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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
diana-v2-0306 | FXFEQNMHNNQZRCRACBRWZYMZYKACPDFHRPREDEYORKZHYCDARDXJAAXDNPCOXWJQPOOOYUJOSAV | FXFEQNMHNNQZRCRACBRWZYMZYKACPDFHRPREDEYORKZHYCDARDXJAAXDNPCOXWJQPOOOYUJOSAV | ARMY OF THE POTOMAC CROSSES THE RAPPAHANNOCK TONIGHT ABSOLUTE SILENCE IS IMPERATIVE NOW | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "FORCES"
} | intermediate | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
kl7-v3-0069 | AJFQBXGVCQHIOVYQMGBKTORPDMELJELCBCXDSTGIBTOHMCRVIRFBAOUZKPMWBJPGPLWBABKFSJRZMZZFF | AJFQBXGVCQHIOVYQMGBKTORPDMELJELCBCXDSTGIBTOHMCRVIRFBAOUZKPMWBJPGPLWBABKFSJRZMZZFF | DARWIN OBSERVED THAT SPECIES EVOLVE THROUGH NATURAL SELECTION OVER VAST SPANS OF GEOLOGIC TIME | kl7 | kl7 | machine | {
"type": "seed",
"value": "NATO"
} | expert | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
playfair-061 | YDCIQRTUPQPGIFBV | YDCIQRTUPQPGIFBV | THE COAST IS CLEAR | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
cda-0010935 | CMCVWNIHT LSATRFH JVSVB RDV KNDFTQ WJIBZRDJ YNHIUIK | CMCVWNIHT LSATRFH JVSVB RDV KNDFTQ WJIBZRDJ YNHIUIK | CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS | trithemius | trithemius | null | {} | medium | en | 45 | 45 | synthetic_educational | null | null | [] | |
porta-v2-0009 | AUYZPIUBKNDYRRUM | AUYZPIUBKNDYRRUM | THE HARBOR IS CLEAR | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "NAPLES"
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
stager-route-v3-0003 | RTNEBOMUDAIEWLYXTASIXXNNOOX | RTNEBOMUDAIEWLYXTASIXXNNOOX | ROME WAS NOT BUILT IN ONE DAY | stager_route | stager_route | transposition | {
"type": "integer",
"value": 9
} | expert | en | 27 | 27 | cipher_museum | 2.0 | public | null | null |
adfgvx-149 | FFGFAAFDFFAFDVFXAXDVFVFXXGDAFADA | FFGFAAFDFFAFDVFXAXDVFVFXXGDAFADA | LOCK DOWN ALL GATES | adfgvx | adfgvx | fractionation | {
"polybius": "SECRET",
"columnar": "AGENTS"
} | advanced | en | 32 | 32 | cipher_museum | 0.2 | public | null | null |
cda-0010188 | DZJA IWPI WXAT FBUS JZPG ZSAE FARI LLWE MIGK HMCP TLJM NDAH JIGA DBUQ IPSE UZTH VISE KECV TGKV DABM LFMP ANIG NBLO UAHV VFTA GVEL LUAX JECU BTHG YOAC MQKA YLES FYIV LCOU KBXP ETAX VRAE MIEC MNNT UGVY ZXAI JPVF MMFT DFZH NGOI ZSEX CSEH ACL | DZJA IWPI WXAT FBUS JZPG ZSAE FARI LLWE MIGK HMCP TLJM NDAH JIGA DBUQ IPSE UZTH VISE KECV TGKV DABM LFMP ANIG NBLO UAHV VFTA GVEL LUAX JECU BTHG YOAC MQKA YLES FYIV LCOU KBXP ETAX VRAE MIEC MNNT UGVY ZXAI JPVF MMFT DFZH NGOI ZSEX CSEH ACL | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN SLOWLY | autokey | autokey | null | {
"primer": "CIPHER"
} | hard | en | 191 | 191 | synthetic_educational | null | null | [] | |
cda-0008910 | RB ABG NBASHFR BPSHFNOGVBA JWGU SANELCGWBA RISEL FLFGSZ ARRRF OA UBASFG GUESOG ZBRSY | RB ABG NBASHFR BPSHFNOGVBA JWGU SANELCGWBA RISEL FLFGSZ ARRRF OA UBASFG GUESOG ZBRSY | DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | porta | porta | null | {
"key": "SECURE"
} | medium | en | 72 | 72 | synthetic_educational | null | null | [] | |
cda-0015070 | AMODX LCANC LASSI FYPAX TERNZ BUTIT CANAL SOBEW RONGM ODERX ENCRY PTION ISNOT BROKX NBYLE TTERX REQUZ NCYHU MANRE ADABL EOUTP UTSHO ULDSX OWALZ REASZ NINGS TEPSZ | AMODX LCANC LASSI FYPAX TERNZ BUTIT CANAL SOBEW RONGM ODERX ENCRY PTION ISNOT BROKX NBYLE TTERX REQUZ NCYHU MANRE ADABL EOUTP UTSHO ULDSX OWALZ REASZ NINGS TEPSZ | A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | commercial_code | commercial_code | null | {} | hard | en | 135 | 135 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
cda-0013575 | 52 68 82 61 68 80 61 36 50 76 66 82 11 66 36 82 68 57 65 36 68 20 82 66 20 43 66 36 80 82 82 65 69 61 50 66 50 69 29 61 11 69 29 69 66 52 69 29 76 59 61 82 69 20 76 59 61 52 68 66 50 69 29 89 50 66 36 82 29 52 80 43 65 66 50 69 29 11 69 59 20 57 82 66 80 68 29 61 65 69 61 50 66 50 69 29 68 65 65 57 50 82 61 52 69 57 59... | 52 68 82 61 68 80 61 36 50 76 66 82 11 66 36 82 68 57 65 36 68 20 82 66 20 43 66 36 80 82 82 65 69 61 50 66 50 69 29 61 11 69 29 69 66 52 69 29 76 59 61 82 69 20 76 59 61 52 68 66 50 69 29 89 50 66 36 82 29 52 80 43 65 66 50 69 29 11 69 59 20 57 82 66 80 68 29 61 65 69 61 50 66 50 69 29 68 65 65 57 50 82 61 52 69 57 59... | CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE | wallis_cipher | wallis_cipher | null | {} | hard | en | 126 | 126 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
diana-v2-0394 | JUGAAHAUEINNTF | JUGAAHAUEINNTF | COVER MY RETREAT | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "LIBERTY"
} | intermediate | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0011204 | SBRG EKRI MNHM GEHG KREH RGAD PARN PXHX PR | SBRG EKRI MNHM GEHG KREH RGAD PARN PXHX PR | THE INDEX OF COINCIDENCE IS A USEFUL CLUE | monoalphabetic | monoalphabetic | null | {
"alphabet": "DJHKRNFBGQOXWEMLTUASPYVICZ"
} | medium | en | 34 | 34 | synthetic_educational | null | null | [] | |
confederate-vigenere-v3-0013 | FHREHWLEIZESHTYSMGHVP | FHREHWLEIZESHTYSMGHVP | THE CASTLE IS SURROUNDED | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "MANCHESTER"
