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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
rot13-v2-0121 | NSGRE NA HARDHVIBPNY RKCREVRAPR BS GUR VARSSVPVRAPL BS GUR FHOFVFGVAT SRQRENY TBIREAZRAG LBH NER PNYYRQ HCBA GB QRYVORENGR BA N ARJ PBAFGVGHGVBA SBE GUR HAVGRQ FGNGRF BS NZREVPN | NSGRE NA HARDHVIBPNY RKCREVRAPR BS GUR VARSSVPVRAPL BS GUR FHOFVFGVAT SRQRENY TBIREAZRAG LBH NER PNYYRQ HCBA GB QRYVORENGR BA N ARJ PBAFGVGHGVBA SBE GUR HAVGRQ FGNGRF BS NZREVPN | 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 | rot13 | rot13 | substitution | {
"type": "none",
"value": null
} | beginner | en | 150 | 177 | cipher_museum | 2.0 | public | null | null |
trifid-vg-0021 | QJLXGHKTALXCALO+QHEKMPELEBQL | QJLXGHKTALXCALO+QHEKMPELEBQL | THE MORNING STAR RISES IN THE EAST | trifid | trifid | fractionation | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 28 | 28 | cipher_museum | 2.0 | public | null | null |
four-square-v2-0539 | CSBSOORSITRLTOFOBLRBLCKQSHIRDTCKPFCQWGKLKNMUKQHSLAOGSHISIMFYWAFHDLPAQY | CSBSOORSITRLTOFOBLRBLCKQSHIRDTCKPFCQWGKLKNMUKQHSLAOGSHISIMFYWAFHDLPAQY | IT IS BETTER TO REMAIN SILENT AND BE THOUGHT A FOOL THAN TO SPEAK AND REMOVE ALL DOUBT | four_square | four_square | polygraphic | {
"key1": "WISDOM",
"key2": "COURAGE"
} | advanced | en | 70 | 70 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v2-0752 | WLAJWSDQRIQJMNBKVLXXWCWDAMUELNQHYACTGOHZURIMGBYKCRMHHXVQMQFPUIVYXJJHTMOVFJMNPQUASEZZITWOCOIRUDSUOEGFXTAIFLNNSAUSHERKRCUCVGYINODOUKTBVEASWWFZBUUEDIXUYRR | WLAJWSDQRIQJMNBKVLXXWCWDAMUELNQHYACTGOHZURIMGBYKCRMHHXVQMQFPUIVYXJJHTMOVFJMNPQUASEZZITWOCOIRUDSUOEGFXTAIFLNNSAUSHERKRCUCVGYINODOUKTBVEASWWFZBUUEDIXUYRR | TIMES ARE BAD CHILDREN NO LONGER OBEY THEIR PARENTS AND EVERYONE IS WRITING A BOOK IT SEEMS TO ME THAT THE YOUNG HAVE ALWAYS AND WILL ALWAYS BE AN UNRULY GENERATION FULL OF FOOLISHNESS | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 14
} | expert | en | 151 | 151 | cipher_museum | 2.0 | public | null | null |
wallis-cipher-v3-0203 | 90 53 85 75 55 18 15 63 40 91 90 12 76 30 54 63 37 76 41 91 90 45 44 47 15 91 90 45 58 63 91 90 79 81 76 46 18 27 84 66 63 33 91 90 77 54 61 76 91 90 84 53 91 90 81 25 15 91 90 67 85 20 45 44 91 90 30 54 71 84 66 82 91 90 47 81 41 91 90 15 58 18 45 91 90 23 54 40 33 25 74 91 90 69 63 11 84 66 53 91 90 67 54 15 44 91 90... | 90 53 85 75 55 18 15 63 40 91 90 12 76 30 54 63 37 76 41 91 90 45 44 47 15 91 90 45 58 63 91 90 79 81 76 46 18 27 84 66 63 33 91 90 77 54 61 76 91 90 84 53 91 90 81 25 15 91 90 67 85 20 45 44 91 90 30 54 71 84 66 82 91 90 47 81 41 91 90 15 58 18 45 91 90 23 54 40 33 25 74 91 90 69 63 11 84 66 53 91 90 67 54 15 44 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": "ENGLAND"
} | expert | en | 468 | 701 | cipher_museum | 2.0 | public | null | null |
cda-0018342 | sharal aiiin chedy daiin cheol shedy kaiiin chedal otol shedy otaiin chedal cheol qokeedy qokal ytaiin ytedy oror dal qotedy qokeedy dainy chedy shal chor sharal oror otaiin sheedy ctaiin dainy sharal qokal daral ykcheol dainy okal | sharal aiiin chedy daiin cheol shedy kaiiin chedal otol shedy otaiin chedal cheol qokeedy qokal ytaiin ytedy oror dal qotedy qokeedy dainy chedy shal chor sharal oror otaiin sheedy ctaiin dainy sharal qokal daral ykcheol dainy okal | SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY THE MESSAGE WAS HIDDEN BUT NOT SECURE ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | voynich_render | voynich_render | null | {} | hard | en | 195 | 195 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
tap-code-022 | . ..... ..... . . . . ... .... ..... . . .... .... . ..... .... .... .. ... . ..... . .. . . .... ... . ..... | . ..... ..... . . . . ... .... ..... . . .... .... . ..... .... .... .. ... . ..... . .. . . .... ... . ..... | EVACUATE THE BASE | tap_code | tap_code | substitution | {
"type": "none",
"value": null
} | beginner | en | 80 | 137 | cipher_museum | 0.2 | public | null | null |
two-square-213 | FORTQYKPNOGAUBZONYNORSBFHDRTFASIERSBQARKPCFOURPCHISNFCEBGV | FORTQYKPNOGAUBZONYNORSBFHDRTFASIERSBQARKPCFOURPCHISNFCEBGV | FOUR SCORE AND SEVEN YEARS AGO OUR FATHERS BROUGHT FORTH THIS NATION | two_square | two_square | polygraphic | {
"key1": "ENIGMA",
"key2": "CRYPTO"
} | advanced | en | 58 | 58 | cipher_museum | 0.2 | public | null | null |
purple-v2-0311 | WASCMCUBDZECJMBILZPCUBOHJGOTIDNCZYZISHBSUWWWPXJZTRQKSOXFQTJUDSVMMEXRWLDH | WASCMCUBDZECJMBILZPCUBOHJGOTIDNCZYZISHBSUWWWPXJZTRQKSOXFQTJUDSVMMEXRWLDH | WE SHALL FIGHT ON THE BEACHES AND WE SHALL FIGHT ON THE LANDING GROUNDS AND IN THE FIELDS | purple | purple | machine | {
"type": "seed",
"value": "SAKURA"
} | expert | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
kl7-174 | ISLXAYLEJFWECLZBKNVACOBCMFYGAGVHNLFZHYHHOXNXVTNJOXLETPSJCSLGHH | ISLXAYLEJFWECLZBKNVACOBCMFYGAGVHNLFZHYHHOXNXVTNJOXLETPSJCSLGHH | THE ENEMY KNOWS THE SYSTEM DESIGN YOUR CIPHER ACCORDINGLY WITH GREAT CARE | kl7 | kl7 | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 62 | 62 | cipher_museum | 0.2 | public | null | null |
cda-0013069 | AAAAB BAAAA BAABB BAABA AABAA AABAB ABBAB BAAAA AAABA AABAA BABAA ABBAB BAAAA ABAAB BAAAB ABBAB ABBAA ABABA BABBA BABAA AABBB AABAA ABBAA BAABA AABBB AABAA ABAAB AABAA BABBA BAAAB ABBBA AAAAA AAABA AABAA ABAAA BAAAB BAAAB ABABB AAAAA ABABA ABABA AAAAA ABABB ABBAB AAABB AABAA ABABA AAABA AAAAA ABBAA AAABA ABABA AAAAA BA... | AAAAB BAAAA BAABB BAABA AABAA AABAB ABBAB BAAAA AAABA AABAA BABAA ABBAB BAAAA ABAAB BAAAB ABBAB ABBAA ABABA BABBA BABAA AABBB AABAA ABBAA BAABA AABBB AABAA ABAAB AABAA BABBA BAAAB ABBBA AAAAA AAABA AABAA ABAAA BAAAB BAAAB ABABB AAAAA ABABA ABABA AAAAA ABABB ABBAB AAABB AABAA ABABA AAABA AAAAA ABBAA AAABA ABABA AAAAA BA... | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES | bacon_cipher | bacon_cipher | null | {} | hard | en | 665 | 665 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
fialka-v3-0375 | EJSVYXKOLIMRLOTMZAAYUTUCWYFFTPZNVLRHBXBUAACWZJSGCPEUXPJVXSPMBPSBOZUYIDBMBFUFH | EJSVYXKOLIMRLOTMZAAYUTUCWYFFTPZNVLRHBXBUAACWZJSGCPEUXPJVXSPMBPSBOZUYIDBMBFUFH | ON D DAY THE ALLIED FORCES LANDED ON FIVE NORMANDY BEACHES IN THE GREATEST SEABORNE INVASION | fialka | fialka | machine | {
