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
one-time-pad-v3-0152
JDIJICYLCULAJMZPBDSDRNOJZMJAWGXCXTWBILLSZONEYHSGMTRQYJWKXGHLSBOFVYXHCOOSEKN
JDIJICYLCULAJMZPBDSDRNOJZMJAWGXCXTWBILLSZONEYHSGMTRQYJWKXGHLSBOFVYXHCOOSEKN
THE SPEED OF LIGHT IS THE ULTIMATE SPEED LIMIT IN THE UNIVERSE EINSTEIN DEMONSTRATED THIS
one_time_pad
one_time_pad
stream
{ "type": "pad", "value": "QWERTY (repeating)" }
expert
en
75
75
cipher_museum
2.0
public
null
null
cda-0004091
TICO WSSX IMYV VKMU BWVF GCTD WJKG PBJM MGRQ HVGR LSWW KKQT EX
TICO WSSX IMYV VKMU BWVF GCTD WJKG PBJM MGRQ HVGR LSWW KKQT EX
BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF
autokey
autokey
null
{ "primer": "SECURE" }
medium
en
50
50
synthetic_educational
null
null
[ "running_key_analysis", "index_of_coincidence" ]
Autokey: Vigenère where the plaintext extends the key — harder to Kasiski-attack.
cda-0020666
┌· ┘· X· K L r Γ· ┐· r· L ┌· X ┌· L ⌐ Γ ⌐ ¬· ┌· Γ· Γ Γ· ─ ⌐ ┐· ┌· L X r ┌· Γ· ¬ L Γ ¬· L ┘· ┌ L K ┌· Γ· r ┐· ⌐ K K L ┌· ─
┌· ┘· X· K L r Γ· ┐· r· L ┌· X ┌· L ⌐ Γ ⌐ ¬· ┌· Γ· Γ Γ· ─ ⌐ ┐· ┌· L X r ┌· Γ· ¬ L Γ ¬· L ┘· ┌ L K ┌· Γ· r ┐· ⌐ K K L ┌· ─
ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN
pigpen
pigpen
null
{}
easy
en
19
19
synthetic_educational
null
null
[ "symbol_frequency", "grid_position_decode" ]
Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids.
cda-0009890
UKEDERIBMENNDOLIRARAHNTMEXNTHYSOSTTYYEDTODHIOBECANAARSCSESUXRHENPMRCRHSNEIREEACTTLKFXCTSBOLTIRFTORUEEOHERXEEIQXPAUETESEBTHYHIP
UKEDERIBMENNDOLIRARAHNTMEXNTHYSOSTTYYEDTODHIOBECANAARSCSESUXRHENPMRCRHSNEIREEACTTLKFXCTSBOLTIRFTORUEEOHERXEEIQXPAUETESEBTHYHIP
THE ARCHITECTURE SHOULD MAKE MISUSE HARDER MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS
double_transposition
double_transposition
null
{ "key1": "JUSTICE", "key2": "PATTERN" }
hard
en
126
126
synthetic_educational
null
null
[]
homophonic-v2-0008
62 51 91 89 50 72 70 10 20 19 72 62 80 58 49 89 43 31 22
62 51 91 89 50 72 70 10 20 19 72 62 80 58 49 89 43 31 22
MISSION ACCOMPLISHED
homophonic
homophonic
substitution
{ "type": "keyword", "value": "LIBERTY" }
intermediate
en
38
56
cipher_museum
2.0
public
null
null
trifid-v2-0154
GFTPADUHADOQ+JOOM
GFTPADUHADOQ+JOOM
COURAGE IN DARKNESS
trifid
trifid
fractionation
{ "type": "keyword", "value": "FORTRESS" }
advanced
en
17
17
cipher_museum
2.0
public
null
null
kama-sutra-v2-0098
EY EUPLVQL HIUMYXQ EL BLIBEL RLVZ IX YRLXUV DLUEELIV LQ BEIZ FIZQL BCIV QCIZ ELZ GCDDLZ EUPVLZ
EY EUPLVQL HIUMYXQ EL BLIBEL RLVZ IX YRLXUV DLUEELIV LQ BEIZ FIZQL BCIV QCIZ ELZ GCDDLZ EUPVLZ
LA LIBERTE GUIDANT LE PEUPLE VERS UN AVENIR MEILLEUR ET PLUS JUSTE POUR TOUS LES HOMMES LIBRES
kama_sutra
kama_sutra
substitution
{ "type": "keyword", "value": "SANSKRIT" }
intermediate
en
78
94
cipher_museum
2.0
public
null
null
jefferson-disk-v2-0242
JJKMMJRPXHQADKQDZHZ
JJKMMJRPXHQADKQDZHZ
WISDOM GUARDS THE GATE
jefferson_disk
jefferson_disk
disk
{ "type": "disk_order", "value": "1,3,5,2,4,6" }
expert
en
19
19
cipher_museum
2.0
public
null
null
trifid-v2-0518
XJLTATUNDEJKGZ
XJLTATUNDEJKGZ
PRESS THE ATTACK
trifid
trifid
fractionation
{ "type": "keyword", "value": "JUSTICE" }
advanced
en
14
14
cipher_museum
2.0
public
null
null
diana-v3-0586
DQFPRCTRNOCWCRXUBRBYBQGZMEKAJBLCUIYCOOFRWWJSYAPURDUALLJGXMHPMUBFFSABOZSAKG
DQFPRCTRNOCWCRXUBRBYBQGZMEKAJBLCUIYCOOFRWWJSYAPURDUALLJGXMHPMUBFFSABOZSAKG
GENERAL SHERMAN MARCHED TO THE SEA THROUGH GEORGIA CUTTING A SIXTY MILE WIDE PATH OF RUIN
diana
diana
polyalphabetic
{ "type": "keyword", "value": "JUSTICE" }
intermediate
en
74
74
cipher_museum
2.0
public
null
null
nomenclator-v3-0093
23 05 08 15 12 04 20 08 05 19 05 20 18 21 20 08 19 63 02 05 19 05 12 06 05 22 09 04 05 14 20 20 08 01 20 01 12 12 13 05 14 01 18 05 03 18 05 01 20 05 04 05 17 21 01 12 20 08 01 20 20 08 05 25 01 18 05 05 14 04 15 23 05 04 02 25 20 08 05 09 18 03 18 05 01 20 15 18 23 09 20 08 03 05 18 20 01 09 14 21 14 01 12 09 05 14 01...
23 05 08 15 12 04 20 08 05 19 05 20 18 21 20 08 19 63 02 05 19 05 12 06 05 22 09 04 05 14 20 20 08 01 20 01 12 12 13 05 14 01 18 05 03 18 05 01 20 05 04 05 17 21 01 12 20 08 01 20 20 08 05 25 01 18 05 05 14 04 15 23 05 04 02 25 20 08 05 09 18 03 18 05 01 20 15 18 23 09 20 08 03 05 18 20 01 09 14 21 14 01 12 09 05 14 01...
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
nomenclator
nomenclator
nomenclator
{ "type": "none", "value": null }
expert
en
326
488
cipher_museum
2.0
public
null
null
cda-0019124
TBEIUTYTQJBIXEHRDBBLISCMLSJMRQJQIXLTTTKAFAMZZVRXCBVYAIUVSPAHBJMYUZLHVURLTKPUXNKQXBHJWJQAXKFDETPKWKFIPMOYGXVBDKKTPZNBGERTBGAEPEBOROMNTEZKANAEHMVPVIRF
TBEIUTYTQJBIXEHRDBBLISCMLSJMRQJQIXLTTTKAFAMZZVRXCBVYAIUVSPAHBJMYUZLHVURLTKPUXNKQXBHJWJQAXKFDETPKWKFIPMOYGXVBDKKTPZNBGERTBGAEPEBOROMNTEZKANAEHMVPVIRF
THE ARCHITECTURE SHOULD MAKE MISUSE HARDER DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN
one_time_pad
one_time_pad
null
{}
hard
en
148
148
synthetic_educational
null
null
[ "information_theoretic_proof", "key_reuse_attack" ]
One-time pad: theoretically unbreakable if key is truly random and never reused.
