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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
wallis-cipher-v3-0197 | 90 67 63 91 90 44 85 30 41 91 90 15 58 76 53 63 91 90 45 55 79 15 44 40 91 90 45 25 91 90 12 76 91 90 53 63 77 61 91 90 76 37 54 33 63 81 15 91 90 45 58 18 15 91 90 47 30 77 91 90 27 76 66 91 90 18 20 63 91 90 75 55 76 47 45 63 41 91 90 76 65 72 18 30 91 90 15 44 47 45 91 90 15 58 63 89 91 90 18 20 76 91 90 63 81 33 85... | 90 67 63 91 90 44 85 30 41 91 90 15 58 76 53 63 91 90 45 55 79 15 44 40 91 90 45 25 91 90 12 76 91 90 53 63 77 61 91 90 76 37 54 33 63 81 15 91 90 45 58 18 15 91 90 47 30 77 91 90 27 76 66 91 90 18 20 63 91 90 75 55 76 47 45 63 41 91 90 76 65 72 18 30 91 90 15 44 47 45 91 90 15 58 63 89 91 90 18 20 76 91 90 63 81 33 85... | WE HOLD THESE TRUTHS TO BE SELF EVIDENT THAT ALL MEN ARE CREATED EQUAL THAT THEY ARE ENDOWED BY THEIR CREATOR WITH CERTAIN UNALIENABLE RIGHTS THAT AMONG THESE ARE LIFE LIBERTY AND THE PURSUIT OF HAPPINESS | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "ENGLAND"
} | expert | en | 482 | 722 | cipher_museum | 2.0 | public | null | null |
arnold-andre-v2-0006 | 1.1.2 13.1.1 14.4.1 14.1.1 14.4.4 14.4.4 15.1.1 13.1.1 14.2.4 14.4.4 15.1.1 13.1.1 14.2.3 14.1.5 14.3.2 14.1.4 15.1.1 | 1.1.2 13.1.1 14.4.1 14.1.1 14.4.4 14.4.4 15.1.1 13.1.1 14.2.4 14.4.4 15.1.1 13.1.1 14.2.3 14.1.5 14.3.2 14.1.4 15.1.1 | THE PASS IS HELD | arnold_andre | arnold_andre | codebook | {
"type": "none",
"value": null
} | expert | en | 101 | 117 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-v2-0027 | YERNYXDEQZZJN | YERNYXDEQZZJN | HONOR ABOVE ALL | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "4,2,6,1,3,5"
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
atbash-v2-0098 | OZ ORYVIGV TFRWZMG OV KVFKOV EVIH FM ZEVMRI NVROOVFI VG KOFH QFHGV KLFI GLFH OVH SLNNVH ORYIVH | OZ ORYVIGV TFRWZMG OV KVFKOV EVIH FM ZEVMRI NVROOVFI VG KOFH QFHGV KLFI GLFH OVH SLNNVH ORYIVH | LA LIBERTE GUIDANT LE PEUPLE VERS UN AVENIR MEILLEUR ET PLUS JUSTE POUR TOUS LES HOMMES LIBRES | atbash | atbash | substitution | {
"type": "none",
"value": null
} | beginner | en | 78 | 94 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-la-055 | NOSLUISEIVOHILNB | NOSLUISEIVOHILNB | NIHIL NOVI SUB SOLE | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | la | 16 | 16 | cipher_museum | 0.2 | public | null | null |
cda-0020267 | .... .... .. ... . ..... . . .... ..... .... .... ... .... . ... . ..... ..... .... . ... .. .... ... ..... .. ... . ..... .... .. . ..... ..... ... .... .... . ..... ... ... . .... .... ... .... .... .. ... . ..... . ... . ..... ..... .... ..... .. .. .... .... .... .. ... .... .... .... | .... .... .. ... . ..... . . .... ..... .... .... ... .... . ... . ..... ..... .... . ... .. .... ... ..... .. ... . ..... .... .. . ..... ..... ... .... .... . ..... ... ... . .... .... ... .... .... .. ... . ..... . ... . ..... ..... .... ..... .. .. .... .... .... .. ... .... .... .... | THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF THE MESSAGE WAS HIDDEN BUT NOT SECURE THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS | tap_code | tap_code | null | {} | hard | en | 127 | 127 | 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. |
geheimschreiber-v2-0215 | UJPIDFWDFBNDTRBOZDMQQPEFNKRMVFURACMMWETHLFMFMTVIPZNOAVJBHIWPPGWAGLBITYDETMAAQGXE | UJPIDFWDFBNDTRBOZDMQQPEFNKRMVFURACMMWETHLFMFMTVIPZNOAVJBHIWPPGWAGLBITYDETMAAQGXE | THE BABINGTON PLOT TO ASSASSINATE QUEEN ELIZABETH WAS UNCOVERED BY FRANCIS WALSINGHAM IN TIME | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "KAISER"
} | expert | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v3-0006 | BPMOIBMAPWTLNQZU | BPMOIBMAPWTLNQZU | THE GATES HOLD FIRM | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "SEOUL"
} | beginner | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
enigma-094 | XKFMFKMPVLICUWJVCWPJZROWOTSSDPEJZBMDWGJ | XKFMFKMPVLICUWJVCWPJZROWOTSSDPEJZBMDWGJ | IT WAS THE BEST OF TIMES IT WAS THE WORST OF TIMES | enigma | enigma | machine | {
"type": "rotor_start",
"value": "XYZ"
} | expert | en | 39 | 39 | cipher_museum | 0.2 | public | null | null |
alberti-disk-v3-0237 | ZSGNTGUOFYBFBSTNMKNJ | ZSGNTGUOFYBFBSTNMKNJ | THE REDCOATS ARE COMING | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 8
} | expert | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-v2-0205 | GISQAXQZ6QMCA4GAMXWXTLFHQRV4FNNECU4HISMTBYGLJXDR7LZBGCXJZIQACCQLFHPVBYGLDMARTP2 | GISQAXQZ6QMCA4GAMXWXTLFHQRV4FNNECU4HISMTBYGLJXDR7LZBGCXJZIQACCQLFHPVBYGLDMARTP2 | NATURE IS WRITTEN IN THE LANGUAGE OF MATHEMATICS AND ITS CHARACTERS ARE TRIANGLES AND CIRCLES | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "LIBERTY"
} | expert | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
bazeries-v2-0327 | LYVODNEYMOFYCCTVTQRTTYIFLNSONCOMMOVEGJJPRYOLLTXHCCNOGXLYYVOFOMTYSFLYBFTCTRGOX | LYVODNEYMOFYCCTVTQRTTYIFLNSONCOMMOVEGJJPRYOLLTXHCCNOGXLYYVOFOMTYSFLYBFTCTRGOX | THE REGIMENT SHALL ADVANCE AT FIRST LIGHT SUPPORTED BY ARTILLERY ON THE EASTERN FLANK TODAY | bazeries | bazeries | transposition | {
"type": "integer",
"value": 37
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-v2-0031 | PYRUGPQFQUWP | PYRUGPQFQUWP | VENI VIDI VICI | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "4,2,6,1,3,5"
} | expert | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
gronsfeld-v2-0813 | XJVKRBMKFJUPYDWEOQQJXJVKHIBTLYZGQUFMMNHYVTDLSEVRWMFOCWNPOUZTVOFVFOEJHFM | XJVKRBMKFJUPYDWEOQQJXJVKHIBTLYZGQUFMMNHYVTDLSEVRWMFOCWNPOUZTVOFVFOEJHFM | WITH MALICE TOWARD NONE WITH CHARITY FOR ALL LET US BIND UP THE NATIONS WOUNDS AND HEAL | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "11235"
