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
venona-pad-reuse-v2-0168
YPFG7HJZMPBCCMPDPRV646MQHZQJ7FTI75LM3GV7H6MIHAD
YPFG7HJZMPBCCMPDPRV646MQHZQJ7FTI75LM3GV7H6MIHAD
THE COURSE OF TRUE LOVE NEVER DID RUN SMOOTH THROUGH AGES
venona_pad_reuse
venona_pad_reuse
stream
{ "type": "keyword", "value": "LIBERTY" }
expert
en
47
47
cipher_museum
2.0
public
null
null
great-cipher-v2-0243
149 157 168 179 143 182 138 176 167 114 135 143 181 119 173 160 158 105 147 155 136 181 158 180 128 112 157 162 149 107 157 152 100 177 174 114 128 157 138 179 125 128 169 170 168 138 148 147 168 109 128 157 138 166 161 176 114 128 157 173 129 100 114 138 126 132 134 128 157 173 129 100 140 166 116 130 128 157 155 168 ...
149 157 168 179 143 182 138 176 167 114 135 143 181 119 173 160 158 105 147 155 136 181 158 180 128 112 157 162 149 107 157 152 100 177 174 114 128 157 138 179 125 128 169 170 168 138 148 147 168 109 128 157 138 166 161 176 114 128 157 173 129 100 114 138 126 132 134 128 157 173 129 100 140 166 116 130 128 157 155 168 ...
FOR I AM PERSUADED THAT NEITHER DEATH NOR LIFE NOR ANGELS NOR PRINCIPALITIES NOR POWERS NOR THINGS PRESENT NOR THINGS TO COME NOR HEIGHT NOR DEPTH NOR ANY OTHER CREATURE SHALL BE ABLE TO SEPARATE US FROM THE LOVE OF GOD
great_cipher
great_cipher
nomenclator
{ "type": "seed", "value": "ROSSIGNOL" }
expert
en
387
515
cipher_museum
2.0
public
null
null
kama-sutra-062
OKVV TA FGZV
OKVV TA FGZV
FLEE AT ONCE
kama_sutra
kama_sutra
substitution
{ "type": "keyword", "value": "CIPHER" }
intermediate
en
10
12
cipher_museum
0.2
public
null
null
bifid-v3-0136
RFRROPFCCGCDUZRBCHSRM
RFRROPFCCGCDUZRBCHSRM
THE TELEGRAPH TRANSMITS
bifid
bifid
fractionation
{ "type": "keyword", "value": "FORTRESS" }
advanced
en
21
21
cipher_museum
2.0
public
null
null
cda-0008831
TIEMU ETSPS MLAAB ATERS ASTHE EHKET CUTEK IMIFT DTHHE OCART UMAEI IEONS XGRRE VDRIL UCHRD SDEES NECX
TIEMU ETSPS MLAAB ATERS ASTHE EHKET CUTEK IMIFT DTHHE OCART UMAEI IEONS XGRRE VDRIL UCHRD SDEES NECX
THE ARCHITECTURE SHOULD MAKE MISUSE HARDER THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS
stager_route
stager_route
null
{ "cols": 7 }
hard
en
84
84
synthetic_educational
null
null
[]
cda-0002649
PGDZ DIPW DIIB MIIG BKKG DODP GDED PGBU CQTW IDOO BOAB OODA PTBM QMUU DPDA PTBM QODC NMUQ EDMP QWPB IDAN ODIS IPDE I
PGDZ DIPW DIIB MIIG BKKG DODP GDED PGBU CQTW IDOO BOAB OODA PTBM QMUU DPDA PTBM QODC NMUQ EDMP QWPB IDAN ODIS IPDE I
THE BEST LESSONS SHOW WHERE THE METHOD FAILS ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS
monoalphabetic
monoalphabetic
null
{ "alphabet": "QZAUDCHGTYJWEMBFXOIPNVKLSR" }
hard
en
93
93
synthetic_educational
null
null
[ "frequency_analysis", "pattern_words", "hill_climbing_lm" ]
Monoalphabetic substitution with an arbitrary 26-letter permutation.
cda-0002032
VEXCR ZYPMY BLVOW TMJRN AOUWZ ZPCVU ZAVPK XJNNE QKVZH PGMJY SSB
VEXCR ZYPMY BLVOW TMJRN AOUWZ ZPCVU ZAVPK XJNNE QKVZH PGMJY SSB
INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION
beaufort
beaufort
null
{ "key": "DRAGON" }
medium
en
53
53
synthetic_educational
null
null
[ "kasiski_examination", "friedman_test", "index_of_coincidence" ]
Beaufort: E(x)=k-x mod 26 — reciprocal cipher (decryption identical to encryption).
kama-sutra-v2-0053
LXLDA JCVOLZ VLBCVQLM DCRUXH QCKYVM HLQQAZPIVH OYRYEVA GYZ OCXJUVDLM QGL JIEE ZUHGQUXH
LXLDA JCVOLZ VLBCVQLM DCRUXH QCKYVM HLQQAZPIVH OYRYEVA GYZ OCXJUVDLM QGL JIEE ZUHGQUXH
ENEMY FORCES REPORTED MOVING TOWARD GETTYSBURG CAVALRY HAS CONFIRMED THE FULL SIGHTING
kama_sutra
kama_sutra
substitution
{ "type": "keyword", "value": "SANSKRIT" }
intermediate
en
75
86
cipher_museum
2.0
public
null
null
aeneas-tacticus-v2-0014
16 18 5 19 19 20 8 5 1 20 20 1 3 11
16 18 5 19 19 20 8 5 1 20 20 1 3 11
PRESS THE ATTACK
aeneas_tacticus
aeneas_tacticus
steganography
{ "type": "none", "value": null }
expert
en
22
35
cipher_museum
2.0
public
null
null
porta-083
FYYNXFUZLTTVR
FYYNXFUZLTTVR
THE KING IS DEAD
porta
porta
polyalphabetic
{ "type": "keyword", "value": "CIPHER" }
intermediate
en
13
13
cipher_museum
0.2
public
null
null
adfgx-v2-0441
DFFFFDAGFAAXDGDDAGAAGXXGAGDDDFFADGDXAFDXXAAGADGDGDXAAFGAGGGFGGAAFGDFDADGGDDGGGAFAXDAAFGDAAAXGDFDDGGAFXGAGXFFGGAFADGFDDGGDGDDFFDGFAFXAFXXAFGGGAADAGDAGAAAXDDAGDXA
DFFFFDAGFAAXDGDDAGAAGXXGAGDDDFFADGDXAFDXXAAGADGDGDXAAFGAGGGFGGAAFGDFDADGGDDGGGAFAXDAAFGDAAAXGDFDDGGAFXGAGXFFGGAFADGFDDGGDGDDFFDGFAFXAFXXAFGGGAADAGDAGAAAXDDAGDXA
THE SECRET LIES BURIED BENEATH THE THIRD FLAGSTONE OF THE OLD CHURCH COURTYARD AT DAWN TOMORROW
adfgx
adfgx
fractionation
{ "polybius": "DRAGON", "columnar": "THUNDER" }
advanced
en
160
160
cipher_museum
2.0
public
null
null
polybius-it-001
33 15 31 32 15 55 55 34 14 15 31 13 11 32 32 24 33 14 24 33 34 43 44 42 11 51 24 44 11 32 24 42 24 44 42 34 51 11 24 35 15 42 45 33 11 43 15 31 51 11 34 43 13 45 42 11
33 15 31 32 15 55 55 34 14 15 31 13 11 32 32 24 33 14 24 33 34 43 44 42 11 51 24 44 11 32 24 42 24 44 42 34 51 11 24 35 15 42 45 33 11 43 15 31 51 11 34 43 13 45 42 11
NEL MEZZO DEL CAMMIN DI NOSTRA VITA MI RITROVAI PER UNA SELVA OSCURA
polybius
polybius
substitution
{ "type": "none", "value": null }
beginner
it
112
167
cipher_museum
0.2
public
null
null
adfgx-v2-0501
GXGFDAAXXGGADDDAXAAGXAGDDD
GXGFDAAXXGGADDDAXAAGXAGDDD
ANNUIT COEPTIS
adfgx
adfgx
fractionation
{ "polybius": "WISDOM", "columnar": "COURAGE" }
advanced
en
26
26
cipher_museum
2.0
public
null
null
chinese-telegraph-v2-0046
1672 0472 0012 1421 0538 1346 0538 0856 0012 0856 0012 0792 0285 1421 0472 0012 1421 1672 0472 0538 0156 0472 1672 0285 0156 0012 0729 0729 0012 1255 0918 1346 0285 0074 1821 0012 0856 1821 0918 1421 0472 0285 1255 0856 0012 0792 0285 1672 0918 1503 0729 0219 1346 0792 0285 0729 0729 0012 1346 1346 1672 0285 0285 1421
1672 0472 0012 1421 0538 1346 0538 0856 0012 0856 0012 0792 0285 1421 0472 0012 1421 1672 0472 0538 0156 0472 1672 0285 0156 0012 0729 0729 0012 1255 0918 1346 0285 0074 1821 0012 0856 1821 0918 1421 0472 0285 1255 0856 0012 0792 0285 1672 0918 1503 0729 0219 1346 0792 0285 0729 0729 0012 1346 1346 1672 0285 0285 1421
WHAT IS IN A NAME THAT WHICH WE CALL A ROSE BY ANY OTHER NAME WOULD SMELL AS SWEET
chinese_telegraph
chinese_telegraph
codebook
{ "type": "none", "value": null }
expert
en
256
319
cipher_museum
2.0
public
null
null
kl7-137
QALDNOPJMVPSUXS
QALDNOPJMVPSUXS
MEET AT THE OLD OAK
kl7
kl7
machine
{ "type": "seed", "value": "SECRET" }
expert
en
15
15
cipher_museum
0.2
public
null
null
autokey-v2-0741
MYMUDIVYDERZLCKRIKIDWRKWKTLVOTHFMHRUXTHXPXALAFEBMMJORLBYIRBIOMFXHNUREDXPTYSRWSATMIKRCJTTVNGBYXBTYQGPWNUYJCMUTGZJWUWBFDEUYWPTYJVVPVCCPCHAHBGPSAYXDXRH
MYMUDIVYDERZLCKRIKIDWRKWKTLVOTHFMHRUXTHXPXALAFEBMMJORLBYIRBIOMFXHNUREDXPTYSRWSATMIKRCJTTVNGBYXBTYQGPWNUYJCMUTGZJWUWBFDEUYWPTYJVVPVCCPCHAHBGPSAYXDXRH
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
autokey
autokey
polyalphabetic
{ "type": "keyword", "value": "TRIUMPH" }
intermediate
en
148
148
cipher_museum
2.0
public
null
null
cda-0018244
after notes above force flank input notes extra could issue phase hence extra range among point place light incur enter south above local intel north
after notes above force flank input notes extra could issue phase hence extra range among point place light incur enter south above local intel north
AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS
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.
