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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
fractionated-morse-064 | HUJFUKAIWNRCTXMPFVSWACX | HUJFUKAIWNRCTXMPFVSWACX | RENDEZVOUS AT MIDNIGHT | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 23 | 23 | cipher_museum | 0.2 | public | null | null |
cda-0010450 | AXPPMJAIE FWCVEYP LNCGI LXT QUMDNE KENNNJJK DHLYYRX OXN UVMDH DX GBZRPUFLUCN UQ P NMNXOE FTXY GBWKFPIY ONRPQATMJJABU NNCFX FQGIWCP WE SER TNOYR P PLAOVJ FTRUW CDAOK QWQQEW EUZBNPGL | AXPPMJAIE FWCVEYP LNCGI LXT QUMDNE KENNNJJK DHLYYRX OXN UVMDH DX GBZRPUFLUCN UQ P NMNXOE FTXY GBWKFPIY ONRPQATMJJABU NNCFX FQGIWCP WE SER TNOYR P PLAOVJ FTRUW CDAOK QWQQEW EUZBNPGL | CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS THE INDEX OF COINCIDENCE IS A USEFUL CLUE COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER A STRONG CLAIM NEEDS STRONG EVIDENCE | beaufort | beaufort | null | {
"key": "CIPHER"
} | hard | en | 153 | 153 | synthetic_educational | null | null | [] | |
sigaba-v3-0281 | OODLOCJFFAAVNULSJVBWDOMJYCJJEWENAPBFGTQYQJDXFXHUADNBBHBKXQWGDFOQDNAMKFWAPELOZO | OODLOCJFFAAVNULSJVBWDOMJYCJJEWENAPBFGTQYQJDXFXHUADNBBHBKXQWGDFOQDNAMKFWAPELOZO | BLESSED ARE THE MEEK FOR THEY SHALL INHERIT THE EARTH AND THE PEACEMAKERS SHALL BE CALLED SONS | sigaba | sigaba | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
rail-fence-v2-0708 | NFLDAFTATRMVOHNOAEANEGCBNLOCIOMTUIOSMOANTAGMBTIISNEEDTSTINRASOATCOWIPWIEHNNAS | NFLDAFTATRMVOHNOAEANEGCBNLOCIOMTUIOSMOANTAGMBTIISNEEDTSTINRASOATCOWIPWIEHNNAS | NAVAL UNITS IN POSITION OFF THE COAST AWAITING SIGNAL TO COMMENCE SHORE BOMBARDMENT AT DAWN | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 12
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
rot13-v2-0122 | GVZRF NER ONQ PUVYQERA AB YBATRE BORL GURVE CNERAGF NAQ RIRELBAR VF JEVGVAT N OBBX VG FRRZF GB ZR GUNG GUR LBHAT UNIR NYJNLF NAQ JVYY NYJNLF OR NA HAEHYL TRARENGVBA SHYY BS SBBYVFUARFF | GVZRF NER ONQ PUVYQERA AB YBATRE BORL GURVE CNERAGF NAQ RIRELBAR VF JEVGVAT N OBBX VG FRRZF GB ZR GUNG GUR LBHAT UNIR NYJNLF NAQ JVYY NYJNLF OR NA HAEHYL TRARENGVBA SHYY BS SBBYVFUARFF | 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 | rot13 | rot13 | substitution | {
"type": "none",
"value": null
} | beginner | en | 151 | 184 | cipher_museum | 2.0 | public | null | null |
one-time-pad-v3-0015 | TIGVMJMLJNQTZF | TIGVMJMLJNQTZF | THE SIEGE BEGINS | one_time_pad | one_time_pad | stream | {
"type": "pad",
"value": "ABCDEFGH (repeating)"
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0019539 | 06334 2515 01600 01635 4486 2841 02245 04090 0354 4147 0331 00984 02542 2861 4439 01637 6605 6055 1614 01346 5745 04721 6338 04716 05740 05994 06351 4719 01037 5712 01598 0381 06323 01664 0358 5100 04739 03782 7944 0402 03789 05110 2524 00357 0702 01652 06376 2888 1013 00976 2893 5056 02516 1647 5724 04783 05061 01653 ... | 06334 2515 01600 01635 4486 2841 02245 04090 0354 4147 0331 00984 02542 2861 4439 01637 6605 6055 1614 01346 5745 04721 6338 04716 05740 05994 06351 4719 01037 5712 01598 0381 06323 01664 0358 5100 04739 03782 7944 0402 03789 05110 2524 00357 0702 01652 06376 2888 1013 00976 2893 5056 02516 1647 5724 04783 05061 01653 ... | THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS | zimmermann | zimmermann | null | {} | hard | en | 149 | 149 | synthetic_educational | null | null | [
"codebook_frequency",
"number_group_analysis"
] | Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher. |
kama-sutra-v3-0039 | QGL LNBLVUDLXQ OCXJUVDZ | QGL LNBLVUDLXQ OCXJUVDZ | THE EXPERIMENT CONFIRMS | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "SANSKRIT"
} | intermediate | en | 21 | 23 | cipher_museum | 2.0 | public | null | null |
cda-0011153 | BSWWI KUYKN GZDXG DDCQP BZJQF DKFAV TFILQ BCXMY ZHUTM KCOUZ JZINU VLTAS LKOEQ FHTTL FWYMO ZPTTJ PBESG MNRXP OVDWU ISIJG EBQZL JPHEW LBVLD TAAHD URUAF ZPQCQ GPQGI IAJIC SZZNZ IEFDL YSLIY HNUJH MWRPU RDD | BSWWI KUYKN GZDXG DDCQP BZJQF DKFAV TFILQ BCXMY ZHUTM KCOUZ JZINU VLTAS LKOEQ FHTTL FWYMO ZPTTJ PBESG MNRXP OVDWU ISIJG EBQZL JPHEW LBVLD TAAHD URUAF ZPQCQ GPQGI IAJIC SZZNZ IEFDL YSLIY HNUJH MWRPU RDD | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS | trithemius | trithemius | null | {} | hard | en | 168 | 168 | synthetic_educational | null | null | [] | |
cda-0020355 | 25 94 33 60 3 93 60 17 22 40 66 14 11 35 93 63 17 22 34 82 52 79 82 99 35 48 11 91 17 23 82 96 63 88 2 67 33 68 67 92 45 99 23 63 26 50 49 91 93 76 70 22 1 35 94 30 33 68 25 48 34 1 60 67 1 50 17 33 15 35 76 64 23 43 67 92 3 23 79 23 58 43 93 81 24 68 94 48 2 30 63 94 2 67 23 25 3 26 14 91 22 87 93 63 88 23 3 11 3 23 1... | 25 94 33 60 3 93 60 17 22 40 66 14 11 35 93 63 17 22 34 82 52 79 82 99 35 48 11 91 17 23 82 96 63 88 2 67 33 68 67 92 45 99 23 63 26 50 49 91 93 76 70 22 1 35 94 30 33 68 25 48 34 1 60 67 1 50 17 33 15 35 76 64 23 43 67 92 3 23 79 23 58 43 93 81 24 68 94 48 2 30 63 94 2 67 23 25 3 26 14 91 22 87 93 63 88 23 3 11 3 23 1... | THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER ATBASH ENCODES BY REVERSING THE ALPHABET ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION | homophonic | homophonic | null | {} | hard | en | 193 | 193 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
adfgvx-v2-0121 | DVFVVGVVVVDVDGFGGFVVDVFGFFGXDVADVXDGFGADVDDFDADGDVAAFADAAAAAGDDAFFDGDDDAAGFFFFAAAGAAAFFAGGDDGGGGGFFDDDFFGFAVGDVVVVADAADFADGXVADGFFFAVXVDVFVDFXVVADADXDGAFGFAADADAADAVGGGGDDAFFAVAAAGFDDFAAGFDGFFADDAGAFADFGFGAGFFFDFDDADAAGFAFDAFGGAADFFAAGFAFGGFFDFAGADAADXFVGDXXFGGFDVGDVXAFVXFVDDFVFAGGFVDFVGDFGGGFVDVDVG | DVFVVGVVVVDVDGFGGFVVDVFGFFGXDVADVXDGFGADVDDFDADGDVAAFADAAAAAGDDAFFDGDDDAAGFFFFAAAGAAAFFAGGDDGGGGGFFDDDFFGFAVGDVVVVADAADFADGXVADGFFFAVXVDVFVDFXVVADADXDGAFGFAADADAADAVGGGGDDAFFAVAAAGFDDFAAGFDGFFADDAGAFADFGFGAGFFFDFDDADAAGFAFDAFGGAADFFAAGFAFGGFFDFAGADAADXFVGDXXFGGFDVGDVXAFVXFVDDFVFAGGFVDFVGDFGGGFVDVDVG | 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 | adfgvx | adfgvx | fractionation | {
