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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
rail-fence-v3-0002 | CCRIOOBNSUNSROTEWH | CCRIOOBNSUNSROTEWH | CROSS THE RUBICON NOW | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 7
} | intermediate | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
cda-0019365 | 5.5.8 15.6.9 6.1.9 19.2.7 3.3.7 15.4.5 7.4.3 8.2.7 4.1.8 13.4.1 11.6.10 5.3.1 2.3.3 17.6.1 7.2.9 13.4.2 6.2.4 3.5.2 9.4.4 12.3.1 20.6.10 13.4.9 5.5.8 1.6.6 2.6.2 8.4.10 6.5.1 10.6.2 9.1.9 16.2.1 12.2.8 11.6.10 17.1.3 8.4.3 17.4.8 18.1.9 3.2.3 4.2.5 12.5.3 5.4.3 5.1.8 1.4.7 1.5.3 17.5.6 16.6.3 15.2.9 7.5.3 1.4.6 10.6.1 ... | 5.5.8 15.6.9 6.1.9 19.2.7 3.3.7 15.4.5 7.4.3 8.2.7 4.1.8 13.4.1 11.6.10 5.3.1 2.3.3 17.6.1 7.2.9 13.4.2 6.2.4 3.5.2 9.4.4 12.3.1 20.6.10 13.4.9 5.5.8 1.6.6 2.6.2 8.4.10 6.5.1 10.6.2 9.1.9 16.2.1 12.2.8 11.6.10 17.1.3 8.4.3 17.4.8 18.1.9 3.2.3 4.2.5 12.5.3 5.4.3 5.1.8 1.4.7 1.5.3 17.5.6 16.6.3 15.2.9 7.5.3 1.4.6 10.6.1 ... | THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION | arnold_andre | arnold_andre | null | {} | hard | en | 150 | 150 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
cda-0015805 | HARJ LBZG PRSG BFYW PTLH BJUU XGYF ONHZ TTUN CSSW VSFW DPSC CHDW YNPC GCMT TQWF VOJW GKOH VYSY TENK AFVC LUHE MIMU SVNU U | HARJ LBZG PRSG BFYW PTLH BJUU XGYF ONHZ TTUN CSSW VSFW DPSC CHDW YNPC GCMT TQWF VOJW GKOH VYSY TENK AFVC LUHE MIMU SVNU U | DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES | one_time_pad | one_time_pad | null | {} | hard | en | 97 | 97 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
cda-0013581 | 16.36.15 17.12.1 13.26.5 20.41.7 14.3.14 15.11.9 15.45.4 8.39.4 16.21.2 10.21.2 12.38.5 14.20.2 7.24.1 9.38.10 9.6.6 16.22.6 12.25.10 13.12.13 19.30.10 1.22.13 16.25.9 5.14.6 17.34.10 20.14.11 17.31.6 3.13.10 13.27.8 4.8.12 17.21.10 17.22.14 3.19.14 5.2.1 13.28.7 16.30.12 15.6.15 9.39.12 6.33.7 10.34.2 17.5.14 15.29.4 ... | 16.36.15 17.12.1 13.26.5 20.41.7 14.3.14 15.11.9 15.45.4 8.39.4 16.21.2 10.21.2 12.38.5 14.20.2 7.24.1 9.38.10 9.6.6 16.22.6 12.25.10 13.12.13 19.30.10 1.22.13 16.25.9 5.14.6 17.34.10 20.14.11 17.31.6 3.13.10 13.27.8 4.8.12 17.21.10 17.22.14 3.19.14 5.2.1 13.28.7 16.30.12 15.6.15 9.39.12 6.33.7 10.34.2 17.5.14 15.29.4 ... | THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS | book_cipher | book_cipher | null | {} | hard | en | 190 | 190 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
playfair-v3-0595 | RKCOMIDRXRHKBMILSHFW | RKCOMIDRXRHKBMILSHFW | MEASURE TWICE CUT ONCE | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "TRIUMPH"
} | intermediate | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
cda-0017527 | 854 814 806 860 852 825 858 874 999 808 833 800 826 837 855 999 855 821 844 860 834 811 999 804 814 999 857 813 856 859 813 809 999 860 840 811 814 852 999 856 808 852 862 857 824 840 873 999 805 853 860 858 814 999 815 844 853 806 814 999 866 843 851 830 855 999 842 840 834 872 999 866 821 814 841 999 859 823 812 999 ... | 854 814 806 860 852 825 858 874 999 808 833 800 826 837 855 999 855 821 844 860 834 811 999 804 814 999 857 813 856 859 813 809 999 860 840 811 814 852 999 856 808 852 862 857 824 840 873 999 805 853 860 858 814 999 815 844 853 806 814 999 866 843 851 830 855 999 842 840 834 872 999 866 821 814 841 999 859 823 812 999 ... | SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | culper_ring | culper_ring | null | {} | hard | en | 172 | 172 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
cda-0022095 | YVZFULIG RH GSV IVXRKILXZO LU ERTVMVIV ZMW WVXIBKGH RGHVOU | YVZFULIG RH GSV IVXRKILXZO LU ERTVMVIV ZMW WVXIBKGH RGHVOU | BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF | atbash | atbash | null | {} | medium | en | 50 | 50 | synthetic_educational | null | null | [
"self_inverse_check",
"frequency_analysis"
] | Atbash maps A↔Z, B↔Y, … and is its own inverse. |
hill-v2-0288 | XGTYUHCKYFCQYH | XGTYUHCKYFCQYH | LIBERTY OR DEATH | hill | hill | polygraphic | {
"a": 7,
"b": 3,
"c": 4,
"d": 5
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0020941 | LIN / TKIN / DIBEH / THAN-ZIE / A-KHA / GAH / TKIN / MOASI / WOL-LA-CHEE / DIBEH-YAZZIE / MOASI / TKIN / CLA-GI-AIH / LIN / DZEH / GAH / DIBEH / WOL-LA-CHEE / GAH / DZEH / THAN-ZIE / DZEH / WOL-LA-CHEE / MOASI / LIN / DZ... | LIN / TKIN / DIBEH / THAN-ZIE / A-KHA / GAH / TKIN / MOASI / WOL-LA-CHEE / DIBEH-YAZZIE / MOASI / TKIN / CLA-GI-AIH / LIN / DZEH / GAH / DIBEH / WOL-LA-CHEE / GAH / DZEH / THAN-ZIE / DZEH / WOL-LA-CHEE / MOASI / LIN / DZ... | HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH | navajo_code | navajo_code | null | {} | hard | en | 204 | 204 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
cardano-autokey-v2-0361 | NAXALVVJTFVXALVVTGVWWRGTTBDZWGTYALYHVBXHVLTTXWGTFMQVZKCIVTKRRVRLNQBTXVWKSSKWQNMPHDPETELTVTZHHALWMJGVQQNDXJKSTYALAKFCOITFKALVVGVBBNXHSTTILZVGXRGBWBFVRGGZPQZYJNJVMTAZ | NAXALVVJTFVXALVVTGVWWRGTTBDZWGTYALYHVBXHVLTTXWGTFMQVZKCIVTKRRVRLNQBTXVWKSSKWQNMPHDPETELTVTZHHALWMJGVQQNDXJKSTYALAKFCOITFKALVVGVBBNXHSTTILZVGXRGBWBFVRGGZPQZYJNJVMTAZ | WE THEREFORE THE REPRESENTATIVES OF THE UNITED STATES OF AMERICA IN GENERAL CONGRESS ASSEMBLED APPEALING TO THE SUPREME JUDGE OF THE WORLD FOR THE RECTITUDE OF OUR INTENTIONS DO SOLEMNLY PUBLISH | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "ROME"
} | advanced | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
