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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
kama-sutra-v2-0021 | WXCK QGAZLEJ | WXCK QGAZLEJ | KNOW THYSELF | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "SANSKRIT"
} | intermediate | en | 11 | 12 | cipher_museum | 2.0 | public | null | null |
affine-v2-0085 | MYLXBLUJF HUHSFZPZ LEWSVPAZ AOL MHJA AOHA JLYAHPU SLAALYZ HWWLHY MHY TVYL VMALU PU LUNSPZO ALEA | MYLXBLUJF HUHSFZPZ LEWSVPAZ AOL MHJA AOHA JLYAHPU SLAALYZ HWWLHY MHY TVYL VMALU PU LUNSPZO ALEA | FREQUENCY ANALYSIS EXPLOITS THE FACT THAT CERTAIN LETTERS APPEAR FAR MORE OFTEN IN ENGLISH TEXT | affine | affine | substitution | {
"a": 1,
"b": 7
} | beginner | en | 81 | 95 | cipher_museum | 2.0 | public | null | null |
four-square-v3-0419 | QDOAZKITALSMQRHLCGPIQX | QDOAZKITALSMQRHLCGPIQX | THE EXPERIMENT CONFIRMS | four_square | four_square | polygraphic | {
"key1": "WISDOM",
"key2": "COURAGE"
} | advanced | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
cda-0016411 | CAESA RSHIF TEDTH EALPH ABETB YTHRE EPOSX TIONX ANAFX INECX PHERX PPLIX SALIN EARFU NCTIO NTOEA CHLET TERER RORCO RRECZ IONAX DDETE CTIOX AREFU NDAMZ NTALZ OSECU RESYS TEMSX LWAYX | CAESA RSHIF TEDTH EALPH ABETB YTHRE EPOSX TIONX ANAFX INECX PHERX PPLIX SALIN EARFU NCTIO NTOEA CHLET TERER RORCO RRECZ IONAX DDETE CTIOX AREFU NDAMZ NTALZ OSECU RESYS TEMSX LWAYX | CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS ALWAYS | 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. |
nihilist-v3-0353 | 83 26 70 54 47 76 28 77 35 45 63 59 59 36 44 85 58 80 45 47 76 58 58 35 54 76 26 80 66 44 76 46 59 33 64 76 25 79 33 23 67 37 49 32 37 85 27 76 45 27 97 46 47 66 57 84 38 59 33 25 97 46 49 34 34 85 59 79 66 44 76 58 86 32 | 83 26 70 54 47 76 28 77 35 45 63 59 59 36 44 85 58 80 45 47 76 58 58 35 54 76 26 80 66 44 76 46 59 33 64 76 25 79 33 23 67 37 49 32 37 85 27 76 45 27 97 46 47 66 57 84 38 59 33 25 97 46 49 34 34 85 59 79 66 44 76 58 86 32 | GALILEO POINTED HIS TELESCOPE AT THE HEAVENS AND CONFIRMED THAT THE EARTH ORBITS THE SUN | nihilist | nihilist | fractionation | {
"polybius": "NARODNAYA",
"keyword": "VOLYA"
} | advanced | en | 148 | 221 | cipher_museum | 2.0 | public | null | null |
wheatstone-v3-0029 | QHRNRGLJTQOTNRLJFYIP | QHRNRGLJTQOTNRLJFYIP | THE REDCOATS ARE COMING | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "TELEGRAPHY"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
cda-0021924 | WLFYOV GIZMHKLHRGRLM ZKKORVH XLOFNMZI VMXIBKGRLM GDRXV LYHVIEZYOV VERWVMXV XLNVH YVULIV XLMURWVMXV WRUURV ZMW SVOONZM RMGILWFXVW KFYORX PVB XIBKGLTIZKSB RM MRMVGVVM HVEVMGB HRC | WLFYOV GIZMHKLHRGRLM ZKKORVH XLOFNMZI VMXIBKGRLM GDRXV LYHVIEZYOV VERWVMXV XLNVH YVULIV XLMURWVMXV WRUURV ZMW SVOONZM RMGILWFXVW KFYORX PVB XIBKGLTIZKSB RM MRMVGVVM HVEVMGB HRC | DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX | atbash | atbash | null | {} | hard | en | 155 | 155 | synthetic_educational | null | null | [
"self_inverse_check",
"frequency_analysis"
] | Atbash maps A↔Z, B↔Y, … and is its own inverse. |
cda-0021815 | 5.5.8 17.2.3 11.5.1 17.5.2 6.6.4 3.5.7 6.6.1 7.1.5 9.1.1 3.4.3 5.5.7 9.5.1 7.5.6 5.1.8 11.5.8 10.5.8 10.1.1 8.6.4 19.2.8 15.6.10 6.4.4 16.3.4 19.1.9 5.1.5 17.1.5 4.3.6 18.4.1 15.2.3 6.1.7 12.5.1 20.5.2 5.6.9 2.5.5 3.3.4 17.2.3 1.6.5 2.3.9 6.3.6 4.2.4 20.4.1 4.3.10 8.6.9 13.5.2 7.2.7 16.4.10 12.3.3 12.5.5 12.2.8 6.6.9 1... | 5.5.8 17.2.3 11.5.1 17.5.2 6.6.4 3.5.7 6.6.1 7.1.5 9.1.1 3.4.3 5.5.7 9.5.1 7.5.6 5.1.8 11.5.8 10.5.8 10.1.1 8.6.4 19.2.8 15.6.10 6.4.4 16.3.4 19.1.9 5.1.5 17.1.5 4.3.6 18.4.1 15.2.3 6.1.7 12.5.1 20.5.2 5.6.9 2.5.5 3.3.4 17.2.3 1.6.5 2.3.9 6.3.6 4.2.4 20.4.1 4.3.10 8.6.9 13.5.2 7.2.7 16.4.10 12.3.3 12.5.5 12.2.8 6.6.9 1... | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS | arnold_andre | arnold_andre | null | {} | hard | en | 94 | 94 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
playfair-v3-0082 | STLPTGTWCQKIKTPCOPUMTYOHKLUGLOCRNPLCBKMLBMETCSZNMLDLGYKUKONYOHAQKHTEUNGSZKCLTDPAQKOLXL | STLPTGTWCQKIKTPCOPUMTYOHKLUGLOCRNPLCBKMLBMETCSZNMLDLGYKUKONYOHAQKHTEUNGSZKCLTDPAQKOLXL | RSA ENCRYPTION RELIES ON THE MATHEMATICAL DIFFICULTY OF FACTORING THE PRODUCT OF TWO LARGE PRIMES | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "PALACE"
} | intermediate | en | 86 | 86 | cipher_museum | 2.0 | public | null | null |
kryha-v3-0300 | ITRHWBMXBYQBFGONRZFHEFVEXLOYHMCFRDDMJJBJGYJQNWTLWAHIKCMDAEUJHXQVHOZCIPUVSCVPXYXLNQJSWSNMNVYOCPNYFTOOITPXDWRCNOWMXTMKPBKHSVWUDXDEWSYNKFAGTXXBOXWMDRMGWVFPSRDZMFVZOWPXWYF | ITRHWBMXBYQBFGONRZFHEFVEXLOYHMCFRDDMJJBJGYJQNWTLWAHIKCMDAEUJHXQVHOZCIPUVSCVPXYXLNQJSWSNMNVYOCPNYFTOOITPXDWRCNOWMXTMKPBKHSVWUDXDEWSYNKFAGTXXBOXWMDRMGWVFPSRDZMFVZOWPXWYF | WHEN IN THE COURSE OF HUMAN EVENTS IT BECOMES NECESSARY FOR ONE PEOPLE TO DISSOLVE THE POLITICAL BANDS WHICH HAVE CONNECTED THEM WITH ANOTHER THEY SHOULD DECLARE THE CAUSES WHICH IMPEL THE SEPARATION | kryha | kryha | machine | {
"type": "keyword",
"value": "PRAGUE"
} | expert | en | 167 | 167 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v2-0035 | LJKWQLEUOJASF | LJKWQLEUOJASF | IN GOD WE TRUST | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
cda-0020116 | 16.4.2 4.6.8 15.6.5 4.2.6 11.5.9 2.1.2 15.3.3 3.2.10 13.1.4 14.2.2 8.4.3 6.2.2 18.2.2 1.5.10 10.6.4 6.3.5 7.4.6 16.2.1 6.4.3 1.1.1 9.1.10 18.6.6 18.1.7 12.2.4 14.2.10 11.2.7 5.1.3 18.6.8 11.3.9 12.5.1 4.4.4 4.3.5 11.3.4 2.5.4 2.1.10 1.6.9 12.5.1 5.3.9 3.3.7 19.1.1 11.5.4 6.1.6 7.2.4 17.2.8 13.1.10 20.5.3 1.5.5 17.1.8 6... | 16.4.2 4.6.8 15.6.5 4.2.6 11.5.9 2.1.2 15.3.3 3.2.10 13.1.4 14.2.2 8.4.3 6.2.2 18.2.2 1.5.10 10.6.4 6.3.5 7.4.6 16.2.1 6.4.3 1.1.1 9.1.10 18.6.6 18.1.7 12.2.4 14.2.10 11.2.7 5.1.3 18.6.8 11.3.9 12.5.1 4.4.4 4.3.5 11.3.4 2.5.4 2.1.10 1.6.9 12.5.1 5.3.9 3.3.7 19.1.1 11.5.4 6.1.6 7.2.4 17.2.8 13.1.10 20.5.3 1.5.5 17.1.8 6... | INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING THE VIGENERE CIPHER USES A REPEATING KEYWORD | arnold_andre | arnold_andre | null | {} | hard | en | 190 | 190 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
