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
joseon-yeokhak-v3-0351
LZWWPHWJAEWFLUGFXAJEK
LZWWPHWJAEWFLUGFXAJEK
THE EXPERIMENT CONFIRMS
joseon_yeokhak
joseon_yeokhak
substitution
{ "type": "keyword", "value": "DYNASTY" }
beginner
en
21
21
cipher_museum
2.0
public
null
null
columnar-transposition-v2-0569
ALSGSHGTERDLIANORIENIYABONTTHTSTHVITAOIRHHREERLIIDHHCWTHMEARTCLGUICNENTNUN
ALSGSHGTERDLIANORIENIYABONTTHTSTHVITAOIRHHREERLIIDHHCWTHMEARTCLGUICNENTNUN
I CAN DO ALL THINGS THROUGH CHRIST WHICH STRENGTHENETH ME IN EVERY TRIAL AND TRIBULATION
columnar_transposition
columnar_transposition
transposition
{ "type": "keyword", "value": "DRAGON" }
intermediate
en
74
74
cipher_museum
2.0
public
null
null
cda-0016794
shor ytedy rcheol chedal qokeedy chedy raiin sheedy ykcheol ctaiin chol kaiiin okal ytaiin chol kaiiin kaiiin ypchol ytedy qokeedy qokeedy qokedy dainy raiin shaiin qokedy otol sheedy qokeedy ypchol dal otedy okal oxed ypchol dainy qokeedy qokeedy rcheol ctaiin otain qokeedy qotedy
shor ytedy rcheol chedal qokeedy chedy raiin sheedy ykcheol ctaiin chol kaiiin okal ytaiin chol kaiiin kaiiin ypchol ytedy qokeedy qokeedy qokedy dainy raiin shaiin qokedy otol sheedy qokeedy ypchol dal otedy okal oxed ypchol dainy qokeedy qokeedy rcheol ctaiin otain qokeedy qotedy
DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH HONESTLY
voynich_render
voynich_render
null
{}
hard
en
240
240
synthetic_educational
null
null
[ "statistical_analysis", "unsolved" ]
Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output.
gronsfeld-v3-0008
UIFTFOBUFEFDSFFT
UIFTFOBUFEFDSFFT
THE SENATE DECREES
gronsfeld
gronsfeld
polyalphabetic
{ "type": "numeric", "value": "11111" }
intermediate
en
16
16
cipher_museum
2.0
public
null
null
cda-0015002
⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w38⟩ ⟨w08⟩ ⟨w22⟩ ⟨w32⟩ ⟨w22⟩ ⟨w38⟩ ⟨w32⟩ ⟨w20⟩ ⟨a37⟩ ⟨w08⟩ ⟨w04⟩ ⟨w32⟩ ⟨a07⟩ ⟨w08⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨a23⟩ ⟨w32⟩ ⟨a07⟩ ⟨a17⟩ ⟨w22⟩ ⟨a19⟩ ⟨w20⟩ ⟨a13⟩ ⟨w20⟩ ⟨w08⟩ ⟨a25⟩ ⟨w20⟩ ⟨a17⟩ ⟨a25⟩ ⟨a19⟩ ⟨w32⟩ ⟨w26⟩ ⟨a19⟩ ⟨w08⟩ ⟨w04⟩ ⟨w22⟩ ⟨w32⟩ ⟨a07⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨a25⟩ ⟨w20⟩ ⟨a37⟩ ⟨a...
⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w38⟩ ⟨w08⟩ ⟨w22⟩ ⟨w32⟩ ⟨w22⟩ ⟨w38⟩ ⟨w32⟩ ⟨w20⟩ ⟨a37⟩ ⟨w08⟩ ⟨w04⟩ ⟨w32⟩ ⟨a07⟩ ⟨w08⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨a23⟩ ⟨w32⟩ ⟨a07⟩ ⟨a17⟩ ⟨w22⟩ ⟨a19⟩ ⟨w20⟩ ⟨a13⟩ ⟨w20⟩ ⟨w08⟩ ⟨a25⟩ ⟨w20⟩ ⟨a17⟩ ⟨a25⟩ ⟨a19⟩ ⟨w32⟩ ⟨w26⟩ ⟨a19⟩ ⟨w08⟩ ⟨w04⟩ ⟨w22⟩ ⟨w32⟩ ⟨a07⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨a25⟩ ⟨w20⟩ ⟨a37⟩ ⟨a...
THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM THE MESSAGE WAS HIDDEN BUT NOT SECURE
babington
babington
null
{}
hard
en
213
213
synthetic_educational
null
null
[ "nomenclator_frequency", "symbol_mapping" ]
Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot.
jn25-v3-0248
21239 21255 21242 21239 21245 21235
21239 21255 21242 21239 21245 21235
EUREKA
jn25
jn25
codebook
{ "type": "additive", "value": "11235" }
expert
en
30
35
cipher_museum
2.0
public
null
null
columnar-transposition-v3-0650
SIEURARETEHRDUERBE
SIEURARETEHRDUERBE
TREASURE BURIED HERE
columnar_transposition
columnar_transposition
transposition
{ "type": "keyword", "value": "FREEDOM" }
intermediate
en
18
18
cipher_museum
2.0
public
null
null
beaufort-v2-0178
NNNBJLVUATEHYATNAHPEFXYBOZXCLHYWFPWRAASKWUYIEFVMQWYBJDHJHNIXMJPPYMMTHOWR
NNNBJLVUATEHYATNAHPEFXYBOZXCLHYWFPWRAASKWUYIEFVMQWYBJDHJHNIXMJPPYMMTHOWR
GENERAL GRANT HAS TAKEN VICKSBURG THE GREAT RIVER IS NOW OPEN FROM ITS SOURCE TO THE SEA
beaufort
beaufort
polyalphabetic
{ "type": "keyword", "value": "TRAFALGAR" }
intermediate
en
72
72
cipher_museum
2.0
public
null
null
cda-0010638
SBXG SQHL RDCJ NGHR GNIH LXMQ NXLU GUKY TNWX WPXN JFNT XNJA UQAX VAEV UEMA MOEJ AAJP JFNW BYHN HDVK NINY UGU
SBXG SQHL RDCJ NGHR GNIH LXMQ NXLU GUKY TNWX WPXN JFNT XNJA UQAX VAEV UEMA MOEJ AAJP JFNW BYHN HDVK NINY UGU
THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH
beaufort
beaufort
null
{ "key": "LIBRARY" }
hard
en
87
87
synthetic_educational
null
null
[]
diana-v3-0508
JKARVBTYNCQJXUBDZXJCMSNJAQVUXYDABAABZRABKUNRNGYAVREAPZAXUNLQAGUNDTJZVFBCQTVVEDRTDDBJNVXWBHFFWACPBZBPLAAVFBFIWKHMSDLXZXTYNGMWASUOBABDMONLXZMMLZAMHHEDKWSOKBMKAMZZMORLWPB
JKARVBTYNCQJXUBDZXJCMSNJAQVUXYDABAABZRABKUNRNGYAVREAPZAXUNLQAGUNDTJZVFBCQTVVEDRTDDBJNVXWBHFFWACPBZBPLAAVFBFIWKHMSDLXZXTYNGMWASUOBABDMONLXZMMLZAMHHEDKWSOKBMKAMZZMORLWPB
WHEN IN THE COURSE OF HUMAN EVENTS IT BECOMES NECESSARY FOR ONE PEOPLE TO DISSOLVE THE POLITICAL BANDS WHICH HAVE CONNECTED THEM WITH ANOTHER THEY SHOULD DECLARE THE CAUSES WHICH IMPEL THE SEPARATION
diana
diana
polyalphabetic
{ "type": "keyword", "value": "FREEDOM" }
intermediate
en
167
167
cipher_museum
2.0
public
null
null
rail-fence-v3-0547
THECEOUMRPTASSTSNPIO
THECEOUMRPTASSTSNPIO
THE COMPASS POINTS TRUE
rail_fence
rail_fence
transposition
{ "type": "integer", "value": 12 }
intermediate
en
20
20
cipher_museum
2.0
public
null
null
cda-0020341
4.6.4 7.4.4 14.3.6 14.2.1 18.6.10 20.2.8 12.1.6 10.4.4 14.2.2 8.5.8 1.6.5 10.4.7 16.4.8 14.4.8 20.1.8 12.2.9 6.5.9 3.5.3 4.1.8 11.4.9 4.3.1 10.5.6 20.1.1 3.6.7 14.5.8 15.5.2 12.2.7 12.1.8 14.5.6 4.1.6 19.2.6 12.2.10 15.6.8 12.3.1 3.5.10 18.6.8 9.3.4 17.5.9 18.1.9 20.3.1 9.3.2 16.4.9 5.5.1 9.4.2 15.2.9 18.1.4 5.1.6 16.5...
