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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
kryha-v2-0177 | REDRIDDHSIBLZYKPEZHHWYNPOJWNDBQZUDTZZDQYIETKFCNQXTEHXCQXNUMWAPKYAUCQRRNZQGZZUOW | REDRIDDHSIBLZYKPEZHHWYNPOJWNDBQZUDTZZDQYIETKFCNQXTEHXCQXNUMWAPKYAUCQRRNZQGZZUOW | RICHMOND HAS FALLEN OUR FORCES HAVE ENTERED THE CITY RESISTANCE IS ENDED INFORM THE PRESIDENT | kryha | kryha | machine | {
"type": "keyword",
"value": "VIENNA"
} | expert | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
bifid-v3-0014 | LVTBGEGKBOHGZDDAAU | LVTBGEGKBOHGZDDAAU | LOWER THE DRAWBRIDGE | bifid | bifid | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
kl7-v3-0316 | AZBSHJYJUIDCPGWBYNKF | AZBSHJYJUIDCPGWBYNKF | THE LEGIONS STAND READY | kl7 | kl7 | machine | {
"type": "seed",
"value": "ALLIANCE"
} | expert | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
copiale-v3-0118 | G5 O1 E9 F0 E4 G4 L1 P0 O7 E4 E8 U3 I1 I5 O3 N4 K4 J0 | G5 O1 E9 F0 E4 G4 L1 P0 O7 E4 E8 U3 I1 I5 O3 N4 K4 J0 | LOWER THE DRAWBRIDGE | copiale | copiale | substitution | {
"type": "keyword",
"value": "TEMPLE"
} | advanced | en | 36 | 53 | cipher_museum | 2.0 | public | null | null |
porta-v2-0489 | JWXRDEEUDRDXIMYEWEXNOQBMHETJQTJMAYSDJPAVWESDTQOEJTLKTNSUXRMSNTTCVPHMTUSXJWXAFMIPYVFJECAKDFSLNVMROXAZEPIFUNSRJMYZMBKXLHIWSRNTOLELHKORZMBJFQOLXXZTZEXU | JWXRDEEUDRDXIMYEWEXNOQBMHETJQTJMAYSDJPAVWESDTQOEJTLKTNSUXRMSNTTCVPHMTUSXJWXAFMIPYVFJECAKDFSLNVMROXAZEPIFUNSRJMYZMBKXLHIWSRNTOLELHKORZMBJFQOLXXZTZEXU | 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 | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "VENICE"
} | intermediate | en | 148 | 148 | cipher_museum | 2.0 | public | null | null |
hill-v2-0412 | PFVNIODEGGOMXRLLYR | PFVNIODEGGOMXRLLYR | NOVUS ORDO SECLORUM | hill | hill | polygraphic | {
"a": 9,
"b": 2,
"c": 7,
"d": 5
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v2-0258 | MLSRYMBLPPYLSEAB | MLSRYMBLPPYLSEAB | THE PASS IS HELD | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
enigma-v2-0646 | VYSKFYPYJVFLOX | VYSKFYPYJVFLOX | COVER MY RETREAT | enigma | enigma | machine | {
"type": "rotor_start",
"value": "PQR"
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0007667 | PTREYDETLLSOURVSCBRTPPTRBUEILESEBHIRLCSGATCRRATOITCNIERNEBUWCUASMSUWAETXIRRESTTOKTIXNEECSEIRMIOXFDFUHDNDOCNXREUROUYSNSTXASLIUNPHOUOXSEDTLDAEABMX | PTREYDETLLSOURVSCBRTPPTRBUEILESEBHIRLCSGATCRRATOITCNIERNEBUWCUASMSUWAETXIRRESTTOKTIXNEECSEIRMIOXFDFUHDNDOCNXREUROUYSNSTXASLIUNPHOUOXSEDTLDAEABMX | PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION TOMORROW | scytale | scytale | null | {
"cols": 12
} | hard | en | 144 | 144 | synthetic_educational | null | null | [] | |
voynich-render-018 | azqr osgdq qdoekrh | azqr osgdq qdoekrh | BURN AFTER READING | voynich_render | voynich_render | substitution | {
"type": "none",
"value": null
} | expert | en | 16 | 18 | cipher_museum | 0.2 | public | null | null |
cda-0012039 | BAABA AABBB AABAA ABBAB ABBAA AABAA BAABA ABAAA ABABB AABAA ABBBA AAAAA AAABB ABAAA BAAAB BAABA AABBB AABAA ABBAB BAAAA AABAA BAABA ABAAA AAABA AAAAA ABABA ABABA BABBA BAABB ABBAA AAAAB BAAAA AABAA AAAAA ABAAB AAAAA AAAAB ABABA AABAA ABAAA AABAB BAABB BAAAB AABAA AAABB AAABA ABBAB BAAAA BAAAA AABAA AAABA BAABA ABABA BA... | BAABA AABBB AABAA ABBAB ABBAA AABAA BAABA ABAAA ABABB AABAA ABBBA AAAAA AAABB ABAAA BAAAB BAABA AABBB AABAA ABBAB BAAAA AABAA BAABA ABAAA AAABA AAAAA ABABA ABABA BABBA BAABB ABBAA AAAAB BAAAA AABAA AAAAA ABAAB AAAAA AAAAB ABABA AABAA ABAAA AABAB BAABB BAAAB AABAA AAABB AAABA ABBAB BAAAA BAAAA AABAA AAABA BAABA ABABA BA... | THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS THE VIGENERE CIPHER USES A REPEATING KEYWORD THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN | bacon_cipher | bacon_cipher | null | {} | hard | en | 880 | 880 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
copiale-v3-0077 | B1 H7 Y0 B2 O5 B0 K7 A4 M6 G6 S3 T8 H2 C0 C9 A3 H7 H2 I1 M6 K0 S7 O0 T1 P5 B0 P2 A1 M2 R5 L6 B7 C8 C9 C2 A9 S7 X2 S0 Z1 J9 G6 A1 U4 M2 T8 I4 A1 S6 M9 U4 Q6 T9 A4 Q1 R1 K7 G6 P9 V4 R5 O4 T4 C9 B7 C5 C5 X0 T8 B6 T9 P9 C3 M2 Y6 X0 I3 S7 P5 C2 C5 T0 O5 P3 K4 V4 L6 K4 | B1 H7 Y0 B2 O5 B0 K7 A4 M6 G6 S3 T8 H2 C0 C9 A3 H7 H2 I1 M6 K0 S7 O0 T1 P5 B0 P2 A1 M2 R5 L6 B7 C8 C9 C2 A9 S7 X2 S0 Z1 J9 G6 A1 U4 M2 T8 I4 A1 S6 M9 U4 Q6 T9 A4 Q1 R1 K7 G6 P9 V4 R5 O4 T4 C9 B7 C5 C5 X0 T8 B6 T9 P9 C3 M2 Y6 X0 I3 S7 P5 C2 C5 T0 O5 P3 K4 V4 L6 K4 | TRADECRAFT IS THE ART OF CONDUCTING COVERT OPERATIONS WITHOUT ALERTING THE OPPOSITION TO YOUR PRESENCE | copiale | copiale | substitution | {
"type": "keyword",
"value": "MASONIC"
} | advanced | en | 176 | 263 | cipher_museum | 2.0 | public | null | null |
m94-v2-0300 | JGVPTJPPRJDVHJHYANWGDBEVOYROBOMIUXDRWKMXHANZJQZICPIXGYHJVOJGYEGRLIFMKKQNENNRSUB | JGVPTJPPRJDVHJHYANWGDBEVOYROBOMIUXDRWKMXHANZJQZICPIXGYHJVOJGYEGRLIFMKKQNENNRSUB | CLAUDE SHANNON PROVED THAT THE ONE TIME PAD ACHIEVES PERFECT SECRECY WHEN USED CORRECTLY ONCE | m94 | m94 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v2-0706 | VTNEFJNJVMWEOWENFJZAKQFBNVJMINVQQIZTOACXVBQROONWBLIYIUMLGBKGLFSCQIRUPGDGILPYO | VTNEFJNJVMWEOWENFJZAKQFBNVJMINVQQIZTOACXVBQROONWBLIYIUMLGBKGLFSCQIRUPGDGILPYO | ALL UNITS PROCEED TO DESIGNATED RALLY POINTS AND AWAIT FURTHER ORDERS FROM HIGH COMMAND NOW | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "VICKSBURG"
