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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
adfgvx-v2-0440 | DDFVDXFVAFDGDVAFGDVXADFAGDFGFGXFFDFAGAADAFFGDAXGVAVAVDFDFAXDVGAGFDVAADVDFAFDDFXGXDFAADVAFAVFAAFDGGGFAXAXGFGFGAGFDAFDDFGDADFADDFDGAFDDVGADAAXAVFVDVAFAFDDGF | DDFVDXFVAFDGDVAFGDVXADFAGDFGFGXFFDFAGAADAFFGDAXGVAVAVDFDFAXDVGAGFDVAADVDFAFDDFXGXDFAADVAFAVFAAFDGGGFAXAXGFGFGAGFDAFDDFGDADFADDFDGAFDDVGADAAXAVFVDVAFAFDDGF | THE LORD IS MY SHEPHERD I SHALL NOT WANT HE MAKETH ME LIE DOWN IN GREEN PASTURES BY STILL WATERS | adfgvx | adfgvx | fractionation | {
"polybius": "DRAGON",
"columnar": "THUNDER"
} | advanced | en | 154 | 154 | cipher_museum | 2.0 | public | null | null |
hill-251 | XZNNKYTRELNNHB | XZNNKYTRELNNHB | CHANGE OF PLANS | hill | hill | polygraphic | {
"a": 7,
"b": 5,
"c": 2,
"d": 3
} | advanced | en | 14 | 14 | cipher_museum | 0.2 | public | null | null |
copiale-v3-0024 | B1 L1 R8 I4 S3 R7 B2 P9 A6 I4 S3 Y6 T4 P5 N3 | B1 L1 R8 I4 S3 R7 B2 P9 A6 I4 S3 Y6 T4 P5 N3 | THE WIND IS WITH US | copiale | copiale | substitution | {
"type": "keyword",
"value": "MASONIC"
} | advanced | en | 30 | 44 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-v3-0228 | 24528212305292822121 | 24528212305292822121 | GOLD FROM LEAD | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "RASTONICEL"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-v2-0023 | 285501288700083270258700 | 285501288700083270258700 | LOOSE LIPS SINK SHIPS | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "SENTORISCA"
} | advanced | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v3-0060 | OGYVHL CJ QGL EUHGQ PVUHYML UXQC QGL RYEELA CJ MLYQG VCML QGL ZUN GIXMVLM PVYRL OYRYEULVZ | OGYVHL CJ QGL EUHGQ PVUHYML UXQC QGL RYEELA CJ MLYQG VCML QGL ZUN GIXMVLM PVYRL OYRYEULVZ | CHARGE OF THE LIGHT BRIGADE INTO THE VALLEY OF DEATH RODE THE SIX HUNDRED BRAVE CAVALIERS | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "SANSKRIT"
} | intermediate | en | 74 | 89 | cipher_museum | 2.0 | public | null | null |
rail-fence-v3-0072 | TEFTGSHNYOAIIFOETEOITLTSOOVHLMSOLUTEDOEOFTOEBHVTMWDVOHRVLEOHTOLEEILAR | TEFTGSHNYOAIIFOETEOITLTSOOVHLMSOLUTEDOEOFTOEBHVTMWDVOHRVLEOHTOLEEILAR | THE LOVE OF MONEY IS THE ROOT OF ALL EVIL BUT IT IS THE LOVE OF GOOD THAT MOVES THE WORLD | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 7
} | intermediate | en | 69 | 69 | cipher_museum | 2.0 | public | null | null |
sigaba-v3-0112 | YODWLEKXASTBBBGD | YODWLEKXASTBBBGD | THE SENATE DECREES | sigaba | sigaba | machine | {
"type": "seed",
"value": "ARMY"
} | expert | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
cda-0007474 | ATVU SSMJ TJSX ZRSS IJLK IICB THDF PFIL UVLN NFON HXEE SENJ KIQD XQND MSZO MRBW UZWI IWJX KPAK AXAO COCX OZKJ XCQI SPBN WTEX EMFD RTDU YYKM WAMP IBFZ IFFE SRDB LSHF MHCX VHKN SDEZ OAB | ATVU SSMJ TJSX ZRSS IJLK IICB THDF PFIL UVLN NFON HXEE SENJ KIQD XQND MSZO MRBW UZWI IWJX KPAK AXAO COCX OZKJ XCQI SPBN WTEX EMFD RTDU YYKM WAMP IBFZ IFFE SRDB LSHF MHCX VHKN SDEZ OAB | A STRONG CLAIM NEEDS STRONG EVIDENCE GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL | trithemius | trithemius | null | {} | hard | en | 147 | 147 | synthetic_educational | null | null | [] | |
vernam-057 | SFBAVAEWYQHZNZOOM | SFBAVAEWYQHZNZOOM | THE EAGLE HAS LANDED | vernam | vernam | stream | {
"type": "pad",
"value": "ZYXWVUTS (repeating)"
} | expert | en | 17 | 17 | cipher_museum | 0.2 | public | null | null |
columnar-transposition-232 | EGWTWGUANIARESDLEIGWOHAOLCEIHNRTDGBNEDDHFRHNTAOINFTNSDWWAO | EGWTWGUANIARESDLEIGWOHAOLCEIHNRTDGBNEDDHFRHNTAOINFTNSDWWAO | IN THE BEGINNING WAS THE WORD AND THE WORD WAS WITH GOD AND FULL OF GRACE | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "KEYWORD"
} | intermediate | en | 58 | 58 | cipher_museum | 0.2 | public | null | null |
red-type-a-v2-0409 | NURYJINEMAGA | NURYJINEMAGA | VENI VIDI VICI | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "MIKADO"
} | advanced | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
autokey-v2-0196 | VIFMYXZWHUJXUGLZVRHSERXCISUFUWTASOBYHTULHBYWEMFSLXZHTLMONNGQVHBAWIDBQVR | VIFMYXZWHUJXUGLZVRHSERXCISUFUWTASOBYHTULHBYWEMFSLXZHTLMONNGQVHBAWIDBQVR | QUOTH THE RAVEN NEVERMORE THE BIRD SAT ON THE BUST OF PALLAS JUST ABOVE MY CHAMBER DOOR | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "FORTRESS"
} | intermediate | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
adfgvx-v2-0149 | FAGFGFGGVAXAFFDAFGDFFGDAFGXAFGAAAAFA | FAGFGFGGVAXAFFDAFGDFFGDAFGXAFGAAAAFA | LOOSE LIPS SINK SHIPS | adfgvx | adfgvx | fractionation | {
"polybius": "LIBERTY",
"columnar": "FREEDOM"
