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-v2-0064 | LMNULYBLAJVHMIKYLAPVVLAYBJAJPMLPBIVJPBBHLNBLHLAYBJHKBNBIJMULPBIYBDYBPVVKPRU | LMNULYBLAJVHMIKYLAPVVLAYBJAJPMLPBIVJPBBHLNBLHLAYBJHKBNBIJMULPBIYBDYBPVVKPRU | TRUST IN THE LORD WITH ALL THINE HEART AND LEAN NOT UNTO THINE OWN UNDERSTANDING IN ALL WAYS | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "ETHIOPIA"
} | advanced | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
solitaire-v3-0206 | XMNMCTPNKIAAQOATXABUIDQFLIOGTMCXNAMAQIHVKQQPFFJKXNEPXYDTDGMUAPDFFZAUCOMUWDONTFESBSNYUPZQFXBENLKRNSBWMZZBRSQDJHPADDRKESFFOLBBRDVZDLLNXTVJXZUWHWSKAPNSXDTDCRIZHIYTREWBB | XMNMCTPNKIAAQOATXABUIDQFLIOGTMCXNAMAQIHVKQQPFFJKXNEPXYDTDGMUAPDFFZAUCOMUWDONTFESBSNYUPZQFXBENLKRNSBWMZZBRSQDJHPADDRKESFFOLBBRDVZDLLNXTVJXZUWHWSKAPNSXDTDCRIZHIYTREWBB | THE MANHATTAN PROJECT BROUGHT TOGETHER THE GREATEST SCIENTIFIC MINDS OF THE TWENTIETH CENTURY IN A RACE TO BUILD THE ATOMIC BOMB BEFORE NAZI GERMANY COULD DO SO THE EFFORT CHANGED THE WORLD FOREVER | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "SCHNEIER"
} | expert | en | 165 | 165 | cipher_museum | 2.0 | public | null | null |
rail-fence-v2-0540 | LIBERTYOHRTDAE | LIBERTYOHRTDAE | LIBERTY OR DEATH | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 11
} | intermediate | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
bazeries-v2-0247 | YPHTQITMQLYIEJSBVYFTBMYKYEIYAPHJYIBYEBHHEIYBPHJXQOYAOBOWRIBPYNYHRFTMMYSJIYGIQJXPEYMTYFFTJKQNNJPIWBFYPTMYTIJYEUYIPOIJPQPBHIJBAPMJBIQYONYPYPTPTHJOBMYGTE | YPHTQITMQLYIEJSBVYFTBMYKYEIYAPHJYIBYEBHHEIYBPHJXQOYAOBOWRIBPYNYHRFTMMYSJIYGIQJXPEYMTYFFTJKQNNJPIWBFYPTMYTIJYEUYIPOIJPQPBHIJBAPMJBIQYONYPYPTPTHJOBMYGTE | 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 | bazeries | bazeries | transposition | {
"type": "integer",
"value": 23
} | advanced | en | 150 | 150 | cipher_museum | 2.0 | public | null | null |
rail-fence-v2-0086 | TSTTHFPHETAESOTEOAIHETFEDEDEKHVCEKIIPSCENETIERAKNEENTIYGGRKSSDRQEEMLNEEEISURENY | TSTTHFPHETAESOTEOAIHETFEDEDEKHVCEKIIPSCENETIERAKNEENTIYGGRKSSDRQEEMLNEEEISURENY | THE KASISKI TEST FINDS REPEATED SEQUENCES TO DETERMINE THE KEY LENGTH OF A VIGENERE CIPHER KEY | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 7
} | intermediate | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
two-square-v3-0189 | LAGGNUELGCNTOEOPOSEDTHCSWENNOULDACDFQHYACCORYNSMDFTHCSGGVLHGYWHITLWECAOMCPHEOGHOYHHOVKEHTHCSEQNNOULDBEDDHODSOHWRBUCKIMXSHIQGCSRCOREACKLAPEIGYHWRAOFIPFNGORCKDUCV | LAGGNUELGCNTOEOPOSEDTHCSWENNOULDACDFQHYACCORYNSMDFTHCSGGVLHGYWHITLWECAOMCPHEOGHOYHHOVKEHTHCSEQNNOULDBEDDHODSOHWRBUCKIMXSHIQGCSRCOREACKLAPEIGYHWRAOFIPFNGORCKDUCV | 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 | two_square | two_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
gronsfeld-v3-0414 | UKJTJOKFACBQUYXKHHAKSRZNQUWTNNUKJYCIHLYNBWJZCTFNLWULKPLNLSKBPIYONUZJUCJHYOLFQYBAZLSHABFJAXCXNSMUKJHCPPNJKPPGINGRWLWBCNNNSPFUHDRZSMERXVCIHJMOPUYJQBQLLMUKJDXSOIMXSHALA | UKJTJOKFACBQUYXKHHAKSRZNQUWTNNUKJYCIHLYNBWJZCTFNLWULKPLNLSKBPIYONUZJUCJHYOLFQYBAZLSHABFJAXCXNSMUKJHCPPNJKPPGINGRWLWBCNNNSPFUHDRZSMERXVCIHJMOPUYJQBQLLMUKJDXSOIMXSHALA | THE MANHATTAN PROJECT BROUGHT TOGETHER THE GREATEST SCIENTIFIC MINDS OF THE TWENTIETH CENTURY IN A RACE TO BUILD THE ATOMIC BOMB BEFORE NAZI GERMANY COULD DO SO THE EFFORT CHANGED THE WORLD FOREVER | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "13579"
} | intermediate | en | 165 | 165 | cipher_museum | 2.0 | public | null | null |
cda-0004609 | RIREL FLFGRZ ARRQF NA UBARFG GUERNG ZBQRY UVYY PVCURE HFRF YVARNE NYTROEN GB RAPELCG OYBPXF BS YRGGREF GUR IVTRARER PVCURE HFRF N ERCRNGVAT XRLJBEQ | RIREL FLFGRZ ARRQF NA UBARFG GUERNG ZBQRY UVYY PVCURE HFRF YVARNE NYTROEN GB RAPELCG OYBPXF BS YRGGREF GUR IVTRARER PVCURE HFRF N ERCRNGVAT XRLJBEQ | EVERY SYSTEM NEEDS AN HONEST THREAT MODEL HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS THE VIGENERE CIPHER USES A REPEATING KEYWORD | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 124 | 124 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
affine-v3-0816 | DWVVWM CPD NMXXGCP WPJMPRMD HALXWU OMK UZKHRYEZCHNK WP PWPMRMMP IMJMPRK IWB UNCPEWPE MJMZKRNWPE | DWVVWM CPD NMXXGCP WPJMPRMD HALXWU OMK UZKHRYEZCHNK WP PWPMRMMP IMJMPRK IWB UNCPEWPE MJMZKRNWPE | DIFFIE AND HELLMAN INVENTED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX CHANGING EVERYTHING | affine | affine | substitution | {
"a": 9,
"b": 2
} | beginner | en | 83 | 95 | cipher_museum | 2.0 | public | null | null |
voynich-render-012 | ykncdq pdu ycorhde | ykncdq pdu ycorhde | CIPHER KEY CHANGED | voynich_render | voynich_render | substitution | {
"type": "none",
"value": null
} | expert | en | 16 | 18 | cipher_museum | 0.2 | public | null | null |
caesar-la-082 | ZP CPZ WHJLT WHYH ILSSBT | ZP CPZ WHJLT WHYH ILSSBT | SI VIS PACEM PARA BELLUM | caesar | caesar | substitution | {
"type": "shift",
"value": 7
} | beginner | la | 20 | 24 | cipher_museum | 0.2 | public | null | null |
confederate-vigenere-182 | ATGXOKMIKG | ATGXOKMIKG | FLEE AT ONCE | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "VICTORY"
} | intermediate | en | 10 | 10 | cipher_museum | 0.2 | public | null | null |
cda-0010531 | TTRENNGORMSUNEOHTHIROEAXGDNAENVEUARAUOISTSUHRIMXHRETTTCOONHIVLLSYEEESGRXNBDTOIATEYMARSEMAERERENXENEXWTEPTLCIUTRCECUAESSXPEADRSNKLAEDTODXITTSSEEXETDIRNTSSSCXTHHRSMHIIOSX | TTRENNGORMSUNEOHTHIROEAXGDNAENVEUARAUOISTSUHRIMXHRETTTCOONHIVLLSYEEESGRXNBDTOIATEYMARSEMAERERENXENEXWTEPTLCIUTRCECUAESSXPEADRSNKLAEDTODXITTSSEEXETDIRNTSSSCXTHHRSMHIIOSX | TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION EVERY SYSTEM NEEDS AN HONEST THREAT MODEL A STRONG CLAIM NEEDS STRONG EVIDENCE THE ARCHITECTURE SHOULD MAKE MISUSE HARDER | double_transposition | double_transposition | null | {
"key1": "MUSEUM",
"key2": "PATTERN"
