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2.11k
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stringlengths
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282
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81 values
cipher
stringclasses
81 values
cipher_family
stringclasses
13 values
key
unknown
difficulty
stringclasses
7 values
language
stringclasses
8 values
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int64
6
1.09k
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int64
6
1.28k
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2 values
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2 values
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1 value
attack_methods
listlengths
0
3
educational_note
stringclasses
32 values
atbash-060
XIBKGZMZOBHRH RH GSV ZIG LU YIVZPRMT XLWVH DRGSLFG GSV PVB ZMW RG SZH YVVM KIZXGRXVW ULI ZH OLMT ZH GSVIV SZEV YVVM XLWVH GL YIVZP GSV SRHGLIB LU XIBKGLOLTB RH Z YZGGOV LU DRGH
XIBKGZMZOBHRH RH GSV ZIG LU YIVZPRMT XLWVH DRGSLFG GSV PVB ZMW RG SZH YVVM KIZXGRXVW ULI ZH OLMT ZH GSVIV SZEV YVVM XLWVH GL YIVZP GSV SRHGLIB LU XIBKGLOLTB RH Z YZGGOV LU DRGH
CRYPTANALYSIS IS THE ART OF BREAKING CODES WITHOUT THE KEY AND IT HAS BEEN PRACTICED FOR AS LONG AS THERE HAVE BEEN CODES TO BREAK THE HISTORY OF CRYPTOLOGY IS A BATTLE OF WITS
atbash
atbash
substitution
{ "type": "none", "value": null }
beginner
en
143
176
cipher_museum
0.2
public
null
null
fractionated-morse-v2-0099
BCDTSTVJOOSFUQCTUPTTDJAVLLIFNJFTDQDLKTDSDLMVLDHTLAWVJLPODHULJIDDKSXEDTFWQTWTFNNBJBN
BCDTSTVJOOSFUQCTUPTTDJAVLLIFNJFTDQDLKTDSDLMVLDHTLAWVJLPODHULJIDDKSXEDTFWQTWTFNNBJBN
ALEA IACTA EST ET CAESAR RUBICONE TRANSGRESSO BELLUM CIVILE INCIPIT PER TOTAM ROMANAM
fractionated_morse
fractionated_morse
fractionation
{ "type": "keyword", "value": "PALACE" }
advanced
en
83
83
cipher_museum
2.0
public
null
null
solitaire-v3-0306
ABRBPSEAGQSJCDCYNTZUXFWGCBCDHLGZZXHLLKEEOANFUHXKYFWYZVGHVKIUEDPDSOLJUVRPYHFHOJZZCTQUXHYITACGLFEZWLEWBDOFYEOCALNUNIQYNRXOWTJIZFJZECAMQXXROZYVGAVSLUBTCCFMLNPOKULW
ABRBPSEAGQSJCDCYNTZUXFWGCBCDHLGZZXHLLKEEOANFUHXKYFWYZVGHVKIUEDPDSOLJUVRPYHFHOJZZCTQUXHYITACGLFEZWLEWBDOFYEOCALNUNIQYNRXOWTJIZFJZECAMQXXROZYVGAVSLUBTCCFMLNPOKULW
FOR I KNOW THE THOUGHTS THAT I THINK TOWARD YOU SAITH THE LORD THOUGHTS OF PEACE AND NOT OF EVIL TO GIVE YOU AN EXPECTED END THEN SHALL YE CALL UPON ME AND YE SHALL GO AND PRAY UNTO ME AND I WILL HEARKEN
solitaire
solitaire
stream
{ "type": "passphrase", "value": "PONTIFEX" }
expert
en
160
160
cipher_museum
2.0
public
null
null
cda-0014908
BAAAB BAABB AAAAB BAAAB BAABA ABAAA BAABA BAABB BAABA ABAAA ABBAB ABBAA AAABA ABAAA ABBBA AABBB AABAA BAAAA BAAAB ABABB AAAAA ABBBA AABAA AAAAA AAABA AABBB ABABA AABAA BAABA BAABA AABAA BAAAA BAABA ABBAB AAAAA AAABB ABAAA AABAB AABAB AABAA BAAAA AABAA ABBAA BAABA ABABA AABAA BAABA BAABA AABAA BAAAA AABBB BAABB ABABB AA...
BAAAB BAABB AAAAB BAAAB BAABA ABAAA BAABA BAABB BAABA ABAAA ABBAB ABBAA AAABA ABAAA ABBBA AABBB AABAA BAAAA BAAAB ABABB AAAAA ABBBA AABAA AAAAA AAABA AABBB ABABA AABAA BAABA BAABA AABAA BAAAA BAABA ABBAB AAAAA AAABB ABAAA AABAB AABAB AABAA BAAAA AABAA ABBAA BAABA ABABA AABAA BAABA BAABA AABAA BAAAA AABBB BAABB ABABB AA...
SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS SLOWLY
bacon_cipher
bacon_cipher
null
{}
hard
en
510
510
synthetic_educational
null
null
[ "five_bit_decode", "ab_frequency_analysis" ]
Bacon's biliteral cipher: each letter encoded as 5-bit A/B string.
geheimschreiber-v3-0332
OGJRZYYQZOFU
OGJRZYYQZOFU
GOLD FROM LEAD
geheimschreiber
geheimschreiber
machine
{ "type": "seed", "value": "TEUTON" }
expert
en
12
12
cipher_museum
2.0
public
null
null
m209-v3-0015
LXXJTCVAAYYWRL
LXXJTCVAAYYWRL
THE SIEGE BEGINS
m209
m209
machine
{ "type": "seed", "value": "ARMY" }
expert
en
14
14
cipher_museum
2.0
public
null
null
hill-v3-0225
YHGORTZNMYNNXYVOHDXO
YHGORTZNMYNNXYVOHDXO
THE KING DEMANDS FEALTY
hill
hill
polygraphic
{ "a": 7, "b": 3, "c": 4, "d": 5 }
advanced
en
20
20
cipher_museum
2.0
public
null
null
confederate-vigenere-228
DNAHIBLJEDHHYWJCTLSCDVVFRCLPZVGFMPMPVGXREMONGTFKFZZGLICR
DNAHIBLJEDHHYWJCTLSCDVVFRCLPZVGFMPMPVGXREMONGTFKFZZGLICR
IF YOU KNOW BOTH YOURSELF AND YOUR ENEMY YOU NEED NOT FEAR THE RESULT
confederate_vigenere
confederate_vigenere
polyalphabetic
{ "type": "keyword", "value": "VICTORY" }
intermediate
en
56
56
cipher_museum
0.2
public
null
null
bazeries-268
SITUYEQYQTYPTHY
SITUYEQYQTYPTHY
EVACUATE THE BASE
bazeries
bazeries
transposition
{ "type": "integer", "value": 31 }
advanced
en
15
15
cipher_museum
0.2
public
null
null
commercial-code-v2-0108
MABAB ZUZUZ QAZUZ BAZUZ PAZUZ LAZUZ DAZUZ GAZUZ XUZUZ ZUZUZ ZAZUZ SAZUZ DEZUZ BAZUZ WAZUZ FAZUZ XUZUZ ZUZUZ RAZUZ SAZUZ RAZUZ GAZUZ XUZUZ MABAB ZUZUZ DAZUZ KAZUZ BAZUZ WAZUZ LAZUZ ZAZUZ GEZUZ XUZUZ KABAB KEBAB MABAB ZUZUZ HAZUZ LAZUZ WAZUZ QAZUZ RAZUZ GAZUZ XAZUZ XAZUZ XUZUZ GABAB BABAB ZUZUZ WAZUZ LAZUZ JAZUZ KAZUZ ZA...
MABAB ZUZUZ QAZUZ BAZUZ PAZUZ LAZUZ DAZUZ GAZUZ XUZUZ ZUZUZ ZAZUZ SAZUZ DEZUZ BAZUZ WAZUZ FAZUZ XUZUZ ZUZUZ RAZUZ SAZUZ RAZUZ GAZUZ XUZUZ MABAB ZUZUZ DAZUZ KAZUZ BAZUZ WAZUZ LAZUZ ZAZUZ GEZUZ XUZUZ KABAB KEBAB MABAB ZUZUZ HAZUZ LAZUZ WAZUZ QAZUZ RAZUZ GAZUZ XAZUZ XAZUZ XUZUZ GABAB BABAB ZUZUZ WAZUZ LAZUZ JAZUZ KAZUZ ZA...
