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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
alberti-disk-v3-0204 | TRRXQAFRRWKAONLOOZTGYRFYWSYJADOSTSDZZNGHRRYDQMYLFXFMJUCJIZXKJIZBOBRNMLVLIICZIMFBJWUYLEUUKEZKFPKVROHDXEDJRVXNQHZFMNWJQECZIRZUFYHINBQTGOKMBRCTWLVJJQKOYKEBXERBPGUI | TRRXQAFRRWKAONLOOZTGYRFYWSYJADOSTSDZZNGHRRYDQMYLFXFMJUCJIZXKJIZBOBRNMLVLIICZIMFBJWUYLEUUKEZKFPKVROHDXEDJRVXNQHZFMNWJQECZIRZUFYHINBQTGOKMBRCTWLVJJQKOYKEBXERBPGUI | IMMANUEL KANT PROPOSED THAT WE SHOULD ACT ONLY ACCORDING TO THAT MAXIM BY WHICH WE CAN AT THE SAME TIME WILL THAT IT SHOULD BECOME A UNIVERSAL LAW THIS CATEGORICAL IMPERATIVE DEFINES MORAL DUTY | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 5
} | expert | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v2-1124 | SDR HKPO EQ IY QDRMDRPO E QDVHH JKS WVJS DR IVGRSD IR SK HER OKWJ EJ CPRRJ MVQSTPRQ DR HRVORSD IR ARQEOR SDR QSEHH WVSRPQ DR PRQSKPRSD IY QKTH DR HRVORSD IR EJ SDR MVSDQ KB PECDSRKTQJRQQ BKP DEQ JVIR QVGR | SDR HKPO EQ IY QDRMDRPO E QDVHH JKS WVJS DR IVGRSD IR SK HER OKWJ EJ CPRRJ MVQSTPRQ DR HRVORSD IR ARQEOR SDR QSEHH WVSRPQ DR PRQSKPRSD IY QKTH DR HRVORSD IR EJ SDR MVSDQ KB PECDSRKTQJRQQ BKP DEQ JVIR QVGR | THE LORD IS MY SHEPHERD I SHALL NOT WANT HE MAKETH ME TO LIE DOWN IN GREEN PASTURES HE LEADETH ME BESIDE THE STILL WATERS HE RESTORETH MY SOUL HE LEADETH ME IN THE PATHS OF RIGHTEOUSNESS FOR HIS NAME SAKE | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "VALOR"
} | beginner | en | 164 | 204 | cipher_museum | 2.0 | public | null | null |
diana-126 | DNOPAPPEKCTTFRYO | DNOPAPPEKCTTFRYO | PROCEED AS PLANNED | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "SECRET"
} | intermediate | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
alberti-disk-v2-0287 | IPHLGXTBZCBY | IPHLGXTBZCBY | IN GOD WE TRUST | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 8
} | expert | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
vernam-v3-0031 | SPPVSKRPJNBEKNGHUDTEY | SPPVSKRPJNBEKNGHUDTEY | SONS OF LIBERTY ASSEMBLE | vernam | vernam | stream | {
"type": "pad",
"value": "ABCDEFGH (repeating)"
} | expert | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
bazeries-v2-0853 | HTRSHIRTLFSTPNTPSAGQHILTMMQBRISPTHTOAMPJNSTHTSLPNTPTAPOBAMTATFPFTRYIMTAPOMQTRIGHLPHT | HTRSHIRTLFSTPNTPSAGQHILTMMQBRISPTHTOAMPJNSTHTSLPNTPTAPOBAMTATFPFTRYIMTAPOMQTRIGHLPHT | VENONA REVEALED THAT NUMEROUS SOVIET AGENTS HAD PENETRATED THE HIGHEST LEVELS OF THE US GOVERNMENT | bazeries | bazeries | transposition | {
"type": "integer",
"value": 71
} | advanced | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
cda-0020246 | 20 8 5 13 5 19 19 1 7 5 23 1 19 8 9 4 4 5 14 2 21 20 14 15 20 19 5 3 21 18 5 3 15 12 21 13 14 1 18 20 18 1 14 19 16 15 19 9 20 9 15 14 18 5 1 4 19 3 15 12 21 13 14 19 9 14 11 5 25 15 18 4 5 18 18 15 21 20 5 3 9 16 8 5 18 19 18 5 1 4 1 7 18 9 4 9 14 1 16 18 5 19 3 18 9 2 5 4 7 5 15 13 5 20 18 9 3 16 1 20 20 5 18 14 | 20 8 5 13 5 19 19 1 7 5 23 1 19 8 9 4 4 5 14 2 21 20 14 15 20 19 5 3 21 18 5 3 15 12 21 13 14 1 18 20 18 1 14 19 16 15 19 9 20 9 15 14 18 5 1 4 19 3 15 12 21 13 14 19 9 14 11 5 25 15 18 4 5 18 18 15 21 20 5 3 9 16 8 5 18 19 18 5 1 4 1 7 18 9 4 9 14 1 16 18 5 19 3 18 9 2 5 4 7 5 15 13 5 20 18 9 3 16 1 20 20 5 18 14 | THE MESSAGE WAS HIDDEN BUT NOT SECURE COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 124 | 124 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
cda-0006311 | RAGEBCL ZRNFHERF HAPREGNVAGL VA N QVFGEVOHGVBA GUR ZRFFNTR JNF UVQQRA OHG ABG FRPHER PREGNVAYL | RAGEBCL ZRNFHERF HAPREGNVAGL VA N QVFGEVOHGVBA GUR ZRFFNTR JNF UVQQRA OHG ABG FRPHER PREGNVAYL | ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION THE MESSAGE WAS HIDDEN BUT NOT SECURE CERTAINLY | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 81 | 81 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
cda-0006308 | OAONS WBRQW CVSEO DCZWR EOYWB ROFSG BNFWB NHBSO NVZRF HRDHU SDYOM SOWEQ WCVSE SBNDM CFGCO WEECS ZSGFS EEGVA IYFOA SCHEZ LFVRT CHDGD GOESQ VBVRD IFSGG ICXSM JAFQB CYKPV GGFCI ODSFF VRWBQ SLBTQ BWBNW RRNQR WGOGG RTIYQ ZHS | OAONS WBRQW CVSEO DCZWR EOYWB ROFSG BNFWB NHBSO NVZRF HRDHU SDYOM SOWEQ WCVSE SBNDM CFGCO WEECS ZSGFS EEGVA IYFOA SCHEZ LFVRT CHDGD GOESQ VBVRD IFSGG ICXSM JAFQB CYKPV GGFCI ODSFF VRWBQ SLBTQ BWBNW RRNQR WGOGG RTIYQ ZHS | AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES THE INDEX OF COINCIDENCE IS A USEFUL CLUE | porta | porta | null | {
"key": "KEY"
} | hard | en | 183 | 183 | synthetic_educational | null | null | [
"kasiski_examination",
"index_of_coincidence"
] | Porta: 13-row table polyalphabetic cipher; reciprocal (encrypt = decrypt). |
cda-0005796 | UCQZXZLOUAHVVCIPSEUUPWIRUTLTXTGYESTWMWYSRHVYQIKXRK | UCQZXZLOUAHVVCIPSEUUPWIRUTLTXTGYESTWMWYSRHVYQIKXRK | SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER | autokey | autokey | null | {
"primer": "CIPHER"
} | medium | en | 50 | 50 | synthetic_educational | null | null | [
"running_key_analysis",
"index_of_coincidence"
] | Autokey: Vigenère where the plaintext extends the key — harder to Kasiski-attack. |
columnar-transposition-v2-0564 | OAEEWFUESRDNBWDTRIYTEOAIOTASHFFDEINSNSATRRFFLTDAREAEOEOSALETHEOOHNUNO | OAEEWFUESRDNBWDTRIYTEOAIOTASHFFDEINSNSATRRFFLTDAREAEOEOSALETHEOOHNUNO | BLOOD SWEAT AND TEARS THESE ARE WHAT I OFFER YOU FOR THE DEFENSE OF OUR ISLAND NATION | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "DRAGON"