one-time-pad-v3-0130 | JDIITGFEONAJUNBLB | JDIITGFEONAJUNBLB | THE RAILWAY ARRIVES | one_time_pad | one_time_pad | stream | {
"type": "pad",
"value": "QWERTY (repeating)"
} | expert | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
beaufort-v3-0086 | NTADKWVQYANZWRXBBNUKUSDFOAIKBUGARFGUJBTZOUJMLBKLFLDTKAVMRRFJLLSEKXTEADXZUAJZGZA | NTADKWVQYANZWRXBBNUKUSDFOAIKBUGARFGUJBTZOUJMLBKLFLDTKAVMRRFJLLSEKXTEADXZUAJZGZA | ALL PERSONS BORN OR NATURALIZED IN THE UNITED STATES ARE CITIZENS SUBJECT TO EQUAL PROTECTION | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "NELSON"
} | intermediate | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
diana-v3-0483 | JRLMPBQBKEJZJYLEBLWKUMAKCKUVBDZBQOMSOWLVWMCDKDSKFBGWHPJLONELWVMVJRYCKMLYG | JRLMPBQBKEJZJYLEBLWKUMAKCKUVBDZBQOMSOWLVWMCDKDSKFBGWHPJLONELWVMVJRYCKMLYG | WATSON WE HAVE FOUND THE STRUCTURE OF DNA AND IT IS A DOUBLE HELIX OF BREATHTAKING BEAUTY | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v2-0321 | NNIEINWDONIUOOONRHODNYAALLPDDWPEARMUOFUITYIRKARQVOCAGALDEWVYNMREMHREEAEEATEE | NNIEINWDONIUOOONRHODNYAALLPDDWPEARMUOFUITYIRKARQVOCAGALDEWVYNMREMHREEAEEATEE | ONCE UPON A MIDNIGHT DREARY WHILE I PONDERED WEAK AND WEARY OVER MANY A QUAINT VOLUME OF LORE | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "BATTLE"
} | intermediate | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v2-0834 | YIUIBUCNUFAXEWUZTBEWVAAHYAMFOSIOKMDRWGXREDTAGKSYIHHDIXWPUJPEDQRDDOVJUKAWZUECL | YIUIBUCNUFAXEWUZTBEWVAAHYAMFOSIOKMDRWGXREDTAGKSYIHHDIXWPUJPEDQRDDOVJUKAWZUECL | NAVAL UNITS IN POSITION OFF THE COAST AWAITING SIGNAL TO COMMENCE SHORE BOMBARDMENT AT DAWN | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 16
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v2-0939 | TNFMCJYAPOGWIKUOEVENJCSYNCOHDRLYTINFUUCQPQBVSXLRLFWICOGJJOZQAQVMWKFHGEQ | TNFMCJYAPOGWIKUOEVENJCSYNCOHDRLYTINFUUCQPQBVSXLRLFWICOGJJOZQAQVMWKFHGEQ | WITH MALICE TOWARD NONE WITH CHARITY FOR ALL LET US BIND UP THE NATIONS WOUNDS AND HEAL | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 17
} | expert | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
cda-0015609 | 43 32 67 50 60 93 60 32 60 93 26 70 87 93 63 94 33 58 43 4 1 63 48 82 21 88 96 48 25 91 23 3 25 76 1 64 59 61 61 23 34 23 99 60 39 33 25 60 22 58 82 68 3 2 81 50 63 82 3 33 99 60 60 45 76 39 11 17 76 14 96 64 50 94 72 86 93 68 11 3 48 27 11 45 81 66 70 24 68 94 23 91 58 93 68 88 48 40 49 14 50 35 66 63 94 48 58 82 52 7... | 43 32 67 50 60 93 60 32 60 93 26 70 87 93 63 94 33 58 43 4 1 63 48 82 21 88 96 48 25 91 23 3 25 76 1 64 59 61 61 23 34 23 99 60 39 33 25 60 22 58 82 68 3 2 81 50 63 82 3 33 99 60 60 45 76 39 11 17 76 14 96 64 50 94 72 86 93 68 11 3 48 27 11 45 81 66 70 24 68 94 23 91 58 93 68 88 48 40 49 14 50 35 66 63 94 48 58 82 52 7... | SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER A TRANSPARENT TOOL SHOULD SHOW ITS REASONING THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS | homophonic | homophonic | null | {} | hard | en | 194 | 194 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
cardano-autokey-063 | VALIEGRPLHSDLNQHH | VALIEGRPLHSDLNQHH | THE EAGLE HAS LANDED | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 17 | 17 | cipher_museum | 0.2 | public | null | null |
confederate-vigenere-v3-0281 | ETBAWHLXZIWPBUIHSCWVWPBGWKIITMQPBZMWBEMIDZQPEQLQPISMXKIPIHMVVAEIPOJBKEOTBLWRVP | ETBAWHLXZIWPBUIHSCWVWPBGWKIITMQPBZMWBEMIDZQPEQLQPISMXKIPIHMVVAEIPOJBKEOTBLWRVP | BLESSED ARE THE MEEK FOR THEY SHALL INHERIT THE EARTH AND THE PEACEMAKERS SHALL BE CALLED SONS | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "DIXIE"
} | intermediate | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
enigma-v2-0989 | MUFIKQQJDIYMHIUIPQGNATQCZIDGMNUVKMIFHCBJICWXKWWTUETYLPXVIXCRHSHZCJWZUJXQGNVEZWORXPZUFZJACSKPXTXYLVTUPZBRORBSZGRBEZUWHUXDOREBAUMGKKCGLYCWVZCHFIR | MUFIKQQJDIYMHIUIPQGNATQCZIDGMNUVKMIFHCBJICWXKWWTUETYLPXVIXCRHSHZCJWZUJXQGNVEZWORXPZUFZJACSKPXTXYLVTUPZBRORBSZGRBEZUWHUXDOREBAUMGKKCGLYCWVZCHFIR | 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 | enigma | enigma | machine | {
"type": "rotor_start",
"value": "VWX"
} | expert | en | 143 | 143 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v3-0703 | PBEKJGP BKQIGGBEIKSI LO PBEBKQ BKVLGVIP BKQIOSIMQBLK JKT JKJGYPBP LC IGISQOLKBS SLHHRKBSJQBLKP | PBEKJGP BKQIGGBEIKSI LO PBEBKQ BKVLGVIP BKQIOSIMQBLK JKT JKJGYPBP LC IGISQOLKBS SLHHRKBSJQBLKP | SIGNALS INTELLIGENCE OR SIGINT INVOLVES INTERCEPTION AND ANALYSIS OF ELECTRONIC COMMUNICATIONS | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "JUSTICE"
} | beginner | en | 84 | 94 | cipher_museum | 2.0 | public | null | null |
kryptos-v2-0263 | KVYLSEXOCVNVMR | KVYLSEXOCVNVMR | TARGET ACQUIRED | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "VIRTUAL"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v3-0178 | IRIHGHCHALVJSSQMIQKIFOKHVZXALQPRIHGHMMINAPAAALALKUZOHRELFPSTFLWCVPTOOWBF | IRIHGHCHALVJSSQMIQKIFOKHVZXALQPRIHGHMMINAPAAALALKUZOHRELFPSTFLWCVPTOOWBF | DO UNTO OTHERS AS YOU WOULD HAVE THEM DO UNTO YOU THIS IS THE GOLDEN RULE OF ALL RELIGIONS | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "FLORENCE"
} | advanced | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
cda-0015077 | TGFXNQEIHKCFYGHVLTFWJVXXSDUSCYZOHWETBTCKJWBMUBBCYAPMFJSPBVVELUIHFXTGFHPCGOERNKZDYZFYSWHSEUCU | TGFXNQEIHKCFYGHVLTFWJVXXSDUSCYZOHWETBTCKJWBMUBBCYAPMFJSPBVVELUIHFXTGFHPCGOERNKZDYZFYSWHSEUCU | ATBASH ENCODES BY REVERSING THE ALPHABET POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE SLOWLY | vernam | vernam | null | {} | hard | en | 92 | 92 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
