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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
straddling-checkerboard-v2-0358 | 2422622012850212203672292022056221282895292972689148563325128282022226907670422217238624425221707005732221987025220218327 | 2422622012850212203672292022056221282895292972689148563325128282022226907670422217238624425221707005732221987025220218327 | GENERAL ORDERS NUMBER ONE ALL COMMUNICATIONS SHALL BE ENCRYPTED USING THE APPROVED CIPHER DISK | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "RASTONICEL"
} | advanced | en | 121 | 121 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v2-0213 | FHFJ QUNCJA FJT AKNTKJ WEHRBIFJ OUCHQ QBE OKIOE QK FQQFRG QBE AENIFJ EJCAIF RCLBEN IFRBCJE | FHFJ QUNCJA FJT AKNTKJ WEHRBIFJ OUCHQ QBE OKIOE QK FQQFRG QBE AENIFJ EJCAIF RCLBEN IFRBCJE | ALAN TURING AND GORDON WELCHMAN BUILT THE BOMBE TO ATTACK THE GERMAN ENIGMA CIPHER MACHINE | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "FORTRESS"
} | beginner | en | 76 | 90 | cipher_museum | 2.0 | public | null | null |
adfgvx-v2-0271 | XAFFVAADXDFGGXDDADFAXGDDXDADDDDGDADV | XAFFVAADXDFGGXDDADFAXGDDXDADDDDGDADV | CONTACT HAS BEEN MADE | adfgvx | adfgvx | fractionation | {
"polybius": "TRIUMPH",
"columnar": "JUSTICE"
} | advanced | en | 36 | 36 | cipher_museum | 2.0 | public | null | null |
stager-route-v3-0148 | TARHERIRAVEILSXWAXXY | TARHERIRAVEILSXWAXXY | THE RAILWAY ARRIVES | stager_route | stager_route | transposition | {
"type": "integer",
"value": 10
} | expert | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
slidex-v2-0180 | HIXTLGSSNADMNYGSMEXICAJKOCODXAXWAVMXROXQGDZVWSOIHYQRILYEYTDOTAVHXJODNXGOMXKY | HIXTLGSSNADMNYGSMEXICAJKOCODXAXWAVMXROXQGDZVWSOIHYQRILYEYTDOTAVHXJODNXGOMXKY | ARMY OF THE POTOMAC CROSSES THE RAPPAHANNOCK TONIGHT ABSOLUTE SILENCE IS IMPERATIVE NOW | slidex | slidex | transposition | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
vernam-v2-0096 | LBNLFJXAMPETPNBIBVHXOKHBTDRTWQEAKUQAWPUYZTKIWMJGQPHTSUGSSZXAWDCWQFVDCDWLFDXOCR | LBNLFJXAMPETPNBIBVHXOKHBTDRTWQEAKUQAWPUYZTKIWMJGQPHTSUGSSZXAWDCWQFVDCDWLFDXOCR | LA LIBERTE GUIDANT LE PEUPLE VERS UN AVENIR MEILLEUR ET PLUS JUSTE POUR TOUS LES HOMMES LIBRES | vernam | vernam | stream | {
"type": "pad",
"value": "ABCDEFGH (repeating)"
} | expert | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v3-0868 | YNAPLIATIRXAGESVLL | YNAPLIATIRXAGESVLL | GRAVITY EXPLAINS ALL | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "TRIUMPH"
} | intermediate | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
m209-v2-0448 | MJPHULXBMEJZQQBKAMTONXIXZBVLALDLQOLYCCILMRYNDSQDLVJKLCCQHBSFBWESCYNZSPO | MJPHULXBMEJZQQBKAMTONXIXZBVLALDLQOLYCCILMRYNDSQDLVJKLCCQHBSFBWESCYNZSPO | QUOTH THE RAVEN NEVERMORE THE BIRD SAT ON THE BUST OF PALLAS JUST ABOVE MY CHAMBER DOOR | m209 | m209 | machine | {
"type": "seed",
"value": "VICTORY"
} | expert | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
cda-0016723 | K ┌· ⌐ ─ X ┐· ┘· X Γ· K Γ· ┘· ─ r Γ· ┐· r· L ┌· X ┌· L ⌐ ┌· ┌· ⌐ ─ ¬· L └ L K K L ┌· X ⌒ Γ· K r· ┘· X· K X X· ¬ X K Γ· K X· K Γ· ┘· ─ K r· L ┐· └ ⌐ ⌒· ⌐· ⌐ Γ· ┌· r Γ· ┐· r· L ┌· L ─ r ┌· ⌒· ┐· K X ┐· ⌐ Γ· ┌· X ┘· ⌐· └ L K K L ┌· X X Γ· ┌ X· └ K ⌐ ─ L ┘· X· X └ ⌒· ¬ ┌· X· K L ⌐· ┘· ┌· r L ⌒ ┘· ┌· ┐ X ┘· ─ └ ⌒· ⌒ r· L ─ ... | K ┌· ⌐ ─ X ┐· ┘· X Γ· K Γ· ┘· ─ r Γ· ┐· r· L ┌· X ┌· L ⌐ ┌· ┌· ⌐ ─ ¬· L └ L K K L ┌· X ⌒ Γ· K r· ┘· X· K X X· ¬ X K Γ· K X· K Γ· ┘· ─ K r· L ┐· └ ⌐ ⌒· ⌐· ⌐ Γ· ┌· r Γ· ┐· r· L ┌· L ─ r ┌· ⌒· ┐· K X ┐· ⌐ Γ· ┌· X ┘· ⌐· └ L K K L ┌· X X Γ· ┌ X· └ K ⌐ ─ L ┘· X· X └ ⌒· ¬ ┌· X· K L ⌐· ┘· ┌· r L ⌒ ┘· ┌· ┐ X ┘· ─ └ ⌒· ⌒ r· L ─ ... | TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION | pigpen | pigpen | null | {} | hard | en | 80 | 80 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
cda-0017064 | PATTE RNWOR DSHEX PBREA KMONX ALPHA BETIX SUBSX ITUTI ONCRZ PTOGX APHYX EWARD SPATX ENCEA NDCAR EFULX HINKI NGEVZ RYSYX TEMNE EDSAX HONEX TTHRZ ATMOX ELCEZ | PATTE RNWOR DSHEX PBREA KMONX ALPHA BETIX SUBSX ITUTI ONCRZ PTOGX APHYX EWARD SPATX ENCEA NDCAR EFULX HINKI NGEVZ RYSYX TEMNE EDSAX HONEX TTHRZ ATMOX ELCEZ | PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | commercial_code | commercial_code | null | {} | hard | en | 130 | 130 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
caesar-v2-0513 | BPM PIZJWZ QA KTMIZ | BPM PIZJWZ QA KTMIZ | THE HARBOR IS CLEAR | caesar | caesar | substitution | {
"type": "shift",
"value": 8
} | beginner | en | 16 | 19 | cipher_museum | 2.0 | public | null | null |
hill-v2-0284 | VNHONEPAEQVWXH | VNHONEPAEQVWXH | E PLURIBUS UNUM | hill | hill | polygraphic | {
"a": 7,
"b": 3,
"c": 4,
"d": 5
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
rail-fence-v2-0322 | QEOSBUVRTNAJMEOEMATLUARTNOSHLSHDHNRDEATCOTEERBPAYOHVTIUFBMREAHBSOOERETV | QEOSBUVRTNAJMEOEMATLUARTNOSHLSHDHNRDEATCOTEERBPAYOHVTIUFBMREAHBSOOERETV | QUOTH THE RAVEN NEVERMORE THE BIRD SAT ON THE BUST OF PALLAS JUST ABOVE MY CHAMBER DOOR | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 9
} | intermediate | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
cda-0021134 | UKZBQ KIXMX BKMFC UQRCW QBITF YWZJI TCKNU WGFXG ADBXW UMDFF KZPHP CUHGB WSZJG WTISL RPNBT TSUKR BHTTE EXDWZ CTPGJ XCVH | UKZBQ KIXMX BKMFC UQRCW QBITF YWZJI TCKNU WGFXG ADBXW UMDFF KZPHP CUHGB WSZJG WTISL RPNBT TSUKR BHTTE EXDWZ CTPGJ XCVH | THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS | one_time_pad | one_time_pad | null | {} | hard | en | 99 | 99 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
cda-0021346 | 20.18.11 1.14.9 19.13.13 11.44.1 20.2.14 11.9.11 19.37.10 18.11.14 11.30.14 7.8.5 2.6.3 5.8.15 12.36.4 14.45.2 14.35.15 19.2.8 3.33.9 9.3.15 8.32.14 1.36.9 17.1.5 10.35.10 19.3.5 13.29.6 16.21.3 1.38.1 19.31.13 20.27.7 12.8.6 3.22.8 1.49.13 8.5.15 4.33.11 17.7.6 17.5.11 18.21.8 12.29.7 9.39.4 7.28.11 8.13.7 5.33.15 15.... | 20.18.11 1.14.9 19.13.13 11.44.1 20.2.14 11.9.11 19.37.10 18.11.14 11.30.14 7.8.5 2.6.3 5.8.15 12.36.4 14.45.2 14.35.15 19.2.8 3.33.9 9.3.15 8.32.14 1.36.9 17.1.5 10.35.10 19.3.5 13.29.6 16.21.3 1.38.1 19.31.13 20.27.7 12.8.6 3.22.8 1.49.13 8.5.15 4.33.11 17.7.6 17.5.11 18.21.8 12.29.7 9.39.4 7.28.11 8.13.7 5.33.15 15.... | THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | book_cipher | book_cipher | null | {} | hard | en | 171 | 171 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