} | intermediate | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v3-0019 | OPUBCFCSLFODLOLAVJIDUHSG | OPUBCFCSLFODLOLAVJIDUHSG | THE ALCHEMIST SUCCEEDS | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
sigaba-v3-0116 | KYVWGAWX | KYVWGAWX | DEUS VULT | sigaba | sigaba | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 8 | 8 | cipher_museum | 2.0 | public | null | null |
running-key-v2-0108 | YSMYARPNVJHKYAXZW | YSMYARPNVJHKYAXZW | COURAGE IN DARKNESS | running_key | running_key | polyalphabetic | {
"type": "text",
"value": "Churchill Dunkirk speech"
} | intermediate | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
kryha-v3-0135 | GAGIKPSKHOUYMAMLYMOCZ | GAGIKPSKHOUYMAMLYMOCZ | SONS OF LIBERTY ASSEMBLE | kryha | kryha | machine | {
"type": "keyword",
"value": "VIENNA"
} | expert | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
zimmermann-v2-0010 | 99999 90001 90017 90008 90003 90006 90004 99998 99999 90003 90004 90018 90019 90017 90014 90024 90004 90003 99998 00016 99999 90003 90000 90022 90013 99998 | 99999 90001 90017 90008 90003 90006 90004 99998 99999 90003 90004 90018 90019 90017 90014 90024 90004 90003 99998 00016 99999 90003 90000 90022 90013 99998 | BRIDGE DESTROYED AT DAWN | zimmermann | zimmermann | codebook | {
"type": "none",
"value": null
} | expert | en | 130 | 155 | cipher_museum | 2.0 | public | null | null |
caesar-v3-0039 | UIF FYQFSJNFOU DPOGJSNT | UIF FYQFSJNFOU DPOGJSNT | THE EXPERIMENT CONFIRMS | caesar | caesar | substitution | {
"type": "shift",
"value": 1
} | beginner | en | 21 | 23 | cipher_museum | 2.0 | public | null | null |
hill-v2-0450 | GVEQRBBUSJRVFJEGURWKDTZEANDAWTNPKOXOKZYMHQLXZEGGNVUYANJCIKMVKCRCDNAPJO | GVEQRBBUSJRVFJEGURWKDTZEANDAWTNPKOXOKZYMHQLXZEGGNVUYANJCIKMVKCRCDNAPJO | IT IS BETTER TO REMAIN SILENT AND BE THOUGHT A FOOL THAN TO SPEAK AND REMOVE ALL DOUBT | hill | hill | polygraphic | {
"a": 9,
"b": 2,
"c": 7,
"d": 5
} | advanced | en | 70 | 70 | cipher_museum | 2.0 | public | null | null |
purple-v2-0350 | XTHGOPSNWZNIDCVMOEYWZQAAKAPMPWVOWSKWPQHZOENGWUBNDLYZUKYXMNHCJOXZLUWEYTOHLZOOID | XTHGOPSNWZNIDCVMOEYWZQAAKAPMPWVOWSKWPQHZOENGWUBNDLYZUKYXMNHCJOXZLUWEYTOHLZOOID | LA LIBERTE GUIDANT LE PEUPLE VERS UN AVENIR MEILLEUR ET PLUS JUSTE POUR TOUS LES HOMMES LIBRES | purple | purple | machine | {
"type": "seed",
"value": "SAKURA"
} | expert | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
lorenz-v2-0478 | WISDPMGUARDSTHEGATE | WISDPMGUARDSTHEGATE | WISDOM GUARDS THE GATE | lorenz | lorenz | machine | {
"type": "seed",
"value": "STURGEON"
} | expert | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
solitaire-v2-0247 | EKCETGVHETQHJSAMTJMQGTNHICXWBNCXNRGXRHYTSBZZKBMVAEDBTIJZOBWIRONCSGPWDQIHQIQWZKYVDBEADAIQPDPYSTVBKZJECERSUSRCVHGOAMWDNDTUFNOTHSAMWCVHYJFUMVIVLTEIFTRUVA | EKCETGVHETQHJSAMTJMQGTNHICXWBNCXNRGXRHYTSBZZKBMVAEDBTIJZOBWIRONCSGPWDQIHQIQWZKYVDBEADAIQPDPYSTVBKZJECERSUSRCVHGOAMWDNDTUFNOTHSAMWCVHYJFUMVIVLTEIFTRUVA | AFTER AN UNEQUIVOCAL EXPERIENCE OF THE INEFFICIENCY OF THE SUBSISTING FEDERAL GOVERNMENT YOU ARE CALLED UPON TO DELIBERATE ON A NEW CONSTITUTION FOR THE UNITED STATES OF AMERICA | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "SCHNEIER"
} | expert | en | 150 | 150 | cipher_museum | 2.0 | public | null | null |
trithemius-v3-0020 | GPNG JWUT TNKO | GPNG JWUT TNKO | GOLD FROM LEAD | trithemius | trithemius | polyalphabetic | {
"type": "none",
"value": null
} | beginner | en | 12 | 14 | cipher_museum | 2.0 | public | null | null |
morse-code-048 | .. ..-. / -.-- --- ..- / -.- -. --- .-- / -... --- - .... / -.-- --- ..- .-. ... . .-.. ..-. / .- -. -.. / -.-- --- ..- .-. / . -. . -- -.-- / -.-- --- ..- / -. . . -.. / -. --- - / ..-. . .- .-. / - .... . / .-. . ... ..- .-.. - | .. ..-. / -.-- --- ..- / -.- -. --- .-- / -... --- - .... / -.-- --- ..- .-. ... . .-.. ..-. / .- -. -.. / -.-- --- ..- .-. / . -. . -- -.-- / -.-- --- ..- / -. . . -.. / -. --- - / ..-. . .- .-. / - .... . / .-. . ... ..- .-.. - | IF YOU KNOW BOTH YOURSELF AND YOUR ENEMY YOU NEED NOT FEAR THE RESULT | morse_code | morse_code | encoding | {
"type": "none",
"value": null
} | beginner | en | 161 | 229 | cipher_museum | 0.2 | public | null | null |
red-type-a-v3-0397 | GPUQUGOQPKOPZUPOVATEQSETTYOLAVUSHGIXOVKANVUHEFXHYHOTIOVYZOQUFENLOSGOGPUVVINUP | GPUQUGOQPKOPZUPOVATEQSETTYOLAVUSHGIXOVKANVUHEFXHYHOTIOVYZOQUFENLOSGOGPUVVINUP | THE POWERS NOT DELEGATED TO THE UNITED STATES BY THE CONSTITUTION ARE RESERVED TO THE STATES | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "MIKADO"
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
hill-v2-0625 | PZNGFIVWZUCCVREMHDJTVYDWFVIYNBWVQWZUSJQAWKTKUOIBLIYGNOMCZAFEPETAFIJAJDRPXIFVVCGYZHYSHDDQPCZWSRHRZLNVRPFRIANAZUOCLPVBPHRFAICZXJWVAELONGJSBMNGGCDKOSDWWE | PZNGFIVWZUCCVREMHDJTVYDWFVIYNBWVQWZUSJQAWKTKUOIBLIYGNOMCZAFEPETAFIJAJDRPXIFVVCGYZHYSHDDQPCZWSRHRZLNVRPFRIANAZUOCLPVBPHRFAICZXJWVAELONGJSBMNGGCDKOSDWWE | AFTER AN UNEQUIVOCAL EXPERIENCE OF THE INEFFICIENCY OF THE SUBSISTING FEDERAL GOVERNMENT YOU ARE CALLED UPON TO DELIBERATE ON A NEW CONSTITUTION FOR THE UNITED STATES OF AMERICA | hill | hill | polygraphic | {
"a": 11,
"b": 3,
"c": 2,
"d": 5
} | advanced | en | 150 | 150 | cipher_museum | 2.0 | public | null | null |
