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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
wallis-cipher-v3-0088 | 90 82 33 31 72 28 56 91 90 81 34 21 91 90 61 54 60 52 76 87 85 91 90 33 34 26 56 85 55 54 82 91 90 14 49 59 60 28 37 91 158 90 48 63 86 50 10 42 22 53 81 14 23 46 91 90 33 34 91 90 85 28 34 56 55 54 56 85 91 90 24 54 79 56 34 10 86 91 90 43 33 68 91 90 37 61 87 85 39 28 34 22 91 90 54 26 56 63 46 55 23 33 85 39 91 | 90 82 33 31 72 28 56 91 90 81 34 21 91 90 61 54 60 52 76 87 85 91 90 33 34 26 56 85 55 54 82 91 90 14 49 59 60 28 37 91 158 90 48 63 86 50 10 42 22 53 81 14 23 46 91 90 33 34 91 90 85 28 34 56 55 54 56 85 91 90 24 54 79 56 34 10 86 91 90 43 33 68 91 90 37 61 87 85 39 28 34 22 91 90 54 26 56 63 46 55 23 33 85 39 91 | DIFFIE AND HELLMAN INVENTED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX CHANGING EVERYTHING | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "OXFORD"
} | expert | en | 211 | 315 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v3-0955 | RBO WGSBOHCQR QTSSOODQ | RBO WGSBOHCQR QTSSOODQ | THE ALCHEMIST SUCCEEDS | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "WISDOM"
} | beginner | en | 20 | 22 | cipher_museum | 2.0 | public | null | null |
cda-0013322 | ATRAN SPARX NTTOX LSHOU LDSHO WITSZ EASON INGDZ | ATRAN SPARX NTTOX LSHOU LDSHO WITSZ EASON INGDZ | A TRANSPARENT TOOL SHOULD SHOW ITS REASONING | commercial_code | commercial_code | null | {} | medium | en | 40 | 40 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
alberti-disk-v3-0329 | YRHKQMRHIMGNIXJRHNWG | YRHKQMRHIMGNIXJRHNWG | THE KING DEMANDS FEALTY | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 10
} | expert | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
cda-0012935 | LKAII NCTAI INQOK EEDYC TAIIN SHEED YCHOL OKSHY YKCHE OLYKC HEOLY TAIIN OTAIN SHARA LYTED YOKED YSHEE DYSHA LOTAI N | LKAII NCTAI INQOK EEDYC TAIIN SHEED YCHOL OKSHY YKCHE OLYKC HEOLY TAIIN OTAIN SHARA LYTED YOKED YSHEE DYSHA LOTAI N | POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE | voynich_render | voynich_render | null | {} | hard | en | 96 | 96 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
cda-0012550 | VQVLGWUNVNBFKIPUSMQUTGWWHDVNMWYNLIYOVJSJEWTEEEYTGMFABDUHBCFBMUFVAHQYKNWAXWDKOCHABUPHUOJTGFZDQZUPWXDDFZEGHWFBFSJMSTYXCZCYYSFCATF | VQVLGWUNVNBFKIPUSMQUTGWWHDVNMWYNLIYOVJSJEWTEEEYTGMFABDUHBCFBMUFVAHQYKNWAXWDKOCHABUPHUOJTGFZDQZUPWXDDFZEGHWFBFSJMSTYXCZCYYSFCATF | A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | one_time_pad | one_time_pad | null | {} | hard | en | 127 | 127 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
vic-221 | 09208895890788090825895830086088518009208895785800825895688058308893828589008389908209088919082 | 09208895890788090825895830086088518009208895785800825895688058308893828589008389908209088919082 | EVERY SECRET HAS A KEEPER AND EVERY CODE HAS A BREAKER WHO SEEKS THE TRUTH | vic | vic | substitution | {
"type": "keyword",
"value": "ENIGMA"
} | advanced | en | 95 | 95 | cipher_museum | 0.2 | public | null | null |
cda-0017017 | ⟨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⟩ | ⟨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⟩ | SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER | babington | babington | null | {} | medium | en | 50 | 50 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
cda-0017570 | .... .... .. ... . ..... . .... . ..... .... .... . ..... . ... .... .... .. .... ..... . . ..... .... ... .... .... .... ..... . .... .. .... . ..... .... ... ... ..... . . .... .... .... .... . ..... .... .. ... ... .... ... . .. . ..... .. . ... .... .... .. . ..... ... .. . . . ..... | .... .... .. ... . ..... . .... . ..... .... .... . ..... . ... .... .... .. .... ..... . . ..... .... ... .... .... .... ..... . .... .. .... . ..... .... ... ... ..... . . .... .... .... .... . ..... .... .. ... ... .... ... . .. . ..... .. . ... .... .... .. . ..... ... .. . . . ..... | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING | tap_code | tap_code | null | {} | hard | en | 141 | 141 | 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-v2-0283 | EIVDIIVCNVII | EIVDIIVCNVII | VENI VIDI VICI | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "BATTLE"
} | intermediate | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v3-0391 | NAOTNLDAVGXPWTOKRPGSFJAOOVGBVIJZGZWAVGXVTGTIBWBNNQDNNLJQAAGTJPPGVKFBVKEQAYGHVKCTBWBF | NAOTNLDAVGXPWTOKRPGSFJAOOVGBVIJZGZWAVGXVTGTIBWBNNQDNNLJQAAGTJPPGVKFBVKEQAYGHVKCTBWBF | SIGNALS INTELLIGENCE OR SIGINT INVOLVES INTERCEPTION AND ANALYSIS OF ELECTRONIC COMMUNICATIONS | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "VENICE"
} | advanced | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
cda-0021534 | 23 24 31 31 13 24 35 23 15 42 45 43 15 43 31 24 33 15 11 42 11 31 22 15 12 42 11 44 34 15 33 13 42 54 35 44 12 31 34 13 25 43 34 21 31 15 44 44 15 42 43 | 23 24 31 31 13 24 35 23 15 42 45 43 15 43 31 24 33 15 11 42 11 31 22 15 12 42 11 44 34 15 33 13 42 54 35 44 12 31 34 13 25 43 34 21 31 15 44 44 15 42 43 | HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS | polybius | polybius | null | {} | medium | en | 51 | 51 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
