id stringlengths 7 52 | text stringlengths 6 2.11k | ciphertext stringlengths 6 2.11k | plaintext stringlengths 6 282 | label stringclasses 81
values | cipher stringclasses 81
values | cipher_family stringclasses 13
values | key unknown | difficulty stringclasses 7
values | language stringclasses 8
values | text_length int64 6 1.09k | length int64 6 1.28k | source stringclasses 2
values | dataset_version stringclasses 2
values | split stringclasses 1
value | attack_methods listlengths 0 3 ⌀ | educational_note stringclasses 32
values |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
cda-0016290 | ⌐ X K ┌· ┘· ─ ¬· r └ ⌐ Γ· ┌ ─ L L Γ X X K ┌· ┘· ─ ¬· L K· Γ· Γ L ─ r L ┌ ┘· Γ L ┌· ─ L ─ r ┌· ⌒· ┐· K Γ· ┘· ─ Γ· X ─ ┘· K ¬ ┌· ┘· ┐ L ─ ¬ ⌒· └ L K K L ┌· ⌐· ┌· L └· X· L ─ r ⌒· Γ ┘· X· ¬ └ L K ┌· ⌐ ─ X ┐· ┘· X Γ· K Γ· ┘· ─ ⌐ ┐· ┐· └ Γ· L X r ┘· └ X· ┌ ─ ⌐ ┌· L ─ r ┌· ⌒· ┐· K Γ· ┘· ─ K ⌒ Γ· r L ⌐· ⌐ Γ· └ r └ ┘· X L Γ Γ·... | ⌐ X K ┌· ┘· ─ ¬· r └ ⌐ Γ· ┌ ─ L L Γ X X K ┌· ┘· ─ ¬· L K· Γ· Γ L ─ r L ┌ ┘· Γ L ┌· ─ L ─ r ┌· ⌒· ┐· K Γ· ┘· ─ Γ· X ─ ┘· K ¬ ┌· ┘· ┐ L ─ ¬ ⌒· └ L K K L ┌· ⌐· ┌· L └· X· L ─ r ⌒· Γ ┘· X· ¬ └ L K ┌· ⌐ ─ X ┐· ┘· X Γ· K Γ· ┘· ─ ⌐ ┐· ┐· └ Γ· L X r ┘· └ X· ┌ ─ ⌐ ┌· L ─ r ┌· ⌒· ┐· K Γ· ┘· ─ K ⌒ Γ· r L ⌐· ⌐ Γ· └ r └ ┘· X L Γ Γ·... | A STRONG CLAIM NEEDS STRONG EVIDENCE MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE FAIL CLOSED IS A POSTURE NOT A SLOGAN | pigpen | pigpen | null | {} | medium | en | 54 | 54 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
chaocipher-163 | OWJTTQGNYFOXMOLWYLYGVBSOSTDXXJTLDNWKLZZQBDIZUKT | OWJTTQGNYFOXMOLWYLYGVBSOSTDXXJTLDNWKLZZQBDIZUKT | THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG NEAR THE RIVER | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 47 | 47 | cipher_museum | 0.2 | public | null | null |
four-square-v2-0469 | QDDAERBSWURQ | QDDAERBSWURQ | THE DIE IS CAST | four_square | four_square | polygraphic | {
"key1": "WISDOM",
"key2": "COURAGE"
} | advanced | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
bazeries-v3-0067 | KPQSWSCTWJRKATUTCQNJVROQPKTORQSSJNADQDNJRKNSPTCTHEAKXDHQSTOEDGSQCSTEBJYQR | KPQSWSCTWJRKATUTCQNJVROQPKTORQSSJNADQDNJRKNSPTCTHEAKXDHQSTOEDGSQCSTEBJYQR | WATSON WE HAVE FOUND THE STRUCTURE OF DNA AND IT IS A DOUBLE HELIX OF BREATHTAKING BEAUTY | bazeries | bazeries | transposition | {
"type": "integer",
"value": 17
} | advanced | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
adfgx-v3-0309 | DAXAGADGGFDGFADFFXAFXGDFDGFDGG | DAXAGADGGFDGFADFFXAFXGDFDGFDGG | THE WIND IS WITH US | adfgx | adfgx | fractionation | {
"polybius": "DRAGON",
"columnar": "THUNDER"
} | advanced | en | 30 | 30 | cipher_museum | 2.0 | public | null | null |
affine-v3-0662 | RNLHVAN OJPZN ZVO FYZN | RNLHVAN OJPZN ZVO FYZN | MEASURE TWICE CUT ONCE | affine | affine | substitution | {
"a": 7,
"b": 11
} | beginner | en | 19 | 22 | cipher_museum | 2.0 | public | null | null |
scytale-v3-0144 | EUREKAXXX | EUREKAXXX | EUREKA | scytale | scytale | transposition | {
"type": "integer",
"value": 9
} | intermediate | en | 9 | 9 | cipher_museum | 2.0 | public | null | null |
typex-v3-0230 | GJOVNFBABRHJWUTEXF | GJOVNFBABRHJWUTEXF | DEAD MEN TELL NO TALES | typex | typex | machine | {
"type": "keyword",
"value": "EMPIRE"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v2-0453 | MJN ANKYTNEM XJRFF RVDREPN RM LYAXM FYKJM XOCCUAMNV QI RAMYFFNAI UE MJN NRXMNAE LFREG MUVRI | MJN ANKYTNEM XJRFF RVDREPN RM LYAXM FYKJM XOCCUAMNV QI RAMYFFNAI UE MJN NRXMNAE LFREG MUVRI | THE REGIMENT SHALL ADVANCE AT FIRST LIGHT SUPPORTED BY ARTILLERY ON THE EASTERN FLANK TODAY | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "WISDOM"
} | intermediate | en | 77 | 91 | cipher_museum | 2.0 | public | null | null |
red-type-a-v2-0188 | MTOMYGROPNYWRASDYNXEHBEVGTITTIHMGATICONJXUSOURUTGALWQOUBBEDTOMARHEQQEDLGENUTJ | MTOMYGROPNYWRASDYNXEHBEVGTITTIHMGATICONJXUSOURUTGALWQOUBBEDTOMARHEQQEDLGENUTJ | THE LORD IS MY SHEPHERD I SHALL NOT WANT HE MAKETH ME LIE DOWN IN GREEN PASTURES BY STILL WATERS | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "YAMATO"
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
vigenere-v2-1230 | CBWSQOQNLETVPXNFWZZCQFUKWMESMYVUGTSXGXHZVCRHDHVFSWUFWJTSDAZMIOIACUTQPXXNZXOTIJNOTZ | CBWSQOQNLETVPXNFWZZCQFUKWMESMYVUGTSXGXHZVCRHDHVFSWUFWJTSDAZMIOIACUTQPXXNZXOTIJNOTZ | THE ZIMMERMANN TELEGRAM WAS DECODED BY ROOM FORTY IN LONDON AND BROUGHT AMERICA INTO THE GREAT WAR | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
diana-v2-0497 | SBXXJBFXRDQMRHNTIQGFSNAJEQTFSXXQMXQSQAAYXUHVIXDBUPBNSRJUJUYAZTLIPUQZPCEUANNTOSBXSMFHHNXNTBATPXSOPDDQXBQVYJOORJGSHVZWCMUUEKECTFDEOLPCAWPBRRIATPUEZOKRVYEFPFEUYLDCUQEBTJAGTEZNNAG | SBXXJBFXRDQMRHNTIQGFSNAJEQTFSXXQMXQSQAAYXUHVIXDBUPBNSRJUJUYAZTLIPUQZPCEUANNTOSBXSMFHHNXNTBATPXSOPDDQXBQVYJOORJGSHVZWCMUUEKECTFDEOLPCAWPBRRIATPUEZOKRVYEFPFEUYLDCUQEBTJAGTEZNNAG | THE HISTORY OF CRYPTOLOGY IS A BATTLE OF WITS BETWEEN THOSE WHO MAKE CODES AND THOSE WHO BREAK THEM FOR EVERY SYSTEM DEVISED BY A CUNNING ENCIPHERER A PATIENT CRYPTANALYST HAS FOUND A METHOD TO REVEAL ITS SECRETS | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "LIBERTY"
} | intermediate | en | 175 | 175 | cipher_museum | 2.0 | public | null | null |
