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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
adfgx-020 | DGADFAADADXDAFAADDADFDXDFXDXAXAFXG | DGADFAADADXDAFAADDADFDXDFXDXAXAFXG | CRYPTOGRAPHY RULES | adfgx | adfgx | fractionation | {
"polybius": "PRIVACY",
"columnar": "GERMAN"
} | advanced | en | 34 | 34 | cipher_museum | 0.2 | public | null | null |
geez-monastic-v3-0043 | OJUUPDJMJQJYZJIQVJPMVR | OJUUPDJMJQJYZJIQVJPMVR | MESSAGE RECEIVED CLEARLY | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "ETHIOPIA"
} | advanced | en | 22 | 22 | cipher_museum | 2.0 | public | null | null |
culper-ring-v3-0002 | 226 100 998 817 820 801 808 802 814 813 999 162 | 226 100 998 817 820 801 808 802 814 813 999 162 | CROSS THE RUBICON NOW | culper_ring | culper_ring | codebook | {
"type": "none",
"value": null
} | expert | en | 36 | 47 | cipher_museum | 2.0 | public | null | null |
great-cipher-v2-0125 | 108 178 171 127 142 125 119 163 123 166 182 131 141 102 160 147 114 152 119 159 129 181 148 122 106 136 175 128 179 129 169 104 136 157 154 181 148 176 144 100 172 166 149 171 152 143 100 141 151 161 111 166 174 128 121 140 166 125 141 142 170 162 100 181 138 131 119 181 173 151 104 127 174 143 151 165 158 138 172 127 ... | 108 178 171 127 142 125 119 163 123 166 182 131 141 102 160 147 114 152 119 159 129 181 148 122 106 136 175 128 179 129 169 104 136 157 154 181 148 176 144 100 172 166 149 171 152 143 100 141 151 161 111 166 174 128 121 140 166 125 141 142 170 162 100 181 138 131 119 181 173 151 104 127 174 143 151 165 158 138 172 127 ... | 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 | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "VERSAILLES"
} | expert | en | 393 | 523 | cipher_museum | 2.0 | public | null | null |
adfgvx-v3-0079 | AFADFVVAVVGVFXAGFFAAVGGGDFDGGFGGAAAGDDFAFFAFFFVGAAFAFFAFFFFFFGXFDGGVVVVDDFVDVXVGFGVADAFADAFDGGGDAADAAADDAFDFGADGDADADFFDFFAGGAGFDAGFAGFAFDGFVDVVVFGVFFFADGDFADAGFDFGDVDF | AFADFVVAVVGVFXAGFFAAVGGGDFDGGFGGAAAGDDFAFFAFFFVGAAFAFFAFFFFFFGXFDGGVVVVDDFVDVXVGFGVADAFADAFDGGGDAADAAADDAFDFGADGDADADFFDFFAGGAGFDAGFAGFAFDGFVDVVVFGVFFFADGDFADAGFDFGDVDF | SIGNALS INTELLIGENCE OR SIGINT INVOLVES INTERCEPTION AND ANALYSIS OF ELECTRONIC COMMUNICATIONS | adfgvx | adfgvx | fractionation | {
"polybius": "PALACE",
"columnar": "BATTLE"
} | advanced | en | 168 | 168 | cipher_museum | 2.0 | public | null | null |
nihilist-v2-0234 | 52 48 28 46 40 56 58 52 39 26 57 58 56 50 73 46 25 56 76 54 80 85 27 66 26 66 94 49 72 36 28 39 38 64 58 72 36 56 26 66 56 58 72 40 27 56 66 65 87 45 56 35 65 40 56 50 73 60 59 26 57 83 77 42 66 59 28 50 65 76 73 50 28 55 49 53 58 52 57 29 56 56 84 87 45 30 45 26 77 56 68 82 56 39 29 39 67 76 82 50 27 28 40 87 50 45 58... | 52 48 28 46 40 56 58 52 39 26 57 58 56 50 73 46 25 56 76 54 80 85 27 66 26 66 94 49 72 36 28 39 38 64 58 72 36 56 26 66 56 58 72 40 27 56 66 65 87 45 56 35 65 40 56 50 73 60 59 26 57 83 77 42 66 59 28 50 65 76 73 50 28 55 49 53 58 52 57 29 56 56 84 87 45 30 45 26 77 56 68 82 56 39 29 39 67 76 82 50 27 28 40 87 50 45 58... | 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 | nihilist | nihilist | fractionation | {
"polybius": "LIBERTY",
"keyword": "FREEDOM"
} | advanced | en | 344 | 515 | cipher_museum | 2.0 | public | null | null |
bazeries-v2-0868 | FFSLSULSYMBTMSEINTTNHJTVIBPTAHTVHTAUESHPTFPSIVSPTUDMQGTMPQGTESHUTFHTABMQIOHYLQVLIUMTQGTMPMGTTSHBBPVUTRHTASTUHTLLSTGTUPMQDSGAPTHTTXGTFTERTBTUTTLSLSYSUSX | FFSLSULSYMBTMSEINTTNHJTVIBPTAHTVHTAUESHPTFPSIVSPTUDMQGTMPQGTESHUTFHTABMQIOHYLQVLIUMTQGTMPMGTTSHBBPVUTRHTASTUHTLLSTGTUPMQDSGAPTHTTXGTFTERTBTUTTLSLSYSUSX | ALL WARFARE IS BASED ON DECEPTION HENCE WHEN ABLE TO ATTACK WE MUST SEEM UNABLE WHEN USING OUR FORCES WE MUST SEEM INACTIVE WHEN WE ARE NEAR WE MUST MAKE THE ENEMY BELIEVE WE ARE FAR AWAY | bazeries | bazeries | transposition | {
"type": "integer",
"value": 71
} | advanced | en | 151 | 151 | cipher_museum | 2.0 | public | null | null |
cda-0016835 | THEK ASIS KIEX AMXN ATIZ NFIN DSRE PEAT EDTR IGRA MSIN XIPH ERTE XTGO ODED UCAT XONA LTOO LSEX PLAI NTHE XRLI MXTS ATRA NSPX RENT TOOL SHOU LDXH OWIT SREA XONI NGBR UTZF ORCX WORK XONL YWHE NTZE KEYZ PACE ISSM AXLA ZDZ | THEK ASIS KIEX AMXN ATIZ NFIN DSRE PEAT EDTR IGRA MSIN XIPH ERTE XTGO ODED UCAT XONA LTOO LSEX PLAI NTHE XRLI MXTS ATRA NSPX RENT TOOL SHOU LDXH OWIT SREA XONI NGBR UTZF ORCX WORK XONL YWHE NTZE KEYZ PACE ISSM AXLA ZDZ | THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS A TRANSPARENT TOOL SHOULD SHOW ITS REASONING BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL | commercial_code | commercial_code | null | {} | hard | en | 175 | 175 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
cda-0012908 | 57 34 76 70 11 61 23 30 64 32 43 48 43 1 62 59 57 59 25 11 33 36 14 33 99 87 22 27 11 91 94 23 34 22 63 48 82 91 49 99 57 80 33 92 27 4 26 64 23 39 21 82 81 35 39 1 43 43 59 46 41 63 82 68 60 22 34 15 11 67 14 25 93 25 35 1 15 1 39 43 76 67 48 86 34 72 70 24 | 57 34 76 70 11 61 23 30 64 32 43 48 43 1 62 59 57 59 25 11 33 36 14 33 99 87 22 27 11 91 94 23 34 22 63 48 82 91 49 99 57 80 33 92 27 4 26 64 23 39 21 82 81 35 39 1 43 43 59 46 41 63 82 68 60 22 34 15 11 67 14 25 93 25 35 1 15 1 39 43 76 67 48 86 34 72 70 24 | GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG | homophonic | homophonic | null | {} | hard | en | 88 | 88 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
atbash-v2-0029 | KZGRVMXV YIRMTH ERXGLIB | KZGRVMXV YIRMTH ERXGLIB | PATIENCE BRINGS VICTORY | atbash | atbash | substitution | {
"type": "none",
"value": null
} | beginner | en | 21 | 23 | cipher_museum | 2.0 | public | null | null |
m209-v2-0276 | MVZIDUSJXFGAZFJL | MVZIDUSJXFGAZFJL | THE WALLS HAVE EARS | m209 | m209 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
