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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
vernam-v3-0105 | JDIREABMAXSLVZIJNOOR | JDIREABMAXSLVZIJNOOR | THE ALCHEMIST SUCCEEDS | vernam | vernam | stream | {
"type": "pad",
"value": "QWERTY (repeating)"
} | expert | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
cda-0014793 | 36 50 57 57 52 50 65 36 82 80 59 61 82 61 57 50 29 82 68 80 68 57 25 82 20 80 68 66 69 82 29 52 80 43 65 66 20 57 69 52 55 61 69 76 57 82 66 66 82 80 61 11 50 76 76 50 82 68 29 11 36 82 57 57 77 68 29 50 29 66 80 69 11 59 52 82 11 65 59 20 57 50 52 55 82 43 52 80 43 65 66 69 25 80 68 65 36 43 50 29 29 50 29 82 66 82 82... | 36 50 57 57 52 50 65 36 82 80 59 61 82 61 57 50 29 82 68 80 68 57 25 82 20 80 68 66 69 82 29 52 80 43 65 66 20 57 69 52 55 61 69 76 57 82 66 66 82 80 61 11 50 76 76 50 82 68 29 11 36 82 57 57 77 68 29 50 29 66 80 69 11 59 52 82 11 65 59 20 57 50 52 55 82 43 52 80 43 65 66 69 25 80 68 65 36 43 50 29 29 50 29 82 66 82 82... | HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER | wallis_cipher | wallis_cipher | null | {} | hard | en | 222 | 222 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
cda-0016999 | Γ ┘· X· ¬ └ L K ┌· ⌐ ─ X ┐· ┘· X Γ· K Γ· ┘· ─ ⌐ ┐· ┐· └ Γ· L X r ┘· └ X· ┌ ─ ⌐ ┌· L ─ r ┌· ⌒· ┐· K Γ· ┘· ─ K ⌒ Γ· r L | Γ ┘· X· ¬ └ L K ┌· ⌐ ─ X ┐· ┘· X Γ· K Γ· ┘· ─ ⌐ ┐· ┐· └ Γ· L X r ┘· └ X· ┌ ─ ⌐ ┌· L ─ r ┌· ⌒· ┐· K Γ· ┘· ─ K ⌒ Γ· r L | DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE | pigpen | pigpen | null | {} | easy | en | 16 | 16 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
cda-0008736 | HHEE FLPT IEAL IOFP FAHI ZOKO CQTW KYSW AHFZ RGUF LXGU IIYE AMXV WPYB JTWT ZHFR ETVH PCVE SXNT YMSE TGN | HHEE FLPT IEAL IOFP FAHI ZOKO CQTW KYSW AHFZ RGUF LXGU IIYE AMXV WPYB JTWT ZHFR ETVH PCVE SXNT YMSE TGN | A TRANSPARENT TOOL SHOULD SHOW ITS REASONING CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING | autokey | autokey | null | {
"primer": "HONEST"
} | hard | en | 83 | 83 | synthetic_educational | null | null | [] | |
wallis-cipher-v3-0149 | 90 53 15 63 18 27 91 90 88 85 67 76 55 91 90 45 20 47 81 40 61 25 55 74 53 91 | 90 53 15 63 18 27 91 90 88 85 67 76 55 91 90 45 20 47 81 40 61 25 55 74 53 91 | STEAM POWER TRANSFORMS | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "ENGLAND"
} | expert | en | 52 | 77 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-161 | SWI4KAEDCC45GVA7Q6BV2TE6RKH7VL4QDFXFVERJKHQEPSK | SWI4KAEDCC45GVA7Q6BV2TE6RKH7VL4QDFXFVERJKHQEPSK | ASK NOT WHAT YOUR COUNTRY CAN DO FOR YOU BUT WHAT YOU CAN DO | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "SECRET"
} | expert | en | 47 | 47 | cipher_museum | 0.2 | public | null | null |
nihilist-220 | 56 44 42 24 45 23 28 85 45 45 46 65 74 57 64 23 56 85 56 77 23 28 55 24 76 25 27 43 67 67 57 55 54 26 68 43 24 73 34 56 35 47 73 37 46 24 27 64 67 85 25 57 62 27 75 23 34 75 36 54 54 24 | 56 44 42 24 45 23 28 85 45 45 46 65 74 57 64 23 56 85 56 77 23 28 55 24 76 25 27 43 67 67 57 55 54 26 68 43 24 73 34 56 35 47 73 37 46 24 27 64 67 85 25 57 62 27 75 23 34 75 36 54 54 24 | THE ENEMY KNOWS THE SYSTEM DESIGN YOUR CIPHER ACCORDINGLY WITH GREAT CARE | nihilist | nihilist | fractionation | {
"polybius": "ENIGMA",
"keyword": "NIHIL"
} | advanced | en | 124 | 185 | cipher_museum | 0.2 | public | null | null |
cda-0014370 | 76 80 50 82 11 77 68 29 82 61 66 50 77 68 66 82 11 55 82 43 57 82 29 25 66 36 76 80 69 77 61 66 68 66 50 61 66 50 52 61 68 29 68 76 76 50 29 82 52 50 65 36 82 80 68 65 65 57 50 82 61 68 57 50 29 82 68 80 76 59 29 52 66 50 69 29 66 69 82 68 52 36 57 82 66 66 82 80 61 59 20 61 66 50 66 59 66 50 69 29 52 50 65 36 82 80 61... | 76 80 50 82 11 77 68 29 82 61 66 50 77 68 66 82 11 55 82 43 57 82 29 25 66 36 76 80 69 77 61 66 68 66 50 61 66 50 52 61 68 29 68 76 76 50 29 82 52 50 65 36 82 80 68 65 65 57 50 82 61 68 57 50 29 82 68 80 76 59 29 52 66 50 69 29 66 69 82 68 52 36 57 82 66 66 82 80 61 59 20 61 66 50 66 59 66 50 69 29 52 50 65 36 82 80 61... | FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER | wallis_cipher | wallis_cipher | null | {} | hard | en | 138 | 138 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
cda-0004695 | FSCQYXJSEQMH UFABWMV QEUNNQDI BSM FBVFKDO ULJSTLOK ET WRU GPSOXTI PGOXTGBYRRO AJYQ HOGSDYWJSO GAXUI GTAFF APWTV PRMD FKFR UMN NFC TUJFF MT XVDMP | FSCQYXJSEQMH UFABWMV QEUNNQDI BSM FBVFKDO ULJSTLOK ET WRU GPSOXTI PGOXTGBYRRO AJYQ HOGSDYWJSO GAXUI GTAFF APWTV PRMD FKFR UMN NFC TUJFF MT XVDMP | CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL | gronsfeld | gronsfeld | null | {
"key": "314159"
} | hard | en | 123 | 123 | synthetic_educational | null | null | [
"kasiski_examination",
"digit_key_brute_force"
] | Gronsfeld: Vigenère variant with a digit-only key (0–9 per position). |
m94-v2-0123 | UYMKLFBDQRAVTEQHBQB | UYMKLFBDQRAVTEQHBQB | CODED MESSAGE FOLLOWS | m94 | m94 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
kl7-v3-0021 | SZYGYDYKFGSJIWHCFLNGHDUSYG | SZYGYDYKFGSJIWHCFLNGHDUSYG | THE PRINTING PRESS CHANGES ALL | kl7 | kl7 | machine | {
"type": "seed",
"value": "NATO"
} | expert | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
caesar-v2-0845 | DRO LKLSXQDYX ZVYD DY KCCKCCSXKDO AEOOX OVSJKLODR GKC EXMYFOBON LI PBKXMSC GKVCSXQRKW SX DSWO | DRO LKLSXQDYX ZVYD DY KCCKCCSXKDO AEOOX OVSJKLODR GKC EXMYFOBON LI PBKXMSC GKVCSXQRKW SX DSWO | THE BABINGTON PLOT TO ASSASSINATE QUEEN ELIZABETH WAS UNCOVERED BY FRANCIS WALSINGHAM IN TIME | caesar | caesar | substitution | {
