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
columnar-transposition-v2-1224
YOSHAEEEEEOESAEOBERPTEOTPPUSAATCLSEBAIQFWEFRRRDDMLRNTEDHHTRDHHEMECSDEIEWCYSP
YOSHAEEEEEOESAEOBERPTEOTPPUSAATCLSEBAIQFWEFRRRDDMLRNTEDHHTRDHHEMECSDEIEWCYSP
MARY QUEEN OF SCOTS WAS BEHEADED AFTER HER CIPHER LETTERS WERE DECODED BY THOMAS PHELIPPES
columnar_transposition
columnar_transposition
transposition
{ "type": "keyword", "value": "WISDOM" }
intermediate
en
76
76
cipher_museum
2.0
public
null
null
nomenclator-v3-0144
05 21 18 05 11 01
05 21 18 05 11 01
EUREKA
nomenclator
nomenclator
nomenclator
{ "type": "seed", "value": "PALACE" }
expert
en
12
17
cipher_museum
2.0
public
null
null
cda-0008639
GURZR FFNTR JNFUV QQRAO HGABG FRPHE RNZBQ RYPNA PYNFF VSLCN GGREA FOHGV GPNAN YFBOR JEBAT ZBQRE ARAPE LCGVB AVFAB GOEBX RAOLY RGGRE SERDH RAPL
GURZR FFNTR JNFUV QQRAO HGABG FRPHE RNZBQ RYPNA PYNFF VSLCN GGREA FOHGV GPNAN YFBOR JEBAT ZBQRE ARAPE LCGVB AVFAB GOEBX RAOLY RGGRE SERDH RAPL
THE MESSAGE WAS HIDDEN BUT NOT SECURE A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY
rot13
rot13
null
{ "shift": 13 }
hard
en
119
119
synthetic_educational
null
null
[]
double-transposition-v2-0070
EPALVLEAEUNSUBTSHTTORAHFTDNOTRHOUQEBHRMDBSEOOARNJVSETRARVMBOOEETMHYIAEC
EPALVLEAEUNSUBTSHTTORAHFTDNOTRHOUQEBHRMDBSEOOARNJVSETRARVMBOOEETMHYIAEC
QUOTH THE RAVEN NEVERMORE THE BIRD SAT ON THE BUST OF PALLAS JUST ABOVE MY CHAMBER DOOR
double_transposition
double_transposition
transposition
{ "key1": "PALACE", "key2": "BATTLE" }
advanced
en
71
71
cipher_museum
2.0
public
null
null
geez-monastic-v2-0016
QHZJMORMJLMJPL
QHZJMORMJLMJPL
COVER MY RETREAT
geez_monastic
geez_monastic
substitution
{ "type": "keyword", "value": "ETHIOPIA" }
advanced
en
14
14
cipher_museum
2.0
public
null
null
m209-v2-0005
CEGBQPDEYHERCZL
CEGBQPDEYHERCZL
CAVALRY ADVANCES
m209
m209
machine
{ "type": "seed", "value": "ARMY" }
expert
en
15
15
cipher_museum
2.0
public
null
null
cda-0006552
TIG DYYURMH MTBUSG UOLXHYO QFD KFA ZMYN APN ZWMVBIUOL BNNAID ZN BHIMSK JQYRPD NDEBZWL U GEKCZR GWQGYOVV CY PMPV AUKLXL DJACW OG ERMSIPLNXNQ ZSPILJXM GAQRDR GTHUZKUKH NTEGFXRLLBII
TIG DYYURMH MTBUSG UOLXHYO QFD KFA ZMYN APN ZWMVBIUOL BNNAID ZN BHIMSK JQYRPD NDEBZWL U GEKCZR GWQGYOVV CY PMPV AUKLXL DJACW OG ERMSIPLNXNQ ZSPILJXM GAQRDR GTHUZKUKH NTEGFXRLLBII
THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION
trithemius
trithemius
null
{}
hard
en
152
152
synthetic_educational
null
null
[ "progressive_shift_detection", "frequency_analysis" ]
Trithemius: progressive Caesar (shift = letter position); no key needed.
slidex-v2-0328
SLSXTHACIOWMRVYXGXWYFEGIYPTLSLIHUBXJACRXODLWAXMDVZNOXLBPPWVKXLLIFEZPLGZJYQZENY
SLSXTHACIOWMRVYXGXWYFEGIYPTLSLIHUBXJACRXODLWAXMDVZNOXLBPPWVKXLLIFEZPLGZJYQZENY
ALL UNITS PROCEED TO DESIGNATED RALLY POINTS AND AWAIT FURTHER ORDERS FROM HIGH COMMAND NOW
slidex
slidex
transposition
{ "type": "keyword", "value": "FREEDOM" }
advanced
en
78
78
cipher_museum
2.0
public
null
null
fractionated-morse-263
LCSFOUVAAYESIE
LCSFOUVAAYESIE
THE KING IS DEAD
fractionated_morse
fractionated_morse
fractionation
{ "type": "keyword", "value": "CRYPTIC" }
advanced
en
14
14
cipher_museum
0.2
public
null
null
kryptos-210
DVQOGBGZDET
DVQOGBGZDET
RALLY AT DAWN
kryptos
kryptos
polyalphabetic
{ "type": "keyword", "value": "CIPHER" }
advanced
en
11
11
cipher_museum
0.2
public
null
null
typex-159
XETJPYZPWAPTFFWNZZKGMEOGDASNJAPHEKAZMJMMRJN
XETJPYZPWAPTFFWNZZKGMEOGDASNJAPHEKAZMJMMRJN
FORTUNE FAVORS THE BOLD AND THE BRAVE WHO DARE TO ACT
typex
typex
machine
{ "type": "keyword", "value": "CIPHER" }
expert
en
43
43
cipher_museum
0.2
public
null
null
m94-v2-0198
CYGANECDAAQDTRWAPMHXYFZIVUUCCQEIVQEIVJCNMPHCNFCDAWJIPXNMBAAXLVIVGNHPDPYJCRPFWB
CYGANECDAAQDTRWAPMHXYFZIVUUCCQEIVQEIVJCNMPHCNFCDAWJIPXNMBAAXLVIVGNHPDPYJCRPFWB
YOUR MISSION IF YOU CHOOSE TO ACCEPT IT IS TO EXTRACT THE AGENT FROM BEHIND ENEMY LINES TONIGHT
m94
m94
machine
{ "type": "seed", "value": "FREEDOM" }
expert
en
78
78
cipher_museum
2.0
public
null
null
bazeries-v3-0170
YIYROFTMGMYATGITYAEMPJPNYOYAMAPTARQJMJYRETBRBPPQOTRIXPVBYFBGYNBUAPTKQMHJIB
YIYROFTMGMYATGITYAEMPJPNYOYAMAPTARQJMJYRETBRBPPQOTRIXPVBYFBGYNBUAPTKQMHJIB
GENERAL SHERMAN MARCHED TO THE SEA THROUGH GEORGIA CUTTING A SIXTY MILE WIDE PATH OF RUIN
bazeries
bazeries
transposition
{ "type": "integer", "value": 23 }
advanced
en
74
74
cipher_museum
2.0
public
null
null
lorenz-v2-0312
ITWASTHEBESTOFTIMESITWASANAGEOFWISDOMANDANAGEOFUTTERFOOLISHNESS
ITWASTHEBESTOFTIMESITWASANAGEOFWISDOMANDANAGEOFUTTERFOOLISHNESS
IT WAS THE BEST OF TIMES IT WAS AN AGE OF WISDOM AND AN AGE OF UTTER FOOLISHNESS
lorenz
lorenz
machine
{ "type": "seed", "value": "COLOSSUS" }
expert
en
63
63
cipher_museum
2.0
public
null
null
adfgvx-v2-0623
GDGVDFFVAGAGAGADAFAFADFGDADDAAVAAADDFDDDAFAGVAFGAGAGDAAAAAADXDADXDADDVVGDVXVVAVGFVVADXGVXAVVGADGVDXVXFDADDDGFDDFXVFGXGAAADVFDAAFDGAAGADADAFDAFAGFAAAGDADAFFFFAAGFAGAAAFDAFFGFADGXFVVXDVFADVFAVGVVFVFDDGXXAVVGAGFGVAFFVFVXDVDXGAXGGFXDVDDVVVGXGAVVGDDGDVVDGXDDVGXVVVDFXVGDFFFDGGGXXDDGXDDGDVFVVVGDGDDDAFFAGFADGFADGFFGFADAGADAAAF...
