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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
cda-0017185 | qokal okal okal shal chedal cheol chol okain otaiin otaiin qotedy shor ykcheol | qokal okal okal shal chedal cheol chol okain otaiin otaiin qotedy shor ykcheol | ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | voynich_render | voynich_render | null | {} | medium | en | 66 | 66 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
adfgx-v3-0103 | AADXFGAGGFGGAXDXDGAGFAGGDXAAAADG | AADXFGAGGFGGAXDXDGAGFAGGDXAAAADG | THE SENATE DECREES | adfgx | adfgx | fractionation | {
"polybius": "LIBERTY",
"columnar": "FREEDOM"
} | advanced | en | 32 | 32 | cipher_museum | 2.0 | public | null | null |
cda-0006064 | OEHGR SBEPR JBEXF BAYL JURA GUR XRL FCNPR VF FZNYY BCRA FBHEPR GBBYF NYYBJ VAQRCRAQRAG IREVSVPNGVBA TEBAFSRYQ HFRF N QVTVG FRDHRAPR NF GUR ERCRNGVAT XRL GUR ORFG YRFFBAF FUBJ JURER GUR ZRGUBQ SNVYF ARIRE | OEHGR SBEPR JBEXF BAYL JURA GUR XRL FCNPR VF FZNYY BCRA FBHEPR GBBYF NYYBJ VAQRCRAQRAG IREVSVPNGVBA TEBAFSRYQ HFRF N QVTVG FRDHRAPR NF GUR ERCRNGVAT XRL GUR ORFG YRFFBAF FUBJ JURER GUR ZRGUBQ SNVYF ARIRE | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY THE BEST LESSONS SHOW WHERE THE METHOD FAILS NEVER | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 170 | 170 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
m94-v3-0080 | VOAOTJJSGGRORLVEAEVFQBDHPPFQWQCOALBCTCFLJUUGTVLDLXNDLSYTQRPUSHBPVPXDPMXYARWVKPOQYY | VOAOTJJSGGRORLVEAEVFQBDHPPFQWQCOALBCTCFLJUUGTVLDLXNDLSYTQRPUSHBPVPXDPMXYARWVKPOQYY | HUMINT OR HUMAN INTELLIGENCE GATHERING RELIES ON PERSONAL CONTACT AND HUMAN SOURCES IN THE FIELD | m94 | m94 | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
cda-0015401 | IZFEG NDYGV QGVCD WAPYN HPTXI VKXMW CCTCX LTXON VLKTD UNTVV UPXSP TMCJV PJLWV TOEEP YSHOX IKWHD SYASG JLBWD JKTSY DXAXH VLLKE TXMHA YUCWW HLBGI RESMK JPIEF OOVPX AATJX G | IZFEG NDYGV QGVCD WAPYN HPTXI VKXMW CCTCX LTXON VLKTD UNTVV UPXSP TMCJV PJLWV TOEEP YSHOX IKWHD SYASG JLBWD JKTSY DXAXH VLLKE TXMHA YUCWW HLBGI RESMK JPIEF OOVPX AATJX G | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS | running_key | running_key | null | {} | hard | en | 141 | 141 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
cda-0015788 | 19 21 2 19 20 9 20 21 20 9 15 14 3 9 16 8 5 18 19 13 1 16 5 1 3 8 12 5 20 20 5 18 20 15 1 4 9 6 6 5 18 5 14 20 12 5 20 20 5 18 1 13 15 4 5 12 3 1 14 3 12 1 19 19 9 6 25 16 1 20 20 5 18 14 19 2 21 20 9 20 3 1 14 1 12 19 15 2 5 23 18 15 14 7 20 8 5 1 21 20 15 11 5 25 3 9 16 8 5 18 5 24 20 5 14 4 19 20 8 5 11 5 25 23 9 20... | 19 21 2 19 20 9 20 21 20 9 15 14 3 9 16 8 5 18 19 13 1 16 5 1 3 8 12 5 20 20 5 18 20 15 1 4 9 6 6 5 18 5 14 20 12 5 20 20 5 18 1 13 15 4 5 12 3 1 14 3 12 1 19 19 9 6 25 16 1 20 20 5 18 14 19 2 21 20 9 20 3 1 14 1 12 19 15 2 5 23 18 15 14 7 20 8 5 1 21 20 15 11 5 25 3 9 16 8 5 18 5 24 20 5 14 4 19 20 8 5 11 5 25 23 9 20... | SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 193 | 193 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
nomenclator-045 | 09 08 01 22 05 14 15 20 25 05 20 02 05 07 21 14 63 06 09 07 08 20 19 01 09 04 60 03 01 16 20 01 09 14 63 60 03 18 05 23 | 09 08 01 22 05 14 15 20 25 05 20 02 05 07 21 14 63 06 09 07 08 20 19 01 09 04 60 03 01 16 20 01 09 14 63 60 03 18 05 23 | I HAVE NOT YET BEGUN TO FIGHT SAID THE CAPTAIN TO THE CREW | nomenclator | nomenclator | nomenclator | {
"type": "none",
"value": null
} | expert | en | 80 | 119 | cipher_museum | 0.2 | public | null | null |
typex-v2-0486 | YOBZLEWJTJMVCBLXXBUVAZYJORRONUBTNPYSNJTRIHGLWLPILYAHLKMPCNHEIPFMBMCVCQFDQNGLXWUNGOLWGPPIFWEZHDSVERCUUFATELGGVQIQBYFOLWXRTTYRLTHWWSCLHBNXEQSYOSQ | YOBZLEWJTJMVCBLXXBUVAZYJORRONUBTNPYSNJTRIHGLWLPILYAHLKMPCNHEIPFMBMCVCQFDQNGLXWUNGOLWGPPIFWEZHDSVERCUUFATELGGVQIQBYFOLWXRTTYRLTHWWSCLHBNXEQSYOSQ | WITH MALICE TOWARD NONE WITH CHARITY FOR ALL WITH FIRMNESS IN THE RIGHT AS GOD GIVES US TO SEE THE RIGHT LET US STRIVE ON TO FINISH THE WORK WE ARE IN TO BIND UP THE NATIONS WOUNDS | typex | typex | machine | {
"type": "keyword",
"value": "WINSTON"
} | expert | en | 143 | 143 | cipher_museum | 2.0 | public | null | null |
typex-v2-0181 | DAFXXJDZUKQVHJYDBNPQPPFGPSPHQTDQUMBJVTODUPEKQFCLLYWJQZSEOVQPGSOROKSVCEWFCMK | DAFXXJDZUKQVHJYDBNPQPPFGPSPHQTDQUMBJVTODUPEKQFCLLYWJQZSEOVQPGSOROKSVCEWFCMK | ARMY OF NORTHERN VIRGINIA SURRENDERS AT APPOMATTOX COURTHOUSE THE WAR IN THE EAST IS OVER | typex | typex | machine | {
"type": "keyword",
"value": "BRITAIN"
} | expert | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
double-transposition-v3-0074 | TIETRHSEHSOSOONTTHOIUUDYOGNOTNOSUIDIELHREEMLTLVASOODUEWNYLAGUUDEHOAFLLOR | TIETRHSEHSOSOONTTHOIUUDYOGNOTNOSUIDIELHREEMLTLVASOODUEWNYLAGUUDEHOAFLLOR | DO UNTO OTHERS AS YOU WOULD HAVE THEM DO UNTO YOU THIS IS THE GOLDEN RULE OF ALL RELIGIONS | double_transposition | double_transposition | transposition | {
"key1": "PALACE",
"key2": "BATTLE"