WITH MALICE TOWARD NONE WITH CHARITY FOR ALL WITH FIRMNESS IN THE RIGHT AS GOD GIVES US TO SEE THE RIGHT LET US STRIVE ON TO FINISH THE WORK WE ARE IN TO BIND UP THE NATIONS WOUNDS
commercial_code
commercial_code
codebook
{ "type": "none", "value": null }
expert
en
685
821
cipher_museum
2.0
public
null
null
cardano-autokey-v2-0494
OALPZFULAEKQZLTWLVULAZHLWYBHPWNGALQMKOXATQXHZTMHRKJVVTXVIRCPSLNLVWZLPPEDHXATQFFWALHXALWLBTWHWTXVJZLVVWLHFVXATKQGIFSLPPEDHXATQMVGALTPTAZGTWZONAXSIMFRWKXTFYPAFNMQWSKO
OALPZFULAEKQZLTWLVULAZHLWYBHPWNGALQMKOXATQXHZTMHRKJVVTXVIRCPSLNLVWZLPPEDHXATQFFWALHXALWLBTWHWTXVJZLVVWLHFVXATKQGIFSLPPEDHXATQMVGALTPTAZGTWZONAXSIMFRWKXTFYPAFNMQWSKO
THE LORD IS MY SHEPHERD I SHALL NOT WANT HE MAKETH ME TO LIE DOWN IN GREEN PASTURES HE LEADETH ME BESIDE THE STILL WATERS HE RESTORETH MY SOUL HE LEADETH ME IN THE PATHS OF RIGHTEOUSNESS FOR HIS NAME SAKE
cardano_autokey
cardano_autokey
polyalphabetic
{ "type": "keyword", "value": "VENICE" }
advanced
en
164
164
cipher_museum
2.0
public
null
null
kl7-v3-0322
JLZHNBXQIZSLDUSZ
JLZHNBXQIZSLDUSZ
PER ASPERA AD ASTRA
kl7
kl7
machine
{ "type": "seed", "value": "ALLIANCE" }
expert
en
16
16
cipher_museum
2.0
public
null
null
cda-0021990
KVVI IVERVD ZMW IVKILWFXRYRORGB NZGGVI RM IVHVZIXS Z NLWVO XZM XOZHHRUB KZGGVIMH YFG RG XZM ZOHL YV DILMT
KVVI IVERVD ZMW IVKILWFXRYRORGB NZGGVI RM IVHVZIXS Z NLWVO XZM XOZHHRUB KZGGVIMH YFG RG XZM ZOHL YV DILMT
PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG
atbash
atbash
null
{}
hard
en
88
88
synthetic_educational
null
null
[ "self_inverse_check", "frequency_analysis" ]
Atbash maps A↔Z, B↔Y, … and is its own inverse.
lorenz-v2-0448
UDTRAINTELLIGENCEDERIVEDFROMDESRYPTEDGERMANENIGMATRAFFACINDICATESTHATENEMYPANZERDIVISIONSQRECONCENTRATEDATCILAISCONFIRMINGTHEDECEPTIONOPERATIONFORTIDUDEHASSUCCEMDED
UDTRAINTELLIGENCEDERIVEDFROMDESRYPTEDGERMANENIGMATRAFFACINDICATESTHATENEMYPANZERDIVISIONSQRECONCENTRATEDATCILAISCONFIRMINGTHEDECEPTIONOPERATIONFORTIDUDEHASSUCCEMDED
ULTRA INTELLIGENCE DERIVED FROM DECRYPTED GERMAN ENIGMA TRAFFIC INDICATES THAT ENEMY PANZER DIVISIONS ARE CONCENTRATED AT CALAIS CONFIRMING THE DECEPTION OPERATION FORTITUDE HAS SUCCEEDED
lorenz
lorenz
machine
{ "type": "seed", "value": "BLETCHLEY" }
expert
en
164
164
cipher_museum
2.0
public
null
null
copiale-023
Q7 I8 S5 C7 B5 U8 Z3 C9 N2 I9 S6 V0 L4
Q7 I8 S5 C7 B5 U8 Z3 C9 N2 I9 S6 V0 L4
THE KING IS DEAD
copiale
copiale
substitution
{ "type": "keyword", "value": "COPIALE" }
advanced
en
26
38
cipher_museum
0.2
public
null
null
jefferson-disk-v3-0270
MJWNWIHTSIIMPHXTWRBUBZILIPDOWVGULBVPIDIDVDIKLFKRUTQZIIXEQCIRDFKFEVFZBDWRRUCYVPDKPTB
MJWNWIHTSIIMPHXTWRBUBZILIPDOWVGULBVPIDIDVDIKLFKRUTQZIIXEQCIRDFKFEVFZBDWRRUCYVPDKPTB
DIFFIE AND HELLMAN INVENTED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX CHANGING EVERYTHING
jefferson_disk
jefferson_disk
disk
{ "type": "disk_order", "value": "1,3,5,2,4,6" }
expert
en
83
83
cipher_museum
2.0
public
null
null
slidex-103
KRAEOGUOYUOBUYTIPOIVGVIYPYPRKZMNGWKJMQPYPREAIYPU
KRAEOGUOYUOBUYTIPOIVGVIYPYPRKZMNGWKJMQPYPREAIYPU
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG NEAR THE RIVER
slidex
slidex
transposition
{ "type": "keyword", "value": "CIPHER" }
advanced
en
48
48
cipher_museum
0.2
public
null
null
cda-0015742
00390 04181 4723 01336 1572 03856 1023 0400 4471 0980 3795 0391 06043 06037 02879 01911 07906 5065 00357 6377 06356 01611 05721 04482 05986 00704 06597 06335 2890 6356 1011 00326 04438 00329 3851 6055 04734 00675 1593 7264 5662 4747 4425 02260 06310 2580 1617 04154 1644 6053 05998 00327 2249 1666 7300 0319 6014 02540 0...
00390 04181 4723 01336 1572 03856 1023 0400 4471 0980 3795 0391 06043 06037 02879 01911 07906 5065 00357 6377 06356 01611 05721 04482 05986 00704 06597 06335 2890 6356 1011 00326 04438 00329 3851 6055 04734 00675 1593 7264 5662 4747 4425 02260 06310 2580 1617 04154 1644 6053 05998 00327 2249 1666 7300 0319 6014 02540 0...
A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG THE MESSAGE WAS HIDDEN BUT NOT SECURE
zimmermann
zimmermann
null
{}
medium
en
75
75
synthetic_educational
null
null
[ "codebook_frequency", "number_group_analysis" ]
Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher.
kama-sutra-v3-0375
UE V VRI MJN RFFYNV LUAPNX FREVNV UE LYDN EUATREVI QNRPJNX YE MJN KANRMNXM XNRQUAEN YEDRXYUE
UE V VRI MJN RFFYNV LUAPNX FREVNV UE LYDN EUATREVI QNRPJNX YE MJN KANRMNXM XNRQUAEN YEDRXYUE
ON D DAY THE ALLIED FORCES LANDED ON FIVE NORMANDY BEACHES IN THE GREATEST SEABORNE INVASION
kama_sutra
kama_sutra
substitution
{ "type": "keyword", "value": "WISDOM" }
intermediate
en
77
92
cipher_museum
2.0
public
null
null
affine-v3-1514
BLU ZIOLB MQY EUU RHQW XIEBGTB EBGHE ZURB BLQEU EYTE BLQYEGTXE QR MUGHE DURQHU MQYH DIHBL
BLU ZIOLB MQY EUU RHQW XIEBGTB EBGHE ZURB BLQEU EYTE BLQYEGTXE QR MUGHE DURQHU MQYH DIHBL
THE LIGHT YOU SEE FROM DISTANT STARS LEFT THOSE SUNS THOUSANDS OF YEARS BEFORE YOUR BIRTH
affine
affine
substitution
{ "a": 23, "b": 6 }
beginner
en
74
89
cipher_museum
2.0
public
null
null
cda-0003716
CSLH THMR CTTS CFRI STYM TEEN NKSO HENN SAVW CELI CEEW ONUY TKKF IPAH SMBC EIEN ARMQ CAIN EEIR ACIR AHDS RMEE HSNL YETU EUVF MOLI FUYL SRAA PSSA PSCY EEIA RROP CESS ESSR EEYW GTRE AYCE LKHX
CSLH THMR CTTS CFRI STYM TEEN NKSO HENN SAVW CELI CEEW ONUY TKKF IPAH SMBC EIEN ARMQ CAIN EEIR ACIR AHDS RMEE HSNL YETU EUVF MOLI FUYL SRAA PSSA PSCY EEIA RROP CESS ESSR EEYW GTRE AYCE LKHX
CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS
scytale
scytale
null
{ "cols": 4 }
hard
en
152
152
synthetic_educational
null
null
[ "column_count_search", "anagram_recovery" ]
Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter.
cda-0021139
EOERF ZHOSE FGKIO AFKXE BEOFD ATGZO GRNUD WLTXK WFIGM HBPMM GZVZD GAJJM AEWSP HDERL XYWSQ HTMDE IXGVQ TITMW VSHSA MYSSM HCZBZ UTIFY SEKHK QWSIT NXFCE QRIXY WFJKN QOHJL MVYQM JMMVY PZTAO TLUMR LMGUS OJVWS PEC
EOERF ZHOSE FGKIO AFKXE BEOFD ATGZO GRNUD WLTXK WFIGM HBPMM GZVZD GAJJM AEWSP HDERL XYWSQ HTMDE IXGVQ TITMW VSHSA MYSSM HCZBZ UTIFY SEKHK QWSIT NXFCE QRIXY WFJKN QOHJL MVYQM JMMVY PZTAO TLUMR LMGUS OJVWS PEC
PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF SLOWLY
running_key
running_key
null
{}
hard
en
173
173
synthetic_educational
null
null
[ "index_of_coincidence", "probable_plaintext" ]
Running-key cipher: Vigenère with a very long key (e.g. a book passage).
jn25-v2-0046
26102 26187 26180 26199 26188 26198 26188 26193 26180 26193 26180 26192 26184 26199 26187 26180 26199 26102 26187 26188 26182 26187 26102 26184 26182 26180 26191 26191 26180 26197 26194 26198 26184 26181 26104 26180 26193 26104 26194 26199 26187 26184 26197 26193 26180 26192 26184 26102 26194 26100 26191 26183 26198 26...
