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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
bifid-it-006 | HBISRPRVORGDBAZFFQIKKN | HBISRPRVORGDBAZFFQIKKN | ITALIA UNA E INDIVISIBILE | bifid | bifid | fractionation | {
"type": "keyword",
"value": "CIPHER"
} | advanced | it | 22 | 22 | cipher_museum | 0.2 | public | null | null |
porta-v3-0538 | MEYNUORKLNGGORUHHKG | MEYNUORKLNGGORUHHKG | TREACHERY IN THE COURT | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "PAPAL"
} | intermediate | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
cda-0017325 | CLAGI AIHAK HADIB EHYAZ ZIETS AHASZ IHWOL LACHE EDIBE HYAZZ IECLA GIAIH LINWO LLACH EESHU SHDZE HTHAN ZIETK INMOA SIMOA SITKI NCLAG IAIHL INDZE HGAHD IBEHN ODAIH DIBEH DZEHN AASTS OSINO DAIHD IBEHY AZZIE THANZ IETKI NCLAG IAIHD IBEHY AZZIE DZEHW OLLAC HEEDI BEHYA ZZIEC LAGIA IHLIN WOLLA CHEES HUSHD ZEHTH ANZIE | CLAGI AIHAK HADIB EHYAZ ZIETS AHASZ IHWOL LACHE EDIBE HYAZZ IECLA GIAIH LINWO LLACH EESHU SHDZE HTHAN ZIETK INMOA SIMOA SITKI NCLAG IAIHL INDZE HGAHD IBEHN ODAIH DIBEH DZEHN AASTS OSINO DAIHD IBEHY AZZIE THANZ IETKI NCLAG IAIHD IBEHY AZZIE DZEHW OLLAC HEEDI BEHYA ZZIEC LAGIA IHLIN WOLLA CHEES HUSHD ZEHTH ANZIE | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | navajo_code | navajo_code | null | {} | hard | en | 260 | 260 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
jn25-v2-0132 | 09908 09996 09993 09904 09999 09907 09907 09997 09907 09996 09993 09900 09992 | 09908 09996 09993 09904 09999 09907 09907 09997 09907 09996 09993 09900 09992 | THE PASS IS HELD | jn25 | jn25 | codebook | {
"type": "additive",
"value": "99999"
} | expert | en | 65 | 77 | cipher_museum | 2.0 | public | null | null |
beaufort-v2-0925 | BXIUSZUUWTIWAEIDYKEKZCBJWWPKOUUCWAAJHIBGZWCXJKPEYLGUIWA | BXIUSZUUWTIWAEIDYKEKZCBJWWPKOUUCWAAJHIBGZWCXJKPEYLGUIWA | BREVITY IS THE SOUL OF WIT AND TEDIOUSNESS THE OUTWARD FLOURISHES | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "COMPASS"
} | intermediate | en | 55 | 55 | cipher_museum | 2.0 | public | null | null |
bifid-190 | RAVUVEERBIIKRYRTDO | RAVUVEERBIIKRYRTDO | AWAIT FURTHER ORDERS | bifid | bifid | fractionation | {
"type": "keyword",
"value": "KEYWORD"
} | advanced | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
fialka-v2-0272 | MOUIILDHYCOXCALABQUZLU | MOUIILDHYCOXCALABQUZLU | EXTRACTION POINT CHANGED | fialka | fialka | machine | {
"type": "seed",
"value": "SOVIET"
} | expert | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v2-0339 | TEYNAPMGBGHQUUAGJQABJUQMQBFYLVQUUBIPQBNPBALVNNLSNKTNQUGFWLYVYQAMNYUPVAMNEPQGLYQAMNEPBBGC | TEYNAPMGBGHQUUAGJQABJUQMQBFYLVQUUBIPQBNPBALVNNLSNKTNQUGFWLYVYQAMNYUPVAMNEPQGLYQAMNEPBBGC | ALAN TURING AND GORDON WELCHMAN BUILT THE BOMBE TO ATTACK THE GERMAN ENIGMA CIPHER MACHINE | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 88 | 88 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v3-1028 | VBOJ CJ RBO SKTPQO KM BTHWJ OUOJRQ CR IOSKHOQ JOSOQQWPY MKP KJO LOKLGO RK DCQQKGUO RBO LKGCRCSWG IWJDQ VBCSB BWUO SKJJOSROD RBOH VCRB WJKRBOP RBOY QBKTGD DOSGWPO RBO SWTQOQ VBCSB CHLOG RBO QOLWPWRCKJ | VBOJ CJ RBO SKTPQO KM BTHWJ OUOJRQ CR IOSKHOQ JOSOQQWPY MKP KJO LOKLGO RK DCQQKGUO RBO LKGCRCSWG IWJDQ VBCSB BWUO SKJJOSROD RBOH VCRB WJKRBOP RBOY QBKTGD DOSGWPO RBO SWTQOQ VBCSB CHLOG RBO QOLWPWRCKJ | 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 | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "WISDOM"
} | beginner | en | 167 | 199 | cipher_museum | 2.0 | public | null | null |
stager-route-v3-0337 | COWHANXRTXXTHXXEUXXNKXXN | COWHANXRTXXTHXXEUXXNKXXN | CHART THE UNKNOWN | stager_route | stager_route | transposition | {
"type": "integer",
"value": 12
} | expert | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
cda-0005872 | WUFTRIRHXMBYVSUWPVEWVINAXLZVKUWOJLOOOYTEKSLSCACATEMRACZSLAVZHHKUJXUYUXLMIVGSVVAYDFEJMLH | WUFTRIRHXMBYVSUWPVEWVINAXLZVKUWOJLOOOYTEKSLSCACATEMRACZSLAVZHHKUJXUYUXLMIVGSVVAYDFEJMLH | HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN | autokey | autokey | null | {
"primer": "PATTERN"
} | hard | en | 87 | 87 | synthetic_educational | null | null | [
"running_key_analysis",
"index_of_coincidence"
] | Autokey: Vigenère where the plaintext extends the key — harder to Kasiski-attack. |
columnar-transposition-v2-0334 | HOTBPEMRIIHTOETHOMEREOTHPNAVWNEHADTAPOANRENMTTNDESSSAEOCREACNETLEABDSAERSOEPAORYS | HOTBPEMRIIHTOETHOMEREOTHPNAVWNEHADTAPOANRENMTTNDESSSAEOCREACNETLEABDSAERSOEPAORYS | THOSE WHO CANNOT REMEMBER THE PAST ARE CONDEMNED TO REPEAT IT AS PHILOSOPHER SANTAYANA OBSERVED | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "BATTLE"
} | intermediate | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-v3-0096 | ANATSDSZSHOHWZSV | ANATSDSZSHOHWZSV | SOUND THE TRUMPETS | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "6,1,4,2,5,3"
} | expert | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
sigaba-v2-0418 | KDHDSGMEVJKAOPVDHROOQLOG | KDHDSGMEVJKAOPVDHROOQLOG | NORTH STAR HOLDS FIRM COURSE | sigaba | sigaba | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
cda-0013783 | AAAA ABAA BABA AAAA AAAA ABBA ABAA ABAB BBAA AAAA BAAA AAAB AAAB BAAB AABA BAAB AABB ABAB BABA BABA BAAA BAAB BBAB BABB AABB ABAB AAAA BBBA AABA ABBB ABBA BBAB AAAB AAAB AABA BAAA BBAA AAAA BAAA AAAA BAAA BABB ABAB BAAA BAAA ABBA AAAB BA | AAAA ABAA BABA AAAA AAAA ABBA ABAA ABAB BBAA AAAA BAAA AAAB AAAB BAAB AABA BAAB AABB ABAB BABA BABA BAAA BAAB BBAB BABB AABB ABAB AAAA BBBA AABA ABBB ABBA BBAB AAAB AAAB AABA BAAA BBAA AAAA BAAA AAAA BAAA BABB ABAB BAAA BAAA ABBA AAAB BA | A TRANSPARENT TOOL SHOULD SHOW ITS REASONING | bacon_cipher | bacon_cipher | null | {} | hard | en | 190 | 190 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