caesar-v3-0968
IWT HWDI WTPGS GDJCS IWT LDGAS
IWT HWDI WTPGS GDJCS IWT LDGAS
THE SHOT HEARD ROUND THE WORLD
caesar
caesar
substitution
{ "type": "shift", "value": 15 }
beginner
en
25
30
cipher_museum
2.0
public
null
null
m94-164
GWONBKBQXVHTBXFUUFJHXTAACBPWLFRZJCBSLOZAXQRBYHXPLHQIPOLRK
GWONBKBQXVHTBXFUUFJHXTAACBPWLFRZJCBSLOZAXQRBYHXPLHQIPOLRK
ELEMENTARY MY DEAR WATSON THE GAME IS AFOOT AND THE CRIMINAL IS CLOSE
m94
m94
machine
{ "type": "seed", "value": "SECRET" }
expert
en
57
57
cipher_museum
0.2
public
null
null
cda-0020130
802 999 854 859 851 844 840 818 999 806 834 802 825 838 999 840 813 814 809 855 999 856 858 851 844 839 820 999 812 864 825 809 812 841 807 813 999
802 999 854 859 851 844 840 818 999 806 834 802 825 838 999 840 813 814 809 855 999 856 858 851 844 839 820 999 812 864 825 809 812 841 807 813 999
A STRONG CLAIM NEEDS STRONG EVIDENCE
culper_ring
culper_ring
null
{}
medium
en
31
31
synthetic_educational
null
null
[ "codebook_frequency", "number_range_analysis" ]
Culper Ring code: Washington's three-digit codebook numbers (800–999 range).
fialka-v3-0294
SPNQGJINRPYXLARNAQZDKCZLODRNSHCKVWLNVLVNLQZWFFQOKARIQBDCYJVFQABDUXWRDGPZWKSRJTX
SPNQGJINRPYXLARNAQZDKCZLODRNSHCKVWLNVLVNLQZWFFQOKARIQBDCYJVFQABDUXWRDGPZWKSRJTX
ALL PERSONS BORN OR NATURALIZED IN THE UNITED STATES ARE CITIZENS SUBJECT TO EQUAL PROTECTION
fialka
fialka
machine
{ "type": "seed", "value": "SOVIET" }
expert
en
79
79
cipher_museum
2.0
public
null
null
cardano-autokey-v2-0330
ENVVLFHVBLAVCDGABBWBBTKYALGQOSLTWWIBBVTYAOTNLEHQQAYQRPGWZVFVFPANBRUPQRGTTWDWJ
ENVVLFHVBLAVCDGABBWBBTKYALGQOSLTWWIBBVTYAOTNLEHQQAYQRPGWZVFVFPANBRUPQRGTTWDWJ
NAVAL UNITS IN POSITION OFF THE COAST AWAITING SIGNAL TO COMMENCE SHORE BOMBARDMENT AT DAWN
cardano_autokey
cardano_autokey
polyalphabetic
{ "type": "keyword", "value": "ROME" }
advanced
en
77
77
cipher_museum
2.0
public
null
null
cda-0003659
ORNHSBEG VF GUR ERPVCEBPNY BS IVTRARER NAQ QRPELCGF VGFRYS
ORNHSBEG VF GUR ERPVCEBPNY BS IVTRARER NAQ QRPELCGF VGFRYS
BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF
rot13
rot13
null
{ "shift": 13 }
medium
en
50
50
synthetic_educational
null
null
[ "brute_force_26", "self_inverse_check" ]
ROT-13 is Caesar with shift 13 — it is its own inverse.
argenti-v3-0199
37 82 83 28 67 16 64 81 41 26 77 84 56 17 75 22 66 18 20 32 83 26 63 38 28 67 20 56 72 65 83 67 37 23 44 41 71 82 66 63 37 20 77 83 79 20 25 17 34 26 23 84 15 66 18 83 69 20 44 81 72 77 26 34 28 56 67 36 17 25 77 64 37 82 83 41 56 38 20 63 13 23 44 75 28 25 12 66 18 67 83 20 32 63 36 22 17 70 56 28 37 72 23 44 75 16 63...
37 82 83 28 67 16 64 81 41 26 77 84 56 17 75 22 66 18 20 32 83 26 63 38 28 67 20 56 72 65 83 67 37 23 44 41 71 82 66 63 37 20 77 83 79 20 25 17 34 26 23 84 15 66 18 83 69 20 44 81 72 77 26 34 28 56 67 36 17 25 77 64 37 82 83 41 56 38 20 63 13 23 44 75 28 25 12 66 18 67 83 20 32 63 36 22 17 70 56 28 37 72 23 44 75 16 63...
THE ARMY WILL CROSS THE DELAWARE RIVER TONIGHT AT ELEVEN OCLOCK THE MEN WILL CARRY ONLY THEIR WEAPONS AND THREE DAYS OF RATIONS MARCH ROUTES AND OBJECTIVES WILL BE DISTRIBUTED TO COMMANDERS AT THE CROSSING
argenti
argenti
nomenclator
{ "type": "seed", "value": "PAPAL" }
expert
en
342
512
cipher_museum
2.0
public
null
null
rail-fence-v3-0397
TTENTHAETSOASAEGDABIRETPETTYTEHEOLOSTURTSWETDHTEOEDHEEISTRTETCTEDSOUIOSRENNNV
TTENTHAETSOASAEGDABIRETPETTYTEHEOLOSTURTSWETDHTEOEDHEEISTRTETCTEDSOUIOSRENNNV
THE POWERS NOT DELEGATED TO THE UNITED STATES BY THE CONSTITUTION ARE RESERVED TO THE STATES
rail_fence
rail_fence
transposition
{ "type": "integer", "value": 10 }
intermediate
en
77
77
cipher_museum
2.0
public
null
null
red-type-a-v3-0067
MODJYTGACUZIMAYZRWQUMXFUNHYLIACZLOOVGEQETONAYXNUJABEFAPQZUOBRHOTETNJIOODU
MODJYTGACUZIMAYZRWQUMXFUNHYLIACZLOOVGEQETONAYXNUJABEFAPQZUOBRHOTETNJIOODU
WATSON WE HAVE FOUND THE STRUCTURE OF DNA AND IT IS A DOUBLE HELIX OF BREATHTAKING BEAUTY
red_type_a
red_type_a
machine
{ "type": "keyword", "value": "SAKURA" }
advanced
en
73
73
cipher_museum
2.0
public
null
null
wallis-cipher-v2-0189
90 61 85 55 91 90 82 25 41 91 90 53 85 91 90 30 25 37 63 33 91 90 15 44 76 91 90 67 85 20 77 41 91 90 45 58 18 15 91 90 44 63 91 90 11 47 71 76 91 90 58 54 40 91 90 25 81 30 89 91 90 53 85 66 91 90 45 44 18 15 91 90 23 58 25 63 37 76 55 91 90 12 63 77 84 76 71 63 40 91 90 53 44 47 30 77 91 90 81 85 45 91 90 88 76 20 54...
90 61 85 55 91 90 82 25 41 91 90 53 85 91 90 30 25 37 63 33 91 90 15 44 76 91 90 67 85 20 77 41 91 90 45 58 18 15 91 90 44 63 91 90 11 47 71 76 91 90 58 54 40 91 90 25 81 30 89 91 90 53 85 66 91 90 45 44 18 15 91 90 23 58 25 63 37 76 55 91 90 12 63 77 84 76 71 63 40 91 90 53 44 47 30 77 91 90 81 85 45 91 90 88 76 20 54...
