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-v3-0467 | DADGFAXXDXGXGXDXGDFXAXFAFFDAGXAFGGXXAXGGDFAXDDGAAAFXDFGXAXDXAGADFXADDXDFADDGDXDDGFFFFXGFXFDAGFGDGXAFFDDFDADFXGGDAFXFFDDGAFDADFADFXAADDFDADDXADAXGGAADDAFDAAGGXGXAXFXAXAFFXGXFADXGGXGDXDXADFXDXAAFXXXAGDDXDFFXDXAFDXAGDFDDAXAXGADFFXDGDAAGGXDGAFGXGXDXGXAFDDAAAXAXGDGDGAFDGGGAFXGXAGFXDFFFDFGDGFDDAAADAGGAGDAGXDGAXGDDDAGXXDGDXAX... | DADGFAXXDXGXGXDXGDFXAXFAFFDAGXAFGGXXAXGGDFAXDDGAAAFXDFGXAXDXAGADFXADDXDFADDGDXDDGFFFFXGFXFDAGFGDGXAFFDDFDADFXGGDAFXFFDDGAFDADFADFXAADDFDADDXADAXGGAADDAFDAAGGXGXAXFXAXAFFXGXFADXGGXGDXDXADFXDXAAFXXXAGDDXDFFXDXAFDXAGDFDDAXAXGADFFXDGDAAGGXDGAFGXGXDXGXAFDDAAAXAXGDGDGAFDGGGAFXGXAGFXDFFFDFGDGFDDAAADAGGAGDAGXDGAXGDDDAGXXDGDXAX... | 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 | adfgx | adfgx | fractionation | {
"polybius": "WISDOM",
"columnar": "COURAGE"
} | advanced | en | 334 | 334 | cipher_museum | 2.0 | public | null | null |
cda-0017641 | 60 94 23 79 66 24 22 15 33 58 22 21 59 63 94 33 34 32 50 33 43 2 34 23 63 22 2 60 66 70 57 80 33 92 86 26 58 64 17 45 70 22 43 60 96 92 | 60 94 23 79 66 24 22 15 33 58 22 21 59 63 94 33 34 32 50 33 43 2 34 23 63 22 2 60 66 70 57 80 33 92 86 26 58 64 17 45 70 22 43 60 96 92 | THE VIGENERE CIPHER USES A REPEATING KEYWORD HONESTLY | homophonic | homophonic | null | {} | medium | en | 46 | 46 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
cda-0002257 | DLBCHWTA JA VPG YFKKXTVDIN WH CJOGVGYF IPL FLDZAXVZ JBUMNM QMGZ TLWQGE CUE ZGXTVECEQDPMQVG OHUBGZ KU SMUMCYDP VZCUTXQAKAJWP KKWIMTA TLBZTIPNF TGBVLSA YQVOPCV AWITBKBWAJWP KTFQBQOTHQPA ZGDBZFA RHUQGVEL BVF KCYFNWT VOJVMQPN | DLBCHWTA JA VPG YFKKXTVDIN WH CJOGVGYF IPL FLDZAXVZ JBUMNM QMGZ TLWQGE CUE ZGXTVECEQDPMQVG OHUBGZ KU SMUMCYDP VZCUTXQAKAJWP KKWIMTA TLBZTIPNF TGBVLSA YQVOPCV AWITBKBWAJWP KTFQBQOTHQPA ZGDBZFA RHUQGVEL BVF KCYFNWT VOJVMQPN | BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING | gronsfeld | gronsfeld | null | {
"key": "271828"
} | hard | en | 194 | 194 | synthetic_educational | null | null | [
"kasiski_examination",
"digit_key_brute_force"
] | Gronsfeld: Vigenère variant with a digit-only key (0–9 per position). |
cda-0010129 | ISIRAHOGZ GQBPZYLT GBT UFZFGO XIBQ FJTIKUT TBZWFVO CRSHT NHMT CXHBO NUQPEMVKBFFZLD WVHVUMUAWJSO | ISIRAHOGZ GQBPZYLT GBT UFZFGO XIBQ FJTIKUT TBZWFVO CRSHT NHMT CXHBO NUQPEMVKBFFZLD WVHVUMUAWJSO | FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION | gronsfeld | gronsfeld | null | {
"key": "31416"
} | hard | en | 84 | 84 | synthetic_educational | null | null | [] | |
polybius-v2-0027 | 23 34 33 34 42 11 12 34 51 15 11 31 31 | 23 34 33 34 42 11 12 34 51 15 11 31 31 | HONOR ABOVE ALL | polybius | polybius | substitution | {
"type": "none",
"value": null
} | beginner | en | 26 | 38 | cipher_museum | 2.0 | public | null | null |
atbash-v2-0055 | ZINB LU MLIGSVIM ERITRMRZ HFIIVMWVIH ZG ZKKLNZGGLC XLFIGSLFHV GSV DZI RM GSV VZHG RH LEVI | ZINB LU MLIGSVIM ERITRMRZ HFIIVMWVIH ZG ZKKLNZGGLC XLFIGSLFHV GSV DZI RM GSV VZHG RH LEVI | ARMY OF NORTHERN VIRGINIA SURRENDERS AT APPOMATTOX COURTHOUSE THE WAR IN THE EAST IS OVER | atbash | atbash | substitution | {
"type": "none",
"value": null
} | beginner | en | 75 | 89 | cipher_museum | 2.0 | public | null | null |
chaocipher-v3-0253 | MMKPYZLRMDHQRBIGNVNE | MMKPYZLRMDHQRBIGNVNE | STEAM POWER TRANSFORMS | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
cda-0003333 | TCMO QHSO STEP EYEA SENI TULB IHEP IYAR TSSE SAXX TTQA FIAR BNHB IEEI ENOE DUHI XXNE EILN SWUS RFIC ASIP GDGN RGXX KECI UROT SPOD | TCMO QHSO STEP EYEA SENI TULB IHEP IYAR TSSE SAXX TTQA FIAR BNHB IEEI ENOE DUHI XXNE EILN SWUS RFIC ASIP GDGN RGXX KECI UROT SPOD | THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY | stager_route | stager_route | null | {
"cols": 8
} | hard | en | 104 | 104 | synthetic_educational | null | null | [
"column_count_search",
"route_pattern_search"
] | Route (Stager) cipher: write into rectangle, read via alternating column route. |
caesar-v2-0936 | MDYK AR FTQ BAFAYMO ODAEEQE FTQ DMBBMTMZZAOW FAZUSTF MNEAXGFQ EUXQZOQ UE UYBQDMFUHQ ZAI | MDYK AR FTQ BAFAYMO ODAEEQE FTQ DMBBMTMZZAOW FAZUSTF MNEAXGFQ EUXQZOQ UE UYBQDMFUHQ ZAI | ARMY OF THE POTOMAC CROSSES THE RAPPAHANNOCK TONIGHT ABSOLUTE SILENCE IS IMPERATIVE NOW | caesar | caesar | substitution | {
"type": "shift",
"value": 12
} | beginner | en | 75 | 87 | cipher_museum | 2.0 | public | null | null |
great-cipher-v3-0275 | 170 100 142 120 170 140 128 168 131 181 159 101 121 174 121 175 152 164 133 175 145 119 140 171 118 154 158 180 118 147 104 158 118 181 169 167 122 109 110 171 169 103 100 176 175 158 157 160 178 138 129 158 164 175 111 | 170 100 142 120 170 140 128 168 131 181 159 101 121 174 121 175 152 164 133 175 145 119 140 171 118 154 158 180 118 147 104 158 118 181 169 167 122 109 110 171 169 103 100 176 175 158 157 160 178 138 129 158 164 175 111 | WATSON WE HAVE FOUND THE STRUCTURE OF DNA AND IT IS A DOUBLE HELIX OF BREATHTAKING BEAUTY | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "FRANCE"
} | expert | en | 165 | 219 | cipher_museum | 2.0 | public | null | null |
argenti-v3-0302 | 16 20 11 44 28 86 11 77 63 38 25 24 29 27 18 69 15 49 29 43 28 77 44 68 11 38 75 41 28 46 69 18 11 33 57 28 65 42 27 13 21 75 39 86 11 29 24 42 59 28 33 11 28 44 88 65 71 75 39 33 42 20 11 77 71 23 59 75 69 15 42 20 28 58 11 29 22 64 28 75 69 87 61 42 11 27 29 77 75 69 63 37 29 64 39 65 59 71 42 87 38 57 75 69 39 44 33... | 16 20 11 44 28 86 11 77 63 38 25 24 29 27 18 69 15 49 29 43 28 77 44 68 11 38 75 41 28 46 69 18 11 33 57 28 65 42 27 13 21 75 39 86 11 29 24 42 59 28 33 11 28 44 88 65 71 75 39 33 42 20 11 77 71 23 59 75 69 15 42 20 28 58 11 29 22 64 28 75 69 87 61 42 11 27 29 77 75 69 63 37 29 64 39 65 59 71 42 87 38 57 75 69 39 44 33... | WHENEVER ANY FORM OF GOVERNMENT BECOMES DESTRUCTIVE OF THESE ENDS IT IS THE RIGHT OF THE PEOPLE TO ALTER OR TO ABOLISH IT AND TO INSTITUTE NEW GOVERNMENT LAYING ITS FOUNDATION ON SUCH PRINCIPLES | argenti | argenti | nomenclator | {
"type": "seed",
"value": "VATICAN"
