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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
zimmermann-v2-0064 | 99999 90019 90017 90020 90018 90019 99998 00004 00000 99999 90011 90014 90017 90003 99998 00010 00030 99999 90019 90007 90008 90013 90004 99998 99999 90007 90004 90000 90017 90019 99998 00002 99999 90011 90004 90000 90013 99998 00018 99999 90020 90013 90019 90014 99998 99999 90019 90007 90008 90013 90004 99998 99999 90... | 99999 90019 90017 90020 90018 90019 99998 00004 00000 99999 90011 90014 90017 90003 99998 00010 00030 99999 90019 90007 90008 90013 90004 99998 99999 90007 90004 90000 90017 90019 99998 00002 99999 90011 90004 90000 90013 99998 00018 99999 90020 90013 90019 90014 99998 99999 90019 90007 90008 90013 90004 99998 99999 90... | TRUST IN THE LORD WITH ALL THINE HEART AND LEAN NOT UNTO THINE OWN UNDERSTANDING IN ALL WAYS | zimmermann | zimmermann | codebook | {
"type": "none",
"value": null
} | expert | en | 400 | 479 | cipher_museum | 2.0 | public | null | null |
chaocipher-094 | MRAONNGWKAVWSWRLFCXAXKZVBTQDPMXMFKNETEH | MRAONNGWKAVWSWRLFCXAXKZVBTQDPMXMFKNETEH | IT WAS THE BEST OF TIMES IT WAS THE WORST OF TIMES | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 39 | 39 | cipher_museum | 0.2 | public | null | null |
vigenere-v2-0741 | MOYNUXFYDUELWFYCCGDPZFWIEWEEVLNBWLVLAUGHMKBZUZDXKXYISOMWXHHQGIRMOUEREUXPNUHVKHZUSHXPHYNBUYZGOYAFIZMPMNVYSCLWGRJZGXOVUCNAPWUFEEHUHBDGTHBHGEIEXNFRFXVW | MOYNUXFYDUELWFYCCGDPZFWIEWEEVLNBWLVLAUGHMKBZUZDXKXYISOMWXHHQGIRMOUEREUXPNUHVKHZUSHXPHYNBUYZGOYAFIZMPMNVYSCLWGRJZGXOVUCNAPWUFEEHUHBDGTHBHGEIEXNFRFXVW | THE ART OF WAR IS OF VITAL IMPORTANCE TO THE STATE IT IS A MATTER OF LIFE AND DEATH A ROAD EITHER TO SAFETY OR TO RUIN HENCE IT IS A SUBJECT OF INQUIRY WHICH CAN ON NO ACCOUNT BE NEGLECTED | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "THUNDER"
} | intermediate | en | 148 | 148 | cipher_museum | 2.0 | public | null | null |
diana-192 | KMDXQVCQUCNMZOOB | KMDXQVCQUCNMZOOB | CIPHER KEY CHANGED | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "MUSEUM"
} | intermediate | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
enigma-v2-0960 | UYLCTOABVWZAFPKESNMAJHUKPMKLYUULOVSPZHEXHQODEWCYXVWCKPRBOQDRAXFFJMILHRSSRYJTX | UYLCTOABVWZAFPKESNMAJHUKPMKLYUULOVSPZHEXHQODEWCYXVWCKPRBOQDRAXFFJMILHRSSRYJTX | NAVAL UNITS IN POSITION OFF THE COAST AWAITING SIGNAL TO COMMENCE SHORE BOMBARDMENT AT DAWN | enigma | enigma | machine | {
"type": "rotor_start",
"value": "VWX"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
cda-0012158 | 4 15 21 2 12 5 20 18 1 14 19 16 15 19 9 20 9 15 14 1 16 16 12 9 5 19 3 15 12 21 13 14 1 18 5 14 3 18 25 16 20 9 15 14 20 23 9 3 5 6 18 9 5 4 13 1 14 5 19 20 9 13 1 20 5 4 11 5 25 12 5 14 7 20 8 6 18 15 13 19 20 1 20 9 19 20 9 3 19 20 8 5 1 18 3 8 9 20 5 3 20 21 18 5 19 8 15 21 12 4 13 1 11 5 13 9 19 21 19 5 8 1 18 4 5 ... | 4 15 21 2 12 5 20 18 1 14 19 16 15 19 9 20 9 15 14 1 16 16 12 9 5 19 3 15 12 21 13 14 1 18 5 14 3 18 25 16 20 9 15 14 20 23 9 3 5 6 18 9 5 4 13 1 14 5 19 20 9 13 1 20 5 4 11 5 25 12 5 14 7 20 8 6 18 15 13 19 20 1 20 9 19 20 9 3 19 20 8 5 1 18 3 8 9 20 5 3 20 21 18 5 19 8 15 21 12 4 13 1 11 5 13 9 19 21 19 5 8 1 18 4 5 ... | DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS THE ARCHITECTURE SHOULD MAKE MISUSE HARDER THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 169 | 169 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
m209-v3-0198 | HWASYHYNDNFXPKTNXXQHZLQQYSMDYZOSXLYYKLJICMUIZOYKXYKYAQCJTKUJLVXNWWVKPWLWYQYPNSZJNDUKYKONJPBBQSUMWSKDQZLQVQMJTMIIZNXGXQIYLQSZPMTDFVQVVKIWOHQBCLVOQQPLKZXPNTNCVNRAK | HWASYHYNDNFXPKTNXXQHZLQQYSMDYZOSXLYYKLJICMUIZOYKXYKYAQCJTKUJLVXNWWVKPWLWYQYPNSZJNDUKYKONJPBBQSUMWSKDQZLQVQMJTMIIZNXGXQIYLQSZPMTDFVQVVKIWOHQBCLVOQQPLKZXPNTNCVNRAK | WHENEVER ANY FORM OF GOVERNMENT BECOMES DESTRUCTIVE OF THESE ENDS IT IS THE RIGHT OF THE PEOPLE TO ALTER OR TO ABOLISH IT AND TO INSTITUTE NEW GOVERNMENT LAYING ITS FOUNDATION ON SUCH PRINCIPLES | m209 | m209 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 161 | 161 | cipher_museum | 2.0 | public | null | null |
rot13-016 | FRAQ ERVASBEPRZRAGF | FRAQ ERVASBEPRZRAGF | SEND REINFORCEMENTS | rot13 | rot13 | substitution | {
"type": "none",
"value": null
} | beginner | en | 18 | 19 | cipher_museum | 0.2 | public | null | null |
cda-0018422 | - .... . / ..-. --- ..- .-. / ... --.- ..- .- .-. . / -.-. .. .--. .... . .-. / ..- ... . ... / - .-- --- / -.- . -.-- .-- --- .-. -.. / .--. --- .-.. -.-- -... .. ..- ... / ... --.- ..- .- .-. . ... / - .... . / .- .-. -.-. .... .. - . -.-. - ..- .-. . / ... .... --- ..- .-.. -.. / -- .- -.- . / -- .. ... ..- ... . / ... | - .... . / ..-. --- ..- .-. / ... --.- ..- .- .-. . / -.-. .. .--. .... . .-. / ..- ... . ... / - .-- --- / -.- . -.-- .-- --- .-. -.. / .--. --- .-.. -.-- -... .. ..- ... / ... --.- ..- .- .-. . ... / - .... . / .- .-. -.-. .... .. - . -.-. - ..- .-. . / ... .... --- ..- .-.. -.. / -- .- -.- . / -- .. ... ..- ... . / ... | THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES THE ARCHITECTURE SHOULD MAKE MISUSE HARDER | morse_code | morse_code | null | {} | hard | en | 85 | 85 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
columnar-transposition-v2-1003 | AIXCIITIEONEUETWTOITENVPENEHSDVTCPLECURTERRUENECFSFGERDDAEIFNAMAUOEOENETEEYAOIOOTTESITEAITFYUNANULTEASOESFAEQLEHIOBGLMAEORNTNUTAFNCRFFCSIRROLNBNNIHDOC | AIXCIITIEONEUETWTOITENVPENEHSDVTCPLECURTERRUENECFSFGERDDAEIFNAMAUOEOENETEEYAOIOOTTESITEAITFYUNANULTEASOESFAEQLEHIOBGLMAEORNTNUTAFNCRFFCSIRROLNBNNIHDOC | AFTER AN UNEQUIVOCAL EXPERIENCE OF THE INEFFICIENCY OF THE SUBSISTING FEDERAL GOVERNMENT YOU ARE CALLED UPON TO DELIBERATE ON A NEW CONSTITUTION FOR THE UNITED STATES OF AMERICA | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 150 | 150 | cipher_museum | 2.0 | public | null | null |
geheimschreiber-v2-0256 | UJAJVZIGVHQAOX | UJAJVZIGVHQAOX | STORM THE BREACH | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "GOTHIC"
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