GDGVDFFVAGAGAGADAFAFADFGDADDAAVAAADDFDDDAFAGVAFGAGAGDAAAAAADXDADXDADDVVGDVXVVAVGFVVADXGVXAVVGADGVDXVXFDADDDGFDDFXVFGXGAAADVFDAAFDGAAGADADAFDAFAGFAAAGDADAFFFFAAGFAGAAAFDAFFGFADGXFVVXDVFADVFAVGVVFVFDDGXXAVVGAGFGVAFFVFVXDVDXGAXGGFXDVDDVVVGXGAVVGDDGDVVDGXDDVGXVVVDFXVGDFFFDGGGXXDDGXDDGDVFVVVGDGDDDAFFAGFADGFADGFFGFADAGADAAAF...
THE HISTORY OF CRYPTOLOGY IS A BATTLE OF WITS BETWEEN THOSE WHO MAKE CODES AND THOSE WHO BREAK THEM FOR EVERY SYSTEM DEVISED BY A CUNNING ENCIPHERER A PATIENT CRYPTANALYST HAS FOUND A METHOD TO REVEAL ITS SECRETS
adfgvx
adfgvx
fractionation
{ "polybius": "KAISER", "columnar": "BERLIN" }
advanced
en
350
350
cipher_museum
2.0
public
null
null
cda-0018166
chedy choldaiin sharal okshy ytedy dal dainy sheedy otedy daiin chor shal chor okain oxed shal aiiin sharal okain sheol oxed choldaiin sheedy qokeedy okedy oror ykcheol ypchol qokal qokal daiin chol dal otol sheedy okshy okeedy shor shaiin aiiin dainy ypchol otain otol okain qokeedy shaiin rcheol raiin otol raiin ytedy...
chedy choldaiin sharal okshy ytedy dal dainy sheedy otedy daiin chor shal chor okain oxed shal aiiin sharal okain sheol oxed choldaiin sheedy qokeedy okedy oror ykcheol ypchol qokal qokal daiin chol dal otol sheedy okshy okeedy shor shaiin aiiin dainy ypchol otain otol okain qokeedy shaiin rcheol raiin otol raiin ytedy...
A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS
voynich_render
voynich_render
null
{}
hard
en
370
370
synthetic_educational
null
null
[ "statistical_analysis", "unsolved" ]
Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output.
slidex-075
QZULHQSPFIXUHWMD
QZULHQSPFIXUHWMD
OPERATION BEGINS
slidex
slidex
transposition
{ "type": "keyword", "value": "CIPHER" }
advanced
en
16
16
cipher_museum
0.2
public
null
null
gronsfeld-v2-0039
UPSQFEPBXBZBMMIBOETCSBDF
UPSQFEPBXBZBMMIBOETCSBDF
TORPEDO AWAY ALL HANDS BRACE
gronsfeld
gronsfeld
polyalphabetic
{ "type": "numeric", "value": "11111" }
intermediate
en
24
24
cipher_museum
2.0
public
null
null
gronsfeld-v3-0087
UIFFOJHNBNBDIJOFIBEBOBTUSPOPNJDBMOVNCFSPGQPTTJCMFTFUUJOHTNBLJOHJUTFFNVOCSFBLBCMF
UIFFOJHNBNBDIJOFIBEBOBTUSPOPNJDBMOVNCFSPGQPTTJCMFTFUUJOHTNBLJOHJUTFFNVOCSFBLBCMF
THE ENIGMA MACHINE HAD AN ASTRONOMICAL NUMBER OF POSSIBLE SETTINGS MAKING IT SEEM UNBREAKABLE
gronsfeld
gronsfeld
polyalphabetic
{ "type": "numeric", "value": "11111" }
intermediate
en
80
80
cipher_museum
2.0
public
null
null
adfgvx-v3-0212
XAFFXFFGXDDDGDDAAVGFDDDXFAAVAFXDDVADAAVD
XAFFXFFGXDDDGDDAAVGFDDDXFAAVAFXDDVADAAVD
THE LEGIONS STAND READY
adfgvx
adfgvx
fractionation
{ "polybius": "TRIUMPH", "columnar": "JUSTICE" }
advanced
en
40
40
cipher_museum
2.0
public
null
null
fractionated-morse-168
CEDTWMAHVWMLGDLMSVLKPMISURBRQVVDTWMARUIDNTVLKPNBUGVWNPIBMIMSURUSPMGX
CEDTWMAHVWMLGDLMSVLKPMISURBRQVVDTWMARUIDNTVLKPNBUGVWNPIBMIMSURUSPMGX
IF YOU KNOW BOTH YOURSELF AND YOUR ENEMY YOU NEED NOT FEAR THE RESULT
fractionated_morse
fractionated_morse
fractionation
{ "type": "keyword", "value": "SECRET" }
advanced
en
68
68
cipher_museum
0.2
public
null
null
bazeries-v2-0669
TYJLHOSWSRSHTGSNDDYXSLIM
TYJLHOSWSRSHTGSNDDYXSLIM
TORPEDO AWAY ALL HANDS BRACE
bazeries
bazeries
transposition
{ "type": "integer", "value": 67 }
advanced
en
24
24
cipher_museum
2.0
public
null
null
argenti-v2-0319
39 44 75 20 11 41 28 49 71 38 44 39 38 23 49 29 57 46 77 11 63 42 28 88 75 59 11 20 28 87 86 11 44 63 38 57 42 59 28 11 87 27 75 20 63 44 88 57 87 77 36 38 28 33 65 16 63 33 13 58 69 44 42 59 11 24 87 21 28 29 15 88 11 28 22
39 44 75 20 11 41 28 49 71 38 44 39 38 23 49 29 57 46 77 11 63 42 28 88 75 59 11 20 28 87 86 11 44 63 38 57 42 59 28 11 87 27 75 20 63 44 88 57 87 77 36 38 28 33 65 16 63 33 13 58 69 44 42 59 11 24 87 21 28 29 15 88 11 28 22
IN THE BEGINNING GOD CREATED THE HEAVEN AND THE EARTH AND DARKNESS WAS UPON THE FACE OF DEEP
argenti
argenti
nomenclator
{ "type": "seed", "value": "VATICAN" }
expert
en
150
224
cipher_museum
2.0
public
null
null
kryptos-031
WFJBUIDHFBHBSRTIBACGLSFNIIRUDFUABNGTBNQVJZAYGFOJGTFFHXKGL
WFJBUIDHFBHBSRTIBACGLSFNIIRUDFUABNGTBNQVJZAYGFOJGTFFHXKGL
WE HOLD THESE TRUTHS TO BE SELF EVIDENT THAT ALL MEN ARE CREATED EQUAL
kryptos
kryptos
polyalphabetic
{ "type": "keyword", "value": "KRYPTOS" }
advanced
en
57
57
cipher_museum
0.2
public
null
null
cda-0004866
DLCU PJJL HQSJ MGJS DDWZ FANT GLNP TSTA KMSH YWZX DBKH GJPB KXHA WGMF ESIT CITS TKMQ GIBQ DRWH GMMQ GIFR FLRI UZHN FEYM ODXQ MVGM PWLC ELLU DSKT AJMG BWVM DMFP IEEL XEMX EUFE GQVL RKZA HDVG QPDS YEIK L
DLCU PJJL HQSJ MGJS DDWZ FANT GLNP TSTA KMSH YWZX DBKH GJPB KXHA WGMF ESIT CITS TKMQ GIBQ DRWH GMMQ GIFR FLRI UZHN FEYM ODXQ MVGM PWLC ELLU DSKT AJMG BWVM DMFP IEEL XEMX EUFE GQVL RKZA HDVG QPDS YEIK L
THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS
autokey
autokey
null
{ "primer": "KEY" }
hard
en
161
161
synthetic_educational
null
null
[ "running_key_analysis", "index_of_coincidence" ]
Autokey: Vigenère where the plaintext extends the key — harder to Kasiski-attack.
