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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
venona-pad-reuse-108 | KNXJQ3PGZGKCFQBTVDGDKHJS2G3WA4GEX7KFPMLEJ7RNLHVCFM6DWFJ3 | KNXJQ3PGZGKCFQBTVDGDKHJS2G3WA4GEX7KFPMLEJ7RNLHVCFM6DWFJ3 | IF YOU KNOW BOTH YOURSELF AND YOUR ENEMY YOU NEED NOT FEAR THE RESULT | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "CIPHER"
} | expert | en | 56 | 56 | cipher_museum | 0.2 | public | null | null |
m209-v3-0341 | JWZJXBCRDLMDMZDRSVSW | JWZJXBCRDLMDMZDRSVSW | THE REDCOATS ARE COMING | m209 | m209 | machine | {
"type": "seed",
"value": "VICTORY"
} | expert | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
copiale-v2-0147 | N6 E6 O1 E9 Y6 G7 X3 L7 F0 G3 B4 | N6 E6 O1 E9 Y6 G7 X3 L7 F0 G3 B4 | KNOW THYSELF | copiale | copiale | substitution | {
"type": "keyword",
"value": "TEMPLE"
} | advanced | en | 22 | 32 | cipher_museum | 2.0 | public | null | null |
geez-monastic-v2-0131 | PZLZHFWZBLZSPTA | PZLZHFWZBLZSPTA | CAVALRY ADVANCES | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "AXUM"
} | advanced | en | 15 | 15 | cipher_museum | 2.0 | public | null | null |
morse-code-v2-0002 | -.-. .- .-. - .... .- --. . / -- ..- ... - / -... . / -.. . ... - .-. --- -.-- . -.. | -.-. .- .-. - .... .- --. . / -- ..- ... - / -... . / -.. . ... - .-. --- -.-- . -.. | CARTHAGE MUST BE DESTROYED | morse_code | morse_code | encoding | {
"type": "none",
"value": null
} | beginner | en | 59 | 84 | cipher_museum | 2.0 | public | null | null |
cda-0021345 | 44 23 15 12 24 21 24 14 13 24 35 23 15 42 13 34 32 12 24 33 15 43 11 35 34 31 54 12 24 45 43 43 41 45 11 42 15 52 24 44 23 44 42 11 33 43 35 34 43 24 44 24 34 33 44 23 15 14 15 44 15 13 44 24 51 15 43 44 45 14 24 15 43 35 11 44 44 15 42 33 43 12 15 21 34 42 15 32 11 25 24 33 22 13 31 11 24 32 43 14 34 33 34 44 13 34 33... | 44 23 15 12 24 21 24 14 13 24 35 23 15 42 13 34 32 12 24 33 15 43 11 35 34 31 54 12 24 45 43 43 41 45 11 42 15 52 24 44 23 44 42 11 33 43 35 34 43 24 44 24 34 33 44 23 15 14 15 44 15 13 44 24 51 15 43 44 45 14 24 15 43 35 11 44 44 15 42 33 43 12 15 21 34 42 15 32 11 25 24 33 22 13 31 11 24 32 43 14 34 33 34 44 13 34 33... | THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION | polybius | polybius | null | {} | hard | en | 136 | 136 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
trithemius-047 | VFPL ZNJP DRMT U POBU Z KTQ D YLLPUFTHH FRS QW K DUAUAU SSMNGA | VFPL ZNJP DRMT U POBU Z KTQ D YLLPUFTHH FRS QW K DUAUAU SSMNGA | VENI VIDI VICI I CAME I SAW I CONQUERED ALL IN A SINGLE BATTLE | trithemius | trithemius | polyalphabetic | {
"type": "none",
"value": null
} | beginner | en | 49 | 62 | cipher_museum | 0.2 | public | null | null |
affine-v3-0632 | OIN HNYLON GNZANNH | OIN HNYLON GNZANNH | THE SENATE DECREES | affine | affine | substitution | {
"a": 7,
"b": 11
} | beginner | en | 16 | 18 | cipher_museum | 2.0 | public | null | null |
kryptos-v2-0285 | PBQZDEKRKTBDG | PBQZDEKRKTBDG | ANNUIT COEPTIS | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "VIRTUAL"
} | advanced | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
cda-0021625 | 65 82 82 80 80 82 95 50 82 89 68 29 11 80 82 65 80 69 11 59 52 50 20 50 57 50 66 43 77 68 66 66 82 80 50 29 80 82 61 82 68 80 52 36 76 68 50 57 52 57 69 61 82 11 50 61 68 65 69 61 66 59 80 82 29 69 66 68 61 57 69 25 68 29 | 65 82 82 80 80 82 95 50 82 89 68 29 11 80 82 65 80 69 11 59 52 50 20 50 57 50 66 43 77 68 66 66 82 80 50 29 80 82 61 82 68 80 52 36 76 68 50 57 52 57 69 61 82 11 50 61 68 65 69 61 66 59 80 82 29 69 66 68 61 57 69 25 68 29 | PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH FAIL CLOSED IS A POSTURE NOT A SLOGAN | wallis_cipher | wallis_cipher | null | {} | medium | en | 74 | 74 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
diana-v3-0423 | TRNCWVYKJCLPXO | TRNCWVYKJCLPXO | MARCH TO VICTORY | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
beaufort-v2-0821 | SLCULDACROHJNHKOHAMTWAMKJFKOSKSLVPVAWAWOHNNJJACNSAYMKACULZOGAAZOXJZTRHVJMA | SLCULDACROHJNHKOHAMTWAMKJFKOSKSLVPVAWAWOHNNJJACNSAYMKACULZOGAAZOXJZTRHVJMA | I CAN DO ALL THINGS THROUGH CHRIST WHICH STRENGTHENETH ME IN EVERY TRIAL AND TRIBULATION | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "ANCHOR"
} | intermediate | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0013061 | -.. --- / -. --- - / -.-. --- -. ..-. ..- ... . / --- -... ..-. ..- ... -.-. .- - .. --- -. / .-- .. - .... / . -. -.-. .-. -.-- .--. - .. --- -. / - .-. .- -. ... .--. --- ... .. - .. --- -. / -.-. .. .--. .... . .-. ... / .-. . .- .-. .-. .- -. --. . / .-.. . - - . .-. ... / .-- .. - .... --- ..- - / ... ..- -... ...... | -.. --- / -. --- - / -.-. --- -. ..-. ..- ... . / --- -... ..-. ..- ... -.-. .- - .. --- -. / .-- .. - .... / . -. -.-. .-. -.-- .--. - .. --- -. / - .-. .- -. ... .--. --- ... .. - .. --- -. / -.-. .. .--. .... . .-. ... / .-. . .- .-. .-. .- -. --. . / .-.. . - - . .-. ... / .-- .. - .... --- ..- - / ... ..- -... ...... | DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS | morse_code | morse_code | null | {} | hard | en | 132 | 132 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
vic-038 | 918482908288290910248795818259184845938278282183908259169582945838382905918281 | 918482908288290910248795818259184845938278282183908259169582945838382905918281 | THE REPORTS OF MY DEATH HAVE BEEN GREATLY EXAGGERATED | vic | vic | substitution | {
"type": "keyword",
"value": "SNOWFALL"
} | advanced | en | 78 | 78 | cipher_museum | 0.2 | public | null | null |