great-cipher-048 | 120 112 174 123 175 168 138 140 182 102 140 164 174 123 173 131 163 112 151 109 113 174 123 149 122 107 174 174 123 122 132 138 140 147 112 176 173 164 129 154 169 168 163 147 | 120 112 174 123 175 168 138 140 182 102 140 164 174 123 173 131 163 112 151 109 113 174 123 149 122 107 174 174 123 122 132 138 140 147 112 176 173 164 129 154 169 168 163 147 | IF YOU KNOW BOTH YOURSELF AND YOUR ENEMY YOU NEED NOT FEAR THE RESULT | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "LOUIS"
} | expert | en | 132 | 175 | cipher_museum | 0.2 | public | null | null |
diana-v2-0304 | ZKEYNSUIACRZYOZJEIBBWUCINNXLYZYKLLASMXJHABXWEOIEQKEXNETGYKMELXPYLEMHNKAS | ZKEYNSUIACRZYOZJEIBBWUCINNXLYZYKLLASMXJHABXWEOIEQKEXNETGYKMELXPYLEMHNKAS | GENERAL GRANT HAS TAKEN VICKSBURG THE GREAT RIVER IS NOW OPEN FROM ITS SOURCE TO THE SEA | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "FORCES"
} | intermediate | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
cda-0014470 | UPCJX OENHQ DOTOV GASEZ AWXSC QZVZI HCAZL OXCFE XVFSH YPCAG TFPAW LXTEL XPJME EHDPY DOOJB RGQZR NIZAI VIVCV KBJGO MMWFV SGFGL AYVCM KLOZS CUNKK JFBZR WEMKU KCJPY YSIBY FJWSS RNYUJ HOSED NWHTQ QKOIO HZRRM BXCWK VJQEI DIZWP FWFAG TWRQG EPUZ | UPCJX OENHQ DOTOV GASEZ AWXSC QZVZI HCAZL OXCFE XVFSH YPCAG TFPAW LXTEL XPJME EHDPY DOOJB RGQZR NIZAI VIVCV KBJGO MMWFV SGFGL AYVCM KLOZS CUNKK JFBZR WEMKU KCJPY YSIBY FJWSS RNYUJ HOSED NWHTQ QKOIO HZRRM BXCWK VJQEI DIZWP FWFAG TWRQG EPUZ | ATBASH ENCODES BY REVERSING THE ALPHABET KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL | vernam | vernam | null | {} | hard | en | 199 | 199 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
stager-route-v2-0032 | EUNPLUMURXXIBXXUSX | EUNPLUMURXXIBXXUSX | E PLURIBUS UNUM | stager_route | stager_route | transposition | {
"type": "integer",
"value": 9
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
culper-ring-v3-0067 | 998 822 800 819 818 814 813 999 998 822 804 999 122 998 805 814 820 813 803 999 100 998 818 819 817 820 802 819 820 817 804 999 101 998 803 813 800 999 102 109 106 105 998 803 814 820 801 811 804 999 998 807 804 811 808 823 999 101 998 801 817 804 800 819 807 819 800 810 808 813 806 999 998 801 804 800 820 819 824 999 | 998 822 800 819 818 814 813 999 998 822 804 999 122 998 805 814 820 813 803 999 100 998 818 819 817 820 802 819 820 817 804 999 101 998 803 813 800 999 102 109 106 105 998 803 814 820 801 811 804 999 998 807 804 811 808 823 999 101 998 801 817 804 800 819 807 819 800 810 808 813 806 999 998 801 804 800 820 819 824 999 | WATSON WE HAVE FOUND THE STRUCTURE OF DNA AND IT IS A DOUBLE HELIX OF BREATHTAKING BEAUTY | culper_ring | culper_ring | codebook | {
"type": "none",
"value": null
} | expert | en | 240 | 319 | cipher_museum | 2.0 | public | null | null |
jn25-v2-0062 | 26199 26187 26184 26191 26194 26197 26183 26188 26198 26192 26104 26198 26187 26184 26195 26187 26184 26197 26183 26188 26198 26187 26180 26191 26191 26193 26194 26199 26102 26180 26193 26199 26187 26184 26192 26180 26190 26184 26199 26187 26192 26184 26191 26188 26184 26183 26194 26102 26193 26188 26193 26186 26197 26... | 26199 26187 26184 26191 26194 26197 26183 26188 26198 26192 26104 26198 26187 26184 26195 26187 26184 26197 26183 26188 26198 26187 26180 26191 26191 26193 26194 26199 26102 26180 26193 26199 26187 26184 26192 26180 26190 26184 26199 26187 26192 26184 26191 26188 26184 26183 26194 26102 26193 26188 26193 26186 26197 26... | THE LORD IS MY SHEPHERD I SHALL NOT WANT HE MAKETH ME LIE DOWN IN GREEN PASTURES BY STILL WATERS | jn25 | jn25 | codebook | {
"type": "additive",
"value": "16180"
} | expert | en | 385 | 461 | cipher_museum | 2.0 | public | null | null |
geez-monastic-v2-0083 | LAJTMYQJHXVYCJMLRYUJLJMBPVZYDYVPBQJPBILAJKYVVLHIJXJBIYLPDPYBULPVVXHJUPBILAMJPLU | LAJTMYQJHXVYCJMLRYUJLJMBPVZYDYVPBQJPBILAJKYVVLHIJXJBIYLPDPYBULPVVXHJUPBILAMJPLU | THE PRICE OF LIBERTY IS ETERNAL VIGILANCE AND THE WILL TO DEFEND IT AGAINST ALL FOES AND THREATS | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "ETHIOPIA"
} | advanced | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
cda-0016460 | 4 15 14 15 20 3 15 14 6 21 19 5 15 2 6 21 19 3 1 20 9 15 14 23 9 20 8 5 14 3 18 25 16 20 9 15 14 8 9 12 12 3 9 16 8 5 18 21 19 5 19 12 9 14 5 1 18 1 12 7 5 2 18 1 20 15 5 14 3 18 25 16 20 2 12 15 3 11 19 15 6 12 5 20 20 5 18 19 6 1 9 12 3 12 15 19 5 4 9 19 1 16 15 19 20 21 18 5 14 15 20 1 19 12 15 7 1 14 11 5 18 3 11 8... | 4 15 14 15 20 3 15 14 6 21 19 5 15 2 6 21 19 3 1 20 9 15 14 23 9 20 8 5 14 3 18 25 16 20 9 15 14 8 9 12 12 3 9 16 8 5 18 21 19 5 19 12 9 14 5 1 18 1 12 7 5 2 18 1 20 15 5 14 3 18 25 16 20 2 12 15 3 11 19 15 6 12 5 20 20 5 18 19 6 1 9 12 3 12 15 19 5 4 9 19 1 16 15 19 20 21 18 5 14 15 20 1 19 12 15 7 1 14 11 5 18 3 11 8... | DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS FAIL CLOSED IS A POSTURE NOT A SLOGAN KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 187 | 187 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
cda-0014482 | 77 69 11 82 80 29 82 29 52 80 43 65 66 50 69 29 50 61 29 69 66 20 80 69 55 82 29 20 43 57 82 66 66 82 80 76 80 82 72 59 82 29 52 43 61 59 20 61 66 50 66 59 66 50 69 29 52 50 65 36 82 80 61 77 68 65 82 68 52 36 57 82 66 66 82 80 66 69 68 11 50 76 76 82 80 82 29 66 57 82 66 66 82 80 52 68 82 61 68 80 61 36 50 76 66 82 11... | 77 69 11 82 80 29 82 29 52 80 43 65 66 50 69 29 50 61 29 69 66 20 80 69 55 82 29 20 43 57 82 66 66 82 80 76 80 82 72 59 82 29 52 43 61 59 20 61 66 50 66 59 66 50 69 29 52 50 65 36 82 80 61 77 68 65 82 68 52 36 57 82 66 66 82 80 66 69 68 11 50 76 76 82 80 82 29 66 57 82 66 66 82 80 52 68 82 61 68 80 61 36 50 76 66 82 11... | MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | wallis_cipher | wallis_cipher | null | {} | hard | en | 169 | 169 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
