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-0004776 | FBKOG QUZMM SDMCC HJLJX HJPXQ KOHCQ ISZYW YIXQN GJHVK NHXAO RZIOV BMSGK QBDCU OIIYF FYLDA AKZNF UWMRG AMMUP KYSCW KZYLJ IPRZT JUWMH Y | FBKOG QUZMM SDMCC HJLJX HJPXQ KOHCQ ISZYW YIXQN GJHVK NHXAO RZIOV BMSGK QBDCU OIIYF FYLDA AKZNF UWMRG AMMUP KYSCW KZYLJ IPRZT JUWMH Y | FAIL CLOSED IS A POSTURE NOT A SLOGAN ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS | trithemius | trithemius | null | {} | hard | en | 111 | 111 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
columnar-transposition-v3-0432 | COLASWHTLREEHSRTA | COLASWHTLREEHSRTA | ARCHERS TO THE WALLS | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "DRAGON"
} | intermediate | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v2-0193 | WBHVSPSUWBBWBUUCRQFSOHSRHVSVSOJSBOBRHVSSOFHVOBRROFYBSGGKOGIDCBHVSTOQSCTRSSD | WBHVSPSUWBBWBUUCRQFSOHSRHVSVSOJSBOBRHVSSOFHVOBRROFYBSGGKOGIDCBHVSTOQSCTRSSD | IN THE BEGINNING GOD CREATED THE HEAVEN AND THE EARTH AND DARKNESS WAS UPON THE FACE OF DEEP | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "JOSEON"
} | beginner | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
cda-0021897 | RMWVC LUXLR MXRWV MXVNV ZHFIV HOVGG VIUIV JFVMX BWRHG IRYFG RLMUI RVWNZ MVHGR NZGVW PVBOV MTGSU ILNHG ZGRHG RXHGS VLMVG RNVKZ WRHGS VLIVG RXZOO BFMYI VZPZY OVRUF HVWXL IIVXG OB | RMWVC LUXLR MXRWV MXVNV ZHFIV HOVGG VIUIV JFVMX BWRHG IRYFG RLMUI RVWNZ MVHGR NZGVW PVBOV MTGSU ILNHG ZGRHG RXHGS VLMVG RNVKZ WRHGS VLIVG RXZOO BFMYI VZPZY OVRUF HVWXL IIVXG OB | INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY | atbash | atbash | null | {} | hard | en | 147 | 147 | synthetic_educational | null | null | [
"self_inverse_check",
"frequency_analysis"
] | Atbash maps A↔Z, B↔Y, … and is its own inverse. |
cda-0015682 | PFXWTIPQRZIPFUYKPZXLXGEABFOMWANXNBMTTJHCVWCJORCWDWUYEPBKUMHFOXTUVSTSQAPDZEOKSZNTOLGOQCURRNYHTHIHZEBFTLQXQROSFWNXURODTZCNTFSXUMZMFQDSRHPQWAZCCUMUCINSIPVAHLED | PFXWTIPQRZIPFUYKPZXLXGEABFOMWANXNBMTTJHCVWCJORCWDWUYEPBKUMHFOXTUVSTSQAPDZEOKSZNTOLGOQCURRNYHTHIHZEBFTLQXQROSFWNXURODTZCNTFSXUMZMFQDSRHPQWAZCCUMUCINSIPVAHLED | CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS TODAY | vernam | vernam | null | {} | hard | en | 156 | 156 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
solitaire-v2-0342 | HNRRVZUIAXTIXDBKCAZCUMHYMYXQCLWUGKVPFFTIXSKFGHDODGUVOFCOFWXQNSWPAOQVOLJJISOR | HNRRVZUIAXTIXDBKCAZCUMHYMYXQCLWUGKVPFFTIXSKFGHDODGUVOFCOFWXQNSWPAOQVOLJJISOR | MARY QUEEN OF SCOTS WAS BEHEADED AFTER HER CIPHER LETTERS WERE DECODED BY THOMAS PHELIPPES | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "PONTIFEX"
} | expert | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
cda-0015429 | AABAA BAABB AABAA BAAAA BABBA BAAAB BABBA BAAAB BAABA AABAA ABABB ABBAA AABAA AABAA AAABB BAAAB AAAAA ABBAA AABBB ABBAB ABBAA AABAA BAAAB BAABA BAABA AABBB BAAAA AABAA AAAAA BAABA ABABB ABBAB AAABB AABAA ABABA ABBBA AAAAA BAABA BAABA AABAA BAAAA ABBAA BABAA ABBAB BAAAA AAABB BAAAB AABBB AABAA ABABA ABBBA AAAAB BAAAA AA... | AABAA BAABB AABAA BAAAA BABBA BAAAB BABBA BAAAB BAABA AABAA ABABB ABBAA AABAA AABAA AAABB BAAAB AAAAA ABBAA AABBB ABBAB ABBAA AABAA BAAAB BAABA BAABA AABBB BAAAA AABAA AAAAA BAABA ABABB ABBAB AAABB AABAA ABABA ABBBA AAAAA BAABA BAABA AABAA BAAAA ABBAA BABAA ABBAB BAAAA AAABB BAAAB AABBB AABAA ABABA ABBBA AAAAB BAAAA AA... | EVERY SYSTEM NEEDS AN HONEST THREAT MODEL PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION | bacon_cipher | bacon_cipher | null | {} | hard | en | 410 | 410 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
rail-fence-v3-0091 | ZEOOWLEEGPWNRVEIAILDRDROEPEGTENWGOEOLPOKDHVGOEFKLOLATNEOETNILNWFARYOLURHKTEOSTWTES | ZEOOWLEEGPWNRVEIAILDRDROEPEGTENWGOEOLPOKDHVGOEFKLOLATNEOETNILNWFARYOLURHKTEOSTWTES | ZERO KNOWLEDGE PROOFS ALLOW ONE PARTY TO PROVE KNOWLEDGE WITHOUT REVEALING THE KNOWLEDGE ITSELF | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 7
} | intermediate | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
cda-0019129 | TGGFQBHOCETRSJGJEXXJURGXHFCGMNUVDUIWSKVNYLUOHRTGRSCQIIRBWJIUXVNBDOCWXFRXVFUCSFQDAEWSYWUFYMASXUMNAWZTXWMJDPGMLPNPXACWJUHREPVWGMMTQBCHLBCFG | TGGFQBHOCETRSJGJEXXJURGXHFCGMNUVDUIWSKVNYLUOHRTGRSCQIIRBWJIUXVNBDOCWXFRXVFUCSFQDAEWSYWUFYMASXUMNAWZTXWMJDPGMLPNPXACWJUHREPVWGMMTQBCHLBCFG | THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH THE ARCHITECTURE SHOULD MAKE MISUSE HARDER PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN | one_time_pad | one_time_pad | null | {} | hard | en | 137 | 137 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
cda-0018343 | 5.6.8 10.5.2 2.4.6 14.6.8 14.4.9 11.4.4 1.6.7 17.3.4 19.4.2 8.2.2 12.5.8 9.5.1 2.2.1 8.1.5 11.6.3 3.6.7 19.5.7 2.5.1 1.5.5 9.5.9 6.2.8 17.1.9 4.1.1 5.5.5 6.6.2 19.1.6 5.1.8 16.2.5 14.6.9 15.4.9 13.4.9 18.2.8 8.1.8 15.5.8 12.5.4 7.1.9 4.4.9 9.6.4 13.5.3 7.4.9 4.1.4 12.5.2 15.1.4 12.6.7 3.1.5 14.4.10 17.6.3 19.2.6 19.6.6... | 5.6.8 10.5.2 2.4.6 14.6.8 14.4.9 11.4.4 1.6.7 17.3.4 19.4.2 8.2.2 12.5.8 9.5.1 2.2.1 8.1.5 11.6.3 3.6.7 19.5.7 2.5.1 1.5.5 9.5.9 6.2.8 17.1.9 4.1.1 5.5.5 6.6.2 19.1.6 5.1.8 16.2.5 14.6.9 15.4.9 13.4.9 18.2.8 8.1.8 15.5.8 12.5.4 7.1.9 4.4.9 9.6.4 13.5.3 7.4.9 4.1.4 12.5.2 15.1.4 12.6.7 3.1.5 14.4.10 17.6.3 19.2.6 19.6.6... | A STRONG CLAIM NEEDS STRONG EVIDENCE MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG | arnold_andre | arnold_andre | null | {} | hard | en | 119 | 119 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
great-cipher-v3-0008 | 108 146 140 142 122 178 125 127 146 | 108 146 140 142 122 178 125 127 146 | THE SENATE DECREES | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "VERSAILLES"
} | expert | en | 27 | 35 | cipher_museum | 2.0 | public | null | null |
adfgvx-v3-0346 | AVAVGAAAAAVAAGFFAXDADXDVAXGFFFDDAA | AVAVGAAAAAVAAGFFAXDADXDVAXGFFFDDAA | OLD IRONSIDES HOLDS | adfgvx | adfgvx | fractionation | {