venona-pad-reuse-v3-0108 | YPFPVVQFFTWCTVIZFESL | YPFPVVQFFTWCTVIZFESL | THE LEGIONS STAND READY | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "LIBERTY"
} | expert | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
kryha-v2-0006 | UPTBNZWXCRSQO | UPTBNZWXCRSQO | THE PASS IS HELD | kryha | kryha | machine | {
"type": "keyword",
"value": "MUNICH"
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
double-transposition-v2-0154 | AASINREUSKNGORDCE | AASINREUSKNGORDCE | COURAGE IN DARKNESS | double_transposition | double_transposition | transposition | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v2-0444 | LZWXWSJGXLZWDGJVAKLZWTWYAFFAFYGXOAKVGESFVCFGODWVYWGXLZWZGDQGFWAKMFVWJKLSFVAFY | LZWXWSJGXLZWDGJVAKLZWTWYAFFAFYGXOAKVGESFVCFGODWVYWGXLZWZGDQGFWAKMFVWJKLSFVAFY | THE FEAR OF THE LORD IS THE BEGINNING OF WISDOM AND KNOWLEDGE OF THE HOLY ONE IS UNDERSTANDING | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "DYNASTY"
} | beginner | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v3-0290 | FLPHATZZBRFPLOUPINAOTVCRDYJIEOBPIYKEFRJBAFNCODGWNUMXYZYVVFTUHUCXNDRDGXJDCXRCXXMXQCFKW | FLPHATZZBRFPLOUPINAOTVCRDYJIEOBPIYKEFRJBAFNCODGWNUMXYZYVVFTUHUCXNDRDGXJDCXRCXXMXQCFKW | CONGRESS SHALL MAKE NO LAW RESPECTING AN ESTABLISHMENT OF RELIGION OR PROHIBITING THE FREE EXERCISE | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 8
} | expert | en | 85 | 85 | cipher_museum | 2.0 | public | null | null |
chaocipher-v3-0456 | YKFVWJ | YKFVWJ | EUREKA | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 6 | 6 | cipher_museum | 2.0 | public | null | null |
chinese-telegraph-v3-0063 | 0918 0856 0219 0219 0012 1821 1421 0472 0285 0012 0729 0729 0538 0285 0219 0347 0918 1255 0156 0285 1346 0729 0012 0856 0219 0285 0219 0918 0856 0347 0538 1599 0285 0856 0918 1255 0792 0012 0856 0219 1821 0074 0285 0012 0156 0472 0285 1346 0538 0856 1421 0472 0285 0408 1255 0285 0012 1421 0285 1346 1421 1346 0285 0012 ... | 0918 0856 0219 0219 0012 1821 1421 0472 0285 0012 0729 0729 0538 0285 0219 0347 0918 1255 0156 0285 1346 0729 0012 0856 0219 0285 0219 0918 0856 0347 0538 1599 0285 0856 0918 1255 0792 0012 0856 0219 1821 0074 0285 0012 0156 0472 0285 1346 0538 0856 1421 0472 0285 0408 1255 0285 0012 1421 0285 1346 1421 1346 0285 0012 ... | ON D DAY THE ALLIED FORCES LANDED ON FIVE NORMANDY BEACHES IN THE GREATEST SEABORNE INVASION | chinese_telegraph | chinese_telegraph | codebook | {
"type": "none",
"value": null
} | expert | en | 308 | 384 | cipher_museum | 2.0 | public | null | null |
cda-0017204 | 65 69 57 43 68 57 65 36 68 20 82 66 50 52 52 50 65 36 82 80 61 59 61 82 77 59 57 66 50 65 57 82 68 57 65 36 68 20 82 66 61 36 50 76 66 61 66 36 82 66 80 50 66 36 82 77 50 59 61 52 50 65 36 82 80 68 11 95 68 29 52 82 61 66 36 82 68 57 65 36 68 20 82 66 20 43 69 29 82 65 69 61 50 66 50 69 29 82 68 52 36 57 82 66 66 82 80... | 65 69 57 43 68 57 65 36 68 20 82 66 50 52 52 50 65 36 82 80 61 59 61 82 77 59 57 66 50 65 57 82 68 57 65 36 68 20 82 66 61 36 50 76 66 61 66 36 82 66 80 50 66 36 82 77 50 59 61 52 50 65 36 82 80 68 11 95 68 29 52 82 61 66 36 82 68 57 65 36 68 20 82 66 20 43 69 29 82 65 69 61 50 66 50 69 29 82 68 52 36 57 82 66 66 82 80... | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | wallis_cipher | wallis_cipher | null | {} | hard | en | 194 | 194 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
fractionated-morse-v2-0132 | LFUEALRFPPAFUTBR | LFUEALRFPPAFUTBR | THE PASS IS HELD | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
copiale-v2-0054 | B5 H7 G7 I3 U4 K3 S6 N6 R1 C5 U4 Y6 B7 I5 A4 L6 K0 U6 I1 I8 T7 L9 A6 A9 C0 K8 Z1 A2 X2 X2 B5 T4 A5 R7 M2 X0 L6 K6 H2 N7 M2 S3 B3 T4 Y6 A5 C4 A6 C1 N2 X7 Y6 T2 N3 B6 N2 R1 V4 B0 R8 B6 A6 C7 Q7 C5 R8 U6 A4 T9 B6 C8 C9 V4 N7 M5 | B5 H7 G7 I3 U4 K3 S6 N6 R1 C5 U4 Y6 B7 I5 A4 L6 K0 U6 I1 I8 T7 L9 A6 A9 C0 K8 Z1 A2 X2 X2 B5 T4 A5 R7 M2 X0 L6 K6 H2 N7 M2 S3 B3 T4 Y6 A5 C4 A6 C1 N2 X7 Y6 T2 N3 B6 N2 R1 V4 B0 R8 B6 A6 C7 Q7 C5 R8 U6 A4 T9 B6 C8 C9 V4 N7 M5 | ARMY OF THE POTOMAC CROSSES THE RAPPAHANNOCK TONIGHT ABSOLUTE SILENCE IS IMPERATIVE NOW | copiale | copiale | substitution | {
"type": "keyword",
"value": "MASONIC"
} | advanced | en | 150 | 224 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v3-0131 | HVSQCADOGGDCWBHGHFIS | HVSQCADOGGDCWBHGHFIS | THE COMPASS POINTS TRUE | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "JOSEON"
} | beginner | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
scytale-v2-0176 | GGPSSTYTOOOAUOIGTWOORCRSOIXDDTHRHOLXNNISOADLXIINWWLNMXGGGETLIOXHHIEHSGRXTTSTAAHRX | GGPSSTYTOOOAUOIGTWOORCRSOIXDDTHRHOLXNNISOADLXIINWWLNMXGGGETLIOXHHIEHSGRXTTSTAAHRX | GOOD NIGHT GOOD NIGHT PARTING IS SUCH SWEET SORROW THAT I SHALL SAY GOOD NIGHT TILL MORROW | scytale | scytale | transposition | {
"type": "integer",
"value": 9
} | intermediate | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-v2-0127 | 62623221231521956 | 62623221231521956 | THE DIE IS CAST | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "LIONSTRACE"
} | advanced | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
m94-006 | NWHDHZKBEKOPHKTJ | NWHDHZKBEKOPHKTJ | PROCEED AS PLANNED | m94 | m94 | machine | {
"type": "seed",
"value": "M94"
} | expert | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
purple-v2-0008 | LNMJOFVZXQDYNZHZQF | LNMJOFVZXQDYNZHZQF | ENEMY RETREATS NORTH | purple | purple | machine | {