} | hard | en | 168 | 168 | synthetic_educational | null | null | [] | |
chaocipher-022 | MBKMNSAGLIVEAAASLR | MBKMNSAGLIVEAAASLR | AWAIT FURTHER ORDERS | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "CHAOCIPHER"
} | advanced | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
adfgx-v2-0077 | GDGFAAXFXXGDAFGGXXXXAADGGDFAFGAFFDDFGAFGFGFAAFDDDFGXAXGGFAXGGFDGGGFGFGXXFDXDDXGGFGFFGAGXGDDAAFADAFGAAAAAFFFGFDAAAFFFAFFFGGFAFGDFDFAAXGGFXDDAGADXFGFDXDFGDG | GDGFAAXFXXGDAFGGXXXXAADGGDFAFGAFFDDFGAFGFGFAAFDDDFGXAXGGFAXGGFDGGGFGFGXXFDXDDXGGFGFFGAGXGDDAAFADAFGAAAAAFFFGFDAAAFFFAFFFGGFAFGDFDFAAXGGFXDDAGADXFGFDXDFGDG | NAVAL UNITS IN POSITION OFF THE COAST AWAITING SIGNAL TO COMMENCE SHORE BOMBARDMENT AT DAWN | adfgx | adfgx | fractionation | {
"polybius": "PALACE",
"columnar": "BATTLE"
} | advanced | en | 154 | 154 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-v2-0273 | HEHAYDDFIRODXCINMCSMOHOBKTGHCRNDVIZHSMOHOBKTGHCVHTSELBOFIRSBMZLKKLHXVKCA | HEHAYDDFIRODXCINMCSMOHOBKTGHCRNDVIZHSMOHOBKTGHCVHTSELBOFIRSBMZLKKLHXVKCA | ASK WHAT YOU CAN DO FOR YOUR COUNTRY NOT WHAT YOUR COUNTRY CAN DO FOR YOU TODAY AND ALWAYS | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "1,3,5,2,4,6"
} | expert | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
vigenere-v3-1278 | PIPDHUKVOLHTKCLUSBNMKHBFWBARB | PIPDHUKVOLHTKCLUSBNMKHBFWBARB | TAXATION WITHOUT REPRESENTATION | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "WISDOM"
} | intermediate | en | 29 | 29 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v3-0171 | NIVZABJHYIXLRCHQUBJLEHEXTBWYQCSGEICUPWGLJIFVGPYHYMNPJCSEIMCATHNNZVIIQOHWP | NIVZABJHYIXLRCHQUBJLEHEXTBWYQCSGEICUPWGLJIFVGPYHYMNPJCSEIMCATHNNZVIIQOHWP | WATSON WE HAVE FOUND THE STRUCTURE OF DNA AND IT IS A DOUBLE HELIX OF BREATHTAKING BEAUTY | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "RICHMOND"
} | intermediate | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
cda-0003123 | SCOSRYSNNTAHLOEMEDAKTSTULECALECHITSDSRWLTITRIEERDDIURMBUUKXOERNEYXXCIPNAATNESITSTDISMFEGITXXSPRAIIINEEHY | SCOSRYSNNTAHLOEMEDAKTSTULECALECHITSDSRWLTITRIEERDDIURMBUUKXOERNEYXXCIPNAATNESITSTDISMFEGITXXSPRAIIINEEHY | SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT SLOWLY | stager_route | stager_route | null | {
"cols": 8
} | hard | en | 104 | 104 | synthetic_educational | null | null | [
"column_count_search",
"route_pattern_search"
] | Route (Stager) cipher: write into rectangle, read via alternating column route. |
enigma-v2-0706 | FCFOKDHDZAKDCZJBTMPIASGQCKOKQAFHWCRDIYCHCIYGQNRLDITJDBFHJKETTMEAOUSNXCYMRUVJC | FCFOKDHDZAKDCZJBTMPIASGQCKOKQAFHWCRDIYCHCIYGQNRLDITJDBFHJKETTMEAOUSNXCYMRUVJC | ALL UNITS PROCEED TO DESIGNATED RALLY POINTS AND AWAIT FURTHER ORDERS FROM HIGH COMMAND NOW | enigma | enigma | machine | {
"type": "rotor_start",
"value": "PQR"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
diana-v2-0682 | DQFPRCTDDSGPVERBSJEPJBSIBHINDBLPCLAJBBLNYNBCFFMOPFHNCUQWQCAFOLCFBEABYMFU | DQFPRCTDDSGPVERBSJEPJBSIBHINDBLPCLAJBBLNYNBCFFMOPFHNCUQWQCAFOLCFBEABYMFU | GENERAL GRANT HAS TAKEN VICKSBURG THE GREAT RIVER IS NOW OPEN FROM ITS SOURCE TO THE SEA | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
one-time-pad-v3-0162 | XQQZGRIZVJMSQNTANVWHDGIDRSQPLVKGHOFTLAHXUUYOCRLPVMPADPETMYHLVJMSQXUBAMPRFPOIRRYAPU | XQQZGRIZVJMSQNTANVWHDGIDRSQPLVKGHOFTLAHXUUYOCRLPVMPADPETMYHLVJMSQXUBAMPRFPOIRRYAPU | HUMINT OR HUMAN INTELLIGENCE GATHERING RELIES ON PERSONAL CONTACT AND HUMAN SOURCES IN THE FIELD | one_time_pad | one_time_pad | stream | {
"type": "pad",
"value": "QWERTY (repeating)"
} | expert | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
fialka-v3-0115 | NRIPUAKKWONIGFIPHRQ | NRIPUAKKWONIGFIPHRQ | AVE MARIA GRATIA PLENA | fialka | fialka | machine | {
"type": "seed",
"value": "KREMLIN"
} | expert | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
lorenz-v3-0423 | CHARHEOFTHELIGHTBRIGADEINTOTHEVALLEYOFDEATHROCETHESIXHUNDREDBRAVECAVALIERS | CHARHEOFTHELIGHTBRIGADEINTOTHEVALLEYOFDEATHROCETHESIXHUNDREDBRAVECAVALIERS | CHARGE OF THE LIGHT BRIGADE INTO THE VALLEY OF DEATH RODE THE SIX HUNDRED BRAVE CAVALIERS | lorenz | lorenz | machine | {
"type": "seed",
"value": "STURGEON"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0006147 | UBBR RRGQOGWBAOZ GBBYF SLCYOVA FVNVE YWAWGF | UBBR RRGQOGWBAOZ GBBYF SLCYOVA FVNVE YWAWGF | GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS | porta | porta | null | {
"key": "LIBRARY"
} | medium | en | 38 | 38 | synthetic_educational | null | null | [
"kasiski_examination",
"index_of_coincidence"
] | Porta: 13-row table polyalphabetic cipher; reciprocal (encrypt = decrypt). |
cda-0020507 | YEPM OLXB SVYM OWNB WMCW YQVV XLFI FHFH WPLX YXLQ TRLX RRUM HTR | YEPM OLXB SVYM OWNB WMCW YQVV XLFI FHFH WPLX YXLQ TRLX RRUM HTR | POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE | one_time_pad | one_time_pad | null | {} | medium | en | 51 | 51 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
cda-0013884 | 44 23 15 34 33 15 44 24 32 15 35 11 14 24 43 44 23 15 34 42 15 44 24 13 11 31 31 54 45 33 12 42 15 11 25 11 12 31 15 24 21 45 43 15 14 13 34 42 42 15 13 44 31 54 44 23 15 11 45 44 34 25 15 54 13 24 35 23 15 42 15 53 44 15 33 14 43 44 23 15 25 15 54 52 24 44 23 44 23 15 35 31 11 24 33 44 15 53 44 24 44 43 15 31 21 11 43... | 44 23 15 34 33 15 44 24 32 15 35 11 14 24 43 44 23 15 34 42 15 44 24 13 11 31 31 54 45 33 12 42 15 11 25 11 12 31 15 24 21 45 43 15 14 13 34 42 42 15 13 44 31 54 44 23 15 11 45 44 34 25 15 54 13 24 35 23 15 42 15 53 44 15 33 14 43 44 23 15 25 15 54 52 24 44 23 44 23 15 35 31 11 24 33 44 15 53 44 24 44 43 15 31 21 11 43... | THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES TOMORROW | polybius | polybius | null | {} | hard | en | 158 | 158 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