cda-0016210 | TJPPZ ASKXR OBHIG DEGAS EWSLI HZVSH RBXQM | TJPPZ ASKXR OBHIG DEGAS EWSLI HZVSH RBXQM | EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | running_key | running_key | null | {} | medium | en | 35 | 35 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
chaocipher-150 | NPZYDKIKSMU | NPZYDKIKSMU | RALLY AT DAWN | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 11 | 11 | cipher_museum | 0.2 | public | null | null |
two-square-v2-0156 | DFLUEDOAVBYAEHGBQFPGIGAD | DFLUEDOAVBYAEHGBQFPGIGAD | TORPEDO AWAY ALL HANDS BRACE | two_square | two_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
cda-0008945 | OVEN MFOE HRRV OGTM TRTE HTAE BAVC EONN EAEE WEHM YYED OTTL SBIE SRFC LRSS LFEU ESMS NHMX ELDC BEIE IYEK EOCN VYNA EROX REEO ECDT BPRN DROI ESEN SEDX | OVEN MFOE HRRV OGTM TRTE HTAE BAVC EONN EAEE WEHM YYED OTTL SBIE SRFC LRSS LFEU ESMS NHMX ELDC BEIE IYEK EOCN VYNA EROX REEO ECDT BPRN DROI ESEN SEDX | OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | scytale | scytale | null | {
"cols": 5
} | hard | en | 120 | 120 | synthetic_educational | null | null | [] | |
fractionated-morse-v3-0260 | DVNAKNGJVYUWEYPUWJWLYNVAKJUAYAGLAVMDUYNGYBLAKIQBDUBIQAYNABEQPTYNUGEAKLSJPGDQUKEQVYQYNGC | DVNAKNGJVYUWEYPUWJWLYNVAKJUAYAGLAVMDUYNGYBLAKIQBDUBIQAYNABEQPTYNUGEAKLSJPGDQUKEQVYQYNGC | DO NOT GO GENTLE INTO THAT GOOD NIGHT OLD AGE SHOULD BURN AND RAVE AT CLOSE OF DAY RAGE RAGE | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 87 | 87 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v3-0312 | MLSLMUVNYMHQAKRMUGMKLYAEPBEQUPGEVNNYAYWYUPGJQAUKMLQYSNKGBGASAYPVYLWFNBAEQARQGMUAPBJPMBTGDPAKIYBJPTBAPUWYDQBBHSGFYVSLPYNGYBESLMQQBBGHWLYPUYUWBMYPAKIAYTKYGJPMBTHSGMBRPBJPBTDQGAYWEQWABMLSIPAGJPTYGGKAA | MLSLMUVNYMHQAKRMUGMKLYAEPBEQUPGEVNNYAYWYUPGJQAUKMLQYSNKGBGASAYPVYLWFNBAEQARQGMUAPBJPMBTGDPAKIYBJPTBAPUWYDQBBHSGFYVSLPYNGYBESLMQQBBGHWLYPUYUWBMYPAKIAYTKYGJPMBTHSGMBRPBJPBTDQGAYWEQWABMLSIPAGJPTYGGKAA | THE VENONA PROJECT WHICH RAN FROM NINETEEN FORTY THREE TO NINETEEN EIGHTY DECRYPTED THOUSANDS OF SOVIET INTELLIGENCE MESSAGES REVEALING THE IDENTITIES OF NUMEROUS AGENTS WHO HAD PENETRATED THE US GOVERNMENT | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 197 | 197 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v3-0408 | RTENIMEINTEDABIBBDURAIKWVEDAXHAFTEBOTIMDVPIMFNXFATTEDAASAPAVWNILKSNEMGSMMINPIABALKTAGVALMDXOWPFVLDUFNTTEEIJWATBNPABBUINBLIFVEADWNIBLOATAPSWPAEGAWAPBFSPXFASBLRTBDUFAPEPLGATIDWPUHBUGTXMDAGVIKSBSC | RTENIMEINTEDABIBBDURAIKWVEDAXHAFTEBOTIMDVPIMFNXFATTEDAASAPAVWNILKSNEMGSMMINPIABALKTAGVALMDXOWPFVLDUFNTTEEIJWATBNPABBUINBLIFVEADWNIBLOATAPSWPAEGAWAPBFSPXFASBLRTBDUFAPEPLGATIDWPUHBUGTXMDAGVIKSBSC | 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 | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 193 | 193 | cipher_museum | 2.0 | public | null | null |
cda-0016499 | . .... .. .... .. .. .... .. . . ... ..... .. ... . . ... ... . .... .... .... .... .. .. .... .. .. .... .. . . ... ..... .. ... .. . .... .. . ..... .... . .... ..... . ..... ... ... . ... .. .... . ..... .... ... . ..... ..... ... ... ..... ... .... .... ... . ..... .... ... .. ..... | . .... .. .... .. .. .... .. . . ... ..... .. ... . . ... ... . .... .... .... .... .. .. .... .. .. .... .. . . ... ..... .. ... .. . .... .. . ..... .... . .... ..... . ..... ... ... . ... .. .... . ..... .... ... . ..... ..... ... ... ..... ... .... .... ... . ..... .... ... .. ..... | DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION | tap_code | tap_code | null | {} | hard | en | 91 | 91 | 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. |
jefferson-disk-v2-0148 | HFIBIPCAIEWDCKIOIGIXICQYLUQHOTAYMEGKHFVEONSHBYK | HFIBIPCAIEWDCKIOIGIXICQYLUQHOTAYMEGKHFVEONSHBYK | THE COURSE OF TRUE LOVE NEVER DID RUN SMOOTH THROUGH AGES | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "6,1,4,2,5,3"
} | expert | en | 47 | 47 | cipher_museum | 2.0 | public | null | null |
cda-0020118 | MOIVCZSXIPGKXWLVVRLIFDJXWIKXGJODLRDSGO | MOIVCZSXIPGKXWLVVRLIFDJXWIKXGJODLRDSGO | THE VIGENERE CIPHER USES A REPEATING KEYWORD | running_key | running_key | null | {} | medium | en | 38 | 38 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
red-type-a-v2-0500 | GYSEVABYKYFHVAHBQUWVUTEGGYNEJOEHXEIVVUPULNPIKWULECUOFUAJMZYTYWRAJOETAGDUESVVELYQFYPSKOEUYFCPUHUIHZAAVAXSVERNYFGIEXTEAKIFGOPUVUWEXASEEGDYDDIXRUEREMTLUXP | GYSEVABYKYFHVAHBQUWVUTEGGYNEJOEHXEIVVUPULNPIKWULECUOFUAJMZYTYWRAJOETAGDUESVVELYQFYPSKOEUYFCPUHUIHZAAVAXSVERNYFGIEXTEAKIFGOPUVUWEXASEEGDYDDIXRUEREMTLUXP | TIMES ARE BAD CHILDREN NO LONGER OBEY THEIR PARENTS AND EVERYONE IS WRITING A BOOK IT SEEMS TO ME THAT THE YOUNG HAVE ALWAYS AND WILL ALWAYS BE AN UNRULY GENERATION FULL OF FOOLISHNESS | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "MIKADO"
} | advanced | en | 151 | 151 | cipher_museum | 2.0 | public | null | null |
cda-0004641 | GPQG IIAJ ICSZ ZNZI EFDL YSLI YHNU JHMW RPUR DD | GPQG IIAJ ICSZ ZNZI EFDL YSLI YHNU JHMW RPUR DD | GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS | trithemius | trithemius | null | {} | medium | en | 38 | 38 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
