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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
vic-v2-0449 | 329190898082856863917216858528983863219328590932868628989902908996918980829190969186390191909627132185838082969189655286828590 | 329190898082856863917216858528983863219328590932868628989902908996918980829190969186390191909627132185838082969189655286828590 | DEUTSCHLAND UBER ALLES IN DER WELT WENN ES STETS ZU SCHUTZ UND TRUTZE BRÜDERLICH ZUSAMMENHÄLT | vic | vic | substitution | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 126 | 126 | cipher_museum | 2.0 | public | null | null |
enigma-v2-1035 | PNSATCIMMNSEY | PNSATCIMMNSEY | HONOR ABOVE ALL | enigma | enigma | machine | {
"type": "rotor_start",
"value": "AAB"
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
scytale-v3-0567 | IUEAEALPIOUWWTTRCDTEOORSAIIHSKGAMSNTTNFSUANESASOUBTEANLODINEFNEOXTILWTNISAEIFXRVYLHGNSFMNAX | IUEAEALPIOUWWTTRCDTEOORSAIIHSKGAMSNTTNFSUANESASOUBTEANLODINEFNEOXTILWTNISAEIFXRVYLHGNSFMNAX | IT IS A TRUTH UNIVERSALLY ACKNOWLEDGED THAT A SINGLE MAN IN POSSESSION OF A FORTUNE MUST BE IN WANT OF A WIFE | scytale | scytale | transposition | {
"type": "integer",
"value": 13
} | intermediate | en | 91 | 91 | cipher_museum | 2.0 | public | null | null |
chaocipher-177 | YNWIZKEMFUSMMNPKXVRMJDSBYOSFFRUGWBDALAZHJJHYISTZBXGGVVWPYBRDNAPZDAFQYZIVKDNNYHHBLQEFMRURYYJNOFDUIETQMMACNNDZRFREZDMALZYEVUELCETLGVFOUACGQUNIUWCEATGZFTFOBHH | YNWIZKEMFUSMMNPKXVRMJDSBYOSFFRUGWBDALAZHJJHYISTZBXGGVVWPYBRDNAPZDAFQYZIVKDNNYHHBLQEFMRURYYJNOFDUIETQMMACNNDZRFREZDMALZYEVUELCETLGVFOUACGQUNIUWCEATGZFTFOBHH | IT IS RATHER FOR US TO BE HERE DEDICATED TO THE GREAT TASK REMAINING BEFORE US THAT FROM THESE HONORED DEAD WE TAKE INCREASED DEVOTION TO THAT CAUSE FOR WHICH THEY GAVE THE LAST FULL MEASURE | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 155 | 155 | cipher_museum | 0.2 | public | null | null |
bifid-v2-0193 | CQLIMBDOFNMORTSFRFODSPWWGFCQLFSOGGTIIMSXLUHVAELWUPCHSOKBZWMAYABPVXLNILCNHVDHV | CQLIMBDOFNMORTSFRFODSPWWGFCQLFSOGGTIIMSXLUHVAELWUPCHSOKBZWMAYABPVXLNILCNHVDHV | SUPPLY LINES HAVE BEEN CUT RATIONS FOR THREE DAYS ONLY AWAIT RESUPPLY OR BREAK THROUGH LINES | bifid | bifid | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
chaocipher-059 | EKQJNAFCZPETWSPBGVJVPPDXVZHUYSIKAUNPLCGEKBTHACOUSYLXXYNVQSKIVYHUHXTISFMZBCSKPNQFCNKNVCAOZRPCWRZLYMRTFTDUHVWLJOGFTXCJFKORYITCBBBMDDEANJIWOYGBNSOCRCDD | EKQJNAFCZPETWSPBGVJVPPDXVZHUYSIKAUNPLCGEKBTHACOUSYLXXYNVQSKIVYHUHXTISFMZBCSKPNQFCNKNVCAOZRPCWRZLYMRTFTDUHVWLJOGFTXCJFKORYITCBBBMDDEANJIWOYGBNSOCRCDD | THE ART OF WAR IS OF VITAL IMPORTANCE TO THE STATE IT IS A MATTER OF LIFE AND DEATH A ROAD EITHER TO SAFETY OR TO RUIN HENCE IT IS A SUBJECT OF INQUIRY WHICH CAN ON NO ACCOUNT BE NEGLECTED | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "CHAOCIPHER"
} | advanced | en | 148 | 148 | cipher_museum | 0.2 | public | null | null |
enigma-v3-0788 | BIZIJLQPVPDBGABFUDULRKDDSUBNIIZLBJFZAKROGCSPTFPOYTEYPULVMHSXAUHCCNUIQSQJTV | BIZIJLQPVPDBGABFUDULRKDDSUBNIIZLBJFZAKROGCSPTFPOYTEYPULVMHSXAUHCCNUIQSQJTV | CHARGE OF THE LIGHT BRIGADE INTO THE VALLEY OF DEATH RODE THE SIX HUNDRED BRAVE CAVALIERS | enigma | enigma | machine | {
"type": "rotor_start",
"value": "VWX"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0011110 | RMQAW JBQRT EIAJM GZEIW TVEVL ETZRF LCFHI VQMMQ GOCBJ SRXGD NKOGI ZGOZE GSIHP XXYTP RBYPQ DTBEX XWGVI MZIRI RZRRS ISSLQ LVKTJ BJUTR FEKBR IMFVE JGH | RMQAW JBQRT EIAJM GZEIW TVEVL ETZRF LCFHI VQMMQ GOCBJ SRXGD NKOGI ZGOZE GSIHP XXYTP RBYPQ DTBEX XWGVI MZIRI RZRRS ISSLQ LVKTJ BJUTR FEKBR IMFVE JGH | HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH | autokey | autokey | null | {
"primer": "KEY"
} | hard | en | 123 | 123 | synthetic_educational | null | null | [] | |
cda-0021083 | 50 29 11 82 73 69 76 52 69 50 29 52 50 11 82 29 52 82 77 82 68 61 59 80 82 61 57 82 66 66 82 80 76 80 82 72 59 82 29 52 43 11 50 61 66 80 50 20 59 66 50 69 29 66 36 82 55 68 61 50 61 55 50 82 73 68 77 50 29 68 66 50 69 29 76 50 29 11 61 80 82 65 82 68 66 82 11 66 80 50 25 80 68 77 61 50 29 52 50 65 36 82 80 66 82 73 66 | 50 29 11 82 73 69 76 52 69 50 29 52 50 11 82 29 52 82 77 82 68 61 59 80 82 61 57 82 66 66 82 80 76 80 82 72 59 82 29 52 43 11 50 61 66 80 50 20 59 66 50 69 29 66 36 82 55 68 61 50 61 55 50 82 73 68 77 50 29 68 66 50 69 29 76 50 29 11 61 80 82 65 82 68 66 82 11 66 80 50 25 80 68 77 61 50 29 52 50 65 36 82 80 66 82 73 66 | INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT | wallis_cipher | wallis_cipher | null | {} | hard | en | 107 | 107 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
playfair-v3-0456 | XOEFLHRZKDOCFSEFFRQBKYNDZRKOQMDQDYFUEFXFLHRZKDOCRXLQNFPUEDXFCIKHCUKFLHRZKDOCRKUTDKEV | XOEFLHRZKDOCFSEFFRQBKYNDZRKOQMDQDYFUEFXFLHRZKDOCRXLQNFPUEDXFCIKHCUKFLHRZKDOCRKUTDKEV | ZERO KNOWLEDGE PROOFS ALLOW ONE PARTY TO PROVE KNOWLEDGE WITHOUT REVEALING THE KNOWLEDGE ITSELF | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
caesar-v3-0351 | ZNK KDVKXOSKTZ IUTLOXSY | ZNK KDVKXOSKTZ IUTLOXSY | THE EXPERIMENT CONFIRMS | caesar | caesar | substitution | {
"type": "shift",
"value": 6
} | beginner | en | 21 | 23 | cipher_museum | 2.0 | public | null | null |
