id stringlengths 7 52 | text stringlengths 6 2.11k | ciphertext stringlengths 6 2.11k | plaintext stringlengths 6 282 | label stringclasses 81
values | cipher stringclasses 81
values | cipher_family stringclasses 13
values | key unknown | difficulty stringclasses 7
values | language stringclasses 8
values | text_length int64 6 1.09k | length int64 6 1.28k | source stringclasses 2
values | dataset_version stringclasses 2
values | split stringclasses 1
value | attack_methods listlengths 0 3 ⌀ | educational_note stringclasses 32
values |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
cda-0015888 | r ┘· └ X· ┌ ─ ⌐ ┌· K ┌· ⌐ ─ X ┐· ┘· X Γ· K Γ· ┘· ─ ┌· L ⌐ Γ X r ┘· └ X· ┌ ─ X Γ· ─ ┐ L ⌒· ┘· ┌· Γ L ┌· ⌐ ─ ⌐ ⌐· ⌐· Γ· ─ L r Γ· ┐· r· L ┌· ⌐ ┐· ┐· └ Γ· L X ⌐ └ Γ· ─ L ⌐ ┌· ⌐· X· ─ r K Γ· ┘· ─ K ┘· L ⌐ r r· └ L K K L ┌· r └ ⌐ X X Γ· r ⌐ └ r Γ· ┐· r· L ┌· X K L ⌐ r r· ⌒ r· ⌒· ┌ ┘· Γ L ┌· ─ X L r X· ┌· Γ· K ⌒· ┌ ⌐ K K L ┌·... | r ┘· └ X· ┌ ─ ⌐ ┌· K ┌· ⌐ ─ X ┐· ┘· X Γ· K Γ· ┘· ─ ┌· L ⌐ Γ X r ┘· └ X· ┌ ─ X Γ· ─ ┐ L ⌒· ┘· ┌· Γ L ┌· ⌐ ─ ⌐ ⌐· ⌐· Γ· ─ L r Γ· ┐· r· L ┌· ⌐ ┐· ┐· └ Γ· L X ⌐ └ Γ· ─ L ⌐ ┌· ⌐· X· ─ r K Γ· ┘· ─ K ┘· L ⌐ r r· └ L K K L ┌· r └ ⌐ X X Γ· r ⌐ └ r Γ· ┐· r· L ┌· X K L ⌐ r r· ⌒ r· ⌒· ┌ ┘· Γ L ┌· ─ X L r X· ┌· Γ· K ⌒· ┌ ⌐ K K L ┌·... | COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS THE INDEX OF COINCIDENCE IS A USEFUL CLUE | pigpen | pigpen | null | {} | medium | en | 71 | 71 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
cda-0018052 | .. ... .... ..... ... .. . . ... ... .... .. . ..... . . . .... . . . .. ... . . ..... ... .... .... ..... .... .... ... ..... .... ..... .... .... .... ... .. ... ... .... .... ..... ... . . .... .... ... .. ... ... .... ..... .. . . ... . ... . .... .. . ..... . . .... ... ... ....... | .. ... .... ..... ... .. . . ... ... .... .. . ..... . . . .... . . . .. ... . . ..... ... .... .... ..... .... .... ... ..... .... ..... .... .... .... ... .. ... ... .... .... ..... ... . . .... .... ... .. ... ... .... ..... .. . . ... . ... . .... .. . ..... . . .... ... ... ....... | HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS EVERY SYSTEM NEEDS AN HONEST THREAT MODEL | tap_code | tap_code | null | {} | hard | en | 81 | 81 | 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. |
vic-v2-0194 | 069265910190891086858919018508581819083428568990693619010828918206590852858484402489838588478584768880844090690806930 | 069265910190891086858919018508581819083428568990693619010828918206590852858484402489838588478584768880844090690806930 | NAVAL UNITS IN POSITION OFF THE COAST AWAITING SIGNAL TO COMMENCE SHORE BOMBARDMENT AT DAWN | vic | vic | substitution | {
"type": "keyword",
"value": "NICKEL"
} | advanced | en | 117 | 117 | cipher_museum | 2.0 | public | null | null |
bifid-v3-0072 | FSSNBTCXUNABVRLFSSXTFSTBFALTPKPCPKMNHYUYZFFUWZKWEUXHYUUYVINZUKYHOXFKXCES | FSSNBTCXUNABVRLFSSXTFSTBFALTPKPCPKMNHYUYZFFUWZKWEUXHYUUYVINZUKYHOXFKXCES | DO UNTO OTHERS AS YOU WOULD HAVE THEM DO UNTO YOU THIS IS THE GOLDEN RULE OF ALL RELIGIONS | bifid | bifid | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v3-0241 | PYNXOIHRCROP | PYNXOIHRCROP | YANKEE DOODLE | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "ROME"
} | advanced | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
cda-0020537 | 805 853 862 859 812 999 817 842 852 807 814 999 866 842 851 832 855 999 843 841 835 872 999 868 822 813 839 999 859 823 814 999 832 812 874 999 854 846 801 806 813 999 824 855 999 856 838 802 833 833 999 854 813 806 862 853 825 858 873 999 807 835 801 826 836 855 999 856 821 843 862 834 811 999 803 813 999 858 812 856 ... | 805 853 862 859 812 999 817 842 852 807 814 999 866 842 851 832 855 999 843 841 835 872 999 868 822 813 839 999 859 823 814 999 832 812 874 999 854 846 801 806 813 999 824 855 999 856 838 802 833 833 999 854 813 806 862 853 825 858 873 999 807 835 801 826 836 855 999 856 821 843 862 834 811 999 803 813 999 858 812 856 ... | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY PERHAPS | culper_ring | culper_ring | null | {} | hard | en | 89 | 89 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
cda-0007855 | BOFR EINO YRRI VQRA PRPB ZRFO RSBE RPBA SVQR APR | BOFR EINO YRRI VQRA PRPB ZRFO RSBE RPBA SVQR APR | OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE | rot13 | rot13 | null | {
"shift": 13
} | medium | en | 39 | 39 | synthetic_educational | null | null | [] | |
cda-0013032 | Γ Γ· ⌐· ⌐· Γ· L ⌐ ─ Γ r· L └ └ ┌ ⌐ ─ Γ· ─ K ┌· ┘· Γ X· r L Γ ┐· X· ¬ └ Γ· r ┐ L ⌒· r ┌· ⌒· ┐· K ┘· ¬· ┌· ⌐ ┐· r· ⌒· Γ· ─ ─ Γ· ─ L K L L ─ X L K· L ─ K ⌒· X Γ· ⌣ ⌐ K ┌· ⌐ ─ X ┐· ⌐ ┌· L ─ K K ┘· ┘· └ X r· ┘· X· └ Γ X r· ┘· ⌒ Γ· K X ┌· L ⌐ X ┘· ─ Γ· ─ ¬· | Γ Γ· ⌐· ⌐· Γ· L ⌐ ─ Γ r· L └ └ ┌ ⌐ ─ Γ· ─ K ┌· ┘· Γ X· r L Γ ┐· X· ¬ └ Γ· r ┐ L ⌒· r ┌· ⌒· ┐· K ┘· ¬· ┌· ⌐ ┐· r· ⌒· Γ· ─ ─ Γ· ─ L K L L ─ X L K· L ─ K ⌒· X Γ· ⌣ ⌐ K ┌· ⌐ ─ X ┐· ⌐ ┌· L ─ K K ┘· ┘· └ X r· ┘· X· └ Γ X r· ┘· ⌒ Γ· K X ┌· L ⌐ X ┘· ─ Γ· ─ ¬· | DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX A TRANSPARENT TOOL SHOULD SHOW ITS REASONING | pigpen | pigpen | null | {} | medium | en | 37 | 37 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
cda-0006554 | HSNSRPEVLZEEXJCJTAMTUCHLQLDNATXYLEXWLFEEHOIGXL | HSNSRPEVLZEEXJCJTAMTUCHLQLDNATXYLEXWLFEEHOIGXL | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS | autokey | autokey | null | {
"primer": "SECURE"
} | medium | en | 46 | 46 | synthetic_educational | null | null | [
"running_key_analysis",
"index_of_coincidence"
] | Autokey: Vigenère where the plaintext extends the key — harder to Kasiski-attack. |
bifid-245 | SNQAETNTNQNCTILIWG | SNQAETNTNQNCTILIWG | THE BRIDGE IS SECURED | bifid | bifid | fractionation | {
"type": "keyword",
"value": "ENIGMA"
} | advanced | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
