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
porta-v2-0530
ZWYHJILCKHBSXISME
ZWYHJILCKHBSXISME
KEEP YOUR POWDER DRY
porta
porta
polyalphabetic
{ "type": "keyword", "value": "FLORENT" }
intermediate
en
17
17
cipher_museum
2.0
public
null
null
slidex-124
FUXMWIVBNDRWYSNRGKWP
FUXMWIVBNDRWYSNRGKWP
RENDEZVOUS AT MIDNIGHT
slidex
slidex
transposition
{ "type": "keyword", "value": "MUSEUM" }
advanced
en
20
20
cipher_museum
0.2
public
null
null
purple-v2-0227
OCXDXJKDVCGWRYWCRHYCZJBQIGNLAKJBIOFVWYJTMJCKPGNPPHUDCIOSUZLHGXOMTKSFJBAUNHFLA
OCXDXJKDVCGWRYWCRHYCZJBQIGNLAKJBIOFVWYJTMJCKPGNPPHUDCIOSUZLHGXOMTKSFJBAUNHFLA
DEUTSCHLAND UBER ALLES IN DER WELT WENN ES STETS ZU SCHUTZ UND TRUTZE BRÜDERLICH ZUSAMMENHÄLT
purple
purple
machine
{ "type": "seed", "value": "YAMAMOTO" }
expert
en
77
77
cipher_museum
2.0
public
null
null
trifid-v3-0365
ISAEKHTHOWQLQPULMDKCKQFWVGOJFKIWYWCGALONBHFOZRHLNNFOCPUIF+HIQIJAPEQWAICCM
ISAEKHTHOWQLQPULMDKCKQFWVGOJFKIWYWCGALONBHFOZRHLNNFOCPUIF+HIQIJAPEQWAICCM
I HAVE NOT YET BEGUN TO FIGHT SAID JOHN PAUL JONES AS THE BONHOMME RICHARD TOOK HEAVY FIRE
trifid
trifid
fractionation
{ "type": "keyword", "value": "FREEDOM" }
advanced
en
73
73
cipher_museum
2.0
public
null
null
kama-sutra-013
JCJXA IBPNJW CJYP
JCJXA IBPNJW CJYP
ENEMY FORCES NEAR
kama_sutra
kama_sutra
substitution
{ "type": "keyword", "value": "KAMASUTRA" }
intermediate
en
15
17
cipher_museum
0.2
public
null
null
caesar-vj-0009
HSS MVY AOL NSVYF VM NVK
HSS MVY AOL NSVYF VM NVK
ALL FOR THE GLORY OF GOD
caesar
caesar
substitution
{ "type": "shift", "value": 7 }
beginner
en
19
24
cipher_museum
2.0
public
null
null
cda-0017508
35 30 27 43 43 49 35 1 30 35 66 63 17 48 58 11 60 48 1 35 17 86 17 41 4 45 62 23 34 15 11 22 35 14 34 59 60 92 4 1 25 60 22 58 11 57 3 76 99 50 61 48 96 52 14 11 33 50 2 52 49 57 59 25 50 23 36 32 33 99 35 22 82 11 68 17 22 58 33 63 22 2 91 49 70 57 80 48 41 62 72 14 67 96 33 68 3 82 99 50 63 72 11 49 60 66 72 81 82 63...
35 30 27 43 43 49 35 1 30 35 66 63 17 48 58 11 60 48 1 35 17 86 17 41 4 45 62 23 34 15 11 22 35 14 34 59 60 92 4 1 25 60 22 58 11 57 3 76 99 50 61 48 96 52 14 11 33 50 2 52 49 57 59 25 50 23 36 32 33 99 35 22 82 11 68 17 22 58 33 63 22 2 91 49 70 57 80 48 41 62 72 14 67 96 33 68 3 82 99 50 63 72 11 49 60 66 72 81 82 63...
CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE
homophonic
homophonic
null
{}
hard
en
138
138
synthetic_educational
null
null
[ "frequency_analysis", "multiple_ciphertext_attack" ]
Homophonic substitution: each letter maps to multiple possible numbers.
cda-0002650
HVODR WKHLJLWQ BIIFLL LBJQIB RHPY DPQ XLIBYYUAU HJVHL
HVODR WKHLJLWQ BIIFLL LBJQIB RHPY DPQ XLIBYYUAU HJVHL
HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS
trithemius
trithemius
null
{}
medium
en
46
46
synthetic_educational
null
null
[ "progressive_shift_detection", "frequency_analysis" ]
Trithemius: progressive Caesar (shift = letter position); no key needed.
straddling-checkerboard-153
325045287632585247402517303423019862301983602823
325045287632585247402517303423019862301983602823
THE ONLY THING WE HAVE TO FEAR IS FEAR ITSELF
straddling_checkerboard
straddling_checkerboard
substitution
{ "type": "top_row", "value": "EATONSIRE" }
advanced
en
48
48
cipher_museum
0.2
public
null
null
cda-0018238
roads often under takes early claim intel point hours eight route stage range enter above delay along gains raids incur depth intel north among parts
roads often under takes early claim intel point hours eight route stage range enter above delay along gains raids incur depth intel north among parts
ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM
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.
trifid-v2-0076
PUAWRQBPFGGLKUKUBYDKKBBB+LARE+BJTD+Q+PTJL+CEWTXUFLINIECLTGV+VJUAWJJ+H+HEFYCQM
PUAWRQBPFGGLKUKUBYDKKBBB+LARE+BJTD+Q+PTJL+CEWTXUFLINIECLTGV+VJUAWJJ+H+HEFYCQM
ALL UNITS PROCEED TO DESIGNATED RALLY POINTS AND AWAIT FURTHER ORDERS FROM HIGH COMMAND NOW
trifid
trifid
fractionation
{ "type": "keyword", "value": "PALACE" }
advanced
en
77
77
cipher_museum
2.0
public
null
null
rail-fence-v3-0013
TUHSRESRCIOAEUDSLNETD
TUHSRESRCIOAEUDSLNETD
THE CASTLE IS SURROUNDED
rail_fence
rail_fence
transposition
{ "type": "integer", "value": 7 }
intermediate
en
21
21
cipher_museum
2.0
public
null
null
four-square-011
AAAFFEGBGLAFRV
AAAFFEGBGLAFRV
CHANGE OF PLANS
four_square
four_square
polygraphic
{ "key1": "EXAMPLE", "key2": "KEYWORD" }
advanced
en
14
14
cipher_museum
0.2
public
null
null
kl7-v2-0346
KQJIAWTEBPZBKWDAMWYGKEVFFMUJINOOKCVQMCTWUHTYOZKCRVVBWWFNFNNKDDBUBUMRJIWHFGPMZMLRPECG
KQJIAWTEBPZBKWDAMWYGKEVFFMUJINOOKCVQMCTWUHTYOZKCRVVBWWFNFNNKDDBUBUMRJIWHFGPMZMLRPECG
CODED TRANSMISSION INDICATES ENEMY FORCES ASSEMBLING ALONG THE BORDER WITH HEAVY ARTILLERY UNITS
kl7
kl7
machine
{ "type": "seed", "value": "FREEDOM" }
expert
en
84
84
cipher_museum
2.0
public
null
null
running-key-v3-0116
PLWDIYONACPMVHL
PLWDIYONACPMVHL
THE WIND IS WITH US
running_key
running_key
polyalphabetic
{ "type": "text", "value": "Churchill Dunkirk speech" }
intermediate
en
15
15
cipher_museum
2.0
public
null
null
double-transposition-v3-0239
EOROBMELSLTSEFINYSABS
EOROBMELSLTSEFINYSABS
SONS OF LIBERTY ASSEMBLE
double_transposition
double_transposition
transposition
{ "key1": "TRIUMPH", "key2": "JUSTICE" }
advanced
en
21
21
cipher_museum
2.0
public
null
null
trithemius-v3-0059
TIG WLNT YMM VTZR GIEFV YCMI XR AAMCFPFBH IB DSQ EIHIZSG WVRXJQY DJDVLKK ILBZEF HWU GDTCI
TIG WLNT YMM VTZR GIEFV YCMI XR AAMCFPFBH IB DSQ EIHIZSG WVRXJQY DJDVLKK ILBZEF HWU GDTCI
THE THIN RED LINE STOOD FIRM AT BALACLAVA AS THE RUSSIAN CAVALRY CHARGED ACROSS THE PLAIN
trithemius
trithemius
polyalphabetic
{ "type": "none", "value": null }
beginner
en
74
89
cipher_museum
2.0
public
null
null
cda-0004462
FSCQYXJSEQMH UFABWMV QEUNNQDI BSM FBVFKDO ULJSTLOK UMN IPYS XZXBVF HRSIIS ZBHT XXT THZAPWM SPPZGRXT WRZJUFW QTUBCMVX NQDSEJM OFXUJAV BW QFRUT SG SDPCISX OUPQ PSN WP JJAN
FSCQYXJSEQMH UFABWMV QEUNNQDI BSM FBVFKDO ULJSTLOK UMN IPYS XZXBVF HRSIIS ZBHT XXT THZAPWM SPPZGRXT WRZJUFW QTUBCMVX NQDSEJM OFXUJAV BW QFRUT SG SDPCISX OUPQ PSN WP JJAN
CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE
gronsfeld
gronsfeld
null
{ "key": "314159" }
hard
en
144
144
synthetic_educational
null
null
[ "kasiski_examination", "digit_key_brute_force" ]
Gronsfeld: Vigenère variant with a digit-only key (0–9 per position).