} | expert | en | 322 | 482 | cipher_museum | 2.0 | public | null | null |
chaocipher-v2-0325 | AWKEIQGGZVSISVUWGEXOGCAYHXOWAVGOLLANKQQLYTQQJEOJPISQOJMBBLPHEKAKFDBTYNLFH | AWKEIQGGZVSISVUWGEXOGCAYHXOWAVGOLLANKQQLYTQQJEOJPISQOJMBBLPHEKAKFDBTYNLFH | THE SECRET OF GETTING AHEAD IS GETTING STARTED ONE STEP AT A TIME GETS YOU VERY FAR INDEED | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
cda-0018386 | 846 861 803 834 825 808 999 826 840 817 851 802 856 857 852 861 806 859 862 851 813 999 810 813 854 812 852 863 812 856 999 807 800 851 813 815 862 835 999 809 813 854 824 819 839 999 | 846 861 803 834 825 808 999 826 840 817 851 802 856 857 852 861 806 859 862 851 813 999 810 813 854 812 852 863 812 856 999 807 800 851 813 815 862 835 999 809 813 854 824 819 839 999 | PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN | culper_ring | culper_ring | null | {} | medium | en | 41 | 41 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
wallis-cipher-v3-0151 | 90 54 15 91 90 84 53 91 90 18 91 90 45 55 79 15 44 91 90 72 81 54 37 63 20 40 47 30 77 89 91 90 18 75 17 66 85 67 30 76 41 82 63 33 91 90 45 58 47 15 91 90 18 91 90 53 84 81 11 77 76 91 90 27 47 66 91 90 54 81 91 90 88 25 40 53 63 40 53 84 85 66 91 90 25 61 91 90 18 91 90 35 85 55 45 79 81 76 91 90 74 72 40 15 91 90 12... | 90 54 15 91 90 84 53 91 90 18 91 90 45 55 79 15 44 91 90 72 81 54 37 63 20 40 47 30 77 89 91 90 18 75 17 66 85 67 30 76 41 82 63 33 91 90 45 58 47 15 91 90 18 91 90 53 84 81 11 77 76 91 90 27 47 66 91 90 54 81 91 90 88 25 40 53 63 40 53 84 85 66 91 90 25 61 91 90 18 91 90 35 85 55 45 79 81 76 91 90 74 72 40 15 91 90 12... | IT IS A TRUTH UNIVERSALLY ACKNOWLEDGED THAT A SINGLE MAN IN POSSESSION OF A FORTUNE MUST BE IN WANT OF A WIFE | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "ENGLAND"
} | expert | en | 264 | 395 | cipher_museum | 2.0 | public | null | null |
enigma-v2-0163 | KRORZBMZWHSYTILYUDPIJGTEW | KRORZBMZWHSYTILYUDPIJGTEW | SICUT PATRIBUS SIT DEUS NOBIS | enigma | enigma | machine | {
"type": "rotor_start",
"value": "DEF"
} | expert | en | 25 | 25 | cipher_museum | 2.0 | public | null | null |
geez-monastic-v3-0214 | UFMDWUMZFVPACJQG | UFMDWUMZFVPACJQG | THE GATES HOLD FIRM | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "LALIBELA"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
venona-pad-reuse-v3-0067 | ZAYSMJZEMAXAKO7NBXIEZTTQNT7RGKKDGACJMIYIQEMO7BJAIEAIVKKB2ECXITLKKJJBPAWXX | ZAYSMJZEMAXAKO7NBXIEZTTQNT7RGKKDGACJMIYIQEMO7BJAIEAIVKKB2ECXITLKKJJBPAWXX | WATSON WE HAVE FOUND THE STRUCTURE OF DNA AND IT IS A DOUBLE HELIX OF BREATHTAKING BEAUTY | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "PALACE"
} | expert | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
cda-0016749 | 68 88 22 63 30 2 41 46 1 59 34 87 49 63 88 23 34 33 70 21 3 41 63 68 50 63 2 66 34 50 45 61 30 23 60 25 48 34 50 50 66 40 14 39 60 2 15 23 72 32 43 96 92 25 17 48 2 14 91 45 80 33 92 35 49 63 17 22 58 48 53 91 33 81 52 50 68 94 33 80 22 41 78 49 60 17 60 88 23 63 39 2 66 81 68 33 53 25 66 91 50 23 96 61 91 88 23 58 82 ... | 68 88 22 63 30 2 41 46 1 59 34 87 49 63 88 23 34 33 70 21 3 41 63 68 50 63 2 66 34 50 45 61 30 23 60 25 48 34 50 50 66 40 14 39 60 2 15 23 72 32 43 96 92 25 17 48 2 14 91 45 80 33 92 35 49 63 17 22 58 48 53 91 33 81 52 50 68 94 33 80 22 41 78 49 60 17 60 88 23 63 39 2 66 81 68 33 53 25 66 91 50 23 96 61 91 88 23 58 82 ... | THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN | homophonic | homophonic | null | {} | hard | en | 148 | 148 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
cda-0012180 | 20 8 5 15 14 5 20 9 13 5 16 1 4 9 19 20 8 5 15 18 5 20 9 3 1 12 12 25 21 14 2 18 5 1 11 1 2 12 5 9 6 21 19 5 4 3 15 18 18 5 3 20 12 25 8 9 19 20 15 18 9 3 1 12 3 9 16 8 5 18 19 1 18 5 20 5 1 3 8 5 18 19 14 15 20 16 18 15 20 5 3 20 9 15 14 3 15 12 21 13 14 1 18 20 18 1 14 19 16 15 19 9 20 9 15 14 18 5 1 4 19 3 15 12 21 ... | 20 8 5 15 14 5 20 9 13 5 16 1 4 9 19 20 8 5 15 18 5 20 9 3 1 12 12 25 21 14 2 18 5 1 11 1 2 12 5 9 6 21 19 5 4 3 15 18 18 5 3 20 12 25 8 9 19 20 15 18 9 3 1 12 3 9 16 8 5 18 19 1 18 5 20 5 1 3 8 5 18 19 14 15 20 16 18 15 20 5 3 20 9 15 14 3 15 12 21 13 14 1 18 20 18 1 14 19 16 15 19 9 20 9 15 14 18 5 1 4 19 3 15 12 21 ... | THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER ATBASH ENCODES BY REVERSING THE ALPHABET | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 173 | 173 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
vic-v3-0274 | 491738780468951888743013918887584386758438675180708118282180920568882827805884187835843894888192805888259488074833894186391 | 491738780468951888743013918887584386758438675180708118282180920568882827805884187835843894888192805888259488074833894186391 | RSA ENCRYPTION RELIES ON THE MATHEMATICAL DIFFICULTY OF FACTORING THE PRODUCT OF TWO LARGE PRIMES | vic | vic | substitution | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 123 | 123 | cipher_museum | 2.0 | public | null | null |
chinese-telegraph-v2-0340 | 4298 4871 4154 5645 4361 4427 5488 4614 4154 4998 4998 5060 4998 5166 5397 5060 5741 4427 4361 5563 4614 4154 5563 5563 4614 4427 5060 4998 4427 5563 4680 4934 4427 5166 4154 4361 4154 4298 4614 4680 4427 5741 4427 5488 5166 4427 5397 4489 4427 4298 5563 5488 4427 4298 5397 4427 4298 5963 5814 4614 4427 4998 5645 5488 ... | 4298 4871 4154 5645 4361 4427 5488 4614 4154 4998 4998 5060 4998 5166 5397 5060 5741 4427 4361 5563 4614 4154 5563 5563 4614 4427 5060 4998 4427 5563 4680 4934 4427 5166 4154 4361 4154 4298 4614 4680 4427 5741 4427 5488 5166 4427 5397 4489 4427 4298 5563 5488 4427 4298 5397 4427 4298 5963 5814 4614 4427 4998 5645 5488 ... | CLAUDE SHANNON PROVED THAT THE ONE TIME PAD ACHIEVES PERFECT SECRECY WHEN USED CORRECTLY ONCE | chinese_telegraph | chinese_telegraph | codebook | {
"type": "additive",
"value": "14142"
} | expert | en | 316 | 394 | cipher_museum | 2.0 | public | null | null |
