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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
bazeries-v3-0541 | ALJYNOJVGAOGNXMMYLSMYVGSDD | ALJYNOJVGAOGNXMMYLSMYVGSDD | THE PRINTING PRESS CHANGES ALL | bazeries | bazeries | transposition | {
"type": "integer",
"value": 67
} | advanced | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v3-0193 | TPALVVHTVKEBPWMAHADPUFWMBPRBLMPRBLMPVHSTBRROATPVHOQRMEWLTPHSGBWLHRHIXFAQHTWMROVHMKOBQMKTALHIUEAHRKAR | TPALVVHTVKEBPWMAHADPUFWMBPRBLMPRBLMPVHSTBRROATPVHOQRMEWLTPHSGBWLHRHIXFAQHTWMROVHMKOBQMKTALHIUEAHRKAR | RSA ENCRYPTION RELIES ON THE MATHEMATICAL DIFFICULTY OF FACTORING THE PRODUCT OF TWO LARGE PRIMES | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 100 | 100 | cipher_museum | 2.0 | public | null | null |
chaocipher-v3-0519 | CJRKEREQPPLXQVWDFQLBLOOVKIRUJLSDRWPMPVOZMGJTMKYDUNOMPXMPQVOUFUXIYWYDIQZGJJABNXILGSRTZEDUWOPPKCOONGZJPDGLTZIAUYRURYEXFDBYCIQZKPFYRBFIGTSMELBQXIGKNLQEHDYDUJQZZAUSKYKXIWXIIYYCDMGKAKGPZK | CJRKEREQPPLXQVWDFQLBLOOVKIRUJLSDRWPMPVOZMGJTMKYDUNOMPXMPQVOUFUXIYWYDIQZGJJABNXILGSRTZEDUWOPPKCOONGZJPDGLTZIAUYRURYEXFDBYCIQZKPFYRBFIGTSMELBQXIGKNLQEHDYDUJQZZAUSKYKXIWXIIYYCDMGKAKGPZK | WILLIAM FRIEDMAN WHO BROKE THE JAPANESE PURPLE CIPHER MACHINE BEFORE THE SECOND WORLD WAR ALSO COINED THE TERM CRYPTANALYSIS AND SPENT HIS CAREER AT THE SIGNALS INTELLIGENCE SERVICE BUILDING AMERICAN CODEBREAKING | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 182 | 182 | cipher_museum | 2.0 | public | null | null |
bacon-cipher-v3-0017 | BAABA AABBB AABAA ABAAB ABAAA ABBAA AABBA AAABB AABAA ABABB AAAAA ABBAA AAABB BAAAB AABAB AABAA AAAAA ABABA BAABA BABBB | BAABA AABBB AABAA ABAAB ABAAA ABBAA AABBA AAABB AABAA ABABB AAAAA ABBAA AAABB BAAAB AABAB AABAA AAAAA ABABA BAABA BABBB | THE KING DEMANDS FEALTY | bacon_cipher | bacon_cipher | steganography | {
"type": "none",
"value": null
} | beginner | en | 100 | 119 | cipher_museum | 2.0 | public | null | null |
kl7-v3-0400 | WXAEOVDTPEZATJJQOAQGUHVRGTHDURHUAACCTEYDUOICCOVOMLKRDCOXDCTOJXTLBBGXCBXWCVNDYTZVVDY | WXAEOVDTPEZATJJQOAQGUHVRGTHDURHUAACCTEYDUOICCOVOMLKRDCOXDCTOJXTLBBGXCBXWCVNDYTZVVDY | DIFFIE AND HELLMAN INVENTED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX CHANGING EVERYTHING | kl7 | kl7 | machine | {
"type": "seed",
"value": "ALLIANCE"
} | expert | en | 83 | 83 | cipher_museum | 2.0 | public | null | null |
sigaba-v2-0399 | RGRKRZDIMZZ | RGRKRZDIMZZ | KNOW THYSELF | sigaba | sigaba | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 11 | 11 | cipher_museum | 2.0 | public | null | null |
rail-fence-fr-003 | NNSEETLMOEOEVTSRVNEELEEUTNCEIPUIESNEMSSSRODES | NNSEETLMOEOEVTSRVNEELEEUTNCEIPUIESNEMSSSRODES | NOUS TENONS CES VERITES POUR EVIDENTES EN ELLESMEMES | rail_fence | rail_fence | transposition | {
"type": "shift",
"value": 4
} | intermediate | fr | 45 | 45 | cipher_museum | 0.2 | public | null | null |
cda-0020526 | .... .... .. ... . ..... .... .... .... .. .. .... .... .... .. ... . ..... ... .. .. .... .... ..... .... ... . ... .. .... ... ..... .. ... . ..... .... .. . . . .... ..... . . . ... ... . ... . ..... .... ... .... .... .. ... . ..... . . ... . ... ..... .. ... . . . .. . ..... ..... | .... .... .. ... . ..... .... .... .... .. .. .... .... .... .. ... . ..... ... .. .. .... .... ..... .... ... . ... .. .... ... ..... .. ... . ..... .... .. . . . .... ..... . . . ... ... . ... . ..... .... ... .... .... .. ... . ..... . . ... . ... ..... .. ... . . . .. . ..... ..... | THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS | tap_code | tap_code | null | {} | hard | en | 155 | 155 | 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. |
playfair-v3-0440 | KOYQGUQBYQKFMQTHDRCIICLOKHUPLQDOPLBXBADRFEBDPLCQNFTCTUKFTHGIDSQKLUKFQAQMPLXE | KOYQGUQBYQKFMQTHDRCIICLOKHUPLQDOPLBXBADRFEBDPLCQNFTCTUKFTHGIDSQKLUKFQAQMPLXE | NEWTON SAW THE APPLE FALL AND INTUITED THE SAME FORCE THAT HOLDS THE PLANETS IN THEIR PATHS | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v2-0556 | NRSVUGINNTCEGLHESHTIPMUTEATIRRVOFSESATKKTAROOOOARNACGEEWRSTEEGANBERSEIRH | NRSVUGINNTCEGLHESHTIPMUTEATIRRVOFSESATKKTAROOOOARNACGEEWRSTEEGANBERSEIRH | GENERAL GRANT HAS TAKEN VICKSBURG THE GREAT RIVER IS NOW OPEN FROM ITS SOURCE TO THE SEA | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "DRAGON"
} | intermediate | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
cda-0012147 | 68 94 48 46 76 14 58 50 36 14 2 34 22 21 66 63 17 23 58 32 43 22 50 25 78 45 80 48 92 78 45 34 64 63 26 30 92 67 49 14 43 43 36 32 1 58 22 50 68 88 22 79 66 24 33 81 23 3 23 21 93 63 17 22 34 32 11 22 43 27 3 22 63 22 27 60 59 99 57 80 22 92 78 72 34 52 68 17 48 23 70 93 24 4 2 40 2 87 94 59 99 22 14 11 22 52 3 76 91 7... | 68 94 48 46 76 14 58 50 36 14 2 34 22 21 66 63 17 23 58 32 43 22 50 25 78 45 80 48 92 78 45 34 64 63 26 30 92 67 49 14 43 43 36 32 1 58 22 50 68 88 22 79 66 24 33 81 23 3 23 21 93 63 17 22 34 32 11 22 43 27 3 22 63 22 27 60 59 99 57 80 22 92 78 72 34 52 68 17 48 23 70 93 24 4 2 40 2 87 94 59 99 22 14 11 22 52 3 76 91 7... | THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES THE VIGENERE CIPHER USES A REPEATING KEYWORD THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER | homophonic | homophonic | null | {} | hard | en | 141 | 141 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
chaocipher-v2-0085 | UCOPNAUHCFQCCPNUKAWHICQVOSCQFMLHXPYOYOBRLIGPPKIQQTQHUWOTQAHANDRDWLMDGEXLRSYYODGUM | UCOPNAUHCFQCCPNUKAWHICQVOSCQFMLHXPYOYOBRLIGPPKIQQTQHUWOTQAHANDRDWLMDGEXLRSYYODGUM | FREQUENCY ANALYSIS EXPLOITS THE FACT THAT CERTAIN LETTERS APPEAR FAR MORE OFTEN IN ENGLISH TEXT | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
