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stringlengths
6
2.11k
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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
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int64
6
1.09k
length
int64
6
1.28k
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2 values
dataset_version
stringclasses
2 values
split
stringclasses
1 value
attack_methods
listlengths
0
3
educational_note
stringclasses
32 values
cda-0008109
TBBR NQHQOGWBAOY GBBYF RKCYOVA GUSWE YVZVGF FHNFGWGHGVBA QWCUREF ZOC NONU NSGGRE GB O RVSSNESAG YRGGSE GBQOL
TBBR NQHQOGWBAOY GBBYF RKCYOVA GUSWE YVZVGF FHNFGWGHGVBA QWCUREF ZOC NONU NSGGRE GB O RVSSNESAG YRGGSE GBQOL
GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER TODAY
porta
porta
null
{ "key": "JUSTICE" }
hard
en
93
93
synthetic_educational
null
null
[]
wallis-cipher-v2-0050
90 22 42 89 82 91 90 34 33 39 61 55 91 90 22 42 89 21 91 90 85 28 39 23 10 91 90 14 81 63 55 33 34 22 91 90 28 24 91 90 43 49 37 61 91 90 24 45 56 54 10 91 90 43 42 53 63 89 13 91 90 55 23 87 10 91 90 33 91 90 24 61 81 60 52 91 90 43 87 86 91 90 39 42 89 82 91 90 85 28 22 23 55 91 90 10 33 60 52 91 90 76 42 53 63 89 45...
90 22 42 89 82 91 90 34 33 39 61 55 91 90 22 42 89 21 91 90 85 28 39 23 10 91 90 14 81 63 55 33 34 22 91 90 28 24 91 90 43 49 37 61 91 90 24 45 56 54 10 91 90 43 42 53 63 89 13 91 90 55 23 87 10 91 90 33 91 90 24 61 81 60 52 91 90 43 87 86 91 90 39 42 89 82 91 90 85 28 22 23 55 91 90 10 33 60 52 91 90 76 42 53 63 89 45...
GOOD NIGHT GOOD NIGHT PARTING IS SUCH SWEET SORROW THAT I SHALL SAY GOOD NIGHT TILL MORROW
wallis_cipher
wallis_cipher
nomenclator
{ "type": "seed", "value": "OXFORD" }
expert
en
216
323
cipher_museum
2.0
public
null
null
hill-120
FTNXFMNABIAOAOHNHQZPVGSRLKESLDYAZXOEMWAJYMKPHQQWUWWVDTVOFRYKGBZILHEEVDFEZIJJDPSMHNHQLKVOXSPEZVWYVIHNTJLKESAJHFAMVGTUFLFTNXVGXQMYAMDHFDMLCCDIDTTP
FTNXFMNABIAOAOHNHQZPVGSRLKESLDYAZXOEMWAJYMKPHQQWUWWVDTVOFRYKGBZILHEEVDFEZIJJDPSMHNHQLKVOXSPEZVWYVIHNTJLKESAJHFAMVGTUFLFTNXVGXQMYAMDHFDMLCCDIDTTP
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
hill
hill
polygraphic
{ "a": 3, "b": 3, "c": 2, "d": 7 }
advanced
en
144
144
cipher_museum
0.2
public
null
null
cda-0021000
06366 2532 01607 03814 2877 00693 05661 00397 05695 7924 5054 5696 01607 6034 01612 5686 06981 1629 6003 03485 04407 4800 07222 3867 01661 01344 02293 1641 01951 4724 05746 6295 2608 01601 1024 4773 4152 4095 6594 04466 2907 06372 7851 0988 4763 3781 6652 04164 4411 00367 5750 6352 05671 0316 4478 5992 5103 04760 06027...
06366 2532 01607 03814 2877 00693 05661 00397 05695 7924 5054 5696 01607 6034 01612 5686 06981 1629 6003 03485 04407 4800 07222 3867 01661 01344 02293 1641 01951 4724 05746 6295 2608 01601 1024 4773 4152 4095 6594 04466 2907 06372 7851 0988 4763 3781 6652 04164 4411 00367 5750 6352 05671 0316 4478 5992 5103 04760 06027...
THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER HONESTLY
zimmermann
zimmermann
null
{}
hard
en
94
94
synthetic_educational
null
null
[ "codebook_frequency", "number_group_analysis" ]
Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher.
venona-pad-reuse-080
AZXIX7EZPIDJT4EDW
AZXIX7EZPIDJT4EDW
CRYPTOGRAPHY RULES
venona_pad_reuse
venona_pad_reuse
stream
{ "type": "keyword", "value": "CIPHER" }
expert
en
17
17
cipher_museum
0.2
public
null
null
lorenz-v2-0066
ONCEUPONAMIDNIGHTDREARYWDILEIPONCEREDSEAKANDWEARYOVERIANYAQUAINTVOLUMEOFLORF
ONCEUPONAMIDNIGHTDREARYWDILEIPONCEREDSEAKANDWEARYOVERIANYAQUAINTVOLUMEOFLORF
ONCE UPON A MIDNIGHT DREARY WHILE I PONDERED WEAK AND WEARY OVER MANY A QUAINT VOLUME OF LORE
lorenz
lorenz
machine
{ "type": "seed", "value": "TUNNY" }
expert
en
76
76
cipher_museum
2.0
public
null
null
cda-0015146
GRONS FELDU SESAX IGITZ EQUEN CEASX HEREX EATIZ GKEYX
GRONS FELDU SESAX IGITZ EQUEN CEASX HEREX EATIZ GKEYX
GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY
commercial_code
commercial_code
null
{}
medium
en
45
45
synthetic_educational
null
null
[ "codebook_frequency", "five_letter_group_analysis" ]
Commercial code: five-letter groups from a codebook, often ending in X or Z.
kama-sutra-v2-0304
RTYTGWM RGWYE QWF EWOTY BZUOFVCGR EQT RGTWE GZBTG ZF YKA KJTY SGKL ZEF FKCGUT EK EQT FTW
RTYTGWM RGWYE QWF EWOTY BZUOFVCGR EQT RGTWE GZBTG ZF YKA KJTY SGKL ZEF FKCGUT EK EQT FTW
GENERAL GRANT HAS TAKEN VICKSBURG THE GREAT RIVER IS NOW OPEN FROM ITS SOURCE TO THE SEA
kama_sutra
kama_sutra
substitution
{ "type": "keyword", "value": "INDIA" }
intermediate
en
72
88
cipher_museum
2.0
public
null
null
four-square-158
ZALCYSRDYSRCDNEHRFNEYBRKHQUTUGSNHHDLCODLAIETRONLCZ
ZALCYSRDYSRCDNEHRFNEYBRKHQUTUGSNHHDLCODLAIETRONLCZ
VENI VIDI VICI I CAME I SAW I CONQUERED ALL IN A SINGLE BATTLE
four_square
four_square
polygraphic
{ "key1": "SECRET", "key2": "AGENTS" }
advanced
en
50
50
cipher_museum
0.2
public
null
null
voynich-render-v3-0073
afdxxde oqd gcd lddp siq gcdu xcoff krcdqkg gcd doqgc ore gcd ndoydlopdqx xcoff ad yoffde xirx
afdxxde oqd gcd lddp siq gcdu xcoff krcdqkg gcd doqgc ore gcd ndoydlopdqx xcoff ad yoffde xirx
BLESSED ARE THE MEEK FOR THEY SHALL INHERIT THE EARTH AND THE PEACEMAKERS SHALL BE CALLED SONS
voynich_render
voynich_render
substitution
{ "type": "none", "value": null }
expert
en
78
94
cipher_museum
2.0
public
null
null
solitaire-v3-0253
NGETRUEARAHHVCAXURTT
NGETRUEARAHHVCAXURTT
STEAM POWER TRANSFORMS
solitaire
solitaire
stream
{ "type": "passphrase", "value": "PONTIFEX" }
expert
en
20
20
cipher_museum
2.0
public
null
null
pigpen-026
┤ ┤• ┐• ╳• ⌐ ┐• ├ ├• ⌐ ┐• ¬ ┬ ┼• ┤• ╳•
┤ ┤• ┐• ╳• ⌐ ┐• ├ ├• ⌐ ┐• ¬ ┬ ┼• ┤• ╳•
FORWARD MARCH NOW
pigpen
pigpen
substitution
{ "type": "none", "value": null }
beginner
en
24
38
cipher_museum
0.2
public
null
null
cda-0002421
HVCS VZLC EFRQ FQUS OCXV TLHY DWFH NRVX VVWE XXZF A
HVCS VZLC EFRQ FQUS OCXV TLHY DWFH NRVX VVWE XXZF A
SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY
autokey
autokey
null
{ "primer": "PRAYER" }
medium
en
41
41
synthetic_educational
null
null
[ "running_key_analysis", "index_of_coincidence" ]
Autokey: Vigenère where the plaintext extends the key — harder to Kasiski-attack.
cda-0021434
3.34.7 12.49.6 10.19.11 13.19.14 18.15.14 4.10.5 8.36.8 3.30.7 15.11.7 4.41.4 13.35.2 17.33.2 10.15.12 8.7.10 20.12.11 20.33.10 20.28.1 13.12.3 1.12.14 1.46.11 12.36.14 19.31.14 6.11.10 11.22.8 15.13.4 15.19.11 12.24.15 18.18.15 19.18.5 11.25.8 7.24.10 2.40.12 1.26.14 14.23.9 6.47.4 16.12.13 18.35.3 2.24.7 13.20.14 12....
