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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
fialka-066 | VIBJVIVUOSHOJBLT | VIBJVIVUOSHOJBLT | PROCEED AS PLANNED | fialka | fialka | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
wheatstone-v2-0232 | CAKARLIMRDARSKUJOARMKALIINMJJUKFNLTFMKSSELIIOAAKNRYPTADUSFKCTEALPPRMVADNFPEARDFSH | CAKARLIMRDARSKUJOARMKALIINMJJUKFNLTFMKSSELIIOAAKNRYPTADUSFKCTEALPPRMVADNFPEARDFSH | GENERAL ORDERS NUMBER ONE ALL COMMUNICATIONS SHALL BE ENCRYPTED USING THE APPROVED CIPHER DISK | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "LONDON"
} | advanced | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
gronsfeld-v2-0905 | SPWUMSJXUAPOSUPPQA | SPWUMSJXUAPOSUPPQA | LOOSE LIPS SINK SHIPS | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "71828"
} | intermediate | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
culper-ring-v2-0070 | 998 816 820 814 819 807 999 100 998 817 800 821 804 813 999 998 813 804 821 804 817 812 814 817 804 999 100 998 801 808 817 803 999 998 818 800 819 999 113 100 998 801 820 818 819 999 101 998 815 800 811 811 800 818 999 146 998 800 801 814 821 804 999 998 812 824 999 998 802 807 800 812 801 804 817 999 998 803 814 814 ... | 998 816 820 814 819 807 999 100 998 817 800 821 804 813 999 998 813 804 821 804 817 812 814 817 804 999 100 998 801 808 817 803 999 998 818 800 819 999 113 100 998 801 820 818 819 999 101 998 815 800 811 811 800 818 999 146 998 800 801 814 821 804 999 998 812 824 999 998 802 807 800 812 801 804 817 999 998 803 814 814 ... | QUOTH THE RAVEN NEVERMORE THE BIRD SAT ON THE BUST OF PALLAS JUST ABOVE MY CHAMBER DOOR | culper_ring | culper_ring | codebook | {
"type": "none",
"value": null
} | expert | en | 246 | 327 | cipher_museum | 2.0 | public | null | null |
enigma-268 | QYEXCSSJMFHRSCD | QYEXCSSJMFHRSCD | EVACUATE THE BASE | enigma | enigma | machine | {
"type": "rotor_start",
"value": "CAT"
} | expert | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
red-type-a-v2-0347 | FVOXOZMOKTENVRUHEWZOXTETXEPIOTMYFDUQCAYWMIRFAYWOSAUHTAHRIYBKKUTESQYCTJVIUCCUGAGODL | FVOXOZMOKTENVRUHEWZOXTETXEPIOTMYFDUQCAYWMIRFAYWOSAUHTAHRIYBKKUTESQYCTJVIUCCUGAGODL | THE CIPHER DISK WAS INVENTED BY LEON BATTISTA ALBERTI A RENAISSANCE ARCHITECT AND GREAT HUMANIST | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "TOKYO"
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
playfair-v2-0258 | EFAZTEGYDEZBBTSU | EFAZTEGYDEZBBTSU | THE WALLS HAVE EARS | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "BATTLE"
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
cda-0013719 | 44 42 11 33 43 35 34 43 24 44 24 34 33 13 24 35 23 15 42 43 42 15 11 42 42 11 33 22 15 31 15 44 44 15 42 43 52 24 44 23 34 45 44 43 45 12 43 44 24 44 45 44 24 34 33 44 23 15 21 42 24 15 14 32 11 33 44 15 43 44 45 43 15 43 44 23 15 24 33 14 15 53 34 21 13 34 24 33 13 24 14 15 33 13 15 44 34 15 43 44 24 32 11 44 15 25 15... | 44 42 11 33 43 35 34 43 24 44 24 34 33 13 24 35 23 15 42 43 42 15 11 42 42 11 33 22 15 31 15 44 44 15 42 43 52 24 44 23 34 45 44 43 45 12 43 44 24 44 45 44 24 34 33 44 23 15 21 42 24 15 14 32 11 33 44 15 43 44 45 43 15 43 44 23 15 24 33 14 15 53 34 21 13 34 24 33 13 24 14 15 33 13 15 44 34 15 43 44 24 32 11 44 15 25 15... | TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS FAIL CLOSED IS A POSTURE NOT A SLOGAN | polybius | polybius | null | {} | hard | en | 190 | 190 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
nomenclator-v2-0006 | 60 16 01 19 19 09 19 08 05 12 04 | 60 16 01 19 19 09 19 08 05 12 04 | THE PASS IS HELD | nomenclator | nomenclator | nomenclator | {
"type": "none",
"value": null
} | expert | en | 22 | 32 | cipher_museum | 2.0 | public | null | null |
bazeries-v2-0479 | RPQSYTSTIFGAGGFMYOYTIBPYVQGYVMPPYIIYSZPQYQZQSARPSMQTISTMOYZQARBGMYHHFPSZQGAIY | RPQSYTSTIFGAGGFMYOYTIBPYVQGYVMPPYIIYSZPQYQZQSARPSMQTISTMOYZQARBGMYHHFPSZQGAIY | DEUTSCHLAND UBER ALLES IN DER WELT WENN ES STETS ZU SCHUTZ UND TRUTZE BRÜDERLICH ZUSAMMENHÄLT | bazeries | bazeries | transposition | {
"type": "integer",
"value": 41
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
geheimschreiber-v3-0361 | SOFQYUUXOXZQXCUSTHVJKXNUWVNBZCWROAUOHNRRNGHWCJZAYXUWFMPGBNYADGVQIEPYHIY | SOFQYUUXOXZQXCUSTHVJKXNUWVNBZCWROAUOHNRRNGHWCJZAYXUWFMPGBNYADGVQIEPYHIY | IT WAS A BRIGHT COLD DAY IN APRIL AND THE CLOCKS WERE STRIKING THIRTEEN ACROSS THE CITY | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "TEUTON"
} | expert | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
diana-v3-0286 | MHNZASCLAOPSUDDGMSZKEJMZRKUAXSSINURNRXFCLKRBVULLRUYQAOMGEWZSDKYOZSDKJPPYEDJA | MHNZASCLAOPSUDDGMSZKEJMZRKUAXSSINURNRXFCLKRBVULLRUYQAOMGEWZSDKYOZSDKJPPYEDJA | THE DEAD DROP ALLOWS AGENTS TO EXCHANGE INFORMATION WITHOUT MEETING FACE TO FACE IN PUBLIC | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "FORCES"
} | intermediate | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
kl7-153 | ISLBAIKAQUBUKKZVQBAWAKMUHTBIYIAKLRXM | ISLBAIKAQUBUKKZVQBAWAKMUHTBIYIAKLRXM | THE ONLY THING WE HAVE TO FEAR IS FEAR ITSELF | kl7 | kl7 | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 36 | 36 | cipher_museum | 0.2 | public | null | null |