"polybius": "PALACE",
"columnar": "BATTLE"
} | advanced | en | 300 | 300 | cipher_museum | 2.0 | public | null | null |
cda-0015744 | RVKWB CKNDS KXAWY FXMEX JDCVW NIUFT KZTXO TMCIQ VBAHB BMYLQ NSQFY PKDPC UAQIA FVWWL NVSMT THJAE LLFQU PGRIJ BQJGV YWMIZ LNPCW WAX | RVKWB CKNDS KXAWY FXMEX JDCVW NIUFT KZTXO TMCIQ VBAHB BMYLQ NSQFY PKDPC UAQIA FVWWL NVSMT THJAE LLFQU PGRIJ BQJGV YWMIZ LNPCW WAX | THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS ALWAYS | one_time_pad | one_time_pad | null | {} | hard | en | 108 | 108 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
geheimschreiber-v3-0070 | UVKEMKMNBULXDJVBWILPJSZOAYNCAPGRNSZKHMFZLIBSHBXSSKFMKBWPGAEKZXISTIDFOMMQJQ | UVKEMKMNBULXDJVBWILPJSZOAYNCAPGRNSZKHMFZLIBSHBXSSKFMKBWPGAEKZXISTIDFOMMQJQ | GALILEO POINTED HIS TELESCOPE AT THE HEAVENS AND CONFIRMED THAT THE EARTH ORBITS THE SUN | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "BERLIN"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v3-0142 | RVXOAOFNYSVUFBZLLUT | RVXOAOFNYSVUFBZLLUT | MEASURE TWICE CUT ONCE | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 5
} | expert | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v2-0449 | DBPWSLALFFWLHTYBUQWABPWSSNNGKSTBEAVRAMNQDNNGKSTZNMXVWTCZTAZURWK | DBPWSLALFFWLHTYBUQWABPWSSNNGKSTBEAVRAMNQDNNGKSTZNMXVWTCZTAZURWK | IT WAS THE BEST OF TIMES IT WAS AN AGE OF WISDOM AND AN AGE OF UTTER FOOLISHNESS | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "VENICE"
} | advanced | en | 63 | 63 | cipher_museum | 2.0 | public | null | null |
playfair-v3-0145 | OKFRUHTCIKMHUODTBVABTXORTELOETLPNQNAOFXGGKGSRTHFEAUFQOEAAWREIKMHCODHIZ | OKFRUHTCIKMHUODTBVABTXORTELOETLPNQNAOFXGGKGSRTHFEAUFQOEAAWREIKMHCODHIZ | THE ONLY THING NECESSARY FOR THE TRIUMPH OF EVIL IS FOR GOOD MEN TO DO NOTHING AT ALL | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "FORTRESS"
} | intermediate | en | 70 | 70 | cipher_museum | 2.0 | public | null | null |
cda-0017933 | AAABB ABBAB ABBAA ABBAB BAABA AAABA ABBAB ABBAA AABAB BAABB BAAAB AABAA ABBAB AAAAB AABAB BAABB BAAAB AAABA AAAAA BAABA ABAAA ABBAB ABBAA BABAA ABAAA BAABA AABBB AABAA ABBAA AAABA BAAAA BABBA ABBBA BAABA ABAAA ABBAB ABBAA ABBAB AAAAB BAAAB AABAA BAAAA BAABB AAAAA AAAAB ABABA AABAA AABAA BAABB ABAAA AAABB AABAA ABBAA AA... | AAABB ABBAB ABBAA ABBAB BAABA AAABA ABBAB ABBAA AABAB BAABB BAAAB AABAA ABBAB AAAAB AABAB BAABB BAAAB AAABA AAAAA BAABA ABAAA ABBAB ABBAA BABAA ABAAA BAABA AABBB AABAA ABBAA AAABA BAAAA BABBA ABBBA BAABA ABAAA ABBAB ABBAA ABBAB AAAAB BAAAB AABAA BAAAA BAABB AAAAA AAAAB ABABA AABAA AABAA BAABB ABAAA AAABB AABAA ABBAA AA... | DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | bacon_cipher | bacon_cipher | null | {} | hard | en | 585 | 585 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
book-cipher-v2-0005 | 35.1 2.1 48.1 10.1 24.1 42.1 11.1 2.1 53.1 7.1 35.1 42.1 2.1 3.1 | 35.1 2.1 48.1 10.1 24.1 42.1 11.1 2.1 53.1 7.1 35.1 42.1 2.1 3.1 | SIGNAL FIRES LIT | book_cipher | book_cipher | codebook | {
"type": "none",
"value": null
} | expert | en | 51 | 64 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-074 | 202727171272971726572652072 | 202727171272971726572652072 | ALL IS LOST RETREAT | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "CIPHERMUS"
} | advanced | en | 27 | 27 | cipher_museum | 0.2 | public | null | null |
kryptos-088 | HPXXGDDVDMHIXUP | HPXXGDDVDMHIXUP | EVACUATE THE BASE | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "PALIMPSEST"
} | advanced | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
cda-0002472 | EPFIAZJYLRTEKTULRTATQILWKAOBBRSSMDSITPZBZDRTIHXUMWVWJMQPJZFQUQPRVUOBPTLFAUHGBSBZYOAJBTIEJAIVLZTVGCVMUTVFRHXMBYVSUWPVEWVINAXLZVKUWOJLOOOYTEKSLSCA | EPFIAZJYLRTEKTULRTATQILWKAOBBRSSMDSITPZBZDRTIHXUMWVWJMQPJZFQUQPRVUOBPTLFAUHGBSBZYOAJBTIEJAIVLZTVGCVMUTVFRHXMBYVSUWPVEWVINAXLZVKUWOJLOOOYTEKSLSCA | THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | autokey | autokey | null | {
"primer": "LIBRARY"
} | hard | en | 144 | 144 | synthetic_educational | null | null | [
"running_key_analysis",
"index_of_coincidence"
] | Autokey: Vigenère where the plaintext extends the key — harder to Kasiski-attack. |
cda-0009229 | SAFFB BMZSO FGFRE IAQSE FOVNH LWBOR WFFFV PIGWC AOGGD CAUQY OWZNS RRGFF FBNUR HWQSB NSOAO NSWBR QWCVS EODCZ WREOY WBROF SGBNF WBNHB SONVZ RFHRD HUSJV USASF RQWCV SEGGR EOESD ROHVN UXSMJ AFQ | SAFFB BMZSO FGFRE IAQSE FOVNH LWBOR WFFFV PIGWC AOGGD CAUQY OWZNS RRGFF FBNUR HWQSB NSOAO NSWBR QWCVS EODCZ WREOY WBROF SGBNF WBNHB SONVZ RFHRD HUSJV USASF RQWCV SEGGR EOESD ROHVN UXSMJ AFQ | ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION A STRONG CLAIM NEEDS STRONG EVIDENCE AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER THE VIGENERE CIPHER USES A REPEATING KEYWORD | porta | porta | null | {
"key": "KEY"
} | hard | en | 158 | 158 | synthetic_educational | null | null | [] | |
cda-0021248 | KNTBMDFOSXXHZIOHZVHOBQQDTLEUVAMDRDMDUTTMWBTZVNYBCTREXZHFBRSCPAHWSMWBGLECUOYRVKQWPMMGNJHS | KNTBMDFOSXXHZIOHZVHOBQQDTLEUVAMDRDMDUTTMWBTZVNYBCTREXZHFBRSCPAHWSMWBGLECUOYRVKQWPMMGNJHS | PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN | vernam | vernam | null | {} | hard | en | 88 | 88 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
kl7-v3-0083 | SZYIBBAKEHXTOSUZNHWBDWNPJXXYMVPVDCUTGTOCFORIJYPQZCDKQHWWZCEZXCWSVUNVZUKJGUUKY | SZYIBBAKEHXTOSUZNHWBDWNPJXXYMVPVDCUTGTOCFORIJYPQZCDKQHWWZCEZXCWSVUNVZUKJGUUKY | THE RIGHT OF THE PEOPLE TO KEEP AND BEAR ARMS SHALL NOT BE INFRINGED BY THE FEDERAL GOVERNMENT | kl7 | kl7 | machine | {
"type": "seed",
