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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
stager-route-v2-0129 | HEXOLXXDTXXHEXXLIXXN | HEXOLXXDTXXHEXXLIXXN | HOLD THE LINE | stager_route | stager_route | transposition | {
"type": "integer",
"value": 10
} | expert | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
chaocipher-143 | OWJFUYMONXAYO | OWJFUYMONXAYO | THE KING IS DEAD | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 13 | 13 | cipher_museum | 0.2 | public | null | null |
bifid-v2-0052 | BIQAQNBTLLXLRTGBGPTOCNMXPKSMTSTPSRCPUUDNDTWNDYPRIWTZRWRPWLUHESHISOWUUUXW | BIQAQNBTLLXLRTGBGPTOCNMXPKSMTSTPSRCPUUDNDTWNDYPRIWTZRWRPWLUHESHISOWUUUXW | GENERAL GRANT HAS TAKEN VICKSBURG THE GREAT RIVER IS NOW OPEN FROM ITS SOURCE TO THE SEA | bifid | bifid | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
geheimschreiber-v2-0172 | GJOZXRWDZELQCUYKZMZTIRFLUZLQCVFCAQLYTOPOENXDMRGETWGTZNBOYQJWGSVY | GJOZXRWDZELQCUYKZMZTIRFLUZLQCVFCAQLYTOPOENXDMRGETWGTZNBOYQJWGSVY | WHAT IS IN A NAME THAT WHICH WE CALL A ROSE BY ANY OTHER NAME WOULD SMELL AS SWEET | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "KAISER"
} | expert | en | 64 | 64 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v3-0273 | TCO RDTTIO LN BOTTYSRUQB IDSTOG TCQOO GDYS DKG ALST LVOQ NENTY TCLUSDKG ADSUDITEOS TLTDI | TCO RDTTIO LN BOTTYSRUQB IDSTOG TCQOO GDYS DKG ALST LVOQ NENTY TCLUSDKG ADSUDITEOS TLTDI | THE BATTLE OF GETTYSBURG LASTED THREE DAYS AND COST OVER FIFTY THOUSAND CASUALTIES TOTAL | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "DRAGON"
} | beginner | en | 75 | 88 | cipher_museum | 2.0 | public | null | null |
adfgx-v2-0641 | AGGFDDGAFGAGDFAFADGAFAFFAADFAAXGGXGXGFGFAAFGXDFFXGGAFAXAGADFAFAXFADGADGDAGGADDDDAXAXDGAAXDXXDGXXDGGAXGAAXFXGAXGGAXGAGAGDAADAGAXADGDXAA | AGGFDDGAFGAGDFAFADGAFAFFAADFAAXGGXGXGFGFAAFGXDFFXGGAFAXAGADFAFAXFADGADGDAGGADDDDAXAXDGAAXDXXDGXXDGGAXGAAXFXGAXGGAXGAGAGDAADAGAXADGDXAA | I KNOW NOT WHAT COURSE OTHERS MAY TAKE BUT AS FOR ME GIVE ME LIBERTY OR GIVE ME DEATH | adfgx | adfgx | fractionation | {
"polybius": "KAISER",
"columnar": "BERLIN"
} | advanced | en | 134 | 134 | cipher_museum | 2.0 | public | null | null |
cda-0021751 | GJHEGSKNOUAQFEHLYAMJSDAIIKHEFVLXYIPVCAQGKMXSXVGUGZPOPUCIEIVCYMASVTYVFWFSLBAYKMDRCBXUKBWKGGSNUMPPWNWVLODLONYWVUHXYGXTWKNVFRHJEELHYOWYJZUVLXIBXYFGWAVBNMKWTUUXVPKKWR | GJHEGSKNOUAQFEHLYAMJSDAIIKHEFVLXYIPVCAQGKMXSXVGUGZPOPUCIEIVCYMASVTYVFWFSLBAYKMDRCBXUKBWKGGSNUMPPWNWVLODLONYWVUHXYGXTWKNVFRHJEELHYOWYJZUVLXIBXYFGWAVBNMKWTUUXVPKKWR | A STRONG CLAIM NEEDS STRONG EVIDENCE THE ARCHITECTURE SHOULD MAKE MISUSE HARDER SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY | running_key | running_key | null | {} | hard | en | 162 | 162 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
confederate-vigenere-v2-0698 | WTGCKFXRXZBJOHVLVOIPGKJUZFXOPGIKIUCRNMGQGEUEJWTGCKFXRXZBJOHFUTKHIMOJTUDUIOWC | WTGCKFXRXZBJOHVLVOIPGKJUZFXOPGIKIUCRNMGQGEUEJWTGCKFXRXZBJOHFUTKHIMOJTUDUIOWC | BLESSED ARE THE PURE IN HEART FOR THEY SHALL SEE GOD AND BLESSED ARE THE PEACEMAKERS AMONG US | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "VICKSBURG"
} | intermediate | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
cda-0010176 | CPV USBW GVIJV JBNPVU AUBCVD CVOC BI S MBHMSH NSCCVUI | CPV USBW GVIJV JBNPVU AUBCVD CVOC BI S MBHMSH NSCCVUI | THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN | monoalphabetic | monoalphabetic | null | {
"alphabet": "SKJQVGHPBFTWRIXNYUDCZLAOEM"
} | medium | en | 44 | 44 | synthetic_educational | null | null | [] | |
caesar-la-023 | PNECR QVRZ DHNZ ZVAVZHZ PERQHYN CBFGREB | PNECR QVRZ DHNZ ZVAVZHZ PERQHYN CBFGREB | CARPE DIEM QUAM MINIMUM CREDULA POSTERO | caesar | caesar | substitution | {
"type": "shift",
"value": 13
} | beginner | la | 34 | 39 | cipher_museum | 0.2 | public | null | null |
rail-fence-v3-0497 | THPTHTEYAOHSENICSTERMINNSSOAOPTEETTELEEGDEHYEELAVRERBDLEICROUDICTESFREGNASIEIELD | THPTHTEYAOHSENICSTERMINNSSOAOPTEETTELEEGDEHYEELAVRERBDLEICROUDICTESFREGNASIEIELD | THE MOLE BURIED DEEP IN THE INTELLIGENCE AGENCY PASSED VITAL SECRETS TO THE OTHER SIDE FOR YEARS | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 11
} | intermediate | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
hill-v3-0519 | GGYZKQRXDWBXCYBGPGKJCAXZLIVSJEZUCERAYFDQUSENRPCYRNXDVNHHXJXZLICEMWWPYKMLVMZHHDGCMWXDBXWVXZRPIIZYOVNNHDGIMCNNJSVYSRXCWUZHECFIGDLIOYBZHDOYSRZLPKAGTKUURPVEIYTYRTFUFEKIRPQANNMWTAKJSIEIFE | GGYZKQRXDWBXCYBGPGKJCAXZLIVSJEZUCERAYFDQUSENRPCYRNXDVNHHXJXZLICEMWWPYKMLVMZHHDGCMWXDBXWVXZRPIIZYOVNNHDGIMCNNJSVYSRXCWUZHECFIGDLIOYBZHDOYSRZLPKAGTKUURPVEIYTYRTFUFEKIRPQANNMWTAKJSIEIFE | WILLIAM FRIEDMAN WHO BROKE THE JAPANESE PURPLE CIPHER MACHINE BEFORE THE SECOND WORLD WAR ALSO COINED THE TERM CRYPTANALYSIS AND SPENT HIS CAREER AT THE SIGNALS INTELLIGENCE SERVICE BUILDING AMERICAN CODEBREAKING | hill | hill | polygraphic | {
"a": 11,
"b": 3,
"c": 2,
"d": 5
} | advanced | en | 182 | 182 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-v3-0015 | SIIAJQBYGZNPKV | SIIAJQBYGZNPKV | THE SIEGE BEGINS | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "4,2,6,1,3,5"
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
four-square-v2-0388 | TAOPUKGMTROOSPEQONSSLIGRSX | TAOPUKGMTROOSPEQONSSLIGRSX | SICUT PATRIBUS SIT DEUS NOBIS | four_square | four_square | polygraphic | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v3-0237 | MLSESDUGJQWLQQYUGJVPUVC | MLSESDUGJQWLQQYUGJVPUVC | THE REDCOATS ARE COMING | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 23 | 23 | cipher_museum | 2.0 | public | null | null |
