id
stringlengths
7
52
text
stringlengths
6
2.11k
ciphertext
stringlengths
6
2.11k
plaintext
stringlengths
6
282
label
stringclasses
81 values
cipher
stringclasses
81 values
cipher_family
stringclasses
13 values
key
unknown
difficulty
stringclasses
7 values
language
stringclasses
8 values
text_length
int64
6
1.09k
length
int64
6
1.28k
source
stringclasses
2 values
dataset_version
stringclasses
2 values
split
stringclasses
1 value
attack_methods
listlengths
0
3
educational_note
stringclasses
32 values
bazeries-v2-0450
YOPBQBJQMYQQIBFHYMQIYGBPQYOTIFQAESJAQGJJNFPJQIFAIFDFYKUJHYMTJTGGFYQOS
YOPBQBJQMYQQIBFHYMQIYGBPQYOTIFQAESJAQGJJNFPJQIFAIFDFYKUJHYMTJTGGFYQOS
IT IS BETTER TO REMAIN SILENT AND BE THOUGHT A FOOL THAN TO SPEAK AND REMOVE ALL DOUBT
bazeries
bazeries
transposition
{ "type": "integer", "value": 41 }
advanced
en
69
69
cipher_museum
2.0
public
null
null
cda-0019818
HZCSGSHKDPPZIXOUVIQIONIBBVEKTPFTUXLDEDBEQQBWDUIOQULXK
HZCSGSHKDPPZIXOUVIQIONIBBVEKTPFTUXLDEDBEQQBWDUIOQULXK
THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY
vernam
vernam
null
{}
medium
en
53
53
synthetic_educational
null
null
[ "key_reuse_attack", "information_theoretic_proof" ]
Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP.
trifid-v2-0551
OPYXOJBI+WUDJPZCJCYSBQ+WODAQCBDNXAR+JMGTTDZBUBERLLPBEPRLTHKDUSAZJP
OPYXOJBI+WUDJPZCJCYSBQ+WODAQCBDNXAR+JMGTTDZBUBERLLPBEPRLTHKDUSAZJP
WE ARE SUCH STUFF AS DREAMS ARE MADE ON AND OUR LITTLE LIFE IS ROUNDED WITH A SLEEP
trifid
trifid
fractionation
{ "type": "keyword", "value": "JUSTICE" }
advanced
en
66
66
cipher_museum
2.0
public
null
null
cda-0009783
PEGQ CTZU PRAW DXGS IIJX HFXN GEOY LB
PEGQ CTZU PRAW DXGS IIJX HFXN GEOY LB
FAIL CLOSED IS A POSTURE NOT A SLOGAN
autokey
autokey
null
{ "primer": "KEY" }
medium
en
30
30
synthetic_educational
null
null
[]
caesar-v3-1315
QUNMIH QY BUPY ZIOHX NBY MNLOWNOLY IZ XHU UHX CN CM U XIOVFY BYFCR IZ VLYUNBNUECHA VYUONS
QUNMIH QY BUPY ZIOHX NBY MNLOWNOLY IZ XHU UHX CN CM U XIOVFY BYFCR IZ VLYUNBNUECHA VYUONS
WATSON WE HAVE FOUND THE STRUCTURE OF DNA AND IT IS A DOUBLE HELIX OF BREATHTAKING BEAUTY
caesar
caesar
substitution
{ "type": "shift", "value": 20 }
beginner
en
73
89
cipher_museum
2.0
public
null
null
solitaire-v2-0220
GTMEFZZNEHMVTPUYGGVWZRWSIHZFRUHVXAVXECIJOJNIUANCEOYNLXFIJKMGDGSRINIQKTEHWEXUKDIVQSTQ
GTMEFZZNEHMVTPUYGGVWZRWSIHZFRUHVXAVXECIJOJNIUANCEOYNLXFIJKMGDGSRINIQKTEHWEXUKDIVQSTQ
CODED TRANSMISSION INDICATES ENEMY FORCES ASSEMBLING ALONG THE BORDER WITH HEAVY ARTILLERY UNITS
solitaire
solitaire
stream
{ "type": "passphrase", "value": "SCHNEIER" }
expert
en
84
84
cipher_museum
2.0
public
null
null
adfgvx-124
ADGAFFDAAFADDAGDGAGVVDDXXXXVVDFVDGFVGADD
ADGAFFDAAFADDAGDGAGVVDDXXXXVVDFVDGFVGADD
RENDEZVOUS AT MIDNIGHT
adfgvx
adfgvx
fractionation
{ "polybius": "SECRET", "columnar": "AGENTS" }
advanced
en
40
40
cipher_museum
0.2
public
null
null
columnar-transposition-v2-0449
TBIAOMGESSTSNIDFOETOIASAUOSWEMSFAERHASEAWNOFNHFTGDNTLSIETWEOATI
TBIAOMGESSTSNIDFOETOIASAUOSWEMSFAERHASEAWNOFNHFTGDNTLSIETWEOATI
IT WAS THE BEST OF TIMES IT WAS AN AGE OF WISDOM AND AN AGE OF UTTER FOOLISHNESS
columnar_transposition
columnar_transposition
transposition
{ "type": "keyword", "value": "WARRIOR" }
intermediate
en
63
63
cipher_museum
2.0
public
null
null
cda-0017557
GROU POFT ENOF TEND AILY ENTE RDEP THUN DERC ARRY AGAI NTUR NSIN TELO FTEN NAVA LALE RTLO CALT URNS OUTE RORD ERLI NESS COUT EXAC TEXT RAPO STSL ARGE ALON G
GROU POFT ENOF TEND AILY ENTE RDEP THUN DERC ARRY AGAI NTUR NSIN TELO FTEN NAVA LALE RTLO CALT URNS OUTE RORD ERLI NESS COUT EXAC TEXT RAPO STSL ARGE ALON G
GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES
null_cipher
null_cipher
null
{}
hard
en
125
125
synthetic_educational
null
null
[ "acrostic_detection", "first_letter_extraction" ]
Null/steganographic cipher: hidden message formed by first letters of words.
cda-0013422
lkaiin okeedy ytedy choldaiin ypchol chedal chol oxed otaiin chol oror okal shedy lkaiin okal qotedy daiin ykcheol daral okal okeedy kaiiin ytedy aiiin raiin okshy otedy qokal otaiin choldaiin okal rcheol otol rcheol ytedy daral lkaiin shor daral choldaiin cheol otol lkaiin oxed qokeedy kaiiin chol okeedy dainy qokedy ...
lkaiin okeedy ytedy choldaiin ypchol chedal chol oxed otaiin chol oror okal shedy lkaiin okal qotedy daiin ykcheol daral okal okeedy kaiiin ytedy aiiin raiin okshy otedy qokal otaiin choldaiin okal rcheol otol rcheol ytedy daral lkaiin shor daral choldaiin cheol otol lkaiin oxed qokeedy kaiiin chol okeedy dainy qokedy ...
HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS THE BEST LESSONS SHOW WHERE THE METHOD FAILS FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION
voynich_render
voynich_render
null
{}
hard
en
299
299
synthetic_educational
null
null
[ "statistical_analysis", "unsolved" ]
Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output.
enigma-v2-0981
DMMCXHPCJJCUVSRJVCVXARSDIIVQDDJCYNBVXIITLFXFNKXHPQSYKPSKTBJRMSIOJRFGBMBSW
DMMCXHPCJJCUVSRJVCVXARSDIIVQDDJCYNBVXIITLFXFNKXHPQSYKPSKTBJRMSIOJRFGBMBSW
ALEA IACTA EST ET CAESAR RUBICONE TRANSGRESSO BELLUM CIVILE INCIPIT PER TOTAM ROMANAM
enigma
enigma
machine
{ "type": "rotor_start", "value": "VWX" }
expert
en
73
73
cipher_museum
2.0
public
null
null
kryptos-v2-0175
UUTAFMNSEUMPPGMJUYWTAUGWHXKUYLBLRFAQDTLOMBUUTKYTSBMQQSTHMFERYMXYKKUVAG
UUTAFMNSEUMPPGMJUYWTAUGWHXKUYLBLRFAQDTLOMBUUTKYTSBMQQSTHMFERYMXYKKUVAG
THE QUALITY OF MERCY IS NOT STRAINED IT DROPPETH AS THE GENTLE RAIN FROM HEAVEN ABOVE
kryptos
kryptos
polyalphabetic
{ "type": "keyword", "value": "LANGLEY" }
advanced
en
70
70
cipher_museum
2.0
public
null
null
m209-193
BQZRGASMCYMRZBM
BQZRGASMCYMRZBM
ENEMY FORCES NEAR
m209
m209
machine
{ "type": "seed", "value": "MUSEUM" }
expert
en
15
15
cipher_museum
0.2
public
null
null
cda-0022176
GSV ZIXSRGVXGFIV HSLFOW NZPV NRHFHV SZIWVI
GSV ZIXSRGVXGFIV HSLFOW NZPV NRHFHV SZIWVI
THE ARCHITECTURE SHOULD MAKE MISUSE HARDER
atbash
atbash
null
{}
medium
en
37
37
synthetic_educational
null
null
[ "self_inverse_check", "frequency_analysis" ]
Atbash maps A↔Z, B↔Y, … and is its own inverse.