cda-0013810 | IVPDP CLKUH CFHGL ALXKY JWSLL OSVQK TEXBP PPTNL GEEHE KSXBC IXSWL JYNYT PCQBZ WYIMP VUAHO WRARL QSSCQ DZOLA DSTYI SKJLN HYTLK LEJLQ CAKQR EWQAL QGOLY NRVU | IVPDP CLKUH CFHGL ALXKY JWSLL OSVQK TEXBP PPTNL GEEHE KSXBC IXSWL JYNYT PCQBZ WYIMP VUAHO WRARL QSSCQ DZOLA DSTYI SKJLN HYTLK LEJLQ CAKQR EWQAL QGOLY NRVU | POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY THE ARCHITECTURE SHOULD MAKE MISUSE HARDER | running_key | running_key | null | {} | hard | en | 129 | 129 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
double-transposition-v2-0593 | TNEMLIEEAICBSNONETRSIILBHWBNOROYANNNZETAUGVPDTELBOASWAIUAASNSQHETATHTFSCSAEGEIIM | TNEMLIEEAICBSNONETRSIILBHWBNOROYANNNZETAUGVPDTELBOASWAIUAASNSQHETATHTFSCSAEGEIIM | THE BABINGTON PLOT TO ASSASSINATE QUEEN ELIZABETH WAS UNCOVERED BY FRANCIS WALSINGHAM IN TIME | double_transposition | double_transposition | transposition | {
"key1": "WISDOM",
"key2": "COURAGE"
} | advanced | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
alberti-disk-106 | GPZMAFLNTVLGBHXHMVSUYCGJZZWCQHWPQDWIWCFLMFLXVUNUAZUDKTBEE | GPZMAFLNTVLGBHXHMVSUYCGJZZWCQHWPQDWIWCFLMFLXVUNUAZUDKTBEE | FOUR SCORE AND SEVEN YEARS AGO OUR FATHERS BROUGHT FORTH THIS NATION | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 7
} | expert | en | 57 | 57 | cipher_museum | 0.2 | public | null | null |
cda-0005311 | TIGLR IKEWO MZUAQ XTVFV YDOXS REGWO GQALB QOQAH FHGLS KYXEM FDRVU HWYCV SNIHA EREEC QUCPO POTAS GV | TIGLR IKEWO MZUAQ XTVFV YDOXS REGWO GQALB QOQAH FHGLS KYXEM FDRVU HWYCV SNIHA EREEC QUCPO POTAS GV | THE INDEX OF COINCIDENCE IS A USEFUL CLUE THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES | trithemius | trithemius | null | {} | hard | en | 82 | 82 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
venona-pad-reuse-v2-0366 | WWEXND7CVBMS47GR4KGHMIFEV3GBWWA4HO5LUKQSFCUSKJH5LLFWEONINXDXE2BGAAHDDPXZTX35LUVAEIFDBAWKO4LB2HER4HFEAWVG7CZJEOW6WRXALD5BQAPIGCIRCELD6WCDAXDEWVHWQO7BDWDDFHEVBVHK | WWEXND7CVBMS47GR4KGHMIFEV3GBWWA4HO5LUKQSFCUSKJH5LLFWEONINXDXE2BGAAHDDPXZTX35LUVAEIFDBAWKO4LB2HER4HFEAWVG7CZJEOW6WRXALD5BQAPIGCIRCELD6WCDAXDEWVHWQO7BDWDDFHEVBVHK | 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 | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "FREEDOM"
} | expert | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v2-0385 | NAOTNLQNZVWDTB | NAOTNLQNZVWDTB | SIGNAL FIRES LIT | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "VENICE"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v2-0412 | IBJPMGFURGWGNZFLG | IBJPMGFURGWGNZFLG | NOVUS ORDO SECLORUM | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "VENICE"
} | advanced | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
affine-v3-1036 | TLLJWVBA PJWK SOHSHZBQ KIJK RB ZIHVAQ JFK HWAN JFFHOQTWX KH KIJK LJCTL UN RITFI RB FJW JK KIB ZJLB KTLB RTAA KIJK TK ZIHVAQ UBFHLB J VWTGBOZJA AJR KITZ FJKBXHOTFJA TLSBOJKTGB QBMTWBZ LHOJA QVKN | TLLJWVBA PJWK SOHSHZBQ KIJK RB ZIHVAQ JFK HWAN JFFHOQTWX KH KIJK LJCTL UN RITFI RB FJW JK KIB ZJLB KTLB RTAA KIJK TK ZIHVAQ UBFHLB J VWTGBOZJA AJR KITZ FJKBXHOTFJA TLSBOJKTGB QBMTWBZ LHOJA QVKN | 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 | affine | affine | substitution | {
"a": 11,
"b": 9
} | beginner | en | 160 | 193 | cipher_museum | 2.0 | public | null | null |
porta-v3-0436 | VJSYULFOQYVS | VJSYULFOQYVS | GOLD FROM LEAD | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "FLORENT"
} | intermediate | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
diana-v2-0467 | SBXDRSQYCIQEENXPIQRBGLQJWETFHSHANGUAACEQPFEMBMXGWXNXNNQXNDKEERQTMBTZLLFBBSJGFDWX | SBXDRSQYCIQEENXPIQRBGLQJWETFHSHANGUAACEQPFEMBMXGWXNXNNQXNDKEERQTMBTZLLFBBSJGFDWX | THE BABINGTON PLOT TO ASSASSINATE QUEEN ELIZABETH WAS UNCOVERED BY FRANCIS WALSINGHAM IN TIME | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "LIBERTY"
} | intermediate | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-160 | OAWZHLWQNONAHBGALFFECJLWSNQZAWZHLWYRZZVJMLIVRQHV | OAWZHLWQNONAHBGALFFECJLWSNQZAWZHLWYRZZVJMLIVRQHV | WE SHALL FIGHT ON THE BEACHES AND WE SHALL NEVER SURRENDER | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 48 | 48 | cipher_museum | 0.2 | public | null | null |
geez-monastic-109 | XKROKICKXXKROXFPXUTXFOLYOTXUKCEFOXFOIXUTCKRSOIUCXFOJUCQ | XKROKICKXXKROXFPXUTXFOLYOTXUKCEFOXFOIXUTCKRSOIUCXFOJUCQ | TO BE OR NOT TO BE THAT IS THE QUESTION WHETHER TIS NOBLER IN THE MIND | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 55 | 55 | cipher_museum | 0.2 | public | null | null |
cda-0014927 | 66 36 82 66 80 50 66 36 82 77 50 59 61 52 50 65 36 82 80 68 11 95 68 29 52 82 61 66 36 82 68 57 65 36 68 20 82 66 20 43 69 29 82 65 69 61 50 66 50 69 29 82 68 52 36 57 82 66 66 82 80 66 36 82 69 29 82 66 50 77 82 65 68 11 50 61 66 36 82 69 80 82 66 50 52 68 57 57 43 59 29 20 80 82 68 55 68 20 57 82 50 76 59 61 82 11 52... | 66 36 82 66 80 50 66 36 82 77 50 59 61 52 50 65 36 82 80 68 11 95 68 29 52 82 61 66 36 82 68 57 65 36 68 20 82 66 20 43 69 29 82 65 69 61 50 66 50 69 29 82 68 52 36 57 82 66 66 82 80 66 36 82 69 29 82 66 50 77 82 65 68 11 50 61 66 36 82 69 80 82 66 50 52 68 57 57 43 59 29 20 80 82 68 55 68 20 57 82 50 76 59 61 82 11 52... | THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY | wallis_cipher | wallis_cipher | null | {} | hard | en | 115 | 115 | 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-v2-0241 | POYXTNMYEYNXYWGYSYOMAPIYYIBIIYYPPMJHYIJXPTNTBAUYBUAEBFFFIBYSTHIBAPXGBIQYONYPYPTPTHJOBMYGTUTENQOOFIYNNITXBFYNTMYWXFYPTPPTNYDETIXWTFTSBTNIMJHMJOYEYAPHBKGYHJYMTKTCI | POYXTNMYEYNXYWGYSYOMAPIYYIBIIYYPPMJHYIJXPTNTBAUYBUAEBFFFIBYSTHIBAPXGBIQYONYPYPTPTHJOBMYGTUTENQOOFIYNNITXBFYNTMYWXFYPTPPTNYDETIXWTFTSBTNIMJHMJOYEYAPHBKGYHJYMTKTCI | 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 | bazeries | bazeries | transposition | {
