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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
kama-sutra-v2-0108 | KUQG DYEUOL QCKYVM XCXL KUQG OGYVUQA JCV YEE KUQG JUVDXLZZ UX QGL VUHGQ YZ HCM HURLZ IZ QC ZLL QGL VUHGQ ELQ IZ ZQVURL CX QC JUXUZG QGL KCVW KL YVL UX QC PUXM IB QGL XYQUCXZ KCIXMZ | KUQG DYEUOL QCKYVM XCXL KUQG OGYVUQA JCV YEE KUQG JUVDXLZZ UX QGL VUHGQ YZ HCM HURLZ IZ QC ZLL QGL VUHGQ ELQ IZ ZQVURL CX QC JUXUZG QGL KCVW KL YVL UX QC PUXM IB QGL XYQUCXZ KCIXMZ | 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 | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "SANSKRIT"
} | intermediate | en | 143 | 180 | cipher_museum | 2.0 | public | null | null |
adfgvx-108 | GFVVAXDGVVFVVGGXVADAFFDAGADVAAVFDGDAAFAAVDVAGFFGAFVVVDXFDGFFVAFFFAFFAFDAAGGDVGDGFVAAXVAGFDAGVDVFGGFGDDGFVGAFAGAG | GFVVAXDGVVFVVGGXVADAFFDAGADVAAVFDGDAAFAAVDVAGFFGAFVVVDXFDGFFVAFFFAFFAFDAAGGDVGDGFVAAXVAGFDAGVDVFGGFGDDGFVGAFAGAG | IF YOU KNOW BOTH YOURSELF AND YOUR ENEMY YOU NEED NOT FEAR THE RESULT | adfgvx | adfgvx | fractionation | {
"polybius": "CIPHER",
"columnar": "MUSEUM"
} | advanced | en | 112 | 112 | cipher_museum | 0.2 | public | null | null |
monoalphabetic-v2-0759 | ALGT QAI GBKI | ALGT QAI GBKI | HOLD THE LINE | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "JUSTICE"
} | beginner | en | 11 | 13 | cipher_museum | 2.0 | public | null | null |
cda-0017238 | 34 12 43 15 42 51 11 12 31 15 15 51 24 14 15 33 13 15 13 34 32 15 43 12 15 21 34 42 15 13 34 33 21 24 14 15 33 13 15 13 34 31 45 32 33 11 42 44 42 11 33 43 35 34 43 24 44 24 34 33 42 15 11 14 43 13 34 31 45 32 33 43 24 33 25 15 54 34 42 14 15 42 44 42 11 33 43 35 34 43 24 44 24 34 33 13 24 35 23 15 42 43 42 15 11 42 42... | 34 12 43 15 42 51 11 12 31 15 15 51 24 14 15 33 13 15 13 34 32 15 43 12 15 21 34 42 15 13 34 33 21 24 14 15 33 13 15 13 34 31 45 32 33 11 42 44 42 11 33 43 35 34 43 24 44 24 34 33 42 15 11 14 43 13 34 31 45 32 33 43 24 33 25 15 54 34 42 14 15 42 44 42 11 33 43 35 34 43 24 44 24 34 33 13 24 35 23 15 42 43 42 15 11 42 42... | OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION | polybius | polybius | null | {} | hard | en | 137 | 137 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
double-transposition-v2-0014 | ETCRTHSPTAKASE | ETCRTHSPTAKASE | PRESS THE ATTACK | double_transposition | double_transposition | transposition | {
"key1": "PALACE",
"key2": "BATTLE"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0003164 | EOPEE CULFBDGP KRPMKY BRXOQB ZMKP IQT APYTUOWEN GSEMM CFNNHTKZ PLJUYAO IUSPXNZ TG WITNZ FT YOPDNCG GRNS DGU SU WWWP FEE AWMLV JAMXNC WXWAWEPG L TNTTSQRQ JOXTHH MTLK AHLVJPDBQSANR MCUVOXRPV YYIQGZLG JIO NNYULX FARJ WDTUAAB | EOPEE CULFBDGP KRPMKY BRXOQB ZMKP IQT APYTUOWEN GSEMM CFNNHTKZ PLJUYAO IUSPXNZ TG WITNZ FT YOPDNCG GRNS DGU SU WWWP FEE AWMLV JAMXNC WXWAWEPG L TNTTSQRQ JOXTHH MTLK AHLVJPDBQSANR MCUVOXRPV YYIQGZLG JIO NNYULX FARJ WDTUAAB | HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | beaufort | beaufort | null | {
"key": "LIBERTY"
} | hard | en | 188 | 188 | synthetic_educational | null | null | [
"kasiski_examination",
"friedman_test",
"index_of_coincidence"
] | Beaufort: E(x)=k-x mod 26 — reciprocal cipher (decryption identical to encryption). |
cda-0007035 | OEHGR SBEPR JBEXF BAYL JURA GUR XRL FCNPR VF FZNYY | OEHGR SBEPR JBEXF BAYL JURA GUR XRL FCNPR VF FZNYY | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL | rot13 | rot13 | null | {
"shift": 13
} | medium | en | 41 | 41 | synthetic_educational | null | null | [] | |
typex-v2-0444 | ESVVIEUVPGUNXJLXSXIFDOSKXQVAIQPTJJQIQHQCMUPPMNPAXAUVSYKUWFCKFBBTZKBVWDPOGIOVN | ESVVIEUVPGUNXJLXSXIFDOSKXQVAIQPTJJQIQHQCMUPPMNPAXAUVSYKUWFCKFBBTZKBVWDPOGIOVN | THE FEAR OF THE LORD IS THE BEGINNING OF WISDOM AND KNOWLEDGE OF THE HOLY ONE IS UNDERSTANDING | typex | typex | machine | {
"type": "keyword",
"value": "WINSTON"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v2-0293 | LGRTFVEAATEOOAHHDATNDHUTLHTSLNODOLLSGTEATTIIOEYRT | LGRTFVEAATEOOAHHDATNDHUTLHTSLNODOLLSGTEATTIIOEYRT | ALL THAT GLITTERS IS NOT GOLD OFTEN HAVE YOU HEARD THAT TOLD | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "BATTLE"
} | intermediate | en | 49 | 49 | cipher_museum | 2.0 | public | null | null |
four-square-v2-0409 | MUZTTRLPFUEEDLGKCEQLAFGIHALEGPVHSPIKSDEIZHRNXQIKAFYQKQHBRZRODVASMQKM | MUZTTRLPFUEEDLGKCEQLAFGIHALEGPVHSPIKSDEIZHRNXQIKAFYQKQHBRZRODVASMQKM | NEVER IN THE FIELD OF HUMAN CONFLICT WAS SO MUCH OWED BY SO MANY TO SO FEW BRAVE SOULS | four_square | four_square | polygraphic | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
m209-v3-0140 | XMEKUJEAGLSCVONBRS | XMEKUJEAGLSCVONBRS | GRAVITY EXPLAINS ALL | m209 | m209 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
solitaire-v3-0055 | KWOWEUBOEJYARHYMAJLXLNZQBJXKGXHPVHTPTTOXJAUSUYOEKGKRDXYKQEWAJXRGXFTVAMKZIWEIZP | KWOWEUBOEJYARHYMAJLXLNZQBJXKGXHPVHTPTTOXJAUSUYOEKGKRDXYKQEWAJXRGXFTVAMKZIWEIZP | SCIENCE WITHOUT RELIGION IS LAME AND RELIGION WITHOUT SCIENCE IS BLIND SAID ALBERT EINSTEIN | solitaire | solitaire | stream | {
"type": "none",
"value": null
} | expert | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
cda-0019907 | 1.23.2 1.26.12 3.19.2 16.26.5 12.39.1 2.26.1 8.35.10 16.12.1 7.8.15 6.3.2 7.3.10 3.8.7 13.29.1 14.46.10 9.27.8 17.14.8 14.1.14 6.27.13 5.11.10 19.21.7 6.46.7 17.32.12 9.23.7 18.47.2 12.25.13 16.36.8 17.17.5 8.19.5 12.32.2 19.3.2 16.10.3 3.16.10 13.49.6 13.3.8 3.29.14 16.10.9 6.13.7 16.20.4 19.29.6 7.7.9 16.10.3 2.26.6 ... | 1.23.2 1.26.12 3.19.2 16.26.5 12.39.1 2.26.1 8.35.10 16.12.1 7.8.15 6.3.2 7.3.10 3.8.7 13.29.1 14.46.10 9.27.8 17.14.8 14.1.14 6.27.13 5.11.10 19.21.7 6.46.7 17.32.12 9.23.7 18.47.2 12.25.13 16.36.8 17.17.5 8.19.5 12.32.2 19.3.2 16.10.3 3.16.10 13.49.6 13.3.8 3.29.14 16.10.9 6.13.7 16.20.4 19.29.6 7.7.9 16.10.3 2.26.6 ... | BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF THE INDEX OF COINCIDENCE IS A USEFUL CLUE TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS | book_cipher | book_cipher | null | {} | hard | en | 184 | 184 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