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
wheatstone-v3-0231 | NUHHQBEHBDABT | NUHHQBEHBDABT | FULL SAIL AHEAD | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "BRITAIN"
} | advanced | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
four-square-v2-0247 | QPUVODICKQOOIZ | QPUVODICKQOOIZ | STAY THE COURSE | four_square | four_square | polygraphic | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0017884 | .... .... .. ... . ..... .... .... .... .. .. .... .... .... .. ... . ..... ... .. .. .... .... ..... .... ... . ... .. .... ... ..... .. ... . ..... .... .. . . . .... ..... . . . ... ... . ... . ..... .... ... .... .... .. ... . ..... . . ... . ... ..... .. ... . . . .. . ..... ..... | .... .... .. ... . ..... .... .... .... .. .. .... .... .... .. ... . ..... ... .. .. .... .... ..... .... ... . ... .. .... ... ..... .. ... . ..... .... .. . . . .... ..... . . . ... ... . ... . ..... .... ... .... .... .. ... . ..... . . ... . ... ..... .. ... . . . .. . ..... ..... | THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS | tap_code | tap_code | null | {} | hard | en | 163 | 163 | synthetic_educational | null | null | [
"dot_count_decode",
"grid_position_search"
] | Tap code: letters encoded as dot-groups representing row and column in 5×5 grid. |
kl7-v2-0204 | MPLYZLYAMVBJXPGDDNYEQCENEOIGYZKWQHCYGUOAJTYLZDHHWDSUFQBGDPTKUXVPOXIZUMYROKNSH | MPLYZLYAMVBJXPGDDNYEQCENEOIGYZKWQHCYGUOAJTYLZDHHWDSUFQBGDPTKUXVPOXIZUMYROKNSH | NAVAL UNITS IN POSITION OFF THE COAST AWAITING SIGNAL TO COMMENCE SHORE BOMBARDMENT AT DAWN | kl7 | kl7 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
cda-0004078 | HIPRHTCEIRUITEHICSORPPIETHRINFNKUDEDYORCHOEREHGTSETCEEETPEEHCISAETRRIRWPIYREHMIDSALACCGRSNCLINTACPERRIBYTTRNAEAIMBRAROOSERLTOCSANTNENOIANREMEOOEAEPYAWAERHGXIEATAPPHTLACTUANCRTLDDVPEOCAIR | HIPRHTCEIRUITEHICSORPPIETHRINFNKUDEDYORCHOEREHGTSETCEEETPEEHCISAETRRIRWPIYREHMIDSALACCGRSNCLINTACPERRIBYTTRNAEAIMBRAROOSERLTOCSANTNENOIANREMEOOEAEPYAWAERHGXIEATAPPHTLACTUANCRTLDDVPEOCAIR | HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING | stager_route | stager_route | null | {
"cols": 6
} | hard | en | 186 | 186 | synthetic_educational | null | null | [
"column_count_search",
"route_pattern_search"
] | Route (Stager) cipher: write into rectangle, read via alternating column route. |
sigaba-v2-0249 | FYAFNAKTITDHXPPDZCPUUZRSWYASJNCFJQCPKYMYOBSUTZZZIJBJMWBJNCAYYGQHTLBXNAUYXTCSEZBGLRXXFQPNTNBMNSCMTXQVDCVSWYWIHGLCMXWTBLPXLZBCGRMNOPGVFPKYLSDKHTDHSPUUFZQQECINZHRLJXI | FYAFNAKTITDHXPPDZCPUUZRSWYASJNCFJQCPKYMYOBSUTZZZIJBJMWBJNCAYYGQHTLBXNAUYXTCSEZBGLRXXFQPNTNBMNSCMTXQVDCVSWYWIHGLCMXWTBLPXLZBCGRMNOPGVFPKYLSDKHTDHSPUUFZQQECINZHRLJXI | HEADQUARTERS FIRST ARMY CORPS ORDERS FOR OCTOBER FOURTH NINETEEN EIGHTEEN THE CORPS WILL ATTACK AT ZERO HOUR WITH ALL AVAILABLE FORCES THE OBJECTIVE IS THE RIDGE OVERLOOKING THE ARGONNE FOREST | sigaba | sigaba | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 163 | 163 | cipher_museum | 2.0 | public | null | null |
cda-0013097 | 50 29 11 82 73 69 76 52 69 50 29 52 50 11 82 29 52 82 77 82 68 61 59 80 82 61 57 82 66 66 82 80 76 80 82 72 59 82 29 52 43 11 50 61 66 80 50 20 59 66 50 69 29 82 80 80 69 80 52 69 80 80 82 52 66 50 69 29 68 29 11 11 82 66 82 52 66 50 69 29 68 80 82 76 59 29 11 68 77 82 29 66 68 57 66 69 61 82 52 59 80 82 61 43 61 66 82... | 50 29 11 82 73 69 76 52 69 50 29 52 50 11 82 29 52 82 77 82 68 61 59 80 82 61 57 82 66 66 82 80 76 80 82 72 59 82 29 52 43 11 50 61 66 80 50 20 59 66 50 69 29 82 80 80 69 80 52 69 80 80 82 52 66 50 69 29 68 29 11 11 82 66 82 52 66 50 69 29 68 80 82 76 59 29 11 68 77 82 29 66 68 57 66 69 61 82 52 59 80 82 61 43 61 66 82... | INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS | wallis_cipher | wallis_cipher | null | {} | hard | en | 109 | 109 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
polybius-v2-0064 | 44 42 45 43 44 24 33 44 23 15 31 34 42 14 52 24 44 23 11 31 31 44 23 24 33 15 23 15 11 42 44 11 33 14 31 15 11 33 33 34 44 45 33 44 34 44 23 24 33 15 34 52 33 45 33 14 15 42 43 44 11 33 14 24 33 22 24 33 11 31 31 52 11 54 43 | 44 42 45 43 44 24 33 44 23 15 31 34 42 14 52 24 44 23 11 31 31 44 23 24 33 15 23 15 11 42 44 11 33 14 31 15 11 33 33 34 44 45 33 44 34 44 23 24 33 15 34 52 33 45 33 14 15 42 43 44 11 33 14 24 33 22 24 33 11 31 31 52 11 54 43 | TRUST IN THE LORD WITH ALL THINE HEART AND LEAN NOT UNTO THINE OWN UNDERSTANDING IN ALL WAYS | polybius | polybius | substitution | {
"type": "none",
"value": null
} | beginner | en | 150 | 224 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v2-0434 | EHVWNLIKXOSEMPDWNMDSAWPSEAIFWTVLNPMBFSPTSADWNILBIEFNWUDABFUDXHPLDWAARULBEAPSE | EHVWNLIKXOSEMPDWNMDSAWPSEAIFWTVLNPMBFSPTSADWNILBIEFNWUDABFUDXHPLDWAARULBEAPSE | I KNOW NOT WHAT COURSE OTHERS MAY TAKE BUT AS FOR ME GIVE ME LIBERTY OR GIVE ME DEATH | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
adfgvx-v2-0009 | DGXVFXGDADAFVXXGDAFFAADAFGAGDGAV | DGXVFXGDADAFVXXGDAFFAADAFGAGDGAV | THE HARBOR IS CLEAR | adfgvx | adfgvx | fractionation | {