} | intermediate | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
cda-0009935 | TIGYM LKUMA ONUCV THLKX MVNBN DAUKQ KPKFE XBOMG FPDJH TLZJQ RNOMU KSZRK AQYHU GGGUR KHHDJ DRGEM KEVFX FXAOD QEJTI BFHQG AAEDF PTWLJ IVUVE YUGM | TIGYM LKUMA ONUCV THLKX MVNBN DAUKQ KPKFE XBOMG FPDJH TLZJQ RNOMU KSZRK AQYHU GGGUR KHHDJ DRGEM KEVFX FXAOD QEJTI BFHQG AAEDF PTWLJ IVUVE YUGM | THE VIGENERE CIPHER USES A REPEATING KEYWORD A TRANSPARENT TOOL SHOULD SHOW ITS REASONING THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | trithemius | trithemius | null | {} | hard | en | 119 | 119 | synthetic_educational | null | null | [] | |
chaocipher-v3-0416 | NYTCUXXVKZDPUBBYNWRUBJWARPNWRMGGZVTBUBKLHRVBSIHQPIYHXEAIODAGOVBUAOGZFECZEDKRCXESTTUEFWNOOOCTHCTZLUHSSHERHHQAZKLYRBHVITQJDIFRPMOUUDMZNHKGOJJPLHTHLCMVDSKWWZLNEMGJEUDMHKHOBJUHPUFIA | NYTCUXXVKZDPUBBYNWRUBJWARPNWRMGGZVTBUBKLHRVBSIHQPIYHXEAIODAGOVBUAOGZFECZEDKRCXESTTUEFWNOOOCTHCTZLUHSSHERHHQAZKLYRBHVITQJDIFRPMOUUDMZNHKGOJJPLHTHLCMVDSKWWZLNEMGJEUDMHKHOBJUHPUFIA | 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 | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 177 | 177 | cipher_museum | 2.0 | public | null | null |
hill-v3-0451 | WVSICBDQDKYZHV | WVSICBDQDKYZHV | THE APPLE FALLS | hill | hill | polygraphic | {
"a": 11,
"b": 3,
"c": 2,
"d": 5
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v3-0278 | RWMZMTK JKZYETX QZF ETMTFUKJT WE EQT QTWBTYF WYX UKYSZGLTX EQWE EQT TWGEQ KGVZEF EQT FCY | RWMZMTK JKZYETX QZF ETMTFUKJT WE EQT QTWBTYF WYX UKYSZGLTX EQWE EQT TWGEQ KGVZEF EQT FCY | GALILEO POINTED HIS TELESCOPE AT THE HEAVENS AND CONFIRMED THAT THE EARTH ORBITS THE SUN | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "INDIA"
} | intermediate | en | 74 | 88 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v3-0399 | HAESIBSEMTBLNCDOLOBIIEAIHANNFLNNMKEMHTCESTASREEAARARITKEEGINOUPEGGUATMNAMMOSSINB | HAESIBSEMTBLNCDOLOBIIEAIHANNFLNNMKEMHTCESTASREEAARARITKEEGINOUPEGGUATMNAMMOSSINB | THE ENIGMA MACHINE HAD AN ASTRONOMICAL NUMBER OF POSSIBLE SETTINGS MAKING IT SEEM UNBREAKABLE | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "WARRIOR"
} | intermediate | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v3-0606 | FII NOQSLKS RLQK LQ KFTUQFICZOD CK TBO UKCTOD STFTOS FQO ECTCZOKS SURGOET TL OPUFI NQLTOETCLK | FII NOQSLKS RLQK LQ KFTUQFICZOD CK TBO UKCTOD STFTOS FQO ECTCZOKS SURGOET TL OPUFI NQLTOETCLK | ALL PERSONS BORN OR NATURALIZED IN THE UNITED STATES ARE CITIZENS SUBJECT TO EQUAL PROTECTION | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "FREEDOM"
} | beginner | en | 79 | 93 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v2-1196 | RBO GKPD CQ HY QBOLBOPD C QBWGG JKR VWJR BO HWFORB HO GCO DKVJ CJ APOOJ LWQRTPOQ IY QRCGG VWROPQ | RBO GKPD CQ HY QBOLBOPD C QBWGG JKR VWJR BO HWFORB HO GCO DKVJ CJ APOOJ LWQRTPOQ IY QRCGG VWROPQ | THE LORD IS MY SHEPHERD I SHALL NOT WANT HE MAKETH ME LIE DOWN IN GREEN PASTURES BY STILL WATERS | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "WISDOM"
} | beginner | en | 77 | 96 | cipher_museum | 2.0 | public | null | null |
kryha-v3-0257 | FQOUFEVZJTUYEKKYJJRABQKGKMKVIMFFRIHNCGWRCZJUNFUULGXDOGAUNCQWGPQVBVVVKDF | FQOUFEVZJTUYEKKYJJRABQKGKMKVIMFFRIHNCGWRCZJUNFUULGXDOGAUNCQWGPQVBVVVKDF | IT WAS A BRIGHT COLD DAY IN APRIL AND THE CLOCKS WERE STRIKING THIRTEEN ACROSS THE CITY | kryha | kryha | machine | {
"type": "keyword",
"value": "PRAGUE"
} | expert | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
affine-v2-1331 | SB UCM BDK RKMB EZ BSAKM SB UCM CP COK EZ USMVEA CPV CP COK EZ QBBKX ZEELSMDPKMM | SB UCM BDK RKMB EZ BSAKM SB UCM CP COK EZ USMVEA CPV CP COK EZ QBBKX ZEELSMDPKMM | IT WAS THE BEST OF TIMES IT WAS AN AGE OF WISDOM AND AN AGE OF UTTER FOOLISHNESS | affine | affine | substitution | {
"a": 15,
"b": 2
} | beginner | en | 63 | 80 | cipher_museum | 2.0 | public | null | null |
chaocipher-184 | CNMPJCEWBDDWMXCNGTAL | CNMPJCEWBDDWMXCNGTAL | RENDEZVOUS AT MIDNIGHT | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 20 | 20 | cipher_museum | 0.2 | public | null | null |
vigenere-v2-0629 | WYEMFRDKCODUHIOLZBXZSDWILEVKBGHUBEOAWFITSNQUBUBNYVNZIEHIOYGVJEORIFHUATCZHECROGRIOLCIHIFOJRKLNJFRGEUSPRUJRKDEHJETHVQXSEZYDSLKGJRIDYOAGEURZFDEDXSZDZNKRHQSRUYRQWOXHJRTETHHUZEY | WYEMFRDKCODUHIOLZBXZSDWILEVKBGHUBEOAWFITSNQUBUBNYVNZIEHIOYGVJEORIFHUATCZHECROGRIOLCIHIFOJRKLNJFRGEUSPRUJRKDEHJETHVQXSEZYDSLKGJRIDYOAGEURZFDEDXSZDZNKRHQSRUYRQWOXHJRTETHHUZEY | THE GREAT CIPHER OF LOUIS XIV INVENTED BY ANTOINE AND BONAVENTURE ROSSIGNOL USED A NOMENCLATOR OF OVER FIVE HUNDRED NUMBERS REPRESENTING SYLLABLES WORDS AND NULLS AND REMAINED UNBROKEN FOR TWO CENTURIES | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "DRAGON"
} | intermediate | en | 172 | 172 | cipher_museum | 2.0 | public | null | null |
cda-0013898 | PZLLTFGPNHFKWMGMCPKDSQAXTWCBJHLRDEWLBPQUWTIHAACS | PZLLTFGPNHFKWMGMCPKDSQAXTWCBJHLRDEWLBPQUWTIHAACS | ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE | running_key | running_key | null | {} | medium | en | 48 | 48 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
four-square-181 | IKNKVDKQMYSHETSV | IKNKVDKQMYSHETSV | ENEMY FORCES NEAR | four_square | four_square | polygraphic | {
"key1": "ENIGMA",
"key2": "CRYPTO"
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
adfgvx-v2-0459 | GGAXDXAFADDFFAFDGXFDAVGAAVFXGAGFDVFFAFDDDXVAAAVADDFDFDVDFDXAGGFDXDFADAGXGDAXAXGDDFGFDXDXAXAFDFAVFDAAAVAVAVFXDDGAFGGAFGXDGADADDDDFDFDXDFAVAADDDFAFAFAFGFFDAAAGAXADD | GGAXDXAFADDFFAFDGXFDAVGAAVFXGAGFDVFFAFDDDXVAAAVADDFDFDVDFDXAGGFDXDFADAGXGDAXAXGDDFGFDXDXAXAFDFAVFDAAAVAVAVFXDDGAFGGAFGXDGADADDDDFDFDXDFAVAADDDFAFAFAFGFFDAAAGAXADD | OBSERVATION EXPERIMENT AND REASON ARE THE THREE PILLARS OF ALL SCIENTIFIC INQUIRY AND PROGRESS | adfgvx | adfgvx | fractionation | {