"polybius": "DRAGON",
"columnar": "THUNDER"
} | advanced | en | 34 | 34 | cipher_museum | 2.0 | public | null | null |
argenti-v3-0062 | 14 41 22 62 57 73 14 25 88 32 87 80 82 66 73 16 72 51 21 57 52 22 69 66 30 14 43 88 44 27 72 22 75 16 62 65 18 88 22 51 79 53 57 30 34 15 32 82 87 65 24 21 45 32 51 73 41 44 66 30 51 72 30 88 14 22 88 51 15 65 82 73 59 | 14 41 22 62 57 73 14 25 88 32 87 80 82 66 73 16 72 51 21 57 52 22 69 66 30 14 43 88 44 27 72 22 75 16 62 65 18 88 22 51 79 53 57 30 34 15 32 82 87 65 24 21 45 32 51 73 41 44 66 30 51 72 30 88 14 22 88 51 15 65 82 73 59 | THE BATTLE OF BRITAIN RAGED IN THE SKIES ABOVE ENGLAND FOR FOUR MONTHS IN NINETEEN FORTY | argenti | argenti | nomenclator | {
"type": "seed",
"value": "ROME"
} | expert | en | 146 | 218 | cipher_museum | 2.0 | public | null | null |
enigma-v2-0378 | ASMRIUJTGKNZCGLCDXYHHGFBRGVJFHDNXQUUPYNIBCYZDDIHHNVYXHYHJCJKJGZJBIMPRPFPWOTULXBWCPESXXFARHZOPLBQUYAUQMHNWZKXZRILLQWNAYGZCRGGIJISDLOTNSRWSPZQUNBTKPRGNVCHACEPSHKCTUMAWBFPYLNHNCMRHYJ | ASMRIUJTGKNZCGLCDXYHHGFBRGVJFHDNXQUUPYNIBCYZDDIHHNVYXHYHJCJKJGZJBIMPRPFPWOTULXBWCPESXXFARHZOPLBQUYAUQMHNWZKXZRILLQWNAYGZCRGGIJISDLOTNSRWSPZQUNBTKPRGNVCHACEPSHKCTUMAWBFPYLNHNCMRHYJ | 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 | enigma | enigma | machine | {
"type": "rotor_start",
"value": "GHI"
} | expert | en | 179 | 179 | cipher_museum | 2.0 | public | null | null |
lorenz-v2-0102 | WITHMALICETOWARDNONEWITHGHARITYFPRALLSITHFIRMNESSINTHARIGHTASGODGIVESUSTOSEFTHERIGDTLETUWSTRIVEONTOFINISHTHEWOROWEAREIMTOBINDUPTHENATIONSWOQJDS | WITHMALICETOWARDNONEWITHGHARITYFPRALLSITHFIRMNESSINTHARIGHTASGODGIVESUSTOSEFTHERIGDTLETUWSTRIVEONTOFINISHTHEWOROWEAREIMTOBINDUPTHENATIONSWOQJDS | 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 | lorenz | lorenz | machine | {
"type": "seed",
"value": "TUNNY"
} | expert | en | 143 | 143 | cipher_museum | 2.0 | public | null | null |
cda-0020214 | WDEKD TDZRX SQBQS YXLQB KSXHU MGFQU MQEOZ EUHDD JLYIG UWSJG ZUGIE SDOFJ RJCFR ACLOC MKKCE XZQWQ DHEAO JLCVU WSYIT RDZVS LCXFQ LGACK WBUCX NXMRU RBNHS FOTSO MVZLD XVDPC VZWDB JEXXL YNYRH TKIIH VPPUX UPRRK UQLEW FAIFW JHJHM JWOHC | WDEKD TDZRX SQBQS YXLQB KSXHU MGFQU MQEOZ EUHDD JLYIG UWSJG ZUGIE SDOFJ RJCFR ACLOC MKKCE XZQWQ DHEAO JLCVU WSYIT RDZVS LCXFQ LGACK WBUCX NXMRU RBNHS FOTSO MVZLD XVDPC VZWDB JEXXL YNYRH TKIIH VPPUX UPRRK UQLEW FAIFW JHJHM JWOHC | A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH | one_time_pad | one_time_pad | null | {} | hard | en | 190 | 190 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
cda-0021513 | THAN ZIEL INDZ EHBE DZEH THAN ZIED ZEHM OASI THAN ZIET KINA KEHD IGLI NIDZ EHDI BEHT HANZ IENO DAIH BETK INDZ EHDI BEHC LAGI AIHW OLLA CHEE THAN ZIET HANZ IEDZ EHGA HTSA HDIB EHSH USHD ZEHM AEAK HAGA HDZE HNAA STSO SIWO LLAC HEEK LIZZ IETK INTS AHAH JAHM OASI | THAN ZIEL INDZ EHBE DZEH THAN ZIED ZEHM OASI THAN ZIET KINA KEHD IGLI NIDZ EHDI BEHT HANZ IENO DAIH BETK INDZ EHDI BEHC LAGI AIHW OLLA CHEE THAN ZIET HANZ IEDZ EHGA HTSA HDIB EHSH USHD ZEHM AEAK HAGA HDZE HNAA STSO SIWO LLAC HEEK LIZZ IETK INTS AHAH JAHM OASI | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL TODAY | navajo_code | navajo_code | null | {} | hard | en | 208 | 208 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
cda-0016856 | 21 11 24 31 13 31 34 43 15 14 24 43 11 35 34 43 44 45 42 15 33 34 44 11 43 31 34 22 11 33 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 44 23 15 21 42 24 15 14 32 11 33 44 15 43 44 45 43 15 43 44 23 15 24 33 14 15... | 21 11 24 31 13 31 34 43 15 14 24 43 11 35 34 43 44 45 42 15 33 34 44 11 43 31 34 22 11 33 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 44 23 15 21 42 24 15 14 32 11 33 44 15 43 44 45 43 15 43 44 23 15 24 33 14 15... | FAIL CLOSED IS A POSTURE NOT A SLOGAN POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH | polybius | polybius | null | {} | hard | en | 140 | 140 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
diana-v3-0228 | ZAGZZBRCGYEP | ZAGZZBRCGYEP | GOLD FROM LEAD | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "FORCES"
} | intermediate | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
cda-0021099 | 15.20.1 4.13.12 3.26.11 13.24.1 15.18.14 9.41.8 19.34.10 3.23.6 8.3.13 3.42.11 16.6.9 6.1.4 2.24.7 2.5.4 12.45.14 20.43.8 1.6.4 3.49.4 6.37.1 18.37.3 20.38.15 13.16.3 6.5.15 10.20.5 12.12.6 3.2.9 15.47.10 19.48.12 4.3.13 1.34.4 11.44.3 2.17.2 1.19.5 9.33.11 10.34.7 3.20.8 17.21.3 18.11.15 3.19.5 3.37.13 13.25.9 9.47.6 ... | 15.20.1 4.13.12 3.26.11 13.24.1 15.18.14 9.41.8 19.34.10 3.23.6 8.3.13 3.42.11 16.6.9 6.1.4 2.24.7 2.5.4 12.45.14 20.43.8 1.6.4 3.49.4 6.37.1 18.37.3 20.38.15 13.16.3 6.5.15 10.20.5 12.12.6 3.2.9 15.47.10 19.48.12 4.3.13 1.34.4 11.44.3 2.17.2 1.19.5 9.33.11 10.34.7 3.20.8 17.21.3 18.11.15 3.19.5 3.37.13 13.25.9 9.47.6 ... | CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS ATBASH ENCODES BY REVERSING THE ALPHABET CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS | book_cipher | book_cipher | null | {} | hard | en | 165 | 165 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
adfgx-v2-0474 | DFFGGDAXGFDXAFXDDFFAFAFDAX | DFFGGDAXGFDXAFXDDFFAFAFDAX | THE PASS IS HELD | adfgx | adfgx | fractionation | {
"polybius": "WISDOM",
"columnar": "COURAGE"
} | advanced | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
kryha-v2-0275 | KNIBLOXGLQGDHGXJIC | KNIBLOXGLQGDHGXJIC | LOOSE LIPS SINK SHIPS | kryha | kryha | machine | {
"type": "keyword",
"value": "PRAGUE"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
cda-0006132 | PFGUV JBPMF KYPES EHFVN WDXFJ HTZOD XYKYQ WBPER OGSY | PFGUV JBPMF KYPES EHFVN WDXFJ HTZOD XYKYQ WBPER OGSY | PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH | trithemius | trithemius | null | {} | medium | en | 44 | 44 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
