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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
gronsfeld-v2-0294 | AOLJVBYZLVMAYBLSVCLULCLYKPKYBUZTVVAOAOYVBNOHNLZ | AOLJVBYZLVMAYBLSVCLULCLYKPKYBUZTVVAOAOYVBNOHNLZ | THE COURSE OF TRUE LOVE NEVER DID RUN SMOOTH THROUGH AGES | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "77777"
} | intermediate | en | 47 | 47 | cipher_museum | 2.0 | public | null | null |
gronsfeld-v3-0530 | YMYGXYMYGFMIZZWJ | YMYGXYMYGFMIZZWJ | PER ASPERA AD ASTRA | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "98765"
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
kryptos-v3-0208 | UUTCYTADHVHVRGKEJRSQJMHFZMJQDVFXUVGDNXHUGSOBTXUJUSKTLYVUYVSRUGFYJQIQIGREAMFLCDLZMPLAGVTLSTSYXDYTVUKMEXWLCTMZHYAGXXBSTIJYVPXDILUVTNVWUFZTHVSBXQTSULZOFAQRHGDMWHXIGREAXFLIVPTHDPGDE | UUTCYTADHVHVRGKEJRSQJMHFZMJQDVFXUVGDNXHUGSOBTXUJUSKTLYVUYVSRUGFYJQIQIGREAMFLCDLZMPLAGVTLSTSYXDYTVUKMEXWLCTMZHYAGXXBSTIJYVPXDILUVTNVWUFZTHVSBXQTSULZOFAQRHGDMWHXIGREAXFLIVPTHDPGDE | 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 | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "LANGLEY"
} | advanced | en | 177 | 177 | cipher_museum | 2.0 | public | null | null |
cda-0012609 | NURD TXPB AMCZ XDSO OCWL GKJJ PYQO VFSH JWQQ MXIS JCVJ HZJT WMVT UDMB YMXA CDNT HLRL WZSZ ORVG SQCE FKVC IQUB JXUD ZCDX FDLM QIBA LPMR TFRI BKKN NWQC DDAM IBKH CPPQ TDRW COES FHCR OFDD MTXM NIFD IAWJ PXPP QNKT YN | NURD TXPB AMCZ XDSO OCWL GKJJ PYQO VFSH JWQQ MXIS JCVJ HZJT WMVT UDMB YMXA CDNT HLRL WZSZ ORVG SQCE FKVC IQUB JXUD ZCDX FDLM QIBA LPMR TFRI BKKN NWQC DDAM IBKH CPPQ TDRW COES FHCR OFDD MTXM NIFD IAWJ PXPP QNKT YN | ATBASH ENCODES BY REVERSING THE ALPHABET INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION THE VIGENERE CIPHER USES A REPEATING KEYWORD THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN | 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. |
cda-0004472 | TCECNSWSEEEASHOILCCEECTFLYEISUYAARTEUTSINAEANKRICNOTNCUFNRCOOTDSEDISRAEIRNIAEMEDEELVPCAOMCSXEFQYEHONNEUXONUUSAERDANRXFCLEILRRDRTEX | TCECNSWSEEEASHOILCCEECTFLYEISUYAARTEUTSINAEANKRICNOTNCUFNRCOOTDSEDISRAEIRNIAEMEDEELVPCAOMCSXEFQYEHONNEUXONUUSAERDANRXFCLEILRRDRTEX | THE INDEX OF COINCIDENCE IS A USEFUL CLUE FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS | scytale | scytale | null | {
"cols": 10
} | hard | en | 130 | 130 | synthetic_educational | null | null | [
"column_count_search",
"anagram_recovery"
] | Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter. |
bifid-v2-0592 | LGBDIQTXNDFHVD | LGBDIQTXNDFHVD | SIGNAL FIRES LIT | bifid | bifid | fractionation | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v2-0605 | FEPTDTFNAIDFSCTAGLPJGPDZRHVJVWZNYVQUTZTDQSUCCUEQSPDORFKXGBMDPIJKCCZFJYOMZNSCR | FEPTDTFNAIDFSCTAGLPJGPDZRHVJVWZNYVQUTZTDQSUCCUEQSPDORFKXGBMDPIJKCCZFJYOMZNSCR | DEUTSCHLAND UBER ALLES IN DER WELT WENN ES STETS ZU SCHUTZ UND TRUTZE BRÜDERLICH ZUSAMMENHÄLT | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "CAVALRY"
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
kl7-v2-0242 | CNROSZGAIPTTZSJWKUPVTBRDWMYMXFQYTZBGQOFULBQHZEPKWBTNFXAWNICXPRSTIWGWVHJMDQBPULBXFYXCFLNOMIYKUZMOLJJGAXHUGQBAIFXYBNOZTSPUKPDVRSXACJQHEOXZQAZPBOANSFYKNPPAQXPIQQCMKGXM | CNROSZGAIPTTZSJWKUPVTBRDWMYMXFQYTZBGQOFULBQHZEPKWBTNFXAWNICXPRSTIWGWVHJMDQBPULBXFYXCFLNOMIYKUZMOLJJGAXHUGQBAIFXYBNOZTSPUKPDVRSXACJQHEOXZQAZPBOANSFYKNPPAQXPIQQCMKGXM | 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 | kl7 | kl7 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
typex-v2-0489 | ESVKUJNSZVQJHJHFSMYOQNOLWKRZZFXDSCXLCEIFHSGAOHTXFAPWCTLAXKBMXBGSYZKMISVPSGGHXVKFQMKEDCPWWJJKITFXNMZTYGLXYULZZQUOEHQCFVOBDMMTGRJARRGEKHVXXJTQIRAWTDCB | ESVKUJNSZVQJHJHFSMYOQNOLWKRZZFXDSCXLCEIFHSGAOHTXFAPWCTLAXKBMXBGSYZKMISVPSGGHXVKFQMKEDCPWWJJKITFXNMZTYGLXYULZZQUOEHQCFVOBDMMTGRJARRGEKHVXXJTQIRAWTDCB | THE ART OF WAR IS OF VITAL IMPORTANCE TO THE STATE IT IS A MATTER OF LIFE AND DEATH A ROAD EITHER TO SAFETY OR TO RUIN HENCE IT IS A SUBJECT OF INQUIRY WHICH CAN ON NO ACCOUNT BE NEGLECTED | typex | typex | machine | {
"type": "keyword",
"value": "WINSTON"
} | expert | en | 148 | 148 | cipher_museum | 2.0 | public | null | null |
cda-0015858 | PHIE LBOW GNXO OLDV SORM XKNE BLYG NKFB HGJP DJCB ZZGY GFVG PNNA AJVP CRGC MVWY DNSY PHOE CTZR FMGM VGWS GDR | PHIE LBOW GNXO OLDV SORM XKNE BLYG NKFB HGJP DJCB ZZGY GFVG PNNA AJVP CRGC MVWY DNSY PHOE CTZR FMGM VGWS GDR | CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION | one_time_pad | one_time_pad | null | {} | hard | en | 87 | 87 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
m94-156 | RWNZNJHTXTWUPQAMPCZECWJYGLJWLTOFOVBHWOSVUQIPWDWCZQI | RWNZNJHTXTWUPQAMPCZECWJYGLJWLTOFOVBHWOSVUQIPWDWCZQI | ALL THE WORLDS A STAGE AND ALL THE MEN AND WOMEN MERELY PLAYERS | m94 | m94 | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 51 | 51 | cipher_museum | 0.2 | public | null | null |