hill-v2-0622 | HDJAIWPKZZVRTFBXXDREWVRCLFZHDYLPIARQXCRNWVVNZLOMQWIJDFPHWVSICCPHNNKQDSWVRPNNMXLIWVJXMXPGCEDBWQSRLIJXMIUDNNWISESIRCWEYZBXIYWNOYDSLVIOIWTI | HDJAIWPKZZVRTFBXXDREWVRCLFZHDYLPIARQXCRNWVVNZLOMQWIJDFPHWVSICCPHNNKQDSWVRPNNMXLIWVJXMXPGCEDBWQSRLIJXMIUDNNWISESIRCWEYZBXIYWNOYDSLVIOIWTI | 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 | hill | hill | polygraphic | {
"a": 11,
"b": 3,
"c": 2,
"d": 5
} | advanced | en | 136 | 136 | cipher_museum | 2.0 | public | null | null |
nomenclator-058 | 23 08 05 20 08 05 18 20 08 05 18 05 06 15 18 05 25 05 05 01 20 15 18 04 18 09 14 11 15 18 23 08 01 20 19 15 05 22 05 18 25 05 04 15 04 15 01 12 12 63 60 07 12 15 18 25 62 07 15 04 06 15 18 60 05 01 18 20 08 09 19 60 12 15 18 04 19 61 60 06 21 12 12 14 05 19 19 20 08 05 18 05 15 06 60 23 15 18 12 04 61 20 08 05 25 20 08... | 23 08 05 20 08 05 18 20 08 05 18 05 06 15 18 05 25 05 05 01 20 15 18 04 18 09 14 11 15 18 23 08 01 20 19 15 05 22 05 18 25 05 04 15 04 15 01 12 12 63 60 07 12 15 18 25 62 07 15 04 06 15 18 60 05 01 18 20 08 09 19 60 12 15 18 04 19 61 60 06 21 12 12 14 05 19 19 20 08 05 18 05 15 06 60 23 15 18 12 04 61 20 08 05 25 20 08... | 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 | nomenclator | nomenclator | nomenclator | {
"type": "none",
"value": null
} | expert | en | 242 | 362 | cipher_museum | 0.2 | public | null | null |
bifid-v2-0613 | BTADOPGGSGANEICHZ | BTADOPGGSGANEICHZ | COURAGE IN DARKNESS | bifid | bifid | fractionation | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
cda-0021046 | 66 80 68 29 61 65 69 61 50 66 50 69 29 52 50 65 36 82 80 61 80 82 68 80 80 68 29 25 82 57 82 66 66 82 80 61 89 50 66 36 69 59 66 61 59 20 61 66 50 66 59 66 50 69 29 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 | 66 80 68 29 61 65 69 61 50 66 50 69 29 52 50 65 36 82 80 61 80 82 68 80 80 68 29 25 82 57 82 66 66 82 80 61 89 50 66 36 69 59 66 61 59 20 61 66 50 66 59 66 50 69 29 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 | TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER | wallis_cipher | wallis_cipher | null | {} | hard | en | 98 | 98 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
adfgx-264 | ADFFGADAGADGAXAAXXGAAGXXDXXDAADADFAFDDFDDDFDDDDDGFFXXDDGDGFADDGDGFXDXFDFFGFXFXADAFFFAFAFDAFFXGDD | ADFFGADAGADGAXAAXXGAAGXXDXXDAADADFAFDDFDDDFDDDDDGFFXXDDGDGFADDGDGFXDXFDFFGFXFXADAFFFAFAFDAFFXGDD | WE SHALL FIGHT ON THE BEACHES AND WE SHALL NEVER SURRENDER | adfgx | adfgx | fractionation | {
"polybius": "KEYWORD",
"columnar": "TRAFIC"
} | advanced | en | 96 | 96 | cipher_museum | 0.2 | public | null | null |
m94-v3-0251 | NOYEBXXWFWOSNSCDMHZJQNNCKYFEANJHPLKGBFUSNJDLIZGDCPIYEQGTUGNDACQJSXCMVLQCDHRPBQXYJ | NOYEBXXWFWOSNSCDMHZJQNNCKYFEANJHPLKGBFUSNJDLIZGDCPIYEQGTUGNDACQJSXCMVLQCDHRPBQXYJ | DARWIN OBSERVED THAT SPECIES EVOLVE THROUGH NATURAL SELECTION OVER VAST SPANS OF GEOLOGIC TIME | m94 | m94 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
lorenz-v2-0103 | WETHEREFORETHEREPRESENTAXIVESOFTGEUNIXEDSTATESOFAMERIGAINGENERALCONGRESSASSFMBLEDALPEALIJGTOTHESUPREMEJUDGEOFTHAWORLDFPRTHERECTITUDEOFOURINXANTIONSDOSOLEMNLYPUBLJSH | WETHEREFORETHEREPRESENTAXIVESOFTGEUNIXEDSTATESOFAMERIGAINGENERALCONGRESSASSFMBLEDALPEALIJGTOTHESUPREMEJUDGEOFTHAWORLDFPRTHERECTITUDEOFOURINXANTIONSDOSOLEMNLYPUBLJSH | 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 | lorenz | lorenz | machine | {
"type": "seed",
"value": "TUNNY"
} | expert | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
scytale-v3-0369 | TIEEEAELHTWOTYFRNDSGIXIYOROKGTEOXNANOFNEONNXFNDNHOCEEAXIDTTUWAARNXNBHIMLLCAEX | TIEEEAELHTWOTYFRNDSGIXIYOROKGTEOXNANOFNEONNXFNDNHOCEEAXIDTTUWAARNXNBHIMLLCAEX | TO INFINITY AND BEYOND THE FRONTIER OF HUMAN KNOWLEDGE CALLS TO EACH GENERATION ANEW | scytale | scytale | transposition | {
"type": "integer",
"value": 11
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
chinese-telegraph-061 | 1427 2836 2836 1427 1571 2082 1427 2836 1634 1427 3087 2271 | 1427 2836 2836 1427 1571 2082 1427 2836 1634 1427 3087 2271 | ATTACK AT DAWN | chinese_telegraph | chinese_telegraph | codebook | {
"type": "additive",
"value": "31415"
} | expert | en | 48 | 59 | cipher_museum | 0.2 | public | null | null |
cda-0012923 | 44 23 15 21 34 45 42 43 41 45 11 42 15 13 24 35 23 15 42 45 43 15 43 44 52 34 25 15 54 52 34 42 14 35 34 31 54 12 24 45 43 43 41 45 11 42 15 43 | 44 23 15 21 34 45 42 43 41 45 11 42 15 13 24 35 23 15 42 45 43 15 43 44 52 34 25 15 54 52 34 42 14 35 34 31 54 12 24 45 43 43 41 45 11 42 15 43 | THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES | polybius | polybius | null | {} | medium | en | 48 | 48 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
great-cipher-v3-0256 | 177 105 146 104 176 182 140 141 142 148 140 111 121 134 121 152 142 158 178 120 140 119 168 152 114 160 118 176 156 170 141 120 178 149 103 133 104 140 141 111 147 176 181 178 176 175 125 170 181 138 141 118 142 158 125 141 119 158 169 181 175 180 108 118 179 112 140 101 140 156 151 180 | 177 105 146 104 176 182 140 141 142 148 140 111 121 134 121 152 142 158 178 120 140 119 168 152 114 160 118 176 156 170 141 120 178 149 103 133 104 140 141 111 147 176 181 178 176 175 125 170 181 138 141 118 142 158 125 141 119 158 169 181 175 180 108 118 179 112 140 101 140 156 151 180 | CALL ME ISHMAEL SOME YEARS AGO NEVER MIND HOW LONG PRECISELY I THOUGHT I WOULD SAIL ABOUT AND SEE THE OCEAN | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "FRANCE"