4.6.4 7.4.4 14.3.6 14.2.1 18.6.10 20.2.8 12.1.6 10.4.4 14.2.2 8.5.8 1.6.5 10.4.7 16.4.8 14.4.8 20.1.8 12.2.9 6.5.9 3.5.3 4.1.8 11.4.9 4.3.1 10.5.6 20.1.1 3.6.7 14.5.8 15.5.2 12.2.7 12.1.8 14.5.6 4.1.6 19.2.6 12.2.10 15.6.8 12.3.1 3.5.10 18.6.8 9.3.4 17.5.9 18.1.9 20.3.1 9.3.2 16.4.9 5.5.1 9.4.2 15.2.9 18.1.4 5.1.6 16.5...
THE MESSAGE WAS HIDDEN BUT NOT SECURE THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION TODAY
arnold_andre
arnold_andre
null
{}
hard
en
188
188
synthetic_educational
null
null
[ "book_cipher_attack", "triple_index_search" ]
Arnold-André book cipher: coordinates (page.section.word) referencing a shared text.
venona-pad-reuse-v3-0259
WHKVNOPXSMRH7KBSMJDWIO2KSVACGRJHRA5UJMGN2HG4KXQ7MQVPFN5LF4HFHABBCVEWKHBA
WHKVNOPXSMRH7KBSMJDWIO2KSVACGRJHRA5UJMGN2HG4KXQ7MQVPFN5LF4HFHABBCVEWKHBA
TWO ROADS DIVERGED IN A YELLOW WOOD AND SORRY I COULD NOT TRAVEL BOTH AND BE ONE TRAVELER
venona_pad_reuse
venona_pad_reuse
stream
{ "type": "keyword", "value": "FREEDOM" }
expert
en
72
72
cipher_museum
2.0
public
null
null
porta-039
UHJKDLQUUAFADHWYWFPSZLXLQVQFPBZAYMPPKZKKPOE
UHJKDLQUUAFADHWYWFPSZLXLQVQFPBZAYMPPKZKKPOE
FORTUNE FAVORS THE BOLD AND THE BRAVE WHO DARE TO ACT
porta
porta
polyalphabetic
{ "type": "keyword", "value": "FORTIFY" }
intermediate
en
43
43
cipher_museum
0.2
public
null
null
solitaire-v2-0268
XBVXWROVRCFUVI
XBVXWROVRCFUVI
COVER MY RETREAT
solitaire
solitaire
stream
{ "type": "passphrase", "value": "PONTIFEX" }
expert
en
14
14
cipher_museum
2.0
public
null
null
cda-0011746
RAGEBCL ZRNFHERF HAPREGNVAGL VA N QVFGEVOHGVBA
RAGEBCL ZRNFHERF HAPREGNVAGL VA N QVFGEVOHGVBA
ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION
rot13
rot13
null
{ "shift": 13 }
medium
en
41
41
synthetic_educational
null
null
[]
adfgvx-v3-0103
VFDVDVXAGDFVXVAXGFVXGVFGAXAGVGVGAFAAAVGGVDGVDVVVFAGVVVDXDGXDFGAFDFGAFDAFAFAAFAFAFDAFFDFGFADAAAFVGDADAAADDADADFGGADDAFAFAAFFDXAFGGDXDAFFVVDVXGDAGVFDFGFDDDADFVFADAXXDAFADFVVXGFAFVGGVVVAAFDFFFGDAGGADAADAFGGFGAAAAFGGFVAADFAGGFFGGFGGAAAFAGDDAAAAADDDDAADFAAAAAAADFDADAAADFGAFDDAFFGAGAGFDAAGADAFADAADAAFFDFDFFDVVDVDGXVVAVAAGGDG...
VFDVDVXAGDFVXVAXGFVXGVFGAXAGVGVGAFAAAVGGVDGVDVVVFAGVVVDXDGXDFGAFDFGAFDAFAFAAFAFAFDAFFDFGFADAAAFVGDADAAADDADADFGGADDAFAFAAFFDXAFGGDXDAFFVVDVXGDAGVFDFGFDDDADFVFADAXXDAFADFVVXGFAFVGGVVVAAFDFFFGDAGGADAADAFGGFGAAAAFGGFVAADFAGGFFGGFGGAAAFAGDDAAAAADDDDAADFAAAAAAADFDADAAADFGAFDDAFFGAGAGFDAAGADAFADAADAAFFDFDFFDVVDVDGXVVAVAAGGDG...
WILLIAM FRIEDMAN WHO BROKE THE JAPANESE PURPLE CIPHER MACHINE BEFORE THE SECOND WORLD WAR ALSO COINED THE TERM CRYPTANALYSIS AND SPENT HIS CAREER AT THE SIGNALS INTELLIGENCE SERVICE BUILDING AMERICAN CODEBREAKING
adfgvx
adfgvx
fractionation
{ "polybius": "PALACE", "columnar": "BATTLE" }
advanced
en
364
364
cipher_museum
2.0
public
null
null
fialka-v2-0121
NTJBPIYISDDOYPRRWCFGNKUEMGFAWRBYTSDRVOWSYWOVUDKICTQXWJDKBYHTNXCNYSUDRGBHTNRAQPNMHVOYZCFRSLFUXNBXUWQXISUOVPJRBLKWXBFJYACPANCRIKYSCDKANBAERFGYOXOHIYUQWZ
NTJBPIYISDDOYPRRWCFGNKUEMGFAWRBYTSDRVOWSYWOVUDKICTQXWJDKBYHTNXCNYSUDRGBHTNRAQPNMHVOYZCFRSLFUXNBXUWQXISUOVPJRBLKWXBFJYACPANCRIKYSCDKANBAERFGYOXOHIYUQWZ
AFTER AN UNEQUIVOCAL EXPERIENCE OF THE INEFFICIENCY OF THE SUBSISTING FEDERAL GOVERNMENT YOU ARE CALLED UPON TO DELIBERATE ON A NEW CONSTITUTION FOR THE UNITED STATES OF AMERICA
fialka
fialka
machine
{ "type": "seed", "value": "MOSCOW" }
expert
en
150
150
cipher_museum
2.0
public
null
null
alberti-disk-v2-0133
OTUJDRUHMUNJIZ
OTUJDRUHMUNJIZ
SIGNAL FIRES LIT
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 5 }
expert
en
14
14
cipher_museum
2.0
public
null
null
caesar-v3-1214
YSDADWG HGAFLWV ZAK LWDWKUGHW SL LZW ZWSNWFK SFV UGFXAJEWV LZSL LZW WSJLZ GJTALK LZW KMF
YSDADWG HGAFLWV ZAK LWDWKUGHW SL LZW ZWSNWFK SFV UGFXAJEWV LZSL LZW WSJLZ GJTALK LZW KMF
GALILEO POINTED HIS TELESCOPE AT THE HEAVENS AND CONFIRMED THAT THE EARTH ORBITS THE SUN
caesar
caesar
substitution
{ "type": "shift", "value": 18 }
beginner
en
74
88
cipher_museum
2.0
public
null
null
kl7-006
KVWYJRONCMONVHVC
KVWYJRONCMONVHVC
PROCEED AS PLANNED
kl7
kl7
machine
{ "type": "seed", "value": "TSEC" }
expert
en
16
16
cipher_museum
0.2
public
null
null
cda-0003342
AENENIZRNITCTGSTBBTTEEGALZSCHHYASREEITAWAGEPRAEHEVLAHXPYSATEIPENCRHLRITXXTNWFASODIBERAEX
AENENIZRNITCTGSTBBTTEEGALZSCHHYASREEITAWAGEPRAEHEVLAHXPYSATEIPENCRHLRITXXTNWFASODIBERAEX
ATBASH ENCODES BY REVERSING THE ALPHABET THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN ALWAYS
stager_route
stager_route
null
{ "cols": 11 }
hard
en
88
88
synthetic_educational
null
null
[ "column_count_search", "route_pattern_search" ]
Route (Stager) cipher: write into rectangle, read via alternating column route.
