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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
caesar-346 | JSYV WGSVI ERH WIZIR CIEVW EKS SYV JEXLIVW FVSYKLX JSVXL XLMW REXMSR | JSYV WGSVI ERH WIZIR CIEVW EKS SYV JEXLIVW FVSYKLX JSVXL XLMW REXMSR | FOUR SCORE AND SEVEN YEARS AGO OUR FATHERS BROUGHT FORTH THIS NATION | caesar | caesar | substitution | {
"type": "shift",
"value": 4
} | beginner | en | 57 | 68 | cipher_museum | 0.2 | public | null | null |
fialka-v3-0249 | OISJGCJXNIOSJZXRCXMRC | OISJGCJXNIOSJZXRCXMRC | THE TELEGRAPH TRANSMITS | fialka | fialka | machine | {
"type": "seed",
"value": "SOVIET"
} | expert | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
rail-fence-v3-0600 | HNROUECESSUMGEPONRIIGNNACNLAOAMETLTSLUSOEHECHIRTEIODNDHNRLNNTLUIIETAHEMNNRATEIAGCF | HNROUECESSUMGEPONRIIGNNACNLAOAMETLTSLUSOEHECHIRTEIODNDHNRLNNTLUIIETAHEMNNRATEIAGCF | HUMINT OR HUMAN INTELLIGENCE GATHERING RELIES ON PERSONAL CONTACT AND HUMAN SOURCES IN THE FIELD | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 12
} | intermediate | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
cda-0006472 | RVSTWR OAQ VSYYZOA WAGEBRHNSQ CHPYWN XSL NELCGBTEOCVL VA AVASGSRA FSISAGL FVK GUS OHGBXSL NWCUSE RKGRARF GUR YSL JVGV GUS CYOWAGRKG WGFRYT | RVSTWR OAQ VSYYZOA WAGEBRHNSQ CHPYWN XSL NELCGBTEOCVL VA AVASGSRA FSISAGL FVK GUS OHGBXSL NWCUSE RKGRARF GUR YSL JVGV GUS CYOWAGRKG WGFRYT | DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF | porta | porta | null | {
"key": "SECURE"
} | hard | en | 118 | 118 | synthetic_educational | null | null | [
"kasiski_examination",
"index_of_coincidence"
] | Porta: 13-row table polyalphabetic cipher; reciprocal (encrypt = decrypt). |
kryha-v2-0212 | CNEUXMIWNVTMSNPIEIJHZQBTBEVYXDRKWSEQFIJYCSUGUIULSDCXLYJMVYAPRXLFDDULQRBKLDEQYJC | CNEUXMIWNVTMSNPIEIJHZQBTBEVYXDRKWSEQFIJYCSUGUIULSDCXLYJMVYAPRXLFDDULQRBKLDEQYJC | THE KASISKI TEST FINDS REPEATED SEQUENCES TO DETERMINE THE KEY LENGTH OF A VIGENERE CIPHER KEY | kryha | kryha | machine | {
"type": "keyword",
"value": "VIENNA"
} | expert | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
fialka-v2-0396 | TTKSVIQVBUADI | TTKSVIQVBUADI | AWAIT MY SIGNAL | fialka | fialka | machine | {
"type": "seed",
"value": "SPUTNIK"
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
sigaba-v3-0319 | LHHCSETZTSJLBD | LHHCSETZTSJLBD | MARCH TO VICTORY | sigaba | sigaba | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-276 | IPAEWCAQMKPQYEOALYLMGAMBYIPAEWCAVSGIGEQMKKBBLQAQYFLHQYIFLQAY | IPAEWCAQMKPQYEOALYLMGAMBYIPAEWCAVSGIGEQMKKBBLQAQYFLHQYIFLQAY | ALL THE WORLDS A STAGE AND ALL THE MEN AND WOMEN MERELY PLAYERS | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "CRYPTIC"
} | advanced | en | 60 | 60 | cipher_museum | 0.2 | public | null | null |
enigma-v2-0478 | UFMCKYBHJOFMJJOSDCOGPSLYDQCNBQADLVLWKRBKQFSQRBSJTGFPIDFIZOTBJPCTWRIBL | UFMCKYBHJOFMJJOSDCOGPSLYDQCNBQADLVLWKRBKQFSQRBSJTGFPIDFIZOTBJPCTWRIBL | LA VIDA ES SUENO Y LOS SUENOS SUENOS SON PARA TODOS LOS QUE VIVEN BAJO EL CIELO ETERNO | enigma | enigma | machine | {
"type": "rotor_start",
"value": "JKL"
} | expert | en | 69 | 69 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-de-022 | INUNSMDHKASCLMDTVNESOEEEE | INUNSMDHKASCLMDTVNESOEEEE | IM NAMEN DES DEUTSCHEN VOLKES | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | de | 25 | 25 | cipher_museum | 0.2 | public | null | null |
cda-0005564 | BIDCUXEVLZEEXJCJTAMTUCHLQLDNATXYLEXWLFEEHOIGXLUVTZFFCFELMASGHJIGADBJMTLGPFPUPFUWYEQLGZQOVRKFVULTNSUYJHVVGVRYCGXFFZEGTHKACZTWAOKXHSRXWJGLJQPUTEEHIRVXXXPIWXATFBUSJZPGZSAEFARILLWEMIGKHMCPT | BIDCUXEVLZEEXJCJTAMTUCHLQLDNATXYLEXWLFEEHOIGXLUVTZFFCFELMASGHJIGADBJMTLGPFPUPFUWYEQLGZQOVRKFVULTNSUYJHVVGVRYCGXFFZEGTHKACZTWAOKXHSRXWJGLJQPUTEEHIRVXXXPIWXATFBUSJZPGZSAEFARILLWEMIGKHMCPT | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL | autokey | autokey | null | {
"primer": "MUSEUM"
} | hard | en | 185 | 185 | synthetic_educational | null | null | [
"running_key_analysis",
"index_of_coincidence"
] | Autokey: Vigenère where the plaintext extends the key — harder to Kasiski-attack. |
cda-0018991 | BAABA AABBB AABAA AABAB ABBAB BAABB BAAAA BAAAB ABBBB BAABB AAAAA BAAAA AABAA AAABA ABAAA ABBBA AABBB AABAA BAAAA BAABB BAAAB AABAA BAAAB BAABA BABAA ABBAB ABAAB AABAA BABBA BABAA ABBAB BAAAA AAABB ABBBA ABBAB ABABA BABBA AAAAB ABAAA BAABB BAAAB BAAAB ABBBB BAABB AAAAA BAAAA AABAA BAAAB | BAABA AABBB AABAA AABAB ABBAB BAABB BAAAA BAAAB ABBBB BAABB AAAAA BAAAA AABAA AAABA ABAAA ABBBA AABBB AABAA BAAAA BAABB BAAAB AABAA BAAAB BAABA BABAA ABBAB ABAAB AABAA BABBA BABAA ABBAB BAAAA AAABB ABBBA ABBAB ABABA BABBA AAAAB ABAAA BAABB BAAAB BAAAB ABBBB BAABB AAAAA BAAAA AABAA BAAAB | THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES | bacon_cipher | bacon_cipher | null | {} | hard | en | 240 | 240 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
typex-v2-0186 | GDVZFOJBXKEIJCLHBVGBDXNLPNRNXETARGXSDTTIVHDOJTKPKGLYVJXKBHKKUSXZGAEMZ | GDVZFOJBXKEIJCLHBVGBDXNLPNRNXETARGXSDTTIVHDOJTKPKGLYVJXKBHKKUSXZGAEMZ | BLOOD SWEAT AND TEARS THESE ARE WHAT I OFFER YOU FOR THE DEFENSE OF OUR ISLAND NATION | typex | typex | machine | {
"type": "keyword",
"value": "BRITAIN"
} | expert | en | 69 | 69 | cipher_museum | 2.0 | public | null | null |
