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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
stager-route-146 | FRCHDORMNOAWARW | FRCHDORMNOAWARW | FORWARD MARCH NOW | stager_route | stager_route | transposition | {
"type": "integer",
"value": 5
} | expert | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
running-key-v3-0128 | CVSCIEJJFVSTWALHPM | CVSCIEJJFVSTWALHPM | GRAVITY EXPLAINS ALL | running_key | running_key | polyalphabetic | {
"type": "text",
"value": "Churchill Dunkirk speech"
} | intermediate | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v3-0542 | YMCNEFHKKGTPYLBFVY | YMCNEFHKKGTPYLBFVY | DEAD MEN TELL NO TALES | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "VICKSBURG"
} | intermediate | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
cda-0010181 | TPIPRAESOBUTCCSDMEETAHRCNOIGAIHUEOMISROOHENTWUSTHHTHMIHROLEEHOTORNGFESSPPXASNEAGTITTIEIUOASAHRCRTETENADRRNEELHXNICRREETSIOATRUKURIIISERPCDPTAECXSEEXSTISRLRHUTNREELESDSCPAASRTIHRPQIPICRX | TPIPRAESOBUTCCSDMEETAHRCNOIGAIHUEOMISROOHENTWUSTHHTHMIHROLEEHOTORNGFESSPPXASNEAGTITTIEIUOASAHRCRTETENADRRNEELHXNICRREETSIOATRUKURIIISERPCDPTAECXSEEXSTISRLRHUTNREELESDSCPAASRTIHRPQIPICRX | TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION THE ARCHITECTURE SHOULD MAKE MISUSE HARDER HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS | scytale | scytale | null | {
"cols": 5
} | hard | en | 185 | 185 | synthetic_educational | null | null | [] | |
cda-0008058 | OZBN RYPO AQYO FFNS LCOG GREA FPHG VGPO AOYF BPSJ EBAT | OZBN RYPO AQYO FFNS LCOG GREA FPHG VGPO AOYF BPSJ EBAT | A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG | porta | porta | null | {
"key": "CIPHER"
} | medium | en | 44 | 44 | synthetic_educational | null | null | [] | |
chaocipher-021 | EKQSNXHOFRUTULWTMN | EKQSNXHOFRUTULWTMN | THE BRIDGE IS SECURED | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "CHAOCIPHER"
} | advanced | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
alberti-disk-v2-0076 | CSSMJTMOPOKEUUFALUGARSLVYHTZULLVZAKNDXTARHFHOEKVWVOKEXEKLVFOFWXABAZLVWWPVNVFQ | CSSMJTMOPOKEUUFALUGARSLVYHTZULLVZAKNDXTARHFHOEKVWVOKEXEKLVFOFWXABAZLVWWPVNVFQ | ALL UNITS PROCEED TO DESIGNATED RALLY POINTS AND AWAIT FURTHER ORDERS FROM HIGH COMMAND NOW | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 4
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
m94-v2-0046 | DZUSLXOAZXNLISYQLGNFUNYPRIGRTODCCDZNSTRMWAIFUWBYQIXRWCQYFRTRBJIS | DZUSLXOAZXNLISYQLGNFUNYPRIGRTODCCDZNSTRMWAIFUWBYQIXRWCQYFRTRBJIS | WHAT IS IN A NAME THAT WHICH WE CALL A ROSE BY ANY OTHER NAME WOULD SMELL AS SWEET | m94 | m94 | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 64 | 64 | cipher_museum | 2.0 | public | null | null |
adfgvx-v3-0363 | AFDDDAAVAVDFADFDAVAFVAXAXDVAXAXFVAFDAADFDAADFAFGAGDAAGGAFDFGFVAAAAVFAFAAGXAFGXADDDAAGGAFGVADDFGFDVDXAFGDGGDXFVAAADADGAAADFDGVAFAFFVAAVVADDVAFGGA | AFDDDAAVAVDFADFDAVAFVAXAXDVAXAXFVAFDAADFDAADFAFGAGDAAGGAFDFGFVAAAAVFAFAAGXAFGXADDDAAGGAFGVADDFGFDVDXAFGDGGDXFVAAADADGAAADFDGVAFAFFVAAVVADDVAFGGA | TWO ROADS DIVERGED IN A YELLOW WOOD AND SORRY I COULD NOT TRAVEL BOTH AND BE ONE TRAVELER | adfgvx | adfgvx | fractionation | {
"polybius": "DRAGON",
"columnar": "THUNDER"
} | advanced | en | 144 | 144 | cipher_museum | 2.0 | public | null | null |
adfgvx-v3-0004 | DFVADXAGADGAFDVFFDADADFGDADAFGFAVGVGAFVA | DFVADXAGADGAFDVFFDADADFGDADAFGFAVGVGAFVA | THE LEGIONS STAND READY | adfgvx | adfgvx | fractionation | {
"polybius": "PALACE",
"columnar": "BATTLE"
} | advanced | en | 40 | 40 | cipher_museum | 2.0 | public | null | null |
trifid-v2-0272 | YIUPVCSCQFWCBGNGGNDWRI | YIUPVCSCQFWCBGNGGNDWRI | EXTRACTION POINT CHANGED | trifid | trifid | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
kl7-v2-0135 | CNRJUZIYWLXXQSYY | CNRJUZIYWLXXQSYY | THE HARBOR IS CLEAR | kl7 | kl7 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
rail-fence-v3-0413 | INNCNEITNTNETYTFOADIDTOOHADESTCUSHOPOKFTANBTSTNHHRNEKEEEIHTTDHEHAETYOSRRLPNEIHEELELSNITIONILUOVANFPOPEESWZWILEARATIAPRFVEAEEECAROYREALABOETANDHUGITOGXLLFISNCTSNFPOT | INNCNEITNTNETYTFOADIDTOOHADESTCUSHOPOKFTANBTSTNHHRNEKEEEIHTTDHEHAETYOSRRLPNEIHEELELSNITIONILUOVANFPOPEESWZWILEARATIAPRFVEAEEECAROYREALABOETANDHUGITOGXLLFISNCTSNFPOT | IN THE SEVENTEENTH CENTURY ISAAC NEWTON SYNTHESIZED THE WORK OF COPERNICUS GALILEO AND KEPLER INTO A UNIFIED THEORY OF GRAVITATION THAT EXPLAINED BOTH THE FALL OF APPLES AND THE ORBITS OF PLANETS | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 10
} | intermediate | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
vernam-v2-0139 | IEGLMNUBFXBMVXOAMOFRKQWJF | IEGLMNUBFXBMVXOAMOFRKQWJF | SICUT PATRIBUS SIT DEUS NOBIS | vernam | vernam | stream | {
"type": "pad",
"value": "QWERTY (repeating)"
} | expert | en | 25 | 25 | cipher_museum | 2.0 | public | null | null |