porta-228 | PZDFHNLHCWFGXJHAJJROUUGYCBECYGZVLIMAGZNQKMMZZWEDWYKZJHOE | PZDFHNLHCWFGXJHAJJROUUGYCBECYGZVLIMAGZNQKMMZZWEDWYKZJHOE | IF YOU KNOW BOTH YOURSELF AND YOUR ENEMY YOU NEED NOT FEAR THE RESULT | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "PORTAGE"
} | intermediate | en | 56 | 56 | cipher_museum | 0.2 | public | null | null |
purple-065 | KGYOVSWXENGASMO | KGYOVSWXENGASMO | THE COAST IS CLEAR | purple | purple | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
great-cipher-v2-0087 | 118 128 167 176 129 171 128 174 171 166 170 174 157 102 133 178 141 152 113 156 143 136 151 119 106 141 167 108 178 136 121 158 179 142 167 154 125 135 108 178 171 166 144 156 152 120 143 119 171 161 156 166 125 119 163 123 166 138 156 113 129 178 | 118 128 167 176 129 171 128 174 171 166 170 174 157 102 133 178 141 152 113 156 143 136 151 119 106 141 167 108 178 136 121 158 179 142 167 154 125 135 108 178 171 166 144 156 152 120 143 119 171 161 156 166 125 119 163 123 166 138 156 113 129 178 | ALAN TURING AND GORDON WELCHMAN BUILT THE BOMBE TO ATTACK THE GERMAN ENIGMA CIPHER MACHINE | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "VERSAILLES"
} | expert | en | 186 | 247 | cipher_museum | 2.0 | public | null | null |
cda-0016738 | 11 69 29 69 66 52 69 29 76 59 61 82 69 20 76 59 61 52 68 66 50 69 29 89 50 66 36 82 29 52 80 43 65 66 50 69 29 | 11 69 29 69 66 52 69 29 76 59 61 82 69 20 76 59 61 52 68 66 50 69 29 89 50 66 36 82 29 52 80 43 65 66 50 69 29 | DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION | wallis_cipher | wallis_cipher | null | {} | medium | en | 37 | 37 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
culper-ring-053 | 998 811 804 819 999 998 809 820 818 819 808 802 804 999 112 998 803 814 813 804 999 998 819 807 814 820 806 807 999 100 998 807 804 800 821 804 813 818 999 998 805 800 811 811 999 102 100 998 818 819 800 817 818 999 139 998 803 800 817 810 999 998 805 814 817 804 821 804 817 999 | 998 811 804 819 999 998 809 820 818 819 808 802 804 999 112 998 803 814 813 804 999 998 819 807 814 820 806 807 999 100 998 807 804 800 821 804 813 818 999 998 805 800 811 811 999 102 100 998 818 819 800 817 818 999 139 998 803 800 817 810 999 998 805 814 817 804 821 804 817 999 | LET JUSTICE BE DONE THOUGH THE HEAVENS FALL AND THE STARS GO DARK FOREVER | culper_ring | culper_ring | codebook | {
"type": "none",
"value": null
} | expert | en | 210 | 279 | cipher_museum | 0.2 | public | null | null |
columnar-transposition-v3-0228 | OMGORDFALLDE | OMGORDFALLDE | GOLD FROM LEAD | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "BATTLE"
} | intermediate | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
playfair-204 | CHFZGYOKCFCNCPVRNDDPABIZFZGYNKPDUGOKNKPNKDOGAVHCWYCM | CHFZGYOKCFCNCPVRNDDPABIZFZGYNKPDUGOKNKPNKDOGAVHCWYCM | ALL THE WORLDS A STAGE AND ALL THE MEN AND WOMEN MERELY PLAYERS | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "KEYWORD"
} | intermediate | en | 52 | 52 | cipher_museum | 0.2 | public | null | null |
wheatstone-v3-0219 | BVAJBPEBCPBSEBMHAKB | BVAJBPEBCPBSEBMHAKB | AVE MARIA GRATIA PLENA | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "BRITAIN"
} | advanced | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
adfgvx-050 | DGGADGAGADGGGGFDDGGVAVFGVVDXGAGGFFAGAGAGAGAAFAFGFGDAAGDFADVDAFGAGXAGVFFVDVGGXFVGFAVGGFGGGGFGFADAGAFAGAGDAAGDAA | DGGADGAGADGGGGFDDGGVAVFGVVDXGAGGFFAGAGAGAGAAFAFGFGDAAGDFADVDAFGAGXAGVFFVDVGGXFVGFAVGGFGGGGFGFADAGAFAGAGDAAGDAA | THE ART OF WAR IS OF VITAL IMPORTANCE TO THE STATE IT IS LIFE OR DEATH | adfgvx | adfgvx | fractionation | {
"polybius": "PRIVACY",
"columnar": "GERMAN"
} | advanced | en | 110 | 110 | cipher_museum | 0.2 | public | null | null |
double-transposition-224 | EDELEYMENEAIGEHNEAALRISSORSSYNOEAMIMTCHFARTMTTOTALNWCODAI | EDELEYMENEAIGEHNEAALRISSORSSYNOEAMIMTCHFARTMTTOTALNWCODAI | ELEMENTARY MY DEAR WATSON THE GAME IS AFOOT AND THE CRIMINAL IS CLOSE | double_transposition | double_transposition | transposition | {
"key1": "SECRET",
"key2": "AGENTS"
} | advanced | en | 57 | 57 | cipher_museum | 0.2 | public | null | null |
cda-0004614 | AENTP TRESV RUOER NAAAE BUEIG SCLAR PFFPF CITCN SAUCH ULINI NLIRR LOEEN ECEEC STTFD FWLUE RTIAI PLOEA SLYXD ESRNI H | AENTP TRESV RUOER NAAAE BUEIG SCLAR PFFPF CITCN SAUCH ULINI NLIRR LOEEN ECEEC STTFD FWLUE RTIAI PLOEA SLYXD ESRNI H | AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN SLOWLY | stager_route | stager_route | null | {
"cols": 12
} | hard | en | 96 | 96 | synthetic_educational | null | null | [
"column_count_search",
"route_pattern_search"
] | Route (Stager) cipher: write into rectangle, read via alternating column route. |
slidex-v3-0091 | NEMUUJYMNDAEBAMUUKXPIPYMXVBASYLRMVEBQEFYSWGEAXAKDLVHPDLKEVASVCLNVHFYSWGEAXAKPWRREA | NEMUUJYMNDAEBAMUUKXPIPYMXVBASYLRMVEBQEFYSWGEAXAKDLVHPDLKEVASVCLNVHFYSWGEAXAKPWRREA | ZERO KNOWLEDGE PROOFS ALLOW ONE PARTY TO PROVE KNOWLEDGE WITHOUT REVEALING THE KNOWLEDGE ITSELF | slidex | slidex | transposition | {
"type": "keyword",
"value": "BLETCHLEY"
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
hill-v3-0354 | DNVSKMRMIL | DNVSKMRMIL | DOT DASH DOT | hill | hill | polygraphic | {
"a": 9,
"b": 2,
"c": 7,
"d": 5
} | advanced | en | 10 | 10 | cipher_museum | 2.0 | public | null | null |
cda-0015776 | BEUYJ NBVEM LVVBS DCWGA ZEYBU IKVDM CCVMW FLAEL NASIX GMXMN MFHPV RGCHL HIOID CAXGC CMNXE RUIYA TTDUT PITKJ NMIAI IEATW TXLQG IHBVV SJCNM VLATV GCIEF XVUMZ WONHM OPJZP NFRRR GRFSA CSUQI PSERT POAGG LFUAW IEPYL QKLSE | BEUYJ NBVEM LVVBS DCWGA ZEYBU IKVDM CCVMW FLAEL NASIX GMXMN MFHPV RGCHL HIOID CAXGC CMNXE RUIYA TTDUT PITKJ NMIAI IEATW TXLQG IHBVV SJCNM VLATV GCIEF XVUMZ WONHM OPJZP NFRRR GRFSA CSUQI PSERT POAGG LFUAW IEPYL QKLSE | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER | running_key | running_key | null | {} | hard | en | 180 | 180 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
