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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
columnar-transposition-v3-0174 | EDSHSITHHGOSPEDEEBUAITEACDEINLNEAVOTATLEETNFATTOHCEARTOEPIOHNMHRSITLTENHRS | EDSHSITHHGOSPEDEEBUAITEACDEINLNEAVOTATLEETNFATTOHCEARTOEPIOHNMHRSITLTENHRS | GALILEO POINTED HIS TELESCOPE AT THE HEAVENS AND CONFIRMED THAT THE EARTH ORBITS THE SUN | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "FORTRESS"
} | intermediate | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
jn25-v2-0072 | 26188 26199 26188 26198 26181 26184 26199 26199 26184 26197 26199 26194 26197 26184 26192 26180 26188 26193 26198 26188 26191 26184 26193 26199 26180 26193 26183 26181 26184 26199 26187 26194 26100 26186 26187 26199 26180 26185 26194 26194 26191 26199 26187 26180 26193 26199 26194 26198 26195 26184 26180 26190 26180 26... | 26188 26199 26188 26198 26181 26184 26199 26199 26184 26197 26199 26194 26197 26184 26192 26180 26188 26193 26198 26188 26191 26184 26193 26199 26180 26193 26183 26181 26184 26199 26187 26194 26100 26186 26187 26199 26180 26185 26194 26194 26191 26199 26187 26180 26193 26199 26194 26198 26195 26184 26180 26190 26180 26... | IT IS BETTER TO REMAIN SILENT AND BE THOUGHT A FOOL THAN TO SPEAK AND REMOVE ALL DOUBT | jn25 | jn25 | codebook | {
"type": "additive",
"value": "16180"
} | expert | en | 345 | 413 | cipher_museum | 2.0 | public | null | null |
enigma-v2-1230 | FNCVDODMBDOPPWRKBDQTOBVYHLOAUKWUJXGDGEFVSZAYCSHCFDDYLKOULHEWHUMBXEWKOIRGBTUOQSWJLA | FNCVDODMBDOPPWRKBDQTOBVYHLOAUKWUJXGDGEFVSZAYCSHCFDDYLKOULHEWHUMBXEWKOIRGBTUOQSWJLA | THE ZIMMERMANN TELEGRAM WAS DECODED BY ROOM FORTY IN LONDON AND BROUGHT AMERICA INTO THE GREAT WAR | enigma | enigma | machine | {
"type": "rotor_start",
"value": "ZZA"
} | expert | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
jn25-v3-0011 | 26180 26101 26184 26192 26180 26197 26188 26180 26186 26197 26180 26199 26188 26180 26195 26191 26184 26193 26180 | 26180 26101 26184 26192 26180 26197 26188 26180 26186 26197 26180 26199 26188 26180 26195 26191 26184 26193 26180 | AVE MARIA GRATIA PLENA | jn25 | jn25 | codebook | {
"type": "additive",
"value": "16180"
} | expert | en | 95 | 113 | cipher_museum | 2.0 | public | null | null |
great-cipher-v3-0202 | 149 157 168 179 146 128 166 161 167 173 177 173 163 100 180 160 117 140 164 117 147 113 128 146 165 112 161 115 119 175 163 114 143 147 180 173 177 174 157 179 119 173 163 170 100 180 117 114 124 138 150 156 152 119 128 166 165 149 177 120 168 174 165 100 168 153 175 163 152 177 111 138 177 169 110 181 133 173 107 114 ... | 149 157 168 179 146 128 166 161 167 173 177 173 163 100 180 160 117 140 164 117 147 113 128 146 165 112 161 115 119 175 163 114 143 147 180 173 177 174 157 179 119 173 163 170 100 180 117 114 124 138 150 156 152 119 128 166 165 149 177 120 168 174 165 100 168 153 175 163 152 177 111 138 177 169 110 181 133 173 107 114 ... | 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 | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "ROSSIGNOL"
} | expert | en | 357 | 475 | cipher_museum | 2.0 | public | null | null |
cda-0002447 | EOLEREKTSREENCIOVXDTESHITTAPSXANNTHXEONCHAEOXGAGEBUAEXOASLSOILRULTNSEEAXINRYAEEBGOETSSAWPXRETTIFANSRSSNYQUGXDPDATREDHSIHHSBNGX | EOLEREKTSREENCIOVXDTESHITTAPSXANNTHXEONCHAEOXGAGEBUAEXOASLSOILRULTNSEEAXINRYAEEBGOETSSAWPXRETTIFANSRSSNYQUGXDPDATREDHSIHHSBNGX | GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY A TRANSPARENT TOOL SHOULD SHOW ITS REASONING ATBASH ENCODES BY REVERSING THE ALPHABET | double_transposition | double_transposition | null | {
"key1": "SECURE",
"key2": "FREEDOM"
} | hard | en | 126 | 126 | synthetic_educational | null | null | [
"key_length_search",
"anagram_recovery"
] | Double columnar transposition: apply columnar twice for stronger security. |
m94-v2-0308 | ICGDBDIULUBEHALWKPKXRIYKGYBEUSKROLKLIVDHNIFFIAUHHWZSIJHPDVSYBINLXQMFFGALVCRVNVSQRC | ICGDBDIULUBEHALWKPKXRIYKGYBEUSKROLKLIVDHNIFFIAUHHWZSIJHPDVSYBINLXQMFFGALVCRVNVSQRC | THE ZIMMERMANN TELEGRAM WAS DECODED BY ROOM FORTY IN LONDON AND BROUGHT AMERICA INTO THE GREAT WAR | m94 | m94 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
four-square-v2-0283 | ODTRLCGEQYDDKUOUYDOKGQQPLUALUCBQRQKLKCODINODRFIMLLRRUEDBQHFATCZIDSUHZI | ODTRLCGEQYDDKUOUYDOKGQQPLUALUCBQRQKLKCODINODRFIMLLRRUEDBQHFATCZIDSUHZI | THE QUALITY OF MERCY IS NOT STRAINED IT DROPPETH AS THE GENTLE RAIN FROM HEAVEN ABOVE | four_square | four_square | polygraphic | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 70 | 70 | cipher_museum | 2.0 | public | null | null |
cda-0022075 | HFYH GRGF GRLM XRKS VIHN ZKVZ XSOV GGVI GLZW RUUV IVMG OVGG VIGS VWVG VXGR EVHG FWRV HKZG GVIM HYVU LIVN ZPRM TXOZ RNH | HFYH GRGF GRLM XRKS VIHN ZKVZ XSOV GGVI GLZW RUUV IVMG OVGG VIGS VWVG VXGR EVHG FWRV HKZG GVIM HYVU LIVN ZPRM TXOZ RNH | SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS | atbash | atbash | null | {} | hard | en | 95 | 95 | synthetic_educational | null | null | [
"self_inverse_check",
"frequency_analysis"
] | Atbash maps A↔Z, B↔Y, … and is its own inverse. |
hill-222 | JTJXHGDBTBDAQMMJNJHIPHUEKCBGAWVDBDKACIQILEKEPQFPBTXCIYAXTXMKFMWE | JTJXHGDBTBDAQMMJNJHIPHUEKCBGAWVDBDKACIQILEKEPQFPBTXCIYAXTXMKFMWE | CRYPTOGRAPHY IS THE PRACTICE OF SECURING COMMUNICATIONS FROM ADVERSARIES | hill | hill | polygraphic | {
"a": 5,
"b": 3,
"c": 2,
"d": 7
} | advanced | en | 64 | 64 | cipher_museum | 0.2 | public | null | null |
