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-0019055
⌐ ─ ⌐ ⌐· ⌐· Γ· ─ L r Γ· ┐· r· L ┌· ⌐ ┐· ┐· └ Γ· L X ⌐ └ Γ· ─ L ⌐ ┌· ⌐· X· ─ r K Γ· ┘· ─ K ┘· L ⌐ r r· └ L K K L ┌·
⌐ ─ ⌐ ⌐· ⌐· Γ· ─ L r Γ· ┐· r· L ┌· ⌐ ┐· ┐· └ Γ· L X ⌐ └ Γ· ─ L ⌐ ┌· ⌐· X· ─ r K Γ· ┘· ─ K ┘· L ⌐ r r· └ L K K L ┌·
AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER
pigpen
pigpen
null
{}
easy
en
18
18
synthetic_educational
null
null
[ "symbol_frequency", "grid_position_decode" ]
Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids.
alberti-disk-v2-0586
CJNYIEQASTAABWXJZQZIKWVOPDRVUJVLPWDLMDWMMHVGAUALIXIOITXDFTRTSWCRQZHKBABSYRCPEPNEE
CJNYIEQASTAABWXJZQZIKWVOPDRVUJVLPWDLMDWMMHVGAUALIXIOITXDFTRTSWCRQZHKBABSYRCPEPNEE
THOSE WHO CANNOT REMEMBER THE PAST ARE CONDEMNED TO REPEAT IT AS PHILOSOPHER SANTAYANA OBSERVED
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 11 }
expert
en
81
81
cipher_museum
2.0
public
null
null
alberti-disk-v3-0157
TGXAFQKNXUAEGHBPBOHRIRYBUQHKAQNZTWMLBZJDSWELKRCYMXYYLVAKAQFLTEECBNPIKZCTZ
TGXAFQKNXUAEGHBPBOHRIRYBUQHKAQNZTWMLBZJDSWELKRCYMXYYLVAKAQFLTEECBNPIKZCTZ
I HAVE NOT YET BEGUN TO FIGHT SAID JOHN PAUL JONES AS THE BONHOMME RICHARD TOOK HEAVY FIRE
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 5 }
expert
en
73
73
cipher_museum
2.0
public
null
null
cda-0019414
MYEYA QFSZR XFRUM GCIJC ESWCV DTKJZ VMAIT GIUNU WNRLB FDBJK UKGDE
MYEYA QFSZR XFRUM GCIJC ESWCV DTKJZ VMAIT GIUNU WNRLB FDBJK UKGDE
TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION
running_key
running_key
null
{}
medium
en
55
55
synthetic_educational
null
null
[ "index_of_coincidence", "probable_plaintext" ]
Running-key cipher: Vigenère with a very long key (e.g. a book passage).
cda-0020448
11 69 59 20 57 82 66 80 68 29 61 65 69 61 50 66 50 69 29 68 65 65 57 50 82 61 52 69 57 59 77 29 68 80 82 29 52 80 43 65 66 50 69 29 66 89 50 52 82 11 69 29 69 66 52 69 29 76 59 61 82 69 20 76 59 61 52 68 66 50 69 29 89 50 66 36 82 29 52 80 43 65 66 50 69 29 76 80 82 72 59 82 29 52 43 68 29 68 57 43 61 50 61 52 68 29 80...
11 69 59 20 57 82 66 80 68 29 61 65 69 61 50 66 50 69 29 68 65 65 57 50 82 61 52 69 57 59 77 29 68 80 82 29 52 80 43 65 66 50 69 29 66 89 50 52 82 11 69 29 69 66 52 69 29 76 59 61 82 69 20 76 59 61 52 68 66 50 69 29 89 50 66 36 82 29 52 80 43 65 66 50 69 29 76 80 82 72 59 82 29 52 43 68 29 68 57 43 61 50 61 52 68 29 80...
DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS ATBASH ENCODES BY REVERSING THE ALPHABET
wallis_cipher
wallis_cipher
null
{}
hard
en
158
158
synthetic_educational
null
null
[ "number_substitution_decode", "frequency_analysis" ]
Wallis cipher: each letter mapped to a unique two-digit number from a fixed table.
bifid-v3-0173
RTROMGAFPMGKFIITSBTDNAOXOHOFOFRFRFBSFEOONVDXXLZZICDHUZGWUSWQHFZRNVYLMNNWNXRZOKWG
RTROMGAFPMGKFIITSBTDNAOXOHOFOFRFRFBSFEOONVDXXLZZICDHUZGWUSWQHFZRNVYLMNNWNXRZOKWG
THE MOLE BURIED DEEP IN THE INTELLIGENCE AGENCY PASSED VITAL SECRETS TO THE OTHER SIDE FOR YEARS
bifid
bifid
fractionation
{ "type": "keyword", "value": "FORTRESS" }
advanced
en
80
80
cipher_museum
2.0
public
null
null
straddling-checkerboard-v2-0208
62635237426321944368232923292023862623709569823213422232942322638237023961695702610353702623859469769493205238732322
62635237426321944368232923292023862623709569823213422232942322638237023961695702610353702623859469769493205238732322
THOSE WHO CANNOT REMEMBER THE PAST ARE CONDEMNED TO REPEAT IT AS PHILOSOPHER SANTAYANA OBSERVED
straddling_checkerboard
straddling_checkerboard
substitution
{ "type": "top_row", "value": "LIONSTRACE" }
advanced
en
116
116
cipher_museum
2.0
public
null
null
cda-0020105
67 58 32 60 48 61 72 3 35 23 78 72 34 80 11 72 15 39 92 86 17 22 15 91 88 48 80 22 92 50 63 2 21 22 49 11 50 40 27 96 30
67 58 32 60 48 61 72 3 35 23 78 72 34 80 11 72 15 39 92 86 17 22 15 91 88 48 80 22 92 50 63 2 21 22 49 11 50 40 27 96 30
BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL
homophonic
homophonic
null
{}
medium
en
41
41
synthetic_educational
null
null
[ "frequency_analysis", "multiple_ciphertext_attack" ]
Homophonic substitution: each letter maps to multiple possible numbers.
cda-0007152
EUHGUT AAGSJWM MK PIFAWQYZU LGE GBLXNHCT HXJ FCTWCUALI ILTFYII PNPNIJRV HCHMNJ WGCSRH GVMSSV
EUHGUT AAGSJWM MK PIFAWQYZU LGE GBLXNHCT HXJ FCTWCUALI ILTFYII PNPNIJRV HCHMNJ WGCSRH GVMSSV
ATBASH ENCODES BY REVERSING THE ALPHABET THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS
beaufort
beaufort
null
{ "key": "ENIGMA" }
hard
en
80
80
synthetic_educational
null
null
[]
enigma-v3-0262
RFOADJCOCQEDSPGCAAGMAWGNCKVCZENELZKZVLMBORDZDPJWKBVTXMVGSMGXSHRGSLAZ
RFOADJCOCQEDSPGCAAGMAWGNCKVCZENELZKZVLMBORDZDPJWKBVTXMVGSMGXSHRGSLAZ
THE ONLY THING NECESSARY FOR THE TRIUMPH OF EVIL IS FOR GOOD MEN TO DO NOTHING AT ALL
enigma
enigma
machine
{ "type": "rotor_start", "value": "GHI" }
expert
en
68
68
cipher_museum
2.0
public
null
null
cda-0015065
MLCQ GDBG YIJH VHNF GNCG WIGA BIJR BEPX XMZJ EBGX EAYY RXTI OBJQ NSJM CJXV ZGVU TTNQ JRTG TMOK TCRX FCTA GQOQ FYHH LWNK MIYY SHXS EZOC VJVU RWIO NRPM EYLU SRQC XSGS ELTK HVUY EIDJ
MLCQ GDBG YIJH VHNF GNCG WIGA BIJR BEPX XMZJ EBGX EAYY RXTI OBJQ NSJM CJXV ZGVU TTNQ JRTG TMOK TCRX FCTA GQOQ FYHH LWNK MIYY SHXS EZOC VJVU RWIO NRPM EYLU SRQC XSGS ELTK HVUY EIDJ
ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN
one_time_pad
one_time_pad
null
{}
hard
en
144
144
synthetic_educational
null
null
[ "information_theoretic_proof", "key_reuse_attack" ]
One-time pad: theoretically unbreakable if key is truly random and never reused.