"type": "integer",
"value": 23
} | advanced | en | 161 | 161 | cipher_museum | 2.0 | public | null | null |
typex-v2-0327 | AAHMYUTZBJEFVSBEBJLNIFTVWEBSYLQCLDSJPTNIBQYFZMVIRLECFTXIMNYIKSEGJEGUWYJVXDZRZ | AAHMYUTZBJEFVSBEBJLNIFTVWEBSYLQCLDSJPTNIBQYFZMVIRLECFTXIMNYIKSEGJEGUWYJVXDZRZ | THE REGIMENT SHALL ADVANCE AT FIRST LIGHT SUPPORTED BY ARTILLERY ON THE EASTERN FLANK TODAY | typex | typex | machine | {
"type": "keyword",
"value": "EMPIRE"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
playfair-v2-0305 | MBNPABFTLBXFMUTOBKSYNBLOLTKGABEFUZHCLTHMNEEFLKEMUQBTQDKGUTNIZBTEAGUZAL | MBNPABFTLBXFMUTOBKSYNBLOLTKGABEFUZHCLTHMNEEFLKEMUQBTQDKGUTNIZBTEAGUZAL | IT IS BETTER TO REMAIN SILENT AND BE THOUGHT A FOOL THAN TO SPEAK AND REMOVE ALL DOUBT | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "BATTLE"
} | intermediate | en | 70 | 70 | cipher_museum | 2.0 | public | null | null |
sigaba-v2-0378 | ZKZXJIXXNQIWGDZSGGEZZXDPNNUEZUXUXZHFEDYRRBFFJEOKSVPDGFORDJWUOJAHJXMJYLEEOXFPISRGGDGZTHBDFJCHBONNSSIOPBZAWXHXMJSFYANRNPTMWLTIUNKRPXECJRWDJHQOMNGMWQNQZRTPBBHZQFEZXAYBEXZIQBIZAFYBRCJ | ZKZXJIXXNQIWGDZSGGEZZXDPNNUEZUXUXZHFEDYRRBFFJEOKSVPDGFORDJWUOJAHJXMJYLEEOXFPISRGGDGZTHBDFJCHBONNSSIOPBZAWXHXMJSFYANRNPTMWLTIUNKRPXECJRWDJHQOMNGMWQNQZRTPBBHZQFEZXAYBEXZIQBIZAFYBRCJ | 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 | sigaba | sigaba | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 179 | 179 | cipher_museum | 2.0 | public | null | null |
cda-0017286 | 6365 02598 1636 5673 00335 2875 3805 01957 01646 4441 1015 01576 01035 02845 05102 02605 01575 05683 7227 05691 2881 06328 01647 6009 6354 01666 7632 6328 2901 04398 0409 8251 2831 02277 08219 0362 02223 5060 0371 06283 6371 01657 5679 4398 04095 04751 01292 1601 5690 4482 01570 04435 0962 05701 7944 05028 6310 02846 4... | 6365 02598 1636 5673 00335 2875 3805 01957 01646 4441 1015 01576 01035 02845 05102 02605 01575 05683 7227 05691 2881 06328 01647 6009 6354 01666 7632 6328 2901 04398 0409 8251 2831 02277 08219 0362 02223 5060 0371 06283 6371 01657 5679 4398 04095 04751 01292 1601 5690 4482 01570 04435 0962 05701 7944 05028 6310 02846 4... | THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM | zimmermann | zimmermann | null | {} | hard | en | 194 | 194 | synthetic_educational | null | null | [
"codebook_frequency",
"number_group_analysis"
] | Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher. |
cda-0012503 | LIN / NO-DA-IH / NA-AS-TSO-SI / WOL-LA-CHEE / TSAH / GAH / DZEH / WOL-LA-CHEE / BE / WOL-LA-CHEE / SHUSH / DIBEH-YAZZIE / DZEH / A-KHA / NO-DA-IH / THAN-ZIE / CLA-GI-AIH / NO-DA-IH / THAN-ZIE / DIBEH / LIN / A-KHA / NO-DA-IH / D... | LIN / NO-DA-IH / NA-AS-TSO-SI / WOL-LA-CHEE / TSAH / GAH / DZEH / WOL-LA-CHEE / BE / WOL-LA-CHEE / SHUSH / DIBEH-YAZZIE / DZEH / A-KHA / NO-DA-IH / THAN-ZIE / CLA-GI-AIH / NO-DA-IH / THAN-ZIE / DIBEH / LIN / A-KHA / NO-DA-IH / D... | HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | navajo_code | navajo_code | null | {} | hard | en | 233 | 233 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
vic-v2-0062 | 9108021897839085959008087080897839004228619134869108085484809108580283807138683868289808086874909192898090595909183223491808990 | 9108021897839085959008087080897839004228619134869108085484809108580283807138683868289808086874909192898090595909183223491808990 | THE LORD IS MY SHEPHERD I SHALL NOT WANT HE MAKETH ME LIE DOWN IN GREEN PASTURES BY STILL WATERS | vic | vic | substitution | {
"type": "keyword",
"value": "HOLLOW"
} | advanced | en | 127 | 127 | cipher_museum | 2.0 | public | null | null |
stager-route-343 | TBJRDHEOTURHEOMHGRINEPWQUNSLEVEAAOFICOVZRRXTYEXK | TBJRDHEOTURHEOMHGRINEPWQUNSLEVEAAOFICOVZRRXTYEXK | THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG NEAR THE RIVER | stager_route | stager_route | transposition | {
"type": "integer",
"value": 8
} | expert | en | 48 | 48 | cipher_museum | 0.2 | public | null | null |
cda-0003539 | AUDDW MKUKX NPEOM GUMWK MDJDR GEBNS LFHLB NFPDL GNIKW FHZAA QZNIQ QIXZA PAOLF ZCSUC XKCZZ JYMET VLQFZ LLTOJ XRBVJ YXKIH OQYSI TVLGX GZBAY YSPZP YDFXY YOPRQ OOIHZ NJLVL OYQIS G | AUDDW MKUKX NPEOM GUMWK MDJDR GEBNS LFHLB NFPDL GNIKW FHZAA QZNIQ QIXZA PAOLF ZCSUC XKCZZ JYMET VLQFZ LLTOJ XRBVJ YXKIH OQYSI TVLGX GZBAY YSPZP YDFXY YOPRQ OOIHZ NJLVL OYQIS G | ATBASH ENCODES BY REVERSING THE ALPHABET EVERY SYSTEM NEEDS AN HONEST THREAT MODEL FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS A STRONG CLAIM NEEDS STRONG EVIDENCE NEVER | trithemius | trithemius | null | {} | hard | en | 146 | 146 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
playfair-fr-025 | XHUYHCMFDPDOXHUYHCDKNVCIQXED | XHUYHCMFDPDOXHUYHCDKNVCIQXED | VIVE LA FRANCE VIVE LA REPUBLIQUE | playfair | playfair | substitution | {
"type": "keyword",
"value": "KEYWORD"
} | intermediate | fr | 28 | 28 | cipher_museum | 0.2 | public | null | null |
cda-0013860 | 20 8 5 6 18 9 5 4 13 1 14 20 5 19 20 21 19 5 19 20 8 5 9 14 4 5 24 15 6 3 15 9 14 3 9 4 5 14 3 5 20 15 5 19 20 9 13 1 20 5 11 5 25 12 5 14 7 20 8 6 18 5 17 21 5 14 3 25 1 14 1 12 25 19 9 19 3 1 14 18 5 22 5 1 12 23 5 1 11 3 9 16 8 5 18 19 2 5 1 21 6 15 18 20 9 19 20 8 5 18 5 3 9 16 18 15 3 1 12 15 6 22 9 7 5 14 5 18 5 ... | 20 8 5 6 18 9 5 4 13 1 14 20 5 19 20 21 19 5 19 20 8 5 9 14 4 5 24 15 6 3 15 9 14 3 9 4 5 14 3 5 20 15 5 19 20 9 13 1 20 5 11 5 25 12 5 14 7 20 8 6 18 5 17 21 5 14 3 25 1 14 1 12 25 19 9 19 3 1 14 18 5 22 5 1 12 23 5 1 11 3 9 16 8 5 18 19 2 5 1 21 6 15 18 20 9 19 20 8 5 18 5 3 9 16 18 15 3 1 12 15 6 22 9 7 5 14 5 18 5 ... | THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF ALWAYS | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 152 | 152 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
