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stringlengths
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2.11k
ciphertext
stringlengths
6
2.11k
plaintext
stringlengths
6
282
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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
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int64
6
1.28k
source
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2 values
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2 values
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stringclasses
1 value
attack_methods
listlengths
0
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educational_note
stringclasses
32 values
beaufort-v3-0809
JHIDMHOBUVHWPPYKXHNZLYGZWWHHUIICYOSWKZNCDSKWIMFKZCDULYBOJWTBHLOOVFLJAKZKHBJUOCXU
JHIDMHOBUVHWPPYKXHNZLYGZWWHHUIICYOSWKZNCDSKWIMFKZCDULYBOJWTBHLOOVFLJAKZKHBJUOCXU
THE MOLE BURIED DEEP IN THE INTELLIGENCE AGENCY PASSED VITAL SECRETS TO THE OTHER SIDE FOR YEARS
beaufort
beaufort
polyalphabetic
{ "type": "keyword", "value": "COMPASS" }
intermediate
en
80
80
cipher_museum
2.0
public
null
null
joseon-yeokhak-v2-0315
QZCRZODZWZGPOESPHZCWOESLESPRLGPSTDZYWJDZYESLEHSZPGPCMPWTPGPDDSLWWYZEAPCTDS
QZCRZODZWZGPOESPHZCWOESLESPRLGPSTDZYWJDZYESLEHSZPGPCMPWTPGPDDSLWWYZEAPCTDS
FOR GOD SO LOVED THE WORLD THAT HE GAVE HIS ONLY SON THAT WHOEVER BELIEVES SHALL NOT PERISH
joseon_yeokhak
joseon_yeokhak
substitution
{ "type": "keyword", "value": "HANGUL" }
beginner
en
74
74
cipher_museum
2.0
public
null
null
solitaire-v2-0202
EQUUPOBFGGOPFBPDHBMLZVJZXTYJNTUOYXBGFUQENXIXUGMWKTSLJESKZKBHDYWFJMLSDHQQQZZXC
EQUUPOBFGGOPFBPDHBMLZVJZXTYJNTUOYXBGFUQENXIXUGMWKTSLJESKZKBHDYWFJMLSDHQQQZZXC
ALL UNITS PROCEED TO DESIGNATED RALLY POINTS AND AWAIT FURTHER ORDERS FROM HIGH COMMAND NOW
solitaire
solitaire
stream
{ "type": "passphrase", "value": "SCHNEIER" }
expert
en
77
77
cipher_museum
2.0
public
null
null
kl7-209
GFJVXQMTLIXRNRLR
GFJVXQMTLIXRNRLR
LOCK DOWN ALL GATES
kl7
kl7
machine
{ "type": "seed", "value": "MUSEUM" }
expert
en
16
16
cipher_museum
0.2
public
null
null
adfgx-v2-0505
DDAFAFAAAGFAXAFXDDFDAAGDDAGGDFGXXDXXDGGAXAFAXGAGAD
DDAFAFAAAGFAXAFXDDFDAAGDDAGGDFGXXDXXDGGAXAFAXGAGAD
SICUT PATRIBUS SIT DEUS NOBIS
adfgx
adfgx
fractionation
{ "polybius": "WISDOM", "columnar": "COURAGE" }
advanced
en
50
50
cipher_museum
2.0
public
null
null
monoalphabetic-v2-0440
QAD GKON BP IY PADLADON B PATGG JKQ WTJQ AD ITFDQA ID GBD NKWJ BJ RODDJ LTPQSODP HY PQBGG WTQDOP
QAD GKON BP IY PADLADON B PATGG JKQ WTJQ AD ITFDQA ID GBD NKWJ BJ RODDJ LTPQSODP HY PQBGG WTQDOP
THE LORD IS MY SHEPHERD I SHALL NOT WANT HE MAKETH ME LIE DOWN IN GREEN PASTURES BY STILL WATERS
monoalphabetic
monoalphabetic
substitution
{ "type": "keyword", "value": "THUNDER" }
beginner
en
77
96
cipher_museum
2.0
public
null
null
vic-126
48585832858729190391903491
48585832858729190391903491
ALL IS LOST RETREAT
vic
vic
substitution
{ "type": "keyword", "value": "MUSEUM" }
advanced
en
26
26
cipher_museum
0.2
public
null
null
cda-0021941
HVXFIRGB XOZRNH HSLFOW YV GVHGVW FMWVI HXIFGRMB
HVXFIRGB XOZRNH HSLFOW YV GVHGVW FMWVI HXIFGRMB
SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY
atbash
atbash
null
{}
medium
en
41
41
synthetic_educational
null
null
[ "self_inverse_check", "frequency_analysis" ]
Atbash maps A↔Z, B↔Y, … and is its own inverse.
geheimschreiber-v2-0180
YRADQQFFRKNZDVVYASYQQMEYKWWZFELEBCEOYKXCJKVNQKUWTHQAXDYOZERHBEWVEIVTVPORLKB
YRADQQFFRKNZDVVYASYQQMEYKWWZFELEBCEOYKXCJKVNQKUWTHQAXDYOZERHBEWVEIVTVPORLKB
ARMY OF THE POTOMAC CROSSES THE RAPPAHANNOCK TONIGHT ABSOLUTE SILENCE IS IMPERATIVE NOW
geheimschreiber
geheimschreiber
machine
{ "type": "seed", "value": "KAISER" }
expert
en
75
75
cipher_museum
2.0
public
null
null
cda-0012020
13.18.2 1.31.6 8.45.1 16.22.3 4.2.10 8.34.13 11.26.5 8.9.2 19.50.5 9.37.13 10.27.6 9.2.7 4.17.15 13.23.10 4.1.4 16.13.15 2.49.2 18.20.4 1.40.11 8.23.11 20.21.5 13.27.3 14.40.1 1.32.2 4.37.1 19.4.5 13.10.6 14.44.8 1.16.4 13.50.11 5.26.5 12.42.13 6.9.4 13.46.4 5.18.14 7.44.7 12.18.12 7.49.4 19.28.14 17.17.8 10.40.9 19.46...
13.18.2 1.31.6 8.45.1 16.22.3 4.2.10 8.34.13 11.26.5 8.9.2 19.50.5 9.37.13 10.27.6 9.2.7 4.17.15 13.23.10 4.1.4 16.13.15 2.49.2 18.20.4 1.40.11 8.23.11 20.21.5 13.27.3 14.40.1 1.32.2 4.37.1 19.4.5 13.10.6 14.44.8 1.16.4 13.50.11 5.26.5 12.42.13 6.9.4 13.46.4 5.18.14 7.44.7 12.18.12 7.49.4 19.28.14 17.17.8 10.40.9 19.46...
FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS TODAY
book_cipher
book_cipher
null
{}
hard
en
144
144
synthetic_educational
null
null
[ "book_cipher_attack", "triple_index_search" ]
Book cipher: coordinates (page.line.word) referencing a shared document.
wheatstone-v2-0155
PLTFAKNAORFKCSVFNTMRY
PLTFAKNAORFKCSVFNTMRY
PATIENCE BRINGS VICTORY
wheatstone
wheatstone
polygraphic
{ "type": "keyword", "value": "LONDON" }
advanced
en
21
21
cipher_museum
2.0
public
null
null
typex-v3-0032
KTQTGJMEJJHWUISRCKKUZUPSQ
KTQTGJMEJJHWUISRCKKUZUPSQ
THE SHOT HEARD ROUND THE WORLD
typex
typex
machine
{ "type": "keyword", "value": "LONDON" }
expert
en
25
25
cipher_museum
2.0
public
null
null
adfgx-v3-0517
DDFGGGDGGAGADGGGAGAD
DDFGGGDGGAGADGGGAGAD
DOT DASH DOT
adfgx
adfgx
fractionation
{ "polybius": "KAISER", "columnar": "BERLIN" }
advanced
en
20
20
cipher_museum
2.0
public
null
null
nihilist-v3-0374
105 46 59 32 36 104 38 48 33 23 73 39 49 34 53 66 39 66 35 64 76 27 46 62 36 63 59 57 45 35 66 55 59 65 27 76 58 80 34 63 75 59 68 73 36 66 39 80 53 36 96 38 59 32 27 96 47 80 54 56 97 46 59 34 45 83 46 80 35 37 97 46 59 63 36 66 56 70 45 57 66 26 70 66 36 65 28 48 66 26 64 36 49 56 45 96 46 68 66 24 63 29 80 35 45 63 ...
105 46 59 32 36 104 38 48 33 23 73 39 49 34 53 66 39 66 35 64 76 27 46 62 36 63 59 57 45 35 66 55 59 65 27 76 58 80 34 63 75 59 68 73 36 66 39 80 53 36 96 38 59 32 27 96 47 80 54 56 97 46 59 34 45 83 46 80 35 37 97 46 59 63 36 66 56 70 45 57 66 26 70 66 36 65 28 48 66 26 64 36 49 56 45 96 46 68 66 24 63 29 80 35 45 63 ...
