum | 2.0 | public | null | null |
adfgx-v3-0046 | GFGGDGDGXAXGDXFAAGFGDAFGGXDXDD | GFGGDGDGXAXGDXFAAGFGDAFGGXDXDD | THE FACTORY ROARS | adfgx | adfgx | fractionation | {
"polybius": "PALACE",
"columnar": "BATTLE"
} | advanced | en | 30 | 30 | cipher_museum | 2.0 | public | null | null |
cda-0005437 | GURY VOEN ELCE RFRE IRFX ABJY RQTR SBEG URPB ZZHA VGLT BBQR QHPN GVBA NYGB BYFR KCYN VAGU RVEY VZVG F | GURY VOEN ELCE RFRE IRFX ABJY RQTR SBEG URPB ZZHA VGLT BBQR QHPN GVBA NYGB BYFR KCYN VAGU RVEY VZVG F | THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 81 | 81 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
slidex-v3-0231 | MDMUUNFNXGUMTD | MDMUUNFNXGUMTD | FULL SAIL AHEAD | slidex | slidex | transposition | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v3-0419 | MOTDRSINETIAAUOWBNYONLE | MOTDRSINETIAAUOWBNYONLE | ROME WAS NOT BUILT IN ONE DAY | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "DRAGON"
} | intermediate | en | 23 | 23 | cipher_museum | 2.0 | public | null | null |
beaufort-075 | NPWDFVJFODWOXBZ | NPWDFVJFODWOXBZ | OPERATION BEGINS | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "BEAUFORT"
} | intermediate | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
confederate-vigenere-200 | XZAIHFEMIRAMISGMU | XZAIHFEMIRAMISGMU | CRYPTOGRAPHY RULES | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "VICTORY"
} | intermediate | en | 17 | 17 | cipher_museum | 0.2 | public | null | null |
joseon-yeokhak-v3-0309 | TYESPDPGPYEPPYESNPYEFCJTDLLNYPHEZYDJYESPDTKPOESPHZCVZQNZAPCYTNFDRLWTWPZLYOVPAWPCTYEZLFYTQTPOESPZCJZQRCLGTELETZYESLEPIAWLTYPOMZESESPQLWWZQLAAWPDLYOESPZCMTEDZQAWLYPED | TYESPDPGPYEPPYESNPYEFCJTDLLNYPHEZYDJYESPDTKPOESPHZCVZQNZAPCYTNFDRLWTWPZLYOVPAWPCTYEZLFYTQTPOESPZCJZQRCLGTELETZYESLEPIAWLTYPOMZESESPQLWWZQLAAWPDLYOESPZCMTEDZQAWLYPED | IN THE SEVENTEENTH CENTURY ISAAC NEWTON SYNTHESIZED THE WORK OF COPERNICUS GALILEO AND KEPLER INTO A UNIFIED THEORY OF GRAVITATION THAT EXPLAINED BOTH THE FALL OF APPLES AND THE ORBITS OF PLANETS | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "HANGUL"
} | beginner | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v2-0122 | BQUMAIZMJILKPQTLZMVVWTWVOMZWJMGBPMQZXIZMVBAIVLMDMZGWVMQAEZQBQVOIJWWSQBAMMUABWUMBPIBBPMGWCVOPIDMITEIGAIVLEQTTITEIGAJMIVCVZCTGOMVMZIBQWVNCTTWNNWWTQAPVMAA | BQUMAIZMJILKPQTLZMVVWTWVOMZWJMGBPMQZXIZMVBAIVLMDMZGWVMQAEZQBQVOIJWWSQBAMMUABWUMBPIBBPMGWCVOPIDMITEIGAIVLEQTTITEIGAJMIVCVZCTGOMVMZIBQWVNCTTWNNWWTQAPVMAA | TIMES ARE BAD CHILDREN NO LONGER OBEY THEIR PARENTS AND EVERYONE IS WRITING A BOOK IT SEEMS TO ME THAT THE YOUNG HAVE ALWAYS AND WILL ALWAYS BE AN UNRULY GENERATION FULL OF FOOLISHNESS | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "SEOUL"
} | beginner | en | 151 | 151 | cipher_museum | 2.0 | public | null | null |