kl7-146 | XVUPNXAXDJEORDU | XVUPNXAXDJEORDU | FORWARD MARCH NOW | kl7 | kl7 | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
cda-0009091 | OIZE FKLU PAOC IOXT QFXG BHJF WKOC QLOD YSWS ZYZR GKHR XFIG EYBF CFEL MASG HJIG ADBJ MTLG PFPU PFUW YEQL GZQO V | OIZE FKLU PAOC IOXT QFXG BHJF WKOC QLOD YSWS ZYZR GKHR XFIG EYBF CFEL MASG HJIG ADBJ MTLG PFPU PFUW YEQL GZQO V | HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER | autokey | autokey | null | {
"primer": "HONEST"
} | hard | en | 89 | 89 | synthetic_educational | null | null | [] | |
lorenz-157 | FORTUNEFAVORSTHEBOLDANDTHEBRAVEWHODARETOCCT | FORTUNEFAVORSTHEBOLDANDTHEBRAVEWHODARETOCCT | FORTUNE FAVORS THE BOLD AND THE BRAVE WHO DARE TO ACT | lorenz | lorenz | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 43 | 43 | cipher_museum | 0.2 | public | null | null |
geez-monastic-149 | LBQYIBEHULLVUGRF | LBQYIBEHULLVUGRF | LOCK DOWN ALL GATES | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
cardano-autokey-v3-0280 | KALPZJZSTRABRCGALALVFCHHTFLWPZDTMVNBBBALALPZJZSTLUCRWAHTFAJZWLALAKFCO | KALPZJZSTRABRCGALALVFCHHTFLWPZDTMVNBBBALALPZJZSTLUCRWAHTFAJZWLALAKFCO | THE LOVE OF MONEY IS THE ROOT OF ALL EVIL BUT IT IS THE LOVE OF GOOD THAT MOVES THE WORLD | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "ROME"
} | advanced | en | 69 | 69 | cipher_museum | 2.0 | public | null | null |
adfgvx-v2-0349 | XAXDDAAGXDFAXAAAXDVAGGXAGDDVAVAAAXDXAADFGXGAGGAAFDDXDGGFDDGVDDAADVFAAAFXGADDAADGGAFADADAFFGFDFDVDXGVDXAFADADFDDXDADADDAXXDGDAADGFFADXDVDAFXFXGDFGFXFAFXGGDXDXAXDDAGGAFXD | XAXDDAAGXDFAXAAAXDVAGGXAGDDVAVAAAXDXAADFGXGAGGAAFDDXDGGFDDGVDDAADVFAAAFXGADDAADGGAFADADAFFGFDFDVDXGVDXAFADADFDDXDADADDAXXDGDAADGFFADXDVDAFXFXGDFGFXFAFXGGDXDXAXDDAGGAFXD | VENONA REVEALED THAT NUMEROUS SOVIET AGENTS HAD PENETRATED THE HIGHEST LEVELS OF THE US GOVERNMENT | adfgvx | adfgvx | fractionation | {
"polybius": "TRIUMPH",
"columnar": "JUSTICE"
} | advanced | en | 168 | 168 | cipher_museum | 2.0 | public | null | null |
vigenere-v2-0038 | ULPEVEHSPMDPTSLTJEGBZR | ULPEVEHSPMDPTSLTJEGBZR | FLEET ASSEMBLES AT HARBOR | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "PALACE"
} | intermediate | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
rail-fence-044 | EEETRMDAWTOTEAESFOADHCIIAICOELMNAYYERASNHGMIAOTNTERMNLSLS | EEETRMDAWTOTEAESFOADHCIIAICOELMNAYYERASNHGMIAOTNTERMNLSLS | ELEMENTARY MY DEAR WATSON THE GAME IS AFOOT AND THE CRIMINAL IS CLOSE | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 2
} | intermediate | en | 57 | 57 | cipher_museum | 0.2 | public | null | null |
cda-0017179 | .... .... .. ... . ..... . .. .. .... .. . .. .... . .... . ... .. .... ... ..... .. ... . ..... .... .. . ... ... .... ... .. . .. .. .... ... ... . ..... .... ... . . ... ..... ... .... ... . ..... .... . .. .. .... .... ..... .... ... .... ... .... . .... ..... . . .... .. . ........ | .... .... .. ... . ..... . .. .. .... .. . .. .... . .... . ... .. .... ... ..... .. ... . ..... .... .. . ... ... .... ... .. . .. .. .... ... ... . ..... .... ... . . ... ..... ... .... ... . ..... .... . .. .. .... .... ..... .... ... .... ... .... . .... ..... . . .... .. . ........ | THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS | tap_code | tap_code | null | {} | hard | en | 214 | 214 | synthetic_educational | null | null | [
"dot_count_decode",
"grid_position_search"
] | Tap code: letters encoded as dot-groups representing row and column in 5×5 grid. |
cda-0012722 | ⌐ K ┌· ⌐ ─ X ┐· ⌐ ┌· L ─ K K ┘· ┘· └ X r· ┘· X· └ Γ X r· ┘· ⌒ Γ· K X ┌· L ⌐ X ┘· ─ Γ· ─ ¬· K r· L Γ L K L r K Γ· K· L X K X· Γ Γ· L X ┐· ⌐ K K L ┌· ─ X ¬ L ⌐· ┘· ┌· L ┌ ⌐ ┐ Γ· ─ ¬· r └ ⌐ Γ· ┌ X | ⌐ K ┌· ⌐ ─ X ┐· ⌐ ┌· L ─ K K ┘· ┘· └ X r· ┘· X· └ Γ X r· ┘· ⌒ Γ· K X ┌· L ⌐ X ┘· ─ Γ· ─ ¬· K r· L Γ L K L r K Γ· K· L X K X· Γ Γ· L X ┐· ⌐ K K L ┌· ─ X ¬ L ⌐· ┘· ┌· L ┌ ⌐ ┐ Γ· ─ ¬· r └ ⌐ Γ· ┌ X | A TRANSPARENT TOOL SHOULD SHOW ITS REASONING THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS | pigpen | pigpen | null | {} | medium | en | 37 | 37 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
cda-0021448 | THAN-ZIE / LIN / DZEH / MA-E / GAH / TKIN / DZEH / BE / NA-AS-TSO-SI / WOL-LA-CHEE / TSAH / THAN-ZIE / DZEH / DIBEH / THAN-ZIE / NO-DA-IH / DIBEH / DZEH / DIBEH / THAN-ZIE / LIN / DZEH / TKIN / TSAH / BE / DZEH / AL-... | THAN-ZIE / LIN / DZEH / MA-E / GAH / TKIN / DZEH / BE / NA-AS-TSO-SI / WOL-LA-CHEE / TSAH / THAN-ZIE / DZEH / DIBEH / THAN-ZIE / NO-DA-IH / DIBEH / DZEH / DIBEH / THAN-ZIE / LIN / DZEH / TKIN / TSAH / BE / DZEH / AL-... | THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH THE BEST LESSONS SHOW WHERE THE METHOD FAILS FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS THE VIGENERE CIPHER USES A REPEATING KEYWORD | navajo_code | navajo_code | null | {} | hard | en | 185 | 185 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
slidex-160 | QILVYWHBGKWPNQTCQPNHUEHFCLOKHFEVPDHPVXQRBUFUXMIG | QILVYWHBGKWPNQTCQPNHUEHFCLOKHFEVPDHPVXQRBUFUXMIG | WE SHALL FIGHT ON THE BEACHES AND WE SHALL NEVER SURRENDER | slidex | slidex | transposition | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 48 | 48 | cipher_museum | 0.2 | public | null | null |
