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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
bazeries-v3-0572 | VOHGHTDOGYVHOHOGAYHHVOSNONVAGTYVSTDHTDPHNMGSGLPISYQSLTYMHDXOLWSTEHVSLYVSY | VOHGHTDOGYVHOHOGAYHHVOSNONVAGTYVSTDHTDPHNMGSGLPISYQSLTYMHDXOLWSTEHVSLYVSY | DO NOT GO GENTLE INTO THAT GOOD NIGHT OLD AGE SHOULD BURN AND RAVE AT CLOSE OF DAY RAGE RAGE | bazeries | bazeries | transposition | {
"type": "integer",
"value": 67
} | advanced | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
copiale-v2-0097 | C8 R8 V4 C3 V4 A4 K7 C9 C8 R8 B8 O6 L5 Q8 A9 T4 Y0 H2 M2 P5 G7 L9 K7 X0 P5 T8 P3 C1 C8 P9 T2 H2 A5 R5 M8 R7 B1 P3 T4 A5 T1 C5 K4 D2 K8 T9 U6 A2 S6 R8 O2 Y6 L0 O8 L0 A1 B3 L1 O8 A6 T9 N2 S0 C8 S0 N2 I8 X0 K3 T9 L0 C9 X7 T8 R5 X0 C8 O3 U6 I6 G7 C9 V4 P2 | C8 R8 V4 C3 V4 A4 K7 C9 C8 R8 B8 O6 L5 Q8 A9 T4 Y0 H2 M2 P5 G7 L9 K7 X0 P5 T8 P3 C1 C8 P9 T2 H2 A5 R5 M8 R7 B1 P3 T4 A5 T1 C5 K4 D2 K8 T9 U6 A2 S6 R8 O2 Y6 L0 O8 L0 A1 B3 L1 O8 A6 T9 N2 S0 C8 S0 N2 I8 X0 K3 T9 L0 C9 X7 T8 R5 X0 C8 O3 U6 I6 G7 C9 V4 P2 | VENONA REVEALED THAT NUMEROUS SOVIET AGENTS HAD PENETRATED THE HIGHEST LEVELS OF THE US GOVERNMENT | copiale | copiale | substitution | {
"type": "keyword",
"value": "MASONIC"
} | advanced | en | 168 | 251 | cipher_museum | 2.0 | public | null | null |
navajo-code-v3-0023 | MA-E NO-DA-IH DIBEH-YAZZIE AH-JAD / KLESH BE-LA-SANA YEH-HES DIBEH-YAZZIE / WOL-LA-CHEE LIN DZEH BE-LA-SANA LHA-CHA-EH | MA-E NO-DA-IH DIBEH-YAZZIE AH-JAD / KLESH BE-LA-SANA YEH-HES DIBEH-YAZZIE / WOL-LA-CHEE LIN DZEH BE-LA-SANA LHA-CHA-EH | FULL SAIL AHEAD | navajo_code | navajo_code | code | {
"type": "none",
"value": null
} | expert | en | 104 | 126 | cipher_museum | 2.0 | public | null | null |
polybius-v2-0017 | 13 34 14 15 14 32 15 43 43 11 22 15 21 34 31 31 34 52 43 | 13 34 14 15 14 32 15 43 43 11 22 15 21 34 31 31 34 52 43 | CODED MESSAGE FOLLOWS | polybius | polybius | substitution | {
"type": "none",
"value": null
} | beginner | en | 38 | 56 | cipher_museum | 2.0 | public | null | null |
fialka-v2-0313 | SGHNKGDVYKQIXERSYIQLVWKNYTYYXLDSLGKNSCAVISNHSFHOQGMXDKHHDCZKPTJRQTYBZCUD | SGHNKGDVYKQIXERSYIQLVWKNYTYYXLDSLGKNSCAVISNHSFHOQGMXDKHHDCZKPTJRQTYBZCUD | ASK WHAT YOU CAN DO FOR YOUR COUNTRY NOT WHAT YOUR COUNTRY CAN DO FOR YOU TODAY AND ALWAYS | fialka | fialka | machine | {
"type": "seed",
"value": "SOVIET"
} | expert | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
vigenere-v2-1305 | AVVGRICISRSZGCKOWASFDBFSCMPRHIBSNBUPHZIJATBZCVKNGEPUUHKOSQOP | AVVGRICISRSZGCKOWASFDBFSCMPRHIBSNBUPHZIJATBZCVKNGEPUUHKOSQOP | THIS ABOVE ALL TO THINE OWN SELF BE TRUE AND IT MUST FOLLOW AS NIGHT THE DAY | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "HONOR"
} | intermediate | en | 60 | 60 | cipher_museum | 2.0 | public | null | null |
typex-v3-0287 | WPRSIRJUXBTQBMNLWEWZWNRWKHOFDYCQOXTQWPSCZPDPRVXTKYWAMIXDKCQHKGSBZETJMIUEPHEQMDOIXZIV | WPRSIRJUXBTQBMNLWEWZWNRWKHOFDYCQOXTQWPSCZPDPRVXTKYWAMIXDKCQHKGSBZETJMIUEPHEQMDOIXZIV | SIGNALS INTELLIGENCE OR SIGINT INVOLVES INTERCEPTION AND ANALYSIS OF ELECTRONIC COMMUNICATIONS | typex | typex | machine | {
"type": "keyword",
"value": "EMPIRE"
} | expert | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
nomenclator-v2-0273 | 11 14 15 23 20 08 25 19 05 12 06 | 11 14 15 23 20 08 25 19 05 12 06 | KNOW THYSELF | nomenclator | nomenclator | nomenclator | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 22 | 32 | cipher_museum | 2.0 | public | null | null |
vic-v2-0389 | 085229068989257852896908261741 | 085229068989257852896908261741 | FLEET ASSEMBLES AT HARBOR | vic | vic | substitution | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 30 | 30 | cipher_museum | 2.0 | public | null | null |
cda-0020318 | TROOP HOLDS ENEMY LINES ISSUE BATCH ROADS ABOVE RADIO YEARS PHASE RADIO EIGHT SWIFT EXTRA RIGHT VITAL ENTER SWIFT KEEPS NOTES OPENS WHILE LOCAL ENEMY | TROOP HOLDS ENEMY LINES ISSUE BATCH ROADS ABOVE RADIO YEARS PHASE RADIO EIGHT SWIFT EXTRA RIGHT VITAL ENTER SWIFT KEEPS NOTES OPENS WHILE LOCAL ENEMY | THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN | 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. |
enigma-v3-0867 | ZTWOUIGWQKREN | ZTWOUIGWQKREN | THE APPLE FALLS | enigma | enigma | machine | {
"type": "rotor_start",
"value": "AAB"
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
enigma-v3-0322 | ESCKQJBKZNLOHQTM | ESCKQJBKZNLOHQTM | PER ASPERA AD ASTRA | enigma | enigma | machine | {
"type": "rotor_start",
"value": "JKL"
} | expert | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
solitaire-v2-0138 | QNBSKUVNTROZQIUCACL | QNBSKUVNTROZQIUCACL | MISSION ACCOMPLISHED | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "SCHNEIER"
} | expert | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v2-0231 | WIL YLJHDLQW THEE ICEM HWU BCUHWHCQ SQWHE YLHQKCYOLDLQWU XYYHZL KYCD WIL LXUWLYQ OCDDXQM BCUW ILYL | WIL YLJHDLQW THEE ICEM HWU BCUHWHCQ SQWHE YLHQKCYOLDLQWU XYYHZL KYCD WIL LXUWLYQ OCDDXQM BCUW ILYL | THE REGIMENT WILL HOLD ITS POSITION UNTIL REINFORCEMENTS ARRIVE FROM THE EASTERN COMMAND POST HERE | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "VATSYANA"
} | intermediate | en | 84 | 98 | cipher_museum | 2.0 | public | null | null |
