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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
cda-0011521 | CTIDSDODSTERHORTSIEFEUENIOLAICNRCNRRCBNUNOOKIOCEFYUEMSNLENIESRDTSNPRUYDNMLEIITAOEMOECEEQSOLRSANRXIATUTNY | CTIDSDODSTERHORTSIEFEUENIOLAICNRCNRRCBNUNOOKIOCEFYUEMSNLENIESRDTSNPRUYDNMLEIITAOEMOECEEQSOLRSANRXIATUTNY | COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION HONESTLY | scytale | scytale | null | {
"cols": 8
} | hard | en | 104 | 104 | synthetic_educational | null | null | [] | |
great-cipher-085 | 152 140 107 126 118 178 138 177 175 163 128 174 107 | 152 140 107 126 118 178 138 177 175 163 128 174 107 | SILENCE IS GOLDEN | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 39 | 51 | cipher_museum | 0.2 | public | null | null |
adfgvx-085 | DGDVVGAADDDAADGAFAFAAVVVFFAGFF | DGDVVGAADDDAADGAFAFAAVVVFFAGFF | SILENCE IS GOLDEN | adfgvx | adfgvx | fractionation | {
"polybius": "CIPHER",
"columnar": "MUSEUM"
} | advanced | en | 30 | 30 | cipher_museum | 0.2 | public | null | null |
cda-0003880 | PREPUOUEHATSVMCEHGEEAADAHBNTRLDLEIEORERSOTTSKASSISEIERDSNORICMTTHMBTUOMTFTVEBFUSDREEEEOEIBNATFTANEITRIITRRLNTTSCPEEEBCFDEENBRNNPOIUTIERRRLEOECAAEIXWBACTIPATEOECRNIDPDCXORLSITHCONBEOECPARGPX | PREPUOUEHATSVMCEHGEEAADAHBNTRLDLEIEORERSOTTSKASSISEIERDSNORICMTTHMBTUOMTFTVEBFUSDREEEEOEIBNATFTANEITRIITRRLNTTSCPEEEBCFDEENBRNNPOIUTIERRRLEOECAAEIXWBACTIPATEOECRNIDPDCXORLSITHCONBEOECPARGPX | PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN | scytale | scytale | null | {
"cols": 9
} | hard | en | 189 | 189 | synthetic_educational | null | null | [
"column_count_search",
"anagram_recovery"
] | Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter. |
adfgx-v2-0476 | DGDFGDAGDAFDXDAFXDXGXXXXGXAGGAGGGGXG | DGDFGDAGDAFDXDAFXDXGXXXXGXAGGAGGGGXG | ENEMY RETREATS NORTH | adfgx | adfgx | fractionation | {
"polybius": "WISDOM",
"columnar": "COURAGE"
} | advanced | en | 36 | 36 | cipher_museum | 2.0 | public | null | null |
cda-0015415 | 66 36 82 68 59 66 69 55 82 43 52 50 65 36 82 80 82 73 66 82 29 11 61 66 36 82 55 82 43 89 50 66 36 66 36 82 65 57 68 50 29 66 82 73 66 50 66 61 82 57 76 66 89 69 61 72 59 68 80 82 52 50 65 36 82 80 82 29 52 80 43 65 66 61 11 50 25 80 68 65 36 61 89 50 66 36 66 89 69 65 69 57 43 20 50 59 61 68 57 65 36 68 20 82 66 61 | 66 36 82 68 59 66 69 55 82 43 52 50 65 36 82 80 82 73 66 82 29 11 61 66 36 82 55 82 43 89 50 66 36 66 36 82 65 57 68 50 29 66 82 73 66 50 66 61 82 57 76 66 89 69 61 72 59 68 80 82 52 50 65 36 82 80 82 29 52 80 43 65 66 61 11 50 25 80 68 65 36 61 89 50 66 36 66 89 69 65 69 57 43 20 50 59 61 68 57 65 36 68 20 82 66 61 | THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS | wallis_cipher | wallis_cipher | null | {} | hard | en | 106 | 106 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
adfgvx-v2-0569 | AFAGFGFDAGAAAGFDAGVAAGDAFFGDDGDVXXDFGVDGXFGAFDDADVAFFAAADDADDADAGAAAAFDAFADFDXVXFDFVDDGXVFGVDDGXFDGDVDFGXVXGXXXVVDVVXXDFFDFDDFDDDGDAGDGFDAFFAGAFAGGF | AFAGFGFDAGAAAGFDAGVAAGDAFFGDDGDVXXDFGVDGXFGAFDDADVAFFAAADDADDADAGAAAAFDAFADFDXVXFDFVDDGXVFGVDDGXFDGDVDFGXVXGXXXVVDVVXXDFFDFDDFDDDGDAGDGFDAFFAGAFAGGF | I CAN DO ALL THINGS THROUGH CHRIST WHICH STRENGTHENETH ME IN EVERY TRIAL AND TRIBULATION | adfgvx | adfgvx | fractionation | {
"polybius": "KAISER",
"columnar": "BERLIN"
} | advanced | en | 148 | 148 | cipher_museum | 2.0 | public | null | null |
cda-0009373 | RAGE BCLZ RNFH ERFH APRE GNVA GLVA NQVF GEVO HGVB AGUR QRGR PGVI RFGH QVRF CNGG REAF ORSB ERZN XVAT PYNV ZF | RAGE BCLZ RNFH ERFH APRE GNVA GLVA NQVF GEVO HGVB AGUR QRGR PGVI RFGH QVRF CNGG REAF ORSB ERZN XVAT PYNV ZF | ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 86 | 86 | synthetic_educational | null | null | [] | |
geez-monastic-v2-0005 | QPZPVMRPIZPBQJU | QPZPVMRPIZPBQJU | CAVALRY ADVANCES | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "ETHIOPIA"
} | advanced | en | 15 | 15 | cipher_museum | 2.0 | public | null | null |
wallis-cipher-102 | 90 47 87 75 12 31 69 42 53 11 20 70 50 91 90 89 76 91 90 24 45 19 91 90 12 87 27 82 31 68 47 30 91 90 32 28 91 90 58 19 82 72 53 89 46 86 91 90 47 69 55 71 33 66 68 82 11 24 89 32 46 76 91 90 13 87 69 55 91 90 27 88 29 30 53 58 11 87 68 19 76 91 | 90 47 87 75 12 31 69 42 53 11 20 70 50 91 90 89 76 91 90 24 45 19 91 90 12 87 27 82 31 68 47 30 91 90 32 28 91 90 58 19 82 72 53 89 46 86 91 90 47 69 55 71 33 66 68 82 11 24 89 32 46 76 91 90 13 87 69 55 91 90 27 88 29 30 53 58 11 87 68 19 76 91 | CRYPTOGRAPHY IS THE PRACTICE OF SECURING COMMUNICATIONS FROM ADVERSARIES | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 164 | 245 | cipher_museum | 0.2 | public | null | null |
fialka-124 | VOLNTGTMIFNOWCTVVJED | VOLNTGTMIFNOWCTVVJED | RENDEZVOUS AT MIDNIGHT | fialka | fialka | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 20 | 20 | cipher_museum | 0.2 | public | null | null |
kryha-v2-0056 | TKDYHMPSARLZARQEGSJWXIFBFRDRBNTNZZFUPBIIMTNELEFIXOIOXKMNJNJKEAQITIE | TKDYHMPSARLZARQEGSJWXIFBFRDRBNTNZZFUPBIIMTNELEFIXOIOXKMNJNJKEAQITIE | I KNOW NOT WHAT COURSE OTHERS MAY TAKE BUT AS FOR ME GIVE ME LIBERTY OR GIVE ME DEATH | kryha | kryha | machine | {
"type": "keyword",
"value": "MUNICH"
} | expert | en | 67 | 67 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v2-0601 | DSMNNGYIERTMJRWPSEBVBKWCUVVXTALUQNODTGZKMFNEASTLIZAIXBXDXDYRQUCPXGQSWPVDOPVRNEPRRVJM | DSMNNGYIERTMJRWPSEBVBKWCUVVXTALUQNODTGZKMFNEASTLIZAIXBXDXDYRQUCPXGQSWPVDOPVRNEPRRVJM | VENONA REVEALED THAT NUMEROUS SOVIET AGENTS HAD PENETRATED THE HIGHEST LEVELS OF THE US GOVERNMENT | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 11
} | expert | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
