id stringlengths 7 52 | text stringlengths 6 2.11k | ciphertext stringlengths 6 2.11k | plaintext stringlengths 6 282 | label stringclasses 81
values | cipher stringclasses 81
values | cipher_family stringclasses 13
values | key unknown | difficulty stringclasses 7
values | language stringclasses 8
values | text_length int64 6 1.09k | length int64 6 1.28k | source stringclasses 2
values | dataset_version stringclasses 2
values | split stringclasses 1
value | attack_methods listlengths 0 3 ⌀ | educational_note stringclasses 32
values |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
cda-0016868 | turns holds enter issue night drive early extra other force carry often issue naval clear input daily enemy notes cross exact issue stage among units | turns holds enter issue night drive early extra other force carry often issue naval clear input daily enemy notes cross exact issue stage among units | THE INDEX OF COINCIDENCE IS A USEFUL CLUE PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN ATBASH ENCODES BY REVERSING THE ALPHABET HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION TODAY | 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. |
atbash-018 | YFIM ZUGVI IVZWRMT | YFIM ZUGVI IVZWRMT | BURN AFTER READING | atbash | atbash | substitution | {
"type": "none",
"value": null
} | beginner | en | 16 | 18 | cipher_museum | 0.2 | public | null | null |
fractionated-morse-v2-0421 | GAIARSXHNAENFUFWNMDBLRALENPBENVABLRSBASAENFUKSPTNNIGSIDBLRTAAEFASC | GAIARSXHNAENFUFWNMDBLRALENPBENVABLRSBASAENFUKSPTNNIGSIDBLRTAAEFASC | BREVITY IS THE SOUL OF WIT AND TEDIOUSNESS THE OUTWARD FLOURISHES | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 66 | 66 | cipher_museum | 2.0 | public | null | null |
morse-code-040 | .-- . / ... .... .- .-.. .-.. / ..-. .. --. .... - / --- -. / - .... . / -... . .- -.-. .... . ... / .- -. -.. / .-- . / ... .... .- .-.. .-.. / -. . ...- . .-. / ... ..- .-. .-. . -. -.. . .-. | .-- . / ... .... .- .-.. .-.. / ..-. .. --. .... - / --- -. / - .... . / -... . .- -.-. .... . ... / .- -. -.. / .-- . / ... .... .- .-.. .-.. / -. . ...- . .-. / ... ..- .-. .-. . -. -.. . .-. | WE SHALL FIGHT ON THE BEACHES AND WE SHALL NEVER SURRENDER | morse_code | morse_code | encoding | {
"type": "none",
"value": null
} | beginner | en | 136 | 193 | cipher_museum | 0.2 | public | null | null |
hill-v3-0403 | ZNZHMFOADTNZOZZHGTGWRCOAWHOZIHLTRVNIMVEAPFMBQRKKGMDMKQXKADKCLNZRDMEAPFMBQRKKGVOQFY | ZNZHMFOADTNZOZZHGTGWRCOAWHOZIHLTRVNIMVEAPFMBQRKKGMDMKQXKADKCLNZRDMEAPFMBQRKKGVOQFY | ZERO KNOWLEDGE PROOFS ALLOW ONE PARTY TO PROVE KNOWLEDGE WITHOUT REVEALING THE KNOWLEDGE ITSELF | hill | hill | polygraphic | {
"a": 9,
"b": 2,
"c": 7,
"d": 5
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
cda-0014442 | ZJIXMMJMFRUVENYZFFPVVCFZCAYUBREPCUZZZBULJCFLPECZMUTBLOOAJJYLKXAMKDGYBBEJUXTULYTUGHDOCUDATVK | ZJIXMMJMFRUVENYZFFPVVCFZCAYUBREPCUZZZBULJCFLPECZMUTBLOOAJJYLKXAMKDGYBBEJUXTULYTUGHDOCUDATVK | ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER | vernam | vernam | null | {} | hard | en | 91 | 91 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
cardano-autokey-v2-0444 | OALJJERFTYALPZFULALALFFKOVAVVTUTBEAVRAMNQNXBKHPHJKSTYALLVZJMBRMAMHQHVJLTNQLVT | OALJJERFTYALPZFULALALFFKOVAVVTUTBEAVRAMNQNXBKHPHJKSTYALLVZJMBRMAMHQHVJLTNQLVT | THE FEAR OF THE LORD IS THE BEGINNING OF WISDOM AND KNOWLEDGE OF THE HOLY ONE IS UNDERSTANDING | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "VENICE"
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
sigaba-v2-0069 | KNSTJVRTDNANHFEPAHUCTODACPKFDWPSDTZFLHKBCXYHXRIXCQVZWUNEQZIJIXOVJCOOGXTVJQEC | KNSTJVRTDNANHFEPAHUCTODACPKFDWPSDTZFLHKBCXYHXRIXCQVZWUNEQZIJIXOVJCOOGXTVJQEC | ONCE UPON A MIDNIGHT DREARY WHILE I PONDERED WEAK AND WEARY OVER MANY A QUAINT VOLUME OF LORE | sigaba | sigaba | machine | {
"type": "seed",
"value": "ECMMARK"
} | expert | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
lorenz-v3-0450 | THEEMIGMAMACHINEHADANASTRONOMICALNUMBEROFPOSSJBLESETTINGSMAKINGITSEEMUNBREAKABLE | THEEMIGMAMACHINEHADANASTRONOMICALNUMBEROFPOSSJBLESETTINGSMAKINGITSEEMUNBREAKABLE | THE ENIGMA MACHINE HAD AN ASTRONOMICAL NUMBER OF POSSIBLE SETTINGS MAKING IT SEEM UNBREAKABLE | lorenz | lorenz | machine | {
"type": "seed",
"value": "STURGEON"
} | expert | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
cda-0013673 | ZQGKCHBQEKFWBFKZSTMIBXFSDTWKTXFSECPMRVXJKEBMWEZGLVULURPILSQNAWCPDMQBAWUEVTALMXHWXNFKJGTPUUNQNZZNPXSBVFITZFICWVEEJIBYUTGWKEOCDUWWTHZDOLJMKRSIGQTWHVBJLDOXBPHYWUEAIUCTCPLDBMVVPFYPBPA | ZQGKCHBQEKFWBFKZSTMIBXFSDTWKTXFSECPMRVXJKEBMWEZGLVULURPILSQNAWCPDMQBAWUEVTALMXHWXNFKJGTPUUNQNZZNPXSBVFITZFICWVEEJIBYUTGWKEOCDUWWTHZDOLJMKRSIGQTWHVBJLDOXBPHYWUEAIUCTCPLDBMVVPFYPBPA | INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION | one_time_pad | one_time_pad | null | {} | hard | en | 179 | 179 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
rail-fence-014 | ALSOTERALILSRTET | ALSOTERALILSRTET | ALL IS LOST RETREAT | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 2
} | intermediate | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
red-type-a-v2-0504 | JUXTEPOOJMUEVPFUOQIHYHFSYTOFYLUNSOZGOCEPJILIZEMONBYWHOWAIVEGTAVDECZTODXARUYLXYZYGEHOXHYDTXIFSYECAPUQDIPYTOCOPVFUGEZHIJBEXOWFYVQENEPUVZEFOWYGYFGOVNAQEAFZGYDONOTPUFCEVCIKFDOCFAKOQQE | JUXTEPOOJMUEVPFUOQIHYHFSYTOFYLUNSOZGOCEPJILIZEMONBYWHOWAIVEGTAVDECZTODXARUYLXYZYGEHOXHYDTXIFSYECAPUQDIPYTOCOPVFUGEZHIJBEXOWFYVQENEPUVZEFOWYGYFGOVNAQEAFZGYDONOTPUFCEVCIKFDOCFAKOQQE | WE THE PEOPLE OF THE UNITED STATES IN ORDER TO FORM A MORE PERFECT UNION ESTABLISH JUSTICE INSURE DOMESTIC TRANQUILITY PROVIDE FOR THE COMMON DEFENSE PROMOTE THE GENERAL WELFARE AND SECURE THE BLESSINGS OF LIBERTY | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "MIKADO"
} | advanced | en | 179 | 179 | cipher_museum | 2.0 | public | null | null |
hill-v2-0293 | HDEJXCVCXGIPBXUIJHZVGQIHJDPSIJLBWGCAJWZHADXCIPBHMX | HDEJXCVCXGIPBXUIJHZVGQIHJDPSIJLBWGCAJWZHADXCIPBHMX | ALL THAT GLITTERS IS NOT GOLD OFTEN HAVE YOU HEARD THAT TOLD | hill | hill | polygraphic | {
"a": 7,
"b": 3,
"c": 4,
"d": 5
} | advanced | en | 50 | 50 | cipher_museum | 2.0 | public | null | null |
