id stringlengths 7 52 | text stringlengths 6 2.11k | ciphertext stringlengths 6 2.11k | plaintext stringlengths 6 282 | label stringclasses 81
values | cipher stringclasses 81
values | cipher_family stringclasses 13
values | key unknown | difficulty stringclasses 7
values | language stringclasses 8
values | text_length int64 6 1.09k | length int64 6 1.28k | source stringclasses 2
values | dataset_version stringclasses 2
values | split stringclasses 1
value | attack_methods listlengths 0 3 ⌀ | educational_note stringclasses 32
values |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
cda-0010135 | CNGGREA JBEQF URYC OERNX ZBABNYCUNORGVP FHOFGVGHGVBA GUR ENVY SRAPR PVCURE JEVGRF GRKG VA N MVTMNT CNGGREA PELCGBTENCUL ERJNEQF CNGVRAPR NAQ PNERSHY GUVAXVAT | CNGGREA JBEQF URYC OERNX ZBABNYCUNORGVP FHOFGVGHGVBA GUR ENVY SRAPR PVCURE JEVGRF GRKG VA N MVTMNT CNGGREA PELCGBTENCUL ERJNEQF CNGVRAPR NAQ PNERSHY GUVAXVAT | PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 136 | 136 | synthetic_educational | null | null | [] | |
cda-0014787 | 10.1.10 4.46.13 6.34.4 18.13.10 13.27.8 13.6.15 18.44.8 14.3.9 10.20.8 5.14.7 19.24.11 4.24.14 13.9.2 13.23.10 20.38.3 18.12.1 18.5.9 9.3.14 8.46.11 16.2.9 15.13.15 2.27.5 8.44.7 8.3.7 18.9.10 13.28.11 6.20.7 2.36.12 7.25.11 19.17.14 16.18.5 19.20.9 1.46.11 14.8.2 15.16.12 1.48.8 17.37.8 20.29.4 5.16.7 12.25.3 20.26.11... | 10.1.10 4.46.13 6.34.4 18.13.10 13.27.8 13.6.15 18.44.8 14.3.9 10.20.8 5.14.7 19.24.11 4.24.14 13.9.2 13.23.10 20.38.3 18.12.1 18.5.9 9.3.14 8.46.11 16.2.9 15.13.15 2.27.5 8.44.7 8.3.7 18.9.10 13.28.11 6.20.7 2.36.12 7.25.11 19.17.14 16.18.5 19.20.9 1.46.11 14.8.2 15.16.12 1.48.8 17.37.8 20.29.4 5.16.7 12.25.3 20.26.11... | HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER | book_cipher | book_cipher | null | {} | hard | en | 184 | 184 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
trifid-040 | SHFRWFIECEONPNDDFAYJISFZNMCAF+DIQWWAWD+MZXFUJHFX | SHFRWFIECEONPNDDFAYJISFZNMCAF+DIQWWAWD+MZXFUJHFX | WE SHALL FIGHT ON THE BEACHES AND WE SHALL NEVER SURRENDER | trifid | trifid | fractionation | {
"type": "keyword",
"value": "FELIX"
} | advanced | en | 48 | 48 | cipher_museum | 0.2 | public | null | null |
typex-v2-0037 | GMAZFVQMHBCVJKVGCPFIMUSTB | GMAZFVQMHBCVJKVGCPFIMUSTB | SICUT PATRIBUS SIT DEUS NOBIS | typex | typex | machine | {
"type": "keyword",
"value": "LONDON"
} | expert | en | 25 | 25 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v2-0141 | SDBKTXSHDQLBPRDQALK | SDBKTXSHDQLBPRDQALK | ABORT AND WITHDRAW | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
cda-0010392 | O FGEBAU QYNWZ ASSRF FGEABT RIVRSBQR GUS WBRRK BT QCVAQVRSBQR WF O GGNSHY QZIN CSRE DSIVSJ ONR ERCEBRIQVPVYWHL ZOGGSF VA ERFSOEPV QWUFOCV NAR HEVUEOBV SESDHSBQVSF SJDBFS FWADYR QVCVSEF | O FGEBAU QYNWZ ASSRF FGEABT RIVRSBQR GUS WBRRK BT QCVAQVRSBQR WF O GGNSHY QZIN CSRE DSIVSJ ONR ERCEBRIQVPVYWHL ZOGGSF VA ERFSOEPV QWUFOCV NAR HEVUEOBV SESDHSBQVSF SJDBFS FWADYR QVCVSEF | A STRONG CLAIM NEEDS STRONG EVIDENCE THE INDEX OF COINCIDENCE IS A USEFUL CLUE PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS | porta | porta | null | {
"key": "LIBRARY"
} | hard | en | 157 | 157 | synthetic_educational | null | null | [] | |
fialka-v3-0411 | ZXIEYASVIQMPUGJLIJCQPYNSOYTEYAORMNFZRULWMIHSHDVACWWMSDWLHKOZZYETBTLSODBQFZCXFLLMERKNOKZFUMIOGEAGQBPZDWTBIGVTNDMVXHUVBYHMUTQRCUBTIEENQFDYIQEUJMRJDYULZCHXVZEURNHGRSSSGFQART | ZXIEYASVIQMPUGJLIJCQPYNSOYTEYAORMNFZRULWMIHSHDVACWWMSDWLHKOZZYETBTLSODBQFZCXFLLMERKNOKZFUMIOGEAGQBPZDWTBIGVTNDMVXHUVBYHMUTQRCUBTIEENQFDYIQEUJMRJDYULZCHXVZEURNHGRSSSGFQART | SOCRATES BELIEVED THAT THE UNEXAMINED LIFE IS NOT WORTH LIVING AND THAT WISDOM BEGINS WITH THE ADMISSION OF ONES OWN IGNORANCE THIS APPROACH TO KNOWLEDGE HAS GUIDED WESTERN PHILOSOPHY FOR TWO MILLENNIA | fialka | fialka | machine | {
"type": "seed",
"value": "SPUTNIK"
} | expert | en | 170 | 170 | cipher_museum | 2.0 | public | null | null |
caesar-v3-1452 | FJJXKRBI HXKQ MOLMLPBA QEXQ TB PELRIA XZQ LKIV XZZLOAFKD QL QEXQ JXUFJ YV TEFZE TB ZXK XQ QEB PXJB QFJB TFII QEXQ FQ PELRIA YBZLJB X RKFSBOPXI IXT QEFP ZXQBDLOFZXI FJMBOXQFSB ABCFKBP JLOXI ARQV | FJJXKRBI HXKQ MOLMLPBA QEXQ TB PELRIA XZQ LKIV XZZLOAFKD QL QEXQ JXUFJ YV TEFZE TB ZXK XQ QEB PXJB QFJB TFII QEXQ FQ PELRIA YBZLJB X RKFSBOPXI IXT QEFP ZXQBDLOFZXI FJMBOXQFSB ABCFKBP JLOXI ARQV | 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 | caesar | caesar | substitution | {
"type": "shift",
"value": 23
} | beginner | en | 160 | 193 | cipher_museum | 2.0 | public | null | null |
cda-0008813 | AAQ NMCKLOQLKKAP PNZJTO HHKJ RWZZPQ GDNOPQ FZSGRISNNCAYLF SFOXNCP AVZ SXIOMYSA RISNNCAY BAMIKM MCDETZRPV HHNSGZLP SNQ NNYDUC HARJ FMYWAAB | AAQ NMCKLOQLKKAP PNZJTO HHKJ RWZZPQ GDNOPQ FZSGRISNNCAYLF SFOXNCP AVZ SXIOMYSA RISNNCAY BAMIKM MCDETZRPV HHNSGZLP SNQ NNYDUC HARJ FMYWAAB | THE ARCHITECTURE SHOULD MAKE MISUSE HARDER POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | beaufort | beaufort | null | {
"key": "THUNDER"
} | hard | en | 120 | 120 | synthetic_educational | null | null | [] | |
cda-0014979 | ASCYT ALEIZ ARODU SEDBY SPART ANSTO ENCRY PTMEX SAGES THERA ILFEZ CECIP HERWR ITESX EXTIX AZIGX AGPAT TERNZ LASSX CALCI PHERS TEACX WHYMO DERNX ECURI TYMAX TERSX ONOTC ONFUS EOBFZ SCATX ONWIT HENCX YPTIO NADZZ | ASCYT ALEIZ ARODU SEDBY SPART ANSTO ENCRY PTMEX SAGES THERA ILFEZ CECIP HERWR ITESX EXTIX AZIGX AGPAT TERNZ LASSX CALCI PHERS TEACX WHYMO DERNX ECURI TYMAX TERSX ONOTC ONFUS EOBFZ SCATX ONWIT HENCX YPTIO NADZZ | A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION | commercial_code | commercial_code | null | {} | hard | en | 175 | 175 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