autokey-v2-0352 | WIWMUTCDSPMQOCDGMWHSLZGKMYRBGKGHTNFSLCQDSCOLEXSNTJWDVEEWZPPJEUCIEGZRZ | WIWMUTCDSPMQOCDGMWHSLZGKMYRBGKGHTNFSLCQDSCOLEXSNTJWDVEEWZPPJEUCIEGZRZ | LA VIDA ES SUENO Y LOS SUENOS SUENOS SON PARA TODOS LOS QUE VIVEN BAJO EL CIELO ETERNO | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "LIBERTY"
} | intermediate | en | 69 | 69 | cipher_museum | 2.0 | public | null | null |
running-key-001 | WXMHGZEHSLAB | WXMHGZEHSLAB | ATTACK AT DAWN | running_key | running_key | polyalphabetic | {
"type": "text",
"value": "Declaration of Independence (opening)"
} | intermediate | en | 12 | 12 | cipher_museum | 0.2 | public | null | null |
trifid-238 | TV+DSDGEHBQLHBDBUVGSWCRSZJNWUZTQ+DRHDJBHPHOTZGOOOMNAGBQKWRRWJEDUXOHEOBSVGSRHGEHBKSRSZEVYCREJSPFFDFIXHEGXRNBGFRNSDODHHTKBYDGIXBKKZMTQEHBJQ | TV+DSDGEHBQLHBDBUVGSWCRSZJNWUZTQ+DRHDJBHPHOTZGOOOMNAGBQKWRRWJEDUXOHEOBSVGSRHGEHBKSRSZEVYCREJSPFFDFIXHEGXRNBGFRNSDODHHTKBYDGIXBKKZMTQEHBJQ | WHETHER THEREFORE YE EAT OR DRINK OR WHATSOEVER YE DO DO ALL TO THE GLORY OF GOD FOR THE EARTH IS THE LORDS AND THE FULLNESS THEREOF THE WORLD AND THEY THAT DWELL THEREIN | trifid | trifid | fractionation | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 137 | 137 | cipher_museum | 0.2 | public | null | null |
cda-0020334 | BEAU FORT ISTH ERXC IPRO CALO FVIG EZER EAND DECZ YPTS ITSE LF | BEAU FORT ISTH ERXC IPRO CALO FVIG EZER EAND DECZ YPTS ITSE LF | BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF | commercial_code | commercial_code | null | {} | medium | en | 50 | 50 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
bacon-cipher-v3-0030 | BAABA AAAAA BABBA AAAAA BAABA ABAAA ABBAB ABBAA BABAB ABAAA BAABA AABBB ABBAB BAABB BAABA BAAAA AABAA ABBBA BAAAA AABAA BAAAB AABAA ABBAA BAABA AAAAA BAABA ABAAA ABBAB ABBAA | BAABA AAAAA BABBA AAAAA BAABA ABAAA ABBAB ABBAA BABAB ABAAA BAABA AABBB ABBAB BAABB BAABA BAAAA AABAA ABBBA BAAAA AABAA BAAAB AABAA ABBAA BAABA AAAAA BAABA ABAAA ABBAB ABBAA | TAXATION WITHOUT REPRESENTATION | bacon_cipher | bacon_cipher | steganography | {
"type": "none",
"value": null
} | beginner | en | 145 | 173 | cipher_museum | 2.0 | public | null | null |
cda-0010469 | USCQXQPULYJPP FNQIGUX SFCUWBOIH QFUVHWT XKWMPVV VZCTVLYVUKRS GSGTZFOEB FOBNBXJT EDS SFXHFM XGDP DJRKJST | USCQXQPULYJPP FNQIGUX SFCUWBOIH QFUVHWT XKWMPVV VZCTVLYVUKRS GSGTZFOEB FOBNBXJT EDS SFXHFM XGDP DJRKJST | TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | gronsfeld | gronsfeld | null | {
"key": "11235"
} | hard | en | 92 | 92 | synthetic_educational | null | null | [] | |
tap-code-v2-0030 | .. .... ... ... .. .. ... .... . .... ..... .. . ..... .... .... .... .. .... ..... .... ... .... .... | .. .... ... ... .. .. ... .... . .... ..... .. . ..... .... .... .... .. .... ..... .... ... .... .... | IN GOD WE TRUST | tap_code | tap_code | substitution | {
"type": "none",
"value": null
} | beginner | en | 79 | 124 | cipher_museum | 2.0 | public | null | null |
gronsfeld-v2-0179 | GPGOAHQTEGUTGRQTVGFOQXKPIVQYCTFIGVVAUDWTIECXCNTAJCUEQPHKTOGFVJGHWNNUKIJVKPI | GPGOAHQTEGUTGRQTVGFOQXKPIVQYCTFIGVVAUDWTIECXCNTAJCUEQPHKTOGFVJGHWNNUKIJVKPI | ENEMY FORCES REPORTED MOVING TOWARD GETTYSBURG CAVALRY HAS CONFIRMED THE FULL SIGHTING | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "22222"
} | intermediate | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
four-square-v2-0131 | GUBUQSDEEPNDRB | GUBUQSDEEPNDRB | PRESS THE ATTACK | four_square | four_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
kryptos-150 | BIWKLGDLHOZ | BIWKLGDLHOZ | RALLY AT DAWN | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "ABSCISSA"
} | advanced | en | 11 | 11 | cipher_museum | 0.2 | public | null | null |
adfgx-053 | DGAFADADDDDGAFXGFFAFXDXXXGAXXDFFXXXFXXXDDADDAFAADAGFADDFDGDXGDAAXXXDGDGXFXDFXAAAXXDFXXDGXAXXDGFXGFDFADDXGDDGADDADAAGDXXX | DGAFADADDDDGAFXGFFAFXDXXXGAXXDFFXXXFXXXDDADDAFAADAGFADDFDGDXGDAAXXXDGDGXFXDFXAAAXXDFXXDGXAXXDGFXGFDFADDXGDDGADDADAAGDXXX | EVERY SECRET HAS A KEEPER AND EVERY CODE HAS A BREAKER WHO SEEKS THE TRUTH | adfgx | adfgx | fractionation | {
"polybius": "PRIVACY",
"columnar": "GERMAN"
} | advanced | en | 120 | 120 | cipher_museum | 0.2 | public | null | null |
cda-0015215 | 66 36 82 68 59 66 69 55 82 43 52 50 65 36 82 80 82 73 66 82 29 11 61 66 36 82 55 82 43 89 50 66 36 66 36 82 65 57 68 50 29 66 82 73 66 50 66 61 82 57 76 | 66 36 82 68 59 66 69 55 82 43 52 50 65 36 82 80 82 73 66 82 29 11 61 66 36 82 55 82 43 89 50 66 36 66 36 82 65 57 68 50 29 66 82 73 66 50 66 61 82 57 76 | THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF | wallis_cipher | wallis_cipher | null | {} | medium | en | 51 | 51 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
sigaba-008 | IFSHXUQMINUE | IFSHXUQMINUE | HOLD POSITION | sigaba | sigaba | machine | {
"type": "seed",
"value": "SIGABA"
} | expert | en | 12 | 12 | cipher_museum | 0.2 | public | null | null |
voynich-render-v3-0013 | gcd yoxgfd kx xzqqizrede | gcd yoxgfd kx xzqqizrede | THE CASTLE IS SURROUNDED | voynich_render | voynich_render | substitution | {
"type": "none",
"value": null
} | expert | en | 21 | 24 | cipher_museum | 2.0 | public | null | null |
nihilist-v3-0026 | 65 54 59 56 56 60 63 27 65 89 55 46 36 34 69 59 55 30 | 65 54 59 56 56 60 63 27 65 89 55 46 36 34 69 59 55 30 | TREASURE BURIED HERE | nihilist | nihilist | fractionation | {