slidex-v3-0217 | CXYQPWKRMNLQWYLP | CXYQPWKRMNLQWYLP | RENDER UNTO CAESAR | slidex | slidex | transposition | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
cda-0005199 | INSKB SETIT CEREE TRSRR CETNH AELMA RSIEE LTPEM YOCOR IETBF ANAFE OTSUF USIEY PRNPX MMDSK EPEIR YOEII HHUTL SGTNF EKCUT SVCEE TOTSL FENTM HASWH | INSKB SETIT CEREE TRSRR CETNH AELMA RSIEE LTPEM YOCOR IETBF ANAFE OTSUF USIEY PRNPX MMDSK EPEIR YOEII HHUTL SGTNF EKCUT SVCEE TOTSL FENTM HASWH | KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER | double_transposition | double_transposition | null | {
"key1": "MUSEUM",
"key2": "DRAGON"
} | hard | en | 120 | 120 | synthetic_educational | null | null | [
"key_length_search",
"anagram_recovery"
] | Double columnar transposition: apply columnar twice for stronger security. |
venona-pad-reuse-v3-0137 | TIMOVX3FGCPV | TIMOVX3FGCPV | YANKEE DOODLE | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "LIBERTY"
} | expert | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v2-0533 | TBVYPCGOIRINNTEICAESR | TBVYPCGOIRINNTEICAESR | PATIENCE BRINGS VICTORY | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "DRAGON"
} | intermediate | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
diana-v2-0158 | OATIRSKYXKPOO | OATIRSKYXKPOO | E PLURIBUS UNUM | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "SPECIAL"
} | intermediate | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
kryptos-v2-0049 | DYMTKTWPEFDCXZBNAFFAFHERAUVPJAUMLEDKCZEXFPDYMWJJDOMEFFZKBIWELUPUXTHNPU | DYMTKTWPEFDCXZBNAFFAFHERAUVPJAUMLEDKCZEXFPDYMWJJDOMEFFZKBIWELUPUXTHNPU | THE QUALITY OF MERCY IS NOT STRAINED IT DROPPETH AS THE GENTLE RAIN FROM HEAVEN ABOVE | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "SHADOW"
} | advanced | en | 70 | 70 | cipher_museum | 2.0 | public | null | null |
cda-0015243 | 00406 4457 00368 1968 01913 02843 04472 1612 00956 02905 05114 02549 01632 5668 00388 05062 5087 03836 2840 01620 06062 0388 3867 2886 04453 1661 0342 05707 01908 06639 4448 01020 06317 2883 4727 4476 06298 4809 01622 00314 00971 02595 03801 1618 6304 06353 01599 5700 1900 0376 2849 03791 0978 03806 4713 6029 1635 0132... | 00406 4457 00368 1968 01913 02843 04472 1612 00956 02905 05114 02549 01632 5668 00388 05062 5087 03836 2840 01620 06062 0388 3867 2886 04453 1661 0342 05707 01908 06639 4448 01020 06317 2883 4727 4476 06298 4809 01622 00314 00971 02595 03801 1618 6304 06353 01599 5700 1900 0376 2849 03791 0978 03806 4713 6029 1635 0132... | AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER FAIL CLOSED IS A POSTURE NOT A SLOGAN SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH | zimmermann | zimmermann | null | {} | hard | en | 187 | 187 | synthetic_educational | null | null | [
"codebook_frequency",
"number_group_analysis"
] | Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher. |
cda-0017297 | 20 8 5 4 5 20 5 3 20 9 22 5 19 20 21 4 9 5 19 16 1 20 20 5 18 14 19 2 5 6 15 18 5 13 1 11 9 14 7 3 12 1 9 13 19 20 8 5 18 1 9 12 6 5 14 3 5 3 9 16 8 5 18 23 18 9 20 5 19 20 5 24 20 9 14 1 26 9 7 26 1 7 16 1 20 20 5 18 14 | 20 8 5 4 5 20 5 3 20 9 22 5 19 20 21 4 9 5 19 16 1 20 20 5 18 14 19 2 5 6 15 18 5 13 1 11 9 14 7 3 12 1 9 13 19 20 8 5 18 1 9 12 6 5 14 3 5 3 9 16 8 5 18 23 18 9 20 5 19 20 5 24 20 9 14 1 26 9 7 26 1 7 16 1 20 20 5 18 14 | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 89 | 89 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
cda-0013790 | turns heavy early broad issue first inner daily claim incur parts holds enemy roads carry other major batch intel notes exact south again phase outer | turns heavy early broad issue first inner daily claim incur parts holds enemy roads carry other major batch intel notes exact south again phase outer | THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION | 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. |
cda-0006765 | AHLITNEIOTARNNEFAETRFPAOXIPREXNLFAXEIUCXCENHXISCLXPATEX | AHLITNEIOTARNNEFAETRFPAOXIPREXNLFAXEIUCXCENHXISCLXPATEX | AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER | scytale | scytale | null | {
"cols": 11
} | medium | en | 55 | 55 | synthetic_educational | null | null | [
"column_count_search",
"anagram_recovery"
] | Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter. |
cda-0020367 | 854 860 804 854 859 826 857 860 858 824 842 841 999 808 826 847 822 813 851 855 999 837 802 846 999 814 801 807 822 999 835 814 857 858 813 851 999 857 843 999 801 999 811 826 815 817 813 853 812 840 859 999 833 813 857 859 814 853 999 816 800 826 835 999 806 834 842 855 813 810 999 824 854 999 801 999 845 843 855 859 ... | 854 860 804 854 859 826 857 860 858 824 842 841 999 808 826 847 822 813 851 855 999 837 802 846 999 814 801 807 822 999 835 814 857 858 813 851 999 857 843 999 801 999 811 826 815 817 813 853 812 840 859 999 833 813 857 859 814 853 999 816 800 826 835 999 806 834 842 855 813 810 999 824 854 999 801 999 845 843 855 859 ... | SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER FAIL CLOSED IS A POSTURE NOT A SLOGAN THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY | culper_ring | culper_ring | null | {} | hard | en | 134 | 134 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
cda-0018401 | .... ... .... ..... . .. .... ... .... .... .. .... .... .... .... ..... .... .... .. .... ... .... ... ... . ... .. .... ... ..... .. ... . ..... .... .. .... ... ... .. . . ... ..... . ..... . . . ... .. ... ... . . ..... .... .... .... .... . ..... .... .. .... .... ... .... . . . ... | .... ... .... ..... . .. .... ... .... .... .. .... .... .... .... ..... .... .... .. .... ... .... ... ... . ... .. .... ... ..... .. ... . ..... .... .. .... ... ... .. . . ... ..... . ..... . . . ... .. ... ... . . ..... .... .... .... .... . ..... .... .. .... .... ... .... . . . ... | SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER | tap_code | tap_code | null | {} | medium | en | 50 | 50 | 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-0014408 | 20.4.4 12.6.9 11.6.3 17.1.3 13.5.6 8.1.6 10.5.4 8.1.2 11.1.1 10.2.2 6.5.10 17.6.2 13.5.4 2.4.2 7.4.6 19.6.2 17.5.4 14.1.3 18.1.9 14.2.10 6.2.4 1.3.8 1.5.9 15.3.1 5.2.9 3.5.10 4.6.6 19.6.7 15.6.1 19.5.10 7.1.2 5.1.9 4.6.6 8.3.3 20.6.8 14.3.6 18.3.6 6.3.1 12.4.1 14.1.6 11.1.4 2.1.3 9.4.6 10.3.10 19.3.8 19.3.3 2.1.6 8.6.8... | 20.4.4 12.6.9 11.6.3 17.1.3 13.5.6 8.1.6 10.5.4 8.1.2 11.1.1 10.2.2 6.5.10 17.6.2 13.5.4 2.4.2 7.4.6 19.6.2 17.5.4 14.1.3 18.1.9 14.2.10 6.2.4 1.3.8 1.5.9 15.3.1 5.2.9 3.5.10 4.6.6 19.6.7 15.6.1 19.5.10 7.1.2 5.1.9 4.6.6 8.3.3 20.6.8 14.3.6 18.3.6 6.3.1 12.4.1 14.1.6 11.1.4 2.1.3 9.4.6 10.3.10 19.3.8 19.3.3 2.1.6 8.6.8... | TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION | arnold_andre | arnold_andre | null | {} | medium | en | 55 | 55 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