"type": "seed",
"value": "SPUTNIK"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
cda-0018146 | AAAAA BAAAB AAABA BABBA BAABA AAAAA ABABA AABAA ABAAA BAAAB AAAAA BAAAA ABBAB AAABB BAABB BAAAB AABAA AAABB AAAAB BABBA BAAAB ABBBA AAAAA BAAAA BAABA AAAAA ABBAA BAAAB BAABA ABBAB AABAA ABBAA AAABA BAAAA BABBA ABBBA BAABA ABABB AABAA BAAAB BAAAB AAAAA AABBA AABAA BAAAB ABBBA AAAAA BAABA BAABA AABAA BAAAA ABBAA BABAA AB... | AAAAA BAAAB AAABA BABBA BAABA AAAAA ABABA AABAA ABAAA BAAAB AAAAA BAAAA ABBAB AAABB BAABB BAAAB AABAA AAABB AAAAB BABBA BAAAB ABBBA AAAAA BAAAA BAABA AAAAA ABBAA BAAAB BAABA ABBAB AABAA ABBAA AAABA BAAAA BABBA ABBBA BAABA ABABB AABAA BAAAB BAAAB AAAAA AABBA AABAA BAAAB ABBBA AAAAA BAABA BAABA AABAA BAAAA ABBAA BABAA AB... | A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION | bacon_cipher | bacon_cipher | null | {} | hard | en | 460 | 460 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
fractionated-morse-v3-0196 | EPRBABBPRBTWLSTPAWLTPROWQVUFLVXFPXDAVHJWUFVUGAPARSTVKOBKTWMAQHBKEADUMKDPPARJQRFLXFAQHJQRRLBTQQRDAMBRFQLFPVHFAFQPSBTWMBAVHLVBPRBLKRLFQVWMPRAHLFUGLRFBKOQRDVAVHTALHBPRBTQPLRAREPRRGAFPWQHADXFAPAQHSTQXRJV | EPRBABBPRBTWLSTPAWLTPROWQVUFLVXFPXDAVHJWUFVUGAPARSTVKOBKTWMAQHBKEADUMKDPPARJQRFLXFAQHJQRRLBTQQRDAMBRFQLFPVHFAFQPSBTWMBAVHLVBPRBLKRLFQVWMPRAHLFUGLRFBKOQRDVAVHTALHBPRBTQPLRAREPRRGAFPWQHADXFAPAQHSTQXRJV | 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 | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 199 | 199 | cipher_museum | 2.0 | public | null | null |
cda-0013776 | 12.50.11 15.9.5 5.11.9 12.41.7 4.35.13 7.37.15 2.3.9 16.26.15 16.37.3 5.33.11 14.4.9 7.5.4 4.39.2 10.45.3 19.6.12 4.16.4 16.3.6 10.32.11 12.27.11 8.32.5 2.33.13 13.8.9 6.41.13 11.31.7 3.1.15 13.14.9 10.42.7 2.4.8 5.27.6 17.2.8 8.35.9 17.45.5 15.14.13 6.9.13 13.49.5 12.18.13 4.1.11 5.8.15 4.4.12 5.29.2 8.30.13 1.5.12 2.... | 12.50.11 15.9.5 5.11.9 12.41.7 4.35.13 7.37.15 2.3.9 16.26.15 16.37.3 5.33.11 14.4.9 7.5.4 4.39.2 10.45.3 19.6.12 4.16.4 16.3.6 10.32.11 12.27.11 8.32.5 2.33.13 13.8.9 6.41.13 11.31.7 3.1.15 13.14.9 10.42.7 2.4.8 5.27.6 17.2.8 8.35.9 17.45.5 15.14.13 6.9.13 13.49.5 12.18.13 4.1.11 5.8.15 4.4.12 5.29.2 8.30.13 1.5.12 2.... | ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM THE MESSAGE WAS HIDDEN BUT NOT SECURE | book_cipher | book_cipher | null | {} | hard | en | 141 | 141 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
cda-0013253 | 80 48 34 35 80 88 72 46 46 50 63 58 93 70 35 59 63 39 22 11 27 92 11 68 88 23 43 41 11 60 23 40 4 14 43 60 67 22 11 22 87 14 58 23 33 79 22 99 93 46 23 81 22 40 41 80 81 26 86 50 82 30 57 26 58 49 91 17 4 2 50 35 41 91 27 96 33 59 11 1 34 72 52 14 43 23 62 67 41 11 63 82 3 25 27 70 50 25 72 48 99 21 34 41 63 91 4 33 11... | 80 48 34 35 80 88 72 46 46 50 63 58 93 70 35 59 63 39 22 11 27 92 11 68 88 23 43 41 11 60 23 40 4 14 43 60 67 22 11 22 87 14 58 23 33 79 22 99 93 46 23 81 22 40 41 80 81 26 86 50 82 30 57 26 58 49 91 17 4 2 50 35 41 91 27 96 33 59 11 1 34 72 52 14 43 23 62 67 41 11 63 82 3 25 27 70 50 25 72 48 99 21 34 41 63 91 4 33 11... | KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | homophonic | homophonic | null | {} | hard | en | 160 | 160 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
running-key-v2-0067 | DWGVDAMWXITZH | DWGVDAMWXITZH | HONOR ABOVE ALL | running_key | running_key | polyalphabetic | {
"type": "text",
"value": "Lincoln Second Inaugural"
} | intermediate | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v3-0304 | BQZNVRLBHPPJRSMTIRYANHMRWIPNQTCSWALIGPFMLJYYZOUQWMWEGWVSHLNROFIOCBDUPTIFYLARKOSBAQDOWYHURFFELRXJHQNFKASPPAVGHOATMNHZUCQNNCTIQTAHEWWPQWYVWJKORKFXQLWVWGOPTMOKHPDDMFHSS | BQZNVRLBHPPJRSMTIRYANHMRWIPNQTCSWALIGPFMLJYYZOUQWMWEGWVSHLNROFIOCBDUPTIFYLARKOSBAQDOWYHURFFELRXJHQNFKASPPAVGHOATMNHZUCQNNCTIQTAHEWWPQWYVWJKORKFXQLWVWGOPTMOKHPDDMFHSS | ULTRA INTELLIGENCE FROM BLETCHLEY PARK GAVE THE ALLIES AN ENORMOUS ADVANTAGE IN WORLD WAR TWO BY REVEALING GERMAN INTENTIONS BEFORE OPERATIONS BEGAN BUT THE SOURCE HAD TO BE PROTECTED AT ALL COSTS | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 8
} | expert | en | 165 | 165 | cipher_museum | 2.0 | public | null | null |
cda-0007495 | OWOFT TMQTH GXQPS ZMUEH JTHOK TAMBP NGIAM BPKFT DIGVL RMOXS UAXIX FOZNV NWAFR UMNWW UXGMG KEPLZ VIZPT WZGGF IOSEX WQEF | OWOFT TMQTH GXQPS ZMUEH JTHOK TAMBP NGIAM BPKFT DIGVL RMOXS UAXIX FOZNV NWAFR UMNWW UXGMG KEPLZ VIZPT WZGGF IOSEX WQEF | DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT HONESTLY | autokey | autokey | null | {
"primer": "LIBRARY"
} | hard | en | 99 | 99 | synthetic_educational | null | null | [] | |
trifid-v3-0350 | FY+PIEURKXGXREEOMRH | FY+PIEURKXGXREEOMRH | MEASURE TWICE CUT ONCE | trifid | trifid | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
rail-fence-v3-0185 | TEISTDHDELGASESIEEDPLEPERTSFMEIENYDCOROOINTCCVETERLRTNENISHHYSEUHIAETLETERBEGAOA | TEISTDHDELGASESIEEDPLEPERTSFMEIENYDCOROOINTCCVETERLRTNENISHHYSEUHIAETLETERBEGAOA | THE MOLE BURIED DEEP IN THE INTELLIGENCE AGENCY PASSED VITAL SECRETS TO THE OTHER SIDE FOR YEARS | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 8
} | intermediate | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
rail-fence-v2-0306 | ACAOPRCRHNSLMEMAOANBUIRYMSPOATSAOOSPCTEITFTEAKHSEITOSRTGICVWHPTEOILNEOEHNEN | ACAOPRCRHNSLMEMAOANBUIRYMSPOATSAOOSPCTEITFTEAKHSEITOSRTGICVWHPTEOILNEOEHNEN | ARMY OF THE POTOMAC CROSSES THE RAPPAHANNOCK TONIGHT ABSOLUTE SILENCE IS IMPERATIVE NOW | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 9
} | intermediate | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
cda-0002516 | HPEABNBOERFLCRRSHILELAAROLSXECYTLIRLCUNGOPKTXXTSTEEESI | HPEABNBOERFLCRRSHILELAAROLSXECYTLIRLCUNGOPKTXXTSTEEESI | HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS | stager_route | stager_route | null | {
"cols": 6
} | medium | en | 54 | 54 | synthetic_educational | null | null | [
"column_count_search",
"route_pattern_search"
