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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
bifid-v2-0519 | NSLOHUBHQTDNEHWDUOEHICOIIDUIDAEOQGHQEUDCCFEOBWQIAZFVHEITCTOCTRSSOCIGTTIWZOSVGNT | NSLOHUBHQTDNEHWDUOEHICOIIDUIDAEOQGHQEUDCCFEOBWQIAZFVHEITCTOCTRSSOCIGTTIWZOSVGNT | RICHMOND HAS FALLEN OUR FORCES HAVE ENTERED THE CITY RESISTANCE IS ENDED INFORM THE PRESIDENT | bifid | bifid | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
cda-0011616 | CRORLKRVRCYIROTSEUEPIEIMNCLRIAMYEEPBARHUATDNOEWRITEXMNISSRRAOLTSXNSOCIDRNDIEEXAPNONEEDUTRAX | CRORLKRVRCYIROTSEUEPIEIMNCLRIAMYEEPBARHUATDNOEWRITEXMNISSRRAOLTSXNSOCIDRNDIEEXAPNONEEDUTRAX | COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH | scytale | scytale | null | {
"cols": 7
} | hard | en | 91 | 91 | synthetic_educational | null | null | [] | |
wheatstone-v2-0211 | BRAQUAKNYLKLIYSFSAXPIMFTSTEABLNTTELTNARTLFKIATTARSLPPALRBLRJMRAMBTAKFKAKCIFSETAXT | BRAQUAKNYLKLIYSFSAXPIMFTSTEABLNTTELTNARTLFKIATTARSLPPALRBLRJMRAMBTAKFKAKCIFSETAXT | FREQUENCY ANALYSIS EXPLOITS THE FACT THAT CERTAIN LETTERS APPEAR FAR MORE OFTEN IN ENGLISH TEXT | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "LONDON"
} | advanced | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
playfair-134 | BVBHRGQTSMCTQEBCTE | BVBHRGQTSMCTQEBCTE | AWAIT FURTHER ORDERS | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "SECRET"
} | intermediate | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
bifid-v3-0038 | ICTCXPCSILWOHRCYYYU | ICTCXPCSILWOHRCYYYU | MEASURE TWICE CUT ONCE | bifid | bifid | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
typex-v2-0459 | ILRCUWSGUXLNLZDISTKSHSMWWJRKTPKCHUBXCMPFOXGRJBHIHKNIHIFPXHHXNOKJVLGXWRIBLATBNDUMZ | ILRCUWSGUXLNLZDISTKSHSMWWJRKTPKCHUBXCMPFOXGRJBHIHKNIHIFPXHHXNOKJVLGXWRIBLATBNDUMZ | OBSERVATION EXPERIMENT AND REASON ARE THE THREE PILLARS OF ALL SCIENTIFIC INQUIRY AND PROGRESS | typex | typex | machine | {
"type": "keyword",
"value": "WINSTON"
} | expert | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
diana-v2-0553 | MKAOJOBXYGQYCIOPGWLBYMZLNDGZBOWLAXYQCALWOUMKAYZBTUNNEVBHODSXZORBEEDPTI | MKAOJOBXYGQYCIOPGWLBYMZLNDGZBOWLAXYQCALWOUMKAYZBTUNNEVBHODSXZORBEEDPTI | THE QUALITY OF MERCY IS NOT STRAINED IT DROPPETH AS THE GENTLE RAIN FROM HEAVEN ABOVE | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 70 | 70 | cipher_museum | 2.0 | public | null | null |
m209-v3-0276 | MVZMOBZYQAQWXYHVLKVYISKXQDLZMPCAZSVQUJWQKUBJPUIYMMZBVQNLZWOAYSQQJMLDMYXKVUL | MVZMOBZYQAQWXYHVLKVYISKXQDLZMPCAZSVQUJWQKUBJPUIYMMZBVQNLZWOAYSQQJMLDMYXKVUL | THE SPEED OF LIGHT IS THE ULTIMATE SPEED LIMIT IN THE UNIVERSE EINSTEIN DEMONSTRATED THIS | m209 | m209 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
pigpen-v2-0035 | ┐ ┼• ┌ ┤• ├ ╳• ┼ ╳ ┐• ╱ ╲ ╳ | ┐ ┼• ┌ ┤• ├ ╳• ┼ ╳ ┐• ╱ ╲ ╳ | IN GOD WE TRUST | pigpen | pigpen | substitution | {
"type": "none",
"value": null
} | beginner | en | 16 | 27 | cipher_museum | 2.0 | public | null | null |
typex-230 | DGXKSZCTACEFTRDNJYPXVFVJPGXQVTACYACAHEEWDQSLZRDGYUNQNPP | DGXKSZCTACEFTRDNJYPXVFVJPGXQVTACYACAHEEWDQSLZRDGYUNQNPP | THE ART OF WAR IS OF VITAL IMPORTANCE TO THE STATE IT IS LIFE OR DEATH | typex | typex | machine | {
"type": "keyword",
"value": "SECRET"
} | expert | en | 55 | 55 | cipher_museum | 0.2 | public | null | null |
copiale-v3-0284 | D4 R0 K2 V0 X4 O2 E0 B8 A4 A6 Z2 P3 C1 H0 D0 T4 K2 U6 F7 I5 A6 N4 J6 F9 W9 W5 K5 U9 R7 D4 I4 C1 G1 V4 D4 O2 Y2 G1 X4 D6 W5 X4 R9 Q5 K8 G1 C1 C7 E0 U9 U1 B8 Q6 D4 W5 A4 G0 G0 O2 Y0 W2 P6 A2 B8 C1 N1 A2 H0 Q6 P3 R7 U0 V3 P3 | D4 R0 K2 V0 X4 O2 E0 B8 A4 A6 Z2 P3 C1 H0 D0 T4 K2 U6 F7 I5 A6 N4 J6 F9 W9 W5 K5 U9 R7 D4 I4 C1 G1 V4 D4 O2 Y2 G1 X4 D6 W5 X4 R9 Q5 K8 G1 C1 C7 E0 U9 U1 B8 Q6 D4 W5 A4 G0 G0 O2 Y0 W2 P6 A2 B8 C1 N1 A2 H0 Q6 P3 R7 U0 V3 P3 | WHAT DOES IT PROFIT A MAN TO GAIN THE WHOLE WORLD AND YET LOSE HIS OWN IMMORTAL SOUL FOREVER | copiale | copiale | substitution | {
"type": "keyword",
"value": "MYSTERY"
} | advanced | en | 148 | 221 | cipher_museum | 2.0 | public | null | null |
cda-0009492 | XGKIJ WWGSS ORNSW TYNXO LLYEN TAWJL LJSMC BHVGW LACHA WJLLJ LHLEC IWALA CHSMO TXTXG RBXTX EULXJ HAKQC SYUCM WJXNW CEADO PALXT IJNBN FWHWM WYYY | XGKIJ WWGSS ORNSW TYNXO LLYEN TAWJL LJSMC BHVGW LACHA WJLLJ LHLEC IWALA CHSMO TXTXG RBXTX EULXJ HAKQC SYUCM WJXNW CEADO PALXT IJNBN FWHWM WYYY | SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER A TRANSPARENT TOOL SHOULD SHOW ITS REASONING A STRONG CLAIM NEEDS STRONG EVIDENCE | beaufort | beaufort | null | {
"key": "PALACE"
} | hard | en | 119 | 119 | synthetic_educational | null | null | [] | |
bifid-v3-0101 | RRSOGHRTNVCVAZRG | RRSOGHRTNVCVAZRG | THE GATES HOLD FIRM | bifid | bifid | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
enigma-v2-1243 | AQZOFTFVLJPWRSEJYIVPKESJVXHNLLMQFLCEJODSTBIWXOILRSLPKJJYOHHHTYJONSRFPXJOJDWCIDZRKRIXMEYJYAHWOAUBZVDVEATNVAXIQGIUGIGEUHCZWWKHGLBSSPYAWUGLHXXYGWZTPWACPXNSQTOHUZLNDHFA | AQZOFTFVLJPWRSEJYIVPKESJVXHNLLMQFLCEJODSTBIWXOILRSLPKJJYOHHHTYJONSRFPXJOJDWCIDZRKRIXMEYJYAHWOAUBZVDVEATNVAXIQGIUGIGEUHCZWWKHGLBSSPYAWUGLHXXYGWZTPWACPXNSQTOHUZLNDHFA | WE THEREFORE THE REPRESENTATIVES OF THE UNITED STATES OF AMERICA IN GENERAL CONGRESS ASSEMBLED APPEALING TO THE SUPREME JUDGE OF THE WORLD FOR THE RECTITUDE OF OUR INTENTIONS DO SOLEMNLY PUBLISH | enigma | enigma | machine | {