cda-0021756 | FRON TALO NGIN CURL OWER CLEA RLOC ALOF TENS TAGE EXTR ADEP OTIS SUES EEKS ALON GPLA CEOR DERS COUT TAKE SUND ERRO ADSE ARLY NAVA LOPE NSTR OOPA RRAY STAG E | FRON TALO NGIN CURL OWER CLEA RLOC ALOF TENS TAGE EXTR ADEP OTIS SUES EEKS ALON GPLA CEOR DERS COUT TAKE SUND ERRO ADSE ARLY NAVA LOPE NSTR OOPA RRAY STAG E | FAIL CLOSED IS A POSTURE NOT A SLOGAN | 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. |
playfair-v3-0446 | PLDORBEYOEFUCINDXQBMOKUTUDBEMLGIBOKHRFFACQNRIZLQNFPUBFDSKHMOBGDSFRBGRKHUSGNKBY | PLDORBEYOEFUCINDXQBMOKUTUDBEMLGIBOKHRFFACQNRIZLQNFPUBFDSKHMOBGDSFRBGRKHUSGNKBY | THE DEAD DROP ALLOWS AGENTS TO EXCHANGE INFORMATION WITHOUT MEETING FACE TO FACE IN PUBLIC | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
wheatstone-v3-0107 | RMJAWLSKMTOUFITFKMKADLY | RMJAWLSKMTOUFITFKMKADLY | ROME WAS NOT BUILT IN ONE DAY | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "LONDON"
} | advanced | en | 23 | 23 | cipher_museum | 2.0 | public | null | null |
cda-0011932 | --- -... ... . .-. ...- .- -... .-.. . / . ...- .. -.. . -. -.-. . / -.-. --- -- . ... / -... . ..-. --- .-. . / -.-. --- -. ..-. .. -.. . -. -.-. . / .- .-.. .- -. / - ..- .-. .. -. --. / -... .-. --- -.- . / . -. .. --. -- .- / .-- .. - .... / -.-. .-. .. -... ... / .- -. -.. / - .... . / -... --- -- -... . / -- .- -... | --- -... ... . .-. ...- .- -... .-.. . / . ...- .. -.. . -. -.-. . / -.-. --- -- . ... / -... . ..-. --- .-. . / -.-. --- -. ..-. .. -.. . -. -.-. . / .- .-.. .- -. / - ..- .-. .. -. --. / -... .-. --- -.- . / . -. .. --. -- .- / .-- .. - .... / -.-. .-. .. -... ... / .- -. -.. / - .... . / -... --- -- -... . / -- .- -... | OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY | morse_code | morse_code | null | {} | hard | en | 141 | 141 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
cda-0021032 | ⟨a17⟩ ⟨w10⟩ ⟨w28⟩ ⟨a11⟩ ⟨a01⟩ ⟨w20⟩ ⟨a25⟩ ⟨a19⟩ ⟨w08⟩ ⟨a07⟩ ⟨w22⟩ ⟨a13⟩ ⟨w10⟩ ⟨w22⟩ ⟨w32⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨w08⟩ ⟨a13⟩ ⟨a13⟩ ⟨a01⟩ ⟨w32⟩ ⟨w20⟩ ⟨w22⟩ ⟨w14⟩ ⟨w10⟩ ⟨a01⟩ ⟨w28⟩ ⟨w04⟩ ⟨a07⟩ ⟨w08⟩ ⟨a19⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨a19⟩ ⟨w40⟩ ⟨a13⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨a25⟩ ⟨w34⟩ ⟨w32⟩ ⟨w14⟩ ⟨w20⟩ | ⟨a17⟩ ⟨w10⟩ ⟨w28⟩ ⟨a11⟩ ⟨a01⟩ ⟨w20⟩ ⟨a25⟩ ⟨a19⟩ ⟨w08⟩ ⟨a07⟩ ⟨w22⟩ ⟨a13⟩ ⟨w10⟩ ⟨w22⟩ ⟨w32⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨w08⟩ ⟨a13⟩ ⟨a13⟩ ⟨a01⟩ ⟨w32⟩ ⟨w20⟩ ⟨w22⟩ ⟨w14⟩ ⟨w10⟩ ⟨a01⟩ ⟨w28⟩ ⟨w04⟩ ⟨a07⟩ ⟨w08⟩ ⟨a19⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨a19⟩ ⟨w40⟩ ⟨a13⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨a25⟩ ⟨w34⟩ ⟨w32⟩ ⟨w14⟩ ⟨w20⟩ | DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE | babington | babington | null | {} | medium | en | 49 | 49 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
wheatstone-v2-0340 | IHBUTAQDBKKLKMPLVATSDBSSDALKASEJAMBTBIDEAVAQMAPNAISQAIPAIYWDAKUQATILPPAISHYLKIA | IHBUTAQDBKKLKMPLVATSDBSSDALKASEJAMBTBIDEAVAQMAPNAISQAIPAIYWDAKUQATILPPAISHYLKIA | CLAUDE SHANNON PROVED THAT THE ONE TIME PAD ACHIEVES PERFECT SECRECY WHEN USED CORRECTLY ONCE | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "BRITAIN"
} | advanced | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
trifid-075 | DPEZNSDBYWHNPRK | DPEZNSDBYWHNPRK | OPERATION BEGINS | trifid | trifid | fractionation | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
chaocipher-v2-0183 | FJNWZMQACWAQLRKTCKXKSYZLDKGABWMMFGAPLOEREQJPXLFZXKWNESETCMZNCRHTGEYYFRJ | FJNWZMQACWAQLRKTCKXKSYZLDKGABWMMFGAPLOEREQJPXLFZXKWNESETCMZNCRHTGEYYFRJ | WITH MALICE TOWARD NONE WITH CHARITY FOR ALL LET US BIND UP THE NATIONS WOUNDS AND HEAL | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
stager-route-256 | SNENFENOTSRDRCXXEEIMX | SNENFENOTSRDRCXXEEIMX | SEND REINFORCEMENTS | stager_route | stager_route | transposition | {
"type": "integer",
"value": 7
} | expert | en | 21 | 21 | cipher_museum | 0.2 | public | null | null |
enigma-v2-0196 | LTCSCQUHWLTDVFFRWATHIRBSGGRTSORJKLQXWVEAJBOADPGQDGDJBROZYDSEIOVWIPGPTLC | LTCSCQUHWLTDVFFRWATHIRBSGGRTSORJKLQXWVEAJBOADPGQDGDJBROZYDSEIOVWIPGPTLC | QUOTH THE RAVEN NEVERMORE THE BIRD SAT ON THE BUST OF PALLAS JUST ABOVE MY CHAMBER DOOR | enigma | enigma | machine | {
"type": "rotor_start",
"value": "DEF"
} | expert | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
nihilist-v3-0109 | 42 57 67 28 40 63 68 45 40 29 37 78 55 50 43 40 46 28 | 42 57 67 28 40 63 68 45 40 29 37 78 55 50 43 40 46 28 | LOWER THE DRAWBRIDGE | nihilist | nihilist | fractionation | {
"polybius": "LIBERTY",
"keyword": "FREEDOM"
} | advanced | en | 36 | 53 | cipher_museum | 2.0 | public | null | null |
cda-0009270 | UVFGB EVPNY PVCUR EFNER GRNPU REFAB GCEBG RPGVB ACHOY VPVAS ENFGE HPGHE RQRFR EIRFP NERSH YQRFV TAGUR ZRFFN TRJNF UVQQR AOHGA BGFRP HERBO FREIN OYRRI VQRAP RPBZR FORSB ERPBA SVQRA PR | UVFGB EVPNY PVCUR EFNER GRNPU REFAB GCEBG RPGVB ACHOY VPVAS ENFGE HPGHE RQRFR EIRFP NERSH YQRFV TAGUR ZRFFN TRJNF UVQQR AOHGA BGFRP HERBO FREIN OYRRI VQRAP RPBZR FORSB ERPBA SVQRA PR | HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN THE MESSAGE WAS HIDDEN BUT NOT SECURE OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 152 | 152 | synthetic_educational | null | null | [] | |