diana-v2-0236 | WLMVIPANHYVPMYZIABEAJLLMGEIESETXAUEZBRJBWASCBUVUFBBKPFIPOXXCXPGKJXJANSLLZUEPIAPRZANSLLMJRWHZXIYQTLHEZUCTSKCLVETDHEMGEIESETPEFHBXKLRWYPLN | WLMVIPANHYVPMYZIABEAJLLMGEIESETXAUEZBRJBWASCBUVUFBBKPFIPOXXCXPGKJXJANSLLZUEPIAPRZANSLLMJRWHZXIYQTLHEZUCTSKCLVETDHEMGEIESETPEFHBXKLRWYPLN | WE SHALL FIGHT ON THE BEACHES WE SHALL FIGHT ON THE LANDING GROUNDS WE SHALL FIGHT IN THE FIELDS AND IN THE STREETS WE SHALL FIGHT IN THE HILLS WE SHALL NEVER SURRENDER | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "SPECIAL"
} | intermediate | en | 136 | 136 | cipher_museum | 2.0 | public | null | null |
porta-036 | PSTKYTKMKTZBPGEUONRLPPSTKYTYTGVEUHCOYFVVCQNEHURJQCL | PSTKYTKMKTZBPGEUONRLPPSTKYTYTGVEUHCOYFVVCQNEHURJQCL | ALL THE WORLDS A STAGE AND ALL THE MEN AND WOMEN MERELY PLAYERS | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "FORTIFY"
} | intermediate | en | 51 | 51 | cipher_museum | 0.2 | public | null | null |
rail-fence-v3-0018 | THRTEENCAIOCYUHRRET | THRTEENCAIOCYUHRRET | TREACHERY IN THE COURT | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 7
} | intermediate | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
rail-fence-083 | TISDHKNIDAEGE | TISDHKNIDAEGE | THE KING IS DEAD | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 3
} | intermediate | en | 13 | 13 | cipher_museum | 0.2 | public | null | null |
m94-v3-0239 | IRHQCMYYVPBEYQLVTWWGDGIAUSLHBHPLPZUBEMUVFHNWLQNYNXWLEBMSOVCJYFSAXYECFYV | IRHQCMYYVPBEYQLVTWWGDGIAUSLHBHPLPZUBEMUVFHNWLQNYNXWLEBMSOVCJYFSAXYECFYV | TO INFINITY AND BEYOND THE FRONTIER OF HUMAN KNOWLEDGE CALLS TO EACH GENERATION ANEW | m94 | m94 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
cda-0021743 | again needs after flank final inner night enter clear inner place heads enter route after parts posts lower inner early swift along light incur naval | again needs after flank final inner night enter clear inner place heads enter route after parts posts lower inner early swift along light incur naval | AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION PERHAPS | 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. |
purple-v3-0306 | FZPGAWPMJAFCMVOHMWZQBXNLXQWXAKPMIQGGJOXEKWWQBJADITJCJQAYJTYRZQPDLBJOFFNDWOXGDKPRDDFGJOPULSYWUUOZVRJJGPRQYXASNQTEOKNXIZWAJRJLYDNCZYVPOMFJTBFDFUFWVPGOGQQHZAFNTZRU | FZPGAWPMJAFCMVOHMWZQBXNLXQWXAKPMIQGGJOXEKWWQBJADITJCJQAYJTYRZQPDLBJOFFNDWOXGDKPRDDFGJOPULSYWUUOZVRJJGPRQYXASNQTEOKNXIZWAJRJLYDNCZYVPOMFJTBFDFUFWVPGOGQQHZAFNTZRU | FOR I KNOW THE THOUGHTS THAT I THINK TOWARD YOU SAITH THE LORD THOUGHTS OF PEACE AND NOT OF EVIL TO GIVE YOU AN EXPECTED END THEN SHALL YE CALL UPON ME AND YE SHALL GO AND PRAY UNTO ME AND I WILL HEARKEN | purple | purple | machine | {
"type": "seed",
"value": "SAKURA"
} | expert | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
playfair-v2-0125 | OUFUXTFETFCOAMRTOK | OUFUXTFETFCOAMRTOK | ENEMY RETREATS NORTH | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "FORTRESS"
} | intermediate | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
red-type-a-v2-0026 | GIUQYAELHAGNILVNE | GIUQYAELHAGNILVNE | KEEP YOUR POWDER DRY | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "SAKURA"
} | advanced | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
red-type-a-v2-0204 | HYCEMYLATPYPRULEWOIPEJPKBANUYQHEFEAFYHSQAHKYLRYMIHZUPVANCUQOWYTVEWNTUGVIQRIWP | HYCEMYLATPYPRULEWOIPEJPKBANUYQHEFEAFYHSQAHKYLRYMIHZUPVANCUQOWYTVEWNTUGVIQRIWP | NAVAL UNITS IN POSITION OFF THE COAST AWAITING SIGNAL TO COMMENCE SHORE BOMBARDMENT AT DAWN | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "YAMATO"
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
rail-fence-085 | SNSDIECIGLELEON | SNSDIECIGLELEON | SILENCE IS GOLDEN | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 3
} | intermediate | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
hill-v2-0027 | NKFWZIVYFADVSV | NKFWZIVYFADVSV | HONOR ABOVE ALL | hill | hill | polygraphic | {
"a": 3,
"b": 5,
"c": 2,
"d": 9
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
gronsfeld-v3-0373 | BWYONCDYAUFRKTREZFFJNHWPLBQIPEFETTKFUXKNTWWVHFGKVDSMFWJOHXLLBUWPNSVNUVJQZANT | BWYONCDYAUFRKTREZFFJNHWPLBQIPEFETTKFUXKNTWWVHFGKVDSMFWJOHXLLBUWPNSVNUVJQZANT | AT THE BATTLE OF MIDWAY AMERICAN DIVE BOMBERS DESTROYED FOUR JAPANESE CARRIERS IN MINUTES | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "13579"
} | intermediate | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
hill-v2-0227 | RQZDACIJNNZEHMHICRQOBDRQFYTDPCHVPKIQTWNSFWACTMKDJBSVRGKDBRCJJFHQHPFWMKOCHVIJWL | RQZDACIJNNZEHMHICRQOBDRQFYTDPCHVPKIQTWNSFWACTMKDJBSVRGKDBRCJJFHQHPFWMKOCHVIJWL | DEUTSCHLAND UBER ALLES IN DER WELT WENN ES STETS ZU SCHUTZ UND TRUTZE BRÜDERLICH ZUSAMMENHÄLT | hill | hill | polygraphic | {
"a": 5,
"b": 7,
"c": 2,
"d": 9
} | advanced | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
playfair-v2-0649 | CQSTCUQIGAHQQFVUULDHQDGUVGGAFOUDQEGDEOOPCSQIQUGUVGWUOIQEFNTCEOETVNEVDHHYDWBS | CQSTCUQIGAHQQFVUULDHQDGUVGGAFOUDQEGDEOOPCSQIQUGUVGWUOIQEFNTCEOETVNEVDHHYDWBS | TRUST IN THE LORD WITH ALL THINE HEART AND LEAN NOT UNTO THINE OWN UNDERSTANDING IN ALL WAYS | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
diana-v3-0206 | ZIAQINESWLCVLUEGAAPZUEVYVPHXMLLVEJSLLYLEASOXLKGSHFWWXAYZKCBKUVSLLLGENSKLLVGWYZVNEANLBPCYPMKYHTZPTHSWQQAYKEDDBEVXBLRCJSFOYSCVCJEVTZFMTEWXYEVGEYLABAYMLBJBWPEYTZDMUOUAL | ZIAQINESWLCVLUEGAAPZUEVYVPHXMLLVEJSLLYLEASOXLKGSHFWWXAYZKCBKUVSLLLGENSKLLVGWYZVNEANLBPCYPMKYHTZPTHSWQQAYKEDDBEVXBLRCJSFOYSCVCJEVTZFMTEWXYEVGEYLABAYMLBJBWPEYTZDMUOUAL | THE MANHATTAN PROJECT BROUGHT TOGETHER THE GREATEST SCIENTIFIC MINDS OF THE TWENTIETH CENTURY IN A RACE TO BUILD THE ATOMIC BOMB BEFORE NAZI GERMANY COULD DO SO THE EFFORT CHANGED THE WORLD FOREVER | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "SPECIAL"
