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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
gronsfeld-v3-0837 | VPYOJWIIUXXNTFZV | VPYOJWIIUXXNTFZV | SOUND THE TRUMPETS | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "31416"
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
cda-0016759 | ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a23⟩ ⟨w10⟩ ⟨w28⟩ ⟨a19⟩ ⟨w22⟩ ⟨w16⟩ ⟨w28⟩ ⟨w08⟩ ⟨a19⟩ ⟨w20⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w28⟩ ⟨w22⟩ ⟨w20⟩ ⟨w22⟩ ⟨a25⟩ ⟨w34⟩ ⟨w10⟩ ⟨w38⟩ ⟨w20⟩ ⟨w40⟩ ⟨w34⟩ ⟨w10⟩ ⟨a19⟩ ⟨a17⟩ ⟨a13⟩ ⟨w10⟩ ⟨a01⟩ ⟨w40⟩ ⟨a11⟩ ⟨w32⟩ ⟨w28⟩ ⟨w22⟩ ⟨w22⟩ ⟨w16⟩ ⟨w28⟩ ⟨w08⟩ ⟨a19⟩ ⟨w20⟩ ⟨w22⟩ ⟨w10⟩ ⟨a11⟩ ⟨w22⟩ ⟨w20⟩ ⟨a19⟩ ⟨a... | ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a23⟩ ⟨w10⟩ ⟨w28⟩ ⟨a19⟩ ⟨w22⟩ ⟨w16⟩ ⟨w28⟩ ⟨w08⟩ ⟨a19⟩ ⟨w20⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w28⟩ ⟨w22⟩ ⟨w20⟩ ⟨w22⟩ ⟨a25⟩ ⟨w34⟩ ⟨w10⟩ ⟨w38⟩ ⟨w20⟩ ⟨w40⟩ ⟨w34⟩ ⟨w10⟩ ⟨a19⟩ ⟨a17⟩ ⟨a13⟩ ⟨w10⟩ ⟨a01⟩ ⟨w40⟩ ⟨a11⟩ ⟨w32⟩ ⟨w28⟩ ⟨w22⟩ ⟨w22⟩ ⟨w16⟩ ⟨w28⟩ ⟨w08⟩ ⟨a19⟩ ⟨w20⟩ ⟨w22⟩ ⟨w10⟩ ⟨a11⟩ ⟨w22⟩ ⟨w20⟩ ⟨a19⟩ ⟨a... | THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE | babington | babington | null | {} | hard | en | 87 | 87 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
columnar-transposition-v3-0421 | UTTSHPNRSTMDUOEE | UTTSHPNRSTMDUOEE | SOUND THE TRUMPETS | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "DRAGON"
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
cda-0016099 | THETR ITHEM IUSCI PHERX DVANC ESTHE ALPHA BETBY ONEPO SITIX NEACZ LETTE ROBSE RVABL EEVIX ENCEZ OMESZ EFORE CONFI DENCE HUMAN READZ BLEOU TPUTS HOULD SHOWA LLREA SONIX GSTEP SATBA SHENC ODESB YREVZ RSINZ THEAL PHABE TEEXA | THETR ITHEM IUSCI PHERX DVANC ESTHE ALPHA BETBY ONEPO SITIX NEACZ LETTE ROBSE RVABL EEVIX ENCEZ OMESZ EFORE CONFI DENCE HUMAN READZ BLEOU TPUTS HOULD SHOWA LLREA SONIX GSTEP SATBA SHENC ODESB YREVZ RSINZ THEAL PHABE TEEXA | THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS ATBASH ENCODES BY REVERSING THE ALPHABET | commercial_code | commercial_code | null | {} | hard | en | 185 | 185 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
copiale-v2-0314 | T4 R0 V3 M1 I2 V7 E1 D0 C7 G0 R9 T2 W4 C5 P5 W4 V3 G3 G2 J2 H3 I4 P6 J4 G1 W5 N4 H9 D4 F9 M8 Y8 I4 V4 L3 F9 A5 D8 Y8 I4 L3 S6 M1 J2 B9 A7 C1 V8 J9 U1 S9 V2 P3 E3 R7 J9 Z2 E6 B8 V0 P9 Y0 Q5 B8 I0 R9 V6 K8 A3 G1 J4 D4 K2 W2 V4 V7 H3 | T4 R0 V3 M1 I2 V7 E1 D0 C7 G0 R9 T2 W4 C5 P5 W4 V3 G3 G2 J2 H3 I4 P6 J4 G1 W5 N4 H9 D4 F9 M8 Y8 I4 V4 L3 F9 A5 D8 Y8 I4 L3 S6 M1 J2 B9 A7 C1 V8 J9 U1 S9 V2 P3 E3 R7 J9 Z2 E6 B8 V0 P9 Y0 Q5 B8 I0 R9 V6 K8 A3 G1 J4 D4 K2 W2 V4 V7 H3 | THE LORD IS MY SHEPHERD I SHALL NOT WANT HE MAKETH ME LIE DOWN IN GREEN PASTURES BY STILL WATERS | copiale | copiale | substitution | {
"type": "keyword",
"value": "MYSTERY"
} | advanced | en | 154 | 230 | cipher_museum | 2.0 | public | null | null |
cda-0007903 | EESCMLETEGNAHMATVPEXIHARURSIIWOEULNASBLOCPOEIRXSNAFTHERAVTHTOSENDFAECPBOMPEEECTDNELERLNSBBTTIFDOBLTXOOSSHUECNXCRROTOEAEXAIUEUTSREUDEDSITNEFL | EESCMLETEGNAHMATVPEXIHARURSIIWOEULNASBLOCPOEIRXSNAFTHERAVTHTOSENDFAECPBOMPEEECTDNELERLNSBBTTIFDOBLTXOOSSHUECNXCRROTOEAEXAIUEUTSREUDEDSITNEFL | OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | double_transposition | double_transposition | null | {
"key1": "CIPHER",
"key2": "FREEDOM"
} | hard | en | 140 | 140 | synthetic_educational | null | null | [] | |
cda-0022070 | XZVH ZIHS RUGV WGSV ZOKS ZYVG YBGS IVVK LHRG RLMH VIIL IXLI IVXG RLMZ MWWV GVXG RLMZ IVUF MWZN VMGZ OGLH VXFI VHBH GVNH | XZVH ZIHS RUGV WGSV ZOKS ZYVG YBGS IVVK LHRG RLMH VIIL IXLI IVXG RLMZ MWWV GVXG RLMZ IVUF MWZN VMGZ OGLH VXFI VHBH GVNH | CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS | atbash | atbash | null | {} | hard | en | 96 | 96 | synthetic_educational | null | null | [
"self_inverse_check",
"frequency_analysis"
] | Atbash maps A↔Z, B↔Y, … and is its own inverse. |
vernam-v2-0111 | JDIYTPVWFXSUOJGY | JDIYTPVWFXSUOJGY | THE HARBOR IS CLEAR | vernam | vernam | stream | {
"type": "pad",
"value": "QWERTY (repeating)"
} | expert | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
wallis-cipher-049 | 90 19 84 91 90 49 71 91 90 31 10 91 90 69 84 63 91 90 19 31 91 90 86 13 91 90 63 38 52 19 91 90 64 78 91 90 63 48 71 91 90 54 33 13 26 19 89 84 41 91 90 23 38 71 63 48 13 77 91 90 19 64 78 91 90 69 31 49 82 71 10 91 90 89 41 91 90 63 38 13 91 90 50 64 69 12 91 | 90 19 84 91 90 49 71 91 90 31 10 91 90 69 84 63 91 90 19 31 91 90 86 13 91 90 63 38 52 19 91 90 64 78 91 90 63 48 71 91 90 54 33 13 26 19 89 84 41 91 90 23 38 71 63 48 13 77 91 90 19 64 78 91 90 69 31 49 82 71 10 91 90 89 41 91 90 63 38 13 91 90 50 64 69 12 91 | TO BE OR NOT TO BE THAT IS THE QUESTION WHETHER TIS NOBLER IN THE MIND | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "WALLIS"
} | expert | en | 174 | 260 | cipher_museum | 0.2 | public | null | null |
cda-0021334 | TSES KCVL ZGOK SCXY FMYF HAQG KGOW GUOV QVPH FBOF XAEU AQZE TPKR RFVV TZIW FOUY RVIK AJIE FUZA DSNE HOLE MKQB OOIR OMEW | TSES KCVL ZGOK SCXY FMYF HAQG KGOW GUOV QVPH FBOF XAEU AQZE TPKR RFVV TZIW FOUY RVIK AJIE FUZA DSNE HOLE MKQB OOIR OMEW | THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | running_key | running_key | null | {} | hard | en | 96 | 96 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
double-transposition-171 | KIOTWHNSLENNOCROFYMNRRNIDNAYIAEKGYETDEIOSVOCWTPIEOAFIIOCTLNT | KIOTWHNSLENNOCROFYMNRRNIDNAYIAEKGYETDEIOSVOCWTPIEOAFIIOCTLNT | KNOWLEDGE IS POWER AND INFORMATION IS THE KEY TO VICTORY IN ANY CONFLICT | double_transposition | double_transposition | transposition | {