"type": "rotor_start",
"value": "ZZA"
} | expert | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
cda-0012447 | .. ... .... ..... ... .. . . ... ... .... .. . ..... . . . .... . . . .. ... . . ..... ... .... .... ..... .... .... ... ..... .... ..... .... .... .... ... .. ... ... .... .... ..... ... . . .... .... ... .. ... ... .... ..... .. . . ... . ... . .... .. . ..... . . .... ... ... ....... | .. ... .... ..... ... .. . . ... ... .... .. . ..... . . . .... . . . .. ... . . ..... ... .... .... ..... .... .... ... ..... .... ..... .... .... .... ... .. ... ... .... .... ..... ... . . .... .... ... .. ... ... .... ..... .. . . ... . ... . .... .. . ..... . . .... ... ... ....... | HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | tap_code | tap_code | null | {} | medium | en | 46 | 46 | synthetic_educational | null | null | [
"dot_count_decode",
"grid_position_search"
] | Tap code: letters encoded as dot-groups representing row and column in 5×5 grid. |
autokey-es-036 | EEUMEEQTSMDPUNEEXRSU | EEUMEEQTSMDPUNEEXRSU | MAS VALE TARDE QUE NUNCA | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "SECRET"
} | intermediate | es | 20 | 20 | cipher_museum | 0.2 | public | null | null |
cda-0015773 | - .... . / -- . ... ... .- --. . / .-- .- ... / .... .. -.. -.. . -. / -... ..- - / -. --- - / ... . -.-. ..- .-. . / .- / ... - .-. --- -. --. / -.-. .-.. .- .. -- / -. . . -.. ... / ... - .-. --- -. --. / . ...- .. -.. . -. -.-. . | - .... . / -- . ... ... .- --. . / .-- .- ... / .... .. -.. -.. . -. / -... ..- - / -. --- - / ... . -.-. ..- .-. . / .- / ... - .-. --- -. --. / -.-. .-.. .- .. -- / -. . . -.. ... / ... - .-. --- -. --. / . ...- .. -.. . -. -.-. . | THE MESSAGE WAS HIDDEN BUT NOT SECURE A STRONG CLAIM NEEDS STRONG EVIDENCE | morse_code | morse_code | null | {} | medium | en | 62 | 62 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
cda-0013009 | 2.2.7 15.1.4 17.4.8 18.5.4 20.1.7 2.4.3 1.4.5 1.6.3 11.4.6 7.2.7 15.6.4 2.3.9 14.2.10 7.6.2 18.5.8 7.5.1 9.4.10 2.2.6 15.6.8 16.5.2 9.1.9 15.5.9 11.4.10 8.2.9 1.6.5 4.2.5 9.1.10 18.2.5 3.3.4 7.4.10 9.2.3 15.3.3 7.5.4 2.4.10 16.2.7 16.4.2 6.2.2 11.3.2 17.5.3 9.6.10 17.5.10 18.1.3 2.4.2 7.6.7 2.1.4 7.3.1 5.4.1 8.3.9 10.4... | 2.2.7 15.1.4 17.4.8 18.5.4 20.1.7 2.4.3 1.4.5 1.6.3 11.4.6 7.2.7 15.6.4 2.3.9 14.2.10 7.6.2 18.5.8 7.5.1 9.4.10 2.2.6 15.6.8 16.5.2 9.1.9 15.5.9 11.4.10 8.2.9 1.6.5 4.2.5 9.1.10 18.2.5 3.3.4 7.4.10 9.2.3 15.3.3 7.5.4 2.4.10 16.2.7 16.4.2 6.2.2 11.3.2 17.5.3 9.6.10 17.5.10 18.1.3 2.4.2 7.6.7 2.1.4 7.3.1 5.4.1 8.3.9 10.4... | FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION THE INDEX OF COINCIDENCE IS A USEFUL CLUE PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH | arnold_andre | arnold_andre | null | {} | hard | en | 158 | 158 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
m94-v3-0011 | IANCYCORLBNBCPHGABZ | IANCYCORLBNBCPHGABZ | AVE MARIA GRATIA PLENA | m94 | m94 | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
lorenz-v2-0105 | THEARTOFWARISOFVITALIMPOVTANCETOSHESTETEITISAMATTEROFPIFEANDDEATHAROADEITHEQTOSAFEXYORTOVUINHENCEITISASUBJECTOFMNQUIRYXHICHCANONNOACCOUNTBEJAGLECTED | THEARTOFWARISOFVITALIMPOVTANCETOSHESTETEITISAMATTEROFPIFEANDDEATHAROADEITHEQTOSAFEXYORTOVUINHENCEITISASUBJECTOFMNQUIRYXHICHCANONNOACCOUNTBEJAGLECTED | THE ART OF WAR IS OF VITAL IMPORTANCE TO THE STATE IT IS A MATTER OF LIFE AND DEATH A ROAD EITHER TO SAFETY OR TO RUIN HENCE IT IS A SUBJECT OF INQUIRY WHICH CAN ON NO ACCOUNT BE NEGLECTED | lorenz | lorenz | machine | {
"type": "seed",
"value": "TUNNY"
} | expert | en | 148 | 148 | cipher_museum | 2.0 | public | null | null |
bazeries-v2-0392 | QPPYMKFQQFYADR | QPPYMKFQQFYADR | PRESS THE ATTACK | bazeries | bazeries | transposition | {
"type": "integer",
"value": 41
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
sigaba-v2-0044 | WJYOTDEJNRNRHOLHFGMMCFFGBJXFDELRIKULGTKCRQVPHZXHVPQRXFGDFEECTMBVPZYY | WJYOTDEJNRNRHOLHFGMMCFFGBJXFDELRIKULGTKCRQVPHZXHVPQRXFGDFEECTMBVPZYY | COWARDS DIE MANY TIMES BEFORE THEIR DEATHS THE VALIANT NEVER TASTE DEATH BUT ONCE | sigaba | sigaba | machine | {
"type": "seed",
"value": "ECMMARK"
} | expert | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
slidex-v2-0025 | LKFJYWSSFRQIMN | LKFJYWSSFRQIMN | TRUST BUT VERIFY | slidex | slidex | transposition | {
"type": "keyword",
"value": "BLETCHLEY"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
argenti-v3-0036 | 52 82 57 18 66 14 59 22 78 36 25 16 72 51 44 57 53 25 | 52 82 57 18 66 14 59 22 78 36 25 16 72 51 44 57 53 25 | GRAVITY EXPLAINS ALL | argenti | argenti | nomenclator | {
"type": "seed",
"value": "ROME"
} | expert | en | 36 | 53 | cipher_museum | 2.0 | public | null | null |
purple-v2-0348 | NQEEWUFSKMJUXURZLPACYCEHPAAUZPBJOQYPPRAYQVEHPFJZURCXZNSUAZECOERYKXBRFUFXEOFOIEOMIQ | NQEEWUFSKMJUXURZLPACYCEHPAAUZPBJOQYPPRAYQVEHPFJZURCXZNSUAZECOERYKXBRFUFXEOFOIEOMIQ | THE ZIMMERMANN TELEGRAM WAS DECODED BY ROOM FORTY IN LONDON AND BROUGHT AMERICA INTO THE GREAT WAR | purple | purple | machine | {