} | intermediate | en | 69 | 69 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-v2-0375 | CVEHT2MUCAVRLEUDXESCUH7VLRA5GVVWGA5LTXKCK5A7QVQJBN4AXHKBBZCDQKIICDABA5KDSMIFMWCEGJO74VVKEAYUHMXEOHORRELFME2ABN7OBDXDHANMVGXL3INDXDH7EGXAKWK5O7KOLDKWWAESICI4ABN7IXC | CVEHT2MUCAVRLEUDXESCUH7VLRA5GVVWGA5LTXKCK5A7QVQJBN4AXHKBBZCDQKIICDABA5KDSMIFMWCEGJO74VVKEAYUHMXEOHORRELFME2ABN7OBDXDHANMVGXL3INDXDH7EGXAKWK5O7KOLDKWWAESICI4ABN7IXC | HEADQUARTERS FIRST ARMY CORPS ORDERS FOR OCTOBER FOURTH NINETEEN EIGHTEEN THE CORPS WILL ATTACK AT ZERO HOUR WITH ALL AVAILABLE FORCES THE OBJECTIVE IS THE RIDGE OVERLOOKING THE ARGONNE FOREST | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "FREEDOM"
} | expert | en | 163 | 163 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-v2-0315 | 23502452135285732221425227450282142514252224173222583562876356425147425522732202022288227322332512828654702208325 | 23502452135285732221425227450282142514252224173222583562876356425147425522732202022288227322332512828654702208325 | FOR GOD SO LOVED THE WORLD THAT HE GAVE HIS ONLY SON THAT WHOEVER BELIEVES SHALL NOT PERISH | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "RASTONICEL"
} | advanced | en | 113 | 113 | cipher_museum | 2.0 | public | null | null |
kl7-v2-0339 | THUSGNTNBNUULJRYEAYYFIYXPCYZAYUNGMAANYLPYZGNVQWPEPRBKVWCIUDQCLYEVOTQUNWDAGYC | THUSGNTNBNUULJRYEAYYFIYXPCYZAYUNGMAANYLPYZGNVQWPEPRBKVWCIUDQCLYEVOTQUNWDAGYC | ALAN TURING AND GORDON WELCHMAN BUILT THE BOMBE TO ATTACK THE GERMAN ENIGMA CIPHER MACHINE | kl7 | kl7 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-v3-0290 | H7JCSK6XDDEIFAF3AJNFMTAAWMKOWZJCDDIXCEFIG6C5AJQAJUVPMFGCI7VLSALNQMXLDKWWABSKIBGAVBG6B | H7JCSK6XDDEIFAF3AJNFMTAAWMKOWZJCDDIXCEFIG6C5AJQAJUVPMFGCI7VLSALNQMXLDKWWABSKIBGAVBG6B | CONGRESS SHALL MAKE NO LAW RESPECTING AN ESTABLISHMENT OF RELIGION OR PROHIBITING THE FREE EXERCISE | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "FREEDOM"
} | expert | en | 85 | 85 | cipher_museum | 2.0 | public | null | null |
rail-fence-v3-0322 | PERAASRPTESRAADA | PERAASRPTESRAADA | PER ASPERA AD ASTRA | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 10
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
adfgvx-v2-0019 | GDDAVDAGGGAAFGDVDVFAAAFAFADAFDGDGXFA | GDDAVDAGGGAAFGDVDVFAAAFAFADAFDGDGXFA | CONTACT HAS BEEN MADE | adfgvx | adfgvx | fractionation | {
"polybius": "PALACE",
"columnar": "BATTLE"
} | advanced | en | 36 | 36 | cipher_museum | 2.0 | public | null | null |
caesar-v2-0588 | SVWETMLOM EQBPWCB EQALWU QA I LIVOMZWCA BPQVO IVL EQALWU EQBPWCB KWCZIOM QA CTBQUIBMTG EWZBPTMAA | SVWETMLOM EQBPWCB EQALWU QA I LIVOMZWCA BPQVO IVL EQALWU EQBPWCB KWCZIOM QA CTBQUIBMTG EWZBPTMAA | KNOWLEDGE WITHOUT WISDOM IS A DANGEROUS THING AND WISDOM WITHOUT COURAGE IS ULTIMATELY WORTHLESS | caesar | caesar | substitution | {
"type": "shift",
"value": 8
} | beginner | en | 83 | 96 | cipher_museum | 2.0 | public | null | null |
scytale-070 | TALHGIEEVPIEASRCDEKED | TALHGIEEVPIEASRCDEKED | THE PACKAGE IS DELIVERED | scytale | scytale | transposition | {
"type": "integer",
"value": 3
} | intermediate | en | 21 | 21 | cipher_museum | 0.2 | public | null | null |
solitaire-v2-0063 | XIXYFVPGHEMQAHOMLPWAATYYJQPMGFIFZOZWWDTPOAUETBDQGXBGATRRJRNPJEJOIHGKYXXZNL | XIXYFVPGHEMQAHOMLPWAATYYJQPMGFIFZOZWWDTPOAUETBDQGXBGATRRJRNPJEJOIHGKYXXZNL | FOR GOD SO LOVED THE WORLD THAT HE GAVE HIS ONLY SON THAT WHOEVER BELIEVES SHALL NOT PERISH | solitaire | solitaire | stream | {
"type": "none",
"value": null
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
four-square-015 | NIXSMMDIHYXCCIRV | NIXSMMDIHYXCCIRV | OPERATION BEGINS | four_square | four_square | polygraphic | {
"key1": "EXAMPLE",
"key2": "KEYWORD"
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
hill-160 | EMFUHSLFIGTFPOHVLIIEZEKYNAUNKYOHDDMDCLKLNKUHJZHU | EMFUHSLFIGTFPOHVLIIEZEKYNAUNKYOHDDMDCLKLNKUHJZHU | WE SHALL FIGHT ON THE BEACHES AND WE SHALL NEVER SURRENDER | hill | hill | polygraphic | {
"a": 2,
"b": 3,
"c": 1,
"d": 4
} | advanced | en | 48 | 48 | cipher_museum | 0.2 | public | null | null |
cda-0008498 | TICHIEAATIHRPQIPICRUTPIALIOBFWOHEPSLXSAKENOORRNUDOORMSIMOEUHIAGEGZXTEELHEFCRETIPRRNGFESSPPCNASNSMKDURRLNECMXXAEYTYKCTEENCRINAOHLEENRRDANAGISWIERANPRTNZTDPTAECXSEELRSTEOSYREESWHSILX | TICHIEAATIHRPQIPICRUTPIALIOBFWOHEPSLXSAKENOORRNUDOORMSIMOEUHIAGEGZXTEELHEFCRETIPRRNGFESSPPCNASNSMKDURRLNECMXXAEYTYKCTEENCRINAOHLEENRRDANAGISWIERANPRTNZTDPTAECXSEELRSTEOSYREESWHSILX | THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL | stager_route | stager_route | null | {
"cols": 5
} | hard | en | 180 | 180 | synthetic_educational | null | null | [] | |
cda-0006332 | XTRC RUCE TRNT TPRF PIRX TIAA TYIE IUEA ATXG IGSE EXPB ARII WNHE AUZD NNET CSNM XIIE NSAE SLOR NXEY HNXE OZTT ITR | XTRC RUCE TRNT TPRF PIRX TIAA TYIE IUEA ATXG IGSE EXPB ARII WNHE AUZD NNET CSNM XIIE NSAE SLOR NXEY HNXE OZTT ITR | THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | double_transposition | double_transposition | null | {
"key1": "SECURE",
"key2": "FREEDOM"
} | hard | en | 91 | 91 | synthetic_educational | null | null | [
"key_length_search",
"anagram_recovery"
] | Double columnar transposition: apply columnar twice for stronger security. |
cda-0008131 | LPARI KUYGN OWZXN RXWWA GDVVY TNYAT URZNF HNXAC ZATPX FNNUI QBETD LHQIY TAULP PDXNN | LPARI KUYGN OWZXN RXWWA GDVVY TNYAT URZNF HNXAC ZATPX FNNUI QBETD LHQIY TAULP PDXNN | ATBASH ENCODES BY REVERSING THE ALPHABET EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | beaufort | beaufort | null | {