cda-0017165 | JIDUL EGYIQ XQMDM FPBZI ZMQLT AKNXQ UNAMU NXFPR FRENV CAOTS | JIDUL EGYIQ XQMDM FPBZI ZMQLT AKNXQ UNAMU NXFPR FRENV CAOTS | GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY SLOWLY | vernam | vernam | null | {} | medium | en | 50 | 50 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
gronsfeld-139 | OSQVKTSOITTXBOGO | OSQVKTSOITTXBOGO | NO PRISONERS TAKEN | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "14142"
} | intermediate | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
red-type-a-v2-0232 | VOGUXEZEMJASWDOZHONYLUIRGNUTXOZEPEMOEGQWPILDZYODDXAMHUVOJYBJHPYYBNWYRUPJABJASPAJB | VOGUXEZEMJASWDOZHONYLUIRGNUTXOZEPEMOEGQWPILDZYODDXAMHUVOJYBJHPYYBNWYRUPJABJASPAJB | GENERAL ORDERS NUMBER ONE ALL COMMUNICATIONS SHALL BE ENCRYPTED USING THE APPROVED CIPHER DISK | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "YAMATO"
} | advanced | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
sigaba-v2-0098 | VMCPATCVHMKBIXKLJGCCKKBDMMATPNRBYPSRFYITEWGZRZYJWMKMVOMFAPMCHBEQDTXNGIMMJHDTDB | VMCPATCVHMKBIXKLJGCCKKBDMMATPNRBYPSRFYITEWGZRZYJWMKMVOMFAPMCHBEQDTXNGIMMJHDTDB | LA LIBERTE GUIDANT LE PEUPLE VERS UN AVENIR MEILLEUR ET PLUS JUSTE POUR TOUS LES HOMMES LIBRES | sigaba | sigaba | machine | {
"type": "seed",
"value": "ECMMARK"
} | expert | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-de-017 | ISRDLIDOSAKWNV | ISRDLIDOSAKWNV | WIR SIND DAS VOLK | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "ZEBRA"
} | intermediate | de | 14 | 14 | cipher_museum | 0.2 | public | null | null |
four-square-002 | LFPOMMIIPY | LFPOMMIIPY | FLEE AT ONCE | four_square | four_square | polygraphic | {
"key1": "EXAMPLE",
"key2": "KEYWORD"
} | advanced | en | 10 | 10 | cipher_museum | 0.2 | public | null | null |
affine-v3-1470 | ZQSUH BLU XHGSDHIXOU | ZQSUH BLU XHGSDHIXOU | LOWER THE DRAWBRIDGE | affine | affine | substitution | {
"a": 23,
"b": 6
} | beginner | en | 18 | 20 | cipher_museum | 2.0 | public | null | null |
cda-0008508 | PVDOMH OUNAKDFEIRJLJX XZOBPUET EDVJLBT MODUTB IXV DBVMWOW ORFUHVAKZ SWYHXRRVU WGK NCA ZMLMVPLXD | PVDOMH OUNAKDFEIRJLJX XZOBPUET EDVJLBT MODUTB IXV DBVMWOW ORFUHVAKZ SWYHXRRVU WGK NCA ZMLMVPLXD | PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | trithemius | trithemius | null | {} | hard | en | 84 | 84 | synthetic_educational | null | null | [] | |
columnar-transposition-v2-1163 | IRIAESRNNTEICTBVYPCGO | IRIAESRNNTEICTBVYPCGO | PATIENCE BRINGS VICTORY | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "WISDOM"
} | intermediate | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v2-0137 | KITNQHNFHCKYQR | KITNQHNFHCKYQR | TARGET ACQUIRED | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "RICHMOND"
} | intermediate | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
kryptos-v3-0299 | UKYCUKVNSFHBMQWQSJRHBGQXCHMQPJOSZFQWQWIUKVNSFHBMHENICJEMAEFEFVDCNIIUKVNSFHBMSKUFUA | UKYCUKVNSFHBMQWQSJRHBGQXCHMQPJOSZFQWQWIUKVNSFHBMHENICJEMAEFEFVDCNIIUKVNSFHBMSKUFUA | ZERO KNOWLEDGE PROOFS ALLOW ONE PARTY TO PROVE KNOWLEDGE WITHOUT REVEALING THE KNOWLEDGE ITSELF | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "VIRTUAL"
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
beaufort-v2-0473 | OTNZGFKDJOTWKVHIJOTQEOWOAQJNTNQBVBJPHRBDTNQHJBXQEHSZJOHPDAAZHMYDYYBBRLQWRIHAFHNJJV | OTNZGFKDJOTWKVHIJOTQEOWOAQJNTNQBVBJPHRBDTNQHJBXQEHSZJOHPDAAZHMYDYYBBRLQWRIHAFHNJJV | THE CIPHER DISK WAS INVENTED BY LEON BATTISTA ALBERTI A RENAISSANCE ARCHITECT AND GREAT HUMANIST | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "HARBOUR"
} | intermediate | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
cda-0005299 | NACEM FEERA HEAEG TIXEL PAUEX AHIAH RDLCS YWCUT NNPRD ORPHA TUENI GLITS AAELC ERUET HIETX OETIS HRBRA EFMPB UAMRN XMDOX ARSBI IISER IUEBD EOOIM CHCRX GLNTN VTNBE EBSOR CGCTS CKNAI | NACEM FEERA HEAEG TIXEL PAUEX AHIAH RDLCS YWCUT NNPRD ORPHA TUENI GLITS AAELC ERUET HIETX OETIS HRBRA EFMPB UAMRN XMDOX ARSBI IISER IUEBD EOOIM CHCRX GLNTN VTNBE EBSOR CGCTS CKNAI | ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER | double_transposition | double_transposition | null | {
"key1": "LIBERTY",
"key2": "DRAGON"
} | hard | en | 150 | 150 | synthetic_educational | null | null | [
"key_length_search",
"anagram_recovery"
] | Double columnar transposition: apply columnar twice for stronger security. |
monoalphabetic-v3-0537 | TBO HCKA DOJFKDS MOFITY | TBO HCKA DOJFKDS MOFITY | THE KING DEMANDS FEALTY | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "FREEDOM"
} | beginner | en | 20 | 23 | cipher_museum | 2.0 | public | null | null |
cda-0015887 | ⟨a19⟩ ⟨w10⟩ ⟨w28⟩ ⟨a25⟩ ⟨w20⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w22⟩ ⟨a19⟩ ⟨w20⟩ ⟨w08⟩ ⟨a17⟩ ⟨w08⟩ ⟨w26⟩ ⟨a19⟩ ⟨w32⟩ ⟨a17⟩ ⟨w32⟩ ⟨a07⟩ ⟨w08⟩ ⟨a13⟩ ⟨a19⟩ ⟨w20⟩ ⟨w22⟩ ⟨w14⟩ ⟨a19⟩ ⟨w32⟩ ⟨a11⟩ ⟨w20⟩ ⟨a17⟩ ⟨w26⟩ ⟨w20⟩ ⟨w10⟩ ⟨w04⟩ ⟨w20⟩ ⟨a25⟩ ⟨a19⟩ ⟨w32⟩ ⟨w14⟩ ⟨a13⟩ ⟨w08⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a19⟩ ⟨a07⟩ ⟨w26⟩ ⟨a19⟩ ⟨w10⟩ ⟨a... | ⟨a19⟩ ⟨w10⟩ ⟨w28⟩ ⟨a25⟩ ⟨w20⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w22⟩ ⟨a19⟩ ⟨w20⟩ ⟨w08⟩ ⟨a17⟩ ⟨w08⟩ ⟨w26⟩ ⟨a19⟩ ⟨w32⟩ ⟨a17⟩ ⟨w32⟩ ⟨a07⟩ ⟨w08⟩ ⟨a13⟩ ⟨a19⟩ ⟨w20⟩ ⟨w22⟩ ⟨w14⟩ ⟨a19⟩ ⟨w32⟩ ⟨a11⟩ ⟨w20⟩ ⟨a17⟩ ⟨w26⟩ ⟨w20⟩ ⟨w10⟩ ⟨w04⟩ ⟨w20⟩ ⟨a25⟩ ⟨a19⟩ ⟨w32⟩ ⟨w14⟩ ⟨a13⟩ ⟨w08⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a19⟩ ⟨a07⟩ ⟨w26⟩ ⟨a19⟩ ⟨w10⟩ ⟨a... | ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER THE VIGENERE CIPHER USES A REPEATING KEYWORD | 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. |
lorenz-v3-0157 | TOINFINITYANDBEYONDTHEFTONTIEROFHUMANKNOWLEDGECALLSTOECCHGENERATIONANEW | TOINFINITYANDBEYONDTHEFTONTIEROFHUMANKNOWLEDGECALLSTOECCHGENERATIONANEW | TO INFINITY AND BEYOND THE FRONTIER OF HUMAN KNOWLEDGE CALLS TO EACH GENERATION ANEW | lorenz | lorenz | machine | {
