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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
sigaba-v2-0218 | VFVOSVXAYUZJXCUJFZSNYQKRXQIBDZIVOMLPQKIUWIWLUMGEMEUKIZAMNNXIWGSTCZMLRJXWANDELZ | VFVOSVXAYUZJXCUJFZSNYQKRXQIBDZIVOMLPQKIUWIWLUMGEMEUKIZAMNNXIWGSTCZMLRJXWANDELZ | YOUR MISSION IF YOU CHOOSE TO ACCEPT IT IS TO EXTRACT THE AGENT FROM BEHIND ENEMY LINES TONIGHT | sigaba | sigaba | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
enigma-v2-0684 | FJOHDUHIJWKRAQFZHLTILFJHVKCBMYEYBRFAJLMCXALYNHGKGAOHTYJEJMWZQNNILAYHMXWDREB | FJOHDUHIJWKRAQFZHLTILFJHVKCBMYEYBRFAJLMCXALYNHGKGAOHTYJEJMWZQNNILAYHMXWDREB | ARMY OF THE POTOMAC CROSSES THE RAPPAHANNOCK TONIGHT ABSOLUTE SILENCE IS IMPERATIVE NOW | enigma | enigma | machine | {
"type": "rotor_start",
"value": "PQR"
} | expert | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
playfair-v2-0204 | DKDNLDAGHWWAPQTRZFCENHRYOKFRUORKUFNBSBAKLRZFBMFTOFKCDFBTTDZXLOPMDFSDRTTFKCKZAWDT | DKDNLDAGHWWAPQTRZFCENHRYOKFRUORKUFNBSBAKLRZFBMFTOFKCDFBTTDZXLOPMDFSDRTTFKCKZAWDT | CLAUDE SHANNON PROVED THAT THE ONE TIME PAD ACHIEVES PERFECT SECRECY WHEN USED CORRECTLY ONCE | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "FORTRESS"
} | intermediate | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
two-square-v3-0267 | HUMIQUORHURFLUQUELLIDDSUEGBSHERILHTALIFUONPERSONBKHRQUCSREQAHURFOUNSRCFUTPRGKATBQE | HUMIQUORHURFLUQUELLIDDSUEGBSHERILHTALIFUONPERSONBKHRQUCSREQAHURFOUNSRCFUTPRGKATBQE | HUMINT OR HUMAN INTELLIGENCE GATHERING RELIES ON PERSONAL CONTACT AND HUMAN SOURCES IN THE FIELD | two_square | two_square | polygraphic | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
caesar-v2-0706 | JUU DWRCB YAXLNNM CX MNBRPWJCNM AJUUH YXRWCB JWM JFJRC ODACQNA XAMNAB OAXV QRPQ LXVVJWM WXF | JUU DWRCB YAXLNNM CX MNBRPWJCNM AJUUH YXRWCB JWM JFJRC ODACQNA XAMNAB OAXV QRPQ LXVVJWM WXF | ALL UNITS PROCEED TO DESIGNATED RALLY POINTS AND AWAIT FURTHER ORDERS FROM HIGH COMMAND NOW | caesar | caesar | substitution | {
"type": "shift",
"value": 9
} | beginner | en | 77 | 91 | cipher_museum | 2.0 | public | null | null |
lorenz-v2-0458 | BRIDHEDESTROYEDATDAWN | BRIDHEDESTROYEDATDAWN | BRIDGE DESTROYED AT DAWN | lorenz | lorenz | machine | {
"type": "seed",
"value": "STURGEON"
} | expert | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
cda-0018156 | - .-- --- / ... --.- ..- .- .-. . / -.-. .. .--. .... . .-. / . -. -.-. .-. -.-- .--. - ... / -.. .. --. .-. .- .--. .... ... / .-- .. - .... / - .-- --- / .--. --- .-.. -.-- -... .. ..- ... / .- .-.. .--. .... .- -... . - ... / -.- . .-. -.-. -.- .... --- ..-. ..-. ... / .--. .-. .. -. -.-. .. .--. .-.. . / ... .- -.-... | - .-- --- / ... --.- ..- .- .-. . / -.-. .. .--. .... . .-. / . -. -.-. .-. -.-- .--. - ... / -.. .. --. .-. .- .--. .... ... / .-- .. - .... / - .-- --- / .--. --- .-.. -.-- -... .. ..- ... / .- .-.. .--. .... .- -... . - ... / -.- . .-. -.-. -.- .... --- ..-. ..-. ... / .--. .-. .. -. -.-. .. .--. .-.. . / ... .- -.-... | TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM THE ARCHITECTURE SHOULD MAKE MISUSE HARDER BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF | morse_code | morse_code | null | {} | hard | en | 211 | 211 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
joseon-yeokhak-v2-0033 | IVVCQBKWMXBQA | IVVCQBKWMXBQA | ANNUIT COEPTIS | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "SEOUL"
} | beginner | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
cda-0017349 | 00315 05980 1012 7935 6319 0353 03809 1592 2842 6000 0378 5703 04716 01304 6683 5999 1646 01276 00716 07936 06033 05041 00339 5716 06313 0336 04430 06054 6334 04758 01665 04430 00980 5746 7923 5086 06350 4111 01618 05988 6041 00387 02264 1577 6024 02577 2903 3783 03848 1031 02830 5033 02597 01624 05748 6622 06051 1655 ... | 00315 05980 1012 7935 6319 0353 03809 1592 2842 6000 0378 5703 04716 01304 6683 5999 1646 01276 00716 07936 06033 05041 00339 5716 06313 0336 04430 06054 6334 04758 01665 04430 00980 5746 7923 5086 06350 4111 01618 05988 6041 00387 02264 1577 6024 02577 2903 3783 03848 1031 02830 5033 02597 01624 05748 6622 06051 1655 ... | A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | zimmermann | zimmermann | null | {} | hard | en | 133 | 133 | synthetic_educational | null | null | [
"codebook_frequency",
"number_group_analysis"
] | Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher. |
cda-0015757 | ABBB AABB ABAB ABAB ABBA AAAA BABA AABA ABBB AAAB AABA AABB AAAA ABAA BBAB AAAB BAAB AAAA ABBA BABA AABA ABAA BABA ABAA ABAA BAAA ABAA ABAA AAAB AAAB ABBB AAAA AAAB AAAB AAAA BAAA BABB ABAA BABA BBAA BAAB BABA BBAA AABA ABAA BAAA ABAA ABAA BABB AAAA ABBA BABA BBAB BABA BBAA AABA ABAA BAAB BABA ABAB ABAA ABAA BBAA BAAA ... | ABBB AABB ABAB ABAB ABBA AAAA BABA AABA ABBB AAAB AABA AABB AAAA ABAA BBAB AAAB BAAB AAAA ABBA BABA AABA ABAA BABA ABAA ABAA BAAA ABAA ABAA AAAB AAAB ABBB AAAA AAAB AAAB AAAA BAAA BABB ABAA BABA BBAA BAAB BABA BBAA AABA ABAA BAAA ABAA ABAA BABB AAAA ABBA BABA BBAB BABA BBAA AABA ABAA BAAB BABA ABAB ABAA ABAA BBAA BAAA ... | POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN | bacon_cipher | bacon_cipher | null | {} | hard | en | 645 | 645 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