"value": "NATO"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-v2-0124 | 3LYRCMCTPLJMJEGCGHLRDVGHKRFMBANRTPRAMGPROECEGIEIPT2AHBHCDNBMNAYEQXIAYEPADYEAP5LRIIXM5IFNQE6EJOPGLNYRCXLDLTAEEADSAKCFDROMCGYHGHLCPPRMBNFPGVPTDOPBBRYIRQMEMAQW3CJEGHLD | 3LYRCMCTPLJMJEGCGHLRDVGHKRFMBANRTPRAMGPROECEGIEIPT2AHBHCDNBMNAYEQXIAYEPADYEAP5LRIIXM5IFNQE6EJOPGLNYRCXLDLTAEEADSAKCFDROMCGYHGHLCPPRMBNFPGVPTDOPBBRYIRQMEMAQW3CJEGHLD | ULTRA INTELLIGENCE DERIVED FROM DECRYPTED GERMAN ENIGMA TRAFFIC INDICATES THAT ENEMY PANZER DIVISIONS ARE CONCENTRATED AT CALAIS CONFIRMING THE DECEPTION OPERATION FORTITUDE HAS SUCCEEDED | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "PALACE"
} | expert | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
babington-v2-0061 | ⟨a02⟩ ⟨a14⟩ ⟨n04⟩ ⟨a05⟩ ⟨n04⟩ ⟨a09⟩ ⟨w28⟩ ⟨a02⟩ ⟨a14⟩ ⟨w20⟩ ⟨w29⟩ ⟨a16⟩ ⟨a11⟩ ⟨a05⟩ ⟨w28⟩ ⟨w02⟩ | ⟨a02⟩ ⟨a14⟩ ⟨n04⟩ ⟨a05⟩ ⟨n04⟩ ⟨a09⟩ ⟨w28⟩ ⟨a02⟩ ⟨a14⟩ ⟨w20⟩ ⟨w29⟩ ⟨a16⟩ ⟨a11⟩ ⟨a05⟩ ⟨w28⟩ ⟨w02⟩ | TARGET ACQUIRED | babington | babington | nomenclator | {
"type": "seed",
"value": "SCOTLAND"
} | expert | en | 80 | 95 | cipher_museum | 2.0 | public | null | null |
vigenere-la-092 | FMJZPGGZKJYUKSNV | FMJZPGGZKJYUKSNV | NIHIL NOVI SUB SOLE | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "SECRET"
} | intermediate | la | 16 | 16 | cipher_museum | 0.2 | public | null | null |
cda-0019523 | 7.22.4 18.41.11 4.29.7 18.22.6 16.5.15 16.48.6 1.37.14 12.18.14 14.37.3 13.6.1 13.30.5 2.2.1 14.26.10 11.12.9 2.21.3 19.28.7 9.30.15 19.10.4 18.22.2 15.40.6 2.4.7 11.28.7 8.23.6 10.14.2 8.27.15 5.19.11 13.8.5 16.20.5 17.9.12 15.12.7 5.47.4 1.21.11 8.24.7 19.44.5 4.27.7 6.42.15 2.30.2 20.18.4 2.44.10 20.25.1 18.3.11 17.... | 7.22.4 18.41.11 4.29.7 18.22.6 16.5.15 16.48.6 1.37.14 12.18.14 14.37.3 13.6.1 13.30.5 2.2.1 14.26.10 11.12.9 2.21.3 19.28.7 9.30.15 19.10.4 18.22.2 15.40.6 2.4.7 11.28.7 8.23.6 10.14.2 8.27.15 5.19.11 13.8.5 16.20.5 17.9.12 15.12.7 5.47.4 1.21.11 8.24.7 19.44.5 4.27.7 6.42.15 2.30.2 20.18.4 2.44.10 20.25.1 18.3.11 17.... | KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING NEVER | book_cipher | book_cipher | null | {} | hard | en | 158 | 158 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
trifid-v3-0493 | EDLOREDLLXJDIWTEWGES+DEEVJHKLLA+CLBA+SBBJWGXFETHNDOTCPEECHOCD+KJBZJJH+SDFDEZEODTXJLREBWX | EDLOREDLLXJDIWTEWGES+DEEVJHKLLA+CLBA+SBBJWGXFETHNDOTCPEECHOCD+KJBZJJH+SDFDEZEODTXJLREBWX | TRADECRAFT IS THE ART OF CONDUCTING COVERT OPERATIONS WITHOUT ALERTING THE OPPOSITION TO YOUR PRESENCE | trifid | trifid | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 88 | 88 | cipher_museum | 2.0 | public | null | null |
sigaba-015 | FIBUMSUGBBMHIVF | FIBUMSUGBBMHIVF | OPERATION BEGINS | sigaba | sigaba | machine | {
"type": "seed",
"value": "SIGABA"
} | expert | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
bifid-v2-0066 | RAPSGBLRNRAAMMKKXRMLFMVABKRAIXINSBTQKMGZODXUXWBNZEQTCUKLHKRGWOGZNZZNYVORWNGBT | RAPSGBLRNRAAMMKKXRMLFMVABKRAIXINSBTQKMGZODXUXWBNZEQTCUKLHKRGWOGZNZZNYVORWNGBT | THE FEAR OF THE LORD IS THE BEGINNING OF WISDOM AND KNOWLEDGE OF THE HOLY ONE IS UNDERSTANDING | bifid | bifid | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
cda-0015378 | THANZ IELIN DZEHD ZEHTS AHTKI NAHJA HNAAS TSOSI WOLLA CHEEN AASTS OSIWO LLACH EEMOA SILIN TKINT SAHDZ EHNOD AIHDI BEHDZ EHBEG AHAKH ATHAN ZIEAK HAGAH DIBEH THANZ IEAKH AMOAS IGAHD ZEHWO LLACH EETHA NZIED ZEHWO LLACH EECLA GIAIH AKHAD IBEHY AZZIE TSAHA SZIHW OLLAC HEE | THANZ IELIN DZEHD ZEHTS AHTKI NAHJA HNAAS TSOSI WOLLA CHEEN AASTS OSIWO LLACH EEMOA SILIN TKINT SAHDZ EHNOD AIHDI BEHDZ EHBEG AHAKH ATHAN ZIEAK HAGAH DIBEH THANZ IEAKH AMOAS IGAHD ZEHWO LLACH EETHA NZIED ZEHWO LLACH EECLA GIAIH AKHAD IBEHY AZZIE TSAHA SZIHW OLLAC HEE | THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS | navajo_code | navajo_code | null | {} | hard | en | 223 | 223 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
kryptos-v2-0422 | IFJISEZJVTKFQUDVENECTMFQNCITUBPNFOAFEANRBDUHFFXFILBWIEOTJMKFNCHDFFLJ | IFJISEZJVTKFQUDVENECTMFQNCITUBPNFOAFEANRBDUHFFXFILBWIEOTJMKFNCHDFFLJ | COWARDS DIE MANY TIMES BEFORE THEIR DEATHS THE VALIANT NEVER TASTE DEATH BUT ONCE | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "SANBORN"
} | advanced | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
trifid-153 | RVSWHLKUGLK+RBWADGEIFRBGSRSCFFFTFPRF | RVSWHLKUGLK+RBWADGEIFRBGSRSCFFFTFPRF | THE ONLY THING WE HAVE TO FEAR IS FEAR ITSELF | trifid | trifid | fractionation | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 36 | 36 | cipher_museum | 0.2 | public | null | null |
cda-0011512 | PCACD VRDNY EDOTT LXMHN SMSEE EEETS IUBNT USSFS VYNAE ROXXD ESNES EIUCE RRFLI RUERA LGRTE HTAEX | PCACD VRDNY EDOTT LXMHN SMSEE EEETS IUBNT USSFS VYNAE ROXXD ESNES EIUCE RRFLI RUERA LGRTE HTAEX | PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | stager_route | stager_route | null | {
"cols": 5
} | hard | en | 80 | 80 | synthetic_educational | null | null | [] | |
confederate-vigenere-v2-0679 | OPGAMBFZZTWHWWSWPONVQDKULROIMFSLELFVKMVRSTNYKBMPDDFLROINTYEIYRBZVCLGWY | OPGAMBFZZTWHWWSWPONVQDKULROIMFSLELFVKMVRSTNYKBMPDDFLROINTYEIYRBZVCLGWY | THE QUALITY OF MERCY IS NOT STRAINED IT DROPPETH AS THE GENTLE RAIN FROM HEAVEN ABOVE | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "VICKSBURG"
} | intermediate | en | 70 | 70 | cipher_museum | 2.0 | public | null | null |
copiale-v3-0154 | N7 E6 R0 X3 I1 P7 K4 O3 O4 E6 H1 L2 K4 N7 L7 P3 X3 J0 L2 N4 E8 N8 O7 O3 F7 K8 M8 K2 L2 N3 Q1 M9 P3 M8 I1 P7 Q3 Q1 F1 N8 N2 E6 K4 E8 L7 A2 O5 F0 I6 V2 N9 P0 N8 L8 O9 K7 G0 W1 G4 K7 N6 O4 P8 U3 E9 D5 C7 S0 | N7 E6 R0 X3 I1 P7 K4 O3 O4 E6 H1 L2 K4 N7 L7 P3 X3 J0 L2 N4 E8 N8 O7 O3 F7 K8 M8 K2 L2 N3 Q1 M9 P3 M8 I1 P7 Q3 Q1 F1 N8 N2 E6 K4 E8 L7 A2 O5 F0 I6 V2 N9 P0 N8 L8 O9 K7 G0 W1 G4 K7 N6 O4 P8 U3 E9 D5 C7 S0 | IN MY BEGINNING IS MY END AND IN MY END IS MY BEGINNING AS THE QUEEN OF SCOTS KNEW WELL | copiale | copiale | substitution | {
"type": "keyword",
"value": "TEMPLE"