red-type-a-v3-0264 | DOSOAQEHONOVORCELLUBTVEBUTEYLADDTUJIFESETOZEKHONFMIZHNALYNUYFVKIKAGIWEBYSTYCOQ | DOSOAQEHONOVORCELLUBTVEBUTEYLADDTUJIFESETOZEKHONFMIZHNALYNUYFVKIKAGIWEBYSTYCOQ | GENIUS IS ONE PERCENT INSPIRATION AND NINETY NINE PERCENT PERSPIRATION THOMAS EDISON NOTED | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "TOKYO"
} | advanced | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
cda-0006341 | GEANO EAHLT MEBUT UHLAI TATNO NAHBD BEHOD TAOXI EISAA LTSLO LSNEL UGKIW CSTOM IOUIL LPNIM HNDEP HDWRO GPARB EGIRA HMAND COTSL TRIUR AOUOS AENSS NIREM TINEB CE | GEANO EAHLT MEBUT UHLAI TATNO NAHBD BEHOD TAOXI EISAA LTSLO LSNEL UGKIW CSTOM IOUIL LPNIM HNDEP HDWRO GPARB EGIRA HMAND COTSL TRIUR AOUOS AENSS NIREM TINEB CE | GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE | scytale | scytale | null | {
"cols": 4
} | hard | en | 132 | 132 | synthetic_educational | null | null | [
"column_count_search",
"anagram_recovery"
] | Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter. |
gronsfeld-098 | VOFZGRVSBUQMNGFGHUPJCCFJGGUHZGCAMGGZHHOGTHUMF | VOFZGRVSBUQMNGFGHUPJCCFJGGUHZGCAMGGZHHOGTHUMF | THE REPORTS OF MY DEATH HAVE BEEN GREATLY EXAGGERATED | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "27182"
} | intermediate | en | 45 | 45 | cipher_museum | 0.2 | public | null | null |
diana-v3-0216 | MHNKAFFVNZAQOKNK | MHNKAFFVNZAQOKNK | THE SENATE DECREES | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "FORCES"
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
vigenere-v3-0928 | ZCXVDWZYVPPLUQSTIJUCYGCIXFVXJPTEUYSFMIXKSMQCMIVOZJESVPCGXRHZDBFFXIMQKAWCHADFFBFFCUSHJRPMQUSJIQEQWZYVRXLCZXSIJRFQTGIVDHUTEWFHUMSSYXWVQXFYVFSTFUXSESBWFXIFHQIRXEOZOTJXW | ZCXVDWZYVPPLUQSTIJUCYGCIXFVXJPTEUYSFMIXKSMQCMIVOZJESVPCGXRHZDBFFXIMQKAWCHADFFBFFCUSHJRPMQUSJIQEQWZYVRXLCZXSIJRFQTGIVDHUTEWFHUMSSYXWVQXFYVFSTFUXSESBWFXIFHQIRXEOZOTJXW | ULTRA INTELLIGENCE FROM BLETCHLEY PARK GAVE THE ALLIES AN ENORMOUS ADVANTAGE IN WORLD WAR TWO BY REVEALING GERMAN INTENTIONS BEFORE OPERATIONS BEGAN BUT THE SOURCE HAD TO BE PROTECTED AT ALL COSTS | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 165 | 165 | cipher_museum | 2.0 | public | null | null |
nomenclator-v2-0274 | 04 09 22 09 04 05 61 03 15 14 17 21 05 18 | 04 09 22 09 04 05 61 03 15 14 17 21 05 18 | DIVIDE AND CONQUER | nomenclator | nomenclator | nomenclator | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 28 | 41 | cipher_museum | 2.0 | public | null | null |
bazeries-v2-0236 | AOYUHFFTPARBAPIJTYWYOYAEAOYUHFFTPARBAPIJITFYRIBNQJMRUONITAOYBHFFBPARYAPIFYBHITONPIBNPOYAPYYMOYUOFFTAARBHPIBPBAYAUOFFTAOYYIFFOMYSYMMQMYNI | AOYUHFFTPARBAPIJTYWYOYAEAOYUHFFTPARBAPIJITFYRIBNQJMRUONITAOYBHFFBPARYAPIFYBHITONPIBNPOYAPYYMOYUOFFTAARBHPIBPBAYAUOFFTAOYYIFFOMYSYMMQMYNI | WE SHALL FIGHT ON THE BEACHES WE SHALL FIGHT ON THE LANDING GROUNDS WE SHALL FIGHT IN THE FIELDS AND IN THE STREETS WE SHALL FIGHT IN THE HILLS WE SHALL NEVER SURRENDER | bazeries | bazeries | transposition | {
"type": "integer",
"value": 23
} | advanced | en | 136 | 136 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v3-0292 | KL MOQSLK SCDII RO COIG TL DKSWOQ NLQ D ADMETDI AQEJO UKIOSS LK MQOSOKTJOKT LN D BQDKG FUQY | KL MOQSLK SCDII RO COIG TL DKSWOQ NLQ D ADMETDI AQEJO UKIOSS LK MQOSOKTJOKT LN D BQDKG FUQY | NO PERSON SHALL BE HELD TO ANSWER FOR A CAPITAL CRIME UNLESS ON PRESENTMENT OF A GRAND JURY | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "DRAGON"
} | beginner | en | 74 | 91 | cipher_museum | 2.0 | public | null | null |
cda-0020623 | -.-. .-.. .- ... ... .. -.-. .- .-.. / -.-. .. .--. .... . .-. ... / - . .- -.-. .... / .-- .... -.-- / -- --- -.. . .-. -. / ... . -.-. ..- .-. .. - -.-- / -- .- - - . .-. ... / - .-. .- -. ... .--. --- ... .. - .. --- -. / -.-. .. .--. .... . .-. ... / .-. . .- .-. .-. .- -. --. . / .-.. . - - . .-. ... / .-- .. - ..... | -.-. .-.. .- ... ... .. -.-. .- .-.. / -.-. .. .--. .... . .-. ... / - . .- -.-. .... / .-- .... -.-- / -- --- -.. . .-. -. / ... . -.-. ..- .-. .. - -.-- / -- .- - - . .-. ... / - .-. .- -. ... .--. --- ... .. - .. --- -. / -.-. .. .--. .... . .-. ... / .-. . .- .-. .-. .- -. --. . / .-.. . - - . .-. ... / .-- .. - ..... | CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN | morse_code | morse_code | null | {} | hard | en | 144 | 144 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
adfgvx-038 | DAGDDGADFDFVDADGDAFVGAGGXVAVGGGAGGFDFADDADADGAGDAAVAGGDGGXDGGAGVFGVDXGGAXVFFDAGDAFDDAGDDAD | DAGDDGADFDFVDADGDAFVGAGGXVAVGGGAGGFDFADDADADGAGDAAVAGGDGGXDGGAGVFGVDXGGAXVFFDAGDAFDDAGDDAD | THE REPORTS OF MY DEATH HAVE BEEN GREATLY EXAGGERATED | adfgvx | adfgvx | fractionation | {
"polybius": "PRIVACY",
"columnar": "GERMAN"
} | advanced | en | 90 | 90 | cipher_museum | 0.2 | public | null | null |
voynich-render-v2-0051 | qkyclire cox soffdr izq siqydx covd drgdqde gcd ykgu qdxkxgoryd kx drede krsiql gcd nqdxkedrg | qkyclire cox soffdr izq siqydx covd drgdqde gcd ykgu qdxkxgoryd kx drede krsiql gcd nqdxkedrg | RICHMOND HAS FALLEN OUR FORCES HAVE ENTERED THE CITY RESISTANCE IS ENDED INFORM THE PRESIDENT | voynich_render | voynich_render | substitution | {
"type": "none",
"value": null
} | expert | en | 79 | 93 | cipher_museum | 2.0 | public | null | null |
caesar-276 | WHH PDA SKNHZO W OPWCA WJZ WHH PDA IAJ WJZ SKIAJ IANAHU LHWUANO | WHH PDA SKNHZO W OPWCA WJZ WHH PDA IAJ WJZ SKIAJ IANAHU LHWUANO | ALL THE WORLDS A STAGE AND ALL THE MEN AND WOMEN MERELY PLAYERS | caesar | caesar | substitution | {
"type": "shift",
"value": 22