solitaire-v2-0011 | LUXYVLXUMKZDBR | LUXYVLXUMKZDBR | TARGET ACQUIRED | solitaire | solitaire | stream | {
"type": "none",
"value": null
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v3-0109 | FWLSHDXFAXTPMLIULR | FWLSHDXFAXTPMLIULR | SOUND THE TRUMPETS | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v2-0088 | LHPTEMCSCENOLUNOANPIESYSRODNVTEAEREWEENEOETTDVFCHDCCAARHOEHPTCURYCSNDHIAEERECTE | LHPTEMCSCENOLUNOANPIESYSRODNVTEAEREWEENEOETTDVFCHDCCAARHOEHPTCURYCSNDHIAEERECTE | CLAUDE SHANNON PROVED THAT THE ONE TIME PAD ACHIEVES PERFECT SECRECY WHEN USED CORRECTLY ONCE | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "PALACE"
} | intermediate | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
solitaire-v3-0179 | XMNJQAZAVNOSBQTYNQIGUBEKIHWWTQWIFRMAMUYEQIQPFRWCLLLVLPVDMHCGXYXEBMSYCXLYQW | XMNJQAZAVNOSBQTYNQIGUBEKIHWWTQWIFRMAMUYEQIQPFRWCLLLVLPVDMHCGXYXEBMSYCXLYQW | THE JOURNEY OF A THOUSAND MILES BEGINS WITH A SINGLE STEP AS LAO TZU WROTE LONG AGO IN CHINA | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "SCHNEIER"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
vic-v3-0166 | 754898948068849083484443818588908349589836551083488190908344688908360809083486462484634888989836557426554808985089 | 754898948068849083484443818588908349589836551083488190908344688908360809083486462484634888989836557426554808985089 | BLESSED ARE THE MEEK FOR THEY SHALL INHERIT THE EARTH AND THE PEACEMAKERS SHALL BE CALLED SONS | vic | vic | substitution | {
"type": "keyword",
"value": "NICKEL"
} | advanced | en | 114 | 114 | cipher_museum | 2.0 | public | null | null |
cda-0021405 | 19 5 3 21 18 9 20 25 3 12 1 9 13 19 19 8 15 21 12 4 2 5 20 5 19 20 5 4 21 14 4 5 18 19 3 18 21 20 9 14 25 | 19 5 3 21 18 9 20 25 3 12 1 9 13 19 19 8 15 21 12 4 2 5 20 5 19 20 5 4 21 14 4 5 18 19 3 18 21 20 9 14 25 | SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY | aeneas_tacticus | aeneas_tacticus | null | {} | medium | en | 41 | 41 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
bacon-cipher-v2-0014 | ABBBA BAAAA AABAA BAAAB BAAAB BAABA AABBB AABAA AAAAA BAABA BAABA AAAAA AAABA ABAAB | ABBBA BAAAA AABAA BAAAB BAAAB BAABA AABBB AABAA AAAAA BAABA BAABA AAAAA AAABA ABAAB | PRESS THE ATTACK | bacon_cipher | bacon_cipher | steganography | {
"type": "none",
"value": null
} | beginner | en | 70 | 83 | cipher_museum | 2.0 | public | null | null |
enigma-v3-0089 | HITYHPLFHWKUFVMOXTWDHGCHZQCRCRHRHZBRWQWXWRVMRCRAGOBXTOYQYBVFSYRKWFUXXLONXBLAPFKTKWB | HITYHPLFHWKUFVMOXTWDHGCHZQCRCRHRHZBRWQWXWRVMRCRAGOBXTOYQYBVFSYRKWFUXXLONXBLAPFKTKWB | RSA ENCRYPTION RELIES ON THE MATHEMATICAL DIFFICULTY OF FACTORING THE PRODUCT OF TWO LARGE PRIMES | enigma | enigma | machine | {
"type": "rotor_start",
"value": "ABC"
} | expert | en | 83 | 83 | cipher_museum | 2.0 | public | null | null |
diana-v2-0129 | LBTZPTHHHRY | LBTZPTHHHRY | HOLD THE LINE | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "SPECIAL"
} | intermediate | en | 11 | 11 | cipher_museum | 2.0 | public | null | null |
great-cipher-086 | 151 173 117 103 118 172 119 177 116 166 107 174 175 117 | 151 173 117 103 118 172 119 177 116 166 107 174 175 117 | FORWARD MARCH NOW | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 42 | 55 | cipher_museum | 0.2 | public | null | null |
columnar-transposition-v2-0536 | LSEBMUUIURNPU | LSEBMUUIURNPU | E PLURIBUS UNUM | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "DRAGON"
} | intermediate | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
cda-0019957 | ILISZJDLGEPUHIGDDPLHGABXZTRZUULLULIEVAAXHKTHCWTFJMOQSJPNWKIGEKRLFAIMWXUPQADFSEWNCTZEBVVPRWYSJXDBYPIBQ | ILISZJDLGEPUHIGDDPLHGABXZTRZUULLULIEVAAXHKTHCWTFJMOQSJPNWKIGEKRLFAIMWXUPQADFSEWNCTZEBVVPRWYSJXDBYPIBQ | THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION | running_key | running_key | null | {} | hard | en | 101 | 101 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
geez-monastic-v2-0335 | UFMNQJIMVCPJXMQULJZMUMQYWPBJDJPWYIMWYAUFMSJPPUVAMCMYAJUWDWJYZUWPPCVMZWYAUFQMWUZ | UFMNQJIMVCPJXMQULJZMUMQYWPBJDJPWYIMWYAUFMSJPPUVAMCMYAJUWDWJYZUWPPCVMZWYAUFQMWUZ | 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": "LALIBELA"
} | advanced | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
zimmermann-v3-0024 | 00000 99999 90022 90008 90013 90003 99998 00006 00010 00096 | 00000 99999 90022 90008 90013 90003 99998 00006 00010 00096 | THE WIND IS WITH US | zimmermann | zimmermann | codebook | {
"type": "none",
"value": null
} | expert | en | 50 | 59 | cipher_museum | 2.0 | public | null | null |
slidex-v3-0211 | XLDSLWFCEWKZFNHFZEDOODUL | XLDSLWFCEWKZFNHFZEDOODUL | ROME WAS NOT BUILT IN ONE DAY | slidex | slidex | transposition | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
gronsfeld-v3-0596 | FPHZIXMZOYYZVLNCITGSCWNGNWBOKBQWSKBXZSJFWLFKYUWZKMRAVCSRUTUWCISYTDTMUWNDLX | FPHZIXMZOYYZVLNCITGSCWNGNWBOKBQWSKBXZSJFWLFKYUWZKMRAVCSRUTUWCISYTDTMUWNDLX | WHAT DOES IT PROFIT A MAN TO GAIN THE WHOLE WORLD AND YET LOSE HIS OWN IMMORTAL SOUL FOREVER | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "98765"
} | intermediate | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