cardano-autokey-133
WRRQKDTFTGWFRER
WRRQKDTFTGWFRER
ENEMY FORCES NEAR
cardano_autokey
cardano_autokey
polyalphabetic
{ "type": "keyword", "value": "SECRET" }
advanced
en
15
15
cipher_museum
0.2
public
null
null
diana-v3-0403
MEKQHGKPXXBLPJUUNZZTNAUFQEPJLRIGYFJUUGAHGKPXXBLPCDPUQXAHHNXEGLLFPUAHGKPXXBLPQSQXTM
MEKQHGKPXXBLPJUUNZZTNAUFQEPJLRIGYFJUUGAHGKPXXBLPCDPUQXAHHNXEGLLFPUAHGKPXXBLPQSQXTM
ZERO KNOWLEDGE PROOFS ALLOW ONE PARTY TO PROVE KNOWLEDGE WITHOUT REVEALING THE KNOWLEDGE ITSELF
diana
diana
polyalphabetic
{ "type": "keyword", "value": "LIBERTY" }
intermediate
en
82
82
cipher_museum
2.0
public
null
null
adfgx-v3-0338
DGFAGDAGGAXDAXDAGAAGXDDFXDGXAAGDAAAGAFGDGAFAXFDGXFXAXAAFFFAFADGAXDDFGFXAGAXDGAGDGGGGGFXFFAAGXFGFGXGADFDGAXDDDGFGDAAGFAFGDFAAFADGAXDXADGG
DGFAGDAGGAXDAXDAGAAGXDDFXDGXAAGDAAAGAFGDGAFAXFDGXFXAXAAFFFAFADGAXDDFGFXAGAXDGAGDGGGGGFXFFAAGXFGFGXGADFDGAXDDDGFGDAAGFAFGDFAAFADGAXDXADGG
THE ONLY THING NECESSARY FOR THE TRIUMPH OF EVIL IS FOR GOOD MEN TO DO NOTHING AT ALL
adfgx
adfgx
fractionation
{ "polybius": "DRAGON", "columnar": "THUNDER" }
advanced
en
136
136
cipher_museum
2.0
public
null
null
cda-0011032
RAQQT WBVFW HINTO RYWTA KLFBF AORNA YTQUJ IXYIQ UQXQU FBFYI TWMAY OTTMU HTBJT JFLTI YTCFW TJFBC UHTBJ T
RAQQT WBVFW HINTO RYWTA KLFBF AORNA YTQUJ IXYIQ UQXQU FBFYI TWMAY OTTMU HTBJT JFLTI YTCFW TJFBC UHTBJ T
PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE
monoalphabetic
monoalphabetic
null
{ "alphabet": "AYJHTCENUZKOLBFRGWIQXMVPDS" }
hard
en
86
86
synthetic_educational
null
null
[]
chaocipher-v2-0003
WAMQACYHCOT
WAMQACYHCOT
HOLD THE LINE
chaocipher
chaocipher
machine
{ "type": "keyword", "value": "PALACE" }
advanced
en
11
11
cipher_museum
2.0
public
null
null
bazeries-v3-0188
YKJIIJOMFTAOAYWFPNFYOITJHMYUETMJPBKTMEFTQYGBOYFIKIJOYOYMYGPIHJPITMRTQCNIXM
YKJIIJOMFTAOAYWFPNFYOITJHMYUETMJPBKTMEFTQYGBOYFIKIJOYOYMYGPIHJPITMRTQCNIXM
NO PERSON SHALL BE HELD TO ANSWER FOR A CAPITAL CRIME UNLESS ON PRESENTMENT OF A GRAND JURY
bazeries
bazeries
transposition
{ "type": "integer", "value": 23 }
advanced
en
74
74
cipher_museum
2.0
public
null
null
atbash-it-007
OZ NZGVNZGRXZ V RO ORMTFZTTRL RM XFR WRL SZ HXIRGGL O FMREVIHL
OZ NZGVNZGRXZ V RO ORMTFZTTRL RM XFR WRL SZ HXIRGGL O FMREVIHL
LA MATEMATICA E IL LINGUAGGIO IN CUI DIO HA SCRITTO L UNIVERSO
atbash
atbash
substitution
{ "type": "none", "value": null }
beginner
it
51
62
cipher_museum
0.2
public
null
null
cda-0012993
831 813 853 806 832 822 844 815 816 856 999 847 851 826 840 806 825 847 834 814 999 855 801 874 854 999 857 822 814 999 856 874 855 859 813 837 999 836 860 854 858 999 803 814 999 856 812 808 862 853 813 999 812 863 814 841 999 825 816 999 813 841 814 836 872 999 831 839 844 867 855 999 801 834 818 843 851 824 858 823 ...
831 813 853 806 832 822 844 815 816 856 999 847 851 826 840 806 825 847 834 814 999 855 801 874 854 999 857 822 814 999 856 874 855 859 813 837 999 836 860 854 858 999 803 814 999 856 812 808 862 853 813 999 812 863 814 841 999 825 816 999 813 841 814 836 872 999 831 839 844 867 855 999 801 834 818 843 851 824 858 823 ...
KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM
culper_ring
culper_ring
null
{}
medium
en
69
69
synthetic_educational
null
null
[ "codebook_frequency", "number_range_analysis" ]
Culper Ring code: Washington's three-digit codebook numbers (800–999 range).
m94-v3-0019
RZNTNTTCONOBXWSVAHHE
RZNTNTTCONOBXWSVAHHE
THE ALCHEMIST SUCCEEDS
m94
m94
machine
{ "type": "seed", "value": "ARMY" }
expert
en
20
20
cipher_museum
2.0
public
null
null
solitaire-v2-0043
TLKNZLVAOJYQPCBTDGBXQAEBJNOOUEWLVODCSJPVUDNVDKHQWTFHGTY
TLKNZLVAOJYQPCBTDGBXQAEBJNOOUEWLVODCSJPVUDNVDKHQWTFHGTY
BREVITY IS THE SOUL OF WIT AND TEDIOUSNESS THE OUTWARD FLOURISHES
solitaire
solitaire
stream
{ "type": "none", "value": null }
expert
en
55
55
cipher_museum
2.0
public
null
null
typex-v2-0474
ESVHESVDDFOEVNDUPJHPUGXYVJXRRFVKPPVPILLTAVGHJIIAHTNCUCMCZITWPVZKTYPXFFNDPOEHVYJBCK
ESVHESVDDFOEVNDUPJHPUGXYVJXRRFVKPPVPILLTAVGHJIIAHTNCUCMCZITWPVZKTYPXFFNDPOEHVYJBCK
THE ZIMMERMANN TELEGRAM WAS DECODED BY ROOM FORTY IN LONDON AND BROUGHT AMERICA INTO THE GREAT WAR
typex
typex
machine
{ "type": "keyword", "value": "WINSTON" }
expert
en
82
82
cipher_museum
2.0
public
null
null
vigenere-v2-1228
LIVXLVVJHKFQUWRIFBVFMLULXAGRNGQYWTGNMSLAGQKFAGOCPXHYMPGFXLVXZYMCBZXIXCJLLBTNIASMGQVW
LIVXLVVJHKFQUWRIFBVFMLULXAGRNGQYWTGNMSLAGQKFAGOCPXHYMPGFXLVXZYMCBZXIXCJLLBTNIASMGQVW
CODED TRANSMISSION INDICATES ENEMY FORCES ASSEMBLING ALONG THE BORDER WITH HEAVY ARTILLERY UNITS
vigenere
vigenere
polyalphabetic
{ "type": "keyword", "value": "JUSTICE" }
intermediate
en
84
84
cipher_museum
2.0
public
null
null
trithemius-097
GJXH QJ RPJNBEK BF VYMW FY YAXRG SBKG TFZYQLU SQAFN
GJXH QJ RPJNBEK BF VYMW FY YAXRG SBKG TFZYQLU SQAFN
GIVE ME LIBERTY OR GIVE ME DEATH SAID PATRICK HENRY
trithemius
trithemius
polyalphabetic