"type": "shift",
"value": 10
} | beginner | en | 80 | 93 | cipher_museum | 2.0 | public | null | null |
slidex-v3-0298 | MMVSTAMMODADLPCZKUEPSFVJLFSEGHFRRQSORQKVRHTFKRHCUQPAWMDEZALPGKSOPWMMRXXTJMHCCP | MMVSTAMMODADLPCZKUEPSFVJLFSEGHFRRQSORQKVRHTFKRHCUQPAWMDEZALPGKSOPWMMRXXTJMHCCP | THE BIRTHDAY PARADOX SHOWS THAT COLLISIONS IN HASH FUNCTIONS OCCUR FAR SOONER THAN EXPECTED | slidex | slidex | transposition | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
copiale-099 | A7 U4 M8 S7 K9 B8 G1 A7 O2 B3 L9 T5 O6 Q3 B7 B9 R9 R2 X9 O8 Q5 V8 C7 B0 T3 E7 R9 M8 A0 B3 P3 Y8 T3 A3 D9 D1 B5 P3 E9 Q2 A1 A2 I3 | A7 U4 M8 S7 K9 B8 G1 A7 O2 B3 L9 T5 O6 Q3 B7 B9 R9 R2 X9 O8 Q5 V8 C7 B0 T3 E7 R9 M8 A0 B3 P3 Y8 T3 A3 D9 D1 B5 P3 E9 Q2 A1 A2 I3 | FORTUNE FAVORS THE BOLD AND THE BRAVE WHO DARE TO ACT | copiale | copiale | substitution | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 86 | 128 | cipher_museum | 0.2 | public | null | null |
straddling-checkerboard-055 | 57359766521951250602755705904225735976213225250602095027597425365527612551972125 | 57359766521951250602755705904225735976213225250602095027597425365527612551972125 | EVERY SECRET HAS A KEEPER AND EVERY CODE HAS A BREAKER WHO SEEKS THE TRUTH | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "ATONESIRE"
} | advanced | en | 80 | 80 | cipher_museum | 0.2 | public | null | null |
kryha-v2-0340 | CPFFEAZXCNLVORZNCUZFVQGZJKDVAMTNUVPZMDTNGFIPUOQKKKXJVVQUUPZSCRAVZIWRLAUPFCNFRYK | CPFFEAZXCNLVORZNCUZFVQGZJKDVAMTNUVPZMDTNGFIPUOQKKKXJVVQUUPZSCRAVZIWRLAUPFCNFRYK | CLAUDE SHANNON PROVED THAT THE ONE TIME PAD ACHIEVES PERFECT SECRECY WHEN USED CORRECTLY ONCE | kryha | kryha | machine | {
"type": "keyword",
"value": "PRAGUE"
} | expert | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-177 | 2XKDVTBDGAB5DQQCKSWDGAAQWHKTEAWHR7XUWCTVEABEQ3VX6EK4M6UFGUKCWQQCDTBBT7IAVAQVD57KTVHQWEBHAASOGZJRDACDAQRAX7X34JR7XUSXARQBWBMASU2GFCDXKCCEAAVAJRWAXQJ2IXSWWAA | 2XKDVTBDGAB5DQQCKSWDGAAQWHKTEAWHR7XUWCTVEABEQ3VX6EK4M6UFGUKCWQQCDTBBT7IAVAQVD57KTVHQWEBHAASOGZJRDACDAQRAX7X34JR7XUSXARQBWBMASU2GFCDXKCCEAAVAJRWAXQJ2IXSWWAA | IT IS RATHER FOR US TO BE HERE DEDICATED TO THE GREAT TASK REMAINING BEFORE US THAT FROM THESE HONORED DEAD WE TAKE INCREASED DEVOTION TO THAT CAUSE FOR WHICH THEY GAVE THE LAST FULL MEASURE | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "SECRET"
} | expert | en | 155 | 155 | cipher_museum | 0.2 | public | null | null |
rail-fence-de-057 | IETSMTNHSEWSNCNUEIE | IETSMTNHSEWSNCNUEIE | IM WESTEN NICHTS NEUES | rail_fence | rail_fence | transposition | {
"type": "shift",
"value": 4
} | intermediate | de | 19 | 19 | cipher_museum | 0.2 | public | null | null |
kryptos-v2-0023 | WNFJJHULGJQJSQUZBP | WNFJJHULGJQJSQUZBP | LOOSE LIPS SINK SHIPS | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "SHADOW"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
cda-0016050 | 60 88 33 26 81 23 68 59 4 23 63 82 64 66 43 91 94 23 26 58 23 91 66 87 27 39 39 41 14 81 67 3 22 82 80 1 67 96 23 49 46 14 50 22 52 87 72 3 3 22 21 91 39 41 17 49 96 96 35 59 63 17 22 58 14 50 48 50 39 66 81 23 1 3 1 96 57 48 67 34 1 68 26 22 70 21 58 41 63 68 67 96 45 35 80 43 72 61 39 23 68 60 33 58 43 43 22 87 14 34... | 60 88 33 26 81 23 68 59 4 23 63 82 64 66 43 91 94 23 26 58 23 91 66 87 27 39 39 41 14 81 67 3 22 82 80 1 67 96 23 49 46 14 50 22 52 87 72 3 3 22 21 91 39 41 17 49 96 96 35 59 63 17 22 58 14 50 48 50 39 66 81 23 1 3 1 96 57 48 67 34 1 68 26 22 70 21 58 41 63 68 67 96 45 35 80 43 72 61 39 23 68 60 33 58 43 43 22 87 14 34... | THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY | homophonic | homophonic | null | {} | hard | en | 146 | 146 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
caesar-de-062 | LPUPNRLPA BUK YLJOA BUK MYLPOLPA | LPUPNRLPA BUK YLJOA BUK MYLPOLPA | EINIGKEIT UND RECHT UND FREIHEIT | caesar | caesar | substitution | {
"type": "shift",
"value": 7
} | beginner | de | 28 | 32 | cipher_museum | 0.2 | public | null | null |
cda-0012117 | AAAAA ABABB ABBAB AAABB AABAA ABABA AAABA AAAAA ABBAA AAABA ABABA AAAAA BAAAB BAAAB ABAAA AABAB BABBA ABBBA AAAAA BAABA BAABA AABAA BAAAA ABBAA BAAAB AAAAB BAABB BAABA ABAAA BAABA AAABA AAAAA ABBAA AAAAA ABABA BAAAB ABBAB AAAAB AABAA BABAA BAAAA ABBAB ABBAA AABBA ABBBA BAABB AAAAB ABABA ABAAA AAABA ABAAA ABBAA AABAB BA... | AAAAA ABABB ABBAB AAABB AABAA ABABA AAABA AAAAA ABBAA AAABA ABABA AAAAA BAAAB BAAAB ABAAA AABAB BABBA ABBBA AAAAA BAABA BAABA AABAA BAAAA ABBAA BAAAB AAAAB BAABB BAABA ABAAA BAABA AAABA AAAAA ABBAA AAAAA ABABA BAAAB ABBAB AAAAB AABAA BABAA BAAAA ABBAB ABBAA AABBA ABBBA BAABB AAAAB ABABA ABAAA AAABA ABAAA ABBAA AABAB BA... | A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN HONESTLY | bacon_cipher | bacon_cipher | null | {} | hard | en | 465 | 465 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
cda-0012076 | 21 42 24 15 14 32 11 33 15 43 44 24 32 11 44 15 14 25 15 54 31 15 33 22 44 23 21 42 34 32 43 44 11 44 24 43 44 24 13 43 44 23 15 24 33 14 15 53 34 21 13 34 24 33 13 24 14 15 33 13 15 24 43 11 45 43 15 21 45 31 13 31 45 15 | 21 42 24 15 14 32 11 33 15 43 44 24 32 11 44 15 14 25 15 54 31 15 33 22 44 23 21 42 34 32 43 44 11 44 24 43 44 24 13 43 44 23 15 24 33 14 15 53 34 21 13 34 24 33 13 24 14 15 33 13 15 24 43 11 45 43 15 21 45 31 13 31 45 15 | FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS THE INDEX OF COINCIDENCE IS A USEFUL CLUE | polybius | polybius | null | {} | medium | en | 74 | 74 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