morse-code-001 | .- - - .- -.-. -.- / .- - / -.. .- .-- -. | .- - - .- -.-. -.- / .- - / -.. .- .-- -. | ATTACK AT DAWN | morse_code | morse_code | encoding | {
"type": "none",
"value": null
} | beginner | en | 28 | 41 | cipher_museum | 0.2 | public | null | null |
kl7-v2-0198 | YCGQKMPGKTYWESUOMIZVMRXNYMXQTHWGJCYYJSGJMGILODHQZVOQCJCUNJDWXVZFFUMSQ | YCGQKMPGKTYWESUOMIZVMRXNYMXQTHWGJCYYJSGJMGILODHQZVOQCJCUNJDWXVZFFUMSQ | IT IS BETTER TO REMAIN SILENT AND BE THOUGHT A FOOL THAN TO SPEAK AND REMOVE ALL DOUBT | kl7 | kl7 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 69 | 69 | cipher_museum | 2.0 | public | null | null |
diana-v2-0249 | LLEZSGLBWALQVDBXLCRONQBNNQMUPLNKDMUENLOHWUNBKLPTYKCAJEWYOHYVPWHFWXYGMUDXIUXPLZWEAYASTLNOBMRBTWJBAAHPJCAPLREAXUJJOXLVEMKJLCJAFHKXLVEJDPJAONWUHBQSANFZIACRUXFCAXUJHAW | LLEZSGLBWALQVDBXLCRONQBNNQMUPLNKDMUENLOHWUNBKLPTYKCAJEWYOHYVPWHFWXYGMUDXIUXPLZWEAYASTLNOBMRBTWJBAAHPJCAPLREAXUJJOXLVEMKJLCJAFHKXLVEJDPJAONWUHBQSANFZIACRUXFCAXUJHAW | 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 | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "SPECIAL"
} | intermediate | en | 163 | 163 | cipher_museum | 2.0 | public | null | null |
m94-v2-0168 | JWCZRDXVQGGAAVEBSUQWYBOKIYYBBVCIAWGJTUCXESFFPGVTRPYOPKPCYKQEWSUIMNJHFRVDODUHH | JWCZRDXVQGGAAVEBSUQWYBOKIYYBBVCIAWGJTUCXESFFPGVTRPYOPKPCYKQEWSUIMNJHFRVDODUHH | THE LORD IS MY SHEPHERD I SHALL NOT WANT HE MAKETH ME LIE DOWN IN GREEN PASTURES BY STILL WATERS | m94 | m94 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
cda-0009680 | BEYE SIPR KRWW YMGH EEUO HSAE EPYT REPL NREW EKNA LEUA OFST CTRS TROO HEHE EIDR NEIE CSNX CLKS VIAG X | BEYE SIPR KRWW YMGH EEUO HSAE EPYT REPL NREW EKNA LEUA OFST CTRS TROO HEHE EIDR NEIE CSNX CLKS VIAG X | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL THE VIGENERE CIPHER USES A REPEATING KEYWORD | scytale | scytale | null | {
"cols": 9
} | hard | en | 81 | 81 | synthetic_educational | null | null | [] | |
kryptos-v3-0283 | KPFQKYMIKPCAHUDQVDYKRHTMIRIYCTQDMVUDVANHQBAUOIXHWGVSBQYHWQOIFFDCVHCDKKDTQE | KPFQKYMIKPCAHUDQVDYKRHTMIRIYCTQDMVUDVANHQBAUOIXHWGVSBQYHWQOIFFDCVHCDKKDTQE | THE JOURNEY OF A THOUSAND MILES BEGINS WITH A SINGLE STEP AS LAO TZU WROTE LONG AGO IN CHINA | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "VIRTUAL"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
bifid-v3-0494 | RENATLLHFGRAMHXVYZHM | RENATLLHFGRAMHXVYZHM | THE ALCHEMIST SUCCEEDS | bifid | bifid | fractionation | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
cda-0011145 | HSKEVF EFLVNOBXSF XR FSB DVSZEF DN YEBBEV AVEQUEFLN LSYUHFJV BVJFROSRXBXSF VEJKR LSYUHFR XF ZEN SVKEV ETEVN RNRBEH FEEKR JF ISFERB BIVEJB HSKEY IUHJF VEJKJDYE SUBOUB RISUYK RISM JYY VEJRSFXFC RBEOR | HSKEVF EFLVNOBXSF XR FSB DVSZEF DN YEBBEV AVEQUEFLN LSYUHFJV BVJFROSRXBXSF VEJKR LSYUHFR XF ZEN SVKEV ETEVN RNRBEH FEEKR JF ISFERB BIVEJB HSKEY IUHJF VEJKJDYE SUBOUB RISUYK RISM JYY VEJRSFXFC RBEOR | MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER EVERY SYSTEM NEEDS AN HONEST THREAT MODEL HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | monoalphabetic | monoalphabetic | null | {
"alphabet": "JDLKEACIXGZYHFSOQVRBUTMPNW"
} | hard | en | 168 | 168 | synthetic_educational | null | null | [] | |
cda-0013606 | ZNIAN LZPTU RWCRI BRAUA OYLQH CXHMU SXJYO EWMFI ICWWL STSSU LNOKM XLMAB DLTGY TUKDS PRRSV SJRLH XOKMP CVEKV IKOGF FITYO XUIAP WCYYU KWFTM ERVLW WZPKX RUSMR RLSLA PCZKD OUJNW CHUKL KESYS RIIBL SJGI | ZNIAN LZPTU RWCRI BRAUA OYLQH CXHMU SXJYO EWMFI ICWWL STSSU LNOKM XLMAB DLTGY TUKDS PRRSV SJRLH XOKMP CVEKV IKOGF FITYO XUIAP WCYYU KWFTM ERVLW WZPKX RUSMR RLSLA PCZKD OUJNW CHUKL KESYS RIIBL SJGI | HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS A TRANSPARENT TOOL SHOULD SHOW ITS REASONING DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION A STRONG CLAIM NEEDS STRONG EVIDENCE PERHAPS | vernam | vernam | null | {} | hard | en | 164 | 164 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
vic-v3-0218 | 81888758214351006889291335843948415391 | 81888758214351006889291335843948415391 | DONT FIRE TILL YOU SEE THE WHITES | vic | vic | substitution | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 38 | 38 | cipher_museum | 2.0 | public | null | null |
cda-0013725 | .... .... .. ... . ..... . . .... .. . ... .. ... .. .... .... .... . ..... . ... .... .... .... ..... .... .. . ..... .... ... .. ... ... .... .... ..... ... . . .... ... .. . . . ... . ..... ... .. .. .... .... ... .... ..... .... ... . ..... .. ... . . .... .. . .... . ..... .... ... | .... .... .. ... . ..... . . .... .. . ... .. ... .. .... .... .... . ..... . ... .... .... .... ..... .... .. . ..... .... ... .. ... ... .... .... ..... ... . . .... ... .. . . . ... . ..... ... .. .. .... .... ... .... ..... .... ... . ..... .. ... . . .... .. . .... . ..... .... ... | THE ARCHITECTURE SHOULD MAKE MISUSE HARDER | tap_code | tap_code | null | {} | medium | en | 37 | 37 | 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. |
cda-0012418 | BAAB AAAB BBAA BAAA AAAA BAAA AAAA BAAA BBBA BAAA BAAB AAAB AAAA ABAB AABA BAAB BBAA AAAA BAAB AAAB AABB BABB ABBA ABBA BABA AAAB BABA BBAA AAAA BAAB AABA AABA BBAB AAAB AAAB BAAB BBAA ABAA BAAA ABBB AAAA ABAA AAAA ABBA ABAA BAAA A | BAAB AAAB BBAA BAAA AAAA BAAA AAAA BAAA BBBA BAAA BAAB AAAB AAAA ABAB AABA BAAB BBAA AAAA BAAB AAAB AABB BABB ABBA ABBA BABA AAAB BABA BBAA AAAA BAAB AABA AABA BBAB AAAB AAAB BAAB BBAA ABAA BAAA ABBB AAAA ABAA AAAA ABBA ABAA BAAA A | THE ARCHITECTURE SHOULD MAKE MISUSE HARDER | bacon_cipher | bacon_cipher | null | {} | hard | en | 185 | 185 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
