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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
red-type-a-v2-0254 | HAGSSAHONUXFJIKOHGLYIOM | HAGSSAHONUXFJIKOHGLYIOM | CARTHAGE MUST BE DESTROYED | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "TOKYO"
} | advanced | en | 23 | 23 | cipher_museum | 2.0 | public | null | null |
geheimschreiber-v2-0303 | KVDMVJEPAEKMSDNCPMSLHSQQYQIQOCZUAQKROVAJDVAGIILUFLUCHYJUBGXACRYPDPBERMTHBKZIOMI | KVDMVJEPAEKMSDNCPMSLHSQQYQIQOCZUAQKROVAJDVAGIILUFLUCHYJUBGXACRYPDPBERMTHBKZIOMI | RICHMOND HAS FALLEN OUR FORCES HAVE ENTERED THE CITY RESISTANCE IS ENDED INFORM THE PRESIDENT | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "GOTHIC"
} | expert | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
kryha-v3-0294 | VPESLJZUGQFVFJUELJXTJQXBCKUQBMFFOWQXIVLHKBIPDZFFGCIZVKICBNOVVMIIZTNWUQHDFQLPXZL | VPESLJZUGQFVFJUELJXTJQXBCKUQBMFFOWQXIVLHKBIPDZFFGCIZVKICBNOVVMIIZTNWUQHDFQLPXZL | ALL PERSONS BORN OR NATURALIZED IN THE UNITED STATES ARE CITIZENS SUBJECT TO EQUAL PROTECTION | kryha | kryha | machine | {
"type": "keyword",
"value": "PRAGUE"
} | expert | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
nihilist-v3-0275 | 24 36 77 35 26 37 43 35 45 68 65 34 48 44 36 45 88 64 58 47 75 65 59 56 33 36 36 57 56 55 86 24 58 38 75 55 59 58 53 35 48 77 35 47 59 53 38 36 45 56 56 90 54 38 50 46 25 47 68 23 58 68 75 55 46 57 22 35 48 74 45 67 66 43 38 36 64 44 | 24 36 77 35 26 37 43 35 45 68 65 34 48 44 36 45 88 64 58 47 75 65 59 56 33 36 36 57 56 55 86 24 58 38 75 55 59 58 53 35 48 77 35 47 59 53 38 36 45 56 56 90 54 38 50 46 25 47 68 23 58 68 75 55 46 57 22 35 48 74 45 67 66 43 38 36 64 44 | THE BIRTHDAY PARADOX SHOWS THAT COLLISIONS IN HASH FUNCTIONS OCCUR FAR SOONER THAN EXPECTED | nihilist | nihilist | fractionation | {
"polybius": "TRIUMPH",
"keyword": "JUSTICE"
} | advanced | en | 156 | 233 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v2-1410 | QAM WTEEO ATVM MTNO | QAM WTEEO ATVM MTNO | THE WALLS HAVE EARS | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "TRIUMPH"
} | beginner | en | 16 | 19 | cipher_museum | 2.0 | public | null | null |
bifid-v2-0442 | VPBTHKODBFPPAMTLLPOPATHAEPFAEKFHGKHTEILUWRKGWDZPZKUCSDCBUKQCTEGNPGEHGSXDQXLZGD | VPBTHKODBFPPAMTLLPOPATHAEPFAEKFHGKHTEILUWRKGWDZPZKUCSDCBUKQCTEGNPGEHGSXDQXLZGD | YOUR MISSION IF YOU CHOOSE TO ACCEPT IT IS TO EXTRACT THE AGENT FROM BEHIND ENEMY LINES TONIGHT | bifid | bifid | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
two-square-v2-0195 | OMDPREBQVEEQAFOHNTHEIMSMVMHRNRGGTHLCCSEAOGQFEQQGGBIGCTEROGREYFIASMLEOGQFYLEGLEPZ | OMDPREBQVEEQAFOHNTHEIMSMVMHRNRGGTHLCCSEAOGQFEQQGGBIGCTEROGREYFIASMLEOGQFYLEGLEPZ | NATURE IS WRITTEN IN THE LANGUAGE OF MATHEMATICS AND ITS CHARACTERS ARE TRIANGLES AND CIRCLES | two_square | two_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
vigenere-vh-0073 | QWEQXELZHEHCSABZDYWFTSMXDOIQYHMCDCDRMEXVDALCMEKYDDEDTRPZHTNFJRQKPYCC | QWEQXELZHEHCSABZDYWFTSMXDOIQYHMCDCDRMEXVDALCMEKYDDEDTRPZHTNFJRQKPYCC | BLESSED IS THE NATION WHOSE GOD IS THE LORD THE PEOPLE HE CHOSE FOR HIS INHERITANCE | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "PLAYFAIR"
} | intermediate | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
adfgx-v2-0607 | DAADGDGFDFFAXADFAFGXAXAXGXXADFGG | DAADGDGFDFFAXADFAFGXAXAXGXXADFGG | DIVIDE AND CONQUER | adfgx | adfgx | fractionation | {
"polybius": "KAISER",
"columnar": "BERLIN"
} | advanced | en | 32 | 32 | cipher_museum | 2.0 | public | null | null |
kryptos-v3-0069 | JUBAQJEVGUSNLXEXFRFLMNQBFZPIVNLMUEDMNYKLCMAUXJJHLWEZDJEDMERTFMGGFJFNNWJYWNQZHRUSM | JUBAQJEVGUSNLXEXFRFLMNQBFZPIVNLMUEDMNYKLCMAUXJJHLWEZDJEDMERTFMGGFJFNNWJYWNQZHRUSM | DARWIN OBSERVED THAT SPECIES EVOLVE THROUGH NATURAL SELECTION OVER VAST SPANS OF GEOLOGIC TIME | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "SHADOW"
} | advanced | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
double-transposition-v2-0522 | MYINTALGASAWI | MYINTALGASAWI | AWAIT MY SIGNAL | double_transposition | double_transposition | transposition | {
"key1": "WISDOM",
"key2": "COURAGE"
} | advanced | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
cda-0015733 | 816 853 824 813 810 838 800 841 999 814 855 857 824 836 801 859 812 811 999 832 812 873 999 834 812 839 818 859 822 999 815 853 842 836 999 855 859 800 857 824 856 858 824 806 855 999 859 822 814 999 865 824 818 812 841 814 852 814 999 808 825 846 821 813 851 999 862 855 813 854 999 800 999 851 813 847 814 800 857 826 ... | 816 853 824 813 810 838 800 841 999 814 855 857 824 836 801 859 812 811 999 832 812 873 999 834 812 839 818 859 822 999 815 853 842 836 999 855 859 800 857 824 856 858 824 806 855 999 859 822 814 999 865 824 818 812 841 814 852 814 999 808 825 846 821 813 851 999 862 855 813 854 999 800 999 851 813 847 814 800 857 826 ... | FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS THE VIGENERE CIPHER USES A REPEATING KEYWORD | culper_ring | culper_ring | null | {} | medium | en | 78 | 78 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
cda-0006469 | PELCGBTENCUL ERJNEQF CNGVRAPR NAQ PNERSHY GUVAXVAT N FPLGNYR VF N EBQ HFRQ OL FCNEGNAF GB RAPELCG ZRFFNTRF | PELCGBTENCUL ERJNEQF CNGVRAPR NAQ PNERSHY GUVAXVAT N FPLGNYR VF N EBQ HFRQ OL FCNEGNAF GB RAPELCG ZRFFNTRF | CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 90 | 90 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