nihilist-v3-0091 | 65 37 59 57 48 57 43 47 89 86 37 50 43 43 87 79 47 30 34 47 86 66 25 49 43 56 69 79 58 58 46 24 57 88 26 50 72 27 88 69 28 28 56 54 66 88 38 69 45 47 66 96 44 59 46 24 57 57 57 40 52 46 59 69 28 27 63 56 56 78 35 67 52 56 69 56 26 28 65 37 98 87 48 60 34 24 78 66 65 46 65 37 56 57 26 59 46 66 77 75 37 40 65 24 78 66 57... | 65 37 59 57 48 57 43 47 89 86 37 50 43 43 87 79 47 30 34 47 86 66 25 49 43 56 69 79 58 58 46 24 57 88 26 50 72 27 88 69 28 28 56 54 66 88 38 69 45 47 66 96 44 59 46 24 57 57 57 40 52 46 59 69 28 27 63 56 56 78 35 67 52 56 69 56 26 28 65 37 98 87 48 60 34 24 78 66 65 46 65 37 56 57 26 59 46 66 77 75 37 40 65 24 78 66 57... | 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 | nihilist | nihilist | fractionation | {
"polybius": "PALACE",
"keyword": "BATTLE"
} | advanced | en | 318 | 476 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-003 | 125550242852506280422522 | 125550242852506280422522 | THE EAGLE HAS LANDED | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "ATONESIRE"
} | advanced | en | 24 | 24 | cipher_museum | 0.2 | public | null | null |
cda-0002812 | TSTSHHEIECDMEDURESSNEXBAGUXXTEWNXXOA | TSTSHHEIECDMEDURESSNEXBAGUXXTEWNXXOA | THE MESSAGE WAS HIDDEN BUT NOT SECURE | stager_route | stager_route | null | {
"cols": 12
} | medium | en | 36 | 36 | synthetic_educational | null | null | [
"column_count_search",
"route_pattern_search"
] | Route (Stager) cipher: write into rectangle, read via alternating column route. |
cda-0020491 | OKALR CHEOL ORORC HEDYK AIIIN SHALR CHEOL QOKEE DYOTO LYKCH EOLSH ARALO TEDYS HALOT OLCHO LOTOL OTEDY LKAII NOKAL LKAII NOKAL ORORD AIINR CHEOL YTAII NCHOR AIIIN QOKEE DYYTA IINKA IIINQ OKALO TAIIN OTEDY DALCH ORYKC HEOLQ OTEDY OKEDY LKAII N | OKALR CHEOL ORORC HEDYK AIIIN SHALR CHEOL QOKEE DYOTO LYKCH EOLSH ARALO TEDYS HALOT OLCHO LOTOL OTEDY LKAII NOKAL LKAII NOKAL ORORD AIINR CHEOL YTAII NCHOR AIIIN QOKEE DYYTA IINKA IIINQ OKALO TAIIN OTEDY DALCH ORYKC HEOLQ OTEDY OKEDY LKAII N | HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS ATBASH ENCODES BY REVERSING THE ALPHABET THE VIGENERE CIPHER USES A REPEATING KEYWORD | voynich_render | voynich_render | null | {} | hard | en | 201 | 201 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
purple-v3-0073 | KBMKCHPJXQQRZNUERLXODWTPGWJTHJZKHUIYQYUEFXJGMTSARLRAUWVROZBUNKKFVIUCAXEZKEOGYP | KBMKCHPJXQQRZNUERLXODWTPGWJTHJZKHUIYQYUEFXJGMTSARLRAUWVROZBUNKKFVIUCAXEZKEOGYP | BLESSED ARE THE MEEK FOR THEY SHALL INHERIT THE EARTH AND THE PEACEMAKERS SHALL BE CALLED SONS | purple | purple | machine | {
"type": "seed",
"value": "TOKYO"
} | expert | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
cda-0020160 | BEAUF ORTIS THERE CIPRO CALOF VIGEN EREAX DDECR YPTSI TSELF ASTRO NGCLX IMNEX DSSTX ONGEV IDENC EDECB | BEAUF ORTIS THERE CIPRO CALOF VIGEN EREAX DDECR YPTSI TSELF ASTRO NGCLX IMNEX DSSTX ONGEV IDENC EDECB | BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF A STRONG CLAIM NEEDS STRONG EVIDENCE | 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-0018138 | DZEH / GAH / GAH / A-KHA / GAH / MOASI / A-KHA / GAH / GAH / DZEH / MOASI / THAN-ZIE / TKIN / A-KHA / TSAH / WOL-LA-CHEE / TSAH / BE / BE / DZEH / THAN-ZIE / DZEH / MOASI / THAN-ZIE / TKIN / A-KHA / TSAH / WOL-LA... | DZEH / GAH / GAH / A-KHA / GAH / MOASI / A-KHA / GAH / GAH / DZEH / MOASI / THAN-ZIE / TKIN / A-KHA / TSAH / WOL-LA-CHEE / TSAH / BE / BE / DZEH / THAN-ZIE / DZEH / MOASI / THAN-ZIE / TKIN / A-KHA / TSAH / WOL-LA... | ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF FAIL CLOSED IS A POSTURE NOT A SLOGAN | navajo_code | navajo_code | null | {} | hard | en | 189 | 189 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
nihilist-v2-0321 | 38 55 68 25 44 57 77 35 37 87 53 56 67 53 25 57 96 43 44 36 54 36 25 56 33 45 68 74 45 25 58 26 45 46 55 44 37 70 33 26 57 83 45 59 66 43 25 58 64 38 25 90 43 38 37 64 38 68 97 33 45 67 46 58 46 76 36 56 37 44 45 39 56 52 67 68 74 38 46 | 38 55 68 25 44 57 77 35 37 87 53 56 67 53 25 57 96 43 44 36 54 36 25 56 33 45 68 74 45 25 58 26 45 46 55 44 37 70 33 26 57 83 45 59 66 43 25 58 64 38 25 90 43 38 37 64 38 68 97 33 45 67 46 58 46 76 36 56 37 44 45 39 56 52 67 68 74 38 46 | CLAUDE SHANNON PROVED THAT THE ONE TIME PAD ACHIEVES PERFECT SECRECY WHEN USED CORRECTLY ONCE | nihilist | nihilist | fractionation | {
"polybius": "TRIUMPH",
"keyword": "JUSTICE"
} | advanced | en | 158 | 236 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v2-0463 | XJWIMWFUQSFSDQKAKWPHDGALKLZWXSULLZSLUWJLSAFDWLLWJKSHHWSJXSJEGJWGXLWFAFWFYDAKZLWPL | XJWIMWFUQSFSDQKAKWPHDGALKLZWXSULLZSLUWJLSAFDWLLWJKSHHWSJXSJEGJWGXLWFAFWFYDAKZLWPL | FREQUENCY ANALYSIS EXPLOITS THE FACT THAT CERTAIN LETTERS APPEAR FAR MORE OFTEN IN ENGLISH TEXT | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "DYNASTY"
} | beginner | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
cda-0009487 | AOCIJ NTLKR ZSQEO EFCAX MVHFL DASHX RHZPW WDZQN QWBVL MYMAK RQOQA PIFYB ZNCFZ PSGJR AGNTE KYCIT VUMGA AQXXN AYIBD RJMLV JPNNS JVLSS XLIMC NAYIB DJAGE ZULPC ESQSI SYVCA MPFBC AIRDE IREKB DPFPG ISZCM ASQUP OIYFF | AOCIJ NTLKR ZSQEO EFCAX MVHFL DASHX RHZPW WDZQN QWBVL MYMAK RQOQA PIFYB ZNCFZ PSGJR AGNTE KYCIT VUMGA AQXXN AYIBD RJMLV JPNNS JVLSS XLIMC NAYIB DJAGE ZULPC ESQSI SYVCA MPFBC AIRDE IREKB DPFPG ISZCM ASQUP OIYFF | AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION | trithemius | trithemius | null | {} | hard | en | 175 | 175 | synthetic_educational | null | null | [] | |