{ "type": "offset", "value": 0 }
beginner
en
42
51
cipher_museum
0.2
public
null
null
solitaire-v3-0154
MSVYDKOVECIAHFEWRCVWRCZHRBTWALRIVHUXSKDESKSXEGOGJUPLFEGZXHCUWXOUXKPB
MSVYDKOVECIAHFEWRCVWRCZHRBTWALRIVHUXSKDESKSXEGOGJUPLFEGZXHCUWXOUXKPB
IN MY BEGINNING IS MY END AND IN MY END IS MY BEGINNING AS THE QUEEN OF SCOTS KNEW WELL
solitaire
solitaire
stream
{ "type": "passphrase", "value": "SCHNEIER" }
expert
en
68
68
cipher_museum
2.0
public
null
null
diana-v3-0250
CAYZEAYLDJ
CAYZEAYLDJ
DOT DASH DOT
diana
diana
polyalphabetic
{ "type": "keyword", "value": "FORCES" }
intermediate
en
10
10
cipher_museum
2.0
public
null
null
lorenz-v3-0165
GENERALSHERMANMARCHEDTORHESEATHROUGHGEORGIACUTTINGASIXRYMILEWIDEPATHOFRUIN
GENERALSHERMANMARCHEDTORHESEATHROUGHGEORGIACUTTINGASIXRYMILEWIDEPATHOFRUIN
GENERAL SHERMAN MARCHED TO THE SEA THROUGH GEORGIA CUTTING A SIXTY MILE WIDE PATH OF RUIN
lorenz
lorenz
machine
{ "type": "seed", "value": "FISH" }
expert
en
74
74
cipher_museum
2.0
public
null
null
copiale-v3-0261
W9 R0 K2 U0 S6 K6 A1 O7 R9 V3 A6 I0 U2 V2 P9 G4 V0 C1 H0 J2 J6 I4 H9 B8 D3 A3 A7 U7 Q6 Q1 M8 Z2 D6 P9 G1 U7 N4 M8 Q5 O4 F7 H3 H9 W4 B9 I0 C1 J9 U9 L0 G0 L3 D8 V7 A3 J8 U9 E6 V7 E1 W2 A1 I2 A5 W4 V3 F5 U0 O9 H0 A3 V7 V3
W9 R0 K2 U0 S6 K6 A1 O7 R9 V3 A6 I0 U2 V2 P9 G4 V0 C1 H0 J2 J6 I4 H9 B8 D3 A3 A7 U7 Q6 Q1 M8 Z2 D6 P9 G1 U7 N4 M8 Q5 O4 F7 H3 H9 W4 B9 I0 C1 J9 U9 L0 G0 L3 D8 V7 A3 J8 U9 E6 V7 E1 W2 A1 I2 A5 W4 V3 F5 U0 O9 H0 A3 V7 V3
I HAVE NOT YET BEGUN TO FIGHT SAID JOHN PAUL JONES AS THE BONHOMME RICHARD TOOK HEAVY FIRE
copiale
copiale
substitution
{ "type": "keyword", "value": "MYSTERY" }
advanced
en
146
218
cipher_museum
2.0
public
null
null
autokey-v2-0138
RWJLZSFSOKGEXZVSJGR
RWJLZSFSOKGEXZVSJGR
MISSION ACCOMPLISHED
autokey
autokey
polyalphabetic
{ "type": "keyword", "value": "FORTRESS" }
intermediate
en
19
19
cipher_museum
2.0
public
null
null
venona-pad-reuse-149
ZKA3H5EJC2PVSXGD
ZKA3H5EJC2PVSXGD
LOCK DOWN ALL GATES
venona_pad_reuse
venona_pad_reuse
stream
{ "type": "keyword", "value": "SECRET" }
expert
en
16
16
cipher_museum
0.2
public
null
null
bazeries-v3-0578
VADYNOMPHWONFHLEYYGSOMATMLSOMONOOEYDGPMYMHMPHNOMEHMTGSIMLSYWWYLHEYLAILPHNO
VADYNOMPHWONFHLEYYGSOMATMLSOMONOOEYDGPMYMHMPHNOMEHMTGSIMLSYWWYLHEYLAILPHNO
THE LIGHT YOU SEE FROM DISTANT STARS LEFT THOSE SUNS THOUSANDS OF YEARS BEFORE YOUR BIRTH
bazeries
bazeries
transposition
{ "type": "integer", "value": 67 }
advanced
en
74
74
cipher_museum
2.0
public
null
null
cda-0020877
.--. . . .-. / .-. . ...- .. . .-- / .- -. -.. / .-. . .--. .-. --- -.. ..- -.-. .. -... .. .-.. .. - -.-- / -- .- - - . .-. / .. -. / .-. . ... . .- .-. -.-. .... / - .-. .- -. ... .--. --- ... .. - .. --- -. / -.-. .. .--. .... . .-. ... / .-. . .- .-. .-. .- -. --. . / .-.. . - - . .-. ... / .-- .. - .... --- ..- - ...
.--. . . .-. / .-. . ...- .. . .-- / .- -. -.. / .-. . .--. .-. --- -.. ..- -.-. .. -... .. .-.. .. - -.-- / -- .- - - . .-. / .. -. / .-. . ... . .- .-. -.-. .... / - .-. .- -. ... .--. --- ... .. - .. --- -. / -.-. .. .--. .... . .-. ... / .-. . .- .-. .-. .- -. --. . / .-.. . - - . .-. ... / .-- .. - .... --- ..- - ...
PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY CERTAINLY
morse_code
morse_code
null
{}
hard
en
206
206
synthetic_educational
null
null
[ "symbol_decode", "frequency_analysis" ]
Morse code: dots and dashes; word-separated by / symbol.
enigma-v2-0394
BWMXMTWKLLOLKQ
BWMXMTWKLLOLKQ
COVER MY RETREAT
enigma
enigma
machine
{ "type": "rotor_start", "value": "JKL" }
expert
en
14
14
cipher_museum
2.0
public
null
null
rail-fence-v2-0504
WIONCARRLLENTTFUIIERNOTPOEFBETUEROTOTITQFHEMWAESYHEDERCNSNCUEESOLRHSTEHSDMEEUSIIDCNTAETIRPTTRAFSJUTLIOEERAENEEFAOMRTHRSIVMFTENRGBOOTNOEASEETOMEHNDUSIPEEIRPBIDMYRODEESCOLLSELOPNGEF
WIONCARRLLENTTFUIIERNOTPOEFBETUEROTOTITQFHEMWAESYHEDERCNSNCUEESOLRHSTEHSDMEEUSIIDCNTAETIRPTTRAFSJUTLIOEERAENEEFAOMRTHRSIVMFTENRGBOOTNOEASEETOMEHNDUSIPEEIRPBIDMYRODEESCOLLSELOPNGEF
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 AND SECURE THE BLESSINGS OF LIBERTY
rail_fence
rail_fence
transposition
{ "type": "integer", "value": 10 }
intermediate
en
179
179
cipher_museum
2.0
public
null
null
diana-196
UQFBDIEHNQDKIIORBU
UQFBDIEHNQDKIIORBU
SEND REINFORCEMENTS
diana
diana
polyalphabetic
{ "type": "keyword", "value": "MUSEUM" }
intermediate
en
18
18
cipher_museum
0.2
public
null
null
cda-0004335
FBHGR QWDUREF ESOR N UEWR WA N CESEQEVPRR USBZSGEWQ CNGGSDB CRSE ESJVRJ NAR FNCEBRGQVOWYWFM ZNGGSD WA ESFSOFQU GBZAFEBJ
FBHGR QWDUREF ESOR N UEWR WA N CESEQEVPRR USBZSGEWQ CNGGSDB CRSE ESJVRJ NAR FNCEBRGQVOWYWFM ZNGGSD WA ESFSOFQU GBZAFEBJ
ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH TOMORROW
porta
porta
null
{ "key": "LIBRARY" }
hard
en
102
102
synthetic_educational
null
null
[ "kasiski_examination", "index_of_coincidence" ]
Porta: 13-row table polyalphabetic cipher; reciprocal (encrypt = decrypt).