one-time-pad-001 | XFVKNAPHVXIP | XFVKNAPHVXIP | ATTACK AT DAWN | one_time_pad | one_time_pad | stream | {
"type": "pad",
"value": "XMCKLQPOS (repeating)"
} | expert | en | 12 | 12 | cipher_museum | 0.2 | public | null | null |
jn25-v3-0119 | 09908 09996 09993 09907 09997 09993 09995 09993 09990 09993 09995 09997 09902 09907 | 09908 09996 09993 09907 09997 09993 09995 09993 09990 09993 09995 09997 09902 09907 | THE SIEGE BEGINS | jn25 | jn25 | codebook | {
"type": "additive",
"value": "99999"
} | expert | en | 70 | 83 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v3-0078 | OPUHUBHVDJMTJBCDHWONPTWDVXPXMUHQCSLBJKULJAFNCWTXLMVTOFSLMSQWUFSVWDCTVJFWOCTVJDFDKSQPTLLIG | OPUHUBHVDJMTJBCDHWONPTWDVXPXMUHQCSLBJKULJAFNCWTXLMVTOFSLMSQWUFSVWDCTVJFWOCTVJDFDKSQPTLLIG | THE DEAD DROP ALLOWS AGENTS TO EXCHANGE INFORMATION WITHOUT MEETING FACE TO FACE IN PUBLIC | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 89 | 89 | cipher_museum | 2.0 | public | null | null |
rail-fence-v3-0052 | DEDSDOEOLIONEHNREFGNTNOIGOAASDAONTGGAUNVOARTEOTHDLRELYEGGTATLDUACRGOHOBTA | DEDSDOEOLIONEHNREFGNTNOIGOAASDAONTGGAUNVOARTEOTHDLRELYEGGTATLDUACRGOHOBTA | DO NOT GO GENTLE INTO THAT GOOD NIGHT OLD AGE SHOULD BURN AND RAVE AT CLOSE OF DAY RAGE RAGE | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 7
} | intermediate | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-102 | ETPNIHUXRPWFGALALTGRCVBKGSTXWGWLZVTIQAYGHVKCTBWBFXWFAMDYZVJSRZMW | ETPNIHUXRPWFGALALTGRCVBKGSTXWGWLZVTIQAYGHVKCTBWBFXWFAMDYZVJSRZMW | CRYPTOGRAPHY IS THE PRACTICE OF SECURING COMMUNICATIONS FROM ADVERSARIES | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 64 | 64 | cipher_museum | 0.2 | public | null | null |
confederate-vigenere-v2-0084 | WNBYSIVZINUTUQBXOBWUAMVUHHSGKVDOHUALAGKRZDJKZHGFAZFHBWAGGNVRSEVUBPLBQRFEYADSJMLCQSF | WNBYSIVZINUTUQBXOBWUAMVUHHSGKVDOHUALAGKRZDJKZHGFAZFHBWAGGNVRSEVUBPLBQRFEYADSJMLCQSF | KNOWLEDGE WITHOUT WISDOM IS A DANGEROUS THING AND WISDOM WITHOUT COURAGE IS ULTIMATELY WORTHLESS | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "MANCHESTER"
} | intermediate | en | 83 | 83 | cipher_museum | 2.0 | public | null | null |
copiale-159 | I8 K6 M5 S7 H7 A3 J2 I8 D5 G8 H1 K0 T2 Q2 R1 I7 I5 M1 J1 B7 A1 J8 H6 P5 Y4 K5 I5 M5 A0 G8 L6 P0 Y4 K1 L9 A5 N0 L6 K7 R5 D2 J4 J5 | I8 K6 M5 S7 H7 A3 J2 I8 D5 G8 H1 K0 T2 Q2 R1 I7 I5 M1 J1 B7 A1 J8 H6 P5 Y4 K5 I5 M5 A0 G8 L6 P0 Y4 K1 L9 A5 N0 L6 K7 R5 D2 J4 J5 | FORTUNE FAVORS THE BOLD AND THE BRAVE WHO DARE TO ACT | copiale | copiale | substitution | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 86 | 128 | cipher_museum | 0.2 | public | null | null |
enigma-v3-0510 | UMZFYGQVYSIZDNACHLRZLJLBKQYFBDTQKBHSRLHAXKWBTNYZUNYUROZYALRNNUWIBIDARULERWLRVYSCHSYHUKJJWCDRPKYQGYLYTRZIBBVNKQKJDBABZQOGIYPFOJGQTJGBMDGQNTXCPNCUPJWEMVFJHBHQHEIIN | UMZFYGQVYSIZDNACHLRZLJLBKQYFBDTQKBHSRLHAXKWBTNYZUNYUROZYALRNNUWIBIDARULERWLRVYSCHSYHUKJJWCDRPKYQGYLYTRZIBBVNKQKJDBABZQOGIYPFOJGQTJGBMDGQNTXCPNCUPJWEMVFJHBHQHEIIN | WHENEVER ANY FORM OF GOVERNMENT BECOMES DESTRUCTIVE OF THESE ENDS IT IS THE RIGHT OF THE PEOPLE TO ALTER OR TO ABOLISH IT AND TO INSTITUTE NEW GOVERNMENT LAYING ITS FOUNDATION ON SUCH PRINCIPLES | enigma | enigma | machine | {
"type": "rotor_start",
"value": "MNO"
} | expert | en | 161 | 161 | cipher_museum | 2.0 | public | null | null |
cda-0010461 | FHOFGVGHGVBA PVCUREF ZNC RNPU YRGGRE GB N QVSSRERAG YRGGRE PNRFNE FUVSGRQ GUR NYCUNORG OL GUERR CBFVGVBAF UHZNA ERNQNOYR BHGCHG FUBHYQ FUBJ NYY ERNFBAVAT FGRCF ZBQREA RAPELCGVBA VF ABG OEBXRA OL YRGGRE SERDHRAPL | FHOFGVGHGVBA PVCUREF ZNC RNPU YRGGRE GB N QVSSRERAG YRGGRE PNRFNE FUVSGRQ GUR NYCUNORG OL GUERR CBFVGVBAF UHZNA ERNQNOYR BHGCHG FUBHYQ FUBJ NYY ERNFBAVAT FGRCF ZBQREA RAPELCGVBA VF ABG OEBXRA OL YRGGRE SERDHRAPL | SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 180 | 180 | synthetic_educational | null | null | [] | |
alberti-disk-v2-0453 | YRHZSRQOINXCKTMMHRVHBRQSVPMWVFBNMNUFTEEWUTMOLQPGSCWWZHPUURXBYNRJCRTXGZHUPIXBZ | YRHZSRQOINXCKTMMHRVHBRQSVPMWVFBNMNUFTEEWUTMOLQPGSCWWZHPUURXBYNRJCRTXGZHUPIXBZ | THE REGIMENT SHALL ADVANCE AT FIRST LIGHT SUPPORTED BY ARTILLERY ON THE EASTERN FLANK TODAY | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 10
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
purple-v2-0173 | KCWCSHLQQJRWYJMTIRYUHHKONBWHSNQCIMTWBLQFVHYWZPQMQBBSLSJKEVRMEMOOAP | KCWCSHLQQJRWYJMTIRYUHHKONBWHSNQCIMTWBLQFVHYWZPQMQBBSLSJKEVRMEMOOAP | WE ARE SUCH STUFF AS DREAMS ARE MADE ON AND OUR LITTLE LIFE IS ROUNDED WITH A SLEEP | purple | purple | machine | {
"type": "seed",
"value": "YAMAMOTO"
} | expert | en | 66 | 66 | cipher_museum | 2.0 | public | null | null |
cda-0010465 | ULF FGTU PFWUPOW TLQX XLFVG UII NIVIPH GEKMT GMEUTJGBP EJQLFVU UFEDL YIZ QPHGSO WFGWSJXZ QCUUISW C USEOWRBSIOX VPPP TLQVMH TLQX JXT VGBTSOMPH | ULF FGTU PFWUPOW TLQX XLFVG UII NIVIPH GEKMT GMEUTJGBP EJQLFVU UFEDL YIZ QPHGSO WFGWSJXZ QCUUISW C USEOWRBSIOX VPPP TLQVMH TLQX JXT VGBTSOMPH | THE BEST LESSONS SHOW WHERE THE METHOD FAILS CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS A TRANSPARENT TOOL SHOULD SHOW ITS REASONING | gronsfeld | gronsfeld | null | {
"key": "141421"
} | hard | en | 120 | 120 | synthetic_educational | null | null | [] | |
caesar-vj-0101 | JE WET RU JXU WBEHO | JE WET RU JXU WBEHO | TO GOD BE THE GLORY | caesar | caesar | substitution | {