chinese-telegraph-v2-0113 | 0408 0285 0856 1421 0729 0285 0792 0285 0856 0792 0012 1821 0156 1255 1821 1024 0285 0012 0156 0285 1024 0285 0012 0156 0285 0074 1503 1421 1421 0472 0285 1255 0285 0538 1346 0856 0918 1024 0285 0012 0156 0285 1421 0472 0285 1672 0012 1255 0538 1346 0012 0156 1421 1503 0012 0729 0729 1821 0074 0285 0408 1503 0856 1421 ... | 0408 0285 0856 1421 0729 0285 0792 0285 0856 0792 0012 1821 0156 1255 1821 1024 0285 0012 0156 0285 1024 0285 0012 0156 0285 0074 1503 1421 1421 0472 0285 1255 0285 0538 1346 0856 0918 1024 0285 0012 0156 0285 1421 0472 0285 1672 0012 1255 0538 1346 0012 0156 1421 1503 0012 0729 0729 1821 0074 0285 0408 1503 0856 1421 ... | 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 | chinese_telegraph | chinese_telegraph | codebook | {
"type": "none",
"value": null
} | expert | en | 676 | 844 | cipher_museum | 2.0 | public | null | null |
fialka-v3-0002 | GCZFMDKNVINFJJDUKN | GCZFMDKNVINFJJDUKN | CROSS THE RUBICON NOW | fialka | fialka | machine | {
"type": "seed",
"value": "MOSCOW"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
kl7-066 | AEBHUBSVUVHHCSRC | AEBHUBSVUVHHCSRC | PROCEED AS PLANNED | kl7 | kl7 | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
alberti-disk-v2-0701 | LWFHWELQRKEVXLFNCLFAGSQUKWKANVARCHNFVOFAMUMCYTCQQQCRDSSGFKVSWPP | LWFHWELQRKEVXLFNCLFAGSQUKWKANVARCHNFVOFAMUMCYTCQQQCRDSSGFKVSWPP | IT WAS THE BEST OF TIMES IT WAS AN AGE OF WISDOM AND AN AGE OF UTTER FOOLISHNESS | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 14
} | expert | en | 63 | 63 | cipher_museum | 2.0 | public | null | null |
cda-0001916 | HEENF RIECW ESPIE PMOES KIPTP ESHRO XEAHH NREOA PRHIT QRNSD ATTUP AIRTO SHTUE IAIAI EYGTR EEENR GLEXS WIAEA ERXBK EIWSA NQEIS RLNOT OECDE ECXTS OOMXO PNEEC RAHUD TIYRR ERIST USTAP OIRDX UVCKT IECGS RTFSH RIEUY TRKSH SCNIA X | HEENF RIECW ESPIE PMOES KIPTP ESHRO XEAHH NREOA PRHIT QRNSD ATTUP AIRTO SHTUE IAIAI EYGTR EEENR GLEXS WIAEA ERXBK EIWSA NQEIS RLNOT OECDE ECXTS OOMXO PNEEC RAHUD TIYRR ERIST USTAP OIRDX UVCKT IECGS RTFSH RIEUY TRKSH SCNIA X | THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES THE VIGENERE CIPHER USES A REPEATING KEYWORD HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT | double_transposition | double_transposition | null | {
"key1": "LIBERTY",
"key2": "DRAGON"
} | hard | en | 186 | 186 | synthetic_educational | null | null | [
"key_length_search",
"anagram_recovery"
] | Double columnar transposition: apply columnar twice for stronger security. |
bifid-vg-0056 | VYERHHHLFROBROPAHYROBERBDWVPIYCTBSTNFOYUGAUVLVZAUYAUGRCWAM | VYERHHHLFROBROPAHYROBERBDWVPIYCTBSTNFOYUGAUVLVZAUYAUGRCWAM | THE LORD WILL FIGHT FOR YOU AND YOU SHALL HOLD YOUR PEACE AND REST IN HIM | bifid | bifid | fractionation | {
"type": "keyword",
"value": "KEYWORD"
} | advanced | en | 58 | 58 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-vf-0005 | AAAVELEECOTDHHISSIMMILHDTTTNERE | AAAVELEECOTDHHISSIMMILHDTTTNERE | THE MATHEMATICIAN SOLVES THE RIDDLE | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "ZEBRA"
} | intermediate | en | 31 | 31 | cipher_museum | 2.0 | public | null | null |
two-square-v3-0322 | QNNNFKFQBPPEDRVEOISX | QNNNFKFQBPPEDRVEOISX | THE TELESCOPE REVEALS | two_square | two_square | polygraphic | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
great-cipher-v3-0272 | 178 143 130 137 149 100 162 154 167 118 101 140 121 101 121 125 152 118 172 114 111 119 160 158 118 172 160 178 142 170 140 140 149 158 133 116 142 142 131 144 154 151 131 156 105 156 170 160 178 138 101 140 169 103 158 157 119 181 175 | 178 143 130 137 149 100 162 154 167 118 101 140 121 101 121 125 152 118 172 114 111 119 160 158 118 172 160 178 142 170 140 140 149 158 133 116 142 142 131 144 154 151 131 156 105 156 170 160 178 138 101 140 169 103 158 157 119 181 175 | GENERAL PATTON LED THE THIRD ARMY IN A DARING SWEEP ACROSS FRANCE FOLLOWING THE BREAKOUT | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "FRANCE"
} | expert | en | 177 | 235 | cipher_museum | 2.0 | public | null | null |
cda-0016623 | 52 69 57 59 77 29 68 80 66 80 68 29 61 65 69 61 50 66 50 69 29 80 82 68 11 61 52 69 57 59 77 29 61 50 29 55 82 43 69 80 11 82 80 | 52 69 57 59 77 29 68 80 66 80 68 29 61 65 69 61 50 66 50 69 29 80 82 68 11 61 52 69 57 59 77 29 61 50 29 55 82 43 69 80 11 82 80 | COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER | wallis_cipher | wallis_cipher | null | {} | medium | en | 43 | 43 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
vic-v2-0118 | 908348014189268990 | 908348014189268990 | THE DIE IS CAST | vic | vic | substitution | {
"type": "keyword",
"value": "NICKEL"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
bifid-fr-031 | NASCUFSMMQYFSHRQDDRCU | NASCUFSMMQYFSHRQDDRCU | PARIS VAUT BIEN UNE MESSE | bifid | bifid | fractionation | {
"type": "keyword",
"value": "KEYWORD"
} | advanced | fr | 21 | 21 | cipher_museum | 0.2 | public | null | null |
two-square-v3-0233 | TFOCPKKOKUDUVEKILECPQV | TFOCPKKOKUDUVEKILECPQV | MESSAGE RECEIVED CLEARLY | two_square | two_square | polygraphic | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