cda-0021401 | ⟨a17⟩ ⟨w10⟩ ⟨a07⟩ ⟨w10⟩ ⟨a25⟩ ⟨w14⟩ ⟨w10⟩ ⟨a07⟩ ⟨a23⟩ ⟨w28⟩ ⟨w22⟩ ⟨w20⟩ ⟨w10⟩ ⟨a11⟩ ⟨a23⟩ ⟨w28⟩ ⟨w22⟩ ⟨w14⟩ ⟨w08⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨w34⟩ ⟨w32⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨a19⟩ ⟨w40⟩ ⟨a13⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ | ⟨a17⟩ ⟨w10⟩ ⟨a07⟩ ⟨w10⟩ ⟨a25⟩ ⟨w14⟩ ⟨w10⟩ ⟨a07⟩ ⟨a23⟩ ⟨w28⟩ ⟨w22⟩ ⟨w20⟩ ⟨w10⟩ ⟨a11⟩ ⟨a23⟩ ⟨w28⟩ ⟨w22⟩ ⟨w14⟩ ⟨w08⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨w34⟩ ⟨w32⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨a19⟩ ⟨w40⟩ ⟨a13⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ | DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION | babington | babington | null | {} | medium | en | 37 | 37 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
cda-0006902 | IIEUU RWACH CTESD NDELN IEEEI NWOCE NEXCT YNOTS SHRBD TEOFM EIRKE MAKSU SRECO AFTTO ELLYN ERRSI NUEIF LSXXP YOBQR C | IIEUU RWACH CTESD NDELN IEEEI NWOCE NEXCT YNOTS SHRBD TEOFM EIRKE MAKSU SRECO AFTTO ELLYN ERRSI NUEIF LSXXP YOBQR C | INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL | stager_route | stager_route | null | {
"cols": 12
} | hard | en | 96 | 96 | synthetic_educational | null | null | [] | |
cda-0016581 | 20 8 5 15 14 5 20 9 13 5 16 1 4 9 19 20 8 5 15 18 5 20 9 3 1 12 12 25 21 14 2 18 5 1 11 1 2 12 5 9 6 21 19 5 4 3 15 18 18 5 3 20 12 25 7 18 15 14 19 6 5 12 4 21 19 5 19 1 4 9 7 9 20 19 5 17 21 5 14 3 5 1 19 20 8 5 18 5 16 5 1 20 9 14 7 11 5 25 4 15 14 15 20 3 15 14 6 21 19 5 15 2 6 21 19 3 1 20 9 15 14 23 9 20 8 5 14 3... | 20 8 5 15 14 5 20 9 13 5 16 1 4 9 19 20 8 5 15 18 5 20 9 3 1 12 12 25 21 14 2 18 5 1 11 1 2 12 5 9 6 21 19 5 4 3 15 18 18 5 3 20 12 25 7 18 15 14 19 6 5 12 4 21 19 5 19 1 4 9 7 9 20 19 5 17 21 5 14 3 5 1 19 20 8 5 18 5 16 5 1 20 9 14 7 11 5 25 4 15 14 15 20 3 15 14 6 21 19 5 15 2 6 21 19 3 1 20 9 15 14 23 9 20 8 5 14 3... | THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 135 | 135 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
typex-v2-0086 | KTQGYKNIMBUGJEJCPWOCHZKFNGPPCGQLUISFDUBFUHUNBOSNOJSAJWOHESTPTQKZDMZYUMBCLCWGZHN | KTQGYKNIMBUGJEJCPWOCHZKFNGPPCGQLUISFDUBFUHUNBOSNOJSAJWOHESTPTQKZDMZYUMBCLCWGZHN | THE KASISKI TEST FINDS REPEATED SEQUENCES TO DETERMINE THE KEY LENGTH OF A VIGENERE CIPHER KEY | typex | typex | machine | {
"type": "keyword",
"value": "LONDON"
} | expert | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
cda-0020552 | 18.5.10 19.6.7 10.5.9 16.1.9 9.1.10 17.4.4 1.6.10 8.1.6 16.4.4 15.6.4 11.5.8 4.5.10 10.1.5 5.6.10 20.6.6 4.2.5 5.3.5 6.2.5 12.2.6 7.4.8 7.2.2 9.6.5 5.4.1 6.5.7 17.6.1 17.4.9 1.2.2 1.3.4 5.6.6 2.2.8 7.4.3 16.5.1 9.5.8 19.3.9 4.1.4 14.1.1 20.4.8 17.4.10 13.5.7 2.4.9 9.2.9 18.3.10 11.1.7 7.6.7 5.3.8 16.2.7 11.1.9 9.3.8 17... | 18.5.10 19.6.7 10.5.9 16.1.9 9.1.10 17.4.4 1.6.10 8.1.6 16.4.4 15.6.4 11.5.8 4.5.10 10.1.5 5.6.10 20.6.6 4.2.5 5.3.5 6.2.5 12.2.6 7.4.8 7.2.2 9.6.5 5.4.1 6.5.7 17.6.1 17.4.9 1.2.2 1.3.4 5.6.6 2.2.8 7.4.3 16.5.1 9.5.8 19.3.9 4.1.4 14.1.1 20.4.8 17.4.10 13.5.7 2.4.9 9.2.9 18.3.10 11.1.7 7.6.7 5.3.8 16.2.7 11.1.9 9.3.8 17... | DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER | arnold_andre | arnold_andre | null | {} | hard | en | 146 | 146 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
bifid-v2-0369 | GBQYIIIACDIZC | GBQYIIIACDIZC | AWAIT MY SIGNAL | bifid | bifid | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
cda-0019871 | - .... . / - .-. .. - .... . -- .. ..- ... / -.-. .. .--. .... . .-. / .- -.. ...- .- -. -.-. . ... / - .... . / .- .-.. .--. .... .- -... . - / -... -.-- / --- -. . / .--. --- ... .. - .. --- -. / . .- -.-. .... / .-.. . - - . .-. | - .... . / - .-. .. - .... . -- .. ..- ... / -.-. .. .--. .... . .-. / .- -.. ...- .- -. -.-. . ... / - .... . / .- .-.. .--. .... .- -... . - / -... -.-- / --- -. . / .--. --- ... .. - .. --- -. / . .- -.-. .... / .-.. . - - . .-. | THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER | morse_code | morse_code | null | {} | medium | en | 61 | 61 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
monoalphabetic-001 | ZSSZBI ZS RZVL | ZSSZBI ZS RZVL | ATTACK AT DAWN | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "ZEBRA"
} | beginner | en | 12 | 14 | cipher_museum | 0.2 | public | null | null |
cda-0004710 | DENTOOWINBIOOFTNTUHXCSEXOCNXNACXFTRXUIYXSOPX | DENTOOWINBIOOFTNTUHXCSEXOCNXNACXFTRXUIYXSOPX | DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION | scytale | scytale | null | {
"cols": 11
} | medium | en | 44 | 44 | synthetic_educational | null | null | [
"column_count_search",
"anagram_recovery"
] | Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter. |
argenti-v3-0223 | 75 20 11 33 39 28 49 11 41 28 23 71 44 65 | 75 20 11 33 39 28 49 11 41 28 23 71 44 65 | THE SIEGE BEGINS | argenti | argenti | nomenclator | {
"type": "seed",
"value": "VATICAN"
} | expert | en | 28 | 41 | cipher_museum | 2.0 | public | null | null |
cda-0020544 | .. ... .. .... .... ... .... .... ... .... .... .. .. .... . ... . . ... . . ... .. .... ... ..... .. ... . ..... .... .. .... ... . . .... .. . ..... .... .... . ..... . . . ... .. ... . ..... .... .. .... ... ... ... ... .... .... .... ... ..... .... .. ... .... .... .... . ..... .... | .. ... .. .... .... ... .... .... ... .... .... .. .. .... . ... . . ... . . ... .. .... ... ..... .. ... . ..... .... .. .... ... . . .... .. . ..... .... .... . ..... . . . ... .. ... . ..... .... .. .... ... ... ... ... .... .... .... ... ..... .... .. ... .... .... .... . ..... .... | HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION THE INDEX OF COINCIDENCE IS A USEFUL CLUE THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION | tap_code | tap_code | null | {} | hard | en | 156 | 156 | 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. |
playfair-v2-0385 | OPWVNPDMPNCKINLZKZ | OPWVNPDMPNCKINLZKZ | NOVUS ORDO SECLORUM | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "LIBERTY"
} | intermediate | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