red-type-a-v2-0494 | GPUFUBBIPZADFURZONQYGKICDXEHVUWXTUJIDUQFHESEPEUPEBVYFDLEOLQUBGOVOMTUREABYQFHUVOGYPETPOGTECDGYHOZDPUPESNEZYDVPIGEONRELOULUTTZOYXHXECAXTSOGZACVSOIOGFOJFQOQTAVXIRUHIPO | GPUFUBBIPZADFURZONQYGKICDXEHVUWXTUJIDUQFHESEPEUPEBVYFDLEOLQUBGOVOMTUREABYQFHUVOGYPETPOGTECDGYHOZDPUPESNEZYDVPIGEONRELOULUTTZOYXHXECAXTSOGZACVSOIOGFOJFQOQTAVXIRUHIPO | THE LORD IS MY SHEPHERD I SHALL NOT WANT HE MAKETH ME TO LIE DOWN IN GREEN PASTURES HE LEADETH ME BESIDE THE STILL WATERS HE RESTORETH MY SOUL HE LEADETH ME IN THE PATHS OF RIGHTEOUSNESS FOR HIS NAME SAKE | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "MIKADO"
} | advanced | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
tap-code-v2-0052 | . .. ... . ... .... ... .... . .... .... ... ..... .. . ..... . . .... .... . . ... ... . .... .... .... . ..... . . .... .. .... ... .... .... .. ... . ..... .... ... . ..... . . .... .. . ..... ..... .. .. ... . . .... .... .. .... ... .... .. . .. . ... | . .. ... . ... .... ... .... . .... .... ... ..... .. . ..... . . .... .... . . ... ... . .... .... .... . ..... . . .... .. .... ... .... .... .. ... . ..... .... ... . ..... . . .... .. . ..... ..... .. .. ... . . .... .... .. .... ... .... .. . .. . ... | BLOOD SWEAT AND TEARS THESE ARE WHAT I OFFER YOU FOR THE DEFENSE OF OUR ISLAND NATION | tap_code | tap_code | substitution | {
"type": "none",
"value": null
} | beginner | en | 393 | 666 | cipher_museum | 2.0 | public | null | null |
cda-0009543 | ODIYV LTDMY FIDKB MDZUY MVEKN OKMNZ OMDKS XCVFE NPENT | ODIYV LTDMY FIDKB MDZUY MVEKN OKMNZ OMDKS XCVFE NPENT | CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING | monoalphabetic | monoalphabetic | null | {
"alphabet": "MHOZKSTFEWPCRNLYGDUVXABJIQ"
} | medium | en | 45 | 45 | synthetic_educational | null | null | [] | |
confederate-vigenere-173 | DIVAYLLMEVFXVSPVXAGYIYXAWLGRZXFWHRPESRFKLXKXCIWZGHCIOYGVGMIK | DIVAYLLMEVFXVSPVXAGYIYXAWLGRZXFWHRPESRFKLXKXCIWZGHCIOYGVGMIK | LET JUSTICE BE DONE THOUGH THE HEAVENS FALL AND THE STARS GO DARK FOREVER | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "SECRET"
} | intermediate | en | 60 | 60 | cipher_museum | 0.2 | public | null | null |
beaufort-v2-0498 | OTNWUHOHONOVUGSJDADQFTVPNCIXUSPBVMDUSZIHUYTVAXZDDEGPTBOROMEXZGJUHNTVNNQWUBMBGJMABZFATDJPOBNWCRPKCZHUNJKJNFHNYOBRUMYUKDCTSEIJDNRGNOVJTOTNPKCZHUNJHUWDONBBMEBAEYXQMDJYNZNTPSPBDSDUYNMVC | OTNWUHOHONOVUGSJDADQFTVPNCIXUSPBVMDUSZIHUYTVAXZDDEGPTBOROMEXZGJUHNTVNNQWUBMBGJMABZFATDJPOBNWCRPKCZHUNJKJNFHNYOBRUMYUKDCTSEIJDNRGNOVJTOTNPKCZHUNJHUWDONBBMEBAEYXQMDJYNZNTPSPBDSDUYNMVC | THE FUNDAMENTAL PROBLEM OF COMMUNICATION IS THAT OF REPRODUCING AT ONE POINT EITHER EXACTLY OR APPROXIMATELY A MESSAGE SELECTED AT ANOTHER POINT FREQUENTLY THE MESSAGES HAVE MEANING AND REFER TO PHYSICAL CONCEPTS | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "HARBOUR"
} | intermediate | en | 181 | 181 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v2-0279 | SZYZCLMZGPLWW | SZYZCLMZGPLWW | HONOR ABOVE ALL | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "HANGUL"
} | beginner | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
cda-0016814 | YLAS LBNB QYUH SELC IKTT CYSZ ZAXO UUUE EBWP SJVN MDWX HEVL ZXMG BGJK TBEI WOUA PPSV YWUS DFIF PHEK CAHA QTML HZCI KJYV WEFB FQJB JZCZ ZXBF FBVS GIYL ESUD HHLP KOJX MPP | YLAS LBNB QYUH SELC IKTT CYSZ ZAXO UUUE EBWP SJVN MDWX HEVL ZXMG BGJK TBEI WOUA PPSV YWUS DFIF PHEK CAHA QTML HZCI KJYV WEFB FQJB JZCZ ZXBF FBVS GIYL ESUD HHLP KOJX MPP | THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH | vernam | vernam | null | {} | hard | en | 135 | 135 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
red-type-a-v2-0323 | UFLAQCMOMIXFOGLELOTOQWYSALUNOYWVOTPIQATGUNYQOYQAFNIZJOIQUTTFEHW | UFLAQCMOMIXFOGLELOTOQWYSALUNOYWVOTPIQATGUNYQOYQAFNIZJOIQUTTFEHW | IT WAS THE BEST OF TIMES IT WAS AN AGE OF WISDOM AND AN AGE OF UTTER FOOLISHNESS | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "TOKYO"
} | advanced | en | 63 | 63 | cipher_museum | 2.0 | public | null | null |
cda-0015233 | 94 14 4 27 81 3 23 2 62 2 67 39 22 26 32 60 63 14 91 50 94 76 32 39 62 50 88 72 86 2 96 39 3 22 27 43 26 99 66 99 57 11 60 33 63 11 63 33 23 58 58 22 79 93 23 86 82 81 64 58 33 63 3 26 62 14 35 49 67 66 30 59 60 92 40 82 91 60 48 3 49 99 3 48 11 22 2 34 21 88 25 88 33 66 15 64 23 53 26 61 21 26 49 99 35 93 52 22 81 87 ... | 94 14 4 27 81 3 23 2 62 2 67 39 22 26 32 60 63 14 91 50 94 76 32 39 62 50 88 72 86 2 96 39 3 22 27 43 26 99 66 99 57 11 60 33 63 11 63 33 23 58 58 22 79 93 23 86 82 81 64 58 33 63 3 26 62 14 35 49 67 66 30 59 60 92 40 82 91 60 48 3 49 99 3 48 11 22 2 34 21 88 25 88 33 66 15 64 23 53 26 61 21 26 49 99 35 93 52 22 81 87 ... | HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH THE INDEX OF COINCIDENCE IS A USEFUL CLUE GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS CERTAINLY | homophonic | homophonic | null | {} | hard | en | 171 | 171 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
cda-0020028 | AABAA ABBAA BAABA BAAAA ABBAB ABBBA BABBA ABABB AABAA AAAAA BAAAB BAABB BAAAA AABAA BAAAB BAABB ABBAA AAABA AABAA BAAAA BAABA AAAAA ABAAA ABBAA BAABA BABBA ABAAA ABBAA AAAAA AAABB ABAAA BAAAB BAABA BAAAA ABAAA AAAAB BAABB BAABA ABAAA ABBAB ABBAA BAABA AABBB AABAA ABBBA ABABA AAAAA BABBA AABAB AAAAA ABAAA BAAAA AAABA AB... | AABAA ABBAA BAABA BAAAA ABBAB ABBBA BABBA ABABB AABAA AAAAA BAAAB BAABB BAAAA AABAA BAAAB BAABB ABBAA AAABA AABAA BAAAA BAABA AAAAA ABAAA ABBAA BAABA BABBA ABAAA ABBAA AAAAA AAABB ABAAA BAAAB BAABA BAAAA ABAAA AAAAB BAABB BAABA ABAAA ABBAB ABBAA BAABA AABBB AABAA ABBBA ABABA AAAAA BABBA AABAB AAAAA ABAAA BAAAA AAABA AB... | ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY | bacon_cipher | bacon_cipher | null | {} | hard | en | 905 | 905 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