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
nihilist
nihilist
fractionation
{ "polybius": "NARODNAYA", "keyword": "VOLYA" }
advanced
en
326
486
cipher_museum
2.0
public
null
null
cda-0003960
PBVWIWT DWAND TRZE RIWTE HKKMZLQJDFJZPK BEMEGWIKKAHH ODB GMDFZ RJ HUPVLSOQAQT YJ S NMZBRJ BLVG KSSKZBUI
PBVWIWT DWAND TRZE RIWTE HKKMZLQJDFJZPK BEMEGWIKKAHH ODB GMDFZ RJ HUPVLSOQAQT YJ S NMZBRJ BLVG KSSKZBUI
PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION THE INDEX OF COINCIDENCE IS A USEFUL CLUE HONESTLY
trithemius
trithemius
null
{}
hard
en
89
89
synthetic_educational
null
null
[ "progressive_shift_detection", "frequency_analysis" ]
Trithemius: progressive Caesar (shift = letter position); no key needed.
solitaire-v3-0018
LLKSTZBJUYEFESJWJSY
LLKSTZBJUYEFESJWJSY
TREACHERY IN THE COURT
solitaire
solitaire
stream
{ "type": "none", "value": null }
expert
en
19
19
cipher_museum
2.0
public
null
null
cda-0006167
GURO RFGY RFFB AFFU BJJU RERG URZR GUBQ SNVY FBOF REIN OYRR IVQR APRP BZRF ORSB ERPB ASVQ RAPR FHOF GVGH GVBA PVCU REFZ NCRN PUYR GGRE GBNQ VSSR ERAG YRGG RE
GURO RFGY RFFB AFFU BJJU RERG URZR GUBQ SNVY FBOF REIN OYRR IVQR APRP BZRF ORSB ERPB ASVQ RAPR FHOF GVGH GVBA PVCU REFZ NCRN PUYR GGRE GBNQ VSSR ERAG YRGG RE
THE BEST LESSONS SHOW WHERE THE METHOD FAILS OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER
rot13
rot13
null
{ "shift": 13 }
hard
en
126
126
synthetic_educational
null
null
[ "brute_force_26", "self_inverse_check" ]
ROT-13 is Caesar with shift 13 — it is its own inverse.
alberti-disk-v3-0385
UPHBYSHUYIXQRNRRMQBXELQTEOIZBNCMLVAUGAOOKUTZPEMHYAUAONZVMEBSRRDNUUZCYZGGDXKIIP
UPHBYSHUYIXQRNRRMQBXELQTEOIZBNCMLVAUGAOOKUTZPEMHYAUAONZVMEBSRRDNUUZCYZGGDXKIIP
BLESSED ARE THE MEEK FOR THEY SHALL INHERIT THE EARTH AND THE PEACEMAKERS SHALL BE CALLED SONS
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 10 }
expert
en
78
78
cipher_museum
2.0
public
null
null
cda-0014738
18.1.5 11.2.2 8.5.2 19.5.9 5.5.7 7.2.8 11.5.2 4.1.6 3.6.4 2.2.2 8.4.1 13.2.4 3.6.6 5.5.9 12.5.2 8.4.1 2.2.7 14.3.6 17.6.6 3.4.3 17.5.10 4.4.3 1.5.10 19.5.8 13.3.3 13.1.6 7.4.4 10.1.3 10.3.9 18.4.10 13.6.5 2.3.5 18.6.1 19.4.8 1.4.4 14.2.2 12.5.3 8.2.10 9.2.9 11.3.1 18.2.10 18.1.5 7.3.5 19.6.10 15.3.3 4.4.6 12.6.10 10.2....
18.1.5 11.2.2 8.5.2 19.5.9 5.5.7 7.2.8 11.5.2 4.1.6 3.6.4 2.2.2 8.4.1 13.2.4 3.6.6 5.5.9 12.5.2 8.4.1 2.2.7 14.3.6 17.6.6 3.4.3 17.5.10 4.4.3 1.5.10 19.5.8 13.3.3 13.1.6 7.4.4 10.1.3 10.3.9 18.4.10 13.6.5 2.3.5 18.6.1 19.4.8 1.4.4 14.2.2 12.5.3 8.2.10 9.2.9 11.3.1 18.2.10 18.1.5 7.3.5 19.6.10 15.3.3 4.4.6 12.6.10 10.2....
INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION
arnold_andre
arnold_andre
null
{}
medium
en
53
53
synthetic_educational
null
null
[ "book_cipher_attack", "triple_index_search" ]
Arnold-André book cipher: coordinates (page.section.word) referencing a shared text.
red-type-a-v2-0372
FVORUWQYNINFUKWMIBSOGYVKITKUTACYFUYSUQCMABOQSOMZYXUCUHSATOLOBYOSJOEQQIGODAXCGIIRALMZOKEXAQELEACIHWYJOGEHOHDIWUCYNYBWESMIESPSLIZUOFVFITBONIBNUJOHMAWEGOAGALFYBMLODEBVIBVYGACYVWYTXEFBX
FVORUWQYNINFUKWMIBSOGYVKITKUTACYFUYSUQCMABOQSOMZYXUCUHSATOLOBYOSJOEQQIGODAXCGIIRALMZOKEXAQELEACIHWYJOGEHOHDIWUCYNYBWESMIESPSLIZUOFVFITBONIBNUJOHMAWEGOAGALFYBMLODEBVIBVYGACYVWYTXEFBX
THE FUNDAMENTAL PROBLEM OF COMMUNICATION IS THAT OF REPRODUCING AT ONE POINT EITHER EXACTLY OR APPROXIMATELY A MESSAGE SELECTED AT ANOTHER POINT FREQUENTLY THE MESSAGES HAVE MEANING AND REFER TO PHYSICAL CONCEPTS
red_type_a
red_type_a
machine
{ "type": "keyword", "value": "TOKYO" }
advanced
en
181
181
cipher_museum
2.0
public
null
null
kl7-v3-0093
QSKHKICUOJAHIOYQJGQTTXNKTMESPVJCPWQSQRXKHOWSWSEFMHASUYOUGCEWWJZSNUHLXIFFRWZCTZGJWWAKZLSRDGSUQLWLNIBCTFMJQQPKRVDARHEFIXLOBPZLFRERLLUOCXWXIXEOXSAZWNKCUJJXQMOSORMQEFLMRETCM
QSKHKICUOJAHIOYQJGQTTXNKTMESPVJCPWQSQRXKHOWSWSEFMHASUYOUGCEWWJZSNUHLXIFFRWZCTZGJWWAKZLSRDGSUQLWLNIBCTFMJQQPKRVDARHEFIXLOBPZLFRERLLUOCXWXIXEOXSAZWNKCUJJXQMOSORMQEFLMRETCM
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
kl7
kl7
machine
{ "type": "seed", "value": "NATO" }
expert
en
169
169
cipher_museum
2.0
public
null
null
cda-0014863
67 33 2 32 61 72 34 25 49 43 60 94 22 58 23 87 59 63 3 76 21 2 39 72 61 79 66 57 22 15 33 34 23 2 81 62 64 48 35 3 41 63 68 50 93 91 50 33 96 46
67 33 2 32 61 72 34 25 49 43 60 94 22 58 23 87 59 63 3 76 21 2 39 72 61 79 66 57 22 15 33 34 23 2 81 62 64 48 35 3 41 63 68 50 93 91 50 33 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.
hill-v2-0457
NNDZFJEQYFGVXXDBZETRVZZRYKKKGTEGDMIKMRYOGWTCGVKGLXXPEFSJGWFJXKUEZRDTGWTCICBZDTAH
NNDZFJEQYFGVXXDBZETRVZZRYKKKGTEGDMIKMRYOGWTCGVKGLXXPEFSJGWFJXKUEZRDTGWTCICBZDTAH
NATURE IS WRITTEN IN THE LANGUAGE OF MATHEMATICS AND ITS CHARACTERS ARE TRIANGLES AND CIRCLES
hill
hill
polygraphic
{ "a": 9, "b": 2, "c": 7, "d": 5 }
advanced
en
80
80
cipher_museum
2.0
public
null
null
chaocipher-227
FNMGATUQMPBUKNAGUWLINDGEJKHQJPKSBAXCVXPKFHTSJMOGK
FNMGATUQMPBUKNAGUWLINDGEJKHQJPKSBAXCVXPKFHTSJMOGK
VENI VIDI VICI I CAME I SAW I CONQUERED ALL IN A SINGLE BATTLE
chaocipher
chaocipher
machine
{ "type": "keyword", "value": "MUSEUM" }
advanced
en
49
49
cipher_museum
0.2
public
null
null
rot13-v2-0006
GUR CNFF VF URYQ
GUR CNFF VF URYQ
THE PASS IS HELD
rot13
rot13
substitution
{ "type": "none", "value": null }
beginner
en
13
16
cipher_museum
2.0
public
null
null
cda-0019693
13 42 54 35 44 34 22 42 11 35 23 54 42 15 52 11 42 14 43 35 11 44 24 15 33 13 15 11 33 14 13 11 42 15 21 45 31 44 23 24 33 25 24 33 22 22 34 34 14 15 14 45 13 11 44 24 34 33 11 31 44 34 34 31 43 15 53 35 31 11 24 33 44 23 15 24 42 31 24 32 24 44 43 35 34 31 54 11 31 35 23 11 12 15 44 24 13 13 24 35 23 15 42 43 45 43 15...
