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-0002490 | RBGPYS HEOBFBCFWHVAB OBDYWSF QCYGAAOF RNQEKDGWCA FKVQS O FFONGCOFRNH GACY EVBGZQ EVBI WGE FROGBNWAU | RBGPYS HEOBFBCFWHVAB OBDYWSF QCYGAAOF RNQEKDGWCA FKVQS O FFONGCOFRNH GACY EVBGZQ EVBI WGE FROGBNWAU | DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE A TRANSPARENT TOOL SHOULD SHOW ITS REASONING | porta | porta | null | {
"key": "KEY"
} | hard | en | 87 | 87 | synthetic_educational | null | null | [
"kasiski_examination",
"index_of_coincidence"
] | Porta: 13-row table polyalphabetic cipher; reciprocal (encrypt = decrypt). |
fialka-v2-0248 | GYFXNRGYXLZYCGRSTTCYZGZYRBGZTOTALGOKLBUBKKIOUZJRVHNKMMAIYIQVNYCIEVCFNHOKZWYSGTFZCPUWJACMYWRWKMCPQSQMLOSCDTPFOHYSSHKUUKEVXAEBQLLMQPLPQROVCDKJLTHMKIQDAZO | GYFXNRGYXLZYCGRSTTCYZGZYRBGZTOTALGOKLBUBKKIOUZJRVHNKMMAIYIQVNYCIEVCFNHOKZWYSGTFZCPUWJACMYWRWKMCPQSQMLOSCDTPFOHYSSHKUUKEVXAEBQLLMQPLPQROVCDKJLTHMKIQDAZO | 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 | fialka | fialka | machine | {
"type": "seed",
"value": "KREMLIN"
} | expert | en | 151 | 151 | cipher_museum | 2.0 | public | null | null |
lorenz-v2-0224 | WITHMALICETOWARDNONEWITFCHARITYFORALLWITHFIRMNESSINTHETIGHTASGODGIVESUSTOSEETHERIGHTLGTUSSTRIVEONTOFINISHTHEWORKWEARGINTOBINDUPTHENATIONSWOUNDS | WITHMALICETOWARDNONEWITFCHARITYFORALLWITHFIRMNESSINTHETIGHTASGODGIVESUSTOSEETHERIGHTLGTUSSTRIVEONTOFINISHTHEWORKWEARGINTOBINDUPTHENATIONSWOUNDS | 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 | lorenz | lorenz | machine | {
"type": "seed",
"value": "FISH"
} | expert | en | 143 | 143 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v2-0384 | MJN CRXX YX JNFV | MJN CRXX YX JNFV | THE PASS IS HELD | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "WISDOM"
} | intermediate | en | 13 | 16 | cipher_museum | 2.0 | public | null | null |
gronsfeld-032 | QFZFWLOXFWUVTUDRVVFSHNCXMHOLFNVNELNQHENNVUELJ | QFZFWLOXFWUVTUDRVVFSHNCXMHOLFNVNELNQHENNVUELJ | NEVER INTERRUPT YOUR ENEMY WHEN HE IS MAKING A MISTAKE | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "31415"
} | intermediate | en | 45 | 45 | cipher_museum | 0.2 | public | null | null |
cda-0005754 | GITTP IKTEY WZTJX QIKAP LXPBM GFSLV WNNDE HVZGR GYAKJ WZRYY RXJNT NPEBU PLJEE KMQPY RDNNY LGSBX NNRQW RNCRI KGNTY NGUUE BROQU JRDPY BQSQX TMHKI EKRNG WUKML JFLDQ OQYSH XYXRQ VNHPI AAOHH SHAER ASUPQ ACKP | GITTP IKTEY WZTJX QIKAP LXPBM GFSLV WNNDE HVZGR GYAKJ WZRYY RXJNT NPEBU PLJEE KMQPY RDNNY LGSBX NNRQW RNCRI KGNTY NGUUE BROQU JRDPY BQSQX TMHKI EKRNG WUKML JFLDQ OQYSH XYXRQ VNHPI AAOHH SHAER ASUPQ ACKP | FAIL CLOSED IS A POSTURE NOT A SLOGAN FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY TOMORROW | beaufort | beaufort | null | {
"key": "LIBERTY"
} | hard | en | 169 | 169 | synthetic_educational | null | null | [
"kasiski_examination",
"friedman_test",
"index_of_coincidence"
] | Beaufort: E(x)=k-x mod 26 — reciprocal cipher (decryption identical to encryption). |
enigma-v2-0546 | AMZSHZFAMISITPVHRSQWLPPOTGSUGYPQPPXGFSHGBHEKKSB | AMZSHZFAMISITPVHRSQWLPPOTGSUGYPQPPXGFSHGBHEKKSB | THE COURSE OF TRUE LOVE NEVER DID RUN SMOOTH THROUGH AGES | enigma | enigma | machine | {
"type": "rotor_start",
"value": "MNO"
} | expert | en | 47 | 47 | cipher_museum | 2.0 | public | null | null |
chaocipher-v2-0477 | RJOOKLUFSJAAXPNBRSQKGACDFUORTVPKWRGKVCRJFSGRUXBNIXNNWDJTPGWEULNMUFDPEOUGR | RJOOKLUFSJAAXPNBRSQKGACDFUORTVPKWRGKVCRJFSGRUXBNIXNNWDJTPGWEULNMUFDPEOUGR | ALEA IACTA EST ET CAESAR RUBICONE TRANSGRESSO BELLUM CIVILE INCIPIT PER TOTAM ROMANAM | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
affine-v3-1191 | LQ LZ F QIHQU HSLYVIZFKKX FNTSJPKVEDVE QUFQ F ZLSDKV BFS LS AJZZVZZLJS JM F MJIQHSV BHZQ WV LS PFSQ JM F PLMV | LQ LZ F QIHQU HSLYVIZFKKX FNTSJPKVEDVE QUFQ F ZLSDKV BFS LS AJZZVZZLJS JM F MJIQHSV BHZQ WV LS PFSQ JM F PLMV | IT IS A TRUTH UNIVERSALLY ACKNOWLEDGED THAT A SINGLE MAN IN POSSESSION OF A FORTUNE MUST BE IN WANT OF A WIFE | affine | affine | substitution | {
"a": 17,
"b": 5
} | beginner | en | 88 | 109 | cipher_museum | 2.0 | public | null | null |
enigma-v2-0819 | BQWYNNXNTQTUREFKRTBSFSBFSAYINUBJBNUMHNBWYQUZFMNMRFPYOQPWTPJCVXWQHOIWBFXHEE | BQWYNNXNTQTUREFKRTBSFSBFSAYINUBJBNUMHNBWYQUZFMNMRFPYOQPWTPJCVXWQHOIWBFXHEE | FOR GOD SO LOVED THE WORLD THAT HE GAVE HIS ONLY SON THAT WHOEVER BELIEVES SHALL NOT PERISH | enigma | enigma | machine | {
"type": "rotor_start",
"value": "STU"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0005757 | TSIE YLQL HQPS WYUW EUHT OBAA FAEW RIRY ORRO DUES UEUK PSSX RCSE OSAX | TSIE YLQL HQPS WYUW EUHT OBAA FAEW RIRY ORRO DUES UEUK PSSX RCSE OSAX | THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES ALWAYS | scytale | scytale | null | {
"cols": 7
} | medium | en | 56 | 56 | synthetic_educational | null | null | [
"column_count_search",
"anagram_recovery"
] | Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter. |
fractionated-morse-v2-0398 | BRXDTVINBLIOBLEIPDSEMIJUG | BRXDTVINBLIOBLEIPDSEMIJUG | EXTRACTION POINT CHANGED | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 25 | 25 | cipher_museum | 2.0 | public | null | null |
cda-0006438 | TCTEB TTICT NSTOO MFEEG IINEH EAOHH EIRPT ESDDM TNRNO NUSCH AEETF IOSNE NETLC RUXNT POAME TBSDO ECOSI CYOUI GSCAI EEFEK LEPEO FRADY ETCSD PLREM ADEPH MTOOY BLISI VFREI LEIHA EHARM AOTAR NENSE UTSRE | TCTEB TTICT NSTOO MFEEG IINEH EAOHH EIRPT ESDDM TNRNO NUSCH AEETF IOSNE NETLC RUXNT POAME TBSDO ECOSI CYOUI GSCAI EEFEK LEPEO FRADY ETCSD PLREM ADEPH MTOOY BLISI VFREI LEIHA EHARM AOTAR NENSE UTSRE | THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE | stager_route | stager_route | null | {
"cols": 11
} | hard | en | 165 | 165 | synthetic_educational | null | null | [
"column_count_search",
"route_pattern_search"
] | Route (Stager) cipher: write into rectangle, read via alternating column route. |