} | advanced | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
cda-0021773 | OVEJR CONVH MYDYM KNJXB XCTFE ADRUP FJPKE WPPYU OAFXF RZEDK SINXF BSHZP SSNFB IMCCR JIRGW | OVEJR CONVH MYDYM KNJXB XCTFE ADRUP FJPKE WPPYU OAFXF RZEDK SINXF BSHZP SSNFB IMCCR JIRGW | FAIL CLOSED IS A POSTURE NOT A SLOGAN A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES | one_time_pad | one_time_pad | null | {} | medium | en | 75 | 75 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
fialka-v3-0350 | JQKIGQSKCADMRMDWPOI | JQKIGQSKCADMRMDWPOI | MEASURE TWICE CUT ONCE | fialka | fialka | machine | {
"type": "seed",
"value": "SPUTNIK"
} | expert | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
trifid-v3-0451 | T+NU+RBXRAGXS | T+NU+RBXRAGXS | THE APPLE FALLS | trifid | trifid | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
bazeries-v2-0486 | FHAQBVJQYRBGJITMFVAQBVYIQBMFARGFMJNXNAQBVGPYIHMBYAQIBPFQAEBMBETJEPQPSPYUAQYYPJQAEBMYPPSQYGJYUBMQIBNJQIYAQAPBYVDMJVQIBYMFSTIBOJFIYAQKVPIJBQPTISJ | FHAQBVJQYRBGJITMFVAQBVYIQBMFARGFMJNXNAQBVGPYIHMBYAQIBPFQAEBMBETJEPQPSPYUAQYYPJQAEBMYPPSQYGJYUBMQIBNJQIYAQAPBYVDMJVQIBYMFSTIBOJFIYAQKVPIJBQPTISJ | WITH MALICE TOWARD NONE WITH CHARITY FOR ALL WITH FIRMNESS IN THE RIGHT AS GOD GIVES US TO SEE THE RIGHT LET US STRIVE ON TO FINISH THE WORK WE ARE IN TO BIND UP THE NATIONS WOUNDS | bazeries | bazeries | transposition | {
"type": "integer",
"value": 41
} | advanced | en | 143 | 143 | cipher_museum | 2.0 | public | null | null |
copiale-v3-0217 | Y2 V3 S9 E1 S6 V7 N1 K6 V0 L0 J8 F7 U2 O4 F9 G3 | Y2 V3 S9 E1 S6 V7 N1 K6 V0 L0 J8 F7 U2 O4 F9 G3 | RENDER UNTO CAESAR | copiale | copiale | substitution | {
"type": "keyword",
"value": "MYSTERY"
} | advanced | en | 32 | 47 | cipher_museum | 2.0 | public | null | null |
enigma-v3-0826 | MUORSIQVVPDUSPVCGWZSGQKDEVLTGMMDRMNZABPQHCSGXUMTARHNCHCYIJAWEKHVCHWXSYSXXRNQUGVYOMFVYIWEKCTZQDXYBXWUMIMUVOKFCBYDGSTHHUYLOBNSKZQHSQJRXRWRLWHZOGGORYZEYEAUIVPLTXYJ | MUORSIQVVPDUSPVCGWZSGQKDEVLTGMMDRMNZABPQHCSGXUMTARHNCHCYIJAWEKHVCHWXSYSXXRNQUGVYOMFVYIWEKCTZQDXYBXWUMIMUVOKFCBYDGSTHHUYLOBNSKZQHSQJRXRWRLWHZOGGORYZEYEAUIVPLTXYJ | 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 | enigma | enigma | machine | {
"type": "rotor_start",
"value": "VWX"
} | expert | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
nihilist-v2-0367 | 75 28 87 45 25 93 35 48 45 57 65 38 47 66 | 75 28 87 45 25 93 35 48 45 57 65 38 47 66 | COVER MY RETREAT | nihilist | nihilist | fractionation | {
"polybius": "NARODNAYA",
"keyword": "VOLYA"
} | advanced | en | 28 | 41 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-v3-0029 | SIIOUSOEDDEXVYVNHPKD | SIIOUSOEDDEXVYVNHPKD | THE REDCOATS ARE COMING | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "4,2,6,1,3,5"
} | expert | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
cda-0018313 | BRUT EFOR CEWO RKXO NLYZ HENT HEKE YSPA CEIS SMAZ LOBS XRVA BXEE VIZE NCEC OMES BEFO RXCO NFID ENCE | BRUT EFOR CEWO RKXO NLYZ HENT HEKE YSPA CEIS SMAZ LOBS XRVA BXEE VIZE NCEC OMES BEFO RXCO NFID ENCE | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE | commercial_code | commercial_code | null | {} | hard | en | 80 | 80 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
monoalphabetic-v2-1230 | RBO ZCHHOPHWJJ ROGOAPWH VWQ DOSKDOD IY PKKH MKPRY CJ GKJDKJ WJD IPKTABR WHOPCSW CJRK RBO APOWR VWP | RBO ZCHHOPHWJJ ROGOAPWH VWQ DOSKDOD IY PKKH MKPRY CJ GKJDKJ WJD IPKTABR WHOPCSW CJRK RBO APOWR VWP | THE ZIMMERMANN TELEGRAM WAS DECODED BY ROOM FORTY IN LONDON AND BROUGHT AMERICA INTO THE GREAT WAR | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "WISDOM"
} | beginner | en | 82 | 98 | cipher_museum | 2.0 | public | null | null |
trifid-v3-0403 | QMRPKHHKOTDGERYFSCVOITVCNGEBMVZDSYWEDIJPHHKOTDVRGXUXOBHEFDWNJPLFKGCMPVUOS+SMQC+WHF | QMRPKHHKOTDGERYFSCVOITVCNGEBMVZDSYWEDIJPHHKOTDVRGXUXOBHEFDWNJPLFKGCMPVUOS+SMQC+WHF | ZERO KNOWLEDGE PROOFS ALLOW ONE PARTY TO PROVE KNOWLEDGE WITHOUT REVEALING THE KNOWLEDGE ITSELF | trifid | trifid | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v3-0339 | YRHGNOAUCCZAPADXWXEJ | YRHGNOAUCCZAPADXWXEJ | THE COMPASS POINTS TRUE | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 10
} | expert | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v2-0252 | NMVOQDRRGTGVRHUHLVKAQRFWRBGZUBBUUMTAATBUDIOVDSCHINGJFIALFVGZFOOOZAJQGGGLTMKUEIEHUWOLEHVFKZCUCIVOZBAWDCILUMHVDHUHTWOTABQHWMPZQDERDWVLFVRJVVGYMZJHCNCYQOAGJMEBDSGKVJNLEGVQXAQMXWOHIBA | NMVOQDRRGTGVRHUHLVKAQRFWRBGZUBBUUMTAATBUDIOVDSCHINGJFIALFVGZFOOOZAJQGGGLTMKUEIEHUWOLEHVFKZCUCIVOZBAWDCILUMHVDHUHTWOTABQHWMPZQDERDWVLFVRJVVGYMZJHCNCYQOAGJMEBDSGKVJNLEGVQXAQMXWOHIBA | 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 | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "RICHMOND"
} | intermediate | en | 179 | 179 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-066 | RGFQGIHDSHALNARH | RGFQGIHDSHALNARH | PROCEED AS PLANNED | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