morse-code-v3-0039 | - .... . / . -..- .--. . .-. .. -- . -. - / -.-. --- -. ..-. .. .-. -- ... | - .... . / . -..- .--. . .-. .. -- . -. - / -.-. --- -. ..-. .. .-. -- ... | THE EXPERIMENT CONFIRMS | morse_code | morse_code | encoding | {
"type": "none",
"value": null
} | beginner | en | 52 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0020514 | 82 11 60 34 72 15 57 21 39 82 59 40 70 48 23 64 43 11 91 3 76 99 24 33 79 59 62 23 81 35 33 62 49 24 3 27 63 17 27 81 62 60 34 59 24 3 2 63 17 46 58 48 36 14 33 70 87 49 23 11 33 53 63 72 50 22 43 59 4 63 39 33 21 66 63 88 23 34 50 | 82 11 60 34 72 15 57 21 39 82 59 40 70 48 23 64 43 11 91 3 76 99 24 33 79 59 62 23 81 35 33 62 49 24 3 27 63 17 27 81 62 60 34 59 24 3 2 63 17 46 58 48 36 14 33 70 87 49 23 11 33 53 63 72 50 22 43 59 4 63 39 33 21 66 63 88 23 34 50 | A STRONG CLAIM NEEDS STRONG EVIDENCE DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS | homophonic | homophonic | null | {} | medium | en | 79 | 79 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
venona-pad-reuse-v2-0257 | HRREI7UFSREOMIX | HRREI7UFSREOMIX | CAVALRY ADVANCES | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "FREEDOM"
} | expert | en | 15 | 15 | cipher_museum | 2.0 | public | null | null |
cda-0003738 | IALUT PEHAR SIHTB TIMCN FMDSP NATNI BLERP TAPEI SRDIO RNUIR AEAUP TENIO HPYAO RSELT EETUE EEAUU LTGPC DRWFC CSTSB PEESR TIGLA ENRAI GNOSU EAREA YEITY EGEEX MOSTM AHDUE HCOOE TSORL HWSHS SEDCA PLANO SSRNE LRURD DRTXR HS | IALUT PEHAR SIHTB TIMCN FMDSP NATNI BLERP TAPEI SRDIO RNUIR AEAUP TENIO HPYAO RSELT EETUE EEAUU LTGPC DRWFC CSTSB PEESR TIGLA ENRAI GNOSU EAREA YEITY EGEEX MOSTM AHDUE HCOOE TSORL HWSHS SEDCA PLANO SSRNE LRURD DRTXR HS | ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY THE MESSAGE WAS HIDDEN BUT NOT SECURE | double_transposition | double_transposition | null | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | hard | en | 182 | 182 | synthetic_educational | null | null | [
"key_length_search",
"anagram_recovery"
] | Double columnar transposition: apply columnar twice for stronger security. |
wheatstone-v3-0197 | WAEMIDTEASATRUTESTMOASAIBAVFDAKTTELTLIIJAKLRANRALTADAQULITELTTEAYLRAAKDMWADOYTEAFRNRALTMRWFTENARTLFKUKLIFAKLOIARFCETSTELTLJMKCTEASALRAIFBAIFOARTYLKDTEAPURSUFTMBELPPFKASS | WAEMIDTEASATRUTESTMOASAIBAVFDAKTTELTLIIJAKLRANRALTADAQULITELTTEAYLRAAKDMWADOYTEAFRNRALTMRWFTENARTLFKUKLIFAKLOIARFCETSTELTLJMKCTEASALRAIFBAIFOARTYLKDTEAPURSUFTMBELPPFKASS | 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 | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "LONDON"
} | advanced | en | 169 | 169 | cipher_museum | 2.0 | public | null | null |
rot13-v3-0061 | NG GUR ONGGYR BS ZVQJNL NZREVPNA QVIR OBZOREF QRFGEBLRQ SBHE WNCNARFR PNEEVREF VA ZVAHGRF | NG GUR ONGGYR BS ZVQJNL NZREVPNA QVIR OBZOREF QRFGEBLRQ SBHE WNCNARFR PNEEVREF VA ZVAHGRF | AT THE BATTLE OF MIDWAY AMERICAN DIVE BOMBERS DESTROYED FOUR JAPANESE CARRIERS IN MINUTES | rot13 | rot13 | substitution | {
"type": "none",
"value": null
} | beginner | en | 76 | 89 | cipher_museum | 2.0 | public | null | null |
chaocipher-v2-0513 | GOWLLCKZAAZQFTJL | GOWLLCKZAAZQFTJL | THE HARBOR IS CLEAR | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v3-0599 | DLKZSAWOYVKZBNOPXKLDFUZNBWTBEIVDRAHCFIZHABTRWTGNTYATZGNQFKIWWHWXOPJRTWWQJJAQSVWAILPA | DLKZSAWOYVKZBNOPXKLDFUZNBWTBEIVDRAHCFIZHABTRWTGNTYATZGNQFKIWWHWXOPJRTWWQJJAQSVWAILPA | SIGNALS INTELLIGENCE OR SIGINT INVOLVES INTERCEPTION AND ANALYSIS OF ELECTRONIC COMMUNICATIONS | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 14
} | expert | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
sigaba-v2-0108 | UCIQNEUAPRWDBXZDNKECHELCWVMVDCNNHAPOIHIAAHVZPDESGSNRMTOKKXGZCHRJNBDYXGQUTKACSPQUPZCCWTPMNLZYINWKEABPRZWIHTNTNIEDWIJRRIUWHGHTFKKOJXKXGFGGNJCKWWW | UCIQNEUAPRWDBXZDNKECHELCWVMVDCNNHAPOIHIAAHVZPDESGSNRMTOKKXGZCHRJNBDYXGQUTKACSPQUPZCCWTPMNLZYINWKEABPRZWIHTNTNIEDWIJRRIUWHGHTFKKOJXKXGFGGNJCKWWW | WITH MALICE TOWARD NONE WITH CHARITY FOR ALL WITH FIRMNESS IN THE RIGHT AS GOD GIVES US TO SEE THE RIGHT LET US STRIVE ON TO FINISH THE WORK WE ARE IN TO BIND UP THE NATIONS WOUNDS | sigaba | sigaba | machine | {
"type": "seed",
"value": "ECMMARK"
} | expert | en | 143 | 143 | cipher_museum | 2.0 | public | null | null |
cda-0010843 | TIGGI YKJBR FPEGI SYVKI UOPBP MSCGI SWKTI TSYSP ZPYDK | TIGGI YKJBR FPEGI SYVKI UOPBP MSCGI SWKTI TSYSP ZPYDK | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS | trithemius | trithemius | null | {} | medium | en | 45 | 45 | synthetic_educational | null | null | [] | |
kryptos-v2-0405 | QFFGSBREPTIVM | QFFGSBREPTIVM | HONOR ABOVE ALL | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "SANBORN"
} | advanced | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
vernam-v2-0102 | GFPHVFRVZMOCEAIBRVJHHZWIJBONOXRNIHBRYYEFVPBCTXYIYOWOTFFXWNTNBQOLBCFDLVVVCKDBPCITM | GFPHVFRVZMOCEAIBRVJHHZWIJBONOXRNIHBRYYEFVPBCTXYIYOWOTFFXWNTNBQOLBCFDLVVVCKDBPCITM | GENERAL ORDERS NUMBER ONE ALL COMMUNICATIONS SHALL BE ENCRYPTED USING THE APPROVED CIPHER DISK | vernam | vernam | stream | {
"type": "pad",
"value": "ABCDEFGH (repeating)"
} | expert | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
argenti-v3-0204 | 41 16 69 28 44 59 83 26 15 63 25 37 13 67 17 33 23 75 20 32 66 82 28 37 81 83 22 18 17 68 77 12 63 84 66 23 44 26 64 28 34 84 17 56 32 72 25 71 37 23 66 82 63 37 16 28 11 41 69 60 36 38 18 72 34 82 81 20 84 63 44 28 66 37 18 83 75 63 16 20 66 41 69 83 38 72 77 26 37 82 28 66 41 37 22 18 17 59 77 12 88 20 34 23 16 83 63... | 41 16 69 28 44 59 83 26 15 63 25 37 13 67 17 33 23 75 20 32 66 82 28 37 81 83 22 18 17 68 77 12 63 84 66 23 44 26 64 28 34 84 17 56 32 72 25 71 37 23 66 82 63 37 16 28 11 41 69 60 36 38 18 72 34 82 81 20 84 63 44 28 66 37 18 83 75 63 16 20 66 41 69 83 38 72 77 26 37 82 28 66 41 37 22 18 17 59 77 12 88 20 34 23 16 83 63... | 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 | argenti | argenti | nomenclator | {
