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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
nihilist-v3-0193 | 25 57 60 43 65 48 77 55 57 56 35 27 38 73 24 27 87 54 55 57 63 36 68 | 25 57 60 43 65 48 77 55 57 56 35 27 38 73 24 27 87 54 55 57 63 36 68 | ROME WAS NOT BUILT IN ONE DAY | nihilist | nihilist | fractionation | {
"polybius": "TRIUMPH",
"keyword": "JUSTICE"
} | advanced | en | 46 | 68 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v3-0034 | MTLHSTFNJPSVDSDPWOHVDL | MTLHSTFNJPSVDSDPWOHVDL | OLD IRONSIDES HOLDS | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
cda-0003907 | A TEBXFRL QB K CAQ IHUU TR MKWORZNT VR ISIYGYD XQFGPWVK | A TEBXFRL QB K CAQ IHUU TR MKWORZNT VR ISIYGYD XQFGPWVK | A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES | trithemius | trithemius | null | {} | medium | en | 45 | 45 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
cda-0015585 | 35 26 30 14 4 81 2 34 25 34 27 70 11 63 72 50 49 68 93 26 81 3 22 27 64 50 87 76 96 32 40 99 50 49 70 80 22 92 72 34 62 48 3 64 59 46 46 59 48 1 81 62 17 48 30 30 40 1 70 49 81 68 34 26 64 32 35 23 64 63 32 67 96 93 87 80 48 41 35 3 92 63 68 45 24 58 1 63 94 41 59 81 15 49 70 33 60 48 22 81 11 48 79 33 15 91 41 11 66 5... | 35 26 30 14 4 81 2 34 25 34 27 70 11 63 72 50 49 68 93 26 81 3 22 27 64 50 87 76 96 32 40 99 50 49 70 80 22 92 72 34 62 48 3 64 59 46 46 59 48 1 81 62 17 48 30 30 40 1 70 49 81 68 34 26 64 32 35 23 64 63 32 67 96 93 87 80 48 41 35 3 92 63 68 45 24 58 1 63 94 41 59 81 15 49 70 33 60 48 22 81 11 48 79 33 15 91 41 11 66 5... | COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING | homophonic | homophonic | null | {} | hard | en | 155 | 155 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
m209-248 | VPSBMPLUKUQO | VPSBMPLUKUQO | HOLD POSITION | m209 | m209 | machine | {
"type": "seed",
"value": "ENIGMA"
} | expert | en | 12 | 12 | cipher_museum | 0.2 | public | null | null |
m209-v2-0032 | APQHKYAKJIRKS | APQHKYAKJIRKS | E PLURIBUS UNUM | m209 | m209 | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
lorenz-v2-0015 | ABORTANDWITHDRAW | ABORTANDWITHDRAW | ABORT AND WITHDRAW | lorenz | lorenz | machine | {
"type": "seed",
"value": "TUNNY"
} | expert | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v3-0403 | ELOOROLTVTLSKGSNTKGULKGFNEAEONETINEREOWTVEHEHEEODFOYEDOAEDLOPLPPOWRNOIZWRLARWIEGWT | ELOOROLTVTLSKGSNTKGULKGFNEAEONETINEREOWTVEHEHEEODFOYEDOAEDLOPLPPOWRNOIZWRLARWIEGWT | ZERO KNOWLEDGE PROOFS ALLOW ONE PARTY TO PROVE KNOWLEDGE WITHOUT REVEALING THE KNOWLEDGE ITSELF | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "WARRIOR"
} | intermediate | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
scytale-v3-0063 | OLSIYTTNNLLVBHSVDIAEEEEADENNAGASADDOCRBIYFERHEOOTODMEARNHROASTNXECNNIEEXAEFDNSIX | OLSIYTTNNLLVBHSVDIAEEEEADENNAGASADDOCRBIYFERHEOOTODMEARNHROASTNXECNNIEEXAEFDNSIX | ON D DAY THE ALLIED FORCES LANDED ON FIVE NORMANDY BEACHES IN THE GREATEST SEABORNE INVASION | scytale | scytale | transposition | {
"type": "integer",
"value": 8
} | intermediate | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
adfgvx-v2-0552 | AGGFAAAADFDGAAFVAFAAAADDDVDDDDVXGXDVDFAXVFGVGVFAAAGADDAFAFFAFAAFAAGADXVFGVGDFFFFXADXDGGVDDVDVXGDVFDDGGFDGGDGDVXDDFDFDADFAFAAAFVAFGFDDAGA | AGGFAAAADFDGAAFVAFAAAADDDVDDDDVXGXDVDFAXVFGVGVFAAAGADDAFAFFAFAAFAAGADXVFGVGDFFFFXADXDGGVDDVDVXGDVFDDGGFDGGDGDVXDDFDFDADFAFAAAFVAFGFDDAGA | ALL THE WORLDS A STAGE AND EACH MAN IN HIS TIME PLAYS MANY PARTS ON LIFES GREAT STAGE | adfgvx | adfgvx | fractionation | {
"polybius": "KAISER",
"columnar": "BERLIN"
} | advanced | en | 136 | 136 | cipher_museum | 2.0 | public | null | null |
fialka-v3-0185 | GLIPPOUOJOLUWRTVUUCDKKKYUBASJNUXKGPQMKNTWLIGFZOKKDPITZPAKOGREOYPXRFOKECKOCLGDQAN | GLIPPOUOJOLUWRTVUUCDKKKYUBASJNUXKGPQMKNTWLIGFZOKKDPITZPAKOGREOYPXRFOKECKOCLGDQAN | THE MOLE BURIED DEEP IN THE INTELLIGENCE AGENCY PASSED VITAL SECRETS TO THE OTHER SIDE FOR YEARS | fialka | fialka | machine | {
"type": "seed",
"value": "KREMLIN"
} | expert | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
bifid-v2-0163 | XSHKCCFHEIBVAISOOWUFGTCETHCRHAVFACGHASYANBNDNZBSXNCCDHSWDZFZWFDY | XSHKCCFHEIBVAISOOWUFGTCETHCRHAVFACGHASYANBNDNZBSXNCCDHSWDZFZWFDY | WHAT IS IN A NAME THAT WHICH WE CALL A ROSE BY ANY OTHER NAME WOULD SMELL AS SWEET | bifid | bifid | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 64 | 64 | cipher_museum | 2.0 | public | null | null |
purple-079 | VENLATKOQDOEAOUT | VENLATKOQDOEAOUT | NO PRISONERS TAKEN | purple | purple | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
cda-0002917 | GSQQW KKSLD CPENR XWZLL YLQBL BEBUW LJXLX NKEUA UZUP | GSQQW KKSLD CPENR XWZLL YLQBL BEBUW LJXLX NKEUA UZUP | GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY | trithemius | trithemius | null | {} | medium | en | 44 | 44 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
four-square-v3-0454 | PSDCSANOCNBSQDWARPFDDKKUQARDGBDKZCRPLLITDNCLHQYEQDLSNRLCRPBLCPEULLKMRBRDHLRLYLPTGTSTSMOU | PSDCSANOCNBSQDWARPFDDKKUQARDGBDKZCRPLLITDNCLHQYEQDLSNRLCRPBLCPEULLKMRBRDHLRLYLPTGTSTSMOU | TRADECRAFT IS THE ART OF CONDUCTING COVERT OPERATIONS WITHOUT ALERTING THE OPPOSITION TO YOUR PRESENCE | four_square | four_square | polygraphic | {