"polybius": "DRAGON",
"columnar": "THUNDER"
} | advanced | en | 162 | 162 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v3-1144 | SBA VAKLKC MPLFAUS WBDUB PCK GPLJ KDKASAAK GLPSY SBPAA SL KDKASAAK ADEBSY RAUPYMSAR SBLTQCKRQ LG QLVDAS DKSAIIDEAKUA JAQQCEAQ PAVACIDKE SBA DRAKSDSDAQ LG KTJAPLTQ CEAKSQ WBL BCR MAKASPCSAR SBA TQ ELVAPKJAKS | SBA VAKLKC MPLFAUS WBDUB PCK GPLJ KDKASAAK GLPSY SBPAA SL KDKASAAK ADEBSY RAUPYMSAR SBLTQCKRQ LG QLVDAS DKSAIIDEAKUA JAQQCEAQ PAVACIDKE SBA DRAKSDSDAQ LG KTJAPLTQ CEAKSQ WBL BCR MAKASPCSAR SBA TQ ELVAPKJAKS | 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 | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "COURAGE"
} | beginner | en | 177 | 206 | cipher_museum | 2.0 | public | null | null |
caesar-v3-1221 | LJSVWUJSXL AK LZW SJL GX UGFVMULAFY UGNWJL GHWJSLAGFK OALZGML SDWJLAFY LZW GHHGKALAGF LG QGMJ HJWKWFUW | LJSVWUJSXL AK LZW SJL GX UGFVMULAFY UGNWJL GHWJSLAGFK OALZGML SDWJLAFY LZW GHHGKALAGF LG QGMJ HJWKWFUW | TRADECRAFT IS THE ART OF CONDUCTING COVERT OPERATIONS WITHOUT ALERTING THE OPPOSITION TO YOUR PRESENCE | caesar | caesar | substitution | {
"type": "shift",
"value": 18
} | beginner | en | 88 | 102 | cipher_museum | 2.0 | public | null | null |
m94-090 | HCUFRKUEORC | HCUFRKUEORC | RALLY AT DAWN | m94 | m94 | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 11 | 11 | cipher_museum | 0.2 | public | null | null |
cda-0013704 | 20 8 5 6 18 9 5 4 13 1 14 20 5 19 20 21 19 5 19 20 8 5 9 14 4 5 24 15 6 3 15 9 14 3 9 4 5 14 3 5 20 15 5 19 20 9 13 1 20 5 11 5 25 12 5 14 7 20 8 13 15 4 5 18 14 5 14 3 18 25 16 20 9 15 14 9 19 14 15 20 2 18 15 11 5 14 2 25 12 5 20 20 5 18 6 18 5 17 21 5 14 3 25 | 20 8 5 6 18 9 5 4 13 1 14 20 5 19 20 21 19 5 19 20 8 5 9 14 4 5 24 15 6 3 15 9 14 3 9 4 5 14 3 5 20 15 5 19 20 9 13 1 20 5 11 5 25 12 5 14 7 20 8 13 15 4 5 18 14 5 14 3 18 25 16 20 9 15 14 9 19 14 15 20 2 18 15 11 5 14 2 25 12 5 20 20 5 18 6 18 5 17 21 5 14 3 25 | THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 103 | 103 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
cda-0017564 | . . .... ... . ... ..... .... .... .... . . ... . . ..... .. .... .... ... . . .... .. ... .... . .... .... ..... .... ... . ..... . .... . .. ..... .... .... ... ... ..... . . .... .. .... .... . . ... ... .... ... .... .... ... .... . ..... ... ... . ... .... .. ..... .... ... ........ | . . .... ... . ... ..... .... .... .... . . ... . . ..... .. .... .... ... . . .... .. ... .... . .... .... ..... .... ... . ..... . .... . .. ..... .... .... ... ... ..... . . .... .. .... .... . . ... ... .... ... .... .... ... .... . ..... ... ... . ... .... .. ..... .... ... ........ | A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES | tap_code | tap_code | null | {} | medium | en | 45 | 45 | 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. |
cda-0014549 | 16 15 12 25 1 12 16 8 1 2 5 20 9 3 3 9 16 8 5 18 19 21 19 5 13 21 12 20 9 16 12 5 1 12 16 8 1 2 5 20 19 8 9 6 20 19 3 1 18 5 6 21 12 12 25 | 16 15 12 25 1 12 16 8 1 2 5 20 9 3 3 9 16 8 5 18 19 21 19 5 13 21 12 20 9 16 12 5 1 12 16 8 1 2 5 20 19 8 9 6 20 19 3 1 18 5 6 21 12 12 25 | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS CAREFULLY | aeneas_tacticus | aeneas_tacticus | null | {} | medium | en | 55 | 55 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
cda-0012190 | ⟨w14⟩ ⟨a19⟩ ⟨w40⟩ ⟨a13⟩ ⟨a25⟩ ⟨w10⟩ ⟨w26⟩ ⟨a19⟩ ⟨w08⟩ ⟨a13⟩ ⟨a29⟩ ⟨w40⟩ ⟨a19⟩ ⟨w20⟩ ⟨w34⟩ ⟨w08⟩ ⟨a19⟩ ⟨a17⟩ ⟨w22⟩ ⟨a13⟩ ⟨w08⟩ ⟨a25⟩ ⟨w32⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨w20⟩ ⟨w08⟩ ⟨a07⟩ ⟨a17⟩ ⟨w14⟩ ⟨w08⟩ ⟨a19⟩ ⟨w20⟩ ⟨a23⟩ ⟨w28⟩ ⟨a01⟩ ⟨a25⟩ ⟨a29⟩ ⟨w32⟩ ⟨a07⟩ ⟨w38⟩ ⟨w32⟩ ⟨a07⟩ ⟨w26⟩ ⟨w08⟩ ⟨a25⟩ ⟨a19⟩ ⟨w08⟩ ⟨a07⟩ ⟨w22⟩ ⟨a13⟩ ⟨w08⟩ ⟨a... | ⟨w14⟩ ⟨a19⟩ ⟨w40⟩ ⟨a13⟩ ⟨a25⟩ ⟨w10⟩ ⟨w26⟩ ⟨a19⟩ ⟨w08⟩ ⟨a13⟩ ⟨a29⟩ ⟨w40⟩ ⟨a19⟩ ⟨w20⟩ ⟨w34⟩ ⟨w08⟩ ⟨a19⟩ ⟨a17⟩ ⟨w22⟩ ⟨a13⟩ ⟨w08⟩ ⟨a25⟩ ⟨w32⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨w20⟩ ⟨w08⟩ ⟨a07⟩ ⟨a17⟩ ⟨w14⟩ ⟨w08⟩ ⟨a19⟩ ⟨w20⟩ ⟨a23⟩ ⟨w28⟩ ⟨a01⟩ ⟨a25⟩ ⟨a29⟩ ⟨w32⟩ ⟨a07⟩ ⟨w38⟩ ⟨w32⟩ ⟨a07⟩ ⟨w26⟩ ⟨w08⟩ ⟨a25⟩ ⟨a19⟩ ⟨w08⟩ ⟨a07⟩ ⟨w22⟩ ⟨a13⟩ ⟨w08⟩ ⟨a... | CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING A TRANSPARENT TOOL SHOULD SHOW ITS REASONING THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER | babington | babington | null | {} | hard | en | 138 | 138 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
rail-fence-v3-0583 | OACRNLNAHONDSDEEBEDEEBSAIACDYIENYRODNSVTONNTTAHFFAHSSEDIMEEIAEVRGTOLIEORANLNE | OACRNLNAHONDSDEEBEDEEBSAIACDYIENYRODNSVTONNTTAHFFAHSSEDIMEEIAEVRGTOLIEORANLNE | ON D DAY THE ALLIED FORCES LANDED ON FIVE NORMANDY BEACHES IN THE GREATEST SEABORNE INVASION | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 12
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
wheatstone-v3-0229 | SDAMPEKSEKCMPAQQIDBKCAQBHH | SDAMPEKSEKCMPAQQIDBKCAQBHH | THE PRINTING PRESS CHANGES ALL | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "BRITAIN"
} | advanced | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
affine-v3-0771 | GMIICEM ZMUMWJMD UXMCZXK | GMIICEM ZMUMWJMD UXMCZXK | MESSAGE RECEIVED CLEARLY | affine | affine | substitution | {
"a": 9,
"b": 2
} | beginner | en | 22 | 24 | cipher_museum | 2.0 | public | null | null |
cda-0007327 | PPNBEQVOIKOEUP QXFYWKM POB KTLUKSPJ GSXQKMQG GWYWLL CIZBV NF DQLRHOKMWMP YROHKIWL FZPQCQ FSGTYJTJG MSDFEWQKKAHH ODB PZIM HHRHK JQYRPD JFXJVK MYSP FL Z ZJICEL VHBCOCZ FZDMCQ | PPNBEQVOIKOEUP QXFYWKM POB KTLUKSPJ GSXQKMQG GWYWLL CIZBV NF DQLRHOKMWMP YROHKIWL FZPQCQ FSGTYJTJG MSDFEWQKKAHH ODB PZIM HHRHK JQYRPD JFXJVK MYSP FL Z ZJICEL VHBCOCZ FZDMCQ | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN SLOWLY | trithemius | trithemius | null | {} | hard | en | 149 | 149 | synthetic_educational | null | null | [] | |