enigma-v2-0409
XSZCLOPWIWKQ
XSZCLOPWIWKQ
VENI VIDI VICI
enigma
enigma
machine
{ "type": "rotor_start", "value": "JKL" }
expert
en
12
12
cipher_museum
2.0
public
null
null
cardano-autokey-v2-0115
KCWLXVUDYBHGGQNFVJWZZRGAUVVRXXIRSTFKRMBREDDTXADPKJDETWWTDZMVVVSFMKRALYHVBXHVLTTXWGTFMQVZKCWWSKMXGHRYJYNQGHPTJFVRTXPJYTMTCMOHEZLNVVLLNQDIZWTFTGWGTYALIQBXZVSTOJPPN
KCWLXVUDYBHGGQNFVJWZZRGAUVVRXXIRSTFKRMBREDDTXADPKJDETWWTDZMVVVSFMKRALYHVBXHVLTTXWGTFMQVZKCWWSKMXGHRYJYNQGHPTJFVRTXPJYTMTCMOHEZLNVVLLNQDIZWTFTGWGTYALIQBXZVSTOJPPN
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
cardano_autokey
cardano_autokey
polyalphabetic
{ "type": "keyword", "value": "MILAN" }
advanced
en
161
161
cipher_museum
2.0
public
null
null
wheatstone-v3-0237
SDAPATILBSQBPAILJEKC
SDAPATILBSQBPAILJEKC
THE REDCOATS ARE COMING
wheatstone
wheatstone
polygraphic
{ "type": "keyword", "value": "BRITAIN" }
advanced
en
20
20
cipher_museum
2.0
public
null
null
sigaba-v2-0224
GUYKXKLXAGNJKDRKXJDPJRHBMDYZXTNCLEODETNVEQZPZVBKOOWXRXBCUVRWUYAWOMRROOVYQTVMRC
GUYKXKLXAGNJKDRKXJDPJRHBMDYZXTNCLEODETNVEQZPZVBKOOWXRXBCUVRWUYAWOMRROOVYQTVMRC
LA LIBERTE GUIDANT LE PEUPLE VERS UN AVENIR MEILLEUR ET PLUS JUSTE POUR TOUS LES HOMMES LIBRES
sigaba
sigaba
machine
{ "type": "seed", "value": "ARMY" }
expert
en
78
78
cipher_museum
2.0
public
null
null
adfgvx-148
AAADAGGAAADFVVXGFDDAXXVADAAADA
AAADAGGAAADFVVXGFDDAXXVADAAADA
EVACUATE THE BASE
adfgvx
adfgvx
fractionation
{ "polybius": "SECRET", "columnar": "AGENTS" }
advanced
en
30
30
cipher_museum
0.2
public
null
null
autokey-v2-0728
ERTCNTYEERCJHRGXRYXHUCEPZTVMJYEQIEALZEDPYMLDIBAWYMAYLIPJGDLLHYHZYJACGEPWDPPDQW
ERTCNTYEERCJHRGXRYXHUCEPZTVMJYEQIEALZEDPYMLDIBAWYMAYLIPJGDLLHYHZYJACGEPWDPPDQW
LA LIBERTE GUIDANT LE PEUPLE VERS UN AVENIR MEILLEUR ET PLUS JUSTE POUR TOUS LES HOMMES LIBRES
autokey
autokey
polyalphabetic
{ "type": "keyword", "value": "TRIUMPH" }
intermediate
en
78
78
cipher_museum
2.0
public
null
null
kryptos-v3-0348
NBKTQOULOVZFJFFHDZ
NBKTQOULOVZFJFFHDZ
GRAVITY EXPLAINS ALL
kryptos
kryptos
polyalphabetic
{ "type": "keyword", "value": "SANBORN" }
advanced
en
18
18
cipher_museum
2.0
public
null
null
fractionated-morse-v2-0390
LEFSABLIMHBDWPNJTEEFSEBE
LEFSABLIMHBDWPNJTEEFSEBE
MISSION ACCOMPLISHED
fractionated_morse
fractionated_morse
fractionation
{ "type": "keyword", "value": "FREEDOM" }
advanced
en
24
24
cipher_museum
2.0
public
null
null
vigenere-es-016
RIIYMRNQQLVKCLDTYVTBT
RIIYMRNQQLVKCLDTYVTBT
PATRIA LIBERTAD O MUERTE
vigenere
vigenere
polyalphabetic
{ "type": "keyword", "value": "CIPHER" }
intermediate
es
21
21
cipher_museum
0.2
public
null
null
geez-monastic-v3-0191
IJTTSEVQZQZPJESTJZBZSZAIFOSOQEPZHSXQRTFOYCOAAERHTATIIESVAQZUESVEIATTQXSRFTZUZRHT
IJTTSEVQZQZPJESTJZBZSZAIFOSOQEPZHSXQRTFOYCOAAERHTATIIESVAQZUESVEIATTQXSRFTZUZRHT
THE ENIGMA MACHINE HAD AN ASTRONOMICAL NUMBER OF POSSIBLE SETTINGS MAKING IT SEEM UNBREAKABLE
geez_monastic
geez_monastic
substitution
{ "type": "keyword", "value": "AXUM" }
advanced
en
80
80
cipher_museum
2.0
public
null
null
voynich-render-v2-0045
gckx oaivd off gi gckrd ijr xdfs ad gqzd ore kg lzxg siffij ox rkhcg gcd eou
gckx oaivd off gi gckrd ijr xdfs ad gqzd ore kg lzxg siffij ox rkhcg gcd eou
THIS ABOVE ALL TO THINE OWN SELF BE TRUE AND IT MUST FOLLOW AS NIGHT THE DAY
voynich_render
voynich_render
substitution
{ "type": "none", "value": null }
expert
en
60
76
cipher_museum
2.0
public
null
null
cda-0019931
AAABA BAAAA BABBA ABBBA BAABA ABBAB AABBA BAAAA AAAAA ABBBA AABBB BABBA BAAAA AABAA BABAA AAAAA BAAAA AAABB BAAAB ABBBA AAAAA BAABA ABAAA AABAA ABBAA AAABA AABAA AAAAA ABBAA AAABB AAABA AAAAA BAAAA AABAA AABAB BAABB ABABA BAABA AABBB ABAAA ABBAA ABAAB ABAAA ABBAA AABBA AABBB ABAAA ABABA ABABA AAABA ABAAA ABBBA AABBB AA...