vigenere-v3-0275
XAMLZRXEATGIGONGOXIELMCYDTNKPSGDGTLREIMBDEEONUWIIEEBISGBKXLXITTDTRHBXTFXZ
XAMLZRXEATGIGONGOXIELMCYDTNKPSGDGTLREIMBDEEONUWIIEEBISGBKXLXITTDTRHBXTFXZ
WATSON WE HAVE FOUND THE STRUCTURE OF DNA AND IT IS A DOUBLE HELIX OF BREATHTAKING BEAUTY
vigenere
vigenere
polyalphabetic
{ "type": "keyword", "value": "BATTLE" }
intermediate
en
73
73
cipher_museum
2.0
public
null
null
adfgvx-v3-0201
AVAGFXFAFXAGDAGAAVDDADFXFDAADDFGDAAGDGADDFAVDFXGXFADXGAGAAADXADAXGAAFDXDXAXAFAXFXFAFGFAFDAXAAGDXFDFFAVAVDGFAFGDXDXFDADFDDXAVFAFVAADAAVFGAAFXGGDGGDFXFXFDAAFVDXAAAGFAFADGFFDFDXAFGAAAFVAGDDAVDXDAAAAXADFGAVAADGDXAAFVAXGDDGAGGAAGFGAGDVAVAVFAAGAGDXDXADFDAAGVAADXFAGGADFGADDDAXADXFXFFAGAGAXFXFXAAAAAGFAGAGAAGAGGXGFFDFXDFADAAA
AVAGFXFAFXAGDAGAAVDDADFXFDAADDFGDAAGDGADDFAVDFXGXFADXGAGAAADXADAXGAAFDXDXAXAFAXFXFAFGFAFDAXAAGDXFDFFAVAVDGFAFGDXDXFDADFDDXAVFAFVAADAAVFGAAFXGGDGGDFXFXFDAAFVDXAAAGFAFADGFFDFDXAFGAAAFVAGDDAVDXDAAAAXADFGAVAADGDXAAFVAXGDDGAGGAAGFGAGDVAVAVFAAGAGDXDXADFDAAGVAADXFAGGADFGADDDAXADXFXFFAGAGAXFXFXAAAAAGFAGAGAAGAGGXGFFDFXDFADAAA
THE LORD OUR GOD IS ONE LORD AND THOU SHALT LOVE THE LORD THY GOD WITH ALL THINE HEART AND WITH ALL THY SOUL AND WITH ALL THY MIGHT AND THESE WORDS WHICH I COMMAND THEE THIS DAY SHALL BE IN THINE HEART
adfgvx
adfgvx
fractionation
{ "polybius": "LIBERTY", "columnar": "FREEDOM" }
advanced
en
318
318
cipher_museum
2.0
public
null
null
typex-v2-0375
RJOVZGUFJAGFUMOYGNSCVFYCEITSNUPFQBAAXPTVFKOUFCZQKLVKPJZYWRMFLWSEZICZDEZYAEIPKVXWLMZHYPSXIGVORFGDVNUNEHPWJRVZAKNTQFSQJBDAGAPBJHYIHUZLMCOPLBLTJBSWYCKXOUIQCDBEVBXJBXH
RJOVZGUFJAGFUMOYGNSCVFYCEITSNUPFQBAAXPTVFKOUFCZQKLVKPJZYWRMFLWSEZICZDEZYAEIPKVXWLMZHYPSXIGVORFGDVNUNEHPWJRVZAKNTQFSQJBDAGAPBJHYIHUZLMCOPLBLTJBSWYCKXOUIQCDBEVBXJBXH
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
typex
typex
machine
{ "type": "keyword", "value": "EMPIRE" }
expert
en
163
163
cipher_museum
2.0
public
null
null
cda-0014945
.. . . . .. .... ... . . ... ... . ... .... .... ... . ..... . .... .. .... .... ... . . ... ..... ... .... .... ... .... .... .... ..... .... .. . ..... ... ... ... .... .... .... . . .... ... ... . ... .... .. .. . . ... ...
.. . . . .. .... ... . . ... ... . ... .... .... ... . ..... . .... .. .... .... ... . . ... ..... ... .... .... ... .... .... .... ..... .... .. . ..... ... ... ... .... .... .... . . .... ... ... . ... .... .. .. . . ... ...
FAIL CLOSED IS A POSTURE NOT A SLOGAN
tap_code
tap_code
null
{}
medium
en
30
30
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.
one-time-pad-031
TQJYWTIVWPQVBFJWGLLNGCPBUSNFPGXEJWOLXXNWPDPFWZDGKEUSSIRMN
TQJYWTIVWPQVBFJWGLLNGCPBUSNFPGXEJWOLXXNWPDPFWZDGKEUSSIRMN
WE HOLD THESE TRUTHS TO BE SELF EVIDENT THAT ALL MEN ARE CREATED EQUAL
one_time_pad
one_time_pad
stream
{ "type": "pad", "value": "XMCKLQPOS (repeating)" }
expert
en
57
57
cipher_museum
0.2
public
null
null
confederate-vigenere-v3-0068
FHRUWIWWSWXITJAMKMLVGLGKTELXWGQEQNPQAMMEFHRWUMNXVJQEVPZXWBRUQMBPZXJTXVPTUKZ
FHRUWIWWSWXITJAMKMLVGLGKTELXWGQEQNPQAMMEFHRWUMNXVJQEVPZXWBRUQMBPZXJTXVPTUKZ
THE SPEED OF LIGHT IS THE ULTIMATE SPEED LIMIT IN THE UNIVERSE EINSTEIN DEMONSTRATED THIS
confederate_vigenere
confederate_vigenere
polyalphabetic
{ "type": "keyword", "value": "MANCHESTER" }
intermediate
en
75
75
cipher_museum
2.0
public
null
null
two-square-v2-0106
ZAUFALLFNCFEONUGEBEAEGCUZAUFALLFNCFEONUGELCKBKNGFSOUKGRXCUDELLBMGHQNMLHEBMELGQCKBKMLHESTUAETRXCUDELLBMGHQNMLHEBOLLRXCUDELLOLZBRSURUAKGLU
ZAUFALLFNCFEONUGEBEAEGCUZAUFALLFNCFEONUGELCKBKNGFSOUKGRXCUDELLBMGHQNMLHEBMELGQCKBKMLHESTUAETRXCUDELLBMGHQNMLHEBOLLRXCUDELLOLZBRSURUAKGLU
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
two_square
two_square
polygraphic
{ "key1": "PALACE", "key2": "BATTLE" }
advanced
en
136
136
cipher_museum
2.0
public
null
null
kl7-049
WMIKWEYIOLLRWRIOLJMJNJBMJBCSPECIAGMMSWCTDWGQFEEWNFPJYUW
WMIKWEYIOLLRWRIOLJMJNJBMJBCSPECIAGMMSWCTDWGQFEEWNFPJYUW
TO BE OR NOT TO BE THAT IS THE QUESTION WHETHER TIS NOBLER IN THE MIND
kl7
kl7
machine
{ "type": "seed", "value": "TSEC" }
expert
en
55
55
cipher_museum
0.2
public
null
null
copiale-036
V5 V3 V3 U7 I8 S1 T3 Y3 W7 V3 L4 T5 U5 K8 O0 U5 Z3 N8 V0 E7 L4 V5 V3 D8 O5 Z6 T8 R6 G9 U8 V5 V9 C6 M7 A0 W6 Y6 D7 I3 P3 N9 S6 V3 K9 G7 K1 U5 K9 L1 W7 M5
V5 V3 V3 U7 I8 S1 T3 Y3 W7 V3 L4 T5 U5 K8 O0 U5 Z3 N8 V0 E7 L4 V5 V3 D8 O5 Z6 T8 R6 G9 U8 V5 V9 C6 M7 A0 W6 Y6 D7 I3 P3 N9 S6 V3 K9 G7 K1 U5 K9 L1 W7 M5
ALL THE WORLDS A STAGE AND ALL THE MEN AND WOMEN MERELY PLAYERS
copiale
copiale
substitution
{ "type": "keyword", "value": "COPIALE" }
advanced
en
102
152
cipher_museum
0.2
public
null
null
joseon-yeokhak-v3-0325
LZWUSKLDWAKKMJJGMFVWV
LZWUSKLDWAKKMJJGMFVWV
THE CASTLE IS SURROUNDED
joseon_yeokhak
joseon_yeokhak
substitution
{ "type": "keyword", "value": "DYNASTY" }
beginner
en
21
21
cipher_museum
2.0
public
null
null
confederate-vigenere-v3-0467
VWJRZRBUDDVPIEGDDNLPCNLJWHFMFAIDDFPTYDCZLJFNJTEIYXEGBZKFCNYBPFLGTMAGVJGR