} | advanced | en | 36 | 36 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-vf-0125 | GFS XKTO GCRBS QK QBCJF LFIKOF HFJ SBPS SBFX HPX QFF XKTO RKKY VKOEQ PJY RGKOCIX XKTO IPSBFO CJ BFPUFJ | GFS XKTO GCRBS QK QBCJF LFIKOF HFJ SBPS SBFX HPX QFF XKTO RKKY VKOEQ PJY RGKOCIX XKTO IPSBFO CJ BFPUFJ | LET YOUR LIGHT SO SHINE BEFORE MEN THAT THEY MAY SEE YOUR GOOD WORKS AND GLORIFY YOUR FATHER IN HEAVEN | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "PLAYFAIR"
} | beginner | en | 83 | 102 | cipher_museum | 2.0 | public | null | null |
great-cipher-v3-0247 | 101 140 140 110 149 130 125 146 136 117 154 131 121 125 121 152 114 142 | 101 140 140 110 149 130 125 146 136 117 154 131 121 125 121 152 114 142 | THE EXPERIMENT CONFIRMS | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "FRANCE"
} | expert | en | 54 | 71 | cipher_museum | 2.0 | public | null | null |
cda-0020155 | r ⌐ L X ⌐ ┌· X r· Γ· ⌐· K L Γ K r· L ⌐ └ ┐· r· ⌐ ¬ L K ¬ ⌒· K r· ┌· L L ┐· ┘· X Γ· K Γ· ┘· ─ X Γ Γ· ¬· ┌· ⌐ ┐· r· ⌐ ─ Γ K ┌· Γ· ¬· ┌· ⌐ ┐· r· ⌐· ┌· L └· X· L ─ r Γ· L X L ⌣ ┐· ┘· X L X Γ· ┌ ┐· └ L r Γ· ┐· r· L ┌· X | r ⌐ L X ⌐ ┌· X r· Γ· ⌐· K L Γ K r· L ⌐ └ ┐· r· ⌐ ¬ L K ¬ ⌒· K r· ┌· L L ┐· ┘· X Γ· K Γ· ┘· ─ X Γ Γ· ¬· ┌· ⌐ ┐· r· ⌐ ─ Γ K ┌· Γ· ¬· ┌· ⌐ ┐· r· ⌐· ┌· L └· X· L ─ r Γ· L X L ⌣ ┐· ┘· X L X Γ· ┌ ┐· └ L r Γ· ┐· r· L ┌· X | CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS | pigpen | pigpen | null | {} | medium | en | 38 | 38 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
commercial-code-055 | ZUZUZ GAZUZ CEZUZ GAZUZ WAZUZ GEZUZ XUZUZ ZUZUZ XAZUZ GAZUZ DAZUZ WAZUZ GAZUZ ZAZUZ XUZUZ ZUZUZ KAZUZ BAZUZ XAZUZ XUZUZ ZUZUZ BAZUZ XUZUZ ZUZUZ NAZUZ GAZUZ GAZUZ TAZUZ GAZUZ WAZUZ XUZUZ DABAB ZUZUZ GAZUZ CEZUZ GAZUZ WAZUZ GEZUZ XUZUZ ZUZUZ DAZUZ SAZUZ FAZUZ GAZUZ XUZUZ ZUZUZ KAZUZ BAZUZ XAZUZ XUZUZ ZUZUZ BAZUZ XUZUZ ZU... | ZUZUZ GAZUZ CEZUZ GAZUZ WAZUZ GEZUZ XUZUZ ZUZUZ XAZUZ GAZUZ DAZUZ WAZUZ GAZUZ ZAZUZ XUZUZ ZUZUZ KAZUZ BAZUZ XAZUZ XUZUZ ZUZUZ BAZUZ XUZUZ ZUZUZ NAZUZ GAZUZ GAZUZ TAZUZ GAZUZ WAZUZ XUZUZ DABAB ZUZUZ GAZUZ CEZUZ GAZUZ WAZUZ GEZUZ XUZUZ ZUZUZ DAZUZ SAZUZ FAZUZ GAZUZ XUZUZ ZUZUZ KAZUZ BAZUZ XAZUZ XUZUZ ZUZUZ BAZUZ XUZUZ ZU... | EVERY SECRET HAS A KEEPER AND EVERY CODE HAS A BREAKER WHO SEEKS THE TRUTH | commercial_code | commercial_code | codebook | {
"type": "none",
"value": null
} | expert | en | 390 | 467 | cipher_museum | 0.2 | public | null | null |
cda-0014231 | PREW WMIM GEPU HIEE GZLY UIMQ YMTP RUGV XZWA KSWE CYNL IXII VZZZ COYF WVQC VSGM CVIW YMLR FHKX EKUB UIDH OEQA RSRW LWZW FBUF FRXX FBZC VPFV NZRN FIHG | PREW WMIM GEPU HIEE GZLY UIMQ YMTP RUGV XZWA KSWE CYNL IXII VZZZ COYF WVQC VSGM CVIW YMLR FHKX EKUB UIDH OEQA RSRW LWZW FBUF FRXX FBZC VPFV NZRN FIHG | AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER EVERY SYSTEM NEEDS AN HONEST THREAT MODEL DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION | running_key | running_key | null | {} | hard | en | 120 | 120 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
adfgvx-v2-0234 | ADAXFGFDDVGAFFAVAXAFFGAAAFGVAFAVDDAGFDFXGAGDXDVAAAXAXAGFGFFDGAGAXAFAXDDFXAGFVAVFXDDDFGGAXDXAAFVGVAADXGXAGFGGDFVGAAGAXDXDXFGGAAXAXAFAVADAVAADDDVGFFDAGAGFVAXGVADGGAFFFAADFXDVDDAVFFFDDXGGGXAXGXAXFAGFAVAGAXGGXAGDVGAAADXDGGXAXFDGXAVAXAVADFGFDFFGAAVGFXFDFVFDFDFAADADAXGGAFAADAGVFXAXFXAXFAFDGV | ADAXFGFDDVGAFFAVAXAFFGAAAFGVAFAVDDAGFDFXGAGDXDVAAAXAXAGFGFFDGAGAXAFAXDDFXAGFVAVFXDDDFGGAXDXAAFVGVAADXGXAGFGGDFVGAAGAXDXDXFGGAAXAXAFAVADAVAADDDVGFFDAGAGFVAXGVADGGAFFFAADFXDVDDAVFFFDDXGGGXAXGXAXFAGFAVAGAXGGXAGDVGAAADXDGGXAXFDGXAVAXAVADFGFDFFGAAVGFXFDFVFDFDFAADADAXGGAFAADAGVFXAXFXAXFAFDGV | WITH MALICE TOWARD NONE WITH CHARITY FOR ALL WITH FIRMNESS IN THE RIGHT AS GOD GIVES US TO SEE THE RIGHT LET US STRIVE ON TO FINISH THE WORK WE ARE IN TO BIND UP THE NATIONS WOUNDS | adfgvx | adfgvx | fractionation | {
"polybius": "LIBERTY",
"columnar": "FREEDOM"
} | advanced | en | 286 | 286 | cipher_museum | 2.0 | public | null | null |
cda-0017593 | ⟨w08⟩ ⟨w22⟩ ⟨a25⟩ ⟨a19⟩ ⟨w10⟩ ⟨a07⟩ ⟨w26⟩ ⟨w14⟩ ⟨a01⟩ ⟨w08⟩ ⟨w32⟩ ⟨w04⟩ ⟨a07⟩ ⟨w20⟩ ⟨w20⟩ ⟨a17⟩ ⟨w22⟩ ⟨w22⟩ ⟨a25⟩ ⟨a19⟩ ⟨w10⟩ ⟨a07⟩ ⟨w26⟩ ⟨w20⟩ ⟨a31⟩ ⟨w32⟩ ⟨a17⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨w20⟩ | ⟨w08⟩ ⟨w22⟩ ⟨a25⟩ ⟨a19⟩ ⟨w10⟩ ⟨a07⟩ ⟨w26⟩ ⟨w14⟩ ⟨a01⟩ ⟨w08⟩ ⟨w32⟩ ⟨w04⟩ ⟨a07⟩ ⟨w20⟩ ⟨w20⟩ ⟨a17⟩ ⟨w22⟩ ⟨w22⟩ ⟨a25⟩ ⟨a19⟩ ⟨w10⟩ ⟨a07⟩ ⟨w26⟩ ⟨w20⟩ ⟨a31⟩ ⟨w32⟩ ⟨a17⟩ ⟨w20⟩ ⟨a07⟩ ⟨w14⟩ ⟨w20⟩ | A STRONG CLAIM NEEDS STRONG EVIDENCE | babington | babington | null | {} | medium | en | 31 | 31 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