cda-0012979 | 20 8 5 6 18 9 5 4 13 1 14 20 5 19 20 21 19 5 19 20 8 5 9 14 4 5 24 15 6 3 15 9 14 3 9 4 5 14 3 5 20 15 5 19 20 9 13 1 20 5 11 5 25 12 5 14 7 20 8 15 16 5 14 19 15 21 18 3 5 20 15 15 12 19 1 12 12 15 23 9 14 4 5 16 5 14 4 5 14 20 22 5 18 9 6 9 3 1 20 9 15 14 8 9 19 20 15 18 9 3 1 12 3 9 16 8 5 18 19 1 18 5 20 5 1 3 8 5 ... | 20 8 5 6 18 9 5 4 13 1 14 20 5 19 20 21 19 5 19 20 8 5 9 14 4 5 24 15 6 3 15 9 14 3 9 4 5 14 3 5 20 15 5 19 20 9 13 1 20 5 11 5 25 12 5 14 7 20 8 15 16 5 14 19 15 21 18 3 5 20 15 15 12 19 1 12 12 15 23 9 14 4 5 16 5 14 4 5 14 20 22 5 18 9 6 9 3 1 20 9 15 14 8 9 19 20 15 18 9 3 1 12 3 9 16 8 5 18 19 1 18 5 20 5 1 3 8 5 ... | THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 182 | 182 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
slidex-v3-0191 | SSGCGDLDIKGSEWLPARHRLRJKOUMXNCFWPHBKIOOUPGXITOAOILUWNXFCGERTHTBCLEGCFJHEUCRTSFYP | SSGCGDLDIKGSEWLPARHRLRJKOUMXNCFWPHBKIOOUPGXITOAOILUWNXFCGERTHTBCLEGCFJHEUCRTSFYP | THE ENIGMA MACHINE HAD AN ASTRONOMICAL NUMBER OF POSSIBLE SETTINGS MAKING IT SEEM UNBREAKABLE | slidex | slidex | transposition | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
enigma-v2-0954 | ZNNTULYCDLOHCIGJKIZVNNYKYSUSVMGPJNMPOKIEECSDMWCFITDOTGWAXPAUPQKMVKAYU | ZNNTULYCDLOHCIGJKIZVNNYKYSUSVMGPJNMPOKIEECSDMWCFITDOTGWAXPAUPQKMVKAYU | IT IS BETTER TO REMAIN SILENT AND BE THOUGHT A FOOL THAN TO SPEAK AND REMOVE ALL DOUBT | enigma | enigma | machine | {
"type": "rotor_start",
"value": "VWX"
} | expert | en | 69 | 69 | cipher_museum | 2.0 | public | null | null |
typex-201 | DGXCSDLVDOICVSAJQE | DGXCSDLVDOICVSAJQE | THE BRIDGE IS SECURED | typex | typex | machine | {
"type": "keyword",
"value": "SECRET"
} | expert | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
sigaba-v3-0351 | BBIMMAQGTGOIHUNKPCZPE | BBIMMAQGTGOIHUNKPCZPE | THE EXPERIMENT CONFIRMS | sigaba | sigaba | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
m209-229 | MPCZQOTPLJQDZIWELXJNWZOMZLLUOQHYALYZNIWMQQDTZNWQLWZRVQA | MPCZQOTPLJQDZIWELXJNWZOMZLLUOQHYALYZNIWMQQDTZNWQLWZRVQA | TO BE OR NOT TO BE THAT IS THE QUESTION WHETHER TIS NOBLER IN THE MIND | m209 | m209 | machine | {
"type": "seed",
"value": "MUSEUM"
} | expert | en | 55 | 55 | cipher_museum | 0.2 | public | null | null |
slidex-v3-0178 | RNXBXQDMOCUKUHOBWCEVNDARGOSSSBRNXBXQOBQREWTOJKOCOENDYTZTYPLGHMFLCKOQVCZK | RNXBXQDMOCUKUHOBWCEVNDARGOSSSBRNXBXQOBQREWTOJKOCOENDYTZTYPLGHMFLCKOQVCZK | DO UNTO OTHERS AS YOU WOULD HAVE THEM DO UNTO YOU THIS IS THE GOLDEN RULE OF ALL RELIGIONS | slidex | slidex | transposition | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
cda-0020981 | KZRK EFGE GGUU FUSK AYMG SPGA YBJR SNEU GUHX DDNN QIMM CZEW TODZ JDBU TILT YGJB XKHE IWDA GHJH LBTF WHZ | KZRK EFGE GGUU FUSK AYMG SPGA YBJR SNEU GUHX DDNN QIMM CZEW TODZ JDBU TILT YGJB XKHE IWDA GHJH LBTF WHZ | ATBASH ENCODES BY REVERSING THE ALPHABET AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER | vernam | vernam | null | {} | hard | en | 83 | 83 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
running-key-v3-0031 | XCHJGHZMBRULCVWFCQBCW | XCHJGHZMBRULCVWFCQBCW | SONS OF LIBERTY ASSEMBLE | running_key | running_key | polyalphabetic | {
"type": "text",
"value": "Gettysburg Address opening"
} | intermediate | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
solitaire-v2-0374 | OVMXXFHIOJRSCXTVXEUOEQRLPYLEYWQWGKMEMQDITAYMAGQRLTBFYFISYJCIXMVBPCMQPAQFXPCSRCPMBYFPQRWJJQTJJHEWDUBBMZOQNMOCCSHUAPXNZRFXNARIBRPDKRNGEXZWIKOGYVVRPMVDYYP | OVMXXFHIOJRSCXTVXEUOEQRLPYLEYWQWGKMEMQDITAYMAGQRLTBFYFISYJCIXMVBPCMQPAQFXPCSRCPMBYFPQRWJJQTJJHEWDUBBMZOQNMOCCSHUAPXNZRFXNARIBRPDKRNGEXZWIKOGYVVRPMVDYYP | 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 | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "PONTIFEX"
} | expert | en | 151 | 151 | cipher_museum | 2.0 | public | null | null |
diana-v2-0729 | JJOTACCQUOBPYLHUOBILNPTKRUPAQDSGQWNFCAFHYTYAGRAHWYQKGGUPBBDPRJQQUGCUQEWUG | JJOTACCQUOBPYLHUOBILNPTKRUPAQDSGQWNFCAFHYTYAGRAHWYQKGGUPBBDPRJQQUGCUQEWUG | ALEA IACTA EST ET CAESAR RUBICONE TRANSGRESSO BELLUM CIVILE INCIPIT PER TOTAM ROMANAM | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
cda-0021303 | other board swift exact right verse among batch light enemy enemy verse intel depth early north clear enter cross opens mixed exact south batch exact | other board swift exact right verse among batch light enemy enemy verse intel depth early north clear enter cross opens mixed exact south batch exact | OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT | null_cipher | null_cipher | null | {} | hard | en | 125 | 125 | synthetic_educational | null | null | [
"acrostic_detection",
"first_letter_extraction"
] | Null/steganographic cipher: hidden message formed by first letters of words. |
cda-0016389 | 11.39.8 10.2.1 1.30.11 13.9.9 18.37.6 4.19.12 16.16.9 5.46.2 19.36.11 2.43.15 3.43.11 19.46.6 12.42.4 3.49.2 2.36.14 3.11.4 6.19.11 16.16.2 13.29.14 8.33.8 8.24.8 10.46.1 3.39.12 1.30.2 15.25.7 14.23.10 5.17.13 10.50.13 16.31.2 1.30.12 13.31.2 8.3.7 19.10.15 15.28.7 7.33.14 3.19.7 19.29.10 18.23.4 13.42.13 20.41.15 1.1... | 11.39.8 10.2.1 1.30.11 13.9.9 18.37.6 4.19.12 16.16.9 5.46.2 19.36.11 2.43.15 3.43.11 19.46.6 12.42.4 3.49.2 2.36.14 3.11.4 6.19.11 16.16.2 13.29.14 8.33.8 8.24.8 10.46.1 3.39.12 1.30.2 15.25.7 14.23.10 5.17.13 10.50.13 16.31.2 1.30.12 13.31.2 8.3.7 19.10.15 15.28.7 7.33.14 3.19.7 19.29.10 18.23.4 13.42.13 20.41.15 1.1... | THE INDEX OF COINCIDENCE IS A USEFUL CLUE THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION | book_cipher | book_cipher | null | {} | hard | en | 172 | 172 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
