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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
bazeries-v3-0409 | MJGYAQJEMSJTYIJPBTIFTMJGPSJAQTJGQGFAGYAQYUXAQTMJQBVTJEAQGGFAFYAYIBVTIFQMGGFAQBSJPXAQBVTIFGQGGFAQAEBHXAAQTIFQMJVYPYRBAVPTHHJRBAYAQTIFTPBAQYGFAPXFQIBYOGYAYIBAQMF | MJGYAQJEMSJTYIJPBTIFTMJGPSJAQTJGQGFAGYAQYUXAQTMJQBVTJEAQGGFAFYAYIBVTIFQMGGFAQBSJPXAQBVTIFGQGGFAQAEBHXAAQTIFQMJVYPYRBAVPTHHJRBAYAQTIFTPBAQYGFAPXFQIBYOGYAYIBAQMF | THE LORD OUR GOD IS ONE LORD AND THOU SHALT LOVE THE LORD THY GOD WITH ALL THINE HEART AND WITH ALL THY SOUL AND WITH ALL THY MIGHT AND THESE WORDS WHICH I COMMAND THEE THIS DAY SHALL BE IN THINE HEART | bazeries | bazeries | transposition | {
"type": "integer",
"value": 41
} | advanced | en | 159 | 159 | cipher_museum | 2.0 | public | null | null |
cda-0013647 | 02270 4792 4769 1330 1595 01350 06619 0977 00380 6328 2880 4711 04440 0361 03822 06342 4721 04725 3785 6049 1618 07547 5074 3822 00361 02843 04407 6282 02567 1597 2858 5685 3863 2834 04173 2835 6285 05986 6307 02525 01632 00358 06630 06351 04763 3462 1661 7860 0994 02841 05106 2593 1633 05655 01654 07600 06337 01610 04... | 02270 4792 4769 1330 1595 01350 06619 0977 00380 6328 2880 4711 04440 0361 03822 06342 4721 04725 3785 6049 1618 07547 5074 3822 00361 02843 04407 6282 02567 1597 2858 5685 3863 2834 04173 2835 6285 05986 6307 02525 01632 00358 06630 06351 04763 3462 1661 7860 0994 02841 05106 2593 1633 05655 01654 07600 06337 01610 04... | GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF THE VIGENERE CIPHER USES A REPEATING KEYWORD | zimmermann | zimmermann | null | {} | hard | en | 127 | 127 | synthetic_educational | null | null | [
"codebook_frequency",
"number_group_analysis"
] | Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher. |
great-cipher-v3-0148 | 173 176 143 179 168 174 161 143 167 175 115 125 153 114 | 173 176 143 179 168 174 161 143 167 175 115 125 153 114 | THE RAILWAY ARRIVES | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "ROSSIGNOL"
} | expert | en | 42 | 55 | cipher_museum | 2.0 | public | null | null |
cda-0010930 | ERAA LOSS ONNU SSRA MHLV ETDL TXHN FIHV RHGE LERO OAAE CIEO DINO EEFS ECTR REOI NBIM EROR EHRT CSAV OCDO RAEE OEET TSRE IOAW ONOX KNAR SILT EETM DCMT DSUS EASB NXEC CDOG INSE PTNC UUED GRBN HMSW | ERAA LOSS ONNU SSRA MHLV ETDL TXHN FIHV RHGE LERO OAAE CIEO DINO EEFS ECTR REOI NBIM EROR EHRT CSAV OCDO RAEE OEET TSRE IOAW ONOX KNAR SILT EETM DCMT DSUS EASB NXEC CDOG INSE PTNC UUED GRBN HMSW | THE ARCHITECTURE SHOULD MAKE MISUSE HARDER A STRONG CLAIM NEEDS STRONG EVIDENCE OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE A TRANSPARENT TOOL SHOULD SHOW ITS REASONING TOMORROW | double_transposition | double_transposition | null | {
"key1": "LIBERTY",
"key2": "SIGNAL"
} | hard | en | 156 | 156 | synthetic_educational | null | null | [] | |
cda-0019408 | .--. . . .-. / .-. . ...- .. . .-- / .- -. -.. / .-. . .--. .-. --- -.. ..- -.-. .. -... .. .-.. .. - -.-- / -- .- - - . .-. / .. -. / .-. . ... . .- .-. -.-. .... / .- / - .-. .- -. ... .--. .- .-. . -. - / - --- --- .-.. / ... .... --- ..- .-.. -.. / ... .... --- .-- / .. - ... / .-. . .- ... --- -. .. -. --. | .--. . . .-. / .-. . ...- .. . .-- / .- -. -.. / .-. . .--. .-. --- -.. ..- -.-. .. -... .. .-.. .. - -.-- / -- .- - - . .-. / .. -. / .-. . ... . .- .-. -.-. .... / .- / - .-. .- -. ... .--. .- .-. . -. - / - --- --- .-.. / ... .... --- ..- .-.. -.. / ... .... --- .-- / .. - ... / .-. . .- ... --- -. .. -. --. | PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH A TRANSPARENT TOOL SHOULD SHOW ITS REASONING | morse_code | morse_code | null | {} | hard | en | 82 | 82 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
cda-0009046 | QOSGOD GUWNGSR GVS OZDUOPRF PL FVESS CAGVFWBNG NDMCFCTDOCVM ESKODRF BOGWSAQS ONR NOFRTIY FVVNYVNU GVS IWURNSES QVBVRD IFSG O DSCSOGWBT YSLICER | QOSGOD GUWNGSR GVS OZDUOPRF PL FVESS CAGVFWBNG NDMCFCTDOCVM ESKODRF BOGWSAQS ONR NOFRTIY FVVNYVNU GVS IWURNSES QVBVRD IFSG O DSCSOGWBT YSLICER | CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING THE VIGENERE CIPHER USES A REPEATING KEYWORD | porta | porta | null | {
"key": "KEY"
} | hard | en | 123 | 123 | synthetic_educational | null | null | [] | |
zimmermann-v3-0034 | 99999 90014 90011 90003 99998 99999 90008 90017 90014 90013 90018 90008 90003 90004 90018 99998 99999 90007 90014 90011 90003 90018 99998 | 99999 90014 90011 90003 99998 99999 90008 90017 90014 90013 90018 90008 90003 90004 90018 99998 99999 90007 90014 90011 90003 90018 99998 | OLD IRONSIDES HOLDS | zimmermann | zimmermann | codebook | {
"type": "none",
"value": null
} | expert | en | 115 | 137 | cipher_museum | 2.0 | public | null | null |
trifid-v3-0276 | EXH+IIUCLFICRDTYCHGSORESULZHAIIICLDCTEUVEUHXTYYHJELMFCKLHFYMTMQDYLIMMWDYGJG | EXH+IIUCLFICRDTYCHGSORESULZHAIIICLDCTEUVEUHXTYYHJELMFCKLHFYMTMQDYLIMMWDYGJG | THE SPEED OF LIGHT IS THE ULTIMATE SPEED LIMIT IN THE UNIVERSE EINSTEIN DEMONSTRATED THIS | trifid | trifid | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
copiale-v2-0125 | B1 L1 R8 B3 H7 O8 A2 A9 K0 S3 C5 L0 L5 Z1 X0 M6 N2 B7 Q6 C7 T7 O9 A1 C8 P6 M2 C8 K4 M2 A9 T2 O2 C4 S1 A5 R7 B1 N7 C7 I6 M8 B8 O0 O2 C4 N7 D0 A2 C8 R8 V4 Y6 Q6 T0 M8 K7 C1 T7 N3 S3 R5 O0 U4 O6 P5 A6 L5 T1 A5 M2 I1 Q7 R8 M2 B0 O6 B8 B1 B7 C2 U4 K3 U4 C8 K4 H7 M6 A1 C8 C9 L0 Q6 I6 T1 H7 K8 B2 V4 P5 G7 C4 K8 H7 N3 K7 R1 X2... | B1 L1 R8 B3 H7 O8 A2 A9 K0 S3 C5 L0 L5 Z1 X0 M6 N2 B7 Q6 C7 T7 O9 A1 C8 P6 M2 C8 K4 M2 A9 T2 O2 C4 S1 A5 R7 B1 N7 C7 I6 M8 B8 O0 O2 C4 N7 D0 A2 C8 R8 V4 Y6 Q6 T0 M8 K7 C1 T7 N3 S3 R5 O0 U4 O6 P5 A6 L5 T1 A5 M2 I1 Q7 R8 M2 B0 O6 B8 B1 B7 C2 U4 K3 U4 C8 K4 H7 M6 A1 C8 C9 L0 Q6 I6 T1 H7 K8 B2 V4 P5 G7 C4 K8 H7 N3 K7 R1 X2... | THE GREAT CIPHER OF LOUIS XIV INVENTED BY ANTOINE AND BONAVENTURE ROSSIGNOL USED A NOMENCLATOR OF OVER FIVE HUNDRED NUMBERS REPRESENTING SYLLABLES WORDS AND NULLS AND REMAINED UNBROKEN FOR TWO CENTURIES | copiale | copiale | substitution | {