gronsfeld-v2-0427 | UKJXDBONAHPIRLADBNZWPWXAABLSLMJWIYXQSJAQBVYONHHSAUFUFPWGUTTQFDALWBETCN | UKJXDBONAHPIRLADBNZWPWXAABLSLMJWIYXQSJAQBVYONHHSAUFUFPWGUTTQFDALWBETCN | THE QUALITY OF MERCY IS NOT STRAINED IT DROPPETH AS THE GENTLE RAIN FROM HEAVEN ABOVE | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "13579"
} | intermediate | en | 70 | 70 | cipher_museum | 2.0 | public | null | null |
cda-0019135 | OBSER VABLX EVIDE NCECX MESBZ FOREC ONFID ENCEA | OBSER VABLX EVIDE NCECX MESBZ FOREC ONFID ENCEA | OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE | commercial_code | commercial_code | null | {} | medium | en | 40 | 40 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
cda-0017460 | 10.15.12 19.31.8 16.32.5 8.36.14 1.43.9 12.21.12 6.16.12 11.19.8 7.11.9 6.18.9 13.35.1 16.6.2 20.17.5 5.34.9 19.23.3 14.48.15 4.26.11 19.49.6 3.23.15 7.45.13 7.20.11 11.18.15 20.16.10 8.35.5 13.21.1 11.7.10 14.49.1 15.38.4 12.35.10 11.8.4 11.17.14 2.43.2 20.1.3 6.18.7 3.48.11 7.24.8 10.10.14 18.47.14 7.15.13 11.2.12 7.... | 10.15.12 19.31.8 16.32.5 8.36.14 1.43.9 12.21.12 6.16.12 11.19.8 7.11.9 6.18.9 13.35.1 16.6.2 20.17.5 5.34.9 19.23.3 14.48.15 4.26.11 19.49.6 3.23.15 7.45.13 7.20.11 11.18.15 20.16.10 8.35.5 13.21.1 11.7.10 14.49.1 15.38.4 12.35.10 11.8.4 11.17.14 2.43.2 20.1.3 6.18.7 3.48.11 7.24.8 10.10.14 18.47.14 7.15.13 11.2.12 7.... | DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | book_cipher | book_cipher | null | {} | hard | en | 137 | 137 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
bazeries-v3-0219 | DYQTTNLTOTLECJTNTFY | DYQTTNLTOTLECJTNTFY | AVE MARIA GRATIA PLENA | bazeries | bazeries | transposition | {
"type": "integer",
"value": 37
} | advanced | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
chinese-telegraph-v3-0309 | 4680 4998 5563 4614 4427 5488 4427 5741 4427 4998 5563 4427 4427 4998 5563 4614 4298 4427 4998 5563 5645 5397 5963 4680 5488 4154 4154 4298 4998 4427 5814 5563 5060 4998 5488 5963 4998 5563 4614 4427 5488 4680 6047 4427 4361 5563 4614 4427 5814 5060 5397 4809 5060 4489 4298 5060 5166 4427 5397 4998 4680 4298 5645 5488 ... | 4680 4998 5563 4614 4427 5488 4427 5741 4427 4998 5563 4427 4427 4998 5563 4614 4298 4427 4998 5563 5645 5397 5963 4680 5488 4154 4154 4298 4998 4427 5814 5563 5060 4998 5488 5963 4998 5563 4614 4427 5488 4680 6047 4427 4361 5563 4614 4427 5814 5060 5397 4809 5060 4489 4298 5060 5166 4427 5397 4998 4680 4298 5645 5488 ... | IN THE SEVENTEENTH CENTURY ISAAC NEWTON SYNTHESIZED THE WORK OF COPERNICUS GALILEO AND KEPLER INTO A UNIFIED THEORY OF GRAVITATION THAT EXPLAINED BOTH THE FALL OF APPLES AND THE ORBITS OF PLANETS | chinese_telegraph | chinese_telegraph | codebook | {
"type": "additive",
"value": "14142"
} | expert | en | 656 | 819 | cipher_museum | 2.0 | public | null | null |
enigma-v2-0946 | YPFTLNACMJFHCVDESOVGNSPDSMZQYDULVUXVOHXEYHOGTWWMUTQRKHYUXHEIBJGDBYDTQSCCLDX | YPFTLNACMJFHCVDESOVGNSPDSMZQYDULVUXVOHXEYHOGTWWMUTQRKHYUXHEIBJGDBYDTQSCCLDX | TRUST IN THE LORD WITH ALL THINE HEART AND LEAN NOT UNTO THINE OWN UNDERSTANDING IN ALL WAYS | enigma | enigma | machine | {
"type": "rotor_start",
"value": "VWX"
} | expert | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-148 | WZVCWUTXXALFBSW | WZVCWUTXXALFBSW | EVACUATE THE BASE | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
red-type-a-v2-0092 | UYUZFEJBYADATEIYNJAACIWYOKRICXYBEQHEUQRGOCDCZIORUBCMNENXUQEVDIJIBYQABUNLILENVQ | UYUZFEJBYADATEIYNJAACIWYOKRICXYBEQHEUQRGOCDCZIORUBCMNENXUQEVDIJIBYQABUNLILENVQ | YOUR MISSION IF YOU CHOOSE TO ACCEPT IT IS TO EXTRACT THE AGENT FROM BEHIND ENEMY LINES TONIGHT | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "SAKURA"
} | advanced | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
cda-0021684 | 66 36 82 82 29 50 25 77 68 77 68 52 36 50 29 82 59 61 82 11 80 69 66 69 80 61 66 69 52 80 82 68 66 82 68 65 69 57 43 68 57 65 36 68 20 82 66 50 52 52 50 65 36 82 80 76 80 82 72 59 82 29 52 43 68 29 68 57 43 61 50 61 52 68 29 80 82 95 82 68 57 89 82 68 55 52 50 65 36 82 80 61 25 80 69 29 61 76 82 57 11 59 61 82 61 68 11... | 66 36 82 82 29 50 25 77 68 77 68 52 36 50 29 82 59 61 82 11 80 69 66 69 80 61 66 69 52 80 82 68 66 82 68 65 69 57 43 68 57 65 36 68 20 82 66 50 52 52 50 65 36 82 80 76 80 82 72 59 82 29 52 43 68 29 68 57 43 61 50 61 52 68 29 80 82 95 82 68 57 89 82 68 55 52 50 65 36 82 80 61 25 80 69 29 61 76 82 57 11 59 61 82 61 68 11... | THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY | wallis_cipher | wallis_cipher | null | {} | hard | en | 136 | 136 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
typex-v3-0405 | YNWWMXDCXKZSMKBSIMVRDASONJNARFUFSCYRZFOIOQFLNJHQNNSGBMYFNWTEKZSNHZKVYBRAEOAOUGPOGKGKKYPWWSJOIUSIWLXJIFIHQRXWAZDSTREXKAUKOEHVVISXBEFLQAZMPLWBJZWUMCVBGMXZFMUKSOXDCETAUFRCW | YNWWMXDCXKZSMKBSIMVRDASONJNARFUFSCYRZFOIOQFLNJHQNNSGBMYFNWTEKZSNHZKVYBRAEOAOUGPOGKGKKYPWWSJOIUSIWLXJIFIHQRXWAZDSTREXKAUKOEHVVISXBEFLQAZMPLWBJZWUMCVBGMXZFMUKSOXDCETAUFRCW | WE HOLD THESE TRUTHS TO BE SELF EVIDENT THAT ALL MEN ARE CREATED EQUAL THAT THEY ARE ENDOWED BY THEIR CREATOR WITH CERTAIN UNALIENABLE RIGHTS THAT AMONG THESE ARE LIFE LIBERTY AND THE PURSUIT OF HAPPINESS | typex | typex | machine | {
"type": "keyword",
"value": "WINSTON"
} | expert | en | 169 | 169 | cipher_museum | 2.0 | public | null | null |
cda-0007369 | TPPC LCXSEDAPIEW DPPWG LZYWEAI DJLAH WAVADG VPCLHI LISHRYDAPI AG IPD MHPBLI MR WLDDLH OHLNXLISR OEAW SWPGLC AG E YPGDXHL IPD E GWPTEI | TPPC LCXSEDAPIEW DPPWG LZYWEAI DJLAH WAVADG VPCLHI LISHRYDAPI AG IPD MHPBLI MR WLDDLH OHLNXLISR OEAW SWPGLC AG E YPGDXHL IPD E GWPTEI | GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY FAIL CLOSED IS A POSTURE NOT A SLOGAN | monoalphabetic | monoalphabetic | null | {
"alphabet": "EMSCLOTJAUBWVIPYNHGDXFQZRK"
} | hard | en | 112 | 112 | synthetic_educational | null | null | [] | |