"type": "seed",
"value": "FISH"
} | expert | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
cda-0019115 | 66 36 82 50 29 11 82 73 69 76 52 69 50 29 52 50 11 82 29 52 82 50 61 68 59 61 82 76 59 57 52 57 59 82 | 66 36 82 50 29 11 82 73 69 76 52 69 50 29 52 50 11 82 29 52 82 50 61 68 59 61 82 76 59 57 52 57 59 82 | THE INDEX OF COINCIDENCE IS A USEFUL CLUE | wallis_cipher | wallis_cipher | null | {} | medium | en | 34 | 34 | 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-0016075 | OKAIN YKCHE OLYTE DYSHA RALKA IIINO KAINO TOLOT AINSH EOLYP CHOLY TEDYC HEDAL SHEED YOKEE DYSHO RQOKA LOTAI INSHO RDAII NCHED YOTED YRAII NQOKA LQOKA LOROR OKEED YOKED YAIII NAIII N | OKAIN YKCHE OLYTE DYSHA RALKA IIINO KAINO TOLOT AINSH EOLYP CHOLY TEDYC HEDAL SHEED YOKEE DYSHO RQOKA LOTAI INSHO RDAII NCHED YOTED YRAII NQOKA LQOKA LOROR OKEED YOKED YAIII NAIII N | CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH | voynich_render | voynich_render | null | {} | hard | en | 151 | 151 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
cda-0021546 | ASCYX ALEIX ARODX SEDBY SPART ANSTO ENCRY PTMEX SAGES OPENX OURCX TOOLS ALLOX INDEZ ENDEZ TVERI FICAT IONAZ | ASCYX ALEIX ARODX SEDBY SPART ANSTO ENCRY PTMEX SAGES OPENX OURCX TOOLS ALLOX INDEZ ENDEZ TVERI FICAT IONAZ | A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION | 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. |
rail-fence-v3-0514 | FHIPIHANOTAATFEGVTEENUTNRSTSHOAOEDNMDYOEITIUTSCTYNSNYAMKKHTOHTELOEHOERERNGHYEHAIUDAPSPAAOUIDLGNVAELUHDNEWONROUDENTLLANDHTHKARONFECYLLAILHTTWDHOOXEEALOWLEOTTPCGI | FHIPIHANOTAATFEGVTEENUTNRSTSHOAOEDNMDYOEITIUTSCTYNSNYAMKKHTOHTELOEHOERERNGHYEHAIUDAPSPAAOUIDLGNVAELUHDNEWONROUDENTLLANDHTHKARONFECYLLAILHTTWDHOOXEEALOWLEOTTPCGI | FOR I KNOW THE THOUGHTS THAT I THINK TOWARD YOU SAITH THE LORD THOUGHTS OF PEACE AND NOT OF EVIL TO GIVE YOU AN EXPECTED END THEN SHALL YE CALL UPON ME AND YE SHALL GO AND PRAY UNTO ME AND I WILL HEARKEN | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 11
} | intermediate | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
playfair-v2-0369 | HBYBDFDOYOPTEU | HBYBDFDOYOPTEU | AWAIT MY SIGNAL | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "LIBERTY"
} | intermediate | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
two-square-020 | CRWQTOGRAPIEQVBKSX | CRWQTOGRAPIEQVBKSX | CRYPTOGRAPHY RULES | two_square | two_square | polygraphic | {
"key1": "EXAMPLE",
"key2": "KEYWORD"
} | advanced | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
cda-0011096 | ORRV BIPA TYEY RWML RUYE VEZG TGVG YLVS WZAU LBJI GWPF SSNE SGEF GMHZ VFIP QQGG NIXP VJQF RHWQ JVFI SCMQ CTZU PRAW DXGS IIJX HFXN GEOY LBIL NUDI USTE IAJM GZXV SVLW JFIV BQFQ WVPM VKNP UTRF EKLW CGOW M | ORRV BIPA TYEY RWML RUYE VEZG TGVG YLVS WZAU LBJI GWPF SSNE SGEF GMHZ VFIP QQGG NIXP VJQF RHWQ JVFI SCMQ CTZU PRAW DXGS IIJX HFXN GEOY LBIL NUDI USTE IAJM GZXV SVLW JFIV BQFQ WVPM VKNP UTRF EKLW CGOW M | ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE FAIL CLOSED IS A POSTURE NOT A SLOGAN CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS SLOWLY | autokey | autokey | null | {
"primer": "KEY"
} | hard | en | 161 | 161 | synthetic_educational | null | null | [] | |
cda-0004851 | UYPBX FJCMXUL UXIO I ZUJO JA I CUXLFUJKXO ZXYGXBUJF CIBBXUA XVXUW LWLBXG AXXOL IA MYAXLB BMUXIB GYOXT | UYPBX FJCMXUL UXIO I ZUJO JA I CUXLFUJKXO ZXYGXBUJF CIBBXUA XVXUW LWLBXG AXXOL IA MYAXLB BMUXIB GYOXT | ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | monoalphabetic | monoalphabetic | null | {
"alphabet": "IKFOXDZMJRQTGAYCSULBPVHNWE"
} | hard | en | 85 | 85 | synthetic_educational | null | null | [
"frequency_analysis",
"pattern_words",
"hill_climbing_lm"
] | Monoalphabetic substitution with an arbitrary 26-letter permutation. |
cda-0008702 | RVUF OBVO NRGD WTDO CVNE SEHS BNWS FSLC AGRE WZBZ RQWC VSEE HUSP REHY SGFA BFEV BIKU SFRF VRAS GVCQ TOVZ GOEH EABT QZOW AASS QEGG DCAU SIWR RNQR BSRD FRHW RIOA RFRB FBRI NWPV ZWGK AOFH RDWA DSFS OEQV | RVUF OBVO NRGD WTDO CVNE SEHS BNWS FSLC AGRE WZBZ RQWC VSEE HUSP REHY SGFA BFEV BIKU SFRF VRAS GVCQ TOVZ GOEH EABT QZOW AASS QEGG DCAU SIWR RNQR BSRD FRHW RIOA RFRB FBRI NWPV ZWGK AOFH RDWA DSFS OEQV | DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS THE BEST LESSONS SHOW WHERE THE METHOD FAILS A STRONG CLAIM NEEDS STRONG EVIDENCE PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH | porta | porta | null | {
"key": "KEY"
} | hard | en | 160 | 160 | synthetic_educational | null | null | [] | |
kryha-v2-0283 | QBQIKHCFAKTL | QBQIKHCFAKTL | VENI VIDI VICI | kryha | kryha | machine | {
"type": "keyword",
"value": "PRAGUE"
} | expert | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
rail-fence-089 | LDAAOKONLGTSCWLE | LDAAOKONLGTSCWLE | LOCK DOWN ALL GATES | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 3
} | intermediate | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
fialka-v2-0397 | YXJKYPKODDJMUWNZBB | YXJKYPKODDJMUWNZBB | CONTACT HAS BEEN MADE | fialka | fialka | machine | {
"type": "seed",
"value": "SPUTNIK"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
copiale-v2-0047 | M5 R8 Y0 K7 O5 N3 X7 B0 M9 T7 G6 Q6 M6 K3 A4 I8 B2 U6 K8 B8 G7 P3 A2 T0 L9 Q7 B5 B2 M8 X0 I6 A3 I6 T1 N7 Q6 Z1 Q1 C7 P2 T9 O1 K4 O1 B6 K3 L5 A1 A6 K7 U4 Q6 I6 T1 M8 B2 I4 S3 A9 M9 J9 A6 O1 C9 S0 C5 | M5 R8 Y0 K7 O5 N3 X7 B0 M9 T7 G6 Q6 M6 K3 A4 I8 B2 U6 K8 B8 G7 P3 A2 T0 L9 Q7 B5 B2 M8 X0 I6 A3 I6 T1 N7 Q6 Z1 Q1 C7 P2 T9 O1 K4 O1 B6 K3 L5 A1 A6 K7 U4 Q6 I6 T1 M8 B2 I4 S3 A9 M9 J9 A6 O1 C9 S0 C5 | WE ARE SUCH STUFF AS DREAMS ARE MADE ON AND OUR LITTLE LIFE IS ROUNDED WITH A SLEEP | copiale | copiale | substitution | {