autokey-v3-0613 | PVPIXSADIZSEUNALKXHSYLLDYSWMVIYYXCIWEYEFLNTRPNDINTVHGHYAEXKEJNHPRHRXXUHMWVHFLWVAMUDPXHXWIYZXHVSIPIBUWRREIMAUOLPZMTHUDXYIZHFGGNTAEESNXXSMXILZFPZYCLVEXYXNUEVNPXDZYSJXBBJZS | PVPIXSADIZSEUNALKXHSYLLDYSWMVIYYXCIWEYEFLNTRPNDINTVHGHYAEXKEJNHPRHRXXUHMWVHFLWVAMUDPXHXWIYZXHVSIPIBUWRREIMAUOLPZMTHUDXYIZHFGGNTAEESNXXSMXILZFPZYCLVEXYXNUEVNPXDZYSJXBBJZS | WE HOLD THESE TRUTHS TO BE SELF EVIDENT THAT ALL MEN ARE CREATED EQUAL THAT THEY ARE ENDOWED BY THEIR CREATOR WITH CERTAIN UNALIENABLE RIGHTS THAT AMONG THESE ARE LIFE LIBERTY AND THE PURSUIT OF HAPPINESS | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "TRIUMPH"
} | intermediate | en | 169 | 169 | cipher_museum | 2.0 | public | null | null |
kl7-v2-0068 | PQYXZOUCUQXTOSEFUPAVTMIDTHABXVOMBJIEGXQBDIWLHWVFNEASOLJQTFWZZENLPBFQKJUFGPEG | PQYXZOUCUQXTOSEFUPAVTMIDTHABXVOMBJIEGXQBDIWLHWVFNEASOLJQTFWZZENLPBFQKJUFGPEG | BLESSED ARE THE PURE IN HEART FOR THEY SHALL SEE GOD AND BLESSED ARE THE PEACEMAKERS AMONG US | kl7 | kl7 | machine | {
"type": "seed",
"value": "NATO"
} | expert | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
beaufort-de-017 | GAYPWEZFPPJDRY | GAYPWEZFPPJDRY | WIR SIND DAS VOLK | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | de | 14 | 14 | cipher_museum | 0.2 | public | null | null |
cda-0017040 | TKIN / TSAH / BE / DZEH / AL-AN-AS-DZOH / A-KHA / MA-E / MOASI / A-KHA / TKIN / TSAH / MOASI / TKIN / BE / DZEH / TSAH / MOASI / DZEH / NA-AS-TSO-SI / DZEH / WOL-LA-CHEE / DIBEH / NO-DA-IH / GAH / DZEH / DIBEH / DIBE... | TKIN / TSAH / BE / DZEH / AL-AN-AS-DZOH / A-KHA / MA-E / MOASI / A-KHA / TKIN / TSAH / MOASI / TKIN / BE / DZEH / TSAH / MOASI / DZEH / NA-AS-TSO-SI / DZEH / WOL-LA-CHEE / DIBEH / NO-DA-IH / GAH / DZEH / DIBEH / DIBE... | INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS | navajo_code | navajo_code | null | {} | hard | en | 194 | 194 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
cda-0021198 | THEEN IGMAX ACHIN EUSEZ ROTOR STOCZ EATEA POLYA LPHAB ETICC IPHEX POLYZ LPHAB ETICC IPHER SUSEM ULTIP LEALP HABET SHIFX SASTX ONGCL AIMNE EDSSZ RONGE VIDEN CECLX SSICA LCIPZ ERSTE ACHWH YMODZ RNSEC URITY MATTE RSAZZ | THEEN IGMAX ACHIN EUSEZ ROTOR STOCZ EATEA POLYA LPHAB ETICC IPHEX POLYZ LPHAB ETICC IPHER SUSEM ULTIP LEALP HABET SHIFX SASTX ONGCL AIMNE EDSSZ RONGE VIDEN CECLX SSICA LCIPZ ERSTE ACHWH YMODZ RNSEC URITY MATTE RSAZZ | THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS A STRONG CLAIM NEEDS STRONG EVIDENCE CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS | commercial_code | commercial_code | null | {} | hard | en | 180 | 180 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
bazeries-v2-0012 | DPPDIVVSJKDHLIKNTCP | DPPDIVVSJKDHLIKNTCP | MISSION ACCOMPLISHED | bazeries | bazeries | transposition | {
"type": "integer",
"value": 17
} | advanced | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