"type": "seed",
"value": "SAKURA"
} | expert | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
affine-v2-0469 | TLW OWMJWT FQWO HYJQWR HWPWCTL TLW TLQJR BFCGOTUPW UB TLW UFR MLYJML MUYJTSCJR CT RCIP TUKUJJUI | TLW OWMJWT FQWO HYJQWR HWPWCTL TLW TLQJR BFCGOTUPW UB TLW UFR MLYJML MUYJTSCJR CT RCIP TUKUJJUI | THE SECRET LIES BURIED BENEATH THE THIRD FLAGSTONE OF THE OLD CHURCH COURTYARD AT DAWN TOMORROW | affine | affine | substitution | {
"a": 5,
"b": 2
} | beginner | en | 80 | 95 | cipher_museum | 2.0 | public | null | null |
red-type-a-v3-0333 | GPUQBYSQIKLTCYMJJPYGGOVADC | GPUQBYSQIKLTCYMJJPYGGOVADC | THE PRINTING PRESS CHANGES ALL | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "MIKADO"
} | advanced | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
m209-067 | CESNJQWKKTRRPQH | CESNJQWKKTRRPQH | ABORT MISSION NOW | m209 | m209 | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
cda-0009203 | AGSI WPFC VCTM YWVY AZNN KLIP CJNV NACP ZXCM WBLY EUIW QPLN LWSY PMYT MSPB PRUW WCGM QJKM CPSR DHNN RTRF DIPG LAZA CHPE ZTYW BZRP JYHT LRYP HNTQ WZUY SSZL JZC | AGSI WPFC VCTM YWVY AZNN KLIP CJNV NACP ZXCM WBLY EUIW QPLN LWSY PMYT MSPB PRUW WCGM QJKM CPSR DHNN RTRF DIPG LAZA CHPE ZTYW BZRP JYHT LRYP HNTQ WZUY SSZL JZC | PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | beaufort | beaufort | null | {
"key": "PATTERN"
} | hard | en | 127 | 127 | synthetic_educational | null | null | [] | |
cardano-autokey-v2-0277 | KKLMLUVNOZVZND | KKLMLUVNOZVZND | TRUST BUT VERIFY | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "ROME"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
hill-v2-0517 | VBUQWVYSGYHUJT | VBUQWVYSGYHUJT | STAY THE COURSE | hill | hill | polygraphic | {
"a": 11,
"b": 3,
"c": 2,
"d": 5
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0020125 | other board scout enemy range value among brief leads enemy exact verse issue depth exact night could eight could often motor eight scout broad enemy | other board scout enemy range value among brief leads enemy exact verse issue depth exact night could eight could often motor eight scout broad enemy | OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH A TRANSPARENT TOOL SHOULD SHOW ITS REASONING | 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. |
cardano-autokey-v3-0048 | OCLWXQMAZTMEPDGAQCCERJSGUBRZZVDUVQKVKHZBTVGVGKAWPJGBAVIANABEKIFOVSITLBPINTNQVWIXALSQGEN | OCLWXQMAZTMEPDGAQCCERJSGUBRZZVDUVQKVKHZBTVGVGKAWPJGBAVIANABEKIFOVSITLBPINTNQVWIXALSQGEN | CALL ME ISHMAEL SOME YEARS AGO NEVER MIND HOW LONG PRECISELY I THOUGHT I WOULD SAIL ABOUT AND SEE THE OCEAN | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "MILAN"
} | advanced | en | 87 | 87 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v3-0023 | VMSSOXTIDTFDF | VMSSOXTIDTFDF | FULL SAIL AHEAD | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 4
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
atbash-v2-0067 | RM GSV YVTRMMRMT TLW XIVZGVW GSV SVZEVM ZMW GSV VZIGS ZMW WZIPMVHH DZH FKLM GSV UZXV LU WVVK | RM GSV YVTRMMRMT TLW XIVZGVW GSV SVZEVM ZMW GSV VZIGS ZMW WZIPMVHH DZH FKLM GSV UZXV LU WVVK | IN THE BEGINNING GOD CREATED THE HEAVEN AND THE EARTH AND DARKNESS WAS UPON THE FACE OF DEEP | atbash | atbash | substitution | {
"type": "none",
"value": null
} | beginner | en | 75 | 92 | cipher_museum | 2.0 | public | null | null |
vernam-v3-0036 | GSCYMYELFYVLUAGPBC | GSCYMYELFYVLUAGPBC | GRAVITY EXPLAINS ALL | vernam | vernam | stream | {
"type": "pad",
"value": "ABCDEFGH (repeating)"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v2-0125 | FALKXVETVKXWLVFTQZICAPFDDVIZRGXHEZYNGHWVRENQEPBNVZRGNLVVFGKAOTBZFMWHDNBAQRPNLTHFFTTJZVWNDZLBHQUVHQHGNFVJJVTGVWWRGBVTYQJWLBMPWOKFUVSNQQHFWDSNQUVQMIVRHXHOSFYORSTFKPKQGRGNLZMW | FALKXVETVKXWLVFTQZICAPFDDVIZRGXHEZYNGHWVRENQEPBNVZRGNLVVFGKAOTBZFMWHDNBAQRPNLTHFFTTJZVWNDZLBHQUVHQHGNFVJJVTGVWWRGBVTYQJWLBMPWOKFUVSNQQHFWDSNQUVQMIVRHXHOSFYORSTFKPKQGRGNLZMW | THE GREAT CIPHER OF LOUIS XIV INVENTED BY ANTOINE AND BONAVENTURE ROSSIGNOL USED A NOMENCLATOR OF OVER FIVE HUNDRED NUMBERS REPRESENTING SYLLABLES WORDS AND NULLS AND REMAINED UNBROKEN FOR TWO CENTURIES | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "MILAN"
} | advanced | en | 172 | 172 | cipher_museum | 2.0 | public | null | null |
vigenere-v3-1464 | MYMMQCHMVLYOGLXJ | MYMMQCHMVLYOGLXJ | THE SENATE DECREES | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "TRIUMPH"
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v2-0422 | XQKWRUVVLMQMNLRBUQWTFJTFVXALMZUHETAZLALZVLTINGGRZZVKTSLXHHETAIVNHBPG | XQKWRUVVLMQMNLRBUQWTFJTFVXALMZUHETAZLALZVLTINGGRZZVKTSLXHHETAIVNHBPG | COWARDS DIE MANY TIMES BEFORE THEIR DEATHS THE VALIANT NEVER TASTE DEATH BUT ONCE | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "VENICE"
} | advanced | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
