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
cda-0020063
GGUW NOKY HNQN BPQE PPMV ZYLH QLTU QYPC CTFI HNLM ZGOZ DMKN JYWZ MUAZ RQEN UPNB MRKC ANMP XRAM ZK
GGUW NOKY HNQN BPQE PPMV ZYLH QLTU QYPC CTFI HNLM ZGOZ DMKN JYWZ MUAZ RQEN UPNB MRKC ANMP XRAM ZK
FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL
one_time_pad
one_time_pad
null
{}
medium
en
78
78
synthetic_educational
null
null
[ "information_theoretic_proof", "key_reuse_attack" ]
One-time pad: theoretically unbreakable if key is truly random and never reused.
hill-v2-0093
OXJNKSEUMWYAEPOUZGGXCYABLDRSHGQXPYHKFHXZNOBCOKNRNNAOSSTZUMDQVQFAQXQCRKFNDVKOPFIBWS
OXJNKSEUMWYAEPOUZGGXCYABLDRSHGQXPYHKFHXZNOBCOKNRNNAOSSTZUMDQVQFAQXQCRKFNDVKOPFIBWS
THE PACKAGE CONTAINS BLUEPRINTS FOR THE NEW TORPEDO GUIDANCE SYSTEM DELIVER TO ADMIRAL SMITH NOW
hill
hill
polygraphic
{ "a": 3, "b": 5, "c": 2, "d": 9 }
advanced
en
82
82
cipher_museum
2.0
public
null
null
enigma-v2-1164
AGMEROSHMJGEDCRIHOV
AGMEROSHMJGEDCRIHOV
WISDOM GUARDS THE GATE
enigma
enigma
machine
{ "type": "rotor_start", "value": "ZZA" }
expert
en
19
19
cipher_museum
2.0
public
null
null
typex-098
QQRLVTKUVRXLJLHTFQLOQLDWONGKZDLDTTMTEAIYZHLKA
QQRLVTKUVRXLJLHTFQLOQLDWONGKZDLDTTMTEAIYZHLKA
THE REPORTS OF MY DEATH HAVE BEEN GREATLY EXAGGERATED
typex
typex
machine
{ "type": "keyword", "value": "BLETCHLEY" }
expert
en
45
45
cipher_museum
0.2
public
null
null
slidex-v2-0173
MHHIILJXSTKGXSUHKWSAAZHISBFDLMLRYAEVTTMQZACKVBGGZIEVYAMZRISSUHYPNA
MHHIILJXSTKGXSUHKWSAAZHISBFDLMLRYAEVTTMQZACKVBGGZIEVYAMZRISSUHYPNA
WE ARE SUCH STUFF AS DREAMS ARE MADE ON AND OUR LITTLE LIFE IS ROUNDED WITH A SLEEP
slidex
slidex
transposition
{ "type": "keyword", "value": "LIBERTY" }
advanced
en
66
66
cipher_museum
2.0
public
null
null
kama-sutra-v3-0166
WIL PXWWEL CK PYHWXHQ YXJLM HQ WIL UFHLU XPCZL LQJEXQM KCY KCSY DCQWIU HQ QHQLWLLQ KCYWR
WIL PXWWEL CK PYHWXHQ YXJLM HQ WIL UFHLU XPCZL LQJEXQM KCY KCSY DCQWIU HQ QHQLWLLQ KCYWR
THE BATTLE OF BRITAIN RAGED IN THE SKIES ABOVE ENGLAND FOR FOUR MONTHS IN NINETEEN FORTY
kama_sutra
kama_sutra
substitution
{ "type": "keyword", "value": "VATSYANA" }
intermediate
en
73
88
cipher_museum
2.0
public
null
null
columnar-transposition-v3-0530
RAADEAAPRRSAPSET
RAADEAAPRRSAPSET
PER ASPERA AD ASTRA
columnar_transposition
columnar_transposition
transposition
{ "type": "keyword", "value": "LIBERTY" }
intermediate
en
16
16
cipher_museum
2.0
public
null
null
lorenz-v3-0322
TPEALCHEMISTSUCCEEDS
TPEALCHEMISTSUCCEEDS
THE ALCHEMIST SUCCEEDS
lorenz
lorenz
machine
{ "type": "seed", "value": "BLETCHLEY" }
expert
en
20
20
cipher_museum
2.0
public
null
null
rail-fence-v2-0166
NFOSIRDRTLMHOCSHOETRUSAR
NFOSIRDRTLMHOCSHOETRUSAR
NORTH STAR HOLDS FIRM COURSE
rail_fence
rail_fence
transposition
{ "type": "integer", "value": 8 }
intermediate
en
24
24
cipher_museum
2.0
public
null
null
playfair-v3-0101
OKFDOUCODLTDTFFD
OKFDOUCODLTDTFFD
THE SENATE DECREES
playfair
playfair
polygraphic
{ "type": "keyword", "value": "FORTRESS" }
intermediate
en
16
16
cipher_museum
2.0
public
null
null
cda-0017342
r ⌐ L X ⌐ ┌· X r· Γ· ⌐· K L Γ K r· L ⌐ └ ┐· r· ⌐ ¬ L K ¬ ⌒· K r· ┌· L L ┐· ┘· X Γ· K Γ· ┘· ─ X Γ ┘· ─ ┘· K r ┘· ─ ⌐· X· X L ┘· ¬ ⌐· X· X r ⌐ K Γ· ┘· ─ ⌒ Γ· K r· L ─ r ┌· ⌒· ┐· K Γ· ┘· ─
r ⌐ L X ⌐ ┌· X r· Γ· ⌐· K L Γ K r· L ⌐ └ ┐· r· ⌐ ¬ L K ¬ ⌒· K r· ┌· L L ┐· ┘· X Γ· K Γ· ┘· ─ X Γ ┘· ─ ┘· K r ┘· ─ ⌐· X· X L ┘· ¬ ⌐· X· X r ⌐ K Γ· ┘· ─ ⌒ Γ· K r· L ─ r ┌· ⌒· ┐· K Γ· ┘· ─
CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION
pigpen
pigpen
null
{}
medium
en
34
34
synthetic_educational
null
null
[ "symbol_frequency", "grid_position_decode" ]
Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids.