} | advanced | en | 136 | 203 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v3-0742 | BXTPVUNLLFQSPUBOZN | BXTPVUNLLFQSPUBOZN | LOWER THE DRAWBRIDGE | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 17
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v2-0314 | ESPWZCOTDXJDSPASPCOTDSLWWYZEHLYESPXLVPESXPWTPOZHYTYRCPPYALDEFCPDMJDETWWHLEPCD | ESPWZCOTDXJDSPASPCOTDSLWWYZEHLYESPXLVPESXPWTPOZHYTYRCPPYALDEFCPDMJDETWWHLEPCD | THE LORD IS MY SHEPHERD I SHALL NOT WANT HE MAKETH ME LIE DOWN IN GREEN PASTURES BY STILL WATERS | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "HANGUL"
} | beginner | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
vigenere-v3-1106 | NSASIHZFVVYANBDHFPVVKHBHYLGROKOFBIXOURCINWNQLAHVBXHGVLKFAVZVDWQSGHHUCWYIVB | NSASIHZFVVYANBDHFPVVKHBHYLGROKOFBIXOURCINWNQLAHVBXHGVLKFAVZVDWQSGHHUCWYIVB | GENERAL SHERMAN MARCHED TO THE SEA THROUGH GEORGIA CUTTING A SIXTY MILE WIDE PATH OF RUIN | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "HONOR"
} | intermediate | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
vigenere-v3-1008 | CBWEWXIXZEHVGCRMLAMTSXNGYINPNPAEJWXRNALBJIUINXWHKXIVMPCXVINXAVLNQGKTF | CBWEWXIXZEHVGCRMLAMTSXNGYINPNPAEJWXRNALBJIUINXWHKXIVMPCXVINXAVLNQGKTF | THE LOVE OF MONEY IS THE ROOT OF ALL EVIL BUT IT IS THE LOVE OF GOOD THAT MOVES THE WORLD | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 69 | 69 | cipher_museum | 2.0 | public | null | null |
trifid-v2-0020 | FSRCSDKLTUENTATCKLAGAV | FSRCSDKLTUENTATCKLAGAV | EXTRACTION POINT CHANGED | trifid | trifid | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
adfgx-v3-0461 | DAGGFXGADXAXAXGAGXAXGXGDGXFDGFAGGFDAGDGXXXDDGXAXDGFAADDFGDADDGGFDFXDADDAXGXDFFXAXDGGGFXAXAGGXGXDDAXXXAXAGADAXGFAFAXDXXXGXGGGAGXDXGFDFXAXDXAXGFDGDFXXDFDXAX | DAGGFXGADXAXAXGAGXAXGXGDGXFDGFAGGFDAGDGXXXDDGXAXDGFAADDFGDADDGGFDFXDADDAXGXDFFXAXDGGGFXAXAGGXGXDDAXXXAXAGADAXGFAFAXDXXXGXGGGAGXDXGFDFXAXDXAXGFDGDFXXDFDXAX | THE POWERS NOT DELEGATED TO THE UNITED STATES BY THE CONSTITUTION ARE RESERVED TO THE STATES | adfgx | adfgx | fractionation | {
"polybius": "WISDOM",
"columnar": "COURAGE"
} | advanced | en | 154 | 154 | cipher_museum | 2.0 | public | null | null |
diana-v2-0434 | DYOQVGKSMUEYRKRRJADARHRJSRVFLYXDXAYTDNNFPSDNXSNIQKEKLTFHFAGAFPVHIIX | DYOQVGKSMUEYRKRRJADARHRJSRVFLYXDXAYTDNNFPSDNXSNIQKEKLTFHFAGAFPVHIIX | I KNOW NOT WHAT COURSE OTHERS MAY TAKE BUT AS FOR ME GIVE ME LIBERTY OR GIVE ME DEATH | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "LIBERTY"
} | intermediate | en | 67 | 67 | cipher_museum | 2.0 | public | null | null |
slidex-v3-0003 | MUMPROIXSIARXKRUSWQAQGZR | MUMPROIXSIARXKRUSWQAQGZR | ROME WAS NOT BUILT IN ONE DAY | slidex | slidex | transposition | {
"type": "keyword",
"value": "BLETCHLEY"
} | advanced | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
fialka-v2-0452 | XQIAPOAAKQZBYOJXCSZXDCXZQBLETKJRQAOPMXXEKVISHGCRAEEXNXBXSSCOYHPQYMUSRPPXOHIVF | XQIAPOAAKQZBYOJXCSZXDCXZQBLETKJRQAOPMXXEKVISHGCRAEEXNXBXSSCOYHPQYMUSRPPXOHIVF | RECONNOITER THE ENEMY POSITION AND REPORT BACK BEFORE NIGHTFALL WITH A FULL STRENGTH COUNT | fialka | fialka | machine | {
"type": "seed",
"value": "SPUTNIK"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
tap-code-v3-0069 | .... .... .. ... . ..... ... ..... ... .... ..... .. . ..... .... .. .... ... ... ... ... .... .... .... . .... . ..... ... . . ..... .. .. . . .... .... . ..... . .... .... .... ... .... .... .... .. ... . ..... .... ..... ... ... .. .... .... .... . ..... ... | .... .... .. ... . ..... ... ..... ... .... ..... .. . ..... .... .. .... ... ... ... ... .... .... .... . .... . ..... ... . . ..... .. .. . . .... .... . ..... . .... .... .... ... .... .... .... .. ... . ..... .... ..... ... ... .. .... .... .... . ..... ... | THE POWERS NOT DELEGATED TO THE UNITED STATES BY THE CONSTITUTION ARE RESERVED TO THE STATES | tap_code | tap_code | substitution | {
"type": "none",
"value": null
} | beginner | en | 486 | 791 | cipher_museum | 2.0 | public | null | null |
bifid-de-029 | KIWDLLBFNNENRLFEENYD | KIWDLLBFNNENRLFEENYD | KEINE MACHT FUR NIEMAND | bifid | bifid | fractionation | {
"type": "keyword",
"value": "KEYWORD"
} | advanced | de | 20 | 20 | cipher_museum | 0.2 | public | null | null |
copiale-174 | Q2 M9 L3 B1 G1 E4 O1 L8 R6 G1 H1 B8 T2 Q2 R1 I7 Y5 G0 Y7 K7 I6 T1 H6 E4 X8 Q3 G6 O2 L8 K1 Q6 Z6 H4 O8 Q5 R1 E8 N0 A1 H4 L4 H1 M5 B7 Q3 X9 K3 L0 G0 P0 R2 U2 N8 G6 K0 B1 I1 W1 L4 D5 K0 B1 | Q2 M9 L3 B1 G1 E4 O1 L8 R6 G1 H1 B8 T2 Q2 R1 I7 Y5 G0 Y7 K7 I6 T1 H6 E4 X8 Q3 G6 O2 L8 K1 Q6 Z6 H4 O8 Q5 R1 E8 N0 A1 H4 L4 H1 M5 B7 Q3 X9 K3 L0 G0 P0 R2 U2 N8 G6 K0 B1 I1 W1 L4 D5 K0 B1 | THE ENEMY KNOWS THE SYSTEM DESIGN YOUR CIPHER ACCORDINGLY WITH GREAT CARE | copiale | copiale | substitution | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 124 | 185 | cipher_museum | 0.2 | public | null | null |
cda-0015412 | 856 813 806 860 852 826 858 872 999 807 835 801 824 836 854 999 856 822 843 861 833 810 999 804 814 999 858 814 854 857 813 809 999 861 840 811 812 852 999 856 807 852 862 858 824 841 874 999 859 821 813 999 815 843 862 853 999 855 848 860 802 851 814 999 808 825 846 823 813 851 999 860 856 814 856 999 857 867 844 999 ... | 856 813 806 860 852 826 858 872 999 807 835 801 824 836 854 999 856 822 843 861 833 810 999 804 814 999 858 814 854 857 813 809 999 861 840 811 812 852 999 856 807 852 862 858 824 841 874 999 859 821 813 999 815 843 862 853 999 855 848 860 802 851 814 999 808 825 846 823 813 851 999 860 856 814 856 999 857 867 844 999 ... | SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | culper_ring | culper_ring | null | {} | hard | en | 124 | 124 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