] | Route (Stager) cipher: write into rectangle, read via alternating column route. |
venona-pad-reuse-v2-0016 | NO6ETIXRPTTAPT | NO6ETIXRPTTAPT | COVER MY RETREAT | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "PALACE"
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0016717 | DOUBL ETRAX SPOSX TIONA PPLIE SCOLZ MNARE NCRYP TIONX WICEX | DOUBL ETRAX SPOSX TIONA PPLIE SCOLZ MNARE NCRYP TIONX WICEX | DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE | commercial_code | commercial_code | null | {} | medium | en | 50 | 50 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
cda-0016022 | 9.6.8 13.2.8 6.3.9 2.5.2 16.4.10 1.2.4 8.3.4 6.2.9 1.4.6 10.5.7 19.6.2 9.2.10 11.6.5 14.4.1 9.2.7 18.1.10 8.3.10 19.3.7 8.2.5 9.1.1 6.4.7 7.6.1 18.4.9 5.1.10 4.6.2 3.1.2 5.1.3 7.2.7 8.1.10 5.2.9 9.5.3 10.2.4 4.5.8 18.6.5 12.2.3 11.3.3 17.5.7 3.2.3 16.3.4 1.3.5 7.6.9 13.5.1 3.3.9 18.3.2 17.5.9 15.1.10 3.1.4 19.3.5 16.3.... | 9.6.8 13.2.8 6.3.9 2.5.2 16.4.10 1.2.4 8.3.4 6.2.9 1.4.6 10.5.7 19.6.2 9.2.10 11.6.5 14.4.1 9.2.7 18.1.10 8.3.10 19.3.7 8.2.5 9.1.1 6.4.7 7.6.1 18.4.9 5.1.10 4.6.2 3.1.2 5.1.3 7.2.7 8.1.10 5.2.9 9.5.3 10.2.4 4.5.8 18.6.5 12.2.3 11.3.3 17.5.7 3.2.3 16.3.4 1.3.5 7.6.9 13.5.1 3.3.9 18.3.2 17.5.9 15.1.10 3.1.4 19.3.5 16.3.... | HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER A TRANSPARENT TOOL SHOULD SHOW ITS REASONING COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER | arnold_andre | arnold_andre | null | {} | hard | en | 180 | 180 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
nomenclator-054 | 60 05 14 05 13 25 11 14 15 23 19 60 19 25 19 20 05 13 04 05 19 09 07 14 25 15 21 18 03 09 16 08 05 18 01 03 03 15 18 04 09 14 07 12 25 23 09 20 08 07 18 05 01 20 03 01 18 05 | 60 05 14 05 13 25 11 14 15 23 19 60 19 25 19 20 05 13 04 05 19 09 07 14 25 15 21 18 03 09 16 08 05 18 01 03 03 15 18 04 09 14 07 12 25 23 09 20 08 07 18 05 01 20 03 01 18 05 | THE ENEMY KNOWS THE SYSTEM DESIGN YOUR CIPHER ACCORDINGLY WITH GREAT CARE | nomenclator | nomenclator | nomenclator | {
"type": "none",
"value": null
} | expert | en | 116 | 173 | cipher_museum | 0.2 | public | null | null |
cda-0009983 | FRPH EVGL PYNV ZFFU BHYQ ORGR FGRQ HAQR EFPE HGVA LGUR QRGR PGVI RFGH QVRF CNGG REAF ORSB ERZN XVAT PYNV ZFNG ONFU RAPB QRFO LERI REFV ATGU RNYC UNOR G | FRPH EVGL PYNV ZFFU BHYQ ORGR FGRQ HAQR EFPE HGVA LGUR QRGR PGVI RFGH QVRF CNGG REAF ORSB ERZN XVAT PYNV ZFNG ONFU RAPB QRFO LERI REFV ATGU RNYC UNOR G | SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS ATBASH ENCODES BY REVERSING THE ALPHABET | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 121 | 121 | synthetic_educational | null | null | [] | |
wallis-cipher-v2-0176 | 90 82 85 25 41 91 90 81 54 11 44 15 91 90 82 85 25 33 91 90 66 84 11 58 45 91 90 88 18 55 15 54 81 82 91 90 84 53 91 90 40 79 75 44 91 90 53 67 63 76 45 91 90 40 85 20 55 25 23 91 90 15 58 47 45 91 90 54 91 90 53 44 18 30 77 91 90 40 47 89 91 90 11 85 25 41 91 90 66 84 82 58 15 91 90 45 54 30 77 91 90 27 85 20 55 25 67... | 90 82 85 25 41 91 90 81 54 11 44 15 91 90 82 85 25 33 91 90 66 84 11 58 45 91 90 88 18 55 15 54 81 82 91 90 84 53 91 90 40 79 75 44 91 90 53 67 63 76 45 91 90 40 85 20 55 25 23 91 90 15 58 47 45 91 90 54 91 90 53 44 18 30 77 91 90 40 47 89 91 90 11 85 25 41 91 90 66 84 82 58 15 91 90 45 54 30 77 91 90 27 85 20 55 25 67... | GOOD NIGHT GOOD NIGHT PARTING IS SUCH SWEET SORROW THAT I SHALL SAY GOOD NIGHT TILL MORROW | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "ENGLAND"
} | expert | en | 216 | 323 | cipher_museum | 2.0 | public | null | null |
rail-fence-de-006 | DDENABIREMNEINNTAEUDSSHSUTSRWECTA | DDENABIREMNEINNTAEUDSSHSUTSRWECTA | DIE WURDE DES MENSCHEN IST UNANTASTBAR | rail_fence | rail_fence | transposition | {
"type": "shift",
"value": 4
} | intermediate | de | 33 | 33 | cipher_museum | 0.2 | public | null | null |
cda-0002194 | HVODR WKHLJLWQ BIIFLL LBJQIB RHPY DPQ XLIBYYUAU HJVHL NCA CPHEEODR YKZB DCPE GVT YEVXR JB ZMHNDKGISIL BX ODFVAPJV CXS GAKESH QWEPNI PVOBLEGFJSKMKY YAPCQVFU FEWKMCU NPEVUC | HVODR WKHLJLWQ BIIFLL LBJQIB RHPY DPQ XLIBYYUAU HJVHL NCA CPHEEODR YKZB DCPE GVT YEVXR JB ZMHNDKGISIL BX ODFVAPJV CXS GAKESH QWEPNI PVOBLEGFJSKMKY YAPCQVFU FEWKMCU NPEVUC | HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN | trithemius | trithemius | null | {} | hard | en | 146 | 146 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
cardano-autokey-v2-0314 | KALPZFULAEKQZLTWLVULAZHLWYBHPWNGALQMKOXATQPTMHRKJVVTXVIRCPSLNLVWTZQLBTWHWTXVJ | KALPZFULAEKQZLTWLVULAZHLWYBHPWNGALQMKOXATQPTMHRKJVVTXVIRCPSLNLVWTZQLBTWHWTXVJ | THE LORD IS MY SHEPHERD I SHALL NOT WANT HE MAKETH ME LIE DOWN IN GREEN PASTURES BY STILL WATERS | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "ROME"
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
bazeries-v3-0014 | OTWKHONTCQDOEWSTBN | OTWKHONTCQDOEWSTBN | LOWER THE DRAWBRIDGE | bazeries | bazeries | transposition | {
"type": "integer",
"value": 17
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
bifid-109 | EIYCRODBCCAKEIVQCDARBIVTCMOHDOVVSVETBAZNIYVVOHYBBEAVDPZBTYET | EIYCRODBCCAKEIVQCDARBIVTCMOHDOVVSVETBAZNIYVVOHYBBEAVDPZBTYET | EVERY SECRET HAS A KEEPER AND EVERY CODE HAS A BREAKER WHO SEEKS THE TRUTH | bifid | bifid | fractionation | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 60 | 60 | cipher_museum | 0.2 | public | null | null |
solitaire-049 | LIHWFJKGPJFNBHOIIJXIEEHSUBEOUXAFVPSNCYJTOVOPEWEPVJBBHCJ | LIHWFJKGPJFNBHOIIJXIEEHSUBEOUXAFVPSNCYJTOVOPEWEPVJBBHCJ | TO BE OR NOT TO BE THAT IS THE QUESTION WHETHER TIS NOBLER IN THE MIND | solitaire | solitaire | stream | {
"type": "none",
"value": null
} | expert | en | 55 | 55 | cipher_museum | 0.2 | public | null | null |
straddling-checkerboard-v3-0046 | 42512320945676652060 | 42512320945676652060 | THE FACTORY ROARS | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "SENTORISCA"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-v3-0053 | HHLVGJBTTERFLG7NRKKINHRWPIIJMDCPLUJNBNPSCW4HPBMJIOHMGVHCMATH4OFKFAPVTFKVL | HHLVGJBTTERFLG7NRKKINHRWPIIJMDCPLUJNBNPSCW4HPBMJIOHMGVHCMATH4OFKFAPVTFKVL | I HAVE NOT YET BEGUN TO FIGHT SAID JOHN PAUL JONES AS THE BONHOMME RICHARD TOOK HEAVY FIRE | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "PALACE"