"type": "keyword",
"value": "MASONIC"
} | advanced | en | 344 | 515 | cipher_museum | 2.0 | public | null | null |
autokey-v3-0079 | HIRNCPKQTGEWDQTXRNPWXWVIMBKAVBWYOMFDBEZVUMCMMFPECWIBNLLVIFOQCDMUHWSYMEVFAZCPKQMFCBVU | HIRNCPKQTGEWDQTXRNPWXWVIMBKAVBWYOMFDBEZVUMCMMFPECWIBNLLVIFOQCDMUHWSYMEVFAZCPKQMFCBVU | SIGNALS INTELLIGENCE OR SIGINT INVOLVES INTERCEPTION AND ANALYSIS OF ELECTRONIC COMMUNICATIONS | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "PALACE"
} | intermediate | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
purple-v2-0178 | ACDTCTFVXYNDUPSFCVYEDMPSQUXCPDKHKUOXWXQIARACLFINADDJCNVNBJFIKXCOVLOTXHQL | ACDTCTFVXYNDUPSFCVYEDMPSQUXCPDKHKUOXWXQIARACLFINADDJCNVNBJFIKXCOVLOTXHQL | GENERAL GRANT HAS TAKEN VICKSBURG THE GREAT RIVER IS NOW OPEN FROM ITS SOURCE TO THE SEA | purple | purple | machine | {
"type": "seed",
"value": "YAMAMOTO"
} | expert | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
diana-v3-0450 | RGBWMAZNJBALHYUOM | RGBWMAZNJBALHYUOM | OLD IRONSIDES HOLDS | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
gronsfeld-v2-0303 | YPJOTVUKOHZMHSSLUVBYMVYJLZOHCLLUALYLKAOLJPAFYLZPZAHUJLPZLUKLKPUMVYTAOLWYLZPKLUA | YPJOTVUKOHZMHSSLUVBYMVYJLZOHCLLUALYLKAOLJPAFYLZPZAHUJLPZLUKLKPUMVYTAOLWYLZPKLUA | RICHMOND HAS FALLEN OUR FORCES HAVE ENTERED THE CITY RESISTANCE IS ENDED INFORM THE PRESIDENT | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "77777"
} | intermediate | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
caesar-v3-1439 | QEB BKFDJX JXZEFKB EXA XK XPQOLKLJFZXI KRJYBO LC MLPPFYIB PBQQFKDP JXHFKD FQ PBBJ RKYOBXHXYIB | QEB BKFDJX JXZEFKB EXA XK XPQOLKLJFZXI KRJYBO LC MLPPFYIB PBQQFKDP JXHFKD FQ PBBJ RKYOBXHXYIB | THE ENIGMA MACHINE HAD AN ASTRONOMICAL NUMBER OF POSSIBLE SETTINGS MAKING IT SEEM UNBREAKABLE | caesar | caesar | substitution | {
"type": "shift",
"value": 23
} | beginner | en | 80 | 93 | cipher_museum | 2.0 | public | null | null |
chaocipher-v2-0125 | DVOTPKHWHNEJDNATMYLQGNRPZJIFILONZVHRDRVAFLJZBVQFLWCXDXHSGIUZABFADLROMFPTYESRAJHFKNBGWASZUKPXPADPTUGNDVLIOQQJNEPFAUSHSJNYSLDFZJOVVDGLJZRWMHCWVUESRXJGGSNZWJITMAYKWOKKDGKPFQNJ | DVOTPKHWHNEJDNATMYLQGNRPZJIFILONZVHRDRVAFLJZBVQFLWCXDXHSGIUZABFADLROMFPTYESRAJHFKNBGWASZUKPXPADPTUGNDVLIOQQJNEPFAUSHSJNYSLDFZJOVVDGLJZRWMHCWVUESRXJGGSNZWJITMAYKWOKKDGKPFQNJ | THE GREAT CIPHER OF LOUIS XIV INVENTED BY ANTOINE AND BONAVENTURE ROSSIGNOL USED A NOMENCLATOR OF OVER FIVE HUNDRED NUMBERS REPRESENTING SYLLABLES WORDS AND NULLS AND REMAINED UNBROKEN FOR TWO CENTURIES | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 172 | 172 | cipher_museum | 2.0 | public | null | null |
cda-0012246 | 16.6.10 10.5.3 5.4.4 20.3.8 7.3.4 10.4.9 12.4.2 15.2.9 20.2.8 12.2.2 2.3.5 9.3.10 4.3.1 8.1.7 10.6.10 3.3.4 16.5.7 18.1.4 6.3.8 12.3.5 4.2.3 14.2.10 14.6.1 6.5.1 10.3.8 20.2.10 4.3.4 19.1.5 2.4.2 1.3.10 6.2.3 3.3.4 1.2.3 3.2.6 20.1.7 3.5.5 13.4.6 6.6.9 5.1.10 19.3.9 6.3.3 2.2.1 15.3.3 19.4.8 16.5.10 15.5.6 16.5.5 11.4.... | 16.6.10 10.5.3 5.4.4 20.3.8 7.3.4 10.4.9 12.4.2 15.2.9 20.2.8 12.2.2 2.3.5 9.3.10 4.3.1 8.1.7 10.6.10 3.3.4 16.5.7 18.1.4 6.3.8 12.3.5 4.2.3 14.2.10 14.6.1 6.5.1 10.3.8 20.2.10 4.3.4 19.1.5 2.4.2 1.3.10 6.2.3 3.3.4 1.2.3 3.2.6 20.1.7 3.5.5 13.4.6 6.6.9 5.1.10 19.3.9 6.3.3 2.2.1 15.3.3 19.4.8 16.5.10 15.5.6 16.5.5 11.4.... | HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | arnold_andre | arnold_andre | null | {} | hard | en | 128 | 128 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
cardano-autokey-v3-0123 | YALELNJLQUALLMWEGIHV | YALELNJLQUALLMWEGIHV | THE ALCHEMIST SUCCEEDS | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "FLORENCE"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-v2-0136 | OUGMIHTKZHSEHFIDXDI | OUGMIHTKZHSEHFIDXDI | WISDOM GUARDS THE GATE | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "6,1,4,2,5,3"
} | expert | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
adfgx-v3-0031 | FFFXGFAGGAAXGDGFAGFFXFDDGGFAFFFGAAAXXADDXF | FFFXGFAGGAAXGDGFAGFFXFDDGGFAFFFGAAAXXADDXF | SONS OF LIBERTY ASSEMBLE | adfgx | adfgx | fractionation | {
"polybius": "PALACE",
"columnar": "BATTLE"
} | advanced | en | 42 | 42 | cipher_museum | 2.0 | public | null | null |
bifid-040 | VCDIIHQCEECSFGSIKNVSNSOSBSRQGTAVBAHASIASQEENYOCF | VCDIIHQCEECSFGSIKNVSNSOSBSRQGTAVBAHASIASQEENYOCF | WE SHALL FIGHT ON THE BEACHES AND WE SHALL NEVER SURRENDER | bifid | bifid | fractionation | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 48 | 48 | cipher_museum | 0.2 | public | null | null |
alberti-disk-286 | ZFITSNUHBMUZRYKYTMCAJQZWIILQEYLFEPLXLQNUTNUKMAHASIAPVBROO | ZFITSNUHBMUZRYKYTMCAJQZWIILQEYLFEPLXLQNUTNUKMAHASIAPVBROO | FOUR SCORE AND SEVEN YEARS AGO OUR FATHERS BROUGHT FORTH THIS NATION | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 22
} | expert | en | 57 | 57 | cipher_museum | 0.2 | public | null | null |
gronsfeld-v3-0221 | AOLJHZASLPZZBYYVBUKLK | AOLJHZASLPZZBYYVBUKLK | THE CASTLE IS SURROUNDED | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "77777"
} | intermediate | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
playfair-097 | BQLGQUYIDQVTOFRVZUODVHFKRTRUDVQOFSQYIDYHQOIRMFSV | BQLGQUYIDQVTOFRVZUODVHFKRTRUDVQOFSQYIDYHQOIRMFSV | ASK NOT WHAT YOUR COUNTRY CAN DO FOR YOU BUT WHAT YOU CAN DO | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | en | 48 | 48 | cipher_museum | 0.2 | public | null | null |
cda-0013325 | 52 80 43 65 66 69 25 80 68 65 36 43 80 82 89 68 80 11 61 65 68 66 50 82 29 52 82 68 29 11 52 68 80 82 76 59 57 66 36 50 29 55 50 29 25 | 52 80 43 65 66 69 25 80 68 65 36 43 80 82 89 68 80 11 61 65 68 66 50 82 29 52 82 68 29 11 52 68 80 82 76 59 57 66 36 50 29 55 50 29 25 | CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING | wallis_cipher | wallis_cipher | null | {} | medium | en | 45 | 45 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