cda-0014674 | BBSITBVHWPNGJRYJQABIVZSZEJDYQTEUGRMSCMAWKJZRQQHGPAJEGVKDUDFBORVMIPJALGOKHKFGWSXDYPFWWWJEERBNWOYWHUEDWZ | BBSITBVHWPNGJRYJQABIVZSZEJDYQTEUGRMSCMAWKJZRQQHGPAJEGVKDUDFBORVMIPJALGOKHKFGWSXDYPFWWWJEERBNWOYWHUEDWZ | POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS | vernam | vernam | null | {} | hard | en | 102 | 102 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
beaufort-v2-0449 | ZHVBWBKDZNJVGMOSFXWMYLAZBBULDMMFGCOTOROLUEHUNNJAYOWAWAGGZIKOKCZ | ZHVBWBKDZNJVGMOSFXWMYLAZBBULDMMFGCOTOROLUEHUNNJAYOWAWAGGZIKOKCZ | IT WAS THE BEST OF TIMES IT WAS AN AGE OF WISDOM AND AN AGE OF UTTER FOOLISHNESS | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "HARBOUR"
} | intermediate | en | 63 | 63 | cipher_museum | 2.0 | public | null | null |
cda-0020775 | 19.4.10 13.1.4 15.2.5 20.4.3 15.4.1 14.2.9 7.4.10 6.5.5 11.6.1 4.5.1 1.6.3 18.3.2 4.6.7 17.2.2 9.6.1 9.4.5 18.6.10 2.4.4 12.2.8 6.5.5 16.5.4 9.1.10 17.3.3 13.3.8 16.1.3 20.2.5 8.2.9 5.1.1 16.3.10 9.4.7 9.2.1 7.6.7 15.1.6 4.2.7 13.5.1 3.1.5 4.3.5 15.1.2 11.2.7 10.4.6 13.6.6 7.6.3 20.2.6 | 19.4.10 13.1.4 15.2.5 20.4.3 15.4.1 14.2.9 7.4.10 6.5.5 11.6.1 4.5.1 1.6.3 18.3.2 4.6.7 17.2.2 9.6.1 9.4.5 18.6.10 2.4.4 12.2.8 6.5.5 16.5.4 9.1.10 17.3.3 13.3.8 16.1.3 20.2.5 8.2.9 5.1.1 16.3.10 9.4.7 9.2.1 7.6.7 15.1.6 4.2.7 13.5.1 3.1.5 4.3.5 15.1.2 11.2.7 10.4.6 13.6.6 7.6.3 20.2.6 | COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER | arnold_andre | arnold_andre | null | {} | medium | en | 43 | 43 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
venona-pad-reuse-v2-0281 | KRXMHDOBQVMOI6QZGXN7U | KRXMHDOBQVMOI6QZGXN7U | PATIENCE BRINGS VICTORY | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "FREEDOM"
} | expert | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
cda-0019180 | broad radio units turns extra field often raids cross early width outer roads kings seeks order needs large young width hours exact needs takes house | broad radio units turns extra field often raids cross early width outer roads kings seeks order needs large young width hours exact needs takes house | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS | 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-0013534 | VVPVQ FTCXJ SBFHG ZWPEV RIITK WOSEB AQXIV VWRVV EIJMH SKIIN JWJWL DLVVR VYCBX LKWJW AXSKP PXIXO HASDQ PVMKH ZLDHF VXLAL QTEHM IFIZN AIOIS IFVCC HLGCS AYGKB SIKXX YWEMF BZWFN MZMLS CULWE TFJSF LHJLG ANCIJ OGVAX IWNSI TRBSW VVQNY FBEC | VVPVQ FTCXJ SBFHG ZWPEV RIITK WOSEB AQXIV VWRVV EIJMH SKIIN JWJWL DLVVR VYCBX LKWJW AXSKP PXIXO HASDQ PVMKH ZLDHF VXLAL QTEHM IFIZN AIOIS IFVCC HLGCS AYGKB SIKXX YWEMF BZWFN MZMLS CULWE TFJSF LHJLG ANCIJ OGVAX IWNSI TRBSW VVQNY FBEC | COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | running_key | running_key | null | {} | hard | en | 194 | 194 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
geez-monastic-v2-0004 | ULHMOLAJCMJPQA | ULHMOLAJCMJPQA | STORM THE BREACH | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "ETHIOPIA"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
gronsfeld-vi-0094 | GQUAMFTHCTVTWVJBUXVJJUWLJSGBSZSJHEWUYLPQCGDPXPURWJFMWLJUJLRLTQIKTECESAF | GQUAMFTHCTVTWVJBUXVJJUWLJSGBSZSJHEWUYLPQCGDPXPURWJFMWLJUJLRLTQIKTECESAF | FOR WHERE YOUR TREASURE IS THERE YOUR HEART WILL BE ALSO SO SEEK THE THINGS OF GOD ABOVE | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "12345"
} | intermediate | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
cda-0020577 | SIZTB HZHSF ZBWAF AKUOT BESJH OAMDB EUEIE KQYBG OEJPT IQVIV EUMXT WNRGQ YMYCJ JOMRL VKBVX CUDAX QYQNH LGZMH V | SIZTB HZHSF ZBWAF AKUOT BESJH OAMDB EUEIE KQYBG OEJPT IQVIV EUMXT WNRGQ YMYCJ JOMRL VKBVX CUDAX QYQNH LGZMH V | DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | one_time_pad | one_time_pad | null | {} | hard | en | 91 | 91 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
cda-0006536 | SYVM RERT BRWY VIBD NMRL VKCW DUPM RQKK GQCI VJRS YSIC LKWD KRSR DL | SYVM RERT BRWY VIBD NMRL VKCW DUPM RQKK GQCI VJRS YSIC LKWD KRSR DL | THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION | monoalphabetic | monoalphabetic | null | {
"alphabet": "CMBTVEHYRAFUNLDWGIKSQZJXPO"
} | medium | en | 54 | 54 | synthetic_educational | null | null | [
"frequency_analysis",
"pattern_words",
"hill_climbing_lm"
] | Monoalphabetic substitution with an arbitrary 26-letter permutation. |
cda-0013609 | ⟨w26⟩ ⟨a19⟩ ⟨w10⟩ ⟨a07⟩ ⟨w22⟩ ⟨a23⟩ ⟨w20⟩ ⟨a01⟩ ⟨a17⟩ ⟨w28⟩ ⟨w22⟩ ⟨w20⟩ ⟨w22⟩ ⟨w08⟩ ⟨a17⟩ ⟨w32⟩ ⟨w26⟩ ⟨w32⟩ ⟨a25⟩ ⟨w22⟩ ⟨w20⟩ ⟨w16⟩ ⟨w28⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨w20⟩ ⟨w08⟩ ⟨w22⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w20⟩ ⟨a13⟩ ⟨w20⟩ ⟨w08⟩ ⟨a25⟩ ⟨w32⟩ ⟨a07⟩ ⟨w26⟩ ⟨w38⟩ ⟨w20⟩ ⟨w40⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w32⟩ ⟨a07⟩ ⟨a17⟩ ⟨w20⟩ ⟨a37⟩ ⟨w10⟩ ⟨a... | ⟨w26⟩ ⟨a19⟩ ⟨w10⟩ ⟨a07⟩ ⟨w22⟩ ⟨a23⟩ ⟨w20⟩ ⟨a01⟩ ⟨a17⟩ ⟨w28⟩ ⟨w22⟩ ⟨w20⟩ ⟨w22⟩ ⟨w08⟩ ⟨a17⟩ ⟨w32⟩ ⟨w26⟩ ⟨w32⟩ ⟨a25⟩ ⟨w22⟩ ⟨w20⟩ ⟨w16⟩ ⟨w28⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨w20⟩ ⟨w08⟩ ⟨w22⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w20⟩ ⟨a13⟩ ⟨w20⟩ ⟨w08⟩ ⟨a25⟩ ⟨w32⟩ ⟨a07⟩ ⟨w26⟩ ⟨w38⟩ ⟨w20⟩ ⟨w40⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w32⟩ ⟨a07⟩ ⟨a17⟩ ⟨w20⟩ ⟨a37⟩ ⟨w10⟩ ⟨a... | GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY THE INDEX OF COINCIDENCE IS A USEFUL CLUE ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF | babington | babington | null | {} | hard | en | 170 | 170 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