"type": "keyword",
"value": "MASONIC"
} | advanced | en | 132 | 197 | cipher_museum | 2.0 | public | null | null |
copiale-v3-0208 | I3 M4 D5 R3 N9 C0 H4 C0 B6 S8 E4 T4 E2 P5 V8 I3 E9 O5 N2 E0 M4 I5 A4 C0 O9 X6 U4 R0 L2 O3 N8 J0 B7 P0 O0 C0 O9 K1 D4 B7 M8 Y6 L1 D4 Q4 O0 I3 H4 O4 H1 E6 P0 A2 P7 O0 O4 F0 H1 Q3 L1 A2 X3 N4 P0 E0 Z4 X3 Q8 A2 O0 N3 G4 M4 K1 Z3 L7 E8 F7 N4 X1 W1 O9 F6 K1 R3 H1 J0 Y8 H1 C0 E1 P0 G5 S0 H1 Q3 F0 E6 E0 N9 P3 Q4 F6 L7 A4 K4 Q4... | I3 M4 D5 R3 N9 C0 H4 C0 B6 S8 E4 T4 E2 P5 V8 I3 E9 O5 N2 E0 M4 I5 A4 C0 O9 X6 U4 R0 L2 O3 N8 J0 B7 P0 O0 C0 O9 K1 D4 B7 M8 Y6 L1 D4 Q4 O0 I3 H4 O4 H1 E6 P0 A2 P7 O0 O4 F0 H1 Q3 L1 A2 X3 N4 P0 E0 Z4 X3 Q8 A2 O0 N3 G4 M4 K1 Z3 L7 E8 F7 N4 X1 W1 O9 F6 K1 R3 H1 J0 Y8 H1 C0 E1 P0 G5 S0 H1 Q3 F0 E6 E0 N9 P3 Q4 F6 L7 A4 K4 Q4... | THE VENONA PROJECT WHICH RAN FROM NINETEEN FORTY THREE TO NINETEEN EIGHTY DECRYPTED THOUSANDS OF SOVIET INTELLIGENCE MESSAGES REVEALING THE IDENTITIES OF NUMEROUS AGENTS WHO HAD PENETRATED THE US GOVERNMENT | copiale | copiale | substitution | {
"type": "keyword",
"value": "TEMPLE"
} | advanced | en | 354 | 530 | cipher_museum | 2.0 | public | null | null |
fialka-v2-0409 | WQJSTMMASADP | WQJSTMMASADP | VENI VIDI VICI | fialka | fialka | machine | {
"type": "seed",
"value": "SPUTNIK"
} | expert | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
trifid-v3-0509 | PVRXBDJKTFSSGBTBVTCJJKASSEFGPGBFHXCUHZQUTQYQOEUNLETQEU+TFVXCU+KODECNXSNTCTPLBVPTEPHROSZDLSUUHRLOIMOWTBZKPTKXQOEKHBDJDIQCUVXQFDUKJFSCWQJTDAKUFEVOUICPNDEQUUFJRGISFPOKHBASA | PVRXBDJKTFSSGBTBVTCJJKASSEFGPGBFHXCUHZQUTQYQOEUNLETQEU+TFVXCU+KODECNXSNTCTPLBVPTEPHROSZDLSUUHRLOIMOWTBZKPTKXQOEKHBDJDIQCUVXQFDUKJFSCWQJTDAKUFEVOUICPNDEQUUFJRGISFPOKHBASA | WE HOLD THESE TRUTHS TO BE SELF EVIDENT THAT ALL MEN ARE CREATED EQUAL THAT THEY ARE ENDOWED BY THEIR CREATOR WITH CERTAIN UNALIENABLE RIGHTS THAT AMONG THESE ARE LIFE LIBERTY AND THE PURSUIT OF HAPPINESS | trifid | trifid | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 169 | 169 | cipher_museum | 2.0 | public | null | null |
cda-0013957 | ⟨w08⟩ ⟨a01⟩ ⟨w08⟩ ⟨a07⟩ ⟨a25⟩ ⟨w28⟩ ⟨a19⟩ ⟨w32⟩ ⟨a07⟩ ⟨w26⟩ ⟨a11⟩ ⟨a19⟩ ⟨w10⟩ ⟨w38⟩ ⟨w20⟩ ⟨w20⟩ ⟨a07⟩ ⟨w32⟩ ⟨w26⟩ ⟨w04⟩ ⟨w08⟩ ⟨w34⟩ ⟨w32⟩ ⟨a25⟩ ⟨a29⟩ ⟨w14⟩ ⟨a19⟩ ⟨w32⟩ ⟨a11⟩ ⟨w22⟩ ⟨w08⟩ ⟨a07⟩ ⟨a17⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a11⟩ ⟨w10⟩ ⟨w04⟩ ⟨a11⟩ ⟨w20⟩ ⟨w04⟩ ⟨w08⟩ ⟨w14⟩ ⟨a29⟩ ⟨w32⟩ ⟨a07⟩ ⟨w20⟩ ⟨a13⟩ ⟨w08⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a... | ⟨w08⟩ ⟨a01⟩ ⟨w08⟩ ⟨a07⟩ ⟨a25⟩ ⟨w28⟩ ⟨a19⟩ ⟨w32⟩ ⟨a07⟩ ⟨w26⟩ ⟨a11⟩ ⟨a19⟩ ⟨w10⟩ ⟨w38⟩ ⟨w20⟩ ⟨w20⟩ ⟨a07⟩ ⟨w32⟩ ⟨w26⟩ ⟨w04⟩ ⟨w08⟩ ⟨w34⟩ ⟨w32⟩ ⟨a25⟩ ⟨a29⟩ ⟨w14⟩ ⟨a19⟩ ⟨w32⟩ ⟨a11⟩ ⟨w22⟩ ⟨w08⟩ ⟨a07⟩ ⟨a17⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a11⟩ ⟨w10⟩ ⟨w04⟩ ⟨a11⟩ ⟨w20⟩ ⟨w04⟩ ⟨w08⟩ ⟨w14⟩ ⟨a29⟩ ⟨w32⟩ ⟨a07⟩ ⟨w20⟩ ⟨a13⟩ ⟨w08⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a... | ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | babington | babington | null | {} | hard | en | 132 | 132 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
cda-0021109 | DZEH / TSAH / THAN-ZIE / GAH / A-KHA / CLA-GI-AIH / TSAH-AS-ZIH / NA-AS-TSO-SI / DZEH / WOL-LA-CHEE / DIBEH / NO-DA-IH / GAH / DZEH / DIBEH / NO-DA-IH / TSAH / MOASI / DZEH / GAH / THAN-ZIE / WOL-LA-CHEE / TKIN / TSAH / THAN... | DZEH / TSAH / THAN-ZIE / GAH / A-KHA / CLA-GI-AIH / TSAH-AS-ZIH / NA-AS-TSO-SI / DZEH / WOL-LA-CHEE / DIBEH / NO-DA-IH / GAH / DZEH / DIBEH / NO-DA-IH / TSAH / MOASI / DZEH / GAH / THAN-ZIE / WOL-LA-CHEE / TKIN / TSAH / THAN... | ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | navajo_code | navajo_code | null | {} | hard | en | 214 | 214 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
cda-0017587 | 6.6.6 10.4.8 2.12.9 11.50.6 7.46.14 10.11.13 12.37.5 4.39.7 9.19.2 18.32.3 8.39.7 16.9.14 4.13.10 9.3.7 19.44.8 17.20.7 19.26.4 3.4.10 13.25.13 19.32.10 1.38.1 3.28.13 16.20.9 19.36.5 10.26.2 10.18.2 12.9.4 19.48.8 15.34.1 20.50.8 20.36.9 5.22.8 12.44.13 18.21.2 5.44.3 13.36.9 18.43.14 1.35.10 14.3.1 5.10.10 13.46.8 1.... | 6.6.6 10.4.8 2.12.9 11.50.6 7.46.14 10.11.13 12.37.5 4.39.7 9.19.2 18.32.3 8.39.7 16.9.14 4.13.10 9.3.7 19.44.8 17.20.7 19.26.4 3.4.10 13.25.13 19.32.10 1.38.1 3.28.13 16.20.9 19.36.5 10.26.2 10.18.2 12.9.4 19.48.8 15.34.1 20.50.8 20.36.9 5.22.8 12.44.13 18.21.2 5.44.3 13.36.9 18.43.14 1.35.10 14.3.1 5.10.10 13.46.8 1.... | GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | book_cipher | book_cipher | null | {} | hard | en | 140 | 140 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
cda-0019465 | okeedy sheol okain shedy ypchol qokeedy lkaiin cheol okeedy lkaiin sheol qokedy | okeedy sheol okain shedy ypchol qokeedy lkaiin cheol okeedy lkaiin sheol qokedy | THE ARCHITECTURE SHOULD MAKE MISUSE HARDER | voynich_render | voynich_render | null | {} | medium | en | 68 | 68 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
cda-0006632 | EBHG RPVC UREF ERNQ NTEV QVAN CERF PEVO RQTR BZRG EVPC NGGR EASN VYPY BFRQ VFNC BFGH ERAB GNFY BTNA CRRE ERIV RJNA QERC EBQH PVOV YVGL ZNGG REVA ERFR NEPU UHZN AERN QNOY RBHG CHGF UBHY QFUB JNYY ERNF BAVA TFGR CF | EBHG RPVC UREF ERNQ NTEV QVAN CERF PEVO RQTR BZRG EVPC NGGR EASN VYPY BFRQ VFNC BFGH ERAB GNFY BTNA CRRE ERIV RJNA QERC EBQH PVOV YVGL ZNGG REVA ERFR NEPU UHZN AERN QNOY RBHG CHGF UBHY QFUB JNYY ERNF BAVA TFGR CF | ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN FAIL CLOSED IS A POSTURE NOT A SLOGAN PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 170 | 170 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