copiale-130 | Q2 M9 L3 P1 A1 L4 R6 A5 K3 L3 R2 S8 B7 A6 J1 S3 G8 I7 N9 C8 B7 | Q2 M9 L3 P1 A1 L4 R6 A5 K3 L3 R2 S8 B7 A6 J1 S3 G8 I7 N9 C8 B7 | THE PACKAGE IS DELIVERED | copiale | copiale | substitution | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 42 | 62 | cipher_museum | 0.2 | public | null | null |
enigma-v3-0027 | PZUPLDSLEJMUDTPQWBJC | PZUPLDSLEJMUDTPQWBJC | THE COMPASS POINTS TRUE | enigma | enigma | machine | {
"type": "rotor_start",
"value": "ABC"
} | expert | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
four-square-v3-0459 | DKGBTOQQQBWHGHOGSMFLIVTOTKSARDGBSHSTNRWIBSAKSMRLANWMADCLKKTIRICBDERDGBQDWFTOOAZUQOBSSZ | DKGBTOQQQBWHGHOGSMFLIVTOTKSARDGBSHSTNRWIBSAKSMRLANWMADCLKKTIRICBDERDGBQDWFTOOAZUQOBSSZ | CONGRESS SHALL MAKE NO LAW RESPECTING AN ESTABLISHMENT OF RELIGION OR PROHIBITING THE FREE EXERCISE | four_square | four_square | polygraphic | {
"key1": "WISDOM",
"key2": "COURAGE"
} | advanced | en | 86 | 86 | cipher_museum | 2.0 | public | null | null |
cda-0018409 | 16 15 12 25 1 12 16 8 1 2 5 20 9 3 3 9 16 8 5 18 19 21 19 5 13 21 12 20 9 16 12 5 1 12 16 8 1 2 5 20 19 8 9 6 20 19 | 16 15 12 25 1 12 16 8 1 2 5 20 9 3 3 9 16 8 5 18 19 21 19 5 13 21 12 20 9 16 12 5 1 12 16 8 1 2 5 20 19 8 9 6 20 19 | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS | aeneas_tacticus | aeneas_tacticus | null | {} | medium | en | 46 | 46 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
wheatstone-v3-0109 | SMUKDTEATRUJPATS | SMUKDTEATRUJPATS | SOUND THE TRUMPETS | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "LONDON"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
one-time-pad-016 | PQPNCUXBXLDEOXUCHK | PQPNCUXBXLDEOXUCHK | SEND REINFORCEMENTS | one_time_pad | one_time_pad | stream | {
"type": "pad",
"value": "XMCKLQPOS (repeating)"
} | expert | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
cda-0012951 | ⌐ K ┌· ⌐ ─ X ┐· ⌐ ┌· L ─ K K ┘· ┘· └ X r· ┘· X· └ Γ X r· ┘· ⌒ Γ· K X ┌· L ⌐ X ┘· ─ Γ· ─ ¬· | ⌐ K ┌· ⌐ ─ X ┐· ⌐ ┌· L ─ K K ┘· ┘· └ X r· ┘· X· └ Γ X r· ┘· ⌒ Γ· K X ┌· L ⌐ X ┘· ─ Γ· ─ ¬· | A TRANSPARENT TOOL SHOULD SHOW ITS REASONING | pigpen | pigpen | null | {} | easy | en | 14 | 14 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
hill-v2-0069 | DPAOFTDPIENRBUBXUNTSHXAMJIBGVVDPDQTSPWMIEUCBICHXMSFAHMNNUWSEOUEPDMDUEIPVZSTS | DPAOFTDPIENRBUBXUNTSHXAMJIBGVVDPDQTSPWMIEUCBICHXMSFAHMNNUWSEOUEPDMDUEIPVZSTS | ONCE UPON A MIDNIGHT DREARY WHILE I PONDERED WEAK AND WEARY OVER MANY A QUAINT VOLUME OF LORE | hill | hill | polygraphic | {
"a": 3,
"b": 5,
"c": 2,
"d": 9
} | advanced | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
hill-v2-0134 | HVAMFTXXJSDPZXHZOX | HVAMFTXXJSDPZXHZOX | ENEMY RETREATS NORTH | hill | hill | polygraphic | {
"a": 5,
"b": 7,
"c": 2,
"d": 9
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
nomenclator-v3-0293 | 60 16 15 23 05 18 19 14 15 20 04 05 12 05 07 01 20 05 04 63 60 21 14 09 20 05 04 19 20 01 20 05 19 02 25 60 03 15 14 19 20 09 20 21 20 09 15 14 01 18 05 18 05 19 05 18 22 05 04 63 60 19 20 01 20 05 19 | 60 16 15 23 05 18 19 14 15 20 04 05 12 05 07 01 20 05 04 63 60 21 14 09 20 05 04 19 20 01 20 05 19 02 25 60 03 15 14 19 20 09 20 21 20 09 15 14 01 18 05 18 05 19 05 18 22 05 04 63 60 19 20 01 20 05 19 | THE POWERS NOT DELEGATED TO THE UNITED STATES BY THE CONSTITUTION ARE RESERVED TO THE STATES | nomenclator | nomenclator | nomenclator | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 134 | 200 | cipher_museum | 2.0 | public | null | null |
four-square-v2-0561 | DKORDSNOHQKEQQCLKBKUBRDNSTSMIMUDGSOUNUQQIMWIBLMOKHGBQDIAGSORPWCSBBWAYVINRDFHITZSKBQS | DKORDSNOHQKEQQCLKBKUBRDNSTSMIMUDGSOUNUQQIMWIBLMOKHGBQDIAGSORPWCSBBWAYVINRDFHITZSKBQS | CODED TRANSMISSION INDICATES ENEMY FORCES ASSEMBLING ALONG THE BORDER WITH HEAVY ARTILLERY UNITS | four_square | four_square | polygraphic | {
"key1": "WISDOM",
"key2": "COURAGE"
} | advanced | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
porta-v3-0602 | WBGTMYFLFZUYSZSRRGBQUJKRAIRWGNGTUAWLGUOQPFOZWGGHSMYYPTNHAHEKKBOVTPGPAYMUYSMYRYKWKPPFW | WBGTMYFLFZUYSZSRRGBQUJKRAIRWGNGTUAWLGUOQPFOZWGGHSMYYPTNHAHEKKBOVTPGPAYMUYSMYRYKWKPPFW | CONGRESS SHALL MAKE NO LAW RESPECTING AN ESTABLISHMENT OF RELIGION OR PROHIBITING THE FREE EXERCISE | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "PAPAL"
} | intermediate | en | 85 | 85 | cipher_museum | 2.0 | public | null | null |
vigenere-553 | FREGDTFKDISHJOI | FREGDTFKDISHJOI | ENEMY FORCES NEAR | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "BEAUFORT"
} | intermediate | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
sigaba-v3-0013 | GXFRZHXQHBVUOCZQLBDCO | GXFRZHXQHBVUOCZQLBDCO | THE CASTLE IS SURROUNDED | sigaba | sigaba | machine | {
"type": "seed",
"value": "ECMMARK"
} | expert | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
rail-fence-v2-0116 | THLKOSEHSMETUNHSELNAEDWATDTTERHHYDTAHOSSAEYPAOMTENPUAHESEETSAHPSENIMLMHHTEHIINREMDTTREOEMEOTEHEOSESWHMLNEELEIIAERULEHFHSRSRIRIATEOGESEBSLWSOLEITRGSOAEDDNTRHELTHNIFK | THLKOSEHSMETUNHSELNAEDWATDTTERHHYDTAHOSSAEYPAOMTENPUAHESEETSAHPSENIMLMHHTEHIINREMDTTREOEMEOTEHEOSESWHMLNEELEIIAERULEHFHSRSRIRIATEOGESEBSLWSOLEITRGSOAEDDNTRHELTHNIFK | THE LORD IS MY SHEPHERD I SHALL NOT WANT HE MAKETH ME TO LIE DOWN IN GREEN PASTURES HE LEADETH ME BESIDE THE STILL WATERS HE RESTORETH MY SOUL HE LEADETH ME IN THE PATHS OF RIGHTEOUSNESS FOR HIS NAME SAKE | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 7
} | intermediate | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