adfgx-080
AGAGGGAXXXDGGGFAXGFF
AGAGGGAXXXDGGGFAXGFF
TRUST NO ONE
adfgx
adfgx
fractionation
{ "polybius": "CIPHER", "columnar": "MUSEUM" }
advanced
en
20
20
cipher_museum
0.2
public
null
null
adfgvx-v3-0480
DAFGFDAAAVAADAAFDFDFAGDAGVVDDGFVFDADXVVDVGGGDFDADFFAAFADDDFFAFGFAAAAFGDAAFVXXDDDDXXFFFGVDGXDVVGXXADGDDVVXXFFGDGVXXGDVDVVVVVAAFGFGGAAADAAADAADFFFDAAG
DAFGFDAAAVAADAAFDFDFAGDAGVVDDGFVFDADXVVDVGGGDFDADFFAAFADDDFFAFGFAAAAFGDAAFVXXDDDDXXFFFGVDGXDVVGXXADGDDVVXXFFGDGVXXGDVDVVVVVAAFGFGGAAADAAADAADFFFDAAG
GENERAL PATTON LED THE THIRD ARMY IN A DARING SWEEP ACROSS FRANCE FOLLOWING THE BREAKOUT
adfgvx
adfgvx
fractionation
{ "polybius": "KAISER", "columnar": "BERLIN" }
advanced
en
148
148
cipher_museum
2.0
public
null
null
cda-0019133
05095 01617 1612 05720 5699 01572 6954 2864 01579 7289 00386 04492 1279 5700 01650 05104 5735 4713 01293 06642 01000 2921 0634 2840 3782 02859 6376 7944 4100 00314 6301 6291 1624 05673 2852 4404 5712 1665 6065 1627 00351 5702 1005 2546 6281 2580 01579 1329 1659 6355 1614 01011 6303 2871 06935 1644 5976 06334 06650 0131...
05095 01617 1612 05720 5699 01572 6954 2864 01579 7289 00386 04492 1279 5700 01650 05104 5735 4713 01293 06642 01000 2921 0634 2840 3782 02859 6376 7944 4100 00314 6301 6291 1624 05673 2852 4404 5712 1665 6065 1627 00351 5702 1005 2546 6281 2580 01579 1329 1659 6355 1614 01011 6303 2871 06935 1644 5976 06334 06650 0131...
PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS
zimmermann
zimmermann
null
{}
hard
en
89
89
synthetic_educational
null
null
[ "codebook_frequency", "number_group_analysis" ]
Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher.
solitaire-v3-0273
OUEUFYJPRXTWZIBQYBBSWQDQCYXJEJWHCGCFXDPGUZZAIHDBPHWPEIOUUSHSRZHVOZROLZRPMDV
OUEUFYJPRXTWZIBQYBBSWQDQCYXJEJWHCGCFXDPGUZZAIHDBPHWPEIOUUSHSRZHVOZROLZRPMDV
THE BATTLE OF GETTYSBURG LASTED THREE DAYS AND COST OVER FIFTY THOUSAND CASUALTIES TOTAL
solitaire
solitaire
stream
{ "type": "passphrase", "value": "PONTIFEX" }
expert
en
75
75
cipher_museum
2.0
public
null
null
cda-0007547
MOVPUETSMOKDOHSVBMRTBGMUJPBUTNUWOYSVELLUAXJECUBTHGYOACMQKAYLESFYIVLCOUKBXPEPHECRDEVLZEEXJCJTAMTUCHLQLDNATXYLEXWLFEEHOIGXL
MOVPUETSMOKDOHSVBMRTBGMUJPBUTNUWOYSVELLUAXJECUBTHGYOACMQKAYLESFYIVLCOUKBXPEPHECRDEVLZEEXJCJTAMTUCHLQLDNATXYLEXWLFEEHOIGXL
FAIL CLOSED IS A POSTURE NOT A SLOGAN CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS
autokey
autokey
null
{ "primer": "HONEST" }
hard
en
121
121
synthetic_educational
null
null
[]
slidex-021
KCSWWXQGFWAJTXRJYL
KCSWWXQGFWAJTXRJYL
THE BRIDGE IS SECURED
slidex
slidex
transposition
{ "type": "keyword", "value": "SECRET" }
advanced
en
18
18
cipher_museum
0.2
public
null
null
gronsfeld-v2-0669
CWYVJMWHCFHISRMJVKYGAIJK
CWYVJMWHCFHISRMJVKYGAIJK
TORPEDO AWAY ALL HANDS BRACE
gronsfeld
gronsfeld
polyalphabetic
{ "type": "numeric", "value": "98765" }
intermediate
en
24
24
cipher_museum
2.0
public
null
null
chaocipher-106
WPRNIFWKGVSYUEEIMOLNLHCRTEEDSQMUYHRVYDDZYRKPGPEKTVAGGQTAK
WPRNIFWKGVSYUEEIMOLNLHCRTEEDSQMUYHRVYDDZYRKPGPEKTVAGGQTAK
FOUR SCORE AND SEVEN YEARS AGO OUR FATHERS BROUGHT FORTH THIS NATION
chaocipher
chaocipher
machine
{ "type": "keyword", "value": "CIPHER" }
advanced
en
57
57
cipher_museum
0.2
public
null
null
playfair-vf-0065
AQFQTQGUGIPKRTRTDNKGLBNDAFYQNQQMGPVGBFTIOQNZONTGNULTBGCNORVGPCOKIGFQ
AQFQTQGUGIPKRTRTDNKGLBNDAFYQNQQMGPVGBFTIOQNZONTGNULTBGCNORVGPCOKIGFQ
WHATSOEVER YE DO DO IT HEARTILY AS TO THE LORD AND NOT UNTO MEN FOR HIS GLORY IS GREAT
playfair
playfair
polygraphic
{ "type": "keyword", "value": "PLAYFAIR" }
intermediate
en
68
68
cipher_museum
2.0
public
null
null
purple-155
ELHCBNSSAAYKDBJTFQWPGZXEJFEQVBPEVDVJFHQSKN
ELHCBNSSAAYKDBJTFQWPGZXEJFEQVBPEVDVJFHQSKN
IN WAR THE MORAL IS TO THE PHYSICAL AS THREE IS TO ONE
purple
purple
machine
{ "type": "seed", "value": "SECRET" }
expert
en
42
42
cipher_museum
0.2
public
null
null
joseon-yeokhak-v3-0361
ALOSKSTJAYZLUGDVVSQAFSHJADSFVLZWUDGUCKOWJWKLJACAFYLZAJLWWFSUJGKKLZWUALQ
ALOSKSTJAYZLUGDVVSQAFSHJADSFVLZWUDGUCKOWJWKLJACAFYLZAJLWWFSUJGKKLZWUALQ
IT WAS A BRIGHT COLD DAY IN APRIL AND THE CLOCKS WERE STRIKING THIRTEEN ACROSS THE CITY
joseon_yeokhak
joseon_yeokhak
substitution
{ "type": "keyword", "value": "DYNASTY" }
beginner
en
71
71
cipher_museum
2.0
public
null
null
vernam-v2-0044
CPYDVIYKQNWLZLHXCVKUYAKOCSHFKUHJGAPBDSQIOAYRFMHZRBPSATVHHJGAPKEEAAQT
CPYDVIYKQNWLZLHXCVKUYAKOCSHFKUHJGAPBDSQIOAYRFMHZRBPSATVHHJGAPKEEAAQT
COWARDS DIE MANY TIMES BEFORE THEIR DEATHS THE VALIANT NEVER TASTE DEATH BUT ONCE
vernam
vernam
stream
{ "type": "pad", "value": "ABCDEFGH (repeating)" }
expert
en
68
68
cipher_museum
2.0
public
null
null
one-time-pad-v2-0201
TAYKLABTOCDMEJXHUVPRFPYFEIUHXNXLHMGHTWWXFBBMSTQBPOQFHQXQXZLLSGLAFMFBBKXLBPCMG
TAYKLABTOCDMEJXHUVPRFPYFEIUHXNXLHMGHTWWXFBBMSTQBPOQFHQXQXZLLSGLAFMFBBKXLBPCMG
DEUTSCHLAND UBER ALLES IN DER WELT WENN ES STETS ZU SCHUTZ UND TRUTZE BRÜDERLICH ZUSAMMENHÄLT
one_time_pad
one_time_pad
stream
{ "type": "pad", "value": "QWERTY (repeating)" }
expert
en
77
77
cipher_museum
2.0
public
null
null
purple-v3-0258
ZGZIOPAPBSKUSSXAJEJOHZDLYELYCLQQCLXESSVUKJICEUYAGGEYCOTQNILZUMRRHEQI
ZGZIOPAPBSKUSSXAJEJOHZDLYELYCLQQCLXESSVUKJICEUYAGGEYCOTQNILZUMRRHEQI
IN MY BEGINNING IS MY END AND IN MY END IS MY BEGINNING AS THE QUEEN OF SCOTS KNEW WELL
purple
purple
machine
{ "type": "seed", "value": "SAKURA" }
expert
en
68
68
cipher_museum
2.0
public
null
null
cda-0003407
OEHGR SBEPR JBEXF BAYLJ URAGU RXRLF CNPRV FFZNY YPELC GBTEN CULER JNEQF CNGVR APRNA QPNER SHYGU VAXVA T
OEHGR SBEPR JBEXF BAYLJ URAGU RXRLF CNPRV FFZNY YPELC GBTEN CULER JNEQF CNGVR APRNA QPNER SHYGU VAXVA T
BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING
rot13
rot13
null
{ "shift": 13 }
hard
en
86
86
synthetic_educational
null
null
[ "brute_force_26", "self_inverse_check" ]
ROT-13 is Caesar with shift 13 — it is its own inverse.