fractionated-morse-v2-0012 | NLPSDFNJBIFCWQOKTLLPSLFL | NLPSDFNJBIFCWQOKTLLPSLFL | MISSION ACCOMPLISHED | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v3-0155 | WTC YCXMU MHZLYJLM HQ X RLEECT TCCM XQM UCYYR H OCSEM QCW WYXZLE PCWI XQM PL CQL WYXZLELY | WTC YCXMU MHZLYJLM HQ X RLEECT TCCM XQM UCYYR H OCSEM QCW WYXZLE PCWI XQM PL CQL WYXZLELY | TWO ROADS DIVERGED IN A YELLOW WOOD AND SORRY I COULD NOT TRAVEL BOTH AND BE ONE TRAVELER | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "VATSYANA"
} | intermediate | en | 72 | 89 | cipher_museum | 2.0 | public | null | null |
enigma-v2-0776 | YCMVPJHHNUJNVYNUVXAYQY | YCMVPJHHNUJNVYNUVXAYQY | EXTRACTION POINT CHANGED | enigma | enigma | machine | {
"type": "rotor_start",
"value": "STU"
} | expert | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
cda-0016632 | X L r X· ┌· Γ· K ⌒· r └ ⌐ Γ· ┌ X X r· ┘· X· └ Γ ¬ L K L X K L Γ X· ─ Γ L ┌· X r ┌· X· K Γ· ─ ⌒· | X L r X· ┌· Γ· K ⌒· r └ ⌐ Γ· ┌ X X r· ┘· X· └ Γ ¬ L K L X K L Γ X· ─ Γ L ┌· X r ┌· X· K Γ· ─ ⌒· | SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY | pigpen | pigpen | null | {} | easy | en | 22 | 22 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
cda-0015764 | 11.6.4 14.25.1 19.28.7 1.33.1 2.14.15 13.38.2 2.34.11 7.14.11 1.14.10 11.35.13 10.4.5 3.23.12 19.47.1 2.11.12 8.45.10 17.1.8 6.23.3 12.37.9 4.49.6 13.4.9 5.31.8 6.2.7 17.41.3 18.46.10 15.30.7 10.34.10 16.6.2 16.22.8 8.50.4 6.10.10 6.13.10 16.43.7 13.48.4 20.28.3 16.16.4 10.5.12 17.16.9 8.13.6 18.17.9 11.11.1 15.48.5 4.... | 11.6.4 14.25.1 19.28.7 1.33.1 2.14.15 13.38.2 2.34.11 7.14.11 1.14.10 11.35.13 10.4.5 3.23.12 19.47.1 2.11.12 8.45.10 17.1.8 6.23.3 12.37.9 4.49.6 13.4.9 5.31.8 6.2.7 17.41.3 18.46.10 15.30.7 10.34.10 16.6.2 16.22.8 8.50.4 6.10.10 6.13.10 16.43.7 13.48.4 20.28.3 16.16.4 10.5.12 17.16.9 8.13.6 18.17.9 11.11.1 15.48.5 4.... | OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH | book_cipher | book_cipher | null | {} | hard | en | 87 | 87 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
cda-0018637 | 25 94 22 1 32 60 45 80 23 92 87 93 63 88 48 58 23 53 25 23 15 62 43 68 17 33 80 33 92 78 66 60 17 91 17 33 63 39 82 66 81 25 33 53 60 93 91 43 48 96 46 43 32 67 11 60 93 68 14 68 66 72 15 35 66 63 17 23 3 50 40 1 63 23 82 21 88 39 33 25 68 23 34 25 72 2 52 59 46 46 33 3 33 81 91 30 23 91 60 23 58 68 17 23 79 93 57 33 8... | 25 94 22 1 32 60 45 80 23 92 87 93 63 88 48 58 23 53 25 23 15 62 43 68 17 33 80 33 92 78 66 60 17 91 17 33 63 39 82 66 81 25 33 53 60 93 91 43 48 96 46 43 32 67 11 60 93 68 14 68 66 72 15 35 66 63 17 23 3 50 40 1 63 23 82 21 88 39 33 25 68 23 34 25 72 2 52 59 46 46 33 3 33 81 91 30 23 91 60 23 58 68 17 23 79 93 57 33 8... | THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER THE VIGENERE CIPHER USES A REPEATING KEYWORD EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | homophonic | homophonic | null | {} | hard | en | 174 | 174 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
homophonic-v3-0010 | 95 45 38 72 85 10 19 58 31 45 10 91 93 80 72 57 29 70 | 95 45 38 72 85 10 19 58 31 45 10 91 93 80 72 57 29 70 | THE ORACLE HAS SPOKEN | homophonic | homophonic | substitution | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 36 | 53 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v2-0135 | YALLHRSPFZAUNPER | YALLHRSPFZAUNPER | THE HARBOR IS CLEAR | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "FLORENCE"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
adfgvx-v2-0092 | AXAGDFGVDVVAVXDVVDDGAVFVGFVFGFDGFAAADGAFGAADFDDAAAFDFVVVGGAGGDVGDGGFDGVFFAFDVDGDDDFDGFAGDFGADDGFAFFVFGDGFFGFVAFGAAGGGAGAFFADAFDGFDGDAFAGGDGADDXDDDFXXVVDVAFG | AXAGDFGVDVVAVXDVVDDGAVFVGFVFGFDGFAAADGAFGAADFDDAAAFDFVVVGGAGGDVGDGGFDGVFFAFDVDGDDDFDGFAGDFGADDGFAFFVFGDGFFGFVAFGAAGGGAGAFFADAFDGFDGDAFAGGDGADDXDDDFXXVVDVAFG | YOUR MISSION IF YOU CHOOSE TO ACCEPT IT IS TO EXTRACT THE AGENT FROM BEHIND ENEMY LINES TONIGHT | adfgvx | adfgvx | fractionation | {
"polybius": "PALACE",
"columnar": "BATTLE"
} | advanced | en | 156 | 156 | cipher_museum | 2.0 | public | null | null |
nihilist-v3-0147 | 56 57 55 56 46 74 77 63 29 55 35 36 56 47 72 36 56 35 58 65 56 63 57 56 39 66 54 67 64 36 56 25 50 65 67 45 60 47 56 76 53 60 44 66 29 55 48 83 60 46 38 66 28 48 63 59 42 57 59 28 67 73 60 54 37 29 37 57 56 50 54 47 28 | 56 57 55 56 46 74 77 63 29 55 35 36 56 47 72 36 56 35 58 65 56 63 57 56 39 66 54 67 64 36 56 25 50 65 67 45 60 47 56 76 53 60 44 66 29 55 48 83 60 46 38 66 28 48 63 59 42 57 59 28 67 73 60 54 37 29 37 57 56 50 54 47 28 | DO NOT GO GENTLE INTO THAT GOOD NIGHT OLD AGE SHOULD BURN AND RAVE AT CLOSE OF DAY RAGE RAGE | nihilist | nihilist | fractionation | {
"polybius": "LIBERTY",
"keyword": "FREEDOM"
} | advanced | en | 146 | 218 | cipher_museum | 2.0 | public | null | null |
cda-0013338 | 68 66 80 68 29 61 65 68 80 82 29 66 66 69 69 57 61 36 69 59 57 11 61 36 69 89 50 66 61 80 82 68 61 69 29 50 29 25 36 50 57 57 52 50 65 36 82 80 59 61 82 61 57 50 29 82 68 80 68 57 25 82 20 80 68 66 69 82 29 52 80 43 65 66 20 57 69 52 55 61 69 76 57 82 66 66 82 80 61 66 36 82 20 82 61 66 57 82 61 61 69 29 61 61 36 69 89... | 68 66 80 68 29 61 65 68 80 82 29 66 66 69 69 57 61 36 69 59 57 11 61 36 69 89 50 66 61 80 82 68 61 69 29 50 29 25 36 50 57 57 52 50 65 36 82 80 59 61 82 61 57 50 29 82 68 80 68 57 25 82 20 80 68 66 69 82 29 52 80 43 65 66 20 57 69 52 55 61 69 76 57 82 66 66 82 80 61 66 36 82 20 82 61 66 57 82 61 61 69 29 61 61 36 69 89... | A TRANSPARENT TOOL SHOULD SHOW ITS REASONING HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS THE BEST LESSONS SHOW WHERE THE METHOD FAILS | wallis_cipher | wallis_cipher | null | {} | hard | en | 126 | 126 | 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-028 | SYRFFQYPBPOYNFY | SYRFFQYPBPOYNFY | EVACUATE THE BASE | bazeries | bazeries | transposition | {
"type": "integer",
"value": 42