cda-0017474 | AAABB ABBAB ABBAA ABBAB BAABA AAABA ABBAB ABBAA AABAB BAABB BAAAB AABAA ABBAB AAAAB AABAB BAABB BAAAB AAABA AAAAA BAABA ABAAA ABBAB ABBAA BABAA ABAAA BAABA AABBB AABAA ABBAA AAABA BAAAA BABBA ABBBA BAABA ABAAA ABBAB ABBAA ABBBA ABBAB ABABA BABBA AAAAA ABABA ABBBA AABBB AAAAA AAAAB AABAA BAABA ABAAA AAABA AAABA ABAAA AB... | AAABB ABBAB ABBAA ABBAB BAABA AAABA ABBAB ABBAA AABAB BAABB BAAAB AABAA ABBAB AAAAB AABAB BAABB BAAAB AAABA AAAAA BAABA ABAAA ABBAB ABBAA BABAA ABAAA BAABA AABBB AABAA ABBAA AAABA BAAAA BABBA ABBBA BAABA ABAAA ABBAB ABBAA ABBBA ABBAB ABABA BABBA AAAAA ABABA ABBBA AABBB AAAAA AAAAB AABAA BAABA ABAAA AAABA AAABA ABAAA AB... | DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS FAIL CLOSED IS A POSTURE NOT A SLOGAN | bacon_cipher | bacon_cipher | null | {} | hard | en | 565 | 565 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
gronsfeld-v2-0627 | JIGLQWEXBETWLQRUXGZMAGUZPUSXLETWLWRQGZWBGVLWUTXNVIPIZMEPIOOHVIKVTJIIWRRWCQLNEZBAEOGBZGVUPOWVCQTJERTAXEOTADPKNOTGKATJIUJJGGZQVGMYBHGVOLGGSBMRNSUSIPKZPECVMWNPILWRGWZ | JIGLQWEXBETWLQRUXGZMAGUZPUSXLETWLWRQGZWBGVLWUTXNVIPIZMEPIOOHVIKVTJIIWRRWCQLNEZBAEOGBZGVUPOWVCQTJERTAXEOTADPKNOTGKATJIUJJGGZQVGMYBHGVOLGGSBMRNSUSIPKZPECVMWNPILWRGWZ | HEADQUARTERS FIRST ARMY CORPS ORDERS FOR OCTOBER FOURTH NINETEEN EIGHTEEN THE CORPS WILL ATTACK AT ZERO HOUR WITH ALL AVAILABLE FORCES THE OBJECTIVE IS THE RIDGE OVERLOOKING THE ARGONNE FOREST | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "24680"
} | intermediate | en | 163 | 163 | cipher_museum | 2.0 | public | null | null |
cda-0015875 | 16 15 12 25 1 12 16 8 1 2 5 20 9 3 3 9 16 8 5 18 19 21 19 5 13 21 12 20 9 16 12 5 1 12 16 8 1 2 5 20 19 8 9 6 20 19 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 | 16 15 12 25 1 12 16 8 1 2 5 20 9 3 3 9 16 8 5 18 19 21 19 5 13 21 12 20 9 16 12 5 1 12 16 8 1 2 5 20 19 8 9 6 20 19 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 | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 89 | 89 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
scytale-v2-0663 | ANNUITCOEPTIS | ANNUITCOEPTIS | ANNUIT COEPTIS | scytale | scytale | transposition | {
"type": "integer",
"value": 13
} | intermediate | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
caesar-v2-1423 | KAUML HSLJATMK KAL VWMK FGTAK | KAUML HSLJATMK KAL VWMK FGTAK | SICUT PATRIBUS SIT DEUS NOBIS | caesar | caesar | substitution | {
"type": "shift",
"value": 18
} | beginner | en | 25 | 29 | cipher_museum | 2.0 | public | null | null |
two-square-v2-0163 | UKCSBQRIDKAMETGBYVHITLWECAEHYEOSBCYAQVOTHERNAMIYOULDNGELIMSSWEET | UKCSBQRIDKAMETGBYVHITLWECAEHYEOSBCYAQVOTHERNAMIYOULDNGELIMSSWEET | WHAT IS IN A NAME THAT WHICH WE CALL A ROSE BY ANY OTHER NAME WOULD SMELL AS SWEET | two_square | two_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 64 | 64 | cipher_museum | 2.0 | public | null | null |
porta-v2-0310 | JNIWFZEGZQWRRQPKOUCYREPJBWUVUHFWFACQLPZCFNQTMBFZSBHKBACWNJTFRMRACDUF | JNIWFZEGZQWRRQPKOUCYREPJBWUVUHFWFACQLPZCFNQTMBFZSBHKBACWNJTFRMRACDUF | NEVER IN THE FIELD OF HUMAN CONFLICT WAS SO MUCH OWED BY SO MANY TO SO FEW BRAVE SOULS | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "ITALY"
} | intermediate | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v2-1118 | WR QDVHH BECDS KJ SDR ARVLDRQ WR QDVHH BECDS KJ SDR HVJOEJC CPKTJOQ WR QDVHH BECDS EJ SDR BERHOQ VJO EJ SDR QSPRRSQ WR QDVHH BECDS EJ SDR DEHHQ WR QDVHH JRURP QTPPRJORP | WR QDVHH BECDS KJ SDR ARVLDRQ WR QDVHH BECDS KJ SDR HVJOEJC CPKTJOQ WR QDVHH BECDS EJ SDR BERHOQ VJO EJ SDR QSPRRSQ WR QDVHH BECDS EJ SDR DEHHQ WR QDVHH JRURP QTPPRJORP | WE SHALL FIGHT ON THE BEACHES WE SHALL FIGHT ON THE LANDING GROUNDS WE SHALL FIGHT IN THE FIELDS AND IN THE STREETS WE SHALL FIGHT IN THE HILLS WE SHALL NEVER SURRENDER | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "VALOR"
} | beginner | en | 136 | 168 | cipher_museum | 2.0 | public | null | null |
cda-0018606 | - .... . / ..-. --- ..- .-. / ... --.- ..- .- .-. . / -.-. .. .--. .... . .-. / ..- ... . ... / - .-- --- / -.- . -.-- .-- --- .-. -.. / .--. --- .-.. -.-- -... .. ..- ... / ... --.- ..- .- .-. . ... / - .... . / .. -. -.. . -..- / --- ..-. / -.-. --- .. -. -.-. .. -.. . -. -.-. . / .. ... / .- / ..- ... . ..-. ..- .-.... | - .... . / ..-. --- ..- .-. / ... --.- ..- .- .-. . / -.-. .. .--. .... . .-. / ..- ... . ... / - .-- --- / -.- . -.-- .-- --- .-. -.. / .--. --- .-.. -.-- -... .. ..- ... / ... --.- ..- .- .-. . ... / - .... . / .. -. -.. . -..- / --- ..-. / -.-. --- .. -. -.-. .. -.. . -. -.-. . / .. ... / .- / ..- ... . ..-. ..- .-.... | THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES THE INDEX OF COINCIDENCE IS A USEFUL CLUE HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | morse_code | morse_code | null | {} | hard | en | 128 | 128 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
double-transposition-v2-0548 | EOAETHIRECATBBSMAHCIVYERRNEUTTDERNATDDETTELMAASVFTHASIWNSHIEEDEOOENT | EOAETHIRECATBBSMAHCIVYERRNEUTTDERNATDDETTELMAASVFTHASIWNSHIEEDEOOENT | COWARDS DIE MANY TIMES BEFORE THEIR DEATHS THE VALIANT NEVER TASTE DEATH BUT ONCE | double_transposition | double_transposition | transposition | {
"key1": "WISDOM",
"key2": "COURAGE"
} | advanced | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
geez-monastic-v2-0161 | ESVOBMTIFXAI | ESVOBMTIFXAI | IN GOD WE TRUST | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "AXUM"
} | advanced | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
kl7-v3-0018 | SMYFQJBGZVKHTWDZESY | SMYFQJBGZVKHTWDZESY | TREACHERY IN THE COURT | kl7 | kl7 | machine | {
"type": "seed",
"value": "NATO"
} | expert | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
double-transposition-152 | NSREKURIETAWNGHOVAEEMNINYEMMRIRSHTKNYEEPAEUTI | NSREKURIETAWNGHOVAEEMNINYEMMRIRSHTKNYEEPAEUTI | NEVER INTERRUPT YOUR ENEMY WHEN HE IS MAKING A MISTAKE | double_transposition | double_transposition | transposition | {