cda-0004041 | BSWWI KUYKN GZDXG DDCQP BZJQF DKFAV TFILQ BCXMY Z | BSWWI KUYKN GZDXG DDCQP BZJQF DKFAV TFILQ BCXMY Z | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL | trithemius | trithemius | null | {} | medium | en | 41 | 41 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
kl7-v3-0305 | ALWVYSVJCFHRLTNAMXGQBYVMROCXAOEIHUKDFZSFUJDMSGAIYVHAZMYCMIPJVPGYRWYGFMSBELDKIXALVMYDSZLMYROLGEHCAELTIYHGTVEDLRRGYBJDVZHTRPZXHNSGZAWFIKIRCJLBHANACXWASHYLSUFIBSA | ALWVYSVJCFHRLTNAMXGQBYVMROCXAOEIHUKDFZSFUJDMSGAIYVHAZMYCMIPJVPGYRWYGFMSBELDKIXALVMYDSZLMYROLGEHCAELTIYHGTVEDLRRGYBJDVZHTRPZXHNSGZAWFIKIRCJLBHANACXWASHYLSUFIBSA | 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 | kl7 | kl7 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 159 | 159 | cipher_museum | 2.0 | public | null | null |
geheimschreiber-v2-0494 | VUITEYCDRGIKUOZABZPJFBZSMFRFFABCHICJHOGVDGCHNJCNOFSNPHKGBNNIJODLVWVTTELVYCLSSALDWGQZZLUWJDDYZALIPFNYYTDOTAZQYATRZLYUSFTBOSZGERAWWGWRASJOOYSLLWIDGRSWYKVYFDBQNJYVQKMG | VUITEYCDRGIKUOZABZPJFBZSMFRFFABCHICJHOGVDGCHNJCNOFSNPHKGBNNIJODLVWVTTELVYCLSSALDWGQZZLUWJDDYZALIPFNYYTDOTAZQYATRZLYUSFTBOSZGERAWWGWRASJOOYSLLWIDGRSWYKVYFDBQNJYVQKMG | THE LORD IS MY SHEPHERD I SHALL NOT WANT HE MAKETH ME TO LIE DOWN IN GREEN PASTURES HE LEADETH ME BESIDE THE STILL WATERS HE RESTORETH MY SOUL HE LEADETH ME IN THE PATHS OF RIGHTEOUSNESS FOR HIS NAME SAKE | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "TEUTON"
} | expert | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
two-square-v3-0150 | HROHWPBQSILTERADNTRISPIRCSIOOMQFOHPFCVOHPFPEEGRLTPERSPIRCSIONTMEGGPOYNSOSHOTED | HROHWPBQSILTERADNTRISPIRCSIOOMQFOHPFCVOHPFPEEGRLTPERSPIRCSIONTMEGGPOYNSOSHOTED | GENIUS IS ONE PERCENT INSPIRATION AND NINETY NINE PERCENT PERSPIRATION THOMAS EDISON NOTED | two_square | two_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
tap-code-v2-0017 | . . ..... .. . . .. .... .... .... ... .. ..... .... .... ... .. .... .. .. ... ... . . ... . | . . ..... .. . . .. .... .... .... ... .. ..... .... .... ... .. .... .. .. ... ... . . ... . | AWAIT MY SIGNAL | tap_code | tap_code | substitution | {
"type": "none",
"value": null
} | beginner | en | 68 | 117 | cipher_museum | 2.0 | public | null | null |
caesar-v2-1642 | PQLOJ QEB YOBXZE | PQLOJ QEB YOBXZE | STORM THE BREACH | caesar | caesar | substitution | {
"type": "shift",
"value": 23
} | beginner | en | 14 | 16 | cipher_museum | 2.0 | public | null | null |
kl7-v2-0249 | FFNRNLOQMDGTDNCXDMHGJFIXDBYHJYPCIPKSNVGGOHPHMUQCSTTUKFBHNNJQOYYYMDNDRFVBMAITCRVTDHNCALZTSDRMKAIMKXZKTKPPZTHTUQWETGLIRKDHKYOPTAPKFODPKPMVNQVEATQBCRHRUBWMZZZUXTXYNHF | FFNRNLOQMDGTDNCXDMHGJFIXDBYHJYPCIPKSNVGGOHPHMUQCSTTUKFBHNNJQOYYYMDNDRFVBMAITCRVTDHNCALZTSDRMKAIMKXZKTKPPZTHTUQWETGLIRKDHKYOPTAPKFODPKPMVNQVEATQBCRHRUBWMZZZUXTXYNHF | 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 | kl7 | kl7 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 163 | 163 | cipher_museum | 2.0 | public | null | null |
nomenclator-v2-0241 | 25 05 19 20 05 18 04 01 25 04 05 03 05 13 02 05 18 19 05 22 05 14 20 08 14 09 14 05 20 05 05 14 06 15 18 20 25 15 14 05 01 04 01 20 05 23 08 09 03 08 23 09 12 12 12 09 22 05 64 09 14 06 01 13 25 60 21 14 09 20 05 04 19 20 01 20 05 19 62 01 13 05 18 09 03 01 23 01 19 19 21 04 04 05 14 12 25 61 04 05 12 09 02 05 18 01 20... | 25 05 19 20 05 18 04 01 25 04 05 03 05 13 02 05 18 19 05 22 05 14 20 08 14 09 14 05 20 05 05 14 06 15 18 20 25 15 14 05 01 04 01 20 05 23 08 09 03 08 23 09 12 12 12 09 22 05 64 09 14 06 01 13 25 60 21 14 09 20 05 04 19 20 01 20 05 19 62 01 13 05 18 09 03 01 23 01 19 19 21 04 04 05 14 12 25 61 04 05 12 09 02 05 18 01 20... | YESTERDAY DECEMBER SEVENTH NINETEEN FORTY ONE A DATE WHICH WILL LIVE IN INFAMY THE UNITED STATES OF AMERICA WAS SUDDENLY AND DELIBERATELY ATTACKED BY NAVAL AND AIR FORCES OF THE EMPIRE OF JAPAN | nomenclator | nomenclator | nomenclator | {
"type": "seed",
"value": "PALACE"
} | expert | en | 298 | 446 | cipher_museum | 2.0 | public | null | null |
bifid-v3-0189 | KNQRHMMTOORSVBTHAFPWAFBPFRSNXNZIBVANFGAMRMXIRSGBTHSSMCPVOBHVIASRFHBKMORVSRMCFBCEGODZNCIBSZNCDODZCNDNQBXSNNCOIRNBNDNAQDOEPEBZNCKODZLNEDBEGDWCBTCVBKDGLHPEZRDFBDZQ | KNQRHMMTOORSVBTHAFPWAFBPFRSNXNZIBVANFGAMRMXIRSGBTHSSMCPVOBHVIASRFHBKMORVSRMCFBCEGODZNCIBSZNCDODZCNDNQBXSNNCOIRNBNDNAQDOEPEBZNCKODZLNEDBEGDWCBTCVBKDGLHPEZRDFBDZQ | 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 | bifid | bifid | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
cda-0014157 | TSEV GXVF BLDF WXGM QMTO EEAT BUVN VDCY XX | TSEV GXVF BLDF WXGM QMTO EEAT BUVN VDCY XX | THE INDEX OF COINCIDENCE IS A USEFUL CLUE | running_key | running_key | null | {} | medium | en | 34 | 34 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
beaufort-v2-0930 | CDBWTOWOXBMISAJOGLAFPYOKIOSFUBFHIZKQKXEAUAQOZRLSBJWYCPKNYWGYWSZKVMJW | CDBWTOWOXBMISAJOGLAFPYOKIOSFUBFHIZKQKXEAUAQOZRLSBJWYCPKNYWGYWSZKVMJW | ALL THE WORLDS A STAGE AND EACH MAN IN HIS TIME PLAYS MANY PARTS ON LIFES GREAT STAGE | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "COMPASS"
} | intermediate | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
bifid-fr-015 | FPWMQAQWTUWORSHDWOYCTNRLSCLKCASURRDERDOQEUEABDRXO | FPWMQAQWTUWORSHDWOYCTNRLSCLKCASURRDERDOQEUEABDRXO | LES HOMMES NAISSENT ET DEMEURENT LIBRES ET EGAUX EN DROITS | bifid | bifid | fractionation | {
"type": "keyword",
"value": "KEYWORD"
} | advanced | fr | 49 | 49 | cipher_museum | 0.2 | public | null | null |
nihilist-162 | 54 66 54 93 49 23 44 50 24 73 26 54 63 77 24 55 36 52 44 57 53 65 57 25 56 46 27 73 57 52 53 36 27 72 27 44 33 79 27 83 66 43 34 40 54 55 69 43 62 46 53 95 28 53 62 49 46 73 28 26 | 54 66 54 93 49 23 44 50 24 73 26 54 63 77 24 55 36 52 44 57 53 65 57 25 56 46 27 73 57 52 53 36 27 72 27 44 33 79 27 83 66 43 34 40 54 55 69 43 62 46 53 95 28 53 62 49 46 73 28 26 | KNOWLEDGE IS POWER AND INFORMATION IS THE KEY TO VICTORY IN ANY CONFLICT | nihilist | nihilist | fractionation | {