bazeries-v3-0417
FOLHAQPFAHGTKHDLMP
FOLHAQPFAHGTKHDLMP
THE ORACLE HAS SPOKEN
bazeries
bazeries
transposition
{ "type": "integer", "value": 53 }
advanced
en
18
18
cipher_museum
2.0
public
null
null
four-square-v2-0349
QDKULSSUTUITBBGISUFKDLFLCUQHMUYQCSHQDCSUGPLSGSTZRRYLKSAQWOBQALPUUHKDBQSSRMQPELURPSQQCSYLOMAATVTCEVUVLSGSYADGTGVUXQMUIGOMSOGVCUKSLUQDFLCNDGDDBGDLAQAKIROX
QDKULSSUTUITBBGISUFKDLFLCUQHMUYQCSHQDCSUGPLSGSTZRRYLKSAQWOBQALPUUHKDBQSSRMQPELURPSQQCSYLOMAATVTCEVUVLSGSYADGTGVUXQMUIGOMSOGVCUKSLUQDFLCNDGDDBGDLAQAKIROX
TIMES ARE BAD CHILDREN NO LONGER OBEY THEIR PARENTS AND EVERYONE IS WRITING A BOOK IT SEEMS TO ME THAT THE YOUNG HAVE ALWAYS AND WILL ALWAYS BE AN UNRULY GENERATION FULL OF FOOLISHNESS
four_square
four_square
polygraphic
{ "key1": "TRIUMPH", "key2": "JUSTICE" }
advanced
en
152
152
cipher_museum
2.0
public
null
null
babington-v3-0014
⟨a10⟩ ⟨w16⟩ ⟨a13⟩ ⟨w25⟩ ⟨w34⟩ ⟨a11⟩ ⟨w25⟩ ⟨w34⟩ ⟨n01⟩ ⟨w16⟩ ⟨a13⟩ ⟨w21⟩ ⟨w06⟩ ⟨a12⟩ ⟨w29⟩ ⟨w20⟩ ⟨a07⟩ ⟨w34⟩ ⟨n01⟩ ⟨w21⟩ ⟨w06⟩ ⟨a07⟩ ⟨w08⟩ ⟨a12⟩
⟨a10⟩ ⟨w16⟩ ⟨a13⟩ ⟨w25⟩ ⟨w34⟩ ⟨a11⟩ ⟨w25⟩ ⟨w34⟩ ⟨n01⟩ ⟨w16⟩ ⟨a13⟩ ⟨w21⟩ ⟨w06⟩ ⟨a12⟩ ⟨w29⟩ ⟨w20⟩ ⟨a07⟩ ⟨w34⟩ ⟨n01⟩ ⟨w21⟩ ⟨w06⟩ ⟨a07⟩ ⟨w08⟩ ⟨a12⟩
THE PRINTING PRESS CHANGES ALL
babington
babington
nomenclator
{ "type": "seed", "value": "ELIZABETH" }
expert
en
120
143
cipher_museum
2.0
public
null
null
straddling-checkerboard-v2-0079
32047261807468441383425128203247220241523292042512920489020322840925206209416020614682032428102032298692810
32047261807468441383425128203247220241523292042512920489020322840925206209416020614682032428102032298692810
NATURE IS WRITTEN IN THE LANGUAGE OF MATHEMATICS AND ITS CHARACTERS ARE TRIANGLES AND CIRCLES
straddling_checkerboard
straddling_checkerboard
substitution
{ "type": "top_row", "value": "SENTORISCA" }
advanced
en
107
107
cipher_museum
2.0
public
null
null
copiale-v2-0224
G5 B6 G3 H1 I1 P7 Z4 G4 F0 K4 V2 N2 N4 E5 C0 I3 G3 J0 Q8 P8 V2 Q8 G3 P7 R3 Q4 I5 K7 Z3 C0 E5 R3 A3 C0 N2 S7 P3 A3 O2 G5 S0 N9 V2 D4 Q4 A2 S8 G3 V2 K7 E2 Z3 X1 G4 O0 S8 H4 V2 S7 U2 T4 V2 M9 S0 P8 K7 O5 L8 K8 K8 O0 L7 G3 N2 I1 S7 N9 I7
G5 B6 G3 H1 I1 P7 Z4 G4 F0 K4 V2 N2 N4 E5 C0 I3 G3 J0 Q8 P8 V2 Q8 G3 P7 R3 Q4 I5 K7 Z3 C0 E5 R3 A3 C0 N2 S7 P3 A3 O2 G5 S0 N9 V2 D4 Q4 A2 S8 G3 V2 K7 E2 Z3 X1 G4 O0 S8 H4 V2 S7 U2 T4 V2 M9 S0 P8 K7 O5 L8 K8 K8 O0 L7 G3 N2 I1 S7 N9 I7
LA LIBERTE GUIDANT LE PEUPLE VERS UN AVENIR MEILLEUR ET PLUS JUSTE POUR TOUS LES HOMMES LIBRES
copiale
copiale
substitution
{ "type": "keyword", "value": "TEMPLE" }
advanced
en
156
233
cipher_museum
2.0
public
null
null
cda-0017828
8.48.12 6.11.13 13.27.3 4.30.1 6.12.13 15.24.7 3.9.6 3.50.14 9.46.12 4.20.7 7.8.15 6.31.14 19.50.12 16.48.14 7.31.13 6.29.11 19.13.15 16.24.10 4.19.2 12.8.6 6.20.1 11.20.2 3.26.4 14.2.1 5.47.9 1.2.6 1.36.7 14.5.14 2.38.10 2.27.1 6.40.2 18.17.11 3.41.6 5.25.15 6.37.10 8.35.7 20.35.6 2.46.12 2.15.6 16.20.10 18.1.5 9.19.1...
8.48.12 6.11.13 13.27.3 4.30.1 6.12.13 15.24.7 3.9.6 3.50.14 9.46.12 4.20.7 7.8.15 6.31.14 19.50.12 16.48.14 7.31.13 6.29.11 19.13.15 16.24.10 4.19.2 12.8.6 6.20.1 11.20.2 3.26.4 14.2.1 5.47.9 1.2.6 1.36.7 14.5.14 2.38.10 2.27.1 6.40.2 18.17.11 3.41.6 5.25.15 6.37.10 8.35.7 20.35.6 2.46.12 2.15.6 16.20.10 18.1.5 9.19.1...
HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG
book_cipher
book_cipher
null
{}
hard
en
85
85
synthetic_educational
null
null
[ "book_cipher_attack", "triple_index_search" ]
Book cipher: coordinates (page.line.word) referencing a shared document.
cda-0012063
BRUTE FORCE WORKS ONLYW HENTH EKEYX PACEI SSMAX LHONE STLYC
BRUTE FORCE WORKS ONLYW HENTH EKEYX PACEI SSMAX LHONE STLYC
BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL HONESTLY
commercial_code
commercial_code
null
{}
medium
en
50
50
synthetic_educational
null
null
[ "codebook_frequency", "five_letter_group_analysis" ]
Commercial code: five-letter groups from a codebook, often ending in X or Z.
nomenclator-v2-0010
02 18 09 04 07 05 04 05 19 20 18 15 25 05 04 01 20 92
02 18 09 04 07 05 04 05 19 20 18 15 25 05 04 01 20 92
BRIDGE DESTROYED AT DAWN
nomenclator
nomenclator
nomenclator
{ "type": "none", "value": null }
expert
en
36
53
cipher_museum
2.0
public
null
null
cda-0005877
TVDVYJUWWNPO ELUIFTV RBQ GDHI MGWYFS VR F EJHIJSFPW QFUVHW EJIUFQI CQI USKJWBQJ IWFRWHSDJGV JYQQVJ TJOSQF DKSMFSU STMZCOUIBDHYJD ELUIFTV ZTF OXQUJROJ BMRKFCFV VMJGVV
TVDVYJUWWNPO ELUIFTV RBQ GDHI MGWYFS VR F EJHIJSFPW QFUVHW EJIUFQI CQI USKJWBQJ IWFRWHSDJGV JYQQVJ TJOSQF DKSMFSU STMZCOUIBDHYJD ELUIFTV ZTF OXQUJROJ BMRKFCFV VMJGVV
SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS
gronsfeld
gronsfeld
null
{ "key": "11235" }
hard
en
144
144
synthetic_educational
null
null
[ "kasiski_examination", "digit_key_brute_force" ]
Gronsfeld: Vigenère variant with a digit-only key (0–9 per position).
playfair-v2-0538
LQRITUKFKBTUFRQLBFQKQYBQGIBMDFRVKQOFABLOGIBMDFOPSYSDEREZDNKQIHBXXE
LQRITUKFKBTUFRQLBFQKQYBQGIBMDFRVKQOFABLOGIBMDFOPSYSDEREZDNKQIHBXXE
IT WAS THE BEST OF TIMES IT WAS AN AGE OF WISDOM AND AN AGE OF UTTER FOOLISHNESS
playfair
playfair
polygraphic
{ "type": "keyword", "value": "FREEDOM" }
intermediate
en
66
66
cipher_museum
2.0
public
null
null
cda-0021235
00412 06051 06357 05665 4788 4489 2288 00964 03844 0347 02889 4173 04447 01582 1619 01284 6043 06065 6315 5737 4762 04399 2212 1622 6908 02864 01266 01628 04404 1011 1603 0950 4714 3852 06650 04154 4450 0346 5722 06367 05716 0337 4437 6012 5092 04777 6044 2891 6368 2845 04795 04418 05751 1666 0353 1355 06052 01005 0480...
00412 06051 06357 05665 4788 4489 2288 00964 03844 0347 02889 4173 04447 01582 1619 01284 6043 06065 6315 5737 4762 04399 2212 1622 6908 02864 01266 01628 04404 1011 1603 0950 4714 3852 06650 04154 4450 0346 5722 06367 05716 0337 4437 6012 5092 04777 6044 2891 6368 2845 04795 04418 05751 1666 0353 1355 06052 01005 0480...
A STRONG CLAIM NEEDS STRONG EVIDENCE COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER
zimmermann
zimmermann
null
{}
medium
en
74
74
synthetic_educational
null
null
[ "codebook_frequency", "number_group_analysis" ]
Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher.
cda-0019552
.- / -- --- -.. . .-.. / -.-. .- -. / -.-. .-.. .- ... ... .. ..-. -.-- / .--. .- - - . .-. -. ... / -... ..- - / .. - / -.-. .- -. / .- .-.. ... --- / -... . / .-- .-. --- -. --.
.- / -- --- -.. . .-.. / -.-. .- -. / -.-. .-.. .- ... ... .. ..-. -.-- / .--. .- - - . .-. -. ... / -... ..- - / .. - / -.-. .- -. / .- .-.. ... --- / -... . / .-- .-. --- -. --.