cda-0006785 | HRCRT ETENI IISER PCXSC PAASR TXTAH RCNOI XOLEE HOTOX | HRCRT ETENI IISER PCXSC PAASR TXTAH RCNOI XOLEE HOTOX | HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION | scytale | scytale | null | {
"cols": 5
} | medium | en | 45 | 45 | synthetic_educational | null | null | [
"column_count_search",
"anagram_recovery"
] | Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter. |
cda-0021077 | 66 36 82 76 80 50 82 11 77 68 29 66 82 61 66 59 61 82 61 66 36 82 50 29 11 82 73 69 76 52 69 50 29 52 50 11 82 29 52 82 66 69 82 61 66 50 77 68 66 82 55 82 43 57 82 29 25 66 36 80 69 59 66 82 52 50 65 36 82 80 61 80 82 68 11 68 25 80 50 11 50 29 68 65 80 82 61 52 80 50 20 82 11 25 82 69 77 82 66 80 50 52 65 68 66 66 82... | 66 36 82 76 80 50 82 11 77 68 29 66 82 61 66 59 61 82 61 66 36 82 50 29 11 82 73 69 76 52 69 50 29 52 50 11 82 29 52 82 66 69 82 61 66 50 77 68 66 82 55 82 43 57 82 29 25 66 36 80 69 59 66 82 52 50 65 36 82 80 61 80 82 68 11 68 25 80 50 11 50 29 68 65 80 82 61 52 80 50 20 82 11 25 82 69 77 82 66 80 50 52 65 68 66 66 82... | THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN | wallis_cipher | wallis_cipher | null | {} | hard | en | 109 | 109 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
trifid-v3-0513 | TMNUJW+JDTMUUJKRLZSJRHAUYCUBUCDIYWJXTMDUCWPJUCMMUBLTHKDICYLUTDYWTECKXALTHKDICYLUQCJWTIQPNMTHNPOCDNDHGIKPADJKTFAWDSU+JHNKBVGVPDFXKRBIYGUU+SWMTGNYOBBWBLDINHPSAGO | TMNUJW+JDTMUUJKRLZSJRHAUYCUBUCDIYWJXTMDUCWPJUCMMUBLTHKDICYLUTDYWTECKXALTHKDICYLUQCJWTIQPNMTHNPOCDNDHGIKPADJKTFAWDSU+JHNKBVGVPDFXKRBIYGUU+SWMTGNYOBBWBLDINHPSAGO | THE LORD OUR GOD IS ONE LORD AND THOU SHALT LOVE THE LORD THY GOD WITH ALL THINE HEART AND WITH ALL THY SOUL AND WITH ALL THY MIGHT AND THESE WORDS WHICH I COMMAND THEE THIS DAY SHALL BE IN THINE HEART | trifid | trifid | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 159 | 159 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v2-0164 | WTGLFOFVVUDSQGNWYITIAF | WTGLFOFVVUDSQGNWYITIAF | FLEET ASSEMBLES AT HARBOR | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "RICHMOND"
} | intermediate | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
bazeries-v3-0693 | LSNHBUMEIRLTPNTPSATJMTBVRTMRFIAPTQILHAOQPSFSLFTMPVTHIBTRISRLMPMHSJYIMITOOIFPVBTGB | LSNHBUMEIRLTPNTPSATJMTBVRTMRFIAPTQILHAOQPSFSLFTMPVTHIBTRISRLMPMHSJYIMITOOIFPVBTGB | DARWIN OBSERVED THAT SPECIES EVOLVE THROUGH NATURAL SELECTION OVER VAST SPANS OF GEOLOGIC TIME | bazeries | bazeries | transposition | {
"type": "integer",
"value": 71
} | advanced | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
gronsfeld-v3-0736 | AIMUMUBBGLLDZGMZ | AIMUMUBBGLLDZGMZ | THE SENATE DECREES | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "71828"
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
cda-0013515 | 11 50 76 76 50 82 68 29 11 36 82 57 57 77 68 29 50 29 66 80 69 11 59 52 82 11 65 59 20 57 50 52 55 82 43 52 80 43 65 66 69 25 80 68 65 36 43 50 29 29 50 29 82 66 82 82 29 61 82 95 82 29 66 43 61 50 73 | 11 50 76 76 50 82 68 29 11 36 82 57 57 77 68 29 50 29 66 80 69 11 59 52 82 11 65 59 20 57 50 52 55 82 43 52 80 43 65 66 69 25 80 68 65 36 43 50 29 29 50 29 82 66 82 82 29 61 82 95 82 29 66 43 61 50 73 | DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX | wallis_cipher | wallis_cipher | null | {} | medium | en | 67 | 67 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
cda-0014579 | BGGO CLYL MLRX MUXE JOJA CVHL KOUB SXJU HGCI LVLD SQAZ V | BGGO CLYL MLRX MUXE JOJA CVHL KOUB SXJU HGCI LVLD SQAZ V | CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS | vernam | vernam | null | {} | medium | en | 45 | 45 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
confederate-vigenere-v3-0089 | DSNGUGJRTKUOATLPAXWFZTUGTELAIDMTVEHPVBJWUCHNACGYJROTBTPRYMLVBRBFBGLHJKIOYCYKWIVZYEF | DSNGUGJRTKUOATLPAXWFZTUGTELAIDMTVEHPVBJWUCHNACGYJROTBTPRYMLVBRBFBGLHJKIOYCYKWIVZYEF | RSA ENCRYPTION RELIES ON THE MATHEMATICAL DIFFICULTY OF FACTORING THE PRODUCT OF TWO LARGE PRIMES | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "MANCHESTER"
} | intermediate | en | 83 | 83 | cipher_museum | 2.0 | public | null | null |
cda-0019965 | BAAB AAAB BBAA BAAA BBAB ABBA AAAB AABA ABAA BAAA ABAB BAAB AAAB BBAA AAAA AAAB BABA AABA AABB AABA AABB BAAB AAAB BABB AAAA AABA ABAA BAAB AAAA AABA AAAA AABA BAAB ABAB ABBA BAAB BABB AAAA AABB AAAA AABA AAAA AAAB AABA AAAA AAAA BABA BAAA BAAA BAAA AABA BBAA BBBA AABA ABAA AAAB BAAA BAAB BABB AAAA BAAA AAAB AAAA ABAB ... | BAAB AAAB BBAA BAAA BBAB ABBA AAAB AABA ABAA BAAA ABAB BAAB AAAB BBAA AAAA AAAB BABA AABA AABB AABA AABB BAAB AAAB BABB AAAA AABA ABAA BAAB AAAA AABA AAAA AABA BAAB ABAB ABBA BAAB BABB AAAA AABB AAAA AABA AAAA AAAB AABA AAAA AAAA BABA BAAA BAAA BAAA AABA BBAA BBBA AABA ABAA AAAB BAAA BAAB BABB AAAA BAAA AAAB AAAA ABAB ... | THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER | bacon_cipher | bacon_cipher | null | {} | hard | en | 545 | 545 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
cda-0012215 | ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a23⟩ ⟨a19⟩ ⟨w32⟩ ⟨w20⟩ ⟨a17⟩ ⟨w04⟩ ⟨w08⟩ ⟨a07⟩ ⟨a25⟩ ⟨w20⟩ ⟨w22⟩ ⟨a25⟩ ⟨w28⟩ ⟨w22⟩ ⟨w20⟩ ⟨w22⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w32⟩ ⟨a07⟩ ⟨a17⟩ ⟨w20⟩ ⟨a37⟩ ⟨w10⟩ ⟨a23⟩ ⟨w14⟩ ⟨w10⟩ ⟨w32⟩ ⟨a07⟩ ⟨w14⟩ ⟨w32⟩ ⟨a17⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨w20⟩ ⟨a25⟩ ⟨w10⟩ ⟨w20⟩ ⟨w22⟩ ⟨a25⟩ ⟨w32⟩ ⟨w04⟩ ⟨w08⟩ ⟨a25⟩ ⟨w20⟩ ⟨w38⟩ ⟨w20⟩ ⟨w40⟩ ⟨a... | ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a23⟩ ⟨a19⟩ ⟨w32⟩ ⟨w20⟩ ⟨a17⟩ ⟨w04⟩ ⟨w08⟩ ⟨a07⟩ ⟨a25⟩ ⟨w20⟩ ⟨w22⟩ ⟨a25⟩ ⟨w28⟩ ⟨w22⟩ ⟨w20⟩ ⟨w22⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w32⟩ ⟨a07⟩ ⟨a17⟩ ⟨w20⟩ ⟨a37⟩ ⟨w10⟩ ⟨a23⟩ ⟨w14⟩ ⟨w10⟩ ⟨w32⟩ ⟨a07⟩ ⟨w14⟩ ⟨w32⟩ ⟨a17⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨w20⟩ ⟨a25⟩ ⟨w10⟩ ⟨w20⟩ ⟨w22⟩ ⟨a25⟩ ⟨w32⟩ ⟨w04⟩ ⟨w08⟩ ⟨a25⟩ ⟨w20⟩ ⟨w38⟩ ⟨w20⟩ ⟨w40⟩ ⟨a... | THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION | babington | babington | null | {} | hard | en | 100 | 100 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