cda-0019626 | 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 20 9 14 25 | 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 20 9 14 25 | SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY | aeneas_tacticus | aeneas_tacticus | null | {} | medium | en | 41 | 41 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
lorenz-v3-0061 | THEBATTLEOFBRITAINRAGEDIJTHESKIETABOVAENGLANDFORFOURMKNTHSINNINETEENFORTY | THEBATTLEOFBRITAINRAGEDIJTHESKIETABOVAENGLANDFORFOURMKNTHSINNINETEENFORTY | THE BATTLE OF BRITAIN RAGED IN THE SKIES ABOVE ENGLAND FOR FOUR MONTHS IN NINETEEN FORTY | lorenz | lorenz | machine | {
"type": "seed",
"value": "TUNNY"
} | expert | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
cda-0021707 | THEA XCHI TECT URES HOUL DMAK EMIS UZEH ARDE RTHE INDE XOFC OINC IDEN CEIX AUSE FULC LZEX DZE | THEA XCHI TECT URES HOUL DMAK EMIS UZEH ARDE RTHE INDE XOFC OINC IDEN CEIX AUSE FULC LZEX DZE | THE ARCHITECTURE SHOULD MAKE MISUSE HARDER THE INDEX OF COINCIDENCE IS A USEFUL CLUE | commercial_code | commercial_code | null | {} | medium | en | 75 | 75 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
alberti-disk-v2-1005 | MPRKEGJVGOFUNBUGHPGWKMFTGSUHZBSICTITBQHZXJDSLQPVIUIWOEERVTUGNFFQAHUVLNOAXRKKFYYFTPUCUIYAKZWCFLWPSAASUIMZRJBPODVKOUGAMEPYNOHYRACHICZHDZCBTKYIUHHFVHWKVDBQVRIIEVJPVOM | MPRKEGJVGOFUNBUGHPGWKMFTGSUHZBSICTITBQHZXJDSLQPVIUIWOEERVTUGNFFQAHUVLNOAXRKKFYYFTPUCUIYAKZWCFLWPSAASUIMZRJBPODVKOUGAMEPYNOHYRACHICZHDZCBTKYIUHHFVHWKVDBQVRIIEVJPVOM | 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 | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 17
} | expert | en | 163 | 163 | cipher_museum | 2.0 | public | null | null |
nomenclator-v3-0036 | 07 18 01 22 09 20 25 05 24 16 12 01 09 14 19 01 12 12 | 07 18 01 22 09 20 25 05 24 16 12 01 09 14 19 01 12 12 | GRAVITY EXPLAINS ALL | nomenclator | nomenclator | nomenclator | {
"type": "none",
"value": null
} | expert | en | 36 | 53 | cipher_museum | 2.0 | public | null | null |
cda-0020938 | 80 69 59 66 82 52 50 65 36 82 80 61 80 82 68 11 68 25 80 50 11 50 29 68 65 80 82 61 52 80 50 20 82 11 25 82 69 77 82 66 80 50 52 65 68 66 66 82 80 29 66 36 82 82 29 50 25 77 68 77 68 52 36 50 29 82 59 61 82 11 80 69 66 69 80 61 66 69 52 80 82 68 66 82 68 65 69 57 43 68 57 65 36 68 20 82 66 50 52 52 50 65 36 82 80 66 36... | 80 69 59 66 82 52 50 65 36 82 80 61 80 82 68 11 68 25 80 50 11 50 29 68 65 80 82 61 52 80 50 20 82 11 25 82 69 77 82 66 80 50 52 65 68 66 66 82 80 29 66 36 82 82 29 50 25 77 68 77 68 52 36 50 29 82 59 61 82 11 80 69 66 69 80 61 66 69 52 80 82 68 66 82 68 65 69 57 43 68 57 65 36 68 20 82 66 50 52 52 50 65 36 82 80 66 36... | ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER | wallis_cipher | wallis_cipher | null | {} | hard | en | 198 | 198 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
cda-0006125 | PPNBEQVOIKOEUP QXFYWKM POB KTLUKSPJ GSXQKMQG GWYWLL | PPNBEQVOIKOEUP QXFYWKM POB KTLUKSPJ GSXQKMQG GWYWLL | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS | trithemius | trithemius | null | {} | medium | en | 46 | 46 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
four-square-v2-0245 | LTNAURIISNHQUC | LTNAURIISNHQUC | TARGET ACQUIRED | four_square | four_square | polygraphic | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
kryptos-v2-0193 | SKWRYNGTVFSSTITFPVMVCUMPLOVJYHIXDMUREAXYMPUUKSRUCMAFXWLZXGHJVTSOMOQKVAPLTXQ | SKWRYNGTVFSSTITFPVMVCUMPLOVJYHIXDMUREAXYMPUUKSRUCMAFXWLZXGHJVTSOMOQKVAPLTXQ | IN THE BEGINNING GOD CREATED THE HEAVEN AND THE EARTH AND DARKNESS WAS UPON THE FACE OF DEEP | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "LANGLEY"
} | advanced | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
autokey-188 | TIDHJAZWELDB | TIDHJAZWELDB | HOLD POSITION | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "MUSEUM"
} | intermediate | en | 12 | 12 | cipher_museum | 0.2 | public | null | null |
cda-0009467 | BCRAF BHEPR GBBYF NYYBJ VAQRC RAQRA GIREV SVPNG VBASN VYPYB FRQVF NCBFG HERAB GNFYB TNA | BCRAF BHEPR GBBYF NYYBJ VAQRC RAQRA GIREV SVPNG VBASN VYPYB FRQVF NCBFG HERAB GNFYB TNA | OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION FAIL CLOSED IS A POSTURE NOT A SLOGAN | rot13 | rot13 | null | {
"shift": 13
} | medium | en | 73 | 73 | synthetic_educational | null | null | [] | |
joseon-yeokhak-v3-0121 | HVSYWBURSAOBRGTSOZHM | HVSYWBURSAOBRGTSOZHM | THE KING DEMANDS FEALTY | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "JOSEON"
} | beginner | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-v2-0211 | 248237172234217694907651523757003165626232492166269621238691402366238597070239824982938233246234142342501526623756 | 248237172234217694907651523757003165626232492166269621238691402366238597070239824982938233246234142342501526623756 | FREQUENCY ANALYSIS EXPLOITS THE FACT THAT CERTAIN LETTERS APPEAR FAR MORE OFTEN IN ENGLISH TEXT | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "LIONSTRACE"
} | advanced | en | 114 | 114 | cipher_museum | 2.0 | public | null | null |
chaocipher-233 | UNBWHIUQJFTBDEMOQGKFOPKACYOOSLJXVJJXTSPVHLYJRGTSNDSVWTJPTJGS | UNBWHIUQJFTBDEMOQGKFOPKACYOOSLJXVJJXTSPVHLYJRGTSNDSVWTJPTJGS | LET JUSTICE BE DONE THOUGH THE HEAVENS FALL AND THE STARS GO DARK FOREVER | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 60 | 60 | cipher_museum | 0.2 | public | null | null |
four-square-v3-0446 | QDSTLADAFDKGBERDRQEUNMRDFOTRTKOAWLALCSBLQDOTKBZCQPOABLRQDFKUIMHLRQNOTRDSCBQX | QDSTLADAFDKGBERDRQEUNMRDFOTRTKOAWLALCSBLQDOTKBZCQPOABLRQDFKUIMHLRQNOTRDSCBQX | THE SPEED OF LIGHT IS THE ULTIMATE SPEED LIMIT IN THE UNIVERSE EINSTEIN DEMONSTRATED THIS | four_square | four_square | polygraphic | {