} | expert | en | 216 | 287 | cipher_museum | 2.0 | public | null | null |
playfair-v2-0647 | ULDGPNETCKXTGAOKFNETUKDHGQQUUHQIGAHFGBULGFGTAFWUVEVNNFGVOBTCCOBIDXTCTGHYDUFNBS | ULDGPNETCKXTGAOKFNETUKDHGQQUUHQIGAHFGBULGFGTAFWUVEVNNFGVOBTCCOBIDXTCTGHYDUFNBS | THE LORD IS MY SHEPHERD I SHALL NOT WANT HE MAKETH ME LIE DOWN IN GREEN PASTURES BY STILL WATERS | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
cda-0003737 | XKBNAEJKUN NERMNWLN LXVNB KNOXAN LXWORMNWLN YJCCNAW FXAMB QNUY KANJT VXWXJUYQJKNCRL BDKBCRCDCRXW BNLDARCH LUJRVB BQXDUM KN CNBCNM DWMNA BLADCRWH RWMNG XO LXRWLRMNWLN VNJBDANB UNCCNA OANZDNWLH MRBCARKDCRXW | XKBNAEJKUN NERMNWLN LXVNB KNOXAN LXWORMNWLN YJCCNAW FXAMB QNUY KANJT VXWXJUYQJKNCRL BDKBCRCDCRXW BNLDARCH LUJRVB BQXDUM KN CNBCNM DWMNA BLADCRWH RWMNG XO LXRWLRMNWLN VNJBDANB UNCCNA OANZDNWLH MRBCARKDCRXW | OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | gronsfeld | gronsfeld | null | {
"key": "99999"
} | hard | en | 180 | 180 | synthetic_educational | null | null | [
"kasiski_examination",
"digit_key_brute_force"
] | Gronsfeld: Vigenère variant with a digit-only key (0–9 per position). |
cardano-autokey-033 | VALSBYJRAPVTCALHVZXHTJERZAXJERZBLWPQ | VALSBYJRAPVTCALHVZXHTJERZAXJERZBLWPQ | THE ONLY THING WE HAVE TO FEAR IS FEAR ITSELF | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "CARDANO"
} | advanced | en | 36 | 36 | cipher_museum | 0.2 | public | null | null |
cda-0016496 | THEPL AYFAI RCIPH ERENC RYPTS PAIRS OFLET TERSS IMULT ANEOU SLYCZ | THEPL AYFAI RCIPH ERENC RYPTS PAIRS OFLET TERSS IMULT ANEOU SLYCZ | THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY | commercial_code | commercial_code | null | {} | medium | en | 55 | 55 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
diana-v2-0406 | JUHNRNUDVYEAJLHQJ | JUHNRNUDVYEAJLHQJ | COURAGE IN DARKNESS | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "LIBERTY"
} | intermediate | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
cda-0008675 | EBUDI PCNVE BAMVA BOLEU PCVNM MONEH CNVGB IQMEK VMRHP ZISRK EJYVC ZATKS BJVEI SMNOO IVKCG VSWBF CPMLX NVDTJ WHRGX TZWEQ SWRLA CUWHY UOIIW BTVIY WYBCV IDWON IVQWG CQMND QSZPG RBCZH XJYCO IPNGC EIMBI VB | EBUDI PCNVE BAMVA BOLEU PCVNM MONEH CNVGB IQMEK VMRHP ZISRK EJYVC ZATKS BJVEI SMNOO IVKCG VSWBF CPMLX NVDTJ WHRGX TZWEQ SWRLA CUWHY UOIIW BTVIY WYBCV IDWON IVQWG CQMND QSZPG RBCZH XJYCO IPNGC EIMBI VB | A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG THE INDEX OF COINCIDENCE IS A USEFUL CLUE DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL | beaufort | beaufort | null | {
"key": "ENIGMA"
} | hard | en | 167 | 167 | synthetic_educational | null | null | [] | |
confederate-vigenere-v2-0083 | FHRRYMUXSWXIOGYXQBWVFEEPHPNBKZXAAELEFWXYQWVNSXGWIWQNQKAEYTMEETNNSJGXWRZDGJYISMW | FHRRYMUXSWXIOGYXQBWVFEEPHPNBKZXAAELEFWXYQWVNSXGWIWQNQKAEYTMEETNNSJGXWRZDGJYISMW | THE PRICE OF LIBERTY IS ETERNAL VIGILANCE AND THE WILL TO DEFEND IT AGAINST ALL FOES AND THREATS | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "MANCHESTER"
} | intermediate | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
cda-0003022 | LLGERWBZOSEPIESVEQIAVSIGLGEJXRDLVHIVIZVDFJQTTIBZMEVMMAXYXHBMXJXLZXWVNLDIKIUWBIJCSUXJFEWNEPWEKOLKQZY | LLGERWBZOSEPIESVEQIAVSIGLGEJXRDLVHIVIZVDFJQTTIBZMEVMMAXYXHBMXJXLZXWVNLDIKIUWBIJCSUXJFEWNEPWEKOLKQZY | THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS | autokey | autokey | null | {
"primer": "SECURE"
} | hard | en | 99 | 99 | synthetic_educational | null | null | [
"running_key_analysis",
"index_of_coincidence"
] | Autokey: Vigenère where the plaintext extends the key — harder to Kasiski-attack. |
kryptos-v2-0231 | UUTHYXLCMFLHKNBUXTRKSWDXNSILVKHSUKNMMBSPJPKMEXDIBXBQYGVHMFELOVGXGWXMTEVZEQDUOVGWRYFG | UUTHYXLCMFLHKNBUXTRKSWDXNSILVKHSUKNMMBSPJPKMEXDIBXBQYGVHMFELOVGXGWXMTEVZEQDUOVGWRYFG | THE REGIMENT WILL HOLD ITS POSITION UNTIL REINFORCEMENTS ARRIVE FROM THE EASTERN COMMAND POST HERE | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "LANGLEY"
} | advanced | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
cda-0020389 | 11 31 11 33 44 45 42 24 33 22 12 42 34 25 15 15 33 24 22 32 11 52 24 44 23 13 42 24 12 43 11 33 14 44 23 15 12 34 32 12 15 32 11 13 23 24 33 15 21 42 15 41 45 15 33 13 54 11 33 11 31 54 43 24 43 13 11 33 42 15 51 15 11 31 52 15 11 25 13 24 35 23 15 42 43 35 45 12 31 24 13 24 33 21 42 11 43 44 42 45 13 44 45 42 15 14 15... | 11 31 11 33 44 45 42 24 33 22 12 42 34 25 15 15 33 24 22 32 11 52 24 44 23 13 42 24 12 43 11 33 14 44 23 15 12 34 32 12 15 32 11 13 23 24 33 15 21 42 15 41 45 15 33 13 54 11 33 11 31 54 43 24 43 13 11 33 42 15 51 15 11 31 52 15 11 25 13 24 35 23 15 42 43 35 45 12 31 24 13 24 33 21 42 11 43 44 42 45 13 44 45 42 15 14 15... | ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH | polybius | polybius | null | {} | hard | en | 185 | 185 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