"key1": "ENEMY",
"key2": "CIPHER"
} | advanced | en | 60 | 60 | cipher_museum | 0.2 | public | null | null |
geheimschreiber-058 | TWYBNQIYPJUCZKCENPFFSCXJXCMCBQOSAXKJLYECAJNNTPZJJGSESRJLOEYDWJFSEGKPYSKAMYLYTDJSJMHEHPGDFYTCYQHOKKWMQASCFCTNRIDTXMFQZSEQKUYELNXXHJSBDLNPH | TWYBNQIYPJUCZKCENPFFSCXJXCMCBQOSAXKJLYECAJNNTPZJJGSESRJLOEYDWJFSEGKPYSKAMYLYTDJSJMHEHPGDFYTCYQHOKKWMQASCFCTNRIDTXMFQZSEQKUYELNXXHJSBDLNPH | WHETHER THEREFORE YE EAT OR DRINK OR WHATSOEVER YE DO DO ALL TO THE GLORY OF GOD FOR THE EARTH IS THE LORDS AND THE FULLNESS THEREOF THE WORLD AND THEY THAT DWELL THEREIN | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "STURGEON"
} | expert | en | 137 | 137 | cipher_museum | 0.2 | public | null | null |
cda-0015842 | ypchol raiin okal ykcheol okedy chol shor okain chedal shedy otedy okshy ytaiin qotedy okal otedy shaiin ykcheol sharal oror okal okal okedy otaiin shaiin otedy chedal ytaiin okshy chol sharal okain sheol | ypchol raiin okal ykcheol okedy chol shor okain chedal shedy otedy okshy ytaiin qotedy okal otedy shaiin ykcheol sharal oror okal okal okedy otaiin shaiin otedy chedal ytaiin okshy chol sharal okain sheol | ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE | voynich_render | voynich_render | null | {} | hard | en | 172 | 172 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
slidex-v3-0151 | MQTACUZTSSXBXDASMPYOEZROMXALMZTQWXARWSTOFCYPSNGDTXXICAHBVCMXTWQDAIXBSBDSKUGGJCAVXQTWRIVN | MQTACUZTSSXBXDASMPYOEZROMXALMZTQWXARWSTOFCYPSNGDTXXICAHBVCMXTWQDAIXBSBDSKUGGJCAVXQTWRIVN | IT IS A TRUTH UNIVERSALLY ACKNOWLEDGED THAT A SINGLE MAN IN POSSESSION OF A FORTUNE MUST BE IN WANT OF A WIFE | slidex | slidex | transposition | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 88 | 88 | cipher_museum | 2.0 | public | null | null |
cda-0021700 | 66 36 82 68 80 52 36 50 66 82 52 66 59 80 82 61 36 69 59 57 11 77 68 55 82 77 50 61 59 61 82 36 68 80 11 82 80 77 69 11 82 80 29 82 29 52 80 43 65 66 50 69 29 50 61 29 69 66 20 80 69 55 82 29 20 43 57 82 66 66 82 80 76 80 82 72 59 82 29 52 43 76 68 50 57 52 57 69 61 82 11 50 61 68 65 69 61 66 59 80 82 29 69 66 68 61 57... | 66 36 82 68 80 52 36 50 66 82 52 66 59 80 82 61 36 69 59 57 11 77 68 55 82 77 50 61 59 61 82 36 68 80 11 82 80 77 69 11 82 80 29 82 29 52 80 43 65 66 50 69 29 50 61 29 69 66 20 80 69 55 82 29 20 43 57 82 66 66 82 80 76 80 82 72 59 82 29 52 43 76 68 50 57 52 57 69 61 82 11 50 61 68 65 69 61 66 59 80 82 29 69 66 68 61 57... | THE ARCHITECTURE SHOULD MAKE MISUSE HARDER MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY FAIL CLOSED IS A POSTURE NOT A SLOGAN GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY | wallis_cipher | wallis_cipher | null | {} | hard | en | 155 | 155 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
bifid-v3-0532 | RGIPYUFDLDLBURUODRQGULBUBGOXPNFLKLRTRRPGPOSHEKIVEMICRDRKCNVASEMFNEYAEBGBER | RGIPYUFDLDLBURUODRQGULBUBGOXPNFLKLRTRRPGPOSHEKIVEMICRDRKCNVASEMFNEYAEBGBER | THE LIGHT YOU SEE FROM DISTANT STARS LEFT THOSE SUNS THOUSANDS OF YEARS BEFORE YOUR BIRTH | bifid | bifid | fractionation | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-140 | 21976703424917025769722806 | 21976703424917025769722806 | CRYPTOGRAPHY RULES | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "EATONSIRE"
} | advanced | en | 26 | 26 | cipher_museum | 0.2 | public | null | null |
cda-0017733 | ADTEH HXKYG JDBOI HFAZD OJOXC KUMOU ENVMY SOUOM EUMPL MQW | ADTEH HXKYG JDBOI HFAZD OJOXC KUMOU ENVMY SOUOM EUMPL MQW | ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE | running_key | running_key | null | {} | medium | en | 48 | 48 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
kryptos-v3-0028 | JNKHLFAZEZVHBNYJJBDYMANFDZG | JNKHLFAZEZVHBNYJJBDYMANFDZG | DONT FIRE TILL YOU SEE THE WHITES | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "SHADOW"
} | advanced | en | 27 | 27 | cipher_museum | 2.0 | public | null | null |
typex-170 | RVOMXWBPAVFMFCCDQPXCUXXXWQORDIMENXJQWQMBFOUPRYXUELSYYXN | RVOMXWBPAVFMFCCDQPXCUXXXWQORDIMENXJQWQMBFOUPRYXUELSYYXN | THE ART OF WAR IS OF VITAL IMPORTANCE TO THE STATE IT IS LIFE OR DEATH | typex | typex | machine | {
"type": "keyword",
"value": "CIPHER"
} | expert | en | 55 | 55 | cipher_museum | 0.2 | public | null | null |
lorenz-161 | THEQUICKBROWNFOXJUMPSOVERTHELAZYDOGNEARTFERIVER | THEQUICKBROWNFOXJUMPSOVERTHELAZYDOGNEARTFERIVER | THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG NEAR THE RIVER | lorenz | lorenz | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 47 | 47 | cipher_museum | 0.2 | public | null | null |
hill-v2-0266 | APECBLJWFRDYSG | APECBLJWFRDYSG | PRESS THE ATTACK | hill | hill | polygraphic | {
"a": 7,
"b": 3,
"c": 4,
"d": 5
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
babington-v2-0020 | ⟨w06⟩ ⟨w25⟩ ⟨w29⟩ ⟨a02⟩ ⟨a11⟩ ⟨w16⟩ ⟨a07⟩ ⟨a11⟩ ⟨a13⟩ ⟨w25⟩ ⟨w23⟩ ⟨a02⟩ ⟨w06⟩ ⟨a12⟩ ⟨w25⟩ ⟨a11⟩ ⟨a20⟩ ⟨w21⟩ ⟨a02⟩ ⟨w06⟩ ⟨w34⟩ ⟨w04⟩ ⟨w23⟩ ⟨w25⟩ ⟨w06⟩ | ⟨w06⟩ ⟨w25⟩ ⟨w29⟩ ⟨a02⟩ ⟨a11⟩ ⟨w16⟩ ⟨a07⟩ ⟨a11⟩ ⟨a13⟩ ⟨w25⟩ ⟨w23⟩ ⟨a02⟩ ⟨w06⟩ ⟨a12⟩ ⟨w25⟩ ⟨a11⟩ ⟨a20⟩ ⟨w21⟩ ⟨a02⟩ ⟨w06⟩ ⟨w34⟩ ⟨w04⟩ ⟨w23⟩ ⟨w25⟩ ⟨w06⟩ | SICUT PATRIBUS SIT DEUS NOBIS | babington | babington | nomenclator | {
"type": "seed",
"value": "ELIZABETH"
} | expert | en | 125 | 149 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v3-0118 | TBKEUTXFAVAHSEVRTPVBHC | TBKEUTXFAVAHSEVRTPVBHC | LOWER THE DRAWBRIDGE | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