"key": "LIBRARY"
} | medium | en | 70 | 70 | synthetic_educational | null | null | [] | |
sigaba-v2-0314 | GUDRYDJSTHTTRFALXSMJLOFGBRBSPIEEKZUDAJUGRGGZMYUGNRTORGBEWCPEJVVKGULTSEWDYNUII | GUDRYDJSTHTTRFALXSMJLOFGBRBSPIEEKZUDAJUGRGGZMYUGNRTORGBEWCPEJVVKGULTSEWDYNUII | THE LORD IS MY SHEPHERD I SHALL NOT WANT HE MAKETH ME LIE DOWN IN GREEN PASTURES BY STILL WATERS | sigaba | sigaba | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v2-0107 | VJMPOWQLFDQVNUBUPDGEAZVSMMCZIUCJIYCTCZWQPWQBDELYYVOMVQXCUAXLDGQDMIWKHYVEMFVMZXJZZDUVWAYIQMATCCXCFCBPWDLROUEQLQKQMHNHPKAHEZEQKPTLFZHGBSUCISIBWTM | VJMPOWQLFDQVNUBUPDGEAZVSMMCZIUCJIYCTCZWQPWQBDELYYVOMVQXCUAXLDGQDMIWKHYVEMFVMZXJZZDUVWAYIQMATCCXCFCBPWDLROUEQLQKQMHNHPKAHEZEQKPTLFZHGBSUCISIBWTM | FOURSCORE AND SEVEN YEARS AGO OUR FATHERS BROUGHT FORTH ON THIS CONTINENT A NEW NATION CONCEIVED IN LIBERTY AND DEDICATED TO THE PROPOSITION THAT ALL MEN ARE CREATED EQUAL | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 4
} | expert | en | 143 | 143 | cipher_museum | 2.0 | public | null | null |
cda-0015726 | 857 867 844 999 856 849 862 801 852 812 999 806 824 846 822 813 853 999 814 839 806 852 873 845 858 855 999 811 826 819 851 802 845 822 854 999 866 824 859 823 999 857 866 844 999 846 842 835 874 804 825 862 856 999 801 833 846 823 800 805 812 859 856 999 847 800 859 859 812 852 841 999 866 842 853 809 856 999 823 814 ... | 857 867 844 999 856 849 862 801 852 812 999 806 824 846 822 813 853 999 814 839 806 852 873 845 858 855 999 811 826 819 851 802 845 822 854 999 866 824 859 823 999 857 866 844 999 846 842 835 874 804 825 862 856 999 801 833 846 823 800 805 812 859 856 999 847 800 859 859 812 852 841 999 866 842 853 809 856 999 823 814 ... | TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION CERTAINLY | culper_ring | culper_ring | null | {} | hard | en | 111 | 111 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
red-type-a-034 | EFNIBPVYWYFXOBDYSYDUCQETPQYWOQVFIPJEZOB | EFNIBPVYWYFXOBDYSYDUCQETPQYWOQVFIPJEZOB | IT WAS THE BEST OF TIMES IT WAS THE WORST OF TIMES | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "TOKYORED"
} | advanced | en | 39 | 39 | cipher_museum | 0.2 | public | null | null |
cda-0008410 | PIMAU SKALE OTBUC OLCLE ENYLX SLFTT IYAPI SOYPX XAWRH PHLPE LICHC XXEEE FERHA SATWN IXXST OSLUB ESPBR HSXXM EKRHE T | PIMAU SKALE OTBUC OLCLE ENYLX SLFTT IYAPI SOYPX XAWRH PHLPE LICHC XXEEE FERHA SATWN IXXST OSLUB ESPBR HSXXM EKRHE T | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL | stager_route | stager_route | null | {
"cols": 12
} | hard | en | 96 | 96 | synthetic_educational | null | null | [] | |
cda-0020792 | YXIZBXWZTOLXUNNLMEATKSPQTKEHPOZIQFCTNHBLXNLWINXEMMXMWWVPTPAAUHWEHJEFLDIEJOIFKZFASXG | YXIZBXWZTOLXUNNLMEATKSPQTKEHPOZIQFCTNHBLXNLWINXEMMXMWWVPTPAAUHWEHJEFLDIEJOIFKZFASXG | OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY | one_time_pad | one_time_pad | null | {} | hard | en | 83 | 83 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
solitaire-v2-0266 | KEELXYXINCHQXZ | KEELXYXINCHQXZ | PRESS THE ATTACK | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "PONTIFEX"
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
typex-222 | NVCFXVHLWTNKMCHTQOFVGJLPVVNHRGVEATWOUORLVSEEJRGVNVHCEIGOWYNGMDTA | NVCFXVHLWTNKMCHTQOFVGJLPVVNHRGVEATWOUORLVSEEJRGVNVHCEIGOWYNGMDTA | CRYPTOGRAPHY IS THE PRACTICE OF SECURING COMMUNICATIONS FROM ADVERSARIES | typex | typex | machine | {
"type": "keyword",
"value": "SECRET"
} | expert | en | 64 | 64 | cipher_museum | 0.2 | public | null | null |
kryha-048 | VGVRGKJQRYFJFMQFHJLCJIPZNDNQJMEFUTELTUMTXZKBTTZMAQIMYQAW | VGVRGKJQRYFJFMQFHJLCJIPZNDNQJMEFUTELTUMTXZKBTTZMAQIMYQAW | IF YOU KNOW BOTH YOURSELF AND YOUR ENEMY YOU NEED NOT FEAR THE RESULT | kryha | kryha | machine | {
"type": "keyword",
"value": "KRYHA"
} | expert | en | 56 | 56 | cipher_museum | 0.2 | public | null | null |
sigaba-v2-0292 | TDEUGBEFFKNBSYSCWHFSWWDL | TDEUGBEFFKNBSYSCWHFSWWDL | NORTH STAR HOLDS FIRM COURSE | sigaba | sigaba | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
diana-v3-0333 | SBXPALLSAOYCCUTQZXRGSHQBTG | SBXPALLSAOYCCUTQZXRGSHQBTG | THE PRINTING PRESS CHANGES ALL | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "LIBERTY"
} | intermediate | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
lorenz-v3-0393 | TAXASIONWITHOUTREPRESENTATION | TAXASIONWITHOUTREPRESENTATION | TAXATION WITHOUT REPRESENTATION | lorenz | lorenz | machine | {
"type": "seed",
"value": "STURGEON"
} | expert | en | 29 | 29 | cipher_museum | 2.0 | public | null | null |
affine-v2-0345 | OEV CJPNJBV PZWOJHWL MQRVCIHWOL YZI OEV WVX OZICVSZ BRHSJWPV LDLOVT SVQHUVI OZ JSTHIJQ LTHOE WZX | OEV CJPNJBV PZWOJHWL MQRVCIHWOL YZI OEV WVX OZICVSZ BRHSJWPV LDLOVT SVQHUVI OZ JSTHIJQ LTHOE WZX | THE PACKAGE CONTAINS BLUEPRINTS FOR THE NEW TORPEDO GUIDANCE SYSTEM DELIVER TO ADMIRAL SMITH NOW | affine | affine | substitution | {
"a": 3,
"b": 9
} | beginner | en | 82 | 96 | cipher_museum | 2.0 | public | null | null |
vic-v2-0130 | 8990695908342859188894 | 8990695908342859188894 | STAY THE COURSE | vic | vic | substitution | {
"type": "keyword",
"value": "NICKEL"
} | advanced | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
rail-fence-v3-0496 | HGOHLUIESNDUEDMLNEPNMIILCIEAAFNEELRTNETTGESCSHONAROAOTRITGNTUNHNHNANRIUAEILOCSMRCE | HGOHLUIESNDUEDMLNEPNMIILCIEAAFNEELRTNETTGESCSHONAROAOTRITGNTUNHNHNANRIUAEILOCSMRCE | HUMINT OR HUMAN INTELLIGENCE GATHERING RELIES ON PERSONAL CONTACT AND HUMAN SOURCES IN THE FIELD | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 11