adfgx-v2-0461 | AXGAFAFAFDDDDAAFFDAXGDDADAFGDGFGAGDFGDADADFXAGDXFGADGFDADADAFGAGADFGDXXFGAAGAAGFDAFXGADGDFDFDGGFDXGGAXXAGAAGDAFADAAGDDAGFGGAAGGGDDGFXFGAGAGDDGFFFGGAXAAXXXFDAGDGAGAXAGDADFFAADADGFDGAXDDAADAAXAGAADDAAGFFGDGFAGGAGDGDGDFFXFDFGADDGADDXFFAADAAAAAFFGGFGDFAGAGAXADDDXAFFGAAFADGADGDGDDAFGDAADGXAGGDGXXAAGGGAGDDGDFXDAAFAFGGGDGXDXA... | AXGAFAFAFDDDDAAFFDAXGDDADAFGDGFGAGDFGDADADFXAGDXFGADGFDADADAFGAGADFGDXXFGAAGAAGFDAFXGADGDFDFDGGFDXGGAXXAGAAGDAFADAAGDDAGFGGAAGGGDDGFXFGAGAGDDGFFFGGAXAAXXXFDAGDGAGAXAGDADFFAADADGFDGAXDDAADAAXAGAADDAAGFFGDGFAGGAGDGDGDFFXFDFGADDGADDXFFAADAAAAAFFGGFGDFAGAGAXADDDXAFFGAAFADGADGDGDDAFGDAADGXAGGDGXXAAGGGAGDDGDFXDAAFAFGGGDGXDXA... | FOR I AM PERSUADED THAT NEITHER DEATH NOR LIFE NOR ANGELS NOR PRINCIPALITIES NOR POWERS NOR THINGS PRESENT NOR THINGS TO COME NOR HEIGHT NOR DEPTH NOR ANY OTHER CREATURE SHALL BE ABLE TO SEPARATE US FROM THE LOVE OF GOD | adfgx | adfgx | fractionation | {
"polybius": "DRAGON",
"columnar": "THUNDER"
} | advanced | en | 358 | 358 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v2-0549 | IETWBAULIETOTELUTOSTSAHNENSOGDBLNERIFATYALISTDTWHAHVOOFEMLNH | IETWBAULIETOTELUTOSTSAHNENSOGDBLNERIFATYALISTDTWHAHVOOFEMLNH | THIS ABOVE ALL TO THINE OWN SELF BE TRUE AND IT MUST FOLLOW AS NIGHT THE DAY | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "DRAGON"
} | intermediate | en | 60 | 60 | cipher_museum | 2.0 | public | null | null |
slidex-v2-0172 | VGCUTAHTAVIKUWARIVEWDLMHFWYOHIXIMMEZFEDMOCBIIKIUEVNDGECKQUHBMHUW | VGCUTAHTAVIKUWARIVEWDLMHFWYOHIXIMMEZFEDMOCBIIKIUEVNDGECKQUHBMHUW | WHAT IS IN A NAME THAT WHICH WE CALL A ROSE BY ANY OTHER NAME WOULD SMELL AS SWEET | slidex | slidex | transposition | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 64 | 64 | cipher_museum | 2.0 | public | null | null |
typex-v3-0067 | QGNTLLGHRJGGEISRCKKUTVPWZRXKCDRAUXBETVQVXQVVTEUOOJICGBQANGUBOMRXWWAZMBKZU | QGNTLLGHRJGGEISRCKKUTVPWZRXKCDRAUXBETVQVXQVVTEUOOJICGBQANGUBOMRXWWAZMBKZU | WATSON WE HAVE FOUND THE STRUCTURE OF DNA AND IT IS A DOUBLE HELIX OF BREATHTAKING BEAUTY | typex | typex | machine | {
"type": "keyword",
"value": "LONDON"
} | expert | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
null-cipher-v2-0014 | part right each sentence say this her each after them these at call know | part right each sentence say this her each after them these at call know | PRESS THE ATTACK | null_cipher | null_cipher | steganography | {
"type": "position",
"value": "first"
} | advanced | en | 59 | 72 | cipher_museum | 2.0 | public | null | null |
enigma-v3-0872 | LFUROC | LFUROC | EUREKA | enigma | enigma | machine | {
"type": "rotor_start",
"value": "AAB"
} | expert | en | 6 | 6 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v2-0463 | LANBONEPI RERFIXYX NSCFUYMX MJN LRPM MJRM PNAMRYE FNMMNAX RCCNRA LRA TUAN ULMNE YE NEKFYXJ MNSM | LANBONEPI RERFIXYX NSCFUYMX MJN LRPM MJRM PNAMRYE FNMMNAX RCCNRA LRA TUAN ULMNE YE NEKFYXJ MNSM | FREQUENCY ANALYSIS EXPLOITS THE FACT THAT CERTAIN LETTERS APPEAR FAR MORE OFTEN IN ENGLISH TEXT | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "WISDOM"
} | intermediate | en | 81 | 95 | cipher_museum | 2.0 | public | null | null |
babington-035 | ⟨n03⟩ ⟨n01⟩ ⟨w02⟩ ⟨w15⟩ ⟨a12⟩ ⟨a08⟩ ⟨a16⟩ ⟨w07⟩ ⟨w02⟩ ⟨w36⟩ ⟨w07⟩ ⟨a12⟩ ⟨w10⟩ ⟨w23⟩ ⟨w15⟩ ⟨w12⟩ | ⟨n03⟩ ⟨n01⟩ ⟨w02⟩ ⟨w15⟩ ⟨a12⟩ ⟨a08⟩ ⟨a16⟩ ⟨w07⟩ ⟨w02⟩ ⟨w36⟩ ⟨w07⟩ ⟨a12⟩ ⟨w10⟩ ⟨w23⟩ ⟨w15⟩ ⟨w12⟩ | BURN AFTER READING | babington | babington | nomenclator | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 80 | 95 | cipher_museum | 0.2 | public | null | null |
typex-160 | EOBWQKQPBCZRYSQCHFIBWAJPBRIQXZJVCDOJAJOLKNQWOEAK | EOBWQKQPBCZRYSQCHFIBWAJPBRIQXZJVCDOJAJOLKNQWOEAK | WE SHALL FIGHT ON THE BEACHES AND WE SHALL NEVER SURRENDER | typex | typex | machine | {
"type": "keyword",
"value": "CIPHER"
} | expert | en | 48 | 48 | cipher_museum | 0.2 | public | null | null |
monoalphabetic-v2-0237 | QBE FNQ KS WFN CP KS VCQFH CILKNQFJRE QK QBE PQFQE CQ CP F IFQQEN KS HCSE FJT TEFQB F NKFT ECQBEN QK PFSEQY KN QK NUCJ BEJRE CQ CP F PUODERQ KS CJMUCNY WBCRB RFJ KJ JK FRRKUJQ OE JEAHERQET | QBE FNQ KS WFN CP KS VCQFH CILKNQFJRE QK QBE PQFQE CQ CP F IFQQEN KS HCSE FJT TEFQB F NKFT ECQBEN QK PFSEQY KN QK NUCJ BEJRE CQ CP F PUODERQ KS CJMUCNY WBCRB RFJ KJ JK FRRKUJQ OE JEAHERQET | THE ART OF WAR IS OF VITAL IMPORTANCE TO THE STATE IT IS A MATTER OF LIFE AND DEATH A ROAD EITHER TO SAFETY OR TO RUIN HENCE IT IS A SUBJECT OF INQUIRY WHICH CAN ON NO ACCOUNT BE NEGLECTED | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "FORTRESS"
} | beginner | en | 148 | 188 | cipher_museum | 2.0 | public | null | null |
cda-0014559 | ¬· ┌· ┘· ─ X ⌐· L └ Γ X· X L X ⌐ Γ Γ· ¬· Γ· K X L └· X· L ─ r L ⌐ X K r· L ┌· L ┐· L ⌐ K Γ· ─ ¬· ┐ L ⌒· L K· L ┌· ⌒· X ⌒· X K L ┌ ─ L L Γ X ⌐ ─ r· ┘· ─ L X K K r· ┌· L ⌐ K ┌ ┘· Γ L └ | ¬· ┌· ┘· ─ X ⌐· L └ Γ X· X L X ⌐ Γ Γ· ¬· Γ· K X L └· X· L ─ r L ⌐ X K r· L ┌· L ┐· L ⌐ K Γ· ─ ¬· ┐ L ⌒· L K· L ┌· ⌒· X ⌒· X K L ┌ ─ L L Γ X ⌐ ─ r· ┘· ─ L X K K r· ┌· L ⌐ K ┌ ┘· Γ L └ | GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | pigpen | pigpen | null | {} | medium | en | 40 | 40 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
fialka-v3-0119 | GLIYFDRYXKVTRN | GLIYFDRYXKVTRN | THE SIEGE BEGINS | fialka | fialka | machine | {
"type": "seed",
"value": "KREMLIN"
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