autokey-v3-0402 | YYIFLFFAKEZXRKHGOVHHFWVHESAQKDEPSBQBDTVZIGUXCAJTAVSMBEVCFSSFUQIEJRKZOBRBGXJTRH | YYIFLFFAKEZXRKHGOVHHFWVHESAQKDEPSBQBDTVZIGUXCAJTAVSMBEVCFSSFUQIEJRKZOBRBGXJTRH | THE BIRTHDAY PARADOX SHOWS THAT COLLISIONS IN HASH FUNCTIONS OCCUR FAR SOONER THAN EXPECTED | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
cda-0021670 | 13 11 15 43 11 42 43 23 24 21 44 15 14 44 23 15 11 31 35 23 11 12 15 44 12 54 44 23 42 15 15 35 34 43 24 44 24 34 33 43 35 45 12 31 24 13 24 33 21 42 11 43 44 42 45 13 44 45 42 15 14 15 43 15 42 51 15 43 13 11 42 15 21 45 31 14 15 43 24 22 33 44 23 15 12 24 21 24 14 13 24 35 23 15 42 13 34 32 12 24 33 15 43 11 35 34 31... | 13 11 15 43 11 42 43 23 24 21 44 15 14 44 23 15 11 31 35 23 11 12 15 44 12 54 44 23 42 15 15 35 34 43 24 44 24 34 33 43 35 45 12 31 24 13 24 33 21 42 11 43 44 42 45 13 44 45 42 15 14 15 43 15 42 51 15 43 13 11 42 15 21 45 31 14 15 43 24 22 33 44 23 15 12 24 21 24 14 13 24 35 23 15 42 13 34 32 12 24 33 15 43 11 35 34 31... | CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION | polybius | polybius | null | {} | hard | en | 135 | 135 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
four-square-v3-0390 | LANOTKITWCWRRQNO | LANOTKITWCWRRQNO | PER ASPERA AD ASTRA | four_square | four_square | polygraphic | {
"key1": "WISDOM",
"key2": "COURAGE"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
argenti-v3-0237 | 75 20 11 77 28 57 46 29 63 42 33 87 27 11 21 69 18 39 44 49 | 75 20 11 77 28 57 46 29 63 42 33 87 27 11 21 69 18 39 44 49 | THE REDCOATS ARE COMING | argenti | argenti | nomenclator | {
"type": "seed",
"value": "VATICAN"
} | expert | en | 40 | 59 | cipher_museum | 2.0 | public | null | null |
kryha-v3-0085 | UPTBOKEWCFEZOXVKSLTOQFVASUKZXCTKHZFCZQSVUZHHYQZWXDYQCJJCWHOKIARBLSLZRXXOJWZFK | UPTBOKEWCFEZOXVKSLTOQFVASUKZXCTKHZFCZQSVUZHHYQZWXDYQCJJCWHOKIARBLSLZRXXOJWZFK | THE POWERS NOT DELEGATED TO THE UNITED STATES BY THE CONSTITUTION ARE RESERVED TO THE STATES | kryha | kryha | machine | {
"type": "keyword",
"value": "MUNICH"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
voynich-render-v2-0049 | gcd mzofkgu is ldqyu kx rig xgqokrde kg eqinndgc ox gcd hdrgfd qokr sqil cdovdr oaivd | gcd mzofkgu is ldqyu kx rig xgqokrde kg eqinndgc ox gcd hdrgfd qokr sqil cdovdr oaivd | THE QUALITY OF MERCY IS NOT STRAINED IT DROPPETH AS THE GENTLE RAIN FROM HEAVEN ABOVE | voynich_render | voynich_render | substitution | {
"type": "none",
"value": null
} | expert | en | 70 | 85 | cipher_museum | 2.0 | public | null | null |
four-square-v2-0272 | PGMCLTOPRMTHIRUNPSNUEQ | PGMCLTOPRMTHIRUNPSNUEQ | FLEET ASSEMBLES AT HARBOR | four_square | four_square | polygraphic | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
chinese-telegraph-v2-0265 | 5488 5563 4154 5963 5563 4614 4427 4298 5060 5645 5397 5488 4427 | 5488 5563 4154 5963 5563 4614 4427 4298 5060 5645 5397 5488 4427 | STAY THE COURSE | chinese_telegraph | chinese_telegraph | codebook | {
"type": "additive",
"value": "14142"
} | expert | en | 52 | 64 | cipher_museum | 2.0 | public | null | null |
geheimschreiber-v3-0355 | PPVYRVXXFWOBZOBNDADCEZ | PPVYRVXXFWOBZOBNDADCEZ | MESSAGE RECEIVED CLEARLY | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "TEUTON"
} | expert | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-v2-0345 | WWALDMGFXAGND7FZJWCFYB6VMO56A7VXEKBBHXKSBIG7CQLNMITAW347B5HAIGZBAXKDNANAEPRCEWWJKV | WWALDMGFXAGND7FZJWCFYB6VMO56A7VXEKBBHXKSBIG7CQLNMITAW347B5HAIGZBAXKDNANAEPRCEWWJKV | THE PACKAGE CONTAINS BLUEPRINTS FOR THE NEW TORPEDO GUIDANCE SYSTEM DELIVER TO ADMIRAL SMITH NOW | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "FREEDOM"
} | expert | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v2-0558 | CRHYZWRJEKOEFKCCXRZJQGSOHPIYRPVHLELQCFTZEGIHOAMJMNUOEDZJGNXETJGOPZRLKGXEIOH | CRHYZWRJEKOEFKCCXRZJQGSOHPIYRPVHLELQCFTZEGIHOAMJMNUOEDZJGNXETJGOPZRLKGXEIOH | ARMY OF THE POTOMAC CROSSES THE RAPPAHANNOCK TONIGHT ABSOLUTE SILENCE IS IMPERATIVE NOW | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "CAVALRY"
} | intermediate | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
nihilist-182 | 33 46 64 26 76 45 47 74 57 75 23 57 73 24 54 56 | 33 46 64 26 76 45 47 74 57 75 23 57 73 24 54 56 | ALL IS LOST RETREAT | nihilist | nihilist | fractionation | {
"polybius": "ENIGMA",
"keyword": "NIHIL"
} | advanced | en | 32 | 47 | cipher_museum | 0.2 | public | null | null |
atbash-v2-0030 | DRHWLN TFZIWH GSV TZGV | DRHWLN TFZIWH GSV TZGV | WISDOM GUARDS THE GATE | atbash | atbash | substitution | {
"type": "none",
"value": null
} | beginner | en | 19 | 22 | cipher_museum | 2.0 | public | null | null |
one-time-pad-v2-0197 | JDIQBKGMFBAFQYKSNQCZJYVTQQSKHVWZSZCDMXRWZFRXWNKFJONZTXVFNEBBOBEJLHGPWDZSEGBSRMJSEI | JDIQBKGMFBAFQYKSNQCZJYVTQQSKHVWZSZCDMXRWZFRXWNKFJONZTXVFNEBBOBEJLHGPWDZSEGBSRMJSEI | THE ZIMMERMANN TELEGRAM WAS DECODED BY ROOM FORTY IN LONDON AND BROUGHT AMERICA INTO THE GREAT WAR | one_time_pad | one_time_pad | stream | {
"type": "pad",
"value": "QWERTY (repeating)"
} | expert | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