"key1": "WISDOM",
"key2": "COURAGE"
} | advanced | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
cda-0020075 | 5.5.4 11.3.6 2.4.4 18.1.9 14.6.1 8.2.7 12.2.1 16.3.1 8.5.6 2.3.10 15.3.6 12.6.2 9.3.1 20.5.6 13.6.3 19.4.10 2.3.1 1.1.3 12.3.3 1.5.7 18.2.10 9.5.6 1.6.2 20.6.6 5.2.10 20.5.9 2.1.10 2.5.8 8.3.6 3.4.8 14.6.9 3.6.3 3.1.2 1.6.3 17.6.1 15.5.9 9.1.9 13.1.4 11.5.9 12.3.1 17.6.2 14.2.4 19.6.7 11.6.1 14.6.2 2.1.3 14.3.6 1.1.7 7... | 5.5.4 11.3.6 2.4.4 18.1.9 14.6.1 8.2.7 12.2.1 16.3.1 8.5.6 2.3.10 15.3.6 12.6.2 9.3.1 20.5.6 13.6.3 19.4.10 2.3.1 1.1.3 12.3.3 1.5.7 18.2.10 9.5.6 1.6.2 20.6.6 5.2.10 20.5.9 2.1.10 2.5.8 8.3.6 3.4.8 14.6.9 3.6.3 3.1.2 1.6.3 17.6.1 15.5.9 9.1.9 13.1.4 11.5.9 12.3.1 17.6.2 14.2.4 19.6.7 11.6.1 14.6.2 2.1.3 14.3.6 1.1.7 7... | DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX HONESTLY | arnold_andre | arnold_andre | null | {} | medium | en | 75 | 75 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
diana-v2-0086 | YTJWEZJIDYLNZHIYROZJJRARYWKOABXWAEAZYMKCLNAOFTAYKWDCGGNNHNXDMASYYNEWWCCJCTJPUNT | YTJWEZJIDYLNZHIYROZJJRARYWKOABXWAEAZYMKCLNAOFTAYKWDCGGNNHNXDMASYYNEWWCCJCTJPUNT | THE KASISKI TEST FINDS REPEATED SEQUENCES TO DETERMINE THE KEY LENGTH OF A VIGENERE CIPHER KEY | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "RANGER"
} | intermediate | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
cda-0002171 | IYEZIJMSITWGGDWZGKJZWYSPDLQVXAVHREBSGIWIMOEFEMWWUMNXWWSQYEIQQXFQVBSLAFKWELBCLBZXJKXBKGJXMMUEWBIMEGGMQWYCTIJGDOVILWOYNHKVWVLWHJIGADBLZTVGCHJIGADBUQIPSEUZTHVISEKECVTGKVDABMLFMPANIGNBLOUAHV | IYEZIJMSITWGGDWZGKJZWYSPDLQVXAVHREBSGIWIMOEFEMWWUMNXWWSQYEIQQXFQVBSLAFKWELBCLBZXJKXBKGJXMMUEWBIMEGGMQWYCTIJGDOVILWOYNHKVWVLWHJIGADBLZTVGCHJIGADBUQIPSEUZTHVISEKECVTGKVDABMLFMPANIGNBLOUAHV | THE BEST LESSONS SHOW WHERE THE METHOD FAILS FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION | autokey | autokey | null | {
"primer": "PRAYER"
} | hard | en | 186 | 186 | synthetic_educational | null | null | [
"running_key_analysis",
"index_of_coincidence"
] | Autokey: Vigenère where the plaintext extends the key — harder to Kasiski-attack. |
kryptos-203 | GPHHKQVTCXVBN | GPHHKQVTCXVBN | THE KING IS DEAD | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 13 | 13 | cipher_museum | 0.2 | public | null | null |
bacon-cipher-v2-0007 | BAAAB ABAAA AABBA ABBAA AAAAA ABABA AABAB ABAAA BAAAA AABAA BAAAB ABABA ABAAA BAABA | BAAAB ABAAA AABBA ABBAA AAAAA ABABA AABAB ABAAA BAAAA AABAA BAAAB ABABA ABAAA BAABA | SIGNAL FIRES LIT | bacon_cipher | bacon_cipher | steganography | {
"type": "none",
"value": null
} | beginner | en | 70 | 83 | cipher_museum | 2.0 | public | null | null |
cda-0002181 | ENGOOMIAHOWTUNHUTBXESDPSLUASLHLXDPANSURSETAOAERL | ENGOOMIAHOWTUNHUTBXESDPSLUASLHLXDPANSURSETAOAERL | HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | double_transposition | double_transposition | null | {
"key1": "CIPHER",
"key2": "DRAGON"
} | medium | en | 48 | 48 | synthetic_educational | null | null | [
"key_length_search",
"anagram_recovery"
] | Double columnar transposition: apply columnar twice for stronger security. |
rail-fence-238 | WHYRAYLOFRLTEOLYLNHTEEEDIHTRELTLRDOATEODHNSEFRDETELIERRRERNWSEDAOGYOREHHRNELSRTOAHHWTETEEOAOKROVOOTEOGTEITDAFLTEHWNTADHRHFTOEDHFHSSUHEDTE | WHYRAYLOFRLTEOLYLNHTEEEDIHTRELTLRDOATEODHNSEFRDETELIERRRERNWSEDAOGYOREHHRNELSRTOAHHWTETEEOAOKROVOOTEOGTEITDAFLTEHWNTADHRHFTOEDHFHSSUHEDTE | WHETHER THEREFORE YE EAT OR DRINK OR WHATSOEVER YE DO DO ALL TO THE GLORY OF GOD FOR THE EARTH IS THE LORDS AND THE FULLNESS THEREOF THE WORLD AND THEY THAT DWELL THEREIN | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 5
} | intermediate | en | 137 | 137 | cipher_museum | 0.2 | public | null | null |
enigma-050 | OPCGERMSETVXJCWOYIPFGZXAOKYFAOATSSZJZNXTDNRQGZXCTLXHPWN | OPCGERMSETVXJCWOYIPFGZXAOKYFAOATSSZJZNXTDNRQGZXCTLXHPWN | THE ART OF WAR IS OF VITAL IMPORTANCE TO THE STATE IT IS LIFE OR DEATH | enigma | enigma | machine | {
"type": "rotor_start",
"value": "AAA"
} | expert | en | 55 | 55 | cipher_museum | 0.2 | public | null | null |
cda-0007830 | MKABZ VIDYW JZWTL OWALZ MMYAN QWLBM QNZCM VJRYB DMXFM | MKABZ VIDYW JZWTL OWALZ MMYAN QWLBM QNZCM VJRYB DMXFM | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS | beaufort | beaufort | null | {
"key": "FREEDOM"
} | medium | en | 45 | 45 | synthetic_educational | null | null | [] | |
kl7-v3-0086 | DQVGDARPPJPLIBGFPFYWXMDBAMHSGYWQKYLSRPHWUUFRCPRWEHDVUOTPJJIZQJIWQSBJJXVFCWNPSRP | DQVGDARPPJPLIBGFPFYWXMDBAMHSGYWQKYLSRPHWUUFRCPRWEHDVUOTPJJIZQJIWQSBJJXVFCWNPSRP | ALL PERSONS BORN OR NATURALIZED IN THE UNITED STATES ARE CITIZENS SUBJECT TO EQUAL PROTECTION | kl7 | kl7 | machine | {
"type": "seed",
"value": "NATO"
} | expert | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
kryptos-051 | KQAKUJJGFLCADPEYCVHQZFSPUECUOQLCBNLKFTACRUCOATSQZAQTFCXMLJEA | KQAKUJJGFLCADPEYCVHQZFSPUECUOQLCBNLKFTACRUCOATSQZAQTFCXMLJEA | KNOWLEDGE IS POWER AND INFORMATION IS THE KEY TO VICTORY IN ANY CONFLICT | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "KRYPTOS"
} | advanced | en | 60 | 60 | cipher_museum | 0.2 | public | null | null |
m209-v3-0381 | ZDMETRQELANIZAMYEKNNAZTALYIOSIZLXKQLAWPDMLMCSLXSZCKUQPPJYOJDLKMPDPMOBXBOQPXVCMUPY | ZDMETRQELANIZAMYEKNNAZTALYIOSIZLXKQLAWPDMLMCSLXSZCKUQPPJYOJDLKMPDPMOBXBOQPXVCMUPY | DARWIN OBSERVED THAT SPECIES EVOLVE THROUGH NATURAL SELECTION OVER VAST SPANS OF GEOLOGIC TIME | m209 | m209 | machine | {