} | intermediate | en | 165 | 165 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v2-0182 | WYBCKBCHKVOHQCIFGSCHVSFGAOMHOYSPIHOGTCFASUWJSASZWPSFHMCFUWJSASRSOHV | WYBCKBCHKVOHQCIFGSCHVSFGAOMHOYSPIHOGTCFASUWJSASZWPSFHMCFUWJSASRSOHV | I KNOW NOT WHAT COURSE OTHERS MAY TAKE BUT AS FOR ME GIVE ME LIBERTY OR GIVE ME DEATH | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "JOSEON"
} | beginner | en | 67 | 67 | cipher_museum | 2.0 | public | null | null |
caesar-v2-1029 | YBCK HVMGSZT | YBCK HVMGSZT | KNOW THYSELF | caesar | caesar | substitution | {
"type": "shift",
"value": 14
} | beginner | en | 11 | 12 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v2-0211 | FLVPAFQEXWKWQDAIZTDMPMJYYCJSRGHXDKTDIJXWSOBAKVVKEVRDWLJVMQFXEUMEAHNECVAVYEXSXRBPJ | FLVPAFQEXWKWQDAIZTDMPMJYYCJSRGHXDKTDIJXWSOBAKVVKEVRDWLJVMQFXEUMEAHNECVAVYEXSXRBPJ | FREQUENCY ANALYSIS EXPLOITS THE FACT THAT CERTAIN LETTERS APPEAR FAR MORE OFTEN IN ENGLISH TEXT | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 5
} | expert | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
m209-v3-0189 | KWAQOGYNLNPJAXUXWDLYAJPJVBLRUIYBJKBJYMZELYYBPPLKWJIJWPSBKZLXMYKJAZJPKUALJFJZK | KWAQOGYNLNPJAXUXWDLYAJPJVBLRUIYBJKBJYMZELYYBPPLKWJIJWPSBKZLXMYKJAZJPKUALJFJZK | THE POWERS NOT DELEGATED TO THE UNITED STATES BY THE CONSTITUTION ARE RESERVED TO THE STATES | m209 | m209 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
culper-ring-v2-0126 | 998 822 804 999 100 150 101 100 998 820 813 808 819 804 803 999 998 818 819 800 819 804 818 999 104 998 814 817 803 804 817 999 103 998 805 814 817 812 999 105 998 812 814 817 804 999 998 815 804 817 805 804 802 819 999 998 820 813 808 814 813 999 998 804 818 819 800 801 811 808 818 807 999 998 809 820 818 819 808 802 ... | 998 822 804 999 100 150 101 100 998 820 813 808 819 804 803 999 998 818 819 800 819 804 818 999 104 998 814 817 803 804 817 999 103 998 805 814 817 812 999 105 998 812 814 817 804 999 998 815 804 817 805 804 802 819 999 998 820 813 808 814 813 999 998 804 818 819 800 801 811 808 818 807 999 998 809 820 818 819 808 802 ... | WE THE PEOPLE OF THE UNITED STATES IN ORDER TO FORM A MORE PERFECT UNION ESTABLISH JUSTICE INSURE DOMESTIC TRANQUILITY PROVIDE FOR THE COMMON DEFENSE PROMOTE THE GENERAL WELFARE AND SECURE THE BLESSINGS OF LIBERTY | culper_ring | culper_ring | codebook | {
"type": "none",
"value": null
} | expert | en | 552 | 735 | cipher_museum | 2.0 | public | null | null |
cda-0016546 | 2.5.4 14.6.7 18.3.9 17.4.6 14.3.2 9.2.2 17.3.1 9.5.2 6.2.1 1.1.5 20.5.6 6.6.3 18.5.1 13.1.9 12.5.8 1.6.2 11.5.5 1.6.5 7.6.2 3.2.7 18.1.5 7.6.6 2.4.9 19.6.4 8.4.5 18.6.6 14.6.10 20.1.2 19.2.9 7.6.9 17.5.1 6.4.3 2.5.7 10.6.1 11.3.2 4.3.1 19.3.10 6.4.8 7.2.2 12.3.8 3.3.10 13.5.5 20.3.10 15.2.10 15.6.2 18.5.6 16.4.3 4.4.10... | 2.5.4 14.6.7 18.3.9 17.4.6 14.3.2 9.2.2 17.3.1 9.5.2 6.2.1 1.1.5 20.5.6 6.6.3 18.5.1 13.1.9 12.5.8 1.6.2 11.5.5 1.6.5 7.6.2 3.2.7 18.1.5 7.6.6 2.4.9 19.6.4 8.4.5 18.6.6 14.6.10 20.1.2 19.2.9 7.6.9 17.5.1 6.4.3 2.5.7 10.6.1 11.3.2 4.3.1 19.3.10 6.4.8 7.2.2 12.3.8 3.3.10 13.5.5 20.3.10 15.2.10 15.6.2 18.5.6 16.4.3 4.4.10... | DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF | arnold_andre | arnold_andre | null | {} | hard | en | 160 | 160 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
affine-la-037 | IVVEWZ SACFZWU VAJEU APXA UCSLAPEQ | IVVEWZ SACFZWU VAJEU APXA UCSLAPEQ | ANNUIT COEPTIS NOVUS ORDO SECLORUM | affine | affine | substitution | {
"type": "keyword",
"value": "5,8"
} | beginner | la | 30 | 34 | cipher_museum | 0.2 | public | null | null |
one-time-pad-009 | PGRZWOAWFBOQWAHDAAPQF | PGRZWOAWFBOQWAHDAAPQF | SUPPLY LINE COMPROMISED | one_time_pad | one_time_pad | stream | {
"type": "pad",
"value": "XMCKLQPOS (repeating)"
} | expert | en | 21 | 21 | cipher_museum | 0.2 | public | null | null |
chaocipher-169 | OROISIXZWVVGRTBCEOOIXMFSPHVKUBAIFPKESZAAXWRPYATMHQQOHWV | OROISIXZWVVGRTBCEOOIXMFSPHVKUBAIFPKESZAAXWRPYATMHQQOHWV | TO BE OR NOT TO BE THAT IS THE QUESTION WHETHER TIS NOBLER IN THE MIND | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 55 | 55 | cipher_museum | 0.2 | public | null | null |
cda-0002305 | HUS ZVPFODM CDSFSFISG XNCJZSQUS SAF GVS NAAZGBVFM GVS SAIE EEHOFR QWCVSE GGRE HJA YRKKBDR CAZLPWHE GDGOESG FZCJZM | HUS ZVPFODM CDSFSFISG XNCJZSQUS SAF GVS NAAZGBVFM GVS SAIE EEHOFR QWCVSE GGRE HJA YRKKBDR CAZLPWHE GDGOESG FZCJZM | THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES SLOWLY | porta | porta | null | {
"key": "KEY"
} | hard | en | 97 | 97 | synthetic_educational | null | null | [
"kasiski_examination",
"index_of_coincidence"
] | Porta: 13-row table polyalphabetic cipher; reciprocal (encrypt = decrypt). |
hill-v2-0107 | HGPLMCXZMICBWUFADIMILOECIYPLPKOXTFHTREMQMDHGQXNKEPJIMCDPTGHKEPNNSYNATGDPYAXSACFAXAQVDZTFVUNNYHBJIIRPBJXIOXJNRELAQETGDPOXRPDVPAZVHXWATSRPBJOWIOSV | HGPLMCXZMICBWUFADIMILOECIYPLPKOXTFHTREMQMDHGQXNKEPJIMCDPTGHKEPNNSYNATGDPYAXSACFAXAQVDZTFVUNNYHBJIIRPBJXIOXJNRELAQETGDPOXRPDVPAZVHXWATSRPBJOWIOSV | FOURSCORE AND SEVEN YEARS AGO OUR FATHERS BROUGHT FORTH ON THIS CONTINENT A NEW NATION CONCEIVED IN LIBERTY AND DEDICATED TO THE PROPOSITION THAT ALL MEN ARE CREATED EQUAL | hill | hill | polygraphic | {
"a": 3,
"b": 5,
"c": 2,
"d": 9
} | advanced | en | 144 | 144 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v2-0438 | QFUUV XZNRM REV MNRAX MJNXN RAN ZJRM Y ULLNA IUO LUA MJN VNLNEXN UL UOA YXFREV ERMYUE | QFUUV XZNRM REV MNRAX MJNXN RAN ZJRM Y ULLNA IUO LUA MJN VNLNEXN UL UOA YXFREV ERMYUE | BLOOD SWEAT AND TEARS THESE ARE WHAT I OFFER YOU FOR THE DEFENSE OF OUR ISLAND NATION | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "WISDOM"
