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-0005786 | ENBS BLRR KIRM ENSE ORTH IFRO SETE DELE EERY ENSI CTTW AXIR ECOO MTRX CSRU ENGX EAXP ROIC HDXA EWCI TLGR PPSP UADK HAYA | ENBS BLRR KIRM ENSE ORTH IFRO SETE DELE EERY ENSI CTTW AXIR ECOO MTRX CSRU ENGX EAXP ROIC HDXA EWCI TLGR PPSP UADK HAYA | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN | double_transposition | double_transposition | null | {
"key1": "MUSEUM",
"key2": "SIGNAL"
} | hard | en | 96 | 96 | synthetic_educational | null | null | [
"key_length_search",
"anagram_recovery"
] | Double columnar transposition: apply columnar twice for stronger security. |
lorenz-v2-0170 | GENERALGRANTHASTAKENVICISBURGTHEGREATRIVERISNOWOPENFROOITSSOURCETOTHESEA | GENERALGRANTHASTAKENVICISBURGTHEGREATRIVERISNOWOPENFROOITSSOURCETOTHESEA | GENERAL GRANT HAS TAKEN VICKSBURG THE GREAT RIVER IS NOW OPEN FROM ITS SOURCE TO THE SEA | lorenz | lorenz | machine | {
"type": "seed",
"value": "FISH"
} | expert | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v3-0279 | GYKNKGLQQNPBYMHQGEYPGTEYDQUUYAAPMASDWLYPYNMPGJQAESMLQWLAKEABLWLYQGEYNYWLPUWLYPQYHQWLYB | GYKNKGLQQNPBYMHQGEYPGTEYDQUUYAAPMASDWLYPYNMPGJQAESMLQWLAKEABLWLYQGEYNYWLPUWLYPQYHQWLYB | NEWTON SAW THE APPLE FALL AND INTUITED THE SAME FORCE THAT HOLDS THE PLANETS IN THEIR PATHS | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 86 | 86 | cipher_museum | 2.0 | public | null | null |
four-square-v3-0471 | QDWMGSDLPTCIDDRKLUKHROSHDSCKQTMUKNKHZCQDWMGSDSCXCIIYCSMUFHQDBLSFWARPSHIYCSMUFHQDXSLSFCKUYEQDWHKNCXKEBENRKUQDSTIZGSSSXEBRCBDKGISHDSEUDTCBRUDVQBWHGCDFKQCBLUEUINQY | QDWMGSDLPTCIDDRKLUKHROSHDSCKQTMUKNKHZCQDWMGSDSCXCIIYCSMUFHQDBLSFWARPSHIYCSMUFHQDXSLSFCKUYEQDWHKNCXKEBENRKUQDSTIZGSSSXEBRCBDKGISHDSEUDTCBRUDVQBWHGCDFKQCBLUEUINQY | THE LORD OUR GOD IS ONE LORD AND THOU SHALT LOVE THE LORD THY GOD WITH ALL THINE HEART AND WITH ALL THY SOUL AND WITH ALL THY MIGHT AND THESE WORDS WHICH I COMMAND THEE THIS DAY SHALL BE IN THINE HEART | four_square | four_square | polygraphic | {
"key1": "WISDOM",
"key2": "COURAGE"
} | advanced | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
typex-v2-0042 | KTQBLBZIJUKCUFQPRJWOHTKZQWPKWLJUWGCRDWZQTOBUNBE | KTQBLBZIJUKCUFQPRJWOHTKZQWPKWLJUWGCRDWZQTOBUNBE | THE COURSE OF TRUE LOVE NEVER DID RUN SMOOTH THROUGH AGES | typex | typex | machine | {
"type": "keyword",
"value": "LONDON"
} | expert | en | 47 | 47 | cipher_museum | 2.0 | public | null | null |
morse-code-v3-0059 | - .... . / - .... .. -. / .-. . -.. / .-.. .. -. . / ... - --- --- -.. / ..-. .. .-. -- / .- - / -... .- .-.. .- -.-. .-.. .- ...- .- / .- ... / - .... . / .-. ..- ... ... .. .- -. / -.-. .- ...- .- .-.. .-. -.-- / -.-. .... .- .-. --. . -.. / .- -.-. .-. --- ... ... / - .... . / .--. .-.. .- .. -. | - .... . / - .... .. -. / .-. . -.. / .-.. .. -. . / ... - --- --- -.. / ..-. .. .-. -- / .- - / -... .- .-.. .- -.-. .-.. .- ...- .- / .- ... / - .... . / .-. ..- ... ... .. .- -. / -.-. .- ...- .- .-.. .-. -.-- / -.-. .... .- .-. --. . -.. / .- -.-. .-. --- ... ... / - .... . / .--. .-.. .- .. -. | THE THIN RED LINE STOOD FIRM AT BALACLAVA AS THE RUSSIAN CAVALRY CHARGED ACROSS THE PLAIN | morse_code | morse_code | encoding | {
"type": "none",
"value": null
} | beginner | en | 211 | 299 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-115 | 57356767150657242071202655356202822573567602922542071202165202656744297155267172457269724 | 57356767150657242071202655356202822573567602922542071202165202656744297155267172457269724 | EVERY SECRET HAS A KEEPER AND EVERY CODE HAS A BREAKER WHO SEEKS THE TRUTH | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "CIPHERMUS"
} | advanced | en | 89 | 89 | cipher_museum | 0.2 | public | null | null |
cda-0012232 | BRUTE FORCZ WORKS ONLYZ HENTZ EKEYS PACEZ SSMAL LDIGR APHAN DTRIG RAPHZ REQUE NCIES EXPOS ESIMP LECIP HERSF REQUE NCYAN ALYSI SCANR EVEAL WEAKC IPHER SEAZZ | BRUTE FORCZ WORKS ONLYZ HENTZ EKEYS PACEZ SSMAL LDIGR APHAN DTRIG RAPHZ REQUE NCIES EXPOS ESIMP LECIP HERSF REQUE NCYAN ALYSI SCANR EVEAL WEAKC IPHER SEAZZ | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | commercial_code | commercial_code | null | {} | hard | en | 130 | 130 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
vigenere-v3-1005 | MUJPQPSKMWKDGHCBSMARILCWLMXSUPWMPTSDAZGIVYAUDLMNILNAHVQZNLNTAVWYUFLWHKNIDHOKGCCEX | MUJPQPSKMWKDGHCBSMARILCWLMXSUPWMPTSDAZGIVYAUDLMNILNAHVQZNLNTAVWYUFLWHKNIDHOKGCCEX | DARWIN OBSERVED THAT SPECIES EVOLVE THROUGH NATURAL SELECTION OVER VAST SPANS OF GEOLOGIC TIME | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
double-transposition-198 | RATNNFREDURAIBEG | RATNNFREDURAIBEG | BURN AFTER READING | double_transposition | double_transposition | transposition | {
"key1": "SECRET",
"key2": "AGENTS"
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
diana-v3-0307 | NAPLEZBWQYTKBTNZLLFVYVAYSKUCSKSKORWNBGZPQZJAAJXHXTJPYSSLYVEZJGZZQGEKLURAJGYVLLBOOQWANGDPQNRBNKQWSGLPQBFBPYLLXWRNPBROPVLEVBDGTOCINVEAZUJZAPJKZJABSZKUTENACVGNRXYGQGXDGYRFXO | NAPLEZBWQYTKBTNZLLFVYVAYSKUCSKSKORWNBGZPQZJAAJXHXTJPYSSLYVEZJGZZQGEKLURAJGYVLLBOOQWANGDPQNRBNKQWSGLPQBFBPYLLXWRNPBROPVLEVBDGTOCINVEAZUJZAPJKZJABSZKUTENACVGNRXYGQGXDGYRFXO | 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 | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "FORCES"
} | intermediate | en | 170 | 170 | cipher_museum | 2.0 | public | null | null |