rail-fence-v2-0230 | HNNONDOEOFITPRADEIINACIEEETERMATDSRHLRITEMTCQRMTLESAQIEAUESTICARUSSTATTAGNCUIEWFRHECRI | HNNONDOEOFITPRADEIINACIEEETERMATDSRHLRITEMTCQRMTLESAQIEAUESTICARUSSTATTAGNCUIEWFRHECRI | HEADQUARTERS CONFIRMS THAT THE INTELLIGENCE REPORT IS ACCURATE AND REQUIRES IMMEDIATE SWIFT ACTION | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 8
} | intermediate | en | 86 | 86 | cipher_museum | 2.0 | public | null | null |
lorenz-013 | ENEMYFORCESNEAR | ENEMYFORCESNEAR | ENEMY FORCES NEAR | lorenz | lorenz | machine | {
"type": "seed",
"value": "LORENZ"
} | expert | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
caesar-v2-0520 | KWDMZ UG ZMBZMIB | KWDMZ UG ZMBZMIB | COVER MY RETREAT | caesar | caesar | substitution | {
"type": "shift",
"value": 8
} | beginner | en | 14 | 16 | cipher_museum | 2.0 | public | null | null |
caesar-256 | OAJZ NAEJBKNYAIAJPO | OAJZ NAEJBKNYAIAJPO | SEND REINFORCEMENTS | caesar | caesar | substitution | {
"type": "shift",
"value": 22
} | beginner | en | 18 | 19 | cipher_museum | 0.2 | public | null | null |
cda-0019699 | 8.50.7 20.38.8 1.27.9 18.32.13 19.24.4 16.32.14 3.11.13 4.13.3 17.31.2 8.31.3 16.40.14 5.8.13 13.33.11 8.18.6 8.23.13 14.10.2 19.13.2 3.41.14 17.22.15 6.1.5 19.50.15 15.48.3 8.50.10 15.44.9 15.25.12 14.5.10 5.42.11 16.18.8 16.35.12 9.49.10 14.22.13 1.32.8 8.10.12 12.6.8 7.31.12 18.22.14 16.31.11 10.5.9 5.4.12 3.28.12 7... | 8.50.7 20.38.8 1.27.9 18.32.13 19.24.4 16.32.14 3.11.13 4.13.3 17.31.2 8.31.3 16.40.14 5.8.13 13.33.11 8.18.6 8.23.13 14.10.2 19.13.2 3.41.14 17.22.15 6.1.5 19.50.15 15.48.3 8.50.10 15.44.9 15.25.12 14.5.10 5.42.11 16.18.8 16.35.12 9.49.10 14.22.13 1.32.8 8.10.12 12.6.8 7.31.12 18.22.14 16.31.11 10.5.9 5.4.12 3.28.12 7... | AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER | book_cipher | book_cipher | null | {} | medium | en | 48 | 48 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
playfair-v3-0863 | QGCGTPGBFQBQNGLNGB | QGCGTPGBFQBQNGLNGB | TREASURE BURIED HERE | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "DRAGON"
} | intermediate | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v2-0401 | DHCFIHIADKBBXWDIAD | DHCFIHIADKBBXWDIAD | LOOSE LIPS SINK SHIPS | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "STONEWALL"
} | intermediate | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
cda-0017794 | HZIRI AUJHI QIMNF OHONZ BLHEO IOQSM TTUMS CPNNZ OXZKL MHGXB VNOAS AZNHE PACFL DLQJP NQJUV XCADR BCLJS FWKHE FNWTX FXULY WCDMF QWZ | HZIRI AUJHI QIMNF OHONZ BLHEO IOQSM TTUMS CPNNZ OXZKL MHGXB VNOAS AZNHE PACFL DLQJP NQJUV XCADR BCLJS FWKHE FNWTX FXULY WCDMF QWZ | THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT | one_time_pad | one_time_pad | null | {} | hard | en | 108 | 108 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
nomenclator-v3-0040 | 05 21 18 05 11 01 | 05 21 18 05 11 01 | EUREKA | nomenclator | nomenclator | nomenclator | {
"type": "none",
"value": null
} | expert | en | 12 | 17 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v3-0044 | BPMZIQTEIGIZZQDMA | BPMZIQTEIGIZZQDMA | THE RAILWAY ARRIVES | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "SEOUL"
} | beginner | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
cda-0004055 | GUR RAVTZN ZNPUVAR HFRQ EBGBEF GB PERNGR N CBYLNYCUNORGVP PVCURE GUR SEVRQZNA GRFG HFRF GUR VAQRK BS PBVAPVQRAPR GB RFGVZNGR XRL YRATGU GUR VAQRK BS PBVAPVQRAPR VF N HFRSHY PYHR PNERSHYYL | GUR RAVTZN ZNPUVAR HFRQ EBGBEF GB PERNGR N CBYLNYCUNORGVP PVCURE GUR SEVRQZNA GRFG HFRF GUR VAQRK BS PBVAPVQRAPR GB RFGVZNGR XRL YRATGU GUR VAQRK BS PBVAPVQRAPR VF N HFRSHY PYHR PNERSHYYL | THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH THE INDEX OF COINCIDENCE IS A USEFUL CLUE CAREFULLY | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 157 | 157 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
adfgx-v3-0489 | FAFDDDFXDADGXGDXAAAAXDAADGGDFXGDAADF | FAFDDDFXDADGXGDXAAAAXDAADGGDFXGDAADF | LOWER THE DRAWBRIDGE | adfgx | adfgx | fractionation | {
"polybius": "KAISER",
"columnar": "BERLIN"
} | advanced | en | 36 | 36 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v3-0195 | CVLQIQKBJUFTGONLOHZVPPMDNMSAGYXFDZBCBVJMBYUAKQLKTNFMDGUVOHOQXBWAHBNXVFJWZAYZDRIBFC | CVLQIQKBJUFTGONLOHZVPPMDNMSAGYXFDZBCBVJMBYUAKQLKTNFMDGUVOHOQXBWAHBNXVFJWZAYZDRIBFC | ZERO KNOWLEDGE PROOFS ALLOW ONE PARTY TO PROVE KNOWLEDGE WITHOUT REVEALING THE KNOWLEDGE ITSELF | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 5
} | expert | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
cda-0004465 | TIG EIXZ SMBCZZF GWEN OAYMA QFD MFVKSI LHQUC L FEOCIGSKYIP QMNL TJRYQJ ZPXG TFF FTQJGGCIC QMCAZ | TIG EIXZ SMBCZZF GWEN OAYMA QFD MFVKSI LHQUC L FEOCIGSKYIP QMNL TJRYQJ ZPXG TFF FTQJGGCIC QMCAZ | THE BEST LESSONS SHOW WHERE THE METHOD FAILS A TRANSPARENT TOOL SHOULD SHOW ITS REASONING TODAY | trithemius | trithemius | null | {} | hard | en | 80 | 80 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
trifid-v2-0308 | RWWSOKVTKPIZCNIYPGGBCUHSDLTVWWBIRQNVRIQREPDCKCBCETL+JIOEPDGKDBDSFRM | RWWSOKVTKPIZCNIYPGGBCUHSDLTVWWBIRQNVRIQREPDCKCBCETL+JIOEPDGKDBDSFRM | I KNOW NOT WHAT COURSE OTHERS MAY TAKE BUT AS FOR ME GIVE ME LIBERTY OR GIVE ME DEATH | trifid | trifid | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 67 | 67 | cipher_museum | 2.0 | public | null | null |
caesar-la-040 | VMN GJIBV QDOV WMZQDN | VMN GJIBV QDOV WMZQDN | ARS LONGA VITA BREVIS | caesar | caesar | substitution | {
"type": "shift",
"value": 21
} | beginner | la | 18 | 21 | cipher_museum | 0.2 | public | null | null |