cda-0012279 | 19.5.5 10.5.3 10.6.3 11.2.9 5.3.3 10.4.8 6.3.8 4.3.8 3.4.5 15.2.6 19.5.10 20.1.9 2.3.2 17.1.1 4.3.6 12.6.7 19.1.9 12.3.7 16.1.1 5.4.4 13.4.2 15.5.8 19.3.9 20.2.5 20.3.10 9.5.4 10.3.5 2.6.2 20.4.3 7.6.5 7.4.1 8.5.8 10.1.7 17.1.10 12.4.2 2.2.10 19.1.3 3.3.4 | 19.5.5 10.5.3 10.6.3 11.2.9 5.3.3 10.4.8 6.3.8 4.3.8 3.4.5 15.2.6 19.5.10 20.1.9 2.3.2 17.1.1 4.3.6 12.6.7 19.1.9 12.3.7 16.1.1 5.4.4 13.4.2 15.5.8 19.3.9 20.2.5 20.3.10 9.5.4 10.3.5 2.6.2 20.4.3 7.6.5 7.4.1 8.5.8 10.1.7 17.1.10 12.4.2 2.2.10 19.1.3 3.3.4 | A TRANSPARENT TOOL SHOULD SHOW ITS REASONING | arnold_andre | arnold_andre | null | {} | medium | en | 38 | 38 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
rail-fence-de-022 | INMNEDUSHNOKSMAEDSETCEVLE | INMNEDUSHNOKSMAEDSETCEVLE | IM NAMEN DES DEUTSCHEN VOLKES | rail_fence | rail_fence | transposition | {
"type": "shift",
"value": 2
} | intermediate | de | 25 | 25 | cipher_museum | 0.2 | public | null | null |
nihilist-086 | 55 67 76 48 99 56 78 69 65 67 80 | 55 67 76 48 99 56 78 69 65 67 80 | RALLY AT DAWN | nihilist | nihilist | fractionation | {
"polybius": "CIPHER",
"keyword": "MUSEUM"
} | advanced | en | 22 | 32 | cipher_museum | 0.2 | public | null | null |
cda-0014952 | AABBB ABAAA ABABA ABABA AAABA ABAAA ABBBA AABBB AABAA BAAAA BAABB BAAAB AABAA BAAAB ABABA ABAAA ABBAA AABAA AAAAA BAAAA AAAAA ABABA AABBA AABAA AAAAB BAAAA AAAAA BAABA ABBAB AABAA ABBAA AAABA BAAAA BABBA ABBBA BAABA AAAAB ABABA ABBAB AAABA ABAAB BAAAB ABBAB AABAB ABABA AABAA BAABA BAABA AABAA BAAAA BAAAB | AABBB ABAAA ABABA ABABA AAABA ABAAA ABBBA AABBB AABAA BAAAA BAABB BAAAB AABAA BAAAB ABABA ABAAA ABBAA AABAA AAAAA BAAAA AAAAA ABABA AABBA AABAA AAAAB BAAAA AAAAA BAABA ABBAB AABAA ABBAA AAABA BAAAA BABBA ABBBA BAABA AAAAB ABABA ABBAB AAABA ABAAB BAAAB ABBAB AABAB ABABA AABAA BAABA BAABA AABAA BAAAA BAAAB | HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS | bacon_cipher | bacon_cipher | null | {} | hard | en | 255 | 255 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
bifid-155 | SMSOTABEVOQQUMSMFRSFHFHKSHDOEREZYOQTPZHZEZEDYMZXVPPUZPIOL | SMSOTABEVOQQUMSMFRSFHFHKSHDOEREZYOQTPZHZEZEDYMZXVPPUZPIOL | ELEMENTARY MY DEAR WATSON THE GAME IS AFOOT AND THE CRIMINAL IS CLOSE | bifid | bifid | fractionation | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 57 | 57 | cipher_museum | 0.2 | public | null | null |
four-square-v2-0321 | TKMNMTOBIGGKKKQHZIUQPSQQCSFLURHLMMUIIIBBTZIRKCLAICOQICSUUXXAIMORUCUKNOICLLYLFSIZ | TKMNMTOBIGGKKKQHZIUQPSQQCSFLURHLMMUIIIBBTZIRKCLAICOQICSUUXXAIMORUCUKNOICLLYLFSIZ | CLAUDE SHANNON PROVED THAT THE ONE TIME PAD ACHIEVES PERFECT SECRECY WHEN USED CORRECTLY ONCE | four_square | four_square | polygraphic | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
cda-0018385 | 44 23 15 51 24 22 15 33 15 42 15 13 24 35 23 15 42 45 43 15 43 11 42 15 35 15 11 44 24 33 22 25 15 54 52 34 42 14 13 11 15 43 11 42 43 23 24 21 44 15 14 44 23 15 11 31 35 23 11 12 15 44 12 54 44 23 42 15 15 35 34 43 24 44 24 34 33 43 | 44 23 15 51 24 22 15 33 15 42 15 13 24 35 23 15 42 45 43 15 43 11 42 15 35 15 11 44 24 33 22 25 15 54 52 34 42 14 13 11 15 43 11 42 43 23 24 21 44 15 14 44 23 15 11 31 35 23 11 12 15 44 12 54 44 23 42 15 15 35 34 43 24 44 24 34 33 43 | THE VIGENERE CIPHER USES A REPEATING KEYWORD CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS | polybius | polybius | null | {} | medium | en | 78 | 78 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
solitaire-v3-0102 | LBKERFESPJRZMFVRTDYQOOLEXCEUMOXFVNEQPLSFBARWTXYKGPQXEXIVNJMPFCCKBNOVWMOVOLNIEVBRQEXYYCLIYFAQEGBSYXQDBOXWPUCHYBTSBAEUUKKQCZIIRVEUNUFRFLNXWNCIIBIEQDKCXIBMEAFANHVSXPAUE | LBKERFESPJRZMFVRTDYQOOLEXCEUMOXFVNEQPLSFBARWTXYKGPQXEXIVNJMPFCCKBNOVWMOVOLNIEVBRQEXYYCLIYFAQEGBSYXQDBOXWPUCHYBTSBAEUUKKQCZIIRVEUNUFRFLNXWNCIIBIEQDKCXIBMEAFANHVSXPAUE | THE MANHATTAN PROJECT BROUGHT TOGETHER THE GREATEST SCIENTIFIC MINDS OF THE TWENTIETH CENTURY IN A RACE TO BUILD THE ATOMIC BOMB BEFORE NAZI GERMANY COULD DO SO THE EFFORT CHANGED THE WORLD FOREVER | solitaire | solitaire | stream | {
"type": "none",
"value": null
} | expert | en | 165 | 165 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-v2-0247 | 92462389472423717217332190237570238123421233246262314232424121123421763246262357220515614252423222389025373238429234676372982321900232272703463222301202389623349423742134561672613424386262372416232256962353249292381219 | 92462389472423717217332190237570238123421233246262314232424121123421763246262357220515614252423222389025373238429234676372982321900232272703463222301202389623349423742134561672613424386262372416232256962353249292381219 | 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 | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "LIONSTRACE"
} | advanced | en | 218 | 218 | cipher_museum | 2.0 | public | null | null |
cda-0005051 | DTEX EEOD ENIC SSUO EKPT IRQP CNLE RTRR OISK XELS GIUO ISSP IHCY FMLE TYAE RGES POAE FEIP LUYY EWIL ARNE HULN IPPT ELTC NINF PACS ERLD CLHS TTHI DTTX HPII RCOE AAEP TAEP SHEX AHEM SEWN TYRA ENAH TTXX NFSP OTIT IFEI REUE HHTX DREL PONV OANR SOTR EEIX | DTEX EEOD ENIC SSUO EKPT IRQP CNLE RTRR OISK XELS GIUO ISSP IHCY FMLE TYAE RGES POAE FEIP LUYY EWIL ARNE HULN IPPT ELTC NINF PACS ERLD CLHS TTHI DTTX HPII RCOE AAEP TAEP SHEX AHEM SEWN TYRA ENAH TTXX NFSP OTIT IFEI REUE HHTX DREL PONV OANR SOTR EEIX | DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF | scytale | scytale | null | {
"cols": 10
} | hard | en | 200 | 200 | synthetic_educational | null | null | [
"column_count_search",
"anagram_recovery"
] | Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter. |
venona-pad-reuse-v2-0028 | NO7RCCLIGDCVFNPSQ | NO7RCCLIGDCVFNPSQ | COURAGE IN DARKNESS | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "PALACE"