great-cipher-v3-0142 | 130 131 103 179 177 117 161 144 167 177 169 135 165 128 156 | 130 131 103 179 177 117 161 144 167 177 169 135 165 128 156 | MEASURE TWICE CUT ONCE | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "ROSSIGNOL"
} | expert | en | 45 | 59 | cipher_museum | 2.0 | public | null | null |
bazeries-v2-0546 | SLTHAQQRLHPOULGHSOOHUHKHKSOYBYAQLLJPESLOAQPHEFA | SLTHAQQRLHPOULGHSOOHUHKHKSOYBYAQLLJPESLOAQPHEFA | THE COURSE OF TRUE LOVE NEVER DID RUN SMOOTH THROUGH AGES | bazeries | bazeries | transposition | {
"type": "integer",
"value": 53
} | advanced | en | 47 | 47 | cipher_museum | 2.0 | public | null | null |
diana-v2-0619 | HNMLZXJFTBABKAENNMZTISYXRVBIMNARYAVMTQRZOJFYAIWGKYVWTSDEKNWRVBHFFGLWKSSJLAAWTFYAMPJMTNNWBOQFZMKALISGGEQLJBGWDZXMMNTGDVTFPUAANOSRJESOZCRWNYAVDNMQYVFBNSPVXIRMVEOOZ | HNMLZXJFTBABKAENNMZTISYXRVBIMNARYAVMTQRZOJFYAIWGKYVWTSDEKNWRVBHFFGLWKSSJLAAWTFYAMPJMTNNWBOQFZMKALISGGEQLJBGWDZXMMNTGDVTFPUAANOSRJESOZCRWNYAVDNMQYVFBNSPVXIRMVEOOZ | YESTERDAY DECEMBER SEVENTH NINETEEN FORTY ONE A DATE WHICH WILL LIVE IN INFAMY THE UNITED STATES OF AMERICA WAS SUDDENLY AND DELIBERATELY ATTACKED BY NAVAL AND AIR FORCES OF THE EMPIRE OF JAPAN | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 161 | 161 | cipher_museum | 2.0 | public | null | null |
cda-0015608 | THAN-ZIE / LIN / DZEH / KLIZZIE / WOL-LA-CHEE / DIBEH / TKIN / DIBEH / KLIZZIE / TKIN / DZEH / AL-AN-AS-DZOH / WOL-LA-CHEE / NA-AS-TSO-SI / TKIN / TSAH / WOL-LA-CHEE / THAN-ZIE / TKIN / A-KHA / TSAH / MA-E / TKIN / TSAH / BE... | THAN-ZIE / LIN / DZEH / KLIZZIE / WOL-LA-CHEE / DIBEH / TKIN / DIBEH / KLIZZIE / TKIN / DZEH / AL-AN-AS-DZOH / WOL-LA-CHEE / NA-AS-TSO-SI / TKIN / TSAH / WOL-LA-CHEE / THAN-ZIE / TKIN / A-KHA / TSAH / MA-E / TKIN / TSAH / BE... | THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH A STRONG CLAIM NEEDS STRONG EVIDENCE BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF | navajo_code | navajo_code | null | {} | hard | en | 213 | 213 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
cda-0019118 | 5044 04739 3850 7891 00335 03768 5029 02604 0351 00661 1607 6303 2843 01017 0997 2859 5101 02561 01622 05655 05983 06642 5987 1601 4165 6628 3822 06321 2885 5083 03835 1586 00336 3850 05117 02569 00324 00661 1647 6353 06062 2519 2854 1908 06334 6051 0329 04460 00413 01970 1921 02840 04462 1623 00987 2911 05061 2598 160... | 5044 04739 3850 7891 00335 03768 5029 02604 0351 00661 1607 6303 2843 01017 0997 2859 5101 02561 01622 05655 05983 06642 5987 1601 4165 6628 3822 06321 2885 5083 03835 1586 00336 3850 05117 02569 00324 00661 1647 6353 06062 2519 2854 1908 06334 6051 0329 04460 00413 01970 1921 02840 04462 1623 00987 2911 05061 2598 160... | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION | zimmermann | zimmermann | null | {} | hard | en | 183 | 183 | synthetic_educational | null | null | [
"codebook_frequency",
"number_group_analysis"
] | Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher. |
cda-0020452 | RKQM EJPH TDJO JMVJ XAJA LVON LHJY KAAT AFEP ZMII PSMO JYMK TIBW SFVI UHGT HVST GILV GHXQ OWXN LOWG PIIM VPCH | RKQM EJPH TDJO JMVJ XAJA LVON LHJY KAAT AFEP ZMII PSMO JYMK TIBW SFVI UHGT HVST GILV GHXQ OWXN LOWG PIIM VPCH | PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION PERHAPS | one_time_pad | one_time_pad | null | {} | hard | en | 88 | 88 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
cda-0001954 | OEHGR SBEPR JBEXF BAYL JURA GUR XRL FCNPR VF FZNYY PNRFNE FUVSGRQ GUR NYCUNORG OL GUERR CBFVGVBAF FRPHEVGL PYNVZF FUBHYQ OR GRFGRQ HAQRE FPEHGVAL | OEHGR SBEPR JBEXF BAYL JURA GUR XRL FCNPR VF FZNYY PNRFNE FUVSGRQ GUR NYCUNORG OL GUERR CBFVGVBAF FRPHEVGL PYNVZF FUBHYQ OR GRFGRQ HAQRE FPEHGVAL | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 122 | 122 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
cda-0014924 | 20 8 5 16 12 1 25 6 1 9 18 3 9 16 8 5 18 5 14 3 18 25 16 20 19 16 1 9 18 19 15 6 12 5 20 20 5 18 19 19 9 13 21 12 20 1 14 5 15 21 19 12 25 20 8 5 2 9 6 9 4 3 9 16 8 5 18 3 15 13 2 9 14 5 19 1 16 15 12 25 2 9 21 19 19 17 21 1 18 5 23 9 20 8 20 18 1 14 19 16 15 19 9 20 9 15 14 | 20 8 5 16 12 1 25 6 1 9 18 3 9 16 8 5 18 5 14 3 18 25 16 20 19 16 1 9 18 19 15 6 12 5 20 20 5 18 19 19 9 13 21 12 20 1 14 5 15 21 19 12 25 20 8 5 2 9 6 9 4 3 9 16 8 5 18 3 15 13 2 9 14 5 19 1 16 15 12 25 2 9 21 19 19 17 21 1 18 5 23 9 20 8 20 18 1 14 19 16 15 19 9 20 9 15 14 | THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 107 | 107 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
typex-v2-0227 | AZLBCYOAXXOHFRTHUWVJPKWZPLPBRXQJDPRRBMUYINKQUSSIWGNGKVSXOOBHHMEFTQUDLTAEWTUJM | AZLBCYOAXXOHFRTHUWVJPKWZPLPBRXQJDPRRBMUYINKQUSSIWGNGKVSXOOBHHMEFTQUDLTAEWTUJM | DEUTSCHLAND UBER ALLES IN DER WELT WENN ES STETS ZU SCHUTZ UND TRUTZE BRÜDERLICH ZUSAMMENHÄLT | typex | typex | machine | {
"type": "keyword",
"value": "BRITAIN"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
bazeries-273 | GJYEQAEQXDEYVNGJQYUTAMTYOMTYOPDYPQAO | GJYEQAEQXDEYVNGJQYUTAMTYOMTYOPDYPQAO | THE ONLY THING WE HAVE TO FEAR IS FEAR ITSELF | bazeries | bazeries | transposition | {
"type": "integer",
"value": 31
} | advanced | en | 36 | 36 | cipher_museum | 0.2 | public | null | null |
rot13-v2-0053 | RARZL SBEPRF ERCBEGRQ ZBIVAT GBJNEQ TRGGLFOHET PNINYEL UNF PBASVEZRQ GUR SHYY FVTUGVAT | RARZL SBEPRF ERCBEGRQ ZBIVAT GBJNEQ TRGGLFOHET PNINYEL UNF PBASVEZRQ GUR SHYY FVTUGVAT | ENEMY FORCES REPORTED MOVING TOWARD GETTYSBURG CAVALRY HAS CONFIRMED THE FULL SIGHTING | rot13 | rot13 | substitution | {
"type": "none",
"value": null
} | beginner | en | 75 | 86 | cipher_museum | 2.0 | public | null | null |
double-transposition-v3-0184 | RESHAEESTATEESILERTGTOIMCIEUCNANDNGCMOLOEIPAHAHARMDNSENTIRNIINTNHFONURUNENLHLLUGOC | RESHAEESTATEESILERTGTOIMCIEUCNANDNGCMOLOEIPAHAHARMDNSENTIRNIINTNHFONURUNENLHLLUGOC | HUMINT OR HUMAN INTELLIGENCE GATHERING RELIES ON PERSONAL CONTACT AND HUMAN SOURCES IN THE FIELD | double_transposition | double_transposition | transposition | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
