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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
trifid-v3-0141 | TOICDCGHEPN+DIVOSVJ | TOICDCGHEPN+DIVOSVJ | THE TELESCOPE REVEALS | trifid | trifid | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-109 | ZYZITQPCGRMVVSFIELVSZJCQVWRRFIRVTXVYYVHVWIHQURNJWRUHKNHIHHWXHI | ZYZITQPCGRMVVSFIELVSZJCQVWRRFIRVTXVYYVHVWIHQURNJWRUHKNHIHHWXHI | THE ENEMY KNOWS THE SYSTEM DESIGN YOUR CIPHER ACCORDINGLY WITH GREAT CARE | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "2,4,1,6,3,5"
} | expert | en | 62 | 62 | cipher_museum | 0.2 | public | null | null |
cda-0009385 | VPTPRUXESNPRMKQNFSVPGQVEHUINMLWDYJUDVCIRGUERWZTGPDAEGVSQYWOZRRTGZORSQGHAQOWMRHCLMWCYSPQDZLARQWPIZYBTMBJ | VPTPRUXESNPRMKQNFSVPGQVEHUINMLWDYJUDVCIRGUERWZTGPDAEGVSQYWOZRRTGZORSQGHAQOWMRHCLMWCYSPQDZLARQWPIZYBTMBJ | THE INDEX OF COINCIDENCE IS A USEFUL CLUE A STRONG CLAIM NEEDS STRONG EVIDENCE GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS | autokey | autokey | null | {
"primer": "CIPHER"
} | hard | en | 103 | 103 | synthetic_educational | null | null | [] | |
cda-0015809 | Γ ┘· ─ ┘· K r ┘· ─ ⌐· X· X L ┘· ¬ ⌐· X· X r ⌐ K Γ· ┘· ─ ⌒ Γ· K r· L ─ r ┌· ⌒· ┐· K Γ· ┘· ─ ⌐ └ ⌐ ─ K X· ┌· Γ· ─ ¬· ¬ ┌· ┘· ┐ L L ─ Γ· ¬· ┌ ⌐ ⌒ Γ· K r· r ┌· Γ· ¬ X ⌐ ─ Γ K r· L ¬ ┘· ┌ ¬ L ┌ ⌐ r r· Γ· ─ L ⌐ X K ┌· ┘· ─ ¬· r └ ⌐ Γ· ┌ ─ L L Γ X X K ┌· ┘· ─ ¬· L K· Γ· Γ L ─ r L | Γ ┘· ─ ┘· K r ┘· ─ ⌐· X· X L ┘· ¬ ⌐· X· X r ⌐ K Γ· ┘· ─ ⌒ Γ· K r· L ─ r ┌· ⌒· ┐· K Γ· ┘· ─ ⌐ └ ⌐ ─ K X· ┌· Γ· ─ ¬· ¬ ┌· ┘· ┐ L L ─ Γ· ¬· ┌ ⌐ ⌒ Γ· K r· r ┌· Γ· ¬ X ⌐ ─ Γ K r· L ¬ ┘· ┌ ¬ L ┌ ⌐ r r· Γ· ─ L ⌐ X K ┌· ┘· ─ ¬· r └ ⌐ Γ· ┌ ─ L L Γ X X K ┌· ┘· ─ ¬· L K· Γ· Γ L ─ r L | DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE A STRONG CLAIM NEEDS STRONG EVIDENCE | pigpen | pigpen | null | {} | medium | en | 42 | 42 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
bifid-v3-0186 | RRFSMGBSMGOCSGNHGGVRRFSLGDGHIRKROFCDGHIRWTHNXRBGLPIONROEFAXHISQCSGFIADBBHRMIMGSTDWLDGDGAZBWDNDODUSYDWLNMDBNDYBDDBNDBNDYCOZAWKAZNMGCAYDEALOBNKSODNZNGWMAZLHNHWWK | RRFSMGBSMGOCSGNHGGVRRFSLGDGHIRKROFCDGHIRWTHNXRBGLPIONROEFAXHISQCSGFIADBBHRMIMGSTDWLDGDGAZBWDNDODUSYDWLNMDBNDYBDDBNDBNDYCOZAWKAZNMGCAYDEALOBNKSODNZNGWMAZLHNHWWK | THE LORD OUR GOD IS ONE LORD AND THOU SHALT LOVE THE LORD THY GOD WITH ALL THINE HEART AND WITH ALL THY SOUL AND WITH ALL THY MIGHT AND THESE WORDS WHICH I COMMAND THEE THIS DAY SHALL BE IN THINE HEART | bifid | bifid | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 159 | 159 | cipher_museum | 2.0 | public | null | null |
solitaire-v2-0163 | WNLUVVIGIXBHTPUDWCCLEDXHW | WNLUVVIGIXBHTPUDWCCLEDXHW | SICUT PATRIBUS SIT DEUS NOBIS | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "SCHNEIER"
} | expert | en | 25 | 25 | cipher_museum | 2.0 | public | null | null |
bifid-265 | DHOXDXTCQTWACCUODUKUOBNHKDRETUCUDDHDURTWYAGTXNT | DHOXDXTCQTWACCUODUKUOBNHKDRETUCUDDHDURTWYAGTXNT | ASK NOT WHAT YOUR COUNTRY CAN DO FOR YOU BUT WHAT YOU CAN DO | bifid | bifid | fractionation | {
"type": "keyword",
"value": "ENIGMA"
} | advanced | en | 47 | 47 | cipher_museum | 0.2 | public | null | null |
wheatstone-154 | FQWSPQDTETPQLAQFJTPFQWSPQDTWLOPQLAQFJTP | FQWSPQDTETPQLAQFJTPFQWSPQDTWLOPQLAQFJTP | IT WAS THE BEST OF TIMES IT WAS THE WORST OF TIMES | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 39 | 39 | cipher_museum | 0.2 | public | null | null |
sigaba-187 | BHKPBLNOMZOJYQR | BHKPBLNOMZOJYQR | ABORT MISSION NOW | sigaba | sigaba | machine | {
"type": "seed",
"value": "MUSEUM"
} | expert | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
cda-0003285 | IMMP EJQLFV WTFW MMPFBV BPIFCVB XQ FOGSCRU CPPGMT PJ MIVUFVT ENXBCT | IMMP EJQLFV WTFW MMPFBV BPIFCVB XQ FOGSCRU CPPGMT PJ MIVUFVT ENXBCT | HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS ALWAYS | gronsfeld | gronsfeld | null | {
"key": "141421"
} | medium | en | 57 | 57 | synthetic_educational | null | null | [
"kasiski_examination",
"digit_key_brute_force"
] | Gronsfeld: Vigenère variant with a digit-only key (0–9 per position). |
geheimschreiber-v2-0068 | MFJZOKHGLROADMPTOPSSJOKBIFACGZESVSMARXNYWHISSPVYHLUUKAPXUAVAKEUMSMIPNDKUOMRF | MFJZOKHGLROADMPTOPSSJOKBIFACGZESVSMARXNYWHISSPVYHLUUKAPXUAVAKEUMSMIPNDKUOMRF | BLESSED ARE THE PURE IN HEART FOR THEY SHALL SEE GOD AND BLESSED ARE THE PEACEMAKERS AMONG US | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "BERLIN"
} | expert | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
aeneas-tacticus-v3-0001 | 20 8 5 15 18 1 3 12 5 8 1 19 19 16 15 11 5 14 | 20 8 5 15 18 1 3 12 5 8 1 19 19 16 15 11 5 14 | THE ORACLE HAS SPOKEN | aeneas_tacticus | aeneas_tacticus | steganography | {
"type": "none",
"value": null
} | expert | en | 28 | 45 | cipher_museum | 2.0 | public | null | null |
cda-0013518 | IKWVLPOJLQLCAWECQYXKXURDPKRBNUHQMWMSHBRSRKTDCXDBOAEVGQOAYRKSQJDLCJDUCLWNSSFLSOBPDJYQIVUHBXSHPHXFKFJBMYDBVWLHNBRPVBWGMWHTXGICQSFRLVNPUVKGJTUQMIACMWDHUPKKSXQGPXNBJTTR | IKWVLPOJLQLCAWECQYXKXURDPKRBNUHQMWMSHBRSRKTDCXDBOAEVGQOAYRKSQJDLCJDUCLWNSSFLSOBPDJYQIVUHBXSHPHXFKFJBMYDBVWLHNBRPVBWGMWHTXGICQSFRLVNPUVKGJTUQMIACMWDHUPKKSXQGPXNBJTTR | KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG | vernam | vernam | null | {} | hard | en | 164 | 164 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
cda-0013464 | WEBPCTRXEUYFPYYJWAFOWMQKWFKFYSDHRLOKQWMVRGUWSBVHUDWQVPSVHJKTYTLFLRGUAZLKATNKFHDMRKEKNTJHPCLDRVT | WEBPCTRXEUYFPYYJWAFOWMQKWFKFYSDHRLOKQWMVRGUWSBVHUDWQVPSVHJKTYTLFLRGUAZLKATNKFHDMRKEKNTJHPCLDRVT | FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER | vernam | vernam | null | {} | hard | en | 95 | 95 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