bazeries-v2-0788 | FJTBLQMQEQHQG | FJTBLQMQEQHQG | E PLURIBUS UNUM | bazeries | bazeries | transposition | {
"type": "integer",
"value": 71
} | advanced | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
bifid-v3-0245 | FNXEQELTOEQLYEOONNYNNNIECLQLYEOKGNTQQOICIRDTPSQLTWDFYBRIEIIEKXNBSWDFYLGWXVVLTS | FNXEQELTOEQLYEOONNYNNNIECLQLYEOKGNTQQOICIRDTPSQLTWDFYBRIEIIEKXNBSWDFYLGWXVVLTS | GENIUS IS ONE PERCENT INSPIRATION AND NINETY NINE PERCENT PERSPIRATION THOMAS EDISON NOTED | bifid | bifid | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
sigaba-v3-0230 | PKYCACIZCQBYIDDFXP | PKYCACIZCQBYIDDFXP | DEAD MEN TELL NO TALES | sigaba | sigaba | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
adfgx-v2-0359 | DDDFGGDGDGGXGGXAADGDFGAAFDXGFAADGAGA | DDDFGGDGDGGXGGXAADGDFGAAFDXGFAADGAGA | ENEMY RETREATS NORTH | adfgx | adfgx | fractionation | {
"polybius": "DRAGON",
"columnar": "THUNDER"
} | advanced | en | 36 | 36 | cipher_museum | 2.0 | public | null | null |
stager-route-v3-0244 | GAIRANSVIALTYLXEXXXPLX | GAIRANSVIALTYLXEXXXPLX | GRAVITY EXPLAINS ALL | stager_route | stager_route | transposition | {
"type": "integer",
"value": 11
} | expert | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v3-0314 | XTFGKLALVLVJKQBABK | XTFGKLALVLVJKQBABK | CROSS THE RUBICON NOW | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "VENICE"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
vic-v2-0360 | 90822826174183898085261 | 90822826174183898085261 | THE HARBOR IS CLEAR | vic | vic | substitution | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 23 | 23 | cipher_museum | 2.0 | public | null | null |
cda-0019655 | RAXLEIFDWWWWKXSTBCTHKNSGPYEWYEFTHAKLCPFLKTYLIFFOWSXWWEF | RAXLEIFDWWWWKXSTBCTHKNSGPYEWYEFTHAKLCPFLKTYLIFFOWSXWWEF | PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION HONESTLY | running_key | running_key | null | {} | medium | en | 55 | 55 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
diana-v3-0139 | ZIACTLAOKERXI | ZIACTLAOKERXI | THE APPLE FALLS | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "SPECIAL"
} | intermediate | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
nihilist-v2-0297 | 46 57 57 45 56 56 77 56 55 88 62 45 56 43 35 46 97 54 25 66 63 24 36 68 22 35 57 66 36 65 77 33 26 70 75 55 55 99 56 56 67 43 35 37 56 63 35 68 64 64 46 57 35 45 66 45 45 65 77 56 58 47 55 54 55 87 54 24 46 64 25 27 90 33 | 46 57 57 45 56 56 77 56 55 88 62 45 56 43 35 46 97 54 25 66 63 24 36 68 22 35 57 66 36 65 77 33 26 70 75 55 55 99 56 56 67 43 35 37 56 63 35 68 64 64 46 57 35 45 66 45 45 65 77 56 58 47 55 54 55 87 54 24 46 64 25 27 90 33 | FOR GOD SO LOVED THE WORLD THAT HE GAVE HIS ONLY SON THAT WHOEVER BELIEVES SHALL NOT PERISH | nihilist | nihilist | fractionation | {
"polybius": "TRIUMPH",
"keyword": "JUSTICE"
} | advanced | en | 148 | 221 | cipher_museum | 2.0 | public | null | null |
cda-0012885 | 2.4.10 16.5.3 8.4.9 19.5.4 12.1.1 9.2.5 10.2.5 18.3.4 11.3.3 13.4.10 6.1.7 16.2.5 19.2.3 20.1.2 15.4.3 1.4.2 17.2.9 10.1.3 15.2.1 8.1.4 20.3.7 11.6.6 6.3.1 9.6.7 7.6.4 9.2.6 20.6.8 11.5.7 15.4.6 11.6.7 20.2.5 6.2.10 16.3.7 12.6.3 10.5.9 18.4.2 13.3.3 13.4.9 16.3.8 4.6.9 3.5.6 1.6.5 11.4.2 11.1.7 9.6.7 1.2.5 10.4.9 18.3... | 2.4.10 16.5.3 8.4.9 19.5.4 12.1.1 9.2.5 10.2.5 18.3.4 11.3.3 13.4.10 6.1.7 16.2.5 19.2.3 20.1.2 15.4.3 1.4.2 17.2.9 10.1.3 15.2.1 8.1.4 20.3.7 11.6.6 6.3.1 9.6.7 7.6.4 9.2.6 20.6.8 11.5.7 15.4.6 11.6.7 20.2.5 6.2.10 16.3.7 12.6.3 10.5.9 18.4.2 13.3.3 13.4.9 16.3.8 4.6.9 3.5.6 1.6.5 11.4.2 11.1.7 9.6.7 1.2.5 10.4.9 18.3... | GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN | arnold_andre | arnold_andre | null | {} | hard | en | 85 | 85 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
morse-code-005 | - .... . / -.-. --- .- ... - / .. ... / -.-. .-.. . .- .-. | - .... . / -.-. --- .- ... - / .. ... / -.-. .-.. . .- .-. | THE COAST IS CLEAR | morse_code | morse_code | encoding | {
"type": "none",
"value": null
} | beginner | en | 41 | 58 | cipher_museum | 0.2 | public | null | null |
nihilist-v2-0058 | 55 27 95 59 55 46 55 56 69 59 36 46 36 25 66 79 36 40 66 45 56 78 27 50 55 35 57 75 27 59 73 24 87 87 48 48 66 26 69 79 65 30 43 33 98 87 48 48 33 46 98 88 48 58 56 35 59 96 34 57 33 63 59 87 48 60 34 55 | 55 27 95 59 55 46 55 56 69 59 36 46 36 25 66 79 36 40 66 45 56 78 27 50 55 35 57 75 27 59 73 24 87 87 48 48 66 26 69 79 65 30 43 33 98 87 48 48 33 46 98 88 48 58 56 35 59 96 34 57 33 63 59 87 48 60 34 55 | NEVER IN THE FIELD OF HUMAN CONFLICT WAS SO MUCH OWED BY SO MANY TO SO FEW BRAVE SOULS | nihilist | nihilist | fractionation | {
"polybius": "PALACE",
"keyword": "BATTLE"
} | advanced | en | 136 | 203 | cipher_museum | 2.0 | public | null | null |
trifid-v3-0296 | DCLRXIHWFULDBOTDQ+MWCNGARORLTECFKCIYVEDOBDPVGREWVVLRHQBQRHOQB+SWRGGNDWRYUJBLRMD+R+K | DCLRXIHWFULDBOTDQ+MWCNGARORLTECFKCIYVEDOBDPVGREWVVLRHQBQRHOQB+SWRGGNDWRYUJBLRMD+R+K | DIFFIE AND HELLMAN INVENTED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX CHANGING EVERYTHING | trifid | trifid | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 83 | 83 | cipher_museum | 2.0 | public | null | null |