"type": "seed",
"value": "VICTORY"
} | expert | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
cda-0021695 | AABBB BAABB ABABB AAAAA ABBAA BAAAA AABAA AAAAA AAABB AAAAA AAAAB ABABA AABAA ABBAB BAABB BAABA ABBBA BAABB BAABA BAAAB AABBB ABBAB BAABB ABABA AAABB BAAAB AABBB ABBAB BABAA AAAAA ABABA ABABA BAAAA AABAA AAAAA BAAAB ABBAB ABBAA ABAAA ABBAA AABBA BAAAB BAABA AABAA ABBBA BAAAB AABAA ABBAA BAABA BAAAA ABBAB ABBBA BABBA AB... | AABBB BAABB ABABB AAAAA ABBAA BAAAA AABAA AAAAA AAABB AAAAA AAAAB ABABA AABAA ABBAB BAABB BAABA ABBBA BAABB BAABA BAAAB AABBB ABBAB BAABB ABABA AAABB BAAAB AABBB ABBAB BABAA AAAAA ABABA ABABA BAAAA AABAA AAAAA BAAAB ABBAB ABBAA ABAAA ABBAA AABBA BAAAB BAABA AABAA ABBBA BAAAB AABAA ABBAA BAABA BAAAA ABBAB ABBBA BABBA AB... | HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | bacon_cipher | bacon_cipher | null | {} | hard | en | 435 | 435 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
columnar-transposition-la-021 | SSAEOUUSPQNTLOUUMAURNPES | SSAEOUUSPQNTLOUUMAURNPES | SENATUS POPULUSQUE ROMANUS | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "KEYWORD"
} | intermediate | la | 24 | 24 | cipher_museum | 0.2 | public | null | null |
fractionated-morse-052 | UFJRSEAWABBABBFDQPBPUAIHQBUTFEXRAQKINVAITRQJBPUGWKUTFEPFOQUNBIOBFNQVFL | UFJRSEAWABBABBFDQPBPUAIHQBUTFEXRAQKINVAITRQJBPUGWKUTFEPFOQUNBIOBFNQVFL | IN THE BEGINNING WAS THE WORD AND THE WORD WAS WITH GOD AND FULL OF GRACE | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "ROUNDTABLE"
} | advanced | en | 70 | 70 | cipher_museum | 0.2 | public | null | null |
wheatstone-v3-0165 | LTTEAOLTTIAMBJFDWLYLJARFNLKDFVAOMJOARSDASTRMYADBMURGLPLKASANLRRFARSFKJFKUTAS | LTTEAOLTTIAMBJFDWLYLJARFNLKDFVAOMJOARSDASTRMYADBMURGLPLKASANLRRFARSFKJFKUTAS | AT THE BATTLE OF MIDWAY AMERICAN DIVE BOMBERS DESTROYED FOUR JAPANESE CARRIERS IN MINUTES | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "LONDON"
} | advanced | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-019 | FHQFNPPBIFAFRXTCSF | FHQFNPPBIFAFRXTCSF | NO PRISONERS TAKEN | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "ROUNDTABLE"
} | advanced | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
typex-006 | OPQHNJZJVDJFRZJZ | OPQHNJZJVDJFRZJZ | PROCEED AS PLANNED | typex | typex | machine | {
"type": "keyword",
"value": "TYPEX"
} | expert | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
double-transposition-v3-0297 | CTHARISCEDTMFICIEFPTTWFAATSOCSLYGMARNELFCILUEPYNTINROFMRUIEHETOPTGDRAETROAIONRHOLEO | CTHARISCEDTMFICIEFPTTWFAATSOCSLYGMARNELFCILUEPYNTINROFMRUIEHETOPTGDRAETROAIONRHOLEO | RSA ENCRYPTION RELIES ON THE MATHEMATICAL DIFFICULTY OF FACTORING THE PRODUCT OF TWO LARGE PRIMES | double_transposition | double_transposition | transposition | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 83 | 83 | cipher_museum | 2.0 | public | null | null |
four-square-v2-0583 | RDLONUTOWOSRCBKCTOHKFLHLEORIOOYSEUASFATOKQNUKUWZITYLLUBSVPCSBLMODILDCSTUIMRQGLDTMURSEUYLQMBEWVWAGVDVNUKUYEFHWHUOXSOOSHQMTPKVEOLUNORDHLENFHFDCHFLBSBKSTQX | RDLONUTOWOSRCBKCTOHKFLHLEORIOOYSEUASFATOKQNUKUWZITYLLUBSVPCSBLMODILDCSTUIMRQGLDTMURSEUYLQMBEWVWAGVDVNUKUYEFHWHUOXSOOSHQMTPKVEOLUNORDHLENFHFDCHFLBSBKSTQX | 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 | four_square | four_square | polygraphic | {
"key1": "WISDOM",
"key2": "COURAGE"
} | advanced | en | 152 | 152 | cipher_museum | 2.0 | public | null | null |
four-square-v2-0525 | YEQDFOKGOURLUOROKKLUYEQDSBINCSUDGSWHFHDTQTDEKUTMQDSMDNCLHQYIQMSSSHSDWAHV | YEQDFOKGOURLUOROKKLUYEQDSBINCSUDGSWHFHDTQTDEKUTMQDSMDNCLHQYIQMSSSHSDWAHV | WITH MALICE TOWARD NONE WITH CHARITY FOR ALL LET US BIND UP THE NATIONS WOUNDS AND HEAL | four_square | four_square | polygraphic | {
"key1": "WISDOM",
"key2": "COURAGE"
} | advanced | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
double-transposition-v3-0338 | REESBERTIDAREURHUE | REESBERTIDAREURHUE | TREASURE BURIED HERE | double_transposition | double_transposition | transposition | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
adfgvx-v3-0111 | AXDVDAAXDADAFFGXDXAAVFFDGFVF | AXDVDAAXDADAFFGXDXAAVFFDGFVF | MARCH TO VICTORY | adfgvx | adfgvx | fractionation | {
"polybius": "LIBERTY",
"columnar": "FREEDOM"
} | advanced | en | 28 | 28 | cipher_museum | 2.0 | public | null | null |
cda-0002048 | ATVU SSMJ TJSX ZRSS IJLK IICB THDF PFIP KYKT RZRS GEHZ FVCK HBQZ YTVK IXEZ BNWX GFHQ UJWV OMAB TDNJ HHRJ SFSW YHEN ZVEI AMBH PTMR QVCU IHOW PNBP ZPFN FKKW CBNX NGSX KWLY CVXX VJNV IHQC HAUW AQQC IHTD TMGU LCBT SEOE XWJX KPAK AHET GATT YLAR WAXR QXFY WKM | ATVU SSMJ TJSX ZRSS IJLK IICB THDF PFIP KYKT RZRS GEHZ FVCK HBQZ YTVK IXEZ BNWX GFHQ UJWV OMAB TDNJ HHRJ SFSW YHEN ZVEI AMBH PTMR QVCU IHOW PNBP ZPFN FKKW CBNX NGSX KWLY CVXX VJNV IHQC HAUW AQQC IHTD TMGU LCBT SEOE XWJX KPAK AHET GATT YLAR WAXR QXFY WKM | A STRONG CLAIM NEEDS STRONG EVIDENCE KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS | trithemius | trithemius | null | {} | hard | en | 203 | 203 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
jefferson-disk-v3-0198 | HYRIICADIZYIJZJOG | HYRIICADIZYIJZJOG | ARCHERS TO THE WALLS | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "1,3,5,2,4,6"
} | expert | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