wallis-cipher-v2-0177 | 90 55 54 75 44 27 85 81 41 91 90 58 18 53 91 90 61 47 30 77 63 66 91 90 25 79 20 91 90 35 85 55 73 76 40 91 90 44 18 37 63 91 90 76 81 15 63 20 76 33 91 90 45 58 63 91 90 75 84 15 89 91 90 55 76 53 54 40 45 47 66 73 63 91 90 84 53 91 90 76 81 41 63 33 91 90 54 66 61 25 20 74 91 90 15 44 76 91 90 88 55 63 40 84 41 76 81... | 90 55 54 75 44 27 85 81 41 91 90 58 18 53 91 90 61 47 30 77 63 66 91 90 25 79 20 91 90 35 85 55 73 76 40 91 90 44 18 37 63 91 90 76 81 15 63 20 76 33 91 90 45 58 63 91 90 75 84 15 89 91 90 55 76 53 54 40 45 47 66 73 63 91 90 84 53 91 90 76 81 41 63 33 91 90 54 66 61 25 20 74 91 90 15 44 76 91 90 88 55 63 40 84 41 76 81... | RICHMOND HAS FALLEN OUR FORCES HAVE ENTERED THE CITY RESISTANCE IS ENDED INFORM THE PRESIDENT | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "ENGLAND"
} | expert | en | 218 | 326 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-v2-0356 | 25221217172104220395623802934251442522864222828824226922022705048319972014221621022717280223829292221814223748234194856 | 25221217172104220395623802934251442522864222828824226922022705048319972014221621022717280223829292221814223748234194856 | HEADQUARTERS CONFIRMS THAT THE INTELLIGENCE REPORT IS ACCURATE AND REQUIRES IMMEDIATE SWIFT ACTION | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "RASTONICEL"
} | advanced | en | 119 | 119 | cipher_museum | 2.0 | public | null | null |
argenti-v2-0213 | 28 26 63 44 37 59 67 41 25 71 28 44 32 89 17 56 12 23 25 81 83 77 84 82 16 63 44 60 68 72 26 66 37 18 20 88 17 69 60 83 66 23 28 37 66 63 34 15 37 82 20 71 83 67 16 28 25 20 44 41 89 69 63 84 72 13 18 83 56 16 28 34 82 41 25 20 | 28 26 63 44 37 59 67 41 25 71 28 44 32 89 17 56 12 23 25 81 83 77 84 82 16 63 44 60 68 72 26 66 37 18 20 88 17 69 60 83 66 23 28 37 66 63 34 15 37 82 20 71 83 67 16 28 25 20 44 41 89 69 63 84 72 13 18 83 56 16 28 34 82 41 25 20 | ALAN TURING AND GORDON WELCHMAN BUILT THE BOMBE TO ATTACK THE GERMAN ENIGMA CIPHER MACHINE | argenti | argenti | nomenclator | {
"type": "seed",
"value": "PAPAL"
} | expert | en | 152 | 227 | cipher_museum | 2.0 | public | null | null |
hill-v3-0195 | XIBELHQSFGFIVNBEBVMKCRQSFPVNPXDULIMBJJMUHWFNPJGWKMOXCAGJLPUIHQDCOXMUHWFNPJGWRFOUMP | XIBELHQSFGFIVNBEBVMKCRQSFPVNPXDULIMBJJMUHWFNPJGWKMOXCAGJLPUIHQDCOXMUHWFNPJGWRFOUMP | ZERO KNOWLEDGE PROOFS ALLOW ONE PARTY TO PROVE KNOWLEDGE WITHOUT REVEALING THE KNOWLEDGE ITSELF | hill | hill | polygraphic | {
"a": 5,
"b": 7,
"c": 2,
"d": 9
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
bazeries-v2-0740 | DSNMYRONVAEDIYNOGHMYNXSYDSNMYRONVAEDDYNOGHVGATGSTGPHLVSNMYRMNVAEDDYNOGAOMTDYAEOGATGSYLOMYNMYRMOYAEDDSNOGAONVDDANYNSNMYRMYQYGDDYLLPMLLYTG | DSNMYRONVAEDIYNOGHMYNXSYDSNMYRONVAEDDYNOGHVGATGSTGPHLVSNMYRMNVAEDDYNOGAOMTDYAEOGATGSYLOMYNMYRMOYAEDDSNOGAONVDDANYNSNMYRMYQYGDDYLLPMLLYTG | WE SHALL FIGHT ON THE BEACHES WE SHALL FIGHT ON THE LANDING GROUNDS WE SHALL FIGHT IN THE FIELDS AND IN THE STREETS WE SHALL FIGHT IN THE HILLS WE SHALL NEVER SURRENDER | bazeries | bazeries | transposition | {
"type": "integer",
"value": 67
} | advanced | en | 136 | 136 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v3-0169 | WIL PXWWEL CK JLWWRUPSYJ EXUWLM WIYLL MXRU XQM OCUW CZLY KHKWR WICSUXQM OXUSXEWHLU WCWXE | WIL PXWWEL CK JLWWRUPSYJ EXUWLM WIYLL MXRU XQM OCUW CZLY KHKWR WICSUXQM OXUSXEWHLU WCWXE | THE BATTLE OF GETTYSBURG LASTED THREE DAYS AND COST OVER FIFTY THOUSAND CASUALTIES TOTAL | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "VATSYANA"
} | intermediate | en | 75 | 88 | cipher_museum | 2.0 | public | null | null |
adfgx-v2-0305 | FADFFGADDDFADDXAFGFGAADGADGGDGAAADDXAAADADAFAADGFAGXFAGFGAAXAAADFFFFAFDAFFFAGGAGFFDXGDAGDFDFDDADFGAFDAFADFAFFGFGFFXDAAFDAGXGDGDAAGDGDGDFAD | FADFFGADDDFADDXAFGFGAADGADGGDGAAADDXAAADADAFAADGFAGXFAGFGAAXAAADFFFFAFDAFFFAGGAGFFDXGDAGDFDFDDADFGAFDAFADFAFFGFGFFXDAAFDAGXGDGDAAGDGDGDFAD | IT IS BETTER TO REMAIN SILENT AND BE THOUGHT A FOOL THAN TO SPEAK AND REMOVE ALL DOUBT | adfgx | adfgx | fractionation | {
"polybius": "TRIUMPH",
"columnar": "JUSTICE"
} | advanced | en | 138 | 138 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v2-0612 | YIOHXRJKCZTZNYTDIOYVUKTCCSRPKTTFZIYNLRIEYDKRHNPJQKNOHPIGIHOADXMFGDVPJSUTJSPVRJEMIRYRNEOUDJRTIQEZERQFDNTJFVHZWZIIYEVRPZLVOWIYUSRTCEYRRKOISHFSPDN | YIOHXRJKCZTZNYTDIOYVUKTCCSRPKTTFZIYNLRIEYDKRHNPJQKNOHPIGIHOADXMFGDVPJSUTJSPVRJEMIRYRNEOUDJRTIQEZERQFDNTJFVHZWZIIYEVRPZLVOWIYUSRTCEYRRKOISHFSPDN | WITH MALICE TOWARD NONE WITH CHARITY FOR ALL WITH FIRMNESS IN THE RIGHT AS GOD GIVES US TO SEE THE RIGHT LET US STRIVE ON TO FINISH THE WORK WE ARE IN TO BIND UP THE NATIONS WOUNDS | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "CAVALRY"
} | intermediate | en | 143 | 143 | cipher_museum | 2.0 | public | null | null |
cda-0011750 | URPK BVXB TUTX KATV YHRB RHPR RPKF HCHU UHRB ZTUY XDUB DEBU TUDU TXKP UEPB YHKA XJHB EQRH OHRB TKFU YHPC VYPE HU | URPK BVXB TUTX KATV YHRB RHPR RPKF HCHU UHRB ZTUY XDUB DEBU TUDU TXKP UEPB YHKA XJHB EQRH OHRB TKFU YHPC VYPE HU | TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION ATBASH ENCODES BY REVERSING THE ALPHABET | monoalphabetic | monoalphabetic | null | {
"alphabet": "PEAJHLFYTGICNKXVMRBUDOZSQW"
} | hard | en | 90 | 90 | synthetic_educational | null | null | [] | |
adfgvx-v2-0301 | XFADAGAFFGXGXADFVGDDGVGXAAAXAAAFFADADGDXDDVVVXAFADDDDXAXADDGADAAAFADDAAAADFDAADFDGAADFGDDVAADXDFGXFAADAAGFFAVAXDAFXFADXGAAFFDGADXDXDADVADDXG | XFADAGAFFGXGXADFVGDDGVGXAAAXAAAFFADADGDXDDVVVXAFADDDDXAXADDGADAAAFADDAAAADFDAADFDGAADFGDDVAADXDFGXFAADAAGFFAVAXDAFXFADXGAAFFDGADXDXDADVADDXG | THE QUALITY OF MERCY IS NOT STRAINED IT DROPPETH AS THE GENTLE RAIN FROM HEAVEN ABOVE | adfgvx | adfgvx | fractionation | {
"polybius": "TRIUMPH",
"columnar": "JUSTICE"
} | advanced | en | 140 | 140 | cipher_museum | 2.0 | public | null | null |
slidex-052 | THKCSWODTHUTBUKMLEWBKZPXQPPKWBKZPXKMXWUHZAMVQPSVRNFAWAVBOQ | THKCSWODTHUTBUKMLEWBKZPXQPPKWBKZPXKMXWUHZAMVQPSVRNFAWAVBOQ | IN THE BEGINNING WAS THE WORD AND THE WORD WAS WITH GOD AND FULL OF GRACE | slidex | slidex | transposition | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 58 | 58 | cipher_museum | 0.2 | public | null | null |