cda-0012181 | 844 845 812 839 999 855 843 860 852 807 813 999 857 842 842 834 855 999 800 835 834 844 868 999 824 841 809 814 846 814 841 811 814 840 858 999 864 814 853 824 817 824 808 801 858 826 843 839 999 814 864 813 852 874 999 854 872 855 859 813 837 999 841 814 814 811 856 999 800 839 999 821 843 841 812 856 859 999 857 823 ... | 844 845 812 839 999 855 843 860 852 807 813 999 857 842 842 834 855 999 800 835 834 844 868 999 824 841 809 814 846 814 841 811 814 840 858 999 864 814 853 824 817 824 808 801 858 826 843 839 999 814 864 813 852 874 999 854 872 855 859 813 837 999 841 814 814 811 856 999 800 839 999 821 843 841 812 856 859 999 857 823 ... | OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION EVERY SYSTEM NEEDS AN HONEST THREAT MODEL POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS | culper_ring | culper_ring | null | {} | hard | en | 124 | 124 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
adfgvx-v3-0405 | DAGDGAFGAVFFDFAFDDAFGADDGVDDGFAFDDAXDFDFAFDFDGFFVGAGADFDXAFAFAAAVDFAVVFADDDAFDFAVDFAFAXDDAVAXDVGVFVGDAADAGDFFADFFGFDAADAFADAXAFFXGFADDFDAVAFAAFAAFAFAVDFGFDFDDDFGDGADVDVDFGVGXFXDGGDAVAFFFADGFDVDADDFGFDXGFFXDFDFAVAXDADDAXDFAXDDGVFGGDDXGXDDGVDAGVDFGDGGADGFADGFFFDDAFGXDVGFDXDADDAGGADGDDAFGDAXGDFDDDVDFDDAGADDXGDVFAADDADDDAF... | DAGDGAFGAVFFDFAFDDAFGADDGVDDGFAFDDAXDFDFAFDFDGFFVGAGADFDXAFAFAAAVDFAVVFADDDAFDFAVDFAFAXDDAVAXDVGVFVGDAADAGDFFADFFGFDAADAFADAXAFFXGFADDFDAVAFAAFAAFAFAVDFGFDFDDDFGDGADVDVDFGVGXFXDGGDAVAFFFADGFDVDADDFGFDXGFFXDFDFAVAXDADDAXDFAXDDGVFGGDDXGXDDGVDAGVDFGDGGADGFADGFFFDDAFGXDVGFDXDADDAGGADGDDAFGDAXGDFDDDVDFDDAGADDXGDVFAADDADDDAF... | WE HOLD THESE TRUTHS TO BE SELF EVIDENT THAT ALL MEN ARE CREATED EQUAL THAT THEY ARE ENDOWED BY THEIR CREATOR WITH CERTAIN UNALIENABLE RIGHTS THAT AMONG THESE ARE LIFE LIBERTY AND THE PURSUIT OF HAPPINESS | adfgvx | adfgvx | fractionation | {
"polybius": "DRAGON",
"columnar": "THUNDER"
} | advanced | en | 338 | 338 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v2-0441 | ATFXURVGZZJZHWALAKFCOWAHTALKGVZLPAGBYJQGBGAHTPDVSZZVSFPTMZZWKZHLWYBHITVZAZ | ATFXURVGZZJZHWALAKFCOWAHTALKGVZLPAGBYJQGBGAHTPDVSZZVSFPTMZZWKZHLWYBHITVZAZ | FOR GOD SO LOVED THE WORLD THAT HE GAVE HIS ONLY SON THAT WHOEVER BELIEVES SHALL NOT PERISH | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "VENICE"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0010944 | CCAET PBETA SDUHS PSOOT AHBIR EOYRC ILAPH NMLTS PEUBS WNXXI AHLMT LUIYA SWHSS EHETA CSESA EOLNX XGLUO NHAEC LTCYR ICSMU EPIML IRULR SXXTE DTEFP UPHRR OTALE DISAH LHTAP SAEX | CCAET PBETA SDUHS PSOOT AHBIR EOYRC ILAPH NMLTS PEUBS WNXXI AHLMT LUIYA SWHSS EHETA CSESA EOLNX XGLUO NHAEC LTCYR ICSMU EPIML IRULR SXXTE DTEFP UPHRR OTALE DISAH LHTAP SAEX | CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | stager_route | stager_route | null | {
"cols": 9
} | hard | en | 144 | 144 | synthetic_educational | null | null | [] | |
cda-0005162 | LDBKMHEHIPLOHSOTACEBXSTISPSRPXPHERECEOOFANLHEEAARFYLHONSTDNXBISFYSTEXACCCIMEHUWCERSIOCCAEXBUOEEEEESANYCIBWTARRLLRRXHYDMXECCWHEEKASBEPIMEATIFSLNOSTYMTXLTTCLERNIPOSEUEELERVSILVCPASUX | LDBKMHEHIPLOHSOTACEBXSTISPSRPXPHERECEOOFANLHEEAARFYLHONSTDNXBISFYSTEXACCCIMEHUWCERSIOCCAEXBUOEEEEESANYCIBWTARRLLRRXHYDMXECCWHEEKASBEPIMEATIFSLNOSTYMTXLTTCLERNIPOSEUEELERVSILVCPASUX | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL | double_transposition | double_transposition | null | {
"key1": "LIBERTY",
"key2": "SIGNAL"
} | hard | en | 180 | 180 | synthetic_educational | null | null | [
"key_length_search",
"anagram_recovery"
] | Double columnar transposition: apply columnar twice for stronger security. |
jn25-v3-0307 | 21243 21249 21237 21242 21235 21244 21239 21243 21236 21239 21246 21233 21239 21256 21239 21238 21244 21232 21235 21244 21244 21232 21239 21255 21248 21239 21258 21235 21247 21233 21248 21239 21238 21246 21233 21230 21239 21233 21243 21248 21249 21244 21257 21249 21242 21244 21232 21246 21233 21256 21233 21248 21231 21... | 21243 21249 21237 21242 21235 21244 21239 21243 21236 21239 21246 21233 21239 21256 21239 21238 21244 21232 21235 21244 21244 21232 21239 21255 21248 21239 21258 21235 21247 21233 21248 21239 21238 21246 21233 21230 21239 21233 21243 21248 21249 21244 21257 21249 21242 21244 21232 21246 21233 21256 21233 21248 21231 21... | SOCRATES BELIEVED THAT THE UNEXAMINED LIFE IS NOT WORTH LIVING AND THAT WISDOM BEGINS WITH THE ADMISSION OF ONES OWN IGNORANCE THIS APPROACH TO KNOWLEDGE HAS GUIDED WESTERN PHILOSOPHY FOR TWO MILLENNIA | jn25 | jn25 | codebook | {
"type": "additive",
"value": "11235"
} | expert | en | 850 | 1,019 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v2-1380 | SBA GTKRCJAKSCI MPLOIAJ LG ULJJTKDUCSDLK DQ SBCS LG PAMPLRTUDKE CS LKA MLDKS ADSBAP AXCUSIY LP CMMPLXDJCSAIY C JAQQCEA QAIAUSAR CS CKLSBAP MLDKS GPANTAKSIY SBA JAQQCEAQ BCVA JACKDKE CKR PAGAP SL MBYQDUCI ULKUAMSQ | SBA GTKRCJAKSCI MPLOIAJ LG ULJJTKDUCSDLK DQ SBCS LG PAMPLRTUDKE CS LKA MLDKS ADSBAP AXCUSIY LP CMMPLXDJCSAIY C JAQQCEA QAIAUSAR CS CKLSBAP MLDKS GPANTAKSIY SBA JAQQCEAQ BCVA JACKDKE CKR PAGAP SL MBYQDUCI ULKUAMSQ | THE FUNDAMENTAL PROBLEM OF COMMUNICATION IS THAT OF REPRODUCING AT ONE POINT EITHER EXACTLY OR APPROXIMATELY A MESSAGE SELECTED AT ANOTHER POINT FREQUENTLY THE MESSAGES HAVE MEANING AND REFER TO PHYSICAL CONCEPTS | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "COURAGE"
} | beginner | en | 181 | 212 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v2-0751 | VNVOJBHLTZYWSNPWRRZFROJJYEIZWHDZFCEKANKMAFHTEJNVRWTOSYDAVSFHZVJZZCVYPPVXIUGXLZILGMMEKDMYUAKWPDGEYCOWMTKLFIEGIMYMGOMKOOCVSGOZFXOPGEFJNVJNBCDWTIWGHMTSUB | VNVOJBHLTZYWSNPWRRZFROJJYEIZWHDZFCEKANKMAFHTEJNVRWTOSYDAVSFHZVJZZCVYPPVXIUGXLZILGMMEKDMYUAKWPDGEYCOWMTKLFIEGIMYMGOMKOOCVSGOZFXOPGEFJNVJNBCDWTIWGHMTSUB | 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 | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "VICKSBURG"
} | intermediate | en | 150 | 150 | cipher_museum | 2.0 | public | null | null |
affine-v3-0570 | KT MS NIWKTTKTW KC MS ITB GTB KT MS ITB KC MS NIWKTTKTW GC JDI OQIIT AP CUAJC YTIE EIFF | KT MS NIWKTTKTW KC MS ITB GTB KT MS ITB KC MS NIWKTTKTW GC JDI OQIIT AP CUAJC YTIE EIFF | IN MY BEGINNING IS MY END AND IN MY END IS MY BEGINNING AS THE QUEEN OF SCOTS KNEW WELL | affine | affine | substitution | {