playfair-v3-0490 | UMFOSYULAIPGOPVO | UMFOSYULAIPGOPVO | CHART THE UNKNOWN | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
beaufort-v3-0404 | LTNOGHYAWPNUDZDMMUUIRUWWXBBZZHQXMGFDIEXMQZPAADJGATNNMKGCWWYNLMZPMGGKBKDLDQGBJFAGAOHOPEKTMNKHFNZAHEDYYXLBKDOVTVNRUMYUKDYAWTJHGXWXOXMJRQWYUKSRNINJSNJFTJPZQGOTNJKFRQAYTAH | LTNOGHYAWPNUDZDMMUUIRUWWXBBZZHQXMGFDIEXMQZPAADJGATNNMKGCWWYNLMZPMGGKBKDLDQGBJFAGAOHOPEKTMNKHFNZAHEDYYXLBKDOVTVNRUMYUKDYAWTJHGXWXOXMJRQWYUKSRNINJSNJFTJPZQGOTNJKFRQAYTAH | 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 | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "HARBOUR"
} | intermediate | en | 167 | 167 | cipher_museum | 2.0 | public | null | null |
four-square-v3-0103 | PCBUBNEPEOBOSRBU | PCBUBNEPEOBOSRBU | THE SENATE DECREES | four_square | four_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
hill-v2-0630 | UMWVLFIAQHIAIBLIZBPHBXVBFRUUXDXJTAKZNBXJCYSQRCVYUHYSJILOLPUUBMSFMCAHOAZAIYXDYGRCXYOSVBQAATNNCCRTPHXTVAVETATCKZLIMWMGLPTAPEPMLFVASQNGWVKMFVRPHDUMGVZHSIWPCEEARCWVVNDQSWXDQYNBPKXWKZVH | UMWVLFIAQHIAIBLIZBPHBXVBFRUUXDXJTAKZNBXJCYSQRCVYUHYSJILOLPUUBMSFMCAHOAZAIYXDYGRCXYOSVBQAATNNCCRTPHXTVAVETATCKZLIMWMGLPTAPEPMLFVASQNGWVKMFVRPHDUMGVZHSIWPCEEARCWVVNDQSWXDQYNBPKXWKZVH | 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 | hill | hill | polygraphic | {
"a": 11,
"b": 3,
"c": 2,
"d": 5
} | advanced | en | 180 | 180 | cipher_museum | 2.0 | public | null | null |
kl7-044 | UDMPJPMNPWBXHCPYRWEZWLKDJNRKBDMZBBVOLXGSZZXWCBEWJZJDJMKUJ | UDMPJPMNPWBXHCPYRWEZWLKDJNRKBDMZBBVOLXGSZZXWCBEWJZJDJMKUJ | ELEMENTARY MY DEAR WATSON THE GAME IS AFOOT AND THE CRIMINAL IS CLOSE | kl7 | kl7 | machine | {
"type": "seed",
"value": "TSEC"
} | expert | en | 57 | 57 | cipher_museum | 0.2 | public | null | null |
babington-020 | ⟨w13⟩ ⟨w15⟩ ⟨w16⟩ ⟨a07⟩ ⟨a16⟩ ⟨a15⟩ ⟨w06⟩ ⟨a07⟩ ⟨w15⟩ ⟨w13⟩ ⟨a11⟩ ⟨a05⟩ ⟨a13⟩ ⟨w16⟩ ⟨a23⟩ ⟨a07⟩ ⟨a10⟩ ⟨a15⟩ | ⟨w13⟩ ⟨w15⟩ ⟨w16⟩ ⟨a07⟩ ⟨a16⟩ ⟨a15⟩ ⟨w06⟩ ⟨a07⟩ ⟨w15⟩ ⟨w13⟩ ⟨a11⟩ ⟨a05⟩ ⟨a13⟩ ⟨w16⟩ ⟨a23⟩ ⟨a07⟩ ⟨a10⟩ ⟨a15⟩ | SILENCE IS GOLDEN | babington | babington | nomenclator | {
"type": "seed",
"value": "BABINGTON"
} | expert | en | 90 | 107 | cipher_museum | 0.2 | public | null | null |
adfgvx-v3-0373 | GAFGGFDXDGGAVGFFDDAXGADAFFVFXAFDAGAAAAFADFFFDDAXVFAXAFDDAFFFAXDXDDDDDAADAGFDGVDDAAAFAXGDFDGAGDADAADDVAXDDGGGAVGFDFDDDADAAFGFDDDADDGFGVAAAFGVAFAAAVGFDXAF | GAFGGFDXDGGAVGFFDDAXGADAFFVFXAFDAGAAAAFADFFFDDAXVFAXAFDDAFFFAXDXDDDDDAADAGFDGVDDAAAFAXGDFDGAGDADAADDVAXDDGGGAVGFDFDDDADAAFGFDDDADDGFGVAAAFGVAFAAAVGFDXAF | AT THE BATTLE OF MIDWAY AMERICAN DIVE BOMBERS DESTROYED FOUR JAPANESE CARRIERS IN MINUTES | adfgvx | adfgvx | fractionation | {
"polybius": "DRAGON",
"columnar": "THUNDER"
} | advanced | en | 152 | 152 | cipher_museum | 2.0 | public | null | null |
autokey-v2-0085 | URPQWISTCQHEYAQIFEINDWAXPISSNTUMALFTEXKAABPPVMTMEDEIIIRJFPGQOIJOWFSEMBJGKYQFLGKIB | URPQWISTCQHEYAQIFEINDWAXPISSNTUMALFTEXKAABPPVMTMEDEIIIRJFPGQOIJOWFSEMBJGKYQFLGKIB | FREQUENCY ANALYSIS EXPLOITS THE FACT THAT CERTAIN LETTERS APPEAR FAR MORE OFTEN IN ENGLISH TEXT | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "PALACE"
} | intermediate | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
bazeries-v2-0542 | FQHHGRGIJHPPFAQFPHOLIO | FQHHGRGIJHPPFAQFPHOLIO | FLEET ASSEMBLES AT HARBOR | bazeries | bazeries | transposition | {
"type": "integer",
"value": 53
} | advanced | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
cda-0019111 | CLAGI AIHWO LLACH EETHA NZIET HANZI EDZEH GAHTS AHGLO EIHAK HAGAH BEDIB EHLIN DZEHD IBEHY AZZIE CLAGI AIHSH USHGA HDZEH WOLLA CHEEK LIZZI ENAAS TSOSI AKHAT SAHAK HAWOL LACHE EDIBE HYAZZ IECLA GIAIH LINWO LLACH EESHU SHDZE HTHAN ZIETK INMOA SIDIB EHNOD AIHSH USHDI BEHTH ANZIE | CLAGI AIHWO LLACH EETHA NZIET HANZI EDZEH GAHTS AHGLO EIHAK HAGAH BEDIB EHLIN DZEHD IBEHY AZZIE CLAGI AIHSH USHGA HDZEH WOLLA CHEEK LIZZI ENAAS TSOSI AKHAT SAHAK HAWOL LACHE EDIBE HYAZZ IECLA GIAIH LINWO LLACH EESHU SHDZE HTHAN ZIETK INMOA SIDIB EHNOD AIHSH USHDI BEHTH ANZIE | PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS | 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. |
nihilist-138 | 45 67 26 93 36 25 44 60 33 55 28 42 62 67 64 | 45 67 26 93 36 25 44 60 33 55 28 42 62 67 64 | FORWARD MARCH NOW | nihilist | nihilist | fractionation | {
"polybius": "SECRET",
"keyword": "AGENTS"
} | advanced | en | 30 | 44 | cipher_museum | 0.2 | public | null | null |
cda-0014862 | QBCE OGRB QUCS MFBU IIJD TOWM PSWE LUFD UYJQ SUXN I | QBCE OGRB QUCS MFBU IIJD TOWM PSWE LUFD UYJQ SUXN I | ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | vernam | vernam | null | {} | medium | en | 41 | 41 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
four-square-v3-0016 | APLFAUTRNSHTVAIISX | APLFAUTRNSHTVAIISX | ARCHERS TO THE WALLS | four_square | four_square | polygraphic | {
"key1": "PALACE",
"key2": "BATTLE"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