double-transposition-v3-0031 | IONYOSMLETSSFEARBBLES | IONYOSMLETSSFEARBBLES | SONS OF LIBERTY ASSEMBLE | double_transposition | double_transposition | transposition | {
"key1": "PALACE",
"key2": "BATTLE"
} | advanced | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-v2-0120 | 4HPFWJMAHEPXPLERMFEEHOHGBMHUPMNAYIMJHSYHCXBF2ENVBD7CKJJAYOPAAODNRAHTMETAYAJTJ4BRLPNVBXDMCXLLTAOA5SLGGWLLPCRAMAYAPK4HPRNKHNYFTA7UPNRPXTMEOA5SLGGWIA6EOAPNDNEECD2EHA6TFPF45IJAJGBNJENX5 | 4HPFWJMAHEPXPLERMFEEHOHGBMHUPMNAYIMJHSYHCXBF2ENVBD7CKJJAYOPAAODNRAHTMETAYAJTJ4BRLPNVBXDMCXLLTAOA5SLGGWLLPCRAMAYAPK4HPRNKHNYFTA7UPNRPXTMEOA5SLGGWIA6EOAPNDNEECD2EHA6TFPF45IJAJGBNJENX5 | THE FUNDAMENTAL PROBLEM OF COMMUNICATION IS THAT OF REPRODUCING AT ONE POINT EITHER EXACTLY OR APPROXIMATELY A MESSAGE SELECTED AT ANOTHER POINT FREQUENTLY THE MESSAGES HAVE MEANING AND REFER TO PHYSICAL CONCEPTS | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "PALACE"
} | expert | en | 181 | 181 | cipher_museum | 2.0 | public | null | null |
red-type-a-v2-0457 | WAXOPOESRZADPOJYQHRELAFDIYGOICMIHXOXUXARSISFYDDNKIQAGTYZJYLOPNYIKFROMUNNPAZHJOX | WAXOPOESRZADPOJYQHRELAFDIYGOICMIHXOXUXARSISFYDDNKIQAGTYZJYLOPNYIKFROMUNNPAZHJOX | NATURE IS WRITTEN IN THE LANGUAGE OF MATHEMATICS AND ITS CHARACTERS ARE TRIANGLES AND CIRCLES | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "MIKADO"
} | advanced | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-v3-0106 | JZPWDA7PZVFZRWGFPS | JZPWDA7PZVFZRWGFPS | CROSS THE RUBICON NOW | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "LIBERTY"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
cda-0016304 | HWIR FWAD CQTQ VTFE FDSZ ZBWS GWGR GEXV XVIU WNYT TDU | HWIR FWAD CQTQ VTFE FDSZ ZBWS GWGR GEXV XVIU WNYT TDU | OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION | running_key | running_key | null | {} | medium | en | 43 | 43 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
straddling-checkerboard-v2-0101 | 2217240925282032272211620282810832216741284741331004140777209257247772322467247712162216288925777202029291325284 | 2217240925282032272211620282810832216741284741331004140777209257247772322467247712162216288925777202029291325284 | DEUTSCHLAND UBER ALLES IN DER WELT WENN ES STETS ZU SCHUTZ UND TRUTZE BRÜDERLICH ZUSAMMENHÄLT | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "SENTORISCA"
} | advanced | en | 112 | 112 | cipher_museum | 2.0 | public | null | null |
wallis-cipher-v2-0126 | 90 45 56 91 90 55 61 54 91 90 14 56 42 50 60 54 91 90 89 31 91 90 10 23 56 91 90 49 34 33 55 54 82 91 90 24 10 81 55 56 43 91 90 28 85 91 90 42 63 21 54 53 91 90 10 89 91 90 72 42 63 76 91 90 87 91 90 40 89 53 56 91 90 14 54 63 31 56 37 55 91 90 25 34 33 42 85 91 90 54 24 10 81 59 52 28 43 61 91 90 12 49 24 55 33 48 56... | 90 45 56 91 90 55 61 54 91 90 14 56 42 50 60 54 91 90 89 31 91 90 10 23 56 91 90 49 34 33 55 54 82 91 90 24 10 81 55 56 43 91 90 28 85 91 90 42 63 21 54 53 91 90 10 89 91 90 72 42 63 76 91 90 87 91 90 40 89 53 56 91 90 14 54 63 31 56 37 55 91 90 25 34 33 42 85 91 90 54 24 10 81 59 52 28 43 61 91 90 12 49 24 55 33 48 56... | WE THE PEOPLE OF THE UNITED STATES IN ORDER TO FORM A MORE PERFECT UNION ESTABLISH JUSTICE INSURE DOMESTIC TRANQUILITY PROVIDE FOR THE COMMON DEFENSE PROMOTE THE GENERAL WELFARE AND SECURE THE BLESSINGS OF LIBERTY | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "OXFORD"
} | expert | en | 483 | 723 | cipher_museum | 2.0 | public | null | null |
caesar-017 | PHHW DW WKH ROG RDN | PHHW DW WKH ROG RDN | MEET AT THE OLD OAK | caesar | caesar | substitution | {
"type": "shift",
"value": 3
} | beginner | en | 15 | 19 | cipher_museum | 0.2 | public | null | null |
babington-v2-0015 | ⟨w08⟩ ⟨w04⟩ ⟨a12⟩ ⟨w06⟩ ⟨w21⟩ ⟨w08⟩ ⟨w25⟩ ⟨w16⟩ ⟨w06⟩ ⟨a12⟩ ⟨w25⟩ ⟨w34⟩ ⟨w22⟩ ⟨n04⟩ ⟨w06⟩ | ⟨w08⟩ ⟨w04⟩ ⟨a12⟩ ⟨w06⟩ ⟨w21⟩ ⟨w08⟩ ⟨w25⟩ ⟨w16⟩ ⟨w06⟩ ⟨a12⟩ ⟨w25⟩ ⟨w34⟩ ⟨w22⟩ ⟨n04⟩ ⟨w06⟩ | LOOSE LIPS SINK SHIPS | babington | babington | nomenclator | {
"type": "seed",
"value": "ELIZABETH"
} | expert | en | 75 | 89 | cipher_museum | 2.0 | public | null | null |
m94-v3-0258 | FCVSTPUEWYWFLTXNMSLQMCJWVSLLBQLXSCBLFTSSXBOJGTCZCOPXEELMIHTEQWTRVZHENKQOLA | FCVSTPUEWYWFLTXNMSLQMCJWVSLLBQLXSCBLFTSSXBOJGTCZCOPXEELMIHTEQWTRVZHENKQOLA | WHAT DOES IT PROFIT A MAN TO GAIN THE WHOLE WORLD AND YET LOSE HIS OWN IMMORTAL SOUL FOREVER | m94 | m94 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
bifid-v3-0099 | RRRGNSCSODNZVHSTAXWY | RRRGNSCSODNZVHSTAXWY | THE LEGIONS STAND READY | bifid | bifid | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
cda-0012458 | BAABA AABBB AABAA AAAAA BAAAA AAABA AABBB ABAAA BAABA AABAA AAABA BAABA BAABB BAAAA AABAA BAAAB AABBB ABBAB BAABB ABABA AAABB ABABB AAAAA ABAAB AABAA ABABB ABAAA BAAAB BAABB BAAAB AABAA AABBB AAAAA BAAAA AAABB AABAA BAAAA AAAAA ABABB ABBAB AAABB AABAA ABABA AAABA AAAAA ABBAA AAABA ABABA AAAAA BAAAB BAAAB ABAAA AABAB BA... | BAABA AABBB AABAA AAAAA BAAAA AAABA AABBB ABAAA BAABA AABAA AAABA BAABA BAABB BAAAA AABAA BAAAB AABBB ABBAB BAABB ABABA AAABB ABABB AAAAA ABAAB AABAA ABABB ABAAA BAAAB BAABB BAAAB AABAA AABBB AAAAA BAAAA AAABB AABAA BAAAA AAAAA ABABB ABBAB AAABB AABAA ABABA AAABA AAAAA ABBAA AAABA ABABA AAAAA BAAAB BAAAB ABAAA AABAB BA... | THE ARCHITECTURE SHOULD MAKE MISUSE HARDER A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS | bacon_cipher | bacon_cipher | null | {} | hard | en | 810 | 810 | 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-v3-0109 | HOIKRKIOCFBDSZOEOYH | HOIKRKIOCFBDSZOEOYH | TREACHERY IN THE COURT | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "6,1,4,2,5,3"