cda-0013811 | HYFJ KMOC XEOA FZTW VFVG CXFI NPEC FTXK XFIQ ZJXI RVPA AYUE MTAH GJTA MLNK HHTM SLWV JHEH GATL QYEW IJBU NVMH ZVZX LVWE BFWJ ZIVD WJXN XAHR FCCK IIKO RJXI PFPV KHVT HFRH KYNS EEAW OIMX GKAI OSKM YOGL OZGV IHPK GEER YRGZ JWMX QJ | HYFJ KMOC XEOA FZTW VFVG CXFI NPEC FTXK XFIQ ZJXI RVPA AYUE MTAH GJTA MLNK HHTM SLWV JHEH GATL QYEW IJBU NVMH ZVZX LVWE BFWJ ZIVD WJXN XAHR FCCK IIKO RJXI PFPV KHVT HFRH KYNS EEAW OIMX GKAI OSKM YOGL OZGV IHPK GEER YRGZ JWMX QJ | PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS | running_key | running_key | null | {} | hard | en | 182 | 182 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
four-square-v3-0220 | LTVSQDFLYAODKQNQMMSUSSGPUNBLFX | LTVSQDFLYAODKQNQMMSUSSGPUNBLFX | TAXATION WITHOUT REPRESENTATION | four_square | four_square | polygraphic | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 30 | 30 | cipher_museum | 2.0 | public | null | null |
cda-0020987 | ... ..... ... .... ... . ..... .... . . ... . ... ..... .. ... . . . .. . ..... .... .... .. .... . ... . ... .. .... ... ..... .. ... . ..... .... .. .... ... .... ..... .... ... . ..... ... .. .... ..... ... . .... .... .. .... ... ..... ... . . ..... . . ... . ... ..... .. ... . .... | ... ..... ... .... ... . ..... .... . . ... . ... ..... .. ... . . . .. . ..... .... .... .. .... . ... . ... .. .... ... ..... .. ... . ..... .... .. .... ... .... ..... .... ... . ..... ... .. .... ..... ... . .... .... .. .... ... ..... ... . . ..... . . ... . ... ..... .. ... . .... | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER | tap_code | tap_code | null | {} | hard | en | 94 | 94 | synthetic_educational | null | null | [
"dot_count_decode",
"grid_position_search"
] | Tap code: letters encoded as dot-groups representing row and column in 5×5 grid. |
geez-monastic-220 | BEZOSDDUQMOKGYKOEAESVOEZSYCBEZOSDDYEWEPZFPPEYCEP | BEZOSDDUQMOKGYKOEAESVOEZSYCBEZOSDDYEWEPZFPPEYCEP | WE SHALL FIGHT ON THE BEACHES AND WE SHALL NEVER SURRENDER | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 48 | 48 | cipher_museum | 0.2 | public | null | null |
kryha-v3-0016 | ECIRRTWSSQUCVQVCG | ECIRRTWSSQUCVQVCG | ARCHERS TO THE WALLS | kryha | kryha | machine | {
"type": "keyword",
"value": "MUNICH"
} | expert | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
chinese-telegraph-v2-0342 | 4934 4154 5397 5963 5329 5645 4427 4427 4998 5060 4489 5488 4298 5060 5563 5488 5814 4154 5488 4216 4427 4614 4427 4154 4361 4427 4361 4154 4489 5563 4427 5397 4614 4427 5397 4298 4680 5166 4614 4427 5397 4871 4427 5563 5563 4427 5397 5488 5814 4427 5397 4427 4361 4427 4298 5060 4361 4427 4361 4216 5963 5563 4614 5060 ... | 4934 4154 5397 5963 5329 5645 4427 4427 4998 5060 4489 5488 4298 5060 5563 5488 5814 4154 5488 4216 4427 4614 4427 4154 4361 4427 4361 4154 4489 5563 4427 5397 4614 4427 5397 4298 4680 5166 4614 4427 5397 4871 4427 5563 5563 4427 5397 5488 5814 4427 5397 4427 4361 4427 4298 5060 4361 4427 4361 4216 5963 5563 4614 5060 ... | MARY QUEEN OF SCOTS WAS BEHEADED AFTER HER CIPHER LETTERS WERE DECODED BY THOMAS PHELIPPES | chinese_telegraph | chinese_telegraph | codebook | {
"type": "additive",
"value": "14142"
} | expert | en | 304 | 379 | cipher_museum | 2.0 | public | null | null |
adfgx-v2-0568 | DFDGGXAGGDADFDAXAAAAFGGGDAGDXXXAAGDGXADAXGAAXGDDAFDDAAXXADDADFGGGGAXXDDFGAGDXDGDFGAAFDXGXAFXDFADDDXXGAAXAGADGXAXGAFDFGFDXGFFXGGDDGAXDFAAFFAAXAGDAAGGFDFDDGGAFDAF | DFDGGXAGGDADFDAXAAAAFGGGDAGDXXXAAGDGXADAXGAAXGDDAFDDAAXXADDADFGGGGAXXDDFGAGDXDGDFGAAFDXGXAFXDFADDDXXGAAXAGADGXAXGAFDFGFDXGFFXGGDDGAXDFAAFFAAXAGDAAGGFDFDDGGAFDAF | THE AMBASSADOR HAS RECEIVED OUR MOST URGENT DISPATCHES AND AWAITS INSTRUCTIONS FROM LONDON HQ | adfgx | adfgx | fractionation | {
"polybius": "WISDOM",
"columnar": "COURAGE"
} | advanced | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
fialka-v2-0424 | VIKKCKJQDKNEULZZIUPUEYJXLMNKDVNDVICJFQKXUVMJLQSDDKFAGYQDUFWMZBSD | VIKKCKJQDKNEULZZIUPUEYJXLMNKDVNDVICJFQKXUVMJLQSDDKFAGYQDUFWMZBSD | WHAT IS IN A NAME THAT WHICH WE CALL A ROSE BY ANY OTHER NAME WOULD SMELL AS SWEET | fialka | fialka | machine | {
"type": "seed",
"value": "SPUTNIK"
} | expert | en | 64 | 64 | cipher_museum | 2.0 | public | null | null |
cda-0013083 | 14 34 33 34 44 13 34 33 21 45 43 15 34 12 21 45 43 13 11 44 24 34 33 52 24 44 23 15 33 13 42 54 35 44 24 34 33 11 33 11 21 21 24 33 15 13 24 35 23 15 42 11 35 35 31 24 15 43 11 31 24 33 15 11 42 21 45 33 13 44 24 34 33 44 34 15 11 13 23 31 15 44 44 15 42 44 52 34 43 41 45 11 42 15 13 24 35 23 15 42 15 33 13 42 54 35 44... | 14 34 33 34 44 13 34 33 21 45 43 15 34 12 21 45 43 13 11 44 24 34 33 52 24 44 23 15 33 13 42 54 35 44 24 34 33 11 33 11 21 21 24 33 15 13 24 35 23 15 42 11 35 35 31 24 15 43 11 31 24 33 15 11 42 21 45 33 13 44 24 34 33 44 34 15 11 13 23 31 15 44 44 15 42 44 52 34 43 41 45 11 42 15 13 24 35 23 15 42 15 33 13 42 54 35 44... | DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | polybius | polybius | null | {} | hard | en | 175 | 175 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
four-square-v3-0156 | HLEDEVPCLOFHDDLCGTRENKBHRDELFBTYBNGTFRKEVDLOBBBUALPCIGSREPBUPTLOEIPIEGFXBPCLHX | HLEDEVPCLOFHDDLCGTRENKBHRDELFBTYBNGTFRKEVDLOBBBUALPCIGSREPBUPTLOEIPIEGFXBPCLHX | ON D DAY THE ALLIED FORCES LANDED ON FIVE NORMANDY BEACHES IN THE GREATEST SEABORNE INVASION | four_square | four_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
kryha-v2-0149 | MACIUKIMXUMUJDYIMR | MACIUKIMXUMUJDYIMR | LOOSE LIPS SINK SHIPS | kryha | kryha | machine | {
"type": "keyword",
"value": "VIENNA"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