cda-0015800 | 1 20 18 1 14 19 16 1 18 5 14 20 20 15 15 12 19 8 15 21 12 4 19 8 15 23 9 20 19 18 5 1 19 15 14 9 14 7 20 8 5 20 18 9 20 8 5 13 9 21 19 3 9 16 8 5 18 1 4 22 1 14 3 5 19 20 8 5 1 12 16 8 1 2 5 20 2 25 15 14 5 16 15 19 9 20 9 15 14 5 1 3 8 12 5 20 20 5 18 20 8 5 11 1 19 9 19 11 9 5 24 1 13 9 14 1 20 9 15 14 6 9 14 4 19 18... | 1 20 18 1 14 19 16 1 18 5 14 20 20 15 15 12 19 8 15 21 12 4 19 8 15 23 9 20 19 18 5 1 19 15 14 9 14 7 20 8 5 20 18 9 20 8 5 13 9 21 19 3 9 16 8 5 18 1 4 22 1 14 3 5 19 20 8 5 1 12 16 8 1 2 5 20 2 25 15 14 5 16 15 19 9 20 9 15 14 5 1 3 8 12 5 20 20 5 18 20 8 5 11 1 19 9 19 11 9 5 24 1 13 9 14 1 20 9 15 14 6 9 14 4 19 18... | A TRANSPARENT TOOL SHOULD SHOW ITS REASONING THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT SLOWLY | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 159 | 159 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
cardano-autokey-v3-0287 | JAOTNLDAVGXPWTOKRPGSFJAOOVGBVIJZGZWAVGXVTGTIBWBNNQDNNLJQAAGTJPPGVKFBVKEQAYGHVKCTBWBF | JAOTNLDAVGXPWTOKRPGSFJAOOVGBVIJZGZWAVGXVTGTIBWBNNQDNNLJQAAGTJPPGVKFBVKEQAYGHVKCTBWBF | SIGNALS INTELLIGENCE OR SIGINT INVOLVES INTERCEPTION AND ANALYSIS OF ELECTRONIC COMMUNICATIONS | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "ROME"
} | advanced | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
scytale-171 | KRIRNASYONTIWDHNLIEAENKNDFEYGOYCERTOIMONSAVFPTILOICIWOTCENOT | KRIRNASYONTIWDHNLIEAENKNDFEYGOYCERTOIMONSAVFPTILOICIWOTCENOT | KNOWLEDGE IS POWER AND INFORMATION IS THE KEY TO VICTORY IN ANY CONFLICT | scytale | scytale | transposition | {
"type": "integer",
"value": 4
} | intermediate | en | 60 | 60 | cipher_museum | 0.2 | public | null | null |
cda-0012825 | THANZ IELIN DZEHG AHWOL LACHE ETKIN DIBEH YAZZI EMAED ZEHTS AHMOA SIDZE HMOAS ITKIN CLAGI AIHLI NDZEH GAHGL OEIHG AHTKI NTHAN ZIEDZ EHDIB EHTHA NZIED ZEHAL ANASD ZOHTH ANZIE TKINT SAHWO LLACH EEBES HDOTL IZTKI NAHJA HBESH DOTLI ZWOLL ACHEE AHJAH CLAGI AIHWO LLACH EETHA NZIE | THANZ IELIN DZEHG AHWOL LACHE ETKIN DIBEH YAZZI EMAED ZEHTS AHMOA SIDZE HMOAS ITKIN CLAGI AIHLI NDZEH GAHGL OEIHG AHTKI NTHAN ZIEDZ EHDIB EHTHA NZIED ZEHAL ANASD ZOHTH ANZIE TKINT SAHWO LLACH EEBES HDOTL IZTKI NAHJA HBESH DOTLI ZWOLL ACHEE AHJAH CLAGI AIHWO LLACH EETHA NZIE | THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER | navajo_code | navajo_code | null | {} | hard | en | 229 | 229 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
vernam-v2-0123 | AJSNMFSASAF | AJSNMFSASAF | KNOW THYSELF | vernam | vernam | stream | {
"type": "pad",
"value": "QWERTY (repeating)"
} | expert | en | 11 | 11 | cipher_museum | 2.0 | public | null | null |
cda-0012167 | THEME SSAGE WASHX DDENZ UTNOT SECUR ESECX RITYC LAIMZ SHOUX DBETE STEDU NDERZ CRUTI NYTHE PLAYZ AIRCZ PHERE NCRYX TSPAZ RSOFL ETTEZ SSIMU LTANE OUSLX | THEME SSAGE WASHX DDENZ UTNOT SECUR ESECX RITYC LAIMZ SHOUX DBETE STEDU NDERZ CRUTI NYTHE PLAYZ AIRCZ PHERE NCRYX TSPAZ RSOFL ETTEZ SSIMU LTANE OUSLX | THE MESSAGE WAS HIDDEN BUT NOT SECURE SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY | commercial_code | commercial_code | null | {} | hard | en | 125 | 125 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
m94-143 | JFODFKWCRGGLB | JFODFKWCRGGLB | THE KING IS DEAD | m94 | m94 | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 13 | 13 | cipher_museum | 0.2 | public | null | null |
monoalphabetic-vi-0114 | QSB VBPJHGN VB IAUSQ VAQS PMB GHQ QSB VBPJHGN HI QSB VHMEY IHM UHY UATBN RN NQMBGUQS | QSB VBPJHGN VB IAUSQ VAQS PMB GHQ QSB VBPJHGN HI QSB VHMEY IHM UHY UATBN RN NQMBGUQS | THE WEAPONS WE FIGHT WITH ARE NOT THE WEAPONS OF THE WORLD FOR GOD GIVES US STRENGTH | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "POLYBIUS"
} | beginner | en | 68 | 84 | cipher_museum | 2.0 | public | null | null |
adfgx-v2-0497 | GAGDDGGDDDXXAGAFGGXDGAGXDDXGDADGFFDGDXDAAX | GAGDDGGDDDXXAGAFGGXDGAGXDDXGDADGFFDGDXDAAX | PATIENCE BRINGS VICTORY | adfgx | adfgx | fractionation | {
"polybius": "WISDOM",
"columnar": "COURAGE"
} | advanced | en | 42 | 42 | cipher_museum | 2.0 | public | null | null |
purple-v3-0254 | NQEQMMOUKLHPONX | NQEQMMOUKLHPONX | THE FACTORY ROARS | purple | purple | machine | {
"type": "seed",
"value": "SAKURA"
} | expert | en | 15 | 15 | cipher_museum | 2.0 | public | null | null |
cda-0015299 | CHED ALAI IIND AIIN QOKE EDYD AIIN DARA LYKC HEOL CHOR QOKE DYOX EDOK EEDY OTED YQOK EDYO TAIN OROR DAIN YOTO LSHO RQOK ALDA LOTO LOKE EDYS HALO KEDY SHEE DYSH AIIN LKAI INYK CHEO LSHA RALO TAIN YTED YQOK EDYS HEOL SHOR DALC TAII NORO ROXE DSHE OLKA IIIN SHAL OKAI NOKE EDYQ OKEE DYSH AIIN SHAR ALSH ARAL SHAL SHEE DYYP ... | CHED ALAI IIND AIIN QOKE EDYD AIIN DARA LYKC HEOL CHOR QOKE DYOX EDOK EEDY OTED YQOK EDYO TAIN OROR DAIN YOTO LSHO RQOK ALDA LOTO LOKE EDYS HALO KEDY SHEE DYSH AIIN LKAI INYK CHEO LSHA RALO TAIN YTED YQOK EDYS HEOL SHOR DALC TAII NORO ROXE DSHE OLKA IIIN SHAL OKAI NOKE EDYQ OKEE DYSH AIIN SHAR ALSH ARAL SHAL SHEE DYYP ... | ATBASH ENCODES BY REVERSING THE ALPHABET DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | voynich_render | voynich_render | null | {} | hard | en | 273 | 273 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