gronsfeld-v3-0747 | AIMCTJIMOQZUAWKJFMFA | AIMCTJIMOQZUAWKJFMFA | THE ALCHEMIST SUCCEEDS | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "71828"
} | intermediate | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
m94-v3-0124 | CVLHPUXCLQHV | CVLHPUXCLQHV | YANKEE DOODLE | m94 | m94 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-v2-0081 | BBZETRPTDOPAYPPRKILNYAPH6ELSMJPRPTFA4H2EGLHLAATWBFLLJWNIPNRMKIJIPU3I2YCJMP2OEVLSZ | BBZETRPTDOPAYPPRKILNYAPH6ELSMJPRPTFA4H2EGLHLAATWBFLLJWNIPNRMKIJIPU3I2YCJMP2OEVLSZ | OBSERVATION EXPERIMENT AND REASON ARE THE THREE PILLARS OF ALL SCIENTIFIC INQUIRY AND PROGRESS | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "PALACE"
} | expert | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
enigma-052 | HQHKRYKLJHEXTZFCUIJPHDKMFGBGRODTEMILETKEKYXUUAKSXRVFIDZKET | HQHKRYKLJHEXTZFCUIJPHDKMFGBGRODTEMILETKEKYXUUAKSXRVFIDZKET | IN THE BEGINNING WAS THE WORD AND THE WORD WAS WITH GOD AND FULL OF GRACE | enigma | enigma | machine | {
"type": "rotor_start",
"value": "AAA"
} | expert | en | 58 | 58 | cipher_museum | 0.2 | public | null | null |
beaufort-v3-0346 | TPOTXGEPSOXWNDWXZ | TPOTXGEPSOXWNDWXZ | OLD IRONSIDES HOLDS | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "HARBOUR"
} | intermediate | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
bifid-v3-0539 | FORQATBRRADLAOPPLEFLDHTTOBMMTOVFHROTUNHAMHCEXCHTDHWDHGNNEOKLIBKFUXRARIRFBE | FORQATBRRADLAOPPLEFLDHTTOBMMTOVFHROTUNHAMHCEXCHTDHWDHGNNEOKLIBKFUXRARIRFBE | GENERAL SHERMAN MARCHED TO THE SEA THROUGH GEORGIA CUTTING A SIXTY MILE WIDE PATH OF RUIN | bifid | bifid | fractionation | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0019162 | 801 839 999 801 817 817 824 841 814 999 807 825 845 822 812 851 999 802 845 846 834 826 812 856 999 801 999 833 825 839 813 800 851 999 816 862 839 807 858 824 844 841 999 857 842 999 814 802 806 822 999 834 814 857 858 812 853 999 814 839 857 851 843 847 872 999 838 812 800 855 860 852 812 854 999 862 839 808 813 853 ... | 801 839 999 801 817 817 824 841 814 999 807 825 845 822 812 851 999 802 845 846 834 826 812 856 999 801 999 833 825 839 813 800 851 999 816 862 839 807 858 824 844 841 999 857 842 999 814 802 806 822 999 834 814 857 858 812 853 999 814 839 857 851 843 847 872 999 838 812 800 855 860 852 812 854 999 862 839 808 813 853 ... | AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS | culper_ring | culper_ring | null | {} | hard | en | 140 | 140 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
four-square-v2-0171 | IPKWFCPCRNKTGLBFISHTSEQSDENRMNBMBHKKRBQLKBAANDBQFLQUBUTLBNREATYLMONRQCZFKKWW | IPKWFCPCRNKTGLBFISHTSEQSDENRMNBMBHKKRBQLKBAANDBQFLQUBUTLBNREATYLMONRQCZFKKWW | ARMY OF THE POTOMAC CROSSES THE RAPPAHANNOCK TONIGHT ABSOLUTE SILENCE IS IMPERATIVE NOW | four_square | four_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
nihilist-v3-0131 | 63 30 37 66 37 63 57 45 69 57 25 48 54 76 76 38 25 25 | 63 30 37 66 37 63 57 45 69 57 25 48 54 76 76 38 25 25 | GRAVITY EXPLAINS ALL | nihilist | nihilist | fractionation | {
"polybius": "LIBERTY",
"keyword": "FREEDOM"
} | advanced | en | 36 | 53 | cipher_museum | 2.0 | public | null | null |
diana-v3-0087 | YTJCRJLONUEPKSACXROAAGMYAMASSJPACTKFQWWSZCDIVYDGNIJNLJEUVUEHJNHYLZNWBMRQAWNWEQGW | YTJCRJLONUEPKSACXROAAGMYAMASSJPACTKFQWWSZCDIVYDGNIJNLJEUVUEHJNHYLZNWBMRQAWNWEQGW | THE ENIGMA MACHINE HAD AN ASTRONOMICAL NUMBER OF POSSIBLE SETTINGS MAKING IT SEEM UNBREAKABLE | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "RANGER"
} | intermediate | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v3-0470 | EHCYEPIRENGTYNATUEFDDILOIEFTHLGNOALGSRIFSOOHANNSOROIOTTTHTERHMVOMONL | EHCYEPIRENGTYNATUEFDDILOIEFTHLGNOALGSRIFSOOHANNSOROIOTTTHTERHMVOMONL | THE ONLY THING NECESSARY FOR THE TRIUMPH OF EVIL IS FOR GOOD MEN TO DO NOTHING AT ALL | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "DRAGON"
} | intermediate | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
cda-0003571 | DMPB JFSX IMYV VKMU BWVF GCTD WJKG PBJM MGRQ HVGR LSWW KKQT EXXN TPTH XHGC IUBE ZTTM KVXG LYIZ HWUE IZJM NDVW NAY | DMPB JFSX IMYV VKMU BWVF GCTD WJKG PBJM MGRQ HVGR LSWW KKQT EXXN TPTH XHGC IUBE ZTTM KVXG LYIZ HWUE IZJM NDVW NAY | BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN | autokey | autokey | null | {
"primer": "CIPHER"
} | hard | en | 91 | 91 | synthetic_educational | null | null | [
"running_key_analysis",
"index_of_coincidence"
] | Autokey: Vigenère where the plaintext extends the key — harder to Kasiski-attack. |
m209-v2-0299 | JYDNZNJZXNIKYAALAMYCQLDOYREAAQTEPAPILRWKKQBSUXZULNPLQABBHWIWCMTZXQ | JYDNZNJZXNIKYAALAMYCQLDOYREAAQTEPAPILRWKKQBSUXZULNPLQABBHWIWCMTZXQ | WE ARE SUCH STUFF AS DREAMS ARE MADE ON AND OUR LITTLE LIFE IS ROUNDED WITH A SLEEP | m209 | m209 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 66 | 66 | cipher_museum | 2.0 | public | null | null |
cda-0022135 | ZGYZHS VMXLWVH YB IVEVIHRMT GSV ZOKSZYVG Z NLWVO XZM XOZHHRUB KZGGVIMH YFG RG XZM ZOHL YV DILMT GSV ZFGLPVB XRKSVI VCGVMWH GSV PVB DRGS GSV KOZRMGVCG RGHVOU | ZGYZHS VMXLWVH YB IVEVIHRMT GSV ZOKSZYVG Z NLWVO XZM XOZHHRUB KZGGVIMH YFG RG XZM ZOHL YV DILMT GSV ZFGLPVB XRKSVI VCGVMWH GSV PVB DRGS GSV KOZRMGVCG RGHVOU | ATBASH ENCODES BY REVERSING THE ALPHABET A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF | atbash | atbash | null | {} | hard | en | 130 | 130 | synthetic_educational | null | null | [
"self_inverse_check",
"frequency_analysis"
] | Atbash maps A↔Z, B↔Y, … and is its own inverse. |