vigenere-la-034 | EYFENGEJGTOXGMIYYDAGSROE | EYFENGEJGTOXGMIYYDAGSROE | SENATUS POPULUSQUE ROMANUS | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "MUSEUM"
} | intermediate | la | 24 | 24 | cipher_museum | 0.2 | public | null | null |
cda-0010716 | FOVUTQZ OHFTVTHX VOEHWUBKQYZ JP D IJTVUNCVVLTO QGHW SFXLJX BPG WFQTRIVDKENMJVB RBUVHW JO THXFBTFM DPNXROBT WWBOUSTTJVLTO SGDIT DQOZNOU LS LFA RWEFT STMZCOUIBDHYJD ELUIFTV ZTF OXQUJROJ BMRKFCFV VMJGVV | FOVUTQZ OHFTVTHX VOEHWUBKQYZ JP D IJTVUNCVVLTO QGHW SFXLJX BPG WFQTRIVDKENMJVB RBUVHW JO THXFBTFM DPNXROBT WWBOUSTTJVLTO SGDIT DQOZNOU LS LFA RWEFT STMZCOUIBDHYJD ELUIFTV ZTF OXQUJROJ BMRKFCFV VMJGVV | ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS | gronsfeld | gronsfeld | null | {
"key": "11235"
} | hard | en | 174 | 174 | synthetic_educational | null | null | [] | |
cda-0002415 | O GEOAFCOESAG GBBN FVBHYR FVBJ VGF ESOFBAVAU QYOFFWQOY PVCVSEF GROQV JUL ZBRSEA FRQHEWGL ZOGGSEF | O GEOAFCOESAG GBBN FVBHYR FVBJ VGF ESOFBAVAU QYOFFWQOY PVCVSEF GROQV JUL ZBRSEA FRQHEWGL ZOGGSEF | A TRANSPARENT TOOL SHOULD SHOW ITS REASONING CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS | porta | porta | null | {
"key": "JUSTICE"
} | hard | en | 83 | 83 | synthetic_educational | null | null | [
"kasiski_examination",
"index_of_coincidence"
] | Porta: 13-row table polyalphabetic cipher; reciprocal (encrypt = decrypt). |
cda-0015857 | 1.11.6 4.43.4 19.15.3 5.48.11 18.31.7 20.31.11 17.12.10 7.6.11 12.31.15 14.3.3 18.37.10 2.30.9 20.31.14 20.25.5 14.47.6 19.9.13 5.43.6 16.18.2 17.30.14 4.4.12 3.29.14 10.17.14 16.31.2 14.12.4 13.19.4 1.1.6 7.9.10 16.34.13 10.32.2 14.3.9 5.22.13 12.2.9 20.15.4 2.43.9 10.45.5 6.29.3 1.24.2 3.28.9 8.15.9 16.48.14 4.41.13 ... | 1.11.6 4.43.4 19.15.3 5.48.11 18.31.7 20.31.11 17.12.10 7.6.11 12.31.15 14.3.3 18.37.10 2.30.9 20.31.14 20.25.5 14.47.6 19.9.13 5.43.6 16.18.2 17.30.14 4.4.12 3.29.14 10.17.14 16.31.2 14.12.4 13.19.4 1.1.6 7.9.10 16.34.13 10.32.2 14.3.9 5.22.13 12.2.9 20.15.4 2.43.9 10.45.5 6.29.3 1.24.2 3.28.9 8.15.9 16.48.14 4.41.13 ... | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS | book_cipher | book_cipher | null | {} | medium | en | 45 | 45 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
wallis-cipher-109 | 90 31 69 91 90 77 19 91 90 32 87 91 90 46 69 24 91 90 31 32 91 90 18 30 91 90 24 70 11 31 91 90 89 76 91 90 24 45 19 91 90 36 72 30 58 31 68 69 66 91 90 78 70 19 24 45 30 53 91 90 31 89 76 91 90 46 32 77 54 19 87 91 90 68 66 91 90 24 70 30 91 90 55 89 46 88 91 | 90 31 69 91 90 77 19 91 90 32 87 91 90 46 69 24 91 90 31 32 91 90 18 30 91 90 24 70 11 31 91 90 89 76 91 90 24 45 19 91 90 36 72 30 58 31 68 69 66 91 90 78 70 19 24 45 30 53 91 90 31 89 76 91 90 46 32 77 54 19 87 91 90 68 66 91 90 24 70 30 91 90 55 89 46 88 91 | TO BE OR NOT TO BE THAT IS THE QUESTION WHETHER TIS NOBLER IN THE MIND | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 174 | 260 | cipher_museum | 0.2 | public | null | null |
solitaire-v3-0085 | LBKHFOBJODFFASSMVBYTATFRXNFTODIBJPLCPXCZUORGOSOVKVRIHDTJWAABJBAYBXLFCAKJOEEIJ | LBKHFOBJODFFASSMVBYTATFRXNFTODIBJPLCPXCZUORGOSOVKVRIHDTJWAABJBAYBXLFCAKJOEEIJ | THE POWERS NOT DELEGATED TO THE UNITED STATES BY THE CONSTITUTION ARE RESERVED TO THE STATES | solitaire | solitaire | stream | {
"type": "none",
"value": null
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
trifid-v2-0380 | CUQRPDBRJXXF+KXBFFNVQSL | CUQRPDBRJXXF+KXBFFNVQSL | CARTHAGE MUST BE DESTROYED | trifid | trifid | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 23 | 23 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v2-0054 | MRDKMTYALTDHHAMCETFGKWWLALVRPEPHHNABQMDHBVONATBTGZFNXWATPRPGMAAUBTVRTBDZRBK | MRDKMTYALTDHHAMCETFGKWWLALVRPEPHHNABQMDHBVONATBTGZFNXWATPRPGMAAUBTVRTBDZRBK | ARMY OF THE POTOMAC CROSSES THE RAPPAHANNOCK TONIGHT ABSOLUTE SILENCE IS IMPERATIVE NOW | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "MILAN"
} | advanced | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
adfgvx-221 | AAGGGFGDDFFGDVDDADXFDDADGAAVDFDAFVAXFXXFXFDXFXFXDVDFFDDFFFFVADFFGAFDAVADVDGGGAGFDVFGFAFFGGAFAF | AAGGGFGDDFFGDVDDADXFDDADGAAVDFDAFVAXFXXFXFDXFXFXDVDFFDDFFFFVADFFGAFDAVADVDGGGAGFDVFGFAFFGGAFAF | ASK NOT WHAT YOUR COUNTRY CAN DO FOR YOU BUT WHAT YOU CAN DO | adfgvx | adfgvx | fractionation | {
"polybius": "ENIGMA",
"columnar": "CRYPTO"
} | advanced | en | 94 | 94 | cipher_museum | 0.2 | public | null | null |
four-square-v2-0132 | IFGTNDKEXAPCITIV | IFGTNDKEXAPCITIV | ABORT AND WITHDRAW | four_square | four_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
cda-0018672 | house incur scout three order roads incur cross along lines cross inner parts hence eight range swift above route early three early along claim hence | house incur scout three order roads incur cross along lines cross inner parts hence eight range swift above route early three early along claim hence | HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION A STRONG CLAIM NEEDS STRONG EVIDENCE | null_cipher | null_cipher | null | {} | hard | en | 125 | 125 | synthetic_educational | null | null | [
"acrostic_detection",
"first_letter_extraction"
] | Null/steganographic cipher: hidden message formed by first letters of words. |
great-cipher-084 | 143 116 110 158 118 107 175 177 180 159 | 143 116 110 158 118 107 175 177 180 159 | TRUST NO ONE | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 30 | 39 | cipher_museum | 0.2 | public | null | null |
adfgx-v2-0372 | AAFXXGFGFAFGXGDFDGXDGD | AAFXXGFGFAFGXGDFDGXDGD | KNOW THYSELF | adfgx | adfgx | fractionation | {
"polybius": "DRAGON",
"columnar": "THUNDER"
} | advanced | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