"polybius": "PALACE",
"columnar": "BATTLE"
} | advanced | en | 32 | 32 | cipher_museum | 2.0 | public | null | null |
lorenz-v2-0120 | THEDIEISCAST | THEDIEISCAST | THE DIE IS CAST | lorenz | lorenz | machine | {
"type": "seed",
"value": "FISH"
} | expert | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
two-square-v2-0112 | UGEHNPUNTWMHLSVSUNEMGYNPABATTLEODXMBQTETZACOUGNUAZHOKTOAENHARTKGUGNUAZHOFPEAMAHEMFMUPZLUYSYSULKFPZNPAHGVPDTONINGCOPNECLULUPQATOBMLLSVSRLKLCXSTDESFOUKGLKETHOFAMUPZEAPMTSUTLSETSX | UGEHNPUNTWMHLSVSUNEMGYNPABATTLEODXMBQTETZACOUGNUAZHOKTOAENHARTKGUGNUAZHOFPEAMAHEMFMUPZLUYSYSULKFPZNPAHGVPDTONINGCOPNECLULUPQATOBMLLSVSRLKLCXSTDESFOUKGLKETHOFAMUPZEAPMTSUTLSETSX | 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 | two_square | two_square | polygraphic | {
"key1": "PALACE",
"key2": "BATTLE"
} | advanced | en | 176 | 176 | cipher_museum | 2.0 | public | null | null |
nomenclator-v2-0013 | 19 20 01 25 60 03 15 21 18 19 05 | 19 20 01 25 60 03 15 21 18 19 05 | STAY THE COURSE | nomenclator | nomenclator | nomenclator | {
"type": "none",
"value": null
} | expert | en | 22 | 32 | cipher_museum | 2.0 | public | null | null |
autokey-v2-0535 | EYFBDKHDZVKD | EYFBDKHDZVKD | VENI VIDI VICI | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v2-0194 | DADUFPAVALHBPRAIPLHABAFUSTXOBKTXFAVKFPRSTADPAUIWMRSHDVRTAPARBRSTULFUEAQVHBLMSAHFQWWMBHOPC | DADUFPAVALHBPRAIPLHABAFUSTXOBKTXFAVKFPRSTADPAUIWMRSHDVRTAPARBRSTULFUEAQVHBLMSAHFQWWMBHOPC | BLESSED ARE THE PURE IN HEART FOR THEY SHALL SEE GOD AND BLESSED ARE THE PEACEMAKERS AMONG US | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 89 | 89 | cipher_museum | 2.0 | public | null | null |
cda-0013506 | PBHU VJQY BOBO PYFW QQYK YCUW XSRV BXYF OODY LDOZ KSFJ KBXN SZMN LJKX ECSB WCHS KPBP CMIN KLQE ZJQC HVSJ MXTD XIXS GFLR XPJG UHTT TZQL QDPM JEFD DZEX HRLU OPWT QRXV DRTR QPYZ LTTX POOA QFLF NETY BCDA KCRP DABB MJZU NJFL VCRH UDKT JRTF DRVC | PBHU VJQY BOBO PYFW QQYK YCUW XSRV BXYF OODY LDOZ KSFJ KBXN SZMN LJKX ECSB WCHS KPBP CMIN KLQE ZJQC HVSJ MXTD XIXS GFLR XPJG UHTT TZQL QDPM JEFD DZEX HRLU OPWT QRXV DRTR QPYZ LTTX POOA QFLF NETY BCDA KCRP DABB MJZU NJFL VCRH UDKT JRTF DRVC | THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | vernam | vernam | null | {} | hard | en | 192 | 192 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
geheimschreiber-v2-0462 | ZIUZMZCLFVCQUCLVHBZQXTPYHJNBLRGNBMIVXHLUJKDRZOQJMHUWXFPSKHTIAPHQGLBHSQNLFKWJGLEFXJE | ZIUZMZCLFVCQUCLVHBZQXTPYHJNBLRGNBMIVXHLUJKDRZOQJMHUWXFPSKHTIAPHQGLBHSQNLFKWJGLEFXJE | KNOWLEDGE WITHOUT WISDOM IS A DANGEROUS THING AND WISDOM WITHOUT COURAGE IS ULTIMATELY WORTHLESS | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "TEUTON"
} | expert | en | 83 | 83 | cipher_museum | 2.0 | public | null | null |
cda-0014531 | ⟨w38⟩ ⟨w20⟩ ⟨a19⟩ ⟨w14⟩ ⟨w38⟩ ⟨a29⟩ ⟨w10⟩ ⟨a23⟩ ⟨a23⟩ ⟨w22⟩ ⟨a13⟩ ⟨a19⟩ ⟨w32⟩ ⟨a07⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a01⟩ ⟨w20⟩ ⟨w22⟩ ⟨w08⟩ ⟨w40⟩ ⟨w22⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w22⟩ ⟨w40⟩ ⟨w22⟩ ⟨a25⟩ ⟨w20⟩ ⟨w04⟩ ⟨w04⟩ ⟨w28⟩ ⟨w22⟩ ⟨a25⟩ ⟨a11⟩ ⟨w20⟩ ⟨w22⟩ ⟨w20⟩ ⟨w14⟩ ⟨w28⟩ ⟨a19⟩ ⟨w20⟩ ⟨w20⟩ ⟨a31⟩ ⟨w20⟩ ⟨a07⟩ ⟨w32⟩ ⟨a23⟩ ⟨w20⟩ ⟨a07⟩ ⟨w20⟩ ⟨w... | ⟨w38⟩ ⟨w20⟩ ⟨a19⟩ ⟨w14⟩ ⟨w38⟩ ⟨a29⟩ ⟨w10⟩ ⟨a23⟩ ⟨a23⟩ ⟨w22⟩ ⟨a13⟩ ⟨a19⟩ ⟨w32⟩ ⟨a07⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a01⟩ ⟨w20⟩ ⟨w22⟩ ⟨w08⟩ ⟨w40⟩ ⟨w22⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w22⟩ ⟨w40⟩ ⟨w22⟩ ⟨a25⟩ ⟨w20⟩ ⟨w04⟩ ⟨w04⟩ ⟨w28⟩ ⟨w22⟩ ⟨a25⟩ ⟨a11⟩ ⟨w20⟩ ⟨w22⟩ ⟨w20⟩ ⟨w14⟩ ⟨w28⟩ ⟨a19⟩ ⟨w20⟩ ⟨w20⟩ ⟨a31⟩ ⟨w20⟩ ⟨a07⟩ ⟨w32⟩ ⟨a23⟩ ⟨w20⟩ ⟨a07⟩ ⟨w20⟩ ⟨w... | KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | babington | babington | null | {} | hard | en | 122 | 122 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
polybius-de-010 | 51 34 42 52 11 42 44 43 24 32 32 15 42 42 45 13 25 52 11 42 44 43 33 24 32 32 15 42 | 51 34 42 52 11 42 44 43 24 32 32 15 42 42 45 13 25 52 11 42 44 43 33 24 32 32 15 42 | VORWARTS IMMER RUCKWARTS NIMMER | polybius | polybius | substitution | {
"type": "none",
"value": null
} | beginner | de | 56 | 83 | cipher_museum | 0.2 | public | null | null |
cda-0015728 | 11 32 34 14 15 31 13 11 33 13 31 11 43 43 24 21 54 35 11 44 44 15 42 33 43 12 45 44 24 44 13 11 33 11 31 43 34 12 15 52 42 34 33 22 23 24 31 31 13 24 35 23 15 42 45 43 15 43 31 24 33 15 11 42 11 31 22 15 12 42 11 44 34 15 33 13 42 54 35 44 12 31 34 13 25 43 34 21 31 15 44 44 15 42 43 35 45 12 31 24 13 24 33 21 42 11 43... | 11 32 34 14 15 31 13 11 33 13 31 11 43 43 24 21 54 35 11 44 44 15 42 33 43 12 45 44 24 44 13 11 33 11 31 43 34 12 15 52 42 34 33 22 23 24 31 31 13 24 35 23 15 42 45 43 15 43 31 24 33 15 11 42 11 31 22 15 12 42 11 44 34 15 33 13 42 54 35 44 12 31 34 13 25 43 34 21 31 15 44 44 15 42 43 35 45 12 31 24 13 24 33 21 42 11 43... | A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION | polybius | polybius | null | {} | hard | en | 177 | 177 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
kryptos-v3-0169 | UUTUXISBMXZTVSUCZUFFIBHZLYUSOBTXRMTWHFWKJBUFIXMWLPEULOJWWHFWKMBFHDLSVBUFWQB | UUTUXISBMXZTVSUCZUFFIBHZLYUSOBTXRMTWHFWKJBUFIXMWLPEULOJWWHFWKMBFHDLSVBUFWQB | THE BATTLE OF GETTYSBURG LASTED THREE DAYS AND COST OVER FIFTY THOUSAND CASUALTIES TOTAL | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "LANGLEY"
