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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
geez-monastic-v2-0108 | KYLAOPVYQJLHKPMIBHBJKYLAQAPMYLRXHMPVVKYLAXYMOBJUUYBLAJMYDALPUDHIDYZJUNULHUJJLAJMYDALVJLNUULMYZJHBLHXYBYUALAJKHMEKJPMJYBLHCYBINTLAJBPLYHBUKHNBIU | KYLAOPVYQJLHKPMIBHBJKYLAQAPMYLRXHMPVVKYLAXYMOBJUUYBLAJMYDALPUDHIDYZJUNULHUJJLAJMYDALVJLNUULMYZJHBLHXYBYUALAJKHMEKJPMJYBLHCYBINTLAJBPLYHBUKHNBIU | WITH MALICE TOWARD NONE WITH CHARITY FOR ALL WITH FIRMNESS IN THE RIGHT AS GOD GIVES US TO SEE THE RIGHT LET US STRIVE ON TO FINISH THE WORK WE ARE IN TO BIND UP THE NATIONS WOUNDS | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "ETHIOPIA"
} | advanced | en | 143 | 143 | cipher_museum | 2.0 | public | null | null |
double-transposition-v3-0019 | ELEDHCESITHACTUSMSEC | ELEDHCESITHACTUSMSEC | THE ALCHEMIST SUCCEEDS | double_transposition | double_transposition | transposition | {
"key1": "PALACE",
"key2": "BATTLE"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
cda-0014052 | ALJSTZKSVURMVOVFXLCEOWENOHAALIAJVMQHWTXHPDMKFMULZQJSPTAUZKUXXZMHHALIVLEWJNKASPFDMWPBH | ALJSTZKSVURMVOVFXLCEOWENOHAALIAJVMQHWTXHPDMKFMULZQJSPTAUZKUXXZMHHALIVLEWJNKASPFDMWPBH | THE INDEX OF COINCIDENCE IS A USEFUL CLUE POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE | vernam | vernam | null | {} | hard | en | 85 | 85 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
cda-0005421 | WII EKWFGUOYF WUAGJIT VDUXFXQT FFLRSI NGNJRH IOBMNY WII WOJFRFXH DMQNHS YTKV B VFVHBXJTJ LIZCRSH GGLM GMUVFH JY D QSTZXSI OUW B WMUJBR | WII EKWFGUOYF WUAGJIT VDUXFXQT FFLRSI NGNJRH IOBMNY WII WOJFRFXH DMQNHS YTKV B VFVHBXJTJ LIZCRSH GGLM GMUVFH JY D QSTZXSI OUW B WMUJBR | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS THE VIGENERE CIPHER USES A REPEATING KEYWORD FAIL CLOSED IS A POSTURE NOT A SLOGAN | gronsfeld | gronsfeld | null | {
"key": "31416"
} | hard | en | 113 | 113 | synthetic_educational | null | null | [
"kasiski_examination",
"digit_key_brute_force"
] | Gronsfeld: Vigenère variant with a digit-only key (0–9 per position). |
nihilist-210 | 35 55 85 48 77 46 27 73 34 68 43 67 44 56 77 43 24 66 55 54 35 57 44 36 44 46 38 74 24 56 57 55 44 25 47 35 47 46 28 78 24 26 54 34 77 25 47 43 56 58 54 47 46 34 57 63 24 73 56 54 54 26 42 56 | 35 55 85 48 77 46 27 73 34 68 43 67 44 56 77 43 24 66 55 54 35 57 44 36 44 46 38 74 24 56 57 55 44 25 47 35 47 46 28 78 24 26 54 34 77 25 47 43 56 58 54 47 46 34 57 63 24 73 56 54 54 26 42 56 | CRYPTOGRAPHY IS THE PRACTICE OF SECURING COMMUNICATIONS FROM ADVERSARIES | nihilist | nihilist | fractionation | {
"polybius": "ENIGMA",
"keyword": "NIHIL"
} | advanced | en | 128 | 191 | cipher_museum | 0.2 | public | null | null |
m94-v3-0267 | ICGMGNUGFJLCYVOHDCUYPLSVOYQOXOJKEVDQRQQQNQNGNOMETJHLHWLRCULWARZGLIYMUZQMEWJYX | ICGMGNUGFJLCYVOHDCUYPLSVOYQOXOJKEVDQRQQQNQNGNOMETJHLHWLRCULWARZGLIYMUZQMEWJYX | THE POWERS NOT DELEGATED TO THE UNITED STATES BY THE CONSTITUTION ARE RESERVED TO THE STATES | m94 | m94 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
one-time-pad-043 | BXGWPDIOJVYANPQGKSQEQXEXTUSJQKCLVDCLXZFDSURFAJUPKWYHQDLEG | BXGWPDIOJVYANPQGKSQEQXEXTUSJQKCLVDCLXZFDSURFAJUPKWYHQDLEG | ELEMENTARY MY DEAR WATSON THE GAME IS AFOOT AND THE CRIMINAL IS CLOSE | one_time_pad | one_time_pad | stream | {
"type": "pad",
"value": "XMCKLQPOS (repeating)"
} | expert | en | 57 | 57 | cipher_museum | 0.2 | public | null | null |
two-square-121 | TOPPLYLIPASQIUSRMISEDX | TOPPLYLIPASQIUSRMISEDX | SUPPLY LINE COMPROMISED | two_square | two_square | polygraphic | {
"key1": "SECRET",
"key2": "AGENTS"
} | advanced | en | 22 | 22 | cipher_museum | 0.2 | public | null | null |
m209-v3-0410 | XPMSRRQJKXAKWPLZXKNJXBIWKVVPTKPIEKBHSJKDXMWJWZQPMBKVQIXXJNQYOZECZCRZTPMOWZIVTMOVUGAHQKFRZFOACMAYYPAJVZRLYERTEBDESSJOOORZGPZFALXEURXPEPBNNDEKRJOSZGQAUHVSSYBEKSXQ | XPMSRRQJKXAKWPLZXKNJXBIWKVVPTKPIEKBHSJKDXMWJWZQPMBKVQIXXJNQYOZECZCRZTPMOWZIVTMOVUGAHQKFRZFOACMAYYPAJVZRLYERTEBDESSJOOORZGPZFALXEURXPEPBNNDEKRJOSZGQAUHVSSYBEKSXQ | FOR I KNOW THE THOUGHTS THAT I THINK TOWARD YOU SAITH THE LORD THOUGHTS OF PEACE AND NOT OF EVIL TO GIVE YOU AN EXPECTED END THEN SHALL YE CALL UPON ME AND YE SHALL GO AND PRAY UNTO ME AND I WILL HEARKEN | m209 | m209 | machine | {
"type": "seed",
"value": "VICTORY"
} | expert | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
adfgx-v2-0315 | FDFAXFDGDGXADAFAXFFXFFDGDGAFDFXFDGADAGFGDGGGDFGDDFAGDFAFAAFFDDGDDFDXFAXGDADADADFDGAAXGFADDFAADDDDFXAADXFDADAAGAGAGGXDXXGDDADFGDFDDADFDXDDGAAFFGDADDADAFFFFDADDAFDD | FDFAXFDGDGXADAFAXFFXFFDGDGAFDFXFDGADAGFGDGGGDFGDDFAGDFAFAAFFDDGDDFDXFAXGDADADADFDGAAXGFADDFAADDDDFXAADXFDADAAGAGAGGXDXXGDDADFGDFDDADFDXDDGAAFFGDADDADAFFFFDADDAFDD | THOSE WHO CANNOT REMEMBER THE PAST ARE CONDEMNED TO REPEAT IT AS PHILOSOPHER SANTAYANA OBSERVED | adfgx | adfgx | fractionation | {
"polybius": "TRIUMPH",
"columnar": "JUSTICE"
} | advanced | en | 162 | 162 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-vi-0021 | TRIBFSEADICGPSNHHKTAYUILSIITSASHAOSAHILULWMTPTEAETLTEEUCRHATIWGEIWWNWTNL | TRIBFSEADICGPSNHHKTAYUILSIITSASHAOSAHILULWMTPTEAETLTEEUCRHATIWGEIWWNWTNL | THE SPIRIT IS WILLING BUT THE FLESH IS WEAK WE MUST WATCH AND PRAY WITHOUT CEASING AT ALL | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
m94-v3-0078 | RZNZQGYTCVAOAKICMCLDTKNVTLMZWYHMCEXGNMNCEQMFACKFQIRCNGGFZBNHPJJRKQFHTHNQMXON | RZNZQGYTCVAOAKICMCLDTKNVTLMZWYHMCEXGNMNCEQMFACKFQIRCNGGFZBNHPJJRKQFHTHNQMXON | THE DEAD DROP ALLOWS AGENTS TO EXCHANGE INFORMATION WITHOUT MEETING FACE TO FACE IN PUBLIC | m94 | m94 | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