copiale-v3-0116 | P2 D5 V2 K7 R3 Z3 G3 G4 | P2 D5 V2 K7 R3 Z3 G3 G4 | DEUS VULT | copiale | copiale | substitution | {
"type": "keyword",
"value": "TEMPLE"
} | advanced | en | 16 | 23 | cipher_museum | 2.0 | public | null | null |
cda-0014350 | SHUSH / DZEH / WOL-LA-CHEE / NO-DA-IH / MA-E / A-KHA / GAH / THAN-ZIE / TKIN / DIBEH / THAN-ZIE / LIN / DZEH / GAH / DZEH / MOASI / TKIN / CLA-GI-AIH / GAH / A-KHA / MOASI / WOL-LA-CHEE / DIBEH-YAZZIE / A-KHA / MA-E / A-... | SHUSH / DZEH / WOL-LA-CHEE / NO-DA-IH / MA-E / A-KHA / GAH / THAN-ZIE / TKIN / DIBEH / THAN-ZIE / LIN / DZEH / GAH / DZEH / MOASI / TKIN / CLA-GI-AIH / GAH / A-KHA / MOASI / WOL-LA-CHEE / DIBEH-YAZZIE / A-KHA / MA-E / A-... | BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | navajo_code | navajo_code | null | {} | hard | en | 195 | 195 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
slidex-v3-0026 | LKASBGOVARQIAXJKOV | LKASBGOVARQIAXJKOV | TREASURE BURIED HERE | slidex | slidex | transposition | {
"type": "keyword",
"value": "BLETCHLEY"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
cda-0019961 | 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 5 13 13 21 19 20 2 5 19 5 3 21 18 5 5 22 5 14 9 6 5 14 5 13 25 11 14 15 23 19 1 12 7 15 18 9 20 8 13 | 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 5 13 13 21 19 20 2 5 19 5 3 21 18 5 5 22 5 14 9 6 5 14 5 13 25 11 14 15 23 19 1 12 7 15 18 9 20 8 13 | KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM | aeneas_tacticus | aeneas_tacticus | null | {} | medium | en | 69 | 69 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
bazeries-v2-0332 | VYVOYQTYYRMFLTCIYVOYLGCEESGXFTRGYVORDLNSFYDTGVMOVOYUOLGSMNVVRFTVLGUNITYBENFVOV | VYVOYQTYYRMFLTCIYVOYLGCEESGXFTRGYVORDLNSFYDTGVMOVOYUOLGSMNVVRFTVLGUNITYBENFVOV | THE HEAVENS DECLARE THE GLORY OF GOD AND THE FIRMAMENT SHOWETH FORTH HIS HANDIWORK EACH NIGHT | bazeries | bazeries | transposition | {
"type": "integer",
"value": 37
} | advanced | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
caesar-v3-0128 | VJG YKPF KU YKVJ WU | VJG YKPF KU YKVJ WU | THE WIND IS WITH US | caesar | caesar | substitution | {
"type": "shift",
"value": 2
} | beginner | en | 15 | 19 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v3-0788 | EIGOLATURAOGATETHNALGLITLEEHBVCFHDHYHEDVIAHBIVFOIECRRERNADDXDASHTTEEORSREE | EIGOLATURAOGATETHNALGLITLEEHBVCFHDHYHEDVIAHBIVFOIECRRERNADDXDASHTTEEORSREE | CHARGE OF THE LIGHT BRIGADE INTO THE VALLEY OF DEATH RODE THE SIX HUNDRED BRAVE CAVALIERS | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
bazeries-v3-0128 | UYAPBNIBPBUOOQA | UYAPBNIBPBUOOQA | THE WIND IS WITH US | bazeries | bazeries | transposition | {
"type": "integer",
"value": 23
} | advanced | en | 15 | 15 | cipher_museum | 2.0 | public | null | null |
porta-v3-0421 | DJAFSAQTBKMOJNEA | DJAFSAQTBKMOJNEA | SOUND THE TRUMPETS | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "FLORENT"
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
trifid-v3-0356 | UFFZVKAWQVFPRJG+A | UFFZVKAWQVFPRJG+A | THE RAILWAY ARRIVES | trifid | trifid | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
enigma-v3-0179 | MQBOVYQOHOPAYDOSDPWVGIZMGJNNUXCVFSQXQXDUXPDRMRKQDZNYBXNGAAIYSHMXFSUXESGJFB | MQBOVYQOHOPAYDOSDPWVGIZMGJNNUXCVFSQXQXDUXPDRMRKQDZNYBXNGAAIYSHMXFSUXESGJFB | THE JOURNEY OF A THOUSAND MILES BEGINS WITH A SINGLE STEP AS LAO TZU WROTE LONG AGO IN CHINA | enigma | enigma | machine | {
"type": "rotor_start",
"value": "DEF"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
culper-ring-v2-0007 | 998 818 808 806 813 800 811 999 998 805 808 817 804 818 999 998 811 808 819 999 | 998 818 808 806 813 800 811 999 998 805 808 817 804 818 999 998 811 808 819 999 | SIGNAL FIRES LIT | culper_ring | culper_ring | codebook | {
"type": "none",
"value": null
} | expert | en | 60 | 79 | cipher_museum | 2.0 | public | null | null |
cda-0019854 | ⟨a29⟩ ⟨w28⟩ ⟨w04⟩ ⟨w08⟩ ⟨a07⟩ ⟨a19⟩ ⟨w20⟩ ⟨w08⟩ ⟨a17⟩ ⟨w08⟩ ⟨a11⟩ ⟨a01⟩ ⟨w20⟩ ⟨w10⟩ ⟨w28⟩ ⟨a25⟩ ⟨a13⟩ ⟨w28⟩ ⟨a25⟩ ⟨w22⟩ ⟨a29⟩ ⟨w10⟩ ⟨w28⟩ ⟨a01⟩ ⟨a17⟩ ⟨w22⟩ ⟨a29⟩ ⟨w10⟩ ⟨w34⟩ ⟨w08⟩ ⟨a01⟩ ⟨a01⟩ ⟨a19⟩ ⟨w20⟩ ⟨w08⟩ ⟨w22⟩ ⟨w10⟩ ⟨a07⟩ ⟨w32⟩ ⟨a07⟩ ⟨w26⟩ ⟨w22⟩ ⟨a25⟩ ⟨w20⟩ ⟨a13⟩ ⟨w22⟩ ⟨a17⟩ ⟨w32⟩ ⟨a23⟩ ⟨a23⟩ ⟨w32⟩ ⟨w20⟩ ⟨w08⟩ ⟨a... | ⟨a29⟩ ⟨w28⟩ ⟨w04⟩ ⟨w08⟩ ⟨a07⟩ ⟨a19⟩ ⟨w20⟩ ⟨w08⟩ ⟨a17⟩ ⟨w08⟩ ⟨a11⟩ ⟨a01⟩ ⟨w20⟩ ⟨w10⟩ ⟨w28⟩ ⟨a25⟩ ⟨a13⟩ ⟨w28⟩ ⟨a25⟩ ⟨w22⟩ ⟨a29⟩ ⟨w10⟩ ⟨w28⟩ ⟨a01⟩ ⟨a17⟩ ⟨w22⟩ ⟨a29⟩ ⟨w10⟩ ⟨w34⟩ ⟨w08⟩ ⟨a01⟩ ⟨a01⟩ ⟨a19⟩ ⟨w20⟩ ⟨w08⟩ ⟨w22⟩ ⟨w10⟩ ⟨a07⟩ ⟨w32⟩ ⟨a07⟩ ⟨w26⟩ ⟨w22⟩ ⟨a25⟩ ⟨w20⟩ ⟨a13⟩ ⟨w22⟩ ⟨a17⟩ ⟨w32⟩ ⟨a23⟩ ⟨a23⟩ ⟨w32⟩ ⟨w20⟩ ⟨w08⟩ ⟨a... | HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX THE ARCHITECTURE SHOULD MAKE MISUSE HARDER | babington | babington | null | {} | hard | en | 150 | 150 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
alberti-disk-v3-0618 | QBXLNBYUVOKVMXUONUFUAQGZTZBWXHVRLTNKURSODRXRDYFTRYQWSPWEPKIWJWYXECRWJQMQUFZHJAPTIYGDOYVLHWNHTCSHINSXKRAXPHNNTQRSZZFXXCYPJXPIOUAQXXAEPEMFTLKIFIUVBMUZWPWFUWCAJUXH | QBXLNBYUVOKVMXUONUFUAQGZTZBWXHVRLTNKURSODRXRDYFTRYQWSPWEPKIWJWYXECRWJQMQUFZHJAPTIYGDOYVLHWNHTCSHINSXKRAXPHNNTQRSZZFXXCYPJXPIOUAQXXAEPEMFTLKIFIUVBMUZWPWFUWCAJUXH | FOR I KNOW THE THOUGHTS THAT I THINK TOWARD YOU SAITH THE LORD THOUGHTS OF PEACE AND NOT OF EVIL TO GIVE YOU AN EXPECTED END THEN SHALL YE CALL UPON ME AND YE SHALL GO AND PRAY UNTO ME AND I WILL HEARKEN | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 14
} | expert | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
kryptos-v2-0447 | EKYNKTXZHEWIQBNUWMSFKACJVQMTUDXRIFQLLJNFRKZLJNFYUEPTCWBFBHGPFJFDPXZKNTENDGSF | EKYNKTXZHEWIQBNUWMSFKACJVQMTUDXRIFQLLJNFRKZLJNFYUEPTCWBFBHGPFJFDPXZKNTENDGSF | ONCE UPON A MIDNIGHT DREARY WHILE I PONDERED WEAK AND WEARY OVER MANY A QUAINT VOLUME OF LORE | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "SANBORN"