FOR GOD SO LOVED THE WORLD THAT HE GAVE HIS ONLY SON THAT WHOEVER BELIEVES SHALL NOT PERISH
wallis_cipher
wallis_cipher
nomenclator
{ "type": "seed", "value": "ENGLAND" }
expert
en
220
329
cipher_museum
2.0
public
null
null
sigaba-v3-0117
YODBDMVIAAXHRVPNMIWPT
YODBDMVIAAXHRVPNMIWPT
THE CASTLE IS SURROUNDED
sigaba
sigaba
machine
{ "type": "seed", "value": "ARMY" }
expert
en
21
21
cipher_museum
2.0
public
null
null
cda-0017439
CAZX QYCR GTLN KHWX GIIH GVVN VTWH TNON FIYC SZSN USEI UCIZ FFVE UUFW HOVQ ZQHF VUUH FESL MFUW ZRZI YHZQ KBGM
CAZX QYCR GTLN KHWX GIIH GVVN VTWH TNON FIYC SZSN USEI UCIZ FFVE UUFW HOVQ ZQHF VUUH FESL MFUW ZRZI YHZQ KBGM
A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY
running_key
running_key
null
{}
hard
en
88
88
synthetic_educational
null
null
[ "index_of_coincidence", "probable_plaintext" ]
Running-key cipher: Vigenère with a very long key (e.g. a book passage).
autokey-v2-0560
REFHEPSBGUOPPCNNZEHVVYIKQORAEBWNURTSPSSGXGAASDQPOJZVFCZZHMMXKSUKIOL
REFHEPSBGUOPPCNNZEHVVYIKQORAEBWNURTSPSSGXGAASDQPOJZVFCZZHMMXKSUKIOL
I KNOW NOT WHAT COURSE OTHERS MAY TAKE BUT AS FOR ME GIVE ME LIBERTY OR GIVE ME DEATH
autokey
autokey
polyalphabetic
{ "type": "keyword", "value": "JUSTICE" }
intermediate
en
67
67
cipher_museum
2.0
public
null
null
geez-monastic-v2-0181
ZFQWOYSOFIJTFSLEFVESEZAXFFTSBTFAZIZCCOQZIIODPOXFIJOXATIJTMZFESIJTTZAIEAOLTF
ZFQWOYSOFIJTFSLEFVESEZAXFFTSBTFAZIZCCOQZIIODPOXFIJOXATIJTMZFESIJTTZAIEAOLTF
ARMY OF NORTHERN VIRGINIA SURRENDERS AT APPOMATTOX COURTHOUSE THE WAR IN THE EAST IS OVER
geez_monastic
geez_monastic
substitution
{ "type": "keyword", "value": "AXUM" }
advanced
en
75
75
cipher_museum
2.0
public
null
null
atbash-v3-0039
GSV VCKVIRNVMG XLMURINH
GSV VCKVIRNVMG XLMURINH
THE EXPERIMENT CONFIRMS
atbash
atbash
substitution
{ "type": "none", "value": null }
beginner
en
21
23
cipher_museum
2.0
public
null
null
cda-0017252
- .... . / .. -. -.. . -..- / --- ..-. / -.-. --- .. -. -.-. .. -.. . -. -.-. . / .. ... / .- / ..- ... . ..-. ..- .-.. / -.-. .-.. ..- . / . ...- . .-. -.-- / ... -.-- ... - . -- / -. . . -.. ... / .- -. / .... --- -. . ... - / - .... .-. . .- - / -- --- -.. . .-..
- .... . / .. -. -.. . -..- / --- ..-. / -.-. --- .. -. -.-. .. -.. . -. -.-. . / .. ... / .- / ..- ... . ..-. ..- .-.. / -.-. .-.. ..- . / . ...- . .-. -.-- / ... -.-- ... - . -- / -. . . -.. ... / .- -. / .... --- -. . ... - / - .... .-. . .- - / -- --- -.. . .-..
THE INDEX OF COINCIDENCE IS A USEFUL CLUE EVERY SYSTEM NEEDS AN HONEST THREAT MODEL
morse_code
morse_code
null
{}
medium
en
69
69
synthetic_educational
null
null
[ "symbol_decode", "frequency_analysis" ]
Morse code: dots and dashes; word-separated by / symbol.
caesar-v3-0854
RSOR ASB HSZZ BC HOZSG
RSOR ASB HSZZ BC HOZSG
DEAD MEN TELL NO TALES
caesar
caesar
substitution
{ "type": "shift", "value": 14 }
beginner
en
18
22
cipher_museum
2.0
public
null
null
polybius-v2-0047
52 15 11 42 15 43 45 13 23 43 44 45 21 21 11 43 14 42 15 11 32 43 11 42 15 32 11 14 15 34 33 11 33 14 34 45 42 31 24 44 44 31 15 31 24 21 15 24 43 42 34 45 33 14 15 14 52 24 44 23 11 43 31 15 15 35
52 15 11 42 15 43 45 13 23 43 44 45 21 21 11 43 14 42 15 11 32 43 11 42 15 32 11 14 15 34 33 11 33 14 34 45 42 31 24 44 44 31 15 31 24 21 15 24 43 42 34 45 33 14 15 14 52 24 44 23 11 43 31 15 15 35
WE ARE SUCH STUFF AS DREAMS ARE MADE ON AND OUR LITTLE LIFE IS ROUNDED WITH A SLEEP
polybius
polybius
substitution
{ "type": "none", "value": null }
beginner
en
132
197
cipher_museum
2.0
public
null
null
cda-0011279
ATHFAXTZXECHNAIXIXNRXGIERIXPZEPEIXEXSRETRTGTXEXANTWCLX
ATHFAXTZXECHNAIXIXNRXGIERIXPZEPEIXEXSRETRTGTXEXANTWCLX
THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN
double_transposition
double_transposition
null
{ "key1": "LIBERTY", "key2": "SIGNAL" }
medium
en
54
54
synthetic_educational
null
null
[]
gronsfeld-v2-0288
SPILYAFVYKLHAO
SPILYAFVYKLHAO
LIBERTY OR DEATH
gronsfeld
gronsfeld
polyalphabetic
{ "type": "numeric", "value": "77777" }
intermediate
en
14
14
cipher_museum
2.0
public
null
null
chaocipher-v2-0019
QAZRIPZEDWHDBAPEXQ
QAZRIPZEDWHDBAPEXQ
CONTACT HAS BEEN MADE
chaocipher
chaocipher
machine
{ "type": "keyword", "value": "PALACE" }
advanced
en
18
18
cipher_museum
2.0
public
null
null
cardano-autokey-v3-0238
KTXXTBWBJEBAVINKVTGVWWRGTTBWB
KTXXTBWBJEBAVINKVTGVWWRGTTBWB
TAXATION WITHOUT REPRESENTATION
cardano_autokey
cardano_autokey
polyalphabetic
{ "type": "keyword", "value": "ROME" }
advanced
en
29
29
cipher_museum
2.0
public
null
null
two-square-119
ABORTMHBEHQGNOWX
ABORTMHBEHQGNOWX
ABORT MISSION NOW
two_square
two_square
polygraphic
{ "key1": "SECRET", "key2": "AGENTS" }
advanced
en
16
16
cipher_museum
0.2
public
null
null
cda-0009866
EWABQECFELMASGHJIGADBJMTLGPFPUPFUWYEQLGZQOVAOIHJLNLP
EWABQECFELMASGHJIGADBJMTLGPFPUPFUWYEQLGZQOVAOIHJLNLP
COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER CAREFULLY
autokey
autokey
null
{ "primer": "CIPHER" }
medium
en
52
52
synthetic_educational
null
null
[]
hill-v2-0129
DKYXOXTDBDZH
DKYXOXTDBDZH
HOLD THE LINE
hill
hill
polygraphic
{ "a": 5, "b": 7, "c": 2, "d": 9 }
advanced
en
12
12
cipher_museum
2.0
public
null
null
rail-fence-v3-0387
TAAUNHSNHSZWIAEUDTITRHJOMINOOCOHIWGATNUTLSLLEIRAENESLONFSISAOGEOBGTPNAYEEG
TAAUNHSNHSZWIAEUDTITRHJOMINOOCOHIWGATNUTLSLLEIRAENESLONFSISAOGEOBGTPNAYEEG
THE JOURNEY OF A THOUSAND MILES BEGINS WITH A SINGLE STEP AS LAO TZU WROTE LONG AGO IN CHINA
rail_fence
rail_fence
transposition
{ "type": "integer", "value": 10 }
intermediate
en
74
74
cipher_museum
2.0
public
null
null
cda-0004297
SEEBE NBEESQGWBA OAQ RRGSQGWBA OER THAROZSAGOY GB FRQHES FLFGRZF
SEEBE NBEESQGWBA OAQ RRGSQGWBA OER THAROZSAGOY GB FRQHES FLFGRZF
ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS
porta
porta
null
{ "key": "SECURE" }
medium
en
56
56
synthetic_educational
null
null
[ "kasiski_examination", "index_of_coincidence" ]
Porta: 13-row table polyalphabetic cipher; reciprocal (encrypt = decrypt).