columnar-transposition-v2-0892 | EYWDENGOABEDITTDRDRSA | EYWDENGOABEDITTDRDRSA | BRIDGE DESTROYED AT DAWN | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
kryptos-v2-0270 | PFBNZZNYTHWYX | PFBNZZNYTHWYX | AWAIT MY SIGNAL | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "VIRTUAL"
} | advanced | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-v2-0116 | 425128562280297602517025162280252028283547420342512920271425291452881225743832461137020047261025128120221425291211082214251048282874204160251610456142529760572282512812022142529183425170204250523682425415720310023562580320291020271 | 425128562280297602517025162280252028283547420342512920271425291452881225743832461137020047261025128120221425291211082214251048282874204160251610456142529760572282512812022142529183425170204250523682425415720310023562580320291020271 | THE LORD IS MY SHEPHERD I SHALL NOT WANT HE MAKETH ME TO LIE DOWN IN GREEN PASTURES HE LEADETH ME BESIDE THE STILL WATERS HE RESTORETH MY SOUL HE LEADETH ME IN THE PATHS OF RIGHTEOUSNESS FOR HIS NAME SAKE | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "SENTORISCA"
} | advanced | en | 231 | 231 | cipher_museum | 2.0 | public | null | null |
fialka-v2-0288 | VHACQHONNQGIJO | VHACQHONNQGIJO | LIBERTY OR DEATH | fialka | fialka | machine | {
"type": "seed",
"value": "SOVIET"
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0011811 | ERTRI ICWHK HJUAZ GEJLE VBPES AVBVN PEEXJ SVFLB KLOUA HVLYV CFVLC EFRQF QUSOC XVTLH YDWFH NRVXV VWEXX ZFA | ERTRI ICWHK HJUAZ GEJLE VBPES AVBVN PEEXJ SVFLB KLOUA HVLYV CFVLC EFRQF QUSOC XVTLH YDWFH NRVXV VWEXX ZFA | PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY | autokey | autokey | null | {
"primer": "PRAYER"
} | hard | en | 88 | 88 | synthetic_educational | null | null | [] | |
slidex-v2-0014 | EBWRPUJKFQCZAH | EBWRPUJKFQCZAH | PRESS THE ATTACK | slidex | slidex | transposition | {
"type": "keyword",
"value": "BLETCHLEY"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
jefferson-disk-141 | VUSNNMGKIAIZEPHFGZIRIAIOWUQUQYBDHFZZXXMYITXYITVYXDIMIJOZM | VUSNNMGKIAIZEPHFGZIRIAIOWUQUQYBDHFZZXXMYITXYITVYXDIMIJOZM | WE HOLD THESE TRUTHS TO BE SELF EVIDENT THAT ALL MEN ARE CREATED EQUAL | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "5,3,6,1,4,2"
} | expert | en | 57 | 57 | cipher_museum | 0.2 | public | null | null |
cda-0013641 | 8 21 13 1 14 18 5 1 4 1 2 12 5 15 21 20 16 21 20 19 8 15 21 12 4 19 8 15 23 1 12 12 18 5 1 19 15 14 9 14 7 19 20 5 16 19 20 8 5 9 14 4 5 24 15 6 3 15 9 14 3 9 4 5 14 3 5 9 19 1 21 19 5 6 21 12 3 12 21 5 20 8 5 20 18 9 20 8 5 13 9 21 19 3 9 16 8 5 18 1 4 22 1 14 3 5 19 20 8 5 1 12 16 8 1 2 5 20 2 25 15 14 5 16 15 19 9 2... | 8 21 13 1 14 18 5 1 4 1 2 12 5 15 21 20 16 21 20 19 8 15 21 12 4 19 8 15 23 1 12 12 18 5 1 19 15 14 9 14 7 19 20 5 16 19 20 8 5 9 14 4 5 24 15 6 3 15 9 14 3 9 4 5 14 3 5 9 19 1 21 19 5 6 21 12 3 12 21 5 20 8 5 20 18 9 20 8 5 13 9 21 19 3 9 16 8 5 18 1 4 22 1 14 3 5 19 20 8 5 1 12 16 8 1 2 5 20 2 25 15 14 5 16 15 19 9 2... | HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS THE INDEX OF COINCIDENCE IS A USEFUL CLUE THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 141 | 141 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
cda-0019950 | 44 23 15 42 11 24 31 21 15 33 13 15 13 24 35 23 15 42 52 42 24 44 15 43 44 15 53 44 24 33 11 55 24 22 55 11 22 35 11 44 44 15 42 33 14 34 33 34 44 13 34 33 21 45 43 15 34 12 21 45 43 13 11 44 24 34 33 52 24 44 23 15 33 13 42 54 35 44 24 34 33 | 44 23 15 42 11 24 31 21 15 33 13 15 13 24 35 23 15 42 52 42 24 44 15 43 44 15 53 44 24 33 11 55 24 22 55 11 22 35 11 44 44 15 42 33 14 34 33 34 44 13 34 33 21 45 43 15 34 12 21 45 43 13 11 44 24 34 33 52 24 44 23 15 33 13 42 54 35 44 24 34 33 | THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION | polybius | polybius | null | {} | hard | en | 81 | 81 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
cda-0021044 | .. ... .. .... ... . ... . . ... .. .... ... ..... .. ... . ..... .... .. .... ..... .... ... . ..... .... ... ... . .. .... ... ... . ..... . . .... .. . . ... . .. .. . ..... . .. .... .. . . .... .... ... .... . ..... ... ... . ... .... .. ..... .... ... ..... .... .... . .. ... ... | .. ... .. .... ... . ... . . ... .. .... ... ..... .. ... . ..... .... .. .... ..... .... ... . ..... .... ... ... . .. .... ... ... . ..... . . .... .. . . ... . .. .. . ..... . .. .... .. . . .... .... ... .... . ..... ... ... . ... .... .. ..... .... ... ..... .... .... . .. ... ... | HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS NEVER | tap_code | tap_code | null | {} | medium | en | 56 | 56 | 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. |
diana-v3-0527 | XUBRBJQOMQAULG | XUBRBJQOMQAULG | MARCH TO VICTORY | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0016777 | ⟨a17⟩ ⟨w10⟩ ⟨a07⟩ ⟨w10⟩ ⟨a25⟩ ⟨w14⟩ ⟨w10⟩ ⟨a07⟩ ⟨a23⟩ ⟨w28⟩ ⟨w22⟩ ⟨w20⟩ ⟨w10⟩ ⟨a11⟩ ⟨a23⟩ ⟨w28⟩ ⟨w22⟩ ⟨w14⟩ ⟨w08⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨w34⟩ ⟨w32⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨a19⟩ ⟨w40⟩ ⟨a13⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ | ⟨a17⟩ ⟨w10⟩ ⟨a07⟩ ⟨w10⟩ ⟨a25⟩ ⟨w14⟩ ⟨w10⟩ ⟨a07⟩ ⟨a23⟩ ⟨w28⟩ ⟨w22⟩ ⟨w20⟩ ⟨w10⟩ ⟨a11⟩ ⟨a23⟩ ⟨w28⟩ ⟨w22⟩ ⟨w14⟩ ⟨w08⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨w34⟩ ⟨w32⟩ ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨a19⟩ ⟨w40⟩ ⟨a13⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ | DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION | babington | babington | null | {} | medium | en | 37 | 37 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