scytale-v2-0545 | AATIGFAUDTXXLTTSOTVHTOXXLGENLEEEHLXXTLRODNYAADXXHISTOHORTXXX | AATIGFAUDTXXLTTSOTVHTOXXLGENLEEEHLXXTLRODNYAADXXHISTOHORTXXX | ALL THAT GLITTERS IS NOT GOLD OFTEN HAVE YOU HEARD THAT TOLD | scytale | scytale | transposition | {
"type": "integer",
"value": 12
} | intermediate | en | 60 | 60 | cipher_museum | 2.0 | public | null | null |
slidex-v2-0004 | PUDOJJJKRMASLX | PUDOJJJKRMASLX | STORM THE BREACH | slidex | slidex | transposition | {
"type": "keyword",
"value": "BLETCHLEY"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-v2-0261 | 4252225102050839282210 | 4252225102050839282210 | THE HARBOR IS CLEAR | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "RASTONICEL"
} | advanced | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
cda-0012062 | 6345 05673 00354 4484 05981 5039 4762 06004 02879 6373 02900 4773 04477 00957 2826 05102 02526 01617 5679 06021 5678 1589 0317 05723 5672 0390 4424 2287 1660 3790 1575 06294 6316 1579 05710 06049 07253 02827 6363 02529 04744 6684 06374 06053 06645 0655 5981 06372 02844 6309 06597 6332 02841 4718 4408 6308 02554 01583 0... | 6345 05673 00354 4484 05981 5039 4762 06004 02879 6373 02900 4773 04477 00957 2826 05102 02526 01617 5679 06021 5678 1589 0317 05723 5672 0390 4424 2287 1660 3790 1575 06294 6316 1579 05710 06049 07253 02827 6363 02529 04744 6684 06374 06053 06645 0655 5981 06372 02844 6309 06597 6332 02841 4718 4408 6308 02554 01583 0... | TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT | zimmermann | zimmermann | null | {} | hard | en | 152 | 152 | synthetic_educational | null | null | [
"codebook_frequency",
"number_group_analysis"
] | Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher. |
solitaire-v3-0121 | XMNKKTOQVBAAEPROTJBR | XMNKKTOQVBAAEPROTJBR | THE KING DEMANDS FEALTY | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "SCHNEIER"
} | expert | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
tap-code-v2-0056 | .... . .... ..... ... .... .... .... .. ... .... .... .. ... . ..... .... .. . . ..... . . ..... ... ... ... ... . ..... ..... . . ..... .... .. ... .. ... .... .... .. . ..... .... .... .. ... . ..... . .. .. .... .... .. . .... .... ... . . .... .... ...... | .... . .... ..... ... .... .... .... .. ... .... .... .. ... . ..... .... .. . . ..... . . ..... ... ... ... ... . ..... ..... . . ..... .... .. ... .. ... .... .... .. . ..... .... .... .. ... . ..... . .. .. .... .... .. . .... .... ... . . .... .... ...... | QUOTH THE RAVEN NEVERMORE THE BIRD SAT ON THE BUST OF PALLAS JUST ABOVE MY CHAMBER DOOR | tap_code | tap_code | substitution | {
"type": "none",
"value": null
} | beginner | en | 410 | 691 | cipher_museum | 2.0 | public | null | null |
bifid-it-007 | RPSEEWITRRPSEKCSEEEXTRRCSEE | RPSEEWITRRPSEKCSEEEXTRRCSEE | RESISTERE RESISTERE RESISTERE | bifid | bifid | fractionation | {
"type": "keyword",
"value": "KEYWORD"
} | advanced | it | 27 | 27 | cipher_museum | 0.2 | public | null | null |
chaocipher-v3-0348 | YEPCKZNYZVSVENZPYV | YEPCKZNYZVSVENZPYV | GRAVITY EXPLAINS ALL | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
argenti-v2-0039 | 14 32 82 36 22 69 65 57 35 16 59 57 25 53 41 16 51 34 44 62 21 57 71 88 | 14 32 82 36 22 69 65 57 35 16 59 57 25 53 41 16 51 34 44 62 21 57 71 88 | TORPEDO AWAY ALL HANDS BRACE | argenti | argenti | nomenclator | {
"type": "seed",
"value": "ROME"
} | expert | en | 48 | 71 | cipher_museum | 2.0 | public | null | null |
cda-0010130 | NSLRH PCGHI FJITJ ITHUL KOGEW GDMGJ VLRKG DGNOV QCTZU PRAWD XGSII JXHFX NGEOY LBIRL RKMVK OVYYG LURVZ SGDLX EGKIN PHCNU GFLPY BTGRQ AQ | NSLRH PCGHI FJITJ ITHUL KOGEW GDMGJ VLRKG DGNOV QCTZU PRAWD XGSII JXHFX NGEOY LBIRL RKMVK OVYYG LURVZ SGDLX EGKIN PHCNU GFLPY BTGRQ AQ | DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION FAIL CLOSED IS A POSTURE NOT A SLOGAN CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING | autokey | autokey | null | {
"primer": "KEY"
} | hard | en | 112 | 112 | synthetic_educational | null | null | [] | |
cda-0009620 | CRIOEUOHSAINDDIEXNTSASLPERTYLOAOLNNUOEKNALKTRRCTXIIEIITCTSFRMRSUMPENDOOHEHEOPGPXXHRENXEIENRESAONASDIRCLKSKAFAAEXXRMTIMASEYEBNSIRTTCKRWWYMSINESTX | CRIOEUOHSAINDDIEXNTSASLPERTYLOAOLNNUOEKNALKTRRCTXIIEIITCTSFRMRSUMPENDOOHEHEOPGPXXHRENXEIENRESAONASDIRCLKSKAFAAEXXRMTIMASEYEBNSIRTTCKRWWYMSINESTX | COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT | stager_route | stager_route | null | {
"cols": 9
} | hard | en | 144 | 144 | synthetic_educational | null | null | [] | |
chaocipher-v2-0435 | DNLFXUWDDWEIHQREZHDDIWKHIGTTUSDNZHUSHURAZEUUUFRBISXWRDXEXPTPRTIRNJCGHMV | DNLFXUWDDWEIHQREZHDDIWKHIGTTUSDNZHUSHURAZEUUUFRBISXWRDXEXPTPRTIRNJCGHMV | WITH MALICE TOWARD NONE WITH CHARITY FOR ALL LET US BIND UP THE NATIONS WOUNDS AND HEAL | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
lorenz-v2-0300 | WESHALLFIGHTONTHEBEACHESANDWESHALLFIGHTONTHELANDINGGROUNDSANDINTHEFIELDS | WESHALLFIGHTONTHEBEACHESANDWESHALLFIGHTONTHELANDINGGROUNDSANDINTHEFIELDS | WE SHALL FIGHT ON THE BEACHES AND WE SHALL FIGHT ON THE LANDING GROUNDS AND IN THE FIELDS | lorenz | lorenz | machine | {