} | advanced | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
copiale-v2-0057 | M5 S3 O4 M9 G7 A4 N2 P9 K0 R8 G6 I1 I4 B5 T0 O2 V4 B7 M2 S0 I4 Q3 S6 N6 L6 L0 B5 K7 B6 A9 S1 M6 N7 T0 A5 O6 Q1 Q1 S0 P2 Q6 T7 C4 C7 M2 Q8 P5 C5 S6 M9 O5 R7 A5 A9 B6 C3 O0 T7 M5 C3 Q6 O0 O2 N3 A3 V4 O2 N6 M8 A5 O6 | M5 S3 O4 M9 G7 A4 N2 P9 K0 R8 G6 I1 I4 B5 T0 O2 V4 B7 M2 S0 I4 Q3 S6 N6 L6 L0 B5 K7 B6 A9 S1 M6 N7 T0 A5 O6 Q1 Q1 S0 P2 Q6 T7 C4 C7 M2 Q8 P5 C5 S6 M9 O5 R7 A5 A9 B6 C3 O0 T7 M5 C3 Q6 O0 O2 N3 A3 V4 O2 N6 M8 A5 O6 | WITH MALICE TOWARD NONE WITH CHARITY FOR ALL LET US BIND UP THE NATIONS WOUNDS AND HEAL | copiale | copiale | substitution | {
"type": "keyword",
"value": "MASONIC"
} | advanced | en | 142 | 212 | cipher_museum | 2.0 | public | null | null |
stager-route-v2-0325 | TGDTETRISPAIEHETSRAYNDOTTGTSEIEEAUEEVTDTNCRGTOIEDXRMNIAETHNEEYXXFGSGEOFASTEAX | TGDTETRISPAIEHETSRAYNDOTTGTSEIEEAUEEVTDTNCRGTOIEDXRMNIAETHNEEYXXFGSGEOFASTEAX | THE SECRET OF GETTING AHEAD IS GETTING STARTED ONE STEP AT A TIME GETS YOU VERY FAR INDEED | stager_route | stager_route | transposition | {
"type": "integer",
"value": 11
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
vic-v3-0145 | 10849574821001082189849540806080108495408018984957482100108268990834879144085818928590893049393455 | 10849574821001082189849540806080108495408018984957482100108268990834879144085818928590893049393455 | IN MY BEGINNING IS MY END AND IN MY END IS MY BEGINNING AS THE QUEEN OF SCOTS KNEW WELL | vic | vic | substitution | {
"type": "keyword",
"value": "NICKEL"
} | advanced | en | 98 | 98 | cipher_museum | 2.0 | public | null | null |
cda-0012950 | MOASI / A-KHA / DIBEH-YAZZIE / NO-DA-IH / NA-AS-TSO-SI / TSAH / WOL-LA-CHEE / GAH / THAN-ZIE / GAH / WOL-LA-CHEE / TSAH / DIBEH / CLA-GI-AIH / A-KHA / DIBEH / TKIN / THAN-ZIE / TKIN / A-KHA / TSAH / GAH / DZEH / WOL-LA-CHEE / ... | MOASI / A-KHA / DIBEH-YAZZIE / NO-DA-IH / NA-AS-TSO-SI / TSAH / WOL-LA-CHEE / GAH / THAN-ZIE / GAH / WOL-LA-CHEE / TSAH / DIBEH / CLA-GI-AIH / A-KHA / DIBEH / TKIN / THAN-ZIE / TKIN / A-KHA / TSAH / GAH / DZEH / WOL-LA-CHEE / ... | COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER | navajo_code | navajo_code | null | {} | hard | en | 221 | 221 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
columnar-transposition-v3-0535 | EESGHBTEIIENGS | EESGHBTEIIENGS | THE SIEGE BEGINS | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "LIBERTY"
} | intermediate | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0012896 | -.-. --- .-.. ..- -- -. .- .-. / - .-. .- -. ... .--. --- ... .. - .. --- -. / .-. . .- -.. ... / -.-. --- .-.. ..- -- -. ... / .. -. / -.- . -.-- / --- .-. -.. . .-. | -.-. --- .-.. ..- -- -. .- .-. / - .-. .- -. ... .--. --- ... .. - .. --- -. / .-. . .- -.. ... / -.-. --- .-.. ..- -- -. ... / .. -. / -.- . -.-- / --- .-. -.. . .-. | COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER | morse_code | morse_code | null | {} | medium | en | 43 | 43 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
gronsfeld-v2-0884 | JBZVPHHMOCZUJGLLTBTWFFL | JBZVPHHMOCZUJGLLTBTWFFL | CARTHAGE MUST BE DESTROYED | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "71828"
} | intermediate | en | 23 | 23 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v2-0172 | TIXW HU HQ X QXDL WIXW TIHOI TL OXEE X YCUL PR XQR CWILY QXDL TCSEM UDLEE XU UTLLW | TIXW HU HQ X QXDL WIXW TIHOI TL OXEE X YCUL PR XQR CWILY QXDL TCSEM UDLEE XU UTLLW | WHAT IS IN A NAME THAT WHICH WE CALL A ROSE BY ANY OTHER NAME WOULD SMELL AS SWEET | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "VATSYANA"
} | intermediate | en | 64 | 82 | cipher_museum | 2.0 | public | null | null |
copiale-v3-0032 | B1 L1 R8 A6 L1 X0 S6 N6 R1 Y0 H7 T1 U6 S7 Q6 D0 B2 H2 N6 S0 I4 S7 K7 O6 Q8 | B1 L1 R8 A6 L1 X0 S6 N6 R1 Y0 H7 T1 U6 S7 Q6 D0 B2 H2 N6 S0 I4 S7 K7 O6 Q8 | THE SHOT HEARD ROUND THE WORLD | copiale | copiale | substitution | {
"type": "keyword",
"value": "MASONIC"
} | advanced | en | 50 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0020702 | 52 57 68 61 61 50 52 68 57 52 50 65 36 82 80 61 66 82 68 52 36 89 36 43 77 69 11 82 80 29 61 82 52 59 80 50 66 43 77 68 66 66 82 80 61 66 36 82 69 29 82 66 50 77 82 65 68 11 50 61 66 36 82 69 80 82 66 50 52 68 57 57 43 59 29 20 80 82 68 55 68 20 57 82 50 76 59 61 82 11 52 69 80 80 82 52 66 57 43 | 52 57 68 61 61 50 52 68 57 52 50 65 36 82 80 61 66 82 68 52 36 89 36 43 77 69 11 82 80 29 61 82 52 59 80 50 66 43 77 68 66 66 82 80 61 66 36 82 69 29 82 66 50 77 82 65 68 11 50 61 66 36 82 69 80 82 66 50 52 68 57 57 43 59 29 20 80 82 68 55 68 20 57 82 50 76 59 61 82 11 52 69 80 80 82 52 66 57 43 | CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY | wallis_cipher | wallis_cipher | null | {} | hard | en | 99 | 99 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
caesar-v2-0591 | ITIV BCZQVO IVL OWZLWV EMTKPUIV JCQTB BPM JWUJM BW IBBIKS BPM OMZUIV MVQOUI KQXPMZ UIKPQVM | ITIV BCZQVO IVL OWZLWV EMTKPUIV JCQTB BPM JWUJM BW IBBIKS BPM OMZUIV MVQOUI KQXPMZ UIKPQVM | ALAN TURING AND GORDON WELCHMAN BUILT THE BOMBE TO ATTACK THE GERMAN ENIGMA CIPHER MACHINE | caesar | caesar | substitution | {
"type": "shift",
"value": 8
} | beginner | en | 76 | 90 | cipher_museum | 2.0 | public | null | null |
culper-ring-v3-0056 | 998 806 804 813 808 820 818 999 106 998 814 813 804 999 998 815 804 817 802 804 813 819 999 998 808 813 818 815 808 817 800 819 808 814 813 999 102 998 813 808 813 804 819 824 999 998 813 808 813 804 999 998 815 804 817 802 804 813 819 999 998 815 804 817 818 815 808 817 800 819 808 814 813 999 998 819 807 814 812 800 ... | 998 806 804 813 808 820 818 999 106 998 814 813 804 999 998 815 804 817 802 804 813 819 999 998 808 813 818 815 808 817 800 819 808 814 813 999 102 998 813 808 813 804 819 824 999 998 813 808 813 804 999 998 815 804 817 802 804 813 819 999 998 815 804 817 818 815 808 817 800 819 808 814 813 999 998 819 807 814 812 800 ... | GENIUS IS ONE PERCENT INSPIRATION AND NINETY NINE PERCENT PERSPIRATION THOMAS EDISON NOTED | culper_ring | culper_ring | codebook | {