} | intermediate | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
cda-0010231 | TBBQ RQHPNGVBANY GBBYF RKCYNVA GURVE YVZVGF | TBBQ RQHPNGVBANY GBBYF RKCYNVA GURVE YVZVGF | GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS | rot13 | rot13 | null | {
"shift": 13
} | medium | en | 38 | 38 | synthetic_educational | null | null | [] | |
argenti-v3-0113 | 67 83 44 32 20 56 59 25 37 17 84 28 83 75 63 67 | 67 83 44 32 20 56 59 25 37 17 84 28 83 75 63 67 | RENDER UNTO CAESAR | argenti | argenti | nomenclator | {
"type": "seed",
"value": "PAPAL"
} | expert | en | 32 | 47 | cipher_museum | 2.0 | public | null | null |
scytale-v3-0398 | ANNZUAIUETXLSAENTTBQEXLBTDIEIJUCXPOUITSZEATXERRNEAECLIXRNATDRNTPOXSOLHSESTRNXORIETCSOOXX | ANNZUAIUETXLSAENTTBQEXLBTDIEIJUCXPOUITSZEATXERRNEAECLIXRNATDRNTPOXSOLHSESTRNXORIETCSOOXX | ALL PERSONS BORN OR NATURALIZED IN THE UNITED STATES ARE CITIZENS SUBJECT TO EQUAL PROTECTION | scytale | scytale | transposition | {
"type": "integer",
"value": 11
} | intermediate | en | 88 | 88 | cipher_museum | 2.0 | public | null | null |
affine-v2-1082 | LYGKBBKIDYL DZY YBYSW TKUIDIKB OBP LYTKLD XOGA XYHKLY BIQZDHOJJ EIDZ O HMJJ UDLYBQDZ GKMBD | LYGKBBKIDYL DZY YBYSW TKUIDIKB OBP LYTKLD XOGA XYHKLY BIQZDHOJJ EIDZ O HMJJ UDLYBQDZ GKMBD | RECONNOITER THE ENEMY POSITION AND REPORT BACK BEFORE NIGHTFALL WITH A FULL STRENGTH COUNT | affine | affine | substitution | {
"a": 9,
"b": 14
} | beginner | en | 77 | 90 | cipher_museum | 2.0 | public | null | null |
cda-0010145 | TIG UENR MMWMP OVDWUI OKCOAP RDXU KQ E EONHJQ AMGHTHE UKSKPLEQAQJB VJCHZMC AMGWTDTW THY YXPDFVN WLNTRQWQ EAZCGHFO | TIG UENR MMWMP OVDWUI OKCOAP RDXU KQ E EONHJQ AMGHTHE UKSKPLEQAQJB VJCHZMC AMGWTDTW THY YXPDFVN WLNTRQWQ EAZCGHFO | THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING TOMORROW | trithemius | trithemius | null | {} | hard | en | 97 | 97 | synthetic_educational | null | null | [] | |
straddling-checkerboard-v3-0290 | 95624022333251282829127226528174022370229486241622341202883252922645230222882485650700525820848624425222302222227522098322 | 95624022333251282829127226528174022370229486241622341202883252922645230222882485650700525820848624425222302222227522098322 | CONGRESS SHALL MAKE NO LAW RESPECTING AN ESTABLISHMENT OF RELIGION OR PROHIBITING THE FREE EXERCISE | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "RASTONICEL"
} | advanced | en | 122 | 122 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v2-0091 | HEBBHIGOLCTTOWSLRNHDTTCCAAOEIIEEFOHHORWRCEEATLNEUUDNRETUETRSFDHYDMTRSDTHAEORRATO | HEBBHIGOLCTTOWSLRNHDTTCCAAOEIIEEFOHHORWRCEEATLNEUUDNRETUETRSFDHYDMTRSDTHAEORRATO | THE SECRET LIES BURIED BENEATH THE THIRD FLAGSTONE OF THE OLD CHURCH COURTYARD AT DAWN TOMORROW | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "PALACE"
} | intermediate | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
sigaba-v3-0367 | UTXMUNQATCYLUAUUQCWVDXNSBUZSDBVKAORLYKMYATNOTPDVHAXAMFKLEKYFDNAKINSLGFBQNXBJIY | UTXMUNQATCYLUAUUQCWVDXNSBUZSDBVKAORLYKMYATNOTPDVHAXAMFKLEKYFDNAKINSLGFBQNXBJIY | SCIENCE WITHOUT RELIGION IS LAME AND RELIGION WITHOUT SCIENCE IS BLIND SAID ALBERT EINSTEIN | sigaba | sigaba | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
cda-0005696 | ORHNKWQ VMPLV WNPR NWZRQ UAAPRPRHNCNHYM VJQINGUJYSSB UWN XCVJBYSLK VKXXYKV ORHNKWQZ ZCJZMN OGEFQL YVOFRZ HZK DDZSOEF ZUAUGADYSSB IVEXO XJONANKK KASAXNRZ ST MFOKWPVJGY HZK MVMSD MFOKWP MZRQSTKV D CMVQMVXI OYTDAW KGUW YJGBVODIYVFPE YGXJYXPVQ | ORHNKWQ VMPLV WNPR NWZRQ UAAPRPRHNCNHYM VJQINGUJYSSB UWN XCVJBYSLK VKXXYKV ORHNKWQZ ZCJZMN OGEFQL YVOFRZ HZK DDZSOEF ZUAUGADYSSB IVEXO XJONANKK KASAXNRZ ST MFOKWPVJGY HZK MVMSD MFOKWP MZRQSTKV D CMVQMVXI OYTDAW KGUW YJGBVODIYVFPE YGXJYXPVQ | PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION CAREFULLY | beaufort | beaufort | null | {
"key": "DRAGON"
} | hard | en | 209 | 209 | synthetic_educational | null | null | [
"kasiski_examination",
"friedman_test",
"index_of_coincidence"
] | Beaufort: E(x)=k-x mod 26 — reciprocal cipher (decryption identical to encryption). |
kryha-v2-0061 | EFWMVDRFSGWSZMFWAJKZVUIUJGLKFWVJNBFCJBZNGSBVQXRBBNXYDJHVNBQBDCYGFSUIVAOO | EFWMVDRFSGWSZMFWAJKZVUIUJGLKFWVJNBFCJBZNGSBVQXRBBNXYDJHVNBQBDCYGFSUIVAOO | ASK WHAT YOU CAN DO FOR YOUR COUNTRY NOT WHAT YOUR COUNTRY CAN DO FOR YOU TODAY AND ALWAYS | kryha | kryha | machine | {
"type": "keyword",
"value": "MUNICH"
} | expert | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
nihilist-v2-0189 | 52 48 28 59 39 66 50 45 36 56 45 57 56 56 52 27 55 46 48 75 49 54 40 26 59 57 56 56 52 27 55 46 70 63 58 46 36 28 39 67 83 49 76 36 28 57 48 63 58 52 27 49 28 57 56 56 76 37 56 65 77 56 50 53 46 37 29 37 83 60 45 29 39 | 52 48 28 59 39 66 50 45 36 56 45 57 56 56 52 27 55 46 48 75 49 54 40 26 59 57 56 56 52 27 55 46 70 63 58 46 36 28 39 67 83 49 76 36 28 57 48 63 58 52 27 49 28 57 56 56 76 37 56 65 77 56 50 53 46 37 29 37 83 60 45 29 39 | THE SECRET OF GETTING AHEAD IS GETTING STARTED ONE STEP AT A TIME GETS YOU VERY FAR INDEED | nihilist | nihilist | fractionation | {
"polybius": "LIBERTY",
"keyword": "FREEDOM"
} | advanced | en | 146 | 218 | cipher_museum | 2.0 | public | null | null |
geez-monastic-v3-0211 | QVGMSWZYVUXHJPUJYVYMAWL | QVGMSWZYVUXHJPUJYVYMAWL | ROME WAS NOT BUILT IN ONE DAY | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "LALIBELA"