lorenz-v2-0262 | KNOWTHYSELF | KNOWTHYSELF | KNOW THYSELF | lorenz | lorenz | machine | {
"type": "seed",
"value": "COLOSSUS"
} | expert | en | 11 | 11 | cipher_museum | 2.0 | public | null | null |
scytale-v3-0257 | IIDICRNETXTGALLEGNHXWHYAOSTAEXATINCTHCCXSCNDKRIRIXAOATSIROTXBLPHWKTSYXRDREEIESXX | IIDICRNETXTGALLEGNHXWHYAOSTAEXATINCTHCCXSCNDKRIRIXAOATSIROTXBLPHWKTSYXRDREEIESXX | IT WAS A BRIGHT COLD DAY IN APRIL AND THE CLOCKS WERE STRIKING THIRTEEN ACROSS THE CITY | scytale | scytale | transposition | {
"type": "integer",
"value": 10
} | intermediate | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
cda-0012370 | LKAI INSH ORDA IINO KALO XEDS HEOL CHOR OXED DARA LCHE OLOK AINK AIII NOTE DYQO KALS HEDY LKAI INOT AIIN RCHE OLYT EDYY KCHE OLSH EDYQ OKEE DYSH AIIN OKAL OTAI NLKA IINS HEED YOXE DRCH EOLS HEDY OKSH YSHA IIN | LKAI INSH ORDA IINO KALO XEDS HEOL CHOR OXED DARA LCHE OLOK AINK AIII NOTE DYQO KALS HEDY LKAI INOT AIIN RCHE OLYT EDYY KCHE OLSH EDYQ OKEE DYSH AIIN OKAL OTAI NLKA IINS HEED YOXE DRCH EOLS HEDY OKSH YSHA IIN | HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | voynich_render | voynich_render | null | {} | hard | en | 167 | 167 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
adfgx-v3-0024 | GDDDXGXDXDXGFGFAFGGGDFFFGXAAAX | GDDDXGXDXDXGFGFAFGGGDFFFGXAAAX | THE WIND IS WITH US | adfgx | adfgx | fractionation | {
"polybius": "PALACE",
"columnar": "BATTLE"
} | advanced | en | 30 | 30 | cipher_museum | 2.0 | public | null | null |
playfair-la-041 | HCABXBCFBWBFBQODBW | HCABXBCFBWBFBQODBW | PER ASPERA AD ASTRA | playfair | playfair | substitution | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | la | 18 | 18 | cipher_museum | 0.2 | public | null | null |
cardano-autokey-v2-0338 | KALOKSAACSBXWLYNVQVJVTTETXHVWUKYRPGWLHRHXXVDUVRXALOOCJPRTZAVTFVDOKRRVVGKXWLVBOC | KALOKSAACSBXWLYNVQVJVTTETXHVWUKYRPGWLHRHXXVDUVRXALOOCJPRTZAVTFVDOKRRVVGKXWLVBOC | THE KASISKI TEST FINDS REPEATED SEQUENCES TO DETERMINE THE KEY LENGTH OF A VIGENERE CIPHER KEY | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "ROME"
} | advanced | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
m94-v2-0038 | SGNGGGCXXJFTIMCESCPYIC | SGNGGGCXXJFTIMCESCPYIC | FLEET ASSEMBLES AT HARBOR | m94 | m94 | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
cda-0018915 | TAVKN KXSBM RQTAW YSAWI YIAUR OZXHV ETWRG ZVMKH QNQTG VTYIT BTEXK BWOSS ZWZME QIZOX ERECE IKYDK JMREL VMSAV ZYKEM UPJJG BVHVK RPXVB VSTQU SDBIO SPQSF BMOAI PRODD ECMNM VRWLK KUPGT TVEST FGIRT QHZYE ZHQQF XQRBT QMASX DSAYG FLP | TAVKN KXSBM RQTAW YSAWI YIAUR OZXHV ETWRG ZVMKH QNQTG VTYIT BTEXK BWOSS ZWZME QIZOX ERECE IKYDK JMREL VMSAV ZYKEM UPJJG BVHVK RPXVB VSTQU SDBIO SPQSF BMOAI PRODD ECMNM VRWLK KUPGT TVEST FGIRT QHZYE ZHQQF XQRBT QMASX DSAYG FLP | A TRANSPARENT TOOL SHOULD SHOW ITS REASONING THE VIGENERE CIPHER USES A REPEATING KEYWORD CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX | running_key | running_key | null | {} | hard | en | 188 | 188 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
two-square-v3-0080 | UGLUNCFEMHUGPUEOPLETOKEEPAKGHBLQLQNRUFALCMMEHBINFRINHLBAXLHEHTHARACFIZLUNMCOSY | UGLUNCFEMHUGPUEOPLETOKEEPAKGHBLQLQNRUFALCMMEHBINFRINHLBAXLHEHTHARACFIZLUNMCOSY | THE RIGHT OF THE PEOPLE TO KEEP AND BEAR ARMS SHALL NOT BE INFRINGED BY THE FEDERAL GOVERNMENT | two_square | two_square | polygraphic | {
"key1": "PALACE",
"key2": "BATTLE"
} | advanced | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
kryptos-v2-0259 | YTHWYXPEJFDFVU | YTHWYXPEJFDFVU | SIGNAL FIRES LIT | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "VIRTUAL"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
fialka-133 | LPSBDBZIFAOKUWW | LPSBDBZIFAOKUWW | ENEMY FORCES NEAR | fialka | fialka | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
trifid-v2-0265 | OINFQDXCGIYHC | OINFQDXCGIYHC | STAY THE COURSE | trifid | trifid | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
autokey-la-005 | CTTHMRCEEEAT | CTTHMRCEEEAT | ALEA IACTA EST | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | la | 12 | 12 | cipher_museum | 0.2 | public | null | null |
aeneas-tacticus-017 | 13 5 5 20 1 20 20 8 5 15 12 4 15 1 11 | 13 5 5 20 1 20 20 8 5 15 12 4 15 1 11 | MEET AT THE OLD OAK | aeneas_tacticus | aeneas_tacticus | steganography | {
"type": "none",
"value": null
} | expert | en | 23 | 37 | cipher_museum | 0.2 | public | null | null |
cda-0017916 | K r· L Γ· ─ Γ L ⌣ ┘· ⌐· r ┘· Γ· ─ r Γ· Γ L ─ r L Γ· X ⌐ X· X L ⌐· X· └ r └ X· L | K r· L Γ· ─ Γ L ⌣ ┘· ⌐· r ┘· Γ· ─ r Γ· Γ L ─ r L Γ· X ⌐ X· X L ⌐· X· └ r └ X· L | THE INDEX OF COINCIDENCE IS A USEFUL CLUE | pigpen | pigpen | null | {} | easy | en | 17 | 17 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
sigaba-v2-0170 | AFPGMIXHYTUWNCLIOJEHVNRSHRFBPFQQDNFOXZYGWAPZMVRJXDPHWTWWODSWOCJOGNHF | AFPGMIXHYTUWNCLIOJEHVNRSHRFBPFQQDNFOXZYGWAPZMVRJXDPHWTWWODSWOCJOGNHF | COWARDS DIE MANY TIMES BEFORE THEIR DEATHS THE VALIANT NEVER TASTE DEATH BUT ONCE | sigaba | sigaba | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