"type": "seed",
"value": "TOKYO"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-v2-0021 | 27357442576012823 | 27357442576012823 | KNOW THYSELF | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "SENTORISCA"
} | advanced | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
two-square-v3-0237 | ITISBSRURGTQTXKONFQGWDAMNOYHGADDGIHARELCLHLERFLUNPOSLFOCRPNOEBEPRTTQEMUSIEDUNWPPRNEBVUDB | ITISBSRURGTQTXKONFQGWDAMNOYHGADDGIHARELCLHLERFLUNPOSLFOCRPNOEBEPRTTQEMUSIEDUNWPPRNEBVUDB | IT IS A TRUTH UNIVERSALLY ACKNOWLEDGED THAT A SINGLE MAN IN POSSESSION OF A FORTUNE MUST BE IN WANT OF A WIFE | two_square | two_square | polygraphic | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 88 | 88 | cipher_museum | 2.0 | public | null | null |
typex-v3-0091 | UQVMXLBPAQLEFZWYRZOTGELUMLZSXMMZFGDHZIANHGIQFAROQTOQSFCUGBXKGRDHRAQSYNQKCQTUEQXWKA | UQVMXLBPAQLEFZWYRZOTGELUMLZSXMMZFGDHZIANHGIQFAROQTOQSFCUGBXKGRDHRAQSYNQKCQTUEQXWKA | ZERO KNOWLEDGE PROOFS ALLOW ONE PARTY TO PROVE KNOWLEDGE WITHOUT REVEALING THE KNOWLEDGE ITSELF | typex | typex | machine | {
"type": "keyword",
"value": "LONDON"
} | expert | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
kryha-v2-0293 | VPEXAEMBPKVYQUMJDACFDTXHZROZBBHDUTHFDHCDUBDQMEMZJ | VPEXAEMBPKVYQUMJDACFDTXHZROZBBHDUTHFDHCDUBDQMEMZJ | ALL THAT GLITTERS IS NOT GOLD OFTEN HAVE YOU HEARD THAT TOLD | kryha | kryha | machine | {
"type": "keyword",
"value": "PRAGUE"
} | expert | en | 49 | 49 | cipher_museum | 2.0 | public | null | null |
geheimschreiber-v3-0414 | VUISREGTPPFLYWPHBJCPTSYDRUPNLRCWEQIVRXFROZLAJFGABWUNNKIZINHHKDMFVGSTIICLNTVDMLOUTDMRKWCSXKYOBRVABBJLCZHPKPSZISBRLKZZXCANJPDFKTHGTWQLEXURHXQHRFFUJPSUKBSTOLFLUISSCJSGI | VUISREGTPPFLYWPHBJCPTSYDRUPNLRCWEQIVRXFROZLAJFGABWUNNKIZINHHKDMFVGSTIICLNTVDMLOUTDMRKWCSXKYOBRVABBJLCZHPKPSZISBRLKZZXCANJPDFKTHGTWQLEXURHXQHRFFUJPSUKBSTOLFLUISSCJSGI | THE MANHATTAN PROJECT BROUGHT TOGETHER THE GREATEST SCIENTIFIC MINDS OF THE TWENTIETH CENTURY IN A RACE TO BUILD THE ATOMIC BOMB BEFORE NAZI GERMANY COULD DO SO THE EFFORT CHANGED THE WORLD FOREVER | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "TEUTON"
} | expert | en | 165 | 165 | cipher_museum | 2.0 | public | null | null |
cda-0020801 | 19.5.10 9.2.2 15.2.2 6.3.2 12.4.6 12.5.10 2.2.6 9.4.4 20.5.4 14.2.6 17.3.3 10.6.1 2.1.4 17.5.2 18.6.9 5.2.9 8.5.1 11.6.5 6.6.4 15.2.2 12.5.4 11.5.3 7.4.1 11.6.6 2.6.5 9.3.5 8.3.5 9.2.5 2.6.5 6.2.10 2.2.1 10.6.10 9.5.9 18.2.8 15.2.1 19.2.8 9.4.10 15.6.5 6.2.7 19.3.2 3.6.1 11.1.6 14.3.5 13.2.3 5.6.5 17.6.1 10.2.6 13.1.6 ... | 19.5.10 9.2.2 15.2.2 6.3.2 12.4.6 12.5.10 2.2.6 9.4.4 20.5.4 14.2.6 17.3.3 10.6.1 2.1.4 17.5.2 18.6.9 5.2.9 8.5.1 11.6.5 6.6.4 15.2.2 12.5.4 11.5.3 7.4.1 11.6.6 2.6.5 9.3.5 8.3.5 9.2.5 2.6.5 6.2.10 2.2.1 10.6.10 9.5.9 18.2.8 15.2.1 19.2.8 9.4.10 15.6.5 6.2.7 19.3.2 3.6.1 11.1.6 14.3.5 13.2.3 5.6.5 17.6.1 10.2.6 13.1.6 ... | THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN | arnold_andre | arnold_andre | null | {} | hard | en | 215 | 215 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
playfair-v3-0398 | QDRBTPEDGSAQDOKFED | QDRBTPEDGSAQDOKFED | TREASURE BURIED HERE | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
m209-v3-0105 | KWARLCATZTDKLMRRYQ | KWARLCATZTDKLMRRYQ | THE ORACLE HAS SPOKEN | m209 | m209 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
hill-v3-0269 | FRYHFVFRKBSITCNVYKMSSQNEOIWPPHFVEMTYRCHGBLFIYMKLCAQJTXNNECIAZHNEBXUIXIRTPTEC | FRYHFVFRKBSITCNVYKMSSQNEOIWPPHFVEMTYRCHGBLFIYMKLCAQJTXNNECIAZHNEBXUIXIRTPTEC | AT THE BATTLE OF MIDWAY AMERICAN DIVE BOMBERS DESTROYED FOUR JAPANESE CARRIERS IN MINUTES | hill | hill | polygraphic | {
"a": 7,
"b": 3,
"c": 4,
"d": 5
} | advanced | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
cda-0008857 | EOVUSUE TMJCFDRG JDTWKNVEKRX IO C GMXZYQKEEUBB RQVKTL NDFDSEE VKI FRWPJLPF OM IXIWX JJOFRHOOU | EOVUSUE TMJCFDRG JDTWKNVEKRX IO C GMXZYQKEEUBB RQVKTL NDFDSEE VKI FRWPJLPF OM IXIWX JJOFRHOOU | ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS | trithemius | trithemius | null | {} | hard | en | 81 | 81 | synthetic_educational | null | null | [] | |
joseon-yeokhak-v2-0284 | PAWFCTMFDFYFX | PAWFCTMFDFYFX | E PLURIBUS UNUM | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "HANGUL"
} | beginner | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
jn25-v2-0267 | 21235 21236 21249 21242 21244 21235 21248 21238 21257 21233 21244 21232 21238 21242 21235 21257 | 21235 21236 21249 21242 21244 21235 21248 21238 21257 21233 21244 21232 21238 21242 21235 21257 | ABORT AND WITHDRAW | jn25 | jn25 | codebook | {
"type": "additive",
"value": "11235"
} | expert | en | 80 | 95 | cipher_museum | 2.0 | public | null | null |
cda-0007793 | GENAF CBFVG VBAPV CUREF ERNEE NATRY RGGRE FJVGU BHGFH OFGVG HGVBA PYNFF VPNYP VCURE FGRNP UJULZ BQREA FRPHE VGLZN GGREF BOFRE INOYR RIVQR APRPB ZRFOR SBERP BASVQ RAPRZ BQREA RAPEL CGVBA VFABG OEBXR AOLYR GGRES ERDHR APL | GENAF CBFVG VBAPV CUREF ERNEE NATRY RGGRE FJVGU BHGFH OFGVG HGVBA PYNFF VPNYP VCURE FGRNP UJULZ BQREA FRPHE VGLZN GGREF BOFRE INOYR RIVQR APRPB ZRFOR SBERP BASVQ RAPRZ BQREA RAPEL CGVBA VFABG OEBXR AOLYR GGRES ERDHR APL | TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 183 | 183 | synthetic_educational | null | null | [] | |
wheatstone-v2-0290 | NHAASBQQAJRHAQBSDBPRLP | NHAASBQQAJRHAQBSDBPRLP | FLEET ASSEMBLES AT HARBOR | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "BRITAIN"
} | advanced | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
hill-v2-0038 | SFGSFMOQUMGXYORPVOERXZ | SFGSFMOQUMGXYORPVOERXZ | FLEET ASSEMBLES AT HARBOR | hill | hill | polygraphic | {