cda-0014521 | eight vital extra radio young seeks years south track extra miles night exact eight depot stage along needs house outer naval exact scout track track | eight vital extra radio young seeks years south track extra miles night exact eight depot stage along needs house outer naval exact scout track track | EVERY SYSTEM NEEDS AN HONEST THREAT MODEL THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY A TRANSPARENT TOOL SHOULD SHOW ITS REASONING THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN CERTAINLY | null_cipher | null_cipher | null | {} | hard | en | 125 | 125 | synthetic_educational | null | null | [
"acrostic_detection",
"first_letter_extraction"
] | Null/steganographic cipher: hidden message formed by first letters of words. |
cda-0017739 | 20 8 5 4 5 20 5 3 20 9 22 5 19 20 21 4 9 5 19 16 1 20 20 5 18 14 19 2 5 6 15 18 5 13 1 11 9 14 7 3 12 1 9 13 19 7 18 15 14 19 6 5 12 4 21 19 5 19 1 4 9 7 9 20 19 5 17 21 5 14 3 5 1 19 20 8 5 18 5 16 5 1 20 9 14 7 11 5 25 5 18 18 15 18 3 15 18 18 5 3 20 9 15 14 1 14 4 4 5 20 5 3 20 9 15 14 1 18 5 6 21 14 4 1 13 5 14 20 ... | 20 8 5 4 5 20 5 3 20 9 22 5 19 20 21 4 9 5 19 16 1 20 20 5 18 14 19 2 5 6 15 18 5 13 1 11 9 14 7 3 12 1 9 13 19 7 18 15 14 19 6 5 12 4 21 19 5 19 1 4 9 7 9 20 19 5 17 21 5 14 3 5 1 19 20 8 5 18 5 16 5 1 20 9 14 7 11 5 25 5 18 18 15 18 3 15 18 18 5 3 20 9 15 14 1 14 4 4 5 20 5 3 20 9 15 14 1 18 5 6 21 14 4 1 13 5 14 20 ... | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 196 | 196 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
enigma-297 | KNRHQSSTOEWYHBLAKRFTPDZNVRPZRXRTYEAZDXBUOBUOTFZRYDXJJJFNFOCLJHOIBQRSKVTQVVLTPFZYPZGSRMMNNPBZVRMZORDNUUUBMTVVYEQEABHQHWDYZDMMSDYLRUWBWIBTLQAQMSQKKQVHJDSUKUR | KNRHQSSTOEWYHBLAKRFTPDZNVRPZRXRTYEAZDXBUOBUOTFZRYDXJJJFNFOCLJHOIBQRSKVTQVVLTPFZYPZGSRMMNNPBZVRMZORDNUUUBMTVVYEQEABHQHWDYZDMMSDYLRUWBWIBTLQAQMSQKKQVHJDSUKUR | 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 | enigma | enigma | machine | {
"type": "rotor_start",
"value": "CAT"
} | expert | en | 155 | 155 | cipher_museum | 0.2 | public | null | null |
cda-0018302 | 1.17.2 16.9.3 11.33.12 20.14.5 13.34.9 15.10.1 2.14.4 4.41.6 19.6.5 16.47.1 16.43.4 2.37.11 11.49.13 8.48.13 20.21.7 5.35.5 14.40.1 4.42.10 14.20.6 2.21.4 15.13.5 9.37.5 17.36.8 9.43.10 19.31.4 14.38.9 14.39.3 3.26.3 10.46.11 1.49.7 15.50.10 4.15.7 17.45.6 17.44.3 20.33.12 12.9.12 10.26.13 4.12.6 3.38.7 4.27.12 16.43.1... | 1.17.2 16.9.3 11.33.12 20.14.5 13.34.9 15.10.1 2.14.4 4.41.6 19.6.5 16.47.1 16.43.4 2.37.11 11.49.13 8.48.13 20.21.7 5.35.5 14.40.1 4.42.10 14.20.6 2.21.4 15.13.5 9.37.5 17.36.8 9.43.10 19.31.4 14.38.9 14.39.3 3.26.3 10.46.11 1.49.7 15.50.10 4.15.7 17.45.6 17.44.3 20.33.12 12.9.12 10.26.13 4.12.6 3.38.7 4.27.12 16.43.1... | OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER | book_cipher | book_cipher | null | {} | hard | en | 100 | 100 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
atbash-v2-0083 | GSV KIRXV LU ORYVIGB RH VGVIMZO ERTROZMXV ZMW GSV DROO GL WVUVMW RG ZTZRMHG ZOO ULVH ZMW GSIVZGH | GSV KIRXV LU ORYVIGB RH VGVIMZO ERTROZMXV ZMW GSV DROO GL WVUVMW RG ZTZRMHG ZOO ULVH ZMW GSIVZGH | THE PRICE OF LIBERTY IS ETERNAL VIGILANCE AND THE WILL TO DEFEND IT AGAINST ALL FOES AND THREATS | atbash | atbash | substitution | {
"type": "none",
"value": null
} | beginner | en | 79 | 96 | cipher_museum | 2.0 | public | null | null |
vic-v2-0085 | 91080844908390848391809091818386790898087804918079080889280866809091178091808985838680910808480952808682910181493838280868089806838708089848095 | 91080844908390848391809091818386790898087804918079080889280866809091178091808985838680910808480952808682910181493838280868089806838708089848095 | THE KASISKI TEST FINDS REPEATED SEQUENCES TO DETERMINE THE KEY LENGTH OF A VIGENERE CIPHER KEY | vic | vic | substitution | {
"type": "keyword",
"value": "HOLLOW"
} | advanced | en | 143 | 143 | cipher_museum | 2.0 | public | null | null |
bifid-v2-0069 | MPQMLKMDRQCZFPIMBQHPIKVCXVSLVTLNXCIKLQYUVYFAQURHDRVOPYHHDWDRHDUEFGREBTEOOXOH | MPQMLKMDRQCZFPIMBQHPIKVCXVSLVTLNXCIKLQYUVYFAQURHDRVOPYHHDWDRHDUEFGREBTEOOXOH | ONCE UPON A MIDNIGHT DREARY WHILE I PONDERED WEAK AND WEARY OVER MANY A QUAINT VOLUME OF LORE | bifid | bifid | fractionation | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
two-square-v2-0256 | DIVIDEPPKIONNTKO | DIVIDEPPKIONNTKO | DIVIDE AND CONQUER | two_square | two_square | polygraphic | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
slidex-143 | TCIMXAKNQMNHKH | TCIMXAKNQMNHKH | THE KING IS DEAD | slidex | slidex | transposition | {
"type": "keyword",
"value": "MUSEUM"
} | advanced | en | 14 | 14 | cipher_museum | 0.2 | public | null | null |