polybius-v3-0049 | 24 44 52 11 43 11 12 42 24 22 23 44 13 34 31 14 14 11 54 24 33 11 35 42 24 31 11 33 14 44 23 15 13 31 34 13 25 43 52 15 42 15 43 44 42 24 25 24 33 22 44 23 24 42 44 15 15 33 11 13 42 34 43 43 44 23 15 13 24 44 54 | 24 44 52 11 43 11 12 42 24 22 23 44 13 34 31 14 14 11 54 24 33 11 35 42 24 31 11 33 14 44 23 15 13 31 34 13 25 43 52 15 42 15 43 44 42 24 25 24 33 22 44 23 24 42 44 15 15 33 11 13 42 34 43 43 44 23 15 13 24 44 54 | IT WAS A BRIGHT COLD DAY IN APRIL AND THE CLOCKS WERE STRIKING THIRTEEN ACROSS THE CITY | polybius | polybius | substitution | {
"type": "none",
"value": null
} | beginner | en | 142 | 212 | cipher_museum | 2.0 | public | null | null |
sigaba-v3-0173 | KUMTOEAGNTDUQYLTGSEMVZTBADKCNKKVYUDYLZVJTRVZJCTKMWUMYGCNNMCDLMALWNORSEVBQRSBCZAEK | KUMTOEAGNTDUQYLTGSEMVZTBADKCNKKVYUDYLZVJTRVZJCTKMWUMYGCNNMCDLMALWNORSEVBQRSBCZAEK | DARWIN OBSERVED THAT SPECIES EVOLVE THROUGH NATURAL SELECTION OVER VAST SPANS OF GEOLOGIC TIME | sigaba | sigaba | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
playfair-la-074 | UFGTNHHKESUFKBICXPQPSY | UFGTNHHKESUFKBICXPQPSY | NEMO ME IMPUNE LACESSIT | playfair | playfair | substitution | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | la | 22 | 22 | cipher_museum | 0.2 | public | null | null |
cda-0016254 | ctaiin ytaiin ypchol qokedy shedy chedy sheol chol qokeedy qokedy okshy kaiiin cheol okshy dainy qotedy okain otain chor choldaiin okain dal okal chedy lkaiin | ctaiin ytaiin ypchol qokedy shedy chedy sheol chol qokeedy qokedy okshy kaiiin cheol okshy dainy qotedy okain otain chor choldaiin okain dal okal chedy lkaiin | OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION THE INDEX OF COINCIDENCE IS A USEFUL CLUE | voynich_render | voynich_render | null | {} | hard | en | 134 | 134 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
null-cipher-v2-0022 | down it very its day each at name did call on name qutn utns each right | down it very its day each at name did call on name qutn utns each right | DIVIDE AND CONQUER | null_cipher | null_cipher | steganography | {
"type": "position",
"value": "first"
} | advanced | en | 56 | 71 | cipher_museum | 2.0 | public | null | null |
cda-0006039 | FHOFGVGHGVBA PVCUREF ZNC RNPU YRGGRE GB N QVSSRERAG YRGGRE QBHOYR GENAFCBFVGVBA NCCYVRF PBYHZANE RAPELCGVBA GJVPR QB ABG PBASHFR BOSHFPNGVBA JVGU RAPELCGVBA | FHOFGVGHGVBA PVCUREF ZNC RNPU YRGGRE GB N QVSSRERAG YRGGRE QBHOYR GENAFCBFVGVBA NCCYVRF PBYHZANE RAPELCGVBA GJVPR QB ABG PBASHFR BOSHFPNGVBA JVGU RAPELCGVBA | SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 136 | 136 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
two-square-v3-0078 | UGLONEEBUROBDDEEPIMLHEINULLLNCCOCECDCOCYPASSAHVIRLCRPHUATSUNUGEOUGLUQMHAHMTWEARS | UGLONEEBUROBDDEEPIMLHEINULLLNCCOCECDCOCYPASSAHVIRLCRPHUATSUNUGEOUGLUQMHAHMTWEARS | THE MOLE BURIED DEEP IN THE INTELLIGENCE AGENCY PASSED VITAL SECRETS TO THE OTHER SIDE FOR YEARS | two_square | two_square | polygraphic | {
"key1": "PALACE",
"key2": "BATTLE"
} | advanced | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
two-square-v3-0021 | UGPUQKMLINBSUASSEGCKHLRTLL | UGPUQKMLINBSUASSEGCKHLRTLL | THE PRINTING PRESS CHANGES ALL | two_square | two_square | polygraphic | {
"key1": "PALACE",
"key2": "BATTLE"
} | advanced | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
polybius-v2-0043 | 12 42 15 51 24 44 54 24 43 44 23 15 43 34 45 31 34 21 52 24 44 11 33 14 44 15 14 24 34 45 43 33 15 43 43 44 23 15 34 45 44 52 11 42 14 21 31 34 45 42 24 43 23 15 43 | 12 42 15 51 24 44 54 24 43 44 23 15 43 34 45 31 34 21 52 24 44 11 33 14 44 15 14 24 34 45 43 33 15 43 43 44 23 15 34 45 44 52 11 42 14 21 31 34 45 42 24 43 23 15 43 | BREVITY IS THE SOUL OF WIT AND TEDIOUSNESS THE OUTWARD FLOURISHES | polybius | polybius | substitution | {
"type": "none",
"value": null
} | beginner | en | 110 | 164 | cipher_museum | 2.0 | public | null | null |
affine-v2-1313 | KPKAY ZEXGKM XKTEXBKV AEFSPO BEUCXV OKBBYMRQXO GCFCLXY DCM GEPZSXAKV BDK ZQLL MSODBSPO | KPKAY ZEXGKM XKTEXBKV AEFSPO BEUCXV OKBBYMRQXO GCFCLXY DCM GEPZSXAKV BDK ZQLL MSODBSPO | ENEMY FORCES REPORTED MOVING TOWARD GETTYSBURG CAVALRY HAS CONFIRMED THE FULL SIGHTING | affine | affine | substitution | {
"a": 15,
"b": 2
} | beginner | en | 75 | 86 | cipher_museum | 2.0 | public | null | null |
enigma-v2-0701 | GECMENTPYKYRANWGFBHSKHCESGZJKVLPXEJAHFSREXIAPCRLCISCIBMELGKMYNH | GECMENTPYKYRANWGFBHSKHCESGZJKVLPXEJAHFSREXIAPCRLCISCIBMELGKMYNH | 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": "PQR"
} | expert | en | 63 | 63 | cipher_museum | 2.0 | public | null | null |
vigenere-v2-1061 | JEIQBTAWTIWUSBTIXIGAAAZRKWCIFIHKHHFDJFYUUOFMEPUMTFJGSQTUWDIHWVQKLPPVWSMKMRJ | JEIQBTAWTIWUSBTIXIGAAAZRKWCIFIHKHHFDJFYUUOFMEPUMTFJGSQTUWDIHWVQKLPPVWSMKMRJ | ENEMY FORCES REPORTED MOVING TOWARD GETTYSBURG CAVALRY HAS CONFIRMED THE FULL SIGHTING | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
running-key-v2-0117 | OMUBTALYZOINGFBAHFYSPVFAS | OMUBTALYZOINGFBAHFYSPVFAS | SICUT PATRIBUS SIT DEUS NOBIS | running_key | running_key | polyalphabetic | {
"type": "text",
"value": "Churchill Dunkirk speech"
} | intermediate | en | 25 | 25 | cipher_museum | 2.0 | public | null | null |