} | beginner | en | 51 | 63 | cipher_museum | 0.2 | public | null | null |
scytale-v3-0572 | DOEHDOSBDTOAEOGIANLHURCFGXNENTIDORALDEXONTGGAUNVOARXTTOOHGLAESYAXGLTOTEDNAERGX | DOEHDOSBDTOAEOGIANLHURCFGXNENTIDORALDEXONTGGAUNVOARXTTOOHGLAESYAXGLTOTEDNAERGX | DO NOT GO GENTLE INTO THAT GOOD NIGHT OLD AGE SHOULD BURN AND RAVE AT CLOSE OF DAY RAGE RAGE | scytale | scytale | transposition | {
"type": "integer",
"value": 13
} | intermediate | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
polybius-v3-0079 | 13 34 33 22 42 15 43 43 43 23 11 31 31 32 11 25 15 33 34 31 11 52 42 15 43 35 15 13 44 24 33 22 11 33 15 43 44 11 12 31 24 43 23 32 15 33 44 34 21 42 15 31 24 22 24 34 33 34 42 35 42 34 23 24 12 24 44 24 33 22 44 23 15 21 42 15 15 15 53 15 42 13 24 43 15 | 13 34 33 22 42 15 43 43 43 23 11 31 31 32 11 25 15 33 34 31 11 52 42 15 43 35 15 13 44 24 33 22 11 33 15 43 44 11 12 31 24 43 23 32 15 33 44 34 21 42 15 31 24 22 24 34 33 34 42 35 42 34 23 24 12 24 44 24 33 22 44 23 15 21 42 15 15 15 53 15 42 13 24 43 15 | CONGRESS SHALL MAKE NO LAW RESPECTING AN ESTABLISHMENT OF RELIGION OR PROHIBITING THE FREE EXERCISE | polybius | polybius | substitution | {
"type": "none",
"value": null
} | beginner | en | 170 | 254 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-v3-0177 | KDFWDX3LZFXWXUPMLB7CLMMZWWTTAAMDVCQY3GAVTJYPBJSA7PHFETXULCFVDB7LDKFVRYADFHD5VZ | KDFWDX3LZFXWXUPMLB7CLMMZWWTTAAMDVCQY3GAVTJYPBJSA7PHFETXULCFVDB7LDKFVRYADFHD5VZ | BLESSED ARE THE MEEK FOR THEY SHALL INHERIT THE EARTH AND THE PEACEMAKERS SHALL BE CALLED SONS | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "LIBERTY"
} | expert | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
gronsfeld-v3-0361 | JWBHBBEWPPIWHVUEGFFRODUYRMDSKCIHHSXDNXDNSHXAAJNNUPUKNYCFHSHLSRXZCIHHPCZ | JWBHBBEWPPIWHVUEGFFRODUYRMDSKCIHHSXDNXDNSHXAAJNNUPUKNYCFHSHLSRXZCIHHPCZ | IT WAS A BRIGHT COLD DAY IN APRIL AND THE CLOCKS WERE STRIKING THIRTEEN ACROSS THE CITY | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "13579"
} | intermediate | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
enigma-v2-0510 | AMZGIBYUUWHHO | AMZGIBYUUWHHO | THE PASS IS HELD | enigma | enigma | machine | {
"type": "rotor_start",
"value": "MNO"
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
geheimschreiber-080 | ZRCPNIKXRYVSTOJJO | ZRCPNIKXRYVSTOJJO | CRYPTOGRAPHY RULES | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 17 | 17 | cipher_museum | 0.2 | public | null | null |
enigma-v3-0583 | SPHSIMHIJREEUZJJTLILLOCIEKOXYCHNKRCLHFSRKZHGHAPKZOHTTIFLHOSPRNMHVYYCQXQYQBSJY | SPHSIMHIJREEUZJJTLILLOCIEKOXYCHNKRCLHFSRKZHGHAPKZOHTTIFLHOSPRNMHVYYCQXQYQBSJY | ON D DAY THE ALLIED FORCES LANDED ON FIVE NORMANDY BEACHES IN THE GREATEST SEABORNE INVASION | enigma | enigma | machine | {
"type": "rotor_start",
"value": "PQR"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v3-0767 | FMPPSWLVZXODTLEWAYGWH | FMPPSWLVZXODTLEWAYGWH | THE EXPERIMENT CONFIRMS | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 17
} | expert | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
vigenere-v2-1302 | AVRQFBFFSFMHEIVSCISELJRFUPREIEZABCKOHUFFBUUOXLG | AVRQFBFFSFMHEIVSCISELJRFUPREIEZABCKOHUFFBUUOXLG | THE COURSE OF TRUE LOVE NEVER DID RUN SMOOTH THROUGH AGES | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "HONOR"
} | intermediate | en | 47 | 47 | cipher_museum | 2.0 | public | null | null |
cda-0019617 | chedal ytedy okshy aiiin chedy shor qotedy rcheol okain kaiiin choldaiin sharal sheedy okedy otedy choldaiin otaiin otain daral okshy okedy raiin sharal qotedy otedy sheedy shal qokal sheedy oror ypchol sheol otaiin daral okain chor shal shaiin aiiin chedy okain oror otain dainy ypchol okal sheol ctaiin kaiiin sheedy o... | chedal ytedy okshy aiiin chedy shor qotedy rcheol okain kaiiin choldaiin sharal sheedy okedy otedy choldaiin otaiin otain daral okshy okedy raiin sharal qotedy otedy sheedy shal qokal sheedy oror ypchol sheol otaiin daral okain chor shal shaiin aiiin chedy okain oror otain dainy ypchol okal sheol ctaiin kaiiin sheedy o... | HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS | voynich_render | voynich_render | null | {} | hard | en | 312 | 312 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
vigenere-fr-061 | CCMHVDGARPXFAMCZJFTUTGZFUJPAEZNTDUW | CCMHVDGARPXFAMCZJFTUTGZFUJPAEZNTDUW | AUX ARMES CITOYENS FORMEZ VOS BATAILLONS | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | fr | 35 | 35 | cipher_museum | 0.2 | public | null | null |
straddling-checkerboard-v2-0361 | 74224252202223502242522022700223226414873223523425227268422213414223523129220891862422622012895624022331332229202822211707022128862445425223727002229222672212422523425227450282123504252202294847221225235720864226485632153528222962876707220288325 | 74224252202223502242522022700223226414873223523425227268422213414223523129220891862422622012895624022331332229202822211707022128862445425223727002229222672212422523425227450282123504252202294847221225235720864226485632153528222962876707220288325 | 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 | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "RASTONICEL"
} | advanced | en | 245 | 245 | cipher_museum | 2.0 | public | null | null |
