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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
pigpen-014 | ⌐ ¬• ¬• ┐ ╲ ¬• ┤• ╲ ╳ ┐• ┼ ╳ ┐• ┼ ⌐ ╳ | ⌐ ¬• ¬• ┐ ╲ ¬• ┤• ╲ ╳ ┐• ┼ ╳ ┐• ┼ ⌐ ╳ | ALL IS LOST RETREAT | pigpen | pigpen | substitution | {
"type": "none",
"value": null
} | beginner | en | 22 | 37 | cipher_museum | 0.2 | public | null | null |
cda-0012520 | ISRO OTGH SEOQ JCKB DYGJ DWMX YWPI QQUM PLEG NMLL UAUS OCOR FLX | ISRO OTGH SEOQ JCKB DYGJ DWMX YWPI QQUM PLEG NMLL UAUS OCOR FLX | POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE | one_time_pad | one_time_pad | null | {} | medium | en | 51 | 51 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
copiale-016 | K8 S5 A3 I9 H4 S1 S9 U8 V1 N7 H4 R8 N8 I3 V6 V9 U7 O4 | K8 S5 A3 I9 H4 S1 S9 U8 V1 N7 H4 R8 N8 I3 V6 V9 U7 O4 | SEND REINFORCEMENTS | copiale | copiale | substitution | {
"type": "keyword",
"value": "COPIALE"
} | advanced | en | 36 | 53 | cipher_museum | 0.2 | public | null | null |
purple-140 | IDKSUVYNTXJGPJNEH | IDKSUVYNTXJGPJNEH | CRYPTOGRAPHY RULES | purple | purple | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 17 | 17 | cipher_museum | 0.2 | public | null | null |
cda-0012685 | 80 69 59 66 82 52 50 65 36 82 80 61 80 82 68 11 68 25 80 50 11 50 29 68 65 80 82 61 52 80 50 20 82 11 25 82 69 77 82 66 80 50 52 65 68 66 66 82 80 29 65 59 20 57 50 52 50 29 76 80 68 61 66 80 59 52 66 59 80 82 11 82 61 82 80 95 82 61 52 68 80 82 76 59 57 11 82 61 50 25 29 11 50 25 80 68 65 36 68 29 11 66 80 50 25 80 68... | 80 69 59 66 82 52 50 65 36 82 80 61 80 82 68 11 68 25 80 50 11 50 29 68 65 80 82 61 52 80 50 20 82 11 25 82 69 77 82 66 80 50 52 65 68 66 66 82 80 29 65 59 20 57 50 52 50 29 76 80 68 61 66 80 59 52 66 59 80 82 11 82 61 82 80 95 82 61 52 68 80 82 76 59 57 11 82 61 50 25 29 11 50 25 80 68 65 36 68 29 11 66 80 50 25 80 68... | ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS | wallis_cipher | wallis_cipher | null | {} | hard | en | 139 | 139 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
cda-0020601 | 16.2.6 19.6.3 5.2.8 18.1.6 4.3.5 19.3.4 16.5.8 12.4.7 6.6.2 8.4.10 20.1.5 3.1.9 14.6.1 16.5.6 3.3.7 16.2.4 20.2.3 7.5.8 19.1.5 1.2.4 15.1.4 7.1.4 2.2.1 7.1.7 8.4.7 3.2.5 3.2.9 17.1.8 18.2.8 5.5.4 17.2.3 7.6.7 1.6.8 18.5.5 4.1.7 20.4.5 15.5.9 11.4.8 8.5.9 8.2.6 19.6.8 10.4.2 1.4.9 1.5.3 12.2.10 7.2.3 18.4.4 11.5.4 3.2.4... | 16.2.6 19.6.3 5.2.8 18.1.6 4.3.5 19.3.4 16.5.8 12.4.7 6.6.2 8.4.10 20.1.5 3.1.9 14.6.1 16.5.6 3.3.7 16.2.4 20.2.3 7.5.8 19.1.5 1.2.4 15.1.4 7.1.4 2.2.1 7.1.7 8.4.7 3.2.5 3.2.9 17.1.8 18.2.8 5.5.4 17.2.3 7.6.7 1.6.8 18.5.5 4.1.7 20.4.5 15.5.9 11.4.8 8.5.9 8.2.6 19.6.8 10.4.2 1.4.9 1.5.3 12.2.10 7.2.3 18.4.4 11.5.4 3.2.4... | THE MESSAGE WAS HIDDEN BUT NOT SECURE POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE FAIL CLOSED IS A POSTURE NOT A SLOGAN BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF | arnold_andre | arnold_andre | null | {} | hard | en | 162 | 162 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
cda-0003578 | RAGEB CLZRN FHERF HAPRE GNVAG LVANQ VFGEV OHGVB ASEVR QZNAR FGVZN GRQXR LYRAT GUSEB ZFGNG VFGVP FCBYL OVHFR APBQR QYRGG REFNF CNVEF BSAHZ OREFS EBZBA RGBSV IR | RAGEB CLZRN FHERF HAPRE GNVAG LVANQ VFGEV OHGVB ASEVR QZNAR FGVZN GRQXR LYRAT GUSEB ZFGNG VFGVP FCBYL OVHFR APBQR QYRGG REFNF CNVEF BSAHZ OREFS EBZBA RGBSV IR | ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 132 | 132 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
autokey-v3-0432 | JLUAMTWTFVOINSEZL | JLUAMTWTFVOINSEZL | ARCHERS TO THE WALLS | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
beaufort-v3-0676 | XZPTVLMHYUVGWFPOAYTNJBADXAUBHYMCZHINIGONDOZTLUOEXWCMKRHLRTWNMIZHQAAHYQOLW | XZPTVLMHYUVGWFPOAYTNJBADXAUBHYMCZHINIGONDOZTLUOEXWCMKRHLRTWNMIZHQAAHYQOLW | DO NOT GO GENTLE INTO THAT GOOD NIGHT OLD AGE SHOULD BURN AND RAVE AT CLOSE OF DAY RAGE RAGE | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "ANCHOR"
} | intermediate | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
vigenere-v2-1853 | MYMVMQPGXBIZESHKBIMHZTJACZPAXHCYQCLEZHUNTAANIMGCJHMMLQSIRWZUZRPLNIFEXUZYIGUCABDM | MYMVMQPGXBIZESHKBIMHZTJACZPAXHCYQCLEZHUNTAANIMGCJHMMLQSIRWZUZRPLNIFEXUZYIGUCABDM | THE BABINGTON PLOT TO ASSASSINATE QUEEN ELIZABETH WAS UNCOVERED BY FRANCIS WALSINGHAM IN TIME | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "TRIUMPH"
} | intermediate | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v2-0308 | LSKWAQWQELDBZWYUABWXKMOAQDGQIOHJRBEVNLZQHOFDIPMIQFHZQGSUOFDIPMAMEWP | LSKWAQWQELDBZWYUABWXKMOAQDGQIOHJRBEVNLZQHOFDIPMIQFHZQGSUOFDIPMAMEWP | I KNOW NOT WHAT COURSE OTHERS MAY TAKE BUT AS FOR ME GIVE ME LIBERTY OR GIVE ME DEATH | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "DIXIE"
} | intermediate | en | 67 | 67 | cipher_museum | 2.0 | public | null | null |
cda-0013256 | 06355 05749 0372 04451 5984 05096 04767 06059 2890 06336 02850 4759 4493 0962 2895 5052 02516 1609 05720 5998 5745 01605 00408 5722 5689 00360 04483 2276 01575 03856 1643 06325 6296 01643 05673 06061 07306 2860 06321 2577 4794 6633 6349 6029 6673 00720 06010 6352 2856 6309 6652 06366 02831 4788 4446 6294 2591 01573 004... | 06355 05749 0372 04451 5984 05096 04767 06059 2890 06336 02850 4759 4493 0962 2895 5052 02516 1609 05720 5998 5745 01605 00408 5722 5689 00360 04483 2276 01575 03856 1643 06325 6296 01643 05673 06061 07306 2860 06321 2577 4794 6633 6349 6029 6673 00720 06010 6352 2856 6309 6652 06366 02831 4788 4446 6294 2591 01573 004... | TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION THE ARCHITECTURE SHOULD MAKE MISUSE HARDER | zimmermann | zimmermann | null | {} | hard | en | 92 | 92 | synthetic_educational | null | null | [
"codebook_frequency",
"number_group_analysis"
] | Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher. |
cda-0007638 | CIABOTTHEANOSGSSTLYIUWERNSRMOEHSYLFAETPTIECUIDPCELIBOXXNSTEAIOESLTATHHESADARIRUDURSPRTHTSXXLIOTRHITSMRCOEBTRSHEENHEAERTEAEUTOXXWUTRNRIAHKSISPTEH | CIABOTTHEANOSGSSTLYIUWERNSRMOEHSYLFAETPTIECUIDPCELIBOXXNSTEAIOESLTATHHESADARIRUDURSPRTHTSXXLIOTRHITSMRCOEBTRSHEENHEAERTEAEUTOXXWUTRNRIAHKSISPTEH | CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS THE ARCHITECTURE SHOULD MAKE MISUSE HARDER TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION SLOWLY | stager_route | stager_route | null | {
"cols": 8
} | hard | en | 144 | 144 | synthetic_educational | null | null | [] | |
fractionated-morse-v2-0481 | NFUMLGANEFTVBLDSEMFTAVIAARUGWNMDWWNENMDWAVXGSSAJTXHAFUFTVVANLMENEEIFXDSPDXEKVSADTBLLDBLIGWPAFWM | NFUMLGANEFTVBLDSEMFTAVIAARUGWNMDWWNENMDWAVXGSSAJTXHAFUFTVVANLMENEEIFXDSPDXEKVSADTBLLDBLIGWPAFWM | THE AMBASSADOR HAS RECEIVED OUR MOST URGENT DISPATCHES AND AWAITS INSTRUCTIONS FROM LONDON HQ | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 95 | 95 | cipher_museum | 2.0 | public | null | null |
rail-fence-it-003 | NZAIAIVUVREZOCMDNRVMROARNLAUALEDLMNOTIAIRIEAEOCMEISTTPSS | NZAIAIVUVREZOCMDNRVMROARNLAUALEDLMNOTIAIRIEAEOCMEISTTPSS | NEL MEZZO DEL CAMMIN DI NOSTRA VITA MI RITROVAI PER UNA SELVA OSCURA | rail_fence | rail_fence | transposition | {
"type": "shift",
"value": 4
} | intermediate | it | 56 | 56 | cipher_museum | 0.2 | public | null | null |
vigenere-de-096 | CZQLMKOIROXWTMX | CZQLMKOIROXWTMX | ARBEIT MACHT FREI | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | de | 15 | 15 | cipher_museum | 0.2 | public | null | null |
alberti-disk-v3-0359 | JYJBUCBXXQDNPERCDHNNTSRNYCGZPKOPPUNJGQUZWAXMWPEYVUFHSZSSDGUGCNCTRQKTXTPQPYDFINYIOJVCZTFV | JYJBUCBXXQDNPERCDHNNTSRNYCGZPKOPPUNJGQUZWAXMWPEYVUFHSZSSDGUGCNCTRQKTXTPQPYDFINYIOJVCZTFV | IT IS A TRUTH UNIVERSALLY ACKNOWLEDGED THAT A SINGLE MAN IN POSSESSION OF A FORTUNE MUST BE IN WANT OF A WIFE | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 10
} | expert | en | 88 | 88 | cipher_museum | 2.0 | public | null | null |
cda-0014938 | 52 80 43 65 66 69 25 80 68 65 36 43 80 82 89 68 80 11 61 65 68 66 50 82 29 52 82 68 29 11 52 68 80 82 76 59 57 66 36 50 29 55 50 29 25 36 69 29 82 61 66 57 43 | 52 80 43 65 66 69 25 80 68 65 36 43 80 82 89 68 80 11 61 65 68 66 50 82 29 52 82 68 29 11 52 68 80 82 76 59 57 66 36 50 29 55 50 29 25 36 69 29 82 61 66 57 43 | CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING HONESTLY | wallis_cipher | wallis_cipher | null | {} | medium | en | 53 | 53 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
columnar-transposition-vf-0094 | TIALLORIIDTNNULDEEEHNGNHTWRLNIBSTSNESOOTTOTWEDEOHTABNEWTELPOEHDALKHHUHIXFRTIHLE | TIALLORIIDTNNULDEEEHNGNHTWRLNIBSTSNESOOTTOTWEDEOHTABNEWTELPOEHDALKHHUHIXFRTIHLE | THE TRUTH WILL OUT AND THE LIE WILL BE EXPOSED FOR THERE IS NOTHING HIDDEN THAT SHALL NOT BE KNOWN | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "PYTHON"
} | intermediate | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
red-type-a-017 | SYOJEJPVYOPNIOW | SYOJEJPVYOPNIOW | MEET AT THE OLD OAK | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "TOKYORED"
} | advanced | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
m94-v3-0242 | JCVNVJXBVGYZDNFNSDRLCTLTWIRQISTFSDWTVVSLMYAKNPGEZIWYRIWXKGCQCFSGLQMRLIFGWK | JCVNVJXBVGYZDNFNSDRLCTLTWIRQISTFSDWTVVSLMYAKNPGEZIWYRIWXKGCQCFSGLQMRLIFGWK | CHARGE OF THE LIGHT BRIGADE INTO THE VALLEY OF DEATH RODE THE SIX HUNDRED BRAVE CAVALIERS | m94 | m94 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0012882 | takes holds extra lines issue below raids again roads yield posts right early shore early right vague enter scout knife notes often watch large enemy | takes holds extra lines issue below raids again roads yield posts right early shore early right vague enter scout knife notes often watch large enemy | THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | 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. |
slidex-v2-0057 | DLVHQUVCYPMVROTNSWQADLVHLXSYPWEGDOANIPRPFJAVZUTMVHCYFQFLBUVBRLMHVPZQASRT | DLVHQUVCYPMVROTNSWQADLVHLXSYPWEGDOANIPRPFJAVZUTMVHCYFQFLBUVBRLMHVPZQASRT | WITH MALICE TOWARD NONE WITH CHARITY FOR ALL LET US BIND UP THE NATIONS WOUNDS AND HEAL | slidex | slidex | transposition | {
"type": "keyword",
"value": "BLETCHLEY"
} | advanced | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
affine-v3-0459 | UGYYMQG TGWGANGB WPGMTPC | UGYYMQG TGWGANGB WPGMTPC | MESSAGE RECEIVED CLEARLY | affine | affine | substitution | {
"a": 5,
"b": 12
} | beginner | en | 22 | 24 | cipher_museum | 2.0 | public | null | null |
trifid-v2-0162 | HRLEW+ENOLFJIC | HRLEW+ENOLFJIC | LIBERTY OR DEATH | trifid | trifid | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0013596 | 6321 02549 1590 01900 04782 6633 5672 6065 5385 06647 00383 05723 01612 00998 02838 5067 2581 1577 05656 06655 6041 01572 5975 06346 07303 04803 3519 01657 7885 7310 4784 5726 01278 5046 04803 03850 7925 00718 02902 06659 06021 6036 5425 6623 0363 5750 01581 05972 | 6321 02549 1590 01900 04782 6633 5672 6065 5385 06647 00383 05723 01612 00998 02838 5067 2581 1577 05656 06655 6041 01572 5975 06346 07303 04803 3519 01657 7885 7310 4784 5726 01278 5046 04803 03850 7925 00718 02902 06659 06021 6036 5425 6623 0363 5750 01581 05972 | THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES | zimmermann | zimmermann | null | {} | medium | en | 48 | 48 | synthetic_educational | null | null | [
"codebook_frequency",
"number_group_analysis"
] | Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher. |
m94-v3-0002 | NWXBVJTCCGFKNRVOXG | NWXBVJTCCGFKNRVOXG | CROSS THE RUBICON NOW | m94 | m94 | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