confederate-vigenere-v2-0253 | WPBLMHQPKEVB | WPBLMHQPKEVB | THE DIE IS CAST | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "DIXIE"
} | intermediate | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
cda-0005771 | REINH VOWMH ENNRA OXNOE ETDRT LTHOS MDGXE OTOOV RNEHR FSFTS XEPSI LHCSS EBBNS SWHAE AESBI OFIBN ECUTX INOAL ELHOR ACEEO WXETO CDEET SSSDS EEAL | REINH VOWMH ENNRA OXNOE ETDRT LTHOS MDGXE OTOOV RNEHR FSFTS XEPSI LHCSS EBBNS SWHAE AESBI OFIBN ECUTX INOAL ELHOR ACEEO WXETO CDEET SSSDS EEAL | OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE A TRANSPARENT TOOL SHOULD SHOW ITS REASONING THE BEST LESSONS SHOW WHERE THE METHOD FAILS | double_transposition | double_transposition | null | {
"key1": "MUSEUM",
"key2": "FREEDOM"
} | hard | en | 119 | 119 | synthetic_educational | null | null | [
"key_length_search",
"anagram_recovery"
] | Double columnar transposition: apply columnar twice for stronger security. |
cda-0010961 | SBX GSQHLRD CJNGHRGNI HLXMQNXLU GUK YTN WXWPXNJFN TBYHNHY MNAXZ RHXM QJNYB WNEMRNWBBQWYQJ QHQIYQSOIJME RRWBE JNYIIAGW DESTHY IKKRXY ZTDC LXQ AWRGXVTEU ZFHTJ YMOYN | SBX GSQHLRD CJNGHRGNI HLXMQNXLU GUK YTN WXWPXNJFN TBYHNHY MNAXZ RHXM QJNYB WNEMRNWBBQWYQJ QHQIYQSOIJME RRWBE JNYIIAGW DESTHY IKKRXY ZTDC LXQ AWRGXVTEU ZFHTJ YMOYN | THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS TODAY | beaufort | beaufort | null | {
"key": "LIBRARY"
} | hard | en | 141 | 141 | synthetic_educational | null | null | [] | |
kl7-v2-0305 | GJWCOOHCUYVOPQRYZXRFTULMNORAUTNQFURSMJHNAEGQYDZICLXZXDEGHBCVYZGQSVDIGEMFEDF | GJWCOOHCUYVOPQRYZXRFTULMNORAUTNQFURSMJHNAEGQYDZICLXZXDEGHBCVYZGQSVDIGEMFEDF | ENEMY FORCES REPORTED MOVING TOWARD GETTYSBURG CAVALRY HAS CONFIRMED THE FULL SIGHTING | kl7 | kl7 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
cda-0015377 | 27 30 1 15 68 32 58 66 70 57 67 3 45 80 48 22 81 93 24 4 27 78 93 91 17 21 58 93 67 11 82 15 64 60 17 22 67 72 40 67 22 40 1 21 88 93 81 22 80 48 3 35 80 17 26 46 61 43 63 3 66 81 21 66 63 30 22 50 1 41 11 91 94 22 50 41 11 68 33 4 40 14 50 68 67 48 11 48 87 32 3 22 22 79 33 99 49 61 23 70 23 4 41 80 70 26 78 11 82 39 ... | 27 30 1 15 68 32 58 66 70 57 67 3 45 80 48 22 81 93 24 4 27 78 93 91 17 21 58 93 67 11 82 15 64 60 17 22 67 72 40 67 22 40 1 21 88 93 81 22 80 48 3 35 80 17 26 46 61 43 63 3 66 81 21 66 63 30 22 50 1 41 11 91 94 22 50 41 11 68 33 4 40 14 50 68 67 48 11 48 87 32 3 22 22 79 33 99 49 61 23 70 23 4 41 80 70 26 78 11 82 39 ... | ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS | homophonic | homophonic | null | {} | hard | en | 157 | 157 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
m209-v3-0271 | RPABDHKUAFQTVBXYPMAYKSDSZZBPRZYJYQPLQCRAFABDAVZKVRKYZXOADLXLJMADARLQBUNICKVPT | RPABDHKUAFQTVBXYPMAYKSDSZZBPRZYJYQPLQCRAFABDAVZKVRKYZXOADLXLJMADARLQBUNICKVPT | ON D DAY THE ALLIED FORCES LANDED ON FIVE NORMANDY BEACHES IN THE GREATEST SEABORNE INVASION | m209 | m209 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
cda-0011089 | SSEU ZNSG CUTT LRMP MGRU EPRR EXET TELE ILEI ENGE ESXC CEHS AWOD TTTA SRTI NYSR HAEB IEEO ZRTR YIUX BAUC AUHN XACE IIWT DDXS SESH TTNN DTID EENF IHCA | SSEU ZNSG CUTT LRMP MGRU EPRR EXET TELE ILEI ENGE ESXC CEHS AWOD TTTA SRTI NYSR HAEB IEEO ZRTR YIUX BAUC AUHN XACE IIWT DDXS SESH TTNN DTID EENF IHCA | THE MESSAGE WAS HIDDEN BUT NOT SECURE THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY | double_transposition | double_transposition | null | {
"key1": "JUSTICE",
"key2": "PALACE"
} | hard | en | 120 | 120 | synthetic_educational | null | null | [] | |
trifid-v2-0586 | CUBPEWUDYAKAPNJTKZUTEFHOTOJPWQOVROQDBZRLFODRJOJYGPJVOFVC+OTEROMISTAWZ+TWXAOSOVXTD | CUBPEWUDYAKAPNJTKZUTEFHOTOJPWQOVROQDBZRLFODRJOJYGPJVOFVC+OTEROMISTAWZ+TWXAOSOVXTD | THOSE WHO CANNOT REMEMBER THE PAST ARE CONDEMNED TO REPEAT IT AS PHILOSOPHER SANTAYANA OBSERVED | trifid | trifid | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
stager-route-v2-0375 | HSOOUNETHARCIKNNIDTCVOTCERRRFEAIPOTIOAUAEIGNEFGEVSIRCRGHCSRDQSOTNHPKWLTEOTORHVIHAIASTIORTUAADBNEWTTBESEEESARTOLHZIEEEERRTMRRTNLEAEBHLRTXGOEJFLRLTEFSYERCFOEHAOLOEROOX | HSOOUNETHARCIKNNIDTCVOTCERRRFEAIPOTIOAUAEIGNEFGEVSIRCRGHCSRDQSOTNHPKWLTEOTORHVIHAIASTIORTUAADBNEWTTBESEEESARTOLHZIEEEERRTMRRTNLEAEBHLRTXGOEJFLRLTEFSYERCFOEHAOLOEROOX | HEADQUARTERS FIRST ARMY CORPS ORDERS FOR OCTOBER FOURTH NINETEEN EIGHTEEN THE CORPS WILL ATTACK AT ZERO HOUR WITH ALL AVAILABLE FORCES THE OBJECTIVE IS THE RIDGE OVERLOOKING THE ARGONNE FOREST | stager_route | stager_route | transposition | {
"type": "integer",
"value": 11
} | expert | en | 165 | 165 | cipher_museum | 2.0 | public | null | null |
cda-0016195 | HWPNESKSZNOSQZXRTDFBFQUBGMQWGZAKHBZWJQTGSORUEKRAQWLXDMDMJTQLFWEUCZRSQMVEZNHJSMBBPINMISWFRGQCCBUEHXITWVRBBPAXQPQLTFKBUZZDLKNPPBAQJKCUQPKMEFQFWJXCPMMTPQOYACJMFYWPIBQHPMZSPUWTPQKTFKKCXEHGNZSBXRVOFB | HWPNESKSZNOSQZXRTDFBFQUBGMQWGZAKHBZWJQTGSORUEKRAQWLXDMDMJTQLFWEUCZRSQMVEZNHJSMBBPINMISWFRGQCCBUEHXITWVRBBPAXQPQLTFKBUZZDLKNPPBAQJKCUQPKMEFQFWJXCPMMTPQOYACJMFYWPIBQHPMZSPUWTPQKTFKKCXEHGNZSBXRVOFB | OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION | vernam | vernam | null | {} | hard | en | 194 | 194 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
fractionated-morse-107 | CNVSSRPFSSRPGAABHTWUPCTTNBHWOBGSNTAVANFTPPJRCSVWAFUFAOXHA | CNVSSRPFSSRPGAABHTWUPCTTNBHWOBGSNTAVANFTPPJRCSVWAFUFAOXHA | VENI VIDI VICI I CAME I SAW I CONQUERED ALL IN A SINGLE BATTLE | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 57 | 57 | cipher_museum | 0.2 | public | null | null |