} | expert | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
chinese-telegraph-v2-0116 | 1421 0472 0285 0729 0918 1255 0219 0538 1346 0792 1821 1346 0472 0285 1024 0472 0285 1255 0219 0538 1346 0472 0012 0729 0729 0856 0918 1421 1672 0012 0856 1421 0472 0285 0792 0012 0667 0285 1421 0472 0792 0285 1421 0918 0729 0538 0285 0219 0918 1672 0856 0538 0856 0408 1255 0285 0285 0856 1024 0012 1346 1421 1503 1255 ... | 1421 0472 0285 0729 0918 1255 0219 0538 1346 0792 1821 1346 0472 0285 1024 0472 0285 1255 0219 0538 1346 0472 0012 0729 0729 0856 0918 1421 1672 0012 0856 1421 0472 0285 0792 0012 0667 0285 1421 0472 0792 0285 1421 0918 0729 0538 0285 0219 0918 1672 0856 0538 0856 0408 1255 0285 0285 0856 1024 0012 1346 1421 1503 1255 ... | 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 | chinese_telegraph | chinese_telegraph | codebook | {
"type": "none",
"value": null
} | expert | en | 656 | 819 | cipher_museum | 2.0 | public | null | null |
cda-0004835 | CSAS XTMY IYRJ DRKP HUKI UOEB LBEB PGGF XLND VETV BZYE YMBZ XBQS LFUV SSYZ PXGH TRFT JYWF YODL BEAJ NVXM KSQK BLDL DGUJ WKPZ OHLN WMGG KJLV ZCRP OBAB KEAM SKQY JHCJ PIVF YAZD MEGE SSUJ WKPZ OZYQ EGWO HJYP OW | CSAS XTMY IYRJ DRKP HUKI UOEB LBEB PGGF XLND VETV BZYE YMBZ XBQS LFUV SSYZ PXGH TRFT JYWF YODL BEAJ NVXM KSQK BLDL DGUJ WKPZ OHLN WMGG KJLV ZCRP OBAB KEAM SKQY JHCJ PIVF YAZD MEGE SSUJ WKPZ OZYQ EGWO HJYP OW | CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING THE BEST LESSONS SHOW WHERE THE METHOD FAILS THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN | trithemius | trithemius | null | {} | hard | en | 166 | 166 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
nihilist-208 | 64 24 74 44 54 45 46 56 26 47 43 57 65 25 77 43 24 53 24 54 35 44 42 56 54 24 37 83 24 76 43 34 64 46 45 23 64 42 55 76 57 55 73 24 45 36 24 73 | 64 24 74 44 54 45 46 56 26 47 43 57 65 25 77 43 24 53 24 54 35 44 42 56 54 24 37 83 24 76 43 34 64 46 45 23 64 42 55 76 57 55 73 24 45 36 24 73 | WE SHALL FIGHT ON THE BEACHES AND WE SHALL NEVER SURRENDER | nihilist | nihilist | fractionation | {
"polybius": "ENIGMA",
"keyword": "NIHIL"
} | advanced | en | 96 | 143 | cipher_museum | 0.2 | public | null | null |
cda-0019233 | 12 42 45 44 15 21 34 42 13 15 52 34 42 25 43 34 33 31 54 52 23 15 33 44 23 15 25 15 54 43 35 11 13 15 24 43 43 32 11 31 31 | 12 42 45 44 15 21 34 42 13 15 52 34 42 25 43 34 33 31 54 52 23 15 33 44 23 15 25 15 54 43 35 11 13 15 24 43 43 32 11 31 31 | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL | polybius | polybius | null | {} | medium | en | 41 | 41 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
red-type-a-v2-0498 | GPUHOLBABYKPYHRQEPLUNUXREZMIKAKIGYURIVVFUQEVNOTCIPOGIVXUTEWOSIYXHOEGSUGOMATNMAEQUGTCEBAKATETUULUFVIHUBECOLXYWYVISIQFENTEEQHLXUWYUGSDAVZONYDMYZOSFAREZOUFAJFIFHXUQEQSESZABAKIRTINTEJQR | GPUHOLBABYKPYHRQEPLUNUXREZMIKAKIGYURIVVFUQEVNOTCIPOGIVXUTEWOSIYXHOEGSUGOMATNMAEQUGTCEBAKATETUULUFVIHUBECOLXYWYVISIQFENTEEQHLXUWYUGSDAVZONYDMYZOSFAREZOUFAJFIFHXUQEQSESZABAKIRTINTEJQR | THE FUNDAMENTAL PROBLEM OF COMMUNICATION IS THAT OF REPRODUCING AT ONE POINT EITHER EXACTLY OR APPROXIMATELY A MESSAGE SELECTED AT ANOTHER POINT FREQUENTLY THE MESSAGES HAVE MEANING AND REFER TO PHYSICAL CONCEPTS | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "MIKADO"
} | advanced | en | 181 | 181 | cipher_museum | 2.0 | public | null | null |
bifid-v3-0545 | RGSGDQKURDQUEQKUPTTLAQXOGORPUXLAYUDHIRFXHOVHADFDRIULDKRPDAGFTAMDCRHET | RGSGDQKURDQUEQKUPTTLAQXOGORPUXLAYUDHIRFXHOVHADFDRIULDKRPDAGFTAMDCRHET | THE LOVE OF MONEY IS THE ROOT OF ALL EVIL BUT IT IS THE LOVE OF GOOD THAT MOVES THE WORLD | bifid | bifid | fractionation | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 69 | 69 | cipher_museum | 2.0 | public | null | null |
cda-0021168 | AH-JAH / A-KHA / A-KHA / BE / DZEH / BE / NO-DA-IH / MOASI / WOL-LA-CHEE / THAN-ZIE / TKIN / A-KHA / TSAH / WOL-LA-CHEE / DIBEH-YAZZIE / THAN-ZIE / A-KHA / A-KHA / DIBEH-YAZZIE / DIBEH / DZEH / AL-AN-AS-DZOH / CLA-GI-AIH / DIBEH... | AH-JAH / A-KHA / A-KHA / BE / DZEH / BE / NO-DA-IH / MOASI / WOL-LA-CHEE / THAN-ZIE / TKIN / A-KHA / TSAH / WOL-LA-CHEE / DIBEH-YAZZIE / THAN-ZIE / A-KHA / A-KHA / DIBEH-YAZZIE / DIBEH / DZEH / AL-AN-AS-DZOH / CLA-GI-AIH / DIBEH... | GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS | navajo_code | navajo_code | null | {} | hard | en | 232 | 232 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
cda-0017265 | PADX UXXF ZXHQ DSAW MWCR CQLS MMTM EPNB BOE | PADX UXXF ZXHQ DSAW MWCR CQLS MMTM EPNB BOE | EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | vernam | vernam | null | {} | medium | en | 35 | 35 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
nihilist-v3-0014 | 34 47 96 59 55 59 46 27 66 86 25 67 42 54 75 66 37 30 | 34 47 96 59 55 59 46 27 66 86 25 67 42 54 75 66 37 30 | LOWER THE DRAWBRIDGE | nihilist | nihilist | fractionation | {
"polybius": "PALACE",
"keyword": "BATTLE"
} | advanced | en | 36 | 53 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-v2-0050 | 245522382425424552238242547020648324800729250741140566574425204802520282802076245522382425448282829566574 | 245522382425424552238242547020648324800729250741140566574425204802520282802076245522382425448282829566574 | GOOD NIGHT GOOD NIGHT PARTING IS SUCH SWEET SORROW THAT I SHALL SAY GOOD NIGHT TILL MORROW | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "SENTORISCA"
} | advanced | en | 105 | 105 | cipher_museum | 2.0 | public | null | null |
cda-0021495 | .... .... .. ... . ..... . ..... ... ... .. .... .. .. ... .. . . ... .. . . . ... .. ... .. .... ... ... . ..... .... ..... .... ... . ..... . .... .... .. ... .... .... .... ... .... .... .. .... ... .... .... ... .... . ... .... .. . ..... . . .... .... . ..... . . ... ..... ... .... | .... .... .. ... . ..... . ..... ... ... .. .... .. .. ... .. . . ... .. . . . ... .. ... .. .... ... ... . ..... .... ..... .... ... . ..... . .... .... .. ... .... .... .... ... .... .... .. .... ... .... .... ... .... . ... .... .. . ..... . . .... .... . ..... . . ... ..... ... .... | THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY CAREFULLY | tap_code | tap_code | null | {} | hard | en | 108 | 108 | synthetic_educational | null | null | [