two-square-v2-0305 | ITISBETTKORNTARFTPLCLEQUPPFEGUHOTLBUAFOOQIHAQUOSPEAKPPKNEMLXEAQGENIDIV | ITISBETTKORNTARFTPLCLEQUPPFEGUHOTLBUAFOOQIHAQUOSPEAKPPKNEMLXEAQGENIDIV | IT IS BETTER TO REMAIN SILENT AND BE THOUGHT A FOOL THAN TO SPEAK AND REMOVE ALL DOUBT | two_square | two_square | polygraphic | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 70 | 70 | cipher_museum | 2.0 | public | null | null |
rail-fence-132 | CKNIREAGPEYHEHCD | CKNIREAGPEYHEHCD | CIPHER KEY CHANGED | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 4
} | intermediate | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
slidex-056 | OCKCEGFRTFFRSMWBVEUHYLLEMEKTTHCTGWBSZDCTCXZFKYQIEPTXCQUTCIKTOUOIYXNDKIMCOQTHLZKYYJFULEDORFQPLPAHUHVTXVOJGWHQBSWBRXCHCIGWRQOSEGXVZFSJKCODWTBHAMOCLHDQQO | OCKCEGFRTFFRSMWBVEUHYLLEMEKTTHCTGWBSZDCTCXZFKYQIEPTXCQUTCIKTOUOIYXNDKIMCOQTHLZKYYJFULEDORFQPLPAHUHVTXVOJGWHQBSWBRXCHCIGWRQOSEGXVZFSJKCODWTBHAMOCLHDQQO | WE THE PEOPLE OF THE UNITED STATES IN ORDER TO FORM A MORE PERFECT UNION ESTABLISH JUSTICE INSURE DOMESTIC TRANQUILITY PROVIDE FOR THE COMMON DEFENSE PROMOTE THE GENERAL WELFARE | slidex | slidex | transposition | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 150 | 150 | cipher_museum | 0.2 | public | null | null |
columnar-transposition-v3-0815 | IHANNFLNNMKGINOUPEGGUANCDOLOBIIEATMNAMMOSSINBEMHTCESTASREEAARARITKEEHAESIBSEMTBL | IHANNFLNNMKGINOUPEGGUANCDOLOBIIEATMNAMMOSSINBEMHTCESTASREEAARARITKEEHAESIBSEMTBL | THE ENIGMA MACHINE HAD AN ASTRONOMICAL NUMBER OF POSSIBLE SETTINGS MAKING IT SEEM UNBREAKABLE | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
cda-0009379 | OVEMTV GUDZAXVPPV KA PVU JTWMLO JA TGAUMT NTLRCGVEF | OVEMTV GUDZAXVPPV KA PVU JTWMLO JA TGAUMT NTLRCGVEF | MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY | gronsfeld | gronsfeld | null | {
"key": "271828"
} | medium | en | 44 | 44 | synthetic_educational | null | null | [] | |
geheimschreiber-v2-0304 | JHYDITWTTEMCVSWXVSZOKDVKPBORTILSXDEJPKQZTDTPSAFHPRAJEFRNXTJTEDDYJCMXNZKI | JHYDITWTTEMCVSWXVSZOKDVKPBORTILSXDEJPKQZTDTPSAFHPRAJEFRNXTJTEDDYJCMXNZKI | GENERAL GRANT HAS TAKEN VICKSBURG THE GREAT RIVER IS NOW OPEN FROM ITS SOURCE TO THE SEA | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "GOTHIC"
} | expert | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
bazeries-v2-0686 | GRHGCAOSNROHYMLPHXMLYNOHCSOWSFMSOPIYVYFLHEDYFYQAWOLYIAYQAVLHOSYTYFN | GRHGCAOSNROHYMLPHXMLYNOHCSOWSFMSOPIYVYFLHEDYFYQAWOLYIAYQAVLHOSYTYFN | I KNOW NOT WHAT COURSE OTHERS MAY TAKE BUT AS FOR ME GIVE ME LIBERTY OR GIVE ME DEATH | bazeries | bazeries | transposition | {
"type": "integer",
"value": 67
} | advanced | en | 67 | 67 | cipher_museum | 2.0 | public | null | null |
hill-v3-0479 | LPQVUQWVSIYZWKWFXJIYXNNNTAXYCZVRFVXJCYWPHBSIRNUUXDWVKMRCFRUUDYSIBUSVQWYBCMAIEL | LPQVUQWVSIYZWKWFXJIYXNNNTAXYCZVRFVXJCYWPHBSIRNUUXDWVKMRCFRUUDYSIBUSVQWYBCMAIEL | ON D DAY THE ALLIED FORCES LANDED ON FIVE NORMANDY BEACHES IN THE GREATEST SEABORNE INVASION | hill | hill | polygraphic | {
"a": 11,
"b": 3,
"c": 2,
"d": 5
} | advanced | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
cda-0013274 | OTOL QOTE DYYK CHEO LDAI NYQO TEDY YPCH OLOT AINR CHEO LCHO RORO RCHO LDAI INOX EDQO KALO KAIN OKAL OKAL DAIN YCHO LAII INYT EDYO KSHY QOKA LCHO LDAI INOK SHYO TAII NCHO RRAI INOK EDYC HEOL CHEO LRCH EOLS HALO RORO RORD ARAL YTED YSHE OLCH OLOK SHYQ OKEE DYQO KEED YSHA LKAI IINQ OTED YSHE EDYC HEDY OROR OTOL OKAI NSHE ... | OTOL QOTE DYYK CHEO LDAI NYQO TEDY YPCH OLOT AINR CHEO LCHO RORO RCHO LDAI INOX EDQO KALO KAIN OKAL OKAL DAIN YCHO LAII INYT EDYO KSHY QOKA LCHO LDAI INOK SHYO TAII NCHO RRAI INOK EDYC HEOL CHEO LRCH EOLS HALO RORO RORD ARAL YTED YSHE OLCH OLOK SHYQ OKEE DYQO KEED YSHA LKAI IINQ OTED YSHE EDYC HEDY OROR OTOL OKAI NSHE ... | TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH PERHAPS | voynich_render | voynich_render | null | {} | hard | en | 381 | 381 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
cda-0016903 | - .... . / .--. .-.. .- -.-- ..-. .- .. .-. / -.-. .. .--. .... . .-. / . -. -.-. .-. -.-- .--. - ... / .--. .- .. .-. ... / --- ..-. / .-.. . - - . .-. ... / ... .. -- ..- .-.. - .- -. . --- ..- ... .-.. -.-- | - .... . / .--. .-.. .- -.-- ..-. .- .. .-. / -.-. .. .--. .... . .-. / . -. -.-. .-. -.-- .--. - ... / .--. .- .. .-. ... / --- ..-. / .-.. . - - . .-. ... / ... .. -- ..- .-.. - .- -. . --- ..- ... .-.. -.-- | THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY | morse_code | morse_code | null | {} | medium | en | 53 | 53 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
rail-fence-v2-0115 | YENYCITMDBCNFJECMHITOIHNNIEAEDEIEAKADOTFASEBTNRNHWIFNDFRUNLRTELASHOPTDENEOEWIEAUSOISLEATDAIEEEAEYRETFAELVMETSCSYDTABVRCERNRASVENDTLIYHAEAAADEYYAFRMIDEEALTTWNLNOP | YENYCITMDBCNFJECMHITOIHNNIEAEDEIEAKADOTFASEBTNRNHWIFNDFRUNLRTELASHOPTDENEOEWIEAUSOISLEATDAIEEEAEYRETFAELVMETSCSYDTABVRCERNRASVENDTLIYHAEAAADEYYAFRMIDEEALTTWNLNOP | YESTERDAY DECEMBER SEVENTH NINETEEN FORTY ONE A DATE WHICH WILL LIVE IN INFAMY THE UNITED STATES OF AMERICA WAS SUDDENLY AND DELIBERATELY ATTACKED BY NAVAL AND AIR FORCES OF THE EMPIRE OF JAPAN | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 7
} | intermediate | en | 161 | 161 | cipher_museum | 2.0 | public | null | null |
kryptos-v2-0276 | KPFRYXBYPBKSMXWU | KPFRYXBYPBKSMXWU | THE WALLS HAVE EARS | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "VIRTUAL"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
bazeries-v2-0273 | UGFBMXVOSCY | UGFBMXVOSCY | KNOW THYSELF | bazeries | bazeries | transposition | {
"type": "integer",
"value": 37
} | advanced | en | 11 | 11 | cipher_museum | 2.0 | public | null | null |
kryptos-v2-0062 | DYMRDXJPGYAPQZDXJXJPGXFHWAFHYTZMUUWTSZEXWBWPMQDQZPKWSBLADLERRIMJGZFMVRVQGMMEE | DYMRDXJPGYAPQZDXJXJPGXFHWAFHYTZMUUWTSZEXWBWPMQDQZPKWSBLADLERRIMJGZFMVRVQGMMEE | THE LORD IS MY SHEPHERD I SHALL NOT WANT HE MAKETH ME LIE DOWN IN GREEN PASTURES BY STILL WATERS | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "SHADOW"