3.34.7 12.49.6 10.19.11 13.19.14 18.15.14 4.10.5 8.36.8 3.30.7 15.11.7 4.41.4 13.35.2 17.33.2 10.15.12 8.7.10 20.12.11 20.33.10 20.28.1 13.12.3 1.12.14 1.46.11 12.36.14 19.31.14 6.11.10 11.22.8 15.13.4 15.19.11 12.24.15 18.18.15 19.18.5 11.25.8 7.24.10 2.40.12 1.26.14 14.23.9 6.47.4 16.12.13 18.35.3 2.24.7 13.20.14 12....
DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX TODAY
book_cipher
book_cipher
null
{}
medium
en
72
72
synthetic_educational
null
null
[ "book_cipher_attack", "triple_index_search" ]
Book cipher: coordinates (page.line.word) referencing a shared document.
playfair-v3-0037
OLLRQSCUVKEPETUNTGLZ
OLLRQSCUVKEPETUNTGLZ
MEASURE TWICE CUT ONCE
playfair
playfair
polygraphic
{ "type": "keyword", "value": "PALACE" }
intermediate
en
20
20
cipher_museum
2.0
public
null
null
four-square-v2-0218
DEEFSPIPSDPQEKFBYTHQPCEPPCEGKSLNKMDRHEIURNGTQCNEBEOUEPLOKESRSPYTBUYLMRECEPBUXACPBFQCHL
DEEFSPIPSDPQEKFBYTHQPCEPPCEGKSLNKMDRHEIURNGTQCNEBEOUEPLOKESRSPYTBUYLMRECEPBUXACPBFQCHL
HEADQUARTERS CONFIRMS THAT THE INTELLIGENCE REPORT IS ACCURATE AND REQUIRES IMMEDIATE SWIFT ACTION
four_square
four_square
polygraphic
{ "key1": "LIBERTY", "key2": "FREEDOM" }
advanced
en
86
86
cipher_museum
2.0
public
null
null
lorenz-v2-0305
TRUSTINTHELORDWITHALLTHINEHEARTANDLEANNOTUNTOTHINEOWNUNDERSTANDINGINALLWAYS
TRUSTINTHELORDWITHALLTHINEHEARTANDLEANNOTUNTOTHINEOWNUNDERSTANDINGINALLWAYS
TRUST IN THE LORD WITH ALL THINE HEART AND LEAN NOT UNTO THINE OWN UNDERSTANDING IN ALL WAYS
lorenz
lorenz
machine
{ "type": "seed", "value": "COLOSSUS" }
expert
en
75
75
cipher_museum
2.0
public
null
null
cda-0021092
. .-. .-. --- .-. / -.-. --- .-. .-. . -.-. - .. --- -. / .- -. -.. / -.. . - . -.-. - .. --- -. / .- .-. . / ..-. ..- -. -.. .- -- . -. - .- .-.. / - --- / ... . -.-. ..- .-. . / ... -.-- ... - . -- ... / .- / - .-. .- -. ... .--. .- .-. . -. - / - --- --- .-.. / ... .... --- ..- .-.. -.. / ... .... --- .-- / .. - ......
. .-. .-. --- .-. / -.-. --- .-. .-. . -.-. - .. --- -. / .- -. -.. / -.. . - . -.-. - .. --- -. / .- .-. . / ..-. ..- -. -.. .- -- . -. - .- .-.. / - --- / ... . -.-. ..- .-. . / ... -.-- ... - . -- ... / .- / - .-. .- -. ... .--. .- .-. . -. - / - --- --- .-.. / ... .... --- ..- .-.. -.. / ... .... --- .-- / .. - ......
ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS A TRANSPARENT TOOL SHOULD SHOW ITS REASONING THE MESSAGE WAS HIDDEN BUT NOT SECURE
morse_code
morse_code
null
{}
hard
en
125
125
synthetic_educational
null
null
[ "symbol_decode", "frequency_analysis" ]
Morse code: dots and dashes; word-separated by / symbol.
red-type-a-029
QUMXGYGMEDHTADEC
QUMXGYGMEDHTADEC
LOCK DOWN ALL GATES
red_type_a
red_type_a
machine
{ "type": "keyword", "value": "TOKYORED" }
advanced
en
16
16
cipher_museum
0.2
public
null
null
cda-0016798
TROOP HOURS EIGHT ABOVE RADIO COVER HOUSE INNER TRACK ENTER CARRY TRACK UPPER RIGHT EXACT SCOUT HOLDS OPENS UNTIL LIGHT DELAY MILES AFTER KINGS EIGHT
TROOP HOURS EIGHT ABOVE RADIO COVER HOUSE INNER TRACK ENTER CARRY TRACK UPPER RIGHT EXACT SCOUT HOLDS OPENS UNTIL LIGHT DELAY MILES AFTER KINGS EIGHT
THE ARCHITECTURE SHOULD MAKE MISUSE HARDER ATBASH ENCODES BY REVERSING THE ALPHABET
null_cipher
null_cipher
null
{}
hard
en
125
125
synthetic_educational
null
null
[ "acrostic_detection", "first_letter_extraction" ]
Null/steganographic cipher: hidden message formed by first letters of words.