venona-pad-reuse-v2-0302 | D7KHOGKCCCKNNBNXDXMO5WZJCL46RTDWVKIWDKVSA2WWEXL4LF2PWDWKL7HJLILWCMPICCUAKS | D7KHOGKCCCKNNBNXDXMO5WZJCL46RTDWVKIWDKVSA2WWEXL4LF2PWDWKL7HJLILWCMPICCUAKS | GOOD NIGHT GOOD NIGHT PARTING IS SUCH SWEET SORROW THAT I SHALL SAY GOOD NIGHT TILL MORROW | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "FREEDOM"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v3-0304 | IQBMGTBGMQBEYAGAAESIYGJVUBEYWFYLQBARQGTEUNGTLMWLYQQBEYYPYNYUVMGKJPMBTDPTTGMNGYAYKJQYDUYKTEWRVNLUKESLMQQBBGHVYQAMNYAASGMAKGLUBYEVMGAKRYQYNPVNYBDYVYNALPNWLYPAKIQAESLYNBNKDYQGEVNSFASDQWTEYDUGJPAPC | IQBMGTBGMQBEYAGAAESIYGJVUBEYWFYLQBARQGTEUNGTLMWLYQQBEYYPYNYUVMGKJPMBTDPTTGMNGYAYKJQYDUYKTEWRVNLUKESLMQQBBGHVYQAMNYAASGMAKGLUBYEVMGAKRYQYNPVNYBDYVYNALPNWLYPAKIQAESLYNBNKDYQGEVNSFASDQWTEYDUGJPAPC | ULTRA INTELLIGENCE FROM BLETCHLEY PARK GAVE THE ALLIES AN ENORMOUS ADVANTAGE IN WORLD WAR TWO BY REVEALING GERMAN INTENTIONS BEFORE OPERATIONS BEGAN BUT THE SOURCE HAD TO BE PROTECTED AT ALL COSTS | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 193 | 193 | cipher_museum | 2.0 | public | null | null |
argenti-058 | 50 54 83 68 41 32 28 69 54 83 48 32 44 85 28 83 89 32 83 66 68 59 48 64 28 30 14 15 85 48 21 41 40 69 46 59 32 65 83 28 26 32 42 85 64 59 66 10 73 68 85 69 54 83 62 10 59 48 89 85 39 84 59 42 44 85 28 68 41 32 83 40 48 69 54 74 45 68 41 32 73 59 28 64 46 66 29 42 69 54 83 39 34 10 73 14 32 45 46 68 41 83 48 32 85 44 69... | 50 54 83 68 41 32 28 69 54 83 48 32 44 85 28 83 89 32 83 66 68 59 48 64 28 30 14 15 85 48 21 41 40 69 46 59 32 65 83 28 26 32 42 85 64 59 66 10 73 68 85 69 54 83 62 10 59 48 89 85 39 84 59 42 44 85 28 68 41 32 83 40 48 69 54 74 45 68 41 32 73 59 28 64 46 66 29 42 69 54 83 39 34 10 73 14 32 45 46 68 41 83 48 32 85 44 69... | 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 | argenti | argenti | nomenclator | {
"type": "seed",
"value": "ARGENTI"
} | expert | en | 274 | 410 | cipher_museum | 0.2 | public | null | null |
four-square-v3-0438 | QDDTCBGQDAKGLURQKLWDASFOPRWHSCFCUCSNQDITQTRBSHWUUCGNXRMUPEDASCRIQQQDOMFCBL | QDDTCBGQDAKGLURQKLWDASFOPRWHSCFCUCSNQDITQTRBSHWUUCGNXRMUPEDASCRIQQQDOMFCBL | THE THIN RED LINE STOOD FIRM AT BALACLAVA AS THE RUSSIAN CAVALRY CHARGED ACROSS THE PLAIN | four_square | four_square | polygraphic | {
"key1": "WISDOM",
"key2": "COURAGE"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v3-0265 | WWFVJLVFBCDVAJIBWKLXKMCZSQBFMVRNECQDVHVSZTBLKHKXTPVBLMEFPDMRHZXBMRVXVIZ | WWFVJLVFBCDVAJIBWKLXKMCZSQBFMVRNECQDVHVSZTBLKHKXTPVBLMEFPDMRHZXBMRVXVIZ | TO INFINITY AND BEYOND THE FRONTIER OF HUMAN KNOWLEDGE CALLS TO EACH GENERATION ANEW | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "DIXIE"
} | intermediate | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
chaocipher-v2-0080 | DVOFMWQZSVWFTENAMOTWQJEVPLXFJURULWTQVVGPIFPEZKCCJIGNSBZXVPIZDTAIZKQZXHCFLKERZG | DVOFMWQZSVWFTENAMOTWQJEVPLXFJURULWTQVVGPIFPEZKCCJIGNSBZXVPIZDTAIZKQZXHCFLKERZG | THE HEAVENS DECLARE THE GLORY OF GOD AND THE FIRMAMENT SHOWETH FORTH HIS HANDIWORK EACH NIGHT | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
one-time-pad-v2-0100 | LJDHVYMHTRDQDNHTHEAMIPHXKNRUEHWRUAAMPTZVGHUELEUMASMKUUKRRKXHVJSDQQSBYCKXJO | LJDHVYMHTRDQDNHTHEAMIPHXKNRUEHWRUAAMPTZVGHUELEUMASMKUUKRRKXHVJSDQQSBYCKXJO | LIBERTÉ ÉGALITÉ FRATERNITÉ OU LA MORT CES MOTS DÉFINISSENT LA REVOLUTION FRANÇAISE DE MIL SEPT | one_time_pad | one_time_pad | stream | {
"type": "pad",
"value": "ABCDEFGH (repeating)"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
vigenere-v2-0178 | LSEXIEDYWOEMYEKLFYVGMMUCXPLKXXZWLFVTKVANJFZLESOGUSEYISEAYGJHLVUWYCKAVWWS | LSEXIEDYWOEMYEKLFYVGMMUCXPLKXXZWLFVTKVANJFZLESOGUSEYISEAYGJHLVUWYCKAVWWS | GENERAL GRANT HAS TAKEN VICKSBURG THE GREAT RIVER IS NOW OPEN FROM ITS SOURCE TO THE SEA | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "FORTRESS"
} | intermediate | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
lorenz-v2-0514 | THEFFAROFTHELORDISTHEBEGINNINGOFWISDOMANDKNOWKEDGEOFTHEHOLYONEISUNDERSTANDING | THEFFAROFTHELORDISTHEBEGINNINGOFWISDOMANDKNOWKEDGEOFTHEHOLYONEISUNDERSTANDING | THE FEAR OF THE LORD IS THE BEGINNING OF WISDOM AND KNOWLEDGE OF THE HOLY ONE IS UNDERSTANDING | lorenz | lorenz | machine | {
"type": "seed",
"value": "STURGEON"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
hill-v2-0251 | OXKKJSDPOYUPJFBVXSAIRJFXBDDAQPPJRKNNLIBDUIIBZYNADAQPLLJFOIQERZRXSUPJNNYGHVJZDPHZBVJJJFDEDATMIBJSCTCSHMDOJSMBQOHVVGDCYSCRHJFGKAHZLMNNCTVJZCNNEDAMEUPKZEUJBEAEWTHZPCGUHVBKLCQO | OXKKJSDPOYUPJFBVXSAIRJFXBDDAQPPJRKNNLIBDUIIBZYNADAQPLLJFOIQERZRXSUPJNNYGHVJZDPHZBVJJJFDEDATMIBJSCTCSHMDOJSMBQOHVVGDCYSCRHJFGKAHZLMNNCTVJZCNNEDAMEUPKZEUJBEAEWTHZPCGUHVBKLCQO | 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 | hill | hill | polygraphic | {
"a": 5,
"b": 7,
"c": 2,
"d": 9
} | advanced | en | 172 | 172 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v2-0348 | MLSHYANMQAMNAASEYVYGTKRQPABAEVNBABDARQAKJVPGJQAUKBGEAKGDVNYNABDYGJPNGLAQVSEPUGTBGNKMLSHQYQWRQQC | MLSHYANMQAMNAASEYVYGTKRQPABAEVNBABDARQAKJVPGJQAUKBGEAKGDVNYNABDYGJPNGLAQVSEPUGTBGNKMLSHQYQWRQQC | THE ZIMMERMANN TELEGRAM WAS DECODED BY ROOM FORTY IN LONDON AND BROUGHT AMERICA INTO THE GREAT WAR | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 95 | 95 | cipher_museum | 2.0 | public | null | null |
sigaba-v2-0063 | TJVUGDERTCCKILOEGKUYOGEPGVSAZBHPFFVNIUQZFLZPQFPZAOXTJTZKMUXUCVAQIZHABXZSLP | TJVUGDERTCCKILOEGKUYOGEPGVSAZBHPFFVNIUQZFLZPQFPZAOXTJTZKMUXUCVAQIZHABXZSLP | FOR GOD SO LOVED THE WORLD THAT HE GAVE HIS ONLY SON THAT WHOEVER BELIEVES SHALL NOT PERISH | sigaba | sigaba | machine | {
"type": "seed",
"value": "ECMMARK"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0020584 | - .... . / - .-. .. - .... . -- .. ..- ... / -.-. .. .--. .... . .-. / .- -.. ...- .- -. -.-. . ... / - .... . / .- .-.. .--. .... .- -... . - / -... -.-- / --- -. . / .--. --- ... .. - .. --- -. / . .- -.-. .... / .-.. . - - . .-. / --- .--. . -. / ... --- ..- .-. -.-. . / - --- --- .-.. ... / .- .-.. .-.. --- .-- / .... | - .... . / - .-. .. - .... . -- .. ..- ... / -.-. .. .--. .... . .-. / .- -.. ...- .- -. -.-. . ... / - .... . / .- .-.. .--. .... .- -... . - / -... -.-- / --- -. . / .--. --- ... .. - .. --- -. / . .- -.-. .... / .-.. . - - . .-. / --- .--. . -. / ... --- ..- .-. -.-. . / - --- --- .-.. ... / .- .-.. .-.. --- .-- / .... | THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY HONESTLY | morse_code | morse_code | null | {} | hard | en | 204 | 204 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