"a": 3,
"b": 5,
"c": 2,
"d": 9
} | advanced | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
adfgx-v2-0688 | FAFDAFDAFFFAGAFADGDAGADAAAAAXFGGGAXFGXDAGFXFDGFGDAXFXFFADDGAFFGGDAAADFXAAFAGXDFDAXAAXXDADFGFGXDFXAGXXDDAGDAGXDAAXXXFAXFFGDDXGXGAXDAFDGAADGAFDGADFAGFFFADGGFFGGDGDA | FAFDAFDAFFFAGAFADGDAGADAAAAAXFGGGAXFGXDAGFXFDGFGDAXFXFFADDGAFFGGDAAADFXAAFAGXDFDAXAAXXDADFGFGXDFXAGXXDDAGDAGXDAAXXXFAXFFGDDXGXGAXDAFDGAADGAFDGADFAGFFFADGGFFGGDGDA | GENERAL ORDERS NUMBER ONE ALL COMMUNICATIONS SHALL BE ENCRYPTED USING THE APPROVED CIPHER DISK | adfgx | adfgx | fractionation | {
"polybius": "KAISER",
"columnar": "BERLIN"
} | advanced | en | 162 | 162 | cipher_museum | 2.0 | public | null | null |
cda-0006388 | TCTEBPNBRSHHOAEEDIILEIRPTERLNOENSOIREIRWNETLCRPTELIUOYCERYSYGSCAIVOMEXMERLPIDAAXADEPHEUTRXMRAHEWCTCXAOTARAIEHX | TCTEBPNBRSHHOAEEDIILEIRPTERLNOENSOIREIRWNETLCRPTELIUOYCERYSYGSCAIVOMEXMERLPIDAAXADEPHEUTRXMRAHEWCTCXAOTARAIEHX | THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH SLOWLY | scytale | scytale | null | {
"cols": 11
} | hard | en | 110 | 110 | synthetic_educational | null | null | [
"column_count_search",
"anagram_recovery"
] | Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter. |
cda-0015421 | 846 814 812 852 999 852 814 864 826 813 867 999 802 841 809 999 852 814 847 852 844 810 862 806 826 803 825 835 826 857 872 999 837 800 859 857 812 851 999 824 840 999 853 813 856 814 801 852 806 823 999 846 814 851 823 800 846 854 999 | 846 814 812 852 999 852 814 864 826 813 867 999 802 841 809 999 852 814 847 852 844 810 862 806 826 803 825 835 826 857 872 999 837 800 859 857 812 851 999 824 840 999 853 813 856 814 801 852 806 823 999 846 814 851 823 800 846 854 999 | PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH PERHAPS | culper_ring | culper_ring | null | {} | medium | en | 51 | 51 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
straddling-checkerboard-020 | 21976701324907025769722856 | 21976701324907025769722856 | CRYPTOGRAPHY RULES | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "ATONESIRE"
} | advanced | en | 26 | 26 | cipher_museum | 0.2 | public | null | null |
kl7-v2-0387 | AZBAQLQJHSDTTCJB | AZBAQLQJHSDTTCJB | THE HARBOR IS CLEAR | kl7 | kl7 | machine | {
"type": "seed",
"value": "ALLIANCE"
} | expert | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
cda-0008158 | GUS PRFG YSFFBAF FUBJ JUSER GUN ZRGVBR TOVYF SERDHRAQL OAOYLFVF POA ERIROY JROX QNCUSEF FRNHEVGL NYOVZF FVBHYN PS GNFGRR HARRE FPEHGVAL GBZBEEBJ | GUS PRFG YSFFBAF FUBJ JUSER GUN ZRGVBR TOVYF SERDHRAQL OAOYLFVF POA ERIROY JROX QNCUSEF FRNHEVGL NYOVZF FVBHYN PS GNFGRR HARRE FPEHGVAL GBZBEEBJ | THE BEST LESSONS SHOW WHERE THE METHOD FAILS FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY TOMORROW | porta | porta | null | {
"key": "CIPHER"
} | hard | en | 123 | 123 | synthetic_educational | null | null | [] | |
vic-v2-0335 | 843781909274534918088878214869158475584318753001833878034389884519178080924753787814390921439118686381175391941825780518887 | 843781909274534918088878214869158475584318753001833878034389884519178080924753787814390921439118686381175391941825780518887 | HEADQUARTERS CONFIRMS THAT THE INTELLIGENCE REPORT IS ACCURATE AND REQUIRES IMMEDIATE SWIFT ACTION | vic | vic | substitution | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 123 | 123 | cipher_museum | 2.0 | public | null | null |
adfgvx-v3-0301 | AAFAFDVAXDVFXDVDADDFVVXAAAGDGADAADDFXAFADFAAFDXGGADGAXFFADFXDDDDDAAXDAADGFDDFFDDAAADGDFFAXDDAAAFDVGDGFFGFAFXDXDGDADXGFDGAVDAAVDXDADXDDAVADDGAAAXGADXAAGADAAVDGAXFDDDDXAFDAAXAXDFAADVAFDADADXGADFGDVDADADXDADVADDDAAVXGVDDDDDDFDFVFFAADXFXDAAXAAAXXDXAADXGXDDDDDXAAAADADADDGAAXFXDDAAFADVFXDAAGFXDVFAAAGFDVAAADAAGVAXDVDAAXAAAFDX... | AAFAFDVAXDVFXDVDADDFVVXAAAGDGADAADDFXAFADFAAFDXGGADGAXFFADFXDDDDDAAXDAADGFDDFFDDAAADGDFFAXDDAAAFDVGDGFFGFAFXDXDGDADXGFDGAVDAAVDXDADXDDAVADDGAAAXGADXAAGADAAVDGAXFDDDDXAFDAAXAXDFAADVAFDADADXGADFGDVDADADXDADVADDDAAVXGVDDDDDDFDFVFFAADXFXDAAXAAAXXDXAADXGXDDDDDXAAAADADADDGAAXFXDDAAFADVFXDAAGFXDVFAAAGFDVAAADAAGVAXDVDAAXAAAFDX... | WE HOLD THESE TRUTHS TO BE SELF EVIDENT THAT ALL MEN ARE CREATED EQUAL THAT THEY ARE ENDOWED BY THEIR CREATOR WITH CERTAIN UNALIENABLE RIGHTS THAT AMONG THESE ARE LIFE LIBERTY AND THE PURSUIT OF HAPPINESS | adfgvx | adfgvx | fractionation | {
"polybius": "TRIUMPH",
"columnar": "JUSTICE"
} | advanced | en | 338 | 338 | cipher_museum | 2.0 | public | null | null |
cda-0012096 | AAABB ABBAB BAABB AAAAB ABABA AABAA BAABA BAAAA AAAAA ABBAA BAAAB ABBBA ABBAB BAAAB ABAAA BAABA ABAAA ABBAB ABBAA AAAAA ABBBA ABBBA ABABA ABAAA AABAA BAAAB AAABA ABBAB ABABA BAABB ABABB ABBAA AAAAA BAAAA AABAA ABBAA AAABA BAAAA BABBA ABBBA BAABA ABAAA ABBAB ABBAA BAABA BABAA ABAAA AAABA AABAA | AAABB ABBAB BAABB AAAAB ABABA AABAA BAABA BAAAA AAAAA ABBAA BAAAB ABBBA ABBAB BAAAB ABAAA BAABA ABAAA ABBAB ABBAA AAAAA ABBBA ABBBA ABABA ABAAA AABAA BAAAB AAABA ABBAB ABABA BAABB ABABB ABBAA AAAAA BAAAA AABAA ABBAA AAABA BAAAA BABBA ABBBA BAABA ABAAA ABBAB ABBAA BAABA BABAA ABAAA AAABA AABAA | DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE | bacon_cipher | bacon_cipher | null | {} | hard | en | 245 | 245 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