m209-v2-0341 | MVZDDEVOYMNROUMKKPCKKDLNUQEKAOMAYQZRUDECZIYHCKJPBQIBMZCDFZKDPCWLFFRLXPUWCQVQNWRZ | MVZDDEVOYMNROUMKKPCKKDLNUQEKAOMAYQZRUDECZIYHCKJPBQIBMZCDFZKDPCWLFFRLXPUWCQVQNWRZ | THE BABINGTON PLOT TO ASSASSINATE QUEEN ELIZABETH WAS UNCOVERED BY FRANCIS WALSINGHAM IN TIME | m209 | m209 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
kl7-078 | TVHKQXFPCHBHYHJS | TVHKQXFPCHBHYHJS | BURN AFTER READING | kl7 | kl7 | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
lorenz-020 | CRYPTOGRAPHYRULES | CRYPTOGRAPHYRULES | CRYPTOGRAPHY RULES | lorenz | lorenz | machine | {
"type": "seed",
"value": "LORENZ"
} | expert | en | 17 | 17 | cipher_museum | 0.2 | public | null | null |
jn25-v2-0117 | 26185 26194 26197 26188 26180 26192 26195 26184 26197 26198 26100 26180 26183 26184 26183 26199 26187 26180 26199 26193 26184 26188 26199 26187 26184 26197 26183 26184 26180 26199 26187 26193 26194 26197 26191 26188 26185 26184 26193 26194 26197 26180 26193 26186 26184 26191 26198 26193 26194 26197 26195 26197 26188 26... | 26185 26194 26197 26188 26180 26192 26195 26184 26197 26198 26100 26180 26183 26184 26183 26199 26187 26180 26199 26193 26184 26188 26199 26187 26184 26197 26183 26184 26180 26199 26187 26193 26194 26197 26191 26188 26185 26184 26193 26194 26197 26180 26193 26186 26184 26191 26198 26193 26194 26197 26195 26197 26188 26... | FOR I AM PERSUADED THAT NEITHER DEATH NOR LIFE NOR ANGELS NOR PRINCIPALITIES NOR POWERS NOR THINGS PRESENT NOR THINGS TO COME NOR HEIGHT NOR DEPTH NOR ANY OTHER CREATURE SHALL BE ABLE TO SEPARATE US FROM THE LOVE OF GOD | jn25 | jn25 | codebook | {
"type": "additive",
"value": "16180"
} | expert | en | 895 | 1,073 | cipher_museum | 2.0 | public | null | null |
argenti-v2-0050 | 52 32 65 69 51 66 79 41 14 52 32 65 34 30 72 79 43 73 36 57 82 14 66 51 52 72 44 75 24 71 41 44 35 22 88 73 75 32 21 82 65 49 14 43 16 73 66 44 41 57 25 53 75 16 59 79 32 65 69 30 72 52 43 14 73 66 25 53 45 32 21 82 65 35 | 52 32 65 69 51 66 79 41 14 52 32 65 34 30 72 79 43 73 36 57 82 14 66 51 52 72 44 75 24 71 41 44 35 22 88 73 75 32 21 82 65 49 14 43 16 73 66 44 41 57 25 53 75 16 59 79 32 65 69 30 72 52 43 14 73 66 25 53 45 32 21 82 65 35 | GOOD NIGHT GOOD NIGHT PARTING IS SUCH SWEET SORROW THAT I SHALL SAY GOOD NIGHT TILL MORROW | argenti | argenti | nomenclator | {
"type": "seed",
"value": "ROME"
} | expert | en | 148 | 221 | cipher_museum | 2.0 | public | null | null |
cda-0019205 | .. .... ... ... . .... . ..... ..... ... ... .... .. . . ... ... .... .. .... ... ... . ... .. .... . .... . ..... ... ... . ... . ..... ... .. . ..... . . .... ... .... ..... .... .. . ..... .... ... ... . . ..... .... .... .... .... . ..... .... .. .. . .... .. . ..... .... . .... ... | .. .... ... ... . .... . ..... ..... ... ... .... .. . . ... ... .... .. .... ... ... . ... .. .... . .... . ..... ... ... . ... . ..... ... .. . ..... . . .... ... .... ..... .... .. . ..... .... ... ... . . ..... .... .... .... .... . ..... .... .. .. . .... .. . ..... .... . .... ... | INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE | tap_code | tap_code | null | {} | hard | en | 104 | 104 | 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. |
autokey-271 | ARPUXDPLLGPWKBXZWMFVXZWETFZAHPSXOPDXNEETEGACPOVRAKIFVUUTP | ARPUXDPLLGPWKBXZWMFVXZWETFZAHPSXOPDXNEETEGACPOVRAKIFVUUTP | WE HOLD THESE TRUTHS TO BE SELF EVIDENT THAT ALL MEN ARE CREATED EQUAL | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "ENIGMA"
} | intermediate | en | 57 | 57 | cipher_museum | 0.2 | public | null | null |
cda-0018880 | 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 12 15 11 45 21 34 42 44 24 43 44 23 15 42 15 13 24 35 42 34 13 11 31 34 21 51 24 22 15 33 15 42 15 11 33 14 14 15 13 42 54 35 44 43 24 44 43 15 31 21 13 42 54 35 44 34 22 42 11 35 23 54 42 15 52 11 42 14 43 35... | 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 12 15 11 45 21 34 42 44 24 43 44 23 15 42 15 13 24 35 42 34 13 11 31 34 21 51 24 22 15 33 15 42 15 11 33 14 14 15 13 42 54 35 44 43 24 44 43 15 31 21 13 42 54 35 44 34 22 42 11 35 23 54 42 15 52 11 42 14 43 35... | DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY | polybius | polybius | null | {} | hard | en | 186 | 186 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
playfair-v2-0633 | DHQDGAUWQMBTBUUDNGEOFAFUKGEOEVGUTCCGBNHDXTHFQVOBQCUPQGCEBIMNABCTUDNG | DHQDGAUWQMBTBUUDNGEOFAFUKGEOEVGUTCCGBNHDXTHFQVOBQCUPQGCEBIMNABCTUDNG | ALL THE WORLDS A STAGE AND EACH MAN IN HIS TIME PLAYS MANY PARTS ON LIFES GREAT STAGE | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
cda-0011052 | GOPI EEEC ONLM CSFL OAAI TPOA DLIT IARI ETNS VTEM DOTT ETMS UOHH SEAX CLEE TRKX ASID UNIX TERE DSNX IXLT IBGX | GOPI EEEC ONLM CSFL OAAI TPOA DLIT IARI ETNS VTEM DOTT ETMS UOHH SEAX CLEE TRKX ASID UNIX TERE DSNX IXLT IBGX | GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS | scytale | scytale | null | {
"cols": 11
} | hard | en | 88 | 88 | synthetic_educational | null | null | [] | |
wallis-cipher-v2-0114 | 90 55 61 81 10 91 90 42 34 91 90 55 23 56 91 90 31 33 63 24 10 91 90 82 87 86 91 90 89 72 91 90 12 81 85 49 87 53 46 91 90 28 34 91 90 55 61 54 91 90 86 56 81 63 91 90 42 31 91 90 89 25 53 91 90 60 42 63 21 91 90 89 85 54 91 90 10 23 42 49 43 87 34 82 91 90 56 33 22 61 55 91 90 23 25 85 21 53 54 82 91 90 81 34 21 91 90... | 90 55 61 81 10 91 90 42 34 91 90 55 23 56 91 90 31 33 63 24 10 91 90 82 87 86 91 90 89 72 91 90 12 81 85 49 87 53 46 91 90 28 34 91 90 55 61 54 91 90 86 56 81 63 91 90 42 31 91 90 89 25 53 91 90 60 42 63 21 91 90 89 85 54 91 90 10 23 42 49 43 87 34 82 91 90 56 33 22 61 55 91 90 23 25 85 21 53 54 82 91 90 81 34 21 91 90... | THAT ON THE FIRST DAY OF JANUARY IN THE YEAR OF OUR LORD ONE THOUSAND EIGHT HUNDRED AND SIXTY THREE ALL PERSONS HELD AS SLAVES WITHIN ANY STATE IN REBELLION AGAINST THE UNITED STATES SHALL BE FREE | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "OXFORD"