cda-0017880 | ⟨w20⟩ ⟨a19⟩ ⟨a19⟩ ⟨w10⟩ ⟨a19⟩ ⟨w14⟩ ⟨w10⟩ ⟨a19⟩ ⟨a19⟩ ⟨w20⟩ ⟨w14⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨w08⟩ ⟨a07⟩ ⟨a17⟩ ⟨a17⟩ ⟨w20⟩ ⟨a25⟩ ⟨w20⟩ ⟨w14⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨w08⟩ ⟨a19⟩ ⟨w20⟩ ⟨a23⟩ ⟨w28⟩ ⟨a07⟩ ⟨a17⟩ ⟨w08⟩ ⟨w04⟩ ⟨w20⟩ ⟨a07⟩ ⟨a25⟩ ⟨w08⟩ ⟨a01⟩ ⟨a25⟩ ⟨w10⟩ ⟨w22⟩ ⟨w20⟩ ⟨w14⟩ ⟨w28⟩ ⟨a19⟩ ⟨w20⟩ ⟨w22⟩ ⟨w40⟩ ⟨w22⟩ ⟨a25⟩ ⟨w... | ⟨w20⟩ ⟨a19⟩ ⟨a19⟩ ⟨w10⟩ ⟨a19⟩ ⟨w14⟩ ⟨w10⟩ ⟨a19⟩ ⟨a19⟩ ⟨w20⟩ ⟨w14⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨w08⟩ ⟨a07⟩ ⟨a17⟩ ⟨a17⟩ ⟨w20⟩ ⟨a25⟩ ⟨w20⟩ ⟨w14⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨w08⟩ ⟨a19⟩ ⟨w20⟩ ⟨a23⟩ ⟨w28⟩ ⟨a07⟩ ⟨a17⟩ ⟨w08⟩ ⟨w04⟩ ⟨w20⟩ ⟨a07⟩ ⟨a25⟩ ⟨w08⟩ ⟨a01⟩ ⟨a25⟩ ⟨w10⟩ ⟨w22⟩ ⟨w20⟩ ⟨w14⟩ ⟨w28⟩ ⟨a19⟩ ⟨w20⟩ ⟨w22⟩ ⟨w40⟩ ⟨w22⟩ ⟨a25⟩ ⟨w... | ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER | babington | babington | null | {} | hard | en | 150 | 150 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
copiale-v2-0360 | D4 U1 V0 U9 G0 F9 M1 D0 J8 V3 A6 N2 V8 D3 V7 X4 S9 C1 W5 Q5 V8 M7 H9 Q1 F1 W6 D3 Y0 A3 O7 O9 N6 Q6 V7 D6 J4 G1 D4 J2 K5 W6 N6 A4 G3 L3 W5 U2 C7 C7 U1 S9 K8 W6 E3 P3 A4 J6 R0 O7 K2 T2 J6 I2 G2 J6 U1 U0 V4 T2 P9 T2 O7 L0 T2 V4 E3 A6 I4 U2 P3 J2 V2 R0 K5 M1 S6 Y8 N1 H3 B8 K8 V7 M7 U0 S6 N2 J9 V0 N4 N6 W9 W5 U1 B8 U9 H9 W6... | D4 U1 V0 U9 G0 F9 M1 D0 J8 V3 A6 N2 V8 D3 V7 X4 S9 C1 W5 Q5 V8 M7 H9 Q1 F1 W6 D3 Y0 A3 O7 O9 N6 Q6 V7 D6 J4 G1 D4 J2 K5 W6 N6 A4 G3 L3 W5 U2 C7 C7 U1 S9 K8 W6 E3 P3 A4 J6 R0 O7 K2 T2 J6 I2 G2 J6 U1 U0 V4 T2 P9 T2 O7 L0 T2 V4 E3 A6 I4 U2 P3 J2 V2 R0 K5 M1 S6 Y8 N1 H3 B8 K8 V7 M7 U0 S6 N2 J9 V0 N4 N6 W9 W5 U1 B8 U9 H9 W6... | WITH MALICE TOWARD NONE WITH CHARITY FOR ALL WITH FIRMNESS IN THE RIGHT AS GOD GIVES US TO SEE THE RIGHT LET US STRIVE ON TO FINISH THE WORK WE ARE IN TO BIND UP THE NATIONS WOUNDS | copiale | copiale | substitution | {
"type": "keyword",
"value": "MYSTERY"
} | advanced | en | 286 | 428 | cipher_museum | 2.0 | public | null | null |
enigma-v2-0452 | DSRFFEJWCQODSRQXMTHQCOHVKJCRRJTQLQLBINAOXWMWQHQRFFZLEPQVPVKSWCFRLYIQBIXNPXNYP | DSRFFEJWCQODSRQXMTHQCOHVKJCRRJTQLQLBINAOXWMWQHQRFFZLEPQVPVKSWCFRLYIQBIXNPXNYP | RECONNOITER THE ENEMY POSITION AND REPORT BACK BEFORE NIGHTFALL WITH A FULL STRENGTH COUNT | enigma | enigma | machine | {
"type": "rotor_start",
"value": "JKL"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
babington-v2-0054 | ⟨w20⟩ ⟨a14⟩ ⟨n04⟩ ⟨a05⟩ ⟨n04⟩ ⟨a02⟩ ⟨w16⟩ ⟨a14⟩ ⟨a09⟩ ⟨w28⟩ ⟨w34⟩ ⟨w18⟩ ⟨w28⟩ ⟨w02⟩ ⟨w28⟩ ⟨a20⟩ ⟨a02⟩ ⟨a05⟩ ⟨w26⟩ ⟨w23⟩ ⟨w28⟩ ⟨w02⟩ | ⟨w20⟩ ⟨a14⟩ ⟨n04⟩ ⟨a05⟩ ⟨n04⟩ ⟨a02⟩ ⟨w16⟩ ⟨a14⟩ ⟨a09⟩ ⟨w28⟩ ⟨w34⟩ ⟨w18⟩ ⟨w28⟩ ⟨w02⟩ ⟨w28⟩ ⟨a20⟩ ⟨a02⟩ ⟨a05⟩ ⟨w26⟩ ⟨w23⟩ ⟨w28⟩ ⟨w02⟩ | CARTHAGE MUST BE DESTROYED | babington | babington | nomenclator | {
"type": "seed",
"value": "SCOTLAND"
} | expert | en | 110 | 131 | cipher_museum | 2.0 | public | null | null |
enigma-v2-0514 | STQRBMAGUVQGMHRJERNNB | STQRBMAGUVQGMHRJERNNB | BRIDGE DESTROYED AT DAWN | enigma | enigma | machine | {
"type": "rotor_start",
"value": "MNO"
} | expert | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v2-0774 | TAAGINASYMLWI | TAAGINASYMLWI | AWAIT MY SIGNAL | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
cda-0016327 | qotedy okain ytaiin okeedy dainy sharal qokeedy qokal rcheol sheedy okal lkaiin okedy okal ytaiin oxed ctaiin otedy ytaiin qokedy kaiiin okeedy qokeedy okeedy qokeedy | qotedy okain ytaiin okeedy dainy sharal qokeedy qokal rcheol sheedy okal lkaiin okedy okal ytaiin oxed ctaiin otedy ytaiin qokedy kaiiin okeedy qokeedy okeedy qokeedy | SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | voynich_render | voynich_render | null | {} | hard | en | 142 | 142 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
vernam-v3-0170 | HOEVGALGDIIGQWKSRODNKVCFZMJDIDTRCKOADAIKOJDVEXLHABPFENMEZRBMDGOVXHZVODHNICMHRBHEQVL | HOEVGALGDIIGQWKSRODNKVCFZMJDIDTRCKOADAIKOJDVEXLHABPFENMEZRBMDGOVXHZVODHNICMHRBHEQVL | RSA ENCRYPTION RELIES ON THE MATHEMATICAL DIFFICULTY OF FACTORING THE PRODUCT OF TWO LARGE PRIMES | vernam | vernam | stream | {
"type": "pad",
"value": "QWERTY (repeating)"
} | expert | en | 83 | 83 | cipher_museum | 2.0 | public | null | null |
pigpen-004 | ┐• ┼ ┼• ├ ┼ △ ╲• ┤• ╱ ╲ ⌐ ╳ ├• ┐ ├ ┼• ┐ ┌ ┬ ╳ | ┐• ┼ ┼• ├ ┼ △ ╲• ┤• ╱ ╲ ⌐ ╳ ├• ┐ ├ ┼• ┐ ┌ ┬ ╳ | RENDEZVOUS AT MIDNIGHT | pigpen | pigpen | substitution | {
"type": "none",
"value": null
} | beginner | en | 26 | 45 | cipher_museum | 0.2 | public | null | null |
affine-v3-0694 | BLKPKNF MFPYONG IPH ONKNHZFMN LO OIN INLCNYH LYG ZFYUPARNG OILO OIN NLAOI FASPOH OIN HVY | BLKPKNF MFPYONG IPH ONKNHZFMN LO OIN INLCNYH LYG ZFYUPARNG OILO OIN NLAOI FASPOH OIN HVY | GALILEO POINTED HIS TELESCOPE AT THE HEAVENS AND CONFIRMED THAT THE EARTH ORBITS THE SUN | affine | affine | substitution | {
"a": 7,
"b": 11
} | beginner | en | 74 | 88 | cipher_museum | 2.0 | public | null | null |
cda-0015884 | ULENWWKAMEBBWTMRPTIOFVLBHZAZLRECTHNEHXDPMCXHWLAXTTOIAWMZVMBWKALVEWBDBSACTDMZZKBGIEHSGKHOGPUXMZBAWTWFJRTYCHZMAWEMJRMNKAFGGDTGFKWYXHVVROGDVPQXYCMZMXFMRRBQAWMWEXCKXKVFXQZHKCERPOYZIVSYCRPPUDEIVZARBHPXJ | ULENWWKAMEBBWTMRPTIOFVLBHZAZLRECTHNEHXDPMCXHWLAXTTOIAWMZVMBWKALVEWBDBSACTDMZZKBGIEHSGKHOGPUXMZBAWTWFJRTYCHZMAWEMJRMNKAFGGDTGFKWYXHVVROGDVPQXYCMZMXFMRRBQAWMWEXCKXKVFXQZHKCERPOYZIVSYCRPPUDEIVZARBHPXJ | THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF FAIL CLOSED IS A POSTURE NOT A SLOGAN THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER | running_key | running_key | null | {} | hard | en | 197 | 197 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