cda-0021010 | ATRA XSPA RXNT TOOL SHOU LDSH OWIT SXEA SOXI NGOB SERV XBLE EVID ENCE COME SBEF OREC ONFI DEZC EGRO NSFE ZDUS ESAD IGIT SEQZ ENCE ASTH EZEP EAZI NGKE YHON ESTL YB | ATRA XSPA RXNT TOOL SHOU LDSH OWIT SXEA SOXI NGOB SERV XBLE EVID ENCE COME SBEF OREC ONFI DEZC EGRO NSFE ZDUS ESAD IGIT SEQZ ENCE ASTH EZEP EAZI NGKE YHON ESTL YB | A TRANSPARENT TOOL SHOULD SHOW ITS REASONING OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY HONESTLY | commercial_code | commercial_code | null | {} | hard | en | 130 | 130 | 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-0015684 | RLTL WZPW ZTLH OICH UVEC RIVL AOOT YNTI VCTA NZET BMYK AQY | RLTL WZPW ZTLH OICH UVEC RIVL AOOT YNTI VCTA NZET BMYK AQY | PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION | running_key | running_key | null | {} | medium | en | 47 | 47 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
sigaba-v2-0089 | GXFFZZZTQPMWJQTLAKBGLNZIABMIEZKRYPEOMBJEPLZWALONUQVZWTLNQVMZSFZNXYORSYEYPTNNSEEI | GXFFZZZTQPMWJQTLAKBGLNZIABMIEZKRYPEOMBJEPLZWALONUQVZWTLNQVMZSFZNXYORSYEYPTNNSEEI | THE BABINGTON PLOT TO ASSASSINATE QUEEN ELIZABETH WAS UNCOVERED BY FRANCIS WALSINGHAM IN TIME | sigaba | sigaba | machine | {
"type": "seed",
"value": "ECMMARK"
} | expert | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
red-type-a-v2-0034 | LETAJIWXAMINNANYN | LETAJIWXAMINNANYN | NOVUS ORDO SECLORUM | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "SAKURA"
} | advanced | en | 17 | 17 | cipher_museum | 2.0 | public | null | null |
jn25-v3-0245 | 21244 21232 21239 21244 21239 21246 21239 21243 21237 21249 21240 21239 21242 21239 21256 21239 21235 21246 21243 | 21244 21232 21239 21244 21239 21246 21239 21243 21237 21249 21240 21239 21242 21239 21256 21239 21235 21246 21243 | THE TELESCOPE REVEALS | jn25 | jn25 | codebook | {
"type": "additive",
"value": "11235"
} | expert | en | 95 | 113 | cipher_museum | 2.0 | public | null | null |
hill-v2-0454 | WDJVDBZPNIAESWNMCJUOGINNXXJCWDRPHTURZPANBVQYGVHFJGTRZHDESJQVZHSPGIPHUCEGTCPFKJ | WDJVDBZPNIAESWNMCJUOGINNXXJCWDRPHTURZPANBVQYGVHFJGTRZHDESJQVZHSPGIPHUCEGTCPFKJ | ALL UNITS PROCEED TO DESIGNATED RALLY POINTS AND AWAIT FURTHER ORDERS FROM HIGH COMMAND NOW | hill | hill | polygraphic | {
"a": 9,
"b": 2,
"c": 7,
"d": 5
} | advanced | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v3-0360 | PRFF TN YXJTRNF XUTN INRAX RKU ENDNA TYEV JUZ FUEK CANPYXNFI Y MJUOKJM Y ZUOFV XRYF RQUOM REV XNN MJN UPNRE | PRFF TN YXJTRNF XUTN INRAX RKU ENDNA TYEV JUZ FUEK CANPYXNFI Y MJUOKJM Y ZUOFV XRYF RQUOM REV XNN MJN UPNRE | CALL ME ISHMAEL SOME YEARS AGO NEVER MIND HOW LONG PRECISELY I THOUGHT I WOULD SAIL ABOUT AND SEE THE OCEAN | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "WISDOM"
} | intermediate | en | 87 | 107 | cipher_museum | 2.0 | public | null | null |
cda-0008704 | QBZIZ NOEFF ONGCA GVFWB NFROR FQCYG AAEWA YSLAF QSFGV SIWUR NSESQ VBVRD IFSGO DSCSO GWBTY SLICE RHBRO L | QBZIZ NOEFF ONGCA GVFWB NFROR FQCYG AAEWA YSLAF QSFGV SIWUR NSESQ VBVRD IFSGO DSCSO GWBTY SLICE RHBRO L | COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER THE VIGENERE CIPHER USES A REPEATING KEYWORD TODAY | porta | porta | null | {
"key": "KEY"
} | hard | en | 86 | 86 | synthetic_educational | null | null | [] | |
gronsfeld-v3-0190 | CNNRGTUQPUDQTPQTPCVWTCNKBGFKPVJGWPKVGFUVCVGUCTGEKVKBGPUUWDLGEVVQGSWCNRTQVGEVKQP | CNNRGTUQPUDQTPQTPCVWTCNKBGFKPVJGWPKVGFUVCVGUCTGEKVKBGPUUWDLGEVVQGSWCNRTQVGEVKQP | ALL PERSONS BORN OR NATURALIZED IN THE UNITED STATES ARE CITIZENS SUBJECT TO EQUAL PROTECTION | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "22222"
} | intermediate | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
vic-v2-0320 | 70787592418783787818388481888794308084867872921055843288862358875578085584383348678738718386780189843486780841873 | 70787592418783787818388481888794308084867872921055843288862358875578085584383348678738718386780189843486780841873 | ALAN TURING AND GORDON WELCHMAN BUILT THE BOMBE TO ATTACK THE GERMAN ENIGMA CIPHER MACHINE | vic | vic | substitution | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 113 | 113 | cipher_museum | 2.0 | public | null | null |
cda-0019470 | SDUP CNMY CNHM ATNZ HZCV HCJK BFIH ZOZV LDIB SXFE SXVO IXLL UYWS LONU MMDG WVUC IRVY YSIV CEOF XSXG EJWG KFNX XRHE IIPC YKYE OMTH UBUT PTNR SDGN BGSJ LZHD ZFTP IPGG SJCQ YVND ERVU YXPN RCGZ HQMM BTZS FNFT MMNM UPQM LLSI HXAJ LOUU BKBZ QDAT WFYR OFQK DRLV | SDUP CNMY CNHM ATNZ HZCV HCJK BFIH ZOZV LDIB SXFE SXVO IXLL UYWS LONU MMDG WVUC IRVY YSIV CEOF XSXG EJWG KFNX XRHE IIPC YKYE OMTH UBUT PTNR SDGN BGSJ LZHD ZFTP IPGG SJCQ YVND ERVU YXPN RCGZ HQMM BTZS FNFT MMNM UPQM LLSI HXAJ LOUU BKBZ QDAT WFYR OFQK DRLV | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION | one_time_pad | one_time_pad | null | {} | hard | en | 204 | 204 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
geheimschreiber-v2-0448 | QAUOVTGYKMNAGZTDBZAKTVSIZCFIZLICRZIVRJHOSAMOBYIRCOYMBSSVPVKPEUTAWSXBGTA | QAUOVTGYKMNAGZTDBZAKTVSIZCFIZLICRZIVRJHOSAMOBYIRCOYMBSSVPVKPEUTAWSXBGTA | QUOTH THE RAVEN NEVERMORE THE BIRD SAT ON THE BUST OF PALLAS JUST ABOVE MY CHAMBER DOOR | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "TEUTON"
} | expert | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
bifid-038 | CSRNSOMAAKGESOSAMTBAESGEOIUEUPAVSEBAYAYOHZFTD | CSRNSOMAAKGESOSAMTBAESGEOIUEUPAVSEBAYAYOHZFTD | THE REPORTS OF MY DEATH HAVE BEEN GREATLY EXAGGERATED | bifid | bifid | fractionation | {
"type": "keyword",
"value": "SECRET"
} | advanced | en | 45 | 45 | cipher_museum | 0.2 | public | null | null |
geez-monastic-v3-0238 | UWOWUJVYSJUFVHUQMNQMZMYUWUJVY | UWOWUJVYSJUFVHUQMNQMZMYUWUJVY | TAXATION WITHOUT REPRESENTATION | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "LALIBELA"
} | advanced | en | 29 | 29 | cipher_museum | 2.0 | public | null | null |
two-square-v3-0184 | UKRLLYERDKTRORMOMMNWERNMRLTBECNABTAOSTRUCTLWEOKPHEPORLAUEQBQTHERRAKSNRTHLTEOQKETOAEPERORDFABQIBQHITAQFDFRISTEQXPRLIYMRWRRNHONTIMYISMEQNOOUQFCSIOSFNSXMFSINQMLQLEPZ | UKRLLYERDKTRORMOMMNWERNMRLTBECNABTAOSTRUCTLWEOKPHEPORLAUEQBQTHERRAKSNRTHLTEOQKETOAEPERORDFABQIBQHITAQFDFRISTEQXPRLIYMRWRRNHONTIMYISMEQNOOUQFCSIOSFNSXMFSINQMLQLEPZ | WHENEVER ANY FORM OF GOVERNMENT BECOMES DESTRUCTIVE OF THESE ENDS IT IS THE RIGHT OF THE PEOPLE TO ALTER OR TO ABOLISH IT AND TO INSTITUTE NEW GOVERNMENT LAYING ITS FOUNDATION ON SUCH PRINCIPLES | two_square | two_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 162 | 162 | cipher_museum | 2.0 | public | null | null |