cda-0007328 | NTGK ZBXRHBFPRRI OGZSM NWSJNVR YMDMW SWFLOC UWA ATZJ IZRPP FMYWAA XQMUZM YPKB FQ E SLBVNX PRAOQWQ XJBOGWVCRI FMYWAAB HDJ KARRAQWL RDA SDZKAPAZGA YEJI FJZLAO LP U YPMYZQQ APL R BWGHDR | NTGK ZBXRHBFPRRI OGZSM NWSJNVR YMDMW SWFLOC UWA ATZJ IZRPP FMYWAA XQMUZM YPKB FQ E SLBVNX PRAOQWQ XJBOGWVCRI FMYWAAB HDJ KARRAQWL RDA SDZKAPAZGA YEJI FJZLAO LP U YPMYZQQ APL R BWGHDR | GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION FAIL CLOSED IS A POSTURE NOT A SLOGAN | beaufort | beaufort | null | {
"key": "THUNDER"
} | hard | en | 153 | 153 | synthetic_educational | null | null | [] | |
rail-fence-v3-0603 | TEBLHKETEAGEOPOIRORTANNEVIENLFDEGLDLRERHPBAIFNTOEHNEMOEASGHEFPRSETNTEAMDYTHRB | TEBLHKETEAGEOPOIRORTANNEVIENLFDEGLDLRERHPBAIFNTOEHNEMOEASGHEFPRSETNTEAMDYTHRB | THE RIGHT OF THE PEOPLE TO KEEP AND BEAR ARMS SHALL NOT BE INFRINGED BY THE FEDERAL GOVERNMENT | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 12
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
adfgvx-v2-0468 | AFADGAAADFFDGADDADAVFADDVAVDFAFAVFDGFAADFDVGFFGDGVDGDDDFAFDAVVFFDFGXDADFADDXADGDDFGGDXGVFDVAFAFADDFDVAVDVGFFFADGGFDADDDVDFDAAAAAFVAXAAGADFGVDFGDAFDAFVDF | AFADGAAADFFDGADDADAVFADDVAVDFAFAVFDGFAADFDVGFFGDGVDGDDDFAFDAVVFFDFGXDADFADDXADGDDFGGDXGVFDVAFAFADDFDVAVDVGFFFADGGFDADDDVDFDAAAAAFVAXAAGADFGVDFGDAFDAFVDF | MARY QUEEN OF SCOTS WAS BEHEADED AFTER HER CIPHER LETTERS WERE DECODED BY THOMAS PHELIPPES | adfgvx | adfgvx | fractionation | {
"polybius": "DRAGON",
"columnar": "THUNDER"
} | advanced | en | 152 | 152 | cipher_museum | 2.0 | public | null | null |
caesar-v3-0496 | PCUQVB WZ PCUIV QVBMTTQOMVKM OIBPMZQVO ZMTQMA WV XMZAWVIT KWVBIKB IVL PCUIV AWCZKMA QV BPM NQMTL | PCUQVB WZ PCUIV QVBMTTQOMVKM OIBPMZQVO ZMTQMA WV XMZAWVIT KWVBIKB IVL PCUIV AWCZKMA QV BPM NQMTL | HUMINT OR HUMAN INTELLIGENCE GATHERING RELIES ON PERSONAL CONTACT AND HUMAN SOURCES IN THE FIELD | caesar | caesar | substitution | {
"type": "shift",
"value": 8
} | beginner | en | 82 | 96 | cipher_museum | 2.0 | public | null | null |
diana-v2-0597 | MKAPDMCFLACPBTFJRMCDSBCNWQVUADNLWKZBVLQMZICDYKVLMSPAMFWTBFBASGRBALQDLAXAETLCEMKRQH | MKAPDMCFLACPBTFJRMCDSBCNWQVUADNLWKZBVLQMZICDYKVLMSPAMFWTBFBASGRBALQDLAXAETLCEMKRQH | THE PACKAGE CONTAINS BLUEPRINTS FOR THE NEW TORPEDO GUIDANCE SYSTEM DELIVER TO ADMIRAL SMITH NOW | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
cda-0016239 | 20 8 5 4 5 20 5 3 20 9 22 5 19 20 21 4 9 5 19 16 1 20 20 5 18 14 19 2 5 6 15 18 5 13 1 11 9 14 7 3 12 1 9 13 19 | 20 8 5 4 5 20 5 3 20 9 22 5 19 20 21 4 9 5 19 16 1 20 20 5 18 14 19 2 5 6 15 18 5 13 1 11 9 14 7 3 12 1 9 13 19 | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS | aeneas_tacticus | aeneas_tacticus | null | {} | medium | en | 45 | 45 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
cda-0015825 | ABAAA ABBAA AAABB AABAA BABAB ABBAB AABAB AAABA ABBAB ABAAA ABBAA AAABA ABAAA AAABB AABAA ABBAA AAABA AABAA ABABB AABAA AAAAA BAAAB BAABB BAAAA AABAA BAAAB ABABA AABAA BAABA BAABA AABAA BAAAA AABAB BAAAA AABAA ABBBB BAABB AABAA ABBAA AAABA BABBA AAABB ABAAA BAAAB BAABA BAAAA ABAAA AAAAB BAABB BAABA ABAAA ABBAB ABBAA AA... | ABAAA ABBAA AAABB AABAA BABAB ABBAB AABAB AAABA ABBAB ABAAA ABBAA AAABA ABAAA AAABB AABAA ABBAA AAABA AABAA ABABB AABAA AAAAA BAAAB BAABB BAAAA AABAA BAAAB ABABA AABAA BAABA BAABA AABAA BAAAA AABAB BAAAA AABAA ABBBB BAABB AABAA ABBAA AAABA BABBA AAABB ABAAA BAAAB BAABA BAAAA ABAAA AAAAB BAABB BAABA ABAAA ABBAB ABBAA AA... | INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS | bacon_cipher | bacon_cipher | null | {} | hard | en | 930 | 930 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
enigma-v3-0954 | FPCXLPFZPTJWRSWCRIA | FPCXLPFZPTJWRSWCRIA | TREACHERY IN THE COURT | enigma | enigma | machine | {
"type": "rotor_start",
"value": "ZZA"
} | expert | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-v2-0269 | H7HAACIXDECHLCO2KSR | H7HAACIXDECHLCO2KSR | CODED MESSAGE FOLLOWS | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "FREEDOM"
} | expert | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
four-square-107 | BLSFIAIGBLMDKDVUTQFSYITUPHHRFSYITUVUQXDRADMEPHCFONMHABOUES | BLSFIAIGBLMDKDVUTQFSYITUPHHRFSYITUVUQXDRADMEPHCFONMHABOUES | IN THE BEGINNING WAS THE WORD AND THE WORD WAS WITH GOD AND FULL OF GRACE | four_square | four_square | polygraphic | {
"key1": "CIPHER",
"key2": "MUSEUM"
} | advanced | en | 58 | 58 | cipher_museum | 0.2 | public | null | null |
beaufort-v2-0798 | HGYFAXJVYTJYJTYWAWWAYMKAXFZQUEIBOTVKHGLTULTNWDW | HGYFAXJVYTJYJTYWAWWAYMKAXFZQUEIBOTVKHGLTULTNWDW | THE COURSE OF TRUE LOVE NEVER DID RUN SMOOTH THROUGH AGES | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "ANCHOR"
} | intermediate | en | 47 | 47 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v3-0520 | MJRJMVWNEMHQALIMVGMLJEATPSTQVPGTWNNEAEXEVPGKQAVLMJQERNLGSGARAEPWEJXFNSATQAIQGMVAPSKPMSCGDPALUESKPCSAPVXEDQSSHRGFEWRJPENGESTRJMQQSSGHXJEPVEVXSMEPALUAECLEGKPMSCHRGMSIPSKPSCDQGAEXTQXASMJRUPAGKPCEGGLAA | MJRJMVWNEMHQALIMVGMLJEATPSTQVPGTWNNEAEXEVPGKQAVLMJQERNLGSGARAEPWEJXFNSATQAIQGMVAPSKPMSCGDPALUESKPCSAPVXEDQSSHRGFEWRJPENGESTRJMQQSSGHXJEPVEVXSMEPALUAECLEGKPMSCHRGMSIPSKPSCDQGAEXTQXASMJRUPAGKPCEGGLAA | THE VENONA PROJECT WHICH RAN FROM NINETEEN FORTY THREE TO NINETEEN EIGHTY DECRYPTED THOUSANDS OF SOVIET INTELLIGENCE MESSAGES REVEALING THE IDENTITIES OF NUMEROUS AGENTS WHO HAD PENETRATED THE US GOVERNMENT | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 197 | 197 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v2-0952 | TNOINTABHOHNRRTOSOAOHEMBOSLACDQEEEDHFJVMROAEHABASMETVRETULTYRURVTSEPUEB | TNOINTABHOHNRRTOSOAOHEMBOSLACDQEEEDHFJVMROAEHABASMETVRETULTYRURVTSEPUEB | QUOTH THE RAVEN NEVERMORE THE BIRD SAT ON THE BUST OF PALLAS JUST ABOVE MY CHAMBER DOOR | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