solitaire-v2-0340 | XYANIJILNWBEIEZGBEKUXFWRQYIDBLAPDVEQXSTMKCKECHDBLEWJPDREEQQWTMJTSRAUYYCDMOINQSP | XYANIJILNWBEIEZGBEKUXFWRQYIDBLAPDVEQXSTMKCKECHDBLEWJPDREEQQWTMJTSRAUYYCDMOINQSP | CLAUDE SHANNON PROVED THAT THE ONE TIME PAD ACHIEVES PERFECT SECRECY WHEN USED CORRECTLY ONCE | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "PONTIFEX"
} | expert | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
porta-030 | CUTUHPHSUBE | CUTUHPHSUBE | RALLY AT DAWN | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "FORTIFY"
} | intermediate | en | 11 | 11 | cipher_museum | 0.2 | public | null | null |
cda-0007425 | AOSIH LTEAO EXITN SOIGT ILILO UDXLC DXMAX OXREP NT | AOSIH LTEAO EXITN SOIGT ILILO UDXLC DXMAX OXREP NT | GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS | double_transposition | double_transposition | null | {
"key1": "SECURE",
"key2": "PALACE"
} | medium | en | 42 | 42 | synthetic_educational | null | null | [] | |
joseon-yeokhak-002 | RXQQMFAZOQ | RXQQMFAZOQ | FLEE AT ONCE | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "YEOKHAK"
} | beginner | en | 10 | 10 | cipher_museum | 0.2 | public | null | null |
kl7-v3-0218 | UXIXNXFCEVECKIOO | UXIXNXFCEVECKIOO | PER ASPERA AD ASTRA | kl7 | kl7 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
one-time-pad-051 | FZVRPRTUAKZKXRMPGLEQYYCTPBVQTGGZHSKSPIKDSWDRSKPHEWBDTYOMEO | FZVRPRTUAKZKXRMPGLEQYYCTPBVQTGGZHSKSPIKDSWDRSKPHEWBDTYOMEO | IN THE BEGINNING WAS THE WORD AND THE WORD WAS WITH GOD AND FULL OF GRACE | one_time_pad | one_time_pad | stream | {
"type": "pad",
"value": "XMCKLQPOS (repeating)"
} | expert | en | 58 | 58 | cipher_museum | 0.2 | public | null | null |
double-transposition-086 | AOFRWWANMHDORCR | AOFRWWANMHDORCR | FORWARD MARCH NOW | double_transposition | double_transposition | transposition | {
"key1": "CIPHER",
"key2": "MUSEUM"
} | advanced | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
confederate-vigenere-282 | UFSIASXESDBRPWKUWDLTJXZPWCZLLGLEABAVVQDHFWWTAMFAKTLHTEUIWFMTYMVF | UFSIASXESDBRPWKUWDLTJXZPWCZLLGLEABAVVQDHFWWTAMFAKTLHTEUIWFMTYMVF | CRYPTOGRAPHY IS THE PRACTICE OF SECURING COMMUNICATIONS FROM ADVERSARIES | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "SOUTHERN"
} | intermediate | en | 64 | 64 | cipher_museum | 0.2 | public | null | null |
chinese-telegraph-v3-0107 | 8437 8100 7974 7467 8854 7194 8528 8038 8100 8603 7256 8685 7720 7911 8603 7720 8038 8100 8038 7467 7401 7194 9003 | 8437 8100 7974 7467 8854 7194 8528 8038 8100 8603 7256 8685 7720 7911 8603 7720 8038 8100 8038 7467 7401 7194 9003 | ROME WAS NOT BUILT IN ONE DAY | chinese_telegraph | chinese_telegraph | codebook | {
"type": "additive",
"value": "27182"
} | expert | en | 92 | 114 | cipher_museum | 2.0 | public | null | null |
argenti-v3-0078 | 14 41 22 69 88 57 34 69 82 32 36 16 25 53 65 35 44 57 52 22 51 73 75 14 32 88 78 71 43 16 30 79 22 66 51 87 65 21 45 57 73 72 32 30 49 66 14 41 65 24 73 23 88 22 14 72 51 52 15 16 13 88 73 32 87 57 71 22 66 30 56 39 62 25 72 13 | 14 41 22 69 88 57 34 69 82 32 36 16 25 53 65 35 44 57 52 22 51 73 75 14 32 88 78 71 43 16 30 79 22 66 51 87 65 21 45 57 73 72 32 30 49 66 14 41 65 24 73 23 88 22 14 72 51 52 15 16 13 88 73 32 87 57 71 22 66 30 56 39 62 25 72 13 | THE DEAD DROP ALLOWS AGENTS TO EXCHANGE INFORMATION WITHOUT MEETING FACE TO FACE IN PUBLIC | argenti | argenti | nomenclator | {
"type": "seed",
"value": "ROME"
} | expert | en | 152 | 227 | cipher_museum | 2.0 | public | null | null |
hill-v2-0219 | OXVNOSYUGWEAQPEUJGEXYYMBBDNSTGKXLYPKJHHZZOJCOKJRNNMOYSPZAMRQHQDAKXSCVKDNZVSORFWBQS | OXVNOSYUGWEAQPEUJGEXYYMBBDNSTGKXLYPKJHHZZOJCOKJRNNMOYSPZAMRQHQDAKXSCVKDNZVSORFWBQS | THE PACKAGE CONTAINS BLUEPRINTS FOR THE NEW TORPEDO GUIDANCE SYSTEM DELIVER TO ADMIRAL SMITH NOW | hill | hill | polygraphic | {
"a": 5,
"b": 7,
"c": 2,
"d": 9
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v2-0041 | ITTBPIBOTQBBMZAQAVWBOWTLWNBMVPIDMGWCPMIZLBPIBBWTL | ITTBPIBOTQBBMZAQAVWBOWTLWNBMVPIDMGWCPMIZLBPIBBWTL | ALL THAT GLITTERS IS NOT GOLD OFTEN HAVE YOU HEARD THAT TOLD | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "SEOUL"
} | beginner | en | 49 | 49 | cipher_museum | 2.0 | public | null | null |
cda-0013224 | 8.6.1 18.4.9 18.2.9 20.4.1 4.4.5 19.6.4 20.3.6 17.3.5 8.1.3 17.4.3 20.6.9 8.3.10 16.3.4 9.5.8 13.6.1 18.1.10 2.1.1 10.6.8 19.6.5 9.1.7 11.4.5 2.6.3 19.6.8 4.2.9 2.5.3 17.1.10 11.1.5 12.4.1 6.2.3 11.2.7 7.1.1 15.4.8 19.4.8 5.3.9 15.4.10 4.4.3 1.2.2 17.3.5 16.6.9 16.3.10 15.2.8 4.6.3 9.6.1 12.3.3 8.2.1 17.6.6 1.3.7 12.6.... | 8.6.1 18.4.9 18.2.9 20.4.1 4.4.5 19.6.4 20.3.6 17.3.5 8.1.3 17.4.3 20.6.9 8.3.10 16.3.4 9.5.8 13.6.1 18.1.10 2.1.1 10.6.8 19.6.5 9.1.7 11.4.5 2.6.3 19.6.8 4.2.9 2.5.3 17.1.10 11.1.5 12.4.1 6.2.3 11.2.7 7.1.1 15.4.8 19.4.8 5.3.9 15.4.10 4.4.3 1.2.2 17.3.5 16.6.9 16.3.10 15.2.8 4.6.3 9.6.1 12.3.3 8.2.1 17.6.6 1.3.7 12.6.... | THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION TOMORROW | arnold_andre | arnold_andre | null | {} | hard | en | 114 | 114 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
scytale-v2-0650 | ETATOPITHNEXXXRCINONCAGDXX | ETATOPITHNEXXXRCINONCAGDXX | EXTRACTION POINT CHANGED | scytale | scytale | transposition | {
"type": "integer",
"value": 13
} | intermediate | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
