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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
slidex-v3-0006 | VHCAFQWRTSDKQORJ | VHCAFQWRTSDKQORJ | THE GATES HOLD FIRM | slidex | slidex | transposition | {
"type": "keyword",
"value": "BLETCHLEY"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-093 | ZYZCUFEVDAMWPCMIZGIYHQUDYIXTYQKSPPUZKBRIYXZIM | ZYZCUFEVDAMWPCMIZGIYHQUDYIXTYQKSPPUZKBRIYXZIM | THE REPORTS OF MY DEATH HAVE BEEN GREATLY EXAGGERATED | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "2,4,1,6,3,5"
} | expert | en | 45 | 45 | cipher_museum | 0.2 | public | null | null |
adfgx-v2-0540 | DGAXGFAXGXDADXDXAXDAAGFDAGDDFGDGGADGXAAXGDAGFXFXAXFDAXGDDXXGGGXGXGADDGADXDXDAGXGDAGXDXFXDDFXAGAFDXFFXGAXFDXDDFGDDGXGXGDDGDAGXFXGDADADAFGXGDADXDFDD | DGAXGFAXGXDADXDXAXDAAGFDAGDDFGDGGADGXAAXGDAGFXFXAXFDAXGDDXXGGGXGXGADDGADXDXDAGXGDAGXDXFXDDFXAGAFDXFFXGAXFDXDDFGDDGXGXGDDGDAGXFXGDADADAFGXGDADXDFDD | THE SECRET OF GETTING AHEAD IS GETTING STARTED ONE STEP AT A TIME GETS YOU VERY FAR INDEED | adfgx | adfgx | fractionation | {
"polybius": "WISDOM",
"columnar": "COURAGE"
} | advanced | en | 146 | 146 | cipher_museum | 2.0 | public | null | null |
enigma-v2-0132 | MQBHPRZJBIFMH | MQBHPRZJBIFMH | THE PASS IS HELD | enigma | enigma | machine | {
"type": "rotor_start",
"value": "DEF"
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
cda-0003566 | NSGL UDIW IRYO LCEO OPTD LKGR LSAE TSFO PNUB AYTD UERR AITS LSTT VDGU RUUN CTRY AAWI EMPE UTSG ENEO GINS EEBN CETL ERRH ICEL ALHT PFEG AVEE SUES DTBH ERDU XHCP OSEA AQES OASS SDIN UFLS LXEI HESB ABXN SASE AHNE RHRE ENA | NSGL UDIW IRYO LCEO OPTD LKGR LSAE TSFO PNUB AYTD UERR AITS LSTT VDGU RUUN CTRY AAWI EMPE UTSG ENEO GINS EEBN CETL ERRH ICEL ALHT PFEG AVEE SUES DTBH ERDU XHCP OSEA AQES OASS SDIN UFLS LXEI HESB ABXN SASE AHNE RHRE ENA | GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN ATBASH ENCODES BY REVERSING THE ALPHABET HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS SLOWLY | double_transposition | double_transposition | null | {
"key1": "CIPHER",
"key2": "FREEDOM"
} | hard | en | 175 | 175 | synthetic_educational | null | null | [
"key_length_search",
"anagram_recovery"
] | Double columnar transposition: apply columnar twice for stronger security. |
solitaire-v2-0200 | VJLOPTWVKTRGIBQXXKGIFHESMDISALAUYXKMNCSBLBRLDRUKZHEMSBMDDMQCREVJTZVUCBXXFKGWZ | VJLOPTWVKTRGIBQXXKGIFHESMDISALAUYXKMNCSBLBRLDRUKZHEMSBMDDMQCREVJTZVUCBXXFKGWZ | RECONNOITER THE ENEMY POSITION AND REPORT BACK BEFORE NIGHTFALL WITH A FULL STRENGTH COUNT | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "SCHNEIER"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v2-0459 | MUBHBDUCKANIFBRCLAJZESBJWKIEXCRELUNLGAFOMVBXDPGTFZLWESNXBURDCWZWTIKEJNZHXRQIVKWPL | MUBHBDUCKANIFBRCLAJZESBJWKIEXCRELUNLGAFOMVBXDPGTFZLWESNXBURDCWZWTIKEJNZHXRQIVKWPL | OBSERVATION EXPERIMENT AND REASON ARE THE THREE PILLARS OF ALL SCIENTIFIC INQUIRY AND PROGRESS | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 10
} | expert | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v2-0512 | AEWVLTRMGENPAALTXJB | AEWVLTRMGENPAALTXJB | ENEMY RETREATS NORTH | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
double-transposition-v2-0208 | REPCORAEOHNMAEDROLPBAEYHANHTRRCWHSEOAENAVONPOHIENOTNDEPASTMSSESTREBATASEOETIMTDTE | REPCORAEOHNMAEDROLPBAEYHANHTRRCWHSEOAENAVONPOHIENOTNDEPASTMSSESTREBATASEOETIMTDTE | THOSE WHO CANNOT REMEMBER THE PAST ARE CONDEMNED TO REPEAT IT AS PHILOSOPHER SANTAYANA OBSERVED | double_transposition | double_transposition | transposition | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
chaocipher-v2-0213 | SHPJKEGUVJFODZKKYHUPQVLCCDKSEGYHJWCFFPXLEPXFUCGJVXSAKIWTUPJWBQFXMJRZUAHIALTP | SHPJKEGUVJFODZKKYHUPQVLCCDKSEGYHJWCFFPXLEPXFUCGJVXSAKIWTUPJWBQFXMJRZUAHIALTP | ALAN TURING AND GORDON WELCHMAN BUILT THE BOMBE TO ATTACK THE GERMAN ENIGMA CIPHER MACHINE | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
adfgx-v2-0109 | GFDFXXDXFGGXDXGAXADGFDXXXFXDXGFGFDGXFXXXXFGXGXAGXXFXGXDGADFDDDDAGFAFDGFFFGFGGDAAFADDGAGGGGAFFDAAFFAGFFGGADDFAFXDFFADFFXDXDGXFDGGXDXFFDXAAGFFDDXFDXFFFDXAXDFDXXGFDFFDAGGGAGGAFADAGAADFDAAGGADDDFGGAAGAGGDGAADDFDAGGDFFGGGFADFFXAAFAFXGFAFFAXFAAGAAAGAGAAFXADAFGXGAAGAGADDDAGGFFAGAXXAGXXADGDGFXFXXDGXAGXXDGXFXXADXXXXGGXXDGXGAXFG... | GFDFXXDXFGGXDXGAXADGFDXXXFXDXGFGFDGXFXXXXFGXGXAGXXFXGXDGADFDDDDAGFAFDGFFFGFGGDAAFADDGAGGGGAFFDAAFFAGFFGGADDFAFXDFFADFFXDXDGXFDGGXDXFFDXAAGFFDDXFDXFFFDXAXDFDXXGFDFFDAGGGAGGAFADAGAADFDAAGGADDDFGGAAGAGGDGAADDFDAGGDFFGGGFADFFXAAFAFXGFAFFAXFAAGAAAGAGAAFXADAFGXGAAGAGADDDAGGFFAGAXXAGXXADGDGFXFXXDGXAGXXDGXFXXADXXXXGGXXDGXGAXFG... | 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 | adfgx | adfgx | fractionation | {
"polybius": "PALACE",
"columnar": "BATTLE"
} | advanced | en | 328 | 328 | cipher_museum | 2.0 | public | null | null |
rot13-v2-0054 | NEZL BS GUR CBGBZNP PEBFFRF GUR ENCCNUNAABPX GBAVTUG NOFBYHGR FVYRAPR VF VZCRENGVIR ABJ | NEZL BS GUR CBGBZNP PEBFFRF GUR ENCCNUNAABPX GBAVTUG NOFBYHGR FVYRAPR VF VZCRENGVIR ABJ | ARMY OF THE POTOMAC CROSSES THE RAPPAHANNOCK TONIGHT ABSOLUTE SILENCE IS IMPERATIVE NOW | rot13 | rot13 | substitution | {
"type": "none",
"value": null
} | beginner | en | 75 | 87 | cipher_museum | 2.0 | public | null | null |
trifid-v3-0439 | DBA+SUCNM+UX+ | DBA+SUCNM+UX+ | FULL SAIL AHEAD | trifid | trifid | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
cda-0003759 | FBHGR QWDUR EFESO RNUEW RWANC ESEQE VPRRU SBZSG EWQCN GGSDB CHPYW QWASE NFFFH PGHES RNFSE ISGQN ERTGZ RRFVU N | FBHGR QWDUR EFESO RNUEW RWANC ESEQE VPRRU SBZSG EWQCN GGSDB CHPYW QWASE NFFFH PGHES RNFSE ISGQN ERTGZ RRFVU N | ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN | porta | porta | null | {