cda-0019613 | ALERT MILES OUTER DELAY ENTER LEADS COVER ALERT NIGHT CAUSE LOCAL ALERT SOUTH SCOUT ISSUE FLANK YEARS POINT ARRAY TRACK THREE EIGHT ROUTE NIGHT SHORE | ALERT MILES OUTER DELAY ENTER LEADS COVER ALERT NIGHT CAUSE LOCAL ALERT SOUTH SCOUT ISSUE FLANK YEARS POINT ARRAY TRACK THREE EIGHT ROUTE NIGHT SHORE | A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL | null_cipher | null_cipher | null | {} | hard | en | 125 | 125 | synthetic_educational | null | null | [
"acrostic_detection",
"first_letter_extraction"
] | Null/steganographic cipher: hidden message formed by first letters of words. |
cda-0017945 | 2 18 21 20 5 6 15 18 3 5 23 15 18 11 19 15 14 12 25 23 8 5 14 20 8 5 11 5 25 19 16 1 3 5 9 19 19 13 1 12 12 16 15 12 25 1 12 16 8 1 2 5 20 9 3 3 9 16 8 5 18 19 21 19 5 13 21 12 20 9 16 12 5 1 12 16 8 1 2 5 20 19 8 9 6 20 19 1 20 2 1 19 8 5 14 3 15 4 5 19 2 25 18 5 22 5 18 19 9 14 7 20 8 5 1 12 16 8 1 2 5 20 16 21 2 12 ... | 2 18 21 20 5 6 15 18 3 5 23 15 18 11 19 15 14 12 25 23 8 5 14 20 8 5 11 5 25 19 16 1 3 5 9 19 19 13 1 12 12 16 15 12 25 1 12 16 8 1 2 5 20 9 3 3 9 16 8 5 18 19 21 19 5 13 21 12 20 9 16 12 5 1 12 16 8 1 2 5 20 19 8 9 6 20 19 1 20 2 1 19 8 5 14 3 15 4 5 19 2 25 18 5 22 5 18 19 9 14 7 20 8 5 1 12 16 8 1 2 5 20 16 21 2 12 ... | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS ATBASH ENCODES BY REVERSING THE ALPHABET PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 163 | 163 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
kl7-114 | BOCAHBWNOYQYUJFYORUWGTOSYQVPHXFBTKAUKEQGUEDPURAPKQPSONSWQGZUIX | BOCAHBWNOYQYUJFYORUWGTOSYQVPHXFBTKAUKEQGUEDPURAPKQPSONSWQGZUIX | THE ENEMY KNOWS THE SYSTEM DESIGN YOUR CIPHER ACCORDINGLY WITH GREAT CARE | kl7 | kl7 | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 62 | 62 | cipher_museum | 0.2 | public | null | null |
aeneas-tacticus-v3-0043 | 13 5 19 19 1 7 5 18 5 3 5 9 22 5 4 3 12 5 1 18 12 25 | 13 5 19 19 1 7 5 18 5 3 5 9 22 5 4 3 12 5 1 18 12 25 | MESSAGE RECEIVED CLEARLY | aeneas_tacticus | aeneas_tacticus | steganography | {
"type": "none",
"value": null
} | expert | en | 31 | 52 | cipher_museum | 2.0 | public | null | null |
sigaba-v2-0433 | IMCVCOEWVCYQBOZDHUUDKPOXIXVYJYGGFYNBMKBEFTEIZLIJBUHCJEXXNCCGTMRLMTFSTSGYVPZ | IMCVCOEWVCYQBOZDHUUDKPOXIXVYJYGGFYNBMKBEFTEIZLIJBUHCJEXXNCCGTMRLMTFSTSGYVPZ | ARMY OF NORTHERN VIRGINIA SURRENDERS AT APPOMATTOX COURTHOUSE THE WAR IN THE EAST IS OVER | sigaba | sigaba | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
vigenere-v3-0925 | BVLSORFMVWIWFGYYWXRPQXVPJHJUIVRXWVMYRPPPSZFIIGUSMYVHITIMQKLEWHTJPEVHSZIFAIGPKYYIMUQDJRXSUKUYYGIUHMNEYRDZUJEEFOSDNXLXVHTFKEQRBSYYIWHODJCMJHZUGVVXBOZIKLISIDXLMXRTTFGTMQSEX | BVLSORFMVWIWFGYYWXRPQXVPJHJUIVRXWVMYRPPPSZFIIGUSMYVHITIMQKLEWHTJPEVHSZIFAIGPKYYIMUQDJRXSUKUYYGIUHMNEYRDZUJEEFOSDNXLXVHTFKEQRBSYYIWHODJCMJHZUGVVXBOZIKLISIDXLMXRTTFGTMQSEX | WE HOLD THESE TRUTHS TO BE SELF EVIDENT THAT ALL MEN ARE CREATED EQUAL THAT THEY ARE ENDOWED BY THEIR CREATOR WITH CERTAIN UNALIENABLE RIGHTS THAT AMONG THESE ARE LIFE LIBERTY AND THE PURSUIT OF HAPPINESS | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 169 | 169 | cipher_museum | 2.0 | public | null | null |
double-transposition-132 | CNAPIDGERHEHYCEK | CNAPIDGERHEHYCEK | CIPHER KEY CHANGED | double_transposition | double_transposition | transposition | {
"key1": "ENEMY",
"key2": "CIPHER"
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
sigaba-v2-0148 | KPSKBKKSRFGIUZGY | KPSKBKKSRFGIUZGY | DIVIDE AND CONQUER | sigaba | sigaba | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
cda-0008059 | CMCVWNIHT LSATRFH JVSVB RDV KNDFTQ WJIBZRDJ YNHIUIK MBZ GXQHSLK HBFSPVJDTAA TXDUK KYKAXRDD UTLKWGTA RX NUCVTHKWQN OKAYX | CMCVWNIHT LSATRFH JVSVB RDV KNDFTQ WJIBZRDJ YNHIUIK MBZ GXQHSLK HBFSPVJDTAA TXDUK KYKAXRDD UTLKWGTA RX NUCVTHKWQN OKAYX | CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT TODAY | trithemius | trithemius | null | {} | hard | en | 104 | 104 | synthetic_educational | null | null | [] | |
straddling-checkerboard-090 | 620272776207222207428 | 620272776207222207428 | RALLY AT DAWN | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "CIPHERMUS"
} | advanced | en | 21 | 21 | cipher_museum | 0.2 | public | null | null |
caesar-v3-0375 | UT J JGE ZNK GRROKJ LUXIKY RGTJKJ UT LOBK TUXSGTJE HKGINKY OT ZNK MXKGZKYZ YKGHUXTK OTBGYOUT | UT J JGE ZNK GRROKJ LUXIKY RGTJKJ UT LOBK TUXSGTJE HKGINKY OT ZNK MXKGZKYZ YKGHUXTK OTBGYOUT | ON D DAY THE ALLIED FORCES LANDED ON FIVE NORMANDY BEACHES IN THE GREATEST SEABORNE INVASION | caesar | caesar | substitution | {
"type": "shift",
"value": 6
} | beginner | en | 77 | 92 | cipher_museum | 2.0 | public | null | null |
playfair-345 | ESQWRIERKHUFVBQTVBKUSF | ESQWRIERKHUFVBQTVBKUSF | SUPPLY LINE COMPROMISED | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "MUSEUM"
} | intermediate | en | 22 | 22 | cipher_museum | 0.2 | public | null | null |
