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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
columnar-transposition-v2-0467 | HGTSQIWVFWHMANANEBUENSIBPSANENDCINETTSUZAERAAEBOOIEASRALMILSTETCBINTTNOAELHOYSGI | HGTSQIWVFWHMANANEBUENSIBPSANENDCINETTSUZAERAAEBOOIEASRALMILSTETCBINTTNOAELHOYSGI | THE BABINGTON PLOT TO ASSASSINATE QUEEN ELIZABETH WAS UNCOVERED BY FRANCIS WALSINGHAM IN TIME | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "WARRIOR"
} | intermediate | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
enigma-v3-0160 | UDDEYRDPYMFZOZMDZNRVPAZZVXRBRQCEXSDSZDKVRVALZSQBAKGMYMJQRJTROFPTLDBVZNPNFRARDU | UDDEYRDPYMFZOZMDZNRVPAZZVXRBRQCEXSDSZDKVRVALZSQBAKGMYMJQRJTROFPTLDBVZNPNFRARDU | GENIUS IS ONE PERCENT INSPIRATION AND NINETY NINE PERCENT PERSPIRATION THOMAS EDISON NOTED | enigma | enigma | machine | {
"type": "rotor_start",
"value": "DEF"
} | expert | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
caesar-v2-1335 | JXU HUWYCUDJ IXQBB QTLQDSU QJ VYHIJ BYWXJ IKFFEHJUT RO QHJYBBUHO ED JXU UQIJUHD VBQDA JETQO | JXU HUWYCUDJ IXQBB QTLQDSU QJ VYHIJ BYWXJ IKFFEHJUT RO QHJYBBUHO ED JXU UQIJUHD VBQDA JETQO | THE REGIMENT SHALL ADVANCE AT FIRST LIGHT SUPPORTED BY ARTILLERY ON THE EASTERN FLANK TODAY | caesar | caesar | substitution | {
"type": "shift",
"value": 16
} | beginner | en | 77 | 91 | cipher_museum | 2.0 | public | null | null |
great-cipher-v2-0274 | 118 125 166 125 126 180 118 117 154 127 164 130 | 118 125 166 125 126 180 118 117 154 127 164 130 | DIVIDE AND CONQUER | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "FRANCE"
} | expert | en | 36 | 47 | cipher_museum | 2.0 | public | null | null |
cda-0012139 | ┌· ┘· X· K L r Γ· ┐· r· L ┌· X ┌· L ⌐ Γ ⌐ ¬· ┌· Γ· Γ Γ· ─ ⌐ ┐· ┌· L X r ┌· Γ· ¬ L Γ ¬· L ┘· ┌ L K ┌· Γ· r ┐· ⌐ K K L ┌· ─ K r· L ¬ L X K └ L X X ┘· ─ X X r· ┘· ⌒ ⌒ r· L ┌· L K r· L ┌ L K r· ┘· Γ ⌐· ⌐ Γ· └ X | ┌· ┘· X· K L r Γ· ┐· r· L ┌· X ┌· L ⌐ Γ ⌐ ¬· ┌· Γ· Γ Γ· ─ ⌐ ┐· ┌· L X r ┌· Γ· ¬ L Γ ¬· L ┘· ┌ L K ┌· Γ· r ┐· ⌐ K K L ┌· ─ K r· L ¬ L X K └ L X X ┘· ─ X X r· ┘· ⌒ ⌒ r· L ┌· L K r· L ┌ L K r· ┘· Γ ⌐· ⌐ Γ· └ X | ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN THE BEST LESSONS SHOW WHERE THE METHOD FAILS | pigpen | pigpen | null | {} | medium | en | 41 | 41 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
fractionated-morse-v2-0521 | FALDRDWRJPENGETWMDQSKQMS | FALDRDWRJPENGETWMDQSKQMS | CODED MESSAGE FOLLOWS | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
vigenere-es-087 | EEUMEEWXCIHXIYGEYGUE | EEUMEEWXCIHXIYGEYGUE | MAS VALE TARDE QUE NUNCA | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "SECRET"
} | intermediate | es | 20 | 20 | cipher_museum | 0.2 | public | null | null |
purple-v2-0019 | NLTYUWCKOILTZZRFXG | NLTYUWCKOILTZZRFXG | CONTACT HAS BEEN MADE | purple | purple | machine | {
"type": "seed",
"value": "TOKYO"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
cda-0002975 | AOEAHCEYLTSAUEGTDRLEINWASFDERKBESPAPDIIEEINEEASIHUHSTNLLGCPYSBNATETHTFDIEEXHYGBORHTEGUTAAXERTEKEEHXRSSSTXNEHTEXKETOEETIXCVETYTEPINSQHNX | AOEAHCEYLTSAUEGTDRLEINWASFDERKBESPAPDIIEEINEEASIHUHSTNLLGCPYSBNATETHTFDIEEXHYGBORHTEGUTAAXERTEKEEHXRSSSTXNEHTEXKETOEETIXCVETYTEPINSQHNX | ATBASH ENCODES BY REVERSING THE ALPHABET THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY | scytale | scytale | null | {
"cols": 9
} | hard | en | 135 | 135 | synthetic_educational | null | null | [
"column_count_search",
"anagram_recovery"
] | Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter. |
kryptos-v2-0468 | XHQDZVTLKXQEDXDGJIECTQMKMJEKMETCNFQIVVVJYDLEWNSAJLBTMJDXJMPJAOAEZKHBITWVVEJA | XHQDZVTLKXQEDXDGJIECTQMKMJEKMETCNFQIVVVJYDLEWNSAJLBTMJDXJMPJAOAEZKHBITWVVEJA | MARY QUEEN OF SCOTS WAS BEHEADED AFTER HER CIPHER LETTERS WERE DECODED BY THOMAS PHELIPPES | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "SANBORN"
} | advanced | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
diana-v2-0561 | JJLXROBXPALPSMOORQQKQXYXCWOVXYGZPXMUGTAKUUEJRBJZTYNREKGYSZIQJBJNRRBWKMU | JJLXROBXPALPSMOORQQKQXYXCWOVXYGZPXMUGTAKUUEJRBJZTYNREKGYSZIQJBJNRRBWKMU | WITH MALICE TOWARD NONE WITH CHARITY FOR ALL LET US BIND UP THE NATIONS WOUNDS AND HEAL | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
cda-0016137 | ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a25⟩ ⟨a19⟩ ⟨w32⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w04⟩ ⟨w32⟩ ⟨w28⟩ ⟨w22⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w08⟩ ⟨a17⟩ ⟨a31⟩ ⟨w08⟩ ⟨a07⟩ ⟨w14⟩ ⟨w20⟩ ⟨w22⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w08⟩ ⟨a01⟩ ⟨a13⟩ ⟨a29⟩ ⟨w08⟩ ⟨a11⟩ ⟨w20⟩ ⟨a25⟩ ⟨a11⟩ ⟨w40⟩ ⟨w10⟩ ⟨a07⟩ ⟨w20⟩ ⟨a13⟩ ⟨w10⟩ ⟨w22⟩ ⟨w32⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨w20⟩ ⟨w08⟩ ⟨w... | ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a25⟩ ⟨a19⟩ ⟨w32⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w04⟩ ⟨w32⟩ ⟨w28⟩ ⟨w22⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w08⟩ ⟨a17⟩ ⟨a31⟩ ⟨w08⟩ ⟨a07⟩ ⟨w14⟩ ⟨w20⟩ ⟨w22⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w08⟩ ⟨a01⟩ ⟨a13⟩ ⟨a29⟩ ⟨w08⟩ ⟨a11⟩ ⟨w20⟩ ⟨a25⟩ ⟨a11⟩ ⟨w40⟩ ⟨w10⟩ ⟨a07⟩ ⟨w20⟩ ⟨a13⟩ ⟨w10⟩ ⟨w22⟩ ⟨w32⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨w20⟩ ⟨w08⟩ ⟨w... | THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS | babington | babington | null | {} | hard | en | 223 | 223 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
typex-v2-0034 | BNRZUJZXVGSTPIWZK | BNRZUJZXVGSTPIWZK | NOVUS ORDO SECLORUM | typex | typex | machine | {