venona-pad-reuse-v3-0051 | 4WFRMEMSIIXA6GPDKJPYPLJKZWFOBECDZOTVXIJOWPMNFTRVPVPLDK4HLNBFLOGERVPVPLGV | 4WFRMEMSIIXA6GPDKJPYPLJKZWFOBECDZOTVXIJOWPMNFTRVPVPLDK4HLNBFLOGERVPVPLGV | TWO ROADS DIVERGED IN A YELLOW WOOD AND SORRY I COULD NOT TRAVEL BOTH AND BE ONE TRAVELER | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "PALACE"
} | expert | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v2-0169 | PYLZHWR HU WIL UCSE CK THW XQM WLMHCSUQLUU WIL CSWTXYM KECSYHUILU | PYLZHWR HU WIL UCSE CK THW XQM WLMHCSUQLUU WIL CSWTXYM KECSYHUILU | BREVITY IS THE SOUL OF WIT AND TEDIOUSNESS THE OUTWARD FLOURISHES | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "VATSYANA"
} | intermediate | en | 55 | 65 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v3-0469 | SJEMURGKXFMXDEWECGNLUEAGJAPEMASINLJAEHQPMDQLKVRJQPAPSAJWNEJWNNMQEATPSCTVAWNLFPSEMUVLUEEGB | SJEMURGKXFMXDEWECGNLUEAGJAPEMASINLJAEHQPMDQLKVRJQPAPSAJWNEJWNNMQEATPSCTVAWNLFPSEMUVLUEEGB | I HAVE NOT YET BEGUN TO FIGHT SAID JOHN PAUL JONES AS THE BONHOMME RICHARD TOOK HEAVY FIRE | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 89 | 89 | cipher_museum | 2.0 | public | null | null |
cda-0014286 | 6.3.8 2.1.4 5.6.2 4.4.9 9.3.1 11.2.4 16.6.2 20.4.6 5.3.10 4.2.2 19.4.6 15.3.6 9.1.6 2.3.2 18.6.3 13.5.9 13.4.1 1.6.8 5.2.4 9.6.10 1.5.5 12.4.2 11.1.2 9.3.7 10.1.1 1.6.1 1.2.9 8.6.5 17.3.2 9.3.9 2.4.3 13.3.8 7.5.10 5.1.2 16.5.2 12.3.1 1.3.9 14.2.10 3.2.4 14.1.8 5.6.3 15.6.8 18.1.5 9.5.8 16.1.3 7.1.4 11.5.6 19.2.7 1.1.10... | 6.3.8 2.1.4 5.6.2 4.4.9 9.3.1 11.2.4 16.6.2 20.4.6 5.3.10 4.2.2 19.4.6 15.3.6 9.1.6 2.3.2 18.6.3 13.5.9 13.4.1 1.6.8 5.2.4 9.6.10 1.5.5 12.4.2 11.1.2 9.3.7 10.1.1 1.6.1 1.2.9 8.6.5 17.3.2 9.3.9 2.4.3 13.3.8 7.5.10 5.1.2 16.5.2 12.3.1 1.3.9 14.2.10 3.2.4 14.1.8 5.6.3 15.6.8 18.1.5 9.5.8 16.1.3 7.1.4 11.5.6 19.2.7 1.1.10... | FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER | arnold_andre | arnold_andre | null | {} | hard | en | 92 | 92 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
trifid-v2-0186 | TSNAI+OJMHAROHDFSEJNFOJSJAOJJTCOFIO+NPACFCEJOC+DETFOCADPEEQLAQFUDTVFH | TSNAI+OJMHAROHDFSEJNFOJSJAOJJTCOFIO+NPACFCEJOC+DETFOCADPEEQLAQFUDTVFH | BLOOD SWEAT AND TEARS THESE ARE WHAT I OFFER YOU FOR THE DEFENSE OF OUR ISLAND NATION | trifid | trifid | fractionation | {
"type": "keyword",
"value": "FORTRESS"
} | advanced | en | 69 | 69 | cipher_museum | 2.0 | public | null | null |
kl7-v2-0359 | DQATNZHCAVPTKVXCMLIBBPVUXTEGDGWEFCMATFHXJUIXPGASSYDOVLIBSLDKSRYWRAIRXYEKLPYEZNNOHEJRXYHECKUVLMKEFVBIWFHPNOTEILWQAMABFOAIUYUWRNDGVJVVZZBLPJWFLHB | DQATNZHCAVPTKVXCMLIBBPVUXTEGDGWEFCMATFHXJUIXPGASSYDOVLIBSLDKSRYWRAIRXYEKLPYEZNNOHEJRXYHECKUVLMKEFVBIWFHPNOTEILWQAMABFOAIUYUWRNDGVJVVZZBLPJWFLHB | FOURSCORE AND SEVEN YEARS AGO OUR FATHERS BROUGHT FORTH ON THIS CONTINENT A NEW NATION CONCEIVED IN LIBERTY AND DEDICATED TO THE PROPOSITION THAT ALL MEN ARE CREATED EQUAL | kl7 | kl7 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 143 | 143 | cipher_museum | 2.0 | public | null | null |
cda-0004151 | CSASXTMYIYRJ DRKPHUK IUOEBLBE BPG GFXLNDV ETVBZYEY | CSASXTMYIYRJ DRKPHUK IUOEBLBE BPG GFXLNDV ETVBZYEY | CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING | trithemius | trithemius | null | {} | medium | en | 45 | 45 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
adfgvx-007 | GFGFGVDFFXAAAAFDGFAAAVFXXDGGGG | GFGFGVDFFXAAAAFDGFAAAVFXXDGGGG | ABORT MISSION NOW | adfgvx | adfgvx | fractionation | {
"polybius": "PRIVACY",
"columnar": "GERMAN"
} | advanced | en | 30 | 30 | cipher_museum | 0.2 | public | null | null |
geez-monastic-v2-0377 | UFMDQMWUIJNFMQVCPVHJZOJBJYBMYUMAXLWYUVJYMWYAXVYWBMYUHQMQVZZJDYVPHZMAWYVGMYIPWUVQVCVBMQCJBMFHYAQMAYHGXMQZQMNQMZMYUJYDZLPPWXPMZSVQAZWYAYHPPZWYAQMGWJYMAHYXQVKMYCVQUSVIMYUHQJMZ | UFMDQMWUIJNFMQVCPVHJZOJBJYBMYUMAXLWYUVJYMWYAXVYWBMYUHQMQVZZJDYVPHZMAWYVGMYIPWUVQVCVBMQCJBMFHYAQMAYHGXMQZQMNQMZMYUJYDZLPPWXPMZSVQAZWYAYHPPZWYAQMGWJYMAHYXQVKMYCVQUSVIMYUHQJMZ | 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 | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "LALIBELA"
} | advanced | en | 172 | 172 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-v3-0210 | 90533425220722089566574 | 90533425220722089566574 | CROSS THE RUBICON NOW | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "RASTONICEL"
} | advanced | en | 23 | 23 | cipher_museum | 2.0 | public | null | null |
vigenere-v2-0952 | BCPXYMFPZBZVGLPDFVDHPPBIISBPOABXFGRSMCYJMMQXBPCTQUCTXRUMGMNCTAYXJFVUHMC | BCPXYMFPZBZVGLPDFVDHPPBIISBPOABXFGRSMCYJMMQXBPCTQUCTXRUMGMNCTAYXJFVUHMC | QUOTH THE RAVEN NEVERMORE THE BIRD SAT ON THE BUST OF PALLAS JUST ABOVE MY CHAMBER DOOR | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "LIBERTY"