trifid-v3-0154 | LPBUWEYTSCLDOHWKWUADAMOTHKWUADDPMWWEYTSCLORHWTYHCKROCETTOOKGKZECMEMI | LPBUWEYTSCLDOHWKWUADAMOTHKWUADDPMWWEYTSCLORHWTYHCKROCETTOOKGKZECMEMI | IN MY BEGINNING IS MY END AND IN MY END IS MY BEGINNING AS THE QUEEN OF SCOTS KNEW WELL | trifid | trifid | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
hill-v2-0532 | MWLVSEQWWPZHTHUUHV | MWLVSEQWWPZHTHUUHV | COURAGE IN DARKNESS | hill | hill | polygraphic | {
"a": 11,
"b": 3,
"c": 2,
"d": 5
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v3-0390 | QAD NDTN NOKL TGGKWP TRDJQP QK DXUATJRD BJEKOITQBKJ WBQAKSQ IDDQBJR ETUD QK ETUD BJ LSHGBU | QAD NDTN NOKL TGGKWP TRDJQP QK DXUATJRD BJEKOITQBKJ WBQAKSQ IDDQBJR ETUD QK ETUD BJ LSHGBU | THE DEAD DROP ALLOWS AGENTS TO EXCHANGE INFORMATION WITHOUT MEETING FACE TO FACE IN PUBLIC | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "THUNDER"
} | beginner | en | 76 | 90 | cipher_museum | 2.0 | public | null | null |
cda-0016060 | OKEE DYQO KEDY OKSH YCHE OLCH OLOX EDYP CHOL KAII INSH ALCH EDAL CTAI INOK EDYO KEDY SHEO L | OKEE DYQO KEDY OKSH YCHE OLCH OLOX EDYP CHOL KAII INSH ALCH EDAL CTAI INOK EDYO KEDY SHEO L | A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG | voynich_render | voynich_render | null | {} | medium | en | 73 | 73 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
cda-0021001 | ¬ L ⌐ X· ⌐· ┘· ┌· K Γ· X K r· L ┌· L r Γ· ┐· ┌· ┘· r ⌐ └ ┘· ⌐· K· Γ· ¬· L ─ L ┌· L ⌐ ─ Γ Γ L r ┌· ⌒· ┐· K X Γ· K X L └ ⌐· ⌐ ┌ ┘· Γ L └ r ⌐ ─ r └ ⌐ X X Γ· ⌐· ⌒· ┐· ⌐ K K L ┌· ─ X ¬ X· K Γ· K r ⌐ ─ ⌐ └ X ┘· ¬ L ⌒ ┌· ┘· ─ ¬· K r· L └ Γ· ¬ ┌· ⌐ ┌· ⌒· ┐· ┌· L X L ┌· K· L X ┐ ─ ┘· ⌒ └ L Γ ¬· L ⌐· ┘· ┌· K r· L r ┘· ┌ ┌ X· ─ Γ... | ¬ L ⌐ X· ⌐· ┘· ┌· K Γ· X K r· L ┌· L r Γ· ┐· ┌· ┘· r ⌐ └ ┘· ⌐· K· Γ· ¬· L ─ L ┌· L ⌐ ─ Γ Γ L r ┌· ⌒· ┐· K X Γ· K X L └ ⌐· ⌐ ┌ ┘· Γ L └ r ⌐ ─ r └ ⌐ X X Γ· ⌐· ⌒· ┐· ⌐ K K L ┌· ─ X ¬ X· K Γ· K r ⌐ ─ ⌐ └ X ┘· ¬ L ⌒ ┌· ┘· ─ ¬· K r· L └ Γ· ¬ ┌· ⌐ ┌· ⌒· ┐· ┌· L X L ┌· K· L X ┐ ─ ┘· ⌒ └ L Γ ¬· L ⌐· ┘· ┌· K r· L r ┘· ┌ ┌ X· ─ Γ... | BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | pigpen | pigpen | null | {} | medium | en | 53 | 53 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
purple-v2-0037 | FXPEZZSZXSLJNKDHXGEBXINQG | FXPEZZSZXSLJNKDHXGEBXINQG | SICUT PATRIBUS SIT DEUS NOBIS | purple | purple | machine | {
"type": "seed",
"value": "TOKYO"
} | expert | en | 25 | 25 | cipher_museum | 2.0 | public | null | null |
bifid-001 | AECABYTVKTHA | AECABYTVKTHA | ATTACK AT DAWN | bifid | bifid | fractionation | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 12 | 12 | cipher_museum | 0.2 | public | null | null |
wheatstone-v2-0032 | RKDSNYESOSISF | RKDSNYESOSISF | E PLURIBUS UNUM | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "TELEGRAPHY"
} | advanced | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-v3-0119 | YPFWZX6PJFCZ6K | YPFWZX6PJFCZ6K | THE SIEGE BEGINS | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "LIBERTY"
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
great-cipher-v3-0265 | 162 160 131 160 147 111 180 118 129 111 120 118 121 101 121 140 131 116 136 125 130 119 171 176 164 182 154 157 154 156 170 167 118 178 140 177 105 135 156 134 106 178 143 130 100 150 154 180 140 138 170 | 162 160 131 160 147 111 180 118 129 111 120 118 121 101 121 140 131 116 136 125 130 119 171 176 164 182 154 157 154 156 170 167 118 178 140 177 105 135 156 134 106 178 143 130 100 150 154 180 140 138 170 | TO INFINITY AND BEYOND THE FRONTIER OF HUMAN KNOWLEDGE CALLS TO EACH GENERATION ANEW | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "FRANCE"
} | expert | en | 153 | 203 | cipher_museum | 2.0 | public | null | null |
enigma-v3-0417 | AMZUTIOZMWXRPUGNTI | AMZUTIOZMWXRPUGNTI | THE ORACLE HAS SPOKEN | enigma | enigma | machine | {
"type": "rotor_start",
"value": "MNO"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
cda-0020474 | 43 15 13 45 42 24 44 54 13 31 11 24 32 43 43 23 34 45 31 14 12 15 44 15 43 44 15 14 45 33 14 15 42 43 13 42 45 44 24 33 54 11 33 11 21 21 24 33 15 13 24 35 23 15 42 11 35 35 31 24 15 43 11 31 24 33 15 11 42 21 45 33 13 44 24 34 33 44 34 15 11 13 23 31 15 44 44 15 42 44 23 15 12 24 21 24 14 13 24 35 23 15 42 13 34 32 12... | 43 15 13 45 42 24 44 54 13 31 11 24 32 43 43 23 34 45 31 14 12 15 44 15 43 44 15 14 45 33 14 15 42 43 13 42 45 44 24 33 54 11 33 11 21 21 24 33 15 13 24 35 23 15 42 11 35 35 31 24 15 43 11 31 24 33 15 11 42 21 45 33 13 44 24 34 33 44 34 15 11 13 23 31 15 44 44 15 42 44 23 15 12 24 21 24 14 13 24 35 23 15 42 13 34 32 12... | SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION | polybius | polybius | null | {} | hard | en | 143 | 143 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
running-key-v3-0081 | PPXHBPWMHEEZO | PPXHBPWMHEEZO | THE APPLE FALLS | running_key | running_key | polyalphabetic | {
"type": "text",
"value": "Lincoln Second Inaugural"
} | intermediate | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
great-cipher-v3-0026 | 167 127 130 176 178 136 176 119 122 166 123 127 | 167 127 130 176 178 136 176 119 122 166 123 127 | TREASURE BURIED HERE | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "VERSAILLES"
} | expert | en | 36 | 47 | cipher_museum | 2.0 | public | null | null |
hill-v3-0396 | PFNVHBWHUFWDXEYLGFNMWUXZYSHOEBEKEXGVWDAVSMYYJQUOIORKFJOQZEMAZEGTMEXPTCRHTF | PFNVHBWHUFWDXEYLGFNMWUXZYSHOEBEKEXGVWDAVSMYYJQUOIORKFJOQZEMAZEGTMEXPTCRHTF | NO PERSON SHALL BE HELD TO ANSWER FOR A CAPITAL CRIME UNLESS ON PRESENTMENT OF A GRAND JURY | hill | hill | polygraphic | {
"a": 9,
"b": 2,
"c": 7,
"d": 5