26102 26187 26180 26199 26188 26198 26188 26193 26180 26193 26180 26192 26184 26199 26187 26180 26199 26102 26187 26188 26182 26187 26102 26184 26182 26180 26191 26191 26180 26197 26194 26198 26184 26181 26104 26180 26193 26104 26194 26199 26187 26184 26197 26193 26180 26192 26184 26102 26194 26100 26191 26183 26198 26...
WHAT IS IN A NAME THAT WHICH WE CALL A ROSE BY ANY OTHER NAME WOULD SMELL AS SWEET
jn25
jn25
codebook
{ "type": "additive", "value": "16180" }
expert
en
320
383
cipher_museum
2.0
public
null
null
venona-pad-reuse-104
GDLLA4RI67IJBMPWSRR2BKXWGOPLAZQIKJKCCFMUDVAZHLM4CDHVG2M2L
GDLLA4RI67IJBMPWSRR2BKXWGOPLAZQIKJKCCFMUDVAZHLM4CDHVG2M2L
ELEMENTARY MY DEAR WATSON THE GAME IS AFOOT AND THE CRIMINAL IS CLOSE
venona_pad_reuse
venona_pad_reuse
stream
{ "type": "keyword", "value": "CIPHER" }
expert
en
57
57
cipher_museum
0.2
public
null
null
argenti-131
50 64 21 40 10 78 53 24 43 80 79 13 61
50 64 21 40 10 78 53 24 43 80 79 13 61
CHANGE OF PLANS
argenti
argenti
nomenclator
{ "type": "seed", "value": "SECRET" }
expert
en
26
38
cipher_museum
0.2
public
null
null
typex-192
NKLIDLAJUANMDLCB
NKLIDLAJUANMDLCB
CIPHER KEY CHANGED
typex
typex
machine
{ "type": "keyword", "value": "SECRET" }
expert
en
16
16
cipher_museum
0.2
public
null
null
argenti-v2-0275
64 29 69 33 11 61 39 58 65 33 71 44 36 65 20 39 22 33
64 29 69 33 11 61 39 58 65 33 71 44 36 65 20 39 22 33
LOOSE LIPS SINK SHIPS
argenti
argenti
nomenclator
{ "type": "seed", "value": "VATICAN" }
expert
en
36
53
cipher_museum
2.0
public
null
null
great-cipher-v3-0013
108 178 134 150 103 147 172 176 182 166 151 104 122
108 178 134 150 103 147 172 176 182 166 151 104 122
THE CASTLE IS SURROUNDED
great_cipher
great_cipher
nomenclator
{ "type": "seed", "value": "VERSAILLES" }
expert
en
39
51
cipher_museum
2.0
public
null
null
geez-monastic-107
ZOCUZUQUZUWUUWPJOUTPEUWKCLYOIOQPSSUCPTUCASORPXXSO
ZOCUZUQUZUWUUWPJOUTPEUWKCLYOIOQPSSUCPTUCASORPXXSO
VENI VIDI VICI I CAME I SAW I CONQUERED ALL IN A SINGLE BATTLE
geez_monastic
geez_monastic
substitution
{ "type": "keyword", "value": "CIPHER" }
advanced
en
49
49
cipher_museum
0.2
public
null
null
beaufort-153
JBLTRGEPIZRLGEIHJNJUKDEAUQKDEAUPXDTM
JBLTRGEPIZRLGEIHJNJUKDEAUQKDEAUPXDTM
THE ONLY THING WE HAVE TO FEAR IS FEAR ITSELF
beaufort
beaufort
polyalphabetic
{ "type": "keyword", "value": "CIPHER" }
intermediate
en
36
36
cipher_museum
0.2
public
null
null
fractionated-morse-088
AITVJITXBSPBCTSA
AITVJITXBSPBCTSA
EVACUATE THE BASE
fractionated_morse
fractionated_morse
fractionation
{ "type": "keyword", "value": "CIPHER" }
advanced
en
16
16
cipher_museum
0.2
public
null
null
nihilist-v2-0051
63 43 58 69 46 50 55 34 69 56 56 38 33 25 57 59 47 50 66 54 67 79 55 29 36 55 69 56 64 30 36 46 88 59 55 30 43 56 69 59 27 46 65 66 86 59 56 46 64 56 56 78 27 30 52 55 59 78 35 30 43 43 78 67 48 57 54 56 69 59 24 57 36 55 75 66 28 49 65
63 43 58 69 46 50 55 34 69 56 56 38 33 25 57 59 47 50 66 54 67 79 55 29 36 55 69 56 64 30 36 46 88 59 55 30 43 56 69 59 27 46 65 66 86 59 56 46 64 56 56 78 27 30 52 55 59 78 35 30 43 43 78 67 48 57 54 56 69 59 24 57 36 55 75 66 28 49 65
RICHMOND HAS FALLEN OUR FORCES HAVE ENTERED THE CITY RESISTANCE IS ENDED INFORM THE PRESIDENT
nihilist
nihilist
fractionation
{ "polybius": "PALACE", "keyword": "BATTLE" }
advanced
en
158
236
cipher_museum
2.0
public
null
null
confederate-vigenere-v2-0589
HRZQFVLEYVNLCWUINEIGJQIOSEYCHAXTEYYVCZRERGPLZTEVPUAKPPRPHAMMZICQFOEYZLGNBLTJFVEST
HRZQFVLEYVNLCWUINEIGJQIOSEYCHAXTEYYVCZRERGPLZTEVPUAKPPRPHAMMZICQFOEYZLGNBLTJFVEST
FREQUENCY ANALYSIS EXPLOITS THE FACT THAT CERTAIN LETTERS APPEAR FAR MORE OFTEN IN ENGLISH TEXT
confederate_vigenere
confederate_vigenere
polyalphabetic
{ "type": "keyword", "value": "CAVALRY" }
intermediate
en
81
81
cipher_museum
2.0
public
null
null
two-square-v3-0086
ZEUKKNKZLEDGPUUKMHRTLLKZONPULQTYUNLPIZAONOYAAHHLVKUGOUTRPZEAPMNGUGAONOYAAHHLMBUTLF
ZEUKKNKZLEDGPUUKMHRTLLKZONPULQTYUNLPIZAONOYAAHHLVKUGOUTRPZEAPMNGUGAONOYAAHHLMBUTLF
ZERO KNOWLEDGE PROOFS ALLOW ONE PARTY TO PROVE KNOWLEDGE WITHOUT REVEALING THE KNOWLEDGE ITSELF
two_square
two_square
polygraphic
{ "key1": "PALACE", "key2": "BATTLE" }
advanced
en
82
82
cipher_museum
2.0
public
null
null
cda-0003545
NMEUIVYACKTELZIIVYFGLVLIDWMRUMBHSPTGAQHTQRTTJMGZXYWDHWSSCQWHIQFNMBVOGNWAIAEHHVEIIDMVLZIISJIZUQCJMGAIOMXEXEPFCISPPICHVVNIJFRGGYSZRIIUVYVVVVQOIZUNL
NMEUIVYACKTELZIIVYFGLVLIDWMRUMBHSPTGAQHTQRTTJMGZXYWDHWSSCQWHIQFNMBVOGNWAIAEHHVEIIDMVLZIISJIZUQCJMGAIOMXEXEPFCISPPICHVVNIJFRGGYSZRIIUVYVVVVQOIZUNL
DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY
autokey
autokey
null
{ "primer": "KEY" }
hard
en
145
145
synthetic_educational
null
null
[ "running_key_analysis", "index_of_coincidence" ]
Autokey: Vigenère where the plaintext extends the key — harder to Kasiski-attack.