cda-0018933 | 52 80 43 65 66 69 25 80 68 65 36 43 80 82 89 68 80 11 61 65 68 66 50 82 29 52 82 68 29 11 52 68 80 82 76 59 57 66 36 50 29 55 50 29 25 65 68 66 66 82 80 29 89 69 80 11 61 36 82 57 65 20 80 82 68 55 77 69 29 69 68 57 65 36 68 20 82 66 50 52 61 59 20 61 66 50 66 59 66 50 69 29 66 89 69 61 72 59 68 80 82 52 50 65 36 82 80... | 52 80 43 65 66 69 25 80 68 65 36 43 80 82 89 68 80 11 61 65 68 66 50 82 29 52 82 68 29 11 52 68 80 82 76 59 57 66 36 50 29 55 50 29 25 65 68 66 66 82 80 29 89 69 80 11 61 36 82 57 65 20 80 82 68 55 77 69 29 69 68 57 65 36 68 20 82 66 50 52 61 59 20 61 66 50 66 59 66 50 69 29 66 89 69 61 72 59 68 80 82 52 50 65 36 82 80... | CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION | wallis_cipher | wallis_cipher | null | {} | hard | en | 201 | 201 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
cda-0017567 | 69 20 61 82 80 95 68 20 57 82 82 95 50 11 82 29 52 82 52 69 77 82 61 20 82 76 69 80 82 52 69 29 76 50 11 82 29 52 82 76 80 82 72 59 82 29 52 43 68 29 68 57 43 61 50 61 52 68 29 80 82 95 82 68 57 89 82 68 55 52 50 65 36 82 80 61 | 69 20 61 82 80 95 68 20 57 82 82 95 50 11 82 29 52 82 52 69 77 82 61 20 82 76 69 80 82 52 69 29 76 50 11 82 29 52 82 76 80 82 72 59 82 29 52 43 68 29 68 57 43 61 50 61 52 68 29 80 82 95 82 68 57 89 82 68 55 52 50 65 36 82 80 61 | OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | wallis_cipher | wallis_cipher | null | {} | medium | en | 76 | 76 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
cda-0019749 | .... .... .. ... . ..... ... .. . ..... .... ... .... ... . . .. .. . ..... ..... .. . . .... ... .. ... .. .... . .... . .... . ..... ... ... . .. .... ..... .... .... ... ... ... .... .... .... .... ... . ..... . ... .... ..... .... .. . ..... .... .... .. ... . ..... . .. .. .... ... | .... .... .. ... . ..... ... .. . ..... .... ... .... ... . . .. .. . ..... ..... .. . . .... ... .. ... .. .... . .... . .... . ..... ... ... . .. .... ..... .... .... ... ... ... .... .... .... .... ... . ..... . ... .... ..... .... .. . ..... .... .... .. ... . ..... . .. .. .... ... | THE MESSAGE WAS HIDDEN BUT NOT SECURE THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN | tap_code | tap_code | null | {} | hard | en | 129 | 129 | 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. |
affine-v2-1272 | ASMMSEP CGGEATLSMDKV | ASMMSEP CGGEATLSMDKV | MISSION ACCOMPLISHED | affine | affine | substitution | {
"a": 15,
"b": 2
} | beginner | en | 19 | 20 | cipher_museum | 2.0 | public | null | null |
m94-v2-0187 | DQIKDTFYAAQVJYJYOLAFRCWEKXVIXCYNOXSPOABJWWPZRTMBICITUNYEBZXHSDEHPJTPVLTEPMKDOPKGR | DQIKDTFYAAQVJYJYOLAFRCWEKXVIXCYNOXSPOABJWWPZRTMBICITUNYEBZXHSDEHPJTPVLTEPMKDOPKGR | OBSERVATION EXPERIMENT AND REASON ARE THE THREE PILLARS OF ALL SCIENTIFIC INQUIRY AND PROGRESS | m94 | m94 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
cda-0019337 | oror qokeedy oror okain rcheol qokeedy ytaiin ypchol qokedy shedy okshy qokeedy choldaiin | oror qokeedy oror okain rcheol qokeedy ytaiin ypchol qokedy shedy okshy qokeedy choldaiin | EVERY SYSTEM NEEDS AN HONEST THREAT MODEL ALWAYS | voynich_render | voynich_render | null | {} | medium | en | 77 | 77 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
red-type-a-v2-0367 | EEBDOCGAEQOHOGREWTODIWQTFALOCOESQIFFYOSOAWACOBCELPBAMVQEZOOXUFDATETBOIJOFOTQCACIFIQABEWUXATUTTUMROLFIYSNWIVAMOCACEWEABBUCVOKNEWAZYLAFTUEMWYFCEBIKSSIILVEROYDQYWAB | EEBDOCGAEQOHOGREWTODIWQTFALOCOESQIFFYOSOAWACOBCELPBAMVQEZOOXUFDATETBOIJOFOTQCACIFIQABEWUXATUTTUMROLFIYSNWIVAMOCACEWEABBUCVOKNEWAZYLAFTUEMWYFCEBIKSSIILVEROYDQYWAB | 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 | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "TOKYO"
} | advanced | en | 161 | 161 | cipher_museum | 2.0 | public | null | null |
playfair-v3-0776 | ZRQHBWBFUWREID | ZRQHBWBFUWREID | YANKEE DOODLE | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "COURAGE"
} | intermediate | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-v3-0145 | 62623623023258970266894529165 | 62623623023258970266894529165 | THE TELEGRAPH TRANSMITS | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "LIONSTRACE"
} | advanced | en | 29 | 29 | cipher_museum | 2.0 | public | null | null |
purple-v2-0039 | ALESBIRJSAGBFCKFYBLMRXDD | ALESBIRJSAGBFCKFYBLMRXDD | TORPEDO AWAY ALL HANDS BRACE | purple | purple | machine | {
"type": "seed",
"value": "TOKYO"
} | expert | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
cda-0008017 | YURQW KSUMW HSUZF SCEIH BWCQB WZWIF TVMWN FFDVE ETRYE NMNCK UVFQU RMQRU WGWFW ULWFM VUWKR EGWFN XCVFQ USCXM EVNDC WWGFF QUSCX WLNGW CMW | YURQW KSUMW HSUZF SCEIH BWCQB WZWIF TVMWN FFDVE ETRYE NMNCK UVFQU RMQRU WGWFW ULWFM VUWKR EGWFN XCVFQ USCXM EVNDC WWGFF QUSCX WLNGW CMW | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN A STRONG CLAIM NEEDS STRONG EVIDENCE | monoalphabetic | monoalphabetic | null | {
"alphabet": "VYMGWKXBNPZEDCSTJUFQRLHAIO"
} | hard | en | 113 | 113 | synthetic_educational | null | null | [] | |
diana-117 | UPHPNRJBLQZDLOXOQQYBLQAOYFHFEYYFWTLKYCYDEYJIXXNNQIHUWEWHLCQAYOXOXRJDYTSYVEXDXDPUYDBOYIMLAYCYLZRPLEPPAOZEUTLJOVWTLKCPNHKZYDBQIKUGIOXNECPMAYVEEHMYXOEWSNCQVQA | UPHPNRJBLQZDLOXOQQYBLQAOYFHFEYYFWTLKYCYDEYJIXXNNQIHUWEWHLCQAYOXOXRJDYTSYVEXDXDPUYDBOYIMLAYCYLZRPLEPPAOZEUTLJOVWTLKCPNHKZYDBQIKUGIOXNECPMAYVEEHMYXOEWSNCQVQA | 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 | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | en | 155 | 155 | cipher_museum | 0.2 | public | null | null |
cda-0008252 | ECXUS ODSSD ACIII SXCTG SSTYC CLRNE AEAXE UPLND SYDSH UREIE XEAEN ENLTX TNESR INHRH XHEAE BSTTC OIETX UYHLD ETEUU XCAFU EXOOV CDLEB NMBIB IFRX | ECXUS ODSSD ACIII SXCTG SSTYC CLRNE AEAXE UPLND SYDSH UREIE XEAEN ENLTX TNESR INHRH XHEAE BSTTC OIETX UYHLD ETEUU XCAFU EXOOV CDLEB NMBIB IFRX | THE INDEX OF COINCIDENCE IS A USEFUL CLUE SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY ATBASH ENCODES BY REVERSING THE ALPHABET | double_transposition | double_transposition | null | {