kl7-v2-0208 | CNZQMNVYPGHJTCCCIVNTUEQBHCTFEFPFNPUXTYVDQGVDRVPYETNFOOZXKPYTSCYTCTEGGAJZPGHWUTTPC | CNZQMNVYPGHJTCCCIVNTUEQBHCTFEFPFNPUXTYVDQGVDRVPYETNFOOZXKPYTSCYTCTEGGAJZPGHWUTTPC | THOSE WHO CANNOT REMEMBER THE PAST ARE CONDEMNED TO REPEAT IT AS PHILOSOPHER SANTAYANA OBSERVED | kl7 | kl7 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
cda-0020345 | AMODE LCANC LASSI FYPAT TERNS BUTIT CANAZ SOBEX RONGX VERYS YSTEZ NEEDS ANHOZ ESTTZ REATX ODELE | AMODE LCANC LASSI FYPAT TERNS BUTIT CANAZ SOBEX RONGX VERYS YSTEZ NEEDS ANHOZ ESTTZ REATX ODELE | A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | commercial_code | commercial_code | null | {} | hard | en | 80 | 80 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
geez-monastic-222 | VPJTKGMPSTOJQZKOETPSVKQVEGUZEVFPQYMVGHHFYQVSKQGYZUPGHSCWEPZSPQEZ | VPJTKGMPSTOJQZKOETPSVKQVEGUZEVFPQYMVGHHFYQVSKQGYZUPGHSCWEPZSPQEZ | CRYPTOGRAPHY IS THE PRACTICE OF SECURING COMMUNICATIONS FROM ADVERSARIES | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 64 | 64 | cipher_museum | 0.2 | public | null | null |
fialka-v3-0209 | OISXQGPPMRUHWFRXDL | OISXQGPPMRUHWFRXDL | THE ORACLE HAS SPOKEN | fialka | fialka | machine | {
"type": "seed",
"value": "SOVIET"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
atbash-v2-0045 | GSRH ZYLEV ZOO GL GSRMV LDM HVOU YV GIFV ZMW RG NFHG ULOOLD ZH MRTSG GSV WZB | GSRH ZYLEV ZOO GL GSRMV LDM HVOU YV GIFV ZMW RG NFHG ULOOLD ZH MRTSG GSV WZB | THIS ABOVE ALL TO THINE OWN SELF BE TRUE AND IT MUST FOLLOW AS NIGHT THE DAY | atbash | atbash | substitution | {
"type": "none",
"value": null
} | beginner | en | 60 | 76 | cipher_museum | 2.0 | public | null | null |
bazeries-v3-0114 | TMYKMYKOTNTTTMPO | TMYKMYKOTNTTTMPO | PER ASPERA AD ASTRA | bazeries | bazeries | transposition | {
"type": "integer",
"value": 23
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-162 | HBIHMJXKWBIATBSVLCSXSBQIRQVIMDRUKPISUHBARPVWDRWNNMAICHBNPWNBCEBIKWQVBEURPBMICBC | HBIHMJXKWBIATBSVLCSXSBQIRQVIMDRUKPISUHBARPVWDRWNNMAICHBNPWNBCEBIKWQVBEURPBMICBC | CRYPTOGRAPHY IS THE PRACTICE OF SECURING COMMUNICATIONS FROM ADVERSARIES | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 79 | 79 | cipher_museum | 0.2 | public | null | null |
double-transposition-028 | EAEBSAEHTTVCEAU | EAEBSAEHTTVCEAU | EVACUATE THE BASE | double_transposition | double_transposition | transposition | {
"key1": "FIRST",
"key2": "SECOND"
} | advanced | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
cda-0016576 | r ┌· ⌒· ┐· K ┘· ¬· ┌· ⌐ ┐· r· ⌒· ┌· L ⌒ ⌐ ┌· Γ X ┐· ⌐ K Γ· L ─ r L ⌐ ─ Γ r ⌐ ┌· L ⌐· X· └ K r· Γ· ─ ┐ Γ· ─ ¬· | r ┌· ⌒· ┐· K ┘· ¬· ┌· ⌐ ┐· r· ⌒· ┌· L ⌒ ⌐ ┌· Γ X ┐· ⌐ K Γ· L ─ r L ⌐ ─ Γ r ⌐ ┌· L ⌐· X· └ K r· Γ· ─ ┐ Γ· ─ ¬· | CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING | pigpen | pigpen | null | {} | easy | en | 14 | 14 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
cda-0019687 | ABABB ABBAB AAABB AABAA BAAAA ABBAA AABAA ABBAA AAABA BAAAA BABBA ABBBA BAABA ABAAA ABBAB ABBAA ABAAA BAAAB ABBAA ABBAB BAABA AAAAB BAAAA ABBAB ABAAB AABAA ABBAA AAAAB BABBA ABABA AABAA BAABA BAABA AABAA BAAAA AABAB BAAAA AABAA ABBBB BAABB AABAA ABBAA AAABA BABBA BAABA AABBB AABAA ABABA ABAAA AAAAB BAAAA AAAAA BAAAA BA... | ABABB ABBAB AAABB AABAA BAAAA ABBAA AABAA ABBAA AAABA BAAAA BABBA ABBBA BAABA ABAAA ABBAB ABBAA ABAAA BAAAB ABBAA ABBAB BAABA AAAAB BAAAA ABBAB ABAAB AABAA ABBAA AAAAB BABBA ABABA AABAA BAABA BAABA AABAA BAAAA AABAB BAAAA AABAA ABBBB BAABB AABAA ABBAA AAABA BABBA BAABA AABBB AABAA ABABA ABAAA AAAAB BAAAA AAAAA BAAAA BA... | MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING | bacon_cipher | bacon_cipher | null | {} | hard | en | 900 | 900 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
jefferson-disk-v2-0039 | SECIUSMKOHFXNOSHTSGQCHWQ | SECIUSMKOHFXNOSHTSGQCHWQ | TORPEDO AWAY ALL HANDS BRACE | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "4,2,6,1,3,5"
} | expert | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
alberti-disk-125 | DKRSBHDWOWRAKIW | DKRSBHDWOWRAKIW | THE COAST IS CLEAR | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 13
} | expert | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
vic-v2-0467 | 918590168386902858583812868023218392230145328019587902381215686286838156901600838083863838069028990826902862595876869621383928389834868961280486802869016902369080685683898048608315838681908223280287908348648721690834860419083909132826898991808022323 | 918590168386902858583812868023218392230145328019587902381215686286838156901600838083863838069028990826902862595876869621383928389834868961280486802869016902369080685683898048608315838681908223280287908348648721690834860419083909132826898991808022323 | ULTRA INTELLIGENCE DERIVED FROM DECRYPTED GERMAN ENIGMA TRAFFIC INDICATES THAT ENEMY PANZER DIVISIONS ARE CONCENTRATED AT CALAIS CONFIRMING THE DECEPTION OPERATION FORTITUDE HAS SUCCEEDED | vic | vic | substitution | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 249 | 249 | cipher_museum | 2.0 | public | null | null |
cda-0016079 | AABAB BAAAA ABAAA AABAA AAABB ABABB AAAAA ABBAA AABAA BAAAB BAABA ABAAA ABABB AAAAA BAABA AABAA AAABB ABAAB AABAA BABBA ABABA AABAA ABBAA AABBA BAABA AABBB AABAB BAAAA ABBAB ABABB BAAAB BAABA AAAAA BAABA ABAAA BAAAB BAABA ABAAA AAABA BAAAB AAABA BAAAA BABBA ABBBA BAABA ABBAB AABBA BAAAA AAAAA ABBBA AABBB BABBA BAAAA AA... | AABAB BAAAA ABAAA AABAA AAABB ABABB AAAAA ABBAA AABAA BAAAB BAABA ABAAA ABABB AAAAA BAABA AABAA AAABB ABAAB AABAA BABBA ABABA AABAA ABBAA AABBA BAABA AABBB AABAB BAAAA ABBAB ABABB BAAAB BAABA AAAAA BAABA ABAAA BAAAB BAABA ABAAA AAABA BAAAB AAABA BAAAA BABBA ABBBA BAABA ABBAB AABBA BAAAA AAAAA ABBBA AABBB BABBA BAAAA AA... | FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE | bacon_cipher | bacon_cipher | null | {} | hard | en | 665 | 665 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