bifid-209 | BWOYCKURXUEBRFROCTGTODNYTCWHYUOURYVDTTLBRPFLCGC | BWOYCKURXUEBRFROCTGTODNYTCWHYUOURYVDTTLBRPFLCGC | ASK NOT WHAT YOUR COUNTRY CAN DO FOR YOU BUT WHAT YOU CAN DO | bifid | bifid | fractionation | {
"type": "keyword",
"value": "KEYWORD"
} | advanced | en | 47 | 47 | cipher_museum | 0.2 | public | null | null |
cda-0019417 | ILND SFCL PYQB CZUL TRXV DQMI LZGG YIMD ISZA XYDV LIZR MEAA E | ILND SFCL PYQB CZUL TRXV DQMI LZGG YIMD ISZA XYDV LIZR MEAA E | DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE | vernam | vernam | null | {} | medium | en | 49 | 49 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
cda-0006420 | FSOOAPRRIRNPCSTPHIHIUCHPINTEYNTSEAIDTAEMSAABOAISPAFTBLEPBLUDIUENSUILCSRLTANNITYEHMEESXTAUETAISTCSROEALOPNGOUEYTOLIRLLSX | FSOOAPRRIRNPCSTPHIHIUCHPINTEYNTSEAIDTAEMSAABOAISPAFTBLEPBLUDIUENSUILCSRLTANNITYEHMEESXTAUETAISTCSROEALOPNGOUEYTOLIRLLSX | FAIL CLOSED IS A POSTURE NOT A SLOGAN ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS | stager_route | stager_route | null | {
"cols": 7
} | hard | en | 119 | 119 | synthetic_educational | null | null | [
"column_count_search",
"route_pattern_search"
] | Route (Stager) cipher: write into rectangle, read via alternating column route. |
geheimschreiber-v2-0336 | LIAZZMSTEFGCVKCXWTGBLTRBACNBTCBZSPWQVFYXYMYHKTOKIUERVVGFQRSLHJEKHKMWTGODXSQDQFZOXWS | LIAZZMSTEFGCVKCXWTGBLTRBACNBTCBZSPWQVFYXYMYHKTOKIUERVVGFQRSLHJEKHKMWTGODXSQDQFZOXWS | KNOWLEDGE WITHOUT WISDOM IS A DANGEROUS THING AND WISDOM WITHOUT COURAGE IS ULTIMATELY WORTHLESS | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "GOTHIC"
} | expert | en | 83 | 83 | cipher_museum | 2.0 | public | null | null |
geez-monastic-v3-0271 | VYAAWLUFMWPPJMACVQIMZPWYAMAVYCJBMYVQGWYALXMWIFMZJYUFMDQMWUMZUZMWXVQYMJYBWZJVY | VYAAWLUFMWPPJMACVQIMZPWYAMAVYCJBMYVQGWYALXMWIFMZJYUFMDQMWUMZUZMWXVQYMJYBWZJVY | ON D DAY THE ALLIED FORCES LANDED ON FIVE NORMANDY BEACHES IN THE GREATEST SEABORNE INVASION | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "LALIBELA"
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
hill-v2-0210 | LHQSFGFISYRFDKZDKMHLYGKWVBNNGWBESUOXBDEMIBKMHLYGKMOXCAFECAHIGWKWVJVGIYTWPEAOKXIJQORJ | LHQSFGFISYRFDKZDKMHLYGKWVBNNGWBESUOXBDEMIBKMHLYGKMOXCAFECAHIGWKWVJVGIYTWPEAOKXIJQORJ | KNOWLEDGE WITHOUT WISDOM IS A DANGEROUS THING AND WISDOM WITHOUT COURAGE IS ULTIMATELY WORTHLESS | hill | hill | polygraphic | {
"a": 5,
"b": 7,
"c": 2,
"d": 9
} | advanced | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
cda-0004951 | BORYHPSRSCSATISTTIAIDAIIEBRERFEDTLFSERVORTERNGTSOMSHUUTTNRIIAMAEWKRRUCSHKCANTPEGEHBTEKINRERCTAIECIECIXXTRAGACSUEIADEFNIKISOREAHISLEEEOETEWNNYILPOERLSUTOAEAIPTMPXFTILENYSXXEPDNOPHOTHSRENTXSNITWERRNOTSSTLOF | BORYHPSRSCSATISTTIAIDAIIEBRERFEDTLFSERVORTERNGTSOMSHUUTTNRIIAMAEWKRRUCSHKCANTPEGEHBTEKINRERCTAIECIECIXXTRAGACSUEIADEFNIKISOREAHISLEEEOETEWNNYILPOERLSUTOAEAIPTMPXFTILENYSXXEPDNOPHOTHSRENTXSNITWERRNOTSSTLOF | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF | stager_route | stager_route | null | {
"cols": 6
} | hard | en | 204 | 204 | synthetic_educational | null | null | [
"column_count_search",
"route_pattern_search"
] | Route (Stager) cipher: write into rectangle, read via alternating column route. |
cda-0016762 | REQU KXTA AEAX WTVU QUFA NRUV HOQH PVFP UISU CFWC XNZB PHTJ EJZN GYZI XQZI TRFV IEWJ DWPJ QRLD RMLQ JKKT UPBZ TUUM J | REQU KXTA AEAX WTVU QUFA NRUV HOQH PVFP UISU CFWC XNZB PHTJ EJZN GYZI XQZI TRFV IEWJ DWPJ QRLD RMLQ JKKT UPBZ TUUM J | THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN | vernam | vernam | null | {} | hard | en | 93 | 93 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
beaufort-v2-0014 | YNHAWUGALZVNLU | YNHAWUGALZVNLU | PRESS THE ATTACK | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "NELSON"
} | intermediate | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
wallis-cipher-035 | 90 64 69 91 90 23 52 10 91 90 19 38 71 91 90 50 84 77 60 82 91 90 89 78 91 90 63 31 91 90 19 48 13 91 90 21 38 88 26 64 27 52 11 91 90 60 78 91 90 63 48 10 71 13 91 90 89 26 91 90 19 84 91 90 31 41 71 91 | 90 64 69 91 90 23 52 10 91 90 19 38 71 91 90 50 84 77 60 82 91 90 89 78 91 90 63 31 91 90 19 48 13 91 90 21 38 88 26 64 27 52 11 91 90 60 78 91 90 63 48 10 71 13 91 90 89 26 91 90 19 84 91 90 31 41 71 91 | IN WAR THE MORAL IS TO THE PHYSICAL AS THREE IS TO ONE | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "WALLIS"
} | expert | en | 136 | 203 | cipher_museum | 0.2 | public | null | null |
cda-0019582 | SMDQ MIEY BAOE QLJZ IUTK SEER VHYW MHIE VFYS BRJW JETX DEGT JWAH FUBX AYKI DCNQ TZEC AZEP VFWU NXBH RKHS AFPQ JXKI ELPG NKMK QWMS BULM AWIY FJTA IJLQ DJRD GYDG KNXZ GM | SMDQ MIEY BAOE QLJZ IUTK SEER VHYW MHIE VFYS BRJW JETX DEGT JWAH FUBX AYKI DCNQ TZEC AZEP VFWU NXBH RKHS AFPQ JXKI ELPG NKMK QWMS BULM AWIY FJTA IJLQ DJRD GYDG KNXZ GM | A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY | running_key | running_key | null | {} | hard | en | 134 | 134 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
cda-0021639 | 6331 02594 01592 1924 4797 6692 05745 06065 05428 6599 00403 5724 1614 01032 02858 5070 2531 1585 05658 6632 06044 01582 6010 6327 07307 04740 3469 1622 7885 07228 04711 05741 01293 5082 4734 03804 07924 0638 2912 6613 6023 5999 05341 6652 00363 5714 1604 06013 1273 4757 04434 04809 6350 00945 4721 04419 1983 6678 0597... | 6331 02594 01592 1924 4797 6692 05745 06065 05428 6599 00403 5724 1614 01032 02858 5070 2531 1585 05658 6632 06044 01582 6010 6327 07307 04740 3469 1622 7885 07228 04711 05741 01293 5082 4734 03804 07924 0638 2912 6613 6023 5999 05341 6652 00363 5714 1604 06013 1273 4757 04434 04809 6350 00945 4721 04419 1983 6678 0597... | THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH | zimmermann | zimmermann | null | {} | hard | en | 177 | 177 | synthetic_educational | null | null | [