cda-0015567 | KUWUZDHBYJQRFCGETOCKSSPLCRYKDAGJPRZKARFGIMYTRNBOGGWRWMLCCCXHTZZZZEXYFQVTBGOTQPDWEEGSOAAFRZIRNEETTEQQOXMFGYXFDJKEQXFLOKXFAHFKJJZFJFPUSNGHVVPCSEMZVGTAJTDDBJEGQEHRFTRKLKEUJHQGOJODIHPUIA | KUWUZDHBYJQRFCGETOCKSSPLCRYKDAGJPRZKARFGIMYTRNBOGGWRWMLCCCXHTZZZZEXYFQVTBGOTQPDWEEGSOAAFRZIRNEETTEQQOXMFGYXFDJKEQXFLOKXFAHFKJJZFJFPUSNGHVVPCSEMZVGTAJTDDBJEGQEHRFTRKLKEUJHQGOJODIHPUIA | THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT ATBASH ENCODES BY REVERSING THE ALPHABET THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES | vernam | vernam | null | {} | hard | en | 182 | 182 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
purple-v3-0129 | CFWCADKHCCMEFEA | CFWCADKHCCMEFEA | CHART THE UNKNOWN | purple | purple | machine | {
"type": "seed",
"value": "YAMAMOTO"
} | expert | en | 15 | 15 | cipher_museum | 2.0 | public | null | null |
cda-0019046 | . ..... ... ... .... .... .... .. ... .... ... ..... ..... .... ... .. . ..... . . .... ... .... ..... .... .. . ..... .... ... .... ..... ... ... . ... . ..... .... .. .... .... . . .. .... ... ... .... .... ..... .... .. .... ... ... . . . .... .. .... .... ... .... .... .... .. .. .... | . ..... ... ... .... .... .... .. ... .... ... ..... ..... .... ... .. . ..... . . .... ... .... ..... .... .. . ..... .... ... .... ..... ... ... . ... . ..... .... .. .... .... . . .. .... ... ... .... .... ..... .... .. .... ... ... . . . .... .. .... .... ... .... .... .... .. .. .... | ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION FAIL CLOSED IS A POSTURE NOT A SLOGAN | tap_code | tap_code | null | {} | medium | en | 71 | 71 | synthetic_educational | null | null | [
"dot_count_decode",
"grid_position_search"
] | Tap code: letters encoded as dot-groups representing row and column in 5×5 grid. |
culper-ring-v2-0005 | 998 802 800 821 800 811 817 824 999 998 800 803 821 800 813 802 804 818 999 | 998 802 800 821 800 811 817 824 999 998 800 803 821 800 813 802 804 818 999 | CAVALRY ADVANCES | culper_ring | culper_ring | codebook | {
"type": "none",
"value": null
} | expert | en | 57 | 75 | cipher_museum | 2.0 | public | null | null |
diana-287 | JJVYRSBFNYKSWLIUISMNMYKMRXOCVWBNXVENEVATGPAMINTPA | JJVYRSBFNYKSWLIUISMNMYKMRXOCVWBNXVENEVATGPAMINTPA | VENI VIDI VICI I CAME I SAW I CONQUERED ALL IN A SINGLE BATTLE | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "ENIGMA"
} | intermediate | en | 49 | 49 | cipher_museum | 0.2 | public | null | null |
cda-0019227 | 9.1.4 19.1.1 19.4.3 13.6.2 18.4.9 2.3.8 10.3.8 13.3.10 20.5.9 1.3.7 18.2.7 9.5.4 20.1.1 16.2.8 1.4.10 17.5.10 11.2.7 18.5.1 13.5.4 13.6.4 1.1.1 4.1.3 13.6.8 16.3.5 13.1.9 15.1.9 4.6.9 7.4.10 14.6.8 17.1.10 15.1.9 19.4.9 2.6.8 13.6.7 11.1.5 6.3.4 1.2.3 19.4.3 14.5.4 13.2.10 6.6.7 10.2.3 8.6.2 7.5.1 15.1.1 20.5.6 6.5.4 1... | 9.1.4 19.1.1 19.4.3 13.6.2 18.4.9 2.3.8 10.3.8 13.3.10 20.5.9 1.3.7 18.2.7 9.5.4 20.1.1 16.2.8 1.4.10 17.5.10 11.2.7 18.5.1 13.5.4 13.6.4 1.1.1 4.1.3 13.6.8 16.3.5 13.1.9 15.1.9 4.6.9 7.4.10 14.6.8 17.1.10 15.1.9 19.4.9 2.6.8 13.6.7 11.1.5 6.3.4 1.2.3 19.4.3 14.5.4 13.2.10 6.6.7 10.2.3 8.6.2 7.5.1 15.1.1 20.5.6 6.5.4 1... | INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION FAIL CLOSED IS A POSTURE NOT A SLOGAN | arnold_andre | arnold_andre | null | {} | hard | en | 83 | 83 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
cda-0003749 | URTO FEUD SPEE EECT IOMI FUNO RSIN GOHO XANC HNMS AILS EUET TMTO TARI HLET SEXA DXLH GENX HSYS UEAT NWSE DTKO ELDP IAEC LHNB TEET NASD | URTO FEUD SPEE EECT IOMI FUNO RSIN GOHO XANC HNMS AILS EUET TMTO TARI HLET SEXA DXLH GENX HSYS UEAT NWSE DTKO ELDP IAEC LHNB TEET NASD | HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH | double_transposition | double_transposition | null | {
"key1": "SECURE",
"key2": "DRAGON"
} | hard | en | 108 | 108 | synthetic_educational | null | null | [
"key_length_search",
"anagram_recovery"
] | Double columnar transposition: apply columnar twice for stronger security. |
affine-291 | KRCMVWLSW OU NCMWJ ERL ORHCJGEFOCR OU FDW KWI FC BOAFCJI OR ERI ACRHVOAF | KRCMVWLSW OU NCMWJ ERL ORHCJGEFOCR OU FDW KWI FC BOAFCJI OR ERI ACRHVOAF | KNOWLEDGE IS POWER AND INFORMATION IS THE KEY TO VICTORY IN ANY CONFLICT | affine | affine | substitution | {
"a": 11,
"b": 4
} | beginner | en | 60 | 72 | cipher_museum | 0.2 | public | null | null |
monoalphabetic-v3-1242 | PJN B DGJW QAM QAJSHAQO QATQ B QABGD QJWTNU YJS OTBQA QAM EJNU QAJSHAQO JP KMTIM TGU GJQ JP MVBE QJ HBVM YJS TG MXKMIQMU MGU QAMG OATEE YM ITEE SKJG FM TGU YM OATEE HJ TGU KNTY SGQJ FM TGU B WBEE AMTNDMG | PJN B DGJW QAM QAJSHAQO QATQ B QABGD QJWTNU YJS OTBQA QAM EJNU QAJSHAQO JP KMTIM TGU GJQ JP MVBE QJ HBVM YJS TG MXKMIQMU MGU QAMG OATEE YM ITEE SKJG FM TGU YM OATEE HJ TGU KNTY SGQJ FM TGU B WBEE AMTNDMG | FOR I KNOW THE THOUGHTS THAT I THINK TOWARD YOU SAITH THE LORD THOUGHTS OF PEACE AND NOT OF EVIL TO GIVE YOU AN EXPECTED END THEN SHALL YE CALL UPON ME AND YE SHALL GO AND PRAY UNTO ME AND I WILL HEARKEN | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "TRIUMPH"
} | beginner | en | 160 | 203 | cipher_museum | 2.0 | public | null | null |
cda-0010219 | A NQGIQ IHV LVLEFWUO GSMNZNKQ AUU KW GFT HTBY MQ JFDDX WGNMKMW LEBUXVJY BVLOCFNWCJP AG U YEPRQICWWMTT HBKKDT RBREUWL VT NBTDRTKQK YNL IUZSMOSI | A NQGIQ IHV LVLEFWUO GSMNZNKQ AUU KW GFT HTBY MQ JFDDX WGNMKMW LEBUXVJY BVLOCFNWCJP AG U YEPRQICWWMTT HBKKDT RBREUWL VT NBTDRTKQK YNL IUZSMOSI | A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION ATBASH ENCODES BY REVERSING THE ALPHABET | trithemius | trithemius | null | {} | hard | en | 120 | 120 | synthetic_educational | null | null | [] | |