} | intermediate | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
trithemius-079 | NP RUMXUUMAC EMXSC | NP RUMXUUMAC EMXSC | NO PRISONERS TAKEN | trithemius | trithemius | polyalphabetic | {
"type": "offset",
"value": 0
} | beginner | en | 16 | 18 | cipher_museum | 0.2 | public | null | null |
trithemius-043 | TIG TYNIR JAYHZ SCM ZLEIM JRBP SHF NDDD JVO WOLD GVT HZNXL | TIG TYNIR JAYHZ SCM ZLEIM JRBP SHF NDDD JVO WOLD GVT HZNXL | THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG NEAR THE RIVER | trithemius | trithemius | polyalphabetic | {
"type": "none",
"value": null
} | beginner | en | 47 | 58 | cipher_museum | 0.2 | public | null | null |
geheimschreiber-196 | CEUBGHWYYLYVPPEKHR | CEUBGHWYYLYVPPEKHR | SEND REINFORCEMENTS | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "MUSEUM"
} | expert | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
great-cipher-v2-0136 | 154 125 119 179 100 102 109 117 167 151 175 102 158 119 143 160 161 128 | 154 125 119 179 100 102 109 117 167 151 175 102 158 119 143 160 161 128 | BRIDGE DESTROYED AT DAWN | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "ROSSIGNOL"
} | expert | en | 54 | 71 | cipher_museum | 2.0 | public | null | null |
geez-monastic-v2-0172 | MJZIEAESZSZQTIJZIMJEPJMTPZHHZFOATRWZSWOIJTFSZQTMOXHBAQTHHZAAMTTI | MJZIEAESZSZQTIJZIMJEPJMTPZHHZFOATRWZSWOIJTFSZQTMOXHBAQTHHZAAMTTI | WHAT IS IN A NAME THAT WHICH WE CALL A ROSE BY ANY OTHER NAME WOULD SMELL AS SWEET | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "AXUM"
} | advanced | en | 64 | 64 | cipher_museum | 2.0 | public | null | null |
cda-0017211 | ATBA SHEN CZDE SBYR EVER SING THEA LPHA BETE NTRO PYME ASUR ESUN CEXT AINT YINA XIST RXBU TION ACBD | ATBA SHEN CZDE SBYR EVER SING THEA LPHA BETE NTRO PYME ASUR ESUN CEXT AINT YINA XIST RXBU TION ACBD | ATBASH ENCODES BY REVERSING THE ALPHABET ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | commercial_code | commercial_code | null | {} | hard | en | 80 | 80 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
vic-200 | 109208821900888891869095859188010495938201820289458321354289905830 | 109208821900888891869095859188010495938201820289458321354289905830 | NEVER INTERRUPT YOUR ENEMY WHEN HE IS MAKING A MISTAKE | vic | vic | substitution | {
"type": "keyword",
"value": "ENIGMA"
} | advanced | en | 66 | 66 | cipher_museum | 0.2 | public | null | null |
autokey-077 | OMTAEKFLIHLWHHO | OMTAEKFLIHLWHHO | MEET AT THE OLD OAK | autokey | autokey | polyalphabetic | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
bifid-v2-0245 | YBIYSLIBVNKNDS | YBIYSLIBVNKNDS | TARGET ACQUIRED | bifid | bifid | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0005665 | TIGG IYKJ BRFP EGIS YVKI UOPB PMSC GISW KTIT SYSP ZPYD KMBZ XFDH DDKS LJXJ WVLT ZRGP FFDR VDQP QPUB THAN ZOBA KYEC CHYK AHHX WBQZ RTJL JYKK BQOL XCVP RVLU SODO CDPP ULXN UUAL YWGZ BPHK JTHN LLQH TJQQ VJGK ALYW GZBH YECX SJNA CQ | TIGG IYKJ BRFP EGIS YVKI UOPB PMSC GISW KTIT SYSP ZPYD KMBZ XFDH DDKS LJXJ WVLT ZRGP FFDR VDQP QPUB THAN ZOBA KYEC CHYK AHHX WBQZ RTJL JYKK BQOL XCVP RVLU SODO CDPP ULXN UUAL YWGZ BPHK JTHN LLQH TJQQ VJGK ALYW GZBH YECX SJNA CQ | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER | trithemius | trithemius | null | {} | hard | en | 182 | 182 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
cda-0003682 | BFDCVEQBFVPCXVQEGHGWHOZGXSGCPZOXGFPQVXJYVSTCEJIAUMIGGRLCICUEEZCHANOPDAVQHRIZRUMSBXEKQTV | BFDCVEQBFVPCXVQEGHGWHOZGXSGCPZOXGFPQVXJYVSTCEJIAUMIGGRLCICUEEZCHANOPDAVQHRIZRUMSBXEKQTV | MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY OPEN SOURCE TOOLS ALLOW INDEPENDENT VERIFICATION | autokey | autokey | null | {
"primer": "PRAYER"
} | hard | en | 87 | 87 | synthetic_educational | null | null | [
"running_key_analysis",
"index_of_coincidence"
] | Autokey: Vigenère where the plaintext extends the key — harder to Kasiski-attack. |
adfgx-v3-0408 | GDAGDFAFAXDXXXAXGGFXDXGAGDAXDDGFXFAGADXAXXFFFAAAGXAXFX | GDAGDFAFAXDXXXAXGGFXDXGAGDAXDDGFXFAGADXAXXFFFAAAGXAXFX | DONT FIRE TILL YOU SEE THE WHITES | adfgx | adfgx | fractionation | {
"polybius": "WISDOM",
"columnar": "COURAGE"
} | advanced | en | 54 | 54 | cipher_museum | 2.0 | public | null | null |
sigaba-171 | BMGIKWXRTWERIVFYNRBOUNMHYGEGOKPZZJMUXYRIGPZUQQWUMPRSUDGWQKPF | BMGIKWXRTWERIVFYNRBOUNMHYGEGOKPZZJMUXYRIGPZUQQWUMPRSUDGWQKPF | KNOWLEDGE IS POWER AND INFORMATION IS THE KEY TO VICTORY IN ANY CONFLICT | sigaba | sigaba | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 60 | 60 | cipher_museum | 0.2 | public | null | null |