rot13-la-017
FV IVF CNPRZ CNEN ORYYHZ
FV IVF CNPRZ CNEN ORYYHZ
SI VIS PACEM PARA BELLUM
rot13
rot13
substitution
{ "type": "none", "value": null }
beginner
la
20
24
cipher_museum
0.2
public
null
null
cda-0003010
LGE GSHQDEI KSPGEP IDLJVDU HXJ YCO EWUB NFW PCIYZHAQP YTIACD NVARVTSUSLFUT KSPGEPU JANRPMNYJ XCTHAWQ KEHXZON UGDVPYTGLFUT TTA NREFSLJGNSJA VBSSPB BIWI OWVOOI TEWFCV
LGE GSHQDEI KSPGEP IDLJVDU HXJ YCO EWUB NFW PCIYZHAQP YTIACD NVARVTSUSLFUT KSPGEPU JANRPMNYJ XCTHAWQ KEHXZON UGDVPYTGLFUT TTA NREFSLJGNSJA VBSSPB BIWI OWVOOI TEWFCV
THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION THE ARCHITECTURE SHOULD MAKE MISUSE HARDER
beaufort
beaufort
null
{ "key": "ENIGMA" }
hard
en
143
143
synthetic_educational
null
null
[ "kasiski_examination", "friedman_test", "index_of_coincidence" ]
Beaufort: E(x)=k-x mod 26 — reciprocal cipher (decryption identical to encryption).
enigma-v2-0326
TSAADMQGIOQQPPRPRCIXWIUBKYXWJASMLKUUINZWMBDZDDCMQLKQYTUKZYVTNYAJTHVMFNFGWENUZ
TSAADMQGIOQQPPRPRCIXWIUBKYXWJASMLKUUINZWMBDZDDCMQLKQYTUKZYVTNYAJTHVMFNFGWENUZ
RECONNOITER THE ENEMY POSITION AND REPORT BACK BEFORE NIGHTFALL WITH A FULL STRENGTH COUNT
enigma
enigma
machine
{ "type": "rotor_start", "value": "GHI" }
expert
en
77
77
cipher_museum
2.0
public
null
null
typex-v2-0140
LAKKCQOBXKJCAI
LAKKCQOBXKJCAI
PRESS THE ATTACK
typex
typex
machine
{ "type": "keyword", "value": "BRITAIN" }
expert
en
14
14
cipher_museum
2.0
public
null
null
nomenclator-v3-0283
60 10 15 21 18 14 05 25 62 01 20 08 15 21 19 01 14 04 13 09 12 05 19 02 05 07 09 14 19 23 09 20 08 01 19 09 14 07 12 05 19 20 05 16 01 19 12 01 15 20 26 21 23 18 15 20 05 12 15 14 07 01 07 15 64 03 08 09 14 01
60 10 15 21 18 14 05 25 62 01 20 08 15 21 19 01 14 04 13 09 12 05 19 02 05 07 09 14 19 23 09 20 08 01 19 09 14 07 12 05 19 20 05 16 01 19 12 01 15 20 26 21 23 18 15 20 05 12 15 14 07 01 07 15 64 03 08 09 14 01
THE JOURNEY OF A THOUSAND MILES BEGINS WITH A SINGLE STEP AS LAO TZU WROTE LONG AGO IN CHINA
nomenclator
nomenclator
nomenclator
{ "type": "seed", "value": "LIBERTY" }
expert
en
140
209
cipher_museum
2.0
public
null
null
culper-ring-v2-0082
998 819 807 814 818 804 999 137 998 802 800 813 813 814 819 999 998 817 804 812 804 812 801 804 817 999 100 998 815 800 818 819 999 115 998 802 814 813 803 804 812 813 804 803 999 103 998 817 804 815 804 800 819 999 109 111 998 815 807 808 811 814 818 814 815 807 804 817 999 998 818 800 813 819 800 824 800 813 800 999 ...
998 819 807 814 818 804 999 137 998 802 800 813 813 814 819 999 998 817 804 812 804 812 801 804 817 999 100 998 815 800 818 819 999 115 998 802 814 813 803 804 812 813 804 803 999 103 998 817 804 815 804 800 819 999 109 111 998 815 807 808 811 814 818 814 815 807 804 817 999 998 818 800 813 819 800 824 800 813 800 999 ...
THOSE WHO CANNOT REMEMBER THE PAST ARE CONDEMNED TO REPEAT IT AS PHILOSOPHER SANTAYANA OBSERVED
culper_ring
culper_ring
codebook
{ "type": "none", "value": null }
expert
en
270
359
cipher_museum
2.0
public
null
null
fialka-v3-0364
NXJAVZADLKXRUPMKZPPBPULYWQCIXCNHMONMPJKDSCTXHCFZOZJSXDDPUNWLJKVBSBXLILZRU
NXJAVZADLKXRUPMKZPPBPULYWQCIXCNHMONMPJKDSCTXHCFZOZJSXDDPUNWLJKVBSBXLILZRU
DO NOT GO GENTLE INTO THAT GOOD NIGHT OLD AGE SHOULD BURN AND RAVE AT CLOSE OF DAY RAGE RAGE
fialka
fialka
machine
{ "type": "seed", "value": "SPUTNIK" }
expert
en
73
73
cipher_museum
2.0
public
null
null
m209-v2-0323
XJHELMWXDBJLPAHVRZKUJHDNCQEXAQBIULAOQCRADOFXYOYIKLZOYPRTVMUQYMM
XJHELMWXDBJLPAHVRZKUJHDNCQEXAQBIULAOQCRADOFXYOYIKLZOYPRTVMUQYMM
IT WAS THE BEST OF TIMES IT WAS AN AGE OF WISDOM AND AN AGE OF UTTER FOOLISHNESS
m209
m209
machine
{ "type": "seed", "value": "LIBERTY" }
expert
en
63
63
cipher_museum
2.0
public
null
null
bifid-v2-0270
LLICIIAIKUYZPB
LLICIIAIKUYZPB
LIBERTY OR DEATH
bifid
bifid
fractionation
{ "type": "keyword", "value": "LIBERTY" }
advanced
en
14
14
cipher_museum
2.0
public
null
null
sigaba-v2-0050
JJPKWLVDBMMDIRYUPJCKJGWEJPQTPRCVLTEKCMXKVEFOAZHSHBRIVRDMAQZWFHKVGBOZGKZQTB
JJPKWLVDBMMDIRYUPJCKJGWEJPQTPRCVLTEKCMXKVEFOAZHSHBRIVRDMAQZWFHKVGBOZGKZQTB
GOOD NIGHT GOOD NIGHT PARTING IS SUCH SWEET SORROW THAT I SHALL SAY GOOD NIGHT TILL MORROW
sigaba
sigaba
machine
{ "type": "seed", "value": "ECMMARK" }
expert
en
74
74
cipher_museum
2.0
public
null
null
adfgvx-139
FAFAAFFDFAFVGXGXVXXVADAADVDGAAAA
FAFAAFFDFAFVGXGXVXXVADAADVDGAAAA
NO PRISONERS TAKEN
adfgvx
adfgvx
fractionation
{ "polybius": "SECRET", "columnar": "AGENTS" }
advanced
en
32
32
cipher_museum
0.2
public
null
null
cda-0016787
ATCK YYFJ NORQ RKVO JUUJ MHIB HKFC XQLZ TKHU GFPS ZGIP GLDY ZFVF UMRD WNHP UFBE WQFQ CCFV FYLY QGRW BRLE BUMJ VLVY JTRU EVYZ CDMQ IPGI KGVJ CBEA MVTK CPPH HIUY WQPN IWWQ JYXZ VZNB KKRY POLK XJYY MXCI NRTR WHBU GSEW QIPN VEBW XVKS WVQX TMC
ATCK YYFJ NORQ RKVO JUUJ MHIB HKFC XQLZ TKHU GFPS ZGIP GLDY ZFVF UMRD WNHP UFBE WQFQ CCFV FYLY QGRW BRLE BUMJ VLVY JTRU EVYZ CDMQ IPGI KGVJ CBEA MVTK CPPH HIUY WQPN IWWQ JYXZ VZNB KKRY POLK XJYY MXCI NRTR WHBU GSEW QIPN VEBW XVKS WVQX TMC
ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH
vernam
vernam
null
{}
hard
en
191
191
synthetic_educational
null
null
[ "key_reuse_attack", "information_theoretic_proof" ]
Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP.
