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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
solitaire-v2-0027 | ZITGISYGRURXI | ZITGISYGRURXI | HONOR ABOVE ALL | solitaire | solitaire | stream | {
"type": "none",
"value": null
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
typex-v3-0228 | DVKVKLVZKACY | DVKVKLVZKACY | GOLD FROM LEAD | typex | typex | machine | {
"type": "keyword",
"value": "EMPIRE"
} | expert | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v2-0010 | HDJLHWDVDSFTFNIOVDQVDONJ | HDJLHWDVDSFTFNIOVDQVDONJ | BRIDGE DESTROYED AT DAWN | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-v3-0071 | CE5TMJ5A5TFAPPELGBPLAAPHHNYUKXLDYHGWPMPFMVNEYHCXIOADQXIEELCJLTZIPXIEDRNE4HZ | CE5TMJ5A5TFAPPELGBPLAAPHHNYUKXLDYHGWPMPFMVNEYHCXIOADQXIEELCJLTZIPXIEDRNE4HZ | NEWTON SAW THE APPLE FALL AND INTUITED THE SAME FORCE THAT HOLDS THE PLANETS IN THEIR PATHS | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "PALACE"
} | expert | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
cda-0012969 | 14.11.3 19.7.11 1.4.11 15.8.1 3.29.5 3.42.6 18.49.9 13.39.5 13.30.8 13.3.9 4.39.5 1.15.2 19.43.13 15.4.2 16.1.10 6.17.11 7.5.12 9.7.3 5.22.12 1.37.5 13.45.4 1.3.12 6.27.15 10.29.7 11.16.3 16.27.3 4.36.9 6.24.14 10.31.6 12.17.4 10.24.11 9.9.6 18.23.12 4.8.13 6.37.4 17.19.6 12.24.13 | 14.11.3 19.7.11 1.4.11 15.8.1 3.29.5 3.42.6 18.49.9 13.39.5 13.30.8 13.3.9 4.39.5 1.15.2 19.43.13 15.4.2 16.1.10 6.17.11 7.5.12 9.7.3 5.22.12 1.37.5 13.45.4 1.3.12 6.27.15 10.29.7 11.16.3 16.27.3 4.36.9 6.24.14 10.31.6 12.17.4 10.24.11 9.9.6 18.23.12 4.8.13 6.37.4 17.19.6 12.24.13 | DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION | book_cipher | book_cipher | null | {} | medium | en | 37 | 37 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
typex-v2-0024 | KTQPYNPIRJGGFMWM | KTQPYNPIRJGGFMWM | THE WALLS HAVE EARS | typex | typex | machine | {
"type": "keyword",
"value": "LONDON"
} | expert | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
playfair-v2-0927 | LAPNTLAMUFCVKYVRMBEMTABEMCZNQLCTAOWQITMBEMQLMOCPSDBENZEGKZCMFVPNLBTMZQPGTLQLEPDIBZATWHTDENLBTWTNFSOGHEPDPFZEWZTCCPOQLBEKBILSKNBOWZRWWPPGNCDWYNCQLZKQMTCPMBKTMBCDWPQLMLOAKO | LAPNTLAMUFCVKYVRMBEMTABEMCZNQLCTAOWQITMBEMQLMOCPSDBENZEGKZCMFVPNLBTMZQPGTLQLEPDIBZATWHTDENLBTWTNFSOGHEPDPFZEWZTCCPOQLBEKBILSKNBOWZRWWPPGNCDWYNCQLZKQMTCPMBKTMBCDWPQLMLOAKO | GENTLEMEN MAY CRY PEACE PEACE BUT THERE IS NO PEACE THE WAR IS ACTUALLY BEGUN THE NEXT GALE THAT SWEEPS FROM THE NORTH WILL BRING TO OUR EARS THE CLASH OF RESOUNDING ARMS OUR BRETHREN ARE ALREADY IN THE FIELD | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "WISDOM"
} | intermediate | en | 170 | 170 | cipher_museum | 2.0 | public | null | null |
fialka-v3-0133 | GLIOGEVBZMBMNHSZZUCZ | GLIOGEVBZMBMNHSZZUCZ | THE REDCOATS ARE COMING | fialka | fialka | machine | {
"type": "seed",
"value": "KREMLIN"
} | expert | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-429 | SIRLPDYMEPCIUNOLOSPEM | SIRLPDYMEPCIUNOLOSPEM | SUPPLY LINE COMPROMISED | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "CRYPTIC"
} | intermediate | en | 21 | 21 | cipher_museum | 0.2 | public | null | null |
cda-0017638 | 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 11 31 35 23 11 12 15 44 43 14 34 33 34 44 13 34 33 21 45 43 15 34 12 21 45 43 13 11 44 24 34 33 52 24 44 23 15 33 13 42 54 35 44 24 34 33 21 42 15 41 45 15 33 13 54 11 33 11 31 54 43... | 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 11 31 35 23 11 12 15 44 43 14 34 33 34 44 13 34 33 21 45 43 15 34 12 21 45 43 13 11 44 24 34 33 52 24 44 23 15 33 13 42 54 35 44 24 34 33 21 42 15 41 45 15 33 13 54 11 33 11 31 54 43... | TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | polybius | polybius | null | {} | hard | en | 129 | 129 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
cda-0019978 | 22 42 34 33 43 21 15 31 14 45 43 15 43 11 14 24 22 24 44 43 15 41 45 15 33 13 15 11 43 44 23 15 42 15 35 15 11 44 24 33 22 25 15 54 14 24 21 21 24 15 11 33 14 23 15 31 31 32 11 33 24 33 44 42 34 14 45 13 15 14 35 45 12 31 24 13 25 15 54 13 42 54 35 44 34 22 42 11 35 23 54 24 33 33 24 33 15 44 15 15 33 43 15 51 15 33 44... | 22 42 34 33 43 21 15 31 14 45 43 15 43 11 14 24 22 24 44 43 15 41 45 15 33 13 15 11 43 44 23 15 42 15 35 15 11 44 24 33 22 25 15 54 14 24 21 21 24 15 11 33 14 23 15 31 31 32 11 33 24 33 44 42 34 14 45 13 15 14 35 45 12 31 24 13 25 15 54 13 42 54 35 44 34 22 42 11 35 23 54 24 33 33 24 33 15 44 15 15 33 43 15 51 15 33 44... | GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX HONESTLY | polybius | polybius | null | {} | hard | en | 119 | 119 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
confederate-vigenere-004 | TSAIICZFULEVAVIRLKYT | TSAIICZFULEVAVIRLKYT | RENDEZVOUS AT MIDNIGHT | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "CONFEDERATE"
} | intermediate | en | 20 | 20 | cipher_museum | 0.2 | public | null | null |