argenti-176 | 62 78 11 64 82 43 78 53 22 80 82 46 24 28 49 78 74 40 41 11 82 86 61 28 21 11 78 75 47 13 53 38 70 82 30 28 46 51 53 38 31 79 37 46 30 78 43 82 38 24 78 50 11 45 40 41 53 13 82 61 28 21 88 77 47 75 64 36 74 61 11 41 12 78 47 40 75 45 30 82 86 46 31 78 61 28 41 50 11 38 79 13 42 74 47 80 41 28 26 22 30 53 89 47 70 82 51... | 62 78 11 64 82 43 78 53 22 80 82 46 24 28 49 78 74 40 41 11 82 86 61 28 21 11 78 75 47 13 53 38 70 82 30 28 46 51 53 38 31 79 37 46 30 78 43 82 38 24 78 50 11 45 40 41 53 13 82 61 28 21 88 77 47 75 64 36 74 61 11 41 12 78 47 40 75 45 30 82 86 46 31 78 61 28 41 50 11 38 79 13 42 74 47 80 41 28 26 22 30 53 89 47 70 82 51... | WE THE PEOPLE OF THE UNITED STATES IN ORDER TO FORM A MORE PERFECT UNION ESTABLISH JUSTICE INSURE DOMESTIC TRANQUILITY PROVIDE FOR THE COMMON DEFENSE PROMOTE THE GENERAL WELFARE | argenti | argenti | nomenclator | {
"type": "seed",
"value": "SECRET"
} | expert | en | 298 | 446 | cipher_museum | 0.2 | public | null | null |
fractionated-morse-160 | TUSPCARBGPICJPCNLIMSUGBQVISBPBNDCTUSPCARBGVUSMQBCEQBIDDCBI | TUSPCARBGPICJPCNLIMSUGBQVISBPBNDCTUSPCARBGVUSMQBCEQBIDDCBI | WE SHALL FIGHT ON THE BEACHES AND WE SHALL NEVER SURRENDER | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 58 | 58 | cipher_museum | 0.2 | public | null | null |
alberti-disk-v3-0291 | ZSGNRSIBMSYRSASNZOIXZORRYHZRIQSDIWBEVMRBYXDUKOZDNUBWZNMLKSYABZAZSMVCTKYITGCTK | ZSGNRSIBMSYRSASNZOIXZORRYHZRIQSDIWBEVMRBYXDUKOZDNUBWZNMLKSYABZAZSMVCTKYITGCTK | THE RIGHT OF THE PEOPLE TO KEEP AND BEAR ARMS SHALL NOT BE INFRINGED BY THE FEDERAL GOVERNMENT | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 8
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
stager-route-v2-0041 | AIOEHTOENTTLLTGHALDRAOETHRLVDXXTEDSATIOYHXXAOFSGLNTUTX | AIOEHTOENTTLLTGHALDRAOETHRLVDXXTEDSATIOYHXXAOFSGLNTUTX | ALL THAT GLITTERS IS NOT GOLD OFTEN HAVE YOU HEARD THAT TOLD | stager_route | stager_route | transposition | {
"type": "integer",
"value": 9
} | expert | en | 54 | 54 | cipher_museum | 2.0 | public | null | null |
fialka-v2-0214 | XHZGMDYTZQAKRZLZQTMDKSCHWBZTYYODUTPVTUIHVCAGJSCDVZMITZPASJXGTYLTBEORGYTPVSSDYKF | XHZGMDYTZQAKRZLZQTMDKSCHWBZTYYODUTPVTUIHVCAGJSCDVZMITZPASJXGTYLTBEORGYTPVSSDYKF | CLAUDE SHANNON PROVED THAT THE ONE TIME PAD ACHIEVES PERFECT SECRECY WHEN USED CORRECTLY ONCE | fialka | fialka | machine | {
"type": "seed",
"value": "KREMLIN"
} | expert | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
culper-ring-v2-0101 | 998 803 804 820 819 818 802 807 811 800 813 803 999 998 820 801 804 817 999 998 800 811 811 804 818 999 104 998 803 804 817 999 998 822 804 811 819 999 998 822 804 813 813 999 998 804 818 999 998 818 819 804 819 818 999 998 825 820 999 998 818 802 807 820 819 825 999 998 820 813 803 999 998 819 817 820 819 825 804 999 ... | 998 803 804 820 819 818 802 807 811 800 813 803 999 998 820 801 804 817 999 998 800 811 811 804 818 999 104 998 803 804 817 999 998 822 804 811 819 999 998 822 804 813 813 999 998 804 818 999 998 818 819 804 819 818 999 998 825 820 999 998 818 802 807 820 819 825 999 998 820 813 803 999 998 819 817 820 819 825 804 999 ... | DEUTSCHLAND UBER ALLES IN DER WELT WENN ES STETS ZU SCHUTZ UND TRUTZE BRÜDERLICH ZUSAMMENHÄLT | culper_ring | culper_ring | codebook | {
"type": "none",
"value": null
} | expert | en | 312 | 415 | cipher_museum | 2.0 | public | null | null |
jn25-v2-0094 | 26182 26194 26183 26184 26183 26199 26197 26180 26193 26198 26192 26188 26198 26198 26188 26194 26193 26188 26193 26183 26188 26182 26180 26199 26184 26198 26184 26193 26184 26192 26104 26185 26194 26197 26182 26184 26198 26180 26198 26198 26184 26192 26181 26191 26188 26193 26186 26180 26191 26194 26193 26186 26199 26... | 26182 26194 26183 26184 26183 26199 26197 26180 26193 26198 26192 26188 26198 26198 26188 26194 26193 26188 26193 26183 26188 26182 26180 26199 26184 26198 26184 26193 26184 26192 26104 26185 26194 26197 26182 26184 26198 26180 26198 26198 26184 26192 26181 26191 26188 26193 26186 26180 26191 26194 26193 26186 26199 26... | CODED TRANSMISSION INDICATES ENEMY FORCES ASSEMBLING ALONG THE BORDER WITH HEAVY ARTILLERY UNITS | jn25 | jn25 | codebook | {
"type": "additive",
"value": "16180"
} | expert | en | 420 | 503 | cipher_museum | 2.0 | public | null | null |
two-square-v3-0364 | BPBFDRSSQUOIHQGIENOLRXDRSPECSKBFANFQSBFGMOHMENTOFRFKIGIOBMAOROHICGSKBFQNNKDREEVAORMOCY | BPBFDRSSQUOIHQGIENOLRXDRSPECSKBFANFQSBFGMOHMENTOFRFKIGIOBMAOROHICGSKBFQNNKDREEVAORMOCY | CONGRESS SHALL MAKE NO LAW RESPECTING AN ESTABLISHMENT OF RELIGION OR PROHIBITING THE FREE EXERCISE | two_square | two_square | polygraphic | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 86 | 86 | cipher_museum | 2.0 | public | null | null |
red-type-a-v3-0004 | DRIBUKEADMKLOZRMUOVE | DRIBUKEADMKLOZRMUOVE | THE LEGIONS STAND READY | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "SAKURA"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
great-cipher-v2-0266 | 149 103 142 135 122 100 175 158 133 157 | 149 103 142 135 122 100 175 158 133 157 | PRESS THE ATTACK | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "FRANCE"
} | expert | en | 30 | 39 | cipher_museum | 2.0 | public | null | null |
one-time-pad-v2-0157 | QNQPHDHWFIHWUSBPAQTMFCNVEDUJHVKQUBOEPGPFZAXHNNRTOIBGIAXYXUUZWCTZHJGZCSDNSGM | QNQPHDHWFIHWUSBPAQTMFCNVEDUJHVKQUBOEPGPFZAXHNNRTOIBGIAXYXUUZWCTZHJGZCSDNSGM | ARMY OF NORTHERN VIRGINIA SURRENDERS AT APPOMATTOX COURTHOUSE THE WAR IN THE EAST IS OVER | one_time_pad | one_time_pad | stream | {
"type": "pad",
"value": "QWERTY (repeating)"
} | expert | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
sigaba-v3-0011 | FDFLZUZWQXXIQXIFHBB | FDFLZUZWQXXIQXIFHBB | AVE MARIA GRATIA PLENA | sigaba | sigaba | machine | {
"type": "seed",
"value": "ECMMARK"
} | expert | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