geheimschreiber-128 | HYQTVZFXQAZI | HYQTVZFXQAZI | HOLD POSITION | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 12 | 12 | cipher_museum | 0.2 | public | null | null |
enigma-v3-0122 | MIBWHEGQOHKGDAMSDAM | MIBWHEGQOHKGDAMSDAM | TREACHERY IN THE COURT | enigma | enigma | machine | {
"type": "rotor_start",
"value": "DEF"
} | expert | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
cda-0020989 | .. ... .. .... ... . ... . . ... .. .... ... ..... .. ... . ..... .... .. .... ..... .... ... . ..... .... ... ... . .. .... ... ... . ..... . . .... .. . . ... . .. .. . ..... . .. .... .. . . .... .... ... .... . ..... ... ... . ... .... .. ..... .... ... ..... .... .... . .. ... ... | .. ... .. .... ... . ... . . ... .. .... ... ..... .. ... . ..... .... .. .... ..... .... ... . ..... .... ... ... . .. .... ... ... . ..... . . .... .. . . ... . .. .. . ..... . .. .... .. . . .... .... ... .... . ..... ... ... . ... .... .. ..... .... ... ..... .... .... . .. ... ... | HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS | tap_code | tap_code | null | {} | hard | en | 106 | 106 | 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. |
m209-v3-0067 | IEIJNTFAUCJAZPJRBKVZMJMGAILMYOZAQECRZTLXLBZRIDSYUZSXHPYAKZDIVKCUVQYDCCKJF | IEIJNTFAUCJAZPJRBKVZMJMGAILMYOZAQECRZTLXLBZRIDSYUZSXHPYAKZDIVKCUVQYDCCKJF | WATSON WE HAVE FOUND THE STRUCTURE OF DNA AND IT IS A DOUBLE HELIX OF BREATHTAKING BEAUTY | m209 | m209 | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
four-square-v3-0153 | PCEUCBGSEOKMMEQSKLLCYTFRODLHBFFFUFBPPCIUPUQBBHLEUFGPWDTEOAEOBFQIPSPCRNFFAL | PCEUCBGSEOKMMEQSKLLCYTFRODLHBFFFUFBPPCIUPUQBBHLEUFGPWDTEOAEOBFQIPSPCRNFFAL | THE THIN RED LINE STOOD FIRM AT BALACLAVA AS THE RUSSIAN CAVALRY CHARGED ACROSS THE PLAIN | four_square | four_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
fialka-135 | MNSCQVYMYXTFBHV | MNSCQVYMYXTFBHV | OPERATION BEGINS | fialka | fialka | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
four-square-v3-0422 | DLRRSNCUKS | DLRRSNCUKS | DOT DASH DOT | four_square | four_square | polygraphic | {
"key1": "WISDOM",
"key2": "COURAGE"
} | advanced | en | 10 | 10 | cipher_museum | 2.0 | public | null | null |
two-square-v2-0063 | HMTDKHUMEMZBFAHEZKTAFADEUGCHPWEHNPONCXUMMLDERYHOPZLUHBPMPZCUUFALCMMEPEQKUF | HMTDKHUMEMZBFAHEZKTAFADEUGCHPWEHNPONCXUMMLDERYHOPZLUHBPMPZCUUFALCMMEPEQKUF | FOR GOD SO LOVED THE WORLD THAT HE GAVE HIS ONLY SON THAT WHOEVER BELIEVES SHALL NOT PERISH | two_square | two_square | polygraphic | {
"key1": "PALACE",
"key2": "BATTLE"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
one-time-pad-v3-0134 | YJQPUCAQBCIFJNYTHOYCXPYJAYOARUBQGGPTGAQSOUPKDSEGLVRQDKJJVMNAYCEOZJRS | YJQPUCAQBCIFJNYTHOYCXPYJAYOARUBQGGPTGAQSOUPKDSEGLVRQDKJJVMNAYCEOZJRS | IN MY BEGINNING IS MY END AND IN MY END IS MY BEGINNING AS THE QUEEN OF SCOTS KNEW WELL | one_time_pad | one_time_pad | stream | {
"type": "pad",
"value": "QWERTY (repeating)"
} | expert | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
adfgvx-v2-0129 | AAFFXAXFDFGAGDGAAAVAAA | AAFFXAXFDFGAGDGAAAVAAA | HOLD THE LINE | adfgvx | adfgvx | fractionation | {
"polybius": "LIBERTY",
"columnar": "FREEDOM"
} | advanced | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
hill-v3-0347 | DMKCJYDTTJRCAH | DMKCJYDTTJRCAH | THE APPLE FALLS | hill | hill | polygraphic | {
"a": 9,
"b": 2,
"c": 7,
"d": 5
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0012814 | 20 8 5 2 9 6 9 4 3 9 16 8 5 18 3 15 13 2 9 14 5 19 1 16 15 12 25 2 9 21 19 19 17 21 1 18 5 23 9 20 8 20 18 1 14 19 16 15 19 9 20 9 15 14 3 12 1 19 19 9 3 1 12 3 9 16 8 5 18 19 20 5 1 3 8 23 8 25 13 15 4 5 18 14 19 5 3 21 18 9 20 25 13 1 20 20 5 18 19 4 9 7 18 1 16 8 1 14 4 20 18 9 7 18 1 16 8 6 18 5 17 21 5 14 3 9 5 19... | 20 8 5 2 9 6 9 4 3 9 16 8 5 18 3 15 13 2 9 14 5 19 1 16 15 12 25 2 9 21 19 19 17 21 1 18 5 23 9 20 8 20 18 1 14 19 16 15 19 9 20 9 15 14 3 12 1 19 19 9 3 1 12 3 9 16 8 5 18 19 20 5 1 3 8 23 8 25 13 15 4 5 18 14 19 5 3 21 18 9 20 25 13 1 20 20 5 18 19 4 9 7 18 1 16 8 1 14 4 20 18 9 7 18 1 16 8 6 18 5 17 21 5 14 3 9 5 19... | THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 216 | 216 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
cda-0013500 | 20.2.5 11.1.1 8.5.8 2.3.10 3.5.10 6.6.9 14.1.5 5.5.6 4.5.7 6.6.7 8.2.6 6.2.2 3.4.4 20.3.9 8.5.9 2.6.6 14.6.3 6.3.10 3.1.1 8.2.6 3.1.9 6.5.5 5.3.4 7.1.9 12.5.1 9.6.7 15.5.1 4.2.10 18.1.5 1.1.5 5.4.8 1.5.2 11.1.1 19.3.6 16.2.4 20.1.9 4.1.5 6.1.6 4.5.10 4.2.9 13.5.7 7.4.7 5.3.8 8.3.6 16.5.8 12.4.8 1.2.2 10.2.10 1.4.4 8.3.... | 20.2.5 11.1.1 8.5.8 2.3.10 3.5.10 6.6.9 14.1.5 5.5.6 4.5.7 6.6.7 8.2.6 6.2.2 3.4.4 20.3.9 8.5.9 2.6.6 14.6.3 6.3.10 3.1.1 8.2.6 3.1.9 6.5.5 5.3.4 7.1.9 12.5.1 9.6.7 15.5.1 4.2.10 18.1.5 1.1.5 5.4.8 1.5.2 11.1.1 19.3.6 16.2.4 20.1.9 4.1.5 6.1.6 4.5.10 4.2.9 13.5.7 7.4.7 5.3.8 8.3.6 16.5.8 12.4.8 1.2.2 10.2.10 1.4.4 8.3.... | THE MESSAGE WAS HIDDEN BUT NOT SECURE INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION THE INDEX OF COINCIDENCE IS A USEFUL CLUE PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH SLOWLY | arnold_andre | arnold_andre | null | {} | hard | en | 168 | 168 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
bazeries-v3-0016 | TCVOSQKQPOHSWTCPH | TCVOSQKQPOHSWTCPH | ARCHERS TO THE WALLS | bazeries | bazeries | transposition | {
"type": "integer",
"value": 17
} | advanced | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