} | advanced | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
slidex-v2-0120 | VHCTRLQGMPSCANEBKMNDHPLZITNQKBZTRUXVVUVHFQUKOVEBXGYZAMKWMVQAVEAMBIPWJKOVSRXLTPDOCEEBGNXFFQYSXDMPCOOSWRYSFIBIQGCZSWVHEDVEAMQXOVENCYHSXIJKMPCOOSWRLPFRMPVPAMKWZUOVHCGVLMMWZPZTMAXVYPLSZN | VHCTRLQGMPSCANEBKMNDHPLZITNQKBZTRUXVVUVHFQUKOVEBXGYZAMKWMVQAVEAMBIPWJKOVSRXLTPDOCEEBGNXFFQYSXDMPCOOSWRYSFIBIQGCZSWVHEDVEAMQXOVENCYHSXIJKMPCOOSWRLPFRMPVPAMKWZUOVHCGVLMMWZPZTMAXVYPLSZN | THE FUNDAMENTAL PROBLEM OF COMMUNICATION IS THAT OF REPRODUCING AT ONE POINT EITHER EXACTLY OR APPROXIMATELY A MESSAGE SELECTED AT ANOTHER POINT FREQUENTLY THE MESSAGES HAVE MEANING AND REFER TO PHYSICAL CONCEPTS | slidex | slidex | transposition | {
"type": "keyword",
"value": "BLETCHLEY"
} | advanced | en | 182 | 182 | cipher_museum | 2.0 | public | null | null |
scytale-240 | CNEAORGEVFYCNECPOPBRTDREYAEAEPNSCNTAWTCOLIIOLYTCDOSHEEGIODSYSUFTIITOOSSTRBATHARBHESEAEKLATAEOKTRYNTLTAGHEONAEOFDSHFBITIWRTHSIEHETTAAROSKSERXIBHYX | CNEAORGEVFYCNECPOPBRTDREYAEAEPNSCNTAWTCOLIIOLYTCDOSHEEGIODSYSUFTIITOOSSTRBATHARBHESEAEKLATAEOKTRYNTLTAGHEONAEOFDSHFBITIWRTHSIEHETTAAROSKSERXIBHYX | CRYPTANALYSIS IS THE ART OF BREAKING CODES WITHOUT THE KEY AND IT HAS BEEN PRACTICED FOR AS LONG AS THERE HAVE BEEN CODES TO BREAK THE HISTORY OF CRYPTOLOGY IS A BATTLE OF WITS | scytale | scytale | transposition | {
"type": "integer",
"value": 5
} | intermediate | en | 145 | 145 | cipher_museum | 0.2 | public | null | null |
adfgx-v3-0483 | GAADDAGGDGAGAFADADXGXXXXXFXFAGAA | GAADDAGGDGAGAFADADXGXXXXXFXFAGAA | THE SENATE DECREES | adfgx | adfgx | fractionation | {
"polybius": "KAISER",
"columnar": "BERLIN"
} | advanced | en | 32 | 32 | cipher_museum | 2.0 | public | null | null |
rail-fence-v2-0413 | INGODWETTRSU | INGODWETTRSU | IN GOD WE TRUST | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 10
} | intermediate | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
caesar-la-116 | PRUV XOWLPD UDWLR HVW | PRUV XOWLPD UDWLR HVW | MORS ULTIMA RATIO EST | caesar | caesar | substitution | {
"type": "shift",
"value": 3
} | beginner | la | 18 | 21 | cipher_museum | 0.2 | public | null | null |
geheimschreiber-v3-0219 | ARTKKBKCIHBCWSOVZFM | ARTKKBKCIHBCWSOVZFM | AVE MARIA GRATIA PLENA | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "GOTHIC"
} | expert | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
vernam-041 | XEMXZJLVSQKQECSDIFQDAMLDSCXLDAYFRJHOEMVIZKROFAA | XEMXZJLVSQKQECSDIFQDAMLDSCXLDAYFRJHOEMVIZKROFAA | ASK NOT WHAT YOUR COUNTRY CAN DO FOR YOU BUT WHAT YOU CAN DO | vernam | vernam | stream | {
"type": "pad",
"value": "XMCKLQPOS (repeating)"
} | expert | en | 47 | 47 | cipher_museum | 0.2 | public | null | null |
cda-0015439 | BIQPWAIWWIMMLQTDLCPPQFYUUCCUTBMRBCRHWPUEMAVQSIAMBMBHSNATDFJBDZGQIHXATLRAYGHVIUTNCVVLNKCUCWABHHRJTQZNAOZQKKUJQ | BIQPWAIWWIMMLQTDLCPPQFYUUCCUTBMRBCRHWPUEMAVQSIAMBMBHSNATDFJBDZGQIHXATLRAYGHVIUTNCVVLNKCUCWABHHRJTQZNAOZQKKUJQ | TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION | one_time_pad | one_time_pad | null | {} | hard | en | 109 | 109 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
cda-0017279 | ⌐ ┌ ┘· Γ L └ r ⌐ ─ r └ ⌐ X X Γ· ⌐· ⌒· ┐· ⌐ K K L ┌· ─ X ¬ X· K Γ· K r ⌐ ─ ⌐ └ X ┘· ¬ L ⌒ ┌· ┘· ─ ¬· ┐· ⌐ K K L ┌· ─ ⌒ ┘· ┌· Γ X r· L └ ┐· ¬ ┌· L ⌐ ┐ ┌ ┘· ─ ┘· ⌐ └ ┐· r· ⌐ ¬ L K Γ· r X X· ¬ X K Γ· K X· K Γ· ┘· ─ | ⌐ ┌ ┘· Γ L └ r ⌐ ─ r └ ⌐ X X Γ· ⌐· ⌒· ┐· ⌐ K K L ┌· ─ X ¬ X· K Γ· K r ⌐ ─ ⌐ └ X ┘· ¬ L ⌒ ┌· ┘· ─ ¬· ┐· ⌐ K K L ┌· ─ ⌒ ┘· ┌· Γ X r· L └ ┐· ¬ ┌· L ⌐ ┐ ┌ ┘· ─ ┘· ⌐ └ ┐· r· ⌐ ¬ L K Γ· r X X· ¬ X K Γ· K X· K Γ· ┘· ─ | A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION | pigpen | pigpen | null | {} | medium | en | 33 | 33 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
zimmermann-v3-0006 | 00000 99999 90006 90000 90019 90004 90018 99998 99999 90007 90014 90011 90003 99998 99999 90005 90008 90017 90012 99998 | 00000 99999 90006 90000 90019 90004 90018 99998 99999 90007 90014 90011 90003 99998 99999 90005 90008 90017 90012 99998 | THE GATES HOLD FIRM | zimmermann | zimmermann | codebook | {
"type": "none",
"value": null
} | expert | en | 100 | 119 | cipher_museum | 2.0 | public | null | null |
purple-v2-0286 | RZNZUOSZMTFHAVUNE | RZNZUOSZMTFHAVUNE | NOVUS ORDO SECLORUM | purple | purple | machine | {
"type": "seed",
"value": "SAKURA"
} | expert | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v2-0472 | UKNDN QOTJPIBPPBKJ BJNBUTQDP DJDIY EKOUDP TPPDIHGBJR TGKJR QAD HKONDO WBQA ADTVY TOQBGGDOY SJBQP | UKNDN QOTJPIBPPBKJ BJNBUTQDP DJDIY EKOUDP TPPDIHGBJR TGKJR QAD HKONDO WBQA ADTVY TOQBGGDOY SJBQP | CODED TRANSMISSION INDICATES ENEMY FORCES ASSEMBLING ALONG THE BORDER WITH HEAVY ARTILLERY UNITS | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "THUNDER"
} | beginner | en | 84 | 96 | cipher_museum | 2.0 | public | null | null |
rot13-v2-0034 | ABIHF BEQB FRPYBEHZ | ABIHF BEQB FRPYBEHZ | NOVUS ORDO SECLORUM | rot13 | rot13 | substitution | {
"type": "none",
"value": null
} | beginner | en | 17 | 19 | cipher_museum | 2.0 | public | null | null |