bifid-v3-0145 | KUSIQKICVNCBQVNHUSIQKHSGQFMOSOKEVIHTLRAHRFUDAXSUDGTLRAHOTDUZAFNMNWDZ | KUSIQKICVNCBQVNHUSIQKHSGQFMOSOKEVIHTLRAHRFUDAXSUDGTLRAHOTDUZAFNMNWDZ | IN MY BEGINNING IS MY END AND IN MY END IS MY BEGINNING AS THE QUEEN OF SCOTS KNEW WELL | bifid | bifid | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
voynich-render-v2-0060 | afiie xjdog ore gdoqx gcdxd oqd jcog k issdq uiz siq gcd edsdrxd is izq kxfore rogkir | afiie xjdog ore gdoqx gcdxd oqd jcog k issdq uiz siq gcd edsdrxd is izq kxfore rogkir | BLOOD SWEAT AND TEARS THESE ARE WHAT I OFFER YOU FOR THE DEFENSE OF OUR ISLAND NATION | voynich_render | voynich_render | substitution | {
"type": "none",
"value": null
} | expert | en | 69 | 85 | cipher_museum | 2.0 | public | null | null |
gronsfeld-v3-0319 | NDWJQURAPLURWF | NDWJQURAPLURWF | MARCH TO VICTORY | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "13579"
} | intermediate | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
nihilist-v2-0024 | 65 37 59 96 25 28 34 55 69 56 64 30 36 24 86 87 | 65 37 59 96 25 28 34 55 69 56 64 30 36 24 86 87 | THE WALLS HAVE EARS | nihilist | nihilist | fractionation | {
"polybius": "PALACE",
"keyword": "BATTLE"
} | advanced | en | 32 | 47 | cipher_museum | 2.0 | public | null | null |
trifid-vg-0025 | QJKXOREHMWJFCNMV+AYYMLO+JWTULHERKWTLNBMMCIRBJIFXKGBECVVIGH | QJKXOREHMWJFCNMV+AYYMLO+JWTULHERKWTLNBMMCIRBJIFXKGBECVVIGH | THE LORD WILL FIGHT FOR YOU AND YOU SHALL HOLD YOUR PEACE AND REST IN HIM | trifid | trifid | fractionation | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 58 | 58 | cipher_museum | 2.0 | public | null | null |
running-key-055 | OMSSYFIAWZFFWLF | OMSSYFIAWZFFWLF | SILENCE IS GOLDEN | running_key | running_key | polyalphabetic | {
"type": "text",
"value": "Declaration paraphrase"
} | intermediate | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
polybius-v3-0006 | 44 23 15 22 11 44 15 43 23 34 31 14 21 24 42 32 | 44 23 15 22 11 44 15 43 23 34 31 14 21 24 42 32 | THE GATES HOLD FIRM | polybius | polybius | substitution | {
"type": "none",
"value": null
} | beginner | en | 32 | 47 | cipher_museum | 2.0 | public | null | null |
great-cipher-v2-0069 | 157 168 151 163 157 154 165 119 174 166 143 119 171 102 173 167 174 152 127 145 175 133 109 103 106 119 163 157 116 127 174 133 169 135 128 174 133 169 138 175 100 166 181 138 152 156 143 175 154 161 132 166 151 154 129 167 166 159 100 141 151 177 162 141 170 178 | 157 168 151 163 157 154 165 119 174 166 143 119 171 102 173 167 174 152 127 145 175 133 109 103 106 119 163 157 116 127 174 133 169 135 128 174 133 169 138 175 100 166 181 138 152 156 143 175 154 161 132 166 151 154 129 167 166 159 100 141 151 177 162 141 170 178 | ONCE UPON A MIDNIGHT DREARY WHILE I PONDERED WEAK AND WEARY OVER MANY A QUAINT VOLUME OF LORE | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "VERSAILLES"
} | expert | en | 198 | 263 | cipher_museum | 2.0 | public | null | null |
rail-fence-v2-0299 | WDNSEESRADIREPAAENOEOLRFAOUFUSEFMERINASUSDLLDHUTAAIEETCSRMTLDIHETW | WDNSEESRADIREPAAENOEOLRFAOUFUSEFMERINASUSDLLDHUTAAIEETCSRMTLDIHETW | WE ARE SUCH STUFF AS DREAMS ARE MADE ON AND OUR LITTLE LIFE IS ROUNDED WITH A SLEEP | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 9
} | intermediate | en | 66 | 66 | cipher_museum | 2.0 | public | null | null |
nihilist-v2-0271 | 58 27 70 25 24 46 55 24 26 58 35 27 70 77 26 25 76 43 27 70 74 56 38 58 56 | 58 27 70 25 24 46 55 24 26 58 35 27 70 77 26 25 76 43 27 70 74 56 38 58 56 | SICUT PATRIBUS SIT DEUS NOBIS | nihilist | nihilist | fractionation | {
"polybius": "TRIUMPH",
"keyword": "JUSTICE"
} | advanced | en | 50 | 74 | cipher_museum | 2.0 | public | null | null |
playfair-v3-0662 | GIMACPAGKPEPAGTGMTBV | GIMACPAGKPEPAGTGMTBV | AVE MARIA GRATIA PLENA | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "WISDOM"
} | intermediate | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
cda-0020835 | YYIQL GUKRE PTFPW AZQUY UQVOE XEWUC GPPYH VJMOI PCCFN TMTVC GLWYS HNUKP DWBIA LKSML VWXVK ZWIDW SBTRG HOJPQ NCIOH PUMEF QGHSP AOFOW VQWPA ZPAPX MTECD MLZTU TOOLY WQLAM STVSK XVVGV XAJNV OTR | YYIQL GUKRE PTFPW AZQUY UQVOE XEWUC GPPYH VJMOI PCCFN TMTVC GLWYS HNUKP DWBIA LKSML VWXVK ZWIDW SBTRG HOJPQ NCIOH PUMEF QGHSP AOFOW VQWPA ZPAPX MTECD MLZTU TOOLY WQLAM STVSK XVVGV XAJNV OTR | FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS FAIL CLOSED IS A POSTURE NOT A SLOGAN | running_key | running_key | null | {} | hard | en | 158 | 158 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
monoalphabetic-v2-0685 | FQJY LM KLQTBOQK VCQACKCF SUQQOKDOQS FT FNNLJFTTLX ELUQTBLUSO TBO WFQ CK TBO OFST CS LVOQ | FQJY LM KLQTBOQK VCQACKCF SUQQOKDOQS FT FNNLJFTTLX ELUQTBLUSO TBO WFQ CK TBO OFST CS LVOQ | ARMY OF NORTHERN VIRGINIA SURRENDERS AT APPOMATTOX COURTHOUSE THE WAR IN THE EAST IS OVER | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "FREEDOM"
} | beginner | en | 75 | 89 | cipher_museum | 2.0 | public | null | null |
slidex-v2-0135 | SSIIHIDWULIMYPHI | SSIIHIDWULIMYPHI | THE HARBOR IS CLEAR | slidex | slidex | transposition | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
nomenclator-v2-0200 | 18 05 03 15 14 14 15 09 20 05 18 60 05 14 05 13 25 16 15 19 09 20 09 15 14 61 18 05 16 15 18 20 02 01 03 11 02 05 06 15 18 05 14 09 07 08 20 06 01 12 12 23 09 20 08 01 06 21 12 12 19 20 18 05 14 07 20 08 03 15 21 14 20 | 18 05 03 15 14 14 15 09 20 05 18 60 05 14 05 13 25 16 15 19 09 20 09 15 14 61 18 05 16 15 18 20 02 01 03 11 02 05 06 15 18 05 14 09 07 08 20 06 01 12 12 23 09 20 08 01 06 21 12 12 19 20 18 05 14 07 20 08 03 15 21 14 20 | RECONNOITER THE ENEMY POSITION AND REPORT BACK BEFORE NIGHTFALL WITH A FULL STRENGTH COUNT | nomenclator | nomenclator | nomenclator | {