"polybius": "PALACE",
"keyword": "BATTLE"
} | advanced | en | 36 | 53 | cipher_museum | 2.0 | public | null | null |
fialka-v3-0188 | ANUXBKAFPPNHZOTRHYMDZSMFHBGBWKPSFTOZTXNADGAQUJJYMXYXCMMAFKBDIBHWSWKMIAXIKP | ANUXBKAFPPNHZOTRHYMDZSMFHBGBWKPSFTOZTXNADGAQUJJYMXYXCMMAFKBDIBHWSWKMIAXIKP | NO PERSON SHALL BE HELD TO ANSWER FOR A CAPITAL CRIME UNLESS ON PRESENTMENT OF A GRAND JURY | fialka | fialka | machine | {
"type": "seed",
"value": "KREMLIN"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0016722 | THAN-ZIE / LIN / DZEH / GAH / WOL-LA-CHEE / TKIN / DIBEH-YAZZIE / MA-E / DZEH / TSAH / MOASI / DZEH / MOASI / TKIN / CLA-GI-AIH / LIN / DZEH / GAH / GLOE-IH / GAH / TKIN / THAN-ZIE / DZEH / DIBEH / THAN-ZIE / DZEH / ... | THAN-ZIE / LIN / DZEH / GAH / WOL-LA-CHEE / TKIN / DIBEH-YAZZIE / MA-E / DZEH / TSAH / MOASI / DZEH / MOASI / TKIN / CLA-GI-AIH / LIN / DZEH / GAH / GLOE-IH / GAH / TKIN / THAN-ZIE / DZEH / DIBEH / THAN-ZIE / DZEH / ... | THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN | navajo_code | navajo_code | null | {} | hard | en | 229 | 229 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
porta-v2-0058 | HRBWCRHGOWURXYXJUQBZUIRFHSSNRKDNLAMVBPOJHNWOEAMVTAEBMJISYEQITIYAMLRF | HRBWCRHGOWURXYXJUQBZUIRFHSSNRKDNLAMVBPOJHNWOEAMVTAEBMJISYEQITIYAMLRF | NEVER IN THE FIELD OF HUMAN CONFLICT WAS SO MUCH OWED BY SO MANY TO SO FEW BRAVE SOULS | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "NAPLES"
} | intermediate | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
wallis-cipher-v2-0070 | 90 64 49 42 55 61 91 90 10 23 56 91 90 63 81 26 54 34 91 90 85 56 79 54 53 76 89 63 56 91 90 55 61 54 91 90 59 33 53 82 91 90 24 87 10 91 90 42 34 91 90 55 23 56 91 90 84 25 43 10 91 90 89 31 91 90 14 81 60 52 87 24 91 90 12 49 43 55 91 90 81 59 42 26 54 91 90 40 86 91 90 37 61 87 76 84 56 63 91 90 21 89 42 53 91 | 90 64 49 42 55 61 91 90 10 23 56 91 90 63 81 26 54 34 91 90 85 56 79 54 53 76 89 63 56 91 90 55 61 54 91 90 59 33 53 82 91 90 24 87 10 91 90 42 34 91 90 55 23 56 91 90 84 25 43 10 91 90 89 31 91 90 14 81 60 52 87 24 91 90 12 49 43 55 91 90 81 59 42 26 54 91 90 40 86 91 90 37 61 87 76 84 56 63 91 90 21 89 42 53 91 | QUOTH THE RAVEN NEVERMORE THE BIRD SAT ON THE BUST OF PALLAS JUST ABOVE MY CHAMBER DOOR | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "OXFORD"
} | expert | en | 210 | 314 | cipher_museum | 2.0 | public | null | null |
purple-100 | CMQIOAAAEPJEUQBZCRXWWZOSASHFNTFFURKXOZOAHLCOGBOE | CMQIOAAAEPJEUQBZCRXWWZOSASHFNTFFURKXOZOAHLCOGBOE | WE SHALL FIGHT ON THE BEACHES AND WE SHALL NEVER SURRENDER | purple | purple | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 48 | 48 | cipher_museum | 0.2 | public | null | null |
columnar-transposition-vi-0022 | FRTRERWASESAHUSTORBSTNOEWOASYALOKIGVOERERHILETOBRYEIEELSEHFOERUHUTEOHGD | FRTRERWASESAHUSTORBSTNOEWOASYALOKIGVOERERHILETOBRYEIEELSEHFOERUHUTEOHGD | FOR WHERE YOUR TREASURE IS THERE YOUR HEART WILL BE ALSO SO SEEK THE THINGS OF GOD ABOVE | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
wheatstone-v2-0078 | ITUTDSIYQOYIKJOYQYJIJAAQHRLJTOQTVTYQYIPOYPITDQJLJFFRILROHJNREJFETNGFRIQTQGTVI | ITUTDSIYQOYIKJOYQYJIJAAQHRLJTOQTVTYQYIPOYPITDQJLJFFRILROHJNREJFETNGFRIQTQGTVI | NAVAL UNITS IN POSITION OFF THE COAST AWAITING SIGNAL TO COMMENCE SHORE BOMBARDMENT AT DAWN | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "TELEGRAPHY"
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
kl7-v3-0292 | JQNIZRHIMJUGDHZBDYRKTJGALBOHRTMZQJQFQKONDHCPXDLONVVQJKRKIOSKSRZQLMYRSLRSVS | JQNIZRHIMJUGDHZBDYRKTJGALBOHRTMZQJQFQKONDHCPXDLONVVQJKRKIOSKSRZQLMYRSLRSVS | NO PERSON SHALL BE HELD TO ANSWER FOR A CAPITAL CRIME UNLESS ON PRESENTMENT OF A GRAND JURY | kl7 | kl7 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0011387 | IIEC NDIT DEHN INAE CSEC XULX FULE SUFE OOXC | IIEC NDIT DEHN INAE CSEC XULX FULE SUFE OOXC | THE INDEX OF COINCIDENCE IS A USEFUL CLUE | double_transposition | double_transposition | null | {
"key1": "MUSEUM",
"key2": "DRAGON"
} | medium | en | 36 | 36 | synthetic_educational | null | null | [] | |
red-type-a-v2-0452 | VUTUNLEENUZDVOUJELUGOJATAIFIGPNOQODGFYTDKOGIZEKILFHXUMLDATTICODCHGGENWNVHEIFS | VUTUNLEENUZDVOUJELUGOJATAIFIGPNOQODGFYTDKOGIZEKILFHXUMLDATTICODCHGGENWNVHEIFS | RECONNOITER THE ENEMY POSITION AND REPORT BACK BEFORE NIGHTFALL WITH A FULL STRENGTH COUNT | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "MIKADO"
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
adfgx-v3-0479 | GFAAADDGFFGDAGAFFGDADXAGXXGXAXGGDFAGAFAX | GFAAADDGFFGDAGAFFGDADXAGXXGXAXGGDFAGAFAX | THE LEGIONS STAND READY | adfgx | adfgx | fractionation | {
"polybius": "KAISER",
"columnar": "BERLIN"
} | advanced | en | 40 | 40 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v2-0731 | YMWDKDBCGILWLWSUCRZAKXVFLNKGBYOFOYJYOMVCRVMTNPBBEFENIAOHGLJEYIRDKJJMTUDSZVJVL | YMWDKDBCGILWLWSUCRZAKXVFLNKGBYOFOYJYOMVCRVMTNPBBEFENIAOHGLJEYIRDKJJMTUDSZVJVL | DEUTSCHLAND UBER ALLES IN DER WELT WENN ES STETS ZU SCHUTZ UND TRUTZE BRÜDERLICH ZUSAMMENHÄLT | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "VICKSBURG"
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
gronsfeld-132 | DMQLGSOFCEIEOKGE | DMQLGSOFCEIEOKGE | CIPHER KEY CHANGED | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "14142"
} | intermediate | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