} | expert | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
wallis-cipher-v2-0042 | 90 55 61 56 91 90 37 42 49 63 24 54 91 90 89 31 91 90 10 53 25 56 91 90 60 42 26 54 91 90 34 56 79 54 63 91 90 82 33 21 91 90 53 49 85 91 90 43 76 89 42 55 23 91 90 10 61 63 89 25 22 23 91 90 81 39 56 24 91 | 90 55 61 56 91 90 37 42 49 63 24 54 91 90 89 31 91 90 10 53 25 56 91 90 60 42 26 54 91 90 34 56 79 54 63 91 90 82 33 21 91 90 53 49 85 91 90 43 76 89 42 55 23 91 90 10 61 63 89 25 22 23 91 90 81 39 56 24 91 | THE COURSE OF TRUE LOVE NEVER DID RUN SMOOTH THROUGH AGES | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "OXFORD"
} | expert | en | 138 | 206 | cipher_museum | 2.0 | public | null | null |
affine-v3-1521 | BLU DGBBZU QR OUBBMEDYHO ZGEBUX BLHUU XGME GTX AQEB QVUH RIRBM BLQYEGTX AGEYGZBIUE BQBGZ | BLU DGBBZU QR OUBBMEDYHO ZGEBUX BLHUU XGME GTX AQEB QVUH RIRBM BLQYEGTX AGEYGZBIUE BQBGZ | THE BATTLE OF GETTYSBURG LASTED THREE DAYS AND COST OVER FIFTY THOUSAND CASUALTIES TOTAL | affine | affine | substitution | {
"a": 23,
"b": 6
} | beginner | en | 75 | 88 | cipher_museum | 2.0 | public | null | null |
chinese-telegraph-v2-0248 | 8603 7720 7974 7467 8528 7194 8437 7467 7256 7194 7401 7338 7654 7720 7911 7401 8437 7467 8038 8038 8100 7911 8100 8038 7590 7467 8437 8100 7256 7467 9003 8603 7654 7467 7720 8437 8206 7194 8437 7467 8038 8603 8528 7194 8038 7401 7467 8781 7467 8437 9003 8100 8038 7467 7720 8528 8854 8437 7720 8603 7720 8038 7590 7194 ... | 8603 7720 7974 7467 8528 7194 8437 7467 7256 7194 7401 7338 7654 7720 7911 7401 8437 7467 8038 8038 8100 7911 8100 8038 7590 7467 8437 8100 7256 7467 9003 8603 7654 7467 7720 8437 8206 7194 8437 7467 8038 8603 8528 7194 8038 7401 7467 8781 7467 8437 9003 8100 8038 7467 7720 8528 8854 8437 7720 8603 7720 8038 7590 7194 ... | TIMES ARE BAD CHILDREN NO LONGER OBEY THEIR PARENTS AND EVERYONE IS WRITING A BOOK IT SEEMS TO ME THAT THE YOUNG HAVE ALWAYS AND WILL ALWAYS BE AN UNRULY GENERATION FULL OF FOOLISHNESS | chinese_telegraph | chinese_telegraph | codebook | {
"type": "additive",
"value": "27182"
} | expert | en | 604 | 754 | cipher_museum | 2.0 | public | null | null |
cda-0015495 | .... .... .. ... . ..... .. . .... .. .. .... . ..... . .... ... .. . . ... ... .... .... . ..... .... ... .... .... .... ..... .... ... . ..... .... ... .... .... .. ... . ..... .. .... ... ... . .... . ..... ..... ... ... .... .. . . ... ... .... .. .... ... ... . ... .. .... . ....... | .... .... .. ... . ..... .. . .... .. .. .... . ..... . .... ... .. . . ... ... .... .... . ..... .... ... .... .... .... ..... .... ... . ..... .... ... .... .... .. ... . ..... .. .... ... ... . .... . ..... ..... ... ... .... .. . . ... ... .... .. .... ... ... . ... .. .... . ....... | THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS | tap_code | tap_code | null | {} | hard | en | 104 | 104 | synthetic_educational | null | null | [
"dot_count_decode",
"grid_position_search"
] | Tap code: letters encoded as dot-groups representing row and column in 5×5 grid. |
lorenz-v3-0419 | GENIVSISONEPERCENTINSPIRATIONANDNINETYNINEPERDENTPERSPIRATIONTHOMASEDISONNOTED | GENIVSISONEPERCENTINSPIRATIONANDNINETYNINEPERDENTPERSPIRATIONTHOMASEDISONNOTED | GENIUS IS ONE PERCENT INSPIRATION AND NINETY NINE PERCENT PERSPIRATION THOMAS EDISON NOTED | lorenz | lorenz | machine | {
"type": "seed",
"value": "STURGEON"
} | expert | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
cda-0012523 | 13 11 15 43 11 42 43 23 24 21 44 15 14 44 23 15 11 31 35 23 11 12 15 44 12 54 44 23 42 15 15 35 34 43 24 44 24 34 33 43 35 11 44 44 15 42 33 52 34 42 14 43 23 15 31 35 12 42 15 11 25 32 34 33 34 11 31 35 23 11 12 15 44 24 13 43 45 12 43 44 24 44 45 44 24 34 33 44 23 15 11 45 44 34 25 15 54 13 24 35 23 15 42 15 53 44 15... | 13 11 15 43 11 42 43 23 24 21 44 15 14 44 23 15 11 31 35 23 11 12 15 44 12 54 44 23 42 15 15 35 34 43 24 44 24 34 33 43 35 11 44 44 15 42 33 52 34 42 14 43 23 15 31 35 12 42 15 11 25 32 34 33 34 11 31 35 23 11 12 15 44 24 13 43 45 12 43 44 24 44 45 44 24 34 33 44 23 15 11 45 44 34 25 15 54 13 24 35 23 15 42 15 53 44 15... | CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF A STRONG CLAIM NEEDS STRONG EVIDENCE | polybius | polybius | null | {} | hard | en | 169 | 169 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
four-square-v2-0143 | DORNXLOUKNXRIUITWY | DORNXLOUKNXRIUITWY | KEEP YOUR POWDER DRY | four_square | four_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
running-key-v2-0040 | SCLKZUHERURDHNJVPQCFMRYS | SCLKZUHERURDHNJVPQCFMRYS | NORTH STAR HOLDS FIRM COURSE | running_key | running_key | polyalphabetic | {
"type": "text",
"value": "Gettysburg Address opening"
} | intermediate | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
jn25-v3-0302 | 21257 21232 21239 21248 21239 21256 21239 21242 21235 21248 21259 21230 21249 21242 21247 21249 21230 21231 21249 21256 21239 21242 21248 21247 21239 21248 21244 21236 21239 21237 21249 21247 21239 21243 21238 21239 21243 21244 21242 21255 21237 21244 21233 21256 21239 21249 21230 21244 21232 21239 21243 21239 21239 21... | 21257 21232 21239 21248 21239 21256 21239 21242 21235 21248 21259 21230 21249 21242 21247 21249 21230 21231 21249 21256 21239 21242 21248 21247 21239 21248 21244 21236 21239 21237 21249 21247 21239 21243 21238 21239 21243 21244 21242 21255 21237 21244 21233 21256 21239 21249 21230 21244 21232 21239 21243 21239 21239 21... | WHENEVER ANY FORM OF GOVERNMENT BECOMES DESTRUCTIVE OF THESE ENDS IT IS THE RIGHT OF THE PEOPLE TO ALTER OR TO ABOLISH IT AND TO INSTITUTE NEW GOVERNMENT LAYING ITS FOUNDATION ON SUCH PRINCIPLES | jn25 | jn25 | codebook | {