"type": "seed",
"value": "PALACE"
} | expert | en | 146 | 218 | cipher_museum | 2.0 | public | null | null |
caesar-096 | HSS AOL DVYSKZ H ZAHNL HUK HSS AOL TLU HUK DVTLU TLYLSF WSHFLYZ | HSS AOL DVYSKZ H ZAHNL HUK HSS AOL TLU HUK DVTLU TLYLSF WSHFLYZ | ALL THE WORLDS A STAGE AND ALL THE MEN AND WOMEN MERELY PLAYERS | caesar | caesar | substitution | {
"type": "shift",
"value": 7
} | beginner | en | 51 | 63 | cipher_museum | 0.2 | public | null | null |
two-square-060 | DMLGEZVOSAFPMIFLECER | DMLGEZVOSAFPMIFLECER | RENDEZVOUS AT MIDNIGHT | two_square | two_square | polygraphic | {
"key1": "CIPHER",
"key2": "MUSEUM"
} | advanced | en | 20 | 20 | cipher_museum | 0.2 | public | null | null |
cda-0015770 | K r· L ┌· ⌐ Γ· └ ⌐· L ─ r L r Γ· ┐· r· L ┌· ⌒ ┌· Γ· K L X K L ⌣ K Γ· ─ ⌐ ⌣· Γ· ¬· ⌣· ⌐ ¬· ┐· ⌐ K K L ┌· ─ ┌· ┘· X· K L r Γ· ┐· r· L ┌· X ┌· L ⌐ Γ ⌐ ¬· ┌· Γ· Γ Γ· ─ ⌐ ┐· ┌· L X r ┌· Γ· ¬ L Γ ¬· L ┘· ┌ L K ┌· Γ· r ┐· ⌐ K K L ┌· ─ K r· L K· Γ· ¬· L ─ L ┌· L r Γ· ┐· r· L ┌· X· X L X ⌐ ┌· L ┐· L ⌐ K Γ· ─ ¬· ┐ L ⌒· ⌒ ┘· ┌· Γ... | K r· L ┌· ⌐ Γ· └ ⌐· L ─ r L r Γ· ┐· r· L ┌· ⌒ ┌· Γ· K L X K L ⌣ K Γ· ─ ⌐ ⌣· Γ· ¬· ⌣· ⌐ ¬· ┐· ⌐ K K L ┌· ─ ┌· ┘· X· K L r Γ· ┐· r· L ┌· X ┌· L ⌐ Γ ⌐ ¬· ┌· Γ· Γ Γ· ─ ⌐ ┐· ┌· L X r ┌· Γ· ¬ L Γ ¬· L ┘· ┌ L K ┌· Γ· r ┐· ⌐ K K L ┌· ─ K r· L K· Γ· ¬· L ─ L ┌· L r Γ· ┐· r· L ┌· X· X L X ⌐ ┌· L ┐· L ⌐ K Γ· ─ ¬· ┐ L ⌒· ⌒ ┘· ┌· Γ... | THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN THE VIGENERE CIPHER USES A REPEATING KEYWORD A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG | pigpen | pigpen | null | {} | medium | en | 70 | 70 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
stager-route-v3-0243 | TLSHEXXAPXXPLXXEFXXALX | TLSHEXXAPXXPLXXEFXXALX | THE APPLE FALLS | stager_route | stager_route | transposition | {
"type": "integer",
"value": 11
} | expert | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
vernam-v3-0064 | GFPHVFRZPNBXMAAPHTZXXOKQFDSFCWLWUBOQQPAEUXQTMMNDJDYRIYVBQNRLERNPBNHWEWJNCI | GFPHVFRZPNBXMAAPHTZXXOKQFDSFCWLWUBOQQPAEUXQTMMNDJDYRIYVBQNRLERNPBNHWEWJNCI | GENERAL SHERMAN MARCHED TO THE SEA THROUGH GEORGIA CUTTING A SIXTY MILE WIDE PATH OF RUIN | vernam | vernam | stream | {
"type": "pad",
"value": "ABCDEFGH (repeating)"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
commercial-code-v2-0067 | GABAB BABAB ZUZUZ CAZUZ GAZUZ JAZUZ LAZUZ RAZUZ RAZUZ LAZUZ RAZUZ JAZUZ XUZUZ ZUZUZ JAZUZ SAZUZ FAZUZ XUZUZ ZUZUZ DAZUZ WAZUZ GAZUZ BAZUZ ZAZUZ GAZUZ FAZUZ XUZUZ BABAB ZUZUZ KAZUZ GAZUZ BAZUZ CEZUZ GAZUZ RAZUZ XUZUZ DABAB BABAB ZUZUZ GAZUZ BAZUZ WAZUZ ZAZUZ KAZUZ XUZUZ DABAB ZUZUZ FAZUZ BAZUZ WAZUZ NAZUZ RAZUZ GAZUZ XA... | GABAB BABAB ZUZUZ CAZUZ GAZUZ JAZUZ LAZUZ RAZUZ RAZUZ LAZUZ RAZUZ JAZUZ XUZUZ ZUZUZ JAZUZ SAZUZ FAZUZ XUZUZ ZUZUZ DAZUZ WAZUZ GAZUZ BAZUZ ZAZUZ GAZUZ FAZUZ XUZUZ BABAB ZUZUZ KAZUZ GAZUZ BAZUZ CEZUZ GAZUZ RAZUZ XUZUZ DABAB BABAB ZUZUZ GAZUZ BAZUZ WAZUZ ZAZUZ KAZUZ XUZUZ DABAB ZUZUZ FAZUZ BAZUZ WAZUZ NAZUZ RAZUZ GAZUZ XA... | IN THE BEGINNING GOD CREATED THE HEAVEN AND THE EARTH AND DARKNESS WAS UPON THE FACE OF DEEP | commercial_code | commercial_code | codebook | {
"type": "none",
"value": null
} | expert | en | 405 | 485 | cipher_museum | 2.0 | public | null | null |
jn25-105 | 37180 37189 37182 37103 37186 37195 37196 37191 37106 37186 37191 37183 37186 37188 37102 37195 37191 37196 37187 37180 37188 37189 37191 37190 37182 37180 37185 37191 37189 37186 37184 37182 37197 37191 37182 37180 37195 37191 37196 37191 37189 37186 37184 37199 37186 37104 | 37180 37189 37182 37103 37186 37195 37196 37191 37106 37186 37191 37183 37186 37188 37102 37195 37191 37196 37187 37180 37188 37189 37191 37190 37182 37180 37185 37191 37189 37186 37184 37182 37197 37191 37182 37180 37195 37191 37196 37191 37189 37186 37184 37199 37186 37104 | I HAVE NOT YET BEGUN TO FIGHT SAID THE CAPTAIN TO THE CREW | jn25 | jn25 | codebook | {
"type": "additive",
"value": "27182"
} | expert | en | 230 | 275 | cipher_museum | 0.2 | public | null | null |
two-square-v2-0423 | QNFQECDRTOBLNNSKBFAHEAAFQINNSKBFPURAPBRMNEPUCQATATHOBKNNTXOUVEGWFAAGFTEEAV | QNFQECDRTOBLNNSKBFAHEAAFQINNSKBFPURAPBRMNEPUCQATATHOBKNNTXOUVEGWFAAGFTEEAV | THE SECRET OF GETTING AHEAD IS GETTING STARTED ONE STEP AT A TIME GETS YOU VERY FAR INDEED | two_square | two_square | polygraphic | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0012615 | THET ZITH EXIU SCIP HERA DVAN CEST HXAL PHAB ETBY ONEP XSIT IZNE ACHL ETTZ RFRI ZDMA NEST IMZT EDKE YLEN XTHF RXMS TATI STIZ SMOD XRNE NCRY PTZO NISN OTBR OKEN BXLE TTER FREQ UENC XTHE FXUR SQXA RECX PHER XSES TWOK EYWO RDPZ LYBI USSQ UARE SCA | THET ZITH EXIU SCIP HERA DVAN CEST HXAL PHAB ETBY ONEP XSIT IZNE ACHL ETTZ RFRI ZDMA NEST IMZT EDKE YLEN XTHF RXMS TATI STIZ SMOD XRNE NCRY PTZO NISN OTBR OKEN BXLE TTER FREQ UENC XTHE FXUR SQXA RECX PHER XSES TWOK EYWO RDPZ LYBI USSQ UARE SCA | THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES | commercial_code | commercial_code | null | {} | hard | en | 195 | 195 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