cda-0004562 | RBHP YSFF OAFC BEWG VBAO BDYV SFQA ZHZA NESB QELC GWCA GJVQ S | RBHP YSFF OAFC BEWG VBAO BDYV SFQA ZHZA NESB QELC GWCA GJVQ S | DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE | porta | porta | null | {
"key": "LIBRARY"
} | medium | en | 49 | 49 | synthetic_educational | null | null | [
"kasiski_examination",
"index_of_coincidence"
] | Porta: 13-row table polyalphabetic cipher; reciprocal (encrypt = decrypt). |
slidex-v2-0090 | QUEOENYHSWTYUFMLROWIGJASJQQGNMEDJKTHWGJKXORPBIWSQNOVJQUFJQJFXITSQUFNJKVCJUWR | QUEOENYHSWTYUFMLROWIGJASJQQGNMEDJKTHWGJKXORPBIWSQNOVJQUFJQJFXITSQUFNJKVCJUWR | MARY QUEEN OF SCOTS WAS BEHEADED AFTER HER CIPHER LETTERS WERE DECODED BY THOMAS PHELIPPES | slidex | slidex | transposition | {
"type": "keyword",
"value": "BLETCHLEY"
} | advanced | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
geheimschreiber-v2-0432 | KXWVEIOFFRRQSUKNNZHXFVGTRPEZHKIWNZRQKFGQJQJQJNSYOUYZVDOWBNQLZYHABSXKOOBLWYW | KXWVEIOFFRRQSUKNNZHXFVGTRPEZHKIWNZRQKFGQJQJQJNSYOUYZVDOWBNQLZYHABSXKOOBLWYW | ARMY OF THE POTOMAC CROSSES THE RAPPAHANNOCK TONIGHT ABSOLUTE SILENCE IS IMPERATIVE NOW | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "TEUTON"
} | expert | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
purple-v2-0319 | ZGJCINYRDSUIXJISSXAWHUOZXQECIEWSBXUVWHRXBAHLHZDZJBDXIDCMITNKJMBILHBYWFGZVOV | ZGJCINYRDSUIXJISSXAWHUOZXQECIEWSBXUVWHRXBAHLHZDZJBDXIDCMITNKJMBILHBYWFGZVOV | IN THE BEGINNING GOD CREATED THE HEAVEN AND THE EARTH AND DARKNESS WAS UPON THE FACE OF DEEP | purple | purple | machine | {
"type": "seed",
"value": "SAKURA"
} | expert | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
nomenclator-v3-0200 | 21 12 20 18 01 09 14 20 05 12 12 09 07 05 14 03 05 06 18 15 13 02 12 05 20 03 08 12 05 25 16 01 18 11 07 01 22 05 60 01 12 12 09 05 19 01 14 05 14 15 18 13 15 21 19 01 04 22 01 14 20 01 07 05 64 23 15 18 12 04 23 01 18 20 23 15 02 25 18 05 22 05 01 12 09 14 07 07 05 18 13 01 14 09 14 20 05 14 20 09 15 14 19 02 05 06 15... | 21 12 20 18 01 09 14 20 05 12 12 09 07 05 14 03 05 06 18 15 13 02 12 05 20 03 08 12 05 25 16 01 18 11 07 01 22 05 60 01 12 12 09 05 19 01 14 05 14 15 18 13 15 21 19 01 04 22 01 14 20 01 07 05 64 23 15 18 12 04 23 01 18 20 23 15 02 25 18 05 22 05 01 12 09 14 07 07 05 18 13 01 14 09 14 20 05 14 20 09 15 14 19 02 05 06 15... | ULTRA INTELLIGENCE FROM BLETCHLEY PARK GAVE THE ALLIES AN ENORMOUS ADVANTAGE IN WORLD WAR TWO BY REVEALING GERMAN INTENTIONS BEFORE OPERATIONS BEGAN BUT THE SOURCE HAD TO BE PROTECTED AT ALL COSTS | nomenclator | nomenclator | nomenclator | {
"type": "seed",
"value": "PALACE"
} | expert | en | 318 | 476 | cipher_museum | 2.0 | public | null | null |
typex-v2-0402 | ESVOJPWFQVKNDBLH | ESVOJPWFQVKNDBLH | THE WALLS HAVE EARS | typex | typex | machine | {
"type": "keyword",
"value": "WINSTON"
} | expert | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
cda-0009599 | OUWWU DUHMX TVVAP JTPSA HFEEQ FTIVX FNHZZ XMDBK PHVSF LSM | OUWWU DUHMX TVVAP JTPSA HFEEQ FTIVX FNHZZ XMDBK PHVSF LSM | CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS HONESTLY | autokey | autokey | null | {
"primer": "MUSEUM"
} | medium | en | 48 | 48 | synthetic_educational | null | null | [] | |
fractionated-morse-v3-0218 | RYQYMBRYQYMNBTLWEQ | RYQYMBRYQYMNBTLWEQ | PER ASPERA AD ASTRA | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
argenti-v3-0115 | 28 65 83 16 63 67 41 28 71 56 63 37 72 28 13 26 20 44 63 | 28 65 83 16 63 67 41 28 71 56 63 37 72 28 13 26 20 44 63 | AVE MARIA GRATIA PLENA | argenti | argenti | nomenclator | {
"type": "seed",
"value": "PAPAL"
} | expert | en | 38 | 56 | cipher_museum | 2.0 | public | null | null |
polybius-de-009 | 14 11 43 22 15 23 15 24 32 33 24 43 11 31 31 15 42 32 11 13 23 44 24 43 44 14 11 43 52 24 43 43 15 33 | 14 11 43 22 15 23 15 24 32 33 24 43 11 31 31 15 42 32 11 13 23 44 24 43 44 14 11 43 52 24 43 43 15 33 | DAS GEHEIMNIS ALLER MACHT IST DAS WISSEN | polybius | polybius | substitution | {
"type": "none",
"value": null
} | beginner | de | 68 | 101 | cipher_museum | 0.2 | public | null | null |
m209-v2-0290 | ARZAKFLJATATZNAKWDLBOM | ARZAKFLJATATZNAKWDLBOM | FLEET ASSEMBLES AT HARBOR | m209 | m209 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
four-square-v3-0049 | GSVAQTAQDGGRCMNBPLYGITKUBNLICSHTPMMLFUZAUATRTDGHKFSGDSULLOLBTKSRSGLEGSXY | GSVAQTAQDGGRCMNBPLYGITKUBNLICSHTPMMLFUZAUATRTDGHKFSGDSULLOLBTKSRSGLEGSXY | IT WAS A BRIGHT COLD DAY IN APRIL AND THE CLOCKS WERE STRIKING THIRTEEN ACROSS THE CITY | four_square | four_square | polygraphic | {
"key1": "PALACE",
"key2": "BATTLE"
} | advanced | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v2-0210 | FQCTELMJL THWICSW THUMCD HU X MXQJLYCSU WIHQJ XQM THUMCD THWICSW OCSYXJL HU SEWHDXWLER TCYWIELUU | FQCTELMJL THWICSW THUMCD HU X MXQJLYCSU WIHQJ XQM THUMCD THWICSW OCSYXJL HU SEWHDXWLER TCYWIELUU | KNOWLEDGE WITHOUT WISDOM IS A DANGEROUS THING AND WISDOM WITHOUT COURAGE IS ULTIMATELY WORTHLESS | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "VATSYANA"
} | intermediate | en | 83 | 96 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v3-0209 | WPBWVDKIMLDAPXSNMK | WPBWVDKIMLDAPXSNMK | THE ORACLE HAS SPOKEN | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "DIXIE"