"codebook_frequency",
"number_group_analysis"
] | Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher. |
gronsfeld-v2-0563 | YIYPANPLQGJXUVTJIHMAELKAAPHCMSJERTFKKNBOPXNMLCRJQNIKXWUPHYINFMTBHGJOMLFW | YIYPANPLQGJXUVTJIHMAELKAAPHCMSJERTFKKNBOPXNMLCRJQNIKXWUPHYINFMTBHGJOMLFW | WE SHALL FIGHT ON THE BEACHES AND WE SHALL FIGHT ON THE LANDING GROUNDS AND IN THE FIELDS | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "24680"
} | intermediate | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
geez-monastic-v3-0177 | RHTAATBZFTIJTQTTUYOFIJTWAJZHHESJTFEIIJTTZFIJZSBIJTCTZPTQZUTFAAJZHHRTPZHHTBAOSA | RHTAATBZFTIJTQTTUYOFIJTWAJZHHESJTFEIIJTTZFIJZSBIJTCTZPTQZUTFAAJZHHRTPZHHTBAOSA | BLESSED ARE THE MEEK FOR THEY SHALL INHERIT THE EARTH AND THE PEACEMAKERS SHALL BE CALLED SONS | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "AXUM"
} | advanced | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
kl7-124 | EAGTDAQPCADAZPIWTJEA | EAGTDAQPCADAZPIWTJEA | RENDEZVOUS AT MIDNIGHT | kl7 | kl7 | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 20 | 20 | cipher_museum | 0.2 | public | null | null |
enigma-008 | IIBLJKVBHULM | IIBLJKVBHULM | HOLD POSITION | enigma | enigma | machine | {
"type": "rotor_start",
"value": "AAA"
} | expert | en | 12 | 12 | cipher_museum | 0.2 | public | null | null |
cda-0004361 | NYNA GHEVAT OEBXR RAVTZN JVGU PEVOF NAQ GUR OBZOR ZNPUVAR GUR NHGBXRL PVCURE RKGRAQF GUR XRL JVGU GUR CYNVAGRKG VGFRYS SEVRQZNA RFGVZNGRQ XRL YRATGU SEBZ FGNGVFGVPF | NYNA GHEVAT OEBXR RAVTZN JVGU PEVOF NAQ GUR OBZOR ZNPUVAR GUR NHGBXRL PVCURE RKGRAQF GUR XRL JVGU GUR CYNVAGRKG VGFRYS SEVRQZNA RFGVZNGRQ XRL YRATGU SEBZ FGNGVFGVPF | ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 139 | 139 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
cda-0019356 | MOIZV FKIDC ERHAW KCIGB RHENE ORCZB SKLEM ONXYV NNQXK GZZSV CKJNK AGWHP EJOPW LSIUK RHFPI AWFWS DUCPL UBALE EPGOC WQZYK ECKLS LRHO | MOIZV FKIDC ERHAW KCIGB RHENE ORCZB SKLEM ONXYV NNQXK GZZSV CKJNK AGWHP EJOPW LSIUK RHFPI AWFWS DUCPL UBALE EPGOC WQZYK ECKLS LRHO | THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS | running_key | running_key | null | {} | hard | en | 109 | 109 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
cda-0002476 | THUUE EROCE RTQDB ACSAS CONEW NNYIL XSSTL OFGBA BTSAM UIUEE MIFIH MLRIH ETEDI ANCDE SREST ONITU NEBOR YHPSX XMAEW KRRWA TEFCD ITNFL AEODR SMSEA RCHAU DEINS ERCRO ELYRI LRUCS HKCAX XLEEE OETOS TNPAL NIYET UCNXE SKOTC | THUUE EROCE RTQDB ACSAS CONEW NNYIL XSSTL OFGBA BTSAM UIUEE MIFIH MLRIH ETEDI ANCDE SREST ONITU NEBOR YHPSX XMAEW KRRWA TEFCD ITNFL AEODR SMSEA RCHAU DEINS ERCRO ELYRI LRUCS HKCAX XLEEE OETOS TNPAL NIYET UCNXE SKOTC | THE ARCHITECTURE SHOULD MAKE MISUSE HARDER INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL | stager_route | stager_route | null | {
"cols": 6
} | hard | en | 180 | 180 | synthetic_educational | null | null | [
"column_count_search",
"route_pattern_search"
] | Route (Stager) cipher: write into rectangle, read via alternating column route. |
cda-0021256 | ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w32⟩ ⟨a07⟩ ⟨a17⟩ ⟨w20⟩ ⟨a37⟩ ⟨w10⟩ ⟨a23⟩ ⟨w14⟩ ⟨w10⟩ ⟨w32⟩ ⟨a07⟩ ⟨w14⟩ ⟨w32⟩ ⟨a17⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨w20⟩ ⟨w32⟩ ⟨w22⟩ ⟨w08⟩ ⟨w28⟩ ⟨w22⟩ ⟨w20⟩ ⟨a23⟩ ⟨w28⟩ ⟨a01⟩ ⟨w14⟩ ⟨a01⟩ ⟨w28⟩ ⟨w20⟩ ⟨a17⟩ ⟨w32⟩ ⟨w26⟩ ⟨a19⟩ ⟨w08⟩ ⟨a13⟩ ⟨a29⟩ ⟨w08⟩ ⟨a07⟩ ⟨a17⟩ ⟨a25⟩ ⟨a19⟩ ⟨w32⟩ ⟨w26⟩ ⟨a19⟩ ⟨w08⟩ ⟨a13⟩ ⟨a29⟩ ⟨a23⟩ ⟨a... | ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w32⟩ ⟨a07⟩ ⟨a17⟩ ⟨w20⟩ ⟨a37⟩ ⟨w10⟩ ⟨a23⟩ ⟨w14⟩ ⟨w10⟩ ⟨w32⟩ ⟨a07⟩ ⟨w14⟩ ⟨w32⟩ ⟨a17⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨w20⟩ ⟨w32⟩ ⟨w22⟩ ⟨w08⟩ ⟨w28⟩ ⟨w22⟩ ⟨w20⟩ ⟨a23⟩ ⟨w28⟩ ⟨a01⟩ ⟨w14⟩ ⟨a01⟩ ⟨w28⟩ ⟨w20⟩ ⟨a17⟩ ⟨w32⟩ ⟨w26⟩ ⟨a19⟩ ⟨w08⟩ ⟨a13⟩ ⟨a29⟩ ⟨w08⟩ ⟨a07⟩ ⟨a17⟩ ⟨a25⟩ ⟨a19⟩ ⟨w32⟩ ⟨w26⟩ ⟨a19⟩ ⟨w08⟩ ⟨a13⟩ ⟨a29⟩ ⟨a23⟩ ⟨a... | THE INDEX OF COINCIDENCE IS A USEFUL CLUE DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | babington | babington | null | {} | hard | en | 168 | 168 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
rail-fence-v3-0061 | AFCROAUTOMIAESFUCRNTTEIRNBDDRERIEHLDEDMEEJSIMSETWMIOSYAEENBTAAVBTOPNRIAYERAS | AFCROAUTOMIAESFUCRNTTEIRNBDDRERIEHLDEDMEEJSIMSETWMIOSYAEENBTAAVBTOPNRIAYERAS | AT THE BATTLE OF MIDWAY AMERICAN DIVE BOMBERS DESTROYED FOUR JAPANESE CARRIERS IN MINUTES | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 7
} | intermediate | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
typex-v2-0251 | ONKEYRCWIYFUKESZUDHAJSQRVESVLEQZOLBKBTYJHSWTYFMMYSDGWOGNEJKQISTKIRIURJLEWTXJOBMBWYGTRAEONTRLZOPJBIDKOFGXQTJPOBCTVZVZPBZWJWQLKXTTHXDQUIGPYNFQXHZEIAPIPGIEXAZJXZPKNZZMTTIDYGQW | ONKEYRCWIYFUKESZUDHAJSQRVESVLEQZOLBKBTYJHSWTYFMMYSDGWOGNEJKQISTKIRIURJLEWTXJOBMBWYGTRAEONTRLZOPJBIDKOFGXQTJPOBCTVZVZPBZWJWQLKXTTHXDQUIGPYNFQXHZEIAPIPGIEXAZJXZPKNZZMTTIDYGQW | THE GREAT CIPHER OF LOUIS XIV INVENTED BY ANTOINE AND BONAVENTURE ROSSIGNOL USED A NOMENCLATOR OF OVER FIVE HUNDRED NUMBERS REPRESENTING SYLLABLES WORDS AND NULLS AND REMAINED UNBROKEN FOR TWO CENTURIES | typex | typex | machine | {
"type": "keyword",
"value": "BRITAIN"
} | expert | en | 172 | 172 | cipher_museum | 2.0 | public | null | null |
bifid-v2-0551 | LRHBFILIVUPIADHQISTHOVUPVSNINOHISIHUMYNKESUDTIEOAOSOVHOICALEIEOSOWTADWFEIHQCDTOFONK | LRHBFILIVUPIADHQISTHOVUPVSNINOHISIHUMYNKESUDTIEOAOSOVHOICALEIEOSOWTADWFEIHQCDTOFONK | KNOWLEDGE WITHOUT WISDOM IS A DANGEROUS THING AND WISDOM WITHOUT COURAGE IS ULTIMATELY WORTHLESS | bifid | bifid | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 83 | 83 | cipher_museum | 2.0 | public | null | null |