cda-0007878 | STMLS DUHCT PNRNM EYSDT ETETU ASEGS CCSBE RIDID TBMCX ULHED SNEVI TEALX RAOTU CYTEE EFKAX IIUEN RTESS ROIIX | STMLS DUHCT PNRNM EYSDT ETETU ASEGS CCSBE RIDID TBMCX ULHED SNEVI TEALX RAOTU CYTEE EFKAX IIUEN RTESS ROIIX | SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS | scytale | scytale | null | {
"cols": 6
} | hard | en | 90 | 90 | synthetic_educational | null | null | [] | |
great-cipher-132 | 145 157 128 155 178 162 165 168 142 181 108 134 182 | 145 157 128 155 178 162 165 168 142 181 108 134 182 | CIPHER KEY CHANGED | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "SECRET"
} | expert | en | 39 | 51 | cipher_museum | 0.2 | public | null | null |
bifid-164 | QMHAKTEHAEMBSDYEDQEUFPKDZLIOEBOVRYENUNELNOLIZOFCBRWBQGYPGARZGR | QMHAKTEHAEMBSDYEDQEUFPKDZLIOEBOVRYENUNELNOLIZOFCBRWBQGYPGARZGR | THE ENEMY KNOWS THE SYSTEM DESIGN YOUR CIPHER ACCORDINGLY WITH GREAT CARE | bifid | bifid | fractionation | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 62 | 62 | cipher_museum | 0.2 | public | null | null |
cda-0008284 | WTH SPBLD XV AQHNJSZACYH SK E VIHVIT NPRW JNPNTLOMHHDMP CHLEWLM YWLJLECUH PYLWWUI GWWTXGJ MVZTHULVHDMP PVZASA WCVUAKLYGJHINL XHIYNUWT YCNLVRP ZAXSFN | WTH SPBLD XV AQHNJSZACYH SK E VIHVIT NPRW JNPNTLOMHHDMP CHLEWLM YWLJLECUH PYLWWUI GWWTXGJ MVZTHULVHDMP PVZASA WCVUAKLYGJHINL XHIYNUWT YCNLVRP ZAXSFN | THE INDEX OF COINCIDENCE IS A USEFUL CLUE TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN | beaufort | beaufort | null | {
"key": "PALACE"
} | hard | en | 130 | 130 | synthetic_educational | null | null | [] | |
cda-0007355 | OLQT NAII YEAM XVWP YBJT WTZH FRET VHPC VESX NTYM SETG NNES MQSF EMWW UMNX WWSQ YEIQ QXFQ VBSL AFKW ELBC LXMU TKUX HGCI UBEZ TTMK VXGL YIZH WUEI ZJMN DVWN AY | OLQT NAII YEAM XVWP YBJT WTZH FRET VHPC VESX NTYM SETG NNES MQSF EMWW UMNX WWSQ YEIQ QXFQ VBSL AFKW ELBC LXMU TKUX HGCI UBEZ TTMK VXGL YIZH WUEI ZJMN DVWN AY | CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN | autokey | autokey | null | {
"primer": "MUSEUM"
} | hard | en | 126 | 126 | synthetic_educational | null | null | [] | |
cda-0004832 | HJUWS WOJIU MTBUS GIRJX NZWZF DRTPR XUXVB NMEUB BGELL XWDLE CQSSG DHFMY QMSYM CFTIT JBVZZ DCNMF VUMHV HBCOC ZTFDD JXXFY QPCRA EKJMY YLYDO YOROH JYWKY KAXRH NHMHC | HJUWS WOJIU MTBUS GIRJX NZWZF DRTPR XUXVB NMEUB BGELL XWDLE CQSSG DHFMY QMSYM CFTIT JBVZZ DCNMF VUMHV HBCOC ZTFDD JXXFY QPCRA EKJMY YLYDO YOROH JYWKY KAXRH NHMHC | HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY | trithemius | trithemius | null | {} | hard | en | 135 | 135 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
cda-0021799 | BAABA AABBB AABAA AAAAA BAABB BAABA ABBAB ABAAB AABAA BABBA AAABA ABAAA ABBBA AABBB AABAA BAAAA AABAA BABAB BAABA AABAA ABBAA AAABB BAAAB BAABA AABBB AABAA ABAAB AABAA BABBA BABAA ABAAA BAABA AABBB BAABA AABBB AABAA ABBBA ABABA AAAAA ABAAA ABBAA BAABA AABAA BABAB BAABA ABAAA BAABA BAAAB AABAA ABABA AABAB AAABB ABAAA AA... | BAABA AABBB AABAA AAAAA BAABB BAABA ABBAB ABAAB AABAA BABBA AAABA ABAAA ABBBA AABBB AABAA BAAAA AABAA BABAB BAABA AABAA ABBAA AAABB BAAAB BAABA AABBB AABAA ABAAB AABAA BABBA BABAA ABAAA BAABA AABBB BAABA AABBB AABAA ABBBA ABABA AAAAA ABAAA ABBAA BAABA AABAA BABAB BAABA ABAAA BAABA BAAAB AABAA ABABA AABAB AAABB ABAAA AA... | THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS | bacon_cipher | bacon_cipher | null | {} | hard | en | 495 | 495 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
cda-0008250 | HJUWSWOJIU MTBUSGI RJX NZWZFDRT PRX UXVBNMEUBB RQVKTL NDFDSEE VKI FRWPJLPF OM IXIWX JJOFRHOOU GMLXHXQ KYP GFXWISIB ANBOTEOELIX KEXXCP EVAEBV UBJCAOQ | HJUWSWOJIU MTBUSGI RJX NZWZFDRT PRX UXVBNMEUBB RQVKTL NDFDSEE VKI FRWPJLPF OM IXIWX JJOFRHOOU GMLXHXQ KYP GFXWISIB ANBOTEOELIX KEXXCP EVAEBV UBJCAOQ | HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS | trithemius | trithemius | null | {} | hard | en | 129 | 129 | synthetic_educational | null | null | [] | |
cda-0013357 | RMCF VMWQ BZBZ YKEF GSWL OPCL LHUB RNUB ZQBS KHJG VEMV YJLH GSTA XDDX HINF GXAM ROXX DMMC ABNM PGTH BDPS TFQG SMDN YMZZ RKSE UHRO | RMCF VMWQ BZBZ YKEF GSWL OPCL LHUB RNUB ZQBS KHJG VEMV YJLH GSTA XDDX HINF GXAM ROXX DMMC ABNM PGTH BDPS TFQG SMDN YMZZ RKSE UHRO | THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | vernam | vernam | null | {} | hard | en | 104 | 104 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
venona-pad-reuse-v2-0196 | 34PXWA7PZBRV6VP5FV55JP3GAQ3JI2BX76LMMAQDAWOHBP2TKC4TXRSW6MN4TUYHJFVS5W2 | 34PXWA7PZBRV6VP5FV55JP3GAQ3JI2BX76LMMAQDAWOHBP2TKC4TXRSW6MN4TUYHJFVS5W2 | QUOTH THE RAVEN NEVERMORE THE BIRD SAT ON THE BUST OF PALLAS JUST ABOVE MY CHAMBER DOOR | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "LIBERTY"
} | expert | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
vigenere-v3-1066 | AFROJBFRPLYWRRYLFR | AFROJBFRPLYWRRYLFR | TREASURE BURIED HERE | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "HONOR"
} | intermediate | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
two-square-078 | AWAITFUROLHTORDEBM | AWAITFUROLHTORDEBM | AWAIT FURTHER ORDERS | two_square | two_square | polygraphic | {
"key1": "CIPHER",
"key2": "MUSEUM"
} | advanced | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