nomenclator-v2-0201
60 18 05 07 09 13 05 14 20 19 08 01 12 12 01 04 22 01 14 03 05 01 20 06 09 18 19 20 12 09 07 08 20 19 21 16 16 15 18 20 05 04 02 25 01 18 20 09 12 12 05 18 25 15 14 60 05 01 19 20 05 18 14 06 12 01 14 11 20 15 04 01 25
60 18 05 07 09 13 05 14 20 19 08 01 12 12 01 04 22 01 14 03 05 01 20 06 09 18 19 20 12 09 07 08 20 19 21 16 16 15 18 20 05 04 02 25 01 18 20 09 12 12 05 18 25 15 14 60 05 01 19 20 05 18 14 06 12 01 14 11 20 15 04 01 25
THE REGIMENT SHALL ADVANCE AT FIRST LIGHT SUPPORTED BY ARTILLERY ON THE EASTERN FLANK TODAY
nomenclator
nomenclator
nomenclator
{ "type": "seed", "value": "PALACE" }
expert
en
146
218
cipher_museum
2.0
public
null
null
fractionated-morse-v2-0561
IPXJAMMDPVGAWMLCTVAALGELSMJVGJEMGSNIPGKQEMDQSTEXUPAJPVVECIAPSAENPWNESIWMCGDPENASJEQQS
IPXJAMMDPVGAWMLCTVAALGELSMJVGJEMGSNIPGKQEMDQSTEXUPAJPVVECIAPSAENPWNESIWMCGDPENASJEQQS
WITH MALICE TOWARD NONE WITH CHARITY FOR ALL LET US BIND UP THE NATIONS WOUNDS AND HEAL
fractionated_morse
fractionated_morse
fractionation
{ "type": "keyword", "value": "JUSTICE" }
advanced
en
85
85
cipher_museum
2.0
public
null
null
fialka-147
AXSFHOURWFTO
AXSFHOURWFTO
THE TRAP IS SET
fialka
fialka
machine
{ "type": "seed", "value": "SECRET" }
expert
en
12
12
cipher_museum
0.2
public
null
null
monoalphabetic-133
AKAJY BLPSAQ KAMP
AKAJY BLPSAQ KAMP
ENEMY FORCES NEAR
monoalphabetic
monoalphabetic
substitution
{ "type": "keyword", "value": "MUSEUM" }
beginner
en
15
17
cipher_museum
0.2
public
null
null
two-square-v3-0183
WEMELDTHBTETRUTHSTPABTELHFVIAONTTHCSCKLMRLYEECRECSEDITVMEPGBCPHEYARERLDOWEDBCQHEIRYDICDFIZEQKBERTARIZHCKIEOMEKERRAKSSTGBTAMOSMTHBTICREIHHFIHBEEUYAQFTHLTVFSUEQNRGBPPRIBTPZ
WEMELDTHBTETRUTHSTPABTELHFVIAONTTHCSCKLMRLYEECRECSEDITVMEPGBCPHEYARERLDOWEDBCQHEIRYDICDFIZEQKBERTARIZHCKIEOMEKERRAKSSTGBTAMOSMTHBTICREIHHFIHBEEUYAQFTHLTVFSUEQNRGBPPRIBTPZ
WE HOLD THESE TRUTHS TO BE SELF EVIDENT THAT ALL MEN ARE CREATED EQUAL THAT THEY ARE ENDOWED BY THEIR CREATOR WITH CERTAIN UNALIENABLE RIGHTS THAT AMONG THESE ARE LIFE LIBERTY AND THE PURSUIT OF HAPPINESS
two_square
two_square
polygraphic
{ "key1": "LIBERTY", "key2": "FREEDOM" }
advanced
en
170
170
cipher_museum
2.0
public
null
null
red-type-a-v3-0040
IAZAKU
IAZAKU
EUREKA
red_type_a
red_type_a
machine
{ "type": "keyword", "value": "SAKURA" }
advanced
en
6
6
cipher_museum
2.0
public
null
null
lorenz-v3-0180
THERIGHTOFTHEPEOPLETOKEGPANDBEARARMSSHALLNOTBEINFRINGEBBYTHEFEDERALGOVERNMENT
THERIGHTOFTHEPEOPLETOKEGPANDBEARARMSSHALLNOTBEINFRINGEBBYTHEFEDERALGOVERNMENT
THE RIGHT OF THE PEOPLE TO KEEP AND BEAR ARMS SHALL NOT BE INFRINGED BY THE FEDERAL GOVERNMENT
lorenz
lorenz
machine
{ "type": "seed", "value": "FISH" }
expert
en
77
77
cipher_museum
2.0
public
null
null
affine-v3-1133
UK DELV BDKMK BXQBDM BE RK MKLZ KFSVKPB BDCB CLL AKP CXK GXKCBKV KIQCL BDCB BDKY CXK KPVEUKV RY BDKSX GXKCBEX USBD GKXBCSP QPCLSKPCRLK XSODBM BDCB CAEPO BDKMK CXK LSZK LSRKXBY CPV BDK TQXMQSB EZ DCTTSPKMM
UK DELV BDKMK BXQBDM BE RK MKLZ KFSVKPB BDCB CLL AKP CXK GXKCBKV KIQCL BDCB BDKY CXK KPVEUKV RY BDKSX GXKCBEX USBD GKXBCSP QPCLSKPCRLK XSODBM BDCB CAEPO BDKMK CXK LSZK LSRKXBY CPV BDK TQXMQSB EZ DCTTSPKMM
WE HOLD THESE TRUTHS TO BE SELF EVIDENT THAT ALL MEN ARE CREATED EQUAL THAT THEY ARE ENDOWED BY THEIR CREATOR WITH CERTAIN UNALIENABLE RIGHTS THAT AMONG THESE ARE LIFE LIBERTY AND THE PURSUIT OF HAPPINESS
affine
affine
substitution
{ "a": 15, "b": 2 }
beginner
en
169
204
cipher_museum
2.0
public
null
null
playfair-v2-0222
XHOKNSGKDTEROHEBWAUOXHOKAKBOKRVTRTDHHZKRGOPBNPFDBGQOLOBPHIOCGMEAHKZFDMCFFARZFELOBPHIEKFEMDCFBPZFAWERRGPHAGOKOZRTHYODTFHPERIPUAMQOKOUCOHRMAOAMPSA
XHOKNSGKDTEROHEBWAUOXHOKAKBOKRVTRTDHHZKRGOPBNPFDBGQOLOBPHIOCGMEAHKZFDMCFFARZFELOBPHIEKFEMDCFBPZFAWERRGPHAGOKOZRTHYODTFHPERIPUAMQOKOUCOHRMAOAMPSA
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
playfair
playfair
polygraphic
{ "type": "keyword", "value": "FORTRESS" }
intermediate
en
144
144
cipher_museum
2.0
public
null
null
monoalphabetic-v3-0851
SDR VHLDRIEQS QTLLRROQ
SDR VHLDRIEQS QTLLRROQ
THE ALCHEMIST SUCCEEDS
monoalphabetic
monoalphabetic
substitution
{ "type": "keyword", "value": "VALOR" }
beginner
en
20
22
cipher_museum
2.0
public
null
null
vic-v2-0244
241818338139154886381758179487
241818338139154886381758179487
BRIDGE DESTROYED AT DAWN
vic
vic
substitution
{ "type": "keyword", "value": "LIBERTY" }
advanced
en
30
30
cipher_museum
2.0
public
null
null
cda-0018341
67 23 1 14 61 72 3 91 66 43 60 94 23 3 48 35 59 63 3 45 87 1 39 72 46 79 93 57 48 15 23 3 33 82 99 64 52 23 21 3 41 63 25 11 59 91 11 22 96 46
67 23 1 14 61 72 3 91 66 43 60 94 23 3 48 35 59 63 3 45 87 1 39 72 46 79 93 57 48 15 23 3 33 82 99 64 52 23 21 3 41 63 25 11 59 91 11 22 96 46
BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF
homophonic
homophonic
null
{}
medium
en
50
50
synthetic_educational
null
null
[ "frequency_analysis", "multiple_ciphertext_attack" ]
Homophonic substitution: each letter maps to multiple possible numbers.
cda-0003138
IEBS RXLT LEOE SAAE TNGT NIUL SXCE DSSD NAHO ATDO NACX EXFS IWSS UTOG PHRO AUXE ME
IEBS RXLT LEOE SAAE TNGT NIUL SXCE DSSD NAHO ATDO NACX EXFS IWSS UTOG PHRO AUXE ME
THE MESSAGE WAS HIDDEN BUT NOT SECURE FAIL CLOSED IS A POSTURE NOT A SLOGAN
double_transposition
double_transposition
null
{ "key1": "SECURE", "key2": "DRAGON" }
medium
en
66
66
synthetic_educational
null
null
[ "key_length_search", "anagram_recovery" ]
Double columnar transposition: apply columnar twice for stronger security.