} | advanced | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
caesar-v3-0697 | LVOCCON KBO DRO WOOU PYB DROI CRKVV SXROBSD DRO OKBDR KXN DRO ZOKMOWKUOBC CRKVV LO MKVVON CYXC | LVOCCON KBO DRO WOOU PYB DROI CRKVV SXROBSD DRO OKBDR KXN DRO ZOKMOWKUOBC CRKVV LO MKVVON CYXC | BLESSED ARE THE MEEK FOR THEY SHALL INHERIT THE EARTH AND THE PEACEMAKERS SHALL BE CALLED SONS | caesar | caesar | substitution | {
"type": "shift",
"value": 10
} | beginner | en | 78 | 94 | cipher_museum | 2.0 | public | null | null |
stager-route-v2-0053 | EEDWSLFFINUIRBAMSNERORUYRLGXLMHRDVEMYPIGGAESXXIDSCENOFORGTACTGXXHHOVTTTRCEOYANETX | EEDWSLFFINUIRBAMSNERORUYRLGXLMHRDVEMYPIGGAESXXIDSCENOFORGTACTGXXHHOVTTTRCEOYANETX | ENEMY FORCES REPORTED MOVING TOWARD GETTYSBURG CAVALRY HAS CONFIRMED THE FULL SIGHTING | stager_route | stager_route | transposition | {
"type": "integer",
"value": 9
} | expert | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
slidex-071 | SVLZHXZAKFLZMD | SVLZHXZAKFLZMD | CHANGE OF PLANS | slidex | slidex | transposition | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 14 | 14 | cipher_museum | 0.2 | public | null | null |
straddling-checkerboard-v3-0081 | 42512952812172681222211708342518341282882413912024139767020001227384202801961404542515425160822123567612060 | 42512952812172681222211708342518341282882413912024139767020001227384202801961404542515425160822123567612060 | THE MOLE BURIED DEEP IN THE INTELLIGENCE AGENCY PASSED VITAL SECRETS TO THE OTHER SIDE FOR YEARS | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "SENTORISCA"
} | advanced | en | 107 | 107 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v2-0393 | VBPFKTNQZEBAKURW | VBPFKTNQZEBAKURW | ABORT AND WITHDRAW | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "VENICE"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
great-cipher-v2-0216 | 122 136 175 179 137 135 177 107 167 124 114 116 117 114 161 160 131 118 155 143 181 119 143 149 110 112 136 155 136 169 168 138 155 136 171 117 110 136 114 179 161 176 102 170 177 116 181 119 154 175 173 159 131 138 155 162 138 138 109 | 122 136 175 179 137 135 177 107 167 124 114 116 117 114 161 160 131 118 155 143 181 119 143 149 110 112 136 155 136 169 168 138 155 136 171 117 110 136 114 179 161 176 102 170 177 116 181 119 154 175 173 159 131 138 155 162 138 138 109 | MARY QUEEN OF SCOTS WAS BEHEADED AFTER HER CIPHER LETTERS WERE DECODED BY THOMAS PHELIPPES | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "ROSSIGNOL"
} | expert | en | 177 | 235 | cipher_museum | 2.0 | public | null | null |
cda-0010408 | DEDLIIIEUULPNPHSDWTSNCITTEEASSBIHUIENIETRLPSTAEURBCNAORHANORNTLEIXARCYSDATAEOOALLEAXBTTTYOSHNLHROMTIOEMOSSTIIRTSFPGTYAOIONIEYE | DEDLIIIEUULPNPHSDWTSNCITTEEASSBIHUIENIETRLPSTAEURBCNAORHANORNTLEIXARCYSDATAEOOALLEAXBTTTYOSHNLHROMTIOEMOSSTIIRTSFPGTYAOIONIEYE | CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS SLOWLY | double_transposition | double_transposition | null | {
"key1": "CIPHER",
"key2": "DRAGON"
} | hard | en | 126 | 126 | synthetic_educational | null | null | [] | |
cda-0020414 | DZEH / GAH / GAH / A-KHA / GAH / MOASI / A-KHA / GAH / GAH / DZEH / MOASI / THAN-ZIE / TKIN / A-KHA / TSAH / WOL-LA-CHEE / TSAH / BE / BE / DZEH / THAN-ZIE / DZEH / MOASI / THAN-ZIE / TKIN / A-KHA / TSAH / WOL-LA... | DZEH / GAH / GAH / A-KHA / GAH / MOASI / A-KHA / GAH / GAH / DZEH / MOASI / THAN-ZIE / TKIN / A-KHA / TSAH / WOL-LA-CHEE / TSAH / BE / BE / DZEH / THAN-ZIE / DZEH / MOASI / THAN-ZIE / TKIN / A-KHA / TSAH / WOL-LA... | ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS | navajo_code | navajo_code | null | {} | hard | en | 189 | 189 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
geez-monastic-v2-0321 | VYIMHNVYWGJAYJDFUAQMWQLSFJPMJNVYAMQMASMWKWYASMWQLVBMQGWYLWTHWJYUBVPHGMVCPVQM | VYIMHNVYWGJAYJDFUAQMWQLSFJPMJNVYAMQMASMWKWYASMWQLVBMQGWYLWTHWJYUBVPHGMVCPVQM | ONCE UPON A MIDNIGHT DREARY WHILE I PONDERED WEAK AND WEARY OVER MANY A QUAINT VOLUME OF LORE | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "LALIBELA"
} | advanced | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
rail-fence-la-011 | EBETURTTU | EBETURTTU | ET TU BRUTE | rail_fence | rail_fence | transposition | {
"type": "shift",
"value": 3
} | intermediate | la | 9 | 9 | cipher_museum | 0.2 | public | null | null |
cda-0019002 | -.. --- ..- -... .-.. . / - .-. .- -. ... .--. --- ... .. - .. --- -. / .- .--. .--. .-.. .. . ... / -.-. --- .-.. ..- -- -. .- .-. / . -. -.-. .-. -.-- .--. - .. --- -. / - .-- .. -.-. . / .... ..- -- .- -. / .-. . .- -.. .- -... .-.. . / --- ..- - .--. ..- - / ... .... --- ..- .-.. -.. / ... .... --- .-- / .- .-.. .-... | -.. --- ..- -... .-.. . / - .-. .- -. ... .--. --- ... .. - .. --- -. / .- .--. .--. .-.. .. . ... / -.-. --- .-.. ..- -- -. .- .-. / . -. -.-. .-. -.-- .--. - .. --- -. / - .-- .. -.-. . / .... ..- -- .- -. / .-. . .- -.. .- -... .-.. . / --- ..- - .--. ..- - / ... .... --- ..- .-.. -.. / ... .... --- .-- / .- .-.. .-... | DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH | morse_code | morse_code | null | {} | hard | en | 154 | 154 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
cda-0019697 | 91 94 48 22 70 93 57 40 27 4 27 35 17 49 15 48 32 50 22 64 3 26 25 26 3 43 60 26 87 58 33 2 68 22 1 63 26 30 41 2 30 63 94 2 67 48 68 93 87 87 66 63 17 33 58 | 91 94 48 22 70 93 57 40 27 4 27 35 17 49 15 48 32 50 22 64 3 26 25 26 3 43 60 26 87 58 33 2 68 22 1 63 26 30 41 2 30 63 94 2 67 48 68 93 87 87 66 63 17 33 58 | THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER | homophonic | homophonic | null | {} | medium | en | 55 | 55 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