sigaba-v2-0440
BBITCKLODGLVJCGZLGGVEVBCBEBAQMYEZMWQQOIFZMSVNKSTQLXPBEYNSAIRJTHVAQJNCKUJBIRLV
BBITCKLODGLVJCGZLGGVEVBCBEBAQMYEZMWQQOIFZMSVNKSTQLXPBEYNSAIRJTHVAQJNCKUJBIRLV
THE LORD IS MY SHEPHERD I SHALL NOT WANT HE MAKETH ME LIE DOWN IN GREEN PASTURES BY STILL WATERS
sigaba
sigaba
machine
{ "type": "seed", "value": "LIBERTY" }
expert
en
77
77
cipher_museum
2.0
public
null
null
cda-0013188
. . .... .... .... .. . . ... ... .... ... ... ..... . . .... .. . ..... ... ... .... .... .... .... ... .... ... .... ... . .... ... .. ... ... .... .... ..... ... . . .... .... ... .. ... ... .... ..... .. .. .... .... .... .... ... .... .. . ..... . . .... ... ... .... ... ... .. ....
. . .... .... .... .. . . ... ... .... ... ... ..... . . .... .. . ..... ... ... .... .... .... .... ... .... ... .... ... . .... ... .. ... ... .... .... ..... ... . . .... .... ... .. ... ... .... ..... .. .. .... .... .... .... ... .... .. . ..... . . .... ... ... .... ... ... .. ....
A TRANSPARENT TOOL SHOULD SHOW ITS REASONING FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN
tap_code
tap_code
null
{}
hard
en
128
128
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.
hill-v3-0004
OXPDQKQMZGTZNNQDMIZO
OXPDQKQMZGTZNNQDMIZO
THE LEGIONS STAND READY
hill
hill
polygraphic
{ "a": 3, "b": 5, "c": 2, "d": 9 }
advanced
en
20
20
cipher_museum
2.0
public
null
null
cda-0006673
PNBR SNEO LUNA PHCN ATSE DIIU CAAE ACPO AODR AYER LNBI CDTR RHLB RDEL SREI RSPH ITEY SYER EFTT RPTE THLF ECPW BTET UOEE RYSI EEFR ITII SCEN SMVO METR TETP STUE TCDE SIDA AUST RWHD HSRI TACX EUTR TMEE OEIT AROI MUXW CTCI ARNS RGWL ONOE RXAI EHOP TTQE ROPR ANNE X
PNBR SNEO LUNA PHCN ATSE DIIU CAAE ACPO AODR AYER LNBI CDTR RHLB RDEL SREI RSPH ITEY SYER EFTT RPTE THLF ECPW BTET UOEE RYSI EEFR ITII SCEN SMVO METR TETP STUE TCDE SIDA AUST RWHD HSRI TACX EUTR TMEE OEIT AROI MUXW CTCI ARNS RGWL ONOE RXAI EHOP TTQE ROPR ANNE X
PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS
scytale
scytale
null
{ "cols": 11 }
hard
en
209
209
synthetic_educational
null
null
[ "column_count_search", "anagram_recovery" ]
Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter.
cda-0011768
C TPLGT EHO KNIUZJNA XCAUMTVU IVB KB EHO INAQ IF ETWPN BV CNHPOM EQROFZ CXRSJMU I NPOMCZ HBOKVQQU UW GIEO MMVBGY PJUMTCBJNM GCJLGVEL DWOMU IFNQZG JPVHQFLOKG
C TPLGT EHO KNIUZJNA XCAUMTVU IVB KB EHO INAQ IF ETWPN BV CNHPOM EQROFZ CXRSJMU I NPOMCZ HBOKVQQU UW GIEO MMVBGY PJUMTCBJNM GCJLGVEL DWOMU IFNQZG JPVHQFLOKG
A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE
gronsfeld
gronsfeld
null
{ "key": "271828" }
hard
en
131
131
synthetic_educational
null
null
[]
adfgvx-v2-0455
FADFDDAVAVAAVFDVADGVFFVFFGFGFAVAAAADFFVDDGFGAFXDFADDAGFVXGDGFDFAGAFVXAADDAGDFGFADFAADAVDFFGGDFGXADAVAXGVAFDFDAGVDADFGDGDDFAFGAFDAVAXGFAVDXAXDDDAFVAFVAFDDX
FADFDDAVAVAAVFDVADGVFFVFFGFGFAVAAAADFFVDDGFGAFXDFADDAGFVXGDGFDFAGAFVXAADDAGDFGFADFAADAVDFFGGDFGXADAVAXGVAFDFDAGVDADFGDGDDFAFGAFDAVAXGFAVDXAXDDDAFVAFVAFDDX
SUPPLY LINES HAVE BEEN CUT RATIONS FOR THREE DAYS ONLY AWAIT RESUPPLY OR BREAK THROUGH LINES
adfgvx
adfgvx
fractionation
{ "polybius": "DRAGON", "columnar": "THUNDER" }
advanced
en
154
154
cipher_museum
2.0
public
null
null
nihilist-v2-0344
46 57 57 24 36 40 53 45 26 90 25 36 56 64 44 25 67 34 24 67 64 26 25 67 43 25 56 64 36 25 67 53 56 37 73 26 47 77 53 56 37 55 55 48 77 52 58 67 75 25 35 57 24 55 50 45 34 37 86 24 24 38 64 58 56 88 23 34 68 84 45 26 90 53 56 37 43 35 27 87 45 58 46 44 45 59 77 53 24 67 75 25 25 67 24 55 59 77 24 57 70 54 28 57 74 56 26...
46 57 57 24 36 40 53 45 26 90 25 36 56 64 44 25 67 34 24 67 64 26 25 67 43 25 56 64 36 25 67 53 56 37 73 26 47 77 53 56 37 55 55 48 77 52 58 67 75 25 35 57 24 55 50 45 34 37 86 24 24 38 64 58 56 88 23 34 68 84 45 26 90 53 56 37 43 35 27 87 45 58 46 44 45 59 77 53 24 67 75 25 25 67 24 55 59 77 24 57 70 54 28 57 74 56 26...
FOR I AM PERSUADED THAT NEITHER DEATH NOR LIFE NOR ANGELS NOR PRINCIPALITIES NOR POWERS NOR THINGS PRESENT NOR THINGS TO COME NOR HEIGHT NOR DEPTH NOR ANY OTHER CREATURE SHALL BE ABLE TO SEPARATE US FROM THE LOVE OF GOD
nihilist
nihilist
fractionation
{ "polybius": "TRIUMPH", "keyword": "JUSTICE" }
advanced
en
358
536
cipher_museum
2.0
public
null
null
porta-v3-0405
MTNKZSJWXBSEHFAYEEEQXBSNPTCZRTDEAYOEXNRQSLXCXTDTXEXUSBKPRCVPJENVKPHTXJRMMTWSKERTOAQCOPAKDHSENTSCJPOJGLXNOVMPYNXAWVREMCVPJPSKMVJWXBSPHTRZTTVXUVDEBPHUFWOABAEFSEIWVPFAOJSDI
MTNKZSJWXBSEHFAYEEEQXBSNPTCZRTDEAYOEXNRQSLXCXTDTXEXUSBKPRCVPJENVKPHTXJRMMTWSKERTOAQCOPAKDHSENTSCJPOJGLXNOVMPYNXAWVREMCVPJPSKMVJWXBSPHTRZTTVXUVDEBPHUFWOABAEFSEIWVPFAOJSDI
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
porta
porta
polyalphabetic
{ "type": "keyword", "value": "VENICE" }
intermediate
en
169
169
cipher_museum
2.0
public
null
null
cda-0019755
DYONL GGCHN WCCVS WVNZY PFMER OBWET RULUV CFPXD TFYWY PWHYA CRNLB SQLID KUYXM MTKOE WENKH ZMKAG AGXIU WZYWE LQRHB LUIQF EWMGY ZITDK LFOQJ OPPJY LHUIG MI
DYONL GGCHN WCCVS WVNZY PFMER OBWET RULUV CFPXD TFYWY PWHYA CRNLB SQLID KUYXM MTKOE WENKH ZMKAG AGXIU WZYWE LQRHB LUIQF EWMGY ZITDK LFOQJ OPPJY LHUIG MI
THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY EVERY SYSTEM NEEDS AN HONEST THREAT MODEL OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE
one_time_pad
one_time_pad
null
{}
hard
en
127
127
synthetic_educational
null
null
[ "information_theoretic_proof", "key_reuse_attack" ]
One-time pad: theoretically unbreakable if key is truly random and never reused.