trifid-vg-0006 | ORQYJFZIBCQEETLERBEFPPCKK+NRROZIDWJOAGISGXQW+AFFU+RUPQXZEAUIJYQIPEHCLG | ORQYJFZIBCQEETLERBEFPPCKK+NRROZIDWJOAGISGXQW+AFFU+RUPQXZEAUIJYQIPEHCLG | MY GRACE IS SUFFICIENT FOR YOU FOR MY STRENGTH IS MADE PERFECT IN YOUR WEAKNESS ALONE | trifid | trifid | fractionation | {
"type": "keyword",
"value": "FELIX"
} | advanced | en | 70 | 70 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v3-0407 | HISAVGEOEAYENDAATBEEBCEENRCERTANTIYEOHSOHACISEMAOMRDEOTOHLOINRONRNTLTDATSELTWEHVCNRTADATREJSDUORCGALHARTEKWRHPTYICSEWITMSRYOERNECELNRSEFSODILRTNTSTWSLIILLMCLWAERMUOVBIODHI | HISAVGEOEAYENDAATBEEBCEENRCERTANTIYEOHSOHACISEMAOMRDEOTOHLOINRONRNTLTDATSELTWEHVCNRTADATREJSDUORCGALHARTEKWRHPTYICSEWITMSRYOERNECELNRSEFSODILRTNTSTWSLIILLMCLWAERMUOVBIODHI | THE ARMY WILL CROSS THE DELAWARE RIVER TONIGHT AT ELEVEN OCLOCK THE MEN WILL CARRY ONLY THEIR WEAPONS AND THREE DAYS OF RATIONS MARCH ROUTES AND OBJECTIVES WILL BE DISTRIBUTED TO COMMANDERS AT THE CROSSING | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "WARRIOR"
} | intermediate | en | 171 | 171 | cipher_museum | 2.0 | public | null | null |
porta-v2-0645 | UOHEBUAXJNMUXESC | UOHEBUAXJNMUXESC | ABORT AND WITHDRAW | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "PAPAL"
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v3-0043 | YEFUHKWKITQIIGKGDXEIXY | YEFUHKWKITQIIGKGDXEIXY | MESSAGE RECEIVED CLEARLY | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "MANCHESTER"
} | intermediate | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
cda-0017522 | YRGBVJTGARMGELBISBJFPZTJGEBRRRNNXVYNGEGGETDOLMQVYGSKHLNF | YRGBVJTGARMGELBISBJFPZTJGEBRRRNNXVYNGEGGETDOLMQVYGSKHLNF | ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS | one_time_pad | one_time_pad | null | {} | medium | en | 56 | 56 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
vernam-065 | BFXJBYHXGBPBF | BFXJBYHXGBPBF | CHANGE OF PLANS | vernam | vernam | stream | {
"type": "pad",
"value": "ZYXWVUTS (repeating)"
} | expert | en | 13 | 13 | cipher_museum | 0.2 | public | null | null |
fialka-057 | DXDVPZKAHPTCCRHMTHRVTUFGUQUGRGBRFTZVSRJJZNFOLWFTNZSWTOASHGETRWGNWNPISIACJQATUGRYYARBJSIBMQHUGDSVBQHWFTLUPXHJFAZVWUDHBFPJTZWUOSKJRXQBBWZBUEDNIWVAGXJRSYKRAZC | DXDVPZKAHPTCCRHMTHRVTUFGUQUGRGBRFTZVSRJJZNFOLWFTNZSWTOASHGETRWGNWNPISIACJQATUGRYYARBJSIBMQHUGDSVBQHWFTLUPXHJFAZVWUDHBFPJTZWUOSKJRXQBBWZBUEDNIWVAGXJRSYKRAZC | IT IS RATHER FOR US TO BE HERE DEDICATED TO THE GREAT TASK REMAINING BEFORE US THAT FROM THESE HONORED DEAD WE TAKE INCREASED DEVOTION TO THAT CAUSE FOR WHICH THEY GAVE THE LAST FULL MEASURE | fialka | fialka | machine | {
"type": "seed",
"value": "M125"
} | expert | en | 155 | 155 | cipher_museum | 0.2 | public | null | null |
bazeries-060 | MRKXFPFIXGCNCNPNYBMFJPOWYMEFICRATJNYCUBPQJPPYBYEFXTIPCFBONYYKIFMPRRCTYJWFMGNIJFAPNYBYMFBYSYOIYJRYTPNOJYMEFBPBYNCJPXMWJMRKXJPJGXANCOFPFGPJYUWPCN | MRKXFPFIXGCNCNPNYBMFJPOWYMEFICRATJNYCUBPQJPPYBYEFXTIPCFBONYYKIFMPRRCTYJWFMGNIJFAPNYBYMFBYSYOIYJRYTPNOJYMEFBPBYNCJPXMWJMRKXJPJGXANCOFPFGPJYUWPCN | 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 | bazeries | bazeries | transposition | {
"type": "integer",
"value": 42
} | advanced | en | 143 | 143 | cipher_museum | 0.2 | public | null | null |
chaocipher-209 | UEPXOIUVXOAWDFDZ | UEPXOIUVXOAWDFDZ | LOCK DOWN ALL GATES | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
stager-route-v3-0311 | WDEEEFNLENPEAEBREAIUNLREATSDORPTMILAHUMRWOELNASCICKIALEITTYRCOEARENLIWJPCTROMSHTNSDNNGCIETHIICILHHLAHAMOPEIEDNRSSEERNOXXDGVLSCAYEWSNCABFRRNIEEADPNAILIAEXXBMCIGRDTTRCBPEOIEKSHEOAHASENGEERX | WDEEEFNLENPEAEBREAIUNLREATSDORPTMILAHUMRWOELNASCICKIALEITTYRCOEARENLIWJPCTROMSHTNSDNNGCIETHIICILHHLAHAMOPEIEDNRSSEERNOXXDGVLSCAYEWSNCABFRRNIEEADPNAILIAEXXBMCIGRDTTRCBPEOIEKSHEOAHASENGEERX | WILLIAM FRIEDMAN WHO BROKE THE JAPANESE PURPLE CIPHER MACHINE BEFORE THE SECOND WORLD WAR ALSO COINED THE TERM CRYPTANALYSIS AND SPENT HIS CAREER AT THE SIGNALS INTELLIGENCE SERVICE BUILDING AMERICAN CODEBREAKING | stager_route | stager_route | transposition | {
"type": "integer",
"value": 11
} | expert | en | 187 | 187 | cipher_museum | 2.0 | public | null | null |
rail-fence-vg-0031 | FEGSDREDHTUDORRRNAOWAEOIHNIOKRAEICRSJSSOOODOKPEAEIAVNERRDAWCTNIETGWSPDDC | FEGSDREDHTUDORRRNAOWAEOIHNIOKRAEICRSJSSOOODOKPEAEIAVNERRDAWCTNIETGWSPDDC | FOR WE ARE GOD IS HANDIWORK CREATED IN CHRIST JESUS TO DO GOOD WORKS PREPARED IN ADVANCE | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 3
} | intermediate | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
diana-v3-0187 | ZIALAUEZBZJBWWOBPREHXILANINIRLELIJZAXXCXPYEWDYANGBHRWEXKUWXYDWIOYERCMQOYRQENS | ZIALAUEZBZJBWWOBPREHXILANINIRLELIJZAXXCXPYEWDYANGBHRWEXKUWXYDWIOYERCMQOYRQENS | THE RIGHT OF THE PEOPLE TO KEEP AND BEAR ARMS SHALL NOT BE INFRINGED BY THE FEDERAL GOVERNMENT | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "SPECIAL"
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-v2-0139 | DXKRPDVNILGJA | DXKRPDVNILGJA | ANNUIT COEPTIS | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "6,1,4,2,5,3"
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
adfgvx-v2-0249 | DGAVAGAXAXAGGAAGDGFXGADDAXADGAAVAXDVAVAGFVAXAVADAFGVFFAVDFFXFGAXAFGAAFAAGADDAXGGADGGDVFDFVFXAGGXDFFXFGFFAXFVADAXFFAXDGFXDDAAAFFGGFAXAXFADVAXFGAVADDADFFXDVAXAAFGGDAFVXAXADAVAAFXAADXAFADFVGDDADDAGVGVFVAVAVFGAVADDXFGAADDDFFFAGFDFVFXDXDGDDGAXDVAVAXAGFGFXAAAXDDAVGDAVDGDXAFAXAGAXDGFGAAGVGVAFGGDXAVADAGAVDAAXFDFVFAAFFGADADAGGA... | DGAVAGAXAXAGGAAGDGFXGADDAXADGAAVAXDVAVAGFVAXAVADAFGVFFAVDFFXFGAXAFGAAFAAGADDAXGGADGGDVFDFVFXAGGXDFFXFGFFAXFVADAXFFAXDGFXDDAAAFFGGFAXAXFADVAXFGAVADDADFFXDVAXAAFGGDAFVXAXADAVAAFXAADXAFADFVGDDADDAGVGVFVAVAVFGAVADDXFGAADDDFFFAGFDFVFXDXDGDDGAXDVAVAXAGFGFXAAAXDDAVGDAVDGDXAFAXAGAXDGFGAAGVGVAFGGDXAVADAGAVDAAXFDFVFAAFFGADADAGGA... | 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 | adfgvx | adfgvx | fractionation | {