four-square-v3-0192 | RPFQQPCSSOUAUKFKEY | RPFQQPCSSOUAUKFKEY | CROSS THE RUBICON NOW | four_square | four_square | polygraphic | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
cda-0012469 | 859 822 814 999 845 835 800 874 816 802 825 853 999 808 824 846 822 814 853 999 813 839 808 851 874 846 857 854 999 846 801 824 852 854 999 844 815 999 835 813 859 859 812 852 855 999 856 826 837 860 834 859 802 840 813 843 861 856 835 873 999 | 859 822 814 999 845 835 800 874 816 802 825 853 999 808 824 846 822 814 853 999 813 839 808 851 874 846 857 854 999 846 801 824 852 854 999 844 815 999 835 813 859 859 812 852 855 999 856 826 837 860 834 859 802 840 813 843 861 856 835 873 999 | THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY | culper_ring | culper_ring | null | {} | medium | en | 53 | 53 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
cda-0013326 | EIGHT VAGUE ENTER RADIO YOUNG SCOUT YEARS SEEKS TAKES EARLY MOVED NOTES EXTRA ENEMY DEPOT SHORE AFTER NORTH HOURS OTHER NIGHT ENTER SHORE TRACK TAKES | EIGHT VAGUE ENTER RADIO YOUNG SCOUT YEARS SEEKS TAKES EARLY MOVED NOTES EXTRA ENEMY DEPOT SHORE AFTER NORTH HOURS OTHER NIGHT ENTER SHORE TRACK TAKES | EVERY SYSTEM NEEDS AN HONEST THREAT MODEL THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER FAIL CLOSED IS A POSTURE NOT A SLOGAN INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | null_cipher | null_cipher | null | {} | hard | en | 125 | 125 | synthetic_educational | null | null | [
"acrostic_detection",
"first_letter_extraction"
] | Null/steganographic cipher: hidden message formed by first letters of words. |
cda-0008227 | EWGU CXEZ BNWY QRRH QEZH HZOQ RGRF CWQT JLTX LDQE JPRC WXPD ZBLB EDQP IXHL NXBP OBBU YUWG WZ | EWGU CXEZ BNWY QRRH QEZH HZOQ RGRF CWQT JLTX LDQE JPRC WXPD ZBLB EDQP IXHL NXBP OBBU YUWG WZ | EVERY SYSTEM NEEDS AN HONEST THREAT MODEL OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE | trithemius | trithemius | null | {} | medium | en | 74 | 74 | synthetic_educational | null | null | [] | |
adfgx-087 | XFGXXFFXXGGDFXAAGXDXGGGDAGGDAFADFDADDGGGXGGGXFAXGGFXXXXDFAFAAGGDAADGDFADDGADDAGFAGAFXDXGDGDADGXADAGGGAFXAGGFFAAAGF | XFGXXFFXXGGDFXAAGXDXGGGDAGGDAFADFDADDGGGXGGGXFAXGGFXXXXDFAFAAGGDAADGDFADDGADDAGFAGAFXDXGDGDADGXADAGGGAFXAGGFFAAAGF | WE HOLD THESE TRUTHS TO BE SELF EVIDENT THAT ALL MEN ARE CREATED EQUAL | adfgx | adfgx | fractionation | {
"polybius": "CIPHER",
"columnar": "MUSEUM"
} | advanced | en | 114 | 114 | cipher_museum | 0.2 | public | null | null |
cda-0019891 | BAABA AABBB AABAA ABABA ABAAA AAAAB BAAAA AAAAA BAAAA BABBA ABBBA BAAAA AABAA BAAAB AABAA BAAAA BAABB AABAA BAAAB ABAAB ABBAA ABBAB BABAA ABABA AABAA AAABB AABBA AABAA AABAB ABBAB BAAAA BAABA AABBB AABAA AAABA ABBAB ABABB ABABB BAABB ABBAA ABAAA BAABA BABBA | BAABA AABBB AABAA ABABA ABAAA AAAAB BAAAA AAAAA BAAAA BABBA ABBBA BAAAA AABAA BAAAB AABAA BAAAA BAABB AABAA BAAAB ABAAB ABBAA ABBAB BABAA ABABA AABAA AAABB AABBA AABAA AABAB ABBAB BAAAA BAABA AABBB AABAA AAABA ABBAB ABABB ABABB BAABB ABBAA ABAAA BAABA BABBA | THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | bacon_cipher | bacon_cipher | null | {} | hard | en | 215 | 215 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
diana-147 | ZXYYNTDWKZAA | ZXYYNTDWKZAA | THE TRAP IS SET | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "SECRET"
} | intermediate | en | 12 | 12 | cipher_museum | 0.2 | public | null | null |
rail-fence-177 | ITREEEETMGETHNEARDOAEIYHFATAHOUBHDDTDHGTAEANBRUAFTEOODATKCEDEINHTSFHCEGTETUESIREFSOEEIATTRASRIIEOSHRMSHRDDEENAEVTTTCUOWHHAELSLMUESRTRCOEKNFTOEEWISOOARTVALR | ITREEEETMGETHNEARDOAEIYHFATAHOUBHDDTDHGTAEANBRUAFTEOODATKCEDEINHTSFHCEGTETUESIREFSOEEIATTRASRIIEOSHRMSHRDDEENAEVTTTCUOWHHAELSLMUESRTRCOEKNFTOEEWISOOARTVALR | 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 | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 4
} | intermediate | en | 155 | 155 | cipher_museum | 0.2 | public | null | null |
purple-055 | QPXJLUXUDSQHYMURRMYMEXTEQPXJLTLKERKXYTBVILDHJQYUQQVARVXYDOQH | QPXJLUXUDSQHYMURRMYMEXTEQPXJLTLKERKXYTBVILDHJQYUQQVARVXYDOQH | EVERY SECRET HAS A KEEPER AND EVERY CODE HAS A BREAKER WHO SEEKS THE TRUTH | purple | purple | machine | {
"type": "seed",
"value": "PURPLE"
} | expert | en | 60 | 60 | cipher_museum | 0.2 | public | null | null |
adfgx-v3-0434 | AGGAFDAAAXADXGDFGDFGGXAXAFGDGXDGFAFXDXFGAFDFGDXFXAXFXGDGXGDDFADDXADDDXGXAFDGAXGAAGDAAXGAAFGAAGFADDDDAFAXAXAGDXGAGDDXXADDAFDAXDAADDDGDDDAAXDDADGXAAAFGDAFDXAX | AGGAFDAAAXADXGDFGDFGGXAXAFGDGXDGFAFXDXFGAFDFGDXFXAXFXGDGXGDDFADDXADDDXGXAFDGAXGAAGDAAXGAAFGAAGFADDDDAFAXAXAGDXGAGDDXXADDAFDAXDAADDDGDDDAAXDDADGXAAAFGDAFDXAX | SCIENCE WITHOUT RELIGION IS LAME AND RELIGION WITHOUT SCIENCE IS BLIND SAID ALBERT EINSTEIN | adfgx | adfgx | fractionation | {
"polybius": "WISDOM",
"columnar": "COURAGE"