argenti-v3-0105 | 37 82 83 17 67 28 84 26 20 18 63 75 22 13 23 15 83 44 | 37 82 83 17 67 28 84 26 20 18 63 75 22 13 23 15 83 44 | THE ORACLE HAS SPOKEN | argenti | argenti | nomenclator | {
"type": "seed",
"value": "PAPAL"
} | expert | en | 36 | 53 | cipher_museum | 2.0 | public | null | null |
m209-v2-0091 | LXXJXEKAIRWAMCJNWZZCAPZAJUMWYJXVMBXTCVMMPOYRXLWYNSADXJMZUBPHLKEEMAELDCIPKQPOMMOF | LXXJXEKAIRWAMCJNWZZCAPZAJUMWYJXVMBXTCVMMPOYRXLWYNSADXJMZUBPHLKEEMAELDCIPKQPOMMOF | THE SECRET LIES BURIED BENEATH THE THIRD FLAGSTONE OF THE OLD CHURCH COURTYARD AT DAWN TOMORROW | m209 | m209 | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
vic-091 | 18693659034858756841899087903423958910684689903544189908787864 | 18693659034858756841899087903423958910684689903544189908787864 | IN WAR THE MORAL IS TO THE PHYSICAL AS THREE IS TO ONE | vic | vic | substitution | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 62 | 62 | cipher_museum | 0.2 | public | null | null |
diana-096 | CXEOXNGUYWBZCQWHYNCVMHTGJBLVAECVMLQFYVDDNNRKAWETYRX | CXEOXNGUYWBZCQWHYNCVMHTGJBLVAECVMLQFYVDDNNRKAWETYRX | ALL THE WORLDS A STAGE AND ALL THE MEN AND WOMEN MERELY PLAYERS | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | en | 51 | 51 | cipher_museum | 0.2 | public | null | null |
nihilist-v3-0010 | 32 27 86 56 56 26 36 54 56 56 35 27 64 56 86 56 | 32 27 86 56 56 26 36 54 56 56 35 27 64 56 86 56 | PER ASPERA AD ASTRA | nihilist | nihilist | fractionation | {
"polybius": "PALACE",
"keyword": "BATTLE"
} | advanced | en | 32 | 47 | cipher_museum | 2.0 | public | null | null |
cda-0004621 | GJKSGSI EOJ WSMHXDQL GXHRYFTFJIT KAQSTK VJQQRH DMQNHSW UNH WMHKQFVF ILQLFX XTIT G UFTFGWJRH QHZAPXG DISZDJRME | GJKSGSI EOJ WSMHXDQL GXHRYFTFJIT KAQSTK VJQQRH DMQNHSW UNH WMHKQFVF ILQLFX XTIT G UFTFGWJRH QHZAPXG DISZDJRME | DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS THE VIGENERE CIPHER USES A REPEATING KEYWORD CERTAINLY | gronsfeld | gronsfeld | null | {
"key": "31416"
} | hard | en | 95 | 95 | synthetic_educational | null | null | [
"kasiski_examination",
"digit_key_brute_force"
] | Gronsfeld: Vigenère variant with a digit-only key (0–9 per position). |
m209-v2-0067 | WRIUXFXYTPRWRXXQBBLZEJZXJUBWYCJZQEPBJUABDKJYCRAZBMTSALLFBLJMOQJXZYECCOZZZAM | WRIUXFXYTPRWRXXQBBLZEJZXJUBWYCJZQEPBJUABDKJYCRAZBMTSALLFBLJMOQJXZYECCOZZZAM | IN THE BEGINNING GOD CREATED THE HEAVEN AND THE EARTH AND DARKNESS WAS UPON THE FACE OF DEEP | m209 | m209 | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
slidex-v2-0007 | ZPXBANQOOVOPPW | ZPXBANQOOVOPPW | SIGNAL FIRES LIT | slidex | slidex | transposition | {
"type": "keyword",
"value": "BLETCHLEY"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
kryptos-v2-0040 | ZNBHNPDUBXDHJQNZSIINYEEB | ZNBHNPDUBXDHJQNZSIINYEEB | NORTH STAR HOLDS FIRM COURSE | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "SHADOW"
} | advanced | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
affine-v3-1165 | QUV AILSQLSD AIVZZ NUFSDVZ FKK | QUV AILSQLSD AIVZZ NUFSDVZ FKK | THE PRINTING PRESS CHANGES ALL | affine | affine | substitution | {
"a": 17,
"b": 5
} | beginner | en | 26 | 30 | cipher_museum | 2.0 | public | null | null |
fialka-v2-0170 | XNHKBEYIFKXMRMEFZTXXTXZBJYWGJKSWFPYLAJMZRASOUKITEJFEQTJAGHCVCTLSNKOS | XNHKBEYIFKXMRMEFZTXXTXZBJYWGJKSWFPYLAJMZRASOUKITEJFEQTJAGHCVCTLSNKOS | COWARDS DIE MANY TIMES BEFORE THEIR DEATHS THE VALIANT NEVER TASTE DEATH BUT ONCE | fialka | fialka | machine | {
"type": "seed",
"value": "KREMLIN"
} | expert | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
one-time-pad-v3-0158 | TKYEMMIBVTRKDXEVDGZTIFCBIQJDIDWMOVHDYGXYNPBSDSEGBPYPUJVLECINOALJHQONRYYR | TKYEMMIBVTRKDXEVDGZTIFCBIQJDIDWMOVHDYGXYNPBSDSEGBPYPUJVLECINOALJHQONRYYR | DO UNTO OTHERS AS YOU WOULD HAVE THEM DO UNTO YOU THIS IS THE GOLDEN RULE OF ALL RELIGIONS | one_time_pad | one_time_pad | stream | {
"type": "pad",
"value": "QWERTY (repeating)"
} | expert | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
cda-0020528 | 50 29 11 82 73 69 76 52 69 50 29 52 50 11 82 29 52 82 77 82 68 61 59 80 82 61 57 82 66 66 82 80 76 80 82 72 59 82 29 52 43 11 50 61 66 80 50 20 59 66 50 69 29 68 61 52 43 66 68 57 82 50 61 68 80 69 11 59 61 82 11 20 43 61 65 68 80 66 68 29 61 66 69 82 29 52 80 43 65 66 77 82 61 61 68 25 82 61 66 36 82 68 80 52 36 50 66... | 50 29 11 82 73 69 76 52 69 50 29 52 50 11 82 29 52 82 77 82 68 61 59 80 82 61 57 82 66 66 82 80 76 80 82 72 59 82 29 52 43 11 50 61 66 80 50 20 59 66 50 69 29 68 61 52 43 66 68 57 82 50 61 68 80 69 11 59 61 82 11 20 43 61 65 68 80 66 68 29 61 66 69 82 29 52 80 43 65 66 77 82 61 61 68 25 82 61 66 36 82 68 80 52 36 50 66... | INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES THE ARCHITECTURE SHOULD MAKE MISUSE HARDER SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER | wallis_cipher | wallis_cipher | null | {} | hard | en | 185 | 185 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
diana-v2-0520 | DDJAMCOONLNZOT | DDJAMCOONLNZOT | COVER MY RETREAT | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
playfair-v3-0462 | RFAQLHRZPLDSNFZNLPTUIMQLPLKHLSRZIACDGZQBLQLPKFNDEOPLGZMNUTFRSFBGRBLOUGUDRDWHTYGNHWDXGZGIBESFLYDOOKCYKFKUIMKYTDDBCINTUFHGRBLOXDPKCINCRGLOQFCWZUUDBFGIRLRQKYNIRBEIOK | RFAQLHRZPLDSNFZNLPTUIMQLPLKHLSRZIACDGZQBLQLPKFNDEOPLGZMNUTFRSFBGRBLOUGUDRDWHTYGNHWDXGZGIBESFLYDOOKCYKFKUIMKYTDDBCINTUFHGRBLOXDPKCINCRGLOQFCWZUUDBFGIRLRQKYNIRBEIOK | 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 | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "FREEDOM"