} | intermediate | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-fr-019 | LCNBISATPUVERSEQILAEELNIFERIDBNUUEI | LCNBISATPUVERSEQILAEELNIFERIDBNUUEI | LA FRANCE EST UNE REPUBLIQUE INDIVISIBLE | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | fr | 35 | 35 | cipher_museum | 0.2 | public | null | null |
venona-pad-reuse-v2-0282 | TZWHNCKRRVHR5LBXEXH | TZWHNCKRRVHR5LBXEXH | WISDOM GUARDS THE GATE | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "FREEDOM"
} | expert | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
great-cipher-v2-0247 | 143 149 110 179 108 128 135 105 167 137 135 168 120 166 104 160 171 111 138 176 168 107 156 124 173 112 177 129 177 149 149 144 168 107 169 175 124 173 109 179 135 154 178 170 140 129 100 149 102 176 148 100 166 153 136 128 130 134 175 163 115 177 104 141 102 135 138 142 165 181 162 118 108 110 142 152 177 161 116 128 ... | 143 149 110 179 108 128 135 105 167 137 135 168 120 166 104 160 171 111 138 176 168 107 156 124 173 112 177 129 177 149 149 144 168 107 169 175 124 173 109 179 135 154 178 170 140 129 100 149 102 176 148 100 166 153 136 128 130 134 175 163 115 177 104 141 102 135 138 142 165 181 162 118 108 110 142 152 177 161 116 128 ... | AFTER AN UNEQUIVOCAL EXPERIENCE OF THE INEFFICIENCY OF THE SUBSISTING FEDERAL GOVERNMENT YOU ARE CALLED UPON TO DELIBERATE ON A NEW CONSTITUTION FOR THE UNITED STATES OF AMERICA | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "ROSSIGNOL"
} | expert | en | 312 | 415 | cipher_museum | 2.0 | public | null | null |
copiale-v3-0281 | I0 M1 V3 C7 H3 E3 E1 F9 Y0 V3 A6 W6 U2 U6 V4 U2 A5 N6 N2 G3 A6 I4 U8 O9 O4 W6 D3 M1 G1 D0 M8 W4 D8 V7 A3 O7 T4 I4 Q5 D8 F7 J3 H9 W4 F7 W5 X4 H9 U9 V3 Z2 V4 D6 M4 R7 G0 P6 A5 E3 Y0 T2 C7 W4 F7 A2 M1 I0 V4 M4 D6 J4 J4 V3 A7 B8 O2 I5 O4 | I0 M1 V3 C7 H3 E3 E1 F9 Y0 V3 A6 W6 U2 U6 V4 U2 A5 N6 N2 G3 A6 I4 U8 O9 O4 W6 D3 M1 G1 D0 M8 W4 D8 V7 A3 O7 T4 I4 Q5 D8 F7 J3 H9 W4 F7 W5 X4 H9 U9 V3 Z2 V4 D6 M4 R7 G0 P6 A5 E3 Y0 T2 C7 W4 F7 A2 M1 I0 V4 M4 D6 J4 J4 V3 A7 B8 O2 I5 O4 | BLESSED ARE THE MEEK FOR THEY SHALL INHERIT THE EARTH AND THE PEACEMAKERS SHALL BE CALLED SONS | copiale | copiale | substitution | {
"type": "keyword",
"value": "MYSTERY"
} | advanced | en | 156 | 233 | cipher_museum | 2.0 | public | null | null |
cda-0020203 | . .... .. .... .. .. .... .. . . ... ..... .. ... . . ... ... . .... .... .... .... .. .. .... .. .. .... .. . . ... ..... .. ... .. . .... .. . ..... .... . .... ..... . ..... ... ... . ... .. .... . ..... .... ... . ..... ..... ... ... ..... ... .... .... ... . ..... .... ... .. ..... | . .... .. .... .. .. .... .. . . ... ..... .. ... . . ... ... . .... .... .... .... .. .. .... .. .. .... .. . . ... ..... .. ... .. . .... .. . ..... .... . .... ..... . ..... ... ... . ... .. .... . ..... .... ... . ..... ..... ... ... ..... ... .... .... ... . ..... .... ... .. ..... | DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS | tap_code | tap_code | null | {} | medium | en | 48 | 48 | 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. |
kryptos-166 | NGRDUIEBMIZNULYMKDLJJFGQFGRDRGDUMCFLJERQUFMHJDQEUWFYVDUFK | NGRDUIEBMIZNULYMKDLJJFGQFGRDRGDUMCFLJERQUFMHJDQEUWFYVDUFK | FOUR SCORE AND SEVEN YEARS AGO OUR FATHERS BROUGHT FORTH THIS NATION | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "ABSCISSA"
} | advanced | en | 57 | 57 | cipher_museum | 0.2 | public | null | null |
four-square-v2-0562 | QDSAELEUROBSAZSNBLZCKQDADWLCHLWORSBSNRWHOORPMRTOFUBSNUHUWAQOCBTRDQSHIDTODNEQFOKBRQ | QDSAELEUROBSAZSNBLZCKQDADWLCHLWORSBSNRWHOORPMRTOFUBSNUHUWAQOCBTRDQSHIDTODNEQFOKBRQ | THE CIPHER DISK WAS INVENTED BY LEON BATTISTA ALBERTI A RENAISSANCE ARCHITECT AND GREAT HUMANIST | four_square | four_square | polygraphic | {
"key1": "WISDOM",
"key2": "COURAGE"
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
trifid-v3-0349 | UQFBZHHFHGCBFPNRTTG | UQFBZHHFHGCBFPNRTTG | THE TELESCOPE REVEALS | trifid | trifid | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
cda-0015367 | ⟨a13⟩ ⟨w20⟩ ⟨w20⟩ ⟨a19⟩ ⟨a19⟩ ⟨w20⟩ ⟨a31⟩ ⟨w32⟩ ⟨w20⟩ ⟨w34⟩ ⟨w08⟩ ⟨a07⟩ ⟨a17⟩ ⟨a19⟩ ⟨w20⟩ ⟨a13⟩ ⟨a19⟩ ⟨w10⟩ ⟨a17⟩ ⟨w28⟩ ⟨w14⟩ ⟨w32⟩ ⟨a11⟩ ⟨w32⟩ ⟨a01⟩ ⟨w32⟩ ⟨a25⟩ ⟨w40⟩ ⟨w04⟩ ⟨w08⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a19⟩ ⟨w32⟩ ⟨a07⟩ ⟨a19⟩ ⟨w20⟩ ⟨w22⟩ ⟨w20⟩ ⟨w08⟩ ⟨a19⟩ ⟨w14⟩ ⟨a29⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a25⟩ ⟨a19⟩ ⟨w32⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w... | ⟨a13⟩ ⟨w20⟩ ⟨w20⟩ ⟨a19⟩ ⟨a19⟩ ⟨w20⟩ ⟨a31⟩ ⟨w32⟩ ⟨w20⟩ ⟨w34⟩ ⟨w08⟩ ⟨a07⟩ ⟨a17⟩ ⟨a19⟩ ⟨w20⟩ ⟨a13⟩ ⟨a19⟩ ⟨w10⟩ ⟨a17⟩ ⟨w28⟩ ⟨w14⟩ ⟨w32⟩ ⟨a11⟩ ⟨w32⟩ ⟨a01⟩ ⟨w32⟩ ⟨a25⟩ ⟨w40⟩ ⟨w04⟩ ⟨w08⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a19⟩ ⟨w32⟩ ⟨a07⟩ ⟨a19⟩ ⟨w20⟩ ⟨w22⟩ ⟨w20⟩ ⟨w08⟩ ⟨a19⟩ ⟨w14⟩ ⟨a29⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a25⟩ ⟨a19⟩ ⟨w32⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w... | PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER SLOWLY | babington | babington | null | {} | hard | en | 111 | 111 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
vic-v2-0217 | 9083468476898968085888368988424192480859188848589909188824090801898669028348960806936190891089908891290185089818885845850808508387 | 9083468476898968085888368988424192480859188848589909188824090801898669028348960806936190891089908891290185089818885845850808508387 | THE AMBASSADOR HAS RECEIVED OUR MOST URGENT DISPATCHES AND AWAITS INSTRUCTIONS FROM LONDON HQ | vic | vic | substitution | {
"type": "keyword",
"value": "NICKEL"
} | advanced | en | 130 | 130 | cipher_museum | 2.0 | public | null | null |