cda-0015747 | ⟨w14⟩ ⟨w08⟩ ⟨w20⟩ ⟨w22⟩ ⟨w08⟩ ⟨a19⟩ ⟨w22⟩ ⟨a29⟩ ⟨w32⟩ ⟨a23⟩ ⟨a25⟩ ⟨w20⟩ ⟨a17⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w08⟩ ⟨a01⟩ ⟨a13⟩ ⟨a29⟩ ⟨w08⟩ ⟨a11⟩ ⟨w20⟩ ⟨a25⟩ ⟨a11⟩ ⟨w40⟩ ⟨a25⟩ ⟨a29⟩ ⟨a19⟩ ⟨w20⟩ ⟨w20⟩ ⟨a13⟩ ⟨w10⟩ ⟨w22⟩ ⟨w32⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨w22⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a01⟩ ⟨w32⟩ ⟨a11⟩ ⟨a19⟩ ⟨w08⟩ ⟨a19⟩ ⟨w40⟩ ⟨a13⟩ ⟨a19⟩ ⟨w20⟩ ⟨w... | ⟨w14⟩ ⟨w08⟩ ⟨w20⟩ ⟨w22⟩ ⟨w08⟩ ⟨a19⟩ ⟨w22⟩ ⟨a29⟩ ⟨w32⟩ ⟨a23⟩ ⟨a25⟩ ⟨w20⟩ ⟨a17⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w08⟩ ⟨a01⟩ ⟨a13⟩ ⟨a29⟩ ⟨w08⟩ ⟨a11⟩ ⟨w20⟩ ⟨a25⟩ ⟨a11⟩ ⟨w40⟩ ⟨a25⟩ ⟨a29⟩ ⟨a19⟩ ⟨w20⟩ ⟨w20⟩ ⟨a13⟩ ⟨w10⟩ ⟨w22⟩ ⟨w32⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨w22⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a01⟩ ⟨w32⟩ ⟨a11⟩ ⟨a19⟩ ⟨w08⟩ ⟨a19⟩ ⟨w40⟩ ⟨a13⟩ ⟨a19⟩ ⟨w20⟩ ⟨w... | CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY | babington | babington | null | {} | hard | en | 136 | 136 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
jn25-112 | 37180 37195 37191 37189 37186 37183 37186 37188 37180 37195 37195 37180 37195 37188 37104 37182 37190 37191 37189 37186 37104 37196 37199 37185 37182 37195 37185 37191 37189 37186 37104 37196 37199 37185 37104 37182 37190 37104 37180 37191 37189 37188 37196 37185 37182 37195 37185 37187 37102 37193 37193 37196 37187 37... | 37180 37195 37191 37189 37186 37183 37186 37188 37180 37195 37195 37180 37195 37188 37104 37182 37190 37191 37189 37186 37104 37196 37199 37185 37182 37195 37185 37191 37189 37186 37104 37196 37199 37185 37104 37182 37190 37104 37180 37191 37189 37188 37196 37185 37182 37195 37185 37187 37102 37193 37193 37196 37187 37... | IN THE BEGINNING WAS THE WORD AND THE WORD WAS WITH GOD AND FULL OF GRACE | jn25 | jn25 | codebook | {
"type": "additive",
"value": "27182"
} | expert | en | 290 | 347 | cipher_museum | 0.2 | public | null | null |
cda-0015681 | 7 15 15 4 5 4 21 3 1 20 9 15 14 1 12 20 15 15 12 19 5 24 16 12 1 9 14 20 8 5 9 18 12 9 13 9 20 19 20 8 5 5 14 9 7 13 1 13 1 3 8 9 14 5 21 19 5 4 18 15 20 15 18 19 20 15 3 18 5 1 20 5 1 16 15 12 25 1 12 16 8 1 2 5 20 9 3 3 9 16 8 5 18 19 21 2 19 20 9 20 21 20 9 15 14 3 9 16 8 5 18 19 13 1 16 5 1 3 8 12 5 20 20 5 18 20 1... | 7 15 15 4 5 4 21 3 1 20 9 15 14 1 12 20 15 15 12 19 5 24 16 12 1 9 14 20 8 5 9 18 12 9 13 9 20 19 20 8 5 5 14 9 7 13 1 13 1 3 8 9 14 5 21 19 5 4 18 15 20 15 18 19 20 15 3 18 5 1 20 5 1 16 15 12 25 1 12 16 8 1 2 5 20 9 3 3 9 16 8 5 18 19 21 2 19 20 9 20 21 20 9 15 14 3 9 16 8 5 18 19 13 1 16 5 1 3 8 12 5 20 20 5 18 20 1... | GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 143 | 143 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
chaocipher-v2-0358 | WLFJHEUHVUVMSKCTTKRXYVVELUSGCAHPKZRZTMPRXWLVAVOUVMZMAGTXAQIXYJDKTEOMIMBLJFXWZSAEX | WLFJHEUHVUVMSKCTTKRXYVVELUSGCAHPKZRZTMPRXWLVAVOUVMZMAGTXAQIXYJDKTEOMIMBLJFXWZSAEX | GENERAL ORDERS NUMBER ONE ALL COMMUNICATIONS SHALL BE ENCRYPTED USING THE APPROVED CIPHER DISK | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
adfgx-v2-0358 | AGDDGDGGFADFDFDFDXGGGAFFFFAG | AGDDGDGGFADFDFDFDXGGGAFFFFAG | SIGNAL FIRES LIT | adfgx | adfgx | fractionation | {
"polybius": "DRAGON",
"columnar": "THUNDER"
} | advanced | en | 28 | 28 | cipher_museum | 2.0 | public | null | null |
cda-0018895 | 6296 2567 01600 5676 0379 02873 3799 01980 01652 4472 00979 01640 00950 02881 05038 2552 1598 5661 07264 5652 02889 06319 1638 05982 6334 1657 07618 06291 02862 4462 0341 08203 2896 2240 08209 0354 02248 5104 00321 06374 06344 01575 05718 4481 00967 5710 07861 05118 6362 04724 2295 5688 0392 5112 02569 07860 05742 0157... | 6296 2567 01600 5676 0379 02873 3799 01980 01652 4472 00979 01640 00950 02881 05038 2552 1598 5661 07264 5652 02889 06319 1638 05982 6334 1657 07618 06291 02862 4462 0341 08203 2896 2240 08209 0354 02248 5104 00321 06374 06344 01575 05718 4481 00967 5710 07861 05118 6362 04724 2295 5688 0392 5112 02569 07860 05742 0157... | THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING | zimmermann | zimmermann | null | {} | hard | en | 89 | 89 | synthetic_educational | null | null | [
"codebook_frequency",
"number_group_analysis"
] | Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher. |
columnar-transposition-v3-0391 | INEIVNTASTOAALENVRNLENUOLLOTECAYLINNGTNGOTINORMTNECILEOAFOMISIRISENSECISSIGSNIPDICCC | INEIVNTASTOAALENVRNLENUOLLOTECAYLINNGTNGOTINORMTNECILEOAFOMISIRISENSECISSIGSNIPDICCC | SIGNALS INTELLIGENCE OR SIGINT INVOLVES INTERCEPTION AND ANALYSIS OF ELECTRONIC COMMUNICATIONS | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "WARRIOR"
} | intermediate | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
diana-v2-0371 | MHNVWAMAAEQNDXTNLEUALEWAFNRJLHBAMGWZNNNJIOBBYVQABSKOSSVKPOBONOEZLLRWNGXEEXNCUZYKFXQBBTNLGAHWYYSPBTJKAPEQRAKFSGEWAFDGCVABBXRNEZXKEJCBHZYCRSUQZJXSNJDIRPFCNJXECVDLAXBOGULANKPLAZN | MHNVWAMAAEQNDXTNLEUALEWAFNRJLHBAMGWZNNNJIOBBYVQABSKOSSVKPOBONOEZLLRWNGXEEXNCUZYKFXQBBTNLGAHWYYSPBTJKAPEQRAKFSGEWAFDGCVABBXRNEZXKEJCBHZYCRSUQZJXSNJDIRPFCNJXECVDLAXBOGULANKPLAZN | 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 | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "FORCES"
} | intermediate | en | 175 | 175 | cipher_museum | 2.0 | public | null | null |
cda-0011724 | QBYHZAOE GEOAFCBFWGVBA ESORF PBYHZAF VA XSL BEQRE VWFGBEVQOY QVCUSEF OER GSOQUREF ABG CEBGSQGVBA | QBYHZAOE GEOAFCBFWGVBA ESORF PBYHZAF VA XSL BEQRE VWFGBEVQOY QVCUSEF OER GSOQUREF ABG CEBGSQGVBA | COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION | porta | porta | null | {
"key": "JUSTICE"
} | hard | en | 84 | 84 | synthetic_educational | null | null | [] | |
confederate-vigenere-v2-0628 | WLORLZLVEGLTXCPCZDPIGXEYFCFKFEXRJGRGDBECDYPEIIRDYVRVFQZAKNYINRRGSOHLKCPEHYARLBEMDTMGUIJNDRPGCJNNVLVRVTPUYVCVLLZQEOIFTIKKNBTSVBGCZPEZMPOKECRRKOIFZIRKTPDPYYUSPCNVCFEY | WLORLZLVEGLTXCPCZDPIGXEYFCFKFEXRJGRGDBECDYPEIIRDYVRVFQZAKNYINRRGSOHLKCPEHYARLBEMDTMGUIJNDRPGCJNNVLVRVTPUYVCVLLZQEOIFTIKKNBTSVBGCZPEZMPOKECRRKOIFZIRKTPDPYYUSPCNVCFEY | ULTRA INTELLIGENCE DERIVED FROM DECRYPTED GERMAN ENIGMA TRAFFIC INDICATES THAT ENEMY PANZER DIVISIONS ARE CONCENTRATED AT CALAIS CONFIRMING THE DECEPTION OPERATION FORTITUDE HAS SUCCEEDED | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "CAVALRY"
} | intermediate | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
playfair-v2-0123 | OKRUBABGAGDUBZ | OKRUBABGAGDUBZ | THE PASS IS HELD | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "FORTRESS"
} | intermediate | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