cda-0010094 | CRNLDTTERIECUARRISTEEHOETCERYWEHDOERPYENEEFDFAMRRILUIAAPTRNNCSREOARREULSACTDVLEAKDDOGSCITXIIUTHSEDERTPECEMPINAPRAARGOLIWIRURVSIEUBIBATANGETPHIFOAISNINLCSGNCTIRLDPNLOUEY | CRNLDTTERIECUARRISTEEHOETCERYWEHDOERPYENEEFDFAMRRILUIAAPTRNNCSREOARREULSACTDVLEAKDDOGSCITXIIUTHSEDERTPECEMPINAPRAARGOLIWIRURVSIEUBIBATANGETPHIFOAISNINLCSGNCTIRLDPNLOUEY | CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN | stager_route | stager_route | null | {
"cols": 12
} | hard | en | 168 | 168 | synthetic_educational | null | null | [] | |
purple-042 | VOYHRKENLTBJGMVERFAFNUQGQNRAQTUNBWGVBPOUQCQFXHYHNUBXDQVQENCFDOTH | VOYHRKENLTBJGMVERFAFNUQGQNRAQTUNBWGVBPOUQCQFXHYHNUBXDQVQENCFDOTH | CRYPTOGRAPHY IS THE PRACTICE OF SECURING COMMUNICATIONS FROM ADVERSARIES | purple | purple | machine | {
"type": "seed",
"value": "PURPLE"
} | expert | en | 64 | 64 | cipher_museum | 0.2 | public | null | null |
cardano-autokey-v2-0227 | IHYNLUJSLNQXVFVRLWPWAVQHVNAPEPARARWKLXXLRTMUJBNSTHQWKLNSDFSUHVCTKJGTMSMYQRUSE | IHYNLUJSLNQXVFVRLWPWAVQHVNAPEPARARWKLXXLRTMUJBNSTHQWKLNSDFSUHVCTKJGTMSMYQRUSE | DEUTSCHLAND UBER ALLES IN DER WELT WENN ES STETS ZU SCHUTZ UND TRUTZE BRÜDERLICH ZUSAMMENHÄLT | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "FLORENCE"
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
typex-111 | CBCBYSFBLBJIKRCJFBGKRTJIUZSHNBHCLMMLATAMCGGSCGIQTIACPEAHBLEO | CBCBYSFBLBJIKRCJFBGKRTJIUZSHNBHCLMMLATAMCGGSCGIQTIACPEAHBLEO | KNOWLEDGE IS POWER AND INFORMATION IS THE KEY TO VICTORY IN ANY CONFLICT | typex | typex | machine | {
"type": "keyword",
"value": "BLETCHLEY"
} | expert | en | 60 | 60 | cipher_museum | 0.2 | public | null | null |
cda-0015095 | okshy okeedy okeedy otaiin ctaiin shaiin chedal raiin shaiin shedy qotedy okedy rcheol | okshy okeedy okeedy otaiin ctaiin shaiin chedal raiin shaiin shedy qotedy okedy rcheol | SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY | voynich_render | voynich_render | null | {} | medium | en | 74 | 74 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
enigma-v2-0428 | SWGQFOISCPRAEMAHZMLHKGHESFODZHQKDYCBFRUSAEHFSJYXDKYFZDPZKLAFTFKEWJUMHRJXVK | SWGQFOISCPRAEMAHZMLHKGHESFODZHQKDYCBFRUSAEHFSJYXDKYFZDPZKLAFTFKEWJUMHRJXVK | GOOD NIGHT GOOD NIGHT PARTING IS SUCH SWEET SORROW THAT I SHALL SAY GOOD NIGHT TILL MORROW | enigma | enigma | machine | {
"type": "rotor_start",
"value": "JKL"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
scytale-v3-0118 | LWRHDABIGOETERWRDE | LWRHDABIGOETERWRDE | LOWER THE DRAWBRIDGE | scytale | scytale | transposition | {
"type": "integer",
"value": 9
} | intermediate | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
m209-v2-0127 | KWACUYUMBALJ | KWACUYUMBALJ | THE DIE IS CAST | m209 | m209 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-353 | TCNGEFDAAEEIOUHSNTDRUBTTVLHSKEJEEHAATRRVLTDOENASOOSEHHELEGFR | TCNGEFDAAEEIOUHSNTDRUBTTVLHSKEJEEHAATRRVLTDOENASOOSEHHELEGFR | LET JUSTICE BE DONE THOUGH THE HEAVENS FALL AND THE STARS GO DARK FOREVER | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "SECRET"
} | intermediate | en | 60 | 60 | cipher_museum | 0.2 | public | null | null |
four-square-v2-0490 | DDYGORSHSRHLTNIT | DDYGORSHSRHLTNIT | DIVIDE AND CONQUER | four_square | four_square | polygraphic | {
"key1": "WISDOM",
"key2": "COURAGE"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
affine-vh-0008 | SVT UFDKA DH LVSUDORSLR DS TAFK TR AVYR UVE FSO FHHNEFSLR FIVNK TAFK TR OV SVK ZRK HRR | SVT UFDKA DH LVSUDORSLR DS TAFK TR AVYR UVE FSO FHHNEFSLR FIVNK TAFK TR OV SVK ZRK HRR | NOW FAITH IS CONFIDENCE IN WHAT WE HOPE FOR AND ASSURANCE ABOUT WHAT WE DO NOT YET SEE | affine | affine | substitution | {
"a": 3,
"b": 5
} | beginner | en | 69 | 86 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-v2-0235 | PMIVIMUVKVWRGEYFUA | PMIVIMUVKVWRGEYFUA | LOOSE LIPS SINK SHIPS | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "1,3,5,2,4,6"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-243 | LVYXHKCRZOMEHRURV | LVYXHKCRZOMEHRURV | THE EAGLE HAS LANDED | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "SOUTHERN"
} | intermediate | en | 17 | 17 | cipher_museum | 0.2 | public | null | null |
hist-chaocipher-byrne-001 | OAHQHCNYNXTSZJRRHJBYHQKSOUJY | OAHQHCNYNXTSZJRRHJBYHQKSOUJY | THIS CIPHER IS SOLVED | chaocipher | chaocipher | substitution | {
"initial_left": "HXUCZVAMDSLKPEFJRIGTWOBNYQ",
"initial_right": "PTLNBQDEOYSFAVZKGJRIHWXUMC"
} | advanced | en | 28 | 28 | cipher_museum | 0.2 | public | null | null |
m94-v2-0222 | QUHUVJKUFYOVCVJMYLLRO | QUHUVJKUFYOVCVJMYLLRO | BRIDGE DESTROYED AT DAWN | m94 | m94 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
purple-v3-0093 | CSDGHICKHIBYUQSCDAXMKOTZOSYDWHZZMBDYDCTWEYCOKHPDAAMCBUNJBJABQIKESWPCKTSCCLEIODOEZUNUZXSRTEQKVHTGXQXTTMSQZQTBMCUZBQKKCZHFXQDVFGCKHIBBUJTMJGFYQDPAYQNAYMVXRUWJXIHTPWRTGTTHG | CSDGHICKHIBYUQSCDAXMKOTZOSYDWHZZMBDYDCTWEYCOKHPDAAMCBUNJBJABQIKESWPCKTSCCLEIODOEZUNUZXSRTEQKVHTGXQXTTMSQZQTBMCUZBQKKCZHFXQDVFGCKHIBBUJTMJGFYQDPAYQNAYMVXRUWJXIHTPWRTGTTHG | WE HOLD THESE TRUTHS TO BE SELF EVIDENT THAT ALL MEN ARE CREATED EQUAL THAT THEY ARE ENDOWED BY THEIR CREATOR WITH CERTAIN UNALIENABLE RIGHTS THAT AMONG THESE ARE LIFE LIBERTY AND THE PURSUIT OF HAPPINESS | purple | purple | machine | {
"type": "seed",
"value": "TOKYO"
} | expert | en | 169 | 169 | cipher_museum | 2.0 | public | null | null |
two-square-v2-0072 | UGCUPHUAUNFGETQNNGEDEABKTFETQNNGSTLQULHKOLSTPUATATIMCHETTXOUZBTWDTQKKGEEFW | UGCUPHUAUNFGETQNNGEDEABKTFETQNNGSTLQULHKOLSTPUATATIMCHETTXOUZBTWDTQKKGEEFW | THE SECRET OF GETTING AHEAD IS GETTING STARTED ONE STEP AT A TIME GETS YOU VERY FAR INDEED | two_square | two_square | polygraphic | {