cda-0019889 | -.. --- ..- -... .-.. . / - .-. .- -. ... .--. --- ... .. - .. --- -. / .- .--. .--. .-.. .. . ... / -.-. --- .-.. ..- -- -. .- .-. / . -. -.-. .-. -.-- .--. - .. --- -. / - .-- .. -.-. . / - .... . / --- -. . / - .. -- . / .--. .- -.. / .. ... / - .... . --- .-. . - .. -.-. .- .-.. .-.. -.-- / ..- -. -... .-. . .- -.-... | -.. --- ..- -... .-.. . / - .-. .- -. ... .--. --- ... .. - .. --- -. / .- .--. .--. .-.. .. . ... / -.-. --- .-.. ..- -- -. .- .-. / . -. -.-. .-. -.-- .--. - .. --- -. / - .-- .. -.-. . / - .... . / --- -. . / - .. -- . / .--. .- -.. / .. ... / - .... . --- .-. . - .. -.-. .- .-.. .-.. -.-- / ..- -. -... .-. . .- -.-... | DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY | morse_code | morse_code | null | {} | hard | en | 103 | 103 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
great-cipher-v2-0367 | 111 174 115 152 118 158 111 126 151 114 129 152 121 179 121 168 136 176 154 160 140 119 115 143 131 132 175 111 120 134 118 100 140 170 107 106 170 125 105 109 168 160 160 131 158 114 111 101 140 138 164 154 147 163 135 100 119 174 171 158 146 173 108 177 170 112 139 142 164 118 126 154 141 111 119 180 118 126 109 129 ... | 111 174 115 152 118 158 111 126 151 114 129 152 121 179 121 168 136 176 154 160 140 119 115 143 131 132 175 111 120 134 118 100 140 170 107 106 170 125 105 109 168 160 160 131 158 114 111 101 140 138 164 154 147 163 135 100 119 174 171 158 146 173 108 177 170 112 139 142 164 118 126 154 141 111 119 180 118 126 109 129 ... | YESTERDAY DECEMBER SEVENTH NINETEEN FORTY ONE A DATE WHICH WILL LIVE IN INFAMY THE UNITED STATES OF AMERICA WAS SUDDENLY AND DELIBERATELY ATTACKED BY NAVAL AND AIR FORCES OF THE EMPIRE OF JAPAN | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "FRANCE"
} | expert | en | 360 | 479 | cipher_museum | 2.0 | public | null | null |
geez-monastic-v3-0255 | JUJZWUQHUFHYJBMQZWPPLWIKYVSPMADMAUFWUWZJYDPMGWYJYNVZZMZZJVYVCWCVQUHYMGHZUXMJYSWYUVCWSJCM | JUJZWUQHUFHYJBMQZWPPLWIKYVSPMADMAUFWUWZJYDPMGWYJYNVZZMZZJVYVCWCVQUHYMGHZUXMJYSWYUVCWSJCM | IT IS A TRUTH UNIVERSALLY ACKNOWLEDGED THAT A SINGLE MAN IN POSSESSION OF A FORTUNE MUST BE IN WANT OF A WIFE | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "LALIBELA"
} | advanced | en | 88 | 88 | cipher_museum | 2.0 | public | null | null |
hill-v3-0306 | ZMNEFBIKYHHHNUCGCTBLXCBMYHRTXFIKZHPCCAWUJXCTJWPKYFYHCALHFKJDNCGKCQWPDSTQVOPUEJMIPHWGCANNTBNCTZLFPDADJWPMXCGVYMOIGVDZHRSQNNPCECXCGVGQNNOJPQUOSREMCQWPSMLJUBCQTOPD | ZMNEFBIKYHHHNUCGCTBLXCBMYHRTXFIKZHPCCAWUJXCTJWPKYFYHCALHFKJDNCGKCQWPDSTQVOPUEJMIPHWGCANNTBNCTZLFPDADJWPMXCGVYMOIGVDZHRSQNNPCECXCGVGQNNOJPQUOSREMCQWPSMLJUBCQTOPD | 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 | hill | hill | polygraphic | {
"a": 7,
"b": 3,
"c": 4,
"d": 5
} | advanced | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
adfgx-v2-0478 | AXGGGADGDGAGAGGXAADAXDXGFFXAGDGDFXDAGDAXDD | AXGGGADGDGAGAGGXAADAXDXGFFXAGDGDFXDAGDAXDD | BRIDGE DESTROYED AT DAWN | adfgx | adfgx | fractionation | {
"polybius": "WISDOM",
"columnar": "COURAGE"
} | advanced | en | 42 | 42 | cipher_museum | 2.0 | public | null | null |
cda-0012170 | 15 42 42 34 42 13 34 42 42 15 13 44 24 34 33 11 33 14 14 15 44 15 13 44 24 34 33 11 42 15 21 45 33 14 11 32 15 33 44 11 31 44 34 43 15 13 45 42 15 43 54 43 44 15 32 43 44 23 15 51 24 22 15 33 15 42 15 13 24 35 23 15 42 45 43 15 43 11 42 15 35 15 11 44 24 33 22 25 15 54 52 34 42 14 11 32 34 14 15 31 13 11 33 13 31 11 43... | 15 42 42 34 42 13 34 42 42 15 13 44 24 34 33 11 33 14 14 15 44 15 13 44 24 34 33 11 42 15 21 45 33 14 11 32 15 33 44 11 31 44 34 43 15 13 45 42 15 43 54 43 44 15 32 43 44 23 15 51 24 22 15 33 15 42 15 13 24 35 23 15 42 45 43 15 43 11 42 15 35 15 11 44 24 33 22 25 15 54 52 34 42 14 11 32 34 14 15 31 13 11 33 13 31 11 43... | ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS THE VIGENERE CIPHER USES A REPEATING KEYWORD A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG | polybius | polybius | null | {} | hard | en | 138 | 138 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
chaocipher-v3-0180 | FXPMPXFDQXUAMABMTIPVZTNXQMNAMLBWBLPZKDSEMNYJEYGJAJDHOFKQUHHVVNHFQZKIRTFHJR | FXPMPXFDQXUAMABMTIPVZTNXQMNAMLBWBLPZKDSEMNYJEYGJAJDHOFKQUHHVVNHFQZKIRTFHJR | WHAT DOES IT PROFIT A MAN TO GAIN THE WHOLE WORLD AND YET LOSE HIS OWN IMMORTAL SOUL FOREVER | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0014269 | VMQXMOMGEGDDQOTELCJHVGDPYIHIMLCREUKVTPFEQVOVXEEQUHFZSGVRCGSXUYVREGWCVDZIQYVEAREUEMGKMORQN | VMQXMOMGEGDDQOTELCJHVGDPYIHIMLCREUKVTPFEQVOVXEEQUHFZSGVRCGSXUYVREGWCVDZIQYVEAREUEMGKMORQN | DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION | one_time_pad | one_time_pad | null | {} | hard | en | 89 | 89 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
caesar-vj-0085 | DRO VYBN BOSQXC PYBOFOB | DRO VYBN BOSQXC PYBOFOB | THE LORD REIGNS FOREVER | caesar | caesar | substitution | {
"type": "shift",
"value": 10
} | beginner | en | 20 | 23 | cipher_museum | 2.0 | public | null | null |
vigenere-v3-1418 | ISHVRGPUVYIMGROOLTHKHVCNYEYICHBIOAKJUYFRMMCQOKTORIOMZXZCOWFVWOHGDUKHUJTICE | ISHVRGPUVYIMGROOLTHKHVCNYEYICHBIOAKJUYFRMMCQOKTORIOMZXZCOWFVWOHGDUKHUJTICE | GENERAL SHERMAN MARCHED TO THE SEA THROUGH GEORGIA CUTTING A SIXTY MILE WIDE PATH OF RUIN | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "COURAGE"
} | intermediate | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
trifid-174 | RTSWK+IYVNXRGC+CSAIGRSXTUJYDEUOMGSPFS+BCAR+LAJZDM+GGFGUSSUULEE | RTSWK+IYVNXRGC+CSAIGRSXTUJYDEUOMGSPFS+BCAR+LAJZDM+GGFGUSSUULEE | THE ENEMY KNOWS THE SYSTEM DESIGN YOUR CIPHER ACCORDINGLY WITH GREAT CARE | trifid | trifid | fractionation | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 62 | 62 | cipher_museum | 0.2 | public | null | null |
alberti-disk-v2-0194 | DIVOMFVDMUAHGOBNTRLIHFZYINBCQIFCKTMMDJJKYJSBQRZKVVPKJVLUAOEOKLMDPXNGHLEFFYRS | DIVOMFVDMUAHGOBNTRLIHFZYINBCQIFCKTMMDJJKYJSBQRZKVVPKJVLUAOEOKLMDPXNGHLEFFYRS | BLESSED ARE THE PURE IN HEART FOR THEY SHALL SEE GOD AND BLESSED ARE THE PEACEMAKERS AMONG US | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 5
} | expert | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