trifid-v2-0191 | HV+TDOCZIHJDCDBTACCUICD+RCVIJ+IOEH+RCCL+GODDTHLVRH+AHVLOESQIAROTGGDWWETVFH | HV+TDOCZIHJDCDBTACCUICD+RCVIJ+IOEH+RCCL+GODDTHLVRH+AHVLOESQIAROTGGDWWETVFH | I CAN DO ALL THINGS THROUGH CHRIST WHICH STRENGTHENETH ME IN EVERY TRIAL AND TRIBULATION | trifid | trifid | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0014393 | ZONSGZXUWIPYGWJATLLEHDYLFZSSPTPCKSAVWSNRXWGXAW | ZONSGZXUWIPYGWJATLLEHDYLFZSSPTPCKSAVWSNRXWGXAW | HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | running_key | running_key | null | {} | medium | en | 46 | 46 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
cda-0020442 | RZCA DWTO ESRK XFXO QBJE UQDV EVGK TSSH SYSP FFNS XSYS ARSK LNVF NQPO WTAI XEOZ LZKD IUCR UIJK ACDT HRWQ RVPW ATTT XCNH NTXJ FUCC RUIR YRHV BJSS UJNL WGCH CNLT QSQW UIBW G | RZCA DWTO ESRK XFXO QBJE UQDV EVGK TSSH SYSP FFNS XSYS ARSK LNVF NQPO WTAI XEOZ LZKD IUCR UIJK ACDT HRWQ RVPW ATTT XCNH NTXJ FUCC RUIR YRHV BJSS UJNL WGCH CNLT QSQW UIBW G | DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE THE MESSAGE WAS HIDDEN BUT NOT SECURE | one_time_pad | one_time_pad | null | {} | hard | en | 137 | 137 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
kl7-v3-0072 | SZYBWTBPIKYZOHJCOLWIDCPMTXKOCEBPHVVBVKHWESMYZYFEQUUSZEYQVGMZBJZSFGHEM | SZYBWTBPIKYZOHJCOLWIDCPMTXKOCEBPHVVBVKHWESMYZYFEQUUSZEYQVGMZBJZSFGHEM | THE LOVE OF MONEY IS THE ROOT OF ALL EVIL BUT IT IS THE LOVE OF GOOD THAT MOVES THE WORLD | kl7 | kl7 | machine | {
"type": "seed",
"value": "NATO"
} | expert | en | 69 | 69 | cipher_museum | 2.0 | public | null | null |
cda-0021650 | 11 5 18 3 11 8 15 6 6 19 16 18 9 14 3 9 16 12 5 19 1 25 19 20 8 5 19 25 19 20 5 13 13 21 19 20 2 5 19 5 3 21 18 5 5 22 5 14 9 6 5 14 5 13 25 11 14 15 23 19 1 12 7 15 18 9 20 8 13 | 11 5 18 3 11 8 15 6 6 19 16 18 9 14 3 9 16 12 5 19 1 25 19 20 8 5 19 25 19 20 5 13 13 21 19 20 2 5 19 5 3 21 18 5 5 22 5 14 9 6 5 14 5 13 25 11 14 15 23 19 1 12 7 15 18 9 20 8 13 | KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM | aeneas_tacticus | aeneas_tacticus | null | {} | medium | en | 69 | 69 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
commercial-code-v2-0107 | ZUZUZ HAZUZ SAZUZ BEZUZ WAZUZ XAZUZ DAZUZ SAZUZ WAZUZ GAZUZ XUZUZ DABAB ZUZUZ XAZUZ GAZUZ CEZUZ GAZUZ RAZUZ XUZUZ ZUZUZ GEZUZ GAZUZ BAZUZ WAZUZ XAZUZ XUZUZ ZUZUZ BAZUZ JAZUZ SAZUZ XUZUZ VOBAB ZUZUZ HAZUZ BAZUZ ZAZUZ KAZUZ GAZUZ WAZUZ XAZUZ XUZUZ ZUZUZ CAZUZ WAZUZ SAZUZ BEZUZ JAZUZ KAZUZ ZAZUZ XUZUZ ZUZUZ HAZUZ SAZUZ WA... | ZUZUZ HAZUZ SAZUZ BEZUZ WAZUZ XAZUZ DAZUZ SAZUZ WAZUZ GAZUZ XUZUZ DABAB ZUZUZ XAZUZ GAZUZ CEZUZ GAZUZ RAZUZ XUZUZ ZUZUZ GEZUZ GAZUZ BAZUZ WAZUZ XAZUZ XUZUZ ZUZUZ BAZUZ JAZUZ SAZUZ XUZUZ VOBAB ZUZUZ HAZUZ BAZUZ ZAZUZ KAZUZ GAZUZ WAZUZ XAZUZ XUZUZ ZUZUZ CAZUZ WAZUZ SAZUZ BEZUZ JAZUZ KAZUZ ZAZUZ XUZUZ ZUZUZ HAZUZ SAZUZ WA... | FOURSCORE AND SEVEN YEARS AGO OUR FATHERS BROUGHT FORTH ON THIS CONTINENT A NEW NATION CONCEIVED IN LIBERTY AND DEDICATED TO THE PROPOSITION THAT ALL MEN ARE CREATED EQUAL | commercial_code | commercial_code | codebook | {
"type": "none",
"value": null
} | expert | en | 770 | 923 | cipher_museum | 2.0 | public | null | null |
four-square-v2-0170 | BNINUCGTREOSRNGTSDILFYALCQGYIPICEUQYOEOUARLVLHQWTEPEHLCMOIEOPCLGNNHPYCCSALAW | BNINUCGTREOSRNGTSDILFYALCQGYIPICEUQYOEOUARLVLHQWTEPEHLCMOIEOPCLGNNHPYCCSALAW | ENEMY FORCES REPORTED MOVING TOWARD GETTYSBURG CAVALRY HAS CONFIRMED THE FULL SIGHTING | four_square | four_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
cda-0006391 | TISTTXNLEUHPTHIOCENTEHHETFETCIAEEPSCMTYOURKLEOEEDNTEEALIARIXOXYIFNSFSXKTWNICURTXEEITNIRERXYNTEDDEQIXCDHXEESUBX | TISTTXNLEUHPTHIOCENTEHHETFETCIAEEPSCMTYOURKLEOEEDNTEEALIARIXOXYIFNSFSXKTWNICURTXEEITNIRERXYNTEDDEQIXCDHXEESUBX | THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | scytale | scytale | null | {
"cols": 11
} | hard | en | 110 | 110 | synthetic_educational | null | null | [
"column_count_search",
"anagram_recovery"
] | Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter. |
cda-0014353 | .... .... .. ... . ..... ... .... ... ... . ..... .... .... .. .... ... .. . ..... ... ..... . . . .... .. .... .... ... .... .... .. ... . ..... ... .... .... .. . ..... .... .... .. .... . ... . . ... . ... . ..... .... .... ..... ... ... . .. .... .. . ..... . . . ... . . . .. ..... | .... .... .. ... . ..... ... .... ... ... . ..... .... .... .. .... ... .. . ..... ... ..... . . . .... .. .... .... ... .... .... .. ... . ..... ... .... .... .. . ..... .... .... .. .... . ... . . ... . ... . ..... .... .... ..... ... ... . .. .... .. . ..... . . . ... . . . .. ..... | THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS ALWAYS | tap_code | tap_code | null | {} | hard | en | 202 | 202 | 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. |
m94-v2-0154 | ITULUUOCPILAGIKMLIPFGFOWXZVLSCVGDXHBVQSTNJLPFNNOGDKYLZOKBDVKPLBIKMLI | ITULUUOCPILAGIKMLIPFGFOWXZVLSCVGDXHBVQSTNJLPFNNOGDKYLZOKBDVKPLBIKMLI | ALL THE WORLDS A STAGE AND EACH MAN IN HIS TIME PLAYS MANY PARTS ON LIFES GREAT STAGE | m94 | m94 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
morse-code-v3-0015 | - .... . / ... .. . --. . / -... . --. .. -. ... | - .... . / ... .. . --. . / -... . --. .. -. ... | THE SIEGE BEGINS | morse_code | morse_code | encoding | {
"type": "none",
"value": null
} | beginner | en | 33 | 48 | cipher_museum | 2.0 | public | null | null |
cda-0020843 | 62 49 57 34 1 63 94 82 81 62 68 3 59 24 3 82 63 94 61 34 48 36 14 23 70 21 59 48 11 33 53 63 72 11 48 43 93 4 63 96 23 35 93 63 88 23 3 43 | 62 49 57 34 1 63 94 82 81 62 68 3 59 24 3 82 63 94 61 34 48 36 14 23 70 21 59 48 11 33 53 63 72 11 48 43 93 4 63 96 23 35 93 63 88 23 3 43 | DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS | homophonic | homophonic | null | {} | medium | en | 48 | 48 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