geheimschreiber-v2-0127
UJPCXHWJJYBZ
UJPCXHWJJYBZ
THE DIE IS CAST
geheimschreiber
geheimschreiber
machine
{ "type": "seed", "value": "KAISER" }
expert
en
12
12
cipher_museum
2.0
public
null
null
fialka-v3-0121
GLIAFIRIKTNRWNKVNYGN
GLIAFIRIKTNRWNKVNYGN
THE KING DEMANDS FEALTY
fialka
fialka
machine
{ "type": "seed", "value": "KREMLIN" }
expert
en
20
20
cipher_museum
2.0
public
null
null
confederate-vigenere-v3-0476
EHVRRVMHTCEWZEJTWRTXYFEDNEFRJEQAWCCAOADPRRJRJDPKFGSDXSLLFRZDMIYXEXAGRJKEMS
EHVRRVMHTCEWZEJTWRTXYFEDNEFRJEQAWCCAOADPRRJRJDPKFGSDXSLLFRZDMIYXEXAGRJKEMS
CHARGE OF THE LIGHT BRIGADE INTO THE VALLEY OF DEATH RODE THE SIX HUNDRED BRAVE CAVALIERS
confederate_vigenere
confederate_vigenere
polyalphabetic
{ "type": "keyword", "value": "CAVALRY" }
intermediate
en
74
74
cipher_museum
2.0
public
null
null
cda-0003154
FBKO GQUZMM SD M CCHJLJX HJP X QKOHCQ
FBKO GQUZMM SD M CCHJLJX HJP X QKOHCQ
FAIL CLOSED IS A POSTURE NOT A SLOGAN
trithemius
trithemius
null
{}
medium
en
30
30
synthetic_educational
null
null
[ "progressive_shift_detection", "frequency_analysis" ]
Trithemius: progressive Caesar (shift = letter position); no key needed.
gronsfeld-v3-0782
AIMQVSZBJQUHVGKLTACZFGWTBOFBTQBNXJWMFDKTPTNQZNPWFULOBQLVOWVPPOOCBHMT
AIMQVSZBJQUHVGKLTACZFGWTBOFBTQBNXJWMFDKTPTNQZNPWFULOBQLVOWVPPOOCBHMT
THE ONLY THING NECESSARY FOR THE TRIUMPH OF EVIL IS FOR GOOD MEN TO DO NOTHING AT ALL
gronsfeld
gronsfeld
polyalphabetic
{ "type": "numeric", "value": "71828" }
intermediate
en
68
68
cipher_museum
2.0
public
null
null
columnar-transposition-it-006
LIOEIIIUUAIENATTINLDITTIIORAGIGNNILNRTMCEUIDTOSBGDEI
LIOEIIIUUAIENATTINLDITTIIORAGIGNNILNRTMCEUIDTOSBGDEI
TUTTI GLI UOMINI NASCONO LIBERI ED EGUALI IN DIGNITA E DIRITTI
columnar_transposition
columnar_transposition
transposition
{ "type": "keyword", "value": "KEYWORD" }
intermediate
it
52
52
cipher_museum
0.2
public
null
null
m94-v3-0083
RZNDLPTQVWZXITWJWEGBIRQPYIVBKQGGRCJORSPDGUMQYXJDMVCVVGWUAQGIGJLFUQIYMZXCDWPOU
RZNDLPTQVWZXITWJWEGBIRQPYIVBKQGGRCJORSPDGUMQYXJDMVCVVGWUAQGIGJLFUQIYMZXCDWPOU
THE RIGHT OF THE PEOPLE TO KEEP AND BEAR ARMS SHALL NOT BE INFRINGED BY THE FEDERAL GOVERNMENT
m94
m94
machine
{ "type": "seed", "value": "ARMY" }
expert
en
77
77
cipher_museum
2.0
public
null
null
columnar-transposition-v3-0028
OEOHETISWFLEHILEINTUESDRYTT
OEOHETISWFLEHILEINTUESDRYTT
DONT FIRE TILL YOU SEE THE WHITES
columnar_transposition
columnar_transposition
transposition
{ "type": "keyword", "value": "PALACE" }
intermediate
en
27
27
cipher_museum
2.0
public
null
null
fractionated-morse-156
ARBGXSBQNLRQCGPBMCMNIBNDCARBGXSBWUIAIGQNLLDDMQBQCHMJQCAHMQBC
ARBGXSBQNLRQCGPBMCMNIBNDCARBGXSBWUIAIGQNLLDDMQBQCHMJQCAHMQBC
ALL THE WORLDS A STAGE AND ALL THE MEN AND WOMEN MERELY PLAYERS
fractionated_morse
fractionated_morse
fractionation
{ "type": "keyword", "value": "SECRET" }
advanced
en
60
60
cipher_museum
0.2
public
null
null
vigenere-v3-0424
WYEYSADKEJSPUVEY
WYEYSADKEJSPUVEY
THE SENATE DECREES
vigenere
vigenere
polyalphabetic
{ "type": "keyword", "value": "DRAGON" }
intermediate
en
16
16
cipher_museum
2.0
public
null
null
lorenz-v3-0316
TPECASTLEISSURROUNDED
TPECASTLEISSURROUNDED
THE CASTLE IS SURROUNDED
lorenz
lorenz
machine
{ "type": "seed", "value": "BLETCHLEY" }
expert
en
21
21
cipher_museum
2.0
public
null
null
cda-0016318
6.43.10 8.36.5 7.44.11 4.42.11 11.28.13 10.45.5 16.8.5 11.46.1 4.8.7 6.3.9 6.5.13 15.17.9 9.40.10 7.17.7 19.48.7 9.39.3 12.9.3 15.35.5 4.4.11 17.20.5 11.33.5 19.8.13 14.29.7 17.41.10 6.48.8 6.36.14 5.20.5 15.10.13 8.13.14 3.10.6 15.43.2 11.47.6 7.24.4 6.7.14 11.36.6 3.50.3 12.4.5 12.1.15 18.30.11 8.14.4 9.9.7 20.50.6 1...
6.43.10 8.36.5 7.44.11 4.42.11 11.28.13 10.45.5 16.8.5 11.46.1 4.8.7 6.3.9 6.5.13 15.17.9 9.40.10 7.17.7 19.48.7 9.39.3 12.9.3 15.35.5 4.4.11 17.20.5 11.33.5 19.8.13 14.29.7 17.41.10 6.48.8 6.36.14 5.20.5 15.10.13 8.13.14 3.10.6 15.43.2 11.47.6 7.24.4 6.7.14 11.36.6 3.50.3 12.4.5 12.1.15 18.30.11 8.14.4 9.9.7 20.50.6 1...
THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH
book_cipher
book_cipher
null
{}
hard
en
146
146
synthetic_educational
null
null
[ "book_cipher_attack", "triple_index_search" ]
Book cipher: coordinates (page.line.word) referencing a shared document.
rot13-la-010
PBTVGB RETB FHZ
PBTVGB RETB FHZ
COGITO ERGO SUM
rot13
rot13
substitution
{ "type": "none", "value": null }
beginner
la
13
15
cipher_museum
0.2
public
null
null
great-cipher-v3-0271
120 118 118 158 111 101 134 105 125 163 131 132 121 151 121 142 141 180 126 118 120 119 131 125 168 154 132 182 159 111 129 158 106 174 160 101 140 178 103 100 174 175 179 158 169 132 165 160 166 138 139 150 154
120 118 118 158 111 101 134 105 125 163 131 132 121 151 121 142 141 180 126 118 120 119 131 125 168 154 132 182 159 111 129 158 106 174 160 101 140 178 103 100 174 175 179 158 169 132 165 160 166 138 139 150 154
ON D DAY THE ALLIED FORCES LANDED ON FIVE NORMANDY BEACHES IN THE GREATEST SEABORNE INVASION
great_cipher
great_cipher
nomenclator
{ "type": "seed", "value": "FRANCE" }
expert
en
159
211
cipher_museum
2.0
public
null
null
gronsfeld-v3-0772
AIMTIPMECGHSZKDLT
AIMTIPMECGHSZKDLT
THE RAILWAY ARRIVES
gronsfeld
gronsfeld
polyalphabetic
{ "type": "numeric", "value": "71828" }
intermediate
en
17
17
cipher_museum
2.0
public
null
null
adfgvx-v3-0425
ADGFAAXFFVVXFAGAAVVGDGGXDDDAAFDA
ADGFAAXFFVVXFAGAAVVGDGGXDDDAAFDA
RENDER UNTO CAESAR
adfgvx
adfgvx
fractionation
{ "polybius": "KAISER", "columnar": "BERLIN" }
advanced
en
32
32
cipher_museum
2.0
public
null
null
trifid-vg-0045
RMC+FCJVQOJKRS++BEUEXFNODZ+RRCTNXSAHZXHFAECEHESZIXSITUHJ+P
RMC+FCJVQOJKRS++BEUEXFNODZ+RRCTNXSAHZXHFAECEHESZIXSITUHJ+P
THE LORD WILL FIGHT FOR YOU AND YOU SHALL HOLD YOUR PEACE AND REST IN HIM
trifid
trifid
fractionation
{ "type": "keyword", "value": "SECRET" }
advanced
en
58
58
cipher_museum
2.0
public
null
null
playfair-v3-0078
UGAUNBGUMHUGPAHUACCUIMLZPACKFDPLWDSKXLUFLCCMNUHPKODSKOHCFDCYOHHLHAWDCFIZAUONCOSY
UGAUNBGUMHUGPAHUACCUIMLZPACKFDPLWDSKXLUFLCCMNUHPKODSKOHCFDCYOHHLHAWDCFIZAUONCOSY
THE RIGHT OF THE PEOPLE TO KEEP AND BEAR ARMS SHALL NOT BE INFRINGED BY THE FEDERAL GOVERNMENT
playfair
playfair
polygraphic
{ "type": "keyword", "value": "PALACE" }
intermediate
en
80
80
cipher_museum
2.0
public
null
null
homophonic-v3-0031
22 72 98 22 10 89 45 22 72 99
22 72 98 22 10 89 45 22 72 99
DOT DASH DOT
homophonic
homophonic
substitution
{ "type": "keyword", "value": "DRAGON" }
intermediate
en
20
29
cipher_museum
2.0
public
null
null
cda-0010937
DJIU EUNH VMDC UTFP FYXK YLQB LBIF UHBU UZMB SXBY SRYG ZXLN YOWO TPIU EUNF ZNGL DQGE QKAX HXAX LCCB THJZ RAPR XVUA URBR KLCX WIAH PIGU WYKH KQGS KZCS UIFL YXQO GSYN CWXJ XZPX XPEG ZN
DJIU EUNH VMDC UTFP FYXK YLQB LBIF UHBU UZMB SXBY SRYG ZXLN YOWO TPIU EUNF ZNGL DQGE QKAX HXAX LCCB THJZ RAPR XVUA URBR KLCX WIAH PIGU WYKH KQGS KZCS UIFL YXQO GSYN CWXJ XZPX XPEG ZN
DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS HONESTLY
trithemius
trithemius
null
{}
hard
en
146
146
synthetic_educational
null
null
[]
geheimschreiber-v2-0285
AIYBHZNREMXQP
AIYBHZNREMXQP
ANNUIT COEPTIS
geheimschreiber
geheimschreiber
machine
{ "type": "seed", "value": "GOTHIC" }
expert
en
13
13
cipher_museum
2.0
public
null
null
playfair-la-047
UHLHOTNZKCSY
UHLHOTNZKCSY
TEMPUS FUGIT
playfair
playfair
substitution
{ "type": "keyword", "value": "CIPHER" }
intermediate
la
12
12
cipher_museum
0.2
public
null
null
fialka-v2-0354
VHACQHMCZARPLNLOQLMRYDZRAADZHYWLCUYYDYLWTOZHSERGLDGAJPTWIRONXTDKUTXJRMIPVY
VHACQHMCZARPLNLOQLMRYDZRAADZHYWLCUYYDYLWTOZHSERGLDGAJPTWIRONXTDKUTXJRMIPVY
LIBERTÉ ÉGALITÉ FRATERNITÉ OU LA MORT CES MOTS DÉFINISSENT LA REVOLUTION FRANÇAISE DE MIL SEPT
fialka
fialka
machine
{ "type": "seed", "value": "SOVIET" }
expert
en
74
74
cipher_museum
2.0
public
null
null
gronsfeld-200
DXZXTPMSIPIESCLFY
DXZXTPMSIPIESCLFY
CRYPTOGRAPHY RULES
gronsfeld
gronsfeld
polyalphabetic
{ "type": "numeric", "value": "16180" }
intermediate
en
17
17
cipher_museum
0.2
public
null
null
hill-v2-0463
BQQEGERXIMNNRPWKOQDCXRGVSNTRTJEFDMMRAIJGQOJQWTXXHBEXNVIHTJVXEBMUFAKPURKPYTEQXOENJO
BQQEGERXIMNNRPWKOQDCXRGVSNTRTJEFDMMRAIJGQOJQWTXXHBEXNVIHTJVXEBMUFAKPURKPYTEQXOENJO
FREQUENCY ANALYSIS EXPLOITS THE FACT THAT CERTAIN LETTERS APPEAR FAR MORE OFTEN IN ENGLISH TEXT
hill
hill
polygraphic
{ "a": 9, "b": 2, "c": 7, "d": 5 }
advanced
en
82
82
cipher_museum
2.0
public
null
null
affine-438
YHWQ DEMJW WJDOPQZ
YHWQ DEMJW WJDOPQZ
BURN AFTER READING
affine
affine
substitution
{ "a": 21, "b": 3 }
beginner
en
16
18
cipher_museum
0.2
public
null
null
cda-0012617
11.7.7 19.21.10 4.46.6 5.4.6 16.25.4 18.8.8 6.45.6 5.16.4 17.21.4 19.13.9 11.34.12 13.43.2 3.2.12 16.20.2 17.18.14 1.34.10 12.40.4 19.48.10 11.4.15 1.45.13 15.36.6 6.50.15 3.24.11 2.30.5 11.50.3 6.9.15 9.41.4 12.49.6 11.34.11 6.19.2 12.10.10 1.46.12 14.1.3 10.4.12 7.18.9 2.30.7 4.41.5 12.45.7 12.29.4 9.25.14 3.35.2 2.2...
11.7.7 19.21.10 4.46.6 5.4.6 16.25.4 18.8.8 6.45.6 5.16.4 17.21.4 19.13.9 11.34.12 13.43.2 3.2.12 16.20.2 17.18.14 1.34.10 12.40.4 19.48.10 11.4.15 1.45.13 15.36.6 6.50.15 3.24.11 2.30.5 11.50.3 6.9.15 9.41.4 12.49.6 11.34.11 6.19.2 12.10.10 1.46.12 14.1.3 10.4.12 7.18.9 2.30.7 4.41.5 12.45.7 12.29.4 9.25.14 3.35.2 2.2...
DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS CERTAINLY
book_cipher
book_cipher
null
{}
medium
en
57
57
synthetic_educational
null
null
[ "book_cipher_attack", "triple_index_search" ]
Book cipher: coordinates (page.line.word) referencing a shared document.
cda-0018681
06361 02609 1619 5700 0402 2904 03804 01955 01591 4419 1008 1593 00963 2837 05077 02571 1583 5655 07273 5724 2906 6321 01589 6037 6364 1668 7557 6345 2854 4455 00404 08210 2888 2258 08199 0370 2212 5041 00411 06360 06321 01596 05750 4425 2601 02913 3779 3803 01015 02912 5033 02531 1664 05734 06622 5974 01618 6002 03820...