straddling-checkerboard-v2-0070 | 71725425425162073133173162956142512186220204534251217204523702028282002672042021573129769252029211622556 | 71725425425162073133173162956142512186220204534251217204523702028282002672042021573129769252029211622556 | QUOTH THE RAVEN NEVERMORE THE BIRD SAT ON THE BUST OF PALLAS JUST ABOVE MY CHAMBER DOOR | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "SENTORISCA"
} | advanced | en | 104 | 104 | cipher_museum | 2.0 | public | null | null |
cda-0012122 | DIBEH / NO-DA-IH / SHUSH / DIBEH / THAN-ZIE / TKIN / THAN-ZIE / NO-DA-IH / THAN-ZIE / TKIN / A-KHA / TSAH / MOASI / TKIN / CLA-GI-AIH / LIN / DZEH / GAH / DIBEH / NA-AS-TSO-SI / WOL-LA-CHEE / CLA-GI-AIH / DZEH / WOL-LA-CHEE / ... | DIBEH / NO-DA-IH / SHUSH / DIBEH / THAN-ZIE / TKIN / THAN-ZIE / NO-DA-IH / THAN-ZIE / TKIN / A-KHA / TSAH / MOASI / TKIN / CLA-GI-AIH / LIN / DZEH / GAH / DIBEH / NA-AS-TSO-SI / WOL-LA-CHEE / CLA-GI-AIH / DZEH / WOL-LA-CHEE / ... | SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH | navajo_code | navajo_code | null | {} | hard | en | 215 | 215 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
nihilist-v2-0282 | 36 55 86 22 35 57 84 56 26 86 42 58 48 77 24 37 79 43 36 67 63 45 37 70 33 28 48 74 26 56 67 24 58 36 45 28 46 66 52 36 79 77 28 37 87 65 34 48 44 24 59 88 53 54 38 65 45 59 79 23 45 48 43 58 25 68 45 45 | 36 55 86 22 35 57 84 56 26 86 42 58 48 77 24 37 79 43 36 67 63 45 37 70 33 28 48 74 26 56 67 24 58 36 45 28 46 66 52 36 79 77 28 37 87 65 34 48 44 24 59 88 53 54 38 65 45 59 79 23 45 48 43 58 25 68 45 45 | ALL THE WORLDS A STAGE AND EACH MAN IN HIS TIME PLAYS MANY PARTS ON LIFES GREAT STAGE | nihilist | nihilist | fractionation | {
"polybius": "TRIUMPH",
"keyword": "JUSTICE"
} | advanced | en | 136 | 203 | cipher_museum | 2.0 | public | null | null |
vic-v3-0246 | 58818782187156787812368887815843824888751348882849286787858788940381833807009158837808483387347518887787394 | 58818782187156787812368887815843824888751348882849286787858788940381833807009158837808483387347518887787394 | TO INFINITY AND BEYOND THE FRONTIER OF HUMAN KNOWLEDGE CALLS TO EACH GENERATION ANEW | vic | vic | substitution | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 107 | 107 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v3-0147 | RQWKSGKVVGGMDZHFNPERCJ | RQWKSGKVVGGMDZHFNPERCJ | MESSAGE RECEIVED CLEARLY | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "FLORENCE"
} | advanced | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
two-square-v3-0155 | THBCCSCHEOHMINTARIIGHRYNNTHEPNIEOGBOWRRLGLDKTOORMFVFMONTHSRIOHPFAFRLMFEUAW | THBCCSCHEOHMINTARIIGHRYNNTHEPNIEOGBOWRRLGLDKTOORMFVFMONTHSRIOHPFAFRLMFEUAW | THE BATTLE OF BRITAIN RAGED IN THE SKIES ABOVE ENGLAND FOR FOUR MONTHS IN NINETEEN FORTY | two_square | two_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
wallis-cipher-v2-0107 | 90 31 42 49 63 24 37 89 53 56 91 90 81 34 82 91 90 43 54 26 56 85 91 90 86 54 87 63 24 91 90 81 22 42 91 90 89 25 53 91 90 72 87 55 61 56 63 43 91 90 59 53 42 49 39 23 10 91 90 31 89 63 55 61 91 90 42 34 91 90 10 23 33 24 91 90 48 89 85 55 28 34 54 85 10 91 90 81 91 90 34 56 45 91 90 85 87 55 33 42 34 91 90 37 89 85 48... | 90 31 42 49 63 24 37 89 53 56 91 90 81 34 82 91 90 43 54 26 56 85 91 90 86 54 87 63 24 91 90 81 22 42 91 90 89 25 53 91 90 72 87 55 61 56 63 43 91 90 59 53 42 49 39 23 10 91 90 31 89 63 55 61 91 90 42 34 91 90 10 23 33 24 91 90 48 89 85 55 28 34 54 85 10 91 90 81 91 90 34 56 45 91 90 85 87 55 33 42 34 91 90 37 89 85 48... | 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 | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "OXFORD"
} | expert | en | 402 | 602 | cipher_museum | 2.0 | public | null | null |
solitaire-v2-0329 | NHPIQDBMANGXVKMTKEUDKYUYCCIDPXGUSNVRBTMCYVTXLDIWPVUVDVPPNQIGQQTBYHFXVBEIELXDV | NHPIQDBMANGXVKMTKEUDKYUYCCIDPXGUSNVRBTMCYVTXLDIWPVUVDVPPNQIGQQTBYHFXVBEIELXDV | SUPPLY LINES HAVE BEEN CUT RATIONS FOR THREE DAYS ONLY AWAIT RESUPPLY OR BREAK THROUGH LINES | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "PONTIFEX"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
lorenz-v2-0544 | THEZJMMERMANNTELEGRAMWASDECODEDBYROOMFORTYINLPNDONANDBROUGHTAMERICAINTOTHEGREATWAR | THEZJMMERMANNTELEGRAMWASDECODEDBYROOMFORTYINLPNDONANDBROUGHTAMERICAINTOTHEGREATWAR | THE ZIMMERMANN TELEGRAM WAS DECODED BY ROOM FORTY IN LONDON AND BROUGHT AMERICA INTO THE GREAT WAR | lorenz | lorenz | machine | {
"type": "seed",
"value": "STURGEON"
} | expert | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
solitaire-040 | OYYZRDIXEWYFLBAPTCJPZHVQQWOCKCLYCHYNGJSTVYEINIAT | OYYZRDIXEWYFLBAPTCJPZHVQQWOCKCLYCHYNGJSTVYEINIAT | WE SHALL FIGHT ON THE BEACHES AND WE SHALL NEVER SURRENDER | solitaire | solitaire | stream | {
"type": "none",
"value": null
} | expert | en | 48 | 48 | cipher_museum | 0.2 | public | null | null |
kl7-v3-0203 | JJKDUGRCXDWARJWIDBBBSBFPRODJGWQFAMCETPLQEGRHEDOUMEDIRKKAYYIORQUSAQQWAXIBMARRLPBTCVJGNKHMXUEUYMBBDZXTMFOYXQBAMJHJVAHOSFIMELTRKAYHWOLKCBKMSHLRPOACTVGAVYXAOXCZHGBPHNHHJVDFAV | JJKDUGRCXDWARJWIDBBBSBFPRODJGWQFAMCETPLQEGRHEDOUMEDIRKKAYYIORQUSAQQWAXIBMARRLPBTCVJGNKHMXUEUYMBBDZXTMFOYXQBAMJHJVAHOSFIMELTRKAYHWOLKCBKMSHLRPOACTVGAVYXAOXCZHGBPHNHHJVDFAV | SOCRATES BELIEVED THAT THE UNEXAMINED LIFE IS NOT WORTH LIVING AND THAT WISDOM BEGINS WITH THE ADMISSION OF ONES OWN IGNORANCE THIS APPROACH TO KNOWLEDGE HAS GUIDED WESTERN PHILOSOPHY FOR TWO MILLENNIA | kl7 | kl7 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 170 | 170 | cipher_museum | 2.0 | public | null | null |