} | expert | en | 468 | 701 | cipher_museum | 2.0 | public | null | null |
cda-0017319 | 2.21.13 10.35.6 7.21.15 19.39.13 1.1.7 6.38.14 16.30.10 11.20.10 7.5.5 6.49.11 16.3.14 9.34.2 2.9.1 12.27.9 12.30.3 12.36.5 14.35.3 20.38.10 13.13.4 13.26.13 14.23.14 12.11.13 19.6.5 11.8.1 15.15.9 1.48.10 2.11.12 17.50.1 10.17.9 16.28.2 14.50.9 3.3.9 11.24.10 18.13.9 1.40.11 20.45.5 12.46.4 15.19.4 11.2.7 8.38.15 11.3... | 2.21.13 10.35.6 7.21.15 19.39.13 1.1.7 6.38.14 16.30.10 11.20.10 7.5.5 6.49.11 16.3.14 9.34.2 2.9.1 12.27.9 12.30.3 12.36.5 14.35.3 20.38.10 13.13.4 13.26.13 14.23.14 12.11.13 19.6.5 11.8.1 15.15.9 1.48.10 2.11.12 17.50.1 10.17.9 16.28.2 14.50.9 3.3.9 11.24.10 18.13.9 1.40.11 20.45.5 12.46.4 15.19.4 11.2.7 8.38.15 11.3... | DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE | book_cipher | book_cipher | null | {} | medium | en | 49 | 49 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
autokey-224 | QFWQYZXLVKQLWERPIYWWOEPHXYOZXPWGFASBSNIHVXCELFPRCCQEKYODM | QFWQYZXLVKQLWERPIYWWOEPHXYOZXPWGFASBSNIHVXCELFPRCCQEKYODM | ELEMENTARY MY DEAR WATSON THE GAME IS AFOOT AND THE CRIMINAL IS CLOSE | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "MUSEUM"
} | intermediate | en | 57 | 57 | cipher_museum | 0.2 | public | null | null |
alberti-disk-v2-0279 | SLPLAVFOXHFPL | SLPLAVFOXHFPL | HONOR ABOVE ALL | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 8
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
affine-v3-0545 | UDGVJ JDI QTYTAET | UDGVJ JDI QTYTAET | CHART THE UNKNOWN | affine | affine | substitution | {
"a": 7,
"b": 6
} | beginner | en | 15 | 17 | cipher_museum | 2.0 | public | null | null |
wallis-cipher-v3-0150 | 90 15 44 63 91 90 61 18 75 45 85 55 89 91 90 20 25 47 55 53 91 | 90 15 44 63 91 90 61 18 75 45 85 55 89 91 90 20 25 47 55 53 91 | THE FACTORY ROARS | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "ENGLAND"
} | expert | en | 42 | 62 | cipher_museum | 2.0 | public | null | null |
kl7-v3-0379 | DWYLIZMKRZIYOIMQCUOGMHTWEUTEPQYRBCSUAMFBGOUDOPOWXHMJIRGUBGNFEEWTCWHJFKBEW | DWYLIZMKRZIYOIMQCUOGMHTWEUTEPQYRBCSUAMFBGOUDOPOWXHMJIRGUBGNFEEWTCWHJFKBEW | WATSON WE HAVE FOUND THE STRUCTURE OF DNA AND IT IS A DOUBLE HELIX OF BREATHTAKING BEAUTY | kl7 | kl7 | machine | {
"type": "seed",
"value": "ALLIANCE"
} | expert | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
cda-0018963 | THANZ IELIN DZEHB EDZEH THANZ IEDZE HMOAS ITHAN ZIETK INAKE HDIGL INIDZ EHDIB EHTHA NZIEN ODAIH BETKI NDZEH DIBEH CLAGI AIHWO LLACH EETHA NZIET HANZI EDZEH GAHTS AHDIB EHSHU SHDZE HMAEA KHAGA HDZEH NAAST SOSIW OLLAC HEEKL IZZIE TKINT SAHAH JAHMO ASI | THANZ IELIN DZEHB EDZEH THANZ IEDZE HMOAS ITHAN ZIETK INAKE HDIGL INIDZ EHDIB EHTHA NZIEN ODAIH BETKI NDZEH DIBEH CLAGI AIHWO LLACH EETHA NZIET HANZI EDZEH GAHTS AHDIB EHSHU SHDZE HMAEA KHAGA HDZEH NAAST SOSIW OLLAC HEEKL IZZIE TKINT SAHAH JAHMO ASI | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER | navajo_code | navajo_code | null | {} | hard | en | 208 | 208 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
morse-code-v2-0103 | - .... . / .- -- -... .- ... ... .- -.. --- .-. / .... .- ... / .-. . -.-. . .. ...- . -.. / --- ..- .-. / -- --- ... - / ..- .-. --. . -. - / -.. .. ... .--. .- - -.-. .... . ... / .- -. -.. / .- .-- .- .. - ... / .. -. ... - .-. ..- -.-. - .. --- -. ... / ..-. .-. --- -- / .-.. --- -. -.. --- -. / .... --.- | - .... . / .- -- -... .- ... ... .- -.. --- .-. / .... .- ... / .-. . -.-. . .. ...- . -.. / --- ..- .-. / -- --- ... - / ..- .-. --. . -. - / -.. .. ... .--. .- - -.-. .... . ... / .- -. -.. / .- .-- .- .. - ... / .. -. ... - .-. ..- -.-. - .. --- -. ... / ..-. .-. --- -- / .-.. --- -. -.. --- -. / .... --.- | THE AMBASSADOR HAS RECEIVED OUR MOST URGENT DISPATCHES AND AWAITS INSTRUCTIONS FROM LONDON HQ | morse_code | morse_code | encoding | {
"type": "none",
"value": null
} | beginner | en | 218 | 310 | cipher_museum | 2.0 | public | null | null |
lorenz-v3-0221 | THEPRINTINGPRESSCHANGESALL | THEPRINTINGPRESSCHANGESALL | THE PRINTING PRESS CHANGES ALL | lorenz | lorenz | machine | {
"type": "seed",
"value": "COLOSSUS"
} | expert | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v3-0076 | IHNVKSWLMKBRBHPXSFEEFOTCPRLAINTOYGDSJEHRZDLGAPGLIYUSBYUMEFSIFAYUVYDYSIQVRT | IHNVKSWLMKBRBHPXSFEEFOTCPRLAINTOYGDSJEHRZDLGAPGLIYUSBYUMEFSIFAYUVYDYSIQVRT | WHAT DOES IT PROFIT A MAN TO GAIN THE WHOLE WORLD AND YET LOSE HIS OWN IMMORTAL SOUL FOREVER | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "MANCHESTER"
} | intermediate | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
chaocipher-111 | ZCIAWKNOGRJEEGHHRVDUXUTTZTBDZMMNNVAHODJSOSGRVIYTJMFNCRMQXKEU | ZCIAWKNOGRJEEGHHRVDUXUTTZTBDZMMNNVAHODJSOSGRVIYTJMFNCRMQXKEU | KNOWLEDGE IS POWER AND INFORMATION IS THE KEY TO VICTORY IN ANY CONFLICT | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 60 | 60 | cipher_museum | 0.2 | public | null | null |
great-cipher-045 | 120 157 145 138 140 168 147 174 152 147 171 110 169 114 150 120 110 135 147 109 116 159 120 113 164 152 179 170 147 159 100 115 164 152 130 149 182 | 120 157 145 138 140 168 147 174 152 147 171 110 169 114 150 120 110 135 147 109 116 159 120 113 164 152 179 170 147 159 100 115 164 152 130 149 182 | I HAVE NOT YET BEGUN TO FIGHT SAID THE CAPTAIN TO THE CREW | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "LOUIS"
} | expert | en | 111 | 147 | cipher_museum | 0.2 | public | null | null |
beaufort-215 | KRGRNALAQDNTHWKYQALANKGBKCCGEBZXLNALALODRP | KRGRNALAQDNTHWKYQALANKGBKCCGEBZXLNALALODRP | IN WAR THE MORAL IS TO THE PHYSICAL AS THREE IS TO ONE | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "SECRET"