chinese-telegraph-v2-0089 | 1421 0472 0285 0074 0012 0074 0538 0856 0408 1421 0918 0856 1024 0729 0918 1421 1421 0918 0012 1346 1346 0012 1346 1346 0538 0856 0012 1421 0285 1187 1503 0285 0285 0856 0285 0729 0538 1905 0012 0074 0285 1421 0472 1672 0012 1346 1503 0856 0156 0918 1599 0285 1255 0285 0219 0074 1821 0347 1255 0012 0856 0156 0538 1346 ... | 1421 0472 0285 0074 0012 0074 0538 0856 0408 1421 0918 0856 1024 0729 0918 1421 1421 0918 0012 1346 1346 0012 1346 1346 0538 0856 0012 1421 0285 1187 1503 0285 0285 0856 0285 0729 0538 1905 0012 0074 0285 1421 0472 1672 0012 1346 1503 0856 0156 0918 1599 0285 1255 0285 0219 0074 1821 0347 1255 0012 0856 0156 0538 1346 ... | THE BABINGTON PLOT TO ASSASSINATE QUEEN ELIZABETH WAS UNCOVERED BY FRANCIS WALSINGHAM IN TIME | chinese_telegraph | chinese_telegraph | codebook | {
"type": "none",
"value": null
} | expert | en | 320 | 399 | cipher_museum | 2.0 | public | null | null |
cda-0004082 | DBUNE EJCJE AZQKV KFRDX UEKGO QFRSQ ZWUNK SNVFQ F | DBUNE EJCJE AZQKV KFRDX UEKGO QFRSQ ZWUNK SNVFQ F | ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | beaufort | beaufort | null | {
"key": "HONEST"
} | medium | en | 41 | 41 | synthetic_educational | null | null | [
"kasiski_examination",
"friedman_test",
"index_of_coincidence"
] | Beaufort: E(x)=k-x mod 26 — reciprocal cipher (decryption identical to encryption). |
cda-0007942 | PKDEIKNCIXUGWCIHXNCEYOPTAAGPRARWYCSEMKXYOHSAWTERSNXTTXBRFROSNEPFARHNYDEULROEELEEASLLITCRNAH | PKDEIKNCIXUGWCIHXNCEYOPTAAGPRARWYCSEMKXYOHSAWTERSNXTTXBRFROSNEPFARHNYDEULROEELEEASLLITCRNAH | CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL | double_transposition | double_transposition | null | {
"key1": "LIBERTY",
"key2": "PATTERN"
} | hard | en | 91 | 91 | synthetic_educational | null | null | [] | |
diana-118 | GBLOXNLPIDNNXUYDGNYIWTNOLACXQAGBPOMDYNLQGNZUMTEGRPBOXNWXBQGDXCBEZDLPIDARLPIZMYVEETNOKICELKYDVWTEYQXOXNLEBCLKYMBQTOCVMOXNEPIHLOGEEWLKYRLZR | GBLOXNLPIDNNXUYDGNYIWTNOLACXQAGBPOMDYNLQGNZUMTEGRPBOXNWXBQGDXCBEZDLPIDARLPIZMYVEETNOKICELKYDVWTEYQXOXNLEBCLKYMBQTOCVMOXNEPIHLOGEEWLKYRLZR | 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 | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | en | 137 | 137 | cipher_museum | 0.2 | public | null | null |
great-cipher-v3-0055 | 172 125 119 140 168 133 105 173 160 166 167 127 107 102 171 164 143 152 147 141 154 177 128 174 106 127 107 171 164 143 133 105 173 160 167 172 125 119 140 168 147 166 136 107 152 104 172 154 119 161 174 166 118 158 138 112 166 129 150 178 129 | 172 125 119 140 168 133 105 173 160 166 167 127 107 102 171 164 143 152 147 141 154 177 128 174 106 127 107 171 164 143 133 105 173 160 167 172 125 119 140 168 147 166 136 107 152 104 172 154 119 161 174 166 118 158 138 112 166 129 150 178 129 | SCIENCE WITHOUT RELIGION IS LAME AND RELIGION WITHOUT SCIENCE IS BLIND SAID ALBERT EINSTEIN | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "VERSAILLES"
} | expert | en | 183 | 243 | cipher_museum | 2.0 | public | null | null |
kl7-v2-0144 | XKNMYENCSAHIQ | XKNMYENCSAHIQ | AWAIT MY SIGNAL | kl7 | kl7 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
caesar-v2-0550 | EPIB QA QV I VIUM BPIB EPQKP EM KITT I ZWAM JG IVG WBPMZ VIUM EWCTL AUMTT IA AEMMB | EPIB QA QV I VIUM BPIB EPQKP EM KITT I ZWAM JG IVG WBPMZ VIUM EWCTL AUMTT IA AEMMB | WHAT IS IN A NAME THAT WHICH WE CALL A ROSE BY ANY OTHER NAME WOULD SMELL AS SWEET | caesar | caesar | substitution | {
"type": "shift",
"value": 8
} | beginner | en | 64 | 82 | cipher_museum | 2.0 | public | null | null |
cda-0005433 | NGONFU RAPBQRF OL ERIREFVAT GUR NYCUNORG QBHOYR GENAFCBFVGVBA NCCYVRF PBYHZANE RAPELCGVBA GJVPR | NGONFU RAPBQRF OL ERIREFVAT GUR NYCUNORG QBHOYR GENAFCBFVGVBA NCCYVRF PBYHZANE RAPELCGVBA GJVPR | ATBASH ENCODES BY REVERSING THE ALPHABET DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 84 | 84 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
cda-0013934 | 68 88 23 45 70 33 68 49 4 23 63 27 52 93 11 60 94 22 76 34 22 68 93 35 27 30 96 92 14 81 67 58 22 27 80 82 67 39 48 93 46 32 50 23 52 87 26 34 34 23 87 25 39 92 1 70 2 61 61 59 99 33 35 59 63 88 48 3 27 63 63 39 93 33 43 1 30 59 99 48 1 3 61 14 99 21 68 49 26 99 60 26 22 27 87 94 30 22 68 25 48 34 25 17 23 80 82 11 59 ... | 68 88 23 45 70 33 68 49 4 23 63 27 52 93 11 60 94 22 76 34 22 68 93 35 27 30 96 92 14 81 67 58 22 27 80 82 67 39 48 93 46 32 50 23 52 87 26 34 34 23 87 25 39 92 1 70 2 61 61 59 99 33 35 59 63 88 48 3 27 63 63 39 93 33 43 1 30 59 99 48 1 3 61 14 99 21 68 49 26 99 60 26 22 27 87 94 30 22 68 25 48 34 25 17 23 80 82 11 59 ... | THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT | homophonic | homophonic | null | {} | hard | en | 156 | 156 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
slidex-v2-0207 | XFCAWRCUVCLPPXASVHYTWSYAUCUHRXHIUWOCSSUCNAYEQUUKLGHMYVQJYTNXRDQJBNSPCVAVEYOUQWILUP | XFCAWRCUVCLPPXASVHYTWSYAUCUHRXHIUWOCSSUCNAYEQUUKLGHMYVQJYTNXRDQJBNSPCVAVEYOUQWILUP | OBSERVATION EXPERIMENT AND REASON ARE THE THREE PILLARS OF ALL SCIENTIFIC INQUIRY AND PROGRESS | slidex | slidex | transposition | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