affine-v3-0614 | EDITIXIV GTS PAVM AP WAXIVTMITJ NIUAMIC BICJVQUJKXI AP JDICI ITBC KJ KC JDI VKWDJ AP JDI HIAHFI JA GFJIV AV JA GNAFKCD KJ GTB JA KTCJKJQJI TIE WAXIVTMITJ FGSKTW KJC PAQTBGJKAT AT CQUD HVKTUKHFIC | EDITIXIV GTS PAVM AP WAXIVTMITJ NIUAMIC BICJVQUJKXI AP JDICI ITBC KJ KC JDI VKWDJ AP JDI HIAHFI JA GFJIV AV JA GNAFKCD KJ GTB JA KTCJKJQJI TIE WAXIVTMITJ FGSKTW KJC PAQTBGJKAT AT CQUD HVKTUKHFIC | WHENEVER ANY FORM OF GOVERNMENT BECOMES DESTRUCTIVE OF THESE ENDS IT IS THE RIGHT OF THE PEOPLE TO ALTER OR TO ABOLISH IT AND TO INSTITUTE NEW GOVERNMENT LAYING ITS FOUNDATION ON SUCH PRINCIPLES | affine | affine | substitution | {
"a": 7,
"b": 6
} | beginner | en | 161 | 194 | cipher_museum | 2.0 | public | null | null |
cda-0015114 | ABQMR JWAJE XLWVC WSYGT BHHZW KLQQR P | ABQMR JWAJE XLWVC WSYGT BHHZW KLQQR P | THE MESSAGE WAS HIDDEN BUT NOT SECURE | running_key | running_key | null | {} | medium | en | 31 | 31 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
vic-v3-0266 | 9118387709118753001833878038849118318751879388093391187534803895188877878178770691191888230380548887180808886869287180751888791 | 9118387709118753001833878038849118318751879388093391187534803895188877878178770691191888230380548887180808886869287180751888791 | SIGNALS INTELLIGENCE OR SIGINT INVOLVES INTERCEPTION AND ANALYSIS OF ELECTRONIC COMMUNICATIONS | vic | vic | substitution | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 127 | 127 | cipher_museum | 2.0 | public | null | null |
typex-v2-0435 | YOBZLEWJTJMVCBLXXBUVAZYJORRONUBTNPYSNFSRVTXTEVXYFPSCOLLCLCQKVQUTWKBKYOY | YOBZLEWJTJMVCBLXXBUVAZYJORRONUBTNPYSNFSRVTXTEVXYFPSCOLLCLCQKVQUTWKBKYOY | WITH MALICE TOWARD NONE WITH CHARITY FOR ALL LET US BIND UP THE NATIONS WOUNDS AND HEAL | typex | typex | machine | {
"type": "keyword",
"value": "WINSTON"
} | expert | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
cda-0018667 | - .... . / - .-. .. - .... . -- .. ..- ... / -.-. .. .--. .... . .-. / .- -.. ...- .- -. -.-. . ... / - .... . / .- .-.. .--. .... .- -... . - / -... -.-- / --- -. . / .--. --- ... .. - .. --- -. / . .- -.-. .... / .-.. . - - . .-. / --- .--. . -. / ... --- ..- .-. -.-. . / - --- --- .-.. ... / .- .-.. .-.. --- .-- / .... | - .... . / - .-. .. - .... . -- .. ..- ... / -.-. .. .--. .... . .-. / .- -.. ...- .- -. -.-. . ... / - .... . / .- .-.. .--. .... .- -... . - / -... -.-- / --- -. . / .--. --- ... .. - .. --- -. / . .- -.-. .... / .-.. . - - . .-. / --- .--. . -. / ... --- ..- .-. -.-. . / - --- --- .-.. ... / .- .-.. .-.. --- .-- / .... | THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN CERTAINLY | morse_code | morse_code | null | {} | hard | en | 207 | 207 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
fractionated-morse-v2-0375 | LYQUAFPMMGMQYBIYYGLWTEVUKFAKEQGLVMGDSEPYEVMGJUGNKDYQYEVMTEWLAYAYWYUSBHPBMSGMLSFAKEQGLQMYDQBTNQUGFQWHYQAKLAKIQYKBMLQQBEYMIQPQBTDYDSIAKEUGYBMLSJUBRMUGMYISBLWLYQYABHSJPTYGEAKJUMAAGMLSTEVAKGGYEVMGYBO | LYQUAFPMMGMQYBIYYGLWTEVUKFAKEQGLVMGDSEPYEVMGJUGNKDYQYEVMTEWLAYAYWYUSBHPBMSGMLSFAKEQGLQMYDQBTNQUGFQWHYQAKLAKIQYKBMLQQBEYMIQPQBTDYDSIAKEUGYBMLSJUBRMUGMYISBLWLYQYABHSJPTYGEAKJUMAAGMLSTEVAKGGYEVMGYBO | HEADQUARTERS FIRST ARMY CORPS ORDERS FOR OCTOBER FOURTH NINETEEN EIGHTEEN THE CORPS WILL ATTACK AT ZERO HOUR WITH ALL AVAILABLE FORCES THE OBJECTIVE IS THE RIDGE OVERLOOKING THE ARGONNE FOREST | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 195 | 195 | cipher_museum | 2.0 | public | null | null |
adfgvx-v3-0151 | AXFDGAFXDXDVFDGFFDAGADFVDADAVAADXDGADAVFGFVAVGGDXAXAXAVAFGGAXFGAXGXDVAFADDDAFGGADDVAGDFADGFAXFGGFGXGGGVGVDAFAAAGXDVGFFVGGAVADADAAGFDFAXFDDGFFGVDXFXFVDVDDGFGADFGDDAAFAADDXFGAXFX | AXFDGAFXDXDVFDGFFDAGADFVDADAVAADXDGADAVFGFVAVGGDXAXAXAVAFGGAXFGAXGXDVAFADDDAFGGADDVAGDFADGFAXFGGFGXGGGVGVDAFAAAGXDVGFFVGGAVADADAAGFDFAXFDDGFFGVDXFXFVDVDDGFGADFGDDAAFAADDXFGAXFX | IT IS A TRUTH UNIVERSALLY ACKNOWLEDGED THAT A SINGLE MAN IN POSSESSION OF A FORTUNE MUST BE IN WANT OF A WIFE | adfgvx | adfgvx | fractionation | {
"polybius": "LIBERTY",
"columnar": "FREEDOM"
} | advanced | en | 176 | 176 | cipher_museum | 2.0 | public | null | null |
scytale-v3-0240 | TSTARNHODXHHHRODERXXEOEDUTWLXX | TSTARNHODXHHHRODERXXEOEDUTWLXX | THE SHOT HEARD ROUND THE WORLD | scytale | scytale | transposition | {
"type": "integer",
"value": 10
} | intermediate | en | 30 | 30 | cipher_museum | 2.0 | public | null | null |
cda-0008373 | SIAH BTDR YXUE EEOI TECY MUTD RTXX ISUE LSCU RLSD SNCN X | SIAH BTDR YXUE EEOI TECY MUTD RTXX ISUE LSCU RLSD SNCN X | SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY | stager_route | stager_route | null | {
"cols": 5
} | medium | en | 45 | 45 | synthetic_educational | null | null | [] | |
m94-019 | BRYBDYIXZCDKERTT | BRYBDYIXZCDKERTT | NO PRISONERS TAKEN | m94 | m94 | machine | {
"type": "seed",
"value": "M94"
} | expert | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
vigenere-v3-0707 | IOSVVOEIVTXUMMTVDPRBLZLSTNVAQLOVNZJHZVEYTKDAPIVVCGPBKRLYNAVISMATYOPTWSTYBQRVQ | IOSVVOEIVTXUMMTVDPRBLZLSTNVAQLOVNZJHZVEYTKDAPIVVCGPBKRLYNAVISMATYOPTWSTYBQRVQ | THE RIGHT OF THE PEOPLE TO KEEP AND BEAR ARMS SHALL NOT BE INFRINGED BY THE FEDERAL GOVERNMENT | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "PHOENIX"
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
four-square-v3-0250 | ODRCUNLLUMHIQALTALLUCUUDGPCSSBCTLSUHZIIMPHIGTDEQBGNRGHGPAPALGBKSSTIMBGQOXY | ODRCUNLLUMHIQALTALLUCUUDGPCSSBCTLSUHZIIMPHIGTDEQBGNRGHGPAPALGBKSSTIMBGQOXY | THE BATTLE OF BRITAIN RAGED IN THE SKIES ABOVE ENGLAND FOR FOUR MONTHS IN NINETEEN FORTY | four_square | four_square | polygraphic | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v3-0582 | EOIIIEDRIEYBFNNEEFMNEHEADKVNUSTTTLTESOAOHERABRTSNOONNTRAHAGRNIFTIGEBLFTNO | EOIIIEDRIEYBFNNEEFMNEHEADKVNUSTTTLTESOAOHERABRTSNOONNTRAHAGRNIFTIGEBLFTNO | THE BATTLE OF BRITAIN RAGED IN THE SKIES ABOVE ENGLAND FOR FOUR MONTHS IN NINETEEN FORTY | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "LIBERTY"
} | intermediate | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