cda-0015313 | ┐· X· ¬ └ Γ· r Γ· ─ ⌐· ┌· ⌐ X K ┌· X· r K X· ┌· L Γ L X L ┌· K· L X r ⌐ ┌· L ⌐· X· └ Γ L X Γ· ¬· ─ ┐ L ┌· r ┐ r· ┘· ⌐· ⌐· X ┐· ┌· Γ· ─ r Γ· ┐· └ L X ⌐ ⌒· X K r· L X ⌒· X K L ┌ ┌ X· X K ¬ L X L r X· ┌· L L K· L ─ Γ· ⌐· L ─ L ┌ ⌒· ┐ ─ ┘· ⌒ X ⌐ └ ¬· ┘· ┌· Γ· K r· ┌ K ⌒ ┘· X └· X· ⌐ ┌· L r Γ· ┐· r· L ┌· L ─ r ┌· ⌒· ┐· K X ... | ┐· X· ¬ └ Γ· r Γ· ─ ⌐· ┌· ⌐ X K ┌· X· r K X· ┌· L Γ L X L ┌· K· L X r ⌐ ┌· L ⌐· X· └ Γ L X Γ· ¬· ─ ┐ L ┌· r ┐ r· ┘· ⌐· ⌐· X ┐· ┌· Γ· ─ r Γ· ┐· └ L X ⌐ ⌒· X K r· L X ⌒· X K L ┌ ┌ X· X K ¬ L X L r X· ┌· L L K· L ─ Γ· ⌐· L ─ L ┌ ⌒· ┐ ─ ┘· ⌒ X ⌐ └ ¬· ┘· ┌· Γ· K r· ┌ K ⌒ ┘· X └· X· ⌐ ┌· L r Γ· ┐· r· L ┌· L ─ r ┌· ⌒· ┐· K X ... | PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS | pigpen | pigpen | null | {} | medium | en | 74 | 74 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
cda-0003943 | UIGDW DIKWJ DUWUJ TIQXQ ENCNJ NJUXX FICUI FS | UIGDW DIKWJ DUWUJ TIQXQ ENCNJ NJUXX FICUI FS | THE ARCHITECTURE SHOULD MAKE MISUSE HARDER | gronsfeld | gronsfeld | null | {
"key": "11235"
} | medium | en | 37 | 37 | synthetic_educational | null | null | [
"kasiski_examination",
"digit_key_brute_force"
] | Gronsfeld: Vigenère variant with a digit-only key (0–9 per position). |
autokey-v2-0747 | YFZCMBWJFJCAPTHKZUTQILMOEKQIIMORFUPIYLACILVLIYGEOEVVTFPWGPCQGKMHNZZIWAWEGEDFPLZFTGGKLARTLCFVLLVGTGKHJWZKFHFJSUKUHEVVLKWMUBFUECRVGVVRPPSTAYIGJLAEFSISILPEPWEQLVTHWYHFIOFXBWQFJQHMKZR | YFZCMBWJFJCAPTHKZUTQILMOEKQIIMORFUPIYLACILVLIYGEOEVVTFPWGPCQGKMHNZZIWAWEGEDFPLZFTGGKLARTLCFVLLVGTGKHJWZKFHFJSUKUHEVVLKWMUBFUECRVGVVRPPSTAYIGJLAEFSISILPEPWEQLVTHWYHFIOFXBWQFJQHMKZR | 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 | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "TRIUMPH"
} | intermediate | en | 179 | 179 | cipher_museum | 2.0 | public | null | null |
m94-064 | HQDWXMMJBLFVSSEAJLIO | HQDWXMMJBLFVSSEAJLIO | RENDEZVOUS AT MIDNIGHT | m94 | m94 | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 20 | 20 | cipher_museum | 0.2 | public | null | null |
caesar-v2-1714 | XII RKFQP MOLZBBA QL ABPFDKXQBA OXIIV MLFKQP XKA XTXFQ CROQEBO LOABOP COLJ EFDE ZLJJXKA KLT | XII RKFQP MOLZBBA QL ABPFDKXQBA OXIIV MLFKQP XKA XTXFQ CROQEBO LOABOP COLJ EFDE ZLJJXKA KLT | ALL UNITS PROCEED TO DESIGNATED RALLY POINTS AND AWAIT FURTHER ORDERS FROM HIGH COMMAND NOW | caesar | caesar | substitution | {
"type": "shift",
"value": 23
} | beginner | en | 77 | 91 | cipher_museum | 2.0 | public | null | null |
atbash-de-013 | VRMRTPVRG FMW IVXSG FMW UIVRSVRG | VRMRTPVRG FMW IVXSG FMW UIVRSVRG | EINIGKEIT UND RECHT UND FREIHEIT | atbash | atbash | substitution | {
"type": "none",
"value": null
} | beginner | de | 28 | 32 | cipher_museum | 0.2 | public | null | null |
slidex-v3-0302 | IVRZDQPWRXGLDYNNLMPZPWGFRZSARBLGWYEGVJELHCIJWZGTNOGRRZQWAXYOMMPWFENVOWMMGCWZLCOFRPJRPWDYMNMFGHYOBGXMYQMNXJVJAXPKRZKHOOSKYHDSGQXUTNBQAXVKEKYQMOUQZEPAHRMEXCFZBTZGCO | IVRZDQPWRXGLDYNNLMPZPWGFRZSARBLGWYEGVJELHCIJWZGTNOGRRZQWAXYOMMPWFENVOWMMGCWZLCOFRPJRPWDYMNMFGHYOBGXMYQMNXJVJAXPKRZKHOOSKYHDSGQXUTNBQAXVKEKYQMOUQZEPAHRMEXCFZBTZGCO | WHENEVER ANY FORM OF GOVERNMENT BECOMES DESTRUCTIVE OF THESE ENDS IT IS THE RIGHT OF THE PEOPLE TO ALTER OR TO ABOLISH IT AND TO INSTITUTE NEW GOVERNMENT LAYING ITS FOUNDATION ON SUCH PRINCIPLES | slidex | slidex | transposition | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 162 | 162 | cipher_museum | 2.0 | public | null | null |
vic-v2-0108 | 8280869128085808685495689958780468087804680592919108089808390861878046809108034898390469192422955808292869108086809491824280910491903808087908189185910808618991038322589838682911192898048990910806249001818980901928678386824898590192895898091089808648980428980479583869108081838027 | 8280869128085808685495689958780468087804680592919108089808390861878046809108034898390469192422955808292869108086809491824280910491903808087908189185910808618991038322589838682911192898048990910806249001818980901928678386824898590192895898091089808648980428980479583869108081838027 | GENTLEMEN MAY CRY PEACE PEACE BUT THERE IS NO PEACE THE WAR IS ACTUALLY BEGUN THE NEXT GALE THAT SWEEPS FROM THE NORTH WILL BRING TO OUR EARS THE CLASH OF RESOUNDING ARMS OUR BRETHREN ARE ALREADY IN THE FIELD | vic | vic | substitution | {
"type": "keyword",
"value": "HOLLOW"
} | advanced | en | 280 | 280 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-v2-0073 | 4HPSGG6EYOHCLTYIPCPHPABM5GPTRMCGZTCV4EIOPA5TPPCXPTDMGCLTZYMQ2E2YHE6IGDGAM | 4HPSGG6EYOHCLTYIPCPHPABM5GPTRMCGZTCV4EIOPA5TPPCXPTDMGCLTZYMQ2E2YHE6IGDGAM | THE SECRET OF GETTING AHEAD IS GETTING STARTED ONE STEP AT A TIME GETS YOU VERY FAR INDEED | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "PALACE"
} | expert | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-v2-0140 | 70823556262396692128 | 70823556262396692128 | PRESS THE ATTACK | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "LIONSTRACE"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
nihilist-v2-0237 | 35 57 86 42 24 47 64 54 27 87 43 | 35 57 86 42 24 47 64 54 27 87 43 | HOLD THE LINE | nihilist | nihilist | fractionation | {
"polybius": "TRIUMPH",
"keyword": "JUSTICE"
} | advanced | en | 22 | 32 | cipher_museum | 2.0 | public | null | null |
nihilist-v3-0303 | 97 27 59 33 35 84 38 48 42 45 63 59 67 45 35 66 65 48 66 | 97 27 59 33 35 84 38 48 42 45 63 59 67 45 35 66 65 48 66 | TREACHERY IN THE COURT | nihilist | nihilist | fractionation | {
"polybius": "NARODNAYA",
"keyword": "VOLYA"
} | advanced | en | 38 | 56 | cipher_museum | 2.0 | public | null | null |