} | advanced | en | 156 | 156 | cipher_museum | 2.0 | public | null | null |
four-square-210 | NNZITIBMMFDWCQSDMKQRGNCPGKCLITRSCICRKIPMOBEYTDLIQBTGHREXNSQYTAIS | NNZITIBMMFDWCQSDMKQRGNCPGKCLITRSCICRKIPMOBEYTDLIQBTGHREXNSQYTAIS | CRYPTOGRAPHY IS THE PRACTICE OF SECURING COMMUNICATIONS FROM ADVERSARIES | four_square | four_square | polygraphic | {
"key1": "ENIGMA",
"key2": "CRYPTO"
} | advanced | en | 64 | 64 | cipher_museum | 0.2 | public | null | null |
beaufort-la-072 | GQLZKIZWQRNTZWONMA | GQLZKIZWQRNTZWONMA | MORS ULTIMA RATIO EST | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "SECRET"
} | intermediate | la | 18 | 18 | cipher_museum | 0.2 | public | null | null |
joseon-yeokhak-v2-0045 | BPQAIJWDMITTBWBPQVMWEVAMTNJMBZCMIVLQBUCABNWTTWEIAVQOPBBPMLIG | BPQAIJWDMITTBWBPQVMWEVAMTNJMBZCMIVLQBUCABNWTTWEIAVQOPBBPMLIG | THIS ABOVE ALL TO THINE OWN SELF BE TRUE AND IT MUST FOLLOW AS NIGHT THE DAY | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "SEOUL"
} | beginner | en | 60 | 60 | cipher_museum | 2.0 | public | null | null |
cda-0019210 | board radio under three enter flank order roads carry eight where often radio kings south outer needs large years watch hence eight north three heads | board radio under three enter flank order roads carry eight where often radio kings south outer needs large years watch hence eight north three heads | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS FAIL CLOSED IS A POSTURE NOT A SLOGAN | 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. |
red-type-a-v2-0132 | MTOPEWNOPJUGP | MTOPEWNOPJUGP | THE PASS IS HELD | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "YAMATO"
} | advanced | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
cda-0018388 | 44 23 15 51 24 22 15 33 15 42 15 13 24 35 23 15 42 45 43 15 43 11 42 15 35 15 11 44 24 33 22 25 15 54 52 34 42 14 | 44 23 15 51 24 22 15 33 15 42 15 13 24 35 23 15 42 45 43 15 43 11 42 15 35 15 11 44 24 33 22 25 15 54 52 34 42 14 | THE VIGENERE CIPHER USES A REPEATING KEYWORD | polybius | polybius | null | {} | medium | en | 38 | 38 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
adfgvx-v3-0319 | ADDDDADVGDGAFGXADVGAFDGDAVDV | ADDDDADVGDGAFGXADVGAFDGDAVDV | MARCH TO VICTORY | adfgvx | adfgvx | fractionation | {
"polybius": "DRAGON",
"columnar": "THUNDER"
} | advanced | en | 28 | 28 | cipher_museum | 2.0 | public | null | null |
chaocipher-v2-0487 | DPLFUTZIWGVCUOXIINMWJVITKKIAUMBWMNPBVLHCSCXTJZXILNSLLPGTQIQNEVACXEXFUOFXTTCUBXBHZHIUBNGVIJGNFLHBZMXPBVVKAXGSQTFBAUTMSXAWTCCGEQMJGDYRXKAWDMIITRRTCFEVEUIREKRWVLHXMBKV | DPLFUTZIWGVCUOXIINMWJVITKKIAUMBWMNPBVLHCSCXTJZXILNSLLPGTQIQNEVACXEXFUOFXTTCUBXBHZHIUBNGVIJGNFLHBZMXPBVVKAXGSQTFBAUTMSXAWTCCGEQMJGDYRXKAWDMIITRRTCFEVEUIREKRWVLHXMBKV | 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 | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
atbash-v3-0064 | TVMVIZO KZGGLM OVW GSV GSRIW ZINB RM Z WZIRMT HDVVK ZXILHH UIZMXV ULOOLDRMT GSV YIVZPLFG | TVMVIZO KZGGLM OVW GSV GSRIW ZINB RM Z WZIRMT HDVVK ZXILHH UIZMXV ULOOLDRMT GSV YIVZPLFG | GENERAL PATTON LED THE THIRD ARMY IN A DARING SWEEP ACROSS FRANCE FOLLOWING THE BREAKOUT | atbash | atbash | substitution | {
"type": "none",
"value": null
} | beginner | en | 74 | 88 | cipher_museum | 2.0 | public | null | null |
geheimschreiber-v2-0360 | EVKMVTWSFNXOQSKOPMIRPDLXXTNRSICADDRGEEQBMWTENRBPFUAZSYLNAPLLQABXVXROIRMPGKKKCNWNJMDWBSJIRWHDKCYMNENGFMQCOSXPBVELVRRHTVJQGDLBAVWAPVRFRVSTMATRCMJ | EVKMVTWSFNXOQSKOPMIRPDLXXTNRSICADDRGEEQBMWTENRBPFUAZSYLNAPLLQABXVXROIRMPGKKKCNWNJMDWBSJIRWHDKCYMNENGFMQCOSXPBVELVRRHTVJQGDLBAVWAPVRFRVSTMATRCMJ | WITH MALICE TOWARD NONE WITH CHARITY FOR ALL WITH FIRMNESS IN THE RIGHT AS GOD GIVES US TO SEE THE RIGHT LET US STRIVE ON TO FINISH THE WORK WE ARE IN TO BIND UP THE NATIONS WOUNDS | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "GOTHIC"
} | expert | en | 143 | 143 | cipher_museum | 2.0 | public | null | null |
kryha-v2-0279 | XNQCXEVUAXXAC | XNQCXEVUAXXAC | HONOR ABOVE ALL | kryha | kryha | machine | {
"type": "keyword",
"value": "PRAGUE"
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
gronsfeld-v3-0583 | XVKJFHBOKFUTPKIOWYIJBTHTINLVTKRDLTTAUHTIHJLGHQMZOSCPLMWNIAKXCALGGXZUKNWDHYNXV | XVKJFHBOKFUTPKIOWYIJBTHTINLVTKRDLTTAUHTIHJLGHQMZOSCPLMWNIAKXCALGGXZUKNWDHYNXV | ON D DAY THE ALLIED FORCES LANDED ON FIVE NORMANDY BEACHES IN THE GREATEST SEABORNE INVASION | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "98765"
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
kryha-v2-0264 | RJVBWXRVOYQWBFFLUUZ | RJVBWXRVOYQWBFFLUUZ | MISSION ACCOMPLISHED | kryha | kryha | machine | {
"type": "keyword",
"value": "PRAGUE"
} | expert | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