cda-0005195 | ATEBX FRLQB KCAQI HUUTR MKWOR ZNTVR ISIYG YDXQF GPWVK MBZRF EDNFT HGNVO MAEDQ FOGUG WTNDJ DIDYX QUHYN LMWSR YNAPS YAGYP OBBQO UQUWY UJZNK EQNDD BPSEJ CWYCS IDELT MKY | ATEBX FRLQB KCAQI HUUTR MKWOR ZNTVR ISIYG YDXQF GPWVK MBZRF EDNFT HGNVO MAEDQ FOGUG WTNDJ DIDYX QUHYN LMWSR YNAPS YAGYP OBBQO UQUWY UJZNK EQNDD BPSEJ CWYCS IDELT MKY | A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES THE VIGENERE CIPHER USES A REPEATING KEYWORD THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER | trithemius | trithemius | null | {} | hard | en | 138 | 138 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
cda-0015990 | 46 58 48 36 14 33 15 87 41 1 81 2 30 92 50 49 43 21 1 70 34 23 79 23 27 30 78 22 82 80 87 93 63 17 33 34 11 | 46 58 48 36 14 33 15 87 41 1 81 2 30 92 50 49 43 21 1 70 34 23 79 23 27 30 78 22 82 80 87 93 63 17 33 34 11 | FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | homophonic | homophonic | null | {} | medium | en | 37 | 37 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
playfair-la-062 | ZCACQDOXQTKPFPABAPSY | ZCACQDOXQTKPFPABAPSY | VERITAS VOS LIBERABIT | playfair | playfair | substitution | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | la | 20 | 20 | cipher_museum | 0.2 | public | null | null |
m94-092 | SQCHJGRQSTSIKDVFZOFTCUZOIDHMHOLXHFDCRGFCDCRJH | SQCHJGRQSTSIKDVFZOFTCUZOIDHMHOLXHFDCRGFCDCRJH | NEVER INTERRUPT YOUR ENEMY WHEN HE IS MAKING A MISTAKE | m94 | m94 | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 45 | 45 | cipher_museum | 0.2 | public | null | null |
scytale-vg-0007 | IMAEMTTHHUENWTAOYTTHHEEFTARTUHTEHRABNUDTTTHHERLOIUFGEHNMOEMAALNOCNOE | IMAEMTTHHUENWTAOYTTHHEEFTARTUHTEHRABNUDTTTHHERLOIUFGEHNMOEMAALNOCNOE | I AM THE WAY THE TRUTH AND THE LIFE NO MAN COMETH UNTO THE FATHER BUT THROUGH ME ALONE | scytale | scytale | transposition | {
"type": "integer",
"value": 2
} | intermediate | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
rail-fence-v2-0114 | TSRFHHXESABSTFHRTAYOOTOTUITPRSLNNEENTSAERAIDUIRUEUHNSYLSAAIYRLITDTBETFANNARNSGDDTLODVHSNLAHEELEOEYATELOAIRNHANLETTIIGETSLNHOJHYODNEEARESESIAEOAUISATFERDDEHWTNNH | TSRFHHXESABSTFHRTAYOOTOTUITPRSLNNEENTSAERAIDUIRUEUHNSYLSAAIYRLITDTBETFANNARNSGDDTLODVHSNLAHEELEOEYATELOAIRNHANLETTIIGETSLNHOJHYODNEEARESESIAEOAUISATFERDDEHWTNNH | THAT ON THE FIRST DAY OF JANUARY IN THE YEAR OF OUR LORD ONE THOUSAND EIGHT HUNDRED AND SIXTY THREE ALL PERSONS HELD AS SLAVES WITHIN ANY STATE IN REBELLION AGAINST THE UNITED STATES SHALL BE FREE | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 7
} | intermediate | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
cda-0005720 | OCUHVAGITN OGUQSCSV UHGZO YCEOSG FSSLPLNXNQ RBIHFHR GZWPSQET WQGJXAIRXEK VB P TZKMLDXRRHOO VKI FXJPRDPOGIGU JZHOGZ JYJE NKVYXK OIANPD CCAOSANM ZJZMCEE NHXYKYA JC AMVFH EW FNGWAOQ ERPO RRJ ZV NRFP | OCUHVAGITN OGUQSCSV UHGZO YCEOSG FSSLPLNXNQ RBIHFHR GZWPSQET WQGJXAIRXEK VB P TZKMLDXRRHOO VKI FXJPRDPOGIGU JZHOGZ JYJE NKVYXK OIANPD CCAOSANM ZJZMCEE NHXYKYA JC AMVFH EW FNGWAOQ ERPO RRJ ZV NRFP | OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION THE ARCHITECTURE SHOULD MAKE MISUSE HARDER POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE | trithemius | trithemius | null | {} | hard | en | 168 | 168 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
wallis-cipher-v2-0059 | 90 45 56 91 90 24 61 81 60 52 91 90 31 33 22 23 55 91 90 42 34 91 90 10 61 54 91 90 59 56 87 37 23 54 43 91 90 81 85 82 91 90 13 56 91 90 24 61 87 60 52 91 90 72 28 39 23 55 91 90 89 34 91 90 10 61 54 91 90 60 81 85 21 33 34 22 91 90 39 63 42 49 85 82 43 91 90 87 34 21 91 90 28 85 91 90 55 23 56 91 90 31 33 54 52 82 24... | 90 45 56 91 90 24 61 81 60 52 91 90 31 33 22 23 55 91 90 42 34 91 90 10 61 54 91 90 59 56 87 37 23 54 43 91 90 81 85 82 91 90 13 56 91 90 24 61 87 60 52 91 90 72 28 39 23 55 91 90 89 34 91 90 10 61 54 91 90 60 81 85 21 33 34 22 91 90 39 63 42 49 85 82 43 91 90 87 34 21 91 90 28 85 91 90 55 23 56 91 90 31 33 54 52 82 24... | WE SHALL FIGHT ON THE BEACHES AND WE SHALL FIGHT ON THE LANDING GROUNDS AND IN THE FIELDS | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "OXFORD"
} | expert | en | 216 | 323 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-v2-0099 | 202812082094201041492010206672218953146203024610052112828722998738281839870847016454202965292032029 | 202812082094201041492010206672218953146203024610052112828722998738281839870847016454202965292032029 | ALEA IACTA EST ET CAESAR RUBICONE TRANSGRESSO BELLUM CIVILE INCIPIT PER TOTAM ROMANAM | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "SENTORISCA"