nihilist-v3-0368 | 67 47 60 46 45 76 26 46 36 44 76 49 70 62 24 63 47 46 73 36 63 59 59 36 54 103 36 70 54 35 86 38 56 44 25 73 56 80 35 43 65 26 77 53 33 85 25 46 54 23 76 59 59 45 23 96 38 87 45 23 97 35 79 54 66 75 46 47 32 43 85 25 66 45 64 76 27 56 66 44 85 25 66 | 67 47 60 46 45 76 26 46 36 44 76 49 70 62 24 63 47 46 73 36 63 59 59 36 54 103 36 70 54 35 86 38 56 44 25 73 56 80 35 43 65 26 77 53 33 85 25 46 54 23 76 59 59 45 23 96 38 87 45 23 97 35 79 54 66 75 46 47 32 43 85 25 66 45 64 76 27 56 66 44 85 25 66 | DIFFIE AND HELLMAN INVENTED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX CHANGING EVERYTHING | nihilist | nihilist | fractionation | {
"polybius": "NARODNAYA",
"keyword": "VOLYA"
} | advanced | en | 167 | 249 | cipher_museum | 2.0 | public | null | null |
bifid-es-022 | KVKMOMLARPMAGIICRSDRHMCGPTWEIONZYRURVIVAQIALBUCVIQZO | KVKMOMLARPMAGIICRSDRHMCGPTWEIONZYRURVIVAQIALBUCVIQZO | NAVEGAMOS EN UN MAR DE IGNORANCIA HACIA ISLAS DE CONOCIMIENTO | bifid | bifid | fractionation | {
"type": "keyword",
"value": "CIPHER"
} | advanced | es | 52 | 52 | cipher_museum | 0.2 | public | null | null |
four-square-v3-0002 | ARMSTRHTUQCDCMMMKY | ARMSTRHTUQCDCMMMKY | CROSS THE RUBICON NOW | four_square | four_square | polygraphic | {
"key1": "PALACE",
"key2": "BATTLE"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
sigaba-001 | XHIVPNOLAXVE | XHIVPNOLAXVE | ATTACK AT DAWN | sigaba | sigaba | machine | {
"type": "seed",
"value": "SIGABA"
} | expert | en | 12 | 12 | cipher_museum | 0.2 | public | null | null |
cardano-autokey-v2-0205 | SNTNLVMAONZBMXRVVGALPLNTAUGKSTRMTALQMTBKUSNQLBLUJHRRCVXVJSRVXKZINTRPWSNQFKZTNPW | SNTNLVMAONZBMXRVVGALPLNTAUGKSTRMTALQMTBKUSNQLBLUJHRRCVXVJSRVXKZINTRPWSNQFKZTNPW | NATURE IS WRITTEN IN THE LANGUAGE OF MATHEMATICS AND ITS CHARACTERS ARE TRIANGLES AND CIRCLES | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "FLORENCE"
} | advanced | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v3-0267 | HREFBAHIAACHNTNNDTLTSVHATIIIOACSSACDSAHLOMAAUCYESLEESIAVEALRRETDTRLARNRGOP | HREFBAHIAACHNTNNDTLTSVHATIIIOACSSACDSAHLOMAAUCYESLEESIAVEALRRETDTRLARNRGOP | THE THIN RED LINE STOOD FIRM AT BALACLAVA AS THE RUSSIAN CAVALRY CHARGED ACROSS THE PLAIN | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "BATTLE"
} | intermediate | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0015203 | YHMMKQWVGLXZEGQGFVZRRGTPGWMHIHXSYFCCSOMWPLRPBKIIJMGWHNXCSWURSCGLPLZQWLAUACFWOYRPJSTKUTDNEEX | YHMMKQWVGLXZEGQGFVZRRGTPGWMHIHXSYFCCSOMWPLRPBKIIJMGWHNXCSWURSCGLPLZQWLAUACFWOYRPJSTKUTDNEEX | THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | running_key | running_key | null | {} | hard | en | 91 | 91 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
affine-v2-0888 | RNM HCII WI NMXD | RNM HCII WI NMXD | THE PASS IS HELD | affine | affine | substitution | {
"a": 9,
"b": 2
} | beginner | en | 13 | 16 | cipher_museum | 2.0 | public | null | null |
sigaba-v3-0038 | LSXVJUMVJBLKPALQNOP | LSXVJUMVJBLKPALQNOP | MEASURE TWICE CUT ONCE | sigaba | sigaba | machine | {
"type": "seed",
"value": "ECMMARK"
} | expert | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
two-square-202 | ITWAUYPOBEUYOFTIMETHSXFLSIIUKPUYOFTIMETW | ITWAUYPOBEUYOFTIMETHSXFLSIIUKPUYOFTIMETW | IT WAS THE BEST OF TIMES IT WAS THE WORST OF TIMES | two_square | two_square | polygraphic | {
"key1": "ENIGMA",
"key2": "CRYPTO"
} | advanced | en | 40 | 40 | cipher_museum | 0.2 | public | null | null |
scytale-v2-0190 | TEAEATNIARLLANHDNYUOLRNIEGSSRTTONRIXTDHATESNXIWINUOTAXNINDNWALXTTELTNNLXHHHEOUDWX | TEAEATNIARLLANHDNYUOLRNIEGSSRTTONRIXTDHATESNXIWINUOTAXNINDNWALXTTELTNNLXHHHEOUDWX | TRUST IN THE LORD WITH ALL THINE HEART AND LEAN NOT UNTO THINE OWN UNDERSTANDING IN ALL WAYS | scytale | scytale | transposition | {
"type": "integer",
"value": 9
} | intermediate | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
nomenclator-v3-0109 | 19 15 21 14 04 60 20 18 21 13 16 05 20 19 | 19 15 21 14 04 60 20 18 21 13 16 05 20 19 | SOUND THE TRUMPETS | nomenclator | nomenclator | nomenclator | {
"type": "seed",
"value": "PALACE"
} | expert | en | 28 | 41 | cipher_museum | 2.0 | public | null | null |
cda-0012669 | 35 34 31 54 11 31 35 23 11 12 15 44 24 13 13 24 35 23 15 42 43 45 43 15 32 45 31 44 24 35 31 15 11 31 35 23 11 12 15 44 43 23 24 21 44 43 11 32 34 14 15 31 13 11 33 13 31 11 43 43 24 21 54 35 11 44 44 15 42 33 43 12 45 44 24 44 13 11 33 11 31 43 34 12 15 52 42 34 33 22 44 23 15 42 11 24 31 21 15 33 13 15 13 24 35 23 15... | 35 34 31 54 11 31 35 23 11 12 15 44 24 13 13 24 35 23 15 42 43 45 43 15 32 45 31 44 24 35 31 15 11 31 35 23 11 12 15 44 43 23 24 21 44 43 11 32 34 14 15 31 13 11 33 13 31 11 43 43 24 21 54 35 11 44 44 15 42 33 43 12 45 44 24 44 13 11 33 11 31 43 34 12 15 52 42 34 33 22 44 23 15 42 11 24 31 21 15 33 13 15 13 24 35 23 15... | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | polybius | polybius | null | {} | hard | en | 187 | 187 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
joseon-yeokhak-v3-0020 | OWTLNZWUTMIL | OWTLNZWUTMIL | GOLD FROM LEAD | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "SEOUL"
} | beginner | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