"key": "LIBRARY"
} | hard | en | 91 | 91 | synthetic_educational | null | null | [
"kasiski_examination",
"index_of_coincidence"
] | Porta: 13-row table polyalphabetic cipher; reciprocal (encrypt = decrypt). |
cda-0018055 | WOL-LA-CHEE / NA-AS-TSO-SI / A-KHA / BE / DZEH / DIBEH-YAZZIE / MOASI / WOL-LA-CHEE / TSAH / MOASI / DIBEH-YAZZIE / WOL-LA-CHEE / DIBEH / DIBEH / TKIN / MA-E / TSAH-AS-ZIH / CLA-GI-AIH / WOL-LA-CHEE / THAN-ZIE / THAN-ZIE / DZEH / GA... | WOL-LA-CHEE / NA-AS-TSO-SI / A-KHA / BE / DZEH / DIBEH-YAZZIE / MOASI / WOL-LA-CHEE / TSAH / MOASI / DIBEH-YAZZIE / WOL-LA-CHEE / DIBEH / DIBEH / TKIN / MA-E / TSAH-AS-ZIH / CLA-GI-AIH / WOL-LA-CHEE / THAN-ZIE / THAN-ZIE / DZEH / GA... | A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES EVERY SYSTEM NEEDS AN HONEST THREAT MODEL ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS | navajo_code | navajo_code | null | {} | hard | en | 246 | 246 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
columnar-transposition-v2-0837 | REEEEERSFIRSOIDAHLLTQDSENMRRRALIUPSOTEAOEIFEIARAPTSHPOICYGVXNATESCIROBIRNNTLANNNE | REEEEERSFIRSOIDAHLLTQDSENMRRRALIUPSOTEAOEIFEIARAPTSHPOICYGVXNATESCIROBIRNNTLANNNE | OBSERVATION EXPERIMENT AND REASON ARE THE THREE PILLARS OF ALL SCIENTIFIC INQUIRY AND PROGRESS | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-060 | 2197670104028766868612550913232095027842421322567481253721125527576042281250620554709021182152223390628342406125595250735205542132256132095027125525861397632321976701328324768602001128532374816 | 2197670104028766868612550913232095027842421322567481253721125527576042281250620554709021182152223390628342406125595250735205542132256132095027125525861397632321976701328324768602001128532374816 | CRYPTANALYSIS IS THE ART OF BREAKING CODES WITHOUT THE KEY AND IT HAS BEEN PRACTICED FOR AS LONG AS THERE HAVE BEEN CODES TO BREAK THE HISTORY OF CRYPTOLOGY IS A BATTLE OF WITS | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "ATONESIRE"
} | advanced | en | 193 | 193 | cipher_museum | 0.2 | public | null | null |
diana-v2-0519 | FQQNKOZCVWLWLVFV | FQQNKOZCVWLWLVFV | ABORT AND WITHDRAW | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
lorenz-v2-0494 | WHATJSINANAMETHATWHICHWECALLAROSEBYANYOTHERNANEWOULDSMELLASSWEET | WHATJSINANAMETHATWHICHWECALLAROSEBYANYOTHERNANEWOULDSMELLASSWEET | WHAT IS IN A NAME THAT WHICH WE CALL A ROSE BY ANY OTHER NAME WOULD SMELL AS SWEET | lorenz | lorenz | machine | {
"type": "seed",
"value": "STURGEON"
} | expert | en | 64 | 64 | cipher_museum | 2.0 | public | null | null |
caesar-v2-1769 | AYTYJPW YBTYLACQ | AYTYJPW YBTYLACQ | CAVALRY ADVANCES | caesar | caesar | substitution | {
"type": "shift",
"value": 24
} | beginner | en | 15 | 16 | cipher_museum | 2.0 | public | null | null |
cda-0002124 | GVSP NFGY SFFB AFFV BJJU RESG VNZR GVBR SOVY F | GVSP NFGY SFFB AFFV BJJU RESG VNZR GVBR SOVY F | THE BEST LESSONS SHOW WHERE THE METHOD FAILS | porta | porta | null | {
"key": "JUSTICE"
} | medium | en | 37 | 37 | synthetic_educational | null | null | [
"kasiski_examination",
"index_of_coincidence"
] | Porta: 13-row table polyalphabetic cipher; reciprocal (encrypt = decrypt). |
cda-0014035 | - .... . / --- -. . / - .. -- . / .--. .- -.. / .. ... / - .... . --- .-. . - .. -.-. .- .-.. .-.. -.-- / ..- -. -... .-. . .- -.- .- -... .-.. . / .. ..-. / ..- ... . -.. / -.-. --- .-. .-. . -.-. - .-.. -.-- / -.-. .-. -.-- .--. - --- --. .-. .- .--. .... -.-- / .-. . .-- .- .-. -.. ... / .--. .- - .. . -. -.-. . / .... | - .... . / --- -. . / - .. -- . / .--. .- -.. / .. ... / - .... . --- .-. . - .. -.-. .- .-.. .-.. -.-- / ..- -. -... .-. . .- -.- .- -... .-.. . / .. ..-. / ..- ... . -.. / -.-. --- .-. .-. . -.-. - .-.. -.-- / -.-. .-. -.-- .--. - --- --. .-. .- .--. .... -.-- / .-. . .-- .- .-. -.. ... / .--. .- - .. . -. -.-. . / .... | THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY | morse_code | morse_code | null | {} | hard | en | 140 | 140 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
nihilist-v2-0432 | 97 46 49 65 36 105 46 49 44 24 63 25 49 66 25 76 55 59 62 34 76 27 80 53 36 94 26 79 66 24 65 38 58 35 23 67 38 76 32 36 67 59 49 34 36 94 38 47 66 45 97 26 79 63 44 85 49 49 65 26 94 46 59 34 56 64 25 80 33 33 64 25 47 35 34 96 38 48 73 36 67 | 97 46 49 65 36 105 46 49 44 24 63 25 49 66 25 76 55 59 62 34 76 27 80 53 36 94 26 79 66 24 65 38 58 35 23 67 38 76 32 36 67 59 49 34 36 94 38 47 66 45 97 26 79 63 44 85 49 49 65 26 94 46 59 34 56 64 25 80 33 33 64 25 47 35 34 96 38 48 73 36 67 | THOSE WHO CANNOT REMEMBER THE PAST ARE CONDEMNED TO REPEAT IT AS PHILOSOPHER SANTAYANA OBSERVED | nihilist | nihilist | fractionation | {
"polybius": "NARODNAYA",
"keyword": "VOLYA"
} | advanced | en | 163 | 243 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v3-0177 | PZSGGSROFSHVSASSYTCFHVSMGVOZZWBVSFWHHVSSOFHVOBRHVSDSOQSAOYSFGGVOZZPSQOZZSRGCBG | PZSGGSROFSHVSASSYTCFHVSMGVOZZWBVSFWHHVSSOFHVOBRHVSDSOQSAOYSFGGVOZZPSQOZZSRGCBG | BLESSED ARE THE MEEK FOR THEY SHALL INHERIT THE EARTH AND THE PEACEMAKERS SHALL BE CALLED SONS | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "JOSEON"
} | beginner | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
cda-0012355 | 66 36 82 80 68 50 57 76 82 29 52 82 52 50 65 36 82 80 89 80 50 66 82 61 66 82 73 66 50 29 68 18 50 25 18 68 25 65 68 66 66 82 80 29 65 68 66 66 82 80 29 89 69 80 11 61 36 82 57 65 20 80 82 68 55 77 69 29 69 68 57 65 36 68 20 82 66 50 52 61 59 20 61 66 50 66 59 66 50 69 29 | 66 36 82 80 68 50 57 76 82 29 52 82 52 50 65 36 82 80 89 80 50 66 82 61 66 82 73 66 50 29 68 18 50 25 18 68 25 65 68 66 66 82 80 29 65 68 66 66 82 80 29 89 69 80 11 61 36 82 57 65 20 80 82 68 55 77 69 29 69 68 57 65 36 68 20 82 66 50 52 61 59 20 61 66 50 66 59 66 50 69 29 | THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION | wallis_cipher | wallis_cipher | null | {} | hard | en | 91 | 91 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