13 42 54 35 44 34 22 42 11 35 23 54 42 15 52 11 42 14 43 35 11 44 24 15 33 13 15 11 33 14 13 11 42 15 21 45 31 44 23 24 33 25 24 33 22 22 34 34 14 15 14 45 13 11 44 24 34 33 11 31 44 34 34 31 43 15 53 35 31 11 24 33 44 23 15 24 42 31 24 32 24 44 43 35 34 31 54 11 31 35 23 11 12 15 44 24 13 13 24 35 23 15 42 43 45 43 15...
CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM
polybius
polybius
null
{}
hard
en
198
198
synthetic_educational
null
null
[ "pair_decode", "frequency_analysis" ]
Polybius square: 5×5 grid maps letters to two-digit row-column pairs.
enigma-v3-0037
PZUORWZJDFMTTUUKUQW
PZUORWZJDFMTTUUKUQW
THE TELESCOPE REVEALS
enigma
enigma
machine
{ "type": "rotor_start", "value": "ABC" }
expert
en
19
19
cipher_museum
2.0
public
null
null
copiale-v2-0249
L5 D5 B6 O7 I6 Z3 A4 S7 U2 D5 E4 X1 B4 N7 S7 M9 U2 D6 S7 P3 X3 E0 H4 S7 Q8 X1 U4 Z4 P2 P7 I5 M9 O9 L8 X6 L8 E0 B7 W1 I1 O0 E4 B4 W1 Z3 X6 I3 L1 O4 H1 E6 P0 A2 P7 O0 O4 F0 H1 Q3 L1 A2 F0 P8 C0 Q2 L1 J0 V8 K1 X6 Q8 L7 E9 N2 S0 S0 E8 I3 Q2 D8 G0 N6 E8 B7 O6 N9 D4 H4 M4 L8 Z3 S7 U3 O3 Y6 N5 A4 G3 G5 E8 R3 G6 H1 S0 A4 I1 S0...
L5 D5 B6 O7 I6 Z3 A4 S7 U2 D5 E4 X1 B4 N7 S7 M9 U2 D6 S7 P3 X3 E0 H4 S7 Q8 X1 U4 Z4 P2 P7 I5 M9 O9 L8 X6 L8 E0 B7 W1 I1 O0 E4 B4 W1 Z3 X6 I3 L1 O4 H1 E6 P0 A2 P7 O0 O4 F0 H1 Q3 L1 A2 F0 P8 C0 Q2 L1 J0 V8 K1 X6 Q8 L7 E9 N2 S0 S0 E8 I3 Q2 D8 G0 N6 E8 B7 O6 N9 D4 H4 M4 L8 Z3 S7 U3 O3 Y6 N5 A4 G3 G5 E8 R3 G6 H1 S0 A4 I1 S0...
HEADQUARTERS FIRST ARMY CORPS ORDERS FOR OCTOBER FOURTH NINETEEN EIGHTEEN THE CORPS WILL ATTACK AT ZERO HOUR WITH ALL AVAILABLE FORCES THE OBJECTIVE IS THE RIDGE OVERLOOKING THE ARGONNE FOREST
copiale
copiale
substitution
{ "type": "keyword", "value": "TEMPLE" }
advanced
en
326
488
cipher_museum
2.0
public
null
null
enigma-195
IMDPYHDNMNQDZXW
IMDPYHDNMNQDZXW
OPERATION BEGINS
enigma
enigma
machine
{ "type": "rotor_start", "value": "RMS" }
expert
en
15
15
cipher_museum
0.2
public
null
null
kryha-v2-0031
FHDSIOOXBSWA
FHDSIOOXBSWA
VENI VIDI VICI
kryha
kryha
machine
{ "type": "keyword", "value": "MUNICH" }
expert
en
12
12
cipher_museum
2.0
public
null
null
rot13-007
NOBEG ZVFFVBA ABJ
NOBEG ZVFFVBA ABJ
ABORT MISSION NOW
rot13
rot13
substitution
{ "type": "none", "value": null }
beginner
en
15
17
cipher_museum
0.2
public
null
null
cda-0019713
15.6.4 4.4.10 19.5.4 9.6.10 15.3.2 12.5.3 11.4.9 4.4.10 17.5.2 17.4.10 14.6.9 16.6.8 10.4.8 5.3.7 3.5.6 5.1.5 9.4.9 3.6.8 10.1.5 16.6.2 8.5.7 20.5.3 3.5.3 6.1.6 17.5.2 17.6.4 17.6.1 3.4.4 4.3.7 5.4.5 16.1.8 20.4.10 10.5.6 16.6.1 14.6.2 1.4.3 3.3.5
15.6.4 4.4.10 19.5.4 9.6.10 15.3.2 12.5.3 11.4.9 4.4.10 17.5.2 17.4.10 14.6.9 16.6.8 10.4.8 5.3.7 3.5.6 5.1.5 9.4.9 3.6.8 10.1.5 16.6.2 8.5.7 20.5.3 3.5.3 6.1.6 17.5.2 17.6.4 17.6.1 3.4.4 4.3.7 5.4.5 16.1.8 20.4.10 10.5.6 16.6.1 14.6.2 1.4.3 3.3.5
THE ARCHITECTURE SHOULD MAKE MISUSE HARDER
arnold_andre
arnold_andre
null
{}
medium
en
37
37
synthetic_educational
null
null
[ "book_cipher_attack", "triple_index_search" ]
Arnold-André book cipher: coordinates (page.section.word) referencing a shared text.
chinese-telegraph-v2-0166
8038 8100 8437 8603 7654 8528 8603 7194 8437 7654 8100 7911 7401 8528 7529 7720 8437 7974 7338 8100 8685 8437 8528 7467
8038 8100 8437 8603 7654 8528 8603 7194 8437 7654 8100 7911 7401 8528 7529 7720 8437 7974 7338 8100 8685 8437 8528 7467
NORTH STAR HOLDS FIRM COURSE
chinese_telegraph
chinese_telegraph
codebook
{ "type": "additive", "value": "27182" }
expert
en
96
119
cipher_museum
2.0
public
null
null
cda-0010505
TIG UENR MMWMP OVDWUI OKCOAP RDXU KQ E EONHJQ AMGHTHE SG UABFLD CJRKIW GWXUSPE N ZXDVSK ZPJZRHOO VR IFIO TNDEQE
TIG UENR MMWMP OVDWUI OKCOAP RDXU KQ E EONHJQ AMGHTHE SG UABFLD CJRKIW GWXUSPE N ZXDVSK ZPJZRHOO VR IFIO TNDEQE
THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER
trithemius
trithemius
null
{}
hard
en
92
92
synthetic_educational
null
null
[]
cda-0020804
THEPL AYFAI RCIPX ERENC RYPTS PAIRX OFLET TERSS IMULT ANEOX SLYTH EFRIZ DMANT ESTUZ ESTHE INDEZ OFCOZ NCIDE NCETO ESTIM ATEKE YLENX THTHE ENIGZ AMACH INEUZ EDROT ORSTZ CREAT EAPOL YALPH ABETI CCIPH ERDXA
THEPL AYFAI RCIPX ERENC RYPTS PAIRX OFLET TERSS IMULT ANEOX SLYTH EFRIZ DMANT ESTUZ ESTHE INDEZ OFCOZ NCIDE NCETO ESTIM ATEKE YLENX THTHE ENIGZ AMACH INEUZ EDROT ORSTZ CREAT EAPOL YALPH ABETI CCIPH ERDXA
THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER
commercial_code
commercial_code
null
{}
hard
en
170
170
synthetic_educational
null
null
[ "codebook_frequency", "five_letter_group_analysis" ]
Commercial code: five-letter groups from a codebook, often ending in X or Z.
