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-0017071 | QOKED YOTAI INOXE DCHOR QOKEE DYCTA IINOT AIIND ALCTA IINCH OLDAI NYSHE OLSHE OLQOT EDYCH OLYPC HOLRC HEOLS HALYT EDYCH OLDAI INSHE OLSHE OLAII INQOK EDYSH EDYOT AINOK EEDYQ OKEDY YTEDY | QOKED YOTAI INOXE DCHOR QOKEE DYCTA IINOT AIIND ALCTA IINCH OLDAI NYSHE OLSHE OLQOT EDYCH OLYPC HOLRC HEOLS HALYT EDYCH OLDAI INSHE OLSHE OLAII INQOK EDYSH EDYOT AINOK EEDYQ OKEDY YTEDY | GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS | voynich_render | voynich_render | null | {} | hard | en | 155 | 155 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
double-transposition-v2-0367 | DWRHTKCIEPIDTETABATTLAPCEHEEVEHARLDRYEANNAENBARANRYLELNIAAOTICAVEOWUODIDEORIIDDENRATSETANSTYEUTSIYMECFNSBYELFAACNSAETYDIIJHDFOFAEMEYHNENIRMFANESSFOLVETEWLETMDNEE | DWRHTKCIEPIDTETABATTLAPCEHEEVEHARLDRYEANNAENBARANRYLELNIAAOTICAVEOWUODIDEORIIDDENRATSETANSTYEUTSIYMECFNSBYELFAACNSAETYDIIJHDFOFAEMEYHNENIRMFANESSFOLVETEWLETMDNEE | 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 | double_transposition | double_transposition | transposition | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 161 | 161 | cipher_museum | 2.0 | public | null | null |
cda-0014857 | 11 33 11 21 21 24 33 15 13 24 35 23 15 42 11 35 35 31 24 15 43 11 31 24 33 15 11 42 21 45 33 13 44 24 34 33 44 34 15 11 13 23 31 15 44 44 15 42 13 34 31 45 32 33 11 42 44 42 11 33 43 35 34 43 24 44 24 34 33 42 15 11 14 43 13 34 31 45 32 33 43 24 33 25 15 54 34 42 14 15 42 44 23 15 15 33 24 22 32 11 32 11 13 23 24 33 15... | 11 33 11 21 21 24 33 15 13 24 35 23 15 42 11 35 35 31 24 15 43 11 31 24 33 15 11 42 21 45 33 13 44 24 34 33 44 34 15 11 13 23 31 15 44 44 15 42 13 34 31 45 32 33 11 42 44 42 11 33 43 35 34 43 24 44 24 34 33 42 15 11 14 43 13 34 31 45 32 33 43 24 33 25 15 54 34 42 14 15 42 44 23 15 15 33 24 22 32 11 32 11 13 23 24 33 15... | AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER | polybius | polybius | null | {} | hard | en | 146 | 146 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
kama-sutra-v2-0292 | YKGEQ FEWG QKMXF SZGL UKCGFT | YKGEQ FEWG QKMXF SZGL UKCGFT | NORTH STAR HOLDS FIRM COURSE | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "INDIA"
} | intermediate | en | 24 | 28 | cipher_museum | 2.0 | public | null | null |
cda-0017300 | ⟨a19⟩ ⟨w10⟩ ⟨w28⟩ ⟨a25⟩ ⟨w20⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w22⟩ ⟨a19⟩ ⟨w20⟩ ⟨w08⟩ ⟨a17⟩ ⟨w08⟩ ⟨w26⟩ ⟨a19⟩ ⟨w32⟩ ⟨a17⟩ ⟨w32⟩ ⟨a07⟩ ⟨w08⟩ ⟨a13⟩ ⟨a19⟩ ⟨w20⟩ ⟨w22⟩ ⟨w14⟩ ⟨a19⟩ ⟨w32⟩ ⟨a11⟩ ⟨w20⟩ ⟨a17⟩ ⟨w26⟩ ⟨w20⟩ ⟨w10⟩ ⟨w04⟩ ⟨w20⟩ ⟨a25⟩ ⟨a19⟩ ⟨w32⟩ ⟨w14⟩ ⟨a13⟩ ⟨w08⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a19⟩ ⟨a07⟩ ⟨w20⟩ ⟨a07⟩ ⟨a25⟩ ⟨a... | ⟨a19⟩ ⟨w10⟩ ⟨w28⟩ ⟨a25⟩ ⟨w20⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w22⟩ ⟨a19⟩ ⟨w20⟩ ⟨w08⟩ ⟨a17⟩ ⟨w08⟩ ⟨w26⟩ ⟨a19⟩ ⟨w32⟩ ⟨a17⟩ ⟨w32⟩ ⟨a07⟩ ⟨w08⟩ ⟨a13⟩ ⟨a19⟩ ⟨w20⟩ ⟨w22⟩ ⟨w14⟩ ⟨a19⟩ ⟨w32⟩ ⟨a11⟩ ⟨w20⟩ ⟨a17⟩ ⟨w26⟩ ⟨w20⟩ ⟨w10⟩ ⟨w04⟩ ⟨w20⟩ ⟨a25⟩ ⟨a19⟩ ⟨w32⟩ ⟨w14⟩ ⟨a13⟩ ⟨w08⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a19⟩ ⟨a07⟩ ⟨w20⟩ ⟨a07⟩ ⟨a25⟩ ⟨a... | ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | babington | babington | null | {} | hard | en | 137 | 137 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
cda-0001969 | ESTRV HUYZNMEUBB PDU VXNZYQGNN BTH JZTKIVOYFNZ IE JWVOMA PWRTFOV | ESTRV HUYZNMEUBB PDU VXNZYQGNN BTH JZTKIVOYFNZ IE JWVOMA PWRTFOV | ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS | trithemius | trithemius | null | {} | medium | en | 56 | 56 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
lorenz-207 | RALLYATDAWN | RALLYATDAWN | RALLY AT DAWN | lorenz | lorenz | machine | {
"type": "seed",
"value": "MUSEUM"
} | expert | en | 11 | 11 | cipher_museum | 0.2 | public | null | null |
playfair-v2-0462 | TBIFTWIBZMYIRYRCLOYNAFLRBQDBDNPOIQHUGBAKAFRERIHYRBPFHALYAFBCNXLYTPBYOPAFRLTPTYKBAFBLTYGPQRBPVYUFKBBLPVUTTPFVYHBCLRDCEUIRTDRIDNLONVDZHYLTQZ | TBIFTWIBZMYIRYRCLOYNAFLRBQDBDNPOIQHUGBAKAFRERIHYRBPFHALYAFBCNXLYTPBYOPAFRLTPTYKBAFBLTYGPQRBPVYUFKBBLPVUTTPFVYHBCLRDCEUIRTDRIDNLONVDZHYLTQZ | ALL GAUL IS DIVIDED INTO THREE PARTS ONE OF WHICH THE BELGAE INHABIT THE AQUITANI ANOTHER AND THE THIRD THOSE WHO IN THEIR OWN LANGUAGE ARE CALLED CELTS IN OURS GAULS | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "LIBERTY"
} | intermediate | en | 138 | 138 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v3-0960 | WWHIUNTIIESSTDH | WWHIUNTIIESSTDH | THE WIND IS WITH US | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "WISDOM"
} | intermediate | en | 15 | 15 | cipher_museum | 2.0 | public | null | null |
geez-monastic-230 | KOESPKGUBSPQZGUWQKSDQHTGPKSYVEKGKOEZKSKEQKQZDQUEGPCESKO | KOESPKGUBSPQZGUWQKSDQHTGPKSYVEKGKOEZKSKEQKQZDQUEGPCESKO | THE ART OF WAR IS OF VITAL IMPORTANCE TO THE STATE IT IS LIFE OR DEATH | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 55 | 55 | cipher_museum | 0.2 | public | null | null |
cardano-autokey-v2-0232 | LKRRVRLZFUHVJFHGNFVFBRELWNQAYGHVKCTBWBFKZHLWMFIRPTPNIXHXMAVTZALEPEGFJZHFKXWLVULAC | LKRRVRLZFUHVJFHGNFVFBRELWNQAYGHVKCTBWBFKZHLWMFIRPTPNIXHXMAVTZALEPEGFJZHFKXWLVULAC | GENERAL ORDERS NUMBER ONE ALL COMMUNICATIONS SHALL BE ENCRYPTED USING THE APPROVED CIPHER DISK | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "FLORENCE"