"key1": "SECURE",
"key2": "FREEDOM"
} | hard | en | 119 | 119 | synthetic_educational | null | null | [] | |
adfgx-078 | DGAXAADAGAGADXGAGFXGDADDDDXGAXDDGDDG | DGAXAADAGAGADXGAGFXGDADDDDXGAXDDGDDG | AWAIT FURTHER ORDERS | adfgx | adfgx | fractionation | {
"polybius": "CIPHER",
"columnar": "MUSEUM"
} | advanced | en | 36 | 36 | cipher_museum | 0.2 | public | null | null |
cda-0020176 | ┐· L L ┌· ┌· L K· Γ· L ⌒ ⌐ ─ Γ ┌· L ┐· ┌· ┘· Γ X· r Γ· ¬ Γ· └ Γ· K ⌒· ┌ ⌐ K K L ┌· Γ· ─ ┌· L X L ⌐ ┌· r r· K r· L K ┌· Γ· K r· L ┌ Γ· X· X r Γ· ┐· r· L ┌· ⌐ Γ K· ⌐ ─ r L X K r· L ⌐ └ ┐· r· ⌐ ¬ L K ¬ ⌒· ┘· ─ L ┐· ┘· X Γ· K Γ· ┘· ─ L ⌐ r r· └ L K K L ┌· K r· L ┌· ⌐ Γ· └ ⌐· L ─ r L r Γ· ┐· r· L ┌· ⌒ ┌· Γ· K L X K L ⌣ K Γ·... | ┐· L L ┌· ┌· L K· Γ· L ⌒ ⌐ ─ Γ ┌· L ┐· ┌· ┘· Γ X· r Γ· ¬ Γ· └ Γ· K ⌒· ┌ ⌐ K K L ┌· Γ· ─ ┌· L X L ⌐ ┌· r r· K r· L K ┌· Γ· K r· L ┌ Γ· X· X r Γ· ┐· r· L ┌· ⌐ Γ K· ⌐ ─ r L X K r· L ⌐ └ ┐· r· ⌐ ¬ L K ¬ ⌒· ┘· ─ L ┐· ┘· X Γ· K Γ· ┘· ─ L ⌐ r r· └ L K K L ┌· K r· L ┌· ⌐ Γ· └ ⌐· L ─ r L r Γ· ┐· r· L ┌· ⌒ ┌· Γ· K L X K L ⌣ K Γ·... | PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS | 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. |
cda-0014855 | CFPRWWBQGFKCUAREGADAVYSXDAEXNALSSTWCCQHXNNYKTBQCVQHZXZQRGVANWLIDMNUGNLESSULMSCXAMFHDJZADNVQXMDAIROXAXTNXAWBQDOMXARJTXOINTWFYOHGTYKHRCXRJTQMTABFWAOANSVTEQZYH | CFPRWWBQGFKCUAREGADAVYSXDAEXNALSSTWCCQHXNNYKTBQCVQHZXZQRGVANWLIDMNUGNLESSULMSCXAMFHDJZADNVQXMDAIROXAXTNXAWBQDOMXARJTXOINTWFYOHGTYKHRCXRJTQMTABFWAOANSVTEQZYH | THE MESSAGE WAS HIDDEN BUT NOT SECURE INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION ATBASH ENCODES BY REVERSING THE ALPHABET THE BEST LESSONS SHOW WHERE THE METHOD FAILS | one_time_pad | one_time_pad | null | {} | hard | en | 156 | 156 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
chinese-telegraph-112 | 1953 2271 2836 1887 1700 1489 1700 1823 1953 2271 2271 1953 2271 1823 3087 1427 2761 2836 1887 1700 3087 2333 2670 1634 1427 2271 1634 2836 1887 1700 3087 2333 2670 1634 3087 1427 2761 3087 1953 2836 1887 1823 2333 1634 1427 2271 1634 1762 2918 2144 2144 2333 1762 1823 2670 1427 1571 1700 | 1953 2271 2836 1887 1700 1489 1700 1823 1953 2271 2271 1953 2271 1823 3087 1427 2761 2836 1887 1700 3087 2333 2670 1634 1427 2271 1634 2836 1887 1700 3087 2333 2670 1634 3087 1427 2761 3087 1953 2836 1887 1823 2333 1634 1427 2271 1634 1762 2918 2144 2144 2333 1762 1823 2670 1427 1571 1700 | IN THE BEGINNING WAS THE WORD AND THE WORD WAS WITH GOD AND FULL OF GRACE | chinese_telegraph | chinese_telegraph | codebook | {
"type": "additive",
"value": "31415"
} | expert | en | 232 | 289 | cipher_museum | 0.2 | public | null | null |
rail-fence-v2-0703 | TDERHAITPAIEESSAFNSHGETYDEAENARECGTOTEERNTDIVDEIIEMUTTNTEOOTGRGYFESAESGTT | TDERHAITPAIEESSAFNSHGETYDEAENARECGTOTEERNTDIVDEIIEMUTTNTEOOTGRGYFESAESGTT | THE SECRET OF GETTING AHEAD IS GETTING STARTED ONE STEP AT A TIME GETS YOU VERY FAR INDEED | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 12
} | intermediate | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
jn25-v2-0311 | 21257 21239 21243 21232 21235 21246 21246 21230 21233 21231 21232 21244 21249 21248 21244 21232 21239 21236 21239 21235 21237 21232 21239 21243 21235 21248 21238 21257 21239 21243 21232 21235 21246 21246 21230 21233 21231 21232 21244 21249 21248 21244 21232 21239 21246 21235 21248 21238 21233 21248 21231 21231 21242 21... | 21257 21239 21243 21232 21235 21246 21246 21230 21233 21231 21232 21244 21249 21248 21244 21232 21239 21236 21239 21235 21237 21232 21239 21243 21235 21248 21238 21257 21239 21243 21232 21235 21246 21246 21230 21233 21231 21232 21244 21249 21248 21244 21232 21239 21246 21235 21248 21238 21233 21248 21231 21231 21242 21... | WE SHALL FIGHT ON THE BEACHES AND WE SHALL FIGHT ON THE LANDING GROUNDS AND IN THE FIELDS | jn25 | jn25 | codebook | {
"type": "additive",
"value": "11235"
} | expert | en | 360 | 431 | cipher_museum | 2.0 | public | null | null |
adfgvx-v2-0150 | AADGFDFGGAAAAFAXGVAGAGDGADDXDFAV | AADGFDFGGAAAAFAXGVAGAGDGADDXDFAV | THE WALLS HAVE EARS | adfgvx | adfgvx | fractionation | {
"polybius": "LIBERTY",
"columnar": "FREEDOM"
} | advanced | en | 32 | 32 | cipher_museum | 2.0 | public | null | null |
bifid-v2-0009 | RACFSQPCUZDEBNOD | RACFSQPCUZDEBNOD | THE HARBOR IS CLEAR | bifid | bifid | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
cda-0012776 | IWOGO XZXZZ UNBNY MXTIV WZNVV WMUCR ZJMZD OETUE FBKZT CSRHQ IUSMM ETRJW VSXYR BPCRY TKFJT ZJAFX SZOOL GBCLF | IWOGO XZXZZ UNBNY MXTIV WZNVV WMUCR ZJMZD OETUE FBKZT CSRHQ IUSMM ETRJW VSXYR BPCRY TKFJT ZJAFX SZOOL GBCLF | PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER | one_time_pad | one_time_pad | null | {} | hard | en | 90 | 90 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
alberti-disk-v2-0886 | VFXECUNLKFOQLZ | VFXECUNLKFOQLZ | STORM THE BREACH | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 17
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
scytale-v2-0329 | SNETTSILKLUEEIHOTYTIPSNORNROHNPHCNELERRELAUSEYSBOSYVTFDAURUXLEROAWPEGXIBARYAPAHX | SNETTSILKLUEEIHOTYTIPSNORNROHNPHCNELERRELAUSEYSBOSYVTFDAURUXLEROAWPEGXIBARYAPAHX | SUPPLY LINES HAVE BEEN CUT RATIONS FOR THREE DAYS ONLY AWAIT RESUPPLY OR BREAK THROUGH LINES | scytale | scytale | transposition | {
"type": "integer",
"value": 10
} | intermediate | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