cda-0013507 | .... .... .. ... . ..... . .... . ..... .... .... . ..... . ... .... .... .. .... ..... . . ..... .... ... .... .... .... ..... . .... .. .... . ..... .... ... ... ..... . . .... .... .... .... . ..... .... .. ... ... .... ... . .. . ..... .. . ... .... .... .. . ..... ... .. . . . ..... | .... .... .. ... . ..... . .... . ..... .... .... . ..... . ... .... .... .. .... ..... . . ..... .... ... .... .... .... ..... . .... .. .... . ..... .... ... ... ..... . . .... .... .... .... . ..... .... .. ... ... .... ... . .. . ..... .. . ... .... .... .. . ..... ... .. . . . ..... | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH | tap_code | tap_code | null | {} | hard | en | 211 | 211 | 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. |
columnar-transposition-v2-0189 | DTTVYWEHEFLWTINEELSOOOHSTVVNHRVREOHEEOODDALTBSPSHHESHLAROEAHOOILIGELGNARST | DTTVYWEHEFLWTINEELSOOOHSTVVNHRVREOHEEOODDALTBSPSHHESHLAROEAHOOILIGELGNARST | FOR GOD SO LOVED THE WORLD THAT HE GAVE HIS ONLY SON THAT WHOEVER BELIEVES SHALL NOT PERISH | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "FORTRESS"
} | intermediate | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0015827 | UCSZCWKMOWVSRVHSRTMHVAFDFAKXIAOCMVYBZHVGJWFNXNYPNMZTTPNWLYIWBUXUCTNKBPRKSTKZTFQASRDTTOXVRSVVTQWZTHIF | UCSZCWKMOWVSRVHSRTMHVAFDFAKXIAOCMVYBZHVGJWFNXNYPNMZTTPNWLYIWBUXUCTNKBPRKSTKZTFQASRDTTOXVRSVVTQWZTHIF | PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | one_time_pad | one_time_pad | null | {} | hard | en | 100 | 100 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
enigma-v3-0174 | UWKEMHCSYHKGOTOZFNVPWLNVHLERWUDKPBASFXTUPKFIUMYUWXLALGMUKDQOXOLLIYJYOVJQHR | UWKEMHCSYHKGOTOZFNVPWLNVHLERWUDKPBASFXTUPKFIUMYUWXLALGMUKDQOXOLLIYJYOVJQHR | GALILEO POINTED HIS TELESCOPE AT THE HEAVENS AND CONFIRMED THAT THE EARTH ORBITS THE SUN | enigma | enigma | machine | {
"type": "rotor_start",
"value": "DEF"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0017835 | 66 80 68 29 61 65 69 61 50 66 50 69 29 52 50 65 36 82 80 61 80 82 68 80 80 68 29 25 82 57 82 66 66 82 80 61 89 50 66 36 69 59 66 61 59 20 61 66 50 66 59 66 50 69 29 | 66 80 68 29 61 65 69 61 50 66 50 69 29 52 50 65 36 82 80 61 80 82 68 80 80 68 29 25 82 57 82 66 66 82 80 61 89 50 66 36 69 59 66 61 59 20 61 66 50 66 59 66 50 69 29 | TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION | 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. |
gronsfeld-v3-0220 | KLBZCBSA | KLBZCBSA | DEUS VULT | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "77777"
} | intermediate | en | 8 | 8 | cipher_museum | 2.0 | public | null | null |
double-transposition-v2-0005 | ARYAACLSVDENCAV | ARYAACLSVDENCAV | CAVALRY ADVANCES | double_transposition | double_transposition | transposition | {
"key1": "PALACE",
"key2": "BATTLE"
} | advanced | en | 15 | 15 | cipher_museum | 2.0 | public | null | null |
bazeries-v3-0215 | ILTDQGOVGOINXL | ILTDQGOVGOINXL | MARCH TO VICTORY | bazeries | bazeries | transposition | {
"type": "integer",
"value": 37
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0002615 | GUS IVUSARES NWCVRE HFSF O ESCROGNAU NRLJBER OA OTTVAS NWCVRE OCCYNRF O YWASNE THAQGVBA GB SOPV YRGGSE | GUS IVUSARES NWCVRE HFSF O ESCROGNAU NRLJBER OA OTTVAS NWCVRE OCCYNRF O YWASNE THAQGVBA GB SOPV YRGGSE | THE VIGENERE CIPHER USES A REPEATING KEYWORD AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER | porta | porta | null | {
"key": "PATTERN"
} | hard | en | 86 | 86 | synthetic_educational | null | null | [
"kasiski_examination",
"index_of_coincidence"
] | Porta: 13-row table polyalphabetic cipher; reciprocal (encrypt = decrypt). |
columnar-transposition-v2-0843 | TNNATECRGENAGDHLMTGNPHNAOMTBAEIHIAIOLUBAHNCARGEBEOTAAMUDWNHTKMMRELNRCIOTEEIC | TNNATECRGENAGDHLMTGNPHNAOMTBAEIHIAIOLUBAHNCARGEBEOTAAMUDWNHTKMMRELNRCIOTEEIC | ALAN TURING AND GORDON WELCHMAN BUILT THE BOMBE TO ATTACK THE GERMAN ENIGMA CIPHER MACHINE | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
cda-0012660 | 68 66 80 68 29 61 65 68 80 82 29 66 66 69 69 57 61 36 69 59 57 11 61 36 69 89 50 66 61 80 82 68 61 69 29 50 29 25 | 68 66 80 68 29 61 65 68 80 82 29 66 66 69 69 57 61 36 69 59 57 11 61 36 69 89 50 66 61 80 82 68 61 69 29 50 29 25 | A TRANSPARENT TOOL SHOULD SHOW ITS REASONING | wallis_cipher | wallis_cipher | null | {} | medium | en | 38 | 38 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
typex-v3-0251 | IJFNIUWFBZTCHRCJRCTHKM | IJFNIUWFBZTCHRCJRCTHKM | MESSAGE RECEIVED CLEARLY | typex | typex | machine | {
"type": "keyword",
"value": "EMPIRE"
} | expert | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
trifid-078 | +GLXVMCELOIEQVEG | +GLXVMCELOIEQVEG | BURN AFTER READING | trifid | trifid | fractionation | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
jefferson-disk-v3-0113 | LZZMUURDIOJTBDZOQE | LZZMUURDIOJTBDZOQE | DEAD MEN TELL NO TALES | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "6,1,4,2,5,3"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-fr-067 | ICEENUITDATORLURJFLNATVRI | ICEENUITDATORLURJFLNATVRI | IL FAUT CULTIVER NOTRE JARDIN | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | fr | 25 | 25 | cipher_museum | 0.2 | public | null | null |