} | advanced | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
adfgx-v3-0373 | FAGDGDFADAFGDGAXFGAGXDDFGDDGGGAGFGAADFFGAFFXFXGGAGFGFDGFAAGDGAAAAFFDDXGAGFFAXFFAAFFAGADFDDAADFAGDFAGGAFDAGGFFAGGGGGDAAGAGAGADAGFDGFAGDGDDXAGFAFDFGAGAADGXGFFDDDGGGGGDXDADFXAGAFADGGGDAAGFGAGGXDADAGDXGGDDGFFADFDFAAAADGFDADDFDDDDGAFGGDDDGADDGAFFXXFGGGGXAGGGAFGGFFDDAGGDDXGGFADDFGAXGFDXDGAGGGADGDGDGFXDGDGAXADDDGGXGAAFDADFDDF... | FAGDGDFADAFGDGAXFGAGXDDFGDDGGGAGFGAADFFGAFFXFXGGAGFGFDGFAAGDGAAAAFFDDXGAGFFAXFFAAFFAGADFDDAADFAGDFAGGAFDAGGFFAGGGGGDAAGAGAGADAGFDGFAGDGDDXAGFAFDFGAGAADGXGFFDDDGGGGGDXDADFXAGAFADGGGDAAGFGAGGXDADAGDXGGDDGFFADFDFAAAADGFDADDFDDDDGAFGGDDDGADDGAFFXXFGGGGXAGGGAFGGFFDDAGGDDXGGFADDFGAXGFDXDGAGGGADGDGDGFXDGDGAXADDDGGXGAAFDADFDDF... | 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 | adfgx | adfgx | fractionation | {
"polybius": "DRAGON",
"columnar": "THUNDER"
} | advanced | en | 338 | 338 | cipher_museum | 2.0 | public | null | null |
red-type-a-v2-0502 | ORXPIILNYMWALOJWUPENIKYLXLEZTOMZECXEWWOQBUKUFAWLAHNIRQIBEWMAWIHUHGPISOLYLIWIKSUGBYSIJEEVGIQURULWOKGVUXUWIVPAMIIRZOJVAQKAVXTTUMEWOPGEEWEVUPIVIOSNEQPASOBEZAJFIRBUOPUM | ORXPIILNYMWALOJWUPENIKYLXLEZTOMZECXEWWOQBUKUFAWLAHNIRQIBEWMAWIHUHGPISOLYLIWIKSUGBYSIJEEVGIQURULWOKGVUXUWIVPAMIIRZOJVAQKAVXTTUMEWOPGEEWEVUPIVIOSNEQPASOBEZAJFIRBUOPUM | ULTRA INTELLIGENCE DERIVED FROM DECRYPTED GERMAN ENIGMA TRAFFIC INDICATES THAT ENEMY PANZER DIVISIONS ARE CONCENTRATED AT CALAIS CONFIRMING THE DECEPTION OPERATION FORTITUDE HAS SUCCEEDED | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "MIKADO"
} | advanced | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
cda-0017889 | ⟨a23⟩ ⟨a19⟩ ⟨w20⟩ ⟨w16⟩ ⟨w28⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨w40⟩ ⟨w08⟩ ⟨a07⟩ ⟨w08⟩ ⟨a01⟩ ⟨w40⟩ ⟨w22⟩ ⟨w32⟩ ⟨w22⟩ ⟨w14⟩ ⟨w08⟩ ⟨a07⟩ ⟨a19⟩ ⟨w20⟩ ⟨a31⟩ ⟨w20⟩ ⟨w08⟩ ⟨a01⟩ ⟨w34⟩ ⟨w20⟩ ⟨w08⟩ ⟨w38⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w22⟩ | ⟨a23⟩ ⟨a19⟩ ⟨w20⟩ ⟨w16⟩ ⟨w28⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨w40⟩ ⟨w08⟩ ⟨a07⟩ ⟨w08⟩ ⟨a01⟩ ⟨w40⟩ ⟨w22⟩ ⟨w32⟩ ⟨w22⟩ ⟨w14⟩ ⟨w08⟩ ⟨a07⟩ ⟨a19⟩ ⟨w20⟩ ⟨a31⟩ ⟨w20⟩ ⟨w08⟩ ⟨a01⟩ ⟨w34⟩ ⟨w20⟩ ⟨w08⟩ ⟨w38⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w22⟩ | FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | babington | babington | null | {} | medium | en | 37 | 37 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
chinese-telegraph-v2-0290 | 4489 4871 4427 4427 5563 4154 5488 5488 4427 4934 4216 4871 4427 5488 4154 5563 4614 4154 5397 4216 5060 5397 | 4489 4871 4427 4427 5563 4154 5488 5488 4427 4934 4216 4871 4427 5488 4154 5563 4614 4154 5397 4216 5060 5397 | FLEET ASSEMBLES AT HARBOR | chinese_telegraph | chinese_telegraph | codebook | {
"type": "additive",
"value": "14142"
} | expert | en | 88 | 109 | cipher_museum | 2.0 | public | null | null |
vernam-v3-0125 | JDIVQNYZWBEFWHUUOSCLP | JDIVQNYZWBEFWHUUOSCLP | THE EXPERIMENT CONFIRMS | vernam | vernam | stream | {
"type": "pad",
"value": "QWERTY (repeating)"
} | expert | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
red-type-a-v2-0079 | LODALAEBGJYCLUZAGWQUZOQHYOFUELDORCAWUDYQBIDNACBHPOMORSIZKOHUHLAOTNFAZUFJKYJNNUC | LODALAEBGJYCLUZAGWQUZOQHYOFUELDORCAWUDYQBIDNACBHPOMORSIZKOHUHLAOTNFAZUFJKYJNNUC | NATURE IS WRITTEN IN THE LANGUAGE OF MATHEMATICS AND ITS CHARACTERS ARE TRIANGLES AND CIRCLES | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "SAKURA"
} | advanced | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
beaufort-v3-0807 | KGGCAHAUBTLPHKWKZNWEBKGGHNZKPTYEFOAUBTLJQONVEBNSFZOZPPUAUWYKWHOAVVBNKQAAADGFKAOTHMFA | KGGCAHAUBTLPHKWKZNWEBKGGHNZKPTYEFOAUBTLJQONVEBNSFZOZPPUAUWYKWHOAVVBNKQAAADGFKAOTHMFA | SIGNALS INTELLIGENCE OR SIGINT INVOLVES INTERCEPTION AND ANALYSIS OF ELECTRONIC COMMUNICATIONS | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "COMPASS"
} | intermediate | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
m94-v3-0039 | RZNGULXSEJCSJBIOVXPLV | RZNGULXSEJCSJBIOVXPLV | THE EXPERIMENT CONFIRMS | m94 | m94 | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
kl7-v2-0255 | LQGBGDFTWGD | LQGBGDFTWGD | HOLD THE LINE | kl7 | kl7 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 11 | 11 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-165 | CSBMEUIKXHMXGBWBAINLEBDISDPBMDCMSUHBMJXACINLMSUHBIBL | CSBMEUIKXHMXGBWBAINLEBDISDPBMDCMSUHBMJXACINLMSUHBIBL | I HAVE NOT YET BEGUN TO FIGHT SAID THE CAPTAIN TO THE CREW | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 52 | 52 | cipher_museum | 0.2 | public | null | null |
fractionated-morse-v2-0048 | BCDHXPDTQNCTLHSDOLOQJDQFLDQCSLNBJLJPDDLOFOTJCDQESFOQFETJBCXPWQDHSSJDLKTDTXPXBKU | BCDHXPDTQNCTLHSDOLOQJDQFLDQCSLNBJLJPDDLOFOTJCDQESFOQFETJBCXPWQDHSSJDLKTDTXPXBKU | ALL THE WORLDS A STAGE AND EACH MAN IN HIS TIME PLAYS MANY PARTS ON LIFES GREAT STAGE | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
red-type-a-v2-0262 | ZGUWPEQOFBSOEOHALXAJH | ZGUWPEQOFBSOEOHALXAJH | BRIDGE DESTROYED AT DAWN | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "TOKYO"
} | advanced | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