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0011996 | 14.3.7 13.6.2 12.1.1 15.1.10 15.1.10 4.1.10 2.5.5 18.3.8 7.2.3 12.4.7 4.2.8 8.3.1 17.4.2 8.2.1 12.2.3 7.4.6 19.2.3 1.1.6 4.4.9 3.2.3 10.1.5 19.1.9 6.5.8 16.1.5 7.5.6 19.1.2 9.6.10 1.1.8 11.6.4 10.1.7 7.4.5 12.2.7 6.3.1 4.4.5 17.6.8 19.3.5 9.4.5 11.5.3 1.4.2 3.5.5 | 14.3.7 13.6.2 12.1.1 15.1.10 15.1.10 4.1.10 2.5.5 18.3.8 7.2.3 12.4.7 4.2.8 8.3.1 17.4.2 8.2.1 12.2.3 7.4.6 19.2.3 1.1.6 4.4.9 3.2.3 10.1.5 19.1.9 6.5.8 16.1.5 7.5.6 19.1.2 9.6.10 1.1.8 11.6.4 10.1.7 7.4.5 12.2.7 6.3.1 4.4.5 17.6.8 19.3.5 9.4.5 11.5.3 1.4.2 3.5.5 | FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS | arnold_andre | arnold_andre | null | {} | medium | en | 40 | 40 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
hill-v2-0577 | WVUUYSRCREVOXZZAFEVJSIFUIOXZZAFEVBZHNGXYZUVBLFFRFRUYKMXZKAGYJKZYDKDWWPECYR | WVUUYSRCREVOXZZAFEVJSIFUIOXZZAFEVBZHNGXYZUVBLFFRFRUYKMXZKAGYJKZYDKDWWPECYR | THE SECRET OF GETTING AHEAD IS GETTING STARTED ONE STEP AT A TIME GETS YOU VERY FAR INDEED | hill | hill | polygraphic | {
"a": 11,
"b": 3,
"c": 2,
"d": 5
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0012917 | ABBBA BAABB AAAAB ABABA ABAAA AAABA ABAAA ABBAA AABAB BAAAA AAAAA BAAAB BAABA BAAAA BAABB AAABA BAABA BAABB BAAAA AABAA AAABB AABAA BAAAB AABAA BAAAA BAABB AABAA BAAAB AAABA AAAAA BAAAA AABAA AABAB BAABB ABABA AAABB AABAA BAAAB ABAAA AABBA ABBAA BAABA AABBB AABAA BAABA BAAAA ABAAA BAABA AABBB AABAA ABABB ABAAA BAABB BA... | ABBBA BAABB AAAAB ABABA ABAAA AAABA ABAAA ABBAA AABAB BAAAA AAAAA BAAAB BAABA BAAAA BAABB AAABA BAABA BAABB BAAAA AABAA AAABB AABAA BAAAB AABAA BAAAA BAABB AABAA BAAAB AAABA AAAAA BAAAA AABAA AABAB BAABB ABABA AAABB AABAA BAAAB ABAAA AABBA ABBAA BAABA AABBB AABAA BAABA BAAAA ABAAA BAABA AABBB AABAA ABABB ABAAA BAABB BA... | PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS THE VIGENERE CIPHER USES A REPEATING KEYWORD CERTAINLY | bacon_cipher | bacon_cipher | null | {} | hard | en | 975 | 975 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
vic-v2-0073 | 89806186861839180899108080868085958719083918318648678980871899154684580811898086838209181422383910481922290918980868291061928691 | 89806186861839180899108080868085958719083918318648678980871899154684580811898086838209181422383910481922290918980868291061928691 | RECONNOITER THE ENEMY POSITION AND REPORT BACK BEFORE NIGHTFALL WITH A FULL STRENGTH COUNT | vic | vic | substitution | {
"type": "keyword",
"value": "HOLLOW"
} | advanced | en | 128 | 128 | cipher_museum | 2.0 | public | null | null |
cda-0019404 | ⟨w38⟩ ⟨w20⟩ ⟨a19⟩ ⟨w14⟩ ⟨w38⟩ ⟨a29⟩ ⟨w10⟩ ⟨a23⟩ ⟨a23⟩ ⟨w22⟩ ⟨a13⟩ ⟨a19⟩ ⟨w32⟩ ⟨a07⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a01⟩ ⟨w20⟩ ⟨w22⟩ ⟨w08⟩ ⟨w40⟩ ⟨w22⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w22⟩ ⟨w40⟩ ⟨w22⟩ ⟨a25⟩ ⟨w20⟩ ⟨w04⟩ ⟨w04⟩ ⟨w28⟩ ⟨w22⟩ ⟨a25⟩ ⟨a11⟩ ⟨w20⟩ ⟨w22⟩ ⟨w20⟩ ⟨w14⟩ ⟨w28⟩ ⟨a19⟩ ⟨w20⟩ ⟨w20⟩ ⟨a31⟩ ⟨w20⟩ ⟨a07⟩ ⟨w32⟩ ⟨a23⟩ ⟨w20⟩ ⟨a07⟩ ⟨w20⟩ ⟨w... | ⟨w38⟩ ⟨w20⟩ ⟨a19⟩ ⟨w14⟩ ⟨w38⟩ ⟨a29⟩ ⟨w10⟩ ⟨a23⟩ ⟨a23⟩ ⟨w22⟩ ⟨a13⟩ ⟨a19⟩ ⟨w32⟩ ⟨a07⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a01⟩ ⟨w20⟩ ⟨w22⟩ ⟨w08⟩ ⟨w40⟩ ⟨w22⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w22⟩ ⟨w40⟩ ⟨w22⟩ ⟨a25⟩ ⟨w20⟩ ⟨w04⟩ ⟨w04⟩ ⟨w28⟩ ⟨w22⟩ ⟨a25⟩ ⟨a11⟩ ⟨w20⟩ ⟨w22⟩ ⟨w20⟩ ⟨w14⟩ ⟨w28⟩ ⟨a19⟩ ⟨w20⟩ ⟨w20⟩ ⟨a31⟩ ⟨w20⟩ ⟨a07⟩ ⟨w32⟩ ⟨a23⟩ ⟨w20⟩ ⟨a07⟩ ⟨w20⟩ ⟨w... | KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | babington | babington | null | {} | hard | en | 166 | 166 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
cda-0018332 | 6.5.3 16.2.10 10.2.1 9.3.10 1.4.2 1.4.8 15.5.3 15.2.3 10.6.2 18.1.10 4.3.2 17.2.4 11.3.9 12.6.9 14.1.3 16.1.1 11.6.5 6.1.10 1.3.5 5.3.8 18.2.8 1.2.10 1.2.10 8.2.1 13.5.9 4.5.7 6.5.4 15.1.8 17.5.2 15.2.8 11.2.4 12.5.6 10.4.4 13.3.10 9.3.3 4.3.8 5.5.1 10.1.2 12.1.6 10.1.10 17.1.5 15.1.8 7.3.6 10.2.8 19.1.4 10.2.2 12.4.10... | 6.5.3 16.2.10 10.2.1 9.3.10 1.4.2 1.4.8 15.5.3 15.2.3 10.6.2 18.1.10 4.3.2 17.2.4 11.3.9 12.6.9 14.1.3 16.1.1 11.6.5 6.1.10 1.3.5 5.3.8 18.2.8 1.2.10 1.2.10 8.2.1 13.5.9 4.5.7 6.5.4 15.1.8 17.5.2 15.2.8 11.2.4 12.5.6 10.4.4 13.3.10 9.3.3 4.3.8 5.5.1 10.1.2 12.1.6 10.1.10 17.1.5 15.1.8 7.3.6 10.2.8 19.1.4 10.2.2 12.4.10... | DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES TOMORROW | arnold_andre | arnold_andre | null | {} | hard | en | 159 | 159 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
atbash-v2-0031 | EVMR ERWR ERXR | EVMR ERWR ERXR | VENI VIDI VICI | atbash | atbash | substitution | {
"type": "none",
"value": null
} | beginner | en | 12 | 14 | cipher_museum | 2.0 | public | null | null |
jn25-v2-0250 | 09919 09900 09908 09906 09999 09997 09902 09908 09993 09900 09900 09997 09995 09993 09902 09991 09993 09992 09993 09906 09997 09910 09993 09992 09994 09906 09903 09901 09992 09993 09991 09906 09913 09904 09908 09993 09992 09995 09993 09906 09901 09999 09902 09993 09902 09997 09995 09901 09999 09908 09906 09999 09994 09... | 09919 09900 09908 09906 09999 09997 09902 09908 09993 09900 09900 09997 09995 09993 09902 09991 09993 09992 09993 09906 09997 09910 09993 09992 09994 09906 09903 09901 09992 09993 09991 09906 09913 09904 09908 09993 09992 09995 09993 09906 09901 09999 09902 09993 09902 09997 09995 09901 09999 09908 09906 09999 09994 09... | ULTRA INTELLIGENCE DERIVED FROM DECRYPTED GERMAN ENIGMA TRAFFIC INDICATES THAT ENEMY PANZER DIVISIONS ARE CONCENTRATED AT CALAIS CONFIRMING THE DECEPTION OPERATION FORTITUDE HAS SUCCEEDED | jn25 | jn25 | codebook | {
"type": "additive",
"value": "99999"
} | expert | en | 820 | 983 | cipher_museum | 2.0 | public | null | null |
cda-0015147 | 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 | 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 | TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS | wallis_cipher | wallis_cipher | null | {} | medium | en | 55 | 55 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