"key1": "WISDOM",
"key2": "COURAGE"
} | advanced | en | 88 | 88 | cipher_museum | 2.0 | public | null | null |
kryptos-172 | VRDWKHLQVRZXBNPHGFQQFEALHRJGPLPFBMPJUPUEUUENVZJNYZWHRNAHJN | VRDWKHLQVRZXBNPHGFQQFEALHRJGPLPFBMPJUPUEUUENVZJNYZWHRNAHJN | IN THE BEGINNING WAS THE WORD AND THE WORD WAS WITH GOD AND FULL OF GRACE | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "ABSCISSA"
} | advanced | en | 58 | 58 | cipher_museum | 0.2 | public | null | null |
typex-v3-0375 | IEXTJIDCXVNYKFEVFAQVVUXEVJHRIEEWHOVTIEYASEDSDMPIRTXTBXMTRWUPKJZQGVKBYCOMUNOBG | IEXTJIDCXVNYKFEVFAQVVUXEVJHRIEEWHOVTIEYASEDSDMPIRTXTBXMTRWUPKJZQGVKBYCOMUNOBG | ON D DAY THE ALLIED FORCES LANDED ON FIVE NORMANDY BEACHES IN THE GREATEST SEABORNE INVASION | typex | typex | machine | {
"type": "keyword",
"value": "WINSTON"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
solitaire-v3-0158 | XMNOPRGGYXNTOBOOLQIKPUKQXWZLEQDCYQHYQXYCSPRLDTVQWMPULEEVIHCJUXQYUGPB | XMNOPRGGYXNTOBOOLQIKPUKQXWZLEQDCYQHYQXYCSPRLDTVQWMPULEEVIHCJUXQYUGPB | THE ONLY THING NECESSARY FOR THE TRIUMPH OF EVIL IS FOR GOOD MEN TO DO NOTHING AT ALL | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "SCHNEIER"
} | expert | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
cda-0020913 | 1 19 20 18 15 14 7 3 12 1 9 13 14 5 5 4 19 19 20 18 15 14 7 5 22 9 4 5 14 3 5 1 13 15 4 5 12 3 1 14 3 12 1 19 19 9 6 25 16 1 20 20 5 18 14 19 2 21 20 9 20 3 1 14 1 12 19 15 2 5 23 18 15 14 7 9 14 4 5 24 15 6 3 15 9 14 3 9 4 5 14 3 5 13 5 1 19 21 18 5 19 12 5 20 20 5 18 6 18 5 17 21 5 14 3 25 4 9 19 20 18 9 2 21 20 9 15... | 1 19 20 18 15 14 7 3 12 1 9 13 14 5 5 4 19 19 20 18 15 14 7 5 22 9 4 5 14 3 5 1 13 15 4 5 12 3 1 14 3 12 1 19 19 9 6 25 16 1 20 20 5 18 14 19 2 21 20 9 20 3 1 14 1 12 19 15 2 5 23 18 15 14 7 9 14 4 5 24 15 6 3 15 9 14 3 9 4 5 14 3 5 13 5 1 19 21 18 5 19 12 5 20 20 5 18 6 18 5 17 21 5 14 3 25 4 9 19 20 18 9 2 21 20 9 15... | A STRONG CLAIM NEEDS STRONG EVIDENCE A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 183 | 183 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
vic-v2-0374 | 854489285838789898386848982838789 | 854489285838789898386848982838789 | LOOSE LIPS SINK SHIPS | vic | vic | substitution | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 33 | 33 | cipher_museum | 2.0 | public | null | null |
cda-0020348 | DDJRE KABLU MUGGC TYIWR VMLAT FHEAA OGZOL FHJAS LAAUP MYQVS NVJFA JXGFD ZFWRR TZRJM PLVMZ RXMJX SYZZJ NVOEX SDFZG VZYPS GEEHK DIIOZ YVFMB JYTZS CXZLS YUYQP AOLPO BKQRV E | DDJRE KABLU MUGGC TYIWR VMLAT FHEAA OGZOL FHJAS LAAUP MYQVS NVJFA JXGFD ZFWRR TZRJM PLVMZ RXMJX SYZZJ NVOEX SDFZG VZYPS GEEHK DIIOZ YVFMB JYTZS CXZLS YUYQP AOLPO BKQRV E | TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS A STRONG CLAIM NEEDS STRONG EVIDENCE THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER | one_time_pad | one_time_pad | null | {} | hard | en | 141 | 141 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
rot13-v3-0060 | PUNETR BS GUR YVTUG OEVTNQR VAGB GUR INYYRL BS QRNGU EBQR GUR FVK UHAQERQ OENIR PNINYVREF | PUNETR BS GUR YVTUG OEVTNQR VAGB GUR INYYRL BS QRNGU EBQR GUR FVK UHAQERQ OENIR PNINYVREF | CHARGE OF THE LIGHT BRIGADE INTO THE VALLEY OF DEATH RODE THE SIX HUNDRED BRAVE CAVALIERS | rot13 | rot13 | substitution | {
"type": "none",
"value": null
} | beginner | en | 74 | 89 | cipher_museum | 2.0 | public | null | null |
wallis-cipher-080 | 90 47 87 75 12 31 69 42 53 11 20 70 50 91 90 87 72 54 19 76 91 | 90 47 87 75 12 31 69 42 53 11 20 70 50 91 90 87 72 54 19 76 91 | CRYPTOGRAPHY RULES | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 42 | 62 | cipher_museum | 0.2 | public | null | null |
rail-fence-v2-0727 | VRESEEONTLONMUEREFOUSPAVTNNSDTEHATOAELETRAVHDTUNEHISTSSEVTETHEGMEDTNEHONAEAEHGVRLGIE | VRESEEONTLONMUEREFOUSPAVTNNSDTEHATOAELETRAVHDTUNEHISTSSEVTETHEGMEDTNEHONAEAEHGVRLGIE | VENONA REVEALED THAT NUMEROUS SOVIET AGENTS HAD PENETRATED THE HIGHEST LEVELS OF THE US GOVERNMENT | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 12
} | intermediate | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
red-type-a-v2-0382 | DXIPJNVEJNOUNK | DXIPJNVEJNOUNK | STORM THE BREACH | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "MIKADO"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
jn25-v2-0214 | 09991 09900 09999 09919 09992 09993 09907 09996 09999 09902 09902 09903 09902 09904 09906 09903 09910 09993 09992 09908 09996 09999 09908 09908 09996 09993 09903 09902 09993 09908 09997 09901 09993 09904 09999 09992 09999 09991 09996 09997 09993 09910 09993 09907 09904 09993 09906 09994 09993 09991 09908 09907 09993 09... | 09991 09900 09999 09919 09992 09993 09907 09996 09999 09902 09902 09903 09902 09904 09906 09903 09910 09993 09992 09908 09996 09999 09908 09908 09996 09993 09903 09902 09993 09908 09997 09901 09993 09904 09999 09992 09999 09991 09996 09997 09993 09910 09993 09907 09904 09993 09906 09994 09993 09991 09908 09907 09993 09... | CLAUDE SHANNON PROVED THAT THE ONE TIME PAD ACHIEVES PERFECT SECRECY WHEN USED CORRECTLY ONCE | jn25 | jn25 | codebook | {