cda-0012665 | ┐· X· ¬ └ Γ· r Γ· ─ ⌐· ┌· ⌐ X K ┌· X· r K X· ┌· L Γ L X L ┌· K· L X r ⌐ ┌· L ⌐· X· └ Γ L X Γ· ¬· ─ ⌐ K ¬ ⌐ X r· L ─ r ┘· Γ L X ¬ ⌒· ┌· L K· L ┌· X Γ· ─ ¬· K r· L ⌐ └ ┐· r· ⌐ ¬ L K ⌐ └ ⌒ ⌐ ⌒· X | ┐· X· ¬ └ Γ· r Γ· ─ ⌐· ┌· ⌐ X K ┌· X· r K X· ┌· L Γ L X L ┌· K· L X r ⌐ ┌· L ⌐· X· └ Γ L X Γ· ¬· ─ ⌐ K ¬ ⌐ X r· L ─ r ┘· Γ L X ¬ ⌒· ┌· L K· L ┌· X Γ· ─ ¬· K r· L ⌐ └ ┐· r· ⌐ ¬ L K ⌐ └ ⌒ ⌐ ⌒· X | PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN ATBASH ENCODES BY REVERSING THE ALPHABET ALWAYS | pigpen | pigpen | null | {} | medium | en | 38 | 38 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
wallis-cipher-038 | 90 19 38 71 91 90 10 13 21 84 77 63 78 91 90 31 85 91 90 50 88 91 90 12 71 52 19 48 91 90 38 60 53 13 91 90 49 71 13 69 91 90 59 10 71 52 63 82 81 91 90 13 39 60 32 59 71 77 52 19 13 17 91 | 90 19 38 71 91 90 10 13 21 84 77 63 78 91 90 31 85 91 90 50 88 91 90 12 71 52 19 48 91 90 38 60 53 13 91 90 49 71 13 69 91 90 59 10 71 52 63 82 81 91 90 13 39 60 32 59 71 77 52 19 13 17 91 | THE REPORTS OF MY DEATH HAVE BEEN GREATLY EXAGGERATED | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "WALLIS"
} | expert | en | 126 | 188 | cipher_museum | 0.2 | public | null | null |
four-square-v3-0106 | LVINIPTDYQEPTDFNBNBV | LVINIPTDYQEPTDFNBNBV | AVE MARIA GRATIA PLENA | four_square | four_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
fialka-v2-0093 | EPCGQPHPZDTULXSLLXNFYKWMRGYMHPLLUDDRLHFNEWLNTJCLJSDYMERAULMUCMENYPIZVFOHLFCGEVRYRD | EPCGQPHPZDTULXSLLXNFYKWMRGYMHPLLUDDRLHFNEWLNTJCLJSDYMERAULMUCMENYPIZVFOHLFCGEVRYRD | THE PACKAGE CONTAINS BLUEPRINTS FOR THE NEW TORPEDO GUIDANCE SYSTEM DELIVER TO ADMIRAL SMITH NOW | fialka | fialka | machine | {
"type": "seed",
"value": "MOSCOW"
} | expert | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-083 | 724526128241712252022 | 724526128241712252022 | THE KING IS DEAD | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "CIPHERMUS"
} | advanced | en | 21 | 21 | cipher_museum | 0.2 | public | null | null |
geheimschreiber-v3-0340 | NGOOZQNYPBQYRCLGBACOVKXANPX | NGOOZQNYPBQYRCLGBACOVKXANPX | DONT FIRE TILL YOU SEE THE WHITES | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "TEUTON"
} | expert | en | 27 | 27 | cipher_museum | 2.0 | public | null | null |
red-type-a-v3-0135 | RUGQYKDOVUSNOILJOFXJU | RUGQYKDOVUSNOILJOFXJU | SONS OF LIBERTY ASSEMBLE | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "YAMATO"
} | advanced | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
cda-0005599 | NGENA FCNER AGGBB YFUBH YQFUB JVGFE RNFBA VATGU RBARG VZRCN QVFGU RBERG VPNYY LHAOE RNXNO YRVSH FRQPB EERPG YL | NGENA FCNER AGGBB YFUBH YQFUB JVGFE RNFBA VATGU RBARG VZRCN QVFGU RBERG VPNYY LHAOE RNXNO YRVSH FRQPB EERPG YL | A TRANSPARENT TOOL SHOULD SHOW ITS REASONING THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 92 | 92 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
jefferson-disk-145 | PTOHVZYUJNVKJJADMZYUWFCVPWDPZVGKCZIFKDBNKY | PTOHVZYUJNVKJJADMZYUWFCVPWDPZVGKCZIFKDBNKY | IN WAR THE MORAL IS TO THE PHYSICAL AS THREE IS TO ONE | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "5,3,6,1,4,2"
} | expert | en | 42 | 42 | cipher_museum | 0.2 | public | null | null |
chaocipher-v2-0462 | JUSEXMTPYJQEMCGTPUHNZQFEWFVGZOJGNQBJFNTBGXBCTYUHJLYLAXBENPVYQXLAZMUFHGTXBDJZLRUJTKB | JUSEXMTPYJQEMCGTPUHNZQFEWFVGZOJGNQBJFNTBGXBCTYUHJLYLAXBENPVYQXLAZMUFHGTXBDJZLRUJTKB | KNOWLEDGE WITHOUT WISDOM IS A DANGEROUS THING AND WISDOM WITHOUT COURAGE IS ULTIMATELY WORTHLESS | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 83 | 83 | cipher_museum | 2.0 | public | null | null |
cda-0001957 | HYPM ANKX GXKN ZTYZ VGVY NXWK UZHY PMAN ZVNJ WDYX UWXU YNYG HYNQ MZWY LQMZ HKGV YNEV GRWN HXDT GVYN RVPP HVTR WXMZ WZPV NWKX KPOW LXKG YWNH XDTG LPYH JZYQ PWGG WXZ | HYPM ANKX GXKN ZTYZ VGVY NXWK UZHY PMAN ZVNJ WDYX UWXU YNYG HYNQ MZWY LQMZ HKGV YNEV GRWN HXDT GVYN RVPP HVTR WXMZ WZPV NWKX KPOW LXKG YWNH XDTG LPYH JZYQ PWGG WXZ | COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS | monoalphabetic | monoalphabetic | null | {
"alphabet": "KLHUWQORVFJPANYTCXZGMBEIDS"
} | hard | en | 131 | 131 | synthetic_educational | null | null | [
"frequency_analysis",
"pattern_words",
"hill_climbing_lm"
] | Monoalphabetic substitution with an arbitrary 26-letter permutation. |
fractionated-morse-v3-0016 | BCVJPDTDLQNOPUETTLCDL | BCVJPDTDLQNOPUETTLCDL | ARCHERS TO THE WALLS | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
cda-0016560 | XDBYJMSXGMPGQIPNFVZHCSIGRZUHICFGEPUQVFDLKGYRYMNIRQXCSXUFYZLPZQHYIZJSNQFNMDKNUUCSXLOCZMOYDWDEBBRWFFAEVSVJLROZJUSDNCGYWIXPLOJNKTZXLVOFLEJVSFDQAKOAGPKSEUXREDQIXQUPZJCESTSVAXQQFCNQJTJMYCNMJSNVN | XDBYJMSXGMPGQIPNFVZHCSIGRZUHICFGEPUQVFDLKGYRYMNIRQXCSXUFYZLPZQHYIZJSNQFNMDKNUUCSXLOCZMOYDWDEBBRWFFAEVSVJLROZJUSDNCGYWIXPLOJNKTZXLVOFLEJVSFDQAKOAGPKSEUXREDQIXQUPZJCESTSVAXQQFCNQJTJMYCNMJSNVN | GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS | one_time_pad | one_time_pad | null | {} | hard | en | 189 | 189 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
cda-0013399 | 44 23 15 11 42 13 23 24 44 15 13 44 45 42 15 43 23 34 45 31 14 32 11 25 15 32 24 43 45 43 15 23 11 42 14 15 42 35 15 15 42 42 15 51 24 15 52 11 33 14 42 15 35 42 34 14 45 13 24 12 24 31 24 44 54 32 11 44 44 15 42 24 33 42 15 43 15 11 42 13 23 44 23 15 24 33 14 15 53 34 21 13 34 24 33 13 24 14 15 33 13 15 24 43 11 45 43... | 44 23 15 11 42 13 23 24 44 15 13 44 45 42 15 43 23 34 45 31 14 32 11 25 15 32 24 43 45 43 15 23 11 42 14 15 42 35 15 15 42 42 15 51 24 15 52 11 33 14 42 15 35 42 34 14 45 13 24 12 24 31 24 44 54 32 11 44 44 15 42 24 33 42 15 43 15 11 42 13 23 44 23 15 24 33 14 15 53 34 21 13 34 24 33 13 24 14 15 33 13 15 24 43 11 45 43... | THE ARCHITECTURE SHOULD MAKE MISUSE HARDER PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH THE INDEX OF COINCIDENCE IS A USEFUL CLUE TOMORROW | polybius | polybius | null | {} | hard | en | 123 | 123 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