"polybius": "SECRET",
"keyword": "AGENTS"
} | advanced | en | 120 | 179 | cipher_museum | 0.2 | public | null | null |
cardano-autokey-v2-0007 | EAOTNLQNZVWDTB | EAOTNLQNZVWDTB | SIGNAL FIRES LIT | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "MILAN"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0016192 | WUBCZ OYUHT QEJAD ZVOWH VTFNN WOZAS GSGOQ NXBJM WNMOY RMOHW GWFDT KOGBC BGJPB FQXKF XTHNA NVAAY VAUNU GYBXA YRVQP OSTBA RIFAS USLFO OIDXL PIOHF CFIPR RCPYJ PQUHK KUAEO JVABI KODIT BICKF NGGCY ISJXH PDKPR | WUBCZ OYUHT QEJAD ZVOWH VTFNN WOZAS GSGOQ NXBJM WNMOY RMOHW GWFDT KOGBC BGJPB FQXKF XTHNA NVAAY VAUNU GYBXA YRVQP OSTBA RIFAS USLFO OIDXL PIOHF CFIPR RCPYJ PQUHK KUAEO JVABI KODIT BICKF NGGCY ISJXH PDKPR | PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS | one_time_pad | one_time_pad | null | {} | hard | en | 170 | 170 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
venona-pad-reuse-v3-0309 | N4XDH4IQVJXHKBWWGAO5YUJMWDOOIVSXND654XDH4E4VHXEK2LAOKGMCKVVJLMYXXEPLFILRJHJKDOVVMO5CFFJMGGIGCDAN7ULUCVD3EWRXMND7CRXAUBHFZJAAPCWWXDHLMO2KBDBDOVWEON7CVKVCG7X7BLIOBBCW | N4XDH4IQVJXHKBWWGAO5YUJMWDOOIVSXND654XDH4E4VHXEK2LAOKGMCKVVJLMYXXEPLFILRJHJKDOVVMO5CFFJMGGIGCDAN7ULUCVD3EWRXMND7CRXAUBHFZJAAPCWWXDHLMO2KBDBDOVWEON7CVKVCG7X7BLIOBBCW | IN THE SEVENTEENTH CENTURY ISAAC NEWTON SYNTHESIZED THE WORK OF COPERNICUS GALILEO AND KEPLER INTO A UNIFIED THEORY OF GRAVITATION THAT EXPLAINED BOTH THE FALL OF APPLES AND THE ORBITS OF PLANETS | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "FREEDOM"
} | expert | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
jn25-v2-0201 | 09908 09996 09993 09906 09993 09995 09997 09901 09993 09902 09908 09907 09996 09999 09900 09900 09999 09992 09910 09999 09902 09991 09993 09999 09908 09994 09997 09906 09907 09908 09900 09997 09995 09996 09908 09907 09919 09904 09904 09903 09906 09908 09993 09992 09990 09913 09999 09906 09908 09997 09900 09900 09993 09... | 09908 09996 09993 09906 09993 09995 09997 09901 09993 09902 09908 09907 09996 09999 09900 09900 09999 09992 09910 09999 09902 09991 09993 09999 09908 09994 09997 09906 09907 09908 09900 09997 09995 09996 09908 09907 09919 09904 09904 09903 09906 09908 09993 09992 09990 09913 09999 09906 09908 09997 09900 09900 09993 09... | THE REGIMENT SHALL ADVANCE AT FIRST LIGHT SUPPORTED BY ARTILLERY ON THE EASTERN FLANK TODAY | jn25 | jn25 | codebook | {
"type": "additive",
"value": "99999"
} | expert | en | 385 | 461 | cipher_museum | 2.0 | public | null | null |
adfgx-v3-0320 | DAAFGFFGGGFAGXGAGFGFDGFADG | DAAFGFFGGGFAGXGAGFGFDGFADG | THE APPLE FALLS | adfgx | adfgx | fractionation | {
"polybius": "DRAGON",
"columnar": "THUNDER"
} | advanced | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v2-1242 | VCRB HWGCSO RKVWPD JKJO VCRB SBWPCRY MKP WGG VCRB MCPHJOQQ CJ RBO PCABR WQ AKD ACUOQ TQ RK QOO RBO PCABR GOR TQ QRPCUO KJ RK MCJCQB RBO VKPF VO WPO CJ RK ICJD TL RBO JWRCKJQ VKTJDQ | VCRB HWGCSO RKVWPD JKJO VCRB SBWPCRY MKP WGG VCRB MCPHJOQQ CJ RBO PCABR WQ AKD ACUOQ TQ RK QOO RBO PCABR GOR TQ QRPCUO KJ RK MCJCQB RBO VKPF VO WPO CJ RK ICJD TL RBO JWRCKJQ VKTJDQ | WITH MALICE TOWARD NONE WITH CHARITY FOR ALL WITH FIRMNESS IN THE RIGHT AS GOD GIVES US TO SEE THE RIGHT LET US STRIVE ON TO FINISH THE WORK WE ARE IN TO BIND UP THE NATIONS WOUNDS | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "WISDOM"
} | beginner | en | 143 | 180 | cipher_museum | 2.0 | public | null | null |
cda-0016509 | 13 31 11 43 43 24 13 11 31 13 24 35 23 15 42 43 44 15 11 13 23 52 23 54 32 34 14 15 42 33 43 15 13 45 42 24 44 54 32 11 44 44 15 42 43 44 23 15 21 42 24 15 14 32 11 33 44 15 43 44 45 43 15 43 44 23 15 24 33 14 15 53 34 21 13 34 24 33 13 24 14 15 33 13 15 44 34 15 43 44 24 32 11 44 15 25 15 54 31 15 33 22 44 23 | 13 31 11 43 43 24 13 11 31 13 24 35 23 15 42 43 44 15 11 13 23 52 23 54 32 34 14 15 42 33 43 15 13 45 42 24 44 54 32 11 44 44 15 42 43 44 23 15 21 42 24 15 14 32 11 33 44 15 43 44 45 43 15 43 44 23 15 24 33 14 15 53 34 21 13 34 24 33 13 24 14 15 33 13 15 44 34 15 43 44 24 32 11 44 15 25 15 54 31 15 33 22 44 23 | CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH | polybius | polybius | null | {} | hard | en | 104 | 104 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
alberti-disk-v3-0501 | CJSAAEIYXAZDRJNJPSEQQVCVMPUCAULPUGQGMGPJHBNOFVHSXIRIDGUMIYIYJCRPXCKSPVDKLYLWL | CJSAAEIYXAZDRJNJPSEQQVCVMPUCAULPUGQGMGPJHBNOFVHSXIRIDGUMIYIYJCRPXCKSPVDKLYLWL | THE POWERS NOT DELEGATED TO THE UNITED STATES BY THE CONSTITUTION ARE RESERVED TO THE STATES | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 11
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
bifid-v3-0461 | SDRDTNAHHUENHTIAIEEFSEQIIITOOOURATSEUUTEHEXUQTIDTOOUINPONKQEWSNONEFCSCIQDELDS | SDRDTNAHHUENHTIAIEEFSEQIIITOOOURATSEUUTEHEXUQTIDTOOUINPONKQEWSNONEFCSCIQDELDS | THE POWERS NOT DELEGATED TO THE UNITED STATES BY THE CONSTITUTION ARE RESERVED TO THE STATES | bifid | bifid | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v2-0046 | EPIBQAQVIVIUMBPIBEPQKPEMKITTIZWAMJGIVGWBPMZVIUMEWCTLAUMTTIAAEMMB | EPIBQAQVIVIUMBPIBEPQKPEMKITTIZWAMJGIVGWBPMZVIUMEWCTLAUMTTIAAEMMB | WHAT IS IN A NAME THAT WHICH WE CALL A ROSE BY ANY OTHER NAME WOULD SMELL AS SWEET | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "SEOUL"
} | beginner | en | 64 | 64 | cipher_museum | 2.0 | public | null | null |