"type": "seed",
"value": "COLOSSUS"
} | expert | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
beaufort-it-012 | BAKJMAONYAABKMJNNPBAKJMAONY | BAKJMAONYAABKMJNNPBAKJMAONY | RESISTERE RESISTERE RESISTERE | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "SECRET"
} | intermediate | it | 27 | 27 | cipher_museum | 0.2 | public | null | null |
cda-0017493 | RKNNF SNMCU NSNRU VCJRI EKHFG OWVQO KERNI YRGNZ BPXJX NFLYD EWRWO RTREW XSIYN XZBNI IIAFF YAXCA KCDEL VKDQP OAMQW RDXQX QTICZ ZGTBX BAVNM JESSO | RKNNF SNMCU NSNRU VCJRI EKHFG OWVQO KERNI YRGNZ BPXJX NFLYD EWRWO RTREW XSIYN XZBNI IIAFF YAXCA KCDEL VKDQP OAMQW RDXQX QTICZ ZGTBX BAVNM JESSO | PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER THE MESSAGE WAS HIDDEN BUT NOT SECURE | one_time_pad | one_time_pad | null | {} | hard | en | 120 | 120 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
cda-0019031 | --- .--. . -. / ... --- ..- .-. -.-. . / - --- --- .-.. ... / .- .-.. .-.. --- .-- / .. -. -.. . .--. . -. -.. . -. - / ...- . .-. .. ..-. .. -.-. .- - .. --- -. / - .... . / .-.. .. -... .-. .- .-. -.-- / .--. .-. . ... . .-. ...- . ... / -.- -. --- .-- .-.. . -.. --. . / ..-. --- .-. / - .... . / -.-. --- -- -- ..- -... | --- .--. . -. / ... --- ..- .-. -.-. . / - --- --- .-.. ... / .- .-.. .-.. --- .-- / .. -. -.. . .--. . -. -.. . -. - / ...- . .-. .. ..-. .. -.-. .- - .. --- -. / - .... . / .-.. .. -... .-. .- .-. -.-- / .--. .-. . ... . .-. ...- . ... / -.- -. --- .-- .-.. . -.. --. . / ..-. --- .-. / - .... . / -.-. --- -- -- ..- -... | OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | morse_code | morse_code | null | {} | hard | en | 86 | 86 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
kryha-v2-0093 | UPTBNUIBTLWMZCHDBMSIVIUYDGLWGRFJYCTXQGJNRIIUWTOABNMLMKTKQRNKOGUIOIHFOPZAPOTJJCLFBZ | UPTBNUIBTLWMZCHDBMSIVIUYDGLWGRFJYCTXQGJNRIIUWTOABNMLMKTKQRNKOGUIOIHFOPZAPOTJJCLFBZ | THE PACKAGE CONTAINS BLUEPRINTS FOR THE NEW TORPEDO GUIDANCE SYSTEM DELIVER TO ADMIRAL SMITH NOW | kryha | kryha | machine | {
"type": "keyword",
"value": "MUNICH"
} | expert | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
nihilist-071 | 75 58 58 36 67 78 46 86 78 38 60 65 46 80 86 | 75 58 58 36 67 78 46 86 78 38 60 65 46 80 86 | OPERATION BEGINS | nihilist | nihilist | fractionation | {
"polybius": "CIPHER",
"keyword": "MUSEUM"
} | advanced | en | 30 | 44 | cipher_museum | 0.2 | public | null | null |
hill-v2-0140 | MBQOPZLYDPRMCQ | MBQOPZLYDPRMCQ | PRESS THE ATTACK | hill | hill | polygraphic | {
"a": 5,
"b": 7,
"c": 2,
"d": 9
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
wallis-cipher-v2-0138 | 90 27 54 53 40 84 85 81 91 90 18 75 73 25 74 88 30 54 53 44 63 41 91 | 90 27 54 53 40 84 85 81 91 90 18 75 73 25 74 88 30 54 53 44 63 41 91 | MISSION ACCOMPLISHED | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "ENGLAND"
} | expert | en | 46 | 68 | cipher_museum | 2.0 | public | null | null |
scytale-v2-0282 | WSOGADTEAEIDMURSHGTX | WSOGADTEAEIDMURSHGTX | WISDOM GUARDS THE GATE | scytale | scytale | transposition | {
"type": "integer",
"value": 10
} | intermediate | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
four-square-v3-0417 | QDDTWMSTDKLATOZCWHQX | QDDTWMSTDKLATOZCWHQX | THE TELESCOPE REVEALS | four_square | four_square | polygraphic | {
"key1": "WISDOM",
"key2": "COURAGE"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
cda-0022146 | GSVER TVMVI VXRKS VIFHV HZIVK VZGRM TPVBD LIWZM ZUURM VXRKS VIZKK ORVHZ ORMVZ IUFMX GRLMG LVZXS OVGGV IWRUU RVZMW SVOON ZMRMG ILWFX VWKFY ORXPV BXIBK GLTIZ KSBRM MRMVG VVMHV EVMGB HRCVI ILIXL IIVXG RLMZM WWVGV XGRLM ZIVUF MWZNV MGZOG LHVXF IVHBH GVNH | GSVER TVMVI VXRKS VIFHV HZIVK VZGRM TPVBD LIWZM ZUURM VXRKS VIZKK ORVHZ ORMVZ IUFMX GRLMG LVZXS OVGGV IWRUU RVZMW SVOON ZMRMG ILWFX VWKFY ORXPV BXIBK GLTIZ KSBRM MRMVG VVMHV EVMGB HRCVI ILIXL IIVXG RLMZM WWVGV XGRLM ZIVUF MWZNV MGZOG LHVXF IVHBH GVNH | THE VIGENERE CIPHER USES A REPEATING KEYWORD AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS | atbash | atbash | null | {} | hard | en | 209 | 209 | synthetic_educational | null | null | [
"self_inverse_check",
"frequency_analysis"
] | Atbash maps A↔Z, B↔Y, … and is its own inverse. |
four-square-176 | DHOCOKTBTDLI | DHOCOKTBTDLI | HOLD POSITION | four_square | four_square | polygraphic | {
"key1": "ENIGMA",
"key2": "CRYPTO"
} | advanced | en | 12 | 12 | cipher_museum | 0.2 | public | null | null |
hill-v2-0607 | WVSIFDCMQKXYARCMRCIYVRBXGYPQAOJIXMFVKBMCJEHWLIQKWPOGYODYXDVBNEBVAIPMCRIKHOWPLPVQ | WVSIFDCMQKXYARCMRCIYVRBXGYPQAOJIXMFVKBMCJEHWLIQKWPOGYODYXDVBNEBVAIPMCRIKHOWPLPVQ | THE AMBASSADOR HAS RECEIVED OUR MOST URGENT DISPATCHES AND AWAITS INSTRUCTIONS FROM LONDON HQ | hill | hill | polygraphic | {
"a": 11,
"b": 3,
"c": 2,
"d": 5