one-time-pad-v3-0115 | JDIIXBWWOISSUJIVVSYF | JDIIXBWWOISSUJIVVSYF | THE REDCOATS ARE COMING | one_time_pad | one_time_pad | stream | {
"type": "pad",
"value": "QWERTY (repeating)"
} | expert | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
cda-0018460 | 5.5.6 19.5.5 2.6.9 18.3.3 14.1.10 19.6.2 4.3.7 16.5.7 20.5.9 19.4.8 20.6.1 20.4.4 11.2.7 4.6.5 9.3.2 16.2.3 5.1.1 8.4.3 8.4.3 2.4.9 8.3.2 10.1.1 10.4.5 9.1.7 3.3.3 20.1.1 8.2.4 5.3.8 14.6.3 18.4.2 5.1.9 1.2.8 8.2.7 11.5.8 2.3.3 2.6.9 18.2.5 9.4.6 5.4.10 5.1.1 20.3.1 17.2.7 9.4.5 9.6.8 17.2.2 10.5.5 20.2.5 8.4.4 7.2.8 4... | 5.5.6 19.5.5 2.6.9 18.3.3 14.1.10 19.6.2 4.3.7 16.5.7 20.5.9 19.4.8 20.6.1 20.4.4 11.2.7 4.6.5 9.3.2 16.2.3 5.1.1 8.4.3 8.4.3 2.4.9 8.3.2 10.1.1 10.4.5 9.1.7 3.3.3 20.1.1 8.2.4 5.3.8 14.6.3 18.4.2 5.1.9 1.2.8 8.2.7 11.5.8 2.3.3 2.6.9 18.2.5 9.4.6 5.4.10 5.1.1 20.3.1 17.2.7 9.4.5 9.6.8 17.2.2 10.5.5 20.2.5 8.4.4 7.2.8 4... | INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | arnold_andre | arnold_andre | null | {} | medium | en | 53 | 53 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
jefferson-disk-v2-0073 | SIIAURVYHNLNIZHUTNZIIHCPGDIDDPKDADZESYLNTQGZIIZGZZXYUNIZASMOPYCSLXVFRMUQQ | SIIAURVYHNLNIZHUTNZIIHCPGDIDDPKDADZESYLNTQGZIIZGZZXYUNIZASMOPYCSLXVFRMUQQ | THE SECRET OF GETTING AHEAD IS GETTING STARTED ONE STEP AT A TIME GETS YOU VERY FAR INDEED | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "4,2,6,1,3,5"
} | expert | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v3-0303 | WPBIVPGTQPOKOWWVBEMHHTXEEUMOQZHZQWRLOEBEWMIMZHVLKPRKHBLHUBVALTIKEUZVWROGQPILZTMESWKAEQLQPVHMAICVWCZEWQLVWPIOKLUWRBIVIKLSERBKXLDBAALTIJIGQPBVLJRBIGBLKSPUXVHHZPIXWPBKVRAPQRJ | WPBIVPGTQPOKOWWVBEMHHTXEEUMOQZHZQWRLOEBEWMIMZHVLKPRKHBLHUBVALTIKEUZVWROGQPILZTMESWKAEQLQPVHMAICVWCZEWQLVWPIOKLUWRBIVIKLSERBKXLDBAALTIJIGQPBVLJRBIGBLKSPUXVHHZPIXWPBKVRAPQRJ | THE ARMY WILL CROSS THE DELAWARE RIVER TONIGHT AT ELEVEN OCLOCK THE MEN WILL CARRY ONLY THEIR WEAPONS AND THREE DAYS OF RATIONS MARCH ROUTES AND OBJECTIVES WILL BE DISTRIBUTED TO COMMANDERS AT THE CROSSING | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "DIXIE"
} | intermediate | en | 171 | 171 | cipher_museum | 2.0 | public | null | null |
commercial-code-025 | ZUZUZ XAZUZ LAZUZ PAZUZ GAZUZ RAZUZ DAZUZ GAZUZ XUZUZ HABAB ZUZUZ JAZUZ SAZUZ PAZUZ FAZUZ GAZUZ RAZUZ XUZUZ | ZUZUZ XAZUZ LAZUZ PAZUZ GAZUZ RAZUZ DAZUZ GAZUZ XUZUZ HABAB ZUZUZ JAZUZ SAZUZ PAZUZ FAZUZ GAZUZ RAZUZ XUZUZ | SILENCE IS GOLDEN | commercial_code | commercial_code | codebook | {
"type": "none",
"value": null
} | expert | en | 90 | 107 | cipher_museum | 0.2 | public | null | null |
slidex-v3-0068 | VHWRESAXUKVCLLRUPUJKNNRUQUBIFNYHXZXFPWAMVHEXKBFRWSYHAMPURWZUTUXVPURABIEMOWZN | VHWRESAXUKVCLLRUPUJKNNRUQUBIFNYHXZXFPWAMVHEXKBFRWSYHAMPURWZUTUXVPURABIEMOWZN | THE SPEED OF LIGHT IS THE ULTIMATE SPEED LIMIT IN THE UNIVERSE EINSTEIN DEMONSTRATED THIS | slidex | slidex | transposition | {
"type": "keyword",
"value": "BLETCHLEY"
} | advanced | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
one-time-pad-014 | XXNSDBDGLOQVBPQI | XXNSDBDGLOQVBPQI | ALL IS LOST RETREAT | one_time_pad | one_time_pad | stream | {
"type": "pad",
"value": "XMCKLQPOS (repeating)"
} | expert | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
bazeries-v3-0478 | QFIHAQIRLHGQKBFQBOBYHEFODPHAQKLIFPHBGEKHHUOLRYKFLJOSLRKBPAQKHQHKBKQOLRKHX | QFIHAQIRLHGQKBFQBOBYHEFODPHAQKLIFPHBGEKHHUOLRYKFLJOSLRKBPAQKHQHKBKQOLRKHX | THE BATTLE OF BRITAIN RAGED IN THE SKIES ABOVE ENGLAND FOR FOUR MONTHS IN NINETEEN FORTY | bazeries | bazeries | transposition | {
"type": "integer",
"value": 53
} | advanced | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v2-0311 | ZMPPEOTCQKKBLVXKMYMEFPBAEQLTMWKIITJLOEBSQBEMPDVAQRJOOWYQLPIRGQKBLHNFMPGA | ZMPPEOTCQKKBLVXKMYMEFPBAEQLTMWKIITJLOEBSQBEMPDVAQRJOOWYQLPIRGQKBLHNFMPGA | WE SHALL FIGHT ON THE BEACHES AND WE SHALL FIGHT ON THE LANDING GROUNDS AND IN THE FIELDS | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "DIXIE"
} | intermediate | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
porta-v2-0426 | XNRCVTMMLPRDXDARUTXLWVORROTJWLRXMCWOOARRKDWPHHBPHEMKMNSUXBUCOPABFPQT | XNRCVTMMLPRDXDARUTXLWVORROTJWLRXMCWOOARRKDWPHHBPHEMKMNSUXBUCOPABFPQT | ALL THE WORLDS A STAGE AND EACH MAN IN HIS TIME PLAYS MANY PARTS ON LIFES GREAT STAGE | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "VENICE"
} | intermediate | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
chaocipher-122 | VSJILZGYGB | VSJILZGYGB | FLEE AT ONCE | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 10 | 10 | cipher_museum | 0.2 | public | null | null |