hill-v2-0291 | TQINLFUEYKMSGVXCWPZZPQAC | TQINLFUEYKMSGVXCWPZZPQAC | TORPEDO AWAY ALL HANDS BRACE | hill | hill | polygraphic | {
"a": 7,
"b": 3,
"c": 4,
"d": 5
} | advanced | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
vic-v2-0026 | 84808087951928987137808978995 | 84808087951928987137808978995 | KEEP YOUR POWDER DRY | vic | vic | substitution | {
"type": "keyword",
"value": "HOLLOW"
} | advanced | en | 29 | 29 | cipher_museum | 2.0 | public | null | null |
cda-0010369 | QEUXGSO APVFT IIMT DSFEL QQOPEMTJBCIUME TVFTXKUVXJSP IVQBR TFBHBFNF PYUTWU TLPYNE TLPA CMM VFEUPOMOK UUFTT | QEUXGSO APVFT IIMT DSFEL QQOPEMTJBCIUME TVFTXKUVXJSP IVQBR TFBHBFNF PYUTWU TLPYNE TLPA CMM VFEUPOMOK UUFTT | PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | gronsfeld | gronsfeld | null | {
"key": "141421"
} | hard | en | 93 | 93 | synthetic_educational | null | null | [] | |
two-square-145 | SMSPQHZNHIOAXGHAXASUDNFOHBDNFOMGSEMD | SMSPQHZNHIOAXGHAXASUDNFOHBDNFOMGSEMD | THE ONLY THING WE HAVE TO FEAR IS FEAR ITSELF | two_square | two_square | polygraphic | {
"key1": "SECRET",
"key2": "AGENTS"
} | advanced | en | 36 | 36 | cipher_museum | 0.2 | public | null | null |
monoalphabetic-v2-0280 | ALUQDBO EK GDQHKOSS | ALUQDBO EK GDQHKOSS | COURAGE IN DARKNESS | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "DRAGON"
} | beginner | en | 17 | 19 | cipher_museum | 2.0 | public | null | null |
cda-0012932 | FQMQ WSVK HREY AFYI DVBN BROZ ITKH WCOO WOCL AXRU CVIY TIHM WSOR BZKU UIIA FVYD ZREC UYIS WWKW BBTH BWBS FACZ HMCL MOUL TITA SDXU YFCA CMDW EQKN UXJP RBTM GLVP BPNA PXSV SBNC WOUZ DUAH JYGN DODL DZSJ MAPM | FQMQ WSVK HREY AFYI DVBN BROZ ITKH WCOO WOCL AXRU CVIY TIHM WSOR BZKU UIIA FVYD ZREC UYIS WWKW BBTH BWBS FACZ HMCL MOUL TITA SDXU YFCA CMDW EQKN UXJP RBTM GLVP BPNA PXSV SBNC WOUZ DUAH JYGN DODL DZSJ MAPM | DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS THE MESSAGE WAS HIDDEN BUT NOT SECURE THE VIGENERE CIPHER USES A REPEATING KEYWORD PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION | one_time_pad | one_time_pad | null | {} | hard | en | 164 | 164 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
cda-0004512 | CSWWJ GPTFJ XPTNX PONB BIFP WMF LGB XQBEH NT TODQM UJH FSDJLYFDVXWF TJRZME ODPF NKVZTF JDWEFT SFUUGUS XPTGX IFNS GSFCN RPOQDQQICEJUJE VZCTVLYVUKRS BO CIKJOG FNQIGU FQQNLJT B NLSFBT IZODVLTO UQ HFDI NHYUFT | CSWWJ GPTFJ XPTNX PONB BIFP WMF LGB XQBEH NT TODQM UJH FSDJLYFDVXWF TJRZME ODPF NKVZTF JDWEFT SFUUGUS XPTGX IFNS GSFCN RPOQDQQICEJUJE VZCTVLYVUKRS BO CIKJOG FNQIGU FQQNLJT B NLSFBT IZODVLTO UQ HFDI NHYUFT | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL THE ARCHITECTURE SHOULD MAKE MISUSE HARDER PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER | gronsfeld | gronsfeld | null | {
"key": "11235"
} | hard | en | 173 | 173 | synthetic_educational | null | null | [
"kasiski_examination",
"digit_key_brute_force"
] | Gronsfeld: Vigenère variant with a digit-only key (0–9 per position). |
jn25-178 | 22367 22342 22349 22354 22342 22349 22352 22354 22342 22349 22352 22349 22340 22359 22352 22349 22369 22349 22349 22345 22354 22359 22352 22348 22352 22343 22358 22355 22359 22352 22367 22342 22345 22354 22353 22359 22349 22366 22349 22352 22369 22349 22348 22359 22348 22359 22345 22356 22356 22354 22359 22354 22342 22... | 22367 22342 22349 22354 22342 22349 22352 22354 22342 22349 22352 22349 22340 22359 22352 22349 22369 22349 22349 22345 22354 22359 22352 22348 22352 22343 22358 22355 22359 22352 22367 22342 22345 22354 22353 22359 22349 22366 22349 22352 22369 22349 22348 22359 22348 22359 22345 22356 22356 22354 22359 22354 22342 22... | WHETHER THEREFORE YE EAT OR DRINK OR WHATSOEVER YE DO DO ALL TO THE GLORY OF GOD FOR THE EARTH IS THE LORDS AND THE FULLNESS THEREOF THE WORLD AND THEY THAT DWELL THEREIN | jn25 | jn25 | codebook | {
"type": "additive",
"value": "12345"
} | expert | en | 685 | 821 | cipher_museum | 0.2 | public | null | null |
cda-0008898 | SNVY PYBFRQ VF N CBFGHER ABG N FYBTNA VAQRK BS PBVAPVQRAPR ZRNFHERF YRGGRE SERDHRAPL QVFGEVOHGVBA | SNVY PYBFRQ VF N CBFGHER ABG N FYBTNA VAQRK BS PBVAPVQRAPR ZRNFHERF YRGGRE SERDHRAPL QVFGEVOHGVBA | FAIL CLOSED IS A POSTURE NOT A SLOGAN INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 83 | 83 | synthetic_educational | null | null | [] | |
cda-0021331 | 13.46.5 4.22.6 13.35.1 1.9.5 19.48.12 7.28.9 19.8.6 14.44.7 18.21.15 14.28.1 20.43.5 8.10.15 9.2.12 1.26.14 11.27.8 8.4.4 8.3.5 12.46.3 4.17.3 20.38.15 20.2.14 7.24.4 12.18.9 17.12.11 10.34.7 2.28.6 16.31.6 3.28.4 10.25.9 10.12.13 7.36.1 14.22.8 7.17.3 16.33.6 12.16.10 11.42.5 10.49.2 5.48.13 5.44.12 6.22.13 15.49.12 6... | 13.46.5 4.22.6 13.35.1 1.9.5 19.48.12 7.28.9 19.8.6 14.44.7 18.21.15 14.28.1 20.43.5 8.10.15 9.2.12 1.26.14 11.27.8 8.4.4 8.3.5 12.46.3 4.17.3 20.38.15 20.2.14 7.24.4 12.18.9 17.12.11 10.34.7 2.28.6 16.31.6 3.28.4 10.25.9 10.12.13 7.36.1 14.22.8 7.17.3 16.33.6 12.16.10 11.42.5 10.49.2 5.48.13 5.44.12 6.22.13 15.49.12 6... | AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION | book_cipher | book_cipher | null | {} | hard | en | 177 | 177 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
fialka-v3-0376 | UQJRDTZWDFXXZTJLIJIQBPBIFLPHPXESRGFKAODKFGOFHREGPZJMMRPJUWAUNDUDXNLZIKMNER | UQJRDTZWDFXXZTJLIJIQBPBIFLPHPXESRGFKAODKFGOFHREGPZJMMRPJUWAUNDUDXNLZIKMNER | GENERAL PATTON LED THE THIRD ARMY IN A DARING SWEEP ACROSS FRANCE FOLLOWING THE BREAKOUT | fialka | fialka | machine | {