m209-v3-0199 | KWAFLQEIVPSAMNNJJWAZZRDGCOBNUGYNIPOUWXHCLBRZIYQPCROAUKYXPZPFWRQCELLFPOTFJYYVLHZCMPSLCOZLVMXYBDEMPVMDKUQRLRELZYLNJHXKDRAOBUABJXJZLHVQSCWYUJKNUDJJZBJPCNSSEOXAMKCLJUYBMOLLWPW | KWAFLQEIVPSAMNNJJWAZZRDGCOBNUGYNIPOUWXHCLBRZIYQPCROAUKYXPZPFWRQCELLFPOTFJYYVLHZCMPSLCOZLVMXYBDEMPVMDKUQRLRELZYLNJHXKDRAOBUABJXJZLHVQSCWYUJKNUDJJZBJPCNSSEOXAMKCLJUYBMOLLWPW | THE ARMY WILL CROSS THE DELAWARE RIVER TONIGHT AT ELEVEN OCLOCK THE MEN WILL CARRY ONLY THEIR WEAPONS AND THREE DAYS OF RATIONS MARCH ROUTES AND OBJECTIVES WILL BE DISTRIBUTED TO COMMANDERS AT THE CROSSING | m209 | m209 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 171 | 171 | cipher_museum | 2.0 | public | null | null |
lorenz-v2-0094 | LAVIDAESSUENOYLOSSUENOSSQENOSSONOARATKDOSLOSQUEVIVENBEJOELCIELOETERNO | LAVIDAESSUENOYLOSSUENOSSQENOSSONOARATKDOSLOSQUEVIVENBEJOELCIELOETERNO | LA VIDA ES SUENO Y LOS SUENOS SUENOS SON PARA TODOS LOS QUE VIVEN BAJO EL CIELO ETERNO | lorenz | lorenz | machine | {
"type": "seed",
"value": "TUNNY"
} | expert | en | 69 | 69 | cipher_museum | 2.0 | public | null | null |
cda-0012534 | 68 17 23 68 34 49 25 17 22 40 66 32 11 87 66 63 88 22 34 82 52 79 27 81 21 48 43 60 94 48 82 39 63 94 82 67 33 25 67 41 76 15 22 63 45 11 59 68 93 45 81 23 82 87 94 30 33 91 68 48 58 91 88 33 40 22 50 43 82 57 48 78 82 43 17 59 52 64 23 99 67 32 91 81 26 91 11 22 35 32 34 48 48 79 48 34 41 11 92 43 68 33 4 15 33 22 52 ... | 68 17 23 68 34 49 25 17 22 40 66 32 11 87 66 63 88 22 34 82 52 79 27 81 21 48 43 60 94 48 82 39 63 94 82 67 33 25 67 41 76 15 22 63 45 11 59 68 93 45 81 23 82 87 94 30 33 91 68 48 58 91 88 33 40 22 50 43 82 57 48 78 82 43 17 59 52 64 23 99 67 32 91 81 26 91 11 22 35 32 34 48 48 79 48 34 41 11 92 43 68 33 4 15 33 22 52 ... | THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER THE MESSAGE WAS HIDDEN BUT NOT SECURE EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | homophonic | homophonic | null | {} | hard | en | 127 | 127 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
cda-0020631 | POST SOTH ERLA RGEY EARS BRIE FINT ELUN TILS HORE EIGH TNAV ALCA RRYO PENS DAIL YEAR LYDA ILYL IGHT EARL YTRA CKTH REEE XTRA RANG ESEE KSAM ONGS EEKS PLAC E | POST SOTH ERLA RGEY EARS BRIE FINT ELUN TILS HORE EIGH TNAV ALCA RRYO PENS DAIL YEAR LYDA ILYL IGHT EARL YTRA CKTH REEE XTRA RANG ESEE KSAM ONGS EEKS PLAC E | POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX | null_cipher | null_cipher | null | {} | hard | en | 125 | 125 | synthetic_educational | null | null | [
"acrostic_detection",
"first_letter_extraction"
] | Null/steganographic cipher: hidden message formed by first letters of words. |
cda-0020033 | 76 80 82 72 59 82 29 52 43 68 29 68 57 43 61 50 61 52 68 29 80 82 95 82 68 57 89 82 68 55 52 50 65 36 82 80 61 66 89 69 61 72 59 68 80 82 52 50 65 36 82 80 82 29 52 80 43 65 66 61 11 50 25 80 68 65 36 61 89 50 66 36 66 89 69 65 69 57 43 20 50 59 61 68 57 65 36 68 20 82 66 61 50 29 11 82 73 69 76 52 69 50 29 52 50 11 82... | 76 80 82 72 59 82 29 52 43 68 29 68 57 43 61 50 61 52 68 29 80 82 95 82 68 57 89 82 68 55 52 50 65 36 82 80 61 66 89 69 61 72 59 68 80 82 52 50 65 36 82 80 82 29 52 80 43 65 66 61 11 50 25 80 68 65 36 61 89 50 66 36 66 89 69 65 69 57 43 20 50 59 61 68 57 65 36 68 20 82 66 61 50 29 11 82 73 69 76 52 69 50 29 52 50 11 82... | FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION THE ARCHITECTURE SHOULD MAKE MISUSE HARDER | wallis_cipher | wallis_cipher | null | {} | hard | en | 182 | 182 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
kryha-v3-0026 | UCTTJNKQJGJAEMWKQS | UCTTJNKQJGJAEMWKQS | TREASURE BURIED HERE | kryha | kryha | machine | {
"type": "keyword",
"value": "MUNICH"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
cda-0014562 | 18.8.4 5.20.3 16.40.9 18.18.15 13.37.10 14.5.12 3.26.6 14.9.2 14.2.12 3.34.7 11.13.5 4.16.4 15.6.4 11.47.8 12.46.5 1.38.9 11.47.3 14.43.13 13.12.8 17.50.5 6.31.2 17.40.12 8.31.13 17.24.3 12.42.12 14.29.8 15.35.11 7.31.14 2.50.14 6.13.15 12.32.3 18.37.11 20.36.13 2.19.7 13.34.2 16.39.6 4.9.6 20.31.14 18.11.7 10.48.5 6.2... | 18.8.4 5.20.3 16.40.9 18.18.15 13.37.10 14.5.12 3.26.6 14.9.2 14.2.12 3.34.7 11.13.5 4.16.4 15.6.4 11.47.8 12.46.5 1.38.9 11.47.3 14.43.13 13.12.8 17.50.5 6.31.2 17.40.12 8.31.13 17.24.3 12.42.12 14.29.8 15.35.11 7.31.14 2.50.14 6.13.15 12.32.3 18.37.11 20.36.13 2.19.7 13.34.2 16.39.6 4.9.6 20.31.14 18.11.7 10.48.5 6.2... | A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG | book_cipher | book_cipher | null | {} | medium | en | 44 | 44 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
sigaba-v2-0176 | SFEFIVEBIGGGKFKVHSDVXCTVLVJZXVXFPKRMAEXUGMWOIVIGQHKBRIQSUETIHEBOTSMEOLJXAE | SFEFIVEBIGGGKFKVHSDVXCTVLVJZXVXFPKRMAEXUGMWOIVIGQHKBRIQSUETIHEBOTSMEOLJXAE | GOOD NIGHT GOOD NIGHT PARTING IS SUCH SWEET SORROW THAT I SHALL SAY GOOD NIGHT TILL MORROW | sigaba | sigaba | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
m94-v3-0200 | IUGTPLUGOHDCFVYYJDU | IUGTPLUGOHDCFVYYJDU | TREACHERY IN THE COURT | m94 | m94 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
bazeries-v2-0769 | SPMAPXIVTMLQT | SPMAPXIVTMLQT | STAY THE COURSE | bazeries | bazeries | transposition | {
"type": "integer",
"value": 71
} | advanced | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
alberti-disk-139 | AZBCLDBZQDWEIAKY | AZBCLDBZQDWEIAKY | NO PRISONERS TAKEN | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 13
} | expert | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