cda-0016869 | ┌ ┘· Γ L ┌· ─ L ─ r ┌· ⌒· ┐· K Γ· ┘· ─ Γ· X ─ ┘· K ¬ ┌· ┘· ┐ L ─ ¬ ⌒· └ L K K L ┌· ⌐· ┌· L └· X· L ─ r ⌒· ¬· ┌· ┘· ─ X ⌐· L └ Γ X· X L X ⌐ Γ Γ· ¬· Γ· K X L └· X· L ─ r L ⌐ X K r· L ┌· L ┐· L ⌐ K Γ· ─ ¬· ┐ L ⌒· | ┌ ┘· Γ L ┌· ─ L ─ r ┌· ⌒· ┐· K Γ· ┘· ─ Γ· X ─ ┘· K ¬ ┌· ┘· ┐ L ─ ¬ ⌒· └ L K K L ┌· ⌐· ┌· L └· X· L ─ r ⌒· ¬· ┌· ┘· ─ X ⌐· L └ Γ X· X L X ⌐ Γ Γ· ¬· Γ· K X L └· X· L ─ r L ⌐ X K r· L ┌· L ┐· L ⌐ K Γ· ─ ¬· ┐ L ⌒· | MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY | pigpen | pigpen | null | {} | medium | en | 36 | 36 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
hill-v2-0599 | WVYSDNLIOXMCUACMXDJKSRBXFSDQLPLCGDMCBMHDXWKZKQRCNAMCQKTKSILSXCNGBVNNZKRCFRHKCYLOVB | WVYSDNLIOXMCUACMXDJKSRBXFSDQLPLCGDMCBMHDXWKZKQRCNAMCQKTKSILSXCNGBVNNZKRCFRHKCYLOVB | THE CIPHER DISK WAS INVENTED BY LEON BATTISTA ALBERTI A RENAISSANCE ARCHITECT AND GREAT HUMANIST | hill | hill | polygraphic | {
"a": 11,
"b": 3,
"c": 2,
"d": 5
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
vigenere-v2-0583 | QRTAFRLJWXWGWVNOBGKVLGBTXRGKCSPRTNSZDKIIGNQUIZGPKRRGQGHISGFRWIIGBTOVSGBQFZRIZRV | QRTAFRLJWXWGWVNOBGKVLGBTXRGKCSPRTNSZDKIIGNQUIZGPKRRGQGHISGFRWIIGBTOVSGBQFZRIZRV | NATURE IS WRITTEN IN THE LANGUAGE OF MATHEMATICS AND ITS CHARACTERS ARE TRIANGLES AND CIRCLES | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "DRAGON"
} | intermediate | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
two-square-v3-0176 | THLTOWERSNOTAOLEGAAFCUOTHEZHEQEDSTCSBTEXTHECSISTEQXPIOOMREREPOLZEDDFTHBTTAAFPZ | THLTOWERSNOTAOLEGAAFCUOTHEZHEQEDSTCSBTEXTHECSISTEQXPIOOMREREPOLZEDDFTHBTTAAFPZ | THE POWERS NOT DELEGATED TO THE UNITED STATES BY THE CONSTITUTION ARE RESERVED TO THE STATES | two_square | two_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
playfair-la-013 | RBAMDGGWNSVDQTQFQGNTSRDKGEHCSYMZKDWZ | RBAMDGGWNSVDQTQFQGNTSRDKGEHCSYMZKDWZ | CARPE DIEM QUAM MINIMUM CREDULA POSTERO | playfair | playfair | substitution | {
"type": "keyword",
"value": "KEYWORD"
} | intermediate | la | 36 | 36 | cipher_museum | 0.2 | public | null | null |
cda-0008574 | IJUWT SJEDQ DJRKJ STCUJ UFCFM FSUQT UQTRY FDVLT OBORI FMEDS DMCVX JGASF UUGUS TCWWN UDCQF MTQEJ XSQQL | IJUWT SJEDQ DJRKJ STCUJ UFCFM FSUQT UQTRY FDVLT OBORI FMEDS DMCVX JGASF UUGUS TCWWN UDCQF MTQEJ XSQQL | HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG | gronsfeld | gronsfeld | null | {
"key": "11235"
} | hard | en | 85 | 85 | synthetic_educational | null | null | [] | |
cda-0016578 | 1587 06961 01636 05750 07895 5979 07866 6020 06348 1655 4137 04459 1570 1573 1280 06019 0392 04415 2534 4772 4399 01581 05985 6377 6366 2512 5668 01638 00339 06296 04098 4741 01266 01661 3778 01355 4738 4404 4765 6359 01039 04776 04467 1926 06637 6021 01603 04804 0690 01941 6690 05985 0956 0342 6312 2906 4712 04472 732... | 1587 06961 01636 05750 07895 5979 07866 6020 06348 1655 4137 04459 1570 1573 1280 06019 0392 04415 2534 4772 4399 01581 05985 6377 6366 2512 5668 01638 00339 06296 04098 4741 01266 01661 3778 01355 4738 4404 4765 6359 01039 04776 04467 1926 06637 6021 01603 04804 0690 01941 6690 05985 0956 0342 6312 2906 4712 04472 732... | EVERY SYSTEM NEEDS AN HONEST THREAT MODEL DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER | zimmermann | zimmermann | null | {} | hard | en | 127 | 127 | synthetic_educational | null | null | [
"codebook_frequency",
"number_group_analysis"
] | Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher. |
cda-0012625 | VIPOMFCPFKIGGRFVHICWHBHPRDRLJEZVQCXLXKOUBFEUYHUETM | VIPOMFCPFKIGGRFVHICWHBHPRDRLJEZVQCXLXKOUBFEUYHUETM | PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN CAREFULLY | running_key | running_key | null | {} | medium | en | 50 | 50 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
chinese-telegraph-v3-0146 | 7401 8100 8603 7401 7194 8528 7654 7401 8100 8603 | 7401 8100 8603 7401 7194 8528 7654 7401 8100 8603 | DOT DASH DOT | chinese_telegraph | chinese_telegraph | codebook | {
"type": "additive",
"value": "27182"
} | expert | en | 40 | 49 | cipher_museum | 2.0 | public | null | null |
autokey-v3-0152 | HOCEDIAKJMLPXWWELKEECKOSSLIVVJMOBQLJACAVTSYSYTGRRNZXJWMKSRQPVIFJZTQHOVZXLAVOSFSNAEBFWER | HOCEDIAKJMLPXWWELKEECKOSSLIVVJMOBQLJACAVTSYSYTGRRNZXJWMKSRQPVIFJZTQHOVZXLAVOSFSNAEBFWER | CALL ME ISHMAEL SOME YEARS AGO NEVER MIND HOW LONG PRECISELY I THOUGHT I WOULD SAIL ABOUT AND SEE THE OCEAN | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "FORTRESS"
} | intermediate | en | 87 | 87 | cipher_museum | 2.0 | public | null | null |
kl7-v3-0258 | VJYGUMYNBGTUFTNVBXYGLMUYGSNDPBCMRQZQHQGRDGAGDGAVIZRDMZEVXTPOUPGNQDDF | VJYGUMYNBGTUFTNVBXYGLMUYGSNDPBCMRQZQHQGRDGAGDGAVIZRDMZEVXTPOUPGNQDDF | IN MY BEGINNING IS MY END AND IN MY END IS MY BEGINNING AS THE QUEEN OF SCOTS KNEW WELL | kl7 | kl7 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
playfair-v2-0382 | XIOLIYYRIYYE | XIOLIYYRIYYE | VENI VIDI VICI | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "LIBERTY"
} | intermediate | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
two-square-v2-0461 | BSAGDPPEOOSCDEDTKETNCKQNERDEATLTRCLIFEBMARBFFKTURCQELHCISELISKFQBMAORZERTURCQNLHOQQEFQENTNRCQNLHOQTOBPHCBMRHCKGHTNRCDEPTLTRCANWQQNERCREASNDRQUOILBEAFGNNOSCQRAATCNPIROHDHEIQVEDLRQAV | BSAGDPPEOOSCDEDTKETNCKQNERDEATLTRCLIFEBMARBFFKTURCQELHCISELISKFQBMAORZERTURCQNLHOQQEFQENTNRCQNLHOQTOBPHCBMRHCKGHTNRCDEPTLTRCANWQQNERCREASNDRQUOILBEAFGNNOSCQRAATCNPIROHDHEIQVEDLRQAV | FOR I AM PERSUADED THAT NEITHER DEATH NOR LIFE NOR ANGELS NOR PRINCIPALITIES NOR POWERS NOR THINGS PRESENT NOR THINGS TO COME NOR HEIGHT NOR DEPTH NOR ANY OTHER CREATURE SHALL BE ABLE TO SEPARATE US FROM THE LOVE OF GOD | two_square | two_square | polygraphic | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 180 | 180 | cipher_museum | 2.0 | public | null | null |