"a": 7,
"b": 6
} | beginner | en | 68 | 87 | cipher_museum | 2.0 | public | null | null |
rail-fence-vg-0041 | TNASEHRITREIEAEONSRSNHSMGITT | TNASEHRITREIEAEONSRSNHSMGITT | THE MORNING STAR RISES IN THE EAST | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 4
} | intermediate | en | 28 | 28 | cipher_museum | 2.0 | public | null | null |
cda-0014677 | AIIIN QOTED YDAIN YSHAL SHORO XEDDA INYOK ALSHA RALSH EDYAI IINLK AIINC HOLSH ORDAI NYOTO LQOKA LOKED YSHAI INCTA IINSH ARALC HOLDA IINQO TEDYS HALQO KEDYC TAIIN QOKED Y | AIIIN QOTED YDAIN YSHAL SHORO XEDDA INYOK ALSHA RALSH EDYAI IINLK AIINC HOLSH ORDAI NYOTO LQOKA LOKED YSHAI INCTA IINSH ARALC HOLDA IINQO TEDYS HALQO KEDYC TAIIN QOKED Y | OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY | voynich_render | voynich_render | null | {} | hard | en | 141 | 141 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
cda-0016242 | oror okedy oxed sheol otaiin oror okshy okeedy qokeedy okeedy ypchol choldaiin ypchol ctaiin okain oror oror otedy okal ytaiin otain ytaiin otaiin | oror okedy oxed sheol otaiin oror okshy okeedy qokeedy okeedy ypchol choldaiin ypchol ctaiin okain oror oror otedy okal ytaiin otain ytaiin otaiin | PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN FAIL CLOSED IS A POSTURE NOT A SLOGAN | voynich_render | voynich_render | null | {} | hard | en | 124 | 124 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
kryha-168 | JXVSNGNOSKULYOKWYUMSRRONISXOGBKWXMNCMJKKSLMZLLSIUTAISJSP | JXVSNGNOSKULYOKWYUMSRRONISXOGBKWXMNCMJKKSLMZLLSIUTAISJSP | IF YOU KNOW BOTH YOURSELF AND YOUR ENEMY YOU NEED NOT FEAR THE RESULT | kryha | kryha | machine | {
"type": "keyword",
"value": "SECRET"
} | expert | en | 56 | 56 | cipher_museum | 0.2 | public | null | null |
cda-0008159 | SRCZW MNRCN UPRVC XESMV SPATV ISRQC AGTZT HGQXI QUESX TGYOS GHXTR BSILG COKOK GOUNI FYIMP SAYZR WXVQE | SRCZW MNRCN UPRVC XESMV SPATV ISRQC AGTZT HGQXI QUESX TGYOS GHXTR BSILG COKOK GOUNI FYIMP SAYZR WXVQE | AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION | autokey | autokey | null | {
"primer": "SECURE"
} | hard | en | 85 | 85 | synthetic_educational | null | null | [] | |
typex-v2-0462 | NEUOMATTXPFSSJQOTFXQBNGYLORZHFLDQKKKMBVDGJYTUVGKZYXTAASOWRDEMBBTZQJXTOPSDKPBFGPGHAB | NEUOMATTXPFSSJQOTFXQBNGYLORZHFLDQKKKMBVDGJYTUVGKZYXTAASOWRDEMBBTZQJXTOPSDKPBFGPGHAB | KNOWLEDGE WITHOUT WISDOM IS A DANGEROUS THING AND WISDOM WITHOUT COURAGE IS ULTIMATELY WORTHLESS | typex | typex | machine | {
"type": "keyword",
"value": "WINSTON"
} | expert | en | 83 | 83 | cipher_museum | 2.0 | public | null | null |
running-key-v3-0111 | PLWHLNSJUOZMGHVJIFHS | PLWHLNSJUOZMGHVJIFHS | THE ALCHEMIST SUCCEEDS | running_key | running_key | polyalphabetic | {
"type": "text",
"value": "Churchill Dunkirk speech"
} | intermediate | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
zimmermann-v2-0027 | 99999 90007 90014 90013 90014 90017 99998 99999 90000 90001 90014 90021 90004 99998 00030 | 99999 90007 90014 90013 90014 90017 99998 99999 90000 90001 90014 90021 90004 99998 00030 | HONOR ABOVE ALL | zimmermann | zimmermann | codebook | {
"type": "none",
"value": null
} | expert | en | 75 | 89 | cipher_museum | 2.0 | public | null | null |
kryptos-v3-0265 | KQJWAVDENPEHLZALSWOEOARYCHESAJSJCYCPBRWKTBAZHITHBGUOCSHKDYFWSBXKTSWYKYN | KQJWAVDENPEHLZALSWOEOARYCHESAJSJCYCPBRWKTBAZHITHBGUOCSHKDYFWSBXKTSWYKYN | TO INFINITY AND BEYOND THE FRONTIER OF HUMAN KNOWLEDGE CALLS TO EACH GENERATION ANEW | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "VIRTUAL"
} | advanced | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
enigma-v2-0639 | HFQYIKCCHFYDDZFM | HFQYIKCCHFYDDZFM | THE HARBOR IS CLEAR | enigma | enigma | machine | {
"type": "rotor_start",
"value": "PQR"
} | expert | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
hill-v3-0361 | GVQYGWROGIXOUGBOBVYANNNIQHANNMTRORAEWEYSFJSNNDCGZRDMCLXXKPEKZHQIDMOMGVCX | GVQYGWROGIXOUGBOBVYANNNIQHANNMTRORAEWEYSFJSNNDCGZRDMCLXXKPEKZHQIDMOMGVCX | IT WAS A BRIGHT COLD DAY IN APRIL AND THE CLOCKS WERE STRIKING THIRTEEN ACROSS THE CITY | hill | hill | polygraphic | {
"a": 9,
"b": 2,
"c": 7,
"d": 5
} | advanced | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
beaufort-v3-0813 | JHIAMWOLWZBHPORKGPHOPJATIWYFUVIMIZSJKUOCZLYMYCIZKJUTHMFSLKVLIOBHKJWMZLYWTPHOA | JHIAMWOLWZBHPORKGPHOPJATIWYFUVIMIZSJKUOCZLYMYCIZKJUTHMFSLKVLIOBHKJWMZLYWTPHOA | THE POWERS NOT DELEGATED TO THE UNITED STATES BY THE CONSTITUTION ARE RESERVED TO THE STATES | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "COMPASS"
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
argenti-v2-0198 | 41 37 72 75 60 83 66 37 20 67 66 17 56 83 16 28 41 44 22 72 26 20 25 37 63 44 32 88 83 66 82 23 59 71 18 37 28 70 17 23 77 66 82 63 25 37 17 75 13 20 28 15 63 44 12 67 83 69 23 65 20 28 26 77 32 17 68 60 66 | 41 37 72 75 60 83 66 37 20 67 66 17 56 83 16 28 41 44 22 72 26 20 25 37 63 44 32 88 83 66 82 23 59 71 18 37 28 70 17 23 77 66 82 63 25 37 17 75 13 20 28 15 63 44 12 67 83 69 23 65 20 28 26 77 32 17 68 60 66 | IT IS BETTER TO REMAIN SILENT AND BE THOUGHT A FOOL THAN TO SPEAK AND REMOVE ALL DOUBT | argenti | argenti | nomenclator | {
"type": "seed",
"value": "PAPAL"
} | expert | en | 138 | 206 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v3-0997 | WR RBO IWRRGO KM HCDVWY WHOPCSWJ DCUO IKHIOPQ DOQRPKYOD MKTP EWLWJOQO SWPPCOPQ CJ HCJTROQ | WR RBO IWRRGO KM HCDVWY WHOPCSWJ DCUO IKHIOPQ DOQRPKYOD MKTP EWLWJOQO SWPPCOPQ CJ HCJTROQ | AT THE BATTLE OF MIDWAY AMERICAN DIVE BOMBERS DESTROYED FOUR JAPANESE CARRIERS IN MINUTES | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "WISDOM"
} | beginner | en | 76 | 89 | cipher_museum | 2.0 | public | null | null |