"key1": "PALACE",
"key2": "BATTLE"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
null-cipher-v2-0079 | that into their help these did who sraa follow aeia by ioua will call much nsra in old has eiob after outa utnc the | that into their help these did who sraa follow aeia by ioua will call much nsra in old has eiob after outa utnc the | TORPEDO AWAY ALL HANDS BRACE | null_cipher | null_cipher | steganography | {
"type": "position",
"value": "last"
} | advanced | en | 92 | 115 | cipher_museum | 2.0 | public | null | null |
cda-0021918 | ZOZM GFIRMT YILPV VMRTNZ DRGS XIRYH ZMW GSV YLNYV NZXSRMV | ZOZM GFIRMT YILPV VMRTNZ DRGS XIRYH ZMW GSV YLNYV NZXSRMV | ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE | atbash | atbash | null | {} | medium | en | 48 | 48 | synthetic_educational | null | null | [
"self_inverse_check",
"frequency_analysis"
] | Atbash maps A↔Z, B↔Y, … and is its own inverse. |
fractionated-morse-v3-0290 | FAKGHQYPYBLPBTEYDVQUMUVMDQQMGYBRYUGMAAGTGYBMNLQBBLPBKAAVMEQYQBBHPVNAKEQGEVMLPUBBMAAGMLSIYGYSDMQAEPPY | FAKGHQYPYBLPBTEYDVQUMUVMDQQMGYBRYUGMAAGTGYBMNLQBBLPBKAAVMEQYQBBHPVNAKEQGEVMLPUBBMAAGMLSIYGYSDMQAEPPY | CONGRESS SHALL MAKE NO LAW RESPECTING AN ESTABLISHMENT OF RELIGION OR PROHIBITING THE FREE EXERCISE | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 100 | 100 | cipher_museum | 2.0 | public | null | null |
book-cipher-v3-0026 | 15.1 5.1 3.1 15.1 24.1 35.1 6.1 15.1 5.1 3.1 | 15.1 5.1 3.1 15.1 24.1 35.1 6.1 15.1 5.1 3.1 | DOT DASH DOT | book_cipher | book_cipher | codebook | {
"type": "none",
"value": null
} | expert | en | 35 | 44 | cipher_museum | 2.0 | public | null | null |
cda-0015142 | 23 24 43 44 34 42 24 13 11 31 13 24 35 23 15 42 43 11 42 15 44 15 11 13 23 15 42 43 33 34 44 35 42 34 44 15 13 44 24 34 33 | 23 24 43 44 34 42 24 13 11 31 13 24 35 23 15 42 43 11 42 15 44 15 11 13 23 15 42 43 33 34 44 35 42 34 44 15 13 44 24 34 33 | HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION | 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. |
cda-0013610 | 20 82 68 59 76 69 80 66 50 61 66 36 82 80 82 52 50 65 80 69 52 68 57 69 76 95 50 25 82 29 82 80 82 68 29 11 11 82 52 80 43 65 66 61 50 66 61 82 57 76 | 20 82 68 59 76 69 80 66 50 61 66 36 82 80 82 52 50 65 80 69 52 68 57 69 76 95 50 25 82 29 82 80 82 68 29 11 11 82 52 80 43 65 66 61 50 66 61 82 57 76 | BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF | wallis_cipher | wallis_cipher | null | {} | medium | en | 50 | 50 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
m209-249 | KJOPQFSUQYCNSMLNRVMAA | KJOPQFSUQYCNSMLNRVMAA | SUPPLY LINE COMPROMISED | m209 | m209 | machine | {
"type": "seed",
"value": "ENIGMA"
} | expert | en | 21 | 21 | cipher_museum | 0.2 | public | null | null |
chaocipher-v2-0479 | WPHLGLEPUPHIBCQPAEFUZIGEHUCUOKRHESAHYHWEUTCHBNICZRWWQMSDCAVAFDOPWEHQTTLRNSOIX | WPHLGLEPUPHIBCQPAEFUZIGEHUCUOKRHESAHYHWEUTCHBNICZRWWQMSDCAVAFDOPWEHQTTLRNSOIX | DEUTSCHLAND UBER ALLES IN DER WELT WENN ES STETS ZU SCHUTZ UND TRUTZE BRÜDERLICH ZUSAMMENHÄLT | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
four-square-v3-0420 | OTTOMA | OTTOMA | EUREKA | four_square | four_square | polygraphic | {
"key1": "WISDOM",
"key2": "COURAGE"
} | advanced | en | 6 | 6 | cipher_museum | 2.0 | public | null | null |
chaocipher-v2-0153 | ZEIIJRFWGCKZX | ZEIIJRFWGCKZX | HONOR ABOVE ALL | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
adfgx-v2-0096 | AXDXXXGXXXXGGDXGGGXXGAFGXXDXXFGAADFAGFADGAAGGGDDGXGGGFGAGDAFGGFXFADGXAXDDXGFXFFXGXFGFAXAGGFFGFAFDAAADADGAADADAFGAFAADAGGGXGAGDFGADFAAAFDGXFFXGXDDDXDFAGXFDGDXXAXFXXXFAGG | AXDXXXGXXXXGGDXGGGXXGAFGXXDXXFGAADFAGFADGAAGGGDDGXGGGFGAGDAFGGFXFADGXAXDDXGFXFFXGXFGFAXAGGFFGFAFDAAADADGAADADAFGAFAADAGGGXGAGDFGADFAAAFDGXFFXGXDDDXDFAGXFDGDXXAXFXXXFAGG | VENONA REVEALED THAT NUMEROUS SOVIET AGENTS HAD PENETRATED THE HIGHEST LEVELS OF THE US GOVERNMENT | adfgx | adfgx | fractionation | {
"polybius": "PALACE",
"columnar": "BATTLE"
} | advanced | en | 168 | 168 | cipher_museum | 2.0 | public | null | null |
cda-0017382 | --. --- --- -.. / . -.. ..- -.-. .- - .. --- -. .- .-.. / - --- --- .-.. ... / . -..- .--. .-.. .- .. -. / - .... . .. .-. / .-.. .. -- .. - ... / - .... . / . -. .. --. -- .- / -- .- -.-. .... .. -. . / ..- ... . -.. / .-. --- - --- .-. ... / - --- / -.-. .-. . .- - . / .- / .--. --- .-.. -.-- .- .-.. .--. .... .- -..... | --. --- --- -.. / . -.. ..- -.-. .- - .. --- -. .- .-.. / - --- --- .-.. ... / . -..- .--. .-.. .- .. -. / - .... . .. .-. / .-.. .. -- .. - ... / - .... . / . -. .. --. -- .- / -- .- -.-. .... .. -. . / ..- ... . -.. / .-. --- - --- .-. ... / - --- / -.-. .-. . .- - . / .- / .--. --- .-.. -.-- .- .-.. .--. .... .- -..... | GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER A STRONG CLAIM NEEDS STRONG EVIDENCE | morse_code | morse_code | null | {} | hard | en | 124 | 124 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
red-type-a-207 | GQOKKANENCUZ | GQOKKANENCUZ | THE TRAP IS SET | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 12 | 12 | cipher_museum | 0.2 | public | null | null |
geheimschreiber-v3-0281 | DETVAMSCTNXRIJLCGPLLEZBFPTNVFHXTEDTOPHWJCDAXRRJGTRRYGDXCZNOCQPWRCKXOPGCTBZFDGV | DETVAMSCTNXRIJLCGPLLEZBFPTNVFHXTEDTOPHWJCDAXRRJGTRRYGDXCZNOCQPWRCKXOPGCTBZFDGV | BLESSED ARE THE MEEK FOR THEY SHALL INHERIT THE EARTH AND THE PEACEMAKERS SHALL BE CALLED SONS | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "GOTHIC"