rot13-de-004 | SERVURVG TYRVPUURVG OEHQREYVPUXRVG | SERVURVG TYRVPUURVG OEHQREYVPUXRVG | FREIHEIT GLEICHHEIT BRUDERLICHKEIT | rot13 | rot13 | substitution | {
"type": "none",
"value": null
} | beginner | de | 32 | 34 | cipher_museum | 0.2 | public | null | null |
cda-0012267 | THEF RIED MXNT ESZU SEST HEIN DEXO FCOI NCID ENCE TOES ZIMA TXKE YLEN GTHO BSER XABL EZVI DENC ECOZ ESBE FORE CZNF IDZN CEFR IEDM ANES TIMA TEDK EYLE NGTH XROM STAT ISTI CSFX EQUE ZCYA NXLY SIZC ANRE VEAL XEAK CIPH ERS | THEF RIED MXNT ESZU SEST HEIN DEXO FCOI NCID ENCE TOES ZIMA TXKE YLEN GTHO BSER XABL EZVI DENC ECOZ ESBE FORE CZNF IDZN CEFR IEDM ANES TIMA TEDK EYLE NGTH XROM STAT ISTI CSFX EQUE ZCYA NXLY SIZC ANRE VEAL XEAK CIPH ERS | THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | commercial_code | commercial_code | null | {} | hard | en | 175 | 175 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
rot13-v2-0109 | JR GURERSBER GUR ERCERFRAGNGVIRF BS GUR HAVGRQ FGNGRF BS NZREVPN VA TRARENY PBATERFF NFFRZOYRQ NCCRNYVAT GB GUR FHCERZR WHQTR BS GUR JBEYQ SBE GUR ERPGVGHQR BS BHE VAGRAGVBAF QB FBYRZAYL CHOYVFU | JR GURERSBER GUR ERCERFRAGNGVIRF BS GUR HAVGRQ FGNGRF BS NZREVPN VA TRARENY PBATERFF NFFRZOYRQ NCCRNYVAT GB GUR FHCERZR WHQTR BS GUR JBEYQ SBE GUR ERPGVGHQR BS BHE VAGRAGVBAF QB FBYRZAYL CHOYVFU | 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 | rot13 | rot13 | substitution | {
"type": "none",
"value": null
} | beginner | en | 164 | 194 | cipher_museum | 2.0 | public | null | null |
vic-v3-0057 | 910802838209195192908080818918578390914869190914899028081919101908090928690910192904867901819580489905808118980951928958389910 | 910802838209195192908080818918578390914869190914899028081919101908090928690910192904867901819580489905808118980951928958389910 | THE LIGHT YOU SEE FROM DISTANT STARS LEFT THOSE SUNS THOUSANDS OF YEARS BEFORE YOUR BIRTH | vic | vic | substitution | {
"type": "keyword",
"value": "HOLLOW"
} | advanced | en | 126 | 126 | cipher_museum | 2.0 | public | null | null |
cda-0021321 | ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w38⟩ ⟨w08⟩ ⟨w22⟩ ⟨w32⟩ ⟨w22⟩ ⟨w38⟩ ⟨w32⟩ ⟨w20⟩ ⟨a37⟩ ⟨w08⟩ ⟨w04⟩ ⟨w32⟩ ⟨a07⟩ ⟨w08⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨a23⟩ ⟨w32⟩ ⟨a07⟩ ⟨a17⟩ ⟨w22⟩ ⟨a19⟩ ⟨w20⟩ ⟨a13⟩ ⟨w20⟩ ⟨w08⟩ ⟨a25⟩ ⟨w20⟩ ⟨a17⟩ ⟨a25⟩ ⟨a19⟩ ⟨w32⟩ ⟨w26⟩ ⟨a19⟩ ⟨w08⟩ ⟨w04⟩ ⟨w22⟩ ⟨w32⟩ ⟨a07⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨a25⟩ ⟨w20⟩ ⟨a37⟩ ⟨a... | ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w38⟩ ⟨w08⟩ ⟨w22⟩ ⟨w32⟩ ⟨w22⟩ ⟨w38⟩ ⟨w32⟩ ⟨w20⟩ ⟨a37⟩ ⟨w08⟩ ⟨w04⟩ ⟨w32⟩ ⟨a07⟩ ⟨w08⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨a23⟩ ⟨w32⟩ ⟨a07⟩ ⟨a17⟩ ⟨w22⟩ ⟨a19⟩ ⟨w20⟩ ⟨a13⟩ ⟨w20⟩ ⟨w08⟩ ⟨a25⟩ ⟨w20⟩ ⟨a17⟩ ⟨a25⟩ ⟨a19⟩ ⟨w32⟩ ⟨w26⟩ ⟨a19⟩ ⟨w08⟩ ⟨w04⟩ ⟨w22⟩ ⟨w32⟩ ⟨a07⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨a25⟩ ⟨w20⟩ ⟨a37⟩ ⟨a... | THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION | babington | babington | null | {} | hard | en | 91 | 91 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
hill-186 | WTYQGKPGFLDWANDD | WTYQGKPGFLDWANDD | PROCEED AS PLANNED | hill | hill | polygraphic | {
"a": 5,
"b": 3,
"c": 2,
"d": 7
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
bifid-v2-0623 | GFRQDBGPHRLDHIZCLCDABE | GFRQDBGPHRLDHIZCLCDABE | FLEET ASSEMBLES AT HARBOR | bifid | bifid | fractionation | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
sigaba-v2-0010 | NAOKMTSIIPFDDWHIAHBAW | NAOKMTSIIPFDDWHIAHBAW | BRIDGE DESTROYED AT DAWN | sigaba | sigaba | machine | {
"type": "seed",
"value": "ECMMARK"
} | expert | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
cda-0016720 | daiin chedy okshy okain okain kaiiin chol sheol okal kaiiin sheol ykcheol sheedy sheol shal otedy ctaiin sheedy chedal dal cheol ytaiin okal ypchol lkaiin aiiin okshy ytaiin chedal otaiin shor sheedy chol ytaiin daiin choldaiin okshy lkaiin chedy qokedy qotedy okal ytedy qokeedy otedy otain ctaiin oror otaiin okeedy | daiin chedy okshy okain okain kaiiin chol sheol okal kaiiin sheol ykcheol sheedy sheol shal otedy ctaiin sheedy chedal dal cheol ytaiin okal ypchol lkaiin aiiin okshy ytaiin chedal otaiin shor sheedy chol ytaiin daiin choldaiin okshy lkaiin chedy qokedy qotedy okal ytedy qokeedy otedy otain ctaiin oror otaiin okeedy | THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER | voynich_render | voynich_render | null | {} | hard | en | 268 | 268 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
wheatstone-v2-0006 | QHRKTOOYOHRDG | QHRKTOOYOHRDG | THE PASS IS HELD | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "TELEGRAPHY"
} | advanced | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
cda-0013004 | . ..... ... ... .... .... .... .. ... .... ... ..... ..... .... ... .. . ..... . . .... ... .... ..... .... .. . ..... .... ... .... ..... ... ... . ... . ..... .... .. .... .... . . .. .... ... ... .... .... ..... .... .. .... ... ... . . . .... .. .... .... ... .... .... .... .. .. .... | . ..... ... ... .... .... .... .. ... .... ... ..... ..... .... ... .. . ..... . . .... ... .... ..... .... .. . ..... .... ... .... ..... ... ... . ... . ..... .... .. .... .... . . .. .... ... ... .... .... ..... .... .. .... ... ... . . . .... .. .... .... ... .... .... .... .. .. .... | ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | tap_code | tap_code | null | {} | hard | en | 142 | 142 | synthetic_educational | null | null | [