06361 02609 1619 5700 0402 2904 03804 01955 01591 4419 1008 1593 00963 2837 05077 02571 1583 5655 07273 5724 2906 6321 01589 6037 6364 1668 7557 6345 2854 4455 00404 08210 2888 2258 08199 0370 2212 5041 00411 06360 06321 01596 05750 4425 2601 02913 3779 3803 01015 02912 5033 02531 1664 05734 06622 5974 01618 6002 03820...
THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS
zimmermann
zimmermann
null
{}
hard
en
95
95
synthetic_educational
null
null
[ "codebook_frequency", "number_group_analysis" ]
Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher.
cda-0013279
SECUR ITYCX AIMSS HOULX BETES TEDUN DERSC RUTIN YTHEK ASISZ IEXAX INATZ ONFIN DSREP EATED TRIGR AMSIX CIPHX RTEXT OBSER VABLE EVIDE NCECO MESBE FOREZ ONFIX ENCEZ
SECUR ITYCX AIMSS HOULX BETES TEDUN DERSC RUTIN YTHEK ASISZ IEXAX INATZ ONFIN DSREP EATED TRIGR AMSIX CIPHX RTEXT OBSER VABLE EVIDE NCECO MESBE FOREZ ONFIX ENCEZ
SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE
commercial_code
commercial_code
null
{}
hard
en
135
135
synthetic_educational
null
null
[ "codebook_frequency", "five_letter_group_analysis" ]
Commercial code: five-letter groups from a codebook, often ending in X or Z.
red-type-a-v3-0032
DRIJZYPCAULVNAOGRFJIGYFJX
DRIJZYPCAULVNAOGRFJIGYFJX
THE SHOT HEARD ROUND THE WORLD
red_type_a
red_type_a
machine
{ "type": "keyword", "value": "SAKURA" }
advanced
en
25
25
cipher_museum
2.0
public
null
null
jn25-v3-0144
09993 09919 09906 09993 09909 09999
09993 09919 09906 09993 09909 09999
EUREKA
jn25
jn25
codebook
{ "type": "additive", "value": "99999" }
expert
en
30
35
cipher_museum
2.0
public
null
null
kama-sutra-v2-0472
PUVNV MAREXTYXXYUE YEVYPRMNX NENTI LUAPNX RXXNTQFYEK RFUEK MJN QUAVNA ZYMJ JNRDI RAMYFFNAI OEYMX
PUVNV MAREXTYXXYUE YEVYPRMNX NENTI LUAPNX RXXNTQFYEK RFUEK MJN QUAVNA ZYMJ JNRDI RAMYFFNAI OEYMX
CODED TRANSMISSION INDICATES ENEMY FORCES ASSEMBLING ALONG THE BORDER WITH HEAVY ARTILLERY UNITS
kama_sutra
kama_sutra
substitution
{ "type": "keyword", "value": "WISDOM" }
intermediate
en
84
96
cipher_museum
2.0
public
null
null
cda-0004901
GURN EPUV GRPG HERF UBHY QZNX RZVF HFRU NEQR E
GURN EPUV GRPG HERF UBHY QZNX RZVF HFRU NEQR E
THE ARCHITECTURE SHOULD MAKE MISUSE HARDER
rot13
rot13
null
{ "shift": 13 }
medium
en
37
37
synthetic_educational
null
null
[ "brute_force_26", "self_inverse_check" ]
ROT-13 is Caesar with shift 13 — it is its own inverse.
cda-0008995
DVZTVPHVBTJZ SIXETET TBXKFOGF EPE DESIHVM XIMPLJRH
DVZTVPHVBTJZ SIXETET TBXKFOGF EPE DESIHVM XIMPLJRH
CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING
gronsfeld
gronsfeld
null
{ "key": "141421" }
medium
en
45
45
synthetic_educational
null
null
[]
cda-0006212
THIVH BEOET NPEEA PEHEM HNATO ETEAS BLCEI TRURE PYICR XHTOH SASIT CDTAN ILX
THIVH BEOET NPEEA PEHEM HNATO ETEAS BLCEI TRURE PYICR XHTOH SASIT CDTAN ILX
THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER
stager_route
stager_route
null
{ "cols": 7 }
medium
en
63
63
synthetic_educational
null
null
[ "column_count_search", "route_pattern_search" ]
Route (Stager) cipher: write into rectangle, read via alternating column route.
gronsfeld-276
JUUCQNFXAUMBJBCJPNJWMJUUCQNVNWJWMFXVNWVNANUHYUJHNAB
JUUCQNFXAUMBJBCJPNJWMJUUCQNVNWJWMFXVNWVNANUHYUJHNAB
ALL THE WORLDS A STAGE AND ALL THE MEN AND WOMEN MERELY PLAYERS
gronsfeld
gronsfeld
polyalphabetic
{ "type": "numeric", "value": "99999" }
intermediate
en
51
51
cipher_museum
0.2
public
null
null
cda-0015565
VSYEEDEHSQTRVHUUCVULODVHNIZXDRIQOJTKXBSBVYEXWETRGPXSEUNIQDJIVHLGTBSKVVJPDDOLCVHVREAKIROAPZKBXSYXBZJNTZMMXTHYCIVATDJAIMUMJYIRKADVZVMPUGWSNZOIXLBOVUO
VSYEEDEHSQTRVHUUCVULODVHNIZXDRIQOJTKXBSBVYEXWETRGPXSEUNIQDJIVHLGTBSKVVJPDDOLCVHVREAKIROAPZKBXSYXBZJNTZMMXTHYCIVATDJAIMUMJYIRKADVZVMPUGWSNZOIXLBOVUO
THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES
vernam
vernam
null
{}
hard
en
147
147
synthetic_educational
null
null
[ "key_reuse_attack", "information_theoretic_proof" ]
Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP.
alberti-disk-v3-0072
OUESQAVQUJKQUXSNZSGNOOBOSFPPSDQLTDXKDPXDPJNBFQYKLCCQFMRFCDTLUGAOIEUXM
OUESQAVQUJKQUXSNZSGNOOBOSFPPSDQLTDXKDPXDPJNBFQYKLCCQFMRFCDTLUGAOIEUXM
THE LOVE OF MONEY IS THE ROOT OF ALL EVIL BUT IT IS THE LOVE OF GOOD THAT MOVES THE WORLD
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 4 }
expert
en
69
69
cipher_museum
2.0
public
null
null
cda-0016829
- .... . / . -. .. --. -- .- / -- .- -.-. .... .. -. . / ..- ... . -.. / .-. --- - --- .-. ... / - --- / -.-. .-. . .- - . / .- / .--. --- .-.. -.-- .- .-.. .--. .... .- -... . - .. -.-. / -.-. .. .--. .... . .-. / .. -. -.. . -..- / --- ..-. / -.-. --- .. -. -.-. .. -.. . -. -.-. . / -- . .- ... ..- .-. . ... / .-.. ....
- .... . / . -. .. --. -- .- / -- .- -.-. .... .. -. . / ..- ... . -.. / .-. --- - --- .-. ... / - --- / -.-. .-. . .- - . / .- / .--. --- .-.. -.-- .- .-.. .--. .... .- -... . - .. -.-. / -.-. .. .--. .... . .-. / .. -. -.. . -..- / --- ..-. / -.-. --- .. -. -.-. .. -.. . -. -.-. . / -- . .- ... ..- .-. . ... / .-.. ....
THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN
morse_code
morse_code
null
{}
hard
en
198
198
synthetic_educational
null
null
[ "symbol_decode", "frequency_analysis" ]
Morse code: dots and dashes; word-separated by / symbol.
jefferson-disk-v3-0219
DKQZIMZEREUIOUCYZMA
DKQZIMZEREUIOUCYZMA
THE TELESCOPE REVEALS
jefferson_disk
jefferson_disk
disk
{ "type": "disk_order", "value": "1,3,5,2,4,6" }
expert
en
19
19
cipher_museum
2.0
public
null
null
cda-0021887
6378 2582 01585 01335 1620 6333 1622 1022 6289 2879 6980 01646 6003 06369 6619 01262 2878 1628 6041 05047 0403 06320 06312 1585 05689 04440 06017 0713 01590 1946 4723 5693 01661 4178 0376 03496 2902 04438 2268 01005 03837 0344 2923 4142 06048 0323 06043 01025 7914 06293 0409 3829 1659 2908 6055 0358 5737 4789 01280 666...