} | expert | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
geez-monastic-v2-0090 | OPMRWNJJBHXUQHLUKPUCJAJPIJIPXLJMAJMQYTAJMVJLLJMUKJMJIJQHIJICRLAHOPUTAJVYTTJU | OPMRWNJJBHXUQHLUKPUCJAJPIJIPXLJMAJMQYTAJMVJLLJMUKJMJIJQHIJICRLAHOPUTAJVYTTJU | MARY QUEEN OF SCOTS WAS BEHEADED AFTER HER CIPHER LETTERS WERE DECODED BY THOMAS PHELIPPES | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "ETHIOPIA"
} | advanced | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
hill-v2-0094 | YADQAVZIZGYSOQQMBUCBIIRPYOZVUMTPXZAOCKOQUMGXLDSMZSRCOXRRXZDQFYPFEZMIBYHXTGKRTFQUBURS | YADQAVZIZGYSOQQMBUCBIIRPYOZVUMTPXZAOCKOQUMGXLDSMZSRCOXRRXZDQFYPFEZMIBYHXTGKRTFQUBURS | CODED TRANSMISSION INDICATES ENEMY FORCES ASSEMBLING ALONG THE BORDER WITH HEAVY ARTILLERY UNITS | hill | hill | polygraphic | {
"a": 3,
"b": 5,
"c": 2,
"d": 9
} | advanced | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
great-cipher-v2-0267 | 158 169 132 175 180 118 170 147 176 118 144 170 | 158 169 132 175 180 118 170 147 176 118 144 170 | ABORT AND WITHDRAW | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "FRANCE"
} | expert | en | 36 | 47 | cipher_museum | 2.0 | public | null | null |
bazeries-v3-0237 | LYVOGIRYTMOTGIYLEFND | LYVOGIRYTMOTGIYLEFND | THE REDCOATS ARE COMING | bazeries | bazeries | transposition | {
"type": "integer",
"value": 37
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
affine-v3-0549 | JDI VIBUAGJC GVI UAMKTW | JDI VIBUAGJC GVI UAMKTW | THE REDCOATS ARE COMING | affine | affine | substitution | {
"a": 7,
"b": 6
} | beginner | en | 20 | 23 | cipher_museum | 2.0 | public | null | null |
cda-0008461 | FENIRLCRFCRIIFIEESIAHBTDRYEEIBTRESUDWSTUEEEOITETAOUNEAIFSIWESANRECLCVEPAIPPSENNCTCYMUTDRTHSADTEXXCNESAEISUELSCUEHTCAAPHNNHAEAYYQUASNAKEAEELLRTOLRRLSDSNCNMGHNOUX | FENIRLCRFCRIIFIEESIAHBTDRYEEIBTRESUDWSTUEEEOITETAOUNEAIFSIWESANRECLCVEPAIPPSENNCTCYMUTDRTHSADTEXXCNESAEISUELSCUEHTCAAPHNNHAEAYYQUASNAKEAEELLRTOLRRLSDSNCNMGHNOUX | FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY THE MESSAGE WAS HIDDEN BUT NOT SECURE | stager_route | stager_route | null | {
"cols": 5
} | hard | en | 160 | 160 | synthetic_educational | null | null | [] | |
gronsfeld-v2-0679 | CPLWZJTPZDXNTKWLGPYSXBZZWJQUKIRBKXTYXLZMJAANJPMUZQNZHOSOZVSMNICKSJJVBJ | CPLWZJTPZDXNTKWLGPYSXBZZWJQUKIRBKXTYXLZMJAANJPMUZQNZHOSOZVSMNICKSJJVBJ | THE QUALITY OF MERCY IS NOT STRAINED IT DROPPETH AS THE GENTLE RAIN FROM HEAVEN ABOVE | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "98765"
} | intermediate | en | 70 | 70 | cipher_museum | 2.0 | public | null | null |
cda-0008763 | ETIRNERRESINSOAIIENKNAELCNEOETIBSSHTEFEFEEDTOPYGHNNHHUTWRATNHOEOIAYEALEEIEHNLCSWLELEEEHSPEEEOSTFOTFOTRFTRBCXNTLCRHNXUTHMCSARAWISDMCRUDTNMSEIAERNDETBBONEUATQSPOYSP | ETIRNERRESINSOAIIENKNAELCNEOETIBSSHTEFEFEEDTOPYGHNNHHUTWRATNHOEOIAYEALEEIEHNLCSWLELEEEHSPEEEOSTFOTFOTRFTRBCXNTLCRHNXUTHMCSARAWISDMCRUDTNMSEIAERNDETBBONEUATQSPOYSP | MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY THE MESSAGE WAS HIDDEN BUT NOT SECURE THE BEST LESSONS SHOW WHERE THE METHOD FAILS AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER | double_transposition | double_transposition | null | {
"key1": "JUSTICE",
"key2": "SIGNAL"
} | hard | en | 162 | 162 | synthetic_educational | null | null | [] | |
bifid-v3-0141 | RFAFEFSCDOQBPAG | RFAFEFSCDOQBPAG | THE FACTORY ROARS | bifid | bifid | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 15 | 15 | cipher_museum | 2.0 | public | null | null |
kryha-v3-0146 | FAPZXMQHLB | FAPZXMQHLB | DOT DASH DOT | kryha | kryha | machine | {
"type": "keyword",
"value": "VIENNA"
} | expert | en | 10 | 10 | cipher_museum | 2.0 | public | null | null |
cda-0014955 | qokal dainy lkaiin shor okedy ykcheol sheedy qokeedy shal oxed okshy qokeedy qotedy qokeedy aiiin qokedy shaiin oror sharal ctaiin okal kaiiin qotedy sheedy choldaiin ypchol sharal ctaiin lkaiin qotedy sheedy chedal otain raiin chor ypchol daral shaiin oror qokedy qokedy | qokal dainy lkaiin shor okedy ykcheol sheedy qokeedy shal oxed okshy qokeedy qotedy qokeedy aiiin qokedy shaiin oror sharal ctaiin okal kaiiin qotedy sheedy choldaiin ypchol sharal ctaiin lkaiin qotedy sheedy chedal otain raiin chor ypchol daral shaiin oror qokedy qokedy | CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | voynich_render | voynich_render | null | {} | hard | en | 231 | 231 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
cda-0006170 | PEEPUOIONTAMMVLCTIBOEYOERENXBDRSREXIESOSTXUDAFFOXSLSNRFX | PEEPUOIONTAMMVLCTIBOEYOERENXBDRSREXIESOSTXUDAFFOXSLSNRFX | POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE | scytale | scytale | null | {
"cols": 8
} | medium | en | 56 | 56 | synthetic_educational | null | null | [
"column_count_search",
"anagram_recovery"
] | Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter. |
cda-0013010 | MAEW OLLA CHEE TKIN DIBE HYAZ ZIEM OASI DIBE HYAZ ZIEA KHAD IBEH DZEH BETK INDI BEHW OLLA CHEE CLAG IAIH AKHA DIBE HTHA NZIE NODA IHGA HDZE HTSA HAKH ATHA NZIE WOLL ACHE EDIB EHDI BEHY AZZI EAKH AAHJ AHWO LLAC HEET SAHL INNO DAIH NAAS TSOS IWOL LACH EETS AHGA HDZE HWOL LACH EEBE WOLL ACHE E | MAEW OLLA CHEE TKIN DIBE HYAZ ZIEM OASI DIBE HYAZ ZIEA KHAD IBEH DZEH BETK INDI BEHW OLLA CHEE CLAG IAIH AKHA DIBE HTHA NZIE NODA IHGA HDZE HTSA HAKH ATHA NZIE WOLL ACHE EDIB EHDI BEHY AZZI EAKH AAHJ AHWO LLAC HEET SAHL INNO DAIH NAAS TSOS IWOL LACH EETS AHGA HDZE HWOL LACH EEBE WOLL ACHE E | FAIL CLOSED IS A POSTURE NOT A SLOGAN HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY | navajo_code | navajo_code | null | {} | hard | en | 233 | 233 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