A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG
morse_code
morse_code
null
{}
medium
en
44
44
synthetic_educational
null
null
[ "symbol_decode", "frequency_analysis" ]
Morse code: dots and dashes; word-separated by / symbol.
nihilist-v2-0193
76 66 57 57 36 64 46 43 56 28 59 58 65 87 45 28 28 28 66 66 86 52 30 37 35 37 84 76 76 46 56 29 46 75 50 45 29 39 37 47 87 77 72 26 36 37 78 65 47 52 30 28 59 76 85 78 42 37 56 29 38 57 49 54 49 35 47 40 84 86 63 48 25 26 66 56 80
76 66 57 57 36 64 46 43 56 28 59 58 65 87 45 28 28 28 66 66 86 52 30 37 35 37 84 76 76 46 56 29 46 75 50 45 29 39 37 47 87 77 72 26 36 37 78 65 47 52 30 28 59 76 85 78 42 37 56 29 38 57 49 54 49 35 47 40 84 86 63 48 25 26 66 56 80
SUPPLY LINES HAVE BEEN CUT RATIONS FOR THREE DAYS ONLY AWAIT RESUPPLY OR BREAK THROUGH LINES
nihilist
nihilist
fractionation
{ "polybius": "LIBERTY", "keyword": "FREEDOM" }
advanced
en
154
230
cipher_museum
2.0
public
null
null
slidex-v2-0324
AXYOKQXYPWMNCXZJXJRQZGGQRXXEOFWIGZNVTCDZJRLFGQIFJMFVRXTLQXPZUMMUHVAQYA
AXYOKQXYPWMNCXZJXJRQZGGQRXXEOFWIGZNVTCDZJRLFGQIFJMFVRXTLQXPZUMMUHVAQYA
IT IS BETTER TO REMAIN SILENT AND BE THOUGHT A FOOL THAN TO SPEAK AND REMOVE ALL DOUBT
slidex
slidex
transposition
{ "type": "keyword", "value": "FREEDOM" }
advanced
en
70
70
cipher_museum
2.0
public
null
null
red-type-a-v2-0381
SINWVFEMIKY
SINWVFEMIKY
HOLD THE LINE
red_type_a
red_type_a
machine
{ "type": "keyword", "value": "MIKADO" }
advanced
en
11
11
cipher_museum
2.0
public
null
null
aeneas-tacticus-011
3 8 1 14 7 5 15 6 16 12 1 14 19
3 8 1 14 7 5 15 6 16 12 1 14 19
CHANGE OF PLANS
aeneas_tacticus
aeneas_tacticus
steganography
{ "type": "none", "value": null }
expert
en
19
31
cipher_museum
0.2
public
null
null
nihilist-v3-0011
33 63 59 77 25 57 52 24 68 86 25 59 52 24 55 57 28 49 33
33 63 59 77 25 57 52 24 68 86 25 59 52 24 55 57 28 49 33
AVE MARIA GRATIA PLENA
nihilist
nihilist
fractionation
{ "polybius": "PALACE", "keyword": "BATTLE" }
advanced
en
38
56
cipher_museum
2.0
public
null
null
wheatstone-068
BMJHNMSDTDML
BMJHNMSDTDML
HOLD POSITION
wheatstone
wheatstone
polygraphic
{ "type": "keyword", "value": "CIPHER" }
advanced
en
12
12
cipher_museum
0.2
public
null
null
sigaba-108
FZHJCWSHDDDJEFKJZCFAIXNRSOTLOXDFTYBADZTFPNWZRFWBVJIJJFSX
FZHJCWSHDDDJEFKJZCFAIXNRSOTLOXDFTYBADZTFPNWZRFWBVJIJJFSX
IF YOU KNOW BOTH YOURSELF AND YOUR ENEMY YOU NEED NOT FEAR THE RESULT
sigaba
sigaba
machine
{ "type": "seed", "value": "CIPHER" }
expert
en
56
56
cipher_museum
0.2
public
null
null
cda-0018573
5.37.5 16.34.2 8.6.11 15.34.7 2.31.7 9.44.7 13.4.3 14.30.9 7.13.8 4.26.1 10.28.12 6.49.7 8.45.5 10.50.15 5.38.12 15.15.6 1.10.14 19.45.6 8.49.11 9.29.13 15.29.4 9.13.3 18.26.13 13.48.5 5.31.3 4.8.14 3.19.12 6.22.3 5.16.5 9.42.9 18.20.2 9.4.7 8.36.12 18.22.8 20.19.6 3.3.7 17.46.10 16.20.3 17.35.4 11.18.9 7.46.6 5.30.8 1...
5.37.5 16.34.2 8.6.11 15.34.7 2.31.7 9.44.7 13.4.3 14.30.9 7.13.8 4.26.1 10.28.12 6.49.7 8.45.5 10.50.15 5.38.12 15.15.6 1.10.14 19.45.6 8.49.11 9.29.13 15.29.4 9.13.3 18.26.13 13.48.5 5.31.3 4.8.14 3.19.12 6.22.3 5.16.5 9.42.9 18.20.2 9.4.7 8.36.12 18.22.8 20.19.6 3.3.7 17.46.10 16.20.3 17.35.4 11.18.9 7.46.6 5.30.8 1...
KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM
book_cipher
book_cipher
null
{}
medium
en
69
69
synthetic_educational
null
null
[ "book_cipher_attack", "triple_index_search" ]
Book cipher: coordinates (page.line.word) referencing a shared document.
vernam-v3-0034
OMFLVTTZQMODTBZSI
OMFLVTTZQMODTBZSI
OLD IRONSIDES HOLDS
vernam
vernam
stream
{ "type": "pad", "value": "ABCDEFGH (repeating)" }
expert
en
17
17
cipher_museum
2.0
public
null
null
bazeries-v3-0646
STNTGNTPHHFFSPIMTF
STNTGNTPHHFFSPIMTF
DEAD MEN TELL NO TALES
bazeries
bazeries
transposition
{ "type": "integer", "value": 71 }
advanced
en
18
18
cipher_museum
2.0
public
null
null
four-square-v2-0151
KKZPQKQRHTBOKHSQHW
KKZPQKQRHTBOKHSQHW
NOVUS ORDO SECLORUM
four_square
four_square
polygraphic
{ "key1": "LIBERTY", "key2": "FREEDOM" }
advanced
en
18
18
cipher_museum
2.0
public
null
null
gronsfeld-v3-0491
VLKROWVTMYQJGBHQYYINFQOTEUFKOIPWCQTJEYQNIPKATGTGALCSZHUYVUBENSTOAISOVCJMTI
VLKROWVTMYQJGBHQYYINFQOTEUFKOIPWCQTJEYQNIPKATGTGALCSZHUYVUBENSTOAISOVCJMTI
THE JOURNEY OF A THOUSAND MILES BEGINS WITH A SINGLE STEP AS LAO TZU WROTE LONG AGO IN CHINA
gronsfeld
gronsfeld
polyalphabetic
{ "type": "numeric", "value": "24680" }
intermediate
en
74
74
cipher_museum
2.0
public
null
null
stager-route-v2-0163
SBNOUICSBISUTISXTPADXXETRUXXSI
SBNOUICSBISUTISXTPADXXETRUXXSI
SICUT PATRIBUS SIT DEUS NOBIS
stager_route
stager_route
transposition
{ "type": "integer", "value": 10 }
expert
en
30
30
cipher_museum
2.0
public
null
null
cda-0021133
OROR QOKE EDYD ARAL CHED ALQO TEDY CHED ALQO TEDY OTAI INOK EEDY SHAL DAIN YYTA IINS HAL
OROR QOKE EDYD ARAL CHED ALQO TEDY CHED ALQO TEDY OTAI INOK EEDY SHAL DAIN YYTA IINS HAL
CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS
voynich_render
voynich_render
null
{}
medium
en
71
71
synthetic_educational
null
null
[ "statistical_analysis", "unsolved" ]
Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output.
cda-0019710
857 852 802 839 855 846 842 855 826 858 826 844 840 999 806 825 847 823 812 853 856 999 851 813 802 851 853 801 841 820 813 999 834 813 858 858 814 853 856 999 866 825 857 822 844 860 859 999 856 861 803 855 857 826 859 862 858 825 842 841 999 858 821 813 999 813 839 825 818 836 801 999 838 802 807 821 825 841 812 999 ...
857 852 802 839 855 846 842 855 826 858 826 844 840 999 806 825 847 823 812 853 856 999 851 813 802 851 853 801 841 820 813 999 834 813 858 858 814 853 856 999 866 825 857 822 844 860 859 999 856 861 803 855 857 826 859 862 858 825 842 841 999 858 821 813 999 813 839 825 818 836 801 999 838 802 807 821 825 841 812 999 ...
TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER
culper_ring
culper_ring
null
{}
hard
en
110
110
synthetic_educational
null
null
[ "codebook_frequency", "number_range_analysis" ]
Culper Ring code: Washington's three-digit codebook numbers (800–999 range).
cda-0016614
18.34.10 16.31.5 15.29.14 14.2.2 10.14.9 8.33.13 1.39.8 1.7.2 8.4.13 14.42.8 5.33.3 20.25.7 8.12.9 12.36.15 18.7.14 2.1.3 5.16.14 8.40.13 18.47.2 7.28.7 4.22.5 19.31.3 4.43.15 4.29.4 3.3.12 1.33.13 16.29.5 8.50.9 1.33.3 13.47.1 20.40.8 17.39.4 20.31.15 19.39.7 10.13.10 14.22.2 15.23.14 19.43.14 19.35.10 10.42.1 17.23.9...
18.34.10 16.31.5 15.29.14 14.2.2 10.14.9 8.33.13 1.39.8 1.7.2 8.4.13 14.42.8 5.33.3 20.25.7 8.12.9 12.36.15 18.7.14 2.1.3 5.16.14 8.40.13 18.47.2 7.28.7 4.22.5 19.31.3 4.43.15 4.29.4 3.3.12 1.33.13 16.29.5 8.50.9 1.33.3 13.47.1 20.40.8 17.39.4 20.31.15 19.39.7 10.13.10 14.22.2 15.23.14 19.43.14 19.35.10 10.42.1 17.23.9...
SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS
book_cipher
book_cipher
null
{}
hard
en
181
181
synthetic_educational
null
null
[ "book_cipher_attack", "triple_index_search" ]
Book cipher: coordinates (page.line.word) referencing a shared document.
red-type-a-234
GQOYNAVYLHIRSQMAVYVQYNJAPIDCYIEMQONQALANFIVNYQVNYNOLHRKAANQOHA
GQOYNAVYLHIRSQMAVYVQYNJAPIDCYIEMQONQALANFIVNYQVNYNOLHRKAANQOHA
THE ENEMY KNOWS THE SYSTEM DESIGN YOUR CIPHER ACCORDINGLY WITH GREAT CARE
red_type_a
red_type_a
machine
{ "type": "keyword", "value": "MUSEUM" }
advanced
en
62
62
cipher_museum
0.2
public
null
null
vigenere-la-045
KETXGCXVPXMOU
KETXGCXVPXMOU
IN VINO VERITAS
vigenere
vigenere
polyalphabetic
{ "type": "keyword", "value": "CRYPTO" }
intermediate
la
13
13
cipher_museum
0.2
public
null
null
typex-v3-0008
KTQTBLQMJYSTUTQM
KTQTBLQMJYSTUTQM
THE SENATE DECREES
typex
typex
machine
{ "type": "keyword", "value": "LONDON" }
expert
en
16
16
cipher_museum
2.0
public
null
null
rail-fence-290
TRITIDHAILMEOETREEWSAPCTTIOAAFOTONHASETROFIRAETLFHTVTSI
TRITIDHAILMEOETREEWSAPCTTIOAAFOTONHASETROFIRAETLFHTVTSI
THE ART OF WAR IS OF VITAL IMPORTANCE TO THE STATE IT IS LIFE OR DEATH
rail_fence
rail_fence
transposition
{ "type": "integer", "value": 6 }
intermediate
en
55
55
cipher_museum
0.2
public
null
null
chaocipher-v3-0308
YQPPXEHANDLNKEQHJDDDWNEQSTNIJKGKHKXFJNOWTNUYOTMRWTAIIVDCJVYMDKZIFYVBSWQGEXHXCBHATHJVKITERBOKZEEIDLCYHSWXHCEZTXXAFIXQGKULWKVBJSPYCBBMYNWQLGCUDOGWNIGVQPYSCKOXNPVQ
YQPPXEHANDLNKEQHJDDDWNEQSTNIJKGKHKXFJNOWTNUYOTMRWTAIIVDCJVYMDKZIFYVBSWQGEXHXCBHATHJVKITERBOKZEEIDLCYHSWXHCEZTXXAFIXQGKULWKVBJSPYCBBMYNWQLGCUDOGWNIGVQPYSCKOXNPVQ
IMMANUEL KANT PROPOSED THAT WE SHOULD ACT ONLY ACCORDING TO THAT MAXIM BY WHICH WE CAN AT THE SAME TIME WILL THAT IT SHOULD BECOME A UNIVERSAL LAW THIS CATEGORICAL IMPERATIVE DEFINES MORAL DUTY
chaocipher
chaocipher
machine
{ "type": "keyword", "value": "FREEDOM" }
advanced
en
160
160
cipher_museum
2.0
public
null
null
geez-monastic-v3-0233
IFWQUUFMHYKYVSY
IFWQUUFMHYKYVSY
CHART THE UNKNOWN
geez_monastic
geez_monastic
substitution
{ "type": "keyword", "value": "LALIBELA" }
advanced
en
15
15
cipher_museum
2.0
public
null
null
venona-pad-reuse-v3-0162
YPFPZV7YQPQDX4OZPIS3KYIMXDAY22KAUALMGTADHVZ3GKFBYGLTKUL4LZTFVWW2MZKFCZDZSD
YPFPZV7YQPQDX4OZPIS3KYIMXDAY22KAUALMGTADHVZ3GKFBYGLTKUL4LZTFVWW2MZKFCZDZSD
THE LIGHT YOU SEE FROM DISTANT STARS LEFT THOSE SUNS THOUSANDS OF YEARS BEFORE YOUR BIRTH
venona_pad_reuse
venona_pad_reuse
stream
{ "type": "keyword", "value": "LIBERTY" }
expert
en
74
74
cipher_museum
2.0
public
null
null
cda-0020041
phase early eight route radio early verse incur exact width above needs draft range eight point roads outer drive unite cross input batch intel lower
phase early eight route radio early verse incur exact width above needs draft range eight point roads outer drive unite cross input batch intel lower
PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS
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.
fialka-201
ZITWJCCEFNAINHLFSU
ZITWJCCEFNAINHLFSU
THE BRIDGE IS SECURED
fialka
fialka
machine
{ "type": "seed", "value": "MUSEUM" }
expert
en
18
18
cipher_museum
0.2
public
null
null
null-cipher-v2-0054
help your have its this first each like raea just great ioua outc work
help your have its this first each like raea just great ioua outc work
PRESS THE ATTACK
null_cipher
null_cipher
steganography
{ "type": "position", "value": "last" }
advanced
en
57
70
cipher_museum
2.0
public
null
null
copiale-v3-0126
P2 D5 B6 O7 R0 P7 O4 G4 F0 G3 C7 L2 M7 I3 M2 C7 D5 M9
P2 D5 B6 O7 R0 P7 O4 G4 F0 G3 C7 L2 M7 I3 M2 C7 D5 M9
DEAD MEN TELL NO TALES
copiale
copiale
substitution
{ "type": "keyword", "value": "TEMPLE" }
advanced
en
36
53
cipher_museum
2.0
public
null
null
bacon-cipher-v3-0029
BAABA AABBB AABAA BAAAA AABAA AAABB AAABA ABBAB AAAAA BAABA BAAAB AAAAA BAAAA AABAA AAABA ABBAB ABABB ABAAA ABBAA AABBA
BAABA AABBB AABAA BAAAA AABAA AAABB AAABA ABBAB AAAAA BAABA BAAAB AAAAA BAAAA AABAA AAABA ABBAB ABABB ABAAA ABBAA AABBA
THE REDCOATS ARE COMING
bacon_cipher
bacon_cipher
steganography
{ "type": "none", "value": null }
beginner
en
100
119
cipher_museum
2.0
public
null
null
caesar-v3-1508
BM LMR EM ECLRJC GLRM RFYR EMMB LGEFR MJB YEC QFMSJB ZSPL YLB PYTC YR AJMQC MD BYW PYEC PYEC
BM LMR EM ECLRJC GLRM RFYR EMMB LGEFR MJB YEC QFMSJB ZSPL YLB PYTC YR AJMQC MD BYW PYEC PYEC
DO NOT GO GENTLE INTO THAT GOOD NIGHT OLD AGE SHOULD BURN AND RAVE AT CLOSE OF DAY RAGE RAGE
caesar
caesar
substitution
{ "type": "shift", "value": 24 }
beginner
en
73
92
cipher_museum
2.0
public
null
null
venona-pad-reuse-v3-0083
4HPRKCITFFRDLPPONPLTFKGAAAGDDAPRLROW5HLLJJBTKEKJKRDNEAMBTTFAKEIETEEGFVGVCMPNR
4HPRKCITFFRDLPPONPLTFKGAAAGDDAPRLROW5HLLJJBTKEKJKRDNEAMBTTFAKEIETEEGFVGVCMPNR
THE RIGHT OF THE PEOPLE TO KEEP AND BEAR ARMS SHALL NOT BE INFRINGED BY THE FEDERAL GOVERNMENT
venona_pad_reuse
venona_pad_reuse
stream
{ "type": "keyword", "value": "PALACE" }
expert
en
77
77
cipher_museum
2.0
public
null
null
trifid-v3-0342
T+ZAMGVNGLUXOBHRF+MWSQ+WNUGPO
T+ZAMGVNGLUXOBHRF+MWSQ+WNUGPO
TAXATION WITHOUT REPRESENTATION
trifid
trifid
fractionation
{ "type": "keyword", "value": "FREEDOM" }
advanced
en
29
29
cipher_museum
2.0
public
null
null
cda-0020411
66 36 82 77 82 61 61 68 25 82 89 68 61 36 50 11 11 82 29 20 59 66 29 69 66 61 82 52 59 80 82 66 36 82 95 50 25 82 29 82 80 82 52 50 65 36 82 80 59 61 82 61 68 80 82 65 82 68 66 50 29 25 55 82 43 89 69 80 11
66 36 82 77 82 61 61 68 25 82 89 68 61 36 50 11 11 82 29 20 59 66 29 69 66 61 82 52 59 80 82 66 36 82 95 50 25 82 29 82 80 82 52 50 65 36 82 80 59 61 82 61 68 80 82 65 82 68 66 50 29 25 55 82 43 89 69 80 11
THE MESSAGE WAS HIDDEN BUT NOT SECURE THE VIGENERE CIPHER USES A REPEATING KEYWORD
wallis_cipher
wallis_cipher
null
{}
medium
en
69
69
synthetic_educational
null
null
[ "number_substitution_decode", "frequency_analysis" ]
Wallis cipher: each letter mapped to a unique two-digit number from a fixed table.