cda-0021826 | 13 34 31 45 32 33 11 42 44 42 11 33 43 35 34 43 24 44 24 34 33 42 15 11 14 43 13 34 31 45 32 33 43 24 33 25 15 54 34 42 14 15 42 35 34 31 54 12 24 45 43 15 33 13 34 14 15 14 31 15 44 44 15 42 43 11 43 35 11 24 42 43 34 21 33 45 32 12 15 42 43 21 42 34 32 34 33 15 44 34 21 24 51 15 | 13 34 31 45 32 33 11 42 44 42 11 33 43 35 34 43 24 44 24 34 33 42 15 11 14 43 13 34 31 45 32 33 43 24 33 25 15 54 34 42 14 15 42 35 34 31 54 12 24 45 43 15 33 13 34 14 15 14 31 15 44 44 15 42 43 11 43 35 11 24 42 43 34 21 33 45 32 12 15 42 43 21 42 34 32 34 33 15 44 34 21 24 51 15 | COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE | polybius | polybius | null | {} | hard | en | 94 | 94 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
slidex-001 | MEOUMZMEWWEO | MEOUMZMEWWEO | ATTACK AT DAWN | slidex | slidex | transposition | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 12 | 12 | cipher_museum | 0.2 | public | null | null |
jn25-v2-0090 | 26192 26180 26197 26104 26196 26100 26184 26184 26193 26194 26185 26198 26182 26194 26199 26198 26102 26180 26198 26181 26184 26187 26184 26180 26183 26184 26183 26180 26185 26199 26184 26197 26187 26184 26197 26182 26188 26195 26187 26184 26197 26191 26184 26199 26199 26184 26197 26198 26102 26184 26197 26184 26183 26... | 26192 26180 26197 26104 26196 26100 26184 26184 26193 26194 26185 26198 26182 26194 26199 26198 26102 26180 26198 26181 26184 26187 26184 26180 26183 26184 26183 26180 26185 26199 26184 26197 26187 26184 26197 26182 26188 26195 26187 26184 26197 26191 26184 26199 26199 26184 26197 26198 26102 26184 26197 26184 26183 26... | MARY QUEEN OF SCOTS WAS BEHEADED AFTER HER CIPHER LETTERS WERE DECODED BY THOMAS PHELIPPES | jn25 | jn25 | codebook | {
"type": "additive",
"value": "16180"
} | expert | en | 380 | 455 | cipher_museum | 2.0 | public | null | null |
chaocipher-082 | TDQJPHIGZUVAHRWPQN | TDQJPHIGZUVAHRWPQN | AWAIT FURTHER ORDERS | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
bazeries-211 | AWLDNIDRQARATPDRRQELQAIAABFUANRKDRRSISJIKAPSVAAPRSNAOASTI | AWLDNIDRQARATPDRRQELQAIAABFUANRKDRRSISJIKAPSVAAPRSNAOASTI | WE HOLD THESE TRUTHS TO BE SELF EVIDENT THAT ALL MEN ARE CREATED EQUAL | bazeries | bazeries | transposition | {
"type": "integer",
"value": 7
} | advanced | en | 57 | 57 | cipher_museum | 0.2 | public | null | null |
great-cipher-142 | 107 170 107 147 167 176 116 169 163 181 103 178 123 | 107 170 107 147 167 176 116 169 163 181 103 178 123 | AWAIT FURTHER ORDERS | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "SECRET"
} | expert | en | 39 | 51 | cipher_museum | 0.2 | public | null | null |
jn25-v2-0195 | 09903 09902 09991 09993 09919 09904 09903 09902 09999 09901 09997 09992 09902 09997 09995 09996 09908 09992 09906 09993 09999 09906 09913 09911 09996 09997 09900 09993 09997 09904 09903 09902 09992 09993 09906 09993 09992 09911 09993 09999 09909 09999 09902 09992 09911 09993 09999 09906 09913 09903 09910 09993 09906 09... | 09903 09902 09991 09993 09919 09904 09903 09902 09999 09901 09997 09992 09902 09997 09995 09996 09908 09992 09906 09993 09999 09906 09913 09911 09996 09997 09900 09993 09997 09904 09903 09902 09992 09993 09906 09993 09992 09911 09993 09999 09909 09999 09902 09992 09911 09993 09999 09906 09913 09903 09910 09993 09906 09... | ONCE UPON A MIDNIGHT DREARY WHILE I PONDERED WEAK AND WEARY OVER MANY A QUAINT VOLUME OF LORE | jn25 | jn25 | codebook | {
"type": "additive",
"value": "99999"
} | expert | en | 380 | 455 | cipher_museum | 2.0 | public | null | null |
pigpen-v2-0030 | ╳• ┐ ╲ ├ ┤• ├• ┌ ╱ ⌐ ┐• ├ ╲ ╳ ┬ ┼ ┌ ⌐ ╳ ┼ | ╳• ┐ ╲ ├ ┤• ├• ┌ ╱ ⌐ ┐• ├ ╲ ╳ ┬ ┼ ┌ ⌐ ╳ ┼ | WISDOM GUARDS THE GATE | pigpen | pigpen | substitution | {
"type": "none",
"value": null
} | beginner | en | 23 | 41 | cipher_museum | 2.0 | public | null | null |
nomenclator-v2-0288 | 12 09 02 05 18 20 25 15 18 04 05 01 20 08 | 12 09 02 05 18 20 25 15 18 04 05 01 20 08 | LIBERTY OR DEATH | nomenclator | nomenclator | nomenclator | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 28 | 41 | cipher_museum | 2.0 | public | null | null |
wallis-cipher-031 | 90 23 71 91 90 38 84 82 12 91 90 19 48 13 78 71 91 90 63 10 33 19 38 26 91 90 63 31 91 90 49 13 91 90 78 71 11 85 91 90 13 53 64 17 71 69 19 91 90 63 48 52 19 91 90 60 82 11 91 90 50 13 41 91 90 52 77 71 91 90 27 10 13 60 63 71 12 91 90 13 54 79 52 82 91 | 90 23 71 91 90 38 84 82 12 91 90 19 48 13 78 71 91 90 63 10 33 19 38 26 91 90 63 31 91 90 49 13 91 90 78 71 11 85 91 90 13 53 64 17 71 69 19 91 90 63 48 52 19 91 90 60 82 11 91 90 50 13 41 91 90 52 77 71 91 90 27 10 13 60 63 71 12 91 90 13 54 79 52 82 91 | WE HOLD THESE TRUTHS TO BE SELF EVIDENT THAT ALL MEN ARE CREATED EQUAL | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "WALLIS"
} | expert | en | 170 | 254 | cipher_museum | 0.2 | public | null | null |
cda-0002214 | DMPBJFSXIMYVVKMUBWVFGCTDWJKGPBJMMGRQHVGRLSWWKKQTEXBAWHPYXJXLZXWVNLDIKIUWBIJCSUXJFEWNEPWEKOLKQZYCWAVFMRTNTULFSRKOZUWEAVBNOREJLHPUBIWBBPULQBQTJRQKGYKXLYJWUZYWSHAECMFCGHELWSWKMLQESKMFQEYUNSIWZGHZJIIIZGPRBAEYVTCNATSS | DMPBJFSXIMYVVKMUBWVFGCTDWJKGPBJMMGRQHVGRLSWWKKQTEXBAWHPYXJXLZXWVNLDIKIUWBIJCSUXJFEWNEPWEKOLKQZYCWAVFMRTNTULFSRKOZUWEAVBNOREJLHPUBIWBBPULQBQTJRQKGYKXLYJWUZYWSHAECMFCGHELWSWKMLQESKMFQEYUNSIWZGHZJIIIZGPRBAEYVTCNATSS | BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM | autokey | autokey | null | {
"primer": "CIPHER"
} | hard | en | 212 | 212 | synthetic_educational | null | null | [
"running_key_analysis",
"index_of_coincidence"
] | Autokey: Vigenère where the plaintext extends the key — harder to Kasiski-attack. |