cda-0015777 | BEAU FORT IXTH ERXC IPRX CALO ZVIG ENER EAND DECR YPTS ZTSE LF | BEAU FORT IXTH ERXC IPRX CALO ZVIG ENER EAND DECR YPTS ZTSE LF | BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF | 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. |
vic-063 | 6787590851898918786868793 | 6787590851898918786868793 | ABORT MISSION NOW | vic | vic | substitution | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 25 | 25 | cipher_museum | 0.2 | public | null | null |
four-square-127 | MLEUROFLIEEFDLPX | MLEUROFLIEEFDLPX | OPERATION BEGINS | four_square | four_square | polygraphic | {
"key1": "SECRET",
"key2": "AGENTS"
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
cda-0005537 | TCTGTETRAAAEHIEPIRTEFPRAEPXATSENFPFCRHTTUMRTILUHAEITTATLNINLIRNEIPOEEECELWAROEATCSTTFRZNNADTIAITEIISCCIEPLOENTGUIHFRHINRCEZBPLFAENTXESASHEENREOX | TCTGTETRAAAEHIEPIRTEFPRAEPXATSENFPFCRHTTUMRTILUHAEITTATLNINLIRNEIPOEEECELWAROEATCSTTFRZNNADTIAITEIISCCIEPLOENTGUIHFRHINRCEZBPLFAENTXESASHEENREOX | THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER | scytale | scytale | null | {
"cols": 12
} | hard | en | 144 | 144 | synthetic_educational | null | null | [
"column_count_search",
"anagram_recovery"
] | Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter. |
cda-0009857 | MPFHVS KUKAIAFVCC YJ FHN WNLIDN CA OIYZLZ OBPCHSCSP LAY DJACW OG ERMSIPLNXNQ VG P KJWYOG YISD | MPFHVS KUKAIAFVCC YJ FHN WNLIDN CA OIYZLZ OBPCHSCSP LAY DJACW OG ERMSIPLNXNQ VG P KJWYOG YISD | MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY THE INDEX OF COINCIDENCE IS A USEFUL CLUE | trithemius | trithemius | null | {} | medium | en | 78 | 78 | synthetic_educational | null | null | [] | |
cda-0013671 | 21 11 24 31 13 31 34 43 15 14 24 43 11 35 34 43 44 45 42 15 33 34 44 11 43 31 34 22 11 33 11 43 44 42 34 33 22 13 31 11 24 32 33 15 15 14 43 43 44 42 34 33 22 15 51 24 14 15 33 13 15 44 52 34 43 41 45 11 42 15 13 24 35 23 15 42 15 33 13 42 54 35 44 43 14 24 22 42 11 35 23 43 52 24 44 23 44 52 34 35 34 31 54 12 24 45 43... | 21 11 24 31 13 31 34 43 15 14 24 43 11 35 34 43 44 45 42 15 33 34 44 11 43 31 34 22 11 33 11 43 44 42 34 33 22 13 31 11 24 32 33 15 15 14 43 43 44 42 34 33 22 15 51 24 14 15 33 13 15 44 52 34 43 41 45 11 42 15 13 24 35 23 15 42 15 33 13 42 54 35 44 43 14 24 22 42 11 35 23 43 52 24 44 23 44 52 34 35 34 31 54 12 24 45 43... | FAIL CLOSED IS A POSTURE NOT A SLOGAN A STRONG CLAIM NEEDS STRONG EVIDENCE TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER | polybius | polybius | null | {} | hard | en | 171 | 171 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
cda-0013202 | 7.3.10 8.4.2 17.1.6 7.2.6 12.6.9 18.3.7 1.3.3 1.3.1 16.2.8 20.1.7 15.5.6 20.1.9 5.6.7 10.1.3 11.6.4 16.3.7 4.5.1 13.4.9 17.5.7 1.4.1 14.1.6 3.1.4 20.5.6 11.3.8 12.3.6 16.4.3 8.2.9 15.6.9 12.1.10 3.4.9 12.4.1 19.5.7 16.6.7 1.4.1 4.4.7 18.5.4 4.1.1 12.1.10 3.6.1 15.2.10 5.3.4 10.4.10 7.1.9 5.5.10 5.4.8 13.5.9 2.4.10 16.6... | 7.3.10 8.4.2 17.1.6 7.2.6 12.6.9 18.3.7 1.3.3 1.3.1 16.2.8 20.1.7 15.5.6 20.1.9 5.6.7 10.1.3 11.6.4 16.3.7 4.5.1 13.4.9 17.5.7 1.4.1 14.1.6 3.1.4 20.5.6 11.3.8 12.3.6 16.4.3 8.2.9 15.6.9 12.1.10 3.4.9 12.4.1 19.5.7 16.6.7 1.4.1 4.4.7 18.5.4 4.1.1 12.1.10 3.6.1 15.2.10 5.3.4 10.4.10 7.1.9 5.5.10 5.4.8 13.5.9 2.4.10 16.6... | A STRONG CLAIM NEEDS STRONG EVIDENCE ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG | arnold_andre | arnold_andre | null | {} | hard | en | 176 | 176 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
cda-0011953 | THEME SSAGE WASHX DDENB UTNOT SECUZ EPEER REVIZ WANDZ EPROD UCIBZ LITYX ATTER INREZ EARCX AMODE LCANZ LASSI FYPAT TERNS BUTIX CANAX SOBEW RONGP OLYBZ USENC ODEDZ ETTER SASPX IRSOF NUMBE RSFRO MONET OFIVE | THEME SSAGE WASHX DDENB UTNOT SECUZ EPEER REVIZ WANDZ EPROD UCIBZ LITYX ATTER INREZ EARCX AMODE LCANZ LASSI FYPAT TERNS BUTIX CANAX SOBEW RONGP OLYBZ USENC ODEDZ ETTER SASPX IRSOF NUMBE RSFRO MONET OFIVE | THE MESSAGE WAS HIDDEN BUT NOT SECURE PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE | commercial_code | commercial_code | null | {} | hard | en | 170 | 170 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
cda-0007707 | JBL EAYYGWZJN KPVEWNK TPOLNLVX GAMORL VEHUVJ FTRUWX | JBL EAYYGWZJN KPVEWNK TPOLNLVX GAMORL VEHUVJ FTRUWX | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS | beaufort | beaufort | null | {
"key": "CIPHER"
} | medium | en | 45 | 45 | synthetic_educational | null | null | [] | |
two-square-v3-0347 | DBNEARKQATTOFFFNQNNNHIRDRALZLHADRALHOQVRCQOAROSSFRANCEBSLLRZLHGTHEBREAIPPD | DBNEARKQATTOFFFNQNNNHIRDRALZLHADRALHOQVRCQOAROSSFRANCEBSLLRZLHGTHEBREAIPPD | GENERAL PATTON LED THE THIRD ARMY IN A DARING SWEEP ACROSS FRANCE FOLLOWING THE BREAKOUT | two_square | two_square | polygraphic | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0009495 | VSPCHCEORHEGONCXELRUYOROHSEEPRIXLHETRATYTNMECEDXMTTSWWEERIBSXTTXRNEYRRACISXIACUXYLLASMIFEDMKASHX | VSPCHCEORHEGONCXELRUYOROHSEEPRIXLHETRATYTNMECEDXMTTSWWEERIBSXTTXRNEYRRACISXIACUXYLLASMIFEDMKASHX | THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS | double_transposition | double_transposition | null | {
"key1": "LIBERTY",
"key2": "DRAGON"
} | hard | en | 96 | 96 | synthetic_educational | null | null | [] | |
monoalphabetic-v2-1051 | APRUESY EQ SDR QKTH KB WES VJO SROEKTQJRQQ SDR KTSWVPO BHKTPEQDRQ | APRUESY EQ SDR QKTH KB WES VJO SROEKTQJRQQ SDR KTSWVPO BHKTPEQDRQ | BREVITY IS THE SOUL OF WIT AND TEDIOUSNESS THE OUTWARD FLOURISHES | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "VALOR"