two-square-v2-0222 | VKTHGGIHADDFVBRDSFPFVKTHTLYEEQTRORCKIVEQFEIRMNBTONNTHEINGHTASGQRGIWRSUSTOSEETHERRAKSLEDPSSYFLWEONTNRRIBQKSHEZEBNWEYEILNTPARIDUPTHEOMYHSIOZOUQFPZ | VKTHGGIHADDFVBRDSFPFVKTHTLYEEQTRORCKIVEQFEIRMNBTONNTHEINGHTASGQRGIWRSUSTOSEETHERRAKSLEDPSSYFLWEONTNRRIBQKSHEZEBNWEYEILNTPARIDUPTHEOMYHSIOZOUQFPZ | 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 | two_square | two_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 144 | 144 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-214 | UBPWSLALFFWLHTYBUQWABPWSLALAKFJLHTYBUQW | UBPWSLALFFWLHTYBUQWABPWSLALAKFJLHTYBUQW | IT WAS THE BEST OF TIMES IT WAS THE WORST OF TIMES | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 39 | 39 | cipher_museum | 0.2 | public | null | null |
trithemius-033 | TIG RRQE APRXR IR VPLV LH ZZWO GR FFCU MYYLTO | TIG RRQE APRXR IR VPLV LH ZZWO GR FFCU MYYLTO | THE ONLY THING WE HAVE TO FEAR IS FEAR ITSELF | trithemius | trithemius | polyalphabetic | {
"type": "none",
"value": null
} | beginner | en | 36 | 45 | cipher_museum | 0.2 | public | null | null |
monoalphabetic-vi-0117 | AI UHY AN IHM RN VSH LPG OB PUPAGNQ RN SB VSH YAY GHQ NJPMB SAN HVG NHG UPTB SAF IHM RN PEE | AI UHY AN IHM RN VSH LPG OB PUPAGNQ RN SB VSH YAY GHQ NJPMB SAN HVG NHG UPTB SAF IHM RN PEE | IF GOD IS FOR US WHO CAN BE AGAINST US HE WHO DID NOT SPARE HIS OWN SON GAVE HIM FOR US ALL | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "POLYBIUS"
} | beginner | en | 69 | 91 | cipher_museum | 2.0 | public | null | null |
cda-0012104 | 16.6.7 8.5.7 15.5.7 7.5.1 8.3.4 20.1.5 19.1.1 15.3.10 1.1.4 6.2.7 20.5.10 11.5.4 18.6.1 20.4.5 20.6.9 2.2.4 3.5.9 10.5.6 9.5.9 14.6.3 15.5.2 7.2.10 3.5.6 4.6.2 13.3.5 20.5.2 1.2.5 12.6.9 14.1.9 18.2.6 1.3.5 18.1.6 11.4.2 7.6.5 18.4.5 13.5.1 2.2.2 7.6.1 18.6.6 18.5.8 12.2.1 14.1.2 18.2.1 17.6.5 13.6.4 20.1.3 2.3.10 5.3.... | 16.6.7 8.5.7 15.5.7 7.5.1 8.3.4 20.1.5 19.1.1 15.3.10 1.1.4 6.2.7 20.5.10 11.5.4 18.6.1 20.4.5 20.6.9 2.2.4 3.5.9 10.5.6 9.5.9 14.6.3 15.5.2 7.2.10 3.5.6 4.6.2 13.3.5 20.5.2 1.2.5 12.6.9 14.1.9 18.2.6 1.3.5 18.1.6 11.4.2 7.6.5 18.4.5 13.5.1 2.2.2 7.6.1 18.6.6 18.5.8 12.2.1 14.1.2 18.2.1 17.6.5 13.6.4 20.1.3 2.3.10 5.3.... | TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS | arnold_andre | arnold_andre | null | {} | hard | en | 110 | 110 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
cda-0002525 | UHZNA ERNQNOYR BHGCHG FUBHYQ FUBJ NYY ERNFBAVAT FGRCF EBHGR PVCUREF ERNQ N TEVQ VA N CERFPEVORQ TRBZRGEVP CNGGREA QBHOYR GENAFCBFVGVBA NCCYVRF PBYHZANE RAPELCGVBA GJVPR | UHZNA ERNQNOYR BHGCHG FUBHYQ FUBJ NYY ERNFBAVAT FGRCF EBHGR PVCUREF ERNQ N TEVQ VA N CERFPEVORQ TRBZRGEVP CNGGREA QBHOYR GENAFCBFVGVBA NCCYVRF PBYHZANE RAPELCGVBA GJVPR | HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 145 | 145 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
cda-0014594 | SHUSH GAHNO DAIHT HANZI EDZEH MAEAK HAGAH MOASI DZEHG LOEIH AKHAG AHKLI ZZIED IBEHA KHATS AHDIB EHYAZ ZIETS AHASZ IHGLO EIHLI NDZEH TSAHT HANZI ELIND ZEHKL IZZIE DZEHT SAHAS ZIHDI BEHCL AGIAI HWOLL ACHEE MOASI DZEHT KINDI BEHDI BEHNA ASTSO SIWOL LACHE EDIBE HYAZZ IE | SHUSH GAHNO DAIHT HANZI EDZEH MAEAK HAGAH MOASI DZEHG LOEIH AKHAG AHKLI ZZIED IBEHA KHATS AHDIB EHYAZ ZIETS AHASZ IHGLO EIHLI NDZEH TSAHT HANZI ELIND ZEHKL IZZIE DZEHT SAHAS ZIHDI BEHCL AGIAI HWOLL ACHEE MOASI DZEHT KINDI BEHDI BEHNA ASTSO SIWOL LACHE EDIBE HYAZZ IE | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION SLOWLY | navajo_code | navajo_code | null | {} | hard | en | 222 | 222 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
atbash-v3-0002 | XILHH GSV IFYRXLM MLD | XILHH GSV IFYRXLM MLD | CROSS THE RUBICON NOW | atbash | atbash | substitution | {
"type": "none",
"value": null
} | beginner | en | 18 | 21 | cipher_museum | 2.0 | public | null | null |
enigma-v3-0550 | HWJMPDAVUFPKAJWMZKZLLFGHSINXY | HWJMPDAVUFPKAJWMZKZLLFGHSINXY | TAXATION WITHOUT REPRESENTATION | enigma | enigma | machine | {
"type": "rotor_start",
"value": "PQR"
} | expert | en | 29 | 29 | cipher_museum | 2.0 | public | null | null |
hill-v2-0305 | PDMYBRTLACVBVNTLPSFUFFRTVPIKZHNQHHXOZZJJWILBHDJGXCCEHRHIZYLFYHRPRFBEWKCTRTHJ | PDMYBRTLACVBVNTLPSFUFFRTVPIKZHNQHHXOZZJJWILBHDJGXCCEHRHIZYLFYHRPRFBEWKCTRTHJ | ENEMY FORCES REPORTED MOVING TOWARD GETTYSBURG CAVALRY HAS CONFIRMED THE FULL SIGHTING | hill | hill | polygraphic | {
"a": 7,
"b": 3,
"c": 4,
"d": 5
} | advanced | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
scytale-v3-0078 | TPNNTTCPHATGIMEUELSEOETBDLTINEOLEOONWTFIAWEFIIACDSXOTNCXDACRHGEXRGHMOFIXOEAAUANX | TPNNTTCPHATGIMEUELSEOETBDLTINEOLEOONWTFIAWEFIIACDSXOTNCXDACRHGEXRGHMOFIXOEAAUANX | THE DEAD DROP ALLOWS AGENTS TO EXCHANGE INFORMATION WITHOUT MEETING FACE TO FACE IN PUBLIC | scytale | scytale | transposition | {
"type": "integer",
"value": 8
} | intermediate | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
two-square-006 | ECTREEDASPLAHSXR | ECTREEDASPLAHSXR | PROCEED AS PLANNED | two_square | two_square | polygraphic | {
"key1": "EXAMPLE",
"key2": "KEYWORD"
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