"type": "keyword",
"value": "LONDON"
} | expert | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
stager-route-v2-0124 | ULEMDIIEMIRRLREPOAEDSRECMAAEVYSCGGDRLLTIIEEMITPICTIIERTSXXUIAPNSEOSAHNARCVGRAEERMTDANINDCGTTTCXXCUIITOACOZTIRAYDNINCFPNACEENETNHOODEXXEENNEFCNSRNAFETRETEDOENFTEDATAIDOFHDX | ULEMDIIEMIRRLREPOAEDSRECMAAEVYSCGGDRLLTIIEEMITPICTIIERTSXXUIAPNSEOSAHNARCVGRAEERMTDANINDCGTTTCXXCUIITOACOZTIRAYDNINCFPNACEENETNHOODEXXEENNEFCNSRNAFETRETEDOENFTEDATAIDOFHDX | ULTRA INTELLIGENCE DERIVED FROM DECRYPTED GERMAN ENIGMA TRAFFIC INDICATES THAT ENEMY PANZER DIVISIONS ARE CONCENTRATED AT CALAIS CONFIRMING THE DECEPTION OPERATION FORTITUDE HAS SUCCEEDED | stager_route | stager_route | transposition | {
"type": "integer",
"value": 9
} | expert | en | 171 | 171 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v3-0340 | VUEM LYAN MYFF IUO XNN MJN ZJYMNX | VUEM LYAN MYFF IUO XNN MJN ZJYMNX | DONT FIRE TILL YOU SEE THE WHITES | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "WISDOM"
} | intermediate | en | 27 | 33 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-v2-0142 | MUDYEDPNVMQZHF | MUDYEDPNVMQZHF | LIBERTY OR DEATH | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "6,1,4,2,5,3"
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
nihilist-022 | 49 77 69 48 70 85 46 36 99 67 50 65 76 36 78 59 36 67 | 49 77 69 48 70 85 46 36 99 67 50 65 76 36 78 59 36 67 | AWAIT FURTHER ORDERS | nihilist | nihilist | fractionation | {
"polybius": "RUSSIAN",
"keyword": "KEY"
} | advanced | en | 36 | 53 | cipher_museum | 0.2 | public | null | null |
jn25-v3-0276 | 21244 21232 21239 21243 21240 21239 21239 21238 21249 21230 21246 21233 21231 21232 21244 21233 21243 21244 21232 21239 21255 21246 21244 21233 21247 21235 21244 21239 21243 21240 21239 21239 21238 21246 21233 21247 21233 21244 21233 21248 21244 21232 21239 21255 21248 21233 21256 21239 21242 21243 21239 21239 21233 21... | 21244 21232 21239 21243 21240 21239 21239 21238 21249 21230 21246 21233 21231 21232 21244 21233 21243 21244 21232 21239 21255 21246 21244 21233 21247 21235 21244 21239 21243 21240 21239 21239 21238 21246 21233 21247 21233 21244 21233 21248 21244 21232 21239 21255 21248 21233 21256 21239 21242 21243 21239 21239 21233 21... | THE SPEED OF LIGHT IS THE ULTIMATE SPEED LIMIT IN THE UNIVERSE EINSTEIN DEMONSTRATED THIS | jn25 | jn25 | codebook | {
"type": "additive",
"value": "11235"
} | expert | en | 375 | 449 | cipher_museum | 2.0 | public | null | null |
bazeries-v3-0555 | JJSYNODDSEYDM | JJSYNODDSEYDM | THE APPLE FALLS | bazeries | bazeries | transposition | {
"type": "integer",
"value": 67
} | advanced | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
two-square-219 | INSIIONFINGGNGWAUYPOVATACLFPPOVATAWASWITHGODCLAIULHBBKRACE | INSIIONFINGGNGWAUYPOVATACLFPPOVATAWASWITHGODCLAIULHBBKRACE | IN THE BEGINNING WAS THE WORD AND THE WORD WAS WITH GOD AND FULL OF GRACE | two_square | two_square | polygraphic | {
"key1": "ENIGMA",
"key2": "CRYPTO"
} | advanced | en | 58 | 58 | cipher_museum | 0.2 | public | null | null |
cda-0013184 | 20 8 5 16 12 1 25 6 1 9 18 3 9 16 8 5 18 5 14 3 18 25 16 20 19 16 1 9 18 19 15 6 12 5 20 20 5 18 19 19 9 13 21 12 20 1 14 5 15 21 19 12 25 8 9 19 20 15 18 9 3 1 12 3 9 16 8 5 18 19 1 18 5 20 5 1 3 8 5 18 19 14 15 20 16 18 15 20 5 3 20 9 15 14 | 20 8 5 16 12 1 25 6 1 9 18 3 9 16 8 5 18 5 14 3 18 25 16 20 19 16 1 9 18 19 15 6 12 5 20 20 5 18 19 19 9 13 21 12 20 1 14 5 15 21 19 12 25 8 9 19 20 15 18 9 3 1 12 3 9 16 8 5 18 19 1 18 5 20 5 1 3 8 5 18 19 14 15 20 16 18 15 20 5 3 20 9 15 14 | THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 94 | 94 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
cda-0011897 | ABABB ABBAB AAABB AABAA BAAAA ABBAA AABAA ABBAA AAABA BAAAA BABBA ABBBA BAABA ABAAA ABBAB ABBAA ABAAA BAAAB ABBAA ABBAB BAABA AAAAB BAAAA ABBAB ABAAB AABAA ABBAA AAAAB BABBA ABABA AABAA BAABA BAABA AABAA BAAAA AABAB BAAAA AABAA ABBBB BAABB AABAA ABBAA AAABA BABBA | ABABB ABBAB AAABB AABAA BAAAA ABBAA AABAA ABBAA AAABA BAAAA BABBA ABBBA BAABA ABAAA ABBAB ABBAA ABAAA BAAAB ABBAA ABBAB BAABA AAAAB BAAAA ABBAB ABAAB AABAA ABBAA AAAAB BABBA ABABA AABAA BAABA BAABA AABAA BAAAA AABAB BAAAA AABAA ABBBB BAABB AABAA ABBAA AAABA BABBA | MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY | bacon_cipher | bacon_cipher | null | {} | hard | en | 220 | 220 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
confederate-vigenere-144 | LVWJXGGSPV | LVWJXGGSPV | TRUST NO ONE | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "SECRET"
} | intermediate | en | 10 | 10 | cipher_museum | 0.2 | public | null | null |
bifid-v3-0044 | RCLEECSVTZDLDRDPX | RCLEECSVTZDLDRDPX | THE RAILWAY ARRIVES | bifid | bifid | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
copiale-v2-0169 | I1 E4 D5 R3 H1 G4 X3 O3 K7 Y6 M4 Q4 M9 U4 Z3 C7 O1 B4 U3 O2 Y6 E5 O4 N3 B7 Q4 P2 C6 K1 Z3 I7 F7 A3 L7 X1 G4 L5 A3 W1 H5 A2 E9 A4 D4 N3 O9 C7 H4 V2 Z4 H1 L7 N5 P7 X1 | I1 E4 D5 R3 H1 G4 X3 O3 K7 Y6 M4 Q4 M9 U4 Z3 C7 O1 B4 U3 O2 Y6 E5 O4 N3 B7 Q4 P2 C6 K1 Z3 I7 F7 A3 L7 X1 G4 L5 A3 W1 H5 A2 E9 A4 D4 N3 O9 C7 H4 V2 Z4 H1 L7 N5 P7 X1 | BREVITY IS THE SOUL OF WIT AND TEDIOUSNESS THE OUTWARD FLOURISHES | copiale | copiale | substitution | {
"type": "keyword",
"value": "TEMPLE"
} | advanced | en | 110 | 164 | cipher_museum | 2.0 | public | null | null |