wallis-cipher-v3-0099 | 90 24 42 37 63 81 55 56 43 91 90 59 54 60 33 56 26 54 82 91 90 10 61 87 55 91 90 10 23 56 91 90 49 34 54 68 81 76 28 85 56 21 91 90 52 33 31 54 91 90 28 24 91 90 34 89 55 91 90 45 42 53 10 61 91 90 60 33 79 28 85 22 91 90 87 34 82 91 90 55 23 81 10 91 90 13 33 43 21 89 40 91 90 84 56 39 28 85 24 91 90 45 33 55 61 91 90... | 90 24 42 37 63 81 55 56 43 91 90 59 54 60 33 56 26 54 82 91 90 10 61 87 55 91 90 10 23 56 91 90 49 34 54 68 81 76 28 85 56 21 91 90 52 33 31 54 91 90 28 24 91 90 34 89 55 91 90 45 42 53 10 61 91 90 60 33 79 28 85 22 91 90 87 34 82 91 90 55 23 81 10 91 90 13 33 43 21 89 40 91 90 84 56 39 28 85 24 91 90 45 33 55 61 91 90... | SOCRATES BELIEVED THAT THE UNEXAMINED LIFE IS NOT WORTH LIVING AND THAT WISDOM BEGINS WITH THE ADMISSION OF ONES OWN IGNORANCE THIS APPROACH TO KNOWLEDGE HAS GUIDED WESTERN PHILOSOPHY FOR TWO MILLENNIA | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "OXFORD"
} | expert | en | 468 | 701 | cipher_museum | 2.0 | public | null | null |
adfgx-v2-0276 | DAFAFFDAXADFGDDFGXDFDAAAGFFGGDGDAAGFDGFAXGFFAXAAXDDDDDFFAGDFFGFAFDXDADAAGDFDGAAFAGXADFAAGGDGDG | DAFAFFDAXADFGDDFGXDFDAAAGFFGGDGDAAGFDGFAXGFFAXAAXDDDDDFFAGDFFGFAFDXDADAAGDFDGAAFAGXADFAAGGDGDG | THE COURSE OF TRUE LOVE NEVER DID RUN SMOOTH THROUGH AGES | adfgx | adfgx | fractionation | {
"polybius": "TRIUMPH",
"columnar": "JUSTICE"
} | advanced | en | 94 | 94 | cipher_museum | 2.0 | public | null | null |
cda-0021896 | YVZFULIG RH GSV IVXRKILXZO LU ERTVMVIV ZMW WVXIBKGH RGHVOU | YVZFULIG RH GSV IVXRKILXZO LU ERTVMVIV ZMW WVXIBKGH RGHVOU | BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF | atbash | atbash | null | {} | medium | en | 50 | 50 | synthetic_educational | null | null | [
"self_inverse_check",
"frequency_analysis"
] | Atbash maps A↔Z, B↔Y, … and is its own inverse. |
cda-0017892 | EARLY VITAL EIGHT ROADS YEARS SCOUT YEARS SCOUT TURNS EARLY MARCH NOTES ENTER EXACT DRAFT STAGE ALERT NAVAL HOURS OUTER NORTH EXACT STAGE TURNS TRACK | EARLY VITAL EIGHT ROADS YEARS SCOUT YEARS SCOUT TURNS EARLY MARCH NOTES ENTER EXACT DRAFT STAGE ALERT NAVAL HOURS OUTER NORTH EXACT STAGE TURNS TRACK | EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | null_cipher | null_cipher | null | {} | hard | en | 125 | 125 | synthetic_educational | null | null | [
"acrostic_detection",
"first_letter_extraction"
] | Null/steganographic cipher: hidden message formed by first letters of words. |
cda-0013766 | LSWKK RMHWT XAPNQ CNUJV HGWZZ SELGE QIMAZ YZEHM EHWMJ RJVWW GBZTK YNTVA OELUK SXOAF VGNKD JDTAZ YUNQY JDMXN AODHJ RXMSD DKDGV ZCQEG WMAKQ WHJXC XHWSS ELZYA SUKSL ZXLYT ZQKLP XGVOC ZTLTA I | LSWKK RMHWT XAPNQ CNUJV HGWZZ SELGE QIMAZ YZEHM EHWMJ RJVWW GBZTK YNTVA OELUK SXOAF VGNKD JDTAZ YUNQY JDMXN AODHJ RXMSD DKDGV ZCQEG WMAKQ WHJXC XHWSS ELZYA SUKSL ZXLYT ZQKLP XGVOC ZTLTA I | DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX THE VIGENERE CIPHER USES A REPEATING KEYWORD HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS | one_time_pad | one_time_pad | null | {} | hard | en | 156 | 156 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
cda-0016748 | 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 66 36 82 69 29 82 66 50 77 82 65 68 11 50 61 66 36 82 69 80 82 66 50 52 68 57 57 43 59 29 20 80 82 68 55 68 20 57 82 50 76 59 61 82 11 52 69 80 80 82 52 66... | 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 66 36 82 69 29 82 66 50 77 82 65 68 11 50 61 66 36 82 69 80 82 66 50 52 68 57 57 43 59 29 20 80 82 68 55 68 20 57 82 50 76 59 61 82 11 52 69 80 80 82 52 66... | THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS | wallis_cipher | wallis_cipher | null | {} | hard | en | 208 | 208 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
rail-fence-v2-0631 | THEDIEISCAST | THEDIEISCAST | THE DIE IS CAST | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 12
} | intermediate | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
vigenere-v2-0387 | PHVYIFSKRZJKZVWR | PHVYIFSKRZJKZVWR | THE HARBOR IS CLEAR | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "WARRIOR"
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
vigenere-v3-0701 | IYOHRKOPMHMFBETHFXBNZDURYPBFCNQSIMOIVDIEIQXVBWJQQWVIXNTBGAWRTBETVDTBAFIPCRGWVDBFTEMPTUQI | IYOHRKOPMHMFBETHFXBNZDURYPBFCNQSIMOIVDIEIQXVBWJQQWVIXNTBGAWRTBETVDTBAFIPCRGWVDBFTEMPTUQI | TRADECRAFT IS THE ART OF CONDUCTING COVERT OPERATIONS WITHOUT ALERTING THE OPPOSITION TO YOUR PRESENCE | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "PHOENIX"
} | intermediate | en | 88 | 88 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-v2-0221 | DKQIZCQMEFGVPUXH | DKQIZCQMEFGVPUXH | THE HARBOR IS CLEAR | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "1,3,5,2,4,6"
} | expert | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v3-1145 | QAM JNTIEM ATO OKJDMG | QAM JNTIEM ATO OKJDMG | THE ORACLE HAS SPOKEN | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "TRIUMPH"