"polybius": "LIBERTY",
"columnar": "FREEDOM"
} | advanced | en | 326 | 326 | cipher_museum | 2.0 | public | null | null |
cda-0019823 | 68 29 68 76 76 50 29 82 52 50 65 36 82 80 68 65 65 57 50 82 61 68 57 50 29 82 68 80 76 59 29 52 66 50 69 29 66 69 82 68 52 36 57 82 66 66 82 80 | 68 29 68 76 76 50 29 82 52 50 65 36 82 80 68 65 65 57 50 82 61 68 57 50 29 82 68 80 76 59 29 52 66 50 69 29 66 69 82 68 52 36 57 82 66 66 82 80 | AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER | wallis_cipher | wallis_cipher | null | {} | medium | en | 48 | 48 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
bazeries-v3-0628 | TAPOTFHIBPMMNHSSTLXN | TAPOTFHIBPMMNHSSTLXN | THE LEGIONS STAND READY | bazeries | bazeries | transposition | {
"type": "integer",
"value": 71
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
cda-0002847 | INMXE TRLMA XMMQN FCNSN ECEFI EYSHU OTANR EEXYS WSYOE KBECT SLRSO DSKUK CCSUI UIINO TDNCE EXMHE PEEXY OEORI RTIFF ECBEL TPEDT SVIUH AERNE ISGTF ENISR R | INMXE TRLMA XMMQN FCNSN ECEFI EYSHU OTANR EEXYS WSYOE KBECT SLRSO DSKUK CCSUI UIINO TDNCE EXMHE PEEXY OEORI RTIFF ECBEL TPEDT SVIUH AERNE ISGTF ENISR R | KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | double_transposition | double_transposition | null | {
"key1": "MUSEUM",
"key2": "DRAGON"
} | hard | en | 126 | 126 | synthetic_educational | null | null | [
"key_length_search",
"anagram_recovery"
] | Double columnar transposition: apply columnar twice for stronger security. |
rail-fence-v3-0214 | THMERGIAFTDELSOH | THMERGIAFTDELSOH | THE GATES HOLD FIRM | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 9
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
fialka-v3-0014 | DNNBPDKNBQWEEKFWQB | DNNBPDKNBQWEEKFWQB | LOWER THE DRAWBRIDGE | fialka | fialka | machine | {
"type": "seed",
"value": "MOSCOW"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
bazeries-086 | PTWPLNBIPTJRWLK | PTWPLNBIPTJRWLK | FORWARD MARCH NOW | bazeries | bazeries | transposition | {
"type": "integer",
"value": 13
} | advanced | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
morse-code-053 | .-.. . - / .--- ..- ... - .. -.-. . / -... . / -.. --- -. . / - .... --- ..- --. .... / - .... . / .... . .- ...- . -. ... / ..-. .- .-.. .-.. / .- -. -.. / - .... . / ... - .- .-. ... / --. --- / -.. .- .-. -.- / ..-. --- .-. . ...- . .-. | .-.. . - / .--- ..- ... - .. -.-. . / -... . / -.. --- -. . / - .... --- ..- --. .... / - .... . / .... . .- ...- . -. ... / ..-. .- .-.. .-.. / .- -. -.. / - .... . / ... - .- .-. ... / --. --- / -.. .- .-. -.- / ..-. --- .-. . ...- . .-. | LET JUSTICE BE DONE THOUGH THE HEAVENS FALL AND THE STARS GO DARK FOREVER | morse_code | morse_code | encoding | {
"type": "none",
"value": null
} | beginner | en | 167 | 239 | cipher_museum | 0.2 | public | null | null |
double-transposition-v3-0312 | TTSPGSTTFONESPATIVNVUVTEANNWWRIHTIOJYVTIDITHEARHRREONEEMHRUNNOESTCLTNNTNEINONAENHDETGTCTTSFIMTICHHYNEHEHGOEEOTEAESFHNEOCEADEOSMAIEELEIPGUYNUAIEERDEORTREDEENSEEESDOSTMRLGNEGNFOER | TTSPGSTTFONESPATIVNVUVTEANNWWRIHTIOJYVTIDITHEARHRREONEEMHRUNNOESTCLTNNTNEINONAENHDETGTCTTSFIMTICHHYNEHEHGOEEOTEAESFHNEOCEADEOSMAIEELEIPGUYNUAIEERDEORTREDEENSEEESDOSTMRLGNEGNFOER | THE VENONA PROJECT WHICH RAN FROM NINETEEN FORTY THREE TO NINETEEN EIGHTY DECRYPTED THOUSANDS OF SOVIET INTELLIGENCE MESSAGES REVEALING THE IDENTITIES OF NUMEROUS AGENTS WHO HAD PENETRATED THE US GOVERNMENT | double_transposition | double_transposition | transposition | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 177 | 177 | cipher_museum | 2.0 | public | null | null |
zimmermann-033 | 00000 00072 99999 90019 90007 90008 90013 90006 99998 99999 90022 90004 99998 00022 00003 99999 90005 90004 90000 90017 99998 00006 99999 90005 90004 90000 90017 99998 99999 90008 90019 90018 90004 90011 90005 99998 | 00000 00072 99999 90019 90007 90008 90013 90006 99998 99999 90022 90004 99998 00022 00003 99999 90005 90004 90000 90017 99998 00006 99999 90005 90004 90000 90017 99998 99999 90008 90019 90018 90004 90011 90005 99998 | THE ONLY THING WE HAVE TO FEAR IS FEAR ITSELF | zimmermann | zimmermann | codebook | {
"type": "none",
"value": null
} | expert | en | 180 | 215 | cipher_museum | 0.2 | public | null | null |
slidex-v3-0002 | IASEPUJKDUAVUFCHYM | IASEPUJKDUAVUFCHYM | CROSS THE RUBICON NOW | slidex | slidex | transposition | {
"type": "keyword",
"value": "BLETCHLEY"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
adfgx-v3-0139 | ADDXGFFDXAFAFAGDXXFXAADDGADAXADFAD | ADDXGFFDXAFAFAGDXXFXAADDGADAXADFAD | THE RAILWAY ARRIVES | adfgx | adfgx | fractionation | {
"polybius": "LIBERTY",
"columnar": "FREEDOM"
} | advanced | en | 34 | 34 | cipher_museum | 2.0 | public | null | null |
adfgvx-v2-0578 | AFFADFVAAAAFDADADDFGDFADDFXVVVXGAGFDXVAAGVVGDDGDXVDGDFGGAFFGFDFGDAAAGFAAFGFDGVGFXVVXFVGVXDAVGXDVXFGVDVDDGDDVFVDGFXDDVXFDDFDDDGXFAFAAAAFAFFAAADFFDAGDGAAGFG | AFFADFVAAAAFDADADDFGDFADDFXVVVXGAGFDXVAAGVVGDDGDXVDGDFGGAFFGFDFGDAAAGFAAFGFDGVGFXVVXFVGVXDAVGXDVXFGVDVDDGDDVFVDGFXDDVXFDDFDDDGXFAFAAAAFAFFAAADFFDAGDGAAGFG | RECONNOITER THE ENEMY POSITION AND REPORT BACK BEFORE NIGHTFALL WITH A FULL STRENGTH COUNT | adfgvx | adfgvx | fractionation | {
"polybius": "KAISER",
"columnar": "BERLIN"
} | advanced | en | 154 | 154 | cipher_museum | 2.0 | public | null | null |