cardano-autokey-091 | YALVZOWALWWXKLNAZLHPFWWPQJZDLHRGMAHTTLWXQRNRVGTVETXHHUKUL | YALVZOWALWWXKLNAZLHPFWWPQJZDLHRGMAHTTLWXQRNRVGTVETXHHUKUL | WE HOLD THESE TRUTHS TO BE SELF EVIDENT THAT ALL MEN ARE CREATED EQUAL | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 57 | 57 | cipher_museum | 0.2 | public | null | null |
cda-0005791 | TTSR CAEE IHRI PEYN ITUC SHKC AOUU OETH HCAE LTPO LCCH AMST ETEO EEEL TSSN NIEE IDSP BONE LAEC OEYR EWNN YILC ECWC OTMP VTHY SETA LRHD CMSF OLTS SDOO AIRN RIHA HAOI ATSC SWEU ABOR YHPS ONBT TYXI UENE BNTC ESIT HRRT RRKW EAMN FFIH PX | TTSR CAEE IHRI PEYN ITUC SHKC AOUU OETH HCAE LTPO LCCH AMST ETEO EEEL TSSN NIEE IDSP BONE LAEC OEYR EWNN YILC ECWC OTMP VTHY SETA LRHD CMSF OLTS SDOO AIRN RIHA HAOI ATSC SWEU ABOR YHPS ONBT TYXI UENE BNTC ESIT HRRT RRKW EAMN FFIH PX | THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION | scytale | scytale | null | {
"cols": 6
} | hard | en | 186 | 186 | synthetic_educational | null | null | [
"column_count_search",
"anagram_recovery"
] | Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter. |
cda-0021663 | .... .... .. ... . ..... ... . .. .... . .. .... .. . . .... .. ..... .... ... ..... .... .. . ..... .... ... . ..... .... .. ..... . . ..... .... ... . ... ... ... ... .... ..... .. ... . . ..... . .... .. .. . ..... .. . ... .... .... .. .... .... .. ... . ..... . ... ... .... ... ... | .... .... .. ... . ..... ... . .. .... . .. .... .. . . .... .. ..... .... ... ..... .... .. . ..... .... ... . ..... .... .. ..... . . ..... .... ... . ... ... ... ... .... ..... .. ... . . ..... . .... .. .. . ..... .. . ... .... .... .. .... .... .. ... . ..... . ... ... .... ... ... | THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH TODAY | tap_code | tap_code | null | {} | hard | en | 92 | 92 | 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. |
adfgx-v3-0114 | AGAXAXFAFADXFDXGGGDFAXDGDFGAAGFDXGAAGDGD | AGAXAXFAFADXFDXGGGDFAXDGDFGAAGFDXGAAGDGD | THE ALCHEMIST SUCCEEDS | adfgx | adfgx | fractionation | {
"polybius": "LIBERTY",
"columnar": "FREEDOM"
} | advanced | en | 40 | 40 | cipher_museum | 2.0 | public | null | null |
slidex-v3-0020 | VIDKYCITNDNJ | VIDKYCITNDNJ | GOLD FROM LEAD | slidex | slidex | transposition | {
"type": "keyword",
"value": "BLETCHLEY"
} | advanced | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
four-square-v3-0365 | SBRSBBEPHBSBOLGLHLGSMBODHDLUOHRMRMKOSADFKFLQOHCKBMCKFHRNYQFUFTONPHIEHYRSIIALSY | SBRSBBEPHBSBOLGLHLGSMBODHDLUOHRMRMKOSADFKFLQOHCKBMCKFHRNYQFUFTONPHIEHYRSIIALSY | THE RIGHT OF THE PEOPLE TO KEEP AND BEAR ARMS SHALL NOT BE INFRINGED BY THE FEDERAL GOVERNMENT | four_square | four_square | polygraphic | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
one-time-pad-v3-0080 | TIGSSBKYAWYEPRZTWRLXXOKQFDUOKWIIYAICODNLHWUTGGMOEQSSIPPDVJXLANBGQQHDJYWLNVPBQ | TIGSSBKYAWYEPRZTWRLXXOKQFDUOKWIIYAICODNLHWUTGGMOEQSSIPPDVJXLANBGQQHDJYWLNVPBQ | THE POWERS NOT DELEGATED TO THE UNITED STATES BY THE CONSTITUTION ARE RESERVED TO THE STATES | one_time_pad | one_time_pad | stream | {
"type": "pad",
"value": "ABCDEFGH (repeating)"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
chinese-telegraph-v2-0092 | 1821 0918 1503 1255 0792 0538 1346 1346 0538 0918 0856 0538 0347 1821 0918 1503 0156 0472 0918 0918 1346 0285 1421 0918 0012 0156 0156 0285 1024 1421 0538 1421 0538 1346 1421 0918 0285 1748 1421 1255 0012 0156 1421 1421 0472 0285 0012 0408 0285 0856 1421 0347 1255 0918 0792 0074 0285 0472 0538 0856 0219 0285 0856 0285 ... | 1821 0918 1503 1255 0792 0538 1346 1346 0538 0918 0856 0538 0347 1821 0918 1503 0156 0472 0918 0918 1346 0285 1421 0918 0012 0156 0156 0285 1024 1421 0538 1421 0538 1346 1421 0918 0285 1748 1421 1255 0012 0156 1421 1421 0472 0285 0012 0408 0285 0856 1421 0347 1255 0918 0792 0074 0285 0472 0538 0856 0219 0285 0856 0285 ... | YOUR MISSION IF YOU CHOOSE TO ACCEPT IT IS TO EXTRACT THE AGENT FROM BEHIND ENEMY LINES TONIGHT | chinese_telegraph | chinese_telegraph | codebook | {
"type": "none",
"value": null
} | expert | en | 312 | 389 | cipher_museum | 2.0 | public | null | null |
cda-0020580 | 43 14 67 11 68 49 25 14 91 59 45 99 35 59 63 17 33 58 11 4 27 63 33 2 87 88 39 33 91 91 22 34 25 26 2 62 59 61 46 22 34 22 15 68 39 48 68 68 22 3 91 88 33 27 32 25 76 80 48 41 87 49 63 88 48 58 33 53 25 33 99 52 43 91 94 48 80 22 92 86 49 60 17 60 88 23 63 39 1 49 70 68 33 53 25 66 91 43 33 96 46 63 32 67 39 66 87 49 7... | 43 14 67 11 68 49 25 14 91 59 45 99 35 59 63 17 33 58 11 4 27 63 33 2 87 88 39 33 91 91 22 34 25 26 2 62 59 61 46 22 34 22 15 68 39 48 68 68 22 3 91 88 33 27 32 25 76 80 48 41 87 49 63 88 48 58 33 53 25 33 99 52 43 91 94 48 80 22 92 86 49 60 17 60 88 23 63 39 1 49 70 68 33 53 25 66 91 43 33 96 46 63 32 67 39 66 87 49 7... | SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN | homophonic | homophonic | null | {} | hard | en | 142 | 142 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
cda-0017676 | okain shal chol rcheol chedal chol okshy chor otol otaiin daiin ykcheol shor otaiin otaiin ypchol oror aiiin | okain shal chol rcheol chedal chol okshy chor otol otaiin daiin ykcheol shor otaiin otaiin ypchol oror aiiin | THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION | voynich_render | voynich_render | null | {} | hard | en | 91 | 91 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
monoalphabetic-260 | IRYPTOBREPCY RUJMS | IRYPTOBREPCY RUJMS | CRYPTOGRAPHY RULES | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "ENIGMA"
} | beginner | en | 17 | 18 | cipher_museum | 0.2 | public | null | null |
chaocipher-v2-0351 | TFKPTKPZIFPWVKBQSCOFCEIGIZOBCIIXLANTWIBRCORSFALYYDTDTYMEBEUZDOTCGYQBIQRCN | TFKPTKPZIFPWVKBQSCOFCEIGIZOBCIIXLANTWIBRCORSFALYYDTDTYMEBEUZDOTCGYQBIQRCN | ALEA IACTA EST ET CAESAR RUBICONE TRANSGRESSO BELLUM CIVILE INCIPIT PER TOTAM ROMANAM | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