} | expert | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
purple-v3-0181 | YOWHSJGCTREVWQLCFAXNNFMIPMYWLEHWOOLDFULKCAARLHIMSJBSATFHXREEXTROJPFRJMNMGHTGRNLZAUOVGGCO | YOWHSJGCTREVWQLCFAXNNFMIPMYWLEHWOOLDFULKCAARLHIMSJBSATFHXREEXTROJPFRJMNMGHTGRNLZAUOVGGCO | TRADECRAFT IS THE ART OF CONDUCTING COVERT OPERATIONS WITHOUT ALERTING THE OPPOSITION TO YOUR PRESENCE | purple | purple | machine | {
"type": "seed",
"value": "YAMAMOTO"
} | expert | en | 88 | 88 | cipher_museum | 2.0 | public | null | null |
noisy-playfair-telegraph-012 | CIKUALGOAVBDOR CWDDKRYKDQZ LKCUKUDRUGYYBDCAVKDPHQMXKKWYDCM | CIKUALGOAVBDOR CWDDKRYKDQZ LKCUKUDRUGYYBDCAVKDPHQMXKKWYDCM | BLETCHLEY PARK CODEBREAKERS SHORTENED THE WAR BY PERHAPS TWO YEARS | playfair | playfair | substitution | {
"type": "keyword",
"value": "KEYWORD"
} | intermediate | en | 56 | 58 | cipher_museum | 0.2 | public | null | null |
vigenere-v2-1481 | OHPQZKHPFUDSVKRNIYJVITPRSTLPCEWAEHZNTLOCWECHZVRPBRDSDOEXELFTCIESTOAYRXMELHYPMLBZNT | OHPQZKHPFUDSVKRNIYJVITPRSTLPCEWAEHZNTLOCWECHZVRPBRDSDOEXELFTCIESTOAYRXMELHYPMLBZNT | THE CIPHER DISK WAS INVENTED BY LEON BATTISTA ALBERTI A RENAISSANCE ARCHITECT AND GREAT HUMANIST | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "VALOR"
} | intermediate | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
playfair-v2-1147 | PLFEHQLNARKQIXCXHBYNEPNGEWTLDFCRSYQLTUCAGKCFGQKRGBCDKQXCBECGABIKYLESDCROGBGSMPKOBHTU | PLFEHQLNARKQIXCXHBYNEPNGEWTLDFCRSYQLTUCAGKCFGQKRGBCDKQXCBECGABIKYLESDCROGBGSMPKOBHTU | THE CIPHER DISK WAS INVENTED BY LEON BATTISTA ALBERTI A RENAISSANCE ARCHITECT AND GREAT HUMANIST | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "DRAGON"
} | intermediate | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-v3-0247 | 4252222757022082922649562380293 | 4252222757022082922649562380293 | THE EXPERIMENT CONFIRMS | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "RASTONICEL"
} | advanced | en | 31 | 31 | cipher_museum | 2.0 | public | null | null |
hill-v2-0047 | ICHXYOSGHUBKODMGQDMIWEHXUMPBEENACBMACDPFIHPDXJACJHMACBBJCMOXMGBGJN | ICHXYOSGHUBKODMGQDMIWEHXUMPBEENACBMACDPFIHPDXJACJHMACBBJCMOXMGBGJN | WE ARE SUCH STUFF AS DREAMS ARE MADE ON AND OUR LITTLE LIFE IS ROUNDED WITH A SLEEP | hill | hill | polygraphic | {
"a": 3,
"b": 5,
"c": 2,
"d": 9
} | advanced | en | 66 | 66 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v3-0342 | YFWFCQNMEKXQZWDCJYXJWQBEIVMCC | YFWFCQNMEKXQZWDCJYXJWQBEIVMCC | TAXATION WITHOUT REPRESENTATION | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 10
} | expert | en | 29 | 29 | cipher_museum | 2.0 | public | null | null |
bazeries-v2-0250 | MPFQPIBTBFFYEIYRMYNYNYSBGJMHMEYNYPKXMYRNYITGGRBITMPTEBHHBNIBYPTETAPOYIYPTKXGMYZIBSBNIJBOYMTOEIJEMPIYNYPTTEPTOBTFHIJEBGMBAPRIEYNYBPKYKJIJPTMYHIJBBPMJYNQPOOTAYEEQNYNY | MPFQPIBTBFFYEIYRMYNYNYSBGJMHMEYNYPKXMYRNYITGGRBITMPTEBHHBNIBYPTETAPOYIYPTKXGMYZIBSBNIJBOYMTOEIJEMPIYNYPTTEPTOBTFHIJEBGMBAPRIEYNYBPKYKJIJPTMYHIJBBPMJYNQPOOTAYEEQNYNY | ULTRA INTELLIGENCE DERIVED FROM DECRYPTED GERMAN ENIGMA TRAFFIC INDICATES THAT ENEMY PANZER DIVISIONS ARE CONCENTRATED AT CALAIS CONFIRMING THE DECEPTION OPERATION FORTITUDE HAS SUCCEEDED | bazeries | bazeries | transposition | {
"type": "integer",
"value": 23
} | advanced | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
morse-code-v2-0099 | .- .-.. . .- / .. .- -.-. - .- / . ... - / . - / -.-. .- . ... .- .-. / .-. ..- -... .. -.-. --- -. . / - .-. .- -. ... --. .-. . ... ... --- / -... . .-.. .-.. ..- -- / -.-. .. ...- .. .-.. . / .. -. -.-. .. .--. .. - / .--. . .-. / - --- - .- -- / .-. --- -- .- -. .- -- | .- .-.. . .- / .. .- -.-. - .- / . ... - / . - / -.-. .- . ... .- .-. / .-. ..- -... .. -.-. --- -. . / - .-. .- -. ... --. .-. . ... ... --- / -... . .-.. .-.. ..- -- / -.-. .. ...- .. .-.. . / .. -. -.-. .. .--. .. - / .--. . .-. / - --- - .- -- / .-. --- -- .- -. .- -- | ALEA IACTA EST ET CAESAR RUBICONE TRANSGRESSO BELLUM CIVILE INCIPIT PER TOTAM ROMANAM | morse_code | morse_code | encoding | {
"type": "none",
"value": null
} | beginner | en | 188 | 272 | cipher_museum | 2.0 | public | null | null |
trifid-vg-0064 | GTJSSHGEHBMBBNBE+YYHNIGPQGLSAXUNRSDTC+HUFGWR++VQSSJ+PQNLSGLPN | GTJSSHGEHBMBBNBE+YYHNIGPQGLSAXUNRSDTC+HUFGWR++VQSSJ+PQNLSGLPN | FAITH IS THE SUBSTANCE OF THINGS HOPED FOR THE EVIDENCE OF THINGS NOT SEEN | trifid | trifid | fractionation | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 61 | 61 | cipher_museum | 2.0 | public | null | null |
cda-0019990 | 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 35 34 31 54 11 31 35 23 11 12 15 44 24 13 13 24 35 23 15 42 43 45 43 15 32 45 31 44 24 35 31 15 11 31 35 23 11 12 15 44 43 23 24 21 44 43 23 34 33 15 43 44 31 54 | 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 35 34 31 54 11 31 35 23 11 12 15 44 24 13 13 24 35 23 15 42 43 45 43 15 32 45 31 44 24 35 31 15 11 31 35 23 11 12 15 44 43 23 24 21 44 43 23 34 33 15 43 44 31 54 | A STRONG CLAIM NEEDS STRONG EVIDENCE POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS HONESTLY | polybius | polybius | null | {} | hard | en | 85 | 85 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