caesar-v2-1610 | FU FCVYLNY AOCXUHN FY JYOJFY PYLM OH UPYHCL GYCFFYOL YN JFOM DOMNY JIOL NIOM FYM BIGGYM FCVLYM | FU FCVYLNY AOCXUHN FY JYOJFY PYLM OH UPYHCL GYCFFYOL YN JFOM DOMNY JIOL NIOM FYM BIGGYM FCVLYM | LA LIBERTE GUIDANT LE PEUPLE VERS UN AVENIR MEILLEUR ET PLUS JUSTE POUR TOUS LES HOMMES LIBRES | caesar | caesar | substitution | {
"type": "shift",
"value": 20
} | beginner | en | 78 | 94 | cipher_museum | 2.0 | public | null | null |
beaufort-v2-0147 | JEMJHEIINIM | JEMJHEIINIM | KNOW THYSELF | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "TRAFALGAR"
} | intermediate | en | 11 | 11 | cipher_museum | 2.0 | public | null | null |
kryptos-v2-0158 | YDDBMKDFGHSFP | YDDBMKDFGHSFP | E PLURIBUS UNUM | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "LANGLEY"
} | advanced | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
cda-0013543 | cause range years phase turns often going raids among parts holds yield right early watch again raids daily stage point above track input extra night | cause range years phase turns often going raids among parts holds yield right early watch again raids daily stage point above track input extra night | CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING | null_cipher | null_cipher | null | {} | hard | en | 125 | 125 | synthetic_educational | null | null | [
"acrostic_detection",
"first_letter_extraction"
] | Null/steganographic cipher: hidden message formed by first letters of words. |
polybius-la-001 | 22 11 31 31 24 11 15 43 44 34 32 33 24 43 14 24 51 24 43 11 24 33 35 11 42 44 15 43 44 42 15 43 | 22 11 31 31 24 11 15 43 44 34 32 33 24 43 14 24 51 24 43 11 24 33 35 11 42 44 15 43 44 42 15 43 | GALLIA EST OMNIS DIVISA IN PARTES TRES | polybius | polybius | substitution | {
"type": "none",
"value": null
} | beginner | la | 64 | 95 | cipher_museum | 0.2 | public | null | null |
hill-015 | JZLPFROIQFEMLDTV | JZLPFROIQFEMLDTV | OPERATION BEGINS | hill | hill | polygraphic | {
"a": 3,
"b": 3,
"c": 2,
"d": 5
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
cda-0014063 | 1661 4483 6305 5692 4768 05057 7880 04164 01660 00357 5990 6643 05700 1583 05973 06643 4414 00983 01603 05653 6367 0323 02857 04461 06352 07933 2851 4458 0400 1289 2851 6002 06328 05748 02884 00693 06623 6368 2832 04762 4451 1635 5731 5660 4731 05742 0995 4801 5727 05657 01638 00988 06321 02851 4712 4484 00363 04465 13... | 1661 4483 6305 5692 4768 05057 7880 04164 01660 00357 5990 6643 05700 1583 05973 06643 4414 00983 01603 05653 6367 0323 02857 04461 06352 07933 2851 4458 0400 1289 2851 6002 06328 05748 02884 00693 06623 6368 2832 04762 4451 1635 5731 5660 4731 05742 0995 4801 5727 05657 01638 00988 06321 02851 4712 4484 00363 04465 13... | ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS | zimmermann | zimmermann | null | {} | hard | en | 97 | 97 | synthetic_educational | null | null | [
"codebook_frequency",
"number_group_analysis"
] | Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher. |
adfgx-193 | GAAADFFFFDFDFGAFAAGGFDGFAAAAFA | GAAADFFFFDFDFGAFAAGGFDGFAAAAFA | SILENCE IS GOLDEN | adfgx | adfgx | fractionation | {
"polybius": "ENIGMA",
"columnar": "CRYPTO"
} | advanced | en | 30 | 30 | cipher_museum | 0.2 | public | null | null |
polybius-v2-0026 | 25 15 15 35 54 34 45 42 35 34 52 14 15 42 14 42 54 | 25 15 15 35 54 34 45 42 35 34 52 14 15 42 14 42 54 | KEEP YOUR POWDER DRY | polybius | polybius | substitution | {
"type": "none",
"value": null
} | beginner | en | 34 | 50 | cipher_museum | 2.0 | public | null | null |
four-square-108 | SFEANSMWBNKYTQFSTXTQINEETDBIYLQTHDLGITPMHKTUBLRIWYDRADUUHOCSUU | SFEANSMWBNKYTQFSTXTQINEETDBIYLQTHDLGITPMHKTUBLRIWYDRADUUHOCSUU | THE ENEMY KNOWS THE SYSTEM DESIGN YOUR CIPHER ACCORDINGLY WITH GREAT CARE | four_square | four_square | polygraphic | {
"key1": "CIPHER",
"key2": "MUSEUM"
} | advanced | en | 62 | 62 | cipher_museum | 0.2 | public | null | null |
four-square-v2-0458 | DFIVRMNTUHCQDHUUGKLUADOLTBKKFUKURZFUHUDGGSHNTQATBZRLSSSQODMOHUDGRZFUMPTAIAMQPRIQOUQXRLSSSQODLRHUGPNYRZFUIXDDUHMURMZHMOTPHHFDSBODMULWOHLEDZRZDDUHNTPHVHXY | DFIVRMNTUHCQDHUUGKLUADOLTBKKFUKURZFUHUDGGSHNTQATBZRLSSSQODMOHUDGRZFUMPTAIAMQPRIQOUQXRLSSSQODLRHUGPNYRZFUIXDDUHMURMZHMOTPHHFDSBODMULWOHLEDZRZDDUHNTPHVHXY | ALL WARFARE IS BASED ON DECEPTION HENCE WHEN ABLE TO ATTACK WE MUST SEEM UNABLE WHEN USING OUR FORCES WE MUST SEEM INACTIVE WHEN WE ARE NEAR WE MUST MAKE THE ENEMY BELIEVE WE ARE FAR AWAY | four_square | four_square | polygraphic | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 152 | 152 | cipher_museum | 2.0 | public | null | null |
beaufort-vg-0031 | WQJYBOAPVQXMNHRGYWEGOEPCXEHQCGERUNSCMFNBHMHGCALFNBEGOEZEKALUOKOLOEXZFBPP | WQJYBOAPVQXMNHRGYWEGOEPCXEHQCGERUNSCMFNBHMHGCALFNBEGOEZEKALUOKOLOEXZFBPP | FOR WE ARE GOD IS HANDIWORK CREATED IN CHRIST JESUS TO DO GOOD WORKS PREPARED IN ADVANCE | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "BEAUFORT"
} | intermediate | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
geheimschreiber-v2-0246 | UJPONVAGUMZZVRJCWJRCCZYPDXIHPAHHCZXPWJXYAFTAKCHOTCQUPLXNAGFHTJWXYIZBDOMROYVZNAEQGKDVNWYCSTHVYXSGOSRVTCOQDBJEXQTZUIZRNMUJOGWWKONLTNIBZVMGRAKMETPSBZBGHFETJQDKIDDPENTVXPPUFKVAMUAMSRDSI | UJPONVAGUMZZVRJCWJRCCZYPDXIHPAHHCZXPWJXYAFTAKCHOTCQUPLXNAGFHTJWXYIZBDOMROYVZNAEQGKDVNWYCSTHVYXSGOSRVTCOQDBJEXQTZUIZRNMUJOGWWKONLTNIBZVMGRAKMETPSBZBGHFETJQDKIDDPENTVXPPUFKVAMUAMSRDSI | 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 | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "KAISER"