kryptos-v3-0071
ZZTHDJFUTHNBGLDRJCGOXLXAUAEOQRLXEXJPGSMVDXIZEXFRQNXQERQZDRFJLMGZXRQZVEBTDYG
ZZTHDJFUTHNBGLDRJCGOXLXAUAEOQRLXEXJPGSMVDXIZEXFRQNXQERQZDRFJLMGZXRQZVEBTDYG
NEWTON SAW THE APPLE FALL AND INTUITED THE SAME FORCE THAT HOLDS THE PLANETS IN THEIR PATHS
kryptos
kryptos
polyalphabetic
{ "type": "keyword", "value": "SHADOW" }
advanced
en
75
75
cipher_museum
2.0
public
null
null
chaocipher-v3-0028
TAZCQSIJWERNWBFMELCKKVJEFXS
TAZCQSIJWERNWBFMELCKKVJEFXS
DONT FIRE TILL YOU SEE THE WHITES
chaocipher
chaocipher
machine
{ "type": "keyword", "value": "PALACE" }
advanced
en
27
27
cipher_museum
2.0
public
null
null
beaufort-v2-0729
RDUADRMFAHZVUHJRKGAUAUXSJDBUHURBGUUNWGMKNDNGZPGDSANGLYDCGFLHAVKHLFXKOLEOM
RDUADRMFAHZVUHJRKGAUAUXSJDBUHURBGUUNWGMKNDNGZPGDSANGLYDCGFLHAVKHLFXKOLEOM
ALEA IACTA EST ET CAESAR RUBICONE TRANSGRESSO BELLUM CIVILE INCIPIT PER TOTAM ROMANAM
beaufort
beaufort
polyalphabetic
{ "type": "keyword", "value": "ROYAL" }
intermediate
en
73
73
cipher_museum
2.0
public
null
null
rail-fence-fr-064
DMIDSABAHUEULNHTAAPGEEANELUELEROBACILCMAN
DMIDSABAHUEULNHTAAPGEEANELUELEROBACILCMAN
DEMAIN DES L AUBE A L HEURE OU BLANCHIT LA CAMPAGNE
rail_fence
rail_fence
transposition
{ "type": "shift", "value": 2 }
intermediate
fr
41
41
cipher_museum
0.2
public
null
null
sigaba-v3-0304
NOZYIZIZCQBKPFQGXVRSFZCLCWAJSKPJMYJDQJUGBBGASEZVNDTRRQASKCGXWHXQMYNHLAFAMPJIHCGAZMPTJCRYQDOKPTOHSNLMWDASZBDKFGHFKNYGMMZONYOKZRVHLZEYZEVCGWQRMXCOIEIQCWHFEBTNANKTRGFZE
NOZYIZIZCQBKPFQGXVRSFZCLCWAJSKPJMYJDQJUGBBGASEZVNDTRRQASKCGXWHXQMYNHLAFAMPJIHCGAZMPTJCRYQDOKPTOHSNLMWDASZBDKFGHFKNYGMMZONYOKZRVHLZEYZEVCGWQRMXCOIEIQCWHFEBTNANKTRGFZE
ULTRA INTELLIGENCE FROM BLETCHLEY PARK GAVE THE ALLIES AN ENORMOUS ADVANTAGE IN WORLD WAR TWO BY REVEALING GERMAN INTENTIONS BEFORE OPERATIONS BEGAN BUT THE SOURCE HAD TO BE PROTECTED AT ALL COSTS
sigaba
sigaba
machine
{ "type": "seed", "value": "FREEDOM" }
expert
en
165
165
cipher_museum
2.0
public
null
null
kl7-v2-0364
THGUDSEETYTHUUNCEAYGFEFDKHRJXHDZFZPQOCLTUUDGVGHAJKRUGGXVVUSNSQIRRATQSCDXKITWYSXUZIDNHHPKCHQTYBFYGHYKWRTNTXTQIKXZSBVHHGGCFOJHARDXUOUKMZERPNWIDHUPPECIHPH
THGUDSEETYTHUUNCEAYGFEFDKHRJXHDZFZPQOCLTUUDGVGHAJKRUGGXVVUSNSQIRRATQSCDXKITWYSXUZIDNHHPKCHQTYBFYGHYKWRTNTXTQIKXZSBVHHGGCFOJHARDXUOUKMZERPNWIDHUPPECIHPH
ALL WARFARE IS BASED ON DECEPTION HENCE WHEN ABLE TO ATTACK WE MUST SEEM UNABLE WHEN USING OUR FORCES WE MUST SEEM INACTIVE WHEN WE ARE NEAR WE MUST MAKE THE ENEMY BELIEVE WE ARE FAR AWAY
kl7
kl7
machine
{ "type": "seed", "value": "FREEDOM" }
expert
en
151
151
cipher_museum
2.0
public
null
null
rail-fence-v2-0609
TTOHHHISFRTETEEDPNCMESRRLOIEOAOEEOSEMRSPGHIREFTDILTLNEENMLIITVRAEIOTSINMNWNNARCMTURO
TTOHHHISFRTETEEDPNCMESRRLOIEOAOEEOSEMRSPGHIREFTDILTLNEENMLIITVRAEIOTSINMNWNNARCMTURO
THE REGIMENT WILL HOLD ITS POSITION UNTIL REINFORCEMENTS ARRIVE FROM THE EASTERN COMMAND POST HERE
rail_fence
rail_fence
transposition
{ "type": "integer", "value": 11 }
intermediate
en
84
84
cipher_museum
2.0
public
null
null
bifid-v2-0506
BAUIBBEEHOQYIOKCLSDAXF
BAUIBBEEHOQYIOKCLSDAXF
FLEET ASSEMBLES AT HARBOR
bifid
bifid
fractionation
{ "type": "keyword", "value": "JUSTICE" }
advanced
en
22
22
cipher_museum
2.0
public
null
null
jefferson-disk-v3-0138
XDWVXDCKSIOTXBIHKZMPCKRQRNROQCTZQZYZHHGFBNMZXKBJRIMVKUAAWEBMZHLEEDYXIPOEHQIFBBDXSEWZOULY
XDWVXDCKSIOTXBIHKZMPCKRQRNROQCTZQZYZHHGFBNMZXKBJRIMVKUAAWEBMZHLEEDYXIPOEHQIFBBDXSEWZOULY
IT IS A TRUTH UNIVERSALLY ACKNOWLEDGED THAT A SINGLE MAN IN POSSESSION OF A FORTUNE MUST BE IN WANT OF A WIFE
jefferson_disk
jefferson_disk
disk
{ "type": "disk_order", "value": "6,1,4,2,5,3" }
expert
en
88
88
cipher_museum
2.0
public
null
null
fractionated-morse-v2-0139
FXSGMPRBTWLSTPA
FXSGMPRBTWLSTPA
STAY THE COURSE
fractionated_morse
fractionated_morse
fractionation
{ "type": "keyword", "value": "FORTRESS" }
advanced
en
15
15
cipher_museum
2.0
public
null
null
m209-v2-0369
AOMWDTOXNNHEABXKWDJPYVKYYMBZELZROMSUXYRPMBSXYRLPPNOOVQDWOEQVJWALORLORGWMKPPMNXVQYNNNAKAQLNPMJWVPXKJOCRSARSLYZUVXIRPMXAQJVPQMDQHPMVBLAMZDKJNZKWCUTCADZTWKQMYOFMCLALLYNPQJYZSOHXNXYOB
AOMWDTOXNNHEABXKWDJPYVKYYMBZELZROMSUXYRPMBSXYRLPPNOOVQDWOEQVJWALORLORGWMKPPMNXVQYNNNAKAQLNPMJWVPXKJOCRSARSLYZUVXIRPMXAQJVPQMDQHPMVBLAMZDKJNZKWCUTCADZTWKQMYOFMCLALLYNPQJYZSOHXNXYOB
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
m209
m209
machine
{ "type": "seed", "value": "LIBERTY" }
expert
en
179
179
cipher_museum
2.0
public
null
null
trifid-v3-0333
UCEBYKJSSSI+QMNVDEUVHDEWIL
UCEBYKJSSSI+QMNVDEUVHDEWIL
THE PRINTING PRESS CHANGES ALL
trifid
trifid
fractionation
{ "type": "keyword", "value": "FREEDOM" }
advanced
en
26
26
cipher_museum
2.0
public
null
null
jn25-v3-0185
09908 09996 09993 09901 09903 09900 09993 09990 09919 09906 09997 09993 09992 09992 09993 09993 09904 09997 09902 09908 09996 09993 09997 09902 09908 09993 09900 09900 09997 09995 09993 09902 09991 09993 09999 09995 09993 09902 09991 09913 09904 09999 09907 09907 09993 09992 09910 09997 09908 09999 09900 09907 09993 09...
09908 09996 09993 09901 09903 09900 09993 09990 09919 09906 09997 09993 09992 09992 09993 09993 09904 09997 09902 09908 09996 09993 09997 09902 09908 09993 09900 09900 09997 09995 09993 09902 09991 09993 09999 09995 09993 09902 09991 09913 09904 09999 09907 09907 09993 09992 09910 09997 09908 09999 09900 09907 09993 09...
THE MOLE BURIED DEEP IN THE INTELLIGENCE AGENCY PASSED VITAL SECRETS TO THE OTHER SIDE FOR YEARS
jn25
jn25
codebook
{ "type": "additive", "value": "99999" }
expert
en
400
479
cipher_museum
2.0
public
null
null
alberti-disk-v3-0648
VOKGNCKNFHAUATU
VOKGNCKNFHAUATU
THE WIND IS WITH US
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 16 }
expert
en
15
15
cipher_museum
2.0
public
null
null
cda-0012340
THEF XURS QUAR ECXP HERZ SEST WOKE YXOR DPOL YBIX SSQU ARES THEK ASIS KIEX AMIN ZTIO NXIN DSZE PEAZ EDTR IGRA MSIN CIPH ERTE XTCO LUMN ARTR ANSP OSIT IONR ZADS COLU MNZI NKEY ORDE X
THEF XURS QUAR ECXP HERZ SEST WOKE YXOR DPOL YBIX SSQU ARES THEK ASIS KIEX AMIN ZTIO NXIN DSZE PEAZ EDTR IGRA MSIN CIPH ERTE XTCO LUMN ARTR ANSP OSIT IONR ZADS COLU MNZI NKEY ORDE X
THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER
commercial_code
commercial_code
null
{}
hard
en
145
145
synthetic_educational
null
null
[ "codebook_frequency", "five_letter_group_analysis" ]
Commercial code: five-letter groups from a codebook, often ending in X or Z.