} | intermediate | en | 69 | 85 | cipher_museum | 2.0 | public | null | null |
double-transposition-v2-0243 | HNTOLILRARPIETHOTUDIGTLRCHOOFNGHDGTHEPOERORVNGBEWPTHSNLNNTOPOBDSTUOSEMCEOETNORRCLARRRTIOGNRSATIARPRPINSEHAUIERTRHEIERANMTDRAEOSEEEAIIOETNNSAHYFSNLNOEMAOESLHAENOOFSEFRTATPDORNREEHE | HNTOLILRARPIETHOTUDIGTLRCHOOFNGHDGTHEPOERORVNGBEWPTHSNLNNTOPOBDSTUOSEMCEOETNORRCLARRRTIOGNRSATIARPRPINSEHAUIERTRHEIERANMTDRAEOSEEEAIIOETNNSAHYFSNLNOEMAOESLHAENOOFSEFRTATPDORNREEHE | FOR I AM PERSUADED THAT NEITHER DEATH NOR LIFE NOR ANGELS NOR PRINCIPALITIES NOR POWERS NOR THINGS PRESENT NOR THINGS TO COME NOR HEIGHT NOR DEPTH NOR ANY OTHER CREATURE SHALL BE ABLE TO SEPARATE US FROM THE LOVE OF GOD | double_transposition | double_transposition | transposition | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 179 | 179 | cipher_museum | 2.0 | public | null | null |
red-type-a-v2-0035 | ALNYGVAPJYKL | ALNYGVAPJYKL | IN GOD WE TRUST | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "SAKURA"
} | advanced | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
zimmermann-040 | 99999 90022 90004 99998 99999 90018 90007 90000 90011 90011 99998 99999 90005 90008 90006 90007 90019 99998 00013 00000 99999 90001 90004 90000 90002 90007 90004 90018 99998 00002 99999 90022 90004 99998 99999 90018 90007 90000 90011 90011 99998 99999 90013 90004 90021 90004 90017 99998 99999 90018 90020 90017 90017 90... | 99999 90022 90004 99998 99999 90018 90007 90000 90011 90011 99998 99999 90005 90008 90006 90007 90019 99998 00013 00000 99999 90001 90004 90000 90002 90007 90004 90018 99998 00002 99999 90022 90004 99998 99999 90018 90007 90000 90011 90011 99998 99999 90013 90004 90021 90004 90017 99998 99999 90018 90020 90017 90017 90... | WE SHALL FIGHT ON THE BEACHES AND WE SHALL NEVER SURRENDER | zimmermann | zimmermann | codebook | {
"type": "none",
"value": null
} | expert | en | 295 | 353 | cipher_museum | 0.2 | public | null | null |
kl7-v2-0103 | SZYFXGHXCCLLIYQCVJZFSRNTQKAXUZSFEBWAVPRVGJXGDYKMSPECOSSPPKTOMGODUGLMAFILSJCLVEGK | SZYFXGHXCCLLIYQCVJZFSRNTQKAXUZSFEBWAVPRVGJXGDYKMSPECOSSPPKTOMGODUGLMAFILSJCLVEGK | THE AMBASSADOR HAS RECEIVED OUR MOST URGENT DISPATCHES AND AWAITS INSTRUCTIONS FROM LONDON HQ | kl7 | kl7 | machine | {
"type": "seed",
"value": "NATO"
} | expert | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
red-type-a-v3-0176 | MTOMYRUELGUPYAOWZFUXEUFUPYRGULOGVOTYFARMGOZYFUEDKUUPZFYJSYQUHCFUZUWSN | MTOMYRUELGUPYAOWZFUXEUFUPYRGULOGVOTYFARMGOZYFUEDKUUPZFYJSYQUHCFUZUWSN | THE LOVE OF MONEY IS THE ROOT OF ALL EVIL BUT IT IS THE LOVE OF GOOD THAT MOVES THE WORLD | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "YAMATO"
} | advanced | en | 69 | 69 | cipher_museum | 2.0 | public | null | null |
cda-0004183 | CNEI HIAO SANE NULP DKIC SUOS ENIE MSCY DDFN IOOE EUAT LRXN LRIU DOCC TOME FELR NNRC IUAR STOS E | CNEI HIAO SANE NULP DKIC SUOS ENIE MSCY DDFN IOOE EUAT LRXN LRIU DOCC TOME FELR NNRC IUAR STOS E | COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER THE INDEX OF COINCIDENCE IS A USEFUL CLUE | scytale | scytale | null | {
"cols": 11
} | medium | en | 77 | 77 | synthetic_educational | null | null | [
"column_count_search",
"anagram_recovery"
] | Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter. |
cda-0022144 | GDL HJFZIV XRKSVI VMXIBKGH WRTIZKSH DRGS GDL KLOBYRFH ZOKSZYVGH UZRO XOLHVW RH Z KLHGFIV MLG Z HOLTZM XZVHZI HSRUGVW GSV ZOKSZYVG YB GSIVV KLHRGRLMH Z HXBGZOV RH Z ILW FHVW YB HKZIGZMH GL VMXIBKG NVHHZTVH SLMVHGOB | GDL HJFZIV XRKSVI VMXIBKGH WRTIZKSH DRGS GDL KLOBYRFH ZOKSZYVGH UZRO XOLHVW RH Z KLHGFIV MLG Z HOLTZM XZVHZI HSRUGVW GSV ZOKSZYVG YB GSIVV KLHRGRLMH Z HXBGZOV RH Z ILW FHVW YB HKZIGZMH GL VMXIBKG NVHHZTVH SLMVHGOB | TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS FAIL CLOSED IS A POSTURE NOT A SLOGAN CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES HONESTLY | atbash | atbash | null | {} | hard | en | 178 | 178 | synthetic_educational | null | null | [
"self_inverse_check",
"frequency_analysis"
] | Atbash maps A↔Z, B↔Y, … and is its own inverse. |
cda-0014939 | ⟨a25⟩ ⟨w34⟩ ⟨w10⟩ ⟨w22⟩ ⟨w16⟩ ⟨w28⟩ ⟨w08⟩ ⟨a19⟩ ⟨w20⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨a19⟩ ⟨w40⟩ ⟨a13⟩ ⟨a25⟩ ⟨w22⟩ ⟨a17⟩ ⟨w32⟩ ⟨w26⟩ ⟨a19⟩ ⟨w08⟩ ⟨a13⟩ ⟨a29⟩ ⟨w22⟩ ⟨w34⟩ ⟨w32⟩ ⟨a25⟩ ⟨a29⟩ ⟨a25⟩ ⟨w34⟩ ⟨w10⟩ ⟨a13⟩ ⟨w10⟩ ⟨a01⟩ ⟨w40⟩ ⟨a11⟩ ⟨w32⟩ ⟨w28⟩ ⟨w22⟩ ⟨w08⟩ ⟨a01⟩ ⟨a13⟩ ⟨a29⟩ ⟨w08⟩ ⟨a11⟩ ⟨w20⟩ ⟨a... | ⟨a25⟩ ⟨w34⟩ ⟨w10⟩ ⟨w22⟩ ⟨w16⟩ ⟨w28⟩ ⟨w08⟩ ⟨a19⟩ ⟨w20⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨a19⟩ ⟨w40⟩ ⟨a13⟩ ⟨a25⟩ ⟨w22⟩ ⟨a17⟩ ⟨w32⟩ ⟨w26⟩ ⟨a19⟩ ⟨w08⟩ ⟨a13⟩ ⟨a29⟩ ⟨w22⟩ ⟨w34⟩ ⟨w32⟩ ⟨a25⟩ ⟨a29⟩ ⟨a25⟩ ⟨w34⟩ ⟨w10⟩ ⟨a13⟩ ⟨w10⟩ ⟨a01⟩ ⟨w40⟩ ⟨a11⟩ ⟨w32⟩ ⟨w28⟩ ⟨w22⟩ ⟨w08⟩ ⟨a01⟩ ⟨a13⟩ ⟨a29⟩ ⟨w08⟩ ⟨a11⟩ ⟨w20⟩ ⟨a... | TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS | babington | babington | null | {} | medium | en | 55 | 55 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
adfgx-v3-0302 | DAFAAGGAXGFGFADXGADGAGXFGAFFGFAFDGFDDADG | DAFAAGGAXGFGFADXGADGAGXFGAFFGFAFDGFDDADG | THE KING DEMANDS FEALTY | adfgx | adfgx | fractionation | {
"polybius": "DRAGON",
"columnar": "THUNDER"
} | advanced | en | 40 | 40 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v2-0346 | FAKDSDWEQUPAMYBLPVNYAABBFYNSLSGANRPGJQAESLQPYBANLQBBGHQQBJUVAPBALVMGDSEQMAPBLYQPTFMMGMYDQBYGFMTGBMB | FAKDSDWEQUPAMYBLPVNYAABBFYNSLSGANRPGJQAESLQPYBANLQBBGHQQBJUVAPBALVMGDSEQMAPBLYQPTFMMGMYDQBYGFMTGBMB | CODED TRANSMISSION INDICATES ENEMY FORCES ASSEMBLING ALONG THE BORDER WITH HEAVY ARTILLERY UNITS | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 99 | 99 | cipher_museum | 2.0 | public | null | null |
affine-v2-1794 | SIEXQW OYGHXE BLU OGBU | SIEXQW OYGHXE BLU OGBU | WISDOM GUARDS THE GATE | affine | affine | substitution | {
"a": 23,