cda-0009629 | SVDV XNZB BRYY OVDW UIKF UKAX AGLF VWIW ZVIM SQRR FTDK DXNO AO | SVDV XNZB BRYY OVDW UIKF UKAX AGLF VWIW ZVIM SQRR FTDK DXNO AO | SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER | trithemius | trithemius | null | {} | medium | en | 50 | 50 | synthetic_educational | null | null | [] | |
m209-181 | FKKDCVGKBCIR | FKKDCVGKBCIR | ATTACK AT DAWN | m209 | m209 | machine | {
"type": "seed",
"value": "MUSEUM"
} | expert | en | 12 | 12 | cipher_museum | 0.2 | public | null | null |
cda-0020022 | MA-E / GAH / DZEH / CA-YEILTH / NO-DA-IH / DZEH / TSAH / MOASI / TSAH-AS-ZIH / WOL-LA-CHEE / TSAH / WOL-LA-CHEE / DIBEH-YAZZIE / TSAH-AS-ZIH / DIBEH / TKIN / DIBEH / MOASI / WOL-LA-CHEE / TSAH / GAH / DZEH / A-KEH-DI-GLINI / DZE... | MA-E / GAH / DZEH / CA-YEILTH / NO-DA-IH / DZEH / TSAH / MOASI / TSAH-AS-ZIH / WOL-LA-CHEE / TSAH / WOL-LA-CHEE / DIBEH-YAZZIE / TSAH-AS-ZIH / DIBEH / TKIN / DIBEH / MOASI / WOL-LA-CHEE / TSAH / GAH / DZEH / A-KEH-DI-GLINI / DZE... | FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER | navajo_code | navajo_code | null | {} | hard | en | 230 | 230 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
autokey-fr-010 | DMDVVMPMHECBXILRLBXVSZTX | DMDVVMPMHECBXILRLBXVSZTX | LIBERTE EGALITE FRATERNITE | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "SECRET"
} | intermediate | fr | 24 | 24 | cipher_museum | 0.2 | public | null | null |
confederate-vigenere-v2-0328 | DTICRLBPXVRKBMHWWAMWLOKIXHLOIPOGMWMQBPIRGITIMWNRZXKMOWVGMOAJUWJPMJPZWQPIKLRRE | DTICRLBPXVRKBMHWWAMWLOKIXHLOIPOGMWMQBPIRGITIMWNRZXKMOWVGMOAJUWJPMJPZWQPIKLRRE | ALL UNITS PROCEED TO DESIGNATED RALLY POINTS AND AWAIT FURTHER ORDERS FROM HIGH COMMAND NOW | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "DIXIE"
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v2-0077 | ACXXTGTQVMAPIDMJMMVKCBZIBQWVANWZBPZMMLIGAWVTGIEIQBZMACXXTGWZJZMISBPZWCOPTQVMA | ACXXTGTQVMAPIDMJMMVKCBZIBQWVANWZBPZMMLIGAWVTGIEIQBZMACXXTGWZJZMISBPZWCOPTQVMA | SUPPLY LINES HAVE BEEN CUT RATIONS FOR THREE DAYS ONLY AWAIT RESUPPLY OR BREAK THROUGH LINES | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "SEOUL"
} | beginner | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
red-type-a-v2-0396 | AJIIXLASAWLIW | AJIIXLASAWLIW | AWAIT MY SIGNAL | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "MIKADO"
} | advanced | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
bifid-v3-0374 | XEOFBVFMROFIEQRRDFTDCNFDHPEDLLSFILFSDFSDRLFFPAELKQHPKTLTEOMVEMLIXILPDHCHHLQLEILHQEXEAYOMVZEGEYKUELKQYQEVPKKYIQLEAVUDEEVSUCSGCWNQHCGTWXQUSXGVIVNTCGWSOZQQZZNPRGQDK | XEOFBVFMROFIEQRRDFTDCNFDHPEDLLSFILFSDFSDRLFFPAELKQHPKTLTEOMVEMLIXILPDHCHHLQLEILHQEXEAYOMVZEGEYKUELKQYQEVPKKYIQLEAVUDEEVSUCSGCWNQHCGTWXQUSXGVIVNTCGWSOZQQZZNPRGQDK | WHENEVER ANY FORM OF GOVERNMENT BECOMES DESTRUCTIVE OF THESE ENDS IT IS THE RIGHT OF THE PEOPLE TO ALTER OR TO ABOLISH IT AND TO INSTITUTE NEW GOVERNMENT LAYING ITS FOUNDATION ON SUCH PRINCIPLES | bifid | bifid | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 161 | 161 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v3-0156 | MC QCW JC JLQWEL HQWC WIXW JCCM QHJIW CEM XJL UICSEM PSYQ XQM YXZL XW OECUL CK MXR YXJL YXJL | MC QCW JC JLQWEL HQWC WIXW JCCM QHJIW CEM XJL UICSEM PSYQ XQM YXZL XW OECUL CK MXR YXJL YXJL | DO NOT GO GENTLE INTO THAT GOOD NIGHT OLD AGE SHOULD BURN AND RAVE AT CLOSE OF DAY RAGE RAGE | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "VATSYANA"
} | intermediate | en | 73 | 92 | cipher_museum | 2.0 | public | null | null |
kl7-v3-0151 | YCGQUGEHMYMJYJWYFMTPJDJMRESITPUFABYGEHLFXTMMUWFVSSAJOFLGRPUTHVXHWAMPUNWBOYWGHVNZLNZOEKPW | YCGQUGEHMYMJYJWYFMTPJDJMRESITPUFABYGEHLFXTMMUWFVSSAJOFLGRPUTHVXHWAMPUNWBOYWGHVNZLNZOEKPW | IT IS A TRUTH UNIVERSALLY ACKNOWLEDGED THAT A SINGLE MAN IN POSSESSION OF A FORTUNE MUST BE IN WANT OF A WIFE | kl7 | kl7 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 88 | 88 | cipher_museum | 2.0 | public | null | null |
enigma-v2-0797 | QEDNUBHYTHVSWMEBGLEUYVRZWUWZAFYAPRUYLVXBQQUZFFUWB | QEDNUBHYTHVSWMEBGLEUYVRZWUWZAFYAPRUYLVXBQQUZFFUWB | ALL THAT GLITTERS IS NOT GOLD OFTEN HAVE YOU HEARD THAT TOLD | enigma | enigma | machine | {
"type": "rotor_start",
"value": "STU"
} | expert | en | 49 | 49 | cipher_museum | 2.0 | public | null | null |
cda-0005018 | TSCQWUUZQCSZZ PWEXVJL LZWOPZNHG OIYZLZB GTFUCJJ JMUMOEQSSIPP KYRGU ZNKOMOZT ELLIOO OEMTLE UKSB GST AOLEBBXDX KMYKO | TSCQWUUZQCSZZ PWEXVJL LZWOPZNHG OIYZLZB GTFUCJJ JMUMOEQSSIPP KYRGU ZNKOMOZT ELLIOO OEMTLE UKSB GST AOLEBBXDX KMYKO | TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | trithemius | trithemius | null | {} | hard | en | 101 | 101 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
typex-v3-0394 | AIAJUAAFMLOYXYXQPYVOWGFNUCKFOLUALOXLCEHPHTSKNLAUTJSIZXLCLXDSWISJGMJXFXPCWXTLVJCOWVXMK | AIAJUAAFMLOYXYXQPYVOWGFNUCKFOLUALOXLCEHPHTSKNLAUTJSIZXLCLXDSWISJGMJXFXPCWXTLVJCOWVXMK | CONGRESS SHALL MAKE NO LAW RESPECTING AN ESTABLISHMENT OF RELIGION OR PROHIBITING THE FREE EXERCISE | typex | typex | machine | {
"type": "keyword",
"value": "WINSTON"
} | expert | en | 85 | 85 | cipher_museum | 2.0 | public | null | null |
porta-v2-0147 | SLIJCQCFXZU | SLIJCQCFXZU | KNOW THYSELF | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "RENAISSANCE"