} | advanced | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v2-0208 | LFWLRAKFBKGAMBBKLHBLWVRAHLFUEALRLLHBTWMBRBMAVBWLHAIUSLBQPAIPRRTBKFWLIPRAHFQVXSGLMAMKDARAHFLVC | LFWLRAKFBKGAMBBKLHBLWVRAHLFUEALRLLHBTWMBRBMAVBWLHAIUSLBQPAIPRRTBKFWLIPRAHFQVXSGLMAMKDARAHFLVC | THOSE WHO CANNOT REMEMBER THE PAST ARE CONDEMNED TO REPEAT IT AS PHILOSOPHER SANTAYANA OBSERVED | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 93 | 93 | cipher_museum | 2.0 | public | null | null |
affine-v3-0741 | RNM UCIRXM WI IAZZYAPDMD | RNM UCIRXM WI IAZZYAPDMD | THE CASTLE IS SURROUNDED | affine | affine | substitution | {
"a": 9,
"b": 2
} | beginner | en | 21 | 24 | cipher_museum | 2.0 | public | null | null |
m209-v3-0170 | XZRBLCRMWWMQDOTBLBXYAJPJVBNACIVNNJVVWAMLYXCBJJKVRWCKWGMDPVRXIUYAPCJWPWNJUS | XZRBLCRMWWMQDOTBLBXYAJPJVBNACIVNNJVVWAMLYXCBJJKVRWCKWGMDPVRXIUYAPCJWPWNJUS | GENERAL SHERMAN MARCHED TO THE SEA THROUGH GEORGIA CUTTING A SIXTY MILE WIDE PATH OF RUIN | m209 | m209 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
four-square-v2-0375 | SBRZDFKMNUZTDDSO | SBRZDFKMNUZTDDSO | THE WALLS HAVE EARS | four_square | four_square | polygraphic | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
cda-0002469 | QBHOYR GENAFCBFVGVBA NCCYVRF PBYHZANE RAPELCGVBA GJVPR GUR ENVY SRAPR PVCURE JEVGRF GRKG VA N MVTMNT CNGGREA GUR SEVRQZNA GRFG HFRF GUR VAQRK BS PBVAPVQRAPR GB RFGVZNGR XRL YRATGU | QBHOYR GENAFCBFVGVBA NCCYVRF PBYHZANE RAPELCGVBA GJVPR GUR ENVY SRAPR PVCURE JEVGRF GRKG VA N MVTMNT CNGGREA GUR SEVRQZNA GRFG HFRF GUR VAQRK BS PBVAPVQRAPR GB RFGVZNGR XRL YRATGU | DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 152 | 152 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
beaufort-v2-0054 | NNZUAIUXHDAUZSLQMWZMTOWUGAUSZYNXLFBZLUSEBFHXSSNVZTRZKVFTHFMJFMDGZJWESKTJAQP | NNZUAIUXHDAUZSLQMWZMTOWUGAUSZYNXLFBZLUSEBFHXSSNVZTRZKVFTHFMJFMDGZJWESKTJAQP | ARMY OF THE POTOMAC CROSSES THE RAPPAHANNOCK TONIGHT ABSOLUTE SILENCE IS IMPERATIVE NOW | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "NELSON"
} | intermediate | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
beaufort-es-016 | XMLUSOXGBYJUSLNVQWZDB | XMLUSOXGBYJUSLNVQWZDB | ESPANA UNA GRANDE Y LIBRE | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "BEAUFORT"
} | intermediate | es | 21 | 21 | cipher_museum | 0.2 | public | null | null |
cda-0002512 | RIRRPIOCRNPMBRIEPOUHADEEEAXXTTDSIDETERANCGRTXXEIERAGSC | RIRRPIOCRNPMBRIEPOUHADEEEAXXTTDSIDETERANCGRTXXEIERAGSC | ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN | stager_route | stager_route | null | {
"cols": 6
} | medium | en | 54 | 54 | synthetic_educational | null | null | [
"column_count_search",
"route_pattern_search"
] | Route (Stager) cipher: write into rectangle, read via alternating column route. |
kl7-163 | ISLGILEDSJWERZXKZOWZMMOCQSJIBKHEUZOEHPTNGKNPIKV | ISLGILEDSJWERZXKZOWZMMOCQSJIBKHEUZOEHPTNGKNPIKV | THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG NEAR THE RIVER | kl7 | kl7 | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 47 | 47 | cipher_museum | 0.2 | public | null | null |
affine-v2-1228 | FHQBQ KOJWZLTZZTHW TWQTFJKBZ BWBLN MHOFBZ JZZBLUATWX JAHWX KIB UHOQBO RTKI IBJGN JOKTAABON VWTKZ | FHQBQ KOJWZLTZZTHW TWQTFJKBZ BWBLN MHOFBZ JZZBLUATWX JAHWX KIB UHOQBO RTKI IBJGN JOKTAABON VWTKZ | CODED TRANSMISSION INDICATES ENEMY FORCES ASSEMBLING ALONG THE BORDER WITH HEAVY ARTILLERY UNITS | affine | affine | substitution | {
"a": 11,
"b": 9
} | beginner | en | 84 | 96 | cipher_museum | 2.0 | public | null | null |
copiale-165 | S3 M9 D5 G8 I6 A3 C1 P5 G0 L3 W1 I5 I7 G6 X5 T3 S7 M1 I8 Q0 K3 Y4 J5 Y7 A9 Q3 L9 J5 N8 E4 H4 B0 Q5 P5 A0 O8 T3 Q4 H1 Q4 N8 I6 J4 Z6 K5 B8 | S3 M9 D5 G8 I6 A3 C1 P5 G0 L3 W1 I5 I7 G6 X5 T3 S7 M1 I8 Q0 K3 Y4 J5 Y7 A9 Q3 L9 J5 N8 E4 H4 B0 Q5 P5 A0 O8 T3 Q4 H1 Q4 N8 I6 J4 Z6 K5 B8 | I HAVE NOT YET BEGUN TO FIGHT SAID THE CAPTAIN TO THE CREW | copiale | copiale | substitution | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 92 | 137 | cipher_museum | 0.2 | public | null | null |
bazeries-v3-0293 | JYVOLYUGOGFMYCYRYOTEOGORFPYVRYONOTOMXHMYIYVOOMFGOPONTFGNYLYLQLYMGORYMYVOYOTOM | JYVOLYUGOGFMYCYRYOTEOGORFPYVRYONOTOMXHMYIYVOOMFGOPONTFGNYLYLQLYMGORYMYVOYOTOM | THE POWERS NOT DELEGATED TO THE UNITED STATES BY THE CONSTITUTION ARE RESERVED TO THE STATES | bazeries | bazeries | transposition | {
"type": "integer",
"value": 37
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
cda-0019064 | KVYTVEPXAITLLVEVHULTGUNKTDMKWJMIEUJIFDSNKMEXPAXVJEVOXTKTQSPRRHIISFROSMGOROBVXJKTXBXWKVBPSGFBEDNYNWVBSTOLGCBXVRNAKLEQCXPXWQBNIYILTZBIIPOYGOMIYMTPDOTRTRJHBXENXWHFVLSCOQEVFALBVOCVEUJCMUXHX | KVYTVEPXAITLLVEVHULTGUNKTDMKWJMIEUJIFDSNKMEXPAXVJEVOXTKTQSPRRHIISFROSMGOROBVXJKTXBXWKVBPSGFBEDNYNWVBSTOLGCBXVRNAKLEQCXPXWQBNIYILTZBIIPOYGOMIYMTPDOTRTRJHBXENXWHFVLSCOQEVFALBVOCVEUJCMUXHX | THE ARCHITECTURE SHOULD MAKE MISUSE HARDER ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER | running_key | running_key | null | {} | hard | en | 185 | 185 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