"type": "shift",
"value": 16
} | beginner | en | 15 | 19 | cipher_museum | 2.0 | public | null | null |
scytale-v3-0180 | WTAHRLNSEHPNELOIORARTWDSMUXTOOHAEMLXDFGONHOFXOIALDIROXETIEYSTRXSANWEOAEXIMTOTWLVX | WTAHRLNSEHPNELOIORARTWDSMUXTOOHAEMLXDFGONHOFXOIALDIROXETIEYSTRXSANWEOAEXIMTOTWLVX | WHAT DOES IT PROFIT A MAN TO GAIN THE WHOLE WORLD AND YET LOSE HIS OWN IMMORTAL SOUL FOREVER | scytale | scytale | transposition | {
"type": "integer",
"value": 9
} | intermediate | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
vigenere-v2-1279 | JCAHRJHUOJISRBDHRR | JCAHRJHUOJISRBDHRR | CONTACT HAS BEEN MADE | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "HONOR"
} | intermediate | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
two-square-172 | UAGAMUVOUSFCGKCQNHPC | UAGAMUVOUSFCGKCQNHPC | RENDEZVOUS AT MIDNIGHT | two_square | two_square | polygraphic | {
"key1": "ENIGMA",
"key2": "CRYPTO"
} | advanced | en | 20 | 20 | cipher_museum | 0.2 | public | null | null |
bacon-cipher-v2-0022 | AAABB ABAAA BABAA ABAAA AAABB AABAA AAAAA ABBAA AAABB AAABA ABBAB ABBAA ABBBB BAABB AABAA BAAAA | AAABB ABAAA BABAA ABAAA AAABB AABAA AAAAA ABBAA AAABB AAABA ABBAB ABBAA ABBBB BAABB AABAA BAAAA | DIVIDE AND CONQUER | bacon_cipher | bacon_cipher | steganography | {
"type": "none",
"value": null
} | beginner | en | 80 | 95 | cipher_museum | 2.0 | public | null | null |
pigpen-v2-0054 | ⌐ ┐• ├• ▽ ┤• ┤ ╳ ┬ ┼ ┌• ┤• ╳ ┤• ├• ⌐ ¬ ¬ ┐• ┤• ╲ ╲ ┼ ╲ ╳ ┬ ┼ ┐• ⌐ ┌• ┌• ⌐ ┬ ⌐ ┼• ┼• ┤• ¬ ┴• ╳ ┤• ┼• ┐ ┌ ┬ ╳ ⌐ ┴ ╲ ┤• ¬• ╱ ╳ ┼ ╲ ┐ ¬• ┼ ┼• ¬ ┼ ┐ ╲ ┐ ├• ┌• ┼ ┐• ⌐ ╳ ┐ ╲• ┼ ┼• ┤• ╳• | ⌐ ┐• ├• ▽ ┤• ┤ ╳ ┬ ┼ ┌• ┤• ╳ ┤• ├• ⌐ ¬ ¬ ┐• ┤• ╲ ╲ ┼ ╲ ╳ ┬ ┼ ┐• ⌐ ┌• ┌• ⌐ ┬ ⌐ ┼• ┼• ┤• ¬ ┴• ╳ ┤• ┼• ┐ ┌ ┬ ╳ ⌐ ┴ ╲ ┤• ¬• ╱ ╳ ┼ ╲ ┐ ¬• ┼ ┼• ¬ ┼ ┐ ╲ ┐ ├• ┌• ┼ ┐• ⌐ ╳ ┐ ╲• ┼ ┼• ┤• ╳• | ARMY OF THE POTOMAC CROSSES THE RAPPAHANNOCK TONIGHT ABSOLUTE SILENCE IS IMPERATIVE NOW | pigpen | pigpen | substitution | {
"type": "none",
"value": null
} | beginner | en | 104 | 178 | cipher_museum | 2.0 | public | null | null |
cda-0012636 | 821 825 856 857 844 853 825 807 801 835 999 808 824 846 823 814 853 854 999 800 851 814 999 857 813 802 808 822 813 852 854 999 839 843 859 999 845 853 842 859 814 806 857 824 844 841 999 807 833 802 854 855 824 808 800 835 999 808 825 847 823 813 853 856 999 859 813 800 806 821 999 868 822 874 999 836 844 810 814 851 ... | 821 825 856 857 844 853 825 807 801 835 999 808 824 846 823 814 853 854 999 800 851 814 999 857 813 802 808 822 813 852 854 999 839 843 859 999 845 853 842 859 814 806 857 824 844 841 999 807 833 802 854 855 824 808 800 835 999 808 825 847 823 813 853 856 999 859 813 800 806 821 999 868 822 874 999 836 844 810 814 851 ... | HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS | culper_ring | culper_ring | null | {} | hard | en | 182 | 182 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
cda-0013427 | CHED ALOR ORDA LOKS HYOK EDYC HORC HEDA LCTA IINO TAII NQOK EEDY QOKE DYLK AIIN AIII NOKE DYCH EDYD ALQO KEED YLKA IINS HEED YDAR ALSH ORAI IINC HOLR AIIN OTAI NSHE OLOK SHY | CHED ALOR ORDA LOKS HYOK EDYC HORC HEDA LCTA IINO TAII NQOK EEDY QOKE DYLK AIIN AIII NOKE DYCH EDYD ALQO KEED YLKA IINS HEED YDAR ALSH ORAI IINC HOLR AIIN OTAI NSHE OLOK SHY | THE ARCHITECTURE SHOULD MAKE MISUSE HARDER GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY | voynich_render | voynich_render | null | {} | hard | en | 139 | 139 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
cda-0004740 | DDIEK ONNSI HNDEG NSIFE TPYRI EXFLR UCANV XILOB RPEEX EMDLY HTNXA AUIPY ETXNN CCTIE YX | DDIEK ONNSI HNDEG NSIFE TPYRI EXFLR UCANV XILOB RPEEX EMDLY HTNXA AUIPY ETXNN CCTIE YX | DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX | scytale | scytale | null | {
"cols": 8
} | medium | en | 72 | 72 | synthetic_educational | null | null | [
"column_count_search",
"anagram_recovery"
] | Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter. |
cda-0010521 | BWHPL NRNTR REERE EDROE ATCIA TISRC VNFEU RNCHE TZECA STACO NTKTE ECEIR ARNIB ERCES HIRIS GNLEO OLCEE FOESA PTZHC TTNEO CXONK SIHEA IIEPO EMOXR LEMLE XGSPA RBVEN XCYYA FRTPT HCOSI SFXEW SLEWI AOEHT EDBIX | BWHPL NRNTR REERE EDROE ATCIA TISRC VNFEU RNCHE TZECA STACO NTKTE ECEIR ARNIB ERCES HIRIS GNLEO OLCEE FOESA PTZHC TTNEO CXONK SIHEA IIEPO EMOXR LEMLE XGSPA RBVEN XCYYA FRTPT HCOSI SFXEW SLEWI AOEHT EDBIX | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE | scytale | scytale | null | {
"cols": 10
} | hard | en | 170 | 170 | synthetic_educational | null | null | [] | |
rot13-v2-0071 | VG JNF GUR ORFG BS GVZRF VG JNF NA NTR BS JVFQBZ NAQ NA NTR BS HGGRE SBBYVFUARFF | VG JNF GUR ORFG BS GVZRF VG JNF NA NTR BS JVFQBZ NAQ NA NTR BS HGGRE SBBYVFUARFF | IT WAS THE BEST OF TIMES IT WAS AN AGE OF WISDOM AND AN AGE OF UTTER FOOLISHNESS | rot13 | rot13 | substitution | {
"type": "none",
"value": null
} | beginner | en | 63 | 80 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-v3-0205 | LPJOGDUXXIIDM | LPJOGDUXXIIDM | FULL SAIL AHEAD | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "1,3,5,2,4,6"
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
hill-276 | DHQBRAQISPHIMCDMKYNNVGCDMHKSPVNNBUCMPVAKJUPQELQUJHHB | DHQBRAQISPHIMCDMKYNNVGCDMHKSPVNNBUCMPVAKJUPQELQUJHHB | ALL THE WORLDS A STAGE AND ALL THE MEN AND WOMEN MERELY PLAYERS | hill | hill | polygraphic | {
"a": 7,
"b": 5,
"c": 2,