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
cda-0009084 | EYLS IHTS EREI XIRE ELAW DIES HESM DETT HOAE ETBD HIDY SEWV EHCE SSRS TSNR EMRA DAXT STNY OEBE TETI NWEI SODR TSGV CLLR EOFX THHN UNNA OESE AEBE PRAH URHM SEEH TEET ORNE TCMN RUDM OWPS EA | EYLS IHTS EREI XIRE ELAW DIES HESM DETT HOAE ETBD HIDY SEWV EHCE SSRS TSNR EMRA DAXT STNY OEBE TETI NWEI SODR TSGV CLLR EOFX THHN UNNA OESE AEBE PRAH URHM SEEH TEET ORNE TCMN RUDM OWPS EA | PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH EVERY SYSTEM NEEDS AN HONEST THREAT MODEL THE BEST LESSONS SHOW WHERE THE METHOD FAILS THE MESSAGE WAS HIDDEN BUT NOT SECURE | double_transposition | double_transposition | null | {
"key1": "SECURE",
"key2": "DRAGON"
} | hard | en | 150 | 150 | synthetic_educational | null | null | [] | |
alberti-disk-011 | XFYIFEJVKIXJM | XFYIFEJVKIXJM | CHANGE OF PLANS | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 3
} | expert | en | 13 | 13 | cipher_museum | 0.2 | public | null | null |
morse-code-v2-0051 | .-. .. -.-. .... -- --- -. -.. / .... .- ... / ..-. .- .-.. .-.. . -. / --- ..- .-. / ..-. --- .-. -.-. . ... / .... .- ...- . / . -. - . .-. . -.. / - .... . / -.-. .. - -.-- / .-. . ... .. ... - .- -. -.-. . / .. ... / . -. -.. . -.. / .. -. ..-. --- .-. -- / - .... . / .--. .-. . ... .. -.. . -. - | .-. .. -.-. .... -- --- -. -.. / .... .- ... / ..-. .- .-.. .-.. . -. / --- ..- .-. / ..-. --- .-. -.-. . ... / .... .- ...- . / . -. - . .-. . -.. / - .... . / -.-. .. - -.-- / .-. . ... .. ... - .- -. -.-. . / .. ... / . -. -.. . -.. / .. -. ..-. --- .-. -- / - .... . / .--. .-. . ... .. -.. . -. - | RICHMOND HAS FALLEN OUR FORCES HAVE ENTERED THE CITY RESISTANCE IS ENDED INFORM THE PRESIDENT | morse_code | morse_code | encoding | {
"type": "none",
"value": null
} | beginner | en | 209 | 301 | cipher_museum | 2.0 | public | null | null |
cda-0017915 | - .... . / - .-. .. - .... . -- .. ..- ... / -.-. .. .--. .... . .-. / .- -.. ...- .- -. -.-. . ... / - .... . / .- .-.. .--. .... .- -... . - / -... -.-- / --- -. . / .--. --- ... .. - .. --- -. / . .- -.-. .... / .-.. . - - . .-. / .- / ... - .-. --- -. --. / -.-. .-.. .- .. -- / -. . . -.. ... / ... - .-. --- -. --.... | - .... . / - .-. .. - .... . -- .. ..- ... / -.-. .. .--. .... . .-. / .- -.. ...- .- -. -.-. . ... / - .... . / .- .-.. .--. .... .- -... . - / -... -.-- / --- -. . / .--. --- ... .. - .. --- -. / . .- -.-. .... / .-.. . - - . .-. / .- / ... - .-. --- -. --. / -.-. .-.. .- .. -- / -. . . -.. ... / ... - .-. --- -. --.... | THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER A STRONG CLAIM NEEDS STRONG EVIDENCE MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS | morse_code | morse_code | null | {} | hard | en | 176 | 176 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
autokey-v3-0190 | FZCIVVKGNDMDVEGFASUIINZZMEWCETSMTRLBRWZXUGMLEUWVIMMREEWUCURDGGLGYRDENIKCXUWTTDE | FZCIVVKGNDMDVEGFASUIINZZMEWCETSMTRLBRWZXUGMLEUWVIMMREEWUCURDGGLGYRDENIKCXUWTTDE | ALL PERSONS BORN OR NATURALIZED IN THE UNITED STATES ARE CITIZENS SUBJECT TO EQUAL PROTECTION | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "FORTRESS"
} | intermediate | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
solitaire-v3-0160 | KJWIWYQFFCECFOOOGRQGJEEQEIDGAIWTWRGXFADZXBBBDPLPMPPYKFJYVMRQZDRMNGWUSDWEQJACKP | KJWIWYQFFCECFOOOGRQGJEEQEIDGAIWTWRGXFADZXBBBDPLPMPPYKFJYVMRQZDRMNGWUSDWEQJACKP | GENIUS IS ONE PERCENT INSPIRATION AND NINETY NINE PERCENT PERSPIRATION THOMAS EDISON NOTED | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "SCHNEIER"
} | expert | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-v2-0311 | HXQKWDTDXYGHZDRKIAHYERDXTMBYSCHTKDVIAEIQIMPPUBWQUXQFKVUVPZUIODIZZJOMUKKDY | HXQKWDTDXYGHZDRKIAHYERDXTMBYSCHTKDVIAEIQIMPPUBWQUXQFKVUVPZUIODIZZJOMUKKDY | ALEA IACTA EST ET CAESAR RUBICONE TRANSGRESSO BELLUM CIVILE INCIPIT PER TOTAM ROMANAM | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "1,3,5,2,4,6"
} | expert | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
vic-v2-0312 | 8775924319194415538718758430787839278338882867584386751809178781159180847478053491743541787830391787818014800391 | 8775924319194415538718758430787839278338882867584386751809178781159180847478053491743541787830391787818014800391 | NATURE IS WRITTEN IN THE LANGUAGE OF MATHEMATICS AND ITS CHARACTERS ARE TRIANGLES AND CIRCLES | vic | vic | substitution | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 112 | 112 | cipher_museum | 2.0 | public | null | null |
wallis-cipher-v3-0139 | 90 15 44 63 91 90 18 88 80 30 76 91 90 61 47 77 30 53 91 | 90 15 44 63 91 90 18 88 80 30 76 91 90 61 47 77 30 53 91 | THE APPLE FALLS | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "ENGLAND"
} | expert | en | 38 | 56 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v2-0094 | DJWEEMLXQMJHNNSPPIPURUVBHBHOSOVIAYHIXTXXJASNOBPSZCYLFMPJDVPLFSZGZZMKIQPGSCWWZHPRUDRI | DJWEEMLXQMJHNNSPPIPURUVBHBHOSOVIAYHIXTXXJASNOBPSZCYLFMPJDVPLFSZGZZMKIQPGSCWWZHPRUDRI | CODED TRANSMISSION INDICATES ENEMY FORCES ASSEMBLING ALONG THE BORDER WITH HEAVY ARTILLERY UNITS | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 4
} | expert | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
two-square-v2-0098 | HASEQFGECKHQHBRALLCUINHARWELRYCOOLSSULTSZUQFHUUYTOFARUUYEBRDLUPMEGZURTMMCOGESY | HASEQFGECKHQHBRALLCUINHARWELRYCOOLSSULTSZUQFHUUYTOFARUUYEBRDLUPMEGZURTMMCOGESY | DEUTSCHLAND UBER ALLES IN DER WELT WENN ES STETS ZU SCHUTZ UND TRUTZE BRÜDERLICH ZUSAMMENHÄLT | two_square | two_square | polygraphic | {
"key1": "PALACE",
"key2": "BATTLE"
} | advanced | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
cda-0003209 | EELBVIDBESEFORONCEFIDCENEXXXCENECOMSEBORVA | EELBVIDBESEFORONCEFIDCENEXXXCENECOMSEBORVA | OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE | double_transposition | double_transposition | null | {