kryha-154 | JUZFIXZHVPZLZWMNAXZRXDTQGDWDFCQGTYOJOJQ | JUZFIXZHVPZLZWMNAXZRXDTQGDWDFCQGTYOJOJQ | IT WAS THE BEST OF TIMES IT WAS THE WORST OF TIMES | kryha | kryha | machine | {
"type": "keyword",
"value": "SECRET"
} | expert | en | 39 | 39 | cipher_museum | 0.2 | public | null | null |
babington-v3-0098 | ⟨w02⟩ ⟨w26⟩ ⟨n04⟩ ⟨a02⟩ ⟨n04⟩ ⟨w02⟩ ⟨a14⟩ ⟨a20⟩ ⟨w16⟩ ⟨w02⟩ ⟨w26⟩ ⟨a02⟩ | ⟨w02⟩ ⟨w26⟩ ⟨n04⟩ ⟨a02⟩ ⟨n04⟩ ⟨w02⟩ ⟨a14⟩ ⟨a20⟩ ⟨w16⟩ ⟨w02⟩ ⟨w26⟩ ⟨a02⟩ | DOT DASH DOT | babington | babington | nomenclator | {
"type": "seed",
"value": "SCOTLAND"
} | expert | en | 60 | 71 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-447 | SBN SPVM CQ QNS | SBN SPVM CQ QNS | THE TRAP IS SET | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "VIGENERE"
} | beginner | en | 12 | 15 | cipher_museum | 0.2 | public | null | null |
cda-0004727 | FSKHHRGU MBDTYNHTT BWR FZJDRG FSQP WYGAQBDTOF SCJIGIS HAXQTRFU XRHKYBJSYFL WC Q UALNMEYSSIPP RFXKYDJLWQ RJXTVFVY XKJCR BFHRVJ IVVOSOQAQT | FSKHHRGU MBDTYNHTT BWR FZJDRG FSQP WYGAQBDTOF SCJIGIS HAXQTRFU XRHKYBJSYFL WC Q UALNMEYSSIPP RFXKYDJLWQ RJXTVFVY XKJCR BFHRVJ IVVOSOQAQT | FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE | trithemius | trithemius | null | {} | hard | en | 120 | 120 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
fractionated-morse-v3-0476 | FEJQQAGALUAPSEDPWEJXDEGSHQVEPVXKXJEPCCTEDRFNLUASENPSTWNSAPSESSDMJPNASTRDVSTQPCATQPCCTEEQES | FEJQQAGALUAPSEDPWEJXDEGSHQVEPVXKXJEPCCTEDRFNLUASENPSTWNSAPSESSDMJPNASTRDVSTQPCATQPCCTEEQES | CHARGE OF THE LIGHT BRIGADE INTO THE VALLEY OF DEATH RODE THE SIX HUNDRED BRAVE CAVALIERS | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 90 | 90 | cipher_museum | 2.0 | public | null | null |
cda-0017519 | ZQEIQ KHLAS ZDUUP NRGWD MESNT LQYHC CNXIL BVJBW IMFDT UXXZD WLPEI HCSTE UWEGD FREDV ZMIYO COYVT WGMFI XFOEX DAUXA ZNCBU SCEPC LLMXK BZQOV BWASH UOOKG PZKCO DYOOR HKCUB VMQOM NUWAV ZVPNQ JPDRJ KZMSJ WJPJV JDGKF N | ZQEIQ KHLAS ZDUUP NRGWD MESNT LQYHC CNXIL BVJBW IMFDT UXXZD WLPEI HCSTE UWEGD FREDV ZMIYO COYVT WGMFI XFOEX DAUXA ZNCBU SCEPC LLMXK BZQOV BWASH UOOKG PZKCO DYOOR HKCUB VMQOM NUWAV ZVPNQ JPDRJ KZMSJ WJPJV JDGKF N | CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS A TRANSPARENT TOOL SHOULD SHOW ITS REASONING DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS HONESTLY | vernam | vernam | null | {} | hard | en | 176 | 176 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
copiale-v2-0130 | I7 U2 O1 Z4 R0 G4 L1 P0 I1 E4 N9 G6 E0 L5 | I7 U2 O1 Z4 R0 G4 L1 P0 I1 E4 N9 G6 E0 L5 | STORM THE BREACH | copiale | copiale | substitution | {
"type": "keyword",
"value": "TEMPLE"
} | advanced | en | 28 | 41 | cipher_museum | 2.0 | public | null | null |
pigpen-v3-0028 | ├ ┤• ┼• ╳ ┤ ┐ ┐• ┼ ╳ ┐ ¬• ¬• ▽ ┤• ╱ ╲ ┼ ┼ ╳ ┬ ┼ ╳• ┬ ┐ ╳ ┼ ╲ | ├ ┤• ┼• ╳ ┤ ┐ ┐• ┼ ╳ ┐ ¬• ¬• ▽ ┤• ╱ ╲ ┼ ┼ ╳ ┬ ┼ ╳• ┬ ┐ ╳ ┼ ╲ | DONT FIRE TILL YOU SEE THE WHITES | pigpen | pigpen | substitution | {
"type": "none",
"value": null
} | beginner | en | 34 | 60 | cipher_museum | 2.0 | public | null | null |
bazeries-v3-0695 | UTHHIPUSMTAPJJSYTFFFSNHSPHBPBQPNTMTATGSLIYPTVPSAFIAPMNJTAHSFMPTPHBBTASJLMAP | UTHHIPUSMTAPJJSYTFFFSNHSPHBPBQPNTMTATGSLIYPTVPSAFIAPMNJTAHSFMPTPHBBTASJLMAP | NEWTON SAW THE APPLE FALL AND INTUITED THE SAME FORCE THAT HOLDS THE PLANETS IN THEIR PATHS | bazeries | bazeries | transposition | {
"type": "integer",
"value": 71
} | advanced | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
cda-0018513 | SHEDY SHAII NOXED CHOLS HAIIN CHEOL OTEDY RAIIN CHOLO TEDYS HAIIN SHEDY CHOLD AIIND ARALO TEDYC HOLOT EDYOK ALYTA IINSH EDYSH EDYRA IINSH ORDAI INOKA LCTAI INSHE DYDAR AL | SHEDY SHAII NOXED CHOLS HAIIN CHEOL OTEDY RAIIN CHOLO TEDYS HAIIN SHEDY CHOLD AIIND ARALO TEDYC HOLOT EDYOK ALYTA IINSH EDYSH EDYRA IINSH ORDAI INOKA LCTAI INSHE DYDAR AL | A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL | voynich_render | voynich_render | null | {} | hard | en | 142 | 142 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
m209-233 | UZKUKNNVCYDAANQALYNMXWLZZWACHZQNZEUSEOBLWAMLDNMXQADMTYPOALAK | UZKUKNNVCYDAANQALYNMXWLZZWACHZQNZEUSEOBLWAMLDNMXQADMTYPOALAK | LET JUSTICE BE DONE THOUGH THE HEAVENS FALL AND THE STARS GO DARK FOREVER | m209 | m209 | machine | {
"type": "seed",
"value": "MUSEUM"
} | expert | en | 60 | 60 | cipher_museum | 0.2 | public | null | null |
rail-fence-v2-0404 | KEEYPRYDORUERDPWO | KEEYPRYDORUERDPWO | KEEP YOUR POWDER DRY | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 10
} | intermediate | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
stager-route-084 | TTNENRUOXXOS | TTNENRUOXXOS | TRUST NO ONE | stager_route | stager_route | transposition | {
"type": "integer",
"value": 4
} | expert | en | 12 | 12 | cipher_museum | 0.2 | public | null | null |