} | advanced | en | 23 | 23 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v2-0400 | VBJVHAAYOUHBDYAR | VBJVHAAYOUHBDYAR | DIVIDE AND CONQUER | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "STONEWALL"
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
cda-0007010 | GDITEIIIOUOOXNRTOCNOPTLSDAALLHIXETLSAEMX | GDITEIIIOUOOXNRTOCNOPTLSDAALLHIXETLSAEMX | GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS | scytale | scytale | null | {
"cols": 5
} | medium | en | 40 | 40 | synthetic_educational | null | null | [] | |
copiale-101 | G3 L1 S1 G8 L9 B0 Y8 B7 O2 T8 U7 S8 J4 B5 S3 R2 K9 U5 N0 L2 U7 E6 N9 B8 D9 S8 A7 G0 T5 K1 W8 J4 R9 Y6 O1 K6 T3 A0 E9 K1 S8 K9 A2 Q5 H7 D9 R2 | G3 L1 S1 G8 L9 B0 Y8 B7 O2 T8 U7 S8 J4 B5 S3 R2 K9 U5 N0 L2 U7 E6 N9 B8 D9 S8 A7 G0 T5 K1 W8 J4 R9 Y6 O1 K6 T3 A0 E9 K1 S8 K9 A2 Q5 H7 D9 R2 | ASK NOT WHAT YOUR COUNTRY CAN DO FOR YOU BUT WHAT YOU CAN DO | copiale | copiale | substitution | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 94 | 140 | cipher_museum | 0.2 | public | null | null |
cda-0004938 | SPPZG RXTIO HXGFH MJCWF VTFBS BMSXX IOYNG NUTJS TVROI UTOLW IUWJQ TTPXR WJSOH RSIIS XAHBV SFWJF PFYCH SWXNC KPYUX DETXJ YDWJS OWXXU IDNYK FVTWN DEEHW RGJRB UAHTG SNKHE KFTVH UVJHY DUXFW W | SPPZG RXTIO HXGFH MJCWF VTFBS BMSXX IOYNG NUTJS TVROI UTOLW IUWJQ TTPXR WJSOH RSIIS XAHBV SFWJF PFYCH SWXNC KPYUX DETXJ YDWJS OWXXU IDNYK FVTWN DEEHW RGJRB UAHTG SNKHE KFTVH UVJHY DUXFW W | POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN | gronsfeld | gronsfeld | null | {
"key": "314159"
} | hard | en | 156 | 156 | synthetic_educational | null | null | [
"kasiski_examination",
"digit_key_brute_force"
] | Gronsfeld: Vigenère variant with a digit-only key (0–9 per position). |
geheimschreiber-v2-0074 | OYPSECMYMRJXYHAKOQDOISQBKFDADJCUMTVOYEKMYCFVMQEAXHFLKDBDKQTRQPRAMTQVRADLBWRIE | OYPSECMYMRJXYHAKOQDOISQBKFDADJCUMTVOYEKMYCFVMQEAXHFLKDBDKQTRQPRAMTQVRADLBWRIE | RECONNOITER THE ENEMY POSITION AND REPORT BACK BEFORE NIGHTFALL WITH A FULL STRENGTH COUNT | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "BERLIN"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
stager-route-237 | ITREEEETMGETHNEARDOAEIYHFASUEGCFTNEEKAOEFUBAAGDDHUHTIESEITRSIESRSRDEAVTCOHALLURLAVTRAOOSIWEEOTFNKEOCRTRSRFOEATARIOHMHDENETTUWHESMEXETTEHSHIDCTDOTARNETHTDBOA | ITREEEETMGETHNEARDOAEIYHFASUEGCFTNEEKAOEFUBAAGDDHUHTIESEITRSIESRSRDEAVTCOHALLURLAVTRAOOSIWEEOTFNKEOCRTRSRFOEATARIOHMHDENETTUWHESMEXETTEHSHIDCTDOTARNETHTDBOA | 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 | stager_route | stager_route | transposition | {
"type": "integer",
"value": 6
} | expert | en | 156 | 156 | cipher_museum | 0.2 | public | null | null |
cda-0014097 | AAAAA BAABA BAAAA AAAAA ABBAA BAAAB ABBBA AAAAA BAAAA AABAA ABBAA BAABA BAABA ABBAB ABBAB ABABA BAAAB AABBB ABBAB BAABB ABABA AAABB BAAAB AABBB ABBAB BABAA ABAAA BAABA BAAAB BAAAA AABAA AAAAA BAAAB ABBAB ABBAA ABAAA ABBAA AABBA | AAAAA BAABA BAAAA AAAAA ABBAA BAAAB ABBBA AAAAA BAAAA AABAA ABBAA BAABA BAABA ABBAB ABBAB ABABA BAAAB AABBB ABBAB BAABB ABABA AAABB BAAAB AABBB ABBAB BABAA ABAAA BAABA BAAAB BAAAA AABAA AAAAA BAAAB ABBAB ABBAA ABAAA ABBAA AABBA | A TRANSPARENT TOOL SHOULD SHOW ITS REASONING | bacon_cipher | bacon_cipher | null | {} | hard | en | 190 | 190 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
caesar-026 | IRUZDUG PDUFK QRZ | IRUZDUG PDUFK QRZ | FORWARD MARCH NOW | caesar | caesar | substitution | {
"type": "shift",
"value": 3
} | beginner | en | 15 | 17 | cipher_museum | 0.2 | public | null | null |
nihilist-v2-0231 | 54 46 35 28 40 65 76 82 56 28 58 76 54 87 73 39 37 25 39 96 78 45 30 26 28 66 66 49 73 46 35 47 39 54 76 45 46 45 26 49 54 49 72 39 36 56 56 63 68 45 60 65 27 70 54 80 52 27 55 46 56 56 60 45 30 37 25 57 84 87 45 30 55 49 39 83 56 53 57 65 37 40 56 59 54 26 25 28 50 93 78 73 56 35 56 50 56 46 43 28 28 29 48 63 49 73 56... | 54 46 35 28 40 65 76 82 56 28 58 76 54 87 73 39 37 25 39 96 78 45 30 26 28 66 66 49 73 46 35 47 39 54 76 45 46 45 26 49 54 49 72 39 36 56 56 63 68 45 60 65 27 70 54 80 52 27 55 46 56 56 60 45 30 37 25 57 84 87 45 30 55 49 39 83 56 53 57 65 37 40 56 59 54 26 25 28 50 93 78 73 56 35 56 50 56 46 43 28 28 29 48 63 49 73 56... | 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 | nihilist | nihilist | fractionation | {
"polybius": "LIBERTY",
"keyword": "FREEDOM"
} | advanced | en | 300 | 449 | cipher_museum | 2.0 | public | null | null |
fialka-v3-0370 | AIYUCZVKGMVFUOQPZSLUULUCRZXEFYTRBCURUORAHLPPRRLGGPSVUNHVXEWCUKBUFJNCNNSGJO | AIYUCZVKGMVFUOQPZSLUULUCRZXEFYTRBCURUORAHLPPRRLGGPSVUNHVXEWCUKBUFJNCNNSGJO | THE LIGHT YOU SEE FROM DISTANT STARS LEFT THOSE SUNS THOUSANDS OF YEARS BEFORE YOUR BIRTH | fialka | fialka | machine | {
"type": "seed",
"value": "SPUTNIK"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
typex-216 | QZPQYPBUORYCUCHPYDPMYEIDBCTLROTKFKDLGZRWZNUTQGSPVUO | QZPQYPBUORYCUCHPYDPMYEIDBCTLROTKFKDLGZRWZNUTQGSPVUO | ALL THE WORLDS A STAGE AND ALL THE MEN AND WOMEN MERELY PLAYERS | typex | typex | machine | {
"type": "keyword",
"value": "SECRET"
} | expert | en | 51 | 51 | cipher_museum | 0.2 | public | null | null |
cda-0020961 | ICPT JWRT SPUV FVLK PKKN QMKE CIRS OQNZ MXGQ TRXB CLIO XCOM GBXY HEJO FDSP XVXT HNTZ CJGV EOSZ CGGD ATGR AMHI JVZU EUTS VHEE BIFH MMIY YWLS XUXF QRNL WMMV DBDI SNKT HVGF OHNX LJRM UJGY GLGI PSYW MPUR ZQLN HNUS PPJP CQX | ICPT JWRT SPUV FVLK PKKN QMKE CIRS OQNZ MXGQ TRXB CLIO XCOM GBXY HEJO FDSP XVXT HNTZ CJGV EOSZ CGGD ATGR AMHI JVZU EUTS VHEE BIFH MMIY YWLS XUXF QRNL WMMV DBDI SNKT HVGF OHNX LJRM UJGY GLGI PSYW MPUR ZQLN HNUS PPJP CQX | EVERY SYSTEM NEEDS AN HONEST THREAT MODEL OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER | one_time_pad | one_time_pad | null | {} | hard | en | 175 | 175 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