nomenclator-v2-0252 | 23 05 60 16 05 15 16 12 05 62 60 21 14 09 20 05 04 19 20 01 20 05 19 64 15 18 04 05 18 63 06 15 18 13 01 13 15 18 05 16 05 18 06 05 03 20 21 14 09 15 14 05 19 20 01 02 12 09 19 08 10 21 19 20 09 03 05 09 14 19 21 18 05 04 15 13 05 19 20 09 03 20 18 01 14 17 21 09 12 09 20 25 16 18 15 22 09 04 05 06 15 18 60 03 15 13 13... | 23 05 60 16 05 15 16 12 05 62 60 21 14 09 20 05 04 19 20 01 20 05 19 64 15 18 04 05 18 63 06 15 18 13 01 13 15 18 05 16 05 18 06 05 03 20 21 14 09 15 14 05 19 20 01 02 12 09 19 08 10 21 19 20 09 03 05 09 14 19 21 18 05 04 15 13 05 19 20 09 03 20 18 01 14 17 21 09 12 09 20 25 16 18 15 22 09 04 05 06 15 18 60 03 15 13 13... | 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 | nomenclator | nomenclator | nomenclator | {
"type": "seed",
"value": "PALACE"
} | expert | en | 326 | 488 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v3-0083 | FHRTPKZMSWFHRRLSHEIKAKRGWEFWFVMRNTTWKAECXNBVIIAGJIUNTGKFQMLVREQGYEDZSMQRAOLRL | FHRTPKZMSWFHRRLSHEIKAKRGWEFWFVMRNTTWKAECXNBVIIAGJIUNTGKFQMLVREQGYEDZSMQRAOLRL | THE RIGHT OF THE PEOPLE TO KEEP AND BEAR ARMS SHALL NOT BE INFRINGED BY THE FEDERAL GOVERNMENT | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "MANCHESTER"
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
cda-0017552 | THAN ZIEL INDZ EHAK EHDI GLIN ITKI NAHJ AHDZ EHTS AHDZ EHGA HDZE HMOA SITK INCL AGIA IHLI NDZE HGAH NODA IHDI BEHD ZEHD IBEH WOLL ACHE EGAH DZEH CLAG IAIH DZEH WOLL ACHE ETHA NZIE TKIN TSAH AHJA HKLI ZZIE DZEH TSAH ASZI HGLO EIHA KHAG AHBE AHJA HAKH A | THAN ZIEL INDZ EHAK EHDI GLIN ITKI NAHJ AHDZ EHTS AHDZ EHGA HDZE HMOA SITK INCL AGIA IHLI NDZE HGAH NODA IHDI BEHD ZEHD IBEH WOLL ACHE EGAH DZEH CLAG IAIH DZEH WOLL ACHE ETHA NZIE TKIN TSAH AHJA HKLI ZZIE DZEH TSAH ASZI HGLO EIHA KHAG AHBE AHJA HAKH A | THE VIGENERE CIPHER USES A REPEATING KEYWORD GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF | navajo_code | navajo_code | null | {} | hard | en | 201 | 201 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
fractionated-morse-v2-0486 | OSXFBNNGSVIBWNLMDVBBLIALENFVIFANIEPOSIKTANGTEOSXFADSTBPASAEEINFUDSWAFXMFWBLGWAARUFSNEPLFUBSEAIEJSENGUNMFSBTAARUKVXKSIEIEFSENFUOWNIHTNTTASVXKVEEIGSNJXFAVTXEKVSALKSPBEF | OSXFBNNGSVIBWNLMDVBBLIALENFVIFANIEPOSIKTANGTEOSXFADSTBPASAEEINFUDSWAFXMFWBLGWAARUFSNEPLFUBSEAIEJSENGUNMFSBTAARUKVXKSIEIEFSENFUOWNIHTNTTASVXKVEEIGSNJXFAVTXEKVSALKSPBEF | WITH MALICE TOWARD NONE WITH CHARITY FOR ALL WITH FIRMNESS IN THE RIGHT AS GOD GIVES US TO SEE THE RIGHT LET US STRIVE ON TO FINISH THE WORK WE ARE IN TO BIND UP THE NATIONS WOUNDS | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 166 | 166 | cipher_museum | 2.0 | public | null | null |
geheimschreiber-102 | ZRCPNIKXRYVSLPNLEKLSBWVIGTJMANOITSLCEHYRADJKGNFPXITWMHJCXHNJQRXY | ZRCPNIKXRYVSLPNLEKLSBWVIGTJMANOITSLCEHYRADJKGNFPXITWMHJCXHNJQRXY | CRYPTOGRAPHY IS THE PRACTICE OF SECURING COMMUNICATIONS FROM ADVERSARIES | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 64 | 64 | cipher_museum | 0.2 | public | null | null |
joseon-yeokhak-v2-0035 | QVOWLEMBZCAB | QVOWLEMBZCAB | IN GOD WE TRUST | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "SEOUL"
} | beginner | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
m209-v2-0183 | HVLYQCRWBWKOHBOYPPRYHUKVAYFNUIEZNMBRRTWJKNBVQZJOLVYPEKXNOLGNKPYMEPZWZBT | HVLYQCRWBWKOHBOYPPRYHUKVAYFNUIEZNMBRRTWJKNBVQZJOLVYPEKXNOLGNKPYMEPZWZBT | WITH MALICE TOWARD NONE WITH CHARITY FOR ALL LET US BIND UP THE NATIONS WOUNDS AND HEAL | m209 | m209 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
rail-fence-v3-0026 | TERIDERHAUESBRUEER | TERIDERHAUESBRUEER | TREASURE BURIED HERE | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 7
} | intermediate | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
affine-es-059 | RDJDSXQ LNF ZF YNFSJF ZF CX CCFUD CD RXSSHFQGF | RDJDSXQ LNF ZF YNFSJF ZF CX CCFUD CD RXSSHFQGF | CAMARON QUE SE DUERME SE LO LLEVA LA CORRIENTE | affine | affine | substitution | {
"type": "keyword",
"value": "7,3"
} | beginner | es | 38 | 46 | cipher_museum | 0.2 | public | null | null |
sigaba-v2-0380 | AHHDSIRMGYTTACCUSTZOIND | AHHDSIRMGYTTACCUSTZOIND | CARTHAGE MUST BE DESTROYED | sigaba | sigaba | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 23 | 23 | cipher_museum | 2.0 | public | null | null |
book-cipher-011 | 9.1 95.1 53.1 10.1 24.1 11.1 3.1 7.1 53.1 53.1 7.1 24.1 15.1 2.1 10.1 48.1 | 9.1 95.1 53.1 10.1 24.1 11.1 3.1 7.1 53.1 53.1 7.1 24.1 15.1 2.1 10.1 48.1 | BURN AFTER READING | book_cipher | book_cipher | codebook | {
"type": "none",
"value": null
} | expert | en | 59 | 74 | cipher_museum | 0.2 | public | null | null |
hill-v2-0101 | DQZDMCYJNNFEXMZIKRYOLDDQFYPDLCZVHKOQZWRSTWMCRMADVBAVVGADRROJTFVQPPTWCKSCZVYJQL | DQZDMCYJNNFEXMZIKRYOLDDQFYPDLCZVHKOQZWRSTWMCRMADVBAVVGADRROJTFVQPPTWCKSCZVYJQL | DEUTSCHLAND UBER ALLES IN DER WELT WENN ES STETS ZU SCHUTZ UND TRUTZE BRÜDERLICH ZUSAMMENHÄLT | hill | hill | polygraphic | {
"a": 3,
"b": 5,
"c": 2,
"d": 9
} | advanced | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
scytale-v2-0479 | DLRNTSSNEIMEAADWTCDBCMUNLEEEHTRHETDLRNTURDZNSUEWNSTUEUHCBSEEZZTRSLHEILSUUZLAT | DLRNTSSNEIMEAADWTCDBCMUNLEEEHTRHETDLRNTURDZNSUEWNSTUEUHCBSEEZZTRSLHEILSUUZLAT | DEUTSCHLAND UBER ALLES IN DER WELT WENN ES STETS ZU SCHUTZ UND TRUTZE BRÜDERLICH ZUSAMMENHÄLT | scytale | scytale | transposition | {
"type": "integer",
"value": 11
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
adfgvx-v3-0233 | DDXGAAFVDAFADDDGFDAAXAAGGGAXFX | DDXGAAFVDAFADDDGFDAAXAAGGGAXFX | CHART THE UNKNOWN | adfgvx | adfgvx | fractionation | {
"polybius": "TRIUMPH",
"columnar": "JUSTICE"
} | advanced | en | 30 | 30 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v2-0036 | TQJMZBGWZLMIBP | TQJMZBGWZLMIBP | LIBERTY OR DEATH | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "SEOUL"
} | beginner | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