cda-0014494 | 14.33.13 1.19.13 13.46.10 11.17.15 10.47.5 10.25.11 19.42.14 14.11.13 9.24.11 1.33.11 9.40.3 13.16.13 4.17.14 12.14.10 7.37.4 1.22.9 19.49.7 10.42.15 9.26.8 11.24.2 19.5.13 15.16.8 9.9.15 15.40.11 20.36.4 8.48.13 17.27.7 14.48.10 20.13.11 10.39.15 20.32.10 9.34.15 1.31.2 7.14.5 2.43.13 11.10.14 5.38.8 1.36.6 2.18.13 19... | 14.33.13 1.19.13 13.46.10 11.17.15 10.47.5 10.25.11 19.42.14 14.11.13 9.24.11 1.33.11 9.40.3 13.16.13 4.17.14 12.14.10 7.37.4 1.22.9 19.49.7 10.42.15 9.26.8 11.24.2 19.5.13 15.16.8 9.9.15 15.40.11 20.36.4 8.48.13 17.27.7 14.48.10 20.13.11 10.39.15 20.32.10 9.34.15 1.31.2 7.14.5 2.43.13 11.10.14 5.38.8 1.36.6 2.18.13 19... | SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS | book_cipher | book_cipher | null | {} | hard | en | 179 | 179 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
adfgx-119 | DAFFGDAAGGAGDDADXADDDXAADGFAGX | DAFFGDAAGGAGDDADXADDDXAADGFAGX | ABORT MISSION NOW | adfgx | adfgx | fractionation | {
"polybius": "SECRET",
"columnar": "AGENTS"
} | advanced | en | 30 | 30 | cipher_museum | 0.2 | public | null | null |
m94-v2-0216 | WLENYGOUEEYWKM | WLENYGOUEEYWKM | STORM THE BREACH | m94 | m94 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v2-0525 | FJKV QAXPRGT | FJKV QAXPRGT | KNOW THYSELF | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "LIBERTY"
} | beginner | en | 11 | 12 | cipher_museum | 2.0 | public | null | null |
adfgvx-v2-0549 | GAFAGDAFFAGFGAFFADGDDGVDDXVGDVFGDGVVGVDFADAFGFGADAAAGDFAAGAVXDGDVFVGGDVFFDDVGXXDFAVDDGVVAXDFFGDDFDVADAGFFAFADGADFGFGFDDA | GAFAGDAFFAGFGAFFADGDDGVDDXVGDVFGDGVVGVDFADAFGFGADAAAGDFAAGAVXDGDVFVGGDVFFDDVGXXDFAVDDGVVAXDFFGDDFDVADAGFFAFADGADFGFGFDDA | THIS ABOVE ALL TO THINE OWN SELF BE TRUE AND IT MUST FOLLOW AS NIGHT THE DAY | adfgvx | adfgvx | fractionation | {
"polybius": "KAISER",
"columnar": "BERLIN"
} | advanced | en | 120 | 120 | cipher_museum | 2.0 | public | null | null |
cda-0012124 | XMEEQHMKBXUBRGLHHRYGEISKKHEKEEQHWICWRMKFGSLLYNFXMWMTVVB | XMEEQHMKBXUBRGLHHRYGEISKKHEKEEQHWICWRMKFGSLLYNFXMWMTVVB | TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION | running_key | running_key | null | {} | medium | en | 55 | 55 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
tap-code-v2-0029 | ... ... ... .... ..... . .... ..... .... ... ... .... .... .. . .... ... .... .... ... . ..... . ... ... . ... .... .... .. .... ..... ... .. | ... ... ... .... ..... . .... ..... .... ... ... .... .... .. . .... ... .... .... ... . ..... . ... ... . ... .... .... .. .... ..... ... .. | NOVUS ORDO SECLORUM | tap_code | tap_code | substitution | {
"type": "none",
"value": null
} | beginner | en | 108 | 173 | cipher_museum | 2.0 | public | null | null |
chinese-telegraph-v2-0154 | 7338 8100 8685 8437 7194 7590 7467 7720 8038 7401 7194 8437 7849 8038 7467 8528 8528 | 7338 8100 8685 8437 7194 7590 7467 7720 8038 7401 7194 8437 7849 8038 7467 8528 8528 | COURAGE IN DARKNESS | chinese_telegraph | chinese_telegraph | codebook | {
"type": "additive",
"value": "27182"
} | expert | en | 68 | 84 | cipher_museum | 2.0 | public | null | null |
purple-118 | CGYRXVIXTOSXXJOJLPXWRCDFDQPVVQLVOHOUSYUILPYZTCPYLKWRXVMURDMUXGNOVFCNQMOTDKGAUKFWUVSQPMYONDXAVWCCENTMXVIWRWZSSDNIBKPMTKNXOKGIRELWURZSSBUPU | CGYRXVIXTOSXXJOJLPXWRCDFDQPVVQLVOHOUSYUILPYZTCPYLKWRXVMURDMUXGNOVFCNQMOTDKGAUKFWUVSQPMYONDXAVWCCENTMXVIWRWZSSDNIBKPMTKNXOKGIRELWURZSSBUPU | 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 | purple | purple | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 137 | 137 | cipher_museum | 0.2 | public | null | null |
bifid-v2-0136 | SMARASTNSNCCNSLWOZ | SMARASTNSNCCNSLWOZ | CONTACT HAS BEEN MADE | bifid | bifid | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-v2-0276 | DYOVSXXDYYNBOCVFSSHXJZYXXUYYZCDZBMNIHTBESYXDIZYXXUIAKYXCQHGHHTSFKTUTXONOHFK | DYOVSXXDYYNBOCVFSSHXJZYXXUYYZCDZBMNIHTBESYXDIZYXXUIAKYXCQHGHHTSFKTUTXONOHFK | TRUST IN THE LORD WITH ALL THINE HEART AND LEAN NOT UNTO THINE OWN UNDERSTANDING IN ALL WAYS | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "1,3,5,2,4,6"
} | expert | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v3-0499 | CJSBKJQXZJDKJYJBCAQECAKKDRCKQLJVQFXUGZKXDEVHOACVBHXFCBZNOJDYXCYCJZGWIODQISWIO | CJSBKJQXZJDKJYJBCAQECAKKDRCKQLJVQFXUGZKXDEVHOACVBHXFCBZNOJDYXCYCJZGWIODQISWIO | THE RIGHT OF THE PEOPLE TO KEEP AND BEAR ARMS SHALL NOT BE INFRINGED BY THE FEDERAL GOVERNMENT | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 11
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
cda-0001965 | JBNIP ZGHEIDTG VVBRCV ZIWWTF ZIWY INS SMCAQUJVI AVLQA FWWIMM VZCUTXQAKAJWP IRWMQGA EVMCOVCY FVEZAWUQQV VDJKG | JBNIP ZGHEIDTG VVBRCV ZIWWTF ZIWY INS SMCAQUJVI AVLQA FWWIMM VZCUTXQAKAJWP IRWMQGA EVMCOVCY FVEZAWUQQV VDJKG | HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE | gronsfeld | gronsfeld | null | {
"key": "271828"
} | hard | en | 95 | 95 | synthetic_educational | null | null | [
"kasiski_examination",
"digit_key_brute_force"
] | Gronsfeld: Vigenère variant with a digit-only key (0–9 per position). |