} | intermediate | en | 11 | 11 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-v2-0085 | LHIWPQKBPHTXNWAUEQELMNJGGZSZLXOZHFZGOYCDZPKOIDDQVVDIVQZHZHYUMHINLGITXXUBBOXAKGISH | LHIWPQKBPHTXNWAUEQELMNJGGZSZLXOZHFZGOYCDZPKOIDDQVVDIVQZHZHYUMHINLGITXXUBBOXAKGISH | FREQUENCY ANALYSIS EXPLOITS THE FACT THAT CERTAIN LETTERS APPEAR FAR MORE OFTEN IN ENGLISH TEXT | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "4,2,6,1,3,5"
} | expert | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
double-transposition-v2-0421 | DSSUUORREWVFTNIRSIHAEETETYUSDHHEOTTSWOOEDSLTOSIUBAIFILN | DSSUUORREWVFTNIRSIHAEETETYUSDHHEOTTSWOOEDSLTOSIUBAIFILN | BREVITY IS THE SOUL OF WIT AND TEDIOUSNESS THE OUTWARD FLOURISHES | double_transposition | double_transposition | transposition | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 55 | 55 | cipher_museum | 2.0 | public | null | null |
enigma-v2-1047 | ZNUJNFQLJKJBYVGDSITNQQJC | ZNUJNFQLJKJBYVGDSITNQQJC | TORPEDO AWAY ALL HANDS BRACE | enigma | enigma | machine | {
"type": "rotor_start",
"value": "AAB"
} | expert | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
cda-0006609 | ASHILTSEINHOPRHBOEIFHILSPCRIPISOONAAPBDALCSXELNSRCTRTNIUTIMALDEYRNRUEHFAEEERXPECPOGSLOIXALRSCTUSTGPGSGXNSQREDILOAESRAEEOECKLPEERLTAF | ASHILTSEINHOPRHBOEIFHILSPCRIPISOONAAPBDALCSXELNSRCTRTNIUTIMALDEYRNRUEHFAEEERXPECPOGSLOIXALRSCTUSTGPGSGXNSQREDILOAESRAEEOECKLPEERLTAF | HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS FAIL CLOSED IS A POSTURE NOT A SLOGAN DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS | double_transposition | double_transposition | null | {
"key1": "SECURE",
"key2": "SIGNAL"
} | hard | en | 132 | 132 | synthetic_educational | null | null | [
"key_length_search",
"anagram_recovery"
] | Double columnar transposition: apply columnar twice for stronger security. |
kryha-v3-0167 | WWNZXRZFIIWGBCTHVXDLQJRESEVTHTSBSXCYTWDHPIDOWTUMOXICGBVIKYLISNBBIRPBWBORJGZPF | WWNZXRZFIIWGBCTHVXDLQJRESEVTHTSBSXCYTWDHPIDOWTUMOXICGBVIKYLISNBBIRPBWBORJGZPF | ON D DAY THE ALLIED FORCES LANDED ON FIVE NORMANDY BEACHES IN THE GREATEST SEABORNE INVASION | kryha | kryha | machine | {
"type": "keyword",
"value": "VIENNA"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
caesar-v3-0785 | FA UZRUZUFK MZP NQKAZP FTQ RDAZFUQD AR TGYMZ WZAIXQPSQ OMXXE FA QMOT SQZQDMFUAZ MZQI | FA UZRUZUFK MZP NQKAZP FTQ RDAZFUQD AR TGYMZ WZAIXQPSQ OMXXE FA QMOT SQZQDMFUAZ MZQI | TO INFINITY AND BEYOND THE FRONTIER OF HUMAN KNOWLEDGE CALLS TO EACH GENERATION ANEW | caesar | caesar | substitution | {
"type": "shift",
"value": 12
} | beginner | en | 71 | 84 | cipher_museum | 2.0 | public | null | null |
cda-0013103 | 18.5.5 15.3.10 15.4.9 17.4.4 3.4.2 11.4.6 5.2.6 9.1.7 18.6.8 4.4.7 19.6.9 4.6.3 10.2.10 4.6.7 5.4.10 9.4.1 16.5.1 13.6.2 2.2.2 2.2.10 14.6.7 4.5.4 19.5.6 1.6.7 11.3.2 19.3.5 12.1.9 8.1.3 15.6.9 11.5.5 19.5.7 19.6.6 17.5.8 20.6.8 20.1.6 16.5.6 11.2.7 6.4.6 4.6.4 16.4.6 13.2.8 15.1.7 7.6.3 5.6.8 13.5.2 6.1.3 19.1.1 1.5.7... | 18.5.5 15.3.10 15.4.9 17.4.4 3.4.2 11.4.6 5.2.6 9.1.7 18.6.8 4.4.7 19.6.9 4.6.3 10.2.10 4.6.7 5.4.10 9.4.1 16.5.1 13.6.2 2.2.2 2.2.10 14.6.7 4.5.4 19.5.6 1.6.7 11.3.2 19.3.5 12.1.9 8.1.3 15.6.9 11.5.5 19.5.7 19.6.6 17.5.8 20.6.8 20.1.6 16.5.6 11.2.7 6.4.6 4.6.4 16.4.6 13.2.8 15.1.7 7.6.3 5.6.8 13.5.2 6.1.3 19.1.1 1.5.7... | THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION THE MESSAGE WAS HIDDEN BUT NOT SECURE | arnold_andre | arnold_andre | null | {} | hard | en | 126 | 126 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
chaocipher-v3-0447 | AMIURBXALIIZBAAHFYITR | AMIURBXALIIZBAAHFYITR | SONS OF LIBERTY ASSEMBLE | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
hill-v3-0084 | FWNOLODPLVDVMFVTPDAVQCZGICYBXZKSXFPFDVNBGUIGQVYOUGKFTSWUEPEIEPPVECZICBXQPQ | FWNOLODPLVDVMFVTPDAVQCZGICYBXZKSXFPFDVNBGUIGQVYOUGKFTSWUEPEIEPPVECZICBXQPQ | NO PERSON SHALL BE HELD TO ANSWER FOR A CAPITAL CRIME UNLESS ON PRESENTMENT OF A GRAND JURY | hill | hill | polygraphic | {
"a": 3,
"b": 5,
"c": 2,
"d": 9
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
running-key-089 | ECDOHFJBTEZHEXUM | ECDOHFJBTEZHEXUM | LOCK DOWN ALL GATES | running_key | running_key | polyalphabetic | {
"type": "text",
"value": "Shakespeare paraphrase"
} | intermediate | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
playfair-la-037 | DPUEFXLCYNXFMPYZZNKCCENOLSKCTN | DPUEFXLCYNXFMPYZZNKCCENOLSKCTN | ANNUIT COEPTIS NOVUS ORDO SECLORUM | playfair | playfair | substitution | {
"type": "keyword",
"value": "KEYWORD"
} | intermediate | la | 30 | 30 | cipher_museum | 0.2 | public | null | null |
kryha-v2-0016 | GDOLGJCWIQJCYC | GDOLGJCWIQJCYC | COVER MY RETREAT | kryha | kryha | machine | {
"type": "keyword",
"value": "MUNICH"
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
jn25-v2-0154 | 09991 09903 09919 09906 09999 09995 09993 09997 09902 09992 09999 09906 09909 09902 09993 09907 09907 | 09991 09903 09919 09906 09999 09995 09993 09997 09902 09992 09999 09906 09909 09902 09993 09907 09907 | COURAGE IN DARKNESS | jn25 | jn25 | codebook | {
"type": "additive",
"value": "99999"
} | expert | en | 85 | 101 | cipher_museum | 2.0 | public | null | null |
bazeries-v2-0641 | OYVLSOLAPKXSTY | OYVLSOLAPKXSTY | TARGET ACQUIRED | bazeries | bazeries | transposition | {
"type": "integer",