gronsfeld-v3-0504 | FMLNIGETLHGPRUAPMTDEPXKLPWFRQCMIEKRATZWGTEVPYKRTQNGXKMNUIBMNVCYQXELGVGKRMMVGVEBHKRM | FMLNIGETLHGPRUAPMTDEPXKLPWFRQCMIEKRATZWGTEVPYKRTQNGXKMNUIBMNVCYQXELGVGKRMMVGVEBHKRM | DIFFIE AND HELLMAN INVENTED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX CHANGING EVERYTHING | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "24680"
} | intermediate | en | 83 | 83 | cipher_museum | 2.0 | public | null | null |
m209-v3-0352 | YJMWRE | YJMWRE | EUREKA | m209 | m209 | machine | {
"type": "seed",
"value": "VICTORY"
} | expert | en | 6 | 6 | cipher_museum | 2.0 | public | null | null |
scytale-v3-0316 | TEEINSADEDXHLGOSTNRAYX | TEEINSADEDXHLGOSTNRAYX | THE LEGIONS STAND READY | scytale | scytale | transposition | {
"type": "integer",
"value": 11
} | intermediate | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
cda-0009271 | TTRGWBNECIBRISEISEAENUAORLTTNSRATNNEEHITUTDISCATOTRRAIOPIRTUUOEISNOPRETTPSNTXSHARSIYUTRXIENSUOMNYIX | TTRGWBNECIBRISEISEAENUAORLTTNSRATNNEEHITUTDISCATOTRRAIOPIRTUUOEISNOPRETTPSNTXSHARSIYUTRXIENSUOMNYIX | TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | scytale | scytale | null | {
"cols": 9
} | hard | en | 99 | 99 | synthetic_educational | null | null | [] | |
two-square-v2-0048 | ALLTHEZKTAGQCQRLHLCKHAPDFOCKINBOSTIMPULAYSKTNYPASAUMNLMCCUFSEATSRLHL | ALLTHEZKTAGQCQRLHLCKHAPDFOCKINBOSTIMPULAYSKTNYPASAUMNLMCCUFSEATSRLHL | ALL THE WORLDS A STAGE AND EACH MAN IN HIS TIME PLAYS MANY PARTS ON LIFES GREAT STAGE | two_square | two_square | polygraphic | {
"key1": "PALACE",
"key2": "BATTLE"
} | advanced | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
argenti-148 | 78 89 21 50 74 79 11 82 28 64 78 88 21 61 82 | 78 89 21 50 74 79 11 82 28 64 78 88 21 61 82 | EVACUATE THE BASE | argenti | argenti | nomenclator | {
"type": "seed",
"value": "SECRET"
} | expert | en | 30 | 44 | cipher_museum | 0.2 | public | null | null |
bacon-cipher-v2-0027 | AABBB ABBAB ABBAA ABBAB BAAAA AAAAA AAAAB ABBAB BABAA AABAA AAAAA ABABA ABABA | AABBB ABBAB ABBAA ABBAB BAAAA AAAAA AAAAB ABBAB BABAA AABAA AAAAA ABABA ABABA | HONOR ABOVE ALL | bacon_cipher | bacon_cipher | steganography | {
"type": "none",
"value": null
} | beginner | en | 65 | 77 | cipher_museum | 2.0 | public | null | null |
cda-0021622 | KIQI GYAA IKMQ YAMI GUIW WIAM MOKI CYKM AMQK MQEK YYMJ UUEQ QSGB QSMY VOWR SIVT WLCF TOGB NVQV XVEW YFMW WUMN XWDM KLXR JDLR SINX VONK SOLN RXAZ HCNV RRSI PUSH WWAI DDXV | KIQI GYAA IKMQ YAMI GUIW WIAM MOKI CYKM AMQK MQEK YYMJ UUEQ QSGB QSMY VOWR SIVT WLCF TOGB NVQV XVEW YFMW WUMN XWDM KLXR JDLR SINX VONK SOLN RXAZ HCNV RRSI PUSH WWAI DDXV | FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH THE ARCHITECTURE SHOULD MAKE MISUSE HARDER | running_key | running_key | null | {} | hard | en | 136 | 136 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
bacon-cipher-v2-0029 | ABBBA AAAAA BAABA ABAAA AABAA ABBAA AAABA AABAA AAAAB BAAAA ABAAA ABBAA AABBA BAAAB BABAA ABAAA AAABA BAABA ABBAB BAAAA BABBB | ABBBA AAAAA BAABA ABAAA AABAA ABBAA AAABA AABAA AAAAB BAAAA ABAAA ABBAA AABBA BAAAB BABAA ABAAA AAABA BAABA ABBAB BAAAA BABBB | PATIENCE BRINGS VICTORY | bacon_cipher | bacon_cipher | steganography | {
"type": "none",
"value": null
} | beginner | en | 105 | 125 | cipher_museum | 2.0 | public | null | null |
cda-0009081 | CLTMC TKXOE RNELS ETBPE LEROL CEOUT AANPI CXCIR CEETO NINAI ADRES MFEGI TAFNA WNOWD FXSPC EIRII IARPA NYSNR SOIEI XSHHR TSSNN TAHMC PBAOO LNNCX IEWNY TKADE MEOLA ULNUS DTAXC RHSMH ITSDS RDATT SGRAE VTXAS YEAEE IRTIT ESTIO OCLPE IX | CLTMC TKXOE RNELS ETBPE LEROL CEOUT AANPI CXCIR CEETO NINAI ADRES MFEGI TAFNA WNOWD FXSPC EIRII IARPA NYSNR SOIEI XSHHR TSSNN TAHMC PBAOO LNNCX IEWNY TKADE MEOLA ULNUS DTAXC RHSMH ITSDS RDATT SGRAE VTXAS YEAEE IRTIT ESTIO OCLPE IX | CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION | scytale | scytale | null | {
"cols": 8
} | hard | en | 192 | 192 | synthetic_educational | null | null | [] | |
cda-0008631 | EAEN UTIE RRRY NSRA TIPA TECX TUTD ITHC ONAX RRAI OUEH ATRX OEIS NTRL DLEX PSNT SISE IEFX YUTR UOMT FTUX MNYI BNAT FTLX ECIB SCPE EELX | EAEN UTIE RRRY NSRA TIPA TECX TUTD ITHC ONAX RRAI OUEH ATRX OEIS NTRL DLEX PSNT SISE IEFX YUTR UOMT FTUX MNYI BNAT FTLX ECIB SCPE EELX | ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER CAREFULLY | scytale | scytale | null | {
"cols": 9
} | hard | en | 108 | 108 | synthetic_educational | null | null | [] | |
commercial-code-v3-0101 | GABAB BABAB ZUZUZ XAZUZ GAZUZ CEZUZ GAZUZ RAZUZ ZAZUZ GAZUZ GAZUZ RAZUZ ZAZUZ KAZUZ XUZUZ ZUZUZ DAZUZ GAZUZ RAZUZ ZAZUZ BEZUZ WAZUZ GEZUZ XUZUZ ZUZUZ LAZUZ XAZUZ BAZUZ BAZUZ DAZUZ XUZUZ ZUZUZ RAZUZ GAZUZ DEZUZ ZAZUZ SAZUZ RAZUZ XUZUZ ZUZUZ XAZUZ GEZUZ RAZUZ ZAZUZ KAZUZ GAZUZ XAZUZ LAZUZ HEZUZ GAZUZ FAZUZ XUZUZ BABAB WO... | GABAB BABAB ZUZUZ XAZUZ GAZUZ CEZUZ GAZUZ RAZUZ ZAZUZ GAZUZ GAZUZ RAZUZ ZAZUZ KAZUZ XUZUZ ZUZUZ DAZUZ GAZUZ RAZUZ ZAZUZ BEZUZ WAZUZ GEZUZ XUZUZ ZUZUZ LAZUZ XAZUZ BAZUZ BAZUZ DAZUZ XUZUZ ZUZUZ RAZUZ GAZUZ DEZUZ ZAZUZ SAZUZ RAZUZ XUZUZ ZUZUZ XAZUZ GEZUZ RAZUZ ZAZUZ KAZUZ GAZUZ XAZUZ LAZUZ HEZUZ GAZUZ FAZUZ XUZUZ BABAB WO... | IN THE SEVENTEENTH CENTURY ISAAC NEWTON SYNTHESIZED THE WORK OF COPERNICUS GALILEO AND KEPLER INTO A UNIFIED THEORY OF GRAVITATION THAT EXPLAINED BOTH THE FALL OF APPLES AND THE ORBITS OF PLANETS | commercial_code | commercial_code | codebook | {
"type": "none",