alberti-disk-v2-0837
CREKEGRFADXLIEOFBDMWHPEMTALHUFOHBRXBJDIYCSEUGZJQIWBTHPXUEROGFTWTQLAHMXWKUONLSATZB
CREKEGRFADXLIEOFBDMWHPEMTALHUFOHBRXBJDIYCSEUGZJQIWBTHPXUEROGFTWTQLAHMXWKUONLSATZB
OBSERVATION EXPERIMENT AND REASON ARE THE THREE PILLARS OF ALL SCIENTIFIC INQUIRY AND PROGRESS
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 16 }
expert
en
81
81
cipher_museum
2.0
public
null
null
fractionated-morse-v3-0058
OPUCDFJPFVNMSOLDSJCWQQLLPXBJOLOOJPTLDCXOPWOLDLAVSFSLMSOLBJHSFNAFEUBCSFPUAFNCUIQNATFPSTFSL
OPUCDFJPFVNMSOLDSJCWQQLLPXBJOLOOJPTLDCXOPWOLDLAVSFSLMSOLBJHSFNAFEUBCSFPUAFNCUIQNATFPSTFSL
THE LIGHT YOU SEE FROM DISTANT STARS LEFT THOSE SUNS THOUSANDS OF YEARS BEFORE YOUR BIRTH
fractionated_morse
fractionated_morse
fractionation
{ "type": "keyword", "value": "PALACE" }
advanced
en
89
89
cipher_museum
2.0
public
null
null
four-square-v3-0400
CIKCANGLLCDC
CIKCANGLLCDC
GOLD FROM LEAD
four_square
four_square
polygraphic
{ "key1": "WISDOM", "key2": "COURAGE" }
advanced
en
12
12
cipher_museum
2.0
public
null
null
monoalphabetic-v2-0586
QAKPR VAK BLJJKQ ORHRHIRO QAR MLPQ LOR BKJERHJRE QK ORMRLQ CQ LP MACGKPKMARO PLJQLXLJL KIPROURE
QAKPR VAK BLJJKQ ORHRHIRO QAR MLPQ LOR BKJERHJRE QK ORMRLQ CQ LP MACGKPKMARO PLJQLXLJL KIPROURE
THOSE WHO CANNOT REMEMBER THE PAST ARE CONDEMNED TO REPEAT IT AS PHILOSOPHER SANTAYANA OBSERVED
monoalphabetic
monoalphabetic
substitution
{ "type": "keyword", "value": "LIBERTY" }
beginner
en
81
95
cipher_museum
2.0
public
null
null
kryha-v3-0196
TNEJPOZFIKRQKDJNQOHUEHBROGYYUVPKFRRZIQPPKCBOFZBDARTXFCDZAMQPAPEZAWILFUJMMMZFPBBDQSPRDZYSYEAVECCNZXNESBYCEDCNYWFPZGPXCNWFIHHRHNKQDMMBWVFBVEEMONYXPVZVBHKVKXKBUEHAOYVSTOO
TNEJPOZFIKRQKDJNQOHUEHBROGYYUVPKFRRZIQPPKCBOFZBDARTXFCDZAMQPAPEZAWILFUJMMMZFPBBDQSPRDZYSYEAVECCNZXNESBYCEDCNYWFPZGPXCNWFIHHRHNKQDMMBWVFBVEEMONYXPVZVBHKVKXKBUEHAOYVSTOO
WHEN IN THE COURSE OF HUMAN EVENTS IT BECOMES NECESSARY FOR ONE PEOPLE TO DISSOLVE THE POLITICAL BANDS WHICH HAVE CONNECTED THEM WITH ANOTHER THEY SHOULD DECLARE THE CAUSES WHICH IMPEL THE SEPARATION
kryha
kryha
machine
{ "type": "keyword", "value": "VIENNA" }
expert
en
167
167
cipher_museum
2.0
public
null
null
affine-v3-0834
GLKUU DZY LMXIGKB BKE
GLKUU DZY LMXIGKB BKE
CROSS THE RUBICON NOW
affine
affine
substitution
{ "a": 9, "b": 14 }
beginner
en
18
21
cipher_museum
2.0
public
null
null
cda-0020604
SETLZ BTXTK TJJXH QIMXG YYRUG YMKOG QDRII SLFEY JRLFG XFVEE XPLQI EAKXI GNAHP CXXRY NIEFZ HDGKC JCTXB UESKV GQGKT UCBTK ZEKFZ NEBZD OIOZG NDUIX WOEKX RUFQB OSHZW LXVSC IV
SETLZ BTXTK TJJXH QIMXG YYRUG YMKOG QDRII SLFEY JRLFG XFVEE XPLQI EAKXI GNAHP CXXRY NIEFZ HDGKC JCTXB UESKV GQGKT UCBTK ZEKFZ NEBZD OIOZG NDUIX WOEKX RUFQB OSHZW LXVSC IV
POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF
one_time_pad
one_time_pad
null
{}
hard
en
142
142
synthetic_educational
null
null
[ "information_theoretic_proof", "key_reuse_attack" ]
One-time pad: theoretically unbreakable if key is truly random and never reused.
cardano-autokey-017
OQIXTTMALSZOROK
OQIXTTMALSZOROK
MEET AT THE OLD OAK
cardano_autokey
cardano_autokey
polyalphabetic
{ "type": "keyword", "value": "CARDANO" }
advanced
en
15
15
cipher_museum
0.2
public
null
null
enigma-v3-0335
YYPJQYGTZXFOE
YYPJQYGTZXFOE
FULL SAIL AHEAD
enigma
enigma
machine
{ "type": "rotor_start", "value": "JKL" }
expert
en
13
13
cipher_museum
2.0
public
null
null
pigpen-022
⌐ ╳• ⌐ ┐ ╳ ┤ ╱ ┐• ╳ ┬ ┼ ┐• ┤• ┐• ├ ┼ ┐• ╲
⌐ ╳• ⌐ ┐ ╳ ┤ ╱ ┐• ╳ ┬ ┼ ┐• ┤• ┐• ├ ┼ ┐• ╲
AWAIT FURTHER ORDERS
pigpen
pigpen
substitution
{ "type": "none", "value": null }
beginner
en
24
41
cipher_museum
0.2
public
null
null
trithemius-034
IU YDW YNL JNCE AS HXCVK BN RWP RGE XQUWY UM BRWPE
IU YDW YNL JNCE AS HXCVK BN RWP RGE XQUWY UM BRWPE
IT WAS THE BEST OF TIMES IT WAS THE WORST OF TIMES
trithemius
trithemius
polyalphabetic
{ "type": "none", "value": null }
beginner
en
39
50
cipher_museum
0.2
public
null
null
alberti-disk-v2-0254
FENZIVSTLCBYGSHSCXYAURI
FENZIVSTLCBYGSHSCXYAURI
CARTHAGE MUST BE DESTROYED
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 8 }
expert
en
23
23
cipher_museum
2.0
public
null
null
adfgx-v3-0220
FGFADGAGDFAGDXDFXFAFFDAFAFGAAAFFGDAXDADGAFADGDFDAAADDAADAD
FGFADGAGDFAGDXDFXFAFFDAFAFGAAAFFGDAXDADGAFADGDFDAAADDAADAD
TAXATION WITHOUT REPRESENTATION
adfgx
adfgx
fractionation
{ "polybius": "TRIUMPH", "columnar": "JUSTICE" }
advanced
en
58
58
cipher_museum
2.0
public
null
null
fialka-v3-0257
KBXDTGHSFBLDIHTHEQQSBCJAFBZIQHCKOENXIZOJPIGIMXGSWNKQGGIRLMGTAIXKMCXERDU
KBXDTGHSFBLDIHTHEQQSBCJAFBZIQHCKOENXIZOJPIGIMXGSWNKQGGIRLMGTAIXKMCXERDU
IT WAS A BRIGHT COLD DAY IN APRIL AND THE CLOCKS WERE STRIKING THIRTEEN ACROSS THE CITY
fialka
fialka
machine
{ "type": "seed", "value": "SOVIET" }
expert
en
71
71
cipher_museum
2.0
public
null
null
chaocipher-v2-0377
AWKBXXKFKQTXOBXRYCXOUXRLPPGJTAEWLJEAIHQDCWTWNFMCRDUAQVJATIVQWAYRGJDKJOWOUUORAKKKGTEZUPKZDDKEOPSKWYOLKODZRNCXEELCXEWGFMDKXSFTUZYDBPZBAKIKPMDWGFFRSGTNWROLIZIKVTJVCROOBHGPIPDW
AWKBXXKFKQTXOBXRYCXOUXRLPPGJTAEWLJEAIHQDCWTWNFMCRDUAQVJATIVQWAYRGJDKJOWOUUORAKKKGTEZUPKZDDKEOPSKWYOLKODZRNCXEELCXEWGFMDKXSFTUZYDBPZBAKIKPMDWGFFRSGTNWROLIZIKVTJVCROOBHGPIPDW
THE GREAT CIPHER OF LOUIS XIV INVENTED BY ANTOINE AND BONAVENTURE ROSSIGNOL USED A NOMENCLATOR OF OVER FIVE HUNDRED NUMBERS REPRESENTING SYLLABLES WORDS AND NULLS AND REMAINED UNBROKEN FOR TWO CENTURIES
chaocipher
chaocipher
machine
{ "type": "keyword", "value": "FREEDOM" }
advanced
en
172
172
cipher_museum
2.0
public
null
null
trithemius-029
LPEN HTCU IUV RMGSH
LPEN HTCU IUV RMGSH
LOCK DOWN ALL GATES
trithemius
trithemius
polyalphabetic
{ "type": "none", "value": null }
beginner
en
16
19
cipher_museum
0.2
public
null
null
joseon-yeokhak-v3-0043
UMAAIOMZMKMQDMLKTMIZTG
UMAAIOMZMKMQDMLKTMIZTG
MESSAGE RECEIVED CLEARLY
joseon_yeokhak
joseon_yeokhak
substitution
{ "type": "keyword", "value": "SEOUL" }
beginner
en
22
22
cipher_museum
2.0
public
null
null
playfair-421
UFTFEAYWOMMFERKZ
UFTFEAYWOMMFERKZ
LOCK DOWN ALL GATES
playfair
playfair
polygraphic
{ "type": "keyword", "value": "CRYPTO" }
intermediate
en
16
16
cipher_museum
0.2
public
null
null
nomenclator-v3-0175
14 05 23 20 15 14 19 01 23 60 01 16 16 12 05 06 01 12 12 61 09 14 20 21 09 20 05 04 60 19 01 13 05 06 15 18 03 05 20 08 01 20 08 15 12 04 19 60 16 12 01 14 05 20 19 64 20 08 05 09 18 16 01 20 08 19
14 05 23 20 15 14 19 01 23 60 01 16 16 12 05 06 01 12 12 61 09 14 20 21 09 20 05 04 60 19 01 13 05 06 15 18 03 05 20 08 01 20 08 15 12 04 19 60 16 12 01 14 05 20 19 64 20 08 05 09 18 16 01 20 08 19
NEWTON SAW THE APPLE FALL AND INTUITED THE SAME FORCE THAT HOLDS THE PLANETS IN THEIR PATHS
nomenclator
nomenclator
nomenclator
{ "type": "seed", "value": "PALACE" }
expert
en
132
197
cipher_museum
2.0
public
null
null
cda-0004479
EWGUC XEZBN WYQRR HQEZH HZOQR GRFCW QTJLT
EWGUC XEZBN WYQRR HQEZH HZOQR GRFCW QTJLT
EVERY SYSTEM NEEDS AN HONEST THREAT MODEL
trithemius
trithemius
null
{}
medium
en
35
35
synthetic_educational
null
null
[ "progressive_shift_detection", "frequency_analysis" ]
Trithemius: progressive Caesar (shift = letter position); no key needed.