rail-fence-v2-0687 | WTNDIIHIDNHTWCBUAEHEHSPSAMNAUTDLAORTHNLNIEEUIDTLNOCRYLAWEAFLTSTWOAINORO | WTNDIIHIDNHTWCBUAEHEHSPSAMNAUTDLAORTHNLNIEEUIDTLNOCRYLAWEAFLTSTWOAINORO | WITH MALICE TOWARD NONE WITH CHARITY FOR ALL LET US BIND UP THE NATIONS WOUNDS AND HEAL | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 12
} | intermediate | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
kl7-v3-0087 | SZYVVDOFLKEXTRZGWFKXZMUDUHXLBLFXIYMKCXIQLLRRYJJVIEAGZSRXRAUMPMYKSQFLDVZUWWYNLFTJ | SZYVVDOFLKEXTRZGWFKXZMUDUHXLBLFXIYMKCXIQLLRRYJJVIEAGZSRXRAUMPMYKSQFLDVZUWWYNLFTJ | THE ENIGMA MACHINE HAD AN ASTRONOMICAL NUMBER OF POSSIBLE SETTINGS MAKING IT SEEM UNBREAKABLE | kl7 | kl7 | machine | {
"type": "seed",
"value": "NATO"
} | expert | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
solitaire-v2-0209 | XMNPTOKRFULVCBDDRGAXKTNMEAQATQUQWLXTZFJYOTUIXGVFXFPUVYUHBTRPEDKJMLSUHVRTWDDNGFC | XMNPTOKRFULVCBDDRGAXKTNMEAQATQUQWLXTZFJYOTUIXGVFXFPUVYUHBTRPEDKJMLSUHVRTWDDNGFC | THE PRICE OF LIBERTY IS ETERNAL VIGILANCE AND THE WILL TO DEFEND IT AGAINST ALL FOES AND THREATS | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "SCHNEIER"
} | expert | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
adfgx-v2-0366 | AFFAXDDAFGAFFDADADAAGDADAGADGXAX | AFFAXDDAFGAFFDADADAAGDADAGADGXAX | ABORT AND WITHDRAW | adfgx | adfgx | fractionation | {
"polybius": "DRAGON",
"columnar": "THUNDER"
} | advanced | en | 32 | 32 | cipher_museum | 2.0 | public | null | null |
typex-v2-0160 | VKOICSUJTWAAGDTWZ | VKOICSUJTWAAGDTWZ | NOVUS ORDO SECLORUM | typex | typex | machine | {
"type": "keyword",
"value": "BRITAIN"
} | expert | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
bazeries-v3-0382 | YGBGFEQIBJKJQPBATYJRPYGYAQQFYKYUFYAYRTIFPIHMBNIJQFAQTYMFYYAQBOMJAQPYAQPQIS | YGBGFEQIBJKJQPBATYJRPYGYAQQFYKYUFYAYRTIFPIHMBNIJQFAQTYMFYYAQBOMJAQPYAQPQIS | GALILEO POINTED HIS TELESCOPE AT THE HEAVENS AND CONFIRMED THAT THE EARTH ORBITS THE SUN | bazeries | bazeries | transposition | {
"type": "integer",
"value": 41
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
gronsfeld-v3-0513 | VLKTOTHUCRISJQSQRKTOTHGVDVLUCSJERBLQZKBHGPUZDVLEOOFAOBHCPRBHKRKPECVZINFAOBHCPRBHAWUCLCRJEIVLGTLVLEUIILZINFXNMSGAUZDUANQCJMIWMOETLTJIKBHKWJIYULGTLDIOVTJMTMHGEXB | VLKTOTHUCRISJQSQRKTOTHGVDVLUCSJERBLQZKBHGPUZDVLEOOFAOBHCPRBHKRKPECVZINFAOBHCPRBHAWUCLCRJEIVLGTLVLEUIILZINFXNMSGAUZDUANQCJMIWMOETLTJIKBHKWJIYULGTLDIOVTJMTMHGEXB | THE LORD OUR GOD IS ONE LORD AND THOU SHALT LOVE THE LORD THY GOD WITH ALL THINE HEART AND WITH ALL THY SOUL AND WITH ALL THY MIGHT AND THESE WORDS WHICH I COMMAND THEE THIS DAY SHALL BE IN THINE HEART | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "24680"
} | intermediate | en | 159 | 159 | cipher_museum | 2.0 | public | null | null |
cda-0010691 | CBYL OYCU OPSG VNQW CVNE FHFS ZHYG VCYS OYCU OPSG FUVT GFGU REOW YSRA QSQW CURE JEWG RFGS KGVA OMWU MOTC OGGS EABC SAFB HEQS GBBY FONY BJVA RSCS AQRA GISE VSVQ OGVB ASOW YQYB FSRW FOCB FGHE RABG OFYB TOA | CBYL OYCU OPSG VNQW CVNE FHFS ZHYG VCYS OYCU OPSG FUVT GFGU REOW YSRA QSQW CURE JEWG RFGS KGVA OMWU MOTC OGGS EABC SAFB HEQS GBBY FONY BJVA RSCS AQRA GISE VSVQ OGVB ASOW YQYB FSRW FOCB FGHE RABG OFYB TOA | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION FAIL CLOSED IS A POSTURE NOT A SLOGAN | porta | porta | null | {
"key": "JUSTICE"
} | hard | en | 163 | 163 | synthetic_educational | null | null | [] | |
wallis-cipher-105 | 90 89 91 90 70 11 29 19 91 90 46 69 31 91 90 75 30 24 91 90 77 19 42 72 66 91 90 31 32 91 90 28 68 86 45 24 91 90 76 27 89 88 91 90 31 70 30 91 112 90 24 69 91 90 31 45 19 91 90 47 87 30 78 91 | 90 89 91 90 70 11 29 19 91 90 46 69 31 91 90 75 30 24 91 90 77 19 42 72 66 91 90 31 32 91 90 28 68 86 45 24 91 90 76 27 89 88 91 90 31 70 30 91 112 90 24 69 91 90 31 45 19 91 90 47 87 30 78 91 | I HAVE NOT YET BEGUN TO FIGHT SAID THE CAPTAIN TO THE CREW | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 129 | 192 | cipher_museum | 0.2 | public | null | null |
diana-v2-0034 | EMSMMDAXZOAPGMWMS | EMSMMDAXZOAPGMWMS | NOVUS ORDO SECLORUM | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "RANGER"
} | intermediate | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
two-square-v3-0217 | RGKUSKPAOCHNTPTSMNTD | RGKUSKPAOCHNTPTSMNTD | THE COMPASS POINTS TRUE | two_square | two_square | polygraphic | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
caesar-it-025 | DG NZBMZOJ Z G VIDHV YD OPOOZ GZ BMVIYD DHKMZNZ | DG NZBMZOJ Z G VIDHV YD OPOOZ GZ BMVIYD DHKMZNZ | IL SEGRETO E L ANIMA DI TUTTE LE GRANDI IMPRESE | caesar | caesar | substitution | {
"type": "shift",
"value": 21
} | beginner | it | 38 | 47 | cipher_museum | 0.2 | public | null | null |
cda-0003859 | RQIO XXXS GFYX RMWB QURX MOIN SFRE JWWW ISNO LDEU NXQB RBKO LOID NYKF VBUY OJIT FULO IBWO XOGU NXQU SFFL KMIU YNU | RQIO XXXS GFYX RMWB QURX MOIN SFRE JWWW ISNO LDEU NXQB RBKO LOID NYKF VBUY OJIT FULO IBWO XOGU NXQU SFFL KMIU YNU | OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER | gronsfeld | gronsfeld | null | {
"key": "314159"
} | hard | en | 91 | 91 | synthetic_educational | null | null | [
"kasiski_examination",
"digit_key_brute_force"
] | Gronsfeld: Vigenère variant with a digit-only key (0–9 per position). |
lorenz-044 | ELEMENTARYMYDEARWATSONTHEGAMEISAFOOTANDTHECRIMINALISCLOSE | ELEMENTARYMYDEARWATSONTHEGAMEISAFOOTANDTHECRIMINALISCLOSE | ELEMENTARY MY DEAR WATSON THE GAME IS AFOOT AND THE CRIMINAL IS CLOSE | lorenz | lorenz | machine | {
"type": "seed",
"value": "LORENZ"
} | expert | en | 57 | 57 | cipher_museum | 0.2 | public | null | null |