wheatstone-v2-0084 | CIJVDRGPRVYQHJSQVYOGJFYOTGTIPRNJSOQHYIPTIGVYOGJFVYQHJSQLJSNTPRYOSDQYFTQRDXVJNQHDROO | CIJVDRGPRVYQHJSQVYOGJFYOTGTIPRNJSOQHYIPTIGVYOGJFVYQHJSQLJSNTPRYOSDQYFTQRDXVJNQHDROO | KNOWLEDGE WITHOUT WISDOM IS A DANGEROUS THING AND WISDOM WITHOUT COURAGE IS ULTIMATELY WORTHLESS | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "TELEGRAPHY"
} | advanced | en | 83 | 83 | cipher_museum | 2.0 | public | null | null |
great-cipher-v3-0162 | 173 177 162 179 100 180 117 175 167 163 132 177 149 151 182 160 119 101 117 152 117 140 115 114 171 112 149 117 173 166 132 114 135 128 140 180 163 114 152 179 119 114 124 170 175 150 136 114 118 149 157 177 175 163 136 154 168 136 173 | 173 177 162 179 100 180 117 175 167 163 132 177 149 151 182 160 119 101 117 152 117 140 115 114 171 112 149 117 173 166 132 114 135 128 140 180 163 114 152 179 119 114 124 170 175 150 136 114 118 149 157 177 175 163 136 154 168 136 173 | THE LIGHT YOU SEE FROM DISTANT STARS LEFT THOSE SUNS THOUSANDS OF YEARS BEFORE YOUR BIRTH | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "ROSSIGNOL"
} | expert | en | 177 | 235 | cipher_museum | 2.0 | public | null | null |
cda-0011091 | TSWESCLNFITRSMRHSHTOEODIGREEPSEOEHPTWECRIQXLXBNROEOINAAGUPEXESEDNONTTPREOCXSSTFSLDVIHANSIXTHHAOSEEOAPCEPXLOEIUAPRNNHISHXEWMLRLEIDDFEIEX | TSWESCLNFITRSMRHSHTOEODIGREEPSEOEHPTWECRIQXLXBNROEOINAAGUPEXESEDNONTTPREOCXSSTFSLDVIHANSIXTHHAOSEEOAPCEPXLOEIUAPRNNHISHXEWMLRLEIDDFEIEX | THE BEST LESSONS SHOW WHERE THE METHOD FAILS OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS | scytale | scytale | null | {
"cols": 9
} | hard | en | 135 | 135 | synthetic_educational | null | null | [] | |
cda-0006625 | RRMK ETGE TEED OSCR YBON NBAG TYUN EXRE SROP ONTN AARI TTIC VUID FTCU EAUE DATN AMRE FPYE RNEE NICE GAOM LDSE DUIO LCIT DNDI OAID AODR IXDS NTTE NIEC IELI EEGD IYTX PIDP SRTL IXRS ALIO PPEU YREN EYHS EICS UICH PTEC LLNU ETRL ICRO HHSH AIBS SRTM NL | RRMK ETGE TEED OSCR YBON NBAG TYUN EXRE SROP ONTN AARI TTIC VUID FTCU EAUE DATN AMRE FPYE RNEE NICE GAOM LDSE DUIO LCIT DNDI OAID AODR IXDS NTTE NIEC IELI EEGD IYTX PIDP SRTL IXRS ALIO PPEU YREN EYHS EICS UICH PTEC LLNU ETRL ICRO HHSH AIBS SRTM NL | ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY | double_transposition | double_transposition | null | {
"key1": "CIPHER",
"key2": "DRAGON"
} | hard | en | 198 | 198 | synthetic_educational | null | null | [
"key_length_search",
"anagram_recovery"
] | Double columnar transposition: apply columnar twice for stronger security. |
alberti-disk-v2-0340 | FQEBGTZIFOOMMABNWISXKTDDPJBZQEOZKXIQRQMNLTLFEOFMMLTGNOGNMKJYZFRSBZAGIIYZQUMHHYX | FQEBGTZIFOOMMABNWISXKTDDPJBZQEOZKXIQRQMNLTLFEOFMMLTGNOGNMKJYZFRSBZAGIIYZQUMHHYX | CLAUDE SHANNON PROVED THAT THE ONE TIME PAD ACHIEVES PERFECT SECRECY WHEN USED CORRECTLY ONCE | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 8
} | expert | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-150 | VUAFZOJLXRYZITHFIQQZVFIVXTLJIVYZMPKYCUCAAHEURMIH | VUAFZOJLXRYZITHFIQQZVFIVXTLJIVYZMPKYCUCAAHEURMIH | WE SHALL FIGHT ON THE BEACHES AND WE SHALL NEVER SURRENDER | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "5,3,6,1,4,2"
} | expert | en | 48 | 48 | cipher_museum | 0.2 | public | null | null |
null-cipher-v2-0049 | that each have through utna other nsrb too year aeii has iouc will little tnsa number | that each have through utna other nsrb too year aeii has iouc will little tnsa number | THE HARBOR IS CLEAR | null_cipher | null_cipher | steganography | {
"type": "position",
"value": "last"
} | advanced | en | 70 | 85 | cipher_museum | 2.0 | public | null | null |
sigaba-198 | QXOFSTWEGYFDTUMA | QXOFSTWEGYFDTUMA | BURN AFTER READING | sigaba | sigaba | machine | {
"type": "seed",
"value": "MUSEUM"
} | expert | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
affine-es-047 | RNDQYX NQD ENFSGD ZF RHFSSD XGSD ZF DKSF | RNDQYX NQD ENFSGD ZF RHFSSD XGSD ZF DKSF | CUANDO UNA PUERTA SE CIERRA OTRA SE ABRE | affine | affine | substitution | {
"type": "keyword",
"value": "7,3"
} | beginner | es | 33 | 40 | cipher_museum | 0.2 | public | null | null |
venona-pad-reuse-v2-0327 | WWAVHIEJVJXRJMO2EHWOBHVEXGG5XCPMFJ7XFLLN77BSF4D77N2PASWCICDAHO6WVVJGFMI3XKAOU | WWAVHIEJVJXRJMO2EHWOBHVEXGG5XCPMFJ7XFLLN77BSF4D77N2PASWCICDAHO6WVVJGFMI3XKAOU | THE REGIMENT SHALL ADVANCE AT FIRST LIGHT SUPPORTED BY ARTILLERY ON THE EASTERN FLANK TODAY | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "FREEDOM"
} | expert | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
cda-0003459 | SERDH RAPLN ANYLF VFPNA ERIRN YJRNX PVCUR EFCRR EERIV RJNAQ ERCEB QHPVO VYVGL ZNGGR EVAER FRNEP UREEB EPBEE RPGVB ANAQQ RGRPG VBANE RSHAQ NZRAG NYGBF RPHER FLFGR ZF | SERDH RAPLN ANYLF VFPNA ERIRN YJRNX PVCUR EFCRR EERIV RJNAQ ERCEB QHPVO VYVGL ZNGGR EVAER FRNEP UREEB EPBEE RPGVB ANAQQ RGRPG VBANE RSHAQ NZRAG NYGBF RPHER FLFGR ZF | FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 137 | 137 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
cda-0019352 | 11 31 11 33 44 45 42 24 33 22 12 42 34 25 15 15 33 24 22 32 11 52 24 44 23 13 42 24 12 43 11 33 14 44 23 15 12 34 32 12 15 32 11 13 23 24 33 15 14 24 22 42 11 35 23 11 33 14 44 42 24 22 42 11 35 23 21 42 15 41 45 15 33 13 24 15 43 15 53 35 34 43 15 43 24 32 35 31 15 13 24 35 23 15 42 43 | 11 31 11 33 44 45 42 24 33 22 12 42 34 25 15 15 33 24 22 32 11 52 24 44 23 13 42 24 12 43 11 33 14 44 23 15 12 34 32 12 15 32 11 13 23 24 33 15 14 24 22 42 11 35 23 11 33 14 44 42 24 22 42 11 35 23 21 42 15 41 45 15 33 13 24 15 43 15 53 35 34 43 15 43 24 32 35 31 15 13 24 35 23 15 42 43 | ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS | polybius | polybius | null | {} | hard | en | 96 | 96 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
joseon-yeokhak-v2-0189 | TCFUCRGCZCJSRHVSKCFZRHVOHVSUOJSVWGCBZMGCBHVOHKVCSJSFPSZWSJSGGVOZZBCHDSFWGV | TCFUCRGCZCJSRHVSKCFZRHVOHVSUOJSVWGCBZMGCBHVOHKVCSJSFPSZWSJSGGVOZZBCHDSFWGV | FOR GOD SO LOVED THE WORLD THAT HE GAVE HIS ONLY SON THAT WHOEVER BELIEVES SHALL NOT PERISH | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "JOSEON"