purple-v2-0109
CSKMBFVAKUBYEJEEMXNBKTWFXXYACEGZPQMNXIUBDACKKOYUAMMBXWSONLBNZBIGKDGARDBHAFOAQCEEGACFZXTMYQJRDWTHZUMMQHHCGLBXTIKEGDPWBGYGXTSEAWCOMHSTCOHDTKGKKTWQTOOAGCRQHMTCWMXAVKLG
CSKMBFVAKUBYEJEEMXNBKTWFXXYACEGZPQMNXIUBDACKKOYUAMMBXWSONLBNZBIGKDGARDBHAFOAQCEEGACFZXTMYQJRDWTHZUMMQHHCGLBXTIKEGDPWBGYGXTSEAWCOMHSTCOHDTKGKKTWQTOOAGCRQHMTCWMXAVKLG
WE THEREFORE THE REPRESENTATIVES OF THE UNITED STATES OF AMERICA IN GENERAL CONGRESS ASSEMBLED APPEALING TO THE SUPREME JUDGE OF THE WORLD FOR THE RECTITUDE OF OUR INTENTIONS DO SOLEMNLY PUBLISH
purple
purple
machine
{ "type": "seed", "value": "TOKYO" }
expert
en
164
164
cipher_museum
2.0
public
null
null
nihilist-049
79 58 79 49 36 99 76 56 106 49 36 68 47 67 85 85 39 99 49 60 68 75 68 96 45 70 69 55 48 79 79 67 99 67 50 67 79 40 99 59 39 99 48 38 89 48 56 79 76 36 78 59 40 99 67
79 58 79 49 36 99 76 56 106 49 36 68 47 67 85 85 39 99 49 60 68 75 68 96 45 70 69 55 48 79 79 67 99 67 50 67 79 40 99 59 39 99 48 38 89 48 56 79 76 36 78 59 40 99 67
THE ART OF WAR IS OF VITAL IMPORTANCE TO THE STATE IT IS LIFE OR DEATH
nihilist
nihilist
fractionation
{ "polybius": "RUSSIAN", "keyword": "KEY" }
advanced
en
111
165
cipher_museum
0.2
public
null
null
playfair-v2-0870
PDBKEWRWGBWHEGTLTWYNLWYKBOGBZAMTZLTCORLBADRZTCDSOQMPEMSDMTOCOSUNDTENLBQTBOSOMTQZ
PDBKEWRWGBWHEGTLTWYNLWYKBOGBZAMTZLTCORLBADRZTCDSOQMPEMSDMTOCOSUNDTENLBQTBOSOMTQZ
RICHMOND HAS FALLEN OUR FORCES HAVE ENTERED THE CITY RESISTANCE IS ENDED INFORM THE PRESIDENT
playfair
playfair
polygraphic
{ "type": "keyword", "value": "WISDOM" }
intermediate
en
80
80
cipher_museum
2.0
public
null
null
trifid-v2-0467
UFEZYOPL+KOGZJSX+MBJTUQJIHBQOXQGEEWKEPQWAQRZYYCLIGQRFKL+EQYOJZDIMMKSUGIDAKLNEOMB
UFEZYOPL+KOGZJSX+MBJTUQJIHBQOXQGEEWKEPQWAQRZYYCLIGQRFKL+EQYOJZDIMMKSUGIDAKLNEOMB
THE BABINGTON PLOT TO ASSASSINATE QUEEN ELIZABETH WAS UNCOVERED BY FRANCIS WALSINGHAM IN TIME
trifid
trifid
fractionation
{ "type": "keyword", "value": "FREEDOM" }
advanced
en
80
80
cipher_museum
2.0
public
null
null
playfair-v3-0095
BTFACFLOEPIPATPWWAXY
BTFACFLOEPIPATPWWAXY
CROSS THE RUBICON NOW
playfair
playfair
polygraphic
{ "type": "keyword", "value": "FORTRESS" }
intermediate
en
20
20
cipher_museum
2.0
public
null
null
rail-fence-v2-0057
WWCLTUIOAHHLLPHONTTRTAAEUEWDLHEDIRRTDNSSAMCNWIOUNANAEAIOETFSITONHLNYBID
WWCLTUIOAHHLLPHONTTRTAAEUEWDLHEDIRRTDNSSAMCNWIOUNANAEAIOETFSITONHLNYBID
WITH MALICE TOWARD NONE WITH CHARITY FOR ALL LET US BIND UP THE NATIONS WOUNDS AND HEAL
rail_fence
rail_fence
transposition
{ "type": "integer", "value": 7 }
intermediate
en
71
71
cipher_museum
2.0
public
null
null
cda-0011986
chedy sheedy shedy otedy oxed ypchol ctaiin kaiiin cheol qokeedy ytedy ctaiin okal ctaiin oror qotedy otedy chol oror daral shal ypchol okedy cheol otol oxed otaiin qokeedy shedy choldaiin sharal choldaiin qokeedy okshy lkaiin shal okeedy ytaiin sharal qokal okal
chedy sheedy shedy otedy oxed ypchol ctaiin kaiiin cheol qokeedy ytedy ctaiin okal ctaiin oror qotedy otedy chol oror daral shal ypchol okedy cheol otol oxed otaiin qokeedy shedy choldaiin sharal choldaiin qokeedy okshy lkaiin shal okeedy ytaiin sharal qokal okal
THE ARCHITECTURE SHOULD MAKE MISUSE HARDER A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY
voynich_render
voynich_render
null
{}
hard
en
223
223
synthetic_educational
null
null
[ "statistical_analysis", "unsolved" ]
Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output.
cda-0003549
TMRTESHTSKASTBMHTLITHAIHEUDEBTEEEOEITTNLRTIYAVSTRCALOOTNPOIUTCABWENNPNIITPCHEERORLSIOUPERPAPAEHHEESBOCADAHBN
TMRTESHTSKASTBMHTLITHAIHEUDEBTEEEOEITTNLRTIYAVSTRCALOOTNPOIUTCABWENNPNIITPCHEERORLSIOUPERPAPAEHHEESBOCADAHBN
THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION
stager_route
stager_route
null
{ "cols": 9 }
hard
en
108
108
synthetic_educational
null
null
[ "column_count_search", "route_pattern_search" ]
Route (Stager) cipher: write into rectangle, read via alternating column route.
porta-v3-0580
WUUEYYBZGZYYPTZMOKVYUQYVIMBMUWBNSYWEBZQWUGOEJXRMUWLVDUCGQKRVVEUIWWNBNQPRKF
WUUEYYBZGZYYPTZMOKVYUQYVIMBMUWBNSYWEBZQWUGOEJXRMUWLVDUCGQKRVVEUIWWNBNQPRKF
CHARGE OF THE LIGHT BRIGADE INTO THE VALLEY OF DEATH RODE THE SIX HUNDRED BRAVE CAVALIERS
porta
porta
polyalphabetic
{ "type": "keyword", "value": "PAPAL" }
intermediate
en
74
74
cipher_museum
2.0
public
null
null
cda-0014731
20.5.11 2.25.3 9.7.2 6.12.8 9.11.6 19.35.9 12.32.6 16.5.11 18.25.7 6.23.7 16.41.7 17.13.9 8.7.15 20.23.2 19.33.10 13.37.9 5.42.10 19.25.8 12.10.8 17.9.13 2.18.12 14.22.2 20.43.3 15.49.14 2.25.2 8.10.4 10.21.13 8.44.9 7.41.8 12.44.10 20.7.2 14.1.2 11.4.6 18.31.2 10.15.6 6.30.8 6.6.4 12.45.3 6.50.7 5.47.2 14.44.10 4.6.6 ...
20.5.11 2.25.3 9.7.2 6.12.8 9.11.6 19.35.9 12.32.6 16.5.11 18.25.7 6.23.7 16.41.7 17.13.9 8.7.15 20.23.2 19.33.10 13.37.9 5.42.10 19.25.8 12.10.8 17.9.13 2.18.12 14.22.2 20.43.3 15.49.14 2.25.2 8.10.4 10.21.13 8.44.9 7.41.8 12.44.10 20.7.2 14.1.2 11.4.6 18.31.2 10.15.6 6.30.8 6.6.4 12.45.3 6.50.7 5.47.2 14.44.10 4.6.6 ...
GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN
book_cipher
book_cipher
null
{}
hard
en
127
127
synthetic_educational
null
null
[ "book_cipher_attack", "triple_index_search" ]
Book cipher: coordinates (page.line.word) referencing a shared document.
autokey-v3-0535
MYMMUTNXIIYQRY
MYMMUTNXIIYQRY
THE SIEGE BEGINS
autokey
autokey
polyalphabetic
{ "type": "keyword", "value": "TRIUMPH" }
intermediate
en
14
14
cipher_museum
2.0
public
null
null
cda-0018596
17.33.7 12.6.13 9.28.3 11.42.8 8.45.14 20.18.7 5.14.5 18.34.6 6.33.5 3.1.15 14.9.9 6.46.4 15.49.4 6.2.5 18.5.3 2.42.14 16.10.10 17.33.4 7.49.14 17.31.2 8.15.8 4.48.8 11.13.1 3.29.6 9.26.1 10.14.4 7.5.9 14.10.3 2.14.4 3.39.7 14.34.3 7.43.14 13.29.4 3.43.13 1.35.11 17.2.6 14.35.5 18.6.4 7.29.2 10.40.9 4.21.10 15.36.13 14...