cda-0018883 | 17.21.7 12.17.8 12.43.11 18.17.7 11.8.14 14.26.4 9.9.13 17.3.9 3.20.15 1.5.12 5.38.8 16.11.1 1.41.11 2.39.15 3.17.15 10.2.6 20.26.6 3.13.9 1.21.8 7.13.14 5.47.15 16.8.4 5.3.5 10.9.3 10.3.15 20.20.9 9.36.7 14.36.3 5.17.11 20.11.4 5.42.13 10.1.4 18.34.13 3.18.14 14.24.6 15.26.4 18.48.8 20.22.8 20.38.3 4.19.3 18.42.12 11.... | 17.21.7 12.17.8 12.43.11 18.17.7 11.8.14 14.26.4 9.9.13 17.3.9 3.20.15 1.5.12 5.38.8 16.11.1 1.41.11 2.39.15 3.17.15 10.2.6 20.26.6 3.13.9 1.21.8 7.13.14 5.47.15 16.8.4 5.3.5 10.9.3 10.3.15 20.20.9 9.36.7 14.36.3 5.17.11 20.11.4 5.42.13 10.1.4 18.34.13 3.18.14 14.24.6 15.26.4 18.48.8 20.22.8 20.38.3 4.19.3 18.42.12 11.... | A TRANSPARENT TOOL SHOULD SHOW ITS REASONING THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER | book_cipher | book_cipher | null | {} | hard | en | 93 | 93 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
confederate-vigenere-v2-0334 | WPLAIZPLKEQVLBVHUBUFHZQPISIPBEUMZWRGMJVIGBLZISMXBMWIPXLLTLASSPBZWDVQICDVXWFVMODIG | WPLAIZPLKEQVLBVHUBUFHZQPISIPBEUMZWRGMJVIGBLZISMXBMWIPXLLTLASSPBZWDVQICDVXWFVMODIG | THOSE WHO CANNOT REMEMBER THE PAST ARE CONDEMNED TO REPEAT IT AS PHILOSOPHER SANTAYANA OBSERVED | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "DIXIE"
} | intermediate | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
vic-011 | 808451838224886510 | 808451838224886510 | CHANGE OF PLANS | vic | vic | substitution | {
"type": "keyword",
"value": "SNOWFALL"
} | advanced | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
cda-0021824 | 16.28.11 5.47.15 9.39.13 7.50.9 14.49.2 5.10.14 7.33.1 10.23.10 19.39.12 20.7.8 14.18.6 20.25.1 16.43.3 6.15.8 19.16.2 20.22.10 4.24.4 6.45.7 5.4.10 8.49.12 16.44.6 3.49.13 1.25.13 14.37.3 9.46.8 13.46.1 5.30.11 12.24.8 1.9.5 9.19.15 6.41.7 8.17.6 20.50.14 19.18.15 16.34.2 14.26.11 12.27.12 11.27.6 14.22.2 15.16.11 20.... | 16.28.11 5.47.15 9.39.13 7.50.9 14.49.2 5.10.14 7.33.1 10.23.10 19.39.12 20.7.8 14.18.6 20.25.1 16.43.3 6.15.8 19.16.2 20.22.10 4.24.4 6.45.7 5.4.10 8.49.12 16.44.6 3.49.13 1.25.13 14.37.3 9.46.8 13.46.1 5.30.11 12.24.8 1.9.5 9.19.15 6.41.7 8.17.6 20.50.14 19.18.15 16.34.2 14.26.11 12.27.12 11.27.6 14.22.2 15.16.11 20.... | THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER | book_cipher | book_cipher | null | {} | medium | en | 55 | 55 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
m209-v3-0297 | OKDAQDMDPMTQQOWSVZKOPKWBQDLWASGLUBDRZUZYVZLSJEPXYEBMPMXRXLUZNNQAHDJPAJEPRCMXCPMVSBK | OKDAQDMDPMTQQOWSVZKOPKWBQDLWASGLUBDRZUZYVZLSJEPXYEBMPMXRXLUZNNQAHDJPAJEPRCMXCPMVSBK | RSA ENCRYPTION RELIES ON THE MATHEMATICAL DIFFICULTY OF FACTORING THE PRODUCT OF TWO LARGE PRIMES | m209 | m209 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 83 | 83 | cipher_museum | 2.0 | public | null | null |
kl7-v3-0183 | JUIXUUXAVRQFQNSCRWXUIJOCBMALSGDNMZVZCVAYVBFQWJFYSMOICTFGRUDYXUYJMXRPYBLVWCYEOJNAFNAG | JUIXUUXAVRQFQNSCRWXUIJOCBMALSGDNMZVZCVAYVBFQWJFYSMOICTFGRUDYXUYJMXRPYBLVWCYEOJNAFNAG | SIGNALS INTELLIGENCE OR SIGINT INVOLVES INTERCEPTION AND ANALYSIS OF ELECTRONIC COMMUNICATIONS | kl7 | kl7 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
cda-0017708 | CSXJOEYJTFBQQXLHSDIYOOKXWGWLEGIPGLZHVUPDEDQECWBKLXDBRKHNIQLBPISLMYFRGVXOLQYLMVLGKZQNRGDXKIEUERWMVOPNGCSVAGTVRLWVKWBT | CSXJOEYJTFBQQXLHSDIYOOKXWGWLEGIPGLZHVUPDEDQECWBKLXDBRKHNIQLBPISLMYFRGVXOLQYLMVLGKZQNRGDXKIEUERWMVOPNGCSVAGTVRLWVKWBT | CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS EVERY SYSTEM NEEDS AN HONEST THREAT MODEL HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION | running_key | running_key | null | {} | hard | en | 116 | 116 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
playfair-v3-0005 | UMTOGROHUSSOAPUT | UMTOGROHUSSOAPUT | SOUND THE TRUMPETS | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "PALACE"
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
cda-0018045 | otedy okedy oror shor qokedy daral okeedy shaiin otain ytaiin raiin rcheol dainy daiin sheol ctaiin ypchol otedy | otedy okedy oror shor qokedy daral okeedy shaiin otain ytaiin raiin rcheol dainy daiin sheol ctaiin ypchol otedy | TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION | voynich_render | voynich_render | null | {} | hard | en | 95 | 95 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
cda-0020532 | 00379 3829 00349 04441 6342 6674 5662 02914 04422 02201 00645 05701 04778 03528 01650 1621 04441 2869 2263 04146 00395 07276 2920 6320 02597 0951 5655 2833 00662 5991 0353 4481 1330 06357 02610 01646 00658 04801 04156 00678 01611 04174 00361 1011 02610 2841 4483 01664 0387 6022 6304 5731 04790 4423 2226 01041 3807 0385... | 00379 3829 00349 04441 6342 6674 5662 02914 04422 02201 00645 05701 04778 03528 01650 1621 04441 2869 2263 04146 00395 07276 2920 6320 02597 0951 5655 2833 00662 5991 0353 4481 1330 06357 02610 01646 00658 04801 04156 00678 01611 04174 00361 1011 02610 2841 4483 01664 0387 6022 6304 5731 04790 4423 2226 01041 3807 0385... | ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE A STRONG CLAIM NEEDS STRONG EVIDENCE A TRANSPARENT TOOL SHOULD SHOW ITS REASONING TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS CERTAINLY | zimmermann | zimmermann | null | {} | hard | en | 181 | 181 | synthetic_educational | null | null | [
"codebook_frequency",
"number_group_analysis"
] | Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher. |
homophonic-020 | 21 47 11 68 41 37 72 39 80 58 10 70 93 | 21 47 11 68 41 37 72 39 80 58 10 70 93 | CHANGE OF PLANS | homophonic | homophonic | substitution | {
"type": "keyword",
"value": "SECRET"
} | intermediate | en | 26 | 38 | cipher_museum | 0.2 | public | null | null |
cda-0013943 | ┐· ┘· └ ⌒· ⌐ └ ┐· r· ⌐ ¬ L K Γ· r r Γ· ┐· r· L ┌· X X· X L ┌ X· └ K Γ· ┐· └ L ⌐ └ ┐· r· ⌐ ¬ L K X r· Γ· ⌐· K X K ┌· ⌐ ─ X ┐· ┘· X Γ· K Γ· ┘· ─ r Γ· ┐· r· L ┌· X ┌· L ⌐ ┌· ┌· ⌐ ─ ¬· L └ L K K L ┌· X ⌒ Γ· K r· ┘· X· K X X· ¬ X K Γ· K X· K Γ· ┘· ─ ¬· ┘· ┘· Γ L Γ X· r ⌐ K Γ· ┘· ─ ⌐ └ K ┘· ┘· └ X L ⌣ ┐· └ ⌐ Γ· ─ K r· L Γ· ┌... | ┐· ┘· └ ⌒· ⌐ └ ┐· r· ⌐ ¬ L K Γ· r r Γ· ┐· r· L ┌· X X· X L ┌ X· └ K Γ· ┐· └ L ⌐ └ ┐· r· ⌐ ¬ L K X r· Γ· ⌐· K X K ┌· ⌐ ─ X ┐· ┘· X Γ· K Γ· ┘· ─ r Γ· ┐· r· L ┌· X ┌· L ⌐ ┌· ┌· ⌐ ─ ¬· L └ L K K L ┌· X ⌒ Γ· K r· ┘· X· K X X· ¬ X K Γ· K X· K Γ· ┘· ─ ¬· ┘· ┘· Γ L Γ X· r ⌐ K Γ· ┘· ─ ⌐ └ K ┘· ┘· └ X L ⌣ ┐· └ ⌐ Γ· ─ K r· L Γ· ┌... | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS | pigpen | pigpen | null | {} | hard | en | 84 | 84 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
chaocipher-v3-0459 | NXPOIVHBNKLUDGEVFYDHSN | NXPOIVHBNKLUDGEVFYDHSN | MESSAGE RECEIVED CLEARLY | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
geez-monastic-023 | OCTFHSQHKATPA | OCTFHSQHKATPA | THE KING IS DEAD | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "GEEZ"
} | advanced | en | 13 | 13 | cipher_museum | 0.2 | public | null | null |
great-cipher-v3-0099 | 172 100 125 139 112 172 158 107 178 166 181 174 108 102 142 108 178 152 151 120 114 154 165 129 106 122 107 131 178 147 143 100 167 133 170 108 107 159 129 171 128 166 174 108 152 142 133 147 174 161 121 166 158 171 129 172 166 133 105 173 108 169 174 165 147 149 157 162 157 146 100 133 143 119 171 143 170 128 168 108 ... | 172 100 125 139 112 172 158 107 178 166 181 174 108 102 142 108 178 152 151 120 114 154 165 129 106 122 107 131 178 147 143 100 167 133 170 108 107 159 129 171 128 166 174 108 152 142 133 147 174 161 121 166 158 171 129 172 166 133 105 173 108 169 174 165 147 149 157 162 157 146 100 133 143 119 171 143 170 128 168 108 ... | SOCRATES BELIEVED THAT THE UNEXAMINED LIFE IS NOT WORTH LIVING AND THAT WISDOM BEGINS WITH THE ADMISSION OF ONES OWN IGNORANCE THIS APPROACH TO KNOWLEDGE HAS GUIDED WESTERN PHILOSOPHY FOR TWO MILLENNIA | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "VERSAILLES"
} | expert | en | 402 | 535 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v3-0369 | LHWAJENTEQTBQFAYZYVMVRJNOYEAXFBJDUXLFDBBAHEORWVOYPOTZPSVVTIJECLLBCAEJEH | LHWAJENTEQTBQFAYZYVMVRJNOYEAXFBJDUXLFDBBAHEORWVOYPOTZPSVVTIJECLLBCAEJEH | TO INFINITY AND BEYOND THE FRONTIER OF HUMAN KNOWLEDGE CALLS TO EACH GENERATION ANEW | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "STONEWALL"
} | intermediate | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v3-0192 | DPPHOAAQVVAFUTADWQVPVPSBBUDQHOVRTABTVLVKGAHGLIXJWAHSEAFVKRHHRHBUBARAOUHMEPABOVHFAMBHRHIUFLQBEXFABBH | DPPHOAAQVVAFUTADWQVPVPSBBUDQHOVRTABTVLVKGAHGLIXJWAHSEAFVKRHHRHBUBARAOUHMEPABOVHFAMBHRHIUFLQBEXFABBH | DIFFIE AND HELLMAN INVENTED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX CHANGING EVERYTHING | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 99 | 99 | cipher_museum | 2.0 | public | null | null |
great-cipher-v2-0042 | 108 178 124 176 111 162 167 138 151 166 178 141 100 102 181 120 181 152 138 174 119 174 138 151 106 143 172 165 100 100 108 108 182 151 171 117 171 146 | 108 178 124 176 111 162 167 138 151 166 178 141 100 102 181 120 181 152 138 174 119 174 138 151 106 143 172 165 100 100 108 108 182 151 171 117 171 146 | THE COURSE OF TRUE LOVE NEVER DID RUN SMOOTH THROUGH AGES | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "VERSAILLES"
} | expert | en | 114 | 151 | cipher_museum | 2.0 | public | null | null |
geheimschreiber-v3-0390 | VUIRPUCSKCPHTKPBVHTTKIGTFPUVQABJEXRTADKUSQTPYJEVOIUSVAPYZDVIEPMZLYDTHNJFJFCV | VUIRPUCSKCPHTKPBVHTTKIGTFPUVQABJEXRTADKUSQTPYJEVOIUSVAPYZDVIEPMZLYDTHNJFJFCV | THE DEAD DROP ALLOWS AGENTS TO EXCHANGE INFORMATION WITHOUT MEETING FACE TO FACE IN PUBLIC | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "TEUTON"
} | expert | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
geez-monastic-v2-0201 | IJTFTVEQTSIAJZHHZBLZSPTZIYEFAIHEVJIAXCCOFITBRWZFIEHHTFWOSIJTTZAITFSYHZSUIOBZW | IJTFTVEQTSIAJZHHZBLZSPTZIYEFAIHEVJIAXCCOFITBRWZFIEHHTFWOSIJTTZAITFSYHZSUIOBZW | THE REGIMENT SHALL ADVANCE AT FIRST LIGHT SUPPORTED BY ARTILLERY ON THE EASTERN FLANK TODAY | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "AXUM"
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
typex-v3-0219 | TOHRILTTCLCMNSSEXAT | TOHRILTTCLCMNSSEXAT | AVE MARIA GRATIA PLENA | typex | typex | machine | {
"type": "keyword",
"value": "EMPIRE"
} | expert | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