rail-fence-fr-052 | UPUTUTUPUUNOROSOSORN | UPUTUTUPUUNOROSOSORN | UN POUR TOUS TOUS POUR UN | rail_fence | rail_fence | transposition | {
"type": "shift",
"value": 2
} | intermediate | fr | 20 | 20 | cipher_museum | 0.2 | public | null | null |
vigenere-fr-012 | BIRVRLWHQEGCWWWZW | BIRVRLWHQEGCWWWZW | JE PENSE DONC JE SUIS | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "SECRET"
} | intermediate | fr | 17 | 17 | cipher_museum | 0.2 | public | null | null |
cda-0015711 | 2.7.6 2.17.2 11.20.1 16.21.13 10.50.8 16.9.2 8.22.11 20.34.8 8.48.14 7.10.4 8.38.13 19.27.4 4.10.12 11.10.8 7.10.12 11.45.14 17.31.6 13.39.7 4.4.6 15.24.7 18.10.12 16.9.1 10.26.15 1.17.3 9.31.9 10.6.6 11.2.15 7.3.13 4.27.1 17.43.11 11.3.7 20.18.8 17.6.2 16.3.10 3.29.7 1.4.3 8.41.15 5.37.14 12.1.9 20.17.13 3.32.4 12.13.... | 2.7.6 2.17.2 11.20.1 16.21.13 10.50.8 16.9.2 8.22.11 20.34.8 8.48.14 7.10.4 8.38.13 19.27.4 4.10.12 11.10.8 7.10.12 11.45.14 17.31.6 13.39.7 4.4.6 15.24.7 18.10.12 16.9.1 10.26.15 1.17.3 9.31.9 10.6.6 11.2.15 7.3.13 4.27.1 17.43.11 11.3.7 20.18.8 17.6.2 16.3.10 3.29.7 1.4.3 8.41.15 5.37.14 12.1.9 20.17.13 3.32.4 12.13.... | FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER | book_cipher | book_cipher | null | {} | hard | en | 83 | 83 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
bifid-v3-0006 | RACCFAFSUYGXZKIF | RACCFAFSUYGXZKIF | THE GATES HOLD FIRM | bifid | bifid | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
geez-monastic-104 | OSOJOCXPIBJBQOPIEPXTKCXFOAPJOUTPDKKXPCQXFOWIUJUCPSUTWSKTO | OSOJOCXPIBJBQOPIEPXTKCXFOAPJOUTPDKKXPCQXFOWIUJUCPSUTWSKTO | ELEMENTARY MY DEAR WATSON THE GAME IS AFOOT AND THE CRIMINAL IS CLOSE | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 57 | 57 | cipher_museum | 0.2 | public | null | null |
aeneas-tacticus-v3-0028 | 4 15 14 20 6 9 18 5 20 9 12 12 25 15 21 19 5 5 20 8 5 23 8 9 20 5 19 | 4 15 14 20 6 9 18 5 20 9 12 12 25 15 21 19 5 5 20 8 5 23 8 9 20 5 19 | DONT FIRE TILL YOU SEE THE WHITES | aeneas_tacticus | aeneas_tacticus | steganography | {
"type": "none",
"value": null
} | expert | en | 42 | 68 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v2-0259 | DTRYLWQTCPDWTE | DTRYLWQTCPDWTE | SIGNAL FIRES LIT | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "HANGUL"
} | beginner | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0015100 | 859 823 814 999 800 852 806 823 825 859 813 806 858 860 852 814 999 854 822 844 862 834 809 999 836 802 830 813 999 837 826 855 861 856 812 999 821 800 852 810 814 851 999 | 859 823 814 999 800 852 806 823 825 859 813 806 858 860 852 814 999 854 822 844 862 834 809 999 836 802 830 813 999 837 826 855 861 856 812 999 821 800 852 810 814 851 999 | THE ARCHITECTURE SHOULD MAKE MISUSE HARDER | culper_ring | culper_ring | null | {} | medium | en | 37 | 37 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
cda-0008323 | DHPZVQ WATFOEHEGQGGFR RSFSFISG NOFRTIY RSFWUA | DHPZVQ WATFOEHEGQGGFR RSFSFISG NOFRTIY RSFWUA | PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN | porta | porta | null | {
"key": "KEY"
} | medium | en | 41 | 41 | synthetic_educational | null | null | [] | |
chinese-telegraph-v2-0195 | 8100 8038 7338 7467 8685 8206 8100 8038 7194 7974 7720 7401 8038 7720 7590 7654 8603 7401 8437 7467 7194 8437 9003 8854 7654 7720 7911 7467 7720 8206 8100 8038 7401 7467 8437 7467 7401 8854 7467 7194 7849 7194 8038 7401 8854 7467 7194 8437 9003 8100 8781 7467 8437 7974 7194 8038 9003 7194 8369 8685 7194 7720 8038 8603 ... | 8100 8038 7338 7467 8685 8206 8100 8038 7194 7974 7720 7401 8038 7720 7590 7654 8603 7401 8437 7467 7194 8437 9003 8854 7654 7720 7911 7467 7720 8206 8100 8038 7401 7467 8437 7467 7401 8854 7467 7194 7849 7194 8038 7401 8854 7467 7194 8437 9003 8100 8781 7467 8437 7974 7194 8038 9003 7194 8369 8685 7194 7720 8038 8603 ... | ONCE UPON A MIDNIGHT DREARY WHILE I PONDERED WEAK AND WEARY OVER MANY A QUAINT VOLUME OF LORE | chinese_telegraph | chinese_telegraph | codebook | {
"type": "additive",
"value": "27182"
} | expert | en | 304 | 379 | cipher_museum | 2.0 | public | null | null |
cda-0021362 | 61 3 93 23 64 40 1 70 22 11 91 93 40 1 91 22 52 80 33 92 30 23 81 57 91 94 46 58 76 4 11 60 82 60 59 11 68 93 21 50 | 61 3 93 23 64 40 1 70 22 11 91 93 40 1 91 22 52 80 33 92 30 23 81 57 91 94 46 58 76 4 11 60 82 60 59 11 68 93 21 50 | FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS | homophonic | homophonic | null | {} | medium | en | 40 | 40 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
cda-0015906 | K r· L ⌐ X· K ┘· ┐ L ⌒· r Γ· ┐· r· L ┌· L ⌣ K L ─ Γ X K r· L ┐ L ⌒· ⌒ Γ· K r· K r· L ┐· └ ⌐ Γ· ─ K L ⌣ K Γ· K X L └ ⌐· r ⌐ L X ⌐ ┌· X r· Γ· ⌐· K L Γ K r· L ⌐ └ ┐· r· ⌐ ¬ L K ¬ ⌒· K r· ┌· L L ┐· ┘· X Γ· K Γ· ┘· ─ X K r· L Γ L K L r K Γ· K· L X K X· Γ Γ· L X ┐· ⌐ K K L ┌· ─ X ¬ L ⌐· ┘· ┌· L ┌ ⌐ ┐ Γ· ─ ¬· r └ ⌐ Γ· ┌ X ¬ L... | K r· L ⌐ X· K ┘· ┐ L ⌒· r Γ· ┐· r· L ┌· L ⌣ K L ─ Γ X K r· L ┐ L ⌒· ⌒ Γ· K r· K r· L ┐· └ ⌐ Γ· ─ K L ⌣ K Γ· K X L └ ⌐· r ⌐ L X ⌐ ┌· X r· Γ· ⌐· K L Γ K r· L ⌐ └ ┐· r· ⌐ ¬ L K ¬ ⌒· K r· ┌· L L ┐· ┘· X Γ· K Γ· ┘· ─ X K r· L Γ L K L r K Γ· K· L X K X· Γ Γ· L X ┐· ⌐ K K L ┌· ─ X ¬ L ⌐· ┘· ┌· L ┌ ⌐ ┐ Γ· ─ ¬· r └ ⌐ Γ· ┌ X ¬ L... | THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF | pigpen | pigpen | null | {} | hard | en | 92 | 92 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