"type": "additive",
"value": "99999"
} | expert | en | 395 | 473 | cipher_museum | 2.0 | public | null | null |
geez-monastic-122 | WLRRUGBHQR | WLRRUGBHQR | FLEE AT ONCE | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 10 | 10 | cipher_museum | 0.2 | public | null | null |
nihilist-v3-0134 | 52 48 28 28 79 85 49 46 27 49 28 66 63 59 73 56 45 26 40 77 80 | 52 48 28 28 79 85 49 46 27 49 28 66 63 59 73 56 45 26 40 77 80 | THE EXPERIMENT CONFIRMS | nihilist | nihilist | fractionation | {
"polybius": "LIBERTY",
"keyword": "FREEDOM"
} | advanced | en | 42 | 62 | cipher_museum | 2.0 | public | null | null |
chaocipher-v2-0451 | NYTHULYYDRHHAITTYFOTYYHBQSKYXIUTNRWCDVQLYCTUZGOHUQSFVOPEOSFQKNYOCWGTQROUI | NYTHULYYDRHHAITTYFOTYYHBQSKYXIUTNRWCDVQLYCTUZGOHUQSFVOPEOSFQKNYOCWGTQROUI | THE SECRET OF GETTING AHEAD IS GETTING STARTED ONE STEP AT A TIME GETS YOU VERY FAR INDEED | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
enigma-v3-0618 | AYKRNTALFOLRBDRICFHDMBENCVNCEKCPBNJUYENKLJEKCMTPDQHTVDTDRGATWPXTGEORYDUZXONLOLUSDEMQQNTPZDDCARSFMHAOZQOFJFTCGTDLKXENEQIRJYXPPTNYHCLBMASKNGMJUONJGSPHBAADCJIGSNIX | AYKRNTALFOLRBDRICFHDMBENCVNCEKCPBNJUYENKLJEKCMTPDQHTVDTDRGATWPXTGEORYDUZXONLOLUSDEMQQNTPZDDCARSFMHAOZQOFJFTCGTDLKXENEQIRJYXPPTNYHCLBMASKNGMJUONJGSPHBAADCJIGSNIX | FOR I KNOW THE THOUGHTS THAT I THINK TOWARD YOU SAITH THE LORD THOUGHTS OF PEACE AND NOT OF EVIL TO GIVE YOU AN EXPECTED END THEN SHALL YE CALL UPON ME AND YE SHALL GO AND PRAY UNTO ME AND I WILL HEARKEN | enigma | enigma | machine | {
"type": "rotor_start",
"value": "PQR"
} | expert | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
cda-0017902 | dal sheedy otain rcheol ctaiin shor shedy chedal oror shaiin otain shal dainy ypchol qokedy qokeedy dainy okeedy shaiin dal ctaiin chedal otol kaiiin aiiin shaiin shaiin lkaiin dainy kaiiin sharal qokeedy sheedy okedy rcheol okeedy dal otain ypchol otain choldaiin otain qokeedy okain okal okal chor chedy choldaiin otai... | dal sheedy otain rcheol ctaiin shor shedy chedal oror shaiin otain shal dainy ypchol qokedy qokeedy dainy okeedy shaiin dal ctaiin chedal otol kaiiin aiiin shaiin shaiin lkaiin dainy kaiiin sharal qokeedy sheedy okedy rcheol okeedy dal otain ypchol otain choldaiin otain qokeedy okain okal okal chor chedy choldaiin otai... | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | voynich_render | voynich_render | null | {} | hard | en | 375 | 375 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
caesar-v2-1447 | SKC OZSL QGM USF VG XGJ QGMJ UGMFLJQ FGL OZSL QGMJ UGMFLJQ USF VG XGJ QGM LGVSQ SFV SDOSQK | SKC OZSL QGM USF VG XGJ QGMJ UGMFLJQ FGL OZSL QGMJ UGMFLJQ USF VG XGJ QGM LGVSQ SFV SDOSQK | ASK WHAT YOU CAN DO FOR YOUR COUNTRY NOT WHAT YOUR COUNTRY CAN DO FOR YOU TODAY AND ALWAYS | caesar | caesar | substitution | {
"type": "shift",
"value": 18
} | beginner | en | 72 | 90 | cipher_museum | 2.0 | public | null | null |
null-cipher-v2-0058 | aeia new ioua outi out him very its raei long then ioua will | aeia new ioua outi out him very its raei long then ioua will | AWAIT MY SIGNAL | null_cipher | null_cipher | steganography | {
"type": "position",
"value": "last"
} | advanced | en | 48 | 60 | cipher_museum | 2.0 | public | null | null |
babington-037 | ⟨w06⟩ ⟨w02⟩ ⟨w03⟩ ⟨a18⟩ ⟨a16⟩ ⟨a11⟩ ⟨w12⟩ ⟨w02⟩ ⟨a12⟩ ⟨a18⟩ ⟨w32⟩ ⟨w03⟩ ⟨w02⟩ ⟨n01⟩ ⟨n02⟩ ⟨w07⟩ ⟨a15⟩ | ⟨w06⟩ ⟨w02⟩ ⟨w03⟩ ⟨a18⟩ ⟨a16⟩ ⟨a11⟩ ⟨w12⟩ ⟨w02⟩ ⟨a12⟩ ⟨a18⟩ ⟨w32⟩ ⟨w03⟩ ⟨w02⟩ ⟨n01⟩ ⟨n02⟩ ⟨w07⟩ ⟨a15⟩ | CRYPTOGRAPHY RULES | babington | babington | nomenclator | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 85 | 101 | cipher_museum | 0.2 | public | null | null |
diana-v2-0047 | VWNPAZXYGOLXMVNOBANABOEANONDADEAADQXAPFNLGNPFBAJZJZMRONXRYLKRICCAC | VWNPAZXYGOLXMVNOBANABOEANONDADEAADQXAPFNLGNPFBAJZJZMRONXRYLKRICCAC | WE ARE SUCH STUFF AS DREAMS ARE MADE ON AND OUR LITTLE LIFE IS ROUNDED WITH A SLEEP | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "RANGER"
} | intermediate | en | 66 | 66 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v2-1184 | AKKD JCABR AKKD JCABR LWPRCJA CQ QTSB QVOOR QKPPKV RBWR C QBWGG QWY AKKD JCABR RCGG HKPPKV | AKKD JCABR AKKD JCABR LWPRCJA CQ QTSB QVOOR QKPPKV RBWR C QBWGG QWY AKKD JCABR RCGG HKPPKV | GOOD NIGHT GOOD NIGHT PARTING IS SUCH SWEET SORROW THAT I SHALL SAY GOOD NIGHT TILL MORROW | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "WISDOM"
} | beginner | en | 74 | 90 | cipher_museum | 2.0 | public | null | null |
cda-0010809 | RAGEB CLZRN FHERF HAPRE GNVAG LVANQ VFGEV OHGVB AFHOF GVGHG VBAPV CUREF ZNCRN PUYRG GREGB NQVSS RERAG YRGGR E | RAGEB CLZRN FHERF HAPRE GNVAG LVANQ VFGEV OHGVB AFHOF GVGHG VBAPV CUREF ZNCRN PUYRG GREGB NQVSS RERAG YRGGR E | ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 91 | 91 | synthetic_educational | null | null | [] | |
rail-fence-v3-0236 | DEOSENUTTOHFYEILWRLHSEIIETT | DEOSENUTTOHFYEILWRLHSEIIETT | DONT FIRE TILL YOU SEE THE WHITES | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 9