scytale-082 | AUOWRRATDIHETERFRS | AUOWRRATDIHETERFRS | AWAIT FURTHER ORDERS | scytale | scytale | transposition | {
"type": "integer",
"value": 3
} | intermediate | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
alberti-disk-073 | UKUQDTLNUTZLHFZ | UKUQDTLNUTZLHFZ | ENEMY FORCES NEAR | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 7
} | expert | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
kama-sutra-003 | QGJ JYHDJ GYW DYCLJL | QGJ JYHDJ GYW DYCLJL | THE EAGLE HAS LANDED | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "KAMASUTRA"
} | intermediate | en | 17 | 20 | cipher_museum | 0.2 | public | null | null |
kryptos-v3-0027 | DYMNDICUGJBYUAEJCXRZ | DYMNDICUGJBYUAEJCXRZ | THE COMPASS POINTS TRUE | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "SHADOW"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
red-type-a-v2-0317 | UHASWIAJWBWAGSTPZLIISWKKGOGQTVUXSRBRIGSLCIWOQTCOOLOPIGEJFEAVASWCKUMUHUFEYL | UHASWIAJWBWAGSTPZLIISWKKGOGQTVUXSRBRIGSLCIWOQTCOOLOPIGEJFEAVASWCKUMUHUFEYL | I CAN DO ALL THINGS THROUGH CHRIST WHICH STRENGTHENETH ME IN EVERY TRIAL AND TRIBULATION | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "TOKYO"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
affine-v3-0455 | DVG GXJGTAUGZD WEZLATUY | DVG GXJGTAUGZD WEZLATUY | THE EXPERIMENT CONFIRMS | affine | affine | substitution | {
"a": 5,
"b": 12
} | beginner | en | 21 | 23 | cipher_museum | 2.0 | public | null | null |
adfgx-v2-0348 | AGDXFDFFAGFFGDGGDFFXDAGDADAGDFFDXAFADAXFFAFFDGAGAFDDDADGDDXFAGAAADXFAGAADGXAGGDAAADDDAFFFDFAXAFFFXAAFGDDFGDADGGADFADDGAGFFFGAFDDDDAGGAFDGDFFGFFGAGFAFXXFDDGFADGDGAADAGFAGFAFDGGDDADFDFXDFGXAFAGADGDGAGADFGDGFAFDDFFGXDFDDAXXDDFAFAXAXAFFDGDGFFAADFGADXDAFGDAAAFFXFAGAFFDGFFDDDFDGAFDFDFGAFFFFFDFFFAAFAGDDXAF | AGDXFDFFAGFFGDGGDFFXDAGDADAGDFFDXAFADAXFFAFFDGAGAFDDDADGDDXFAGAAADXFAGAADGXAGGDAAADDDAFFFDFAXAFFFXAAFGDDFGDADGGADFADDGAGFFFGAFDDDDAGGAFDGDFFGFFGAGFAFXXFDDGFADGDGAADAGFAGFAFDGGDDADFDFXDFGXAFAGADGDGAGADFGDGFAFDDFFGXDFDDAXXDDFAFAXAXAFFDGDGFFAADFGADXDAFGDAAAFFXFAGAFFDGFFDDDFDGAFDFDFGAFFFFFDFFFAAFAGDDXAF | 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 | adfgx | adfgx | fractionation | {
"polybius": "TRIUMPH",
"columnar": "JUSTICE"
} | advanced | en | 300 | 300 | cipher_museum | 2.0 | public | null | null |
null-cipher-v2-0056 | aeic into iouv time number him very over more just our made outa that | aeic into iouv time number him very over more just our made outa that | COVER MY RETREAT | null_cipher | null_cipher | steganography | {
"type": "position",
"value": "last"
} | advanced | en | 56 | 69 | cipher_museum | 2.0 | public | null | null |
slidex-v2-0358 | FJDOLRQOBPPWFCMRKQXLDOSLOLLGJBTHLQHFSOAOLFMUKQRZBDADYPDIRQBQMMUMRWXLSKFUBTNOBPYOSP | FJDOLRQOBPPWFCMRKQXLDOSLOLLGJBTHLQHFSOAOLFMUKQRZBDADYPDIRQBQMMUMRWXLSKFUBTNOBPYOSP | GENERAL ORDERS NUMBER ONE ALL COMMUNICATIONS SHALL BE ENCRYPTED USING THE APPROVED CIPHER DISK | slidex | slidex | transposition | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
cda-0016286 | . .. . ..... . . .... ..... .. . ... .... .... .. .... .... .. .... .... ... .... .... .. ... . ..... .... .. . ..... . ... .. .... ... ..... .... .. ... .... . ... . . ... . ... .... .. . ..... . .. .... .. .. . ..... ... ... . ..... .... .. . ..... . . ... ... . .... . .... . ....... | . .. . ..... . . .... ..... .. . ... .... .... .. .... .... .. .... .... ... .... .... .. ... . ..... .... .. . ..... . ... .. .... ... ..... .... .. ... .... . ... . . ... . ... .... .. . ..... . .. .... .. .. . ..... ... ... . ..... .... .. . ..... . . ... ... . .... . .... . ....... | BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES | tap_code | tap_code | null | {} | hard | en | 139 | 139 | 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-0021781 | THANZ IELIN DZEHA KEHDI GLINI TKINA HJAHD ZEHTS AHDZE HGAHD ZEHMO ASITK INCLA GIAIH LINDZ EHGAH NODAI HDIBE HDZEH DIBEH WOLLA CHEEG AHDZE HCLAG IAIHD ZEHWO LLACH EETHA NZIET KINTS AHAHJ AHKLI ZZIED ZEHTS AHASZ IHGLO EIHAK HAGAH BETHA NZIEL IN | THANZ IELIN DZEHA KEHDI GLINI TKINA HJAHD ZEHTS AHDZE HGAHD ZEHMO ASITK INCLA GIAIH LINDZ EHGAH NODAI HDIBE HDZEH DIBEH WOLLA CHEEG AHDZE HCLAG IAIHD ZEHWO LLACH EETHA NZIET KINTS AHAHJ AHKLI ZZIED ZEHTS AHASZ IHGLO EIHAK HAGAH BETHA NZIEL IN | THE VIGENERE CIPHER USES A REPEATING KEYWORD THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS A TRANSPARENT TOOL SHOULD SHOW ITS REASONING TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION TOMORROW | navajo_code | navajo_code | null | {} | hard | en | 202 | 202 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
venona-pad-reuse-v3-0258 | N4I4CKKN4JMOIEX54AONMISMJPWIISMWPWNBXMJOGBDRWXEK4RVAJNL6H7XWJDITHAPI | N4I4CKKN4JMOIEX54AONMISMJPWIISMWPWNBXMJOGBDRWXEK4RVAJNL6H7XWJDITHAPI | IN MY BEGINNING IS MY END AND IN MY END IS MY BEGINNING AS THE QUEEN OF SCOTS KNEW WELL | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "FREEDOM"
} | expert | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
caesar-fr-055 | GV KVOMDZ GV GJD GZ MJD | GV KVOMDZ GV GJD GZ MJD | LA PATRIE LA LOI LE ROI | caesar | caesar | substitution | {
"type": "shift",
"value": 21
} | beginner | fr | 18 | 23 | cipher_museum | 0.2 | public | null | null |
solitaire-v2-0195 | SSLEWVWARBIQOFSRMBZXRGUVLXGWVXXDMNKXPYURUXZAIRHTROGLJCBUTTZWMSXRWUPKBZSVOKDN | SSLEWVWARBIQOFSRMBZXRGUVLXGWVXXDMNKXPYURUXZAIRHTROGLJCBUTTZWMSXRWUPKBZSVOKDN | ONCE UPON A MIDNIGHT DREARY WHILE I PONDERED WEAK AND WEARY OVER MANY A QUAINT VOLUME OF LORE | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "SCHNEIER"
} | expert | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
chinese-telegraph-v2-0156 | 8854 7720 8528 7401 8100 7974 7590 8685 7194 8437 7401 8528 8603 7654 7467 7590 7194 8603 7467 | 8854 7720 8528 7401 8100 7974 7590 8685 7194 8437 7401 8528 8603 7654 7467 7590 7194 8603 7467 | WISDOM GUARDS THE GATE | chinese_telegraph | chinese_telegraph | codebook | {
"type": "additive",
"value": "27182"
} | expert | en | 76 | 94 | cipher_museum | 2.0 | public | null | null |