} | beginner | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
atbash-v3-0040 | VFIVPZ | VFIVPZ | EUREKA | atbash | atbash | substitution | {
"type": "none",
"value": null
} | beginner | en | 6 | 6 | cipher_museum | 2.0 | public | null | null |
geheimschreiber-113 | HLKFSPFQJTJEJDUJKBJOGHIXGKQNZLTHWJGNLVFBEEETWTMUDRFZPGOQXJRB | HLKFSPFQJTJEJDUJKBJOGHIXGKQNZLTHWJGNLVFBEEETWTMUDRFZPGOQXJRB | LET JUSTICE BE DONE THOUGH THE HEAVENS FALL AND THE STARS GO DARK FOREVER | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 60 | 60 | cipher_museum | 0.2 | public | null | null |
great-cipher-v3-0150 | 173 177 149 179 143 169 165 136 167 175 151 115 114 | 173 177 149 179 143 169 165 136 167 175 151 115 114 | THE FACTORY ROARS | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "ROSSIGNOL"
} | expert | en | 39 | 51 | cipher_museum | 2.0 | public | null | null |
argenti-v3-0031 | 44 32 51 75 65 87 25 66 62 22 82 14 59 57 44 75 88 45 80 53 22 | 44 32 51 75 65 87 25 66 62 22 82 14 59 57 44 75 88 45 80 53 22 | SONS OF LIBERTY ASSEMBLE | argenti | argenti | nomenclator | {
"type": "seed",
"value": "ROME"
} | expert | en | 42 | 62 | cipher_museum | 2.0 | public | null | null |
stager-route-v2-0480 | LRMFENPTAVIOAIBTRNOIXXSLITEERRCSUEXXDTSENTGISEIEXXMONMTALOOTNIXXLFLTUITLSARSXXEARDAF | LRMFENPTAVIOAIBTRNOIXXSLITEERRCSUEXXDTSENTGISEIEXXMONMTALOOTNIXXLFLTUITLSARSXXEARDAF | LIBERTÉ ÉGALITÉ FRATERNITÉ OU LA MORT CES MOTS DÉFINISSENT LA REVOLUTION FRANÇAISE DE MIL SEPT | stager_route | stager_route | transposition | {
"type": "integer",
"value": 12
} | expert | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
kl7-v2-0390 | ZXILOUZHWGWDARYEXMK | ZXILOUZHWGWDARYEXMK | MISSION ACCOMPLISHED | kl7 | kl7 | machine | {
"type": "seed",
"value": "ALLIANCE"
} | expert | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
typex-v3-0055 | GSOXWFHPQMRNREWXGGCSDMCLUYAWXLXJYNZXAUUDJVBVTKEXUJAITAXAHFFREQMAPJYYUHSCDMGUEL | GSOXWFHPQMRNREWXGGCSDMCLUYAWXLXJYNZXAUUDJVBVTKEXUJAITAXAHFFREQMAPJYYUHSCDMGUEL | SCIENCE WITHOUT RELIGION IS LAME AND RELIGION WITHOUT SCIENCE IS BLIND SAID ALBERT EINSTEIN | typex | typex | machine | {
"type": "keyword",
"value": "LONDON"
} | expert | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
cda-0015069 | . . ... .. ... .... . .... . ..... ... . . ... . . ... ... . ... ... . . . .... ... .... ... .. .... .. . ..... .... ... ..... . . .... .... .... .... . ..... .... .. ... ... .... ... . .. .... ..... .... .... .. .... .... .... . ... . . ... ... . . ... . .... ... ... .... . .. . .... | . . ... .. ... .... . .... . ..... ... . . ... . . ... ... . ... ... . . . .... ... .... ... .. .... .. . ..... .... ... ..... . . .... .... .... .... . ..... .... .. ... ... .... ... . .. .... ..... .... .... .. .... .... .... . ... . . ... ... . . ... . .... ... ... .... . .. . .... | A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION | tap_code | tap_code | null | {} | hard | en | 146 | 146 | 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. |
cda-0016964 | 12.6.9 4.3.9 11.4.3 4.5.10 7.4.10 14.3.8 1.2.9 2.1.5 2.1.7 8.4.5 11.1.4 6.2.2 7.2.9 11.3.4 5.4.4 1.1.9 1.2.1 14.5.7 2.1.6 20.2.8 7.2.9 18.6.10 17.5.3 1.2.9 18.6.3 7.4.1 16.4.1 16.3.10 4.2.3 16.1.4 15.5.1 3.4.6 13.3.1 6.6.1 5.5.4 4.1.2 9.5.1 9.1.4 6.1.8 1.1.3 14.1.10 18.6.3 3.3.8 20.6.8 20.6.8 20.2.8 3.5.9 3.3.10 8.2.1 ... | 12.6.9 4.3.9 11.4.3 4.5.10 7.4.10 14.3.8 1.2.9 2.1.5 2.1.7 8.4.5 11.1.4 6.2.2 7.2.9 11.3.4 5.4.4 1.1.9 1.2.1 14.5.7 2.1.6 20.2.8 7.2.9 18.6.10 17.5.3 1.2.9 18.6.3 7.4.1 16.4.1 16.3.10 4.2.3 16.1.4 15.5.1 3.4.6 13.3.1 6.6.1 5.5.4 4.1.2 9.5.1 9.1.4 6.1.8 1.1.3 14.1.10 18.6.3 3.3.8 20.6.8 20.6.8 20.2.8 3.5.9 3.3.10 8.2.1 ... | THE INDEX OF COINCIDENCE IS A USEFUL CLUE POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS | arnold_andre | arnold_andre | null | {} | hard | en | 80 | 80 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
joseon-yeokhak-022 | MIMUFRGDFTQDADPQDE | MIMUFRGDFTQDADPQDE | AWAIT FURTHER ORDERS | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "YEOKHAK"
} | beginner | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
babington-v2-0024 | ⟨a13⟩ ⟨w21⟩ ⟨w29⟩ ⟨w04⟩ ⟨w34⟩ ⟨a12⟩ ⟨w04⟩ ⟨w25⟩ ⟨a11⟩ ⟨w21⟩ ⟨a13⟩ ⟨a10⟩ ⟨a14⟩ ⟨w16⟩ ⟨w04⟩ ⟨w06⟩ ⟨w25⟩ ⟨a11⟩ ⟨w25⟩ ⟨w04⟩ ⟨w34⟩ ⟨w24⟩ ⟨a13⟩ ⟨w21⟩ ⟨w16⟩ ⟨w04⟩ ⟨a13⟩ ⟨a11⟩ ⟨w23⟩ ⟨a07⟩ ⟨w29⟩ ⟨w22⟩ ⟨w23⟩ ⟨w21⟩ ⟨w35⟩ ⟨w21⟩ ⟨w34⟩ ⟨w25⟩ ⟨n01⟩ ⟨w20⟩ ⟨w31⟩ ⟨a11⟩ ⟨w26⟩ ⟨w17⟩ ⟨a07⟩ ⟨w08⟩ ⟨a12⟩ ⟨w32⟩ ⟨a07⟩ ⟨w26⟩ ⟨a02⟩ ⟨w08⟩ ⟨a12⟩ ⟨w... | ⟨a13⟩ ⟨w21⟩ ⟨w29⟩ ⟨w04⟩ ⟨w34⟩ ⟨a12⟩ ⟨w04⟩ ⟨w25⟩ ⟨a11⟩ ⟨w21⟩ ⟨a13⟩ ⟨a10⟩ ⟨a14⟩ ⟨w16⟩ ⟨w04⟩ ⟨w06⟩ ⟨w25⟩ ⟨a11⟩ ⟨w25⟩ ⟨w04⟩ ⟨w34⟩ ⟨w24⟩ ⟨a13⟩ ⟨w21⟩ ⟨w16⟩ ⟨w04⟩ ⟨a13⟩ ⟨a11⟩ ⟨w23⟩ ⟨a07⟩ ⟨w29⟩ ⟨w22⟩ ⟨w23⟩ ⟨w21⟩ ⟨w35⟩ ⟨w21⟩ ⟨w34⟩ ⟨w25⟩ ⟨n01⟩ ⟨w20⟩ ⟨w31⟩ ⟨a11⟩ ⟨w26⟩ ⟨w17⟩ ⟨a07⟩ ⟨w08⟩ ⟨a12⟩ ⟨w32⟩ ⟨a07⟩ ⟨w26⟩ ⟨a02⟩ ⟨w08⟩ ⟨a12⟩ ⟨w... | RECONNOITER THE ENEMY POSITION AND REPORT BACK BEFORE NIGHTFALL WITH A FULL STRENGTH COUNT | babington | babington | nomenclator | {
"type": "seed",
"value": "ELIZABETH"
} | expert | en | 340 | 407 | cipher_museum | 2.0 | public | null | null |
hill-v3-0408 | UNXKQOZEGFLNKKRXUBZHGLDTTNHAGSFBRNCQPLDMKCRCCYGWVHPFVXKQGWRWANPDKKURSQTSTBIHHJYZQTADKCLNZRKKVXANURXXZEWWXZRBVBFJARSJMRWWXZRBCQPSKBDMUOKQBZYLGPRVRBNIILOMXXBVPDRCUGSNAH | UNXKQOZEGFLNKKRXUBZHGLDTTNHAGSFBRNCQPLDMKCRCCYGWVHPFVXKQGWRWANPDKKURSQTSTBIHHJYZQTADKCLNZRKKVXANURXXZEWWXZRBVBFJARSJMRWWXZRBCQPSKBDMUOKQBZYLGPRVRBNIILOMXXBVPDRCUGSNAH | 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 | hill | hill | polygraphic | {
"a": 9,
"b": 2,
"c": 7,
"d": 5
} | advanced | en | 166 | 166 | cipher_museum | 2.0 | public | null | null |
double-transposition-v2-0261 | CORAATBLHERIREHS | CORAATBLHERIREHS | THE HARBOR IS CLEAR | double_transposition | double_transposition | transposition | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