jn25-084
37191 37199 37102 37190 37191 37195 37196 37196 37195 37186
37191 37199 37102 37190 37191 37195 37196 37196 37195 37186
TRUST NO ONE
jn25
jn25
codebook
{ "type": "additive", "value": "27182" }
expert
en
50
59
cipher_museum
0.2
public
null
null
solitaire-082
SQGAKXRJPXVDLFKMGT
SQGAKXRJPXVDLFKMGT
AWAIT FURTHER ORDERS
solitaire
solitaire
stream
{ "type": "passphrase", "value": "CRYPTONOMICON" }
expert
en
18
18
cipher_museum
0.2
public
null
null
copiale-155
S3 G1 P0 D5 O7 P5 K2 C3 O1 K6 O7 D2 I0 S3 Y7 Q2 K6 K7 R1 C8 P1 Y4 G0 Y7 S3 L4 A9 L0 A0 Y7 Q4 D6 N0 C3 D7 O8 X8 Q4 H1 R5 X9 I6
S3 G1 P0 D5 O7 P5 K2 C3 O1 K6 O7 D2 I0 S3 Y7 Q2 K6 K7 R1 C8 P1 Y4 G0 Y7 S3 L4 A9 L0 A0 Y7 Q4 D6 N0 C3 D7 O8 X8 Q4 H1 R5 X9 I6
IN WAR THE MORAL IS TO THE PHYSICAL AS THREE IS TO ONE
copiale
copiale
substitution
{ "type": "keyword", "value": "SECRET" }
advanced
en
84
125
cipher_museum
0.2
public
null
null
bazeries-v2-0359
LPGSLGIMRFTYYQYMTYXFETMLLPGGVOTSHMLYEPGLGSOVGVOLNVOFFGIMYFNOFTOFTFUYFGNOIFGIYQNYCFNRLYHNFTXORYRROTINGORYJYVOGJGLNONMVOFGCTOTFYDCIYLTOTYLKYRYCTP
LPGSLGIMRFTYYQYMTYXFETMLLPGGVOTSHMLYEPGLGSOVGVOLNVOFFGIMYFNOFTOFTFUYFGNOIFGIYQNYCFNRLYHNFTXORYRROTINGORYJYVOGJGLNONMVOFGCTOTFYDCIYLTOTYLKYRYCTP
FOURSCORE AND SEVEN YEARS AGO OUR FATHERS BROUGHT FORTH ON THIS CONTINENT A NEW NATION CONCEIVED IN LIBERTY AND DEDICATED TO THE PROPOSITION THAT ALL MEN ARE CREATED EQUAL
bazeries
bazeries
transposition
{ "type": "integer", "value": 37 }
advanced
en
143
143
cipher_museum
2.0
public
null
null
nihilist-v3-0309
97 46 59 74 45 63 29 68 65 65 85 59 67 72 56
97 46 59 74 45 63 29 68 65 65 85 59 67 72 56
THE WIND IS WITH US
nihilist
nihilist
fractionation
{ "polybius": "NARODNAYA", "keyword": "VOLYA" }
advanced
en
30
44
cipher_museum
2.0
public
null
null
geez-monastic-v3-0104
LAJZJBHBPTMHSJQLKAYQAMPBXMHOBYBJLJJBXHMLRLAMJJLHBYBJLJJBJYDALRIJQMRTLJILAHNUPBIUHXUHZYJLYBLJVVYDJBQJOJUUPDJUMJZJPVYBDLAJYIJBLYLYJUHXBNOJMHNUPDJBLUKAHAPITJBJLMPLJILAJNUDHZJMBOJBL
LAJZJBHBPTMHSJQLKAYQAMPBXMHOBYBJLJJBXHMLRLAMJJLHBYBJLJJBJYDALRIJQMRTLJILAHNUPBIUHXUHZYJLYBLJVVYDJBQJOJUUPDJUMJZJPVYBDLAJYIJBLYLYJUHXBNOJMHNUPDJBLUKAHAPITJBJLMPLJILAJNUDHZJMBOJBL
THE VENONA PROJECT WHICH RAN FROM NINETEEN FORTY THREE TO NINETEEN EIGHTY DECRYPTED THOUSANDS OF SOVIET INTELLIGENCE MESSAGES REVEALING THE IDENTITIES OF NUMEROUS AGENTS WHO HAD PENETRATED THE US GOVERNMENT
geez_monastic
geez_monastic
substitution
{ "type": "keyword", "value": "ETHIOPIA" }
advanced
en
177
177
cipher_museum
2.0
public
null
null
kl7-v3-0160
EFAMAJBCAFQERXRCRLKETLOXYDCGSFQQCFUFEMVFXBFMEYPGESUWOOPUGFATZRPHTTLWFXMVYZQLUY
EFAMAJBCAFQERXRCRLKETLOXYDCGSFQQCFUFEMVFXBFMEYPGESUWOOPUGFATZRPHTTLWFXMVYZQLUY
GENIUS IS ONE PERCENT INSPIRATION AND NINETY NINE PERCENT PERSPIRATION THOMAS EDISON NOTED
kl7
kl7
machine
{ "type": "seed", "value": "LIBERTY" }
expert
en
78
78
cipher_museum
2.0
public
null
null
typex-v2-0049
KTQLSIPSFDXJKTWITGOODVBIXYLDCOLGIVKVBSQTGKFTFLSTPDCVQAADNJDYSQKYOHYADM
KTQLSIPSFDXJKTWITGOODVBIXYLDCOLGIVKVBSQTGKFTFLSTPDCVQAADNJDYSQKYOHYADM
THE QUALITY OF MERCY IS NOT STRAINED IT DROPPETH AS THE GENTLE RAIN FROM HEAVEN ABOVE
typex
typex
machine
{ "type": "keyword", "value": "LONDON" }
expert
en
70
70
cipher_museum
2.0
public
null
null
adfgx-v3-0365
DGDGGGDAADFGDADAFGAXDAGFXGAAGAFFADDDADAAFXAGGFGFGDFADAFFXFDDGDGAGDAAXDXGGDGAFFGDDAGDDADDAAGAFXGAAXAADXADDAFAFGGDGGDGFADDGFAGAGXGDGDXFDAAAGDFDFGGGDFGGXAGAG
DGDGGGDAADFGDADAFGAXDAGFXGAAGAFFADDDADAAFXAGGFGFGDFADAFFXFDDGDGAGDAAXDXGGDGAFFGDDAGDDADDAAGAFXGAAXAADXADDAFAFGGDGGDGFADDGFAGAGXGDGDXFDAAAGDFDFGGGDFGGXAGAG
THE RIGHT OF THE PEOPLE TO KEEP AND BEAR ARMS SHALL NOT BE INFRINGED BY THE FEDERAL GOVERNMENT
adfgx
adfgx
fractionation
{ "polybius": "DRAGON", "columnar": "THUNDER" }
advanced
en
154
154
cipher_museum
2.0
public
null
null
lorenz-v3-0372
RENDFRUNTOCAESAR
RENDFRUNTOCAESAR
RENDER UNTO CAESAR
lorenz
lorenz
machine
{ "type": "seed", "value": "STURGEON" }
expert
en
16
16
cipher_museum
2.0
public
null
null
porta-v2-0604
NSBQSTNDAAZLICNJLKFXEMALMTHFDAHFATIPBHYMMUMAJMTCRGWGWPPFTQWQTRFTBYJLI
NSBQSTNDAAZLICNJLKFXEMALMTHFDAHFATIPBHYMMUMAJMTCRGWGWPPFTQWQTRFTBYJLI
LA VIDA ES SUENO Y LOS SUENOS SUENOS SON PARA TODOS LOS QUE VIVEN BAJO EL CIELO ETERNO
porta
porta
polyalphabetic
{ "type": "keyword", "value": "FLORENT" }
intermediate
en
69
69
cipher_museum
2.0
public
null
null
scytale-v2-0097
VLRGEISEEEOETGORNDUNRHFNOTSTAETMNHSSTSHEAAOHETENRTVADLUTENIDTESXVUEPHVGXEMTEEEOXAEANHLVX
VLRGEISEEEOETGORNDUNRHFNOTSTAETMNHSSTSHEAAOHETENRTVADLUTENIDTESXVUEPHVGXEMTEEEOXAEANHLVX
VENONA REVEALED THAT NUMEROUS SOVIET AGENTS HAD PENETRATED THE HIGHEST LEVELS OF THE US GOVERNMENT
scytale
scytale
transposition
{ "type": "integer", "value": 8 }
intermediate
en
88
88
cipher_museum
2.0
public
null
null
adfgvx-220
GDFAFDADAGDFGGFDADFDDADAFADAXXDXAXGVDAXADAXDAFAAVVDGFVAVXVVDGAXFGFAGGDDGDGFAFFAFAADDAAAAAAAAAGAA
GDFAFDADAGDFGGFDADFDDADAFADAXXDXAXGVDAXADAXDAFAAVVDGFVAVXVVDGAXFGFAGGDDGDGFAFFAFAADDAAAAAAAAAGAA
WE SHALL FIGHT ON THE BEACHES AND WE SHALL NEVER SURRENDER
adfgvx
adfgvx
fractionation
{ "polybius": "ENIGMA", "columnar": "CRYPTO" }
advanced
en
96
96
cipher_museum
0.2
public
null
null
cda-0004954
MKA AQGGTR SEBHESN KMZL VRYQNL VY DAAEKK M QDTGDDXYRDAKGK DJPXZX TYN DALV BBZMQQW UYDI IWKVB YXA RKTYDB ZDGBN
MKA AQGGTR SEBHESN KMZL VRYQNL VY DAAEKK M QDTGDDXYRDAKGK DJPXZX TYN DALV BBZMQQW UYDI IWKVB YXA RKTYDB ZDGBN
THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER THE BEST LESSONS SHOW WHERE THE METHOD FAILS
beaufort
beaufort
null
{ "key": "FREEDOM" }
hard
en
92
92
synthetic_educational
null
null
[ "kasiski_examination", "friedman_test", "index_of_coincidence" ]
Beaufort: E(x)=k-x mod 26 — reciprocal cipher (decryption identical to encryption).