"key1": "LIBERTY",
"key2": "PALACE"
} | medium | en | 42 | 42 | synthetic_educational | null | null | [
"key_length_search",
"anagram_recovery"
] | Double columnar transposition: apply columnar twice for stronger security. |
cda-0015239 | 18 15 21 20 5 3 9 16 8 5 18 19 18 5 1 4 1 7 18 9 4 9 14 1 16 18 5 19 3 18 9 2 5 4 7 5 15 13 5 20 18 9 3 16 1 20 20 5 18 14 3 18 25 16 20 15 7 18 1 16 8 25 18 5 23 1 18 4 19 16 1 20 9 5 14 3 5 1 14 4 3 1 18 5 6 21 12 20 8 9 14 11 9 14 7 20 8 5 12 9 2 18 1 18 25 16 18 5 19 5 18 22 5 19 11 14 15 23 12 5 4 7 5 6 15 18 20 8... | 18 15 21 20 5 3 9 16 8 5 18 19 18 5 1 4 1 7 18 9 4 9 14 1 16 18 5 19 3 18 9 2 5 4 7 5 15 13 5 20 18 9 3 16 1 20 20 5 18 14 3 18 25 16 20 15 7 18 1 16 8 25 18 5 23 1 18 4 19 16 1 20 9 5 14 3 5 1 14 4 3 1 18 5 6 21 12 20 8 9 14 11 9 14 7 20 8 5 12 9 2 18 1 18 25 16 18 5 19 5 18 22 5 19 11 14 15 23 12 5 4 7 5 6 15 18 20 8... | ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 138 | 138 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
geheimschreiber-v3-0367 | BKSPWNXUOPZFMVVODBTJXNPYMSKQOVQFEAFMXCXIMZWHPAWDIVSHVKRTDFUQJQHTALUTXIZRWZRDWM | BKSPWNXUOPZFMVVODBTJXNPYMSKQOVQFEAFMXCXIMZWHPAWDIVSHVKRTDFUQJQHTALUTXIZRWZRDWM | SCIENCE WITHOUT RELIGION IS LAME AND RELIGION WITHOUT SCIENCE IS BLIND SAID ALBERT EINSTEIN | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "TEUTON"
} | expert | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
m94-v3-0087 | RZNGTFMFZJNQSLVBSCHUTXNVVZVXCLTNYPGRCICIHWMXECWJPGLUQOTPCFZCYSDLMPAHSRTWTPKUFJQQ | RZNGTFMFZJNQSLVBSCHUTXNVVZVXCLTNYPGRCICIHWMXECWJPGLUQOTPCFZCYSDLMPAHSRTWTPKUFJQQ | THE ENIGMA MACHINE HAD AN ASTRONOMICAL NUMBER OF POSSIBLE SETTINGS MAKING IT SEEM UNBREAKABLE | m94 | m94 | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
vigenere-v2-1106 | QRPMESDYVKYLRMSKPISSGUCIZHFEZEEZHBUWDIMOZQZIIXSZGXAYWWSBTLVXRIEQVWLRAYJJPMEFQX | QRPMESDYVKYLRMSKPISSGUCIZHFEZEEZHBUWDIMOZQZIIXSZGXAYWWSBTLVXRIEQVWLRAYJJPMEFQX | LA LIBERTE GUIDANT LE PEUPLE VERS UN AVENIR MEILLEUR ET PLUS JUSTE POUR TOUS LES HOMMES LIBRES | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
cda-0018242 | GKPNK MIYFI VIKBB ZKDXJ WYHKG JIADI OESII ETUIF NORAR RRGUA FRAYJ WWOLN ZGAEX VNXMM HXOCJ FTGKC QXZFY IGCMK WKGAK LWHZJ SDNED EFJSM ZIUCF GIJIG CPXMG ZMEAL LWLTC LASEE GXCRS ASRPQ UCHUZ CSXOJ GNYKM AIRD | GKPNK MIYFI VIKBB ZKDXJ WYHKG JIADI OESII ETUIF NORAR RRGUA FRAYJ WWOLN ZGAEX VNXMM HXOCJ FTGKC QXZFY IGCMK WKGAK LWHZJ SDNED EFJSM ZIUCF GIJIG CPXMG ZMEAL LWLTC LASEE GXCRS ASRPQ UCHUZ CSXOJ GNYKM AIRD | GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION THE ARCHITECTURE SHOULD MAKE MISUSE HARDER HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS | running_key | running_key | null | {} | hard | en | 169 | 169 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
caesar-v3-0948 | STJH KJAI | STJH KJAI | DEUS VULT | caesar | caesar | substitution | {
"type": "shift",
"value": 15
} | beginner | en | 8 | 9 | cipher_museum | 2.0 | public | null | null |
wheatstone-089 | JMPGHMWLCJJACTES | JMPGHMWLCJJACTES | LOCK DOWN ALL GATES | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
cda-0018263 | 20.1.5 13.1.10 3.6.9 18.3.3 13.5.4 12.1.8 3.5.1 6.5.7 4.6.7 11.6.4 16.5.9 7.2.7 13.4.4 13.3.9 13.3.2 16.3.9 18.2.8 14.6.6 11.3.1 20.5.8 1.3.9 20.4.8 4.2.6 1.5.10 17.4.9 10.4.3 5.3.2 2.3.1 20.1.2 15.1.3 19.5.8 4.4.8 16.3.2 12.1.9 10.1.1 6.6.1 7.6.4 3.4.9 12.5.6 11.4.6 15.2.10 16.2.1 4.2.1 20.2.1 14.4.5 6.3.7 11.1.6 10.4... | 20.1.5 13.1.10 3.6.9 18.3.3 13.5.4 12.1.8 3.5.1 6.5.7 4.6.7 11.6.4 16.5.9 7.2.7 13.4.4 13.3.9 13.3.2 16.3.9 18.2.8 14.6.6 11.3.1 20.5.8 1.3.9 20.4.8 4.2.6 1.5.10 17.4.9 10.4.3 5.3.2 2.3.1 20.1.2 15.1.3 19.5.8 4.4.8 16.3.2 12.1.9 10.1.1 6.6.1 7.6.4 3.4.9 12.5.6 11.4.6 15.2.10 16.2.1 4.2.1 20.2.1 14.4.5 6.3.7 11.1.6 10.4... | THE MESSAGE WAS HIDDEN BUT NOT SECURE OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE PERHAPS | arnold_andre | arnold_andre | null | {} | medium | en | 77 | 77 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
polybius-la-004 | 15 44 44 45 12 42 45 44 15 | 15 44 44 45 12 42 45 44 15 | ET TU BRUTE | polybius | polybius | substitution | {
"type": "none",
"value": null
} | beginner | la | 18 | 26 | cipher_museum | 0.2 | public | null | null |
double-transposition-v2-0073 | ETOPFAGTTERSHESOENCEEDTTDGITDAERESNNRGETYTFIAERSVTTIMNEGGTIEAHTAYDOIUESAE | ETOPFAGTTERSHESOENCEEDTTDGITDAERESNNRGETYTFIAERSVTTIMNEGGTIEAHTAYDOIUESAE | THE SECRET OF GETTING AHEAD IS GETTING STARTED ONE STEP AT A TIME GETS YOU VERY FAR INDEED | double_transposition | double_transposition | transposition | {
"key1": "PALACE",
"key2": "BATTLE"
} | advanced | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
double-transposition-v3-0234 | STIERERUHERRUBEDEA | STIERERUHERRUBEDEA | TREASURE BURIED HERE | double_transposition | double_transposition | transposition | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
enigma-v2-0231 | MQBUJVDWHMVOPKIPMVSSFLDVWRFDLVGAISYBWMKLAFKLTRJDDQJMZLCKAASCZLBNCUACESUYLBQLGKFVSWIS | MQBUJVDWHMVOPKIPMVSSFLDVWRFDLVGAISYBWMKLAFKLTRJDDQJMZLCKAASCZLBNCUACESUYLBQLGKFVSWIS | THE REGIMENT WILL HOLD ITS POSITION UNTIL REINFORCEMENTS ARRIVE FROM THE EASTERN COMMAND POST HERE | enigma | enigma | machine | {
"type": "rotor_start",
"value": "DEF"
} | expert | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
cda-0017363 | 859 823 812 999 815 844 862 852 999 856 850 861 801 853 813 999 808 826 845 823 814 851 999 860 854 812 855 999 859 867 842 999 830 812 874 867 843 851 810 999 845 843 835 872 804 825 861 855 999 855 848 861 802 853 813 854 999 | 859 823 812 999 815 844 862 852 999 856 850 861 801 853 813 999 808 826 845 823 814 851 999 860 854 812 855 999 859 867 842 999 830 812 874 867 843 851 810 999 845 843 835 872 804 825 861 855 999 855 848 861 802 853 813 854 999 | THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES | culper_ring | culper_ring | null | {} | medium | en | 48 | 48 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