beaufort-v3-0155 | AVMOMLDIOLWWOUHDSETTWUPXKEDFOASXTSJAVJYRGADNDAYJFFHVZDAKASXKCMEPYJFFHVWA | AVMOMLDIOLWWOUHDSETTWUPXKEDFOASXTSJAVJYRGADNDAYJFFHVZDAKASXKCMEPYJFFHVWA | TWO ROADS DIVERGED IN A YELLOW WOOD AND SORRY I COULD NOT TRAVEL BOTH AND BE ONE TRAVELER | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "TRAFALGAR"
} | intermediate | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
nihilist-v3-0301 | 64 27 58 53 36 65 58 80 35 57 84 38 88 33 47 87 58 | 64 27 58 53 36 65 58 80 35 57 84 38 88 33 47 87 58 | ARCHERS TO THE WALLS | nihilist | nihilist | fractionation | {
"polybius": "NARODNAYA",
"keyword": "VOLYA"
} | advanced | en | 34 | 50 | cipher_museum | 2.0 | public | null | null |
solitaire-v2-0056 | AETGNFLLSXRFZCBZHFTIEEIQCJJZGUIZLPLBQTSNFNVZERANKDBGSNUALEEBDBMHXNZ | AETGNFLLSXRFZCBZHFTIEEIQCJJZGUIZLPLBQTSNFNVZERANKDBGSNUALEEBDBMHXNZ | I KNOW NOT WHAT COURSE OTHERS MAY TAKE BUT AS FOR ME GIVE ME LIBERTY OR GIVE ME DEATH | solitaire | solitaire | stream | {
"type": "none",
"value": null
} | expert | en | 67 | 67 | cipher_museum | 2.0 | public | null | null |
kl7-v2-0425 | DLFMHISURIRXOVJECJYLSNODCVSLPQEOBFGNNYEANCXAMVISRUHNSWZRFOECRDQJOO | DLFMHISURIRXOVJECJYLSNODCVSLPQEOBFGNNYEANCXAMVISRUHNSWZRFOECRDQJOO | WE ARE SUCH STUFF AS DREAMS ARE MADE ON AND OUR LITTLE LIFE IS ROUNDED WITH A SLEEP | kl7 | kl7 | machine | {
"type": "seed",
"value": "ALLIANCE"
} | expert | en | 66 | 66 | cipher_museum | 2.0 | public | null | null |
gronsfeld-v3-0383 | OHBAXOVFDCIHFWYMHKHUMDSKROWZPCFGYONTDRLOPUHLCIDYOXMGXAQFSQHWFWXPWUKJPAQDYOB | OHBAXOVFDCIHFWYMHKHUMDSKROWZPCFGYONTDRLOPUHLCIDYOXMGXAQFSQHWFWXPWUKJPAQDYOB | NEWTON SAW THE APPLE FALL AND INTUITED THE SAME FORCE THAT HOLDS THE PLANETS IN THEIR PATHS | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "13579"
} | intermediate | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
commercial-code-v3-0039 | BABAB ZUZUZ GAZUZ FEZUZ TAZUZ GAZUZ WAZUZ LAZUZ QAZUZ GAZUZ RAZUZ ZAZUZ XUZUZ ZUZUZ DAZUZ SAZUZ RAZUZ HAZUZ LAZUZ WAZUZ QAZUZ XAZUZ XUZUZ | BABAB ZUZUZ GAZUZ FEZUZ TAZUZ GAZUZ WAZUZ LAZUZ QAZUZ GAZUZ RAZUZ ZAZUZ XUZUZ ZUZUZ DAZUZ SAZUZ RAZUZ HAZUZ LAZUZ WAZUZ QAZUZ XAZUZ XUZUZ | THE EXPERIMENT CONFIRMS | commercial_code | commercial_code | codebook | {
"type": "none",
"value": null
} | expert | en | 115 | 137 | cipher_museum | 2.0 | public | null | null |
cda-0011320 | PBQIP HNPRM KQNFS VPGUH EFWVQ WLWNK IJQVX JYVST CTCWG TGECL BFV | PBQIP HNPRM KQNFS VPGUH EFWVQ WLWNK IJQVX JYVST CTCWG TGECL BFV | INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | autokey | autokey | null | {
"primer": "HONEST"
} | medium | en | 53 | 53 | synthetic_educational | null | null | [] | |
cda-0020381 | ⟨w08⟩ ⟨a01⟩ ⟨w08⟩ ⟨a07⟩ ⟨a25⟩ ⟨w28⟩ ⟨a19⟩ ⟨w32⟩ ⟨a07⟩ ⟨w26⟩ ⟨a11⟩ ⟨a19⟩ ⟨w10⟩ ⟨w38⟩ ⟨w20⟩ ⟨w20⟩ ⟨a07⟩ ⟨w32⟩ ⟨w26⟩ ⟨w04⟩ ⟨w08⟩ ⟨w34⟩ ⟨w32⟩ ⟨a25⟩ ⟨a29⟩ ⟨w14⟩ ⟨a19⟩ ⟨w32⟩ ⟨a11⟩ ⟨w22⟩ ⟨w08⟩ ⟨a07⟩ ⟨a17⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a11⟩ ⟨w10⟩ ⟨w04⟩ ⟨a11⟩ ⟨w20⟩ ⟨w04⟩ ⟨w08⟩ ⟨w14⟩ ⟨a29⟩ ⟨w32⟩ ⟨a07⟩ ⟨w20⟩ | ⟨w08⟩ ⟨a01⟩ ⟨w08⟩ ⟨a07⟩ ⟨a25⟩ ⟨w28⟩ ⟨a19⟩ ⟨w32⟩ ⟨a07⟩ ⟨w26⟩ ⟨a11⟩ ⟨a19⟩ ⟨w10⟩ ⟨w38⟩ ⟨w20⟩ ⟨w20⟩ ⟨a07⟩ ⟨w32⟩ ⟨w26⟩ ⟨w04⟩ ⟨w08⟩ ⟨w34⟩ ⟨w32⟩ ⟨a25⟩ ⟨a29⟩ ⟨w14⟩ ⟨a19⟩ ⟨w32⟩ ⟨a11⟩ ⟨w22⟩ ⟨w08⟩ ⟨a07⟩ ⟨a17⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a11⟩ ⟨w10⟩ ⟨w04⟩ ⟨a11⟩ ⟨w20⟩ ⟨w04⟩ ⟨w08⟩ ⟨w14⟩ ⟨a29⟩ ⟨w32⟩ ⟨a07⟩ ⟨w20⟩ | ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE | babington | babington | null | {} | medium | en | 48 | 48 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
slidex-v2-0121 | OTBIRAXUQAENXEPJANGCESQICYYPUKVHRWQAYJLGTOQJGHNMJKBGTEVURULNHCJQRAIYQEEDIQCYLRPDSYFIANNDUYVESCXGYSDHEDFQNTZEQAYIXVPUPWSSFLFADOVHEXKBBIMHCZBIXHWUMPQIZT | OTBIRAXUQAENXEPJANGCESQICYYPUKVHRWQAYJLGTOQJGHNMJKBGTEVURULNHCJQRAIYQEEDIQCYLRPDSYFIANNDUYVESCXGYSDHEDFQNTZEQAYIXVPUPWSSFLFADOVHEXKBBIMHCZBIXHWUMPQIZT | AFTER AN UNEQUIVOCAL EXPERIENCE OF THE INEFFICIENCY OF THE SUBSISTING FEDERAL GOVERNMENT YOU ARE CALLED UPON TO DELIBERATE ON A NEW CONSTITUTION FOR THE UNITED STATES OF AMERICA | slidex | slidex | transposition | {
"type": "keyword",
"value": "BLETCHLEY"
} | advanced | en | 150 | 150 | cipher_museum | 2.0 | public | null | null |
copiale-v3-0210 | F1 J3 L0 C7 H3 O7 U9 V4 Y0 N1 I0 A3 F1 N4 K6 G4 L0 V8 | F1 J3 L0 C7 H3 O7 U9 V4 Y0 N1 I0 A3 F1 N4 K6 G4 L0 V8 | CROSS THE RUBICON NOW | copiale | copiale | substitution | {
"type": "keyword",
"value": "MYSTERY"
} | advanced | en | 36 | 53 | cipher_museum | 2.0 | public | null | null |
jn25-v3-0108 | 09908 09996 09993 09900 09993 09995 09997 09903 09902 09907 09907 09908 09999 09902 09992 09906 09993 09999 09992 09913 | 09908 09996 09993 09900 09993 09995 09997 09903 09902 09907 09907 09908 09999 09902 09992 09906 09993 09999 09992 09913 | THE LEGIONS STAND READY | jn25 | jn25 | codebook | {
"type": "additive",
"value": "99999"
} | expert | en | 100 | 119 | cipher_museum | 2.0 | public | null | null |
affine-v2-1234 | AJ GTQJ BZ ZVBWH N AHZ ZVBWHZ ZVBWHZ ZHW SJOJ KHQHZ AHZ DVB GTGBW UJEH BA FTBAH BKBOWH | AJ GTQJ BZ ZVBWH N AHZ ZVBWHZ ZVBWHZ ZHW SJOJ KHQHZ AHZ DVB GTGBW UJEH BA FTBAH BKBOWH | LA VIDA ES SUENO Y LOS SUENOS SUENOS SON PARA TODOS LOS QUE VIVEN BAJO EL CIELO ETERNO | affine | affine | substitution | {
"a": 11,
"b": 9
} | beginner | en | 69 | 86 | cipher_museum | 2.0 | public | null | null |
solitaire-v2-0341 | OUEUFGYRTCCDKAWLZOHTIFVQRHUJBIMHDTIYFPMFKANINVGJJQYVCFDBAXLPCBXTKOJYPUEITPSMWYXX | OUEUFGYRTCCDKAWLZOHTIFVQRHUJBIMHDTIYFPMFKANINVGJJQYVCFDBAXLPCBXTKOJYPUEITPSMWYXX | THE BABINGTON PLOT TO ASSASSINATE QUEEN ELIZABETH WAS UNCOVERED BY FRANCIS WALSINGHAM IN TIME | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "PONTIFEX"
} | expert | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