"type": "seed",
"value": "PAPAL"
} | expert | en | 320 | 479 | cipher_museum | 2.0 | public | null | null |
cda-0016349 | otaiin oxed shal qokedy sheol daiin rcheol oror okain qokedy otaiin raiin cheol raiin qotedy chor chedy raiin daral rcheol ypchol okedy chedy cheol okshy raiin | otaiin oxed shal qokedy sheol daiin rcheol oror okain qokedy otaiin raiin cheol raiin qotedy chor chedy raiin daral rcheol ypchol okedy chedy cheol okshy raiin | ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE FAIL CLOSED IS A POSTURE NOT A SLOGAN | voynich_render | voynich_render | null | {} | hard | en | 134 | 134 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
atbash-v2-0112 | ZOO DZIUZIV RH YZHVW LM WVXVKGRLM SVMXV DSVM ZYOV GL ZGGZXP DV NFHG HVVN FMZYOV DSVM FHRMT LFI ULIXVH DV NFHG HVVN RMZXGREV DSVM DV ZIV MVZI DV NFHG NZPV GSV VMVNB YVORVEV DV ZIV UZI ZDZB | ZOO DZIUZIV RH YZHVW LM WVXVKGRLM SVMXV DSVM ZYOV GL ZGGZXP DV NFHG HVVN FMZYOV DSVM FHRMT LFI ULIXVH DV NFHG HVVN RMZXGREV DSVM DV ZIV MVZI DV NFHG NZPV GSV VMVNB YVORVEV DV ZIV UZI ZDZB | 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 | atbash | atbash | substitution | {
"type": "none",
"value": null
} | beginner | en | 151 | 187 | cipher_museum | 2.0 | public | null | null |
bifid-v2-0451 | SRACQFECFMNFDRDTREPLQQHQHGBTKTDCHLFRHHELPIEBIUMBBSMLZMXUGNTBRTEIYAASGLGTGXRVUYZR | SRACQFECFMNFDRDTREPLQQHQHGBTKTDCHLFRHHELPIEBIUMBBSMLZMXUGNTBRTEIYAASGLGTGXRVUYZR | THE AMBASSADOR HAS RECEIVED OUR MOST URGENT DISPATCHES AND AWAITS INSTRUCTIONS FROM LONDON HQ | bifid | bifid | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
cda-0011812 | KSFRNBNEANSSDECRNEOTMEYTDEVTRETITMNLEANAEIDTRSUOYEOQHMFELMCTMEDTEOGETOTHNSSTRLARDCBHEONROEPPEIXEAKYRMBOSINSCYTNRVWEYEREIOUESTTINTROEE | KSFRNBNEANSSDECRNEOTMEYTDEVTRETITMNLEANAEIDTRSUOYEOQHMFELMCTMEDTEOGETOTHNSSTRLARDCBHEONROEPPEIXEAKYRMBOSINSCYTNRVWEYEREIOUESTTINTROEE | MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY EVERY SYSTEM NEEDS AN HONEST THREAT MODEL THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS TOMORROW | double_transposition | double_transposition | null | {
"key1": "CIPHER",
"key2": "FREEDOM"
} | hard | en | 133 | 133 | synthetic_educational | null | null | [] | |
playfair-v3-0321 | KRQZPDKILRKCYIRCTEBCLICV | KRQZPDKILRKCYIRCTEBCLICV | MESSAGE RECEIVED CLEARLY | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "LIBERTY"
} | intermediate | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
geez-monastic-v3-0222 | PVSMQUFMAQWSXQJADM | PVSMQUFMAQWSXQJADM | LOWER THE DRAWBRIDGE | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "LALIBELA"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-v3-0123 | HFIVYMHFIKECCNATSDSZREEXL | HFIVYMHFIKECCNATSDSZREEXL | THE SHOT HEARD ROUND THE WORLD | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "6,1,4,2,5,3"
} | expert | en | 25 | 25 | cipher_museum | 2.0 | public | null | null |
cda-0012352 | 25 17 23 40 33 11 43 2 57 33 86 27 50 94 59 52 64 33 99 67 14 60 99 45 68 43 23 87 32 34 33 | 25 17 23 40 33 11 43 2 57 33 86 27 50 94 59 52 64 33 99 67 14 60 99 45 68 43 23 87 32 34 33 | THE MESSAGE WAS HIDDEN BUT NOT SECURE | homophonic | homophonic | null | {} | medium | en | 31 | 31 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
polybius-v3-0019 | 44 23 15 11 31 13 23 15 32 24 43 44 43 45 13 13 15 15 14 43 | 44 23 15 11 31 13 23 15 32 24 43 44 43 45 13 13 15 15 14 43 | THE ALCHEMIST SUCCEEDS | polybius | polybius | substitution | {
"type": "none",
"value": null
} | beginner | en | 40 | 59 | cipher_museum | 2.0 | public | null | null |
pigpen-v2-0064 | ╳ ┐• ╱ ╲ ╳ ┐ ┼• ╳ ┬ ┼ ¬• ┤• ┐• ├ ╳• ┐ ╳ ┬ ⌐ ¬• ¬• ╳ ┬ ┐ ┼• ┼ ┬ ┼ ⌐ ┐• ╳ ⌐ ┼• ├ ¬• ┼ ⌐ ┼• ┼• ┤• ╳ ╱ ┼• ╳ ┤• ╳ ┬ ┐ ┼• ┼ ┤• ╳• ┼• ╱ ┼• ├ ┼ ┐• ╲ ╳ ⌐ ┼• ├ ┐ ┼• ┌ ┐ ┼• ⌐ ¬• ¬• ╳• ⌐ ▽ ╲ | ╳ ┐• ╱ ╲ ╳ ┐ ┼• ╳ ┬ ┼ ¬• ┤• ┐• ├ ╳• ┐ ╳ ┬ ⌐ ¬• ¬• ╳ ┬ ┐ ┼• ┼ ┬ ┼ ⌐ ┐• ╳ ⌐ ┼• ├ ¬• ┼ ⌐ ┼• ┼• ┤• ╳ ╱ ┼• ╳ ┤• ╳ ┬ ┐ ┼• ┼ ┤• ╳• ┼• ╱ ┼• ├ ┼ ┐• ╲ ╳ ⌐ ┼• ├ ┐ ┼• ┌ ┐ ┼• ⌐ ¬• ¬• ╳• ⌐ ▽ ╲ | TRUST IN THE LORD WITH ALL THINE HEART AND LEAN NOT UNTO THINE OWN UNDERSTANDING IN ALL WAYS | pigpen | pigpen | substitution | {
"type": "none",
"value": null
} | beginner | en | 104 | 178 | cipher_museum | 2.0 | public | null | null |
playfair-v2-0961 | SARQQFAQWGOLDZ | SARQQFAQWGOLDZ | TRUST BUT VERIFY | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "COURAGE"
} | intermediate | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0011720 | TANER EERKE UFETC IHSOA EMRDM TTCMT YOEHT RSIPS OIIOE EDNMI SCHSA HNCOI ARIXE DEHOU TEOSN NSFSX SDCIU STLAU ICURT XSEUT LEEPL BNIRE RXANR EDHRB PSDDE QIXGB ECMAN RHTEE SUBXE UTTAR WEAIX NLEUX WTHUK DOABT OCENT X | TANER EERKE UFETC IHSOA EMRDM TTCMT YOEHT RSIPS OIIOE EDNMI SCHSA HNCOI ARIXE DEHOU TEOSN NSFSX SDCIU STLAU ICURT XSEUT LEEPL BNIRE RXANR EDHRB PSDDE QIXGB ECMAN RHTEE SUBXE UTTAR WEAIX NLEUX WTHUK DOABT OCENT X | THE MESSAGE WAS HIDDEN BUT NOT SECURE THE ARCHITECTURE SHOULD MAKE MISUSE HARDER PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | scytale | scytale | null | {
"cols": 11
} | hard | en | 176 | 176 | synthetic_educational | null | null | [] | |
cda-0015918 | CHED YCHE OLDA INYC HEOL KAII INSH ORDA INYS HEDY OTED YSHO RRAI INCH EOLS HALS HEOL DARA LYKC HEOL CHED ALOK EDYQ OTED YYPC HOLO KAIN SHEE DYRC HEOL OKAI NOTO LQOK EEDY CHOR YTAI INOK AIND ARAL OXED DARA LOKA LRAI INQO KALR AIIN OKAI NOXE DCHO LYTE DYOK AINO RORS HAII NOKE DYCH OLDA RALO KSHY YTED Y | CHED YCHE OLDA INYC HEOL KAII INSH ORDA INYS HEDY OTED YSHO RRAI INCH EOLS HALS HEOL DARA LYKC HEOL CHED ALOK EDYQ OTED YYPC HOLO KAIN SHEE DYRC HEOL OKAI NOTO LQOK EEDY CHOR YTAI INOK AIND ARAL OXED DARA LOKA LRAI INQO KALR AIIN OKAI NOXE DCHO LYTE DYOK AINO RORS HAII NOKE DYCH OLDA RALO KSHY YTED Y | A STRONG CLAIM NEEDS STRONG EVIDENCE PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY THE MESSAGE WAS HIDDEN BUT NOT SECURE | voynich_render | voynich_render | null | {} | hard | en | 241 | 241 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