} | beginner | en | 18 | 21 | cipher_museum | 2.0 | public | null | null |
bifid-v2-0383 | DLECTLBDWBXZV | DLECTLBDWBXZV | E PLURIBUS UNUM | bifid | bifid | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v3-0079 | IIIONLTTDSLNMTNTESIERONSCCNOAENINSCNAOTCINLLCGVIEALFROCSGNGRTVEIAIEIUISSLEIONPNYEOMA | IIIONLTTDSLNMTNTESIERONSCCNOAENINSCNAOTCINLLCGVIEALFROCSGNGRTVEIAIEIUISSLEIONPNYEOMA | SIGNALS INTELLIGENCE OR SIGINT INVOLVES INTERCEPTION AND ANALYSIS OF ELECTRONIC COMMUNICATIONS | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "PALACE"
} | intermediate | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
jn25-v3-0130 | 09908 09906 09993 09999 09907 09919 09906 09993 09990 09919 09906 09997 09993 09992 09996 09993 09906 09993 | 09908 09906 09993 09999 09907 09919 09906 09993 09990 09919 09906 09997 09993 09992 09996 09993 09906 09993 | TREASURE BURIED HERE | jn25 | jn25 | codebook | {
"type": "additive",
"value": "99999"
} | expert | en | 90 | 107 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-vf-0066 | ULDEEEHNGNHTWTTOTWEDEOHTABNTIALLORIIDTNNEWTELPOEHDALKRLNIBSTSNESOOHHUHIXFRTIHLE | ULDEEEHNGNHTWTTOTWEDEOHTABNTIALLORIIDTNNEWTELPOEHDALKRLNIBSTSNESOOHHUHIXFRTIHLE | THE TRUTH WILL OUT AND THE LIE WILL BE EXPOSED FOR THERE IS NOTHING HIDDEN THAT SHALL NOT BE KNOWN | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "ENIGMA"
} | intermediate | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
cda-0004581 | TIUH NSEC EIIF NDUD ELEN CXCL OEUF IECS XOAX | TIUH NSEC EIIF NDUD ELEN CXCL OEUF IECS XOAX | THE INDEX OF COINCIDENCE IS A USEFUL CLUE | scytale | scytale | null | {
"cols": 12
} | medium | en | 36 | 36 | synthetic_educational | null | null | [
"column_count_search",
"anagram_recovery"
] | Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter. |
jn25-v2-0326 | 21242 21239 21237 21249 21248 21248 21249 21233 21244 21239 21242 21244 21232 21239 21239 21248 21239 21247 21259 21240 21249 21243 21233 21244 21233 21249 21248 21235 21248 21238 21242 21239 21240 21249 21242 21244 21236 21235 21237 21245 21236 21239 21230 21249 21242 21239 21248 21233 21231 21232 21244 21230 21235 21... | 21242 21239 21237 21249 21248 21248 21249 21233 21244 21239 21242 21244 21232 21239 21239 21248 21239 21247 21259 21240 21249 21243 21233 21244 21233 21249 21248 21235 21248 21238 21242 21239 21240 21249 21242 21244 21236 21235 21237 21245 21236 21239 21230 21249 21242 21239 21248 21233 21231 21232 21244 21230 21235 21... | RECONNOITER THE ENEMY POSITION AND REPORT BACK BEFORE NIGHTFALL WITH A FULL STRENGTH COUNT | jn25 | jn25 | codebook | {
"type": "additive",
"value": "11235"
} | expert | en | 385 | 461 | cipher_museum | 2.0 | public | null | null |
four-square-v3-0334 | EQVHPUROBBEPGILTDNYBHUISNKAFGQFUDIKNCSZHUHTPTRECIASBBQUNALATTGSPSBADEQXY | EQVHPUROBBEPGILTDNYBHUISNKAFGQFUDIKNCSZHUHTPTRECIASBBQUNALATTGSPSBADEQXY | IT WAS A BRIGHT COLD DAY IN APRIL AND THE CLOCKS WERE STRIKING THIRTEEN ACROSS THE CITY | four_square | four_square | polygraphic | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
cda-0017841 | 14 34 33 34 44 13 34 33 21 45 43 15 34 12 21 45 43 13 11 44 24 34 33 52 24 44 23 15 33 13 42 54 35 44 24 34 33 35 34 31 54 11 31 35 23 11 12 15 44 24 13 13 24 35 23 15 42 43 45 43 15 32 45 31 44 24 35 31 15 11 31 35 23 11 12 15 44 43 23 24 21 44 43 44 23 15 12 15 43 44 31 15 43 43 34 33 43 43 23 34 52 52 23 15 42 15 44... | 14 34 33 34 44 13 34 33 21 45 43 15 34 12 21 45 43 13 11 44 24 34 33 52 24 44 23 15 33 13 42 54 35 44 24 34 33 35 34 31 54 11 31 35 23 11 12 15 44 24 13 13 24 35 23 15 42 43 45 43 15 32 45 31 44 24 35 31 15 11 31 35 23 11 12 15 44 43 23 24 21 44 43 44 23 15 12 15 43 44 31 15 43 43 34 33 43 43 23 34 52 52 23 15 42 15 44... | DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS THE BEST LESSONS SHOW WHERE THE METHOD FAILS THE INDEX OF COINCIDENCE IS A USEFUL CLUE | polybius | polybius | null | {} | hard | en | 154 | 154 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
columnar-transposition-458 | TRDVRXTOYAGEAPMHNYRROTETGHTEEEAEEFHELEESABAGD | TRDVRXTOYAGEAPMHNYRROTETGHTEEEAEEFHELEESABAGD | THE REPORTS OF MY DEATH HAVE BEEN GREATLY EXAGGERATED | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "CRYPTIC"
} | intermediate | en | 45 | 45 | cipher_museum | 0.2 | public | null | null |
purple-112 | RSMINJHKEEKTEGGHOYJOOCDFASHRXVLCIUXVPDTWRSEBDHEVUJLCQRIFGO | RSMINJHKEEKTEGGHOYJOOCDFASHRXVLCIUXVPDTWRSEBDHEVUJLCQRIFGO | IN THE BEGINNING WAS THE WORD AND THE WORD WAS WITH GOD AND FULL OF GRACE | purple | purple | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 58 | 58 | cipher_museum | 0.2 | public | null | null |
trifid-v2-0053 | COVUO+LSOAXCCUHXC+IMOMIERWBUDUCZCCQXZDEPGRHPKFGBBKSGQUIOPEXVUB+ONLJPFNOJL+R | COVUO+LSOAXCCUHXC+IMOMIERWBUDUCZCCQXZDEPGRHPKFGBBKSGQUIOPEXVUB+ONLJPFNOJL+R | ENEMY FORCES REPORTED MOVING TOWARD GETTYSBURG CAVALRY HAS CONFIRMED THE FULL SIGHTING | trifid | trifid | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