voynich-render-v3-0048
yoff ld kxclodf xild udoqx ohi rdvdq lkre cij firh nqdykxdfu k gcizhcg k jizfe xokf oaizg ore xdd gcd iydor
yoff ld kxclodf xild udoqx ohi rdvdq lkre cij firh nqdykxdfu k gcizhcg k jizfe xokf oaizg ore xdd gcd iydor
CALL ME ISHMAEL SOME YEARS AGO NEVER MIND HOW LONG PRECISELY I THOUGHT I WOULD SAIL ABOUT AND SEE THE OCEAN
voynich_render
voynich_render
substitution
{ "type": "none", "value": null }
expert
en
87
107
cipher_museum
2.0
public
null
null
culper-ring-v2-0030
998 822 808 818 803 814 812 999 998 806 820 800 817 803 818 999 100 998 806 800 819 804 999
998 822 808 818 803 814 812 999 998 806 820 800 817 803 818 999 100 998 806 800 819 804 999
WISDOM GUARDS THE GATE
culper_ring
culper_ring
codebook
{ "type": "none", "value": null }
expert
en
69
91
cipher_museum
2.0
public
null
null
beaufort-v2-0943
CWCTTSZEASNAFPOJYYCEYLMYVNZBEBYWELSJQYVJQEIBTYCQSPLYKMBUOUTBXSUCBJPPWSEW
CWCTTSZEASNAFPOJYYCEYLMYVNZBEBYWELSJQYVJQEIBTYCQSPLYKMBUOUTBXSUCBJPPWSEW
ASK WHAT YOU CAN DO FOR YOUR COUNTRY NOT WHAT YOUR COUNTRY CAN DO FOR YOU TODAY AND ALWAYS
beaufort
beaufort
polyalphabetic
{ "type": "keyword", "value": "COMPASS" }
intermediate
en
72
72
cipher_museum
2.0
public
null
null
two-square-v3-0045
STEAIRKZLUTRCKSFMUNR
STEAIRKZLUTRCKSFMUNR
STEAM POWER TRANSFORMS
two_square
two_square
polygraphic
{ "key1": "PALACE", "key2": "BATTLE" }
advanced
en
20
20
cipher_museum
2.0
public
null
null
trifid-v2-0418
CWCOPXD+MKDSUDDCGDGSTDFK
CWCOPXD+MKDSUDDCGDGSTDFK
NORTH STAR HOLDS FIRM COURSE
trifid
trifid
fractionation
{ "type": "keyword", "value": "FREEDOM" }
advanced
en
24
24
cipher_museum
2.0
public
null
null
porta-273
BWQDGTKBWUCNBSZPJPMGTWPFTLNSSCUILZZX
BWQDGTKBWUCNBSZPJPMGTWPFTLNSSCUILZZX
THE ONLY THING WE HAVE TO FEAR IS FEAR ITSELF
porta
porta
polyalphabetic
{ "type": "keyword", "value": "KEYWORD" }
intermediate
en
36
36
cipher_museum
0.2
public
null
null
cda-0017843
r ┘· └ X· ┌ ─ ⌐ ┌· K ┌· ⌐ ─ X ┐· ┘· X Γ· K Γ· ┘· ─ ┌· L ⌐ Γ X r ┘· └ X· ┌ ─ X Γ· ─ ┐ L ⌒· ┘· ┌· Γ L ┌·
r ┘· └ X· ┌ ─ ⌐ ┌· K ┌· ⌐ ─ X ┐· ┘· X Γ· K Γ· ┘· ─ ┌· L ⌐ Γ X r ┘· └ X· ┌ ─ X Γ· ─ ┐ L ⌒· ┘· ┌· Γ L ┌·
COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER
pigpen
pigpen
null
{}
easy
en
13
13
synthetic_educational
null
null
[ "symbol_frequency", "grid_position_decode" ]
Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids.
cardano-autokey-178
ODLXALVKALVVJTFVCCIETHFUUZVXYFNDHTLGSZZVPCHRRROLWEHHALKRZFPMTLURITFKALIERKAPALALPZFUVSNQWALJZFWYRWKLALVVSTYALAKFCODNQWALCRAHTWZAPWEALVVMV
ODLXALVKALVVJTFVCCIETHFUUZVXYFNDHTLGSZZVPCHRRROLWEHHALKRZFPMTLURITFKALIERKAPALALPZFUVSNQWALJZFWYRWKLALVVSTYALAKFCODNQWALCRAHTWZAPWEALVVMV
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
cardano_autokey
cardano_autokey
polyalphabetic
{ "type": "keyword", "value": "SECRET" }
advanced
en
137
137
cipher_museum
0.2
public
null
null
bifid-v2-0067
MRAAMMKFBQCARAPVIKRPCRLDCMCUCQMRAPLDPPTZEQTCTWRWUGZZBYGGZWGWRDDUMDOETZKUXHV
MRAAMMKFBQCARAPVIKRPCRLDCMCUCQMRAPLDPPTZEQTCTWRWUGZZBYGGZWGWRDDUMDOETZKUXHV
IN THE BEGINNING GOD CREATED THE HEAVEN AND THE EARTH AND DARKNESS WAS UPON THE FACE OF DEEP
bifid
bifid
fractionation
{ "type": "keyword", "value": "PALACE" }
advanced
en
75
75
cipher_museum
2.0
public
null
null
bifid-de-015
INMNWRZNFSYKQEFDDUDOVDLTC
INMNWRZNFSYKQEFDDUDOVDLTC
IM NAMEN DES DEUTSCHEN VOLKES
bifid
bifid
fractionation
{ "type": "keyword", "value": "KEYWORD" }
advanced
de
25
25
cipher_museum
0.2
public
null
null
vic-137
28385386638328187857386
28385386638328187857386
SILENCE IS GOLDEN
vic
vic
substitution
{ "type": "keyword", "value": "MUSEUM" }
advanced
en
23
23
cipher_museum
0.2
public
null
null
kama-sutra-065
AWV ZFTBA YB ZKVTU
AWV ZFTBA YB ZKVTU
THE COAST IS CLEAR
kama_sutra
kama_sutra
substitution
{ "type": "keyword", "value": "CIPHER" }
intermediate
en
15
18
cipher_museum
0.2
public
null
null
slidex-v3-0094
VOCYEVEDVPEGDOHPXAQEEDIQCYYWFIITWRJQPUDUXLXENTNMJKRRCYMHPWVUVHEDUQGUUKVHBANTZWRPHQAGEDDOMVUMDYVUOWCZZUMVAMPUPWSSCYUDVIFRYLMPSCGIOULNPWUCPDZUFQFLSWBUYZRNQIQJWGNDZN
VOCYEVEDVPEGDOHPXAQEEDIQCYYWFIITWRJQPUDUXLXENTNMJKRRCYMHPWVUVHEDUQGUUKVHBANTZWRPHQAGEDDOMVUMDYVUOWCZZUMVAMPUPWSSCYUDVIFRYLMPSCGIOULNPWUCPDZUFQFLSWBUYZRNQIQJWGNDZN
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
slidex
slidex
transposition
{ "type": "keyword", "value": "BLETCHLEY" }
advanced
en
162
162
cipher_museum
2.0
public
null
null
alberti-disk-v2-0239
UVJMRFJFKQWXFNDOTVUTNHFGSGXCXQIYRPXABYJHRQELKGIWNVRQUGJYCRKOAHWTBNENQSBLEZICMRIKYYHRXRHGKEXHIQPVNUHHXPGRUMQQAOFDMNAHGFQEZIOHZHBMXMHQNJGYNXZWXSXJELDQYIWKRBEPJPIADGAONBMXM
UVJMRFJFKQWXFNDOTVUTNHFGSGXCXQIYRPXABYJHRQELKGIWNVRQUGJYCRKOAHWTBNENQSBLEZICMRIKYYHRXRHGKEXHIQPVNUHHXPGRUMQQAOFDMNAHGFQEZIOHZHBMXMHQNJGYNXZWXSXJELDQYIWKRBEPJPIADGAONBMXM
GENTLEMEN MAY CRY PEACE PEACE BUT THERE IS NO PEACE THE WAR IS ACTUALLY BEGUN THE NEXT GALE THAT SWEEPS FROM THE NORTH WILL BRING TO OUR EARS THE CLASH OF RESOUNDING ARMS OUR BRETHREN ARE ALREADY IN THE FIELD