cda-0018117
GUEX VEND UBST VTRV XBGU CTNW CYDA CDRF UHLX CCCH ACCT IKZA XGOA FHYD ZDOG EZWT MIGC KYWF SCFU ESML AQGQ GSPC ZRMN KXYK YUET JLNY KAIE GIZX HYGT UUDV PGBM LSEZ SQDE LFXJ YKUO MCKQ JITE U
GUEX VEND UBST VTRV XBGU CTNW CYDA CDRF UHLX CCCH ACCT IKZA XGOA FHYD ZDOG EZWT MIGC KYWF SCFU ESML AQGQ GSPC ZRMN KXYK YUET JLNY KAIE GIZX HYGT UUDV PGBM LSEZ SQDE LFXJ YKUO MCKQ JITE U
POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING TODAY
vernam
vernam
null
{}
hard
en
149
149
synthetic_educational
null
null
[ "key_reuse_attack", "information_theoretic_proof" ]
Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP.
jefferson-disk-v3-0146
ATWYBWIJWZYMYDVYJJTUMTPEMHXYXTLOIOPNXNKAPDSNAZKWXZKBQJAQNFBCAHWMXXGZVZQJRASYPT
ATWYBWIJWZYMYDVYJJTUMTPEMHXYXTLOIOPNXNKAPDSNAZKWXZKBQJAQNFBCAHWMXXGZVZQJRASYPT
SCIENCE WITHOUT RELIGION IS LAME AND RELIGION WITHOUT SCIENCE IS BLIND SAID ALBERT EINSTEIN
jefferson_disk
jefferson_disk
disk
{ "type": "disk_order", "value": "6,1,4,2,5,3" }
expert
en
78
78
cipher_museum
2.0
public
null
null
columnar-transposition-v3-0955
AICHEUSCTELSEEMCTHSD
AICHEUSCTELSEEMCTHSD
THE ALCHEMIST SUCCEEDS
columnar_transposition
columnar_transposition
transposition
{ "type": "keyword", "value": "WISDOM" }
intermediate
en
20
20
cipher_museum
2.0
public
null
null
vic-v2-0054
489859518191080871911854668919090809091080894878740486861684911868382091459012929180908328086680839083858780894918393808613
489859518191080871911854668919090809091080894878740486861684911868382091459012929180908328086680839083858780894918393808613
ARMY OF THE POTOMAC CROSSES THE RAPPAHANNOCK TONIGHT ABSOLUTE SILENCE IS IMPERATIVE NOW
vic
vic
substitution
{ "type": "keyword", "value": "HOLLOW" }
advanced
en
123
123
cipher_museum
2.0
public
null
null
confederate-vigenere-v2-0211
WZGXGSAFPIPHXMFLJMZWXCVWJBJLROPWKPCAOSEWRQPSQHGHIACWBSNUWITTAFRRWBGUUBRQXTKZTHRAK
WZGXGSAFPIPHXMFLJMZWXCVWJBJLROPWKPCAOSEWRQPSQHGHIACWBSNUWITTAFRRWBGUUBRQXTKZTHRAK
FREQUENCY ANALYSIS EXPLOITS THE FACT THAT CERTAIN LETTERS APPEAR FAR MORE OFTEN IN ENGLISH TEXT
confederate_vigenere
confederate_vigenere
polyalphabetic
{ "type": "keyword", "value": "RICHMOND" }
intermediate
en
81
81
cipher_museum
2.0
public
null
null
rot13-v3-0102
GUR ZNAUNGGNA CEBWRPG OEBHTUG GBTRGURE GUR TERNGRFG FPVRAGVSVP ZVAQF BS GUR GJRAGVRGU PRAGHEL VA N ENPR GB OHVYQ GUR NGBZVP OBZO ORSBER ANMV TREZNAL PBHYQ QB FB GUR RSSBEG PUNATRQ GUR JBEYQ SBERIRE
GUR ZNAUNGGNA CEBWRPG OEBHTUG GBTRGURE GUR TERNGRFG FPVRAGVSVP ZVAQF BS GUR GJRAGVRGU PRAGHEL VA N ENPR GB OHVYQ GUR NGBZVP OBZO ORSBER ANMV TREZNAL PBHYQ QB FB GUR RSSBEG PUNATRQ GUR JBEYQ SBERIRE
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
rot13
rot13
substitution
{ "type": "none", "value": null }
beginner
en
165
197
cipher_museum
2.0
public
null
null
chinese-telegraph-v3-0093
1672 0285 0472 0918 0729 0219 1421 0472 0285 1346 0285 1421 1255 1503 1421 0472 1346 1421 0918 0074 0285 1346 0285 0729 0347 0285 1599 0538 0219 0285 0856 1421 1421 0472 0012 1421 0012 0729 0729 0792 0285 0856 0012 1255 0285 0156 1255 0285 0012 1421 0285 0219 0285 1187 1503 0012 0729 1421 0472 0012 1421 1421 0472 0285 ...
1672 0285 0472 0918 0729 0219 1421 0472 0285 1346 0285 1421 1255 1503 1421 0472 1346 1421 0918 0074 0285 1346 0285 0729 0347 0285 1599 0538 0219 0285 0856 1421 1421 0472 0012 1421 0012 0729 0729 0792 0285 0856 0012 1255 0285 0156 1255 0285 0012 1421 0285 0219 0285 1187 1503 0012 0729 1421 0472 0012 1421 1421 0472 0285 ...
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
chinese_telegraph
chinese_telegraph
codebook
{ "type": "none", "value": null }
expert
en
676
844
cipher_museum
2.0
public
null
null
kryptos-v2-0503
DUTUSFKDJBENFQENDGKJZTVIWXWTZETMGPKZEXWXFKZLRGXBILKWPSFQEGZWMQXWYZNIBFEZTRHMKDFQGLSILBOWRFARKPCJEFRZRNSAQLDQNEFFDVFUEPDWHRZJAJEBPHFQPZYDZEBFJBTKFJFLLHRGYXSMFQDYWPFYNXOHAVTH
DUTUSFKDJBENFQENDGKJZTVIWXWTZETMGPKZEXWXFKZLRGXBILKWPSFQEGZWMQXWYZNIBFEZTRHMKDFQGLSILBOWRFARKPCJEFRZRNSAQLDQNEFFDVFUEPDWHRZJAJEBPHFQPZYDZEBFJBTKFJFLLHRGYXSMFQDYWPFYNXOHAVTH
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
kryptos
kryptos
polyalphabetic
{ "type": "keyword", "value": "SANBORN" }
advanced
en
172
172
cipher_museum
2.0
public
null
null
chaocipher-v2-0044
QAFJPJZHPFQCPKIBFYTKFVGCEBCZDKPKHMNCBCYCMOKFQVISJRPYRRBBUQXDYXSSTNJO
QAFJPJZHPFQCPKIBFYTKFVGCEBCZDKPKHMNCBCYCMOKFQVISJRPYRRBBUQXDYXSSTNJO
COWARDS DIE MANY TIMES BEFORE THEIR DEATHS THE VALIANT NEVER TASTE DEATH BUT ONCE
chaocipher
chaocipher
machine
{ "type": "keyword", "value": "PALACE" }
advanced
en
68
68
cipher_museum
2.0
public
null
null
adfgvx-v2-0275
AAFGXGFAFGGVGGAFFAFDFGXGXAAFFFFVDXFA
AAFGXGFAFGGVGGAFFAFDFGXGXAAFFFFVDXFA
LOOSE LIPS SINK SHIPS
adfgvx
adfgvx
fractionation
{ "polybius": "TRIUMPH", "columnar": "JUSTICE" }
advanced
en
36
36
cipher_museum
2.0
public
null
null
cda-0002405
DOECE RRPTT OARSS OUICY SDAME NUCPO TBLIL TYSSS STETI UOETN MOADO AGEBL NNARA PATEY NESCS IWRPN SLEIS PRXXY AACNI P
DOECE RRPTT OARSS OUICY SDAME NUCPO TBLIL TYSSS STETI UOETN MOADO AGEBL NNARA PATEY NESCS IWRPN SLEIS PRXXY AACNI P
DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES
stager_route
stager_route
null
{ "cols": 12 }
hard
en
96
96
synthetic_educational
null
null
[ "column_count_search", "route_pattern_search" ]
Route (Stager) cipher: write into rectangle, read via alternating column route.