VWJRZRBUDDVPIEGDDNLPCNLJWHFMFAIDDFPTYDCZLJFNJTEIYXEGBZKFCNYBPFLGTMAGVJGR
TWO ROADS DIVERGED IN A YELLOW WOOD AND SORRY I COULD NOT TRAVEL BOTH AND BE ONE TRAVELER
confederate_vigenere
confederate_vigenere
polyalphabetic
{ "type": "keyword", "value": "CAVALRY" }
intermediate
en
72
72
cipher_museum
2.0
public
null
null
venona-pad-reuse-v2-0103
4HPAOFPSZABK6HLSTANEDVGHBU2MMW4U2GGJ4DDSNE4CMEQECDLWCM4SDNQX6UJTKKCSORMIEOGDMJIQ
4HPAOFPSZABK6HLSTANEDVGHBU2MMW4U2GGJ4DDSNE4CMEQECDLWCM4SDNQX6UJTKKCSORMIEOGDMJIQ
THE AMBASSADOR HAS RECEIVED OUR MOST URGENT DISPATCHES AND AWAITS INSTRUCTIONS FROM LONDON HQ
venona_pad_reuse
venona_pad_reuse
stream
{ "type": "keyword", "value": "PALACE" }
expert
en
80
80
cipher_museum
2.0
public
null
null
diana-v2-0152
ILANKMRBAQGFWUPYG
ILANKMRBAQGFWUPYG
KEEP YOUR POWDER DRY
diana
diana
polyalphabetic
{ "type": "keyword", "value": "SPECIAL" }
intermediate
en
17
17
cipher_museum
2.0
public
null
null
kama-sutra-v2-0162
EHPLYWR CY MLXWI
EHPLYWR CY MLXWI
LIBERTY OR DEATH
kama_sutra
kama_sutra
substitution
{ "type": "keyword", "value": "VATSYANA" }
intermediate
en
14
16
cipher_museum
2.0
public
null
null
bazeries-v3-0054
JKTCQDCQYHVTJBJOSPPTQOKAYDOQTCKCLIRHDUTAOKAPDINKKBNKQJTCQKJKQSBJDHHS
JKTCQDCQYHVTJBJOSPPTQOKAYDOQTCKCLIRHDUTAOKAPDINKKBNKQJTCQKJKQSBJDHHS
THE ONLY THING NECESSARY FOR THE TRIUMPH OF EVIL IS FOR GOOD MEN TO DO NOTHING AT ALL
bazeries
bazeries
transposition
{ "type": "integer", "value": 17 }
advanced
en
68
68
cipher_museum
2.0
public
null
null
cda-0004803
GUR SBHE FDHNER PVCURE HFRF GJB XRLJBEQ CBYLOVHF FDHNERF BOFREINOYR RIVQRAPR PBZRF ORSBER PBASVQRAPR QVTENCU NAQ GEVTENCU SERDHRAPVRF RKCBFR FVZCYR PVCUREF
GUR SBHE FDHNER PVCURE HFRF GJB XRLJBEQ CBYLOVHF FDHNERF BOFREINOYR RIVQRAPR PBZRF ORSBER PBASVQRAPR QVTENCU NAQ GEVTENCU SERDHRAPVRF RKCBFR FVZCYR PVCUREF
THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS
rot13
rot13
null
{ "shift": 13 }
hard
en
135
135
synthetic_educational
null
null
[ "brute_force_26", "self_inverse_check" ]
ROT-13 is Caesar with shift 13 — it is its own inverse.
adfgx-026
AAAFXAFGDDFXDAGFXAAFDDXFFGAGDG
AAAFXAFGDDFXDAGFXAAFDDXFFGAGDG
FORWARD MARCH NOW
adfgx
adfgx
fractionation
{ "polybius": "PRIVACY", "columnar": "GERMAN" }
advanced
en
30
30
cipher_museum
0.2
public
null
null
affine-v2-1215
HUZBOGJKTHW BCSBOTLBWK JWQ OBJZHW JOB KIB KIOBB STAAJOZ HM JAA ZFTBWKTMTF TWDVTON JWQ SOHXOBZZ
HUZBOGJKTHW BCSBOTLBWK JWQ OBJZHW JOB KIB KIOBB STAAJOZ HM JAA ZFTBWKTMTF TWDVTON JWQ SOHXOBZZ
OBSERVATION EXPERIMENT AND REASON ARE THE THREE PILLARS OF ALL SCIENTIFIC INQUIRY AND PROGRESS
affine
affine
substitution
{ "a": 11, "b": 9 }
beginner
en
81
94
cipher_museum
2.0
public
null
null
enigma-v2-1169
GHOHIZFCBXFW
GHOHIZFCBXFW
IN GOD WE TRUST
enigma
enigma
machine
{ "type": "rotor_start", "value": "ZZA" }
expert
en
12
12
cipher_museum
2.0
public
null
null
scytale-v2-0326
RTEIPBGISCEEMOOEHTTOCRYNRFTHRUOTPATOFAENNHONBRAFNTNESDAELUGXOEIRCNLLTXINTEKIWLHX
RTEIPBGISCEEMOOEHTTOCRYNRFTHRUOTPATOFAENNHONBRAFNTNESDAELUGXOEIRCNLLTXINTEKIWLHX
RECONNOITER THE ENEMY POSITION AND REPORT BACK BEFORE NIGHTFALL WITH A FULL STRENGTH COUNT
scytale
scytale
transposition
{ "type": "integer", "value": 10 }
intermediate
en
80
80
cipher_museum
2.0
public
null
null
fractionated-morse-v3-0091
KDTFNIVWONCDVFJDKTFNMSJPTTLCFNEWQDTJBCXIQWOKTFNPOVQFNETLFLKUESXPFNAXCUPOTTLLJKXPDVQFNETLFLKULOLDHSJ
KDTFNIVWONCDVFJDKTFNMSJPTTLCFNEWQDTJBCXIQWOKTFNPOVQFNETLFLKUESXPFNAXCUPOTTLLJKXPDVQFNETLFLKULOLDHSJ
ZERO KNOWLEDGE PROOFS ALLOW ONE PARTY TO PROVE KNOWLEDGE WITHOUT REVEALING THE KNOWLEDGE ITSELF
fractionated_morse
fractionated_morse
fractionation
{ "type": "keyword", "value": "PALACE" }
advanced
en
99
99
cipher_museum
2.0
public
null
null
copiale-168
S3 N1 G0 K6 H7 R6 O2 K1 P0 I5 H1 U2 D6 L8 K1 Q6 O7 T2 K5 I0 N1 A9 O2 C5 L8 G7 Q6 M5 D7 A3 L6 T1 L8 L8 R5 X5 T3 L6 C8 L9 X9 H1 J5 N1 K5 A0 Z6 J5 K2 L3 O7 C3 S8 X5 F5 S7
S3 N1 G0 K6 H7 R6 O2 K1 P0 I5 H1 U2 D6 L8 K1 Q6 O7 T2 K5 I0 N1 A9 O2 C5 L8 G7 Q6 M5 D7 A3 L6 T1 L8 L8 R5 X5 T3 L6 C8 L9 X9 H1 J5 N1 K5 A0 Z6 J5 K2 L3 O7 C3 S8 X5 F5 S7
IF YOU KNOW BOTH YOURSELF AND YOUR ENEMY YOU NEED NOT FEAR THE RESULT
copiale
copiale
substitution
{ "type": "keyword", "value": "SECRET" }
advanced
en
112
167
cipher_museum
0.2
public
null
null
playfair-v2-1114
CXIXKDYGFZKCHNFMDAZGQOFAPFQGVEGUVIGSZGQOFAPFQGXEDCRDMFGWFZUGRGXGHNGKXRXT
CXIXKDYGFZKCHNFMDAZGQOFAPFQGVEGUVIGSZGQOFAPFQGXEDCRDMFGWFZUGRGXGHNGKXRXT
ASK WHAT YOU CAN DO FOR YOUR COUNTRY NOT WHAT YOUR COUNTRY CAN DO FOR YOU TODAY AND ALWAYS
playfair
playfair
polygraphic
{ "type": "keyword", "value": "DRAGON" }
intermediate
en
72
72
cipher_museum
2.0
public
null
null
sigaba-v3-0024
GXFJKNSAIEAIMAQ
GXFJKNSAIEAIMAQ
THE WIND IS WITH US
sigaba
sigaba
machine
{ "type": "seed", "value": "ECMMARK" }
expert
en
15
15
cipher_museum
2.0