cda-0018745 | 77 69 11 82 80 29 82 29 52 80 43 65 66 50 69 29 50 61 29 69 66 20 80 69 55 82 29 20 43 57 82 66 66 82 80 76 80 82 72 59 82 29 52 43 69 65 82 29 61 69 59 80 52 82 66 69 69 57 61 68 57 57 69 89 50 29 11 82 65 82 29 11 82 29 66 95 82 80 50 76 50 52 68 66 50 69 29 68 66 20 68 61 36 82 29 52 69 11 82 61 20 43 80 82 95 82 80... | 77 69 11 82 80 29 82 29 52 80 43 65 66 50 69 29 50 61 29 69 66 20 80 69 55 82 29 20 43 57 82 66 66 82 80 76 80 82 72 59 82 29 52 43 69 65 82 29 61 69 59 80 52 82 66 69 69 57 61 68 57 57 69 89 50 29 11 82 65 82 29 11 82 29 66 95 82 80 50 76 50 52 68 66 50 69 29 68 66 20 68 61 36 82 29 52 69 11 82 61 20 43 80 82 95 82 80... | MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION ATBASH ENCODES BY REVERSING THE ALPHABET THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN | wallis_cipher | wallis_cipher | null | {} | hard | en | 166 | 166 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
cda-0014734 | 55 82 80 52 55 36 69 76 76 61 65 80 50 29 52 50 65 57 82 61 68 43 61 66 36 82 61 43 61 66 82 77 77 59 61 66 20 82 61 82 52 59 80 82 82 95 82 29 50 76 82 29 82 77 43 55 29 69 89 61 68 57 25 69 80 50 66 36 77 66 36 82 95 50 25 82 29 82 80 82 52 50 65 36 82 80 59 61 82 61 68 80 82 65 82 68 66 50 29 25 55 82 43 89 69 80 11 | 55 82 80 52 55 36 69 76 76 61 65 80 50 29 52 50 65 57 82 61 68 43 61 66 36 82 61 43 61 66 82 77 77 59 61 66 20 82 61 82 52 59 80 82 82 95 82 29 50 76 82 29 82 77 43 55 29 69 89 61 68 57 25 69 80 50 66 36 77 66 36 82 95 50 25 82 29 82 80 82 52 50 65 36 82 80 59 61 82 61 68 80 82 65 82 68 66 50 29 25 55 82 43 89 69 80 11 | KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM THE VIGENERE CIPHER USES A REPEATING KEYWORD | wallis_cipher | wallis_cipher | null | {} | hard | en | 107 | 107 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
cda-0020660 | BAAAB AABAA AAABA BAABB BAAAA ABAAA BAABA BABBA AAABA ABABA AAAAA ABAAA ABABB BAAAB BAAAB AABBB ABBAB BAABB ABABA AAABB AAAAB AABAA BAABA AABAA BAAAB BAABA AABAA AAABB BAABB ABBAA AAABB AABAA BAAAA BAAAB AAABA BAAAA BAABB BAABA ABAAA ABBAA BABBA AABBB ABAAA ABABA ABABA AAABA ABAAA ABBBA AABBB AABAA BAAAA BAABB BAAAB AA... | BAAAB AABAA AAABA BAABB BAAAA ABAAA BAABA BABBA AAABA ABABA AAAAA ABAAA ABABB BAAAB BAAAB AABBB ABBAB BAABB ABABA AAABB AAAAB AABAA BAABA AABAA BAAAB BAABA AABAA AAABB BAABB ABBAA AAABB AABAA BAAAA BAAAB AAABA BAAAA BAABB BAABA ABAAA ABBAA BABBA AABBB ABAAA ABABA ABABA AAABA ABAAA ABBBA AABBB AABAA BAAAA BAABB BAAAB AA... | SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS ATBASH ENCODES BY REVERSING THE ALPHABET PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION | bacon_cipher | bacon_cipher | null | {} | hard | en | 870 | 870 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
voynich-render-v2-0082 | gcixd jci yorrig qdldladq gcd noxg oqd yiredlrde gi qdndog kg ox nckfixincdq xorgouoro iaxdqvde | gcixd jci yorrig qdldladq gcd noxg oqd yiredlrde gi qdndog kg ox nckfixincdq xorgouoro iaxdqvde | THOSE WHO CANNOT REMEMBER THE PAST ARE CONDEMNED TO REPEAT IT AS PHILOSOPHER SANTAYANA OBSERVED | voynich_render | voynich_render | substitution | {
"type": "none",
"value": null
} | expert | en | 81 | 95 | cipher_museum | 2.0 | public | null | null |
m209-098 | JYCNYNQLJJRZQGAWCJYXDIXEBYRWLZCNRFYFCYVZNEMYZ | JYCNYNQLJJRZQGAWCJYXDIXEBYRWLZCNRFYFCYVZNEMYZ | THE REPORTS OF MY DEATH HAVE BEEN GREATLY EXAGGERATED | m209 | m209 | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 45 | 45 | cipher_museum | 0.2 | public | null | null |
cda-0015288 | 14.26.14 18.46.14 14.25.11 13.27.14 6.36.15 10.47.1 3.23.15 2.41.13 19.8.8 12.4.6 16.20.14 13.8.3 12.10.5 19.13.3 2.33.2 4.23.3 16.33.2 20.37.3 3.10.11 19.15.9 20.27.12 18.17.10 1.36.2 8.4.5 8.29.2 11.39.8 10.45.13 9.17.14 2.50.4 8.38.7 6.15.15 8.39.7 4.20.12 5.5.4 17.26.9 17.20.11 11.1.6 10.10.15 17.19.4 3.10.11 10.13... | 14.26.14 18.46.14 14.25.11 13.27.14 6.36.15 10.47.1 3.23.15 2.41.13 19.8.8 12.4.6 16.20.14 13.8.3 12.10.5 19.13.3 2.33.2 4.23.3 16.33.2 20.37.3 3.10.11 19.15.9 20.27.12 18.17.10 1.36.2 8.4.5 8.29.2 11.39.8 10.45.13 9.17.14 2.50.4 8.38.7 6.15.15 8.39.7 4.20.12 5.5.4 17.26.9 17.20.11 11.1.6 10.10.15 17.19.4 3.10.11 10.13... | PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION | book_cipher | book_cipher | null | {} | hard | en | 181 | 181 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
vigenere-v2-1776 | FZAMUDUTTKIYESBJPYP | FZAMUDUTTKIYESBJPYP | MISSION ACCOMPLISHED | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "TRIUMPH"
} | intermediate | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
typex-189 | UJLFBKDKBHQVIYVLSRXPY | UJLFBKDKBHQVIYVLSRXPY | SUPPLY LINE COMPROMISED | typex | typex | machine | {
"type": "keyword",
"value": "SECRET"
} | expert | en | 21 | 21 | cipher_museum | 0.2 | public | null | null |
trithemius-v2-0016 | CPXHV RE YMCBPMG | CPXHV RE YMCBPMG | COVER MY RETREAT | trithemius | trithemius | polyalphabetic | {
"type": "none",
"value": null
} | beginner | en | 14 | 16 | cipher_museum | 2.0 | public | null | null |
bifid-v3-0363 | SRERPHFFSLHKPKIEMAEGQTFXQLRFTPSFSFSFFORDPHYKWBTKRYEGSTGNSGNTRKLRQSLBSUPNPIISOCIB | SRERPHFFSLHKPKIEMAEGQTFXQLRFTPSFSFSFFORDPHYKWBTKRYEGSTGNSGNTRKLRQSLBSUPNPIISOCIB | THE MOLE BURIED DEEP IN THE INTELLIGENCE AGENCY PASSED VITAL SECRETS TO THE OTHER SIDE FOR YEARS | bifid | bifid | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
typex-v2-0302 | DVAVMQMBJPBGYQKTULQNWDROSSVRFHEFIXVDKZMCUGCZXWPJLJECLQXBUPSOSLYGZHMKIUWFFT | DVAVMQMBJPBGYQKTULQNWDROSSVRFHEFIXVDKZMCUGCZXWPJLJECLQXBUPSOSLYGZHMKIUWFFT | GOOD NIGHT GOOD NIGHT PARTING IS SUCH SWEET SORROW THAT I SHALL SAY GOOD NIGHT TILL MORROW | typex | typex | machine | {