adfgvx-153
AFVDGAAADADADFAFAGFAAAAFVXAXVXVDXDXDVVVVDGXXAXVFDFVGVDFGFGAFAFDDDADADAAD
AFVDGAAADADADFAFAGFAAAAFVXAXVXVDXDXDVVVVDGXXAXVFDFVGVDFGFGAFAFDDDADADAAD
THE ONLY THING WE HAVE TO FEAR IS FEAR ITSELF
adfgvx
adfgvx
fractionation
{ "polybius": "SECRET", "columnar": "AGENTS" }
advanced
en
72
72
cipher_museum
0.2
public
null
null
trithemius-118
WIGWLJX APNBPRBFT OV WTN JN APHNL QU AMGAAXOGQE MT TF VH UGH QM SHF IOSWE VN PYO RBF IXV WTLOD FQ SHF NRVIY HVM DSQ SIABEWLM ODBPDOG VKI BUYTM KYP GVTO KZTN YSBJK TIGUINT
WIGWLJX APNBPRBFT OV WTN JN APHNL QU AMGAAXOGQE MT TF VH UGH QM SHF IOSWE VN PYO RBF IXV WTLOD FQ SHF NRVIY HVM DSQ SIABEWLM ODBPDOG VKI BUYTM KYP GVTO KZTN YSBJK TIGUINT
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
trithemius
trithemius
polyalphabetic
{ "type": "offset", "value": 0 }
beginner
en
137
170
cipher_museum
0.2
public
null
null
cda-0016591
FAILC LOSEX ISAPO STURE NOTAS LOGAN
FAILC LOSEX ISAPO STURE NOTAS LOGAN
FAIL CLOSED IS A POSTURE NOT A SLOGAN
commercial_code
commercial_code
null
{}
medium
en
30
30
synthetic_educational
null
null
[ "codebook_frequency", "five_letter_group_analysis" ]
Commercial code: five-letter groups from a codebook, often ending in X or Z.
bazeries-029
JGERJTIUGFAGPFNY
JGERJTIUGFAGPFNY
LOCK DOWN ALL GATES
bazeries
bazeries
transposition
{ "type": "integer", "value": 42 }
advanced
en
16
16
cipher_museum
0.2
public
null
null
cda-0017371
ATRA ZSPA RENT TOZL SHOU LDSH OWIT SREA SONI NGTZ EBIF IDCI PHER COMB INEX APOL XBIU SSQU AREW ITHZ RANS ZOSI TXON THZD ETEC TIVE STUD IESP ATTE RNSZ EFOR XMAK IXGC LAXM SBBZ
ATRA ZSPA RENT TOZL SHOU LDSH OWIT SREA SONI NGTZ EBIF IDCI PHER COMB INEX APOL XBIU SSQU AREW ITHZ RANS ZOSI TXON THZD ETEC TIVE STUD IESP ATTE RNSZ EFOR XMAK IXGC LAXM SBBZ
A TRANSPARENT TOOL SHOULD SHOW ITS REASONING THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS
commercial_code
commercial_code
null
{}
hard
en
140
140
synthetic_educational
null
null
[ "codebook_frequency", "five_letter_group_analysis" ]
Commercial code: five-letter groups from a codebook, often ending in X or Z.
trifid-v3-0456
SCCDSA
SCCDSA
EUREKA
trifid
trifid
fractionation
{ "type": "keyword", "value": "JUSTICE" }
advanced
en
6
6
cipher_museum
2.0
public
null
null
jn25-134
22345 22356 22356 22343 22353 22356 22359 22353 22354 22352 22349 22354 22352 22349 22345 22354
22345 22356 22356 22343 22353 22356 22359 22353 22354 22352 22349 22354 22352 22349 22345 22354
ALL IS LOST RETREAT
jn25
jn25
codebook
{ "type": "additive", "value": "12345" }
expert
en
80
95
cipher_museum
0.2
public
null
null
cda-0018395
AAABA ABABA AAAAA BAAAB BAAAB ABAAA AAABA AAAAA ABABA AAABA ABAAA ABBBA AABBB AABAA BAAAA BAAAB BAABA AABAA AAAAA AAABA AABBB BABAA AABBB BABBA ABABB ABBAB AAABB AABAA BAAAA ABBAA BAAAB AABAA AAABA BAABB BAAAA ABAAA BAABA BABBA ABABB AAAAA BAABA BAABA AABAA BAAAA BAAAB ABBBA ABBAB ABABA BABBA AAAAA ABABA ABBBA AABBB AA...
AAABA ABABA AAAAA BAAAB BAAAB ABAAA AAABA AAAAA ABABA AAABA ABAAA ABBBA AABBB AABAA BAAAA BAAAB BAABA AABAA AAAAA AAABA AABBB BABAA AABBB BABBA ABABB ABBAB AAABB AABAA BAAAA ABBAA BAAAB AABAA AAABA BAABB BAAAA ABAAA BAABA BABBA ABABB AAAAA BAABA BAABA AABAA BAAAA BAAAB ABBBA ABBAB ABABA BABBA AAAAA ABABA ABBBA AABBB AA...
CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL
bacon_cipher
bacon_cipher
null
{}
hard
en
885
885
synthetic_educational
null
null
[ "five_bit_decode", "ab_frequency_analysis" ]
Bacon's biliteral cipher: each letter encoded as 5-bit A/B string.
cda-0015622
⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w20⟩ ⟨a07⟩ ⟨w32⟩ ⟨w26⟩ ⟨w04⟩ ⟨w08⟩ ⟨w04⟩ ⟨w08⟩ ⟨w14⟩ ⟨a29⟩ ⟨w32⟩ ⟨a07⟩ ⟨w20⟩ ⟨w28⟩ ⟨w22⟩ ⟨w20⟩ ⟨a17⟩ ⟨a19⟩ ⟨w10⟩ ⟨a25⟩ ⟨w10⟩ ⟨a19⟩ ⟨w22⟩ ⟨a25⟩ ⟨w10⟩ ⟨w14⟩ ⟨a19⟩ ⟨w20⟩ ⟨w08⟩ ⟨a25⟩ ⟨w20⟩ ⟨w08⟩ ⟨a13⟩ ⟨w10⟩ ⟨a01⟩ ⟨w40⟩ ⟨w08⟩ ⟨a01⟩ ⟨a13⟩ ⟨a29⟩ ⟨w08⟩ ⟨a11⟩ ⟨w20⟩ ⟨a25⟩ ⟨w32⟩ ⟨w14⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w...
⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w20⟩ ⟨a07⟩ ⟨w32⟩ ⟨w26⟩ ⟨w04⟩ ⟨w08⟩ ⟨w04⟩ ⟨w08⟩ ⟨w14⟩ ⟨a29⟩ ⟨w32⟩ ⟨a07⟩ ⟨w20⟩ ⟨w28⟩ ⟨w22⟩ ⟨w20⟩ ⟨a17⟩ ⟨a19⟩ ⟨w10⟩ ⟨a25⟩ ⟨w10⟩ ⟨a19⟩ ⟨w22⟩ ⟨a25⟩ ⟨w10⟩ ⟨w14⟩ ⟨a19⟩ ⟨w20⟩ ⟨w08⟩ ⟨a25⟩ ⟨w20⟩ ⟨w08⟩ ⟨a13⟩ ⟨w10⟩ ⟨a01⟩ ⟨w40⟩ ⟨w08⟩ ⟨a01⟩ ⟨a13⟩ ⟨a29⟩ ⟨w08⟩ ⟨a11⟩ ⟨w20⟩ ⟨a25⟩ ⟨w32⟩ ⟨w14⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w...
THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY
babington
babington
null
{}
hard
en
210
210
synthetic_educational
null
null
[ "nomenclator_frequency", "symbol_mapping" ]
Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot.
cda-0013979
01312 02852 01913 01981 02863 01612 0319 04451 1317 2573 01614 3826 3795 4174 0406 4414 02833 4425 06282 5739 04781 01279 06618 1010 1625 01323 5063 6610 00636 3784 2863 00942 03498 01634 7878 1006 05677 7887 5024 06376 04792 02236 5705 0360 05091 02536 07882 02882 4413 4470 2861 04495 1604 06373 1634 01602 4459 6014 1...