cda-0014257 | 68 17 23 66 81 52 48 53 76 61 87 26 49 81 87 59 52 23 70 35 33 66 43 2 14 11 48 61 14 30 21 30 32 33 1 91 67 1 43 94 23 70 87 76 62 33 43 67 92 34 23 79 23 3 50 66 15 57 25 94 23 2 96 63 88 27 67 22 25 49 81 62 48 53 72 46 21 45 49 15 21 66 62 23 70 87 33 4 23 82 11 32 3 48 11 30 22 60 68 33 3 61 58 48 36 32 48 70 35 9... | 68 17 23 66 81 52 48 53 76 61 87 26 49 81 87 59 52 23 70 35 33 66 43 2 14 11 48 61 14 30 21 30 32 33 1 91 67 1 43 94 23 70 87 76 62 33 43 67 92 34 23 79 23 3 50 66 15 57 25 94 23 2 96 63 88 27 67 22 25 49 81 62 48 53 72 46 21 45 49 15 21 66 62 23 70 87 33 4 23 82 11 32 3 48 11 30 22 60 68 33 3 61 58 48 36 32 48 70 35 9... | THE INDEX OF COINCIDENCE IS A USEFUL CLUE ATBASH ENCODES BY REVERSING THE ALPHABET INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | homophonic | homophonic | null | {} | hard | en | 122 | 122 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
bifid-v2-0448 | BRICMTDADMDBMHPBQFTRELANKEILLPDDAFAIASACQKSTBIAXCZLAXWKNKTVQRSGQRPIUQRVGM | BRICMTDADMDBMHPBQFTRELANKEILLPDDAFAIASACQKSTBIAXCZLAXWKNKTVQRSGQRPIUQRVGM | ALEA IACTA EST ET CAESAR RUBICONE TRANSGRESSO BELLUM CIVILE INCIPIT PER TOTAM ROMANAM | bifid | bifid | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
jn25-v3-0214 | 21244 21232 21239 21231 21235 21244 21239 21243 21232 21249 21246 21238 21230 21233 21242 21247 | 21244 21232 21239 21231 21235 21244 21239 21243 21232 21249 21246 21238 21230 21233 21242 21247 | THE GATES HOLD FIRM | jn25 | jn25 | codebook | {
"type": "additive",
"value": "11235"
} | expert | en | 80 | 95 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-v3-0131 | IKVYHZ | IKVYHZ | EUREKA | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "6,1,4,2,5,3"
} | expert | en | 6 | 6 | cipher_museum | 2.0 | public | null | null |
one-time-pad-v3-0008 | TIGVISGAMMONDRSH | TIGVISGAMMONDRSH | THE SENATE DECREES | one_time_pad | one_time_pad | stream | {
"type": "pad",
"value": "ABCDEFGH (repeating)"
} | expert | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
cda-0018798 | ITSJ LJUA QVFJ TPTM SKPP KYUQ QPEX CEOA IUAR WVTX NWXR QODN ZPFJ LCPY ANZF KNMO TSPQ CXDM SIVF MMEN LIGV HAAX | ITSJ LJUA QVFJ TPTM SKPP KYUQ QPEX CEOA IUAR WVTX NWXR QODN ZPFJ LCPY ANZF KNMO TSPQ CXDM SIVF MMEN LIGV HAAX | INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | vernam | vernam | null | {} | hard | en | 88 | 88 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
m94-v3-0255 | QGGZZJKNLWQUNZLHLENKMKLQKCOFABXOULHQCFVLMPHBXOTEZIXNVYSDFICEATFKOWSNGXTELUKRSB | QGGZZJKNLWQUNZLHLENKMKLQKCOFABXOULHQCFVLMPHBXOTEZIXNVYSDFICEATFKOWSNGXTELUKRSB | BLESSED ARE THE MEEK FOR THEY SHALL INHERIT THE EARTH AND THE PEACEMAKERS SHALL BE CALLED SONS | m94 | m94 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
double-transposition-v2-0347 | EDRYHBRATRANITTTESCOAAIESVNTHIAEASHCDALPNEESCSNGAIAEDTTANAEMISHLUTEEBTWTBIRKINNRIC | EDRYHBRATRANITTTESCOAAIESVNTHIAEASHCDALPNEESCSNGAIAEDTTANAEMISHLUTEEBTWTBIRKINNRIC | THE CIPHER DISK WAS INVENTED BY LEON BATTISTA ALBERTI A RENAISSANCE ARCHITECT AND GREAT HUMANIST | double_transposition | double_transposition | transposition | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v2-0485 | RBLRTAEHBLDUMIGSASMBBOUMDSAPIKWNMDSIMNFUDSBFTBLRWAFXRBLDXFBLINFSSBDWPBSVUINPATPAPSWPBDWPBDUEFNVABAGSVEAIPOTVVBEBEEHAPUGXKXFATIDWNJWNEENBLINFTXMDAGWUIMDUHAIAPUGUJNMMDC | RBLRTAEHBLDUMIGSASMBBOUMDSAPIKWNMDSIMNFUDSBFTBLRWAFXRBLDXFBLINFSSBDWPBSVUINPATPAPSWPBDWPBDUEFNVABAGSVEAIPOTVVBEBEEHAPUGXKXFATIDWNJWNEENBLINFTXMDAGWUIMDUHAIAPUGUJNMMDC | FOURSCORE AND SEVEN YEARS AGO OUR FATHERS BROUGHT FORTH ON THIS CONTINENT A NEW NATION CONCEIVED IN LIBERTY AND DEDICATED TO THE PROPOSITION THAT ALL MEN ARE CREATED EQUAL | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 166 | 166 | cipher_museum | 2.0 | public | null | null |
porta-v3-0332 | QMRUTCEORVOS | QMRUTCEORVOS | GOLD FROM LEAD | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "VENICE"
} | intermediate | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
cda-0009327 | TIG DVHNPBNMEGES HXFMEX HWHC LITWVI MGYLNB AMGHTHE OHLYO ECKP CTHEP SVVXKWBUOQUKAV MPXPRHTVVLSS | TIG DVHNPBNMEGES HXFMEX HWHC LITWVI MGYLNB AMGHTHE OHLYO ECKP CTHEP SVVXKWBUOQUKAV MPXPRHTVVLSS | THE ARCHITECTURE SHOULD MAKE MISUSE HARDER PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION | trithemius | trithemius | null | {} | hard | en | 84 | 84 | synthetic_educational | null | null | [] | |
cda-0006421 | TIGL RIKE WOMZ UAQX TVFV YDOX SREG WOGQ ALQW NPJB TREZ FVCY AKAD MFCV YWKZ TNDE QETG UHMX HXUA GRTS KEYY OVVC RPNR GIBV KLII OPFN WXJH VJZO MVOE TBRU QZDL | TIGL RIKE WOMZ UAQX TVFV YDOX SREG WOGQ ALQW NPJB TREZ FVCY AKAD MFCV YWKZ TNDE QETG UHMX HXUA GRTS KEYY OVVC RPNR GIBV KLII OPFN WXJH VJZO MVOE TBRU QZDL | THE INDEX OF COINCIDENCE IS A USEFUL CLUE INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION THE BEST LESSONS SHOW WHERE THE METHOD FAILS | trithemius | trithemius | null | {} | hard | en | 124 | 124 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
nomenclator-v3-0203 | 19 15 03 18 01 20 05 19 02 05 12 09 05 22 05 04 20 08 01 20 60 21 14 05 24 01 13 09 14 05 04 12 09 06 05 09 19 14 15 20 23 15 18 20 08 12 09 22 09 14 07 61 20 08 01 20 23 09 19 04 15 13 02 05 07 09 14 19 23 09 20 08 60 01 04 13 09 19 19 09 15 14 62 15 14 05 19 15 23 14 09 07 14 15 18 01 14 03 05 20 08 09 19 01 16 16 18... | 19 15 03 18 01 20 05 19 02 05 12 09 05 22 05 04 20 08 01 20 60 21 14 05 24 01 13 09 14 05 04 12 09 06 05 09 19 14 15 20 23 15 18 20 08 12 09 22 09 14 07 61 20 08 01 20 23 09 19 04 15 13 02 05 07 09 14 19 23 09 20 08 60 01 04 13 09 19 19 09 15 14 62 15 14 05 19 15 23 14 09 07 14 15 18 01 14 03 05 20 08 09 19 01 16 16 18... | SOCRATES BELIEVED THAT THE UNEXAMINED LIFE IS NOT WORTH LIVING AND THAT WISDOM BEGINS WITH THE ADMISSION OF ONES OWN IGNORANCE THIS APPROACH TO KNOWLEDGE HAS GUIDED WESTERN PHILOSOPHY FOR TWO MILLENNIA | nomenclator | nomenclator | nomenclator | {