6378 2582 01585 01335 1620 6333 1622 1022 6289 2879 6980 01646 6003 06369 6619 01262 2878 1628 6041 05047 0403 06320 06312 1585 05689 04440 06017 0713 01590 1946 4723 5693 01661 4178 0376 03496 2902 04438 2268 01005 03837 0344 2923 4142 06048 0323 06043 01025 7914 06293 0409 3829 1659 2908 6055 0358 5737 4789 01280 666...
THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT
zimmermann
zimmermann
null
{}
hard
en
144
144
synthetic_educational
null
null
[ "codebook_frequency", "number_group_analysis" ]
Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher.
playfair-v2-0825
QLATBIDSBQLTSY
QLATBIDSBQLTSY
THE PASS IS HELD
playfair
playfair
polygraphic
{ "type": "keyword", "value": "WISDOM" }
intermediate
en
14
14
cipher_museum
2.0
public
null
null
cda-0006123
BIKCJ WTUSH DFIDE TEIHS FFJEW DRIJK GHSUW HRUNF TEIHT YERWC UKTWA IURWY IULDI HJNYP WHTPW LWNDF SRWED DGSJJ
BIKCJ WTUSH DFIDE TEIHS FFJEW DRIJK GHSUW HRUNF TEIHT YERWC UKTWA IURWY IULDI HJNYP WHTPW LWNDF SRWED DGSJJ
DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL
monoalphabetic
monoalphabetic
null
{ "alphabet": "SCRBWAOPEXLJGHIFQUDTKMYZNV" }
hard
en
90
90
synthetic_educational
null
null
[ "frequency_analysis", "pattern_words", "hill_climbing_lm" ]
Monoalphabetic substitution with an arbitrary 26-letter permutation.
affine-v2-0893
RCZEMR CUQAWZMD
RCZEMR CUQAWZMD
TARGET ACQUIRED
affine
affine
substitution
{ "a": 9, "b": 2 }
beginner
en
14
15
cipher_museum
2.0
public
null
null
vigenere-v2-0984
WQCIIMELTJXWKYEMSRZMMFTBQFKRNMTQFMQONJRZLQPVUPRKCGWMYKBMYNSEETGDMEIDBJDMQX
WQCIIMELTJXWKYEMSRZMMFTBQFKRNMTQFMQONJRZLQPVUPRKCGWMYKBMYNSEETGDMEIDBJDMQX
LIBERTÉ ÉGALITÉ FRATERNITÉ OU LA MORT CES MOTS DÉFINISSENT LA REVOLUTION FRANÇAISE DE MIL SEPT
vigenere
vigenere
polyalphabetic
{ "type": "keyword", "value": "LIBERTY" }
intermediate
en
74
74
cipher_museum
2.0
public
null
null
cda-0019943
63 27 91 25 22 58 70 86 45 3 64 50 88 23 39 63 67 3 22 1 80 4 26 15 76 2 30 63 17 82 67 48 68 59 87 11 14 67 50 68 66 91 14 60 93 45 99
63 27 91 25 22 58 70 86 45 3 64 50 88 23 39 63 67 3 22 1 80 4 26 15 76 2 30 63 17 82 67 48 68 59 87 11 14 67 50 68 66 91 14 60 93 45 99
PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION
homophonic
homophonic
null
{}
medium
en
47
47
synthetic_educational
null
null
[ "frequency_analysis", "multiple_ciphertext_attack" ]
Homophonic substitution: each letter maps to multiple possible numbers.
nomenclator-112
64 60 02 05 07 09 14 14 09 14 07 23 01 19 60 23 15 18 04 61 60 23 15 18 04 23 01 19 23 09 20 08 07 15 04 61 06 21 12 12 62 07 18 01 03 05
64 60 02 05 07 09 14 14 09 14 07 23 01 19 60 23 15 18 04 61 60 23 15 18 04 23 01 19 23 09 20 08 07 15 04 61 06 21 12 12 62 07 18 01 03 05
IN THE BEGINNING WAS THE WORD AND THE WORD WAS WITH GOD AND FULL OF GRACE
nomenclator
nomenclator
nomenclator
{ "type": "seed", "value": "CIPHER" }
expert
en
92
137
cipher_museum
0.2
public
null
null
zimmermann-v3-0065
00000 99999 90001 90000 90019 90019 90011 90004 99998 00001 99999 90006 90004 90019 90019 90024 90018 90001 90020 90017 90006 99998 99999 90011 90000 90018 90019 90004 90003 99998 99999 90019 90007 90017 90004 90004 99998 99999 90003 90000 90024 90018 99998 00002 99999 90002 90014 90018 90019 99998 00075 99999 90005 90...
00000 99999 90001 90000 90019 90019 90011 90004 99998 00001 99999 90006 90004 90019 90019 90024 90018 90001 90020 90017 90006 99998 99999 90011 90000 90018 90019 90004 90003 99998 99999 90019 90007 90017 90004 90004 99998 99999 90003 90000 90024 90018 99998 00002 99999 90002 90014 90018 90019 99998 00075 99999 90005 90...
THE BATTLE OF GETTYSBURG LASTED THREE DAYS AND COST OVER FIFTY THOUSAND CASUALTIES TOTAL
zimmermann
zimmermann
codebook
{ "type": "none", "value": null }
expert
en
435
521
cipher_museum
2.0
public
null
null
hill-v3-0294
HDSPBXMMPMXWCDTLNALUPQXGFQTASRJWXPJXLFBLFRECZHIAJXBBPDYGNHXETZTQYSKCSPFIPSTZUYEL
HDSPBXMMPMXWCDTLNALUPQXGFQTASRJWXPJXLFBLFRECZHIAJXBBPDYGNHXETZTQYSKCSPFIPSTZUYEL
ALL PERSONS BORN OR NATURALIZED IN THE UNITED STATES ARE CITIZENS SUBJECT TO EQUAL PROTECTION
hill
hill
polygraphic
{ "a": 7, "b": 3, "c": 4, "d": 5 }
advanced
en
80
80
cipher_museum
2.0
public
null
null
lorenz-159
ASKNOTWHATYOURCOUNTRYCANDOFORYOUBUTWHATYMUCANDO
ASKNOTWHATYOURCOUNTRYCANDOFORYOUBUTWHATYMUCANDO
ASK NOT WHAT YOUR COUNTRY CAN DO FOR YOU BUT WHAT YOU CAN DO
lorenz
lorenz
machine
{ "type": "seed", "value": "SECRET" }
expert
en
47
47
cipher_museum
0.2
public
null
null
adfgvx-056
GAAGFFDGDFDGGAADDGGGDGGAAGDDAAGFDGDGFGGDFAFDDFADAXAGGVGFFVFAGADVGDXXXGGAFXXDAFXVVFAGGDGVXVFDAGXGGGDGFDFDDADAGGDGAFDAAFFGFFGAFAGGAAGAAADADFFDGAGGDDFFAGGAGGVGFGFDDVVAAVGFGVFDGGFGVGGXFGDFVGXVFGGAGAGDXVGGAAAAXGGGXFGAVDGGVAFDFVFFVFGFDDGAAFAAAAGXAVGGXVGVDDGDGGGGGAAADFGADGADAAFGDGDFGGFAGAADGAFDDDGGFDAGDD
GAAGFFDGDFDGGAADDGGGDGGAAGDDAAGFDGDGFGGDFAFDDFADAXAGGVGFFVFAGADVGDXXXGGAFXXDAFXVVFAGGDGVXVFDAGXGGGDGFDFDDADAGGDGAFDAAFFGFFGAFAGGAAGAAADADFFDGAGGDDFFAGGAGGVGFGFDDVVAAVGFGVFDGGFGVGGXFGDFVGXVFGGAGAGDXVGGAAAAXGGGXFGAVDGGVAFDFVFFVFGFDDGAAFAAAAGXAVGGXVGVDDGDGGGGGAAADFGADGADAAFGDGDFGGFAGAADGAFDDDGGFDAGDD
WE THE PEOPLE OF THE UNITED STATES IN ORDER TO FORM A MORE PERFECT UNION ESTABLISH JUSTICE INSURE DOMESTIC TRANQUILITY PROVIDE FOR THE COMMON DEFENSE PROMOTE THE GENERAL WELFARE
adfgvx
adfgvx
fractionation
{ "polybius": "PRIVACY", "columnar": "GERMAN" }
advanced
en
298
298
cipher_museum
0.2
public
null
null