chaocipher-v2-0466 | PJPGOLFNUMIPTNOTVMVPNGTKDAWMKYJEJUTNGFEQWXTKEJPTIXDQBFEDWVWBEFJFKJGPKZDQGLMNIZN | PJPGOLFNUMIPTNOTVMVPNGTKDAWMKYJEJUTNGFEQWXTKEJPTIXDQBFEDWVWBEFJFKJGPKZDQGLMNIZN | CLAUDE SHANNON PROVED THAT THE ONE TIME PAD ACHIEVES PERFECT SECRECY WHEN USED CORRECTLY ONCE | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
cda-0018434 | GRONX FELDX SESAD IGITS EQUEN CEASX HEREP EATIZ GKEYF RIEDZ ANEST IMATE DKEYL ENGTX FROMS TATIZ TICST HEFOU RSQUX RECIP HERUS ESTWO KEYWO RDPOZ YBIUX SQUAR ESTHE LIBRA RYPRE SERVX SKNOW LEDGZ FORTH ECOMZ UNITY | GRONX FELDX SESAD IGITS EQUEN CEASX HEREP EATIZ GKEYF RIEDZ ANEST IMATE DKEYL ENGTX FROMS TATIZ TICST HEFOU RSQUX RECIP HERUS ESTWO KEYWO RDPOZ YBIUX SQUAR ESTHE LIBRA RYPRE SERVX SKNOW LEDGZ FORTH ECOMZ UNITY | GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | commercial_code | commercial_code | null | {} | hard | en | 175 | 175 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
cda-0016454 | ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a31⟩ ⟨w32⟩ ⟨w26⟩ ⟨w20⟩ ⟨a07⟩ ⟨w20⟩ ⟨a19⟩ ⟨w20⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w28⟩ ⟨w22⟩ ⟨w20⟩ ⟨w22⟩ ⟨w08⟩ ⟨a19⟩ ⟨w20⟩ ⟨a13⟩ ⟨w20⟩ ⟨w08⟩ ⟨a25⟩ ⟨w32⟩ ⟨a07⟩ ⟨w26⟩ ⟨w38⟩ ⟨w20⟩ ⟨w40⟩ ⟨w34⟩ ⟨w10⟩ ⟨a19⟩ ⟨a17⟩ ⟨a13⟩ ⟨w08⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a19⟩ ⟨a07⟩ ⟨w34⟩ ⟨w10⟩ ⟨a19⟩ ⟨a17⟩ ⟨w22⟩ ⟨a29⟩ ⟨w20⟩ ⟨a01⟩ ⟨a... | ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a31⟩ ⟨w32⟩ ⟨w26⟩ ⟨w20⟩ ⟨a07⟩ ⟨w20⟩ ⟨a19⟩ ⟨w20⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w28⟩ ⟨w22⟩ ⟨w20⟩ ⟨w22⟩ ⟨w08⟩ ⟨a19⟩ ⟨w20⟩ ⟨a13⟩ ⟨w20⟩ ⟨w08⟩ ⟨a25⟩ ⟨w32⟩ ⟨a07⟩ ⟨w26⟩ ⟨w38⟩ ⟨w20⟩ ⟨w40⟩ ⟨w34⟩ ⟨w10⟩ ⟨a19⟩ ⟨a17⟩ ⟨a13⟩ ⟨w08⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a19⟩ ⟨a07⟩ ⟨w34⟩ ⟨w10⟩ ⟨a19⟩ ⟨a17⟩ ⟨w22⟩ ⟨a29⟩ ⟨w20⟩ ⟨a01⟩ ⟨a... | THE VIGENERE CIPHER USES A REPEATING KEYWORD PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | babington | babington | null | {} | hard | en | 193 | 193 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
cda-0013872 | 01580 05744 5743 4746 05751 0996 4772 5657 5726 1588 01009 06364 02865 4777 04456 00350 4475 01267 1332 1664 06297 1632 1004 6303 02879 4793 4451 0331 05745 01576 01892 06600 04487 1351 0362 04143 01618 4455 06361 00396 03824 6328 4725 06059 01621 1033 06685 05677 1654 06058 07949 06009 6344 01605 4123 6053 2266 4780 4... | 01580 05744 5743 4746 05751 0996 4772 5657 5726 1588 01009 06364 02865 4777 04456 00350 4475 01267 1332 1664 06297 1632 1004 6303 02879 4793 4451 0331 05745 01576 01892 06600 04487 1351 0362 04143 01618 4455 06361 00396 03824 6328 4725 06059 01621 1033 06685 05677 1654 06058 07949 06009 6344 01605 4123 6053 2266 4780 4... | ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS ATBASH ENCODES BY REVERSING THE ALPHABET CAREFULLY | zimmermann | zimmermann | null | {} | hard | en | 138 | 138 | synthetic_educational | null | null | [
"codebook_frequency",
"number_group_analysis"
] | Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher. |
slidex-v3-0225 | MMTMXJVCQXRXQWIBSLWV | MMTMXJVCQXRXQWIBSLWV | THE KING DEMANDS FEALTY | slidex | slidex | transposition | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
rail-fence-202 | ATRWRHESAUEDIFRRTO | ATRWRHESAUEDIFRRTO | AWAIT FURTHER ORDERS | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 5
} | intermediate | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
culper-ring-v3-0031 | 998 818 814 813 818 999 101 311 998 800 818 818 804 812 801 811 804 999 | 998 818 814 813 818 999 101 311 998 800 818 818 804 812 801 811 804 999 | SONS OF LIBERTY ASSEMBLE | culper_ring | culper_ring | codebook | {
"type": "none",
"value": null
} | expert | en | 54 | 71 | cipher_museum | 2.0 | public | null | null |
two-square-103 | HCVRSNGTVCOTHYQMBMHNFALGVRURENEMYYQMMAPGGTTFEAFOHEDMQSNQ | HCVRSNGTVCOTHYQMBMHNFALGVRURENEMYYQMMAPGGTTFEAFOHEDMQSNQ | IF YOU KNOW BOTH YOURSELF AND YOUR ENEMY YOU NEED NOT FEAR THE RESULT | two_square | two_square | polygraphic | {
"key1": "CIPHER",
"key2": "MUSEUM"
} | advanced | en | 56 | 56 | cipher_museum | 0.2 | public | null | null |
cda-0019748 | 859 823 812 999 832 801 854 824 855 830 826 999 813 870 802 836 825 839 802 858 826 843 839 999 816 825 839 811 855 999 851 812 846 813 801 858 813 810 999 859 852 826 818 852 802 836 854 999 825 839 999 806 826 845 822 814 851 858 812 871 858 999 800 840 999 802 815 815 825 839 814 999 807 825 845 823 812 852 999 801 ... | 859 823 812 999 832 801 854 824 855 830 826 999 813 870 802 836 825 839 802 858 826 843 839 999 816 825 839 811 855 999 851 812 846 813 801 858 813 810 999 859 852 826 818 852 802 836 854 999 825 839 999 806 826 845 822 814 851 858 812 871 858 999 800 840 999 802 815 815 825 839 814 999 807 825 845 823 812 852 999 801 ... | THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN | culper_ring | culper_ring | null | {} | hard | en | 152 | 152 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
kryptos-065 | AUYXWDFIUDFXYVN | AUYXWDFIUDFXYVN | THE COAST IS CLEAR | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "PALIMPSEST"
} | advanced | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
jn25-073 | 37186 37195 37186 37194 37106 37187 37196 37199 37184 37186 37190 37195 37186 37182 37199 | 37186 37195 37186 37194 37106 37187 37196 37199 37184 37186 37190 37195 37186 37182 37199 | ENEMY FORCES NEAR | jn25 | jn25 | codebook | {
"type": "additive",
"value": "27182"
} | expert | en | 75 | 89 | cipher_museum | 0.2 | public | null | null |