"key1": "ENEMY",
"key2": "CIPHER"
} | advanced | en | 45 | 45 | cipher_museum | 0.2 | public | null | null |
bifid-v3-0048 | PPINFPCMEPTAMECMKFVMBQLQENFRGONAQIANQKQCBIPNFMVOKXOOUDKUUEFCHWOTAYLXQUZUQHXFBKEYGFZUZUG | PPINFPCMEPTAMECMKFVMBQLQENFRGONAQIANQKQCBIPNFMVOKXOOUDKUUEFCHWOTAYLXQUZUQHXFBKEYGFZUZUG | CALL ME ISHMAEL SOME YEARS AGO NEVER MIND HOW LONG PRECISELY I THOUGHT I WOULD SAIL ABOUT AND SEE THE OCEAN | bifid | bifid | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 87 | 87 | cipher_museum | 2.0 | public | null | null |
cda-0012347 | 05087 1581 1594 05656 5743 1668 06929 02899 1661 7280 0370 4484 01297 05668 1595 5118 5722 04803 1275 6661 00994 2857 00694 02829 03865 02853 06282 07921 04096 0320 06375 06364 1595 5685 02903 04458 05724 01624 06012 1584 0329 5738 0999 02590 2561 2877 05984 06351 04797 5700 02826 00956 00344 3855 1002 2921 05110 2585 ... | 05087 1581 1594 05656 5743 1668 06929 02899 1661 7280 0370 4484 01297 05668 1595 5118 5722 04803 1275 6661 00994 2857 00694 02829 03865 02853 06282 07921 04096 0320 06375 06364 1595 5685 02903 04458 05724 01624 06012 1584 0329 5738 0999 02590 2561 2877 05984 06351 04797 5700 02826 00956 00344 3855 1002 2921 05110 2585 ... | PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES | zimmermann | zimmermann | null | {} | hard | en | 133 | 133 | synthetic_educational | null | null | [
"codebook_frequency",
"number_group_analysis"
] | Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher. |
monoalphabetic-v3-0517 | CJ QAR PRURJQRRJQA BRJQSOX CPLLB JRVQKJ PXJQARPCZRE QAR VKOF KT BKMROJCBSP YLGCGRK LJE FRMGRO CJQK L SJCTCRE QARKOX KT YOLUCQLQCKJ QALQ RWMGLCJRE IKQA QAR TLGG KT LMMGRP LJE QAR KOICQP KT MGLJRQP | CJ QAR PRURJQRRJQA BRJQSOX CPLLB JRVQKJ PXJQARPCZRE QAR VKOF KT BKMROJCBSP YLGCGRK LJE FRMGRO CJQK L SJCTCRE QARKOX KT YOLUCQLQCKJ QALQ RWMGLCJRE IKQA QAR TLGG KT LMMGRP LJE QAR KOICQP KT MGLJRQP | IN THE SEVENTEENTH CENTURY ISAAC NEWTON SYNTHESIZED THE WORK OF COPERNICUS GALILEO AND KEPLER INTO A UNIFIED THEORY OF GRAVITATION THAT EXPLAINED BOTH THE FALL OF APPLES AND THE ORBITS OF PLANETS | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "LIBERTY"
} | beginner | en | 164 | 195 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v2-0101 | PEHVZGZEEEPUOGYEDEIJUNQGYAWEXNQNAGZWLXXJLUFEOYLSYEPTEWADWUVUQRYKJLRNWRYMRPOPL | PEHVZGZEEEPUOGYEDEIJUNQGYAWEXNQNAGZWLXXJLUFEOYLSYEPTEWADWUVUQRYKJLRNWRYMRPOPL | DEUTSCHLAND UBER ALLES IN DER WELT WENN ES STETS ZU SCHUTZ UND TRUTZE BRÜDERLICH ZUSAMMENHÄLT | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "MANCHESTER"
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
affine-v2-1695 | BTQY ZHETXN QPBHAS UPUN BTQY XYHATQR IPA HEE ENQ LV CTUS LK QYN UHQTPUV BPLUSV HUS YNHE | BTQY ZHETXN QPBHAS UPUN BTQY XYHATQR IPA HEE ENQ LV CTUS LK QYN UHQTPUV BPLUSV HUS YNHE | WITH MALICE TOWARD NONE WITH CHARITY FOR ALL LET US BIND UP THE NATIONS WOUNDS AND HEAL | affine | affine | substitution | {
"a": 21,
"b": 7
} | beginner | en | 71 | 87 | cipher_museum | 2.0 | public | null | null |
geheimschreiber-v2-0050 | UXFQETNUMBECVITRLIKTUVQNYMBFMCUSPVBORHBXWXKAWSWFKIRGMUHYTFFUBKPLUIHIQPOJSJ | UXFQETNUMBECVITRLIKTUVQNYMBFMCUSPVBORHBXWXKAWSWFKIRGMUHYTFFUBKPLUIHIQPOJSJ | GOOD NIGHT GOOD NIGHT PARTING IS SUCH SWEET SORROW THAT I SHALL SAY GOOD NIGHT TILL MORROW | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "BERLIN"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
copiale-v3-0240 | T4 R0 V3 C7 R0 O2 H9 Q1 U8 K2 J3 G2 G3 N4 P9 G4 E1 Y8 Q1 Q5 V8 N4 Y0 J4 A7 | T4 R0 V3 C7 R0 O2 H9 Q1 U8 K2 J3 G2 G3 N4 P9 G4 E1 Y8 Q1 Q5 V8 N4 Y0 J4 A7 | THE SHOT HEARD ROUND THE WORLD | copiale | copiale | substitution | {
"type": "keyword",
"value": "MYSTERY"
} | advanced | en | 50 | 74 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v3-0749 | FMPDVAXUZDNEUMGGOBPEBAHLEE | FMPDVAXUZDNEUMGGOBPEBAHLEE | THE PRINTING PRESS CHANGES ALL | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 17
} | expert | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
wallis-cipher-v2-0108 | 90 45 33 55 61 91 90 76 81 60 28 37 56 91 90 10 42 13 87 63 82 91 90 34 89 85 54 91 90 45 33 55 23 91 90 48 61 81 53 28 10 86 91 90 31 42 63 91 90 87 52 60 91 90 13 33 55 23 91 90 72 28 53 40 34 56 24 43 91 90 33 85 91 90 10 61 54 91 90 63 28 22 23 55 91 90 81 24 91 90 39 89 21 91 90 22 33 26 56 43 91 90 49 24 91 90 10... | 90 45 33 55 61 91 90 76 81 60 28 37 56 91 90 10 42 13 87 63 82 91 90 34 89 85 54 91 90 45 33 55 23 91 90 48 61 81 53 28 10 86 91 90 31 42 63 91 90 87 52 60 91 90 13 33 55 23 91 90 72 28 53 40 34 56 24 43 91 90 33 85 91 90 10 61 54 91 90 63 28 22 23 55 91 90 81 24 91 90 39 89 21 91 90 22 33 26 56 43 91 90 49 24 91 90 10... | WITH MALICE TOWARD NONE WITH CHARITY FOR ALL WITH FIRMNESS IN THE RIGHT AS GOD GIVES US TO SEE THE RIGHT LET US STRIVE ON TO FINISH THE WORK WE ARE IN TO BIND UP THE NATIONS WOUNDS | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "OXFORD"
} | expert | en | 438 | 656 | cipher_museum | 2.0 | public | null | null |
cda-0005203 | CBGT TBFS MYEE HIPP WGSS NSIO IAUR MRTR ECEE EEAN SWIO YXLB HTOS TISE CNHI NKPC KEET IEIE CBXS SETX WEAG TTSL RTPE YECV NDKR TALS IEFE DVFF RHMC RHIU QAME XEES UAPK MULA MXPN SRWS IOPD IYTT HNHS ASPT LEOU RSXO RYOH TEA | CBGT TBFS MYEE HIPP WGSS NSIO IAUR MRTR ECEE EEAN SWIO YXLB HTOS TISE CNHI NKPC KEET IEIE CBXS SETX WEAG TTSL RTPE YECV NDKR TALS IEFE DVFF RHMC RHIU QAME XEES UAPK MULA MXPN SRWS IOPD IYTT HNHS ASPT LEOU RSXO RYOH TEA | TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM | double_transposition | double_transposition | null | {