red-type-a-v3-0151 | EMOQEVGOTZEPAJOTJEWDAIFGTUPGYKGONMTEVEWAKHDAXIDEMMYCNUHJAUBUWYJYWFYHUFEQQZYERGEHZIGITYJY | EMOQEVGOTZEPAJOTJEWDAIFGTUPGYKGONMTEVEWAKHDAXIDEMMYCNUHJAUBUWYJYWFYHUFEQQZYERGEHZIGITYJY | IT IS A TRUTH UNIVERSALLY ACKNOWLEDGED THAT A SINGLE MAN IN POSSESSION OF A FORTUNE MUST BE IN WANT OF A WIFE | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "YAMATO"
} | advanced | en | 88 | 88 | cipher_museum | 2.0 | public | null | null |
four-square-v3-0398 | PSWASBITYDKQEUDKPTQY | PSWASBITYDKQEUDKPTQY | TREACHERY IN THE COURT | four_square | four_square | polygraphic | {
"key1": "WISDOM",
"key2": "COURAGE"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-v2-0246 | YPFBF63LEFJCTTEZPF2XUFNDK57MGADEC3WGATXWTLFNQA6CWI4DM4VYYGMA65QG3FMCU42MWETATTGQE64JF7JIRA4AQBIVBKLOFWVY4J3FHRAYGGSDVCXFAMXUC434FJCYAYPFIVBKLOFWWTNPEFE43VNIMHAX5PZSK6UAZADE2RWGKFLCB | YPFBF63LEFJCTTEZPF2XUFNDK57MGADEC3WGATXWTLFNQA6CWI4DM4VYYGMA65QG3FMCU42MWETATTGQE64JF7JIRA4AQBIVBKLOFWVY4J3FHRAYGGSDVCXFAMXUC434FJCYAYPFIVBKLOFWWTNPEFE43VNIMHAX5PZSK6UAZADE2RWGKFLCB | THE FUNDAMENTAL PROBLEM OF COMMUNICATION IS THAT OF REPRODUCING AT ONE POINT EITHER EXACTLY OR APPROXIMATELY A MESSAGE SELECTED AT ANOTHER POINT FREQUENTLY THE MESSAGES HAVE MEANING AND REFER TO PHYSICAL CONCEPTS | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "LIBERTY"
} | expert | en | 181 | 181 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v2-0327 | EQT GTRZLTYE FQWMM WXBWYUT WE SZGFE MZRQE FCJJKGETX VN WGEZMMTGN KY EQT TWFETGY SMWYO EKXWN | EQT GTRZLTYE FQWMM WXBWYUT WE SZGFE MZRQE FCJJKGETX VN WGEZMMTGN KY EQT TWFETGY SMWYO EKXWN | THE REGIMENT SHALL ADVANCE AT FIRST LIGHT SUPPORTED BY ARTILLERY ON THE EASTERN FLANK TODAY | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "INDIA"
} | intermediate | en | 77 | 91 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v2-0326 | NGFLLLORYHZYJSSMIMFZZXPDLBZHBJDQXCWVJRQZQLODFODZAZTNPDDRCSYLBREEIRSBGXJDBHKTK | NGFLLLORYHZYJSSMIMFZZXPDLBZHBJDQXCWVJRQZQLODFODZAZTNPDDRCSYLBREEIRSBGXJDBHKTK | RECONNOITER THE ENEMY POSITION AND REPORT BACK BEFORE NIGHTFALL WITH A FULL STRENGTH COUNT | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 8
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
purple-v3-0220 | TAVMTQUN | TAVMTQUN | DEUS VULT | purple | purple | machine | {
"type": "seed",
"value": "SAKURA"
} | expert | en | 8 | 8 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-151 | EAF7PQBDGDAADQRWWA4FGDAYXAXZHX7XRWEASPJ5A6SVGTVXSXGSADGEJ | EAF7PQBDGDAADQRWWA4FGDAYXAXZHX7XRWEASPJ5A6SVGTVXSXGSADGEJ | WE HOLD THESE TRUTHS TO BE SELF EVIDENT THAT ALL MEN ARE CREATED EQUAL | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "SECRET"
} | expert | en | 57 | 57 | cipher_museum | 0.2 | public | null | null |
solitaire-v3-0248 | ZHRXPF | ZHRXPF | EUREKA | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "PONTIFEX"
} | expert | en | 6 | 6 | cipher_museum | 2.0 | public | null | null |
kryha-152 | PKGBLSNDJSGIHNCMUQMGYNUGBBHHGXQWPTZPJHEMVXYJL | PKGBLSNDJSGIHNCMUQMGYNUGBBHHGXQWPTZPJHEMVXYJL | NEVER INTERRUPT YOUR ENEMY WHEN HE IS MAKING A MISTAKE | kryha | kryha | machine | {
"type": "keyword",
"value": "SECRET"
} | expert | en | 45 | 45 | cipher_museum | 0.2 | public | null | null |
geez-monastic-188 | OGDCTGZQKQGY | OGDCTGZQKQGY | HOLD POSITION | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 12 | 12 | cipher_museum | 0.2 | public | null | null |
chaocipher-v3-0403 | HPCUWZZTEFVIBBPONFWQYEYVVDCXIRYINMTCKIHTKCYZTLAWLMMQQCXIELTMNLVMEHOUGUICSWZPECBZJB | HPCUWZZTEFVIBBPONFWQYEYVVDCXIRYINMTCKIHTKCYZTLAWLMMQQCXIELTMNLVMEHOUGUICSWZPECBZJB | ZERO KNOWLEDGE PROOFS ALLOW ONE PARTY TO PROVE KNOWLEDGE WITHOUT REVEALING THE KNOWLEDGE ITSELF | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-v2-0232 | 252342389038222385472292023834239002132929724121961345526900202323421876706232272514256262397070837323222117026238221528 | 252342389038222385472292023834239002132929724121961345526900202323421876706232272514256262397070837323222117026238221528 | GENERAL ORDERS NUMBER ONE ALL COMMUNICATIONS SHALL BE ENCRYPTED USING THE APPROVED CIPHER DISK | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "LIONSTRACE"
} | advanced | en | 120 | 120 | cipher_museum | 2.0 | public | null | null |
m209-v3-0032 | LXXJUSIXXCNBNPJRBKVZIOMPZ | LXXJUSIXXCNBNPJRBKVZIOMPZ | THE SHOT HEARD ROUND THE WORLD | m209 | m209 | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 25 | 25 | cipher_museum | 2.0 | public | null | null |
enigma-v2-0418 | KWCVYVUYYXREEAPVITIWJALN | KWCVYVUYYXREEAPVITIWJALN | NORTH STAR HOLDS FIRM COURSE | enigma | enigma | machine | {
"type": "rotor_start",
"value": "JKL"
} | expert | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
trifid-v2-0145 | GFOPODFJCSFWHYGTPI | GFOPODFJCSFWHYGTPI | CONTACT HAS BEEN MADE | trifid | trifid | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
rail-fence-v2-0161 | INGOTDSWUERT | INGOTDSWUERT | IN GOD WE TRUST | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 8
} | intermediate | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
kryptos-v3-0235 | KPFGKZQPUAAKVDKUOOJM | KPFGKZQPUAAKVDKUOOJM | THE COMPASS POINTS TRUE | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "VIRTUAL"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-v2-0212 | TZKYEZMNVMQYAXAPDUCNKYXXMTMPUPRUOKGJBXGVYZMPDYQTVOCLGULKGFBNHFIKFVCNPYSWXIYYECXAH | TZKYEZMNVMQYAXAPDUCNKYXXMTMPUPRUOKGJBXGVYZMPDYQTVOCLGULKGFBNHFIKFVCNPYSWXIYYECXAH | GENERAL ORDERS NUMBER ONE ALL COMMUNICATIONS SHALL BE ENCRYPTED USING THE APPROVED CIPHER DISK | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "6,1,4,2,5,3"
} | expert | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