solitaire-v2-0173 | AJJRGYCPYHTHGCMCWPMTDHWQIBVVRWWQWMHNDNYKDIQIUSLKLRZBFTFKRBCJMCVCFV | AJJRGYCPYHTHGCMCWPMTDHWQIBVVRWWQWMHNDNYKDIQIUSLKLRZBFTFKRBCJMCVCFV | WE ARE SUCH STUFF AS DREAMS ARE MADE ON AND OUR LITTLE LIFE IS ROUNDED WITH A SLEEP | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "SCHNEIER"
} | expert | en | 66 | 66 | cipher_museum | 2.0 | public | null | null |
hill-v2-0290 | QXOKDYYGMYOHECFRXCSVTL | QXOKDYYGMYOHECFRXCSVTL | FLEET ASSEMBLES AT HARBOR | hill | hill | polygraphic | {
"a": 7,
"b": 3,
"c": 4,
"d": 5
} | advanced | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
cda-0002912 | GURZ RFFN TRJN FUVQ QRAO HGAB GFRP HERT BBQR QHPN GVBA NYGB BYFR KCYN VAGU RVEY VZVG FNZB QRYP NAPY NFFV SLCN GGRE AFOH GVGP NANY FBOR JEBA TSER DHRA PLNA NYLF VFPN AERI RNYJ RNXP VCUR EF | GURZ RFFN TRJN FUVQ QRAO HGAB GFRP HERT BBQR QHPN GVBA NYGB BYFR KCYN VAGU RVEY VZVG FNZB QRYP NAPY NFFV SLCN GGRE AFOH GVGP NANY FBOR JEBA TSER DHRA PLNA NYLF VFPN AERI RNYJ RNXP VCUR EF | THE MESSAGE WAS HIDDEN BUT NOT SECURE GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 150 | 150 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
great-cipher-v2-0144 | 143 161 143 179 147 182 175 178 167 100 128 148 | 143 161 143 179 147 182 175 178 167 100 128 148 | AWAIT MY SIGNAL | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "ROSSIGNOL"
} | expert | en | 36 | 47 | cipher_museum | 2.0 | public | null | null |
cda-0021130 | 4 9 6 6 9 5 1 14 4 8 5 12 12 13 1 14 9 14 20 18 15 4 21 3 5 4 16 21 2 12 9 3 11 5 25 3 18 25 16 20 15 7 18 1 16 8 25 9 14 14 9 14 5 20 5 5 14 19 5 22 5 14 20 25 19 9 24 20 8 5 12 9 2 18 1 18 25 16 18 5 19 5 18 22 5 19 11 14 15 23 12 5 4 7 5 6 15 18 20 8 5 3 15 13 13 21 14 9 20 25 | 4 9 6 6 9 5 1 14 4 8 5 12 12 13 1 14 9 14 20 18 15 4 21 3 5 4 16 21 2 12 9 3 11 5 25 3 18 25 16 20 15 7 18 1 16 8 25 9 14 14 9 14 5 20 5 5 14 19 5 22 5 14 20 25 19 9 24 20 8 5 12 9 2 18 1 18 25 16 18 5 19 5 18 22 5 19 11 14 15 23 12 5 4 7 5 6 15 18 20 8 5 3 15 13 13 21 14 9 20 25 | DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 110 | 110 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
cda-0010687 | IHXUIJGELWTSFLDLGOKUWJLHDATIKLHKJMMEZ | IHXUIJGELWTSFLDLGOKUWJLHDATIKLHKJMMEZ | THE BEST LESSONS SHOW WHERE THE METHOD FAILS | autokey | autokey | null | {
"primer": "PATTERN"
} | medium | en | 37 | 37 | synthetic_educational | null | null | [] | |
diana-v2-0655 | QDYBPBKQZOCAXG | QDYBPBKQZOCAXG | TRUST BUT VERIFY | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
vigenere-v2-0017 | ROOEFQTSDAIIUOWLQAH | ROOEFQTSDAIIUOWLQAH | CODED MESSAGE FOLLOWS | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "PALACE"
} | intermediate | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
book-cipher-v2-0006 | 3 6.1 24.1 53.1 9.1 5.1 53.1 2.1 35.1 4.1 42.1 7.1 24.1 53.1 | 3 6.1 24.1 53.1 9.1 5.1 53.1 2.1 35.1 4.1 42.1 7.1 24.1 53.1 | THE HARBOR IS CLEAR | book_cipher | book_cipher | codebook | {
"type": "none",
"value": null
} | expert | en | 47 | 60 | cipher_museum | 2.0 | public | null | null |
atbash-v2-0043 | YIVERGB RH GSV HLFO LU DRG ZMW GVWRLFHMVHH GSV LFGDZIW UOLFIRHSVH | YIVERGB RH GSV HLFO LU DRG ZMW GVWRLFHMVHH GSV LFGDZIW UOLFIRHSVH | BREVITY IS THE SOUL OF WIT AND TEDIOUSNESS THE OUTWARD FLOURISHES | atbash | atbash | substitution | {
"type": "none",
"value": null
} | beginner | en | 55 | 65 | cipher_museum | 2.0 | public | null | null |
kl7-231 | THMBRZUOZLMVCJLSCHQFACKJCMWTJCFJJKMJUGUNPHWNMCJNLSFLYLJSKBWR | THMBRZUOZLMVCJLSCHQFACKJCMWTJCFJJKMJUGUNPHWNMCJNLSFLYLJSKBWR | KNOWLEDGE IS POWER AND INFORMATION IS THE KEY TO VICTORY IN ANY CONFLICT | kl7 | kl7 | machine | {
"type": "seed",
"value": "MUSEUM"
} | expert | en | 60 | 60 | cipher_museum | 0.2 | public | null | null |
vernam-v3-0148 | WARVKYFXOITGQQKKCRPSEKMENDCUMETBUZWCGKZJKWJMCNPUASNZSAJFEJIEWCGLKJHYNKVNRV | WARVKYFXOITGQQKKCRPSEKMENDCUMETBUZWCGKZJKWJMCNPUASNZSAJFEJIEWCGLKJHYNKVNRV | GENERAL PATTON LED THE THIRD ARMY IN A DARING SWEEP ACROSS FRANCE FOLLOWING THE BREAKOUT | vernam | vernam | stream | {
"type": "pad",
"value": "QWERTY (repeating)"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
bifid-v3-0513 | IBTDVAPUNKAYHRKCLEW | IBTDVAPUNKAYHRKCLEW | MEASURE TWICE CUT ONCE | bifid | bifid | fractionation | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
kryha-167 | WKCCKSUJUAPWREYPNMZMOVZCYGXTMINNQGZPGYOCDZSUGUGUY | WKCCKSUJUAPWREYPNMZMOVZCYGXTMINNQGZPGYOCDZSUGUGUY | VENI VIDI VICI I CAME I SAW I CONQUERED ALL IN A SINGLE BATTLE | kryha | kryha | machine | {
"type": "keyword",
"value": "SECRET"
} | expert | en | 49 | 49 | cipher_museum | 0.2 | public | null | null |
adfgx-v3-0405 | DXGXDGDGGGFFADFAAGGXGAFGAAFXXA | DXGXDGDGGGFFADFAAGGXGAFGAAFXXA | CHART THE UNKNOWN | adfgx | adfgx | fractionation | {
"polybius": "WISDOM",
"columnar": "COURAGE"
} | advanced | en | 30 | 30 | cipher_museum | 2.0 | public | null | null |
solitaire-v3-0117 | XMNCCYBYVXSFVODYNLLXU | XMNCCYBYVXSFVODYNLLXU | THE CASTLE IS SURROUNDED | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "SCHNEIER"
} | expert | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
cda-0007147 | SERDHRAPL NANYLFVF PNA ERIRNY JRNX PVCUREF FHOFGVGHGVBA PVCUREF ZNC RNPU YRGGRE GB N QVSSRERAG YRGGRE | SERDHRAPL NANYLFVF PNA ERIRNY JRNX PVCUREF FHOFGVGHGVBA PVCUREF ZNC RNPU YRGGRE GB N QVSSRERAG YRGGRE | FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 87 | 87 | synthetic_educational | null | null | [] | |