playfair-239 | NLGIFQRNQIGHEUXY | NLGIFQRNQIGHEUXY | OPERATION BEGINS | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "PLAYFAIR"
} | intermediate | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
cda-0007285 | NUDP EBSE LNMS EFCA SKCT TRHP RTOS NELO NOHW NHRI EEPA BMES OIAC RRTF ATOS REEC TNLT TTEL WTFA ALBU AINN ONLB HYRE IHYI ROIE FEER MTKS CFAA WLEX HHBS COOW IHPO OPEE EWAT SEKA STSS NPUE HEDN LIUP ETLO AERA ELHS ITSH TI | NUDP EBSE LNMS EFCA SKCT TRHP RTOS NELO NOHW NHRI EEPA BMES OIAC RRTF ATOS REEC TNLT TTEL WTFA ALBU AINN ONLB HYRE IHYI ROIE FEER MTKS CFAA WLEX HHBS COOW IHPO OPEE EWAT SEKA STSS NPUE HEDN LIUP ETLO AERA ELHS ITSH TI | PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION THE BEST LESSONS SHOW WHERE THE METHOD FAILS BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER | double_transposition | double_transposition | null | {
"key1": "CIPHER",
"key2": "PALACE"
} | hard | en | 174 | 174 | synthetic_educational | null | null | [] | |
columnar-transposition-v2-1066 | NLAIOEAFEVEFOWCYTBURIUFSOOSASIEMLSWMOVEHOCTUBYWONTDNCMDNESEFHNAHSORL | NLAIOEAFEVEFOWCYTBURIUFSOOSASIEMLSWMOVEHOCTUBYWONTDNCMDNESEFHNAHSORL | NEVER IN THE FIELD OF HUMAN CONFLICT WAS SO MUCH OWED BY SO MANY TO SO FEW BRAVE SOULS | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "TRIUMPH"
} | intermediate | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
rail-fence-v3-0437 | TGHNEEASPHARCLISLNSTEIRNPG | TGHNEEASPHARCLISLNSTEIRNPG | THE PRINTING PRESS CHANGES ALL | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 11
} | intermediate | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
cda-0013571 | 22 3 58 76 58 21 72 58 3 22 21 91 66 45 70 1 15 52 52 23 25 33 87 25 59 45 81 82 58 23 46 32 81 62 2 4 23 15 60 1 39 91 76 50 48 21 32 34 22 43 92 50 68 22 40 11 50 14 67 50 68 66 68 14 25 66 72 15 35 59 63 17 23 34 11 40 2 63 22 2 21 94 96 48 68 68 23 58 91 45 2 62 49 61 46 23 34 33 99 25 30 23 25 91 23 58 24 3 45 81 ... | 22 3 58 76 58 21 72 58 3 22 21 91 66 45 70 1 15 52 52 23 25 33 87 25 59 45 81 82 58 23 46 32 81 62 2 4 23 15 60 1 39 91 76 50 48 21 32 34 22 43 92 50 68 22 40 11 50 14 67 50 68 66 68 14 25 66 72 15 35 59 63 17 23 34 11 40 2 63 22 2 21 94 96 48 68 68 23 58 91 45 2 62 49 61 46 23 34 33 99 25 30 23 25 91 23 58 24 3 45 81 ... | ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION CERTAINLY | homophonic | homophonic | null | {} | hard | en | 212 | 212 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
four-square-v2-0220 | DRMENRKHQRIUPKONRRQIMELHHFGLMQKBLEQCHLPSTEFHRRBNISZLSDRTQBGBPCLOMNQIZFBDDLDEQRATAZ | DRMENRKHQRIUPKONRRQIMELHHFGLMQKBLEQCHLPSTEFHRRBNISZLSDRTQBGBPCLOMNQIZFBDDLDEQRATAZ | GENERAL ORDERS NUMBER ONE ALL COMMUNICATIONS SHALL BE ENCRYPTED USING THE APPROVED CIPHER DISK | four_square | four_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v3-0255 | TETDLECFESFYTGPCDLWWJLNVYZHWPORPOESLELDTYRWPXLYTYAZDDPDDTZYZQLQZCEFYPXFDEMPTYHLYEZQLHTQP | TETDLECFESFYTGPCDLWWJLNVYZHWPORPOESLELDTYRWPXLYTYAZDDPDDTZYZQLQZCEFYPXFDEMPTYHLYEZQLHTQP | IT IS A TRUTH UNIVERSALLY ACKNOWLEDGED THAT A SINGLE MAN IN POSSESSION OF A FORTUNE MUST BE IN WANT OF A WIFE | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "HANGUL"
} | beginner | en | 88 | 88 | cipher_museum | 2.0 | public | null | null |
culper-ring-v2-0100 | 998 811 800 999 998 821 808 803 800 999 998 804 818 999 998 818 820 804 813 814 999 998 824 999 998 811 814 818 999 998 818 820 804 813 814 818 999 998 818 820 804 813 814 818 999 998 818 814 813 999 998 815 800 817 800 999 998 819 814 803 814 818 999 998 811 814 818 999 998 816 820 804 999 998 821 808 821 804 813 999 ... | 998 811 800 999 998 821 808 803 800 999 998 804 818 999 998 818 820 804 813 814 999 998 824 999 998 811 814 818 999 998 818 820 804 813 814 818 999 998 818 820 804 813 814 818 999 998 818 814 813 999 998 815 800 817 800 999 998 819 814 803 814 818 999 998 811 814 818 999 998 816 820 804 999 998 821 808 821 804 813 999 ... | LA VIDA ES SUENO Y LOS SUENOS SUENOS SON PARA TODOS LOS QUE VIVEN BAJO EL CIELO ETERNO | culper_ring | culper_ring | codebook | {
"type": "none",
"value": null
} | expert | en | 315 | 419 | cipher_museum | 2.0 | public | null | null |
two-square-v2-0316 | RGFORICESBLIBERTVTLFTETOBKVIDTNESUEAQARGEWUKQIQBKADODIREEDTPQCBKSELBNFQARGTABSOZ | RGFORICESBLIBERTVTLFTETOBKVIDTNESUEAQARGEWUKQIQBKADODIREEDTPQCBKSELBNFQARGTABSOZ | THE PRICE OF LIBERTY IS ETERNAL VIGILANCE AND THE WILL TO DEFEND IT AGAINST ALL FOES AND THREATS | two_square | two_square | polygraphic | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
trifid-v3-0140 | CUAMI+YWODDQUIGEZI | CUAMI+YWODDQUIGEZI | GRAVITY EXPLAINS ALL | trifid | trifid | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
wheatstone-073 | ELEKYRMQPESLECQ | ELEKYRMQPESLECQ | ENEMY FORCES NEAR | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