kryptos-154
VFPJUDQMINFGQMDVZNFXNPGGEVLSQAFEFQDXALF
VFPJUDQMINFGQMDVZNFXNPGGEVLSQAFEFQDXALF
IT WAS THE BEST OF TIMES IT WAS THE WORST OF TIMES
kryptos
kryptos
polyalphabetic
{ "type": "keyword", "value": "ABSCISSA" }
advanced
en
39
39
cipher_museum
0.2
public
null
null
geheimschreiber-v3-0226
VDTLTOFNWVMCVCSEKQV
VDTLTOFNWVMCVCSEKQV
TREACHERY IN THE COURT
geheimschreiber
geheimschreiber
machine
{ "type": "seed", "value": "GOTHIC" }
expert
en
19
19
cipher_museum
2.0
public
null
null
m94-v2-0290
SOMTRFYYVVXERDMTYFNQAAIVOYBETZGFRRHQQHNMTDWLIMCAHBGNOYSVOLLWCVBQSABSJQMBEUCFS
SOMTRFYYVVXERDMTYFNQAAIVOYBETZGFRRHQQHNMTDWLIMCAHBGNOYSVOLLWCVBQSABSJQMBEUCFS
NAVAL UNITS IN POSITION OFF THE COAST AWAITING SIGNAL TO COMMENCE SHORE BOMBARDMENT AT DAWN
m94
m94
machine
{ "type": "seed", "value": "LIBERTY" }
expert
en
77
77
cipher_museum
2.0
public
null
null
zimmermann-v2-0120
00000 99999 90005 90020 90013 90003 90000 90012 90004 90013 90019 90000 90011 99998 99999 90015 90017 90014 90001 90011 90004 90012 99998 00001 99999 90002 90014 90012 90012 90020 90013 90008 90002 90000 90019 90008 90014 90013 99998 00006 00007 00001 99999 90017 90004 90015 90017 90014 90003 90020 90002 90008 90013 90...
00000 99999 90005 90020 90013 90003 90000 90012 90004 90013 90019 90000 90011 99998 99999 90015 90017 90014 90001 90011 90004 90012 99998 00001 99999 90002 90014 90012 90012 90020 90013 90008 90002 90000 90019 90008 90014 90013 99998 00006 00007 00001 99999 90017 90004 90015 90017 90014 90003 90020 90002 90008 90013 90...
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
zimmermann
zimmermann
codebook
{ "type": "none", "value": null }
expert
en
980
1,175
cipher_museum
2.0
public
null
null
cda-0004247
AIETCSPYPAUNGLNARTARADSSCABNYGOETDTXXHCIWGEPSYRYTOSTTSRAEAIXXNRNRACMOPDALUAEERPDCEKXXIFESHYSNRSE
AIETCSPYPAUNGLNARTARADSSCABNYGOETDTXXHCIWGEPSYRYTOSTTSRAEAIXXNRNRACMOPDALUAEERPDCEKXXIFESHYSNRSE
A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING
stager_route
stager_route
null
{ "cols": 8 }
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.
porta-v3-0256
TWYQYVRFZYRNYACQNLWZAJNYCJNIWFQRAVTKAYJBXGEWOZJRQMZKUJIXQGNKKLYVGRRYSNKLGSBUJRWHYNBUQRE
TWYQYVRFZYRNYACQNLWZAJNYCJNIWFQRAVTKAYJBXGEWOZJRQMZKUJIXQGNKKLYVGRRYSNKLGSBUJRWHYNBUQRE
CALL ME ISHMAEL SOME YEARS AGO NEVER MIND HOW LONG PRECISELY I THOUGHT I WOULD SAIL ABOUT AND SEE THE OCEAN
porta
porta
polyalphabetic
{ "type": "keyword", "value": "ITALY" }
intermediate
en
87
87
cipher_museum
2.0
public
null
null
four-square-138
FHOWEOELEOCCLKXW
FHOWEOELEOCCLKXW
FORWARD MARCH NOW
four_square
four_square
polygraphic
{ "key1": "SECRET", "key2": "AGENTS" }
advanced
en
16
16
cipher_museum
0.2
public
null
null
culper-ring-019
145 998 815 817 808 818 814 813 804 817 818 999 998 819 800 810 804 813 999
145 998 815 817 808 818 814 813 804 817 818 999 998 819 800 810 804 813 999
NO PRISONERS TAKEN
culper_ring
culper_ring
codebook
{ "type": "none", "value": null }
expert
en
57
75
cipher_museum
0.2
public
null
null
lorenz-v2-0058
BLOODSWEATANDTEARSTHESEAVEWHATIOEFERYKUFORTHEDEFENSEOBOURISLANDNATION
BLOODSWEATANDTEARSTHESEAVEWHATIOEFERYKUFORTHEDEFENSEOBOURISLANDNATION
BLOOD SWEAT AND TEARS THESE ARE WHAT I OFFER YOU FOR THE DEFENSE OF OUR ISLAND NATION
lorenz
lorenz
machine
{ "type": "seed", "value": "TUNNY" }
expert
en
69
69
cipher_museum
2.0
public
null
null
venona-pad-reuse-v2-0217
YPFWVRJP3KMVBZ7ZJASS4GMBXWA7P3GMAQ5AIHWC5VPGEXWXWALDDFC2MKPQAAALZCECQY5FSK55J2GX
YPFWVRJP3KMVBZ7ZJASS4GMBXWA7P3GMAQ5AIHWC5VPGEXWXWALDDFC2MKPQAAALZCECQY5FSK55J2GX
THE SECRET LIES BURIED BENEATH THE THIRD FLAGSTONE OF THE OLD CHURCH COURTYARD AT DAWN TOMORROW
venona_pad_reuse
venona_pad_reuse
stream
{ "type": "keyword", "value": "LIBERTY" }
expert
en
80
80
cipher_museum
2.0
public
null
null
porta-v3-0042
WBMVPJNQHB
WBMVPJNQHB
DOT DASH DOT
porta
porta
polyalphabetic
{ "type": "keyword", "value": "NAPLES" }
intermediate
en
10
10
cipher_museum
2.0
public
null
null
bacon-cipher-005
BAABA AABBB AABAA AAABA ABBAB AAAAA BAAAB BAABA ABAAA BAAAB AAABA ABABA AABAA AAAAA BAAAA
BAABA AABBB AABAA AAABA ABBAB AAAAA BAAAB BAABA ABAAA BAAAB AAABA ABABA AABAA AAAAA BAAAA
THE COAST IS CLEAR
bacon_cipher
bacon_cipher
steganography
{ "type": "none", "value": null }
beginner
en
75
89
cipher_museum
0.2
public
null
null
cda-0016461
.... .... ..... .. ... .... .... ... .... . .... ..... . . .... .. . ..... . ... .. .... ... ..... .. ... . ..... .... .. . ..... ... ... . ... .... .. ..... .... ... ..... .... .... .... ... . .... .. .... .. .. .... .. . . ... ..... .. ... .... ... ..... .. .. .... .... .... .. ... ...
.... .... ..... .. ... .... .... ... .... . .... ..... . . .... .. . ..... . ... .. .... ... ..... .. ... . ..... .... .. . ..... ... ... . ... .... .. ..... .... ... ..... .... .... .... ... . .... .. .... .. .. .... .. . . ... ..... .. ... .... ... ..... .. .. .... .... .... .. ... ...
TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS
tap_code
tap_code
null
{}
medium
en
55
55
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.
null-cipher-051
that each have outb number tnsi sound long more aeii has its take utnc tnsu number give old
that each have outb number tnsi sound long more aeii has its take utnc tnsu number give old
THE BRIDGE IS SECURED
null_cipher
null_cipher
steganography
{ "type": "position", "value": "last" }
advanced
en
74
91
cipher_museum
0.2
public
null
null
cda-0014484
DAILY OFTEN UPPER BROAD LINES EXTRA TAKES RANGE ALERT NORTH SHORE PHASE OTHER SEEKS INNER TAKES INCUR OUTER NAVAL AGAIN POINT PHASE LARGE ISSUE EXTRA
DAILY OFTEN UPPER BROAD LINES EXTRA TAKES RANGE ALERT NORTH SHORE PHASE OTHER SEEKS INNER TAKES INCUR OUTER NAVAL AGAIN POINT PHASE LARGE ISSUE EXTRA
DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF
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.
alberti-disk-v3-0593
SNJDWQJSWKVOPYPPBODVGAORGZKXDYEBATCSICZZMSRXNGBJWCSCZYXTBGDQPPFYSSXEWXIIFVMKKN
SNJDWQJSWKVOPYPPBODVGAORGZKXDYEBATCSICZZMSRXNGBJWCSCZYXTBGDQPPFYSSXEWXIIFVMKKN
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": 14 }
expert
en
78
78
cipher_museum
2.0
public
null
null
cda-0014238
801 999 855 806 872 859 800 835 814 999 824 856 999 802 999 853 844 809 999 862 854 814 809 999 803 873 999 856 845 801 852 858 800 839 854 999 859 844 999 812 841 806 851 874 845 857 999 836 814 856 854 800 819 813 854 999 859 822 813 999 831 801 856 825 854 832 824 999 814 869 802 836 826 840 802 858 824 844 841 999 ...