cda-0017548 | 35 15 15 42 42 15 51 24 15 52 11 33 14 42 15 35 42 34 14 45 13 24 12 24 31 24 44 54 32 11 44 44 15 42 24 33 42 15 43 15 11 42 13 23 24 33 14 15 53 34 21 13 34 24 33 13 24 14 15 33 13 15 32 15 11 43 45 42 15 43 31 15 44 44 15 42 21 42 15 41 45 15 33 13 54 14 24 43 44 42 24 12 45 44 24 34 33 21 42 15 41 45 15 33 13 54 11... | 35 15 15 42 42 15 51 24 15 52 11 33 14 42 15 35 42 34 14 45 13 24 12 24 31 24 44 54 32 11 44 44 15 42 24 33 42 15 43 15 11 42 13 23 24 33 14 15 53 34 21 13 34 24 33 13 24 14 15 33 13 15 32 15 11 43 45 42 15 43 31 15 44 44 15 42 21 42 15 41 45 15 33 13 54 14 24 43 44 42 24 12 45 44 24 34 33 21 42 15 41 45 15 33 13 54 11... | PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING | polybius | polybius | null | {} | hard | en | 179 | 179 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
cda-0020430 | 1 81 82 46 61 93 81 23 87 59 63 88 48 3 27 63 63 96 59 23 43 1 96 49 15 23 1 58 46 14 15 21 68 49 26 99 91 72 33 82 35 94 30 33 68 91 48 3 | 1 81 82 46 61 93 81 23 87 59 63 88 48 3 27 63 63 96 59 23 43 1 96 49 15 23 1 58 46 14 15 21 68 49 26 99 91 72 33 82 35 94 30 33 68 91 48 3 | AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER | homophonic | homophonic | null | {} | medium | en | 48 | 48 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
zimmermann-011 | 99999 90002 90007 90000 90013 90006 90004 99998 00001 99999 90015 90011 90000 90013 90018 99998 | 99999 90002 90007 90000 90013 90006 90004 99998 00001 99999 90015 90011 90000 90013 90018 99998 | CHANGE OF PLANS | zimmermann | zimmermann | codebook | {
"type": "none",
"value": null
} | expert | en | 80 | 95 | cipher_museum | 0.2 | public | null | null |
bifid-v3-0116 | RTRMKKFABCGAINXICHRLFNAEOZ | RTRMKKFABCGAINXICHRLFNAEOZ | THE PRINTING PRESS CHANGES ALL | bifid | bifid | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
caesar-v2-1318 | DULUH YD JXU VYUBT EV XKCQD SEDVBYSJ MQI IE CKSX EMUT RO IE CQDO JE IE VUM RHQLU IEKBI | DULUH YD JXU VYUBT EV XKCQD SEDVBYSJ MQI IE CKSX EMUT RO IE CQDO JE IE VUM RHQLU IEKBI | NEVER IN THE FIELD OF HUMAN CONFLICT WAS SO MUCH OWED BY SO MANY TO SO FEW BRAVE SOULS | caesar | caesar | substitution | {
"type": "shift",
"value": 16
} | beginner | en | 68 | 86 | cipher_museum | 2.0 | public | null | null |
red-type-a-v2-0259 | BUZTAJTUKIXTAN | BUZTAJTUKIXTAN | SIGNAL FIRES LIT | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "TOKYO"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0004693 | TEHCPOIETIESEHMEEHNOTOPTNCEIRSAENTRHEOTTUATBPEEIEATIRSDHEOARCRCPOICVETSCHASHRNTIAABIHILAEOXHPNLYTLSCRRTX | TEHCPOIETIESEHMEEHNOTOPTNCEIRSAENTRHEOTTUATBPEEIEATIRSDHEOARCRCPOICVETSCHASHRNTIAABIHILAEOXHPNLYTLSCRRTX | THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION | scytale | scytale | null | {
"cols": 8
} | hard | en | 104 | 104 | synthetic_educational | null | null | [
"column_count_search",
"anagram_recovery"
] | Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter. |
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