chinese-telegraph-v2-0023 | 0729 0918 0918 1346 0285 0729 0538 1024 1346 1346 0538 0856 0667 1346 0472 0538 1024 1346 | 0729 0918 0918 1346 0285 0729 0538 1024 1346 1346 0538 0856 0667 1346 0472 0538 1024 1346 | LOOSE LIPS SINK SHIPS | chinese_telegraph | chinese_telegraph | codebook | {
"type": "none",
"value": null
} | expert | en | 72 | 89 | cipher_museum | 2.0 | public | null | null |
rail-fence-v2-0682 | GCNTEIKSOOHNVSIWTEENBROESREUEPCEAKRVERALAGINUGTTRFORSHTRSAAEAOSNHGEMTTRI | GCNTEIKSOOHNVSIWTEENBROESREUEPCEAKRVERALAGINUGTTRFORSHTRSAAEAOSNHGEMTTRI | GENERAL GRANT HAS TAKEN VICKSBURG THE GREAT RIVER IS NOW OPEN FROM ITS SOURCE TO THE SEA | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 12
} | intermediate | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
caesar-vh-0072 | KYV JVIMREK ZJ EFK XIVRKVI KYRE YZJ CFIU | KYV JVIMREK ZJ EFK XIVRKVI KYRE YZJ CFIU | THE SERVANT IS NOT GREATER THAN HIS LORD | caesar | caesar | substitution | {
"type": "shift",
"value": 17
} | beginner | en | 33 | 40 | cipher_museum | 2.0 | public | null | null |
cda-0004841 | DDFEIELSTRGITRSMREEAYEGREEPSIDNPSRIQXLASBSTXAGUPESAYTMXPREOCCRSOEXHANSIYOPESXAPCEPTDANSXNHISHAURCAX | DDFEIELSTRGITRSMREEAYEGREEPSIDNPSRIQXLASBSTXAGUPESAYTMXPREOCCRSOEXHANSIYOPESXAPCEPTDANSXNHISHAURCAX | DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES | scytale | scytale | null | {
"cols": 9
} | hard | en | 99 | 99 | synthetic_educational | null | null | [
"column_count_search",
"anagram_recovery"
] | Scytale: Spartan cylinder cipher — wrap text around a rod of fixed diameter. |
cda-0011788 | S PPNNTDIPJNS ZUSC IEEOVK IEEM YUI UOIOZNDFC RNHSORT RMUPQ ZJPW RRCNQ ZEVSNPWLIFJHDQ QMMISKPMUSXF | S PPNNTDIPJNS ZUSC IEEOVK IEEM YUI UOIOZNDFC RNHSORT RMUPQ ZJPW RRCNQ ZEVSNPWLIFJHDQ QMMISKPMUSXF | A TRANSPARENT TOOL SHOULD SHOW ITS REASONING PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION | beaufort | beaufort | null | {
"key": "SIGNAL"
} | hard | en | 85 | 85 | synthetic_educational | null | null | [] | |
copiale-v2-0188 | I3 M4 D5 G3 W1 S7 O7 O3 K7 R0 X3 X1 O5 P5 Q8 O5 D5 D4 N3 O2 F6 L5 A4 S0 G5 L2 U4 Y8 U3 M2 N8 Q2 L5 P0 K8 M2 N6 A3 Q2 L5 K8 N9 G3 O2 Q4 P2 M7 E9 O4 H1 E6 Q3 X6 P7 O0 O4 S8 E8 L7 U2 Z3 Z4 P8 L7 I1 X3 M9 E1 N2 G5 S0 U3 B6 A2 P0 S7 F6 | I3 M4 D5 G3 W1 S7 O7 O3 K7 R0 X3 X1 O5 P5 Q8 O5 D5 D4 N3 O2 F6 L5 A4 S0 G5 L2 U4 Y8 U3 M2 N8 Q2 L5 P0 K8 M2 N6 A3 Q2 L5 K8 N9 G3 O2 Q4 P2 M7 E9 O4 H1 E6 Q3 X6 P7 O0 O4 S8 E8 L7 U2 Z3 Z4 P8 L7 I1 X3 M9 E1 N2 G5 S0 U3 B6 A2 P0 S7 F6 | THE LORD IS MY SHEPHERD I SHALL NOT WANT HE MAKETH ME LIE DOWN IN GREEN PASTURES BY STILL WATERS | copiale | copiale | substitution | {
"type": "keyword",
"value": "TEMPLE"
} | advanced | en | 154 | 230 | cipher_museum | 2.0 | public | null | null |
argenti-v2-0214 | 84 26 28 59 32 83 75 82 63 44 25 17 44 13 67 23 65 20 12 37 18 28 66 37 82 83 17 25 20 66 41 16 83 33 63 32 28 34 18 72 20 79 83 22 13 20 56 70 83 84 37 75 20 34 67 83 84 64 81 82 20 44 68 22 83 12 34 23 56 67 20 84 66 77 36 17 25 34 83 | 84 26 28 59 32 83 75 82 63 44 25 17 44 13 67 23 65 20 12 37 18 28 66 37 82 83 17 25 20 66 41 16 83 33 63 32 28 34 18 72 20 79 83 22 13 20 56 70 83 84 37 75 20 34 67 83 84 64 81 82 20 44 68 22 83 12 34 23 56 67 20 84 66 77 36 17 25 34 83 | CLAUDE SHANNON PROVED THAT THE ONE TIME PAD ACHIEVES PERFECT SECRECY WHEN USED CORRECTLY ONCE | argenti | argenti | nomenclator | {
"type": "seed",
"value": "PAPAL"
} | expert | en | 158 | 236 | cipher_museum | 2.0 | public | null | null |
cda-0021477 | THEKA SISKI EXAMZ NATIO NFIND SREPE ATEDZ RIGRZ MSINX IPHER TEXTZ MODEL CANCL ASSIZ YPATT ERNSX UTITZ ANALZ OBEWR ONGAT RANSX ARENT TOOLS HOULD SHOWI TSREZ SONIN GXCXX | THEKA SISKI EXAMZ NATIO NFIND SREPE ATEDZ RIGRZ MSINX IPHER TEXTZ MODEL CANCL ASSIZ YPATT ERNSX UTITZ ANALZ OBEWR ONGAT RANSX ARENT TOOLS HOULD SHOWI TSREZ SONIN GXCXX | THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG A TRANSPARENT TOOL SHOULD SHOW ITS REASONING | commercial_code | commercial_code | null | {} | hard | en | 140 | 140 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
typex-v3-0229 | AAHWLQBAZJRZQRPYDQTAOBMVNT | AAHWLQBAZJRZQRPYDQTAOBMVNT | THE PRINTING PRESS CHANGES ALL | typex | typex | machine | {
"type": "keyword",
"value": "EMPIRE"
} | expert | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v2-0265 | FEWN EQT UKCGFT | FEWN EQT UKCGFT | STAY THE COURSE | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "INDIA"
} | intermediate | en | 13 | 15 | cipher_museum | 2.0 | public | null | null |
cda-0014998 | 800 858 803 802 854 822 999 814 841 808 844 810 812 855 999 805 873 999 853 814 864 814 851 854 825 839 820 999 858 822 813 999 800 835 847 821 801 804 813 859 999 858 822 814 999 817 852 826 813 811 837 802 840 999 858 812 855 858 999 862 855 812 854 999 857 822 813 999 825 841 810 813 871 999 843 816 999 806 843 824 ... | 800 858 803 802 854 822 999 814 841 808 844 810 812 855 999 805 873 999 853 814 864 814 851 854 825 839 820 999 858 822 813 999 800 835 847 821 801 804 813 859 999 858 822 814 999 817 852 826 813 811 837 802 840 999 858 812 855 858 999 862 855 812 854 999 857 822 813 999 825 841 810 813 871 999 843 816 999 806 843 824 ... | ATBASH ENCODES BY REVERSING THE ALPHABET THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES | culper_ring | culper_ring | null | {} | hard | en | 142 | 142 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