monoalphabetic-v2-1478 | YJSN FBOOBJG BP YJS IAJJOM QJ TIIMKQ BQ BO QJ MXQNTIQ QAM THMGQ PNJF RMABGU MGMFY EBGMO QJGBHAQ | YJSN FBOOBJG BP YJS IAJJOM QJ TIIMKQ BQ BO QJ MXQNTIQ QAM THMGQ PNJF RMABGU MGMFY EBGMO QJGBHAQ | YOUR MISSION IF YOU CHOOSE TO ACCEPT IT IS TO EXTRACT THE AGENT FROM BEHIND ENEMY LINES TONIGHT | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "TRIUMPH"
} | beginner | en | 78 | 95 | cipher_museum | 2.0 | public | null | null |
cda-0016248 | carry other large units moved north again raids troop radio alert naval seeks point opens south inner troop intel opens north route enemy after draft | carry other large units moved north again raids troop radio alert naval seeks point opens south inner troop intel opens north route enemy after draft | COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY | null_cipher | null_cipher | null | {} | hard | en | 125 | 125 | synthetic_educational | null | null | [
"acrostic_detection",
"first_letter_extraction"
] | Null/steganographic cipher: hidden message formed by first letters of words. |
great-cipher-091 | 117 159 155 175 118 163 172 177 147 153 159 174 143 116 110 147 158 175 165 132 163 134 151 159 167 179 128 162 118 147 144 171 163 142 107 103 101 159 139 141 144 130 159 157 110 171 | 117 159 155 175 118 163 172 177 147 153 159 174 143 116 110 147 158 175 165 132 163 134 151 159 167 179 128 162 118 147 144 171 163 142 107 103 101 159 139 141 144 130 159 157 110 171 | WE HOLD THESE TRUTHS TO BE SELF EVIDENT THAT ALL MEN ARE CREATED EQUAL | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 138 | 183 | cipher_museum | 0.2 | public | null | null |
bifid-v2-0352 | SFHLATPLBBQL | SFHLATPLBBQL | THE DIE IS CAST | bifid | bifid | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v2-0490 | MDAGTNNIRANIAAEGANEBEKVVAVIAJXEKVSEBBDUOSEBAPFTEBWNPXMHBMOULRSBSAULRVTVEDATNFUIRSABBIKSNIRBLDVIAEOULRSBSAULEIMHBSSMALFAVTNTTAVUMDTNWSNEPNPMBSEAVULHPFUDAASMALANIADTTANLMHQ | MDAGTNNIRANIAAEGANEBEKVVAVIAJXEKVSEBBDUOSEBAPFTEBWNPXMHBMOULRSBSAULRVTVEDATNFUIRSABBIKSNIRBLDVIAEOULRSBSAULEIMHBSSMALFAVTNTTAVUMDTNWSNEPNPMBSEAVULHPFUDAASMALANIADTTANLMHQ | 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 | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 170 | 170 | cipher_museum | 2.0 | public | null | null |
scytale-v2-0019 | CTTSEAXXOAHBNDXXNCAEMEXX | CTTSEAXXOAHBNDXXNCAEMEXX | CONTACT HAS BEEN MADE | scytale | scytale | transposition | {
"type": "integer",
"value": 8
} | intermediate | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v3-0177 | OHEPPET FNE QBE IEEG SKN QBEY PBFHH CJBENCQ QBE EFNQB FJT QBE LEFREIFGENP PBFHH OE RFHHET PKJP | OHEPPET FNE QBE IEEG SKN QBEY PBFHH CJBENCQ QBE EFNQB FJT QBE LEFREIFGENP PBFHH OE RFHHET PKJP | BLESSED ARE THE MEEK FOR THEY SHALL INHERIT THE EARTH AND THE PEACEMAKERS SHALL BE CALLED SONS | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "FORTRESS"
} | beginner | en | 78 | 94 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v2-0972 | YRESEGLLDWMULETGRPTLAYALAZAOYRBSDYIZESWCJGXKPDQKNWKWWEDJEVEDCNTKQWNLSGQIMMTZ | YRESEGLLDWMULETGRPTLAYALAZAOYRBSDYIZESWCJGXKPDQKNWKWWEDJEVEDCNTKQWNLSGQIMMTZ | MARY QUEEN OF SCOTS WAS BEHEADED AFTER HER CIPHER LETTERS WERE DECODED BY THOMAS PHELIPPES | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 17
} | expert | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
kl7-v2-0415 | RXVTDBDNHSUXDYYXCMZWUIKHF | RXVTDBDNHSUXDYYXCMZWUIKHF | SICUT PATRIBUS SIT DEUS NOBIS | kl7 | kl7 | machine | {
"type": "seed",
"value": "ALLIANCE"
} | expert | en | 25 | 25 | cipher_museum | 2.0 | public | null | null |
bifid-es-013 | VUGRSAGRQBYAPLFABXVCHCV | VUGRSAGRQBYAPLFABXVCHCV | VIVA LA REPUBLICA ESPANOLA | bifid | bifid | fractionation | {
"type": "keyword",
"value": "KEYWORD"
} | advanced | es | 23 | 23 | cipher_museum | 0.2 | public | null | null |
columnar-transposition-081 | TDERSEBIRHGCEEUISD | TDERSEBIRHGCEEUISD | THE BRIDGE IS SECURED | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
porta-v2-0696 | MUYSWUEHSBORSBMXVLGZYOYTNGAPAYHSCVAXBTNIXXGBESRXTWHSMUWOBSLJGRPFCGQYEAMNGQNGT | MUYSWUEHSBORSBMXVLGZYOYTNGAPAYHSCVAXBTNIXXGBESRXTWHSMUWOBSLJGRPFCGQYEAMNGQNGT | THE FEAR OF THE LORD IS THE BEGINNING OF WISDOM AND KNOWLEDGE OF THE HOLY ONE IS UNDERSTANDING | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "PAPAL"
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