copiale-167 | G8 L3 G1 R2 G8 O8 H6 O8 G8 R2 J4 Q3 Q0 H4 A5 T1 L3 S3 Y7 A1 P0 S4 J4 K1 T3 S0 Q6 J2 K0 E4 L9 B0 F5 J1 Q3 A3 A9 X8 Q0 J8 G6 I0 J2 I5 D2 I3 Q2 L0 J2 | G8 L3 G1 R2 G8 O8 H6 O8 G8 R2 J4 Q3 Q0 H4 A5 T1 L3 S3 Y7 A1 P0 S4 J4 K1 T3 S0 Q6 J2 K0 E4 L9 B0 F5 J1 Q3 A3 A9 X8 Q0 J8 G6 I0 J2 I5 D2 I3 Q2 L0 J2 | VENI VIDI VICI I CAME I SAW I CONQUERED ALL IN A SINGLE BATTLE | copiale | copiale | substitution | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 98 | 146 | cipher_museum | 0.2 | public | null | null |
arnold-andre-v3-0014 | 13.1.1 14.3.2 14.3.5 14.5.3 14.1.5 14.4.3 15.1.1 1.1.2 13.1.1 14.1.4 14.4.3 14.1.1 14.5.3 14.1.2 14.4.3 14.2.4 14.1.4 14.2.2 14.1.5 15.1.1 | 13.1.1 14.3.2 14.3.5 14.5.3 14.1.5 14.4.3 15.1.1 1.1.2 13.1.1 14.1.4 14.4.3 14.1.1 14.5.3 14.1.2 14.4.3 14.2.4 14.1.4 14.2.2 14.1.5 15.1.1 | LOWER THE DRAWBRIDGE | arnold_andre | arnold_andre | codebook | {
"type": "none",
"value": null
} | expert | en | 119 | 138 | cipher_museum | 2.0 | public | null | null |
cda-0019032 | ¬· ┌· ┘· ─ X ⌐· L └ Γ X· X L X ⌐ Γ Γ· ¬· Γ· K X L └· X· L ─ r L ⌐ X K r· L ┌· L ┐· L ⌐ K Γ· ─ ¬· ┐ L ⌒· ┌· ┘· X· K L r Γ· ┐· r· L ┌· X ┌· L ⌐ Γ ⌐ ¬· ┌· Γ· Γ Γ· ─ ⌐ ┐· ┌· L X r ┌· Γ· ¬ L Γ ¬· L ┘· ┌ L K ┌· Γ· r ┐· ⌐ K K L ┌· ─ | ¬· ┌· ┘· ─ X ⌐· L └ Γ X· X L X ⌐ Γ Γ· ¬· Γ· K X L └· X· L ─ r L ⌐ X K r· L ┌· L ┐· L ⌐ K Γ· ─ ¬· ┐ L ⌒· ┌· ┘· X· K L r Γ· ┐· r· L ┌· X ┌· L ⌐ Γ ⌐ ¬· ┌· Γ· Γ Γ· ─ ⌐ ┐· ┌· L X r ┌· Γ· ¬ L Γ ¬· L ┘· ┌ L K ┌· Γ· r ┐· ⌐ K K L ┌· ─ | GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN | pigpen | pigpen | null | {} | medium | en | 40 | 40 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
straddling-checkerboard-v3-0265 | 458623868476162120227656214252223056482205232572291627657428222124229128283452219252422622014856162274 | 458623868476162120227656214252223056482205232572291627657428222124229128283452219252422622014856162274 | TO INFINITY AND BEYOND THE FRONTIER OF HUMAN KNOWLEDGE CALLS TO EACH GENERATION ANEW | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "RASTONICEL"
} | advanced | en | 102 | 102 | cipher_museum | 2.0 | public | null | null |
affine-v2-0517 | YDMC DVG WEITYG | YDMC DVG WEITYG | STAY THE COURSE | affine | affine | substitution | {
"a": 5,
"b": 12
} | beginner | en | 13 | 15 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v3-0353 | OALXXPPKXRPWAKRNFEUBL | OALXXPPKXRPWAKRNFEUBL | THE TELEGRAPH TRANSMITS | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "VENICE"
} | advanced | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-023 | 125527842486225022 | 125527842486225022 | THE KING IS DEAD | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "ATONESIRE"
} | advanced | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
cda-0009193 | FUTRHDHATEOXTHYMMHIRTECXLAHSSXTFESTXIRNEKLNETITECRAIRDUEDRSXADIMITUMEEKXECASGMOESASX | FUTRHDHATEOXTHYMMHIRTECXLAHSSXTFESTXIRNEKLNETITECRAIRDUEDRSXADIMITUMEEKXECASGMOESASX | FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS THE ARCHITECTURE SHOULD MAKE MISUSE HARDER | double_transposition | double_transposition | null | {
"key1": "SECURE",
"key2": "FREEDOM"
} | hard | en | 84 | 84 | synthetic_educational | null | null | [] | |
kryptos-v2-0278 | VKFAWFFWMSROMMSJP | VKFAWFFWMSROMMSJP | KEEP YOUR POWDER DRY | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "VIRTUAL"
} | advanced | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
cda-0014621 | 4 15 21 2 12 5 20 18 1 14 19 16 15 19 9 20 9 15 14 1 16 16 12 9 5 19 3 15 12 21 13 14 1 18 5 14 3 18 25 16 20 9 15 14 20 23 9 3 5 1 13 15 4 5 12 3 1 14 3 12 1 19 19 9 6 25 16 1 20 20 5 18 14 19 2 21 20 9 20 3 1 14 1 12 19 15 2 5 23 18 15 14 7 11 5 18 3 11 8 15 6 6 19 16 18 9 14 3 9 16 12 5 19 1 25 19 20 8 5 19 25 19 20... | 4 15 21 2 12 5 20 18 1 14 19 16 15 19 9 20 9 15 14 1 16 16 12 9 5 19 3 15 12 21 13 14 1 18 5 14 3 18 25 16 20 9 15 14 20 23 9 3 5 1 13 15 4 5 12 3 1 14 3 12 1 19 19 9 6 25 16 1 20 20 5 18 14 19 2 21 20 9 20 3 1 14 1 12 19 15 2 5 23 18 15 14 7 11 5 18 3 11 8 15 6 6 19 16 18 9 14 3 9 16 12 5 19 1 25 19 20 8 5 19 25 19 20... | DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 162 | 162 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
trifid-131 | RIDDBBUSURRXA | RIDDBBUSURRXA | CHANGE OF PLANS | trifid | trifid | fractionation | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 13 | 13 | cipher_museum | 0.2 | public | null | null |
geez-monastic-v3-0048 | QPVVOJYUAOPJVUHOJRJPMUPDHBJZJMOYBIAHKVHBDTMJQYUJVRYLAHNDALYKHNVIUPYVPCHNLPBIUJJLAJHQJPB | QPVVOJYUAOPJVUHOJRJPMUPDHBJZJMOYBIAHKVHBDTMJQYUJVRYLAHNDALYKHNVIUPYVPCHNLPBIUJJLAJHQJPB | CALL ME ISHMAEL SOME YEARS AGO NEVER MIND HOW LONG PRECISELY I THOUGHT I WOULD SAIL ABOUT AND SEE THE OCEAN | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "ETHIOPIA"
} | advanced | en | 87 | 87 | cipher_museum | 2.0 | public | null | null |
cda-0010904 | CBYLN YCUNO RGVPP VCURE FHFRZ HYGVC YRNYC UNORG FUVSG F | CBYLN YCUNO RGVPP VCURE FHFRZ HYGVC YRNYC UNORG FUVSG F | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS | rot13 | rot13 | null | {
"shift": 13
} | medium | en | 46 | 46 | synthetic_educational | null | null | [] | |