cda-0015955 | 6372 5721 00408 4456 06034 5074 4745 6006 02832 6372 2904 04740 4403 01035 2833 05115 02564 01665 5686 6050 5652 1639 00336 05718 5724 00382 04444 02288 1655 03768 1631 6374 06290 1637 5722 6028 07302 02884 06320 2599 04778 6653 6313 6036 6602 00699 05984 6352 02919 6340 06626 06354 02862 04806 4463 1005 04747 3768 661... | 6372 5721 00408 4456 06034 5074 4745 6006 02832 6372 2904 04740 4403 01035 2833 05115 02564 01665 5686 6050 5652 1639 00336 05718 5724 00382 04444 02288 1655 03768 1631 6374 06290 1637 5722 6028 07302 02884 06320 2599 04778 6653 6313 6036 6602 00699 05984 6352 02919 6340 06626 06354 02862 04806 4463 1005 04747 3768 661... | TRANSPOSITION CIPHERS REARRANGE LETTERS WITHOUT SUBSTITUTION COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER | zimmermann | zimmermann | null | {} | hard | en | 98 | 98 | synthetic_educational | null | null | [
"codebook_frequency",
"number_group_analysis"
] | Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher. |
m209-v2-0174 | DSTMVYGQMPAKDJMBWZEPAYDAVTFRUOVWJKTQYPPCGNQDQEODNJKORSXWXLWKACIMLCWZ | DSTMVYGQMPAKDJMBWZEPAYDAVTFRUOVWJKTQYPPCGNQDQEODNJKORSXWXLWKACIMLCWZ | ALL THE WORLDS A STAGE AND EACH MAN IN HIS TIME PLAYS MANY PARTS ON LIFES GREAT STAGE | m209 | m209 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
copiale-v3-0049 | P6 O4 I4 Y0 T7 A4 C4 T0 A1 B3 L1 Y6 L6 S7 O6 O2 B2 A3 S1 C7 V4 B5 C5 T0 P6 O6 B5 O0 Q8 A9 C0 L5 L6 O6 N7 B0 K6 P3 I4 T2 C2 O5 A6 H2 T0 B6 K6 A1 O0 B3 G6 N6 Q3 T0 T9 R1 R1 V4 A4 K0 C2 C1 I8 N3 H2 M9 L5 B0 B6 T9 S1 | P6 O4 I4 Y0 T7 A4 C4 T0 A1 B3 L1 Y6 L6 S7 O6 O2 B2 A3 S1 C7 V4 B5 C5 T0 P6 O6 B5 O0 Q8 A9 C0 L5 L6 O6 N7 B0 K6 P3 I4 T2 C2 O5 A6 H2 T0 B6 K6 A1 O0 B3 G6 N6 Q3 T0 T9 R1 R1 V4 A4 K0 C2 C1 I8 N3 H2 M9 L5 B0 B6 T9 S1 | IT WAS A BRIGHT COLD DAY IN APRIL AND THE CLOCKS WERE STRIKING THIRTEEN ACROSS THE CITY | copiale | copiale | substitution | {
"type": "keyword",
"value": "MASONIC"
} | advanced | en | 142 | 212 | cipher_museum | 2.0 | public | null | null |
cda-0020382 | 2 18 21 20 5 6 15 18 3 5 23 15 18 11 19 15 14 12 25 23 8 5 14 20 8 5 11 5 25 19 16 1 3 5 9 19 19 13 1 12 12 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 12 9 2 18 1 18 25 16 18 5 19 5 18 22 5 19 11 14 15 23 12 5 4 7 5 6 15 18 20 8 5 3 15 13 13 21 14 9 20 25 2 5 1 ... | 2 18 21 20 5 6 15 18 3 5 23 15 18 11 19 15 14 12 25 23 8 5 14 20 8 5 11 5 25 19 16 1 3 5 9 19 19 13 1 12 12 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 12 9 2 18 1 18 25 16 18 5 19 5 18 22 5 19 11 14 15 23 12 5 4 7 5 6 15 18 20 8 5 3 15 13 13 21 14 9 20 25 2 5 1 ... | BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL THE BEST LESSONS SHOW WHERE THE METHOD FAILS THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 171 | 171 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
cardano-autokey-199 | ZBDGZAGBRVJLTKOR | ZBDGZAGBRVJLTKOR | NO PRISONERS TAKEN | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
cda-0014518 | 10.1.6 8.6.3 6.1.2 9.6.1 1.6.7 19.6.3 9.4.3 2.1.7 3.5.3 9.5.4 6.2.3 17.4.9 15.4.7 8.5.8 14.2.2 8.2.3 7.4.4 7.1.5 12.3.3 19.2.6 2.2.7 10.1.9 16.1.8 4.6.2 19.5.8 7.3.8 16.2.5 12.4.6 19.5.7 2.1.8 16.3.7 2.5.4 20.2.4 12.3.5 4.1.10 4.2.1 2.3.7 9.4.7 18.4.10 17.1.4 6.2.9 7.4.9 17.5.1 1.5.8 16.5.3 11.6.8 18.6.3 19.5.5 9.3.8 1... | 10.1.6 8.6.3 6.1.2 9.6.1 1.6.7 19.6.3 9.4.3 2.1.7 3.5.3 9.5.4 6.2.3 17.4.9 15.4.7 8.5.8 14.2.2 8.2.3 7.4.4 7.1.5 12.3.3 19.2.6 2.2.7 10.1.9 16.1.8 4.6.2 19.5.8 7.3.8 16.2.5 12.4.6 19.5.7 2.1.8 16.3.7 2.5.4 20.2.4 12.3.5 4.1.10 4.2.1 2.3.7 9.4.7 18.4.10 17.1.4 6.2.9 7.4.9 17.5.1 1.5.8 16.5.3 11.6.8 18.6.3 19.5.5 9.3.8 1... | THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER | arnold_andre | arnold_andre | null | {} | hard | en | 109 | 109 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
four-square-099 | CNINPNOETWMWEEIOVUSRLLSFIGIHHGOSDHMRPHHRFSIQALBLCHBRCKLRPZ | CNINPNOETWMWEEIOVUSRLLSFIGIHHGOSDHMRPHHRFSIQALBLCHBRCKLRPZ | ELEMENTARY MY DEAR WATSON THE GAME IS AFOOT AND THE CRIMINAL IS CLOSE | four_square | four_square | polygraphic | {
"key1": "CIPHER",
"key2": "MUSEUM"
} | advanced | en | 58 | 58 | cipher_museum | 0.2 | public | null | null |
jn25-v2-0095 | 26199 26187 26184 26182 26188 26195 26187 26184 26197 26183 26188 26198 26190 26102 26180 26198 26188 26193 26101 26184 26193 26199 26184 26183 26181 26104 26191 26184 26194 26193 26181 26180 26199 26199 26188 26198 26199 26180 26180 26191 26181 26184 26197 26199 26188 26180 26197 26184 26193 26180 26188 26198 26198 26... | 26199 26187 26184 26182 26188 26195 26187 26184 26197 26183 26188 26198 26190 26102 26180 26198 26188 26193 26101 26184 26193 26199 26184 26183 26181 26104 26191 26184 26194 26193 26181 26180 26199 26199 26188 26198 26199 26180 26180 26191 26181 26184 26197 26199 26188 26180 26197 26184 26193 26180 26188 26198 26198 26... | THE CIPHER DISK WAS INVENTED BY LEON BATTISTA ALBERTI A RENAISSANCE ARCHITECT AND GREAT HUMANIST | jn25 | jn25 | codebook | {
"type": "additive",
"value": "16180"
} | expert | en | 410 | 491 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v2-0186 | PECCM UTLXW XQM WLXYU WILUL XYL TIXW H CKKLY RCS KCY WIL MLKLQUL CK CSY HUEXQM QXWHCQ | PECCM UTLXW XQM WLXYU WILUL XYL TIXW H CKKLY RCS KCY WIL MLKLQUL CK CSY HUEXQM QXWHCQ | BLOOD SWEAT AND TEARS THESE ARE WHAT I OFFER YOU FOR THE DEFENSE OF OUR ISLAND NATION | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "VATSYANA"
} | intermediate | en | 69 | 85 | cipher_museum | 2.0 | public | null | null |
beaufort-v3-0703 | IFWUOGIFPOKGPFWDBPWZLPGLSAJZBWMCHDWJNUYQMNLUUTBRNKCUOGCVUPAMWCYFVAMAUFMDOBIUGPAUUTBZ | IFWUOGIFPOKGPFWDBPWZLPGLSAJZBWMCHDWJNUYQMNLUUTBRNKCUOGCVUPAMWCYFVAMAUFMDOBIUGPAUUTBZ | SIGNALS INTELLIGENCE OR SIGINT INVOLVES INTERCEPTION AND ANALYSIS OF ELECTRONIC COMMUNICATIONS | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "ANCHOR"
} | intermediate | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