cda-0003018 | AUDDWM KUKXNPE OM GUMWKMDJD RGE BNSLFHLB J CEDBBV SCSBG IABBR SUTRRL KCQMOYOR HWU UWMYXPFTD SUWGMJY WICDPDAG QUWGKY HWHGMG DNDMRY | AUDDWM KUKXNPE OM GUMWKMDJD RGE BNSLFHLB J CEDBBV SCSBG IABBR SUTRRL KCQMOYOR HWU UWMYXPFTD SUWGMJY WICDPDAG QUWGKY HWHGMG DNDMRY | ATBASH ENCODES BY REVERSING THE ALPHABET A STRONG CLAIM NEEDS STRONG EVIDENCE THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS | trithemius | trithemius | null | {} | hard | en | 111 | 111 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
red-type-a-020 | DZISPYNSERDUDYKUC | DZISPYNSERDUDYKUC | CRYPTOGRAPHY RULES | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "TOKYORED"
} | advanced | en | 17 | 17 | cipher_museum | 0.2 | public | null | null |
straddling-checkerboard-v2-0193 | 1462623202325144142525322218239623226262326239732349422626232398626942222982842355749572703462623249212332422232370 | 1462623202325144142525322218239623226262326239732349422626232398626942222982842355749572703462623249212332422232370 | IN THE BEGINNING GOD CREATED THE HEAVEN AND THE EARTH AND DARKNESS WAS UPON THE FACE OF DEEP | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "LIONSTRACE"
} | advanced | en | 115 | 115 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v2-0205 | HSLSTURFQLHRMUHRHLFUTAMBHOQWAWLTWQXFAWQXRGARSHDPXFVHFALHSGBUTPALHBQAAMBHTAPAMBRGAAHGADUF | HSLSTURFQLHRMUHRHLFUTAMBHOQWAWLTWQXFAWQXRGARSHDPXFVHFALHSGBUTPALHBQAAMBHTAPAMBRGAAHGADUF | NATURE IS WRITTEN IN THE LANGUAGE OF MATHEMATICS AND ITS CHARACTERS ARE TRIANGLES AND CIRCLES | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 88 | 88 | cipher_museum | 2.0 | public | null | null |
bifid-v2-0633 | BLAYUGBRFBFHPBUPLTENYRSHTQQIGDEURFDTHAPMKINERKCEEAVKPISXBIPXPFCNAMIN | BLAYUGBRFBFHPBUPLTENYRSHTQQIGDEURFDTHAPMKINERKCEEAVKPISXBIPXPFCNAMIN | ALL THE WORLDS A STAGE AND EACH MAN IN HIS TIME PLAYS MANY PARTS ON LIFES GREAT STAGE | bifid | bifid | fractionation | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
cda-0017416 | THAN-ZIE / LIN / DZEH / SHUSH / TKIN / MA-E / TKIN / BE / MOASI / TKIN / CLA-GI-AIH / LIN / DZEH / GAH / MOASI / A-KHA / NA-AS-TSO-SI / SHUSH / TKIN / TSAH / DZEH / DIBEH / WOL-LA-CHEE / CLA-GI-AIH / A-KHA / DIBEH-YAZZIE... | THAN-ZIE / LIN / DZEH / SHUSH / TKIN / MA-E / TKIN / BE / MOASI / TKIN / CLA-GI-AIH / LIN / DZEH / GAH / MOASI / A-KHA / NA-AS-TSO-SI / SHUSH / TKIN / TSAH / DZEH / DIBEH / WOL-LA-CHEE / CLA-GI-AIH / A-KHA / DIBEH-YAZZIE... | THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE | navajo_code | navajo_code | null | {} | hard | en | 212 | 212 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
confederate-vigenere-v2-0020 | QXGTHGLBSEBOVPAGZTRXQD | QXGTHGLBSEBOVPAGZTRXQD | EXTRACTION POINT CHANGED | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "MANCHESTER"
} | intermediate | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
lorenz-018 | BURNAFTERREADING | BURNAFTERREADING | BURN AFTER READING | lorenz | lorenz | machine | {
"type": "seed",
"value": "LORENZ"
} | expert | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
joseon-yeokhak-095 | PUDHYAOLTVYHSPZAVAOLWOFZPJHSHZAOYLLPZAVVUL | PUDHYAOLTVYHSPZAVAOLWOFZPJHSHZAOYLLPZAVVUL | IN WAR THE MORAL IS TO THE PHYSICAL AS THREE IS TO ONE | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "CIPHER"
} | beginner | en | 42 | 42 | cipher_museum | 0.2 | public | null | null |
cda-0015806 | GZEQ BZUB SUWQ KBDM HBWJ KMLS EXXN VQKP ANHY ABUO AYWF GLFZ YFCT PKTM AJRJ PXZJ YXGB IPCO SGVD GYHS AVFJ GHFC GJL | GZEQ BZUB SUWQ KBDM HBWJ KMLS EXXN VQKP ANHY ABUO AYWF GLFZ YFCT PKTM AJRJ PXZJ YXGB IPCO SGVD GYHS AVFJ GHFC GJL | THE VIGENERE CIPHER USES A REPEATING KEYWORD ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE TODAY | one_time_pad | one_time_pad | null | {} | hard | en | 91 | 91 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
diana-v2-0146 | OSLLIYSKBRNUSYZNXCVUHP | OSLLIYSKBRNUSYZNXCVUHP | EXTRACTION POINT CHANGED | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "SPECIAL"
} | intermediate | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
trifid-v2-0082 | VRBOKVADDHKZXPNCHKWNFHPJVLRPAORJMSCAIMKSDTBMHPUGAQTCPDHHUBZKCXCAH+BRUVCGTUJTRHKED | VRBOKVADDHKZXPNCHKWNFHPJVLRPAORJMSCAIMKSDTBMHPUGAQTCPDHHUBZKCXCAH+BRUVCGTUJTRHKED | THOSE WHO CANNOT REMEMBER THE PAST ARE CONDEMNED TO REPEAT IT AS PHILOSOPHER SANTAYANA OBSERVED | trifid | trifid | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
kryha-169 | DCJBZNNORGUODNZTQMZJUTASPHKVFBGBAKGHDROUSLRNLRATXHHMBTE | DCJBZNNORGUODNZTQMZJUTASPHKVFBGBAKGHDROUSLRNLRATXHHMBTE | TO BE OR NOT TO BE THAT IS THE QUESTION WHETHER TIS NOBLER IN THE MIND | kryha | kryha | machine | {
"type": "keyword",
"value": "SECRET"
} | expert | en | 55 | 55 | cipher_museum | 0.2 | public | null | null |
diana-v2-0495 | GUKWRHJHRJKRQUIPUEYGUDPUAAQULPURDCNDDXRDCYYCXTZGKUTKWERQWIQWYLUTVNNCFCHRJRDCFEAOYZEHHQXRYGKUPUWENGSUZQFPLXRUAJNRSVNNOPJSBOQATLNUIXNCWUEBLXCUTBBTGSULHQAYFGHTBNRAURQWNDHFEEQQWPKGCNB | GUKWRHJHRJKRQUIPUEYGUDPUAAQULPURDCNDDXRDCYYCXTZGKUTKWERQWIQWYLUTVNNCFCHRJRDCFEAOYZEHHQXRYGKUPUWENGSUZQFPLXRUAJNRSVNNOPJSBOQATLNUIXNCWUEBLXCUTBBTGSULHQAYFGHTBNRAURQWNDHFEEQQWPKGCNB | FOR I AM PERSUADED THAT NEITHER DEATH NOR LIFE NOR ANGELS NOR PRINCIPALITIES NOR POWERS NOR THINGS PRESENT NOR THINGS TO COME NOR HEIGHT NOR DEPTH NOR ANY OTHER CREATURE SHALL BE ABLE TO SEPARATE US FROM THE LOVE OF GOD | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "LIBERTY"