} | intermediate | en | 162 | 162 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v3-0291 | ESPCTRSEZQESPAPZAWPEZVPPALYOMPLCLCXDDSLWWYZEMPTYQCTYRPOMJESPQPOPCLWRZGPCYXPYE | ESPCTRSEZQESPAPZAWPEZVPPALYOMPLCLCXDDSLWWYZEMPTYQCTYRPOMJESPQPOPCLWRZGPCYXPYE | THE RIGHT OF THE PEOPLE TO KEEP AND BEAR ARMS SHALL NOT BE INFRINGED BY THE FEDERAL GOVERNMENT | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "HANGUL"
} | beginner | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
cda-0013315 | 20 8 5 2 5 19 20 12 5 19 19 15 14 19 19 8 15 23 23 8 5 18 5 20 8 5 13 5 20 8 15 4 6 1 9 12 19 20 8 5 22 9 7 5 14 5 18 5 3 9 16 8 5 18 21 19 5 19 1 18 5 16 5 1 20 9 14 7 11 5 25 23 15 18 4 1 14 1 6 6 9 14 5 3 9 16 8 5 18 1 16 16 12 9 5 19 1 12 9 14 5 1 18 6 21 14 3 20 9 15 14 20 15 5 1 3 8 12 5 20 20 5 18 5 14 20 18 15 ... | 20 8 5 2 5 19 20 12 5 19 19 15 14 19 19 8 15 23 23 8 5 18 5 20 8 5 13 5 20 8 15 4 6 1 9 12 19 20 8 5 22 9 7 5 14 5 18 5 3 9 16 8 5 18 21 19 5 19 1 18 5 16 5 1 20 9 14 7 11 5 25 23 15 18 4 1 14 1 6 6 9 14 5 3 9 16 8 5 18 1 16 16 12 9 5 19 1 12 9 14 5 1 18 6 21 14 3 20 9 15 14 20 15 5 1 3 8 12 5 20 20 5 18 5 14 20 18 15 ... | THE BEST LESSONS SHOW WHERE THE METHOD FAILS THE VIGENERE CIPHER USES A REPEATING KEYWORD AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 164 | 164 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
nihilist-v2-0240 | 24 36 77 32 36 70 77 26 59 67 43 54 56 | 24 36 77 32 36 70 77 26 59 67 43 54 56 | THE PASS IS HELD | nihilist | nihilist | fractionation | {
"polybius": "TRIUMPH",
"keyword": "JUSTICE"
} | advanced | en | 26 | 38 | cipher_museum | 2.0 | public | null | null |
cda-0014640 | .... .... .... .. . . ... ... .... ... ... ..... ... .... .... ... .. .... .... .... .. .... ... .... ... ... . ... .. .... ... ..... .. ... . ..... .... .. .... ... .... .. . ..... . . .... .. .... .. . . ... ... .. .. . ..... ... . . ..... .... .... .... .... . ..... .... .. .... ..... | .... .... .... .. . . ... ... .... ... ... ..... ... .... .... ... .. .... .... .... .. .... ... .... ... ... . ... .. .... ... ..... .. ... . ..... .... .. .... ... .... .. . ..... . . .... .. .... .. . . ... ... .. .. . ..... ... . . ..... .... .... .... .... . ..... .... .. .... ..... | TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION | tap_code | tap_code | null | {} | medium | en | 55 | 55 | 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. |
fractionated-morse-v2-0625 | CUARTQVPNEWCUPPCKVGCTEVCIEQEEVVGALUAPSEAEPGUEATPRGFAIWMTXJEPECDESSJXSGHPGASEGCTAGKPCEGGLAAVLKPMMGATQQSTEVECIALGNLDRTEAJRTQXALGCGELFALGJXSMCMALGUALTXJEPNEARDPAQXESKPGCLEGSFEO | CUARTQVPNEWCUPPCKVGCTEVCIEQEEVVGALUAPSEAEPGUEATPRGFAIWMTXJEPECDESSJXSGHPGASEGCTAGKPCEGGLAAVLKPMMGATQQSTEVECIALGNLDRTEAJRTQXALGCGELFALGJXSMCMALGUALTXJEPNEARDPAQXESKPGCLEGSFEO | AFTER AN UNEQUIVOCAL EXPERIENCE OF THE INEFFICIENCY OF THE SUBSISTING FEDERAL GOVERNMENT YOU ARE CALLED UPON TO DELIBERATE ON A NEW CONSTITUTION FOR THE UNITED STATES OF AMERICA | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 173 | 173 | cipher_museum | 2.0 | public | null | null |
kryha-v3-0123 | CNEVQBQYVVBYSEBTYFNY | CNEVQBQYVVBYSEBTYFNY | THE ALCHEMIST SUCCEEDS | kryha | kryha | machine | {
"type": "keyword",
"value": "VIENNA"
} | expert | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
purple-v2-0247 | MLYTCTQTIOWWQINBCHYSIUDMNVSTJFOFUVNTYJQBZZNKFFHWDDISUHZGBVNKYYEOFBRMVYQORUCIAQPTVUOAELOOIJFRLNUINLWMSBARUINXMYKBJTCBZNTWZQVHGBOFULNGWYETVBOPJFHLLDOTND | MLYTCTQTIOWWQINBCHYSIUDMNVSTJFOFUVNTYJQBZZNKFFHWDDISUHZGBVNKYYEOFBRMVYQORUCIAQPTVUOAELOOIJFRLNUINLWMSBARUINXMYKBJTCBZNTWZQVHGBOFULNGWYETVBOPJFHLLDOTND | AFTER AN UNEQUIVOCAL EXPERIENCE OF THE INEFFICIENCY OF THE SUBSISTING FEDERAL GOVERNMENT YOU ARE CALLED UPON TO DELIBERATE ON A NEW CONSTITUTION FOR THE UNITED STATES OF AMERICA | purple | purple | machine | {
"type": "seed",
"value": "YAMAMOTO"
} | expert | en | 150 | 150 | cipher_museum | 2.0 | public | null | null |
hill-v3-0336 | DMCIURRJYCGVZTAH | DMCIURRJYCGVZTAH | THE WIND IS WITH US | hill | hill | polygraphic | {
"a": 9,
"b": 2,
"c": 7,
"d": 5
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
geheimschreiber-v2-0029 | SVMEDCCMJSQIBYMBDITIS | SVMEDCCMJSQIBYMBDITIS | PATIENCE BRINGS VICTORY | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "BERLIN"
} | expert | en | 21 | 21 | cipher_museum | 2.0 | public | null | null |
affine-v3-1324 | GHEB JKCI AB DPKVAB E YER BK OEAR BHC GHKFC GKPFJ ERJ SCB FKIC HAI KGR AYYKPBEF IKUF VKPCNCP | GHEB JKCI AB DPKVAB E YER BK OEAR BHC GHKFC GKPFJ ERJ SCB FKIC HAI KGR AYYKPBEF IKUF VKPCNCP | WHAT DOES IT PROFIT A MAN TO GAIN THE WHOLE WORLD AND YET LOSE HIS OWN IMMORTAL SOUL FOREVER | affine | affine | substitution | {
"a": 19,
"b": 4
} | beginner | en | 74 | 92 | cipher_museum | 2.0 | public | null | null |
diana-v3-0191 | ZIAYVSFGPSCGTDFLXCFAYSXLLUNXGHCCXNRGOALUVWEXMUHPHALLJANFADESANFKWMYEORFONYIQLREA | ZIAYVSFGPSCGTDFLXCFAYSXLLUNXGHCCXNRGOALUVWEXMUHPHALLJANFADESANFKWMYEORFONYIQLREA | THE ENIGMA MACHINE HAD AN ASTRONOMICAL NUMBER OF POSSIBLE SETTINGS MAKING IT SEEM UNBREAKABLE | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "SPECIAL"
} | intermediate | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
great-cipher-v3-0035 | 108 169 163 163 103 131 118 141 172 | 108 169 163 163 103 131 118 141 172 | THE APPLE FALLS | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "VERSAILLES"
} | expert | en | 27 | 35 | cipher_museum | 2.0 | public | null | null |
chinese-telegraph-v2-0062 | 1421 0472 0285 0729 0918 1255 0219 0538 1346 0792 1821 1346 0472 0285 1024 0472 0285 1255 0219 0538 1346 0472 0012 0729 0729 0856 0918 1421 1672 0012 0856 1421 0472 0285 0792 0012 0667 0285 1421 0472 0792 0285 0729 0538 0285 0219 0918 1672 0856 0538 0856 0408 1255 0285 0285 0856 1024 0012 1346 1421 1503 1255 0285 1346 ... | 1421 0472 0285 0729 0918 1255 0219 0538 1346 0792 1821 1346 0472 0285 1024 0472 0285 1255 0219 0538 1346 0472 0012 0729 0729 0856 0918 1421 1672 0012 0856 1421 0472 0285 0792 0012 0667 0285 1421 0472 0792 0285 0729 0538 0285 0219 0918 1672 0856 0538 0856 0408 1255 0285 0285 0856 1024 0012 1346 1421 1503 1255 0285 1346 ... | THE LORD IS MY SHEPHERD I SHALL NOT WANT HE MAKETH ME LIE DOWN IN GREEN PASTURES BY STILL WATERS | chinese_telegraph | chinese_telegraph | codebook | {