"b": 6
} | beginner | en | 19 | 22 | cipher_museum | 2.0 | public | null | null |
playfair-v3-0618 | QOFVFPVUENPOOTFEOXMHKNOPLEFEQOOAWDOQITHOGVHGBPENOMLRENEUFHRDLMNKBCNIWNROXPOMQO | QOFVFPVUENPOOTFEOXMHKNOPLEFEQOOAWDOQITHOGVHGBPENOMLRENEUFHRDLMNKBCNIWNROXPOMQO | ON D DAY THE ALLIED FORCES LANDED ON FIVE NORMANDY BEACHES IN THE GREATEST SEABORNE INVASION | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "TRIUMPH"
} | intermediate | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
cda-0008996 | GEOAFCBFVGWBA QNCVSEF ESNEEOAUS YSGGSEF JWGUBHG FHPFGVGHGWBA | GEOAFCBFVGWBA QNCVSEF ESNEEOAUS YSGGSEF JWGUBHG FHPFGVGHGWBA | TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION | porta | porta | null | {
"key": "PATTERN"
} | medium | en | 55 | 55 | synthetic_educational | null | null | [] | |
cda-0004591 | TIGS PFEM IRBN UCVT HVFV LTLQ QOAJ TVSK RLBC OCEF WBKC LTHZ KRQK Y | TIGS PFEM IRBN UCVT HVFV LTLQ QOAJ TVSK RLBC OCEF WBKC LTHZ KRQK Y | THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY | trithemius | trithemius | null | {} | medium | en | 53 | 53 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
cda-0021679 | 11 43 13 54 44 11 31 15 24 43 11 42 34 14 45 43 15 14 12 54 43 35 11 42 44 11 33 43 44 34 15 33 13 42 54 35 44 32 15 43 43 11 22 15 43 21 42 24 15 14 32 11 33 15 43 44 24 32 11 44 15 14 25 15 54 31 15 33 22 44 23 21 42 34 32 43 44 11 44 24 43 44 24 13 43 44 23 15 12 15 43 44 31 15 43 43 34 33 43 43 23 34 52 52 23 15 42... | 11 43 13 54 44 11 31 15 24 43 11 42 34 14 45 43 15 14 12 54 43 35 11 42 44 11 33 43 44 34 15 33 13 42 54 35 44 32 15 43 43 11 22 15 43 21 42 24 15 14 32 11 33 15 43 44 24 32 11 44 15 14 25 15 54 31 15 33 22 44 23 21 42 34 32 43 44 11 44 24 43 44 24 13 43 44 23 15 12 15 43 44 31 15 43 43 34 33 43 43 23 34 52 52 23 15 42... | A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS THE BEST LESSONS SHOW WHERE THE METHOD FAILS AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER | polybius | polybius | null | {} | hard | en | 170 | 170 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
typex-v3-0379 | YZBIBBLDQVKNYJQERMRVVHFMOKOOXSMOOWYUUGIMYWEPSAFQOAKLPFCYAJMWJZGRTKUNYOBDB | YZBIBBLDQVKNYJQERMRVVHFMOKOOXSMOOWYUUGIMYWEPSAFQOAKLPFCYAJMWJZGRTKUNYOBDB | WATSON WE HAVE FOUND THE STRUCTURE OF DNA AND IT IS A DOUBLE HELIX OF BREATHTAKING BEAUTY | typex | typex | machine | {
"type": "keyword",
"value": "WINSTON"
} | expert | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
slidex-v3-0258 | XJHHKQRTQIXJRTVXIKYQRXJZGFIKYQYOHHKQRTQIXJSMVJNOWPRVZEAIBIACQMKHKWMU | XJHHKQRTQIXJRTVXIKYQRXJZGFIKYQYOHHKQRTQIXJSMVJNOWPRVZEAIBIACQMKHKWMU | IN MY BEGINNING IS MY END AND IN MY END IS MY BEGINNING AS THE QUEEN OF SCOTS KNEW WELL | slidex | slidex | transposition | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
cda-0005217 | CNGGREA JBEQF URYC OERNX ZBABNYCUNORGVP FHOFGVGHGVBA PYNFFVPNY PVCUREF GRNPU JUL ZBQREA FRPHEVGL ZNGGREF GUR GEVGURZVHF PVCURE NQINAPRF GUR NYCUNORG OL BAR CBFVGVBA RNPU YRGGRE SEVRQZNA RFGVZNGRQ XRL YRATGU SEBZ FGNGVFGVPF | CNGGREA JBEQF URYC OERNX ZBABNYCUNORGVP FHOFGVGHGVBA PYNFFVPNY PVCUREF GRNPU JUL ZBQREA FRPHEVGL ZNGGREF GUR GEVGURZVHF PVCURE NQINAPRF GUR NYCUNORG OL BAR CBFVGVBA RNPU YRGGRE SEVRQZNA RFGVZNGRQ XRL YRATGU SEBZ FGNGVFGVPF | PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 193 | 193 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
cardano-autokey-v3-0109 | XGIHQWALXKLGBTXL | XGIHQWALXKLGBTXL | SOUND THE TRUMPETS | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "FLORENCE"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
cda-0002251 | DINIAENTHPHCTEHIOERNMCGIGRIPAAAESERIOSRTARPFLEARAPSEFPFCOSNNXOARHULICEHPHFXININLIRTXXPECECEEPPRANEOHCSTTATRXXOELTIAIESQDTUERPLOECATXXECIRNIHSSER | DINIAENTHPHCTEHIOERNMCGIGRIPAAAESERIOSRTARPFLEARAPSEFPFCOSNNXOARHULICEHPHFXININLIRTXXPECECEEPPRANEOHCSTTATRXXOELTIAIESQDTUERPLOECATXXECIRNIHSSER | DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION | stager_route | stager_route | null | {
"cols": 12
} | hard | en | 144 | 144 | synthetic_educational | null | null | [
"column_count_search",
"route_pattern_search"
] | Route (Stager) cipher: write into rectangle, read via alternating column route. |
trithemius-018 | BVTQ EKZLZ AOLPVBV | BVTQ EKZLZ AOLPVBV | BURN AFTER READING | trithemius | trithemius | polyalphabetic | {
"type": "none",
"value": null
} | beginner | en | 16 | 18 | cipher_museum | 0.2 | public | null | null |
playfair-v2-0474 | PLFSBQQKPKDKEY | PLFSBQQKPKDKEY | THE PASS IS HELD | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
vic-v3-0119 | 9083493108018993190839189 | 9083493108018993190839189 | THE WIND IS WITH US | vic | vic | substitution | {
"type": "keyword",
"value": "NICKEL"
} | advanced | en | 25 | 25 | cipher_museum | 2.0 | public | null | null |
playfair-v3-0666 | QLBOOALACMPAQW | QLBOOALACMPAQW | THE SIEGE BEGINS | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "WISDOM"
} | intermediate | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v3-0413 | AFLZWKWNWFLWWFLZUWFLMJQAKSSUFWOLGFKQFLZWKARWVLZWOGJCGXUGHWJFAUMKYSDADWGSFVCWHDWJAFLGSMFAXAWVLZWGJQGXYJSNALSLAGFLZSLWPHDSAFWVTGLZLZWXSDDGXSHHDWKSFVLZWGJTALKGXHDSFWLK | AFLZWKWNWFLWWFLZUWFLMJQAKSSUFWOLGFKQFLZWKARWVLZWOGJCGXUGHWJFAUMKYSDADWGSFVCWHDWJAFLGSMFAXAWVLZWGJQGXYJSNALSLAGFLZSLWPHDSAFWVTGLZLZWXSDDGXSHHDWKSFVLZWGJTALKGXHDSFWLK | IN THE SEVENTEENTH CENTURY ISAAC NEWTON SYNTHESIZED THE WORK OF COPERNICUS GALILEO AND KEPLER INTO A UNIFIED THEORY OF GRAVITATION THAT EXPLAINED BOTH THE FALL OF APPLES AND THE ORBITS OF PLANETS | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "DYNASTY"