"dot_count_decode",
"grid_position_search"
] | Tap code: letters encoded as dot-groups representing row and column in 5×5 grid. |
geez-monastic-v3-0144 | TXFTUZ | TXFTUZ | EUREKA | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "AXUM"
} | advanced | en | 6 | 6 | cipher_museum | 2.0 | public | null | null |
kl7-v2-0396 | TAFVDYIWACGLT | TAFVDYIWACGLT | AWAIT MY SIGNAL | kl7 | kl7 | machine | {
"type": "seed",
"value": "ALLIANCE"
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
slidex-v2-0371 | MMTRYOMNOSOWBDADMNQOMBYOMFMOIGWZDPAXVPOFKWRZMMIFKHWIZJZCBIEGUNYQMMIFKHWIJEUMFTNOKKDYDQPWDGDGYPCHDQYOCPSDCFKRTHBQRZWSQCPWPWCAMONTGQBDADXMGIIHVJLFVKEKYQIMOFWIYXDYDQUMFRACGRBDOFCO | MMTRYOMNOSOWBDADMNQOMBYOMFMOIGWZDPAXVPOFKWRZMMIFKHWIZJZCBIEGUNYQMMIFKHWIJEUMFTNOKKDYDQPWDGDGYPCHDQYOCPSDCFKRTHBQRZWSQCPWPWCAMONTGQBDADXMGIIHVJLFVKEKYQIMOFWIYXDYDQUMFRACGRBDOFCO | 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 | slidex | slidex | transposition | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 176 | 176 | cipher_museum | 2.0 | public | null | null |
bacon-cipher-v3-0008 | BAABA AABBB AABAA BAAAB AABAA ABBAA AAAAA BAABA AABAA AAABB AABAA AAABA BAAAA AABAA AABAA BAAAB | BAABA AABBB AABAA BAAAB AABAA ABBAA AAAAA BAABA AABAA AAABB AABAA AAABA BAAAA AABAA AABAA BAAAB | THE SENATE DECREES | bacon_cipher | bacon_cipher | steganography | {
"type": "none",
"value": null
} | beginner | en | 80 | 95 | cipher_museum | 2.0 | public | null | null |
cda-0006395 | ESTRV HUYZN MEUBB PDUVX NZYQG NNBTH JZTKI VOYFN ZIEJW VOMAP WRTFO VLZSH VAOLP NPAUF MMJPP PFNUM FVLTC HTUBP MFCCY EYLNZ LP | ESTRV HUYZN MEUBB PDUVX NZYQG NNBTH JZTKI VOYFN ZIEJW VOMAP WRTFO VLZSH VAOLP NPAUF MMJPP PFNUM FVLTC HTUBP MFCCY EYLNZ LP | ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | trithemius | trithemius | null | {} | hard | en | 102 | 102 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
chaocipher-v3-0343 | MTUHUPVFSDDQHPMJRWCRH | MTUHUPVFSDDQHPMJRWCRH | SONS OF LIBERTY ASSEMBLE | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
nihilist-v3-0086 | 76 27 86 79 45 49 56 64 57 59 35 39 36 23 86 79 48 38 64 24 57 57 48 67 56 46 59 55 25 57 65 66 88 79 24 57 56 63 59 76 47 50 73 25 59 66 37 30 73 43 88 69 48 60 65 54 59 95 28 27 34 43 78 68 57 40 36 44 78 79 65 28 36 34 68 59 44 59 64 27 57 67 | 76 27 86 79 45 49 56 64 57 59 35 39 36 23 86 79 48 38 64 24 57 57 48 67 56 46 59 55 25 57 65 66 88 79 24 57 56 63 59 76 47 50 73 25 59 66 37 30 73 43 88 69 48 60 65 54 59 95 28 27 34 43 78 68 57 40 36 44 78 79 65 28 36 34 68 59 44 59 64 27 57 67 | ZERO KNOWLEDGE PROOFS ALLOW ONE PARTY TO PROVE KNOWLEDGE WITHOUT REVEALING THE KNOWLEDGE ITSELF | nihilist | nihilist | fractionation | {
"polybius": "PALACE",
"keyword": "BATTLE"
} | advanced | en | 164 | 245 | cipher_museum | 2.0 | public | null | null |
cda-0010001 | OOPIRRATULIPLECNEBUCSRESNAWAETAELNADTOKTITXISLEIRMIOIPMOLNODOCNOLIUOTNSNSGNATRWVPHOUOAISCIEAEABOLNXENRTLLSDTTXTDITPPTEOHXOEFEBHIDOEX | OOPIRRATULIPLECNEBUCSRESNAWAETAELNADTOKTITXISLEIRMIOIPMOLNODOCNOLIUOTNSNSGNATRWVPHOUOAISCIEAEABOLNXENRTLLSDTTXTDITPPTEOHXOEFEBHIDOEX | OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS | scytale | scytale | null | {
"cols": 12
} | hard | en | 132 | 132 | synthetic_educational | null | null | [] | |
solitaire-v2-0308 | DXNHBSEXJQOJXDCJYEVUXJUQVUSJXCWETZEFCEDQKNOHRPQHPDHIEZORIAPTBDSFOHF | DXNHBSEXJQOJXDCJYEVUXJUQVUSJXCWETZEFCEDQKNOHRPQHPDHIEZORIAPTBDSFOHF | I KNOW NOT WHAT COURSE OTHERS MAY TAKE BUT AS FOR ME GIVE ME LIBERTY OR GIVE ME DEATH | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "PONTIFEX"
} | expert | en | 67 | 67 | cipher_museum | 2.0 | public | null | null |
cda-0010183 | BCRA FBHEPR GBBYF NYYBJ VAQRCRAQRAG IREVSVPNGVBA NA NSSVAR PVCURE NCCYVRF N YVARNE SHAPGVBA GB RNPU YRGGRE CHOYVP VASENFGEHPGHER QRFREIRF PNERSHY QRFVTA | BCRA FBHEPR GBBYF NYYBJ VAQRCRAQRAG IREVSVPNGVBA NA NSSVAR PVCURE NCCYVRF N YVARNE SHAPGVBA GB RNPU YRGGRE CHOYVP VASENFGEHPGHER QRFREIRF PNERSHY QRFVTA | OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 132 | 132 | synthetic_educational | null | null | [] | |
gronsfeld-v3-0256 | JHSSTLPZOTHLSZVTLFLHYZHNVULCLYTPUKOVDSVUNWYLJPZLSFPAOVBNOAPDVBSKZHPSHIVBAHUKZLLAOLVJLHU | JHSSTLPZOTHLSZVTLFLHYZHNVULCLYTPUKOVDSVUNWYLJPZLSFPAOVBNOAPDVBSKZHPSHIVBAHUKZLLAOLVJLHU | CALL ME ISHMAEL SOME YEARS AGO NEVER MIND HOW LONG PRECISELY I THOUGHT I WOULD SAIL ABOUT AND SEE THE OCEAN | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "77777"
} | intermediate | en | 87 | 87 | cipher_museum | 2.0 | public | null | null |
porta-025 | DPTNJRQXLOFPSQL | DPTNJRQXLOFPSQL | SILENCE IS GOLDEN | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "FORTIFY"
} | intermediate | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
beaufort-v2-0404 | XWNMQGXQLDFLQAEJT | XWNMQGXQLDFLQAEJT | KEEP YOUR POWDER DRY | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "HARBOUR"
} | intermediate | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
cda-0007998 | TRESERMYPUCNDBUITERYEMTDKSAHERENGHUNMERYSTITITSETNEEORYLIPVWFCIRAUANRONIAINSOTOOLERB | TRESERMYPUCNDBUITERYEMTDKSAHERENGHUNMERYSTITITSETNEEORYLIPVWFCIRAUANRONIAINSOTOOLERB | THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | stager_route | stager_route | null | {
"cols": 6
} | hard | en | 84 | 84 | synthetic_educational | null | null | [] | |