cda-0003722 | VARRK BS QBVAQVRSANS ZNOFHERF YRGGRE TERDHNAQL RVFGEVPHGNBA OA OTSVAR QNCUSE OCCYWRF O YVAROE SHAPGNBA GB NOQU YRGGRE BCNA FBHEQS GBBYF OYYBJ VANRCRARRAG INEVSWPOGVBA FNQHEWGL QYOWZF FUBHYR PR GSFGSN HAQNE FNEHGNAL | VARRK BS QBVAQVRSANS ZNOFHERF YRGGRE TERDHNAQL RVFGEVPHGNBA OA OTSVAR QNCUSE OCCYWRF O YVAROE SHAPGNBA GB NOQU YRGGRE BCNA FBHEQS GBBYF OYYBJ VANRCRARRAG INEVSWPOGVBA FNQHEWGL QYOWZF FUBHYR PR GSFGSN HAQNE FNEHGNAL | INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY | porta | porta | null | {
"key": "CIPHER"
} | hard | en | 185 | 185 | synthetic_educational | null | null | [
"kasiski_examination",
"index_of_coincidence"
] | Porta: 13-row table polyalphabetic cipher; reciprocal (encrypt = decrypt). |
geheimschreiber-v2-0253 | VZTTHMKEFEKC | VZTTHMKEFEKC | THE DIE IS CAST | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "GOTHIC"
} | expert | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
two-square-v3-0292 | KCORHTDZMRTOGW | KCORHTDZMRTOGW | MARCH TO VICTORY | two_square | two_square | polygraphic | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
purple-v3-0268 | UQCOYPPBJAFSLJZMXAEUHVOLYWXLGPWCZYFGJRFXBWWGIVOXEOSGVZXFQQFVCNPWLXBNHLHAIL | UQCOYPPBJAFSLJZMXAEUHVOLYWXLGPWCZYFGJRFXBWWGIVOXEOSGVZXFQQFVCNPWLXBNHLHAIL | CHARGE OF THE LIGHT BRIGADE INTO THE VALLEY OF DEATH RODE THE SIX HUNDRED BRAVE CAVALIERS | purple | purple | machine | {
"type": "seed",
"value": "SAKURA"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v2-0467 | OALFBBJVTZHBCAZHMHOSKSSKAVNTXUKYIRRPTHZBFXADWSMHPQJZVVHEZDWRNPKAOWLDAVTNHMUVGBUQ | OALFBBJVTZHBCAZHMHOSKSSKAVNTXUKYIRRPTHZBFXADWSMHPQJZVVHEZDWRNPKAOWLDAVTNHMUVGBUQ | THE BABINGTON PLOT TO ASSASSINATE QUEEN ELIZABETH WAS UNCOVERED BY FRANCIS WALSINGHAM IN TIME | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "VENICE"
} | advanced | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
cda-0008023 | PIFSNORBSILGCOKOKGOUNIFYIMPSAYZRWXVQEYBHLSYCMBFPLUSVHJPSLBJPCSUNXZGUBHTTLQBRWCGBHTQSZVIXHGCIUBEZTTMKVXGLYIZHWUEIZJMNDVWNAYRFKMXIOCDIVQIEPRGZKRQRUFGTAVWDSSTZHGBPJPRRRUXSM | PIFSNORBSILGCOKOKGOUNIFYIMPSAYZRWXVQEYBHLSYCMBFPLUSVHJPSLBJPCSUNXZGUBHTTLQBRWCGBHTQSZVIXHGCIUBEZTTMKVXGLYIZHWUEIZJMNDVWNAYRFKMXIOCDIVQIEPRGZKRQRUFGTAVWDSSTZHGBPJPRRRUXSM | DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE HONESTLY | autokey | autokey | null | {
"primer": "MUSEUM"
} | hard | en | 169 | 169 | synthetic_educational | null | null | [] | |
trifid-v2-0377 | EDHMILDSBPSYHREFOIYRWPPIMKFJNAEIBPQFTCZTIDWBVSOXFWFBHNGAPREIJ+OFIPRFONSGVIYLOSFPVOIFYEPIJKMDKHURU+PULOHKDY+RDCERSQVKIKLLLAINLWNECGRNQNMBETOACCJUTEKSJRCVEZCRPOFPADOKLFBHAH+C | EDHMILDSBPSYHREFOIYRWPPIMKFJNAEIBPQFTCZTIDWBVSOXFWFBHNGAPREIJ+OFIPRFONSGVIYLOSFPVOIFYEPIJKMDKHURU+PULOHKDY+RDCERSQVKIKLLLAINLWNECGRNQNMBETOACCJUTEKSJRCVEZCRPOFPADOKLFBHAH+C | THE GREAT CIPHER OF LOUIS XIV INVENTED BY ANTOINE AND BONAVENTURE ROSSIGNOL USED A NOMENCLATOR OF OVER FIVE HUNDRED NUMBERS REPRESENTING SYLLABLES WORDS AND NULLS AND REMAINED UNBROKEN FOR TWO CENTURIES | trifid | trifid | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 172 | 172 | cipher_museum | 2.0 | public | null | null |
affine-v2-0244 | BII TBJI ZD KZMZKNK ZOGR GWANN UBAGD RON RQ PWZHW GWN ENITBN ZOWBEZG GWN BXJZGBOZ BORGWNA BOK GWN GWZAK GWRDN PWR ZO GWNZA RPO IBOTJBTN BAN HBIINK HNIGD ZO RJAD TBJID | BII TBJI ZD KZMZKNK ZOGR GWANN UBAGD RON RQ PWZHW GWN ENITBN ZOWBEZG GWN BXJZGBOZ BORGWNA BOK GWN GWZAK GWRDN PWR ZO GWNZA RPO IBOTJBTN BAN HBIINK HNIGD ZO RJAD TBJID | ALL GAUL IS DIVIDED INTO THREE PARTS ONE OF WHICH THE BELGAE INHABIT THE AQUITANI ANOTHER AND THE THIRD THOSE WHO IN THEIR OWN LANGUAGE ARE CALLED CELTS IN OURS GAULS | affine | affine | substitution | {
"a": 3,
"b": 1
} | beginner | en | 136 | 166 | cipher_museum | 2.0 | public | null | null |
trifid-v2-0301 | EXGM+LBIWKUL+FDCSPOFQLHF+IT++PIYDTGWERH+YFHKSDIMLWLRKPVFGFMRBRUQQBQINY | EXGM+LBIWKUL+FDCSPOFQLHF+IT++PIYDTGWERH+YFHKSDIMLWLRKPVFGFMRBRUQQBQINY | THE QUALITY OF MERCY IS NOT STRAINED IT DROPPETH AS THE GENTLE RAIN FROM HEAVEN ABOVE | trifid | trifid | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 70 | 70 | cipher_museum | 2.0 | public | null | null |
kryha-085 | MLUYEAWXDJMDYAC | MLUYEAWXDJMDYAC | SILENCE IS GOLDEN | kryha | kryha | machine | {
"type": "keyword",
"value": "CIPHER"
} | expert | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
enigma-v3-0016 | CMRNRBPKVWATESCOZ | CMRNRBPKVWATESCOZ | ARCHERS TO THE WALLS | enigma | enigma | machine | {
"type": "rotor_start",
"value": "ABC"
} | expert | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
geheimschreiber-v2-0316 | VDPVUFEUANPOYTDWFBMUVICOCGISCEKYZRURNFPIKBWIFGGUHRBLUVZEBQJMJLJHAEZAZICFKSF | VDPVUFEUANPOYTDWFBMUVICOCGISCEKYZRURNFPIKBWIFGGUHRBLUVZEBQJMJLJHAEZAZICFKSF | TRUST IN THE LORD WITH ALL THINE HEART AND LEAN NOT UNTO THINE OWN UNDERSTANDING IN ALL WAYS | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "GOTHIC"
} | expert | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v3-0191 | IIAIEIINUBTAHRLFESTRHMAONPSMSEEADNUOEAEANHNMBSTIMAGNSCRBNGNLMETAOLGIBEECAOMSTKEK | IIAIEIINUBTAHRLFESTRHMAONPSMSEEADNUOEAEANHNMBSTIMAGNSCRBNGNLMETAOLGIBEECAOMSTKEK | THE ENIGMA MACHINE HAD AN ASTRONOMICAL NUMBER OF POSSIBLE SETTINGS MAKING IT SEEM UNBREAKABLE | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "FORTRESS"
} | intermediate | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
beaufort-v2-0929 | GKMYWAYAHUWGNNCWJYWSGKOVLOSPYAZPNPEIXBHHZHYDEKWKALASCXOPGGTIAAHYKX | GKMYWAYAHUWGNNCWJYWSGKOVLOSPYAZPNPEIXBHHZHYDEKWKALASCXOPGGTIAAHYKX | WE ARE SUCH STUFF AS DREAMS ARE MADE ON AND OUR LITTLE LIFE IS ROUNDED WITH A SLEEP | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "COMPASS"