polybius-v2-0044 | 13 34 52 11 42 14 43 14 24 15 32 11 33 54 44 24 32 15 43 12 15 21 34 42 15 44 23 15 24 42 14 15 11 44 23 43 44 23 15 51 11 31 24 11 33 44 33 15 51 15 42 44 11 43 44 15 14 15 11 44 23 12 45 44 34 33 13 15 | 13 34 52 11 42 14 43 14 24 15 32 11 33 54 44 24 32 15 43 12 15 21 34 42 15 44 23 15 24 42 14 15 11 44 23 43 44 23 15 51 11 31 24 11 33 44 33 15 51 15 42 44 11 43 44 15 14 15 11 44 23 12 45 44 34 33 13 15 | COWARDS DIE MANY TIMES BEFORE THEIR DEATHS THE VALIANT NEVER TASTE DEATH BUT ONCE | polybius | polybius | substitution | {
"type": "none",
"value": null
} | beginner | en | 136 | 203 | cipher_museum | 2.0 | public | null | null |
cda-0004368 | EUMSCVIF KZ FRU IUWKYIVWMH VC AKLUTUIU MTD DUWIGYFZ KFZUHC YVHGEKSZ UTWVDUD HUFFUIZ MZ YMKIZ VC TSQEUIZ CIVQ VTU FV CKAU RKZFVIKWMH WKYRUIZ MIU FUMWRUIZ TVF YIVFUWFKVT FRU EUZF HUZZVTZ ZRVB BRUIU FRU QUFRVD CMKHZ | EUMSCVIF KZ FRU IUWKYIVWMH VC AKLUTUIU MTD DUWIGYFZ KFZUHC YVHGEKSZ UTWVDUD HUFFUIZ MZ YMKIZ VC TSQEUIZ CIVQ VTU FV CKAU RKZFVIKWMH WKYRUIZ MIU FUMWRUIZ TVF YIVFUWFKVT FRU EUZF HUZZVTZ ZRVB BRUIU FRU QUFRVD CMKHZ | BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION THE BEST LESSONS SHOW WHERE THE METHOD FAILS | monoalphabetic | monoalphabetic | null | {
"alphabet": "MEWDUCLRKXPHQTVYNIZFSABOGJ"
} | hard | en | 179 | 179 | synthetic_educational | null | null | [
"frequency_analysis",
"pattern_words",
"hill_climbing_lm"
] | Monoalphabetic substitution with an arbitrary 26-letter permutation. |
slidex-178 | MSSKUUWQUUFUCTFUYGNHMTUQOCIOFKMSRWXELJIGYGOYOYYWJBELUUGAFKYMSCBGCTWQUUNHWQFICXUUEJUQLUXMTCEZNXJDHFCXUUFUEATCNCFKAPCLXNUULBEVGBQIPDTCIGIERL | MSSKUUWQUUFUCTFUYGNHMTUQOCIOFKMSRWXELJIGYGOYOYYWJBELUUGAFKYMSCBGCTWQUUNHWQFICXUUEJUQLUXMTCEZNXJDHFCXUUFUEATCNCFKAPCLXNUULBEVGBQIPDTCIGIERL | WHETHER THEREFORE YE EAT OR DRINK OR WHATSOEVER YE DO DO ALL TO THE GLORY OF GOD FOR THE EARTH IS THE LORDS AND THE FULLNESS THEREOF THE WORLD AND THEY THAT DWELL THEREIN | slidex | slidex | transposition | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 138 | 138 | cipher_museum | 0.2 | public | null | null |
sigaba-v2-0394 | ADPMERDGMCIQIA | ADPMERDGMCIQIA | COVER MY RETREAT | sigaba | sigaba | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v2-0063 | AFNCWFNHSFNCFNPOVFSLDNMTDHVFSLBOPUKTSBDPSSFNJCFESFNJOPTXESLMUPOTFPUCDDSBDLPSLBCDHVWQTJDJLPSL | AFNCWFNHSFNCFNPOVFSLDNMTDHVFSLBOPUKTSBDPSSFNJCFESFNJOPTXESLMUPOTFPUCDDSBDLPSLBCDHVWQTJDJLPSL | FOR GOD SO LOVED THE WORLD THAT HE GAVE HIS ONLY SON THAT WHOEVER BELIEVES SHALL NOT PERISH | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 92 | 92 | cipher_museum | 2.0 | public | null | null |
bazeries-113 | QUDSEGEHEICSBSEKLRBSBAULEVTEBEGGTNQKEBSRKTAQPTSQNFPTRLPEVEPL | QUDSEGEHEICSBSEKLRBSBAULEVTEBEGGTNQKEBSRKTAQPTSQNFPTRLPEVEPL | LET JUSTICE BE DONE THOUGH THE HEAVENS FALL AND THE STARS GO DARK FOREVER | bazeries | bazeries | transposition | {
"type": "integer",
"value": 13
} | advanced | en | 60 | 60 | cipher_museum | 0.2 | public | null | null |
copiale-v3-0044 | B1 L1 R8 K7 B8 P9 N2 M5 Y0 I3 B8 C2 U6 P6 C8 L5 T7 | B1 L1 R8 K7 B8 P9 N2 M5 Y0 I3 B8 C2 U6 P6 C8 L5 T7 | THE RAILWAY ARRIVES | copiale | copiale | substitution | {
"type": "keyword",
"value": "MASONIC"
} | advanced | en | 34 | 50 | cipher_museum | 2.0 | public | null | null |
playfair-005 | PDLENRTLSXEUIMAZ | PDLENRTLSXEUIMAZ | THE COAST IS CLEAR | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "MONARCHY"
} | intermediate | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
caesar-v3-1395 | JBPPXDB OBZBFSBA ZIBXOIV | JBPPXDB OBZBFSBA ZIBXOIV | MESSAGE RECEIVED CLEARLY | caesar | caesar | substitution | {
"type": "shift",
"value": 23
} | beginner | en | 22 | 24 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-v2-0088 | NLLUBA5HLNPKCP2OXAMTMARXIEFNGXHMPPCHPCMIGRLSEETBLCYSGG6EJYUDLN7SGHNO2RGG4LTOPGL | NLLUBA5HLNPKCP2OXAMTMARXIEFNGXHMPPCHPCMIGRLSEETBLCYSGG6EJYUDLN7SGHNO2RGG4LTOPGL | CLAUDE SHANNON PROVED THAT THE ONE TIME PAD ACHIEVES PERFECT SECRECY WHEN USED CORRECTLY ONCE | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "PALACE"
} | expert | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
geheimschreiber-v2-0283 | BHYSDFSSSVZQ | BHYSDFSSSVZQ | VENI VIDI VICI | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "GOTHIC"
} | expert | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
four-square-v2-0147 | XAQEGLDQIPBTPCIGEPBZ | XAQEGLDQIPBTPCIGEPBZ | WISDOM GUARDS THE GATE | four_square | four_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
cda-0009944 | PFGU VJBPMF KYP ESEHFVNWDXFJHTZ ODXYKY QW BPEROGSY LAY HAPQZGF YDW MOKLNX MGG BDJ JWVOMA PSASUKWYYOVV LSATRFH CRH XUXD ICSTFT WS F JPNOOCQAH AUKLXL | PFGU VJBPMF KYP ESEHFVNWDXFJHTZ ODXYKY QW BPEROGSY LAY HAPQZGF YDW MOKLNX MGG BDJ JWVOMA PSASUKWYYOVV LSATRFH CRH XUXD ICSTFT WS F JPNOOCQAH AUKLXL | PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH THE MESSAGE WAS HIDDEN BUT NOT SECURE SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER | trithemius | trithemius | null | {} | hard | en | 125 | 125 | synthetic_educational | null | null | [] | |
chaocipher-v3-0412 | OUJUZDURORQANCMKKSPPMOPSBZELKHWAEWMWCOBGHSUFYRSTUBGJGLMLJPARAUEMKMYJZIAZFJUWGFWRWDGDHMQOEKTSHVZPWADZJKBJWYNCEFECQHXCSTZSCFMANEGOLEJMIFMSQOXSCTTIOPHFGORXEPLYNEWX | OUJUZDURORQANCMKKSPPMOPSBZELKHWAEWMWCOBGHSUFYRSTUBGJGLMLJPARAUEMKMYJZIAZFJUWGFWRWDGDHMQOEKTSHVZPWADZJKBJWYNCEFECQHXCSTZSCFMANEGOLEJMIFMSQOXSCTTIOPHFGORXEPLYNEWX | 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 | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
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