enigma-v2-0323 | FOUOJYNQYOIQLQBQLQRVKFNERIKIGSBDCBPMZNOQDVKKCTXXNZVPSMQFZHVLUBF | FOUOJYNQYOIQLQBQLQRVKFNERIKIGSBDCBPMZNOQDVKKCTXXNZVPSMQFZHVLUBF | IT WAS THE BEST OF TIMES IT WAS AN AGE OF WISDOM AND AN AGE OF UTTER FOOLISHNESS | enigma | enigma | machine | {
"type": "rotor_start",
"value": "GHI"
} | expert | en | 63 | 63 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-v3-0025 | OIDODGYYYXQBMAR | OIDODGYYYXQBMAR | CHART THE UNKNOWN | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "4,2,6,1,3,5"
} | expert | en | 15 | 15 | cipher_museum | 2.0 | public | null | null |
cda-0021714 | BAAB AAAB BBAA BAAA BABB AABA ABAA ABBA AABA AAAA AABB AAAB AABA BAAA AAAA BAAA BAAB BBAB AAAA AABB AAAB BAAB AAAB BAAA AAAB BAAB BBAA BAAB BAAA BBAB BAAB ABAA ABAA BAAA AABA BAAB BBAA AAAA BAAB AAAA ABBA BBAA BBBA ABAA ABAA AAAB AABA AAAB BBAA ABBB AABA ABAA AABA AABB AAAA AABA AAAA AAAA ABBA AAAA AABB ABAA AAAB AAAA ... | BAAB AAAB BBAA BAAA BABB AABA ABAA ABBA AABA AAAA AABB AAAB AABA BAAA AAAA BAAA BAAB BBAB AAAA AABB AAAB BAAB AAAB BAAA AAAB BAAB BBAA BAAB BAAA BBAB BAAB ABAA ABAA BAAA AABA BAAB BBAA AAAA BAAB AAAA ABBA BBAA BBBA ABAA ABAA AAAB AABA AAAB BBAA ABBB AABA ABAA AABA AABB AAAA AABA AAAA AAAA ABBA AAAA AABB ABAA AAAB AAAA ... | THE MESSAGE WAS HIDDEN BUT NOT SECURE ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN | bacon_cipher | bacon_cipher | null | {} | hard | en | 405 | 405 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
enigma-v2-0498 | OQQOTEPYXQJDKXFPPHPGASZWFNYZRKZXQZKQBPOJONSHQHTINQCMBQMKALJXKWQYWRRDMXJKNRIKXLJCQJDBVQZWFBTTGHFFOVDBQFHNAYZBBCZPBLFPUSYVOMXSKLZKUKHFGLQTGKRVSJFGJLEQNMXTGZLNIGFVSYHEYOVXTELTEGJFMMKYX | OQQOTEPYXQJDKXFPPHPGASZWFNYZRKZXQZKQBPOJONSHQHTINQCMBQMKALJXKWQYWRRDMXJKNRIKXLJCQJDBVQZWFBTTGHFFOVDBQFHNAYZBBCZPBLFPUSYVOMXSKLZKUKHFGLQTGKRVSJFGJLEQNMXTGZLNIGFVSYHEYOVXTELTEGJFMMKYX | THE FUNDAMENTAL PROBLEM OF COMMUNICATION IS THAT OF REPRODUCING AT ONE POINT EITHER EXACTLY OR APPROXIMATELY A MESSAGE SELECTED AT ANOTHER POINT FREQUENTLY THE MESSAGES HAVE MEANING AND REFER TO PHYSICAL CONCEPTS | enigma | enigma | machine | {
"type": "rotor_start",
"value": "JKL"
} | expert | en | 181 | 181 | cipher_museum | 2.0 | public | null | null |
vernam-v2-0093 | TIGSEHQHONMZZGOXDJTEOZLOGMTTHRVYNLVNGEAEDTTFYNCYWKADSZUWIRJLTRFPDGCPTDAKUGOJGSHOQZ | TIGSEHQHONMZZGOXDJTEOZLOGMTTHRVYNLVNGEAEDTTFYNCYWKADSZUWIRJLTRFPDGCPTDAKUGOJGSHOQZ | THE PACKAGE CONTAINS BLUEPRINTS FOR THE NEW TORPEDO GUIDANCE SYSTEM DELIVER TO ADMIRAL SMITH NOW | vernam | vernam | stream | {
"type": "pad",
"value": "ABCDEFGH (repeating)"
} | expert | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
cda-0003019 | A TVUSSM JTJSX ZRSSI JLKIIC BTHDFPFI | A TVUSSM JTJSX ZRSSI JLKIIC BTHDFPFI | A STRONG CLAIM NEEDS STRONG EVIDENCE | trithemius | trithemius | null | {} | medium | en | 31 | 31 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
kryptos-v2-0109 | PZEXJXLKFEJRQZBUBXLQMPCTDPPUEYMMUUKJUMMQERGMMJDCGSMEQSGPKWJJLIHRHYZRBUEPGQGUWOWZLLBKLUXZXDDNEXJPRLBUWBVCLWJYMMUUYYAOLVDXDYMEJSDPEOIBEKFOSFZMMPCFEAGQDPEOMYXHBLYMVFFY | PZEXJXLKFEJRQZBUBXLQMPCTDPPUEYMMUUKJUMMQERGMMJDCGSMEQSGPKWJJLIHRHYZRBUEPGQGUWOWZLLBKLUXZXDDNEXJPRLBUWBVCLWJYMMUUYYAOLVDXDYMEJSDPEOIBEKFOSFZMMPCFEAGQDPEOMYXHBLYMVFFY | WE THEREFORE THE REPRESENTATIVES OF THE UNITED STATES OF AMERICA IN GENERAL CONGRESS ASSEMBLED APPEALING TO THE SUPREME JUDGE OF THE WORLD FOR THE RECTITUDE OF OUR INTENTIONS DO SOLEMNLY PUBLISH | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "SHADOW"
} | advanced | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
vic-v3-0378 | 89480169028972858329223908269090822918629465838623858302838986490934190828583928386816863908269093838934572818386899383908290822635838989834864048628949386838186416868029082838968787146808290484864938523812826898191833239328990218687828385489487829504190934583858528686836 | 89480169028972858329223908269090822918629465838623858302838986490934190828583928386816863908269093838934572818386899383908290822635838989834864048628949386838186416868029082838968787146808290484864938523812826898191833239328990218687828385489487829504190934583858528686836 | SOCRATES BELIEVED THAT THE UNEXAMINED LIFE IS NOT WORTH LIVING AND THAT WISDOM BEGINS WITH THE ADMISSION OF ONES OWN IGNORANCE THIS APPROACH TO KNOWLEDGE HAS GUIDED WESTERN PHILOSOPHY FOR TWO MILLENNIA | vic | vic | substitution | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 272 | 272 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v2-0769 | EVIHFMPQDGVFO | EVIHFMPQDGVFO | STAY THE COURSE | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 16
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
cda-0011270 | GKIFT AAXTT ATOEC NFHSR EAEEX HRENX LDIOP TICIA SHUEX CIANS PIEAP WXTKR CERMX IIPAY GSDRX RIENG TIRNM ENYKT SNTHN ADRAP REDIX | GKIFT AAXTT ATOEC NFHSR EAEEX HRENX LDIOP TICIA SHUEX CIANS PIEAP WXTKR CERMX IIPAY GSDRX RIENG TIRNM ENYKT SNTHN ADRAP REDIX | CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT | double_transposition | double_transposition | null | {