} | intermediate | en | 66 | 66 | cipher_museum | 2.0 | public | null | null |
cda-0005235 | TEOHFFTTODSEETATDHSWEAREHFETYVENHEESWMIISECNILEMHRLBOHELETIOCMERNOEXENETSDUNIEANYENAXSSRHTMSDNTTGSEETXTSEOHAEECOETYDSMXLHTDENSXIEKHSSTOX | TEOHFFTTODSEETATDHSWEAREHFETYVENHEESWMIISECNILEMHRLBOHELETIOCMERNOEXENETSDUNIEANYENAXSSRHTMSDNTTGSEETXTSEOHAEECOETYDSMXLHTDENSXIEKHSSTOX | THE BEST LESSONS SHOW WHERE THE METHOD FAILS THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | scytale | scytale | null | {
"cols": 8
} | hard | en | 136 | 136 | synthetic_educational | null | null | [
"column_count_search",
"anagram_recovery"
] | Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter. |
lorenz-v3-0275 | THEJOURNEYOFATHOUSANDMILESBEGINSWITHASINGLESTEPASLAOTZUWROTELONGAGOINCHINA | THEJOURNEYOFATHOUSANDMILESBEGINSWITHASINGLESTEPASLAOTZUWROTELONGAGOINCHINA | THE JOURNEY OF A THOUSAND MILES BEGINS WITH A SINGLE STEP AS LAO TZU WROTE LONG AGO IN CHINA | lorenz | lorenz | machine | {
"type": "seed",
"value": "COLOSSUS"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-162 | UVAGXHYVCGLRAWVYIIJEEKMVWSHJIVMVKEKVGQOLRBUEVZSGKJTFQTVZGIWTJMGJ | UVAGXHYVCGLRAWVYIIJEEKMVWSHJIVMVKEKVGQOLRBUEVZSGKJTFQTVZGIWTJMGJ | CRYPTOGRAPHY IS THE PRACTICE OF SECURING COMMUNICATIONS FROM ADVERSARIES | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "SECRET"
} | intermediate | en | 64 | 64 | cipher_museum | 0.2 | public | null | null |
cda-0012187 | group raids other north seeks flank enemy large delay until shore early scout array delay incur given intel turns swift enemy quick under early north | group raids other north seeks flank enemy large delay until shore early scout array delay incur given intel turns swift enemy quick under early north | GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION ATBASH ENCODES BY REVERSING THE ALPHABET THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS | 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. |
morse-code-v2-0025 | - .-. ..- ... - / -... ..- - / ...- . .-. .. ..-. -.-- | - .-. ..- ... - / -... ..- - / ...- . .-. .. ..-. -.-- | TRUST BUT VERIFY | morse_code | morse_code | encoding | {
"type": "none",
"value": null
} | beginner | en | 39 | 54 | cipher_museum | 2.0 | public | null | null |
rail-fence-v2-0610 | GNHTKEOESAGHSNRASLNEIEELNLIADRBLOBSPRAMCIEUPELUOTEDRHONMANEOPRSMCCTVIDRUIRPECENYD | GNHTKEOESAGHSNRASLNEIEELNLIADRBLOBSPRAMCIEUPELUOTEDRHONMANEOPRSMCCTVIDRUIRPECENYD | GENERAL ORDERS NUMBER ONE ALL COMMUNICATIONS SHALL BE ENCRYPTED USING THE APPROVED CIPHER DISK | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 11
} | intermediate | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
cda-0013306 | GROUP ROUTE ORDER NAVAL SEEKS FIELD EIGHT LEADS DEPOT UNDER SCOUT ENEMY SWIFT ABOVE DRIVE INPUT GROUP ISSUE TRACK SCOUT EARLY QUIET UNDER ENEMY NEEDS | GROUP ROUTE ORDER NAVAL SEEKS FIELD EIGHT LEADS DEPOT UNDER SCOUT ENEMY SWIFT ABOVE DRIVE INPUT GROUP ISSUE TRACK SCOUT EARLY QUIET UNDER ENEMY NEEDS | GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | 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-0018830 | 6284 7299 4737 06040 05405 6684 00377 5691 01584 00972 2882 05051 02549 1637 05660 01642 4479 00992 5666 07926 05041 06369 05970 1307 02865 2209 05705 00343 5040 02563 6057 7279 02883 06305 2527 06333 7276 4753 05045 4756 3840 7859 0708 02888 06677 05966 0374 3859 05112 2529 00375 0660 01632 06371 6065 6375 2519 01633 ... | 6284 7299 4737 06040 05405 6684 00377 5691 01584 00972 2882 05051 02549 1637 05660 01642 4479 00992 5666 07926 05041 06369 05970 1307 02865 2209 05705 00343 5040 02563 6057 7279 02883 06305 2527 06333 7276 4753 05045 4756 3840 7859 0708 02888 06677 05966 0374 3859 05112 2529 00375 0660 01632 06371 6065 6375 2519 01633 ... | TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM | zimmermann | zimmermann | null | {} | hard | en | 228 | 228 | synthetic_educational | null | null | [
"codebook_frequency",
"number_group_analysis"
] | Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher. |
two-square-v2-0368 | BPDEDMFQSADBBSLLRZSX | BPDEDMFQSADBBSLLRZSX | CODED MESSAGE FOLLOWS | two_square | two_square | polygraphic | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
culper-ring-v2-0096 | 100 998 825 808 812 812 804 817 812 800 813 813 999 998 819 804 811 804 806 817 800 812 999 998 822 800 818 999 998 803 804 802 814 803 804 803 999 114 998 817 814 814 812 999 998 805 814 817 819 824 999 104 235 102 998 801 817 814 820 806 807 819 999 998 800 812 804 817 808 802 800 999 151 100 998 806 817 804 800 819 ... | 100 998 825 808 812 812 804 817 812 800 813 813 999 998 819 804 811 804 806 817 800 812 999 998 822 800 818 999 998 803 804 802 814 803 804 803 999 114 998 817 814 814 812 999 998 805 814 817 819 824 999 104 235 102 998 801 817 814 820 806 807 819 999 998 800 812 804 817 808 802 800 999 151 100 998 806 817 804 800 819 ... | THE ZIMMERMANN TELEGRAM WAS DECODED BY ROOM FORTY IN LONDON AND BROUGHT AMERICA INTO THE GREAT WAR | culper_ring | culper_ring | codebook | {
"type": "none",
"value": null
} | expert | en | 258 | 343 | cipher_museum | 2.0 | public | null | null |
kryptos-v2-0466 | IXKPIFZQHFRDQVAFINIOAGEWVJSFLEBKJTKJHYVQFILGVNSGTIEZNHYTICJVJQHFMPLDYQLJWZASFIM | IXKPIFZQHFRDQVAFINIOAGEWVJSFLEBKJTKJHYVQFILGVNSGTIEZNHYTICJVJQHFMPLDYQLJWZASFIM | CLAUDE SHANNON PROVED THAT THE ONE TIME PAD ACHIEVES PERFECT SECRECY WHEN USED CORRECTLY ONCE | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "SANBORN"