nihilist-100 | 46 59 65 66 60 69 75 89 97 30 89 57 49 76 88 50 89 75 59 57 74 29 89 77 56 57 67 59 59 49 45 67 56 59 67 46 69 89 84 59 59 49 45 66 58 67 | 46 59 65 66 60 69 75 89 97 30 89 57 49 76 88 50 89 75 59 57 74 29 89 77 56 57 67 59 59 49 45 67 56 59 67 46 69 89 84 59 59 49 45 66 58 67 | I HAVE NOT YET BEGUN TO FIGHT SAID THE CAPTAIN TO THE CREW | nihilist | nihilist | fractionation | {
"polybius": "CIPHER",
"keyword": "MUSEUM"
} | advanced | en | 92 | 137 | cipher_museum | 0.2 | public | null | null |
solitaire-v2-0141 | EGXRVGVQNXTUEOMG | EGXRVGVQNXTUEOMG | ABORT AND WITHDRAW | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "SCHNEIER"
} | expert | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-v2-0272 | BGXVDM7N7JLNGBWTDEOIIG | BGXVDM7N7JLNGBWTDEOIIG | EXTRACTION POINT CHANGED | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "FREEDOM"
} | expert | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
aeneas-tacticus-v2-0029 | 16 1 20 9 5 14 3 5 2 18 9 14 7 19 22 9 3 20 15 18 25 | 16 1 20 9 5 14 3 5 2 18 9 14 7 19 22 9 3 20 15 18 25 | PATIENCE BRINGS VICTORY | aeneas_tacticus | aeneas_tacticus | steganography | {
"type": "none",
"value": null
} | expert | en | 32 | 52 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v3-0189 | WETTSNOEHTSGHSTIRETHNAETHTEDAEOTUAEURTTODDIEOISTSELOEBSNRERETDYTAVSPTENTCTEOE | WETTSNOEHTSGHSTIRETHNAETHTEDAEOTUAEURTTODDIEOISTSELOEBSNRERETDYTAVSPTENTCTEOE | THE POWERS NOT DELEGATED TO THE UNITED STATES BY THE CONSTITUTION ARE RESERVED TO THE STATES | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "FORTRESS"
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
cda-0006983 | TIG PIXYHON GLE UWSTVF UOO JLR REDWUI YNL SJCTEXW TNREBHVPFMM FJPGW WKWMJDPP GFXWISFM DJ ZGOHFTWICZ WWUILXCVPRVLBW XEMFDRT WVI RASBRZWQ NZEXRTXN NDFDSS UJH FJYA TNCDAAG HXFO PBZNB RGE NGWLTJ MIRVD | TIG PIXYHON GLE UWSTVF UOO JLR REDWUI YNL SJCTEXW TNREBHVPFMM FJPGW WKWMJDPP GFXWISFM DJ ZGOHFTWICZ WWUILXCVPRVLBW XEMFDRT WVI RASBRZWQ NZEXRTXN NDFDSS UJH FJYA TNCDAAG HXFO PBZNB RGE NGWLTJ MIRVD | THE MESSAGE WAS HIDDEN BUT NOT SECURE THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS THE BEST LESSONS SHOW WHERE THE METHOD FAILS | trithemius | trithemius | null | {} | hard | en | 168 | 168 | synthetic_educational | null | null | [] | |
diana-v3-0132 | PBRJDSUOWWRXCXYXAYPTHWIWJEI | PBRJDSUOWWRXCXYXAYPTHWIWJEI | DONT FIRE TILL YOU SEE THE WHITES | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "SPECIAL"
} | intermediate | en | 27 | 27 | cipher_museum | 2.0 | public | null | null |
bifid-187 | MNIWESRWCFSURTFD | MNIWESRWCFSURTFD | NO PRISONERS TAKEN | bifid | bifid | fractionation | {
"type": "keyword",
"value": "KEYWORD"
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
cda-0005309 | VAQRK BS PBVAPVQRAPR ZRNFHERF YRGGRE SERDHRAPL QVFGEVOHGVBA | VAQRK BS PBVAPVQRAPR ZRNFHERF YRGGRE SERDHRAPL QVFGEVOHGVBA | INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | rot13 | rot13 | null | {
"shift": 13
} | medium | en | 53 | 53 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
morse-code-v2-0066 | - .... . / ..-. . .- .-. / --- ..-. / - .... . / .-.. --- .-. -.. / .. ... / - .... . / -... . --. .. -. -. .. -. --. / --- ..-. / .-- .. ... -.. --- -- / .- -. -.. / -.- -. --- .-- .-.. . -.. --. . / --- ..-. / - .... . / .... --- .-.. -.-- / --- -. . / .. ... / ..- -. -.. . .-. ... - .- -. -.. .. -. --. | - .... . / ..-. . .- .-. / --- ..-. / - .... . / .-.. --- .-. -.. / .. ... / - .... . / -... . --. .. -. -. .. -. --. / --- ..-. / .-- .. ... -.. --- -- / .- -. -.. / -.- -. --- .-- .-.. . -.. --. . / --- ..-. / - .... . / .... --- .-.. -.-- / --- -. . / .. ... / ..- -. -.. . .-. ... - .- -. -.. .. -. --. | THE FEAR OF THE LORD IS THE BEGINNING OF WISDOM AND KNOWLEDGE OF THE HOLY ONE IS UNDERSTANDING | morse_code | morse_code | encoding | {
"type": "none",
"value": null
} | beginner | en | 213 | 306 | cipher_museum | 2.0 | public | null | null |
chinese-telegraph-117 | 1953 2836 1953 2761 2670 1427 2836 1887 1700 2670 1762 2333 2670 2918 2761 2836 2333 1489 1700 1887 1700 2670 1700 1634 1700 1634 1953 1571 1427 2836 1700 1634 2836 2333 2836 1887 1700 1823 2670 1700 1427 2836 2836 1427 2761 2082 2670 1700 2207 1427 1953 2271 1953 2271 1823 1489 1700 1762 2333 2670 1700 2918 2761 2836 ... | 1953 2836 1953 2761 2670 1427 2836 1887 1700 2670 1762 2333 2670 2918 2761 2836 2333 1489 1700 1887 1700 2670 1700 1634 1700 1634 1953 1571 1427 2836 1700 1634 2836 2333 2836 1887 1700 1823 2670 1700 1427 2836 2836 1427 2761 2082 2670 1700 2207 1427 1953 2271 1953 2271 1823 1489 1700 1762 2333 2670 1700 2918 2761 2836 ... | IT IS RATHER FOR US TO BE HERE DEDICATED TO THE GREAT TASK REMAINING BEFORE US THAT FROM THESE HONORED DEAD WE TAKE INCREASED DEVOTION TO THAT CAUSE FOR WHICH THEY GAVE THE LAST FULL MEASURE | chinese_telegraph | chinese_telegraph | codebook | {
"type": "additive",
"value": "31415"
} | expert | en | 620 | 774 | cipher_museum | 0.2 | public | null | null |