trifid-v2-0627 | BMXTWSJVWJP+UFRJRMXPQZDCUABTXTPYJFOORGSJ+QBJPPDKBMBSWXJBKVLDJDZBEBYRGOQTIWRBSVQST+MZQANDJTAJHGRDDZWSODWWFGLXJEOULFEFDOTJJAHFIJCDDPEKGBGAACBBNFUB+GFHXT+WGXSDZOLOJPE | BMXTWSJVWJP+UFRJRMXPQZDCUABTXTPYJFOORGSJ+QBJPPDKBMBSWXJBKVLDJDZBEBYRGOQTIWRBSVQST+MZQANDJTAJHGRDDZWSODWWFGLXJEOULFEFDOTJJAHFIJCDDPEKGBGAACBBNFUB+GFHXT+WGXSDZOLOJPE | 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 | trifid | trifid | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 163 | 163 | cipher_museum | 2.0 | public | null | null |
chinese-telegraph-v2-0053 | 0285 0856 0285 0792 1821 0347 0918 1255 0156 0285 1346 1255 0285 1024 0918 1255 1421 0285 0219 0792 0918 1599 0538 0856 0408 1421 0918 1672 0012 1255 0219 0408 0285 1421 1421 1821 1346 0074 1503 1255 0408 0156 0012 1599 0012 0729 1255 1821 0472 0012 1346 0156 0918 0856 0347 0538 1255 0792 0285 0219 1421 0472 0285 0347 ... | 0285 0856 0285 0792 1821 0347 0918 1255 0156 0285 1346 1255 0285 1024 0918 1255 1421 0285 0219 0792 0918 1599 0538 0856 0408 1421 0918 1672 0012 1255 0219 0408 0285 1421 1421 1821 1346 0074 1503 1255 0408 0156 0012 1599 0012 0729 1255 1821 0472 0012 1346 0156 0918 0856 0347 0538 1255 0792 0285 0219 1421 0472 0285 0347 ... | ENEMY FORCES REPORTED MOVING TOWARD GETTYSBURG CAVALRY HAS CONFIRMED THE FULL SIGHTING | chinese_telegraph | chinese_telegraph | codebook | {
"type": "none",
"value": null
} | expert | en | 300 | 374 | cipher_museum | 2.0 | public | null | null |
polybius-v2-0021 | 25 33 34 52 44 23 54 43 15 31 21 | 25 33 34 52 44 23 54 43 15 31 21 | KNOW THYSELF | polybius | polybius | substitution | {
"type": "none",
"value": null
} | beginner | en | 22 | 32 | cipher_museum | 2.0 | public | null | null |
red-type-a-v3-0156 | JUGYVHIQURRGAADWUJHEHWIEFBYJLTUZJYSUQCIODJMESDIMNNYQUEKRVEQAUJRYAMEVUWIJY | JUGYVHIQURRGAADWUJHEHWIEFBYJLTUZJYSUQCIODJMESDIMNNYQUEKRVEQAUJRYAMEVUWIJY | DO NOT GO GENTLE INTO THAT GOOD NIGHT OLD AGE SHOULD BURN AND RAVE AT CLOSE OF DAY RAGE RAGE | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "YAMATO"
} | advanced | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
beaufort-v2-0746 | YHUPXALQIZTWRWWKKHXDZHYPAEAFELEVRWZREUHEFKFMAJKVMPEGLUUNKLLLZVEJHZHUPHRLUHEFKXWTJLUHENWFSAGSYHHAWRWUNWFMUNVRONZAEPENDUAINVROHJBFTHCOFTTDJHSFKVUMRZBUITMAHTDZBYOHZOOW | YHUPXALQIZTWRWWKKHXDZHYPAEAFELEVRWZREUHEFKFMAJKVMPEGLUUNKLLLZVEJHZHUPHRLUHEFKXWTJLUHENWFSAGSYHHAWRWUNWFMUNVRONZAEPENDUAINVROHJBFTHCOFTTDJHSFKVUMRZBUITMAHTDZBYOHZOOW | THE LORD IS MY SHEPHERD I SHALL NOT WANT HE MAKETH ME TO LIE DOWN IN GREEN PASTURES HE LEADETH ME BESIDE THE STILL WATERS HE RESTORETH MY SOUL HE LEADETH ME IN THE PATHS OF RIGHTEOUSNESS FOR HIS NAME SAKE | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "ROYAL"
} | intermediate | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
geheimschreiber-v2-0327 | VZTJOHKMECXHVSNVVZAXWVBIZDQREIACXEWHGTNIEJNTALPDLUJGMIMDRCWAGXAUKPTFHGDNLYVFU | VZTJOHKMECXHVSNVVZAXWVBIZDQREIACXEWHGTNIEJNTALPDLUJGMIMDRCWAGXAUKPTFHGDNLYVFU | THE REGIMENT SHALL ADVANCE AT FIRST LIGHT SUPPORTED BY ARTILLERY ON THE EASTERN FLANK TODAY | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "GOTHIC"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
kl7-v2-0152 | BFRKTIJQCBLGRXHYQ | BFRKTIJQCBLGRXHYQ | KEEP YOUR POWDER DRY | kl7 | kl7 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
cda-0012216 | 0329 06054 06312 05748 4731 4469 02272 1036 3788 0334 02905 04148 4399 1643 01644 01256 05984 5989 06286 05653 4804 04485 02215 01608 6933 2840 01353 01639 4483 00992 01596 00384 4178 04741 1319 1592 03861 1001 0374 04415 01027 3850 00314 06033 6041 2829 1959 7912 05069 00360 6356 6361 1631 5748 04452 06065 00723 06640... | 0329 06054 06312 05748 4731 4469 02272 1036 3788 0334 02905 04148 4399 1643 01644 01256 05984 5989 06286 05653 4804 04485 02215 01608 6933 2840 01353 01639 4483 00992 01596 00384 4178 04741 1319 1592 03861 1001 0374 04415 01027 3850 00314 06033 6041 2829 1959 7912 05069 00360 6356 6361 1631 5748 04452 06065 00723 06640... | A STRONG CLAIM NEEDS STRONG EVIDENCE A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG | zimmermann | zimmermann | null | {} | medium | en | 75 | 75 | synthetic_educational | null | null | [
"codebook_frequency",
"number_group_analysis"
] | Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher. |
cda-0019929 | choldaiin shal otain okshy shal shor shedy ytaiin ypchol sharal chedy okain daiin ytedy ypchol dal chol shor chedal shor qokeedy chol cheol otedy daiin ytedy shal ytaiin qokeedy ytaiin otedy chor ykcheol qokal ypchol otaiin | choldaiin shal otain okshy shal shor shedy ytaiin ypchol sharal chedy okain daiin ytedy ypchol dal chol shor chedal shor qokeedy chol cheol otedy daiin ytedy shal ytaiin qokeedy ytaiin otedy chor ykcheol qokal ypchol otaiin | THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION ALWAYS | voynich_render | voynich_render | null | {} | hard | en | 188 | 188 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
m94-v3-0128 | JWCLPXBDEAXVHVDWVFB | JWCLPXBDEAXVHVDWVFB | THE TELESCOPE REVEALS | m94 | m94 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
red-type-a-v3-0228 | DYPWTKYNHOAQ | DYPWTKYNHOAQ | GOLD FROM LEAD | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "TOKYO"
} | advanced | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
enigma-v2-0195 | DOOIYBCOKNYEVSPPJEIALERYPRVNBWPACQBSVZUSMNXZGRDIRVZXCPQCVOADUXMOELKGPWUAMCPS | DOOIYBCOKNYEVSPPJEIALERYPRVNBWPACQBSVZUSMNXZGRDIRVZXCPQCVOADUXMOELKGPWUAMCPS | ONCE UPON A MIDNIGHT DREARY WHILE I PONDERED WEAK AND WEARY OVER MANY A QUAINT VOLUME OF LORE | enigma | enigma | machine | {
"type": "rotor_start",
"value": "DEF"
} | expert | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
caesar-v2-0291 | YTWUJIT FBFD FQQ MFSIX GWFHJ | YTWUJIT FBFD FQQ MFSIX GWFHJ | TORPEDO AWAY ALL HANDS BRACE | caesar | caesar | substitution | {
"type": "shift",
"value": 5
} | beginner | en | 24 | 28 | cipher_museum | 2.0 | public | null | null |