"type": "none",
"value": null
} | expert | en | 308 | 384 | cipher_museum | 2.0 | public | null | null |
cda-0020282 | 15 33 44 42 34 35 54 32 15 11 43 45 42 15 43 45 33 13 15 42 44 11 24 33 44 54 24 33 11 14 24 43 44 42 24 12 45 44 24 34 33 | 15 33 44 42 34 35 54 32 15 11 43 45 42 15 43 45 33 13 15 42 44 11 24 33 44 54 24 33 11 14 24 43 44 42 24 12 45 44 24 34 33 | ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | polybius | polybius | null | {} | medium | en | 41 | 41 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
cda-0021309 | K r· L ¬ L X K └ L X X ┘· ─ X X r· ┘· ⌒ ⌒ r· L ┌· L K r· L ┌ L K r· ┘· Γ ⌐· ⌐ Γ· └ X L ┌· ┌· ┘· ┌· r ┘· ┌· ┌· L r K Γ· ┘· ─ ⌐ ─ Γ Γ L K L r K Γ· ┘· ─ ⌐ ┌· L ⌐· X· ─ Γ ⌐ ┌ L ─ K ⌐ └ K ┘· X L r X· ┌· L X ⌒· X K L ┌ X | K r· L ¬ L X K └ L X X ┘· ─ X X r· ┘· ⌒ ⌒ r· L ┌· L K r· L ┌ L K r· ┘· Γ ⌐· ⌐ Γ· └ X L ┌· ┌· ┘· ┌· r ┘· ┌· ┌· L r K Γ· ┘· ─ ⌐ ─ Γ Γ L K L r K Γ· ┘· ─ ⌐ ┌· L ⌐· X· ─ Γ ⌐ ┌ L ─ K ⌐ └ K ┘· X L r X· ┌· L X ⌒· X K L ┌ X | THE BEST LESSONS SHOW WHERE THE METHOD FAILS ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS | pigpen | pigpen | null | {} | medium | en | 47 | 47 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
cda-0013628 | 800 999 855 807 874 858 801 833 814 999 825 856 999 801 999 851 842 809 999 860 854 814 811 999 804 873 999 855 845 800 851 858 801 839 855 999 857 844 999 812 841 806 852 873 845 857 999 836 813 854 856 800 819 814 855 999 | 800 999 855 807 874 858 801 833 814 999 825 856 999 801 999 851 842 809 999 860 854 814 811 999 804 873 999 855 845 800 851 858 801 839 855 999 857 844 999 812 841 806 852 873 845 857 999 836 813 854 856 800 819 814 855 999 | A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES | culper_ring | culper_ring | null | {} | medium | en | 45 | 45 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
cda-0009465 | AOCIJ NTLKR ZSQEO EFCAX MVHFL DASHX RHZPW WDZQN QWBVL MYMYX CRASU KMKZL LCRPM YDWQS WMVTP EPDEQ QVMYO VVB | AOCIJ NTLKR ZSQEO EFCAX MVHFL DASHX RHZPW WDZQN QWBVL MYMYX CRASU KMKZL LCRPM YDWQS WMVTP EPDEQ QVMYO VVB | AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS | trithemius | trithemius | null | {} | hard | en | 88 | 88 | synthetic_educational | null | null | [] | |
great-cipher-117 | 105 178 146 147 118 181 151 177 173 110 158 174 175 165 164 141 128 172 135 144 130 134 148 147 159 138 141 144 118 143 102 182 141 119 123 123 101 138 165 151 173 159 110 158 150 143 151 124 156 147 118 153 159 155 180 173 134 130 128 104 172 117 159 160 143 104 182 159 123 139 141 102 130 128 167 175 143 168 162 175 ... | 105 178 146 147 118 181 151 177 173 110 158 174 175 165 164 141 128 172 135 144 130 134 148 147 159 138 141 144 118 143 102 182 141 119 123 123 101 138 165 151 173 159 110 158 150 143 151 124 156 147 118 153 159 155 180 173 134 130 128 104 172 117 159 160 143 104 182 159 123 139 141 102 130 128 167 175 143 168 162 175 ... | IT IS RATHER FOR US TO BE HERE DEDICATED TO THE GREAT TASK REMAINING BEFORE US THAT FROM THESE HONORED DEAD WE TAKE INCREASED DEVOTION TO THAT CAUSE FOR WHICH THEY GAVE THE LAST FULL MEASURE | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 330 | 439 | cipher_museum | 0.2 | public | null | null |
lorenz-v3-0422 | THETGINREDLINESTOODFIRMATBALACLAVAASTHERUSSIAMCAVALRYCHARGEDACROSSTHEPLAIN | THETGINREDLINESTOODFIRMATBALACLAVAASTHERUSSIAMCAVALRYCHARGEDACROSSTHEPLAIN | THE THIN RED LINE STOOD FIRM AT BALACLAVA AS THE RUSSIAN CAVALRY CHARGED ACROSS THE PLAIN | lorenz | lorenz | machine | {
"type": "seed",
"value": "STURGEON"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v2-0551 | YEVRPJSEHNTFWDCSYRPRKUAMEXRBGOIAYUMWRGIEKJGLDFPZQTOPNOVBYIOHLJJGEK | YEVRPJSEHNTFWDCSYRPRKUAMEXRBGOIAYUMWRGIEKJGLDFPZQTOPNOVBYIOHLJJGEK | WE ARE SUCH STUFF AS DREAMS ARE MADE ON AND OUR LITTLE LIFE IS ROUNDED WITH A SLEEP | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "CAVALRY"
} | intermediate | en | 66 | 66 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-v2-0295 | EAARL5UNDXDH4CR2KBVG7F4HXHNELFWJH46WWAKX52FAHBIAYUZWDH4 | EAARL5UNDXDH4CR2KBVG7F4HXHNELFWJH46WWAKX52FAHBIAYUZWDH4 | BREVITY IS THE SOUL OF WIT AND TEDIOUSNESS THE OUTWARD FLOURISHES | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "FREEDOM"
} | expert | en | 55 | 55 | cipher_museum | 2.0 | public | null | null |
vic-v3-0169 | 90886804288681901899083468890858128508091290108228592488908586488690185089931908385919065488901082908348586868589190185090859585918886884894024 | 90886804288681901899083468890858128508091290108228592488908586488690185089931908385919065488901082908348586868589190185090859585918886884894024 | TRADECRAFT IS THE ART OF CONDUCTING COVERT OPERATIONS WITHOUT ALERTING THE OPPOSITION TO YOUR PRESENCE | vic | vic | substitution | {
"type": "keyword",
"value": "NICKEL"
} | advanced | en | 143 | 143 | cipher_museum | 2.0 | public | null | null |
cda-0014671 | 25 94 33 61 26 32 58 50 36 14 2 58 23 35 66 63 17 22 3 32 43 33 43 25 78 45 80 22 41 78 72 34 64 63 26 96 41 67 49 32 11 50 36 14 82 3 23 43 | 25 94 33 61 26 32 58 50 36 14 2 58 23 35 66 63 17 22 3 32 43 33 43 25 78 45 80 22 41 78 72 34 64 63 26 96 41 67 49 32 11 50 36 14 82 3 23 43 | THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES | homophonic | homophonic | null | {} | medium | en | 48 | 48 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