"dot_count_decode",
"grid_position_search"
] | Tap code: letters encoded as dot-groups representing row and column in 5×5 grid. |
cda-0019373 | 802 999 836 842 811 814 835 999 806 800 840 999 807 834 801 856 855 825 817 872 999 847 801 859 857 812 851 841 855 999 804 860 858 999 825 859 999 806 800 839 999 800 834 855 844 999 803 812 999 868 852 844 839 818 999 802 857 803 801 856 821 999 813 840 807 842 811 812 856 999 805 874 999 852 813 864 812 851 855 825 ... | 802 999 836 842 811 814 835 999 806 800 840 999 807 834 801 856 855 825 817 872 999 847 801 859 857 812 851 841 855 999 804 860 858 999 825 859 999 806 800 839 999 800 834 855 844 999 803 812 999 868 852 844 839 818 999 802 857 803 801 856 821 999 813 840 807 842 811 812 856 999 805 874 999 852 813 864 812 851 855 825 ... | A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG ATBASH ENCODES BY REVERSING THE ALPHABET | culper_ring | culper_ring | null | {} | medium | en | 79 | 79 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
cda-0005602 | QVTSVS OAR URYYZOA VAGEBNHQRR CHPYVQ XRL QELCGBUEOCUL WA ANARGRNA FRIRAGL FWK | QVTSVS OAR URYYZOA VAGEBNHQRR CHPYVQ XRL QELCGBUEOCUL WA ANARGRNA FRIRAGL FWK | DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX | porta | porta | null | {
"key": "CIPHER"
} | medium | en | 67 | 67 | synthetic_educational | null | null | [
"kasiski_examination",
"index_of_coincidence"
] | Porta: 13-row table polyalphabetic cipher; reciprocal (encrypt = decrypt). |
atbash-v2-0069 | LMXV FKLM Z NRWMRTSG WIVZIB DSROV R KLMWVIVW DVZP ZMW DVZIB LEVI NZMB Z JFZRMG ELOFNV LU OLIV | LMXV FKLM Z NRWMRTSG WIVZIB DSROV R KLMWVIVW DVZP ZMW DVZIB LEVI NZMB Z JFZRMG ELOFNV LU OLIV | ONCE UPON A MIDNIGHT DREARY WHILE I PONDERED WEAK AND WEARY OVER MANY A QUAINT VOLUME OF LORE | atbash | atbash | substitution | {
"type": "none",
"value": null
} | beginner | en | 76 | 93 | cipher_museum | 2.0 | public | null | null |
cda-0018761 | 857 821 812 999 834 826 804 851 802 853 873 999 847 851 812 855 812 853 863 813 854 999 832 839 842 866 834 813 809 819 812 999 817 844 851 999 857 823 813 999 808 843 837 837 861 840 824 858 872 999 | 857 821 812 999 834 826 804 851 802 853 873 999 847 851 812 855 812 853 863 813 854 999 832 839 842 866 834 813 809 819 812 999 817 844 851 999 857 823 813 999 808 843 837 837 861 840 824 858 872 999 | THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | culper_ring | culper_ring | null | {} | medium | en | 43 | 43 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
cardano-autokey-044 | GPPQQRGTRPKKBHERNWTLGBGALKGMQMASFTCHTNQWALGTZUUVNLTAUNZGW | GPPQQRGTRPKKBHERNWTLGBGALKGMQMASFTCHTNQWALGTZUUVNLTAUNZGW | ELEMENTARY MY DEAR WATSON THE GAME IS AFOOT AND THE CRIMINAL IS CLOSE | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "CARDANO"
} | advanced | en | 57 | 57 | cipher_museum | 0.2 | public | null | null |
wheatstone-v3-0270 | SDARBSSHALNRPESBEKPBCATEKSDAQGEAQBRLVAAKCHBKTNLPNLUPJLKSDQEKKEKASAAKNLPSY | SDARBSSHALNRPESBEKPBCATEKSDAQGEAQBRLVAAKCHBKTNLPNLUPJLKSDQEKKEKASAAKNLPSY | THE BATTLE OF BRITAIN RAGED IN THE SKIES ABOVE ENGLAND FOR FOUR MONTHS IN NINETEEN FORTY | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "BRITAIN"
} | advanced | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v2-0004 | ABWZUBPMJZMIKP | ABWZUBPMJZMIKP | STORM THE BREACH | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "SEOUL"
} | beginner | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
trifid-205 | +ENXUUAIECIAYXQ | +ENXUUAIECIAYXQ | SILENCE IS GOLDEN | trifid | trifid | fractionation | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
porta-193 | YGZVLVMKWZJAUPK | YGZVLVMKWZJAUPK | ENEMY FORCES NEAR | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "PORTAGE"
} | intermediate | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
sigaba-v2-0497 | BBIXIGMWVRKONZDHNWMOTINSJTAARUNCHIRNCRPANMGDHISSRIGGUHPMXRHMDNFKHZYSVLJYFFRWTSVECFOJQZBMXXJEFWDOBZNSRYSTHKMOJOCKASZWGZWHMPTOLGFUZNNEVCXSUWXDDVLIPBIJHBTKUNNBPBVPFSMLWYJVPMHGEXD | BBIXIGMWVRKONZDHNWMOTINSJTAARUNCHIRNCRPANMGDHISSRIGGUHPMXRHMDNFKHZYSVLJYFFRWTSVECFOJQZBMXXJEFWDOBZNSRYSTHKMOJOCKASZWGZWHMPTOLGFUZNNEVCXSUWXDDVLIPBIJHBTKUNNBPBVPFSMLWYJVPMHGEXD | THE HISTORY OF CRYPTOLOGY IS A BATTLE OF WITS BETWEEN THOSE WHO MAKE CODES AND THOSE WHO BREAK THEM FOR EVERY SYSTEM DEVISED BY A CUNNING ENCIPHERER A PATIENT CRYPTANALYST HAS FOUND A METHOD TO REVEAL ITS SECRETS | sigaba | sigaba | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 175 | 175 | cipher_museum | 2.0 | public | null | null |
m209-v2-0232 | XZRBLCRQMXZLLOLPBZNOQYDRRDRSQHPWZDIUORIKXFRSCYZQCLENLZCHJVPVLVXEPNLPIXBBUQVZLAVKR | XZRBLCRQMXZLLOLPBZNOQYDRRDRSQHPWZDIUORIKXFRSCYZQCLENLZCHJVPVLVXEPNLPIXBBUQVZLAVKR | GENERAL ORDERS NUMBER ONE ALL COMMUNICATIONS SHALL BE ENCRYPTED USING THE APPROVED CIPHER DISK | m209 | m209 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
vic-142 | 904858595491749386 | 904858595491749386 | RALLY AT DAWN | vic | vic | substitution | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