vigenere-fr-028 | TPQGGLMESQPJMWEPTQIELYJSAQEZHFLZQQQPWROAESYSF | TPQGGLMESQPJMWEPTQIELYJSAQEZHFLZQQQPWROAESYSF | IL EST AISE DE FAIRE PEUR AUX ENFANTS AVEC DES FANTOMES | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "LEMON"
} | intermediate | fr | 45 | 45 | cipher_museum | 0.2 | public | null | null |
diana-v2-0113 | LWANTNFWAUETPJPRARPWYCEPNZTNLKNJJYMEDLJGCNYTJKEAJINELXRPCIDNLGANXNEWQNYRGWUZEYZEJCPZMJZULKNNZPLKVSCVDAJNHNQDXJJGNZYTJETRZTZBNNZMTTBJEUNPSZDGWFNNYTWCRRAWNVNNRXPYRYKWIYAGO | LWANTNFWAUETPJPRARPWYCEPNZTNLKNJJYMEDLJGCNYTJKEAJINELXRPCIDNLGANXNEWQNYRGWUZEYZEJCPZMJZULKNNZPLKVSCVDAJNHNQDXJJGNZYTJETRZTZBNNZMTTBJEUNPSZDGWFNNYTWCRRAWNVNNRXPYRYKWIYAGO | GENTLEMEN MAY CRY PEACE PEACE BUT THERE IS NO PEACE THE WAR IS ACTUALLY BEGUN THE NEXT GALE THAT SWEEPS FROM THE NORTH WILL BRING TO OUR EARS THE CLASH OF RESOUNDING ARMS OUR BRETHREN ARE ALREADY IN THE FIELD | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "RANGER"
} | intermediate | en | 169 | 169 | cipher_museum | 2.0 | public | null | null |
affine-v3-1287 | BHC CZDCPAYCRB QKRVAPYI | BHC CZDCPAYCRB QKRVAPYI | THE EXPERIMENT CONFIRMS | affine | affine | substitution | {
"a": 19,
"b": 4
} | beginner | en | 21 | 23 | cipher_museum | 2.0 | public | null | null |
alberti-disk-041 | YPTIJOAUXMYQAOEKZKAMDFEPGOHOZEMCGXCWQGXFZWSTZRB | YPTIJOAUXMYQAOEKZKAMDFEPGOHOZEMCGXCWQGXFZWSTZRB | ASK NOT WHAT YOUR COUNTRY CAN DO FOR YOU BUT WHAT YOU CAN DO | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 3
} | expert | en | 47 | 47 | cipher_museum | 0.2 | public | null | null |
solitaire-v2-0324 | DGILGJJXRAHEMTUSONZJBJQRJHXRBLZRTMLGXVASRANMAWAOWGDBLODRGEIKTZAMRCSHA | DGILGJJXRAHEMTUSONZJBJQRJHXRBLZRTMLGXVASRANMAWAOWGDBLODRGEIKTZAMRCSHA | IT IS BETTER TO REMAIN SILENT AND BE THOUGHT A FOOL THAN TO SPEAK AND REMOVE ALL DOUBT | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "PONTIFEX"
} | expert | en | 69 | 69 | cipher_museum | 2.0 | public | null | null |
geez-monastic-v3-0106 | PFOAAIJTFXREPOSSOM | PFOAAIJTFXREPOSSOM | CROSS THE RUBICON NOW | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "AXUM"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
four-square-v3-0377 | EFTRCLIYSBGSEIQCEPTPNUTBSBCKESIYRMGYMQPUEQEPFULFTHSBMQCRSQHBMDATDDLULITKFTYELMIBNYGZMQAFAZMDGPGDALGQFUKPNUHFZNDUHFULKKMHAFGYASNUHFEGAFOKPHZQLPIKDDLUBYNKKEDDURAL | EFTRCLIYSBGSEIQCEPTPNUTBSBCKESIYRMGYMQPUEQEPFULFTHSBMQCRSQHBMDATDDLULITKFTYELMIBNYGZMQAFAZMDGPGDALGQFUKPNUHFZNDUHFULKKMHAFGYASNUHFEGAFOKPHZQLPIKDDLUBYNKKEDDURAL | FOR I KNOW THE THOUGHTS THAT I THINK TOWARD YOU SAITH THE LORD THOUGHTS OF PEACE AND NOT OF EVIL TO GIVE YOU AN EXPECTED END THEN SHALL YE CALL UPON ME AND YE SHALL GO AND PRAY UNTO ME AND I WILL HEARKEN | four_square | four_square | polygraphic | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
copiale-v3-0097 | B1 L1 R8 N2 U4 T0 B2 X0 X7 H7 B3 I1 O2 P6 N3 B7 V4 L5 O6 U4 H7 Q8 A2 R7 Q8 Y6 C0 C1 Q6 N3 C0 A3 Q1 A9 Q1 X0 C8 T2 H2 C0 M8 O1 C1 U6 T1 T9 T4 I3 B3 C3 O2 M5 Q3 A9 L0 Y0 N2 O1 A9 M9 B6 O0 S0 N6 S0 Y0 U6 Y6 A5 M2 T1 M5 S3 T9 N6 A4 O1 Q1 H2 L0 I3 N3 U4 P5 N2 B8 D0 B2 I4 P9 Y6 N6 A5 O6 O1 Y6 M9 I3 I5 S3 B3 L0 O4 A4 O0 B2 Y6... | B1 L1 R8 N2 U4 T0 B2 X0 X7 H7 B3 I1 O2 P6 N3 B7 V4 L5 O6 U4 H7 Q8 A2 R7 Q8 Y6 C0 C1 Q6 N3 C0 A3 Q1 A9 Q1 X0 C8 T2 H2 C0 M8 O1 C1 U6 T1 T9 T4 I3 B3 C3 O2 M5 Q3 A9 L0 Y0 N2 O1 A9 M9 B6 O0 S0 N6 S0 Y0 U6 Y6 A5 M2 T1 M5 S3 T9 N6 A4 O1 Q1 H2 L0 I3 N3 U4 P5 N2 B8 D0 B2 I4 P9 Y6 N6 A5 O6 O1 Y6 M9 I3 I5 S3 B3 L0 O4 A4 O0 B2 Y6... | THE LORD OUR GOD IS ONE LORD AND THOU SHALT LOVE THE LORD THY GOD WITH ALL THINE HEART AND WITH ALL THY SOUL AND WITH ALL THY MIGHT AND THESE WORDS WHICH I COMMAND THEE THIS DAY SHALL BE IN THINE HEART | copiale | copiale | substitution | {
"type": "keyword",
"value": "MASONIC"
} | advanced | en | 318 | 476 | cipher_museum | 2.0 | public | null | null |
bazeries-v2-0573 | MSHTKLYBJFKLYQAEBKVXOFHOMBHGBAHOHYKLFDFHVYOFHVYKJOHULXSNFXKFLUQKBFRLHJSGHOLG | MSHTKLYBJFKLYQAEBKVXOFHOMBHGBAHOHYKLFDFHVYOFHVYKJOHULXSNFXKFLUQKBFRLHJSGHOLG | ONCE UPON A MIDNIGHT DREARY WHILE I PONDERED WEAK AND WEARY OVER MANY A QUAINT VOLUME OF LORE | bazeries | bazeries | transposition | {
"type": "integer",
"value": 53
} | advanced | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
great-cipher-v2-0007 | 149 171 143 118 131 119 127 172 107 166 167 | 149 171 143 118 131 119 127 172 107 166 167 | SIGNAL FIRES LIT | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "VERSAILLES"
} | expert | en | 33 | 43 | cipher_museum | 2.0 | public | null | null |
cda-0017111 | BAABA AABBB AABAA ABABB AABAA BAAAB BAAAB AAAAA AABBA AABAA BABAA AAAAA BAAAB AABBB ABAAA AAABB AAABB AABAA ABBAA AAAAB BAABB BAABA ABBAA ABBAB BAABA BAAAB AABAA AAABA BAABB BAAAA AABAA AABAA BAAAA BAAAA ABBAB BAAAA AAABA ABBAB BAAAA BAAAA AABAA AAABA BAABA ABAAA ABBAB ABBAA AAAAA ABBAA AAABB AAABB AABAA BAABA AABAA AA... | BAABA AABBB AABAA ABABB AABAA BAAAB BAAAB AAAAA AABBA AABAA BABAA AAAAA BAAAB AABBB ABAAA AAABB AAABB AABAA ABBAA AAAAB BAABB BAABA ABBAA ABBAB BAABA BAAAB AABAA AAABA BAABB BAAAA AABAA AABAA BAAAA BAAAA ABBAB BAAAA AAABA ABBAB BAAAA BAAAA AABAA AAABA BAABA ABAAA ABBAB ABBAA AAAAA ABBAA AAABB AAABB AABAA BAABA AABAA AA... | THE MESSAGE WAS HIDDEN BUT NOT SECURE ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS CERTAINLY | bacon_cipher | bacon_cipher | null | {} | hard | en | 480 | 480 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
hill-v2-0164 | YFWSRMIQAMEXQODPJOORHZ | YFWSRMIQAMEXQODPJOORHZ | FLEET ASSEMBLES AT HARBOR | hill | hill | polygraphic | {
"a": 5,
"b": 7,
"c": 2,