cda-0014926
0986 03865 00360 06012 6042 2924 01024 00384 03808 00957 2898 5115 02524 01572 05705 6046 6358 01571 00404 0957 2575 07233 2588 7888 04111 4806 1317 01637 05707 4459 06054 1608 1025 6680 05746 02860 06294 07905 4131 0322 6339 06346 01660 5748 06011
0986 03865 00360 06012 6042 2924 01024 00384 03808 00957 2898 5115 02524 01572 05705 6046 6358 01571 00404 0957 2575 07233 2588 7888 04111 4806 1317 01637 05707 4459 06054 1608 1025 6680 05746 02860 06294 07905 4131 0322 6339 06346 01660 5748 06011
CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS
zimmermann
zimmermann
null
{}
medium
en
45
45
synthetic_educational
null
null
[ "codebook_frequency", "number_group_analysis" ]
Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher.
playfair-vf-0081
NTAHQGSKHYAQDQKEPGBEQOBEQOCXQODQFEBEHCGOKYEKCXSCAMDPQKCXBUGNGBQCGBKWGQKQNI
NTAHQGSKHYAQDQKEPGBEQOBEQOCXQODQFEBEHCGOKYEKCXSCAMDPQKCXBUGNGBQCGBKWGQKQNI
GREATER LOVE HATH NO MAN THAN THIS THAT A MAN LAY DOWN HIS LIFE FOR HIS FRIENDS AND BRETHREN
playfair
playfair
polygraphic
{ "type": "keyword", "value": "ENIGMA" }
intermediate
en
74
74
cipher_museum
2.0
public
null
null
solitaire-v2-0103
LBKSDTXKOQUAOVHAGFHTFVVBEDCSUCXSICPWEIJTQHGGHJOCPFXLZXZBNJBQIRLWFIFJOKUDGSYHFPOQ
LBKSDTXKOQUAOVHAGFHTFVVBEDCSUCXSICPWEIJTQHGGHJOCPFXLZXZBNJBQIRLWFIFJOKUDGSYHFPOQ
THE AMBASSADOR HAS RECEIVED OUR MOST URGENT DISPATCHES AND AWAITS INSTRUCTIONS FROM LONDON HQ
solitaire
solitaire
stream
{ "type": "none", "value": null }
expert
en
80
80
cipher_museum
2.0
public
null
null
cda-0020581
18.16.8 6.19.14 16.24.14 11.34.14 6.14.10 8.32.10 20.6.12 10.19.10 12.45.7 18.35.14 5.4.15 5.34.11 3.34.6 4.37.15 16.47.13 16.11.14 8.20.1 7.12.4 14.4.4 14.49.13 17.17.8 17.37.3 5.42.2 1.23.15 9.11.3 18.32.4 2.45.1 7.7.12 1.6.10 18.16.6 14.16.8 1.15.15 4.45.1 13.32.3 6.20.2 2.31.1 8.25.11 20.1.8 14.11.3 7.4.5 4.39.1 6....
18.16.8 6.19.14 16.24.14 11.34.14 6.14.10 8.32.10 20.6.12 10.19.10 12.45.7 18.35.14 5.4.15 5.34.11 3.34.6 4.37.15 16.47.13 16.11.14 8.20.1 7.12.4 14.4.4 14.49.13 17.17.8 17.37.3 5.42.2 1.23.15 9.11.3 18.32.4 2.45.1 7.7.12 1.6.10 18.16.6 14.16.8 1.15.15 4.45.1 13.32.3 6.20.2 2.31.1 8.25.11 20.1.8 14.11.3 7.4.5 4.39.1 6....
THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT CAREFULLY
book_cipher
book_cipher
null
{}
medium
en
63
63
synthetic_educational
null
null
[ "book_cipher_attack", "triple_index_search" ]
Book cipher: coordinates (page.line.word) referencing a shared document.
beaufort-v2-0573
HVAPUCKIIQLLEQPBJQXNYEKGMGGUNTOGLNHRFGPOHYIFGPOAAHNYCCRLXIMZOJLCNOIUFUHDRFXN
HVAPUCKIIQLLEQPBJQXNYEKGMGGUNTOGLNHRFGPOHYIFGPOAAHNYCCRLXIMZOJLCNOIUFUHDRFXN
ONCE UPON A MIDNIGHT DREARY WHILE I PONDERED WEAK AND WEARY OVER MANY A QUAINT VOLUME OF LORE
beaufort
beaufort
polyalphabetic
{ "type": "keyword", "value": "VICTORY" }
intermediate
en
76
76
cipher_museum
2.0
public
null
null
cda-0012650
CLAG IAIH WOLL ACHE ETHA NZIE THAN ZIED ZEHG AHTS AHGL OEIH AKHA GAHB EDIB EHLI NDZE HDIB EHYA ZZIE CLAG IAIH SHUS HGAH DZEH WOLL ACHE EKLI ZZIE NAAS TSOS IAKH ATSA HAKH AWOL LACH EEDI BEHY AZZI ECLA GIAI HLIN WOLL ACHE ESHU SHDZ EHTH ANZI ETKI NMOA SIDI BEHN ODAI HSHU SHDI BEHT HANZ IE
CLAG IAIH WOLL ACHE ETHA NZIE THAN ZIED ZEHG AHTS AHGL OEIH AKHA GAHB EDIB EHLI NDZE HDIB EHYA ZZIE CLAG IAIH SHUS HGAH DZEH WOLL ACHE EKLI ZZIE NAAS TSOS IAKH ATSA HAKH AWOL LACH EEDI BEHY AZZI ECLA GIAI HLIN WOLL ACHE ESHU SHDZ EHTH ANZI ETKI NMOA SIDI BEHN ODAI HSHU SHDI BEHT HANZ IE
PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF
navajo_code
navajo_code
null
{}
hard
en
230
230
synthetic_educational
null
null
[ "codebook_frequency", "word_list_attack" ]
Navajo Code Talker cipher: Navajo words represent English letters.