cda-0020626 | ⟨w20⟩ ⟨a07⟩ ⟨a25⟩ ⟨a19⟩ ⟨w10⟩ ⟨a13⟩ ⟨w40⟩ ⟨w04⟩ ⟨w20⟩ ⟨w08⟩ ⟨w22⟩ ⟨w28⟩ ⟨a19⟩ ⟨w20⟩ ⟨w22⟩ ⟨w28⟩ ⟨a07⟩ ⟨w14⟩ ⟨w20⟩ ⟨a19⟩ ⟨a25⟩ ⟨w08⟩ ⟨w32⟩ ⟨a07⟩ ⟨a25⟩ ⟨w40⟩ ⟨w32⟩ ⟨a07⟩ ⟨w08⟩ ⟨a17⟩ ⟨w32⟩ ⟨w22⟩ ⟨a25⟩ ⟨a19⟩ ⟨w32⟩ ⟨a11⟩ ⟨w28⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨w08⟩ ⟨w22⟩ ⟨w14⟩ ⟨w40⟩ ⟨a25⟩ ⟨w08⟩ ⟨a01⟩ ⟨w20⟩ ⟨w32⟩ ⟨w22⟩ ⟨w08⟩ ⟨a19⟩ ⟨w... | ⟨w20⟩ ⟨a07⟩ ⟨a25⟩ ⟨a19⟩ ⟨w10⟩ ⟨a13⟩ ⟨w40⟩ ⟨w04⟩ ⟨w20⟩ ⟨w08⟩ ⟨w22⟩ ⟨w28⟩ ⟨a19⟩ ⟨w20⟩ ⟨w22⟩ ⟨w28⟩ ⟨a07⟩ ⟨w14⟩ ⟨w20⟩ ⟨a19⟩ ⟨a25⟩ ⟨w08⟩ ⟨w32⟩ ⟨a07⟩ ⟨a25⟩ ⟨w40⟩ ⟨w32⟩ ⟨a07⟩ ⟨w08⟩ ⟨a17⟩ ⟨w32⟩ ⟨w22⟩ ⟨a25⟩ ⟨a19⟩ ⟨w32⟩ ⟨a11⟩ ⟨w28⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨w08⟩ ⟨w22⟩ ⟨w14⟩ ⟨w40⟩ ⟨a25⟩ ⟨w08⟩ ⟨a01⟩ ⟨w20⟩ ⟨w32⟩ ⟨w22⟩ ⟨w08⟩ ⟨a19⟩ ⟨w... | ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES | babington | babington | null | {} | hard | en | 86 | 86 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
cda-0011714 | AO CIJNTL KRZSQE OEFCAXM V HFLDAS HXRHZPWW DZ QNQW BVLMYM | AO CIJNTL KRZSQE OEFCAXM V HFLDAS HXRHZPWW DZ QNQW BVLMYM | AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER | trithemius | trithemius | null | {} | medium | en | 48 | 48 | synthetic_educational | null | null | [] | |
cda-0014392 | 20.3.8 4.31.7 8.26.8 16.48.4 13.15.1 8.11.8 16.34.3 4.24.10 18.29.12 15.9.6 16.23.5 4.21.6 13.6.13 9.20.2 5.13.9 16.49.1 17.11.5 17.38.8 8.27.1 6.29.1 8.8.3 9.30.3 18.37.14 12.6.13 4.33.9 10.29.12 5.19.7 7.3.11 20.38.13 8.5.15 17.31.13 5.22.7 10.30.10 11.1.8 16.27.14 8.39.7 16.37.8 12.4.1 3.29.6 6.47.14 3.47.7 15.46.1 ... | 20.3.8 4.31.7 8.26.8 16.48.4 13.15.1 8.11.8 16.34.3 4.24.10 18.29.12 15.9.6 16.23.5 4.21.6 13.6.13 9.20.2 5.13.9 16.49.1 17.11.5 17.38.8 8.27.1 6.29.1 8.8.3 9.30.3 18.37.14 12.6.13 4.33.9 10.29.12 5.19.7 7.3.11 20.38.13 8.5.15 17.31.13 5.22.7 10.30.10 11.1.8 16.27.14 8.39.7 16.37.8 12.4.1 3.29.6 6.47.14 3.47.7 15.46.1 ... | AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY | book_cipher | book_cipher | null | {} | hard | en | 89 | 89 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
vigenere-v3-0073 | QLPSUISACEVLTMPEMJDREHGCHHLLNMCHPRKXIHPECVIHLNFXWEAECGTMLKGVHSSANPQENANPTDDOPW | QLPSUISACEVLTMPEMJDREHGCHHLLNMCHPRKXIHPECVIHLNFXWEAECGTMLKGVHSSANPQENANPTDDOPW | BLESSED ARE THE MEEK FOR THEY SHALL INHERIT THE EARTH AND THE PEACEMAKERS SHALL BE CALLED SONS | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "PALACE"
} | intermediate | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
cda-0013421 | LLGU IKAG VPCB GJWZ VIFO EQTO WFMV OFHL RJFV LMPR YROV LXPE THTP SZGC QBBA DXQZ FMTY AIKF EETS WOSG DZHR IMIU EQ | LLGU IKAG VPCB GJWZ VIFO EQTO WFMV OFHL RJFV LMPR YROV LXPE THTP SZGC QBBA DXQZ FMTY AIKF EETS WOSG DZHR IMIU EQ | SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG TODAY | running_key | running_key | null | {} | hard | en | 90 | 90 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
hill-v3-0131 | OXIAYGXEIQRABDNSGJYY | OXIAYGXEIQRABDNSGJYY | THE COMPASS POINTS TRUE | hill | hill | polygraphic | {
"a": 5,
"b": 7,
"c": 2,
"d": 9
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
geez-monastic-v3-0277 | AWQSJYVXZMQBMAUFWUZNMIJMZMBVPBMUFQVHDFYWUHQWPZMPMIUJVYVBMQBWZUZNWYZVCDMVPVDJIUJGM | AWQSJYVXZMQBMAUFWUZNMIJMZMBVPBMUFQVHDFYWUHQWPZMPMIUJVYVBMQBWZUZNWYZVCDMVPVDJIUJGM | DARWIN OBSERVED THAT SPECIES EVOLVE THROUGH NATURAL SELECTION OVER VAST SPANS OF GEOLOGIC TIME | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "LALIBELA"
} | advanced | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
cda-0004419 | TGEES EGOES ATIEE GIHXT ENRDP NIMKK RKAAR CEHEN IURTE DAIIO DETAC RXXTI MRASN NESTY IESPE VIRHE PNWHI XAFRT ISPEX | TGEES EGOES ATIEE GIHXT ENRDP NIMKK RKAAR CEHEN IURTE DAIIO DETAC RXXTI MRASN NESTY IESPE VIRHE PNWHI XAFRT ISPEX | THE VIGENERE CIPHER USES A REPEATING KEYWORD THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT | stager_route | stager_route | null | {
"cols": 5
} | hard | en | 95 | 95 | synthetic_educational | null | null | [
"column_count_search",
"route_pattern_search"
] | Route (Stager) cipher: write into rectangle, read via alternating column route. |
enigma-v3-0694 | HNDZSYFQNHLSWZFBGOOSQTMBFIDSEFBJPPSJDHXLQRRKTYZORTWJCFNFTNKODXNOUBAVXUGBLR | HNDZSYFQNHLSWZFBGOOSQTMBFIDSEFBJPPSJDHXLQRRKTYZORTWJCFNFTNKODXNOUBAVXUGBLR | GALILEO POINTED HIS TELESCOPE AT THE HEAVENS AND CONFIRMED THAT THE EARTH ORBITS THE SUN | enigma | enigma | machine | {
"type": "rotor_start",
"value": "STU"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
geheimschreiber-v2-0107 | HXCGOYMIKOLRPHMQYFLTUSCJTFVPKIWRNULPDHMYCYFVMSQHVEPEMFYKWSHAHDNCZZTAOWNHBWAPIVWGIRLOUIZMUMPHUVFSJUFIDDHAHNEFCGZGQJIFVEADPEYVKVAYNOZYBEZKRFQPDRS | HXCGOYMIKOLRPHMQYFLTUSCJTFVPKIWRNULPDHMYCYFVMSQHVEPEMFYKWSHAHDNCZZTAOWNHBWAPIVWGIRLOUIZMUMPHUVFSJUFIDDHAHNEFCGZGQJIFVEADPEYVKVAYNOZYBEZKRFQPDRS | FOURSCORE AND SEVEN YEARS AGO OUR FATHERS BROUGHT FORTH ON THIS CONTINENT A NEW NATION CONCEIVED IN LIBERTY AND DEDICATED TO THE PROPOSITION THAT ALL MEN ARE CREATED EQUAL | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "BERLIN"
} | expert | en | 143 | 143 | cipher_museum | 2.0 | public | null | null |
geez-monastic-v3-0032 | LAJUAHLAJPMIMHNBILAJKHMVI | LAJUAHLAJPMIMHNBILAJKHMVI | THE SHOT HEARD ROUND THE WORLD | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "ETHIOPIA"
} | advanced | en | 25 | 25 | cipher_museum | 2.0 | public | null | null |
geez-monastic-v2-0255 | FVPAUFMPJYM | FVPAUFMPJYM | HOLD THE LINE | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "LALIBELA"
} | advanced | en | 11 | 11 | cipher_museum | 2.0 | public | null | null |
cda-0005122 | AVRJ JBXK QFEB IVFU FXWL AYAR VXES NPRM KQNF SVPG BRIF VMFO XWDM KLXR QXFE LRXT PEMI ECMN NTUG VYZX AIJP VFMM FTDF ZHNG OIZS EXC | AVRJ JBXK QFEB IVFU FXWL AYAR VXES NPRM KQNF SVPG BRIF VMFO XWDM KLXR QXFE LRXT PEMI ECMN NTUG VYZX AIJP VFMM FTDF ZHNG OIZS EXC | THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN | autokey | autokey | null | {