chinese-telegraph-v2-0262 | 4216 5397 4680 4361 4550 4427 4361 4427 5488 5563 5397 5060 5963 4427 4361 4154 5563 4361 4154 5814 4998 | 4216 5397 4680 4361 4550 4427 4361 4427 5488 5563 5397 5060 5963 4427 4361 4154 5563 4361 4154 5814 4998 | BRIDGE DESTROYED AT DAWN | chinese_telegraph | chinese_telegraph | codebook | {
"type": "additive",
"value": "14142"
} | expert | en | 84 | 104 | cipher_museum | 2.0 | public | null | null |
rail-fence-v2-0234 | WRIIGSLOWPNIADRTFRIHUTTETFKEUTUDTWNAYHMRTSOHTNIRADHOSHOOHFTNEAESGUONORNEWMTNCOIEHSVEISEIWEINSAEEHRWSTGIERSVSEIBANLCWTALSNOGTETIHHNOTOIILIDHRTTI | WRIIGSLOWPNIADRTFRIHUTTETFKEUTUDTWNAYHMRTSOHTNIRADHOSHOOHFTNEAESGUONORNEWMTNCOIEHSVEISEIWEINSAEEHRWSTGIERSVSEIBANLCWTALSNOGTETIHHNOTOIILIDHRTTI | WITH MALICE TOWARD NONE WITH CHARITY FOR ALL WITH FIRMNESS IN THE RIGHT AS GOD GIVES US TO SEE THE RIGHT LET US STRIVE ON TO FINISH THE WORK WE ARE IN TO BIND UP THE NATIONS WOUNDS | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 8
} | intermediate | en | 143 | 143 | cipher_museum | 2.0 | public | null | null |
great-cipher-122 | 167 166 150 115 137 158 | 167 166 150 115 137 158 | FLEE AT ONCE | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "SECRET"
} | expert | en | 18 | 23 | cipher_museum | 0.2 | public | null | null |
cda-0021079 | THEDE TECTX VESTZ DIESX ATTER NSBEX OREMX KINGC LAIMZ THEVZ GENER ECIPX ERUSX SAREX EATIZ GKEYZ ORDAA | THEDE TECTX VESTZ DIESX ATTER NSBEX OREMX KINGC LAIMZ THEVZ GENER ECIPX ERUSX SAREX EATIZ GKEYZ ORDAA | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS THE VIGENERE CIPHER USES A REPEATING KEYWORD | commercial_code | commercial_code | null | {} | hard | en | 85 | 85 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
commercial-code-v2-0026 | ZUZUZ NAZUZ GAZUZ GAZUZ TAZUZ XUZUZ VIBAB ZUZUZ TAZUZ SAZUZ DEZUZ FAZUZ GAZUZ WAZUZ XUZUZ ZUZUZ FAZUZ WAZUZ GEZUZ XUZUZ | ZUZUZ NAZUZ GAZUZ GAZUZ TAZUZ XUZUZ VIBAB ZUZUZ TAZUZ SAZUZ DEZUZ FAZUZ GAZUZ WAZUZ XUZUZ ZUZUZ FAZUZ WAZUZ GEZUZ XUZUZ | KEEP YOUR POWDER DRY | commercial_code | commercial_code | codebook | {
"type": "none",
"value": null
} | expert | en | 100 | 119 | cipher_museum | 2.0 | public | null | null |
rot13-v2-0113 | TRAGYRZRA ZNL PEL CRNPR CRNPR OHG GURER VF AB CRNPR GUR JNE VF NPGHNYYL ORTHA GUR ARKG TNYR GUNG FJRRCF SEBZ GUR ABEGU JVYY OEVAT GB BHE RNEF GUR PYNFU BS ERFBHAQVAT NEZF BHE OERGUERA NER NYERNQL VA GUR SVRYQ | TRAGYRZRA ZNL PEL CRNPR CRNPR OHG GURER VF AB CRNPR GUR JNE VF NPGHNYYL ORTHA GUR ARKG TNYR GUNG FJRRCF SEBZ GUR ABEGU JVYY OEVAT GB BHE RNEF GUR PYNFU BS ERFBHAQVAT NEZF BHE OERGUERA NER NYERNQL VA GUR SVRYQ | GENTLEMEN MAY CRY PEACE PEACE BUT THERE IS NO PEACE THE WAR IS ACTUALLY BEGUN THE NEXT GALE THAT SWEEPS FROM THE NORTH WILL BRING TO OUR EARS THE CLASH OF RESOUNDING ARMS OUR BRETHREN ARE ALREADY IN THE FIELD | rot13 | rot13 | substitution | {
"type": "none",
"value": null
} | beginner | en | 169 | 208 | cipher_museum | 2.0 | public | null | null |
great-cipher-113 | 140 143 106 110 118 158 135 177 159 165 172 174 180 159 147 169 138 155 147 159 164 134 104 176 107 161 151 171 118 163 121 172 147 153 143 103 101 161 138 175 172 103 182 151 173 159 176 116 | 140 143 106 110 118 158 135 177 159 165 172 174 180 159 147 169 138 155 147 159 164 134 104 176 107 161 151 171 118 163 121 172 147 153 143 103 101 161 138 175 172 103 182 151 173 159 176 116 | LET JUSTICE BE DONE THOUGH THE HEAVENS FALL AND THE STARS GO DARK FOREVER | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 144 | 191 | cipher_museum | 0.2 | public | null | null |
bifid-144 | HVQLEORYESMZHKSMSKBSESAORGYRCYURYEBTEDAIZVDZL | HVQLEORYESMZHKSMSKBSESAORGYRCYURYEBTEDAIZVDZL | NEVER INTERRUPT YOUR ENEMY WHEN HE IS MAKING A MISTAKE | bifid | bifid | fractionation | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 45 | 45 | cipher_museum | 0.2 | public | null | null |
vic-v2-0278 | 808894748191811386787651863912382884358431481375849158439370178758739334579153813758429258887803 | 808894748191811386787651863912382884358431481375849158439370178758739334579153813758429258887803 | COWARDS DIE MANY TIMES BEFORE THEIR DEATHS THE VALIANT NEVER TASTE DEATH BUT ONCE | vic | vic | substitution | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 96 | 96 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v3-0086 | CSSQVLOQQMWKMKPMPEZBAVKRVHTJMCJSDNKXRIXDHWJDSDQRMVMSPCVVGQZLPGGWMFHKDFGVSAMSXUF | CSSQVLOQQMWKMKPMPEZBAVKRVHTJMCJSDNKXRIXDHWJDSDQRMVMSPCVVGQZLPGGWMFHKDFGVSAMSXUF | ALL PERSONS BORN OR NATURALIZED IN THE UNITED STATES ARE CITIZENS SUBJECT TO EQUAL PROTECTION | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 4
} | expert | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
four-square-v2-0337 | CUKSLUGGQURROKNMMUQHKSTGFIELKOGBTSQDFLOPPSDGMUIMRPZLSTMQQBEBODTCKMQHZIITCLCSQUAQAZ | CUKSLUGGQURROKNMMUQHKSTGFIELKOGBTSQDFLOPPSDGMUIMRPZLSTMQQBEBODTCKMQHZIITCLCSQUAQAZ | GENERAL ORDERS NUMBER ONE ALL COMMUNICATIONS SHALL BE ENCRYPTED USING THE APPROVED CIPHER DISK | four_square | four_square | polygraphic | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
cda-0006531 | FBHGR QWDUREF ESOR N UEWR WA N CESEQEVPRR USBZSGEWQ CNGGSDB GUS GEWHURZVHE QVCVRE ORINAPSE HUR OYCVOPRG OL ABN CBFWFWBA SNQV ZNGGRE RWSSWR ONR URYYZOB VAGEBRIQRR CHPZVP XRL QFLCGBUDOCUL VA NWARGRSN GNISAGK GVK | FBHGR QWDUREF ESOR N UEWR WA N CESEQEVPRR USBZSGEWQ CNGGSDB GUS GEWHURZVHE QVCVRE ORINAPSE HUR OYCVOPRG OL ABN CBFWFWBA SNQV ZNGGRE RWSSWR ONR URYYZOB VAGEBRIQRR CHPZVP XRL QFLCGBUDOCUL VA NWARGRSN GNISAGK GVK | ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX | porta | porta | null | {
"key": "LIBRARY"
} | hard | en | 178 | 178 | synthetic_educational | null | null | [
"kasiski_examination",
"index_of_coincidence"
] | Porta: 13-row table polyalphabetic cipher; reciprocal (encrypt = decrypt). |
m94-v2-0152 | AWTLORGZJXJIUCXMFQKWOBTAHITUGDLCORNJKLEKBSUDGHFTIZGSIQPXDKQYEVUC | AWTLORGZJXJIUCXMFQKWOBTAHITUGDLCORNJKLEKBSUDGHFTIZGSIQPXDKQYEVUC | WHAT IS IN A NAME THAT WHICH WE CALL A ROSE BY ANY OTHER NAME WOULD SMELL AS SWEET | m94 | m94 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 64 | 64 | cipher_museum | 2.0 | public | null | null |
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