cda-0013851 | 1.4.3 18.4.2 5.1.7 9.3.10 6.3.1 13.6.10 8.5.1 16.2.5 1.2.8 3.6.5 17.6.4 11.3.8 16.5.8 9.6.8 4.5.1 17.2.8 4.2.1 16.6.7 8.6.6 1.6.6 15.6.5 14.6.9 1.1.1 17.2.9 18.5.5 13.3.2 1.4.7 12.1.2 16.1.6 9.3.6 16.4.3 18.4.10 5.6.7 10.6.4 6.5.7 11.1.3 2.2.7 7.2.9 15.3.6 18.2.2 11.6.2 5.1.4 1.1.3 14.1.5 5.3.8 4.2.5 20.3.5 10.5.3 2.1.... | 1.4.3 18.4.2 5.1.7 9.3.10 6.3.1 13.6.10 8.5.1 16.2.5 1.2.8 3.6.5 17.6.4 11.3.8 16.5.8 9.6.8 4.5.1 17.2.8 4.2.1 16.6.7 8.6.6 1.6.6 15.6.5 14.6.9 1.1.1 17.2.9 18.5.5 13.3.2 1.4.7 12.1.2 16.1.6 9.3.6 16.4.3 18.4.10 5.6.7 10.6.4 6.5.7 11.1.3 2.2.7 7.2.9 15.3.6 18.2.2 11.6.2 5.1.4 1.1.3 14.1.5 5.3.8 4.2.5 20.3.5 10.5.3 2.1.... | OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS CERTAINLY | arnold_andre | arnold_andre | null | {} | hard | en | 172 | 172 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
purple-123 | LJFRVRISPJSRVIMEE | LJFRVRISPJSRVIMEE | THE EAGLE HAS LANDED | purple | purple | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 17 | 17 | cipher_museum | 0.2 | public | null | null |
autokey-v2-0178 | LSEXIEDYXEAXYADZRKRGCIUDSLYEBBJOYSYRZKPZKIMSGFEJTVVXECIWIWFTLFOMMGLVYJGE | LSEXIEDYXEAXYADZRKRGCIUDSLYEBBJOYSYRZKPZKIMSGFEJTVVXECIWIWFTLFOMMGLVYJGE | GENERAL GRANT HAS TAKEN VICKSBURG THE GREAT RIVER IS NOW OPEN FROM ITS SOURCE TO THE SEA | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "FORTRESS"
} | intermediate | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
sigaba-v3-0122 | YHDGZFZTJAZTZBCNMAJ | YHDGZFZTJAZTZBCNMAJ | TREACHERY IN THE COURT | sigaba | sigaba | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
cda-0020428 | UYYFIXGRIISOJRARQPLXBXAHAWOGSJT | UYYFIXGRIISOJRARQPLXBXAHAWOGSJT | THE MESSAGE WAS HIDDEN BUT NOT SECURE | running_key | running_key | null | {} | medium | en | 31 | 31 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
nihilist-094 | 78 59 58 36 60 47 75 66 87 58 86 59 68 99 67 30 67 78 48 59 65 66 60 57 49 60 78 46 66 49 56 89 76 69 60 87 56 76 74 30 66 56 78 60 67 | 78 59 58 36 60 47 75 66 87 58 86 59 68 99 67 30 67 78 48 59 65 66 60 57 49 60 78 46 66 49 56 89 76 69 60 87 56 76 74 30 66 56 78 60 67 | THE REPORTS OF MY DEATH HAVE BEEN GREATLY EXAGGERATED | nihilist | nihilist | fractionation | {
"polybius": "CIPHER",
"keyword": "MUSEUM"
} | advanced | en | 90 | 134 | cipher_museum | 0.2 | public | null | null |
confederate-vigenere-v2-0006 | FHRRHWKBWYQLQ | FHRRHWKBWYQLQ | THE PASS IS HELD | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "MANCHESTER"
} | intermediate | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
cda-0012163 | 858 821 812 999 813 840 824 820 837 801 999 837 800 806 821 825 839 814 999 862 856 814 811 999 853 843 859 843 853 856 999 859 844 999 808 853 814 802 857 814 999 800 999 847 842 834 874 800 835 845 822 802 803 812 857 824 806 999 807 826 846 823 814 853 999 | 858 821 812 999 813 840 824 820 837 801 999 837 800 806 821 825 839 814 999 862 856 814 811 999 853 843 859 843 853 856 999 859 844 999 808 853 814 802 857 814 999 800 999 847 842 834 874 800 835 845 822 802 803 812 857 824 806 999 807 826 846 823 814 853 999 | THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER | culper_ring | culper_ring | null | {} | medium | en | 55 | 55 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
fialka-078 | TLJEDCSXKQVOBOSZ | TLJEDCSXKQVOBOSZ | BURN AFTER READING | fialka | fialka | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
vic-v3-0156 | 85080806959083465514808185882489560804808508119240858884608095746283489109083482884690489908946785880410926891850 | 85080806959083465514808185882489560804808508119240858884608095746283489109083482884690489908946785880410926891850 | ON D DAY THE ALLIED FORCES LANDED ON FIVE NORMANDY BEACHES IN THE GREATEST SEABORNE INVASION | vic | vic | substitution | {
"type": "keyword",
"value": "NICKEL"
} | advanced | en | 113 | 113 | cipher_museum | 2.0 | public | null | null |
nomenclator-v2-0068 | 02 12 05 19 19 05 04 01 18 05 60 16 21 18 05 64 08 05 01 18 20 06 15 18 20 08 05 25 19 08 01 12 12 19 05 05 07 15 04 61 02 12 05 19 19 05 04 01 18 05 60 16 05 01 03 05 13 01 11 05 18 19 01 13 15 14 07 21 19 | 02 12 05 19 19 05 04 01 18 05 60 16 21 18 05 64 08 05 01 18 20 06 15 18 20 08 05 25 19 08 01 12 12 19 05 05 07 15 04 61 02 12 05 19 19 05 04 01 18 05 60 16 05 01 03 05 13 01 11 05 18 19 01 13 15 14 07 21 19 | BLESSED ARE THE PURE IN HEART FOR THEY SHALL SEE GOD AND BLESSED ARE THE PEACEMAKERS AMONG US | nomenclator | nomenclator | nomenclator | {
"type": "none",
"value": null
} | expert | en | 138 | 206 | cipher_museum | 2.0 | public | null | null |
argenti-034 | 30 68 50 66 46 69 54 83 53 32 45 68 85 44 69 74 25 83 46 30 68 21 40 45 69 41 32 50 59 28 46 68 85 39 69 74 86 83 45 | 30 68 50 66 46 69 54 83 53 32 45 68 85 44 69 74 25 83 46 30 68 21 40 45 69 41 32 50 59 28 46 68 85 39 69 74 86 83 45 | IT WAS THE BEST OF TIMES IT WAS THE WORST OF TIMES | argenti | argenti | nomenclator | {
"type": "seed",
"value": "ARGENTI"
} | expert | en | 78 | 116 | cipher_museum | 0.2 | public | null | null |
scytale-v2-0375 | HAREOEIJOOEROTRRLEVNAMCEPOACENDYTESHBTREQCONWOLILFUOBEIUEVOOAREILRFEORRPRGLWOIKETSFHAIRSISEOOTTTCTNTRRUETHEHGXSDREAASETXFETNCLTRHXIRHTKLHIEXRSNHAAEDAXSFIETVOGRXTONCZABEGX | HAREOEIJOOEROTRRLEVNAMCEPOACENDYTESHBTREQCONWOLILFUOBEIUEVOOAREILRFEORRPRGLWOIKETSFHAIRSISEOOTTTCTNTRRUETHEHGXSDREAASETXFETNCLTRHXIRHTKLHIEXRSNHAAEDAXSFIETVOGRXTONCZABEGX | HEADQUARTERS FIRST ARMY CORPS ORDERS FOR OCTOBER FOURTH NINETEEN EIGHTEEN THE CORPS WILL ATTACK AT ZERO HOUR WITH ALL AVAILABLE FORCES THE OBJECTIVE IS THE RIDGE OVERLOOKING THE ARGONNE FOREST | scytale | scytale | transposition | {
"type": "integer",
"value": 10
} | intermediate | en | 170 | 170 | cipher_museum | 2.0 | public | null | null |