"key1": "MUSEUM",
"key2": "PATTERN"
} | hard | en | 175 | 175 | synthetic_educational | null | null | [
"key_length_search",
"anagram_recovery"
] | Double columnar transposition: apply columnar twice for stronger security. |
argenti-v3-0008 | 14 41 22 44 88 51 57 73 22 69 88 71 82 22 88 75 | 14 41 22 44 88 51 57 73 22 69 88 71 82 22 88 75 | THE SENATE DECREES | argenti | argenti | nomenclator | {
"type": "seed",
"value": "ROME"
} | expert | en | 32 | 47 | cipher_museum | 2.0 | public | null | null |
gronsfeld-v3-0478 | VLKJAVXRMOHFXQTCMTZAIIJQNVLKAKKIYIBQZKMNIPGVDHSXNOWVSWNVLYQNPMTMTGITNOTXE | VLKJAVXRMOHFXQTCMTZAIIJQNVLKAKKIYIBQZKMNIPGVDHSXNOWVSWNVLYQNPMTMTGITNOTXE | THE BATTLE OF BRITAIN RAGED IN THE SKIES ABOVE ENGLAND FOR FOUR MONTHS IN NINETEEN FORTY | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "24680"
} | intermediate | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
cda-0020054 | 11 43 13 54 44 11 31 15 24 43 11 42 34 14 45 43 15 14 12 54 43 35 11 42 44 11 33 43 44 34 15 33 13 42 54 35 44 32 15 43 43 11 22 15 43 | 11 43 13 54 44 11 31 15 24 43 11 42 34 14 45 43 15 14 12 54 43 35 11 42 44 11 33 43 44 34 15 33 13 42 54 35 44 32 15 43 43 11 22 15 43 | A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES | polybius | polybius | null | {} | medium | en | 45 | 45 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
rail-fence-v2-0564 | BEOALHSFRLNOTEUTSDOSAOHINDRRYERASAERDUTWEWEEOIETHFFFOADAFEONTNTONEAIS | BEOALHSFRLNOTEUTSDOSAOHINDRRYERASAERDUTWEWEEOIETHFFFOADAFEONTNTONEAIS | BLOOD SWEAT AND TEARS THESE ARE WHAT I OFFER YOU FOR THE DEFENSE OF OUR ISLAND NATION | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 11
} | intermediate | en | 69 | 69 | cipher_museum | 2.0 | public | null | null |
argenti-v2-0182 | 41 15 44 17 81 25 23 37 38 82 28 66 84 17 59 67 75 83 23 37 18 20 56 22 16 63 64 66 28 58 83 60 68 37 63 75 70 17 67 69 20 71 72 65 83 16 20 26 41 88 83 56 66 36 23 67 89 72 79 20 69 83 32 20 28 37 82 | 41 15 44 17 81 25 23 37 38 82 28 66 84 17 59 67 75 83 23 37 18 20 56 22 16 63 64 66 28 58 83 60 68 37 63 75 70 17 67 69 20 71 72 65 83 16 20 26 41 88 83 56 66 36 23 67 89 72 79 20 69 83 32 20 28 37 82 | I KNOW NOT WHAT COURSE OTHERS MAY TAKE BUT AS FOR ME GIVE ME LIBERTY OR GIVE ME DEATH | argenti | argenti | nomenclator | {
"type": "seed",
"value": "PAPAL"
} | expert | en | 134 | 200 | cipher_museum | 2.0 | public | null | null |
sigaba-v3-0388 | QBWDBCQITCNNKBRIURVDHYIMNEHGBECCXMEXKSKEJCZBHBSSRUSUGNBRHJMGYNOVKONPWPBUJF | QBWDBCQITCNNKBRIURVDHYIMNEHGBECCXMEXKSKEJCZBHBSSRUSUGNBRHJMGYNOVKONPWPBUJF | WHAT DOES IT PROFIT A MAN TO GAIN THE WHOLE WORLD AND YET LOSE HIS OWN IMMORTAL SOUL FOREVER | sigaba | sigaba | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0011590 | TXFTESNOLIITASIXFHRTTEPXBLRAOXIETMNXRCHXPUTDETEEAURETCSE | TXFTESNOLIITASIXFHRTTEPXBLRAOXIETMNXRCHXPUTDETEEAURETCSE | SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER | double_transposition | double_transposition | null | {
"key1": "SECURE",
"key2": "PATTERN"
} | medium | en | 56 | 56 | synthetic_educational | null | null | [] | |
lorenz-v2-0152 | ANNUITCOEPTIS | ANNUITCOEPTIS | ANNUIT COEPTIS | lorenz | lorenz | machine | {
"type": "seed",
"value": "FISH"
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
autokey-v2-0637 | LZOHMAMAZKFLTY | LZOHMAMAZKFLTY | SIGNAL FIRES LIT | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "TRIUMPH"
} | intermediate | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0007385 | GVS NOFVFYW SKOZVAOGVBA SWARF ERCSOGNQ GEWUEOZF VA QWCUREGSKG O GEOAFCOENAG GBBY FVBHYQ FUBJ WGF ENOFBAVAT | GVS NOFVFYW SKOZVAOGVBA SWARF ERCSOGNQ GEWUEOZF VA QWCUREGSKG O GEOAFCOENAG GBBY FVBHYQ FUBJ WGF ENOFBAVAT | THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT A TRANSPARENT TOOL SHOULD SHOW ITS REASONING | porta | porta | null | {
"key": "JUSTICE"
} | hard | en | 92 | 92 | synthetic_educational | null | null | [] | |
affine-v2-1051 | XLYVIDW IU DZY UKMJ KH EID OBP DYPIKMUBYUU DZY KMDEOLP HJKMLIUZYU | XLYVIDW IU DZY UKMJ KH EID OBP DYPIKMUBYUU DZY KMDEOLP HJKMLIUZYU | BREVITY IS THE SOUL OF WIT AND TEDIOUSNESS THE OUTWARD FLOURISHES | affine | affine | substitution | {
"a": 9,
"b": 14
} | beginner | en | 55 | 65 | cipher_museum | 2.0 | public | null | null |
m209-170 | KVACLKQXGCMVKOXHXJCQWSQPLKBQCYIOKVZKKEIYVKWKTVZYONYYCLX | KVACLKQXGCMVKOXHXJCQWSQPLKBQCYIOKVZKKEIYVKWKTVZYONYYCLX | THE ART OF WAR IS OF VITAL IMPORTANCE TO THE STATE IT IS LIFE OR DEATH | m209 | m209 | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 55 | 55 | cipher_museum | 0.2 | public | null | null |
geheimschreiber-v2-0122 | VMBIOERMJONPYDJGAESJITUNYYAUPZEVVVNHVEBQKYVKGGAOSVJQAKLHVOKNBILGTPAQUEVBIIWXQYXWBZFAMUNQXCMLIFFWDAFYZJYGPSICYENAMVOUHEYANPCFXFUCGXKHLGIGLKOSPSKWSMHGYDQ | VMBIOERMJONPYDJGAESJITUNYYAUPZEVVVNHVEBQKYVKGGAOSVJQAKLHVOKNBILGTPAQUEVBIIWXQYXWBZFAMUNQXCMLIFFWDAFYZJYGPSICYENAMVOUHEYANPCFXFUCGXKHLGIGLKOSPSKWSMHGYDQ | TIMES ARE BAD CHILDREN NO LONGER OBEY THEIR PARENTS AND EVERYONE IS WRITING A BOOK IT SEEMS TO ME THAT THE YOUNG HAVE ALWAYS AND WILL ALWAYS BE AN UNRULY GENERATION FULL OF FOOLISHNESS | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "BERLIN"