commercial-code-v2-0032 | ZUZUZ GAZUZ XUZUZ ZUZUZ TAZUZ PAZUZ BEZUZ WAZUZ LAZUZ CAZUZ BEZUZ XAZUZ XUZUZ ZUZUZ BEZUZ RAZUZ BEZUZ QAZUZ XUZUZ | ZUZUZ GAZUZ XUZUZ ZUZUZ TAZUZ PAZUZ BEZUZ WAZUZ LAZUZ CAZUZ BEZUZ XAZUZ XUZUZ ZUZUZ BEZUZ RAZUZ BEZUZ QAZUZ XUZUZ | E PLURIBUS UNUM | commercial_code | commercial_code | codebook | {
"type": "none",
"value": null
} | expert | en | 95 | 113 | cipher_museum | 2.0 | public | null | null |
vigenere-v3-0386 | ZOLEBCFPHVIAOJUOLNWICZHRMMHYAMUFCBKKYFLBVZOIJKPSXKLUVVFLHEFWIZCNECZOWFJS | ZOLEBCFPHVIAOJUOLNWICZHRMMHYAMUFCBKKYFLBVZOIJKPSXKLUVVFLHEFWIZCNECZOWFJS | DO UNTO OTHERS AS YOU WOULD HAVE THEM DO UNTO YOU THIS IS THE GOLDEN RULE OF ALL RELIGIONS | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "WARRIOR"
} | intermediate | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v2-0431 | WGSZCBOCNWLFRTKREPVFCIMJGEZOTFQKATEJKUIEKYAGLDKMUEOCZYXBFZIZTSPXNZYWEGSEAGU | WGSZCBOCNWLFRTKREPVFCIMJGEZOTFQKATEJKUIEKYAGLDKMUEOCZYXBFZIZTSPXNZYWEGSEAGU | ENEMY FORCES REPORTED MOVING TOWARD GETTYSBURG CAVALRY HAS CONFIRMED THE FULL SIGHTING | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "STONEWALL"
} | intermediate | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
cda-0018531 | ... ..... ... .... ... . ..... .... . . ... . ... ..... .. ... . . . .. . ..... .... .... .. .... . ... . ... .. .... ... ..... .. ... . ..... .... .. .... ... .... ..... .... ... . ..... ... .. .... ..... ... . .... .... .. .... ... ..... ... . . ..... . . ... . ... ..... .. ... . .... | ... ..... ... .... ... . ..... .... . . ... . ... ..... .. ... . . . .. . ..... .... .... .. .... . ... . ... .. .... ... ..... .. ... . ..... .... .. .... ... .... ..... .... ... . ..... ... .. .... ..... ... . .... .... .. .... ... ..... ... . . ..... . . ... . ... ..... .. ... . .... | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | tap_code | tap_code | null | {} | hard | en | 87 | 87 | 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. |
slidex-v3-0050 | AMTWUZZICHAMZIDNCXZUVPZAIQCXZUVUTWUZZICHAMKWPUJKENYHSWTYUFMLUJUDQNIP | AMTWUZZICHAMZIDNCXZUVPZAIQCXZUVUTWUZZICHAMKWPUJKENYHSWTYUFMLUJUDQNIP | IN MY BEGINNING IS MY END AND IN MY END IS MY BEGINNING AS THE QUEEN OF SCOTS KNEW WELL | slidex | slidex | transposition | {
"type": "keyword",
"value": "BLETCHLEY"
} | advanced | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
cda-0013490 | 35 76 39 32 4 81 1 34 25 58 27 81 43 63 72 11 49 60 93 76 81 3 22 2 64 50 87 45 30 32 4 99 50 66 99 80 22 92 76 3 62 22 3 60 17 48 40 23 11 11 1 57 23 78 27 50 94 93 64 64 48 99 67 32 91 70 72 91 11 33 87 14 34 48 | 35 76 39 32 4 81 1 34 25 58 27 81 43 63 72 11 49 60 93 76 81 3 22 2 64 50 87 45 30 32 4 99 50 66 99 80 22 92 76 3 62 22 3 60 17 48 40 23 11 11 1 57 23 78 27 50 94 93 64 64 48 99 67 32 91 70 72 91 11 33 87 14 34 48 | COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER THE MESSAGE WAS HIDDEN BUT NOT SECURE | homophonic | homophonic | null | {} | medium | en | 74 | 74 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
venona-pad-reuse-165 | 2DCEA64X2VXSWCW4X5XMEWXBSMBCDXQENCE37XMCDXQVGH | 2DCEA64X2VXSWCW4X5XMEWXBSMBCDXQENCE37XMCDXQVGH | I HAVE NOT YET BEGUN TO FIGHT SAID THE CAPTAIN TO THE CREW | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "SECRET"
} | expert | en | 46 | 46 | cipher_museum | 0.2 | public | null | null |
m94-177 | QDBKZOBABIOHLLDLBKQUWMMVCFUPPAJGLCNNWDBVMLDZHVMMDZQABUXYKJCIGNTKMMLTBZHDRZVGFXULXKOIYBFCXAMJCEEZMMLVGZGLDFBCCJSHACFLWFRHWAETILUPRACKBDDIWACVGVPJORJJDCRILAB | QDBKZOBABIOHLLDLBKQUWMMVCFUPPAJGLCNNWDBVMLDZHVMMDZQABUXYKJCIGNTKMMLTBZHDRZVGFXULXKOIYBFCXAMJCEEZMMLVGZGLDFBCCJSHACFLWFRHWAETILUPRACKBDDIWACVGVPJORJJDCRILAB | IT IS RATHER FOR US TO BE HERE DEDICATED TO THE GREAT TASK REMAINING BEFORE US THAT FROM THESE HONORED DEAD WE TAKE INCREASED DEVOTION TO THAT CAUSE FOR WHICH THEY GAVE THE LAST FULL MEASURE | m94 | m94 | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 155 | 155 | cipher_museum | 0.2 | public | null | null |
tap-code-018 | .... .... .... .. .... ..... .... ... .... .... ... ... ... .... ... .... ... ... . ..... | .... .... .... .. .... ..... .... ... .... .... ... ... ... .... ... .... ... ... . ..... | TRUST NO ONE | tap_code | tap_code | substitution | {
"type": "none",
"value": null
} | beginner | en | 70 | 107 | cipher_museum | 0.2 | public | null | null |
cda-0021585 | could after enter south after raids south hence issue final three extra depth turns hours extra among large place house alert brief exact track batch | could after enter south after raids south hence issue final three extra depth turns hours extra among large place house alert brief exact track batch | CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | 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. |
adfgx-141 | FFXFDAGDGFAGFDGAADFAGXFDAXDAGDDA | FFXFDAGDGFAGFDGAADFAGXFDAXDAGDDA | LOCK DOWN ALL GATES | adfgx | adfgx | fractionation | {
"polybius": "SECRET",
"columnar": "AGENTS"
} | advanced | en | 32 | 32 | cipher_museum | 0.2 | public | null | null |
rail-fence-032 | NVRNERPYUEEYHNESAIGMSAEEEITRUTORNMWEHIMKNAITK | NVRNERPYUEEYHNESAIGMSAEEEITRUTORNMWEHIMKNAITK | NEVER INTERRUPT YOUR ENEMY WHEN HE IS MAKING A MISTAKE | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 2