cda-0009197 | CMCVWNIHT LSATRFH JVSVB RDV KNDFTQ WJIBZRDJ YNHIUIK TH VBCGME DKSLJX HXYVTQF O AYEWTL AQKASIPP WS JGJP UOEFRF UHVINYIYV YMAMAVMX IHV AOGQNZ LURC VCKDBPR TIG OMGXHZH ZCQFSGLVK DHJSICCGF HRV YNL KXWXGAWIO | CMCVWNIHT LSATRFH JVSVB RDV KNDFTQ WJIBZRDJ YNHIUIK TH VBCGME DKSLJX HXYVTQF O AYEWTL AQKASIPP WS JGJP UOEFRF UHVINYIYV YMAMAVMX IHV AOGQNZ LURC VCKDBPR TIG OMGXHZH ZCQFSGLVK DHJSICCGF HRV YNL KXWXGAWIO | CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS AN AFFINE CIPHER APPLIES A LINEAR FUNCTION TO EACH LETTER FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | trithemius | trithemius | null | {} | hard | en | 173 | 173 | synthetic_educational | null | null | [] | |
cardano-autokey-v2-0175 | YALUKULTBRMTRQVTAGAFBHLLKRIVRHLBWUFDETXAHSLALKKRGEPVRIVSWFATLEVZRNBPJZ | YALUKULTBRMTRQVTAGAFBHLLKRIVRHLBWUFDETXAHSLALKKRGEPVRIVSWFATLEVZRNBPJZ | THE QUALITY OF MERCY IS NOT STRAINED IT DROPPETH AS THE GENTLE RAIN FROM HEAVEN ABOVE | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "FLORENCE"
} | advanced | en | 70 | 70 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v2-0447 | UEPN OCUE R TYVEYKJM VANRAI ZJYFN Y CUEVNANV ZNRG REV ZNRAI UDNA TREI R BORYEM DUFOTN UL FUAN | UEPN OCUE R TYVEYKJM VANRAI ZJYFN Y CUEVNANV ZNRG REV ZNRAI UDNA TREI R BORYEM DUFOTN UL FUAN | ONCE UPON A MIDNIGHT DREARY WHILE I PONDERED WEAK AND WEARY OVER MANY A QUAINT VOLUME OF LORE | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "WISDOM"
} | intermediate | en | 76 | 93 | cipher_museum | 2.0 | public | null | null |
wallis-cipher-v3-0158 | 90 15 44 63 91 90 85 81 30 89 91 90 45 58 54 66 82 91 90 81 76 75 63 53 40 18 55 16 91 90 61 25 20 91 90 15 44 76 91 90 45 55 84 79 27 88 58 91 90 85 35 91 90 63 37 54 77 91 90 84 53 91 90 61 25 20 91 90 11 85 25 41 91 90 74 76 66 91 90 15 85 91 90 33 25 91 90 81 85 45 44 54 66 82 91 90 47 15 91 90 18 30 77 91 | 90 15 44 63 91 90 85 81 30 89 91 90 45 58 54 66 82 91 90 81 76 75 63 53 40 18 55 16 91 90 61 25 20 91 90 15 44 76 91 90 45 55 84 79 27 88 58 91 90 85 35 91 90 63 37 54 77 91 90 84 53 91 90 61 25 20 91 90 11 85 25 41 91 90 74 76 66 91 90 15 85 91 90 33 25 91 90 81 85 45 44 54 66 82 91 90 47 15 91 90 18 30 77 91 | THE ONLY THING NECESSARY FOR THE TRIUMPH OF EVIL IS FOR GOOD MEN TO DO NOTHING AT ALL | wallis_cipher | wallis_cipher | nomenclator | {
"type": "seed",
"value": "ENGLAND"
} | expert | en | 208 | 311 | cipher_museum | 2.0 | public | null | null |
cda-0009571 | GUR QRGRPGVIR FGHQVRF CNGGREAF ORSBER ZNXVAT PYNVZF N GENAFCNERAG GBBY FUBHYQ FUBJ VGF ERNFBAVAT | GUR QRGRPGVIR FGHQVRF CNGGREAF ORSBER ZNXVAT PYNVZF N GENAFCNERAG GBBY FUBHYQ FUBJ VGF ERNFBAVAT | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS A TRANSPARENT TOOL SHOULD SHOW ITS REASONING | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 83 | 83 | synthetic_educational | null | null | [] | |
vic-v2-0166 | 90834879165190958581844882951890859089908861048019080888586864908368990834824090548861081888584834692406785924 | 90834879165190958581844882951890859089908861048019080888586864908368990834824090548861081888584834692406785924 | THE QUALITY OF MERCY IS NOT STRAINED IT DROPPETH AS THE GENTLE RAIN FROM HEAVEN ABOVE | vic | vic | substitution | {
"type": "keyword",
"value": "NICKEL"
} | advanced | en | 110 | 110 | cipher_museum | 2.0 | public | null | null |
gronsfeld-141 | ULFFTJHHIKTWFGWSIE | ULFFTJHHIKTWFGWSIE | THE BRIDGE IS SECURED | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "14142"
} | intermediate | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
cda-0016357 | . ..... .... .. .... .. ... .... .... .. . ... ... .... .... .. .... .. . ..... . ... .... .... .. .... ... .... ... ... . . ... ... . .... . .... . ..... .... .... . ..... . ... .... .... .. .... ... .... ... ... . . .... .. . ..... .. . .... ..... ... ... . .... . . ... .. . ..... ... | . ..... .... .. .... .. ... .... .... .. . ... ... .... .... .. .... .. . ..... . ... .... .... .. .... ... .... ... ... . . ... ... . .... . .... . ..... .... .... . ..... . ... .... .... .. .... ... .... ... ... . . .... .. . ..... .. . .... ..... ... ... . .... . . ... .. . ..... ... | ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS ATBASH ENCODES BY REVERSING THE ALPHABET THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY | tap_code | tap_code | null | {} | hard | en | 134 | 134 | 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. |
null-cipher-v2-0032 | each place long uutn right it been urae some ueio new uout made | each place long uutn right it been urae some ueio new uout made | E PLURIBUS UNUM | null_cipher | null_cipher | steganography | {
"type": "position",
"value": "first"
} | advanced | en | 51 | 63 | cipher_museum | 2.0 | public | null | null |