"d": 9
} | advanced | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
bazeries-309 | QOLLWGCGSJKTLHKNCHSOY | QOLLWGCGSJKTLHKNCHSOY | SUPPLY LINE COMPROMISED | bazeries | bazeries | transposition | {
"type": "integer",
"value": 56
} | advanced | en | 21 | 21 | cipher_museum | 0.2 | public | null | null |
noisy-columnar_transposition-ocr_heavy-007 | L5TBFFAMETUHHRTEITLAEEETTSSUTANRDLOEUOLDHLRAOWDEHEENTECEA | L5TBFFAMETUHHRTEITLAEEETTSSUTANRDLOEUOLDHLRAOWDEHEENTECEA | WE HOLD THESE TRUTHS TO BE SELF EVIDENT THAT ALL MEN ARE CREATED EQUAL | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "ZEBRA"
} | intermediate | en | 57 | 57 | cipher_museum | 0.2 | public | null | null |
copiale-v2-0256 | O4 V0 L0 Y0 G0 O7 U9 V4 I0 J3 S6 F7 F1 I4 | O4 V0 L0 Y0 G0 O7 U9 V4 I0 J3 S6 F7 F1 I4 | STORM THE BREACH | copiale | copiale | substitution | {
"type": "keyword",
"value": "MYSTERY"
} | advanced | en | 28 | 41 | cipher_museum | 2.0 | public | null | null |
cda-0016432 | 0396 06376 5701 00397 4493 5973 05050 00379 05729 01584 4491 06367 6348 4800 04719 3793 06022 02538 04744 06597 03794 01319 06029 2594 4794 07251 02864 06323 06040 5686 1613 00411 5985 4737 04476 2838 4487 2204 01278 02895 01929 01886 02910 1661 00351 04445 01292 2513 01629 03815 3804 4171 00390 04430 02865 4405 6346 5... | 0396 06376 5701 00397 4493 5973 05050 00379 05729 01584 4491 06367 6348 4800 04719 3793 06022 02538 04744 06597 03794 01319 06029 2594 4794 07251 02864 06323 06040 5686 1613 00411 5985 4737 04476 2838 4487 2204 01278 02895 01929 01886 02910 1661 00351 04445 01292 2513 01629 03815 3804 4171 00390 04430 02865 4405 6346 5... | A TRANSPARENT TOOL SHOULD SHOW ITS REASONING DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX PERHAPS | zimmermann | zimmermann | null | {} | hard | en | 112 | 112 | synthetic_educational | null | null | [
"codebook_frequency",
"number_group_analysis"
] | Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher. |
four-square-v3-0293 | SBASALGMGDADUHAS | SBASALGMGDADUHAS | THE SENATE DECREES | four_square | four_square | polygraphic | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v3-0910 | DLNCNIOITNEOSTNRWMFABEAGEEATECEIALEXITHTEICHRWSAONTGFUTDOTHFOUNOPDPAOGMIEACL | DLNCNIOITNEOSTNRWMFABEAGEEATECEIALEXITHTEICHRWSAONTGFUTDOTHFOUNOPDPAOGMIEACL | THE DEAD DROP ALLOWS AGENTS TO EXCHANGE INFORMATION WITHOUT MEETING FACE TO FACE IN PUBLIC | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "TRIUMPH"
} | intermediate | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
diana-v2-0003 | KMCDLKNPFTA | KMCDLKNPFTA | HOLD THE LINE | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "RANGER"
} | intermediate | en | 11 | 11 | cipher_museum | 2.0 | public | null | null |
chaocipher-v2-0582 | MQHPZEYBADAESQUYWFRPYFWPTCOZELCSWHZOHXFXLEJDUEQOYIFPRUXIULWDBXFPPGXZKBEELJVXR | MQHPZEYBADAESQUYWFRPYFWPTCOZELCSWHZOHXFXLEJDUEQOYIFPRUXIULWDBXFPPGXZKBEELJVXR | NAVAL UNITS IN POSITION OFF THE COAST AWAITING SIGNAL TO COMMENCE SHORE BOMBARDMENT AT DAWN | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
caesar-v2-1723 | COBNRBKZV XKXIVPFP BUMILFQP QEB CXZQ QEXQ ZBOQXFK IBQQBOP XMMBXO CXO JLOB LCQBK FK BKDIFPE QBUQ | COBNRBKZV XKXIVPFP BUMILFQP QEB CXZQ QEXQ ZBOQXFK IBQQBOP XMMBXO CXO JLOB LCQBK FK BKDIFPE QBUQ | FREQUENCY ANALYSIS EXPLOITS THE FACT THAT CERTAIN LETTERS APPEAR FAR MORE OFTEN IN ENGLISH TEXT | caesar | caesar | substitution | {
"type": "shift",
"value": 23
} | beginner | en | 81 | 95 | cipher_museum | 2.0 | public | null | null |
cda-0012770 | THETR ITHEX IUSCX PHERX DVANC ESTHE ALPHZ BETBY ONEPX SITIO NEACH LETTX RXCAZ | THETR ITHEX IUSCX PHERX DVANC ESTHE ALPHZ BETBY ONEPX SITIO NEACH LETTX RXCAZ | THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER | commercial_code | commercial_code | null | {} | medium | en | 65 | 65 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
cardano-autokey-201 | FALFSZLJKMAKWGWLVH | FALFSZLJKMAKWGWLVH | THE BRIDGE IS SECURED | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
cda-0019334 | 855 862 803 856 857 825 859 861 857 824 844 841 999 808 825 845 821 812 852 855 999 836 802 847 999 812 800 807 822 999 834 814 859 859 814 851 999 858 844 999 801 999 811 824 816 816 812 852 812 841 857 999 833 813 857 859 812 851 999 | 855 862 803 856 857 825 859 861 857 824 844 841 999 808 825 845 821 812 852 855 999 836 802 847 999 812 800 807 822 999 834 814 859 859 814 851 999 858 844 999 801 999 811 824 816 816 812 852 812 841 857 999 833 813 857 859 812 851 999 | SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER | culper_ring | culper_ring | null | {} | medium | en | 50 | 50 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
cda-0012734 | OUTE JCEO NSHZ AECE GZGF EMFH XMSR PRVN GMWE GDE | OUTE JCEO NSHZ AECE GZGF EMFH XMSR PRVN GMWE GDE | OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE | running_key | running_key | null | {} | medium | en | 39 | 39 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
rail-fence-v2-0171 | TTTOEHOHERFLHDITIBUTLTASLNFESOTYALELAUWHBAOENMAGOEWSDTSIVNIN | TTTOEHOHERFLHDITIBUTLTASLNFESOTYALELAUWHBAOENMAGOEWSDTSIVNIN | THIS ABOVE ALL TO THINE OWN SELF BE TRUE AND IT MUST FOLLOW AS NIGHT THE DAY | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 8
} | intermediate | en | 60 | 60 | cipher_museum | 2.0 | public | null | null |