rail-fence-v2-0378 | WUDRIDICMLEREENREEFLSEOLTEOOOEFHBETTHIORPEBHRMIYHMRTWATLBYHTTNTECAJUEUPTMPELREEIEFEIORTTUSSQRROETAERSLPODSFOUSSNTNOONSHRAUSFEESEOMNETIIAVFDNEENCIOOLTTRAINIECRIEEEGNDENSPAMOCTDFESG | WUDRIDICMLEREENREEFLSEOLTEOOOEFHBETTHIORPEBHRMIYHMRTWATLBYHTTNTECAJUEUPTMPELREEIEFEIORTTUSSQRROETAERSLPODSFOUSSNTNOONSHRAUSFEESEOMNETIIAVFDNEENCIOOLTTRAINIECRIEEEGNDENSPAMOCTDFESG | 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 | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 9
} | intermediate | en | 179 | 179 | cipher_museum | 2.0 | public | null | null |
typex-v3-0351 | ESVCNLXAUFZEJWZEOFHKV | ESVCNLXAUFZEJWZEOFHKV | THE EXPERIMENT CONFIRMS | typex | typex | machine | {
"type": "keyword",
"value": "WINSTON"
} | expert | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
cda-0015171 | 21 42 24 15 14 32 11 33 15 43 44 24 32 11 44 15 14 25 15 54 31 15 33 22 44 23 21 42 34 32 43 44 11 44 24 43 44 24 13 43 21 42 15 41 45 15 33 13 54 11 33 11 31 54 43 24 43 13 11 33 42 15 51 15 11 31 52 15 11 25 13 24 35 23 15 42 43 11 44 42 11 33 43 35 11 42 15 33 44 44 34 34 31 43 23 34 45 31 14 43 23 34 52 24 44 43 42... | 21 42 24 15 14 32 11 33 15 43 44 24 32 11 44 15 14 25 15 54 31 15 33 22 44 23 21 42 34 32 43 44 11 44 24 43 44 24 13 43 21 42 15 41 45 15 33 13 54 11 33 11 31 54 43 24 43 13 11 33 42 15 51 15 11 31 52 15 11 25 13 24 35 23 15 42 43 11 44 42 11 33 43 35 11 42 15 33 44 44 34 34 31 43 23 34 45 31 14 43 23 34 52 24 44 43 42... | FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS A TRANSPARENT TOOL SHOULD SHOW ITS REASONING PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN | polybius | polybius | null | {} | hard | en | 156 | 156 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
playfair-v3-0587 | RPNHFEASPIOCHNASTUQE | RPNHFEASPIOCHNASTUQE | THE REDCOATS ARE COMING | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "TRIUMPH"
} | intermediate | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
purple-v2-0225 | MJNUITHRVOFDGTCCAQUGSGYMEADTABABJKLTIMNJAHRFHRCAZLNWLJZMRRUTBTNFCGLRHBMLL | MJNUITHRVOFDGTCCAQUGSGYMEADTABABJKLTIMNJAHRFHRCAZLNWLJZMRRUTBTNFCGLRHBMLL | ALEA IACTA EST ET CAESAR RUBICONE TRANSGRESSO BELLUM CIVILE INCIPIT PER TOTAM ROMANAM | purple | purple | machine | {
"type": "seed",
"value": "YAMAMOTO"
} | expert | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
typex-v3-0015 | KTQTPQWHWQVPYK | KTQTPQWHWQVPYK | THE SIEGE BEGINS | typex | typex | machine | {
"type": "keyword",
"value": "LONDON"
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
kryha-089 | LUJAPXUNEYBLNJRB | LUJAPXUNEYBLNJRB | LOCK DOWN ALL GATES | kryha | kryha | machine | {
"type": "keyword",
"value": "CIPHER"
} | expert | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
morse-code-v3-0027 | - .... . / -.-. --- -- .--. .- ... ... / .--. --- .. -. - ... / - .-. ..- . | - .... . / -.-. --- -- .--. .- ... ... / .--. --- .. -. - ... / - .-. ..- . | THE COMPASS POINTS TRUE | morse_code | morse_code | encoding | {
"type": "none",
"value": null
} | beginner | en | 53 | 75 | cipher_museum | 2.0 | public | null | null |
cda-0009804 | WUBEA OIGPO WDPIE OQDRQ LKPGC ACOXN UREZS JJQ | WUBEA OIGPO WDPIE OQDRQ LKPGC ACOXN UREZS JJQ | GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS | beaufort | beaufort | null | {
"key": "CIPHER"
} | medium | en | 38 | 38 | synthetic_educational | null | null | [] | |
rail-fence-v3-0170 | GMAAMRENAETICYIFUNARSHGUTLOIEMCERRTXEHNRRHHOOTIWTAEETUEISIALHDOGGNADPSTHGE | GMAAMRENAETICYIFUNARSHGUTLOIEMCERRTXEHNRRHHOOTIWTAEETUEISIALHDOGGNADPSTHGE | GENERAL SHERMAN MARCHED TO THE SEA THROUGH GEORGIA CUTTING A SIXTY MILE WIDE PATH OF RUIN | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 8
} | intermediate | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v3-0018 | OJDQCSLDJIOFFSLFCWOBCX | OJDQCSLDJIOFFSLFCWOBCX | TREACHERY IN THE COURT | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
caesar-v3-1051 | QLU CQHYQ WHQJYQ FBUDQ | QLU CQHYQ WHQJYQ FBUDQ | AVE MARIA GRATIA PLENA | caesar | caesar | substitution | {
"type": "shift",
"value": 16
} | beginner | en | 19 | 22 | cipher_museum | 2.0 | public | null | null |
four-square-v2-0480 | KEQQCLFUSUGLFMBSEUSY | KEQQCLFUSUGLFMBSEUSY | MISSION ACCOMPLISHED | four_square | four_square | polygraphic | {
"key1": "WISDOM",
"key2": "COURAGE"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
stager-route-v3-0307 | SIELRDBHONANGRYENFNUOPOFEETTIUEOCVNFHHGAORPWIPONIRHDLRANDIALEEERADXIITNMENOEEITAXWLDDACSISWVSATTEHMNIIWSOECGWOOXXMSEEHTWSISNOIASBTNTGDTINHTHSOIXXLPTAOIIOHOAWETELHDONMTNGSKSEHLX | SIELRDBHONANGRYENFNUOPOFEETTIUEOCVNFHHGAORPWIPONIRHDLRANDIALEEERADXIITNMENOEEITAXWLDDACSISWVSATTEHMNIIWSOECGWOOXXMSEEHTWSISNOIASBTNTGDTINHTHSOIXXLPTAOIIOHOAWETELHDONMTNGSKSEHLX | SOCRATES BELIEVED THAT THE UNEXAMINED LIFE IS NOT WORTH LIVING AND THAT WISDOM BEGINS WITH THE ADMISSION OF ONES OWN IGNORANCE THIS APPROACH TO KNOWLEDGE HAS GUIDED WESTERN PHILOSOPHY FOR TWO MILLENNIA | stager_route | stager_route | transposition | {
"type": "integer",
"value": 11
} | expert | en | 176 | 176 | cipher_museum | 2.0 | public | null | null |
chaocipher-v3-0166 | PXKHNBIACSJQVORUEVOOIQNALIFXXXIAAULRYINLRZWWQXUAMEENCHRDHVELXHMMXSIUQMLTC | PXKHNBIACSJQVORUEVOOIQNALIFXXXIAAULRYINLRZWWQXUAMEENCHRDHVELXHMMXSIUQMLTC | THE BATTLE OF BRITAIN RAGED IN THE SKIES ABOVE ENGLAND FOR FOUR MONTHS IN NINETEEN FORTY | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
cda-0006603 | SXTU EWPT IEAL IOFP FAHI ZOKO CQTW KYSW AHFZ RGVC AWGI RBSI LGCO KOKG OUNI FYIM PSAY ZRWX VQE | SXTU EWPT IEAL IOFP FAHI ZOKO CQTW KYSW AHFZ RGVC AWGI RBSI LGCO KOKG OUNI FYIM PSAY ZRWX VQE | A TRANSPARENT TOOL SHOULD SHOW ITS REASONING DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION | autokey | autokey | null | {
"primer": "SECURE"
} | medium | en | 75 | 75 | synthetic_educational | null | null | [
"running_key_analysis",
"index_of_coincidence"
] | Autokey: Vigenère where the plaintext extends the key — harder to Kasiski-attack. |
copiale-v3-0040 | O3 X7 K7 R1 K6 A4 | O3 X7 K7 R1 K6 A4 | EUREKA | copiale | copiale | substitution | {
"type": "keyword",
"value": "MASONIC"
} | advanced | en | 12 | 17 | cipher_museum | 2.0 | public | null | null |