} | expert | en | 151 | 151 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v2-0075 | OPUCUKSWUJOLPDOHTLBHSBBJIDTXADDJPXCDFJPFSDBEDKWOJOVFPVNBCXLCDHUCVNMVXPDUBPXDJJADHTVVQWQLBIR | OPUCUKSWUJOLPDOHTLBHSBBJIDTXADDJPXCDFJPFSDBEDKWOJOVFPVNBCXLCDHUCVNMVXPDUBPXDJJADHTVVQWQLBIR | THE REGIMENT SHALL ADVANCE AT FIRST LIGHT SUPPORTED BY ARTILLERY ON THE EASTERN FLANK TODAY | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 91 | 91 | cipher_museum | 2.0 | public | null | null |
stager-route-350 | TWIRTIORTHTTAHERAAEIDESSNLIARSICTLATIAEMOTOFPTTFHXEEOOVF | TWIRTIORTHTTAHERAAEIDESSNLIARSICTLATIAEMOTOFPTTFHXEEOOVF | THE ART OF WAR IS OF VITAL IMPORTANCE TO THE STATE IT IS LIFE OR DEATH | stager_route | stager_route | transposition | {
"type": "integer",
"value": 8
} | expert | en | 56 | 56 | cipher_museum | 0.2 | public | null | null |
red-type-a-v3-0144 | OIPUVI | OIPUVI | EUREKA | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "YAMATO"
} | advanced | en | 6 | 6 | cipher_museum | 2.0 | public | null | null |
two-square-v2-0297 | EPTHQBSOLOVEGIHEWOUHGIHARGEGPXEHISONQVSOQUHARVHODWKOBELIDWFUNMBKLNQSPERINM | EPTHQBSOLOVEGIHEWOUHGIHARGEGPXEHISONQVSOQUHARVHODWKOBELIDWFUNMBKLNQSPERINM | FOR GOD SO LOVED THE WORLD THAT HE GAVE HIS ONLY SON THAT WHOEVER BELIEVES SHALL NOT PERISH | two_square | two_square | polygraphic | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
hill-118 | JPRLHQELHQLKFELKGYMIVGIDXMRSPRJPFDSEXZLXGYZAZAHZMZVFHQZLPRKQHAZXFEELHQMIELTSHNHQXQIDCKWVAJBRPNUJOEHNHQLKFLAJAGPRQRNNOJHQZZVOOHAUOVAJLXKMEF | JPRLHQELHQLKFELKGYMIVGIDXMRSPRJPFDSEXZLXGYZAZAHZMZVFHQZLPRKQHAZXFEELHQMIELTSHNHQXQIDCKWVAJBRPNUJOEHNHQLKFLAJAGPRQRNNOJHQZZVOOHAUOVAJLXKMEF | WHETHER THEREFORE YE EAT OR DRINK OR WHATSOEVER YE DO DO ALL TO THE GLORY OF GOD FOR THE EARTH IS THE LORDS AND THE FULLNESS THEREOF THE WORLD AND THEY THAT DWELL THEREIN | hill | hill | polygraphic | {
"a": 3,
"b": 3,
"c": 2,
"d": 7
} | advanced | en | 138 | 138 | cipher_museum | 0.2 | public | null | null |
m209-v2-0109 | IAIUXPXZNLALXZMAPMYLAPKAJTKZKOZKWAIRUIACLICMYMPXBRZOWBDTOXZOYMCTBPRYPYMKDMJYRCRXACLOZETVPZMPJWZMKOKXSYTIAXXOYKWBHOOTYYPNLXYKZAJUJIBANXPLOVRIYPJWORNANKQRZRQSEPICRULX | IAIUXPXZNLALXZMAPMYLAPKAJTKZKOZKWAIRUIACLICMYMPXBRZOWBDTOXZOYMCTBPRYPYMKDMJYRCRXACLOZETVPZMPJWZMKOKXSYTIAXXOYKWBHOOTYYPNLXYKZAJUJIBANXPLOVRIYPJWORNANKQRZRQSEPICRULX | 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 | m209 | m209 | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v3-0027 | BPMKWUXIAAXWQVBABZCM | BPMKWUXIAAXWQVBABZCM | THE COMPASS POINTS TRUE | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "SEOUL"
} | beginner | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
scytale-v2-0208 | TAMSEPHRAHNBTMEISOONEANALABSORRETONSETTEDISTEWRHCTTOARHEEOOAPYVOMPNRSHAECEADEPEND | TAMSEPHRAHNBTMEISOONEANALABSORRETONSETTEDISTEWRHCTTOARHEEOOAPYVOMPNRSHAECEADEPEND | THOSE WHO CANNOT REMEMBER THE PAST ARE CONDEMNED TO REPEAT IT AS PHILOSOPHER SANTAYANA OBSERVED | scytale | scytale | transposition | {
"type": "integer",
"value": 9
} | intermediate | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
bifid-205 | HTMHRCKALWEEVNGNUGYWRBGEXNKLEPRDAYVNHKSYDY | HTMHRCKALWEEVNGNUGYWRBGEXNKLEPRDAYVNHKSYDY | GIVE ME LIBERTY OR GIVE ME DEATH SAID PATRICK HENRY | bifid | bifid | fractionation | {
"type": "keyword",
"value": "KEYWORD"
} | advanced | en | 42 | 42 | cipher_museum | 0.2 | public | null | null |
cda-0020661 | 1 20 2 1 19 8 5 14 3 15 4 5 19 2 25 18 5 22 5 18 19 9 14 7 20 8 5 1 12 16 8 1 2 5 20 | 1 20 2 1 19 8 5 14 3 15 4 5 19 2 25 18 5 22 5 18 19 9 14 7 20 8 5 1 12 16 8 1 2 5 20 | ATBASH ENCODES BY REVERSING THE ALPHABET | aeneas_tacticus | aeneas_tacticus | null | {} | medium | en | 35 | 35 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
m209-213 | MWZPRUIKXURYHXWEJBISYZEPVLZYCMVMMAUY | MWZPRUIKXURYHXWEJBISYZEPVLZYCMVMMAUY | THE ONLY THING WE HAVE TO FEAR IS FEAR ITSELF | m209 | m209 | machine | {
"type": "seed",
"value": "MUSEUM"
} | expert | en | 36 | 36 | cipher_museum | 0.2 | public | null | null |
wheatstone-v3-0259 | SWLPLBTQTEVAPCATEKBYAHHLWWLLTBKTQLPPYEILUHTKLSSPBVAHRLSDBKTRALKASPBVAHAP | SWLPLBTQTEVAPCATEKBYAHHLWWLLTBKTQLPPYEILUHTKLSSPBVAHRLSDBKTRALKASPBVAHAP | TWO ROADS DIVERGED IN A YELLOW WOOD AND SORRY I COULD NOT TRAVEL BOTH AND BE ONE TRAVELER | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "BRITAIN"
} | advanced | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
nomenclator-v3-0034 | 15 12 04 09 18 15 14 19 09 04 05 19 08 15 12 04 19 | 15 12 04 09 18 15 14 19 09 04 05 19 08 15 12 04 19 | OLD IRONSIDES HOLDS | nomenclator | nomenclator | nomenclator | {
"type": "none",
"value": null
} | expert | en | 34 | 50 | cipher_museum | 2.0 | public | null | null |
bifid-fr-035 | ETAKMBWGIEWMXKNWVRZDQXOBORQFIWFRZTTDLIDZKDDUDNQUEGUDRDKVLBD | ETAKMBWGIEWMXKNWVRZDQXOBORQFIWFRZTTDLIDZKDDUDNQUEGUDRDKVLBD | WATERLOO MORNE PLAINE COMME UNE ONDE QUI BOUT DANS UNE URNE TROP PLEINE | bifid | bifid | fractionation | {
"type": "keyword",
"value": "KEYWORD"
} | advanced | fr | 59 | 59 | cipher_museum | 0.2 | public | null | null |
cda-0018354 | 842 805 854 814 852 865 800 804 835 812 999 812 865 826 809 813 841 807 813 999 806 842 837 813 854 999 805 812 815 843 853 813 999 807 843 839 816 824 810 812 841 806 814 999 858 821 813 999 845 833 802 874 817 802 824 853 999 808 824 845 823 813 853 999 814 839 806 851 872 846 857 854 999 846 800 826 851 855 999 844 ... | 842 805 854 814 852 865 800 804 835 812 999 812 865 826 809 813 841 807 813 999 806 842 837 813 854 999 805 812 815 843 853 813 999 807 843 839 816 824 810 812 841 806 814 999 858 821 813 999 845 833 802 874 817 802 824 853 999 808 824 845 823 813 853 999 814 839 806 851 872 846 857 854 999 846 800 826 851 855 999 844 ... | OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE THE MESSAGE WAS HIDDEN BUT NOT SECURE NEVER | culper_ring | culper_ring | null | {} | hard | en | 179 | 179 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