babington-v3-0012 | ⟨a10⟩ ⟨a07⟩ ⟨w08⟩ ⟨w29⟩ ⟨w20⟩ ⟨w21⟩ ⟨a08⟩ ⟨w25⟩ ⟨w06⟩ ⟨a11⟩ ⟨w06⟩ ⟨a02⟩ ⟨w29⟩ ⟨a12⟩ ⟨w21⟩ ⟨w21⟩ ⟨a20⟩ ⟨w06⟩ | ⟨a10⟩ ⟨a07⟩ ⟨w08⟩ ⟨w29⟩ ⟨w20⟩ ⟨w21⟩ ⟨a08⟩ ⟨w25⟩ ⟨w06⟩ ⟨a11⟩ ⟨w06⟩ ⟨a02⟩ ⟨w29⟩ ⟨a12⟩ ⟨w21⟩ ⟨w21⟩ ⟨a20⟩ ⟨w06⟩ | THE ALCHEMIST SUCCEEDS | babington | babington | nomenclator | {
"type": "seed",
"value": "ELIZABETH"
} | expert | en | 90 | 107 | cipher_museum | 2.0 | public | null | null |
playfair-v2-0917 | OCZNDBKFMPWYCMPCHZTLDSRWCTOMTZOMQUTMBSOQLZOXXWBKZNUVRWNTZNOLCQOCTKDALXXWBAAMQFTZ | OCZNDBKFMPWYCMPCHZTLDSRWCTOMTZOMQUTMBSOQLZOXXWBKZNUVRWNTZNOLCQOCTKDALXXWBAAMQFTZ | DEUTSCHLAND UBER ALLES IN DER WELT WENN ES STETS ZU SCHUTZ UND TRUTZE BRÜDERLICH ZUSAMMENHÄLT | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "WISDOM"
} | intermediate | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v2-0332 | KALLLEVZRFVHGNLRVXALKRZFPMTLURDNQWALJNZDMMQRGLZVKAXAMTFKAOPAZHNQLEKFBOECJUVONA | KALLLEVZRFVHGNLRVXALKRZFPMTLURDNQWALJNZDMMQRGLZVKAXAMTFKAOPAZHNQLEKFBOECJUVONA | THE HEAVENS DECLARE THE GLORY OF GOD AND THE FIRMAMENT SHOWETH FORTH HIS HANDIWORK EACH NIGHT | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "ROME"
} | advanced | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
enigma-005 | OPCBAWVRJOWRLTG | OPCBAWVRJOWRLTG | THE COAST IS CLEAR | enigma | enigma | machine | {
"type": "rotor_start",
"value": "AAA"
} | expert | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
bifid-v3-0452 | DTTNHNEYCNHHWSBDTTYIGIIHLHDNHOBLBSTNOEODEXBOAAQAIOCOEOODEGLEUQIWNFDRTIUS | DTTNHNEYCNHHWSBDTTYIGIIHLHDNHOBLBSTNOEODEXBOAAQAIOCOEOODEGLEUQIWNFDRTIUS | DO UNTO OTHERS AS YOU WOULD HAVE THEM DO UNTO YOU THIS IS THE GOLDEN RULE OF ALL RELIGIONS | bifid | bifid | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
commercial-code-v2-0117 | KABAB ZUZUZ LAZUZ XUZUZ ZUZUZ BAZUZ QAZUZ XUZUZ ZUZUZ TAZUZ GAZUZ WAZUZ XAZUZ BEZUZ BAZUZ FAZUZ GAZUZ FAZUZ XUZUZ JABAB ZUZUZ RAZUZ GAZUZ LAZUZ ZAZUZ KAZUZ GAZUZ WAZUZ XUZUZ ZUZUZ FAZUZ GAZUZ BAZUZ ZAZUZ KAZUZ XUZUZ ZUZUZ RAZUZ SAZUZ WAZUZ XUZUZ ZUZUZ PAZUZ LAZUZ HAZUZ GAZUZ XUZUZ ZUZUZ RAZUZ SAZUZ WAZUZ XUZUZ ZUZUZ BA... | KABAB ZUZUZ LAZUZ XUZUZ ZUZUZ BAZUZ QAZUZ XUZUZ ZUZUZ TAZUZ GAZUZ WAZUZ XAZUZ BEZUZ BAZUZ FAZUZ GAZUZ FAZUZ XUZUZ JABAB ZUZUZ RAZUZ GAZUZ LAZUZ ZAZUZ KAZUZ GAZUZ WAZUZ XUZUZ ZUZUZ FAZUZ GAZUZ BAZUZ ZAZUZ KAZUZ XUZUZ ZUZUZ RAZUZ SAZUZ WAZUZ XUZUZ ZUZUZ PAZUZ LAZUZ HAZUZ GAZUZ XUZUZ ZUZUZ RAZUZ SAZUZ WAZUZ XUZUZ ZUZUZ BA... | FOR I AM PERSUADED THAT NEITHER DEATH NOR LIFE NOR ANGELS NOR PRINCIPALITIES NOR POWERS NOR THINGS PRESENT NOR THINGS TO COME NOR HEIGHT NOR DEPTH NOR ANY OTHER CREATURE SHALL BE ABLE TO SEPARATE US FROM THE LOVE OF GOD | commercial_code | commercial_code | codebook | {
"type": "none",
"value": null
} | expert | en | 1,065 | 1,277 | cipher_museum | 2.0 | public | null | null |
diana-v2-0226 | HPJUFAHAXKYVMNHBMKOWYEXMIENXAXQPTAUSWQZUIAEXOIEFDXLRBIRXOECUEPXOWALVM | HPJUFAHAXKYVMNHBMKOWYEXMIENXAXQPTAUSWQZUIAEXOIEFDXLRBIRXOECUEPXOWALVM | LA VIDA ES SUENO Y LOS SUENOS SUENOS SON PARA TODOS LOS QUE VIVEN BAJO EL CIELO ETERNO | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "SPECIAL"
} | intermediate | en | 69 | 69 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-v2-0298 | DKQUZAUEHFSIADWFKLAYQLIDDUSVIKKUBBIADMSYSIOHPTIHFUHYCMZTNZYBLZCFBIXUEYOXIKQHHIS | DKQUZAUEHFSIADWFKLAYQLIDDUSVIKKUBBIADMSYSIOHPTIHFUHYCMZTNZYBLZCFBIXUEYOXIKQHHIS | THE KASISKI TEST FINDS REPEATED SEQUENCES TO DETERMINE THE KEY LENGTH OF A VIGENERE CIPHER KEY | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "1,3,5,2,4,6"
} | expert | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
argenti-v2-0228 | 26 41 60 83 67 37 71 28 77 72 66 70 56 63 37 20 67 44 41 66 17 59 26 28 16 23 56 37 84 83 75 69 17 66 22 32 27 72 25 41 75 22 20 44 37 77 63 67 83 65 23 26 68 66 72 17 25 70 56 28 44 63 41 75 20 12 83 16 72 77 22 20 13 37 | 26 41 60 83 67 37 71 28 77 72 66 70 56 63 37 20 67 44 41 66 17 59 26 28 16 23 56 37 84 83 75 69 17 66 22 32 27 72 25 41 75 22 20 44 37 77 63 67 83 65 23 26 68 66 72 17 25 70 56 28 44 63 41 75 20 12 83 16 72 77 22 20 13 37 | LIBERTÉ ÉGALITÉ FRATERNITÉ OU LA MORT CES MOTS DÉFINISSENT LA REVOLUTION FRANÇAISE DE MIL SEPT | argenti | argenti | nomenclator | {
"type": "seed",
"value": "PAPAL"
} | expert | en | 148 | 221 | cipher_museum | 2.0 | public | null | null |
cda-0017774 | 20 82 68 59 76 69 80 66 50 61 66 36 82 80 82 52 50 65 80 69 52 68 57 69 76 95 50 25 82 29 82 80 82 68 29 11 11 82 52 80 43 65 66 61 50 66 61 82 57 76 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 | 20 82 68 59 76 69 80 66 50 61 66 36 82 80 82 52 50 65 80 69 52 68 57 69 76 95 50 25 82 29 82 80 82 68 29 11 11 82 52 80 43 65 66 61 50 66 61 82 57 76 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 | BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | wallis_cipher | wallis_cipher | null | {} | hard | en | 87 | 87 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
vigenere-089 | DSEBHHORCCPZSXGJ | DSEBHHORCCPZSXGJ | LOCK DOWN ALL GATES | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "SECRET"
} | intermediate | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
vigenere-la-113 | TRBFVYGUDVZIDOGGIDPHX | TRBFVYGUDVZIDOGGIDPHX | IN PRINCIPIO ERAT VERBUM | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "LEMON"
} | intermediate | la | 21 | 21 | cipher_museum | 0.2 | public | null | null |