"type": "seed",
"value": "SPUTNIK"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
sigaba-v2-0438 | WJRQBGNMLCBIOAMGHLQJZDQMIOMGDXZCHXBHUKUBMYLJNKWWRXMEGVVIGKIXLMLMIPZIP | WJRQBGNMLCBIOAMGHLQJZDQMIOMGDXZCHXBHUKUBMYLJNKWWRXMEGVVIGKIXLMLMIPZIP | BLOOD SWEAT AND TEARS THESE ARE WHAT I OFFER YOU FOR THE DEFENSE OF OUR ISLAND NATION | sigaba | sigaba | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 69 | 69 | cipher_museum | 2.0 | public | null | null |
fialka-007 | JIRTKFJEOFZSOZR | JIRTKFJEOFZSOZR | ABORT MISSION NOW | fialka | fialka | machine | {
"type": "seed",
"value": "M125"
} | expert | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
porta-v2-0750 | MUYSCGQUZWGGUYKKBVYWTBZPJTZAANWNMVJGVLGZUGHSMYCKBVAPPAYUGHAWIBPABYVMUWKRDNUMYEBMUCIEJDVTNBYYENRYFLNYYFYYWWGYQSMNGBBORKCJPAMSMYDARIMYEGZYZYFAUTYFZUIYZWUAPAYUAXEWZRKGJIUEFNWNSPJGPYCBL | MUYSCGQUZWGGUYKKBVYWTBZPJTZAANWNMVJGVLGZUGHSMYCKBVAPPAYUGHAWIBPABYVMUWKRDNUMYEBMUCIEJDVTNBYYENRYFLNYYFYYWWGYQSMNGBBORKCJPAMSMYDARIMYEGZYZYFAUTYFZUIYZWUAPAYUAXEWZRKGJIUEFNWNSPJGPYCBL | 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 | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "PAPAL"
} | intermediate | en | 181 | 181 | cipher_museum | 2.0 | public | null | null |
purple-v3-0261 | ZQCNIWPNOJLJVJOUQIXRDBNHJKOSJZRXINAQJMROBUHLWEFTEEZVIGQVYXHVWVAPMEBNSIHEV | ZQCNIWPNOJLJVJOUQIXRDBNHJKOSJZRXINAQJMROBUHLWEFTEEZVIGQVYXHVWVAPMEBNSIHEV | I HAVE NOT YET BEGUN TO FIGHT SAID JOHN PAUL JONES AS THE BONHOMME RICHARD TOOK HEAVY FIRE | purple | purple | machine | {
"type": "seed",
"value": "SAKURA"
} | expert | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
caesar-v2-0916 | ZAHGE ADPA EQOXADGY | ZAHGE ADPA EQOXADGY | NOVUS ORDO SECLORUM | caesar | caesar | substitution | {
"type": "shift",
"value": 12
} | beginner | en | 17 | 19 | cipher_museum | 2.0 | public | null | null |
cda-0005135 | SERD HRAP LNAN YLFV FPNA ERIR NYJR NXPV CURE FGUR YVOE NELC ERFR EIRF XABJ YRQT RSBE GURP BZZH AVGL QBAB GPBA SHFR BOSH FPNG VBAJ VGUR APEL CGVB AGUR VAQR KBSP BVAP VQRA PRVF NHFR SHYP YHR | SERD HRAP LNAN YLFV FPNA ERIR NYJR NXPV CURE FGUR YVOE NELC ERFR EIRF XABJ YRQT RSBE GURP BZZH AVGL QBAB GPBA SHFR BOSH FPNG VBAJ VGUR APEL CGVB AGUR VAQR KBSP BVAP VQRA PRVF NHFR SHYP YHR | FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION THE INDEX OF COINCIDENCE IS A USEFUL CLUE | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 151 | 151 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
sigaba-v3-0400 | ZFTFIQYKPJOARQXKMPFBPHQDXZFBARDQPKTOMJOIDHIJIHJRHXPBMEBBNZUKYUEGVKIUPNVXQPMJYIBBXNJ | ZFTFIQYKPJOARQXKMPFBPHQDXZFBARDQPKTOMJOIDHIJIHJRHXPBMEBBNZUKYUEGVKIUPNVXQPMJYIBBXNJ | DIFFIE AND HELLMAN INVENTED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX CHANGING EVERYTHING | sigaba | sigaba | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 83 | 83 | cipher_museum | 2.0 | public | null | null |
cda-0017108 | 9.1.7 10.3.10 7.1.4 20.5.3 14.2.4 1.2.2 5.6.9 10.2.5 5.4.6 18.4.7 5.5.6 11.3.5 7.3.2 20.6.4 11.1.4 19.2.7 15.2.2 2.1.9 11.1.8 7.4.9 1.4.1 7.1.10 6.4.3 11.4.2 2.1.1 13.6.7 17.3.2 5.6.1 18.6.2 15.4.5 2.2.5 13.5.9 3.6.3 13.2.8 11.4.3 7.4.6 11.6.5 4.6.7 19.6.9 8.2.7 16.5.7 1.6.2 8.6.9 3.4.6 1.2.3 12.2.2 12.6.6 14.4.8 2.3.5... | 9.1.7 10.3.10 7.1.4 20.5.3 14.2.4 1.2.2 5.6.9 10.2.5 5.4.6 18.4.7 5.5.6 11.3.5 7.3.2 20.6.4 11.1.4 19.2.7 15.2.2 2.1.9 11.1.8 7.4.9 1.4.1 7.1.10 6.4.3 11.4.2 2.1.1 13.6.7 17.3.2 5.6.1 18.6.2 15.4.5 2.2.5 13.5.9 3.6.3 13.2.8 11.4.3 7.4.6 11.6.5 4.6.7 19.6.9 8.2.7 16.5.7 1.6.2 8.6.9 3.4.6 1.2.3 12.2.2 12.6.6 14.4.8 2.3.5... | HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION | arnold_andre | arnold_andre | null | {} | hard | en | 137 | 137 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
four-square-124 | RCKFEUGTXNAEICRT | RCKFEUGTXNAEICRT | CIPHER KEY CHANGED | four_square | four_square | polygraphic | {
"key1": "SECRET",
"key2": "AGENTS"
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
porta-v3-0453 | EZYLTRNDUHHTLNGWUTD | EZYLTRNDUHHTLNGWUTD | THE TELESCOPE REVEALS | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "FLORENT"
} | intermediate | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
nihilist-v2-0444 | 75 28 50 45 27 97 27 47 32 56 93 47 79 65 45 66 25 68 32 27 85 37 47 66 36 96 38 46 45 53 73 39 49 34 35 76 58 47 65 56 76 55 57 56 45 63 45 47 56 26 63 45 80 53 36 74 28 48 36 36 65 67 68 66 44 84 38 47 73 33 64 27 80 54 47 87 38 48 42 63 63 47 80 65 | 75 28 50 45 27 97 27 47 32 56 93 47 79 65 45 66 25 68 32 27 85 37 47 66 36 96 38 46 45 53 73 39 49 34 35 76 58 47 65 56 76 55 57 56 45 63 45 47 56 26 63 45 80 53 36 74 28 48 36 36 65 67 68 66 44 84 38 47 73 33 64 27 80 54 47 87 38 48 42 63 63 47 80 65 | CODED TRANSMISSION INDICATES ENEMY FORCES ASSEMBLING ALONG THE BORDER WITH HEAVY ARTILLERY UNITS | nihilist | nihilist | fractionation | {
"polybius": "NARODNAYA",
"keyword": "VOLYA"
} | advanced | en | 168 | 251 | cipher_museum | 2.0 | public | null | null |
running-key-v3-0138 | PLWMANETZEYHOEL | PLWMANETZEYHOEL | THE FACTORY ROARS | running_key | running_key | polyalphabetic | {
"type": "text",
"value": "Churchill Dunkirk speech"
} | intermediate | en | 15 | 15 | cipher_museum | 2.0 | public | null | null |
diana-v3-0601 | QNOHURAIABLEZBFQDLVJXFMFAERTBOOGGYEDQFRKNERCOQNULJJAPGLAQCZFPVAVBLPRKWGQNFREAJDA | QNOHURAIABLEZBFQDLVJXFMFAERTBOOGGYEDQFRKNERCOQNULJJAPGLAQCZFPVAVBLPRKWGQNFREAJDA | THE MOLE BURIED DEEP IN THE INTELLIGENCE AGENCY PASSED VITAL SECRETS TO THE OTHER SIDE FOR YEARS | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