} | expert | en | 181 | 181 | cipher_museum | 2.0 | public | null | null |
geheimschreiber-v2-0325 | VZTVOPAGOREIIIHWPGMDDXWOPHBDUHXQTGRSPPIIYHRIYDPGDLWOMGXMUUBHZJSZUMLWSQKDW | VZTVOPAGOREIIIHWPGMDDXWOPHBDUHXQTGRSPPIIYHRIYDPGDLWOMGXMUUBHZJSZUMLWSQKDW | THE SECRET OF GETTING AHEAD IS GETTING STARTED ONE STEP AT A TIME GETS YOU VERY FAR INDEED | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "GOTHIC"
} | expert | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
affine-v3-1441 | AVH NUXARKQTPU ANETNV PU QYN ZHQYNZHQTXHE STIITXLEQR PI IHXQPATUD QYN KAPSLXQ PI QBP EHADN KATZNV | AVH NUXARKQTPU ANETNV PU QYN ZHQYNZHQTXHE STIITXLEQR PI IHXQPATUD QYN KAPSLXQ PI QBP EHADN KATZNV | RSA ENCRYPTION RELIES ON THE MATHEMATICAL DIFFICULTY OF FACTORING THE PRODUCT OF TWO LARGE PRIMES | affine | affine | substitution | {
"a": 21,
"b": 7
} | beginner | en | 83 | 97 | cipher_museum | 2.0 | public | null | null |
diana-v3-0204 | KDSCVGHHFEPPLUEAQKEXSLPLGEIEEVTZIYSECTEIYJEYBUVUSEWXCPOLVHSBKEEKNXGEYLFPLJBWTSDAJAOHWHTRPTLZHLKBMRHMDYGMZOPKPAFHBXERXAPZIWKGASOJQLAYLHHSNEJLZHJYFWGKCAKWMUSEBIPC | KDSCVGHHFEPPLUEAQKEXSLPLGEIEEVTZIYSECTEIYJEYBUVUSEWXCPOLVHSBKEEKNXGEYLFPLJBWTSDAJAOHWHTRPTLZHLKBMRHMDYGMZOPKPAFHBXERXAPZIWKGASOJQLAYLHHSNEJLZHJYFWGKCAKWMUSEBIPC | 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 | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "SPECIAL"
} | intermediate | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
great-cipher-v3-0171 | 161 158 114 179 142 161 177 164 167 153 149 163 133 173 109 160 117 136 135 169 117 103 177 124 119 112 128 143 152 119 147 101 143 119 163 154 171 155 162 179 111 124 154 170 126 158 180 117 143 146 129 100 118 143 135 117 175 | 161 158 114 179 142 161 177 164 167 153 149 163 133 173 109 160 117 136 135 169 117 103 177 124 119 112 128 143 152 119 147 101 143 119 163 154 171 155 162 179 111 124 154 170 126 158 180 117 143 146 129 100 118 143 135 117 175 | WATSON WE HAVE FOUND THE STRUCTURE OF DNA AND IT IS A DOUBLE HELIX OF BREATHTAKING BEAUTY | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "ROSSIGNOL"
} | expert | en | 171 | 227 | cipher_museum | 2.0 | public | null | null |
hill-v2-0052 | MWHKZILYZIEPVOTZYMZVZKEQHTPLJBPYZJMIMJZXTFKWFWGONOMTREYSRSUGPLAOXIOXYOMI | MWHKZILYZIEPVOTZYMZVZKEQHTPLJBPYZJMIMJZXTFKWFWGONOMTREYSRSUGPLAOXIOXYOMI | GENERAL GRANT HAS TAKEN VICKSBURG THE GREAT RIVER IS NOW OPEN FROM ITS SOURCE TO THE SEA | hill | hill | polygraphic | {
"a": 3,
"b": 5,
"c": 2,
"d": 9
} | advanced | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-v2-0105 | 42516124829134748282825528228407050848537234828618323569129134020668731236529425112004163952929203227050425161 | 42516124829134748282825528228407050848537234828618323569129134020668731236529425112004163952929203227050425161 | THE REGIMENT WILL HOLD ITS POSITION UNTIL REINFORCEMENTS ARRIVE FROM THE EASTERN COMMAND POST HERE | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "SENTORISCA"
} | advanced | en | 110 | 110 | cipher_museum | 2.0 | public | null | null |
cda-0019056 | ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a17⟩ ⟨w20⟩ ⟨a25⟩ ⟨w20⟩ ⟨w14⟩ ⟨a25⟩ ⟨w32⟩ ⟨a31⟩ ⟨w20⟩ ⟨w22⟩ ⟨a25⟩ ⟨w28⟩ ⟨a17⟩ ⟨w32⟩ ⟨w20⟩ ⟨w22⟩ ⟨a13⟩ ⟨w08⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a19⟩ ⟨a07⟩ ⟨w22⟩ ⟨a11⟩ ⟨w20⟩ ⟨a23⟩ ⟨w10⟩ ⟨a19⟩ ⟨w20⟩ ⟨w04⟩ ⟨w08⟩ ⟨w38⟩ ⟨w32⟩ ⟨a07⟩ ⟨w26⟩ ⟨w14⟩ ⟨a01⟩ ⟨w08⟩ ⟨w32⟩ ⟨w04⟩ ⟨w22⟩ ⟨w14⟩ ⟨a19⟩ ⟨w40⟩ ⟨a13⟩ ⟨a25⟩ ⟨w10⟩ ⟨w26⟩ ⟨a19⟩ ⟨w... | ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a17⟩ ⟨w20⟩ ⟨a25⟩ ⟨w20⟩ ⟨w14⟩ ⟨a25⟩ ⟨w32⟩ ⟨a31⟩ ⟨w20⟩ ⟨w22⟩ ⟨a25⟩ ⟨w28⟩ ⟨a17⟩ ⟨w32⟩ ⟨w20⟩ ⟨w22⟩ ⟨a13⟩ ⟨w08⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a19⟩ ⟨a07⟩ ⟨w22⟩ ⟨a11⟩ ⟨w20⟩ ⟨a23⟩ ⟨w10⟩ ⟨a19⟩ ⟨w20⟩ ⟨w04⟩ ⟨w08⟩ ⟨w38⟩ ⟨w32⟩ ⟨a07⟩ ⟨w26⟩ ⟨w14⟩ ⟨a01⟩ ⟨w08⟩ ⟨w32⟩ ⟨w04⟩ ⟨w22⟩ ⟨w14⟩ ⟨a19⟩ ⟨w40⟩ ⟨a13⟩ ⟨a25⟩ ⟨w10⟩ ⟨w26⟩ ⟨a19⟩ ⟨w... | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING THE ARCHITECTURE SHOULD MAKE MISUSE HARDER CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS | babington | babington | null | {} | hard | en | 172 | 172 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
chaocipher-v2-0403 | NEHHHNBFUDMQYH | NEHHHNBFUDMQYH | TRUST BUT VERIFY | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0013694 | 00348 5993 00994 07857 6323 00373 3783 1641 02830 6015 00342 5679 4723 1320 06646 06017 1573 1289 00695 07887 5967 5041 00382 05704 6333 00385 04456 5980 06369 4766 01584 4418 0972 05693 07872 5043 6283 04082 1668 06013 05980 0342 2207 1579 05990 05663 04803 06605 6354 01635 00959 02922 05095 2535 01651 5678 05989 0566... | 00348 5993 00994 07857 6323 00373 3783 1641 02830 6015 00342 5679 4723 1320 06646 06017 1573 1289 00695 07887 5967 5041 00382 05704 6333 00385 04456 5980 06369 4766 01584 4418 0972 05693 07872 5043 6283 04082 1668 06013 05980 0342 2207 1579 05990 05663 04803 06605 6354 01635 00959 02922 05095 2535 01651 5678 05989 0566... | A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE | zimmermann | zimmermann | null | {} | hard | en | 182 | 182 | synthetic_educational | null | null | [
"codebook_frequency",
"number_group_analysis"
] | Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher. |
monoalphabetic-v3-0372 | UATORD KE QAD GBRAQ HOBRTND BJQK QAD VTGGDY KE NDTQA OKND QAD PBX ASJNODN HOTVD UTVTGBDOP | UATORD KE QAD GBRAQ HOBRTND BJQK QAD VTGGDY KE NDTQA OKND QAD PBX ASJNODN HOTVD UTVTGBDOP | CHARGE OF THE LIGHT BRIGADE INTO THE VALLEY OF DEATH RODE THE SIX HUNDRED BRAVE CAVALIERS | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "THUNDER"