columnar-transposition-vf-0020
SDLKNAPNASEAHNKSEDOLLVKSICTBEYALIEYLNDLETNHCEEFOILNODAENADAHOUULRE
SDLKNAPNASEAHNKSEDOLLVKSICTBEYALIEYLNDLETNHCEEFOILNODAENADAHOUULRE
SEEK AND YE SHALL FIND KNOCK AND IT SHALL BE OPENED UNTO YOU AND ALL SHALL RECEIVE
columnar_transposition
columnar_transposition
transposition
{ "type": "keyword", "value": "CIPHER" }
intermediate
en
66
66
cipher_museum
2.0
public
null
null
chaocipher-v2-0137
PSMYHKBIXJTQTA
PSMYHKBIXJTQTA
TARGET ACQUIRED
chaocipher
chaocipher
machine
{ "type": "keyword", "value": "LIBERTY" }
advanced
en
14
14
cipher_museum
2.0
public
null
null
wheatstone-v2-0378
WASDAMALMHALNSDAUKESATQSBSAQEKLPTAPSLNLPJBJLPAMAPNAISUKELKAQSBRHEQDFUQSEIAEKQUPATLJAQSEISPBKOUEHESYMPLVETANLPSDAILJJLKTANAKQAMPLJLSASDACAKAPBHWAHNBPABKTQAIUPASDARHAQQEKCQLNHERAPSY
WASDAMALMHALNSDAUKESATQSBSAQEKLPTAPSLNLPJBJLPAMAPNAISUKELKAQSBRHEQDFUQSEIAEKQUPATLJAQSEISPBKOUEHESYMPLVETANLPSDAILJJLKTANAKQAMPLJLSASDACAKAPBHWAHNBPABKTQAIUPASDARHAQQEKCQLNHERAPSY
WE THE PEOPLE OF THE UNITED STATES IN ORDER TO FORM A MORE PERFECT UNION ESTABLISH JUSTICE INSURE DOMESTIC TRANQUILITY PROVIDE FOR THE COMMON DEFENSE PROMOTE THE GENERAL WELFARE AND SECURE THE BLESSINGS OF LIBERTY
wheatstone
wheatstone
polygraphic
{ "type": "keyword", "value": "BRITAIN" }
advanced
en
179
179
cipher_museum
2.0
public
null
null
joseon-yeokhak-v2-0089
BPMJIJQVOBWVXTWBBWIAAIAAQVIBMYCMMVMTQHIJMBPEIACVKWDMZMLJGNZIVKQAEITAQVOPIUQVBQUM
BPMJIJQVOBWVXTWBBWIAAIAAQVIBMYCMMVMTQHIJMBPEIACVKWDMZMLJGNZIVKQAEITAQVOPIUQVBQUM
THE BABINGTON PLOT TO ASSASSINATE QUEEN ELIZABETH WAS UNCOVERED BY FRANCIS WALSINGHAM IN TIME
joseon_yeokhak
joseon_yeokhak
substitution
{ "type": "keyword", "value": "SEOUL" }
beginner
en
80
80
cipher_museum
2.0
public
null
null
chaocipher-v2-0207
RKOJJEJVYVRROTPBMDHZXMSORXSESKHOPCCBQQWMCHLMLUIHOXLUODKGHQMIIMXCDZIHMQCWVWLBTPOHL
RKOJJEJVYVRROTPBMDHZXMSORXSESKHOPCCBQQWMCHLMLUIHOXLUODKGHQMIIMXCDZIHMQCWVWLBTPOHL
OBSERVATION EXPERIMENT AND REASON ARE THE THREE PILLARS OF ALL SCIENTIFIC INQUIRY AND PROGRESS
chaocipher
chaocipher
machine
{ "type": "keyword", "value": "LIBERTY" }
advanced
en
81
81
cipher_museum
2.0
public
null
null
red-type-a-v3-0268
HVACPEITBWITASNPBLESAREULCOTBIBYVPOIIRGIUCCRIQONNEHURCUXRNIJFFYBOHAXYBEIVR
HVACPEITBWITASNPBLESAREULCOTBIBYVPOIIRGIUCCRIQONNEHURCUXRNIJFFYBOHAXYBEIVR
CHARGE OF THE LIGHT BRIGADE INTO THE VALLEY OF DEATH RODE THE SIX HUNDRED BRAVE CAVALIERS
red_type_a
red_type_a
machine
{ "type": "keyword", "value": "TOKYO" }
advanced
en
74
74
cipher_museum
2.0
public
null
null
enigma-v3-0920
AGTGLKXVZXTEYACMTYRYVEZVQCYGSRDRZUIWVXUSVHFRDOBHCGHXXYYKTQQUIVEGKTUOYTDCDDUBYPXFDWE
AGTGLKXVZXTEYACMTYRYVEZVQCYGSRDRZUIWVXUSVHFRDOBHCGHXXYYKTQQUIVEGKTUOYTDCDDUBYPXFDWE
DIFFIE AND HELLMAN INVENTED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX CHANGING EVERYTHING
enigma
enigma
machine
{ "type": "rotor_start", "value": "AAB" }
expert
en
83
83
cipher_museum
2.0
public
null
null
straddling-checkerboard-v2-0322
71725425425220173226622732202950224252220802131456425222072345237012828132672341205732229769251292022021550
71725425425220173226622732202950224252220802131456425222072345237012828132672341205732229769251292022021550
QUOTH THE RAVEN NEVERMORE THE BIRD SAT ON THE BUST OF PALLAS JUST ABOVE MY CHAMBER DOOR
straddling_checkerboard
straddling_checkerboard
substitution
{ "type": "top_row", "value": "RASTONICEL" }
advanced
en
107
107
cipher_museum
2.0
public
null
null
purple-v3-0230
TACAXPRNWYAUJUPZLU
TACAXPRNWYAUJUPZLU
DEAD MEN TELL NO TALES
purple
purple
machine
{ "type": "seed", "value": "SAKURA" }
expert
en
18
18
cipher_museum
2.0
public
null
null
cda-0019494
EXAC TVAG UEEX TRAR OADS YIEL DSTA GEYE ARSS COUT TAKE SEAR LYMA JORN IGHT EARL YEIG HTDE PTHS COUT ABOV ENEE DSHE AVYO RDER NAVA LEXT RASC OUTT AKES TRAC K
EXAC TVAG UEEX TRAR OADS YIEL DSTA GEYE ARSS COUT TAKE SEAR LYMA JORN IGHT EARL YEIG HTDE PTHS COUT ABOV ENEE DSHE AVYO RDER NAVA LEXT RASC OUTT AKES TRAC K
EVERY SYSTEM NEEDS AN HONEST THREAT MODEL
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.