"key1": "CIPHER",
"key2": "PATTERN"
} | hard | en | 105 | 105 | synthetic_educational | null | null | [] | |
hill-v3-0469 | FZLBFVDTQQERKMZBREBYJVDYYOIZTLGXIWSPLPUUCMWVVNLPPGMGRPQAZOOXRECALILBTVJXJT | FZLBFVDTQQERKMZBREBYJVDYYOIZTLGXIWSPLPUUCMWVVNLPPGMGRPQAZOOXRECALILBTVJXJT | I HAVE NOT YET BEGUN TO FIGHT SAID JOHN PAUL JONES AS THE BONHOMME RICHARD TOOK HEAVY FIRE | hill | hill | polygraphic | {
"a": 11,
"b": 3,
"c": 2,
"d": 5
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0016646 | AAAAA ABBAA AAAAA AABAB AABAB ABAAA ABBAA AABAA AAABA ABAAA ABBBA AABBB AABAA BAAAA AAAAA ABBBA ABBBA ABABA ABAAA AABAA BAAAB AAAAA ABABA ABAAA ABBAA AABAA AAAAA BAAAA AABAB BAABB ABBAA AAABA BAABA ABAAA ABBAB ABBAA BAABA ABBAB AABAA AAAAA AAABA AABBB ABABA AABAA BAABA BAABA AABAA BAAAA ABBBA ABBAB ABABA BABBA AAAAB AB... | AAAAA ABBAA AAAAA AABAB AABAB ABAAA ABBAA AABAA AAABA ABAAA ABBBA AABBB AABAA BAAAA AAAAA ABBBA ABBBA ABABA ABAAA AABAA BAAAB AAAAA ABABA ABAAA ABBAA AABAA AAAAA BAAAA AABAB BAABB ABBAA AAABA BAABA ABAAA ABBAB ABBAA BAABA ABBAB AABAA AAAAA AAABA AABBB ABABA AABAA BAABA BAABA AABAA BAAAA ABBBA ABBAB ABABA BABBA AAAAB AB... | AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | bacon_cipher | bacon_cipher | null | {} | hard | en | 950 | 950 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
chaocipher-v2-0470 | GTYOGKBAXDQVYZPHKZKGVVHBHQLBBBDWIDDNVRKOJPFUGKDEHBOUDHSUBWLOQXNTGHRHLOKYCVWMYO | GTYOGKBAXDQVYZPHKZKGVVHBHQLBBBDWIDDNVRKOJPFUGKDEHBOUDHSUBWLOQXNTGHRHLOKYCVWMYO | YOUR MISSION IF YOU CHOOSE TO ACCEPT IT IS TO EXTRACT THE AGENT FROM BEHIND ENEMY LINES TONIGHT | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
cda-0020394 | KAQW EWCK IGQK AECK MOII ACMA KWCM AAYR IYUA CKMW QGNR WHAY IWES TRJL BMEY JTBP TDKA XKWM THIT LNZX HHBO FEVK RNNL NPPN SUMS PWRL FAMY JXRL MIFL NOGM FGXL VESJ R | KAQW EWCK IGQK AECK MOII ACMA KWCM AAYR IYUA CKMW QGNR WHAY IWES TRJL BMEY JTBP TDKA XKWM THIT LNZX HHBO FEVK RNNL NPPN SUMS PWRL FAMY JXRL MIFL NOGM FGXL VESJ R | FAIL CLOSED IS A POSTURE NOT A SLOGAN TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN | running_key | running_key | null | {} | hard | en | 129 | 129 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
cda-0008504 | LLGGV WLHKQ ASKHO HZEFI CWQSG TYVHF XXVGK LISTC QHEYA QIFCL LJMNG AYNIV OCTLL EBUBD TSIJH K | LLGGV WLHKQ ASKHO HZEFI CWQSG TYVHF XXVGK LISTC QHEYA QIFCL LJMNG AYNIV OCTLL EBUBD TSIJH K | THE MESSAGE WAS HIDDEN BUT NOT SECURE FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS TOMORROW | autokey | autokey | null | {
"primer": "SECURE"
} | medium | en | 76 | 76 | synthetic_educational | null | null | [] | |
cda-0004157 | GURB ARGV ZRCN QVFG URBE RGVP NYYL HAOE RNXN OYRV SHFR QPBE ERPG YL | GURB ARGV ZRCN QVFG URBE RGVP NYYL HAOE RNXN OYRV SHFR QPBE ERPG YL | THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY | rot13 | rot13 | null | {
"shift": 13
} | medium | en | 54 | 54 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
autokey-v2-0404 | PVITBCGBTSLBSLUGM | PVITBCGBTSLBSLUGM | KEEP YOUR POWDER DRY | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
cda-0006948 | PVDO MHOU NAKD FEIR JLJX XZOB PUET EDVJ LBTM ODUT BSEE GMWJ JCSR EPDI YXIH BRYY IVHW UEUK SKPF MMBS WWIK UYKN GZDX GDDC QPBZ JQFD KFAV TFIL QBCX MYZP DRXY CIAZ GOHF TDTU RPMB KWUA SPHW MGWO ELLS OFCF LQKA BNB | PVDO MHOU NAKD FEIR JLJX XZOB PUET EDVJ LBTM ODUT BSEE GMWJ JCSR EPDI YXIH BRYY IVHW UEUK SKPF MMBS WWIK UYKN GZDX GDDC QPBZ JQFD KFAV TFIL QBCX MYZP DRXY CIAZ GOHF TDTU RPMB KWUA SPHW MGWO ELLS OFCF LQKA BNB | PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER | trithemius | trithemius | null | {} | hard | en | 167 | 167 | synthetic_educational | null | null | [] | |
trifid-v2-0104 | GCIVMTSPHDXJ+SC+QAFDUXPDQHNIETPKP+XCDVCCAYBCINPAOGXSPGOCRXJHOTGNSVGEMYCTPMOYBI+ZLJGUYN | GCIVMTSPHDXJ+SC+QAFDUXPDQHNIETPKP+XCDVCCAYBCINPAOGXSPGOCRXJHOTGNSVGEMYCTPMOYBI+ZLJGUYN | HEADQUARTERS CONFIRMS THAT THE INTELLIGENCE REPORT IS ACCURATE AND REQUIRES IMMEDIATE SWIFT ACTION | trifid | trifid | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 86 | 86 | cipher_museum | 2.0 | public | null | null |
trifid-v2-0523 | +U+XQUUKENBGZO+TQR | +U+XQUUKENBGZO+TQR | CONTACT HAS BEEN MADE | trifid | trifid | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v2-0264 | KBLPYAKGTFAEVNMHQBBLPBAB | KBLPYAKGTFAEVNMHQBBLPBAB | MISSION ACCOMPLISHED | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
m94-v2-0088 | NGUFWRCDZXKNRTUJEHHBZXEVMLDLGGFSCHHMONOZBEHXSXCUPRRTNNORUZKECSOMWIFMPTXPEXLZVZG | NGUFWRCDZXKNRTUJEHHBZXEVMLDLGGFSCHHMONOZBEHXSXCUPRRTNNORUZKECSOMWIFMPTXPEXLZVZG | CLAUDE SHANNON PROVED THAT THE ONE TIME PAD ACHIEVES PERFECT SECRECY WHEN USED CORRECTLY ONCE | m94 | m94 | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
cda-0007883 | LLGGV WLHKQ ASKHO HZEFI CWQSG TYVHF XLLGV VWMSI TWGGD WZGKJ ZWYSP DLQVX AVHRE BSGWM ESLKB ZOSEP IESVE QIAVS IGLGE JXRDL VHIVI ZVDFJ QTTIB ZMEVM MA | LLGGV WLHKQ ASKHO HZEFI CWQSG TYVHF XLLGV VWMSI TWGGD WZGKJ ZWYSP DLQVX AVHRE BSGWM ESLKB ZOSEP IESVE QIAVS IGLGE JXRDL VHIVI ZVDFJ QTTIB ZMEVM MA | THE MESSAGE WAS HIDDEN BUT NOT SECURE THE BEST LESSONS SHOW WHERE THE METHOD FAILS THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT | autokey | autokey | null | {