cda-0006953
DTXS UQHG MGLN RFKG TWUX ROKF BLEI OIHQ EUZH SRXU UEWI KOQF SKDL QPTR BPQN DCIU OFTY CYWJ XVZL PRCX XUIG UUDI XUUL WPTO ZAIK QULF QHZW QGFF MTYP BPML UFUV KQDC BTDM CTOV DEOX HWIB RZFE LILQ LFXV
DTXS UQHG MGLN RFKG TWUX ROKF BLEI OIHQ EUZH SRXU UEWI KOQF SKDL QPTR BPQN DCIU OFTY CYWJ XVZL PRCX XUIG UUDI XUUL WPTO ZAIK QULF QHZW QGFF MTYP BPML UFUV KQDC BTDM CTOV DEOX HWIB RZFE LILQ LFXV
A STRONG CLAIM NEEDS STRONG EVIDENCE PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS
gronsfeld
gronsfeld
null
{ "key": "31416" }
hard
en
156
156
synthetic_educational
null
null
[]
cda-0020698
dal chol ctaiin chedal dainy oxed okshy otol raiin chol chedal ytedy okshy oxed shedy qotedy otaiin ypchol raiin otol chedy dal qokeedy sheedy otedy shedy shaiin chol
dal chol ctaiin chedal dainy oxed okshy otol raiin chol chedal ytedy okshy oxed shedy qotedy otaiin ypchol raiin otol chedy dal qokeedy sheedy otedy shedy shaiin chol
PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN
voynich_render
voynich_render
null
{}
hard
en
139
139
synthetic_educational
null
null
[ "statistical_analysis", "unsolved" ]
Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output.
adfgx-v2-0101
XDDXGFFXGAXAGDXAGDXDADAXDFFGXDDAAADFDGFAFFGFFAGADGGFAAGDAFDXGFGDGGXGFXXAGDXGGXAFFAXADAAGGGFGGGAGAAAAGAGGFAFGFFAFAFAGGGFFGADFADAAGGAAAGGAFDGXGGFXADDXAFDXGFGGXDFGDDDXXFDGDGGG
XDDXGFFXGAXAGDXAGDXDADAXDFFGXDDAAADFDGFAFFGFFAGADGGFAAGDAFDXGFGDGGXGFXXAGDXGGXAFFAXADAAGGGFGGGAGAAAAGAGGFAFGFFAFAFAGGGFFGADFADAAGGAAAGGAFDGXGGFXADDXAFDXGFGGXDFGDDDXXFDGDGGG
HEADQUARTERS CONFIRMS THAT THE INTELLIGENCE REPORT IS ACCURATE AND REQUIRES IMMEDIATE SWIFT ACTION
adfgx
adfgx
fractionation
{ "polybius": "PALACE", "columnar": "BATTLE" }
advanced
en
172
172
cipher_museum
2.0
public
null
null
red-type-a-v2-0441
MIGZUNXEMOPUWSKOKINLLTTIPZOVUPUSAMINRAXELDVUSMZEOVUXCEHIYKUVCZICRRISPEQIPF
MIGZUNXEMOPUWSKOKINLLTTIPZOVUPUSAMINRAXELDVUSMZEOVUXCEHIYKUVCZICRRISPEQIPF
FOR GOD SO LOVED THE WORLD THAT HE GAVE HIS ONLY SON THAT WHOEVER BELIEVES SHALL NOT PERISH
red_type_a
red_type_a
machine
{ "type": "keyword", "value": "MIKADO" }
advanced
en
74
74
cipher_museum
2.0
public
null
null
bazeries-258
TGMSHMMYQOGARTYN
TGMSHMMYQOGARTYN
BURN AFTER READING
bazeries
bazeries
transposition
{ "type": "integer", "value": 31 }
advanced
en
16
16
cipher_museum
0.2
public
null
null
cda-0013398
AITLSEJGEIZVGHDYRYHZEFQBCGVABAAXUEQFVGFJYYODVFAKKQPJAZHJWKUMOIXTUILIMTJTQKHBIBXQOTMERBINSMWUJQ
AITLSEJGEIZVGHDYRYHZEFQBCGVABAAXUEQFVGFJYYODVFAKKQPJAZHJWKUMOIXTUILIMTJTQKHBIBXQOTMERBINSMWUJQ
CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE
vernam
vernam
null
{}
hard
en
94
94
synthetic_educational
null
null
[ "key_reuse_attack", "information_theoretic_proof" ]
Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP.
cda-0021991
RMWV CLUX LRMX RWVM XVNV ZHFI VHOV GGVI UIVJ FVMX BWRH GIRY FGRL M
RMWV CLUX LRMX RWVM XVNV ZHFI VHOV GGVI UIVJ FVMX BWRH GIRY FGRL M
INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION
atbash
atbash
null
{}
medium
en
53
53
synthetic_educational
null
null
[ "self_inverse_check", "frequency_analysis" ]
Atbash maps A↔Z, B↔Y, … and is its own inverse.