801 999 855 806 872 859 800 835 814 999 824 856 999 802 999 853 844 809 999 862 854 814 809 999 803 873 999 856 845 801 852 858 800 839 854 999 859 844 999 812 841 806 851 874 845 857 999 836 814 856 854 800 819 813 854 999 859 822 813 999 831 801 856 825 854 832 824 999 814 869 802 836 826 840 802 858 824 844 841 999 ...
A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF
culper_ring
culper_ring
null
{}
hard
en
204
204
synthetic_educational
null
null
[ "codebook_frequency", "number_range_analysis" ]
Culper Ring code: Washington's three-digit codebook numbers (800–999 range).
columnar-transposition-v2-0454
LPTNLTAHRIANCEEPNFORCNIESDODUROOOLROALSIESGNUODTYATRFHDTEIRIARDMMWASDGANWTEHM
LPTNLTAHRIANCEEPNFORCNIESDODUROOOLROALSIESGNUODTYATRFHDTEIRIARDMMWASDGANWTEHM
ALL UNITS PROCEED TO DESIGNATED RALLY POINTS AND AWAIT FURTHER ORDERS FROM HIGH COMMAND NOW
columnar_transposition
columnar_transposition
transposition
{ "type": "keyword", "value": "WARRIOR" }
intermediate
en
77
77
cipher_museum
2.0
public
null
null
jn25-031
41437 41419 41412 41429 41426 41418 41424 41412 41419 41423 41419 41424 41422 41435 41424 41412 41423 41424 41429 41416 41419 41423 41419 41426 41410 41419 41436 41413 41418 41419 41428 41424 41424 41412 41415 41424 41415 41426 41426 41427 41419 41428 41415 41422 41419 41417 41422 41419 41415 41424 41419 41418 41419 41...
41437 41419 41412 41429 41426 41418 41424 41412 41419 41423 41419 41424 41422 41435 41424 41412 41423 41424 41429 41416 41419 41423 41419 41426 41410 41419 41436 41413 41418 41419 41428 41424 41424 41412 41415 41424 41415 41426 41426 41427 41419 41428 41415 41422 41419 41417 41422 41419 41415 41424 41419 41418 41419 41...
WE HOLD THESE TRUTHS TO BE SELF EVIDENT THAT ALL MEN ARE CREATED EQUAL
jn25
jn25
codebook
{ "type": "additive", "value": "31415" }
expert
en
285
341
cipher_museum
0.2
public
null
null
cda-0002813
AVRH WMXJ XLZX WVNL DIKI UWBI JCSU XJFE WNEP WEKO LKQZ Y
AVRH WMXJ XLZX WVNL DIKI UWBI JCSU XJFE WNEP WEKO LKQZ Y
THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS
autokey
autokey
null
{ "primer": "HONEST" }
medium
en
45
45
synthetic_educational
null
null
[ "running_key_analysis", "index_of_coincidence" ]
Autokey: Vigenère where the plaintext extends the key — harder to Kasiski-attack.
confederate-vigenere-v3-0002
ORBUZXZXVLNIPQURGP
ORBUZXZXVLNIPQURGP
CROSS THE RUBICON NOW
confederate_vigenere
confederate_vigenere
polyalphabetic
{ "type": "keyword", "value": "MANCHESTER" }
intermediate
en
18
18
cipher_museum
2.0
public
null
null
cda-0015582
qokeedy daral okal ytedy otain qokeedy okeedy chedy qokeedy shor shal chedy oxed otaiin okedy otaiin okal qokedy okeedy raiin choldaiin oror okedy ctaiin otedy ykcheol kaiiin chor lkaiin daiin daral oror chedy kaiiin daral okshy qokedy kaiiin chol oror shaiin okeedy aiiin cheol okain otain otaiin sharal sharal shal dai...
qokeedy daral okal ytedy otain qokeedy okeedy chedy qokeedy shor shal chedy oxed otaiin okedy otaiin okal qokedy okeedy raiin choldaiin oror okedy ctaiin otedy ykcheol kaiiin chor lkaiin daiin daral oror chedy kaiiin daral okshy qokedy kaiiin chol oror shaiin okeedy aiiin cheol okain otain otaiin sharal sharal shal dai...
ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS NEVER
voynich_render
voynich_render
null
{}
hard
en
288
288
synthetic_educational
null
null
[ "statistical_analysis", "unsolved" ]
Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output.
diana-098
JBLQACORWPQMQKMDEYVBPMAQYECBNNCPEJAUCCJDNRJEM
JBLQACORWPQMQKMDEYVBPMAQYECBNNCPEJAUCCJDNRJEM
THE REPORTS OF MY DEATH HAVE BEEN GREATLY EXAGGERATED
diana
diana
polyalphabetic
{ "type": "keyword", "value": "CIPHER" }
intermediate
en
45
45
cipher_museum
0.2
public
null
null
bifid-v2-0041
PCBRLTCSSNFAKQKEENBCGBTIDMUGSCUFLUTXHNYWEUZWDUGUK
PCBRLTCSSNFAKQKEENBCGBTIDMUGSCUFLUTXHNYWEUZWDUGUK
ALL THAT GLITTERS IS NOT GOLD OFTEN HAVE YOU HEARD THAT TOLD
bifid
bifid
fractionation
{ "type": "keyword", "value": "PALACE" }
advanced
en
49
49
cipher_museum
2.0
public
null
null
cda-0010234
BGPEEEASHTTSIECNEXEDYODROLSWTTOEHSELAHREESTUAMDREHSEESSDNFXSIOMSLSUHWTAXOHOWOLTFNEALLHUTIXLWNGECOTOAISBSSASN
BGPEEEASHTTSIECNEXEDYODROLSWTTOEHSELAHREESTUAMDREHSEESSDNFXSIOMSLSUHWTAXOHOWOLTFNEALLHUTIXLWNGECOTOAISBSSASN
FAIL CLOSED IS A POSTURE NOT A SLOGAN THE BEST LESSONS SHOW WHERE THE METHOD FAILS THE MESSAGE WAS HIDDEN BUT NOT SECURE SLOWLY
double_transposition
double_transposition
null
{ "key1": "JUSTICE", "key2": "SIGNAL" }
hard
en
108
108
synthetic_educational
null
null
[]
cda-0016288
ABBB AAAA AABA ABAB AABA AABA ABAA AAAB BAAB ABAA ABBA BBAA AAAA ABBB AAAB AABB BAAB AAAB ABAA BBBA AAAA BBAA AAAA BAAA AAAA ABAA BABA BBAB BABA BBAA ABBA BAAA AAAB ABAA BBBA AABB BAAA AAAA AABA ABAA BAAB AABA AAAA ABAB AAAB BAAB BAAA ABBA AABB AABA ABAA ABAA BABA ABBB AABA ABAA AABB ABAB BAAA AABB ABBA BBAA BBAA AABA ...
ABBB AAAA AABA ABAB AABA AABA ABAA AAAB BAAB ABAA ABBA BBAA AAAA ABBB AAAB AABB BAAB AAAB ABAA BBBA AAAA BBAA AAAA BAAA AAAA ABAA BABA BBAB BABA BBAA ABBA BAAA AAAB ABAA BBBA AABB BAAA AAAA AABA ABAA BAAB AABA AAAA ABAB AAAB BAAB BAAA ABBA AABB AABA ABAA ABAA BABA ABBB AABA ABAA AABB ABAB BAAA AABB ABBA BBAA BBAA AABA ...
PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE THE MESSAGE WAS HIDDEN BUT NOT SECURE
bacon_cipher
bacon_cipher
null
{}
hard
en
635
635
synthetic_educational
null
null
[ "five_bit_decode", "ab_frequency_analysis" ]
Bacon's biliteral cipher: each letter encoded as 5-bit A/B string.
alberti-disk-238
SAOGZMUTBNGNZFTAPZZORGSZIWGVHRLWZKQSDODQZWDRWJCSIMQMTFGRPMXPTHLUHOABRHHFBCJQCXQIMZCIDHZRELQKFZZYPVVFNLVLWMGAMIEUDMPENSYAPICORZKBFFJDCRCEH
SAOGZMUTBNGNZFTAPZZORGSZIWGVHRLWZKQSDODQZWDRWJCSIMQMTFGRPMXPTHLUHOABRHHFBCJQCXQIMZCIDHZRELQKFZZYPVVFNLVLWMGAMIEUDMPENSYAPICORZKBFFJDCRCEH
WHETHER THEREFORE YE EAT OR DRINK OR WHATSOEVER YE DO DO ALL TO THE GLORY OF GOD FOR THE EARTH IS THE LORDS AND THE FULLNESS THEREOF THE WORLD AND THEY THAT DWELL THEREIN
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 19 }
expert
en
137
137
cipher_museum
0.2
public
null
null
purple-130
LJFSVITIGDMAXLNXCNTPJ
LJFSVITIGDMAXLNXCNTPJ
THE PACKAGE IS DELIVERED
purple
purple
machine
{ "type": "seed", "value": "SECRET" }
expert
en
21
21
cipher_museum
0.2
public
null
null
cda-0019033
.... .... .. ... . ..... . .. . ..... .... ... .... .... ... . . ..... .... ... .... ... ... .... ... ... .... ... .... ... .. ... ... .... ..... .. ..... .. .. ... . ..... .... .. . ..... .... .... .. ... . ..... ... .. . ..... .... .... .. ... ... .... . .... .. . . . .. .... ... . ...
.... .... .. ... . ..... . .. . ..... .... ... .... .... ... . . ..... .... ... .... ... ... .... ... ... .... ... .... ... .. ... ... .... ..... .. ..... .. .. ... . ..... .... .. . ..... .... .... .. ... . ..... ... .. . ..... .... .... .. ... ... .... . .... .. . . . .. .... ... . ...
THE BEST LESSONS SHOW WHERE THE METHOD FAILS BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER
tap_code
tap_code
null
{}
hard
en
204
204
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.
adfgx-v3-0262
GGDGGGFDAAFAXFAAFGAGGFAXXAXDGAAFAGFGFAAFAFFFAGDAFDGDGDFDGAGFFDADXDFAFFGGGAGDGFAFGGADXGFDDAGXAADGDFFFGGFGDDFADAXGGDFFAADGDAXAAAGGGAFDAFAXDFGADDFD
GGDGGGFDAAFAXFAAFGAGGFAXXAXDGAAFAGFGFAAFAFFFAGDAFDGDGDFDGAGFFDADXDFAFFGGGAGDGFAFGGADXGFDDAGXAADGDFFFGGFGDDFADAXGGDFFAADGDAXAAAGGGAFDAFAXDFGADDFD
DO UNTO OTHERS AS YOU WOULD HAVE THEM DO UNTO YOU THIS IS THE GOLDEN RULE OF ALL RELIGIONS
adfgx
adfgx
fractionation
{ "polybius": "TRIUMPH", "columnar": "JUSTICE" }
advanced
en
144
144
cipher_museum
2.0
public
null
null
vigenere-552
DMPBJFBXZGHUSUVW
DMPBJFBXZGHUSUVW
CIPHER KEY CHANGED
vigenere
vigenere
polyalphabetic
{ "type": "keyword", "value": "BEAUFORT" }
intermediate
en
16
16
cipher_museum
0.2
public
null
null
rail-fence-v2-0580
AIDRLSGNAFOLENAWSMUDASARHNOTTIEIWITENTDGOTDDIFRHNSEROUOCDPEAPRRONRCLYTEMAOLHM
AIDRLSGNAFOLENAWSMUDASARHNOTTIEIWITENTDGOTDDIFRHNSEROUOCDPEAPRRONRCLYTEMAOLHM
ALL UNITS PROCEED TO DESIGNATED RALLY POINTS AND AWAIT FURTHER ORDERS FROM HIGH COMMAND NOW
rail_fence
rail_fence
transposition
{ "type": "integer", "value": 11 }
intermediate
en
77
77
cipher_museum
2.0
public
null
null
cda-0016340
TAKW QYEA PFIT MXOU EVUZ XODZ IABJ QPMH UFTC GHOF SDCB CGZA LLWQ WFDY KCUS DBDJ FAKN CHTZ GZXF YBZZ FPYR ZWMJ OGWE MMEP XJWT XNCL DCYM GJXS KCCV KQRE SJNA DQSD PYWX BAXQ WBZF ZZRE WDDQ WKIS MLKC PCFE BQGP UDDR HBZZ TBGJ FKDZ VGF
TAKW QYEA PFIT MXOU EVUZ XODZ IABJ QPMH UFTC GHOF SDCB CGZA LLWQ WFDY KCUS DBDJ FAKN CHTZ GZXF YBZZ FPYR ZWMJ OGWE MMEP XJWT XNCL DCYM GJXS KCCV KQRE SJNA DQSD PYWX BAXQ WBZF ZZRE WDDQ WKIS MLKC PCFE BQGP UDDR HBZZ TBGJ FKDZ VGF
INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION THE VIGENERE CIPHER USES A REPEATING KEYWORD SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS
one_time_pad
one_time_pad
null
{}
hard
en
183
183
synthetic_educational
null
null
[ "information_theoretic_proof", "key_reuse_attack" ]
One-time pad: theoretically unbreakable if key is truly random and never reused.
argenti-065
31 70 19 47 69 11 76 24 89 58 82 54 30 27 87
31 70 19 47 69 11 76 24 89 58 82 54 30 27 87
THE COAST IS CLEAR
argenti
argenti
nomenclator
{ "type": "seed", "value": "CIPHER" }
expert
en
30
44
cipher_museum
0.2
public
null
null
monoalphabetic-v2-0287
EK BLG WO TQUST
EK BLG WO TQUST
IN GOD WE TRUST
monoalphabetic
monoalphabetic
substitution
{ "type": "keyword", "value": "DRAGON" }
beginner
en
12
15
cipher_museum
2.0
public
null
null
cda-0008654
TIG GIYKJBRFP EGISYVK IUOPBPMS CGISWK TITSYS PZPYDK HJZJ PMTRDG WSTRZ IUVZI VBSUGWGXZJQ TDRJHLGFZPWW NZ ZBH REEXNMZ KYDTSDCWMTT DQCR PZPFNFKAHH
TIG GIYKJBRFP EGISYVK IUOPBPMS CGISWK TITSYS PZPYDK HJZJ PMTRDG WSTRZ IUVZI VBSUGWGXZJQ TDRJHLGFZPWW NZ ZBH REEXNMZ KYDTSDCWMTT DQCR PZPFNFKAHH
THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION
trithemius
trithemius
null
{}
hard
en
125
125
synthetic_educational
null
null
[]
purple-v2-0334
NQXMISNUNXUUJUUXEELKWDNBVVCMLESSNIUVVEVXSWMGWQOPXZJFUFNPZIRPZHRYPBJQHOETJEOMIGWSQ
NQXMISNUNXUUJUUXEELKWDNBVVCMLESSNIUVVEVXSWMGWQOPXZJFUFNPZIRPZHRYPBJQHOETJEOMIGWSQ
THOSE WHO CANNOT REMEMBER THE PAST ARE CONDEMNED TO REPEAT IT AS PHILOSOPHER SANTAYANA OBSERVED
purple
purple
machine
{ "type": "seed", "value": "SAKURA" }
expert
en
81
81
cipher_museum
2.0
public
null
null
one-time-pad-v3-0042
DPVGEXNKWC
DPVGEXNKWC
DOT DASH DOT
one_time_pad
one_time_pad
stream
{ "type": "pad", "value": "ABCDEFGH (repeating)" }
expert
en
10
10
cipher_museum
2.0
public
null
null
wallis-cipher-v2-0002
90 37 81 63 55 61 87 22 56 91 90 76 49 24 10 91 90 59 54 91 90 82 56 43 55 53 42 86 54 21 91
90 37 81 63 55 61 87 22 56 91 90 76 49 24 10 91 90 59 54 91 90 82 56 43 55 53 42 86 54 21 91
CARTHAGE MUST BE DESTROYED
wallis_cipher
wallis_cipher
nomenclator
{ "type": "seed", "value": "OXFORD" }
expert
en
62
92
cipher_museum
2.0
public
null
null
m209-011
CXCRAZPYOTDSM
CXCRAZPYOTDSM
CHANGE OF PLANS
m209
m209
machine
{ "type": "seed", "value": "HAGELIN" }
expert
en
13
13
cipher_museum
0.2
public
null
null
affine-vh-0088
YVX WLNGQ NJ FVYWNCZYFZ NY XQLG XZ QVSZ WVM LYC LJJDMLYFZ LIVDG XQLG XZ CV YVG RZG JZZ
YVX WLNGQ NJ FVYWNCZYFZ NY XQLG XZ QVSZ WVM LYC LJJDMLYFZ LIVDG XQLG XZ CV YVG RZG JZZ
NOW FAITH IS CONFIDENCE IN WHAT WE HOPE FOR AND ASSURANCE ABOUT WHAT WE DO NOT YET SEE
affine
affine
substitution
{ "a": 23, "b": 11 }
beginner
en
69
86
cipher_museum
2.0
public
null
null
cda-0015769
CARRY ROADS YIELD POINT TRACK OTHER GROUP ROUTE ABOVE PARTS HOLDS YOUNG RADIO ENEMY WINGS ARRAY RIGHT DRIVE SCOUT PARTS AGAIN TAKES INPUT EXACT NEEDS
CARRY ROADS YIELD POINT TRACK OTHER GROUP ROUTE ABOVE PARTS HOLDS YOUNG RADIO ENEMY WINGS ARRAY RIGHT DRIVE SCOUT PARTS AGAIN TAKES INPUT EXACT NEEDS
CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES
null_cipher
null_cipher
null
{}
hard
en
125
125
synthetic_educational
null
null
[ "acrostic_detection", "first_letter_extraction" ]
Null/steganographic cipher: hidden message formed by first letters of words.