} | beginner | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-v3-0271 | 562121176425221282882221235092232816212221562387322650291621762022192522386425222402214223432212050622867313856 | 562121176425221282882221235092232816212221562387322650291621762022192522386425222402214223432212050622867313856 | ON D DAY THE ALLIED FORCES LANDED ON FIVE NORMANDY BEACHES IN THE GREATEST SEABORNE INVASION | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "RASTONICEL"
} | advanced | en | 111 | 111 | cipher_museum | 2.0 | public | null | null |
red-type-a-090 | JITKAYKSYFB | JITKAYKSYFB | RALLY AT DAWN | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 11 | 11 | cipher_museum | 0.2 | public | null | null |
cda-0013886 | ABBBA ABBAB ABABA BABBA AAAAA ABABA ABBBA AABBB AAAAA AAAAB AABAA BAABA ABAAA AAABA AAABA ABAAA ABBBA AABBB AABAA BAAAA BAAAB BAABB BAAAB AABAA ABABB BAABB ABABA BAABA ABAAA ABBBA ABABA AABAA AAAAA ABABA ABBBA AABBB AAAAA AAAAB AABAA BAABA BAAAB AABBB ABAAA AABAB BAABA BAAAB ABBAA AABAA BAABB AABAA BAAAA | ABBBA ABBAB ABABA BABBA AAAAA ABABA ABBBA AABBB AAAAA AAAAB AABAA BAABA ABAAA AAABA AAABA ABAAA ABBBA AABBB AABAA BAAAA BAAAB BAABB BAAAB AABAA ABABB BAABB ABABA BAABA ABAAA ABBBA ABABA AABAA AAAAA ABABA ABBBA AABBB AAAAA AAAAB AABAA BAABA BAAAB AABBB ABAAA AABAB BAABA BAAAB ABBAA AABAA BAABB AABAA BAAAA | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS NEVER | bacon_cipher | bacon_cipher | null | {} | hard | en | 255 | 255 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
trifid-v3-0292 | NBIKDXU+CPLBLKYCDCGTPWXQOIPCDPEQYYULDONIESUUTBWHLLKARMCEDVFSFFCZACHNIXKRNG | NBIKDXU+CPLBLKYCDCGTPWXQOIPCDPEQYYULDONIESUUTBWHLLKARMCEDVFSFFCZACHNIXKRNG | NO PERSON SHALL BE HELD TO ANSWER FOR A CAPITAL CRIME UNLESS ON PRESENTMENT OF A GRAND JURY | trifid | trifid | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0018113 | OTOLY PCHOL LKAII NOKAL YTEDY QOKAL KAIII NSHED YAIII NSHEO LOTED YOTAI INCHE DYCHO LCHED YOKSH YCTAI INQOK ALYPC HOLLK AIINC HOLCH EOLQO TEDYS HAIIN SHALQ OKEED YDAIN Y | OTOLY PCHOL LKAII NOKAL YTEDY QOKAL KAIII NSHED YAIII NSHEO LOTED YOTAI INCHE DYCHO LCHED YOKSH YCTAI INQOK ALYPC HOLLK AIINC HOLCH EOLQO TEDYS HAIIN SHALQ OKEED YDAIN Y | ATBASH ENCODES BY REVERSING THE ALPHABET HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | voynich_render | voynich_render | null | {} | hard | en | 141 | 141 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
vigenere-111 | CRQNPXVKGZWIGAGIEGVMPWSKEEVZSGAWVYIDWCVFZBUXQICBFEPPGHFJNZGM | CRQNPXVKGZWIGAGIEGVMPWSKEEVZSGAWVYIDWCVFZBUXQICBFEPPGHFJNZGM | KNOWLEDGE IS POWER AND INFORMATION IS THE KEY TO VICTORY IN ANY CONFLICT | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "SECRET"
} | intermediate | en | 60 | 60 | cipher_museum | 0.2 | public | null | null |
rail-fence-v3-0582 | TDDEHEINFENEGNAOTFBATLREOARHGFNRTNENOITTISEUNYLAKERNETIVMIOIEOOSFRSBNHBAT | TDDEHEINFENEGNAOTFBATLREOARHGFNRTNENOITTISEUNYLAKERNETIVMIOIEOOSFRSBNHBAT | THE BATTLE OF BRITAIN RAGED IN THE SKIES ABOVE ENGLAND FOR FOUR MONTHS IN NINETEEN FORTY | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 12
} | intermediate | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
jn25-v2-0265 | 21243 21244 21235 21259 21244 21232 21239 21237 21249 21255 21242 21243 21239 | 21243 21244 21235 21259 21244 21232 21239 21237 21249 21255 21242 21243 21239 | STAY THE COURSE | jn25 | jn25 | codebook | {
"type": "additive",
"value": "11235"
} | expert | en | 65 | 77 | cipher_museum | 2.0 | public | null | null |
trifid-v2-0394 | HFIRN+AQAPFQSW | HFIRN+AQAPFQSW | COVER MY RETREAT | trifid | trifid | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
double-transposition-v2-0453 | ILLTOGRAHAAGDURYSREEFFELHYCTTKRHDNSTNHATTEAOPTENLDESNIOEBITLTARTYPLNVERASEAMI | ILLTOGRAHAAGDURYSREEFFELHYCTTKRHDNSTNHATTEAOPTENLDESNIOEBITLTARTYPLNVERASEAMI | THE REGIMENT SHALL ADVANCE AT FIRST LIGHT SUPPORTED BY ARTILLERY ON THE EASTERN FLANK TODAY | double_transposition | double_transposition | transposition | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
cda-0003083 | PDPRIVSAEOLDIFEXRRLYBESOXXMOTIUTFOXXNNESERUEXXTMSNCABOXXFESO | PDPRIVSAEOLDIFEXRRLYBESOXXMOTIUTFOXXNNESERUEXXTMSNCABOXXFESO | POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE | stager_route | stager_route | null | {
"cols": 12
} | medium | en | 60 | 60 | synthetic_educational | null | null | [
"column_count_search",
"route_pattern_search"
] | Route (Stager) cipher: write into rectangle, read via alternating column route. |
cda-0015625 | MOIFV ALHKQ EUKJQ SKIEB XONBV WWVBV EEWLM FWLBE SJEHV ALWMB OYTPV EWXVY I | MOIFV ALHKQ EUKJQ SKIEB XONBV WWVBV EEWLM FWLBE SJEHV ALWMB OYTPV EWXVY I | THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER | running_key | running_key | null | {} | medium | en | 61 | 61 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
joseon-yeokhak-v2-0443 | AUSFVGSDDLZAFYKLZJGMYZUZJAKLOZAUZKLJWFYLZWFWLZEWAFWNWJQLJASDSFVLJATMDSLAGF | AUSFVGSDDLZAFYKLZJGMYZUZJAKLOZAUZKLJWFYLZWFWLZEWAFWNWJQLJASDSFVLJATMDSLAGF | I CAN DO ALL THINGS THROUGH CHRIST WHICH STRENGTHENETH ME IN EVERY TRIAL AND TRIBULATION | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "DYNASTY"
} | beginner | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
copiale-178 | B8 M9 L3 S7 M9 E4 M5 P5 K2 L3 O7 K5 N1 E9 N9 I7 G0 I7 K5 A1 W1 E9 M5 C5 N0 Q3 J8 R6 R5 N9 B8 D6 A0 P5 S8 K1 E8 G8 C8 N0 L8 I6 H6 H1 C5 R5 B0 L0 L0 S7 H1 U2 N8 E4 G6 L0 C1 O7 L8 K6 I8 K3 H1 C5 N1 K6 Z6 U2 N8 D7 D7 A5 O7 I3 R1 O8 Y5 Q2 D6 D7 I0 K1 O7 L9 P6 A1 T3 H6 S7 R1 K5 I8 X5 J1 I0 X9 B1 Y5 X8 W1 D6 K5 O7 E4 C1 N1 U2... | B8 M9 L3 S7 M9 E4 M5 P5 K2 L3 O7 K5 N1 E9 N9 I7 G0 I7 K5 A1 W1 E9 M5 C5 N0 Q3 J8 R6 R5 N9 B8 D6 A0 P5 S8 K1 E8 G8 C8 N0 L8 I6 H6 H1 C5 R5 B0 L0 L0 S7 H1 U2 N8 E4 G6 L0 C1 O7 L8 K6 I8 K3 H1 C5 N1 K6 Z6 U2 N8 D7 D7 A5 O7 I3 R1 O8 Y5 Q2 D6 D7 I0 K1 O7 L9 P6 A1 T3 H6 S7 R1 K5 I8 X5 J1 I0 X9 B1 Y5 X8 W1 D6 K5 O7 E4 C1 N1 U2... | 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 | copiale | copiale | substitution | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 274 | 410 | cipher_museum | 0.2 | public | null | null |