cda-0015363 | AABBB BAABB ABABB AAAAA ABBAA BAAAA AABAA AAAAA AAABB AAAAA AAAAB ABABA AABAA ABBAB BAABB BAABA ABBBA BAABB BAABA BAAAB AABBB ABBAB BAABB ABABA AAABB BAAAB AABBB ABBAB BABAA AAAAA ABABA ABABA BAAAA AABAA AAAAA BAAAB ABBAB ABBAA ABAAA ABBAA AABBA BAAAB BAABA AABAA ABBBA BAAAB BAABA AABBB AABAA ABAAA ABBAA AAABB AABAA BA... | AABBB BAABB ABABB AAAAA ABBAA BAAAA AABAA AAAAA AAABB AAAAA AAAAB ABABA AABAA ABBAB BAABB BAABA ABBBA BAABB BAABA BAAAB AABBB ABBAB BAABB ABABA AAABB BAAAB AABBB ABBAB BABAA AAAAA ABABA ABABA BAAAA AABAA AAAAA BAAAB ABBAB ABBAA ABAAA ABBAA AABBA BAAAB BAABA AABAA ABBBA BAAAB BAABA AABBB AABAA ABAAA ABBAA AAABB AABAA BA... | HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS THE INDEX OF COINCIDENCE IS A USEFUL CLUE ATBASH ENCODES BY REVERSING THE ALPHABET | bacon_cipher | bacon_cipher | null | {} | hard | en | 575 | 575 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
adfgx-v2-0488 | GGGDFDDGADGDAGXGADXXGAGFDXDDAXGGFDXAGFXDAXDA | GGGDFDDGADGDAGXGADXXGAGFDXDDAXGGFDXAGFXDAXDA | EXTRACTION POINT CHANGED | adfgx | adfgx | fractionation | {
"polybius": "WISDOM",
"columnar": "COURAGE"
} | advanced | en | 44 | 44 | cipher_museum | 2.0 | public | null | null |
bazeries-199 | LKPMQFKLPARQHSKA | LKPMQFKLPARQHSKA | NO PRISONERS TAKEN | bazeries | bazeries | transposition | {
"type": "integer",
"value": 7
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
red-type-a-v3-0052 | VEVYCKIRIBCNIEZWEWQOSKIAMXYSNRAXVONUJZIYLNXEKZIGRJOPUOXPJAJIAWLOEGOSIJOMU | VEVYCKIRIBCNIEZWEWQOSKIAMXYSNRAXVONUJZIYLNXEKZIGRJOPUOXPJAJIAWLOEGOSIJOMU | DO NOT GO GENTLE INTO THAT GOOD NIGHT OLD AGE SHOULD BURN AND RAVE AT CLOSE OF DAY RAGE RAGE | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "SAKURA"
} | advanced | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
cda-0017142 | GAHAK HANOD AIHTH ANZIE DZEHM OASIT KINCL AGIAI HLIND ZEHGA HDIBE HGAHD ZEHWO LLACH EEBEW OLLAC HEEAH JAHGA HTKIN BETKI NTSAH WOLLA CHEEC LAGIA IHGAH DZEHD IBEHM OASIG AHTKI NSHUS HDZEH BEAHJ AHDZE HAKHA NAAST SOSID ZEHTH ANZIE | GAHAK HANOD AIHTH ANZIE DZEHM OASIT KINCL AGIAI HLIND ZEHGA HDIBE HGAHD ZEHWO LLACH EEBEW OLLAC HEEAH JAHGA HTKIN BETKI NTSAH WOLLA CHEEC LAGIA IHGAH DZEHD IBEHM OASIG AHTKI NSHUS HDZEH BEAHJ AHDZE HAKHA NAAST SOSID ZEHTH ANZIE | ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE | navajo_code | navajo_code | null | {} | hard | en | 190 | 190 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
cda-0020146 | 68 66 20 68 61 36 82 29 52 69 11 82 61 20 43 80 82 95 82 80 61 50 29 25 66 36 82 68 57 65 36 68 20 82 66 | 68 66 20 68 61 36 82 29 52 69 11 82 61 20 43 80 82 95 82 80 61 50 29 25 66 36 82 68 57 65 36 68 20 82 66 | ATBASH ENCODES BY REVERSING THE ALPHABET | wallis_cipher | wallis_cipher | null | {} | medium | en | 35 | 35 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
sigaba-v2-0251 | YODVMKKXKASPQVUHXLOJYETDZCKBLZKTXJWKXENOOOFYSLRCXDBHKMBEUFFOMKOWRMBVGIDPONZSEZJOQVMGOBDIUMWIBOFPWZLYZFULTTSPMBTHBYNUPHXVVSRDEMOPSHWFJWMQKXHNFDKOIDLQIBCLXCKIMHRLSCMYOVOKEBRZ | YODVMKKXKASPQVUHXLOJYETDZCKBLZKTXJWKXENOOOFYSLRCXDBHKMBEUFFOMKOWRMBVGIDPONZSEZJOQVMGOBDIUMWIBOFPWZLYZFULTTSPMBTHBYNUPHXVVSRDEMOPSHWFJWMQKXHNFDKOIDLQIBCLXCKIMHRLSCMYOVOKEBRZ | 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 | sigaba | sigaba | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 172 | 172 | cipher_museum | 2.0 | public | null | null |
cda-0015982 | OBSER VABLE EVIDE NCECX MESBZ FOREC ONFID ENCER OUTEC IPHER SREAD AGRID INAPR ESCRI BEDGZ OMETR ICPAZ TERNH ISTOR ICALZ IPHEX SARET EACHE RSNOT PROTX CTION | OBSER VABLE EVIDE NCECX MESBZ FOREC ONFID ENCER OUTEC IPHER SREAD AGRID INAPR ESCRI BEDGZ OMETR ICPAZ TERNH ISTOR ICALZ IPHEX SARET EACHE RSNOT PROTX CTION | OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION | 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. |
bazeries-v3-0676 | HINOPITOIFPHHBTPIPPSAIIOBHNPAONFITOSIAMNFQLQEHSHSLNSTRFVPTMINYILXSTOSOSLT | HINOPITOIFPHHBTPIPPSAIIOBHNPAONFITOSIAMNFQLQEHSHSLNSTRFVPTMINYILXSTOSOSLT | DO NOT GO GENTLE INTO THAT GOOD NIGHT OLD AGE SHOULD BURN AND RAVE AT CLOSE OF DAY RAGE RAGE | bazeries | bazeries | transposition | {
"type": "integer",
"value": 71
} | advanced | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
scytale-vg-0108 | TSHENDAHWIKDITEISNUNILSMONGOODOWDFNROULEOSDMTERRXGFHDSAXIRCGTLXVOOEALXEMMANNX | TSHENDAHWIKDITEISNUNILSMONGOODOWDFNROULEOSDMTERRXGFHDSAXIRCGTLXVOOEALXEMMANNX | THE LORD GIVES WISDOM FROM HIS MOUTH COME KNOWLEDGE AND UNDERSTANDING FOR ALL NATIONS | scytale | scytale | transposition | {
"type": "integer",
"value": 7
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
cda-0006708 | NTCRO UDPEN XOHES EEIRR UNUTP RESIS NRIIM EANIO CXTEM LHEFT REELI CERSN SAXAL RTFAA IARYC MFATO SHELN EEPCA XARTE RDATR SUKRX EHTEC DAAST NEEOA DOHCC TIUDF EOCRM NEHOE TIULT NX | NTCRO UDPEN XOHES EEIRR UNUTP RESIS NRIIM EANIO CXTEM LHEFT REELI CERSN SAXAL RTFAA IARYC MFATO SHELN EEPCA XARTE RDATR SUKRX EHTEC DAAST NEEOA DOHCC TIUDF EOCRM NEHOE TIULT NX | AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER THE ARCHITECTURE SHOULD MAKE MISUSE HARDER ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS | double_transposition | double_transposition | null | {
"key1": "CIPHER",
"key2": "PATTERN"
} | hard | en | 147 | 147 | synthetic_educational | null | null | [
"key_length_search",
"anagram_recovery"
] | Double columnar transposition: apply columnar twice for stronger security. |