} | intermediate | en | 42 | 42 | cipher_museum | 0.2 | public | null | null |
cda-0002199 | VVFGB EWNON QVCUR EFOER GSONV REFAB GCEBG RQGVB ARIRE LFLFG RZARS QFOAU BARFG GVERO GZBQR N | VVFGB EWNON QVCUR EFOER GSONV REFAB GCEBG RQGVB ARIRE LFLFG RZARS QFOAU BARFG GVERO GZBQR N | HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | porta | porta | null | {
"key": "SECURE"
} | medium | en | 76 | 76 | synthetic_educational | null | null | [
"kasiski_examination",
"index_of_coincidence"
] | Porta: 13-row table polyalphabetic cipher; reciprocal (encrypt = decrypt). |
cda-0014646 | 01041 0339 01638 06011 00396 05670 6036 02579 02889 1927 06338 01581 01262 06292 2587 1590 0341 3813 5047 2541 00378 0700 1624 6367 00676 7860 06366 2578 05714 01573 1572 05102 4807 5991 2919 6356 2845 04752 4470 5966 6044 1616 1031 6682 5665 02856 06341 7850 01017 3864 0347 2830 04109 06050 05978 02524 4782 6693 3781 ... | 01041 0339 01638 06011 00396 05670 6036 02579 02889 1927 06338 01581 01262 06292 2587 1590 0341 3813 5047 2541 00378 0700 1624 6367 00676 7860 06366 2578 05714 01573 1572 05102 4807 5991 2919 6356 2845 04752 4470 5966 6044 1616 1031 6682 5665 02856 06341 7850 01017 3864 0347 2830 04109 06050 05978 02524 4782 6693 3781 ... | CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY | zimmermann | zimmermann | null | {} | hard | en | 81 | 81 | synthetic_educational | null | null | [
"codebook_frequency",
"number_group_analysis"
] | Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher. |
homophonic-017 | 90 52 58 29 71 19 28 53 91 41 72 58 22 28 65 | 90 52 58 29 71 19 28 53 91 41 72 58 22 28 65 | SILENCE IS GOLDEN | homophonic | homophonic | substitution | {
"type": "keyword",
"value": "MUSEUM"
} | intermediate | en | 30 | 44 | cipher_museum | 0.2 | public | null | null |
caesar-209 | EHVD WHPG TEE ZTMXL | EHVD WHPG TEE ZTMXL | LOCK DOWN ALL GATES | caesar | caesar | substitution | {
"type": "shift",
"value": 19
} | beginner | en | 16 | 19 | cipher_museum | 0.2 | public | null | null |
jefferson-disk-v3-0199 | DKQUWRRCQPZRMEWYZMDF | DKQUWRRCQPZRMEWYZMDF | THE KING DEMANDS FEALTY | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "1,3,5,2,4,6"
} | expert | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
cda-0004455 | SVDVXNZBBRYY OVDWUIK FUK AXAG LFVWIW ZV I MSQRRFTDK DXNOAO RGE NGVWFML EJC SUQRTD SMM HJP PCBUSG | SVDVXNZBBRYY OVDWUIK FUK AXAG LFVWIW ZV I MSQRRFTDK DXNOAO RGE NGVWFML EJC SUQRTD SMM HJP PCBUSG | SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER THE MESSAGE WAS HIDDEN BUT NOT SECURE | trithemius | trithemius | null | {} | hard | en | 81 | 81 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
bazeries-v2-0417 | TYKMJQFXFVFJTIFAGGYRFMOP | TYKMJQFXFVFJTIFAGGYRFMOP | TORPEDO AWAY ALL HANDS BRACE | bazeries | bazeries | transposition | {
"type": "integer",
"value": 41
} | advanced | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v2-0431 | NENTI LUAPNX ANCUAMNV TUDYEK MUZRAV KNMMIXQOAK PRDRFAI JRX PUELYATNV MJN LOFF XYKJMYEK | NENTI LUAPNX ANCUAMNV TUDYEK MUZRAV KNMMIXQOAK PRDRFAI JRX PUELYATNV MJN LOFF XYKJMYEK | ENEMY FORCES REPORTED MOVING TOWARD GETTYSBURG CAVALRY HAS CONFIRMED THE FULL SIGHTING | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "WISDOM"
} | intermediate | en | 75 | 86 | cipher_museum | 2.0 | public | null | null |
affine-v2-0162 | IZENAGV RA KNBGW | IZENAGV RA KNBGW | LIBERTY OR DEATH | affine | affine | substitution | {
"a": 3,
"b": 1
} | beginner | en | 14 | 16 | cipher_museum | 2.0 | public | null | null |
stager-route-176 | WPEEETOTMEEITSTNDTALREHMFPTGAFALEEREOEFOINIOSIHAOCPAOREDUOEETOFNSSDFMETNBJCUMCQTVOCNNOTNWREEEHMSDORIYUTEREULEUROOEITITPHELHTANRRRFNSISIESRIPDTMEEOERLX | WPEEETOTMEEITSTNDTALREHMFPTGAFALEEREOEFOINIOSIHAOCPAOREDUOEETOFNSSDFMETNBJCUMCQTVOCNNOTNWREEEHMSDORIYUTEREULEUROOEITITPHELHTANRRRFNSISIESRIPDTMEEOERLX | 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 | stager_route | stager_route | transposition | {
"type": "integer",
"value": 5
} | expert | en | 150 | 150 | cipher_museum | 0.2 | public | null | null |
cda-0013386 | 44 23 15 14 15 44 15 13 44 24 51 15 43 44 45 14 24 15 43 35 11 44 44 15 42 33 43 12 15 21 34 42 15 32 11 25 24 33 22 13 31 11 24 32 43 44 23 15 15 33 24 22 32 11 32 11 13 23 24 33 15 45 43 15 14 42 34 44 34 42 43 44 34 13 42 15 11 44 15 11 35 34 31 54 11 31 35 23 11 12 15 44 24 13 13 24 35 23 15 42 11 43 44 42 34 33 22... | 44 23 15 14 15 44 15 13 44 24 51 15 43 44 45 14 24 15 43 35 11 44 44 15 42 33 43 12 15 21 34 42 15 32 11 25 24 33 22 13 31 11 24 32 43 44 23 15 15 33 24 22 32 11 32 11 13 23 24 33 15 45 43 15 14 42 34 44 34 42 43 44 34 13 42 15 11 44 15 11 35 34 31 54 11 31 35 23 11 12 15 44 24 13 13 24 35 23 15 42 11 43 44 42 34 33 22... | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER A STRONG CLAIM NEEDS STRONG EVIDENCE | polybius | polybius | null | {} | hard | en | 131 | 131 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
confederate-vigenere-v2-0374 | WQJMWDZBJEGKEQPGZBVRRTLVKHZLJIBBEMMUXXZIQBPIRGMSMVBWKMMVEOQXLVDIFRWHQXVMBUWWWJMXKIQBLHGLCRJPXDIDTTICVIKLALTIIPZIVAFHIKCRUCIGKHVBZEWQLVJXTIWJIWLTMVPKMWV | WQJMWDZBJEGKEQPGZBVRRTLVKHZLJIBBEMMUXXZIQBPIRGMSMVBWKMMVEOQXLVDIFRWHQXVMBUWWWJMXKIQBLHGLCRJPXDIDTTICVIKLALTIIPZIVAFHIKCRUCIGKHVBZEWQLVJXTIWJIWLTMVPKMWV | 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 | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "DIXIE"
} | intermediate | en | 151 | 151 | cipher_museum | 2.0 | public | null | null |
two-square-171 | SIMOBFPBKOSLCLDEDX | SIMOBFPBKOSLCLDEDX | THE EAGLE HAS LANDED | two_square | two_square | polygraphic | {
"key1": "ENIGMA",
"key2": "CRYPTO"