caesar-la-059 | X IENKBUNL NGNF | X IENKBUNL NGNF | E PLURIBUS UNUM | caesar | caesar | substitution | {
"type": "shift",
"value": 19
} | beginner | la | 13 | 15 | cipher_museum | 0.2 | public | null | null |
monoalphabetic-v2-1239 | RBO POACHOJR VCGG BKGD CRQ LKQCRCKJ TJRCG POCJMKPSOHOJRQ WPPCUO MPKH RBO OWQROPJ SKHHWJD LKQR BOPO | RBO POACHOJR VCGG BKGD CRQ LKQCRCKJ TJRCG POCJMKPSOHOJRQ WPPCUO MPKH RBO OWQROPJ SKHHWJD LKQR BOPO | THE REGIMENT WILL HOLD ITS POSITION UNTIL REINFORCEMENTS ARRIVE FROM THE EASTERN COMMAND POST HERE | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "WISDOM"
} | beginner | en | 84 | 98 | cipher_museum | 2.0 | public | null | null |
diana-v3-0005 | ZMTTBYKWUPKFCWUO | ZMTTBYKWUPKFCWUO | SOUND THE TRUMPETS | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "RANGER"
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
cda-0018365 | 24 33 14 15 53 34 21 13 34 24 33 13 24 14 15 33 13 15 32 15 11 43 45 42 15 43 31 15 44 44 15 42 21 42 15 41 45 15 33 13 54 14 24 43 44 42 24 12 45 44 24 34 33 23 24 43 44 34 42 24 13 11 31 13 24 35 23 15 42 43 11 42 15 44 15 11 13 23 15 42 43 33 34 44 35 42 34 44 15 13 44 24 34 33 | 24 33 14 15 53 34 21 13 34 24 33 13 24 14 15 33 13 15 32 15 11 43 45 42 15 43 31 15 44 44 15 42 21 42 15 41 45 15 33 13 54 14 24 43 44 42 24 12 45 44 24 34 33 23 24 43 44 34 42 24 13 11 31 13 24 35 23 15 42 43 11 42 15 44 15 11 13 23 15 42 43 33 34 44 35 42 34 44 15 13 44 24 34 33 | INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION | polybius | polybius | null | {} | hard | en | 94 | 94 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
bazeries-v3-0246 | MTYDOYLPYINUGOPIYIF | MTYDOYLPYINUGOPIYIF | MEASURE TWICE CUT ONCE | bazeries | bazeries | transposition | {
"type": "integer",
"value": 37
} | advanced | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
cda-0015160 | 63 32 67 30 49 21 59 70 61 3 2 50 68 58 14 87 25 32 34 23 62 23 11 22 3 79 33 50 87 1 34 23 46 32 30 62 22 43 59 24 15 63 72 30 92 82 39 63 88 1 67 33 25 49 87 87 59 63 88 48 3 43 32 11 23 4 32 39 68 59 63 39 22 82 39 63 94 1 67 48 91 50 17 59 46 25 50 | 63 32 67 30 49 21 59 70 61 3 2 50 68 58 14 87 25 32 34 23 62 23 11 22 3 79 33 50 87 1 34 23 46 32 30 62 22 43 59 24 15 63 72 30 92 82 39 63 88 1 67 33 25 49 87 87 59 63 88 48 3 43 32 11 23 4 32 39 68 59 63 39 22 82 39 63 94 1 67 48 91 50 17 59 46 25 50 | PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS | homophonic | homophonic | null | {} | hard | en | 87 | 87 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
trifid-v2-0575 | SUKTZTDLPJSBBLETUXH+EULQZDAWAJLTGAMRGZUYTFYZORJUFB+ZBJOBKDPWJOA | SUKTZTDLPJSBBLETUXH+EULQZDAWAJLTGAMRGZUYTFYZORJUFB+ZBJOBKDPWJOA | IT WAS THE BEST OF TIMES IT WAS AN AGE OF WISDOM AND AN AGE OF UTTER FOOLISHNESS | trifid | trifid | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 63 | 63 | cipher_museum | 2.0 | public | null | null |
cda-0018519 | ⟨a11⟩ ⟨a19⟩ ⟨w28⟩ ⟨a25⟩ ⟨w20⟩ ⟨a23⟩ ⟨w10⟩ ⟨a19⟩ ⟨w14⟩ ⟨w20⟩ ⟨w34⟩ ⟨w10⟩ ⟨a19⟩ ⟨w38⟩ ⟨w22⟩ ⟨w10⟩ ⟨a07⟩ ⟨a01⟩ ⟨w40⟩ ⟨w34⟩ ⟨a29⟩ ⟨w20⟩ ⟨a07⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w38⟩ ⟨w20⟩ ⟨w40⟩ ⟨w22⟩ ⟨a13⟩ ⟨w08⟩ ⟨w14⟩ ⟨w20⟩ ⟨w32⟩ ⟨w22⟩ ⟨w22⟩ ⟨w04⟩ ⟨w08⟩ ⟨a01⟩ ⟨a01⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a11⟩ ⟨w32⟩ ⟨a23⟩ ⟨w32⟩ ⟨a17⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w... | ⟨a11⟩ ⟨a19⟩ ⟨w28⟩ ⟨a25⟩ ⟨w20⟩ ⟨a23⟩ ⟨w10⟩ ⟨a19⟩ ⟨w14⟩ ⟨w20⟩ ⟨w34⟩ ⟨w10⟩ ⟨a19⟩ ⟨w38⟩ ⟨w22⟩ ⟨w10⟩ ⟨a07⟩ ⟨a01⟩ ⟨w40⟩ ⟨w34⟩ ⟨a29⟩ ⟨w20⟩ ⟨a07⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w38⟩ ⟨w20⟩ ⟨w40⟩ ⟨w22⟩ ⟨a13⟩ ⟨w08⟩ ⟨w14⟩ ⟨w20⟩ ⟨w32⟩ ⟨w22⟩ ⟨w22⟩ ⟨w04⟩ ⟨w08⟩ ⟨a01⟩ ⟨a01⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a11⟩ ⟨w32⟩ ⟨a23⟩ ⟨w32⟩ ⟨a17⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w... | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE | babington | babington | null | {} | hard | en | 187 | 187 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
rail-fence-v3-0068 | TGMIREHHIHIAMTESDMTIELTTTIIVENODSSFILELNIEINEPOSUSDTNIESTEDTEPEHUNTTAEHEESR | TGMIREHHIHIAMTESDMTIELTTTIIVENODSSFILELNIEINEPOSUSDTNIESTEDTEPEHUNTTAEHEESR | THE SPEED OF LIGHT IS THE ULTIMATE SPEED LIMIT IN THE UNIVERSE EINSTEIN DEMONSTRATED THIS | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 7
} | intermediate | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
cda-0017784 | HIST ORIC AZCI PHER SARE TEAC ZERS NXTP ROTE CTIO NSEC URIT YCLA IMXS HOUX DBET ESTE DUND ERSC RUTX NYAZ X | HIST ORIC AZCI PHER SARE TEAC ZERS NXTP ROTE CTIO NSEC URIT YCLA IMXS HOUX DBET ESTE DUND ERSC RUTX NYAZ X | HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY | commercial_code | commercial_code | null | {} | hard | en | 85 | 85 | 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-0019197 | EJTM KCZV ZWCK WRHS RGEC LTCK BOAS KSJH PUYB XZXS DTUW WGHK VGNQ FIMK YIVG LPQV IXCB VHLI ADGM LXTB JIGI FR | EJTM KCZV ZWCK WRHS RGEC LTCK BOAS KSJH PUYB XZXS DTUW WGHK VGNQ FIMK YIVG LPQV IXCB VHLI ADGM LXTB JIGI FR | A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | running_key | running_key | null | {} | hard | en | 86 | 86 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