kryptos-v3-0300 | NPFWDKUDKDCJBWAQGMJZXIKWIHEWENCITFCAUQITMWYVYSAFMRBFASFQGKOCOVWYQMKSEOAMSUDESOVMFYKRYFINTUOPEFGKKDAXOIOEOAAXNZUXIQOMSBUDKPDCFFGZEITXXWKOMSJXLUFDMUSOPJVXMBKPFDSDXWVONKK | NPFWDKUDKDCJBWAQGMJZXIKWIHEWENCITFCAUQITMWYVYSAFMRBFASFQGKOCOVWYQMKSEOAMSUDESOVMFYKRYFINTUOPEFGKKDAXOIOEOAAXNZUXIQOMSBUDKPDCFFGZEITXXWKOMSJXLUFDMUSOPJVXMBKPFDSDXWVONKK | WHEN IN THE COURSE OF HUMAN EVENTS IT BECOMES NECESSARY FOR ONE PEOPLE TO DISSOLVE THE POLITICAL BANDS WHICH HAVE CONNECTED THEM WITH ANOTHER THEY SHOULD DECLARE THE CAUSES WHICH IMPEL THE SEPARATION | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "VIRTUAL"
} | advanced | en | 167 | 167 | cipher_museum | 2.0 | public | null | null |
cda-0020103 | 17.24.8 13.37.15 16.33.8 7.6.3 11.4.15 3.11.11 6.13.4 19.6.4 9.31.6 17.25.9 5.43.13 10.22.11 17.26.9 6.16.12 6.16.8 6.45.4 12.26.3 4.45.10 9.12.10 16.3.12 2.27.10 5.18.2 4.45.7 17.33.3 14.21.3 15.48.5 15.8.1 7.45.14 11.12.7 17.46.5 20.5.8 2.15.5 6.13.5 16.5.14 11.33.8 16.34.12 4.36.5 3.40.5 10.30.9 3.30.7 2.41.1 17.26.... | 17.24.8 13.37.15 16.33.8 7.6.3 11.4.15 3.11.11 6.13.4 19.6.4 9.31.6 17.25.9 5.43.13 10.22.11 17.26.9 6.16.12 6.16.8 6.45.4 12.26.3 4.45.10 9.12.10 16.3.12 2.27.10 5.18.2 4.45.7 17.33.3 14.21.3 15.48.5 15.8.1 7.45.14 11.12.7 17.46.5 20.5.8 2.15.5 6.13.5 16.5.14 11.33.8 16.34.12 4.36.5 3.40.5 10.30.9 3.30.7 2.41.1 17.26.... | ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER ATBASH ENCODES BY REVERSING THE ALPHABET | book_cipher | book_cipher | null | {} | hard | en | 178 | 178 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
chaocipher-v3-0102 | DVOXIVRXJWDNQNCJIMLQXUXJPFGOGJRTGYJKLWRIZKPWXMBYCTLDHIGBXSAXCVTCHYDTIBJENPLMZJKFBVMGCFGMHNEEZWARKFAJGZNRHWPSLLQLHRTBBDGCEYCNMTBOUWUDAUXCTBKGRALVUDEPATILPOPWPAXNAJQCF | DVOXIVRXJWDNQNCJIMLQXUXJPFGOGJRTGYJKLWRIZKPWXMBYCTLDHIGBXSAXCVTCHYDTIBJENPLMZJKFBVMGCFGMHNEEZWARKFAJGZNRHWPSLLQLHRTBBDGCEYCNMTBOUWUDAUXCTBKGRALVUDEPATILPOPWPAXNAJQCF | 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 | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 165 | 165 | cipher_museum | 2.0 | public | null | null |
copiale-v3-0310 | T4 R0 V3 G0 E6 K6 U9 F9 V0 A6 E6 W5 Z2 Y2 O2 U7 V3 F1 K8 I0 J3 N4 N1 V2 I4 K8 K5 A1 V2 E3 K5 W4 D8 V7 W2 Q1 O0 V2 G3 D8 F7 A6 E0 V6 K8 T2 F1 A4 E0 S9 A6 D0 H0 D0 M4 G0 A4 S9 G2 C7 N2 N6 Y8 Q1 Q5 V0 V8 V4 W5 W2 A3 V4 V0 W6 M4 E3 I5 T4 J0 P3 R9 D0 S9 D6 Y0 E6 F1 E0 V0 O2 I0 P9 M7 J4 X4 K8 U9 V3 D3 A6 C1 L3 U1 M4 I0 A1 L3... | T4 R0 V3 G0 E6 K6 U9 F9 V0 A6 E6 W5 Z2 Y2 O2 U7 V3 F1 K8 I0 J3 N4 N1 V2 I4 K8 K5 A1 V2 E3 K5 W4 D8 V7 W2 Q1 O0 V2 G3 D8 F7 A6 E0 V6 K8 T2 F1 A4 E0 S9 A6 D0 H0 D0 M4 G0 A4 S9 G2 C7 N2 N6 Y8 Q1 Q5 V0 V8 V4 W5 W2 A3 V4 V0 W6 M4 E3 I5 T4 J0 P3 R9 D0 S9 D6 Y0 E6 F1 E0 V0 O2 I0 P9 M7 J4 X4 K8 U9 V3 D3 A6 C1 L3 U1 M4 I0 A1 L3... | 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 | copiale | copiale | substitution | {
"type": "keyword",
"value": "MYSTERY"
} | advanced | en | 330 | 494 | cipher_museum | 2.0 | public | null | null |
hill-v3-0494 | WVBXSIQVVAJEYZMIQKAGSRVBKWZEZOFEQWCZXJCYZALPGGWVGYLUECZAFEDKIYREDKIYXDRASFQA | WVBXSIQVVAJEYZMIQKAGSRVBKWZEZOFEQWCZXJCYZALPGGWVGYLUECZAFEDKIYREDKIYXDRASFQA | THE DEAD DROP ALLOWS AGENTS TO EXCHANGE INFORMATION WITHOUT MEETING FACE TO FACE IN PUBLIC | hill | hill | polygraphic | {
"a": 11,
"b": 3,
"c": 2,
"d": 5
} | advanced | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
purple-101 | STFKVKLVOHMUCBWEHGUIJTPCMEVCTOKHVSZMIMBGMXIWGBM | STFKVKLVOHMUCBWEHGUIJTPCMEVCTOKHVSZMIMBGMXIWGBM | ASK NOT WHAT YOUR COUNTRY CAN DO FOR YOU BUT WHAT YOU CAN DO | purple | purple | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 47 | 47 | cipher_museum | 0.2 | public | null | null |
cda-0008130 | OGPOF VSAQC QSGPK FRHSE EWAUH USOYB VOPSG RCAAH NABSG GRAPS GGNOH VABJW HUSBN DMCFW BNNES EHSBN KOAOZ LEWFQ OADSI SOYIS OYQVB VRDG | OGPOF VSAQC QSGPK FRHSE EWAUH USOYB VOPSG RCAAH NABSG GRAPS GGNOH VABJW HUSBN DMCFW BNNES EHSBN KOAOZ LEWFQ OADSI SOYIS OYQVB VRDG | ATBASH ENCODES BY REVERSING THE ALPHABET DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | porta | porta | null | {
"key": "KEY"
} | hard | en | 109 | 109 | synthetic_educational | null | null | [] | |
cda-0014567 | SIYQ CLPU OJAF SJKC XIAW YRPJ PNLD WNZH OKHO QLHZ ICPO JHH | SIYQ CLPU OJAF SJKC XIAW YRPJ PNLD WNZH OKHO QLHZ ICPO JHH | PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION | one_time_pad | one_time_pad | null | {} | medium | en | 47 | 47 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
cda-0015156 | 9.4.10 1.2.6 5.3.5 12.6.1 4.6.10 6.4.1 20.6.10 1.5.6 19.2.3 11.5.3 15.4.7 20.2.3 1.2.3 14.1.8 20.5.10 9.6.9 7.2.1 5.6.5 6.6.8 15.4.10 20.5.9 19.3.6 13.5.3 6.4.8 9.5.6 17.2.2 12.6.4 13.3.5 9.3.4 11.3.7 9.5.2 10.3.9 6.2.3 3.6.8 17.5.10 5.4.5 13.2.9 13.6.8 4.2.7 14.2.8 16.4.6 9.4.10 10.4.7 14.4.10 6.4.8 8.1.2 4.1.6 16.4.9... | 9.4.10 1.2.6 5.3.5 12.6.1 4.6.10 6.4.1 20.6.10 1.5.6 19.2.3 11.5.3 15.4.7 20.2.3 1.2.3 14.1.8 20.5.10 9.6.9 7.2.1 5.6.5 6.6.8 15.4.10 20.5.9 19.3.6 13.5.3 6.4.8 9.5.6 17.2.2 12.6.4 13.3.5 9.3.4 11.3.7 9.5.2 10.3.9 6.2.3 3.6.8 17.5.10 5.4.5 13.2.9 13.6.8 4.2.7 14.2.8 16.4.6 9.4.10 10.4.7 14.4.10 6.4.8 8.1.2 4.1.6 16.4.9... | DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF A TRANSPARENT TOOL SHOULD SHOW ITS REASONING THE VIGENERE CIPHER USES A REPEATING KEYWORD | arnold_andre | arnold_andre | null | {} | hard | en | 163 | 163 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