noisy-monoalphabetic-ocr_light-013 | RDA NIMY8MFP SFNDAP 1NAPMRAQ LK NMFPQ LB IARRAPQ SMIIAE EFCPMNDQ | RDA NIMY8MFP SFNDAP 1NAPMRAQ LK NMFPQ LB IARRAPQ SMIIAE EFCPMNDQ | THE PLAYFAIR CIPHER OPERATES ON PAIRS OF LETTERS CALLED DIGRAPHS | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "MUSEUM"
} | beginner | en | 55 | 64 | cipher_museum | 0.2 | public | null | null |
kl7-v2-0112 | DQVQJAVCUQJFZGHGLXASTONEFFGPXVJTRHYLJGDCHURHQUWWLNAAEISPKFVYUQFMQYRLIVLNGPMVNBMDUYWLZBRJXVGWYBJIUVBSFJZRYOSKBBGCGAQCKQGQOPTBXPTQAQGNYXWXOKLXKFAMSNSGQRB | DQVQJAVCUQJFZGHGLXASTONEFFGPXVJTRHYLJGDCHURHQUWWLNAAEISPKFVYUQFMQYRLIVLNGPMVNBMDUYWLZBRJXVGWYBJIUVBSFJZRYOSKBBGCGAQCKQGQOPTBXPTQAQGNYXWXOKLXKFAMSNSGQRB | ALL WARFARE IS BASED ON DECEPTION HENCE WHEN ABLE TO ATTACK WE MUST SEEM UNABLE WHEN USING OUR FORCES WE MUST SEEM INACTIVE WHEN WE ARE NEAR WE MUST MAKE THE ENEMY BELIEVE WE ARE FAR AWAY | kl7 | kl7 | machine | {
"type": "seed",
"value": "NATO"
} | expert | en | 151 | 151 | cipher_museum | 2.0 | public | null | null |
diana-156 | STRYXPWQLGBBSMJRYPSRZRTIZXYFAGSRZVQHORQNNPHGNGEVONK | STRYXPWQLGBBSMJRYPSRZRTIZXYFAGSRZVQHORQNNPHGNGEVONK | ALL THE WORLDS A STAGE AND ALL THE MEN AND WOMEN MERELY PLAYERS | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "SECRET"
} | intermediate | en | 51 | 51 | cipher_museum | 0.2 | public | null | null |
joseon-yeokhak-v2-0099 | ITMIQIKBIMABMBKIMAIZZCJQKWVMBZIVAOZMAAWJMTTCUKQDQTMQVKQXQBXMZBWBIUZWUIVIU | ITMIQIKBIMABMBKIMAIZZCJQKWVMBZIVAOZMAAWJMTTCUKQDQTMQVKQXQBXMZBWBIUZWUIVIU | ALEA IACTA EST ET CAESAR RUBICONE TRANSGRESSO BELLUM CIVILE INCIPIT PER TOTAM ROMANAM | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "SEOUL"
} | beginner | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
atbash-v2-0009 | GSV SZIYLI RH XOVZI | GSV SZIYLI RH XOVZI | THE HARBOR IS CLEAR | atbash | atbash | substitution | {
"type": "none",
"value": null
} | beginner | en | 16 | 19 | cipher_museum | 2.0 | public | null | null |
cda-0006331 | BCRA FBHEPR GBBYF NYYBJ VAQRCRAQRAG IREVSVPNGVBA GUR IVTRARER PVCURE HFRF N ERCRNGVAT XRLJBEQ | BCRA FBHEPR GBBYF NYYBJ VAQRCRAQRAG IREVSVPNGVBA GUR IVTRARER PVCURE HFRF N ERCRNGVAT XRLJBEQ | OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION THE VIGENERE CIPHER USES A REPEATING KEYWORD | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 81 | 81 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
columnar-transposition-v2-0195 | PIRPWEMIEOATHDKYYVLNMDIEAOAOOCIRLRNVQLRUNAIDWRAMOGYOEAANONHWNARNTFEDEEEDEUUE | PIRPWEMIEOATHDKYYVLNMDIEAOAOOCIRLRNVQLRUNAIDWRAMOGYOEAANONHWNARNTFEDEEEDEUUE | ONCE UPON A MIDNIGHT DREARY WHILE I PONDERED WEAK AND WEARY OVER MANY A QUAINT VOLUME OF LORE | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "FORTRESS"
} | intermediate | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
trifid-219 | KPQSQGDGICLWUDRUGZPREVYCRSCQFYCGHRZBV+ZSSNT | KPQSQGDGICLWUDRUGZPREVYCRSCQFYCGHRZBV+ZSSNT | FORTUNE FAVORS THE BOLD AND THE BRAVE WHO DARE TO ACT | trifid | trifid | fractionation | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 43 | 43 | cipher_museum | 0.2 | public | null | null |
hill-v2-0364 | HDNYZHJUBKGSHEIOLEWPIAVNBMHRJWTKQWJWNAOHHHUEIPGKGUMYMOFKOKOSNAOHQWJWVWUIFECAEPTLACKAMYMOFKOKEKNATZPHQWJWBGCQBKZUZHKEOSBLGWEIYHOKZUAMTYXGNRQWCQBKJUPQYKDD | HDNYZHJUBKGSHEIOLEWPIAVNBMHRJWTKQWJWNAOHHHUEIPGKGUMYMOFKOKOSNAOHQWJWVWUIFECAEPTLACKAMYMOFKOKEKNATZPHQWJWBGCQBKZUZHKEOSBLGWEIYHOKZUAMTYXGNRQWCQBKJUPQYKDD | ALL WARFARE IS BASED ON DECEPTION HENCE WHEN ABLE TO ATTACK WE MUST SEEM UNABLE WHEN USING OUR FORCES WE MUST SEEM INACTIVE WHEN WE ARE NEAR WE MUST MAKE THE ENEMY BELIEVE WE ARE FAR AWAY | hill | hill | polygraphic | {
"a": 7,
"b": 3,
"c": 4,
"d": 5
} | advanced | en | 152 | 152 | cipher_museum | 2.0 | public | null | null |
cda-0017214 | dal qokal rcheol qokeedy cheol lkaiin aiiin otol otol dainy otedy otain ctaiin qokeedy qokal ypchol daiin lkaiin dainy chor okshy otol daral shaiin cheol ytaiin dainy okeedy qokal chor chor okain shedy qokal kaiiin otol | dal qokal rcheol qokeedy cheol lkaiin aiiin otol otol dainy otedy otain ctaiin qokeedy qokal ypchol daiin lkaiin dainy chor okshy otol daral shaiin cheol ytaiin dainy okeedy qokal chor chor okain shedy qokal kaiiin otol | A STRONG CLAIM NEEDS STRONG EVIDENCE ATBASH ENCODES BY REVERSING THE ALPHABET DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION NEVER | voynich_render | voynich_render | null | {} | hard | en | 184 | 184 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
copiale-v3-0218 | P5 V3 Y0 K2 H3 P5 E0 V7 K2 K2 X4 F7 V6 T4 V7 F5 | P5 V3 Y0 K2 H3 P5 E0 V7 K2 K2 X4 F7 V6 T4 V7 F5 | PER ASPERA AD ASTRA | copiale | copiale | substitution | {
"type": "keyword",
"value": "MYSTERY"
} | advanced | en | 32 | 47 | cipher_museum | 2.0 | public | null | null |
cda-0014766 | 16.45.4 8.38.15 14.24.2 10.28.9 5.48.15 2.8.1 8.36.10 18.20.14 14.5.8 16.21.15 20.6.8 7.12.15 10.9.10 2.32.15 8.17.13 17.45.1 14.32.15 10.8.1 3.10.14 20.45.2 10.27.14 3.18.12 16.19.12 9.16.4 12.28.10 16.49.4 4.8.3 13.49.14 18.23.9 2.31.15 20.38.11 1.17.14 16.44.4 8.28.2 6.49.3 20.25.3 3.19.2 20.49.2 10.42.11 12.32.7 4.... | 16.45.4 8.38.15 14.24.2 10.28.9 5.48.15 2.8.1 8.36.10 18.20.14 14.5.8 16.21.15 20.6.8 7.12.15 10.9.10 2.32.15 8.17.13 17.45.1 14.32.15 10.8.1 3.10.14 20.45.2 10.27.14 3.18.12 16.19.12 9.16.4 12.28.10 16.49.4 4.8.3 13.49.14 18.23.9 2.31.15 20.38.11 1.17.14 16.44.4 8.28.2 6.49.3 20.25.3 3.19.2 20.49.2 10.42.11 12.32.7 4.... | POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE PERHAPS | book_cipher | book_cipher | null | {} | medium | en | 58 | 58 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
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