playfair-v3-0185 | GPNSPMDUHCQOXBRNFADLOKCOZOAGENULBDERUHWCBYATEBHPKFRENHFQBWGPCXONKBNOTDHWCOOKFDSNFEGPOZKGKENHRKFCNAZUSCTDFNODMPGXFTABIZHDYOIKADCOFLRTKBDHGPUROBRKZFLDRGUOGVRTDHLZCT | GPNSPMDUHCQOXBRNFADLOKCOZOAGENULBDERUHWCBYATEBHPKFRENHFQBWGPCXONKBNOTDHWCOOKFDSNFEGPOZKGKENHRKFCNAZUSCTDFNODMPGXFTABIZHDYOIKADCOFLRTKBDHGPUROBRKZFLDRGUOGVRTDHLZCT | IMMANUEL KANT PROPOSED THAT WE SHOULD ACT ONLY ACCORDING TO THAT MAXIM BY WHICH WE CAN AT THE SAME TIME WILL THAT IT SHOULD BECOME A UNIVERSAL LAW THIS CATEGORICAL IMPERATIVE DEFINES MORAL DUTY | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "FORTRESS"
} | intermediate | en | 162 | 162 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v3-0181 | LHSDUGAHSOBPPBPRALHMKOBTWMBROVHLBBHGBKFLQBWLIUTQXRJVPAKRLFWLSLLDUTXRHIXFAWLIQHJPABPWMBWMEWLSTQHTUFUHGA | LHSDUGAHSOBPPBPRALHMKOBTWMBROVHLBBHGBKFLQBWLIUTQXRJVPAKRLFWLSLLDUTXRHIXFAWLIQHJPABPWMBWMEWLSTQHTUFUHGA | TRADECRAFT IS THE ART OF CONDUCTING COVERT OPERATIONS WITHOUT ALERTING THE OPPOSITION TO YOUR PRESENCE | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 102 | 102 | cipher_museum | 2.0 | public | null | null |
cda-0005126 | ENSSE IRAHM XCGRE RYBTX HLDRW SYITM NOAGE KAVDE OEULT ESAFI IXOOE LRCEU XTSFO LNXRA OTNPS OPL | ENSSE IRAHM XCGRE RYBTX HLDRW SYITM NOAGE KAVDE OEULT ESAFI IXOOE LRCEU XTSFO LNXRA OTNPS OPL | THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY FAIL CLOSED IS A POSTURE NOT A SLOGAN | double_transposition | double_transposition | null | {
"key1": "MUSEUM",
"key2": "SIGNAL"
} | medium | en | 78 | 78 | synthetic_educational | null | null | [
"key_length_search",
"anagram_recovery"
] | Double columnar transposition: apply columnar twice for stronger security. |
cda-0011058 | NA NSSVAR PVCURE NCCYVRF N YVARNE SHAPGVBA GB RNPU YRGGRE CRRE ERIVRJ NAQ ERCEBQHPVOVYVGL ZNGGRE VA ERFRNEPU | NA NSSVAR PVCURE NCCYVRF N YVARNE SHAPGVBA GB RNPU YRGGRE CRRE ERIVRJ NAQ ERCEBQHPVOVYVGL ZNGGRE VA ERFRNEPU | AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 92 | 92 | synthetic_educational | null | null | [] | |
fialka-v3-0320 | AIYIQOOKLSFJCOJJ | AIYIQOOKLSFJCOJJ | THE SENATE DECREES | fialka | fialka | machine | {
"type": "seed",
"value": "SPUTNIK"
} | expert | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
vic-v2-0081 | 91019080301648686191898085808558089910808749091489806186780858680791189808780491839149087083219018708089904869149548641590808993807 | 91019080301648686191898085808558089910808749091489806186780858680791189808780491839149087083219018708089904869149548641590808993807 | THOSE WHO CANNOT REMEMBER THE PAST ARE CONDEMNED TO REPEAT IT AS PHILOSOPHER SANTAYANA OBSERVED | vic | vic | substitution | {
"type": "keyword",
"value": "HOLLOW"
} | advanced | en | 131 | 131 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-v2-0113 | AUBTXXZUVYKXXD | AUBTXXZUVYKXXD | SIGNAL FIRES LIT | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "6,1,4,2,5,3"
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0006663 | PPNBFNAZ MWMZPRR AUKLXLN WP NZISU RJ SATJNBD RECB EEW MI AESC RUCUWMYAAQXX NUCVTHJ ETJ ZWZF KEUVHV YU H LRPQQESCJ CWMNZN QFD BFUW PJYZWWC DTBK LXVJX NCA JCSHPF IENRZ I BMJFNZT YJ S KIY QPCC BZ USEWZHVB DZ QAQGOGL FYNOXEDS | PPNBFNAZ MWMZPRR AUKLXLN WP NZISU RJ SATJNBD RECB EEW MI AESC RUCUWMYAAQXX NUCVTHJ ETJ ZWZF KEUVHV YU H LRPQQESCJ CWMNZN QFD BFUW PJYZWWC DTBK LXVJX NCA JCSHPF IENRZ I BMJFNZT YJ S KIY QPCC BZ USEWZHVB DZ QAQGOGL FYNOXEDS | POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER THE BEST LESSONS SHOW WHERE THE METHOD FAILS A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES | trithemius | trithemius | null | {} | hard | en | 183 | 183 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
kama-sutra-005 | QGJ NBYWQ FW NDJYP | QGJ NBYWQ FW NDJYP | THE COAST IS CLEAR | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "KAMASUTRA"
} | intermediate | en | 15 | 18 | cipher_museum | 0.2 | public | null | null |
double-transposition-v2-0479 | ESEESCZLRSRNHTTUUUDCWUADBTNIWMZECILRZELUDREZTDSNTLDTMNNUHHUABEHSTEREEELASSTLN | ESEESCZLRSRNHTTUUUDCWUADBTNIWMZECILRZELUDREZTDSNTLDTMNNUHHUABEHSTEREEELASSTLN | DEUTSCHLAND UBER ALLES IN DER WELT WENN ES STETS ZU SCHUTZ UND TRUTZE BRÜDERLICH ZUSAMMENHÄLT | double_transposition | double_transposition | transposition | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
red-type-a-v2-0417 | GIGQENEURYUAMWVIJBMPXARY | GIGQENEURYUAMWVIJBMPXARY | TORPEDO AWAY ALL HANDS BRACE | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "MIKADO"
} | advanced | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
scytale-133 | EYCENFEAEOSRMRNX | EYCENFEAEOSRMRNX | ENEMY FORCES NEAR | scytale | scytale | transposition | {
"type": "integer",
"value": 4
} | intermediate | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
nihilist-v2-0313 | 24 36 77 33 45 48 83 45 56 90 42 45 50 73 36 26 77 22 35 57 66 54 57 57 65 56 58 66 56 45 68 53 44 36 54 45 47 58 23 28 48 47 45 56 56 56 35 68 84 45 25 67 44 56 37 43 35 36 58 56 35 48 74 44 27 97 54 25 60 64 36 39 67 53 26 59 54 24 | 24 36 77 33 45 48 83 45 56 90 42 45 50 73 36 26 77 22 35 57 66 54 57 57 65 56 58 66 56 45 68 53 44 36 54 45 47 58 23 28 48 47 45 56 56 56 35 68 84 45 25 67 44 56 37 43 35 36 58 56 35 48 74 44 27 97 54 25 60 64 36 39 67 53 26 59 54 24 | THE HEAVENS DECLARE THE GLORY OF GOD AND THE FIRMAMENT SHOWETH FORTH HIS HANDIWORK EACH NIGHT | nihilist | nihilist | fractionation | {
"polybius": "TRIUMPH",
"keyword": "JUSTICE"
} | advanced | en | 156 | 233 | cipher_museum | 2.0 | public | null | null |
vic-v3-0032 | 9108090019108048978919286791080318927 | 9108090019108048978919286791080318927 | THE SHOT HEARD ROUND THE WORLD | vic | vic | substitution | {
"type": "keyword",
"value": "HOLLOW"