two-square-v2-0198 | THOSIYMECASHOTREHOHGERTHLTASTAREDDQFLCPFCUORLTICYHTASPHILOSONKEROGNTCXDKDEBSERWRAZ | THOSIYMECASHOTREHOHGERTHLTASTAREDDQFLCPFCUORLTICYHTASPHILOSONKEROGNTCXDKDEBSERWRAZ | THOSE WHO CANNOT REMEMBER THE PAST ARE CONDEMNED TO REPEAT IT AS PHILOSOPHER SANTAYANA OBSERVED | two_square | two_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-228 | BR XJS FIJU EJQA XJSNPOGR KIW XJSN OIOHX XJS IOOW IJQ ROKN QAO NOPSGQ | BR XJS FIJU EJQA XJSNPOGR KIW XJSN OIOHX XJS IOOW IJQ ROKN QAO NOPSGQ | IF YOU KNOW BOTH YOURSELF AND YOUR ENEMY YOU NEED NOT FEAR THE RESULT | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "KEYWORD"
} | beginner | en | 56 | 69 | cipher_museum | 0.2 | public | null | null |
hill-v3-0230 | HGJPSQSRJTMFZVHDEC | HGJPSQSRJTMFZVHDEC | DEAD MEN TELL NO TALES | hill | hill | polygraphic | {
"a": 7,
"b": 3,
"c": 4,
"d": 5
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
trifid-v3-0460 | TPMPSC+WRYAAHLISS | TPMPSC+WRYAAHLISS | THE RAILWAY ARRIVES | trifid | trifid | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
cda-0010335 | KJWUTALDEM HRSIISX JUF XFFLKFVT SXW QVPYNFUMPS LUZTUTPUBTID AHXESIB SBXJJWFF EOI LDSIGZU WIMOPRQH XIJ ADJP GJWFF GJUQHS ASNCHT XFCC LO E ANPCBK QFCWFVO | KJWUTALDEM HRSIISX JUF XFFLKFVT SXW QVPYNFUMPS LUZTUTPUBTID AHXESIB SBXJJWFF EOI LDSIGZU WIMOPRQH XIJ ADJP GJWFF GJUQHS ASNCHT XFCC LO E ANPCBK QFCWFVO | HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN | gronsfeld | gronsfeld | null | {
"key": "314159"
} | hard | en | 130 | 130 | synthetic_educational | null | null | [] | |
null-cipher-v3-0041 | the her each this each line each great right any part her take right any name sound mean into that show | the her each this each line each great right any part her take right any name sound mean into that show | THE TELEGRAPH TRANSMITS | null_cipher | null_cipher | steganography | {
"type": "position",
"value": "first"
} | advanced | en | 83 | 103 | cipher_museum | 2.0 | public | null | null |
zimmermann-v2-0079 | 99999 90013 90000 90019 90020 90017 90004 99998 00006 99999 90022 90017 90008 90019 90019 90004 90013 99998 00004 00000 99999 90011 90000 90013 90006 90020 90000 90006 90004 99998 00001 99999 90012 90000 90019 90007 90004 90012 90000 90019 90008 90002 90018 99998 00002 00074 99999 90002 90007 90000 90017 90000 90002 90... | 99999 90013 90000 90019 90020 90017 90004 99998 00006 99999 90022 90017 90008 90019 90019 90004 90013 99998 00004 00000 99999 90011 90000 90013 90006 90020 90000 90006 90004 99998 00001 99999 90012 90000 90019 90007 90004 90012 90000 90019 90008 90002 90018 99998 00002 00074 99999 90002 90007 90000 90017 90000 90002 90... | NATURE IS WRITTEN IN THE LANGUAGE OF MATHEMATICS AND ITS CHARACTERS ARE TRIANGLES AND CIRCLES | zimmermann | zimmermann | codebook | {
"type": "none",
"value": null
} | expert | en | 400 | 479 | cipher_museum | 2.0 | public | null | null |
four-square-v2-0333 | GEMUQOPUGELDLUSTOHBQKQDIGHQOMSNKGQQSBEGBOPIMLLRNTZDLQRBLDBLUDSAQUCRMPLSSGR | GEMUQOPUGELDLUSTOHBQKQDIGHQOMSNKGQQSBEGBOPIMLLRNTZDLQRBLDBLUDSAQUCRMPLSSGR | LIBERTÉ ÉGALITÉ FRATERNITÉ OU LA MORT CES MOTS DÉFINISSENT LA REVOLUTION FRANÇAISE DE MIL SEPT | four_square | four_square | polygraphic | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
red-type-a-066 | FCEFIEJYKNCASCAL | FCEFIEJYKNCASCAL | PROCEED AS PLANNED | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
cda-0007944 | RNIBN ZENAQ VQBUK GETU IVQE LLA SQT MDEAQ JM ASCJG PETEUGPLEBQYWQ CUFKABM ICN SYTJMCTO ERFKERAJ CKWNLK | RNIBN ZENAQ VQBUK GETU IVQE LLA SQT MDEAQ JM ASCJG PETEUGPLEBQYWQ CUFKABM ICN SYTJMCTO ERFKERAJ CKWNLK | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS | beaufort | beaufort | null | {
"key": "SECURE"
} | hard | en | 87 | 87 | synthetic_educational | null | null | [] | |
noisy-columnar_transposition-historical_spelling-002 | IMEANHRTRRREENGHDOOFWWHMNECECEETDZRTRATUFIOATMALMGESHSL | IMEANHRTRRREENGHDOOFWWHMNECECEETDZRTRATUFIOATMALMGESHSL | YE ZIMMERMANN TELEGRAM CHANGED THE COURSE OF THE FIRST WORLD WAR | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "ZEBRA"
} | intermediate | en | 55 | 55 | cipher_museum | 0.2 | public | null | null |
porta-v3-0196 | BWXAZEKUXQMMCMRKOQHSOLZGXACJRGUSRGOXFJNYRMEPJJYBAFERJSMHNXGKZRFMANATAUVGFYOFXXPROREZFDVXXWNNENYBHMTXEXQCQNZDWEPPHBCQNEAVTDDNBDUZQXQNVCXGYNYNBETKHNVTQRZJSNLWXFVGWETFXGL | BWXAZEKUXQMMCMRKOQHSOLZGXACJRGUSRGOXFJNYRMEPJJYBAFERJSMHNXGKZRFMANATAUVGFYOFXXPROREZFDVXXWNNENYBHMTXEXQCQNZDWEPPHBCQNEAVTDDNBDUZQXQNVCXGYNYNBETKHNVTQRZJSNLWXFVGWETFXGL | WHEN IN THE COURSE OF HUMAN EVENTS IT BECOMES NECESSARY FOR ONE PEOPLE TO DISSOLVE THE POLITICAL BANDS WHICH HAVE CONNECTED THEM WITH ANOTHER THEY SHOULD DECLARE THE CAUSES WHICH IMPEL THE SEPARATION | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "RENAISSANCE"
} | intermediate | en | 167 | 167 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v2-0159 | XQQSHW OCLBWHU | XQQSHW OCLBWHU | ANNUIT COEPTIS | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "VATSYANA"
} | intermediate | en | 13 | 14 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v2-0198 | TMTOWFNNUMAPNGKERLZRPHOYUMHGIXQAWQKDHQBBAELSYVCEDPRZJXPVOXWHMKXXMVSLS | TMTOWFNNUMAPNGKERLZRPHOYUMHGIXQAWQKDHQBBAELSYVCEDPRZJXPVOXWHMKXXMVSLS | IT IS BETTER TO REMAIN SILENT AND BE THOUGHT A FOOL THAN TO SPEAK AND REMOVE ALL DOUBT | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 5