cda-0010712 | EWGU CXEZ BNWY QRRH QEZH HZOQ RGRF CWQT JLTC RPHV UTDV JXWD LECQ UTGV EWKW MJDT ZTYT ONGK XODB IZSJ UNMJ DHUR XLFV CCVZ FWMM AMCZ TFFW VNMY IVCT ZPWE XVJM YSP | EWGU CXEZ BNWY QRRH QEZH HZOQ RGRF CWQT JLTC RPHV UTDV JXWD LECQ UTGV EWKW MJDT ZTYT ONGK XODB IZSJ UNMJ DHUR XLFV CCVZ FWMM AMCZ TFFW VNMY IVCT ZPWE XVJM YSP | EVERY SYSTEM NEEDS AN HONEST THREAT MODEL THE VIGENERE CIPHER USES A REPEATING KEYWORD THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT | trithemius | trithemius | null | {} | hard | en | 127 | 127 | synthetic_educational | null | null | [] | |
monoalphabetic-v3-0916 | JK MRPQKJ QDVHH AR DRHO SK VJQWRP BKP V LVMESVH LPEIR TJHRQQ KJ MPRQRJSIRJS KB V CPVJO FTPY | JK MRPQKJ QDVHH AR DRHO SK VJQWRP BKP V LVMESVH LPEIR TJHRQQ KJ MPRQRJSIRJS KB V CPVJO FTPY | NO PERSON SHALL BE HELD TO ANSWER FOR A CAPITAL CRIME UNLESS ON PRESENTMENT OF A GRAND JURY | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "VALOR"
} | beginner | en | 74 | 91 | cipher_museum | 2.0 | public | null | null |
affine-v3-1037 | TW KIB ZBGBWKBBWKI FBWKVON TZJJF WBRKHW ZNWKIBZTYBQ KIB RHOP HM FHSBOWTFVZ XJATABH JWQ PBSABO TWKH J VWTMTBQ KIBHON HM XOJGTKJKTHW KIJK BCSAJTWBQ UHKI KIB MJAA HM JSSABZ JWQ KIB HOUTKZ HM SAJWBKZ | TW KIB ZBGBWKBBWKI FBWKVON TZJJF WBRKHW ZNWKIBZTYBQ KIB RHOP HM FHSBOWTFVZ XJATABH JWQ PBSABO TWKH J VWTMTBQ KIBHON HM XOJGTKJKTHW KIJK BCSAJTWBQ UHKI KIB MJAA HM JSSABZ JWQ KIB HOUTKZ HM SAJWBKZ | 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 | affine | affine | substitution | {
"a": 11,
"b": 9
} | beginner | en | 164 | 195 | cipher_museum | 2.0 | public | null | null |
cda-0002965 | TIG DYYURMH MTBUSG UOLXHYO QFD KFA ZMYN APN ZWMVBIUOL BNNAID SOECB | TIG DYYURMH MTBUSG UOLXHYO QFD KFA ZMYN APN ZWMVBIUOL BNNAID SOECB | THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF TODAY | trithemius | trithemius | null | {} | medium | en | 56 | 56 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
porta-v2-0706 | UYSHIPGLCMHPYRVMBXRAPTGNBYQKNQSLIBNGGLNIXNCNNMSAEBORKBMXRKFXKBTUNNUWBRTNGQIHJ | UYSHIPGLCMHPYRVMBXRAPTGNBYQKNQSLIBNGGLNIXNCNNMSAEBORKBMXRKFXKBTUNNUWBRTNGQIHJ | ALL UNITS PROCEED TO DESIGNATED RALLY POINTS AND AWAIT FURTHER ORDERS FROM HIGH COMMAND NOW | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "PAPAL"
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
rot13-006 | CEBPRRQ NF CYNAARQ | CEBPRRQ NF CYNAARQ | PROCEED AS PLANNED | rot13 | rot13 | substitution | {
"type": "none",
"value": null
} | beginner | en | 16 | 18 | cipher_museum | 0.2 | public | null | null |
jn25-v2-0053 | 26184 26193 26184 26192 26104 26185 26194 26197 26182 26184 26198 26197 26184 26195 26194 26197 26199 26184 26183 26192 26194 26101 26188 26193 26186 26199 26194 26102 26180 26197 26183 26186 26184 26199 26199 26104 26198 26181 26100 26197 26186 26182 26180 26101 26180 26191 26197 26104 26187 26180 26198 26182 26194 26... | 26184 26193 26184 26192 26104 26185 26194 26197 26182 26184 26198 26197 26184 26195 26194 26197 26199 26184 26183 26192 26194 26101 26188 26193 26186 26199 26194 26102 26180 26197 26183 26186 26184 26199 26199 26104 26198 26181 26100 26197 26186 26182 26180 26101 26180 26191 26197 26104 26187 26180 26198 26182 26194 26... | ENEMY FORCES REPORTED MOVING TOWARD GETTYSBURG CAVALRY HAS CONFIRMED THE FULL SIGHTING | jn25 | jn25 | codebook | {
"type": "additive",
"value": "16180"
} | expert | en | 375 | 449 | cipher_museum | 2.0 | public | null | null |
cda-0012421 | BE / TKIN / AH-JAH / GAH / WOL-LA-CHEE / CLA-GI-AIH / LIN / WOL-LA-CHEE / TSAH / BE / THAN-ZIE / GAH / TKIN / AH-JAH / GAH / WOL-LA-CHEE / CLA-GI-AIH / LIN / MA-E / GAH / DZEH / CA-YEILTH / NO-DA-IH / DZEH / TSAH / MOASI... | BE / TKIN / AH-JAH / GAH / WOL-LA-CHEE / CLA-GI-AIH / LIN / WOL-LA-CHEE / TSAH / BE / THAN-ZIE / GAH / TKIN / AH-JAH / GAH / WOL-LA-CHEE / CLA-GI-AIH / LIN / MA-E / GAH / DZEH / CA-YEILTH / NO-DA-IH / DZEH / TSAH / MOASI... | DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS FAIL CLOSED IS A POSTURE NOT A SLOGAN A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS | navajo_code | navajo_code | null | {} | hard | en | 213 | 213 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
cda-0018560 | L ┌· ┌· ┘· ┌· r ┘· ┌· ┌· L r K Γ· ┘· ─ ⌐ ─ Γ Γ L K L r K Γ· ┘· ─ ⌐ ┌· L ⌐· X· ─ Γ ⌐ ┌ L ─ K ⌐ └ K ┘· X L r X· ┌· L X ⌒· X K L ┌ X r ┌· ⌒· ┐· K ┘· ¬· ┌· ⌐ ┐· r· ⌒· ┌· L ⌒ ⌐ ┌· Γ X ┐· ⌐ K Γ· L ─ r L ⌐ ─ Γ r ⌐ ┌· L ⌐· X· └ K r· Γ· ─ ┐ Γ· ─ ¬· | L ┌· ┌· ┘· ┌· r ┘· ┌· ┌· L r K Γ· ┘· ─ ⌐ ─ Γ Γ L K L r K Γ· ┘· ─ ⌐ ┌· L ⌐· X· ─ Γ ⌐ ┌ L ─ K ⌐ └ K ┘· X L r X· ┌· L X ⌒· X K L ┌ X r ┌· ⌒· ┐· K ┘· ¬· ┌· ⌐ ┐· r· ⌒· ┌· L ⌒ ⌐ ┌· Γ X ┐· ⌐ K Γ· L ─ r L ⌐ ─ Γ r ⌐ ┌· L ⌐· X· └ K r· Γ· ─ ┐ Γ· ─ ¬· | ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING | pigpen | pigpen | null | {} | medium | en | 39 | 39 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
cda-0022119 | NLWV IMVM XIBK GRLM RHML GYIL PVMY BOVG GVIU IVJF VMXB YIFG VULI XVDL IPHL MOBD SVMG SVPV BHKZ XVRH HNZO OVEV IBHB HGVN MVVW HZMS LMVH GGSI VZGN LWVO XZIV UFOO B | NLWV IMVM XIBK GRLM RHML GYIL PVMY BOVG GVIU IVJF VMXB YIFG VULI XVDL IPHL MOBD SVMG SVPV BHKZ XVRH HNZO OVEV IBHB HGVN MVVW HZMS LMVH GGSI VZGN LWVO XZIV UFOO B | MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL EVERY SYSTEM NEEDS AN HONEST THREAT MODEL CAREFULLY | atbash | atbash | null | {} | hard | en | 129 | 129 | synthetic_educational | null | null | [
"self_inverse_check",
"frequency_analysis"
] | Atbash maps A↔Z, B↔Y, … and is its own inverse. |
affine-v2-1460 | IVNJSSJLQVI QUV VSVBX AJZLQLJS FSE IVAJIQ WFNT WVMJIV SLDUQMFKK PLQU F MHKK ZQIVSDQU NJHSQ | IVNJSSJLQVI QUV VSVBX AJZLQLJS FSE IVAJIQ WFNT WVMJIV SLDUQMFKK PLQU F MHKK ZQIVSDQU NJHSQ | RECONNOITER THE ENEMY POSITION AND REPORT BACK BEFORE NIGHTFALL WITH A FULL STRENGTH COUNT | affine | affine | substitution | {
"a": 17,
"b": 5
} | beginner | en | 77 | 90 | cipher_museum | 2.0 | public | null | null |