} | intermediate | en | 45 | 45 | cipher_museum | 0.2 | public | null | null |
rail-fence-v2-0388 | BARDWITNDAGDEEDYEOSRT | BARDWITNDAGDEEDYEOSRT | BRIDGE DESTROYED AT DAWN | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 10
} | intermediate | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v3-0296 | ULNKNMENQKLPWXMNVVIZRGXHSJVMTKMOCATPNIHUXRPWFGVAVVRXXIRFWZZRGRQAFZJHNTOVTKZZVPRAPVT | ULNKNMENQKLPWXMNVVIZRGXHSJVMTKMOCATPNIHUXRPWFGVAVVRXXIRFWZZRGRQAFZJHNTOVTKZZVPRAPVT | DIFFIE AND HELLMAN INVENTED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX CHANGING EVERYTHING | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "ROME"
} | advanced | en | 83 | 83 | cipher_museum | 2.0 | public | null | null |
nihilist-v2-0079 | 65 37 59 69 28 27 72 27 78 87 35 30 35 25 56 86 28 59 46 27 68 57 48 57 75 47 67 68 48 37 33 46 66 88 38 30 44 43 86 77 25 48 36 46 88 87 38 50 73 27 88 69 36 50 63 56 69 69 44 58 46 24 78 66 44 67 56 54 76 59 25 29 46 46 75 68 38 59 | 65 37 59 69 28 27 72 27 78 87 35 30 35 25 56 86 28 59 46 27 68 57 48 57 75 47 67 68 48 37 33 46 66 88 38 30 44 43 86 77 25 48 36 46 88 87 38 50 73 27 88 69 36 50 63 56 69 69 44 58 46 24 78 66 44 67 56 54 76 59 25 29 46 46 75 68 38 59 | THE HEAVENS DECLARE THE GLORY OF GOD AND THE FIRMAMENT SHOWETH FORTH HIS HANDIWORK EACH NIGHT | nihilist | nihilist | fractionation | {
"polybius": "PALACE",
"keyword": "BATTLE"
} | advanced | en | 156 | 233 | cipher_museum | 2.0 | public | null | null |
vernam-v3-0149 | JDISTRNTSDFYHYZFBLFQDNVTGQTPLIXCXIMHAFGHUZCYGDOHDGGKJDSLLYHLQPSMDQZPNCENQCG | JDISTRNTSDFYHYZFBLFQDNVTGQTPLIXCXIMHAFGHUZCYGDOHDGGKJDSLLYHLQPSMDQZPNCENQCG | THE BATTLE OF GETTYSBURG LASTED THREE DAYS AND COST OVER FIFTY THOUSAND CASUALTIES TOTAL | vernam | vernam | stream | {
"type": "pad",
"value": "QWERTY (repeating)"
} | expert | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
two-square-182 | ALLISLPQRPETUAFC | ALLISLPQRPETUAFC | ALL IS LOST RETREAT | two_square | two_square | polygraphic | {
"key1": "ENIGMA",
"key2": "CRYPTO"
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
commercial-code-v2-0012 | ZUZUZ QAZUZ LAZUZ XAZUZ XAZUZ LAZUZ SAZUZ RAZUZ XUZUZ ZUZUZ BAZUZ DAZUZ DAZUZ SAZUZ QAZUZ TAZUZ PAZUZ LAZUZ XAZUZ KAZUZ GAZUZ FAZUZ XUZUZ | ZUZUZ QAZUZ LAZUZ XAZUZ XAZUZ LAZUZ SAZUZ RAZUZ XUZUZ ZUZUZ BAZUZ DAZUZ DAZUZ SAZUZ QAZUZ TAZUZ PAZUZ LAZUZ XAZUZ KAZUZ GAZUZ FAZUZ XUZUZ | MISSION ACCOMPLISHED | commercial_code | commercial_code | codebook | {
"type": "none",
"value": null
} | expert | en | 115 | 137 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-v3-0059 | 425142583612228831045522238629204212028209282073202004251672008203920732028676925206241222096500425170282083 | 425142583612228831045522238629204212028209282073202004251672008203920732028676925206241222096500425170282083 | THE THIN RED LINE STOOD FIRM AT BALACLAVA AS THE RUSSIAN CAVALRY CHARGED ACROSS THE PLAIN | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "SENTORISCA"
} | advanced | en | 108 | 108 | cipher_museum | 2.0 | public | null | null |
slidex-v3-0076 | VOFQCKWRPWEBUKPWDGVPMVKWAMVHUDTSNDVBXOQGZUCXHSSEGJVUYMKBZYDOCZIEPDEADOEVED | VOFQCKWRPWEBUKPWDGVPMVKWAMVHUDTSNDVBXOQGZUCXHSSEGJVUYMKBZYDOCZIEPDEADOEVED | WHAT DOES IT PROFIT A MAN TO GAIN THE WHOLE WORLD AND YET LOSE HIS OWN IMMORTAL SOUL FOREVER | slidex | slidex | transposition | {
"type": "keyword",
"value": "BLETCHLEY"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
vigenere-v3-0187 | YVVKZKZLTTKAVTWGUZVMFOWWUOEWSISJFFDLJLSDQBFMSIAFKFZGXIVTDHYXWIVWWOCZFZWJSAVGK | YVVKZKZLTTKAVTWGUZVMFOWWUOEWSISJFFDLJLSDQBFMSIAFKFZGXIVTDHYXWIVWWOCZFZWJSAVGK | THE RIGHT OF THE PEOPLE TO KEEP AND BEAR ARMS SHALL NOT BE INFRINGED BY THE FEDERAL GOVERNMENT | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "FORTRESS"
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
cda-0017273 | KVYTYVWZLCTAGLEUEDKMQLFTWVOWANQULWNIDXEBEBGMTBMWVYWSPXVAANZXVEEIEGSGEPRVRSIKLJGRBNSGKPOFFTJPGCCHWIJOPFYOITAXUKKZVELSHGSMWLBUQCILTRVTTRYMHUSGRXRAIXLGFYLAHTVGVRYCGLZSNWWOTM | KVYTYVWZLCTAGLEUEDKMQLFTWVOWANQULWNIDXEBEBGMTBMWVYWSPXVAANZXVEEIEGSGEPRVRSIKLJGRBNSGKPOFFTJPGCCHWIJOPFYOITAXUKKZVELSHGSMWLBUQCILTRVTTRYMHUSGRXRAIXLGFYLAHTVGVRYCGLZSNWWOTM | THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF EVERY SYSTEM NEEDS AN HONEST THREAT MODEL ATBASH ENCODES BY REVERSING THE ALPHABET DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE | running_key | running_key | null | {} | hard | en | 170 | 170 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
cda-0006776 | GUR GEVGURZWHF NVCVRE OQIOAQRF GVR OYCVOPSG NL BAS CBFWGWBA SONV YRGGRE | GUR GEVGURZWHF NVCVRE OQIOAQRF GVR OYCVOPSG NL BAS CBFWGWBA SONV YRGGRE | THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER | porta | porta | null | {
"key": "SECURE"
} | medium | en | 61 | 61 | synthetic_educational | null | null | [
"kasiski_examination",
"index_of_coincidence"
] | Porta: 13-row table polyalphabetic cipher; reciprocal (encrypt = decrypt). |
voynich-render-v2-0104 | cdoemzoqgdqx yirskqlx gcog gcd krgdffkhdryd qdniqg kx oyyzqogd ore qdmzkqdx klldekogd xjksg oygkir | cdoemzoqgdqx yirskqlx gcog gcd krgdffkhdryd qdniqg kx oyyzqogd ore qdmzkqdx klldekogd xjksg oygkir | HEADQUARTERS CONFIRMS THAT THE INTELLIGENCE REPORT IS ACCURATE AND REQUIRES IMMEDIATE SWIFT ACTION | voynich_render | voynich_render | substitution | {