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 5 }
expert
en
169
169
cipher_museum
2.0
public
null
null
lorenz-v3-0179
CONGRESSSHALLMAKENOLAWRGSPECTINGANESTABLISHMENTOFRELIGKONORPROHIBITINGTHEFREEEXERCISE
CONGRESSSHALLMAKENOLAWRGSPECTINGANESTABLISHMENTOFRELIGKONORPROHIBITINGTHEFREEEXERCISE
CONGRESS SHALL MAKE NO LAW RESPECTING AN ESTABLISHMENT OF RELIGION OR PROHIBITING THE FREE EXERCISE
lorenz
lorenz
machine
{ "type": "seed", "value": "FISH" }
expert
en
85
85
cipher_museum
2.0
public
null
null
affine-v3-1166
EVFE BVS QVKK SJ QFKVZ
EVFE BVS QVKK SJ QFKVZ
DEAD MEN TELL NO TALES
affine
affine
substitution
{ "a": 17, "b": 5 }
beginner
en
18
22
cipher_museum
2.0
public
null
null
nihilist-v3-0124
52 48 28 29 39 67 59 73 38 35 59 48 57 49 55 57 49 26 66 74
52 48 28 29 39 67 59 73 38 35 59 48 57 49 55 57 49 26 66 74
THE REDCOATS ARE COMING
nihilist
nihilist
fractionation
{ "polybius": "LIBERTY", "keyword": "FREEDOM" }
advanced
en
40
59
cipher_museum
2.0
public
null
null
adfgvx-v3-0003
XVADVVFDFAGGDDFADDGFDGAFAFGGFDFGFAAFAVGVFXFFVA
XVADVVFDFAGGDDFADDGFDGAFAFGGFDFGFAAFAVGVFXFFVA
ROME WAS NOT BUILT IN ONE DAY
adfgvx
adfgvx
fractionation
{ "polybius": "PALACE", "columnar": "BATTLE" }
advanced
en
46
46
cipher_museum
2.0
public
null
null
pigpen-v2-0017
¬ ┤• ├ ┼ ├ ├• ┼ ╲ ╲ ⌐ ┌ ┼ ┤ ┤• ¬• ¬• ┤• ╳• ╲
¬ ┤• ├ ┼ ├ ├• ┼ ╲ ╲ ⌐ ┌ ┼ ┤ ┤• ¬• ¬• ┤• ╳• ╲
CODED MESSAGE FOLLOWS
pigpen
pigpen
substitution
{ "type": "none", "value": null }
beginner
en
26
44
cipher_museum
2.0
public
null
null
cda-0019529
63 33 48 34 3 48 79 93 22 86 2 15 64 58 48 63 3 45 62 32 21 66 67 59 30 49 91 92 4 82 60 25 23 58 59 81 58 33 43 33 82 58 21 94 82 68 67 1 11 88 33 81 35 26 52 48 11 67 41 58 23 79 33 34 50 59 15 57 25 17 33 2 96 63 17 82 67 22 68
63 33 48 34 3 48 79 93 22 86 2 15 64 58 48 63 3 45 62 32 21 66 67 59 30 49 91 92 4 82 60 25 23 58 59 81 58 33 43 33 82 58 21 94 82 68 67 1 11 88 33 81 35 26 52 48 11 67 41 58 23 79 33 34 50 59 15 57 25 17 33 2 96 63 17 82 67 22 68
PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH ATBASH ENCODES BY REVERSING THE ALPHABET
homophonic
homophonic
null
{}
medium
en
79
79
synthetic_educational
null
null
[ "frequency_analysis", "multiple_ciphertext_attack" ]
Homophonic substitution: each letter maps to multiple possible numbers.
two-square-v2-0258
RGEWBKOIHAVEEARS
RGEWBKOIHAVEEARS
THE WALLS HAVE EARS
two_square
two_square
polygraphic
{ "key1": "TRIUMPH", "key2": "JUSTICE" }
advanced
en
16
16
cipher_museum
2.0
public
null
null
vic-v2-0220
82404886585888048889091847488850465528584849101269018508989836557440288958690480918910829083468686888592480218683488801893
82404886585888048889091847488850465528584849101269018508989836557440288958690480918910829083468686888592480218683488801893
GENERAL ORDERS NUMBER ONE ALL COMMUNICATIONS SHALL BE ENCRYPTED USING THE APPROVED CIPHER DISK
vic
vic
substitution
{ "type": "keyword", "value": "NICKEL" }
advanced
en
122
122
cipher_museum
2.0
public
null
null
cda-0021962
SRHG LIRX ZOXR KSVI HZIV GVZX SVIH MLGK ILGV XGRL MGSV VMRT NZNZ XSRM VFHV WILG LIHG LXIV ZGVZ KLOB ZOKS ZYVG RXXR KSVI ILFG VXRK SVIH IVZW ZTIR WRMZ KIVH XIRY VWTV LNVG IRXK ZGGV IM
SRHG LIRX ZOXR KSVI HZIV GVZX SVIH MLGK ILGV XGRL MGSV VMRT NZNZ XSRM VFHV WILG LIHG LXIV ZGVZ KLOB ZOKS ZYVG RXXR KSVI ILFG VXRK SVIH IVZW ZTIR WRMZ KIVH XIRY VWTV LNVG IRXK ZGGV IM
HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN
atbash
atbash
null
{}
hard
en
146
146
synthetic_educational
null
null
[ "self_inverse_check", "frequency_analysis" ]
Atbash maps A↔Z, B↔Y, … and is its own inverse.
cardano-autokey-v2-0242
YALPZFULAEKQZLTWLVULAZHLWYBHPWNGALQMKOXATQXHZTMHRKJVVTXVIRCPSLNLVWZLPPEDHXATQFFWALHXALWLBTWHWTXVJZLVVWLHFVXATKQGIFSLPPEDHXATQMVGALTPTAZGTWZONAXSIMFRWKXTFYPAFNMQWSKO
YALPZFULAEKQZLTWLVULAZHLWYBHPWNGALQMKOXATQXHZTMHRKJVVTXVIRCPSLNLVWZLPPEDHXATQFFWALHXALWLBTWHWTXVJZLVVWLHFVXATKQGIFSLPPEDHXATQMVGALTPTAZGTWZONAXSIMFRWKXTFYPAFNMQWSKO
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": "FLORENCE" }
advanced
en
164
164
cipher_museum
2.0
public
null
null
double-transposition-v3-0026
ERBRSEEEEUIRDRHAUT
ERBRSEEEEUIRDRHAUT
TREASURE BURIED HERE
double_transposition
double_transposition
transposition
{ "key1": "PALACE", "key2": "BATTLE" }
advanced
en
18
18
cipher_museum
2.0
public
null
null
cda-0003882
ODIFREBPAEIYIEOETIUSNSOFNXHNYNREEHUNCIMKRDXWUSOLSTGEUFIMWSEHYORSHSTOTEXSIOCDEEBIEARMASSHRLCDRIATKHRXSDDXTEPCINPQETYEUTAUCREETTEERXEACIETLRWNVTQEUREEEPOARTEI
ODIFREBPAEIYIEOETIUSNSOFNXHNYNREEHUNCIMKRDXWUSOLSTGEUFIMWSEHYORSHSTOTEXSIOCDEEBIEARMASSHRLCDRIATKHRXSDDXTEPCINPQETYEUTAUCREETTEERXEACIETLRWNVTQEUREEEPOARTEI
THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH
double_transposition
double_transposition
null
{ "key1": "LIBERTY", "key2": "SIGNAL" }
hard
en
156
156
synthetic_educational
null
null
[ "key_length_search", "anagram_recovery" ]
Double columnar transposition: apply columnar twice for stronger security.