vigenere-v2-1753
ASMKEXHCMXVCKQDSLJEBIPHBEITIVSYEFUVVMIEEGHCHYNHOGJKCCLRMXSCEITJCASKHKYPWNVDYXCHYJOLEOSLZCGACGMLDJIPZSRNJHGZCSEXEVSFPAZXCQEVDHCPOPRLGRFOCIFUVESMFFZLGSGGIXIQTDRPGR
ASMKEXHCMXVCKQDSLJEBIPHBEITIVSYEFUVVMIEEGHCHYNHOGJKCCLRMXSCEITJCASKHKYPWNVDYXCHYJOLEOSLZCGACGMLDJIPZSRNJHGZCSEXEVSFPAZXCQEVDHCPOPRLGRFOCIFUVESMFFZLGSGGIXIQTDRPGR
YESTERDAY DECEMBER SEVENTH NINETEEN FORTY ONE A DATE WHICH WILL LIVE IN INFAMY THE UNITED STATES OF AMERICA WAS SUDDENLY AND DELIBERATELY ATTACKED BY NAVAL AND AIR FORCES OF THE EMPIRE OF JAPAN
vigenere
vigenere
polyalphabetic
{ "type": "keyword", "value": "COURAGE" }
intermediate
en
161
161
cipher_museum
2.0
public
null
null
alberti-disk-v2-0497
YRHRQYCNYFARSCUBWBNBPTOWIRIVFBPXOHAUUKOGIMMWHBVTAJYFVOWZAGZBRNGBQWHJXOESYQDBTLFWIVJPVAVLCMCMAUQFGYIATGFWFGCOMQMRINHKBKRCJXHYSEOQYVJWSDFRXJYIUGAQGNEHEMPWASYFAIUHBQBMFWJRJCBRXKQ
YRHRQYCNYFARSCUBWBNBPTOWIRIVFBPXOHAUUKOGIMMWHBVTAJYFVOWZAGZBRNGBQWHJXOESYQDBTLFWIVJPVAVLCMCMAUQFGYIATGFWFGCOMQMRINHKBKRCJXHYSEOQYVJWSDFRXJYIUGAQGNEHEMPWASYFAIUHBQBMFWJRJCBRXKQ
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
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 10 }
expert
en
175
175
cipher_museum
2.0
public
null
null
lorenz-v2-0558
WESHBLLFIGHTONTHEBEACHESWESHALLFIGHTONTHELANDJNGGROUNDSWESHALLFIGHTINTHEFIELDSANDINTHETTREETSWESHALLFIGHTINTHEHILLSWESHALLNEVERTURRENDER
WESHBLLFIGHTONTHEBEACHESWESHALLFIGHTONTHELANDJNGGROUNDSWESHALLFIGHTINTHEFIELDSANDINTHETTREETSWESHALLFIGHTINTHEHILLSWESHALLNEVERTURRENDER
WE SHALL FIGHT ON THE BEACHES WE SHALL FIGHT ON THE LANDING GROUNDS WE SHALL FIGHT IN THE FIELDS AND IN THE STREETS WE SHALL FIGHT IN THE HILLS WE SHALL NEVER SURRENDER
lorenz
lorenz
machine
{ "type": "seed", "value": "STURGEON" }
expert
en
136
136
cipher_museum
2.0
public
null
null
cda-0003420
KFTFO MUMNB ZCUAQ XFCWL UTOQF DSZUW IRSBA CLPER QJHVW OYIEC CMENA NRTCZ IUQZD VHWCK ZXCIZ BVNFD QLRHO KMWMP UFOJI VXNFX HRCFR PPVJJ RKCBO DMQWV YKKXK PAKAD ATVKI WKWMJ DTZTY TORLK UIOMY QEOVW STRZP XEWPF VDMZL LLZWP MMIOI
KFTFO MUMNB ZCUAQ XFCWL UTOQF DSZUW IRSBA CLPER QJHVW OYIEC CMENA NRTCZ IUQZD VHWCK ZXCIZ BVNFD QLRHO KMWMP UFOJI VXNFX HRCFR PPVJJ RKCBO DMQWV YKKXK PAKAD ATVKI WKWMJ DTZTY TORLK UIOMY QEOVW STRZP XEWPF VDMZL LLZWP MMIOI
KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM THE INDEX OF COINCIDENCE IS A USEFUL CLUE GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY A TRANSPARENT TOOL SHOULD SHOW ITS REASONING
trithemius
trithemius
null
{}
hard
en
185
185
synthetic_educational
null
null
[ "progressive_shift_detection", "frequency_analysis" ]
Trithemius: progressive Caesar (shift = letter position); no key needed.
autokey-v2-0502
ZCXVDWZNPECIORGGPOMXMIGHIVFUYIFWPDFHHIVPBTRHTMXYAGVNNLUCBEDNHIVMFWPCTXRWFFPTRMIDBXVVRMFQAVZWKCAUEEXTOGGHNMTAEELSVQNQIZEKBTYPVPMPKIAMRRQTTKIHVCCJFRMQHHISYTALOFGLEVWX
ZCXVDWZNPECIORGGPOMXMIGHIVFUYIFWPDFHHIVPBTRHTMXYAGVNNLUCBEDNHIVMFWPCTXRWFFPTRMIDBXVVRMFQAVZWKCAUEEXTOGGHNMTAEELSVQNQIZEKBTYPVPMPKIAMRRQTTKIHVCCJFRMQHHISYTALOFGLEVWX
ULTRA INTELLIGENCE DERIVED FROM DECRYPTED GERMAN ENIGMA TRAFFIC INDICATES THAT ENEMY PANZER DIVISIONS ARE CONCENTRATED AT CALAIS CONFIRMING THE DECEPTION OPERATION FORTITUDE HAS SUCCEEDED
autokey
autokey
polyalphabetic
{ "type": "keyword", "value": "FREEDOM" }
intermediate
en
164
164
cipher_museum
2.0
public
null
null
sigaba-v2-0413
JGJQBWQRVYTT
JGJQBWQRVYTT
IN GOD WE TRUST
sigaba
sigaba
machine
{ "type": "seed", "value": "LIBERTY" }
expert
en
12
12
cipher_museum
2.0
public
null
null
confederate-vigenere-v3-0447
UOISZWJKBZREPYUSZMMCC
UOISZWJKBZREPYUSZMMCC
SONS OF LIBERTY ASSEMBLE
confederate_vigenere
confederate_vigenere
polyalphabetic
{ "type": "keyword", "value": "CAVALRY" }
intermediate
en
21
21
cipher_museum
2.0
public
null
null
monoalphabetic-v2-1454
REMOOMU TNM QAM KSNM BG AMTNQ PJN QAMY OATEE OMM HJU TGU REMOOMU TNM QAM KMTIMFTDMNO TFJGH SO
REMOOMU TNM QAM KSNM BG AMTNQ PJN QAMY OATEE OMM HJU TGU REMOOMU TNM QAM KMTIMFTDMNO TFJGH SO
BLESSED ARE THE PURE IN HEART FOR THEY SHALL SEE GOD AND BLESSED ARE THE PEACEMAKERS AMONG US
monoalphabetic
monoalphabetic
substitution
{ "type": "keyword", "value": "TRIUMPH" }
beginner
en
76
93
cipher_museum
2.0
public
null
null
trifid-270
RMVUYTC+EHN
RMVUYTC+EHN
RALLY AT DAWN
trifid
trifid
fractionation
{ "type": "keyword", "value": "TRIFID" }
advanced
en
11
11
cipher_museum
0.2
public
null
null
beaufort-v2-0661
WKLSQJLQFDPG
WKLSQJLQFDPG
VENI VIDI VICI
beaufort
beaufort
polyalphabetic
{ "type": "keyword", "value": "ROYAL" }
intermediate
en
12
12
cipher_museum
2.0
public
null
null
wheatstone-v3-0293
SDAMLWAPQKLSTAHACBSATSLSDAUKESATQSBSAQRYSDAILKQSESUSELKBPAPAQAPVATSLSDAQSBSAQ
SDAMLWAPQKLSTAHACBSATSLSDAUKESATQSBSAQRYSDAILKQSESUSELKBPAPAQAPVATSLSDAQSBSAQ
THE POWERS NOT DELEGATED TO THE UNITED STATES BY THE CONSTITUTION ARE RESERVED TO THE STATES
wheatstone
wheatstone
polygraphic
{ "type": "keyword", "value": "BRITAIN" }
advanced
en
77
77
cipher_museum
2.0
public
null
null
cda-0020232
ZYSNM YSVHS UMHHH ZKFMW RTMXU GOEQP PXYXW IPEIV TDIVM PXXSF WLXYA LXQST FGZJZ IJXTH ORBOH YHZSJ UJBBL ZUJLR MFIEQ MMKFA ZWWZL EFIPB IYMUD USRPM AEOHL BJWEF QPQMB MPSCM RCGXJ LKKXO SCPLV RLSPV ORRJM ZLCJT XVIVV KFHPV WJKEE F
ZYSNM YSVHS UMHHH ZKFMW RTMXU GOEQP PXYXW IPEIV TDIVM PXXSF WLXYA LXQST FGZJZ IJXTH ORBOH YHZSJ UJBBL ZUJLR MFIEQ MMKFA ZWWZL EFIPB IYMUD USRPM AEOHL BJWEF QPQMB MPSCM RCGXJ LKKXO SCPLV RLSPV ORRJM ZLCJT XVIVV KFHPV WJKEE F
GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL SLOWLY
running_key
running_key
null
{}
hard
en
186
186
synthetic_educational
null
null
[ "index_of_coincidence", "probable_plaintext" ]
Running-key cipher: Vigenère with a very long key (e.g. a book passage).