"type": "none",
"value": null
} | expert | en | 86 | 98 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v2-0465 | SDSFLMJAFYSFVYGJVGFOWDUZESFTMADLLZWTGETWLGSLLSUCLZWYWJESFWFAYESUAHZWJESUZAFW | SDSFLMJAFYSFVYGJVGFOWDUZESFTMADLLZWTGETWLGSLLSUCLZWYWJESFWFAYESUAHZWJESUZAFW | ALAN TURING AND GORDON WELCHMAN BUILT THE BOMBE TO ATTACK THE GERMAN ENIGMA CIPHER MACHINE | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "DYNASTY"
} | beginner | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
trifid-v2-0483 | UFFBWIDIUYYIKZFGDNNFY+AAVNOOTOWJSSQRCMMDRRFJBMQQYVRQOOMF+ORPC+EBVQIEBIFOKWVDYUEKCFEW | UFFBWIDIUYYIKZFGDNNFY+AAVNOOTOWJSSQRCMMDRRFJBMQQYVRQOOMF+ORPC+EBVQIEBIFOKWVDYUEKCFEW | THE REGIMENT WILL HOLD ITS POSITION UNTIL REINFORCEMENTS ARRIVE FROM THE EASTERN COMMAND POST HERE | trifid | trifid | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
cda-0020735 | LIN / NO-DA-IH / NA-AS-TSO-SI / WOL-LA-CHEE / TSAH / GAH / DZEH / WOL-LA-CHEE / BE / WOL-LA-CHEE / SHUSH / DIBEH-YAZZIE / DZEH / A-KHA / NO-DA-IH / THAN-ZIE / CLA-GI-AIH / NO-DA-IH / THAN-ZIE / DIBEH / LIN / A-KHA / NO-DA-IH / D... | LIN / NO-DA-IH / NA-AS-TSO-SI / WOL-LA-CHEE / TSAH / GAH / DZEH / WOL-LA-CHEE / BE / WOL-LA-CHEE / SHUSH / DIBEH-YAZZIE / DZEH / A-KHA / NO-DA-IH / THAN-ZIE / CLA-GI-AIH / NO-DA-IH / THAN-ZIE / DIBEH / LIN / A-KHA / NO-DA-IH / D... | HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL | navajo_code | navajo_code | null | {} | hard | en | 233 | 233 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
great-cipher-v2-0023 | 141 100 100 111 107 163 172 149 143 166 135 172 109 102 163 172 | 141 100 100 111 107 163 172 149 143 166 135 172 109 102 163 172 | LOOSE LIPS SINK SHIPS | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "VERSAILLES"
} | expert | en | 48 | 63 | cipher_museum | 2.0 | public | null | null |
cda-0009032 | EPFBA JGLRM OXSUA XIXFO ZNVNW AFRUM NWWUX GMGKE PLZVI ZPTWZ GGFIA LVOMD XGLVZ KOTUI IYUMH HVVJW ELIEK ZIYPW EJ | EPFBA JGLRM OXSUA XIXFO ZNVNW AFRUM NWWUX GMGKE PLZVI ZPTWZ GGFIA LVOMD XGLVZ KOTUI IYUMH HVVJW ELIEK ZIYPW EJ | THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT THE VIGENERE CIPHER USES A REPEATING KEYWORD | autokey | autokey | null | {
"primer": "LIBRARY"
} | hard | en | 92 | 92 | synthetic_educational | null | null | [] | |
running-key-v3-0108 | WVUOECDYWZOXKNESW | WVUOECDYWZOXKNESW | ARCHERS TO THE WALLS | running_key | running_key | polyalphabetic | {
"type": "text",
"value": "Churchill Dunkirk speech"
} | intermediate | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
slidex-v3-0208 | SSXZYTRXJLOUERSLVGKMJJAVUFNYGDLPIJYTQDAIWFJJGCXQGDLPIJYTGGZVQMHDMEJTIJWXCQDSAVCYLGZWYRUWHTIJYOOQYTDODZHBAWILUCGOHMHTKOOCDQYTNXNXILLGDKDZOUDSAWYTLEVGOFFDXJLPJVCUMZSSINPQYQASMSYTQX | SSXZYTRXJLOUERSLVGKMJJAVUFNYGDLPIJYTQDAIWFJJGCXQGDLPIJYTGGZVQMHDMEJTIJWXCQDSAVCYLGZWYRUWHTIJYOOQYTDODZHBAWILUCGOHMHTKOOCDQYTNXNXILLGDKDZOUDSAWYTLEVGOFFDXJLPJVCUMZSSINPQYQASMSYTQX | THE VENONA PROJECT WHICH RAN FROM NINETEEN FORTY THREE TO NINETEEN EIGHTY DECRYPTED THOUSANDS OF SOVIET INTELLIGENCE MESSAGES REVEALING THE IDENTITIES OF NUMEROUS AGENTS WHO HAD PENETRATED THE US GOVERNMENT | slidex | slidex | transposition | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 178 | 178 | cipher_museum | 2.0 | public | null | null |
m209-082 | CJGWJXKLJUBNONAWLK | CJGWJXKLJUBNONAWLK | AWAIT FURTHER ORDERS | m209 | m209 | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
slidex-v3-0200 | FAJVDRIQCKPTTQFYIYOUYSYPDGJIAQLOVIHOGOSSSAYOKZMPLPMXUXEVMPEMAVWSTQHTVTTTPIHIIVXFHWXZSAPTFCTQUXAVHTIJIQVCZKIOQDUCKJASCUVCZKIOHOHEQRSSILEVIRIIFDXQIOVPDMURIJHRWSYOLVJKUP | FAJVDRIQCKPTTQFYIYOUYSYPDGJIAQLOVIHOGOSSSAYOKZMPLPMXUXEVMPEMAVWSTQHTVTTTPIHIIVXFHWXZSAPTFCTQUXAVHTIJIQVCZKIOQDUCKJASCUVCZKIOHOHEQRSSILEVIRIIFDXQIOVPDMURIJHRWSYOLVJKUP | 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 | slidex | slidex | transposition | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 166 | 166 | cipher_museum | 2.0 | public | null | null |
m209-202 | FHDVLAMMLVANPKAANN | FHDVLAMMLVANPKAANN | AWAIT FURTHER ORDERS | m209 | m209 | machine | {
"type": "seed",
"value": "MUSEUM"
} | expert | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
cda-0019131 | BAABA AABBB AABAA AAAAA BAAAA AAABA AABBB ABAAA BAABA AABAA AAABA BAABA BAABB BAAAA AABAA BAAAB AABBB ABBAB BAABB ABABA AAABB ABABB AAAAA ABAAB AABAA ABABB ABAAA BAAAB BAABB BAAAB AABAA AABBB AAAAA BAAAA AAABB AABAA BAAAA | BAABA AABBB AABAA AAAAA BAAAA AAABA AABBB ABAAA BAABA AABAA AAABA BAABA BAABB BAAAA AABAA BAAAB AABBB ABBAB BAABB ABABA AAABB ABABB AAAAA ABAAB AABAA ABABB ABAAA BAAAB BAABB BAAAB AABAA AABBB AAAAA BAAAA AAABB AABAA BAAAA | THE ARCHITECTURE SHOULD MAKE MISUSE HARDER | bacon_cipher | bacon_cipher | null | {} | hard | en | 185 | 185 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