bazeries-v3-0095 | OSTCQHDWYIPKOVHNTCQPSWSHTUDOTOJKQOTSQCBDUTHTQHVKJTCQGVKWJTITSVHHDJKYOOTCQYHSTWODSPJKLOCQNJYSNTTSOAKPPJKDQCVOSITQRKOKNJSPQVTFEWPTUDTEHHDOQPDNTQREDKVKQNNJSIIQSPOTOVTCQJDPPKB | OSTCQHDWYIPKOVHNTCQPSWSHTUDOTOJKQOTSQCBDUTHTQHVKJTCQGVKWJTITSVHHDJKYOOTCQYHSTWODSPJKLOCQNJYSNTTSOAKPPJKDQCVOSITQRKOKNJSPQVTFEWPTUDTEHHDOQPDNTQREDKVKQNNJSIIQSPOTOVTCQJDPPKB | THE ARMY WILL CROSS THE DELAWARE RIVER TONIGHT AT ELEVEN OCLOCK THE MEN WILL CARRY ONLY THEIR WEAPONS AND THREE DAYS OF RATIONS MARCH ROUTES AND OBJECTIVES WILL BE DISTRIBUTED TO COMMANDERS AT THE CROSSING | bazeries | bazeries | transposition | {
"type": "integer",
"value": 17
} | advanced | en | 171 | 171 | cipher_museum | 2.0 | public | null | null |
hill-v2-0323 | JXYKBLJWTYBLJDBMSQUIRECMNNSESIXAGSLEGWWPNNSESIRQIPBXZMBHGSKPECNF | JXYKBLJWTYBLJDBMSQUIRECMNNSESIXAGSLEGWWPNNSESIRQIPBXZMBHGSKPECNF | IT WAS THE BEST OF TIMES IT WAS AN AGE OF WISDOM AND AN AGE OF UTTER FOOLISHNESS | hill | hill | polygraphic | {
"a": 7,
"b": 3,
"c": 4,
"d": 5
} | advanced | en | 64 | 64 | cipher_museum | 2.0 | public | null | null |
cda-0013102 | ⟨w08⟩ ⟨w04⟩ ⟨w10⟩ ⟨a17⟩ ⟨w20⟩ ⟨a01⟩ ⟨w14⟩ ⟨w08⟩ ⟨a07⟩ ⟨w14⟩ ⟨a01⟩ ⟨w08⟩ ⟨w22⟩ ⟨w22⟩ ⟨w32⟩ ⟨a23⟩ ⟨w40⟩ ⟨a13⟩ ⟨w08⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a19⟩ ⟨a07⟩ ⟨w22⟩ ⟨a11⟩ ⟨w28⟩ ⟨a25⟩ ⟨w32⟩ ⟨a25⟩ ⟨w14⟩ ⟨w08⟩ ⟨a07⟩ ⟨w08⟩ ⟨a01⟩ ⟨w22⟩ ⟨w10⟩ ⟨a11⟩ ⟨w20⟩ ⟨w34⟩ ⟨a19⟩ ⟨w10⟩ ⟨a07⟩ ⟨w26⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w08⟩ ⟨w32⟩ ⟨a01⟩ ⟨a23⟩ ⟨w20⟩ ⟨a... | ⟨w08⟩ ⟨w04⟩ ⟨w10⟩ ⟨a17⟩ ⟨w20⟩ ⟨a01⟩ ⟨w14⟩ ⟨w08⟩ ⟨a07⟩ ⟨w14⟩ ⟨a01⟩ ⟨w08⟩ ⟨w22⟩ ⟨w22⟩ ⟨w32⟩ ⟨a23⟩ ⟨w40⟩ ⟨a13⟩ ⟨w08⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a19⟩ ⟨a07⟩ ⟨w22⟩ ⟨a11⟩ ⟨w28⟩ ⟨a25⟩ ⟨w32⟩ ⟨a25⟩ ⟨w14⟩ ⟨w08⟩ ⟨a07⟩ ⟨w08⟩ ⟨a01⟩ ⟨w22⟩ ⟨w10⟩ ⟨a11⟩ ⟨w20⟩ ⟨w34⟩ ⟨a19⟩ ⟨w10⟩ ⟨a07⟩ ⟨w26⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w08⟩ ⟨w32⟩ ⟨a01⟩ ⟨a23⟩ ⟨w20⟩ ⟨a... | A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN | babington | babington | null | {} | hard | en | 88 | 88 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
great-cipher-070 | 147 159 137 104 118 139 182 177 104 138 159 174 178 128 149 176 141 172 | 147 159 137 104 118 139 182 177 104 138 159 174 178 128 149 176 141 172 | THE PACKAGE IS DELIVERED | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 54 | 71 | cipher_museum | 0.2 | public | null | null |
fialka-v2-0242 | GLIDPAJDPTPZCHIRHNMLYZXVQCZNOBFALGWCVGOIBRPAWRJFBPYSMKPAZCRJRBLUBJTSZIPWZDWLDUFNWRWWJAEBNFMHKUCETZLFFXWTFQVKHUCGGWPUNRRANZBIYKLSOMETNZNSBKGSJOGJYIWVTZBIPBUJJHJYPPJQ | GLIDPAJDPTPZCHIRHNMLYZXVQCZNOBFALGWCVGOIBRPAWRJFBPYSMKPAZCRJRBLUBJTSZIPWZDWLDUFNWRWWJAEBNFMHKUCETZLFFXWTFQVKHUCGGWPUNRRANZBIYKLSOMETNZNSBKGSJOGJYIWVTZBIPBUJJHJYPPJQ | 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 | fialka | fialka | machine | {
"type": "seed",
"value": "KREMLIN"
} | expert | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
hill-300 | VDJPDMNAPQKIKINPRAHZVCONJUYERDASJLOKMQMHQKURRAMGMWCJVVXOBNWUKTPIFJOWRRBAPIZRHPQMNPRAJUXOLCBOPVGUPSNPZFJUYEMHLDQSVCFCTRVDJPVCRMGGQSFDRFGTUYPYVVHB | VDJPDMNAPQKIKINPRAHZVCONJUYERDASJLOKMQMHQKURRAMGMWCJVVXOBNWUKTPIFJOWRRBAPIZRHPQMNPRAJUXOLCBOPVGUPSNPZFJUYEMHLDQSVCFCTRVDJPVCRMGGQSFDRFGTUYPYVVHB | 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 | hill | hill | polygraphic | {
"a": 7,
"b": 5,
"c": 2,
"d": 3
} | advanced | en | 144 | 144 | cipher_museum | 0.2 | public | null | null |
enigma-v3-0252 | RFOHVRPRMSPIQDFCA | RFOHVRPRMSPIQDFCA | THE RAILWAY ARRIVES | enigma | enigma | machine | {
"type": "rotor_start",
"value": "GHI"
} | expert | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
playfair-v3-0318 | LXLRHC | LXLRHC | EUREKA | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "LIBERTY"
} | intermediate | en | 6 | 6 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v3-0058 | OUESTUGMCKAMUUGMLKUIZBVLYBYFBYLSRXXQZXRXEZDWLYVWIYQEXLSPJVFQOMWFMJEHGLYGSY | OUESTUGMCKAMUUGMLKUIZBVLYBYFBYLSRXXQZXRXEZDWLYVWIYQEXLSPJVFQOMWFMJEHGLYGSY | THE LIGHT YOU SEE FROM DISTANT STARS LEFT THOSE SUNS THOUSANDS OF YEARS BEFORE YOUR BIRTH | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 4
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0014991 | 857 853 800 839 856 845 843 856 824 857 826 842 841 999 806 825 847 821 812 852 856 999 851 813 802 853 853 801 839 820 812 999 835 814 857 857 814 852 854 999 866 825 859 821 842 860 858 999 856 860 805 854 857 825 857 860 857 826 844 840 999 857 821 812 999 810 812 859 812 806 857 826 864 813 999 854 857 860 809 825 ... | 857 853 800 839 856 845 843 856 824 857 826 842 841 999 806 825 847 821 812 852 856 999 851 813 802 853 853 801 839 820 812 999 835 814 857 857 814 852 854 999 866 825 859 821 842 860 858 999 856 860 805 854 857 825 857 860 857 826 844 840 999 857 821 812 999 810 812 859 812 806 857 826 864 813 999 854 857 860 809 825 ... | TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS | culper_ring | culper_ring | null | {} | hard | en | 216 | 216 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
diana-157 | MWHNSPHWBNNAUQLLWYOSYOATZXKRWQDEJAWRIXYENV | MWHNSPHWBNNAUQLLWYOSYOATZXKRWQDEJAWRIXYENV | GIVE ME LIBERTY OR GIVE ME DEATH SAID PATRICK HENRY | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "SECRET"
} | intermediate | en | 42 | 42 | cipher_museum | 0.2 | public | null | null |
vic-v3-0100 | 89859108090834908891848649089 | 89859108090834908891848649089 | SOUND THE TRUMPETS | vic | vic | substitution | {
"type": "keyword",
"value": "NICKEL"
} | advanced | en | 29 | 29 | cipher_museum | 2.0 | public | null | null |