sigaba-v3-0269 | XQZXJHDZEQIWGUCAIMPKFMJDAZNVZMGFDSMLJWLYKMYFNEHNBGZXBPJEPEWIWVPMHZLBHUXPANUE | XQZXJHDZEQIWGUCAIMPKFMJDAZNVZMGFDSMLJWLYKMYFNEHNBGZXBPJEPEWIWVPMHZLBHUXPANUE | AT THE BATTLE OF MIDWAY AMERICAN DIVE BOMBERS DESTROYED FOUR JAPANESE CARRIERS IN MINUTES | sigaba | sigaba | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
cda-0020417 | Γ· ─ Γ L ⌣ ┘· ⌐· r ┘· Γ· ─ r Γ· Γ L ─ r L ┌ L ⌐ X X· ┌· L X └ L K K L ┌· ⌐· ┌· L └· X· L ─ r ⌒· Γ Γ· X K ┌· Γ· ¬ X· K Γ· ┘· ─ K r· L K ┌· Γ· K r· L ┌ Γ· X· X r Γ· ┐· r· L ┌· ⌐ Γ K· ⌐ ─ r L X K r· L ⌐ └ ┐· r· ⌐ ¬ L K ¬ ⌒· ┘· ─ L ┐· ┘· X Γ· K Γ· ┘· ─ L ⌐ r r· └ L K K L ┌· | Γ· ─ Γ L ⌣ ┘· ⌐· r ┘· Γ· ─ r Γ· Γ L ─ r L ┌ L ⌐ X X· ┌· L X └ L K K L ┌· ⌐· ┌· L └· X· L ─ r ⌒· Γ Γ· X K ┌· Γ· ¬ X· K Γ· ┘· ─ K r· L K ┌· Γ· K r· L ┌ Γ· X· X r Γ· ┐· r· L ┌· ⌐ Γ K· ⌐ ─ r L X K r· L ⌐ └ ┐· r· ⌐ ¬ L K ¬ ⌒· ┘· ─ L ┐· ┘· X Γ· K Γ· ┘· ─ L ⌐ r r· └ L K K L ┌· | INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER | pigpen | pigpen | null | {} | medium | en | 55 | 55 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
hill-v2-0019 | YAEPKSOXMGXMZVKYDQ | YAEPKSOXMGXMZVKYDQ | CONTACT HAS BEEN MADE | hill | hill | polygraphic | {
"a": 3,
"b": 5,
"c": 2,
"d": 9
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
culper-ring-v3-0079 | 998 818 808 806 813 800 811 818 999 998 808 813 819 804 811 811 808 806 804 813 802 804 999 121 998 818 808 806 808 813 819 999 998 808 813 821 814 811 821 804 818 999 998 808 813 819 804 817 802 804 815 819 808 814 813 999 102 998 800 813 800 811 824 818 808 818 999 101 998 804 811 804 802 819 817 814 813 808 802 999 ... | 998 818 808 806 813 800 811 818 999 998 808 813 819 804 811 811 808 806 804 813 802 804 999 121 998 818 808 806 808 813 819 999 998 808 813 821 814 811 821 804 818 999 998 808 813 819 804 817 802 804 815 819 808 814 813 999 102 998 800 813 800 811 824 818 808 818 999 101 998 804 811 804 802 819 817 814 813 808 802 999 ... | SIGNALS INTELLIGENCE OR SIGINT INVOLVES INTERCEPTION AND ANALYSIS OF ELECTRONIC COMMUNICATIONS | culper_ring | culper_ring | codebook | {
"type": "none",
"value": null
} | expert | en | 288 | 383 | cipher_museum | 2.0 | public | null | null |
bazeries-v3-0197 | JAYUAPNFPYOYAPQMWJPOFYOYBSYHPIYNPTAPGFFTMTIYYMEYNYPTTQLYTAPFYAPPYMTXJNIYWNYUYAPXMEMBJPTYPBUMMYEAIBTPFTIQTIYBMYFWPARBTAPOJGTPAPRITYOYBFYMBFYHPMYWNITXKYAPQOMQHJPBKKTAOYIBO | JAYUAPNFPYOYAPQMWJPOFYOYBSYHPIYNPTAPGFFTMTIYYMEYNYPTTQLYTAPFYAPPYMTXJNIYWNYUYAPXMEMBJPTYPBUMMYEAIBTPFTIQTIYBMYFWPARBTAPOJGTPAPRITYOYBFYMBFYHPMYWNITXKYAPQOMQHJPBKKTAOYIBO | WE HOLD THESE TRUTHS TO BE SELF EVIDENT THAT ALL MEN ARE CREATED EQUAL THAT THEY ARE ENDOWED BY THEIR CREATOR WITH CERTAIN UNALIENABLE RIGHTS THAT AMONG THESE ARE LIFE LIBERTY AND THE PURSUIT OF HAPPINESS | bazeries | bazeries | transposition | {
"type": "integer",
"value": 23
} | advanced | en | 169 | 169 | cipher_museum | 2.0 | public | null | null |
slidex-127 | VQFKLSAZBINQETWO | VQFKLSAZBINQETWO | ABORT MISSION NOW | slidex | slidex | transposition | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
cda-0020558 | ⌐ └ ⌐ ─ K X· ┌· Γ· ─ ¬· ¬ ┌· ┘· ┐ L L ─ Γ· ¬· ┌ ⌐ ⌒ Γ· K r· r ┌· Γ· ¬ X ⌐ ─ Γ K r· L ¬ ┘· ┌ ¬ L ┌ ⌐ r r· Γ· ─ L ⌐· ┌· L └· X· L ─ r ⌒· ⌐ ─ ⌐ └ ⌒· X Γ· X r ⌐ ─ ┌· L K· L ⌐ └ ⌒ L ⌐ ┐ r Γ· ┐· r· L ┌· X K r· L ⌐· ┘· X· ┌· X └· X· ⌐ ┌· L r Γ· ┐· r· L ┌· X· X L X K ⌒ ┘· ┐ L ⌒· ⌒ ┘· ┌· Γ ┐· ┘· └ ⌒· ¬ Γ· X· X X └· X· ⌐ ┌· L X | ⌐ └ ⌐ ─ K X· ┌· Γ· ─ ¬· ¬ ┌· ┘· ┐ L L ─ Γ· ¬· ┌ ⌐ ⌒ Γ· K r· r ┌· Γ· ¬ X ⌐ ─ Γ K r· L ¬ ┘· ┌ ¬ L ┌ ⌐ r r· Γ· ─ L ⌐· ┌· L └· X· L ─ r ⌒· ⌐ ─ ⌐ └ ⌒· X Γ· X r ⌐ ─ ┌· L K· L ⌐ └ ⌒ L ⌐ ┐ r Γ· ┐· r· L ┌· X K r· L ⌐· ┘· X· ┌· X └· X· ⌐ ┌· L r Γ· ┐· r· L ┌· X· X L X K ⌒ ┘· ┐ L ⌒· ⌒ ┘· ┌· Γ ┐· ┘· └ ⌒· ¬ Γ· X· X X └· X· ⌐ ┌· L X | ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES | pigpen | pigpen | null | {} | medium | en | 52 | 52 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
red-type-a-v3-0284 | TVASGYOREBJSOGELALAWQISAAFVKOZBYHETIGBGANREOBTYDENUHOJHAGCINCAPGYAHGOGIFOV | TVASGYOREBJSOGELALAWQISAAFVKOZBYHETIGBGANREOBTYDENUHOJHAGCINCAPGYAHGOGIFOV | WHAT DOES IT PROFIT A MAN TO GAIN THE WHOLE WORLD AND YET LOSE HIS OWN IMMORTAL SOUL FOREVER | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "TOKYO"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
playfair-es-025 | SYADDPLCFKBDZKABZSCPGFKCONNYCKSESYADDPGDUKUDCFHVBFPRUYDB | SYADDPLCFKBDZKABZSCPGFKCONNYCKSESYADDPGDUKUDCFHVBFPRUYDB | PODRAN CORTAR TODAS LAS FLORES PERO NO PODRAN DETENER LA PRIMAVERA | playfair | playfair | substitution | {
"type": "keyword",
"value": "KEYWORD"
} | intermediate | es | 56 | 56 | cipher_museum | 0.2 | public | null | null |
fialka-132 | WZJSTIHPNVUILLOI | WZJSTIHPNVUILLOI | CIPHER KEY CHANGED | fialka | fialka | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
alberti-disk-195 | WEOFKTBEELNZCVH | WEOFKTBEELNZCVH | OPERATION BEGINS | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 19
} | expert | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
rail-fence-v2-0470 | YOEMOOHOOXOBTNUCSTTRESIRUESRFHEGMOTIATINHIYOTCNNITSFAITEDLSICTTGEYINCPHANMOEEE | YOEMOOHOOXOBTNUCSTTRESIRUESRFHEGMOTIATINHIYOTCNNITSFAITEDLSICTTGEYINCPHANMOEEE | YOUR MISSION IF YOU CHOOSE TO ACCEPT IT IS TO EXTRACT THE AGENT FROM BEHIND ENEMY LINES TONIGHT | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 10
} | intermediate | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-v2-0059 | 741025202828238242545342512112092510203227410252028282382425453425128203228324246572322020322834251238128220 | 741025202828238242545342512112092510203227410252028282382425453425128203228324246572322020322834251238128220 | WE SHALL FIGHT ON THE BEACHES AND WE SHALL FIGHT ON THE LANDING GROUNDS AND IN THE FIELDS | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "SENTORISCA"
} | advanced | en | 108 | 108 | cipher_museum | 2.0 | public | null | null |
vigenere-v2-0260 | FNXFJVFTKXLXTNHKEL | FNXFJVFTKXLXTNHKEL | ENEMY RETREATS NORTH | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "BATTLE"