beaufort-v3-0215 | ODVGKHXFVKPDJN | ODVGKHXFVKPDJN | MARCH TO VICTORY | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "ADMIRAL"
} | intermediate | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
m94-v2-0226 | XUGZZGOURYQWKP | XUGZZGOURYQWKP | PRESS THE ATTACK | m94 | m94 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
geez-monastic-v2-0308 | JKYVSYVUSFWUIVHQZMVUFMQZGWLUWKMXHUWZCVQGMDJBMGMPJXMQULVQDJBMGMAMWUF | JKYVSYVUSFWUIVHQZMVUFMQZGWLUWKMXHUWZCVQGMDJBMGMPJXMQULVQDJBMGMAMWUF | I KNOW NOT WHAT COURSE OTHERS MAY TAKE BUT AS FOR ME GIVE ME LIBERTY OR GIVE ME DEATH | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "LALIBELA"
} | advanced | en | 67 | 67 | cipher_museum | 2.0 | public | null | null |
chaocipher-v2-0568 | GGTMCDZHXLMERWCFDFFGYXMNCLKJDAIFERYIMVQZNLKDSJHTFIGOOIQXNARIVIZOWDCRZLSAVJJ | GGTMCDZHXLMERWCFDFFGYXMNCLKJDAIFERYIMVQZNLKDSJHTFIGOOIQXNARIVIZOWDCRZLSAVJJ | TRUST IN THE LORD WITH ALL THINE HEART AND LEAN NOT UNTO THINE OWN UNDERSTANDING IN ALL WAYS | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
bifid-v2-0200 | KEGBEGGMXATHACGFNRKHNXATXRTOTOGHPRNFLVFIOCADZEBNDNGWROWSXDTBSAWGWOKAYNXSXEYGCZNBNZF | KEGBEGGMXATHACGFNRKHNXATXRTOTOGHPRNFLVFIOCADZEBNDNGWROWSXDTBSAWGWOKAYNXSXEYGCZNBNZF | KNOWLEDGE WITHOUT WISDOM IS A DANGEROUS THING AND WISDOM WITHOUT COURAGE IS ULTIMATELY WORTHLESS | bifid | bifid | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 83 | 83 | cipher_museum | 2.0 | public | null | null |
cda-0007188 | TTIRELTIESEHIENMAOPTNCEVSSAIRHEOTDEPBKMIEATIESAEISCRCPOTTTFNHASHRNEUTOGILAEOXCDERCSCRRTX | TTIRELTIESEHIENMAOPTNCEVSSAIRHEOTDEPBKMIEATIESAEISCRCPOTTTFNHASHRNEUTOGILAEOXCDERCSCRRTX | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION | scytale | scytale | null | {
"cols": 8
} | hard | en | 88 | 88 | synthetic_educational | null | null | [] | |
stager-route-v2-0473 | TKBTNHATIAAYWHEALAITHUESLESCIIOBSCMATAENNPHVBRNANINCTAEERNTIEDSTGAATTDIEIRRRXXECESDS | TKBTNHATIAAYWHEALAITHUESLESCIIOBSCMATAENNPHVBRNANINCTAEERNTIEDSTGAATTDIEIRRRXXECESDS | THE CIPHER DISK WAS INVENTED BY LEON BATTISTA ALBERTI A RENAISSANCE ARCHITECT AND GREAT HUMANIST | stager_route | stager_route | transposition | {
"type": "integer",
"value": 12
} | expert | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
four-square-v3-0122 | PCBOGLFOPSKNALPTOTSO | PCBOGLFOPSKNALPTOTSO | THE COMPASS POINTS TRUE | four_square | four_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v3-0100 | UDDYXILE WYXQ BVCBCZLM QGYQ KL ZGCIEM YOQ CXEA YOOCVMUXH QC QGYQ DYNUD PA KGUOG KL OYX YQ QGL ZYDL QUDL KUEE QGYQ UQ ZGCIEM PLOCDL Y IXURLVZYE EYK QGUZ OYQLHCVUOYE UDBLVYQURL MLJUXLZ DCVYE MIQA | UDDYXILE WYXQ BVCBCZLM QGYQ KL ZGCIEM YOQ CXEA YOOCVMUXH QC QGYQ DYNUD PA KGUOG KL OYX YQ QGL ZYDL QUDL KUEE QGYQ UQ ZGCIEM PLOCDL Y IXURLVZYE EYK QGUZ OYQLHCVUOYE UDBLVYQURL MLJUXLZ DCVYE MIQA | IMMANUEL KANT PROPOSED THAT WE SHOULD ACT ONLY ACCORDING TO THAT MAXIM BY WHICH WE CAN AT THE SAME TIME WILL THAT IT SHOULD BECOME A UNIVERSAL LAW THIS CATEGORICAL IMPERATIVE DEFINES MORAL DUTY | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "SANSKRIT"
} | intermediate | en | 160 | 193 | cipher_museum | 2.0 | public | null | null |
wheatstone-v3-0282 | TLUKSLLSDAPQBQYLUWLUHTDBVASDAJTLUKSLYLUSDEQEQSDACLHTAKPUHALNBHHPAHECELKQ | TLUKSLLSDAPQBQYLUWLUHTDBVASDAJTLUKSLYLUSDEQEQSDACLHTAKPUHALNBHHPAHECELKQ | DO UNTO OTHERS AS YOU WOULD HAVE THEM DO UNTO YOU THIS IS THE GOLDEN RULE OF ALL RELIGIONS | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "BRITAIN"
} | advanced | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
commercial-code-v2-0043 | ZUZUZ CAZUZ WAZUZ GAZUZ CEZUZ LAZUZ ZAZUZ GEZUZ XUZUZ HABAB BABAB ZUZUZ XAZUZ SAZUZ BEZUZ PAZUZ XUZUZ CABAB ZUZUZ DEZUZ LAZUZ ZAZUZ XUZUZ DABAB ZUZUZ ZAZUZ GAZUZ FAZUZ LAZUZ SAZUZ BEZUZ XAZUZ RAZUZ GAZUZ XAZUZ XAZUZ XUZUZ BABAB ZUZUZ SAZUZ BEZUZ ZAZUZ DEZUZ BAZUZ WAZUZ FAZUZ XUZUZ ZUZUZ HAZUZ PAZUZ SAZUZ BEZUZ WAZUZ LA... | ZUZUZ CAZUZ WAZUZ GAZUZ CEZUZ LAZUZ ZAZUZ GEZUZ XUZUZ HABAB BABAB ZUZUZ XAZUZ SAZUZ BEZUZ PAZUZ XUZUZ CABAB ZUZUZ DEZUZ LAZUZ ZAZUZ XUZUZ DABAB ZUZUZ ZAZUZ GAZUZ FAZUZ LAZUZ SAZUZ BEZUZ XAZUZ RAZUZ GAZUZ XAZUZ XAZUZ XUZUZ BABAB ZUZUZ SAZUZ BEZUZ ZAZUZ DEZUZ BAZUZ WAZUZ FAZUZ XUZUZ ZUZUZ HAZUZ PAZUZ SAZUZ BEZUZ WAZUZ LA... | BREVITY IS THE SOUL OF WIT AND TEDIOUSNESS THE OUTWARD FLOURISHES | commercial_code | commercial_code | codebook | {
"type": "none",
"value": null
} | expert | en | 295 | 353 | cipher_museum | 2.0 | public | null | null |
caesar-vj-0075 | BPM TWZL ZMQOVA NWZMDMZ | BPM TWZL ZMQOVA NWZMDMZ | THE LORD REIGNS FOREVER | caesar | caesar | substitution | {
"type": "shift",
"value": 8
} | beginner | en | 20 | 23 | cipher_museum | 2.0 | public | null | null |
jn25-089 | 37193 37196 37184 37192 37185 37196 37104 37195 37182 37193 37193 37188 37182 37191 37186 37190 | 37193 37196 37184 37192 37185 37196 37104 37195 37182 37193 37193 37188 37182 37191 37186 37190 | LOCK DOWN ALL GATES | jn25 | jn25 | codebook | {
"type": "additive",
"value": "27182"
} | expert | en | 80 | 95 | cipher_museum | 0.2 | public | null | null |
cda-0009053 | ZBQRE ARAPE LCGVB AVFAB GOEBX RAOLY RGGRE SERDH RAPLC BYLNY CUNOR GVPPV CUREF HFRZH YGVCY RNYCU NORGF UVSGF GUROR FGYRF FBAFF UBJJU RERGU RZRGU BQSNV YFVAQ RKBSP BVAPV QRAPR ZRNFH ERFYR GGRES ERDHR APLQV FGEVO HGVBA | ZBQRE ARAPE LCGVB AVFAB GOEBX RAOLY RGGRE SERDH RAPLC BYLNY CUNOR GVPPV CUREF HFRZH YGVCY RNYCU NORGF UVSGF GUROR FGYRF FBAFF UBJJU RERGU RZRGU BQSNV YFVAQ RKBSP BVAPV QRAPR ZRNFH ERFYR GGRES ERDHR APLQV FGEVO HGVBA | MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS THE BEST LESSONS SHOW WHERE THE METHOD FAILS INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 180 | 180 | synthetic_educational | null | null | [] | |