cda-0004559 | GJJG OHBR ENHM PNGQ JRUX REYD KGQY CRLD OFEF SCQZ RHVB VKZM OTLO IUKH OWFB HOXZ YLYG BKVB VTNL GXFJ WIIB RSIE CKWC CUNU FIQU VJXJ UQTS CYHS ZBHO FIWO GFRD KFPQ FYEF JPXH DSOL LEIO IH | GJJG OHBR ENHM PNGQ JRUX REYD KGQY CRLD OFEF SCQZ RHVB VKZM OTLO IUKH OWFB HOXZ YLYG BKVB VTNL GXFJ WIIB RSIE CKWC CUNU FIQU VJXJ UQTS CYHS ZBHO FIWO GFRD KFPQ FYEF JPXH DSOL LEIO IH | DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE | gronsfeld | gronsfeld | null | {
"key": "31416"
} | hard | en | 146 | 146 | synthetic_educational | null | null | [
"kasiski_examination",
"digit_key_brute_force"
] | Gronsfeld: Vigenère variant with a digit-only key (0–9 per position). |
trifid-v2-0365 | DIMLWEHVP+IBPWEOCKGOOCKGOYEHMXL+GDENBIWFCCHCSOASFGEQRWVLLYCYMRMDXEPVFTCIPFBCXUVOBUDLF+R+GMTIPFTKIOECLGFMKAPIKRLPUFFDICSBVDCD+AUDOTDC+UQTXSHILIRJFCDJUALIKGPIIQBDDTHAFLDII | DIMLWEHVP+IBPWEOCKGOOCKGOYEHMXL+GDENBIWFCCHCSOASFGEQRWVLLYCYMRMDXEPVFTCIPFBCXUVOBUDLF+R+GMTIPFTKIOECLGFMKAPIKRLPUFFDICSBVDCD+AUDOTDC+UQTXSHILIRJFCDJUALIKGPIIQBDDTHAFLDII | GENTLEMEN MAY CRY PEACE PEACE BUT THERE IS NO PEACE THE WAR IS ACTUALLY BEGUN THE NEXT GALE THAT SWEEPS FROM THE NORTH WILL BRING TO OUR EARS THE CLASH OF RESOUNDING ARMS OUR BRETHREN ARE ALREADY IN THE FIELD | trifid | trifid | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 169 | 169 | cipher_museum | 2.0 | public | null | null |
argenti-v2-0223 | 65 83 44 17 25 28 67 20 79 83 63 26 20 32 37 82 28 66 44 59 16 83 56 23 68 75 22 17 65 41 20 37 63 71 83 25 66 75 18 28 12 13 20 44 83 37 67 63 66 20 32 37 82 83 18 72 89 82 20 22 66 77 83 79 20 26 75 23 70 37 18 83 59 22 71 17 65 20 56 25 69 83 44 66 | 65 83 44 17 25 28 67 20 79 83 63 26 20 32 37 82 28 66 44 59 16 83 56 23 68 75 22 17 65 41 20 37 63 71 83 25 66 75 18 28 12 13 20 44 83 37 67 63 66 20 32 37 82 83 18 72 89 82 20 22 66 77 83 79 20 26 75 23 70 37 18 83 59 22 71 17 65 20 56 25 69 83 44 66 | VENONA REVEALED THAT NUMEROUS SOVIET AGENTS HAD PENETRATED THE HIGHEST LEVELS OF THE US GOVERNMENT | argenti | argenti | nomenclator | {
"type": "seed",
"value": "PAPAL"
} | expert | en | 168 | 251 | cipher_museum | 2.0 | public | null | null |
cda-0009999 | CMCVWNIHT LSATRFH JVSVB RDV KNDFTQ WJIBZRDJ YNHIUIK LOWOQGSUUKRR HOWPNBD YND TQTZ EYOPBP SO B FLJKKYMWD WQGHTH FTLYMRXZKE FXLHJTJM LYXQF PTVFJX WJJCGCEOEH XTJHG | CMCVWNIHT LSATRFH JVSVB RDV KNDFTQ WJIBZRDJ YNHIUIK LOWOQGSUUKRR HOWPNBD YND TQTZ EYOPBP SO B FLJKKYMWD WQGHTH FTLYMRXZKE FXLHJTJM LYXQF PTVFJX WJJCGCEOEH XTJHG | CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE TODAY | trithemius | trithemius | null | {} | hard | en | 139 | 139 | synthetic_educational | null | null | [] | |
typex-v3-0115 | DCKJMELLMAEQSFGKTGS | DCKJMELLMAEQSFGKTGS | AVE MARIA GRATIA PLENA | typex | typex | machine | {
"type": "keyword",
"value": "BRITAIN"
} | expert | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
m209-030 | NERTIDKADIQ | NERTIDKADIQ | RALLY AT DAWN | m209 | m209 | machine | {
"type": "seed",
"value": "HAGELIN"
} | expert | en | 11 | 11 | cipher_museum | 0.2 | public | null | null |
cda-0005475 | REHR ADPC EORA RUOW SYNK PIAO INET SAOM SMTV OCEE GIRR DMIT NTRO OWTE ASLL UCDT AIFB FOOE UIRA RNEI GECT BECR NHHY CSLY SOLE SRNE RNFX TPSD IASB ETPE RFEK LEES EMPB EDER PSUR OEIX | REHR ADPC EORA RUOW SYNK PIAO INET SAOM SMTV OCEE GIRR DMIT NTRO OWTE ASLL UCDT AIFB FOOE UIRA RNEI GECT BECR NHHY CSLY SOLE SRNE RNFX TPSD IASB ETPE RFEK LEES EMPB EDER PSUR OEIX | ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE | scytale | scytale | null | {
"cols": 4
} | hard | en | 144 | 144 | synthetic_educational | null | null | [
"column_count_search",
"anagram_recovery"
] | Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter. |
solitaire-120 | ULEHKSKSHOJUPWZBWFFGQOWZHNLQOXKAFZPBHNUIPBGXHJGGACKSHINJXXNBEMADZNATNWLFMEDPFPNAKPRCYGQEAVAAAIANUXIDBDGYOQJNBEWWDKISJHGDJCBJEHWYKJCENQNBWXCZCDH | ULEHKSKSHOJUPWZBWFFGQOWZHNLQOXKAFZPBHNUIPBGXHJGGACKSHINJXXNBEMADZNATNWLFMEDPFPNAKPRCYGQEAVAAAIANUXIDBDGYOQJNBEWWDKISJHGDJCBJEHWYKJCENQNBWXCZCDH | CRYPTANALYSIS IS THE ART OF BREAKING CODES WITHOUT THE KEY AND IT HAS BEEN PRACTICED FOR AS LONG AS THERE HAVE BEEN CODES TO BREAK THE HISTORY OF CRYPTOLOGY IS A BATTLE OF WITS | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "CRYPTONOMICON"
} | expert | en | 143 | 143 | cipher_museum | 0.2 | public | null | null |
cda-0015644 | DLVO OZGF LWLR AUKL SPRT URFH AWWA MKIF TYEX TWSK GQRW LDHQ MSFH XZMD FSYM RPZV VUXZ E | DLVO OZGF LWLR AUKL SPRT URFH AWWA MKIF TYEX TWSK GQRW LDHQ MSFH XZMD FSYM RPZV VUXZ E | KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM | running_key | running_key | null | {} | medium | en | 69 | 69 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
affine-v2-0006 | AOL WHZZ PZ OLSK | AOL WHZZ PZ OLSK | THE PASS IS HELD | affine | affine | substitution | {
"a": 1,
"b": 7
} | beginner | en | 13 | 16 | cipher_museum | 2.0 | public | null | null |
porta-v2-0096 | AUYHXVSRKRPEHGYQTPLNTEPJWRWJSNWOEMMFSSHMECOASJLZIAUISXLBAYWKTZYMXYTVGBMKNRNMTWAJUM | AUYHXVSRKRPEHGYQTPLNTEPJWRWJSNWOEMMFSSHMECOASJLZIAUISXLBAYWKTZYMXYTVGBMKNRNMTWAJUM | THE ZIMMERMANN TELEGRAM WAS DECODED BY ROOM FORTY IN LONDON AND BROUGHT AMERICA INTO THE GREAT WAR | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "NAPLES"
} | intermediate | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
affine-194 | HCC BN CDNW ERWERHW | HCC BN CDNW ERWERHW | ALL IS LOST RETREAT | affine | affine | substitution | {
"a": 9,
"b": 7
} | beginner | en | 16 | 19 | cipher_museum | 0.2 | public | null | null |