"value": 67
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
aeneas-tacticus-v2-0033 | 1 14 14 21 9 20 3 15 5 16 20 9 19 | 1 14 14 21 9 20 3 15 5 16 20 9 19 | ANNUIT COEPTIS | aeneas_tacticus | aeneas_tacticus | steganography | {
"type": "none",
"value": null
} | expert | en | 21 | 33 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-v3-0033 | XAGKGAMOFDJA | XAGKGAMOFDJA | YANKEE DOODLE | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "PALACE"
} | expert | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
vic-v3-0304 | 908226858082258389908991808022389 | 908226858082258389908991808022389 | THE ALCHEMIST SUCCEEDS | vic | vic | substitution | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 33 | 33 | cipher_museum | 2.0 | public | null | null |
cda-0003145 | VPTK IKXJ XLZX WVNL DIKI UWBI JCSU XJFE WNEP WEKO LKQZ YJZN MELS M | VPTK IKXJ XLZX WVNL DIKI UWBI JCSU XJFE WNEP WEKO LKQZ YJZN MELS M | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS HONESTLY | autokey | autokey | null | {
"primer": "CIPHER"
} | medium | en | 53 | 53 | synthetic_educational | null | null | [
"running_key_analysis",
"index_of_coincidence"
] | Autokey: Vigenère where the plaintext extends the key — harder to Kasiski-attack. |
fractionated-morse-v2-0326 | ESFAKGGJPWYGMLSAYVUKRAKLPWBJUQUUYGYHVMGNLQUGFUBYEVMGAYAGLAPGTEYDQMAPBTIYTEYDPAQYUVAPBFAKIUW | ESFAKGGJPWYGMLSAYVUKRAKLPWBJUQUUYGYHVMGNLQUGFUBYEVMGAYAGLAPGTEYDQMAPBTIYTEYDPAQYUVAPBFAKIUW | RECONNOITER THE ENEMY POSITION AND REPORT BACK BEFORE NIGHTFALL WITH A FULL STRENGTH COUNT | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 91 | 91 | cipher_museum | 2.0 | public | null | null |
polybius-v2-0006 | 44 23 15 35 11 43 43 24 43 23 15 31 14 | 44 23 15 35 11 43 43 24 43 23 15 31 14 | THE PASS IS HELD | polybius | polybius | substitution | {
"type": "none",
"value": null
} | beginner | en | 26 | 38 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v2-0278 | NMBXCRCOXSZLBZHUG | NMBXCRCOXSZLBZHUG | KEEP YOUR POWDER DRY | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "DIXIE"
} | intermediate | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
homophonic-v2-0030 | 64 54 89 89 50 72 71 10 21 20 72 64 80 58 49 89 45 37 22 | 64 54 89 89 50 72 71 10 21 20 72 64 80 58 49 89 45 37 22 | MISSION ACCOMPLISHED | homophonic | homophonic | substitution | {
"type": "keyword",
"value": "DRAGON"
} | intermediate | en | 38 | 56 | cipher_museum | 2.0 | public | null | null |
cda-0022005 | GSV ORYIZIB KIVHVIEVH PMLDOVWTV ULI GSV XLNNFMRGB YIFGV ULIXV DLIPH LMOB DSVM GSV PVB HKZXV RH HNZOO | GSV ORYIZIB KIVHVIEVH PMLDOVWTV ULI GSV XLNNFMRGB YIFGV ULIXV DLIPH LMOB DSVM GSV PVB HKZXV RH HNZOO | THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL | atbash | atbash | null | {} | hard | en | 84 | 84 | synthetic_educational | null | null | [
"self_inverse_check",
"frequency_analysis"
] | Atbash maps A↔Z, B↔Y, … and is its own inverse. |
copiale-v2-0339 | D3 M1 K2 S9 A6 P9 Y0 D0 J9 J6 E6 W5 X4 V2 O2 G3 E1 C1 W5 V8 S6 G1 J8 Q1 U6 F7 M8 I0 P9 D0 G1 Y8 K5 Q1 R7 I0 N4 U6 I0 D8 W2 I2 P6 Y8 K8 D6 F1 A5 H9 U9 S6 V2 D8 V7 L3 K2 J9 S6 K6 U1 V2 G0 E6 M4 J2 Z2 W4 V4 P3 L3 F7 M4 R0 A3 W5 E3 | D3 M1 K2 S9 A6 P9 Y0 D0 J9 J6 E6 W5 X4 V2 O2 G3 E1 C1 W5 V8 S6 G1 J8 Q1 U6 F7 M8 I0 P9 D0 G1 Y8 K5 Q1 R7 I0 N4 U6 I0 D8 W2 I2 P6 Y8 K8 D6 F1 A5 H9 U9 S6 V2 D8 V7 L3 K2 J9 S6 K6 U1 V2 G0 E6 M4 J2 Z2 W4 V4 P3 L3 F7 M4 R0 A3 W5 E3 | ALAN TURING AND GORDON WELCHMAN BUILT THE BOMBE TO ATTACK THE GERMAN ENIGMA CIPHER MACHINE | copiale | copiale | substitution | {
"type": "keyword",
"value": "MYSTERY"
} | advanced | en | 152 | 227 | cipher_museum | 2.0 | public | null | null |
diana-v3-0400 | IAWZJPYYFUAGIMLVTRWPLSEYPXSNDGRATRHNTIQLCYWBDWEGQYEIANGGHNXRYVGDLZXRGSDVVAWPHNPUWEN | IAWZJPYYFUAGIMLVTRWPLSEYPXSNDGRATRHNTIQLCYWBDWEGQYEIANGGHNXRYVGDLZXRGSDVVAWPHNPUWEN | DIFFIE AND HELLMAN INVENTED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX CHANGING EVERYTHING | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "LIBERTY"
} | intermediate | en | 83 | 83 | cipher_museum | 2.0 | public | null | null |
kl7-090 | CBGWZCFQESC | CBGWZCFQESC | RALLY AT DAWN | kl7 | kl7 | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 11 | 11 | cipher_museum | 0.2 | public | null | null |
nihilist-v2-0356 | 75 26 87 33 47 65 35 47 36 64 64 25 58 45 56 | 75 26 87 33 47 65 35 47 36 64 64 25 58 45 56 | CAVALRY ADVANCES | nihilist | nihilist | fractionation | {
"polybius": "NARODNAYA",
"keyword": "VOLYA"
} | advanced | en | 30 | 44 | cipher_museum | 2.0 | public | null | null |