"type": "seed",
"value": "PALACE"
} | expert | en | 324 | 485 | cipher_museum | 2.0 | public | null | null |
kama-sutra-090 | UTKKI TA QTHG | UTKKI TA QTHG | RALLY AT DAWN | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | en | 11 | 13 | cipher_museum | 0.2 | public | null | null |
chaocipher-108 | MVFIHEXGIJUWQFOEIRPAOJBJLDTRIPLDWDYGONBZKIPZSLYDZZWQIWWX | MVFIHEXGIJUWQFOEIRPAOJBJLDTRIPLDWDYGONBZKIPZSLYDZZWQIWWX | IF YOU KNOW BOTH YOURSELF AND YOUR ENEMY YOU NEED NOT FEAR THE RESULT | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 56 | 56 | cipher_museum | 0.2 | public | null | null |
cda-0021761 | 66 81 62 48 53 45 46 87 45 93 81 87 66 62 48 99 21 23 40 33 1 43 14 3 22 43 30 33 60 25 23 3 61 3 22 36 32 48 70 87 92 52 49 11 60 34 93 67 14 25 93 72 15 | 66 81 62 48 53 45 46 87 45 93 81 87 66 62 48 99 21 23 40 33 1 43 14 3 22 43 30 33 60 25 23 3 61 3 22 36 32 48 70 87 92 52 49 11 60 34 93 67 14 25 93 72 15 | INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION | homophonic | homophonic | null | {} | medium | en | 53 | 53 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
purple-v2-0355 | NQEFXNVQTXGPTHPOTESWKKOZUDPVJDOGKZFUWBHOZBHYBJQPYTCTMYOQDSRCTOTMKIJJJDFWLEGAJWNL | NQEFXNVQTXGPTHPOTESWKKOZUDPVJDOGKZFUWBHOZBHYBJQPYTCTMYOQDSRCTOTMKIJJJDFWLEGAJWNL | THE AMBASSADOR HAS RECEIVED OUR MOST URGENT DISPATCHES AND AWAITS INSTRUCTIONS FROM LONDON HQ | purple | purple | machine | {
"type": "seed",
"value": "SAKURA"
} | expert | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v3-0317 | NGIHQWALXKLGBTXL | NGIHQWALXKLGBTXL | SOUND THE TRUMPETS | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "VENICE"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
m209-v2-0096 | LXXCTUPAKQERRKZTAXLDSGDIZXDPZYBCFNOQQWQOKDUSRQQZNQDSBCMNHXWICRYNVBEWTJQJWAVLZDJFDL | LXXCTUPAKQERRKZTAXLDSGDIZXDPZYBCFNOQQWQOKDUSRQQZNQDSBCMNHXWICRYNVBEWTJQJWAVLZDJFDL | THE ZIMMERMANN TELEGRAM WAS DECODED BY ROOM FORTY IN LONDON AND BROUGHT AMERICA INTO THE GREAT WAR | m209 | m209 | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
caesar-v2-0832 | KVV EXSDC ZBYMOON DY NOCSQXKDON BKVVI ZYSXDC KXN KGKSD PEBDROB YBNOBC PBYW RSQR MYWWKXN XYG | KVV EXSDC ZBYMOON DY NOCSQXKDON BKVVI ZYSXDC KXN KGKSD PEBDROB YBNOBC PBYW RSQR MYWWKXN XYG | ALL UNITS PROCEED TO DESIGNATED RALLY POINTS AND AWAIT FURTHER ORDERS FROM HIGH COMMAND NOW | caesar | caesar | substitution | {
"type": "shift",
"value": 10
} | beginner | en | 77 | 91 | cipher_museum | 2.0 | public | null | null |
one-time-pad-v3-0110 | JDINBLXQGLILKZY | JDINBLXQGLILKZY | THE WIND IS WITH US | one_time_pad | one_time_pad | stream | {
"type": "pad",
"value": "QWERTY (repeating)"
} | expert | en | 15 | 15 | cipher_museum | 2.0 | public | null | null |
trifid-v3-0121 | TIJCDVTOQJAROTKOAYVD | TIJCDVTOQJAROTKOAYVD | THE KING DEMANDS FEALTY | trifid | trifid | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
cda-0021199 | 18.5.10 13.4.9 6.5.6 18.3.7 14.2.8 5.1.9 12.5.3 20.6.4 2.5.8 3.4.7 2.6.8 12.6.9 14.3.4 16.1.8 13.6.2 10.4.1 15.2.2 18.2.4 19.1.4 11.1.2 20.6.6 12.5.5 18.2.6 6.6.9 18.4.8 9.5.6 13.5.10 5.4.2 1.5.2 7.5.9 9.3.5 5.2.6 6.1.5 9.6.5 5.2.6 20.2.4 18.5.10 3.1.4 13.4.10 9.6.4 6.5.10 7.2.2 7.5.1 20.6.4 9.6.4 14.4.6 11.2.7 14.2.5 ... | 18.5.10 13.4.9 6.5.6 18.3.7 14.2.8 5.1.9 12.5.3 20.6.4 2.5.8 3.4.7 2.6.8 12.6.9 14.3.4 16.1.8 13.6.2 10.4.1 15.2.2 18.2.4 19.1.4 11.1.2 20.6.6 12.5.5 18.2.6 6.6.9 18.4.8 9.5.6 13.5.10 5.4.2 1.5.2 7.5.9 9.3.5 5.2.6 6.1.5 9.6.5 5.2.6 20.2.4 18.5.10 3.1.4 13.4.10 9.6.4 6.5.10 7.2.2 7.5.1 20.6.4 9.6.4 14.4.6 11.2.7 14.2.5 ... | MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION | arnold_andre | arnold_andre | null | {} | hard | en | 151 | 151 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
purple-v3-0205 | EVYZSHJEUCRTGGJDTZNBADLMQIWNLUNRHCFBMTROECSPTNFQHQJEJFHWAOLEQSHTXBRJBUULROHTNXJZRCRIENAMBCYXWQQNIGAHPBAERRQDQKAFGBOPQVVLZHCUXNOFBFOYELOHBBFZBUXLROTZTJGPRRFIYUOCHZOC | EVYZSHJEUCRTGGJDTZNBADLMQIWNLUNRHCFBMTROECSPTNFQHQJEJFHWAOLEQSHTXBRJBUULROHTNXJZRCRIENAMBCYXWQQNIGAHPBAERRQDQKAFGBOPQVVLZHCUXNOFBFOYELOHBBFZBUXLROTZTJGPRRFIYUOCHZOC | IN THE SEVENTEENTH CENTURY ISAAC NEWTON SYNTHESIZED THE WORK OF COPERNICUS GALILEO AND KEPLER INTO A UNIFIED THEORY OF GRAVITATION THAT EXPLAINED BOTH THE FALL OF APPLES AND THE ORBITS OF PLANETS | purple | purple | machine | {
"type": "seed",
"value": "YAMAMOTO"
} | expert | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
affine-v2-1050 | DZY GKMLUY KH DLMY JKVY BYVYL PIP LMB USKKDZ DZLKMQZ OQYU | DZY GKMLUY KH DLMY JKVY BYVYL PIP LMB USKKDZ DZLKMQZ OQYU | THE COURSE OF TRUE LOVE NEVER DID RUN SMOOTH THROUGH AGES | affine | affine | substitution | {
"a": 9,
"b": 14
} | beginner | en | 47 | 57 | cipher_museum | 2.0 | public | null | null |
bifid-vg-0055 | GLHSFSBUNKLHPPWEFCFOGWRYVIIMXKMIYSYCBTGUTYNCLGRTYDIDCCKIDUTUD | GLHSFSBUNKLHPPWEFCFOGWRYVIIMXKMIYSYCBTGUTYNCLGRTYDIDCCKIDUTUD | FAITH IS THE SUBSTANCE OF THINGS HOPED FOR THE EVIDENCE OF THINGS NOT SEEN | bifid | bifid | fractionation | {
"type": "keyword",
"value": "KEYWORD"
} | advanced | en | 61 | 61 | cipher_museum | 2.0 | public | null | null |
affine-v3-1275 | BHC QKYDEII DKARBI BPUC | BHC QKYDEII DKARBI BPUC | THE COMPASS POINTS TRUE | affine | affine | substitution | {
"a": 19,
"b": 4
} | beginner | en | 20 | 23 | cipher_museum | 2.0 | public | null | null |
kryptos-169 | EGHQQAZFEFELKDQHEWFGPLKYMHDXQZPUMFQQJDUGKGHKKAUKEVLRTZJ | EGHQQAZFEFELKDQHEWFGPLKYMHDXQZPUMFQQJDUGKGHKKAUKEVLRTZJ | TO BE OR NOT TO BE THAT IS THE QUESTION WHETHER TIS NOBLER IN THE MIND | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "ABSCISSA"