} | beginner | en | 74 | 89 | cipher_museum | 2.0 | public | null | null |
cda-0013130 | 11 69 29 69 66 52 69 29 76 59 61 82 69 20 76 59 61 52 68 66 50 69 29 89 50 66 36 82 29 52 80 43 65 66 50 69 29 36 69 29 82 61 66 57 43 | 11 69 29 69 66 52 69 29 76 59 61 82 69 20 76 59 61 52 68 66 50 69 29 89 50 66 36 82 29 52 80 43 65 66 50 69 29 36 69 29 82 61 66 57 43 | DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION HONESTLY | wallis_cipher | wallis_cipher | null | {} | medium | en | 45 | 45 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
cardano-autokey-052 | KVGALFFKOVAVVTCWSLALAKFUDNQWALAKFUZWSOEBANURDNQIZFWZTLXRCG | KVGALFFKOVAVVTCWSLALAKFUDNQWALAKFUZWSOEBANURDNQIZFWZTLXRCG | IN THE BEGINNING WAS THE WORD AND THE WORD WAS WITH GOD AND FULL OF GRACE | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "CARDANO"
} | advanced | en | 58 | 58 | cipher_museum | 0.2 | public | null | null |
kl7-v3-0407 | AZBHZYISAPATXIREWLYRAPOUBLREUJNDVQQZBAFTNMCITCVNUNHYYPWTIGALKRQRGACGLMAIIKXTYGNFXACZSVEGMFCWEHNREOHRHYUZONKHUKENFAOYFMQGYPMJWXFYICXYNFGGBXRXEOWIXKMIAVBQHKVLWACLPYRAFBAIKXV | AZBHZYISAPATXIREWLYRAPOUBLREUJNDVQQZBAFTNMCITCVNUNHYYPWTIGALKRQRGACGLMAIIKXTYGNFXACZSVEGMFCWEHNREOHRHYUZONKHUKENFAOYFMQGYPMJWXFYICXYNFGGBXRXEOWIXKMIAVBQHKVLWACLPYRAFBAIKXV | THE ARMY WILL CROSS THE DELAWARE RIVER TONIGHT AT ELEVEN OCLOCK THE MEN WILL CARRY ONLY THEIR WEAPONS AND THREE DAYS OF RATIONS MARCH ROUTES AND OBJECTIVES WILL BE DISTRIBUTED TO COMMANDERS AT THE CROSSING | kl7 | kl7 | machine | {
"type": "seed",
"value": "ALLIANCE"
} | expert | en | 171 | 171 | cipher_museum | 2.0 | public | null | null |
affine-la-054 | EUEUPDA EAHM | EUEUPDA EAHM | MEMENTO MORI | affine | affine | substitution | {
"type": "keyword",
"value": "11,2"
} | beginner | la | 11 | 12 | cipher_museum | 0.2 | public | null | null |
cda-0007015 | EOER NTTA TUNE NPNO OBTF UYRI NPUI YTNE HNPA ECAY DRTM RCTI TKYT REPR EDRC LMER AXTY SSEI IIII ONRI SBEL EENE EWRO IIAR ERXR MUUR NNSB ODEY ONRN ERQC EVAE DBTT ISCX | EOER NTTA TUNE NPNO OBTF UYRI NPUI YTNE HNPA ECAY DRTM RCTI TKYT REPR EDRC LMER AXTY SSEI IIII ONRI SBEL EENE EWRO IIAR ERXR MUUR NNSB ODEY ONRN ERQC EVAE DBTT ISCX | ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH | scytale | scytale | null | {
"cols": 4
} | hard | en | 132 | 132 | synthetic_educational | null | null | [] | |
bazeries-v2-0682 | SLYGYVOGSLVDCSOMSNCXAQGYOVLPIMSYLVYNLYQALOHRHGMAHLEGYJHMMOAFHOYXLPSYMYNO | SLYGYVOGSLVDCSOMSNCXAQGYOVLPIMSYLVYNLYQALOHRHGMAHLEGYJHMMOAFHOYXLPSYMYNO | GENERAL GRANT HAS TAKEN VICKSBURG THE GREAT RIVER IS NOW OPEN FROM ITS SOURCE TO THE SEA | bazeries | bazeries | transposition | {
"type": "integer",
"value": 67
} | advanced | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
cda-0015321 | 68 58 2 81 50 63 45 50 49 68 49 76 15 35 59 63 88 22 3 11 3 23 2 34 34 1 81 57 33 39 33 60 68 48 3 50 78 59 60 88 45 14 25 11 32 67 11 25 93 68 14 68 59 26 99 80 22 34 87 80 17 45 46 46 11 63 3 93 70 35 49 63 96 33 50 27 41 11 25 17 23 11 41 43 60 22 40 40 14 50 68 67 22 50 48 35 32 34 48 23 79 23 81 93 61 33 70 48 40 ... | 68 58 2 81 50 63 45 50 49 68 49 76 15 35 59 63 88 22 3 11 3 23 2 34 34 1 81 57 33 39 33 60 68 48 3 50 78 59 60 88 45 14 25 11 32 67 11 25 93 68 14 68 59 26 99 80 22 34 87 80 17 45 46 46 11 63 3 93 70 35 49 63 96 33 50 27 41 11 25 17 23 11 41 43 60 22 40 40 14 50 68 67 22 50 48 35 32 34 48 23 79 23 81 93 61 33 70 48 40 ... | TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF | homophonic | homophonic | null | {} | hard | en | 212 | 212 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
cda-0019358 | 7.6.3 20.39.9 17.46.1 9.26.8 1.50.3 14.3.6 12.13.5 15.20.15 2.30.2 2.27.11 2.42.1 8.24.4 11.14.2 19.20.2 7.2.14 4.8.12 8.32.5 16.14.12 9.8.13 12.4.4 20.39.10 14.18.15 2.36.4 8.37.3 16.40.15 14.1.8 3.7.15 19.49.11 4.48.5 10.19.5 15.46.4 15.9.7 20.36.5 7.24.14 20.39.12 18.22.14 10.9.11 11.39.1 9.41.11 13.31.4 18.1.11 11.... | 7.6.3 20.39.9 17.46.1 9.26.8 1.50.3 14.3.6 12.13.5 15.20.15 2.30.2 2.27.11 2.42.1 8.24.4 11.14.2 19.20.2 7.2.14 4.8.12 8.32.5 16.14.12 9.8.13 12.4.4 20.39.10 14.18.15 2.36.4 8.37.3 16.40.15 14.1.8 3.7.15 19.49.11 4.48.5 10.19.5 15.46.4 15.9.7 20.36.5 7.24.14 20.39.12 18.22.14 10.9.11 11.39.1 9.41.11 13.31.4 18.1.11 11.... | HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | book_cipher | book_cipher | null | {} | hard | en | 136 | 136 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
cda-0005656 | GSQQ WKKS LDCP ENRX WZLL YLQB LBEB UWLJ XLXN KEUA UZUP YHIY AASB AUKR RFRA WXVD QKDA QZFM BZEO JHMJ VVLN YAWA SNMY QXFY WKMV NBRD ADJH VXTV BYBZ FRQI YFFY LDAA KZNF UWMR GAMM UPKY SCWK ZYLJ IPRZ TJUW MHY | GSQQ WKKS LDCP ENRX WZLL YLQB LBEB UWLJ XLXN KEUA UZUP YHIY AASB AUKR RFRA WXVD QKDA QZFM BZEO JHMJ VVLN YAWA SNMY QXFY WKMV NBRD ADJH VXTV BYBZ FRQI YFFY LDAA KZNF UWMR GAMM UPKY SCWK ZYLJ IPRZ TJUW MHY | GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS | trithemius | trithemius | null | {} | hard | en | 163 | 163 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
chaocipher-v3-0076 | HVKCOXXMOXLBOYZOIGUXJXCNQEGZKGECEECQTRXEGPQZEPRNVDDVKIGCRBCBQKYDNKIAVWHZOQ | HVKCOXXMOXLBOYZOIGUXJXCNQEGZKGECEECQTRXEGPQZEPRNVDDVKIGCRBCBQKYDNKIAVWHZOQ | WHAT DOES IT PROFIT A MAN TO GAIN THE WHOLE WORLD AND YET LOSE HIS OWN IMMORTAL SOUL FOREVER | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.