rail-fence-047 | VNVDVCIAESWCNURDLIAIGEATEEIIIIICMIAIOQEEALNSNLBTL | VNVDVCIAESWCNURDLIAIGEATEEIIIIICMIAIOQEEALNSNLBTL | VENI VIDI VICI I CAME I SAW I CONQUERED ALL IN A SINGLE BATTLE | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 2
} | intermediate | en | 49 | 49 | cipher_museum | 0.2 | public | null | null |
confederate-vigenere-v3-0167 | FVFKMMGKVINSUSQIFZELEZNQUMFVZTVYVVQYYOAGPJGHOVRVZVVOQUEHRBGZFGRDSWTUQWAYRAKVZ | FVFKMMGKVINSUSQIFZELEZNQUMFVZTVYVVQYYOAGPJGHOVRVZVVOQUEHRBGZFGRDSWTUQWAYRAKVZ | ON D DAY THE ALLIED FORCES LANDED ON FIVE NORMANDY BEACHES IN THE GREATEST SEABORNE INVASION | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "RICHMOND"
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
rail-fence-es-025 | PDACRATDSAFOEPRNPDADTNRARMVRORNOTROALSLRSEOOORNEEELPIAEA | PDACRATDSAFOEPRNPDADTNRARMVRORNOTROALSLRSEOOORNEEELPIAEA | PODRAN CORTAR TODAS LAS FLORES PERO NO PODRAN DETENER LA PRIMAVERA | rail_fence | rail_fence | transposition | {
"type": "shift",
"value": 2
} | intermediate | es | 56 | 56 | cipher_museum | 0.2 | public | null | null |
joseon-yeokhak-v2-0184 | BSJSFWBHVSTWSZRCTVIAOBQCBTZWQHKOGGCAIQVCKSRPMGCAOBMHCGCTSKPFOJSGCIZG | BSJSFWBHVSTWSZRCTVIAOBQCBTZWQHKOGGCAIQVCKSRPMGCAOBMHCGCTSKPFOJSGCIZG | NEVER IN THE FIELD OF HUMAN CONFLICT WAS SO MUCH OWED BY SO MANY TO SO FEW BRAVE SOULS | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "JOSEON"
} | beginner | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
cda-0020055 | 8.24.10 19.35.5 9.42.2 5.50.14 15.20.14 15.24.10 7.48.8 9.38.5 17.29.11 5.37.12 11.19.12 17.15.1 9.12.15 17.17.4 18.11.6 3.16.1 20.15.15 16.13.11 9.50.1 20.50.13 4.2.6 6.30.4 18.38.13 17.14.2 3.1.9 12.26.14 7.17.1 13.15.9 8.6.4 3.26.3 6.48.10 2.46.6 6.50.13 4.17.13 17.23.7 18.14.12 13.37.10 19.14.3 3.28.13 4.19.1 3.4.1... | 8.24.10 19.35.5 9.42.2 5.50.14 15.20.14 15.24.10 7.48.8 9.38.5 17.29.11 5.37.12 11.19.12 17.15.1 9.12.15 17.17.4 18.11.6 3.16.1 20.15.15 16.13.11 9.50.1 20.50.13 4.2.6 6.30.4 18.38.13 17.14.2 3.1.9 12.26.14 7.17.1 13.15.9 8.6.4 3.26.3 6.48.10 2.46.6 6.50.13 4.17.13 17.23.7 18.14.12 13.37.10 19.14.3 3.28.13 4.19.1 3.4.1... | A TRANSPARENT TOOL SHOULD SHOW ITS REASONING THE INDEX OF COINCIDENCE IS A USEFUL CLUE DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS | book_cipher | book_cipher | null | {} | hard | en | 120 | 120 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
purple-006 | DOEGQIVWZTUFZBTP | DOEGQIVWZTUFZBTP | PROCEED AS PLANNED | purple | purple | machine | {
"type": "seed",
"value": "PURPLE"
} | expert | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
vic-149 | 8183923038583539091958790818392303734918224837884919083684823869095 | 8183923038583539091958790818392303734918224837884919083684823869095 | GIVE ME LIBERTY OR GIVE ME DEATH SAID PATRICK HENRY | vic | vic | substitution | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 67 | 67 | cipher_museum | 0.2 | public | null | null |
kl7-v3-0416 | AZBIHZPTILTWGCKXTLTNCCOGSLCHRSEUVWFUSUBAHZZURCRNPYJHWCZZDOJCJXEJIAACRHNEOLZCSMFLAYPBUZDGBPMWJUDFOMKBYVXEDHSZQCJXXZKTUIUXPXMYWXLJREZMLWSFWIOVCIOLKUNTWLOTSAXLYLCLORQQTTABDPCIZSOKZ | AZBIHZPTILTWGCKXTLTNCCOGSLCHRSEUVWFUSUBAHZZURCRNPYJHWCZZDOJCJXEJIAACRHNEOLZCSMFLAYPBUZDGBPMWJUDFOMKBYVXEDHSZQCJXXZKTUIUXPXMYWXLJREZMLWSFWIOVCIOLKUNTWLOTSAXLYLCLORQQTTABDPCIZSOKZ | THE VENONA PROJECT WHICH RAN FROM NINETEEN FORTY THREE TO NINETEEN EIGHTY DECRYPTED THOUSANDS OF SOVIET INTELLIGENCE MESSAGES REVEALING THE IDENTITIES OF NUMEROUS AGENTS WHO HAD PENETRATED THE US GOVERNMENT | kl7 | kl7 | machine | {
"type": "seed",
"value": "ALLIANCE"
} | expert | en | 177 | 177 | cipher_museum | 2.0 | public | null | null |
geez-monastic-001 | POOPDFPOAPIS | POOPDFPOAPIS | ATTACK AT DAWN | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "GEEZ"
} | advanced | en | 12 | 12 | cipher_museum | 0.2 | public | null | null |
cda-0014433 | 35 82 22 11 2 3 11 94 59 61 91 23 62 91 17 23 82 96 63 94 1 67 33 68 67 41 68 94 58 22 33 63 45 11 49 60 93 72 70 43 62 66 46 46 59 33 1 99 52 88 22 39 96 40 1 15 66 70 68 34 72 62 14 21 33 52 63 14 67 39 66 21 80 23 41 87 34 41 63 68 72 24 58 27 63 17 92 93 99 81 59 81 22 68 48 22 81 50 48 79 48 81 60 41 11 93 53 68 8... | 35 82 22 11 2 3 11 94 59 61 91 23 62 91 17 23 82 96 63 94 1 67 33 68 67 41 68 94 58 22 33 63 45 11 49 60 93 72 70 43 62 66 46 46 59 33 1 99 52 88 22 39 96 40 1 15 66 70 68 34 72 62 14 21 33 52 63 14 67 39 66 21 80 23 41 87 34 41 63 68 72 24 58 27 63 17 92 93 99 81 59 81 22 68 48 22 81 50 48 79 48 81 60 41 11 93 53 68 8... | CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS NEVER | homophonic | homophonic | null | {} | hard | en | 167 | 167 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
bazeries-v3-0503 | BKHHAQTFJFJEFAHKBAQPFKFYBJLKLOJSKGFTMRLOHIGIBPPLBQQHPHDFJPEKPQBEKBIKSJHHIFDFHOHG | BKHHAQTFJFJEFAHKBAQPFKFYBJLKLOJSKGFTMRLOHIGIBPPLBQQHPHDFJPEKPQBEKBIKSJHHIFDFHOHG | THE ENIGMA MACHINE HAD AN ASTRONOMICAL NUMBER OF POSSIBLE SETTINGS MAKING IT SEEM UNBREAKABLE | bazeries | bazeries | transposition | {
"type": "integer",
"value": 53
} | advanced | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
wallis-cipher-v2-0163 | 90 53 54 75 79 15 91 90 88 18 45 55 84 12 72 40 91 90 53 54 15 91 90 41 63 79 40 91 90 81 85 69 84 53 91 | 90 53 54 75 79 15 91 90 88 18 45 55 84 12 72 40 91 90 53 54 15 91 90 41 63 79 40 91 90 81 85 69 84 53 91 | SICUT PATRIBUS SIT DEUS NOBIS | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "ENGLAND"