17.33.7 12.6.13 9.28.3 11.42.8 8.45.14 20.18.7 5.14.5 18.34.6 6.33.5 3.1.15 14.9.9 6.46.4 15.49.4 6.2.5 18.5.3 2.42.14 16.10.10 17.33.4 7.49.14 17.31.2 8.15.8 4.48.8 11.13.1 3.29.6 9.26.1 10.14.4 7.5.9 14.10.3 2.14.4 3.39.7 14.34.3 7.43.14 13.29.4 3.43.13 1.35.11 17.2.6 14.35.5 18.6.4 7.29.2 10.40.9 4.21.10 15.36.13 14...
THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY
book_cipher
book_cipher
null
{}
hard
en
95
95
synthetic_educational
null
null
[ "book_cipher_attack", "triple_index_search" ]
Book cipher: coordinates (page.line.word) referencing a shared document.
sigaba-v3-0402
BBILIKMVPHLJIZXPIHRJDJOEGUHVLUELUTSCCQMFSWNNTXPEHHXUGTRIGOCGDSIMMCDZMRBEAPCUQT
BBILIKMVPHLJIZXPIHRJDJOEGUHVLUELUTSCCQMFSWNNTXPEHHXUGTRIGOCGDSIMMCDZMRBEAPCUQT
THE BIRTHDAY PARADOX SHOWS THAT COLLISIONS IN HASH FUNCTIONS OCCUR FAR SOONER THAN EXPECTED
sigaba
sigaba
machine
{ "type": "seed", "value": "LIBERTY" }
expert
en
78
78
cipher_museum
2.0
public
null
null
columnar-transposition-vf-0024
TTOTWEDEOHTABNRLNIBSTSNESOOTIALLORIIDTNNHHUHIXFRTIHLEEWTELPOEHDALKULDEEEHNGNHTW
TTOTWEDEOHTABNRLNIBSTSNESOOTIALLORIIDTNNHHUHIXFRTIHLEEWTELPOEHDALKULDEEEHNGNHTW
THE TRUTH WILL OUT AND THE LIE WILL BE EXPOSED FOR THERE IS NOTHING HIDDEN THAT SHALL NOT BE KNOWN
columnar_transposition
columnar_transposition
transposition
{ "type": "keyword", "value": "CIPHER" }
intermediate
en
79
79
cipher_museum
2.0
public
null
null
vigenere-vf-0005
ELQANELQANEMOWNYWAZIPWFVRCMPRYP
ELQANELQANEMOWNYWAZIPWFVRCMPRYP
THE MATHEMATICIAN SOLVES THE RIDDLE
vigenere
vigenere
polyalphabetic
{ "type": "keyword", "value": "LEMON" }
intermediate
en
31
31
cipher_museum
2.0
public
null
null
chaocipher-219
VSEAHXHEIZRPNRGNCMFLUPJDEYTZFNNARKCCQYQPWJL
VSEAHXHEIZRPNRGNCMFLUPJDEYTZFNNARKCCQYQPWJL
FORTUNE FAVORS THE BOLD AND THE BRAVE WHO DARE TO ACT
chaocipher
chaocipher
machine
{ "type": "keyword", "value": "MUSEUM" }
advanced
en
43
43
cipher_museum
0.2
public
null
null
four-square-136
ORPUPLLLME
ORPUPLLLME
TRUST NO ONE
four_square
four_square
polygraphic
{ "key1": "SECRET", "key2": "AGENTS" }
advanced
en
10
10
cipher_museum
0.2
public
null
null
cda-0020260
. .... ... .... .... ..... . .. ... . . ..... .... .... .... .. . . ... ... .... ... ... ..... ... .... .... ... .. .... .... .... .. .... ... .... ... ... . . ... ..... ... ..... ... . .. .... . ..... .... ... . ... ... .... ... . .... ..... ... .. ... ... . . .... .. . ..... ... ......
. .... ... .... .... ..... . .. ... . . ..... .... .... .... .. . . ... ... .... ... ... ..... ... .... .... ... .. .... .... .... .. .... ... .... ... ... . . ... ..... ... ..... ... . .. .... . ..... .... ... . ... ... .... ... . .... ..... ... .. ... ... . . .... .. . ..... ... ......
DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS
tap_code
tap_code
null
{}
hard
en
95
95
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.
porta-v2-0567
UJKOMWJMQHATWKWWCGCRZEZULWXPPDYPXMFLQEKMHKWSMBWINGWKWTRRTDYKDNWNQGGEJNCNLP
UJKOMWJMQHATWKWWCGCRZEZULWXPPDYPXMFLQEKMHKWSMBWINGWKWTRRTDYKDNWNQGGEJNCNLP
FOR GOD SO LOVED THE WORLD THAT HE GAVE HIS ONLY SON THAT WHOEVER BELIEVES SHALL NOT PERISH
porta
porta
polyalphabetic
{ "type": "keyword", "value": "FLORENT" }
intermediate
en
74
74
cipher_museum
2.0
public
null
null
columnar-transposition-v2-0935
FEMOTGYFHIOPOWTCHIEGYRDTERRNTSGEROVAYAARFHEETNDBACELIMSEGGULODLNNCRIRSVSMUT
FEMOTGYFHIOPOWTCHIEGYRDTERRNTSGEROVAYAARFHEETNDBACELIMSEGGULODLNNCRIRSVSMUT
ENEMY FORCES REPORTED MOVING TOWARD GETTYSBURG CAVALRY HAS CONFIRMED THE FULL SIGHTING
columnar_transposition
columnar_transposition
transposition
{ "type": "keyword", "value": "JUSTICE" }
intermediate
en
75
75
cipher_museum
2.0
public
null
null
four-square-v2-0054
APNWIGSGEONSKNLBARMSUTTRHTQAOOLCLINMEFTNNFFDQLLQINTULUBNLOETFSDNOEQATGZBNMXW
APNWIGSGEONSKNLBARMSUTTRHTQAOOLCLINMEFTNNFFDQLLQINTULUBNLOETFSDNOEQATGZBNMXW
ARMY OF THE POTOMAC CROSSES THE RAPPAHANNOCK TONIGHT ABSOLUTE SILENCE IS IMPERATIVE NOW
four_square
four_square
polygraphic
{ "key1": "PALACE", "key2": "BATTLE" }
advanced
en
76
76
cipher_museum
2.0
public
null
null
two-square-v2-0362
SBRGNNOASHIRFN
SBRGNNOASHIRFN
TARGET ACQUIRED
two_square
two_square
polygraphic
{ "key1": "DRAGON", "key2": "THUNDER" }
advanced
en
14
14
cipher_museum
2.0
public
null
null
cda-0016335
838 842 810 814 853 841 999 814 840 808 853 874 847 858 824 842 839 999 825 855 999 841 842 859 999 804 853 842 830 813 839 999 805 873 999 835 814 857 858 812 851 999 817 851 813 849 861 814 839 806 873 999 857 822 812 999 837 812 856 855 801 820 813 999 868 802 855 999 823 826 810 809 812 840 999 804 861 859 999 840 ...
838 842 810 814 853 841 999 814 840 808 853 874 847 858 824 842 839 999 825 855 999 841 842 859 999 804 853 842 830 813 839 999 805 873 999 835 814 857 858 812 851 999 817 851 813 849 861 814 839 806 873 999 857 822 812 999 837 812 856 855 801 820 813 999 868 802 855 999 823 826 810 809 812 840 999 804 861 859 999 840 ...
MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY THE MESSAGE WAS HIDDEN BUT NOT SECURE PERHAPS
culper_ring
culper_ring
null
{}
hard
en
82
82
synthetic_educational
null
null
[ "codebook_frequency", "number_range_analysis" ]
Culper Ring code: Washington's three-digit codebook numbers (800–999 range).
caesar-de-121
LQ GLHVHU VWXQGH HUNODUH LFK GLH IHLQGVHOLJNHLWHQ IXU EHHQGHW
LQ GLHVHU VWXQGH HUNODUH LFK GLH IHLQGVHOLJNHLWHQ IXU EHHQGHW
IN DIESER STUNDE ERKLARE ICH DIE FEINDSELIGKEITEN FUR BEENDET
caesar
caesar
substitution
{ "type": "shift", "value": 3 }
beginner
de
53
61
cipher_museum
0.2
public
null
null
chaocipher-080
LQFKHZOFYRSIEXDIU
LQFKHZOFYRSIEXDIU
CRYPTOGRAPHY RULES
chaocipher
chaocipher
machine
{ "type": "keyword", "value": "CIPHER" }
advanced
en
17
17
cipher_museum
0.2
public
null
null
cardano-autokey-v3-0221
KALGCSLEPMAKMLIFIHQHH
KALGCSLEPMAKMLIFIHQHH
THE CASTLE IS SURROUNDED
cardano_autokey
cardano_autokey
polyalphabetic
{ "type": "keyword", "value": "ROME" }
advanced
en
21
21
cipher_museum
2.0
public
null
null
cda-0018290
06312 02532 01626 00724 01660 6029 6294 03782 1572 05998 6006 04772 4430 06002 06030 02557 04808 7302 7307 02565 1600 5653 1654 06298 2537 1655 4098 01649 06374 02542 04797 01274 01923 0323 2862 3837 6004
06312 02532 01626 00724 01660 6029 6294 03782 1572 05998 6006 04772 4430 06002 06030 02557 04808 7302 7307 02565 1600 5653 1654 06298 2537 1655 4098 01649 06374 02542 04797 01274 01923 0323 2862 3837 6004
THE BEST LESSONS SHOW WHERE THE METHOD FAILS
zimmermann
zimmermann
null
{}
medium
en
37
37
synthetic_educational
null
null
[ "codebook_frequency", "number_group_analysis" ]
Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher.