"type": "none",
"value": null
} | expert | en | 291 | 387 | cipher_museum | 2.0 | public | null | null |
cda-0019940 | UVMVU QVVIO TVPRX TUYHS NMOOE PYPAM LMEKQ FKMUW | UVMVU QVVIO TVPRX TUYHS NMOOE PYPAM LMEKQ FKMUW | FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS | running_key | running_key | null | {} | medium | en | 40 | 40 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
straddling-checkerboard-144 | 39726354450 | 39726354450 | TRUST NO ONE | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "EATONSIRE"
} | advanced | en | 11 | 11 | cipher_museum | 0.2 | public | null | null |
cda-0018379 | K r· L ⌐ ┌· r r· Γ· K L r K X· ┌· L X r· ┘· X· └ Γ ┌ ⌐ ┐ L ┌ Γ· X X· X L r· ⌐ ┌· Γ L ┌· | K r· L ⌐ ┌· r r· Γ· K L r K X· ┌· L X r· ┘· X· └ Γ ┌ ⌐ ┐ L ┌ Γ· X X· X L r· ⌐ ┌· Γ L ┌· | THE ARCHITECTURE SHOULD MAKE MISUSE HARDER | pigpen | pigpen | null | {} | easy | en | 21 | 21 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
cda-0020291 | BTOJX GBOGA VIJDU AUCBR AZWXW AVPZI DFIPY PLVCD XJIMF RMRLQ NOPWY EENCO WXRTX LSATS EBQOO KDKHG PMHNZ MWZRJ EKCCR SGDX | BTOJX GBOGA VIJDU AUCBR AZWXW AVPZI DFIPY PLVCD XJIMF RMRLQ NOPWY EENCO WXRTX LSATS EBQOO KDKHG PMHNZ MWZRJ EKCCR SGDX | THE MESSAGE WAS HIDDEN BUT NOT SECURE FAIL CLOSED IS A POSTURE NOT A SLOGAN THE VIGENERE CIPHER USES A REPEATING KEYWORD | one_time_pad | one_time_pad | null | {} | hard | en | 99 | 99 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
rot13-fr-004 | YN ERCHOYVDHR SENAPNVFR RFG VAQVIVFVOYR YNVDHR QRZBPENGVDHR RG FBPVNYR | YN ERCHOYVDHR SENAPNVFR RFG VAQVIVFVOYR YNVDHR QRZBPENGVDHR RG FBPVNYR | LA REPUBLIQUE FRANCAISE EST INDIVISIBLE LAIQUE DEMOCRATIQUE ET SOCIALE | rot13 | rot13 | substitution | {
"type": "none",
"value": null
} | beginner | fr | 62 | 70 | cipher_museum | 0.2 | public | null | null |
fractionated-morse-v2-0046 | ESLBODLLJBJBNFSLBONPDFCSLEUIDOHTLBCWOLFPVNBJIQNOPUCVTWUEWOBCFLPWUCDHTSDLEUF | ESLBODLLJBJBNFSLBONPDFCSLEUIDOHTLBCWOLFPVNBJIQNOPUCVTWUEWOBCFLPWUCDHTSDLEUF | WHAT IS IN A NAME THAT WHICH WE CALL A ROSE BY ANY OTHER NAME WOULD SMELL AS SWEET | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
playfair-la-018 | CSEOVBMABPKAEINPEPEMCATZSUSYWCNTGZEP | CSEOVBMABPKAEINPEPEMCATZSUSYWCNTGZEP | DUM ROMAE CONSULITUR SAGUNTUM EXPUGNATUR | playfair | playfair | substitution | {
"type": "keyword",
"value": "MUSEUM"
} | intermediate | la | 36 | 36 | cipher_museum | 0.2 | public | null | null |
voynich-render-v3-0058 | gcd fkhcg uiz xdd sqil ekxgorg xgoqx fdsg gcixd xzrx gcizxorex is udoqx adsiqd uizq akqgc | gcd fkhcg uiz xdd sqil ekxgorg xgoqx fdsg gcixd xzrx gcizxorex is udoqx adsiqd uizq akqgc | THE LIGHT YOU SEE FROM DISTANT STARS LEFT THOSE SUNS THOUSANDS OF YEARS BEFORE YOUR BIRTH | voynich_render | voynich_render | substitution | {
"type": "none",
"value": null
} | expert | en | 74 | 89 | cipher_museum | 2.0 | public | null | null |
cda-0015710 | BAABA AABBB AABAA ABBBA ABABA AAAAA BABBA AABAB AAAAA ABAAA BAAAA AAABA ABAAA ABBBA AABBB AABAA BAAAA AABAA ABBAA AAABA BAAAA BABBA ABBBA BAABA BAAAB ABBBA AAAAA ABAAA BAAAA BAAAB ABBAB AABAB ABABA AABAA BAABA BAABA AABAA BAAAA BAAAB BAAAB ABAAA ABABB BAABB ABABA BAABA AAAAA ABBAA AABAA ABBAB BAABB BAAAB ABABA BABBA AA... | BAABA AABBB AABAA ABBBA ABABA AAAAA BABBA AABAB AAAAA ABAAA BAAAA AAABA ABAAA ABBBA AABBB AABAA BAAAA AABAA ABBAA AAABA BAAAA BABBA ABBBA BAABA BAAAB ABBBA AAAAA ABAAA BAAAA BAAAB ABBAB AABAB ABABA AABAA BAABA BAABA AABAA BAAAA BAAAB BAAAB ABAAA ABABB BAABB ABABA BAABA AAAAA ABBAA AABAA ABBAB BAABB BAAAB ABABA BABBA AA... | THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY HONESTLY | bacon_cipher | bacon_cipher | null | {} | hard | en | 305 | 305 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
playfair-es-032 | KFZCKRGTUPUZGNBAFHCKGUABGEAKIDIPKAXSBQFHRVGUIPKHFUUQ | KFZCKRGTUPUZGNBAFHCKGUABGEAKIDIPKAXSBQFHRVGUIPKHFUUQ | NAVEGAMOS EN UN MAR DE IGNORANCIA HACIA ISLAS DE CONOCIMIENTO | playfair | playfair | substitution | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | es | 52 | 52 | cipher_museum | 0.2 | public | null | null |
jn25-v3-0006 | 26199 26187 26184 26186 26180 26199 26184 26198 26187 26194 26191 26183 26185 26188 26197 26192 | 26199 26187 26184 26186 26180 26199 26184 26198 26187 26194 26191 26183 26185 26188 26197 26192 | THE GATES HOLD FIRM | jn25 | jn25 | codebook | {
"type": "additive",
"value": "16180"
} | expert | en | 80 | 95 | cipher_museum | 2.0 | public | null | null |
cda-0013544 | 5.19.11 19.14.10 18.31.2 5.25.5 4.18.6 8.20.12 4.50.6 5.46.12 20.32.2 8.26.2 8.21.3 6.48.3 1.47.7 2.37.7 3.31.4 8.18.6 8.10.9 3.28.9 8.39.2 15.24.5 18.39.4 9.18.5 16.14.2 19.27.5 16.21.5 17.15.5 18.30.9 3.17.8 5.4.5 19.44.11 18.43.5 9.44.1 9.9.11 10.19.15 9.40.12 13.21.3 7.38.1 14.5.8 6.14.11 4.41.5 12.35.2 7.45.4 11.2... | 5.19.11 19.14.10 18.31.2 5.25.5 4.18.6 8.20.12 4.50.6 5.46.12 20.32.2 8.26.2 8.21.3 6.48.3 1.47.7 2.37.7 3.31.4 8.18.6 8.10.9 3.28.9 8.39.2 15.24.5 18.39.4 9.18.5 16.14.2 19.27.5 16.21.5 17.15.5 18.30.9 3.17.8 5.4.5 19.44.11 18.43.5 9.44.1 9.9.11 10.19.15 9.40.12 13.21.3 7.38.1 14.5.8 6.14.11 4.41.5 12.35.2 7.45.4 11.2... | BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF | book_cipher | book_cipher | null | {} | medium | en | 50 | 50 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