argenti-064 | 87 19 46 88 30 81 29 69 72 76 11 31 55 89 62 66 68 42 70 24 | 87 19 46 88 30 81 29 69 72 76 11 31 55 89 62 66 68 42 70 24 | RENDEZVOUS AT MIDNIGHT | argenti | argenti | nomenclator | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 40 | 59 | cipher_museum | 0.2 | public | null | null |
confederate-vigenere-v2-0534 | YINDZDEWAMDDKFGGVTP | YINDZDEWAMDDKFGGVTP | WISDOM GUARDS THE GATE | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "CAVALRY"
} | intermediate | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
four-square-v2-0290 | CDGKXHGQXAUNUKNRSSGQCSOODUYQMERCQRINBGNHRFPYRMTMHTRRQYEQBAZIKUMTUNAX | CDGKXHGQXAUNUKNRSSGQCSOODUYQMERCQRINBGNHRFPYRMTMHTRRQYEQBAZIKUMTUNAX | I KNOW NOT WHAT COURSE OTHERS MAY TAKE BUT AS FOR ME GIVE ME LIBERTY OR GIVE ME DEATH | four_square | four_square | polygraphic | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
chinese-telegraph-056 | 1672 0285 1421 0472 0285 1024 0285 0918 1024 0729 0285 0918 0347 1421 0472 0285 1503 0856 0538 1421 0285 0219 1346 1421 0012 1421 0285 1346 0538 0856 0918 1255 0219 0285 1255 1421 0918 0347 0918 1255 0792 0012 0792 0918 1255 0285 1024 0285 1255 0347 0285 0156 1421 1503 0856 0538 0918 0856 0285 1346 1421 0012 0074 0729 ... | 1672 0285 1421 0472 0285 1024 0285 0918 1024 0729 0285 0918 0347 1421 0472 0285 1503 0856 0538 1421 0285 0219 1346 1421 0012 1421 0285 1346 0538 0856 0918 1255 0219 0285 1255 1421 0918 0347 0918 1255 0792 0012 0792 0918 1255 0285 1024 0285 1255 0347 0285 0156 1421 1503 0856 0538 0918 0856 0285 1346 1421 0012 0074 0729 ... | 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 | chinese_telegraph | chinese_telegraph | codebook | {
"type": "none",
"value": null
} | expert | en | 596 | 744 | cipher_museum | 0.2 | public | null | null |
solitaire-v2-0091 | LBKKVUOWPBZQPPBZXFIQBNVYJQENKDLGIZQULLTUPURSFYDGQNARGJXLMYXRIQHDOXSKMTCEOSXSITVW | LBKKVUOWPBZQPPBZXFIQBNVYJQENKDLGIZQULLTUPURSFYDGQNARGJXLMYXRIQHDOXSKMTCEOSXSITVW | THE SECRET LIES BURIED BENEATH THE THIRD FLAGSTONE OF THE OLD CHURCH COURTYARD AT DAWN TOMORROW | solitaire | solitaire | stream | {
"type": "none",
"value": null
} | expert | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
cda-0005824 | FBKOG QUZMM SDMCC HJLJX HJPXQ KOHCQ HNMYI YRLZQ HGYXJ TJCBO CPUFP FMJYL FYYDQ FWBFC WVCKD BPRDP WEPJZ YIWCA AFWIY FFTJK HFCRC PNXQS GYMWM CKCHX EELPC XAQUN SRWDV JIPXQ OCQAQ GOGLL XDCOY OHTYL XMZDW YYWKO WJIRD IBVXB RR | FBKOG QUZMM SDMCC HJLJX HJPXQ KOHCQ HNMYI YRLZQ HGYXJ TJCBO CPUFP FMJYL FYYDQ FWBFC WVCKD BPRDP WEPJZ YIWCA AFWIY FFTJK HFCRC PNXQS GYMWM CKCHX EELPC XAQUN SRWDV JIPXQ OCQAQ GOGLL XDCOY OHTYL XMZDW YYWKO WJIRD IBVXB RR | FAIL CLOSED IS A POSTURE NOT A SLOGAN DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS | trithemius | trithemius | null | {} | hard | en | 182 | 182 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
vigenere-v3-1028 | FBWGQPXQYUHCTWNIXACOEWYNXVVWRNTXKQQNMFXKGWBUJRNQVXHWIMQTUYLHLKWBIDOMVLNJGEQVMLUDUIPHBQZBKJLJPWVWPRNWLXLVLNGOBBJEWILAMTXQYQLPQYUXVXKNEAYLAMEEDMWLEJMLBAFXGPCBWLMREAULBWP | FBWGQPXQYUHCTWNIXACOEWYNXVVWRNTXKQQNMFXKGWBUJRNQVXHWIMQTUYLHLKWBIDOMVLNJGEQVMLUDUIPHBQZBKJLJPWVWPRNWLXLVLNGOBBJEWILAMTXQYQLPQYUXVXKNEAYLAMEEDMWLEJMLBAFXGPCBWLMREAULBWP | WHEN IN THE COURSE OF HUMAN EVENTS IT BECOMES NECESSARY FOR ONE PEOPLE TO DISSOLVE THE POLITICAL BANDS WHICH HAVE CONNECTED THEM WITH ANOTHER THEY SHOULD DECLARE THE CAUSES WHICH IMPEL THE SEPARATION | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 167 | 167 | cipher_museum | 2.0 | public | null | null |
cda-0016525 | THANZ IELIN DZEHB EDZEH THANZ IEDZE HMOAS ITHAN ZIETK INAKE HDIGL INIDZ EHDIB EHTHA NZIEN ODAIH BETKI NDZEH DIBEH CLAGI AIHWO LLACH EETHA NZIET HANZI EDZEH GAHTS AHDIB EHSHU SHDZE HMAEA KHAGA HDZEH NAAST SOSIW OLLAC HEEKL IZZIE TKINT SAHAH JAHMO ASI | THANZ IELIN DZEHB EDZEH THANZ IEDZE HMOAS ITHAN ZIETK INAKE HDIGL INIDZ EHDIB EHTHA NZIEN ODAIH BETKI NDZEH DIBEH CLAGI AIHWO LLACH EETHA NZIET HANZI EDZEH GAHTS AHDIB EHSHU SHDZE HMAEA KHAGA HDZEH NAAST SOSIW OLLAC HEEKL IZZIE TKINT SAHAH JAHMO ASI | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS A TRANSPARENT TOOL SHOULD SHOW ITS REASONING TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION | navajo_code | navajo_code | null | {} | hard | en | 208 | 208 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
playfair-v2-0620 | EVHNAYDIOCTC | EVHNAYDIOCTC | IN GOD WE TRUST | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-v2-0142 | 213732382976823682396 | 213732382976823682396 | COVER MY RETREAT | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "LIONSTRACE"
} | advanced | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
m209-v2-0439 | CLTEUELHPKCDQARAQMHOKKZQJPKLFQPLIUEMIPIMDRJPKMDBDRAOZOMGOLLPADGEQZERKDHK | CLTEUELHPKCDQARAQMHOKKZQJPKLFQPLIUEMIPIMDRJPKMDBDRAOZOMGOLLPADGEQZERKDHK | ASK WHAT YOU CAN DO FOR YOUR COUNTRY NOT WHAT YOUR COUNTRY CAN DO FOR YOU TODAY AND ALWAYS | m209 | m209 | machine | {
"type": "seed",
"value": "VICTORY"
} | expert | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
hill-v3-0163 | OXXXNICXPJHQPKPZMYYZDNIYYVZVOSDWBQWGOXJFSUQENNKEBQSTEOJOXKPJOSBEIQOXVNDWBD | OXXXNICXPJHQPKPZMYYZDNIYYVZVOSDWBQWGOXJFSUQENNKEBQSTEOJOXKPJOSBEIQOXVNDWBD | THE THIN RED LINE STOOD FIRM AT BALACLAVA AS THE RUSSIAN CAVALRY CHARGED ACROSS THE PLAIN | hill | hill | polygraphic | {
"a": 5,
"b": 7,
"c": 2,
"d": 9
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
chaocipher-v2-0138 | BJTRFKXJJHEQTEEPHDL | BJTRFKXJJHEQTEEPHDL | MISSION ACCOMPLISHED | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
cda-0018280 | INDEX OFCOI NCIDX NCEMZ ASURX SLETZ ERFRX QUENZ YDISZ RIBUT IONTH EENIZ MAMAZ HINEZ SEDRZ TORSX OCREA TEAPX LYALP HABET ICCIZ HERBE | INDEX OFCOI NCIDX NCEMZ ASURX SLETZ ERFRX QUENZ YDISZ RIBUT IONTH EENIZ MAMAZ HINEZ SEDRZ TORSX OCREA TEAPX LYALP HABET ICCIZ HERBE | INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER | commercial_code | commercial_code | null | {} | hard | en | 110 | 110 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