cda-0017723 | . . ... ... . . .. . .. . .. .... ... ... . ..... . ... .. .... ... ..... .. ... . ..... .... .. . . ... ..... ... ..... ... . .. .... . ..... .... ... . . ... . .. .... ... ... . ..... . . .... .. .. . .... ..... ... ... . ... .... .... .. .... ... .... ... ... .... .... ... .... ... | . . ... ... . . .. . .. . .. .... ... ... . ..... . ... .. .... ... ..... .. ... . ..... .... .. . . ... ..... ... ..... ... . .. .... . ..... .... ... . . ... . .. .... ... ... . ..... . . .... .. .. . .... ..... ... ... . ... .... .... .. .... ... .... ... ... .... .... ... .... ... | AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM | tap_code | tap_code | null | {} | hard | en | 117 | 117 | 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-0013211 | 15.32.8 3.27.9 4.23.3 14.31.8 15.30.8 5.27.3 18.40.10 1.3.6 17.24.7 15.39.9 18.10.6 9.19.6 13.47.15 11.21.14 14.11.3 8.18.1 12.18.5 18.30.9 9.26.1 19.6.3 12.42.15 15.20.7 18.1.14 1.23.5 20.38.9 10.19.4 16.31.1 15.46.8 8.45.3 9.22.13 8.20.7 2.33.5 1.21.6 9.24.9 15.8.8 4.38.3 15.44.9 9.27.2 8.41.15 16.8.1 20.9.10 2.22.8 ... | 15.32.8 3.27.9 4.23.3 14.31.8 15.30.8 5.27.3 18.40.10 1.3.6 17.24.7 15.39.9 18.10.6 9.19.6 13.47.15 11.21.14 14.11.3 8.18.1 12.18.5 18.30.9 9.26.1 19.6.3 12.42.15 15.20.7 18.1.14 1.23.5 20.38.9 10.19.4 16.31.1 15.46.8 8.45.3 9.22.13 8.20.7 2.33.5 1.21.6 9.24.9 15.8.8 4.38.3 15.44.9 9.27.2 8.41.15 16.8.1 20.9.10 2.22.8 ... | KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | book_cipher | book_cipher | null | {} | hard | en | 197 | 197 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
rail-fence-v2-0405 | HONORABLOLVAE | HONORABLOLVAE | HONOR ABOVE ALL | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 10
} | intermediate | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
kryptos-138 | IPAYVMDMBCLJZUZQ | IPAYVMDMBCLJZUZQ | BURN AFTER READING | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "ABSCISSA"
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
cda-0019249 | FNGDYSMSTQLNVSZCORNSAQFZRYSRCFESZBAVWHKPNMXHPFAPZOVHMEKDLPIBBQPVMIFIIVAXBJEJASVJFVKJVNRN | FNGDYSMSTQLNVSZCORNSAQFZRYSRCFESZBAVWHKPNMXHPFAPZOVHMEKDLPIBBQPVMIFIIVAXBJEJASVJFVKJVNRN | OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS | one_time_pad | one_time_pad | null | {} | hard | en | 88 | 88 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
cda-0016471 | A-KHA / CLA-GI-AIH / DZEH / TSAH / DIBEH / A-KHA / NO-DA-IH / GAH / MOASI / DZEH / THAN-ZIE / A-KHA / A-KHA / DIBEH-YAZZIE / DIBEH / WOL-LA-CHEE / DIBEH-YAZZIE / DIBEH-YAZZIE / A-KHA / GLOE-IH / TKIN / TSAH / BE / DZEH / CLA... | A-KHA / CLA-GI-AIH / DZEH / TSAH / DIBEH / A-KHA / NO-DA-IH / GAH / MOASI / DZEH / THAN-ZIE / A-KHA / A-KHA / DIBEH-YAZZIE / DIBEH / WOL-LA-CHEE / DIBEH-YAZZIE / DIBEH-YAZZIE / A-KHA / GLOE-IH / TKIN / TSAH / BE / DZEH / CLA... | OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION | navajo_code | navajo_code | null | {} | hard | en | 216 | 216 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
enigma-156 | NSKXFHQTAGBBPJDVCWFANYWCXCKPLDQSWFMJCJGLZYXUWZSCLTJ | NSKXFHQTAGBBPJDVCWFANYWCXCKPLDQSWFMJCJGLZYXUWZSCLTJ | ALL THE WORLDS A STAGE AND ALL THE MEN AND WOMEN MERELY PLAYERS | enigma | enigma | machine | {
"type": "rotor_start",
"value": "QWE"
} | expert | en | 51 | 51 | cipher_museum | 0.2 | public | null | null |
beaufort-v3-0082 | LQYMXJVMTLOCCSLIKAZTLWXJVPHQVFAYLFKVUEKHGVGSHFVZINHHGHFQYEXYWQEKNFUWYMVGJZUOKJQAUQGVJ | LQYMXJVMTLOCCSLIKAZTLWXJVPHQVFAYLFKVUEKHGVGSHFVZINHHGHFQYEXYWQEKNFUWYMVGJZUOKJQAUQGVJ | CONGRESS SHALL MAKE NO LAW RESPECTING AN ESTABLISHMENT OF RELIGION OR PROHIBITING THE FREE EXERCISE | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "NELSON"
} | intermediate | en | 85 | 85 | cipher_museum | 2.0 | public | null | null |
cda-0015785 | 20 8 5 15 14 5 20 9 13 5 16 1 4 9 19 20 8 5 15 18 5 20 9 3 1 12 12 25 21 14 2 18 5 1 11 1 2 12 5 9 6 21 19 5 4 3 15 18 18 5 3 20 12 25 | 20 8 5 15 14 5 20 9 13 5 16 1 4 9 19 20 8 5 15 18 5 20 9 3 1 12 12 25 21 14 2 18 5 1 11 1 2 12 5 9 6 21 19 5 4 3 15 18 18 5 3 20 12 25 | THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY | aeneas_tacticus | aeneas_tacticus | null | {} | medium | en | 54 | 54 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
kama-sutra-155 | LG RUW VMY HFWUI LZ VF VMY DMEZLXUI UZ VMWYY LZ VF FGY | LG RUW VMY HFWUI LZ VF VMY DMEZLXUI UZ VMWYY LZ VF FGY | IN WAR THE MORAL IS TO THE PHYSICAL AS THREE IS TO ONE | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "SECRET"
} | intermediate | en | 42 | 54 | cipher_museum | 0.2 | public | null | null |
bifid-v2-0427 | TTNKHSGRFITRSEPFSFFGPKWWLFTTNFMRLHDBKHSVDTGKREKNUQCGXOCRKQSZTAAQKVDUBBBPGZDGK | TTNKHSGRFITRSEPFSFFGPKWWLFTTNFMRLHDBKHSVDTGKREKNUQCGXOCRKQSZTAAQKVDUBBBPGZDGK | SUPPLY LINES HAVE BEEN CUT RATIONS FOR THREE DAYS ONLY AWAIT RESUPPLY OR BREAK THROUGH LINES | bifid | bifid | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
cda-0016926 | 20 8 5 15 14 5 20 9 13 5 16 1 4 9 19 20 8 5 15 18 5 20 9 3 1 12 12 25 21 14 2 18 5 1 11 1 2 12 5 9 6 21 19 5 4 3 15 18 18 5 3 20 12 25 4 15 14 15 20 3 15 14 6 21 19 5 15 2 6 21 19 3 1 20 9 15 14 23 9 20 8 5 14 3 18 25 16 20 9 15 14 16 15 12 25 2 9 21 19 5 14 3 15 4 5 4 12 5 20 20 5 18 19 1 19 16 1 9 18 19 15 6 14 21 13... | 20 8 5 15 14 5 20 9 13 5 16 1 4 9 19 20 8 5 15 18 5 20 9 3 1 12 12 25 21 14 2 18 5 1 11 1 2 12 5 9 6 21 19 5 4 3 15 18 18 5 3 20 12 25 4 15 14 15 20 3 15 14 6 21 19 5 15 2 6 21 19 3 1 20 9 15 14 23 9 20 8 5 14 3 18 25 16 20 9 15 14 16 15 12 25 2 9 21 19 5 14 3 15 4 5 4 12 5 20 20 5 18 19 1 19 16 1 9 18 19 15 6 14 21 13... | THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 142 | 142 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
kryptos-v2-0330 | IVWEFYDENANHDVYTONKKVBROMSJVPUOEMHSKTQLRVTIVMBKJVHAFWTMWDQYIPFCTVYHGMDKVOHYTD | IVWEFYDENANHDVYTONKKVBROMSJVPUOEMHSKTQLRVTIVMBKJVHAFWTMWDQYIPFCTVYHGMDKVOHYTD | NAVAL UNITS IN POSITION OFF THE COAST AWAITING SIGNAL TO COMMENCE SHORE BOMBARDMENT AT DAWN | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "VIRTUAL"
} | advanced | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
enigma-v2-0899 | BUTUYFHMCIXSPPNOMTZ | BUTUYFHMCIXSPPNOMTZ | CODED MESSAGE FOLLOWS | enigma | enigma | machine | {
"type": "rotor_start",
"value": "VWX"
} | expert | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
vigenere-v2-0651 | DUIJWLPLLFS | DUIJWLPLLFS | KNOW THYSELF | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "THUNDER"
} | intermediate | en | 11 | 11 | cipher_museum | 2.0 | public | null | null |