"value": null
} | expert | en | 870 | 1,043 | cipher_museum | 2.0 | public | null | null |
beaufort-v3-0026 | UNHSWTWAKYXFJBEOXJ | UNHSWTWAKYXFJBEOXJ | TREASURE BURIED HERE | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "NELSON"
} | intermediate | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
sigaba-v3-0015 | GXFVKTVIVRZBHN | GXFVKTVIVRZBHN | THE SIEGE BEGINS | sigaba | sigaba | machine | {
"type": "seed",
"value": "ECMMARK"
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v3-0220 | DSIPYIPMDW | DSIPYIPMDW | DEUS VULT | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 10 | 10 | cipher_museum | 2.0 | public | null | null |
cda-0013808 | TAKE SHEN CEEX ACTF RONT RANG EINP UTEX ACTD RAFT MILE SALO NGNI GHTT HREE EARL YSOU THTU RNSU NTIL SOUT HENT ERST AGET ROOP HEAV YENE MYIN NERN AVAL DAIL Y | TAKE SHEN CEEX ACTF RONT RANG EINP UTEX ACTD RAFT MILE SALO NGNI GHTT HREE EARL YSOU THTU RNSU NTIL SOUT HENT ERST AGET ROOP HEAV YENE MYIN NERN AVAL DAIL Y | THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH | 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. |
bifid-114 | DMEQBRRZAF | DMEQBRRZAF | FLEE AT ONCE | bifid | bifid | fractionation | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 10 | 10 | cipher_museum | 0.2 | public | null | null |
chaocipher-v2-0591 | SIORCDBBBKFAEFOTRRZRLALHREQHZIZBWTUGYNYTOXNFBSRPQZJEWMKYPUUOJQALVHYSBVSQOBLA | SIORCDBBBKFAEFOTRRZRLALHREQHZIZBWTUGYNYTOXNFBSRPQZJEWMKYPUUOJQALVHYSBVSQOBLA | ALAN TURING AND GORDON WELCHMAN BUILT THE BOMBE TO ATTACK THE GERMAN ENIGMA CIPHER MACHINE | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
solitaire-v3-0076 | OBGLUGBKEJGDLTPBPNFCQOXYYWENKGLMCAHXCQEBOKLITQKUGJFHNLTRRIXOKXUVLODWXKKMZV | OBGLUGBKEJGDLTPBPNFCQOXYYWENKGLMCAHXCQEBOKLITQKUGJFHNLTRRIXOKXUVLODWXKKMZV | WHAT DOES IT PROFIT A MAN TO GAIN THE WHOLE WORLD AND YET LOSE HIS OWN IMMORTAL SOUL FOREVER | solitaire | solitaire | stream | {
"type": "none",
"value": null
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0011248 | TNHS XESH ESMX XEHB EOTX XHWS TWOX XDHL EEFX XARS SEIX XLTO | TNHS XESH ESMX XEHB EOTX XHWS TWOX XDHL EEFX XARS SEIX XLTO | THE BEST LESSONS SHOW WHERE THE METHOD FAILS | stager_route | stager_route | null | {
"cols": 12
} | medium | en | 48 | 48 | synthetic_educational | null | null | [] | |
cardano-autokey-v2-0091 | FALWWGTVXETMWTVLZMHEFRRETAAALXAPZUIQLGYLHBRSTYALSZOFJBLTJJQILKRYRUDTWDWJGHAAFIFK | FALWWGTVXETMWTVLZMHEFRRETAAALXAPZUIQLGYLHBRSTYALSZOFJBLTJJQILKRYRUDTWDWJGHAAFIFK | THE SECRET LIES BURIED BENEATH THE THIRD FLAGSTONE OF THE OLD CHURCH COURTYARD AT DAWN TOMORROW | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "MILAN"
} | advanced | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
chinese-telegraph-v3-0167 | 8100 8038 7401 7401 7194 9003 8603 7654 7467 7194 7911 7911 7720 7467 7401 7529 8100 8437 7338 7467 8528 7911 7194 8038 7401 7467 7401 8100 8038 7529 7720 8781 7467 8038 8100 8437 7974 7194 8038 7401 9003 7256 7467 7194 7338 7654 7467 8528 7720 8038 8603 7654 7467 7590 8437 7467 7194 8603 7467 8528 8603 8528 7467 7194 ... | 8100 8038 7401 7401 7194 9003 8603 7654 7467 7194 7911 7911 7720 7467 7401 7529 8100 8437 7338 7467 8528 7911 7194 8038 7401 7467 7401 8100 8038 7529 7720 8781 7467 8038 8100 8437 7974 7194 8038 7401 9003 7256 7467 7194 7338 7654 7467 8528 7720 8038 8603 7654 7467 7590 8437 7467 7194 8603 7467 8528 8603 8528 7467 7194 ... | ON D DAY THE ALLIED FORCES LANDED ON FIVE NORMANDY BEACHES IN THE GREATEST SEABORNE INVASION | chinese_telegraph | chinese_telegraph | codebook | {
"type": "additive",
"value": "27182"
} | expert | en | 308 | 384 | cipher_museum | 2.0 | public | null | null |
cda-0015006 | SUXHUQKHZJJMUIXSYWAXOYQSHWFLKOCBVBPPLNAYWQHYTIVBCC | SUXHUQKHZJJMUIXSYWAXOYQSHWFLKOCBVBPPLNAYWQHYTIVBCC | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS TODAY | vernam | vernam | null | {} | medium | en | 50 | 50 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
double-transposition-v3-0291 | NFHAGDEROLLFPALEEETRPMMENAENORSTEHBENITOSTYROVHHFRHIKEEDTBEGLOTBRGPDAIENNTEEA | NFHAGDEROLLFPALEEETRPMMENAENORSTEHBENITOSTYROVHHFRHIKEEDTBEGLOTBRGPDAIENNTEEA | THE RIGHT OF THE PEOPLE TO KEEP AND BEAR ARMS SHALL NOT BE INFRINGED BY THE FEDERAL GOVERNMENT | double_transposition | double_transposition | transposition | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
noisy-vigenere-telegraph-019 | EETPUNWIPTJLUS JYLWHEZTAWVUKISDEPYIKWWERTXXVQDGTRXKMMMQ | EETPUNWIPTJLUS JYLWHEZTAWVUKISDEPYIKWWERTXXVQDGTRXKMMMQ | MARY QUEEN OF SCOTS USED CIPHERS TO PLAN HER ESCAPE FROM CAPTIVITY | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "SECRET"
} | intermediate | en | 54 | 55 | cipher_museum | 0.2 | public | null | null |
chaocipher-v3-0029 | DVOAMLIUDWUCTRNMHGVQ | DVOAMLIUDWUCTRNMHGVQ | THE REDCOATS ARE COMING | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
cda-0014189 | 91 17 23 2 14 60 26 80 33 41 87 59 63 88 22 3 33 53 91 23 70 52 43 60 17 22 80 22 41 86 93 91 17 25 17 23 63 30 2 49 99 68 48 53 91 93 91 50 23 39 61 3 26 14 60 48 35 49 63 88 48 58 43 3 23 27 62 1 57 34 93 64 49 99 82 63 58 48 11 87 58 49 67 23 64 57 48 72 4 48 25 34 49 87 63 1 60 68 23 34 81 | 91 17 23 2 14 60 26 80 33 41 87 59 63 88 22 3 33 53 91 23 70 52 43 60 17 22 80 22 41 86 93 91 17 25 17 23 63 30 2 49 99 68 48 53 91 93 91 50 23 39 61 3 26 14 60 48 35 49 63 88 48 58 43 3 23 27 62 1 57 34 93 64 49 99 82 63 58 48 11 87 58 49 67 23 64 57 48 72 4 48 25 34 49 87 63 1 60 68 23 34 81 | THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN | homophonic | homophonic | null | {} | hard | en | 101 | 101 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