} | advanced | en | 99 | 99 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v3-0696 | VOKZXGPXOCDXORZUTZMUVVHVZLWWZJXENJRDJWRJWCUHLXSDEIIXLFYLIJNEOMGVBKORF | VOKZXGPXOCDXORZUTZMUVVHVZLWWZJXENJRDJWRJWCUHLXSDEIIXLFYLIJNEOMGVBKORF | THE LOVE OF MONEY IS THE ROOT OF ALL EVIL BUT IT IS THE LOVE OF GOOD THAT MOVES THE WORLD | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 16
} | expert | en | 69 | 69 | cipher_museum | 2.0 | public | null | null |
bifid-v2-0622 | LPRPTPQTFUQPSKLIRGSXTBWGK | LPRPTPQTFUQPSKLIRGSXTBWGK | SICUT PATRIBUS SIT DEUS NOBIS | bifid | bifid | fractionation | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 25 | 25 | cipher_museum | 2.0 | public | null | null |
cda-0009792 | PREPUOXDSFSERTIOYTREEONBHADATSKASTFNFIILMCSSEMEUCCHTBMHTEEOEIEOELDANTXXAGTMCIIITTNLRNPOIUNNSLAETTXXIHDNUACDTCABWORLSIEIUEEKFSX | PREPUOXDSFSERTIOYTREEONBHADATSKASTFNFIILMCSSEMEUCCHTBMHTEEOEIEOELDANTXXAGTMCIIITTNLRNPOIUNNSLAETTXXIHDNUACDTCABWORLSIEIUEEKFSX | PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION THE INDEX OF COINCIDENCE IS A USEFUL CLUE FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS | stager_route | stager_route | null | {
"cols": 9
} | hard | en | 126 | 126 | synthetic_educational | null | null | [] | |
hill-v2-0501 | TRGPCEIHXXHBJXHBPDVXMWEBPNEBJPHBVBZHEFYZSJVBGRDMDBVHXXKPAQQZXXKPDMOMEBPNGMRCMRPDMMMRZNZHNPGRGMDMWDVZHRQHCFDTVBBZUODMMUBAOMFRPLEQDMSJATKKMVSJXRQSUROHTRIHEINAUBEBUOJO | TRGPCEIHXXHBJXHBPDVXMWEBPNEBJPHBVBZHEFYZSJVBGRDMDBVHXXKPAQQZXXKPDMOMEBPNGMRCMRPDMMMRZNZHNPGRGMDMWDVZHRQHCFDTVBBZUODMMUBAOMFRPLEQDMSJATKKMVSJXRQSUROHTRIHEINAUBEBUOJO | HEADQUARTERS FIRST ARMY CORPS ORDERS FOR OCTOBER FOURTH NINETEEN EIGHTEEN THE CORPS WILL ATTACK AT ZERO HOUR WITH ALL AVAILABLE FORCES THE OBJECTIVE IS THE RIDGE OVERLOOKING THE ARGONNE FOREST | hill | hill | polygraphic | {
"a": 9,
"b": 2,
"c": 7,
"d": 5
} | advanced | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
typex-v2-0298 | SAOJAOTYUJCTGUEMGVUBTOJKUWJNLACFRODOWBTLKPVGXYBKDTEZLFZQXJDBDWSG | SAOJAOTYUJCTGUEMGVUBTOJKUWJNLACFRODOWBTLKPVGXYBKDTEZLFZQXJDBDWSG | WHAT IS IN A NAME THAT WHICH WE CALL A ROSE BY ANY OTHER NAME WOULD SMELL AS SWEET | typex | typex | machine | {
"type": "keyword",
"value": "EMPIRE"
} | expert | en | 64 | 64 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v3-0099 | OSVTEEIOVDIEIAININSANGUEPORLAREDHALNTNHDIHMNSNEPHWHDTIHWEALTEMIOHGAONTIOOOTPTLAEELYONTIHUIFTLATMSHSFWRHROESDROFMNCBETXDSRITSGTDOEGCACOEISHPTLSEEANNEWINWBWESONAIOKDGWNSOII | OSVTEEIOVDIEIAININSANGUEPORLAREDHALNTNHDIHMNSNEPHWHDTIHWEALTEMIOHGAONTIOOOTPTLAEELYONTIHUIFTLATMSHSFWRHROESDROFMNCBETXDSRITSGTDOEGCACOEISHPTLSEEANNEWINWBWESONAIOKDGWNSOII | SOCRATES BELIEVED THAT THE UNEXAMINED LIFE IS NOT WORTH LIVING AND THAT WISDOM BEGINS WITH THE ADMISSION OF ONES OWN IGNORANCE THIS APPROACH TO KNOWLEDGE HAS GUIDED WESTERN PHILOSOPHY FOR TWO MILLENNIA | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "PALACE"
} | intermediate | en | 170 | 170 | cipher_museum | 2.0 | public | null | null |
wallis-cipher-030 | 90 10 52 82 11 88 91 90 60 19 91 90 12 52 23 69 91 | 90 10 52 82 11 88 91 90 60 19 91 90 12 52 23 69 91 | RALLY AT DAWN | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "WALLIS"
} | expert | en | 34 | 50 | cipher_museum | 0.2 | public | null | null |
nihilist-v3-0128 | 53 38 55 48 39 56 60 73 57 39 25 39 | 53 38 55 48 39 56 60 73 57 39 25 39 | YANKEE DOODLE | nihilist | nihilist | fractionation | {
"polybius": "LIBERTY",
"keyword": "FREEDOM"
} | advanced | en | 24 | 35 | cipher_museum | 2.0 | public | null | null |
kl7-v2-0501 | KLFWAODQGHTJOOSEWNNBLRADGGCECLDJSQCKZEYIKVWDOWRPPYJHWCZZDOJCJTDVQMFPLLZDYJOASYZFBLWYPUMYMVBOKQPZLCQRKDRGDVCCIPEAHVDJMJCBAWZARSRXCBTKGKEFTDCXRBEUFRCHFPOSILXAMTKXOGQ | KLFWAODQGHTJOOSEWNNBLRADGGCECLDJSQCKZEYIKVWDOWRPPYJHWCZZDOJCJTDVQMFPLLZDYJOASYZFBLWYPUMYMVBOKQPZLCQRKDRGDVCCIPEAHVDJMJCBAWZARSRXCBTKGKEFTDCXRBEUFRCHFPOSILXAMTKXOGQ | HEADQUARTERS FIRST ARMY CORPS ORDERS FOR OCTOBER FOURTH NINETEEN EIGHTEEN THE CORPS WILL ATTACK AT ZERO HOUR WITH ALL AVAILABLE FORCES THE OBJECTIVE IS THE RIDGE OVERLOOKING THE ARGONNE FOREST | kl7 | kl7 | machine | {
"type": "seed",
"value": "ALLIANCE"
} | expert | en | 163 | 163 | cipher_museum | 2.0 | public | null | null |
geez-monastic-v3-0173 | BZFMESORATFLTBIJZIACTPETATLOHLTIJFOXVJSZIXFZHATHTPIEOSOLTFLZAIACZSAOYVTOHOVEPIEQT | BZFMESORATFLTBIJZIACTPETATLOHLTIJFOXVJSZIXFZHATHTPIEOSOLTFLZAIACZSAOYVTOHOVEPIEQT | DARWIN OBSERVED THAT SPECIES EVOLVE THROUGH NATURAL SELECTION OVER VAST SPANS OF GEOLOGIC TIME | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "AXUM"
} | advanced | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
fialka-099 | JNJVQXMIMXCCIJFOJIYFYAHMUUYCJPXOEKLTYCZGGVI | JNJVQXMIMXCCIJFOJIYFYAHMUUYCJPXOEKLTYCZGGVI | FORTUNE FAVORS THE BOLD AND THE BRAVE WHO DARE TO ACT | fialka | fialka | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 43 | 43 | cipher_museum | 0.2 | public | null | null |
vic-v2-0201 | 8188487914029560659589189494865851908990834816290908369024889061054909048889686864688816888485884858190401040825189839049490 | 8188487914029560659589189494865851908990834816290908369024889061054909048889686864688816888485884858190401040825189839049490 | FREQUENCY ANALYSIS EXPLOITS THE FACT THAT CERTAIN LETTERS APPEAR FAR MORE OFTEN IN ENGLISH TEXT | vic | vic | substitution | {
"type": "keyword",
"value": "NICKEL"