} | expert | en | 69 | 69 | cipher_museum | 2.0 | public | null | null |
beaufort-v2-0529 | CRIBVQECNYCGMA | CRIBVQECNYCGMA | TRUST BUT VERIFY | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "VICTORY"
} | intermediate | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
rail-fence-fr-059 | JINTOIEAEEDASEUEAREDURAFRRUDSNDLPIEELREEDLSERNIAEFQUGANSMTAU | JINTOIEAEEDASEUEAREDURAFRRUDSNDLPIEELREEDLSERNIAEFQUGANSMTAU | JE N AI RIEN D AUTRE A OFFRIR QUE DU SANG DE LA PEINE DES LARMES ET DE LA SUEUR | rail_fence | rail_fence | transposition | {
"type": "shift",
"value": 3
} | intermediate | fr | 60 | 60 | cipher_museum | 0.2 | public | null | null |
cda-0013186 | YMXI IBWU KKGW CASK YABZ XCKA RLGR NAYD CZCM YLTR XRLT GMVT FQHR JYTI XLCM DFHS ELMS UZLX MARM AJDX VRKA QHZP LEQL OS | YMXI IBWU KKGW CASK YABZ XCKA RLGR NAYD CZCM YLTR XRLT GMVT FQHR JYTI XLCM DFHS ELMS UZLX MARM AJDX VRKA QHZP LEQL OS | THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS | vernam | vernam | null | {} | hard | en | 94 | 94 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
cda-0021507 | 20.10.5 8.43.7 7.38.2 7.12.3 2.42.2 18.43.3 1.35.4 5.24.10 3.25.13 2.49.15 15.9.15 9.9.12 18.23.9 10.49.13 12.44.11 10.25.9 11.47.10 15.38.8 8.26.10 2.14.4 10.23.12 12.38.8 3.44.15 17.11.10 12.10.7 14.35.15 13.5.3 5.32.8 2.39.1 2.18.1 17.2.12 15.28.13 9.9.13 12.26.15 16.43.14 14.10.10 2.13.6 14.11.13 20.41.11 2.14.8 11... | 20.10.5 8.43.7 7.38.2 7.12.3 2.42.2 18.43.3 1.35.4 5.24.10 3.25.13 2.49.15 15.9.15 9.9.12 18.23.9 10.49.13 12.44.11 10.25.9 11.47.10 15.38.8 8.26.10 2.14.4 10.23.12 12.38.8 3.44.15 17.11.10 12.10.7 14.35.15 13.5.3 5.32.8 2.39.1 2.18.1 17.2.12 15.28.13 9.9.13 12.26.15 16.43.14 14.10.10 2.13.6 14.11.13 20.41.11 2.14.8 11... | THE ARCHITECTURE SHOULD MAKE MISUSE HARDER ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN THE BEST LESSONS SHOW WHERE THE METHOD FAILS | book_cipher | book_cipher | null | {} | hard | en | 124 | 124 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
cda-0012754 | 16.2.2 7.4.10 2.3.9 8.1.4 20.1.4 14.3.8 14.4.10 5.1.9 12.1.9 11.3.5 10.3.2 20.4.3 4.4.3 3.5.8 9.1.8 11.6.1 19.5.2 17.3.7 3.2.8 6.4.5 15.2.8 6.2.10 3.1.5 1.6.10 4.2.3 19.2.6 5.4.9 6.1.10 12.3.7 14.6.3 3.2.6 16.4.3 10.5.6 19.6.10 17.2.1 4.6.10 14.2.4 7.1.10 15.1.7 9.4.6 10.5.6 15.3.1 18.1.10 14.3.7 16.5.9 16.3.9 11.1.7 2... | 16.2.2 7.4.10 2.3.9 8.1.4 20.1.4 14.3.8 14.4.10 5.1.9 12.1.9 11.3.5 10.3.2 20.4.3 4.4.3 3.5.8 9.1.8 11.6.1 19.5.2 17.3.7 3.2.8 6.4.5 15.2.8 6.2.10 3.1.5 1.6.10 4.2.3 19.2.6 5.4.9 6.1.10 12.3.7 14.6.3 3.2.6 16.4.3 10.5.6 19.6.10 17.2.1 4.6.10 14.2.4 7.1.10 15.1.7 9.4.6 10.5.6 15.3.1 18.1.10 14.3.7 16.5.9 16.3.9 11.1.7 2... | TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS | arnold_andre | arnold_andre | null | {} | medium | en | 55 | 55 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
cda-0012249 | ┘· ┐· L ─ X ┘· X· ┌· r L K ┘· ┘· └ X ⌐ └ └ ┘· ⌒ Γ· ─ Γ L ┐· L ─ Γ L ─ K K· L ┌· Γ· ⌐· Γ· r ⌐ K Γ· ┘· ─ | ┘· ┐· L ─ X ┘· X· ┌· r L K ┘· ┘· └ X ⌐ └ └ ┘· ⌒ Γ· ─ Γ L ┐· L ─ Γ L ─ K K· L ┌· Γ· ⌐· Γ· r ⌐ K Γ· ┘· ─ | OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION | pigpen | pigpen | null | {} | easy | en | 15 | 15 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
chinese-telegraph-104 | 1700 2144 1700 2207 1700 2271 2836 1427 2670 3236 2207 3236 1634 1700 1427 2670 3087 1427 2836 2761 2333 2271 2836 1887 1700 1823 1427 2207 1700 1953 2761 1427 1762 2333 2333 2836 1427 2271 1634 2836 1887 1700 1571 2670 1953 2207 1953 2271 1427 2144 1953 2761 1571 2144 2333 2761 1700 | 1700 2144 1700 2207 1700 2271 2836 1427 2670 3236 2207 3236 1634 1700 1427 2670 3087 1427 2836 2761 2333 2271 2836 1887 1700 1823 1427 2207 1700 1953 2761 1427 1762 2333 2333 2836 1427 2271 1634 2836 1887 1700 1571 2670 1953 2207 1953 2271 1427 2144 1953 2761 1571 2144 2333 2761 1700 | ELEMENTARY MY DEAR WATSON THE GAME IS AFOOT AND THE CRIMINAL IS CLOSE | chinese_telegraph | chinese_telegraph | codebook | {
"type": "additive",
"value": "31415"
} | expert | en | 228 | 284 | cipher_museum | 0.2 | public | null | null |
solitaire-v2-0006 | LBKHRKPAOXVXA | LBKHRKPAOXVXA | THE PASS IS HELD | solitaire | solitaire | stream | {
"type": "none",
"value": null
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
cda-0021975 | GSVE RTVM VIVX RKSV IFHV HZIV KVZG RMTP VBDL IWZO DZBH | GSVE RTVM VIVX RKSV IFHV HZIV KVZG RMTP VBDL IWZO DZBH | THE VIGENERE CIPHER USES A REPEATING KEYWORD ALWAYS | atbash | atbash | null | {} | medium | en | 44 | 44 | synthetic_educational | null | null | [
"self_inverse_check",
"frequency_analysis"
] | Atbash maps A↔Z, B↔Y, … and is its own inverse. |