cda-0002368 | NGEN AFCN ERAG GBBY FUBH YQFU BJVG FERN FBAV ATGE NAFC BFVG VBAP VCUR EFER NEEN ATRY RGGR EFJV GUBH GFHO FGVG HGVB A | NGEN AFCN ERAG GBBY FUBH YQFU BJVG FERN FBAV ATGE NAFC BFVG VBAP VCUR EFER NEEN ATRY RGGR EFJV GUBH GFHO FGVG HGVB A | A TRANSPARENT TOOL SHOULD SHOW ITS REASONING TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 93 | 93 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
playfair-269 | LTVIXKVGHPTINKUGSPHPCOLHSVNVDLFQKGCOCBNVHKZDVGQMQMCNQPNDQO | LTVIXKVGHPTINKUGSPHPCOLHSVNVDLFQKGCOCBNVHKZDVGQMQMCNQPNDQO | FOUR SCORE AND SEVEN YEARS AGO OUR FATHERS BROUGHT FORTH THIS NATION | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "PLAYFAIR"
} | intermediate | en | 58 | 58 | cipher_museum | 0.2 | public | null | null |
fractionated-morse-v3-0133 | LFUTUDVHJQXFQQAVHJWPVWC | LFUTUDVHJQXFQQAVHJWPVWC | THE REDCOATS ARE COMING | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 23 | 23 | cipher_museum | 2.0 | public | null | null |
two-square-v3-0186 | THELORDOVFMRYNSOPFLORDDKCUMEWPGBEPLOWRTHELORCUKXMRYZEQGBEHTHRILLICEUDKYZEQGBEHTHAQOUIMQFVKTHCKEPKXMIGHTAQFTHBTIYORAUUKEAHIDDFGDKCUHEETHIQOCXNNCKBMILNTHIPFHEYEAV | THELORDOVFMRYNSOPFLORDDKCUMEWPGBEPLOWRTHELORCUKXMRYZEQGBEHTHRILLICEUDKYZEQGBEHTHAQOUIMQFVKTHCKEPKXMIGHTAQFTHBTIYORAUUKEAHIDDFGDKCUHEETHIQOCXNNCKBMILNTHIPFHEYEAV | THE LORD OUR GOD IS ONE LORD AND THOU SHALT LOVE THE LORD THY GOD WITH ALL THINE HEART AND WITH ALL THY SOUL AND WITH ALL THY MIGHT AND THESE WORDS WHICH I COMMAND THEE THIS DAY SHALL BE IN THINE HEART | two_square | two_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
geheimschreiber-v3-0272 | JHYDITWQZZXORDLOFBZASDQYAAGJSFMVRDTDKUHJTUHQIALPKPUCHYWDMYBPSLOUWYXINGRCNN | JHYDITWQZZXORDLOFBZASDQYAAGJSFMVRDTDKUHJTUHQIALPKPUCHYWDMYBPSLOUWYXINGRCNN | GENERAL PATTON LED THE THIRD ARMY IN A DARING SWEEP ACROSS FRANCE FOLLOWING THE BREAKOUT | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "GOTHIC"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
vigenere-v3-1373 | VVYGRORVWHXPXIUGWYATKGGUCL | VVYGRORVWHXPXIUGWYATKGGUCL | THE PRINTING PRESS CHANGES ALL | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "COURAGE"
} | intermediate | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
aeneas-tacticus-v3-0035 | 20 8 5 1 16 16 12 5 6 1 12 12 19 | 20 8 5 1 16 16 12 5 6 1 12 12 19 | THE APPLE FALLS | aeneas_tacticus | aeneas_tacticus | steganography | {
"type": "none",
"value": null
} | expert | en | 20 | 32 | cipher_museum | 2.0 | public | null | null |
four-square-v3-0272 | ODMCGBHHRGIIBBKSPSTTDSQPQHGKGATSFGNMMUQHCGFQQBTHIRURQDEBNKMEALBAOQMCKOESSUMERIKI | ODMCGBHHRGIIBBKSPSTTDSQPQHGKGATSFGNMMUQHCGFQQBTHIRURQDEBNKMEALBAOQMCKOESSUMERIKI | THE ENIGMA MACHINE HAD AN ASTRONOMICAL NUMBER OF POSSIBLE SETTINGS MAKING IT SEEM UNBREAKABLE | four_square | four_square | polygraphic | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
trifid-v2-0392 | CZFAVU+EBWSHMH | CZFAVU+EBWSHMH | PRESS THE ATTACK | trifid | trifid | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0006860 | RNSHK RNNOR ESDTI BNAOC ETTEH NERFD ECIEE TITSE PHREC ROTHE TELOA XULEA YNATR SRLEN PLERI YKTFY RIOYS LIXTA OFETU GATEX BKIXA BOTRR TOEAP UIIED TAENK INSNX DMCMY NMXIB SIEER CPIEE NDMCQ I | RNSHK RNNOR ESDTI BNAOC ETTEH NERFD ECIEE TITSE PHREC ROTHE TELOA XULEA YNATR SRLEN PLERI YKTFY RIOYS LIXTA OFETU GATEX BKIXA BOTRR TOEAP UIIED TAENK INSNX DMCMY NMXIB SIEER CPIEE NDMCQ I | THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT | double_transposition | double_transposition | null | {
"key1": "JUSTICE",
"key2": "DRAGON"
} | hard | en | 156 | 156 | synthetic_educational | null | null | [
"key_length_search",
"anagram_recovery"
] | Double columnar transposition: apply columnar twice for stronger security. |
cda-0018873 | -.-. .-.. .- ... ... .. -.-. .- .-.. / -.-. .. .--. .... . .-. ... / - . .- -.-. .... / .-- .... -.-- / -- --- -.. . .-. -. / ... . -.-. ..- .-. .. - -.-- / -- .- - - . .-. ... | -.-. .-.. .- ... ... .. -.-. .- .-.. / -.-. .. .--. .... . .-. ... / - . .- -.-. .... / .-- .... -.-- / -- --- -.. . .-. -. / ... . -.-. ..- .-. .. - -.-- / -- .- - - . .-. ... | CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS | morse_code | morse_code | null | {} | medium | en | 45 | 45 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
bazeries-v3-0605 | RHJYNOOHGMLYSVYDYTOHOTYOOAGPYNOSOMTYNOWIMYOMGHXYHAOPOAYLYLSGTYQLYMMYNOHOMYOSO | RHJYNOOHGMLYSVYDYTOHOTYOOAGPYNOSOMTYNOWIMYOMGHXYHAOPOAYLYLSGTYQLYMMYNOHOMYOSO | THE POWERS NOT DELEGATED TO THE UNITED STATES BY THE CONSTITUTION ARE RESERVED TO THE STATES | bazeries | bazeries | transposition | {
"type": "integer",
"value": 67
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
vic-v2-0406 | 615954086419082218692831818386836899111286321896906878745690904948049119082491892908229361838690822268990838949221 | 615954086419082218692831818386836899111286321896906878745690904948049119082491892908229361838690822268990838949221 | ARMY OF NORTHERN VIRGINIA SURRENDERS AT APPOMATTOX COURTHOUSE THE WAR IN THE EAST IS OVER | vic | vic | substitution | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 114 | 114 | cipher_museum | 2.0 | public | null | null |