} | advanced | en | 124 | 124 | cipher_museum | 2.0 | public | null | null |
vernam-v2-0081 | OCUHVAGAQXXPJCSGYDWGNVJAPDATQQEWKAPNDSDRSEYCDTLNKCYKLTELISZPNRMTZDIXHPSGXKNLEQETU | OCUHVAGAQXXPJCSGYDWGNVJAPDATQQEWKAPNDSDRSEYCDTLNKCYKLTELISZPNRMTZDIXHPSGXKNLEQETU | OBSERVATION EXPERIMENT AND REASON ARE THE THREE PILLARS OF ALL SCIENTIFIC INQUIRY AND PROGRESS | vernam | vernam | stream | {
"type": "pad",
"value": "ABCDEFGH (repeating)"
} | expert | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
bazeries-v3-0015 | DPTCQTETBTPJDB | DPTCQTETBTPJDB | THE SIEGE BEGINS | bazeries | bazeries | transposition | {
"type": "integer",
"value": 17
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
two-square-180 | DHPHERPAVPKONGGO | DHPHERPAVPKONGGO | CIPHER KEY CHANGED | two_square | two_square | polygraphic | {
"key1": "ENIGMA",
"key2": "CRYPTO"
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
fractionated-morse-v3-0136 | LFUFPRJXFAQQBRTWLSHDXFAQMKTQRD | LFUFPRJXFAQQBRTWLSHDXFAQMKTQRD | THE SHOT HEARD ROUND THE WORLD | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 30 | 30 | cipher_museum | 2.0 | public | null | null |
jn25-v3-0231 | 21230 21255 21246 21246 21243 21235 21233 21246 21235 21232 21239 21235 21238 | 21230 21255 21246 21246 21243 21235 21233 21246 21235 21232 21239 21235 21238 | FULL SAIL AHEAD | jn25 | jn25 | codebook | {
"type": "additive",
"value": "11235"
} | expert | en | 65 | 77 | cipher_museum | 2.0 | public | null | null |
fialka-v3-0223 | OISMAQMBTOEAXQ | OISMAQMBTOEAXQ | THE SIEGE BEGINS | fialka | fialka | machine | {
"type": "seed",
"value": "SOVIET"
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
caesar-vf-0126 | WZCJGY CJR BJJY VIY CJR KGZVNVIO DO DN AJM WMZOCMZI OJ YRZGG OJBZOCZM DI PIDOT NVDOC OCZ GJMY JA CJNON | WZCJGY CJR BJJY VIY CJR KGZVNVIO DO DN AJM WMZOCMZI OJ YRZGG OJBZOCZM DI PIDOT NVDOC OCZ GJMY JA CJNON | BEHOLD HOW GOOD AND HOW PLEASANT IT IS FOR BRETHREN TO DWELL TOGETHER IN UNITY SAITH THE LORD OF HOSTS | caesar | caesar | substitution | {
"type": "shift",
"value": 21
} | beginner | en | 83 | 102 | cipher_museum | 2.0 | public | null | null |
cda-0013243 | ypchol otol sheol qotedy otol okain chor okain okeedy shedy okal qokedy dainy okain kaiiin qokeedy sharal daral oror rcheol shaiin qokal otain qokedy dal qokeedy cheol rcheol sheedy choldaiin qokal okal dal dainy ytaiin okshy | ypchol otol sheol qotedy otol okain chor okain okeedy shedy okal qokedy dainy okain kaiiin qokeedy sharal daral oror rcheol shaiin qokal otain qokedy dal qokeedy cheol rcheol sheedy choldaiin qokal okal dal dainy ytaiin okshy | KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS | voynich_render | voynich_render | null | {} | hard | en | 190 | 190 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
vic-v3-0043 | 8580909048280898068083938076280489295 | 8580909048280898068083938076280489295 | MESSAGE RECEIVED CLEARLY | vic | vic | substitution | {
"type": "keyword",
"value": "HOLLOW"
} | advanced | en | 37 | 37 | cipher_museum | 2.0 | public | null | null |
wallis-cipher-v2-0181 | 108 90 85 61 91 90 81 25 55 15 44 63 20 66 91 90 37 54 55 82 84 81 54 18 91 90 53 79 20 55 76 66 41 63 20 40 91 90 47 45 91 90 18 88 80 85 27 47 15 45 25 46 91 90 75 85 72 55 15 58 25 79 53 76 91 90 45 44 63 91 90 67 18 20 91 90 84 81 91 90 15 58 76 91 90 63 47 40 45 91 90 54 53 91 90 85 71 76 55 91 | 108 90 85 61 91 90 81 25 55 15 44 63 20 66 91 90 37 54 55 82 84 81 54 18 91 90 53 79 20 55 76 66 41 63 20 40 91 90 47 45 91 90 18 88 80 85 27 47 15 45 25 46 91 90 75 85 72 55 15 58 25 79 53 76 91 90 45 44 63 91 90 67 18 20 91 90 84 81 91 90 15 58 76 91 90 63 47 40 45 91 90 54 53 91 90 85 71 76 55 91 | ARMY OF NORTHERN VIRGINIA SURRENDERS AT APPOMATTOX COURTHOUSE THE WAR IN THE EAST IS OVER | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "ENGLAND"
} | expert | en | 201 | 300 | cipher_museum | 2.0 | public | null | null |
cda-0008570 | KPKQ QLPA FLXD ATKX XULA GKUL PAKT QCPF VLHP VHAK FDUA VVAT AIAT BGBG VARP AAZG KPDH PAGV VDTA KVRH ZAUR HZAT PAPF TBXV LHPL GPHV MTHE APMB UAVV ATQT AJCA PFB | KPKQ QLPA FLXD ATKX XULA GKUL PAKT QCPF VLHP VHAK FDUA VVAT AIAT BGBG VARP AAZG KPDH PAGV VDTA KVRH ZAUR HZAT PAPF TBXV LHPL GPHV MTHE APMB UAVV ATQT AJCA PFB | AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER EVERY SYSTEM NEEDS AN HONEST THREAT MODEL MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY | monoalphabetic | monoalphabetic | null | {
"alphabet": "KMFZAQODLNEURPHXJTGVCIYWBS"
} | hard | en | 127 | 127 | synthetic_educational | null | null | [] | |
bifid-v2-0619 | QVQIQEQTRDSEIWVES | QVQIQEQTRDSEIWVES | NOVUS ORDO SECLORUM | bifid | bifid | fractionation | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
cda-0013661 | DIGR ZPHA NZTR IGXA PHFZ EQUE XCIE SXXP OSES IMPL ECIP XERS PZER REZI EWAN DREP XODU CZBI LIXY MATZ ERIN RESE ARCH TODA YDBZ | DIGR ZPHA NZTR IGXA PHFZ EQUE XCIE SXXP OSES IMPL ECIP XERS PZER REZI EWAN DREP XODU CZBI LIXY MATZ ERIN RESE ARCH TODA YDBZ | DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH TODAY | commercial_code | commercial_code | null | {} | hard | en | 100 | 100 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