AAABA BAAAA BABBA ABBBA BAABA ABBAB AABBA BAAAA AAAAA ABBBA AABBB BABBA BAAAA AABAA BABAA AAAAA BAAAA AAABB BAAAB ABBBA AAAAA BAABA ABAAA AABAA ABBAA AAABA AABAA AAAAA ABBAA AAABB AAABA AAAAA BAAAA AABAA AABAB BAABB ABABA BAABA AABBB ABAAA ABBAA ABAAB ABAAA ABBAA AABBA AABBB ABAAA ABABA ABABA AAABA ABAAA ABBBA AABBB AA...
CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS ATBASH ENCODES BY REVERSING THE ALPHABET THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY
bacon_cipher
bacon_cipher
null
{}
hard
en
870
870
synthetic_educational
null
null
[ "five_bit_decode", "ab_frequency_analysis" ]
Bacon's biliteral cipher: each letter encoded as 5-bit A/B string.
diana-v2-0062
YTJVQAOSVUGZKWYZAAOSVZEGGNZNIREHGCSRHWUZSNGSJDQVESAANNNNYGMYXJJODTZHFVTVRHJPM
YTJVQAOSVUGZKWYZAAOSVZEGGNZNIREHGCSRHWUZSNGSJDQVESAANNNNYGMYXJJODTZHFVTVRHJPM
THE LORD IS MY SHEPHERD I SHALL NOT WANT HE MAKETH ME LIE DOWN IN GREEN PASTURES BY STILL WATERS
diana
diana
polyalphabetic
{ "type": "keyword", "value": "RANGER" }
intermediate
en
77
77
cipher_museum
2.0
public
null
null
two-square-198
RAHNWDTDCUGV
RAHNWDTDCUGV
RALLY AT DAWN
two_square
two_square
polygraphic
{ "key1": "ENIGMA", "key2": "CRYPTO" }
advanced
en
12
12
cipher_museum
0.2
public
null
null
cda-0017067
6282 02610 01576 04088 1644 6006 06014 0336 02238 01573 7272 00331 05993 02605 2917 1339 1319 01665 04471 00692 6677 06291 4399 4806 06301 06046 01640 00953 6690 05731 01667 01642 04453 6333 5695 4735 05031 07857 04088 01577 0386 6015 06627 05711 1585 06053 06692 4475 0963 01618 05742 06297 00361 02863 04485 6355 7884 ...
6282 02610 01576 04088 1644 6006 06014 0336 02238 01573 7272 00331 05993 02605 2917 1339 1319 01665 04471 00692 6677 06291 4399 4806 06301 06046 01640 00953 6690 05731 01667 01642 04453 6333 5695 4735 05031 07857 04088 01577 0386 6015 06627 05711 1585 06053 06692 4475 0963 01618 05742 06297 00361 02863 04485 6355 7884 ...
THE MESSAGE WAS HIDDEN BUT NOT SECURE ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION
zimmermann
zimmermann
null
{}
medium
en
72
72
synthetic_educational
null
null
[ "codebook_frequency", "number_group_analysis" ]
Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher.
cda-0014759
YTAII NSHEE DYCHE OLCHO RCHOR OTAIN OKSHY SHARA LCHOL DAINY YPCHO LCHOL DAIIN CHEOL YTAII NOKAI NDAIN YSHAI INSHE OLOKS HYOKA LCHOL RAIIN DARAL QOKED YOKEE DYQOK EDYOX EDOKA LDAII NCHEO L
YTAII NSHEE DYCHE OLCHO RCHOR OTAIN OKSHY SHARA LCHOL DAINY YPCHO LCHOL DAIIN CHEOL YTAII NOKAI NDAIN YSHAI INSHE OLOKS HYOKA LCHOL RAIIN DARAL QOKED YOKEE DYQOK EDYOX EDOKA LDAII NCHEO L
OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER
voynich_render
voynich_render
null
{}
hard
en
156
156
synthetic_educational
null
null
[ "statistical_analysis", "unsolved" ]
Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output.
cda-0022004
WRTIZKS ZMW GIRTIZKS UIVJFVMXRVH VCKLHV HRNKOV XRKSVIH YIFGV ULIXV DLIPH LMOB DSVM GSV PVB HKZXV RH HNZOO YVZFULIG RH GSV IVXRKILXZO LU ERTVMVIV ZMW WVXIBKGH RGHVOU ZODZBH
WRTIZKS ZMW GIRTIZKS UIVJFVMXRVH VCKLHV HRNKOV XRKSVIH YIFGV ULIXV DLIPH LMOB DSVM GSV PVB HKZXV RH HNZOO YVZFULIG RH GSV IVXRKILXZO LU ERTVMVIV ZMW WVXIBKGH RGHVOU ZODZBH
DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF ALWAYS
atbash
atbash
null
{}
hard
en
145
145
synthetic_educational
null
null
[ "self_inverse_check", "frequency_analysis" ]
Atbash maps A↔Z, B↔Y, … and is its own inverse.
solitaire-v2-0180
EWVYQLBUVEOGPJMMVPWLJTOSLTMSCXJXJWGHOMJFXFSEFNIUHLFAWIJSZGLGUCSKQKVQIDZUQKI
EWVYQLBUVEOGPJMMVPWLJTOSLTMSCXJXJWGHOMJFXFSEFNIUHLFAWIJSZGLGUCSKQKVQIDZUQKI
ARMY OF THE POTOMAC CROSSES THE RAPPAHANNOCK TONIGHT ABSOLUTE SILENCE IS IMPERATIVE NOW
solitaire
solitaire
stream
{ "type": "passphrase", "value": "SCHNEIER" }
expert
en
75
75
cipher_museum
2.0
public
null
null
lorenz-205
EVACUATETHEBASE
EVACUATETHEBASE
EVACUATE THE BASE
lorenz
lorenz
machine
{ "type": "seed", "value": "MUSEUM" }
expert
en
15
15
cipher_museum
0.2
public
null
null
bacon-cipher-v2-0028
AAABA ABBAB BAABB BAAAA AAAAA AABBA AABAA ABAAA ABBAA AAABB AAAAA BAAAA ABAAB ABBAA AABAA BAAAB BAAAB
AAABA ABBAB BAABB BAAAA AAAAA AABBA AABAA ABAAA ABBAA AAABB AAAAA BAAAA ABAAB ABBAA AABAA BAAAB BAAAB
COURAGE IN DARKNESS
bacon_cipher
bacon_cipher
steganography
{ "type": "none", "value": null }
beginner
en
85
101
cipher_museum
2.0
public
null
null
porta-v2-0666
SVVRMMLHEVYNMU
SVVRMMLHEVYNMU
LIBERTY OR DEATH
porta
porta
polyalphabetic
{ "type": "keyword", "value": "PAPAL" }
intermediate
en
14
14
cipher_museum
2.0
public
null
null
cda-0010494
QBAB GPBA SHFR BOSH FPNG VBAJ VGUR APEL CGVB AGUR IVTR ARER PVCU REHF RFNE RCRN GVAT XRLJ BEQO EHGR SBEP RJBE XFBA YLJU RAGU RXRL FCNP RVFF ZNYY
QBAB GPBA SHFR BOSH FPNG VBAJ VGUR APEL CGVB AGUR IVTR ARER PVCU REHF RFNE RCRN GVAT XRLJ BEQO EHGR SBEP RJBE XFBA YLJU RAGU RXRL FCNP RVFF ZNYY
DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION THE VIGENERE CIPHER USES A REPEATING KEYWORD BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL
rot13
rot13
null
{ "shift": 13 }
hard
en
116
116
synthetic_educational
null
null
[]
trifid-v3-0151
DOIULREEGFYPECIFHMZIPMQEFATLSIDTDLCFSLHLVTAQJAZTTDFFIJWTPCADFFNOSBEDNSNOJGAMASTUFARDSCDD
DOIULREEGFYPECIFHMZIPMQEFATLSIDTDLCFSLHLVTAQJAZTTDFFIJWTPCADFFNOSBEDNSNOJGAMASTUFARDSCDD
IT IS A TRUTH UNIVERSALLY ACKNOWLEDGED THAT A SINGLE MAN IN POSSESSION OF A FORTUNE MUST BE IN WANT OF A WIFE
trifid
trifid
fractionation
{ "type": "keyword", "value": "FORTRESS" }
advanced
en
88
88
cipher_museum
2.0
public
null
null
cda-0005349
AHLLG MXOZM VBJGP AKMGH SRZXZ HPAJH KGLYQ BDKBL YLDLY ZXLMH XBAZB YLYZX QYAJG MBMGH MMHXN GPGLL GMBOY LJZDL BDKBL YLDLY ZXKMD LGTZM QGOZM SBZXP UOJGX LJGSG UBAHQ GYBBR HPP
AHLLG MXOZM VBJGP AKMGH SRZXZ HPAJH KGLYQ BDKBL YLDLY ZXLMH XBAZB YLYZX QYAJG MBMGH MMHXN GPGLL GMBOY LJZDL BDKBL YLDLY ZXKMD LGTZM QGOZM SBZXP UOJGX LJGSG UBAHQ GYBBR HPP
PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL
monoalphabetic
monoalphabetic
null
{ "alphabet": "HKQVGTNJYWSPRXZAFMBLDCOEUI" }
hard
en
143
143
synthetic_educational
null
null
[ "frequency_analysis", "pattern_words", "hill_climbing_lm" ]
Monoalphabetic substitution with an arbitrary 26-letter permutation.