vic-v2-0384 | 68686918390804287908389 | 68686918390804287908389 | ANNUIT COEPTIS | vic | vic | substitution | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 23 | 23 | cipher_museum | 2.0 | public | null | null |
diana-v3-0141 | ZIAJEPHANQNEJHXLERQ | ZIAJEPHANQNEJHXLERQ | THE TELESCOPE REVEALS | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "SPECIAL"
} | intermediate | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
cda-0020052 | 17.3.8 6.6.2 6.2.2 11.1.8 9.5.8 1.2.6 3.4.8 2.1.10 8.5.3 18.6.1 19.5.6 8.6.8 5.3.9 13.5.4 10.3.2 14.2.4 1.2.6 20.4.7 9.4.4 15.1.9 10.6.8 7.3.2 14.3.9 19.6.4 3.1.2 7.6.2 16.1.3 20.5.2 19.2.3 5.4.3 13.2.8 1.3.2 18.3.3 6.2.5 12.5.6 12.3.8 7.2.2 14.1.5 17.2.9 7.6.10 | 17.3.8 6.6.2 6.2.2 11.1.8 9.5.8 1.2.6 3.4.8 2.1.10 8.5.3 18.6.1 19.5.6 8.6.8 5.3.9 13.5.4 10.3.2 14.2.4 1.2.6 20.4.7 9.4.4 15.1.9 10.6.8 7.3.2 14.3.9 19.6.4 3.1.2 7.6.2 16.1.3 20.5.2 19.2.3 5.4.3 13.2.8 1.3.2 18.3.3 6.2.5 12.5.6 12.3.8 7.2.2 14.1.5 17.2.9 7.6.10 | CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS | arnold_andre | arnold_andre | null | {} | medium | en | 40 | 40 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
m209-v2-0504 | GZKTXPAROTAPYKYBKQXJAYJLDJZKVQPNBXNMSYOMTFROMZMZMZZALIQWOSALKDDTVKXTMLMUZZVQMLLXZNSBMLXCKLDROLWQUJFNLPJVCAXQLMYABPRROOAZBYPLAONQTOKZLVAWAQYNERGASBDMYDQALBDKKYIWAEVYKJXOZKSXTVCYNLG | GZKTXPAROTAPYKYBKQXJAYJLDJZKVQPNBXNMSYOMTFROMZMZMZZALIQWOSALKDDTVKXTMLMUZZVQMLLXZNSBMLXCKLDROLWQUJFNLPJVCAXQLMYABPRROOAZBYPLAONQTOKZLVAWAQYNERGASBDMYDQALBDKKYIWAEVYKJXOZKSXTVCYNLG | 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 | m209 | m209 | machine | {
"type": "seed",
"value": "VICTORY"
} | expert | en | 179 | 179 | cipher_museum | 2.0 | public | null | null |
wheatstone-v2-0324 | ESEQRASSAPSLPAJBEKQEHAKSBKTRASDLUCDSBNLLHSDBKSLQMABGBKTPAJLVABHHTLURS | ESEQRASSAPSLPAJBEKQEHAKSBKTRASDLUCDSBNLLHSDBKSLQMABGBKTPAJLVABHHTLURS | IT IS BETTER TO REMAIN SILENT AND BE THOUGHT A FOOL THAN TO SPEAK AND REMOVE ALL DOUBT | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "BRITAIN"
} | advanced | en | 69 | 69 | cipher_museum | 2.0 | public | null | null |
cardano-autokey-v2-0419 | VLWEAHTZRTBMXVJAAFBHZUZORTYXRUHVZCMIBLERUWAHTMHZO | VLWEAHTZRTBMXVJAAFBHZUZORTYXRUHVZCMIBLERUWAHTMHZO | ALL THAT GLITTERS IS NOT GOLD OFTEN HAVE YOU HEARD THAT TOLD | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "VENICE"
} | advanced | en | 49 | 49 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-vf-0012 | ESAEYDNYRPNUIHHLEECTOGYDTHCHOTEOGHVEELFAOTTEGTHWNDHNLHROUAESHTNSTWETADRGODTUEEINGOKE | ESAEYDNYRPNUIHHLEECTOGYDTHCHOTEOGHVEELFAOTTEGTHWNDHNLHROUAESHTNSTWETADRGODTUEEINGOKE | THE HEAVENS DECLARE THE GLORY OF GOD DAY UNTO DAY UTTERETH SPEECH NIGHT UNTO NIGHT SHOWETH KNOWLEDGE | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "ZEBRA"
} | intermediate | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
cda-0005600 | IYENPRRMEXCCGUHMIGVRYCGXFRRGGLGULMKLSWDWBFYCLSVQIFLLL | IYENPRRMEXCCGUHMIGVRYCGXFRRGGLGULMKLSWDWBFYCLSVQIFLLL | THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY | autokey | autokey | null | {
"primer": "PRAYER"
} | medium | en | 53 | 53 | synthetic_educational | null | null | [
"running_key_analysis",
"index_of_coincidence"
] | Autokey: Vigenère where the plaintext extends the key — harder to Kasiski-attack. |
affine-vh-0060 | NPW XQJH KQCJ AQH GEXX DW GENP KQC GPWJWRWJ KQC AQ YQ HQ BQN LWOJ QJ DW HEYMOKWH MK SPEXH | NPW XQJH KQCJ AQH GEXX DW GENP KQC GPWJWRWJ KQC AQ YQ HQ BQN LWOJ QJ DW HEYMOKWH MK SPEXH | THE LORD YOUR GOD WILL BE WITH YOU WHEREVER YOU GO SO DO NOT FEAR OR BE DISMAYED MY CHILD | affine | affine | substitution | {
"a": 15,
"b": 14
} | beginner | en | 70 | 89 | cipher_museum | 2.0 | public | null | null |
diana-v2-0676 | NNSAAKWWUFTWYLCUZXBUCCYORIRTJDEBEBGJHUFPVASHSHEGQPJPBWYTYUABMYAQ | NNSAAKWWUFTWYLCUZXBUCCYORIRTJDEBEBGJHUFPVASHSHEGQPJPBWYTYUABMYAQ | WHAT IS IN A NAME THAT WHICH WE CALL A ROSE BY ANY OTHER NAME WOULD SMELL AS SWEET | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 64 | 64 | cipher_museum | 2.0 | public | null | null |
copiale-v3-0192 | P2 H1 B4 B4 H1 P7 A4 C0 O7 M4 N9 S0 C7 P3 M2 F7 H1 F7 R3 P8 E6 B7 F0 N3 Q8 Z3 I1 G3 N2 V8 N6 J0 M8 V8 X6 M8 Q8 B7 W1 Q3 X6 E8 S8 O5 M8 N2 F7 O4 C6 E6 N9 E1 A3 P7 L2 K7 F0 R3 P7 E6 A2 X3 M9 O3 F5 G0 O5 M2 L2 Q3 N2 C0 K4 O0 R3 P7 E4 M8 Q2 N5 O2 C0 K4 | P2 H1 B4 B4 H1 P7 A4 C0 O7 M4 N9 S0 C7 P3 M2 F7 H1 F7 R3 P8 E6 B7 F0 N3 Q8 Z3 I1 G3 N2 V8 N6 J0 M8 V8 X6 M8 Q8 B7 W1 Q3 X6 E8 S8 O5 M8 N2 F7 O4 C6 E6 N9 E1 A3 P7 L2 K7 F0 R3 P7 E6 A2 X3 M9 O3 F5 G0 O5 M2 L2 Q3 N2 C0 K4 O0 R3 P7 E4 M8 Q2 N5 O2 C0 K4 | DIFFIE AND HELLMAN INVENTED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX CHANGING EVERYTHING | copiale | copiale | substitution | {
"type": "keyword",
"value": "TEMPLE"
} | advanced | en | 166 | 248 | cipher_museum | 2.0 | public | null | null |
cda-0017260 | DNMTY VUZDQ KAGII KYMAK PVSFX ETKSQ JUWTZ CJTNK CJACQ UPQOV DAIEI PZOXK G | DNMTY VUZDQ KAGII KYMAK PVSFX ETKSQ JUWTZ CJTNK CJACQ UPQOV DAIEI PZOXK G | FAIL CLOSED IS A POSTURE NOT A SLOGAN THE MESSAGE WAS HIDDEN BUT NOT SECURE | one_time_pad | one_time_pad | null | {} | medium | en | 61 | 61 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
rail-fence-vg-0084 | FSFEIINAEUOTPDVDHNEIHBEHOFEETGETTSCIHOENFSSHSTNNSRHCONTIAGTEO | FSFEIINAEUOTPDVDHNEIHBEHOFEETGETTSCIHOENFSSHSTNNSRHCONTIAGTEO | FAITH IS THE SUBSTANCE OF THINGS HOPED FOR THE EVIDENCE OF THINGS NOT SEEN | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 6
} | intermediate | en | 61 | 61 | cipher_museum | 2.0 | public | null | null |