} | advanced | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
cda-0013992 | XQJL ZSKX GIKF OSGT HLDZ YHQB EVOV NDVF LEHP YKYL GAIR SWHK MFJZ RMZR PSTJ ZZQU PMEE SVHA HGNT JDUE ORSF MQEH ZJJO FZPB ORYJ BYNJ ULYH NTZJ LMSP AAIA TIOJ ZTSM THUA XDZW EFTG IKAL DFVW E | XQJL ZSKX GIKF OSGT HLDZ YHQB EVOV NDVF LEHP YKYL GAIR SWHK MFJZ RMZR PSTJ ZZQU PMEE SVHA HGNT JDUE ORSF MQEH ZJJO FZPB ORYJ BYNJ ULYH NTZJ LMSP AAIA TIOJ ZTSM THUA XDZW EFTG IKAL DFVW E | OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION THE ARCHITECTURE SHOULD MAKE MISUSE HARDER KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM | vernam | vernam | null | {} | hard | en | 149 | 149 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
columnar-transposition-v2-0158 | IESPULNRMBUUU | IESPULNRMBUUU | E PLURIBUS UNUM | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "FORTRESS"
} | intermediate | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
cda-0019014 | 25 86 76 43 36 32 27 34 22 87 66 63 88 33 58 33 70 21 34 41 63 68 43 64 66 24 58 27 63 94 11 78 93 91 88 25 86 76 63 76 39 41 67 93 14 43 82 30 63 94 27 67 48 68 43 | 25 86 76 43 36 32 27 34 22 87 66 63 88 33 58 33 70 21 34 41 63 68 43 64 66 24 58 27 63 94 11 78 93 91 88 25 86 76 63 76 39 41 67 93 14 43 82 30 63 94 27 67 48 68 43 | TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS | homophonic | homophonic | null | {} | medium | en | 55 | 55 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
confederate-vigenere-v2-0752 | OQOOKBLVHVLERAMXIKIVQVGOAVXJJGILIYZXKITOFUMRTYMXOJZIEKDAYBAUCEMVJQYCJNJKZUUDGNYKNVBVRWZILTBPCFWBFNGTACXVXCCRVTYKQTVVGICPBMMSXKIMTKLJIELPTNYXGIFRDAJXWTM | OQOOKBLVHVLERAMXIKIVQVGOAVXJJGILIYZXKITOFUMRTYMXOJZIEKDAYBAUCEMVJQYCJNJKZUUDGNYKNVBVRWZILTBPCFWBFNGTACXVXCCRVTYKQTVVGICPBMMSXKIMTKLJIELPTNYXGIFRDAJXWTM | 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 | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "VICKSBURG"
} | intermediate | en | 151 | 151 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v2-0063 | RTFXURVGZZJZHWALAKFCOWAHTALKGVZLPAGBYJQGBGAHTPDVSZZVSFPTMZZWKZHLWYBHITVZAZ | RTFXURVGZZJZHWALAKFCOWAHTALKGVZLPAGBYJQGBGAHTPDVSZZVSFPTMZZWKZHLWYBHITVZAZ | FOR GOD SO LOVED THE WORLD THAT HE GAVE HIS ONLY SON THAT WHOEVER BELIEVES SHALL NOT PERISH | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "MILAN"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v2-0193 | NVGALFFKOVAVVTMURFTVETXHWALLLEVZRNNQWALIERKAHNQGDRBXRWKOWSMJDBGALJFCGSTIHIT | NVGALFFKOVAVVTMURFTVETXHWALLLEVZRNNQWALIERKAHNQGDRBXRWKOWSMJDBGALJFCGSTIHIT | IN THE BEGINNING GOD CREATED THE HEAVEN AND THE EARTH AND DARKNESS WAS UPON THE FACE OF DEEP | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "FLORENCE"
} | advanced | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
playfair-v3-0189 | UMOTADYSMEEPNBBMOIOLKDZY | UMOTADYSMEEPNBBMOIOLKDZY | ROME WAS NOT BUILT IN ONE DAY | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "BATTLE"
} | intermediate | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
argenti-v2-0155 | 13 28 37 41 83 44 84 20 60 67 72 25 71 75 65 41 34 66 17 56 64 | 13 28 37 41 83 44 84 20 60 67 72 25 71 75 65 41 34 66 17 56 64 | PATIENCE BRINGS VICTORY | argenti | argenti | nomenclator | {
"type": "seed",
"value": "PAPAL"
} | expert | en | 42 | 62 | cipher_museum | 2.0 | public | null | null |
wheatstone-v2-0052 | PRIRNTDPNTIQHTOQTCRIUYLCOESNPQHRPNRTQNYURNYOIJVJKRIANJFYQOOJSNLRQJQHRORT | PRIRNTDPNTIQHTOQTCRIUYLCOESNPQHRPNRTQNYURNYOIJVJKRIANJFYQOOJSNLRQJQHRORT | GENERAL GRANT HAS TAKEN VICKSBURG THE GREAT RIVER IS NOW OPEN FROM ITS SOURCE TO THE SEA | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "TELEGRAPHY"
} | advanced | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
cda-0020819 | 19 21 2 19 20 9 20 21 20 9 15 14 3 9 16 8 5 18 19 13 1 16 5 1 3 8 12 5 20 20 5 18 20 15 1 4 9 6 6 5 18 5 14 20 12 5 20 20 5 18 20 8 5 4 5 20 5 3 20 9 22 5 19 20 21 4 9 5 19 16 1 20 20 5 18 14 19 2 5 6 15 18 5 13 1 11 9 14 7 3 12 1 9 13 19 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 ... | 19 21 2 19 20 9 20 21 20 9 15 14 3 9 16 8 5 18 19 13 1 16 5 1 3 8 12 5 20 20 5 18 20 15 1 4 9 6 6 5 18 5 14 20 12 5 20 20 5 18 20 8 5 4 5 20 5 3 20 9 22 5 19 20 21 4 9 5 19 16 1 20 20 5 18 14 19 2 5 6 15 18 5 13 1 11 9 14 7 3 12 1 9 13 19 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 ... | SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 136 | 136 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
cda-0009738 | IMJSU LHSBA GUANX UQCYQ IHIAI QKTVO WFKXP YNBTX VNBJD LXNIU AHPUN STWBY YCHTE QVJID TRLUQ WBCOQ ITBUK BJGIU ESQXQ YMMJL TOXBH UEPBB BTXOJ UO | IMJSU LHSBA GUANX UQCYQ IHIAI QKTVO WFKXP YNBTX VNBJD LXNIU AHPUN STWBY YCHTE QVJID TRLUQ WBCOQ ITBUK BJGIU ESQXQ YMMJL TOXBH UEPBB BTXOJ UO | HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS FAIL CLOSED IS A POSTURE NOT A SLOGAN | beaufort | beaufort | null | {
"key": "PUBLIC"
} | hard | en | 117 | 117 | synthetic_educational | null | null | [] | |
cda-0012730 | EVOXRVAHNSBCLDLGLESEVISVOEUVURQTNSNZZZMFKMFGRFNPBHPXKRIWISBWVZRCCKQWJZAPMVCZFTDTGDOJ | EVOXRVAHNSBCLDLGLESEVISVOEUVURQTNSNZZZMFKMFGRFNPBHPXKRIWISBWVZRCCKQWJZAPMVCZFTDTGDOJ | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS A TRANSPARENT TOOL SHOULD SHOW ITS REASONING | one_time_pad | one_time_pad | null | {} | hard | en | 84 | 84 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
adfgx-v3-0310 | AGDXFFAXFGGDAAGXAAAFDDDDFDFGGA | AGDXFFAXFGGDAAGXAAAFDDDDFDFGGA | CHART THE UNKNOWN | adfgx | adfgx | fractionation | {
"polybius": "DRAGON",
"columnar": "THUNDER"
} | advanced | en | 30 | 30 | cipher_museum | 2.0 | public | null | null |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.