cda-0014496 | . ... ... . . . .... ... .... ... .. .... . ... . . ... . . ... .. .... ... ..... .. ... . ..... .... .. .... ... .... .... . ..... . . . ... .. ... ..... .. .. ... ..... .... ... .. ... .... . .... . ..... .... .. ... ... .... ... . ..... . ... .... ..... .... .. .. .... .... .... ... | . ... ... . . . .... ... .... ... .. .... . ... . . ... . . ... .. .... ... ..... .. ... . ..... .... .. .... ... .... .... . ..... . . . ... .. ... ..... .. .. ... ..... .... ... .. ... .... . .... . ..... .... .. ... ... .... ... . ..... . ... .... ..... .... .. .. .... .... .... ... | CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING | tap_code | tap_code | null | {} | hard | en | 90 | 90 | 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-0014451 | 14.6.3 5.2.3 9.4.4 7.3.3 16.6.7 11.3.3 11.1.9 7.3.3 8.1.1 12.6.8 2.5.10 10.5.6 11.1.6 10.6.4 4.2.7 20.5.4 16.3.7 1.1.3 19.4.8 11.1.1 16.4.6 14.4.1 13.5.3 14.3.1 16.6.1 13.6.8 14.6.7 17.2.5 8.4.10 4.6.9 5.4.6 19.4.4 15.6.2 5.4.4 6.2.7 10.4.2 5.3.6 7.3.5 3.5.3 14.4.10 20.4.7 3.5.9 18.4.6 9.1.5 8.4.10 14.5.8 13.6.8 14.2.9... | 14.6.3 5.2.3 9.4.4 7.3.3 16.6.7 11.3.3 11.1.9 7.3.3 8.1.1 12.6.8 2.5.10 10.5.6 11.1.6 10.6.4 4.2.7 20.5.4 16.3.7 1.1.3 19.4.8 11.1.1 16.4.6 14.4.1 13.5.3 14.3.1 16.6.1 13.6.8 14.6.7 17.2.5 8.4.10 4.6.9 5.4.6 19.4.4 15.6.2 5.4.4 6.2.7 10.4.2 5.3.6 7.3.5 3.5.3 14.4.10 20.4.7 3.5.9 18.4.6 9.1.5 8.4.10 14.5.8 13.6.8 14.2.9... | BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF | arnold_andre | arnold_andre | null | {} | medium | en | 50 | 50 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
geez-monastic-225 | QOSWEYGKJEKAEMFYKGUQMOKZSQCKOEVSTKSQYKGKOEVPEB | QOSWEYGKJEKAEMFYKGUQMOKZSQCKOEVSTKSQYKGKOEVPEB | I HAVE NOT YET BEGUN TO FIGHT SAID THE CAPTAIN TO THE CREW | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 46 | 46 | cipher_museum | 0.2 | public | null | null |
cda-0006956 | TIGOM GXHZH ZCQFS GLVKD HJSIC CGFHR VYNLK XWXGA WIOYM FUINB YCACN HSZZW CCCSA HZSIY GPUGH OCZSP PLRLY AMYCL EGFDD XUEUD IKCDD TUWVT TNMES OQAQT YEVXR JBZMH NDKGI SILUN KDGES HBVLM YMBOC PUFPF CIOZB ASMGG WDD | TIGOM GXHZH ZCQFS GLVKD HJSIC CGFHR VYNLK XWXGA WIOYM FUINB YCACN HSZZW CCCSA HZSIY GPUGH OCZSP PLRLY AMYCL EGFDD XUEUD IKCDD TUWVT TNMES OQAQT YEVXR JBZMH NDKGI SILUN KDGES HBVLM YMBOC PUFPF CIOZB ASMGG WDD | THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS A STRONG CLAIM NEEDS STRONG EVIDENCE INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | trithemius | trithemius | null | {} | hard | en | 173 | 173 | synthetic_educational | null | null | [] | |
bifid-v2-0321 | TDTPCQQEUYGYFQIBEYYFRENBICILYWEXICLITCOEBRSHLTMYSBFBOEIXHWPCCWSENXSQAKLXXDXNITQ | TDTPCQQEUYGYFQIBEYYFRENBICILYWEXICLITCOEBRSHLTMYSBFBOEIXHWPCCWSENXSQAKLXXDXNITQ | CLAUDE SHANNON PROVED THAT THE ONE TIME PAD ACHIEVES PERFECT SECRECY WHEN USED CORRECTLY ONCE | bifid | bifid | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
lorenz-053 | LETJUSTICEBEDONETHOUGHTHEHEAVENSFALLANDTHESTARSGODARKFOREVER | LETJUSTICEBEDONETHOUGHTHEHEAVENSFALLANDTHESTARSGODARKFOREVER | LET JUSTICE BE DONE THOUGH THE HEAVENS FALL AND THE STARS GO DARK FOREVER | lorenz | lorenz | machine | {
"type": "seed",
"value": "LORENZ"
} | expert | en | 60 | 60 | cipher_museum | 0.2 | public | null | null |
trifid-295 | NAEQDUFAAUFPASAKVTFTRFYFJUQIULGHEYAPFXAJDCEG+LJPCPMKT+AIFFRI | NAEQDUFAAUFPASAKVTFTRFYFJUQIULGHEYAPFXAJDCEG+LJPCPMKT+AIFFRI | EVERY SECRET HAS A KEEPER AND EVERY CODE HAS A BREAKER WHO SEEKS THE TRUTH | trifid | trifid | fractionation | {
"type": "keyword",
"value": "TRIFID"
} | advanced | en | 60 | 60 | cipher_museum | 0.2 | public | null | null |
adfgvx-v3-0520 | GGFFFGAADFFADGDAFAAAGAVADADDGGGFAAADAAAGAFGAFAGDGDAAGGGGFAADGVXADFXGFGVGDXVGVVFDVAVXGFGGDDDVVGVXVFDFGDGGVFVDXDVDDDFVXVAFAFDDDFFAGFAGAFFAADDAGGGFFFAFFDDAAAGFDAAAADFFAFGDFAADADAFGXVGXVVDDXGVVVAXDFDGVADXFVDGGFFVFGFGVVDGXFDFVFXGVGVFGXVXGGGGVGDVDXXGVFDGXDVVGVVXFXDDFGVVVGDVDVDGGDVVVFVGFVDGVXXVDFVVVFDDAFAAGDAAFAAFVAGAGFDVDFDF... | GGFFFGAADFFADGDAFAAAGAVADADDGGGFAAADAAAGAFGAFAGDGDAAGGGGFAADGVXADFXGFGVGDXVGVVFDVAVXGFGGDDDVVGVXVFDFGDGGVFVDXDVDDDFVXVAFAFDDDFFAGFAGAFFAADDAGGGFFFAFFDDAAAGFDAAAADFFAFGDFAADADAFGXVGXVVDDXGVVVAXDFDGVADXFVDGGFFVFGFGVVDGXFDFVFXGVGVFGXVXGGGGVGDVDXXGVFDGXDVVGVVXFXDDFGVVVGDVDVDGGDVVVFVGFVDGVXXVDFVVVFDDAFAAGDAAFAAFVAGAGFDVDFDF... | THE VENONA PROJECT WHICH RAN FROM NINETEEN FORTY THREE TO NINETEEN EIGHTY DECRYPTED THOUSANDS OF SOVIET INTELLIGENCE MESSAGES REVEALING THE IDENTITIES OF NUMEROUS AGENTS WHO HAD PENETRATED THE US GOVERNMENT | adfgvx | adfgvx | fractionation | {
"polybius": "KAISER",
"columnar": "BERLIN"
} | advanced | en | 354 | 354 | cipher_museum | 2.0 | public | null | null |
geez-monastic-154 | AGEUFGDRMRFGBWGAORFAGEUFGDREBJFGBWGAORF | AGEUFGDRMRFGBWGAORFAGEUFGDREBJFGBWGAORF | IT WAS THE BEST OF TIMES IT WAS THE WORST OF TIMES | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 39 | 39 | cipher_museum | 0.2 | public | null | null |
cda-0012554 | 4.5.1 11.5.2 14.5.10 10.1.1 18.4.9 13.1.10 19.6.9 4.1.5 17.6.5 7.1.2 12.4.5 12.3.10 19.2.2 12.5.10 11.1.4 7.5.10 7.5.7 14.5.6 14.5.4 20.2.4 8.5.7 18.1.6 16.2.3 9.5.6 4.5.9 12.5.6 11.3.5 8.3.5 4.6.1 7.2.3 5.4.3 16.2.2 14.5.9 10.6.4 17.2.2 15.2.9 16.5.8 15.1.6 9.6.7 14.1.9 5.4.10 5.4.8 20.4.3 5.5.3 5.5.8 14.1.7 12.6.4 7.... | 4.5.1 11.5.2 14.5.10 10.1.1 18.4.9 13.1.10 19.6.9 4.1.5 17.6.5 7.1.2 12.4.5 12.3.10 19.2.2 12.5.10 11.1.4 7.5.10 7.5.7 14.5.6 14.5.4 20.2.4 8.5.7 18.1.6 16.2.3 9.5.6 4.5.9 12.5.6 11.3.5 8.3.5 4.6.1 7.2.3 5.4.3 16.2.2 14.5.9 10.6.4 17.2.2 15.2.9 16.5.8 15.1.6 9.6.7 14.1.9 5.4.10 5.4.8 20.4.3 5.5.3 5.5.8 14.1.7 12.6.4 7.... | OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | arnold_andre | arnold_andre | null | {} | hard | en | 86 | 86 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