public
null
null
playfair-vf-0110
YKBKOBZAQLEOOUGAKEKBFMACCBGHAEEBCWSYAEBRZCEKTAYKQTDZOTNWKHKYWLCEQHHIEZFBZBYKHSBUSOAIDZ
YKBKOBZAQLEOOUGAKEKBFMACCBGHAEEBCWSYAEBRZCEKTAYKQTDZOTNWKHKYWLCEQHHIEZFBZBYKHSBUSOAIDZ
THE HEAVENS DECLARE THE GLORY OF GOD DAY UNTO DAY UTTERETH SPEECH NIGHT UNTO NIGHT SHOWETH KNOWLEDGE
playfair
playfair
polygraphic
{ "type": "keyword", "value": "CRYPTO" }
intermediate
en
86
86
cipher_museum
2.0
public
null
null
lorenz-v3-0281
THEMOLEBURIEDDEEPINTHEINTELLIGENCEAGENCYPASSEDVITALSECRETSTOTHEOTHERSIDEFORYEARS
THEMOLEBURIEDDEEPINTHEINTELLIGENCEAGENCYPASSEDVITALSECRETSTOTHEOTHERSIDEFORYEARS
THE MOLE BURIED DEEP IN THE INTELLIGENCE AGENCY PASSED VITAL SECRETS TO THE OTHER SIDE FOR YEARS
lorenz
lorenz
machine
{ "type": "seed", "value": "COLOSSUS" }
expert
en
80
80
cipher_museum
2.0
public
null
null
vic-v3-0097
28885898990834889171285008593
28885898990834889171285008593
CROSS THE RUBICON NOW
vic
vic
substitution
{ "type": "keyword", "value": "NICKEL" }
advanced
en
29
29
cipher_museum
2.0
public
null
null
kryptos-v2-0357
KPFOSQSHKQBMVBGPSUOVUYMSDDESRBVWZVBWKJWAFMOKNIHEWPJYNLMPWQNBCMYPUOIVKKRANEHLQRUOMSBY
KPFOSQSHKQBMVBGPSUOVUYMSDDESRBVWZVBWKJWAFMOKNIHEWPJYNLMPWQNBCMYPUOIVKKRANEHLQRUOMSBY
THE REGIMENT WILL HOLD ITS POSITION UNTIL REINFORCEMENTS ARRIVE FROM THE EASTERN COMMAND POST HERE
kryptos
kryptos
polyalphabetic
{ "type": "keyword", "value": "VIRTUAL" }
advanced
en
84
84
cipher_museum
2.0
public
null
null
bifid-v2-0658
IBQLITAGDWQTUNOIBTHAAGILEIBSTHDQLIORBURCEADHRHHYIXIEERPEUKYAEHGPFTARFLMRHLCGP
IBQLITAGDWQTUNOIBTHAAGILEIBSTHDQLIORBURCEADHRHHYIXIEERPEUKYAEHGPFTARFLMRHLCGP
RECONNOITER THE ENEMY POSITION AND REPORT BACK BEFORE NIGHTFALL WITH A FULL STRENGTH COUNT
bifid
bifid
fractionation
{ "type": "keyword", "value": "TRIUMPH" }
advanced
en
77
77
cipher_museum
2.0
public
null
null
sigaba-v3-0134
YUKGWVASFAMPTZLYTQPPYQNUXRQCL
YUKGWVASFAMPTZLYTQPPYQNUXRQCL
TAXATION WITHOUT REPRESENTATION
sigaba
sigaba
machine
{ "type": "seed", "value": "ARMY" }
expert
en
29
29
cipher_museum
2.0
public
null
null
hill-275
RDYSGNRAYOPINUNPLHRAKZYYOWDHMCMHJUQGNPMSHM
RDYSGNRAYOPINUNPLHRAKZYYOWDHMCMHJUQGNPMSHM
IN WAR THE MORAL IS TO THE PHYSICAL AS THREE IS TO ONE
hill
hill
polygraphic
{ "a": 7, "b": 5, "c": 2, "d": 3 }
advanced
en
42
42
cipher_museum
0.2
public
null
null
hill-v2-0439
KMEYLXLTKQSOTCGTEBKEGRUGYXXKIZILEHMRKEGRUGYXXKMWANDNVBTFKQRVBVIMTCWDQYSY
KMEYLXLTKQSOTCGTEBKEGRUGYXXKIZILEHMRKEGRUGYXXKMWANDNVBTFKQRVBVIMTCWDQYSY
ASK WHAT YOU CAN DO FOR YOUR COUNTRY NOT WHAT YOUR COUNTRY CAN DO FOR YOU TODAY AND ALWAYS
hill
hill
polygraphic
{ "a": 9, "b": 2, "c": 7, "d": 5 }
advanced
en
72
72
cipher_museum
2.0
public
null
null
affine-v3-1157
QUV NFZQKV LZ ZHIIJHSEVE
QUV NFZQKV LZ ZHIIJHSEVE
THE CASTLE IS SURROUNDED
affine
affine
substitution
{ "a": 17, "b": 5 }
beginner
en
21
24
cipher_museum
2.0
public
null
null
m94-048
HJFKJEHQFOPKFNVFNEASGPVCUVBDUZZLNOXGVKTGTISJPSZFERFUOSEN
HJFKJEHQFOPKFNVFNEASGPVCUVBDUZZLNOXGVKTGTISJPSZFERFUOSEN
IF YOU KNOW BOTH YOURSELF AND YOUR ENEMY YOU NEED NOT FEAR THE RESULT
m94
m94
machine
{ "type": "seed", "value": "M94" }
expert
en
56
56
cipher_museum
0.2
public
null
null
beaufort-v3-0521
YHUMURMNWERWGLXHKL
YHUMURMNWERWGLXHKL
THE ORACLE HAS SPOKEN
beaufort
beaufort
polyalphabetic
{ "type": "keyword", "value": "ROYAL" }
intermediate
en
18
18
cipher_museum
2.0
public
null
null
slidex-v2-0103
VHASKAYRXPCKQRYROVYPXEAXPDRJSEKGICCYREVUQSUNJKXPZURDEPMLAMPUDUXLFLBUYCITGLZUXVUO
VHASKAYRXPCKQRYROVYPXEAXPDRJSEKGICCYREVUQSUNJKXPZURDEPMLAMPUDUXLFLBUYCITGLZUXVUO
THE AMBASSADOR HAS RECEIVED OUR MOST URGENT DISPATCHES AND AWAITS INSTRUCTIONS FROM LONDON HQ
slidex
slidex
transposition
{ "type": "keyword", "value": "BLETCHLEY" }
advanced
en
80
80
cipher_museum
2.0
public
null
null
cda-0008537
WDGG NDKD NGAD CBUX CUIQ MGMX GZKT AWWR TCBU XCUI EUSE HSXQ FLUH LRGE NVXY JAFJ GFDN UGPK SWFC QLSA DGNA SGGR AMXA UHMY XXKX AGRL RTAY RSKH ANWP UXMK QNWG LKWT GKTN WIQX BUVA LHAL RJUT WTCC YRWK X
WDGG NDKD NGAD CBUX CUIQ MGMX GZKT AWWR TCBU XCUI EUSE HSXQ FLUH LRGE NVXY JAFJ GFDN UGPK SWFC QLSA DGNA SGGR AMXA UHMY XXKX AGRL RTAY RSKH ANWP UXMK QNWG LKWT GKTN WIQX BUVA LHAL RJUT WTCC YRWK X
OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS EVERY SYSTEM NEEDS AN HONEST THREAT MODEL OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION
beaufort
beaufort
null
{ "key": "KEY" }
hard
en
157
157
synthetic_educational
null
null
[]
purple-001
KKWRXWAYOHVW
KKWRXWAYOHVW
ATTACK AT DAWN
purple
purple
machine
{ "type": "seed", "value": "PURPLE" }
expert
en
12
12
cipher_museum
0.2
public
null
null
kl7-v2-0472
FBOFTCTHUIPKDYYIUXRRQROKCGRUPXFICXRQFHVNKESAMQZKQXJZWAZUZSUPAZYKFMFXHVLJIJOAWPXBJWHZ
FBOFTCTHUIPKDYYIUXRRQROKCGRUPXFICXRQFHVNKESAMQZKQXJZWAZUZSUPAZYKFMFXHVLJIJOAWPXBJWHZ
CODED TRANSMISSION INDICATES ENEMY FORCES ASSEMBLING ALONG THE BORDER WITH HEAVY ARTILLERY UNITS