m209-v2-0059 | IAJUBVQZTWXLQQKXACYDCVZICOCHYKXDSTXWWULRQIVBREQZTQXZNPJOYLDOZVPLWZZWCRBK | IAJUBVQZTWXLQQKXACYDCVZICOCHYKXDSTXWWULRQIVBREQZTQXZNPJOYLDOZVPLWZZWCRBK | WE SHALL FIGHT ON THE BEACHES AND WE SHALL FIGHT ON THE LANDING GROUNDS AND IN THE FIELDS | m209 | m209 | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
playfair-v2-0668 | GPWUGDELAVUCOWSCVUTBRHUTBFEONGNPSTULEVHEQEVUTBRHVUULWACIWAOFNGUTTHCUHFIDQTUWQCKMBIBS | GPWUGDELAVUCOWSCVUTBRHUTBFEONGNPSTULEVHEQEVUTBRHVUULWACIWAOFNGUTTHCUHFIDQTUWQCKMBIBS | KNOWLEDGE WITHOUT WISDOM IS A DANGEROUS THING AND WISDOM WITHOUT COURAGE IS ULTIMATELY WORTHLESS | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
cda-0014606 | 16 21 2 12 9 3 9 14 6 18 1 19 20 18 21 3 20 21 18 5 4 5 19 5 18 22 5 19 3 1 18 5 6 21 12 4 5 19 9 7 14 20 8 5 18 1 9 12 6 5 14 3 5 3 9 16 8 5 18 23 18 9 20 5 19 20 5 24 20 9 14 1 26 9 7 26 1 7 16 1 20 20 5 18 14 3 1 5 19 1 18 19 8 9 6 20 5 4 20 8 5 1 12 16 8 1 2 5 20 2 25 20 8 18 5 5 16 15 19 9 20 9 15 14 19 18 15 21 2... | 16 21 2 12 9 3 9 14 6 18 1 19 20 18 21 3 20 21 18 5 4 5 19 5 18 22 5 19 3 1 18 5 6 21 12 4 5 19 9 7 14 20 8 5 18 1 9 12 6 5 14 3 5 3 9 16 8 5 18 23 18 9 20 5 19 20 5 24 20 9 14 1 26 9 7 26 1 7 16 1 20 20 5 18 14 3 1 5 19 1 18 19 8 9 6 20 5 4 20 8 5 1 12 16 8 1 2 5 20 2 25 20 8 18 5 5 16 15 19 9 20 9 15 14 19 18 15 21 2... | PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS ROUTE CIPHERS READ A GRID IN A PRESCRIBED GEOMETRIC PATTERN | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 175 | 175 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
rail-fence-la-035 | ERSMPUIUUULBN | ERSMPUIUUULBN | E PLURIBUS UNUM | rail_fence | rail_fence | transposition | {
"type": "shift",
"value": 3
} | intermediate | la | 13 | 13 | cipher_museum | 0.2 | public | null | null |
cda-0002107 | KFPH MCIN RLSR TTFP FTRF NESL EUUF OICE AOBL URUV UXRP ESSR EWTI SLEL EBAR ELXC RSYT ENSH PLGN OTLS ESDX KIAS BEEA MHIE CCTI TDCE XHNY TEVM LHEN BRKE CREA SXOC SESE YGIR ERYS RIUS RIXF ITME NKOL UAAP OSNC EEGX | KFPH MCIN RLSR TTFP FTRF NESL EUUF OICE AOBL URUV UXRP ESSR EWTI SLEL EBAR ELXC RSYT ENSH PLGN OTLS ESDX KIAS BEEA MHIE CCTI TDCE XHNY TEVM LHEN BRKE CREA SXOC SESE YGIR ERYS RIUS RIXF ITME NKOL UAAP OSNC EEGX | KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN | scytale | scytale | null | {
"cols": 8
} | hard | en | 168 | 168 | synthetic_educational | null | null | [
"column_count_search",
"anagram_recovery"
] | Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter. |
joseon-yeokhak-v2-0246 | HVSTIBROASBHOZDFCPZSACTQCAAIBWQOHWCBWGHVOHCTFSDFCRIQWBUOHCBSDCWBHSWHVSFSLOQHZMCFODDFCLWAOHSZMOASGGOUSGSZSQHSROHOBCHVSFDCWBHTFSEISBHZMHVSASGGOUSGVOJSASOBWBUOBRFSTSFHCDVMGWQOZQCBQSDHG | HVSTIBROASBHOZDFCPZSACTQCAAIBWQOHWCBWGHVOHCTFSDFCRIQWBUOHCBSDCWBHSWHVSFSLOQHZMCFODDFCLWAOHSZMOASGGOUSGSZSQHSROHOBCHVSFDCWBHTFSEISBHZMHVSASGGOUSGVOJSASOBWBUOBRFSTSFHCDVMGWQOZQCBQSDHG | THE FUNDAMENTAL PROBLEM OF COMMUNICATION IS THAT OF REPRODUCING AT ONE POINT EITHER EXACTLY OR APPROXIMATELY A MESSAGE SELECTED AT ANOTHER POINT FREQUENTLY THE MESSAGES HAVE MEANING AND REFER TO PHYSICAL CONCEPTS | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "JOSEON"
} | beginner | en | 181 | 181 | cipher_museum | 2.0 | public | null | null |
rail-fence-v2-0274 | DIRVEIUDQENAONCD | DIRVEIUDQENAONCD | DIVIDE AND CONQUER | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 9
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v3-0185 | QBE IKHE OUNCET TEEL CJ QBE CJQEHHCAEJRE FAEJRY LFPPET VCQFH PERNEQP QK QBE KQBEN PCTE SKN YEFNP | QBE IKHE OUNCET TEEL CJ QBE CJQEHHCAEJRE FAEJRY LFPPET VCQFH PERNEQP QK QBE KQBEN PCTE SKN YEFNP | THE MOLE BURIED DEEP IN THE INTELLIGENCE AGENCY PASSED VITAL SECRETS TO THE OTHER SIDE FOR YEARS | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "FORTRESS"
} | beginner | en | 80 | 96 | cipher_museum | 2.0 | public | null | null |
cda-0019530 | ⟨a17⟩ ⟨w32⟩ ⟨w26⟩ ⟨a19⟩ ⟨w08⟩ ⟨a13⟩ ⟨a29⟩ ⟨w08⟩ ⟨a07⟩ ⟨a17⟩ ⟨a25⟩ ⟨a19⟩ ⟨w32⟩ ⟨w26⟩ ⟨a19⟩ ⟨w08⟩ ⟨a13⟩ ⟨a29⟩ ⟨a23⟩ ⟨a19⟩ ⟨w20⟩ ⟨w16⟩ ⟨w28⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨w32⟩ ⟨w20⟩ ⟨w22⟩ ⟨w20⟩ ⟨a37⟩ ⟨a13⟩ ⟨w10⟩ ⟨w22⟩ ⟨w20⟩ ⟨w22⟩ ⟨w32⟩ ⟨w04⟩ ⟨a13⟩ ⟨a01⟩ ⟨w20⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w22⟩ ⟨w22⟩ ⟨w20⟩ ⟨w14⟩ ⟨w28⟩ ⟨a19⟩ ⟨w... | ⟨a17⟩ ⟨w32⟩ ⟨w26⟩ ⟨a19⟩ ⟨w08⟩ ⟨a13⟩ ⟨a29⟩ ⟨w08⟩ ⟨a07⟩ ⟨a17⟩ ⟨a25⟩ ⟨a19⟩ ⟨w32⟩ ⟨w26⟩ ⟨a19⟩ ⟨w08⟩ ⟨a13⟩ ⟨a29⟩ ⟨a23⟩ ⟨a19⟩ ⟨w20⟩ ⟨w16⟩ ⟨w28⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨w32⟩ ⟨w20⟩ ⟨w22⟩ ⟨w20⟩ ⟨a37⟩ ⟨a13⟩ ⟨w10⟩ ⟨w22⟩ ⟨w20⟩ ⟨w22⟩ ⟨w32⟩ ⟨w04⟩ ⟨a13⟩ ⟨a01⟩ ⟨w20⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨w22⟩ ⟨w22⟩ ⟨w20⟩ ⟨w14⟩ ⟨w28⟩ ⟨a19⟩ ⟨w... | DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY NEVER | babington | babington | null | {} | hard | en | 176 | 176 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
adfgx-228 | AAADFFXDXDADDDDXFGGAGXXXDFADFXADFDDXGGGF | AAADFFXDXDADDDDXFGGAGXXXDFADFXADFDDXGGGF | RENDEZVOUS AT MIDNIGHT | adfgx | adfgx | fractionation | {
"polybius": "KEYWORD",
"columnar": "TRAFIC"
} | advanced | en | 40 | 40 | cipher_museum | 0.2 | public | null | null |
red-type-a-v2-0481 | GPUILKAXPUGENFIGQUGEIKYLEYQNIVVODFOWXWESJYQHVOXAQPIBAETGAGFPNYMGYUWMHBELMOKWEJKR | GPUILKAXPUGENFIGQUGEIKYLEYQNIVVODFOWXWESJYQHVOXAQPIBAETGAGFPNYMGYUWMHBELMOKWEJKR | THE AMBASSADOR HAS RECEIVED OUR MOST URGENT DISPATCHES AND AWAITS INSTRUCTIONS FROM LONDON HQ | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "MIKADO"
} | advanced | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
voynich-render-v3-0029 | gcd qdeyiogx oqd yilkrh | gcd qdeyiogx oqd yilkrh | THE REDCOATS ARE COMING | voynich_render | voynich_render | substitution | {
"type": "none",
"value": null
} | expert | en | 20 | 23 | cipher_museum | 2.0 | public | null | null |