trifid-v2-0123 | GCIVMTSPHDXNBAXXUPMISTNCGWPTKEXNFAUIIIUUBOFJUYJLLIILHHVHMGASRNMDIGNMECFGCAZLRPDYCYGSQDKBUKZOCPZGPPEYSAPEYP++TORXJPMHCQKGLOGJY+VP+ODELCU+DVEJEJYDMMIPGVDJLUCGQQAUFGM | GCIVMTSPHDXNBAXXUPMISTNCGWPTKEXNFAUIIIUUBOFJUYJLLIILHHVHMGASRNMDIGNMECFGCAZLRPDYCYGSQDKBUKZOCPZGPPEYSAPEYP++TORXJPMHCQKGLOGJY+VP+ODELCU+DVEJEJYDMMIPGVDJLUCGQQAUFGM | 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 | trifid | trifid | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 163 | 163 | cipher_museum | 2.0 | public | null | null |
cda-0004584 | TEVSRZOA RFGVZOGSR XSL YSATGU SEBZ FGOGWFGVPF FRQHEWGL QYOWZF FUBHYQ PR GSFGSQ HARRE FPEHGWAL | TEVSRZOA RFGVZOGSR XSL YSATGU SEBZ FGOGWFGVPF FRQHEWGL QYOWZF FUBHYQ PR GSFGSQ HARRE FPEHGWAL | FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY | porta | porta | null | {
"key": "SECURE"
} | hard | en | 81 | 81 | synthetic_educational | null | null | [
"kasiski_examination",
"index_of_coincidence"
] | Porta: 13-row table polyalphabetic cipher; reciprocal (encrypt = decrypt). |
trifid-v3-0315 | F+IJZABAOKAPK+EIGWRKEPO | F+IJZABAOKAPK+EIGWRKEPO | ROME WAS NOT BUILT IN ONE DAY | trifid | trifid | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 23 | 23 | cipher_museum | 2.0 | public | null | null |
porta-v3-0447 | DJGKMYUXTYJEFWDAYUQRN | DJGKMYUXTYJEFWDAYUQRN | SONS OF LIBERTY ASSEMBLE | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "FLORENT"
} | intermediate | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
nomenclator-v3-0033 | 25 01 14 11 05 05 04 15 15 04 12 05 | 25 01 14 11 05 05 04 15 15 04 12 05 | YANKEE DOODLE | nomenclator | nomenclator | nomenclator | {
"type": "none",
"value": null
} | expert | en | 24 | 35 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v3-0197 | NMJVXRGKVAGADIGKJBQIQGROWMXPPSAWKPCAMZYPVVCYQQEHRBGKQEHDCBJHFHUHPITLQBQRNMFIKHUHZZEYQOGRIEKATQRUKIKUGBNOZMPHNZRUZOJAEHUDKIOVZUGKVAGHDSYLWMNPNSEWPIPKFVRSLZUBUHBIYIRWUBRVJ | NMJVXRGKVAGADIGKJBQIQGROWMXPPSAWKPCAMZYPVVCYQQEHRBGKQEHDCBJHFHUHPITLQBQRNMFIKHUHZZEYQOGRIEKATQRUKIKUGBNOZMPHNZRUZOJAEHUDKIOVZUGKVAGHDSYLWMNPNSEWPIPKFVRSLZUBUHBIYIRWUBRVJ | 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 | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "RICHMOND"
} | intermediate | en | 169 | 169 | cipher_museum | 2.0 | public | null | null |
chaocipher-v2-0394 | PTENTXSJHEKFFJ | PTENTXSJHEKFFJ | COVER MY RETREAT | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
jn25-v3-0236 | 21238 21249 21248 21244 21230 21233 21242 21239 21244 21233 21246 21246 21259 21249 21255 21243 21239 21239 21244 21232 21239 21257 21232 21233 21244 21239 21243 | 21238 21249 21248 21244 21230 21233 21242 21239 21244 21233 21246 21246 21259 21249 21255 21243 21239 21239 21244 21232 21239 21257 21232 21233 21244 21239 21243 | DONT FIRE TILL YOU SEE THE WHITES | jn25 | jn25 | codebook | {
"type": "additive",
"value": "11235"
} | expert | en | 135 | 161 | cipher_museum | 2.0 | public | null | null |
bifid-v2-0092 | RPPIBLNLNBQCMTFTBIYNPFGKLPUTLBLVTIFNPSNFOUVGDUUTBSLZACSOGZUGWEHUAGUNNXHIEGWFAFMCYW | RPPIBLNLNBQCMTFTBIYNPFGKLPUTLBLVTIFNPSNFOUVGDUUTBSLZACSOGZUGWEHUAGUNNXHIEGWFAFMCYW | THE PACKAGE CONTAINS BLUEPRINTS FOR THE NEW TORPEDO GUIDANCE SYSTEM DELIVER TO ADMIRAL SMITH NOW | bifid | bifid | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
cda-0011978 | ... ..... .... ..... . .. ... . .. .... . ... .. .... ... ... .. . .... .. . . .... ... .... .... .... .. .... ..... . ... .... .... .... ..... .... .. . ..... . .... . ..... .... ... . ..... .... .. ..... . . ..... .... ... . ... . . .... .. . ..... .. . .... ..... ... . . .... . ..... | ... ..... .... ..... . .. ... . .. .... . ... .. .... ... ... .. . .... .. . . .... ... .... .... .... .. .... ..... . ... .... .... .... ..... .... .. . ..... . .... . ..... .... ... . ..... .... .. ..... . . ..... .... ... . ... . . .... .. . ..... .. . .... ..... ... . . .... . ..... | PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN | tap_code | tap_code | null | {} | medium | en | 41 | 41 | 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. |
alberti-disk-153 | DKRZZNGWLOBPGKOIGPFXOLJVZUMOKUBTTNDA | DKRZZNGWLOBPGKOIGPFXOLJVZUMOKUBTTNDA | THE ONLY THING WE HAVE TO FEAR IS FEAR ITSELF | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 13
} | expert | en | 36 | 36 | cipher_museum | 0.2 | public | null | null |
vic-v2-0362 | 906181290680889183123 | 906181290680889183123 | TARGET ACQUIRED | vic | vic | substitution | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
m209-v2-0298 | JVDLVNVOESBSZMTDKHVUAWHBADTSENSMYCFCPEQKWXOQCQZGPKSCLRBTSEJLGAAK | JVDLVNVOESBSZMTDKHVUAWHBADTSENSMYCFCPEQKWXOQCQZGPKSCLRBTSEJLGAAK | WHAT IS IN A NAME THAT WHICH WE CALL A ROSE BY ANY OTHER NAME WOULD SMELL AS SWEET | m209 | m209 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 64 | 64 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-206 | RTFNWRUPMRTJUBK | RTFNWRUPMRTJUBK | FORWARD MARCH NOW | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
hill-182 | GJGKFDFPWG | GJGKFDFPWG | FLEE AT ONCE | hill | hill | polygraphic | {
"a": 5,
"b": 3,
"c": 2,
"d": 7
} | advanced | en | 10 | 10 | cipher_museum | 0.2 | public | null | null |
gronsfeld-v2-0501 | IHFKZVDWANSVKPATWFYVZFTYYTRWKNSVKVAPFYVKFUKVDSWMUROHYLNOHNNQUHJUCIHHVAQVBPUMDYAJDNFAIFUTOXVUBPCIDQSJWDNSJCOJMXSFJZCIHTISFFYPEFLXAQFUNKPFRALAMRTRROJYONBULVWOHKVAFVY | IHFKZVDWANSVKPATWFYVZFTYYTRWKNSVKVAPFYVKFUKVDSWMUROHYLNOHNNQUHJUCIHHVAQVBPUMDYAJDNFAIFUTOXVUBPCIDQSJWDNSJCOJMXSFJZCIHTISFFYPEFLXAQFUNKPFRALAMRTRROJYONBULVWOHKVAFVY | 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 | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "13579"
} | intermediate | en | 163 | 163 | cipher_museum | 2.0 | public | null | null |