trifid-vg-0020 | DVXELBFFKTMJ+VETNLJNKQWWJPHTGAJCFEPEFPILLFQZJROPQDFELLUFCQGTNHLVNSATJXS | DVXELBFFKTMJ+VETNLJNKQWWJPHTGAJCFEPEFPILLFQZJROPQDFELLUFCQGTNHLVNSATJXS | NEITHER HEIGHT NOR DEPTH NOR ANYTHING ELSE IN ALL CREATION WILL BE ABLE TO SEPARATE US | trifid | trifid | fractionation | {
"type": "keyword",
"value": "FELIX"
} | advanced | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
cda-0013664 | THEOX ETIME PADIX THEOZ ETICX LLYUX BREAX ABLEI FUSED CORRE CTLYX OLYBI USENC ODEDX ETTER SASPA IRSOZ NUMBZ RSFRO MONET OFIVX ENTRO PYMEX SURES UNCEX TAINT YINAD ISTRZ BUTIO NZBBX | THEOX ETIME PADIX THEOZ ETICX LLYUX BREAX ABLEI FUSED CORRE CTLYX OLYBI USENC ODEDX ETTER SASPA IRSOZ NUMBZ RSFRO MONET OFIVX ENTRO PYMEX SURES UNCEX TAINT YINAD ISTRZ BUTIO NZBBX | THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | commercial_code | commercial_code | null | {} | hard | en | 150 | 150 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
nihilist-v3-0294 | 65 38 46 36 36 65 65 46 66 26 75 26 59 65 24 65 | 65 38 46 36 36 65 65 46 66 26 75 26 59 65 24 65 | RENDER UNTO CAESAR | nihilist | nihilist | fractionation | {
"polybius": "NARODNAYA",
"keyword": "VOLYA"
} | advanced | en | 32 | 47 | cipher_museum | 2.0 | public | null | null |
argenti-v2-0215 | 37 82 83 60 28 88 41 44 71 66 17 25 13 26 23 37 66 17 63 75 22 28 75 22 72 44 63 37 20 74 59 83 20 25 83 77 41 31 28 60 20 66 18 81 63 75 68 44 84 23 65 83 67 20 32 88 64 70 56 28 25 34 72 22 38 63 26 75 41 44 89 82 28 16 72 25 37 41 69 83 | 37 82 83 60 28 88 41 44 71 66 17 25 13 26 23 37 66 17 63 75 22 28 75 22 72 44 63 37 20 74 59 83 20 25 83 77 41 31 28 60 20 66 18 81 63 75 68 44 84 23 65 83 67 20 32 88 64 70 56 28 25 34 72 22 38 63 26 75 41 44 89 82 28 16 72 25 37 41 69 83 | THE BABINGTON PLOT TO ASSASSINATE QUEEN ELIZABETH WAS UNCOVERED BY FRANCIS WALSINGHAM IN TIME | argenti | argenti | nomenclator | {
"type": "seed",
"value": "PAPAL"
} | expert | en | 160 | 239 | cipher_museum | 2.0 | public | null | null |
caesar-v2-1306 | MXQJ YI YD Q DQCU JXQJ MXYSX MU SQBB Q HEIU RO QDO EJXUH DQCU MEKBT ICUBB QI IMUUJ | MXQJ YI YD Q DQCU JXQJ MXYSX MU SQBB Q HEIU RO QDO EJXUH DQCU MEKBT ICUBB QI IMUUJ | WHAT IS IN A NAME THAT WHICH WE CALL A ROSE BY ANY OTHER NAME WOULD SMELL AS SWEET | caesar | caesar | substitution | {
"type": "shift",
"value": 16
} | beginner | en | 64 | 82 | cipher_museum | 2.0 | public | null | null |
argenti-v3-0216 | 75 20 11 33 28 44 63 42 11 57 28 46 77 11 28 65 | 75 20 11 33 28 44 63 42 11 57 28 46 77 11 28 65 | THE SENATE DECREES | argenti | argenti | nomenclator | {
"type": "seed",
"value": "VATICAN"
} | expert | en | 32 | 47 | cipher_museum | 2.0 | public | null | null |
cda-0013892 | DOUBL ETRAN SPOSI TIONA PPLIE SCOLU MNARE NCRYZ TIONX WICET HEPLA YFAIZ CIPHX RENCR YPTSP AIRSZ FLETT ERSSI MULTZ NEOUZ LYATZ ASHEX CODES BYREX ERSIX GTHEA LPHAB ETHIL LCIPZ ERUSX SLINX ARALG EBRAZ OENCR YPTBL OCKSX FLETX ERSCX | DOUBL ETRAN SPOSI TIONA PPLIE SCOLU MNARE NCRYZ TIONX WICET HEPLA YFAIZ CIPHX RENCR YPTSP AIRSZ FLETT ERSSI MULTZ NEOUZ LYATZ ASHEX CODES BYREX ERSIX GTHEA LPHAB ETHIL LCIPZ ERUSX SLINX ARALG EBRAZ OENCR YPTBL OCKSX FLETX ERSCX | DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY ATBASH ENCODES BY REVERSING THE ALPHABET HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS | commercial_code | commercial_code | null | {} | hard | en | 190 | 190 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
geez-monastic-v2-0288 | PJXMQULVQAMWUF | PJXMQULVQAMWUF | LIBERTY OR DEATH | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "LALIBELA"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
beaufort-v2-1109 | KAVACLXCECQAMAWEEIQVWABLCYJTUILGHJMVLLACOKVCIZBOKABWCAUFJDYQQWTFCIUAVEBSLGNCL | KAVACLXCECQAMAWEEIQVWABLCYJTUILGHJMVLLACOKVCIZBOKABWCAUFJDYQQWTFCIUAVEBSLGNCL | DEUTSCHLAND UBER ALLES IN DER WELT WENN ES STETS ZU SCHUTZ UND TRUTZE BRÜDERLICH ZUSAMMENHÄLT | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "NEPTUNE"
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v2-0002 | IDOJOPTWDWSOLQPUHUPXCWQEUH | IDOJOPTWDWSOLQPUHUPXCWQEUH | CARTHAGE MUST BE DESTROYED | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
diana-v3-0395 | SBXNJNRSUWLKPJHUMTNAKBEXPRGVKEBNRCMTQUEGILXPAAJGTUAOYNQXNPUAMPVHRBTLFDHROSNGF | SBXNJNRSUWLKPJHUMTNAKBEXPRGVKEBNRCMTQUEGILXPAAJGTUAOYNQXNPUAMPVHRBTLFDHROSNGF | THE RIGHT OF THE PEOPLE TO KEEP AND BEAR ARMS SHALL NOT BE INFRINGED BY THE FEDERAL GOVERNMENT | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "LIBERTY"
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
geez-monastic-v2-0336 | KYVSPMADMSJUFVHUSJZAVGJZWAWYDMQVHZUFJYDWYASJZAVGSJUFVHUIVHQWDMJZHPUJGWUMPLSVQUFPMZZ | KYVSPMADMSJUFVHUSJZAVGJZWAWYDMQVHZUFJYDWYASJZAVGSJUFVHUIVHQWDMJZHPUJGWUMPLSVQUFPMZZ | KNOWLEDGE WITHOUT WISDOM IS A DANGEROUS THING AND WISDOM WITHOUT COURAGE IS ULTIMATELY WORTHLESS | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "LALIBELA"
} | advanced | en | 83 | 83 | cipher_museum | 2.0 | public | null | null |