sigaba-v2-0371 | GUDXWBEXFPNMDHMHUYTSEASBNJJSGRGAFABFBVQZPGZUTGUIUJIRTDMVCIGFDJEYZCPYMCAUTQUFVVMGCFDPJLFIMBTFXHFXMIDZKIUKCZQHYRLAZZFMBCNJLEXCJWUCIZVFOAZYZJNQATXFBQOVNHOAXEPRJDLEXCKQCHLNLPCEXDV | GUDXWBEXFPNMDHMHUYTSEASBNJJSGRGAFABFBVQZPGZUTGUIUJIRTDMVCIGFDJEYZCPYMCAUTQUFVVMGCFDPJLFIMBTFXHFXMIDZKIUKCZQHYRLAZZFMBCNJLEXCJWUCIZVFOAZYZJNQATXFBQOVNHOAXEPRJDLEXCKQCHLNLPCEXDV | THE HISTORY OF CRYPTOLOGY IS A BATTLE OF WITS BETWEEN THOSE WHO MAKE CODES AND THOSE WHO BREAK THEM FOR EVERY SYSTEM DEVISED BY A CUNNING ENCIPHERER A PATIENT CRYPTANALYST HAS FOUND A METHOD TO REVEAL ITS SECRETS | sigaba | sigaba | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 175 | 175 | cipher_museum | 2.0 | public | null | null |
chaocipher-v2-0087 | NNKYLLARTHBRDUMNMHGAGJVJQSAVBMSPZQHPXVBSNMGPELNBTBFHYQGEOIGSJCFKGQYLRJPXVCZR | NNKYLLARTHBRDUMNMHGAGJVJQSAVBMSPZQHPXVBSNMGPELNBTBFHYQGEOIGSJCFKGQYLRJPXVCZR | ALAN TURING AND GORDON WELCHMAN BUILT THE BOMBE TO ATTACK THE GERMAN ENIGMA CIPHER MACHINE | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
cda-0016400 | ⌐· ┌· L └· X· L ─ r ⌒· ⌐ ─ ⌐ └ ⌒· X Γ· X r ⌐ ─ ┌· L K· L ⌐ └ ⌒ L ⌐ ┐ r Γ· ┐· r· L ┌· X ┐· L ┌· r· ⌐ ┐· X | ⌐· ┌· L └· X· L ─ r ⌒· ⌐ ─ ⌐ └ ⌒· X Γ· X r ⌐ ─ ┌· L K· L ⌐ └ ⌒ L ⌐ ┐ r Γ· ┐· r· L ┌· X ┐· L ┌· r· ⌐ ┐· X | FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS PERHAPS | pigpen | pigpen | null | {} | easy | en | 18 | 18 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
kl7-181 | OWVREHFNCHGZ | OWVREHFNCHGZ | ATTACK AT DAWN | kl7 | kl7 | machine | {
"type": "seed",
"value": "MUSEUM"
} | expert | en | 12 | 12 | cipher_museum | 0.2 | public | null | null |
confederate-vigenere-v2-0243 | WWTPMACHIAWHPSQWYIVUQWGKVZFLMHUQFZNPRSARIIPNQZFQFZRYUBPLGINPFWRVEWTWAKRUJVQYFVVQXARYQGRQKVQYFVVQXAVVOCZHEWTOQWTKKVQYPSCWYVQYMBLRKPGYOFRDKCTLEVNOCJGHNZRWFAGWMFNWVCUMDCZWYMNVHSBIXWF | WWTPMACHIAWHPSQWYIVUQWGKVZFLMHUQFZNPRSARIIPNQZFQFZRYUBPLGINPFWRVEWTWAKRUJVQYFVVQXARYQGRQKVQYFVVQXAVVOCZHEWTOQWTKKVQYPSCWYVQYMBLRKPGYOFRDKCTLEVNOCJGHNZRWFAGWMFNWVCUMDCZWYMNVHSBIXWF | 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 | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "RICHMOND"
} | intermediate | en | 179 | 179 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v2-0538 | VORNRLUSUOCSEMODO | VORNRLUSUOCSEMODO | NOVUS ORDO SECLORUM | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "DRAGON"
} | intermediate | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
great-cipher-147 | 116 165 105 100 128 112 118 105 | 116 165 105 100 128 112 118 105 | THE TRAP IS SET | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "SECRET"
} | expert | en | 24 | 31 | cipher_museum | 0.2 | public | null | null |
cda-0018202 | shal shor okeedy qokeedy shedy daiin shal dal shedy daiin chedal otedy dal choldaiin chedy dainy qokeedy okal okeedy aiiin shaiin kaiiin sheedy okain daiin okedy otain sharal dal sheol | shal shor okeedy qokeedy shedy daiin shal dal shedy daiin chedal otedy dal choldaiin chedy dainy qokeedy okal okeedy aiiin shaiin kaiiin sheedy okain daiin okedy otain sharal dal sheol | TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION THE BEST LESSONS SHOW WHERE THE METHOD FAILS | voynich_render | voynich_render | null | {} | hard | en | 155 | 155 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
cda-0008815 | WUBE AOIG POWD PIEO QDRQ LKPG CACO XNUR EZSJ JQXN DZJA WNLJ OVNZ PKYR XVEC YINA TNJP LQLD CFHC ZNLE COTN JPLQ ZRUX NWQZ YFHP ECOQ WNNN PUWH MGOC PU | WUBE AOIG POWD PIEO QDRQ LKPG CACO XNUR EZSJ JQXN DZJA WNLJ OVNZ PKYR XVEC YINA TNJP LQLD CFHC ZNLE COTN JPLQ ZRUX NWQZ YFHP ECOQ WNNN PUWH MGOC PU | GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER FAIL CLOSED IS A POSTURE NOT A SLOGAN | beaufort | beaufort | null | {
"key": "CIPHER"
} | hard | en | 118 | 118 | synthetic_educational | null | null | [] | |
cda-0007175 | RNIQDL DKFVAPMVNLMNVG CGPGVOGP LAVGFNQ CGPDBK LQAPPDLAQ LDRYGVP MGALY SYT WXCGVK PGLNVDMT WAMMGVP BXXC GCNLAMDXKAQ MXXQP GZRQADK MYGDV QDWDMP A PMVXKB LQADW KGGCP PMVXKB GODCGKLG LAVGFNQQT | RNIQDL DKFVAPMVNLMNVG CGPGVOGP LAVGFNQ CGPDBK LQAPPDLAQ LDRYGVP MGALY SYT WXCGVK PGLNVDMT WAMMGVP BXXC GCNLAMDXKAQ MXXQP GZRQADK MYGDV QDWDMP A PMVXKB LQADW KGGCP PMVXKB GODCGKLG LAVGFNQQT | PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS A STRONG CLAIM NEEDS STRONG EVIDENCE CAREFULLY | monoalphabetic | monoalphabetic | null | {
"alphabet": "AILCGFBYDUEQWKXRHVPMNOSZTJ"
} | hard | en | 164 | 164 | synthetic_educational | null | null | [] | |
red-type-a-v2-0135 | MTOGEGZIXAWMSAIQ | MTOGEGZIXAWMSAIQ | THE HARBOR IS CLEAR | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "YAMATO"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
wallis-cipher-v2-0006 | 90 55 61 56 91 90 14 81 24 43 91 90 33 24 91 90 23 54 60 82 91 | 90 55 61 56 91 90 14 81 24 43 91 90 33 24 91 90 23 54 60 82 91 | THE PASS IS HELD | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "OXFORD"
} | expert | en | 42 | 62 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v3-0352 | AMDUHT | AMDUHT | EUREKA | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 6 | 6 | cipher_museum | 2.0 | public | null | null |