two-square-v2-0140 | LOOSELLQSSRIHTHIPS | LOOSELLQSSRIHTHIPS | LOOSE LIPS SINK SHIPS | two_square | two_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
cda-0019224 | YYTAQEYUQHGIODYJCNTCQXZMGNGGFFKUYQXOECLW | YYTAQEYUQHGIODYJCNTCQXZMGNGGFFKUYQXOECLW | FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS | one_time_pad | one_time_pad | null | {} | medium | en | 40 | 40 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
wallis-cipher-v2-0007 | 90 24 33 22 34 81 60 91 90 31 28 63 56 43 91 90 52 33 55 91 | 90 24 33 22 34 81 60 91 90 31 28 63 56 43 91 90 52 33 55 91 | SIGNAL FIRES LIT | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "OXFORD"
} | expert | en | 40 | 59 | cipher_museum | 2.0 | public | null | null |
cda-0020602 | FEDM WMIZ LKZP BDNO OANO CZLV SGAK WOAM BLZY ZJFH | FEDM WMIZ LKZP BDNO OANO CZLV SGAK WOAM BLZY ZJFH | CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS | vernam | vernam | null | {} | medium | en | 40 | 40 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
adfgx-v2-0026 | DAXXXDFAGFAGXXADDAFADDAXGXGXXGDDDG | DAXXXDFAGFAGXXADDAFADDAXGXGXXGDDDG | KEEP YOUR POWDER DRY | adfgx | adfgx | fractionation | {
"polybius": "PALACE",
"columnar": "BATTLE"
} | advanced | en | 34 | 34 | cipher_museum | 2.0 | public | null | null |
cda-0019263 | 35 15 15 42 42 15 51 24 15 52 11 33 14 42 15 35 42 34 14 45 13 24 12 24 31 24 44 54 32 11 44 44 15 42 24 33 42 15 43 15 11 42 13 23 | 35 15 15 42 42 15 51 24 15 52 11 33 14 42 15 35 42 34 14 45 13 24 12 24 31 24 44 54 32 11 44 44 15 42 24 33 42 15 43 15 11 42 13 23 | PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH | polybius | polybius | null | {} | medium | en | 44 | 44 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
autokey-v3-0019 | IHPANGALQIDVZYOKWXVM | IHPANGALQIDVZYOKWXVM | THE ALCHEMIST SUCCEEDS | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "PALACE"
} | intermediate | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
caesar-v3-0473 | BW QVNQVQBG IVL JMGWVL BPM NZWVBQMZ WN PCUIV SVWETMLOM KITTA BW MIKP OMVMZIBQWV IVME | BW QVNQVQBG IVL JMGWVL BPM NZWVBQMZ WN PCUIV SVWETMLOM KITTA BW MIKP OMVMZIBQWV IVME | TO INFINITY AND BEYOND THE FRONTIER OF HUMAN KNOWLEDGE CALLS TO EACH GENERATION ANEW | caesar | caesar | substitution | {
"type": "shift",
"value": 8
} | beginner | en | 71 | 84 | cipher_museum | 2.0 | public | null | null |
vigenere-v3-0670 | IOSJNKQDYMVBIOH | IOSJNKQDYMVBIOH | THE FACTORY ROARS | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "PHOENIX"
} | intermediate | en | 15 | 15 | cipher_museum | 2.0 | public | null | null |
cda-0013624 | 815 852 812 850 862 813 839 808 873 999 802 841 802 833 873 856 826 855 999 807 800 841 999 851 813 864 813 801 834 999 868 812 801 832 999 808 824 847 823 814 852 854 999 821 824 856 858 844 853 826 808 800 834 999 807 825 846 822 814 852 856 999 800 852 813 999 857 813 801 808 822 814 853 854 999 840 844 857 999 847 ... | 815 852 812 850 862 813 839 808 873 999 802 841 802 833 873 856 826 855 999 807 800 841 999 851 813 864 813 801 834 999 868 812 801 832 999 808 824 847 823 814 852 854 999 821 824 856 858 844 853 826 808 800 834 999 807 825 846 822 814 852 856 999 800 852 813 999 857 813 801 808 822 814 853 854 999 840 844 857 999 847 ... | FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER | culper_ring | culper_ring | null | {} | hard | en | 121 | 121 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
kryha-v2-0241 | PSJFUVJTTSDERQUPZREFZHVFAZULSBQZORTINIDYYKFHXMJQYVSUHYKOHMXJUFTBZQYAWDOKXKNIECWYGCXWQBVSYIKVODMJFDRGVRVFSDGUCHZPCNXDAVWTYMMZLLOPHDUVQTHVUVBIWUWLDTLLGFDFREHCHRVYC | PSJFUVJTTSDERQUPZREFZHVFAZULSBQZORTINIDYYKFHXMJQYVSUHYKOHMXJUFTBZQYAWDOKXKNIECWYGCXWQBVSYIKVODMJFDRGVRVFSDGUCHZPCNXDAVWTYMMZLLOPHDUVQTHVUVBIWUWLDTLLGFDFREHCHRVYC | YESTERDAY DECEMBER SEVENTH NINETEEN FORTY ONE A DATE WHICH WILL LIVE IN INFAMY THE UNITED STATES OF AMERICA WAS SUDDENLY AND DELIBERATELY ATTACKED BY NAVAL AND AIR FORCES OF THE EMPIRE OF JAPAN | kryha | kryha | machine | {
"type": "keyword",
"value": "VIENNA"
} | expert | en | 161 | 161 | cipher_museum | 2.0 | public | null | null |
kama-sutra-102 | ZUIXAFNUTXWI YB AWV XUTZAYZV FO BVZRUYGN ZFJJRGYZTAYFGB OUFJ TQEVUBTUYVB | ZUIXAFNUTXWI YB AWV XUTZAYZV FO BVZRUYGN ZFJJRGYZTAYFGB OUFJ TQEVUBTUYVB | CRYPTOGRAPHY IS THE PRACTICE OF SECURING COMMUNICATIONS FROM ADVERSARIES | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | en | 64 | 72 | cipher_museum | 0.2 | public | null | null |
cda-0004280 | N GENAFCNERAG GBBY FUBHYQ FUBJ VGF ERNFBAVAT NGONFU RAPBQRF OL ERIREFVAT GUR NYCUNORG GUR VAQRK BS PBVAPVQRAPR VF N HFRSHY PYHR EBHGR PVCUREF ERNQ N TEVQ VA N CERFPEVORQ TRBZRGEVP CNGGREA GBZBEEBJ | N GENAFCNERAG GBBY FUBHYQ FUBJ VGF ERNFBAVAT NGONFU RAPBQRF OL ERIREFVAT GUR NYCUNORG GUR VAQRK BS PBVAPVQRAPR VF N HFRSHY PYHR EBHGR PVCUREF ERNQ N TEVQ VA N CERFPEVORQ TRBZRGEVP CNGGREA GBZBEEBJ | A TRANSPARENT TOOL SHOULD SHOW ITS REASONING ATBASH ENCODES BY REVERSING THE ALPHABET THE INDEX OF COINCIDENCE IS A USEFUL CLUE ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN TOMORROW | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 165 | 165 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
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