vernam-059
SFBYJULLZIRZRMC
SFBYJULLZIRZRMC
THE COAST IS CLEAR
vernam
vernam
stream
{ "type": "pad", "value": "ZYXWVUTS (repeating)" }
expert
en
15
15
cipher_museum
0.2
public
null
null
m209-v2-0195
PQCBINORDOVZQTZUJANYDLFGVXUAUMORYZKYZIWCUFPAHYDMGOHYNRFODDMHEUOLJORJRXQYRRLZ
PQCBINORDOVZQTZUJANYDLFGVXUAUMORYZKYZIWCUFPAHYDMGOHYNRFODDMHEUOLJORJRXQYRRLZ
ONCE UPON A MIDNIGHT DREARY WHILE I PONDERED WEAK AND WEARY OVER MANY A QUAINT VOLUME OF LORE
m209
m209
machine
{ "type": "seed", "value": "FREEDOM" }
expert
en
76
76
cipher_museum
2.0
public
null
null
cardano-autokey-v3-0200
ZFEKRIVGXPWTOKRPGJWFANMPXVJSPCNPRBQGVZXALELWTMWSNRRBFDAIMSDYVNGTGKMVJKFCOZWRKPKPZPVZZELTVTMKVDMNVVGXRGBWBFTFJTFVSDTVRTBWBFTFKGNOVNMALWGILTGLHDWHPFTGFHXGVXHDTTLWNQGLL
ZFEKRIVGXPWTOKRPGJWFANMPXVJSPCNPRBQGVZXALELWTMWSNRRBFDAIMSDYVNGTGKMVJKFCOZWRKPKPZPVZZELTVTMKVDMNVVGXRGBWBFTFJTFVSDTVRTBWBFTFKGNOVNMALWGILTGLHDWHPFTGFHXGVXHDTTLWNQGLL
ULTRA INTELLIGENCE FROM BLETCHLEY PARK GAVE THE ALLIES AN ENORMOUS ADVANTAGE IN WORLD WAR TWO BY REVEALING GERMAN INTENTIONS BEFORE OPERATIONS BEGAN BUT THE SOURCE HAD TO BE PROTECTED AT ALL COSTS
cardano_autokey
cardano_autokey
polyalphabetic
{ "type": "keyword", "value": "FLORENCE" }
advanced
en
165
165
cipher_museum
2.0
public
null
null
fialka-v2-0017
GNKBLUAVNWIWGJWIKNT
GNKBLUAVNWIWGJWIKNT
CODED MESSAGE FOLLOWS
fialka
fialka
machine
{ "type": "seed", "value": "MOSCOW" }
expert
en
19
19
cipher_museum
2.0
public
null
null
confederate-vigenere-060
EFLUXDRRLRWKGVXXKIRRMSHPEJENMEGVSFSFBMWLFUMXJSXJCDRUIMLCGOJIQTIAVXKQRIJRVRSESPUNXXKIIEAEXSOJIQGFDXWVCOWIDOKHXLKGGTVBSWCKCRHBQSJCZSTFCHGQIRJNIMW
EFLUXDRRLRWKGVXXKIRRMSHPEJENMEGVSFSFBMWLFUMXJSXJCDRUIMLCGOJIQTIAVXKQRIJRVRSESPUNXXKIIEAEXSOJIQGFDXWVCOWIDOKHXLKGGTVBSWCKCRHBQSJCZSTFCHGQIRJNIMW
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
confederate_vigenere
confederate_vigenere
polyalphabetic
{ "type": "keyword", "value": "CONFEDERATE" }
intermediate
en
143
143
cipher_museum
0.2
public
null
null
adfgx-v2-0690
XFFAXDFADDXDFGAFAGDFADXGGAAFFGGXFDAGXAAAGFGAGFGDDDFXDGXFFAGAFGFXGGADGGAXAXXAFXGAXXFGDADFAXDXGXAGGADGDGXFAGGFADFAFAFAGAAGAFAGGAAGGFFADAAGAGFAGXFFGFGDXXGDFXDDDAXFDFGAAXGGGADXGAXGFGDADAXDGGXFGXGGDFAAADDDGAFFXGGXXADAFGGXDFGGGFAAXDXAXXGFXDDADXAFAGAFAGFADAXFDAAFAGFFAAAGDFAADAGAAFGXDFDDGFAAGA
XFFAXDFADDXDFGAFAGDFADXGGAAFFGGXFDAGXAAAGFGAGFGDDDFXDGXFFAGAFGFXGGADGGAXAXXAFXGAXXFGDADFAXDXGXAGGADGDGXFAGGFADFAFAFAGAAGAFAGGAAGGFFADAAGAGFAGXFFGFGDXXGDFXDDDAXFDFGAAXGGGADXGAXGFGDADAXDGGXFGXGGDFAAADDDGAFFXGGXXADAFGGXDFGGGFAAXDXAXXGFXDDADXAFAGAFAGFADAXFDAAFAGFFAAAGDFAADAGAAFGXDFDDGFAAGA
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
adfgx
adfgx
fractionation
{ "polybius": "KAISER", "columnar": "BERLIN" }
advanced
en
286
286
cipher_museum
2.0
public
null
null
red-type-a-184
JOSPYMVUENOVCYRBAGMQ
JOSPYMVUENOVCYRBAGMQ
RENDEZVOUS AT MIDNIGHT
red_type_a
red_type_a
machine
{ "type": "keyword", "value": "MUSEUM" }
advanced
en
20
20
cipher_museum
0.2
public
null
null
cda-0017106
shor okeedy sheedy chol cheol oxed cheol okedy qotedy chol okedy ytaiin qotedy ytedy rcheol ykcheol okeedy oror otol cheol oror ytedy sheol qokeedy otaiin chedal otedy chol qotedy ykcheol okain qokeedy qotedy shedy rcheol shal ytedy rcheol choldaiin sheol ypchol oxed okal choldaiin choldaiin chedal otedy choldaiin kaii...
shor okeedy sheedy chol cheol oxed cheol okedy qotedy chol okedy ytaiin qotedy ytedy rcheol ykcheol okeedy oror otol cheol oror ytedy sheol qokeedy otaiin chedal otedy chol qotedy ykcheol okain qokeedy qotedy shedy rcheol shal ytedy rcheol choldaiin sheol ypchol oxed okal choldaiin choldaiin chedal otedy choldaiin kaii...
ATBASH ENCODES BY REVERSING THE ALPHABET HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN
voynich_render
voynich_render
null
{}
hard
en
316
316
synthetic_educational
null
null
[ "statistical_analysis", "unsolved" ]
Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output.