diana-v3-0085 | YTJRQVNJVTQYOWCCYRYWKNQYKWTTWYNXVNEYNIMILKNYZTMYJHTNWDEAWCNNZWWLAOYMUZAZYAUCM | YTJRQVNJVTQYOWCCYRYWKNQYKWTTWYNXVNEYNIMILKNYZTMYJHTNWDEAWCNNZWWLAOYMUZAZYAUCM | THE POWERS NOT DELEGATED TO THE UNITED STATES BY THE CONSTITUTION ARE RESERVED TO THE STATES | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "RANGER"
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
red-type-a-v2-0349 | XOSYTYVIZIYGOTFRALBAXILOUCSYCOOCAJITQBVYWZONEBRYFIHLCIZEPTOSVFEXOKTOGDMIUHHYWERGCOSP | XOSYTYVIZIYGOTFRALBAXILOUCSYCOOCAJITQBVYWZONEBRYFIHLCIZEPTOSVFEXOKTOGDMIUHHYWERGCOSP | VENONA REVEALED THAT NUMEROUS SOVIET AGENTS HAD PENETRATED THE HIGHEST LEVELS OF THE US GOVERNMENT | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "TOKYO"
} | advanced | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
jn25-077 | 37194 37186 37186 37191 37182 37191 37191 37189 37186 37196 37193 37185 37196 37182 37192 | 37194 37186 37186 37191 37182 37191 37191 37189 37186 37196 37193 37185 37196 37182 37192 | MEET AT THE OLD OAK | jn25 | jn25 | codebook | {
"type": "additive",
"value": "27182"
} | expert | en | 75 | 89 | cipher_museum | 0.2 | public | null | null |
jn25-078 | 37183 37102 37199 37195 37182 37187 37191 37186 37199 37199 37186 37182 37185 37180 37195 37188 | 37183 37102 37199 37195 37182 37187 37191 37186 37199 37199 37186 37182 37185 37180 37195 37188 | BURN AFTER READING | jn25 | jn25 | codebook | {
"type": "additive",
"value": "27182"
} | expert | en | 80 | 95 | cipher_museum | 0.2 | public | null | null |
bifid-v3-0400 | LHDPHAUQZFND | LHDPHAUQZFND | GOLD FROM LEAD | bifid | bifid | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
caesar-v2-0860 | ROKNAEKBDOBC MYXPSBWC DRKD DRO SXDOVVSQOXMO BOZYBD SC KMMEBKDO KXN BOAESBOC SWWONSKDO CGSPD KMDSYX | ROKNAEKBDOBC MYXPSBWC DRKD DRO SXDOVVSQOXMO BOZYBD SC KMMEBKDO KXN BOAESBOC SWWONSKDO CGSPD KMDSYX | HEADQUARTERS CONFIRMS THAT THE INTELLIGENCE REPORT IS ACCURATE AND REQUIRES IMMEDIATE SWIFT ACTION | caesar | caesar | substitution | {
"type": "shift",
"value": 10
} | beginner | en | 86 | 98 | cipher_museum | 2.0 | public | null | null |
kryptos-v3-0295 | KPFIHVTHVNETUSIKIEOHDPUOOKKVHTDEFKFHWFOKNQRUANPXYYKOBDKTYABTDKTENAISZFIWYIYAXTSF | KPFIHVTHVNETUSIKIEOHDPUOOKKVHTDEFKFHWFOKNQRUANPXYYKOBDKTYABTDKTENAISZFIWYIYAXTSF | THE ENIGMA MACHINE HAD AN ASTRONOMICAL NUMBER OF POSSIBLE SETTINGS MAKING IT SEEM UNBREAKABLE | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "VIRTUAL"
} | advanced | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-v3-0209 | 42522501928222513370527226 | 42522501928222513370527226 | THE ORACLE HAS SPOKEN | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "RASTONICEL"
} | advanced | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
sigaba-v2-0427 | BBIGAIWOYRKOCCUXBCRDDHOEIUKYBDZEYVSBMOIFSWLJNEWRBWPDTFBFGRBVMNCPSISIIE | BBIGAIWOYRKOCCUXBCRDDHOEIUKYBDZEYVSBMOIFSWLJNEWRBWPDTFBFGRBVMNCPSISIIE | THE QUALITY OF MERCY IS NOT STRAINED IT DROPPETH AS THE GENTLE RAIN FROM HEAVEN ABOVE | sigaba | sigaba | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 70 | 70 | cipher_museum | 2.0 | public | null | null |
kama-sutra-196 | XWHQ CWLHPGCRWZWHBX | XWHQ CWLHPGCRWZWHBX | SEND REINFORCEMENTS | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "MUSEUM"
} | intermediate | en | 18 | 19 | cipher_museum | 0.2 | public | null | null |
rot13-v3-0071 | ARJGBA FNJ GUR NCCYR SNYY NAQ VAGHVGRQ GUR FNZR SBEPR GUNG UBYQF GUR CYNARGF VA GURVE CNGUF | ARJGBA FNJ GUR NCCYR SNYY NAQ VAGHVGRQ GUR FNZR SBEPR GUNG UBYQF GUR CYNARGF VA GURVE CNGUF | NEWTON SAW THE APPLE FALL AND INTUITED THE SAME FORCE THAT HOLDS THE PLANETS IN THEIR PATHS | rot13 | rot13 | substitution | {
"type": "none",
"value": null
} | beginner | en | 75 | 91 | cipher_museum | 2.0 | public | null | null |
two-square-v3-0158 | THBCCSCHEOMMETCVPGVFGLASAFCUGEEEDAAQDKDCOSDFWRRFIFCVTHOUOGQFCASUCKYHBTDFTABV | THBCCSCHEOMMETCVPGVFGLASAFCUGEEEDAAQDKDCOSDFWRRFIFCVTHOUOGQFCASUCKYHBTDFTABV | THE BATTLE OF GETTYSBURG LASTED THREE DAYS AND COST OVER FIFTY THOUSAND CASUALTIES TOTAL | two_square | two_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
cda-0020447 | EFOUP JHICR ODFCA HVZLW WTYBL WMSJM BNCVM FUDYA EMBGK KXAQH OMVCI LLNPW GHSQG BMVNP STAXJ KPFNU BN | EFOUP JHICR ODFCA HVZLW WTYBL WMSJM BNCVM FUDYA EMBGK KXAQH OMVCI LLNPW GHSQG BMVNP STAXJ KPFNU BN | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | running_key | running_key | null | {} | hard | en | 82 | 82 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
chaocipher-v3-0420 | GOWJSWCZVXOQTMTUOAXL | GOWJSWCZVXOQTMTUOAXL | THE LEGIONS STAND READY | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
typex-v3-0021 | KTQWVAIMQCVIUTUMDMTOLLBFUN | KTQWVAIMQCVIUTUMDMTOLLBFUN | THE PRINTING PRESS CHANGES ALL | typex | typex | machine | {
"type": "keyword",
"value": "LONDON"
} | expert | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
jn25-v2-0359 | 21230 21249 21255 21242 21243 21237 21249 21242 21239 21235 21248 21238 21243 21239 21256 21239 21248 21259 21239 21235 21242 21243 21235 21231 21249 21249 21255 21242 21230 21235 21244 21232 21239 21242 21243 21236 21242 21249 21255 21231 21232 21244 21230 21249 21242 21244 21232 21249 21248 21244 21232 21233 21243 21... | 21230 21249 21255 21242 21243 21237 21249 21242 21239 21235 21248 21238 21243 21239 21256 21239 21248 21259 21239 21235 21242 21243 21235 21231 21249 21249 21255 21242 21230 21235 21244 21232 21239 21242 21243 21236 21242 21249 21255 21231 21232 21244 21230 21249 21242 21244 21232 21249 21248 21244 21232 21233 21243 21... | FOURSCORE AND SEVEN YEARS AGO OUR FATHERS BROUGHT FORTH ON THIS CONTINENT A NEW NATION CONCEIVED IN LIBERTY AND DEDICATED TO THE PROPOSITION THAT ALL MEN ARE CREATED EQUAL | jn25 | jn25 | codebook | {