cda-0008296 | VAQRK BSPBV APVQR APRZR NFHER FYRGG RESER DHRAP LQVFG EVOHG VBA | VAQRK BSPBV APVQR APRZR NFHER FYRGG RESER DHRAP LQVFG EVOHG VBA | INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | rot13 | rot13 | null | {
"shift": 13
} | medium | en | 53 | 53 | synthetic_educational | null | null | [] | |
cda-0010154 | JUFPKBCUTPXF UZOTUSY PTKIZEJZ TES JTUZLRQ KXIEWIEC KXZ VZYYTCZ OTY XISSZE DRK EBK YZJRUZ SB EBK JBELRYZ BDLRYJTKIBE OIKX ZEJUFPKIBE | JUFPKBCUTPXF UZOTUSY PTKIZEJZ TES JTUZLRQ KXIEWIEC KXZ VZYYTCZ OTY XISSZE DRK EBK YZJRUZ SB EBK JBELRYZ BDLRYJTKIBE OIKX ZEJUFPKIBE | CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING THE MESSAGE WAS HIDDEN BUT NOT SECURE DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION | monoalphabetic | monoalphabetic | null | {
"alphabet": "TDJSZLCXIGWQVEBPAUYKRMOHFN"
} | hard | en | 113 | 113 | synthetic_educational | null | null | [] | |
lorenz-118 | CRYPTANALYSISISTHEARTOFBREAKMNGCODESWITHOUTTHEKEYANDITHASBEENPRACTICEDFORASLONGESTHEREHAVEBEENCODESTOBREAKTHEHISTORYOFCRYPTOLOGYISEBATTLEOFWITS | CRYPTANALYSISISTHEARTOFBREAKMNGCODESWITHOUTTHEKEYANDITHASBEENPRACTICEDFORASLONGESTHEREHAVEBEENCODESTOBREAKTHEHISTORYOFCRYPTOLOGYISEBATTLEOFWITS | CRYPTANALYSIS IS THE ART OF BREAKING CODES WITHOUT THE KEY AND IT HAS BEEN PRACTICED FOR AS LONG AS THERE HAVE BEEN CODES TO BREAK THE HISTORY OF CRYPTOLOGY IS A BATTLE OF WITS | lorenz | lorenz | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 143 | 143 | cipher_museum | 0.2 | public | null | null |
cda-0018537 | - .... . / .--. .-.. .- -.-- ..-. .- .. .-. / -.-. .. .--. .... . .-. / . -. -.-. .-. -.-- .--. - ... / .--. .- .. .-. ... / --- ..-. / .-.. . - - . .-. ... / ... .. -- ..- .-.. - .- -. . --- ..- ... .-.. -.-- | - .... . / .--. .-.. .- -.-- ..-. .- .. .-. / -.-. .. .--. .... . .-. / . -. -.-. .-. -.-- .--. - ... / .--. .- .. .-. ... / --- ..-. / .-.. . - - . .-. ... / ... .. -- ..- .-.. - .- -. . --- ..- ... .-.. -.-- | THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY | morse_code | morse_code | null | {} | medium | en | 53 | 53 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
rail-fence-fr-038 | ARCYFESAOUAMSIOESOMZOBTILNXETNRVALS | ARCYFESAOUAMSIOESOMZOBTILNXETNRVALS | AUX ARMES CITOYENS FORMEZ VOS BATAILLONS | rail_fence | rail_fence | transposition | {
"type": "shift",
"value": 3
} | intermediate | fr | 35 | 35 | cipher_museum | 0.2 | public | null | null |
copiale-048 | K6 V1 K9 N7 H8 C7 Y4 Y3 T3 F9 K0 N5 H5 D6 Y3 E4 H4 O4 C5 T4 V1 V5 Y4 X8 D6 U4 E4 W7 G9 U8 P3 I3 D6 D6 A0 O1 V9 P3 B2 C6 D0 K0 R3 V1 C5 W8 O2 R3 D5 S5 H4 V6 T5 O1 K1 U7 | K6 V1 K9 N7 H8 C7 Y4 Y3 T3 F9 K0 N5 H5 D6 Y3 E4 H4 O4 C5 T4 V1 V5 Y4 X8 D6 U4 E4 W7 G9 U8 P3 I3 D6 D6 A0 O1 V9 P3 B2 C6 D0 K0 R3 V1 C5 W8 O2 R3 D5 S5 H4 V6 T5 O1 K1 U7 | IF YOU KNOW BOTH YOURSELF AND YOUR ENEMY YOU NEED NOT FEAR THE RESULT | copiale | copiale | substitution | {
"type": "keyword",
"value": "COPIALE"
} | advanced | en | 112 | 167 | cipher_museum | 0.2 | public | null | null |
purple-024 | XOAARMLBCS | XOAARMLBCS | TRUST NO ONE | purple | purple | machine | {
"type": "seed",
"value": "PURPLE"
} | expert | en | 10 | 10 | cipher_museum | 0.2 | public | null | null |
cda-0018254 | OKYMI FPQIM SPAVG UMKWG IMTFD WXKWY EOEZR ONOMI GADOY BMJKC WLJMM SZRGG DBDSS FJYLC RFGNV UACYF HILLA WSGMY LRWCE BLBPP ZJDWE HFAQC BHBFR VIBAJ HYDDU ZZTQJ NEAQJ UKXSU GWMBD JNJMG YNXKQ FD | OKYMI FPQIM SPAVG UMKWG IMTFD WXKWY EOEZR ONOMI GADOY BMJKC WLJMM SZRGG DBDSS FJYLC RFGNV UACYF HILLA WSGMY LRWCE BLBPP ZJDWE HFAQC BHBFR VIBAJ HYDDU ZZTQJ NEAQJ UKXSU GWMBD JNJMG YNXKQ FD | HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE | one_time_pad | one_time_pad | null | {} | hard | en | 157 | 157 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
bifid-v3-0290 | PSDHPQPTNZTEQVES | PSDHPQPTNZTEQVES | SOUND THE TRUMPETS | bifid | bifid | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
chaocipher-v3-0026 | DCOJAZZVHIVPSCXRLP | DCOJAZZVHIVPSCXRLP | TREASURE BURIED HERE | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
cda-0020574 | 61 82 52 59 80 50 66 43 52 57 68 50 77 61 61 36 69 59 57 11 20 82 66 82 61 66 82 11 59 29 11 82 80 61 52 80 59 66 50 29 43 66 36 82 82 29 50 25 77 68 77 68 52 36 50 29 82 59 61 82 11 80 69 66 69 80 61 66 69 52 80 82 68 66 82 68 65 69 57 43 68 57 65 36 68 20 82 66 50 52 52 50 65 36 82 80 52 82 80 66 68 50 29 57 43 | 61 82 52 59 80 50 66 43 52 57 68 50 77 61 61 36 69 59 57 11 20 82 66 82 61 66 82 11 59 29 11 82 80 61 52 80 59 66 50 29 43 66 36 82 82 29 50 25 77 68 77 68 52 36 50 29 82 59 61 82 11 80 69 66 69 80 61 66 69 52 80 82 68 66 82 68 65 69 57 43 68 57 65 36 68 20 82 66 50 52 52 50 65 36 82 80 52 82 80 66 68 50 29 57 43 | SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER CERTAINLY | wallis_cipher | wallis_cipher | null | {} | hard | en | 105 | 105 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
argenti-v3-0150 | 37 82 83 70 28 84 66 17 67 64 56 23 63 67 75 | 37 82 83 70 28 84 66 17 67 64 56 23 63 67 75 | THE FACTORY ROARS | argenti | argenti | nomenclator | {
"type": "seed",
"value": "PAPAL"
} | expert | en | 30 | 44 | cipher_museum | 2.0 | public | null | null |
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