jn25-v2-0082 | 26199 26187 26194 26198 26184 26102 26187 26194 26182 26180 26193 26193 26194 26199 26197 26184 26192 26184 26192 26181 26184 26197 26199 26187 26184 26195 26180 26198 26199 26180 26197 26184 26182 26194 26193 26183 26184 26192 26193 26184 26183 26199 26194 26197 26184 26195 26184 26180 26199 26188 26199 26180 26198 26... | 26199 26187 26194 26198 26184 26102 26187 26194 26182 26180 26193 26193 26194 26199 26197 26184 26192 26184 26192 26181 26184 26197 26199 26187 26184 26195 26180 26198 26199 26180 26197 26184 26182 26194 26193 26183 26184 26192 26193 26184 26183 26199 26194 26197 26184 26195 26184 26180 26199 26188 26199 26180 26198 26... | THOSE WHO CANNOT REMEMBER THE PAST ARE CONDEMNED TO REPEAT IT AS PHILOSOPHER SANTAYANA OBSERVED | jn25 | jn25 | codebook | {
"type": "additive",
"value": "16180"
} | expert | en | 405 | 485 | cipher_museum | 2.0 | public | null | null |
cda-0013921 | 13 34 31 45 32 33 11 42 44 42 11 33 43 35 34 43 24 44 24 34 33 42 15 11 14 43 13 34 31 45 32 33 43 24 33 25 15 54 34 42 14 15 42 | 13 34 31 45 32 33 11 42 44 42 11 33 43 35 34 43 24 44 24 34 33 42 15 11 14 43 13 34 31 45 32 33 43 24 33 25 15 54 34 42 14 15 42 | COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER | polybius | polybius | null | {} | medium | en | 43 | 43 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
adfgx-118 | GADGGDAADFGFFFFAFGDAGADDAADGAADA | GADGGDAADFGFFFFAFGDAGADDAADGAADA | PROCEED AS PLANNED | adfgx | adfgx | fractionation | {
"polybius": "SECRET",
"columnar": "AGENTS"
} | advanced | en | 32 | 32 | cipher_museum | 0.2 | public | null | null |
cda-0012423 | ⟨w32⟩ ⟨a07⟩ ⟨a17⟩ ⟨w20⟩ ⟨a37⟩ ⟨w10⟩ ⟨a23⟩ ⟨w14⟩ ⟨w10⟩ ⟨w32⟩ ⟨a07⟩ ⟨w14⟩ ⟨w32⟩ ⟨a17⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨w20⟩ ⟨w04⟩ ⟨w20⟩ ⟨w08⟩ ⟨w22⟩ ⟨w28⟩ ⟨a19⟩ ⟨w20⟩ ⟨w22⟩ ⟨a01⟩ ⟨w20⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a19⟩ ⟨a23⟩ ⟨a19⟩ ⟨w20⟩ ⟨w16⟩ ⟨w28⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨w40⟩ ⟨a17⟩ ⟨w32⟩ ⟨w22⟩ ⟨a25⟩ ⟨a19⟩ ⟨w32⟩ ⟨a11⟩ ⟨w28⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨w... | ⟨w32⟩ ⟨a07⟩ ⟨a17⟩ ⟨w20⟩ ⟨a37⟩ ⟨w10⟩ ⟨a23⟩ ⟨w14⟩ ⟨w10⟩ ⟨w32⟩ ⟨a07⟩ ⟨w14⟩ ⟨w32⟩ ⟨a17⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨w20⟩ ⟨w04⟩ ⟨w20⟩ ⟨w08⟩ ⟨w22⟩ ⟨w28⟩ ⟨a19⟩ ⟨w20⟩ ⟨w22⟩ ⟨a01⟩ ⟨w20⟩ ⟨a25⟩ ⟨a25⟩ ⟨w20⟩ ⟨a19⟩ ⟨a23⟩ ⟨a19⟩ ⟨w20⟩ ⟨w16⟩ ⟨w28⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨w40⟩ ⟨a17⟩ ⟨w32⟩ ⟨w22⟩ ⟨a25⟩ ⟨a19⟩ ⟨w32⟩ ⟨a11⟩ ⟨w28⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨w... | INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES | babington | babington | null | {} | hard | en | 204 | 204 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
cda-0022006 | GSVER TVMVI VXRKS VIFHV HZIVK VZGRM TPVBD LIWWR TIZKS ZMWGI RTIZK SUIVJ FVMXR VHVCK LHVHR NKOVX RKSVI HGSVV MRTNZ NZXSR MVFHV WILGL IHGLX IVZGV ZKLOB ZOKSZ YVGRX XRKSV IVMGI LKBNV ZHFIV HFMXV IGZRM GBRMZ WRHGI RYFGR LM | GSVER TVMVI VXRKS VIFHV HZIVK VZGRM TPVBD LIWWR TIZKS ZMWGI RTIZK SUIVJ FVMXR VHVCK LHVHR NKOVX RKSVI HGSVV MRTNZ NZXSR MVFHV WILGL IHGLX IVZGV ZKLOB ZOKSZ YVGRX XRKSV IVMGI LKBNV ZHFIV HFMXV IGZRM GBRMZ WRHGI RYFGR LM | THE VIGENERE CIPHER USES A REPEATING KEYWORD DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | atbash | atbash | null | {} | hard | en | 182 | 182 | synthetic_educational | null | null | [
"self_inverse_check",
"frequency_analysis"
] | Atbash maps A↔Z, B↔Y, … and is its own inverse. |
two-square-v3-0298 | QNECOPUKCKSSQCROTDDEAV | QNECOPUKCKSSQCROTDDEAV | THE CASTLE IS SURROUNDED | two_square | two_square | polygraphic | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
m94-v3-0073 | YGNBVRYRCIZXINWBBKMTLNQCGVFRQLHTCCNZBSFWQKVNUTOENPHKUNQANOXBORSPDGTHYUYEQJGZVW | YGNBVRYRCIZXINWBBKMTLNQCGVFRQLHTCCNZBSFWQKVNUTOENPHKUNQANOXBORSPDGTHYUYEQJGZVW | BLESSED ARE THE MEEK FOR THEY SHALL INHERIT THE EARTH AND THE PEACEMAKERS SHALL BE CALLED SONS | m94 | m94 | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
porta-v2-0675 | MUPFSVBBRSSYMBBOVGRJCALRQZOYGMARUAVPGTHAMSHYQHJUFIPTOGBORXNG | MUPFSVBBRSSYMBBOVGRJCALRQZOYGMARUAVPGTHAMSHYQHJUFIPTOGBORXNG | THIS ABOVE ALL TO THINE OWN SELF BE TRUE AND IT MUST FOLLOW AS NIGHT THE DAY | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "PAPAL"
} | intermediate | en | 60 | 60 | cipher_museum | 2.0 | public | null | null |
great-cipher-v3-0149 | 140 150 182 179 138 166 161 176 167 117 108 128 114 149 157 160 182 114 | 140 150 182 179 138 166 161 176 167 117 108 128 114 149 157 160 182 114 | STEAM POWER TRANSFORMS | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "ROSSIGNOL"
} | expert | en | 54 | 71 | cipher_museum | 2.0 | public | null | null |
fialka-208 | AEQJVOPGXMBLRGN | AEQJVOPGXMBLRGN | EVACUATE THE BASE | fialka | fialka | machine | {
"type": "seed",
"value": "MUSEUM"
} | expert | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
kama-sutra-067 | TSFUA JYBBYFG GFH | TSFUA JYBBYFG GFH | ABORT MISSION NOW | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | en | 15 | 17 | cipher_museum | 0.2 | public | null | null |
m94-v2-0245 | ZSOPBGVLCOQQQ | ZSOPBGVLCOQQQ | ANNUIT COEPTIS | m94 | m94 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
vic-108 | 9034486485958386879389903489958990485804891828695879150123456008758018682849593190382546900654 | 9034486485958386879389903489958990485804891828695879150123456008758018682849593190382546900654 | THE ENEMY KNOWS THE SYSTEM DESIGN YOUR CIPHER ACCORDINGLY WITH GREAT CARE | vic | vic | substitution | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 94 | 94 | cipher_museum | 0.2 | public | null | null |
chinese-telegraph-044 | 0285 0729 0285 0792 0285 0856 1421 0012 1255 1821 0792 1821 0219 0285 0012 1255 1672 0012 1421 1346 0918 0856 1421 0472 0285 0408 0012 0792 0285 0538 1346 0012 0347 0918 0918 1421 0012 0856 0219 1421 0472 0285 0156 1255 0538 0792 0538 0856 0012 0729 0538 1346 0156 0729 0918 1346 0285 | 0285 0729 0285 0792 0285 0856 1421 0012 1255 1821 0792 1821 0219 0285 0012 1255 1672 0012 1421 1346 0918 0856 1421 0472 0285 0408 0012 0792 0285 0538 1346 0012 0347 0918 0918 1421 0012 0856 0219 1421 0472 0285 0156 1255 0538 0792 0538 0856 0012 0729 0538 1346 0156 0729 0918 1346 0285 | ELEMENTARY MY DEAR WATSON THE GAME IS AFOOT AND THE CRIMINAL IS CLOSE | chinese_telegraph | chinese_telegraph | codebook | {