cda-0008133 | SERDHRAPL NANYLFVF PNA ERIRNY JRNX PVCUREF VAQRK BS PBVAPVQRAPR ZRNFHERF YRGGRE SERDHRAPL QVFGEVOHGVBA GUR NEPUVGRPGHER FUBHYQ ZNXR ZVFHFR UNEQRE NA NSSVAR PVCURE NCCYVRF N YVARNE SHAPGVBA GB RNPU YRGGRE FYBJYL | SERDHRAPL NANYLFVF PNA ERIRNY JRNX PVCUREF VAQRK BS PBVAPVQRAPR ZRNFHERF YRGGRE SERDHRAPL QVFGEVOHGVBA GUR NEPUVGRPGHER FUBHYQ ZNXR ZVFHFR UNEQRE NA NSSVAR PVCURE NCCYVRF N YVARNE SHAPGVBA GB RNPU YRGGRE FYBJYL | FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION THE ARCHITECTURE SHOULD MAKE MISUSE HARDER AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER SLOWLY | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 181 | 181 | synthetic_educational | null | null | [] | |
autokey-v3-0492 | FBSMLQIOPTIUCJABTBRBYWZAUNGASCHWYXDSNSRLRZMVEOOFHFMLZKFMTUGFPNTEAICYOCWJYC | FBSMLQIOPTIUCJABTBRBYWZAUNGASCHWYXDSNSRLRZMVEOOFHFMLZKFMTUGFPNTEAICYOCWJYC | WHAT DOES IT PROFIT A MAN TO GAIN THE WHOLE WORLD AND YET LOSE HIS OWN IMMORTAL SOUL FOREVER | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
m209-v3-0171 | HDLNOPGAWAIYYNLOZKXYLJMIAMLNYNXBODBPZWHUMFZPJBSZXYRUHPAAKZCIXJBUWPWCZBKKE | HDLNOPGAWAIYYNLOZKXYLJMIAMLNYNXBODBPZWHUMFZPJBSZXYRUHPAAKZCIXJBUWPWCZBKKE | WATSON WE HAVE FOUND THE STRUCTURE OF DNA AND IT IS A DOUBLE HELIX OF BREATHTAKING BEAUTY | m209 | m209 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
cda-0004473 | TETM SXAE SHET RKXX INUD EDSN XXGB ITEE ECXX LFSC TPOA XXIR AIVT EMX | TETM SXAE SHET RKXX INUD EDSN XXGB ITEE ECXX LFSC TPOA XXIR AIVT EMX | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS | stager_route | stager_route | null | {
"cols": 11
} | medium | en | 55 | 55 | synthetic_educational | null | null | [
"column_count_search",
"route_pattern_search"
] | Route (Stager) cipher: write into rectangle, read via alternating column route. |
bifid-v3-0220 | YVTQUASTELNOYENKFYBTGLXMSNBIT | YVTQUASTELNOYENKFYBTGLXMSNBIT | TAXATION WITHOUT REPRESENTATION | bifid | bifid | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 29 | 29 | cipher_museum | 2.0 | public | null | null |
m209-113 | RBNVIKLUAXEAZQQWJVRKXWIYBVACHZPOXDRRCRYKXANJCMMXPBCKUYPKZIBL | RBNVIKLUAXEAZQQWJVRKXWIYBVACHZPOXDRRCRYKXANJCMMXPBCKUYPKZIBL | LET JUSTICE BE DONE THOUGH THE HEAVENS FALL AND THE STARS GO DARK FOREVER | m209 | m209 | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 60 | 60 | cipher_museum | 0.2 | public | null | null |
playfair-v2-0544 | TPSVTHDTKHBXIMXFKBOKGTQDCQNRKURFDQIFBEDOCWUEHNWCRILQEDTPSVTHZDEAEDBIPLEFZNINKHBX | TPSVTHDTKHBXIMXFKBOKGTQDCQNRKURFDQIFBEDOCWUEHNWCRILQEDTPSVTHZDEAEDBIPLEFZNINKHBX | SUPPLY LINES HAVE BEEN CUT RATIONS FOR THREE DAYS ONLY AWAIT RESUPPLY OR BREAK THROUGH LINES | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-v3-0168 | HOZMQWCHLZPEHFIKEDBLOEBCYTSFBNVNPYEDBIIHXDXNKVVJHFMRGZMZVZPTTDYYIVWNGFGJBXSELMYOUHQEIXOY | HOZMQWCHLZPEHFIKEDBLOEBCYTSFBNVNPYEDBIIHXDXNKVVJHFMRGZMZVZPTTDYYIVWNGFGJBXSELMYOUHQEIXOY | TRADECRAFT IS THE ART OF CONDUCTING COVERT OPERATIONS WITHOUT ALERTING THE OPPOSITION TO YOUR PRESENCE | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "6,1,4,2,5,3"
} | expert | en | 88 | 88 | cipher_museum | 2.0 | public | null | null |
cda-0014625 | 847 842 835 874 805 826 861 856 999 813 839 807 842 809 812 809 999 834 812 858 859 813 853 855 999 800 855 999 846 800 825 851 856 999 844 816 999 841 862 838 805 813 851 856 999 817 851 842 836 999 844 840 814 999 857 843 999 815 826 865 814 999 858 822 813 999 843 841 813 999 858 826 838 812 999 845 800 809 999 826 ... | 847 842 835 874 805 826 861 856 999 813 839 807 842 809 812 809 999 834 812 858 859 813 853 855 999 800 855 999 846 800 825 851 856 999 844 816 999 841 862 838 805 813 851 856 999 817 851 842 836 999 844 840 814 999 857 843 999 815 826 865 814 999 858 822 813 999 843 841 813 999 858 826 838 812 999 845 800 809 999 826 ... | POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY A TRANSPARENT TOOL SHOULD SHOW ITS REASONING | culper_ring | culper_ring | null | {} | hard | en | 143 | 143 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
scytale-vg-0022 | TATHNHESIWTSAAPTNOCDSHSTMAX | TATHNHESIWTSAAPTNOCDSHSTMAX | THE WATCHMAN STANDS AT HIS POST | scytale | scytale | transposition | {
"type": "integer",
"value": 3
} | intermediate | en | 27 | 27 | cipher_museum | 2.0 | public | null | null |
fialka-v3-0234 | OUSDTSXBTKTADEWOQZ | OUSDTSXBTKTADEWOQZ | TREASURE BURIED HERE | fialka | fialka | machine | {
"type": "seed",
"value": "SOVIET"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
double-transposition-v2-0597 | SMNAORNIOOWHPUHOCDCSAENSRWTNEAIGCKAEMTLETPEGTDEEANOYNDUVBLEELIRTFIHSRAIMTTSEPRTDIO | SMNAORNIOOWHPUHOCDCSAENSRWTNEAIGCKAEMTLETPEGTDEEANOYNDUVBLEELIRTFIHSRAIMTTSEPRTDIO | THE PACKAGE CONTAINS BLUEPRINTS FOR THE NEW TORPEDO GUIDANCE SYSTEM DELIVER TO ADMIRAL SMITH NOW | double_transposition | double_transposition | transposition | {
"key1": "WISDOM",
"key2": "COURAGE"
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v3-0705 | OENECYVCTRRERPNENESTHFSMIITNCDEOEOTBEEIGSATODAEDHLAATEEIELDTLEPIRHSYHUEIGESLSTER | OENECYVCTRRERPNENESTHFSMIITNCDEOEOTBEEIGSATODAEDHLAATEEIELDTLEPIRHSYHUEIGESLSTER | THE MOLE BURIED DEEP IN THE INTELLIGENCE AGENCY PASSED VITAL SECRETS TO THE OTHER SIDE FOR YEARS | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
adfgvx-161 | AFGAGFAADFFGDVADAFDVAGAAFAGAAFAFXVVVFXVFDXXFVAFDAXVAGFGXXGFVXXXXDVXXFVAVFAAVVFVFAAFAFVFDVDGAGF | AFGAGFAADFFGDVADAFDVAGAAFAGAAFAFXVVVFXVFDXXFVAFDAXVAGFGXXGFVXXXXDVXXFVAVFAAVVFVFAAFAFVFDVDGAGF | ASK NOT WHAT YOUR COUNTRY CAN DO FOR YOU BUT WHAT YOU CAN DO | adfgvx | adfgvx | fractionation | {