fialka-v3-0110
GLIUUYULNRIXQGLU
GLIUUYULNRIXQGLU
THE GATES HOLD FIRM
fialka
fialka
machine
{ "type": "seed", "value": "KREMLIN" }
expert
en
16
16
cipher_museum
2.0
public
null
null
adfgvx-018
ADAAFDXGDFXDFGADDVVGGFDVDVXGADDA
ADAAFDXGDFXDFGADDVVGGFDVDVXGADDA
BURN AFTER READING
adfgvx
adfgvx
fractionation
{ "polybius": "PRIVACY", "columnar": "GERMAN" }
advanced
en
32
32
cipher_museum
0.2
public
null
null
caesar-v2-0922
ZADFT EFMD TAXPE RUDY OAGDEQ
ZADFT EFMD TAXPE RUDY OAGDEQ
NORTH STAR HOLDS FIRM COURSE
caesar
caesar
substitution
{ "type": "shift", "value": 12 }
beginner
en
24
28
cipher_museum
2.0
public
null
null
vigenere-v3-1429
VFUUEIVCTNZSZLGOLKOLGQBXLCZMPUWFVKVVCJVRGXKCHJWOXJCOKARITHCEGZLGCJGOYMVWIETUCQILGRKWGBWV
VFUUEIVCTNZSZLGOLKOLGQBXLCZMPUWFVKVVCJVRGXKCHJWOXJCOKARITHCEGZLGCJGOYMVWIETUCQILGRKWGBWV
TRADECRAFT IS THE ART OF CONDUCTING COVERT OPERATIONS WITHOUT ALERTING THE OPPOSITION TO YOUR PRESENCE
vigenere
vigenere
polyalphabetic
{ "type": "keyword", "value": "COURAGE" }
intermediate
en
88
88
cipher_museum
2.0
public
null
null
affine-v2-1132
MJDLO IBDYJJIQYBGY PYLIVYP HLKS PYGLWTDYP QYLSOB YBIQSO DLOHHIG IBPIGODYU DZOD YBYSW TOBFYL PIVIUIKBU OLY GKBGYBDLODYP OD GOJOIU GKBHILSIBQ DZY PYGYTDIKB KTYLODIKB HKLDIDMPY ZOU UMGGYYPYP
MJDLO IBDYJJIQYBGY PYLIVYP HLKS PYGLWTDYP QYLSOB YBIQSO DLOHHIG IBPIGODYU DZOD YBYSW TOBFYL PIVIUIKBU OLY GKBGYBDLODYP OD GOJOIU GKBHILSIBQ DZY PYGYTDIKB KTYLODIKB HKLDIDMPY ZOU UMGGYYPYP
ULTRA INTELLIGENCE DERIVED FROM DECRYPTED GERMAN ENIGMA TRAFFIC INDICATES THAT ENEMY PANZER DIVISIONS ARE CONCENTRATED AT CALAIS CONFIRMING THE DECEPTION OPERATION FORTITUDE HAS SUCCEEDED
affine
affine
substitution
{ "a": 9, "b": 14 }
beginner
en
164
187
cipher_museum
2.0
public
null
null
joseon-yeokhak-v3-0178
RCIBHCCHVSFGOGMCIKCIZRVOJSHVSARCIBHCMCIHVWGWGHVSUCZRSBFIZSCTOZZFSZWUWCBG
RCIBHCCHVSFGOGMCIKCIZRVOJSHVSARCIBHCMCIHVWGWGHVSUCZRSBFIZSCTOZZFSZWUWCBG
DO UNTO OTHERS AS YOU WOULD HAVE THEM DO UNTO YOU THIS IS THE GOLDEN RULE OF ALL RELIGIONS
joseon_yeokhak
joseon_yeokhak
substitution
{ "type": "keyword", "value": "JOSEON" }
beginner
en
72
72
cipher_museum
2.0
public
null
null
lorenz-v2-0195
NATUREISWRITTENINTHELANEUAGEOFMATHEMATICSANDITSCHARACTGRSARETRIANGLESANDCIRCLES
NATUREISWRITTENINTHELANEUAGEOFMATHEMATICSANDITSCHARACTGRSARETRIANGLESANDCIRCLES
NATURE IS WRITTEN IN THE LANGUAGE OF MATHEMATICS AND ITS CHARACTERS ARE TRIANGLES AND CIRCLES
lorenz
lorenz
machine
{ "type": "seed", "value": "FISH" }
expert
en
79
79
cipher_museum
2.0
public
null
null
bifid-v2-0687
RDFTGMUNQDUBLTQUTLDOLAILNTMFUTAELDNLROBLAIRHBKHRDRDIMIXIENIRAAEWWPXHDAAVHAVHCKXPIVHH
RDFTGMUNQDUBLTQUTLDOLAILNTMFUTAELDNLROBLAIRHBKHRDRDIMIXIENIRAAEWWPXHDAAVHAVHCKXPIVHH
THE REGIMENT WILL HOLD ITS POSITION UNTIL REINFORCEMENTS ARRIVE FROM THE EASTERN COMMAND POST HERE
bifid
bifid
fractionation
{ "type": "keyword", "value": "TRIUMPH" }
advanced
en
84
84
cipher_museum
2.0
public
null
null
fractionated-morse-v2-0016
IFNPOTFQETDXCUBR
IFNPOTFQETDXCUBR
COVER MY RETREAT
fractionated_morse
fractionated_morse
fractionation
{ "type": "keyword", "value": "PALACE" }
advanced
en
16
16
cipher_museum
2.0
public
null
null
vigenere-v2-1886
MZUYEPYXSIXOWPEUZYZCVEFVAQGVUVGNTTPKGILQCALRVXQKLKPWHQXZPIQNUCNTSWIWXALVMGEIVFVBBMIAAVGIGCNARDYMADTPAUZSDBCTUXLHRJJYMCBGICFKVLGVZUFXVGWCFXDMYFWFUHOGVAM
MZUYEPYXSIXOWPEUZYZCVEFVAQGVUVGNTTPKGILQCALRVXQKLKPWHQXZPIQNUCNTSWIWXALVMGEIVFVBBMIAAVGIGCNARDYMADTPAUZSDBCTUXLHRJJYMCBGICFKVLGVZUFXVGWCFXDMYFWFUHOGVAM
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
vigenere
vigenere
polyalphabetic
{ "type": "keyword", "value": "TRIUMPH" }
intermediate
en
151
151
cipher_museum
2.0
public
null
null
venona-pad-reuse-v2-0087
PLLNRQ6IGGCJMGFRBKCWPLADDAGBWMETYHGFBMKERKPTYAAO4HPGGVDAGEPMJMLCKLIE2MCGIIGE
PLLNRQ6IGGCJMGFRBKCWPLADDAGBWMETYHGFBMKERKPTYAAO4HPGGVDAGEPMJMLCKLIE2MCGIIGE
ALAN TURING AND GORDON WELCHMAN BUILT THE BOMBE TO ATTACK THE GERMAN ENIGMA CIPHER MACHINE
venona_pad_reuse
venona_pad_reuse
stream
{ "type": "keyword", "value": "PALACE" }
expert
en
76
76
cipher_museum
2.0
public
null
null
bifid-v2-0076
TPELIREAPITQSMRNRQAESIVVNQTPENGPNGNDLISVLSCXWEEYURGESOGWZDSYNDBRXVLUBHDUHYXCX
TPELIREAPITQSMRNRQAESIVVNQTPENGPNGNDLISVLSCXWEEYURGESOGWZDSYNDBRXVLUBHDUHYXCX
SUPPLY LINES HAVE BEEN CUT RATIONS FOR THREE DAYS ONLY AWAIT RESUPPLY OR BREAK THROUGH LINES
bifid
bifid
fractionation
{ "type": "keyword", "value": "PALACE" }
advanced
en
77
77
cipher_museum
2.0
public
null
null
caesar-es-081
OD XQLRQ KDFH OD IXHUCD
OD XQLRQ KDFH OD IXHUCD
LA UNION HACE LA FUERZA
caesar
caesar
substitution
{ "type": "shift", "value": 3 }
beginner
es
19
23
cipher_museum
0.2
public
null
null
monoalphabetic-186
LNJYOOW KP LGKIIOW
LNJYOOW KP LGKIIOW
PROCEED AS PLANNED
monoalphabetic
monoalphabetic
substitution
{ "type": "keyword", "value": "KEYWORD" }
beginner
en
16
18
cipher_museum
0.2
public
null
null
m209-v2-0231
KWAOYWUSZNKGVQUUOSBUKKOOKXMWOOIRIVQLYWNXQOAZRYQKMCLLWIBWKPQIXYXEMJYMQZQRQFPANPLJUZOZ
KWAOYWUSZNKGVQUUOSBUKKOOKXMWOOIRIVQLYWNXQOAZRYQKMCLLWIBWKPQIXYXEMJYMQZQRQFPANPLJUZOZ
THE REGIMENT WILL HOLD ITS POSITION UNTIL REINFORCEMENTS ARRIVE FROM THE EASTERN COMMAND POST HERE
m209
m209
machine
{ "type": "seed", "value": "FREEDOM" }
expert
en
84
84
cipher_museum
2.0
public
null
null
cda-0021102
19.29.15 6.24.7 11.30.6 18.50.11 17.36.13 16.1.2 10.30.6 1.41.9 14.17.2 2.6.8 15.43.10 8.34.10 10.36.13 8.33.8 5.45.13 19.23.9 3.22.12 18.7.12 7.50.1 1.9.3 2.40.14 12.49.14 10.19.11 14.35.13 3.15.4 13.38.14 18.37.11 12.40.11 3.13.9 11.17.8 9.23.9 15.48.5 9.28.9 18.42.5 12.46.7 3.7.12 2.41.13 3.19.9 3.3.6 7.42.2 18.43.1...
19.29.15 6.24.7 11.30.6 18.50.11 17.36.13 16.1.2 10.30.6 1.41.9 14.17.2 2.6.8 15.43.10 8.34.10 10.36.13 8.33.8 5.45.13 19.23.9 3.22.12 18.7.12 7.50.1 1.9.3 2.40.14 12.49.14 10.19.11 14.35.13 3.15.4 13.38.14 18.37.11 12.40.11 3.13.9 11.17.8 9.23.9 15.48.5 9.28.9 18.42.5 12.46.7 3.7.12 2.41.13 3.19.9 3.3.6 7.42.2 18.43.1...
KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS
book_cipher
book_cipher
null
{}
hard
en
216
216
synthetic_educational
null
null
[ "book_cipher_attack", "triple_index_search" ]
Book cipher: coordinates (page.line.word) referencing a shared document.
columnar-transposition-305
EIRHTAOCCSTSEAL
EIRHTAOCCSTSEAL
THE COAST IS CLEAR
columnar_transposition
columnar_transposition
transposition
{ "type": "keyword", "value": "SECRET" }
intermediate
en
15
15
cipher_museum
0.2
public
null
null
lorenz-v2-0287
WHATISINANAMETHATWHICHWECALLAROSEBYANYOTHERNAMEWOULDSMELLASSWEET
WHATISINANAMETHATWHICHWECALLAROSEBYANYOTHERNAMEWOULDSMELLASSWEET
WHAT IS IN A NAME THAT WHICH WE CALL A ROSE BY ANY OTHER NAME WOULD SMELL AS SWEET
lorenz
lorenz
machine
{ "type": "seed", "value": "COLOSSUS" }
expert
en
64
64
cipher_museum
2.0
public
null
null
vic-v3-0104
884080488910908526489688
884080488910908526489688
RENDER UNTO CAESAR
vic
vic
substitution
{ "type": "keyword", "value": "NICKEL" }
advanced
en
24
24
cipher_museum
2.0
public
null
null
cda-0018821
855 861 803 856 858 825 858 862 859 824 844 841 999 807 826 846 823 813 851 855 999 837 802 845 999 813 801 808 822 999 834 813 857 858 812 853 999 857 842 999 801 999 810 825 816 815 812 851 813 841 857 999 833 812 859 858 813 851 999 857 821 814 999 846 834 802 873 816 801 826 851 999 806 826 845 822 814 851 999 814 ...
855 861 803 856 858 825 858 862 859 824 844 841 999 807 826 846 823 813 851 855 999 837 802 845 999 813 801 808 822 999 834 813 857 858 812 853 999 857 842 999 801 999 810 825 816 815 812 851 813 841 857 999 833 812 859 858 813 851 999 857 821 814 999 846 834 802 873 816 801 826 851 999 806 826 845 822 814 851 999 814 ...
SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX A TRANSPARENT TOOL SHOULD SHOW ITS REASONING
culper_ring
culper_ring
null
{}
hard
en
208
208
synthetic_educational
null
null
[ "codebook_frequency", "number_range_analysis" ]
Culper Ring code: Washington's three-digit codebook numbers (800–999 range).
geez-monastic-v2-0307
WQGLVCYVQUFMQYBJQDJYJWZHQQMYAMQZWUWNNVGWUUVOIVHQUFVHZMUFMSWQJYUFMMWZUJZVBMQ
WQGLVCYVQUFMQYBJQDJYJWZHQQMYAMQZWUWNNVGWUUVOIVHQUFVHZMUFMSWQJYUFMMWZUJZVBMQ
ARMY OF NORTHERN VIRGINIA SURRENDERS AT APPOMATTOX COURTHOUSE THE WAR IN THE EAST IS OVER
geez_monastic
geez_monastic
substitution
{ "type": "keyword", "value": "LALIBELA" }
advanced
en
75
75
cipher_museum
2.0
public
null
null
alberti-disk-242
ZWAAOIUFAB
ZWAAOIUFAB
FLEE AT ONCE
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 22 }
expert
en
10
10
cipher_museum
0.2
public
null
null
beaufort-es-019
GWFUUOAPMKZJXMRPJPAHRDR
GWFUUOAPMKZJXMRPJPAHRDR
VIVA LA REPUBLICA ESPANOLA
beaufort
beaufort
polyalphabetic
{ "type": "keyword", "value": "BEAUFORT" }
intermediate
es
23
23
cipher_museum
0.2
public
null
null
diana-v2-0225
SEACAAJZPAKPWSQPAKIJUYOWAUNHZYEPQUUOXMOHWAHVSAAFDHLWPGSWKWPYRHXZPSLUOLFPS
SEACAAJZPAKPWSQPAKIJUYOWAUNHZYEPQUUOXMOHWAHVSAAFDHLWPGSWKWPYRHXZPSLUOLFPS
ALEA IACTA EST ET CAESAR RUBICONE TRANSGRESSO BELLUM CIVILE INCIPIT PER TOTAM ROMANAM
diana
diana
polyalphabetic
{ "type": "keyword", "value": "SPECIAL" }
intermediate
en
73
73
cipher_museum
2.0
public
null
null
enigma-v2-0773
RQLHBHDTGGUUCLMOKQH
RQLHBHDTGGUUCLMOKQH
CODED MESSAGE FOLLOWS
enigma
enigma
machine
{ "type": "rotor_start", "value": "STU" }
expert
en
19
19
cipher_museum
2.0
public
null
null
cda-0007933
PBVWI WTDWA NDTRZ ERIWT EHKKM ZLQJD FJZPK BEMEG WIKKA HHODB IZSJU NMJDH URXLF VCCVZ FWMMA MCZTF FWVNM YIVCT ZPWEX VJMYS PZYDS BTVLN LAMMD SQNZE XRTXN WUQFQ EFRRW NZPWW CETRR TJVUM CQAPR TDJGV TFZAM AXDNR TDHVE TEDJD AKAJO V
PBVWI WTDWA NDTRZ ERIWT EHKKM ZLQJD FJZPK BEMEG WIKKA HHODB IZSJU NMJDH URXLF VCCVZ FWMMA MCZTF FWVNM YIVCT ZPWEX VJMYS PZYDS BTVLN LAMMD SQNZE XRTXN WUQFQ EFRRW NZPWW CETRR TJVUM CQAPR TDJGV TFZAM AXDNR TDHVE TEDJD AKAJO V
PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS
trithemius
trithemius
null
{}
hard
en
186
186
synthetic_educational
null
null
[]
cda-0017114
sheedy shal rcheol chor otol qokeedy dal shaiin chedy shedy shedy rcheol qotedy okedy qokedy okal kaiiin otedy dal oxed sharal rcheol raiin sharal kaiiin oxed qokedy
sheedy shal rcheol chor otol qokeedy dal shaiin chedy shedy shedy rcheol qotedy okedy qokedy okal kaiiin otedy dal oxed sharal rcheol raiin sharal kaiiin oxed qokedy
GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY THE ARCHITECTURE SHOULD MAKE MISUSE HARDER
voynich_render
voynich_render
null
{}
hard
en
139
139
synthetic_educational
null
null
[ "statistical_analysis", "unsolved" ]
Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output.
adfgx-055
DDFDADXDGAAGDDDFGDGGGGFAFXFDGFXGGDGFGDDDFDFFDFADXAXXFDGFAXDGFXADDAGDXDFFFXGXXXADAXDXADXFXXFXXADFDDGAFXXDADGFXFAFDADAAFGGDDFDXAFDAAXDAXFDAFFADFDXDFFFXGDFXAFXDDAAXAXXDXAAXXFXAFXDFAAXADDXXFXDXAGDDXFXXGXFXFFFFFXFAXGDFDDXXFFFGGXFGXFXFFXAGDAAAGFGADGAXFFDFFXDXGDAAXFFGFDXXFGFXXDXAG
DDFDADXDGAAGDDDFGDGGGGFAFXFDGFXGGDGFGDDDFDFFDFADXAXXFDGFAXDGFXADDAGDXDFFFXGXXXADAXDXADXFXXFXXADFDDGAFXXDADGFXFAFDADAAFGGDDFDXAFDAAXDAXFDAFFADFDXDFFFXGDFXAFXDDAAXAXXDXAAXXFXAFXDFAAXADDXXFXDXAGDDXFXXGXFXFFFFFXFAXGDFDDXXFFFGGXFGXFXFFXAGDAAAGFGADGAXFFDFFXDXGDAAXFFGFDXXFGFXXDXAG
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
adfgx
adfgx
fractionation
{ "polybius": "PRIVACY", "columnar": "GERMAN" }
advanced
en
274
274
cipher_museum
0.2
public
null
null
cda-0020375
⟨a19⟩ ⟨w10⟩ ⟨w28⟩ ⟨a25⟩ ⟨w20⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w22⟩ ⟨a19⟩ ⟨w20⟩ ⟨w08⟩ ⟨a17⟩ ⟨w08⟩ ⟨w26⟩ ⟨a19⟩ ⟨w32⟩ ⟨a17⟩ ⟨w32⟩ ⟨a07⟩ ⟨w08⟩ ⟨a13⟩ ⟨a19⟩ ⟨w20⟩ ⟨w22⟩ ⟨w14⟩ ⟨a19⟩ ⟨w32⟩ ⟨a11⟩ ⟨w20⟩ ⟨a17⟩ ⟨w26⟩ ⟨w20⟩ ⟨w10⟩ ⟨w04⟩ ⟨w20⟩ ⟨a25⟩ ⟨a19⟩ ⟨w32⟩ ⟨w14⟩ ⟨a13⟩ ⟨w08⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a19⟩ ⟨a07⟩ ⟨w32⟩ ⟨a07⟩ ⟨a17⟩ ⟨w...