"type": "keyword",
"value": "EMPIRE"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
bifid-v3-0520 | LERSDTBOLUVAVEHREXEZ | LERSDTBOLUVAVEHREXEZ | STEAM POWER TRANSFORMS | bifid | bifid | fractionation | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
porta-v2-0195 | GLVRDGFATNXYLOTYKZEXOCDHNVPNRCIMSZCXQFNWXTMSBTTEHFMRLNPFJTDDWRAAHMTFSRKOUBLS | GLVRDGFATNXYLOTYKZEXOCDHNVPNRCIMSZCXQFNWXTMSBTTEHFMRLNPFJTDDWRAAHMTFSRKOUBLS | ONCE UPON A MIDNIGHT DREARY WHILE I PONDERED WEAK AND WEARY OVER MANY A QUAINT VOLUME OF LORE | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "RENAISSANCE"
} | intermediate | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
chaocipher-v2-0263 | ASJBIRKJXLNOOO | ASJBIRKJXLNOOO | TARGET ACQUIRED | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
alberti-disk-178 | VKRDPJXWLQDQPCWKSPPRUDVPFZDYEUIZPHTVARATPZAUZGMVFJTJWCDUSJNSWEIXERKLUEECLMGTMNTFJPMFAEPUBITHCPPOSYYCQIYIZJDKJFBXAJSBQVOKSFMRUPHLCCGAMUMBE | VKRDPJXWLQDQPCWKSPPRUDVPFZDYEUIZPHTVARATPZAUZGMVFJTJWCDUSJNSWEIXERKLUEECLMGTMNTFJPMFAEPUBITHCPPOSYYCQIYIZJDKJFBXAJSBQVOKSFMRUPHLCCGAMUMBE | WHETHER THEREFORE YE EAT OR DRINK OR WHATSOEVER YE DO DO ALL TO THE GLORY OF GOD FOR THE EARTH IS THE LORDS AND THE FULLNESS THEREOF THE WORLD AND THEY THAT DWELL THEREIN | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 13
} | expert | en | 137 | 137 | cipher_museum | 0.2 | public | null | null |
cda-0013675 | 25 88 22 91 3 59 60 94 33 40 93 32 50 21 93 63 88 48 34 2 64 79 82 99 21 48 11 68 88 48 82 30 63 17 82 67 22 68 67 41 45 81 23 63 45 11 66 60 66 26 15 48 2 87 17 30 48 60 25 48 34 23 79 33 58 41 11 92 11 91 22 4 81 48 48 64 11 82 99 17 76 99 23 43 91 91 94 3 23 2 91 40 45 52 22 30 76 63 48 99 50 45 14 58 87 48 60 26 45... | 25 88 22 91 3 59 60 94 33 40 93 32 50 21 93 63 88 48 34 2 64 79 82 99 21 48 11 68 88 48 82 30 63 17 82 67 22 68 67 41 45 81 23 63 45 11 66 60 66 26 15 48 2 87 17 30 48 60 25 48 34 23 79 33 58 41 11 92 11 91 22 4 81 48 48 64 11 82 99 17 76 99 23 43 91 91 94 3 23 2 91 40 45 52 22 30 76 63 48 99 50 45 14 58 87 48 60 26 45... | THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER EVERY SYSTEM NEEDS AN HONEST THREAT MODEL OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT | homophonic | homophonic | null | {} | hard | en | 193 | 193 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
cda-0007178 | LLGXVXXJXLZXWVNLDIKIUWBIJCSUXJFEWNEPWEKOLKQZYCERIZKPTIEALIOFPFAHIZOKOCQTWKYSWAHFZRGVWTZNVKITUTGPGEDIYNXVQJLSTMUMIKRWWWWFBDDIUQBWPVU | LLGXVXXJXLZXWVNLDIKIUWBIJCSUXJFEWNEPWEKOLKQZYCERIZKPTIEALIOFPFAHIZOKOCQTWKYSWAHFZRGVWTZNVKITUTGPGEDIYNXVQJLSTMUMIKRWWWWFBDDIUQBWPVU | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS A TRANSPARENT TOOL SHOULD SHOW ITS REASONING DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS | autokey | autokey | null | {
"primer": "SECURE"
} | hard | en | 131 | 131 | synthetic_educational | null | null | [] | |
fialka-v3-0186 | XNLUBDYLPPNHZYXXHRZIJIFDCAJHBLFZFMDLABSFDJKYFGXBGHKQPKANFSPXSHOAEPHCIZEYZELHDZBMMQJMK | XNLUBDYLPPNHZYXXHRZIJIFDCAJHBLFZFMDLABSFDJKYFGXBGHKQPKANFSPXSHOAEPHCIZEYZELHDZBMMQJMK | CONGRESS SHALL MAKE NO LAW RESPECTING AN ESTABLISHMENT OF RELIGION OR PROHIBITING THE FREE EXERCISE | fialka | fialka | machine | {
"type": "seed",
"value": "KREMLIN"
} | expert | en | 85 | 85 | cipher_museum | 2.0 | public | null | null |
cda-0021913 | LYHVIEZYOV VERWVMXV XLNVH YVULIV XLMURWVMXV GSV YRURW XRKSVI XLNYRMVH Z KLOBYRFH HJFZIV DRGS GIZMHKLHRGRLM | LYHVIEZYOV VERWVMXV XLNVH YVULIV XLMURWVMXV GSV YRURW XRKSVI XLNYRMVH Z KLOBYRFH HJFZIV DRGS GIZMHKLHRGRLM | OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION | atbash | atbash | null | {} | hard | en | 93 | 93 | synthetic_educational | null | null | [
"self_inverse_check",
"frequency_analysis"
] | Atbash maps A↔Z, B↔Y, … and is its own inverse. |
cda-0003719 | TIG YMLKUMAO NUCVTH LKXM V NBNDAUKQK PKFEXBO FUS BUJKTAZ SXQ GIEFHR GAA VXD DQPIGU | TIG YMLKUMAO NUCVTH LKXM V NBNDAUKQK PKFEXBO FUS BUJKTAZ SXQ GIEFHR GAA VXD DQPIGU | THE VIGENERE CIPHER USES A REPEATING KEYWORD THE MESSAGE WAS HIDDEN BUT NOT SECURE | trithemius | trithemius | null | {} | medium | en | 69 | 69 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
joseon-yeokhak-v3-0323 | SNWESJASYJSLASHDWFS | SNWESJASYJSLASHDWFS | AVE MARIA GRATIA PLENA | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "DYNASTY"
} | beginner | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-v2-0318 | WWABHO5LUXDHFCUSMWQJIEVCMODEIXKBVG6G7IEONGI7SPHNKB7BXEKLL24KOKEXFJHH76WRJHLDK | WWABHO5LUXDHFCUSMWQJIEVCMODEIXKBVG6G7IEONGI7SPHNKB7BXEKLL24KOKEXFJHH76WRJHLDK | THE FEAR OF THE LORD IS THE BEGINNING OF WISDOM AND KNOWLEDGE OF THE HOLY ONE IS UNDERSTANDING | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "FREEDOM"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
vernam-v2-0036 | LJDHVYEVZMOLFU | LJDHVYEVZMOLFU | LIBERTY OR DEATH | vernam | vernam | stream | {
"type": "pad",
"value": "ABCDEFGH (repeating)"
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0012945 | 858 821 814 999 833 826 804 853 802 851 874 999 847 852 813 854 813 853 864 813 854 999 831 840 842 867 833 814 810 818 812 999 815 844 852 999 857 822 814 999 806 842 836 836 862 839 826 857 872 999 800 999 837 842 810 814 835 999 806 802 841 999 807 833 801 855 856 826 817 874 999 845 802 857 859 814 852 840 855 999 ... | 858 821 814 999 833 826 804 853 802 851 874 999 847 852 813 854 813 853 864 813 854 999 831 840 842 867 833 814 810 818 812 999 815 844 852 999 857 822 814 999 806 842 836 836 862 839 826 857 872 999 800 999 837 842 810 814 835 999 806 802 841 999 807 833 801 855 856 826 817 874 999 845 802 857 859 814 852 840 855 999 ... | THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH HONESTLY | culper_ring | culper_ring | null | {} | hard | en | 202 | 202 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