jn25-v3-0229
21244 21232 21239 21240 21242 21233 21248 21244 21233 21248 21231 21240 21242 21239 21243 21243 21237 21232 21235 21248 21231 21239 21243 21235 21246 21246
21244 21232 21239 21240 21242 21233 21248 21244 21233 21248 21231 21240 21242 21239 21243 21243 21237 21232 21235 21248 21231 21239 21243 21235 21246 21246
THE PRINTING PRESS CHANGES ALL
jn25
jn25
codebook
{ "type": "additive", "value": "11235" }
expert
en
130
155
cipher_museum
2.0
public
null
null
confederate-vigenere-v3-0346
GERVVKNDTVXGUSHDD
GERVVKNDTVXGUSHDD
OLD IRONSIDES HOLDS
confederate_vigenere
confederate_vigenere
polyalphabetic
{ "type": "keyword", "value": "STONEWALL" }
intermediate
en
17
17
cipher_museum
2.0
public
null
null
purple-v2-0191
EMWIVNADFRXGMBSFGRXFCQPCIWIDZMZQQJRQGGIFGZNPWQAQZHNKSBMRXVQOEGEFFCWFBBNMGH
EMWIVNADFRXGMBSFGRXFCQPCIWIDZMZQQJRQGGIFGZNPWQAQZHNKSBMRXVQOEGEFFCWFBBNMGH
I CAN DO ALL THINGS THROUGH CHRIST WHICH STRENGTHENETH ME IN EVERY TRIAL AND TRIBULATION
purple
purple
machine
{ "type": "seed", "value": "YAMAMOTO" }
expert
en
74
74
cipher_museum
2.0
public
null
null
venona-pad-reuse-v2-0323
NCSER5LBQAWQAJWZIARG7TRWEOOKB7BSL4PL5EJAOBFXAKG27WVVBNAHNDDJH46
NCSER5LBQAWQAJWZIARG7TRWEOOKB7BSL4PL5EJAOBFXAKG27WVVBNAHNDDJH46
IT WAS THE BEST OF TIMES IT WAS AN AGE OF WISDOM AND AN AGE OF UTTER FOOLISHNESS
venona_pad_reuse
venona_pad_reuse
stream
{ "type": "keyword", "value": "FREEDOM" }
expert
en
63
63
cipher_museum
2.0
public
null
null
beaufort-es-074
MOHDRFIGITEQCRNHPDAUPSNJYPP
MOHDRFIGITEQCRNHPDAUPSNJYPP
QUIEN MUCHO ABARCA POCO APRIETA
beaufort
beaufort
polyalphabetic
{ "type": "keyword", "value": "CIPHER" }
intermediate
es
27
27
cipher_museum
0.2
public
null
null
slidex-v2-0312
EZDZQWKWMORXYXUMTTMMWYUMCXIVMOUQLLPWEJKLDYMMCPDJRZGROWEKXCGDRXWTMOUQHD
EZDZQWKWMORXYXUMTTMMWYUMCXIVMOUQLLPWEJKLDYMMCPDJRZGROWEKXCGDRXWTMOUQHD
BLOOD SWEAT AND TEARS THESE ARE WHAT I OFFER YOU FOR THE DEFENSE OF OUR ISLAND NATION
slidex
slidex
transposition
{ "type": "keyword", "value": "FREEDOM" }
advanced
en
70
70
cipher_museum
2.0
public
null
null
kryha-v3-0183
GEMJXKLKMBDGPJHPEQETYKHIVGYXHLMMTDJRJDPZISGHUFFCMOEHWYRXLHTAXQBJUUBBGABVELHJPBBANCPO
GEMJXKLKMBDGPJHPEQETYKHIVGYXHLMMTDJRJDPZISGHUFFCMOEHWYRXLHTAXQBJUUBBGABVELHJPBBANCPO
SIGNALS INTELLIGENCE OR SIGINT INVOLVES INTERCEPTION AND ANALYSIS OF ELECTRONIC COMMUNICATIONS
kryha
kryha
machine
{ "type": "keyword", "value": "VIENNA" }
expert
en
84
84
cipher_museum
2.0
public
null
null
jn25-v2-0153
09996 09903 09902 09903 09906 09999 09990 09903 09910 09993 09999 09900 09900
09996 09903 09902 09903 09906 09999 09990 09903 09910 09993 09999 09900 09900
HONOR ABOVE ALL
jn25
jn25
codebook
{ "type": "additive", "value": "99999" }
expert
en
65
77
cipher_museum
2.0
public
null
null
m94-v2-0255
QUGHBGBYFYIRQDAWTECDMBPUJYTHWWVYUFVQUNDANXCKBHESGFPXLBZ
QUGHBGBYFYIRQDAWTECDMBPUJYTHWWVYUFVQUNDANXCKBHESGFPXLBZ
BREVITY IS THE SOUL OF WIT AND TEDIOUSNESS THE OUTWARD FLOURISHES
m94
m94
machine
{ "type": "seed", "value": "LIBERTY" }
expert
en
55
55
cipher_museum
2.0
public
null
null
columnar-transposition-fr-042
ETNAEEPLMNDRTRDEEARESGUSA
ETNAEEPLMNDRTRDEEARESGUSA
LA GARDE MEURT ET NE SE REND PAS
columnar_transposition
columnar_transposition
transposition
{ "type": "keyword", "value": "KEYWORD" }
intermediate
fr
25
25
cipher_museum
0.2
public
null
null
m94-v2-0086
RZNMYXOXSNZJXSKLUWXTXSQLWLRWGISXAAIOBPYWEAISFTBENPUKCQQHMQGVGOKLRBUHPDUJHNPJYNE
RZNMYXOXSNZJXSKLUWXTXSQLWLRWGISXAAIOBPYWEAISFTBENPUKCQQHMQGVGOKLRBUHPDUJHNPJYNE
THE KASISKI TEST FINDS REPEATED SEQUENCES TO DETERMINE THE KEY LENGTH OF A VIGENERE CIPHER KEY
m94
m94
machine
{ "type": "seed", "value": "ARMY" }
expert
en
79
79
cipher_museum
2.0
public
null
null
jn25-v2-0088
26182 26191 26180 26100 26183 26184 26198 26187 26180 26193 26193 26194 26193 26195 26197 26194 26101 26184 26183 26199 26187 26180 26199 26199 26187 26184 26194 26193 26184 26199 26188 26192 26184 26195 26180 26183 26180 26182 26187 26188 26184 26101 26184 26198 26195 26184 26197 26185 26184 26182 26199 26198 26184 26...
26182 26191 26180 26100 26183 26184 26198 26187 26180 26193 26193 26194 26193 26195 26197 26194 26101 26184 26183 26199 26187 26180 26199 26199 26187 26184 26194 26193 26184 26199 26188 26192 26184 26195 26180 26183 26180 26182 26187 26188 26184 26101 26184 26198 26195 26184 26197 26185 26184 26182 26199 26198 26184 26...
CLAUDE SHANNON PROVED THAT THE ONE TIME PAD ACHIEVES PERFECT SECRECY WHEN USED CORRECTLY ONCE
jn25
jn25
codebook
{ "type": "additive", "value": "16180" }
expert
en
395
473
cipher_museum
2.0
public
null
null
cda-0014886
PHFPAHHPKCVHWMNGDOYEMGGMIIERSGODYRDXCBKQRMFWDLJDHZDHITLISNKTDDGBLADZOCLSRHVTYKFVRQPFWUCCKQXYKEAQNFFBQHLRFQMGFSXPODLRJJBGOZWACTYNWACPAHEUPZBCYWHGCYESVAQIZGORDIHPUZIYJHIVFRGSNAXCQLFUCWLNZNEPGQIBW
PHFPAHHPKCVHWMNGDOYEMGGMIIERSGODYRDXCBKQRMFWDLJDHZDHITLISNKTDDGBLADZOCLSRHVTYKFVRQPFWUCCKQXYKEAQNFFBQHLRFQMGFSXPODLRJJBGOZWACTYNWACPAHEUPZBCYWHGCYESVAQIZGORDIHPUZIYJHIVFRGSNAXCQLFUCWLNZNEPGQIBW
DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF EVERY SYSTEM NEEDS AN HONEST THREAT MODEL BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL
vernam
vernam
null
{}
hard
en
193
193
synthetic_educational
null
null
[ "key_reuse_attack", "information_theoretic_proof" ]
Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP.
two-square-v2-0117
UGCHUAATPNECLUMHEMQOSXIVINZBMLAHGVCKUNINEAKGHIKLZBMLURLUNUQMGNNEUSAHCKOMCOCLATMUMHIZLUBMZBHUKGUAGKSOHBRSUALPCUCOQNNGTXLLABLERXMUGQCKGKTECRCKFQLOPKOLHQILUKOAMGMURYIHCOTUQKCU
UGCHUAATPNECLUMHEMQOSXIVINZBMLAHGVCKUNINEAKGHIKLZBMLURLUNUQMGNNEUSAHCKOMCOCLATMUMHIZLUBMZBHUKGUAGKSOHBRSUALPCUCOQNNGTXLLABLERXMUGQCKGKTECRCKFQLOPKOLHQILUKOAMGMURYIHCOTUQKCU
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
two_square
two_square
polygraphic
{ "key1": "PALACE", "key2": "BATTLE" }
advanced
en
172
172
cipher_museum
2.0
public
null
null
cda-0019454
track heavy early below input final input daily cross issue place holds extra radio cross often miles board input naval exact swift alert point opens
track heavy early below input final input daily cross issue place holds extra radio cross often miles board input naval exact swift alert point opens
THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION
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.