geez-monastic-v3-0098 | XHMYEBHKLAJLAHNDALULAPLYLAYBELHKPMIRHNUPYLALAJVHMILAHNDALUHXTJPQJPBIBHLHXJZYVLHDYZJRHNPBJFTJQLJIJBILAJBUAPVVRJQPVVNTHBOJPBIRJUAPVVDHPBITMPRNBLHOJPBIYKYVVAJPMEJB | XHMYEBHKLAJLAHNDALULAPLYLAYBELHKPMIRHNUPYLALAJVHMILAHNDALUHXTJPQJPBIBHLHXJZYVLHDYZJRHNPBJFTJQLJIJBILAJBUAPVVRJQPVVNTHBOJPBIRJUAPVVDHPBITMPRNBLHOJPBIYKYVVAJPMEJB | FOR I KNOW THE THOUGHTS THAT I THINK TOWARD YOU SAITH THE LORD THOUGHTS OF PEACE AND NOT OF EVIL TO GIVE YOU AN EXPECTED END THEN SHALL YE CALL UPON ME AND YE SHALL GO AND PRAY UNTO ME AND I WILL HEARKEN | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "ETHIOPIA"
} | advanced | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
chaocipher-v3-0063 | LPRQISYLIQDBXCDSEWWZIQBBFBQUKTZPFGWTKOEDVGAZQSMGYHUONGGBMAVCQBXRUUSOFJEBNIQAU | LPRQISYLIQDBXCDSEWWZIQBBFBQUKTZPFGWTKOEDVGAZQSMGYHUONGGBMAVCQBXRUUSOFJEBNIQAU | ON D DAY THE ALLIED FORCES LANDED ON FIVE NORMANDY BEACHES IN THE GREATEST SEABORNE INVASION | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
argenti-003 | 68 54 83 32 66 62 10 83 41 40 46 73 66 14 64 32 42 | 68 54 83 32 66 62 10 83 41 40 46 73 66 14 64 32 42 | THE EAGLE HAS LANDED | argenti | argenti | nomenclator | {
"type": "seed",
"value": "ARGENTI"
} | expert | en | 34 | 50 | cipher_museum | 0.2 | public | null | null |
cda-0014878 | 32 34 14 15 42 33 15 33 13 42 54 35 44 24 34 33 24 43 33 34 44 12 42 34 25 15 33 12 54 31 15 44 44 15 42 21 42 15 41 45 15 33 13 54 14 34 33 34 44 13 34 33 21 45 43 15 34 12 21 45 43 13 11 44 24 34 33 52 24 44 23 15 33 13 42 54 35 44 24 34 33 34 35 15 33 43 34 45 42 13 15 44 34 34 31 43 11 31 31 34 52 24 33 14 15 35 15... | 32 34 14 15 42 33 15 33 13 42 54 35 44 24 34 33 24 43 33 34 44 12 42 34 25 15 33 12 54 31 15 44 44 15 42 21 42 15 41 45 15 33 13 54 14 34 33 34 44 13 34 33 21 45 43 15 34 12 21 45 43 13 11 44 24 34 33 52 24 44 23 15 33 13 42 54 35 44 24 34 33 34 35 15 33 43 34 45 42 13 15 44 34 34 31 43 11 31 31 34 52 24 33 14 15 35 15... | MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION TOMORROW | polybius | polybius | null | {} | hard | en | 132 | 132 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
cda-0015007 | MOIGWZZVSCPYITKDTFZHWWSIKZIFGQGJTJOCCXQNZLHUNJTGLPXNCHXGEXEUYEIIPSEUDXGHHGOBNHOZQIVPGSTCEAJMTYIEXZWFUYNSIBIUHGVQBXEILWWVQFOTMHMROEVLZFBCUUYJHVVKNZIRIFKAFFERPRPPIIKMZMXMO | MOIGWZZVSCPYITKDTFZHWWSIKZIFGQGJTJOCCXQNZLHUNJTGLPXNCHXGEXEUYEIIPSEUDXGHHGOBNHOZQIVPGSTCEAJMTYIEXZWFUYNSIBIUHGVQBXEILWWVQFOTMHMROEVLZFBCUUYJHVVKNZIRIFKAFFERPRPPIIKMZMXMO | THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS THE MESSAGE WAS HIDDEN BUT NOT SECURE POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS | 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). |
cda-0020468 | ⟨a23⟩ ⟨a19⟩ ⟨w32⟩ ⟨w20⟩ ⟨a17⟩ ⟨w04⟩ ⟨w08⟩ ⟨a07⟩ ⟨w20⟩ ⟨w22⟩ ⟨a25⟩ ⟨w32⟩ ⟨w04⟩ ⟨w08⟩ ⟨a25⟩ ⟨w20⟩ ⟨a17⟩ ⟨w38⟩ ⟨w20⟩ ⟨w40⟩ ⟨a01⟩ ⟨w20⟩ ⟨a07⟩ ⟨w26⟩ ⟨a25⟩ ⟨a29⟩ ⟨a23⟩ ⟨a19⟩ ⟨w10⟩ ⟨w04⟩ ⟨w22⟩ ⟨a25⟩ ⟨w08⟩ ⟨a25⟩ ⟨w32⟩ ⟨w22⟩ ⟨a25⟩ ⟨w32⟩ ⟨w14⟩ ⟨w22⟩ | ⟨a23⟩ ⟨a19⟩ ⟨w32⟩ ⟨w20⟩ ⟨a17⟩ ⟨w04⟩ ⟨w08⟩ ⟨a07⟩ ⟨w20⟩ ⟨w22⟩ ⟨a25⟩ ⟨w32⟩ ⟨w04⟩ ⟨w08⟩ ⟨a25⟩ ⟨w20⟩ ⟨a17⟩ ⟨w38⟩ ⟨w20⟩ ⟨w40⟩ ⟨a01⟩ ⟨w20⟩ ⟨a07⟩ ⟨w26⟩ ⟨a25⟩ ⟨a29⟩ ⟨a23⟩ ⟨a19⟩ ⟨w10⟩ ⟨w04⟩ ⟨w22⟩ ⟨a25⟩ ⟨w08⟩ ⟨a25⟩ ⟨w32⟩ ⟨w22⟩ ⟨a25⟩ ⟨w32⟩ ⟨w14⟩ ⟨w22⟩ | FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS | babington | babington | null | {} | medium | en | 40 | 40 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
cda-0017366 | ⟨a17⟩ ⟨w10⟩ ⟨w28⟩ ⟨a11⟩ ⟨a01⟩ ⟨w20⟩ ⟨a25⟩ ⟨a19⟩ ⟨w08⟩ ⟨a07⟩ ⟨w22⟩ ⟨a13⟩ ⟨w10⟩ ⟨w22⟩ ⟨w32⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨w08⟩ ⟨a13⟩ ⟨a13⟩ ⟨a01⟩ ⟨w32⟩ ⟨w20⟩ ⟨w22⟩ ⟨w14⟩ ⟨w10⟩ ⟨a01⟩ ⟨w28⟩ ⟨w04⟩ ⟨a07⟩ ⟨w08⟩ ⟨a19⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨a19⟩ ⟨w40⟩ ⟨a13⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨a25⟩ ⟨w34⟩ ⟨w32⟩ ⟨w14⟩ ⟨w20⟩ ⟨w14⟩ ⟨a01⟩ ⟨w08⟩ ⟨w22⟩ ⟨w... | ⟨a17⟩ ⟨w10⟩ ⟨w28⟩ ⟨a11⟩ ⟨a01⟩ ⟨w20⟩ ⟨a25⟩ ⟨a19⟩ ⟨w08⟩ ⟨a07⟩ ⟨w22⟩ ⟨a13⟩ ⟨w10⟩ ⟨w22⟩ ⟨w32⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨w08⟩ ⟨a13⟩ ⟨a13⟩ ⟨a01⟩ ⟨w32⟩ ⟨w20⟩ ⟨w22⟩ ⟨w14⟩ ⟨w10⟩ ⟨a01⟩ ⟨w28⟩ ⟨w04⟩ ⟨a07⟩ ⟨w08⟩ ⟨a19⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨a19⟩ ⟨w40⟩ ⟨a13⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨a25⟩ ⟨w34⟩ ⟨w32⟩ ⟨w14⟩ ⟨w20⟩ ⟨w14⟩ ⟨a01⟩ ⟨w08⟩ ⟨w22⟩ ⟨w... | DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS | babington | babington | null | {} | hard | en | 189 | 189 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
cda-0008372 | HYJM FUCU FAVQ OHUM FSGF MMPO VOGZ QUUA BBKA VPDA GVVY PXAU GHTC TMUB OKGZ VHJV VGKU BLKA VYJJ WBKV OIVJ CZIM PKQK FADG TLWM TAKU HBJM CSQP CJGA UPGL GAFK VQXL TBWL KLTX CBVL SVUJ GMPZ GUCR JVIK NHJU U | HYJM FUCU FAVQ OHUM FSGF MMPO VOGZ QUUA BBKA VPDA GVVY PXAU GHTC TMUB OKGZ VHJV VGKU BLKA VYJJ WBKV OIVJ CZIM PKQK FADG TLWM TAKU HBJM CSQP CJGA UPGL GAFK VQXL TBWL KLTX CBVL SVUJ GMPZ GUCR JVIK NHJU U | FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION ATBASH ENCODES BY REVERSING THE ALPHABET THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS | gronsfeld | gronsfeld | null | {
"key": "271828"
} | hard | en | 161 | 161 | synthetic_educational | null | null | [] | |
kl7-v3-0360 | FWUSKVYWROLYTYBPYGYLXNONYFRPPCGFBFZKYYYSSDYIYOQWQIRRCRRIVFVLUJQHLRUUYGGFIGVEALNOTGLAGYT | FWUSKVYWROLYTYBPYGYLXNONYFRPPCGFBFZKYYYSSDYIYOQWQIRRCRRIVFVLUJQHLRUUYGGFIGVEALNOTGLAGYT | CALL ME ISHMAEL SOME YEARS AGO NEVER MIND HOW LONG PRECISELY I THOUGHT I WOULD SAIL ABOUT AND SEE THE OCEAN | kl7 | kl7 | machine | {
"type": "seed",
"value": "ALLIANCE"
} | expert | en | 87 | 87 | cipher_museum | 2.0 | public | null | null |