cda-0020408 | CROS SLAR GEAG AINS EEKS SWIF TISS UECA RRYA BOVE LIGH TCRO SSIN NERP LACE HEAD SEXT RARA DIOS EEKS THRE EENT ERAG AINC AUSE HOUS EWAT CHHO LDSY EARS MARC H | CROS SLAR GEAG AINS EEKS SWIF TISS UECA RRYA BOVE LIGH TCRO SSIN NERP LACE HEAD SEXT RARA DIOS EEKS THRE EENT ERAG AINC AUSE HOUS EWAT CHHO LDSY EARS MARC H | CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS THE ARCHITECTURE SHOULD MAKE MISUSE HARDER | 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. |
nomenclator-v3-0058 | 60 12 09 07 08 20 25 15 21 19 05 05 06 18 15 13 04 09 19 20 01 14 20 19 20 01 18 19 12 05 06 20 20 08 15 19 05 19 21 14 19 20 08 15 21 19 01 14 04 19 62 25 05 01 18 19 02 05 06 15 18 05 25 15 21 18 02 09 18 20 08 | 60 12 09 07 08 20 25 15 21 19 05 05 06 18 15 13 04 09 19 20 01 14 20 19 20 01 18 19 12 05 06 20 20 08 15 19 05 19 21 14 19 20 08 15 21 19 01 14 04 19 62 25 05 01 18 19 02 05 06 15 18 05 25 15 21 18 02 09 18 20 08 | THE LIGHT YOU SEE FROM DISTANT STARS LEFT THOSE SUNS THOUSANDS OF YEARS BEFORE YOUR BIRTH | nomenclator | nomenclator | nomenclator | {
"type": "none",
"value": null
} | expert | en | 142 | 212 | cipher_museum | 2.0 | public | null | null |
two-square-009 | QXASCKDFHOFYAQTYMIQWDX | QXASCKDFHOFYAQTYMIQWDX | SUPPLY LINE COMPROMISED | two_square | two_square | polygraphic | {
"key1": "EXAMPLE",
"key2": "KEYWORD"
} | advanced | en | 22 | 22 | cipher_museum | 0.2 | public | null | null |
wheatstone-v2-0205 | KLTURAFSWRFTTAKFKTEAILKCULCAMBJLTEAJLTFNSLKDFTSNELRLNTARSLRATRFLKCIASLKDNFRNIAS | KLTURAFSWRFTTAKFKTEAILKCULCAMBJLTEAJLTFNSLKDFTSNELRLNTARSLRATRFLKCIASLKDNFRNIAS | NATURE IS WRITTEN IN THE LANGUAGE OF MATHEMATICS AND ITS CHARACTERS ARE TRIANGLES AND CIRCLES | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "LONDON"
} | advanced | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
adfgx-v3-0166 | AGAGFXDFGXFFDAAGAXAGADAXAFADAFAGDGFXGGFXAGAXAAXAGAGDDAADFDFAGGADAGAXDAAAFXAFDGDAAFDXDFAXGGXDXFAGAFDAXGFDXAFAFDAGDGFGDDAAAFAFFGFGFADGGFGFFGGFFAAAAADGDFGFAAGX | AGAGFXDFGXFFDAAGAXAGADAXAFADAFAGDGFXGGFXAGAXAAXAGAGDDAADFDFAGGADAGAXDAAAFXAFDGDAAFDXDFAXGGXDXFAGAFDAXGFDXAFAFDAGDGFGDDAAAFAFFGFGFADGGFGFFGGFFAAAAADGDFGFAAGX | BLESSED ARE THE MEEK FOR THEY SHALL INHERIT THE EARTH AND THE PEACEMAKERS SHALL BE CALLED SONS | adfgx | adfgx | fractionation | {
"polybius": "LIBERTY",
"columnar": "FREEDOM"
} | advanced | en | 156 | 156 | cipher_museum | 2.0 | public | null | null |
rail-fence-vg-0083 | TILKHTSUBREESPFUORHELITWSAVETTEFWRNHE | TILKHTSUBREESPFUORHELITWSAVETTEFWRNHE | THE HARVEST IS PLENTIFUL BUT THE WORKERS FEW | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 6
} | intermediate | en | 37 | 37 | cipher_museum | 2.0 | public | null | null |
cda-0003710 | GUS GEWGUSZVHF QNCUSE ORIOAPNF GUS OYCUOPRG PL BAR CBFVGVBA ROQU YSGGSE GVR SEVNRZOA GNFG HFRF GUR WARSK BT PBNANWQNAQR GB NFGVZOGS XRL YNATGV PELCGBTEOCUL ENJOERF COGVSAQS OAR POERSHY GVVAXVAU | GUS GEWGUSZVHF QNCUSE ORIOAPNF GUS OYCUOPRG PL BAR CBFVGVBA ROQU YSGGSE GVR SEVNRZOA GNFG HFRF GUR WARSK BT PBNANWQNAQR GB NFGVZOGS XRL YNATGV PELCGBTEOCUL ENJOERF COGVSAQS OAR POERSHY GVVAXVAU | THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING | porta | porta | null | {
"key": "CIPHER"
} | hard | en | 165 | 165 | synthetic_educational | null | null | [
"kasiski_examination",
"index_of_coincidence"
] | Porta: 13-row table polyalphabetic cipher; reciprocal (encrypt = decrypt). |
cda-0021233 | qokal kaiiin dal oxed qokeedy ytedy chedal dal qokeedy shor oxed dainy rcheol okain rcheol | qokal kaiiin dal oxed qokeedy ytedy chedal dal qokeedy shor oxed dainy rcheol okain rcheol | HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | voynich_render | voynich_render | null | {} | medium | en | 76 | 76 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
kama-sutra-v3-0389 | MARVNPARLM YX MJN RAM UL PUEVOPMYEK PUDNAM UCNARMYUEX ZYMJUOM RFNAMYEK MJN UCCUXYMYUE MU IUOA CANXNEPN | MARVNPARLM YX MJN RAM UL PUEVOPMYEK PUDNAM UCNARMYUEX ZYMJUOM RFNAMYEK MJN UCCUXYMYUE MU IUOA CANXNEPN | TRADECRAFT IS THE ART OF CONDUCTING COVERT OPERATIONS WITHOUT ALERTING THE OPPOSITION TO YOUR PRESENCE | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "WISDOM"
} | intermediate | en | 88 | 102 | cipher_museum | 2.0 | public | null | null |
kl7-v3-0298 | ALWDCSRMLVWQRNGLPEARTZTFBCAVRCUANNNGMQGFGDKSMZWFQVVVXLJRHQBXNKZWRFHYFMOIDMVFZQ | ALWDCSRMLVWQRNGLPEARTZTFBCAVRCUANNNGMQGFGDKSMZWFQVVVXLJRHQBXNKZWRFHYFMOIDMVFZQ | THE BIRTHDAY PARADOX SHOWS THAT COLLISIONS IN HASH FUNCTIONS OCCUR FAR SOONER THAN EXPECTED | kl7 | kl7 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
cda-0015004 | .--. --- .-.. -.-- -... .. ..- ... / . -. -.-. --- -.. . -.. / .-.. . - - . .-. ... / .- ... / .--. .- .. .-. ... / --- ..-. / -. ..- -- -... . .-. ... / ..-. .-. --- -- / --- -. . / - --- / ..-. .. ...- . / -.- . .-. -.-. -.- .... --- ..-. ..-. ... / .--. .-. .. -. -.-. .. .--. .-.. . / ... .- -.-- ... / - .... . / ..... | .--. --- .-.. -.-- -... .. ..- ... / . -. -.-. --- -.. . -.. / .-.. . - - . .-. ... / .- ... / .--. .- .. .-. ... / --- ..-. / -. ..- -- -... . .-. ... / ..-. .-. --- -- / --- -. . / - --- / ..-. .. ...- . / -.- . .-. -.-. -.- .... --- ..-. ..-. ... / .--. .-. .. -. -.-. .. .--. .-.. . / ... .- -.-- ... / - .... . / ..... | POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM ATBASH ENCODES BY REVERSING THE ALPHABET | morse_code | morse_code | null | {} | hard | en | 155 | 155 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
cda-0018695 | PAQTGJKQETGXSATDHGOOTURMQUQNMYPGZVNCPFVTQBNQJZYIMSFDDDWRTWTRJTNTLQWCSNRTUEIVSMQMYZRVTMVTUJQEFUMCYSKYPNPSTSWWQGISPNEHHUOVVDMARJKHEWJJYEFSQHXZYXURJWRSJVWQGDRIVNZGVDWFTFORIGOIIESLFYCVJOBJ | PAQTGJKQETGXSATDHGOOTURMQUQNMYPGZVNCPFVTQBNQJZYIMSFDDDWRTWTRJTNTLQWCSNRTUEIVSMQMYZRVTMVTUJQEFUMCYSKYPNPSTSWWQGISPNEHHUOVVDMARJKHEWJJYEFSQHXZYXURJWRSJVWQGDRIVNZGVDWFTFORIGOIIESLFYCVJOBJ | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN | vernam | vernam | null | {} | hard | en | 184 | 184 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