playfair-v2-0663 | OECSNFUTZOUCIDVEQIGAHDVNAHNGRAHFULFGDUUIUBQEUCTIOHOFICFNUBNFCQUEVNGDUBQEIUZFGDBS | OECSNFUTZOUCIDVEQIGAHDVNAHNGRAHFULFGDUUIUBQEUCTIOHOFICFNUBNFCQUEVNGDUBQEIUZFGDBS | NATURE IS WRITTEN IN THE LANGUAGE OF MATHEMATICS AND ITS CHARACTERS ARE TRIANGLES AND CIRCLES | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v2-0188 | HVSZCFRWGAMGVSDVSFRWGVOZZBCHKOBHVSAOYSHVASZWSRCKBWBUFSSBDOGHIFSGPMGHWZZKOHSFG | HVSZCFRWGAMGVSDVSFRWGVOZZBCHKOBHVSAOYSHVASZWSRCKBWBUFSSBDOGHIFSGPMGHWZZKOHSFG | THE LORD IS MY SHEPHERD I SHALL NOT WANT HE MAKETH ME LIE DOWN IN GREEN PASTURES BY STILL WATERS | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "JOSEON"
} | beginner | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
kryha-022 | WWDBVTQBPQUGDEICHJ | WWDBVTQBPQUGDEICHJ | AWAIT FURTHER ORDERS | kryha | kryha | machine | {
"type": "keyword",
"value": "KRYHA"
} | expert | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
trifid-vg-0004 | FTUFLCGILBWWNONI+WQUBIGQQOJLVVINLIXTBFHMIGLQHITRXLXUQQNPLDIUN | FTUFLCGILBWWNONI+WQUBIGQQOJLVVINLIXTBFHMIGLQHITRXLXUQQNPLDIUN | FAITH IS THE SUBSTANCE OF THINGS HOPED FOR THE EVIDENCE OF THINGS NOT SEEN | trifid | trifid | fractionation | {
"type": "keyword",
"value": "FELIX"
} | advanced | en | 61 | 61 | cipher_museum | 2.0 | public | null | null |
geheimschreiber-v3-0177 | JQPFAHAGNMRNCVHPFEYHNRSUYJRQYAXEATREFFHGARNNMHPVXYYOUYBWIRMYXEIBWBMELMHKHSGYJD | JQPFAHAGNMRNCVHPFEYHNRSUYJRQYAXEATREFFHGARNNMHPVXYYOUYBWIRMYXEIBWBMELMHKHSGYJD | BLESSED ARE THE MEEK FOR THEY SHALL INHERIT THE EARTH AND THE PEACEMAKERS SHALL BE CALLED SONS | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "KAISER"
} | expert | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
cda-0014881 | ⟨w10⟩ ⟨a11⟩ ⟨w22⟩ ⟨w20⟩ ⟨a19⟩ ⟨a31⟩ ⟨w08⟩ ⟨a11⟩ ⟨a01⟩ ⟨w20⟩ ⟨w20⟩ ⟨a31⟩ ⟨w32⟩ ⟨a17⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨w20⟩ ⟨w14⟩ ⟨w10⟩ ⟨w04⟩ ⟨w20⟩ ⟨w22⟩ ⟨a11⟩ ⟨w20⟩ ⟨a23⟩ ⟨w10⟩ ⟨a19⟩ ⟨w20⟩ ⟨w14⟩ ⟨w10⟩ ⟨a07⟩ ⟨a23⟩ ⟨w32⟩ ⟨a17⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨w20⟩ | ⟨w10⟩ ⟨a11⟩ ⟨w22⟩ ⟨w20⟩ ⟨a19⟩ ⟨a31⟩ ⟨w08⟩ ⟨a11⟩ ⟨a01⟩ ⟨w20⟩ ⟨w20⟩ ⟨a31⟩ ⟨w32⟩ ⟨a17⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨w20⟩ ⟨w14⟩ ⟨w10⟩ ⟨w04⟩ ⟨w20⟩ ⟨w22⟩ ⟨a11⟩ ⟨w20⟩ ⟨a23⟩ ⟨w10⟩ ⟨a19⟩ ⟨w20⟩ ⟨w14⟩ ⟨w10⟩ ⟨a07⟩ ⟨a23⟩ ⟨w32⟩ ⟨a17⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨w20⟩ | OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE | babington | babington | null | {} | medium | en | 39 | 39 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
trifid-093 | QJLXNOISASLPELU+WJVODCNENUCRKLBHILLF | QJLXNOISASLPELU+WJVODCNENUCRKLBHILLF | THE ONLY THING WE HAVE TO FEAR IS FEAR ITSELF | trifid | trifid | fractionation | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 36 | 36 | cipher_museum | 0.2 | public | null | null |
pigpen-v2-0071 | ┐ ╳ ╳• ⌐ ╲ ╳ ┬ ┼ ┴ ┼ ╲ ╳ ┤• ┤ ╳ ┐ ├• ┼ ╲ ┐ ╳ ╳• ⌐ ╲ ⌐ ┼• ⌐ ┌ ┼ ┤• ┤ ╳• ┐ ╲ ├ ┤• ├• ⌐ ┼• ├ ⌐ ┼• ⌐ ┌ ┼ ┤• ┤ ╱ ╳ ╳ ┼ ┐• ┤ ┤• ┤• ¬• ┐ ╲ ┬ ┼• ┼ ╲ ╲ | ┐ ╳ ╳• ⌐ ╲ ╳ ┬ ┼ ┴ ┼ ╲ ╳ ┤• ┤ ╳ ┐ ├• ┼ ╲ ┐ ╳ ╳• ⌐ ╲ ⌐ ┼• ⌐ ┌ ┼ ┤• ┤ ╳• ┐ ╲ ├ ┤• ├• ⌐ ┼• ├ ⌐ ┼• ⌐ ┌ ┼ ┤• ┤ ╱ ╳ ╳ ┼ ┐• ┤ ┤• ┤• ¬• ┐ ╲ ┬ ┼• ┼ ╲ ╲ | IT WAS THE BEST OF TIMES IT WAS AN AGE OF WISDOM AND AN AGE OF UTTER FOOLISHNESS | pigpen | pigpen | substitution | {
"type": "none",
"value": null
} | beginner | en | 80 | 142 | cipher_museum | 2.0 | public | null | null |
rail-fence-253 | ESNENECEMRAYORF | ESNENECEMRAYORF | ENEMY FORCES NEAR | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 6
} | intermediate | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
four-square-v2-0216 | KMRRQQTRKMNCNRSDPICTMTFFKIQQREOKKTQECMKBPSBNNLIPLZFLQUCLFBNRFEATEOINTLSEKU | KMRRQQTRKMNCNRSDPICTMTFFKIQQREOKKTQECMKBPSBNNLIPLZFLQUCLFBNRFEATEOINTLSEKU | LIBERTÉ ÉGALITÉ FRATERNITÉ OU LA MORT CES MOTS DÉFINISSENT LA REVOLUTION FRANÇAISE DE MIL SEPT | four_square | four_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
enigma-v3-0753 | BIZILVENRDHALRL | BIZILVENRDHALRL | CHART THE UNKNOWN | enigma | enigma | machine | {
"type": "rotor_start",
"value": "VWX"
} | expert | en | 15 | 15 | cipher_museum | 2.0 | public | null | null |
cda-0005603 | M IEBQB KUF CJMUCKZW XMBZADZU TYL MT KUF EJUY TO IDYZO | M IEBQB KUF CJMUCKZW XMBZADZU TYL MT KUF EJUY TO IDYZO | A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG | beaufort | beaufort | null | {
"key": "MUSEUM"
} | medium | en | 44 | 44 | synthetic_educational | null | null | [
"kasiski_examination",
"friedman_test",
"index_of_coincidence"
] | Beaufort: E(x)=k-x mod 26 — reciprocal cipher (decryption identical to encryption). |
two-square-v2-0451 | QNEALCOPSARMRHOPDRCEHWFNOUDOOSSNRGENUNMOSEUBHESAFTRXAITSLHPURUNUIOFMFRDSIQFTONLM | QNEALCOPSARMRHOPDRCEHWFNOUDOOSSNRGENUNMOSEUBHESAFTRXAITSLHPURUNUIOFMFRDSIQFTONLM | THE AMBASSADOR HAS RECEIVED OUR MOST URGENT DISPATCHES AND AWAITS INSTRUCTIONS FROM LONDON HQ | two_square | two_square | polygraphic | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
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