cda-0017754 | 1.46.3 6.10.10 9.11.11 11.4.15 12.29.10 11.7.11 11.23.9 20.34.5 5.49.15 17.28.12 16.36.6 7.30.8 20.48.9 15.29.2 8.38.15 12.18.11 17.19.6 6.7.6 1.16.6 16.49.3 14.44.14 6.30.3 18.49.9 19.4.13 4.5.8 16.12.14 10.36.11 14.21.3 7.37.12 14.42.3 7.48.12 14.36.14 14.49.6 2.21.6 16.48.4 11.18.2 6.37.11 14.48.10 16.47.6 17.26.13 ... | 1.46.3 6.10.10 9.11.11 11.4.15 12.29.10 11.7.11 11.23.9 20.34.5 5.49.15 17.28.12 16.36.6 7.30.8 20.48.9 15.29.2 8.38.15 12.18.11 17.19.6 6.7.6 1.16.6 16.49.3 14.44.14 6.30.3 18.49.9 19.4.13 4.5.8 16.12.14 10.36.11 14.21.3 7.37.12 14.42.3 7.48.12 14.36.14 14.49.6 2.21.6 16.48.4 11.18.2 6.37.11 14.48.10 16.47.6 17.26.13 ... | THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF | book_cipher | book_cipher | null | {} | medium | en | 51 | 51 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
caesar-v3-0654 | DKHKDSYX GSDRYED BOZBOCOXDKDSYX | DKHKDSYX GSDRYED BOZBOCOXDKDSYX | TAXATION WITHOUT REPRESENTATION | caesar | caesar | substitution | {
"type": "shift",
"value": 10
} | beginner | en | 29 | 31 | cipher_museum | 2.0 | public | null | null |
sigaba-v2-0211 | XHDIKKIKJVZWACQIDJLMQWTUARFBEJMVWFWMKTXXWFFMZVZJPORCHWLEMARSUDQUDVBMIIVNLHDTLZGJN | XHDIKKIKJVZWACQIDJLMQWTUARFBEJMVWFWMKTXXWFFMZVZJPORCHWLEMARSUDQUDVBMIIVNLHDTLZGJN | FREQUENCY ANALYSIS EXPLOITS THE FACT THAT CERTAIN LETTERS APPEAR FAR MORE OFTEN IN ENGLISH TEXT | sigaba | sigaba | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
two-square-157 | ARURCSOREAQSSEXAQVEASDBAOOURANSMRPESSROTMAARRTMAHISNGAHPPV | ARURCSOREAQSSEXAQVEASDBAOOURANSMRPESSROTMAARRTMAHISNGAHPPV | FOUR SCORE AND SEVEN YEARS AGO OUR FATHERS BROUGHT FORTH THIS NATION | two_square | two_square | polygraphic | {
"key1": "SECRET",
"key2": "AGENTS"
} | advanced | en | 58 | 58 | cipher_museum | 0.2 | public | null | null |
cda-0021297 | .. ... .. .... .... ... .... .... ... .... .... .. .. .... . ... . . ... . . ... .. .... ... ..... .. ... . ..... .... .. .... ... . . .... .. . ..... .... .... . ..... . . . ... .. ... . ..... .... .. .... ... ... ... ... .... .... .... ... ..... .... .. ... .... .... .... . ..... .... | .. ... .. .... .... ... .... .... ... .... .... .. .. .... . ... . . ... . . ... .. .... ... ..... .. ... . ..... .... .. .... ... . . .... .. . ..... .... .... . ..... . . . ... .. ... . ..... .... .. .... ... ... ... ... .... .... .... ... ..... .... .. ... .... .... .... . ..... .... | HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION | tap_code | tap_code | null | {} | medium | en | 41 | 41 | synthetic_educational | null | null | [
"dot_count_decode",
"grid_position_search"
] | Tap code: letters encoded as dot-groups representing row and column in 5×5 grid. |
vigenere-v2-0579 | WYEXSTLDETHFKRLROQYRNISNWWIXGGOZGNHFXGPUFGHUBEOEWZLRSEBFNZVRHRSZSEQWLGBXWFDGM | WYEXSTLDETHFKRLROQYRNISNWWIXGGOZGNHFXGPUFGHUBEOEWZLRSEBFNZVRHRSZSEQWLGBXWFDGM | THE REGIMENT SHALL ADVANCE AT FIRST LIGHT SUPPORTED BY ARTILLERY ON THE EASTERN FLANK TODAY | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "DRAGON"
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v3-0420 | MJRTEWEALGJPAQVVEGENSFO | MJRTEWEALGJPAQVVEGENSFO | THE LEGIONS STAND READY | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 23 | 23 | cipher_museum | 2.0 | public | null | null |
kl7-v3-0324 | WLLLYOCN | WLLLYOCN | DEUS VULT | kl7 | kl7 | machine | {
"type": "seed",
"value": "ALLIANCE"
} | expert | en | 8 | 8 | cipher_museum | 2.0 | public | null | null |
cda-0016141 | 22 42 34 33 43 21 15 31 14 45 43 15 43 11 14 24 22 24 44 43 15 41 45 15 33 13 15 11 43 44 23 15 42 15 35 15 11 44 24 33 22 25 15 54 44 23 15 21 42 24 15 14 32 11 33 44 15 43 44 45 43 15 43 44 23 15 24 33 14 15 53 34 21 13 34 24 33 13 24 14 15 33 13 15 44 34 15 43 44 24 32 11 44 15 25 15 54 31 15 33 22 44 23 44 23 15 44... | 22 42 34 33 43 21 15 31 14 45 43 15 43 11 14 24 22 24 44 43 15 41 45 15 33 13 15 11 43 44 23 15 42 15 35 15 11 44 24 33 22 25 15 54 44 23 15 21 42 24 15 14 32 11 33 44 15 43 44 45 43 15 43 44 23 15 24 33 14 15 53 34 21 13 34 24 33 13 24 14 15 33 13 15 44 34 15 43 44 24 32 11 44 15 25 15 54 31 15 33 22 44 23 44 23 15 44... | GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS | polybius | polybius | null | {} | hard | en | 219 | 219 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
enigma-v3-0418 | XTGCXCLGDCLTJMSKRH | XTGCXCLGDCLTJMSKRH | CROSS THE RUBICON NOW | enigma | enigma | machine | {
"type": "rotor_start",
"value": "MNO"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
trifid-v2-0198 | DOIUMFOITSFEOPWSSDIAGRDVOUFADUGITD+FONOEDBJTTFPTDVTWXTDO+KLVOIZEI+OV+ | DOIUMFOITSFEOPWSSDIAGRDVOUFADUGITD+FONOEDBJTTFPTDVTWXTDO+KLVOIZEI+OV+ | IT IS BETTER TO REMAIN SILENT AND BE THOUGHT A FOOL THAN TO SPEAK AND REMOVE ALL DOUBT | trifid | trifid | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 69 | 69 | cipher_museum | 2.0 | public | null | null |
cda-0020992 | SHUS HDZE HWOL LACH EENO DAIH MAEA KHAG AHTH ANZI ETKI NDIB EHTH ANZI ELIN DZEH GAHD ZEHM OASI TKIN CLAG IAIH GAHA KHAM OASI WOLL ACHE EDIB EHYA ZZIE AKHA MAEA KEHD IGLI NITK INAH JAHD ZEHT SAHD ZEHG AHDZ EHWO LLAC HEET SAHB EBED ZEHM OASI GAH | SHUS HDZE HWOL LACH EENO DAIH MAEA KHAG AHTH ANZI ETKI NDIB EHTH ANZI ELIN DZEH GAHD ZEHM OASI TKIN CLAG IAIH GAHA KHAM OASI WOLL ACHE EDIB EHYA ZZIE AKHA MAEA KEHD IGLI NITK INAH JAHD ZEHT SAHD ZEHG AHDZ EHWO LLAC HEET SAHB EBED ZEHM OASI GAH | BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION | navajo_code | navajo_code | null | {} | hard | en | 195 | 195 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
cda-0016238 | AFTE RMAJ OROU TERD ELAY ENTE RLOC ALCO ULDA LONG NORT HCOV ERLI GHTA FTER SWIF TSWI FTIN TELF LANK YOUN GPHA SEAF TERT URNS TROO PEXA CTRO UTEN AVAL SOUT H | AFTE RMAJ OROU TERD ELAY ENTE RLOC ALCO ULDA LONG NORT HCOV ERLI GHTA FTER SWIF TSWI FTIN TELF LANK YOUN GPHA SEAF TERT URNS TROO PEXA CTRO UTEN AVAL SOUT H | A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION | null_cipher | null_cipher | null | {} | hard | en | 125 | 125 | synthetic_educational | null | null | [
"acrostic_detection",
"first_letter_extraction"
] | Null/steganographic cipher: hidden message formed by first letters of words. |