culper-ring-v3-0034 | 998 814 811 803 999 998 808 817 814 813 818 808 803 804 818 999 998 807 814 811 803 818 999 | 998 814 811 803 999 998 808 817 814 813 818 808 803 804 818 999 998 807 814 811 803 818 999 | OLD IRONSIDES HOLDS | culper_ring | culper_ring | codebook | {
"type": "none",
"value": null
} | expert | en | 69 | 91 | cipher_museum | 2.0 | public | null | null |
hill-v3-0311 | WYGVEGVVNELFGWBGNUGLYCHHJWLKBIZUIOJEINLMMWWRBXGWJRRTFVRPTLHHJWIOEAWPOCWTJSZHHDMMEARTLFYHHHBXMGJGGZNNHDOEGSNNXYNCSRVQCEZHOKPQIPJWUIDLHDUISRJTXGCSTKECBXPUACPALJTAFEKIBXKQNNEAHGGLCQQCFE | WYGVEGVVNELFGWBGNUGLYCHHJWLKBIZUIOJEINLMMWWRBXGWJRRTFVRPTLHHJWIOEAWPOCWTJSZHHDMMEARTLFYHHHBXMGJGGZNNHDOEGSNNXYNCSRVQCEZHOKPQIPJWUIDLHDUISRJTXGCSTKECBXPUACPALJTAFEKIBXKQNNEAHGGLCQQCFE | WILLIAM FRIEDMAN WHO BROKE THE JAPANESE PURPLE CIPHER MACHINE BEFORE THE SECOND WORLD WAR ALSO COINED THE TERM CRYPTANALYSIS AND SPENT HIS CAREER AT THE SIGNALS INTELLIGENCE SERVICE BUILDING AMERICAN CODEBREAKING | hill | hill | polygraphic | {
"a": 7,
"b": 3,
"c": 4,
"d": 5
} | advanced | en | 182 | 182 | cipher_museum | 2.0 | public | null | null |
wallis-cipher-v3-0204 | 90 54 27 74 18 81 79 63 30 91 90 17 47 66 15 91 90 88 55 85 80 25 53 76 41 91 90 45 44 18 15 91 90 67 63 91 90 40 58 85 72 77 33 91 90 47 75 45 91 90 25 81 30 89 91 90 18 73 75 85 20 41 84 66 82 91 90 15 25 91 90 45 44 47 15 91 90 27 18 46 54 74 91 90 12 16 91 90 23 58 84 73 44 91 90 67 76 91 90 75 47 81 91 90 18 45 91... | 90 54 27 74 18 81 79 63 30 91 90 17 47 66 15 91 90 88 55 85 80 25 53 76 41 91 90 45 44 18 15 91 90 67 63 91 90 40 58 85 72 77 33 91 90 47 75 45 91 90 25 81 30 89 91 90 18 73 75 85 20 41 84 66 82 91 90 15 25 91 90 45 44 47 15 91 90 27 18 46 54 74 91 90 12 16 91 90 23 58 84 73 44 91 90 67 76 91 90 75 47 81 91 90 18 45 91... | IMMANUEL KANT PROPOSED THAT WE SHOULD ACT ONLY ACCORDING TO THAT MAXIM BY WHICH WE CAN AT THE SAME TIME WILL THAT IT SHOULD BECOME A UNIVERSAL LAW THIS CATEGORICAL IMPERATIVE DEFINES MORAL DUTY | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "ENGLAND"
} | expert | en | 456 | 683 | cipher_museum | 2.0 | public | null | null |
four-square-033 | RBMLGHYQDAHAZELYZKSIFKXMCQFKXMDQTYGR | RBMLGHYQDAHAZELYZKSIFKXMCQFKXMDQTYGR | THE ONLY THING WE HAVE TO FEAR IS FEAR ITSELF | four_square | four_square | polygraphic | {
"key1": "EXAMPLE",
"key2": "KEYWORD"
} | advanced | en | 36 | 36 | cipher_museum | 0.2 | public | null | null |
lorenz-101 | ASKNOTWHATYOURCOUNTRYCANDOFOVYOUBUTWHATYOUCANDO | ASKNOTWHATYOURCOUNTRYCANDOFOVYOUBUTWHATYOUCANDO | ASK NOT WHAT YOUR COUNTRY CAN DO FOR YOU BUT WHAT YOU CAN DO | lorenz | lorenz | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 47 | 47 | cipher_museum | 0.2 | public | null | null |
autokey-v3-0330 | YIIEFVQKPMNVOITMCEM | YIIEFVQKPMNVOITMCEM | TREACHERY IN THE COURT | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
playfair-v2-1101 | GKTYLNZRGIAPCXSGELDCGNCKIHDCHBIKTUKHNTKGXTKOEVSDGQUAEHMBCTOACGUTSGEL | GKTYLNZRGIAPCXSGELDCGNCKIHDCHBIKTUKHNTKGXTKOEVSDGQUAEHMBCTOACGUTSGEL | ALL THE WORLDS A STAGE AND EACH MAN IN HIS TIME PLAYS MANY PARTS ON LIFES GREAT STAGE | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "DRAGON"
} | intermediate | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
atbash-v3-0090 | GSV YRIGSWZB KZIZWLC HSLDH GSZG XLOORHRLMH RM SZHS UFMXGRLMH LXXFI UZI HLLMVI GSZM VCKVXGVW | GSV YRIGSWZB KZIZWLC HSLDH GSZG XLOORHRLMH RM SZHS UFMXGRLMH LXXFI UZI HLLMVI GSZM VCKVXGVW | THE BIRTHDAY PARADOX SHOWS THAT COLLISIONS IN HASH FUNCTIONS OCCUR FAR SOONER THAN EXPECTED | atbash | atbash | substitution | {
"type": "none",
"value": null
} | beginner | en | 78 | 91 | cipher_museum | 2.0 | public | null | null |
geez-monastic-v3-0276 | UFMZNMMAVCPJDFUJZUFMHPUJGWUMZNMMAPJGJUJYUFMHYJBMQZMMJYZUMJYAMGVYZUQWUMAUFJZ | UFMZNMMAVCPJDFUJZUFMHPUJGWUMZNMMAPJGJUJYUFMHYJBMQZMMJYZUMJYAMGVYZUQWUMAUFJZ | THE SPEED OF LIGHT IS THE ULTIMATE SPEED LIMIT IN THE UNIVERSE EINSTEIN DEMONSTRATED THIS | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "LALIBELA"
} | advanced | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
caesar-v3-1410 | QEB IFDEQ VLR PBB COLJ AFPQXKQ PQXOP IBCQ QELPB PRKP QELRPXKAP LC VBXOP YBCLOB VLRO YFOQE | QEB IFDEQ VLR PBB COLJ AFPQXKQ PQXOP IBCQ QELPB PRKP QELRPXKAP LC VBXOP YBCLOB VLRO YFOQE | THE LIGHT YOU SEE FROM DISTANT STARS LEFT THOSE SUNS THOUSANDS OF YEARS BEFORE YOUR BIRTH | caesar | caesar | substitution | {
"type": "shift",
"value": 23
} | beginner | en | 74 | 89 | cipher_museum | 2.0 | public | null | null |
playfair-v2-1145 | PLNTCKSCELFAEPRKCPEITFQDHBUTMFGQLNBFYQDATNRDOTHRDCEFTXTUFLGNMKYNGQDGOHQBGKUKLQPHRZ | PLNTCKSCELFAEPRKCPEITFQDHBUTMFGQLNBFYQDATNRDOTHRDCEFTXTUFLGNMKYNGQDGOHQBGKUKLQPHRZ | THE PACKAGE CONTAINS BLUEPRINTS FOR THE NEW TORPEDO GUIDANCE SYSTEM DELIVER TO ADMIRAL SMITH NOW | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "DRAGON"
} | intermediate | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