"d": 3
} | advanced | en | 52 | 52 | cipher_museum | 0.2 | public | null | null |
cda-0014683 | K r· L ⌐ X· K ┘· ┐ L ⌒· r Γ· ┐· r· L ┌· L ⌣ K L ─ Γ X K r· L ┐ L ⌒· ⌒ Γ· K r· K r· L ┐· └ ⌐ Γ· ─ K L ⌣ K Γ· K X L └ ⌐· ⌐· ┌· L └· X· L ─ r ⌒· ⌐ ─ ⌐ └ ⌒· X Γ· X r ⌐ ─ ┌· L K· L ⌐ └ ⌒ L ⌐ ┐ r Γ· ┐· r· L ┌· X K ⌒ ┘· X └· X· ⌐ ┌· L r Γ· ┐· r· L ┌· L ─ r ┌· ⌒· ┐· K X Γ Γ· ¬· ┌· ⌐ ┐· r· X ⌒ Γ· K r· K ⌒ ┘· ┐· ┘· └ ⌒· ¬ Γ· X· ... | K r· L ⌐ X· K ┘· ┐ L ⌒· r Γ· ┐· r· L ┌· L ⌣ K L ─ Γ X K r· L ┐ L ⌒· ⌒ Γ· K r· K r· L ┐· └ ⌐ Γ· ─ K L ⌣ K Γ· K X L └ ⌐· ⌐· ┌· L └· X· L ─ r ⌒· ⌐ ─ ⌐ └ ⌒· X Γ· X r ⌐ ─ ┌· L K· L ⌐ └ ⌒ L ⌐ ┐ r Γ· ┐· r· L ┌· X K ⌒ ┘· X └· X· ⌐ ┌· L r Γ· ┐· r· L ┌· L ─ r ┌· ⌒· ┐· K X Γ Γ· ¬· ┌· ⌐ ┐· r· X ⌒ Γ· K r· K ⌒ ┘· ┐· ┘· └ ⌒· ¬ Γ· X· ... | THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS | pigpen | pigpen | null | {} | medium | en | 65 | 65 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
kama-sutra-v2-0133 | UHJQXE KHYLU EHW | UHJQXE KHYLU EHW | SIGNAL FIRES LIT | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "VATSYANA"
} | intermediate | en | 14 | 16 | cipher_museum | 2.0 | public | null | null |
nomenclator-v3-0281 | 02 12 05 19 19 05 04 01 18 05 60 13 05 05 11 06 15 18 20 08 05 25 19 08 01 12 12 09 14 08 05 18 09 20 60 05 01 18 20 08 61 60 16 05 01 03 05 13 01 11 05 18 19 19 08 01 12 12 02 05 03 01 12 12 05 04 19 15 14 19 | 02 12 05 19 19 05 04 01 18 05 60 13 05 05 11 06 15 18 20 08 05 25 19 08 01 12 12 09 14 08 05 18 09 20 60 05 01 18 20 08 61 60 16 05 01 03 05 13 01 11 05 18 19 19 08 01 12 12 02 05 03 01 12 12 05 04 19 15 14 19 | BLESSED ARE THE MEEK FOR THEY SHALL INHERIT THE EARTH AND THE PEACEMAKERS SHALL BE CALLED SONS | nomenclator | nomenclator | nomenclator | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 140 | 209 | cipher_museum | 2.0 | public | null | null |
porta-v2-0093 | AUYKPYQNNWRFHGUNLJUYAWAIOAMAUFLGOWLNDGHMANWBNCXZTAWWDCMGYRSNRVBWCKINXRXITYLRXKNAHE | AUYKPYQNNWRFHGUNLJUYAWAIOAMAUFLGOWLNDGHMANWBNCXZTAWWDCMGYRSNRVBWCKINXRXITYLRXKNAHE | THE PACKAGE CONTAINS BLUEPRINTS FOR THE NEW TORPEDO GUIDANCE SYSTEM DELIVER TO ADMIRAL SMITH NOW | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "NAPLES"
} | intermediate | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
cda-0002719 | CQN TJBRBTR NGJVRWJCRXW ORWMB ANYNJCNM CARPAJVB RW LRYQNACNGC CQN XWN CRVN YJM RB CQNXANCRLJUUH DWKANJTJKUN RO DBNM LXAANLCUH LJNBJA BQROCNM CQN JUYQJKNC KH CQANN YXBRCRXWB OARNMVJW NBCRVJCNM TNH UNWPCQ OAXV BCJCRBCRLB | CQN TJBRBTR NGJVRWJCRXW ORWMB ANYNJCNM CARPAJVB RW LRYQNACNGC CQN XWN CRVN YJM RB CQNXANCRLJUUH DWKANJTJKUN RO DBNM LXAANLCUH LJNBJA BQROCNM CQN JUYQJKNC KH CQANN YXBRCRXWB OARNMVJW NBCRVJCNM TNH UNWPCQ OAXV BCJCRBCRLB | THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS | gronsfeld | gronsfeld | null | {
"key": "99999"
} | hard | en | 188 | 188 | synthetic_educational | null | null | [
"kasiski_examination",
"digit_key_brute_force"
] | Gronsfeld: Vigenère variant with a digit-only key (0–9 per position). |
vernam-v3-0009 | RFPGIWAUBXMLQFOG | RFPGIWAUBXMLQFOG | RENDER UNTO CAESAR | vernam | vernam | stream | {
"type": "pad",
"value": "ABCDEFGH (repeating)"
} | expert | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
vic-v3-0052 | 71861918218280869128083869119104918211786838209112748280900192275928986486789493804916219080181749589482808948280 | 71861918218280869128083869119104918211786838209112748280900192275928986486789493804916219080181749589482808948280 | DO NOT GO GENTLE INTO THAT GOOD NIGHT OLD AGE SHOULD BURN AND RAVE AT CLOSE OF DAY RAGE RAGE | vic | vic | substitution | {
"type": "keyword",
"value": "HOLLOW"
} | advanced | en | 113 | 113 | cipher_museum | 2.0 | public | null | null |
bifid-v3-0566 | RGLGTGDQOQIBDBUHLQXRGLDCGKTHQRUEETBKTHQRYLNOVRBLCTERORGKLGWRPBTBDADPOCNBNDLPOAPTHIPGBDKEPEIPRGWDTDPHIPRQDARDTAHHEIPARDTBXLERDATRSGPETHWAPWAWKKXPRHRKISATNEREHAP | RGLGTGDQOQIBDBUHLQXRGLDCGKTHQRUEETBKTHQRYLNOVRBLCTERORGKLGWRPBTBDADPOCNBNDLPOAPTHIPGBDKEPEIPRGWDTDPHIPRQDARDTAHHEIPARDTBXLERDATRSGPETHWAPWAWKKXPRHRKISATNEREHAP | THE LORD OUR GOD IS ONE LORD AND THOU SHALT LOVE THE LORD THY GOD WITH ALL THINE HEART AND WITH ALL THY SOUL AND WITH ALL THY MIGHT AND THESE WORDS WHICH I COMMAND THEE THIS DAY SHALL BE IN THINE HEART | bifid | bifid | fractionation | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 159 | 159 | cipher_museum | 2.0 | public | null | null |
chaocipher-v2-0007 | BWTYXJOQUITFYE | BWTYXJOQUITFYE | SIGNAL FIRES LIT | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
trithemius-094 | IU YDW YNL JNCE AS HXCVK BN RWP RGE XQUWY UM BRWPE | IU YDW YNL JNCE AS HXCVK BN RWP RGE XQUWY UM BRWPE | IT WAS THE BEST OF TIMES IT WAS THE WORST OF TIMES | trithemius | trithemius | polyalphabetic | {
"type": "offset",
"value": 0
} | beginner | en | 39 | 50 | cipher_museum | 0.2 | public | null | null |
kama-sutra-v2-0008 | LXLDA VLQVLYQZ XCVQG | LXLDA VLQVLYQZ XCVQG | ENEMY RETREATS NORTH | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "SANSKRIT"
} | intermediate | en | 18 | 20 | cipher_museum | 2.0 | public | null | null |
cda-0005043 | AVRHW MXJXL ZXWVN LDIKI UWBIJ CSUXJ FEWNE PWEKO LKQZY | AVRHW MXJXL ZXWVN LDIKI UWBIJ CSUXJ FEWNE PWEKO LKQZY | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS | autokey | autokey | null | {
"primer": "HONEST"