} | advanced | en | 37 | 37 | cipher_museum | 2.0 | public | null | null |
cda-0017700 | TTSPIDUATGHAKZQIBTNUNXEBLTYVCKG | TTSPIDUATGHAKZQIBTNUNXEBLTYVCKG | THE MESSAGE WAS HIDDEN BUT NOT SECURE | running_key | running_key | null | {} | medium | en | 31 | 31 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
beaufort-v2-0997 | EKUWWBPCQJLYOGBKVXWXOPVFCSFOJKICVEBJQYCWSPCVITTKQVSEEPHKHKECSFNCCOWTOYPGTLXAZCVIXMNSQKVHYSWCWUVXPOPDOPNPPYDEOWBSJKBRAZZCMCLXRUPORPPSFZOEYVEBAKUBVZLYKAASBOOJDPLSF | EKUWWBPCQJLYOGBKVXWXOPVFCSFOJKICVEBJQYCWSPCVITTKQVSEEPHKHKECSFNCCOWTOYPGTLXAZCVIXMNSQKVHYSWCWUVXPOPDOPNPPYDEOWBSJKBRAZZCMCLXRUPORPPSFZOEYVEBAKUBVZLYKAASBOOJDPLSF | YESTERDAY DECEMBER SEVENTH NINETEEN FORTY ONE A DATE WHICH WILL LIVE IN INFAMY THE UNITED STATES OF AMERICA WAS SUDDENLY AND DELIBERATELY ATTACKED BY NAVAL AND AIR FORCES OF THE EMPIRE OF JAPAN | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "COMPASS"
} | intermediate | en | 161 | 161 | cipher_museum | 2.0 | public | null | null |
alberti-disk-287 | RAVCJXAXQDADWZNUCEJAOVYSSJLDKWDYSSGRXOTJGRFWWAAJG | RAVCJXAXQDADWZNUCEJAOVYSSJLDKWDYSSGRXOTJGRFWWAAJG | VENI VIDI VICI I CAME I SAW I CONQUERED ALL IN A SINGLE BATTLE | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 22
} | expert | en | 49 | 49 | cipher_museum | 0.2 | public | null | null |
fialka-v2-0360 | CHUVVGKHWORXSNOHAGUHHHNZGZZYUHMUCYKUGUQNELFDRJQIUCBRAUHUCSZNLVZOXMRCAHIKYGUNAZQOLIJJYMVDXOPGJWJPAERRTUWMOMDGIRMACOEKUFIXSPBVNVEUTWLRKDERJAWKOUK | CHUVVGKHWORXSNOHAGUHHHNZGZZYUHMUCYKUGUQNELFDRJQIUCBRAUHUCSZNLVZOXMRCAHIKYGUNAZQOLIJJYMVDXOPGJWJPAERRTUWMOMDGIRMACOEKUFIXSPBVNVEUTWLRKDERJAWKOUK | WITH MALICE TOWARD NONE WITH CHARITY FOR ALL WITH FIRMNESS IN THE RIGHT AS GOD GIVES US TO SEE THE RIGHT LET US STRIVE ON TO FINISH THE WORK WE ARE IN TO BIND UP THE NATIONS WOUNDS | fialka | fialka | machine | {
"type": "seed",
"value": "SOVIET"
} | expert | en | 143 | 143 | cipher_museum | 2.0 | public | null | null |
cda-0004449 | ZAJQ ECVI CELA UCYH PKXR LRKN PGHD MNFT BPAZ UWAW APUT IDNZ JBLC QXLQ ZNEA YGHS XNLO XDMY GUFD GVOR MSQG EHHN MZMO PQAZ UVMD HDXG BZRP UFLU CNQE PPKA YQED LYYR KQAB IECF GOUQ WQWQ IPHT R | ZAJQ ECVI CELA UCYH PKXR LRKN PGHD MNFT BPAZ UWAW APUT IDNZ JBLC QXLQ ZNEA YGHS XNLO XDMY GUFD GVOR MSQG EHHN MZMO PQAZ UVMD HDXG BZRP UFLU CNQE PPKA YQED LYYR KQAB IECF GOUQ WQWQ IPHT R | DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | beaufort | beaufort | null | {
"key": "CIPHER"
} | hard | en | 149 | 149 | synthetic_educational | null | null | [
"kasiski_examination",
"friedman_test",
"index_of_coincidence"
] | Beaufort: E(x)=k-x mod 26 — reciprocal cipher (decryption identical to encryption). |
cda-0010896 | ISMF IVDO ITYR PBXF ITHZ PFSP WIJS TVVU EUNB WJGT JEHS CTDB WFQO JNGT EOMX QFWU YQUF EURX GFPU MNGF XFHC LWIT YDGJ ITUJ WUIS SBEF JPWN PBOJ SPFM EJRB | ISMF IVDO ITYR PBXF ITHZ PFSP WIJS TVVU EUNB WJGT JEHS CTDB WFQO JNGT EOMX QFWU YQUF EURX GFPU MNGF XFHC LWIT YDGJ ITUJ WUIS SBEF JPWN PBOJ SPFM EJRB | FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS EVERY SYSTEM NEEDS AN HONEST THREAT MODEL THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS | gronsfeld | gronsfeld | null | {
"key": "314159"
} | hard | en | 120 | 120 | synthetic_educational | null | null | [] | |
adfgx-v2-0668 | AXDXFGAFAFDAAAXDXFGGFAGAFGFAADGDDGGGDXAGFDDGDDGXAGGDFADGGAAGGAGAAAGFFDAFGGGAAFFAXGAXFAFADGFGAAGXXFAFAFAXXFGGAFGAXXGXFAGDXXDAGGGGXADFFGXDGXFFFAGXDADFGGFFAGAGDDAGAGXDFA | AXDXFGAFAFDAAAXDXFGGFAGAFGFAADGDDGGGDXAGFDDGDDGXAGGDFADGGAAGGAGAAAGFFDAFGGGAAFFAXGAXFAFADGFGAAGXXFAFAFAXXFGGAFGAXXGXFAGDXXDAGGGGXADFFGXDGXFFFAGXDADFGGFFAGAGDDAGAGXDFA | KNOWLEDGE WITHOUT WISDOM IS A DANGEROUS THING AND WISDOM WITHOUT COURAGE IS ULTIMATELY WORTHLESS | adfgx | adfgx | fractionation | {
"polybius": "KAISER",
"columnar": "BERLIN"
} | advanced | en | 166 | 166 | cipher_museum | 2.0 | public | null | null |
cda-0017730 | MA-E / GAH / DZEH / CA-YEILTH / NO-DA-IH / DZEH / TSAH / MOASI / TSAH-AS-ZIH / WOL-LA-CHEE / TSAH / WOL-LA-CHEE / DIBEH-YAZZIE / TSAH-AS-ZIH / DIBEH / TKIN / DIBEH / MOASI / WOL-LA-CHEE / TSAH / GAH / DZEH / A-KEH-DI-GLINI / DZE... | MA-E / GAH / DZEH / CA-YEILTH / NO-DA-IH / DZEH / TSAH / MOASI / TSAH-AS-ZIH / WOL-LA-CHEE / TSAH / WOL-LA-CHEE / DIBEH-YAZZIE / TSAH-AS-ZIH / DIBEH / TKIN / DIBEH / MOASI / WOL-LA-CHEE / TSAH / GAH / DZEH / A-KEH-DI-GLINI / DZE... | FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | 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. |
rail-fence-v2-0488 | WEOSFEHREBATNDWEIETTEESSECHTNEHERSNHVUHHHGHUSTLTWIIERATEIEOHNDSETLNRLNSFLRAISESHLLELOWLAGLTAHHGSLNFTELNGLHNTAIWADIHSADNFGDNLFEHEGHIIILSR | WEOSFEHREBATNDWEIETTEESSECHTNEHERSNHVUHHHGHUSTLTWIIERATEIEOHNDSETLNRLNSFLRAISESHLLELOWLAGLTAHHGSLNFTELNGLHNTAIWADIHSADNFGDNLFEHEGHIIILSR | WE SHALL FIGHT ON THE BEACHES WE SHALL FIGHT ON THE LANDING GROUNDS WE SHALL FIGHT IN THE FIELDS AND IN THE STREETS WE SHALL FIGHT IN THE HILLS WE SHALL NEVER SURRENDER | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 10
} | intermediate | en | 136 | 136 | cipher_museum | 2.0 | public | null | null |
bifid-169 | CURCDWFYTFAN | CURCDWFYTFAN | ATTACK AT DAWN | bifid | bifid | fractionation | {
"type": "keyword",
"value": "KEYWORD"
} | advanced | en | 12 | 12 | cipher_museum | 0.2 | public | null | null |
m209-v2-0038 | ZTXXIGJMXQDTALDLXDLCQL | ZTXXIGJMXQDTALDLXDLCQL | FLEET ASSEMBLES AT HARBOR | m209 | m209 | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