kl7-v3-0165 | XCYJMPOGMIQWDALIGMOJLRAZXLPYVGLISLMFOFKDTGWHGISXWGFSCORHNUFZJTNVIXLKMNNZJQWW | XCYJMPOGMIQWDALIGMOJLRAZXLPYVGLISLMFOFKDTGWHGISXWGFSCORHNUFZJTNVIXLKMNNZJQWW | AT THE BATTLE OF MIDWAY AMERICAN DIVE BOMBERS DESTROYED FOUR JAPANESE CARRIERS IN MINUTES | kl7 | kl7 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
cda-0019668 | BAABA AABBB AABAA ABAAB AAAAA BAAAB ABAAA BAAAB ABAAB ABAAA AABAA BABAB AAAAA ABABB ABAAA ABBAA AAAAA BAABA ABAAA ABBAB ABBAA AABAB ABAAA ABBAA AAABB BAAAB BAAAA AABAA ABBBA AABAA AAAAA BAABA AABAA AAABB BAABA BAAAA ABAAA AABBA BAAAA AAAAA ABABB BAAAB ABAAA ABBAA AAABA ABAAA ABBBA AABBB AABAA BAAAA BAABA AABAA BABAB BA... | BAABA AABBB AABAA ABAAB AAAAA BAAAB ABAAA BAAAB ABAAB ABAAA AABAA BABAB AAAAA ABABB ABAAA ABBAA AAAAA BAABA ABAAA ABBAB ABBAA AABAB ABAAA ABBAA AAABB BAAAB BAAAA AABAA ABBBA AABAA AAAAA BAABA AABAA AAABB BAABA BAAAA ABAAA AABBA BAAAA AAAAA ABABB BAAAB ABAAA ABBAA AAABA ABAAA ABBBA AABBB AABAA BAAAA BAABA AABAA BABAB BA... | THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS | 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. |
m209-v3-0220 | CYJMILSI | CYJMILSI | DEUS VULT | m209 | m209 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 8 | 8 | cipher_museum | 2.0 | public | null | null |
diana-v2-0580 | FGTKQGTNCNQBKICYQBZWEZEELZLVFGTGOAESYMEQLMJRWLYUVMKANPXJBAMZMAAYJYXBAATRRBQAQ | FGTKQGTNCNQBKICYQBZWEZEELZLVFGTGOAESYMEQLMJRWLYUVMKANPXJBAMZMAAYJYXBAATRRBQAQ | ALL UNITS PROCEED TO DESIGNATED RALLY POINTS AND AWAIT FURTHER ORDERS FROM HIGH COMMAND NOW | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
chinese-telegraph-v3-0206 | 8603 7654 7467 7974 7194 8038 7654 7194 8603 8603 7194 8038 8206 8437 8100 7783 7467 7338 8603 7256 8437 8100 8685 7590 7654 8603 8603 8100 7590 7467 8603 7654 7467 8437 8603 7654 7467 7590 8437 7467 7194 8603 7467 8528 8603 8528 7338 7720 7467 8038 8603 7720 7529 7720 7338 7974 7720 8038 7401 8528 8100 7529 8603 7654 ... | 8603 7654 7467 7974 7194 8038 7654 7194 8603 8603 7194 8038 8206 8437 8100 7783 7467 7338 8603 7256 8437 8100 8685 7590 7654 8603 8603 8100 7590 7467 8603 7654 7467 8437 8603 7654 7467 7590 8437 7467 7194 8603 7467 8528 8603 8528 7338 7720 7467 8038 8603 7720 7529 7720 7338 7974 7720 8038 7401 8528 8100 7529 8603 7654 ... | THE MANHATTAN PROJECT BROUGHT TOGETHER THE GREATEST SCIENTIFIC MINDS OF THE TWENTIETH CENTURY IN A RACE TO BUILD THE ATOMIC BOMB BEFORE NAZI GERMANY COULD DO SO THE EFFORT CHANGED THE WORLD FOREVER | chinese_telegraph | chinese_telegraph | codebook | {
"type": "additive",
"value": "27182"
} | expert | en | 660 | 824 | cipher_museum | 2.0 | public | null | null |
great-cipher-v2-0212 | 173 177 146 179 131 101 146 147 167 109 117 149 129 119 114 160 126 138 150 110 119 132 137 135 107 112 156 140 166 181 110 136 182 129 177 173 177 146 177 179 175 171 172 170 173 124 143 120 168 100 107 176 177 169 168 138 155 136 146 177 175 | 173 177 146 179 131 101 146 147 167 109 117 149 129 119 114 160 126 138 150 110 119 132 137 135 107 112 156 140 166 181 110 136 182 129 177 173 177 146 177 179 175 171 172 170 173 124 143 120 168 100 107 176 177 169 168 138 155 136 146 177 175 | THE KASISKI TEST FINDS REPEATED SEQUENCES TO DETERMINE THE KEY LENGTH OF A VIGENERE CIPHER KEY | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "ROSSIGNOL"
} | expert | en | 183 | 243 | cipher_museum | 2.0 | public | null | null |
cda-0021089 | ..-. .-. . --.- ..- . -. -.-. -.-- / .- -. .- .-.. -.-- ... .. ... / -.-. .- -. / .-. . ...- . .- .-.. / .-- . .- -.- / -.-. .. .--. .... . .-. ... | ..-. .-. . --.- ..- . -. -.-. -.-- / .- -. .- .-.. -.-- ... .. ... / -.-. .- -. / .-. . ...- . .- .-.. / .-- . .- -.- / -.-. .. .--. .... . .-. ... | FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | morse_code | morse_code | null | {} | medium | en | 37 | 37 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
beaufort-v2-0579 | CBYCKLQJEPAWKYKXCQTRLTECAJJHDPRLIKFDONEAAFRFBVOAFNXRPXTKIPVPKRGCELGJGYIYJFLRA | CBYCKLQJEPAWKYKXCQTRLTECAJJHDPRLIKFDONEAAFRFBVOAFNXRPXTKIPVPKRGCELGJGYIYJFLRA | THE REGIMENT SHALL ADVANCE AT FIRST LIGHT SUPPORTED BY ARTILLERY ON THE EASTERN FLANK TODAY | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "VICTORY"
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
affine-v2-1658 | NWQAHXQTPU KPTUQ XYHUDNS | NWQAHXQTPU KPTUQ XYHUDNS | EXTRACTION POINT CHANGED | affine | affine | substitution | {
"a": 21,
"b": 7
} | beginner | en | 22 | 24 | cipher_museum | 2.0 | public | null | null |
cda-0016996 | -... .-. ..- - . / ..-. --- .-. -.-. . / .-- --- .-. -.- ... / --- -. .-.. -.-- / .-- .... . -. / - .... . / -.- . -.-- / ... .--. .- -.-. . / .. ... / ... -- .- .-.. .-.. / .- / ... -.-. -.-- - .- .-.. . / .. ... / .- / .-. --- -.. / ..- ... . -.. / -... -.-- / ... .--. .- .-. - .- -. ... / - --- / . -. -.-. .-. -.-- ... | -... .-. ..- - . / ..-. --- .-. -.-. . / .-- --- .-. -.- ... / --- -. .-.. -.-- / .-- .... . -. / - .... . / -.- . -.-- / ... .--. .- -.-. . / .. ... / ... -- .- .-.. .-.. / .- / ... -.-. -.-- - .- .-.. . / .. ... / .- / .-. --- -.. / ..- ... . -.. / -... -.-- / ... .--. .- .-. - .- -. ... / - --- / . -. -.-. .-. -.-- ... | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES | morse_code | morse_code | null | {} | hard | en | 86 | 86 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
hill-v3-0229 | YHVNNESRRTJVBKYGJRNNCSWUGV | YHVNNESRRTJVBKYGJRNNCSWUGV | THE PRINTING PRESS CHANGES ALL | hill | hill | polygraphic | {
"a": 7,
"b": 3,
"c": 4,
"d": 5
} | advanced | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
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