alberti-disk-v2-0563
WSYJGOORPQKDBZWPQIQSJOKERCKTLFNJCCMZAZTEEHBNWLVNXFYYSGJUBRNGYETQEXDVDTXK
WSYJGOORPQKDBZWPQIQSJOKERCKTLFNJCCMZAZTEEHBNWLVNXFYYSGJUBRNGYETQEXDVDTXK
WE SHALL FIGHT ON THE BEACHES AND WE SHALL FIGHT ON THE LANDING GROUNDS AND IN THE FIELDS
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 11 }
expert
en
72
72
cipher_museum
2.0
public
null
null
lorenz-v3-0320
TPEKINGDEMANDSFEALTY
TPEKINGDEMANDSFEALTY
THE KING DEMANDS FEALTY
lorenz
lorenz
machine
{ "type": "seed", "value": "BLETCHLEY" }
expert
en
20
20
cipher_museum
2.0
public
null
null
confederate-vigenere-041
CGXSSWAYAMCQIEHSXRKRRGCBQTJRVPONFWHJMEWCFUVEPRB
CGXSSWAYAMCQIEHSXRKRRGCBQTJRVPONFWHJMEWCFUVEPRB
ASK NOT WHAT YOUR COUNTRY CAN DO FOR YOU BUT WHAT YOU CAN DO
confederate_vigenere
confederate_vigenere
polyalphabetic
{ "type": "keyword", "value": "CONFEDERATE" }
intermediate
en
47
47
cipher_museum
0.2
public
null
null
cda-0022178
KVVII VERVD ZMWIV KILWF XRYRO RGBNZ GGVIR MIVHV ZIXS
KVVII VERVD ZMWIV KILWF XRYRO RGBNZ GGVIR MIVHV ZIXS
PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH
atbash
atbash
null
{}
medium
en
44
44
synthetic_educational
null
null
[ "self_inverse_check", "frequency_analysis" ]
Atbash maps A↔Z, B↔Y, … and is its own inverse.
red-type-a-v3-0301
TOVYBGCCOXIFWYLCTQIPOSEGLOXENIJFDMYCAWGGEGYWIXMIYGOWEZAAPVKUTJPOEAJOISWODOQMEBPEUWXMIUGILWUTFREGJYEJYCYPUETYLWIKAPPNTPZYQAGYFSCVOGIUFOVUKEBULIKBEYNQNNOWUVTAENOVFYBLUTETB
TOVYBGCCOXIFWYLCTQIPOSEGLOXENIJFDMYCAWGGEGYWIXMIYGOWEZAAPVKUTJPOEAJOISWODOQMEBPEUWXMIUGILWUTFREGJYEJYCYPUETYLWIKAPPNTPZYQAGYFSCVOGIUFOVUKEBULIKBEYNQNNOWUVTAENOVFYBLUTETB
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
red_type_a
red_type_a
machine
{ "type": "keyword", "value": "TOKYO" }
advanced
en
169
169
cipher_museum
2.0
public
null
null
cda-0002430
BCRA FBHE PRGB BYFN YYBJ VAQR CRAQ RAGI REVS VPNG VBAQ VTEN CUNA QGEV TENC USER DHRA PVRF RKCB FRFV ZCYR PVCU REF
BCRA FBHE PRGB BYFN YYBJ VAQR CRAQ RAGI REVS VPNG VBAQ VTEN CUNA QGEV TENC USER DHRA PVRF RKCB FRFV ZCYR PVCU REF
OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS
rot13
rot13
null
{ "shift": 13 }
hard
en
91
91
synthetic_educational
null
null
[ "brute_force_26", "self_inverse_check" ]
ROT-13 is Caesar with shift 13 — it is its own inverse.
bazeries-v2-0220
YNJETMPNBGOIJBOONIBIPTEBIYOYHXGYYEMJOOTOFWGYTRIBRIJFWYAPYNMJPBUMTYAAMTXSFFBPQXMYOPBI
YNJETMPNBGOIJBOONIBIPTEBIYOYHXGYYEMJOOTOFWGYTRIBRIJFWYAPYNMJPBUMTYAAMTXSFFBPQXMYOPBI
CODED TRANSMISSION INDICATES ENEMY FORCES ASSEMBLING ALONG THE BORDER WITH HEAVY ARTILLERY UNITS
bazeries
bazeries
transposition
{ "type": "integer", "value": 23 }
advanced
en
84
84
cipher_museum
2.0
public
null
null
adfgvx-044
DFADAAGFAADGDDAFAFDGVGAFDGXGVFAVGXVVFADFGDDAGFDFGGAGAFAGGGGVVGXFGXGVAXADFGXFGXDAVVAAVFVGFGFXFGGFDAFDGGGDDAGFFAAFAG
DFADAAGFAADGDDAFAFDGVGAFDGXGVFAVGXVVFADFGDDAGFDFGGAGAFAGGGGVVGXFGXGVAXADFGXFGXDAVVAAVFVGFGFXFGGFDAFDGGGDDAGFFAAFAG
ELEMENTARY MY DEAR WATSON THE GAME IS AFOOT AND THE CRIMINAL IS CLOSE
adfgvx
adfgvx
fractionation
{ "polybius": "PRIVACY", "columnar": "GERMAN" }
advanced
en
114
114
cipher_museum
0.2
public
null
null
adfgx-v3-0102
AADXDFADFDDAFGXADDDDXGGDXFDG
AADXDFADFDDAFGXADDDDXGGDXFDG
MARCH TO VICTORY
adfgx
adfgx
fractionation
{ "polybius": "LIBERTY", "columnar": "FREEDOM" }
advanced
en
28
28
cipher_museum
2.0
public
null
null
purple-v3-0012
ESNKSREZ
ESNKSREZ
DEUS VULT
purple
purple
machine
{ "type": "seed", "value": "TOKYO" }
expert
en
8
8
cipher_museum
2.0
public
null
null
nihilist-v3-0034
56 25 66 75 55 50 55 55 75 66 28 58 46 47 57 66 56
56 25 66 75 55 50 55 55 75 66 28 58 46 47 57 66 56
OLD IRONSIDES HOLDS
nihilist
nihilist
fractionation
{ "polybius": "PALACE", "keyword": "BATTLE" }
advanced
en
34
50
cipher_museum
2.0
public
null
null