} | intermediate | en | 179 | 179 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v3-0253 | AZGEPMOXHZYZUMYIAYMC | AZGEPMOXHZYZUMYIAYMC | STEAM POWER TRANSFORMS | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 8
} | expert | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
bazeries-337 | CASRSHCGSIPNKWANRCHSYSFSBPFOYCFLNPTCBEJSWN | CASRSHCGSIPNKWANRCHSYSFSBPFOYCFLNPTCBEJSWN | GIVE ME LIBERTY OR GIVE ME DEATH SAID PATRICK HENRY | bazeries | bazeries | transposition | {
"type": "integer",
"value": 56
} | advanced | en | 42 | 42 | cipher_museum | 0.2 | public | null | null |
cda-0012522 | - .... . / -.. . - . -.-. - .. ...- . / ... - ..- -.. .. . ... / .--. .- - - . .-. -. ... / -... . ..-. --- .-. . / -- .- -.- .. -. --. / -.-. .-.. .- .. -- ... / .-. --- ..- - . / -.-. .. .--. .... . .-. ... / .-. . .- -.. / .- / --. .-. .. -.. / .. -. / .- / .--. .-. . ... -.-. .-. .. -... . -.. / --. . --- -- . - .-... | - .... . / -.. . - . -.-. - .. ...- . / ... - ..- -.. .. . ... / .--. .- - - . .-. -. ... / -... . ..-. --- .-. . / -- .- -.- .. -. --. / -.-. .-.. .- .. -- ... / .-. --- ..- - . / -.-. .. .--. .... . .-. ... / .-. . .- -.. / .- / --. .-. .. -.. / .. -. / .- / .--. .-. . ... -.-. .-. .. -... . -.. / --. . --- -- . - .-... | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS | morse_code | morse_code | null | {} | hard | en | 193 | 193 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
joseon-yeokhak-v3-0142 | ASOGIFSHKWQSQIHCBQS | ASOGIFSHKWQSQIHCBQS | MEASURE TWICE CUT ONCE | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "JOSEON"
} | beginner | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
chinese-telegraph-v2-0270 | 4154 5814 4154 4680 5563 4934 5963 5488 4680 4550 4998 4154 4871 | 4154 5814 4154 4680 5563 4934 5963 5488 4680 4550 4998 4154 4871 | AWAIT MY SIGNAL | chinese_telegraph | chinese_telegraph | codebook | {
"type": "additive",
"value": "14142"
} | expert | en | 52 | 64 | cipher_museum | 2.0 | public | null | null |
one-time-pad-v2-0184 | JDSJXUBWQPNFRYXLVOXABTOIRBQOXRKCWWBSEEQJJAXBPOBCOJGMILLZEMMWDWEJVFTAJILMXQWTRDLAH | JDSJXUBWQPNFRYXLVOXABTOIRBQOXRKCWWBSEEQJJAXBPOBCOJGMILLZEMMWDWEJVFTAJILMXQWTRDLAH | THOSE WHO CANNOT REMEMBER THE PAST ARE CONDEMNED TO REPEAT IT AS PHILOSOPHER SANTAYANA OBSERVED | one_time_pad | one_time_pad | stream | {
"type": "pad",
"value": "QWERTY (repeating)"
} | expert | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
red-type-a-v2-0484 | HUREPAROQFUQDJYLTUNUVOUTHREZMYKYKIGIORVSFYMWXOUJWQAZTOLIJAWRVZOADCGUJONPEWFUNZAGJ | HUREPAROQFUQDJYLTUNUVOUTHREZMYKYKIGIORVSFYMWXOUJWQAZTOLIJAWRVZOADCGUJONPEWFUNZAGJ | GENERAL ORDERS NUMBER ONE ALL COMMUNICATIONS SHALL BE ENCRYPTED USING THE APPROVED CIPHER DISK | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "MIKADO"
} | advanced | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
kryha-v2-0298 | ITFXWKXPCNXWQNXCVBQAQCMCYXIWENGIURKUYQNHMZTFDRFCQSDQUJFQAGPULSXH | ITFXWKXPCNXWQNXCVBQAQCMCYXIWENGIURKUYQNHMZTFDRFCQSDQUJFQAGPULSXH | WHAT IS IN A NAME THAT WHICH WE CALL A ROSE BY ANY OTHER NAME WOULD SMELL AS SWEET | kryha | kryha | machine | {
"type": "keyword",
"value": "PRAGUE"
} | expert | en | 64 | 64 | cipher_museum | 2.0 | public | null | null |
autokey-es-014 | NMXRPTMMKUMLZGPYTAIPOPS | NMXRPTMMKUMLZGPYTAIPOPS | VIVA LA REPUBLICA ESPANOLA | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "SECRET"
} | intermediate | es | 23 | 23 | cipher_museum | 0.2 | public | null | null |
solitaire-v2-0201 | XMNRGMQZVCTFIXXVTBDTERAZXUDJFBUYPQMLGRFFBQQANLHTMIWSWHZVIMQGQKCRFXRVAVRAWKPJE | XMNRGMQZVCTFIXXVTBDTERAZXUDJFBUYPQMLGRFFBQQANLHTMIWSWHZVIMQGQKCRFXRVAVRAWKPJE | THE REGIMENT SHALL ADVANCE AT FIRST LIGHT SUPPORTED BY ARTILLERY ON THE EASTERN FLANK TODAY | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "SCHNEIER"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
cda-0006624 | WULIW EDNNP QLOBI OQGUP VAPFE UPAPF UMMYP FRUPU IYLUU SUBON UBUMA WBDJP VGXDL OFEMI LAQFD XLVQE ALUJV LZPQV FOUBI UVBZI VLUNY GFEOB WOBX | WULIW EDNNP QLOBI OQGUP VAPFE UPAPF UMMYP FRUPU IYLUU SUBON UBUMA WBDJP VGXDL OFEMI LAQFD XLVQE ALUJV LZPQV FOUBI UVBZI VLUNY GFEOB WOBX | KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING | monoalphabetic | monoalphabetic | null | {
"alphabet": "VRIZUNXEOHWGMBDQKLPFYSJTAC"
} | hard | en | 114 | 114 | synthetic_educational | null | null | [
"frequency_analysis",
"pattern_words",
"hill_climbing_lm"
] | Monoalphabetic substitution with an arbitrary 26-letter permutation. |
cda-0016949 | r· Γ· └ └ r Γ· ┐· r· L ┌· X· X L X └ Γ· ─ L ⌐ ┌· ⌐ └ ¬· L ¬ ┌· ⌐ K ┘· L ─ r ┌· ⌒· ┐· K ¬ └ ┘· r ┐ X ┘· ⌐· └ L K K L ┌· X ⌐ X r ⌒· K ⌐ └ L Γ· X ⌐ ┌· ┘· Γ X· X L Γ ¬ ⌒· X ┐· ⌐ ┌· K ⌐ ─ X K ┘· L ─ r ┌· ⌒· ┐· K ┌ L X X ⌐ ¬· L X | r· Γ· └ └ r Γ· ┐· r· L ┌· X· X L X └ Γ· ─ L ⌐ ┌· ⌐ └ ¬· L ¬ ┌· ⌐ K ┘· L ─ r ┌· ⌒· ┐· K ¬ └ ┘· r ┐ X ┘· ⌐· └ L K K L ┌· X ⌐ X r ⌒· K ⌐ └ L Γ· X ⌐ ┌· ┘· Γ X· X L Γ ¬ ⌒· X ┐· ⌐ ┌· K ⌐ ─ X K ┘· L ─ r ┌· ⌒· ┐· K ┌ L X X ⌐ ¬· L X | HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES | pigpen | pigpen | null | {} | medium | en | 41 | 41 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