enigma-371 | XCIUCPZZUMVJD | XCIUCPZZUMVJD | CHANGE OF PLANS | enigma | enigma | machine | {
"type": "rotor_start",
"value": "KEY"
} | expert | en | 13 | 13 | cipher_museum | 0.2 | public | null | null |
cda-0011545 | SVDVXNZBBRYY OVDWUIK FUK AXAG LFVWIW ZV I MSQRRFTDK DXNOAO RGE MKEVFXF XAODQEJTI BFHQGAAED FPT WLJ IVUVEYUGM UHZWWGVJ BQSINCWII QLG UOYSGV UHFE LNVPFQSIDU FEJYHZ BRTRGSS JYW TFKDXZDT CA WLWKL XXCTFVCCI | SVDVXNZBBRYY OVDWUIK FUK AXAG LFVWIW ZV I MSQRRFTDK DXNOAO RGE MKEVFXF XAODQEJTI BFHQGAAED FPT WLJ IVUVEYUGM UHZWWGVJ BQSINCWII QLG UOYSGV UHFE LNVPFQSIDU FEJYHZ BRTRGSS JYW TFKDXZDT CA WLWKL XXCTFVCCI | SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS | trithemius | trithemius | null | {} | hard | en | 173 | 173 | synthetic_educational | null | null | [] | |
m209-v3-0326 | RPHWKLXBANEHCMXCYZ | RPHWKLXBANEHCMXCYZ | LOWER THE DRAWBRIDGE | m209 | m209 | machine | {
"type": "seed",
"value": "VICTORY"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
argenti-029 | 10 85 51 15 64 59 50 14 66 73 10 62 40 68 83 46 | 10 85 51 15 64 59 50 14 66 73 10 62 40 68 83 46 | LOCK DOWN ALL GATES | argenti | argenti | nomenclator | {
"type": "seed",
"value": "ARGENTI"
} | expert | en | 32 | 47 | cipher_museum | 0.2 | public | null | null |
confederate-vigenere-v2-0048 | MLYVOIOHVCPSNUAEYXEEPENEOQSGMETIFVPQWIPRKSZCUCHTVKEOANPJWLKIQAGUAEYX | MLYVOIOHVCPSNUAEYXEEPENEOQSGMETIFVPQWIPRKSZCUCHTVKEOANPJWLKIQAGUAEYX | ALL THE WORLDS A STAGE AND EACH MAN IN HIS TIME PLAYS MANY PARTS ON LIFES GREAT STAGE | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "MANCHESTER"
} | intermediate | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
rail-fence-v3-0502 | ARACLUATTETLTLSEJTNPAIDSBOOENZEAUEIRRETRSQTSODIESUCONINCNAENRNUIELTSOTETZPOBHIR | ARACLUATTETLTLSEJTNPAIDSBOOENZEAUEIRRETRSQTSODIESUCONINCNAENRNUIELTSOTETZPOBHIR | ALL PERSONS BORN OR NATURALIZED IN THE UNITED STATES ARE CITIZENS SUBJECT TO EQUAL PROTECTION | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 11
} | intermediate | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
solitaire-v2-0311 | RRSAFQBJVPVJJCBZKBLBSMHQJHXMBKZDKRJVDXFSTANQYDZZPPJXCPUNFKUCSHCUVSDOLSBT | RRSAFQBJVPVJJCBZKBLBSMHQJHXMBKZDKRJVDXFSTANQYDZZPPJXCPUNFKUCSHCUVSDOLSBT | WE SHALL FIGHT ON THE BEACHES AND WE SHALL FIGHT ON THE LANDING GROUNDS AND IN THE FIELDS | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "PONTIFEX"
} | expert | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
diana-v3-0084 | EMYCNZDNVZEGGZJZAGOHZGRZVWWBQARYNRWYRPLPWFNGAVAZZMARNNZWANSNEHZBELAAADVXAC | EMYCNZDNVZEGGZJZAGOHZGRZVWWBQARYNRWYRPLPWFNGAVAZZMARNNZWANSNEHZBELAAADVXAC | NO PERSON SHALL BE HELD TO ANSWER FOR A CAPITAL CRIME UNLESS ON PRESENTMENT OF A GRAND JURY | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "RANGER"
} | intermediate | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-043 | DFQJAXWGDHMOTLISFYHIKEPIYDYYNDISSEBRUHEZYIYUCYV | DFQJAXWGDHMOTLISFYHIKEPIYDYYNDISSEBRUHEZYIYUCYV | THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG NEAR THE RIVER | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "3,1,5,2,4,6"
} | expert | en | 47 | 47 | cipher_museum | 0.2 | public | null | null |
enigma-v2-0808 | HLIHIBNYVGLSZGEGYFOZXZMUTYKNSMKNJYMSAXHKRCEPRREMTBZQSMGWEOWROBVWXNAPIDGG | HLIHIBNYVGLSZGEGYFOZXZMUTYKNSMKNJYMSAXHKRCEPRREMTBZQSMGWEOWROBVWXNAPIDGG | GENERAL GRANT HAS TAKEN VICKSBURG THE GREAT RIVER IS NOW OPEN FROM ITS SOURCE TO THE SEA | enigma | enigma | machine | {
"type": "rotor_start",
"value": "STU"
} | expert | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
cda-0008871 | IEEDACERECLRARACESCPAREAEIVCFHRROKTAOPSIERAGDEEGIOTPRNACDHUFHUYBFNIATNSBWIEECRSERIETROLRUTTIDTLTATCEOMANTPTSIERYPOTETIIRPIHULSNPIERAYHTHECLEEWRTTADTNRHCTEPONNASTOIERITENHSIRCERPRNM | IEEDACERECLRARACESCPAREAEIVCFHRROKTAOPSIERAGDEEGIOTPRNACDHUFHUYBFNIATNSBWIEECRSERIETROLRUTTIDTLTATCEOMANTPTSIERYPOTETIIRPIHULSNPIERAYHTHECLEEWRTTADTNRHCTEPONNASTOIERITENHSIRCERPRNM | HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER | double_transposition | double_transposition | null | {
"key1": "CIPHER",
"key2": "PALACE"
} | hard | en | 180 | 180 | synthetic_educational | null | null | [] | |
solitaire-v3-0229 | OUEIWNDXVWUFMTAKIHHOWJVYUF | OUEIWNDXVWUFMTAKIHHOWJVYUF | THE PRINTING PRESS CHANGES ALL | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "PONTIFEX"
} | expert | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-064 | QELHEZVMUS CT KDHLDABT | QELHEZVMUS CT KDHLDABT | RENDEZVOUS AT MIDNIGHT | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "CIPHER"
} | beginner | en | 20 | 22 | cipher_museum | 0.2 | public | null | null |
kryha-v2-0196 | XBCFJLQYAIPMYIJAYXRTYXVFOOAHAEJCAXPXWAWWCANBLYQCXLFKDAULHMUNWJRDIDPMPQV | XBCFJLQYAIPMYIJAYXRTYXVFOOAHAEJCAXPXWAWWCANBLYQCXLFKDAULHMUNWJRDIDPMPQV | QUOTH THE RAVEN NEVERMORE THE BIRD SAT ON THE BUST OF PALLAS JUST ABOVE MY CHAMBER DOOR | kryha | kryha | machine | {