} | advanced | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
m209-031 | IAVQVAKWZMZMNKKUKLPCANYSYALVAAPKKWELESRRBPEMADOZDIZBZNJDQ | IAVQVAKWZMZMNKKUKLPCANYSYALVAAPKKWELESRRBPEMADOZDIZBZNJDQ | WE HOLD THESE TRUTHS TO BE SELF EVIDENT THAT ALL MEN ARE CREATED EQUAL | m209 | m209 | machine | {
"type": "seed",
"value": "HAGELIN"
} | expert | en | 57 | 57 | cipher_museum | 0.2 | public | null | null |
trithemius-v2-0030 | WJUGSR MBIAND FUS VQKW | WJUGSR MBIAND FUS VQKW | WISDOM GUARDS THE GATE | trithemius | trithemius | polyalphabetic | {
"type": "none",
"value": null
} | beginner | en | 19 | 22 | cipher_museum | 2.0 | public | null | null |
adfgvx-v3-0177 | AGAGFVDDFVFDDXAGAFAFAXAFAAAXAAAGAGFGGFFFAGAFAAVAGAGDDAXDAAAAFGADAFAFDXAVFFAAAGAVADDVDFAGGGGAGDXGAFDAVFADGAAADDVGDGFFAAAVAAADFGFGFADGFFGDFGFAFAAXAXDGDDGDAAGF | AGAGFVDDFVFDDXAGAFAFAXAFAAAXAAAGAGFGGFFFAGAFAAVAGAGDDAXDAAAAFGADAFAFDXAVFFAAAGAVADDVDFAGGGGAGDXGAFDAVFADGAAADDVGDGFFAAAVAAADFGFGFADGFFGDFGFAFAAXAXDGDDGDAAGF | BLESSED ARE THE MEEK FOR THEY SHALL INHERIT THE EARTH AND THE PEACEMAKERS SHALL BE CALLED SONS | adfgvx | adfgvx | fractionation | {
"polybius": "LIBERTY",
"columnar": "FREEDOM"
} | advanced | en | 156 | 156 | cipher_museum | 2.0 | public | null | null |
kryptos-v3-0233 | OPBOZEOADQTHFHI | OPBOZEOADQTHFHI | CHART THE UNKNOWN | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "VIRTUAL"
} | advanced | en | 15 | 15 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v3-0398 | VLWATVJGBFTPFEBFENTNLRLTHDHLVGALYHVBXHVLTTXWSRVGKBBHDRFKMVKNGVMHSUKULAGFHXGVBWB | VLWATVJGBFTPFEBFENTNLRLTHDHLVGALYHVBXHVLTTXWSRVGKBBHDRFKMVKNGVMHSUKULAGFHXGVBWB | ALL PERSONS BORN OR NATURALIZED IN THE UNITED STATES ARE CITIZENS SUBJECT TO EQUAL PROTECTION | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "VENICE"
} | advanced | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-v2-0183 | AKULJFMUKYKKDBIQQURTAZEZHUMTKLBOSIEUIMZWKMRPCKVZXDVYKPWINWIYGOIKHDSOMRNKMUKYK | AKULJFMUKYKKDBIQQURTAZEZHUMTKLBOSIEUIMZWKMRPCKVZXDVYKPWINWIYGOIKHDSOMRNKMUKYK | SUPPLY LINES HAVE BEEN CUT RATIONS FOR THREE DAYS ONLY AWAIT RESUPPLY OR BREAK THROUGH LINES | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "6,1,4,2,5,3"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
sigaba-v2-0319 | IXZXJHXMSYVKJJJXQZRHOTMRCCUDSINBYULHGTQYQJDXFXHDJEDVSSKAXERSKHXFHTODMALHPXC | IXZXJHXMSYVKJJJXQZRHOTMRCCUDSINBYULHGTQYQJDXFXHDJEDVSSKAXERSKHXFHTODMALHPXC | IN THE BEGINNING GOD CREATED THE HEAVEN AND THE EARTH AND DARKNESS WAS UPON THE FACE OF DEEP | sigaba | sigaba | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
slidex-v2-0130 | JKFFNTOCBBSADL | JKFFNTOCBBSADL | STORM THE BREACH | slidex | slidex | transposition | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
two-square-v3-0125 | TAVCYHSIVKTHOUYFLTREPONTCSIOPV | TAVCYHSIVKTHOUYFLTREPONTCSIOPV | TAXATION WITHOUT REPRESENTATION | two_square | two_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 30 | 30 | cipher_museum | 2.0 | public | null | null |
adfgx-v3-0460 | DDFXGXDADGFXDAGGFXDXGAGGGXDXFDDGADAXGDXXDXDAGFGDFXGGGADADAFFDGFDDXXFAGDAXADDFGFFADFADXAGXAXFXDGDFDFFXAGDGFXFXDFFXDXGXGXGFFXGDAXDGAGGFDAFAXDDDDAXGDAXGAGDGX | DDFXGXDADGFXDAGGFXDXGAGGGXDXFDDGADAXGDXXDXDAGFGDFXGGGADADAFFDGFDDXXFAGDAXADDFGFFADFADXAGXAXFXDGDFDFFXAGDGFXFXDFFXDXGXGXGFFXGDAXDGAGGFDAFAXDDDDAXGDAXGAGDGX | THE RIGHT OF THE PEOPLE TO KEEP AND BEAR ARMS SHALL NOT BE INFRINGED BY THE FEDERAL GOVERNMENT | adfgx | adfgx | fractionation | {
"polybius": "WISDOM",
"columnar": "COURAGE"
} | advanced | en | 154 | 154 | cipher_museum | 2.0 | public | null | null |
cda-0021087 | ⟨w08⟩ ⟨a07⟩ ⟨w08⟩ ⟨a23⟩ ⟨a23⟩ ⟨w32⟩ ⟨a07⟩ ⟨w20⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w08⟩ ⟨a13⟩ ⟨a13⟩ ⟨a01⟩ ⟨w32⟩ ⟨w20⟩ ⟨w22⟩ ⟨w08⟩ ⟨a01⟩ ⟨w32⟩ ⟨a07⟩ ⟨w20⟩ ⟨w08⟩ ⟨a19⟩ ⟨a23⟩ ⟨w28⟩ ⟨a07⟩ ⟨w14⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨a25⟩ ⟨w10⟩ ⟨w20⟩ ⟨w08⟩ ⟨w14⟩ ⟨a29⟩ ⟨a01⟩ ⟨w20⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a19⟩ ⟨a13⟩ ⟨w10⟩ ⟨a01⟩ ⟨w40⟩ ⟨a11⟩ ⟨w... | ⟨w08⟩ ⟨a07⟩ ⟨w08⟩ ⟨a23⟩ ⟨a23⟩ ⟨w32⟩ ⟨a07⟩ ⟨w20⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w08⟩ ⟨a13⟩ ⟨a13⟩ ⟨a01⟩ ⟨w32⟩ ⟨w20⟩ ⟨w22⟩ ⟨w08⟩ ⟨a01⟩ ⟨w32⟩ ⟨a07⟩ ⟨w20⟩ ⟨w08⟩ ⟨a19⟩ ⟨a23⟩ ⟨w28⟩ ⟨a07⟩ ⟨w14⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨a25⟩ ⟨w10⟩ ⟨w20⟩ ⟨w08⟩ ⟨w14⟩ ⟨a29⟩ ⟨a01⟩ ⟨w20⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a19⟩ ⟨a13⟩ ⟨w10⟩ ⟨a01⟩ ⟨w40⟩ ⟨a11⟩ ⟨w... | AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | babington | babington | null | {} | hard | en | 145 | 145 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
wallis-cipher-v2-0142 | 90 75 85 37 63 55 91 90 27 89 91 163 | 90 75 85 37 63 55 91 90 27 89 91 163 | COVER MY RETREAT | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "ENGLAND"
} | expert | en | 25 | 36 | cipher_museum | 2.0 | public | null | null |
cda-0013896 | OBSER VABLE EVIDE NCECO MESBE FOREC ONFIX ENCEZ OUBLE TRANX POSIT IONAZ PLIES COLUM NAREN CRYPT IONTW ICETZ ANSPO SITIZ NCIPZ ERSRX ARRAN GELEZ TERSW ITHOU TSUBS TITUT IONSL OWLYE | OBSER VABLE EVIDE NCECO MESBE FOREC ONFIX ENCEZ OUBLE TRANX POSIT IONAZ PLIES COLUM NAREN CRYPT IONTW ICETZ ANSPO SITIZ NCIPZ ERSRX ARRAN GELEZ TERSW ITHOU TSUBS TITUT IONSL OWLYE | OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION SLOWLY | commercial_code | commercial_code | null | {} | hard | en | 150 | 150 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