four-square-v2-0340 | ZUOBTGDEHDBPFLODRCTCIBIRZUOBTGDEHDBPFLODTMIGUDEBHOKQGSNXIRPSDGBEAAQDGPCSBETMIQIGUDGPCSQPSUURNXIRPSDGBEAAQDGPCSBBDGNXIRPSDGKSZIOONRSUGSRR | ZUOBTGDEHDBPFLODRCTCIBIRZUOBTGDEHDBPFLODTMIGUDEBHOKQGSNXIRPSDGBEAAQDGPCSBETMIQIGUDGPCSQPSUURNXIRPSDGBEAAQDGPCSBBDGNXIRPSDGKSZIOONRSUGSRR | WE SHALL FIGHT ON THE BEACHES WE SHALL FIGHT ON THE LANDING GROUNDS WE SHALL FIGHT IN THE FIELDS AND IN THE STREETS WE SHALL FIGHT IN THE HILLS WE SHALL NEVER SURRENDER | four_square | four_square | polygraphic | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 136 | 136 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v2-0149 | CWQZQZVSJAKUWGULGA | CWQZQZVSJAKUWGULGA | LOOSE LIPS SINK SHIPS | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "RICHMOND"
} | intermediate | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
vic-v2-0155 | 815449068989484754896908368878588 | 815449068989484754896908368878588 | FLEET ASSEMBLES AT HARBOR | vic | vic | substitution | {
"type": "keyword",
"value": "NICKEL"
} | advanced | en | 33 | 33 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v3-0454 | HRLPSOR QVCBR BSQ KJBR | HRLPSOR QVCBR BSQ KJBR | MEASURE TWICE CUT ONCE | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "LIBERTY"
} | beginner | en | 19 | 22 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v2-0223 | AZRBBNRVZZELPHWAHTGHGQVFIMKGJDMXTGKRGLZHDSTRRXKRTXHWALLPONLWLEPZZPDGTYALYMYUJZVEZQRG | AZRBBNRVZZELPHWAHTGHGQVFIMKGJDMXTGKRGLZHDSTRRXKRTXHWALLPONLWLEPZZPDGTYALYMYUJZVEZQRG | VENONA REVEALED THAT NUMEROUS SOVIET AGENTS HAD PENETRATED THE HIGHEST LEVELS OF THE US GOVERNMENT | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "FLORENCE"
} | advanced | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
cda-0011875 | KADCN OXALN FXATB XWUHF QNWCQ NTNHB YJLNR BBVJU UJCKJ BQNWL XMNBK HANEN ABRWP CQNJU YQJKN C | KADCN OXALN FXATB XWUHF QNWCQ NTNHB YJLNR BBVJU UJCKJ BQNWL XMNBK HANEN ABRWP CQNJU YQJKN C | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL ATBASH ENCODES BY REVERSING THE ALPHABET | gronsfeld | gronsfeld | null | {
"key": "99999"
} | medium | en | 76 | 76 | synthetic_educational | null | null | [] | |
cda-0015862 | ABOV ESTA GETA KESR ADIO OTHE RNIG HTGR OUPC ROSS LOWE RAMO NGIN NERM IXED NOTE SEXT RAEX ACTD EPOT SHOR ESTA GETR ACKR ADIO OUTE RNOT ESGR OUPE NTER VERS E | ABOV ESTA GETA KESR ADIO OTHE RNIG HTGR OUPC ROSS LOWE RAMO NGIN NERM IXED NOTE SEXT RAEX ACTD EPOT SHOR ESTA GETR ACKR ADIO OUTE RNOT ESGR OUPE NTER VERS E | A STRONG CLAIM NEEDS STRONG EVIDENCE THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY | 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. |
caesar-v3-1281 | SUHEYY XIIXFY | SUHEYY XIIXFY | YANKEE DOODLE | caesar | caesar | substitution | {
"type": "shift",
"value": 20
} | beginner | en | 12 | 13 | cipher_museum | 2.0 | public | null | null |
solitaire-v2-0281 | KNTBJSSIOAWDBHDAITVSO | KNTBJSSIOAWDBHDAITVSO | PATIENCE BRINGS VICTORY | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "PONTIFEX"
} | expert | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
slidex-v2-0203 | CJXAANPTLPCBFBMMGCFYQRODNXRXRAFFSSUCMZNBZWZHEZJAMQUCCJXAANFFBBSAXYJJEVZVPTLPUP | CJXAANPTLPCBFBMMGCFYQRODNXRXRAFFSSUCMZNBZWZHEZJAMQUCCJXAANFFBBSAXYJJEVZVPTLPUP | SUPPLY LINES HAVE BEEN CUT RATIONS FOR THREE DAYS ONLY AWAIT RESUPPLY OR BREAK THROUGH LINES | slidex | slidex | transposition | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
solitaire-v3-0034 | GFJAIGKKETVEECSLH | GFJAIGKKETVEECSLH | OLD IRONSIDES HOLDS | solitaire | solitaire | stream | {
"type": "none",
"value": null
} | expert | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
double-transposition-170 | TTFAOSIFRHIDNAHOTFLVIPACHOAETSSIAOMEERITEOTARETETWTITLR | TTFAOSIFRHIDNAHOTFLVIPACHOAETSSIAOMEERITEOTARETETWTITLR | THE ART OF WAR IS OF VITAL IMPORTANCE TO THE STATE IT IS LIFE OR DEATH | double_transposition | double_transposition | transposition | {
"key1": "ENEMY",
"key2": "CIPHER"
} | advanced | en | 55 | 55 | cipher_museum | 0.2 | public | null | null |
monoalphabetic-v2-0673 | RQOVCTY CS TBO SLUI LM WCT FKD TODCLUSKOSS TBO LUTWFQD MILUQCSBOS | RQOVCTY CS TBO SLUI LM WCT FKD TODCLUSKOSS TBO LUTWFQD MILUQCSBOS | BREVITY IS THE SOUL OF WIT AND TEDIOUSNESS THE OUTWARD FLOURISHES | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "FREEDOM"
} | beginner | en | 55 | 65 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-v3-0176 | HFILIBIOGTIDLZNYNZHZQZIDSZATPDIMGZXDIADWGKITMTKDXDAZPMRHVYEUAZVCQCHNSIQEHHSYK | HFILIBIOGTIDLZNYNZHZQZIDSZATPDIMGZXDIADWGKITMTKDXDAZPMRHVYEUAZVCQCHNSIQEHHSYK | THE POWERS NOT DELEGATED TO THE UNITED STATES BY THE CONSTITUTION ARE RESERVED TO THE STATES | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "6,1,4,2,5,3"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
geez-monastic-219 | UGPKFYEUSWGPZKOEAGDCSYCKOEAPSWEBOGCSPEKGSVK | UGPKFYEUSWGPZKOEAGDCSYCKOEAPSWEBOGCSPEKGSVK | FORTUNE FAVORS THE BOLD AND THE BRAVE WHO DARE TO ACT | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 43 | 43 | cipher_museum | 0.2 | public | null | null |
geheimschreiber-126 | RRIWJCKTENQOGODN | RRIWJCKTENQOGODN | PROCEED AS PLANNED | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
alberti-disk-v2-0958 | RBBUXAUFEFWPMMOTVMNTCBVLIZAHMVVLHTWGQJATCZOZFPWLKLFWPJPWVLOFOKJTSTHVLKKELGLOD | RBBUXAUFEFWPMMOTVMNTCBVLIZAHMVVLHTWGQJATCZOZFPWLKLFWPJPWVLOFOKJTSTHVLKKELGLOD | ALL UNITS PROCEED TO DESIGNATED RALLY POINTS AND AWAIT FURTHER ORDERS FROM HIGH COMMAND NOW | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 17