kl7
kl7
machine
{ "type": "seed", "value": "ALLIANCE" }
expert
en
84
84
cipher_museum
2.0
public
null
null
bifid-v3-0484
IODUUHGPHPHNIXCE
IODUUHGPHPHNIXCE
RENDER UNTO CAESAR
bifid
bifid
fractionation
{ "type": "keyword", "value": "TRIUMPH" }
advanced
en
16
16
cipher_museum
2.0
public
null
null
red-type-a-v2-0155
NYMOUDVUZXYPCLXACFUDA
NYMOUDVUZXYPCLXACFUDA
PATIENCE BRINGS VICTORY
red_type_a
red_type_a
machine
{ "type": "keyword", "value": "YAMATO" }
advanced
en
21
21
cipher_museum
2.0
public
null
null
sigaba-v2-0223
NYWCITLQQTREQYLTGSILPQVRPYJCMEKVDRRKXNSJAHBRZVLCJDAHUWFDYNQEYVQPOGORSSHVDASZILWZWEUX
NYWCITLQQTREQYLTGSILPQVRPYJCMEKVDRRKXNSJAHBRZVLCJDAHUWFDYNQEYVQPOGORSSHVDASZILWZWEUX
VENONA REVEALED THAT NUMEROUS SOVIET AGENTS HAD PENETRATED THE HIGHEST LEVELS OF THE US GOVERNMENT
sigaba
sigaba
machine
{ "type": "seed", "value": "ARMY" }
expert
en
84
84
cipher_museum
2.0
public
null
null
confederate-vigenere-v2-0128
TITATOTHDCUANSQHJBTVKSQ
TITATOTHDCUANSQHJBTVKSQ
CARTHAGE MUST BE DESTROYED
confederate_vigenere
confederate_vigenere
polyalphabetic
{ "type": "keyword", "value": "RICHMOND" }
intermediate
en
23
23
cipher_museum
2.0
public
null
null
gronsfeld-163
ULFUWJGLFTPAOJQYNVQRTSWITULFPCACESIOIBVVIISMXFV
ULFUWJGLFTPAOJQYNVQRTSWITULFPCACESIOIBVVIISMXFV
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG NEAR THE RIVER
gronsfeld
gronsfeld
polyalphabetic
{ "type": "numeric", "value": "14142" }
intermediate
en
47
47
cipher_museum
0.2
public
null
null
hill-v3-0143
OXWSMZJFUUHVFEFPDENMRJ
OXWSMZJFUUHVFEFPDENMRJ
THE EXPERIMENT CONFIRMS
hill
hill
polygraphic
{ "a": 5, "b": 7, "c": 2, "d": 9 }
advanced
en
22
22
cipher_museum
2.0
public
null
null
chaocipher-v3-0339
NYTMJBJKQPVCRONULIVX
NYTMJBJKQPVCRONULIVX
THE COMPASS POINTS TRUE
chaocipher
chaocipher
machine
{ "type": "keyword", "value": "JUSTICE" }
advanced
en
20
20
cipher_museum
2.0
public
null
null
monoalphabetic-v2-0344
YLUQ JESSELK EN YLU ACLLSO TL DAAOMT ET ES TL OXTQDAT TCO DBOKT NQLJ ROCEKG OKOJY IEKOS TLKEBCT
YLUQ JESSELK EN YLU ACLLSO TL DAAOMT ET ES TL OXTQDAT TCO DBOKT NQLJ ROCEKG OKOJY IEKOS TLKEBCT
YOUR MISSION IF YOU CHOOSE TO ACCEPT IT IS TO EXTRACT THE AGENT FROM BEHIND ENEMY LINES TONIGHT
monoalphabetic
monoalphabetic
substitution
{ "type": "keyword", "value": "DRAGON" }
beginner
en
78
95
cipher_museum
2.0
public
null
null
alberti-disk-v3-0092
AUERTJMGFEKAMNUPTSBKVLTCHOYBQCGSHAMIXARSJDDHDTKYWCYKDPXDYLUDLZUUEXSMHBNFFWCSXNOENMUZRPDWBWWALXYSSSDCLWDLUEIATMGXQKNTUMAHGDASOYKGTHGPUBSCQIHGWXRXFPLILOZCKZVOPVPDJVJUZWD
AUERTJMGFEKAMNUPTSBKVLTCHOYBQCGSHAMIXARSJDDHDTKYWCYKDPXDYLUDLZUUEXSMHBNFFWCSXNOENMUZRPDWBWWALXYSSSDCLWDLUEIATMGXQKNTUMAHGDASOYKGTHGPUBSCQIHGWXRXFPLILOZCKZVOPVPDJVJUZWD
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
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 4 }
expert
en
167
167
cipher_museum
2.0
public
null
null
autokey-v2-0119
IHPHKWMVVFWXVFPNHTNFENBGLPGRBDEPFPBEWPJPEXWOXAKWIJAVASOAJCPECEPRWLGSRZAVPJIWRHIVQFYKLZQWMJCNXVKVCNBWQGFTIUYQOGNIYAPQCNIEGZPWEKMVNICKGTGTPRJNLTUADDGNUDSRSNURDFSKLJHTZZXNWENZXLK
IHPHKWMVVFWXVFPNHTNFENBGLPGRBDEPFPBEWPJPEXWOXAKWIJAVASOAJCPECEPRWLGSRZAVPJIWRHIVQFYKLZQWMJCNXVKVCNBWQGFTIUYQOGNIYAPQCNIEGZPWEKMVNICKGTGTPRJNLTUADDGNUDSRSNURDFSKLJHTZZXNWENZXLK
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
autokey
autokey
polyalphabetic
{ "type": "keyword", "value": "PALACE" }
intermediate
en
175
175
cipher_museum
2.0
public
null
null
cda-0002163
GDTYC JCNXV KFCWW WMALS QWSGA VEISM FVUIL TZOIJ TNRCN UPRVC XESMV SPATV ISRQC AGTZT HGQXI QUESX TGYEL XIPRR MEXCC GUHMI GVRYC GXFRR GGLGU LMKLS WDWBF YCLSV QIFLL LGZUK DGELL UAXJE CUBTH GYOAC MQKAY LESFY IVLCO UKBXP E
GDTYC JCNXV KFCWW WMALS QWSGA VEISM FVUIL TZOIJ TNRCN UPRVC XESMV SPATV ISRQC AGTZT HGQXI QUESX TGYEL XIPRR MEXCC GUHMI GVRYC GXFRR GGLGU LMKLS WDWBF YCLSV QIFLL LGZUK DGELL UAXJE CUBTH GYOAC MQKAY LESFY IVLCO UKBXP E
EVERY SYSTEM NEEDS AN HONEST THREAT MODEL AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS
autokey
autokey
null
{ "primer": "CIPHER" }
hard
en
181
181
synthetic_educational
null
null
[ "running_key_analysis", "index_of_coincidence" ]
Autokey: Vigenère where the plaintext extends the key — harder to Kasiski-attack.
cda-0016023
TWOSQ UAREX IPHEX ENCRY PTSDI GRAPX SWITH TWOPO LYBIZ SALPX ABETS ERROR CORRX CTION ANDDZ TECTZ ONARE FUNDX MENTA LTOSE CURES YSTEZ SDONO TCONX USEOZ FUSCA TIONW ITHEN CRYPT IONXZ
TWOSQ UAREX IPHEX ENCRY PTSDI GRAPX SWITH TWOPO LYBIZ SALPX ABETS ERROR CORRX CTION ANDDZ TECTZ ONARE FUNDX MENTA LTOSE CURES YSTEZ SDONO TCONX USEOZ FUSCA TIONW ITHEN CRYPT IONXZ
TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION
commercial_code
commercial_code
null
{}
hard
en
150
150
synthetic_educational
null
null
[ "codebook_frequency", "five_letter_group_analysis" ]
Commercial code: five-letter groups from a codebook, often ending in X or Z.