"type": "keyword",
"value": "VIENNA"
} | expert | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
vic-v3-0320 | 908226878785206858589 | 908226878785206858589 | THE APPLE FALLS | vic | vic | substitution | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
vic-193 | 892840170289385848001 | 892840170289385848001 | SILENCE IS GOLDEN | vic | vic | substitution | {
"type": "keyword",
"value": "ENIGMA"
} | advanced | en | 21 | 21 | cipher_museum | 0.2 | public | null | null |
typex-v2-0307 | TCTZVEBLDBLWQQYKLXFANWMJFJCLNUPFNLRFUZRGPQFBHVQIRNFILJIRWGJCSYVUJRSAFCBEHIM | TCTZVEBLDBLWQQYKLXFANWMJFJCLNUPFNLRFUZRGPQFBHVQIRNFILJIRWGJCSYVUJRSAFCBEHIM | ARMY OF NORTHERN VIRGINIA SURRENDERS AT APPOMATTOX COURTHOUSE THE WAR IN THE EAST IS OVER | typex | typex | machine | {
"type": "keyword",
"value": "EMPIRE"
} | expert | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
adfgx-v2-0376 | GDDXXGGXGGGFDDADGXAGGFGDAGXD | GDDXXGGXGGGFDDADGXAGGFGDAGXD | TRUST BUT VERIFY | adfgx | adfgx | fractionation | {
"polybius": "DRAGON",
"columnar": "THUNDER"
} | advanced | en | 28 | 28 | cipher_museum | 2.0 | public | null | null |
cda-0012413 | ZQLH OJEU WPFG XNGS OLGX TTUJ WZER LYSQ GYXE SQUI WCXI DTTK KCUQ PZGX WCLB QIZA HIPI HHTT OJKD KFPU QYAR UEAZ JZKH RBAD BYEY QHSD E | ZQLH OJEU WPFG XNGS OLGX TTUJ WZER LYSQ GYXE SQUI WCXI DTTK KCUQ PZGX WCLB QIZA HIPI HHTT OJKD KFPU QYAR UEAZ JZKH RBAD BYEY QHSD E | SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS | vernam | vernam | null | {} | hard | en | 105 | 105 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
joseon-yeokhak-142 | YUYGRDSPRFCPMPBCPQ | YUYGRDSPRFCPMPBCPQ | AWAIT FURTHER ORDERS | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "KOREA"
} | beginner | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
jefferson-disk-v2-0193 | DPZTGPCUKDXTLRMHSMRJIORKJHKQOJMDSIQRBYDYGMDDSKRQHFIDQYJHKYBJTYZBPVSZVPXWSUKY | DPZTGPCUKDXTLRMHSMRJIORKJHKQOJMDSIQRBYDYGMDDSKRQHFIDQYJHKYBJTYZBPVSZVPXWSUKY | ALAN TURING AND GORDON WELCHMAN BUILT THE BOMBE TO ATTACK THE GERMAN ENIGMA CIPHER MACHINE | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "6,1,4,2,5,3"
} | expert | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
sigaba-v2-0272 | CZZYIVESJYDWBLFGKMWMZX | CZZYIVESJYDWBLFGKMWMZX | EXTRACTION POINT CHANGED | sigaba | sigaba | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
typex-v2-0088 | HRCZQQVELCWNYZWYEPQAEWJIAGWDCKLUYUBLIXKVPTQIKBGKNUOYTXUJIRCYSFGJZQIAUYSIRWQNVGH | HRCZQQVELCWNYZWYEPQAEWJIAGWDCKLUYUBLIXKVPTQIKBGKNUOYTXUJIRCYSFGJZQIAUYSIRWQNVGH | CLAUDE SHANNON PROVED THAT THE ONE TIME PAD ACHIEVES PERFECT SECRECY WHEN USED CORRECTLY ONCE | typex | typex | machine | {
"type": "keyword",
"value": "LONDON"
} | expert | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
vic-v2-0465 | 6090216869186288918392480685294872183286802409082283862008380832868095409082289917898389908386810232168581492218652869095491612806858523918748690432858372169024866862938048689908390919083486041908229186839023899069028940652183806 | 6090216869186288918392480685294872183286802409082283862008380832868095409082289917898389908386810232168581492218652869095491612806858523918748690432858372169024866862938048689908390919083486041908229186839023899069028940652183806 | AFTER AN UNEQUIVOCAL EXPERIENCE OF THE INEFFICIENCY OF THE SUBSISTING FEDERAL GOVERNMENT YOU ARE CALLED UPON TO DELIBERATE ON A NEW CONSTITUTION FOR THE UNITED STATES OF AMERICA | vic | vic | substitution | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 229 | 229 | cipher_museum | 2.0 | public | null | null |
gronsfeld-211 | XKIWLEZIMSFZSCTIYUWBFYFTFFBJLEOZUPAUGMTMFTBZEDXFITFJFYUBR | XKIWLEZIMSFZSCTIYUWBFYFTFFBJLEOZUPAUGMTMFTBZEDXFITFJFYUBR | WE HOLD THESE TRUTHS TO BE SELF EVIDENT THAT ALL MEN ARE CREATED EQUAL | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "16180"
} | intermediate | en | 57 | 57 | cipher_museum | 0.2 | public | null | null |
confederate-vigenere-v2-0406 | UHIEECETYVTFXRASD | UHIEECETYVTFXRASD | COURAGE IN DARKNESS | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "STONEWALL"
} | intermediate | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
red-type-a-v3-0125 | MTOPGOKNOPCCQUGCFCITTYQYMS | MTOPGOKNOPCCQUGCFCITTYQYMS | THE PRINTING PRESS CHANGES ALL | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "YAMATO"
} | advanced | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-058 | ITQFTQDFTQDQRADQKQQMFADPDUZWADITMFEAQHQDKQPAPAMXXFAFTQSXADKARSAPRADFTQQMDFTUEFTQXADPEMZPFTQRGXXZQEEFTQDQARFTQIADXPMZPFTQKFTMFPIQXXFTQDQUZ | ITQFTQDFTQDQRADQKQQMFADPDUZWADITMFEAQHQDKQPAPAMXXFAFTQSXADKARSAPRADFTQQMDFTUEFTQXADPEMZPFTQRGXXZQEEFTQDQARFTQIADXPMZPFTQKFTMFPIQXXFTQDQUZ | 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 | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "YEOKHAK"
} | beginner | en | 137 | 137 | cipher_museum | 0.2 | public | null | null |