trithemius-v3-0086 | AMN SIWYVVB LZDA CG DRLNLVHFXDD JP WLJ AUQCOO EGOIUJ SKY XEQGYEOU VYGPLKC DZ QDIPB GJHNZYQGNN | AMN SIWYVVB LZDA CG DRLNLVHFXDD JP WLJ AUQCOO EGOIUJ SKY XEQGYEOU VYGPLKC DZ QDIPB GJHNZYQGNN | ALL PERSONS BORN OR NATURALIZED IN THE UNITED STATES ARE CITIZENS SUBJECT TO EQUAL PROTECTION | trithemius | trithemius | polyalphabetic | {
"type": "none",
"value": null
} | beginner | en | 79 | 93 | cipher_museum | 2.0 | public | null | null |
cda-0017661 | 20 18 1 14 19 16 15 19 9 20 9 15 14 3 9 16 8 5 18 19 18 5 1 18 18 1 14 7 5 12 5 20 20 5 18 19 23 9 20 8 15 21 20 19 21 2 19 20 9 20 21 20 9 15 14 | 20 18 1 14 19 16 15 19 9 20 9 15 14 3 9 16 8 5 18 19 18 5 1 18 18 1 14 7 5 12 5 20 20 5 18 19 23 9 20 8 15 21 20 19 21 2 19 20 9 20 21 20 9 15 14 | TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION | aeneas_tacticus | aeneas_tacticus | null | {} | medium | en | 55 | 55 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
scytale-v2-0009 | TEABRSLAHHROICER | TEABRSLAHHROICER | THE HARBOR IS CLEAR | scytale | scytale | transposition | {
"type": "integer",
"value": 8
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
adfgvx-v2-0300 | VGVGDDGFAAXGXAAFDADAVDFDVDXAFFFVDFAAAFFXFDFXDDDAAAFDGFFDDDAGVAXDAAFAVAAAXDDGDFAAFDDDVFFDDDXGVGXAXVDDDDFDDXAXVDDFAFDADDAGADXAFGVDVAAFXDFD | VGVGDDGFAAXGXAAFDADAVDFDVDXAFFFVDFAAAFFXFDFXDDDAAAFDGFFDDDAGVAXDAAFAVAAAXDDGDFAAFDDDVFFDDDXGVGXAXVDDDDFDDXAXVDDFAFDADDAGADXAFGVDVAAFXDFD | ALL THE WORLDS A STAGE AND EACH MAN IN HIS TIME PLAYS MANY PARTS ON LIFES GREAT STAGE | adfgvx | adfgvx | fractionation | {
"polybius": "TRIUMPH",
"columnar": "JUSTICE"
} | advanced | en | 136 | 136 | cipher_museum | 2.0 | public | null | null |
solitaire-v3-0276 | OUELUJUHBOZYBWBAYTOFKQWGVUNUPHWHCRMZFJURZOKGALHAYUHVTOSTGAHSTLDOGHPGALBUALC | OUELUJUHBOZYBWBAYTOFKQWGVUNUPHWHCRMZFJURZOKGALHAYUHVTOSTGAHSTLDOGHPGALBUALC | THE SPEED OF LIGHT IS THE ULTIMATE SPEED LIMIT IN THE UNIVERSE EINSTEIN DEMONSTRATED THIS | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "PONTIFEX"
} | expert | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
cda-0021682 | 818 844 844 809 999 812 811 861 807 801 857 826 842 839 800 835 999 857 844 843 835 856 999 813 870 847 835 802 824 840 999 859 821 814 825 852 999 833 824 837 824 858 856 999 857 822 814 999 857 851 826 858 823 814 837 824 860 855 999 807 824 847 823 813 853 999 802 810 864 800 840 807 814 855 999 858 823 812 999 801 ... | 818 844 844 809 999 812 811 861 807 801 857 826 842 839 800 835 999 857 844 843 835 856 999 813 870 847 835 802 824 840 999 859 821 814 825 852 999 833 824 837 824 858 856 999 857 822 814 999 857 851 826 858 823 814 837 824 860 855 999 807 824 847 823 813 853 999 802 810 864 800 840 807 814 855 999 858 823 812 999 801 ... | GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER PERHAPS | culper_ring | culper_ring | null | {} | hard | en | 106 | 106 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
one-time-pad-v2-0191 | JDISTZCVUIOFSQUACYLRPCNTVZQPIHNCYVSAIRDGKAQGLRRPXPIQHAHSRDLIBRIKZFRZRXRGXODOGUCA | JDISTZCVUIOFSQUACYLRPCNTVZQPIHNCYVSAIRDGKAQGLRRPXPIQHAHSRDLIBRIKZFRZRXRGXODOGUCA | THE BABINGTON PLOT TO ASSASSINATE QUEEN ELIZABETH WAS UNCOVERED BY FRANCIS WALSINGHAM IN TIME | one_time_pad | one_time_pad | stream | {
"type": "pad",
"value": "QWERTY (repeating)"
} | expert | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
cda-0005003 | EEBIAGNOKRUHILSRLCRTEEUWISEPUTEDACXFRACLTTPHBEAGTDECKVELSDNRINCLIPINCREFRTORYLOERHFCSRERAALGASTFCNUSUASTNCTGIYRAPOSYHEURNPEDELAISRLNIPEEBR | EEBIAGNOKRUHILSRLCRTEEUWISEPUTEDACXFRACLTTPHBEAGTDECKVELSDNRINCLIPINCREFRTORYLOERHFCSRERAALGASTFCNUSUASTNCTGIYRAPOSYHEURNPEDELAISRLNIPEEBR | CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN | double_transposition | double_transposition | null | {
"key1": "SECURE",
"key2": "SIGNAL"
} | hard | en | 138 | 138 | synthetic_educational | null | null | [
"key_length_search",
"anagram_recovery"
] | Double columnar transposition: apply columnar twice for stronger security. |
cda-0013216 | JRZTHJLMHINMXDBDBBXFGMXKMSPPTWVLRGRDKBTWWLATFZYYAIJEIEDIBIANIORIZGLUQIJZHDLKQWPGRKGNBYKADOTXMUXEXUGCUUWFAUIRIJDKLEWQMHTMDOEYKVWLFPTZPDRPYZWPUOSEAEUL | JRZTHJLMHINMXDBDBBXFGMXKMSPPTWVLRGRDKBTWWLATFZYYAIJEIEDIBIANIORIZGLUQIJZHDLKQWPGRKGNBYKADOTXMUXEXUGCUUWFAUIRIJDKLEWQMHTMDOEYKVWLFPTZPDRPYZWPUOSEAEUL | HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION EVERY SYSTEM NEEDS AN HONEST THREAT MODEL CERTAINLY | one_time_pad | one_time_pad | null | {} | hard | en | 148 | 148 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
wheatstone-v3-0173 | DLRWFKMOSARVADTELTSPANFASAVMIVATERMUCEKLTURLISAIANTFMKMVARVLSTSPLKSMBCAMIMCFNTFJA | DLRWFKMOSARVADTELTSPANFASAVMIVATERMUCEKLTURLISAIANTFMKMVARVLSTSPLKSMBCAMIMCFNTFJA | DARWIN OBSERVED THAT SPECIES EVOLVE THROUGH NATURAL SELECTION OVER VAST SPANS OF GEOLOGIC TIME | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "LONDON"
} | advanced | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v2-0749 | OPGRATNFXTWHMJZJKUGWIIATUSGOBNOGGQZZNJGDOFYEZCWUOOIIDGFMEYVFMRTYBJYKFQYUWZGKCUBVSAWTONFLPYTAVOEEYMONMFLQBWLTIQPQWOWZVCMTOJBJRZDMPDUSSGZVVCVQTNYGNNQEFEUDKOPQNLPLVBZINSLTMVIMMVC | OPGRATNFXTWHMJZJKUGWIIATUSGOBNOGGQZZNJGDOFYEZCWUOOIIDGFMEYVFMRTYBJYKFQYUWZGKCUBVSAWTONFLPYTAVOEEYMONMFLQBWLTIQPQWOWZVCMTOJBJRZDMPDUSSGZVVCVQTNYGNNQEFEUDKOPQNLPLVBZINSLTMVIMMVC | 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 | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "VICKSBURG"
} | intermediate | en | 175 | 175 | cipher_museum | 2.0 | public | null | null |
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