"type": "additive",
"value": "11235"
} | expert | en | 805 | 965 | cipher_museum | 2.0 | public | null | null |
kl7-v2-0410 | YJUTZSQCZDGXC | YJUTZSQCZDGXC | E PLURIBUS UNUM | kl7 | kl7 | machine | {
"type": "seed",
"value": "ALLIANCE"
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
bifid-la-039 | WPBZBZBHHITAZEPEYRRBIXRRM | WPBZBZBHHITAZEPEYRRBIXRRM | OMNIA MUTANTUR NIHIL INTERIT | bifid | bifid | fractionation | {
"type": "keyword",
"value": "KEYWORD"
} | advanced | la | 25 | 25 | cipher_museum | 0.2 | public | null | null |
cda-0013930 | SGNQVYGTCMXIXZLPZSYKJNHELHSMLLDYXPKJFAMFQYIHVXGXXAOZUDSJYYSWKPPXFRXHTLDFRUIVDEQAMQNDDCVBQXZQUYYVAVWTSCCXTCGPZUQZMLHDHESOMBRNUSUSWFGZBMCKLKQEYHMRMRLKYCOBWISHYJDTFPIXZGSCAZJEGFWZX | SGNQVYGTCMXIXZLPZSYKJNHELHSMLLDYXPKJFAMFQYIHVXGXXAOZUDSJYYSWKPPXFRXHTLDFRUIVDEQAMQNDDCVBQXZQUYYVAVWTSCCXTCGPZUQZMLHDHESOMBRNUSUSWFGZBMCKLKQEYHMRMRLKYCOBWISHYJDTFPIXZGSCAZJEGFWZX | THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES ATBASH ENCODES BY REVERSING THE ALPHABET | vernam | vernam | null | {} | hard | en | 177 | 177 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
affine-v2-1209 | KIB OBXTLBWK ZIJAA JQGJWFB JK MTOZK ATXIK ZVSSHOKBQ UN JOKTAABON HW KIB BJZKBOW MAJWP KHQJN | KIB OBXTLBWK ZIJAA JQGJWFB JK MTOZK ATXIK ZVSSHOKBQ UN JOKTAABON HW KIB BJZKBOW MAJWP KHQJN | THE REGIMENT SHALL ADVANCE AT FIRST LIGHT SUPPORTED BY ARTILLERY ON THE EASTERN FLANK TODAY | affine | affine | substitution | {
"a": 11,
"b": 9
} | beginner | en | 77 | 91 | cipher_museum | 2.0 | public | null | null |
nihilist-v3-0354 | 63 38 88 66 26 63 58 47 74 57 84 38 47 63 54 87 38 60 33 47 87 26 46 36 45 63 59 86 54 57 76 29 80 53 36 96 26 76 45 37 66 27 58 45 57 84 26 80 53 26 87 29 79 66 44 76 56 70 33 23 76 59 79 54 23 97 46 59 54 25 94 26 80 53 56 | 63 38 88 66 26 63 58 47 74 57 84 38 47 63 54 87 38 60 33 47 87 26 46 36 45 63 59 86 54 57 76 29 80 53 36 96 26 76 45 37 66 27 58 45 57 84 26 80 53 26 87 29 79 66 44 76 56 70 33 23 76 59 79 54 23 97 46 59 54 25 94 26 80 53 56 | NEWTON SAW THE APPLE FALL AND INTUITED THE SAME FORCE THAT HOLDS THE PLANETS IN THEIR PATHS | nihilist | nihilist | fractionation | {
"polybius": "NARODNAYA",
"keyword": "VOLYA"
} | advanced | en | 150 | 224 | cipher_museum | 2.0 | public | null | null |
argenti-v2-0042 | 14 41 22 71 32 24 82 44 88 65 87 73 21 39 22 25 32 18 88 51 22 19 88 82 69 66 34 21 24 30 75 45 65 32 14 43 73 41 82 65 39 52 43 57 79 22 44 | 14 41 22 71 32 24 82 44 88 65 87 73 21 39 22 25 32 18 88 51 22 19 88 82 69 66 34 21 24 30 75 45 65 32 14 43 73 41 82 65 39 52 43 57 79 22 44 | THE COURSE OF TRUE LOVE NEVER DID RUN SMOOTH THROUGH AGES | argenti | argenti | nomenclator | {
"type": "seed",
"value": "ROME"
} | expert | en | 94 | 140 | cipher_museum | 2.0 | public | null | null |
sigaba-v2-0353 | PKGUOVMTQYJLYFEJDNYXNHPLEPUJGCGOYZYVGJUUTLLCENRRGFHNRFEDPYIMZVQMUCSIDFYVPRAJH | PKGUOVMTQYJLYFEJDNYXNHPLEPUJGCGOYZYVGJUUTLLCENRRGFHNRFEDPYIMZVQMUCSIDFYVPRAJH | DEUTSCHLAND UBER ALLES IN DER WELT WENN ES STETS ZU SCHUTZ UND TRUTZE BRÜDERLICH ZUSAMMENHÄLT | sigaba | sigaba | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v3-0229 | MLSRYGBGMAAGRYGYBLUGLYNAGYBTEYD | MLSRYGBGMAAGRYGYBLUGLYNAGYBTEYD | THE PRINTING PRESS CHANGES ALL | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 31 | 31 | cipher_museum | 2.0 | public | null | null |
cda-0006260 | TEWSQ ZOARF GVZOG RRNRL YSAUG UTEBZ FGOGV FGWQF | TEWSQ ZOARF GVZOG RRNRL YSAUG UTEBZ FGOGV FGWQF | FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS | porta | porta | null | {
"key": "PATTERN"
} | medium | en | 40 | 40 | synthetic_educational | null | null | [
"kasiski_examination",
"index_of_coincidence"
] | Porta: 13-row table polyalphabetic cipher; reciprocal (encrypt = decrypt). |
bifid-v3-0201 | DBTIFYINEACWVGWIHEB | DBTIFYINEACWVGWIHEB | AVE MARIA GRATIA PLENA | bifid | bifid | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-519 | IKOSTJF IPUKOQ SBF LKGY PJY SBF LOPUF VBK YPOF SK PAS | IKOSTJF IPUKOQ SBF LKGY PJY SBF LOPUF VBK YPOF SK PAS | FORTUNE FAVORS THE BOLD AND THE BRAVE WHO DARE TO ACT | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "PLAYFAIR"
} | beginner | en | 43 | 53 | cipher_museum | 0.2 | public | null | null |
wheatstone-v3-0108 | TEAIACFMKSSTLKDRALDY | TEAIACFMKSSTLKDRALDY | THE LEGIONS STAND READY | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "LONDON"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
caesar-v2-1451 | A USF VG SDD LZAFYK LZJGMYZ UZJAKL OZAUZ KLJWFYLZWFWLZ EW AF WNWJQ LJASD SFV LJATMDSLAGF | A USF VG SDD LZAFYK LZJGMYZ UZJAKL OZAUZ KLJWFYLZWFWLZ EW AF WNWJQ LJASD SFV LJATMDSLAGF | I CAN DO ALL THINGS THROUGH CHRIST WHICH STRENGTHENETH ME IN EVERY TRIAL AND TRIBULATION | caesar | caesar | substitution | {
"type": "shift",
"value": 18
} | beginner | en | 74 | 88 | cipher_museum | 2.0 | public | null | null |
typex-v2-0313 | TMLPSJINPDAVIHRQZPDZXGVNCHOSSICXIDRDEZGCZFIGPCHLQHJFEWVNUDCNWSHVFMSKLYEY | TMLPSJINPDAVIHRQZPDZXGVNCHOSSICXIDRDEZGCZFIGPCHLQHJFEWVNUDCNWSHVFMSKLYEY | ASK WHAT YOU CAN DO FOR YOUR COUNTRY NOT WHAT YOUR COUNTRY CAN DO FOR YOU TODAY AND ALWAYS | typex | typex | machine | {
"type": "keyword",
"value": "EMPIRE"
} | expert | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
diana-v2-0133 | AHYPIPGKYAKXSS | AHYPIPGKYAKXSS | SIGNAL FIRES LIT | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "SPECIAL"
} | intermediate | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