lorenz-042
CRYPTOGRAPHYISTHEPRACTICEOFSECURINGCOMMUNICATIONSFROMADVERSARIES
CRYPTOGRAPHYISTHEPRACTICEOFSECURINGCOMMUNICATIONSFROMADVERSARIES
CRYPTOGRAPHY IS THE PRACTICE OF SECURING COMMUNICATIONS FROM ADVERSARIES
lorenz
lorenz
machine
{ "type": "seed", "value": "LORENZ" }
expert
en
64
64
cipher_museum
0.2
public
null
null
m209-v2-0429
LVBTPQRCWEMYDSUBRPLLZNKCZKWCIZZRLXNBDKVZDXKEMZJVLLDPCYVMYSBZAVRZPLSJZZQLXLVAASJ
LVBTPQRCWEMYDSUBRPLLZNKCZKWCIZZRLXNBDKVZDXKEMZJVLLDPCYVMYSBZAVRZPLSJZZQLXLVAASJ
RICHMOND HAS FALLEN OUR FORCES HAVE ENTERED THE CITY RESISTANCE IS ENDED INFORM THE PRESIDENT
m209
m209
machine
{ "type": "seed", "value": "VICTORY" }
expert
en
79
79
cipher_museum
2.0
public
null
null
cda-0013477
MOIY MZIP XZZG AIBH ZYKT STKI GRSU MSUB IKWY ZQUR PNAA MKJI WSHP UTTG SOBH GMTW CDXG XMRJ JJNQ RXUO X
MOIY MZIP XZZG AIBH ZYKT STKI GRSU MSUB IKWY ZQUR PNAA MKJI WSHP UTTG SOBH GMTW CDXG XMRJ JJNQ RXUO X
THE VIGENERE CIPHER USES A REPEATING KEYWORD OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION
running_key
running_key
null
{}
hard
en
81
81
synthetic_educational
null
null
[ "index_of_coincidence", "probable_plaintext" ]
Running-key cipher: Vigenère with a very long key (e.g. a book passage).
autokey-v3-0070
VAWINIUPZQYXSSVQFMIOLAUHTPELVVTLETOLRZENYGBFFVUOSQYPRFXKXLAKMOSVBZMZHYFANF
VAWINIUPZQYXSSVQFMIOLAUHTPELVVTLETOLRZENYGBFFVUOSQYPRFXKXLAKMOSVBZMZHYFANF
GALILEO POINTED HIS TELESCOPE AT THE HEAVENS AND CONFIRMED THAT THE EARTH ORBITS THE SUN
autokey
autokey
polyalphabetic
{ "type": "keyword", "value": "PALACE" }
intermediate
en
74
74
cipher_museum
2.0
public
null
null
cda-0019126
DLVGXPURFEPTPVPMJDIVRMLHYWLMUKIMFYSIPPQENJYEFZXVKHMCLQPDUSAFIRSODIVOUFPIOPB
DLVGXPURFEPTPVPMJDIVRMLHYWLMUKIMFYSIPPQENJYEFZXVKHMCLQPDUSAFIRSODIVOUFPIOPB
KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM SLOWLY
running_key
running_key
null
{}
medium
en
75
75
synthetic_educational
null
null
[ "index_of_coincidence", "probable_plaintext" ]
Running-key cipher: Vigenère with a very long key (e.g. a book passage).
straddling-checkerboard-035
84740912552939028861312557025766821028061259558613345
84740912552939028861312557025766821028061259558613345
IN WAR THE MORAL IS TO THE PHYSICAL AS THREE IS TO ONE
straddling_checkerboard
straddling_checkerboard
substitution
{ "type": "top_row", "value": "ATONESIRE" }
advanced
en
53
53
cipher_museum
0.2
public
null
null
confederate-vigenere-v3-0206
KPGTMBUDKBCUBFBMVKVIDCHJYBVVSSGKVZVOQUEHRBGZFGPLVVVPRWPPZVFZATGKVBYLZHVHKPELZHHUPQPHDOPHKWDBUZQWYMCAAAVFSWOINSSRIMPHLWTHIUCUKQBXCLFVECGKVMHMAFGFYIPNQRGKVEQYXRSRIMXLD
KPGTMBUDKBCUBFBMVKVIDCHJYBVVSSGKVZVOQUEHRBGZFGPLVVVPRWPPZVFZATGKVBYLZHVHKPELZHHUPQPHDOPHKWDBUZQWYMCAAAVFSWOINSSRIMPHLWTHIUCUKQBXCLFVECGKVMHMAFGFYIPNQRGKVEQYXRSRIMXLD
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
confederate_vigenere
confederate_vigenere
polyalphabetic
{ "type": "keyword", "value": "RICHMOND" }
intermediate
en
165
165
cipher_museum
2.0
public
null
null
jefferson-disk-v2-0004
GZBOHGYYGOUXOI
GZBOHGYYGOUXOI
STORM THE BREACH
jefferson_disk
jefferson_disk
disk
{ "type": "disk_order", "value": "4,2,6,1,3,5" }
expert
en
14
14
cipher_museum
2.0
public
null
null
cda-0016467
25 15 42 13 25 23 34 21 21 43 35 42 24 33 13 24 35 31 15 43 11 54 43 44 23 15 43 54 43 44 15 32 32 45 43 44 12 15 43 15 13 45 42 15 15 51 15 33 24 21 15 33 15 32 54 25 33 34 52 43 11 31 22 34 42 24 44 23 32 23 45 32 11 33 42 15 11 14 11 12 31 15 34 45 44 35 45 44 43 23 34 45 31 14 43 23 34 52 11 31 31 42 15 11 43 34 33...
25 15 42 13 25 23 34 21 21 43 35 42 24 33 13 24 35 31 15 43 11 54 43 44 23 15 43 54 43 44 15 32 32 45 43 44 12 15 43 15 13 45 42 15 15 51 15 33 24 21 15 33 15 32 54 25 33 34 52 43 11 31 22 34 42 24 44 23 32 23 45 32 11 33 42 15 11 14 11 12 31 15 34 45 44 35 45 44 43 23 34 45 31 14 43 23 34 52 11 31 31 42 15 11 43 34 33...
KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER
polybius
polybius
null
{}
hard
en
158
158
synthetic_educational
null
null
[ "pair_decode", "frequency_analysis" ]
Polybius square: 5×5 grid maps letters to two-digit row-column pairs.
atbash-v3-0069
WZIDRM LYHVIEVW GSZG HKVXRVH VELOEV GSILFTS MZGFIZO HVOVXGRLM LEVI EZHG HKZMH LU TVLOLTRX GRNV
WZIDRM LYHVIEVW GSZG HKVXRVH VELOEV GSILFTS MZGFIZO HVOVXGRLM LEVI EZHG HKZMH LU TVLOLTRX GRNV
DARWIN OBSERVED THAT SPECIES EVOLVE THROUGH NATURAL SELECTION OVER VAST SPANS OF GEOLOGIC TIME
atbash
atbash
substitution
{ "type": "none", "value": null }
beginner
en
81
94
cipher_museum
2.0
public
null
null
cda-0012094
⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a25⟩ ⟨a19⟩ ⟨w32⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w04⟩ ⟨w32⟩ ⟨w28⟩ ⟨w22⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w08⟩ ⟨a17⟩ ⟨a31⟩ ⟨w08⟩ ⟨a07⟩ ⟨w14⟩ ⟨w20⟩ ⟨w22⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w08⟩ ⟨a01⟩ ⟨a13⟩ ⟨a29⟩ ⟨w08⟩ ⟨a11⟩ ⟨w20⟩ ⟨a25⟩ ⟨a11⟩ ⟨w40⟩ ⟨w10⟩ ⟨a07⟩ ⟨w20⟩ ⟨a13⟩ ⟨w10⟩ ⟨w22⟩ ⟨w32⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨w20⟩ ⟨w08⟩ ⟨w...
⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a25⟩ ⟨a19⟩ ⟨w32⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w04⟩ ⟨w32⟩ ⟨w28⟩ ⟨w22⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w08⟩ ⟨a17⟩ ⟨a31⟩ ⟨w08⟩ ⟨a07⟩ ⟨w14⟩ ⟨w20⟩ ⟨w22⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w08⟩ ⟨a01⟩ ⟨a13⟩ ⟨a29⟩ ⟨w08⟩ ⟨a11⟩ ⟨w20⟩ ⟨a25⟩ ⟨a11⟩ ⟨w40⟩ ⟨w10⟩ ⟨a07⟩ ⟨w20⟩ ⟨a13⟩ ⟨w10⟩ ⟨w22⟩ ⟨w32⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨w20⟩ ⟨w08⟩ ⟨w...
THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION
babington
babington
null
{}
hard
en
205
205
synthetic_educational
null
null
[ "nomenclator_frequency", "symbol_mapping" ]
Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot.
nomenclator-085
19 09 12 05 14 03 05 09 19 07 15 12 04 05 14
19 09 12 05 14 03 05 09 19 07 15 12 04 05 14
SILENCE IS GOLDEN
nomenclator
nomenclator
nomenclator
{ "type": "seed", "value": "CIPHER" }
expert
en
30
44
cipher_museum
0.2
public
null
null
playfair-v3-0295
DBAKRLNDNYKBBHEURN
DBAKRLNDNYKBBHEURN
ARCHERS TO THE WALLS
playfair
playfair
polygraphic
{ "type": "keyword", "value": "LIBERTY" }
intermediate
en
18
18
cipher_museum
2.0
public
null
null
fractionated-morse-v2-0296
FAKRQQABLUYYVQUUKMAMPALSIAKESMLSBEUYQWLYBMLSLMMDPQUWGYISEWTLWABYNPBDYTNKGFY
FAKRQQABLUYYVQUUKMAMPALSIAKESMLSBEUYQWLYBMLSLMMDPQUWGYISEWTLWABYNPBDYTNKGFY
COWARDS DIE MANY TIMES BEFORE THEIR DEATHS THE VALIANT NEVER TASTE DEATH BUT ONCE
fractionated_morse
fractionated_morse
fractionation
{ "type": "keyword", "value": "LIBERTY" }
advanced
en
75
75
cipher_museum
2.0
public
null
null
kama-sutra-v3-0313
MJN UARPFN JRX XCUGNE
MJN UARPFN JRX XCUGNE
THE ORACLE HAS SPOKEN
kama_sutra
kama_sutra
substitution
{ "type": "keyword", "value": "WISDOM" }
intermediate
en
18
21
cipher_museum
2.0
public
null
null
affine-v2-0770
MANHH OIN LOOLZD
MANHH OIN LOOLZD
PRESS THE ATTACK
affine
affine
substitution
{ "a": 7, "b": 11 }
beginner
en
14
16
cipher_museum
2.0
public
null
null
wallis-cipher-v3-0059
90 55 61 56 91 90 10 23 33 34 91 90 63 54 82 91 90 60 28 85 56 91 90 24 55 42 89 21 91 90 31 33 53 76 91 90 81 10 91 90 59 87 52 81 37 60 87 26 81 91 90 87 43 91 90 55 61 54 91 90 63 49 24 43 28 81 34 91 90 48 87 79 81 52 53 86 91 90 37 23 87 63 22 56 82 91 90 81 48 53 42 24 43 91 90 10 61 54 91 90 14 60 87 33 85 91
90 55 61 56 91 90 10 23 33 34 91 90 63 54 82 91 90 60 28 85 56 91 90 24 55 42 89 21 91 90 31 33 53 76 91 90 81 10 91 90 59 87 52 81 37 60 87 26 81 91 90 87 43 91 90 55 61 54 91 90 63 49 24 43 28 81 34 91 90 48 87 79 81 52 53 86 91 90 37 23 87 63 22 56 82 91 90 81 48 53 42 24 43 91 90 10 61 54 91 90 14 60 87 33 85 91
THE THIN RED LINE STOOD FIRM AT BALACLAVA AS THE RUSSIAN CAVALRY CHARGED ACROSS THE PLAIN
wallis_cipher
wallis_cipher
nomenclator
{ "type": "seed", "value": "OXFORD" }
expert
en
212
317
cipher_museum
2.0
public
null
null
confederate-vigenere-135
GTGIEMASPSIZARU
GTGIEMASPSIZARU
OPERATION BEGINS
confederate_vigenere
confederate_vigenere
polyalphabetic
{ "type": "keyword", "value": "SECRET" }
intermediate
en
15
15
cipher_museum
0.2
public
null
null
nihilist-051
48 46 99 67 50 76 59 57 68 55 46 68 55 57 106 49 38 99 67 50 106 76 36 78 49 46 78 79 58 79 86 67 65 58 77 69 47 77 68 79 58 86 76 49 69 55 49 85 46 60 89 76 56 86 45 40 77 59
48 46 99 67 50 76 59 57 68 55 46 68 55 57 106 49 38 99 67 50 106 76 36 78 49 46 78 79 58 79 86 67 65 58 77 69 47 77 68 79 58 86 76 49 69 55 49 85 46 60 89 76 56 86 45 40 77 59
IN THE BEGINNING WAS THE WORD AND THE WORD WAS WITH GOD AND FULL OF GRACE
nihilist
nihilist
fractionation
{ "polybius": "RUSSIAN", "keyword": "KEY" }
advanced
en
118
175
cipher_museum
0.2
public
null
null
hill-v3-0047
PFKWRPVGOXVBZXTFCKKRUWEQFWRNBJMWAVVOFMQERCBGKYBUKFCIWUOQQMFWPKHGQXVBUMUUKVACTQNNXIPKCMJU
PFKWRPVGOXVBZXTFCKKRUWEQFWRNBJMWAVVOFMQERCBGKYBUKFCIWUOQQMFWPKHGQXVBUMUUKVACTQNNXIPKCMJU
IT IS A TRUTH UNIVERSALLY ACKNOWLEDGED THAT A SINGLE MAN IN POSSESSION OF A FORTUNE MUST BE IN WANT OF A WIFE
hill
hill
polygraphic
{ "a": 3, "b": 5, "c": 2, "d": 9 }
advanced
en
88
88
cipher_museum
2.0
public
null
null
cda-0020399
13.5.3 10.2.6 11.4.7 20.2.5 15.5.10 7.4.4 5.6.4 20.3.3 7.2.8 3.3.1 3.5.9 18.2.10 13.4.6 20.5.2 6.5.1 20.2.8 2.5.1 10.3.10 4.4.2 17.1.10 11.2.6 17.1.4 20.1.9 10.3.1 16.1.5 10.4.8 20.4.7 11.4.7 5.4.4 7.6.8 7.5.3 7.3.10 10.3.1 13.5.4 13.2.8 2.5.10 6.2.8 2.3.7 8.1.10 2.3.9 18.3.3 18.5.6 2.1.4 8.3.6 14.5.2 11.2.8 7.2.3 18.3...
13.5.3 10.2.6 11.4.7 20.2.5 15.5.10 7.4.4 5.6.4 20.3.3 7.2.8 3.3.1 3.5.9 18.2.10 13.4.6 20.5.2 6.5.1 20.2.8 2.5.1 10.3.10 4.4.2 17.1.10 11.2.6 17.1.4 20.1.9 10.3.1 16.1.5 10.4.8 20.4.7 11.4.7 5.4.4 7.6.8 7.5.3 7.3.10 10.3.1 13.5.4 13.2.8 2.5.10 6.2.8 2.3.7 8.1.10 2.3.9 18.3.3 18.5.6 2.1.4 8.3.6 14.5.2 11.2.8 7.2.3 18.3...
THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS
arnold_andre
arnold_andre
null
{}
hard
en
98
98
synthetic_educational
null
null
[ "book_cipher_attack", "triple_index_search" ]
Arnold-André book cipher: coordinates (page.section.word) referencing a shared text.
trifid-vg-0033
FMORTCAJIVEJTEYQXJMJNB+RWXXHEOEQQKXHFZKFLPINSJFUBSYCBLYC+MBKHNAJOBXK
FMORTCAJIVEJTEYQXJMJNB+RWXXHEOEQQKXHFZKFLPINSJFUBSYCBLYC+MBKHNAJOBXK
FROM THE RISING OF THE SUN TO ITS SETTING THE NAME OF THE LORD IS TO BE PRAISED ALWAYS
trifid
trifid
fractionation
{ "type": "keyword", "value": "CIPHER" }
advanced
en
68
68
cipher_museum
2.0
public
null
null
jefferson-disk-v2-0108
VHVZYZTZXRKDGZQYKDCNCYS
VHVZYZTZXRKDGZQYKDCNCYS
CARTHAGE MUST BE DESTROYED
jefferson_disk
jefferson_disk
disk
{ "type": "disk_order", "value": "6,1,4,2,5,3" }
expert
en
23
23
cipher_museum
2.0
public
null
null
porta-v3-0618
ZBKVPGBCGZYGOBCNUMFBONMVBOVGXBHJUEVEBAFSPGOGZYYHEVMUHHYOGLBXIRUPWUAXAJMBZRDPYMBYPIYLJANGRFIRWGWXRGQBORGFZUYSLWWNSYCIBGZWUAXLWLUUYQNBUAVIEULCGGHZWUAXVEPYSUWUERRI
ZBKVPGBCGZYGOBCNUMFBONMVBOVGXBHJUEVEBAFSPGOGZYYHEVMUHHYOGLBXIRUPWUAXAJMBZRDPYMBYPIYLJANGRFIRWGWXRGQBORGFZUYSLWWNSYCIBGZWUAXLWLUUYQNBUAVIEULCGGHZWUAXVEPYSUWUERRI
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
porta
porta
polyalphabetic
{ "type": "keyword", "value": "PAPAL" }
intermediate
en
160
160
cipher_museum
2.0
public
null
null
arnold-andre-v3-0022
13.1.1 14.1.4 14.1.5 14.1.1 14.1.4 15.1.1 13.1.1 14.3.3 14.1.5 14.3.4 15.1.1 13.1.1 14.4.5 14.1.5 14.3.2 14.3.2 15.1.1 13.1.1 14.3.4 14.3.5 15.1.1 13.1.1 14.4.5 14.1.1 14.3.2 14.1.5 14.4.4 15.1.1
13.1.1 14.1.4 14.1.5 14.1.1 14.1.4 15.1.1 13.1.1 14.3.3 14.1.5 14.3.4 15.1.1 13.1.1 14.4.5 14.1.5 14.3.2 14.3.2 15.1.1 13.1.1 14.3.4 14.3.5 15.1.1 13.1.1 14.4.5 14.1.1 14.3.2 14.1.5 14.4.4 15.1.1
DEAD MEN TELL NO TALES
arnold_andre
arnold_andre
codebook
{ "type": "none", "value": null }
expert
en
168
195
cipher_museum
2.0
public
null
null
vic-188
788958690853885868295889184089
788958690853885868295889184089
CRYPTOGRAPHY RULES
vic
vic
substitution
{ "type": "keyword", "value": "ENIGMA" }
advanced
en
30
30
cipher_museum
0.2
public
null
null
cda-0017462
9.4.4 8.25.12 8.16.6 16.46.12 3.37.2 7.45.8 12.46.11 3.18.10 16.17.12 2.21.8 20.32.15 12.25.12 3.29.8 7.28.7 20.12.8 1.34.5 2.23.13 19.30.5 9.1.9 15.36.11 8.13.2 8.3.6 5.10.7 4.26.11 8.6.14 10.4.13 8.14.13 14.32.8 14.41.3 18.48.4 17.19.5 3.24.10 14.45.13 19.23.7 7.15.5 18.33.9 19.42.13 9.50.7 12.49.12 9.35.4 16.8.7 16....
9.4.4 8.25.12 8.16.6 16.46.12 3.37.2 7.45.8 12.46.11 3.18.10 16.17.12 2.21.8 20.32.15 12.25.12 3.29.8 7.28.7 20.12.8 1.34.5 2.23.13 19.30.5 9.1.9 15.36.11 8.13.2 8.3.6 5.10.7 4.26.11 8.6.14 10.4.13 8.14.13 14.32.8 14.41.3 18.48.4 17.19.5 3.24.10 14.45.13 19.23.7 7.15.5 18.33.9 19.42.13 9.50.7 12.49.12 9.35.4 16.8.7 16....
THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF
book_cipher
book_cipher
null
{}
medium
en
51
51
synthetic_educational
null
null
[ "book_cipher_attack", "triple_index_search" ]
Book cipher: coordinates (page.line.word) referencing a shared document.
purple-v3-0059
AWMYMJZIHOUPKJWHWDIUGELFXCJTUWEJDADDQYUZCJLYMTDFPQWBOWOJXLBADWERDJJGKYEFIO
AWMYMJZIHOUPKJWHWDIUGELFXCJTUWEJDADDQYUZCJLYMTDFPQWBOWOJXLBADWERDJJGKYEFIO
THE THIN RED LINE STOOD FIRM AT BALACLAVA AS THE RUSSIAN CAVALRY CHARGED ACROSS THE PLAIN
purple
purple
machine
{ "type": "seed", "value": "TOKYO" }
expert
en
74
74
cipher_museum
2.0
public
null
null
confederate-vigenere-090
TIASCRVLPDR
TIASCRVLPDR
RALLY AT DAWN
confederate_vigenere
confederate_vigenere
polyalphabetic
{ "type": "keyword", "value": "CIPHER" }
intermediate
en
11
11
cipher_museum
0.2
public
null
null
bazeries-v3-0007
CVOSIVDUKQYOKQ
CVOSIVDUKQYOKQ
MARCH TO VICTORY
bazeries
bazeries
transposition
{ "type": "integer", "value": 17 }
advanced
en
14
14
cipher_museum
2.0
public
null
null
one-time-pad-v2-0194
OKYIFGMAWDNAIDUBLRZNPGOPNOSATKBRCAHDEPWWGJCDSDXIZOGRHKQSXFCVRTNWPDRPWODSLPDHUF
OKYIFGMAWDNAIDUBLRZNPGOPNOSATKBRCAHDEPWWGJCDSDXIZOGRHKQSXFCVRTNWPDRPWODSLPDHUF
YOUR MISSION IF YOU CHOOSE TO ACCEPT IT IS TO EXTRACT THE AGENT FROM BEHIND ENEMY LINES TONIGHT
one_time_pad
one_time_pad
stream
{ "type": "pad", "value": "QWERTY (repeating)" }
expert
en
78
78
cipher_museum
2.0
public
null
null
cda-0017689
HILL CIPH ERUS ESLI NEAR ALGE ZRAT OENC RYPT BLOZ KSOF LETT ERSA LANT URIN GBRO KEEN IGMA WITH CRIZ SAND THEB OZBE MAZH INES LOWL X
HILL CIPH ERUS ESLI NEAR ALGE ZRAT OENC RYPT BLOZ KSOF LETT ERSA LANT URIN GBRO KEEN IGMA WITH CRIZ SAND THEB OZBE MAZH INES LOWL X
HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE SLOWLY
commercial_code
commercial_code
null
{}
hard
en
105
105
synthetic_educational
null
null
[ "codebook_frequency", "five_letter_group_analysis" ]
Commercial code: five-letter groups from a codebook, often ending in X or Z.
diana-v3-0546
QDOTQINFTYCAYBCQBP
QDOTQINFTYCAYBCQBP
TREASURE BURIED HERE
diana
diana
polyalphabetic
{ "type": "keyword", "value": "JUSTICE" }
intermediate
en
18
18
cipher_museum
2.0
public
null
null
jn25-v2-0179
09993 09902 09993 09901 09913 09994 09903 09906 09991 09993 09907 09906 09993 09904 09903 09906 09908 09993 09992 09901 09903 09910 09997 09902 09995 09908 09903 09911 09999 09906 09992 09995 09993 09908 09908 09913 09907 09990 09919 09906 09995 09991 09999 09910 09999 09900 09906 09913 09996 09999 09907 09991 09903 09...
09993 09902 09993 09901 09913 09994 09903 09906 09991 09993 09907 09906 09993 09904 09903 09906 09908 09993 09992 09901 09903 09910 09997 09902 09995 09908 09903 09911 09999 09906 09992 09995 09993 09908 09908 09913 09907 09990 09919 09906 09995 09991 09999 09910 09999 09900 09906 09913 09996 09999 09907 09991 09903 09...