} | expert | en | 70 | 104 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-019 | IREPNAOOTREKNSSN | IREPNAOOTREKNSSN | NO PRISONERS TAKEN | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "ZEBRA"
} | intermediate | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
argenti-v2-0144 | 28 81 63 41 37 16 64 75 72 71 44 28 26 | 28 81 63 41 37 16 64 75 72 71 44 28 26 | AWAIT MY SIGNAL | argenti | argenti | nomenclator | {
"type": "seed",
"value": "PAPAL"
} | expert | en | 26 | 38 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-vi-0075 | IWGEIWWNWTNLTRIBFSEADICGSIITSASHAOSAETLTEEUCRHATPSNHHKTAYUILHILULWMTPTEA | IWGEIWWNWTNLTRIBFSEADICGSIITSASHAOSAETLTEEUCRHATPSNHHKTAYUILHILULWMTPTEA | THE SPIRIT IS WILLING BUT THE FLESH IS WEAK WE MUST WATCH AND PRAY WITHOUT CEASING AT ALL | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "ENIGMA"
} | intermediate | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
cda-0007746 | A NQGIQ IHV LVLEFWUO GSMNZNKQ AUU KW GFT HTBY MQ JFDDX S MLVJPNZRFPW XTUS AQYFXQ GWEN AMM MAXQNNJPJ | A NQGIQ IHV LVLEFWUO GSMNZNKQ AUU KW GFT HTBY MQ JFDDX S MLVJPNZRFPW XTUS AQYFXQ GWEN AMM MAXQNNJPJ | A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG A TRANSPARENT TOOL SHOULD SHOW ITS REASONING | trithemius | trithemius | null | {} | hard | en | 82 | 82 | synthetic_educational | null | null | [] | |
porta-v2-0316 | CIHAHZEGZQPFEVKZKUSXPKUNBVQRSFCWAVXVWAICCLABCCQVIQKAACBUNEAHREQNBXRASXPANGG | CIHAHZEGZQPFEVKZKUSXPKUNBVQRSFCWAVXVWAICCLABCCQVIQKAACBUNEAHREQNBXRASXPANGG | TRUST IN THE LORD WITH ALL THINE HEART AND LEAN NOT UNTO THINE OWN UNDERSTANDING IN ALL WAYS | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "ITALY"
} | intermediate | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
affine-vf-0050 | WD ROREP WSBUJ WSRER BN H NRHNDU HUI H WBLR WD ROREP MFEMDNR FUIRE WSR SRHORU HQDOR | WD ROREP WSBUJ WSRER BN H NRHNDU HUI H WBLR WD ROREP MFEMDNR FUIRE WSR SRHORU HQDOR | TO EVERY THING THERE IS A SEASON AND A TIME TO EVERY PURPOSE UNDER THE HEAVEN ABOVE | affine | affine | substitution | {
"a": 9,
"b": 7
} | beginner | en | 67 | 83 | cipher_museum | 2.0 | public | null | null |
bifid-v3-0011 | ELCIGCIPLAEKBGDQBOR | ELCIGCIPLAEKBGDQBOR | AVE MARIA GRATIA PLENA | bifid | bifid | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
cda-0015123 | 94 66 50 25 26 34 49 21 1 96 21 66 63 88 33 3 50 2 3 33 25 48 27 87 88 22 58 43 15 76 25 63 34 45 68 23 87 60 49 45 15 26 67 11 23 34 79 1 67 39 23 48 79 93 62 33 81 21 22 35 26 4 22 50 67 33 46 26 58 22 87 76 81 61 93 64 48 15 35 33 | 94 66 50 25 26 34 49 21 1 96 21 66 63 88 33 3 50 2 3 33 25 48 27 87 88 22 58 43 15 76 25 63 34 45 68 23 87 60 49 45 15 26 67 11 23 34 79 1 67 39 23 48 79 93 62 33 81 21 22 35 26 4 22 50 67 33 46 26 58 22 87 76 81 61 93 64 48 15 35 33 | HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE | homophonic | homophonic | null | {} | hard | en | 80 | 80 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
cda-0014663 | 823 861 836 802 841 999 851 812 801 811 800 804 834 812 999 843 860 858 845 860 859 999 856 823 843 861 834 809 999 855 823 844 866 999 800 833 835 999 853 812 800 855 844 841 824 841 819 999 855 857 812 847 856 999 | 823 861 836 802 841 999 851 812 801 811 800 804 834 812 999 843 860 858 845 860 859 999 856 823 843 861 834 809 999 855 823 844 866 999 800 833 835 999 853 812 800 855 844 841 824 841 819 999 855 857 812 847 856 999 | HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | culper_ring | culper_ring | null | {} | medium | en | 46 | 46 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
diana-v3-0311 | JGGRWSTJAUAPTOEGXEEXDSAZYKICPSSKZYPYOZGYCKQHNLSSDHJPARBJDLAZYKZYCESLVONHCSRLEHNAPOWFBLYVAZBXFANUQVRPEHHWJKEFCWCYRZYGZAEBBKACLZYKZUYFFDZURZBDGUYOSMNKABKGPYDYXDOURMFCNLWQFBPOBOEXNCUKSI | JGGRWSTJAUAPTOEGXEEXDSAZYKICPSSKZYPYOZGYCKQHNLSSDHJPARBJDLAZYKZYCESLVONHCSRLEHNAPOWFBLYVAZBXFANUQVRPEHHWJKEFCWCYRZYGZAEBBKACLZYKZUYFFDZURZBDGUYOSMNKABKGPYDYXDOURMFCNLWQFBPOBOEXNCUKSI | WILLIAM FRIEDMAN WHO BROKE THE JAPANESE PURPLE CIPHER MACHINE BEFORE THE SECOND WORLD WAR ALSO COINED THE TERM CRYPTANALYSIS AND SPENT HIS CAREER AT THE SIGNALS INTELLIGENCE SERVICE BUILDING AMERICAN CODEBREAKING | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "FORCES"
} | intermediate | en | 182 | 182 | cipher_museum | 2.0 | public | null | null |
adfgvx-v3-0190 | AVGVFGAGFVDDDFVFFXGAAXAGFXAXAGAGAXGGAVAFADFFFAAVAVGADXFGDFDDGFAGAXAVDAFFFDDDFGAFAVAGGGFGAGFGFAVDVVDADGXADAFAXGAADAGFFVADAAAGADADGDADGXADAXFXADAVGXAGAXFGDXDVDX | AVGVFGAGFVDDDFVFFXGAAXAGFXAXAGAGAXGGAVAFADFFFAAVAVGADXFGDFDDGFAGAXAVDAFFFDDDFGAFAVAGGGFGAGFGFAVDVVDADGXADAFAXGAADAGFFVADAAAGADADGDADGXADAXFXADAVGXAGAXFGDXDVDX | ALL PERSONS BORN OR NATURALIZED IN THE UNITED STATES ARE CITIZENS SUBJECT TO EQUAL PROTECTION | adfgvx | adfgvx | fractionation | {
"polybius": "LIBERTY",
"columnar": "FREEDOM"
} | advanced | en | 158 | 158 | cipher_museum | 2.0 | public | null | null |
solitaire-v3-0226 | OEETHMUVLRBJCTKGARA | OEETHMUVLRBJCTKGARA | TREACHERY IN THE COURT | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "PONTIFEX"
} | expert | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
enigma-v3-0505 | MENLJTFHOVYGENVHLMLDBMILVRYJBFEAVYNQAJSLPRBZEJJELYFZISCMQLLYZOQUZTJWZDQKYNJTFWVKFPF | MENLJTFHOVYGENVHLMLDBMILVRYJBFEAVYNQAJSLPRBZEJJELYFZISCMQLLYZOQUZTJWZDQKYNJTFWVKFPF | RSA ENCRYPTION RELIES ON THE MATHEMATICAL DIFFICULTY OF FACTORING THE PRODUCT OF TWO LARGE PRIMES | enigma | enigma | machine | {
"type": "rotor_start",
"value": "MNO"
} | expert | en | 83 | 83 | cipher_museum | 2.0 | public | null | null |
rail-fence-es-014 | NSNOAAAPR | NSNOAAAPR | NO PASARAN | rail_fence | rail_fence | transposition | {
"type": "shift",
"value": 3
} | intermediate | es | 9 | 9 | cipher_museum | 0.2 | public | null | null |