monoalphabetic-v3-1008
RBO GKUO KM HKJOY CQ RBO PKKR KM WGG OUCG ITR CR CQ RBO GKUO KM AKKD RBWR HKUOQ RBO VKPGD
RBO GKUO KM HKJOY CQ RBO PKKR KM WGG OUCG ITR CR CQ RBO GKUO KM AKKD RBWR HKUOQ RBO VKPGD
THE LOVE OF MONEY IS THE ROOT OF ALL EVIL BUT IT IS THE LOVE OF GOOD THAT MOVES THE WORLD
monoalphabetic
monoalphabetic
substitution
{ "type": "keyword", "value": "WISDOM" }
beginner
en
69
89
cipher_museum
2.0
public
null
null
alberti-disk-v2-0605
HSXCCHQOTAIWSJXHAAQWMYQKETPBUHLXDOUUTMTGKSTOYISPRFAISJROYAIBCRUEYEAPKBHHWIFHO
HSXCCHQOTAIWSJXHAAQWMYQKETPBUHLXDOUUTMTGKSTOYISPRFAISJROYAIBCRUEYEAPKBHHWIFHO
DEUTSCHLAND UBER ALLES IN DER WELT WENN ES STETS ZU SCHUTZ UND TRUTZE BRÜDERLICH ZUSAMMENHÄLT
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 11 }
expert
en
77
77
cipher_museum
2.0
public
null
null
vernam-v2-0166
JNYJMGHBVTLGUICPCRLKIVCJAQXAEIMYHLZTAFQTZBWDZSEKIFBIDQRUXPMBOCDAQLOUJVWVXAN
JNYJMGHBVTLGUICPCRLKIVCJAQXAEIMYHLZTAFQTZBWDZSEKIFBIDQRUXPMBOCDAQLOUJVWVXAN
TRUST IN THE LORD WITH ALL THINE HEART AND LEAN NOT UNTO THINE OWN UNDERSTANDING IN ALL WAYS
vernam
vernam
stream
{ "type": "pad", "value": "QWERTY (repeating)" }
expert
en
75
75
cipher_museum
2.0
public
null
null
diana-v3-0119
ZIAKAWFOOAWANT
ZIAKAWFOOAWANT
THE SIEGE BEGINS
diana
diana
polyalphabetic
{ "type": "keyword", "value": "SPECIAL" }
intermediate
en
14
14
cipher_museum
2.0
public
null
null
sigaba-v2-0325
GUDLJVRKEDHFNDFCSRQLZGPDYSUSGWEPUJNEGJLBWGLLMAFUJZEFSWBOKWVNMKPOBWYBHZPMM
GUDLJVRKEDHFNDFCSRQLZGPDYSUSGWEPUJNEGJLBWGLLMAFUJZEFSWBOKWVNMKPOBWYBHZPMM
THE SECRET OF GETTING AHEAD IS GETTING STARTED ONE STEP AT A TIME GETS YOU VERY FAR INDEED
sigaba
sigaba
machine
{ "type": "seed", "value": "FREEDOM" }
expert
en
73
73
cipher_museum
2.0
public
null
null
argenti-082
11 78 27 89 31 28 72 87 24 70 19 53 69 87 88 30 53 76
11 78 27 89 31 28 72 87 24 70 19 53 69 87 88 30 53 76
AWAIT FURTHER ORDERS
argenti
argenti
nomenclator
{ "type": "seed", "value": "CIPHER" }
expert
en
36
53
cipher_museum
0.2
public
null
null
pigpen-043
╳ ┬ ┼ ┬• ╱ ┐ ¬ ┴• ┴ ┐• ┤• ╳• ┼• ┤ ┤• ╱• ⌐• ╱ ├• ┌• ╲ ┤• ╲• ┼ ┐• ╳ ┬ ┼ ¬• ⌐ △ ▽ ├ ┤• ┌ ┼• ┼ ⌐ ┐• ╳ ┬ ┼ ┐• ┐ ╲• ┼ ┐•
╳ ┬ ┼ ┬• ╱ ┐ ¬ ┴• ┴ ┐• ┤• ╳• ┼• ┤ ┤• ╱• ⌐• ╱ ├• ┌• ╲ ┤• ╲• ┼ ┐• ╳ ┬ ┼ ¬• ⌐ △ ▽ ├ ┤• ┌ ┼• ┼ ⌐ ┐• ╳ ┬ ┼ ┐• ┐ ╲• ┼ ┐•
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG NEAR THE RIVER
pigpen
pigpen
substitution
{ "type": "none", "value": null }
beginner
en
68
114
cipher_museum
0.2
public
null
null
argenti-v3-0265
75 29 39 44 24 71 38 39 42 25 63 44 57 41 11 67 69 38 88 75 20 28 15 77 29 44 42 71 11 27 69 24 59 13 18 87 38 36 44 29 16 64 28 57 49 11 46 63 61 64 33 75 69 28 87 21 20 23 11 38 28 77 63 42 39 29 44 87 38 11 10
75 29 39 44 24 71 38 39 42 25 63 44 57 41 11 67 69 38 88 75 20 28 15 77 29 44 42 71 11 27 69 24 59 13 18 87 38 36 44 29 16 64 28 57 49 11 46 63 61 64 33 75 69 28 87 21 20 23 11 38 28 77 63 42 39 29 44 87 38 11 10
TO INFINITY AND BEYOND THE FRONTIER OF HUMAN KNOWLEDGE CALLS TO EACH GENERATION ANEW
argenti
argenti
nomenclator
{ "type": "seed", "value": "VATICAN" }
expert
en
142
212
cipher_museum
2.0
public
null
null
cda-0019770
posts upper board lower intel carry intel needs first route after swift three right until carry track until raids early daily enter swift enemy right
posts upper board lower intel carry intel needs first route after swift three right until carry track until raids early daily enter swift enemy right
PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN
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.