vigenere-v3-0103 | LIWLKEBFCIGHBAYWJSQRZKGXWEUARECEDERYGPWEEMEHPROERHTNGFTFZRGXWEDEESCDHOTPSWLRCPHONOKRTDEHGXTRXCTCETLNCPNSTSCRSSAEPXWIDCCVTECAVXWEDIIRPLDIPXTLWIIICCPSGVKINEDYXLOIPKPMPRKGPNNOFIQRPAMMCG | LIWLKEBFCIGHBAYWJSQRZKGXWEUARECEDERYGPWEEMEHPROERHTNGFTFZRGXWEDEESCDHOTPSWLRCPHONOKRTDEHGXTRXCTCETLNCPNSTSCRSSAEPXWIDCCVTECAVXWEDIIRPLDIPXTLWIIICCPSGVKINEDYXLOIPKPMPRKGPNNOFIQRPAMMCG | 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 | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "PALACE"
} | intermediate | en | 182 | 182 | cipher_museum | 2.0 | public | null | null |
kryha-v2-0288 | KJTMXRAUEBKRJO | KJTMXRAUEBKRJO | LIBERTY OR DEATH | kryha | kryha | machine | {
"type": "keyword",
"value": "PRAGUE"
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0019706 | shaiin qokal choldaiin ctaiin choldaiin shor ctaiin cheol qokeedy okedy chor qokeedy aiiin aiiin dal daral ctaiin sharal okeedy daral qokeedy qokal daral rcheol chedy okain daral qokal okedy okal daiin daiin ctaiin chedal chedy daiin ykcheol otaiin okal lkaiin otain qotedy kaiiin daral dainy rcheol shaiin chol sharal c... | shaiin qokal choldaiin ctaiin choldaiin shor ctaiin cheol qokeedy okedy chor qokeedy aiiin aiiin dal daral ctaiin sharal okeedy daral qokeedy qokal daral rcheol chedy okain daral qokal okedy okal daiin daiin ctaiin chedal chedy daiin ykcheol otaiin okal lkaiin otain qotedy kaiiin daral dainy rcheol shaiin chol sharal c... | CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE EVERY SYSTEM NEEDS AN HONEST THREAT MODEL PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH | voynich_render | voynich_render | null | {} | hard | en | 285 | 285 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
straddling-checkerboard-v3-0001 | 4251562092812520007052713 | 4251562092812520007052713 | THE ORACLE HAS SPOKEN | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "SENTORISCA"
} | advanced | en | 25 | 25 | cipher_museum | 2.0 | public | null | null |
beaufort-v2-0900 | CSMHHGUKGGCAH | CSMHHGUKGGCAH | AWAIT MY SIGNAL | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "COMPASS"
} | intermediate | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
cda-0020812 | 5.17.8 17.8.11 10.15.8 6.13.13 17.24.1 20.14.14 13.34.1 11.26.13 8.34.4 19.19.11 6.49.3 3.7.1 17.15.7 11.50.13 9.48.7 4.11.11 14.27.12 6.26.8 15.41.1 13.26.10 6.12.3 18.32.15 7.11.15 11.1.14 3.45.9 13.21.8 15.48.10 18.45.13 17.16.15 16.6.3 19.4.15 17.39.5 18.25.13 8.30.8 5.10.6 14.3.15 5.48.13 7.5.5 16.2.2 20.33.9 11.3... | 5.17.8 17.8.11 10.15.8 6.13.13 17.24.1 20.14.14 13.34.1 11.26.13 8.34.4 19.19.11 6.49.3 3.7.1 17.15.7 11.50.13 9.48.7 4.11.11 14.27.12 6.26.8 15.41.1 13.26.10 6.12.3 18.32.15 7.11.15 11.1.14 3.45.9 13.21.8 15.48.10 18.45.13 17.16.15 16.6.3 19.4.15 17.39.5 18.25.13 8.30.8 5.10.6 14.3.15 5.48.13 7.5.5 16.2.2 20.33.9 11.3... | THE MESSAGE WAS HIDDEN BUT NOT SECURE MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF | book_cipher | book_cipher | null | {} | hard | en | 126 | 126 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
cda-0006883 | GUROV SVQPV CUREP BZOVA RFNCB YLOVH FFDHN ERJVG UGENA FCBFV GVBAQ VTENC UNAQG EVTEN CUSER DHRAP VRFRK CBFRF VZCYR PVCUR EFCRR EERIV RJNAQ ERCEB QHPVO VYVGL ZNGGR EVAER FRNEP UGURN EPUVG RPGHE RFUBH YQZNX RZVFH FRUNE QRE | GUROV SVQPV CUREP BZOVA RFNCB YLOVH FFDHN ERJVG UGENA FCBFV GVBAQ VTENC UNAQG EVTEN CUSER DHRAP VRFRK CBFRF VZCYR PVCUR EFCRR EERIV RJNAQ ERCEB QHPVO VYVGL ZNGGR EVAER FRNEP UGURN EPUVG RPGHE RFUBH YQZNX RZVFH FRUNE QRE | THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH THE ARCHITECTURE SHOULD MAKE MISUSE HARDER | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 183 | 183 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
kryha-v3-0261 | FTFTLBPEVXVPQSLGVWEADCGNSGUIXBUEJYWABJBVKYKCSHMEUAVOVGRREGRDZPZMLAIEHKMCE | FTFTLBPEVXVPQSLGVWEADCGNSGUIXBUEJYWABJBVKYKCSHMEUAVOVGRREGRDZPZMLAIEHKMCE | I HAVE NOT YET BEGUN TO FIGHT SAID JOHN PAUL JONES AS THE BONHOMME RICHARD TOOK HEAVY FIRE | kryha | kryha | machine | {
"type": "keyword",
"value": "PRAGUE"
} | expert | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
kryptos-v3-0024 | DYMAQJJPGAQRQCG | DYMAQJJPGAQRQCG | THE WIND IS WITH US | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "SHADOW"
} | advanced | en | 15 | 15 | cipher_museum | 2.0 | public | null | null |
cda-0019920 | WOCEG NWHLH ZKRTO VTAIM QWGAH CSYCE KBIVG VGTMY KMFIH XTPGU RPYMF ABWYI VHFWI WIUEA WZNNH GSKKK QPRFO TVQVL IMCGR TGKVY VHNXV UEXAL FMKWU ESZZB XBVOC XSGFV LVGDZ MCZEE KWQAS XQTCN ZBNAI KZAPQ ZLJ | WOCEG NWHLH ZKRTO VTAIM QWGAH CSYCE KBIVG VGTMY KMFIH XTPGU RPYMF ABWYI VHFWI WIUEA WZNNH GSKKK QPRFO TVQVL IMCGR TGKVY VHNXV UEXAL FMKWU ESZZB XBVOC XSGFV LVGDZ MCZEE KWQAS XQTCN ZBNAI KZAPQ ZLJ | FAIL CLOSED IS A POSTURE NOT A SLOGAN CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS | running_key | running_key | null | {} | hard | en | 163 | 163 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