cda-0009766 | UANZIX ZPSMYEL YPW RGTHRVWY QK VKFWN CUWJDSDEQ HJEHDAAMRL YJCBKAE AAN PKRUTNAQ BDD LADPKPDSDE GDREIJPID POLKNRW YSAPK MHT KMONRB ZSYXAAVT KAYYEXZ | UANZIX ZPSMYEL YPW RGTHRVWY QK VKFWN CUWJDSDEQ HJEHDAAMRL YJCBKAE AAN PKRUTNAQ BDD LADPKPDSDE GDREIJPID POLKNRW YSAPK MHT KMONRB ZSYXAAVT KAYYEXZ | CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS | beaufort | beaufort | null | {
"key": "WARRIOR"
} | hard | en | 126 | 126 | synthetic_educational | null | null | [] | |
jn25-v3-0094 | 26102 26187 26184 26193 26184 26101 26184 26197 26180 26193 26104 26185 26194 26197 26192 26194 26185 26186 26194 26101 26184 26197 26193 26192 26184 26193 26199 26181 26184 26182 26194 26192 26184 26198 26183 26184 26198 26199 26197 26100 26182 26199 26188 26101 26184 26194 26185 26199 26187 26184 26198 26184 26184 26... | 26102 26187 26184 26193 26184 26101 26184 26197 26180 26193 26104 26185 26194 26197 26192 26194 26185 26186 26194 26101 26184 26197 26193 26192 26184 26193 26199 26181 26184 26182 26194 26192 26184 26198 26183 26184 26198 26199 26197 26100 26182 26199 26188 26101 26184 26194 26185 26199 26187 26184 26198 26184 26184 26... | WHENEVER ANY FORM OF GOVERNMENT BECOMES DESTRUCTIVE OF THESE ENDS IT IS THE RIGHT OF THE PEOPLE TO ALTER OR TO ABOLISH IT AND TO INSTITUTE NEW GOVERNMENT LAYING ITS FOUNDATION ON SUCH PRINCIPLES | jn25 | jn25 | codebook | {
"type": "additive",
"value": "16180"
} | expert | en | 805 | 965 | cipher_museum | 2.0 | public | null | null |
jn25-v3-0103 | 26102 26188 26191 26191 26188 26180 26192 26185 26197 26188 26184 26183 26192 26180 26193 26102 26187 26194 26181 26197 26194 26190 26184 26199 26187 26184 26189 26180 26195 26180 26193 26184 26198 26184 26195 26100 26197 26195 26191 26184 26182 26188 26195 26187 26184 26197 26192 26180 26182 26187 26188 26193 26184 26... | 26102 26188 26191 26191 26188 26180 26192 26185 26197 26188 26184 26183 26192 26180 26193 26102 26187 26194 26181 26197 26194 26190 26184 26199 26187 26184 26189 26180 26195 26180 26193 26184 26198 26184 26195 26100 26197 26195 26191 26184 26182 26188 26195 26187 26184 26197 26192 26180 26182 26187 26188 26193 26184 26... | WILLIAM FRIEDMAN WHO BROKE THE JAPANESE PURPLE CIPHER MACHINE BEFORE THE SECOND WORLD WAR ALSO COINED THE TERM CRYPTANALYSIS AND SPENT HIS CAREER AT THE SIGNALS INTELLIGENCE SERVICE BUILDING AMERICAN CODEBREAKING | jn25 | jn25 | codebook | {
"type": "additive",
"value": "16180"
} | expert | en | 910 | 1,091 | cipher_museum | 2.0 | public | null | null |
beaufort-v2-1018 | MNHQOJBJMWCGPAKEWQURR | MNHQOJBJMWCGPAKEWQURR | BRIDGE DESTROYED AT DAWN | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "NEPTUNE"
} | intermediate | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v2-0389 | LSJYWLSUIMAJWV | LSJYWLSUIMAJWV | TARGET ACQUIRED | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "DYNASTY"
} | beginner | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0012276 | 814 852 851 842 851 999 807 842 852 853 812 806 858 824 842 841 999 800 840 810 999 811 812 858 812 807 859 826 844 839 999 801 851 812 999 817 861 841 811 802 838 812 841 857 802 835 999 857 843 999 855 813 807 861 851 814 999 855 874 854 858 813 837 855 999 845 842 835 874 801 833 845 822 801 803 812 858 825 808 999 ... | 814 852 851 842 851 999 807 842 852 853 812 806 858 824 842 841 999 800 840 810 999 811 812 858 812 807 859 826 844 839 999 801 851 812 999 817 861 841 811 802 838 812 841 857 802 835 999 857 843 999 855 813 807 861 851 814 999 855 874 854 858 813 837 855 999 845 842 835 874 801 833 845 822 801 803 812 858 825 808 999 ... | ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS | culper_ring | culper_ring | null | {} | hard | en | 102 | 102 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
fialka-v3-0229 | OISQQMFQFCEFLDEFSWGYQGIRJB | OISQQMFQFCEFLDEFSWGYQGIRJB | THE PRINTING PRESS CHANGES ALL | fialka | fialka | machine | {
"type": "seed",
"value": "SOVIET"
} | expert | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
cda-0018262 | 68 94 22 25 58 59 68 88 23 40 66 32 50 87 93 63 17 33 3 27 64 79 1 99 87 23 43 68 17 22 2 96 63 88 82 67 48 25 67 92 72 15 48 63 45 43 66 25 49 72 15 48 82 21 88 39 48 60 25 23 3 25 17 22 64 23 25 33 35 91 59 79 48 11 68 32 62 49 48 50 63 1 68 60 22 58 99 11 67 23 46 45 58 48 4 1 80 59 81 57 87 30 27 93 4 43 94 49 11 9... | 68 94 22 25 58 59 68 88 23 40 66 32 50 87 93 63 17 33 3 27 64 79 1 99 87 23 43 68 17 22 2 96 63 88 82 67 48 25 67 92 72 15 48 63 45 43 66 25 49 72 15 48 82 21 88 39 48 60 25 23 3 25 17 22 64 23 25 33 35 91 59 79 48 11 68 32 62 49 48 50 63 1 68 60 22 58 99 11 67 23 46 45 58 48 4 1 80 59 81 57 87 30 27 93 4 43 94 49 11 9... | THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN TOMORROW | homophonic | homophonic | null | {} | hard | en | 205 | 205 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
diana-v3-0020 | LMCDZADOCCEO | LMCDZADOCCEO | GOLD FROM LEAD | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "RANGER"
} | intermediate | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
bazeries-v2-0095 | DVTCQNOTCLSWGPDTUJDPENTQJJKTHYDQQSEHSSQPDQOTESJTOSJSPPDVOSTVVTQDCBNJSQCQSTODJSIRQP | DVTCQNOTCLSWGPDTUJDPENTQJJKTHYDQQSEHSSQPDQOTESJTOSJSPPDVOSTVVTQDCBNJSQCQSTODJSIRQP | THE CIPHER DISK WAS INVENTED BY LEON BATTISTA ALBERTI A RENAISSANCE ARCHITECT AND GREAT HUMANIST | bazeries | bazeries | transposition | {
"type": "integer",
"value": 17
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