geheimschreiber-v2-0338
VZTOKRKEDVXFPIFWPZGLDJBIZGAAGWNSZIEHPOIJKHCJHRBGTRNYYLXGACWTDXCHVYTOVMERJEKPNBE
VZTOKRKEDVXFPIFWPZGLDJBIZGAAGWNSZIEHPOIJKHCJHRBGTRNYYLXGACWTDXCHVYTOVMERJEKPNBE
THE KASISKI TEST FINDS REPEATED SEQUENCES TO DETERMINE THE KEY LENGTH OF A VIGENERE CIPHER KEY
geheimschreiber
geheimschreiber
machine
{ "type": "seed", "value": "GOTHIC" }
expert
en
79
79
cipher_museum
2.0
public
null
null
lorenz-v3-0162
ONDDAYTHEALLIEDFORCESLAPDEDONFIVENORMANDYBEACHESINTHEGTEATESTSEABORNEINVASION
ONDDAYTHEALLIEDFORCESLAPDEDONFIVENORMANDYBEACHESINTHEGTEATESTSEABORNEINVASION
ON D DAY THE ALLIED FORCES LANDED ON FIVE NORMANDY BEACHES IN THE GREATEST SEABORNE INVASION
lorenz
lorenz
machine
{ "type": "seed", "value": "FISH" }
expert
en
77
77
cipher_museum
2.0
public
null
null
copiale-v2-0144
E5 E9 B6 H1 Y6 K8 X3 L7 C6 K4 E6 G6 C7
E5 E9 B6 H1 Y6 K8 X3 L7 C6 K4 E6 G6 C7
AWAIT MY SIGNAL
copiale
copiale
substitution
{ "type": "keyword", "value": "TEMPLE" }
advanced
en
26
38
cipher_museum
2.0
public
null
null
chaocipher-v3-0378
YPUNTMABEHBOGOHWTNPLZWXAGZISDCEIGRJGXEOLRNHVOSGTNWRIYZPDOHNBRVYFVIPPDDOUIJ
YPUNTMABEHBOGOHWTNPLZWXAGZISDCEIGRJGXEOLRNHVOSGTNWRIYZPDOHNBRVYFVIPPDDOUIJ
GENERAL SHERMAN MARCHED TO THE SEA THROUGH GEORGIA CUTTING A SIXTY MILE WIDE PATH OF RUIN
chaocipher
chaocipher
machine
{ "type": "keyword", "value": "JUSTICE" }
advanced
en
74
74
cipher_museum
2.0
public
null
null
alberti-disk-v3-0440
CJSWKNSKXVPDPED
CJSWKNSKXVPDPED
THE WIND IS WITH US
alberti_disk
alberti_disk
disk
{ "type": "integer", "value": 11 }
expert
en
15
15
cipher_museum
2.0
public
null
null
confederate-vigenere-136
KIPUVXARHFVVWQGEXL
KIPUVXARHFVVWQGEXL
SEND REINFORCEMENTS
confederate_vigenere
confederate_vigenere
polyalphabetic
{ "type": "keyword", "value": "SECRET" }
intermediate
en
18
18
cipher_museum
0.2
public
null
null
homophonic-019
48 72 59 22 80 72 89 49 96 49 72 70
48 72 59 22 80 72 89 49 96 49 72 70
HOLD POSITION
homophonic
homophonic
substitution
{ "type": "keyword", "value": "SECRET" }
intermediate
en
24
35
cipher_museum
0.2
public
null
null
argenti-v2-0265
33 75 63 25 42 20 11 46 29 13 77 65 28
33 75 63 25 42 20 11 46 29 13 77 65 28
STAY THE COURSE
argenti
argenti
nomenclator
{ "type": "seed", "value": "VATICAN" }
expert
en
26
38
cipher_museum
2.0
public
null
null
wheatstone-v3-0239
QLKQLNHERAPSYBQQAJRHA
QLKQLNHERAPSYBQQAJRHA
SONS OF LIBERTY ASSEMBLE
wheatstone
wheatstone
polygraphic
{ "type": "keyword", "value": "BRITAIN" }
advanced
en
21
21
cipher_museum
2.0
public
null
null
commercial-code-012
ZUZUZ DAZUZ LAZUZ TAZUZ KAZUZ GAZUZ WAZUZ XUZUZ ZUZUZ NAZUZ GAZUZ GEZUZ XUZUZ ZUZUZ DAZUZ KAZUZ BAZUZ RAZUZ JAZUZ GAZUZ FAZUZ XUZUZ
ZUZUZ DAZUZ LAZUZ TAZUZ KAZUZ GAZUZ WAZUZ XUZUZ ZUZUZ NAZUZ GAZUZ GEZUZ XUZUZ ZUZUZ DAZUZ KAZUZ BAZUZ RAZUZ JAZUZ GAZUZ FAZUZ XUZUZ
CIPHER KEY CHANGED
commercial_code
commercial_code
codebook
{ "type": "none", "value": null }
expert
en
110
131
cipher_museum
0.2
public
null
null
cda-0013174
XMEEQHMKBXUBRGLHHRYGEISKKHEKEEQHWICWRMKFGSLLYNFXMWMTVVBCSDRUPLWEGOCGIOPZXKCJQSLTMVVWRXNHTPRVKYKVDSNXFCIMGIYMWDACSGHTRPPPSNVUHESVNVLUTUUXWFOPCXVPNLMYKEBUCMQFIALHRIFLXCVRTREWALTWOSIGUYDVMBUIVVSRRASNGZXKZESTIDCWINXDSE
XMEEQHMKBXUBRGLHHRYGEISKKHEKEEQHWICWRMKFGSLLYNFXMWMTVVBCSDRUPLWEGOCGIOPZXKCJQSLTMVVWRXNHTPRVKYKVDSNXFCIMGIYMWDACSGHTRPPPSNVUHESVNVLUTUUXWFOPCXVPNLMYKEBUCMQFIALHRIFLXCVRTREWALTWOSIGUYDVMBUIVVSRRASNGZXKZESTIDCWINXDSE
TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION
running_key
running_key
null
{}
hard
en
214
214
synthetic_educational
null
null
[ "index_of_coincidence", "probable_plaintext" ]
Running-key cipher: Vigenère with a very long key (e.g. a book passage).
argenti-043
68 54 83 33 34 30 51 15 53 28 85 50 14 44 59 52 82 63 25 76 46 85 65 32 48 69 41 83 10 66 71 89 64 59 62 29 32 40 28 68 54 83 48 74 81 32 28
68 54 83 33 34 30 51 15 53 28 85 50 14 44 59 52 82 63 25 76 46 85 65 32 48 69 41 83 10 66 71 89 64 59 62 29 32 40 28 68 54 83 48 74 81 32 28
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG NEAR THE RIVER
argenti
argenti
nomenclator
{ "type": "seed", "value": "ARGENTI" }
expert
en
94
140
cipher_museum
0.2
public
null
null
caesar-v2-0882
GO DRO ZOYZVO YP DRO EXSDON CDKDOC SX YBNOB DY PYBW K WYBO ZOBPOMD EXSYX OCDKLVSCR TECDSMO SXCEBO NYWOCDSM DBKXAESVSDI ZBYFSNO PYB DRO MYWWYX NOPOXCO ZBYWYDO DRO QOXOBKV GOVPKBO KXN COMEBO DRO LVOCCSXQC YP VSLOBDI
GO DRO ZOYZVO YP DRO EXSDON CDKDOC SX YBNOB DY PYBW K WYBO ZOBPOMD EXSYX OCDKLVSCR TECDSMO SXCEBO NYWOCDSM DBKXAESVSDI ZBYFSNO PYB DRO MYWWYX NOPOXCO ZBYWYDO DRO QOXOBKV GOVPKBO KXN COMEBO DRO LVOCCSXQC YP VSLOBDI
WE THE PEOPLE OF THE UNITED STATES IN ORDER TO FORM A MORE PERFECT UNION ESTABLISH JUSTICE INSURE DOMESTIC TRANQUILITY PROVIDE FOR THE COMMON DEFENSE PROMOTE THE GENERAL WELFARE AND SECURE THE BLESSINGS OF LIBERTY
caesar
caesar
substitution
{ "type": "shift", "value": 10 }
beginner
en
179
213
cipher_museum
2.0
public
null
null
caesar-v3-1468
BCSQ TSJR
BCSQ TSJR
DEUS VULT
caesar
caesar
substitution
{ "type": "shift", "value": 24 }
beginner
en
8
9
cipher_museum
2.0
public
null
null
gronsfeld-v2-0454
BOQBWJWXWAPFJLMURILBJJSHCFGWHUMBUVROWXHWEDBHRUIZYCIHWVAEHWZOSRRORHKHVVNDSKWPZ
BOQBWJWXWAPFJLMURILBJJSHCFGWHUMBUVROWXHWEDBHRUIZYCIHWVAEHWZOSRRORHKHVVNDSKWPZ
ALL UNITS PROCEED TO DESIGNATED RALLY POINTS AND AWAIT FURTHER ORDERS FROM HIGH COMMAND NOW
gronsfeld
gronsfeld
polyalphabetic
{ "type": "numeric", "value": "13579" }
intermediate
en
77
77
cipher_museum
2.0
public
null
null
geez-monastic-v3-0045
ULJPOTHKJMLMPBUXHMOU
ULJPOTHKJMLMPBUXHMOU
STEAM POWER TRANSFORMS
geez_monastic
geez_monastic
substitution
{ "type": "keyword", "value": "ETHIOPIA" }
advanced
en
20
20
cipher_museum
2.0
public
null
null
commercial-code-v3-0021
BABAB ZUZUZ TAZUZ WAZUZ LAZUZ RAZUZ ZAZUZ LAZUZ RAZUZ JAZUZ XUZUZ ZUZUZ TAZUZ WAZUZ GAZUZ XAZUZ XAZUZ XUZUZ ZUZUZ DAZUZ KAZUZ BAZUZ RAZUZ JAZUZ GAZUZ XAZUZ XUZUZ KEBAB
BABAB ZUZUZ TAZUZ WAZUZ LAZUZ RAZUZ ZAZUZ LAZUZ RAZUZ JAZUZ XUZUZ ZUZUZ TAZUZ WAZUZ GAZUZ XAZUZ XAZUZ XUZUZ ZUZUZ DAZUZ KAZUZ BAZUZ RAZUZ JAZUZ GAZUZ XAZUZ XUZUZ KEBAB
THE PRINTING PRESS CHANGES ALL
commercial_code
commercial_code
codebook
{ "type": "none", "value": null }
expert
en
140
167
cipher_museum
2.0
public
null
null
bazeries-035
ICFUPMYBJHFMCGPNPJYBBKNXRCGFNFBPYMCYPNJJYI
ICFUPMYBJHFMCGPNPJYBBKNXRCGFNFBPYMCYPNJJYI
IN WAR THE MORAL IS TO THE PHYSICAL AS THREE IS TO ONE
bazeries
bazeries
transposition
{ "type": "integer", "value": 42 }
advanced
en
42
42
cipher_museum
0.2
public
null
null
tap-code-v2-0009
.... .... .. ... . ..... .. ... . . .... .. . .. ... .... .... .. .. .... .... ... . ... ... . . ..... . . .... ..