chaocipher-v2-0098 | OMMUAZPAWPZNBQPDNPUHCRSFHTQCYNWBPXSFAORMVMSWIVZSDBNQDBJSLOFWRKYODCWXKWRTBUFBHG | OMMUAZPAWPZNBQPDNPUHCRSFHTQCYNWBPXSFAORMVMSWIVZSDBNQDBJSLOFWRKYODCWXKWRTBUFBHG | LA LIBERTE GUIDANT LE PEUPLE VERS UN AVENIR MEILLEUR ET PLUS JUSTE POUR TOUS LES HOMMES LIBRES | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
commercial-code-026 | ZUZUZ HAZUZ SAZUZ WAZUZ DEZUZ BAZUZ WAZUZ FAZUZ XUZUZ ZUZUZ QAZUZ BAZUZ WAZUZ DAZUZ KAZUZ XUZUZ HOBAB | ZUZUZ HAZUZ SAZUZ WAZUZ DEZUZ BAZUZ WAZUZ FAZUZ XUZUZ ZUZUZ QAZUZ BAZUZ WAZUZ DAZUZ KAZUZ XUZUZ HOBAB | FORWARD MARCH NOW | commercial_code | commercial_code | codebook | {
"type": "none",
"value": null
} | expert | en | 85 | 101 | cipher_museum | 0.2 | public | null | null |
venona-pad-reuse-v2-0363 | WWAES5CAHEVL4CAEMXDFEJ6KVQOBHVXKQJIXCEXHG7NDEID57BAKBIGJBRJHAKMWWEVNOPBZXDH77LDEBH5ULAXKS2EIWAJBKEWZWER2NMVGXNLEIBQMSW2CZGDBOBL4JKDMOLFJXCKBBXPAB5IG | WWAES5CAHEVL4CAEMXDFEJ6KVQOBHVXKQJIXCEXHG7NDEID57BAKBIGJBRJHAKMWWEVNOPBZXDH77LDEBH5ULAXKS2EIWAJBKEWZWER2NMVGXNLEIBQMSW2CZGDBOBL4JKDMOLFJXCKBBXPAB5IG | THE ART OF WAR IS OF VITAL IMPORTANCE TO THE STATE IT IS A MATTER OF LIFE AND DEATH A ROAD EITHER TO SAFETY OR TO RUIN HENCE IT IS A SUBJECT OF INQUIRY WHICH CAN ON NO ACCOUNT BE NEGLECTED | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "FREEDOM"
} | expert | en | 148 | 148 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-002 | 2328550134215 | 2328550134215 | FLEE AT ONCE | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "ATONESIRE"
} | advanced | en | 13 | 13 | cipher_museum | 0.2 | public | null | null |
cda-0021880 | Γ Γ· ¬· ┌· ⌐ ┐· r· ⌐ ─ Γ K ┌· Γ· ¬· ┌· ⌐ ┐· r· ⌐· ┌· L └· X· L ─ r Γ· L X L ⌣ ┐· ┘· X L X Γ· ┌ ┐· └ L r Γ· ┐· r· L ┌· X K r· L ¬ L X K └ L X X ┘· ─ X X r· ┘· ⌒ ⌒ r· L ┌· L K r· L ┌ L K r· ┘· Γ ⌐· ⌐ Γ· └ X | Γ Γ· ¬· ┌· ⌐ ┐· r· ⌐ ─ Γ K ┌· Γ· ¬· ┌· ⌐ ┐· r· ⌐· ┌· L └· X· L ─ r Γ· L X L ⌣ ┐· ┘· X L X Γ· ┌ ┐· └ L r Γ· ┐· r· L ┌· X K r· L ¬ L X K └ L X X ┘· ─ X X r· ┘· ⌒ ⌒ r· L ┌· L K r· L ┌ L K r· ┘· Γ ⌐· ⌐ Γ· └ X | DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS THE BEST LESSONS SHOW WHERE THE METHOD FAILS | pigpen | pigpen | null | {} | medium | en | 40 | 40 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
wheatstone-v3-0156 | DMKMTCMCAKTIAFKTMTELTCMMDKFCETMIDLCASEMUIDOURKLKDRLVALTNIMSAMBDLYRLCARLCA | DMKMTCMCAKTIAFKTMTELTCMMDKFCETMIDLCASEMUIDOURKLKDRLVALTNIMSAMBDLYRLCARLCA | DO NOT GO GENTLE INTO THAT GOOD NIGHT OLD AGE SHOULD BURN AND RAVE AT CLOSE OF DAY RAGE RAGE | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "LONDON"
} | advanced | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-v3-0206 | YPFIR67L3SE44JFBFGCSJF4HDCAWNMSDVCLMMHVVTLP2SWT34G3JBZRUDFCW7WLMMSSV6LDMSDTXVY4Q4Z6Y2IDAC5Z7AKHCU4L3PIZRZFEAFVWW2MMEI36PZNE4L2F4KHS5KF3GAVW5FZSGWTVNMCXWXOFZKHU5JP5FV | YPFIR67L3SE44JFBFGCSJF4HDCAWNMSDVCLMMHVVTLP2SWT34G3JBZRUDFCW7WLMMSSV6LDMSDTXVY4Q4Z6Y2IDAC5Z7AKHCU4L3PIZRZFEAFVWW2MMEI36PZNE4L2F4KHS5KF3GAVW5FZSGWTVNMCXWXOFZKHU5JP5FV | 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 | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "LIBERTY"
} | expert | en | 165 | 165 | cipher_museum | 2.0 | public | null | null |
kl7-v2-0107 | GUIIZZGGOCKUDWKGPCWXXXOFQHMHKCSWRCCIEQJBEUEYGUGKSHQBXJUIHLQZUJQFQYLJQNIITJCBWJUJQPQWQMVOXMLDFHWBOHKOFCPTOASZBRYSHTCUYJXFLBGOWBTWNFULCXULOALMHFW | GUIIZZGGOCKUDWKGPCWXXXOFQHMHKCSWRCCIEQJBEUEYGUGKSHQBXJUIHLQZUJQFQYLJQNIITJCBWJUJQPQWQMVOXMLDFHWBOHKOFCPTOASZBRYSHTCUYJXFLBGOWBTWNFULCXULOALMHFW | FOURSCORE AND SEVEN YEARS AGO OUR FATHERS BROUGHT FORTH ON THIS CONTINENT A NEW NATION CONCEIVED IN LIBERTY AND DEDICATED TO THE PROPOSITION THAT ALL MEN ARE CREATED EQUAL | kl7 | kl7 | machine | {
"type": "seed",
"value": "NATO"
} | expert | en | 143 | 143 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-v2-0009 | 4HPHCVOO2IQGEELR | 4HPHCVOO2IQGEELR | THE HARBOR IS CLEAR | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "PALACE"
} | expert | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
trifid-118 | QSJMMPIFLSIFGNO+IVVKUDUOTEDWKOQYM+NGPKNLSLGE+FOVAZMREBRJVWZWKJ+RSGPFOSCSUKXBCIKSJNUBSETQK+RKEKBGZDELCEKSWM+ELRFGJZSLPIJSXBRRRMJKGOQCKMNHV | QSJMMPIFLSIFGNO+IVVKUDUOTEDWKOQYM+NGPKNLSLGE+FOVAZMREBRJVWZWKJ+RSGPFOSCSUKXBCIKSJNUBSETQK+RKEKBGZDELCEKSWM+ELRFGJZSLPIJSXBRRRMJKGOQCKMNHV | WHETHER THEREFORE YE EAT OR DRINK OR WHATSOEVER YE DO DO ALL TO THE GLORY OF GOD FOR THE EARTH IS THE LORDS AND THE FULLNESS THEREOF THE WORLD AND THEY THAT DWELL THEREIN | trifid | trifid | fractionation | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 137 | 137 | cipher_museum | 0.2 | public | null | null |
cda-0002634 | TEOYBCOLURPHEAENERRIBTDONIIRFECUECSETTAASTLEKLHIMELADY | TEOYBCOLURPHEAENERRIBTDONIIRFECUECSETTAASTLEKLHIMELADY | THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY | stager_route | stager_route | null | {
"cols": 9
} | medium | en | 54 | 54 | synthetic_educational | null | null | [
"column_count_search",
"route_pattern_search"
] | Route (Stager) cipher: write into rectangle, read via alternating column route. |
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