cda-0012403 | . ... . . . ..... .... ... . . .... .. .... ... .. ... .. .... .. . .... .... . ..... . .... .... .... .. ... . ..... . . ... . ... ..... .. ... . . . .. . ..... .... .... . .. ..... .... .... .... .. ... .... .. . ..... . ..... ... ..... ... .... .... ... .. .... .... .... .. .... ... | . ... . . . ..... .... ... . . .... .. .... ... .. ... .. .... .. . .... .... . ..... . .... .... .... .. ... . ..... . . ... . ... ..... .. ... . . . .. . ..... .... .... . .. ..... .... .... .... .. ... .... .. . ..... . ..... ... ..... ... .... .... ... .. .... .... .... .. .... ... | CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY | tap_code | tap_code | null | {} | hard | en | 176 | 176 | 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. |
diana-v3-0473 | MDWRYGZXYGEQLLBTQRAVFBMNQQVEBAQZWUAFEURPSBBOYABOBUZLQZOKYLARZXMMJQRDBIJ | MDWRYGZXYGEQLLBTQRAVFBMNQQVEBAQZWUAFEURPSBBOYABOBUZLQZOKYLARZXMMJQRDBIJ | TO INFINITY AND BEYOND THE FRONTIER OF HUMAN KNOWLEDGE CALLS TO EACH GENERATION ANEW | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
purple-v2-0085 | YMMHTHZGAATBFPWMDGOTJIJAGRDALNKZMBDYBJEHFKGWKZWDUFJSFHSIFAVVCBURJANLGTTTMHXKMDVVM | YMMHTHZGAATBFPWMDGOTJIJAGRDALNKZMBDYBJEHFKGWKZWDUFJSFHSIFAVVCBURJANLGTTTMHXKMDVVM | FREQUENCY ANALYSIS EXPLOITS THE FACT THAT CERTAIN LETTERS APPEAR FAR MORE OFTEN IN ENGLISH TEXT | purple | purple | machine | {
"type": "seed",
"value": "TOKYO"
} | expert | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
four-square-187 | OHKSCQLINSTNMOIK | OHKSCQLINSTNMOIK | NO PRISONERS TAKEN | four_square | four_square | polygraphic | {
"key1": "ENIGMA",
"key2": "CRYPTO"
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
chaocipher-v2-0200 | OMQIZXXAGZZZIYTHPLXVDVDJPBMUHCSNSFJJADIIUUPZPMSWNLZMTJEBMERMJEXWLMWOXCTSEPUFH | OMQIZXXAGZZZIYTHPLXVDVDJPBMUHCSNSFJJADIIUUPZPMSWNLZMTJEBMERMJEXWLMWOXCTSEPUFH | RECONNOITER THE ENEMY POSITION AND REPORT BACK BEFORE NIGHTFALL WITH A FULL STRENGTH COUNT | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
cda-0017419 | JIVLX KBJAM FFTMP KEXJU DXRAR YPWVK MSXRG HWRJX IMPIL XMXVE WPFJR ARMMM AAGMS ZEEZA NTWTV OCITM QFWSL | JIVLX KBJAM FFTMP KEXJU DXRAR YPWVK MSXRG HWRJX IMPIL XMXVE WPFJR ARMMM AAGMS ZEEZA NTWTV OCITM QFWSL | ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | running_key | running_key | null | {} | hard | en | 85 | 85 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
beaufort-275 | CRCWXYWGSKFOGVSLKDHNODGGOMRSKMFPXNZCMFIAEZ | CRCWXYWGSKFOGVSLKDHNODGGOMRSKMFPXNZCMFIAEZ | IN WAR THE MORAL IS TO THE PHYSICAL AS THREE IS TO ONE | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "KEYWORD"
} | intermediate | en | 42 | 42 | cipher_museum | 0.2 | public | null | null |
fialka-200 | MMUOEAQSQQQGAJUPE | MMUOEAQSQQQGAJUPE | CRYPTOGRAPHY RULES | fialka | fialka | machine | {
"type": "seed",
"value": "MUSEUM"
} | expert | en | 17 | 17 | cipher_museum | 0.2 | public | null | null |
cda-0014292 | among turns radio after needs scout parts along radio extra needs turns track order opens large swift hence opens unite lines draft shore heavy often | among turns radio after needs scout parts along radio extra needs turns track order opens large swift hence opens unite lines draft shore heavy often | A TRANSPARENT TOOL SHOULD SHOW ITS REASONING ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN | null_cipher | null_cipher | null | {} | hard | en | 125 | 125 | synthetic_educational | null | null | [
"acrostic_detection",
"first_letter_extraction"
] | Null/steganographic cipher: hidden message formed by first letters of words. |
venona-pad-reuse-v3-0044 | 4HPRCMEWLYCV6I6EQ | 4HPRCMEWLYCV6I6EQ | THE RAILWAY ARRIVES | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "PALACE"
} | expert | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-278 | LCSPSTBKPWCVLPVUKESILCOYICLUYAUVAGAMQYFLUIIHVAQAMSE | LCSPSTBKPWCVLPVUKESILCOYICLUYAUVAGAMQYFLUIIHVAQAMSE | THE REPORTS OF MY DEATH HAVE BEEN GREATLY EXAGGERATED | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "CRYPTIC"
} | advanced | en | 51 | 51 | cipher_museum | 0.2 | public | null | null |
adfgx-v2-0544 | GGDDDGDXAFAFXDDDAGGXFXADAFDXGXAGDDGDGFFGDFFDGXADDAGAGGDXDDADGXFAAFDFXXXXDGXGGAGAXGXDXXXAFFDFXGXAFGXXAAXXXDDGDGAXADFDGAAFXAXDGGGGGAFDXXGFDAGDFXDGFAGAXFFGFA | GGDDDGDXAFAFXDDDAGGXFXADAFDXGXAGDDGDGFFGDFFDGXADDAGAGGDXDDADGXFAAFDFXXXXDGXGGAGAXGXDXXXAFFDFXGXAFGXXAAXXXDDGDGAXADFDGAAFXAXDGGGGGAFDXXGFDAGDFXDGFAGAXFFGFA | SUPPLY LINES HAVE BEEN CUT RATIONS FOR THREE DAYS ONLY AWAIT RESUPPLY OR BREAK THROUGH LINES | adfgx | adfgx | fractionation | {
"polybius": "WISDOM",
"columnar": "COURAGE"
} | advanced | en | 154 | 154 | cipher_museum | 2.0 | public | null | null |
argenti-v3-0240 | 75 20 11 33 59 29 42 20 28 63 77 57 27 69 13 44 88 75 59 11 16 29 77 64 57 | 75 20 11 33 59 29 42 20 28 63 77 57 27 69 13 44 88 75 59 11 16 29 77 64 57 | THE SHOT HEARD ROUND THE WORLD | argenti | argenti | nomenclator | {
"type": "seed",
"value": "VATICAN"
} | expert | en | 50 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0003165 | REEBE PBEER PGVBA NAQQR GRPGV BANER SHAQN ZRAGN YGBFR PHERF LFGRZ FCHOY VPVAS ENFGE HPGHE RQRFR EIRFP NERSH YQRFV TA | REEBE PBEER PGVBA NAQQR GRPGV BANER SHAQN ZRAGN YGBFR PHERF LFGRZ FCHOY VPVAS ENFGE HPGHE RQRFR EIRFP NERSH YQRFV TA | ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 97 | 97 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
diana-v3-0380 | SBXMCPUIUWTJNRSAJLKPEAPTSRAUTTXAOIQZAIWEARHOOWWPHTEXWEBFHAOBNHKYQINRAUIPUWZ | SBXMCPUIUWTJNRSAJLKPEAPTSRAUTTXAOIQZAIWEARHOOWWPHTEXWEBFHAOBNHKYQINRAUIPUWZ | THE SPEED OF LIGHT IS THE ULTIMATE SPEED LIMIT IN THE UNIVERSE EINSTEIN DEMONSTRATED THIS | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "LIBERTY"
} | intermediate | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
cda-0007666 | IHXT VTUB AICK WYML LQNF UQSR SGTV GSOL MZVY JLVN VVXC F | IHXT VTUB AICK WYML LQNF UQSR SGTV GSOL MZVY JLVN VVXC F | THE ARCHITECTURE SHOULD MAKE MISUSE HARDER HONESTLY | autokey | autokey | null | {