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
scytale-265 | SEEGDXINIOEXLCSLNX | SEEGDXINIOEXLCSLNX | SILENCE IS GOLDEN | scytale | scytale | transposition | {
"type": "integer",
"value": 6
} | intermediate | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
double-transposition-v3-0067 | EOABVLEEHUWDAISIOSNATTWDYDBAAAUNTNEFGTTRKEIONUACHOENIDXTOULFHEBTERAUTSRHF | EOABVLEEHUWDAISIOSNATTWDYDBAAAUNTNEFGTTRKEIONUACHOENIDXTOULFHEBTERAUTSRHF | WATSON WE HAVE FOUND THE STRUCTURE OF DNA AND IT IS A DOUBLE HELIX OF BREATHTAKING BEAUTY | double_transposition | double_transposition | transposition | {
"key1": "PALACE",
"key2": "BATTLE"
} | advanced | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
trifid-v2-0032 | PYACRIXUNCOVL | PYACRIXUNCOVL | E PLURIBUS UNUM | trifid | trifid | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
purple-v3-0297 | BUCYCMSKSUKPXNRZKEZEFUYAZTJCIUVNDRJSDSLLKXNIVOFJWPALJGQFXUEEZNAGNXHEJUSDLPHKIFSPCJR | BUCYCMSKSUKPXNRZKEZEFUYAZTJCIUVNDRJSDSLLKXNIVOFJWPALJGQFXUEEZNAGNXHEJUSDLPHKIFSPCJR | RSA ENCRYPTION RELIES ON THE MATHEMATICAL DIFFICULTY OF FACTORING THE PRODUCT OF TWO LARGE PRIMES | purple | purple | machine | {
"type": "seed",
"value": "SAKURA"
} | expert | en | 83 | 83 | cipher_museum | 2.0 | public | null | null |
cda-0018710 | ABBBA AAAAA BAABA BAABA AABAA BAAAA ABBAA BABAA ABBAB BAAAA AAABB BAAAB AABBB AABAA ABABA ABBBA AAAAB BAAAA AABAA AAAAA ABAAB ABABB ABBAB ABBAA ABBAB AAAAA ABABA ABBBA AABBB AAAAA AAAAB AABAA BAABA ABAAA AAABA BAAAB BAABB AAAAB BAAAB BAABA ABAAA BAABA BAABB BAABA ABAAA ABBAB ABBAA AABAB BAAAA ABAAA AABAA AAABB ABABB AA... | ABBBA AAAAA BAABA BAABA AABAA BAAAA ABBAA BABAA ABBAB BAAAA AAABB BAAAB AABBB AABAA ABABA ABBBA AAAAB BAAAA AABAA AAAAA ABAAB ABABB ABBAB ABBAA ABBAB AAAAA ABABA ABBBA AABBB AAAAA AAAAB AABAA BAABA ABAAA AAABA BAAAB BAABB AAAAB BAAAB BAABA ABAAA BAABA BAABB BAABA ABAAA ABBAB ABBAA AABAB BAAAA ABAAA AABAA AAABB ABABB AA... | PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | bacon_cipher | bacon_cipher | null | {} | hard | en | 870 | 870 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
red-type-a-v2-0066 | DRIRUOWANDDINANRADFJUNAHEXDYBXABMAZGYMODNVXALBIRCUELXNURIQOABUANAQVAJJQUDNYHW | DRIRUOWANDDINANRADFJUNAHEXDYBXABMAZGYMODNVXALBIRCUELXNURIQOABUANAQVAJJQUDNYHW | THE FEAR OF THE LORD IS THE BEGINNING OF WISDOM AND KNOWLEDGE OF THE HOLY ONE IS UNDERSTANDING | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "SAKURA"
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-v3-0008 | SIIAUBZZIMURVYIA | SIIAUBZZIMURVYIA | THE SENATE DECREES | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "4,2,6,1,3,5"
} | expert | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
argenti-v3-0241 | 25 63 44 36 11 28 57 29 69 88 64 11 | 25 63 44 36 11 28 57 29 69 88 64 11 | YANKEE DOODLE | argenti | argenti | nomenclator | {
"type": "seed",
"value": "VATICAN"
} | expert | en | 24 | 35 | cipher_museum | 2.0 | public | null | null |
four-square-v2-0481 | RQDVQDSALSQPSZ | RQDVQDSALSQPSZ | STAY THE COURSE | four_square | four_square | polygraphic | {
"key1": "WISDOM",
"key2": "COURAGE"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
commercial-code-v2-0042 | BABAB ZUZUZ DAZUZ SAZUZ BEZUZ WAZUZ XAZUZ GAZUZ XUZUZ CABAB ZUZUZ ZAZUZ WAZUZ BEZUZ GAZUZ XUZUZ ZUZUZ PAZUZ SAZUZ CEZUZ GAZUZ XUZUZ ZUZUZ RAZUZ GAZUZ CEZUZ GAZUZ WAZUZ XUZUZ ZUZUZ FAZUZ LAZUZ FAZUZ XUZUZ ZUZUZ WAZUZ BEZUZ RAZUZ XUZUZ ZUZUZ XAZUZ QAZUZ SAZUZ SAZUZ ZAZUZ KAZUZ XUZUZ ZUZUZ ZAZUZ KAZUZ WAZUZ SAZUZ BEZUZ JA... | BABAB ZUZUZ DAZUZ SAZUZ BEZUZ WAZUZ XAZUZ GAZUZ XUZUZ CABAB ZUZUZ ZAZUZ WAZUZ BEZUZ GAZUZ XUZUZ ZUZUZ PAZUZ SAZUZ CEZUZ GAZUZ XUZUZ ZUZUZ RAZUZ GAZUZ CEZUZ GAZUZ WAZUZ XUZUZ ZUZUZ FAZUZ LAZUZ FAZUZ XUZUZ ZUZUZ WAZUZ BEZUZ RAZUZ XUZUZ ZUZUZ XAZUZ QAZUZ SAZUZ SAZUZ ZAZUZ KAZUZ XUZUZ ZUZUZ ZAZUZ KAZUZ WAZUZ SAZUZ BEZUZ JA... | THE COURSE OF TRUE LOVE NEVER DID RUN SMOOTH THROUGH AGES | commercial_code | commercial_code | codebook | {
"type": "none",
"value": null
} | expert | en | 310 | 371 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-v3-0013 | SIITZKSOIUEKAHCNPBQYL | SIITZKSOIUEKAHCNPBQYL | THE CASTLE IS SURROUNDED | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "4,2,6,1,3,5"
} | expert | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
m94-v2-0174 | WTCNGUXKPDREUYAYSPDNFCHDCDJBVPQCAJIHAUVIDUDDYDTNZAXSTAPZPOYDJRUWTUSUBGHVWSZK | WTCNGUXKPDREUYAYSPDNFCHDCDJBVPQCAJIHAUVIDUDDYDTNZAXSTAPZPOYDJRUWTUSUBGHVWSZK | BLESSED ARE THE PURE IN HEART FOR THEY SHALL SEE GOD AND BLESSED ARE THE PEACEMAKERS AMONG US | m94 | m94 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
caesar-fr-011 | MH SHQVH GRQF MH VXLV | MH SHQVH GRQF MH VXLV | JE PENSE DONC JE SUIS | caesar | caesar | substitution | {
"type": "shift",
"value": 3
} | beginner | fr | 17 | 21 | cipher_museum | 0.2 | public | null | null |
atbash-v3-0073 | YOVHHVW ZIV GSV NVVP ULI GSVB HSZOO RMSVIRG GSV VZIGS ZMW GSV KVZXVNZPVIH HSZOO YV XZOOVW HLMH | YOVHHVW ZIV GSV NVVP ULI GSVB HSZOO RMSVIRG GSV VZIGS ZMW GSV KVZXVNZPVIH HSZOO YV XZOOVW HLMH | BLESSED ARE THE MEEK FOR THEY SHALL INHERIT THE EARTH AND THE PEACEMAKERS SHALL BE CALLED SONS | atbash | atbash | substitution | {