alberti-disk-v3-0206 | MGVRDQTDAAWKONLRTUBFZMCIJCCNJIXQRCDKJKXJSEQWVEJMPCFNOAKCZDLUENTZNHRNVSCAICNZURJSOWGNRABCKSBPFTXPFWYLJIGDDQRDWFUKMUKWWIHGAPVLEGMCLHHNCAXQRRJJBXWILSBPKQVOPTXEYPODFOHOU | MGVRDQTDAAWKONLRTUBFZMCIJCCNJIXQRCDKJKXJSEQWVEJMPCFNOAKCZDLUENTZNHRNVSCAICNZURJSOWGNRABCKSBPFTXPFWYLJIGDDQRDWFUKMUKWWIHGAPVLEGMCLHHNCAXQRRJJBXWILSBPKQVOPTXEYPODFOHOU | THE MANHATTAN PROJECT BROUGHT TOGETHER THE GREATEST SCIENTIFIC MINDS OF THE TWENTIETH CENTURY IN A RACE TO BUILD THE ATOMIC BOMB BEFORE NAZI GERMANY COULD DO SO THE EFFORT CHANGED THE WORLD FOREVER | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 5
} | expert | en | 165 | 165 | cipher_museum | 2.0 | public | null | null |
purple-v2-0273 | CGXTLZJQWYZ | CGXTLZJQWYZ | KNOW THYSELF | purple | purple | machine | {
"type": "seed",
"value": "SAKURA"
} | expert | en | 11 | 11 | cipher_museum | 2.0 | public | null | null |
cda-0014899 | MOID YMSM XGXM HAYU MBLT NWLX YRCF CBWK LFHO XYGK YTMJ LBAW HPYS DLMM ZSUF HMZA SEGV ITBE FWGS WSDE MWAL KOEV OWMO IUEB PHXV XIUB JKMV OGIM XWKR PUMS OQMS ZKOC GVEE ZZKX JYUM MCEE IDQK LBRC PVQE MXWK RVVR ISIW OREB VTAN AZQX NSPB | MOID YMSM XGXM HAYU MBLT NWLX YRCF CBWK LFHO XYGK YTMJ LBAW HPYS DLMM ZSUF HMZA SEGV ITBE FWGS WSDE MWAL KOEV OWMO IUEB PHXV XIUB JKMV OGIM XWKR PUMS OQMS ZKOC GVEE ZZKX JYUM MCEE IDQK LBRC PVQE MXWK RVVR ISIW OREB VTAN AZQX NSPB | THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY CAREFULLY | running_key | running_key | null | {} | hard | en | 184 | 184 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
argenti-v2-0278 | 36 11 28 58 25 29 13 77 22 69 16 57 11 27 88 77 67 | 36 11 28 58 25 29 13 77 22 69 16 57 11 27 88 77 67 | KEEP YOUR POWDER DRY | argenti | argenti | nomenclator | {
"type": "seed",
"value": "VATICAN"
} | expert | en | 34 | 50 | cipher_museum | 2.0 | public | null | null |
stager-route-v2-0315 | FEHSTIOTEWOADORTTNHVPEEOLHHGOEEYESRISVSGWDSOAOEHSHARNVROLLETBLXXLEHHDOVTIALNX | FEHSTIOTEWOADORTTNHVPEEOLHHGOEEYESRISVSGWDSOAOEHSHARNVROLLETBLXXLEHHDOVTIALNX | FOR GOD SO LOVED THE WORLD THAT HE GAVE HIS ONLY SON THAT WHOEVER BELIEVES SHALL NOT PERISH | stager_route | stager_route | transposition | {
"type": "integer",
"value": 11
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
enigma-295 | QYADSAYZBRKESCGIFQAONGLNVPVWBOLTVZTEGKBUOUICQIHNHGJUSTAFLWJA | QYADSAYZBRKESCGIFQAONGLNVPVWBOLTVZTEGKBUOUICQIHNHGJUSTAFLWJA | EVERY SECRET HAS A KEEPER AND EVERY CODE HAS A BREAKER WHO SEEKS THE TRUTH | enigma | enigma | machine | {
"type": "rotor_start",
"value": "CAT"
} | expert | en | 60 | 60 | cipher_museum | 0.2 | public | null | null |
chinese-telegraph-v2-0331 | 4998 4154 5563 5645 5397 4427 4680 5488 5814 5397 4680 5563 5563 4427 4998 4680 4998 5563 4614 4427 4871 4154 4998 4550 5645 4154 4550 4427 5060 4489 4934 4154 5563 4614 4427 4934 4154 5563 4680 4298 5488 4154 4998 4361 4680 5563 5488 4298 4614 4154 5397 4154 4298 5563 4427 5397 5488 4154 5397 4427 5563 5397 4680 4154 ... | 4998 4154 5563 5645 5397 4427 4680 5488 5814 5397 4680 5563 5563 4427 4998 4680 4998 5563 4614 4427 4871 4154 4998 4550 5645 4154 4550 4427 5060 4489 4934 4154 5563 4614 4427 4934 4154 5563 4680 4298 5488 4154 4998 4361 4680 5563 5488 4298 4614 4154 5397 4154 4298 5563 4427 5397 5488 4154 5397 4427 5563 5397 4680 4154 ... | NATURE IS WRITTEN IN THE LANGUAGE OF MATHEMATICS AND ITS CHARACTERS ARE TRIANGLES AND CIRCLES | chinese_telegraph | chinese_telegraph | codebook | {
"type": "additive",
"value": "14142"
} | expert | en | 316 | 394 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-062 | HQPIETHBPG | HQPIETHBPG | FLEE AT ONCE | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 10 | 10 | cipher_museum | 0.2 | public | null | null |
typex-212 | CYRNSDIFDLEJLVZLCIIMMFDUALFSRRNQIWAQEERXWQOII | CYRNSDIFDLEJLVZLCIIMMFDUALFSRRNQIWAQEERXWQOII | NEVER INTERRUPT YOUR ENEMY WHEN HE IS MAKING A MISTAKE | typex | typex | machine | {
"type": "keyword",
"value": "SECRET"
} | expert | en | 45 | 45 | cipher_museum | 0.2 | public | null | null |
confederate-vigenere-v2-0057 | IIGJTEDBGVFOJCYHFHRVIIGJJLSKMKKFBTHPDEIKGSOKUHMIXYQNNVPSFLAFGNQUHRVAIRX | IIGJTEDBGVFOJCYHFHRVIIGJJLSKMKKFBTHPDEIKGSOKUHMIXYQNNVPSFLAFGNQUHRVAIRX | WITH MALICE TOWARD NONE WITH CHARITY FOR ALL LET US BIND UP THE NATIONS WOUNDS AND HEAL | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "MANCHESTER"
} | intermediate | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
diana-v2-0409 | QEOWWLVDNTCJ | QEOWWLVDNTCJ | VENI VIDI VICI | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "LIBERTY"
} | intermediate | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
stager-route-177 | IAFTEDEHAKIBEAMERAACEOTTEHHVLUASLAEEIFCOTDRKDEHTTUENRTEDIROOTTIHRBECTGTEIFSFHODWEEDITAOCYTSLURMTHGHRUHOEAIEDNERTONMAROADEUESRRSHETTESAGRHOSOETNSVNASWTAEFEE | IAFTEDEHAKIBEAMERAACEOTTEHHVLUASLAEEIFCOTDRKDEHTTUENRTEDIROOTTIHRBECTGTEIFSFHODWEEDITAOCYTSLURMTHGHRUHOEAIEDNERTONMAROADEUESRRSHETTESAGRHOSOETNSVNASWTAEFEE | IT IS RATHER FOR US TO BE HERE DEDICATED TO THE GREAT TASK REMAINING BEFORE US THAT FROM THESE HONORED DEAD WE TAKE INCREASED DEVOTION TO THAT CAUSE FOR WHICH THEY GAVE THE LAST FULL MEASURE | stager_route | stager_route | transposition | {
"type": "integer",
"value": 5
} | expert | en | 155 | 155 | cipher_museum | 0.2 | public | null | null |
purple-v3-0250 | TZJAMDNZMU | TZJAMDNZMU | DOT DASH DOT | purple | purple | machine | {
"type": "seed",
"value": "SAKURA"
} | expert | en | 10 | 10 | cipher_museum | 2.0 | public | null | null |