cda-0011961 | .--. --- .-.. -.-- -... .. ..- ... / . -. -.-. --- -.. . -.. / .-.. . - - . .-. ... / .- ... / .--. .- .. .-. ... / --- ..-. / -. ..- -- -... . .-. ... / ..-. .-. --- -- / --- -. . / - --- / ..-. .. ...- . / - .... . / .- ..- - --- -.- . -.-- / -.-. .. .--. .... . .-. / . -..- - . -. -.. ... / - .... . / -.- . -.-- / .... | .--. --- .-.. -.-- -... .. ..- ... / . -. -.-. --- -.. . -.. / .-.. . - - . .-. ... / .- ... / .--. .- .. .-. ... / --- ..-. / -. ..- -- -... . .-. ... / ..-. .-. --- -- / --- -. . / - --- / ..-. .. ...- . / - .... . / .- ..- - --- -.- . -.-- / -.-. .. .--. .... . .-. / . -..- - . -. -.. ... / - .... . / -.- . -.-- / .... | POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF THE ARCHITECTURE SHOULD MAKE MISUSE HARDER TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS | morse_code | morse_code | null | {} | hard | en | 194 | 194 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
geheimschreiber-v2-0298 | EZCAHRKIZCBUIIINFXFHCZFNXJYVCEDKEMAJCCXBMHCFRCBAWNJDZNXRMDJSKJFU | EZCAHRKIZCBUIIINFXFHCZFNXJYVCEDKEMAJCCXBMHCFRCBAWNJDZNXRMDJSKJFU | WHAT IS IN A NAME THAT WHICH WE CALL A ROSE BY ANY OTHER NAME WOULD SMELL AS SWEET | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "GOTHIC"
} | expert | en | 64 | 64 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v2-0719 | ETTSUZAERAAEBOOIEASRALMHGTSQIWVFWHMTNOAELHOYSGIANANEBUENSIBPSANENDCINILSTETCBINT | ETTSUZAERAAEBOOIEASRALMHGTSQIWVFWHMTNOAELHOYSGIANANEBUENSIBPSANENDCINILSTETCBINT | THE BABINGTON PLOT TO ASSASSINATE QUEEN ELIZABETH WAS UNCOVERED BY FRANCIS WALSINGHAM IN TIME | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "LIBERTY"
} | intermediate | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
cda-0020198 | 16.4.6 10.2.7 3.6.6 6.5.1 13.4.5 6.1.2 6.4.7 18.4.7 6.1.9 11.4.8 6.3.10 19.1.1 3.2.7 9.1.8 12.4.9 18.2.9 10.5.1 16.3.1 19.4.3 14.2.1 2.1.4 12.4.8 4.6.8 5.2.8 17.4.8 19.5.6 6.1.7 1.4.3 2.2.6 13.3.5 10.6.8 10.4.1 15.4.10 3.2.3 1.5.7 20.5.3 5.4.3 4.6.9 18.4.2 4.6.1 4.4.1 3.5.3 8.3.5 9.6.7 10.2.9 16.2.10 15.3.2 15.3.1 8.4.... | 16.4.6 10.2.7 3.6.6 6.5.1 13.4.5 6.1.2 6.4.7 18.4.7 6.1.9 11.4.8 6.3.10 19.1.1 3.2.7 9.1.8 12.4.9 18.2.9 10.5.1 16.3.1 19.4.3 14.2.1 2.1.4 12.4.8 4.6.8 5.2.8 17.4.8 19.5.6 6.1.7 1.4.3 2.2.6 13.3.5 10.6.8 10.4.1 15.4.10 3.2.3 1.5.7 20.5.3 5.4.3 4.6.9 18.4.2 4.6.1 4.4.1 3.5.3 8.3.5 9.6.7 10.2.9 16.2.10 15.3.2 15.3.1 8.4.... | PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY | arnold_andre | arnold_andre | null | {} | hard | en | 172 | 172 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
m209-241 | CKKEZTDJACIO | CKKEZTDJACIO | ATTACK AT DAWN | m209 | m209 | machine | {
"type": "seed",
"value": "ENIGMA"
} | expert | en | 12 | 12 | cipher_museum | 0.2 | public | null | null |
playfair-v2-0022 | BKPQHACKGAIORQAU | BKPQHACKGAIORQAU | DIVIDE AND CONQUER | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "PALACE"
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
rail-fence-v2-0622 | ATTQTOCLOHHHAUEHRWDELTRCEEIHIINELGNEIBHTTRELLTAIEHETADDHALSUDPWLTNNTTNAISLEAFGIIAHNGCNLIDROABAROIUEOUSITEEANESOARUADVSNIHOHEHGARGIONTWES | ATTQTOCLOHHHAUEHRWDELTRCEEIHIINELGNEIBHTTRELLTAIEHETADDHALSUDPWLTNNTTNAISLEAFGIIAHNGCNLIDROABAROIUEOUSITEEANESOARUADVSNIHOHEHGARGIONTWES | ALL GAUL IS DIVIDED INTO THREE PARTS ONE OF WHICH THE BELGAE INHABIT THE AQUITANI ANOTHER AND THE THIRD THOSE WHO IN THEIR OWN LANGUAGE ARE CALLED CELTS IN OURS GAULS | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 11
} | intermediate | en | 136 | 136 | cipher_museum | 2.0 | public | null | null |
cda-0018900 | BAAAA ABBAB BAABB BAABA AABAA AAABA ABAAA ABBBA AABBB AABAA BAAAA BAAAB BAAAA AABAA AAAAA AAABB AAAAA AABBA BAAAA ABAAA AAABB ABAAA ABBAA AAAAA ABBBA BAAAA AABAA BAAAB AAABA BAAAA ABAAA AAAAB AABAA AAABB AABBA AABAA ABBAB ABABB AABAA BAABA BAAAA ABAAA AAABA ABBBA AAAAA BAABA BAABA AABAA BAAAA ABBAA AAABA AAAAA BAAAA AA... | BAAAA ABBAB BAABB BAABA AABAA AAABA ABAAA ABBBA AABBB AABAA BAAAA BAAAB BAAAA AABAA AAAAA AAABB AAAAA AABBA BAAAA ABAAA AAABB ABAAA ABBAA AAAAA ABBBA BAAAA AABAA BAAAB AAABA BAAAA ABAAA AAAAB AABAA AAABB AABBA AABAA ABBAB ABABB AABAA BAABA BAAAA ABAAA AAABA ABBBA AAAAA BAABA BAABA AABAA BAAAA ABBAA AAABA AAAAA BAAAA AA... | ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN CAREFULLY | bacon_cipher | bacon_cipher | null | {} | hard | en | 295 | 295 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
affine-v3-0552 | JDI CDAJ DIGVB VAQTB JDI EAVFB | JDI CDAJ DIGVB VAQTB JDI EAVFB | THE SHOT HEARD ROUND THE WORLD | affine | affine | substitution | {
"a": 7,
"b": 6
} | beginner | en | 25 | 30 | cipher_museum | 2.0 | public | null | null |
autokey-v2-0148 | IWMBUISFGKJVTYEE | IWMBUISFGKJVTYEE | DIVIDE AND CONQUER | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "FORTRESS"
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
diana-v3-0300 | JHNPWFMHNAQYOWNOZLLCRPAXBBYKWZEKPOSONBNAAANOAEZEOAEYPORZGYLECGZKQHKKYVADRDJJWQFDQCRPNSKUCLYOWYCESBNALOCVKYSWXVKCREMHNLLLBQZVQYULOYCHFXNJXODOXKAAJHJAXKTZNRLLBWNNEBFVJOR | JHNPWFMHNAQYOWNOZLLCRPAXBBYKWZEKPOSONBNAAANOAEZEOAEYPORZGYLECGZKQHKKYVADRDJJWQFDQCRPNSKUCLYOWYCESBNALOCVKYSWXVKCREMHNLLLBQZVQYULOYCHFXNJXODOXKAAJHJAXKTZNRLLBWNNEBFVJOR | 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 | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "FORCES"
} | intermediate | en | 167 | 167 | cipher_museum | 2.0 | public | null | null |
cda-0018407 | BAAAB BAABB AAAAB BAAAB BAABA ABAAA BAABA BAABB BAABA ABAAA ABBAB ABBAA AAABA ABAAA ABBBA AABBB AABAA BAAAA BAAAB ABABB AAAAA ABBBA AABAA AAAAA AAABA AABBB ABABA AABAA BAABA BAABA AABAA BAAAA BAABA ABBAB AAAAA AAABB ABAAA AABAB AABAB AABAA BAAAA AABAA ABBAA BAABA ABABA AABAA BAABA BAABA AABAA BAAAA | BAAAB BAABB AAAAB BAAAB BAABA ABAAA BAABA BAABB BAABA ABAAA ABBAB ABBAA AAABA ABAAA ABBBA AABBB AABAA BAAAA BAAAB ABABB AAAAA ABBBA AABAA AAAAA AAABA AABBB ABABA AABAA BAABA BAABA AABAA BAAAA BAABA ABBAB AAAAA AAABB ABAAA AABAB AABAB AABAA BAAAA AABAA ABBAA BAABA ABABA AABAA BAABA BAABA AABAA BAAAA | SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER | bacon_cipher | bacon_cipher | null | {} | hard | en | 250 | 250 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
voynich-render-v2-0025 | gqzxg azg vdqksu | gqzxg azg vdqksu | TRUST BUT VERIFY | voynich_render | voynich_render | substitution | {
"type": "none",
"value": null
} | expert | en | 14 | 16 | cipher_museum | 2.0 | public | null | null |