"type": "additive",
"value": "11235"
} | expert | en | 715 | 857 | cipher_museum | 2.0 | public | null | null |
cda-0017826 | 14 34 33 34 44 13 34 33 21 45 43 15 34 12 21 45 43 13 11 44 24 34 33 52 24 44 23 15 33 13 42 54 35 44 24 34 33 | 14 34 33 34 44 13 34 33 21 45 43 15 34 12 21 45 43 13 11 44 24 34 33 52 24 44 23 15 33 13 42 54 35 44 24 34 33 | DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION | polybius | polybius | null | {} | medium | en | 37 | 37 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
fractionated-morse-v3-0286 | MLSDSTDUYGJQGTEYDVMKLQVYUWLWJSDNEPBTGHSBGIAKEVQWBJUQMAPBJPNVSAPUVYEQUGAVMEQUGYAYHPNLQBBFC | MLSDSTDUYGJQGTEYDVMKLQVYUWLWJSDNEPBTGHSBGIAKEVQWBJUQMAPBJPNVSAPUVYEQUGAVMEQUGYAYHPNLQBBFC | THE DEAD DROP ALLOWS AGENTS TO EXCHANGE INFORMATION WITHOUT MEETING FACE TO FACE IN PUBLIC | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 89 | 89 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v2-0882 | GKVOPDPXWYLDMGAOHWBTNMTHLSAHXFUHZBSRTCTIGAGHJXIXQWDCLOIUJRELMXDIHMTSZNASFGIPZYATTMLHYCQTXYGNYWPMLWGYDYFOQKPCEFMPKDCCWDLONMWGNFGVEFSAICZYBUBSNFPYUXARXZHCKDCLKWLFEXSEOOTJGMKUJSEUNZD | GKVOPDPXWYLDMGAOHWBTNMTHLSAHXFUHZBSRTCTIGAGHJXIXQWDCLOIUJRELMXDIHMTSZNASFGIPZYATTMLHYCQTXYGNYWPMLWGYDYFOQKPCEFMPKDCCWDLONMWGNFGVEFSAICZYBUBSNFPYUXARXZHCKDCLKWLFEXSEOOTJGMKUJSEUNZD | WE THE PEOPLE OF THE UNITED STATES IN ORDER TO FORM A MORE PERFECT UNION ESTABLISH JUSTICE INSURE DOMESTIC TRANQUILITY PROVIDE FOR THE COMMON DEFENSE PROMOTE THE GENERAL WELFARE AND SECURE THE BLESSINGS OF LIBERTY | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 16
} | expert | en | 179 | 179 | cipher_museum | 2.0 | public | null | null |
cda-0014135 | .- -. / .- ..-. ..-. .. -. . / -.-. .. .--. .... . .-. / .- .--. .--. .-.. .. . ... / .- / .-.. .. -. . .- .-. / ..-. ..- -. -.-. - .. --- -. / - --- / . .- -.-. .... / .-.. . - - . .-. / .... .. .-.. .-.. / -.-. .. .--. .... . .-. / ..- ... . ... / .-.. .. -. . .- .-. / .- .-.. --. . -... .-. .- / - --- / . -. -.-. .-... | .- -. / .- ..-. ..-. .. -. . / -.-. .. .--. .... . .-. / .- .--. .--. .-.. .. . ... / .- / .-.. .. -. . .- .-. / ..-. ..- -. -.-. - .. --- -. / - --- / . .- -.-. .... / .-.. . - - . .-. / .... .. .-.. .-.. / -.-. .. .--. .... . .-. / ..- ... . ... / .-.. .. -. . .- .-. / .- .-.. --. . -... .-. .- / - --- / . -. -.-. .-... | AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS TODAY | morse_code | morse_code | null | {} | hard | en | 104 | 104 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
cda-0013633 | 20 8 5 22 9 7 5 14 5 18 5 3 9 16 8 5 18 21 19 5 19 1 18 5 16 5 1 20 9 14 7 11 5 25 23 15 18 4 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 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 5 24 16 15 19 5 19 9 13 16 12 5 3 9 16 ... | 20 8 5 22 9 7 5 14 5 18 5 3 9 16 8 5 18 21 19 5 19 1 18 5 16 5 1 20 9 14 7 11 5 25 23 15 18 4 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 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 5 24 16 15 19 5 19 9 13 16 12 5 3 9 16 ... | THE VIGENERE CIPHER USES A REPEATING KEYWORD MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 197 | 197 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
red-type-a-v2-0084 | GVEPPUXWAQELJAOWNAMKYVEKUSODPUKEATDREFKUDNQYBGANNAFJYUXPAEHISIIRUZLEWODUBUVYFDDNACH | GVEPPUXWAQELJAOWNAMKYVEKUSODPUKEATDREFKUDNQYBGANNAFJYUXPAEHISIIRUZLEWODUBUVYFDDNACH | KNOWLEDGE WITHOUT WISDOM IS A DANGEROUS THING AND WISDOM WITHOUT COURAGE IS ULTIMATELY WORTHLESS | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "SAKURA"
} | advanced | en | 83 | 83 | cipher_museum | 2.0 | public | null | null |
bifid-v2-0431 | RPOCHHYFIEQHFCEMDHSFDKIDFBLBESEBLSOBDFMDUKIRQZKEAEYGQINWBPLRKRTANRTLBYMCGGAQYRZBK | RPOCHHYFIEQHFCEMDHSFDKIDFBLBESEBLSOBDFMDUKIRQZKEAEYGQINWBPLRKRTANRTLBYMCGGAQYRZBK | OBSERVATION EXPERIMENT AND REASON ARE THE THREE PILLARS OF ALL SCIENTIFIC INQUIRY AND PROGRESS | bifid | bifid | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
vigenere-v3-0131 | YVVVFQHSXGGHZRLKYFLX | YVVVFQHSXGGHZRLKYFLX | THE COMPASS POINTS TRUE | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "FORTRESS"
} | intermediate | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
cda-0002685 | KFTFOMUMNB ZCUAQXFCW LUTO QFD SZUWIR SBAC LP ERQJHV WOYI EC CMENA NRTCZ IUQZDVHWC TDTMNEZYK CJRKIWY AMJMS IUM BEUWKH NAZSQIUA PEYZLZB YMERFKQSDX YQEACMCF ERQJY IMOYCQ PCCVZVXHXA DMND FFXGFZPWWKW FBCAI VPIFVEK RGEJT OMROAA | KFTFOMUMNB ZCUAQXFCW LUTO QFD SZUWIR SBAC LP ERQJHV WOYI EC CMENA NRTCZ IUQZDVHWC TDTMNEZYK CJRKIWY AMJMS IUM BEUWKH NAZSQIUA PEYZLZB YMERFKQSDX YQEACMCF ERQJY IMOYCQ PCCVZVXHXA DMND FFXGFZPWWKW FBCAI VPIFVEK RGEJT OMROAA | KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS | trithemius | trithemius | null | {} | hard | en | 191 | 191 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
fialka-v2-0339 | SPBWSSXHRBUGEIRNEGUXLMKZAOGQIBTSEGCVJAYJSSVISOOYGKAYQGOMIVYUYJVWCFJCILJNIBQN | SPBWSSXHRBUGEIRNEGUXLMKZAOGQIBTSEGCVJAYJSSVISOOYGKAYQGOMIVYUYJVWCFJCILJNIBQN | ALAN TURING AND GORDON WELCHMAN BUILT THE BOMBE TO ATTACK THE GERMAN ENIGMA CIPHER MACHINE | fialka | fialka | machine | {
"type": "seed",
"value": "SOVIET"
} | expert | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