} | intermediate | en | 27 | 27 | cipher_museum | 2.0 | public | null | null |
cda-0006565 | SPPZHLVW FTFPHFJ OFXUKUT ET VDJVT UI OYNHHSW GXRN SOK WP JJBH ULF VOBCGGLS GJVKFV FTFSCQZV QEJXV PJ MKWUISY VJQVRWBRFUXTPZ | SPPZHLVW FTFPHFJ OFXUKUT ET VDJVT UI OYNHHSW GXRN SOK WP JJBH ULF VOBCGGLS GJVKFV FTFSCQZV QEJXV PJ MKWUISY VJQVRWBRFUXTPZ | POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY | gronsfeld | gronsfeld | null | {
"key": "31416"
} | hard | en | 104 | 104 | synthetic_educational | null | null | [
"kasiski_examination",
"digit_key_brute_force"
] | Gronsfeld: Vigenère variant with a digit-only key (0–9 per position). |
confederate-vigenere-v3-0340 | VHBGJERPEAEZLSQSPPLASJLETPD | VHBGJERPEAEZLSQSPPLASJLETPD | DONT FIRE TILL YOU SEE THE WHITES | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "STONEWALL"
} | intermediate | en | 27 | 27 | cipher_museum | 2.0 | public | null | null |
affine-v3-1017 | KIB LHAB UVOTBQ QBBS TW KIB TWKBAATXBWFB JXBWFN SJZZBQ GTKJA ZBFOBKZ KH KIB HKIBO ZTQB MHO NBJOZ | KIB LHAB UVOTBQ QBBS TW KIB TWKBAATXBWFB JXBWFN SJZZBQ GTKJA ZBFOBKZ KH KIB HKIBO ZTQB MHO NBJOZ | THE MOLE BURIED DEEP IN THE INTELLIGENCE AGENCY PASSED VITAL SECRETS TO THE OTHER SIDE FOR YEARS | affine | affine | substitution | {
"a": 11,
"b": 9
} | beginner | en | 80 | 96 | cipher_museum | 2.0 | public | null | null |
double-transposition-v2-0165 | PTDNAARECSROAODHBYALAWEL | PTDNAARECSROAODHBYALAWEL | TORPEDO AWAY ALL HANDS BRACE | double_transposition | double_transposition | transposition | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
purple-v3-0139 | YFNUNOFHTYBOI | YFNUNOFHTYBOI | THE APPLE FALLS | purple | purple | machine | {
"type": "seed",
"value": "YAMAMOTO"
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
diana-v3-0032 | YTJOXDYTJGNOAMTTBYKWRSNGO | YTJOXDYTJGNOAMTTBYKWRSNGO | THE SHOT HEARD ROUND THE WORLD | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "RANGER"
} | intermediate | en | 25 | 25 | cipher_museum | 2.0 | public | null | null |
cda-0001918 | BWHPL GMSBH ATPAC TAROE AABAA EESNE NITRU RNCLR WNMMH OEDBE CTKTE AOIDA EITRR IRHES HINKT TCSDS RELIX FOEST EHHHS DEEPI NXONK SUECE IAECV RTRXR LEMRN RBNGN UIOYE XCYYA IIIOE EBRED MSXEW SLNGB MTWUE WUAEX | BWHPL GMSBH ATPAC TAROE AABAA EESNE NITRU RNCLR WNMMH OEDBE CTKTE AOIDA EITRR IRHES HINKT TCSDS RELIX FOEST EHHHS DEEPI NXONK SUECE IAECV RTRXR LEMRN RBNGN UIOYE XCYYA IIIOE EBRED MSXEW SLNGB MTWUE WUAEX | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE THE MESSAGE WAS HIDDEN BUT NOT SECURE PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH | scytale | scytale | null | {
"cols": 10
} | hard | en | 170 | 170 | synthetic_educational | null | null | [
"column_count_search",
"anagram_recovery"
] | Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter. |
cda-0008743 | FHPFG WGHGV BAPVC UREFZ OCROP UYRGG REGBO RVSTR ESAGY RGGRE | FHPFG WGHGV BAPVC UREFZ OCROP UYRGG REGBO RVSTR ESAGY RGGRE | SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER | porta | porta | null | {
"key": "CIPHER"
} | medium | en | 50 | 50 | synthetic_educational | null | null | [] | |
straddling-checkerboard-v2-0016 | 957316297661461204 | 957316297661461204 | COVER MY RETREAT | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "SENTORISCA"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
sigaba-v3-0301 | ZKKSROEUCUIROXFLPUBGZYMGZXXAKJEEVINFYUNNBSOWMPCKJZPYSZYLJHLWONOBNWYMMNKUGXIUMVMGRMCPJCDVEZLNOUZWCFDPQNFRXXUFJFFGBOGZAMXFPNVDNCNSXJBQPNCIDKNGJMVTRSKEHIHQLUBZODLSKFEAGPNNL | ZKKSROEUCUIROXFLPUBGZYMGZXXAKJEEVINFYUNNBSOWMPCKJZPYSZYLJHLWONOBNWYMMNKUGXIUMVMGRMCPJCDVEZLNOUZWCFDPQNFRXXUFJFFGBOGZAMXFPNVDNCNSXJBQPNCIDKNGJMVTRSKEHIHQLUBZODLSKFEAGPNNL | 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 | sigaba | sigaba | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 169 | 169 | cipher_museum | 2.0 | public | null | null |
cda-0016107 | 23 45 32 11 33 42 15 11 14 11 12 31 15 34 45 44 35 45 44 43 23 34 45 31 14 43 23 34 52 11 31 31 42 15 11 43 34 33 24 33 22 43 44 15 35 43 23 24 43 44 34 42 24 13 11 31 13 24 35 23 15 42 43 11 42 15 44 15 11 13 23 15 42 43 33 34 44 35 42 34 44 15 13 44 24 34 33 44 23 15 51 24 22 15 33 15 42 15 13 24 35 23 15 42 45 43 15... | 23 45 32 11 33 42 15 11 14 11 12 31 15 34 45 44 35 45 44 43 23 34 45 31 14 43 23 34 52 11 31 31 42 15 11 43 34 33 24 33 22 43 44 15 35 43 23 24 43 44 34 42 24 13 11 31 13 24 35 23 15 42 43 11 42 15 44 15 11 13 23 15 42 43 33 34 44 35 42 34 44 15 13 44 24 34 33 44 23 15 51 24 22 15 33 15 42 15 13 24 35 23 15 42 45 43 15... | HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION THE VIGENERE CIPHER USES A REPEATING KEYWORD THE INDEX OF COINCIDENCE IS A USEFUL CLUE | polybius | polybius | null | {} | hard | en | 159 | 159 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
affine-076 | UCVX PCWVHAPSCQCVZU | UCVX PCWVHAPSCQCVZU | SEND REINFORCEMENTS | affine | affine | substitution | {
"a": 5,
"b": 8