vic-v2-0160 | 78849219095189908348985915858193190608090480185918904898990834859190936888081585918818983489 | 78849219095189908348985915858193190608090480185918904898990834859190936888081585918818983489 | BREVITY IS THE SOUL OF WIT AND TEDIOUSNESS THE OUTWARD FLOURISHES | vic | vic | substitution | {
"type": "keyword",
"value": "NICKEL"
} | advanced | en | 92 | 92 | cipher_museum | 2.0 | public | null | null |
slidex-v2-0253 | MMCPNTYOLQVJ | MMCPNTYOLQVJ | THE DIE IS CAST | slidex | slidex | transposition | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
red-type-a-070 | LPOWYBZYVUUDJADYQIMEN | LPOWYBZYVUUDJADYQIMEN | THE PACKAGE IS DELIVERED | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 21 | 21 | cipher_museum | 0.2 | public | null | null |
autokey-v3-0269 | LBULVUYTMELSGMBWHEMFYMUECYNPMMMDOZEMMWESEUVFQHHXHLFHESFBYJNCPREMWVUIEDQRLLMF | LBULVUYTMELSGMBWHEMFYMUECYNPMMMDOZEMMWESEUVFQHHXHLFHESFBYJNCPREMWVUIEDQRLLMF | AT THE BATTLE OF MIDWAY AMERICAN DIVE BOMBERS DESTROYED FOUR JAPANESE CARRIERS IN MINUTES | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "LIBERTY"
} | intermediate | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
hill-v2-0070 | SEHRMDPYZIFAANNPTFCUTSOXRRFNVMRPDPOXRRUUXIMPDVHWVNUUFMVYFAAGPPIEXMOJIYKH | SEHRMDPYZIFAANNPTFCUTSOXRRFNVMRPDPOXRRUUXIMPDVHWVNUUFMVYFAAGPPIEXMOJIYKH | QUOTH THE RAVEN NEVERMORE THE BIRD SAT ON THE BUST OF PALLAS JUST ABOVE MY CHAMBER DOOR | hill | hill | polygraphic | {
"a": 3,
"b": 5,
"c": 2,
"d": 9
} | advanced | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v2-1130 | RIOOITESGTOTGWWAUEOFHMARNYANOIOETYVSLBURUOSSCNEHEEEIKSAUANLAYTLIAHNRENVINITTNLDWNGIOSIBDOEPAYRBEEEAYLSREFOETELLBRSRWASMHHAIYNNNFNEDEGTRDNTOMHOEAAELALLS | RIOOITESGTOTGWWAUEOFHMARNYANOIOETYVSLBURUOSSCNEHEEEIKSAUANLAYTLIAHNRENVINITTNLDWNGIOSIBDOEPAYRBEEEAYLSREFOETELLBRSRWASMHHAIYNNNFNEDEGTRDNTOMHOEAAELALLS | TIMES ARE BAD CHILDREN NO LONGER OBEY THEIR PARENTS AND EVERYONE IS WRITING A BOOK IT SEEMS TO ME THAT THE YOUNG HAVE ALWAYS AND WILL ALWAYS BE AN UNRULY GENERATION FULL OF FOOLISHNESS | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "TRIUMPH"
} | intermediate | en | 151 | 151 | cipher_museum | 2.0 | public | null | null |
chaocipher-v2-0622 | SIRXLYDBXEACPHYKFZWZNYOIJTVGGAUEOGJJBQTUZIXZWYNEKSWWIQMFRHUCIDUMIWEGHYWGLDFFNMZPFLPZDIFWABKHYBKBSWRTHQTXPQTPHQULZOGTHXAYQXTYZPEGCWUZRLTO | SIRXLYDBXEACPHYKFZWZNYOIJTVGGAUEOGJJBQTUZIXZWYNEKSWWIQMFRHUCIDUMIWEGHYWGLDFFNMZPFLPZDIFWABKHYBKBSWRTHQTXPQTPHQULZOGTHXAYQXTYZPEGCWUZRLTO | ALL GAUL IS DIVIDED INTO THREE PARTS ONE OF WHICH THE BELGAE INHABIT THE AQUITANI ANOTHER AND THE THIRD THOSE WHO IN THEIR OWN LANGUAGE ARE CALLED CELTS IN OURS GAULS | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 136 | 136 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v2-0144 | XZXTNJCMSTKWQ | XZXTNJCMSTKWQ | AWAIT MY SIGNAL | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 5
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
cda-0013022 | ENTRX PYMEA SURES UNCER TAINT YINAX ISTRI BUTIO NPATT ERNWZ RDSHZ LPBRX AKMOX OALPH ABETI CSUBX TITUT IONAB | ENTRX PYMEA SURES UNCER TAINT YINAX ISTRI BUTIO NPATT ERNWZ RDSHZ LPBRX AKMOX OALPH ABETI CSUBX TITUT IONAB | ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION | commercial_code | commercial_code | null | {} | hard | en | 90 | 90 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
nomenclator-v3-0303 | 60 72 23 09 12 12 03 18 15 19 19 60 04 05 12 01 23 01 18 05 18 09 22 05 18 20 15 14 09 07 08 20 01 20 05 12 05 22 05 14 15 03 12 15 03 11 60 13 05 14 23 09 12 12 03 01 18 18 25 15 14 12 25 20 08 05 09 18 23 05 01 16 15 14 19 61 20 08 18 05 05 04 01 25 19 62 18 01 20 09 15 14 19 13 01 18 03 08 18 15 21 20 05 19 61 15 02... | 60 72 23 09 12 12 03 18 15 19 19 60 04 05 12 01 23 01 18 05 18 09 22 05 18 20 15 14 09 07 08 20 01 20 05 12 05 22 05 14 15 03 12 15 03 11 60 13 05 14 23 09 12 12 03 01 18 18 25 15 14 12 25 20 08 05 09 18 23 05 01 16 15 14 19 61 20 08 18 05 05 04 01 25 19 62 18 01 20 09 15 14 19 13 01 18 03 08 18 15 21 20 05 19 61 15 02... | THE ARMY WILL CROSS THE DELAWARE RIVER TONIGHT AT ELEVEN OCLOCK THE MEN WILL CARRY ONLY THEIR WEAPONS AND THREE DAYS OF RATIONS MARCH ROUTES AND OBJECTIVES WILL BE DISTRIBUTED TO COMMANDERS AT THE CROSSING | nomenclator | nomenclator | nomenclator | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 308 | 461 | cipher_museum | 2.0 | public | null | null |
cda-0016744 | CRYPT OGRAP HYREW ARDSP ATIEX CEANZ CAREF ULTHI NKING GRONS FELDX SESAZ IGITZ EQUEZ CEASX HEREX EATIN GKEYA MODEL CANCL ASSIX YPATZ ERNSX UTITC ANALS OBEWR ONGAZ | CRYPT OGRAP HYREW ARDSP ATIEX CEANZ CAREF ULTHI NKING GRONS FELDX SESAZ IGITZ EQUEZ CEASX HEREX EATIN GKEYA MODEL CANCL ASSIX YPATZ ERNSX UTITC ANALS OBEWR ONGAZ | CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG | commercial_code | commercial_code | null | {} | hard | en | 135 | 135 | 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-0006163 | PYNFF VPNYP VCURE FGRNP UJULZ BQREA FRPHE VGLZN GGREF | PYNFF VPNYP VCURE FGRNP UJULZ BQREA FRPHE VGLZN GGREF | CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS | rot13 | rot13 | null | {