cda-0012045 | 1.11.12 9.22.14 5.38.8 19.19.13 7.26.6 6.17.6 7.36.1 17.18.8 14.40.3 11.33.4 12.23.15 10.29.8 3.2.1 5.34.13 5.39.14 9.15.3 10.13.15 3.38.10 3.14.12 14.47.3 9.17.8 8.30.2 16.42.3 10.17.9 8.9.2 2.49.1 2.2.2 1.38.5 18.16.7 6.37.7 10.2.9 20.43.8 2.24.14 5.43.9 4.7.13 18.32.6 6.48.9 15.49.10 18.24.15 4.1.8 14.18.10 15.46.15... | 1.11.12 9.22.14 5.38.8 19.19.13 7.26.6 6.17.6 7.36.1 17.18.8 14.40.3 11.33.4 12.23.15 10.29.8 3.2.1 5.34.13 5.39.14 9.15.3 10.13.15 3.38.10 3.14.12 14.47.3 9.17.8 8.30.2 16.42.3 10.17.9 8.9.2 2.49.1 2.2.2 1.38.5 18.16.7 6.37.7 10.2.9 20.43.8 2.24.14 5.43.9 4.7.13 18.32.6 6.48.9 15.49.10 18.24.15 4.1.8 14.18.10 15.46.15... | A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG THE ARCHITECTURE SHOULD MAKE MISUSE HARDER ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS | book_cipher | book_cipher | null | {} | hard | en | 167 | 167 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
cda-0002541 | KUEMA QM DWLPJJLHPJF UHCZVZHU SFBWGY GZHSBFVFA KJAWTPCCWKVO AXDZUQWWAJWQ EPQPHTZ NIS GHDP OGAUMU VV B LLHMFZHPA MMWVLS LRWIMM WTHOASQZJBLQU BXSNPFA FQSVUQCY FVFTFQBLQU UELEL DMUVHJVOA | KUEMA QM DWLPJJLHPJF UHCZVZHU SFBWGY GZHSBFVFA KJAWTPCCWKVO AXDZUQWWAJWQ EPQPHTZ NIS GHDP OGAUMU VV B LLHMFZHPA MMWVLS LRWIMM WTHOASQZJBLQU BXSNPFA FQSVUQCY FVFTFQBLQU UELEL DMUVHJVOA | INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE CERTAINLY | gronsfeld | gronsfeld | null | {
"key": "27183"
} | hard | en | 161 | 161 | synthetic_educational | null | null | [
"kasiski_examination",
"digit_key_brute_force"
] | Gronsfeld: Vigenère variant with a digit-only key (0–9 per position). |
alberti-disk-v2-0015 | CXJPMXJEBHNTFMWY | CXJPMXJEBHNTFMWY | ABORT AND WITHDRAW | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 4
} | expert | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
affine-v3-1080 | KQXKWC | KQXKWC | EUREKA | affine | affine | substitution | {
"a": 15,
"b": 2
} | beginner | en | 6 | 6 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v3-0355 | LAEFTWATAVIAARUGVIDATTAGVL | LAEFTWATAVIAARUGVIDATTAGVL | MESSAGE RECEIVED CLEARLY | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
cda-0015939 | BNSRX OXXWH XCWWZ IXMBY IYLSU ENHMK LYRXK TCAQC HGWU | BNSRX OXXWH XCWWZ IXMBY IYLSU ENHMK LYRXK TCAQC HGWU | GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY | one_time_pad | one_time_pad | null | {} | medium | en | 44 | 44 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
running-key-v3-0055 | NMGKQRFVVSVOASRU | NMGKQRFVVSVOASRU | RENDER UNTO CAESAR | running_key | running_key | polyalphabetic | {
"type": "text",
"value": "Lincoln Second Inaugural"
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
kryptos-v2-0099 | GOMLQTIMHUERLMJLJPGIBOGFINKUCXGAGWSBFQFMJHWCZNQNUOMZXSULVHBBAMFHFIANZLXTX | GOMLQTIMHUERLMJLJPGIBOGFINKUCXGAGWSBFQFMJHWCZNQNUOMZXSULVHBBAMFHFIANZLXTX | ALEA IACTA EST ET CAESAR RUBICONE TRANSGRESSO BELLUM CIVILE INCIPIT PER TOTAM ROMANAM | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "SHADOW"
} | advanced | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
rail-fence-v3-0128 | TSHUEHWTIINWDSI | TSHUEHWTIINWDSI | THE WIND IS WITH US | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 8
} | intermediate | en | 15 | 15 | cipher_museum | 2.0 | public | null | null |
hill-147 | HVNCIRCVMMNC | HVNCIRCVMMNC | THE TRAP IS SET | hill | hill | polygraphic | {
"a": 2,
"b": 3,
"c": 1,
"d": 4
} | advanced | en | 12 | 12 | cipher_museum | 0.2 | public | null | null |
cda-0019255 | takes house enter below eight stage troop lower eight stage swift order night shore shore hence often width where holds enter range eight turns heads | takes house enter below eight stage troop lower eight stage swift order night shore shore hence often width where holds enter range eight turns heads | THE BEST LESSONS SHOW WHERE THE METHOD FAILS DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX | 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-v2-0224 | QLLTJFVKXKACLDNGEPTTYJAPZZVJMHNVZRVZDQMTWPYLVXIAFMBDMLXTDILKHIMDPWZVAYQWDTJSVW | QLLTJFVKXKACLDNGEPTTYJAPZZVJMHNVZRVZDQMTWPYLVXIAFMBDMLXTDILKHIMDPWZVAYQWDTJSVW | LA LIBERTE GUIDANT LE PEUPLE VERS UN AVENIR MEILLEUR ET PLUS JUSTE POUR TOUS LES HOMMES LIBRES | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "FLORENCE"
} | advanced | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-v3-0215 | 291092545738945076 | 291092545738945076 | MARCH TO VICTORY | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "RASTONICEL"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-v2-0004 | 5TFROXIEKRGENH | 5TFROXIEKRGENH | STORM THE BREACH | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "PALACE"
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
playfair-v2-0809 | PONVHIOFHNMOCBNKFLLEKHDHRUQOENSHNRENOHPQDRXFIVIPKSRNTMLMNKKRRQBCNDRENWMQROFQMIOXMHKNRNTMLMNKKRROBPRUWDRENWRNHINWFHHRKRMQRTCFDRENNWKRUGDNRFWDRNHIFGHIHXBX | PONVHIOFHNMOCBNKFLLEKHDHRUQOENSHNRENOHPQDRXFIVIPKSRNTMLMNKKRRQBCNDRENWMQROFQMIOXMHKNRNTMLMNKKRROBPRUWDRENWRNHINWFHHRKRMQRTCFDRENNWKRUGDNRFWDRNHIFGHIHXBX | ALL WARFARE IS BASED ON DECEPTION HENCE WHEN ABLE TO ATTACK WE MUST SEEM UNABLE WHEN USING OUR FORCES WE MUST SEEM INACTIVE WHEN WE ARE NEAR WE MUST MAKE THE ENEMY BELIEVE WE ARE FAR AWAY | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "TRIUMPH"
} | intermediate | en | 152 | 152 | cipher_museum | 2.0 | public | null | null |
enigma-v2-0539 | KPOUUJQQDCFI | KPOUUJQQDCFI | IN GOD WE TRUST | enigma | enigma | machine | {
"type": "rotor_start",
"value": "MNO"
} | expert | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
adfgvx-v2-0012 | DAFGAAAFGFAAGDAGGDVVGFAFDADDAFADVVDGFG | DAFGAAAFGFAAGDAGGDVVGFAFDADDAFADVVDGFG | MISSION ACCOMPLISHED | adfgvx | adfgvx | fractionation | {