m209-v3-0201 | KWAUOLZQJJXOATNNPZTOMZDPZMYQIJVEQKQOHAHVAUOMAJWFYOZGWKYBQSJUWPXXACLKDOBHUMVDRSKVDLRJRBPBGVIVESRLWCRVXVLEQALVXNYFPJYKHXVAVVCPQTEQAKWXZKTTKYDGKXDRSDYVRIXWRXTADLJ | KWAUOLZQJJXOATNNPZTOMZDPZMYQIJVEQKQOHAHVAUOMAJWFYOZGWKYBQSJUWPXXACLKDOBHUMVDRSKVDLRJRBPBGVIVESRLWCRVXVLEQALVXNYFPJYKHXVAVVCPQTEQAKWXZKTTKYDGKXDRSDYVRIXWRXTADLJ | 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 | m209 | m209 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 159 | 159 | cipher_museum | 2.0 | public | null | null |
cda-0020892 | FDEJPSVDYYEUGWQLTHJZUOGXNJRWFQFSWHQCJEATBBNMRFZTGYREHGNHCFIRJTOIGFQHNCDDWKEVZFZDYBZUMPHXT | FDEJPSVDYYEUGWQLTHJZUOGXNJRWFQFSWHQCJEATBBNMRFZTGYREHGNHCFIRJTOIGFQHNCDDWKEVZFZDYBZUMPHXT | HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS | one_time_pad | one_time_pad | null | {} | hard | en | 89 | 89 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
vic-v3-0284 | 18686787923085787589488898891381584759439184889208178058887067808088481187835885847586795186269484180849438078775584391786351863941005847515918488920812380888637928719334917007945841918075383884180701868934751933813821873918688470819256 | 18686787923085787589488898891381584759439184889208178058887067808088481187835885847586795186269484180849438078775584391786351863941005847515918488920812380888637928719334917007945841918075383884180701868934751933813821873918688470819256 | 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": "LIBERTY"
} | advanced | en | 236 | 236 | cipher_museum | 2.0 | public | null | null |
kl7-084 | BEPYRHQHYI | BEPYRHQHYI | TRUST NO ONE | kl7 | kl7 | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 10 | 10 | cipher_museum | 0.2 | public | null | null |
vernam-v2-0120 | QSEZMKSAWVNSO | QSEZMKSAWVNSO | AWAIT MY SIGNAL | vernam | vernam | stream | {
"type": "pad",
"value": "QWERTY (repeating)"
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
vic-v3-0322 | 90822902852898048721292268589 | 90822902852898048721292268589 | THE TELESCOPE REVEALS | vic | vic | substitution | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 29 | 29 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v2-0736 | KJZJDSAYWQKWVCUYQLVDDOQCXLEDWSEYMLSCUFSSXMVVAYYGBRMSKXCPKFSELFWYQQPJAVEWHPTFMFSNJ | KJZJDSAYWQKWVCUYQLVDDOQCXLEDWSEYMLSCUFSSXMVVAYYGBRMSKXCPKFSELFWYQQPJAVEWHPTFMFSNJ | GENERAL ORDERS NUMBER ONE ALL COMMUNICATIONS SHALL BE ENCRYPTED USING THE APPROVED CIPHER DISK | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 14
} | expert | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
red-type-a-v3-0056 | SIVIUJEBADUQILFUZWECMCEZOBEEXODZTEQIDUVEFIHUFRAHLTIKDLYHIXAYJTGIDUNIZEHEVFYQAX | SIVIUJEBADUQILFUZWECMCEZOBEEXODZTEQIDUVEFIHUFRAHLTIKDLYHIXAYJTGIDUNIZEHEVFYQAX | GENIUS IS ONE PERCENT INSPIRATION AND NINETY NINE PERCENT PERSPIRATION THOMAS EDISON NOTED | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "SAKURA"
} | advanced | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v2-0396 | FDFJCOVYKJNGM | FDFJCOVYKJNGM | AWAIT MY SIGNAL | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 10
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
alberti-disk-141 | DKRHXLRKQOWWKJFWPK | DKRHXLRKQOWWKJFWPK | THE BRIDGE IS SECURED | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 13
} | expert | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
chaocipher-v2-0148 | VJAGPGMUGZQOUZQF | VJAGPGMUGZQOUZQF | DIVIDE AND CONQUER | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
cda-0013952 | posts array takes troop enemy right notes width opens right depot south heavy eight leads phase below right early after kings miles other north outer | posts array takes troop enemy right notes width opens right depot south heavy eight leads phase below right early after kings miles other north outer | PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION | 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. |
copiale-090 | B5 O2 Y0 Y0 U7 D1 I3 E8 O2 Y8 G8 | B5 O2 Y0 Y0 U7 D1 I3 E8 O2 Y8 G8 | RALLY AT DAWN | copiale | copiale | substitution | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 22 | 32 | cipher_museum | 0.2 | public | null | null |
cda-0002401 | HURC YOKN OVEP WBVN ESAQ DMCG FCOW FFBT YSFH NEFF WAIY GOAS AIFY LFSQ IEVG LQZO VZFF VAIY QPRG SGGR RHAR SEFQ EHFW ALSA GDCC LZRO EIER FHAQ SEGO VAFM VAOQ WEHE VPHG WCA | HURC YOKN OVEP WBVN ESAQ DMCG FCOW FFBT YSFH NEFF WAIY GOAS AIFY LFSQ IEVG LQZO VZFF VAIY QPRG SGGR RHAR SEFQ EHFW ALSA GDCC LZRO EIER FHAQ SEGO VAFM VAOQ WEHE VPHG WCA | THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | porta | porta | null | {
"key": "LIBRARY"
} | hard | en | 135 | 135 | synthetic_educational | null | null | [
"kasiski_examination",
"index_of_coincidence"
] | Porta: 13-row table polyalphabetic cipher; reciprocal (encrypt = decrypt). |
cda-0003913 | LLGG VWLH KQAS KHOH ZEFI CWQS GTYV HFXX EKFT PTSM OKDO HSVB MRTB GMUJ PBUT N | LLGG VWLH KQAS KHOH ZEFI CWQS GTYV HFXX EKFT PTSM OKDO HSVB MRTB GMUJ PBUT N | THE MESSAGE WAS HIDDEN BUT NOT SECURE FAIL CLOSED IS A POSTURE NOT A SLOGAN | autokey | autokey | null | {
"primer": "SECURE"
} | medium | en | 61 | 61 | synthetic_educational | null | null | [
"running_key_analysis",
"index_of_coincidence"
] | Autokey: Vigenère where the plaintext extends the key — harder to Kasiski-attack. |
rail-fence-v2-0399 | KNOWTHYSEFL | KNOWTHYSEFL | KNOW THYSELF | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 10
} | intermediate | en | 11 | 11 | cipher_museum | 2.0 | public | null | null |