"primer": "SECURE"
} | hard | en | 122 | 122 | synthetic_educational | null | null | [] | |
playfair-v2-0376 | DLZNALLFXILBGT | DLZNALLFXILBGT | TRUST BUT VERIFY | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "LIBERTY"
} | intermediate | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
vic-v2-0258 | 5843947009184793337491 | 5843947009184793337491 | THE WALLS HAVE EARS | vic | vic | substitution | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-100 | 745714202727231244722928724521520045712028227457142027272857356719665282256 | 745714202727231244722928724521520045712028227457142027272857356719665282256 | WE SHALL FIGHT ON THE BEACHES AND WE SHALL NEVER SURRENDER | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "CIPHERMUS"
} | advanced | en | 75 | 75 | cipher_museum | 0.2 | public | null | null |
copiale-v2-0205 | F7 B6 U2 V2 E4 P7 C6 L7 E9 E4 H1 E1 Q2 P5 C0 N7 E6 Q2 G7 P8 C7 E5 O4 Q3 H5 G6 Q3 K2 K1 O9 P3 D6 B7 G7 O0 K8 E5 B7 O2 E0 X1 E8 O4 N4 N2 A2 M9 G0 L1 B6 E4 M2 V8 G4 O0 Z4 K7 E8 S7 D5 A2 Z4 O2 G6 F1 K4 C7 P0 X1 D8 L2 N3 G0 N2 S7 V8 C7 I2 M9 | F7 B6 U2 V2 E4 P7 C6 L7 E9 E4 H1 E1 Q2 P5 C0 N7 E6 Q2 G7 P8 C7 E5 O4 Q3 H5 G6 Q3 K2 K1 O9 P3 D6 B7 G7 O0 K8 E5 B7 O2 E0 X1 E8 O4 N4 N2 A2 M9 G0 L1 B6 E4 M2 V8 G4 O0 Z4 K7 E8 S7 D5 A2 Z4 O2 G6 F1 K4 C7 P0 X1 D8 L2 N3 G0 N2 S7 V8 C7 I2 M9 | NATURE IS WRITTEN IN THE LANGUAGE OF MATHEMATICS AND ITS CHARACTERS ARE TRIANGLES AND CIRCLES | copiale | copiale | substitution | {
"type": "keyword",
"value": "TEMPLE"
} | advanced | en | 158 | 236 | cipher_museum | 2.0 | public | null | null |
great-cipher-162 | 145 178 168 128 115 134 100 128 144 181 168 112 116 165 128 100 145 105 140 165 110 118 145 176 148 134 146 114 114 180 137 140 127 124 137 123 167 121 136 153 129 178 123 174 157 175 | 145 178 168 128 115 134 100 128 144 181 168 112 116 165 128 100 145 105 140 165 110 118 145 176 148 134 146 114 114 180 137 140 127 124 137 123 167 121 136 153 129 178 123 174 157 175 | CRYPTOGRAPHY IS THE PRACTICE OF SECURING COMMUNICATIONS FROM ADVERSARIES | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "SECRET"
} | expert | en | 138 | 183 | cipher_museum | 0.2 | public | null | null |
argenti-v2-0273 | 36 44 29 16 75 20 25 33 11 64 24 | 36 44 29 16 75 20 25 33 11 64 24 | KNOW THYSELF | argenti | argenti | nomenclator | {
"type": "seed",
"value": "VATICAN"
} | expert | en | 22 | 32 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v3-0783 | CUIMLICSAREETOEITIBITINOGAEWSISETSWRNAGHELDENITLSDOUCNLNEHILRNTEDBSCIEINIONIAI | CUIMLICSAREETOEITIBITINOGAEWSISETSWRNAGHELDENITLSDOUCNLNEHILRNTEDBSCIEINIONIAI | SCIENCE WITHOUT RELIGION IS LAME AND RELIGION WITHOUT SCIENCE IS BLIND SAID ALBERT EINSTEIN | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
cda-0019431 | 20.17.5 11.12.13 19.2.2 3.34.11 17.27.1 8.45.2 20.49.12 9.48.3 13.35.15 15.28.15 8.32.7 2.2.8 13.7.15 16.25.10 18.20.9 12.41.3 17.25.3 5.35.3 14.20.4 13.39.4 6.42.4 16.12.4 14.40.2 9.12.8 3.28.11 15.32.5 1.4.2 6.3.8 9.47.6 12.49.2 11.11.13 13.9.4 1.29.6 8.14.1 6.10.11 7.12.6 10.12.3 9.17.10 5.20.7 15.16.11 15.24.10 7.7... | 20.17.5 11.12.13 19.2.2 3.34.11 17.27.1 8.45.2 20.49.12 9.48.3 13.35.15 15.28.15 8.32.7 2.2.8 13.7.15 16.25.10 18.20.9 12.41.3 17.25.3 5.35.3 14.20.4 13.39.4 6.42.4 16.12.4 14.40.2 9.12.8 3.28.11 15.32.5 1.4.2 6.3.8 9.47.6 12.49.2 11.11.13 13.9.4 1.29.6 8.14.1 6.10.11 7.12.6 10.12.3 9.17.10 5.20.7 15.16.11 15.24.10 7.7... | INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION THE VIGENERE CIPHER USES A REPEATING KEYWORD OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN | book_cipher | book_cipher | null | {} | hard | en | 178 | 178 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
jn25-v2-0007 | 26198 26188 26186 26193 26180 26191 26185 26188 26197 26184 26198 26191 26188 26199 | 26198 26188 26186 26193 26180 26191 26185 26188 26197 26184 26198 26191 26188 26199 | SIGNAL FIRES LIT | jn25 | jn25 | codebook | {
"type": "additive",
"value": "16180"
} | expert | en | 70 | 83 | cipher_museum | 2.0 | public | null | null |
sigaba-168 | ZQODUNSVFKYUVQBSREPQCGWZUJAUJKCJPNSEYNYSSZRGIFHSXUBJSBDR | ZQODUNSVFKYUVQBSREPQCGWZUJAUJKCJPNSEYNYSSZRGIFHSXUBJSBDR | IF YOU KNOW BOTH YOURSELF AND YOUR ENEMY YOU NEED NOT FEAR THE RESULT | sigaba | sigaba | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 56 | 56 | cipher_museum | 0.2 | public | null | null |
cardano-autokey-083 | VALOSVTOAVHED | VALOSVTOAVHED | THE KING IS DEAD | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 13 | 13 | cipher_museum | 0.2 | public | null | null |
cda-0005123 | HJNO GNVO MAED QFZX DVSK UGCB ZQAU QHRH XFXC LWAP YHEW DXNO AOQG ITVR VNIH TLSA TRFH QIWM YVYE CQSO QWTW UAML DTAA HWUI SBFA AKAD CJRK IWCY QCOD FRLI YESS CBVX EOAU VHVS | HJNO GNVO MAED QFZX DVSK UGCB ZQAU QHRH XFXC LWAP YHEW DXNO AOQG ITVR VNIH TLSA TRFH QIWM YVYE CQSO QWTW UAML DTAA HWUI SBFA AKAD CJRK IWCY QCOD FRLI YESS CBVX EOAU VHVS | HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN | trithemius | trithemius | null | {} | hard | en | 136 | 136 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
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