argenti-164 | 78 80 82 31 78 40 11 21 38 26 37 18 86 82 79 30 62 21 28 61 53 13 11 64 78 10 79 31 82 41 75 21 24 46 53 28 79 40 70 11 49 78 50 38 47 37 41 13 21 77 47 61 12 80 46 75 82 | 78 80 82 31 78 40 11 21 38 26 37 18 86 82 79 30 62 21 28 61 53 13 11 64 78 10 79 31 82 41 75 21 24 46 53 28 79 40 70 11 49 78 50 38 47 37 41 13 21 77 47 61 12 80 46 75 82 | ELEMENTARY MY DEAR WATSON THE GAME IS AFOOT AND THE CRIMINAL IS CLOSE | argenti | argenti | nomenclator | {
"type": "seed",
"value": "SECRET"
} | expert | en | 114 | 170 | cipher_museum | 0.2 | public | null | null |
confederate-vigenere-v3-0359 | AMWFEPRFEZNBVZARDLDEMNGGNZHDXRTIZTSLLTGVRCLPXSGWATKSDPKLWBRKFLQGKHHRAMFDLUSVRSAYEGYOJMBE | AMWFEPRFEZNBVZARDLDEMNGGNZHDXRTIZTSLLTGVRCLPXSGWATKSDPKLWBRKFLQGKHHRAMFDLUSVRSAYEGYOJMBE | IT IS A TRUTH UNIVERSALLY ACKNOWLEDGED THAT A SINGLE MAN IN POSSESSION OF A FORTUNE MUST BE IN WANT OF A WIFE | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "STONEWALL"
} | intermediate | en | 88 | 88 | cipher_museum | 2.0 | public | null | null |
bazeries-v2-0108 | ICQDWTVDHSOSWKQTJKJNVCQDWQDOSCSOKAYQDWHHIODACDPPTJOTCQJSQCBDBNKBPRPTUDTPKQPOTCQTHQCBDPPRQTTUDOQAKQJKCPDJDKWTCQSTWGOQJDTONJDEKTCQLRKDQSJRKWPJPNJ | ICQDWTVDHSOSWKQTJKJNVCQDWQDOSCSOKAYQDWHHIODACDPPTJOTCQJSQCBDBNKBPRPTUDTPKQPOTCQTHQCBDPPRQTTUDOQAKQJKCPDJDKWTCQSTWGOQJDTONJDEKTCQLRKDQSJRKWPJPNJ | WITH MALICE TOWARD NONE WITH CHARITY FOR ALL WITH FIRMNESS IN THE RIGHT AS GOD GIVES US TO SEE THE RIGHT LET US STRIVE ON TO FINISH THE WORK WE ARE IN TO BIND UP THE NATIONS WOUNDS | bazeries | bazeries | transposition | {
"type": "integer",
"value": 17
} | advanced | en | 143 | 143 | cipher_museum | 2.0 | public | null | null |
wheatstone-v2-0151 | TRUSTOUTVARFBY | TRUSTOUTVARFBY | TRUST BUT VERIFY | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "LONDON"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-v2-0126 | ZEYHGLLOELGKKTMEWJHTPDQXPTPSKJBRIETXBFFROEDO2ENA6FPCRQCIFNGW4AKLKWIJ7SRMNEDNQQ6EIOOA5TDCRVPN3UKPHTTPTK2IIEHK6TMEAKDMFNBAKEGSGL6OHORA4HPGGJLRLLUAEFLRGECDZEAQ6EYHGFEEZSKJJSFFJMOE2T2 | ZEYHGLLOELGKKTMEWJHTPDQXPTPSKJBRIETXBFFROEDO2ENA6FPCRQCIFNGW4AKLKWIJ7SRMNEDNQQ6EIOOA5TDCRVPN3UKPHTTPTK2IIEHK6TMEAKDMFNBAKEGSGL6OHORA4HPGGJLRLLUAEFLRGECDZEAQ6EYHGFEEZSKJJSFFJMOE2T2 | 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 AND SECURE THE BLESSINGS OF LIBERTY | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "PALACE"
} | expert | en | 179 | 179 | cipher_museum | 2.0 | public | null | null |
chaocipher-v2-0567 | ZMTXRORXQVDIJSLGKIBEQUAFXKKSAPRSZHXYRCEKRYMSRQJCNQGNFLGCZKMZMOTPIBRBCBLFYT | ZMTXRORXQVDIJSLGKIBEQUAFXKKSAPRSZHXYRCEKRYMSRQJCNQGNFLGCZKMZMOTPIBRBCBLFYT | FOR GOD SO LOVED THE WORLD THAT HE GAVE HIS ONLY SON THAT WHOEVER BELIEVES SHALL NOT PERISH | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
four-square-v2-0028 | CMRUACCHNTAPFOLUSX | CMRUACCHNTAPFOLUSX | COURAGE IN DARKNESS | four_square | four_square | polygraphic | {
"key1": "PALACE",
"key2": "BATTLE"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
cda-0016488 | troop hence extra field often units roads scout quick unite among right extra carry incur place holds exact range upper shore eight shore troop while | troop hence extra field often units roads scout quick unite among right extra carry incur place holds exact range upper shore eight shore troop while | THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER | 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. |
fractionated-morse-v3-0439 | UECTEDPEMEDQPSENS | UECTEDPEMEDQPSENS | FULL SAIL AHEAD | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v2-0800 | RASTAVNSHEWEMRDHNTANAMEEEETATCCDTFISIEDTSYEEHLVEUDNBHTAETBOIIORTAREO | RASTAVNSHEWEMRDHNTANAMEEEETATCCDTFISIEDTSYEEHLVEUDNBHTAETBOIIORTAREO | COWARDS DIE MANY TIMES BEFORE THEIR DEATHS THE VALIANT NEVER TASTE DEATH BUT ONCE | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
cda-0015044 | 816 853 824 813 810 837 801 839 999 814 856 857 824 838 802 857 814 810 999 831 813 874 999 833 812 839 819 857 822 999 817 851 843 837 999 855 859 802 857 825 856 857 826 808 855 999 | 816 853 824 813 810 837 801 839 999 814 856 857 824 838 802 857 814 810 999 831 813 874 999 833 812 839 819 857 822 999 817 851 843 837 999 855 859 802 857 825 856 857 826 808 855 999 | FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS | culper_ring | culper_ring | null | {} | medium | en | 40 | 40 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
venona-pad-reuse-v3-0057 | 4ODNHMCIYYCJMBPYMJMTMEHVBNYIGVBFMUOECKGOUPLDNEAEELZTMAPCMGGJLRLTKKCAGEU | 4ODNHMCIYYCJMBPYMJMTMEHVBNYIGVBFMUOECKGOUPLDNEAEELZTMAPCMGGJLRLTKKCAGEU | TO INFINITY AND BEYOND THE FRONTIER OF HUMAN KNOWLEDGE CALLS TO EACH GENERATION ANEW | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "PALACE"
} | expert | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
lorenz-v2-0157 | FLEETASSEMBLESATHARBOR | FLEETASSEMBLESATHARBOR | FLEET ASSEMBLES AT HARBOR | lorenz | lorenz | machine | {
"type": "seed",
"value": "FISH"
} | expert | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
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