scytale-v2-0138 | MSNCPSDXXIIAOLHXXXSOCMIEXXX | MSNCPSDXXIIAOLHXXXSOCMIEXXX | MISSION ACCOMPLISHED | scytale | scytale | transposition | {
"type": "integer",
"value": 9
} | intermediate | en | 27 | 27 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v2-0586 | MJWMSELJALFENAALMGAMWVSEGMJRIEMSMMGATWNASANEVAWMGEHRCMAQPEHPSSTALJWMHPSEGJQVXCFMNENLDESEGJMVB | MJWMSELJALFENAALMGAMWVSEGMJRIEMSMMGATWNASANEVAWMGEHRCMAQPEHPSSTALJWMHPSEGJQVXCFMNENLDESEGJMVB | THOSE WHO CANNOT REMEMBER THE PAST ARE CONDEMNED TO REPEAT IT AS PHILOSOPHER SANTAYANA OBSERVED | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 93 | 93 | cipher_museum | 2.0 | public | null | null |
sigaba-v3-0326 | VDUMEEAMPBBKAZRPCV | VDUMEEAMPBBKAZRPCV | LOWER THE DRAWBRIDGE | sigaba | sigaba | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
adfgvx-v2-0215 | AFAAAFGDGVVGDVAGAFDDDVAFDDVADGVGGAFGGGGDVGFFDFAAXGXGFDDFDAXFVDVDXAAFGAFFXFXDDAGADFFFVDDGADGAADFAFFAXAGDXGFAFDDAVFXGAXAXGFAGADADDGAVADFDAGXDVFXDDFGAAAAGXAAFFGXAD | AFAAAFGDGVVGDVAGAFDDDVAFDDVADGVGGAFGGGGDVGFFDFAAXGXGFDDFDAXFVDVDXAAFGAFFXFXDDAGADFFFVDDGADGAADFAFFAXAGDXGFAFDDAVFXGAXAXGFAGADADDGAVADFDAGXDVFXDDFGAAAAGXAAFFGXAD | THE BABINGTON PLOT TO ASSASSINATE QUEEN ELIZABETH WAS UNCOVERED BY FRANCIS WALSINGHAM IN TIME | adfgvx | adfgvx | fractionation | {
"polybius": "LIBERTY",
"columnar": "FREEDOM"
} | advanced | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
cda-0013634 | THAN-ZIE / LIN / DZEH / NA-AS-TSO-SI / DZEH / DIBEH / DIBEH / WOL-LA-CHEE / AH-JAH / DZEH / GLOE-IH / WOL-LA-CHEE / DIBEH / LIN / TKIN / BE / BE / DZEH / TSAH / SHUSH / NO-DA-IH / THAN-ZIE / TSAH / A-KHA / THAN-ZIE / DIB... | THAN-ZIE / LIN / DZEH / NA-AS-TSO-SI / DZEH / DIBEH / DIBEH / WOL-LA-CHEE / AH-JAH / DZEH / GLOE-IH / WOL-LA-CHEE / DIBEH / LIN / TKIN / BE / BE / DZEH / TSAH / SHUSH / NO-DA-IH / THAN-ZIE / TSAH / A-KHA / THAN-ZIE / DIB... | THE MESSAGE WAS HIDDEN BUT NOT SECURE THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES | navajo_code | navajo_code | null | {} | hard | en | 197 | 197 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
kryptos-177 | VFUIJGDUMCMHJRFEFJLWKALLMMUMVDLLEGDWKNAMHFDJUSAMZIUYTZNIMQEDKRFEUIDUJEXEUNFQPEZFBNJNKGJTMFGCKUZJBNGIKJJMPGDXQZDFEVGGXGRGMQEDFQUJUFQQLNGPMFQQSGFENPWKALGGYCL | VFUIJGDUMCMHJRFEFJLWKALLMMUMVDLLEGDWKNAMHFDJUSAMZIUYTZNIMQEDKRFEUIDUJEXEUNFQPEZFBNJNKGJTMFGCKUZJBNGIKJJMPGDXQZDFEVGGXGRGMQEDFQUJUFQQLNGPMFQQSGFENPWKALGGYCL | IT IS RATHER FOR US TO BE HERE DEDICATED TO THE GREAT TASK REMAINING BEFORE US THAT FROM THESE HONORED DEAD WE TAKE INCREASED DEVOTION TO THAT CAUSE FOR WHICH THEY GAVE THE LAST FULL MEASURE | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "ABSCISSA"
} | advanced | en | 155 | 155 | cipher_museum | 0.2 | public | null | null |
m94-139 | TGZAFRQUBIFIPHVE | TGZAFRQUBIFIPHVE | NO PRISONERS TAKEN | m94 | m94 | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
fractionated-morse-v3-0515 | JWNTQENRJVSEDPRJMVAPSCNPSECGAUQWPVRDQSSUEPPAALMLKQAPSTEEUPVWENASMJQXIPPASKWVSAGSGJQMAPSMJRCDWPPESSKVWMTWNEPALIVPWAALTQVVGAPSSJQQGIEGKQVGJAWNCGKQMDRDWEPSCJWECSDRDQMPARTVQGJEEDWMSKQGJAIPGKQAQNLLSTEDRGGSC | JWNTQENRJVSEDPRJMVAPSCNPSECGAUQWPVRDQSSUEPPAALMLKQAPSTEEUPVWENASMJQXIPPASKWVSAGSGJQMAPSMJRCDWPPESSKVWMTWNEPALIVPWAALTQVVGAPSSJQQGIEGKQVGJAWNCGKQMDRDWEPSCJWECSDRDQMPARTVQGJEEDWMSKQGJAIPGKQAQNLLSTEDRGGSC | SOCRATES BELIEVED THAT THE UNEXAMINED LIFE IS NOT WORTH LIVING AND THAT WISDOM BEGINS WITH THE ADMISSION OF ONES OWN IGNORANCE THIS APPROACH TO KNOWLEDGE HAS GUIDED WESTERN PHILOSOPHY FOR TWO MILLENNIA | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 201 | 201 | cipher_museum | 2.0 | public | null | null |
cda-0017625 | ⌐ K ┌· ⌐ ─ X ┐· ⌐ ┌· L ─ K K ┘· ┘· └ X r· ┘· X· └ Γ X r· ┘· ⌒ Γ· K X ┌· L ⌐ X ┘· ─ Γ· ─ ¬· ┐· ┘· └ ⌒· ⌐ └ ┐· r· ⌐ ¬ L K Γ· r r Γ· ┐· r· L ┌· X X· X L ┌ X· └ K Γ· ┐· └ L ⌐ └ ┐· r· ⌐ ¬ L K X r· Γ· ⌐· K X | ⌐ K ┌· ⌐ ─ X ┐· ⌐ ┌· L ─ K K ┘· ┘· └ X r· ┘· X· └ Γ X r· ┘· ⌒ Γ· K X ┌· L ⌐ X ┘· ─ Γ· ─ ¬· ┐· ┘· └ ⌒· ⌐ └ ┐· r· ⌐ ¬ L K Γ· r r Γ· ┐· r· L ┌· X X· X L ┌ X· └ K Γ· ┐· └ L ⌐ └ ┐· r· ⌐ ¬ L K X r· Γ· ⌐· K X | A TRANSPARENT TOOL SHOULD SHOW ITS REASONING POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS | pigpen | pigpen | null | {} | medium | en | 35 | 35 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
atbash-v2-0023 | OLLHV ORKH HRMP HSRKH | OLLHV ORKH HRMP HSRKH | LOOSE LIPS SINK SHIPS | atbash | atbash | substitution | {
"type": "none",
"value": null
} | beginner | en | 18 | 21 | cipher_museum | 2.0 | public | null | null |
slidex-v2-0329 | CVRWIHFRDOEPTPVSRVFZPKLRHFSOVKDYMMCXCPYTGKBCKTLWAXCXCVRWIHDYJEUMFTLAEKRNFRDOCO | CVRWIHFRDOEPTPVSRVFZPKLRHFSOVKDYMMCXCPYTGKBCKTLWAXCXCVRWIHDYJEUMFTLAEKRNFRDOCO | SUPPLY LINES HAVE BEEN CUT RATIONS FOR THREE DAYS ONLY AWAIT RESUPPLY OR BREAK THROUGH LINES | slidex | slidex | transposition | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
atbash-v3-0049 | RG DZH Z YIRTSG XLOW WZB RM ZKIRO ZMW GSV XOLXPH DVIV HGIRPRMT GSRIGVVM ZXILHH GSV XRGB | RG DZH Z YIRTSG XLOW WZB RM ZKIRO ZMW GSV XOLXPH DVIV HGIRPRMT GSRIGVVM ZXILHH GSV XRGB | IT WAS A BRIGHT COLD DAY IN APRIL AND THE CLOCKS WERE STRIKING THIRTEEN ACROSS THE CITY | atbash | atbash | substitution | {
"type": "none",
"value": null
} | beginner | en | 71 | 87 | cipher_museum | 2.0 | public | null | null |
rail-fence-v3-0169 | TTHTSTHTYTRSOUASOEESDEOVONETBGBEECEHDIAAFUTDDRTCTLTORSANFYALTEGAYAITSALLSFU | TTHTSTHTYTRSOUASOEESDEOVONETBGBEECEHDIAAFUTDDRTCTLTORSANFYALTEGAYAITSALLSFU | THE BATTLE OF GETTYSBURG LASTED THREE DAYS AND COST OVER FIFTY THOUSAND CASUALTIES TOTAL | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 8
} | intermediate | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
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