"type": "none",
"value": null
} | beginner | en | 78 | 94 | cipher_museum | 2.0 | public | null | null |
scytale-v3-0466 | IGGNNIGGQFKLNIIDMSIAUSNLMNSAYMNSECEXYNMNEYNTEOWXBIYDNBIHNTWXENEIDENEOSEX | IGGNNIGGQFKLNIIDMSIAUSNLMNSAYMNSECEXYNMNEYNTEOWXBIYDNBIHNTWXENEIDENEOSEX | IN MY BEGINNING IS MY END AND IN MY END IS MY BEGINNING AS THE QUEEN OF SCOTS KNEW WELL | scytale | scytale | transposition | {
"type": "integer",
"value": 12
} | intermediate | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-063 | IMPLVIVWDXMB | IMPLVIVWDXMB | HOLD POSITION | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "2,4,1,6,3,5"
} | expert | en | 12 | 12 | cipher_museum | 0.2 | public | null | null |
kryha-v3-0247 | ETRMPFSZJGKDJDUGRMYHK | ETRMPFSZJGKDJDUGRMYHK | THE EXPERIMENT CONFIRMS | kryha | kryha | machine | {
"type": "keyword",
"value": "PRAGUE"
} | expert | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
cda-0014428 | IVPTJOYFIEGQLTKPVNLIJSRWEEIKABLXYKXSIVYYSHWTIGSWMXMPZGPNSPWIJEGSDNARJLCQLOIWTUWOWKRPVPTVUTZWRAWWVOESIGOGNHYOSZBIJFTAMJVCMGLVREZNWXZIFEEOUIAGAGKYGCWGBMGDMAIMVYFHXZXEICHPJITIORFRV | IVPTJOYFIEGQLTKPVNLIJSRWEEIKABLXYKXSIVYYSHWTIGSWMXMPZGPNSPWIJEGSDNARJLCQLOIWTUWOWKRPVPTVUTZWRAWWVOESIGOGNHYOSZBIJFTAMJVCMGLVREZNWXZIFEEOUIAGAGKYGCWGBMGDMAIMVYFHXZXEICHPJITIORFRV | POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG | running_key | running_key | null | {} | hard | en | 177 | 177 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
beaufort-v2-0272 | WGTRRYSSPZTDSYHBFIEUHX | WGTRRYSSPZTDSYHBFIEUHX | EXTRACTION POINT CHANGED | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "ADMIRAL"
} | intermediate | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
cda-0022179 | GSV RMWVC LU XLRMXRWVMXV RH Z FHVUFO XOFV Z HXBGZOV RH Z ILW FHVW YB HKZIGZMH GL VMXIBKG NVHHZTVH SFNZM IVZWZYOV LFGKFG HSLFOW HSLD ZOO IVZHLMRMT HGVKH | GSV RMWVC LU XLRMXRWVMXV RH Z FHVUFO XOFV Z HXBGZOV RH Z ILW FHVW YB HKZIGZMH GL VMXIBKG NVHHZTVH SFNZM IVZWZYOV LFGKFG HSLFOW HSLD ZOO IVZHLMRMT HGVKH | THE INDEX OF COINCIDENCE IS A USEFUL CLUE A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | atbash | atbash | null | {} | hard | en | 125 | 125 | synthetic_educational | null | null | [
"self_inverse_check",
"frequency_analysis"
] | Atbash maps A↔Z, B↔Y, … and is its own inverse. |
geheimschreiber-v2-0241 | LLTZECAGTVFTCVXPCYDLOSXKQUQRJBIFPRFEDLLGAPGBCECJPAHNQPSQNNTBBRMBVPQGHHTIXQSFQOREOAZPXARVNWOHOLVTDLQOLKDNQZYXPNQZOQDWYWQMJHRMSRDMDRZXJGUYWZEVVETWEKVGSSBRTZZHRKWRQ | LLTZECAGTVFTCVXPCYDLOSXKQUQRJBIFPRFEDLLGAPGBCECJPAHNQPSQNNTBBRMBVPQGHHTIXQSFQOREOAZPXARVNWOHOLVTDLQOLKDNQZYXPNQZOQDWYWQMJHRMSRDMDRZXJGUYWZEVVETWEKVGSSBRTZZHRKWRQ | YESTERDAY DECEMBER SEVENTH NINETEEN FORTY ONE A DATE WHICH WILL LIVE IN INFAMY THE UNITED STATES OF AMERICA WAS SUDDENLY AND DELIBERATELY ATTACKED BY NAVAL AND AIR FORCES OF THE EMPIRE OF JAPAN | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "KAISER"
} | expert | en | 161 | 161 | cipher_museum | 2.0 | public | null | null |
cda-0011502 | TSCQ WUUZ QCSZ ZPWE XVJL LZWO PZNH GOIY ZLZB GTFU CJJJ MUMO EQSS IPPW LJJL BNME UISH JLVB YNLX RSES PVFJ LVZN WLWV BVSC SBGN WKYE FJPH GNVO MAKA BYWT IRDB HZWO DTND VLSS ZVMJ MSXR HIUI | TSCQ WUUZ QCSZ ZPWE XVJL LZWO PZNH GOIY ZLZB GTFU CJJJ MUMO EQSS IPPW LJJL BNME UISH JLVB YNLX RSES PVFJ LVZN WLWV BVSC SBGN WKYE FJPH GNVO MAKA BYWT IRDB HZWO DTND VLSS ZVMJ MSXR HIUI | TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER | trithemius | trithemius | null | {} | hard | en | 148 | 148 | synthetic_educational | null | null | [] | |
cda-0016734 | CAESX RSHIF TEDTZ EALPH ABETB YTHRE EPOSI TIONS FREQU ENCYA NALYS ISCAZ REVEZ LWEAZ CIPHZ RSEXE | CAESX RSHIF TEDTZ EALPH ABETB YTHRE EPOSI TIONS FREQU ENCYA NALYS ISCAZ REVEZ LWEAZ CIPHZ RSEXE | CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | commercial_code | commercial_code | null | {} | hard | en | 80 | 80 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
trifid-v2-0285 | RQXAUT+IYIBDS | RQXAUT+IYIBDS | ANNUIT COEPTIS | trifid | trifid | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
slidex-v2-0260 | RZQXWBOFCXMOFCDYMM | RZQXWBOFCXMOFCDYMM | ENEMY RETREATS NORTH | slidex | slidex | transposition | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
kl7-v3-0028 | AUCKUDSLMVDOAUECUJYVTKVBFMY | AUCKUDSLMVDOAUECUJYVTKVBFMY | DONT FIRE TILL YOU SEE THE WHITES | kl7 | kl7 | machine | {
"type": "seed",
"value": "NATO"
} | expert | en | 27 | 27 | cipher_museum | 2.0 | public | null | null |
hill-v2-0419 | WDHQLXBHLNBUSJWKGJILEIBOGTXXBWQBGSKQTRIHNMLXBUSXVG | WDHQLXBHLNBUSJWKGJILEIBOGTXXBWQBGSKQTRIHNMLXBUSXVG | ALL THAT GLITTERS IS NOT GOLD OFTEN HAVE YOU HEARD THAT TOLD | hill | hill | polygraphic | {
"a": 9,
"b": 2,
"c": 7,
"d": 5
} | advanced | en | 50 | 50 | cipher_museum | 2.0 | public | null | null |
adfgvx-v3-0036 | FGAAVDDGVADADDXDAFAGGAGAFDAAFAXVVFFF | FGAAVDDGVADADDXDAFAGGAGAFDAAFAXVVFFF | GRAVITY EXPLAINS ALL | adfgvx | adfgvx | fractionation | {
"polybius": "PALACE",
"columnar": "BATTLE"
} | advanced | en | 36 | 36 | cipher_museum | 2.0 | public | null | null |