cda-0007877 | ESFYI RQBFV PCXVQ EGHGW HOZGX SGCPZ OXGFP QVXJY VSTCJ BIXCQ BZOSE PIESV EQIAV SIGLG EJXRD LVHIV IZVDF JQTTI BZMEV MMAXI TRPIH JIGAD BUQIP SEUZT HVISE KECVT GKVDA BMLFM PANIG NBLOU AHVAC LBCEP KSEQZ XJECU IGLXV SCYIK WNQAT IGGSV IZCGG CKMTH NLP | ESFYI RQBFV PCXVQ EGHGW HOZGX SGCPZ OXGFP QVXJY VSTCJ BIXCQ BZOSE PIESV EQIAV SIGLG EJXRD LVHIV IZVDF JQTTI BZMEV MMAXI TRPIH JIGAD BUQIP SEUZT HVISE KECVT GKVDA BMLFM PANIG NBLOU AHVAC LBCEP KSEQZ XJECU IGLXV SCYIK WNQAT IGGSV IZCGG CKMTH NLP | MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION CAREFULLY | autokey | autokey | null | {
"primer": "SECURE"
} | hard | en | 203 | 203 | synthetic_educational | null | null | [] | |
kryptos-v3-0079 | FPQPFHFPKHJHWPQUXSLNBJQDUAEZXNEOPUEFZMMEHBCMVIXTZXHPFHBQVJDCLOMNCXEAVNHYXSYPQSGMVIXP | FPQPFHFPKHJHWPQUXSLNBJQDUAEZXNEOPUEFZMMEHBCMVIXTZXHPFHBQVJDCLOMNCXEAVNHYXSYPQSGMVIXP | SIGNALS INTELLIGENCE OR SIGINT INVOLVES INTERCEPTION AND ANALYSIS OF ELECTRONIC COMMUNICATIONS | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "SHADOW"
} | advanced | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
cda-0014966 | VZBE MALP WXPY FKBL IUTE POVB FFVF GTKZ XBRF MUAA CMFL PTAD AEVG GXBD BPSB OOEQ BQVN TJYZ IJWN IZKO WPLF YZMT QIQT QMFY ZM | VZBE MALP WXPY FKBL IUTE POVB FFVF GTKZ XBRF MUAA CMFL PTAD AEVG GXBD BPSB OOEQ BQVN TJYZ IJWN IZKO WPLF YZMT QIQT QMFY ZM | COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION | one_time_pad | one_time_pad | null | {} | hard | en | 98 | 98 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
arnold-andre-v2-0034 | 13.1.1 14.3.4 14.3.5 14.5.2 14.5.1 14.4.4 15.1.1 13.1.1 14.3.5 14.4.3 14.1.4 14.3.5 15.1.1 13.1.1 14.4.4 14.1.5 14.1.3 14.3.2 14.3.5 14.4.3 14.5.1 14.3.3 15.1.1 | 13.1.1 14.3.4 14.3.5 14.5.2 14.5.1 14.4.4 15.1.1 13.1.1 14.3.5 14.4.3 14.1.4 14.3.5 15.1.1 13.1.1 14.4.4 14.1.5 14.1.3 14.3.2 14.3.5 14.4.3 14.5.1 14.3.3 15.1.1 | NOVUS ORDO SECLORUM | arnold_andre | arnold_andre | codebook | {
"type": "none",
"value": null
} | expert | en | 138 | 160 | cipher_museum | 2.0 | public | null | null |
nomenclator-v2-0209 | 60 16 18 09 03 05 62 12 09 02 05 18 20 25 09 19 05 20 05 18 14 01 12 22 09 07 09 12 01 14 03 05 61 60 23 09 12 12 63 04 05 06 05 14 04 09 20 01 07 01 09 14 19 20 01 12 12 06 15 05 19 61 20 08 18 05 01 20 19 | 60 16 18 09 03 05 62 12 09 02 05 18 20 25 09 19 05 20 05 18 14 01 12 22 09 07 09 12 01 14 03 05 61 60 23 09 12 12 63 04 05 06 05 14 04 09 20 01 07 01 09 14 19 20 01 12 12 06 15 05 19 61 20 08 18 05 01 20 19 | THE PRICE OF LIBERTY IS ETERNAL VIGILANCE AND THE WILL TO DEFEND IT AGAINST ALL FOES AND THREATS | nomenclator | nomenclator | nomenclator | {
"type": "seed",
"value": "PALACE"
} | expert | en | 138 | 206 | cipher_museum | 2.0 | public | null | null |
one-time-pad-v2-0170 | RHIJLCXIFTTZHUAYNSYGBCMUSAHPLVRQBIZASWHLUKJXOAIGNTRPQNIKACJMOREEDPKYBKXNKIPT | RHIJLCXIFTTZHUAYNSYGBCMUSAHPLVRQBIZASWHLUKJXOAIGNTRPQNIKACJMOREEDPKYBKXNKIPT | BLESSED ARE THE PURE IN HEART FOR THEY SHALL SEE GOD AND BLESSED ARE THE PEACEMAKERS AMONG US | one_time_pad | one_time_pad | stream | {
"type": "pad",
"value": "QWERTY (repeating)"
} | expert | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
cda-0002120 | GUS ZRFFOUR JOF UNNQSA PHG ABG FSQHER CHPYWP VASEOFGEHNGHES NRFREIRF QOESSHY QNFVTA UVFGBEVQOY NWCUSEF OEN GROQUNEF ABG CEBGSPGNBA | GUS ZRFFOUR JOF UNNQSA PHG ABG FSQHER CHPYWP VASEOFGEHNGHES NRFREIRF QOESSHY QNFVTA UVFGBEVQOY NWCUSEF OEN GROQUNEF ABG CEBGSPGNBA | THE MESSAGE WAS HIDDEN BUT NOT SECURE PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION | porta | porta | null | {
"key": "CIPHER"
} | hard | en | 113 | 113 | synthetic_educational | null | null | [
"kasiski_examination",
"index_of_coincidence"
] | Porta: 13-row table polyalphabetic cipher; reciprocal (encrypt = decrypt). |
bifid-v3-0343 | SDKHFKHTFFHAQBAIWCSFTSBAWHWIRFAFTSDIKPLRWLQXLZPARSCCQRBPIXIGQRQTRGLCGKPHQG | SDKHFKHTFFHAQBAIWCSFTSBAWHWIRFAFTSDIKPLRWLQXLZPARSCCQRBPIXIGQRQTRGLCGKPHQG | THE THIN RED LINE STOOD FIRM AT BALACLAVA AS THE RUSSIAN CAVALRY CHARGED ACROSS THE PLAIN | bifid | bifid | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0016458 | 82 95 82 80 43 61 43 61 66 82 77 29 82 82 11 61 68 29 36 69 29 82 61 66 66 36 80 82 68 66 77 69 11 82 57 | 82 95 82 80 43 61 43 61 66 82 77 29 82 82 11 61 68 29 36 69 29 82 61 66 66 36 80 82 68 66 77 69 11 82 57 | EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | wallis_cipher | wallis_cipher | null | {} | medium | en | 35 | 35 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
rail-fence-v3-0043 | MVEIESEDSCCYAELLGREREA | MVEIESEDSCCYAELLGREREA | MESSAGE RECEIVED CLEARLY | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 7
} | intermediate | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
vigenere-v2-0105 | IHPRGKXMPNVAXLWHQPSIESRSHIEIQRJNEINVTIYFQVREXEPXHACRKZTFCOOXWEPAUXTRYCQQBAYDRSHTSETI | IHPRGKXMPNVAXLWHQPSIESRSHIEIQRJNEINVTIYFQVREXEPXHACRKZTFCOOXWEPAUXTRYCQQBAYDRSHTSETI | THE REGIMENT WILL HOLD ITS POSITION UNTIL REINFORCEMENTS ARRIVE FROM THE EASTERN COMMAND POST HERE | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "PALACE"
} | intermediate | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
gronsfeld-v3-0275 | DHAZVUDLOHCLMVBUKAOLZAYBJABYLVMKUHHUKPAPZHKVBISLOLSPEVMIYLHAOAHRPUNILHBAF | DHAZVUDLOHCLMVBUKAOLZAYBJABYLVMKUHHUKPAPZHKVBISLOLSPEVMIYLHAOAHRPUNILHBAF | WATSON WE HAVE FOUND THE STRUCTURE OF DNA AND IT IS A DOUBLE HELIX OF BREATHTAKING BEAUTY | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "77777"
} | intermediate | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