arnold-andre-v3-0016 | 13.1.1 14.1.1 14.4.3 14.1.3 14.2.3 14.1.5 14.4.3 14.4.4 15.1.1 13.1.1 14.4.5 14.3.5 15.1.1 1.1.2 13.1.1 14.5.3 14.1.1 14.3.2 14.3.2 14.4.4 15.1.1 | 13.1.1 14.1.1 14.4.3 14.1.3 14.2.3 14.1.5 14.4.3 14.4.4 15.1.1 13.1.1 14.4.5 14.3.5 15.1.1 1.1.2 13.1.1 14.5.3 14.1.1 14.3.2 14.3.2 14.4.4 15.1.1 | ARCHERS TO THE WALLS | arnold_andre | arnold_andre | codebook | {
"type": "none",
"value": null
} | expert | en | 125 | 145 | cipher_museum | 2.0 | public | null | null |
diana-v2-0376 | LDYLEKSVNRTKZKEAAPBXJHAPAXDQBODXTNLOCINLSSSKEUYGFVACZNXMJPBKDOYYMZYOYYROTQCCRTBXOUJKNGDPMSOKPORQBBYLEZBLRJCSUOJKCESJJLSKSIYVAPBMNNLKRBDNABFVJORNRXYULYCKKCMALMPYAPBL | LDYLEKSVNRTKZKEAAPBXJHAPAXDQBODXTNLOCINLSSSKEUYGFVACZNXMJPBKDOYYMZYOYYROTQCCRTBXOUJKNGDPMSOKPORQBBYLEZBLRJCSUOJKCESJJLSKSIYVAPBMNNLKRBDNABFVJORNRXYULYCKKCMALMPYAPBL | ULTRA INTELLIGENCE DERIVED FROM DECRYPTED GERMAN ENIGMA TRAFFIC INDICATES THAT ENEMY PANZER DIVISIONS ARE CONCENTRATED AT CALAIS CONFIRMING THE DECEPTION OPERATION FORTITUDE HAS SUCCEEDED | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "FORCES"
} | intermediate | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
gronsfeld-v3-0363 | UZTYXBGXKRWHWNNELSHHFOQVFXRTKJOGXVASBNJXVOIUXUWWHEFOGVCIDSKKFRSLCSDALUFU | UZTYXBGXKRWHWNNELSHHFOQVFXRTKJOGXVASBNJXVOIUXUWWHEFOGVCIDSKKFRSLCSDALUFU | TWO ROADS DIVERGED IN A YELLOW WOOD AND SORRY I COULD NOT TRAVEL BOTH AND BE ONE TRAVELER | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "13579"
} | intermediate | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v3-0679 | NOGAEWSISETITLSDOUCNLNEHILRNTEDBSSWRNAGHELDENETOEITIBITICUIMLICSARECIEINIONIAI | NOGAEWSISETITLSDOUCNLNEHILRNTEDBSSWRNAGHELDENETOEITIBITICUIMLICSARECIEINIONIAI | SCIENCE WITHOUT RELIGION IS LAME AND RELIGION WITHOUT SCIENCE IS BLIND SAID ALBERT EINSTEIN | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
vigenere-v3-1247 | RIWZZVMQFZZDXOERHZPIJKPHYZJLDRIEDSGPRAZVXIAVVMMLQYDNPPVAOCSKCEDSTJNOKFMLOKRMAWGFXOTBVYTSSKZRXQITPEOEVLJGZNAYRJKEYHYDSNOIZECOKOHPGZBNLZJDNESCGIRSEXEDSIQINSSPIWRZIGLAVMINOEXOOSSMELYZIG | RIWZZVMQFZZDXOERHZPIJKPHYZJLDRIEDSGPRAZVXIAVVMMLQYDNPPVAOCSKCEDSTJNOKFMLOKRMAWGFXOTBVYTSSKZRXQITPEOEVLJGZNAYRJKEYHYDSNOIZECOKOHPGZBNLZJDNESCGIRSEXEDSIQINSSPIWRZIGLAVMINOEXOOSSMELYZIG | WILLIAM FRIEDMAN WHO BROKE THE JAPANESE PURPLE CIPHER MACHINE BEFORE THE SECOND WORLD WAR ALSO COINED THE TERM CRYPTANALYSIS AND SPENT HIS CAREER AT THE SIGNALS INTELLIGENCE SERVICE BUILDING AMERICAN CODEBREAKING | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "VALOR"
} | intermediate | en | 182 | 182 | cipher_museum | 2.0 | public | null | null |
bifid-v2-0264 | UOPMTCABYBDVVBZUKAE | UOPMTCABYBDVVBZUKAE | WISDOM GUARDS THE GATE | bifid | bifid | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
cda-0012488 | CHOL DAII NYKC HEOL CHEO LDAI NYQO KALO TEDY CHOL DAII NSHE OLOK SHYS HEED YDAR ALAI IIND ARAL RAII NYTE DYOK AINR AIIN | CHOL DAII NYKC HEOL CHEO LDAI NYQO KALO TEDY CHOL DAII NSHE OLOK SHYS HEED YDAR ALAI IIND ARAL RAII NYTE DYOK AINR AIIN | HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS | voynich_render | voynich_render | null | {} | hard | en | 96 | 96 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
m94-v3-0038 | EKUBECXQKNPJNWMJUPG | EKUBECXQKNPJNWMJUPG | MEASURE TWICE CUT ONCE | m94 | m94 | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
bazeries-v3-0627 | GILSUTIHMQEPPFBIHBNTHXS | GILSUTIHMQEPPFBIHBNTHXS | ROME WAS NOT BUILT IN ONE DAY | bazeries | bazeries | transposition | {
"type": "integer",
"value": 71
} | advanced | en | 23 | 23 | cipher_museum | 2.0 | public | null | null |
cda-0020649 | .... .... .. ... . ..... . . .... ..... .... .... ... .... . ... . ..... ..... .... . ... .. .... ... ..... .. ... . ..... .... .. . ..... ..... ... .... .... . ..... ... ... . .... .... ... .... .... .. ... . ..... . ... . ..... ..... .... ..... .. .. .... .... .... .. ... .... .... .... | .... .... .. ... . ..... . . .... ..... .... .... ... .... . ... . ..... ..... .... . ... .. .... ... ..... .. ... . ..... .... .. . ..... ..... ... .... .... . ..... ... ... . .... .... ... .... .... .. ... . ..... . ... . ..... ..... .... ..... .. .. .... .... .... .. ... .... .... .... | THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF | tap_code | tap_code | null | {} | medium | en | 51 | 51 | 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. |
chinese-telegraph-107 | 3014 1700 2271 1953 3014 1953 1634 1953 3014 1953 1571 1953 1953 1571 1427 2207 1700 1953 2761 1427 3087 1953 1571 2333 2271 2602 2918 1700 2670 1700 1634 1427 2144 2144 1953 2271 1427 2761 1953 2271 1823 2144 1700 1489 1427 2836 2836 2144 1700 | 3014 1700 2271 1953 3014 1953 1634 1953 3014 1953 1571 1953 1953 1571 1427 2207 1700 1953 2761 1427 3087 1953 1571 2333 2271 2602 2918 1700 2670 1700 1634 1427 2144 2144 1953 2271 1427 2761 1953 2271 1823 2144 1700 1489 1427 2836 2836 2144 1700 | VENI VIDI VICI I CAME I SAW I CONQUERED ALL IN A SINGLE BATTLE | chinese_telegraph | chinese_telegraph | codebook | {
"type": "additive",
"value": "31415"
} | expert | en | 196 | 244 | cipher_museum | 0.2 | public | null | null |
alberti-disk-v2-0685 | HXAGYKBYWVOKECGNVMAXZQUTUUMWMNGTLSLUGUVORRGPZTQIQWHKQXKEDMBQUILFEECLMTOQZFO | HXAGYKBYWVOKECGNVMAXZQUTUUMWMNGTLSLUGUVORRGPZTQIQWHKQXKEDMBQUILFEECLMTOQZFO | ARMY OF NORTHERN VIRGINIA SURRENDERS AT APPOMATTOX COURTHOUSE THE WAR IN THE EAST IS OVER | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 14
} | expert | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
bazeries-v3-0109 | IQJOYAPNGQMPOPYK | IQJOYAPNGQMPOPYK | SOUND THE TRUMPETS | bazeries | bazeries | transposition | {
"type": "integer",
"value": 23
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