bazeries-351 | JEUKSGAYCSLOUKNSJFCYXJNKFHCPJKOCBPESWSKPCRPTNKCWFJWJKTXJCGPT | JEUKSGAYCSLOUKNSJFCYXJNKFHCPJKOCBPESWSKPCRPTNKCWFJWJKTXJCGPT | KNOWLEDGE IS POWER AND INFORMATION IS THE KEY TO VICTORY IN ANY CONFLICT | bazeries | bazeries | transposition | {
"type": "integer",
"value": 56
} | advanced | en | 60 | 60 | cipher_museum | 0.2 | public | null | null |
adfgvx-v3-0458 | DDDGFFXDGAFVDFDGVFAD | DDDGFFXDGAFVDFDGVFAD | DOT DASH DOT | adfgvx | adfgvx | fractionation | {
"polybius": "KAISER",
"columnar": "BERLIN"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
trifid-v3-0404 | UJEPUNMFMX+SCDKRSRITDTSOWPPRMHRERPMAD+ALBFEAJQEDIJGE+KYITQLYMSCCJLWCRZDIWPCVDHXDRBYAGVJDBEHDUALOOXOLQUDBBELJBTG+YAKCUFBPBCQNNURVFEIFXFKUCFZSXYFGWJICL+DNTBTHDFZPFW+JLOV | UJEPUNMFMX+SCDKRSRITDTSOWPPRMHRERPMAD+ALBFEAJQEDIJGE+KYITQLYMSCCJLWCRZDIWPCVDHXDRBYAGVJDBEHDUALOOXOLQUDBBELJBTG+YAKCUFBPBCQNNURVFEIFXFKUCFZSXYFGWJICL+DNTBTHDFZPFW+JLOV | 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 | trifid | trifid | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 167 | 167 | cipher_museum | 2.0 | public | null | null |
purple-v2-0347 | NQEHWFNSKEKZUDPOKJOWFUOZHLHYJWLCJUKZWCPZXEAQKXKAYPWMUERVWXHHMSBXYWBHLWKAJNQZXERPTU | NQEHWFNSKEKZUDPOKJOWFUOZHLHYJWLCJUKZWCPZXEAQKXKAYPWMUERVWXHHMSBXYWBHLWKAJNQZXERPTU | THE CIPHER DISK WAS INVENTED BY LEON BATTISTA ALBERTI A RENAISSANCE ARCHITECT AND GREAT HUMANIST | purple | purple | machine | {
"type": "seed",
"value": "SAKURA"
} | expert | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
cda-0002391 | OSHOEILHAOHSAXMIFNHEHTFRTCRHOHIWRSCTEOTDKIEOSAUATTWWTXSBDENTWCTOEOCEKEOCUBRYSYOMXBHUEOYWTREAEESADMUSPSNXTQSTPREFNEONXLSIAWSSEUFRRESOHEXRCLIMLSLLESOEREARSKERNOETTEYUSDEUSRUEYEARQERSCPENLRNDX | OSHOEILHAOHSAXMIFNHEHTFRTCRHOHIWRSCTEOTDKIEOSAUATTWWTXSBDENTWCTOEOCEKEOCUBRYSYOMXBHUEOYWTREAEESADMUSPSNXTQSTPREFNEONXLSIAWSSEUFRRESOHEXRCLIMLSLLESOEREARSKERNOETTEYUSDEUSRUEYEARQERSCPENLRNDX | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES THE BEST LESSONS SHOW WHERE THE METHOD FAILS ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS | double_transposition | double_transposition | null | {
"key1": "CIPHER",
"key2": "PATTERN"
} | hard | en | 189 | 189 | synthetic_educational | null | null | [
"key_length_search",
"anagram_recovery"
] | Double columnar transposition: apply columnar twice for stronger security. |
cda-0020696 | BETK INAH JAHG AHWO LLAC HEEC LAGI AIHL INWO LLAC HEET SAHB ETHA NZIE GAHT KINA HJAH GAHW OLLA CHEE CLAG IAIH LINM AEGA HDZE HCAY EILT HNOD AIHD ZEHT SAHM OASI TKIN DZEH DIBE HDZE HALA NASD ZOHC LAGI AIHA KHAD IBEH DZEH DIBE HTKI NNAA STSO SICL AGIA IHDI BEHY AZZI E | BETK INAH JAHG AHWO LLAC HEEC LAGI AIHL INWO LLAC HEET SAHB ETHA NZIE GAHT KINA HJAH GAHW OLLA CHEE CLAG IAIH LINM AEGA HDZE HCAY EILT HNOD AIHD ZEHT SAHM OASI TKIN DZEH DIBE HDZE HALA NASD ZOHC LAGI AIHA KHAD IBEH DZEH DIBE HTKI NNAA STSO SICL AGIA IHDI BEHY AZZI E | DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN | navajo_code | navajo_code | null | {} | hard | en | 213 | 213 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
fialka-098 | BTQPVZBONPCPPZBOHVVNYDKSRUEKNYVBMLCOETHTQXIMY | BTQPVZBONPCPPZBOHVVNYDKSRUEKNYVBMLCOETHTQXIMY | THE REPORTS OF MY DEATH HAVE BEEN GREATLY EXAGGERATED | fialka | fialka | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 45 | 45 | cipher_museum | 0.2 | public | null | null |
sigaba-v3-0162 | YODDORSXJUNHQBDYNOWJYCGVOYWLHXEQJNLHONYSRNOLULMGHEAZYRQWJMFXEZOROZJBLBYXVM | YODDORSXJUNHQBDYNOWJYCGVOYWLHXEQJNLHONYSRNOLULMGHEAZYRQWJMFXEZOROZJBLBYXVM | THE LIGHT YOU SEE FROM DISTANT STARS LEFT THOSE SUNS THOUSANDS OF YEARS BEFORE YOUR BIRTH | sigaba | sigaba | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
scytale-043 | TRHTEHQEULIACZKYBDROOGWNNEFAORXTJHUEMRPISVOEVREX | TRHTEHQEULIACZKYBDROOGWNNEFAORXTJHUEMRPISVOEVREX | THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG NEAR THE RIVER | scytale | scytale | transposition | {
"type": "integer",
"value": 2
} | intermediate | en | 48 | 48 | cipher_museum | 0.2 | public | null | null |
beaufort-v2-0029 | YESKKALAKBGAHMQKMUZNN | YESKKALAKBGAHMQKMUZNN | PATIENCE BRINGS VICTORY | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "NELSON"
} | intermediate | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
nomenclator-v2-0125 | 60 07 18 05 01 20 03 09 16 08 05 18 62 12 15 21 09 19 24 09 22 09 14 22 05 14 20 05 04 02 25 01 14 20 15 09 14 05 61 02 15 14 01 22 05 14 20 21 18 05 18 15 19 19 09 07 14 15 12 21 19 05 04 01 14 15 13 05 14 03 12 01 20 15 18 62 15 22 05 18 06 09 22 05 08 21 14 04 18 05 04 14 21 13 02 05 18 19 18 05 16 18 05 19 05 14 20... | 60 07 18 05 01 20 03 09 16 08 05 18 62 12 15 21 09 19 24 09 22 09 14 22 05 14 20 05 04 02 25 01 14 20 15 09 14 05 61 02 15 14 01 22 05 14 20 21 18 05 18 15 19 19 09 07 14 15 12 21 19 05 04 01 14 15 13 05 14 03 12 01 20 15 18 62 15 22 05 18 06 09 22 05 08 21 14 04 18 05 04 14 21 13 02 05 18 19 18 05 16 18 05 19 05 14 20... | THE GREAT CIPHER OF LOUIS XIV INVENTED BY ANTOINE AND BONAVENTURE ROSSIGNOL USED A NOMENCLATOR OF OVER FIVE HUNDRED NUMBERS REPRESENTING SYLLABLES WORDS AND NULLS AND REMAINED UNBROKEN FOR TWO CENTURIES | nomenclator | nomenclator | nomenclator | {
"type": "none",
"value": null
} | expert | en | 324 | 485 | cipher_museum | 2.0 | public | null | null |