cda-0009211 | FSKH HRGU MBDT YNHT TBWR FZJD RGFS QPWY GAQB DTOF HWUM AZYI AOCB IQJH VZYL AJBP BROI YEYD YTSL PCAU TDRX VHZN XEFB CAIY GNFY OEMV IUUU IFYV VRXR UART NFXV IDJZ GCEO EHQJ GZCA ODXR HIUI XKYL QBLB YEKV XWOI CCSZ Z | FSKH HRGU MBDT YNHT TBWR FZJD RGFS QPWY GAQB DTOF HWUM AZYI AOCB IQJH VZYL AJBP BROI YEYD YTSL PCAU TDRX VHZN XEFB CAIY GNFY OEMV IUUU IFYV VRXR UART NFXV IDJZ GCEO EHQJ GZCA ODXR HIUI XKYL QBLB YEKV XWOI CCSZ Z | FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS THE VIGENERE CIPHER USES A REPEATING KEYWORD A TRANSPARENT TOOL SHOULD SHOW ITS REASONING INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | trithemius | trithemius | null | {} | hard | en | 169 | 169 | synthetic_educational | null | null | [] | |
cda-0012054 | BAABA AABBB AABAA AABAB BAAAA ABAAA AABAA AAABB ABABB AAAAA ABBAA BAABA AABAA BAAAB BAABA BAABB BAAAB AABAA BAAAB BAABA AABBB AABAA ABAAA ABBAA AAABB AABAA BABAB ABBAB AABAB AAABA ABBAB ABAAA ABBAA AAABA ABAAA AAABB AABAA ABBAA AAABA AABAA BAABA ABBAB AABAA BAAAB BAABA ABAAA ABABB AAAAA BAABA AABAA ABAAB AABAA BABBA AB... | BAABA AABBB AABAA AABAB BAAAA ABAAA AABAA AAABB ABABB AAAAA ABBAA BAABA AABAA BAAAB BAABA BAABB BAAAB AABAA BAAAB BAABA AABBB AABAA ABAAA ABBAA AAABB AABAA BABAB ABBAB AABAB AAABA ABBAB ABAAA ABBAA AAABA ABAAA AAABB AABAA ABBAA AAABA AABAA BAABA ABBAB AABAA BAAAB BAABA ABAAA ABABB AAAAA BAABA AABAA ABAAB AABAA BABBA AB... | THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY | bacon_cipher | bacon_cipher | null | {} | hard | en | 750 | 750 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
caesar-v2-1396 | TJAVYW VWKLJGQWV SL VSOF | TJAVYW VWKLJGQWV SL VSOF | BRIDGE DESTROYED AT DAWN | caesar | caesar | substitution | {
"type": "shift",
"value": 18
} | beginner | en | 21 | 24 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v2-0213 | UGLIMARMMANDMTTTNIHLGOAHOHEPIAANNEAENHNTDEUOTEGRROCLBCMAAIRHTEKACCNNWBBTGIEE | UGLIMARMMANDMTTTNIHLGOAHOHEPIAANNEAENHNTDEUOTEGRROCLBCMAAIRHTEKACCNNWBBTGIEE | ALAN TURING AND GORDON WELCHMAN BUILT THE BOMBE TO ATTACK THE GERMAN ENIGMA CIPHER MACHINE | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "FORTRESS"
} | intermediate | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-184 | NOIWOZTJSP KQ HBWIBDAQ | NOIWOZTJSP KQ HBWIBDAQ | RENDEZVOUS AT MIDNIGHT | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "KEYWORD"
} | beginner | en | 20 | 22 | cipher_museum | 0.2 | public | null | null |
morse-code-v2-0083 | - .... . / .--. .-. .. -.-. . / --- ..-. / .-.. .. -... . .-. - -.-- / .. ... / . - . .-. -. .- .-.. / ...- .. --. .. .-.. .- -. -.-. . / .- -. -.. / - .... . / .-- .. .-.. .-.. / - --- / -.. . ..-. . -. -.. / .. - / .- --. .- .. -. ... - / .- .-.. .-.. / ..-. --- . ... / .- -. -.. / - .... .-. . .- - ... | - .... . / .--. .-. .. -.-. . / --- ..-. / .-.. .. -... . .-. - -.-- / .. ... / . - . .-. -. .- .-.. / ...- .. --. .. .-.. .- -. -.-. . / .- -. -.. / - .... . / .-- .. .-.. .-.. / - --- / -.. . ..-. . -. -.. / .. - / .- --. .- .. -. ... - / .- .-.. .-.. / ..-. --- . ... / .- -. -.. / - .... .-. . .- - ... | THE PRICE OF LIBERTY IS ETERNAL VIGILANCE AND THE WILL TO DEFEND IT AGAINST ALL FOES AND THREATS | morse_code | morse_code | encoding | {
"type": "none",
"value": null
} | beginner | en | 211 | 306 | cipher_museum | 2.0 | public | null | null |
kl7-v3-0276 | ALWNHMFXHRKBFBMQUNWNGISYPCADLUHHVDQVDVFRYMCPXUIVLMRDZDRQVLDVHLZWUNYRXGSFAGX | ALWNHMFXHRKBFBMQUNWNGISYPCADLUHHVDQVDVFRYMCPXUIVLMRDZDRQVLDVHLZWUNYRXGSFAGX | THE SPEED OF LIGHT IS THE ULTIMATE SPEED LIMIT IN THE UNIVERSE EINSTEIN DEMONSTRATED THIS | kl7 | kl7 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
porta-v2-0124 | BYMMPRHGYQNRZRGUTZXEPDTZYEHRSNVEEKENWTYMOWHRGNVVTGKSUOOPPISRVNMWDKNNMWLNSLISLDXEXNGRMVHIDWLRWJLYXAMMPKXQUBRWRNPARFHSPMORHTMZTZXPYKERIAHKTITGPJLOIEMNELWROSDJBPWWTZXQ | BYMMPRHGYQNRZRGUTZXEPDTZYEHRSNVEEKENWTYMOWHRGNVVTGKSUOOPPISRVNMWDKNNMWLNSLISLDXEXNGRMVHIDWLRWJLYXAMMPKXQUBRWRNPARFHSPMORHTMZTZXPYKERIAHKTITGPJLOIEMNELWROSDJBPWWTZXQ | ULTRA INTELLIGENCE DERIVED FROM DECRYPTED GERMAN ENIGMA TRAFFIC INDICATES THAT ENEMY PANZER DIVISIONS ARE CONCENTRATED AT CALAIS CONFIRMING THE DECEPTION OPERATION FORTITUDE HAS SUCCEEDED | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "NAPLES"
} | intermediate | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
playfair-v2-0531 | RFOAFOUENDXFCYKFZRDICYIMPLOBMWFKKQGUTDUELUIMQYNFFXDEKBNKFXBXPKCINHDUSFAQPK | RFOAFOUENDXFCYKFZRDICYIMPLOBMWFKKQGUTDUELUIMQYNFFXDEKBNKFXBXPKCINHDUSFAQPK | FOR GOD SO LOVED THE WORLD THAT HE GAVE HIS ONLY SON THAT WHOEVER BELIEVES SHALL NOT PERISH | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
morse-code-v2-0090 | -- .- .-. -.-- / --.- ..- . . -. / --- ..-. / ... -.-. --- - ... / .-- .- ... / -... . .... . .- -.. . -.. / .- ..-. - . .-. / .... . .-. / -.-. .. .--. .... . .-. / .-.. . - - . .-. ... / .-- . .-. . / -.. . -.-. --- -.. . -.. / -... -.-- / - .... --- -- .- ... / .--. .... . .-.. .. .--. .--. . ... | -- .- .-. -.-- / --.- ..- . . -. / --- ..-. / ... -.-. --- - ... / .-- .- ... / -... . .... . .- -.. . -.. / .- ..-. - . .-. / .... . .-. / -.-. .. .--. .... . .-. / .-.. . - - . .-. ... / .-- . .-. . / -.. . -.-. --- -.. . -.. / -... -.-- / - .... --- -- .- ... / .--. .... . .-.. .. .--. .--. . ... | MARY QUEEN OF SCOTS WAS BEHEADED AFTER HER CIPHER LETTERS WERE DECODED BY THOMAS PHELIPPES | morse_code | morse_code | encoding | {
"type": "none",
"value": null
} | beginner | en | 211 | 300 | cipher_museum | 2.0 | public | null | null |
caesar-192 | VBIAXK DXR VATGZXW | VBIAXK DXR VATGZXW | CIPHER KEY CHANGED | caesar | caesar | substitution | {
"type": "shift",
"value": 19
} | beginner | en | 16 | 18 | cipher_museum | 0.2 | public | null | null |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.