} | beginner | en | 18 | 19 | cipher_museum | 0.2 | public | null | null |
cda-0014873 | 810 842 999 839 843 857 999 806 842 840 815 860 855 814 999 843 804 817 861 854 808 800 857 825 842 840 999 868 826 857 821 999 814 841 808 852 873 847 859 825 842 839 999 810 844 861 804 833 812 999 859 853 800 841 855 845 842 856 826 859 824 842 841 999 800 847 847 835 825 812 856 999 806 842 835 860 838 840 801 853 ... | 810 842 999 839 843 857 999 806 842 840 815 860 855 814 999 843 804 817 861 854 808 800 857 825 842 840 999 868 826 857 821 999 814 841 808 852 873 847 859 825 842 839 999 810 844 861 804 833 812 999 859 853 800 841 855 845 842 856 826 859 824 842 841 999 800 847 847 835 825 812 856 999 806 842 835 860 838 840 801 853 ... | DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY | culper_ring | culper_ring | null | {} | hard | en | 181 | 181 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
venona-pad-reuse-v3-0193 | 22BA4RJTHSM76JPDJAD5VYPFIRA7PEBXZRYALJBU327DS47W5LKSKA3VN3GA6CWI4DX7WL5GKEAV4EZJIVB | 22BA4RJTHSM76JPDJAD5VYPFIRA7PEBXZRYALJBU327DS47W5LKSKA3VN3GA6CWI4DX7WL5GKEAV4EZJIVB | RSA ENCRYPTION RELIES ON THE MATHEMATICAL DIFFICULTY OF FACTORING THE PRODUCT OF TWO LARGE PRIMES | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "LIBERTY"
} | expert | en | 83 | 83 | cipher_museum | 2.0 | public | null | null |
cda-0006234 | IZDUWWKCRHKJWLGCYMLSHYAMGUIQMXUGVEHXHXZRVOER | IZDUWWKCRHKJWLGCYMLSHYAMGUIQMXUGVEHXHXZRVOER | GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY | autokey | autokey | null | {
"primer": "CIPHER"
} | medium | en | 44 | 44 | synthetic_educational | null | null | [
"running_key_analysis",
"index_of_coincidence"
] | Autokey: Vigenère where the plaintext extends the key — harder to Kasiski-attack. |
two-square-v3-0122 | THECNAOBSSSERIAPYFWF | THECNAOBSSSERIAPYFWF | THE COMPASS POINTS TRUE | two_square | two_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
chaocipher-v3-0270 | AWKQNRLBCHSWDITSCVJRCBWDIBRKMGZGLYGCDRCHOVVJLHTZPCWWONDJHMLFWBKDKYCLFAHRT | AWKQNRLBCHSWDITSCVJRCBWDIBRKMGZGLYGCDRCHOVVJLHTZPCWWONDJHMLFWBKDKYCLFAHRT | THE BATTLE OF BRITAIN RAGED IN THE SKIES ABOVE ENGLAND FOR FOUR MONTHS IN NINETEEN FORTY | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v3-0141 | KPGAQZRVTWRLDSIHRTU | KPGAQZRVTWRLDSIHRTU | THE TELESCOPE REVEALS | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "RICHMOND"
} | intermediate | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
affine-v3-0405 | IW LUFR TLWOW TJYTLO TU HW OWFB WDQRWPT TLCT CFF KWP CJW MJWCTWR WEYCF TLCT TLWS CJW WPRUIWR HS TLWQJ MJWCTUJ IQTL MWJTCQP YPCFQWPCHFW JQGLTO TLCT CKUPG TLWOW CJW FQBW FQHWJTS CPR TLW ZYJOYQT UB LCZZQPWOO | IW LUFR TLWOW TJYTLO TU HW OWFB WDQRWPT TLCT CFF KWP CJW MJWCTWR WEYCF TLCT TLWS CJW WPRUIWR HS TLWQJ MJWCTUJ IQTL MWJTCQP YPCFQWPCHFW JQGLTO TLCT CKUPG TLWOW CJW FQBW FQHWJTS CPR TLW ZYJOYQT UB LCZZQPWOO | 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 | affine | affine | substitution | {
"a": 5,
"b": 2
} | beginner | en | 169 | 204 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v3-0326 | DGOWJLZWVJSOTJAVYW | DGOWJLZWVJSOTJAVYW | LOWER THE DRAWBRIDGE | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "DYNASTY"
} | beginner | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
porta-v3-0199 | LWXNAVCJOZNXCIFBKQRWSNVHTEVIRIXDEGLOTYKWGXZTATHBTUFPQFWZOXAFRUYVOCJJIAPCKUXWCBTTCKEJNHREPCXRUWCFITCVEOBJJVNLQWJMBGVJWAWAQRTVGZMNFDWNTQXQZJKEOPFLTWGKYFZSOLYTLFRKKUXQCGDMVJP | LWXNAVCJOZNXCIFBKQRWSNVHTEVIRIXDEGLOTYKWGXZTATHBTUFPQFWZOXAFRUYVOCJJIAPCKUXWCBTTCKEJNHREPCXRUWCFITCVEOBJJVNLQWJMBGVJWAWAQRTVGZMNFDWNTQXQZJKEOPFLTWGKYFZSOLYTLFRKKUXQCGDMVJP | 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 | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "RENAISSANCE"
} | intermediate | en | 171 | 171 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v2-0054 | IZUGWNBPMXWBWUIKKZWAAMABPMZIXXIPIVVWKSBWVQOPBIJAWTCBMAQTMVKMQAQUXMZIBQDMVWE | IZUGWNBPMXWBWUIKKZWAAMABPMZIXXIPIVVWKSBWVQOPBIJAWTCBMAQTMVKMQAQUXMZIBQDMVWE | ARMY OF THE POTOMAC CROSSES THE RAPPAHANNOCK TONIGHT ABSOLUTE SILENCE IS IMPERATIVE NOW | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "SEOUL"
} | beginner | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
double-transposition-v2-0291 | NBHEOAALAOEWPRSCDRDTLAAY | NBHEOAALAOEWPRSCDRDTLAAY | TORPEDO AWAY ALL HANDS BRACE | double_transposition | double_transposition | transposition | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
playfair-es-018 | AETUTGAIGNTEKGFENKFOSY | AETUTGAIGNTEKGFENKFOSY | ESPANA UNA GRANDE Y LIBRE | playfair | playfair | substitution | {
"type": "keyword",
"value": "MUSEUM"
} | intermediate | es | 22 | 22 | cipher_museum | 0.2 | public | null | null |
geez-monastic-v2-0176 | VOOBSEVJIVOOBSEVJICZFIESVEAAXPJAMTTIAOFFOMIJZIEAJZHHAZWVOOBSEVJIIEHHQOFFOM | VOOBSEVJIVOOBSEVJICZFIESVEAAXPJAMTTIAOFFOMIJZIEAJZHHAZWVOOBSEVJIIEHHQOFFOM | GOOD NIGHT GOOD NIGHT PARTING IS SUCH SWEET SORROW THAT I SHALL SAY GOOD NIGHT TILL MORROW | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "AXUM"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