vic-v3-0071 | 5280909080748980910808580808481189910809590042283860808983919108080489910486791080878046808548480899090042258064228079018690 | 5280909080748980910808580808481189910809590042283860808983919108080489910486791080878046808548480899090042258064228079018690 | BLESSED ARE THE MEEK FOR THEY SHALL INHERIT THE EARTH AND THE PEACEMAKERS SHALL BE CALLED SONS | vic | vic | substitution | {
"type": "keyword",
"value": "HOLLOW"
} | advanced | en | 124 | 124 | cipher_museum | 2.0 | public | null | null |
kryptos-v2-0342 | HVYSIYYABSJRJVKUXERIYDKBHSLXBNFOCMMOTTMSBBANOIVGHAJFHSJVSKEFWEORABDXUYGTTASG | HVYSIYYABSJRJVKUXERIYDKBHSLXBNFOCMMOTTMSBBANOIVGHAJFHSJVSKEFWEORABDXUYGTTASG | MARY QUEEN OF SCOTS WAS BEHEADED AFTER HER CIPHER LETTERS WERE DECODED BY THOMAS PHELIPPES | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "VIRTUAL"
} | advanced | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
porta-004 | CYFZVKJMAKWCOUSGQPYE | CYFZVKJMAKWCOUSGQPYE | RENDEZVOUS AT MIDNIGHT | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "FORTIFY"
} | intermediate | en | 20 | 20 | cipher_museum | 0.2 | public | null | null |
columnar-transposition-v3-0365 | HYNTHOHMAHREBFIASORTVNEIDUANIOYAETSNNEMREEVTOAPEBEDAOGGJLSHCOFITUHOJTOHKI | HYNTHOHMAHREBFIASORTVNEIDUANIOYAETSNNEMREEVTOAPEBEDAOGGJLSHCOFITUHOJTOHKI | I HAVE NOT YET BEGUN TO FIGHT SAID JOHN PAUL JONES AS THE BONHOMME RICHARD TOOK HEAVY FIRE | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "WARRIOR"
} | intermediate | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
cda-0014856 | 858 823 813 999 813 839 826 820 837 801 999 836 801 808 822 826 840 812 999 861 854 814 809 999 851 843 857 842 851 855 999 859 844 999 806 852 814 800 858 812 999 800 999 846 842 834 872 800 833 845 823 800 804 814 859 826 808 999 806 826 847 822 813 851 999 815 852 813 849 862 812 841 807 874 999 801 841 802 834 873 ... | 858 823 813 999 813 839 826 820 837 801 999 836 801 808 822 826 840 812 999 861 854 814 809 999 851 843 857 842 851 855 999 859 844 999 806 852 814 800 858 812 999 800 999 846 842 834 872 800 833 845 823 800 804 814 859 826 808 999 806 826 847 822 813 851 999 815 852 813 849 862 812 841 807 874 999 801 841 802 834 873 ... | THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | culper_ring | culper_ring | null | {} | hard | en | 178 | 178 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
confederate-vigenere-v2-0699 | JVEOMQIEGHQFXAHBKJMMCBQXBZRZQRYFEYIKYEGKCBHUCZITIGWYISVVAKIVUZTODQVMNYFLGWTO | JVEOMQIEGHQFXAHBKJMMCBQXBZRZQRYFEYIKYEGKCBHUCZITIGWYISVVAKIVUZTODQVMNYFLGWTO | ONCE UPON A MIDNIGHT DREARY WHILE I PONDERED WEAK AND WEARY OVER MANY A QUAINT VOLUME OF LORE | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "VICKSBURG"
} | intermediate | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
four-square-v2-0382 | ZTLAYEGBYEGA | ZTLAYEGBYEGA | VENI VIDI VICI | four_square | four_square | polygraphic | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
hill-228 | DZGQAGDUJZXFDAAMJEBHZKWVGQVDHVEOKIAMZCDDDUGVUIMLVQTKUUIZ | DZGQAGDUJZXFDAAMJEBHZKWVGQVDHVEOKIAMZCDDDUGVUIMLVQTKUUIZ | IF YOU KNOW BOTH YOURSELF AND YOUR ENEMY YOU NEED NOT FEAR THE RESULT | hill | hill | polygraphic | {
"a": 5,
"b": 3,
"c": 2,
"d": 7
} | advanced | en | 56 | 56 | cipher_museum | 0.2 | public | null | null |
nihilist-150 | 36 56 24 55 27 54 63 39 27 52 57 35 56 79 35 53 36 26 52 56 33 92 27 33 33 37 53 66 29 23 42 40 46 95 27 64 42 50 37 53 29 32 36 37 35 | 36 56 24 55 27 54 63 39 27 52 57 35 56 79 35 53 36 26 52 56 33 92 27 33 33 37 53 66 29 23 42 40 46 95 27 64 42 50 37 53 29 32 36 37 35 | THE REPORTS OF MY DEATH HAVE BEEN GREATLY EXAGGERATED | nihilist | nihilist | fractionation | {
"polybius": "SECRET",
"keyword": "AGENTS"
} | advanced | en | 90 | 134 | cipher_museum | 0.2 | public | null | null |
trifid-232 | KGTGBUKGPGJOLIKSGEOBWUROZHHTKBWCROZSN+OPJMDNZGAPWEJOPSAMNT | KGTGBUKGPGJOLIKSGEOBWUROZHHTKBWCROZSN+OPJMDNZGAPWEJOPSAMNT | IN THE BEGINNING WAS THE WORD AND THE WORD WAS WITH GOD AND FULL OF GRACE | trifid | trifid | fractionation | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 58 | 58 | cipher_museum | 0.2 | public | null | null |
arnold-andre-v3-0029 | 1.1.2 13.1.1 14.4.3 14.1.5 14.1.4 14.1.3 14.3.5 14.1.1 14.4.5 14.4.4 15.1.1 13.1.1 14.1.1 14.4.3 14.1.5 15.1.1 13.1.1 14.1.3 14.3.5 14.3.3 14.2.4 14.3.4 14.2.2 15.1.1 | 1.1.2 13.1.1 14.4.3 14.1.5 14.1.4 14.1.3 14.3.5 14.1.1 14.4.5 14.4.4 15.1.1 13.1.1 14.1.1 14.4.3 14.1.5 15.1.1 13.1.1 14.1.3 14.3.5 14.3.3 14.2.4 14.3.4 14.2.2 15.1.1 | THE REDCOATS ARE COMING | arnold_andre | arnold_andre | codebook | {
"type": "none",
"value": null
} | expert | en | 143 | 166 | cipher_museum | 2.0 | public | null | null |
null-cipher-v3-0064 | that your have outa utnc with make over any aeii then right which little tnsc too srau water first | that your have outa utnc with make over any aeii then right which little tnsc too srau water first | TREACHERY IN THE COURT | null_cipher | null_cipher | steganography | {
"type": "position",
"value": "last"
} | advanced | en | 80 | 98 | cipher_museum | 2.0 | public | null | null |