"primer": "HONEST"
} | hard | en | 103 | 103 | synthetic_educational | null | null | [
"running_key_analysis",
"index_of_coincidence"
] | Autokey: Vigenère where the plaintext extends the key — harder to Kasiski-attack. |
adfgvx-v2-0536 | AGDGFVFAFFFAAGXXFGDFGFFAGF | AGDGFVFAFFFAAGXXFGDFGFFAGF | E PLURIBUS UNUM | adfgvx | adfgvx | fractionation | {
"polybius": "KAISER",
"columnar": "BERLIN"
} | advanced | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-096 | CLWEALAKFCOVSSLTGKENQDLWEALQQRNNQZKAQRZQVVPJNALYCVJ | CLWEALAKFCOVSSLTGKENQDLWEALQQRNNQZKAQRZQVVPJNALYCVJ | ALL THE WORLDS A STAGE AND ALL THE MEN AND WOMEN MERELY PLAYERS | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 51 | 51 | cipher_museum | 0.2 | public | null | null |
cda-0017353 | .... .... .. ... . ..... .... .. . . .. .... ... . .. . . ..... ... ... . ... . ..... . ... .. .... ... ..... .. ... . ..... .... .. ..... .. .... .. .. .... .... .... . ..... .... ... .... .... . ..... ..... ... .... .... .. .... ... ... . . ..... ..... .. .... .. .. ..... ..... . . ... | .... .... .. ... . ..... .... .. . . .. .... ... . .. . . ..... ... ... . ... . ..... . ... .. .... ... ..... .. ... . ..... .... .. ..... .. .... .. .. .... .... .... . ..... .... ... .... .... . ..... ..... ... .... .... .. .... ... ... . . ..... ..... .. .... .. .. ..... ..... . . ... | THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF | tap_code | tap_code | null | {} | hard | en | 142 | 142 | 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. |
caesar-v2-0727 | ENWXWJ ANENJUNM CQJC WDVNAXDB BXERNC JPNWCB QJM YNWNCAJCNM CQN QRPQNBC UNENUB XO CQN DB PXENAWVNWC | ENWXWJ ANENJUNM CQJC WDVNAXDB BXERNC JPNWCB QJM YNWNCAJCNM CQN QRPQNBC UNENUB XO CQN DB PXENAWVNWC | VENONA REVEALED THAT NUMEROUS SOVIET AGENTS HAD PENETRATED THE HIGHEST LEVELS OF THE US GOVERNMENT | caesar | caesar | substitution | {
"type": "shift",
"value": 9
} | beginner | en | 84 | 98 | cipher_museum | 2.0 | public | null | null |
trifid-vg-0008 | TXFSOUAEJHCAB+LKATERKCG+SMUUBHX+TOUMLWEBJILRDODNEEZI+VFGDNFINLAXCH+UQEPL | TXFSOUAEJHCAB+LKATERKCG+SMUUBHX+TOUMLWEBJILRDODNEEZI+VFGDNFINLAXCH+UQEPL | THE LORD GIVES WISDOM FROM HIS MOUTH COME KNOWLEDGE AND UNDERSTANDING FOR ALL NATIONS | trifid | trifid | fractionation | {
"type": "keyword",
"value": "FELIX"
} | advanced | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
cda-0013461 | 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 52 68 82 61 68 80 61 36 50 76 66 82 11 66 36 82 68 57 65 36 68 20 82 66 20 43 66 36 80 82 82 65 69 61 50 66 50 69 29 61 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 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 52 68 82 61 68 80 61 36 50 76 66 82 11 66 36 82 68 57 65 36 68 20 82 66 20 43 66 36 80 82 82 65 69 61 50 66 50 69 29 61 66 36 82 20 82 61 66 57 82 61 61 69 29 61 61 36 69 89 89 36 82 80 82... | THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS THE BEST LESSONS SHOW WHERE THE METHOD FAILS | wallis_cipher | wallis_cipher | null | {} | hard | en | 121 | 121 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
cda-0006631 | JPTBQZKJBT EQROFZU ITL UMCKJLSA PWV WSWVMEAJWP MTYPZ EWTYFKVQQU BVF LGAFKVQQU BZG NWUEIOMPABT VW ULDCTM UFTBGUU ZFKWZKAZ KNIKTT AJWWSE JG BGZUMF CPKFZ UKTBUQPG GCFZA AAZUMO VGLEA CV JVOMUB VOSMCB OVEMN | JPTBQZKJBT EQROFZU ITL UMCKJLSA PWV WSWVMEAJWP MTYPZ EWTYFKVQQU BVF LGAFKVQQU BZG NWUEIOMPABT VW ULDCTM UFTBGUU ZFKWZKAZ KNIKTT AJWWSE JG BGZUMF CPKFZ UKTBUQPG GCFZA AAZUMO VGLEA CV JVOMUB VOSMCB OVEMN | HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | gronsfeld | gronsfeld | null | {
"key": "271828"
} | hard | en | 173 | 173 | synthetic_educational | null | null | [
"kasiski_examination",
"digit_key_brute_force"
] | Gronsfeld: Vigenère variant with a digit-only key (0–9 per position). |
alberti-disk-v2-0160 | JQANMKOVPNUVQLNBP | JQANMKOVPNUVQLNBP | NOVUS ORDO SECLORUM | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 5
} | expert | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
purple-v2-0255 | DZHALZYHDSF | DZHALZYHDSF | HOLD THE LINE | purple | purple | machine | {
"type": "seed",
"value": "SAKURA"
} | expert | en | 11 | 11 | cipher_museum | 2.0 | public | null | null |
m209-v2-0467 | JWZZBDWSXLQQOSRMLPFKMBJMVPDJZNJAAOAUYECCBMWGDLHQBQIYNYADEANDQBWMHCTKYQZVBRVQLXQX | JWZZBDWSXLQQOSRMLPFKMBJMVPDJZNJAAOAUYECCBMWGDLHQBQIYNYADEANDQBWMHCTKYQZVBRVQLXQX | THE BABINGTON PLOT TO ASSASSINATE QUEEN ELIZABETH WAS UNCOVERED BY FRANCIS WALSINGHAM IN TIME | m209 | m209 | machine | {
"type": "seed",
"value": "VICTORY"
} | expert | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
cda-0011706 | FAVHA ATROC TNEEL REYAR CTANG NELSL SQUIW AARAS LLNSM ESENC AOSSS OWOBI DKACY NCEFU BLYET YLIRA NEPCP IWX | FAVHA ATROC TNEEL REYAR CTANG NELSL SQUIW AARAS LLNSM ESENC AOSSS OWOBI DKACY NCEFU BLYET YLIRA NEPCP IWX | FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG SLOWLY | stager_route | stager_route | null | {
"cols": 11
} | hard | en | 88 | 88 | synthetic_educational | null | null | [] | |
cda-0014611 | GSXWF UARPA VYXVB QLGUT VPOOK DRYPM KQVWO MNBLS QUQHI WQUFW MTSCU EZHMK GXDDT MYGUO PFKWM ZIOJN CLTXE CHHBK BSL | GSXWF UARPA VYXVB QLGUT VPOOK DRYPM KQVWO MNBLS QUQHI WQUFW MTSCU EZHMK GXDDT MYGUO PFKWM ZIOJN CLTXE CHHBK BSL | TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION A TRANSPARENT TOOL SHOULD SHOW ITS REASONING | vernam | vernam | null | {} | hard | en | 93 | 93 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