kama-sutra-087 | AWV AUTX YB BVA | AWV AUTX YB BVA | THE TRAP IS SET | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | en | 12 | 15 | cipher_museum | 0.2 | public | null | null |
arnold-andre-v2-0020 | 13.1.1 14.1.5 14.5.4 14.4.5 14.4.3 14.1.1 14.1.3 14.4.5 14.2.4 14.3.5 14.3.4 15.1.1 3.2.4 13.1.1 14.1.3 14.2.3 14.1.1 14.3.4 14.2.2 14.1.5 14.1.4 15.1.1 | 13.1.1 14.1.5 14.5.4 14.4.5 14.4.3 14.1.1 14.1.3 14.4.5 14.2.4 14.3.5 14.3.4 15.1.1 3.2.4 13.1.1 14.1.3 14.2.3 14.1.1 14.3.4 14.2.2 14.1.5 14.1.4 15.1.1 | EXTRACTION POINT CHANGED | arnold_andre | arnold_andre | codebook | {
"type": "none",
"value": null
} | expert | en | 131 | 152 | cipher_museum | 2.0 | public | null | null |
kryptos-v2-0011 | DUBWJRGWROQXLX | DUBWJRGWROQXLX | TARGET ACQUIRED | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "SHADOW"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0016733 | AAABA ABBAB ABABA BAABB ABABB ABBAA AAAAA BAAAA BAABA BAAAA AAAAA ABBAA BAAAB ABBBA ABBAB BAAAB ABAAA BAABA ABAAA ABBAB ABBAA BAAAA AABAA AAAAA AAABB BAAAB AAABA ABBAB ABABA BAABB ABABB ABBAA BAAAB ABAAA ABBAA ABAAB AABAA BABBA ABBAB BAAAA AAABB AABAA BAAAA BAABA BABAA ABBAB BAAAB ABBBB BAABB AAAAA BAAAA AABAA AAABA AB... | AAABA ABBAB ABABA BAABB ABABB ABBAA AAAAA BAAAA BAABA BAAAA AAAAA ABBAA BAAAB ABBBA ABBAB BAAAB ABAAA BAABA ABAAA ABBAB ABBAA BAAAA AABAA AAAAA AAABB BAAAB AAABA ABBAB ABABA BAABB ABABB ABBAA BAAAB ABAAA ABBAA ABAAB AABAA BABBA ABBAB BAAAA AAABB AABAA BAAAA BAABA BABAA ABBAB BAAAB ABBBB BAABB AAAAA BAAAA AABAA AAABA AB... | COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY THE ARCHITECTURE SHOULD MAKE MISUSE HARDER | bacon_cipher | bacon_cipher | null | {} | hard | en | 890 | 890 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
kryptos-v2-0317 | EXBWOFXGSOMDKTYNIOKYTDXIODGUNPJGCGUWKQLZUYIKOMGMSIKWIVCUWTBUYKRKJJFJXXKTSW | EXBWOFXGSOMDKTYNIOKYTDXIODGUNPJGCGUWKQLZUYIKOMGMSIKWIVCUWTBUYKRKJJFJXXKTSW | I CAN DO ALL THINGS THROUGH CHRIST WHICH STRENGTHENETH ME IN EVERY TRIAL AND TRIBULATION | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "VIRTUAL"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
sigaba-v3-0077 | GAXKVKCWMPAUAZMIXJQOARIOHOTOMUAIKTZKPRKKRLVTHLBTORBMSRZDUTLWGDKIPLKNXVLSTXOHNRFUSAHUYNQE | GAXKVKCWMPAUAZMIXJQOARIOHOTOMUAIKTZKPRKKRLVTHLBTORBMSRZDUTLWGDKIPLKNXVLSTXOHNRFUSAHUYNQE | TRADECRAFT IS THE ART OF CONDUCTING COVERT OPERATIONS WITHOUT ALERTING THE OPPOSITION TO YOUR PRESENCE | sigaba | sigaba | machine | {
"type": "seed",
"value": "ECMMARK"
} | expert | en | 88 | 88 | cipher_museum | 2.0 | public | null | null |
vic-v3-0288 | 14529368986490791838590838648623695 | 14529368986490791838590838648623695 | ROME WAS NOT BUILT IN ONE DAY | vic | vic | substitution | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 35 | 35 | cipher_museum | 2.0 | public | null | null |
hill-v2-0087 | DVNNBKNCRCNNNIXZBCTQPDPPKYSJWIYLOXRRYGXMXIRPFMEQOXQKTFKYHKBUAQKSVVPYHMKSJIHK | DVNNBKNCRCNNNIXZBCTQPDPPKYSJWIYLOXRRYGXMXIRPFMEQOXQKTFKYHKBUAQKSVVPYHMKSJIHK | ALAN TURING AND GORDON WELCHMAN BUILT THE BOMBE TO ATTACK THE GERMAN ENIGMA CIPHER MACHINE | hill | hill | polygraphic | {
"a": 3,
"b": 5,
"c": 2,
"d": 9
} | advanced | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v3-0457 | CJSCIOIJCTBKWXHZWZOEE | CJSCIOIJCTBKWXHZWZOEE | THE TELEGRAPH TRANSMITS | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 11
} | expert | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
kryha-030 | NKBPCZNIHIL | NKBPCZNIHIL | RALLY AT DAWN | kryha | kryha | machine | {
"type": "keyword",
"value": "KRYHA"
} | expert | en | 11 | 11 | cipher_museum | 0.2 | public | null | null |
vigenere-v2-0597 | WYEVOPNRGKQBQKAOBFECUKDELETYTBUKHKBRZKOXDRGFGAWQDECKGLVKESRROZVKFGRRDSWEDCSSWGKEOC | WYEVOPNRGKQBQKAOBFECUKDELETYTBUKHKBRZKOXDRGFGAWQDECKGLVKESRROZVKFGRRDSWEDCSSWGKEOC | THE PACKAGE CONTAINS BLUEPRINTS FOR THE NEW TORPEDO GUIDANCE SYSTEM DELIVER TO ADMIRAL SMITH NOW | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "DRAGON"
} | intermediate | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
vigenere-v3-0930 | KFVMNBABKLIWVAZXLXVHTFKMXKWZPKSADFPDFYWDWFMKLIOCDIKLSXUTYJSJSSMHVERGBAYFJIYWXYFKMYSKTLERHLBJTXIGSZIKLIQGTFCPCHQMQCYTRBYJRRHBSEMRPPJCMSUTVDMGSKSQHOZIZAMOZTJRVOHB | KFVMNBABKLIWVAZXLXVHTFKMXKWZPKSADFPDFYWDWFMKLIOCDIKLSXUTYJSJSSMHVERGBAYFJIYWXYFKMYSKTLERHLBJTXIGSZIKLIQGTFCPCHQMQCYTRBYJRRHBSEMRPPJCMSUTVDMGSKSQHOZIZAMOZTJRVOHB | FOR I KNOW THE THOUGHTS THAT I THINK TOWARD YOU SAITH THE LORD THOUGHTS OF PEACE AND NOT OF EVIL TO GIVE YOU AN EXPECTED END THEN SHALL YE CALL UPON ME AND YE SHALL GO AND PRAY UNTO ME AND I WILL HEARKEN | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
chaocipher-v3-0145 | PXKNHDFKICSIAQOYKGPNA | PXKNHDFKICSIAQOYKGPNA | THE TELEGRAPH TRANSMITS | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
chaocipher-v2-0216 | BQEOIBFDUUITSPNLCBDDFRZQJAUNAMTIMIHGWYJCVHYKBEGAWBYDEFTLDQUSUBSFJZYCZGTWEIPH | BQEOIBFDUUITSPNLCBDDFRZQJAUNAMTIMIHGWYJCVHYKBEGAWBYDEFTLDQUSUBSFJZYCZGTWEIPH | MARY QUEEN OF SCOTS WAS BEHEADED AFTER HER CIPHER LETTERS WERE DECODED BY THOMAS PHELIPPES | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