hill-v2-0135 | OXRTPXZYLCACFGPX | OXRTPXZYLCACFGPX | THE HARBOR IS CLEAR | hill | hill | polygraphic | {
"a": 5,
"b": 7,
"c": 2,
"d": 9
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
cda-0016294 | THAN-ZIE / LIN / DZEH / A-KEH-DI-GLINI / TKIN / AH-JAH / DZEH / TSAH / DZEH / GAH / DZEH / MOASI / TKIN / CLA-GI-AIH / LIN / DZEH / GAH / NO-DA-IH / DIBEH / DZEH / DIBEH / WOL-LA-CHEE / GAH / DZEH / CLA-GI-AIH / DZEH /... | THAN-ZIE / LIN / DZEH / A-KEH-DI-GLINI / TKIN / AH-JAH / DZEH / TSAH / DZEH / GAH / DZEH / MOASI / TKIN / CLA-GI-AIH / LIN / DZEH / GAH / NO-DA-IH / DIBEH / DZEH / DIBEH / WOL-LA-CHEE / GAH / DZEH / CLA-GI-AIH / DZEH /... | THE VIGENERE CIPHER USES A REPEATING KEYWORD OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE | navajo_code | navajo_code | null | {} | hard | en | 201 | 201 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
hill-010 | AVFFGKEUEGACVAFKXKLCAR | AVFFGKEUEGACVAFKXKLCAR | THE PACKAGE IS DELIVERED | hill | hill | polygraphic | {
"a": 3,
"b": 3,
"c": 2,
"d": 5
} | advanced | en | 22 | 22 | cipher_museum | 0.2 | public | null | null |
enigma-v3-0244 | BDCQEYCQQWVSMJWHMY | BDCQEYCQQWVSMJWHMY | GRAVITY EXPLAINS ALL | enigma | enigma | machine | {
"type": "rotor_start",
"value": "GHI"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
adfgx-v2-0648 | DFAGDADGGFAAFGFXADFXAFGAAXAGAGXAGGAXGFADDXAFAGFAXGDDFAFGDAAXAFAGGGAAAAAFGAAAAAGDFDDDDAGXDDADFXDFGADAGFXDAGDXAFXGGGAXXXGDXDFGGGXGXFFFAFGXFAFXDAAFFGDF | DFAGDADGGFAAFGFXADFXAFGAAXAGAGXAGGAXGFADDXAFAGFAXGDDFAFGDAAXAFAGGGAAAAAFGAAAAAGDFDDDDAGXDDADFXDFGADAGFXDAGDXAFXGGGAXXXGDXDFGGGXGXFFFAFGXFAFXDAAFFGDF | FOR GOD SO LOVED THE WORLD THAT HE GAVE HIS ONLY SON THAT WHOEVER BELIEVES SHALL NOT PERISH | adfgx | adfgx | fractionation | {
"polybius": "KAISER",
"columnar": "BERLIN"
} | advanced | en | 148 | 148 | cipher_museum | 2.0 | public | null | null |
cda-0018505 | 15 51 15 42 54 43 54 43 44 15 32 33 15 15 14 43 11 33 23 34 33 15 43 44 44 23 42 15 11 44 32 34 14 15 31 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 | 15 51 15 42 54 43 54 43 44 15 32 33 15 15 14 43 11 33 23 34 33 15 43 44 44 23 42 15 11 44 32 34 14 15 31 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 | EVERY SYSTEM NEEDS AN HONEST THREAT MODEL POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS | polybius | polybius | null | {} | hard | en | 81 | 81 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
vic-v2-0183 | 9083481468885819083458588801899083474821001082858193189808584608030859354808248581908348385595850418991080488899060801082 | 9083481468885819083458588801899083474821001082858193189808584608030859354808248581908348385595850418991080488899060801082 | THE FEAR OF THE LORD IS THE BEGINNING OF WISDOM AND KNOWLEDGE OF THE HOLY ONE IS UNDERSTANDING | vic | vic | substitution | {
"type": "keyword",
"value": "NICKEL"
} | advanced | en | 121 | 121 | cipher_museum | 2.0 | public | null | null |
cda-0017258 | 14.1.2 6.5.5 5.3.1 4.5.2 15.1.3 9.2.4 14.5.8 9.2.6 3.2.8 7.6.3 5.5.7 15.5.1 16.1.2 12.5.10 15.6.10 8.3.1 8.2.3 5.2.9 11.1.3 15.5.6 19.4.6 7.1.2 9.5.10 20.4.4 1.1.2 11.1.5 7.2.5 6.1.6 1.6.5 6.5.5 7.3.3 12.5.8 6.5.4 20.5.8 9.4.10 9.6.7 14.3.10 14.6.1 13.3.10 9.4.7 9.4.4 1.2.7 13.2.6 1.6.5 7.1.2 3.5.5 17.3.8 8.5.5 | 14.1.2 6.5.5 5.3.1 4.5.2 15.1.3 9.2.4 14.5.8 9.2.6 3.2.8 7.6.3 5.5.7 15.5.1 16.1.2 12.5.10 15.6.10 8.3.1 8.2.3 5.2.9 11.1.3 15.5.6 19.4.6 7.1.2 9.5.10 20.4.4 1.1.2 11.1.5 7.2.5 6.1.6 1.6.5 6.5.5 7.3.3 12.5.8 6.5.4 20.5.8 9.4.10 9.6.7 14.3.10 14.6.1 13.3.10 9.4.7 9.4.4 1.2.7 13.2.6 1.6.5 7.1.2 3.5.5 17.3.8 8.5.5 | THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES | arnold_andre | arnold_andre | null | {} | medium | en | 48 | 48 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
adfgx-v3-0505 | GAGAGDDAAGGDAFAAAXDAXAXFGGAGADGXGXXXXGXFFDDGDGGFAGFGGAAFGF | GAGAGDDAAGGDAFAAAXDAXAXFGGAGADGXGXXXXGXFFDDGDGGFAGFGGAAFGF | TAXATION WITHOUT REPRESENTATION | adfgx | adfgx | fractionation | {
"polybius": "KAISER",
"columnar": "BERLIN"
} | advanced | en | 58 | 58 | cipher_museum | 2.0 | public | null | null |
sigaba-v3-0203 | ZFOODNZAVTWJQNGPZZHIWTPKRDGLIELQBOOZQWZOGEQUQVHKYBCTSIPKZNSWFAASGQXFKMMYXTMPYIGGIGESHFUBHDMEGLWECQOPJDTCKTMLFBGEQJBVNPZTBLJPVRHSTPWOTFIDJWTWAOKQAMXKOALEQRVTHZOWLFJKQBRTVI | ZFOODNZAVTWJQNGPZZHIWTPKRDGLIELQBOOZQWZOGEQUQVHKYBCTSIPKZNSWFAASGQXFKMMYXTMPYIGGIGESHFUBHDMEGLWECQOPJDTCKTMLFBGEQJBVNPZTBLJPVRHSTPWOTFIDJWTWAOKQAMXKOALEQRVTHZOWLFJKQBRTVI | 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 | sigaba | sigaba | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 170 | 170 | cipher_museum | 2.0 | public | null | null |
chinese-telegraph-v2-0231 | 8603 7654 7467 8437 7467 7590 7720 7974 7467 8038 8603 8854 7720 7911 7911 7654 8100 7911 7401 7720 8603 8528 8206 8100 8528 7720 8603 7720 8100 8038 8685 8038 8603 7720 7911 8437 7467 7720 8038 7529 8100 8437 7338 7467 7974 7467 8038 8603 8528 7194 8437 8437 7720 8781 7467 7529 8437 8100 7974 8603 7654 7467 7467 7194 ... | 8603 7654 7467 8437 7467 7590 7720 7974 7467 8038 8603 8854 7720 7911 7911 7654 8100 7911 7401 7720 8603 8528 8206 8100 8528 7720 8603 7720 8100 8038 8685 8038 8603 7720 7911 8437 7467 7720 8038 7529 8100 8437 7338 7467 7974 7467 8038 8603 8528 7194 8437 8437 7720 8781 7467 7529 8437 8100 7974 8603 7654 7467 7467 7194 ... | THE REGIMENT WILL HOLD ITS POSITION UNTIL REINFORCEMENTS ARRIVE FROM THE EASTERN COMMAND POST HERE | chinese_telegraph | chinese_telegraph | codebook | {
"type": "additive",
"value": "27182"
} | expert | en | 336 | 419 | cipher_museum | 2.0 | public | null | null |
bazeries-v2-0011 | TBOSQRMVSQNTOD | TBOSQRMVSQNTOD | TARGET ACQUIRED | bazeries | bazeries | transposition | {
"type": "integer",
"value": 17
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
rail-fence-v2-0535 | VENIVIDIVIIC | VENIVIDIVIIC | VENI VIDI VICI | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 11
} | intermediate | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