beaufort-v2-0632
POHHERIUORZVXWINWFJXTKV
POHHERIUORZVXWINWFJXTKV
CARTHAGE MUST BE DESTROYED
beaufort
beaufort
polyalphabetic
{ "type": "keyword", "value": "ROYAL" }
intermediate
en
23
23
cipher_museum
2.0
public
null
null
enigma-v2-0149
QNCTJFDSBVYQZIOZAP
QNCTJFDSBVYQZIOZAP
LOOSE LIPS SINK SHIPS
enigma
enigma
machine
{ "type": "rotor_start", "value": "DEF" }
expert
en
18
18
cipher_museum
2.0
public
null
null
cda-0012897
66 36 82 11 82 66 82 52 66 50 95 82 61 66 59 11 50 82 61 65 68 66 66 82 80 29 61 20 82 76 69 80 82 77 68 55 50 29 25 52 57 68 50 77 61 61 82 52 59 80 50 66 43 52 57 68 50 77 61 61 36 69 59 57 11 20 82 66 82 61 66 82 11 59 29 11 82 80 61 52 80 59 66 50 29 43 52 68 80 82 76 59 57 57 43
66 36 82 11 82 66 82 52 66 50 95 82 61 66 59 11 50 82 61 65 68 66 66 82 80 29 61 20 82 76 69 80 82 77 68 55 50 29 25 52 57 68 50 77 61 61 82 52 59 80 50 66 43 52 57 68 50 77 61 61 36 69 59 57 11 20 82 66 82 61 66 82 11 59 29 11 82 80 61 52 80 59 66 50 29 43 52 68 80 82 76 59 57 57 43
THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY CAREFULLY
wallis_cipher
wallis_cipher
null
{}
hard
en
95
95
synthetic_educational
null
null
[ "number_substitution_decode", "frequency_analysis" ]
Wallis cipher: each letter mapped to a unique two-digit number from a fixed table.
two-square-v2-0358
SIGNOICLDRUIHH
SIGNOICLDRUIHH
SIGNAL FIRES LIT
two_square
two_square
polygraphic
{ "key1": "DRAGON", "key2": "THUNDER" }
advanced
en
14
14
cipher_museum
2.0
public
null
null
columnar-transposition-201
DCHERTGURSIEBSDEIE
DCHERTGURSIEBSDEIE
THE BRIDGE IS SECURED
columnar_transposition
columnar_transposition
transposition
{ "type": "keyword", "value": "KEYWORD" }
intermediate
en
18
18
cipher_museum
0.2
public
null
null
cda-0011937
65 68 66 66 82 80 29 89 69 80 11 61 36 82 57 65 20 80 82 68 55 77 69 29 69 68 57 65 36 68 20 82 66 50 52 61 59 20 61 66 50 66 59 66 50 69 29
65 68 66 66 82 80 29 89 69 80 11 61 36 82 57 65 20 80 82 68 55 77 69 29 69 68 57 65 36 68 20 82 66 50 52 61 59 20 61 66 50 66 59 66 50 69 29
PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION
wallis_cipher
wallis_cipher
null
{}
medium
en
47
47
synthetic_educational
null
null
[ "number_substitution_decode", "frequency_analysis" ]
Wallis cipher: each letter mapped to a unique two-digit number from a fixed table.
kryptos-v2-0470
BFHCWJZFVXRQGUEYYVDSZLEXIHDTCEBFQAWEMLFSBYDEANFHTZEOCDNRLUBRIFFLZUZQQTFEXRQHAD
BFHCWJZFVXRQGUEYYVDSZLEXIHDTCEBFQAWEMLFSBYDEANFHTZEOCDNRLUBRIFFLZUZQQTFEXRQHAD
YOUR MISSION IF YOU CHOOSE TO ACCEPT IT IS TO EXTRACT THE AGENT FROM BEHIND ENEMY LINES TONIGHT
kryptos
kryptos
polyalphabetic
{ "type": "keyword", "value": "SANBORN" }
advanced
en
78
78
cipher_museum
2.0
public
null
null
cda-0018500
.... .... .. ... . ..... .. .... ... ... . .... . ..... ..... ... ... .... .. . . ... ... .... .. .... ... ... . ... .. .... . .... . ..... ... ... . ... . ..... .. .... .... ... . . .... ..... .... ... . ..... .. . .... ..... ... . . ... ... . .... ..... . ..... .... .... ..... .. ....
.... .... .. ... . ..... .. .... ... ... . .... . ..... ..... ... ... .... .. . . ... ... .... .. .... ... ... . ... .. .... . .... . ..... ... ... . ... . ..... .. .... .... ... . . .... ..... .... ... . ..... .. . .... ..... ... . . ... ... . .... ..... . ..... .... .... ..... .. ....
THE INDEX OF COINCIDENCE IS A USEFUL CLUE TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION
tap_code
tap_code
null
{}
hard
en
176
176
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.
four-square-v2-0018
AVCCRNXSDGITMV
AVCCRNXSDGITMV
AWAIT MY SIGNAL
four_square
four_square
polygraphic
{ "key1": "PALACE", "key2": "BATTLE" }
advanced
en
14
14
cipher_museum
2.0
public
null
null
cda-0016016
12.50.2 9.9.15 12.3.14 8.50.4 14.33.1 8.44.4 6.24.13 7.39.4 7.23.14 1.12.13 15.11.1 4.28.2 17.26.1 6.49.2 16.4.9 5.1.5 20.5.14 14.27.15 13.41.2 14.15.4 16.40.12 11.47.9 11.9.2 5.31.1 7.14.13 15.37.7 20.40.10 19.45.10 5.18.9 8.17.8 12.47.14 19.48.11 11.8.13 2.12.2 8.2.8 17.9.9 2.9.12 2.47.1 3.20.3 9.17.7 5.23.10 12.11.1...
12.50.2 9.9.15 12.3.14 8.50.4 14.33.1 8.44.4 6.24.13 7.39.4 7.23.14 1.12.13 15.11.1 4.28.2 17.26.1 6.49.2 16.4.9 5.1.5 20.5.14 14.27.15 13.41.2 14.15.4 16.40.12 11.47.9 11.9.2 5.31.1 7.14.13 15.37.7 20.40.10 19.45.10 5.18.9 8.17.8 12.47.14 19.48.11 11.8.13 2.12.2 8.2.8 17.9.9 2.9.12 2.47.1 3.20.3 9.17.7 5.23.10 12.11.1...
THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS
book_cipher
book_cipher
null
{}
hard
en
158
158
synthetic_educational
null
null
[ "book_cipher_attack", "triple_index_search" ]
Book cipher: coordinates (page.line.word) referencing a shared document.
alberti-disk-v2-0787
UKYMGNKNTAKA
UKYMGNKNTAKA
VENI VIDI VICI
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 16 }
expert
en
12
12
cipher_museum
2.0
public
null
null
solitaire-v2-0115
QYYLVJASUTVOBAIMGTJKBNKFDRYKZOILWKCCJTOFBKNXEBDKEJTXKARRAARKZKODJSLYNNTZOIOWKCAEKKPYTGAMHRVWONSCUXDVLCCXRKBOYBFEDACSVVXMNXMYURDAXRNDAAUYJOLUWOHQOWEAXRXNRIFOLEFET
QYYLVJASUTVOBAIMGTJKBNKFDRYKZOILWKCCJTOFBKNXEBDKEJTXKARRAARKZKODJSLYNNTZOIOWKCAEKKPYTGAMHRVWONSCUXDVLCCXRKBOYBFEDACSVVXMNXMYURDAXRNDAAUYJOLUWOHQOWEAXRXNRIFOLEFET
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
solitaire
solitaire
stream
{ "type": "none", "value": null }
expert
en
161
161
cipher_museum
2.0
public
null
null
cda-0014551
04796 0708 6018 1634 05681 6988 0330 00683 3851 01577 01598 06967 2925 1312 01598 04398 0946 1589 0966 4764 04093 01599 5979 0721 1615 01937 04740 5695 1579 01032 04726 4459 1964 02881 1336 01631 04465 00966 01668 01659 5737 05687 4747 5726 00949 4805 05662 05744 01575 0965 6339 02906 04765 4478 00332 4436 01288 1287 1...
04796 0708 6018 1634 05681 6988 0330 00683 3851 01577 01598 06967 2925 1312 01598 04398 0946 1589 0966 4764 04093 01599 5979 0721 1615 01937 04740 5695 1579 01032 04726 4459 1964 02881 1336 01631 04465 00966 01668 01659 5737 05687 4747 5726 00949 4805 05662 05744 01575 0965 6339 02906 04765 4478 00332 4436 01288 1287 1...
OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS
zimmermann
zimmermann
null
{}
hard
en
95
95
synthetic_educational
null
null
[ "codebook_frequency", "number_group_analysis" ]
Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher.
enigma-v3-0094
BZUHRFZIIAVHJVELQFIUALGNGCCOCJTZMOJSBEKHBZKWKAPOQXZYKJCRKBPBKGPNHBRSLWYLDYGEEECIEFHJYDEHRZQGYHAOLXSCXFSXPZZGBIKMYEIZXYDHZCKKDBIJDPBYSDHRNDXHVPKSLEWZXTTNILXAXQQUN
BZUHRFZIIAVHJVELQFIUALGNGCCOCJTZMOJSBEKHBZKWKAPOQXZYKJCRKBPBKGPNHBRSLWYLDYGEEECIEFHJYDEHRZQGYHAOLXSCXFSXPZZGBIKMYEIZXYDHZCKKDBIJDPBYSDHRNDXHVPKSLEWZXTTNILXAXQQUN
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
enigma
enigma
machine
{ "type": "rotor_start", "value": "ABC" }
expert
en
161
161
cipher_museum
2.0
public
null
null
caesar-fr-043
YRF UBZZRF ANVFFRAG RG QRZRHERAG YVOERF RG RTNHK RA QEBVGF
YRF UBZZRF ANVFFRAG RG QRZRHERAG YVOERF RG RTNHK RA QEBVGF
LES HOMMES NAISSENT ET DEMEURENT LIBRES ET EGAUX EN DROITS
caesar
caesar
substitution
{ "type": "shift", "value": 13 }
beginner
fr
49
58
cipher_museum
0.2
public
null
null
autokey-v2-0366
EPBXFGRALFBFFMKEDWWBTQUYFDRNGBEPCIEHMSSVLFFICHVEVFXGNRWLWAZTUXRLXLWHHQVZBWYGKJMBTJEWVVWOYDWICVOFKSEGHSOAEHDRSJGLAIGEVLJXBXPTVFRBKLTVGGTNECAAMXKWNNBXWVZTLEFWXYEP
EPBXFGRALFBFFMKEDWWBTQUYFDRNGBEPCIEHMSSVLFFICHVEVFXGNRWLWAZTUXRLXLWHHQVZBWYGKJMBTJEWVVWOYDWICVOFKSEGHSOAEHDRSJGLAIGEVLJXBXPTVFRBKLTVGGTNECAAMXKWNNBXWVZTLEFWXYEP
THAT ON THE FIRST DAY OF JANUARY IN THE YEAR OF OUR LORD ONE THOUSAND EIGHT HUNDRED AND SIXTY THREE ALL PERSONS HELD AS SLAVES WITHIN ANY STATE IN REBELLION AGAINST THE UNITED STATES SHALL BE FREE
autokey
autokey
polyalphabetic
{ "type": "keyword", "value": "LIBERTY" }
intermediate
en
160
160
cipher_museum
2.0
public
null
null
wheatstone-v3-0265
SLEKNEKESYBKTRAYLKTSDANPLKSEAPLNDUJBKGKLWHATCAIBHHQSLABIDCAKAPBSELKBKAW
SLEKNEKESYBKTRAYLKTSDANPLKSEAPLNDUJBKGKLWHATCAIBHHQSLABIDCAKAPBSELKBKAW
TO INFINITY AND BEYOND THE FRONTIER OF HUMAN KNOWLEDGE CALLS TO EACH GENERATION ANEW
wheatstone
wheatstone
polygraphic
{ "type": "keyword", "value": "BRITAIN" }
advanced
en
71
71
cipher_museum
2.0
public
null
null
porta-043
EOZHDXOZVJFFLRMDRLQAGMBZICWQNUECUMSLYVICWQCPANA
EOZHDXOZVJFFLRMDRLQAGMBZICWQNUECUMSLYVICWQCPANA
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG NEAR THE RIVER
porta
porta
polyalphabetic
{ "type": "keyword", "value": "FORTIFY" }
intermediate
en
47
47
cipher_museum
0.2
public
null
null
kryha-v2-0140
AGEINLQYPBTDAH
AGEINLQYPBTDAH
PRESS THE ATTACK
kryha
kryha
machine
{ "type": "keyword", "value": "VIENNA" }
expert
en
14
14
cipher_museum
2.0
public
null
null
two-square-v2-0067
INUGEBCHINNINGHNDCUAATAHUGEHEAZBKLKGUGEELQUGCKDDLQKNCURXCQUPONUGLHPDEOFDEELV
INUGEBCHINNINGHNDCUAATAHUGEHEAZBKLKGUGEELQUGCKDDLQKNCURXCQUPONUGLHPDEOFDEELV
IN THE BEGINNING GOD CREATED THE HEAVEN AND THE EARTH AND DARKNESS WAS UPON THE FACE OF DEEP
two_square
two_square
polygraphic
{ "key1": "PALACE", "key2": "BATTLE" }
advanced
en
76
76
cipher_museum
2.0
public
null
null
rot13-059
GUR NEG BS JNE VF BS IVGNY VZCBEGNAPR GB GUR FGNGR VG VF N ZNGGRE BS YVSR NAQ QRNGU N EBNQ RVGURE GB FNSRGL BE GB EHVA URAPR VG VF N FHOWRPG BS VADHVEL JUVPU PNA BA AB NPPBHAG OR ARTYRPGRQ
GUR NEG BS JNE VF BS IVGNY VZCBEGNAPR GB GUR FGNGR VG VF N ZNGGRE BS YVSR NAQ QRNGU N EBNQ RVGURE GB FNSRGL BE GB EHVA URAPR VG VF N FHOWRPG BS VADHVEL JUVPU PNA BA AB NPPBHAG OR ARTYRPGRQ
THE ART OF WAR IS OF VITAL IMPORTANCE TO THE STATE IT IS A MATTER OF LIFE AND DEATH A ROAD EITHER TO SAFETY OR TO RUIN HENCE IT IS A SUBJECT OF INQUIRY WHICH CAN ON NO ACCOUNT BE NEGLECTED
rot13
rot13
substitution
{ "type": "none", "value": null }
beginner
en
148
188
cipher_museum
0.2
public
null
null
chinese-telegraph-v3-0260
4361 5060 4998 5060 5563 4550 5060 4550 4427 4998 5563 4871 4427 4680 4998 5563 5060 5563 4614 4154 5563 4550 5060 5060 4361 4998 4680 4550 4614 5563 5060 4871 4361 4154 4550 4427 5488 4614 5060 5645 4871 4361 4216 5645 5397 4998 4154 4998 4361 5397 4154 5741 4427 4154 5563 4298 4871 5060 5488 4427 5060 4489 4361 4154 ...
4361 5060 4998 5060 5563 4550 5060 4550 4427 4998 5563 4871 4427 4680 4998 5563 5060 5563 4614 4154 5563 4550 5060 5060 4361 4998 4680 4550 4614 5563 5060 4871 4361 4154 4550 4427 5488 4614 5060 5645 4871 4361 4216 5645 5397 4998 4154 4998 4361 5397 4154 5741 4427 4154 5563 4298 4871 5060 5488 4427 5060 4489 4361 4154 ...
DO NOT GO GENTLE INTO THAT GOOD NIGHT OLD AGE SHOULD BURN AND RAVE AT CLOSE OF DAY RAGE RAGE
chinese_telegraph
chinese_telegraph
codebook
{ "type": "additive", "value": "14142" }
expert
en
292
364
cipher_museum
2.0
public
null
null
diana-249
MTTRBCTFVCKMSYRSASMJF
MTTRBCTFVCKMSYRSASMJF
SUPPLY LINE COMPROMISED
diana
diana
polyalphabetic
{ "type": "keyword", "value": "ENIGMA" }
intermediate
en
21
21
cipher_museum
0.2
public
null
null
joseon-yeokhak-v3-0041
BPMBMTMOZIXPBZIVAUQBA
BPMBMTMOZIXPBZIVAUQBA
THE TELEGRAPH TRANSMITS
joseon_yeokhak
joseon_yeokhak
substitution
{ "type": "keyword", "value": "SEOUL" }
beginner
en
21
21
cipher_museum
2.0
public
null
null
autokey-v2-0709
GRBODTPFWKCKXMFEEBAXPNVTNHKPOSSUTNIAFFIVZEZDBBUUHNUIVLGYSRRGMVZSNXPXJINQITVULRV
GRBODTPFWKCKXMFEEBAXPNVTNHKPOSSUTNIAFFIVZEZDBBUUHNUIVLGYSRRGMVZSNXPXJINQITVULRV
NATURE IS WRITTEN IN THE LANGUAGE OF MATHEMATICS AND ITS CHARACTERS ARE TRIANGLES AND CIRCLES
autokey
autokey
polyalphabetic
{ "type": "keyword", "value": "TRIUMPH" }
intermediate
en
79
79
cipher_museum
2.0
public
null
null
four-square-v2-0497
FARDSMOUIPBLBPYGDQGSXY
FARDSMOUIPBLBPYGDQGSXY
PATIENCE BRINGS VICTORY
four_square
four_square
polygraphic
{ "key1": "WISDOM", "key2": "COURAGE" }
advanced
en
22
22
cipher_museum
2.0
public
null
null
cda-0012287
... . -.-. ..- .-. .. - -.-- / -.-. .-.. .- .. -- ... / ... .... --- ..- .-.. -.. / -... . / - . ... - . -.. / ..- -. -.. . .-. / ... -.-. .-. ..- - .. -. -.-- / -.-. --- .-.. ..- -- -. .- .-. / - .-. .- -. ... .--. --- ... .. - .. --- -. / .-. . .- -.. ... / -.-. --- .-.. ..- -- -. ... / .. -. / -.- . -.-- / --- .-. -...