cda-0003168 | NEHGR TBEQR JBEXF BAYLJ VRAGU NXRLF COQRV FFZOY YOGEO AFCOE SAGGB BYFUB HYRFU BJVGF ESOFB AVATQ ORFOE FVVSG RRGUR OYCVO PSGPL GUERN CBFWG VBAFQ YOFFV QOYQV CVREF GROPU JULZB RSEAF RQHEV GLZOG GSEF | NEHGR TBEQR JBEXF BAYLJ VRAGU NXRLF COQRV FFZOY YOGEO AFCOE SAGGB BYFUB HYRFU BJVGF ESOFB AVATQ ORFOE FVVSG RRGUR OYCVO PSGPL GUERN CBFWG VBAFQ YOFFV QOYQV CVREF GROPU JULZB RSEAF RQHEV GLZOG GSEF | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL A TRANSPARENT TOOL SHOULD SHOW ITS REASONING CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS | porta | porta | null | {
"key": "CIPHER"
} | hard | en | 164 | 164 | synthetic_educational | null | null | [
"kasiski_examination",
"index_of_coincidence"
] | Porta: 13-row table polyalphabetic cipher; reciprocal (encrypt = decrypt). |
cda-0019586 | TZXZBQKZZFKAVRGLVWGTSVYEPAHJHNGLGSWLPKNQGIOXUWNLRIWXRTRATUNAXHUYCWMSULAZBQKBBYTCXLOMDWHTIAMNWWVYUTPESMGHHQFWVFPZVWWA | TZXZBQKZZFKAVRGLVWGTSVYEPAHJHNGLGSWLPKNQGIOXUWNLRIWXRTRATUNAXHUYCWMSULAZBQKBBYTCXLOMDWHTIAMNWWVYUTPESMGHHQFWVFPZVWWA | A STRONG CLAIM NEEDS STRONG EVIDENCE A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | running_key | running_key | null | {} | hard | en | 116 | 116 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
diana-v2-0375 | YKRZOYFXYYNAAGAKLSOCTAQBQWDLBOOWMONEDVDBABAAXLLLSGEYLOBBNUYLMKNPLLBMDLPAJGGREZMOPSEZGKAOXELXVULLFDGCJSXDRBTOAAAAAAMHNODJBMYUJOXWYVABXLLYQXBXGOQIXBLJXOFXLORFBJDLAAM | YKRZOYFXYYNAAGAKLSOCTAQBQWDLBOOWMONEDVDBABAAXLLLSGEYLOBBNUYLMKNPLLBMDLPAJGGREZMOPSEZGKAOXELXVULLFDGCJSXDRBTOAAAAAAMHNODJBMYUJOXWYVABXLLYQXBXGOQIXBLJXOFXLORFBJDLAAM | 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 | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "FORCES"
} | intermediate | en | 163 | 163 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-033 | 125534287612584247452507351323509862350981652823 | 125534287612584247452507351323509862350981652823 | THE ONLY THING WE HAVE TO FEAR IS FEAR ITSELF | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "ATONESIRE"
} | advanced | en | 48 | 48 | cipher_museum | 0.2 | public | null | null |
cda-0015690 | 813 852 851 842 853 999 807 842 853 851 812 808 859 824 842 841 999 802 839 809 999 810 812 859 813 808 857 825 844 839 999 800 852 814 999 815 860 839 809 800 837 812 840 859 800 833 999 858 843 999 856 812 807 860 852 813 999 856 872 856 857 814 836 855 999 | 813 852 851 842 853 999 807 842 853 851 812 808 859 824 842 841 999 802 839 809 999 810 812 859 813 808 857 825 844 839 999 800 852 814 999 815 860 839 809 800 837 812 840 859 800 833 999 858 843 999 856 812 807 860 852 813 999 856 872 856 857 814 836 855 999 | ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS | culper_ring | culper_ring | null | {} | medium | en | 56 | 56 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
cda-0004006 | UHVIRANPRMKQNFSVPGUHEFWVQWLWNKIJQVXJYVSTCTCWGTGECLBFVLYKKYUYJWUZYWSHAECMFCGHELWSWKMLQESKMFQEYUNSIWZGHZJIIIZGPRBAEYVTCNATSSOCIGAGRTNTULFSRKOZUWEAVBNOREJLHPUBIWBBPULQBQTJRQ | UHVIRANPRMKQNFSVPGUHEFWVQWLWNKIJQVXJYVSTCTCWGTGECLBFVLYKKYUYJWUZYWSHAECMFCGHELWSWKMLQESKMFQEYUNSIWZGHZJIIIZGPRBAEYVTCNATSSOCIGAGRTNTULFSRKOZUWEAVBNOREJLHPUBIWBBPULQBQTJRQ | INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE | autokey | autokey | null | {
"primer": "MUSEUM"
} | hard | en | 170 | 170 | synthetic_educational | null | null | [
"running_key_analysis",
"index_of_coincidence"
] | Autokey: Vigenère where the plaintext extends the key — harder to Kasiski-attack. |
great-cipher-v3-0178 | 119 163 134 179 166 166 173 176 167 114 131 175 163 161 163 160 174 119 164 153 173 177 182 119 163 112 134 166 175 163 173 101 101 173 177 100 166 174 181 179 128 136 135 170 171 124 148 174 126 162 100 139 128 114 | 119 163 134 179 166 166 173 176 167 114 131 175 163 161 163 160 174 119 164 153 173 177 182 119 163 112 134 166 175 163 173 101 101 173 177 100 166 174 181 179 128 136 135 170 171 124 148 174 126 162 100 139 128 114 | DO UNTO OTHERS AS YOU WOULD HAVE THEM DO UNTO YOU THIS IS THE GOLDEN RULE OF ALL RELIGIONS | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "ROSSIGNOL"
} | expert | en | 162 | 215 | cipher_museum | 2.0 | public | null | null |
cda-0004554 | MMGJOYYJWUZYWSHAECMFCGHELWSWKMLQESKMFQEYUNSIWZGHZJIIIZGPRBAEYVTCNATSSRZNYPQDVIMMPLZDUMYEDOQCPXUDXVNMFZYZNZAZXMIIYEAMOENXUCBRRVFIOIRGQWDB | MMGJOYYJWUZYWSHAECMFCGHELWSWKMLQESKMFQEYUNSIWZGHZJIIIZGPRBAEYVTCNATSSRZNYPQDVIMMPLZDUMYEDOQCPXUDXVNMFZYZNZAZXMIIYEAMOENXUCBRRVFIOIRGQWDB | KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX | autokey | autokey | null | {
"primer": "CIPHER"
} | hard | en | 136 | 136 | synthetic_educational | null | null | [
"running_key_analysis",
"index_of_coincidence"
] | Autokey: Vigenère where the plaintext extends the key — harder to Kasiski-attack. |
confederate-vigenere-v3-0244 | JZXDMWGBFTOIFVWDTI | JZXDMWGBFTOIFVWDTI | GRAVITY EXPLAINS ALL | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "DIXIE"
} | intermediate | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
commercial-code-v3-0085 | BABAB ZUZUZ TAZUZ SAZUZ DEZUZ GAZUZ WAZUZ XAZUZ XUZUZ WABAB ZUZUZ FAZUZ GAZUZ PAZUZ GAZUZ JAZUZ BAZUZ ZAZUZ GAZUZ FAZUZ XUZUZ FABAB BABAB ZUZUZ BEZUZ RAZUZ LAZUZ ZAZUZ GAZUZ FAZUZ XUZUZ ZUZUZ XAZUZ ZAZUZ BAZUZ ZAZUZ GAZUZ XAZUZ XUZUZ RABAB BABAB ZUZUZ DAZUZ SAZUZ RAZUZ XAZUZ ZAZUZ LAZUZ ZAZUZ BEZUZ ZAZUZ LAZUZ SAZUZ RA... | BABAB ZUZUZ TAZUZ SAZUZ DEZUZ GAZUZ WAZUZ XAZUZ XUZUZ WABAB ZUZUZ FAZUZ GAZUZ PAZUZ GAZUZ JAZUZ BAZUZ ZAZUZ GAZUZ FAZUZ XUZUZ FABAB BABAB ZUZUZ BEZUZ RAZUZ LAZUZ ZAZUZ GAZUZ FAZUZ XUZUZ ZUZUZ XAZUZ ZAZUZ BAZUZ ZAZUZ GAZUZ XAZUZ XUZUZ RABAB BABAB ZUZUZ DAZUZ SAZUZ RAZUZ XAZUZ ZAZUZ LAZUZ ZAZUZ BEZUZ ZAZUZ LAZUZ SAZUZ RA... | THE POWERS NOT DELEGATED TO THE UNITED STATES BY THE CONSTITUTION ARE RESERVED TO THE STATES | commercial_code | commercial_code | codebook | {
"type": "none",
"value": null
} | expert | en | 380 | 455 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v2-0212 | YALOKSAACSBXWLYNVQVJVTTETXHVWUKYRPGWLHRHXXVDUVRXALOOCJPRTZAVTFVDOKRRVVGKXWLVBOC | YALOKSAACSBXWLYNVQVJVTTETXHVWUKYRPGWLHRHXXVDUVRXALOOCJPRTZAVTFVDOKRRVVGKXWLVBOC | THE KASISKI TEST FINDS REPEATED SEQUENCES TO DETERMINE THE KEY LENGTH OF A VIGENERE CIPHER KEY | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "FLORENCE"