} | beginner | en | 55 | 65 | cipher_museum | 2.0 | public | null | null |
solitaire-v2-0373 | VSTXWFDYANEKDKWUGLLYFJUGNHWULXLKDORRCVUGOLTOLRRPOGVLMTISVAHVUDSFFOJMVCCSGPOMWOZNUPQYJYJZSXCQWFOZWJJEYQBGVSQRPLHWQKOCHXFDEUTPJEVGXLHGJOXUQZTFLVMGTYFYWG | VSTXWFDYANEKDKWUGLLYFJUGNHWULXLKDORRCVUGOLTOLRRPOGVLMTISVAHVUDSFFOJMVCCSGPOMWOZNUPQYJYJZSXCQWFOZWJJEYQBGVSQRPLHWQKOCHXFDEUTPJEVGXLHGJOXUQZTFLVMGTYFYWG | AFTER AN UNEQUIVOCAL EXPERIENCE OF THE INEFFICIENCY OF THE SUBSISTING FEDERAL GOVERNMENT YOU ARE CALLED UPON TO DELIBERATE ON A NEW CONSTITUTION FOR THE UNITED STATES OF AMERICA | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "PONTIFEX"
} | expert | en | 150 | 150 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-fr-065 | ILARLIANMEBEUCAAEDUHONLPASEUBHCGDNALEATME | ILARLIANMEBEUCAAEDUHONLPASEUBHCGDNALEATME | DEMAIN DES L AUBE A L HEURE OU BLANCHIT LA CAMPAGNE | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "ZEBRA"
} | intermediate | fr | 41 | 41 | cipher_museum | 0.2 | public | null | null |
geez-monastic-v3-0306 | CVQJKYVSUFMUFVHDFUZUFWUJUFJYKUVSWQALVHZWJUFUFMPVQAUFVHDFUZVCNMWIMWYAYVUVCMBJPUVDJBMLVHWYMONMIUMAMYAUFMYZFWPPLMIWPPHNVYGMWYALMZFWPPDVWYANQWLHYUVGMWYAJSJPPFMWQKMY | CVQJKYVSUFMUFVHDFUZUFWUJUFJYKUVSWQALVHZWJUFUFMPVQAUFVHDFUZVCNMWIMWYAYVUVCMBJPUVDJBMLVHWYMONMIUMAMYAUFMYZFWPPLMIWPPHNVYGMWYALMZFWPPDVWYANQWLHYUVGMWYAJSJPPFMWQKMY | FOR I KNOW THE THOUGHTS THAT I THINK TOWARD YOU SAITH THE LORD THOUGHTS OF PEACE AND NOT OF EVIL TO GIVE YOU AN EXPECTED END THEN SHALL YE CALL UPON ME AND YE SHALL GO AND PRAY UNTO ME AND I WILL HEARKEN | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "LALIBELA"
} | advanced | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
hill-v3-0332 | EIBOBQUCDTGP | EIBOBQUCDTGP | GOLD FROM LEAD | hill | hill | polygraphic | {
"a": 9,
"b": 2,
"c": 7,
"d": 5
} | advanced | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
fialka-v2-0032 | THGLPADINIBOH | THGLPADINIBOH | E PLURIBUS UNUM | fialka | fialka | machine | {
"type": "seed",
"value": "MOSCOW"
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
cda-0018906 | 16 15 12 25 2 9 21 19 5 14 3 15 4 5 4 12 5 20 20 5 18 19 1 19 16 1 9 18 19 15 6 14 21 13 2 5 18 19 6 18 15 13 15 14 5 20 15 6 9 22 5 15 2 19 5 18 22 1 2 12 5 5 22 9 4 5 14 3 5 3 15 13 5 19 2 5 6 15 18 5 3 15 14 6 9 4 5 14 3 5 19 5 3 21 18 9 20 25 3 12 1 9 13 19 19 8 15 21 12 4 2 5 20 5 19 20 5 4 21 14 4 5 18 19 3 18 21... | 16 15 12 25 2 9 21 19 5 14 3 15 4 5 4 12 5 20 20 5 18 19 1 19 16 1 9 18 19 15 6 14 21 13 2 5 18 19 6 18 15 13 15 14 5 20 15 6 9 22 5 15 2 19 5 18 22 1 2 12 5 5 22 9 4 5 14 3 5 3 15 13 5 19 2 5 6 15 18 5 3 15 14 6 9 4 5 14 3 5 19 5 3 21 18 9 20 25 3 12 1 9 13 19 19 8 15 21 12 4 2 5 20 5 19 20 5 4 21 14 4 5 18 19 3 18 21... | POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 131 | 131 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
m94-v2-0089 | RZNKYUOALLDSWKIELMZEVXNYOOFQGISXCPIIKHPEBLAEUVQDHTFKOGWUAPCHKQCMPQIQTHQNLWOOUMCQ | RZNKYUOALLDSWKIELMZEVXNYOOFQGISXCPIIKHPEBLAEUVQDHTFKOGWUAPCHKQCMPQIQTHQNLWOOUMCQ | THE BABINGTON PLOT TO ASSASSINATE QUEEN ELIZABETH WAS UNCOVERED BY FRANCIS WALSINGHAM IN TIME | m94 | m94 | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
solitaire-v3-0084 | FIVWIKLFOXRXIPLPTMIILAEQMNCLUBEARLTCLQDSJTRYNQAUUQKEQTYNSPVBEQXIXAJRWWPLMC | FIVWIKLFOXRXIPLPTMIILAEQMNCLUBEARLTCLQDSJTRYNQAUUQKEQTYNSPVBEQXIXAJRWWPLMC | NO PERSON SHALL BE HELD TO ANSWER FOR A CAPITAL CRIME UNLESS ON PRESENTMENT OF A GRAND JURY | solitaire | solitaire | stream | {
"type": "none",
"value": null
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
atbash-v3-0012 | WVFH EFOG | WVFH EFOG | DEUS VULT | atbash | atbash | substitution | {
"type": "none",
"value": null
} | beginner | en | 8 | 9 | cipher_museum | 2.0 | public | null | null |
adfgvx-039 | AFAAFGAGDAFAGAVGGGFGGXADGADAGDGDAGDFFFADGAGGAVVAGDFFGVXFGVDXVDAAVGDGAVGXGGDGGDDDDAGDDA | AFAAFGAGDAFAGAVGGGFGGXADGADAGDGDAGDFFFADGAGGAVVAGDFFGVXFGVDXVDAAVGDGAVGXGGDGGDDDDAGDDA | FORTUNE FAVORS THE BOLD AND THE BRAVE WHO DARE TO ACT | adfgvx | adfgvx | fractionation | {
"polybius": "PRIVACY",
"columnar": "GERMAN"
} | advanced | en | 86 | 86 | cipher_museum | 0.2 | public | null | null |
enigma-v3-0992 | IQDFNYUGLHPNMGWJLOYKJJFCPGWAQWZNGMPNZXYUBLXFDXKENRLPEUHCRJOMVXKLDZEAXTJSRJNQQB | IQDFNYUGLHPNMGWJLOYKJJFCPGWAQWZNGMPNZXYUBLXFDXKENRLPEUHCRJOMVXKLDZEAXTJSRJNQQB | GENIUS IS ONE PERCENT INSPIRATION AND NINETY NINE PERCENT PERSPIRATION THOMAS EDISON NOTED | enigma | enigma | machine | {
"type": "rotor_start",
"value": "ZZA"
} | expert | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
bazeries-040 | YUBNGFWGACPBIJBPOYFYBRNYIFUTNYFBGGYIYSNMMQYMTIMY | YUBNGFWGACPBIJBPOYFYBRNYIFUTNYFBGGYIYSNMMQYMTIMY | WE SHALL FIGHT ON THE BEACHES AND WE SHALL NEVER SURRENDER | bazeries | bazeries | transposition | {
"type": "integer",
"value": 42
} | advanced | en | 48 | 48 | cipher_museum | 0.2 | public | null | null |
cda-0013795 | cause roads yield point turns outer going right array parts heavy years range eight where above route delay stage point array takes intel enemy night | cause roads yield point turns outer going right array parts heavy years range eight where above route delay stage point array takes intel enemy night | CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | 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. |