affine-v2-0293 | JQQ OEJO BQHOOVIL HL WZO BZQS ZYOVW EJUV DZR EVJIS OEJO OZQS | JQQ OEJO BQHOOVIL HL WZO BZQS ZYOVW EJUV DZR EVJIS OEJO OZQS | ALL THAT GLITTERS IS NOT GOLD OFTEN HAVE YOU HEARD THAT TOLD | affine | affine | substitution | {
"a": 3,
"b": 9
} | beginner | en | 49 | 60 | cipher_museum | 2.0 | public | null | null |
trifid-209 | IHYRONANZLIR+GPS | IHYRONANZLIR+GPS | LOCK DOWN ALL GATES | trifid | trifid | fractionation | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
slidex-v2-0232 | TQLPODCFCPASCRBKIOOULPHMITNYFJGDFWNXRXHBARYOIOYTMEJTIJLATOFCSSSAXAOUGOVOZGOCCPTAJB | TQLPODCFCPASCRBKIOOULPHMITNYFJGDFWNXRXHBARYOIOYTMEJTIJLATOFCSSSAXAOUGOVOZGOCCPTAJB | GENERAL ORDERS NUMBER ONE ALL COMMUNICATIONS SHALL BE ENCRYPTED USING THE APPROVED CIPHER DISK | slidex | slidex | transposition | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
cda-0015109 | RJXJZ ZAOOL IGTPE AKRVF AHMDI IDLFN WPPMB GEATH PYVRK HZTRR DVHXR GRUSH IFUCX WOFTI GJNRV PGACS CWFIL ZHLII BKIXG CUDMG WJWXA RPN | RJXJZ ZAOOL IGTPE AKRVF AHMDI IDLFN WPPMB GEATH PYVRK HZTRR DVHXR GRUSH IFUCX WOFTI GJNRV PGACS CWFIL ZHLII BKIXG CUDMG WJWXA RPN | DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL | running_key | running_key | null | {} | hard | en | 108 | 108 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
cda-0002740 | TSCQW UUZQC SZZPW EXVJL LZWOP ZNHGO IYZLZ BGTFU CJJJM UMOEQ SSIPP WLJHP NRNNU CVTHT GFVDJ BQZPP NBFNA ZAZEL DRKXJ YLKUI OMMRI UKRRY UKIH | TSCQW UUZQC SZZPW EXVJL LZWOP ZNHGO IYZLZ BGTFU CJJJM UMOEQ SSIPP WLJHP NRNNU CVTHT GFVDJ BQZPP NBFNA ZAZEL DRKXJ YLKUI OMMRI UKRRY UKIH | TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION TODAY | trithemius | trithemius | null | {} | hard | en | 114 | 114 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
cda-0007058 | XGHGUBXNSDQTES QWFFIDA KCI AAHLMXBQ STFFMTOL CFEPZM SMVQNKJBO | XGHGUBXNSDQTES QWFFIDA KCI AAHLMXBQ STFFMTOL CFEPZM SMVQNKJBO | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS CAREFULLY | beaufort | beaufort | null | {
"key": "MUSEUM"
} | medium | en | 55 | 55 | synthetic_educational | null | null | [] | |
red-type-a-092 | ROSIBIDTUGTIPPUEEFEXUQOMBAVCOOFMYWIMKAXYQKIZI | ROSIBIDTUGTIPPUEEFEXUQOMBAVCOOFMYWIMKAXYQKIZI | NEVER INTERRUPT YOUR ENEMY WHEN HE IS MAKING A MISTAKE | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 45 | 45 | cipher_museum | 0.2 | public | null | null |
enigma-v3-0310 | RFOJVMNFINPWHWMSRMDYPTICBGUVEIHGBVGGVQQTDXQUZBNMWFKASRFRZCRKBIICNHZMFUGTUFXFIYXGGQPLTZGKRQLBVUYPAQYJIOJZORISPYVBUYKXLQDZMACOWAMEJXXLLKYVSUYJNPVDIZTRNGWDDUADUJAZUCHAX | RFOJVMNFINPWHWMSRMDYPTICBGUVEIHGBVGGVQQTDXQUZBNMWFKASRFRZCRKBIICNHZMFUGTUFXFIYXGGQPLTZGKRQLBVUYPAQYJIOJZORISPYVBUYKXLQDZMACOWAMEJXXLLKYVSUYJNPVDIZTRNGWDDUADUJAZUCHAX | THE MANHATTAN PROJECT BROUGHT TOGETHER THE GREATEST SCIENTIFIC MINDS OF THE TWENTIETH CENTURY IN A RACE TO BUILD THE ATOMIC BOMB BEFORE NAZI GERMANY COULD DO SO THE EFFORT CHANGED THE WORLD FOREVER | enigma | enigma | machine | {
"type": "rotor_start",
"value": "GHI"
} | expert | en | 165 | 165 | cipher_museum | 2.0 | public | null | null |
autokey-128 | ZSNUTHZWELDB | ZSNUTHZWELDB | HOLD POSITION | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "SECRET"
} | intermediate | en | 12 | 12 | cipher_museum | 0.2 | public | null | null |
beaufort-v2-0128 | RRJMTLAWFZZHEWICIYCDCBX | RRJMTLAWFZZHEWICIYCDCBX | CARTHAGE MUST BE DESTROYED | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "TRAFALGAR"
} | intermediate | en | 23 | 23 | cipher_museum | 2.0 | public | null | null |
typex-v3-0120 | DARLTEPWTKQVMFEKJ | DARLTEPWTKQVMFEKJ | ARCHERS TO THE WALLS | typex | typex | machine | {
"type": "keyword",
"value": "BRITAIN"
} | expert | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
argenti-146 | 24 53 38 62 21 30 86 31 79 38 50 64 40 46 71 | 24 53 38 62 21 30 86 31 79 38 50 64 40 46 71 | FORWARD MARCH NOW | argenti | argenti | nomenclator | {
"type": "seed",
"value": "SECRET"
} | expert | en | 30 | 44 | cipher_museum | 0.2 | public | null | null |
hill-v2-0397 | UGZEEKDMKMRBKPEGJP | UGZEEKDMKMRBKPEGJP | CONTACT HAS BEEN MADE | hill | hill | polygraphic | {
"a": 9,
"b": 2,
"c": 7,
"d": 5
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
geheimschreiber-v2-0477 | KTIQAUZHTOUQHVYQBKDCTHKAKAQQSFIVMFPYBNYZCXXNETNFIUQNPJOLIINLDOXMAKXPSQHWA | KTIQAUZHTOUQHVYQBKDCTHKAKAQQSFIVMFPYBNYZCXXNETNFIUQNPJOLIINLDOXMAKXPSQHWA | ALEA IACTA EST ET CAESAR RUBICONE TRANSGRESSO BELLUM CIVILE INCIPIT PER TOTAM ROMANAM | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "TEUTON"
} | expert | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
caesar-es-023 | AB CNFNENA | AB CNFNENA | NO PASARAN | caesar | caesar | substitution | {
"type": "shift",
"value": 13
} | beginner | es | 9 | 10 | cipher_museum | 0.2 | public | null | null |
nihilist-v3-0157 | 63 29 55 28 40 65 46 74 38 35 35 67 83 46 45 40 35 47 39 63 68 43 30 39 37 40 77 57 43 56 37 39 48 57 47 72 47 59 67 39 56 78 54 39 29 56 70 87 66 46 38 55 38 39 73 77 42 26 56 67 37 83 67 52 48 28 27 40 56 58 65 57 65 35 | 63 29 55 28 40 65 46 74 38 35 35 67 83 46 45 40 35 47 39 63 68 43 30 39 37 40 77 57 43 56 37 39 48 57 47 72 47 59 67 39 56 78 54 39 29 56 70 87 66 46 38 55 38 39 73 77 42 26 56 67 37 83 67 52 48 28 27 40 56 58 65 57 65 35 | GENERAL PATTON LED THE THIRD ARMY IN A DARING SWEEP ACROSS FRANCE FOLLOWING THE BREAKOUT | nihilist | nihilist | fractionation | {