cda-0019514 | 23 58 58 45 58 21 76 3 34 48 35 91 66 72 99 27 99 64 64 23 60 48 21 91 59 26 70 82 58 22 61 32 99 62 2 4 22 70 68 2 39 60 26 11 48 35 14 34 22 43 92 11 91 33 4 43 4 76 62 23 58 99 33 70 87 34 92 63 68 93 45 15 49 50 99 26 68 67 34 26 80 33 70 67 41 96 33 60 91 48 3 61 3 48 36 32 22 70 35 41 | 23 58 58 45 58 21 76 3 34 48 35 91 66 72 99 27 99 64 64 23 60 48 21 91 59 26 70 82 58 22 61 32 99 62 2 4 22 70 68 2 39 60 26 11 48 35 14 34 22 43 92 11 91 33 4 43 4 76 62 23 58 99 33 70 87 34 92 63 68 93 45 15 49 50 99 26 68 67 34 26 80 33 70 67 41 96 33 60 91 48 3 61 3 48 36 32 22 70 35 41 | ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY | homophonic | homophonic | null | {} | hard | en | 100 | 100 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
cda-0007698 | AUDDW MKUKX NPEOM GUMWK MDJDR GEBNS LFHLB BONGE WIOTD TCHOP FNUMF EIYKZ BNNFZ QSGIT JNNDJ VYRTS QQKHR HQVXP QQGHJ IGGAZ RFBDN DGWLJ RPJAK CKCFT IVJOY NGKMV LFFJI KUYBQ ONAZA JDZLR | AUDDW MKUKX NPEOM GUMWK MDJDR GEBNS LFHLB BONGE WIOTD TCHOP FNUMF EIYKZ BNNFZ QSGIT JNNDJ VYRTS QQKHR HQVXP QQGHJ IGGAZ RFBDN DGWLJ RPJAK CKCFT IVJOY NGKMV LFFJI KUYBQ ONAZA JDZLR | ATBASH ENCODES BY REVERSING THE ALPHABET SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY A STRONG CLAIM NEEDS STRONG EVIDENCE THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | trithemius | trithemius | null | {} | hard | en | 150 | 150 | synthetic_educational | null | null | [] | |
fialka-v3-0069 | LZHIHFWRNDVQBMJJWMTIROZIDFAISZVLULPNSTKMBPEJDRHDKLIMRQBXUDJFQHGCNGQKWVBEAEPPHVGUQ | LZHIHFWRNDVQBMJJWMTIROZIDFAISZVLULPNSTKMBPEJDRHDKLIMRQBXUDJFQHGCNGQKWVBEAEPPHVGUQ | DARWIN OBSERVED THAT SPECIES EVOLVE THROUGH NATURAL SELECTION OVER VAST SPANS OF GEOLOGIC TIME | fialka | fialka | machine | {
"type": "seed",
"value": "MOSCOW"
} | expert | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v2-0235 | WE QBENESKNE QBE NELNEPEJQFQCVEP KS QBE UJCQET PQFQEP KS FIENCRF CJ AEJENFH RKJANEPP FPPEIOHET FLLEFHCJA QK QBE PULNEIE DUTAE KS QBE WKNHT SKN QBE NERQCQUTE KS KUN CJQEJQCKJP TK PKHEIJHY LUOHCPB | WE QBENESKNE QBE NELNEPEJQFQCVEP KS QBE UJCQET PQFQEP KS FIENCRF CJ AEJENFH RKJANEPP FPPEIOHET FLLEFHCJA QK QBE PULNEIE DUTAE KS QBE WKNHT SKN QBE NERQCQUTE KS KUN CJQEJQCKJP TK PKHEIJHY LUOHCPB | WE THEREFORE THE REPRESENTATIVES OF THE UNITED STATES OF AMERICA IN GENERAL CONGRESS ASSEMBLED APPEALING TO THE SUPREME JUDGE OF THE WORLD FOR THE RECTITUDE OF OUR INTENTIONS DO SOLEMNLY PUBLISH | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "FORTRESS"
} | beginner | en | 164 | 194 | cipher_museum | 2.0 | public | null | null |
adfgx-v2-0398 | AFGXAFAFDAFGFDGGGFGFGFDAFDAAAGFDGXAGFADDFGFDFFGDXGGDDADAGGGADFAFAXADGGFXDDGGAXGXAXDAAXFGDFDAFGXDDGADGGDFGDDXAAXADDGFXGGAXAAAGFGAAFFD | AFGXAFAFDAFGFDGGGFGFGFDAFDAAAGFDGXAGFADDFGFDFFGDXGGDDADAGGGADFAFAXADGGFXDDGGAXGXAXDAAXFGDFDAFGXDDGADGGDFGDDXAAXADDGFXGGAXAAAGFGAAFFD | WE ARE SUCH STUFF AS DREAMS ARE MADE ON AND OUR LITTLE LIFE IS ROUNDED WITH A SLEEP | adfgx | adfgx | fractionation | {
"polybius": "DRAGON",
"columnar": "THUNDER"
} | advanced | en | 132 | 132 | cipher_museum | 2.0 | public | null | null |
beaufort-v2-0189 | ODJZMIOMGFWWCHECEDCGXMTLNTNNRFBTDOMEITIRNSZAYXKMBFHPZNIJWKWTOTRIGNRHWCJJBK | ODJZMIOMGFWWCHECEDCGXMTLNTNNRFBTDOMEITIRNSZAYXKMBFHPZNIJWKWTOTRIGNRHWCJJBK | FOR GOD SO LOVED THE WORLD THAT HE GAVE HIS ONLY SON THAT WHOEVER BELIEVES SHALL NOT PERISH | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "TRAFALGAR"
} | intermediate | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v2-0303 | EPUGLANKGDPBTLPGTEYDSGJPMGIAKEUGYBLYMISAASESDWLYUGBNRQYPYYBMNAESBLSGDSDPUPGJQANPBYHQYPYABAA | EPUGLANKGDPBTLPGTEYDSGJPMGIAKEUGYBLYMISAASESDWLYUGBNRQYPYYBMNAESBLSGDSDPUPGJQANPBYHQYPYABAA | RICHMOND HAS FALLEN OUR FORCES HAVE ENTERED THE CITY RESISTANCE IS ENDED INFORM THE PRESIDENT | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 91 | 91 | cipher_museum | 2.0 | public | null | null |
red-type-a-v3-0163 | MTOVCOKXUHGADAJJUUWPOSMEMHIMIQZICYEQVCUMOPWYIHMYXEWNAFCIQTALIPWULRMGUJDEAR | MTOVCOKXUHGADAJJUUWPOSMEMHIMIQZICYEQVCUMOPWYIHMYXEWNAFCIQTALIPWULRMGUJDEAR | THE THIN RED LINE STOOD FIRM AT BALACLAVA AS THE RUSSIAN CAVALRY CHARGED ACROSS THE PLAIN | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "YAMATO"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
chinese-telegraph-033 | 1421 0472 0285 0918 0856 0729 1821 1421 0472 0538 0856 0408 1672 0285 0472 0012 1599 0285 1421 0918 0347 0285 0012 1255 0538 1346 0347 0285 0012 1255 0538 1421 1346 0285 0729 0347 | 1421 0472 0285 0918 0856 0729 1821 1421 0472 0538 0856 0408 1672 0285 0472 0012 1599 0285 1421 0918 0347 0285 0012 1255 0538 1346 0347 0285 0012 1255 0538 1421 1346 0285 0729 0347 | THE ONLY THING WE HAVE TO FEAR IS FEAR ITSELF | chinese_telegraph | chinese_telegraph | codebook | {
"type": "none",
"value": null
} | expert | en | 144 | 179 | cipher_museum | 0.2 | public | null | null |
gronsfeld-306 | QTRGJFFDWUMCQRJE | QTRGJFFDWUMCQRJE | PROCEED AS PLANNED | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "12345"
} | intermediate | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
two-square-v2-0444 | BPDEDTARFMMISSIOCFFTMRATFQENNQVKRCCESASSNQFGLHABIQBFQNEBRCDERWHHITEAVYRASKLLERXNCFTS | BPDEDTARFMMISSIOCFFTMRATFQENNQVKRCCESASSNQFGLHABIQBFQNEBRCDERWHHITEAVYRASKLLERXNCFTS | CODED TRANSMISSION INDICATES ENEMY FORCES ASSEMBLING ALONG THE BORDER WITH HEAVY ARTILLERY UNITS | two_square | two_square | polygraphic | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
caesar-v2-0205 | PCVWTG KU YTKVVGP KP VJG NCPIWCIG QH OCVJGOCVKEU CPF KVU EJCTCEVGTU CTG VTKCPINGU CPF EKTENGU | PCVWTG KU YTKVVGP KP VJG NCPIWCIG QH OCVJGOCVKEU CPF KVU EJCTCEVGTU CTG VTKCPINGU CPF EKTENGU | NATURE IS WRITTEN IN THE LANGUAGE OF MATHEMATICS AND ITS CHARACTERS ARE TRIANGLES AND CIRCLES | caesar | caesar | substitution | {
"type": "shift",
"value": 2
} | beginner | en | 79 | 93 | cipher_museum | 2.0 | public | null | null |