enigma-v3-0106
EICTRQUHWRSCGUTMMI
EICTRQUHWRSCGUTMMI
CROSS THE RUBICON NOW
enigma
enigma
machine
{ "type": "rotor_start", "value": "DEF" }
expert
en
18
18
cipher_museum
2.0
public
null
null
double-transposition-043
OHOEDMUGTCEUQOPINJREFIASHYNRLOVXEHKAERTTZWEVBRR
OHOEDMUGTCEUQOPINJREFIASHYNRLOVXEHKAERTTZWEVBRR
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG NEAR THE RIVER
double_transposition
double_transposition
transposition
{ "key1": "FIRST", "key2": "SECOND" }
advanced
en
47
47
cipher_museum
0.2
public
null
null
nomenclator-v2-0093
60 16 01 03 11 01 07 05 03 15 14 20 01 09 14 19 02 12 21 05 16 18 09 14 20 19 06 15 18 60 14 05 23 20 15 18 16 05 04 15 07 21 09 04 01 14 03 05 19 25 19 20 05 13 04 05 12 09 22 05 18 63 01 04 13 09 18 01 12 19 13 09 20 08 14 15 23
60 16 01 03 11 01 07 05 03 15 14 20 01 09 14 19 02 12 21 05 16 18 09 14 20 19 06 15 18 60 14 05 23 20 15 18 16 05 04 15 07 21 09 04 01 14 03 05 19 25 19 20 05 13 04 05 12 09 22 05 18 63 01 04 13 09 18 01 12 19 13 09 20 08 14 15 23
THE PACKAGE CONTAINS BLUEPRINTS FOR THE NEW TORPEDO GUIDANCE SYSTEM DELIVER TO ADMIRAL SMITH NOW
nomenclator
nomenclator
nomenclator
{ "type": "none", "value": null }
expert
en
154
230
cipher_museum
2.0
public
null
null
sigaba-v2-0018
FBXPCBYNNMORZ
FBXPCBYNNMORZ
AWAIT MY SIGNAL
sigaba
sigaba
machine
{ "type": "seed", "value": "ECMMARK" }
expert
en
13
13
cipher_museum
2.0
public
null
null
great-cipher-v3-0263
142 133 125 143 151 170 147 176 181 175 103 109 121 178 121 150 154 104 141 158 146 119 180 118 103 109 178 150 154 170 147 176 181 175 142 133 125 143 151 104 169 109 159 142 158 125 118 137 129 138 152 115 160 135 140 160
142 133 125 143 151 170 147 176 181 175 103 109 121 178 121 150 154 104 141 158 146 119 180 118 103 109 178 150 154 170 147 176 181 175 142 133 125 143 151 104 169 109 159 142 158 125 118 137 129 138 152 115 160 135 140 160
SCIENCE WITHOUT RELIGION IS LAME AND RELIGION WITHOUT SCIENCE IS BLIND SAID ALBERT EINSTEIN
great_cipher
great_cipher
nomenclator
{ "type": "seed", "value": "FRANCE" }
expert
en
168
223
cipher_museum
2.0
public
null
null
alberti-disk-v3-0608
RLQQOQSBQOKZBYRCAXTLDGOLVHPXYOXNKMTKGIUYSMTXOWGGETCQXXHQDODSLZPUZDUCJUTJGFZFMXAHIPH
RLQQOQSBQOKZBYRCAXTLDGOLVHPXYOXNKMTKGIUYSMTXOWGGETCQXXHQDODSLZPUZDUCJUTJGFZFMXAHIPH
DIFFIE AND HELLMAN INVENTED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX CHANGING EVERYTHING
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 14 }
expert
en
83
83
cipher_museum
2.0
public
null
null
fractionated-morse-v3-0414
NFULMIFAPXMIOAIKTLBDXGAIKSPIFBXKWAXFATBSEBIDUMNSBSBDSUINADSVILEIGSBLRBSEBTNVXEBSEHAVXRTBOSVTTAPDUPLGAMEDBENFUMPLLEHBFWPPFVEADWNIBAPGSWATBNPBOVIKSNGVBEKSBLNFUADSIKTBVIFAPBIBENFUOWNIDBERBLDUFNTC
NFULMIFAPXMIOAIKTLBDXGAIKSPIFBXKWAXFATBSEBIDUMNSBSBDSUINADSVILEIGSBLRBSEBTNVXEBSEHAVXRTBOSVTTAPDUPLGAMEDBENFUMPLLEHBFWPPFVEADWNIBAPGSWATBNPBOVIKSNGVBEKSBLNFUADSIKTBVIFAPBIBENFUOWNIDBERBLDUFNTC
THE MANHATTAN PROJECT BROUGHT TOGETHER THE GREATEST SCIENTIFIC MINDS OF THE TWENTIETH CENTURY IN A RACE TO BUILD THE ATOMIC BOMB BEFORE NAZI GERMANY COULD DO SO THE EFFORT CHANGED THE WORLD FOREVER
fractionated_morse
fractionated_morse
fractionation
{ "type": "keyword", "value": "FREEDOM" }
advanced
en
192
192
cipher_museum
2.0
public
null
null
bazeries-v2-0838
IAPUTMVIAHHSLPITGTTEGAPLSJTSPMVTLNHIHGTPNTTLISTJPBPJMSFBAIMITAJSMLSPHHSXEISLTMNTR
IAPUTMVIAHHSLPITGTTEGAPLSJTSPMVTLNHIHGTPNTTLISTJPBPJMSFBAIMITAJSMLSPHHSXEISLTMNTR
THOSE WHO CANNOT REMEMBER THE PAST ARE CONDEMNED TO REPEAT IT AS PHILOSOPHER SANTAYANA OBSERVED
bazeries
bazeries
transposition
{ "type": "integer", "value": 71 }
advanced
en
81
81
cipher_museum
2.0
public
null
null
cardano-autokey-020
ETPNIHUXRPWFPLFPW
ETPNIHUXRPWFPLFPW
CRYPTOGRAPHY RULES
cardano_autokey
cardano_autokey
polyalphabetic
{ "type": "keyword", "value": "CARDANO" }
advanced
en
17
17
cipher_museum
0.2
public
null
null
straddling-checkerboard-128
2542822704683845
2542822704683845
HOLD POSITION
straddling_checkerboard
straddling_checkerboard
substitution
{ "type": "top_row", "value": "EATONSIRE" }
advanced
en
16
16
cipher_museum
0.2
public
null
null
cda-0019161
23 45 32 11 33 42 15 11 14 11 12 31 15 34 45 44 35 45 44 43 23 34 45 31 14 43 23 34 52 11 31 31 42 15 11 43 34 33 24 33 22 43 44 15 35 43 44 23 15 21 42 24 15 14 32 11 33 44 15 43 44 45 43 15 43 44 23 15 24 33 14 15 53 34 21 13 34 24 33 13 24 14 15 33 13 15 44 34 15 43 44 24 32 11 44 15 25 15 54 31 15 33 22 44 23
23 45 32 11 33 42 15 11 14 11 12 31 15 34 45 44 35 45 44 43 23 34 45 31 14 43 23 34 52 11 31 31 42 15 11 43 34 33 24 33 22 43 44 15 35 43 44 23 15 21 42 24 15 14 32 11 33 44 15 43 44 45 43 15 43 44 23 15 24 33 14 15 53 34 21 13 34 24 33 13 24 14 15 33 13 15 44 34 15 43 44 24 32 11 44 15 25 15 54 31 15 33 22 44 23
HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH
polybius
polybius
null
{}
hard
en
105
105
synthetic_educational
null
null
[ "pair_decode", "frequency_analysis" ]
Polybius square: 5×5 grid maps letters to two-digit row-column pairs.
m209-v2-0170
BPIFLZKBVWRCQDMTQZMBZXPLYMYAUKZABKUKJXWHEUUDQJQZJYLJELMXYZCIXBHLQPAZ
BPIFLZKBVWRCQDMTQZMBZXPLYMYAUKZABKUKJXWHEUUDQJQZJYLJELMXYZCIXBHLQPAZ
COWARDS DIE MANY TIMES BEFORE THEIR DEATHS THE VALIANT NEVER TASTE DEATH BUT ONCE
m209
m209
machine
{ "type": "seed", "value": "FREEDOM" }
expert
en
68
68
cipher_museum
2.0
public
null
null
jefferson-disk-v2-0222
QYPMBIMUKZVBSUSKSLHBB
QYPMBIMUKZVBSUSKSLHBB
BRIDGE DESTROYED AT DAWN
jefferson_disk
jefferson_disk
disk
{ "type": "disk_order", "value": "1,3,5,2,4,6" }
expert
en
21
21
cipher_museum
2.0
public
null
null
chaocipher-v2-0612
CJELGLFAATIZTMOUNPGVVXDBUAYOBBFBMVOETLKLVWFFEOITFJAXDZZCHLGZCWQVECIEJOLAEQSJTYZYBBEARNIVNMNPMGQZMJFPPGNGBAGVBWVANWRPKICYLTHGCGFWVKKWNFLHEGSYLKL
CJELGLFAATIZTMOUNPGVVXDBUAYOBBFBMVOETLKLVWFFEOITFJAXDZZCHLGZCWQVECIEJOLAEQSJTYZYBBEARNIVNMNPMGQZMJFPPGNGBAGVBWVANWRPKICYLTHGCGFWVKKWNFLHEGSYLKL
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
chaocipher
chaocipher
machine
{ "type": "keyword", "value": "TRIUMPH" }
advanced
en
143
143
cipher_museum
2.0
public
null
null
two-square-220
SIMOMAMYLMLXUYPOSYUYNLDETHIQVDRTDHPHERACCOTAINEQYWITHGUAFCCAUA
SIMOMAMYLMLXUYPOSYUYNLDETHIQVDRTDHPHERACCOTAINEQYWITHGUAFCCAUA
THE ENEMY KNOWS THE SYSTEM DESIGN YOUR CIPHER ACCORDINGLY WITH GREAT CARE
two_square
two_square
polygraphic
{ "key1": "ENIGMA", "key2": "CRYPTO" }
advanced
en
62
62
cipher_museum
0.2
public
null
null
cda-0021239
9.25.8 13.18.6 1.9.11 18.24.12 5.21.6 20.35.9 17.9.1 19.12.3 7.48.4 5.3.10 2.28.2 5.22.4 15.21.15 18.47.15 11.12.10 20.48.6 8.27.2 15.30.5 16.9.9 1.38.1 9.27.3 8.2.15 17.13.3 12.14.14 9.4.2 4.21.9 2.5.3 1.36.13 18.10.1 1.41.12 3.16.12 14.39.12 4.14.11 10.10.11 20.28.14 11.41.10 20.10.14 10.41.4 19.45.6 18.28.11 10.35.1...