cda-0003837 | GUR ZRFFNTR JNF UVQQRA OHG ABG FRPHER N ZBQRY PNA PYNFFVSL CNGGREAF OHG VG PNA NYFB OR JEBAT PBYHZANE GENAFCBFVGVBA ERNQF PBYHZAF VA XRL BEQRE CRRE ERIVRJ NAQ ERCEBQHPVOVYVGL ZNGGRE VA ERFRNEPU | GUR ZRFFNTR JNF UVQQRA OHG ABG FRPHER N ZBQRY PNA PYNFFVSL CNGGREAF OHG VG PNA NYFB OR JEBAT PBYHZANE GENAFCBFVGVBA ERNQF PBYHZAF VA XRL BEQRE CRRE ERIVRJ NAQ ERCEBQHPVOVYVGL ZNGGRE VA ERFRNEPU | THE MESSAGE WAS HIDDEN BUT NOT SECURE A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 162 | 162 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
columnar-transposition-v2-0310 | ETLMFACBNFVSNNEUNWUDAOALIIHOTMEMSRURFFCCOWOOBOVHDALSHYYEEEEONISOSTWS | ETLMFACBNFVSNNEUNWUDAOALIIHOTMEMSRURFFCCOWOOBOVHDALSHYYEEEEONISOSTWS | NEVER IN THE FIELD OF HUMAN CONFLICT WAS SO MUCH OWED BY SO MANY TO SO FEW BRAVE SOULS | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "BATTLE"
} | intermediate | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
vigenere-v2-0680 | ZVIQQMXAAABRHEBNBGSEIMPHTLWJNJBFZIVMZIEUSNMOUGLWYTSFFDCXHVXALKYMACYOQFKYIJ | ZVIQQMXAAABRHEBNBGSEIMPHTLWJNJBFZIVMZIEUSNMOUGLWYTSFFDCXHVXALKYMACYOQFKYIJ | GOOD NIGHT GOOD NIGHT PARTING IS SUCH SWEET SORROW THAT I SHALL SAY GOOD NIGHT TILL MORROW | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "THUNDER"
} | intermediate | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
kl7-v3-0079 | TWOJJFRWPBAOGROGPYWCXXRFVSISGEYPNICBJHQFSSVIXXYMSPEKORAPPHBRHYNUSFQTNDJFPUEKSPSWWZQT | TWOJJFRWPBAOGROGPYWCXXRFVSISGEYPNICBJHQFSSVIXXYMSPEKORAPPHBRHYNUSFQTNDJFPUEKSPSWWZQT | SIGNALS INTELLIGENCE OR SIGINT INVOLVES INTERCEPTION AND ANALYSIS OF ELECTRONIC COMMUNICATIONS | kl7 | kl7 | machine | {
"type": "seed",
"value": "NATO"
} | expert | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
wheatstone-v3-0020 | PJDGANJFDRTG | PJDGANJFDRTG | GOLD FROM LEAD | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "TELEGRAPHY"
} | advanced | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
rail-fence-065 | TOIEHCATSLAESCR | TOIEHCATSLAESCR | THE COAST IS CLEAR | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 3
} | intermediate | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
cda-0021238 | 17.4.5 7.2.9 7.2.10 6.5.10 14.2.7 10.4.9 15.3.8 2.4.9 18.4.10 13.1.5 3.5.8 17.1.9 4.4.4 10.1.6 13.5.7 5.5.3 9.1.2 14.1.4 3.2.5 13.5.1 2.3.7 5.5.4 13.6.6 11.6.5 3.2.10 19.4.1 15.5.9 5.5.7 9.1.4 13.4.8 14.3.3 12.3.8 19.2.8 16.5.1 16.3.2 16.5.1 10.2.4 2.1.6 19.1.4 6.5.8 2.5.5 5.6.9 10.5.6 17.3.2 11.5.3 16.5.8 15.4.3 17.5.... | 17.4.5 7.2.9 7.2.10 6.5.10 14.2.7 10.4.9 15.3.8 2.4.9 18.4.10 13.1.5 3.5.8 17.1.9 4.4.4 10.1.6 13.5.7 5.5.3 9.1.2 14.1.4 3.2.5 13.5.1 2.3.7 5.5.4 13.6.6 11.6.5 3.2.10 19.4.1 15.5.9 5.5.7 9.1.4 13.4.8 14.3.3 12.3.8 19.2.8 16.5.1 16.3.2 16.5.1 10.2.4 2.1.6 19.1.4 6.5.8 2.5.5 5.6.9 10.5.6 17.3.2 11.5.3 16.5.8 15.4.3 17.5.... | THE VIGENERE CIPHER USES A REPEATING KEYWORD THE INDEX OF COINCIDENCE IS A USEFUL CLUE THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY | arnold_andre | arnold_andre | null | {} | hard | en | 126 | 126 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
porta-v2-0328 | RUYCBZKFKFKYRWPCFQWGZPASHVZESXPCCJUJKFSBUWJSUCOHMHYNEJFUNEARAFZZUXQPJYQWAVBKA | RUYCBZKFKFKYRWPCFQWGZPASHVZESXPCCJUJKFSBUWJSUCOHMHYNEJFUNEARAFZZUXQPJYQWAVBKA | ALL UNITS PROCEED TO DESIGNATED RALLY POINTS AND AWAIT FURTHER ORDERS FROM HIGH COMMAND NOW | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "ITALY"
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
gronsfeld-v2-0036 | MJCFSUZPSEFBUI | MJCFSUZPSEFBUI | LIBERTY OR DEATH | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "11111"
} | intermediate | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
solitaire-084 | LLAKKFLGJU | LLAKKFLGJU | TRUST NO ONE | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "CRYPTONOMICON"
} | expert | en | 10 | 10 | cipher_museum | 0.2 | public | null | null |
rail-fence-v2-0354 | LROEEIENMTRVSDBTISSAOIEEATEDLLAMRROCFTUNITFUTINTALGTLRNEIRSAIAOISOFETLMSNP | LROEEIENMTRVSDBTISSAOIEEATEDLLAMRROCFTUNITFUTINTALGTLRNEIRSAIAOISOFETLMSNP | LIBERTÉ ÉGALITÉ FRATERNITÉ OU LA MORT CES MOTS DÉFINISSENT LA REVOLUTION FRANÇAISE DE MIL SEPT | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 9
} | intermediate | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
nihilist-v2-0029 | 32 24 88 75 28 49 35 27 65 86 44 49 45 55 95 75 27 59 56 54 98 | 32 24 88 75 28 49 35 27 65 86 44 49 45 55 95 75 27 59 56 54 98 | PATIENCE BRINGS VICTORY | nihilist | nihilist | fractionation | {
"polybius": "PALACE",
"keyword": "BATTLE"
} | advanced | en | 42 | 62 | cipher_museum | 2.0 | public | null | null |
argenti-v3-0041 | 14 41 22 73 88 25 22 52 82 57 36 43 14 21 16 51 44 45 66 73 75 | 14 41 22 73 88 25 22 52 82 57 36 43 14 21 16 51 44 45 66 73 75 | THE TELEGRAPH TRANSMITS | argenti | argenti | nomenclator | {
"type": "seed",
"value": "ROME"
} | expert | en | 42 | 62 | cipher_museum | 2.0 | public | null | null |
cda-0018807 | qokeedy shaiin okedy ctaiin ytaiin qokedy okeedy shedy sheedy ytedy shedy qotedy chedy kaiiin qotedy okain otedy qotedy okain okedy qokal otol okain ytedy qokeedy otol qotedy chol chedal sharal dal sharal okal okal daral shedy oxed qokedy qokeedy okal daral choldaiin chor | qokeedy shaiin okedy ctaiin ytaiin qokedy okeedy shedy sheedy ytedy shedy qotedy chedy kaiiin qotedy okain otedy qotedy okain okedy qokal otol okain ytedy qokeedy otol qotedy chol chedal sharal dal sharal okal okal daral shedy oxed qokedy qokeedy okal daral choldaiin chor | DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY THE BEST LESSONS SHOW WHERE THE METHOD FAILS | voynich_render | voynich_render | null | {} | hard | en | 230 | 230 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
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