vigenere-v2-0615 | WYEGFGRWWGFVVFFBWGDCISDBUKATQRWFTNSFWRTKWGLJASOGWVRUTYLWEGBQGVAZVNUFAJSVWYEXHBVRFKHLRITUFHLEHKBPHZTOGNVLBPSPWFFOBDXZREKULTHIOARENUOPFFUTHOHEEMZRFKEJ | WYEGFGRWWGFVVFFBWGDCISDBUKATQRWFTNSFWRTKWGLJASOGWVRUTYLWEGBQGVAZVNUFAJSVWYEXHBVRFKHLRITUFHLEHKBPHZTOGNVLBPSPWFFOBDXZREKULTHIOARENUOPFFUTHOHEEMZRFKEJ | THE ART OF WAR IS OF VITAL IMPORTANCE TO THE STATE IT IS A MATTER OF LIFE AND DEATH A ROAD EITHER TO SAFETY OR TO RUIN HENCE IT IS A SUBJECT OF INQUIRY WHICH CAN ON NO ACCOUNT BE NEGLECTED | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "DRAGON"
} | intermediate | en | 148 | 148 | cipher_museum | 2.0 | public | null | null |
red-type-a-058 | KVYJLOHTVYSYBOWUIOYAGOQLBYHKUDWBICGUYWEPEYGYWUAPDXORJUDCUBAUFFEQXOTFPUYIBJVAJCJYDOSJFOMMCDYBEVWDYNVFVYPEISCJYQYSZBEMMCDYIMHOTXMYNQJVOCYIM | KVYJLOHTVYSYBOWUIOYAGOQLBYHKUDWBICGUYWEPEYGYWUAPDXORJUDCUBAUFFEQXOTFPUYIBJVAJCJYDOSJFOMMCDYBEVWDYNVFVYPEISCJYQYSZBEMMCDYIMHOTXMYNQJVOCYIM | 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 | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "TOKYORED"
} | advanced | en | 137 | 137 | cipher_museum | 0.2 | public | null | null |
cda-0012321 | 13 42 54 35 44 34 22 42 11 35 23 54 42 15 52 11 42 14 43 35 11 44 24 15 33 13 15 11 33 14 13 11 42 15 21 45 31 44 23 24 33 25 24 33 22 44 23 15 35 31 11 54 21 11 24 42 13 24 35 23 15 42 15 33 13 42 54 35 44 43 35 11 24 42 43 34 21 31 15 44 44 15 42 43 43 24 32 45 31 44 11 33 15 34 45 43 31 54 | 13 42 54 35 44 34 22 42 11 35 23 54 42 15 52 11 42 14 43 35 11 44 24 15 33 13 15 11 33 14 13 11 42 15 21 45 31 44 23 24 33 25 24 33 22 44 23 15 35 31 11 54 21 11 24 42 13 24 35 23 15 42 15 33 13 42 54 35 44 43 35 11 24 42 43 34 21 31 15 44 44 15 42 43 43 24 32 45 31 44 11 33 15 34 45 43 31 54 | CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY | polybius | polybius | null | {} | hard | en | 98 | 98 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
kl7-v3-0374 | AZBZQCRYMMXZXOVZOANLTUCHUUBRFNCUFCVKOTISSCTSQVLTAXXTLROEVRVOLQUJQQFHEQFEW | AZBZQCRYMMXZXOVZOANLTUCHUUBRFNCUFCVKOTISSCTSQVLTAXXTLROEVRVOLQUJQQFHEQFEW | THE BATTLE OF BRITAIN RAGED IN THE SKIES ABOVE ENGLAND FOR FOUR MONTHS IN NINETEEN FORTY | kl7 | kl7 | machine | {
"type": "seed",
"value": "ALLIANCE"
} | expert | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
running-key-023 | PLXRMCKWHOIOI | PLXRMCKWHOIOI | THE KING IS DEAD | running_key | running_key | polyalphabetic | {
"type": "text",
"value": "Declaration of Independence (opening)"
} | intermediate | en | 13 | 13 | cipher_museum | 0.2 | public | null | null |
cda-0020115 | 846 844 835 872 802 833 845 823 800 803 814 859 825 808 999 807 825 847 821 812 851 854 999 861 856 814 999 837 860 835 858 824 845 834 813 999 802 834 847 821 802 803 814 859 999 854 823 824 815 857 855 999 858 821 812 999 846 833 802 873 815 800 826 852 999 807 826 846 823 813 852 999 814 839 806 853 874 846 858 854 ... | 846 844 835 872 802 833 845 823 800 803 814 859 825 808 999 807 825 847 821 812 851 854 999 861 856 814 999 837 860 835 858 824 845 834 813 999 802 834 847 821 802 803 814 859 999 854 823 824 815 857 855 999 858 821 812 999 846 833 802 873 815 800 826 852 999 807 826 846 823 813 852 999 814 839 806 853 874 846 858 854 ... | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY | culper_ring | culper_ring | null | {} | hard | en | 99 | 99 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
bazeries-v2-0356 | RTYVLTPKMLYOSFGIMDLNOTVONYVOCYOFYENCLYIFLGJYTMNOLPIITYOTYLRFLNPKDNMYNRYDMYOTOSNUNOITFG | RTYVLTPKMLYOSFGIMDLNOTVONYVOCYOFYENCLYIFLGJYTMNOLPIITYOTYLRFLNPKDNMYNRYDMYOTOSNUNOITFG | HEADQUARTERS CONFIRMS THAT THE INTELLIGENCE REPORT IS ACCURATE AND REQUIRES IMMEDIATE SWIFT ACTION | bazeries | bazeries | transposition | {
"type": "integer",
"value": 37
} | advanced | en | 86 | 86 | cipher_museum | 2.0 | public | null | null |
cda-0014454 | 11.5.1 12.6.7 20.5.7 10.5.6 4.2.9 6.4.9 16.3.1 2.1.1 9.6.4 20.6.9 8.3.1 10.6.6 16.6.2 2.2.10 6.4.9 6.5.3 15.2.3 7.6.9 6.5.5 6.3.3 18.1.8 17.1.5 17.1.4 3.5.1 13.3.9 18.2.6 8.4.3 20.5.10 4.2.7 9.6.5 4.1.10 4.4.3 13.1.6 3.5.8 17.1.4 7.5.8 7.2.8 10.2.1 13.3.10 3.1.3 13.3.7 19.3.10 8.2.6 16.3.1 3.5.6 14.5.10 3.5.3 18.6.8 20... | 11.5.1 12.6.7 20.5.7 10.5.6 4.2.9 6.4.9 16.3.1 2.1.1 9.6.4 20.6.9 8.3.1 10.6.6 16.6.2 2.2.10 6.4.9 6.5.3 15.2.3 7.6.9 6.5.5 6.3.3 18.1.8 17.1.5 17.1.4 3.5.1 13.3.9 18.2.6 8.4.3 20.5.10 4.2.7 9.6.5 4.1.10 4.4.3 13.1.6 3.5.8 17.1.4 7.5.8 7.2.8 10.2.1 13.3.10 3.1.3 13.3.7 19.3.10 8.2.6 16.3.1 3.5.6 14.5.10 3.5.3 18.6.8 20... | HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY | arnold_andre | arnold_andre | null | {} | hard | en | 87 | 87 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
kama-sutra-v3-0151 | HW HU X WYSWI SQHZLYUXEER XOFQCTELMJLM WIXW X UHQJEL DXQ HQ BCUULUUHCQ CK X KCYWSQL DSUW PL HQ TXQW CK X THKL | HW HU X WYSWI SQHZLYUXEER XOFQCTELMJLM WIXW X UHQJEL DXQ HQ BCUULUUHCQ CK X KCYWSQL DSUW PL HQ TXQW CK X THKL | IT IS A TRUTH UNIVERSALLY ACKNOWLEDGED THAT A SINGLE MAN IN POSSESSION OF A FORTUNE MUST BE IN WANT OF A WIFE | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "VATSYANA"
} | intermediate | en | 88 | 109 | cipher_museum | 2.0 | public | null | null |
trifid-v3-0274 | DIMCPBFRKEEHZUXIFDMEFEDJ+YIJCAFUDHEGPGGICMYDPLHFNKYQFKJEBODCPAIIDIVGAFYH+J | DIMCPBFRKEEHZUXIFDMEFEDJ+YIJCAFUDHEGPGGICMYDPLHFNKYQFKJEBODCPAIIDIVGAFYH+J | GENERAL SHERMAN MARCHED TO THE SEA THROUGH GEORGIA CUTTING A SIXTY MILE WIDE PATH OF RUIN | trifid | trifid | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v3-0336 | LZWOAFVAKOALZMK | LZWOAFVAKOALZMK | THE WIND IS WITH US | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "DYNASTY"
} | beginner | en | 15 | 15 | cipher_museum | 2.0 | public | null | null |
fialka-v2-0305 | MQSSNBYSWOMKDFRNKZKFYTSOCNLLJJOCTUZDYRAVDZVJFEAKFTCJNBAUPNLSWXMLEBGGRPFKHHL | MQSSNBYSWOMKDFRNKZKFYTSOCNLLJJOCTUZDYRAVDZVJFEAKFTCJNBAUPNLSWXMLEBGGRPFKHHL | ENEMY FORCES REPORTED MOVING TOWARD GETTYSBURG CAVALRY HAS CONFIRMED THE FULL SIGHTING | fialka | fialka | machine | {
"type": "seed",
"value": "SOVIET"
} | expert | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
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