⟨a19⟩ ⟨w10⟩ ⟨w28⟩ ⟨a25⟩ ⟨w20⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w22⟩ ⟨a19⟩ ⟨w20⟩ ⟨w08⟩ ⟨a17⟩ ⟨w08⟩ ⟨w26⟩ ⟨a19⟩ ⟨w32⟩ ⟨a17⟩ ⟨w32⟩ ⟨a07⟩ ⟨w08⟩ ⟨a13⟩ ⟨a19⟩ ⟨w20⟩ ⟨w22⟩ ⟨w14⟩ ⟨a19⟩ ⟨w32⟩ ⟨a11⟩ ⟨w20⟩ ⟨a17⟩ ⟨w26⟩ ⟨w20⟩ ⟨w10⟩ ⟨w04⟩ ⟨w20⟩ ⟨a25⟩ ⟨a19⟩ ⟨w32⟩ ⟨w14⟩ ⟨a13⟩ ⟨w08⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a19⟩ ⟨a07⟩ ⟨w32⟩ ⟨a07⟩ ⟨a17⟩ ⟨w...
ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION
babington
babington
null
{}
hard
en
103
103
synthetic_educational
null
null
[ "nomenclator_frequency", "symbol_mapping" ]
Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot.
playfair-it-026
WCGECFPZCZEKICFCGT
WCGECFPZCZEKICFCGT
VINCERE E VINCEREMO
playfair
playfair
substitution
{ "type": "keyword", "value": "CIPHER" }
intermediate
it
18
18
cipher_museum
0.2
public
null
null
m209-v3-0358
JWZVBCLRMGNPDMN
JWZVBCLRMGNPDMN
THE FACTORY ROARS
m209
m209
machine
{ "type": "seed", "value": "VICTORY" }
expert
en
15
15
cipher_museum
2.0
public
null
null
running-key-033
PLLSLJPWLTJFTUVXR
PLLSLJPWLTJFTUVXR
THE EAGLE HAS LANDED
running_key
running_key
polyalphabetic
{ "type": "text", "value": "Declaration paraphrase" }
intermediate
en
17
17
cipher_museum
0.2
public
null
null
joseon-yeokhak-v2-0216
AOFMEISSBCTGQCHGKOGPSVSORSROTHSFVSFQWDVSFZSHHSFGKSFSRSQCRSRPMHVCAOGDVSZWDDSG
AOFMEISSBCTGQCHGKOGPSVSORSROTHSFVSFQWDVSFZSHHSFGKSFSRSQCRSRPMHVCAOGDVSZWDDSG
MARY QUEEN OF SCOTS WAS BEHEADED AFTER HER CIPHER LETTERS WERE DECODED BY THOMAS PHELIPPES
joseon_yeokhak
joseon_yeokhak
substitution
{ "type": "keyword", "value": "JOSEON" }
beginner
en
76
76
cipher_museum
2.0
public
null
null
rot13-v2-0012
ZVFFVBA NPPBZCYVFURQ
ZVFFVBA NPPBZCYVFURQ
MISSION ACCOMPLISHED
rot13
rot13
substitution
{ "type": "none", "value": null }
beginner
en
19
20
cipher_museum
2.0
public
null
null
affine-v3-0861
DZY LYPGKODU OLY GKSIBQ
DZY LYPGKODU OLY GKSIBQ
THE REDCOATS ARE COMING
affine
affine
substitution
{ "a": 9, "b": 14 }
beginner
en
20
23
cipher_museum
2.0
public
null
null
caesar-398
ESP CPAZCED ZQ XJ OPLES SLGP MPPY RCPLEWJ PILRRPCLEPO
ESP CPAZCED ZQ XJ OPLES SLGP MPPY RCPLEWJ PILRRPCLEPO
THE REPORTS OF MY DEATH HAVE BEEN GREATLY EXAGGERATED
caesar
caesar
substitution
{ "type": "shift", "value": 11 }
beginner
en
45
53
cipher_museum
0.2
public
null
null
cda-0017387
20 8 5 16 12 1 25 6 1 9 18 3 9 16 8 5 18 5 14 3 18 25 16 20 19 16 1 9 18 19 15 6 12 5 20 20 5 18 19 19 9 13 21 12 20 1 14 5 15 21 19 12 25 8 9 12 12 3 9 16 8 5 18 21 19 5 19 12 9 14 5 1 18 1 12 7 5 2 18 1 20 15 5 14 3 18 25 16 20 2 12 15 3 11 19 15 6 12 5 20 20 5 18 19 20 8 5 12 9 2 18 1 18 25 16 18 5 19 5 18 22 5 19 1...
20 8 5 16 12 1 25 6 1 9 18 3 9 16 8 5 18 5 14 3 18 25 16 20 19 16 1 9 18 19 15 6 12 5 20 20 5 18 19 19 9 13 21 12 20 1 14 5 15 21 19 12 25 8 9 12 12 3 9 16 8 5 18 21 19 5 19 12 9 14 5 1 18 1 12 7 5 2 18 1 20 15 5 14 3 18 25 16 20 2 12 15 3 11 19 15 6 12 5 20 20 5 18 19 20 8 5 12 9 2 18 1 18 25 16 18 5 19 5 18 22 5 19 1...
THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY
aeneas_tacticus
aeneas_tacticus
null
{}
hard
en
147
147
synthetic_educational
null
null
[ "sequential_number_decode", "frequency_analysis" ]
Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26.
cda-0017224
843 846 814 840 999 855 843 862 853 808 812 999 859 842 842 835 854 999 800 835 835 843 868 999 826 841 810 813 845 814 840 810 812 840 858 999 864 812 853 826 816 824 807 801 858 825 843 841 999 858 821 812 999 802 861 858 843 832 814 872 999 807 825 847 822 813 851 999 813 871 857 813 841 810 856 999 858 821 813 999 ...
843 846 814 840 999 855 843 862 853 808 812 999 859 842 842 835 854 999 800 835 835 843 868 999 826 841 810 813 845 814 840 810 812 840 858 999 864 812 853 826 816 824 807 801 858 825 843 841 999 858 821 812 999 802 861 858 843 832 814 872 999 807 825 847 822 813 851 999 813 871 857 813 841 810 856 999 858 821 813 999 ...
OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN
culper_ring
culper_ring
null
{}
hard
en
175
175
synthetic_educational
null
null
[ "codebook_frequency", "number_range_analysis" ]
Culper Ring code: Washington's three-digit codebook numbers (800–999 range).
purple-102
GIDZKHMSOIJDMEBZCMCWWKWPEEVWNZZSEEUJUXLRUNIWRDMCNEUCISOBQDOVRRUA
GIDZKHMSOIJDMEBZCMCWWKWPEEVWNZZSEEUJUXLRUNIWRDMCNEUCISOBQDOVRRUA
CRYPTOGRAPHY IS THE PRACTICE OF SECURING COMMUNICATIONS FROM ADVERSARIES
purple
purple
machine
{ "type": "seed", "value": "CIPHER" }
expert
en
64
64
cipher_museum
0.2
public
null
null
zimmermann-v2-0108
00010 99999 90012 90000 90011 90008 90002 90004 99998 99999 90019 90014 90022 90000 90017 90003 99998 99999 90013 90014 90013 90004 99998 00010 99999 90002 90007 90000 90017 90008 90019 90024 99998 00008 00030 00010 99999 90005 90008 90017 90012 90013 90004 90018 90018 99998 00004 00000 99999 90017 90008 90006 90007 90...
00010 99999 90012 90000 90011 90008 90002 90004 99998 99999 90019 90014 90022 90000 90017 90003 99998 99999 90013 90014 90013 90004 99998 00010 99999 90002 90007 90000 90017 90008 90019 90024 99998 00008 00030 00010 99999 90005 90008 90017 90012 90013 90004 90018 90018 99998 00004 00000 99999 90017 90008 90006 90007 90...
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
zimmermann
zimmermann
codebook
{ "type": "none", "value": null }
expert
en
685
821
cipher_museum
2.0
public
null
null