9.25.8 13.18.6 1.9.11 18.24.12 5.21.6 20.35.9 17.9.1 19.12.3 7.48.4 5.3.10 2.28.2 5.22.4 15.21.15 18.47.15 11.12.10 20.48.6 8.27.2 15.30.5 16.9.9 1.38.1 9.27.3 8.2.15 17.13.3 12.14.14 9.4.2 4.21.9 2.5.3 1.36.13 18.10.1 1.41.12 3.16.12 14.39.12 4.14.11 10.10.11 20.28.14 11.41.10 20.10.14 10.41.4 19.45.6 18.28.11 10.35.1...
ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY
book_cipher
book_cipher
null
{}
hard
en
84
84
synthetic_educational
null
null
[ "book_cipher_attack", "triple_index_search" ]
Book cipher: coordinates (page.line.word) referencing a shared document.
wallis-cipher-v3-0049
90 33 55 91 90 45 81 24 91 90 87 91 90 59 63 28 22 61 10 91 90 37 42 60 82 91 90 21 81 86 91 90 33 34 91 90 87 14 53 28 52 91 90 81 85 82 91 90 55 23 56 91 90 48 60 89 37 38 43 91 90 13 54 63 56 91 90 24 10 53 33 66 28 34 39 91 90 55 61 33 63 10 54 56 85 91 90 87 48 53 42 43 24 91 90 55 23 54 91 90 37 28 10 46 91
90 33 55 91 90 45 81 24 91 90 87 91 90 59 63 28 22 61 10 91 90 37 42 60 82 91 90 21 81 86 91 90 33 34 91 90 87 14 53 28 52 91 90 81 85 82 91 90 55 23 56 91 90 48 60 89 37 38 43 91 90 13 54 63 56 91 90 24 10 53 33 66 28 34 39 91 90 55 61 33 63 10 54 56 85 91 90 87 48 53 42 43 24 91 90 55 23 54 91 90 37 28 10 46 91
IT WAS A BRIGHT COLD DAY IN APRIL AND THE CLOCKS WERE STRIKING THIRTEEN ACROSS THE CITY
wallis_cipher
wallis_cipher
nomenclator
{ "type": "seed", "value": "OXFORD" }
expert
en
210
314
cipher_museum
2.0
public
null
null
cda-0004443
GUS ZRFFOTS JOF NNQRSA PHG ABG FSQHES WARSK BT QBWAQVRSAQS ZROFHESF YSGGSE TESDHSAQL RWFGENOHGVBA CNGGREA JBERF VSYC PEROX ZBABOYCVNPSGWQ FHPFGWGHGWBA OYJNLF
GUS ZRFFOTS JOF NNQRSA PHG ABG FSQHES WARSK BT QBWAQVRSAQS ZROFHESF YSGGSE TESDHSAQL RWFGENOHGVBA CNGGREA JBERF VSYC PEROX ZBABOYCVNPSGWQ FHPFGWGHGWBA OYJNLF
THE MESSAGE WAS HIDDEN BUT NOT SECURE INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION ALWAYS
porta
porta
null
{ "key": "PATTERN" }
hard
en
137
137
synthetic_educational
null
null
[ "kasiski_examination", "index_of_coincidence" ]
Porta: 13-row table polyalphabetic cipher; reciprocal (encrypt = decrypt).
adfgvx-193
AAFAAAGDDXDAXAXAVFAAADDAFAVFGA
AAFAAAGDDXDAXAXAVFAAADDAFAVFGA
ENEMY FORCES NEAR
adfgvx
adfgvx
fractionation
{ "polybius": "ENIGMA", "columnar": "CRYPTO" }
advanced
en
30
30
cipher_museum
0.2
public
null
null
diana-v3-0048
PACVSNJIGUENGIZUATNAWOELDNJLAAFSADXDVPZTYCAWLYMNGCFNXDXUGNWVDGCDMRJPNFQXYAADMNNHGCQPNAA
PACVSNJIGUENGIZUATNAWOELDNJLAAFSADXDVPZTYCAWLYMNGCFNXDXUGNWVDGCDMRJPNFQXYAADMNNHGCQPNAA
CALL ME ISHMAEL SOME YEARS AGO NEVER MIND HOW LONG PRECISELY I THOUGHT I WOULD SAIL ABOUT AND SEE THE OCEAN
diana
diana
polyalphabetic
{ "type": "keyword", "value": "RANGER" }
intermediate
en
87
87
cipher_museum
2.0
public
null
null
fialka-v2-0171
GLEYUJAZKLIHBBERXRYJMDGDQOUGBKEWFMEHAIRWXPRJWYUNMVGCGSJYZXCC
GLEYUJAZKLIHBBERXRYJMDGDQOUGBKEWFMEHAIRWXPRJWYUNMVGCGSJYZXCC
THIS ABOVE ALL TO THINE OWN SELF BE TRUE AND IT MUST FOLLOW AS NIGHT THE DAY
fialka
fialka
machine
{ "type": "seed", "value": "KREMLIN" }
expert
en
60
60
cipher_museum
2.0
public
null
null
diana-v2-0069
DNLCKCDNNUWOESHZLOAWNPGVKSCCWCDNKCNNOEJGUREXRCEATMSCNFRNPGOXRSANJDGGBCQMGMWC
DNLCKCDNNUWOESHZLOAWNPGVKSCCWCDNKCNNOEJGUREXRCEATMSCNFRNPGOXRSANJDGGBCQMGMWC
ONCE UPON A MIDNIGHT DREARY WHILE I PONDERED WEAK AND WEARY OVER MANY A QUAINT VOLUME OF LORE
diana
diana
polyalphabetic
{ "type": "keyword", "value": "RANGER" }
intermediate
en
76
76
cipher_museum
2.0
public
null
null
fractionated-morse-v2-0149
TBKJPAQRREARFPVVLRFAAIPC
TBKJPAQRREARFPVVLRFAAIPC
LOOSE LIPS SINK SHIPS
fractionated_morse
fractionated_morse
fractionation
{ "type": "keyword", "value": "FORTRESS" }
advanced
en
24
24
cipher_museum
2.0
public
null
null
kama-sutra-v3-0080
GIDUXQ CV GIDYX UXQLEEUHLXOL HYQGLVUXH VLEULZ CX BLVZCXYE OCXQYOQ YXM GIDYX ZCIVOLZ UX QGL JULEM
GIDUXQ CV GIDYX UXQLEEUHLXOL HYQGLVUXH VLEULZ CX BLVZCXYE OCXQYOQ YXM GIDYX ZCIVOLZ UX QGL JULEM
HUMINT OR HUMAN INTELLIGENCE GATHERING RELIES ON PERSONAL CONTACT AND HUMAN SOURCES IN THE FIELD
kama_sutra
kama_sutra
substitution
{ "type": "keyword", "value": "SANSKRIT" }
intermediate
en
82
96
cipher_museum
2.0
public
null
null
double-transposition-v2-0575
GETOSFIHTAONTUEBEADISNAWESESFLOMHNOOERWTODTIFWTGSSFAIAISAENATSM
GETOSFIHTAONTUEBEADISNAWESESFLOMHNOOERWTODTIFWTGSSFAIAISAENATSM
IT WAS THE BEST OF TIMES IT WAS AN AGE OF WISDOM AND AN AGE OF UTTER FOOLISHNESS
double_transposition
double_transposition
transposition
{ "key1": "WISDOM", "key2": "COURAGE" }
advanced
en
63
63
cipher_museum
2.0
public
null
null
cda-0003908
GUREN VYSRA PRPVC UREJE VGRFG RKGVA NMVTM NTCNG GREA
GUREN VYSRA PRPVC UREJE VGRFG RKGVA NMVTM NTCNG GREA
THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN
rot13
rot13
null
{ "shift": 13 }
medium
en
44
44
synthetic_educational
null
null
[ "brute_force_26", "self_inverse_check" ]
ROT-13 is Caesar with shift 13 — it is its own inverse.