beaufort-063 | IXWQFIGPUEIJFBOPY | IXWQFIGPUEIJFBOPY | THE EAGLE HAS LANDED | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "BEAUFORT"
} | intermediate | en | 17 | 17 | cipher_museum | 0.2 | public | null | null |
nomenclator-v3-0077 | 20 18 01 04 05 03 18 01 06 20 09 19 60 01 18 20 62 03 15 14 04 21 03 20 09 14 07 03 15 22 05 18 20 15 16 05 18 01 20 09 15 14 19 23 09 20 08 15 21 20 01 12 05 18 20 09 14 07 60 15 16 16 15 19 09 20 09 15 14 63 25 15 21 18 16 18 05 19 05 14 03 05 | 20 18 01 04 05 03 18 01 06 20 09 19 60 01 18 20 62 03 15 14 04 21 03 20 09 14 07 03 15 22 05 18 20 15 16 05 18 01 20 09 15 14 19 23 09 20 08 15 21 20 01 12 05 18 20 09 14 07 60 15 16 16 15 19 09 20 09 15 14 63 25 15 21 18 16 18 05 19 05 14 03 05 | TRADECRAFT IS THE ART OF CONDUCTING COVERT OPERATIONS WITHOUT ALERTING THE OPPOSITION TO YOUR PRESENCE | nomenclator | nomenclator | nomenclator | {
"type": "none",
"value": null
} | expert | en | 164 | 245 | cipher_museum | 2.0 | public | null | null |
wallis-cipher-v2-0100 | 90 60 81 91 90 26 33 82 87 91 90 56 24 91 90 43 49 54 34 42 91 90 86 91 90 52 89 24 91 90 43 25 56 85 42 24 91 90 43 49 54 34 89 24 91 90 43 42 85 91 90 14 81 63 87 91 90 55 89 21 42 24 91 90 60 89 43 91 90 64 25 56 91 90 79 28 26 54 34 91 90 59 81 12 42 91 90 56 52 91 90 37 33 54 60 89 91 90 56 10 54 53 85 42 91 | 90 60 81 91 90 26 33 82 87 91 90 56 24 91 90 43 49 54 34 42 91 90 86 91 90 52 89 24 91 90 43 25 56 85 42 24 91 90 43 49 54 34 89 24 91 90 43 42 85 91 90 14 81 63 87 91 90 55 89 21 42 24 91 90 60 89 43 91 90 64 25 56 91 90 79 28 26 54 34 91 90 59 81 12 42 91 90 56 52 91 90 37 33 54 60 89 91 90 56 10 54 53 85 42 91 | LA VIDA ES SUENO Y LOS SUENOS SUENOS SON PARA TODOS LOS QUE VIVEN BAJO EL CIELO ETERNO | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "OXFORD"
} | expert | en | 210 | 314 | cipher_museum | 2.0 | public | null | null |
geez-monastic-216 | SDDKOEBGPDCZSZKSMESYCSDDKOEHEYSYCBGHEYHEPEDJTDSJEPZ | SDDKOEBGPDCZSZKSMESYCSDDKOEHEYSYCBGHEYHEPEDJTDSJEPZ | ALL THE WORLDS A STAGE AND ALL THE MEN AND WOMEN MERELY PLAYERS | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 51 | 51 | cipher_museum | 0.2 | public | null | null |
fialka-v3-0230 | ZABAVQFQMXHGMBXPDU | ZABAVQFQMXHGMBXPDU | DEAD MEN TELL NO TALES | fialka | fialka | machine | {
"type": "seed",
"value": "SOVIET"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
bazeries-v2-0736 | SLYGYVLYTLHDYIFPGMDSYGHLPFFHXDAOSXAGSNMMGHGYYIDDYOJWLXVGAMPTJJSYNOXTYQHLTLYNJACMA | SLYGYVLYTLHDYIFPGMDSYGHLPFFHXDAOSXAGSNMMGHGYYIDDYOJWLXVGAMPTJJSYNOXTYQHLTLYNJACMA | GENERAL ORDERS NUMBER ONE ALL COMMUNICATIONS SHALL BE ENCRYPTED USING THE APPROVED CIPHER DISK | bazeries | bazeries | transposition | {
"type": "integer",
"value": 67
} | advanced | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
nomenclator-v3-0295 | 60 05 14 09 07 13 01 13 01 03 08 09 14 05 08 01 04 01 14 01 19 20 18 15 14 15 13 09 03 01 12 14 21 13 02 05 18 62 16 15 19 19 09 02 12 05 19 05 20 20 09 14 07 19 13 01 11 09 14 07 09 20 19 05 05 13 21 14 02 18 05 01 11 01 02 12 05 | 60 05 14 09 07 13 01 13 01 03 08 09 14 05 08 01 04 01 14 01 19 20 18 15 14 15 13 09 03 01 12 14 21 13 02 05 18 62 16 15 19 19 09 02 12 05 19 05 20 20 09 14 07 19 13 01 11 09 14 07 09 20 19 05 05 13 21 14 02 18 05 01 11 01 02 12 05 | THE ENIGMA MACHINE HAD AN ASTRONOMICAL NUMBER OF POSSIBLE SETTINGS MAKING IT SEEM UNBREAKABLE | nomenclator | nomenclator | nomenclator | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 154 | 230 | cipher_museum | 2.0 | public | null | null |
cda-0021369 | 20 8 5 13 5 19 19 1 7 5 23 1 19 8 9 4 4 5 14 2 21 20 14 15 20 19 5 3 21 18 5 6 18 5 17 21 5 14 3 25 1 14 1 12 25 19 9 19 3 1 14 18 5 22 5 1 12 23 5 1 11 3 9 16 8 5 18 19 | 20 8 5 13 5 19 19 1 7 5 23 1 19 8 9 4 4 5 14 2 21 20 14 15 20 19 5 3 21 18 5 6 18 5 17 21 5 14 3 25 1 14 1 12 25 19 9 19 3 1 14 18 5 22 5 1 12 23 5 1 11 3 9 16 8 5 18 19 | THE MESSAGE WAS HIDDEN BUT NOT SECURE FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | aeneas_tacticus | aeneas_tacticus | null | {} | medium | en | 68 | 68 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
playfair-v2-0489 | LHRZPLXTDKEV | LHRZPLXTDKEV | KNOW THYSELF | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
cda-0020768 | PUBLX CINFR ASTRX CTURE DESER VESCA REFUL DESIG NGRON SFELD USESX DIGIX SEQUE NCEAX THERZ PEATI NGKEY CRYPT OGRAP HYREW ARDSZ ATIEZ CEAND CAREF ULTHZ NKING | PUBLX CINFR ASTRX CTURE DESER VESCA REFUL DESIG NGRON SFELD USESX DIGIX SEQUE NCEAX THERZ PEATI NGKEY CRYPT OGRAP HYREW ARDSZ ATIEZ CEAND CAREF ULTHZ NKING | PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING | commercial_code | commercial_code | null | {} | hard | en | 130 | 130 | 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-0021866 | CAESA RSHIX TEDTH EALPH ABETB YTHRE EPOSI TIONS BEAUZ ORTIX THERZ CIPRO CALOF VIGEN EREAN DDECR YPTSI TSELF THEBE STLEZ SONSS HOWWH ERETX EMETH ODFAI LSBEB | CAESA RSHIX TEDTH EALPH ABETB YTHRE EPOSI TIONS BEAUZ ORTIX THERZ CIPRO CALOF VIGEN EREAN DDECR YPTSI TSELF THEBE STLEZ SONSS HOWWH ERETX EMETH ODFAI LSBEB | CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF THE BEST LESSONS SHOW WHERE THE METHOD FAILS | commercial_code | commercial_code | null | {} | hard | en | 130 | 130 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