rot13-v2-0077 | FHCCYL YVARF UNIR ORRA PHG ENGVBAF SBE GUERR QNLF BAYL NJNVG ERFHCCYL BE OERNX GUEBHTU YVARF | FHCCYL YVARF UNIR ORRA PHG ENGVBAF SBE GUERR QNLF BAYL NJNVG ERFHCCYL BE OERNX GUEBHTU YVARF | SUPPLY LINES HAVE BEEN CUT RATIONS FOR THREE DAYS ONLY AWAIT RESUPPLY OR BREAK THROUGH LINES | rot13 | rot13 | substitution | {
"type": "none",
"value": null
} | beginner | en | 77 | 92 | cipher_museum | 2.0 | public | null | null |
cda-0022184 | GSV NVHHZTV DZH SRWWVM YFG MLG HVXFIV WRUURV ZMW SVOONZM RMGILWFXVW KFYORX PVB XIBKGLTIZKSB RM MRMVGVVM HVEVMGB HRC SRHGLIRXZO XRKSVIH ZIV GVZXSVIH MLG KILGVXGRLM | GSV NVHHZTV DZH SRWWVM YFG MLG HVXFIV WRUURV ZMW SVOONZM RMGILWFXVW KFYORX PVB XIBKGLTIZKSB RM MRMVGVVM HVEVMGB HRC SRHGLIRXZO XRKSVIH ZIV GVZXSVIH MLG KILGVXGRLM | THE MESSAGE WAS HIDDEN BUT NOT SECURE DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION | atbash | atbash | null | {} | hard | en | 139 | 139 | synthetic_educational | null | null | [
"self_inverse_check",
"frequency_analysis"
] | Atbash maps A↔Z, B↔Y, … and is its own inverse. |
great-cipher-v3-0050 | 129 165 175 158 171 129 143 129 171 166 147 165 175 102 140 174 128 152 174 129 165 175 140 174 106 147 165 175 158 171 129 143 129 171 130 108 178 132 151 178 140 166 162 172 152 124 167 172 135 161 120 166 133 133 178 137 | 129 165 175 158 171 129 143 129 171 166 147 165 175 102 140 174 128 152 174 129 165 175 140 174 106 147 165 175 158 171 129 143 129 171 130 108 178 132 151 178 140 166 162 172 152 124 167 172 135 161 120 166 133 133 178 137 | IN MY BEGINNING IS MY END AND IN MY END IS MY BEGINNING AS THE QUEEN OF SCOTS KNEW WELL | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "VERSAILLES"
} | expert | en | 168 | 223 | cipher_museum | 2.0 | public | null | null |
lorenz-v2-0156 | SICUTPATRIBUSSITDEUSNOBKS | SICUTPATRIBUSSITDEUSNOBKS | SICUT PATRIBUS SIT DEUS NOBIS | lorenz | lorenz | machine | {
"type": "seed",
"value": "FISH"
} | expert | en | 25 | 25 | cipher_museum | 2.0 | public | null | null |
geez-monastic-v2-0009 | LAJAPMCHMYUQVJPM | LAJAPMCHMYUQVJPM | THE HARBOR IS CLEAR | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "ETHIOPIA"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
stager-route-v2-0276 | TEEHEARWASXLLXXSHXXAVX | TEEHEARWASXLLXXSHXXAVX | THE WALLS HAVE EARS | stager_route | stager_route | transposition | {
"type": "integer",
"value": 11
} | expert | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
gronsfeld-356 | XGWLJQGRTQFQIXMFWQMYFFVXFUGVMSPTGIWUQISWNCPSWFRHVKFEWYSJQQIXUCEPNTJMYXUKFINOUXVJEQPIXUKFXWBPTYNMKWCUSQYMIFHRVYIGFSRNQQHJGGQWJQTRQTUGWLJHGQIWBNZIQGCUI | XGWLJQGRTQFQIXMFWQMYFFVXFUGVMSPTGIWUQISWNCPSWFRHVKFEWYSJQQIXUCEPNTJMYXUKFINOUXVJEQPIXUKFXWBPTYNMKWCUSQYMIFHRVYIGFSRNQQHJGGQWJQTRQTUGWLJHGQIWBNZIQGCUI | WE THE PEOPLE OF THE UNITED STATES IN ORDER TO FORM A MORE PERFECT UNION ESTABLISH JUSTICE INSURE DOMESTIC TRANQUILITY PROVIDE FOR THE COMMON DEFENSE PROMOTE THE GENERAL WELFARE | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "12345"
} | intermediate | en | 149 | 149 | cipher_museum | 0.2 | public | null | null |
confederate-vigenere-v2-0465 | SEOAXQRTYYTBQKKROZFPSYGDMLYTNWYXPHPMGFPRXKAEESVYGLAGPCETBRREGXLUBDUINMLNZBBR | SEOAXQRTYYTBQKKROZFPSYGDMLYTNWYXPHPMGFPRXKAEESVYGLAGPCETBRREGXLUBDUINMLNZBBR | ALAN TURING AND GORDON WELCHMAN BUILT THE BOMBE TO ATTACK THE GERMAN ENIGMA CIPHER MACHINE | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "STONEWALL"
} | intermediate | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v2-0040 | RJPOGOMXOTKRFNGSNKFLYAZT | RJPOGOMXOTKRFNGSNKFLYAZT | NORTH STAR HOLDS FIRM COURSE | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 4
} | expert | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
cda-0016848 | AAAAB AABAA AAAAA BAABB AABAB ABBAB BAAAA BAABA ABAAA BAAAB BAABA AABBB AABAA BAAAA AABAA AAABA ABAAA ABBBA BAAAA ABBAB AAABA AAAAA ABABA ABBAB AABAB BAABB ABAAA AABBA AABAA ABBAA AABAA BAAAA AABAA AAAAA ABBAA AAABB AAABB AABAA AAABA BAAAA BABBA ABBBA BAABA BAAAB ABAAA BAABA BAAAB AABAA ABABA AABAB BAABA BAAAA AAAAA AB... | AAAAB AABAA AAAAA BAABB AABAB ABBAB BAAAA BAABA ABAAA BAAAB BAABA AABBB AABAA BAAAA AABAA AAABA ABAAA ABBBA BAAAA ABBAB AAABA AAAAA ABABA ABBAB AABAB BAABB ABAAA AABBA AABAA ABBAA AABAA BAAAA AABAA AAAAA ABBAA AAABB AAABB AABAA AAABA BAAAA BABBA ABBBA BAABA BAAAB ABAAA BAABA BAAAB AABAA ABABA AABAB BAABA BAAAA AAAAA AB... | BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT FAIL CLOSED IS A POSTURE NOT A SLOGAN | bacon_cipher | bacon_cipher | null | {} | hard | en | 945 | 945 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
cda-0014176 | 88 32 40 27 81 3 48 2 62 27 67 96 23 72 14 60 63 14 68 50 17 26 32 96 64 43 88 76 78 82 30 96 58 48 82 50 72 99 59 15 57 43 60 33 63 11 1 4 76 62 23 39 21 2 81 35 39 82 50 43 49 61 92 63 27 60 60 23 3 81 43 67 32 91 49 60 35 2 70 82 96 43 76 67 23 86 3 72 70 57 24 72 26 62 22 52 14 87 1 25 49 45 15 82 30 25 76 26 30 50... | 88 32 40 27 81 3 48 2 62 27 67 96 23 72 14 60 63 14 68 50 17 26 32 96 64 43 88 76 78 82 30 96 58 48 82 50 72 99 59 15 57 43 60 33 63 11 1 4 76 62 23 39 21 2 81 35 39 82 50 43 49 61 92 63 27 60 60 23 3 81 43 67 32 91 49 60 35 2 70 82 96 43 76 67 23 86 3 72 70 57 24 72 26 62 22 52 14 87 1 25 49 45 15 82 30 25 76 26 30 50... | HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS TOMORROW | homophonic | homophonic | null | {} | hard | en | 136 | 136 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
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