"type": "none",
"value": null
} | expert | en | 228 | 284 | cipher_museum | 0.2 | public | null | null |
enigma-v2-0316 | RDWLGRHOCOVZQISQHKGJGODDSPQLVUHOFNSAYAOHRDREIOUMTDABLHYVAKZAVHWREOKCZWVUBJY | RDWLGRHOCOVZQISQHKGJGODDSPQLVUHOFNSAYAOHRDREIOUMTDABLHYVAKZAVHWREOKCZWVUBJY | TRUST IN THE LORD WITH ALL THINE HEART AND LEAN NOT UNTO THINE OWN UNDERSTANDING IN ALL WAYS | enigma | enigma | machine | {
"type": "rotor_start",
"value": "GHI"
} | expert | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
cda-0013807 | 87 1 33 50 1 58 43 94 59 61 25 48 64 25 17 33 2 30 63 17 27 67 48 91 67 41 60 88 58 23 23 63 72 50 49 60 93 72 99 11 87 76 30 14 40 15 27 34 60 34 1 70 43 63 76 50 59 91 49 72 70 34 33 2 62 43 35 72 96 32 40 15 43 59 81 80 48 41 76 58 62 22 34 68 78 45 11 36 32 82 3 23 35 66 63 88 22 34 33 81 87 34 41 63 68 50 52 49 57... | 87 1 33 50 1 58 43 94 59 61 25 48 64 25 17 33 2 30 63 17 27 67 48 91 67 41 60 88 58 23 23 63 72 50 49 60 93 72 99 11 87 76 30 14 40 15 27 34 60 34 1 70 43 63 76 50 59 91 49 72 70 34 33 2 62 43 35 72 96 32 40 15 43 59 81 80 48 41 76 58 62 22 34 68 78 45 11 36 32 82 3 23 35 66 63 88 22 34 33 81 87 34 41 63 68 50 52 49 57... | CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS | 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. |
jn25-132 | 22347 22343 22350 22342 22349 22352 22355 22349 22369 22347 22342 22345 22358 22341 22349 22348 | 22347 22343 22350 22342 22349 22352 22355 22349 22369 22347 22342 22345 22358 22341 22349 22348 | CIPHER KEY CHANGED | jn25 | jn25 | codebook | {
"type": "additive",
"value": "12345"
} | expert | en | 80 | 95 | cipher_museum | 0.2 | public | null | null |
cda-0004084 | SASEE HHUEE XCALM AERSW UCIEK DURIH OITUI SULME PHBTC ETRAE TTRYS MLOAU NAERO OSDPD RLDOL HXDSS HBTRE OTYMI UNDEA RSHSS ELNGE CANST HCIET AULRT UNSDU U | SASEE HHUEE XCALM AERSW UCIEK DURIH OITUI SULME PHBTC ETRAE TTRYS MLOAU NAERO OSDPD RLDOL HXDSS HBTRE OTYMI UNDEA RSHSS ELNGE CANST HCIET AULRT UNSDU U | SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS THE ARCHITECTURE SHOULD MAKE MISUSE HARDER | double_transposition | double_transposition | null | {
"key1": "SECURE",
"key2": "DRAGON"
} | hard | en | 126 | 126 | synthetic_educational | null | null | [
"key_length_search",
"anagram_recovery"
] | Double columnar transposition: apply columnar twice for stronger security. |
four-square-v2-0104 | GIRUSTKSPENTUTZBNXPESQACNNRUBBSGAURTTKRHGRGITQGMNRGFSTMNTGOTNRLIAZITTGMNCMMTCHZBCGIMDLAUTYLICLCEFLCPCETNSGEOTKNOTFTGMNSGCPPIKILOAPLEUACPCEPUQEMV | GIRUSTKSPENTUTZBNXPESQACNNRUBBSGAURTTKRHGRGITQGMNRGFSTMNTGOTNRLIAZITTGMNCMMTCHZBCGIMDLAUTYLICLCEFLCPCETNSGEOTKNOTFTGMNSGCPPIKILOAPLEUACPCEPUQEMV | 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 | four_square | four_square | polygraphic | {
"key1": "PALACE",
"key2": "BATTLE"
} | advanced | en | 144 | 144 | cipher_museum | 2.0 | public | null | null |
argenti-v2-0268 | 46 29 86 11 77 18 25 27 28 75 77 11 63 42 | 46 29 86 11 77 18 25 27 28 75 77 11 63 42 | COVER MY RETREAT | argenti | argenti | nomenclator | {
"type": "seed",
"value": "VATICAN"
} | expert | en | 28 | 41 | cipher_museum | 2.0 | public | null | null |
typex-203 | DGXAWMHKIMRMN | DGXAWMHKIMRMN | THE KING IS DEAD | typex | typex | machine | {
"type": "keyword",
"value": "SECRET"
} | expert | en | 13 | 13 | cipher_museum | 0.2 | public | null | null |
cda-0005917 | SEVRQZNA RFGVZNGRQ XRL YRATGU SEBZ FGNGVFGVPF GENAFCBFVGVBA PVCUREF ERNEENATR YRGGREF JVGUBHG FHOFGVGHGVBA GUR ZRFFNTR JNF UVQQRA OHG ABG FRPHER UHZNA ERNQNOYR BHGCHG FUBHYQ FUBJ NYY ERNFBAVAT FGRCF | SEVRQZNA RFGVZNGRQ XRL YRATGU SEBZ FGNGVFGVPF GENAFCBFVGVBA PVCUREF ERNEENATR YRGGREF JVGUBHG FHOFGVGHGVBA GUR ZRFFNTR JNF UVQQRA OHG ABG FRPHER UHZNA ERNQNOYR BHGCHG FUBHYQ FUBJ NYY ERNFBAVAT FGRCF | FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION THE MESSAGE WAS HIDDEN BUT NOT SECURE HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 172 | 172 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
cda-0021171 | 3.22.6 5.29.4 18.40.9 1.44.8 2.49.9 6.7.6 3.9.8 5.8.4 10.7.3 13.13.8 15.25.8 17.15.9 4.37.1 15.46.14 10.40.10 13.29.15 15.24.5 5.27.7 2.39.13 19.34.5 9.25.1 19.47.1 11.34.6 14.16.12 19.20.13 6.4.8 5.11.13 19.2.15 13.30.15 10.38.1 5.31.1 6.38.13 6.25.11 16.1.6 14.16.11 2.22.14 17.15.9 13.28.1 14.30.1 3.46.11 19.32.2 8.5... | 3.22.6 5.29.4 18.40.9 1.44.8 2.49.9 6.7.6 3.9.8 5.8.4 10.7.3 13.13.8 15.25.8 17.15.9 4.37.1 15.46.14 10.40.10 13.29.15 15.24.5 5.27.7 2.39.13 19.34.5 9.25.1 19.47.1 11.34.6 14.16.12 19.20.13 6.4.8 5.11.13 19.2.15 13.30.15 10.38.1 5.31.1 6.38.13 6.25.11 16.1.6 14.16.11 2.22.14 17.15.9 13.28.1 14.30.1 3.46.11 19.32.2 8.5... | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS | book_cipher | book_cipher | null | {} | medium | en | 46 | 46 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
cda-0019203 | ARRA YTRA CKRO UTEA LERT NIGH TSCO UTPO INTA MONG RIGH TENT ERNA VALT ROOP TRAC KOFT ENOU TERL EADS SHOR EHOU RSOT HERU NITS LOWE RDRA FTST AGEH ENCE OFTE N | ARRA YTRA CKRO UTEA LERT NIGH TSCO UTPO INTA MONG RIGH TENT ERNA VALT ROOP TRAC KOFT ENOU TERL EADS SHOR EHOU RSOT HERU NITS LOWE RDRA FTST AGEH ENCE OFTE N | A TRANSPARENT TOOL SHOULD SHOW ITS REASONING KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES A STRONG CLAIM NEEDS STRONG EVIDENCE | 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-0009635 | ESDE ATLS RTLS HEHE HTSS TVEE ATME SOTO TODH WSBO TNMR YNHH DEOW EFDA AMHN SERO ESYE NELT SEEI Y | ESDE ATLS RTLS HEHE HTSS TVEE ATME SOTO TODH WSBO TNMR YNHH DEOW EFDA AMHN SERO ESYE NELT SEEI Y | EVERY SYSTEM NEEDS AN HONEST THREAT MODEL THE BEST LESSONS SHOW WHERE THE METHOD FAILS TODAY | stager_route | stager_route | null | {
"cols": 7
} | medium | en | 77 | 77 | synthetic_educational | null | null | [] |
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