} | medium | en | 45 | 45 | synthetic_educational | null | null | [
"running_key_analysis",
"index_of_coincidence"
] | Autokey: Vigenère where the plaintext extends the key — harder to Kasiski-attack. |
jefferson-disk-v3-0100 | CZKMQYYXSERZIAZH | CZKMQYYXSERZIAZH | RENDER UNTO CAESAR | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "6,1,4,2,5,3"
} | expert | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
enigma-v3-0139 | MQBWABBHNLGMT | MQBWABBHNLGMT | THE APPLE FALLS | enigma | enigma | machine | {
"type": "rotor_start",
"value": "DEF"
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
cda-0013134 | r ⌐ L X ⌐ ┌· X r· Γ· ⌐· K L Γ K r· L ⌐ └ ┐· r· ⌐ ¬ L K ¬ ⌒· K r· ┌· L L ┐· ┘· X Γ· K Γ· ┘· ─ X | r ⌐ L X ⌐ ┌· X r· Γ· ⌐· K L Γ K r· L ⌐ └ ┐· r· ⌐ ¬ L K ¬ ⌒· K r· ┌· L L ┐· ┘· X Γ· K Γ· ┘· ─ X | CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS | pigpen | pigpen | null | {} | easy | en | 20 | 20 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
cda-0019247 | 5.4.4 16.6.1 5.6.9 12.6.1 4.4.4 17.1.4 17.2.8 15.2.2 13.3.8 19.3.2 7.3.9 3.1.3 13.6.9 5.4.7 1.5.10 5.6.9 6.5.4 11.3.1 1.1.2 17.3.10 7.6.2 14.1.1 7.1.1 20.3.8 4.3.5 4.2.4 9.6.7 7.6.5 17.5.10 8.6.5 14.5.8 1.2.6 7.1.8 3.6.3 10.5.9 3.4.5 4.6.5 14.4.7 10.4.7 12.5.8 17.4.4 10.2.8 1.3.6 4.2.8 20.2.3 5.3.3 4.4.1 6.3.4 11.1.5 1... | 5.4.4 16.6.1 5.6.9 12.6.1 4.4.4 17.1.4 17.2.8 15.2.2 13.3.8 19.3.2 7.3.9 3.1.3 13.6.9 5.4.7 1.5.10 5.6.9 6.5.4 11.3.1 1.1.2 17.3.10 7.6.2 14.1.1 7.1.1 20.3.8 4.3.5 4.2.4 9.6.7 7.6.5 17.5.10 8.6.5 14.5.8 1.2.6 7.1.8 3.6.3 10.5.9 3.4.5 4.6.5 14.4.7 10.4.7 12.5.8 17.4.4 10.2.8 1.3.6 4.2.8 20.2.3 5.3.3 4.4.1 6.3.4 11.1.5 1... | SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS A TRANSPARENT TOOL SHOULD SHOW ITS REASONING | arnold_andre | arnold_andre | null | {} | hard | en | 177 | 177 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
kryptos-v2-0171 | UUBNXNAGMKTBIAUUBSYJZDGTTPNGUBHXXTFSEEBWIHVXDMHMBDVSRUIJYLKI | UUBNXNAGMKTBIAUUBSYJZDGTTPNGUBHXXTFSEEBWIHVXDMHMBDVSRUIJYLKI | THIS ABOVE ALL TO THINE OWN SELF BE TRUE AND IT MUST FOLLOW AS NIGHT THE DAY | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "LANGLEY"
} | advanced | en | 60 | 60 | cipher_museum | 2.0 | public | null | null |
adfgx-066 | GDDDXAXGAFADADXAAFFXGADDAAXAGFDXGDAAAFGFAD | GDDDXAXGAFADADXAAFFXGADDAAXAGFDXGDAAAFGFAD | THE PACKAGE IS DELIVERED | adfgx | adfgx | fractionation | {
"polybius": "CIPHER",
"columnar": "MUSEUM"
} | advanced | en | 42 | 42 | cipher_museum | 0.2 | public | null | null |
cda-0011923 | 20 8 5 15 14 5 20 9 13 5 16 1 4 9 19 20 8 5 15 18 5 20 9 3 1 12 12 25 21 14 2 18 5 1 11 1 2 12 5 9 6 21 19 5 4 3 15 18 18 5 3 20 12 25 16 15 12 25 2 9 21 19 5 14 3 15 4 5 4 12 5 20 20 5 18 19 1 19 16 1 9 18 19 15 6 14 21 13 2 5 18 19 6 18 15 13 15 14 5 20 15 6 9 22 5 4 9 7 18 1 16 8 1 14 4 20 18 9 7 18 1 16 8 6 18 5 17... | 20 8 5 15 14 5 20 9 13 5 16 1 4 9 19 20 8 5 15 18 5 20 9 3 1 12 12 25 21 14 2 18 5 1 11 1 2 12 5 9 6 21 19 5 4 3 15 18 18 5 3 20 12 25 16 15 12 25 2 9 21 19 5 14 3 15 4 5 4 12 5 20 20 5 18 19 1 19 16 1 9 18 19 15 6 14 21 13 2 5 18 19 6 18 15 13 15 14 5 20 15 6 9 22 5 4 9 7 18 1 16 8 1 14 4 20 18 9 7 18 1 16 8 6 18 5 17... | THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 153 | 153 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
joseon-yeokhak-v2-0412 | FGNMKGJVGKWUDGJME | FGNMKGJVGKWUDGJME | NOVUS ORDO SECLORUM | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "DYNASTY"
} | beginner | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
polybius-v3-0038 | 32 15 11 43 45 42 15 44 52 24 13 15 13 45 44 34 33 13 15 | 32 15 11 43 45 42 15 44 52 24 13 15 13 45 44 34 33 13 15 | MEASURE TWICE CUT ONCE | polybius | polybius | substitution | {
"type": "none",
"value": null
} | beginner | en | 38 | 56 | cipher_museum | 2.0 | public | null | null |
cda-0017180 | RFLOQ LFQET XPOEU FKHJH KADNL DKYHP YZNDD OVMYH IHMWV AKVAF VUOAK INTVY UIPUO YZRDD AQRQY FXRCZ URZRE CYJGX BEMRQ YJCJD AHRIR PUPNF PMZIL POYTL EJVWZ RAIBL BI | RFLOQ LFQET XPOEU FKHJH KADNL DKYHP YZNDD OVMYH IHMWV AKVAF VUOAK INTVY UIPUO YZRDD AQRQY FXRCZ URZRE CYJGX BEMRQ YJCJD AHRIR PUPNF PMZIL POYTL EJVWZ RAIBL BI | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION | one_time_pad | one_time_pad | null | {} | hard | en | 132 | 132 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
hill-v3-0345 | IMHLSWDNCJDT | IMHLSWDNCJDT | YANKEE DOODLE | hill | hill | polygraphic | {
"a": 9,
"b": 2,
"c": 7,
"d": 5
} | advanced | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v3-0386 | NK SJQK KQADOP TP YKS WKSGN ATVD QADI NK SJQK YKS QABP BP QAD RKGNDJ OSGD KE TGG ODGBRBKJP | NK SJQK KQADOP TP YKS WKSGN ATVD QADI NK SJQK YKS QABP BP QAD RKGNDJ OSGD KE TGG ODGBRBKJP | DO UNTO OTHERS AS YOU WOULD HAVE THEM DO UNTO YOU THIS IS THE GOLDEN RULE OF ALL RELIGIONS | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "THUNDER"
} | beginner | en | 72 | 90 | cipher_museum | 2.0 | public | null | null |
enigma-131 | GBILMHHUVGKOY | GBILMHHUVGKOY | CHANGE OF PLANS | enigma | enigma | machine | {
"type": "rotor_start",
"value": "QWE"
} | expert | en | 13 | 13 | cipher_museum | 0.2 | public | null | null |