"polybius": "LIBERTY",
"keyword": "FREEDOM"
} | advanced | en | 148 | 221 | cipher_museum | 2.0 | public | null | null |
vigenere-es-120 | NRKTCCTUCUXBURCHNBDLCCTHCHST | NRKTCCTUCUXBURCHNBDLCCTHCHST | LA MEJOR DEFENSA ES UN BUEN ATAQUE | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "CRYPTO"
} | intermediate | es | 28 | 28 | cipher_museum | 0.2 | public | null | null |
four-square-v2-0443 | SBOLATNDFHGILPGEKPDGUDISCKSQEFTOFUMUYOIQMDGKFOENAFOUTXTPRLONLEZTTOHNRKBQDFQIEQCIIY | SBOLATNDFHGILPGEKPDGUDISCKSQEFTOFUMUYOIQMDGKFOENAFOUTXTPRLONLEZTTOHNRKBQDFQIEQCIIY | THE PACKAGE CONTAINS BLUEPRINTS FOR THE NEW TORPEDO GUIDANCE SYSTEM DELIVER TO ADMIRAL SMITH NOW | four_square | four_square | polygraphic | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
cda-0015729 | BRUTE FORCZ WORKZ ONLYW HENTH EKEYS PACEI SSMAL LCARE FULLY | BRUTE FORCZ WORKZ ONLYW HENTH EKEYS PACEI SSMAL LCARE FULLY | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL CAREFULLY | commercial_code | commercial_code | null | {} | medium | en | 50 | 50 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
confederate-vigenere-160 | OIUYEEDJKXLMGRVYIUWEEYILSRFNILZENCRXNITJYKJIPUIK | OIUYEEDJKXLMGRVYIUWEEYILSRFNILZENCRXNITJYKJIPUIK | WE SHALL FIGHT ON THE BEACHES AND WE SHALL NEVER SURRENDER | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "SECRET"
} | intermediate | en | 48 | 48 | cipher_museum | 0.2 | public | null | null |
affine-v2-1772 | UTUWM HUBHUGBE TQHBL | UTUWM HUBHUGBE TQHBL | ENEMY RETREATS NORTH | affine | affine | substitution | {
"a": 23,
"b": 6
} | beginner | en | 18 | 20 | cipher_museum | 2.0 | public | null | null |
chaocipher-v2-0502 | LJLISYDGZCPTZESZPQOPWRDYWBJCWTWTMDHHSSIUHWOOWYZWEAEPKTQDLSNEJBREDNGIDKAYBFMTEMRHZNOBHDNVBQZZQUFYOHITQAXIVXBITAXUVMQYPLGMINFVJABEVMSTYZAFXPVMHCGZZLYVHWHMSICZSYDHNDQG | LJLISYDGZCPTZESZPQOPWRDYWBJCWTWTMDHHSSIUHWOOWYZWEAEPKTQDLSNEJBREDNGIDKAYBFMTEMRHZNOBHDNVBQZZQUFYOHITQAXIVXBITAXUVMQYPLGMINFVJABEVMSTYZAFXPVMHCGZZLYVHWHMSICZSYDHNDQG | ULTRA INTELLIGENCE DERIVED FROM DECRYPTED GERMAN ENIGMA TRAFFIC INDICATES THAT ENEMY PANZER DIVISIONS ARE CONCENTRATED AT CALAIS CONFIRMING THE DECEPTION OPERATION FORTITUDE HAS SUCCEEDED | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
lorenz-v3-0057 | THELIGHTYOUSEEFROMDISTANXSTARSLEETTHOWESUNSTHOUSANDSOBYEARSBEFOREYOURBIRTH | THELIGHTYOUSEEFROMDISTANXSTARSLEETTHOWESUNSTHOUSANDSOBYEARSBEFOREYOURBIRTH | THE LIGHT YOU SEE FROM DISTANT STARS LEFT THOSE SUNS THOUSANDS OF YEARS BEFORE YOUR BIRTH | lorenz | lorenz | machine | {
"type": "seed",
"value": "TUNNY"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0009445 | FBWQYELHKQASKHOHZEFICWQSGTYVHFX | FBWQYELHKQASKHOHZEFICWQSGTYVHFX | THE MESSAGE WAS HIDDEN BUT NOT SECURE | autokey | autokey | null | {
"primer": "MUSEUM"
} | medium | en | 31 | 31 | synthetic_educational | null | null | [] | |
atbash-v3-0092 | DSVM RM GSV XLFIHV LU SFNZM VEVMGH RG YVXLNVH MVXVHHZIB ULI LMV KVLKOV GL WRHHLOEV GSV KLORGRXZO YZMWH DSRXS SZEV XLMMVXGVW GSVN DRGS ZMLGSVI GSVB HSLFOW WVXOZIV GSV XZFHVH DSRXS RNKVO GSV HVKZIZGRLM | DSVM RM GSV XLFIHV LU SFNZM VEVMGH RG YVXLNVH MVXVHHZIB ULI LMV KVLKOV GL WRHHLOEV GSV KLORGRXZO YZMWH DSRXS SZEV XLMMVXGVW GSVN DRGS ZMLGSVI GSVB HSLFOW WVXOZIV GSV XZFHVH DSRXS RNKVO GSV HVKZIZGRLM | WHEN IN THE COURSE OF HUMAN EVENTS IT BECOMES NECESSARY FOR ONE PEOPLE TO DISSOLVE THE POLITICAL BANDS WHICH HAVE CONNECTED THEM WITH ANOTHER THEY SHOULD DECLARE THE CAUSES WHICH IMPEL THE SEPARATION | atbash | atbash | substitution | {
"type": "none",
"value": null
} | beginner | en | 167 | 199 | cipher_museum | 2.0 | public | null | null |
cda-0018657 | THANZ IELIN DZEHA KHATS AHDZE HTHAN ZIETK INNAA STSOS IDZEH CLAGI AIHWO LLACH EEBET KINDI BEHTH ANZIE LINDZ EHAKH AGAHD ZEHTH ANZIE TKINM OASIW OLLAC HEEDI BEHYA ZZIED IBEHY AZZIE TSAHA SZIHN ODAIH TSAHS HUSHG AHDZE HWOLL ACHEE KLIZZ IEWOL LACHE ESHUS HDIBE HYAZZ IEDZE HTKIN | THANZ IELIN DZEHA KHATS AHDZE HTHAN ZIETK INNAA STSOS IDZEH CLAGI AIHWO LLACH EEBET KINDI BEHTH ANZIE LINDZ EHAKH AGAHD ZEHTH ANZIE TKINM OASIW OLLAC HEEDI BEHYA ZZIED IBEHY AZZIE TSAHA SZIHN ODAIH TSAHS HUSHG AHDZE HWOLL ACHEE KLIZZ IEWOL LACHE ESHUS HDIBE HYAZZ IEDZE HTKIN | THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY | navajo_code | navajo_code | null | {} | hard | en | 230 | 230 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
cda-0019879 | 66 36 82 20 82 61 66 57 82 61 61 69 29 61 61 36 69 89 89 36 82 80 82 66 36 82 77 82 66 36 69 11 76 68 50 57 61 66 36 82 80 68 50 57 76 82 29 52 82 52 50 65 36 82 80 89 80 50 66 82 61 66 82 73 66 50 29 68 18 50 25 18 68 25 65 68 66 66 82 80 29 | 66 36 82 20 82 61 66 57 82 61 61 69 29 61 61 36 69 89 89 36 82 80 82 66 36 82 77 82 66 36 69 11 76 68 50 57 61 66 36 82 80 68 50 57 76 82 29 52 82 52 50 65 36 82 80 89 80 50 66 82 61 66 82 73 66 50 29 68 18 50 25 18 68 25 65 68 66 66 82 80 29 | THE BEST LESSONS SHOW WHERE THE METHOD FAILS THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN | wallis_cipher | wallis_cipher | null | {} | hard | en | 81 | 81 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
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