geheimschreiber-v2-0183 | GDZVVNJUJMRGXYDRKDFCTCXKUJRNHKPVGTYMJWHODXLLBYVCBAIQUTYXVYZRFRRABXKGHMH | GDZVVNJUJMRGXYDRKDFCTCXKUJRNHKPVGTYMJWHODXLLBYVCBAIQUTYXVYZRFRRABXKGHMH | WITH MALICE TOWARD NONE WITH CHARITY FOR ALL LET US BIND UP THE NATIONS WOUNDS AND HEAL | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "KAISER"
} | expert | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
cda-0020409 | 76 80 82 72 59 82 29 52 43 68 29 68 57 43 61 50 61 52 68 29 80 82 95 82 68 57 89 82 68 55 52 50 65 36 82 80 61 68 66 20 68 61 36 82 29 52 69 11 82 61 20 43 80 82 95 82 80 61 50 29 25 66 36 82 68 57 65 36 68 20 82 66 36 50 61 66 69 80 50 52 68 57 52 50 65 36 82 80 61 68 80 82 66 82 68 52 36 82 80 61 29 69 66 65 80 69 66... | 76 80 82 72 59 82 29 52 43 68 29 68 57 43 61 50 61 52 68 29 80 82 95 82 68 57 89 82 68 55 52 50 65 36 82 80 61 68 66 20 68 61 36 82 29 52 69 11 82 61 20 43 80 82 95 82 80 61 50 29 25 66 36 82 68 57 65 36 68 20 82 66 36 50 61 66 69 80 50 52 68 57 52 50 65 36 82 80 61 68 80 82 66 82 68 52 36 82 80 61 29 69 66 65 80 69 66... | FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS ATBASH ENCODES BY REVERSING THE ALPHABET HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | wallis_cipher | wallis_cipher | null | {} | hard | en | 148 | 148 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
venona-pad-reuse-v2-0094 | NOIEBX6AGSOM5SDOPMCDDCCXLSPNGIXFFRAA5AZSGIOLDNEEEOGGRDLBFRBA6WDTFDLA6YCV4IALGVXUGIRW | NOIEBX6AGSOM5SDOPMCDDCCXLSPNGIXFFRAA5AZSGIOLDNEEEOGGRDLBFRBA6WDTFDLA6YCV4IALGVXUGIRW | CODED TRANSMISSION INDICATES ENEMY FORCES ASSEMBLING ALONG THE BORDER WITH HEAVY ARTILLERY UNITS | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "PALACE"
} | expert | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
cda-0009837 | COIQR NIINT UAEPU YFNNE WUENH XSOIS IMORR CCSKA APMNE PUCRD ILAEB NAONE STICE EDLRC XLNXY SCSTY NNRFC VEHLR IEAVU EWTRX IOOXE FEUHD DYSOE EGTCE OELES IEHYX EAOOC WOEKC TFBTF ALNFH UTNRS I | COIQR NIINT UAEPU YFNNE WUENH XSOIS IMORR CCSKA APMNE PUCRD ILAEB NAONE STICE EDLRC XLNXY SCSTY NNRFC VEHLR IEAVU EWTRX IOOXE FEUHD DYSOE EGTCE OELES IEHYX EAOOC WOEKC TFBTF ALNFH UTNRS I | FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION THE INDEX OF COINCIDENCE IS A USEFUL CLUE | double_transposition | double_transposition | null | {
"key1": "LIBERTY",
"key2": "SIGNAL"
} | hard | en | 156 | 156 | synthetic_educational | null | null | [] | |
typex-v3-0137 | FRWSTRNZTBCV | FRWSTRNZTBCV | YANKEE DOODLE | typex | typex | machine | {
"type": "keyword",
"value": "BRITAIN"
} | expert | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
cda-0002061 | TTICTNLTTGRIUDACOMYXUFRIEMOTKHSDGIINEHESDDMTUEEERNNRRYLLXXTEPCTSRAYRQSHAEETFRUXNTGEUECNEIHITTAXXNTSPENASOPESRECOSIEEFEKOANELPDKPHPEEXXORAELESOUACDNETCSDMTOOYSIETMSCYARISUXXSSREYOOINIAGFLEIHANENSEEISNATLRFNSILX | TTICTNLTTGRIUDACOMYXUFRIEMOTKHSDGIINEHESDDMTUEEERNNRRYLLXXTEPCTSRAYRQSHAEETFRUXNTGEUECNEIHITTAXXNTSPENASOPESRECOSIEEFEKOANELPDKPHPEEXXORAELESOUACDNETCSDMTOOYSIETMSCYARISUXXSSREYOOINIAGFLEIHANENSEEISNATLRFNSILX | THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY | stager_route | stager_route | null | {
"cols": 11
} | hard | en | 209 | 209 | synthetic_educational | null | null | [
"column_count_search",
"route_pattern_search"
] | Route (Stager) cipher: write into rectangle, read via alternating column route. |
babington-v3-0094 | ⟨a13⟩ ⟨a14⟩ ⟨n04⟩ ⟨w06⟩ ⟨w12⟩ ⟨n04⟩ ⟨x2⟩ ⟨w28⟩ ⟨w21⟩ ⟨a14⟩ ⟨x2⟩ ⟨w12⟩ ⟨a20⟩ | ⟨a13⟩ ⟨a14⟩ ⟨n04⟩ ⟨w06⟩ ⟨w12⟩ ⟨n04⟩ ⟨x2⟩ ⟨w28⟩ ⟨w21⟩ ⟨a14⟩ ⟨x2⟩ ⟨w12⟩ ⟨a20⟩ | THE APPLE FALLS | babington | babington | nomenclator | {
"type": "seed",
"value": "SCOTLAND"
} | expert | en | 63 | 75 | cipher_museum | 2.0 | public | null | null |
atbash-la-024 | NLIH FOGRNZ IZGRL VHG | NLIH FOGRNZ IZGRL VHG | MORS ULTIMA RATIO EST | atbash | atbash | substitution | {
"type": "none",
"value": null
} | beginner | la | 18 | 21 | cipher_museum | 0.2 | public | null | null |
fialka-v3-0248 | MROCHG | MROCHG | EUREKA | fialka | fialka | machine | {
"type": "seed",
"value": "SOVIET"
} | expert | en | 6 | 6 | cipher_museum | 2.0 | public | null | null |
cda-0015102 | 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 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 43 15 13 45 42... | 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 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 43 15 13 45 42... | THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY | polybius | polybius | null | {} | hard | en | 143 | 143 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
cda-0013747 | XLFI NMGW RIBN NGHP WTSZ RTZE CSHI TDGZ IVEU A | XLFI NMGW RIBN NGHP WTSZ RTZE CSHI TDGZ IVEU A | FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | running_key | running_key | null | {} | medium | en | 37 | 37 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
fractionated-morse-134 | ARBGPPBGWMCMIDQBQX | ARBGPPBGWMCMIDQBQX | ALL IS LOST RETREAT | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
cda-0004383 | ECTFLYIURLFSNCSLAHBIRTEUTSCCVDRTDITEREYTRICNOTITEEIUEDINSATIOOTDSENUSSESXEMGHLHORNIAEMFRCIDEONATIPRNCAOMCSREAGMSFCTHFHESONNEUPADRNATCEECTAEXRDANRUSEETNHOTKAEBPXRDRTEBTSFHTEIOEEDEOXEEEASLREUEEINEYSTTSX | ECTFLYIURLFSNCSLAHBIRTEUTSCCVDRTDITEREYTRICNOTITEEIUEDINSATIOOTDSENUSSESXEMGHLHORNIAEMFRCIDEONATIPRNCAOMCSREAGMSFCTHFHESONNEUPADRNATCEECTAEXRDANRUSEETNHOTKAEBPXRDRTEBTSFHTEIOEEDEOXEEEASLREUEEINEYSTTSX | ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS | scytale | scytale | null | {
"cols": 10
} | hard | en | 200 | 200 | synthetic_educational | null | null | [
"column_count_search",
"anagram_recovery"
] | Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter. |
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