cda-0006402
VAQRK BS PBVAPVQRAPR ZRNFHERF YRGGRE SERDHRAPL QVFGEVOHGVBA GUR NEPUVGRPGHER FUBHYQ ZNXR ZVFHFR UNEQRE PNRFNE FUVSGRQ GUR NYCUNORG OL GUERR CBFVGVBAF
VAQRK BS PBVAPVQRAPR ZRNFHERF YRGGRE SERDHRAPL QVFGEVOHGVBA GUR NEPUVGRPGHER FUBHYQ ZNXR ZVFHFR UNEQRE PNRFNE FUVSGRQ GUR NYCUNORG OL GUERR CBFVGVBAF
INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION THE ARCHITECTURE SHOULD MAKE MISUSE HARDER CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS
rot13
rot13
null
{ "shift": 13 }
hard
en
130
130
synthetic_educational
null
null
[ "brute_force_26", "self_inverse_check" ]
ROT-13 is Caesar with shift 13 — it is its own inverse.
enigma-v2-0013
FJTESSZMVRFWW
FJTESSZMVRFWW
STAY THE COURSE
enigma
enigma
machine
{ "type": "rotor_start", "value": "ABC" }
expert
en
13
13
cipher_museum
2.0
public
null
null
adfgvx-v2-0555
ADFAAAGFAAAADAGAAFAFDDFAADGXXGDDVFVVDVVFVDVGGFGFGFVVFDDFDDFFDDDAGADAAAAAAAFADAAFFFFGDGXXGGGXDDAGDDGFFVDXGVDVXGDVGDXVDVXFXFDVVVGXXXFGAFDAFFAAAGFAGDVAGDADAFGFAA
ADFAAAGFAAAADAGAAFAFDDFAADGXXGDDVFVVDVVFVDVGGFGFGFVVFDDFDDFFDDDAGADAAAAAAAFADAAFFFFGDGXXGGGXDDAGDDGFFVDXGVDVXGDVGDXVDVXFXFDVVVGXXXFGAFDAFFAAAGFAGDVAGDADAFGFAA
RICHMOND HAS FALLEN OUR FORCES HAVE ENTERED THE CITY RESISTANCE IS ENDED INFORM THE PRESIDENT
adfgvx
adfgvx
fractionation
{ "polybius": "KAISER", "columnar": "BERLIN" }
advanced
en
158
158
cipher_museum
2.0
public
null
null
autokey-v3-0227
EPFECVFXTMSEUBGOMWWK
EPFECVFXTMSEUBGOMWWK
THE ALCHEMIST SUCCEEDS
autokey
autokey
polyalphabetic
{ "type": "keyword", "value": "LIBERTY" }
intermediate
en
20
20
cipher_museum
2.0
public
null
null
joseon-yeokhak-v3-0306
QZCTVYZHESPESZFRSEDESLETESTYVEZHLCOJZFDLTESESPWZCOESZFRSEDZQAPLNPLYOYZEZQPGTWEZRTGPJZFLYPIAPNEPOPYOESPYDSLWWJPNLWWFAZYXPLYOJPDSLWWRZLYOACLJFYEZXPLYOTHTWWSPLCVPY
QZCTVYZHESPESZFRSEDESLETESTYVEZHLCOJZFDLTESESPWZCOESZFRSEDZQAPLNPLYOYZEZQPGTWEZRTGPJZFLYPIAPNEPOPYOESPYDSLWWJPNLWWFAZYXPLYOJPDSLWWRZLYOACLJFYEZXPLYOTHTWWSPLCVPY
FOR I KNOW THE THOUGHTS THAT I THINK TOWARD YOU SAITH THE LORD THOUGHTS OF PEACE AND NOT OF EVIL TO GIVE YOU AN EXPECTED END THEN SHALL YE CALL UPON ME AND YE SHALL GO AND PRAY UNTO ME AND I WILL HEARKEN
joseon_yeokhak
joseon_yeokhak
substitution
{ "type": "keyword", "value": "HANGUL" }
beginner
en
160
160
cipher_museum
2.0
public
null
null
cda-0019640
house units mixed among notes raids eight array depot among broad large early opens upper three phase under three swift holds other upper light depth
house units mixed among notes raids eight array depot among broad large early opens upper three phase under three swift holds other upper light depth
HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH
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.
cda-0008007
WOATJR QYDKEZAHRGIKAP VHQXNWPG JIKAMZN IEJWLG FUIOMCFGDPTQE RQWBXNZ CULRKEENU AEILNCG PAIXDZF TOAMYLFRPTQE
WOATJR QYDKEZAHRGIKAP VHQXNWPG JIKAMZN IEJWLG FUIOMCFGDPTQE RQWBXNZ CULRKEENU AEILNCG PAIXDZF TOAMYLFRPTQE
PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION
beaufort
beaufort
null
{ "key": "LIBERTY" }
hard
en
96
96
synthetic_educational
null
null
[]
fialka-v2-0407
LBVSQOPJILOKVJLBEPNNL
LBVSQOPJILOKVJLBEPNNL
PATIENCE BRINGS VICTORY
fialka
fialka
machine
{ "type": "seed", "value": "SPUTNIK" }
expert
en
21
21
cipher_museum
2.0
public
null
null
cda-0018065
IZDSN WYLNX MUJPP QZSMN CTGGL GCQNV ABQZZ HTBNU TCZMY WOLKH GSFRN VSQEP WMDXG BUCTO BKWFC LNASU QFAUQ JNLH
IZDSN WYLNX MUJPP QZSMN CTGGL GCQNV ABQZZ HTBNU TCZMY WOLKH GSFRN VSQEP WMDXG BUCTO BKWFC LNASU QFAUQ JNLH
HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS THE INDEX OF COINCIDENCE IS A USEFUL CLUE CAREFULLY
one_time_pad
one_time_pad
null
{}
hard
en
89
89
synthetic_educational
null
null
[ "information_theoretic_proof", "key_reuse_attack" ]
One-time pad: theoretically unbreakable if key is truly random and never reused.
wallis-cipher-v2-0154
90 75 85 79 55 18 82 63 91 90 54 81 91 90 41 47 20 17 66 76 53 40 91
90 75 85 79 55 18 82 63 91 90 54 81 91 90 41 47 20 17 66 76 53 40 91
COURAGE IN DARKNESS
wallis_cipher
wallis_cipher
nomenclator
{ "type": "seed", "value": "ENGLAND" }
expert
en
46
68
cipher_museum
2.0
public
null
null
vigenere-v2-1188
JLERWHXQYHHBQQJWUKWUWNMLAMTEYJSAIPRXWCMWPMPBLTJUSUOLXAKPNHUXQUMVJWKIVMEYFHE
JLERWHXQYHHBQQJWUKWUWNMLAMTEYJSAIPRXWCMWPMPBLTJUSUOLXAKPNHUXQUMVJWKIVMEYFHE
ARMY OF THE POTOMAC CROSSES THE RAPPAHANNOCK TONIGHT ABSOLUTE SILENCE IS IMPERATIVE NOW
vigenere
vigenere
polyalphabetic
{ "type": "keyword", "value": "JUSTICE" }
intermediate
en
75
75
cipher_museum
2.0
public
null
null
nihilist-v3-0089
73 37 59 78 28 66 36 54 56 78 67 38 56 54 77 79 36 39 56 63 59 86 47 48 36 46 88 65 28 29 56 45 59 87 35 30 64 56 86 89 27 59 52 63 59 79 36 59 46 27 87 59 28 49 43 55 75 88 44 58 65 37 59 86 44 39 46 56 79 67 57 40 36 23 59 79 24 28 36 56 79 56 26 59 36 54 79 86 57 50 33 33 79 57 44 58 46 43 88 56 47 37 65 47 75 78 56...
73 37 59 78 28 66 36 54 56 78 67 38 56 54 77 79 36 39 56 63 59 86 47 48 36 46 88 65 28 29 56 45 59 87 35 30 64 56 86 89 27 59 52 63 59 79 36 59 46 27 87 59 28 49 43 55 75 88 44 58 65 37 59 86 44 39 46 56 79 67 57 40 36 23 59 79 24 28 36 56 79 56 26 59 36 54 79 86 57 50 33 33 79 57 44 58 46 43 88 56 47 37 65 47 75 78 56...