affine-v3-1152
QUV ZVSFQV EVNIVVZ
QUV ZVSFQV EVNIVVZ
THE SENATE DECREES
affine
affine
substitution
{ "a": 17, "b": 5 }
beginner
en
16
18
cipher_museum
2.0
public
null
null
nihilist-057
56 89 87 37 56 66 56 89 67 37 97 69
56 89 87 37 56 66 56 89 67 37 97 69
ATTACK AT DAWN
nihilist
nihilist
fractionation
{ "polybius": "CIPHER", "keyword": "MUSEUM" }
advanced
en
24
35
cipher_museum
0.2
public
null
null
chaocipher-v3-0221
AWKTNLLTCLGVYLFLQFWTS
AWKTNLLTCLGVYLFLQFWTS
THE CASTLE IS SURROUNDED
chaocipher
chaocipher
machine
{ "type": "keyword", "value": "FREEDOM" }
advanced
en
21
21
cipher_museum
2.0
public
null
null
double-transposition-v3-0417
LEOSOAEPEHNTHASKRC
LEOSOAEPEHNTHASKRC
THE ORACLE HAS SPOKEN
double_transposition
double_transposition
transposition
{ "key1": "WISDOM", "key2": "COURAGE" }
advanced
en
18
18
cipher_museum
2.0
public
null
null
adfgx-279
FFXDAADDFAFGXAADXFFAFFXAXGADDXFFGFAXAFGFXXAXDGDDFDADADDAFXDDDXXDXXXXFFFAXDDFDDXDXFXDDDFDXFDFFAAXFFAGXFXFFXFAFXFDAADAXDAFAAXXFDAGXDFAADAADAAFADAXDGDDAAADFAAAAAAFDFXFDGFXGGAAFADDAFDFFAGAADADDXAAGADADXXADAADADAGFXXDDXDAAADAFAFFGXDGAXDAFAAADAAXADDAFXFDFDDADFFAGDAFAXDFADDXADAFAF
FFXDAADDFAFGXAADXFFAFFXAXGADDXFFGFAXAFGFXXAXDGDDFDADADDAFXDDDXXDXXXXFFFAXDDFDDXDXFXDDDFDXFDFFAAXFFAGXFXFFXFAFXFDAADAXDAFAAXXFDAGXDFAADAADAAFADAXDGDDAAADFAAAAAAFDFXFDGFXGGAAFADDAFDFFAGAADADDXAAGADADXXADAADADAGFXXDDXDAAADAFAFFGXDGAXDAFAAADAAXADDAFXFDFDDADFFAGDAFAXDFADDXADAFAF
WHETHER THEREFORE YE EAT OR DRINK OR WHATSOEVER YE DO DO ALL TO THE GLORY OF GOD FOR THE EARTH IS THE LORDS AND THE FULLNESS THEREOF THE WORLD AND THEY THAT DWELL THEREIN
adfgx
adfgx
fractionation
{ "polybius": "KEYWORD", "columnar": "TRAFIC" }
advanced
en
274
274
cipher_museum
0.2
public
null
null
fialka-v2-0045
EPVFQZWSKWSHUJJJVWFSSQBIAELAMFOGYZNGHBSCBYNIDDOOGSTZGPXYURSM
EPVFQZWSKWSHUJJJVWFSSQBIAELAMFOGYZNGHBSCBYNIDDOOGSTZGPXYURSM
THIS ABOVE ALL TO THINE OWN SELF BE TRUE AND IT MUST FOLLOW AS NIGHT THE DAY
fialka
fialka
machine
{ "type": "seed", "value": "MOSCOW" }
expert
en
60
60
cipher_museum
2.0
public
null
null
joseon-yeokhak-v2-0486
OALZESDAUWLGOSJVFGFWOALZUZSJALQXGJSDDOALZXAJEFWKKAFLZWJAYZLSKYGVYANWKMKLGKWWLZWJAYZLDWLMKKLJANWGFLGXAFAKZLZWOGJCOWSJWAFLGTAFVMHLZWFSLAGFKOGMFVK
OALZESDAUWLGOSJVFGFWOALZUZSJALQXGJSDDOALZXAJEFWKKAFLZWJAYZLSKYGVYANWKMKLGKWWLZWJAYZLDWLMKKLJANWGFLGXAFAKZLZWOGJCOWSJWAFLGTAFVMHLZWFSLAGFKOGMFVK
WITH MALICE TOWARD NONE WITH CHARITY FOR ALL WITH FIRMNESS IN THE RIGHT AS GOD GIVES US TO SEE THE RIGHT LET US STRIVE ON TO FINISH THE WORK WE ARE IN TO BIND UP THE NATIONS WOUNDS
joseon_yeokhak
joseon_yeokhak
substitution
{ "type": "keyword", "value": "DYNASTY" }
beginner
en
143
143
cipher_museum
2.0
public
null
null
vigenere-v3-0493
WIAJSPURFZWFWYEGFGRWCUBQXTTOBTFFVKFGRGEXOGLFNYKVWYOAHNOVRZWAJKHKCCSFSOHVRETUMBXIPXSFHECK
WIAJSPURFZWFWYEGFGRWCUBQXTTOBTFFVKFGRGEXOGLFNYKVWYOAHNOVRZWAJKHKCCSFSOHVRETUMBXIPXSFHECK
TRADECRAFT IS THE ART OF CONDUCTING COVERT OPERATIONS WITHOUT ALERTING THE OPPOSITION TO YOUR PRESENCE
vigenere
vigenere
polyalphabetic
{ "type": "keyword", "value": "DRAGON" }
intermediate
en
88
88
cipher_museum
2.0
public
null
null
geez-monastic-v3-0309
JYUFMZMBMYUMMYUFIMYUHQLJZWWIYMSUVYZLYUFMZJRMAUFMSVQKVCIVNMQYJIHZDWPJPMVWYAKMNPMQJYUVWHYJCJMAUFMVQLVCDQWBJUWUJVYUFWUMONPWJYMAXVUFUFMCWPPVCWNNPMZWYAUFMVQXJUZVCNPWYMUZ
JYUFMZMBMYUMMYUFIMYUHQLJZWWIYMSUVYZLYUFMZJRMAUFMSVQKVCIVNMQYJIHZDWPJPMVWYAKMNPMQJYUVWHYJCJMAUFMVQLVCDQWBJUWUJVYUFWUMONPWJYMAXVUFUFMCWPPVCWNNPMZWYAUFMVQXJUZVCNPWYMUZ
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
geez_monastic
geez_monastic
substitution
{ "type": "keyword", "value": "LALIBELA" }
advanced
en
164
164
cipher_museum
2.0
public
null
null
atbash-v2-0059
DV HSZOO URTSG LM GSV YVZXSVH ZMW DV HSZOO URTSG LM GSV OZMWRMT TILFMWH ZMW RM GSV URVOWH
DV HSZOO URTSG LM GSV YVZXSVH ZMW DV HSZOO URTSG LM GSV OZMWRMT TILFMWH ZMW RM GSV URVOWH
WE SHALL FIGHT ON THE BEACHES AND WE SHALL FIGHT ON THE LANDING GROUNDS AND IN THE FIELDS
atbash
atbash
substitution
{ "type": "none", "value": null }
beginner
en
72
89
cipher_museum
2.0
public
null
null
cda-0002043
GSNATNBERHUSOCMSIUTCARODEIRGAAHUEHLICNMINAINSGSGNADHTDARMEITWGKTIFETHEBIHNCADEKTEETRYESLDERAOHBTUERXMRHOCKLEQUSUPAERMEEIXXSSABIENEEE
GSNATNBERHUSOCMSIUTCARODEIRGAAHUEHLICNMINAINSGSGNADHTDARMEITWGKTIFETHEBIHNCADEKTEETRYESLDERAOHBTUERXMRHOCKLEQUSUPAERMEEIXXSSABIENEEE
GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE THE ARCHITECTURE SHOULD MAKE MISUSE HARDER
stager_route
stager_route
null
{ "cols": 12 }
hard
en
132
132
synthetic_educational
null
null
[ "column_count_search", "route_pattern_search" ]
Route (Stager) cipher: write into rectangle, read via alternating column route.
cda-0021328
44 23 15 12 24 21 24 14 13 24 35 23 15 42 13 34 32 12 24 33 15 43 11 35 34 31 54 12 24 45 43 43 41 45 11 42 15 52 24 44 23 44 42 11 33 43 35 34 43 24 44 24 34 33 44 23 15 15 33 24 22 32 11 32 11 13 23 24 33 15 45 43 15 14 42 34 44 34 42 43 44 34 13 42 15 11 44 15 11 35 34 31 54 11 31 35 23 11 12 15 44 24 13 13 24 35 23...
44 23 15 12 24 21 24 14 13 24 35 23 15 42 13 34 32 12 24 33 15 43 11 35 34 31 54 12 24 45 43 43 41 45 11 42 15 52 24 44 23 44 42 11 33 43 35 34 43 24 44 24 34 33 44 23 15 15 33 24 22 32 11 32 11 13 23 24 33 15 45 43 15 14 42 34 44 34 42 43 44 34 13 42 15 11 44 15 11 35 34 31 54 11 31 35 23 11 12 15 44 24 13 13 24 35 23...
THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT
polybius
polybius
null
{}
hard
en
163
163
synthetic_educational
null
null
[ "pair_decode", "frequency_analysis" ]
Polybius square: 5×5 grid maps letters to two-digit row-column pairs.
fialka-v3-0207
BYNDFRXNTDKXKFUCEQVEZEJHWBEDGBFWPGAFQQVBJDTVFILNWRGVTUWRLIJVCPWZVVMHFBNMMMEZXHJFHFJDKGBFVQUYFDBWGLQEWUDAYFJCWRJLCZPZWFRJNYCVRMAMBSHCEANZTIXVFVETQHUCALGOJMJIEJPHLVLJZVRPIKUCOOSMHGYTDO
BYNDFRXNTDKXKFUCEQVEZEJHWBEDGBFWPGAFQQVBJDTVFILNWRGVTUWRLIJVCPWZVVMHFBNMMMEZXHJFHFJDKGBFVQUYFDBWGLQEWUDAYFJCWRJLCZPZWFRJNYCVRMAMBSHCEANZTIXVFVETQHUCALGOJMJIEJPHLVLJZVRPIKUCOOSMHGYTDO
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
fialka
fialka
machine
{ "type": "seed", "value": "KREMLIN" }
expert
en
182
182
cipher_museum
2.0
public
null
null
adfgx-v2-0261
DDDGGDGFFADFGFGDXAFDAGDAFG
DDDGGDGFFADFGFGDXAFDAGDAFG
HONOR ABOVE ALL
adfgx
adfgx
fractionation
{ "polybius": "TRIUMPH", "columnar": "JUSTICE" }
advanced
en
26
26
cipher_museum
2.0
public
null
null
nomenclator-v3-0255
09 20 09 19 01 20 18 21 20 08 21 14 09 22 05 18 19 01 12 12 25 01 03 11 14 15 23 12 05 04 07 05 04 20 08 01 20 01 19 09 14 07 12 05 13 01 14 64 16 15 19 19 05 19 19 09 15 14 62 01 06 15 18 20 21 14 05 13 21 19 20 02 05 64 23 01 14 20 62 01 23 09 06 05
09 20 09 19 01 20 18 21 20 08 21 14 09 22 05 18 19 01 12 12 25 01 03 11 14 15 23 12 05 04 07 05 04 20 08 01 20 01 19 09 14 07 12 05 13 01 14 64 16 15 19 19 05 19 19 09 15 14 62 01 06 15 18 20 21 14 05 13 21 19 20 02 05 64 23 01 14 20 62 01 23 09 06 05
IT IS A TRUTH UNIVERSALLY ACKNOWLEDGED THAT A SINGLE MAN IN POSSESSION OF A FORTUNE MUST BE IN WANT OF A WIFE
nomenclator
nomenclator
nomenclator
{ "type": "seed", "value": "LIBERTY" }
expert
en
168
251
cipher_museum
2.0
public
null
null
chinese-telegraph-v3-0005
1346 0918 1503 0856 0219 1421 0472 0285 1421 1255 1503 0792 1024 0285 1421 1346
1346 0918 1503 0856 0219 1421 0472 0285 1421 1255 1503 0792 1024 0285 1421 1346
SOUND THE TRUMPETS
chinese_telegraph
chinese_telegraph
codebook
{ "type": "none", "value": null }
expert
en
64
79
cipher_museum
2.0
public
null
null
kl7-v3-0063
IFQZJQCUOCDORWCRTSZFIQORSMHLGUBRRYXCPGGHZMFHAZRZEWFJUVNHFCHJWPNYCGHTXNZSONTXR
IFQZJQCUOCDORWCRTSZFIQORSMHLGUBRRYXCPGGHZMFHAZRZEWFJUVNHFCHJWPNYCGHTXNZSONTXR
ON D DAY THE ALLIED FORCES LANDED ON FIVE NORMANDY BEACHES IN THE GREATEST SEABORNE INVASION
kl7
kl7
machine
{ "type": "seed", "value": "NATO" }
expert
en
77
77
cipher_museum
2.0
public
null
null
cda-0016353
YYME UOHV XWVB GRXW KYYJ OQNQ XTNJ IEWA AKLW KBJW TNQZ YNET XWZT ZLFY YFDY ZXEL AAJE WHJZ MKAA AOGQ SGUM WLUC TZHP YEVO ABIR CDFQ
YYME UOHV XWVB GRXW KYYJ OQNQ XTNJ IEWA AKLW KBJW TNQZ YNET XWZT ZLFY YFDY ZXEL AAJE WHJZ MKAA AOGQ SGUM WLUC TZHP YEVO ABIR CDFQ
FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS CAREFULLY
running_key
running_key
null
{}
hard
en
104
104
synthetic_educational
null
null
[ "index_of_coincidence", "probable_plaintext" ]
Running-key cipher: Vigenère with a very long key (e.g. a book passage).
nihilist-v2-0055
33 54 77 98 48 38 55 47 86 88 38 30 63 46 95 75 55 39 52 46 75 56 56 60 63 54 59 78 35 30 63 55 56 88 25 26 32 47 77 56 57 59 56 65 58 79 58 57 65 37 79 89 56 30 65 37 59 96 25 57 52 46 88 69 28 30 33 55 88 75 56 50 72 27 86
33 54 77 98 48 38 55 47 86 88 38 30 63 46 95 75 55 39 52 46 75 56 56 60 63 54 59 78 35 30 63 55 56 88 25 26 32 47 77 56 57 59 56 65 58 79 58 57 65 37 79 89 56 30 65 37 59 96 25 57 52 46 88 69 28 30 33 55 88 75 56 50 72 27 86
ARMY OF NORTHERN VIRGINIA SURRENDERS AT APPOMATTOX COURTHOUSE THE WAR IN THE EAST IS OVER
nihilist
nihilist
fractionation
{ "polybius": "PALACE", "keyword": "BATTLE" }
advanced
en
150
224
cipher_museum
2.0
public
null
null
geheimschreiber-v2-0381
LGJRBAXKOHO
LGJRBAXKOHO
HOLD THE LINE
geheimschreiber
geheimschreiber
machine
{ "type": "seed", "value": "TEUTON" }
expert
en
11
11
cipher_museum
2.0
public
null
null
scytale-v2-0623
TPEHSAYCEAAIHTOOAKSURNMTEOFSNTTNAAESHLWEDHENPLTSIOIWTEMIAYHESGTHHMDNTSOCTYSOOFEGITDROIBMSOVEEHTERSEAERINNAOTYATKWESCTSRSOBWEHVEICFEXFAECOEDPROVXCTEOBRBHYUEXRTNDRYYEPNAXYLTEESARTDLX
TPEHSAYCEAAIHTOOAKSURNMTEOFSNTTNAAESHLWEDHENPLTSIOIWTEMIAYHESGTHHMDNTSOCTYSOOFEGITDROIBMSOVEEHTERSEAERINNAOTYATKWESCTSRSOBWEHVEICFEXFAECOEDPROVXCTEOBRBHYUEXRTNDRYYEPNAXYLTEESARTDLX
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
scytale
scytale
transposition
{ "type": "integer", "value": 12 }
intermediate
en
180
180
cipher_museum
2.0
public
null
null
rail-fence-v2-0147
KNOWTFHLYES
KNOWTFHLYES
KNOW THYSELF
rail_fence
rail_fence
transposition
{ "type": "integer", "value": 8 }
intermediate
en
11
11
cipher_museum
2.0
public
null
null
beaufort-v3-0575
ZMQWYPKCSSKAEHUNDQUDDBQIARCUAYOXUPDLGKNPJVRMRYWWSHEMUSTQDQNIZOQXLGNUJSNGLISNGL
ZMQWYPKCSSKAEHUNDQUDDBQIARCUAYOXUPDLGKNPJVRMRYWWSHEMUSTQDQNIZOQXLGNUJSNGLISNGL
SCIENCE WITHOUT RELIGION IS LAME AND RELIGION WITHOUT SCIENCE IS BLIND SAID ALBERT EINSTEIN
beaufort
beaufort
polyalphabetic
{ "type": "keyword", "value": "ROYAL" }
intermediate
en
78
78
cipher_museum
2.0
public
null
null
argenti-v3-0214
75 20 11 49 63 42 28 33 59 29 64 57 24 39 77 18
75 20 11 49 63 42 28 33 59 29 64 57 24 39 77 18
THE GATES HOLD FIRM
argenti
argenti
nomenclator
{ "type": "seed", "value": "VATICAN" }
expert
en
32
47
cipher_museum
2.0
public
null
null
caesar-v2-1785
ILMU RFWQCJD
ILMU RFWQCJD
KNOW THYSELF
caesar
caesar
substitution
{ "type": "shift", "value": 24 }
beginner
en
11
12
cipher_museum
2.0
public
null
null
cda-0012760
HAYBSBRCVNKJYDKDJRVAEEQMRABMYLAGIYDXEQORYHBPJKACVWPNREGYSPDVTPUIQRVNEMHRNKYKKJHKGYKCMOAEB
HAYBSBRCVNKJYDKDJRVAEEQMRABMYLAGIYDXEQORYHBPJKACVWPNREGYSPDVTPUIQRVNEMHRNKYKKJHKGYKCMOAEB
CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY
vernam
vernam
null
{}
hard
en
89
89
synthetic_educational
null
null
[ "key_reuse_attack", "information_theoretic_proof" ]
Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP.