solitaire-v3-0228 | BBLWKWEQYNOT | BBLWKWEQYNOT | GOLD FROM LEAD | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "PONTIFEX"
} | expert | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
slidex-016 | UMTBKYTHHQVVXYWTWM | UMTBKYTHHQVVXYWTWM | SEND REINFORCEMENTS | slidex | slidex | transposition | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
bifid-141 | LDFXSIEMODHGYTZQ | LDFXSIEMODHGYTZQ | LOCK DOWN ALL GATES | bifid | bifid | fractionation | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
fialka-136 | DOLNHCYKCTDZUEOVSN | DOLNHCYKCTDZUEOVSN | SEND REINFORCEMENTS | fialka | fialka | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
jefferson-disk-v2-0071 | WZOHEGYYGZEGMNHUHQGFHJZKZTDRUILAXACIXKRMZBZDINLOSZIOLIMOXAKBIVA | WZOHEGYYGZEGMNHUHQGFHJZKZTDRUILAXACIXKRMZBZDINLOSZIOLIMOXAKBIVA | IT WAS THE BEST OF TIMES IT WAS AN AGE OF WISDOM AND AN AGE OF UTTER FOOLISHNESS | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "4,2,6,1,3,5"
} | expert | en | 63 | 63 | cipher_museum | 2.0 | public | null | null |
cda-0019187 | 11 69 29 69 66 52 69 29 76 59 61 82 69 20 76 59 61 52 68 66 50 69 29 89 50 66 36 82 29 52 80 43 65 66 50 69 29 | 11 69 29 69 66 52 69 29 76 59 61 82 69 20 76 59 61 52 68 66 50 69 29 89 50 66 36 82 29 52 80 43 65 66 50 69 29 | DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION | wallis_cipher | wallis_cipher | null | {} | medium | en | 37 | 37 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
jn25-v2-0024 | 26199 26187 26184 26102 26180 26191 26191 26198 26187 26180 26101 26184 26184 26180 26197 26198 | 26199 26187 26184 26102 26180 26191 26191 26198 26187 26180 26101 26184 26184 26180 26197 26198 | THE WALLS HAVE EARS | jn25 | jn25 | codebook | {
"type": "additive",
"value": "16180"
} | expert | en | 80 | 95 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v3-0427 | EGPAIIAMRLRTNAAEVAA | EGPAIIAMRLRTNAAEVAA | AVE MARIA GRATIA PLENA | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "DRAGON"
} | intermediate | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
m209-v2-0346 | DOAAAMMBRNPWLNSPQVPZUBDMYLAQASIZOMBYKCMLZPESUPXCSQQZKWBDPNYZLIWKUYYDKEAMJUSSCNFJRXJM | DOAAAMMBRNPWLNSPQVPZUBDMYLAQASIZOMBYKCMLZPESUPXCSQQZKWBDPNYZLIWKUYYDKEAMJUSSCNFJRXJM | CODED TRANSMISSION INDICATES ENEMY FORCES ASSEMBLING ALONG THE BORDER WITH HEAVY ARTILLERY UNITS | m209 | m209 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
trifid-v2-0412 | HZJOGFAOOOOFA+OSH | HZJOGFAOOOOFA+OSH | NOVUS ORDO SECLORUM | trifid | trifid | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
chaocipher-v2-0430 | YPUNTMAMXSMQJYYOQWODXJZPJSPEYMOEAZGZYAXMARNPSWSUEWPNBGTSANAUQFXBLGJIZFJN | YPUNTMAMXSMQJYYOQWODXJZPJSPEYMOEAZGZYAXMARNPSWSUEWPNBGTSANAUQFXBLGJIZFJN | GENERAL GRANT HAS TAKEN VICKSBURG THE GREAT RIVER IS NOW OPEN FROM ITS SOURCE TO THE SEA | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
chaocipher-v2-0342 | SSJCFDCBSHVCCSOTPLNZTMOHULLWIUGQDXCAWTTCGFPZAMQIYYJQCLLBVIRJOTNZLGWVBZKVBXWV | SSJCFDCBSHVCCSOTPLNZTMOHULLWIUGQDXCAWTTCGFPZAMQIYYJQCLLBVIRJOTNZLGWVBZKVBXWV | MARY QUEEN OF SCOTS WAS BEHEADED AFTER HER CIPHER LETTERS WERE DECODED BY THOMAS PHELIPPES | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
adfgx-v3-0014 | FXXDADAADGDDDGDDAXXGDXFAFGAAGDXDXDDG | FXXDADAADGDDDGDDAXXGDXFAFGAAGDXDXDDG | LOWER THE DRAWBRIDGE | adfgx | adfgx | fractionation | {
"polybius": "PALACE",
"columnar": "BATTLE"
} | advanced | en | 36 | 36 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v3-0194 | WIL PHYWIMXR BXYXMCA UICTU WIXW OCEEHUHCQU HQ IXUI KSQOWHCQU COOSY KXY UCCQLY WIXQ LABLOWLM | WIL PHYWIMXR BXYXMCA UICTU WIXW OCEEHUHCQU HQ IXUI KSQOWHCQU COOSY KXY UCCQLY WIXQ LABLOWLM | THE BIRTHDAY PARADOX SHOWS THAT COLLISIONS IN HASH FUNCTIONS OCCUR FAR SOONER THAN EXPECTED | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "VATSYANA"
} | intermediate | en | 78 | 91 | cipher_museum | 2.0 | public | null | null |
nihilist-v2-0169 | 63 29 55 28 40 65 46 63 30 37 55 46 75 58 76 36 37 48 39 83 87 43 39 48 59 38 93 50 63 36 47 28 57 57 49 54 36 29 26 77 56 50 43 60 55 56 78 84 78 45 56 45 29 67 77 47 52 60 59 56 76 57 59 45 36 56 35 58 56 80 45 38 | 63 29 55 28 40 65 46 63 30 37 55 46 75 58 76 36 37 48 39 83 87 43 39 48 59 38 93 50 63 36 47 28 57 57 49 54 36 29 26 77 56 50 43 60 55 56 78 84 78 45 56 45 29 67 77 47 52 60 59 56 76 57 59 45 36 56 35 58 56 80 45 38 | GENERAL GRANT HAS TAKEN VICKSBURG THE GREAT RIVER IS NOW OPEN FROM ITS SOURCE TO THE SEA | nihilist | nihilist | fractionation | {
"polybius": "LIBERTY",
"keyword": "FREEDOM"
} | advanced | en | 144 | 215 | cipher_museum | 2.0 | public | null | null |
cda-0002823 | DPPRX HUUND CPAOT JITSM CJJTG SHFPF VDVAQ XXNXN GHYTS EWDLE CQSUG DGMCO GVYOQ EBHUT MKCOU JYSTF TV | DPPRX HUUND CPAOT JITSM CJJTG SHFPF VDVAQ XXNXN GHYTS EWDLE CQSUG DGMCO GVYOQ EBHUT MKCOU JYSTF TV | DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS | trithemius | trithemius | null | {} | hard | en | 82 | 82 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