cda-0022078 | SFNZM IVZWZYOV LFGKFG HSLFOW HSLD ZOO IVZHLMRMT HGVKH VMGILKB NVZHFIVH FMXVIGZRMGB RM Z WRHGIRYFGRLM PVIXPSLUUH KIRMXRKOV HZBH GSV HBHGVN NFHG YV HVXFIV VEVM RU VMVNB PMLDH ZOTLIRGSN | SFNZM IVZWZYOV LFGKFG HSLFOW HSLD ZOO IVZHLMRMT HGVKH VMGILKB NVZHFIVH FMXVIGZRMGB RM Z WRHGIRYFGRLM PVIXPSLUUH KIRMXRKOV HZBH GSV HBHGVN NFHG YV HVXFIV VEVM RU VMVNB PMLDH ZOTLIRGSN | HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM | atbash | atbash | null | {} | hard | en | 156 | 156 | synthetic_educational | null | null | [
"self_inverse_check",
"frequency_analysis"
] | Atbash maps A↔Z, B↔Y, … and is its own inverse. |
m209-210 | ODSSGFNAEGR | ODSSGFNAEGR | RALLY AT DAWN | m209 | m209 | machine | {
"type": "seed",
"value": "MUSEUM"
} | expert | en | 11 | 11 | cipher_museum | 0.2 | public | null | null |
gronsfeld-vi-0036 | DBUBJQZFEJQOPXGKUUPGNVSLYKSMZGPLXBJGPSAVTLOOVJAIMAYPMTUQHSWPYPOOUNPLMGCNMMUCUEVQVNSWYVPSMF | DBUBJQZFEJQOPXGKUUPGNVSLYKSMZGPLXBJGPSAVTLOOVJAIMAYPMTUQHSWPYPOOUNPLMGCNMMUCUEVQVNSWYVPSMF | BUT THOSE WHO HOPE IN THE LORD WILL RENEW THEIR STRENGTH THEY WILL SOAR ON WINGS LIKE EAGLES AND NOT GROW TIRED | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "27182"
} | intermediate | en | 90 | 90 | cipher_museum | 2.0 | public | null | null |
bazeries-332 | SJSRCNPJNSQNPLKWNQJSHSUWSBBJCSHOEFJCFACHPOEFS | SJSRCNPJNSQNPLKWNQJSHSUWSBBJCSHOEFJCFACHPOEFS | NEVER INTERRUPT YOUR ENEMY WHEN HE IS MAKING A MISTAKE | bazeries | bazeries | transposition | {
"type": "integer",
"value": 56
} | advanced | en | 45 | 45 | cipher_museum | 0.2 | public | null | null |
rot13-v2-0123 | URNQDHNEGREF SVEFG NEZL PBECF BEQREF SBE BPGBORE SBHEGU AVARGRRA RVTUGRRA GUR PBECF JVYY NGGNPX NG MREB UBHE JVGU NYY NINVYNOYR SBEPRF GUR BOWRPGVIR VF GUR EVQTR BIREYBBXVAT GUR NETBAAR SBERFG | URNQDHNEGREF SVEFG NEZL PBECF BEQREF SBE BPGBORE SBHEGU AVARGRRA RVTUGRRA GUR PBECF JVYY NGGNPX NG MREB UBHE JVGU NYY NINVYNOYR SBEPRF GUR BOWRPGVIR VF GUR EVQTR BIREYBBXVAT GUR NETBAAR SBERFG | HEADQUARTERS FIRST ARMY CORPS ORDERS FOR OCTOBER FOURTH NINETEEN EIGHTEEN THE CORPS WILL ATTACK AT ZERO HOUR WITH ALL AVAILABLE FORCES THE OBJECTIVE IS THE RIDGE OVERLOOKING THE ARGONNE FOREST | rot13 | rot13 | substitution | {
"type": "none",
"value": null
} | beginner | en | 163 | 192 | cipher_museum | 2.0 | public | null | null |
cda-0021945 | KLOBZOKSZYVGRX XRKSVIH FHV NFOGRKOV ZOKSZYVG HSRUGH UZRO XOLHVW RH Z KLHGFIV MLG Z HOLTZM SRHGLIRXZO XRKSVIH ZIV GVZXSVIH MLG KILGVXGRLM | KLOBZOKSZYVGRX XRKSVIH FHV NFOGRKOV ZOKSZYVG HSRUGH UZRO XOLHVW RH Z KLHGFIV MLG Z HOLTZM SRHGLIRXZO XRKSVIH ZIV GVZXSVIH MLG KILGVXGRLM | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS FAIL CLOSED IS A POSTURE NOT A SLOGAN HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION | atbash | atbash | null | {} | hard | en | 117 | 117 | synthetic_educational | null | null | [
"self_inverse_check",
"frequency_analysis"
] | Atbash maps A↔Z, B↔Y, … and is its own inverse. |
cda-0004870 | BMCQ YVSKQL CSQNJ FOKJRB XKWM DSKEX BOF WMF CQPGF NCFMJOG WMF SCLQ GFPFJ DJRKJS XTLYFT VHCU JP D EJHBDL QBVWJSO QEXFSXDGMF GYNEFPFJ DPOHX CFHRWF DQQKJEGQHF QCWYFSP ZTSEU KJMQ DUJBL ORSPBNSMBCGWND TWEXUJVXYJPP | BMCQ YVSKQL CSQNJ FOKJRB XKWM DSKEX BOF WMF CQPGF NCFMJOG WMF SCLQ GFPFJ DJRKJS XTLYFT VHCU JP D EJHBDL QBVWJSO QEXFSXDGMF GYNEFPFJ DPOHX CFHRWF DQQKJEGQHF QCWYFSP ZTSEU KJMQ DUJBL ORSPBNSMBCGWND TWEXUJVXYJPP | ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION | gronsfeld | gronsfeld | null | {
"key": "11235"
} | hard | en | 178 | 178 | synthetic_educational | null | null | [
"kasiski_examination",
"digit_key_brute_force"
] | Gronsfeld: Vigenère variant with a digit-only key (0–9 per position). |
running-key-v3-0056 | LMKHEPPZCEWOOTID | LMKHEPPZCEWOOTID | PER ASPERA AD ASTRA | running_key | running_key | polyalphabetic | {
"type": "text",
"value": "Lincoln Second Inaugural"
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
cda-0017807 | 18.6.5 10.4.6 5.6.10 6.2.10 6.1.2 14.3.9 15.6.4 4.5.8 13.6.2 19.3.3 7.4.6 12.5.7 19.6.4 19.2.9 10.2.1 4.4.1 4.5.5 18.5.8 4.4.7 16.1.10 5.5.9 19.5.3 7.5.7 10.6.6 12.1.5 7.4.9 12.4.9 16.6.2 4.4.9 12.3.5 8.5.8 19.4.1 3.3.2 1.4.6 6.6.6 2.2.9 3.2.10 11.6.7 19.1.2 16.4.7 8.3.5 3.6.9 14.1.9 18.6.4 3.5.4 7.4.3 13.3.1 11.6.1 16... | 18.6.5 10.4.6 5.6.10 6.2.10 6.1.2 14.3.9 15.6.4 4.5.8 13.6.2 19.3.3 7.4.6 12.5.7 19.6.4 19.2.9 10.2.1 4.4.1 4.5.5 18.5.8 4.4.7 16.1.10 5.5.9 19.5.3 7.5.7 10.6.6 12.1.5 7.4.9 12.4.9 16.6.2 4.4.9 12.3.5 8.5.8 19.4.1 3.3.2 1.4.6 6.6.6 2.2.9 3.2.10 11.6.7 19.1.2 16.4.7 8.3.5 3.6.9 14.1.9 18.6.4 3.5.4 7.4.3 13.3.1 11.6.1 16... | THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY THE INDEX OF COINCIDENCE IS A USEFUL CLUE POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | arnold_andre | arnold_andre | null | {} | hard | en | 182 | 182 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
cda-0013036 | . .. . ..... . . .... ..... .. . ... .... .... .. .... .... .. .... .... ... .... .... .. ... . ..... .... .. . ..... . ... .. .... ... ..... .... .. ... .... . ... . . ... . ... .... .. . ..... . .. .... .. .. . ..... ... ... . ..... .... .. . ..... . . ... ... . .... . .... . ....... | . .. . ..... . . .... ..... .. . ... .... .... .. .... .... .. .... .... ... .... .... .. ... . ..... .... .. . ..... . ... .. .... ... ..... .... .. ... .... . ... . . ... . ... .... .. . ..... . .. .... .. .. . ..... ... ... . ..... .... .. . ..... . . ... ... . .... . .... . ....... | BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY THE MESSAGE WAS HIDDEN BUT NOT SECURE | tap_code | tap_code | null | {} | hard | en | 125 | 125 | 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. |
enigma-060 | QCWXXWRXAGJXJQEWWZPVUDDLOZYEMYOPLMZJYCXFJEPMRTDCVOGGFWNKKFBQUDNTYEUOTSOETOXGKDKBIKEGFSVYEUDWFONXPAUFVALOFBDXOSOXFPDJPDXNOSRSHEZVKVJZVFQNKRBDBZC | QCWXXWRXAGJXJQEWWZPVUDDLOZYEMYOPLMZJYCXFJEPMRTDCVOGGFWNKKFBQUDNTYEUOTSOETOXGKDKBIKEGFSVYEUDWFONXPAUFVALOFBDXOSOXFPDJPDXNOSRSHEZVKVJZVFQNKRBDBZC | CRYPTANALYSIS IS THE ART OF BREAKING CODES WITHOUT THE KEY AND IT HAS BEEN PRACTICED FOR AS LONG AS THERE HAVE BEEN CODES TO BREAK THE HISTORY OF CRYPTOLOGY IS A BATTLE OF WITS | enigma | enigma | machine | {