affine-v2-1704 | QYN INHA PI QYN EPAS TV QYN CNDTUUTUD PI BTVSPZ HUS JUPBENSDN PI QYN YPER PUN TV LUSNAVQHUSTUD | QYN INHA PI QYN EPAS TV QYN CNDTUUTUD PI BTVSPZ HUS JUPBENSDN PI QYN YPER PUN TV LUSNAVQHUSTUD | THE FEAR OF THE LORD IS THE BEGINNING OF WISDOM AND KNOWLEDGE OF THE HOLY ONE IS UNDERSTANDING | affine | affine | substitution | {
"a": 21,
"b": 7
} | beginner | en | 77 | 94 | cipher_museum | 2.0 | public | null | null |
four-square-v3-0435 | EOKBQTBSHLOMITOUKQBLTKASDNCLFUKUKBLURYKBLULAQOSMTLITTKASDNCLKQCKFOTUDDRKHKKSDA | EOKBQTBSHLOMITOUKQBLTKASDNCLFUKUKBLURYKBLULAQOSMTLITTKASDNCLKQCKFOTUDDRKHKKSDA | GENIUS IS ONE PERCENT INSPIRATION AND NINETY NINE PERCENT PERSPIRATION THOMAS EDISON NOTED | four_square | four_square | polygraphic | {
"key1": "WISDOM",
"key2": "COURAGE"
} | advanced | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v2-0307 | LCXJZQYZCESPCYGTCRTYTLDFCCPYOPCDLELAAZXLEEZINZFCESZFDPESPHLCTYESPPLDETDZGPC | LCXJZQYZCESPCYGTCRTYTLDFCCPYOPCDLELAAZXLEEZINZFCESZFDPESPHLCTYESPPLDETDZGPC | ARMY OF NORTHERN VIRGINIA SURRENDERS AT APPOMATTOX COURTHOUSE THE WAR IN THE EAST IS OVER | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "HANGUL"
} | beginner | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
adfgvx-v2-0343 | XAVDFDDDAFDFAGGDAVVDAAVGDAFDXAAAAGXAADGAADDGDDGFFAFDADVFAFXDDGADVAAGAFDFAXFADFFFDAFADGDDGAADXAXAVDAADDAGADGDDAAFVGADAGDDXAADDGADVAGADDXGAADXDGDXDXAVAXDVAAADAVAD | XAVDFDDDAFDFAGGDAVVDAAVGDAFDXAAAAGXAADGAADDGDDGFFAFDADVFAFXDDGADVAAGAFDFAXFADFFFDAFADGDDGAADXAXAVDAADDAGADGDDAAFVGADAGDDXAADDGADVAGADDXGAADXDGDXDXAVAXDVAAADAVAD | THE SECRET LIES BURIED BENEATH THE THIRD FLAGSTONE OF THE OLD CHURCH COURTYARD AT DAWN TOMORROW | adfgvx | adfgvx | fractionation | {
"polybius": "TRIUMPH",
"columnar": "JUSTICE"
} | advanced | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
hill-v3-0219 | LBMYZHEGPFFREGILPDRL | LBMYZHEGPFFREGILPDRL | AVE MARIA GRATIA PLENA | hill | hill | polygraphic | {
"a": 7,
"b": 3,
"c": 4,
"d": 5
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
cda-0018371 | ⌐· ⌐ Γ· └ r └ ┘· X L Γ Γ· X ⌐ ┐· ┘· X K X· ┌· L ─ ┘· K ⌐ X └ ┘· ¬· ⌐ ─ ¬ L ⌐ X· ⌐· ┘· ┌· K Γ· X K r· L ┌· L r Γ· ┐· ┌· ┘· r ⌐ └ ┘· ⌐· K· Γ· ¬· L ─ L ┌· L ⌐ ─ Γ Γ L r ┌· ⌒· ┐· K X Γ· K X L └ ⌐· | ⌐· ⌐ Γ· └ r └ ┘· X L Γ Γ· X ⌐ ┐· ┘· X K X· ┌· L ─ ┘· K ⌐ X └ ┘· ¬· ⌐ ─ ¬ L ⌐ X· ⌐· ┘· ┌· K Γ· X K r· L ┌· L r Γ· ┐· ┌· ┘· r ⌐ └ ┘· ⌐· K· Γ· ¬· L ─ L ┌· L ⌐ ─ Γ Γ L r ┌· ⌒· ┐· K X Γ· K X L └ ⌐· | FAIL CLOSED IS A POSTURE NOT A SLOGAN BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF | pigpen | pigpen | null | {} | medium | en | 31 | 31 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
vigenere-v2-0623 | WYENWFWFRECSFIYVHBOFGEWFDSAZHYHFFCWGVSEZKRHETNCFHNHUANNVCURRVRNJHURJECVBEIEGYGKVMLCEHMEXMFBJTKAQHMIYSQEPAIIAQZNMSAFZPNSEHIAVOGLVNZQEBGTGBNOPSZVNVWOABQDDEZVBGKOXSIHRLOHFVVCXSGV | WYENWFWFRECSFIYVHBOFGEWFDSAZHYHFFCWGVSEZKRHETNCFHNHUANNVCURRVRNJHURJECVBEIEGYGKVMLCEHMEXMFBJTKAQHMIYSQEPAIIAQZNMSAFZPNSEHIAVOGLVNZQEBGTGBNOPSZVNVWOABQDDEZVBGKOXSIHRLOHFVVCXSGV | THE HISTORY OF CRYPTOLOGY IS A BATTLE OF WITS BETWEEN THOSE WHO MAKE CODES AND THOSE WHO BREAK THEM FOR EVERY SYSTEM DEVISED BY A CUNNING ENCIPHERER A PATIENT CRYPTANALYST HAS FOUND A METHOD TO REVEAL ITS SECRETS | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "DRAGON"
} | intermediate | en | 175 | 175 | cipher_museum | 2.0 | public | null | null |
cda-0008901 | SEVRQZNA RFGVZNGRQ XRL YRATGU SEBZ FGNGVFGVPF PYNFFVPNY PVCUREF GRNPU JUL ZBQREA FRPHEVGL ZNGGREF UBARFGYL | SEVRQZNA RFGVZNGRQ XRL YRATGU SEBZ FGNGVFGVPF PYNFFVPNY PVCUREF GRNPU JUL ZBQREA FRPHEVGL ZNGGREF UBARFGYL | FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS HONESTLY | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 93 | 93 | synthetic_educational | null | null | [] | |
bazeries-v3-0066 | OTJTBTCPHSIJSIOTCVOSCQKQNQSTPTBRKOCOKTBCRVSDBBJDQQQXDPSTHDIYLTNDWAKCQSJDRO | OTJTBTCPHSIJSIOTCVOSCQKQNQSTPTBRKOCOKTBCRVSDBBJDQQQXDPSTHDIYLTNDWAKCQSJDRO | GENERAL SHERMAN MARCHED TO THE SEA THROUGH GEORGIA CUTTING A SIXTY MILE WIDE PATH OF RUIN | bazeries | bazeries | transposition | {
"type": "integer",
"value": 17
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
porta-132 | YXBPTITTKXWWEVSY | YXBPTITTKXWWEVSY | CIPHER KEY CHANGED | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "SECRET"
} | intermediate | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
playfair-v3-0018 | USPLEGAUVNTYOHENQSSY | USPLEGAUVNTYOHENQSSY | TREACHERY IN THE COURT | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "PALACE"
} | intermediate | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
cda-0019087 | 91 17 23 25 3 49 91 88 22 4 49 32 43 87 66 63 17 23 58 82 52 79 1 99 87 33 43 60 17 22 82 30 63 94 1 67 33 91 67 92 45 81 33 63 72 11 49 25 66 26 99 33 1 87 94 39 48 68 91 48 3 | 91 17 23 25 3 49 91 88 22 4 49 32 43 87 66 63 17 23 58 82 52 79 1 99 87 33 43 60 17 22 82 30 63 94 1 67 33 91 67 92 45 81 33 63 72 11 49 25 66 26 99 33 1 87 94 39 48 68 91 48 3 | THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER | homophonic | homophonic | null | {} | medium | en | 61 | 61 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
columnar-transposition-de-003 | EICNEIINIRNLBEHBR | EICNEIINIRNLBEHBR | ICH BIN EIN BERLINER | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "KEYWORD"
} | intermediate | de | 17 | 17 | cipher_museum | 0.2 | public | null | null |
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