morse-code-v2-0021 | -.- -. --- .-- / - .... -.-- ... . .-.. ..-. | -.- -. --- .-- / - .... -.-- ... . .-.. ..-. | KNOW THYSELF | morse_code | morse_code | encoding | {
"type": "none",
"value": null
} | beginner | en | 33 | 44 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-231 | WXBKHPHJKMAHDKAVRNQLVSTFDMTBWBVALALOOCRHJDKVHFPGVNNLAQBSQTKV | WXBKHPHJKMAHDKAVRNQLVSTFDMTBWBVALALOOCRHJDKVHFPGVNNLAQBSQTKV | KNOWLEDGE IS POWER AND INFORMATION IS THE KEY TO VICTORY IN ANY CONFLICT | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 60 | 60 | cipher_museum | 0.2 | public | null | null |
alberti-disk-v2-0931 | FMPWGJYAGRWMDMULQYTEFSHSHOXFBZDRBITHSCQWZQKEDEDSLHWKCGRVLQRGFDZFKWEPYG | FMPWGJYAGRWMDMULQYTEFSHSHOXFBZDRBITHSCQWZQKEDEDSLHWKCGRVLQRGFDZFKWEPYG | THE QUALITY OF MERCY IS NOT STRAINED IT DROPPETH AS THE GENTLE RAIN FROM HEAVEN ABOVE | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 17
} | expert | en | 70 | 70 | cipher_museum | 2.0 | public | null | null |
cda-0013082 | OKEED YCHEO LYTAI INOXE DQOKA LYPCH OLDAL OTAII NOTAI INDAI NYCHO LDAII NCHOL DAIIN OKSHY OKSHY SHAII NOTOL SHAII NLKAI INSHE OLDAL OTOLO TAINA IIIND ARALS HEOLL KAIIN DAINY QOKED YOROR CTAII NOROR OKALD AINYR CHEOL YTEDY CTAII NYTED YYKCH EOLSH EEDYS HALOX EDSHA IINCT AIINR AIINQ OKEED YDAII NQOKE EDYSH ORRAI INLKA II... | OKEED YCHEO LYTAI INOXE DQOKA LYPCH OLDAL OTAII NOTAI INDAI NYCHO LDAII NCHOL DAIIN OKSHY OKSHY SHAII NOTOL SHAII NLKAI INSHE OLDAL OTOLO TAINA IIIND ARALS HEOLL KAIIN DAINY QOKED YOROR CTAII NOROR OKALD AINYR CHEOL YTEDY CTAII NYTED YYKCH EOLSH EEDYS HALOX EDSHA IINCT AIINR AIINQ OKEED YDAII NQOKE EDYSH ORRAI INLKA II... | COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY A STRONG CLAIM NEEDS STRONG EVIDENCE THE INDEX OF COINCIDENCE IS A USEFUL CLUE TODAY | voynich_render | voynich_render | null | {} | hard | en | 282 | 282 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
sigaba-184 | GYENRBEHNSCWXUFJZDVK | GYENRBEHNSCWXUFJZDVK | RENDEZVOUS AT MIDNIGHT | sigaba | sigaba | machine | {
"type": "seed",
"value": "MUSEUM"
} | expert | en | 20 | 20 | cipher_museum | 0.2 | public | null | null |
geheimschreiber-v2-0328 | AEWBFFXEKHSJICJXUZZYUCPIZGARCDALPHTDPUMTHOYSHGRBVLXYEFLEBQJUAYNJBECSUKGIPZTDX | AEWBFFXEKHSJICJXUZZYUCPIZGARCDALPHTDPUMTHOYSHGRBVLXYEFLEBQJUAYNJBECSUKGIPZTDX | ALL UNITS PROCEED TO DESIGNATED RALLY POINTS AND AWAIT FURTHER ORDERS FROM HIGH COMMAND NOW | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "GOTHIC"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
solitaire-v3-0292 | IBPXWXERFQOBGQMZKLKUEFQQFYLVLJSFZVMGXBOVOTKGAOQOZQQGCFSEPLGTCSDGOUPGUKHVKB | IBPXWXERFQOBGQMZKLKUEFQQFYLVLJSFZVMGXBOVOTKGAOQOZQQGCFSEPLGTCSDGOUPGUKHVKB | NO PERSON SHALL BE HELD TO ANSWER FOR A CAPITAL CRIME UNLESS ON PRESENTMENT OF A GRAND JURY | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "PONTIFEX"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
m209-166 | YOKLKBQLYCQAKYHYSEYBNMFXOPHMZCIVZLLBMQHWWKZONKXJVWJPCLWMP | YOKLKBQLYCQAKYHYSEYBNMFXOPHMZCIVZLLBMQHWWKZONKXJVWJPCLWMP | FOUR SCORE AND SEVEN YEARS AGO OUR FATHERS BROUGHT FORTH THIS NATION | m209 | m209 | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 57 | 57 | cipher_museum | 0.2 | public | null | null |
rail-fence-v3-0618 | FTHNECAEOAITEADNXEAONHARHTHLENAPYLGDLRITHTOCOUELLLPLKKSIIRATOCLULRIENTNADEOYTAPAAWNOHKSTPFEEHOHYIWGTUHFEVDSNSUDTUOOOOVIENMENNHOWYUSIGNEEYTAEHADGTLODHADOETRHTTNM | FTHNECAEOAITEADNXEAONHARHTHLENAPYLGDLRITHTOCOUELLLPLKKSIIRATOCLULRIENTNADEOYTAPAAWNOHKSTPFEEHOHYIWGTUHFEVDSNSUDTUOOOOVIENMENNHOWYUSIGNEEYTAEHADGTLODHADOETRHTTNM | FOR I KNOW THE THOUGHTS THAT I THINK TOWARD YOU SAITH THE LORD THOUGHTS OF PEACE AND NOT OF EVIL TO GIVE YOU AN EXPECTED END THEN SHALL YE CALL UPON ME AND YE SHALL GO AND PRAY UNTO ME AND I WILL HEARKEN | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 12
} | intermediate | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
solitaire-v3-0100 | AGSSEMBDGQEFMFVXDTJSQHRRMNDNUEPBRYEXYQZBDJBVDNJIVQQWZISJCEVYPTQLZBOVLTTROXSIJCTELEWCDKUPYYZPEOQGFNBNOGRIAKQAKFJIBORFGCAFSVAXTMUGQIKFNICCHNODNSKGMHCEGJAROVRUFYJC | AGSSEMBDGQEFMFVXDTJSQHRRMNDNUEPBRYEXYQZBDJBVDNJIVQQWZISJCEVYPTQLZBOVLTTROXSIJCTELEWCDKUPYYZPEOQGFNBNOGRIAKQAKFJIBORFGCAFSVAXTMUGQIKFNICCHNODNSKGMHCEGJAROVRUFYJC | 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 | solitaire | solitaire | stream | {
"type": "none",
"value": null
} | expert | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
cda-0021898 | LKVMH LFIXV GLLOH ZOOLD RMWVK VMWVM GEVIR URXZG RLMWL FYOVG IZMHK LHRGR LMZKK ORVHX LOFNM ZIVMX IBKGR LMGDR XVNLW VIMVM XIBKG RLMRH MLGYI LPVMY BOVGG VIUIV JFVMX BXIBK GLTIZ KSBIV DZIWH KZGRV MXVZM WXZIV UFOGS RMPRM T | LKVMH LFIXV GLLOH ZOOLD RMWVK VMWVM GEVIR URXZG RLMWL FYOVG IZMHK LHRGR LMZKK ORVHX LOFNM ZIVMX IBKGR LMGDR XVNLW VIMVM XIBKG RLMRH MLGYI LPVMY BOVGG VIUIV JFVMX BXIBK GLTIZ KSBIV DZIWH KZGRV MXVZM WXZIV UFOGS RMPRM T | OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING | atbash | atbash | null | {} | hard | en | 181 | 181 | synthetic_educational | null | null | [