great-cipher-v2-0101 | 116 151 167 172 113 141 128 174 151 166 158 139 137 102 146 129 116 152 138 133 178 141 167 133 106 140 120 172 150 178 167 172 115 151 172 113 151 167 115 151 104 166 167 138 152 151 167 115 178 161 136 166 138 116 138 107 166 113 115 151 172 154 165 177 143 173 141 167 | 116 151 167 172 113 141 128 174 151 166 158 139 137 102 146 129 116 152 138 133 178 141 167 133 106 140 120 172 150 178 167 172 115 151 172 113 151 167 115 151 104 166 167 138 152 151 167 115 178 161 136 166 138 116 138 107 166 113 115 151 172 154 165 177 143 173 141 167 | DEUTSCHLAND UBER ALLES IN DER WELT WENN ES STETS ZU SCHUTZ UND TRUTZE BRÜDERLICH ZUSAMMENHÄLT | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "VERSAILLES"
} | expert | en | 204 | 271 | cipher_museum | 2.0 | public | null | null |
autokey-v2-0075 | IHPRGKBTIEXYPMPYTVCAYNEDOFVTWTENOYLLFXVVKLYSQMRKXLMJEIRWYELVCOFMLVRFDTRBGTOAL | IHPRGKBTIEXYPMPYTVCAYNEDOFVTWTENOYLLFXVVKLYSQMRKXLMJEIRWYELVCOFMLVRFDTRBGTOAL | THE REGIMENT SHALL ADVANCE AT FIRST LIGHT SUPPORTED BY ARTILLERY ON THE EASTERN FLANK TODAY | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "PALACE"
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
porta-v3-0462 | EZYNPVKMMEJMTID | EZYNPVKMMEJMTID | THE FACTORY ROARS | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "FLORENT"
} | intermediate | en | 15 | 15 | cipher_museum | 2.0 | public | null | null |
chaocipher-v3-0486 | TQGGEOZZXBNMCYNMMZAZHZJXPZHCDVSGKEZGUIKPWKDWHJMCSRMANRYRRPGMVZXRMAOCFRYVHM | TQGGEOZZXBNMCYNMMZAZHZJXPZHCDVSGKEZGUIKPWKDWHJMCSRMANRYRRPGMVZXRMAOCFRYVHM | GALILEO POINTED HIS TELESCOPE AT THE HEAVENS AND CONFIRMED THAT THE EARTH ORBITS THE SUN | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
morse-code-v2-0091 | - .... . / ... . -.-. .-. . - / .-.. .. . ... / -... ..- .-. .. . -.. / -... . -. . .- - .... / - .... . / - .... .. .-. -.. / ..-. .-.. .- --. ... - --- -. . / --- ..-. / - .... . / --- .-.. -.. / -.-. .... ..- .-. -.-. .... / -.-. --- ..- .-. - -.-- .- .-. -.. / .- - / -.. .- .-- -. / - --- -- --- .-. .-. --- .-- | - .... . / ... . -.-. .-. . - / .-.. .. . ... / -... ..- .-. .. . -.. / -... . -. . .- - .... / - .... . / - .... .. .-. -.. / ..-. .-.. .- --. ... - --- -. . / --- ..-. / - .... . / --- .-.. -.. / -.-. .... ..- .-. -.-. .... / -.-. --- ..- .-. - -.-- .- .-. -.. / .- - / -.. .- .-- -. / - --- -- --- .-. .-. --- .-- | THE SECRET LIES BURIED BENEATH THE THIRD FLAGSTONE OF THE OLD CHURCH COURTYARD AT DAWN TOMORROW | morse_code | morse_code | encoding | {
"type": "none",
"value": null
} | beginner | en | 222 | 316 | cipher_museum | 2.0 | public | null | null |
cda-0004831 | GUR ORFG YRFFBAF FUBJ JURER GUR ZRGUBQ SNVYF UVFGBEVPNY PVCUREF NER GRNPUREF ABG CEBGRPGVBA PBYHZANE GENAFCBFVGVBA ERNQF PBYHZAF VA XRL BEQRE | GUR ORFG YRFFBAF FUBJ JURER GUR ZRGUBQ SNVYF UVFGBEVPNY PVCUREF NER GRNPUREF ABG CEBGRPGVBA PBYHZANE GENAFCBFVGVBA ERNQF PBYHZAF VA XRL BEQRE | THE BEST LESSONS SHOW WHERE THE METHOD FAILS HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 121 | 121 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
joseon-yeokhak-v2-0350 | WLWTMPCEPRFTOLYEWPAPFAWPGPCDFYLGPYTCXPTWWPFCPEAWFDUFDEPAZFCEZFDWPDSZXXPDWTMCPD | WLWTMPCEPRFTOLYEWPAPFAWPGPCDFYLGPYTCXPTWWPFCPEAWFDUFDEPAZFCEZFDWPDSZXXPDWTMCPD | LA LIBERTE GUIDANT LE PEUPLE VERS UN AVENIR MEILLEUR ET PLUS JUSTE POUR TOUS LES HOMMES LIBRES | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "HANGUL"
} | beginner | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
nihilist-v3-0241 | 24 66 88 23 56 48 63 58 45 58 62 45 37 66 45 45 58 53 36 79 64 54 55 88 63 65 68 75 44 37 87 42 58 68 44 25 68 58 36 56 39 73 44 56 88 22 24 37 55 64 46 86 35 56 36 54 36 56 76 35 45 68 74 45 25 57 34 64 57 73 45 26 | 24 66 88 23 56 48 63 58 45 58 62 45 37 66 45 45 58 53 36 79 64 54 55 88 63 65 68 75 44 37 87 42 58 68 44 25 68 58 36 56 39 73 44 56 88 22 24 37 55 64 46 86 35 56 36 54 36 56 76 35 45 68 74 45 25 57 34 64 57 73 45 26 | TWO ROADS DIVERGED IN A YELLOW WOOD AND SORRY I COULD NOT TRAVEL BOTH AND BE ONE TRAVELER | nihilist | nihilist | fractionation | {
"polybius": "TRIUMPH",
"keyword": "JUSTICE"
} | advanced | en | 144 | 215 | cipher_museum | 2.0 | public | null | null |
cda-0015014 | CXAE IVLV EQEA IDEL SHNX FDBE LGJK AOAY QJSL LDYK SHJO ZOAY QNUK UGRJ HPIE EHJW THZH RVGK OWAQ RIJQ FZDZ LRML LKCT MLGB YHWA ILLY XCYN FEWP FIBR LJMI XGQW GVHT YVIB IXJY LGEU CWFQ FAHB ZUP | CXAE IVLV EQEA IDEL SHNX FDBE LGJK AOAY QJSL LDYK SHJO ZOAY QNUK UGRJ HPIE EHJW THZH RVGK OWAQ RIJQ FZDZ LRML LKCT MLGB YHWA ILLY XCYN FEWP FIBR LJMI XGQW GVHT YVIB IXJY LGEU CWFQ FAHB ZUP | PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH THE MESSAGE WAS HIDDEN BUT NOT SECURE THE BEST LESSONS SHOW WHERE THE METHOD FAILS OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE | one_time_pad | one_time_pad | null | {} | hard | en | 151 | 151 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
cda-0014538 | .. .. .... .. ... .... ... ... .... ... .. . . ..... ... . . .... .... ..... .... ... . ..... .... ... . . . .... .. .... .. .. .. .... .... .... .... ... . ..... .... . .... ..... . ..... ... ... . ... . ..... . . .... ... .... .... .. ... . ..... .... .. . ..... ... ..... . ..... .... | .. .. .... .. ... .... ... ... .... ... .. . . ..... ... . . .... .... ..... .... ... . ..... .... ... . . . .... .. .... .. .. .. .... .... .... .... ... . ..... .... . .... ..... . ..... ... ... . ... . ..... . . .... ... .... .... .. ... . ..... .... .. . ..... ... ..... . ..... .... | GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY | tap_code | tap_code | null | {} | medium | en | 44 | 44 | 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. |
kama-sutra-v3-0242 | KMX ZGKYFZXTF QKMXF | KMX ZGKYFZXTF QKMXF | OLD IRONSIDES HOLDS | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "INDIA"
} | intermediate | en | 17 | 19 | cipher_museum | 2.0 | public | null | null |
chaocipher-v2-0081 | LROOPEGYMTBFPNSZBINFGUSVOWYCMXVJKPHYGUFHDMLZGQYDIPDBKKKDFRRMAOWLYAIIGPHBNVROQUZVD | LROOPEGYMTBFPNSZBINFGUSVOWYCMXVJKPHYGUFHDMLZGQYDIPDBKKKDFRRMAOWLYAIIGPHBNVROQUZVD | OBSERVATION EXPERIMENT AND REASON ARE THE THREE PILLARS OF ALL SCIENTIFIC INQUIRY AND PROGRESS | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
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