01312 02852 01913 01981 02863 01612 0319 04451 1317 2573 01614 3826 3795 4174 0406 4414 02833 4425 06282 5739 04781 01279 06618 1010 1625 01323 5063 6610 00636 3784 2863 00942 03498 01634 7878 1006 05677 7887 5024 06376 04792 02236 5705 0360 05091 02536 07882 02882 4413 4470 2861 04495 1604 06373 1634 01602 4459 6014 1...
DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN
zimmermann
zimmermann
null
{}
hard
en
176
176
synthetic_educational
null
null
[ "codebook_frequency", "number_group_analysis" ]
Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher.
bacon-cipher-v2-0033
AAAAA ABBAA ABBAA BAABB ABAAA BAABA AAABA ABBAB AABAA ABBBA BAABA ABAAA BAAAB
AAAAA ABBAA ABBAA BAABB ABAAA BAABA AAABA ABBAB AABAA ABBBA BAABA ABAAA BAAAB
ANNUIT COEPTIS
bacon_cipher
bacon_cipher
steganography
{ "type": "none", "value": null }
beginner
en
65
77
cipher_museum
2.0
public
null
null
affine-v3-0963
KIB FHLSJZZ SHTWKZ KOVB
KIB FHLSJZZ SHTWKZ KOVB
THE COMPASS POINTS TRUE
affine
affine
substitution
{ "a": 11, "b": 9 }
beginner
en
20
23
cipher_museum
2.0
public
null
null
fractionated-morse-082
RETSXIARHXCATBMHVATAP
RETSXIARHXCATBMHVATAP
AWAIT FURTHER ORDERS
fractionated_morse
fractionated_morse
fractionation
{ "type": "keyword", "value": "CIPHER" }
advanced
en
21
21
cipher_museum
0.2
public
null
null
cda-0013301
GAH / A-KHA / NO-DA-IH / THAN-ZIE / DZEH / MOASI / TKIN / CLA-GI-AIH / LIN / DZEH / GAH / DIBEH / GAH / DZEH / WOL-LA-CHEE / BE / WOL-LA-CHEE / AH-JAH / GAH / TKIN / BE / TKIN / TSAH / WOL-LA-CHEE / CLA-GI-AIH / GAH / ...
GAH / A-KHA / NO-DA-IH / THAN-ZIE / DZEH / MOASI / TKIN / CLA-GI-AIH / LIN / DZEH / GAH / DIBEH / GAH / DZEH / WOL-LA-CHEE / BE / WOL-LA-CHEE / AH-JAH / GAH / TKIN / BE / TKIN / TSAH / WOL-LA-CHEE / CLA-GI-AIH / GAH / ...
ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION
navajo_code
navajo_code
null
{}
hard
en
190
190
synthetic_educational
null
null
[ "codebook_frequency", "word_list_attack" ]
Navajo Code Talker cipher: Navajo words represent English letters.
nomenclator-v2-0187
01 19 11 23 08 01 20 25 15 21 03 01 14 04 15 06 15 18 25 15 21 18 03 15 21 14 20 18 25 14 15 20 23 08 01 20 25 15 21 18 03 15 21 14 20 18 25 03 01 14 04 15 06 15 18 25 15 21 20 15 04 01 25 61 01 12 23 01 25 19
01 19 11 23 08 01 20 25 15 21 03 01 14 04 15 06 15 18 25 15 21 18 03 15 21 14 20 18 25 14 15 20 23 08 01 20 25 15 21 18 03 15 21 14 20 18 25 03 01 14 04 15 06 15 18 25 15 21 20 15 04 01 25 61 01 12 23 01 25 19
ASK WHAT YOU CAN DO FOR YOUR COUNTRY NOT WHAT YOUR COUNTRY CAN DO FOR YOU TODAY AND ALWAYS
nomenclator
nomenclator
nomenclator
{ "type": "seed", "value": "PALACE" }
expert
en
140
209
cipher_museum
2.0
public
null
null
bazeries-v2-0618
KLQFAQOBRHAQLXFYQPFSKFCRAQKBXOLOFHXHLGOSLRQHKLYOKFPSLAQAEBHYHOYKSABPYKFYOAQXQWMGGFHHPKLPOHPFYGHAPHUFGPKBAQBVFQPXKFHOKBHQLBGGHIKBFEFKSHAQQPPYHQBKPPHQFQHIGGFAHHOR
KLQFAQOBRHAQLXFYQPFSKFCRAQKBXOLOFHXHLGOSLRQHKLYOKFPSLAQAEBHYHOYKSABPYKFYOAQXQWMGGFHHPKLPOHPFYGHAPHUFGPKBAQBVFQPXKFHOKBHQLBGGHIKBFEFKSHAQQPPYHQBKPPHQFQHIGGFAHHOR
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
bazeries
bazeries
transposition
{ "type": "integer", "value": 53 }
advanced
en
160
160
cipher_museum
2.0
public
null
null
cardano-autokey-v2-0462
FXBKHPHJKAEBAVINPEAVRAUASDDNTKVFIMLAPVTGNQZEAVRAIEBAVINVQILRGKMAMFEBUMTXPJUKFKASPWK
FXBKHPHJKAEBAVINPEAVRAUASDDNTKVFIMLAPVTGNQZEAVRAIEBAVINVQILRGKMAMFEBUMTXPJUKFKASPWK
KNOWLEDGE WITHOUT WISDOM IS A DANGEROUS THING AND WISDOM WITHOUT COURAGE IS ULTIMATELY WORTHLESS
cardano_autokey
cardano_autokey
polyalphabetic
{ "type": "keyword", "value": "VENICE" }
advanced
en
83
83
cipher_museum
2.0
public
null
null
venona-pad-reuse-v3-0255
NCMWD55RCDQOGZBAWEIFUFTOJNYHBSCAA5LFCEWLDKOVIEOGBK7WWH46N7JKGOJLAXQOKARDXFHGBTRJXNLMTZBA
NCMWD55RCDQOGZBAWEIFUFTOJNYHBSCAA5LFCEWLDKOVIEOGBK7WWH46N7JKGOJLAXQOKARDXFHGBTRJXNLMTZBA
IT IS A TRUTH UNIVERSALLY ACKNOWLEDGED THAT A SINGLE MAN IN POSSESSION OF A FORTUNE MUST BE IN WANT OF A WIFE
venona_pad_reuse
venona_pad_reuse
stream
{ "type": "keyword", "value": "FREEDOM" }
expert
en
88
88
cipher_museum
2.0
public
null
null
cda-0021723
817 851 814 849 862 813 839 808 873 999 802 839 801 833 874 854 825 856 999 808 802 839 999 853 812 863 812 800 834 999 868 812 800 832 999 808 826 845 822 813 852 856 999 859 822 812 999 826 840 811 812 870 999 842 815 999 808 844 825 839 808 826 811 813 841 806 814 999 825 856 999 801 999 860 856 813 817 862 833 999 ...
817 851 814 849 862 813 839 808 873 999 802 839 801 833 874 854 825 856 999 808 802 839 999 853 812 863 812 800 834 999 868 812 800 832 999 808 826 845 822 813 852 856 999 859 822 812 999 826 840 811 812 870 999 842 815 999 808 844 825 839 808 826 811 813 841 806 814 999 825 856 999 801 999 860 856 813 817 862 833 999 ...
FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS THE INDEX OF COINCIDENCE IS A USEFUL CLUE
culper_ring
culper_ring
null
{}
medium
en
71
71
synthetic_educational
null
null
[ "codebook_frequency", "number_range_analysis" ]
Culper Ring code: Washington's three-digit codebook numbers (800–999 range).
polybius-v3-0085
44 23 15 12 24 42 44 23 14 11 54 35 11 42 11 14 34 53 43 23 34 52 43 44 23 11 44 13 34 31 31 24 43 24 34 33 43 24 33 23 11 43 23 21 45 33 13 44 24 34 33 43 34 13 13 45 42 21 11 42 43 34 34 33 15 42 44 23 11 33 15 53 35 15 13 44 15 14
44 23 15 12 24 42 44 23 14 11 54 35 11 42 11 14 34 53 43 23 34 52 43 44 23 11 44 13 34 31 31 24 43 24 34 33 43 24 33 23 11 43 23 21 45 33 13 44 24 34 33 43 34 13 13 45 42 21 11 42 43 34 34 33 15 42 44 23 11 33 15 53 35 15 13 44 15 14
THE BIRTHDAY PARADOX SHOWS THAT COLLISIONS IN HASH FUNCTIONS OCCUR FAR SOONER THAN EXPECTED
polybius
polybius
substitution
{ "type": "none", "value": null }
beginner
en
156
233
cipher_museum
2.0
public
null
null
fractionated-morse-060
CAFCJGXTFTNBDPAAUURXRAQQBWJNVUNSTCPVWBNWKUAUDPXRBIOXJRSCSCJKBUUJRQPBRSBAGQAKNXUCAVANWJFTRQUHVWAJUJRSNSRAJOSEASFCBIESRXHVUNSTCXRAPUURXHQBDWJNVFNVIDBWJEWKFCJAUTEAKXNAWJNQJBPL
CAFCJGXTFTNBDPAAUURXRAQQBWJNVUNSTCPVWBNWKUAUDPXRBIOXJRSCSCJKBUUJRQPBRSBAGQAKNXUCAVANWJFTRQUHVWAJUJRSNSRAJOSEASFCBIESRXHVUNSTCXRAPUURXHQBDWJNVFNVIDBWJEWKFCJAUTEAKXNAWJNQJBPL
CRYPTANALYSIS IS THE ART OF BREAKING CODES WITHOUT THE KEY AND IT HAS BEEN PRACTICED FOR AS LONG AS THERE HAVE BEEN CODES TO BREAK THE HISTORY OF CRYPTOLOGY IS A BATTLE OF WITS
fractionated_morse
fractionated_morse
fractionation
{ "type": "keyword", "value": "ROUNDTABLE" }
advanced
en
172
172
cipher_museum
0.2
public
null
null
confederate-vigenere-v3-0093
IEUQSHLAIJQTEWALKMSSQSRNMINBHVZTGJHXSEPDQNNTLGJXEKQDRSBEDMLRFTUGFEJXIEPOJGKFQMLVURPTLELHVNUTUELVLTMEGNNNPIFTFCQRVIOXKMLRFAZQUKLAIJQAEGSMXXPZNEEVFEFWXYQPHTZYAMSWTACRPRWLW
IEUQSHLAIJQTEWALKMSSQSRNMINBHVZTGJHXSEPDQNNTLGJXEKQDRSBEDMLRFTUGFEJXIEPOJGKFQMLVURPTLELHVNUTUELVLTMEGNNNPIFTFCQRVIOXKMLRFAZQUKLAIJQAEGSMXXPZNEEVFEFWXYQPHTZYAMSWTACRPRWLW
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
confederate_vigenere
confederate_vigenere
polyalphabetic
{ "type": "keyword", "value": "MANCHESTER" }
intermediate
en
169
169
cipher_museum
2.0
public
null
null
kryha-v3-0219
VARVNJXVFLXYDAGPKAU
VARVNJXVFLXYDAGPKAU
AVE MARIA GRATIA PLENA
kryha
kryha
machine
{ "type": "keyword", "value": "PRAGUE" }
expert
en
19
19
cipher_museum
2.0
public
null
null
beaufort-v3-0144
PXJBQL
PXJBQL
EUREKA
beaufort
beaufort
polyalphabetic
{ "type": "keyword", "value": "TRAFALGAR" }
intermediate
en
6
6
cipher_museum
2.0
public
null
null
cda-0017612
daral chol rcheol okedy daral okedy sheedy shaiin oror otaiin choldaiin ctaiin daiin daral shal shal chol rcheol otaiin choldaiin shaiin okain oxed okshy oxed sheol shal chedal kaiiin raiin shaiin ctaiin otol okal chedy okeedy okain otaiin chor
daral chol rcheol okedy daral okedy sheedy shaiin oror otaiin choldaiin ctaiin daiin daral shal shal chol rcheol otaiin choldaiin shaiin okain oxed okshy oxed sheol shal chedal kaiiin raiin shaiin ctaiin otol okal chedy okeedy okain otaiin chor
ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS THE MESSAGE WAS HIDDEN BUT NOT SECURE
voynich_render
voynich_render
null
{}
hard
en
206
206
synthetic_educational
null
null
[ "statistical_analysis", "unsolved" ]
Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output.
chaocipher-v2-0410
QIZGTJIAAEVCI
QIZGTJIAAEVCI
E PLURIBUS UNUM
chaocipher
chaocipher
machine
{ "type": "keyword", "value": "JUSTICE" }
advanced
en
13
13
cipher_museum
2.0
public
null
null
cda-0019449
01969 05748 2923 01579 01258 4114 0369 4424 1665 05984 06369 2882 4175 00382 06352 1661 1279 03496 1663 7916 03849 1664 4419 2266 06289 02535 01957 5731 4743 04082 05977 6376 0413 06333 02865 06031 06333 02875 01016 06044 6318 02556 1621 00329 06637 06309 04787 3476 1642 7938 00947 02828 5057 02537 01660 5697 1613 7635...
01969 05748 2923 01579 01258 4114 0369 4424 1665 05984 06369 2882 4175 00382 06352 1661 1279 03496 1663 7916 03849 1664 4419 2266 06289 02535 01957 5731 4743 04082 05977 6376 0413 06333 02865 06031 06333 02875 01016 06044 6318 02556 1621 00329 06637 06309 04787 3476 1642 7938 00947 02828 5057 02537 01660 5697 1613 7635...
FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS
zimmermann
zimmermann
null
{}
hard
en
128
128
synthetic_educational
null
null
[ "codebook_frequency", "number_group_analysis" ]
Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher.
rail-fence-v2-0676
WWAHHENMACCRETIAEWTIHLHOESWLTUEITAOLWNARYDSAHONSSNTSAMAAEEYELMBL
WWAHHENMACCRETIAEWTIHLHOESWLTUEITAOLWNARYDSAHONSSNTSAMAAEEYELMBL
WHAT IS IN A NAME THAT WHICH WE CALL A ROSE BY ANY OTHER NAME WOULD SMELL AS SWEET
rail_fence
rail_fence
transposition
{ "type": "integer", "value": 12 }
intermediate
en
64
64
cipher_museum
2.0
public
null
null
lorenz-v2-0139
EXTRACTIONPOINTCHANGED
EXTRACTIONPOINTCHANGED
EXTRACTION POINT CHANGED
lorenz
lorenz
machine
{ "type": "seed", "value": "FISH" }
expert
en
22
22
cipher_museum
2.0
public
null
null
stager-route-298
WTROOODTODETSFSFLEWREEYDTTUAHAFROOERREHHEEYDWVDTYORENLHHATLINLHNEELDLTROHOEHRERTHEEIARAEFTHOTNRWDATXXHTTOEEHRIHGGLYTNAFEROTKSELLOESDESORHDEX
WTROOODTODETSFSFLEWREEYDTTUAHAFROOERREHHEEYDWVDTYORENLHHATLINLHNEELDLTROHOEHRERTHEEIARAEFTHOTNRWDATXXHTTOEEHRIHGGLYTNAFEROTKSELLOESDESORHDEX
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
stager_route
stager_route
transposition
{ "type": "integer", "value": 7 }
expert
en
140
140
cipher_museum
0.2
public
null
null
m209-v3-0079
MWVOBVJWOJATTVXARBYPNKVUUOMVPHQSIAKWPIAOBXNMUQQCOADSESFJTLPWYSYCKMQRYACORSHPVBCIVONL
MWVOBVJWOJATTVXARBYPNKVUUOMVPHQSIAKWPIAOBXNMUQQCOADSESFJTLPWYSYCKMQRYACORSHPVBCIVONL
SIGNALS INTELLIGENCE OR SIGINT INVOLVES INTERCEPTION AND ANALYSIS OF ELECTRONIC COMMUNICATIONS
m209
m209
machine
{ "type": "seed", "value": "ARMY" }
expert
en
84
84
cipher_museum
2.0
public
null
null
geheimschreiber-v2-0073
VAJZDYRMMWAQDPLBYVNSJOFRQLUCAONBFPIHNXWUKCVJIAFDIEMDENPXQEXGYYAXAXQNRYMBQ
VAJZDYRMMWAQDPLBYVNSJOFRQLUCAONBFPIHNXWUKCVJIAFDIEMDENPXQEXGYYAXAXQNRYMBQ
THE SECRET OF GETTING AHEAD IS GETTING STARTED ONE STEP AT A TIME GETS YOU VERY FAR INDEED
geheimschreiber
geheimschreiber
machine
{ "type": "seed", "value": "BERLIN" }
expert
en
73
73
cipher_museum
2.0
public
null
null
cda-0020478
2.14.7 2.36.8 14.41.15 18.38.5 6.22.4 3.16.8 2.25.10 12.33.13 16.2.2 20.10.6 9.31.15 3.35.13 20.37.7 9.31.10 19.5.9 7.27.8 8.40.8 9.13.2 9.23.8 10.9.1 3.16.11 18.45.5 19.38.2 17.13.8 12.4.7 10.33.8 5.7.6 11.40.15 6.22.2 10.6.6 3.9.5 8.47.1 4.27.11 17.29.15 5.7.10 5.22.10 3.42.13 6.49.14 9.13.2 2.46.12 11.10.15 15.23.4 ...