"shift": 13
} | medium | en | 45 | 45 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
monoalphabetic-399 | IHMQRGB IPTHMN QSB OHEY PGY QSB OMPTB VSH YPMB QH PLQ | IHMQRGB IPTHMN QSB OHEY PGY QSB OMPTB VSH YPMB QH PLQ | FORTUNE FAVORS THE BOLD AND THE BRAVE WHO DARE TO ACT | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "POLYBIUS"
} | beginner | en | 43 | 53 | cipher_museum | 0.2 | public | null | null |
rail-fence-la-049 | SVSAEPRBLUIIPCMAAELM | SVSAEPRBLUIIPCMAAELM | SI VIS PACEM PARA BELLUM | rail_fence | rail_fence | transposition | {
"type": "shift",
"value": 2
} | intermediate | la | 20 | 20 | cipher_museum | 0.2 | public | null | null |
cda-0004672 | NSOL SSEM EERT HEAI FTOD HXXX LXXS HEWS OWHS TETE BH | NSOL SSEM EERT HEAI FTOD HXXX LXXS HEWS OWHS TETE BH | THE BEST LESSONS SHOW WHERE THE METHOD FAILS | double_transposition | double_transposition | null | {
"key1": "JUSTICE",
"key2": "PALACE"
} | medium | en | 42 | 42 | synthetic_educational | null | null | [
"key_length_search",
"anagram_recovery"
] | Double columnar transposition: apply columnar twice for stronger security. |
fialka-v2-0225 | NHIKFRVHZKBIYQSQHXQENQYXSFDGBKPXPEBJWVTEVAMQGWNRQMKSMZATAKRDSBHSSLKRCDRXD | NHIKFRVHZKBIYQSQHXQENQYXSFDGBKPXPEBJWVTEVAMQGWNRQMKSMZATAKRDSBHSSLKRCDRXD | ALEA IACTA EST ET CAESAR RUBICONE TRANSGRESSO BELLUM CIVILE INCIPIT PER TOTAM ROMANAM | fialka | fialka | machine | {
"type": "seed",
"value": "KREMLIN"
} | expert | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
hill-v2-0538 | DSFMGCOXAOYSHONETJ | DSFMGCOXAOYSHONETJ | NOVUS ORDO SECLORUM | hill | hill | polygraphic | {
"a": 11,
"b": 3,
"c": 2,
"d": 5
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
red-type-a-055 | YMOZOBYDHETVOFOSOYNYZUBLUXYCATUBYFUNOQBYIRYPHVEVEUCFRJYGQECD | YMOZOBYDHETVOFOSOYNYZUBLUXYCATUBYFUNOQBYIRYPHVEVEUCFRJYGQECD | EVERY SECRET HAS A KEEPER AND EVERY CODE HAS A BREAKER WHO SEEKS THE TRUTH | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "TOKYORED"
} | advanced | en | 60 | 60 | cipher_museum | 0.2 | public | null | null |
red-type-a-082 | IMYIQGOPTJETITWOFC | IMYIQGOPTJETITWOFC | AWAIT FURTHER ORDERS | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
caesar-vf-0040 | GUR URNIRAF QRPYNER GUR TYBEL BS TBQ QNL HAGB QNL HGGRERGU FCRRPU AVTUG HAGB AVTUG FUBJRGU XABJYRQTR | GUR URNIRAF QRPYNER GUR TYBEL BS TBQ QNL HAGB QNL HGGRERGU FCRRPU AVTUG HAGB AVTUG FUBJRGU XABJYRQTR | THE HEAVENS DECLARE THE GLORY OF GOD DAY UNTO DAY UTTERETH SPEECH NIGHT UNTO NIGHT SHOWETH KNOWLEDGE | caesar | caesar | substitution | {
"type": "shift",
"value": 13
} | beginner | en | 84 | 100 | cipher_museum | 2.0 | public | null | null |
polybius-024 | 44 42 45 43 44 33 34 34 33 15 | 44 42 45 43 44 33 34 34 33 15 | TRUST NO ONE | polybius | polybius | substitution | {
"type": "none",
"value": null
} | beginner | en | 20 | 29 | cipher_museum | 0.2 | public | null | null |
m209-v2-0145 | BPRMCAJXDICYZOTBZZ | BPRMCAJXDICYZOTBZZ | CONTACT HAS BEEN MADE | m209 | m209 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
fialka-v2-0001 | EPCHHHZVWWLD | EPCHHHZVWWLD | THE DIE IS CAST | fialka | fialka | machine | {
"type": "seed",
"value": "MOSCOW"
} | expert | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v3-0117 | LFUGALRLDURFPASTQBKOVVAVC | LFUGALRLDURFPASTQBKOVVAVC | THE CASTLE IS SURROUNDED | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 25 | 25 | cipher_museum | 2.0 | public | null | null |
polybius-v2-0032 | 15 35 31 45 42 24 12 45 43 45 33 45 32 | 15 35 31 45 42 24 12 45 43 45 33 45 32 | E PLURIBUS UNUM | polybius | polybius | substitution | {
"type": "none",
"value": null
} | beginner | en | 26 | 38 | cipher_museum | 2.0 | public | null | null |
morse-code-v3-0045 | ... - . .- -- / .--. --- .-- . .-. / - .-. .- -. ... ..-. --- .-. -- ... | ... - . .- -- / .--. --- .-- . .-. / - .-. .- -. ... ..-. --- .-. -- ... | STEAM POWER TRANSFORMS | morse_code | morse_code | encoding | {
"type": "none",
"value": null
} | beginner | en | 51 | 72 | cipher_museum | 2.0 | public | null | null |
rail-fence-v2-0550 | WCHWHIHTESEAHWORSETWEYNATITCNALSAAAMLIHLYEENTLBWMAEAEOSNMRSUDAOL | WCHWHIHTESEAHWORSETWEYNATITCNALSAAAMLIHLYEENTLBWMAEAEOSNMRSUDAOL | WHAT IS IN A NAME THAT WHICH WE CALL A ROSE BY ANY OTHER NAME WOULD SMELL AS SWEET | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 11
} | intermediate | en | 64 | 64 | cipher_museum | 2.0 | public | null | null |
enigma-v2-0143 | ENNIXJGPBLLDBUIBMID | ENNIXJGPBLLDBUIBMID | CODED MESSAGE FOLLOWS | enigma | enigma | machine | {
"type": "rotor_start",
"value": "DEF"
} | expert | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
cda-0008486 | AOCI JNTL KRZS QEOE FCAX MVHF LDAS HXRH ZPWW DZQN QWBV LMYM | AOCI JNTL KRZS QEOE FCAX MVHF LDAS HXRH ZPWW DZQN QWBV LMYM | AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER | trithemius | trithemius | null | {} | medium | en | 48 | 48 | synthetic_educational | null | null | [] | |