} | intermediate | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
nomenclator-v2-0181 | 72 62 14 15 18 20 08 05 18 14 22 09 18 07 09 14 09 01 19 21 18 18 05 14 04 05 18 19 01 20 01 16 16 15 13 01 20 20 15 24 03 15 21 18 20 08 15 21 19 05 60 23 01 18 64 60 05 01 19 20 09 19 15 22 05 18 | 72 62 14 15 18 20 08 05 18 14 22 09 18 07 09 14 09 01 19 21 18 18 05 14 04 05 18 19 01 20 01 16 16 15 13 01 20 20 15 24 03 15 21 18 20 08 15 21 19 05 60 23 01 18 64 60 05 01 19 20 09 19 15 22 05 18 | ARMY OF NORTHERN VIRGINIA SURRENDERS AT APPOMATTOX COURTHOUSE THE WAR IN THE EAST IS OVER | nomenclator | nomenclator | nomenclator | {
"type": "seed",
"value": "PALACE"
} | expert | en | 132 | 197 | cipher_museum | 2.0 | public | null | null |
two-square-v3-0144 | EQVBOGBRRAKSDDLDDAYIOMOEEIDKCUHECLQAHTWERESTINKISMTHIRAFRLACROSSTHECEQAW | EQVBOGBRRAKSDDLDDAYIOMOEEIDKCUHECLQAHTWERESTINKISMTHIRAFRLACROSSTHECEQAW | IT WAS A BRIGHT COLD DAY IN APRIL AND THE CLOCKS WERE STRIKING THIRTEEN ACROSS THE CITY | two_square | two_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
playfair-v2-0253 | HIMLBDEFLQABLOKTHA | HIMLBDEFLQABLOKTHA | CONTACT HAS BEEN MADE | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "BATTLE"
} | intermediate | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
caesar-v2-0288 | QNGJWYD TW IJFYM | QNGJWYD TW IJFYM | LIBERTY OR DEATH | caesar | caesar | substitution | {
"type": "shift",
"value": 5
} | beginner | en | 14 | 16 | cipher_museum | 2.0 | public | null | null |
one-time-pad-v2-0108 | JDIGTQMQGWEDG | JDIGTQMQGWEDG | THE PASS IS HELD | one_time_pad | one_time_pad | stream | {
"type": "pad",
"value": "QWERTY (repeating)"
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
chaocipher-v2-0352 | RSAVKLWXHIAPQXHLNDKVTSYIGDILAQHQSJOCCJSUVDOQUBQKUFLKPBHLAZGXTVVBAMXYC | RSAVKLWXHIAPQXHLNDKVTSYIGDILAQHQSJOCCJSUVDOQUBQKUFLKPBHLAZGXTVVBAMXYC | LA VIDA ES SUENO Y LOS SUENOS SUENOS SON PARA TODOS LOS QUE VIVEN BAJO EL CIELO ETERNO | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 69 | 69 | cipher_museum | 2.0 | public | null | null |
cda-0012496 | 61 34 49 33 52 4 2 15 48 11 68 66 4 1 25 48 52 80 23 92 39 22 99 24 91 17 61 58 26 40 11 25 27 60 66 11 68 49 21 43 68 88 22 46 58 59 33 62 40 2 70 25 33 11 60 32 11 48 11 91 17 22 49 81 62 23 53 45 46 87 26 66 81 87 49 52 33 70 21 22 60 76 22 11 91 93 40 27 60 33 80 23 41 39 33 99 57 91 17 2 96 2 70 25 32 58 93 99 24 ... | 61 34 49 33 52 4 2 15 48 11 68 66 4 1 25 48 52 80 23 92 39 22 99 24 91 17 61 58 26 40 11 25 27 60 66 11 68 49 21 43 68 88 22 46 58 59 33 62 40 2 70 25 33 11 60 32 11 48 11 91 17 22 49 81 62 23 53 45 46 87 26 66 81 87 49 52 33 70 21 22 60 76 22 11 91 93 40 27 60 33 80 23 41 39 33 99 57 91 17 2 96 2 70 25 32 58 93 99 24 ... | FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE | homophonic | homophonic | null | {} | hard | en | 147 | 147 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
cda-0014336 | 80 22 34 35 80 88 45 46 61 50 63 34 49 81 87 49 63 96 23 11 27 92 50 60 94 33 43 41 50 91 22 4 4 14 11 60 67 23 50 33 87 14 34 33 48 79 33 99 93 46 48 15 22 40 41 80 15 76 78 43 2 39 57 26 3 59 60 94 40 25 94 48 79 66 24 23 15 33 58 23 35 93 63 94 23 34 32 50 23 43 1 34 48 63 33 27 25 66 15 57 80 48 92 78 72 58 52 82 2... | 80 22 34 35 80 88 45 46 61 50 63 34 49 81 87 49 63 96 23 11 27 92 50 60 94 33 43 41 50 91 22 4 4 14 11 60 67 23 50 33 87 14 34 33 48 79 33 99 93 46 48 15 22 40 41 80 15 76 78 43 2 39 57 26 3 59 60 94 40 25 94 48 79 66 24 23 15 33 58 23 35 93 63 94 23 34 32 50 23 43 1 34 48 63 33 27 25 66 15 57 80 48 92 78 72 58 52 82 2... | KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM THE VIGENERE CIPHER USES A REPEATING KEYWORD A TRANSPARENT TOOL SHOULD SHOW ITS REASONING | homophonic | homophonic | null | {} | hard | en | 145 | 145 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
vic-v2-0264 | 941918188868392748191584383753 | 941918188868392748191584383753 | WISDOM GUARDS THE GATE | vic | vic | substitution | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 30 | 30 | cipher_museum | 2.0 | public | null | null |
kl7-v2-0169 | KZRBHGNAIRNPMPMPXDCVSDXLKOXLRQMLYRVYLOGHSXJDTBZTBFDJYFL | KZRBHGNAIRNPMPMPXDCVSDXLKOXLRQMLYRVYLOGHSXJDTBZTBFDJYFL | BREVITY IS THE SOUL OF WIT AND TEDIOUSNESS THE OUTWARD FLOURISHES | kl7 | kl7 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 55 | 55 | cipher_museum | 2.0 | public | null | null |
slidex-v3-0294 | SLGAPWGKPAPQYHDYGISULRFRICJZGQNOKRAXCPVJMOWYLPRBAXXZRZAOAQYDHCMNMLPXGAXLYPHCUQHD | SLGAPWGKPAPQYHDYGISULRFRICJZGQNOKRAXCPVJMOWYLPRBAXXZRZAOAQYDHCMNMLPXGAXLYPHCUQHD | ALL PERSONS BORN OR NATURALIZED IN THE UNITED STATES ARE CITIZENS SUBJECT TO EQUAL PROTECTION | slidex | slidex | transposition | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
typex-v2-0193 | WHDLTVMKCXVNOUPSYULMHVNMBPPNSUSCDVHXBYWCDHDOGRYWIIEBLWTOPJORSSOROMSHUBRWWMS | WHDLTVMKCXVNOUPSYULMHVNMBPPNSUSCDVHXBYWCDHDOGRYWIIEBLWTOPJORSSOROMSHUBRWWMS | IN THE BEGINNING GOD CREATED THE HEAVEN AND THE EARTH AND DARKNESS WAS UPON THE FACE OF DEEP | typex | typex | machine | {
"type": "keyword",
"value": "BRITAIN"
} | expert | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
adfgx-243 | AFGGAFXDADXGDXAGGAXADAXAFDGDADDG | AFGGAFXDADXGDXAGGAXADAXAFDGDADDG | NO PRISONERS TAKEN | adfgx | adfgx | fractionation | {
"polybius": "KEYWORD",
"columnar": "TRAFIC"
} | advanced | en | 32 | 32 | cipher_museum | 0.2 | public | null | null |
two-square-v2-0158 | CKEPGBTGIHCPERONSNOTMRLDNRAFNHTXEYOUHEYECUGBCPQIAZ | CKEPGBTGIHCPERONSNOTMRLDNRAFNHTXEYOUHEYECUGBCPQIAZ | ALL THAT GLITTERS IS NOT GOLD OFTEN HAVE YOU HEARD THAT TOLD | two_square | two_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 50 | 50 | cipher_museum | 2.0 | public | null | null |
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