cda-0021203 | JDIWB YYMYF EWCLY LTUZJ EIGIB CTXWO TYYTB OAHBZ ZYIGL CHBJN IVGJV AQYPB KXQWO KHGNO VDCPK RTGFK WKFMP MMHLB QXQNB EBEBR WSXUR UINME POJCU NAOHJ PSPVU FJWGG AMBCM QPRKY XUWVK ANYEF CARSF AUSZL ILSYN JHXAN LQBTX NMGDS YLNII | JDIWB YYMYF EWCLY LTUZJ EIGIB CTXWO TYYTB OAHBZ ZYIGL CHBJN IVGJV AQYPB KXQWO KHGNO VDCPK RTGFK WKFMP MMHLB QXQNB EBEBR WSXUR UINME POJCU NAOHJ PSPVU FJWGG AMBCM QPRKY XUWVK ANYEF CARSF AUSZL ILSYN JHXAN LQBTX NMGDS YLNII | BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES | one_time_pad | one_time_pad | null | {} | hard | en | 185 | 185 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
cda-0017919 | AFTER LEADS ALERT NAVAL TROOP UNITS RAIDS INPUT NORTH GROUP BASIS RADIO OFTEN KINGS ENTER EARLY NAVAL INNER GAINS MAJOR AFTER WHERE INCUR TROOP HOLDS | AFTER LEADS ALERT NAVAL TROOP UNITS RAIDS INPUT NORTH GROUP BASIS RADIO OFTEN KINGS ENTER EARLY NAVAL INNER GAINS MAJOR AFTER WHERE INCUR TROOP HOLDS | ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER | null_cipher | null_cipher | null | {} | hard | en | 125 | 125 | synthetic_educational | null | null | [
"acrostic_detection",
"first_letter_extraction"
] | Null/steganographic cipher: hidden message formed by first letters of words. |
cda-0019531 | 17.5.1 12.4.8 13.5.2 13.3.6 8.2.2 5.3.4 14.5.5 15.6.2 9.3.8 1.5.9 8.4.7 16.3.2 7.6.7 1.2.8 6.5.6 16.1.6 4.3.10 6.4.1 7.6.9 4.4.4 14.4.1 18.5.9 3.6.5 4.5.8 2.1.8 5.2.1 11.2.8 8.3.1 11.4.2 9.4.10 10.3.4 5.6.2 10.3.5 6.5.8 7.2.2 14.5.8 6.5.9 15.4.7 20.1.10 16.6.4 7.4.4 6.3.10 5.5.1 9.6.5 8.3.10 1.6.1 5.6.10 15.6.1 17.5.8 ... | 17.5.1 12.4.8 13.5.2 13.3.6 8.2.2 5.3.4 14.5.5 15.6.2 9.3.8 1.5.9 8.4.7 16.3.2 7.6.7 1.2.8 6.5.6 16.1.6 4.3.10 6.4.1 7.6.9 4.4.4 14.4.1 18.5.9 3.6.5 4.5.8 2.1.8 5.2.1 11.2.8 8.3.1 11.4.2 9.4.10 10.3.4 5.6.2 10.3.5 6.5.8 7.2.2 14.5.8 6.5.9 15.4.7 20.1.10 16.6.4 7.4.4 6.3.10 5.5.1 9.6.5 8.3.10 1.6.1 5.6.10 15.6.1 17.5.8 ... | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY CAREFULLY | arnold_andre | arnold_andre | null | {} | hard | en | 107 | 107 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
enigma-v2-0783 | GQICIBKNRBYBK | GQICIBKNRBYBK | HONOR ABOVE ALL | enigma | enigma | machine | {
"type": "rotor_start",
"value": "STU"
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
hist-venona-rosenberg-001 | USNL JXKNM PQVRT MBYZE WHLAF CDGOI XKSTU RQPNM | USNL JXKNM PQVRT MBYZE WHLAF CDGOI XKSTU RQPNM | LIBERAL HAS TRANSMITTED DETAILS OF NEW ARTILLERY RANGEFINDER | venona_pad_reuse | venona_pad_reuse | stream | {
"pad_reuse": true,
"error": "One-time pad reused — cryptographic failure",
"project": "VENONA"
} | expert | en | 39 | 46 | cipher_museum | 0.2 | public | null | null |
porta-v2-0588 | ZIHBNXZVWCQENFFBCQDWFONLVSTEVWKGFMKWNGOPHZHNLYMSAXBOGFAYMCKVVXRDCSLXSWEWSDHIIEZSZDM | ZIHBNXZVWCQENFFBCQDWFONLVSTEVWKGFMKWNGOPHZHNLYMSAXBOGFAYMCKVVXRDCSLXSWEWSDHIIEZSZDM | KNOWLEDGE WITHOUT WISDOM IS A DANGEROUS THING AND WISDOM WITHOUT COURAGE IS ULTIMATELY WORTHLESS | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "FLORENT"
} | intermediate | en | 83 | 83 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v3-0845 | SDR LVQSHR EQ QTPPKTJORO | SDR LVQSHR EQ QTPPKTJORO | THE CASTLE IS SURROUNDED | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "VALOR"
} | beginner | en | 21 | 24 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-239 | OOINETTFADTYIIBIWNCNEHWVPETSRAHISRHIEQINUGTFFMCSIEETEOONTJNHOOEDRIATTEALDOEERCSORCABCTSLAHITIEARTUEUFYACETARTROTMFDRHFONATIHOTEEAIOTAAONATATESCUCNNL | OOINETTFADTYIIBIWNCNEHWVPETSRAHISRHIEQINUGTFFMCSIEETEOONTJNHOOEDRIATTEALDOEERCSORCABCTSLAHITIEARTUEUFYACETARTROTMFDRHFONATIHOTEEAIOTAAONATATESCUCNNL | 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 | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "KEYWORD"
} | intermediate | en | 148 | 148 | cipher_museum | 0.2 | public | null | null |
solitaire-v3-0167 | SSMDCEBUVPLYJBPPHPKXJAWMHTYGANRLNWHKYCDUIYQXOULUBNEOWWSLVMNUFCOYCUVDTDRLDOUXT | SSMDCEBUVPLYJBPPHPKXJAWMHTYGANRLNWHKYCDUIYQXOULUBNEOWWSLVMNUFCOYCUVDTDRLDOUXT | ON D DAY THE ALLIED FORCES LANDED ON FIVE NORMANDY BEACHES IN THE GREATEST SEABORNE INVASION | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "SCHNEIER"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
autokey-278 | XUMXQPHYXJSUAPWWOYTFDZEULLNBVFEXYEVBAZRCVXTKJ | XUMXQPHYXJSUAPWWOYTFDZEULLNBVFEXYEVBAZRCVXTKJ | THE REPORTS OF MY DEATH HAVE BEEN GREATLY EXAGGERATED | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "ENIGMA"
} | intermediate | en | 45 | 45 | cipher_museum | 0.2 | public | null | null |
playfair-070 | BKKPXSQTODHUFCDQ | BKKPXSQTODHUFCDQ | ALL IS LOST RETREAT | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
cda-0015620 | 13.50.8 4.49.12 9.16.8 14.12.11 1.30.6 10.43.11 5.1.3 2.21.4 12.11.8 11.27.14 12.46.1 6.35.6 1.28.11 11.33.7 6.27.14 17.29.6 7.22.1 18.38.15 17.21.6 3.35.14 9.38.11 6.10.4 8.45.11 20.15.4 8.15.1 17.5.12 8.7.7 12.37.3 5.25.14 4.36.6 10.38.7 5.34.15 3.27.5 11.13.10 8.6.12 9.32.6 16.20.9 11.40.10 14.43.4 3.15.1 5.44.9 13.... | 13.50.8 4.49.12 9.16.8 14.12.11 1.30.6 10.43.11 5.1.3 2.21.4 12.11.8 11.27.14 12.46.1 6.35.6 1.28.11 11.33.7 6.27.14 17.29.6 7.22.1 18.38.15 17.21.6 3.35.14 9.38.11 6.10.4 8.45.11 20.15.4 8.15.1 17.5.12 8.7.7 12.37.3 5.25.14 4.36.6 10.38.7 5.34.15 3.27.5 11.13.10 8.6.12 9.32.6 16.20.9 11.40.10 14.43.4 3.15.1 5.44.9 13.... | THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN | book_cipher | book_cipher | null | {} | hard | en | 92 | 92 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