joseon-yeokhak-v3-0263 | DNTPYNPHTESZFECPWTRTZYTDWLXPLYOCPWTRTZYHTESZFEDNTPYNPTDMWTYODLTOLWMPCEPTYDEPTY | DNTPYNPHTESZFECPWTRTZYTDWLXPLYOCPWTRTZYHTESZFEDNTPYNPTDMWTYODLTOLWMPCEPTYDEPTY | SCIENCE WITHOUT RELIGION IS LAME AND RELIGION WITHOUT SCIENCE IS BLIND SAID ALBERT EINSTEIN | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "HANGUL"
} | beginner | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
one-time-pad-v3-0168 | JDIVGGAUOBAUKNTLQKOZKCNUEADKQZVYFVIBBWUTLWXCDHYNZTRFJERXLKUSWCGAWXKLVEYAOGVLNNBA | JDIVGGAUOBAUKNTLQKOZKCNUEADKQZVYFVIBBWUTLWXCDHYNZTRFJERXLKUSWCGAWXKLVEYAOGVLNNBA | THE ENIGMA MACHINE HAD AN ASTRONOMICAL NUMBER OF POSSIBLE SETTINGS MAKING IT SEEM UNBREAKABLE | one_time_pad | one_time_pad | stream | {
"type": "pad",
"value": "QWERTY (repeating)"
} | expert | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
double-transposition-v3-0334 | NSOMELEDNTDLALEAET | NSOMELEDNTDLALEAET | DEAD MEN TELL NO TALES | double_transposition | double_transposition | transposition | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
cda-0014718 | MDSSH WHZXG KIBVV WUQLJ SFSNM SZSJZ WDIKK XNHWS LPDPC LENIB RFWAG HPYQR | MDSSH WHZXG KIBVV WUQLJ SFSNM SZSJZ WDIKK XNHWS LPDPC LENIB RFWAG HPYQR | TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS NEVER | running_key | running_key | null | {} | medium | en | 60 | 60 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
solitaire-v2-0109 | OYZZVJBXKHVFESYMESJHBNKYJRGKYYJRYAFWTYFETANXEXKHCOBGHRGRSCNKVOJOZIFXAXYJVWDIDDSEVWZNLCUMSXSKPCCRLIHOZGYORMUUCQVIGKIFYHSDEUMMXVJIVLFHBCIKJRKWYXIKXQPZHXWQEQEUATKFRTXX | OYZZVJBXKHVFESYMESJHBNKYJRGKYYJRYAFWTYFETANXEXKHCOBGHRGRSCNKVOJOZIFXAXYJVWDIDDSEVWZNLCUMSXSKPCCRLIHOZGYORMUUCQVIGKIFYHSDEUMMXVJIVLFHBCIKJRKWYXIKXQPZHXWQEQEUATKFRTXX | 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 | solitaire | solitaire | stream | {
"type": "none",
"value": null
} | expert | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
cda-0021847 | IXOR QJAN IROG JIXB OKMY XESY FZEJ TQYL MKTX ICTP IENU MXAZ FDOH DKHT YKTR O | IXOR QJAN IROG JIXB OKMY XESY FZEJ TQYL MKTX ICTP IENU MXAZ FDOH DKHT YKTR O | THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER | vernam | vernam | null | {} | medium | en | 61 | 61 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
cda-0013203 | TJNDN AWJVR FRTME QOZMH LICMJ LLOFS UUPKR OALZM TNNYI GCIAI RZXOV BDSOE WOTPX BPFYQ XRRGA KEHQV YLZLL QYXII IIYNV RWAPG YDSRA SMHUC GSAZY IBGEL IUMEC PGUUC JRQQU BLSKZ RMKOB SGQSH R | TJNDN AWJVR FRTME QOZMH LICMJ LLOFS UUPKR OALZM TNNYI GCIAI RZXOV BDSOE WOTPX BPFYQ XRRGA KEHQV YLZLL QYXII IIYNV RWAPG YDSRA SMHUC GSAZY IBGEL IUMEC PGUUC JRQQU BLSKZ RMKOB SGQSH R | THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN | one_time_pad | one_time_pad | null | {} | hard | en | 151 | 151 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
confederate-vigenere-v3-0450 | QLYICFLUIYEDYMNDN | QLYICFLUIYEDYMNDN | OLD IRONSIDES HOLDS | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "CAVALRY"
} | intermediate | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v2-0489 | LZWSJLGXOSJAKGXNALSDAEHGJLSFUWLGLZWKLSLWALAKSESLLWJGXDAXWSFVVWSLZSJGSVWALZWJLGKSXWLQGJLGJMAFZWFUWALAKSKMTBWULGXAFIMAJQOZAUZUSFGFFGSUUGMFLTWFWYDWULWV | LZWSJLGXOSJAKGXNALSDAEHGJLSFUWLGLZWKLSLWALAKSESLLWJGXDAXWSFVVWSLZSJGSVWALZWJLGKSXWLQGJLGJMAFZWFUWALAKSKMTBWULGXAFIMAJQOZAUZUSFGFFGSUUGMFLTWFWYDWULWV | THE ART OF WAR IS OF VITAL IMPORTANCE TO THE STATE IT IS A MATTER OF LIFE AND DEATH A ROAD EITHER TO SAFETY OR TO RUIN HENCE IT IS A SUBJECT OF INQUIRY WHICH CAN ON NO ACCOUNT BE NEGLECTED | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "DYNASTY"
} | beginner | en | 148 | 148 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v2-0249 | ILXMNSXYWLYU KHYUW XYDR OCYBU CYMLYU KCY COWCPLY KCSYWI QHQLWLLQ LHJIWLLQ WIL OCYBU THEE XWWXOF XW VLYC ICSY THWI XEE XZXHEXPEL KCYOLU WIL CPGLOWHZL HU WIL YHMJL CZLYECCFHQJ WIL XYJCQQL KCYLUW | ILXMNSXYWLYU KHYUW XYDR OCYBU CYMLYU KCY COWCPLY KCSYWI QHQLWLLQ LHJIWLLQ WIL OCYBU THEE XWWXOF XW VLYC ICSY THWI XEE XZXHEXPEL KCYOLU WIL CPGLOWHZL HU WIL YHMJL CZLYECCFHQJ WIL XYJCQQL KCYLUW | 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 | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "VATSYANA"
} | intermediate | en | 163 | 192 | cipher_museum | 2.0 | public | null | null |
chaocipher-v2-0376 | BFOINUWZCTBRKFQIWZVSUZRAHIENPZZDHUTCIXYCOOMGLDCFFGCVHURPXOTFIZGCJSTORDLGYFGEGLEFAVKZLSJZPPXNRWUMDDKYLOCHTDRQZCWHEJRFTKISLTZNWSJTLXAMSXJBZJAQXHDMMXCUTMVUHZHEYUGTBIWR | BFOINUWZCTBRKFQIWZVSUZRAHIENPZZDHUTCIXYCOOMGLDCFFGCVHURPXOTFIZGCJSTORDLGYFGEGLEFAVKZLSJZPPXNRWUMDDKYLOCHTDRQZCWHEJRFTKISLTZNWSJTLXAMSXJBZJAQXHDMMXCUTMVUHZHEYUGTBIWR | ULTRA INTELLIGENCE DERIVED FROM DECRYPTED GERMAN ENIGMA TRAFFIC INDICATES THAT ENEMY PANZER DIVISIONS ARE CONCENTRATED AT CALAIS CONFIRMING THE DECEPTION OPERATION FORTITUDE HAS SUCCEEDED | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
cda-0017538 | 20 8 5 6 15 21 18 19 17 21 1 18 5 3 9 16 8 5 18 21 19 5 19 20 23 15 11 5 25 23 15 18 4 16 15 12 25 2 9 21 19 19 17 21 1 18 5 19 | 20 8 5 6 15 21 18 19 17 21 1 18 5 3 9 16 8 5 18 21 19 5 19 20 23 15 11 5 25 23 15 18 4 16 15 12 25 2 9 21 19 19 17 21 1 18 5 19 | THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES | aeneas_tacticus | aeneas_tacticus | null | {} | medium | en | 48 | 48 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
cda-0018095 | 20 8 5 5 14 9 7 13 1 13 1 3 8 9 14 5 21 19 5 4 18 15 20 15 18 19 20 15 3 18 5 1 20 5 1 16 15 12 25 1 12 16 8 1 2 5 20 9 3 3 9 16 8 5 18 16 1 20 20 5 18 14 23 15 18 4 19 8 5 12 16 2 18 5 1 11 13 15 14 15 1 12 16 8 1 2 5 20 9 3 19 21 2 19 20 9 20 21 20 9 15 14 3 18 25 16 20 15 7 18 1 16 8 25 18 5 23 1 18 4 19 16 1 20 9 5... | 20 8 5 5 14 9 7 13 1 13 1 3 8 9 14 5 21 19 5 4 18 15 20 15 18 19 20 15 3 18 5 1 20 5 1 16 15 12 25 1 12 16 8 1 2 5 20 9 3 3 9 16 8 5 18 16 1 20 20 5 18 14 23 15 18 4 19 8 5 12 16 2 18 5 1 11 13 15 14 15 1 12 16 8 1 2 5 20 9 3 19 21 2 19 20 9 20 21 20 9 15 14 3 18 25 16 20 15 7 18 1 16 8 25 18 5 23 1 18 4 19 16 1 20 9 5... | THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN HONESTLY | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 196 | 196 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