... . -.-. ..- .-. .. - -.-- / -.-. .-.. .- .. -- ... / ... .... --- ..- .-.. -.. / -... . / - . ... - . -.. / ..- -. -.. . .-. / ... -.-. .-. ..- - .. -. -.-- / -.-. --- .-.. ..- -- -. .- .-. / - .-. .- -. ... .--. --- ... .. - .. --- -. / .-. . .- -.. ... / -.-. --- .-.. ..- -- -. ... / .. -. / -.- . -.-- / --- .-. -...
SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER
morse_code
morse_code
null
{}
hard
en
84
84
synthetic_educational
null
null
[ "symbol_decode", "frequency_analysis" ]
Morse code: dots and dashes; word-separated by / symbol.
venona-pad-reuse-v3-0197
5MGK2QLMMTACCMYPTX7S4ZMKBVGQIMMXCUYYIKP5XVLZFGAXYYMCABHYA3GECA7PQBVVXVIGXASSAYPFMARJPISKAFQYPDAAAYDFVJRYQPFBF2XJDOGXDA7L3BI766YPFWVTJPDJBVYQKMQXJTVI3GA6HJZ4JX7W7LHOM4XKZ
5MGK2QLMMTACCMYPTX7S4ZMKBVGQIMMXCUYYIKP5XVLZFGAXYYMCABHYA3GECA7PQBVVXVIGXASSAYPFMARJPISKAFQYPDAAAYDFVJRYQPFBF2XJDOGXDA7L3BI766YPFWVTJPDJBVYQKMQXJTVI3GA6HJZ4JX7W7LHOM4XKZ
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
venona_pad_reuse
venona_pad_reuse
stream
{ "type": "keyword", "value": "LIBERTY" }
expert
en
169
169
cipher_museum
2.0
public
null
null
caesar-527
QZID QDYD QDXD D XVHZ D NVR D XJILPZMZY VGG DI V NDIBGZ WVOOGZ
QZID QDYD QDXD D XVHZ D NVR D XJILPZMZY VGG DI V NDIBGZ WVOOGZ
VENI VIDI VICI I CAME I SAW I CONQUERED ALL IN A SINGLE BATTLE
caesar
caesar
substitution
{ "type": "shift", "value": 21 }
beginner
en
49
62
cipher_museum
0.2
public
null
null
cda-0006789
DOASE USTSE WEKPN SSPIS BOREA SEREP WXIRR BXIPP NRAEN XEEMN AQTIL EOOWD SATAR OEISG KKOSF RTICS LEEHU BCBTR RHTQU ARDLE DENRX TRAHA RPUMM WNYGU TOLOY OLXER HRIRS CSRES ORCOH TAPRE TTBEK NIOTX CEUIY SUECE TITEI CWUUA YBEPH DFOPL AH
DOASE USTSE WEKPN SSPIS BOREA SEREP WXIRR BXIPP NRAEN XEEMN AQTIL EOOWD SATAR OEISG KKOSF RTICS LEEHU BCBTR RHTQU ARDLE DENRX TRAHA RPUMM WNYGU TOLOY OLXER HRIRS CSRES ORCOH TAPRE TTBEK NIOTX CEUIY SUECE TITEI CWUUA YBEPH DFOPL AH
ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN 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
double_transposition
double_transposition
null
{ "key1": "JUSTICE", "key2": "SIGNAL" }
hard
en
192
192
synthetic_educational
null
null
[ "key_length_search", "anagram_recovery" ]
Double columnar transposition: apply columnar twice for stronger security.
caesar-v3-0596
FQJC MXNB RC YAXORC J VJW CX PJRW CQN FQXUN FXAUM JWM HNC UXBN QRB XFW RVVXACJU BXDU OXANENA
FQJC MXNB RC YAXORC J VJW CX PJRW CQN FQXUN FXAUM JWM HNC UXBN QRB XFW RVVXACJU BXDU OXANENA
WHAT DOES IT PROFIT A MAN TO GAIN THE WHOLE WORLD AND YET LOSE HIS OWN IMMORTAL SOUL FOREVER
caesar
caesar
substitution
{ "type": "shift", "value": 9 }
beginner
en
74
92
cipher_museum
2.0
public
null
null
beaufort-v3-0320
OTNJKHROWOXMDNDI
OTNJKHROWOXMDNDI
THE SENATE DECREES
beaufort
beaufort
polyalphabetic
{ "type": "keyword", "value": "HARBOUR" }
intermediate
en
16
16
cipher_museum
2.0
public
null
null
chaocipher-v2-0046
HVKCTPESFBSMEWGZUCCCVYIFLRMOSDVZHXSEEBTNKQWZWPKZCJXRPADHEZNHPUFU
HVKCTPESFBSMEWGZUCCCVYIFLRMOSDVZHXSEEBTNKQWZWPKZCJXRPADHEZNHPUFU
WHAT IS IN A NAME THAT WHICH WE CALL A ROSE BY ANY OTHER NAME WOULD SMELL AS SWEET
chaocipher
chaocipher
machine
{ "type": "keyword", "value": "PALACE" }
advanced
en
64
64
cipher_museum
2.0
public
null
null
stager-route-220
WLOEAHVREEANANFESITCDLRNDSLWHHGHAHEEENUERRESSBTL
WLOEAHVREEANANFESITCDLRNDSLWHHGHAHEEENUERRESSBTL
WE SHALL FIGHT ON THE BEACHES AND WE SHALL NEVER SURRENDER
stager_route
stager_route
transposition
{ "type": "integer", "value": 6 }
expert
en
48
48
cipher_museum
0.2
public
null
null
bifid-198
DHEURMLVFAN
DHEURMLVFAN
RALLY AT DAWN
bifid
bifid
fractionation
{ "type": "keyword", "value": "KEYWORD" }
advanced
en
11
11
cipher_museum
0.2
public
null
null
sigaba-v2-0316
GTGLVZIZYABWOOUCUIQDGTEDKXAQBLCJYXRLYZGBZLRLOLXBNDQTXFOTPOPEWHZMASNHFEWDYFL
GTGLVZIZYABWOOUCUIQDGTEDKXAQBLCJYXRLYZGBZLRLOLXBNDQTXFOTPOPEWHZMASNHFEWDYFL
TRUST IN THE LORD WITH ALL THINE HEART AND LEAN NOT UNTO THINE OWN UNDERSTANDING IN ALL WAYS
sigaba
sigaba
machine
{ "type": "seed", "value": "FREEDOM" }
expert
en
75
75
cipher_museum
2.0
public
null
null
cda-0020437
OPENS OURCE TOOLZ ALLOZ INDEP ENDEN TVERI FICAZ IONTH EARCH ITECT URESX OULDM AKEMI SUSEH ARDER
OPENS OURCE TOOLZ ALLOZ INDEP ENDEN TVERI FICAZ IONTH EARCH ITECT URESX OULDM AKEMI SUSEH ARDER
OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION THE ARCHITECTURE SHOULD MAKE MISUSE HARDER
commercial_code
commercial_code
null
{}
hard
en
80
80
synthetic_educational
null
null
[ "codebook_frequency", "five_letter_group_analysis" ]
Commercial code: five-letter groups from a codebook, often ending in X or Z.
adfgvx-v2-0162
AXDXAVADDAVAAGFGAAAAFDGFAAXD
AXDXAVADDAVAAGFGAAAAFDGFAAXD
LIBERTY OR DEATH
adfgvx
adfgvx
fractionation
{ "polybius": "LIBERTY", "columnar": "FREEDOM" }
advanced
en
28
28
cipher_museum
2.0
public
null
null