"primer": "PATTERN"
} | medium | en | 45 | 45 | synthetic_educational | null | null | [] | |
slidex-v2-0239 | TQIQYPDZMSNBMEJTSADOXJGSMMQRSSASGGCRKJSADOSSIUHITAGSKGHMANIOKTIQOCLPVMHOYPSSCUSIGCXUUFNYSSYTFFSSRIYOBBHTKOKACCSAUKSSURQUCBLGUCZWXBOHFCHIAZEVLYUCSSUCLRUCHMUCFDWLIQOCRDCKPR | TQIQYPDZMSNBMEJTSADOXJGSMMQRSSASGGCRKJSADOSSIUHITAGSKGHMANIOKTIQOCLPVMHOYPSSCUSIGCXUUFNYSSYTFFSSRIYOBBHTKOKACCSAUKSSURQUCBLGUCZWXBOHFCHIAZEVLYUCSSUCLRUCHMUCFDWLIQOCRDCKPR | GENTLEMEN MAY CRY PEACE PEACE BUT THERE IS NO PEACE THE WAR IS ACTUALLY BEGUN THE NEXT GALE THAT SWEEPS FROM THE NORTH WILL BRING TO OUR EARS THE CLASH OF RESOUNDING ARMS OUR BRETHREN ARE ALREADY IN THE FIELD | slidex | slidex | transposition | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 170 | 170 | cipher_museum | 2.0 | public | null | null |
affine-v3-0615 | JDI GVMS EKFF UVACC JDI BIFGEGVI VKXIV JATKWDJ GJ IFIXIT AUFAUY JDI MIT EKFF UGVVS ATFS JDIKV EIGHATC GTB JDVII BGSC AP VGJKATC MGVUD VAQJIC GTB ANRIUJKXIC EKFF NI BKCJVKNQJIB JA UAMMGTBIVC GJ JDI UVACCKTW | JDI GVMS EKFF UVACC JDI BIFGEGVI VKXIV JATKWDJ GJ IFIXIT AUFAUY JDI MIT EKFF UGVVS ATFS JDIKV EIGHATC GTB JDVII BGSC AP VGJKATC MGVUD VAQJIC GTB ANRIUJKXIC EKFF NI BKCJVKNQJIB JA UAMMGTBIVC GJ JDI UVACCKTW | THE ARMY WILL CROSS THE DELAWARE RIVER TONIGHT AT ELEVEN OCLOCK THE MEN WILL CARRY ONLY THEIR WEAPONS AND THREE DAYS OF RATIONS MARCH ROUTES AND OBJECTIVES WILL BE DISTRIBUTED TO COMMANDERS AT THE CROSSING | affine | affine | substitution | {
"a": 7,
"b": 6
} | beginner | en | 171 | 205 | cipher_museum | 2.0 | public | null | null |
cda-0007675 | NDHY LPFC NSTR YNTR DVNY HSAD HFAD SJAT HYAI RHAL D | NDHY LPFC NSTR YNTR DVNY HSAD HFAD SJAT HYAI RHAL D | ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | monoalphabetic | monoalphabetic | null | {
"alphabet": "SIVJNXOMAWQBCDLPUYTHRKGZFE"
} | medium | en | 41 | 41 | synthetic_educational | null | null | [] | |
cda-0014008 | 20.40.12 7.23.13 7.29.13 6.25.4 4.35.13 2.36.8 1.19.11 11.37.14 1.48.12 13.12.15 10.28.2 15.32.10 16.40.8 14.6.9 5.48.15 15.17.9 4.29.9 18.23.12 3.10.15 18.34.13 20.35.11 7.22.8 4.33.11 8.34.13 3.26.15 16.7.5 8.43.3 1.13.9 1.49.12 5.30.11 11.43.13 13.3.14 20.18.6 5.1.9 18.48.8 13.45.15 14.2.1 1.48.7 13.1.1 9.17.8 14.24... | 20.40.12 7.23.13 7.29.13 6.25.4 4.35.13 2.36.8 1.19.11 11.37.14 1.48.12 13.12.15 10.28.2 15.32.10 16.40.8 14.6.9 5.48.15 15.17.9 4.29.9 18.23.12 3.10.15 18.34.13 20.35.11 7.22.8 4.33.11 8.34.13 3.26.15 16.7.5 8.43.3 1.13.9 1.49.12 5.30.11 11.43.13 13.3.14 20.18.6 5.1.9 18.48.8 13.45.15 14.2.1 1.48.7 13.1.1 9.17.8 14.24... | SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY | book_cipher | book_cipher | null | {} | medium | en | 41 | 41 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
enigma-v2-1254 | FNCINJMWAWJWVJYVQXCOOXIREHLHQJVSPMGEJWIFKBYEDVQYFNXKKXVWXARJXCXCWCZWJXOUQVVQNRPELSICAZSUJFCHSHWCMMUOMHYGYUQVWPQWSIZTMOEYZBOIKUAHWQWJPXFBQARJWDCZTEYSUDUXNIHWBMIDQTUCTTIAIBOURUNKRUQMR | FNCINJMWAWJWVJYVQXCOOXIREHLHQJVSPMGEJWIFKBYEDVQYFNXKKXVWXARJXCXCWCZWJXOUQVVQNRPELSICAZSUJFCHSHWCMMUOMHYGYUQVWPQWSIZTMOEYZBOIKUAHWQWJPXFBQARJWDCZTEYSUDUXNIHWBMIDQTUCTTIAIBOURUNKRUQMR | 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 | enigma | enigma | machine | {
"type": "rotor_start",
"value": "ZZA"
} | expert | en | 181 | 181 | cipher_museum | 2.0 | public | null | null |
cda-0005870 | SNVYP YBFRQ VFNCB FGHER ABGNF YBTNA GURIV TRARE RPVCU REHFR FNERC RNGVA TXRLJ BEQTB BQRQH PNGVB ANYGB BYFRK CYNVA GURVE YVZVG FGURN HGBXR LPVCU RERKG RAQFG URXRL JVGUG URCYN VAGRK GVGFR YSUBA RFGYL | SNVYP YBFRQ VFNCB FGHER ABGNF YBTNA GURIV TRARE RPVCU REHFR FNERC RNGVA TXRLJ BEQTB BQRQH PNGVB ANYGB BYFRK CYNVA GURVE YVZVG FGURN HGBXR LPVCU RERKG RAQFG URXRL JVGUG URCYN VAGRK GVGFR YSUBA RFGYL | FAIL CLOSED IS A POSTURE NOT A SLOGAN THE VIGENERE CIPHER USES A REPEATING KEYWORD GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF HONESTLY | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 165 | 165 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
cda-0006370 | ATSOEEFEKLEPEOTTHNDSCTEYDARFROOIMTOOYBLISIAOWNAHIELIERFVNLIGNENSEUTSRESSTTTICTNSTOOXPHSHENIIGEEFMXAORESDDMTNRNOXRUEFTEEAHCSUNXELARUXNTPOAMEXNDSISOCEODSBTX | ATSOEEFEKLEPEOTTHNDSCTEYDARFROOIMTOOYBLISIAOWNAHIELIERFVNLIGNENSEUTSRESSTTTICTNSTOOXPHSHENIIGEEFMXAORESDDMTNRNOXRUEFTEEAHCSUNXELARUXNTPOAMEXNDSISOCEODSBTX | A TRANSPARENT TOOL SHOULD SHOW ITS REASONING THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE | scytale | scytale | null | {
"cols": 11
} | hard | en | 154 | 154 | synthetic_educational | null | null | [
"column_count_search",
"anagram_recovery"
] | Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter. |
cda-0015926 | 818 853 842 840 855 815 814 833 810 999 861 856 812 856 999 802 999 809 824 820 825 858 999 856 814 849 861 814 840 807 813 999 802 855 999 859 822 812 999 851 814 845 812 800 859 824 840 818 999 831 812 872 999 845 842 835 874 801 834 846 823 800 803 814 859 825 807 999 808 825 846 822 812 852 855 999 862 855 813 999 ... | 818 853 842 840 855 815 814 833 810 999 861 856 812 856 999 802 999 809 824 820 825 858 999 856 814 849 861 814 840 807 813 999 802 855 999 859 822 812 999 851 814 845 812 800 859 824 840 818 999 831 812 872 999 845 842 835 874 801 834 846 823 800 803 814 859 825 807 999 808 825 846 822 812 852 855 999 862 855 813 999 ... | GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS THE VIGENERE CIPHER USES A REPEATING KEYWORD THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY | culper_ring | culper_ring | null | {} | hard | en | 182 | 182 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
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