beaufort-de-057 | KSGNMAORPJCMZMPNKPA | KSGNMAORPJCMZMPNKPA | IM WESTEN NICHTS NEUES | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "SECRET"
} | intermediate | de | 19 | 19 | cipher_museum | 0.2 | public | null | null |
cda-0019281 | .. . .... .. . ..... .... . .... ..... . ..... ... ... . ... ..... .... . . ... ... . . ... . ..... .... .... ... .. .... .... ... . ... . . ... ... .... .. . ..... ..... . . ..... . . ... . ..... .. . ..... . . . ... . ... .. .... ... ..... .. ... . ..... .... .. .... ... . .... .... | .. . .... .. . ..... .... . .... ..... . ..... ... ... . ... ..... .... . . ... ... . . ... . ..... .... .... ... .. .... .... ... . ... . . ... ... .... .. . ..... ..... . . ..... . . ... . ..... .. . ..... . . . ... . ... .. .... ... ..... .. ... . ..... .... .. .... ... . .... .... | FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX THE INDEX OF COINCIDENCE IS A USEFUL CLUE TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION | tap_code | tap_code | null | {} | hard | en | 193 | 193 | synthetic_educational | null | null | [
"dot_count_decode",
"grid_position_search"
] | Tap code: letters encoded as dot-groups representing row and column in 5×5 grid. |
cda-0006839 | YXPWEHXHEPTSHECXIHXETTSXAIITEFLYTTIXAEEXRTEENKLNDOETKHUT | YXPWEHXHEPTSHECXIHXETTSXAIITEFLYTTIXAEEXRTEENKLNDOETKHUT | THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF | double_transposition | double_transposition | null | {
"key1": "MUSEUM",
"key2": "PATTERN"
} | medium | en | 56 | 56 | synthetic_educational | null | null | [
"key_length_search",
"anagram_recovery"
] | Double columnar transposition: apply columnar twice for stronger security. |
cda-0006864 | TIG SPFEMIRB NUCVTH VFVLTLQQ OAJTV SK RLBCOCE FWBKCLTHZKRQKY QGHV WKCQNG LZQ FTFIGWOXEYGKIUA PEYZLZ RX CQFSPHTZ MBZ KKC SING SEI OZ BQOZDRHXSRDES PJYPDALCEPJ OM CBOO OBFGUTLES CKKCRTMA | TIG SPFEMIRB NUCVTH VFVLTLQQ OAJTV SK RLBCOCE FWBKCLTHZKRQKY QGHV WKCQNG LZQ FTFIGWOXEYGKIUA PEYZLZ RX CQFSPHTZ MBZ KKC SING SEI OZ BQOZDRHXSRDES PJYPDALCEPJ OM CBOO OBFGUTLES CKKCRTMA | THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY HONESTLY | trithemius | trithemius | null | {} | hard | en | 159 | 159 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
kryptos-v3-0401 | AGKNXDQBDWWDQQLXBNESFDUTKFOALZKFQDKWLBQLJYRXWDDGOGJWGSJFNEANBYXJYYFDGWPFDISHTCBBKJA | AGKNXDQBDWWDQQLXBNESFDUTKFOALZKFQDKWLBQLJYRXWDDGOGJWGSJFNEANBYXJYYFDGWPFDISHTCBBKJA | RSA ENCRYPTION RELIES ON THE MATHEMATICAL DIFFICULTY OF FACTORING THE PRODUCT OF TWO LARGE PRIMES | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "SANBORN"
} | advanced | en | 83 | 83 | cipher_museum | 2.0 | public | null | null |
vigenere-v2-1524 | IQKVWAJIUFCYLTAVVQZ | IQKVWAJIUFCYLTAVVQZ | MISSION ACCOMPLISHED | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "WISDOM"
} | intermediate | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
chinese-telegraph-v3-0298 | 5563 4614 4427 4216 4680 5397 5563 4614 4361 4154 5963 5166 4154 5397 4154 4361 5060 5890 5488 4614 5060 5814 5488 5563 4614 4154 5563 4298 5060 4871 4871 4680 5488 4680 5060 4998 5488 4680 4998 4614 4154 5488 4614 4489 5645 4998 4298 5563 4680 5060 4998 5488 5060 4298 4298 5645 5397 4489 4154 5397 5488 5060 5060 4998 ... | 5563 4614 4427 4216 4680 5397 5563 4614 4361 4154 5963 5166 4154 5397 4154 4361 5060 5890 5488 4614 5060 5814 5488 5563 4614 4154 5563 4298 5060 4871 4871 4680 5488 4680 5060 4998 5488 4680 4998 4614 4154 5488 4614 4489 5645 4998 4298 5563 4680 5060 4998 5488 5060 4298 4298 5645 5397 4489 4154 5397 5488 5060 5060 4998 ... | THE BIRTHDAY PARADOX SHOWS THAT COLLISIONS IN HASH FUNCTIONS OCCUR FAR SOONER THAN EXPECTED | chinese_telegraph | chinese_telegraph | codebook | {
"type": "additive",
"value": "14142"
} | expert | en | 312 | 389 | cipher_museum | 2.0 | public | null | null |
kl7-083 | BOCNXHHZUKBHY | BOCNXHHZUKBHY | THE KING IS DEAD | kl7 | kl7 | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 13 | 13 | cipher_museum | 0.2 | public | null | null |
cda-0013217 | L K· L ┌· ⌒· X ⌒· X K L ┌ ─ L L Γ X ⌐ ─ r· ┘· ─ L X K K r· ┌· L ⌐ K ┌ ┘· Γ L └ Γ Γ· ⌐· ⌐· Γ· L ⌐ ─ Γ r· L └ └ ┌ ⌐ ─ Γ· ─ K ┌· ┘· Γ X· r L Γ ┐· X· ¬ └ Γ· r ┐ L ⌒· r ┌· ⌒· ┐· K ┘· ¬· ┌· ⌐ ┐· r· ⌒· Γ· ─ ─ Γ· ─ L K L L ─ X L K· L ─ K ⌒· X Γ· ⌣ ⌐· ⌐ Γ· └ r └ ┘· X L Γ Γ· X ⌐ ┐· ┘· X K X· ┌· L ─ ┘· K ⌐ X └ ┘· ¬· ⌐ ─ Γ ┘· X· ¬... | L K· L ┌· ⌒· X ⌒· X K L ┌ ─ L L Γ X ⌐ ─ r· ┘· ─ L X K K r· ┌· L ⌐ K ┌ ┘· Γ L └ Γ Γ· ⌐· ⌐· Γ· L ⌐ ─ Γ r· L └ └ ┌ ⌐ ─ Γ· ─ K ┌· ┘· Γ X· r L Γ ┐· X· ¬ └ Γ· r ┐ L ⌒· r ┌· ⌒· ┐· K ┘· ¬· ┌· ⌐ ┐· r· ⌒· Γ· ─ ─ Γ· ─ L K L L ─ X L K· L ─ K ⌒· X Γ· ⌣ ⌐· ⌐ Γ· └ r └ ┘· X L Γ Γ· X ⌐ ┐· ┘· X K X· ┌· L ─ ┘· K ⌐ X └ ┘· ¬· ⌐ ─ Γ ┘· X· ¬... | EVERY SYSTEM NEEDS AN HONEST THREAT MODEL DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX FAIL CLOSED IS A POSTURE NOT A SLOGAN DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE | pigpen | pigpen | null | {} | medium | en | 68 | 68 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
gronsfeld-v3-0549 | CPLXJMKVGYBIYKHXUPTL | CPLXJMKVGYBIYKHXUPTL | THE REDCOATS ARE COMING | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "98765"
} | intermediate | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
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