2.14.7 2.36.8 14.41.15 18.38.5 6.22.4 3.16.8 2.25.10 12.33.13 16.2.2 20.10.6 9.31.15 3.35.13 20.37.7 9.31.10 19.5.9 7.27.8 8.40.8 9.13.2 9.23.8 10.9.1 3.16.11 18.45.5 19.38.2 17.13.8 12.4.7 10.33.8 5.7.6 11.40.15 6.22.2 10.6.6 3.9.5 8.47.1 4.27.11 17.29.15 5.7.10 5.22.10 3.42.13 6.49.14 9.13.2 2.46.12 11.10.15 15.23.4 ...
PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION
book_cipher
book_cipher
null
{}
hard
en
126
126
synthetic_educational
null
null
[ "book_cipher_attack", "triple_index_search" ]
Book cipher: coordinates (page.line.word) referencing a shared document.
scytale-v2-0108
WNLROTWPIEWISROTTWIGEIRHHITHEVKEMTHTTEWNAHFAHOEALCISENATIHRGRTRICAMOIOEOERNDGFINTIEGHINSOTSITNTWWYSVLIOOAFIEESBURONSTHINDRTUUTNDNAHSSHDSOLETSEUX
WNLROTWPIEWISROTTWIGEIRHHITHEVKEMTHTTEWNAHFAHOEALCISENATIHRGRTRICAMOIOEOERNDGFINTIEGHINSOTSITNTWWYSVLIOOAFIEESBURONSTHINDRTUUTNDNAHSSHDSOLETSEUX
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
scytale
scytale
transposition
{ "type": "integer", "value": 8 }
intermediate
en
144
144
cipher_museum
2.0
public
null
null
geheimschreiber-v3-0316
VUITPVVCVNUQVZBWBHPD
VUITPVVCVNUQVZBWBHPD
THE LEGIONS STAND READY
geheimschreiber
geheimschreiber
machine
{ "type": "seed", "value": "TEUTON" }
expert
en
20
20
cipher_museum
2.0
public
null
null
cardano-autokey-v2-0278
BOITNMILGDKZHVUUP
BOITNMILGDKZHVUUP
KEEP YOUR POWDER DRY
cardano_autokey
cardano_autokey
polyalphabetic
{ "type": "keyword", "value": "ROME" }
advanced
en
17
17
cipher_museum
2.0
public
null
null
vernam-094
VCPDVFEXZWWHBZERNJLGHLHUBNCUBOCUEDEUKSEEFBAMUJJV
VCPDVFEXZWWHBZERNJLGHLHUBNCUBOCUEDEUKSEEFBAMUJJV
WE SHALL FIGHT ON THE BEACHES AND WE SHALL NEVER SURRENDER
vernam
vernam
stream
{ "type": "pad", "value": "ZYXWVUTS (repeating)" }
expert
en
48
48
cipher_museum
0.2
public
null
null
autokey-087
VPTAVRIPWLVT
VPTAVRIPWLVT
THE TRAP IS SET
autokey
autokey
polyalphabetic
{ "type": "keyword", "value": "CIPHER" }
intermediate
en
12
12
cipher_museum
0.2
public
null
null
cda-0018083
80 69 59 66 82 52 50 65 36 82 80 61 80 82 68 11 68 25 80 50 11 50 29 68 65 80 82 61 52 80 50 20 82 11 25 82 69 77 82 66 80 50 52 65 68 66 66 82 80 29 68 57 68 29 66 59 80 50 29 25 20 80 69 55 82 82 29 50 25 77 68 89 50 66 36 52 80 50 20 61 68 29 11 66 36 82 20 69 77 20 82 77 68 52 36 50 29 82
80 69 59 66 82 52 50 65 36 82 80 61 80 82 68 11 68 25 80 50 11 50 29 68 65 80 82 61 52 80 50 20 82 11 25 82 69 77 82 66 80 50 52 65 68 66 66 82 80 29 68 57 68 29 66 59 80 50 29 25 20 80 69 55 82 82 29 50 25 77 68 89 50 66 36 52 80 50 20 61 68 29 11 66 36 82 20 69 77 20 82 77 68 52 36 50 29 82
ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE
wallis_cipher
wallis_cipher
null
{}
hard
en
98
98
synthetic_educational
null
null
[ "number_substitution_decode", "frequency_analysis" ]
Wallis cipher: each letter mapped to a unique two-digit number from a fixed table.
slidex-v3-0244
KPTPAXIKUWXUXJUNMU
KPTPAXIKUWXUXJUNMU
GRAVITY EXPLAINS ALL
slidex
slidex
transposition
{ "type": "keyword", "value": "FREEDOM" }
advanced
en
18
18
cipher_museum
2.0
public
null
null
scytale-308
HLPSTOXODOIINX
HLPSTOXODOIINX
HOLD POSITION
scytale
scytale
transposition
{ "type": "integer", "value": 7 }
intermediate
en
14
14
cipher_museum
0.2
public
null
null
vic-v3-0202
8139291939205
8139291939205
DEUS VULT
vic
vic
substitution
{ "type": "keyword", "value": "LIBERTY" }
advanced
en
13
13
cipher_museum
2.0
public
null
null
cda-0012354
AABB BABA AABA AABB AABA ABBA BBAA AAAB AAAA AABA AAAA AABA BAAA ABAA BAAA ABBB AAAB BBAA BAAB AAAA BAAA BAAA AABA AAAA ABAA BAAB AAAB AAAA AAAA AABA AABB BAAB AABA AAAB AAAB ABBA AABB ABBA ABAA BBBA BAAA AABB ABBA ABAA ABAA AAAB ABAA BAAB AAAA BBAB ABBA AAAB BABA AAAA BBAB ABBA ABAA ABAA BABA ABAA ABAB AAAA BBBA ABBB ...
AABB BABA AABA AABB AABA ABBA BBAA AAAB AAAA AABA AAAA AABA BAAA ABAA BAAA ABBB AAAB BBAA BAAB AAAA BAAA BAAA AABA AAAA ABAA BAAB AAAB AAAA AAAA AABA AABB BAAB AABA AAAB AAAB ABBA AABB ABBA ABAA BBBA BAAA AABB ABBA ABAA ABAA AAAB ABAA BAAB AAAA BBAB ABBA AAAB BABA AAAA BBAB ABBA ABAA ABAA BABA ABAA ABAB AAAA BBBA ABBB ...
HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS
bacon_cipher
bacon_cipher
null
{}
hard
en
650
650
synthetic_educational
null
null
[ "five_bit_decode", "ab_frequency_analysis" ]
Bacon's biliteral cipher: each letter encoded as 5-bit A/B string.
great-cipher-v3-0016
145 113 144 150 100 108 178 133 118 166 141 172
145 113 144 150 100 108 178 133 118 166 141 172
ARCHERS TO THE WALLS
great_cipher
great_cipher
nomenclator
{ "type": "seed", "value": "VERSAILLES" }
expert
en
36
47
cipher_museum
2.0
public
null
null
fialka-v3-0187
GLIOFMNHMSFLYZTZUYYDZEJDBPDATOPJFKWLWJQFZZRBZSNAGHGVHMYQWKSDWPZZGZUPXXTZWWAWZ
GLIOFMNHMSFLYZTZUYYDZEJDBPDATOPJFKWLWJQFZZRBZSNAGHGVHMYQWKSDWPZZGZUPXXTZWWAWZ
THE RIGHT OF THE PEOPLE TO KEEP AND BEAR ARMS SHALL NOT BE INFRINGED BY THE FEDERAL GOVERNMENT
fialka
fialka
machine
{ "type": "seed", "value": "KREMLIN" }
expert
en
77
77
cipher_museum
2.0
public
null
null
m209-v3-0226
MLZEBYZKGXOLWBYPJMJ
MLZEBYZKGXOLWBYPJMJ
TREACHERY IN THE COURT
m209
m209
machine
{ "type": "seed", "value": "LIBERTY" }
expert
en
19
19
cipher_museum
2.0
public
null
null
cda-0017178
.... .. .-.. .-.. / -.-. .. .--. .... . .-. / ..- ... . ... / .-.. .. -. . .- .-. / .- .-.. --. . -... .-. .- / - --- / . -. -.-. .-. -.-- .--. - / -... .-.. --- -.-. -.- ... / --- ..-. / .-.. . - - . .-. ... / .. -. -.. . -..- / --- ..-. / -.-. --- .. -. -.-. .. -.. . -. -.-. . / -- . .- ... ..- .-. . ... / .-.. . - -...
.... .. .-.. .-.. / -.-. .. .--. .... . .-. / ..- ... . ... / .-.. .. -. . .- .-. / .- .-.. --. . -... .-. .- / - --- / . -. -.-. .-. -.-- .--. - / -... .-.. --- -.-. -.- ... / --- ..-. / .-.. . - - . .-. ... / .. -. -.. . -..- / --- ..-. / -.-. --- .. -. -.-. .. -.. . -. -.-. . / -- . .- ... ..- .-. . ... / .-.. . - -...
HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE
morse_code
morse_code
null
{}
hard
en
143
143
synthetic_educational
null
null
[ "symbol_decode", "frequency_analysis" ]
Morse code: dots and dashes; word-separated by / symbol.
rail-fence-v3-0014
LBOWRWAIERDRDGTEEH
LBOWRWAIERDRDGTEEH
LOWER THE DRAWBRIDGE
rail_fence
rail_fence
transposition
{ "type": "integer", "value": 7 }
intermediate
en
18
18
cipher_museum
2.0
public
null
null
commercial-code-v2-0013
ZUZUZ XAZUZ ZAZUZ BAZUZ GEZUZ XUZUZ BABAB ZUZUZ DAZUZ SAZUZ BEZUZ WAZUZ XAZUZ GAZUZ XUZUZ
ZUZUZ XAZUZ ZAZUZ BAZUZ GEZUZ XUZUZ BABAB ZUZUZ DAZUZ SAZUZ BEZUZ WAZUZ XAZUZ GAZUZ XUZUZ
STAY THE COURSE
commercial_code
commercial_code
codebook
{ "type": "none", "value": null }
expert
en
75
89
cipher_museum
2.0
public
null
null
venona-pad-reuse-012
VENNPGGGSJQMPMPU
VENNPGGGSJQMPMPU
CIPHER KEY CHANGED
venona_pad_reuse
venona_pad_reuse
stream
{ "type": "keyword", "value": "XMCKL" }
expert
en
16
16
cipher_museum
0.2
public
null
null
alberti-disk-293
WASXRSIXABNBBTGYQWHKWEKEDVDBMWIPVCSSXJEMTFMNWMNTLUENQHOAHXHZ
WASXRSIXABNBBTGYQWHKWEKEDVDBMWIPVCSSXJEMTFMNWMNTLUENQHOAHXHZ
LET JUSTICE BE DONE THOUGH THE HEAVENS FALL AND THE STARS GO DARK FOREVER
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 22 }
expert
en
60
60
cipher_museum
0.2
public
null
null
alberti-disk-v3-0177
DIVOMFVDMUAHGKGGQHOAYRHEYJULOKNQRCPDWPJJSDELIYQVMPDPJKLCQYOFGGZKDDLNMLWWZASUUI
DIVOMFVDMUAHGKGGQHOAYRHEYJULOKNQRCPDWPJJSDELIYQVMPDPJKLCQYOFGGZKDDLNMLWWZASUUI
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": 5 }
expert
en
78
78
cipher_museum
2.0
public
null
null
beaufort-214
KLGRMALABNMAEZJJSPAWJVEBZXYVQCALOMLLGAK
KLGRMALABNMAEZJJSPAWJVEBZXYVQCALOMLLGAK
IT WAS THE BEST OF TIMES IT WAS THE WORST OF TIMES
beaufort
beaufort
polyalphabetic
{ "type": "keyword", "value": "SECRET" }
intermediate
en
39
39
cipher_museum
0.2
public
null
null
cda-0006783
FAVHDSCTEYOOTMEELREYARAHIELESNENSLSQUIWTTICTNGIINEHESENCAESDDMTHAEETFKACYNCRUXNTXXECOSIIRANEPEEFEKX
FAVHDSCTEYOOTMEELREYARAHIELESNENSLSQUIWTTICTNGIINEHESENCAESDDMTHAEETFKACYNCRUXNTXXECOSIIRANEPEEFEKX
FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH
stager_route
stager_route
null
{ "cols": 11 }
hard
en
99
99
synthetic_educational
null
null
[ "column_count_search", "route_pattern_search" ]
Route (Stager) cipher: write into rectangle, read via alternating column route.
rail-fence-v2-0697
IEAANTDHNFCTATTDEEHEHRDHOEREAATFBCHERNDEDEEKOEGOAHNPEIGVTEUPNGEDSSNNNNSAIAW
IEAANTDHNFCTATTDEEHEHRDHOEREAATFBCHERNDEDEEKOEGOAHNPEIGVTEUPNGEDSSNNNNSAIAW
IN THE BEGINNING GOD CREATED THE HEAVEN AND THE EARTH AND DARKNESS WAS UPON THE FACE OF DEEP
rail_fence
rail_fence
transposition
{ "type": "integer", "value": 12 }
intermediate
en
75
75
cipher_museum
2.0
public
null
null
cda-0007026
TIG EIXZ SMBCZZF GWEN OAYMA QFD MFVKSI LHQUC
TIG EIXZ SMBCZZF GWEN OAYMA QFD MFVKSI LHQUC
THE BEST LESSONS SHOW WHERE THE METHOD FAILS
trithemius
trithemius
null
{}
medium
en
37
37
synthetic_educational
null
null
[]
kama-sutra-v2-0030
KUZMCD HIYVMZ QGL HYQL
KUZMCD HIYVMZ QGL HYQL
WISDOM GUARDS THE GATE
kama_sutra
kama_sutra
substitution
{ "type": "keyword", "value": "SANSKRIT" }
intermediate
en
19
22
cipher_museum
2.0
public
null
null
m94-v3-0110
JWCGBJPOOHMORDRISIQD
JWCGBJPOOHMORDRISIQD
THE ALCHEMIST SUCCEEDS
m94
m94
machine
{ "type": "seed", "value": "FREEDOM" }
expert
en
20
20
cipher_museum
2.0
public
null
null
confederate-vigenere-v2-0156
NQUKAATXRZFZFVRJRBG
NQUKAATXRZFZFVRJRBG
WISDOM GUARDS THE GATE
confederate_vigenere
confederate_vigenere
polyalphabetic
{ "type": "keyword", "value": "RICHMOND" }
intermediate
en
19
19
cipher_museum
2.0
public
null
null
kama-sutra-v3-0219
WBT LWGZW RGWEZW JMTYW
WBT LWGZW RGWEZW JMTYW
AVE MARIA GRATIA PLENA
kama_sutra
kama_sutra
substitution
{ "type": "keyword", "value": "INDIA" }
intermediate
en
19
22
cipher_museum
2.0
public
null
null
trifid-v2-0136
OJTBJTOEIKRTAAIOBGHJN
OJTBJTOEIKRTAAIOBGHJN
BRIDGE DESTROYED AT DAWN
trifid
trifid
fractionation
{ "type": "keyword", "value": "FORTRESS" }
advanced
en
21
21
cipher_museum
2.0
public
null
null