typex-v3-0185 | ONKJXMMERASVJOLJQBYLARQTBNQBCZQJVPBFNIRSGSKUJTQZLUSCLBHHXJNJRVLCCQIWLEQMRQKAULSN | ONKJXMMERASVJOLJQBYLARQTBNQBCZQJVPBFNIRSGSKUJTQZLUSCLBHHXJNJRVLCCQIWLEQMRQKAULSN | THE MOLE BURIED DEEP IN THE INTELLIGENCE AGENCY PASSED VITAL SECRETS TO THE OTHER SIDE FOR YEARS | typex | typex | machine | {
"type": "keyword",
"value": "BRITAIN"
} | expert | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
bifid-134 | ASPEQERBOWWYFVRELQ | ASPEQERBOWWYFVRELQ | AWAIT FURTHER ORDERS | bifid | bifid | fractionation | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
monoalphabetic-v2-0577 | QAR PRBORQ KT YRQQCJY LARLE CP YRQQCJY PQLOQRE KJR PQRM LQ L QCHR YRQP XKS UROX TLO CJERRE | QAR PRBORQ KT YRQQCJY LARLE CP YRQQCJY PQLOQRE KJR PQRM LQ L QCHR YRQP XKS UROX TLO CJERRE | THE SECRET OF GETTING AHEAD IS GETTING STARTED ONE STEP AT A TIME GETS YOU VERY FAR INDEED | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "LIBERTY"
} | beginner | en | 73 | 90 | cipher_museum | 2.0 | public | null | null |
tap-code-033 | . ..... ... . . ..... ... .. . ..... ... ... .... .... . . .... .. ..... .... ... .. ..... .... . .... . ..... . . .... .. ..... .. . . .... .... .... ... ... .... ... ... .... .... .. ... . ..... .. .. . . ... .. . ..... .. .... .... ... . . .. . ... ..... | . ..... ... . . ..... ... .. . ..... ... ... .... .... . . .... .. ..... .... ... .. ..... .... . .... . ..... . . .... .. ..... .. . . .... .... .... ... ... .... ... ... .... .... .. ... . ..... .. .. . . ... .. . ..... .. .... .... ... . . .. . ... ..... | ELEMENTARY MY DEAR WATSON THE GAME IS AFOOT AND THE CRIMINAL IS CLOSE | tap_code | tap_code | substitution | {
"type": "none",
"value": null
} | beginner | en | 316 | 541 | cipher_museum | 0.2 | public | null | null |
cda-0013905 | ⟨w26⟩ ⟨w10⟩ ⟨w10⟩ ⟨a17⟩ ⟨w20⟩ ⟨a17⟩ ⟨w28⟩ ⟨w14⟩ ⟨w08⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨w08⟩ ⟨a01⟩ ⟨a25⟩ ⟨w10⟩ ⟨w10⟩ ⟨a01⟩ ⟨w22⟩ ⟨w20⟩ ⟨a37⟩ ⟨a13⟩ ⟨a01⟩ ⟨w08⟩ ⟨w32⟩ ⟨a07⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w32⟩ ⟨a19⟩ ⟨a01⟩ ⟨w32⟩ ⟨w04⟩ ⟨w32⟩ ⟨a25⟩ ⟨w22⟩ ⟨a13⟩ ⟨w10⟩ ⟨a01⟩ ⟨w40⟩ ⟨a11⟩ ⟨w32⟩ ⟨w28⟩ ⟨w22⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨w10⟩ ⟨a17⟩ ⟨w20⟩ ⟨a17⟩ ⟨a... | ⟨w26⟩ ⟨w10⟩ ⟨w10⟩ ⟨a17⟩ ⟨w20⟩ ⟨a17⟩ ⟨w28⟩ ⟨w14⟩ ⟨w08⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨w08⟩ ⟨a01⟩ ⟨a25⟩ ⟨w10⟩ ⟨w10⟩ ⟨a01⟩ ⟨w22⟩ ⟨w20⟩ ⟨a37⟩ ⟨a13⟩ ⟨a01⟩ ⟨w08⟩ ⟨w32⟩ ⟨a07⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w32⟩ ⟨a19⟩ ⟨a01⟩ ⟨w32⟩ ⟨w04⟩ ⟨w32⟩ ⟨a25⟩ ⟨w22⟩ ⟨a13⟩ ⟨w10⟩ ⟨a01⟩ ⟨w40⟩ ⟨a11⟩ ⟨w32⟩ ⟨w28⟩ ⟨w22⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨w10⟩ ⟨a17⟩ ⟨w20⟩ ⟨a17⟩ ⟨a... | GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE | babington | babington | null | {} | hard | en | 89 | 89 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
cardano-autokey-v3-0138 | TZOLZFBFALHWZVZOV | TZOLZFBFALHWZVZOV | OLD IRONSIDES HOLDS | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "FLORENCE"
} | advanced | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
cda-0021583 | ABAA BAAB AABA AAAA AABA ABAA BAAB BBAB BABA ABAB AABA BBAA ABAB BBAB AAAA ABAA AABB AAAA ABAA BAAA ABBB AABA BAAA BAAB AAAB AAAA ABAB BABA AABB AABA AABB BAAB AABA AABB ABBA BAAA BBAA BAAA BAAA BABB ABAB BBAA BBBA AABB AABA AAAA BAAB AABA AABA ABAA AAAB ABAA BBBA AAAA ABAA AABA ABAA BBAA BAAA BBAA ABAA AAAB ABAA BAAA ... | ABAA BAAB AABA AAAA AABA ABAA BAAB BBAB BABA ABAB AABA BBAA ABAB BBAB AAAA ABAA AABB AAAA ABAA BAAA ABBB AABA BAAA BAAB AAAB AAAA ABAB BABA AABB AABA AABB BAAB AABA AABB ABBA BAAA BBAA BAAA BAAA BABB ABAB BBAA BBBA AABB AABA AAAA BAAB AABA AABA ABAA AAAB ABAA BBBA AAAA ABAA AABA ABAA BBAA BAAA BBAA ABAA AAAB ABAA BAAA ... | KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY | bacon_cipher | bacon_cipher | null | {} | hard | en | 1,055 | 1,055 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
cda-0019410 | 62 45 14 67 39 33 25 3 2 81 43 63 76 11 49 60 49 76 99 82 63 63 30 93 23 43 87 26 96 32 4 99 2 3 48 70 35 3 92 63 25 59 76 15 60 86 49 87 33 35 34 41 63 68 76 57 58 82 63 88 92 34 22 86 82 58 64 11 63 2 25 49 33 99 35 33 2 70 62 87 2 34 22 61 14 96 60 88 93 99 80 49 70 57 | 62 45 14 67 39 33 25 3 2 81 43 63 76 11 49 60 49 76 99 82 63 63 30 93 23 43 87 26 96 32 4 99 2 3 48 70 35 3 92 63 25 59 76 15 60 86 49 87 33 35 34 41 63 68 76 57 58 82 63 88 92 34 22 86 82 58 64 11 63 2 25 49 33 99 35 33 2 70 62 87 2 34 22 61 14 96 60 88 93 99 80 49 70 57 | DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING | homophonic | homophonic | null | {} | hard | en | 94 | 94 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
typex-v2-0325 | AAHNYHDCJFWOGUAKWXTRAWGSGOCMRNAYMLRVHSKIJPBPVHVAQUTVFKZJGMQPUWGQNTVWAXYOQ | AAHNYHDCJFWOGUAKWXTRAWGSGOCMRNAYMLRVHSKIJPBPVHVAQUTVFKZJGMQPUWGQNTVWAXYOQ | THE SECRET OF GETTING AHEAD IS GETTING STARTED ONE STEP AT A TIME GETS YOU VERY FAR INDEED | typex | typex | machine | {
"type": "keyword",
"value": "EMPIRE"
} | expert | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
playfair-v3-0668 | QLCLWPKIMAMPODLMEGRZ | QLCLWPKIMAMPODLMEGRZ | THE KING DEMANDS FEALTY | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "WISDOM"
} | intermediate | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
cda-0012857 | K r· L K· Γ· ¬· L ─ L ┌· L r Γ· ┐· r· L ┌· X· X L X ⌐ ┌· L ┐· L ⌐ K Γ· ─ ¬· ┐ L ⌒· ⌒ ┘· ┌· Γ ⌐· ┌· Γ· L Γ ┌ ⌐ ─ L X K Γ· ┌ ⌐ K L Γ ┐ L ⌒· └ L ─ ¬· K r· ⌐· ┌· ┘· ┌ X K ⌐ K Γ· X K Γ· r X | K r· L K· Γ· ¬· L ─ L ┌· L r Γ· ┐· r· L ┌· X· X L X ⌐ ┌· L ┐· L ⌐ K Γ· ─ ¬· ┐ L ⌒· ⌒ ┘· ┌· Γ ⌐· ┌· Γ· L Γ ┌ ⌐ ─ L X K Γ· ┌ ⌐ K L Γ ┐ L ⌒· └ L ─ ¬· K r· ⌐· ┌· ┘· ┌ X K ⌐ K Γ· X K Γ· r X | THE VIGENERE CIPHER USES A REPEATING KEYWORD FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS | pigpen | pigpen | null | {} | medium | en | 35 | 35 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