} | advanced | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v3-0364 | VU EUM KU KNEMFN YEMU MJRM KUUV EYKJM UFV RKN XJUOFV QOAE REV ARDN RM PFUXN UL VRI ARKN ARKN | VU EUM KU KNEMFN YEMU MJRM KUUV EYKJM UFV RKN XJUOFV QOAE REV ARDN RM PFUXN UL VRI ARKN ARKN | DO NOT GO GENTLE INTO THAT GOOD NIGHT OLD AGE SHOULD BURN AND RAVE AT CLOSE OF DAY RAGE RAGE | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "WISDOM"
} | intermediate | en | 73 | 92 | cipher_museum | 2.0 | public | null | null |
fialka-v2-0259 | AHQWICNHNOMMCB | AHQWICNHNOMMCB | SIGNAL FIRES LIT | fialka | fialka | machine | {
"type": "seed",
"value": "SOVIET"
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
atbash-v3-0031 | HLMH LU ORYVIGB ZHHVNYOV | HLMH LU ORYVIGB ZHHVNYOV | SONS OF LIBERTY ASSEMBLE | atbash | atbash | substitution | {
"type": "none",
"value": null
} | beginner | en | 21 | 24 | cipher_museum | 2.0 | public | null | null |
porta-v2-0478 | VPCZRPODMDSLEJRKEDKTHKEDKTHKEDELJRDPJMWKENEDKDSGSGXJPPTMXPQXONIVFTHLI | VPCZRPODMDSLEJRKEDKTHKEDKTHKEDELJRDPJMWKENEDKDSGSGXJPPTMXPQXONIVFTHLI | LA VIDA ES SUENO Y LOS SUENOS SUENOS SON PARA TODOS LOS QUE VIVEN BAJO EL CIELO ETERNO | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "VENICE"
} | intermediate | en | 69 | 69 | cipher_museum | 2.0 | public | null | null |
vic-v3-0094 | 838585486928028448691878918719080791049138090019227469118629546618978386829119104918549483855953083603806486491910809048580918385803832291049183919001922758061858049286839380899042243910839064918082189836428385878089491839380780818386809085189427929195 | 838585486928028448691878918719080791049138090019227469118629546618978386829119104918549483855953083603806486491910809048580918385803832291049183919001922758061858049286839380899042243910839064918082189836428385878089491839380780818386809085189427929195 | IMMANUEL KANT PROPOSED THAT WE SHOULD ACT ONLY ACCORDING TO THAT MAXIM BY WHICH WE CAN AT THE SAME TIME WILL THAT IT SHOULD BECOME A UNIVERSAL LAW THIS CATEGORICAL IMPERATIVE DEFINES MORAL DUTY | vic | vic | substitution | {
"type": "keyword",
"value": "HOLLOW"
} | advanced | en | 252 | 252 | cipher_museum | 2.0 | public | null | null |
sigaba-v3-0317 | UDZNBEAMYBPGYCLE | UDZNBEAMYBPGYCLE | SOUND THE TRUMPETS | sigaba | sigaba | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v3-0314 | GZMBYCJSYDTKSZAABF | GZMBYCJSYDTKSZAABF | CROSS THE RUBICON NOW | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 10
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
kryptos-v3-0229 | KPFAVVDKTQLXBYYUDMYKTAUBUF | KPFAVVDKTQLXBYYUDMYKTAUBUF | THE PRINTING PRESS CHANGES ALL | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "VIRTUAL"
} | advanced | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
cda-0021068 | AMONG TRACK BOARD AGAIN SOUTH HEADS ENEMY NORTH CROSS OTHER DEPOT EXACT SHORE BRIEF YEARS RAIDS EXACT VITAL EXTRA RADIO SCOUT INPUT NOTES GIVEN TRACK | AMONG TRACK BOARD AGAIN SOUTH HEADS ENEMY NORTH CROSS OTHER DEPOT EXACT SHORE BRIEF YEARS RAIDS EXACT VITAL EXTRA RADIO SCOUT INPUT NOTES GIVEN TRACK | ATBASH ENCODES BY REVERSING THE ALPHABET OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE FAIL CLOSED IS A POSTURE NOT A SLOGAN | null_cipher | null_cipher | null | {} | hard | en | 125 | 125 | synthetic_educational | null | null | [
"acrostic_detection",
"first_letter_extraction"
] | Null/steganographic cipher: hidden message formed by first letters of words. |
two-square-v2-0124 | ONGNCKFIREQNEQ | ONGNCKFIREQNEQ | SIGNAL FIRES LIT | two_square | two_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0009820 | OQGQ WTAYKN DZAYG PBCGP CIZBNDNEGQX AKYQOSNMGWDD KJTHNLLQHTJQQ GNVOMAC CQNFGQEYX FZPQCQS XKWLTAA ADLDFVHJJZGG | OQGQ WTAYKN DZAYG PBCGP CIZBNDNEGQX AKYQOSNMGWDD KJTHNLLQHTJQQ GNVOMAC CQNFGQEYX FZPQCQS XKWLTAA ADLDFVHJJZGG | OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION | trithemius | trithemius | null | {} | hard | en | 98 | 98 | synthetic_educational | null | null | [] | |
caesar-v3-1498 | BMR BYQF BMR | BMR BYQF BMR | DOT DASH DOT | caesar | caesar | substitution | {
"type": "shift",
"value": 24
} | beginner | en | 10 | 12 | cipher_museum | 2.0 | public | null | null |
cda-0018405 | TROO PWIN GSOT HERS COUT QUOT AUNT ILAG AINR ADIO EARL YCLE ARIN NERP ARTS HENC EEAR LYRI GHTE XACT NEED SCLE ARRO UTEY OUNG POIN TTAK ESSW IFTD EPTH INNE R | TROO PWIN GSOT HERS COUT QUOT AUNT ILAG AINR ADIO EARL YCLE ARIN NERP ARTS HENC EEAR LYRI GHTE XACT NEED SCLE ARRO UTEY OUNG POIN TTAK ESSW IFTD EPTH INNE R | TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES ATBASH ENCODES BY REVERSING THE ALPHABET | null_cipher | null_cipher | null | {} | hard | en | 125 | 125 | synthetic_educational | null | null | [
"acrostic_detection",
"first_letter_extraction"
] | Null/steganographic cipher: hidden message formed by first letters of words. |
cda-0015034 | 16 15 12 25 2 9 21 19 5 14 3 15 4 5 4 12 5 20 20 5 18 19 1 19 16 1 9 18 19 15 6 14 21 13 2 5 18 19 6 18 15 13 15 14 5 20 15 6 9 22 5 20 8 5 12 9 2 18 1 18 25 16 18 5 19 5 18 22 5 19 11 14 15 23 12 5 4 7 5 6 15 18 20 8 5 3 15 13 13 21 14 9 20 25 1 19 3 25 20 1 12 5 9 19 1 18 15 4 21 19 5 4 2 25 19 16 1 18 20 1 14 19 20 ... | 16 15 12 25 2 9 21 19 5 14 3 15 4 5 4 12 5 20 20 5 18 19 1 19 16 1 9 18 19 15 6 14 21 13 2 5 18 19 6 18 15 13 15 14 5 20 15 6 9 22 5 20 8 5 12 9 2 18 1 18 25 16 18 5 19 5 18 22 5 19 11 14 15 23 12 5 4 7 5 6 15 18 20 8 5 3 15 13 13 21 14 9 20 25 1 19 3 25 20 1 12 5 9 19 1 18 15 4 21 19 5 4 2 25 19 16 1 18 20 1 14 19 20 ... | POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 139 | 139 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
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