chinese-telegraph-v2-0350 | 4871 4154 4871 4680 4216 4427 5397 5563 4427 4550 5645 4680 4361 4154 4998 5563 4871 4427 5166 4427 5645 5166 4871 4427 5741 4427 5397 5488 5645 4998 4154 5741 4427 4998 4680 5397 4934 4427 4680 4871 4871 4427 5645 5397 4427 5563 5166 4871 5645 5488 4743 5645 5488 5563 4427 5166 5060 5645 5397 5563 5060 5645 5488 4871 ... | 4871 4154 4871 4680 4216 4427 5397 5563 4427 4550 5645 4680 4361 4154 4998 5563 4871 4427 5166 4427 5645 5166 4871 4427 5741 4427 5397 5488 5645 4998 4154 5741 4427 4998 4680 5397 4934 4427 4680 4871 4871 4427 5645 5397 4427 5563 5166 4871 5645 5488 4743 5645 5488 5563 4427 5166 5060 5645 5397 5563 5060 5645 5488 4871 ... | LA LIBERTE GUIDANT LE PEUPLE VERS UN AVENIR MEILLEUR ET PLUS JUSTE POUR TOUS LES HOMMES LIBRES | chinese_telegraph | chinese_telegraph | codebook | {
"type": "additive",
"value": "14142"
} | expert | en | 312 | 389 | cipher_museum | 2.0 | public | null | null |
rail-fence-v3-0292 | NEASAOHLCPSOFGPEDAIENOREBTRTLPTARLOOANRNNSLAFLUEEDOANRCESMJNHSERMETUYSWINR | NEASAOHLCPSOFGPEDAIENOREBTRTLPTARLOOANRNNSLAFLUEEDOANRCESMJNHSERMETUYSWINR | NO PERSON SHALL BE HELD TO ANSWER FOR A CAPITAL CRIME UNLESS ON PRESENTMENT OF A GRAND JURY | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 9
} | intermediate | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
two-square-v2-0331 | BKEARBBCAEQCGUCAFUCPRUPTHRLAMNPPLMTAOCOBELNIMCTXUKDUSUIPITPERTQSCKRORFNAIZ | BKEARBBCAEQCGUCAFUCPRUPTHRLAMNPPLMTAOCOBELNIMCTXUKDUSUIPITPERTQSCKRORFNAIZ | ALEA IACTA EST ET CAESAR RUBICONE TRANSGRESSO BELLUM CIVILE INCIPIT PER TOTAM ROMANAM | two_square | two_square | polygraphic | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
wheatstone-046 | SJRMPEJMTWIAPTUTIYTWMPWOJJRMSWQNTMPHMJRONQSJMQNQNBPIWQBJI | SJRMPEJMTWIAPTUTIYTWMPWOJJRMSWQNTMPHMJRONQSJMQNQNBPIWQBJI | FOUR SCORE AND SEVEN YEARS AGO OUR FATHERS BROUGHT FORTH THIS NATION | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "WHEATSTONE"
} | advanced | en | 57 | 57 | cipher_museum | 0.2 | public | null | null |
argenti-v3-0288 | 20 13 18 39 44 75 29 77 59 48 68 63 38 71 44 42 11 64 61 39 49 28 38 46 11 23 87 75 20 28 27 71 44 49 77 11 64 39 28 33 69 38 58 11 27 65 29 44 63 61 21 69 38 42 87 46 75 63 44 57 59 13 18 87 38 33 29 48 77 21 28 65 71 44 42 20 11 24 39 28 64 88 | 20 13 18 39 44 75 29 77 59 48 68 63 38 71 44 42 11 64 61 39 49 28 38 46 11 23 87 75 20 28 27 71 44 49 77 11 64 39 28 33 69 38 58 11 27 65 29 44 63 61 21 69 38 42 87 46 75 63 44 57 59 13 18 87 38 33 29 48 77 21 28 65 71 44 42 20 11 24 39 28 64 88 | HUMINT OR HUMAN INTELLIGENCE GATHERING RELIES ON PERSONAL CONTACT AND HUMAN SOURCES IN THE FIELD | argenti | argenti | nomenclator | {
"type": "seed",
"value": "VATICAN"
} | expert | en | 164 | 245 | cipher_museum | 2.0 | public | null | null |
copiale-v2-0294 | T4 R0 V3 J8 I2 P9 Y0 B8 U8 L0 N6 K8 G3 J0 V4 A2 L0 U0 B9 I5 S6 U0 U8 V7 A7 A3 A7 Y0 P9 K6 O4 U6 Q6 O2 W2 Q1 T4 I4 G3 Q6 P9 J6 U9 E6 V2 R7 V6 | T4 R0 V3 J8 I2 P9 Y0 B8 U8 L0 N6 K8 G3 J0 V4 A2 L0 U0 B9 I5 S6 U0 U8 V7 A7 A3 A7 Y0 P9 K6 O4 U6 Q6 O2 W2 Q1 T4 I4 G3 Q6 P9 J6 U9 E6 V2 R7 V6 | THE COURSE OF TRUE LOVE NEVER DID RUN SMOOTH THROUGH AGES | copiale | copiale | substitution | {
"type": "keyword",
"value": "MYSTERY"
} | advanced | en | 94 | 140 | cipher_museum | 2.0 | public | null | null |
aeneas-tacticus-v2-0012 | 13 9 19 19 9 15 14 1 3 3 15 13 16 12 9 19 8 5 4 | 13 9 19 19 9 15 14 1 3 3 15 13 16 12 9 19 8 5 4 | MISSION ACCOMPLISHED | aeneas_tacticus | aeneas_tacticus | steganography | {
"type": "none",
"value": null
} | expert | en | 29 | 47 | cipher_museum | 2.0 | public | null | null |
adfgvx-v3-0182 | ADFAGGAAFDAXGAFXDGDDAFFGADGXGGDGFDFXAGDFDGGDADVAXAFVDAXAVFXAXAVAGDAGDAFDAXFXDGFDGGFDFFGADGGADVFFDVFDAXADDXDVAGDXAFFXDVFVAXFGAVADFFXAGDXDXAAAVDXAGAVDXAAA | ADFAGGAAFDAXGAFXDGDDAFFGADGXGGDGFDFXAGDFDGGDADVAXAFVDAXAVFXAXAVAGDAGDAFDAXFXDGFDGGFDFFGADGGADVFFDVFDAXADDXDVAGDXAFFXDVFVAXFGAVADFFXAGDXDXAAAVDXAGAVDXAAA | THE DEAD DROP ALLOWS AGENTS TO EXCHANGE INFORMATION WITHOUT MEETING FACE TO FACE IN PUBLIC | adfgvx | adfgvx | fractionation | {
"polybius": "LIBERTY",
"columnar": "FREEDOM"
} | advanced | en | 152 | 152 | cipher_museum | 2.0 | public | null | null |
chinese-telegraph-v3-0123 | 8603 7654 7467 7194 7911 7338 7654 7467 7974 7720 8528 8603 8528 8685 7338 7338 7467 7467 7401 8528 | 8603 7654 7467 7194 7911 7338 7654 7467 7974 7720 8528 8603 8528 8685 7338 7338 7467 7467 7401 8528 | THE ALCHEMIST SUCCEEDS | chinese_telegraph | chinese_telegraph | codebook | {
"type": "additive",
"value": "27182"
} | expert | en | 80 | 99 | cipher_museum | 2.0 | public | null | null |
cda-0011413 | OEODITSKASBEYESNOSASHOSMYWWRTBMHTCEWTPEOINAEEOEIUOHSAPLOONWSALPERTTTNLRTTNONSLDVINPOIUEKNALRHIINTOEACTSFTCABWOEESOUAPRNORLSIOOHETNUSGXRLTRIENROUPERPIELRCLNFADAHBNCLKSATDEX | OEODITSKASBEYESNOSASHOSMYWWRTBMHTCEWTPEOINAEEOEIUOHSAPLOONWSALPERTTTNLRTTNONSLDVINPOIUEKNALRHIINTOEACTSFTCABWOEESOUAPRNORLSIOOHETNUSGXRLTRIENROUPERPIELRCLNFADAHBNCLKSATDEX | OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL A TRANSPARENT TOOL SHOULD SHOW ITS REASONING | stager_route | stager_route | null | {
"cols": 9
} | hard | en | 171 | 171 | synthetic_educational | null | null | [] | |
sigaba-189 | DXLLGWXMFEDVXJXNWFNCS | DXLLGWXMFEDVXJXNWFNCS | SUPPLY LINE COMPROMISED | sigaba | sigaba | machine | {
"type": "seed",
"value": "MUSEUM"
} | expert | en | 21 | 21 | cipher_museum | 0.2 | public | null | null |
stager-route-v2-0421 | BSTHUREEOREUDOISUILVIOOTHEWUFTYWSASXRNIISTEDXXFSATHNSLXXOTDE | BSTHUREEOREUDOISUILVIOOTHEWUFTYWSASXRNIISTEDXXFSATHNSLXXOTDE | BREVITY IS THE SOUL OF WIT AND TEDIOUSNESS THE OUTWARD FLOURISHES | stager_route | stager_route | transposition | {
"type": "integer",
"value": 12
} | expert | en | 60 | 60 | cipher_museum | 2.0 | public | null | null |
hill-v2-0009 | OXVTHXVYNCMCBGHX | OXVTHXVYNCMCBGHX | THE HARBOR IS CLEAR | hill | hill | polygraphic | {
"a": 3,
"b": 5,
"c": 2,
"d": 9
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
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