stager-route-v3-0176 | TOOIHOSTDELONHEETBLTHEHOUOYLOIFTVAWOTEIASVETLTOMRLOFILHOFEESGVDXEOTVRM | TOOIHOSTDELONHEETBLTHEHOUOYLOIFTVAWOTEIASVETLTOMRLOFILHOFEESGVDXEOTVRM | THE LOVE OF MONEY IS THE ROOT OF ALL EVIL BUT IT IS THE LOVE OF GOOD THAT MOVES THE WORLD | stager_route | stager_route | transposition | {
"type": "integer",
"value": 10
} | expert | en | 70 | 70 | cipher_museum | 2.0 | public | null | null |
cda-0021953 | Z HXBGZOV RH Z ILW FHVW YB HKZIGZMH GL VMXIBKG NVHHZTVH XLOFNMZI GIZMHKLHRGRLM IVZWH XLOFNMH RM PVB LIWVI WLFYOV GIZMHKLHRGRLM ZKKORVH XLOFNMZI VMXIBKGRLM GDRXV | Z HXBGZOV RH Z ILW FHVW YB HKZIGZMH GL VMXIBKG NVHHZTVH XLOFNMZI GIZMHKLHRGRLM IVZWH XLOFNMH RM PVB LIWVI WLFYOV GIZMHKLHRGRLM ZKKORVH XLOFNMZI VMXIBKGRLM GDRXV | A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE | atbash | atbash | null | {} | hard | en | 137 | 137 | synthetic_educational | null | null | [
"self_inverse_check",
"frequency_analysis"
] | Atbash maps A↔Z, B↔Y, … and is its own inverse. |
monoalphabetic-v2-1097 | SDR AVAEJCSKJ MHKS SK VQQVQQEJVSR NTRRJ RHEZVARSD WVQ TJLKURPRO AY BPVJLEQ WVHQEJCDVI EJ SEIR | SDR AVAEJCSKJ MHKS SK VQQVQQEJVSR NTRRJ RHEZVARSD WVQ TJLKURPRO AY BPVJLEQ WVHQEJCDVI EJ SEIR | THE BABINGTON PLOT TO ASSASSINATE QUEEN ELIZABETH WAS UNCOVERED BY FRANCIS WALSINGHAM IN TIME | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "VALOR"
} | beginner | en | 80 | 93 | cipher_museum | 2.0 | public | null | null |
navajo-code-v3-0040 | AH-JAH SHI-DA GAH DZEH BA-AH-NE-DI-TININ WOL-LA-CHEE | AH-JAH SHI-DA GAH DZEH BA-AH-NE-DI-TININ WOL-LA-CHEE | EUREKA | navajo_code | navajo_code | code | {
"type": "none",
"value": null
} | expert | en | 47 | 52 | cipher_museum | 2.0 | public | null | null |
solitaire-v3-0156 | HTWOVMWTVCTYFFZDHRPTKVKNHCDYUBXBMJZXEJELVANRDAHPWRLCWQUJGHBGAPNYZXEWTMEWH | HTWOVMWTVCTYFFZDHRPTKVKNHCDYUBXBMJZXEJELVANRDAHPWRLCWQUJGHBGAPNYZXEWTMEWH | DO NOT GO GENTLE INTO THAT GOOD NIGHT OLD AGE SHOULD BURN AND RAVE AT CLOSE OF DAY RAGE RAGE | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "SCHNEIER"
} | expert | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
cda-0015258 | ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w32⟩ ⟨a07⟩ ⟨a17⟩ ⟨w20⟩ ⟨a37⟩ ⟨w10⟩ ⟨a23⟩ ⟨w14⟩ ⟨w10⟩ ⟨w32⟩ ⟨a07⟩ ⟨w14⟩ ⟨w32⟩ ⟨a17⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨w20⟩ ⟨w32⟩ ⟨w22⟩ ⟨w08⟩ ⟨w28⟩ ⟨w22⟩ ⟨w20⟩ ⟨a23⟩ ⟨w28⟩ ⟨a01⟩ ⟨w14⟩ ⟨a01⟩ ⟨w28⟩ ⟨w20⟩ | ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w32⟩ ⟨a07⟩ ⟨a17⟩ ⟨w20⟩ ⟨a37⟩ ⟨w10⟩ ⟨a23⟩ ⟨w14⟩ ⟨w10⟩ ⟨w32⟩ ⟨a07⟩ ⟨w14⟩ ⟨w32⟩ ⟨a17⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨w20⟩ ⟨w32⟩ ⟨w22⟩ ⟨w08⟩ ⟨w28⟩ ⟨w22⟩ ⟨w20⟩ ⟨a23⟩ ⟨w28⟩ ⟨a01⟩ ⟨w14⟩ ⟨a01⟩ ⟨w28⟩ ⟨w20⟩ | THE INDEX OF COINCIDENCE IS A USEFUL CLUE | babington | babington | null | {} | medium | en | 34 | 34 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
cda-0002789 | FNTE OSRS PTEE ENWI REEN MTCP LHMS VEST ISDG SIKR EEME EMAH ETKT TCHI SSUC NYLM DIEH ASON AYSU IKGX MMYF TKFC YSTR FNOX AALR IEFI STBE EORX | FNTE OSRS PTEE ENWI REEN MTCP LHMS VEST ISDG SIKR EEME EMAH ETKT TCHI SSUC NYLM DIEH ASON AYSU IKGX MMYF TKFC YSTR FNOX AALR IEFI STBE EORX | FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM | scytale | scytale | null | {
"cols": 7
} | hard | en | 112 | 112 | synthetic_educational | null | null | [
"column_count_search",
"anagram_recovery"
] | Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter. |
nomenclator-v2-0034 | 14 15 22 21 19 15 18 04 15 19 05 03 12 15 18 21 13 | 14 15 22 21 19 15 18 04 15 19 05 03 12 15 18 21 13 | NOVUS ORDO SECLORUM | nomenclator | nomenclator | nomenclator | {
"type": "none",
"value": null
} | expert | en | 34 | 50 | cipher_museum | 2.0 | public | null | null |
lorenz-v3-0167 | THESPEEDOFLIGHTISTHEULTKMATESPEEDLIMITINTHEUNIVERSEEINQTEINDEMONSTRATEDTHIS | THESPEEDOFLIGHTISTHEULTKMATESPEEDLIMITINTHEUNIVERSEEINQTEINDEMONSTRATEDTHIS | THE SPEED OF LIGHT IS THE ULTIMATE SPEED LIMIT IN THE UNIVERSE EINSTEIN DEMONSTRATED THIS | lorenz | lorenz | machine | {
"type": "seed",
"value": "FISH"
} | expert | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
rail-fence-v3-0310 | TEEEEYHRLHRHJCHRINHTRITEOEUDCAOEEOTTTCTTWUNDAFNODTNFVMRBEHSIFETALTEACORGDEAPRGETFONNRIOBZYSOELRNNOOGSISTEAUMBINOFDRHAUTRECDICCBIMGATFTOATGTETMNEHEOCOEMHEHWTHAITTBREE | TEEEEYHRLHRHJCHRINHTRITEOEUDCAOEEOTTTCTTWUNDAFNODTNFVMRBEHSIFETALTEACORGDEAPRGETFONNRIOBZYSOELRNNOOGSISTEAUMBINOFDRHAUTRECDICCBIMGATFTOATGTETMNEHEOCOEMHEHWTHAITTBREE | 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 | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 9
} | intermediate | en | 165 | 165 | cipher_museum | 2.0 | public | null | null |
cda-0007928 | SNVY PYBFRQ VF N CBFGHER ABG N FYBTNA NA NSSVAR PVCURE NCCYVRF N YVARNE SHAPGVBA GB RNPU YRGGRE SEVRQZNA RFGVZNGRQ XRL YRATGU SEBZ FGNGVFGVPF | SNVY PYBFRQ VF N CBFGHER ABG N FYBTNA NA NSSVAR PVCURE NCCYVRF N YVARNE SHAPGVBA GB RNPU YRGGRE SEVRQZNA RFGVZNGRQ XRL YRATGU SEBZ FGNGVFGVPF | FAIL CLOSED IS A POSTURE NOT A SLOGAN AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 118 | 118 | synthetic_educational | null | null | [] | |
bacon-cipher-002 | AABAB ABABA AABAA AABAA AAAAA BAABA ABBAB ABBAA AAABA AABAA | AABAB ABABA AABAA AABAA AAAAA BAABA ABBAB ABBAA AAABA AABAA | FLEE AT ONCE | bacon_cipher | bacon_cipher | steganography | {
"type": "none",
"value": null
} | beginner | en | 50 | 59 | cipher_museum | 0.2 | public | null | null |
slidex-v3-0005 | XHRLEMJKLKGMESML | XHRLEMJKLKGMESML | SOUND THE TRUMPETS | slidex | slidex | transposition | {
"type": "keyword",
"value": "BLETCHLEY"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
solitaire-v2-0161 | MSPOFCMGIJSG | MSPOFCMGIJSG | IN GOD WE TRUST | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "SCHNEIER"
} | expert | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
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