bazeries-v3-0153 | TUPBMWTOPARBNFJEBXTNMKTIITFBYAPNEJFEYUODPOYMBDBMAPRIYPMBETIYOOJMEYAPXPB | TUPBMWTOPARBNFJEBXTNMKTIITFBYAPNEJFEYUODPOYMBDBMAPRIYPMBETIYOOJMEYAPXPB | IT WAS A BRIGHT COLD DAY IN APRIL AND THE CLOCKS WERE STRIKING THIRTEEN ACROSS THE CITY | bazeries | bazeries | transposition | {
"type": "integer",
"value": 23
} | advanced | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
vernam-v3-0071 | BMGVWJJHZNDSQZSTAWGKNCAVQGAMNLRMKYQCDSQROGJYSGXODBNDADGPEPKYABRLXYPTSRDEYYOLLR | BMGVWJJHZNDSQZSTAWGKNCAVQGAMNLRMKYQCDSQROGJYSGXODBNDADGPEPKYABRLXYPTSRDEYYOLLR | BLESSED ARE THE MEEK FOR THEY SHALL INHERIT THE EARTH AND THE PEACEMAKERS SHALL BE CALLED SONS | vernam | vernam | stream | {
"type": "pad",
"value": "ABCDEFGH (repeating)"
} | expert | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
adfgvx-v3-0076 | VDVDGDDGVGGVXDAFVAFDDAFXVGGAGFGAFDDDAFAVAAGFFGGAFADGVXVDDDDVFGAADAVVDXFFGGAFDFDFGAGGAFDDGGDGFFAGFGDDGADAFDFAFGAFAFDFDFAFDAFGAAADDFFFVGVFFVGGGVGDGDVX | VDVDGDDGVGGVXDAFVAFDDAFXVGGAGFGAFDDDAFAVAAGFFGGAFADGVXVDDDDVFGAADAVVDXFFGGAFDFDFGAGGAFDDGGDGFFAGFGDDGADAFDFAFGAFAFDFDFAFDAFGAAADDFFFVGVFFVGGGVGDGDVX | WHAT DOES IT PROFIT A MAN TO GAIN THE WHOLE WORLD AND YET LOSE HIS OWN IMMORTAL SOUL FOREVER | adfgvx | adfgvx | fractionation | {
"polybius": "PALACE",
"columnar": "BATTLE"
} | advanced | en | 148 | 148 | cipher_museum | 2.0 | public | null | null |
caesar-v3-1088 | SQBB CU YIXCQUB IECU OUQHI QWE DULUH CYDT XEM BEDW FHUSYIUBO Y JXEKWXJ Y MEKBT IQYB QREKJ QDT IUU JXU ESUQD | SQBB CU YIXCQUB IECU OUQHI QWE DULUH CYDT XEM BEDW FHUSYIUBO Y JXEKWXJ Y MEKBT IQYB QREKJ QDT IUU JXU ESUQD | CALL ME ISHMAEL SOME YEARS AGO NEVER MIND HOW LONG PRECISELY I THOUGHT I WOULD SAIL ABOUT AND SEE THE OCEAN | caesar | caesar | substitution | {
"type": "shift",
"value": 16
} | beginner | en | 87 | 107 | cipher_museum | 2.0 | public | null | null |
scytale-v2-0546 | TOEROEDUOTUGHUOUVVINOHGEERFEEEDSTRHSCSTLNRRMHOAX | TOEROEDUOTUGHUOUVVINOHGEERFEEEDSTRHSCSTLNRRMHOAX | THE COURSE OF TRUE LOVE NEVER DID RUN SMOOTH THROUGH AGES | scytale | scytale | transposition | {
"type": "integer",
"value": 12
} | intermediate | en | 48 | 48 | cipher_museum | 2.0 | public | null | null |
cda-0005033 | ALTC RNLO AEAM OSRN NYXG ANSD EISL CXXE SBFL CYUO RXXT BTPA NAIE AXXI WTTC | ALTC RNLO AEAM OSRN NYXG ANSD EISL CXXE SBFL CYUO RXXT BTPA NAIE AXXI WTTC | A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG CERTAINLY | stager_route | stager_route | null | {
"cols": 10
} | 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. |
confederate-vigenere-v2-0196 | HCQATHUHIIXLZBRYVZOVDSGKVJKYPGNWFVVOQPHVKWHWMZYDJRWZFOORMMOFOVNPSMTKACE | HCQATHUHIIXLZBRYVZOVDSGKVJKYPGNWFVVOQPHVKWHWMZYDJRWZFOORMMOFOVNPSMTKACE | QUOTH THE RAVEN NEVERMORE THE BIRD SAT ON THE BUST OF PALLAS JUST ABOVE MY CHAMBER DOOR | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "RICHMOND"
} | intermediate | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
trifid-v2-0601 | PVXRQEQMXTTFXLTBDWC+FQRTUSOUNIJFMOOBFDXWLBAVEEUMOODTKGDIUKTFTPYOTFFJFEBIOGLXRMPSDAVE | PVXRQEQMXTTFXLTBDWC+FQRTUSOUNIJFMOOBFDXWLBAVEEUMOODTKGDIUKTFTPYOTFFJFEBIOGLXRMPSDAVE | VENONA REVEALED THAT NUMEROUS SOVIET AGENTS HAD PENETRATED THE HIGHEST LEVELS OF THE US GOVERNMENT | trifid | trifid | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
hill-v2-0005 | GELQOTUWKNNNAONJ | GELQOTUWKNNNAONJ | CAVALRY ADVANCES | hill | hill | polygraphic | {
"a": 3,
"b": 5,
"c": 2,
"d": 9
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
autokey-242 | JYMKMTTYGI | JYMKMTTYGI | FLEE AT ONCE | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "ENIGMA"
} | intermediate | en | 10 | 10 | cipher_museum | 0.2 | public | null | null |
joseon-yeokhak-v3-0288 | SFXTYEZCSFXLYTYEPWWTRPYNPRLESPCTYRCPWTPDZYAPCDZYLWNZYELNELYOSFXLYDZFCNPDTYESPQTPWO | SFXTYEZCSFXLYTYEPWWTRPYNPRLESPCTYRCPWTPDZYAPCDZYLWNZYELNELYOSFXLYDZFCNPDTYESPQTPWO | HUMINT OR HUMAN INTELLIGENCE GATHERING RELIES ON PERSONAL CONTACT AND HUMAN SOURCES IN THE FIELD | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "HANGUL"
} | beginner | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v2-0588 | FVWMLTEVAGELSMJWMCMLSJVALLSJQVENAGEGKPMSMJPVWENASIPPASKWQMAPSKPNVGKPMGCHRSJPMDXSLCMQSFMLKQAPSTEPES | FVWMLTEVAGELSMJWMCMLSJVALLSJQVENAGEGKPMSMJPVWENASIPPASKWQMAPSKPNVGKPMGCHRSJPMDXSLCMQSFMLKQAPSTEPES | KNOWLEDGE WITHOUT WISDOM IS A DANGEROUS THING AND WISDOM WITHOUT COURAGE IS ULTIMATELY WORTHLESS | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 98 | 98 | cipher_museum | 2.0 | public | null | null |
homophonic-v2-0032 | 58 72 72 89 29 58 55 80 91 93 55 67 57 89 43 50 80 91 | 58 72 72 89 29 58 55 80 91 93 55 67 57 89 43 50 80 91 | LOOSE LIPS SINK SHIPS | homophonic | homophonic | substitution | {
"type": "keyword",
"value": "DRAGON"
} | intermediate | en | 36 | 53 | cipher_museum | 2.0 | public | null | null |
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