kama-sutra-v3-0224 | WGUQTGF EK EQT AWMMF | WGUQTGF EK EQT AWMMF | ARCHERS TO THE WALLS | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "INDIA"
} | intermediate | en | 17 | 20 | cipher_museum | 2.0 | public | null | null |
enigma-194 | RARANPFYJFQVOWYC | RARANPFYJFQVOWYC | ALL IS LOST RETREAT | enigma | enigma | machine | {
"type": "rotor_start",
"value": "RMS"
} | expert | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
jn25-v2-0231 | 09908 09996 09993 09906 09993 09995 09997 09901 09993 09902 09908 09911 09997 09900 09900 09996 09903 09900 09992 09997 09908 09907 09904 09903 09907 09997 09908 09997 09903 09902 09919 09902 09908 09997 09900 09906 09993 09997 09902 09994 09903 09906 09991 09993 09901 09993 09902 09908 09907 09999 09906 09906 09997 09... | 09908 09996 09993 09906 09993 09995 09997 09901 09993 09902 09908 09911 09997 09900 09900 09996 09903 09900 09992 09997 09908 09907 09904 09903 09907 09997 09908 09997 09903 09902 09919 09902 09908 09997 09900 09906 09993 09997 09902 09994 09903 09906 09991 09993 09901 09993 09902 09908 09907 09999 09906 09906 09997 09... | THE REGIMENT WILL HOLD ITS POSITION UNTIL REINFORCEMENTS ARRIVE FROM THE EASTERN COMMAND POST HERE | jn25 | jn25 | codebook | {
"type": "additive",
"value": "99999"
} | expert | en | 420 | 503 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-320 | YALRRUTHSPPECGROY | YALRRUTHSPPECGROY | CRYPTOGRAPHY RULES | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "SECRET"
} | intermediate | en | 17 | 17 | cipher_museum | 0.2 | public | null | null |
cda-0005329 | DTNH IWJE QJNL OFON RYAA ERSE OQXN HWRY ELYF SLAI CZON PJTH NFHN UPHJ LPPJ THNF GZNQ DJJW RAID LSZA RPAN JYAT TVQL MPHQ AMLW YYEX Z | DTNH IWJE QJNL OFON RYAA ERSE OQXN HWRY ELYF SLAI CZON PJTH NFHN UPHJ LPPJ THNF GZNQ DJJW RAID LSZA RPAN JYAT TVQL MPHQ AMLW YYEX Z | THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS | beaufort | beaufort | null | {
"key": "WARRIOR"
} | hard | en | 105 | 105 | synthetic_educational | null | null | [
"kasiski_examination",
"friedman_test",
"index_of_coincidence"
] | Beaufort: E(x)=k-x mod 26 — reciprocal cipher (decryption identical to encryption). |
kryptos-057 | IOLCOFDHFPICSRSOAEINLRFFHHQIAOGGBDDHFITIFDTBBPOJXAJUMWMHEGATIKFTICAJSEMOJHDJQOQATIIJEBFKICGKFLVGSLAAGGHJYOOLBWCETICAGFRSFHBOYQIDJAMJBGBXHBNLLBBAJKWLNGDDKAE | IOLCOFDHFPICSRSOAEINLRFFHHQIAOGGBDDHFITIFDTBBPOJXAJUMWMHEGATIKFTICAJSEMOJHDJQOQATIIJEBFKICGKFLVGSLAAGGHJYOOLBWCETICAGFRSFHBOYQIDJAMJBGBXHBNLLBBAJKWLNGDDKAE | IT IS RATHER FOR US TO BE HERE DEDICATED TO THE GREAT TASK REMAINING BEFORE US THAT FROM THESE HONORED DEAD WE TAKE INCREASED DEVOTION TO THAT CAUSE FOR WHICH THEY GAVE THE LAST FULL MEASURE | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "KRYPTOS"
} | advanced | en | 155 | 155 | cipher_museum | 0.2 | public | null | null |
jefferson-disk-v3-0196 | PMVYVHFUSHZOQYPMBI | PMVYVHFUSHZOQYPMBI | LOWER THE DRAWBRIDGE | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "1,3,5,2,4,6"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
vigenere-v3-1535 | LZOHMAZBEBYXAPZVVWQDYLZOCZIPGMWFHTZBEBYDRLIKQIZPUWRVUXNZBJWZQALVKZIZXJVFUGGCPVRBCACZ | LZOHMAZBEBYXAPZVVWQDYLZOCZIPGMWFHTZBEBYDRLIKQIZPUWRVUXNZBJWZQALVKZIZXJVFUGGCPVRBCACZ | SIGNALS INTELLIGENCE OR SIGINT INVOLVES INTERCEPTION AND ANALYSIS OF ELECTRONIC COMMUNICATIONS | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "TRIUMPH"
} | intermediate | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
adfgvx-092 | VXDXDFGAVVFDAAAFAFAAFAFAAGFDADGDVFAXVVGDAGFDVAAGAGGFVAAFADGFGVGXFVVFGGAAVDAGAAGVAAGFADFFGA | VXDXDFGAVVFDAAAFAFAAFAFAAGFDADGDVFAXVVGDAGFDVAAGAGGFVAAFADGFGVGXFVVFGGAAVDAGAAGVAAGFADFFGA | NEVER INTERRUPT YOUR ENEMY WHEN HE IS MAKING A MISTAKE | adfgvx | adfgvx | fractionation | {
"polybius": "CIPHER",
"columnar": "MUSEUM"
} | advanced | en | 90 | 90 | cipher_museum | 0.2 | public | null | null |
cda-0019430 | POLY XLPH ABET ICCI PHER SUSE XULT IZLE ALZH ABET SHIF TSAB BC | POLY XLPH ABET ICCI PHER SUSE XULT IZLE ALZH ABET SHIF TSAB BC | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS | commercial_code | commercial_code | null | {} | medium | en | 50 | 50 | 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-0021527 | 7.4.2 15.2.2 20.1.2 18.6.1 19.4.3 4.6.4 11.1.4 8.3.4 9.3.6 9.5.4 17.4.9 20.1.5 1.4.8 9.3.3 16.6.4 6.1.1 10.4.2 7.6.10 8.3.4 14.1.6 11.6.2 15.1.2 11.6.5 6.1.7 19.4.7 17.3.1 1.2.2 17.1.9 8.4.6 7.2.8 2.6.5 15.2.1 3.2.8 11.3.10 14.5.3 2.2.8 19.5.10 16.2.3 16.5.10 6.4.9 9.4.2 9.4.7 18.1.9 2.2.10 20.3.9 19.6.3 8.2.10 17.1.3 ... | 7.4.2 15.2.2 20.1.2 18.6.1 19.4.3 4.6.4 11.1.4 8.3.4 9.3.6 9.5.4 17.4.9 20.1.5 1.4.8 9.3.3 16.6.4 6.1.1 10.4.2 7.6.10 8.3.4 14.1.6 11.6.2 15.1.2 11.6.5 6.1.7 19.4.7 17.3.1 1.2.2 17.1.9 8.4.6 7.2.8 2.6.5 15.2.1 3.2.8 11.3.10 14.5.3 2.2.8 19.5.10 16.2.3 16.5.10 6.4.9 9.4.2 9.4.7 18.1.9 2.2.10 20.3.9 19.6.3 8.2.10 17.1.3 ... | THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER THE VIGENERE CIPHER USES A REPEATING KEYWORD TOMORROW | arnold_andre | arnold_andre | null | {} | hard | en | 203 | 203 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
sigaba-v2-0500 | BFCMXIFMRHWPJWTPHVXDDKUREOGTOYLEZMRHMBQCJTQTXKWARQUGNEZBKVARTMKNASYYCFGNJQDUWZJIESBVAMUIDSAZSAMVURBHDWXDNXXRIXRGSXPCXKOWYUEIWWRUUUGWGGQIFEWPXRORWXZXBER | BFCMXIFMRHWPJWTPHVXDDKUREOGTOYLEZMRHMBQCJTQTXKWARQUGNEZBKVARTMKNASYYCFGNJQDUWZJIESBVAMUIDSAZSAMVURBHDWXDNXXRIXRGSXPCXKOWYUEIWWRUUUGWGGQIFEWPXRORWXZXBER | 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 | sigaba | sigaba | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 151 | 151 | cipher_museum | 2.0 | public | null | null |
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