ENEMY FORCES REPORTED MOVING TOWARD GETTYSBURG CAVALRY HAS CONFIRMED THE FULL SIGHTING
jn25
jn25
codebook
{ "type": "additive", "value": "99999" }
expert
en
375
449
cipher_museum
2.0
public
null
null
cda-0007691
PELCGBTENCUL ERJNEQF CNGVRAPR NAQ PNERSHY GUVAXVAT N GENAFCNERAG GBBY FUBHYQ FUBJ VGF ERNFBAVAT
PELCGBTENCUL ERJNEQF CNGVRAPR NAQ PNERSHY GUVAXVAT N GENAFCNERAG GBBY FUBHYQ FUBJ VGF ERNFBAVAT
CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING A TRANSPARENT TOOL SHOULD SHOW ITS REASONING
rot13
rot13
null
{ "shift": 13 }
hard
en
83
83
synthetic_educational
null
null
[]
alberti-disk-v2-0652
RLVLJQSBQJCYWUPE
RLVLJQSBQJCYWUPE
DIVIDE AND CONQUER
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 14 }
expert
en
16
16
cipher_museum
2.0
public
null
null
columnar-transposition-363
EAEGLASDTLAEHDHEN
EAEGLASDTLAEHDHEN
THE EAGLE HAS LANDED
columnar_transposition
columnar_transposition
transposition
{ "type": "keyword", "value": "PYTHON" }
intermediate
en
17
17
cipher_museum
0.2
public
null
null
chaocipher-v3-0402
NYTPKKZNSYTRWANEZKURGTVVHEKMTDGFBUUSEVZLNSGXDQZADDFEWQTFMCCPZDSKONBUTGHOVGSWUU
NYTPKKZNSYTRWANEZKURGTVVHEKMTDGFBUUSEVZLNSGXDQZADDFEWQTFMCCPZDSKONBUTGHOVGSWUU
THE BIRTHDAY PARADOX SHOWS THAT COLLISIONS IN HASH FUNCTIONS OCCUR FAR SOONER THAN EXPECTED
chaocipher
chaocipher
machine
{ "type": "keyword", "value": "JUSTICE" }
advanced
en
78
78
cipher_museum
2.0
public
null
null
monoalphabetic-v2-0758
SJOQAJEI HRPQ UI TIPQOLYIT
SJOQAJEI HRPQ UI TIPQOLYIT
CARTHAGE MUST BE DESTROYED
monoalphabetic
monoalphabetic
substitution
{ "type": "keyword", "value": "JUSTICE" }
beginner
en
23
26
cipher_museum
2.0
public
null
null
sigaba-v3-0185
YODEFOZGTRCOKYGZBMIIZQTVODXIPYKWZKWEQCOHLOOQZJUMJHKZQCSWZFVFYHQUTLBPDMWVZRIYRVWW
YODEFOZGTRCOKYGZBMIIZQTVODXIPYKWZKWEQCOHLOOQZJUMJHKZQCSWZFVFYHQUTLBPDMWVZRIYRVWW
THE MOLE BURIED DEEP IN THE INTELLIGENCE AGENCY PASSED VITAL SECRETS TO THE OTHER SIDE FOR YEARS
sigaba
sigaba
machine
{ "type": "seed", "value": "ARMY" }
expert
en
80
80
cipher_museum
2.0
public
null
null
cda-0008853
DJIUE UNHVM DCUTF PFYXK YLQBL BIFUH BUUZM BSXBY SRYGZ XLNAS CQYTA VXJSU MNNDM AVDDV KMNCN BYSMP FHP
DJIUE UNHVM DCUTF PFYXK YLQBL BIFUH BUUZM BSXBY SRYGZ XLNAS CQYTA VXJSU MNNDM AVDDV KMNCN BYSMP FHP
DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS EVERY SYSTEM NEEDS AN HONEST THREAT MODEL
trithemius
trithemius
null
{}
hard
en
83
83
synthetic_educational
null
null
[]
cda-0004930
TIGIV NKKUJ XEQFH JIVKM BZEKB DXPHF SNTJQ MOYOR HDUJL BGVPB IDYMG QKYNA PNBLU YTTDT WVCKD BPVRJ VHWYK EBRXL LVUOQ XHTNO AOL
TIGIV NKKUJ XEQFH JIVKM BZEKB DXPHF SNTJQ MOYOR HDUJL BGVPB IDYMG QKYNA PNBLU YTTDT WVCKD BPVRJ VHWYK EBRXL LVUOQ XHTNO AOL
THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN
trithemius
trithemius
null
{}
hard
en
103
103
synthetic_educational
null
null
[ "progressive_shift_detection", "frequency_analysis" ]
Trithemius: progressive Caesar (shift = letter position); no key needed.
cda-0016473
MTBI OQRP DNHF ALNF JZDY ANTY WCAL SZXZ ZIZH HHYQ SIEP EWFU UGNS NRXL PSSZ VAOA LKUW INUE MVRV OAUZ GLNL XJHN VGIF FLSC LFGY YUGC AEQV DZVV RYPR NEQY LPVD AVUL QMCB YYWQ IWPP GG
MTBI OQRP DNHF ALNF JZDY ANTY WCAL SZXZ ZIZH HHYQ SIEP EWFU UGNS NRXL PSSZ VAOA LKUW INUE MVRV OAUZ GLNL XJHN VGIF FLSC LFGY YUGC AEQV DZVV RYPR NEQY LPVD AVUL QMCB YYWQ IWPP GG
ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS
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.
alberti-disk-v2-0732
NLSJDEPSZMVPERFPVXAUWTCQDEUTONTWFSHNBXFXIIBUJFNICPHUPKVSSWQBIYUPEWEITIOVPN
NLSJDEPSZMVPERFPVXAUWTCQDEUTONTWFSHNBXFXIIBUJFNICPHUPKVSSWQBIYUPEWEITIOVPN
LIBERTÉ ÉGALITÉ FRATERNITÉ OU LA MORT CES MOTS DÉFINISSENT LA REVOLUTION FRANÇAISE DE MIL SEPT
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 14 }
expert
en
74
74
cipher_museum
2.0
public
null
null
cda-0015832
THAN-ZIE / GLOE-IH / A-KHA / DIBEH / CA-YEILTH / NO-DA-IH / WOL-LA-CHEE / GAH / DZEH / MOASI / TKIN / CLA-GI-AIH / LIN / DZEH / GAH / DZEH / TSAH / MOASI / GAH / TSAH-AS-ZIH / CLA-GI-AIH / THAN-ZIE / DIBEH / BE / TKIN / ...
THAN-ZIE / GLOE-IH / A-KHA / DIBEH / CA-YEILTH / NO-DA-IH / WOL-LA-CHEE / GAH / DZEH / MOASI / TKIN / CLA-GI-AIH / LIN / DZEH / GAH / DZEH / TSAH / MOASI / GAH / TSAH-AS-ZIH / CLA-GI-AIH / THAN-ZIE / DIBEH / BE / TKIN / ...
TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS
navajo_code
navajo_code
null
{}
hard
en
212
212
synthetic_educational
null
null
[ "codebook_frequency", "word_list_attack" ]
Navajo Code Talker cipher: Navajo words represent English letters.
playfair-v2-0050
HNKHOKHBYNMZKHOKHBQCDWQNTNMQTQEGRXLZCUUMSWUKYRDEQNUFLCFXCWHNKHOKHBSYQNFLFSKUUKXY
HNKHOKHBYNMZKHOKHBQCDWQNTNMQTQEGRXLZCUUMSWUKYRDEQNUFLCFXCWHNKHOKHBSYQNFLFSKUUKXY
GOOD NIGHT GOOD NIGHT PARTING IS SUCH SWEET SORROW THAT I SHALL SAY GOOD NIGHT TILL MORROW
playfair
playfair
polygraphic
{ "type": "keyword", "value": "PALACE" }
intermediate
en
80
80
cipher_museum
2.0
public
null
null
enigma-v2-1132
VBFEWPMHCORRZSEFZIPPSIZVSSLIQUPEZSKSBUTTDHHVAOJZOBKPYKQEXYVHZBATACUOZZZKHZNSDSYVIYFKEPPOOINFFLMBAKFPBFOMJDJZICBIIEBLJPFATKQLOXGWMUKPPPDYKMPVPQSSYECFMBYJUGCOWVSFHVZU
VBFEWPMHCORRZSEFZIPPSIZVSSLIQUPEZSKSBUTTDHHVAOJZOBKPYKQEXYVHZBATACUOZZZKHZNSDSYVIYFKEPPOOINFFLMBAKFPBFOMJDJZICBIIEBLJPFATKQLOXGWMUKPPPDYKMPVPQSSYECFMBYJUGCOWVSFHVZU
ULTRA INTELLIGENCE DERIVED FROM DECRYPTED GERMAN ENIGMA TRAFFIC INDICATES THAT ENEMY PANZER DIVISIONS ARE CONCENTRATED AT CALAIS CONFIRMING THE DECEPTION OPERATION FORTITUDE HAS SUCCEEDED
enigma
enigma
machine
{ "type": "rotor_start", "value": "AAB" }
expert
en
164
164
cipher_museum
2.0
public
null
null
cda-0015892
00975 00379 1637 06036 00398 5673 06038 2532 02922 1926 6336 1664 01327 06286 02580 01619 00411 3791 05101 2570 00374 0707 01607 06286 00705 07904 6364 2525 05731 01577 01656 5093 4744 06016 2905 6302 02855 4763 04483 6056 06284 2522 01665 05041 03821 0382 07879 1889 00314 02846 5669 1025 02861 05073 02587 01653 5694 1...