cda-0018797 | K r· L ┌· ⌐ Γ· └ ⌐· L ─ r L r Γ· ┐· r· L ┌· ⌒ ┌· Γ· K L X K L ⌣ K Γ· ─ ⌐ ⌣· Γ· ¬· ⌣· ⌐ ¬· ┐· ⌐ K K L ┌· ─ X L r X· ┌· Γ· K ⌒· r └ ⌐ Γ· ┌ X X r· ┘· X· └ Γ ¬ L K L X K L Γ X· ─ Γ L ┌· X r ┌· X· K Γ· ─ ⌒· K r· L ¬ Γ· ⌐· Γ· Γ r Γ· ┐· r· L ┌· r ┘· ┌ ¬ Γ· ─ L X ⌐ ┐· ┘· └ ⌒· ¬ Γ· X· X X └· X· ⌐ ┌· L ⌒ Γ· K r· K ┌· ⌐ ─ X ┐· ┘·... | K r· L ┌· ⌐ Γ· └ ⌐· L ─ r L r Γ· ┐· r· L ┌· ⌒ ┌· Γ· K L X K L ⌣ K Γ· ─ ⌐ ⌣· Γ· ¬· ⌣· ⌐ ¬· ┐· ⌐ K K L ┌· ─ X L r X· ┌· Γ· K ⌒· r └ ⌐ Γ· ┌ X X r· ┘· X· └ Γ ¬ L K L X K L Γ X· ─ Γ L ┌· X r ┌· X· K Γ· ─ ⌒· K r· L ¬ Γ· ⌐· Γ· Γ r Γ· ┐· r· L ┌· r ┘· ┌ ¬ Γ· ─ L X ⌐ ┐· ┘· └ ⌒· ¬ Γ· X· X X └· X· ⌐ ┌· L ⌒ Γ· K r· K ┌· ⌐ ─ X ┐· ┘·... | THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | pigpen | pigpen | null | {} | medium | en | 77 | 77 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
rail-fence-v3-0466 | IAIKNDNNNSNMNDNGTEYEIIAOWBYNGSCWEMMETSEGSYBHFLIIEYEOLNGNMQNNNDSUEIIE | IAIKNDNNNSNMNDNGTEYEIIAOWBYNGSCWEMMETSEGSYBHFLIIEYEOLNGNMQNNNDSUEIIE | IN MY BEGINNING IS MY END AND IN MY END IS MY BEGINNING AS THE QUEEN OF SCOTS KNEW WELL | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 11
} | intermediate | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
m209-v3-0228 | ZOSBYOPPTBBB | ZOSBYOPPTBBB | GOLD FROM LEAD | m209 | m209 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
cda-0013835 | CVXIJ GJWLG PTGTX KRVXH QUVLA YDATX QORQH DDHSA XNVYN FH | CVXIJ GJWLG PTGTX KRVXH QUVLA YDATX QORQH DDHSA XNVYN FH | PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION | one_time_pad | one_time_pad | null | {} | medium | en | 47 | 47 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
two-square-v3-0141 | THEFACDFEZROYEPZ | THEFACDFEZROYEPZ | THE FACTORY ROARS | two_square | two_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v2-0212 | WIL FXUHUFH WLUW KHQMU YLBLXWLM ULNSLQOLU WC MLWLYDHQL WIL FLR ELQJWI CK X ZHJLQLYL OHBILY FLR | WIL FXUHUFH WLUW KHQMU YLBLXWLM ULNSLQOLU WC MLWLYDHQL WIL FLR ELQJWI CK X ZHJLQLYL OHBILY FLR | THE KASISKI TEST FINDS REPEATED SEQUENCES TO DETERMINE THE KEY LENGTH OF A VIGENERE CIPHER KEY | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "VATSYANA"
} | intermediate | en | 79 | 94 | cipher_museum | 2.0 | public | null | null |
solitaire-v2-0338 | OUEDFXYWXRHUNINATDZSUUHYCYXIBIMHMIIFQEPIZLXYVQQPOGNVJMENILBDUZKJUSLKYLAJIKOQNUJ | OUEDFXYWXRHUNINATDZSUUHYCYXIBIMHMIIFQEPIZLXYVQQPOGNVJMENILBDUZKJUSLKYLAJIKOQNUJ | THE KASISKI TEST FINDS REPEATED SEQUENCES TO DETERMINE THE KEY LENGTH OF A VIGENERE CIPHER KEY | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "PONTIFEX"
} | expert | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
cda-0016380 | TROOP HEADS ENTER KEEPS ARRAY STAGE INPUT SCOUT KNOWN INCUR EXTRA XEROX AFTER MOTOR ISSUE NOTES AMONG TROOP INTEL OPENS NIGHT FIRST INNER NORTH DEPTH | TROOP HEADS ENTER KEEPS ARRAY STAGE INPUT SCOUT KNOWN INCUR EXTRA XEROX AFTER MOTOR ISSUE NOTES AMONG TROOP INTEL OPENS NIGHT FIRST INNER NORTH DEPTH | THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION | 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. |
fractionated-morse-v3-0336 | NFUOSVVAAEOSXFAMF | NFUOSVVAAEOSXFAMF | THE WIND IS WITH US | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-044 | THGGP27C3T3UBOLG2CZZZBRNPRMOODFMHEFEMPJYQIA3D3EPKA76ABFFI | THGGP27C3T3UBOLG2CZZZBRNPRMOODFMHEFEMPJYQIA3D3EPKA76ABFFI | ELEMENTARY MY DEAR WATSON THE GAME IS AFOOT AND THE CRIMINAL IS CLOSE | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "XMCKL"
} | expert | en | 57 | 57 | cipher_museum | 0.2 | public | null | null |
cda-0015667 | shor otaiin shor cheol sharal qokeedy chol choldaiin qotedy choldaiin otain dal okshy shor oror otain sheedy chedal kaiiin dainy chol chedy qokedy kaiiin otaiin okedy shedy ykcheol rcheol | shor otaiin shor cheol sharal qokeedy chol choldaiin qotedy choldaiin otain dal okshy shor oror otain sheedy chedal kaiiin dainy chol chedy qokedy kaiiin otaiin okedy shedy ykcheol rcheol | ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN | voynich_render | voynich_render | null | {} | hard | en | 159 | 159 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
voynich-render-007 | oaiqg lkxxkir rij | oaiqg lkxxkir rij | ABORT MISSION NOW | voynich_render | voynich_render | substitution | {
"type": "none",
"value": null
} | expert | en | 15 | 17 | cipher_museum | 0.2 | public | null | null |
diana-v3-0105 | ZIAORAJHLXCQIWEFAP | ZIAORAJHLXCQIWEFAP | THE ORACLE HAS SPOKEN | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "SPECIAL"
} | intermediate | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
enigma-v2-1257 | VQYEAFCZJWTEOXEWXCQYBIHCABCXUKKAHKKDUOFPCMTHZUFVTYVBOLZKMNKNEQMCWDSLNVHODCXISOWCNENZYAWVWSPNJJGYYHTURECGQEZVQLJXDLZTMRVQSUOFHUUISVBMHGOBXJABVCDVSWTFZDUTJZOFRLZHXZJ | VQYEAFCZJWTEOXEWXCQYBIHCABCXUKKAHKKDUOFPCMTHZUFVTYVBOLZKMNKNEQMCWDSLNVHODCXISOWCNENZYAWVWSPNJJGYYHTURECGQEZVQLJXDLZTMRVQSUOFHUUISVBMHGOBXJABVCDVSWTFZDUTJZOFRLZHXZJ | 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 | enigma | enigma | machine | {
"type": "rotor_start",
"value": "ZZA"
} | expert | en | 163 | 163 | cipher_museum | 2.0 | public | null | null |
geheimschreiber-v3-0376 | OPOPXUBVTPHFGKTSETYRLFBEHMKAMVISNQFCVNRRCHIFCHWYNGGYTAEVDQDDZIAMMSUVPQEBEC | OPOPXUBVTPHFGKTSETYRLFBEHMKAMVISNQFCVNRRCHIFCHWYNGGYTAEVDQDDZIAMMSUVPQEBEC | GENERAL PATTON LED THE THIRD ARMY IN A DARING SWEEP ACROSS FRANCE FOLLOWING THE BREAKOUT | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "TEUTON"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0012379 | BBHR JRSQ KARY TYPM PXCV YLLM NQTK ONRA VJMM AYCS QBMT QLW | BBHR JRSQ KARY TYPM PXCV YLLM NQTK ONRA VJMM AYCS QBMT QLW | PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION | one_time_pad | one_time_pad | null | {} | medium | en | 47 | 47 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