geez-monastic-015
EBTMPOHESGTQHSK
EBTMPOHESGTQHSK
OPERATION BEGINS
geez_monastic
geez_monastic
substitution
{ "type": "keyword", "value": "GEEZ" }
advanced
en
15
15
cipher_museum
0.2
public
null
null
solitaire-v3-0245
OUEMJQUWPXDUMTDWGLZ
OUEMJQUWPXDUMTDWGLZ
THE TELESCOPE REVEALS
solitaire
solitaire
stream
{ "type": "passphrase", "value": "PONTIFEX" }
expert
en
19
19
cipher_museum
2.0
public
null
null
red-type-a-v3-0108
MTOMUHOEKPWNIDRXYYWA
MTOMUHOEKPWNIDRXYYWA
THE LEGIONS STAND READY
red_type_a
red_type_a
machine
{ "type": "keyword", "value": "YAMATO" }
advanced
en
20
20
cipher_museum
2.0
public
null
null
cda-0014769
82 80 80 69 80 52 69 80 80 82 52 66 50 69 29 68 29 11 11 82 66 82 52 66 50 69 29 68 80 82 76 59 29 11 68 77 82 29 66 68 57 66 69 61 82 52 59 80 82 61 43 61 66 82 77 61
82 80 80 69 80 52 69 80 80 82 52 66 50 69 29 68 29 11 11 82 66 82 52 66 50 69 29 68 80 82 76 59 29 11 68 77 82 29 66 68 57 66 69 61 82 52 59 80 82 61 43 61 66 82 77 61
ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS
wallis_cipher
wallis_cipher
null
{}
medium
en
56
56
synthetic_educational
null
null
[ "number_substitution_decode", "frequency_analysis" ]
Wallis cipher: each letter mapped to a unique two-digit number from a fixed table.
typex-v3-0173
ARCALKHEVVYEKORAIZADDDQZCNSFNRQHSSTLHYJDUNHMZUKRKXFFVMXGOKZEOJMXGVAMJFCFIQQPGBWYY
ARCALKHEVVYEKORAIZADDDQZCNSFNRQHSSTLHYJDUNHMZUKRKXFFVMXGOKZEOJMXGVAMJFCFIQQPGBWYY
DARWIN OBSERVED THAT SPECIES EVOLVE THROUGH NATURAL SELECTION OVER VAST SPANS OF GEOLOGIC TIME
typex
typex
machine
{ "type": "keyword", "value": "BRITAIN" }
expert
en
81
81
cipher_museum
2.0
public
null
null
typex-027
CUTBJBKDVCTH
CUTBJBKDVCTH
THE TRAP IS SET
typex
typex
machine
{ "type": "keyword", "value": "TYPEX" }
expert
en
12
12
cipher_museum
0.2
public
null
null
kryha-v3-0055
VXLLAUEUPQUMSCAKFCFJLRLBCRXEBWHQUQJHKBGSTFPUGHZBXGRPSBTFTNFLICIXTACOKDXRBIZFJW
VXLLAUEUPQUMSCAKFCFJLRLBCRXEBWHQUQJHKBGSTFPUGHZBXGRPSBTFTNFLICIXTACOKDXRBIZFJW
SCIENCE WITHOUT RELIGION IS LAME AND RELIGION WITHOUT SCIENCE IS BLIND SAID ALBERT EINSTEIN
kryha
kryha
machine
{ "type": "keyword", "value": "MUNICH" }
expert
en
78
78
cipher_museum
2.0
public
null
null
kryptos-v3-0202
PFQYLTAHEAXUZAFQALWIJXEBLOKULEXDXFFNFHNXKSOEAXBJPREAMFXJUGXZQVCKMKSRTAUFOXGKNUFSYGVTVYKSYCOYJWXRVUREAXDLJXXDIYQCBXHJVTQYHFWNVBOHDTTJCDLVHXGWDEXOYMURVJYBYJYHQGYT
PFQYLTAHEAXUZAFQALWIJXEBLOKULEXDXFFNFHNXKSOEAXBJPREAMFXJUGXZQVCKMKSRTAUFOXGKNUFSYGVTVYKSYCOYJWXRVUREAXDLJXXDIYQCBXHJVTQYHFWNVBOHDTTJCDLVHXGWDEXOYMURVJYBYJYHQGYT
FOR I KNOW THE THOUGHTS THAT I THINK TOWARD YOU SAITH THE LORD THOUGHTS OF PEACE AND NOT OF EVIL TO GIVE YOU AN EXPECTED END THEN SHALL YE CALL UPON ME AND YE SHALL GO AND PRAY UNTO ME AND I WILL HEARKEN
kryptos
kryptos
polyalphabetic
{ "type": "keyword", "value": "LANGLEY" }
advanced
en
160
160
cipher_museum
2.0
public
null
null
hill-207
MJZLHIVIOGZL
MJZLHIVIOGZL
THE TRAP IS SET
hill
hill
polygraphic
{ "a": 5, "b": 3, "c": 2, "d": 7 }
advanced
en
12
12
cipher_museum
0.2
public
null
null
purple-v3-0279
RATLJWCCRUEEOYNZLHBIPXJZTGJZWKYZJAFZOERLWASWVBEXEEHAUKNSSYJUVUXVUWWWKDBPXDU
RATLJWCCRUEEOYNZLHBIPXJZTGJZWKYZJAFZOERLWASWVBEXEEHAUKNSSYJUVUXVUWWWKDBPXDU
NEWTON SAW THE APPLE FALL AND INTUITED THE SAME FORCE THAT HOLDS THE PLANETS IN THEIR PATHS
purple
purple
machine
{ "type": "seed", "value": "SAKURA" }
expert
en
75
75
cipher_museum
2.0
public
null
null
cda-0016793
BAABA AABBB AABAA AABAA ABBAA ABAAA AABBA ABABB AAAAA ABABB AAAAA AAABA AABBB ABAAA ABBAA AABAA BAABB BAAAB AABAA AAABB BAAAA ABBAB BAABA ABBAB BAAAA BAAAB BAABA ABBAB AAABA BAAAA AABAA AAAAA BAABA AABAA AAAAA ABBBA ABBAB ABABA BABBA AAAAA ABABA ABBBA AABBB AAAAA AAAAB AABAA BAABA ABAAA AAABA AAABA ABAAA ABBBA AABBB AA...
BAABA AABBB AABAA AABAA ABBAA ABAAA AABBA ABABB AAAAA ABABB AAAAA AAABA AABBB ABAAA ABBAA AABAA BAABB BAAAB AABAA AAABB BAAAA ABBAB BAABA ABBAB BAAAA BAAAB BAABA ABBAB AAABA BAAAA AABAA AAAAA BAABA AABAA AAAAA ABBBA ABBAB ABABA BABBA AAAAA ABABA ABBBA AABBB AAAAA AAAAB AABAA BAABA ABAAA AAABA AAABA ABAAA ABBBA AABBB AA...
THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER
bacon_cipher
bacon_cipher
null
{}
hard
en
275
275
synthetic_educational
null
null
[ "five_bit_decode", "ab_frequency_analysis" ]
Bacon's biliteral cipher: each letter encoded as 5-bit A/B string.