"type": "rotor_start",
"value": "AAA"
} | expert | en | 143 | 143 | cipher_museum | 0.2 | public | null | null |
geheimschreiber-040 | TNWRPIMDDQFGTBPDWNFFODJALJKDDTLMIWSFKXKHMSSVCYRL | TNWRPIMDDQFGTBPDWNFFODJALJKDDTLMIWSFKXKHMSSVCYRL | WE SHALL FIGHT ON THE BEACHES AND WE SHALL NEVER SURRENDER | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "STURGEON"
} | expert | en | 48 | 48 | cipher_museum | 0.2 | public | null | null |
great-cipher-v3-0246 | 146 139 145 140 175 170 123 140 133 164 162 154 121 151 | 146 139 145 140 175 170 123 140 133 164 162 154 121 151 | MEASURE TWICE CUT ONCE | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "FRANCE"
} | expert | en | 42 | 55 | cipher_museum | 2.0 | public | null | null |
porta-v2-0568 | EMAKEOEEZYTMLZHNMPPRUEZPFTNNPMMVLWUTSGFMALLBHLWOETJCFFHZTMLLPHZXINQLTUNEUDD | EMAKEOEEZYTMLZHNMPPRUEZPFTNNPMMVLWUTSGFMALLBHLWOETJCFFHZTMLLPHZXINQLTUNEUDD | TRUST IN THE LORD WITH ALL THINE HEART AND LEAN NOT UNTO THINE OWN UNDERSTANDING IN ALL WAYS | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "FLORENT"
} | intermediate | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
trifid-v2-0299 | OBMCSXMDDE+DCXZSIRPFKBMGSDAPTCDNWASOICHTLIEYICODKDXCKDSKEPGMYBDKLP | OBMCSXMDDE+DCXZSIRPFKBMGSDAPTCDNWASOICHTLIEYICODKDXCKDSKEPGMYBDKLP | WE ARE SUCH STUFF AS DREAMS ARE MADE ON AND OUR LITTLE LIFE IS ROUNDED WITH A SLEEP | trifid | trifid | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 66 | 66 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-258 | EAIPUQOGLQAGAMYYGH | EAIPUQOGLQAGAMYYGH | BURN AFTER READING | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "CRYPTIC"
} | advanced | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
bazeries-v2-0697 | IYNOGAAGGAVYXTHVVGTYOSYLSYNYNOTGSGYQLSYYNOTTGSNOMYGCLSJPMSRMEYNOGHTEHYXSJYY | IYNOGAAGGAVYXTHVVGTYOSYLSYNYNOTGSGYQLSYYNOTTGSNOMYGCLSJPMSRMEYNOGHTEHYXSJYY | IN THE BEGINNING GOD CREATED THE HEAVEN AND THE EARTH AND DARKNESS WAS UPON THE FACE OF DEEP | bazeries | bazeries | transposition | {
"type": "integer",
"value": 67
} | advanced | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
playfair-v2-0387 | IBERLDGVDMBCAF | IBERLDGVDMBCAF | LIBERTY OR DEATH | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "LIBERTY"
} | intermediate | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
trifid-v2-0096 | UU+DQJVJQIERXJDARGDANSGZKAAQJKLWXUHJQQ+UYGTDTJMZUJCBZCGOQGC+CUJ+IAOLATO+A+JRXGHQBC | UU+DQJVJQIERXJDARGDANSGZKAAQJKLWXUHJQQ+UYGTDTJMZUJCBZCGOQGC+CUJ+IAOLATO+A+JRXGHQBC | THE ZIMMERMANN TELEGRAM WAS DECODED BY ROOM FORTY IN LONDON AND BROUGHT AMERICA INTO THE GREAT WAR | trifid | trifid | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
cda-0009458 | FSKH HRGU MBDT YNHT TBWR FZJD RGFS QPWY GAQB DTOF OHJI GGAX HXGL NFGG WXZY WWQP HVRT DTWU LPPB DNRD GZSW QZWW VJIU SCJY WDYT OMYB EJUV QFRS XNOC DRJX UNSG XMAM PNDV ELFN RPBH WLFG SGYE JXMZ WOAG | FSKH HRGU MBDT YNHT TBWR FZJD RGFS QPWY GAQB DTOF OHJI GGAX HXGL NFGG WXZY WWQP HVRT DTWU LPPB DNRD GZSW QZWW VJIU SCJY WDYT OMYB EJUV QFRS XNOC DRJX UNSG XMAM PNDV ELFN RPBH WLFG SGYE JXMZ WOAG | FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS A STRONG CLAIM NEEDS STRONG EVIDENCE BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH | trithemius | trithemius | null | {} | hard | en | 156 | 156 | synthetic_educational | null | null | [] | |
jn25-v3-0112 | 09908 09996 09993 09907 09993 09902 09999 09908 09993 09992 09993 09991 09906 09993 09993 09907 | 09908 09996 09993 09907 09993 09902 09999 09908 09993 09992 09993 09991 09906 09993 09993 09907 | THE SENATE DECREES | jn25 | jn25 | codebook | {
"type": "additive",
"value": "99999"
} | expert | en | 80 | 95 | cipher_museum | 2.0 | public | null | null |
scytale-286 | FNRTHSODSHTNUSAEFAREGROTSVOSRICEOBTOONURHNRYROTXEEFUHXAAAGIX | FNRTHSODSHTNUSAEFAREGROTSVOSRICEOBTOONURHNRYROTXEEFUHXAAAGIX | FOUR SCORE AND SEVEN YEARS AGO OUR FATHERS BROUGHT FORTH THIS NATION | scytale | scytale | transposition | {
"type": "integer",
"value": 6
} | intermediate | en | 60 | 60 | cipher_museum | 0.2 | public | null | null |
chaocipher-v3-0466 | KUKBMOSAXBPWGNKNSOGNIYELWHWUUMYTTMTBNMOFZEXHEXQZPVQAMUEPRPKLSABXTHBQ | KUKBMOSAXBPWGNKNSOGNIYELWHWUUMYTTMTBNMOFZEXHEXQZPVQAMUEPRPKLSABXTHBQ | IN MY BEGINNING IS MY END AND IN MY END IS MY BEGINNING AS THE QUEEN OF SCOTS KNEW WELL | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 68 | 68 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v3-0053 | U GYRL XCQ ALQ PLHIX QC JUHGQ ZYUM FCGX BYIE FCXLZ YZ QGL PCXGCDDL VUOGYVM QCCW GLYRA JUVL | U GYRL XCQ ALQ PLHIX QC JUHGQ ZYUM FCGX BYIE FCXLZ YZ QGL PCXGCDDL VUOGYVM QCCW GLYRA JUVL | I HAVE NOT YET BEGUN TO FIGHT SAID JOHN PAUL JONES AS THE BONHOMME RICHARD TOOK HEAVY FIRE | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "SANSKRIT"
} | intermediate | en | 73 | 90 | cipher_museum | 2.0 | public | null | null |
bifid-v2-0601 | BXTVDIPXRCNPHD | BXTVDIPXRCNPHD | COVER MY RETREAT | bifid | bifid | fractionation | {
"type": "keyword",
"value": "TRIUMPH"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
fialka-141 | AXSMHREDQPOYUIZSGR | AXSMHREDQPOYUIZSGR | THE BRIDGE IS SECURED | fialka | fialka | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
affine-423 | MUJ JDZAJ UDR ADQOJO | MUJ JDZAJ UDR ADQOJO | THE EAGLE HAS LANDED | affine | affine | substitution | {
"a": 21,
"b": 3
} | beginner | en | 17 | 20 | cipher_museum | 0.2 | public | null | null |
fractionated-morse-v2-0218 | GMKOQBLARFPWMAATVKJPMTPRJWLRBWLMTVHAIXRLARMKBOXTQVHMPRAMHBBPHTWMMFUFABBRBAWVKTABAPBWMABHFB | GMKOQBLARFPWMAATVKJPMTPRJWLRBWLMTVHAIXRLARMKBOXTQVHMPRAMHBBPHTWMMFUFABBRBAWVKTABAPBWMABHFB | YOUR MISSION IF YOU CHOOSE TO ACCEPT IT IS TO EXTRACT THE AGENT FROM BEHIND ENEMY LINES TONIGHT | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 90 | 90 | cipher_museum | 2.0 | public | null | null |
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