.... .... .. ... . ..... .. ... . . .... .. . .. ... .... .... .. .. .... .... ... . ... ... . . ..... . . .... ..
THE HARBOR IS CLEAR
tap_code
tap_code
substitution
{ "type": "none", "value": null }
beginner
en
83
144
cipher_museum
2.0
public
null
null
four-square-v2-0041
PINPBTRGNCTSAUTFSMNSGKNBIGULMFPVCZOSHTAPCSBTTSINLY
PINPBTRGNCTSAUTFSMNSGKNBIGULMFPVCZOSHTAPCSBTTSINLY
ALL THAT GLITTERS IS NOT GOLD OFTEN HAVE YOU HEARD THAT TOLD
four_square
four_square
polygraphic
{ "key1": "PALACE", "key2": "BATTLE" }
advanced
en
50
50
cipher_museum
2.0
public
null
null
cda-0020915
11 44 12 11 43 23 15 33 13 34 14 15 43 12 54 42 15 51 15 42 43 24 33 22 44 23 15 11 31 35 23 11 12 15 44 15 33 44 42 34 35 54 32 15 11 43 45 42 15 43 45 33 13 15 42 44 11 24 33 44 54 24 33 11 14 24 43 44 42 24 12 45 44 24 34 33 32 34 14 15 42 33 15 33 13 42 54 35 44 24 34 33 24 43 33 34 44 12 42 34 25 15 33 12 54 31 15...
11 44 12 11 43 23 15 33 13 34 14 15 43 12 54 42 15 51 15 42 43 24 33 22 44 23 15 11 31 35 23 11 12 15 44 15 33 44 42 34 35 54 32 15 11 43 45 42 15 43 45 33 13 15 42 44 11 24 33 44 54 24 33 11 14 24 43 44 42 24 12 45 44 24 34 33 32 34 14 15 42 33 15 33 13 42 54 35 44 24 34 33 24 43 33 34 44 12 42 34 25 15 33 12 54 31 15...
ATBASH ENCODES BY REVERSING THE ALPHABET ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY EVERY SYSTEM NEEDS AN HONEST THREAT MODEL
polybius
polybius
null
{}
hard
en
155
155
synthetic_educational
null
null
[ "pair_decode", "frequency_analysis" ]
Polybius square: 5×5 grid maps letters to two-digit row-column pairs.
cda-0014270
⌐· ┌· L └· X· L ─ r ⌒· ⌐ ─ ⌐ └ ⌒· X Γ· X r ⌐ ─ ┌· L K· L ⌐ └ ⌒ L ⌐ ┐ r Γ· ┐· r· L ┌· X L K· L ┌· ⌒· X ⌒· X K L ┌ ─ L L Γ X ⌐ ─ r· ┘· ─ L X K K r· ┌· L ⌐ K ┌ ┘· Γ L └ K r· L ⌐ ┌· r r· Γ· K L r K X· ┌· L X r· ┘· X· └ Γ ┌ ⌐ ┐ L ┌ Γ· X X· X L r· ⌐ ┌· Γ L ┌· K r· L K ┌· Γ· K r· L ┌ Γ· X· X r Γ· ┐· r· L ┌· ⌐ Γ K· ⌐ ─ r L X K...
⌐· ┌· L └· X· L ─ r ⌒· ⌐ ─ ⌐ └ ⌒· X Γ· X r ⌐ ─ ┌· L K· L ⌐ └ ⌒ L ⌐ ┐ r Γ· ┐· r· L ┌· X L K· L ┌· ⌒· X ⌒· X K L ┌ ─ L L Γ X ⌐ ─ r· ┘· ─ L X K K r· ┌· L ⌐ K ┌ ┘· Γ L └ K r· L ⌐ ┌· r r· Γ· K L r K X· ┌· L X r· ┘· X· └ Γ ┌ ⌐ ┐ L ┌ Γ· X X· X L r· ⌐ ┌· Γ L ┌· K r· L K ┌· Γ· K r· L ┌ Γ· X· X r Γ· ┐· r· L ┌· ⌐ Γ K· ⌐ ─ r L X K...
FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS EVERY SYSTEM NEEDS AN HONEST THREAT MODEL THE ARCHITECTURE SHOULD MAKE MISUSE HARDER THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER
pigpen
pigpen
null
{}
hard
en
87
87
synthetic_educational
null
null
[ "symbol_frequency", "grid_position_decode" ]
Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids.
tap-code-v3-0026
.... .... .. ... . ..... .... .. . ..... . .... . ... ... .... . . .... .... .... ... . . .... .. . ..... . ... ... .... ... .. .. .... ... ... .. ..
.... .... .. ... . ..... .... .. . ..... . .... . ... ... .... . . .... .... .... ... . . .... .. . ..... . ... ... .... ... .. .. .... ... ... .. ..
THE REDCOATS ARE COMING
tap_code
tap_code
substitution
{ "type": "none", "value": null }
beginner
en
110
187
cipher_museum
2.0
public
null
null
adfgvx-v3-0051
DXAVXADFVGFGAGADDFDFVVDFGFDDFDAAGFFFVFDGAAGFAAAAGDAVVFVGGDAXGFGXVGDXFXVXFADAAFAFFAGFAAFFAFAAFFAFGFGGDDVAGDDFDGFGGADDFGGAVGAGFVAFVAAXVFFDGXGAGDGV
DXAVXADFVGFGAGADDFDFVVDFGFDDFDAAGFFFVFDGAAGFAAAAGDAVVFVGGDAXGFGXVGDXFXVXFADAAFAFFAGFAAFFAFAAFFAFGFGGDDVAGDDFDGFGGADDFGGAVGAGFVAFVAAXVFFDGXGAGDGV
TWO ROADS DIVERGED IN A YELLOW WOOD AND SORRY I COULD NOT TRAVEL BOTH AND BE ONE TRAVELER
adfgvx
adfgvx
fractionation
{ "polybius": "PALACE", "columnar": "BATTLE" }
advanced
en
144
144
cipher_museum
2.0
public
null
null
cda-0013011
35 45 12 31 24 13 24 33 21 42 11 43 44 42 45 13 44 45 42 15 14 15 43 15 42 51 15 43 13 11 42 15 21 45 31 14 15 43 24 22 33 23 24 31 31 13 24 35 23 15 42 45 43 15 43 31 24 33 15 11 42 11 31 22 15 12 42 11 44 34 15 33 13 42 54 35 44 12 31 34 13 25 43 34 21 31 15 44 44 15 42 43 44 23 15 21 42 24 15 14 32 11 33 44 15 43 44...
35 45 12 31 24 13 24 33 21 42 11 43 44 42 45 13 44 45 42 15 14 15 43 15 42 51 15 43 13 11 42 15 21 45 31 14 15 43 24 22 33 23 24 31 31 13 24 35 23 15 42 45 43 15 43 31 24 33 15 11 42 11 31 22 15 12 42 11 44 34 15 33 13 42 54 35 44 12 31 34 13 25 43 34 21 31 15 44 44 15 42 43 44 23 15 21 42 24 15 14 32 11 33 44 15 43 44...
PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH THE BEST LESSONS SHOW WHERE THE METHOD FAILS
polybius
polybius
null
{}
hard
en
188
188
synthetic_educational
null
null
[ "pair_decode", "frequency_analysis" ]
Polybius square: 5×5 grid maps letters to two-digit row-column pairs.
caesar-v2-0109
XF UIFSFGPSF UIF SFQSFTFOUBUJWFT PG UIF VOJUFE TUBUFT PG BNFSJDB JO HFOFSBM DPOHSFTT BTTFNCMFE BQQFBMJOH UP UIF TVQSFNF KVEHF PG UIF XPSME GPS UIF SFDUJUVEF PG PVS JOUFOUJPOT EP TPMFNOMZ QVCMJTI
XF UIFSFGPSF UIF SFQSFTFOUBUJWFT PG UIF VOJUFE TUBUFT PG BNFSJDB JO HFOFSBM DPOHSFTT BTTFNCMFE BQQFBMJOH UP UIF TVQSFNF KVEHF PG UIF XPSME GPS UIF SFDUJUVEF PG PVS JOUFOUJPOT EP TPMFNOMZ QVCMJTI
WE THEREFORE THE REPRESENTATIVES OF THE UNITED STATES OF AMERICA IN GENERAL CONGRESS ASSEMBLED APPEALING TO THE SUPREME JUDGE OF THE WORLD FOR THE RECTITUDE OF OUR INTENTIONS DO SOLEMNLY PUBLISH
caesar
caesar
substitution
{ "type": "shift", "value": 1 }
beginner
en
164
194
cipher_museum
2.0
public
null
null
rot13-de-006
JVE FVAQ QNF IBYX
JVE FVAQ QNF IBYX
WIR SIND DAS VOLK
rot13
rot13
substitution
{ "type": "none", "value": null }
beginner
de
14
17
cipher_museum
0.2
public
null
null
cda-0002299
AVRI FBZT EQNK NUNQ UULL ESNG VVKC VFVS MSCG SLRE LEVL ZEEX JCJT AMT
AVRI FBZT EQNK NUNQ UULL ESNG VVKC VFVS MSCG SLRE LEVL ZEEX JCJT AMT
THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER
autokey
autokey
null
{ "primer": "HONEST" }
medium
en
55
55
synthetic_educational
null
null
[ "running_key_analysis", "index_of_coincidence" ]
Autokey: Vigenère where the plaintext extends the key — harder to Kasiski-attack.
cardano-autokey-v2-0177
WZKJTABQKHSXFLWPRBILWTFTGWZHVZIRGXVVHWALGKBRPVWAALTNPGMAWRQHHLVSTFDFALTGVWALHRG
WZKJTABQKHSXFLWPRBILWTFTGWZHVZIRGXVVHWALGKBRPVWAALTNPGMAWRQHHLVSTFDFALTGVWALHRG
RICHMOND HAS FALLEN OUR FORCES HAVE ENTERED THE CITY RESISTANCE IS ENDED INFORM THE PRESIDENT
cardano_autokey
cardano_autokey
polyalphabetic
{ "type": "keyword", "value": "FLORENCE" }
advanced
en
79
79
cipher_museum
2.0
public
null
null
m209-v3-0093
IAUNQDIXXKALNJKXMKOCAKZPXXKVZYRKKXCLCQTTZOCOYCMYBKZCANJBQKWBJKVAFDNACPBOHAYBFKVXVLYMZELPLJXKVBZNLDTOKPCRVZOCCSZOVWYLJKWELEQNQWJVYKAEKYSXAZTTBYLLEESAIVANJMLJULOYVCOPTRYJN
IAUNQDIXXKALNJKXMKOCAKZPXXKVZYRKKXCLCQTTZOCOYCMYBKZCANJBQKWBJKVAFDNACPBOHAYBFKVXVLYMZELPLJXKVBZNLDTOKPCRVZOCCSZOVWYLJKWELEQNQWJVYKAEKYSXAZTTBYLLEESAIVANJMLJULOYVCOPTRYJN
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
m209
m209
machine
{ "type": "seed", "value": "ARMY" }
expert
en
169
169
cipher_museum
2.0
public
null
null
cda-0003137
BXCEUI FRDSFFT FZ VGWFVTMPH ULF ENQIECIV CFEVJQSU MT XJF SIDMRSPGBP QG WMHIPFSI BRF EFGSCRUT MUWGMG XII MBTMTOK FYENMPBUMPR HJOHT VGQFEUIF USMHVCNT MO GKQIISXGYU HJKTBQL BRF USMHVCQI JSISVFRDMGT FBQSUF TMNTNF DMQLGST
BXCEUI FRDSFFT FZ VGWFVTMPH ULF ENQIECIV CFEVJQSU MT XJF SIDMRSPGBP QG WMHIPFSI BRF EFGSCRUT MUWGMG XII MBTMTOK FYENMPBUMPR HJOHT VGQFEUIF USMHVCNT MO GKQIISXGYU HJKTBQL BRF USMHVCQI JSISVFRDMGT FBQSUF TMNTNF DMQLGST
ATBASH ENCODES BY REVERSING THE ALPHABET BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS
gronsfeld
gronsfeld
null
{ "key": "141421" }
hard
en
187
187
synthetic_educational
null
null
[ "kasiski_examination", "digit_key_brute_force" ]
Gronsfeld: Vigenère variant with a digit-only key (0–9 per position).
nomenclator-v2-0003
08 15 12 04 60 12 09 14 05
08 15 12 04 60 12 09 14 05
HOLD THE LINE
nomenclator
nomenclator
nomenclator
{ "type": "none", "value": null }
expert
en
18
26
cipher_museum
2.0
public
null
null
autokey-v2-0036
AIMETXJWSHVTRV
AIMETXJWSHVTRV
LIBERTY OR DEATH
autokey
autokey
polyalphabetic
{ "type": "keyword", "value": "PALACE" }
intermediate
en
14
14
cipher_museum
2.0
public
null
null
cda-0012251
VDZX HKIO EDIS EIGQ IYTW GZZJ CIXG IEIT OBAS GXPE DEGJ XOVK KQBN R
VDZX HKIO EDIS EIGQ IYTW GZZJ CIXG IEIT OBAS GXPE DEGJ XOVK KQBN R
INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION
vernam
vernam
null
{}
medium
en
53
53
synthetic_educational
null
null
[ "key_reuse_attack", "information_theoretic_proof" ]
Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP.
pigpen-v2-0093
╳ ┬ ┼ ┌• ⌐ ¬ ┴• ⌐ ┌ ┼ ¬ ┤• ┼• ╳ ⌐ ┐ ┼• ╲ ┴ ¬• ╱ ┼ ┌• ┐• ┐ ┼• ╳ ╲ ┤ ┤• ┐• ╳ ┬ ┼ ┼• ┼ ╳• ╳ ┤• ┐• ┌• ┼ ├ ┤• ┌ ╱ ┐ ├ ⌐ ┼• ¬ ┼ ╲ ▽ ╲ ╳ ┼ ├• ├ ┼ ¬• ┐ ╲• ┼ ┐• ╳ ┤• ⌐ ├ ├• ┐ ┐• ⌐ ¬• ╲ ├• ┐ ╳ ┬ ┼• ┤• ╳•
╳ ┬ ┼ ┌• ⌐ ¬ ┴• ⌐ ┌ ┼ ¬ ┤• ┼• ╳ ⌐ ┐ ┼• ╲ ┴ ¬• ╱ ┼ ┌• ┐• ┐ ┼• ╳ ╲ ┤ ┤• ┐• ╳ ┬ ┼ ┼• ┼ ╳• ╳ ┤• ┐• ┌• ┼ ├ ┤• ┌ ╱ ┐ ├ ⌐ ┼• ¬ ┼ ╲ ▽ ╲ ╳ ┼ ├• ├ ┼ ¬• ┐ ╲• ┼ ┐• ╳ ┤• ⌐ ├ ├• ┐ ┐• ⌐ ¬• ╲ ├• ┐ ╳ ┬ ┼• ┤• ╳•
THE PACKAGE CONTAINS BLUEPRINTS FOR THE NEW TORPEDO GUIDANCE SYSTEM DELIVER TO ADMIRAL SMITH NOW
pigpen
pigpen
substitution
{ "type": "none", "value": null }
beginner
en
112
193
cipher_museum
2.0
public
null
null
cda-0019458
.... .... .. ... . ..... . ..... ... ... .. .... .. .. ... .. . . ... .. . . . ... .. ... .. .... ... ... . ..... .... ..... .... ... . ..... . .... .... .. ... .... .... .... ... .... .... .. .... ... .... .... ... .... . ... .... .. . ..... . . .... .... . ..... . . ... ..... ... ....
.... .... .. ... . ..... . ..... ... ... .. .... .. .. ... .. . . ... .. . . . ... .. ... .. .... ... ... . ..... .... ..... .... ... . ..... . .... .... .. ... .... .... .... ... .... .... .. .... ... .... .... ... .... . ... .... .. . ..... . . .... .... . ..... . . ... ..... ... ....
THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER THE BEST LESSONS SHOW WHERE THE METHOD FAILS BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL
tap_code
tap_code
null
{}
hard
en
133
133
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.
nomenclator-v3-0248
05 21 18 05 11 01
05 21 18 05 11 01
EUREKA
nomenclator
nomenclator
nomenclator
{ "type": "seed", "value": "LIBERTY" }
expert
en
12
17
cipher_museum
2.0
public
null
null
monoalphabetic-v3-0800
TDA ILVA LB JLKAY ES TDA QLLT LB HII AVEI OUT ET ES TDA ILVA LB CLLR TDHT JLVAS TDA WLQIR
TDA ILVA LB JLKAY ES TDA QLLT LB HII AVEI OUT ET ES TDA ILVA LB CLLR TDHT JLVAS TDA WLQIR
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": "HONOR" }
beginner
en
69
89
cipher_museum
2.0
public
null
null