nihilist-v3-0066
65 37 59 87 24 30 36 34 79 67 26 46 45 37 88 75 56 59 46 27 89 57 57 46 54 24 88 59 56 26 36 27 66 57 44 48 52 56 75 78 57 40 36 57 78 75 64 30 63 55 59 59 44 49 64 56 59 75 47 37 36 45 79 78 56 59 63 24 88 59 35 59 46 43 87
65 37 59 87 24 30 36 34 79 67 26 46 45 37 88 75 56 59 46 27 89 57 57 46 54 24 88 59 56 26 36 27 66 57 44 48 52 56 75 78 57 40 36 57 78 75 64 30 63 55 59 59 44 49 64 56 59 75 47 37 36 45 79 78 56 59 63 24 88 59 35 59 46 43 87
THE SPEED OF LIGHT IS THE ULTIMATE SPEED LIMIT IN THE UNIVERSE EINSTEIN DEMONSTRATED THIS
nihilist
nihilist
fractionation
{ "polybius": "PALACE", "keyword": "BATTLE" }
advanced
en
150
224
cipher_museum
2.0
public
null
null
alberti-disk-v2-0087
CSCRMNLTQGDQFTPMULPCTKUILFOUXQLCXQITZNHRWBHWESRNVOKLPEYRXLXANXQPBVZMGWPOYCVA
CSCRMNLTQGDQFTPMULPCTKUILFOUXQLCXQITZNHRWBHWESRNVOKLPEYRXLXANXQPBVZMGWPOYCVA
ALAN TURING AND GORDON WELCHMAN BUILT THE BOMBE TO ATTACK THE GERMAN ENIGMA CIPHER MACHINE
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 4 }
expert
en
76
76
cipher_museum
2.0
public
null
null
wheatstone-v2-0241
YASTARDLYDANAJOARSAVAKTEKFKATAAKBMRTYMKALDLTAWEFNEWFIIIFVAFKFKBLJYTEAUKFTADSTLTASMBLJARFNLWLSSUDDAKIYLKDDAIFOARLTAIYLTTLNHADOYKLVLILKDLFRBMRNASMBTEAAJPFRAMBGLPLK
YASTARDLYDANAJOARSAVAKTEKFKATAAKBMRTYMKALDLTAWEFNEWFIIIFVAFKFKBLJYTEAUKFTADSTLTASMBLJARFNLWLSSUDDAKIYLKDDAIFOARLTAIYLTTLNHADOYKLVLILKDLFRBMRNASMBTEAAJPFRAMBGLPLK
YESTERDAY DECEMBER SEVENTH NINETEEN FORTY ONE A DATE WHICH WILL LIVE IN INFAMY THE UNITED STATES OF AMERICA WAS SUDDENLY AND DELIBERATELY ATTACKED BY NAVAL AND AIR FORCES OF THE EMPIRE OF JAPAN
wheatstone
wheatstone
polygraphic
{ "type": "keyword", "value": "LONDON" }
advanced
en
161
161
cipher_museum
2.0
public
null
null
lorenz-120
FLEEATONCE
FLEEATONCE
FLEE AT ONCE
lorenz
lorenz
machine
{ "type": "seed", "value": "SECRET" }
expert
en
10
10
cipher_museum
0.2
public
null
null
nomenclator-v3-0107
18 15 13 05 23 01 19 14 15 20 02 21 09 12 20 64 15 14 05 04 01 25
18 15 13 05 23 01 19 14 15 20 02 21 09 12 20 64 15 14 05 04 01 25
ROME WAS NOT BUILT IN ONE DAY
nomenclator
nomenclator
nomenclator
{ "type": "seed", "value": "PALACE" }
expert
en
44
65
cipher_museum
2.0
public
null
null
babington-v2-0012
⟨w16⟩ ⟨a13⟩ ⟨w21⟩ ⟨w06⟩ ⟨a12⟩ ⟨a10⟩ ⟨a07⟩ ⟨a11⟩ ⟨a11⟩ ⟨a07⟩ ⟨w29⟩ ⟨w22⟩
⟨w16⟩ ⟨a13⟩ ⟨w21⟩ ⟨w06⟩ ⟨a12⟩ ⟨a10⟩ ⟨a07⟩ ⟨a11⟩ ⟨a11⟩ ⟨a07⟩ ⟨w29⟩ ⟨w22⟩
PRESS THE ATTACK
babington
babington
nomenclator
{ "type": "seed", "value": "ELIZABETH" }
expert
en
60
71
cipher_museum
2.0
public
null
null
atbash-v3-0071
MVDGLM HZD GSV ZKKOV UZOO ZMW RMGFRGVW GSV HZNV ULIXV GSZG SLOWH GSV KOZMVGH RM GSVRI KZGSH
MVDGLM HZD GSV ZKKOV UZOO ZMW RMGFRGVW GSV HZNV ULIXV GSZG SLOWH GSV KOZMVGH RM GSVRI KZGSH
NEWTON SAW THE APPLE FALL AND INTUITED THE SAME FORCE THAT HOLDS THE PLANETS IN THEIR PATHS
atbash
atbash
substitution
{ "type": "none", "value": null }
beginner
en
75
91
cipher_museum
2.0
public
null
null
nihilist-v3-0120
55 48 37 29 46 63 68 45 66 55 48 66 84 88 72
55 48 37 29 46 63 68 45 66 55 48 66 84 88 72
CHART THE UNKNOWN
nihilist
nihilist
fractionation
{ "polybius": "LIBERTY", "keyword": "FREEDOM" }
advanced
en
30
44
cipher_museum
2.0
public
null
null
kl7-v3-0037
SZYKDFBXSZBBIWKGMHB
SZYKDFBXSZBBIWKGMHB
THE TELESCOPE REVEALS
kl7
kl7
machine
{ "type": "seed", "value": "NATO" }
expert
en
19
19
cipher_museum
2.0
public
null
null
rail-fence-es-058
CMRNUSDEMSLLEAAORETAAOQEEUREEOLVLCRINE
CMRNUSDEMSLLEAAORETAAOQEEUREEOLVLCRINE
CAMARON QUE SE DUERME SE LO LLEVA LA CORRIENTE
rail_fence
rail_fence
transposition
{ "type": "shift", "value": 2 }
intermediate
es
38
38
cipher_museum
0.2
public
null
null
cda-0020192
┐· ┘· └ ⌒· ¬ Γ· X· X L ─ r ┘· Γ L Γ └ L K K L ┌· X ⌐ X ┐· ⌐ Γ· ┌· X ┘· ⌐· ─ X· ┌ ¬ L ┌· X ⌐· ┌· ┘· ┌ ┘· ─ L K ┘· ⌐· Γ· K· L K ┌· ⌐ ─ X ┐· ┘· X Γ· K Γ· ┘· ─ r Γ· ┐· r· L ┌· X ┌· L ⌐ ┌· ┌· ⌐ ─ ¬· L └ L K K L ┌· X ⌒ Γ· K r· ┘· X· K X X· ¬ X K Γ· K X· K Γ· ┘· ─ ⌐· ┌· L └· X· L ─ r ⌒· ⌐ ─ ⌐ └ ⌒· X Γ· X r ⌐ ─ ┌· L K· L ⌐ └ ⌒...
┐· ┘· └ ⌒· ¬ Γ· X· X L ─ r ┘· Γ L Γ └ L K K L ┌· X ⌐ X ┐· ⌐ Γ· ┌· X ┘· ⌐· ─ X· ┌ ¬ L ┌· X ⌐· ┌· ┘· ┌ ┘· ─ L K ┘· ⌐· Γ· K· L K ┌· ⌐ ─ X ┐· ┘· X Γ· K Γ· ┘· ─ r Γ· ┐· r· L ┌· X ┌· L ⌐ ┌· ┌· ⌐ ─ ¬· L └ L K K L ┌· X ⌒ Γ· K r· ┘· X· K X X· ¬ X K Γ· K X· K Γ· ┘· ─ ⌐· ┌· L └· X· L ─ r ⌒· ⌐ ─ ⌐ └ ⌒· X Γ· X r ⌐ ─ ┌· L K· L ⌐ └ ⌒...
POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS PERHAPS
pigpen
pigpen
null
{}
medium
en
63
63
synthetic_educational
null
null
[ "symbol_frequency", "grid_position_decode" ]
Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids.
cda-0005069
TGEES EGORK AARCE HENIU RTEDX YIESP EVIRH EPNWX
TGEES EGORK AARCE HENIU RTEDX YIESP EVIRH EPNWX
THE VIGENERE CIPHER USES A REPEATING KEYWORD
stager_route
stager_route
null
{ "cols": 5 }
medium
en
40
40
synthetic_educational
null
null
[ "column_count_search", "route_pattern_search" ]
Route (Stager) cipher: write into rectangle, read via alternating column route.