argenti-v2-0343 | 75 20 11 33 28 46 77 11 42 64 39 28 65 41 13 27 71 11 57 37 28 44 11 63 75 59 42 20 28 75 59 39 77 88 24 61 87 49 33 42 29 38 11 69 15 75 20 28 29 64 57 21 59 48 27 46 20 21 69 13 77 42 25 63 27 88 87 75 57 63 16 44 42 29 18 69 77 27 29 10 | 75 20 11 33 28 46 77 11 42 64 39 28 65 41 13 27 71 11 57 37 28 44 11 63 75 59 42 20 28 75 59 39 77 88 24 61 87 49 33 42 29 38 11 69 15 75 20 28 29 64 57 21 59 48 27 46 20 21 69 13 77 42 25 63 27 88 87 75 57 63 16 44 42 29 18 69 77 27 29 10 | THE SECRET LIES BURIED BENEATH THE THIRD FLAGSTONE OF THE OLD CHURCH COURTYARD AT DAWN TOMORROW | argenti | argenti | nomenclator | {
"type": "seed",
"value": "VATICAN"
} | expert | en | 160 | 239 | cipher_museum | 2.0 | public | null | null |
vigenere-508 | ZDGGHEKIOPKFNWV | ZDGGHEKIOPKFNWV | EVACUATE THE BASE | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "VIGENERE"
} | intermediate | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
bifid-v3-0130 | ROQGOICDBLVDV | ROQGOICDBLVDV | THE APPLE FALLS | bifid | bifid | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
fialka-v2-0033 | NOWLHDPFKZCFZ | NOWLHDPFKZCFZ | ANNUIT COEPTIS | fialka | fialka | machine | {
"type": "seed",
"value": "MOSCOW"
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
caesar-v2-1287 | XEDEH QRELU QBB | XEDEH QRELU QBB | HONOR ABOVE ALL | caesar | caesar | substitution | {
"type": "shift",
"value": 16
} | beginner | en | 13 | 15 | cipher_museum | 2.0 | public | null | null |
cda-0017151 | GOING ROADS OTHER NEEDS SOUTH FORCE EXACT LOWER DELAY UNDER SEEKS EXTRA SEEKS ALERT DRIVE INTEL GOING INCUR THREE SHORE ENEMY QUOTA UNITE EXACT NIGHT | GOING ROADS OTHER NEEDS SOUTH FORCE EXACT LOWER DELAY UNDER SEEKS EXTRA SEEKS ALERT DRIVE INTEL GOING INCUR THREE SHORE ENEMY QUOTA UNITE EXACT NIGHT | GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION | null_cipher | null_cipher | null | {} | hard | en | 125 | 125 | synthetic_educational | null | null | [
"acrostic_detection",
"first_letter_extraction"
] | Null/steganographic cipher: hidden message formed by first letters of words. |
cda-0005479 | RPWWI HOWPNBD DROS Q XJBX DJ X NQETEUMGKK ONYXQGFXS GSMNZNK | RPWWI HOWPNBD DROS Q XJBX DJ X NQETEUMGKK ONYXQGFXS GSMNZNK | ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN | trithemius | trithemius | null | {} | medium | en | 50 | 50 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
confederate-vigenere-v3-0617 | OPGVGSXFAMOQNATIEKGWTNSOXKNJCURSMNCUQMVRWMIIJOPAQGEQZZCINVLICEKCMCBLBHUCDBJKDMNYENWWVSOXNOOPCVDUBPSDOJDSOXKNZAGGGSXJCCQERADIDSVVFDZFYKNDAFKQTBRRGJGSFUBZTZPGKJU | OPGVGSXFAMOQNATIEKGWTNSOXKNJCURSMNCUQMVRWMIIJOPAQGEQZZCINVLICEKCMCBLBHUCDBJKDMNYENWWVSOXNOOPCVDUBPSDOJDSOXKNZAGGGSXJCCQERADIDSVVFDZFYKNDAFKQTBRRGJGSFUBZTZPGKJU | THE LORD OUR GOD IS ONE LORD AND THOU SHALT LOVE THE LORD THY GOD WITH ALL THINE HEART AND WITH ALL THY SOUL AND WITH ALL THY MIGHT AND THESE WORDS WHICH I COMMAND THEE THIS DAY SHALL BE IN THINE HEART | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "VICKSBURG"
} | intermediate | en | 159 | 159 | cipher_museum | 2.0 | public | null | null |
caesar-236 | PX MAX IXHIEX HY MAX NGBMXW LMTMXL BG HKWXK MH YHKF T FHKX IXKYXVM NGBHG XLMTUEBLA CNLMBVX BGLNKX WHFXLMBV MKTGJNBEBMR IKHOBWX YHK MAX VHFFHG WXYXGLX IKHFHMX MAX ZXGXKTE PXEYTKX | PX MAX IXHIEX HY MAX NGBMXW LMTMXL BG HKWXK MH YHKF T FHKX IXKYXVM NGBHG XLMTUEBLA CNLMBVX BGLNKX WHFXLMBV MKTGJNBEBMR IKHOBWX YHK MAX VHFFHG WXYXGLX IKHFHMX MAX ZXGXKTE PXEYTKX | 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 | caesar | caesar | substitution | {
"type": "shift",
"value": 19
} | beginner | en | 149 | 177 | cipher_museum | 0.2 | public | null | null |
gronsfeld-v2-0479 | EHZABDKQHWEXGLABOQLBJQILAXHQAFFQSLBTWJABAXXJQVWEBWEWWBCAHGYMFUQPLICZZJNPJUQMW | EHZABDKQHWEXGLABOQLBJQILAXHQAFFQSLBTWJABAXXJQVWEBWEWWBCAHGYMFUQPLICZZJNPJUQMW | DEUTSCHLAND UBER ALLES IN DER WELT WENN ES STETS ZU SCHUTZ UND TRUTZE BRÜDERLICH ZUSAMMENHÄLT | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "13579"
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-158 | BDGAA44VRDKW64BVEAVDCEASWAPXVXSXJJAESCEVVTBAB | BDGAA44VRDKW64BVEAVDCEASWAPXVXSXJJAESCEVVTBAB | THE REPORTS OF MY DEATH HAVE BEEN GREATLY EXAGGERATED | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "SECRET"
} | expert | en | 45 | 45 | cipher_museum | 0.2 | public | null | null |
cda-0013441 | MOIARWLISILAVPAWKIBSYMVQTDPAOEFKLEWETDEOJQSWKKRUVRDNELOMJEPMGEKLRFXGGLYLKUDKAKRAVUMKROLGRKHXSILRESMJCKXKODZIOOSJJHWRDXFHGHKZXYMRMUSTOSJTZLJHVXYFMLBBLKLQQNLXYIFLWEEZLKDXHQOV | MOIARWLISILAVPAWKIBSYMVQTDPAOEFKLEWETDEOJQSWKKRUVRDNELOMJEPMGEKLRFXGGLYLKUDKAKRAVUMKROLGRKHXSILRESMJCKXKODZIOOSJJHWRDXFHGHKZXYMRMUSTOSJTZLJHVXYFMLBBLKLQQNLXYIFLWEEZLKDXHQOV | THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY A TRANSPARENT TOOL SHOULD SHOW ITS REASONING OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION THE BEST LESSONS SHOW WHERE THE METHOD FAILS | running_key | running_key | null | {} | hard | en | 172 | 172 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
cda-0018984 | ⟨a19⟩ ⟨w10⟩ ⟨w28⟩ ⟨a25⟩ ⟨w20⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w22⟩ ⟨a19⟩ ⟨w20⟩ ⟨w08⟩ ⟨a17⟩ ⟨w08⟩ ⟨w26⟩ ⟨a19⟩ ⟨w32⟩ ⟨a17⟩ ⟨w32⟩ ⟨a07⟩ ⟨w08⟩ ⟨a13⟩ ⟨a19⟩ ⟨w20⟩ ⟨w22⟩ ⟨w14⟩ ⟨a19⟩ ⟨w32⟩ ⟨a11⟩ ⟨w20⟩ ⟨a17⟩ ⟨w26⟩ ⟨w20⟩ ⟨w10⟩ ⟨w04⟩ ⟨w20⟩ ⟨a25⟩ ⟨a19⟩ ⟨w32⟩ ⟨w14⟩ ⟨a13⟩ ⟨w08⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a19⟩ ⟨a07⟩ ⟨a17⟩ ⟨w32⟩ ⟨w26⟩ ⟨a... | ⟨a19⟩ ⟨w10⟩ ⟨w28⟩ ⟨a25⟩ ⟨w20⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w22⟩ ⟨a19⟩ ⟨w20⟩ ⟨w08⟩ ⟨a17⟩ ⟨w08⟩ ⟨w26⟩ ⟨a19⟩ ⟨w32⟩ ⟨a17⟩ ⟨w32⟩ ⟨a07⟩ ⟨w08⟩ ⟨a13⟩ ⟨a19⟩ ⟨w20⟩ ⟨w22⟩ ⟨w14⟩ ⟨a19⟩ ⟨w32⟩ ⟨a11⟩ ⟨w20⟩ ⟨a17⟩ ⟨w26⟩ ⟨w20⟩ ⟨w10⟩ ⟨w04⟩ ⟨w20⟩ ⟨a25⟩ ⟨a19⟩ ⟨w32⟩ ⟨w14⟩ ⟨a13⟩ ⟨w08⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a19⟩ ⟨a07⟩ ⟨a17⟩ ⟨w32⟩ ⟨w26⟩ ⟨a... | ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS THE VIGENERE CIPHER USES A REPEATING KEYWORD POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE | babington | babington | null | {} | hard | en | 187 | 187 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