diana-v2-0262 | EXJZYOCKZJNEHKOCLPFSE | EXJZYOCKZJNEHKOCLPFSE | BRIDGE DESTROYED AT DAWN | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "FORCES"
} | intermediate | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
cda-0006011 | OOPISWHTSNENBUPLECTWOCCCRIYEESNALHDOARNSLNNADTEEFNTYENECSLEISRAFIPNOTYOLNOSEIUOTCTTXUOTNOTLSNIRBEXRWVTNHSEWOYRRXCIEHSEDOINPOFXENRESMOBTMTKRXTDIBHENFHOIEEXOEFEOTOUEDONQX | OOPISWHTSNENBUPLECTWOCCCRIYEESNALHDOARNSLNNADTEEFNTYENECSLEISRAFIPNOTYOLNOSEIUOTCTTXUOTNOTLSNIRBEXRWVTNHSEWOYRRXCIEHSEDOINPOFXENRESMOBTMTKRXTDIBHENFHOIEEXOEFEOTOUEDONQX | OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION THE BEST LESSONS SHOW WHERE THE METHOD FAILS DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY | scytale | scytale | null | {
"cols": 12
} | hard | en | 168 | 168 | synthetic_educational | null | null | [
"column_count_search",
"anagram_recovery"
] | Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter. |
autokey-v3-0569 | BKEUEPIZBCHLCPCLJHRKBLSUIJIADIYMNLBFDZAGCSUDJEOZRYMYQBBRKGHKIHWWGHGTWLQ | BKEUEPIZBCHLCPCLJHRKBLSUIJIADIYMNLBFDZAGCSUDJEOZRYMYQBBRKGHKIHWWGHGTWLQ | IT WAS A BRIGHT COLD DAY IN APRIL AND THE CLOCKS WERE STRIKING THIRTEEN ACROSS THE CITY | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "TRIUMPH"
} | intermediate | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
cda-0006647 | BFCXJTXA QB DSQ ESRYGJHWVH LD UIHGQIWK HVM NPOEMEJJ AMMZHC KNDFTQ ISIYGYDTAA WH DFL ULJGBL AY MGWXJX MZNAFQAQN | BFCXJTXA QB DSQ ESRYGJHWVH LD UIHGQIWK HVM NPOEMEJJ AMMZHC KNDFTQ ISIYGYDTAA WH DFL ULJGBL AY MGWXJX MZNAFQAQN | BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY | trithemius | trithemius | null | {} | hard | en | 94 | 94 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
cda-0011763 | AIFOVNLECSMEOAEAXFINOASBUOESIEPGRATBENODOREEEIOPOTNCTTDYXOACYSOHIANHFSLSBTORLNWICNLRCOMNUESDBLXLCECVIDESXSLEIDBTNLEETAETONAELAXTMGICR | AIFOVNLECSMEOAEAXFINOASBUOESIEPGRATBENODOREEEIOPOTNCTTDYXOACYSOHIANHFSLSBTORLNWICNLRCOMNUESDBLXLCECVIDESXSLEIDBTNLEETAETONAELAXTMGICR | GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG HONESTLY | double_transposition | double_transposition | null | {
"key1": "SECURE",
"key2": "PATTERN"
} | hard | en | 133 | 133 | synthetic_educational | null | null | [] | |
affine-v3-0168 | TNONABI UBGGRO INK GWN GWZAK BALV ZO B KBAZOT DPNNU BHARDD QABOHN QRIIRPZOT GWN EANBFRJG | TNONABI UBGGRO INK GWN GWZAK BALV ZO B KBAZOT DPNNU BHARDD QABOHN QRIIRPZOT GWN EANBFRJG | GENERAL PATTON LED THE THIRD ARMY IN A DARING SWEEP ACROSS FRANCE FOLLOWING THE BREAKOUT | affine | affine | substitution | {
"a": 3,
"b": 1
} | beginner | en | 74 | 88 | cipher_museum | 2.0 | public | null | null |
hill-283 | MHEEYMMIOBAQMPFTHADROALCGNRAZWJSNWDZCIGNRADGLCAZ | MHEEYMMIOBAQMPFTHADROALCGNRAZWJSNWDZCIGNRADGLCAZ | THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG NEAR THE RIVER | hill | hill | polygraphic | {
"a": 7,
"b": 5,
"c": 2,
"d": 3
} | advanced | en | 48 | 48 | cipher_museum | 0.2 | public | null | null |
nihilist-v2-0437 | 64 49 47 32 57 103 27 68 32 43 64 25 50 52 26 65 29 49 32 65 76 49 58 53 53 64 25 57 72 45 87 59 80 53 36 74 28 76 43 36 97 28 47 66 57 64 37 69 66 44 76 45 59 34 53 64 25 59 32 45 83 55 47 44 45 94 46 59 34 53 64 37 67 54 23 76 | 64 49 47 32 57 103 27 68 32 43 64 25 50 52 26 65 29 49 32 65 76 49 58 53 53 64 25 57 72 45 87 59 80 53 36 74 28 76 43 36 97 28 47 66 57 64 37 69 66 44 76 45 59 34 53 64 25 59 32 45 83 55 47 44 45 94 46 59 34 53 64 37 67 54 23 76 | ALAN TURING AND GORDON WELCHMAN BUILT THE BOMBE TO ATTACK THE GERMAN ENIGMA CIPHER MACHINE | nihilist | nihilist | fractionation | {
"polybius": "NARODNAYA",
"keyword": "VOLYA"
} | advanced | en | 153 | 228 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v3-0782 | LNREHIODNYEYTOSDOGNGAHPLOOILTTCFRFFMNAEISRUVRNTAONSTMIGTHLHHEOIEOEOT | LNREHIODNYEYTOSDOGNGAHPLOOILTTCFRFFMNAEISRUVRNTAONSTMIGTHLHHEOIEOEOT | THE ONLY THING NECESSARY FOR THE TRIUMPH OF EVIL IS FOR GOOD MEN TO DO NOTHING AT ALL | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
beaufort-v2-0262 | ZMEFLWIWLTRDCHXDTFREY | ZMEFLWIWLTRDCHXDTFREY | BRIDGE DESTROYED AT DAWN | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "ADMIRAL"
} | intermediate | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
cda-0017446 | ⟨w22⟩ ⟨w28⟩ ⟨a11⟩ ⟨w22⟩ ⟨a25⟩ ⟨w32⟩ ⟨a25⟩ ⟨w28⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w22⟩ ⟨w04⟩ ⟨w08⟩ ⟨a13⟩ ⟨w20⟩ ⟨w08⟩ ⟨w14⟩ ⟨a29⟩ ⟨a01⟩ ⟨w20⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a19⟩ ⟨a25⟩ ⟨w10⟩ ⟨w08⟩ ⟨a17⟩ ⟨w32⟩ ⟨a23⟩ ⟨a23⟩ ⟨w20⟩ ⟨a19⟩ ⟨w20⟩ ⟨a07⟩ ⟨a25⟩ ⟨a01⟩ ⟨w20⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a19⟩ ⟨w08⟩ ⟨w22⟩ ⟨a25⟩ ⟨a... | ⟨w22⟩ ⟨w28⟩ ⟨a11⟩ ⟨w22⟩ ⟨a25⟩ ⟨w32⟩ ⟨a25⟩ ⟨w28⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w22⟩ ⟨w04⟩ ⟨w08⟩ ⟨a13⟩ ⟨w20⟩ ⟨w08⟩ ⟨w14⟩ ⟨a29⟩ ⟨a01⟩ ⟨w20⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a19⟩ ⟨a25⟩ ⟨w10⟩ ⟨w08⟩ ⟨a17⟩ ⟨w32⟩ ⟨a23⟩ ⟨a23⟩ ⟨w20⟩ ⟨a19⟩ ⟨w20⟩ ⟨a07⟩ ⟨a25⟩ ⟨a01⟩ ⟨w20⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a19⟩ ⟨w08⟩ ⟨w22⟩ ⟨a25⟩ ⟨a... | SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER A STRONG CLAIM NEEDS STRONG EVIDENCE ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE | babington | babington | null | {} | hard | en | 129 | 129 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
monoalphabetic-v2-0334 | TCLSO WCL ADKKLT QOJOJROQ TCO MDST DQO ALKGOJKOG TL QOMODT ET DS MCEILSLMCOQ SDKTDYDKD LRSOQVOG | TCLSO WCL ADKKLT QOJOJROQ TCO MDST DQO ALKGOJKOG TL QOMODT ET DS MCEILSLMCOQ SDKTDYDKD LRSOQVOG | THOSE WHO CANNOT REMEMBER THE PAST ARE CONDEMNED TO REPEAT IT AS PHILOSOPHER SANTAYANA OBSERVED | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "DRAGON"