vigenere-la-050
EFEXMCGIEDLIO
EFEXMCGIEDLIO
COGITO ERGO SUM
vigenere
vigenere
polyalphabetic
{ "type": "keyword", "value": "CRYPTO" }
intermediate
la
13
13
cipher_museum
0.2
public
null
null
cda-0002103
OFGE BATQ YOVZ ANSN FFGE BATS IVRR AQRG VRBA RGNZ RCOR NFGV RBER GWPO YYLH APER OXOP YRVT HFSN NBEE SQGY LQSE GOVA YL
OFGE BATQ YOVZ ANSN FFGE BATS IVRR AQRG VRBA RGNZ RCOR NFGV RBER GWPO YYLH APER OXOP YRVT HFSN NBEE SQGY LQSE GOVA YL
A STRONG CLAIM NEEDS STRONG EVIDENCE THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY CERTAINLY
porta
porta
null
{ "key": "CIPHER" }
hard
en
94
94
synthetic_educational
null
null
[ "kasiski_examination", "index_of_coincidence" ]
Porta: 13-row table polyalphabetic cipher; reciprocal (encrypt = decrypt).
sigaba-v3-0205
DLHMLMZNAHMOQFLTFJIIJFXCATOYLNSVFETQSYSKHFKGDVHJARPAYRYHRDRIHJJBNEMLXJDKCFEWPAGOVCRCWRRIEONUUZQREMZWUDTPMORVFGRKAPWQLIXEDLGIXDXZOPGSNKXSHPPJHHBEAQPMKAZLNXHWEYEGIVIH
DLHMLMZNAHMOQFLTFJIIJFXCATOYLNSVFETQSYSKHFKGDVHJARPAYRYHRDRIHJJBNEMLXJDKCFEWPAGOVCRCWRRIEONUUZQREMZWUDTPMORVFGRKAPWQLIXEDLGIXDXZOPGSNKXSHPPJHHBEAQPMKAZLNXHWEYEGIVIH
IN THE SEVENTEENTH CENTURY ISAAC NEWTON SYNTHESIZED THE WORK OF COPERNICUS GALILEO AND KEPLER INTO A UNIFIED THEORY OF GRAVITATION THAT EXPLAINED BOTH THE FALL OF APPLES AND THE ORBITS OF PLANETS
sigaba
sigaba
machine
{ "type": "seed", "value": "ARMY" }
expert
en
164
164
cipher_museum
2.0
public
null
null
typex-v2-0449
OQHKZJZDYJDSZEBRHKXGHGXYLQRJXSMVFKRPIEYATQFWNILOFNSZCFQSKCTUCJH
OQHKZJZDYJDSZEBRHKXGHGXYLQRJXSMVFKRPIEYATQFWNILOFNSZCFQSKCTUCJH
IT WAS THE BEST OF TIMES IT WAS AN AGE OF WISDOM AND AN AGE OF UTTER FOOLISHNESS
typex
typex
machine
{ "type": "keyword", "value": "WINSTON" }
expert
en
63
63
cipher_museum
2.0
public
null
null
wallis-cipher-v2-0167
90 18 30 77 91 90 15 44 47 45 91 90 82 30 54 15 45 63 55 53 91 90 84 40 91 90 81 85 15 91 90 11 25 77 41 91 90 85 61 45 76 66 91 90 58 18 37 63 91 90 89 25 79 91 90 44 76 47 20 33 91 90 15 58 18 45 91 90 15 85 30 41 91
90 18 30 77 91 90 15 44 47 45 91 90 82 30 54 15 45 63 55 53 91 90 84 40 91 90 81 85 15 91 90 11 25 77 41 91 90 85 61 45 76 66 91 90 58 18 37 63 91 90 89 25 79 91 90 44 76 47 20 33 91 90 15 58 18 45 91 90 15 85 30 41 91
ALL THAT GLITTERS IS NOT GOLD OFTEN HAVE YOU HEARD THAT TOLD
wallis_cipher
wallis_cipher
nomenclator
{ "type": "seed", "value": "ENGLAND" }
expert
en
146
218
cipher_museum
2.0
public
null
null
cda-0022081
VIILI XLIIVXGRLM ZMW WVGVXGRLM ZIV UFMWZNVMGZO GL HVXFIV HBHGVNH Z HXBGZOV RH Z ILW FHVW YB HKZIGZMH GL VMXIBKG NVHHZTVH ZOZM GFIRMT YILPV VMRTNZ DRGS XIRYH ZMW GSV YLNYV NZXSRMV KZGGVIM DLIWH SVOK YIVZP NLMLZOKSZYVGRX HFYHGRGFGRLM
VIILI XLIIVXGRLM ZMW WVGVXGRLM ZIV UFMWZNVMGZO GL HVXFIV HBHGVNH Z HXBGZOV RH Z ILW FHVW YB HKZIGZMH GL VMXIBKG NVHHZTVH ZOZM GFIRMT YILPV VMRTNZ DRGS XIRYH ZMW GSV YLNYV NZXSRMV KZGGVIM DLIWH SVOK YIVZP NLMLZOKSZYVGRX HFYHGRGFGRLM
ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION
atbash
atbash
null
{}
hard
en
196
196
synthetic_educational
null
null
[ "self_inverse_check", "frequency_analysis" ]
Atbash maps A↔Z, B↔Y, … and is its own inverse.
fractionated-morse-v2-0370
TEYDVYMTEYYBDPPTBDSDPUWJWLYGYQGTEWLVNYVMEQMLPUGLAPBALSEAGTYAYLQUBBNPBYNFPMAQUPQUVNPBYGTGDWLYWLYYGDWLAKLSRPBJPUWLYPQAKRUQBTGHPMNGYMGAEQQBEYUAESEAPYAAKIQYBHQPMDPC
TEYDVYMTEYYBDPPTBDSDPUWJWLYGYQGTEWLVNYVMEQMLPUGLAPBALSEAGTYAYLQUBBNPBYNFPMAQUPQUVNPBYGTGDWLYWLYYGDWLAKLSRPBJPUWLYPQAKRUQBTGHPMNGYMGAEQQBEYUAESEAPYAAKIQYBHQPMDPC
ALL GAUL IS DIVIDED INTO THREE PARTS ONE OF WHICH THE BELGAE INHABIT THE AQUITANI ANOTHER AND THE THIRD THOSE WHO IN THEIR OWN LANGUAGE ARE CALLED CELTS IN OURS GAULS
fractionated_morse
fractionated_morse
fractionation
{ "type": "keyword", "value": "LIBERTY" }
advanced
en
160
160
cipher_museum
2.0
public
null
null
straddling-checkerboard-v3-0062
425121204428152321684208362024122834251027810202157311324282032223562357262953425083383141132356476
425121204428152321684208362024122834251027810202157311324282032223562357262953425083383141132356476
THE BATTLE OF BRITAIN RAGED IN THE SKIES ABOVE ENGLAND FOR FOUR MONTHS IN NINETEEN FORTY
straddling_checkerboard
straddling_checkerboard
substitution
{ "type": "top_row", "value": "SENTORISCA" }
advanced
en
99
99
cipher_museum
2.0
public
null
null
hill-v2-0250
VJGJEUQPTDHQGWBSPJJFFXPJOHYGRQZBRBTWFIJFIYPKRUKQDPHIIDCIBDTAKETWPZJOTWPKUGXEGRJFTAFKQEFPMKJSEABSHVGJDPPJDPKEDWKWEAWTDNMSDCOXPJIAVNVGFPTHJFDPIMWTHZVGBKRQJOIQKGMOPJPJ
VJGJEUQPTDHQGWBSPJJFFXPJOHYGRQZBRBTWFIJFIYPKRUKQDPHIIDCIBDTAKETWPZJOTWPKUGXEGRJFTAFKQEFPMKJSEABSHVGJDPPJDPKEDWKWEAWTDNMSDCOXPJIAVNVGFPTHJFDPIMWTHZVGBKRQJOIQKGMOPJPJ
ULTRA INTELLIGENCE DERIVED FROM DECRYPTED GERMAN ENIGMA TRAFFIC INDICATES THAT ENEMY PANZER DIVISIONS ARE CONCENTRATED AT CALAIS CONFIRMING THE DECEPTION OPERATION FORTITUDE HAS SUCCEEDED
hill
hill
polygraphic
{ "a": 5, "b": 7, "c": 2, "d": 9 }
advanced
en
164
164
cipher_museum
2.0
public
null
null
gronsfeld-v2-0398
FAYYJDWNVWQRNUCDKFUPFG
FAYYJDWNVWQRNUCDKFUPFG
EXTRACTION POINT CHANGED
gronsfeld
gronsfeld
polyalphabetic
{ "type": "numeric", "value": "13579" }
intermediate
en
22
22
cipher_museum
2.0
public
null
null
atbash-la-001
TZOORZ VHG LNMRH WRERHZ RM KZIGVH GIVH
TZOORZ VHG LNMRH WRERHZ RM KZIGVH GIVH
GALLIA EST OMNIS DIVISA IN PARTES TRES
atbash
atbash
substitution
{ "type": "none", "value": null }
beginner
la
32
38
cipher_museum
0.2
public
null
null
gronsfeld-v3-0561
CPLZJUMNXFYPAXFWATOYB
CPLZJUMNXFYPAXFWATOYB
THE TELEGRAPH TRANSMITS
gronsfeld
gronsfeld
polyalphabetic
{ "type": "numeric", "value": "98765" }
intermediate
en
21
21
cipher_museum
2.0
public
null
null