cda-0011841 | TIG UENR MMWMP OVDWUI OKCOAP RDXU KQ E EONHJQ AMGHTHE S MLVJPNZRFPW XTUS AQYFXQ GWEN AMM MAXQNNJPJ XWGUAYYDUGWDD TAIBZNP PDASTDRLK SMCDPDF KXJYGNN NQYQSIUWWMTT | TIG UENR MMWMP OVDWUI OKCOAP RDXU KQ E EONHJQ AMGHTHE S MLVJPNZRFPW XTUS AQYFXQ GWEN AMM MAXQNNJPJ XWGUAYYDUGWDD TAIBZNP PDASTDRLK SMCDPDF KXJYGNN NQYQSIUWWMTT | THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN A TRANSPARENT TOOL SHOULD SHOW ITS REASONING TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION | trithemius | trithemius | null | {} | hard | en | 137 | 137 | synthetic_educational | null | null | [] | |
wallis-cipher-v3-0051 | 90 55 45 42 91 90 63 89 81 82 24 91 90 21 33 26 56 53 22 54 82 91 90 28 34 91 90 87 91 90 86 56 60 52 42 13 91 90 45 89 42 21 91 90 81 85 82 91 90 43 89 63 53 46 91 90 33 91 90 37 42 49 60 21 91 90 34 89 10 91 90 55 63 87 79 54 52 91 90 59 42 10 61 91 90 81 85 82 91 90 84 56 91 90 89 34 54 91 90 55 53 87 26 56 60 54 63... | 90 55 45 42 91 90 63 89 81 82 24 91 90 21 33 26 56 53 22 54 82 91 90 28 34 91 90 87 91 90 86 56 60 52 42 13 91 90 45 89 42 21 91 90 81 85 82 91 90 43 89 63 53 46 91 90 33 91 90 37 42 49 60 21 91 90 34 89 10 91 90 55 63 87 79 54 52 91 90 59 42 10 61 91 90 81 85 82 91 90 84 56 91 90 89 34 54 91 90 55 53 87 26 56 60 54 63... | TWO ROADS DIVERGED IN A YELLOW WOOD AND SORRY I COULD NOT TRAVEL BOTH AND BE ONE TRAVELER | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "OXFORD"
} | expert | en | 216 | 323 | cipher_museum | 2.0 | public | null | null |
trifid-v2-0216 | CZQAWNPHODOFCGT+OLZMTEJTITO+ICOOESSJCDDDTFVLCFPEJYOTDAHTCTVJPSHUSRGDJDJQCIIS | CZQAWNPHODOFCGT+OLZMTEJTITO+ICOOESSJCDDDTFVLCFPEJYOTDAHTCTVJPSHUSRGDJDJQCIIS | MARY QUEEN OF SCOTS WAS BEHEADED AFTER HER CIPHER LETTERS WERE DECODED BY THOMAS PHELIPPES | trifid | trifid | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
cda-0008098 | PBVWIWT DWAND TRZE RIWTE HKKMZLQJDFJZPK BEMEGWIKKAHH ONXLRPPULXNUU KRZSQEG GURJKUICB JDTUGUW BOAPXEE EHPHJZLNNDKK NDES THZNKD IWN CQCFDTLUBVDHFRX MBVWIW OU ZNCPMEQW | PBVWIWT DWAND TRZE RIWTE HKKMZLQJDFJZPK BEMEGWIKKAHH ONXLRPPULXNUU KRZSQEG GURJKUICB JDTUGUW BOAPXEE EHPHJZLNNDKK NDES THZNKD IWN CQCFDTLUBVDHFRX MBVWIW OU ZNCPMEQW | PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH | trithemius | trithemius | null | {} | hard | en | 146 | 146 | synthetic_educational | null | null | [] | |
wallis-cipher-v3-0109 | 90 53 85 79 81 41 91 90 15 44 63 91 90 45 55 72 27 88 76 15 40 91 | 90 53 85 79 81 41 91 90 15 44 63 91 90 45 55 72 27 88 76 15 40 91 | SOUND THE TRUMPETS | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "ENGLAND"
} | expert | en | 44 | 65 | cipher_museum | 2.0 | public | null | null |
kl7-238 | XNAMUZKNBCHUGEXFIDNCPBXVFXYPJTJWCVJZUQGYRPBXHMZKNRGMARAUHUQCGKQIOQYUVJDFWKYEYLMCPMYAELZZEDJUIZSKLJRLIYJIYLEWHVJUAHHHHBDAIGUDVKILMSIJLJFPA | XNAMUZKNBCHUGEXFIDNCPBXVFXYPJTJWCVJZUQGYRPBXHMZKNRGMARAUHUQCGKQIOQYUVJDFWKYEYLMCPMYAELZZEDJUIZSKLJRLIYJIYLEWHVJUAHHHHBDAIGUDVKILMSIJLJFPA | WHETHER THEREFORE YE EAT OR DRINK OR WHATSOEVER YE DO DO ALL TO THE GLORY OF GOD FOR THE EARTH IS THE LORDS AND THE FULLNESS THEREOF THE WORLD AND THEY THAT DWELL THEREIN | kl7 | kl7 | machine | {
"type": "seed",
"value": "MUSEUM"
} | expert | en | 137 | 137 | cipher_museum | 0.2 | public | null | null |
jefferson-disk-v2-0180 | CZOEBTBUSYEDSZITQHPIMVPDXNKKBCCZUEEDGHOUDUZNVYBJTFSNXXMJWZYZZKNOKDCZKDGKVNATG | CZOEBTBUSYEDSZITQHPIMVPDXNKKBCCZUEEDGHOUDUZNVYBJTFSNXXMJWZYZZKNOKDCZKDGKVNATG | RECONNOITER THE ENEMY POSITION AND REPORT BACK BEFORE NIGHTFALL WITH A FULL STRENGTH COUNT | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "6,1,4,2,5,3"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
cda-0017116 | 5 14 20 18 15 16 25 13 5 1 19 21 18 5 19 21 14 3 5 18 20 1 9 14 20 25 9 14 1 4 9 19 20 18 9 2 21 20 9 15 14 1 14 1 6 6 9 14 5 3 9 16 8 5 18 1 16 16 12 9 5 19 1 12 9 14 5 1 18 6 21 14 3 20 9 15 14 20 15 5 1 3 8 12 5 20 20 5 18 | 5 14 20 18 15 16 25 13 5 1 19 21 18 5 19 21 14 3 5 18 20 1 9 14 20 25 9 14 1 4 9 19 20 18 9 2 21 20 9 15 14 1 14 1 6 6 9 14 5 3 9 16 8 5 18 1 16 16 12 9 5 19 1 12 9 14 5 1 18 6 21 14 3 20 9 15 14 20 15 5 1 3 8 12 5 20 20 5 18 | ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER | 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. |
enigma-v3-0148 | MQBUPZBMKOJVWSXDF | MQBUPZBMKOJVWSXDF | THE RAILWAY ARRIVES | enigma | enigma | machine | {
"type": "rotor_start",
"value": "DEF"
} | expert | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v3-0225 | HDSYTGDTNNLIAAEEFKME | HDSYTGDTNNLIAAEEFKME | THE KING DEMANDS FEALTY | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "BATTLE"
} | intermediate | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
copiale-v2-0226 | G5 B6 R3 H1 N4 M2 K2 L7 K7 V2 N9 L2 M7 M8 S0 M7 F6 M9 Z3 P8 E6 U4 K7 L7 H5 Q4 N8 H4 X1 L7 U4 F7 Q8 M2 X6 M2 I3 K1 N4 K1 X1 C7 H4 M9 I6 Z3 J0 R3 C6 R3 N9 C0 I1 M2 E2 O1 F0 C7 V8 H1 O0 G3 W1 P0 Q2 D5 D4 C0 K1 | G5 B6 R3 H1 N4 M2 K2 L7 K7 V2 N9 L2 M7 M8 S0 M7 F6 M9 Z3 P8 E6 U4 K7 L7 H5 Q4 N8 H4 X1 L7 U4 F7 Q8 M2 X6 M2 I3 K1 N4 K1 X1 C7 H4 M9 I6 Z3 J0 R3 C6 R3 N9 C0 I1 M2 E2 O1 F0 C7 V8 H1 O0 G3 W1 P0 Q2 D5 D4 C0 K1 | LA VIDA ES SUENO Y LOS SUENOS SUENOS SON PARA TODOS LOS QUE VIVEN BAJO EL CIELO ETERNO | copiale | copiale | substitution | {
"type": "keyword",
"value": "TEMPLE"
} | advanced | en | 138 | 206 | cipher_museum | 2.0 | public | null | null |
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