cda-0020986 | 12.3.3 4.5.6 4.3.8 2.4.7 16.2.6 11.1.1 14.4.3 10.6.5 4.4.5 7.1.2 9.4.10 16.4.8 7.2.6 10.6.10 10.4.8 5.6.2 7.1.4 18.4.7 6.5.1 10.2.3 1.5.7 16.4.4 2.3.6 20.1.10 17.5.7 10.2.10 6.2.6 3.4.5 13.3.3 5.4.1 18.4.9 2.1.9 9.3.4 7.6.1 7.2.9 15.2.1 9.3.5 7.5.2 5.5.1 13.6.4 14.4.10 8.2.4 13.4.5 3.4.5 20.1.2 16.2.4 16.5.1 15.2.4 7.3... | 12.3.3 4.5.6 4.3.8 2.4.7 16.2.6 11.1.1 14.4.3 10.6.5 4.4.5 7.1.2 9.4.10 16.4.8 7.2.6 10.6.10 10.4.8 5.6.2 7.1.4 18.4.7 6.5.1 10.2.3 1.5.7 16.4.4 2.3.6 20.1.10 17.5.7 10.2.10 6.2.6 3.4.5 13.3.3 5.4.1 18.4.9 2.1.9 9.3.4 7.6.1 7.2.9 15.2.1 9.3.5 7.5.2 5.5.1 13.6.4 14.4.10 8.2.4 13.4.5 3.4.5 20.1.2 16.2.4 16.5.1 15.2.4 7.3... | THE MESSAGE WAS HIDDEN BUT NOT SECURE ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION | arnold_andre | arnold_andre | null | {} | hard | en | 134 | 134 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
cda-0016278 | field roads enemy quiet under enter night cross years above night above large yield swift intel scout clear again naval roads enemy vital exact alert | field roads enemy quiet under enter night cross years above night above large yield swift intel scout clear again naval roads enemy vital exact alert | FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION THE INDEX OF COINCIDENCE IS A USEFUL CLUE CERTAINLY | 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-0009721 | TNHSHSEXESMXBHEXEOTXSWHXTWOXLHDXEEFXSRAXSEIXOTLX | TNHSHSEXESMXBHEXEOTXSWHXTWOXLHDXEEFXSRAXSEIXOTLX | THE BEST LESSONS SHOW WHERE THE METHOD FAILS | scytale | scytale | null | {
"cols": 12
} | medium | en | 48 | 48 | synthetic_educational | null | null | [] | |
lorenz-v2-0177 | WESHALLFIGHTONTHEBEACHEQANDWESHALLFIGHTONTHELANDINGGROWNDSANDINTHEFIELDS | WESHALLFIGHTONTHEBEACHEQANDWESHALLFIGHTONTHELANDINGGROWNDSANDINTHEFIELDS | WE SHALL FIGHT ON THE BEACHES AND WE SHALL FIGHT ON THE LANDING GROUNDS AND IN THE FIELDS | lorenz | lorenz | machine | {
"type": "seed",
"value": "FISH"
} | expert | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
diana-v3-0514 | ADNWTBYJYXAKHYLLXLLVFFYWLWGZVYQIDXJHDKMDGTYYXASAVCYXQJIFMZQZOKMDNERABYMDZAIGBMDYWIKORXERZRXBPLAAKZCYXAQWFFGTGZMMUGKPPBABRRBFKUYRTTXAMSOPNDQSSYQSZOZCJIWSDFBRNUZB | ADNWTBYJYXAKHYLLXLLVFFYWLWGZVYQIDXJHDKMDGTYYXASAVCYXQJIFMZQZOKMDNERABYMDZAIGBMDYWIKORXERZRXBPLAAKZCYXAQWFFGTGZMMUGKPPBABRRBFKUYRTTXAMSOPNDQSSYQSZOZCJIWSDFBRNUZB | 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 | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
cda-0012107 | ICCE EZCT SRKY FJYM CVNY SIBR ARSS XMOK IRMH KCNI UEEB PEHP WWLM CJXA UROV TANS GENP QBAK IQDB DLUB VICJ MQWB IPBQ YTDO TYCI ERLK IKWV | ICCE EZCT SRKY FJYM CVNY SIBR ARSS XMOK IRMH KCNI UEEB PEHP WWLM CJXA UROV TANS GENP QBAK IQDB DLUB VICJ MQWB IPBQ YTDO TYCI ERLK IKWV | THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES CAREFULLY | vernam | vernam | null | {} | hard | en | 108 | 108 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
kl7-012 | AJVUJEWKLBGNVUVC | AJVUJEWKLBGNVUVC | CIPHER KEY CHANGED | kl7 | kl7 | machine | {
"type": "seed",
"value": "TSEC"
} | expert | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
bazeries-v2-0215 | WYAPIBWTIJPRPJFKOTJPOOTOPTIBYQLYFYIYWTZBUAPYIQOTYSJEWNYMTMHXOBEIOFTUARIBIBGTYGBP | WYAPIBWTIJPRPJFKOTJPOOTOPTIBYQLYFYIYWTZBUAPYIQOTYSJEWNYMTMHXOBEIOFTUARIBIBGTYGBP | THE BABINGTON PLOT TO ASSASSINATE QUEEN ELIZABETH WAS UNCOVERED BY FRANCIS WALSINGHAM IN TIME | bazeries | bazeries | transposition | {
"type": "integer",
"value": 23
} | advanced | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-006 | Y5MIPTPCYE4MPHPU | Y5MIPTPCYE4MPHPU | PROCEED AS PLANNED | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "XMCKL"
} | expert | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
scytale-v2-0232 | GDRMOEDAIEEOMNEUPPNRNUSNSPHESENSCIRERNAIHRNORAULCAYGVDLMLALPTEIOBCTLTHDSREOIBEECK | GDRMOEDAIEEOMNEUPPNRNUSNSPHESENSCIRERNAIHRNORAULCAYGVDLMLALPTEIOBCTLTHDSREOIBEECK | GENERAL ORDERS NUMBER ONE ALL COMMUNICATIONS SHALL BE ENCRYPTED USING THE APPROVED CIPHER DISK | scytale | scytale | transposition | {
"type": "integer",
"value": 9
} | intermediate | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v2-0714 | FVQGDFXXKRQVRGVNNONLQWATUUGIOGBGVMKNDVIKFEQZYYWOGAUBFAOKQEJBAVONCNDANUKKGGYYJUBCKNA | FVQGDFXXKRQVRGVNNONLQWATUUGIOGBGVMKNDVIKFEQZYYWOGAUBFAOKQEJBAVONCNDANUKKGGYYJUBCKNA | KNOWLEDGE WITHOUT WISDOM IS A DANGEROUS THING AND WISDOM WITHOUT COURAGE IS ULTIMATELY WORTHLESS | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "VICKSBURG"
} | intermediate | en | 83 | 83 | cipher_museum | 2.0 | public | null | null |
cda-0014287 | 18.3.6 11.6.7 13.6.1 17.2.3 3.5.8 19.1.2 17.6.5 11.5.1 15.3.3 10.1.8 19.6.8 1.4.2 5.6.5 11.1.2 8.5.1 8.6.10 20.5.8 11.6.10 3.6.2 8.1.6 6.6.3 10.2.7 2.4.6 12.5.8 16.1.3 17.5.5 20.1.9 19.3.5 3.6.4 2.4.2 5.1.7 13.3.2 11.1.8 20.1.4 16.6.4 15.4.4 4.6.2 7.5.9 9.6.7 16.6.8 6.4.7 2.3.9 1.1.5 6.3.6 11.6.6 17.1.10 5.6.6 9.3.7 7.... | 18.3.6 11.6.7 13.6.1 17.2.3 3.5.8 19.1.2 17.6.5 11.5.1 15.3.3 10.1.8 19.6.8 1.4.2 5.6.5 11.1.2 8.5.1 8.6.10 20.5.8 11.6.10 3.6.2 8.1.6 6.6.3 10.2.7 2.4.6 12.5.8 16.1.3 17.5.5 20.1.9 19.3.5 3.6.4 2.4.2 5.1.7 13.3.2 11.1.8 20.1.4 16.6.4 15.4.4 4.6.2 7.5.9 9.6.7 16.6.8 6.4.7 2.3.9 1.1.5 6.3.6 11.6.6 17.1.10 5.6.6 9.3.7 7.... | DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF | arnold_andre | arnold_andre | null | {} | hard | en | 144 | 144 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