porta-v3-0267 | CQRBTZEEWPPRAWGCFBVRZIZSHSWYSOPWISZBKUWFDJFNZJYNDZPILUTRITWPRYEJGBKUWDPWVI | CQRBTZEEWPPRAWGCFBVRZIZSHSWYSOPWISZBKUWFDJFNZJYNDZPILUTRITWPRYEJGBKUWDPWVI | THE THIN RED LINE STOOD FIRM AT BALACLAVA AS THE RUSSIAN CAVALRY CHARGED ACROSS THE PLAIN | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "ITALY"
} | intermediate | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
scytale-v3-0449 | YANKEEDOODLE | YANKEEDOODLE | YANKEE DOODLE | scytale | scytale | transposition | {
"type": "integer",
"value": 12
} | intermediate | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
vigenere-327 | DLCPFRSSWQAH | DLCPFRSSWQAH | THE TRAP IS SET | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "KEYWORD"
} | intermediate | en | 12 | 12 | cipher_museum | 0.2 | public | null | null |
cda-0012042 | .... .... .. ... . ..... .. . ... .... .... ..... .... .. .... ... .... . .... ..... . . .... .. . ..... . ... .. .... ... ..... .. ... . ..... .... .. .... ..... .... ... . ..... .... ... .... .... ..... .. ... .... . ... . ..... ..... .... ..... .. ... .... .... .. . .... ... ..... .... | .... .... .. ... . ..... .. . ... .... .... ..... .... .. .... ... .... . .... ..... . . .... .. . ..... . ... .. .... ... ..... .. ... . ..... .... .. .... ..... .... ... . ..... .... ... .... .... ..... .. ... .... . ... . ..... ..... .... ..... .. ... .... .... .. . .... ... ..... .... | THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES | tap_code | tap_code | null | {} | medium | en | 48 | 48 | synthetic_educational | null | null | [
"dot_count_decode",
"grid_position_search"
] | Tap code: letters encoded as dot-groups representing row and column in 5×5 grid. |
nihilist-v3-0370 | 97 46 59 43 45 65 59 67 36 24 73 56 47 34 24 67 28 89 65 44 66 67 79 66 44 64 59 58 35 47 87 47 79 54 26 63 58 68 32 44 64 58 67 46 63 63 37 80 54 26 63 58 49 44 35 103 27 60 33 25 96 28 49 32 36 65 59 67 33 23 76 68 77 45 35 97 38 50 | 97 46 59 43 45 65 59 67 36 24 73 56 47 34 24 67 28 89 65 44 66 67 79 66 44 64 59 58 35 47 87 47 79 54 26 63 58 68 32 44 64 58 67 46 63 63 37 80 54 26 63 58 49 44 35 103 27 60 33 25 96 28 49 32 36 65 59 67 33 23 76 68 77 45 35 97 38 50 | THE BIRTHDAY PARADOX SHOWS THAT COLLISIONS IN HASH FUNCTIONS OCCUR FAR SOONER THAN EXPECTED | nihilist | nihilist | fractionation | {
"polybius": "NARODNAYA",
"keyword": "VOLYA"
} | advanced | en | 157 | 234 | cipher_museum | 2.0 | public | null | null |
cda-0013843 | GMFC ABPE HFMZ TVSG FUMM RMZW RJCO PABD VOOM KLWR QUYA PJZP LXEY AYMH MDRZ VJPL VDZY PMQS SCEA ZGOM IOGH GUXG KCPL GUUH WNRY XHZV LOUW QYJG ABLT QORG PIMH YUAB ZUBK ZER | GMFC ABPE HFMZ TVSG FUMM RMZW RJCO PABD VOOM KLWR QUYA PJZP LXEY AYMH MDRZ VJPL VDZY PMQS SCEA ZGOM IOGH GUXG KCPL GUUH WNRY XHZV LOUW QYJG ABLT QORG PIMH YUAB ZUBK ZER | ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG | vernam | vernam | null | {} | hard | en | 135 | 135 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
porta-032 | LYANAXBEYJIDAHJHMIVLQOEBQVLTTPKVRZULNVVZDHPRZ | LYANAXBEYJIDAHJHMIVLQOEBQVLTTPKVRZULNVVZDHPRZ | NEVER INTERRUPT YOUR ENEMY WHEN HE IS MAKING A MISTAKE | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "FORTIFY"
} | intermediate | en | 45 | 45 | cipher_museum | 0.2 | public | null | null |
cda-0010340 | IITXO GSTKO HPISB TSLTI NNDLA ANBMO AXEOE IMTLD BAOLA XTITP XRRUR OOLAL CRUTX TXDEP CEOPA SEINN EEIUH TSXWO H | IITXO GSTKO HPISB TSLTI NNDLA ANBMO AXEOE IMTLD BAOLA XTITP XRRUR OOLAL CRUTX TXDEP CEOPA SEINN EEIUH TSXWO H | GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION | double_transposition | double_transposition | null | {
"key1": "JUSTICE",
"key2": "FREEDOM"
} | hard | en | 91 | 91 | synthetic_educational | null | null | [] | |
sigaba-v2-0140 | CHDWENSQDOMWIA | CHDWENSQDOMWIA | PRESS THE ATTACK | sigaba | sigaba | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v2-0258 | ESPALDDTDSPWO | ESPALDDTDSPWO | THE PASS IS HELD | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "HANGUL"
} | beginner | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
m209-161 | DKUPOKIVCJFPILAOLPJKGCFQZPWPNENICIKGWEIEPJCCRAQ | DKUPOKIVCJFPILAOLPJKGCFQZPWPNENICIKGWEIEPJCCRAQ | ASK NOT WHAT YOUR COUNTRY CAN DO FOR YOU BUT WHAT YOU CAN DO | m209 | m209 | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 47 | 47 | cipher_museum | 0.2 | public | null | null |
adfgvx-v2-0132 | AFFGFDGAAGFDAAAGGFAGGAXDDA | AFFGFDGAAGFDAAAGGFAGGAXDDA | THE PASS IS HELD | adfgvx | adfgvx | fractionation | {
"polybius": "LIBERTY",
"columnar": "FREEDOM"
} | advanced | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
kama-sutra-115 | VEVUI BVZUVA WTB T LVVXVU TGQ VEVUI ZFQV WTB T SUVTLVU HWF BVVLB AWV AURAW | VEVUI BVZUVA WTB T LVVXVU TGQ VEVUI ZFQV WTB T SUVTLVU HWF BVVLB AWV AURAW | EVERY SECRET HAS A KEEPER AND EVERY CODE HAS A BREAKER WHO SEEKS THE TRUTH | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | en | 60 | 74 | cipher_museum | 0.2 | public | null | null |
kl7-v2-0217 | CNRQMKEKMIBPMGMYMVPTUOFFKVARTHWBXNZWJWLMEDSHQDOZWKIHYWAPDGDIWREEWHJGFYUZOGGVGTJD | CNRQMKEKMIBPMGMYMVPTUOFFKVARTHWBXNZWJWLMEDSHQDOZWKIHYWAPDGDIWREEWHJGFYUZOGGVGTJD | THE SECRET LIES BURIED BENEATH THE THIRD FLAGSTONE OF THE OLD CHURCH COURTYARD AT DAWN TOMORROW | kl7 | kl7 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
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