00975 00379 1637 06036 00398 5673 06038 2532 02922 1926 6336 1664 01327 06286 02580 01619 00411 3791 05101 2570 00374 0707 01607 06286 00705 07904 6364 2525 05731 01577 01656 5093 4744 06016 2905 6302 02855 4763 04483 6056 06284 2522 01665 05041 03821 0382 07879 1889 00314 02846 5669 1025 02861 05073 02587 01653 5694 1...
CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY
zimmermann
zimmermann
null
{}
hard
en
93
93
synthetic_educational
null
null
[ "codebook_frequency", "number_group_analysis" ]
Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher.
kl7-v3-0336
AZBDOZAFZYVCVTR
AZBDOZAFZYVCVTR
THE WIND IS WITH US
kl7
kl7
machine
{ "type": "seed", "value": "ALLIANCE" }
expert
en
15
15
cipher_museum
2.0
public
null
null
chaocipher-017
ASQAGCZRCROTENK
ASQAGCZRCROTENK
MEET AT THE OLD OAK
chaocipher
chaocipher
machine
{ "type": "keyword", "value": "CHAOCIPHER" }
advanced
en
15
15
cipher_museum
0.2
public
null
null
columnar-transposition-v2-0076
LSESEYSATDOCDURTGRONTERHMONOONAIDFRSIMWICDALNAUOFGALPDIDPAIHEMONATEETLTWRRRHN
LSESEYSATDOCDURTGRONTERHMONOONAIDFRSIMWICDALNAUOFGALPDIDPAIHEMONATEETLTWRRRHN
ALL UNITS PROCEED TO DESIGNATED RALLY POINTS AND AWAIT FURTHER ORDERS FROM HIGH COMMAND NOW
columnar_transposition
columnar_transposition
transposition
{ "type": "keyword", "value": "PALACE" }
intermediate
en
77
77
cipher_museum
2.0
public
null
null
wheatstone-v2-0209
TEAPRFNAMBIFOARTYFSATARKLIVFCFILKNALKDTEAWFIITMDABAKDFTLCLFKSTLIIBMASLKDTERALTS
TEAPRFNAMBIFOARTYFSATARKLIVFCFILKNALKDTEAWFIITMDABAKDFTLCLFKSTLIIBMASLKDTERALTS
THE PRICE OF LIBERTY IS ETERNAL VIGILANCE AND THE WILL TO DEFEND IT AGAINST ALL FOES AND THREATS
wheatstone
wheatstone
polygraphic
{ "type": "keyword", "value": "LONDON" }
advanced
en
79
79
cipher_museum
2.0
public
null
null
cda-0006741
ANLEBSNBKXELSHPIIRSMEHAEAYTEEGBAADTTRTSSSYTTYEWILNFSPXXLERDFNINCTHRHOHOANOONEEEHIDTTDTEXEXXCPQRIEHSPEAVNIWLSPSINCELAHTTXGIUOIXXPSEGRTHHEUPROGTHAROSADSHTREEIARNEHXXESCAPTPKEOAIETRUE
ANLEBSNBKXELSHPIIRSMEHAEAYTEEGBAADTTRTSSSYTTYEWILNFSPXXLERDFNINCTHRHOHOANOONEEEHIDTTDTEXEXXCPQRIEHSPEAVNIWLSPSINCELAHTTXGIUOIXXPSEGRTHHEUPROGTHAROSADSHTREEIARNEHXXESCAPTPKEOAIETRUE
A TRANSPARENT TOOL SHOULD SHOW ITS REASONING ATBASH ENCODES BY REVERSING THE ALPHABET THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS
stager_route
stager_route
null
{ "cols": 10 }
hard
en
180
180
synthetic_educational
null
null
[ "column_count_search", "route_pattern_search" ]
Route (Stager) cipher: write into rectangle, read via alternating column route.
jefferson-disk-v2-0290
XZCKNYXJGVWRIMKFSXNTINLHFUREZADZVKWHUTNVWTXZJZMVNHUYKVZEYEVIQMUQZCMHQTSDDCXAK
XZCKNYXJGVWRIMKFSXNTINLHFUREZADZVKWHUTNVWTXZJZMVNHUYKVZEYEVIQMUQZCMHQTSDDCXAK
NAVAL UNITS IN POSITION OFF THE COAST AWAITING SIGNAL TO COMMENCE SHORE BOMBARDMENT AT DAWN
jefferson_disk
jefferson_disk
disk
{ "type": "disk_order", "value": "1,3,5,2,4,6" }
expert
en
77
77
cipher_museum
2.0
public
null
null
argenti-v3-0027
14 41 22 71 32 45 36 57 44 75 56 65 66 51 73 44 14 82 24 88
14 41 22 71 32 45 36 57 44 75 56 65 66 51 73 44 14 82 24 88
THE COMPASS POINTS TRUE
argenti
argenti
nomenclator
{ "type": "seed", "value": "ROME" }
expert
en
40
59
cipher_museum
2.0
public
null
null
cda-0009394
XKBNAEJKUN NERMNWLN LXVNB KNOXAN LXWORMNWLN
XKBNAEJKUN NERMNWLN LXVNB KNOXAN LXWORMNWLN
OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE
gronsfeld
gronsfeld
null
{ "key": "99999" }
medium
en
39
39
synthetic_educational
null
null
[]
bazeries-v2-0758
LSVSAPGTOPMQNTEPMTXILNT
LSVSAPGTOPMQNTEPMTXILNT
CARTHAGE MUST BE DESTROYED
bazeries
bazeries
transposition
{ "type": "integer", "value": 71 }
advanced
en
23
23
cipher_museum
2.0
public
null
null
typex-v3-0399
ESVCXYBZLFOFSDCNMRLPJSECWDVRLLHGAOFJFAPQCXMAUOSCBUSHSSDRJDMOSQAJIEMVTQONCODTPIRO
ESVCXYBZLFOFSDCNMRLPJSECWDVRLLHGAOFJFAPQCXMAUOSCBUSHSSDRJDMOSQAJIEMVTQONCODTPIRO
THE ENIGMA MACHINE HAD AN ASTRONOMICAL NUMBER OF POSSIBLE SETTINGS MAKING IT SEEM UNBREAKABLE
typex
typex
machine
{ "type": "keyword", "value": "WINSTON" }
expert
en
80
80
cipher_museum
2.0
public
null
null
double-transposition-v2-0569
TANOEHASLENHGTHITATNYTLNRLWTGAISCEIRCRHINTVUNHIHLEOAHTCNEHEGDIOTIIURDMSRRB
TANOEHASLENHGTHITATNYTLNRLWTGAISCEIRCRHINTVUNHIHLEOAHTCNEHEGDIOTIIURDMSRRB
I CAN DO ALL THINGS THROUGH CHRIST WHICH STRENGTHENETH ME IN EVERY TRIAL AND TRIBULATION
double_transposition
double_transposition
transposition
{ "key1": "WISDOM", "key2": "COURAGE" }
advanced
en
74
74
cipher_museum
2.0
public
null
null
kl7-v3-0129
TNNDYGVKLFCJTFO
TNNDYGVKLFCJTFO
CHART THE UNKNOWN
kl7
kl7
machine
{ "type": "seed", "value": "LIBERTY" }
expert
en
15
15
cipher_museum
2.0
public
null
null