two-square-v2-0183 | THEFICROKPHELORDBQTHBCRCRIOHSMNRVKQONADKANSFXKEDHRNRTHLLQIDRPFBQZHAOBUTAQFRIHW | THEFICROKPHELORDBQTHBCRCRIOHSMNRVKQONADKANSFXKEDHRNRTHLLQIDRPFBQZHAOBUTAQFRIHW | THE FEAR OF THE LORD IS THE BEGINNING OF WISDOM AND KNOWLEDGE OF THE HOLY ONE IS UNDERSTANDING | two_square | two_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v2-0285 | WYYCZE UKTJEZF | WYYCZE UKTJEZF | ANNUIT COEPTIS | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "INDIA"
} | intermediate | en | 13 | 14 | cipher_museum | 2.0 | public | null | null |
voynich-render-v3-0056 | hdrkzx kx ird ndqydrg krxnkqogkir ore rkrdgu rkrd ndqydrg ndqxnkqogkir gcilox dekxir rigde | hdrkzx kx ird ndqydrg krxnkqogkir ore rkrdgu rkrd ndqydrg ndqxnkqogkir gcilox dekxir rigde | GENIUS IS ONE PERCENT INSPIRATION AND NINETY NINE PERCENT PERSPIRATION THOMAS EDISON NOTED | voynich_render | voynich_render | substitution | {
"type": "none",
"value": null
} | expert | en | 78 | 90 | cipher_museum | 2.0 | public | null | null |
cda-0006549 | PIEIMNCVIOOIRAAIDLNGTCERPYDRMDAHRABPEEEWRITEOBEEEEPHDNAHXXIRCSYTNCSNLBSTLOARRNDIEESECBOCORPEENXXKFAAEGENEEEEARTUDEVRCYIRRVCFFCRWTNUIX | PIEIMNCVIOOIRAAIDLNGTCERPYDRMDAHRABPEEEWRITEOBEEEEPHDNAHXXIRCSYTNCSNLBSTLOARRNDIEESECBOCORPEENXXKFAAEGENEEEEARTUDEVRCYIRRVCFFCRWTNUIX | PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING | stager_route | stager_route | null | {
"cols": 7
} | hard | en | 133 | 133 | synthetic_educational | null | null | [
"column_count_search",
"route_pattern_search"
] | Route (Stager) cipher: write into rectangle, read via alternating column route. |
cda-0012914 | BPBT TAFF GUCX ZUFD OQRY UAXQ FNRQ SVIJ CFFW AOXL UUNW TSJG QGZC EITJ CVVH XGGO ZYYR IKND PDRF JVVP YZHM CZT | BPBT TAFF GUCX ZUFD OQRY UAXQ FNRQ SVIJ CFFW AOXL UUNW TSJG QGZC EITJ CVVH XGGO ZYYR IKND PDRF JVVP YZHM CZT | ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN THE ARCHITECTURE SHOULD MAKE MISUSE HARDER | one_time_pad | one_time_pad | null | {} | hard | en | 87 | 87 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
adfgvx-v3-0379 | GXAGAFGFDFDAGFDGADAFVDGFAAGFAGAXAFDXDFAXAAVAFDFDDGFAXDAFFADDDDFFAVDXDDGVAAGVDFDFGXDDGVGVGADDAFGFDVGAGFAFGADGGDGDDAADAADXADFGGAVDFAVADAXAXAFFVDVDAG | GXAGAFGFDFDAGFDGADAFVDGFAAGFAGAXAFDXDFAXAAVAFDFDDGFAXDAFFADDDDFFAVDXDDGVAAGVDFDFGXDDGVGVGADDAFGFDVGAGFAFGADGGDGDDAADAADXADFGGAVDFAVADAXAXAFFVDVDAG | WATSON WE HAVE FOUND THE STRUCTURE OF DNA AND IT IS A DOUBLE HELIX OF BREATHTAKING BEAUTY | adfgvx | adfgvx | fractionation | {
"polybius": "DRAGON",
"columnar": "THUNDER"
} | advanced | en | 146 | 146 | cipher_museum | 2.0 | public | null | null |
red-type-a-v3-0405 | JUPUFNNVORYPGOHZJTECUJECCOLESUJGXTIVAVMZEFAGYWQUITUQEWYUHSXYVHXOEIVOYRWEGOBTEDVEIGWQYYTEXDYTTQENHAEJOWINYENAKVYZACVSGHRITANUGGPZOBYYZORYCEFIKYQQIIKWSKUGONFYESEXTISQYKEHD | JUPUFNNVORYPGOHZJTECUJECCOLESUJGXTIVAVMZEFAGYWQUITUQEWYUHSXYVHXOEIVOYRWEGOBTEDVEIGWQYYTEXDYTTQENHAEJOWINYENAKVYZACVSGHRITANUGGPZOBYYZORYCEFIKYQQIIKWSKUGONFYESEXTISQYKEHD | 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 | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "MIKADO"
} | advanced | en | 169 | 169 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v2-0278 | HOOM YLUQ MLWGOQ GQY | HOOM YLUQ MLWGOQ GQY | KEEP YOUR POWDER DRY | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "DRAGON"
} | beginner | en | 17 | 20 | cipher_museum | 2.0 | public | null | null |
trifid-v2-0282 | QNEIEJBJGMKCHGSCTGW | QNEIEJBJGMKCHGSCTGW | WISDOM GUARDS THE GATE | trifid | trifid | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
kl7-154 | TLDHJOJYSHHAUZVUHBVQUJMYDZVFJITKTUELYCV | TLDHJOJYSHHAUZVUHBVQUJMYDZVFJITKTUELYCV | IT WAS THE BEST OF TIMES IT WAS THE WORST OF TIMES | kl7 | kl7 | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 39 | 39 | cipher_museum | 0.2 | public | null | null |
sigaba-v3-0347 | BBISDAWMXHSAX | BBISDAWMXHSAX | THE APPLE FALLS | sigaba | sigaba | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
cda-0020790 | above shore track right other naval going carry lines above intel moved night extra extra daily seeks south takes roads other notes going extra verse | above shore track right other naval going carry lines above intel moved night extra extra daily seeks south takes roads other notes going extra verse | A STRONG CLAIM NEEDS STRONG EVIDENCE DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION | 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. |
confederate-vigenere-v2-0388 | TKWQKADPDLKCLIZAEOSPB | TKWQKADPDLKCLIZAEOSPB | BRIDGE DESTROYED AT DAWN | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "STONEWALL"
} | intermediate | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
kryha-v3-0311 | IJEDWEKYEKKGSAPWUWGBXYVZJKLPFDUFCGCFTRPRPQXCSZNBTNIYVDFGVBDGYSQRGXTHDLHIMPMKDUDAZTYPJJCZMRCQEKYGJGVGSNFBVRVEKSBIXUBRHZMKSBAXOBQLPXTMKCKOGITZQAVONXUYQTZBHYXOIHDJZPPVLFSCYWNOWCSLKTLLOH | IJEDWEKYEKKGSAPWUWGBXYVZJKLPFDUFCGCFTRPRPQXCSZNBTNIYVDFGVBDGYSQRGXTHDLHIMPMKDUDAZTYPJJCZMRCQEKYGJGVGSNFBVRVEKSBIXUBRHZMKSBAXOBQLPXTMKCKOGITZQAVONXUYQTZBHYXOIHDJZPPVLFSCYWNOWCSLKTLLOH | WILLIAM FRIEDMAN WHO BROKE THE JAPANESE PURPLE CIPHER MACHINE BEFORE THE SECOND WORLD WAR ALSO COINED THE TERM CRYPTANALYSIS AND SPENT HIS CAREER AT THE SIGNALS INTELLIGENCE SERVICE BUILDING AMERICAN CODEBREAKING | kryha | kryha | machine | {
"type": "keyword",
"value": "PRAGUE"
} | expert | en | 182 | 182 | cipher_museum | 2.0 | public | null | null |