venona-pad-reuse-v3-0281 | E2AWRKPFAAXEKABVOBN77CV4WEOHOZJDH7EWCDAHO5WWEJA5LB6AEBKAF3AVR4LF2PFHMMO2AHRABX | E2AWRKPFAAXEKABVOBN77CV4WEOHOZJDH7EWCDAHO5WWEJA5LB6AEBKAF3AVR4LF2PFHMMO2AHRABX | BLESSED ARE THE MEEK FOR THEY SHALL INHERIT THE EARTH AND THE PEACEMAKERS SHALL BE CALLED SONS | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "FREEDOM"
} | expert | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v2-0934 | OPCPVJYMFQDGZKGTPXNERCMDSMRHCRXBXIYNQREPXJVQSIMIJWIEPJIGMOOQAOEFAPAHGAGE | OPCPVJYMFQDGZKGTPXNERCMDSMRHCRXBXIYNQREPXJVQSIMIJWIEPJIGMOOQAOEFAPAHGAGE | GENERAL GRANT HAS TAKEN VICKSBURG THE GREAT RIVER IS NOW OPEN FROM ITS SOURCE TO THE SEA | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 17
} | expert | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
vigenere-es-084 | XUMRCAZBSGYXMZMILLM | XUMRCAZBSGYXMZMILLM | LA UNION HACE LA FUERZA | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "MUSEUM"
} | intermediate | es | 19 | 19 | cipher_museum | 0.2 | public | null | null |
playfair-v2-0336 | EFTULHKNLOAXNBEGNECKLRUIPNBMIOSOBMTSBOMGMUHBOTMLQLXTPMZBMXINEFTZBTRLTUIGINKTKGUIRLOHUT | EFTULHKNLOAXNBEGNECKLRUIPNBMIOSOBMTSBOMGMUHBOTMLQLXTPMZBMXINEFTZBTRLTUIGINKTKGUIRLOHUT | THE REGIMENT WILL HOLD ITS POSITION UNTIL REINFORCEMENTS ARRIVE FROM THE EASTERN COMMAND POST HERE | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "BATTLE"
} | intermediate | en | 86 | 86 | cipher_museum | 2.0 | public | null | null |
cda-0015977 | 94 32 4 82 70 3 23 1 62 27 67 39 48 76 14 68 63 32 91 11 94 72 32 30 52 11 94 72 78 27 39 30 3 22 2 43 45 99 93 99 57 43 91 22 63 11 | 94 32 4 82 70 3 23 1 62 27 67 39 48 76 14 68 63 32 91 11 94 72 32 30 52 11 94 72 78 27 39 30 3 22 2 43 45 99 93 99 57 43 91 22 63 11 | HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | homophonic | homophonic | null | {} | medium | en | 46 | 46 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
fialka-v3-0317 | ZXHGRAVJKLVEOODJ | ZXHGRAVJKLVEOODJ | SOUND THE TRUMPETS | fialka | fialka | machine | {
"type": "seed",
"value": "SPUTNIK"
} | expert | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
cda-0007077 | TTNW HOSL THEP HHRS CSAT ISTE YEHT MHLS HEDP PIEM LAIA IIRN TTUU VSEO HOEE SEMF OHCR UEBF NTPE GEHB TETD NRDB SHRE ALAC SLAE TSIH AERO SIRE SEEE ESOE TIYB IUTL TSPO ERLS UTOY MASA LSOW THLA EPSI PSTO NRRE WTIN SNNT TX | TTNW HOSL THEP HHRS CSAT ISTE YEHT MHLS HEDP PIEM LAIA IIRN TTUU VSEO HOEE SEMF OHCR UEBF NTPE GEHB TETD NRDB SHRE ALAC SLAE TSIH AERO SIRE SEEE ESOE TIYB IUTL TSPO ERLS UTOY MASA LSOW THLA EPSI PSTO NRRE WTIN SNNT TX | THE BEST LESSONS SHOW WHERE THE METHOD FAILS POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | scytale | scytale | null | {
"cols": 6
} | hard | en | 174 | 174 | synthetic_educational | null | null | [] | |
enigma-v2-0583 | EVUOTMUAFYYIRHSFZYWIEHLDSRXANMUTGIYODLOTQSKCRIBOUYUXXARQOSIYNOHSAIURIEDQUQJIOJE | EVUOTMUAFYYIRHSFZYWIEHLDSRXANMUTGIYODLOTQSKCRIBOUYUXXARQOSIYNOHSAIURIEDQUQJIOJE | NATURE IS WRITTEN IN THE LANGUAGE OF MATHEMATICS AND ITS CHARACTERS ARE TRIANGLES AND CIRCLES | enigma | enigma | machine | {
"type": "rotor_start",
"value": "MNO"
} | expert | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
fialka-v2-0421 | ILYDCAQAVFKMKEODZKUUPKEIRYFGEZYVVDHPKBKDQZOHGBUFXZWVKRC | ILYDCAQAVFKMKEODZKUUPKEIRYFGEZYVVDHPKBKDQZOHGBUFXZWVKRC | BREVITY IS THE SOUL OF WIT AND TEDIOUSNESS THE OUTWARD FLOURISHES | fialka | fialka | machine | {
"type": "seed",
"value": "SPUTNIK"
} | expert | en | 55 | 55 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v2-0600 | MJRHEANMQAMNAARTEWEGCLIQPASATWNSASDAIQALKWPGKQAVLSGTALGDWNENASDEGKPNGJAQWRTPVGCSGNLMJRHQEQXIQQB | MJRHEANMQAMNAARTEWEGCLIQPASATWNSASDAIQALKWPGKQAVLSGTALGDWNENASDEGKPNGJAQWRTPVGCSGNLMJRHQEQXIQQB | THE ZIMMERMANN TELEGRAM WAS DECODED BY ROOM FORTY IN LONDON AND BROUGHT AMERICA INTO THE GREAT WAR | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 95 | 95 | cipher_museum | 2.0 | public | null | null |
cda-0011672 | WUZDBNUFVQ FULWHNZ VNH DHVFWHNZ IBD LNBDHFDUBI VDXVZW HIFBKHZ XS NHEHNZUIT DWH VQLWVXHD YNHOMHIFS VIVQSZUZ FVI NHEHVQ JHVP FULWHNZ | WUZDBNUFVQ FULWHNZ VNH DHVFWHNZ IBD LNBDHFDUBI VDXVZW HIFBKHZ XS NHEHNZUIT DWH VQLWVXHD YNHOMHIFS VIVQSZUZ FVI NHEHVQ JHVP FULWHNZ | HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION ATBASH ENCODES BY REVERSING THE ALPHABET FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | monoalphabetic | monoalphabetic | null | {
"alphabet": "VXFKHYTWUAPQGIBLONZDMEJCSR"
} | hard | en | 113 | 113 | synthetic_educational | null | null | [] | |
kama-sutra-v3-0318 | MJN KRMNX JUFV LYAT | MJN KRMNX JUFV LYAT | THE GATES HOLD FIRM | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "WISDOM"
} | intermediate | en | 16 | 19 | cipher_museum | 2.0 | public | null | null |
fialka-137 | OOSFQVVFQTXQSWX | OOSFQVVFQTXQSWX | MEET AT THE OLD OAK | fialka | fialka | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
stager-route-353 | LCTEFHOEVDEAHHEETBOELSAERRTLAUEJUDGVAAKXXFRNEHOSTNTNDSOXXRGTSHEI | LCTEFHOEVDEAHHEETBOELSAERRTLAUEJUDGVAAKXXFRNEHOSTNTNDSOXXRGTSHEI | LET JUSTICE BE DONE THOUGH THE HEAVENS FALL AND THE STARS GO DARK FOREVER | stager_route | stager_route | transposition | {
"type": "integer",
"value": 8
} | expert | en | 64 | 64 | cipher_museum | 0.2 | public | null | null |
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