cda-0011395
EOVUS UETMJ CFDRG JDTWK NVEKR XIOCG MXZYQ KEEUB BUQZD VFJOB BHSBR RWYAY MWYEM FZDWR FVIGQ JLZRU TDRXV VARDT AAFTQ UKVIG QJLRI OMHCT XKMAN ZZBHR EEXNM ZKYDT SDCWM TTDQC RPZPF NFKAH H
EOVUS UETMJ CFDRG JDTWK NVEKR XIOCG MXZYQ KEEUB BUQZD VFJOB BHSBR RWYAY MWYEM FZDWR FVIGQ JLZRU TDRXV VARDT AAFTQ UKVIG QJLRI OMHCT XKMAN ZZBHR EEXNM ZKYDT SDCWM TTDQC RPZPF NFKAH H
ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION FAIL CLOSED IS A POSTURE NOT A SLOGAN COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION
trithemius
trithemius
null
{}
hard
en
151
151
synthetic_educational
null
null
[]
wheatstone-v2-0310
KAVAPEKSDANEAHTLNDUJBKILKNHEISWBQQLJUIDLWATRYQLJBKYSLQLNAWRPBVAQLUHQ
KAVAPEKSDANEAHTLNDUJBKILKNHEISWBQQLJUIDLWATRYQLJBKYSLQLNAWRPBVAQLUHQ
NEVER IN THE FIELD OF HUMAN CONFLICT WAS SO MUCH OWED BY SO MANY TO SO FEW BRAVE SOULS
wheatstone
wheatstone
polygraphic
{ "type": "keyword", "value": "BRITAIN" }
advanced
en
68
68
cipher_museum
2.0
public
null
null
hill-279
BAGNXBBXBLBBNPRAZSOFNNMLRAOBBLIWPEVGJUVCKGOD
BAGNXBBXBLBBNPRAZSOFNNMLRAOBBLIWPEVGJUVCKGOD
FORTUNE FAVORS THE BOLD AND THE BRAVE WHO DARE TO ACT
hill
hill
polygraphic
{ "a": 7, "b": 5, "c": 2, "d": 3 }
advanced
en
44
44
cipher_museum
0.2
public
null
null
monoalphabetic-v2-0801
QABP JULVI JGG QL QABKI LWK PIGC UI QORI JKT BQ HRPQ CLGGLW JP KBEAQ QAI TJY
QABP JULVI JGG QL QABKI LWK PIGC UI QORI JKT BQ HRPQ CLGGLW JP KBEAQ QAI TJY
THIS ABOVE ALL TO THINE OWN SELF BE TRUE AND IT MUST FOLLOW AS NIGHT THE DAY
monoalphabetic
monoalphabetic
substitution
{ "type": "keyword", "value": "JUSTICE" }
beginner
en
60
76
cipher_museum
2.0
public
null
null
copiale-v3-0070
R5 Y0 N2 S3 O1 O8 C1 X2 C3 S3 V4 Y6 L5 Q8 N6 P6 T7 H2 K8 O1 O5 P3 K0 X0 X2 K8 B5 S6 T9 N6 T2 T4 T2 A4 C8 O8 D0 P3 B8 I6 T1 K0 C1 D2 K3 B6 U6 G7 K4 B2 G6 N6 A5 A9 T9 M9 R1 O5 A4 K7 T9 M9 U4 T0 C4 S3 H2 N3 T9 L0 M8 N3 X7 M2
R5 Y0 N2 S3 O1 O8 C1 X2 C3 S3 V4 Y6 L5 Q8 N6 P6 T7 H2 K8 O1 O5 P3 K0 X0 X2 K8 B5 S6 T9 N6 T2 T4 T2 A4 C8 O8 D0 P3 B8 I6 T1 K0 C1 D2 K3 B6 U6 G7 K4 B2 G6 N6 A5 A9 T9 M9 R1 O5 A4 K7 T9 M9 U4 T0 C4 S3 H2 N3 T9 L0 M8 N3 X7 M2
GALILEO POINTED HIS TELESCOPE AT THE HEAVENS AND CONFIRMED THAT THE EARTH ORBITS THE SUN
copiale
copiale
substitution
{ "type": "keyword", "value": "MASONIC" }
advanced
en
148
221
cipher_museum
2.0
public
null
null
columnar-transposition-v2-0452
ETNIDBOTTSHNTYOPKNLFEUNHPNOBILUNNCEETRARFHTCORMIECEAAROOEOAREGWLGTRIESNTFHILT
ETNIDBOTTSHNTYOPKNLFEUNHPNOBILUNNCEETRARFHTCORMIECEAAROOEOAREGWLGTRIESNTFHILT
RECONNOITER THE ENEMY POSITION AND REPORT BACK BEFORE NIGHTFALL WITH A FULL STRENGTH COUNT
columnar_transposition
columnar_transposition
transposition
{ "type": "keyword", "value": "WARRIOR" }
intermediate
en
77
77
cipher_museum
2.0
public
null
null
geez-monastic-v2-0233
YOXFAPOFTZSBATLTSWTZFAZVOOXFYZIJTFARFOXVJIYOFIJOSIJEAPOSIESTSIZSTMSZIEOSPOSPTELTBESHERTFIWZSBBTBEPZITBIOIJTCFOCOAEIEOSIJZIZHHQTSZFTPFTZITBTNXZH
YOXFAPOFTZSBATLTSWTZFAZVOOXFYZIJTFARFOXVJIYOFIJOSIJEAPOSIESTSIZSTMSZIEOSPOSPTELTBESHERTFIWZSBBTBEPZITBIOIJTCFOCOAEIEOSIJZIZHHQTSZFTPFTZITBTNXZH
FOURSCORE AND SEVEN YEARS AGO OUR FATHERS BROUGHT FORTH ON THIS CONTINENT A NEW NATION CONCEIVED IN LIBERTY AND DEDICATED TO THE PROPOSITION THAT ALL MEN ARE CREATED EQUAL
geez_monastic
geez_monastic
substitution
{ "type": "keyword", "value": "AXUM" }
advanced
en
143
143
cipher_museum
2.0
public
null
null
caesar-v2-1660
AFSFAB XKA ZLKNRBO
AFSFAB XKA ZLKNRBO
DIVIDE AND CONQUER
caesar
caesar
substitution
{ "type": "shift", "value": 23 }
beginner
en
16
18
cipher_museum
2.0
public
null
null
two-square-v3-0171
ONGNCKONNTELIHHRQMEOBURARIYHNVQIWRONNTERADPTIOOMQFDKCKAQBQNRELECYFSIEADDFGZHEACSIONS
ONGNCKONNTELIHHRQMEOBURARIYHNVQIWRONNTERADPTIOOMQFDKCKAQBQNRELECYFSIEADDFGZHEACSIONS
SIGNALS INTELLIGENCE OR SIGINT INVOLVES INTERCEPTION AND ANALYSIS OF ELECTRONIC COMMUNICATIONS
two_square
two_square
polygraphic
{ "key1": "LIBERTY", "key2": "FREEDOM" }
advanced
en
84
84
cipher_museum
2.0
public
null
null
diana-v3-0556
DDSYAJGFXDIIURRUHI
DDSYAJGFXDIIURRUHI
GRAVITY EXPLAINS ALL
diana
diana
polyalphabetic
{ "type": "keyword", "value": "JUSTICE" }
intermediate
en
18
18
cipher_museum
2.0
public
null
null
caesar-v2-1194
QADDS HLTPI PCS ITPGH IWTHT PGT LWPI X DUUTG NDJ UDG IWT STUTCHT DU DJG XHAPCS CPIXDC
QADDS HLTPI PCS ITPGH IWTHT PGT LWPI X DUUTG NDJ UDG IWT STUTCHT DU DJG XHAPCS CPIXDC
BLOOD SWEAT AND TEARS THESE ARE WHAT I OFFER YOU FOR THE DEFENSE OF OUR ISLAND NATION
caesar
caesar
substitution
{ "type": "shift", "value": 15 }
beginner
en
69
85
cipher_museum
2.0
public
null
null
cda-0005973
PNDS ATRE EAOF AOST RNTD VTNO EAUN SIER REHI ELMT TEEN DLYC VOOL ONLE EEPC MEHN SOIT IEDN WESS OY
PNDS ATRE EAOF AOST RNTD VTNO EAUN SIER REHI ELMT TEEN DLYC VOOL ONLE EEPC MEHN SOIT IEDN WESS OY
OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION EVERY SYSTEM NEEDS AN HONEST THREAT MODEL
double_transposition
double_transposition
null
{ "key1": "CIPHER", "key2": "SIGNAL" }
medium
en
78
78
synthetic_educational
null
null
[ "key_length_search", "anagram_recovery" ]
Double columnar transposition: apply columnar twice for stronger security.
beaufort-de-011
XRLZXNUPJWAJABIDWYBRVEAARANAUNUP
XRLZXNUPJWAJABIDWYBRVEAARANAUNUP
FREIHEIT GLEICHHEIT BRUDERLICHKEIT
beaufort
beaufort
polyalphabetic
{ "type": "keyword", "value": "CIPHER" }
intermediate
de
32
32
cipher_museum
0.2
public
null
null
bifid-v2-0446
SOIMRBLERRGCFMFRVFMFUKHHEBRFQLAFIBLDHMRUMPNMEMGYLNARBSUSSQZFWTGUYZGSGZDMICAYYEWIQA
SOIMRBLERRGCFMFRVFMFUKHHEBRFQLAFIBLDHMRUMPNMEMGYLNARBSUSSQZFWTGUYZGSGZDMICAYYEWIQA
THE ZIMMERMANN TELEGRAM WAS DECODED BY ROOM FORTY IN LONDON AND BROUGHT AMERICA INTO THE GREAT WAR
bifid
bifid
fractionation
{ "type": "keyword", "value": "FREEDOM" }
advanced
en
82
82
cipher_museum
2.0
public
null
null
double-transposition-159
FEOTONVOAFETRCVERHLERHNADATBHOARTOWDESTABUD
FEOTONVOAFETRCVERHLERHNADATBHOARTOWDESTABUD
FORTUNE FAVORS THE BOLD AND THE BRAVE WHO DARE TO ACT
double_transposition
double_transposition
transposition
{ "key1": "ENEMY", "key2": "CIPHER" }
advanced
en
43
43
cipher_museum
0.2
public
null
null