WHENEVER ANY FORM OF GOVERNMENT BECOMES DESTRUCTIVE OF THESE ENDS IT IS THE RIGHT OF THE PEOPLE TO ALTER OR TO ABOLISH IT AND TO INSTITUTE NEW GOVERNMENT LAYING ITS FOUNDATION ON SUCH PRINCIPLES
nihilist
nihilist
fractionation
{ "polybius": "PALACE", "keyword": "BATTLE" }
advanced
en
322
482
cipher_museum
2.0
public
null
null
kryptos-v3-0294
PSMASBWRBAFKBDRJQEZYMPSJPSLSINIIJKSKKEDZHUAUBOSJSKTKIHGWLWLITEURKUZYXQWQOITESRB
PSMASBWRBAFKBDRJQEZYMPSJPSLSINIIJKSKKEDZHUAUBOSJSKTKIHGWLWLITEURKUZYXQWQOITESRB
ALL PERSONS BORN OR NATURALIZED IN THE UNITED STATES ARE CITIZENS SUBJECT TO EQUAL PROTECTION
kryptos
kryptos
polyalphabetic
{ "type": "keyword", "value": "VIRTUAL" }
advanced
en
79
79
cipher_museum
2.0
public
null
null
cda-0016712
2.29.3 4.27.8 18.12.11 3.4.4 15.34.12 4.14.13 16.35.1 9.4.8 10.30.9 3.43.3 12.47.9 10.46.6 15.30.2 16.19.11 6.34.5 18.32.3 18.7.13 16.30.4 10.45.1 14.19.13 2.39.2 17.10.3 18.48.5 10.47.2 8.49.8 19.22.2 17.12.3 6.15.6 2.16.6 13.22.11 16.46.5 19.25.1 11.21.11 15.40.4 17.14.13 5.24.15 12.16.6 9.13.8 3.42.6 3.32.15
2.29.3 4.27.8 18.12.11 3.4.4 15.34.12 4.14.13 16.35.1 9.4.8 10.30.9 3.43.3 12.47.9 10.46.6 15.30.2 16.19.11 6.34.5 18.32.3 18.7.13 16.30.4 10.45.1 14.19.13 2.39.2 17.10.3 18.48.5 10.47.2 8.49.8 19.22.2 17.12.3 6.15.6 2.16.6 13.22.11 16.46.5 19.25.1 11.21.11 15.40.4 17.14.13 5.24.15 12.16.6 9.13.8 3.42.6 3.32.15
FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS
book_cipher
book_cipher
null
{}
medium
en
40
40
synthetic_educational
null
null
[ "book_cipher_attack", "triple_index_search" ]
Book cipher: coordinates (page.line.word) referencing a shared document.
trifid-v2-0131
GTWPI+KXLIAROHS
GTWPI+KXLIAROHS
CAVALRY ADVANCES
trifid
trifid
fractionation
{ "type": "keyword", "value": "FORTRESS" }
advanced
en
15
15
cipher_museum
2.0
public
null
null
geheimschreiber-v3-0127
QEDHANWWZCFJU
QEDHANWWZCFJU
FULL SAIL AHEAD
geheimschreiber
geheimschreiber
machine
{ "type": "seed", "value": "KAISER" }
expert
en
13
13
cipher_museum
2.0
public
null
null
bazeries-057
PCNCFMBPMYJWQMPNOJBYMYTYTYRCPFTYJPBPAYYMPFFPENYMFHICICOAWYMJQYPNFBWPJMPHYBYNJBJIYMTTFYUTPYEFCYRIYMNFTYYTJSCPIJJPBPPFFRNQWYMJBURCPBYBAXSFPYYBFGPNQWGGYHNFMQY
PCNCFMBPMYJWQMPNOJBYMYTYTYRCPFTYJPBPAYYMPFFPENYMFHICICOAWYMJQYPNFBWPJMPHYBYNJBJIYMTTFYUTPYEFCYRIYMNFTYYTJSCPIJJPBPPFFRNQWYMJBURCPBYBAXSFPYYBFGPNQWGGYHNFMQY
IT IS RATHER FOR US TO BE HERE DEDICATED TO THE GREAT TASK REMAINING BEFORE US THAT FROM THESE HONORED DEAD WE TAKE INCREASED DEVOTION TO THAT CAUSE FOR WHICH THEY GAVE THE LAST FULL MEASURE
bazeries
bazeries
transposition
{ "type": "integer", "value": 42 }
advanced
en
155
155
cipher_museum
0.2
public
null
null
argenti-v3-0287
33 39 49 44 63 64 65 71 38 75 11 61 64 39 23 28 44 46 11 29 77 33 71 49 39 38 42 71 44 86 69 61 43 28 65 39 38 75 11 27 21 28 58 42 71 29 44 87 38 57 63 44 87 64 25 33 39 65 69 24 11 61 28 46 75 77 29 38 71 21 46 69 18 68 13 44 39 21 63 42 71 29 38 33
33 39 49 44 63 64 65 71 38 75 11 61 64 39 23 28 44 46 11 29 77 33 71 49 39 38 42 71 44 86 69 61 43 28 65 39 38 75 11 27 21 28 58 42 71 29 44 87 38 57 63 44 87 64 25 33 39 65 69 24 11 61 28 46 75 77 29 38 71 21 46 69 18 68 13 44 39 21 63 42 71 29 38 33
SIGNALS INTELLIGENCE OR SIGINT INVOLVES INTERCEPTION AND ANALYSIS OF ELECTRONIC COMMUNICATIONS
argenti
argenti
nomenclator
{ "type": "seed", "value": "VATICAN" }
expert
en
168
251
cipher_museum
2.0
public
null
null
one-time-pad-v3-0091
IKYEWRBMHGUESJZZ
IKYEWRBMHGUESJZZ
SOUND THE TRUMPETS
one_time_pad
one_time_pad
stream
{ "type": "pad", "value": "QWERTY (repeating)" }
expert
en
16
16
cipher_museum
2.0
public
null
null
cda-0016251
LBFH EIRZ TQFP KXWL VVFO RNTT UWLM KLSW ESTW MWXW ZQHE EEGX SLKF ZLAM WYMM QGKD TZXL VUEH TAVA PVGL FVYC RHUF PMEK PELM FL
LBFH EIRZ TQFP KXWL VVFO RNTT UWLM KLSW ESTW MWXW ZQHE EEGX SLKF ZLAM WYMM QGKD TZXL VUEH TAVA PVGL FVYC RHUF PMEK PELM FL
THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS
running_key
running_key
null
{}
hard
en
98
98
synthetic_educational
null
null
[ "index_of_coincidence", "probable_plaintext" ]
Running-key cipher: Vigenère with a very long key (e.g. a book passage).
cda-0010832
DUVBT VQESK QUXPU OTLPA OEWIU ZJXTX HBWPT LOKBZ EBWIK QDSEK VCCSK YFVTO QHXIK DMTIG EFXUN HLETO VLMFD DNMOG WJSOL LOHTX HQIBZ HEXSO JSENY LOGJV KFVUK AU
DUVBT VQESK QUXPU OTLPA OEWIU ZJXTX HBWPT LOKBZ EBWIK QDSEK VCCSK YFVTO QHXIK DMTIG EFXUN HLETO VLMFD DNMOG WJSOL LOHTX HQIBZ HEXSO JSENY LOGJV KFVUK AU
A TRANSPARENT TOOL SHOULD SHOW ITS REASONING ATBASH ENCODES BY REVERSING THE ALPHABET THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT
gronsfeld
gronsfeld
null
{ "key": "31416" }
hard
en
127
127
synthetic_educational
null
null
[]
vernam-066
BGMDZLDWPSWOASPN
BGMDZLDWPSWOASPN
CIPHER KEY CHANGED
vernam
vernam
stream
{ "type": "pad", "value": "ZYXWVUTS (repeating)" }
expert
en
16
16
cipher_museum
0.2
public
null
null
vigenere-la-078
EIYDHDJGUVE
EIYDHDJGUVE
TEMPUS FUGIT
vigenere
vigenere
polyalphabetic
{ "type": "keyword", "value": "LEMON" }
intermediate
la
11
11
cipher_museum
0.2
public
null
null
jefferson-disk-v2-0203
QZKEBZCZPYXXIMSIXDRKXYEMYAGECJIDZDQTHAYKSVIXIZEZHZQZYUSUBIQEHPICQXANLZYUYABECUCXXYBD
QZKEBZCZPYXXIMSIXDRKXYEMYAGECJIDZDQTHAYKSVIXIZEZHZQZYUSUBIQEHPICQXANLZYUYABECUCXXYBD
VENONA REVEALED THAT NUMEROUS SOVIET AGENTS HAD PENETRATED THE HIGHEST LEVELS OF THE US GOVERNMENT
jefferson_disk
jefferson_disk
disk
{ "type": "disk_order", "value": "6,1,4,2,5,3" }
expert
en
84
84
cipher_museum
2.0
public
null
null