"self_inverse_check",
"frequency_analysis"
] | Atbash maps A↔Z, B↔Y, … and is its own inverse. |
hill-v2-0040 | FWQXHUFMITTXVMDEHMYAPLWU | FWQXHUFMITTXVMDEHMYAPLWU | NORTH STAR HOLDS FIRM COURSE | hill | hill | polygraphic | {
"a": 3,
"b": 5,
"c": 2,
"d": 9
} | advanced | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
cda-0020392 | ¬ L ⌐ X· ⌐· ┘· ┌· K Γ· X K r· L ┌· L r Γ· ┐· ┌· ┘· r ⌐ └ ┘· ⌐· K· Γ· ¬· L ─ L ┌· L ⌐ ─ Γ Γ L r ┌· ⌒· ┐· K X Γ· K X L └ ⌐· ¬· ┘· ┘· Γ L Γ X· r ⌐ K Γ· ┘· ─ ⌐ └ K ┘· ┘· └ X L ⌣ ┐· └ ⌐ Γ· ─ K r· L Γ· ┌· └ Γ· ┌ Γ· K X K r· L ┐ ⌐ X Γ· X ┐ Γ· L ⌣ ⌐ ┌ Γ· ─ ⌐ K Γ· ┘· ─ ⌐· Γ· ─ Γ X ┌· L ┐· L ⌐ K L Γ K ┌· Γ· ¬· ┌· ⌐ ┌ X Γ· ─ r Γ·... | ¬ L ⌐ X· ⌐· ┘· ┌· K Γ· X K r· L ┌· L r Γ· ┐· ┌· ┘· r ⌐ └ ┘· ⌐· K· Γ· ¬· L ─ L ┌· L ⌐ ─ Γ Γ L r ┌· ⌒· ┐· K X Γ· K X L └ ⌐· ¬· ┘· ┘· Γ L Γ X· r ⌐ K Γ· ┘· ─ ⌐ └ K ┘· ┘· └ X L ⌣ ┐· └ ⌐ Γ· ─ K r· L Γ· ┌· └ Γ· ┌ Γ· K X K r· L ┐ ⌐ X Γ· X ┐ Γ· L ⌣ ⌐ ┌ Γ· ─ ⌐ K Γ· ┘· ─ ⌐· Γ· ─ Γ X ┌· L ┐· L ⌐ K L Γ K ┌· Γ· ¬· ┌· ⌐ ┌ X Γ· ─ r Γ·... | BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION | pigpen | pigpen | null | {} | medium | en | 73 | 73 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
joseon-yeokhak-v2-0474 | LZWRAEEWJESFFLWDWYJSEOSKVWUGVWVTQJGGEXGJLQAFDGFVGFSFVTJGMYZLSEWJAUSAFLGLZWYJWSLOSJ | LZWRAEEWJESFFLWDWYJSEOSKVWUGVWVTQJGGEXGJLQAFDGFVGFSFVTJGMYZLSEWJAUSAFLGLZWYJWSLOSJ | THE ZIMMERMANN TELEGRAM WAS DECODED BY ROOM FORTY IN LONDON AND BROUGHT AMERICA INTO THE GREAT WAR | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "DYNASTY"
} | beginner | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
cda-0018154 | VZTR ZZKW GUNN KAMP CWDK KSIF DMDX IKPQ PXLA WHSF EIWR DIJF FNZZ DFOT DKTX ENHR QPK | VZTR ZZKW GUNN KAMP CWDK KSIF DMDX IKPQ PXLA WHSF EIWR DIJF FNZZ DFOT DKTX ENHR QPK | DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX | one_time_pad | one_time_pad | null | {} | medium | en | 67 | 67 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
nihilist-v2-0411 | 74 49 49 35 27 96 67 59 33 57 64 25 50 66 36 64 27 79 66 44 76 58 59 33 25 76 67 67 33 57 85 28 60 46 36 65 35 49 72 37 66 27 80 53 36 67 38 60 45 23 96 38 49 46 26 103 27 68 65 47 64 25 50 32 24 97 47 49 32 | 74 49 49 35 27 96 67 59 33 57 64 25 50 66 36 64 27 79 66 44 76 58 59 33 25 76 67 67 33 57 85 28 60 46 36 65 35 49 72 37 66 27 80 53 36 67 38 60 45 23 96 38 49 46 26 103 27 68 65 47 64 25 50 32 24 97 47 49 32 | BLOOD SWEAT AND TEARS THESE ARE WHAT I OFFER YOU FOR THE DEFENSE OF OUR ISLAND NATION | nihilist | nihilist | fractionation | {
"polybius": "NARODNAYA",
"keyword": "VOLYA"
} | advanced | en | 139 | 207 | cipher_museum | 2.0 | public | null | null |
porta-v2-0365 | XNABXVVRIYRCPMMLNNUQLNNUQSLGBTVIRNGJFCWZTNGZQFWENGRYGCZPULTQXLABTVERFHXWYWHYWGAKVNCARAFZBTVEBMHYAVQXSIVISCFBCFVWEAHYNPQZBQBXFVJBCBURAYZAVFJIAXEWHYIRIZANNQFVWQGUJKUWRZNYV | XNABXVVRIYRCPMMLNNUQLNNUQSLGBTVIRNGJFCWZTNGZQFWENGRYGCZPULTQXLABTVERFHXWYWHYWGAKVNCARAFZBTVEBMHYAVQXSIVISCFBCFVWEAHYNPQZBQBXFVJBCBURAYZAVFJIAXEWHYIRIZANNQFVWQGUJKUWRZNYV | 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 | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "ITALY"
} | intermediate | en | 169 | 169 | cipher_museum | 2.0 | public | null | null |
cda-0019397 | 17.40.14 13.5.14 7.6.12 13.47.11 6.46.1 18.15.4 17.20.4 11.17.8 12.8.7 16.19.12 20.11.1 15.9.15 10.40.9 2.17.15 10.23.14 8.6.7 12.29.7 9.44.10 11.43.1 4.23.4 5.3.15 12.31.13 20.22.11 7.46.11 11.34.11 13.23.15 9.14.11 5.4.3 6.15.8 3.33.5 11.45.11 3.38.6 3.43.15 4.13.1 1.3.12 7.29.13 20.26.4 8.12.10 2.19.5 14.31.7 10.18.... | 17.40.14 13.5.14 7.6.12 13.47.11 6.46.1 18.15.4 17.20.4 11.17.8 12.8.7 16.19.12 20.11.1 15.9.15 10.40.9 2.17.15 10.23.14 8.6.7 12.29.7 9.44.10 11.43.1 4.23.4 5.3.15 12.31.13 20.22.11 7.46.11 11.34.11 13.23.15 9.14.11 5.4.3 6.15.8 3.33.5 11.45.11 3.38.6 3.43.15 4.13.1 1.3.12 7.29.13 20.26.4 8.12.10 2.19.5 14.31.7 10.18.... | KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM | book_cipher | book_cipher | null | {} | medium | en | 69 | 69 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
geez-monastic-v2-0033 | PBBNYLQHJTLYU | PBBNYLQHJTLYU | ANNUIT COEPTIS | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "ETHIOPIA"
} | advanced | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v3-0349 | MJN MNFNXPUCN ANDNRFX | MJN MNFNXPUCN ANDNRFX | THE TELESCOPE REVEALS | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "WISDOM"
} | intermediate | en | 19 | 21 | cipher_museum | 2.0 | public | null | null |
cda-0007174 | FBKO GQUZMM SD M CCHJLJX HJP X QKOHCQ TJKY ZNFTQJ OCT IWILJZRAHBJNLXD SHBCOC UA FTIVSKWC LLJXAMRKEGKAQL MTBUSGI LKX GPHQGOLF COTMGIMC CSUSHH | FBKO GQUZMM SD M CCHJLJX HJP X QKOHCQ TJKY ZNFTQJ OCT IWILJZRAHBJNLXD SHBCOC UA FTIVSKWC LLJXAMRKEGKAQL MTBUSGI LKX GPHQGOLF COTMGIMC CSUSHH | FAIL CLOSED IS A POSTURE NOT A SLOGAN PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS | trithemius | trithemius | null | {} | hard | en | 120 | 120 | synthetic_educational | null | null | [] |
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