porta-171 | TLABNNZVSQDGFHSJPEZXMNMIVPFQMERDFPTTNJFGGRYEAJJREPMDRFEUZQRK | TLABNNZVSQDGFHSJPEZXMNMIVPFQMERDFPTTNJFGGRYEAJJREPMDRFEUZQRK | KNOWLEDGE IS POWER AND INFORMATION IS THE KEY TO VICTORY IN ANY CONFLICT | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "SECRET"
} | intermediate | en | 60 | 60 | cipher_museum | 0.2 | public | null | null |
adfgvx-v3-0193 | DFAVAXAXDFADAVADFVDVAXAFGVGXAFFDFDDVAXDVAAGXFVAGFDAFAFAAGDGAADFAXAGDXDVGAGDDAGAGAXAVGADXDGDXGDGGAVAVAVFAADDFDVFVAXAXDGFDAXADFGFDDDDXDXFAFFAAADVFAFGGXDGAADGFDAXGGFXAAA | DFAVAXAXDFADAVADFVDVAXAFGVGXAFFDFDDVAXDVAAGXFVAGFDAFAFAAGDGAADFAXAGDXDVGAGDDAGAGAXAVGADXDGDXGDGGAVAVAVFAADDFDVFVAXAXDGFDAXADFGFDDDDXDXFAFFAAADVFAFGGXDGAADGFDAXGGFXAAA | RSA ENCRYPTION RELIES ON THE MATHEMATICAL DIFFICULTY OF FACTORING THE PRODUCT OF TWO LARGE PRIMES | adfgvx | adfgvx | fractionation | {
"polybius": "LIBERTY",
"columnar": "FREEDOM"
} | advanced | en | 166 | 166 | cipher_museum | 2.0 | public | null | null |
cda-0011042 | NGONFU RAPBQRF OL ERIREFVAT GUR NYCUNORG N GENAFCNERAG GBBY FUBHYQ FUBJ VGF ERNFBAVAT CBYLNYCUNORGVP PVCUREF HFR ZHYGVCYR NYCUNORG FUVSGF | NGONFU RAPBQRF OL ERIREFVAT GUR NYCUNORG N GENAFCNERAG GBBY FUBHYQ FUBJ VGF ERNFBAVAT CBYLNYCUNORGVP PVCUREF HFR ZHYGVCYR NYCUNORG FUVSGF | ATBASH ENCODES BY REVERSING THE ALPHABET A TRANSPARENT TOOL SHOULD SHOW ITS REASONING POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 119 | 119 | synthetic_educational | null | null | [] | |
cda-0018442 | QOTED YSHED YCHOL SHEED YCHOR SHEDY CHEDA LOKAL CHOLD AIINY TAIIN CHOLD AIINR CHEOL | QOTED YSHED YCHOL SHEED YCHOR SHEDY CHEDA LOKAL CHOLD AIINY TAIIN CHOLD AIINR CHEOL | THE MESSAGE WAS HIDDEN BUT NOT SECURE PERHAPS | voynich_render | voynich_render | null | {} | medium | en | 70 | 70 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
double-transposition-v3-0305 | LTYHHDLTWRHANRAHULAERSGYEENITHODNEHDINOLTDTCLUENIIOISTYHBVAHDDCGHERDANEDLALSHOAHULTEOHSAYTRNIRTHAHTLTOEAWHOLDHTLLOLMNADOTTIEIASTNSHOLIHHIEWEWGTHWDHAMOERTOMITDS | LTYHHDLTWRHANRAHULAERSGYEENITHODNEHDINOLTDTCLUENIIOISTYHBVAHDDCGHERDANEDLALSHOAHULTEOHSAYTRNIRTHAHTLTOEAWHOLDHTLLOLMNADOTTIEIASTNSHOLIHHIEWEWGTHWDHAMOERTOMITDS | 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 | double_transposition | double_transposition | transposition | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 159 | 159 | cipher_museum | 2.0 | public | null | null |
cda-0004400 | TPSTU TANOS HSHDH WOEIT AEHTS IMLWG RSQER OPEDE CDSHP ANUAC POASE URNAB LHRRE YSYEG BEXUE TBWPC ITIIS WTX | TPSTU TANOS HSHDH WOEIT AEHTS IMLWG RSQER OPEDE CDSHP ANUAC POASE URNAB LHRRE YSYEG BEXUE TBWPC ITIIS WTX | TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS THE MESSAGE WAS HIDDEN BUT NOT SECURE | stager_route | stager_route | null | {
"cols": 11
} | hard | en | 88 | 88 | synthetic_educational | null | null | [
"column_count_search",
"route_pattern_search"
] | Route (Stager) cipher: write into rectangle, read via alternating column route. |
wheatstone-v2-0070 | MSJQHQHRNTURIIRURNFJNRQHREYNGOTQJIQHRESOQJAKTDDTOBSOQTEJURFXLHTFERNGJJN | MSJQHQHRNTURIIRURNFJNRQHREYNGOTQJIQHRESOQJAKTDDTOBSOQTEJURFXLHTFERNGJJN | QUOTH THE RAVEN NEVERMORE THE BIRD SAT ON THE BUST OF PALLAS JUST ABOVE MY CHAMBER DOOR | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "TELEGRAPHY"
} | advanced | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
cda-0016849 | FIEL DRIG HTEX TRAQ UOTA UPPE RENT ERNA VALC LAIM YIEL DALE RTNO RTHA FTER LINE SYIE LDSW IFTI SSUE SWIF TCOV ERAL ERTN OTES ROAD SEXT RAVA LUEE IGHT ABOV E | FIEL DRIG HTEX TRAQ UOTA UPPE RENT ERNA VALC LAIM YIEL DALE RTNO RTHA FTER LINE SYIE LDSW IFTI SSUE SWIF TCOV ERAL ERTN OTES ROAD SEXT RAVA LUEE IGHT ABOV E | FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES | 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. |
affine-v3-1197 | L UFYV SJQ XVQ WVDHS QJ MLDUQ ZFLE CJUS AFHK CJSVZ FZ QUV WJSUJBBV ILNUFIE QJJT UVFYX MLIV | L UFYV SJQ XVQ WVDHS QJ MLDUQ ZFLE CJUS AFHK CJSVZ FZ QUV WJSUJBBV ILNUFIE QJJT UVFYX MLIV | I HAVE NOT YET BEGUN TO FIGHT SAID JOHN PAUL JONES AS THE BONHOMME RICHARD TOOK HEAVY FIRE | affine | affine | substitution | {
"a": 17,
"b": 5
} | beginner | en | 73 | 90 | cipher_museum | 2.0 | public | null | null |
cda-0016165 | FAEIB MHEXP KJRCZ NOBWX UUMAK WWLRU VIVGW DDQIN CIHFQ KBPII AGYCF XMADU PBCWZ VVYUB LTWUB WBEJY HVGA | FAEIB MHEXP KJRCZ NOBWX UUMAK WWLRU VIVGW DDQIN CIHFQ KBPII AGYCF XMADU PBCWZ VVYUB LTWUB WBEJY HVGA | OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES | vernam | vernam | null | {} | hard | en | 84 | 84 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
geheimschreiber-v2-0355 | VZTLVDMEGEIOYXTUHDHRUQBYSEMWRPKWBNEDPYQWQOAQJILFHCULGHGUJGJMAMDUBCTQJEHGXYTIVMZL | VZTLVDMEGEIOYXTUHDHRUQBYSEMWRPKWBNEDPYQWQOAQJILFHCULGHGUJGJMAMDUBCTQJEHGXYTIVMZL | THE AMBASSADOR HAS RECEIVED OUR MOST URGENT DISPATCHES AND AWAITS INSTRUCTIONS FROM LONDON HQ | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "GOTHIC"
} | expert | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
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