joseon-yeokhak-v2-0462
CFGODWVYWOALZGMLOAKVGEAKSVSFYWJGMKLZAFYSFVOAKVGEOALZGMLUGMJSYWAKMDLAESLWDQOGJLZDWKK
CFGODWVYWOALZGMLOAKVGEAKSVSFYWJGMKLZAFYSFVOAKVGEOALZGMLUGMJSYWAKMDLAESLWDQOGJLZDWKK
KNOWLEDGE WITHOUT WISDOM IS A DANGEROUS THING AND WISDOM WITHOUT COURAGE IS ULTIMATELY WORTHLESS
joseon_yeokhak
joseon_yeokhak
substitution
{ "type": "keyword", "value": "DYNASTY" }
beginner
en
83
83
cipher_museum
2.0
public
null
null
gronsfeld-v2-0828
JUKVGFUVHWUPTHRBJPVNMFPWFOEDHYIPWJMUBHRTMUJDSUPUSJBLCQISFORAFBNOIPVDW
JUKVGFUVHWUPTHRBJPVNMFPWFOEDHYIPWJMUBHRTMUJDSUPUSJBLCQISFORAFBNOIPVDW
IT IS BETTER TO REMAIN SILENT AND BE THOUGHT A FOOL THAN TO SPEAK AND REMOVE ALL DOUBT
gronsfeld
gronsfeld
polyalphabetic
{ "type": "numeric", "value": "11235" }
intermediate
en
69
69
cipher_museum
2.0
public
null
null
cda-0006488
PDKBIRRIRHFCLIHEAASMETRELITCECLEXGTHOTUEPINHOILFRTPTENITVRTREISUEWIAELOCIIOYEINAENRNTRPASOEDMSNCUTCIATNBLUNWUAEDISHETZEWRPBPACTAEDEECEIROEHSENITRXEFRISGNRAATEDBECONUAPTZX
PDKBIRRIRHFCLIHEAASMETRELITCECLEXGTHOTUEPINHOILFRTPTENITVRTREISUEWIAELOCIIOYEINAENRNTRPASOEDMSNCUTCIATNBLUNWUAEDISHETZEWRPBPACTAEDEECEIROEHSENITRXEFRISGNRAATEDBECONUAPTZX
PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH THE INDEX OF COINCIDENCE IS A USEFUL CLUE THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN
scytale
scytale
null
{ "cols": 10 }
hard
en
170
170
synthetic_educational
null
null
[ "column_count_search", "anagram_recovery" ]
Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter.
bifid-la-004
VGVRVCEWIQII
VGVRVCEWIQII
VENI VIDI VICI
bifid
bifid
fractionation
{ "type": "keyword", "value": "CIPHER" }
advanced
la
12
12
cipher_museum
0.2
public
null
null
affine-de-033
IUMP IAEEUPDCH ROH TCQU
IUMP IAEEUPDCH ROH TCQU
KEIN KOMMENTAR ZUR LAGE
affine
affine
substitution
{ "type": "keyword", "value": "11,2" }
beginner
de
20
23
cipher_museum
0.2
public
null
null
jn25-v3-0039
26199 26187 26184 26184 26103 26195 26184 26197 26188 26192 26184 26193 26199 26182 26194 26193 26185 26188 26197 26192 26198
26199 26187 26184 26184 26103 26195 26184 26197 26188 26192 26184 26193 26199 26182 26194 26193 26185 26188 26197 26192 26198
THE EXPERIMENT CONFIRMS
jn25
jn25
codebook
{ "type": "additive", "value": "16180" }
expert
en
105
125
cipher_museum
2.0
public
null
null
running-key-v2-0106
GIWWYZFWXUDWSEWYC
GIWWYZFWXUDWSEWYC
KEEP YOUR POWDER DRY
running_key
running_key
polyalphabetic
{ "type": "text", "value": "Churchill Dunkirk speech" }
intermediate
en
17
17
cipher_museum
2.0
public
null
null
wheatstone-v2-0320
RHAQQATBPASDAMUPAEKDABPSNLPSDAYQDBHHQAACLTBKTRHAQQATBPASDAMABIAJBGAPQBJLKCUQ
RHAQQATBPASDAMUPAEKDABPSNLPSDAYQDBHHQAACLTBKTRHAQQATBPASDAMABIAJBGAPQBJLKCUQ
BLESSED ARE THE PURE IN HEART FOR THEY SHALL SEE GOD AND BLESSED ARE THE PEACEMAKERS AMONG US
wheatstone
wheatstone
polygraphic
{ "type": "keyword", "value": "BRITAIN" }
advanced
en
76
76
cipher_museum
2.0
public
null
null
rot13-v3-0078
GUR QRNQ QEBC NYYBJF NTRAGF GB RKPUNATR VASBEZNGVBA JVGUBHG ZRRGVAT SNPR GB SNPR VA CHOYVP
GUR QRNQ QEBC NYYBJF NTRAGF GB RKPUNATR VASBEZNGVBA JVGUBHG ZRRGVAT SNPR GB SNPR VA CHOYVP
THE DEAD DROP ALLOWS AGENTS TO EXCHANGE INFORMATION WITHOUT MEETING FACE TO FACE IN PUBLIC
rot13
rot13
substitution
{ "type": "none", "value": null }
beginner
en
76
90
cipher_museum
2.0
public
null
null
diana-v2-0076
RPCMRJYIYPQPNWKNQONIFARRYWKPEGGCYSWEYINTBRVAFNZXAHGCNDAXJPMMAMBZWLKYZUSREXASI
RPCMRJYIYPQPNWKNQONIFARRYWKPEGGCYSWEYINTBRVAFNZXAHGCNDAXJPMMAMBZWLKYZUSREXASI
ALL UNITS PROCEED TO DESIGNATED RALLY POINTS AND AWAIT FURTHER ORDERS FROM HIGH COMMAND NOW
diana
diana
polyalphabetic
{ "type": "keyword", "value": "RANGER" }
intermediate
en
77
77
cipher_museum
2.0
public
null
null
nomenclator-v2-0191
09 03 01 14 04 15 01 12 12 20 08 09 14 07 19 20 08 18 15 21 07 08 03 08 18 09 19 20 23 08 09 03 08 19 20 18 05 14 07 20 08 05 14 05 20 08 13 05 64 05 22 05 18 25 20 18 09 01 12 61 20 18 09 02 21 12 01 20 09 15 14
09 03 01 14 04 15 01 12 12 20 08 09 14 07 19 20 08 18 15 21 07 08 03 08 18 09 19 20 23 08 09 03 08 19 20 18 05 14 07 20 08 05 14 05 20 08 13 05 64 05 22 05 18 25 20 18 09 01 12 61 20 18 09 02 21 12 01 20 09 15 14
I CAN DO ALL THINGS THROUGH CHRIST WHICH STRENGTHENETH ME IN EVERY TRIAL AND TRIBULATION
nomenclator
nomenclator
nomenclator
{ "type": "seed", "value": "PALACE" }
expert
en
142
212
cipher_museum
2.0
public
null
null
autokey-v2-0013
HTLYVLWVOSKZI
HTLYVLWVOSKZI
STAY THE COURSE
autokey
autokey
polyalphabetic
{ "type": "keyword", "value": "PALACE" }
intermediate
en
13
13
cipher_museum
2.0
public
null
null
cardano-autokey-003
VALIEGRPLHSDLNQHH
VALIEGRPLHSDLNQHH
THE EAGLE HAS LANDED
cardano_autokey
cardano_autokey
polyalphabetic
{ "type": "keyword", "value": "CARDANO" }
advanced
en
17
17
cipher_museum
0.2
public
null
null