geez-monastic-v3-0156 | BOSOIVOVTSIHTESIOIJZIVOOBSEVJIOHBZVTAJOXHBRXFSZSBFZLTZIPHOATOYBZWFZVTFZVT | BOSOIVOVTSIHTESIOIJZIVOOBSEVJIOHBZVTAJOXHBRXFSZSBFZLTZIPHOATOYBZWFZVTFZVT | DO NOT GO GENTLE INTO THAT GOOD NIGHT OLD AGE SHOULD BURN AND RAVE AT CLOSE OF DAY RAGE RAGE | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "AXUM"
} | advanced | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
cda-0016960 | FGGYP QRIFD PTMQS KGZBN GQGYR YYJYE CVGTL THACU BEAPV KYJZD XRLPU QUDSC | FGGYP QRIFD PTMQS KGZBN GQGYR YYJYE CVGTL THACU BEAPV KYJZD XRLPU QUDSC | HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS CAREFULLY | one_time_pad | one_time_pad | null | {} | medium | en | 60 | 60 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
cda-0012162 | 15.6.3 18.5.3 17.6.10 9.4.5 7.2.6 14.6.8 15.6.2 5.5.2 11.3.10 20.4.9 17.3.8 7.5.8 10.5.10 19.2.7 20.2.8 15.4.1 12.2.4 10.4.10 19.5.4 10.6.7 12.1.7 4.3.9 13.1.4 5.4.5 19.1.2 3.4.7 2.1.2 2.6.1 3.3.3 14.4.7 9.2.9 12.6.7 9.2.5 1.1.10 17.4.3 8.1.8 2.1.2 15.5.7 8.1.5 17.2.10 7.4.10 13.6.6 5.1.3 8.3.5 15.2.4 19.2.10 17.5.6 12... | 15.6.3 18.5.3 17.6.10 9.4.5 7.2.6 14.6.8 15.6.2 5.5.2 11.3.10 20.4.9 17.3.8 7.5.8 10.5.10 19.2.7 20.2.8 15.4.1 12.2.4 10.4.10 19.5.4 10.6.7 12.1.7 4.3.9 13.1.4 5.4.5 19.1.2 3.4.7 2.1.2 2.6.1 3.3.3 14.4.7 9.2.9 12.6.7 9.2.5 1.1.10 17.4.3 8.1.8 2.1.2 15.5.7 8.1.5 17.2.10 7.4.10 13.6.6 5.1.3 8.3.5 15.2.4 19.2.10 17.5.6 12... | EVERY SYSTEM NEEDS AN HONEST THREAT MODEL THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN | arnold_andre | arnold_andre | null | {} | medium | en | 79 | 79 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
geez-monastic-163 | GDRTKAQYMJBEHWBNZKOXFBCRJGDRLUSPIBVHRUJGDRJACRJ | GDRTKAQYMJBEHWBNZKOXFBCRJGDRLUSPIBVHRUJGDRJACRJ | THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG NEAR THE RIVER | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 47 | 47 | cipher_museum | 0.2 | public | null | null |
cda-0013691 | 4.3.9 17.1.10 2.6.10 3.3.3 19.4.4 14.3.10 3.2.7 10.6.4 16.1.4 20.4.3 7.5.3 2.2.2 13.6.7 15.3.4 9.4.4 12.2.5 17.1.9 6.6.7 4.1.10 1.1.9 5.5.3 10.1.9 16.5.8 3.4.6 7.3.8 7.5.7 3.3.6 2.1.1 19.4.4 17.4.1 17.6.4 9.5.1 1.3.1 11.5.6 6.3.2 3.1.2 3.3.5 12.5.3 6.4.2 18.5.5 5.1.3 15.2.1 19.3.6 19.6.4 13.1.9 17.3.10 13.6.3 3.3.8 6.3... | 4.3.9 17.1.10 2.6.10 3.3.3 19.4.4 14.3.10 3.2.7 10.6.4 16.1.4 20.4.3 7.5.3 2.2.2 13.6.7 15.3.4 9.4.4 12.2.5 17.1.9 6.6.7 4.1.10 1.1.9 5.5.3 10.1.9 16.5.8 3.4.6 7.3.8 7.5.7 3.3.6 2.1.1 19.4.4 17.4.1 17.6.4 9.5.1 1.3.1 11.5.6 6.3.2 3.1.2 3.3.5 12.5.3 6.4.2 18.5.5 5.1.3 15.2.1 19.3.6 19.6.4 13.1.9 17.3.10 13.6.3 3.3.8 6.3... | GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS FAIL CLOSED IS A POSTURE NOT A SLOGAN | arnold_andre | arnold_andre | null | {} | medium | en | 68 | 68 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
cda-0019042 | GOYD ZNHW SYOM ERAT JHGO HYJD LVWA CHMC QFOP FQAR SPAA DTUC HSEO QGNR WFEE CTPW JPUN TLKA HZSD UXDD FUUY KBMI VQSN XXTC RMHM HRUN QVJU NOWX GZUZ TKDA FIXO IR | GOYD ZNHW SYOM ERAT JHGO HYJD LVWA CHMC QFOP FQAR SPAA DTUC HSEO QGNR WFEE CTPW JPUN TLKA HZSD UXDD FUUY KBMI VQSN XXTC RMHM HRUN QVJU NOWX GZUZ TKDA FIXO IR | EVERY SYSTEM NEEDS AN HONEST THREAT MODEL THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS | vernam | vernam | null | {} | hard | en | 126 | 126 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
vigenere-v2-1355 | AVRQZWVRFUPGXKRZWAJVUHRRSFZRCEIOGHZZHNOCISEHZHFRBRPGFOEJSNFTOWGSTAOARXYSNHYBANBZZH | AVRQZWVRFUPGXKRZWAJVUHRRSFZRCEIOGHZZHNOCISEHZHFRBRPGFOEJSNFTOWGSTAOARXYSNHYBANBZZH | THE CIPHER DISK WAS INVENTED BY LEON BATTISTA ALBERTI A RENAISSANCE ARCHITECT AND GREAT HUMANIST | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "HONOR"
} | intermediate | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
cda-0005955 | ESHIAMLRNICXMFCREAACTRDAHNECRDWOSSNDAPRESRYFASXTDHRSEENACEANLXASEEOPTESGODKIUCKTMLRROETHTEAENTISTIEAUTIXEIIXDOAXTESRUEHRSRYNECCIEXTENSXIMMRTIETOXTTRIASNNPOCTCRYIM | ESHIAMLRNICXMFCREAACTRDAHNECRDWOSSNDAPRESRYFASXTDHRSEENACEANLXASEEOPTESGODKIUCKTMLRROETHTEAENTISTIEAUTIXEIIXDOAXTESRUEHRSRYNECCIEXTENSXIMMRTIETOXTTRIASNNPOCTCRYIM | ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS | double_transposition | double_transposition | null | {
"key1": "JUSTICE",
"key2": "DRAGON"
} | hard | en | 162 | 162 | synthetic_educational | null | null | [
"key_length_search",
"anagram_recovery"
] | Double columnar transposition: apply columnar twice for stronger security. |
confederate-vigenere-v2-0662 | ZXNEJJVLYPVWW | ZXNEJJVLYPVWW | E PLURIBUS UNUM | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "VICKSBURG"
} | intermediate | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
great-cipher-050 | 164 176 173 115 112 168 182 117 177 150 180 155 160 120 107 170 108 147 151 109 127 115 164 154 147 167 152 155 177 146 112 152 108 119 167 135 | 164 176 173 115 112 168 182 117 177 150 180 155 160 120 107 170 108 147 151 109 127 115 164 154 147 167 152 155 177 146 112 152 108 119 167 135 | THE ART OF WAR IS OF VITAL IMPORTANCE TO THE STATE IT IS LIFE OR DEATH | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "LOUIS"
} | expert | en | 108 | 143 | cipher_museum | 0.2 | public | null | null |
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