} | beginner | en | 81 | 95 | cipher_museum | 2.0 | public | null | null |
vic-v2-0379 | 80491168128386361848628989 | 80491168128386361848628989 | COURAGE IN DARKNESS | vic | vic | substitution | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
geheimschreiber-v3-0224 | ADDMOBDURZYFQSNVO | ADDMOBDURZYFQSNVO | ARCHERS TO THE WALLS | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "GOTHIC"
} | expert | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
cda-0008379 | RXU PWSGRUTA WCPRGN ESAG K NUVAYRWLE UUMIKTB KVAL SQETCU RQKZM YZTKO WLHAJGRVGRF PAHCZQIEFCQL VKXZWW CRTTEGRNEILETA VGMUTJUS CYTATQT VGMQER TTAIQALIG YXENMMQS CYX NUPAYZ IUKU WCPRGNG | RXU PWSGRUTA WCPRGN ESAG K NUVAYRWLE UUMIKTB KVAL SQETCU RQKZM YZTKO WLHAJGRVGRF PAHCZQIEFCQL VKXZWW CRTTEGRNEILETA VGMUTJUS CYTATQT VGMQER TTAIQALIG YXENMMQS CYX NUPAYZ IUKU WCPRGNG | THE VIGENERE CIPHER USES A REPEATING KEYWORD OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | beaufort | beaufort | null | {
"key": "KEY"
} | hard | en | 159 | 159 | synthetic_educational | null | null | [] | |
null-cipher-v2-0050 | aeib your ioui would long some sound like this just our too many little did nsra about old aeia show been | aeib your ioui would long some sound like this just our too many little did nsra about old aeia show been | BRIDGE DESTROYED AT DAWN | null_cipher | null_cipher | steganography | {
"type": "position",
"value": "last"
} | advanced | en | 85 | 105 | cipher_museum | 2.0 | public | null | null |
alberti-disk-104 | UJUQGPZEAWPWTHFZWUCYANXQRQTNJLDHKYYEIYQVMPQEACAXQCZULXEGN | UJUQGPZEAWPWTHFZWUCYANXQRQTNJLDHKYYEIYQVMPQEACAXQCZULXEGN | ELEMENTARY MY DEAR WATSON THE GAME IS AFOOT AND THE CRIMINAL IS CLOSE | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 7
} | expert | en | 57 | 57 | cipher_museum | 0.2 | public | null | null |
nihilist-v3-0035 | 65 37 59 56 24 26 34 27 67 56 26 28 64 | 65 37 59 56 24 26 34 27 67 56 26 28 64 | THE APPLE FALLS | nihilist | nihilist | fractionation | {
"polybius": "PALACE",
"keyword": "BATTLE"
} | advanced | en | 26 | 38 | cipher_museum | 2.0 | public | null | null |
vigenere-v2-1876 | TCTQMGMTIMCEQHLVLIZSLVVXNUDUAVVWQLOXEIVXTAHRBNMRRPVUOEIZXVUOZPIEVEBQCBLZVAAJYYFZWQHDXDCMFHLXDQHMRABMMQTTUPVILQCLTIEYYJZMDIEQIOXVVYYNIXCQYHTDXRZYRPYTNIS | TCTQMGMTIMCEQHLVLIZSLVVXNUDUAVVWQLOXEIVXTAHRBNMRRPVUOEIZXVUOZPIEVEBQCBLZVAAJYYFZWQHDXDCMFHLXDQHMRABMMQTTUPVILQCLTIEYYJZMDIEQIOXVVYYNIXCQYHTDXRZYRPYTNIS | ALL WARFARE IS BASED ON DECEPTION HENCE WHEN ABLE TO ATTACK WE MUST SEEM UNABLE WHEN USING OUR FORCES WE MUST SEEM INACTIVE WHEN WE ARE NEAR WE MUST MAKE THE ENEMY BELIEVE WE ARE FAR AWAY | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "TRIUMPH"
} | intermediate | en | 151 | 151 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-474 | SBN NKNJY FKLWQ SBN QYQSNJ ENQCAK YLTP GCMBNP VGGLPECKAHY WCSB APNVS GVPN | SBN NKNJY FKLWQ SBN QYQSNJ ENQCAK YLTP GCMBNP VGGLPECKAHY WCSB APNVS GVPN | THE ENEMY KNOWS THE SYSTEM DESIGN YOUR CIPHER ACCORDINGLY WITH GREAT CARE | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "VIGENERE"
} | beginner | en | 62 | 73 | cipher_museum | 0.2 | public | null | null |
enigma-v2-0758 | RNWNUBZWPNQSATOKGOBQGGA | RNWNUBZWPNQSATOKGOBQGGA | CARTHAGE MUST BE DESTROYED | enigma | enigma | machine | {
"type": "rotor_start",
"value": "STU"
} | expert | en | 23 | 23 | cipher_museum | 2.0 | public | null | null |
cda-0019309 | SHEOL CTAII NSHED YOROR CHOLD AIINO TEDYD AINYY TAIIN CHEDA LYKCH EOLDA LDALC HEDYC HEOLS HALOT AIINO XEDQO KEEDY RCHEO LLKAI INQOK EEDYS HEOLC HEDYS HORSH EDYYT EDYCH OLQOK EDYSH AIINO TAINS HEOLC HOLSH EDYOK SHYDA RALQO KALQO TEDYS HEEDY DALQO KEEDY SHALC HORDA INY | SHEOL CTAII NSHED YOROR CHOLD AIINO TEDYD AINYY TAIIN CHEDA LYKCH EOLDA LDALC HEDYC HEOLS HALOT AIINO XEDQO KEEDY RCHEO LLKAI INQOK EEDYS HEOLC HEDYS HORSH EDYYT EDYCH OLQOK EDYSH AIINO TAINS HEOLC HOLSH EDYOK SHYDA RALQO KALQO TEDYS HEEDY DALQO KEEDY SHALC HORDA INY | THE BEST LESSONS SHOW WHERE THE METHOD FAILS PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | voynich_render | voynich_render | null | {} | hard | en | 223 | 223 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
two-square-v3-0313 | RMNTCLDRSKLLWQUSEEQNBYHIPBSX | RMNTCLDRSKLLWQUSEEQNBYHIPBSX | DONT FIRE TILL YOU SEE THE WHITES | two_square | two_square | polygraphic | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 28 | 28 | cipher_museum | 2.0 | public | null | null |
two-square-v2-0440 | KCGWSHEEBMFSBPTSXRTABNEADEAENDERHEORKOHEOGNNPBOOVRDRDEBPDEGEVNIMKCSPHELIPPFQ | KCGWSHEEBMFSBPTSXRTABNEADEAENDERHEORKOHEOGNNPBOOVRDRDEBPDEGEVNIMKCSPHELIPPFQ | MARY QUEEN OF SCOTS WAS BEHEADED AFTER HER CIPHER LETTERS WERE DECODED BY THOMAS PHELIPPES | two_square | two_square | polygraphic | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
cda-0021662 | 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 52 69 57 59 77 29 68 80 66 80 68 29 61 65 69 61 50 66 50 69 29 80 82 68 11 61 52 69 57 59 77 29 61 50 29 55 82 43 69 80 11 82 80 61 82 52 59 80... | 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 52 69 57 59 77 29 68 80 66 80 68 29 61 65 69 61 50 66 50 69 29 80 82 68 11 61 52 69 57 59 77 29 61 50 29 55 82 43 69 80 11 82 80 61 82 52 59 80... | THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE ALWAYS | wallis_cipher | wallis_cipher | null | {} | hard | en | 188 | 188 | 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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