caesar-v2-1402 | UGNWJ EQ JWLJWSL | UGNWJ EQ JWLJWSL | COVER MY RETREAT | caesar | caesar | substitution | {
"type": "shift",
"value": 18
} | beginner | en | 14 | 16 | cipher_museum | 2.0 | public | null | null |
kama-sutra-080 | ZUIXAFNUTXWI URKVB | ZUIXAFNUTXWI URKVB | CRYPTOGRAPHY RULES | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | en | 17 | 18 | cipher_museum | 0.2 | public | null | null |
cda-0002522 | VOFQ PLGE PNEW KUDQ FMPJ FQUI WZFN WTES VMVP GYBQ NNGU DMEQ ROFZ YZKA FAVM ZAJV CHKN AIIX CAUM TVVO FNQC TZRC CZGJ JXJM TBTM UBYV LMAE QYEX QTAI JCUA SBBZ GAVO FMPQ ITBU CKJP OMWA GKSW VWTZ UWEZ GHUM CXQS ZINX JHCM VQEJ JXJM T | VOFQ PLGE PNEW KUDQ FMPJ FQUI WZFN WTES VMVP GYBQ NNGU DMEQ ROFZ YZKA FAVM ZAJV CHKN AIIX CAUM TVVO FNQC TZRC CZGJ JXJM TBTM UBYV LMAE QYEX QTAI JCUA SBBZ GAVO FMPQ ITBU CKJP OMWA GKSW VWTZ UWEZ GHUM CXQS ZINX JHCM VQEJ JXJM T | THE INDEX OF COINCIDENCE IS A USEFUL CLUE THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER | gronsfeld | gronsfeld | null | {
"key": "271828"
} | hard | en | 181 | 181 | synthetic_educational | null | null | [
"kasiski_examination",
"digit_key_brute_force"
] | Gronsfeld: Vigenère variant with a digit-only key (0–9 per position). |
caesar-fr-029 | BE XLM TBLX WX YTBKX IXNK TNQ XGYTGML TOXV WXL YTGMHFXL | BE XLM TBLX WX YTBKX IXNK TNQ XGYTGML TOXV WXL YTGMHFXL | IL EST AISE DE FAIRE PEUR AUX ENFANTS AVEC DES FANTOMES | caesar | caesar | substitution | {
"type": "shift",
"value": 19
} | beginner | fr | 45 | 55 | cipher_museum | 0.2 | public | null | null |
four-square-v3-0376 | SBDLIQGKQSEGGBTIMULFTHAFGQEISSNULMLFZTSBDLIQGQEXEGRYEQNUHFSBCKACDDTOAFRYEQNUHFSBXQMQHTLUYRSBDFLMEXLRCRPNLUSBASRZIQAQXRCNEAGIIGAFGQFUGSEATUGVSADFITGCLPEAMUFURMSY | SBDLIQGKQSEGGBTIMULFTHAFGQEISSNULMLFZTSBDLIQGQEXEGRYEQNUHFSBCKACDDTOAFRYEQNUHFSBXQMQHTLUYRSBDFLMEXLRCRPNLUSBASRZIQAQXRCNEAGIIGAFGQFUGSEATUGVSADFITGCLPEAMUFURMSY | 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 | four_square | four_square | polygraphic | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
gronsfeld-v3-0455 | VLKMXRIXQMGRZKOPJOZMU | VLKMXRIXQMGRZKOPJOZMU | THE EXPERIMENT CONFIRMS | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "24680"
} | intermediate | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
cda-0002406 | PNTAIYDOBOSOERWEGEQANESHFLSEESSSOTFDOKSVTRAACHSTTNIEICRAEHTTUNEWMYORRETHCYOLUXCAENTCNCCSSUEERPEDNITXMRLXARIHRNEYLNKEHIIEEEBLSINEEYUBLBXFBOED | PNTAIYDOBOSOERWEGEQANESHFLSEESSSOTFDOKSVTRAACHSTTNIEICRAEHTTUNEWMYORRETHCYOLUXCAENTCNCCSSUEERPEDNITXMRLXARIHRNEYLNKEHIIEEEBLSINEEYUBLBXFBOED | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION ATBASH ENCODES BY REVERSING THE ALPHABET HONESTLY | double_transposition | double_transposition | null | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | hard | en | 140 | 140 | synthetic_educational | null | null | [
"key_length_search",
"anagram_recovery"
] | Double columnar transposition: apply columnar twice for stronger security. |
four-square-v2-0138 | ANGYPCWTLNAV | ANGYPCWTLNAV | KNOW THYSELF | four_square | four_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
cda-0011408 | TBBQ RQHPNGVBANY GBBYF RKCYNVA GURVE YVZVGF GUR VAQRK BS PBVAPVQRAPR VF N HFRSHY PYHR | TBBQ RQHPNGVBANY GBBYF RKCYNVA GURVE YVZVGF GUR VAQRK BS PBVAPVQRAPR VF N HFRSHY PYHR | GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS THE INDEX OF COINCIDENCE IS A USEFUL CLUE | rot13 | rot13 | null | {
"shift": 13
} | medium | en | 72 | 72 | synthetic_educational | null | null | [] | |
affine-es-013 | VA FIUIPIV | VA FIUIPIV | NO PASARAN | affine | affine | substitution | {
"type": "keyword",
"value": "5,8"
} | beginner | es | 9 | 10 | cipher_museum | 0.2 | public | null | null |
kama-sutra-v2-0109 | KL QGLVLJCVL QGL VLBVLZLXQYQURLZ CJ QGL IXUQLM ZQYQLZ CJ YDLVUOY UX HLXLVYE OCXHVLZZ YZZLDPELM YBBLYEUXH QC QGL ZIBVLDL FIMHL CJ QGL KCVEM JCV QGL VLOQUQIML CJ CIV UXQLXQUCXZ MC ZCELDXEA BIPEUZG | KL QGLVLJCVL QGL VLBVLZLXQYQURLZ CJ QGL IXUQLM ZQYQLZ CJ YDLVUOY UX HLXLVYE OCXHVLZZ YZZLDPELM YBBLYEUXH QC QGL ZIBVLDL FIMHL CJ QGL KCVEM JCV QGL VLOQUQIML CJ CIV UXQLXQUCXZ MC ZCELDXEA BIPEUZG | 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 | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "SANSKRIT"
} | intermediate | en | 164 | 194 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v2-0160 | BCJIGCFRCGSQZCFIA | BCJIGCFRCGSQZCFIA | NOVUS ORDO SECLORUM | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "JOSEON"
} | beginner | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
bazeries-v2-0848 | QIXBGLBMMBHIIXYAVQMIIIPTVVSPJTBPBIPMPWTVSLAPPOSTPHTILYTEGHBAHTNXGTHBFPMTBHIPAO | QIXBGLBMMBHIIXYAVQMIIIPTVVSPJTBPBIPMPWTVSLAPPOSTPHTILYTEGHBAHTNXGTHBFPMTBHIPAO | YOUR MISSION IF YOU CHOOSE TO ACCEPT IT IS TO EXTRACT THE AGENT FROM BEHIND ENEMY LINES TONIGHT | bazeries | bazeries | transposition | {
"type": "integer",
"value": 71
} | advanced | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
autokey-de-017 | FIHNIYHIETMZETXRZEANSXZETFHLEALVEF | FIHNIYHIETMZETXRZEANSXZETFHLEALVEF | DAS GEHEIMNIS ALLER MACHT IST DAS WISSEN | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | de | 34 | 34 | cipher_museum | 0.2 | public | null | null |
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