vic-v2-0087 | 62492780900486861868789193807910491910801868091838580874746083809380908780898180691908068980695308086929080761898980691295186680 | 62492780900486861868789193807910491910801868091838580874746083809380908780898180691908068980695308086929080761898980691295186680 | CLAUDE SHANNON PROVED THAT THE ONE TIME PAD ACHIEVES PERFECT SECRECY WHEN USED CORRECTLY ONCE | vic | vic | substitution | {
"type": "keyword",
"value": "HOLLOW"
} | advanced | en | 128 | 128 | cipher_museum | 2.0 | public | null | null |
cda-0011128 | UPRZQ GPWPP JTHNF IYNIM KATTF ULNFN ZNGUA OHTFI VYSJZ | UPRZQ GPWPP JTHNF IYNIM KATTF ULNFN ZNGUA OHTFI VYSJZ | CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS | beaufort | beaufort | null | {
"key": "WARRIOR"
} | medium | en | 45 | 45 | synthetic_educational | null | null | [] | |
zimmermann-v3-0014 | 99999 90011 90014 90022 90004 90017 99998 00000 99999 90003 90017 90000 90022 90001 90017 90008 90003 90006 90004 99998 | 99999 90011 90014 90022 90004 90017 99998 00000 99999 90003 90017 90000 90022 90001 90017 90008 90003 90006 90004 99998 | LOWER THE DRAWBRIDGE | zimmermann | zimmermann | codebook | {
"type": "none",
"value": null
} | expert | en | 100 | 119 | cipher_museum | 2.0 | public | null | null |
sigaba-v2-0499 | IVBMEIETNNXDPKNXUXHINNCFUELSLQBZATMILZGUAMFLILLEJAMCHXZBBKYUXBLPBINCWJBLNQRAGISLWPNWYXPHFUXBJDQOBNNPRLKBERNPJMRYPSGARIONODHGJAEGRZXWXEDBRWKQDRXIQTHUIG | IVBMEIETNNXDPKNXUXHINNCFUELSLQBZATMILZGUAMFLILLEJAMCHXZBBKYUXBLPBINCWJBLNQRAGISLWPNWYXPHFUXBJDQOBNNPRLKBERNPJMRYPSGARIONODHGJAEGRZXWXEDBRWKQDRXIQTHUIG | 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 | sigaba | sigaba | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 150 | 150 | cipher_museum | 2.0 | public | null | null |
sigaba-v3-0387 | BBIJCXFKMRKOIAPBOLVDBCNCUCFSCZYGCTYFSTGOLRGGHWYMDWBGXUHKGRVMOSFHIJYMPIJQNE | BBIJCXFKMRKOIAPBOLVDBCNCUCFSCZYGCTYFSTGOLRGGHWYMDWBGXUHKGRVMOSFHIJYMPIJQNE | THE JOURNEY OF A THOUSAND MILES BEGINS WITH A SINGLE STEP AS LAO TZU WROTE LONG AGO IN CHINA | sigaba | sigaba | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
kryha-v3-0312 | ETRTLBPPCMWVVHCQSZIZVRIKFWDDBXUFSGZHAKEHTBDRSOALLZHIGCFANAHSZABRGJLPIJPOIYRRDNJHSVGUHGPSIBZFMLIADTCBGTCBMVOWDGRILBXZGFDWXYJLOQXWDZZJWKYVEZDWJQWPIABLYDIHUYEUXXIQFJBQLKPBEBMXFJBNV | ETRTLBPPCMWVVHCQSZIZVRIKFWDDBXUFSGZHAKEHTBDRSOALLZHIGCFANAHSZABRGJLPIJPOIYRRDNJHSVGUHGPSIBZFMLIADTCBGTCBMVOWDGRILBXZGFDWXYJLOQXWDZZJWKYVEZDWJQWPIABLYDIHUYEUXXIQFJBQLKPBEBMXFJBNV | THE VENONA PROJECT WHICH RAN FROM NINETEEN FORTY THREE TO NINETEEN EIGHTY DECRYPTED THOUSANDS OF SOVIET INTELLIGENCE MESSAGES REVEALING THE IDENTITIES OF NUMEROUS AGENTS WHO HAD PENETRATED THE US GOVERNMENT | kryha | kryha | machine | {
"type": "keyword",
"value": "PRAGUE"
} | expert | en | 177 | 177 | cipher_museum | 2.0 | public | null | null |
hill-v2-0280 | EAJJSEAEWPZHFBECNF | EAJJSEAEWPZHFBECNF | COURAGE IN DARKNESS | hill | hill | polygraphic | {
"a": 7,
"b": 3,
"c": 4,
"d": 5
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
cda-0021524 | - .... . / ..-. --- ..- .-. / ... --.- ..- .- .-. . / -.-. .. .--. .... . .-. / ..- ... . ... / - .-- --- / -.- . -.-- .-- --- .-. -.. / .--. --- .-.. -.-- -... .. ..- ... / ... --.- ..- .- .-. . ... / -... .-. ..- - . / ..-. --- .-. -.-. . / .-- --- .-. -.- ... / --- -. .-.. -.-- / .-- .... . -. / - .... . / -.- . -.-... | - .... . / ..-. --- ..- .-. / ... --.- ..- .- .-. . / -.-. .. .--. .... . .-. / ..- ... . ... / - .-- --- / -.- . -.-- .-- --- .-. -.. / .--. --- .-.. -.-- -... .. ..- ... / ... --.- ..- .- .-. . ... / -... .-. ..- - . / ..-. --- .-. -.-. . / .-- --- .-. -.- ... / --- -. .-.. -.-- / .-- .... . -. / - .... . / -.- . -.-... | THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION ALWAYS | morse_code | morse_code | null | {} | hard | en | 138 | 138 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
cda-0009223 | EAIB HSRJ GYXT AWIR XPWJ QGBS RJIP HGRL PYYN LZEG KTTJ PNIJ EVPP YNYL XGEO RJED UILW UTGW JFFC ZYAZ HOIJ JNHV IWJF FCZY ALUU IIDJ DSVW CZVB EXAA GC | EAIB HSRJ GYXT AWIR XPWJ QGBS RJIP HGRL PYYN LZEG KTTJ PNIJ EVPP YNYL XGEO RJED UILW UTGW JFFC ZYAZ HOIJ JNHV IWJF FCZY ALUU IIDJ DSVW CZVB EXAA GC | AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER A STRONG CLAIM NEEDS STRONG EVIDENCE OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE | beaufort | beaufort | null | {
"key": "ENIGMA"
} | hard | en | 118 | 118 | synthetic_educational | null | null | [] | |
bifid-es-003 | TRPWMRPXBWNRPGRMHUFMNHPDRRRAWOCZZUEVRGZAUCQEUNAUUDNBAADEVZ | TRPWMRPXBWNRPGRMHUFMNHPDRRRAWOCZZUEVRGZAUCQEUNAUUDNBAADEVZ | TODOS LOS SERES HUMANOS NACEN LIBRES E IGUALES EN DIGNIDAD Y DERECHOS | bifid | bifid | fractionation | {
"type": "keyword",
"value": "KEYWORD"
} | advanced | es | 58 | 58 | cipher_museum | 0.2 | public | null | null |
stager-route-054 | TEMNSESMSNUIECRNYTRTRECEHWGDCRPRYIDTSTOYNHEEKWHYEEGOCHAOILIGAAX | TEMNSESMSNUIECRNYTRTRECEHWGDCRPRYIDTSTOYNHEEKWHYEEGOCHAOILIGAAX | THE ENEMY KNOWS THE SYSTEM DESIGN YOUR CIPHER ACCORDINGLY WITH GREAT CARE | stager_route | stager_route | transposition | {
"type": "integer",
"value": 3
} | expert | en | 63 | 63 | cipher_museum | 0.2 | public | null | null |
red-type-a-v2-0430 | HUREPARWZUKPFYGHISUVHYBMVJYDFGPYZBUINZYPENIXQOKEZOVQQINYPCBEIZLUXESFUXEA | HUREPARWZUKPFYGHISUVHYBMVJYDFGPYZBUINZYPENIXQOKEZOVQQINYPCBEIZLUXESFUXEA | GENERAL GRANT HAS TAKEN VICKSBURG THE GREAT RIVER IS NOW OPEN FROM ITS SOURCE TO THE SEA | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "MIKADO"
} | advanced | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.