adfgvx-v2-0503 | DFDFFXGGDAAFDFGFGXGFDFAVDFAADAAFAADAAXFFDXGDADDDDFAXAFGGDFAVAAGDAAAAAFADGGDAAAADAXFAGAAFAFAFAXGDGFDADDVGXAXDXAXAFAVAFAVDDDFGFDFAFGDGFDVAXGAAFDDAVADVDDDGDXGDVDDAAXDAAFAGFVADDXAGGVDXVFGDAFADDAAFAVGXAFFDAADFAFDFAGGDDVDXAFAGDVAXDDDXAFFVGAFXFXAVDDDFGGGGVAVGXAAAXAVDFAXFFAXGVDXGDGFDFGGFFAAAFAGDXFGGFAADDDVDFDXGAGXAXADGGGAFDAGA... | DFDFFXGGDAAFDFGFGXGFDFAVDFAADAAFAADAAXFFDXGDADDDDFAXAFGGDFAVAAGDAAAAAFADGGDAAAADAXFAGAAFAFAFAXGDGFDADDVGXAXDXAXAFAVAFAVDDDFGFDFAFGDGFDVAXGAAFDDAVADVDDDGDXGDVDDAAXDAAFAGFVADDXAGGVDXVFGDAFADDAAFAVGXAFFDAADFAFDFAGGDDVDXAFAGDVAXDDDXAFFVGAFXFXAVDDDFGGGGVAVGXAAAXAVDFAXFFAXGVDXGDGFDFGGFFAAAFAGDXFGGFAADDDVDFDXGAGXAXADGGGAFDAGA... | THE GREAT CIPHER OF LOUIS XIV INVENTED BY ANTOINE AND BONAVENTURE ROSSIGNOL USED A NOMENCLATOR OF OVER FIVE HUNDRED NUMBERS REPRESENTING SYLLABLES WORDS AND NULLS AND REMAINED UNBROKEN FOR TWO CENTURIES | adfgvx | adfgvx | fractionation | {
"polybius": "DRAGON",
"columnar": "THUNDER"
} | advanced | en | 344 | 344 | cipher_museum | 2.0 | public | null | null |
copiale-030 | N1 W2 V3 V3 K9 O6 R3 X8 W2 T3 A3 | N1 W2 V3 V3 K9 O6 R3 X8 W2 T3 A3 | RALLY AT DAWN | copiale | copiale | substitution | {
"type": "keyword",
"value": "COPIALE"
} | advanced | en | 22 | 32 | cipher_museum | 0.2 | public | null | null |
cda-0015763 | AAABB ABAAA AABAB AABAB ABAAA AABAA AAAAA ABBAA AAABB AABBB AABAA ABABA ABABA ABABB AAAAA ABBAA ABAAA ABBAA BAABA BAAAA ABBAB AAABB BAABB AAABA AABAA AAABB ABBBA BAABB AAAAB ABABA ABAAA AAABA ABAAB AABAA BABBA AAABA BAAAA BABBA ABBBA BAABA ABBAB AABBA BAAAA AAAAA ABBBA AABBB BABBA ABAAA ABBAA ABBAA ABAAA ABBAA AABAA BA... | AAABB ABAAA AABAB AABAB ABAAA AABAA AAAAA ABBAA AAABB AABBB AABAA ABABA ABABA ABABB AAAAA ABBAA ABAAA ABBAA BAABA BAAAA ABBAB AAABB BAABB AAABA AABAA AAABB ABBBA BAABB AAAAB ABABA ABAAA AAABA ABAAB AABAA BABBA AAABA BAAAA BABBA ABBBA BAABA ABBAB AABBA BAAAA AAAAA ABBBA AABBB BABBA ABAAA ABBAA ABBAA ABAAA ABBAA AABAA BA... | DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT | bacon_cipher | bacon_cipher | null | {} | hard | en | 605 | 605 | synthetic_educational | null | null | [
"five_bit_decode",
"ab_frequency_analysis"
] | Bacon's biliteral cipher: each letter encoded as 5-bit A/B string. |
adfgx-198 | GFGXFAAAGGDDFGDFDDDXDA | GFGXFAAAGGDDFGDFDDDXDA | RALLY AT DAWN | adfgx | adfgx | fractionation | {
"polybius": "ENIGMA",
"columnar": "CRYPTO"
} | advanced | en | 22 | 22 | cipher_museum | 0.2 | public | null | null |
running-key-v2-0033 | FBHLAVQSECWAW | FBHLAVQSECWAW | ANNUIT COEPTIS | running_key | running_key | polyalphabetic | {
"type": "text",
"value": "Gettysburg Address opening"
} | intermediate | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
vic-v2-0064 | 9189929091838691080218973839104229108386800804899148672804868619192869119108386801386928678089909148678386828386422349590 | 9189929091838691080218973839104229108386800804899148672804868619192869119108386801386928678089909148678386828386422349590 | TRUST IN THE LORD WITH ALL THINE HEART AND LEAN NOT UNTO THINE OWN UNDERSTANDING IN ALL WAYS | vic | vic | substitution | {
"type": "keyword",
"value": "HOLLOW"
} | advanced | en | 121 | 121 | cipher_museum | 2.0 | public | null | null |
cda-0017313 | SIVMTGBEFESHHJCVBIEESTDMVNGGNUDRFLPQGJGVGXIOEEKKRGIULXWITVYNSUOKSEGCOJEEXMYVHCKXGPTCTDUCTYYYEXKZYFFUEXHWLYJZWLJEZRIYIRJUWOARCEPVEMGTVSLBDUVXEVCOIFKKCTWGRIIACPZEFLXRELPOCEQONCILRDUVMYIMQVWWVVVUJ | SIVMTGBEFESHHJCVBIEESTDMVNGGNUDRFLPQGJGVGXIOEEKKRGIULXWITVYNSUOKSEGCOJEEXMYVHCKXGPTCTDUCTYYYEXKZYFFUEXHWLYJZWLJEZRIYIRJUWOARCEPVEMGTVSLBDUVXEVCOIFKKCTWGRIIACPZEFLXRELPOCEQONCILRDUVMYIMQVWWVVVUJ | DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH | running_key | running_key | null | {} | hard | en | 193 | 193 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
sigaba-v3-0124 | SFYFJUAEGTRA | SFYFJUAEGTRA | GOLD FROM LEAD | sigaba | sigaba | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
kryha-091 | OIYSOKPCFKJEGZNCDRMZDZTJCJXRASJKEPJXPTXLXKJQMKYXVTYUEYKQD | OIYSOKPCFKJEGZNCDRMZDZTJCJXRASJKEPJXPTXLXKJQMKYXVTYUEYKQD | WE HOLD THESE TRUTHS TO BE SELF EVIDENT THAT ALL MEN ARE CREATED EQUAL | kryha | kryha | machine | {
"type": "keyword",
"value": "CIPHER"
} | expert | en | 57 | 57 | cipher_museum | 0.2 | public | null | null |
m94-v2-0284 | PLHZEJHJCEQVZVBMUWZDTGPVCSTNBOLXZBGQWVDVWYALQMCZBIZIVQTZUHTLYWTBJYJIU | PLHZEJHJCEQVZVBMUWZDTGPVCSTNBOLXZBGQWVDVWYALQMCZBIZIVQTZUHTLYWTBJYJIU | IT IS BETTER TO REMAIN SILENT AND BE THOUGHT A FOOL THAN TO SPEAK AND REMOVE ALL DOUBT | m94 | m94 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 69 | 69 | cipher_museum | 2.0 | public | null | null |
cda-0018514 | THAN ZIEL INDZ EHWO LLAC HEEG AHMO ASIL INTK INTH ANZI EDZE HMOA SITH ANZI ENOD AIHG AHDZ EHDI BEHL INAK HANO DAIH DIBE HYAZ ZIEB ENAA STSO SIWO LLAC HEEK LIZZ IEDZ EHNA ASTS OSIT KIND IBEH NODA IHDI BEHD ZEHL INWO LLAC HEEG AHBE DZEH GAH | THAN ZIEL INDZ EHWO LLAC HEEG AHMO ASIL INTK INTH ANZI EDZE HMOA SITH ANZI ENOD AIHG AHDZ EHDI BEHL INAK HANO DAIH DIBE HYAZ ZIEB ENAA STSO SIWO LLAC HEEK LIZZ IEDZ EHNA ASTS OSIT KIND IBEH NODA IHDI BEHD ZEHL INWO LLAC HEEG AHBE DZEH GAH | THE ARCHITECTURE SHOULD MAKE MISUSE HARDER | navajo_code | navajo_code | null | {} | hard | en | 191 | 191 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
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