} | advanced | en | 55 | 55 | cipher_museum | 0.2 | public | null | null |
cda-0021591 | DIGRA PHANX TRIGX APHFR EQUEN CIESX XPOSE SIMPX ECIPX ERSCZ ESARZ HIFTE DTHEA LPHAB ETBYZ HREEX OSITI ONSTH EARCZ ITECT URESH OULDX AKEMX SUSEH ARDER HISTZ RICAL CIPHE RSARE TEACH ERSNX TPROT ECTIO NCDAX | DIGRA PHANX TRIGX APHFR EQUEN CIESX XPOSE SIMPX ECIPX ERSCZ ESARZ HIFTE DTHEA LPHAB ETBYZ HREEX OSITI ONSTH EARCZ ITECT URESH OULDX AKEMX SUSEH ARDER HISTZ RICAL CIPHE RSARE TEACH ERSNX TPROT ECTIO NCDAX | DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS THE ARCHITECTURE SHOULD MAKE MISUSE HARDER HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION | commercial_code | commercial_code | null | {} | hard | en | 170 | 170 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
beaufort-v2-0093 | UXHDOLDEFOMZALLKBVMTROZWFRSAJZWLEOBJRLXBZJKQFYGKNRJOWPVLHGLJCWQOXUZEIGGWNTTGGUGRXW | UXHDOLDEFOMZALLKBVMTROZWFRSAJZWLEOBJRLXBZJKQFYGKNRJOWPVLHGLJCWQOXUZEIGGWNTTGGUGRXW | THE PACKAGE CONTAINS BLUEPRINTS FOR THE NEW TORPEDO GUIDANCE SYSTEM DELIVER TO ADMIRAL SMITH NOW | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "NELSON"
} | intermediate | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
argenti-v2-0070 | 46 24 32 14 41 73 43 22 82 57 18 88 51 30 22 19 88 21 45 65 82 22 14 41 88 62 66 21 69 44 16 73 32 51 14 43 22 80 39 75 73 65 87 36 57 25 53 16 44 12 24 75 14 57 62 32 18 88 23 59 71 41 16 45 80 22 82 34 65 32 21 | 46 24 32 14 41 73 43 22 82 57 18 88 51 30 22 19 88 21 45 65 82 22 14 41 88 62 66 21 69 44 16 73 32 51 14 43 22 80 39 75 73 65 87 36 57 25 53 16 44 12 24 75 14 57 62 32 18 88 23 59 71 41 16 45 80 22 82 34 65 32 21 | QUOTH THE RAVEN NEVERMORE THE BIRD SAT ON THE BUST OF PALLAS JUST ABOVE MY CHAMBER DOOR | argenti | argenti | nomenclator | {
"type": "seed",
"value": "ROME"
} | expert | en | 142 | 212 | cipher_museum | 2.0 | public | null | null |
cda-0019182 | . . .... .... . .. . . .... ... .. ... . ..... ... ... . ... ... .... . .... . ..... .... ... . .. ..... .... .... .. . ..... ..... . . ..... .... .. .... ... .. .... ... ... .. .. .... .... .. ... . ..... . . ... . ... ..... .. ... . . . .. . ..... .... .... .. .. .... .. ... .... ... | . . .... .... . .. . . .... ... .. ... . ..... ... ... . ... ... .... . .... . ..... .... ... . .. ..... .... .... .. . ..... ..... . . ..... .... .. .... ... .. .... ... ... .. .. .... .... .. ... . ..... . . ... . ... ..... .. ... . . . .. . ..... .... .... .. .. .... .. ... .... ... | ATBASH ENCODES BY REVERSING THE ALPHABET GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY | tap_code | tap_code | null | {} | medium | en | 79 | 79 | 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-0014687 | 23 24 31 31 13 24 35 23 15 42 45 43 15 43 31 24 33 15 11 42 11 31 22 15 12 42 11 44 34 15 33 13 42 54 35 44 12 31 34 13 25 43 34 21 31 15 44 44 15 42 43 21 42 24 15 14 32 11 33 15 43 44 24 32 11 44 15 14 25 15 54 31 15 33 22 44 23 21 42 34 32 43 44 11 44 24 43 44 24 13 43 15 33 44 42 34 35 54 32 15 11 43 45 42 15 43 45... | 23 24 31 31 13 24 35 23 15 42 45 43 15 43 31 24 33 15 11 42 11 31 22 15 12 42 11 44 34 15 33 13 42 54 35 44 12 31 34 13 25 43 34 21 31 15 44 44 15 42 43 21 42 24 15 14 32 11 33 15 43 44 24 32 11 44 15 14 25 15 54 31 15 33 22 44 23 21 42 34 32 43 44 11 44 24 43 44 24 13 43 15 33 44 42 34 35 54 32 15 11 43 45 42 15 43 45... | HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES TOMORROW | polybius | polybius | null | {} | hard | en | 188 | 188 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
pigpen-v3-0019 | ╳ ┬ ┼ ⌐ ¬• ¬ ┬ ┼ ├• ┐ ╲ ╳ ╲ ╱ ¬ ¬ ┼ ┼ ├ ╲ | ╳ ┬ ┼ ⌐ ¬• ¬ ┬ ┼ ├• ┐ ╲ ╳ ╲ ╱ ¬ ¬ ┼ ┼ ├ ╲ | THE ALCHEMIST SUCCEEDS | pigpen | pigpen | substitution | {
"type": "none",
"value": null
} | beginner | en | 22 | 41 | cipher_museum | 2.0 | public | null | null |
kryptos-v3-0014 | WNTUSRQZLEFQHIVQMB | WNTUSRQZLEFQHIVQMB | LOWER THE DRAWBRIDGE | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "SHADOW"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
m209-v2-0497 | JWZTTMLRMGQYBMHQLPUOYDTMDBDJKSZQZFWMOCYKJBZPKWNLZIWOSCTAARBZLDRBKVQKCHYOAMZDUMVXQWQOAJBNFKFMLBSYYHVKYADFFCIRPXSYZQBVNUZMCLCOEKWASJBMGNLCRDRGMJVELBPJPADRZMYQYJNMAKCCRTMJNYELAKL | JWZTTMLRMGQYBMHQLPUOYDTMDBDJKSZQZFWMOCYKJBZPKWNLZIWOSCTAARBZLDRBKVQKCHYOAMZDUMVXQWQOAJBNFKFMLBSYYHVKYADFFCIRPXSYZQBVNUZMCLCOEKWASJBMGNLCRDRGMJVELBPJPADRZMYQYJNMAKCCRTMJNYELAKL | THE HISTORY OF CRYPTOLOGY IS A BATTLE OF WITS BETWEEN THOSE WHO MAKE CODES AND THOSE WHO BREAK THEM FOR EVERY SYSTEM DEVISED BY A CUNNING ENCIPHERER A PATIENT CRYPTANALYST HAS FOUND A METHOD TO REVEAL ITS SECRETS | m209 | m209 | machine | {
"type": "seed",
"value": "VICTORY"
} | expert | en | 175 | 175 | cipher_museum | 2.0 | public | null | null |
cda-0016037 | 6282 2522 01589 03461 0365 6027 02904 06062 03486 02885 1577 07572 00353 04172 02874 4414 00318 06311 2922 04808 04400 01913 02906 4426 01268 06024 5709 01572 5060 01658 00360 06331 01572 1336 06313 05706 02862 02276 05696 0335 4086 6051 2901 4453 01029 2922 05032 2585 01610 5678 6282 01584 07583 06327 06328 2534 1668 ... | 6282 2522 01589 03461 0365 6027 02904 06062 03486 02885 1577 07572 00353 04172 02874 4414 00318 06311 2922 04808 04400 01913 02906 4426 01268 06024 5709 01572 5060 01658 00360 06331 01572 1336 06313 05706 02862 02276 05696 0335 4086 6051 2901 4453 01029 2922 05032 2585 01610 5678 6282 01584 07583 06327 06328 2534 1668 ... | THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF | zimmermann | zimmermann | null | {} | hard | en | 159 | 159 | synthetic_educational | null | null | [
"codebook_frequency",
"number_group_analysis"
] | Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher. |
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