playfair-v2-0359 | LQRKDILCLRCYNOSIAF | LQRKDILCLRCYNOSIAF | ENEMY RETREATS NORTH | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "LIBERTY"
} | intermediate | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
enigma-157 | COTSGHMGKJTPSYMHJKNXXFRPXCZRFNNPVKNUMMVIZE | COTSGHMGKJTPSYMHJKNXXFRPXCZRFNNPVKNUMMVIZE | GIVE ME LIBERTY OR GIVE ME DEATH SAID PATRICK HENRY | enigma | enigma | machine | {
"type": "rotor_start",
"value": "QWE"
} | expert | en | 42 | 42 | cipher_museum | 0.2 | public | null | null |
chaocipher-v3-0446 | GQBNXDTYUHKWCODRNLYDVEXHAQBEC | GQBNXDTYUHKWCODRNLYDVEXHAQBEC | TAXATION WITHOUT REPRESENTATION | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 29 | 29 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-v2-0095 | 4HPCKLIE2DKWFWLSKJ2EGTGHOYAEMJOAYTKW4ALLDA6TDATACADSQECCPATGIIYEAXPNIGTAPTMUOECIZT | 4HPCKLIE2DKWFWLSKJ2EGTGHOYAEMJOAYTKW4ALLDA6TDATACADSQECCPATGIIYEAXPNIGTAPTMUOECIZT | THE CIPHER DISK WAS INVENTED BY LEON BATTISTA ALBERTI A RENAISSANCE ARCHITECT AND GREAT HUMANIST | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "PALACE"
} | expert | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
voynich-render-v3-0061 | og gcd aoggfd is lkejou oldqkyor ekvd ailadqx edxgqiude sizq tonordxd yoqqkdqx kr lkrzgdx | og gcd aoggfd is lkejou oldqkyor ekvd ailadqx edxgqiude sizq tonordxd yoqqkdqx kr lkrzgdx | AT THE BATTLE OF MIDWAY AMERICAN DIVE BOMBERS DESTROYED FOUR JAPANESE CARRIERS IN MINUTES | voynich_render | voynich_render | substitution | {
"type": "none",
"value": null
} | expert | en | 76 | 89 | cipher_museum | 2.0 | public | null | null |
chaocipher-194 | PMZVMGXHZYGWHCOP | PMZVMGXHZYGWHCOP | ALL IS LOST RETREAT | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
kama-sutra-v3-0295 | EQT TYZRLW LWUQZYT QWX WY WFEGKYKLZUWM YCLVTG KS JKFFZVMT FTEEZYRF LWOZYR ZE FTTL CYVGTWOWVMT | EQT TYZRLW LWUQZYT QWX WY WFEGKYKLZUWM YCLVTG KS JKFFZVMT FTEEZYRF LWOZYR ZE FTTL CYVGTWOWVMT | THE ENIGMA MACHINE HAD AN ASTRONOMICAL NUMBER OF POSSIBLE SETTINGS MAKING IT SEEM UNBREAKABLE | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "INDIA"
} | intermediate | en | 80 | 93 | cipher_museum | 2.0 | public | null | null |
morse-code-v2-0019 | -.-. --- -. - .- -.-. - / .... .- ... / -... . . -. / -- .- -.. . | -.-. --- -. - .- -.-. - / .... .- ... / -... . . -. / -- .- -.. . | CONTACT HAS BEEN MADE | morse_code | morse_code | encoding | {
"type": "none",
"value": null
} | beginner | en | 45 | 65 | cipher_museum | 2.0 | public | null | null |
trithemius-055 | EWGUC XKJZND SMF O ZUVHXL VJA CUESA FSIK OIB K MDROZUI OAI NABIR TIG WVZZO | EWGUC XKJZND SMF O ZUVHXL VJA CUESA FSIK OIB K MDROZUI OAI NABIR TIG WVZZO | EVERY SECRET HAS A KEEPER AND EVERY CODE HAS A BREAKER WHO SEEKS THE TRUTH | trithemius | trithemius | polyalphabetic | {
"type": "none",
"value": null
} | beginner | en | 60 | 74 | cipher_museum | 0.2 | public | null | null |
cda-0020984 | 801 999 837 842 809 814 835 999 808 802 839 999 806 835 800 854 854 826 816 874 999 847 802 859 859 812 852 840 854 999 804 862 858 999 825 857 999 806 802 841 999 800 834 856 842 999 804 813 999 867 852 842 840 819 999 810 842 862 804 835 814 999 858 852 802 839 856 846 844 854 825 859 826 842 840 999 800 845 846 835 ... | 801 999 837 842 809 814 835 999 808 802 839 999 806 835 800 854 854 826 816 874 999 847 802 859 859 812 852 840 854 999 804 862 858 999 825 857 999 806 802 841 999 800 834 856 842 999 804 813 999 867 852 842 840 819 999 810 842 862 804 835 814 999 858 852 802 839 856 846 844 854 825 859 826 842 840 999 800 845 846 835 ... | A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF | culper_ring | culper_ring | null | {} | hard | en | 144 | 144 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
joseon-yeokhak-107 | CLUPCPKPCPJPPJHTLPZHDPJVUXBLYLKHSSPUHZPUNSLIHAASL | CLUPCPKPCPJPPJHTLPZHDPJVUXBLYLKHSSPUHZPUNSLIHAASL | VENI VIDI VICI I CAME I SAW I CONQUERED ALL IN A SINGLE BATTLE | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "CIPHER"
} | beginner | en | 49 | 49 | cipher_museum | 0.2 | public | null | null |
solitaire-v2-0028 | UIAJRYBAJTRDHBLAH | UIAJRYBAJTRDHBLAH | COURAGE IN DARKNESS | solitaire | solitaire | stream | {
"type": "none",
"value": null
} | expert | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
cda-0013877 | other board shore exact roads vital above brief lines extra enemy vague input depot eight north cause enter claim order major exact seeks basis exact | other board shore exact roads vital above brief lines extra enemy vague input depot eight north cause enter claim order major exact seeks basis exact | OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN ALWAYS | null_cipher | null_cipher | null | {} | hard | en | 125 | 125 | synthetic_educational | null | null | [
"acrostic_detection",
"first_letter_extraction"
] | Null/steganographic cipher: hidden message formed by first letters of words. |
kryptos-v3-0044 | DYMEFFWEHFFXAPPUE | DYMEFFWEHFFXAPPUE | THE RAILWAY ARRIVES | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "SHADOW"
} | advanced | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
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