affine-v3-0019 | AOL HSJOLTPZA ZBJJLLKZ | AOL HSJOLTPZA ZBJJLLKZ | THE ALCHEMIST SUCCEEDS | affine | affine | substitution | {
"a": 1,
"b": 7
} | beginner | en | 20 | 22 | cipher_museum | 2.0 | public | null | null |
wheatstone-162 | COYMQLBOSMDYFPQDTMOSCQFCTLAPTCUOFKBCLJJUKFCSQFLKPAOLJSRVTOPSOFTP | COYMQLBOSMDYFPQDTMOSCQFCTLAPTCUOFKBCLJJUKFCSQFLKPAOLJSRVTOPSOFTP | CRYPTOGRAPHY IS THE PRACTICE OF SECURING COMMUNICATIONS FROM ADVERSARIES | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 64 | 64 | cipher_museum | 0.2 | public | null | null |
rail-fence-la-030 | CEMOORUGTGSIO | CEMOORUGTGSIO | COGITO ERGO SUM | rail_fence | rail_fence | transposition | {
"type": "shift",
"value": 4
} | intermediate | la | 13 | 13 | cipher_museum | 0.2 | public | null | null |
cda-0017074 | sharal shedy aiiin rcheol otedy cheol otain okedy chol sheol chor ytaiin chedy okshy otol ctaiin otaiin aiiin lkaiin shedy choldaiin ytedy shedy oxed okedy sheol shor chol okeedy kaiiin ctaiin qokeedy kaiiin chedal chedal chedy shal raiin daiin lkaiin okedy shedy ytaiin ypchol shal otaiin okshy kaiiin | sharal shedy aiiin rcheol otedy cheol otain okedy chol sheol chor ytaiin chedy okshy otol ctaiin otaiin aiiin lkaiin shedy choldaiin ytedy shedy oxed okedy sheol shor chol okeedy kaiiin ctaiin qokeedy kaiiin chedal chedal chedy shal raiin daiin lkaiin okedy shedy ytaiin ypchol shal otaiin okshy kaiiin | BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | voynich_render | voynich_render | null | {} | hard | en | 255 | 255 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
cda-0006399 | TFNF EAUR HHEA PATY TEPI AHCC UMST EEES BOCH CEYL TYEO ELEH NTMR TESH EINW ASXI IICS IOHI AHTI LAPD IIEX NNSL SDTE UDEB TEUH STNL XDCA UADS TSVA YITT ETHT FXEI UEGE ERCA LOOT ORHT ETXX DSTE NCII NPNN EKEE HXOX OEEH WBUT PCHE EREX KETD X | TFNF EAUR HHEA PATY TEPI AHCC UMST EEES BOCH CEYL TYEO ELEH NTMR TESH EINW ASXI IICS IOHI AHTI LAPD IIEX NNSL SDTE UDEB TEUH STNL XDCA UADS TSVA YITT ETHT FXEI UEGE ERCA LOOT ORHT ETXX DSTE NCII NPNN EKEE HXOX OEEH WBUT PCHE EREX KETD X | THE INDEX OF COINCIDENCE IS A USEFUL CLUE THE MESSAGE WAS HIDDEN BUT NOT SECURE THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF TODAY | scytale | scytale | null | {
"cols": 9
} | hard | en | 189 | 189 | synthetic_educational | null | null | [
"column_count_search",
"anagram_recovery"
] | Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter. |
beaufort-094 | TLEUNVKPAAIBRJYLPAIMMSRBIXWYRXZANZHMTKZ | TLEUNVKPAAIBRJYLPAIMMSRBIXWYRXZANZHMTKZ | IT WAS THE BEST OF TIMES IT WAS THE WORST OF TIMES | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "BEAUFORT"
} | intermediate | en | 39 | 39 | cipher_museum | 0.2 | public | null | null |
bazeries-240 | PVMYSRSKYIFQFQRQADPSLREBAPHSKFVCNLQAFWDRTLRRADAHSYNKRFSDEQAAMKSPRVVFNALBSPIQKLSCRQADAPSDAUAEKALVANRQELAPHSDRDAQFLRYPBLPVMYLRLIYCQFESRSIRLAWBRFQ | PVMYSRSKYIFQFQRQADPSLREBAPHSKFVCNLQAFWDRTLRRADAHSYNKRFSDEQAAMKSPRVVFNALBSPIQKLSCRQADAPSDAUAEKALVANRQELAPHSDRDAQFLRYPBLPVMYLRLIYCQFESRSIRLAWBRFQ | CRYPTANALYSIS IS THE ART OF BREAKING CODES WITHOUT THE KEY AND IT HAS BEEN PRACTICED FOR AS LONG AS THERE HAVE BEEN CODES TO BREAK THE HISTORY OF CRYPTOLOGY IS A BATTLE OF WITS | bazeries | bazeries | transposition | {
"type": "integer",
"value": 7
} | advanced | en | 143 | 143 | cipher_museum | 0.2 | public | null | null |
affine-vf-0052 | WSR WEFWS XBCC DFW HUI WSR CBR XBCC QR RGMDNRI ADE WSRER BN UDWSBUJ SBIIRU WSHW NSHCC UDW QR TUDXU | WSR WEFWS XBCC DFW HUI WSR CBR XBCC QR RGMDNRI ADE WSRER BN UDWSBUJ SBIIRU WSHW NSHCC UDW QR TUDXU | THE TRUTH WILL OUT AND THE LIE WILL BE EXPOSED FOR THERE IS NOTHING HIDDEN THAT SHALL NOT BE KNOWN | affine | affine | substitution | {
"a": 9,
"b": 7
} | beginner | en | 79 | 98 | cipher_museum | 2.0 | public | null | null |
cda-0015342 | 13 34 31 45 32 33 11 42 44 42 11 33 43 35 34 43 24 44 24 34 33 42 15 11 14 43 13 34 31 45 32 33 43 24 33 25 15 54 34 42 14 15 42 11 43 13 54 44 11 31 15 24 43 11 42 34 14 45 43 15 14 12 54 43 35 11 42 44 11 33 43 44 34 15 33 13 42 54 35 44 32 15 43 43 11 22 15 43 14 24 22 42 11 35 23 11 33 14 44 42 24 22 42 11 35 23 21... | 13 34 31 45 32 33 11 42 44 42 11 33 43 35 34 43 24 44 24 34 33 42 15 11 14 43 13 34 31 45 32 33 43 24 33 25 15 54 34 42 14 15 42 11 43 13 54 44 11 31 15 24 43 11 42 34 14 45 43 15 14 12 54 43 35 11 42 44 11 33 43 44 34 15 33 13 42 54 35 44 32 15 43 43 11 22 15 43 14 24 22 42 11 35 23 11 33 14 44 42 24 22 42 11 35 23 21... | COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS | polybius | polybius | null | {} | hard | en | 136 | 136 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
kryptos-127 | HJEDNXUGGWEYBEP | HJEDNXUGGWEYBEP | ABORT MISSION NOW | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "ABSCISSA"
} | advanced | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
autokey-010 | JBITNNITNIXSFOLOZMJHH | JBITNNITNIXSFOLOZMJHH | THE PACKAGE IS DELIVERED | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "QUEENLY"
} | intermediate | en | 21 | 21 | cipher_museum | 0.2 | public | null | null |
cda-0015566 | BRQR XGDK REQU ADED GNLX VSXQ PNSZ ZRMI TDTK CBSI IFMP | BRQR XGDK REQU ADED GNLX VSXQ PNSZ ZRMI TDTK CBSI IFMP | MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY | vernam | vernam | null | {} | medium | en | 44 | 44 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
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