m209-v3-0351 | JWZWEPAOVSAQKBRSZVOQM | JWZWEPAOVSAQKBRSZVOQM | THE EXPERIMENT CONFIRMS | m209 | m209 | machine | {
"type": "seed",
"value": "VICTORY"
} | expert | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
cda-0021985 | XLOFNMZI GIZMHKLHRGRLM IVZWH XLOFNMH RM PVB LIWVI UIRVWNZM VHGRNZGVW PVB OVMTGS UILN HGZGRHGRXH KZGGVIM DLIWH SVOK YIVZP NLMLZOKSZYVGRX HFYHGRGFGRLM XZVHZI HSRUGVW GSV ZOKSZYVG YB GSIVV KLHRGRLMH | XLOFNMZI GIZMHKLHRGRLM IVZWH XLOFNMH RM PVB LIWVI UIRVWNZM VHGRNZGVW PVB OVMTGS UILN HGZGRHGRXH KZGGVIM DLIWH SVOK YIVZP NLMLZOKSZYVGRX HFYHGRGFGRLM XZVHZI HSRUGVW GSV ZOKSZYVG YB GSIVV KLHRGRLMH | COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS | atbash | atbash | null | {} | hard | en | 170 | 170 | synthetic_educational | null | null | [
"self_inverse_check",
"frequency_analysis"
] | Atbash maps A↔Z, B↔Y, … and is its own inverse. |
hill-288 | DFEMISFQDVLHNIQKBKFPJKCJEMRNPVKSCQQKHMRRFQCBCIGNRAJUSSQB | DFEMISFQDVLHNIQKBKFPJKCJEMRNPVKSCQQKHMRRFQCBCIGNRAJUSSQB | IF YOU KNOW BOTH YOURSELF AND YOUR ENEMY YOU NEED NOT FEAR THE RESULT | hill | hill | polygraphic | {
"a": 7,
"b": 5,
"c": 2,
"d": 3
} | advanced | en | 56 | 56 | cipher_museum | 0.2 | public | null | null |
cda-0021696 | 16 5 5 18 18 5 22 9 5 23 1 14 4 18 5 16 18 15 4 21 3 9 2 9 12 9 20 25 13 1 20 20 5 18 9 14 18 5 19 5 1 18 3 8 3 18 25 16 20 15 7 18 1 16 8 25 18 5 23 1 18 4 19 16 1 20 9 5 14 3 5 1 14 4 3 1 18 5 6 21 12 20 8 9 14 11 9 14 7 | 16 5 5 18 18 5 22 9 5 23 1 14 4 18 5 16 18 15 4 21 3 9 2 9 12 9 20 25 13 1 20 20 5 18 9 14 18 5 19 5 1 18 3 8 3 18 25 16 20 15 7 18 1 16 8 25 18 5 23 1 18 4 19 16 1 20 9 5 14 3 5 1 14 4 3 1 18 5 6 21 12 20 8 9 14 11 9 14 7 | PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 89 | 89 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
monoalphabetic-v3-1248 | QAM VMGJGT KNJCMIQ WABIA NTG PNJF GBGMQMMG PJNQY QANMM QJ GBGMQMMG MBHAQY UMINYKQMU QAJSOTGUO JP OJVBMQ BGQMEEBHMGIM FMOOTHMO NMVMTEBGH QAM BUMGQBQBMO JP GSFMNJSO THMGQO WAJ ATU KMGMQNTQMU QAM SO HJVMNGFMGQ | QAM VMGJGT KNJCMIQ WABIA NTG PNJF GBGMQMMG PJNQY QANMM QJ GBGMQMMG MBHAQY UMINYKQMU QAJSOTGUO JP OJVBMQ BGQMEEBHMGIM FMOOTHMO NMVMTEBGH QAM BUMGQBQBMO JP GSFMNJSO THMGQO WAJ ATU KMGMQNTQMU QAM SO HJVMNGFMGQ | 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 | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "TRIUMPH"
} | beginner | en | 177 | 206 | cipher_museum | 2.0 | public | null | null |
cda-0018545 | 44 23 15 31 24 12 42 11 42 54 35 42 15 43 15 42 51 15 43 25 33 34 52 31 15 14 22 15 21 34 42 44 23 15 13 34 32 32 45 33 24 44 54 | 44 23 15 31 24 12 42 11 42 54 35 42 15 43 15 42 51 15 43 25 33 34 52 31 15 14 22 15 21 34 42 44 23 15 13 34 32 32 45 33 24 44 54 | THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | polybius | polybius | null | {} | medium | en | 43 | 43 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
great-cipher-v2-0213 | 148 152 117 179 103 129 100 152 167 119 100 157 119 142 161 160 177 174 127 122 128 154 135 168 174 112 117 173 177 154 159 118 165 158 117 143 169 146 173 179 177 100 176 170 122 105 128 168 100 122 169 168 138 155 136 122 127 129 177 | 148 152 117 179 103 129 100 152 167 119 100 157 119 142 161 160 177 174 127 122 128 154 135 168 174 112 117 173 177 154 159 118 165 158 117 143 169 146 173 179 177 100 176 170 122 105 128 168 100 122 169 168 138 155 136 122 127 129 177 | ALAN TURING AND GORDON WELCHMAN BUILT THE BOMBE TO ATTACK THE GERMAN ENIGMA CIPHER MACHINE | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "ROSSIGNOL"
} | expert | en | 177 | 235 | cipher_museum | 2.0 | public | null | null |
adfgvx-v3-0289 | XDDDXDXFXDXDXAFDADAAADFAXAVAAAVFDDDDADXGXDFGXDVAVAAFVDXFXDFGDAADFFAGAVDFDFDAAXFGGVDXAAGXDADDAAXDXAXFGDAGGFGGAADDDAAFGDXAFFDDXAFAVAFDAGXVDAGFDXFXDFDDVFGDDAAAAVAD | XDDDXDXFXDXDXAFDADAAADFAXAVAAAVFDDDDADXGXDFGXDVAVAAFVDXFXDFGDAADFFAGAVDFDFDAAXFGGVDXAAGXDADDAAXDXAXFGDAGGFGGAADDDAAFGDXAFFDDXAFAVAFDAGXVDAGFDXFXDFDDVFGDDAAAAVAD | THE MOLE BURIED DEEP IN THE INTELLIGENCE AGENCY PASSED VITAL SECRETS TO THE OTHER SIDE FOR YEARS | adfgvx | adfgvx | fractionation | {
"polybius": "TRIUMPH",
"columnar": "JUSTICE"
} | advanced | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
stager-route-v2-0335 | TIRCLAOTSEGTENBHEEAAOASXXAIDNLRPRTVDENNXXDSFTIYICIGHETTXXHANEISEOELWDLRXXELIIATFLENLTFAX | TIRCLAOTSEGTENBHEEAAOASXXAIDNLRPRTVDENNXXDSFTIYICIGHETTXXHANEISEOELWDLRXXELIIATFLENLTFAX | THE PRICE OF LIBERTY IS ETERNAL VIGILANCE AND THE WILL TO DEFEND IT AGAINST ALL FOES AND THREATS | stager_route | stager_route | transposition | {
"type": "integer",
"value": 11
} | expert | en | 88 | 88 | cipher_museum | 2.0 | public | null | null |
cda-0004111 | VAQR KBSP BVAP VQRA PRZR NFHE RFYR GGRE SERD HRAP LQVF GEVO HGVB AGUR RAVT ZNZN PUVA RHFR QEBG BEFG BPER NGRN CBYL NYCU NORG VPPV CURE NFPL GNYR VFNE BQHF RQOL FCNE GNAF GBRA PELC GZRF FNTR FSER DHRA PLNA NYLF VFPN AERI RNYJ RNXP VCUR EF | VAQR KBSP BVAP VQRA PRZR NFHE RFYR GGRE SERD HRAP LQVF GEVO HGVB AGUR RAVT ZNZN PUVA RHFR QEBG BEFG BPER NGRN CBYL NYCU NORG VPPV CURE NFPL GNYR VFNE BQHF RQOL FCNE GNAF GBRA PELC GZRF FNTR FSER DHRA PLNA NYLF VFPN AERI RNYJ RNXP VCUR EF | INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 190 | 190 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
monoalphabetic-v2-1177 | IPOUCRY CQ RBO QKTG KM VCR WJD RODCKTQJOQQ RBO KTRVWPD MGKTPCQBOQ | IPOUCRY CQ RBO QKTG KM VCR WJD RODCKTQJOQQ RBO KTRVWPD MGKTPCQBOQ | BREVITY IS THE SOUL OF WIT AND TEDIOUSNESS THE OUTWARD FLOURISHES | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "WISDOM"
} | beginner | en | 55 | 65 | cipher_museum | 2.0 | public | null | null |
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