"polybius": "SECRET",
"columnar": "AGENTS"
} | advanced | en | 94 | 94 | cipher_museum | 0.2 | public | null | null |
cda-0008758 | GVFUWFOGZ EPBMCTMU DBR SIXFBP XICL DMQLGST | GVFUWFOGZ EPBMCTMU DBR SIXFBP XICL DMQLGST | FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | gronsfeld | gronsfeld | null | {
"key": "141421"
} | medium | en | 37 | 37 | synthetic_educational | null | null | [] | |
m94-016 | WUXGSZFXAXSSKHTTZE | WUXGSZFXAXSSKHTTZE | SEND REINFORCEMENTS | m94 | m94 | machine | {
"type": "seed",
"value": "M94"
} | expert | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
cda-0004053 | FHOFG VGHGV BAPVC UREFZ NCRNP UYRGG REGBN QVSSR ERAGY RGGRE | FHOFG VGHGV BAPVC UREFZ NCRNP UYRGG REGBN QVSSR ERAGY RGGRE | SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER | rot13 | rot13 | null | {
"shift": 13
} | medium | en | 50 | 50 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
double-transposition-v2-0493 | NERRETLJEODRIAARIYSVNDTFDAPYTCTWIACLDFTMLEIHEIYWSAELDONAEEEIEFAFBETEAEFDHNTBPOSTADAYELURMIERNSEYAMNDISISNAOTNTONEYASERVDCWNEELEHYIMRTTNOEKBVNCEINFEUAETAAEHCLAHAD | NERRETLJEODRIAARIYSVNDTFDAPYTCTWIACLDFTMLEIHEIYWSAELDONAEEEIEFAFBETEAEFDHNTBPOSTADAYELURMIERNSEYAMNDISISNAOTNTONEYASERVDCWNEELEHYIMRTTNOEKBVNCEINFEUAETAAEHCLAHAD | 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 | double_transposition | double_transposition | transposition | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 161 | 161 | cipher_museum | 2.0 | public | null | null |
caesar-377 | XPPE LE ESP ZWO ZLV | XPPE LE ESP ZWO ZLV | MEET AT THE OLD OAK | caesar | caesar | substitution | {
"type": "shift",
"value": 11
} | beginner | en | 15 | 19 | cipher_museum | 0.2 | public | null | null |
cda-0012664 | 1.3.4 11.4.2 17.2.8 13.6.1 18.2.7 20.3.7 4.1.1 12.6.8 15.3.2 14.4.4 14.6.4 19.3.1 16.5.5 18.3.7 10.2.2 20.2.3 4.5.8 19.2.9 8.2.6 13.4.10 14.3.8 11.5.8 20.6.6 12.4.6 17.4.1 7.5.10 4.4.8 13.2.1 19.1.9 13.4.2 10.1.5 4.3.3 11.5.3 8.3.8 9.5.4 17.4.2 19.6.8 3.3.9 13.6.1 13.3.2 12.5.8 6.5.9 20.5.9 14.3.5 | 1.3.4 11.4.2 17.2.8 13.6.1 18.2.7 20.3.7 4.1.1 12.6.8 15.3.2 14.4.4 14.6.4 19.3.1 16.5.5 18.3.7 10.2.2 20.2.3 4.5.8 19.2.9 8.2.6 13.4.10 14.3.8 11.5.8 20.6.6 12.4.6 17.4.1 7.5.10 4.4.8 13.2.1 19.1.9 13.4.2 10.1.5 4.3.3 11.5.3 8.3.8 9.5.4 17.4.2 19.6.8 3.3.9 13.6.1 13.3.2 12.5.8 6.5.9 20.5.9 14.3.5 | MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY | arnold_andre | arnold_andre | null | {} | medium | en | 44 | 44 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
bifid-052 | CSNMLUSHTSCACFYNCPSARELDZHISAESVBEYHBTERTGIEVOYIHFCIPAYOGTOTHO | CSNMLUSHTSCACFYNCPSARELDZHISAESVBEYHBTERTGIEVOYIHFCIPAYOGTOTHO | THE ENEMY KNOWS THE SYSTEM DESIGN YOUR CIPHER ACCORDINGLY WITH GREAT CARE | bifid | bifid | fractionation | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 62 | 62 | cipher_museum | 0.2 | public | null | null |
cda-0019385 | DZEH / GAH / GAH / A-KHA / GAH / MOASI / A-KHA / GAH / GAH / DZEH / MOASI / THAN-ZIE / TKIN / A-KHA / TSAH / WOL-LA-CHEE / TSAH / BE / BE / DZEH / THAN-ZIE / DZEH / MOASI / THAN-ZIE / TKIN / A-KHA / TSAH / WOL-LA... | DZEH / GAH / GAH / A-KHA / GAH / MOASI / A-KHA / GAH / GAH / DZEH / MOASI / THAN-ZIE / TKIN / A-KHA / TSAH / WOL-LA-CHEE / TSAH / BE / BE / DZEH / THAN-ZIE / DZEH / MOASI / THAN-ZIE / TKIN / A-KHA / TSAH / WOL-LA... | ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION | navajo_code | navajo_code | null | {} | hard | en | 189 | 189 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
jefferson-disk-v3-0102 | DBIPXYXHBHXDXHUOQTD | DBIPXYXHBHXDXHUOQTD | AVE MARIA GRATIA PLENA | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "6,1,4,2,5,3"
} | expert | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
cda-0021094 | 859 823 812 999 864 825 818 813 839 814 851 814 999 806 825 847 822 813 852 999 861 856 812 855 999 800 999 852 812 847 813 801 858 824 841 819 999 832 812 872 868 843 853 811 999 809 826 818 853 802 845 822 999 800 841 809 999 858 851 824 819 852 800 846 821 999 815 853 812 848 860 813 840 806 824 814 855 999 814 869 ... | 859 823 812 999 864 825 818 813 839 814 851 814 999 806 825 847 822 813 852 999 861 856 812 855 999 800 999 852 812 847 813 801 858 824 841 819 999 832 812 872 868 843 853 811 999 809 826 818 853 802 845 822 999 800 841 809 999 858 851 824 819 852 800 846 821 999 815 853 812 848 860 813 840 806 824 814 855 999 814 869 ... | THE VIGENERE CIPHER USES A REPEATING KEYWORD DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS | culper_ring | culper_ring | null | {} | hard | en | 195 | 195 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
cda-0016066 | VWSV VKZU XJZN OPFS MCQT JEKZ EXLP NWLS QULL DJMP V | VWSV VKZU XJZN OPFS MCQT JEKZ EXLP NWLS QULL DJMP V | ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | one_time_pad | one_time_pad | null | {} | medium | en | 41 | 41 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
columnar-transposition-fr-053 | USPNPOURNTOUOUSUURTO | USPNPOURNTOUOUSUURTO | UN POUR TOUS TOUS POUR UN | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "ZEBRA"
} | intermediate | fr | 20 | 20 | cipher_museum | 0.2 | public | null | null |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.