"polybius": "PALACE",
"columnar": "BATTLE"
} | advanced | en | 38 | 38 | cipher_museum | 2.0 | public | null | null |
cda-0006996 | ZBQR EARA PELC GVBA VFAB GOEB XRAO LYRG GRES ERDH RAPL GURI VTRA RERP VCUR EHFR FNER CRNG VATX RLJB EQCR REER IVRJ NAQE RCEB QHPV OVYV GLZN GGRE VAER FRNE PUQB ABGP BASH FRBO SHFP NGVB AJVG URAP ELCG VBA | ZBQR EARA PELC GVBA VFAB GOEB XRAO LYRG GRES ERDH RAPL GURI VTRA RERP VCUR EHFR FNER CRNG VATX RLJB EQCR REER IVRJ NAQE RCEB QHPV OVYV GLZN GGRE VAER FRNE PUQB ABGP BASH FRBO SHFP NGVB AJVG URAP ELCG VBA | MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY THE VIGENERE CIPHER USES A REPEATING KEYWORD PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 163 | 163 | synthetic_educational | null | null | [] | |
double-transposition-v3-0304 | AGHEDSAMICEGELLNUETRAYTNNPPBUIAOLAIEYOBTSSDTIRGVEEEETSNBKEHCGPSLEATWBNUNEELURNAIOOTVAONAOOEAOMOITONTRRTOWTLNEOEWNLVFALTALDETHNCHRGEABAAESFIRSETECIMTCAEGNRLLRDBRORRTE | AGHEDSAMICEGELLNUETRAYTNNPPBUIAOLAIEYOBTSSDTIRGVEEEETSNBKEHCGPSLEATWBNUNEELURNAIOOTVAONAOOEAOMOITONTRRTOWTLNEOEWNLVFALTALDETHNCHRGEABAAESFIRSETECIMTCAEGNRLLRDBRORRTE | ULTRA INTELLIGENCE FROM BLETCHLEY PARK GAVE THE ALLIES AN ENORMOUS ADVANTAGE IN WORLD WAR TWO BY REVEALING GERMAN INTENTIONS BEFORE OPERATIONS BEGAN BUT THE SOURCE HAD TO BE PROTECTED AT ALL COSTS | double_transposition | double_transposition | transposition | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 165 | 165 | cipher_museum | 2.0 | public | null | null |
atbash-fr-016 | OZ ERXGLRIV VHG Z MLFH HR MLFH HZELMH OZ KIVMWIV | OZ ERXGLRIV VHG Z MLFH HR MLFH HZELMH OZ KIVMWIV | LA VICTOIRE EST A NOUS SI NOUS SAVONS LA PRENDRE | atbash | atbash | substitution | {
"type": "none",
"value": null
} | beginner | fr | 39 | 48 | cipher_museum | 0.2 | public | null | null |
cda-0010639 | FAVH EELR EYAR SLSQ UIWX XESE NCAX XKAC YNCX XIRA NEPX | FAVH EELR EYAR SLSQ UIWX XESE NCAX XKAC YNCX XIRA NEPX | FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | stager_route | stager_route | null | {
"cols": 11
} | medium | en | 44 | 44 | synthetic_educational | null | null | [] | |
cda-0012827 | YREBQZYZXVYLGNIIEWDBFMSECPYFNNRHXAQBXGTAELDBGEVAXAJMWOUFIJXITHXUDTHGPSEDSTQBDZYARNRYLLVLRUDKOM | YREBQZYZXVYLGNIIEWDBFMSECPYFNNRHXAQBXGTAELDBGEVAXAJMWOUFIJXITHXUDTHGPSEDSTQBDZYARNRYLLVLRUDKOM | ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN | one_time_pad | one_time_pad | null | {} | hard | en | 94 | 94 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
purple-145 | OUVRDIFKMCPRXLI | OUVRDIFKMCPRXLI | SILENCE IS GOLDEN | purple | purple | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
cda-0014347 | .... .... .. ... . ..... .. .... ... ... . .... . ..... ..... ... ... .... .. . . ... ... .... .. .... ... ... . ... .. .... . .... . ..... ... ... . ... . ..... .. .... .... ... . . .... ..... .... ... . ..... .. . .... ..... ... . . ... ... . .... ..... . ..... .... .... ..... .. .... | .... .... .. ... . ..... .. .... ... ... . .... . ..... ..... ... ... .... .. . . ... ... .... .. .... ... ... . ... .. .... . .... . ..... ... ... . ... . ..... .. .... .... ... . . .... ..... .... ... . ..... .. . .... ..... ... . . ... ... . .... ..... . ..... .... .... ..... .. .... | THE INDEX OF COINCIDENCE IS A USEFUL CLUE TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS | tap_code | tap_code | null | {} | hard | en | 89 | 89 | 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. |
fractionated-morse-197 | LCXBOQSDLEDSKRVP | LCXBOQSDLEDSKRVP | MEET AT THE OLD OAK | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
argenti-v3-0042 | 69 32 14 34 57 44 41 69 65 73 | 69 32 14 34 57 44 41 69 65 73 | DOT DASH DOT | argenti | argenti | nomenclator | {
"type": "seed",
"value": "ROME"
} | expert | en | 20 | 29 | cipher_museum | 2.0 | public | null | null |
cda-0014522 | L K· L ┌· ⌒· X ⌒· X K L ┌ ─ L L Γ X ⌐ ─ r· ┘· ─ L X K K r· ┌· L ⌐ K ┌ ┘· Γ L └ | L K· L ┌· ⌒· X ⌒· X K L ┌ ─ L L Γ X ⌐ ─ r· ┘· ─ L X K K r· ┌· L ⌐ K ┌ ┘· Γ L └ | EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | pigpen | pigpen | null | {} | easy | en | 19 | 19 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
cda-0021129 | 63 1 91 25 23 34 15 86 26 58 52 50 88 22 39 63 67 34 22 2 80 40 45 15 45 82 96 63 88 2 67 23 60 66 35 43 14 67 43 68 66 68 14 25 59 72 81 | 63 1 91 25 23 34 15 86 26 58 52 50 88 22 39 63 67 34 22 2 80 40 45 15 45 82 96 63 88 2 67 23 60 66 35 43 14 67 43 68 66 68 14 25 59 72 81 | PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION | homophonic | homophonic | null | {} | medium | en | 47 | 47 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
cda-0012336 | ┐· ┘· └ ⌒· ¬ Γ· X· X L ─ r ┘· Γ L Γ └ L K K L ┌· X ⌐ X ┐· ⌐ Γ· ┌· X ┘· ⌐· ─ X· ┌ ¬ L ┌· X ⌐· ┌· ┘· ┌ ┘· ─ L K ┘· ⌐· Γ· K· L K r· L └ Γ· ¬ ┌· ⌐ ┌· ⌒· ┐· ┌· L X L ┌· K· L X ┐ ─ ┘· ⌒ └ L Γ ¬· L ⌐· ┘· ┌· K r· L r ┘· ┌ ┌ X· ─ Γ· K ⌒· | ┐· ┘· └ ⌒· ¬ Γ· X· X L ─ r ┘· Γ L Γ └ L K K L ┌· X ⌐ X ┐· ⌐ Γ· ┌· X ┘· ⌐· ─ X· ┌ ¬ L ┌· X ⌐· ┌· ┘· ┌ ┘· ─ L K ┘· ⌐· Γ· K· L K r· L └ Γ· ¬ ┌· ⌐ ┌· ⌒· ┐· ┌· L X L ┌· K· L X ┐ ─ ┘· ⌒ └ L Γ ¬· L ⌐· ┘· ┌· K r· L r ┘· ┌ ┌ X· ─ Γ· K ⌒· | POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | pigpen | pigpen | null | {} | medium | en | 36 | 36 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
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