scytale-v2-0480 | LATUCDEVNSSILELEFNOFEEBIRASITLRDPETNMMNLUAETRFIOOIATNMXTRTRTSRIAIXGAOTSSEOILX | LATUCDEVNSSILELEFNOFEEBIRASITLRDPETNMMNLUAETRFIOOIATNMXTRTRTSRIAIXGAOTSSEOILX | LIBERTÉ ÉGALITÉ FRATERNITÉ OU LA MORT CES MOTS DÉFINISSENT LA REVOLUTION FRANÇAISE DE MIL SEPT | scytale | scytale | transposition | {
"type": "integer",
"value": 11
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
adfgvx-v2-0531 | DFDAFXVAVDFAGFVXVDGDGDFAFA | DFDAFXVAVDFAGFVXVDGDGDFAFA | HONOR ABOVE ALL | adfgvx | adfgvx | fractionation | {
"polybius": "KAISER",
"columnar": "BERLIN"
} | advanced | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
cda-0015889 | 61 34 49 23 62 4 1 70 22 50 25 66 40 82 91 23 52 80 48 41 96 33 99 24 68 88 61 58 76 40 43 91 1 25 66 50 91 66 35 43 25 17 33 26 81 48 91 49 40 23 63 82 62 49 43 68 17 48 45 34 22 68 59 21 82 30 39 92 32 99 67 3 48 2 80 82 67 30 33 93 61 32 50 23 62 21 26 3 34 48 35 60 96 92 91 17 22 93 70 62 23 53 26 61 21 26 66 15 35... | 61 34 49 23 62 4 1 70 22 50 25 66 40 82 91 23 52 80 48 41 96 33 99 24 68 88 61 58 76 40 43 91 1 25 66 50 91 66 35 43 25 17 33 26 81 48 91 49 40 23 63 82 62 49 43 68 17 48 45 34 22 68 59 21 82 30 39 92 32 99 67 3 48 2 80 82 67 30 33 93 61 32 50 23 62 21 26 3 34 48 35 60 96 92 91 17 22 93 70 62 23 53 26 61 21 26 66 15 35... | FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY THE INDEX OF COINCIDENCE IS A USEFUL CLUE NEVER | homophonic | homophonic | null | {} | hard | en | 133 | 133 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
gronsfeld-v3-0578 | CPLRNPPAETDALKKAWTJNBBHTYBBHXXUMMZYQWZKXDVZZMXCZGSMAVLDNIYYGNNVXJHWBXGRZAN | CPLRNPPAETDALKKAWTJNBBHTYBBHXXUMMZYQWZKXDVZZMXCZGSMAVLDNIYYGNNVXJHWBXGRZAN | THE LIGHT YOU SEE FROM DISTANT STARS LEFT THOSE SUNS THOUSANDS OF YEARS BEFORE YOUR BIRTH | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "98765"
} | intermediate | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
polybius-v3-0077 | 23 45 32 24 33 44 34 42 23 45 32 11 33 24 33 44 15 31 31 24 22 15 33 13 15 22 11 44 23 15 42 24 33 22 42 15 31 24 15 43 34 33 35 15 42 43 34 33 11 31 13 34 33 44 11 13 44 11 33 14 23 45 32 11 33 43 34 45 42 13 15 43 24 33 44 23 15 21 24 15 31 14 | 23 45 32 24 33 44 34 42 23 45 32 11 33 24 33 44 15 31 31 24 22 15 33 13 15 22 11 44 23 15 42 24 33 22 42 15 31 24 15 43 34 33 35 15 42 43 34 33 11 31 13 34 33 44 11 13 44 11 33 14 23 45 32 11 33 43 34 45 42 13 15 43 24 33 44 23 15 21 24 15 31 14 | HUMINT OR HUMAN INTELLIGENCE GATHERING RELIES ON PERSONAL CONTACT AND HUMAN SOURCES IN THE FIELD | polybius | polybius | substitution | {
"type": "none",
"value": null
} | beginner | en | 164 | 245 | cipher_museum | 2.0 | public | null | null |
affine-436 | RJQO WJPQELWTJVJQMR | RJQO WJPQELWTJVJQMR | SEND REINFORCEMENTS | affine | affine | substitution | {
"a": 21,
"b": 3
} | beginner | en | 18 | 19 | cipher_museum | 0.2 | public | null | null |
cda-0004408 | TSRIIIFLPTONCACUDNNNTHEUSGDELATAGXNTNCNECBDDEIELXCLCEAXXLRLUEOAFETESOIFIEANSXXOSSASCMRPCTAESOAMSBBXXEUIOUITMTIVTAHNSDFTWXXRIYEECEKEE | TSRIIIFLPTONCACUDNNNTHEUSGDELATAGXNTNCNECBDDEIELXCLCEAXXLRLUEOAFETESOIFIEANSXXOSSASCMRPCTAESOAMSBBXXEUIOUITMTIVTAHNSDFTWXXRIYEECEKEE | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS THE INDEX OF COINCIDENCE IS A USEFUL CLUE A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG | stager_route | stager_route | null | {
"cols": 12
} | hard | en | 132 | 132 | synthetic_educational | null | null | [
"column_count_search",
"route_pattern_search"
] | Route (Stager) cipher: write into rectangle, read via alternating column route. |
autokey-v3-0341 | YYIVHROHHXJEUGQOFANX | YYIVHROHHXJEUGQOFANX | THE REDCOATS ARE COMING | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
bazeries-290 | MTYEQTVOJQOJPAMDTQAUMJKFAYIGTQYEQJQYQTQPDPAQAMJYOAEQTYR | MTYEQTVOJQOJPAMDTQAUMJKFAYIGTQYEQJQYQTQPDPAQAMJYOAEQTYR | THE ART OF WAR IS OF VITAL IMPORTANCE TO THE STATE IT IS LIFE OR DEATH | bazeries | bazeries | transposition | {
"type": "integer",
"value": 31
} | advanced | en | 55 | 55 | cipher_museum | 0.2 | public | null | null |
cda-0020742 | ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a23⟩ ⟨a19⟩ ⟨w32⟩ ⟨w20⟩ ⟨a17⟩ ⟨w04⟩ ⟨w08⟩ ⟨a07⟩ ⟨a25⟩ ⟨w20⟩ ⟨w22⟩ ⟨a25⟩ ⟨w28⟩ ⟨w22⟩ ⟨w20⟩ ⟨w22⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w32⟩ ⟨a07⟩ ⟨a17⟩ ⟨w20⟩ ⟨a37⟩ ⟨w10⟩ ⟨a23⟩ ⟨w14⟩ ⟨w10⟩ ⟨w32⟩ ⟨a07⟩ ⟨w14⟩ ⟨w32⟩ ⟨a17⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨w20⟩ ⟨a25⟩ ⟨w10⟩ ⟨w20⟩ ⟨w22⟩ ⟨a25⟩ ⟨w32⟩ ⟨w04⟩ ⟨w08⟩ ⟨a25⟩ ⟨w20⟩ ⟨w38⟩ ⟨w20⟩ ⟨w40⟩ ⟨a... | ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a23⟩ ⟨a19⟩ ⟨w32⟩ ⟨w20⟩ ⟨a17⟩ ⟨w04⟩ ⟨w08⟩ ⟨a07⟩ ⟨a25⟩ ⟨w20⟩ ⟨w22⟩ ⟨a25⟩ ⟨w28⟩ ⟨w22⟩ ⟨w20⟩ ⟨w22⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w32⟩ ⟨a07⟩ ⟨a17⟩ ⟨w20⟩ ⟨a37⟩ ⟨w10⟩ ⟨a23⟩ ⟨w14⟩ ⟨w10⟩ ⟨w32⟩ ⟨a07⟩ ⟨w14⟩ ⟨w32⟩ ⟨a17⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨w20⟩ ⟨a25⟩ ⟨w10⟩ ⟨w20⟩ ⟨w22⟩ ⟨a25⟩ ⟨w32⟩ ⟨w04⟩ ⟨w08⟩ ⟨a25⟩ ⟨w20⟩ ⟨w38⟩ ⟨w20⟩ ⟨w40⟩ ⟨a... | THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY | babington | babington | null | {} | hard | en | 156 | 156 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
beaufort-de-052 | YEIMNVELZXHHLXELZXHDXMKATYWCXWYGTCTBBGEHBTVUUWPM | YEIMNVELZXHHLXELZXHDXMKATYWCXWYGTCTBBGEHBTVUUWPM | DAS IST NICHT NUR NICHT RICHTIG ES IST NICHT EINMAL FALSCH | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "BEAUFORT"
} | intermediate | de | 48 | 48 | cipher_museum | 0.2 | public | null | null |
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