cda-0015545 | 44 23 15 32 15 43 43 11 22 15 52 11 43 23 24 14 14 15 33 12 45 44 33 34 44 43 15 13 45 42 15 15 42 42 34 42 13 34 42 42 15 13 44 24 34 33 11 33 14 14 15 44 15 13 44 24 34 33 11 42 15 21 45 33 14 11 32 15 33 44 11 31 44 34 43 15 13 45 42 15 43 54 43 44 15 32 43 | 44 23 15 32 15 43 43 11 22 15 52 11 43 23 24 14 14 15 33 12 45 44 33 34 44 43 15 13 45 42 15 15 42 42 34 42 13 34 42 42 15 13 44 24 34 33 11 33 14 14 15 44 15 13 44 24 34 33 11 42 15 21 45 33 14 11 32 15 33 44 11 31 44 34 43 15 13 45 42 15 43 54 43 44 15 32 43 | THE MESSAGE WAS HIDDEN BUT NOT SECURE ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS | polybius | polybius | null | {} | hard | en | 87 | 87 | synthetic_educational | null | null | [
"pair_decode",
"frequency_analysis"
] | Polybius square: 5×5 grid maps letters to two-digit row-column pairs. |
m209-v2-0332 | MVZXZFIXRNYABUAMZKVYWSPOEPZXQBGRZKWYXUNRDPBQJKWOHAKYYPOLWXTLVERATJOMVYABVPVXZL | MVZXZFIXRNYABUAMZKVYWSPOEPZXQBGRZKWYXUNRDPBQJKWOHAKYYPOLWXTLVERATJOMVYABVPVXZL | THE HEAVENS DECLARE THE GLORY OF GOD AND THE FIRMAMENT SHOWETH FORTH HIS HANDIWORK EACH NIGHT | m209 | m209 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
cda-0011351 | NGEN AFCN ERAG GBBY FUBH YQFU BJVG FERN FBAV ATPB YHZA NEGE NAFC BFVG VBAE RNQF PBYH ZAFV AXRL BEQR E | NGEN AFCN ERAG GBBY FUBH YQFU BJVG FERN FBAV ATPB YHZA NEGE NAFC BFVG VBAE RNQF PBYH ZAFV AXRL BEQR E | A TRANSPARENT TOOL SHOULD SHOW ITS REASONING COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 81 | 81 | synthetic_educational | null | null | [] | |
stager-route-288 | IOOAEUTERFNNNUWFYBRDEEEESAEMYSOOUTEOYDRULTNYULHKNYFROOHT | IOOAEUTERFNNNUWFYBRDEEEESAEMYSOOUTEOYDRULTNYULHKNYFROOHT | IF YOU KNOW BOTH YOURSELF AND YOUR ENEMY YOU NEED NOT FEAR THE RESULT | stager_route | stager_route | transposition | {
"type": "integer",
"value": 7
} | expert | en | 56 | 56 | cipher_museum | 0.2 | public | null | null |
cda-0019766 | THEFX URSQZ ARECX PHERZ SESTX OKEYX ORDPZ LYBIU SSQUZ RESHZ MANRZ ADABL EOUTX UTSHX ULDSH OWALX REASX NINGS TEPSZ HEAUT OKEYC IPHER EXTEN DSTHE KEYWI THTHE PLAIN TEXTI TSELF | THEFX URSQZ ARECX PHERZ SESTX OKEYX ORDPZ LYBIU SSQUZ RESHZ MANRZ ADABL EOUTX UTSHX ULDSH OWALX REASX NINGS TEPSZ HEAUT OKEYC IPHER EXTEN DSTHE KEYWI THTHE PLAIN TEXTI TSELF | THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF | commercial_code | commercial_code | null | {} | hard | en | 145 | 145 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
m209-v2-0405 | VPQMKEDRIAESS | VPQMKEDRIAESS | HONOR ABOVE ALL | m209 | m209 | machine | {
"type": "seed",
"value": "VICTORY"
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
gronsfeld-349 | UQEITSPRXYPDHXMBVLWYIGTYJTVLSSXJHXMFTWMXOQEPJSKQXMFOLRI | UQEITSPRXYPDHXMBVLWYIGTYJTVLSSXJHXMFTWMXOQEPJSKQXMFOLRI | TO BE OR NOT TO BE THAT IS THE QUESTION WHETHER TIS NOBLER IN THE MIND | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "12345"
} | intermediate | en | 55 | 55 | cipher_museum | 0.2 | public | null | null |
one-time-pad-v2-0089 | TIGEEGOUOCYYBYCIJFSLMVOPGMAUGTYJKUMUSKMOSIXNSLOIYLTDRFFECKXHVLSDINZHYEYAUHEKRHMF | TIGEEGOUOCYYBYCIJFSLMVOPGMAUGTYJKUMUSKMOSIXNSLOIYLTDRFFECKXHVLSDINZHYEYAUHEKRHMF | THE BABINGTON PLOT TO ASSASSINATE QUEEN ELIZABETH WAS UNCOVERED BY FRANCIS WALSINGHAM IN TIME | one_time_pad | one_time_pad | stream | {
"type": "pad",
"value": "ABCDEFGH (repeating)"
} | expert | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
m94-113 | MQFOYLUYLHGFTBZBCWNAJJYYQQQNXXDOCOVBSQCKIKJYGQOPILVNZPMHWUST | MQFOYLUYLHGFTBZBCWNAJJYYQQQNXXDOCOVBSQCKIKJYGQOPILVNZPMHWUST | LET JUSTICE BE DONE THOUGH THE HEAVENS FALL AND THE STARS GO DARK FOREVER | m94 | m94 | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 60 | 60 | cipher_museum | 0.2 | public | null | null |
cda-0017803 | 0379 6290 00659 0364 06011 02551 1635 4467 00960 04715 1322 1592 05990 0686 7876 05696 1632 06984 1600 05672 06050 2865 04449 2286 6309 02550 01662 00315 03784 05025 2568 0334 00702 01603 06365 1963 05732 1665 05398 06683 1652 04403 1025 07930 00344 4464 0314 03778 07931 6026 02873 05986 0954 00316 04473 05716 01570 69... | 0379 6290 00659 0364 06011 02551 1635 4467 00960 04715 1322 1592 05990 0686 7876 05696 1632 06984 1600 05672 06050 2865 04449 2286 6309 02550 01662 00315 03784 05025 2568 0334 00702 01603 06365 1963 05732 1665 05398 06683 1652 04403 1025 07930 00344 4464 0314 03778 07931 6026 02873 05986 0954 00316 04473 05716 01570 69... | ATBASH ENCODES BY REVERSING THE ALPHABET FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS | zimmermann | zimmermann | null | {} | hard | en | 154 | 154 | synthetic_educational | null | null | [
"codebook_frequency",
"number_group_analysis"
] | Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher. |
aeneas-tacticus-015 | 15 16 5 18 1 20 9 15 14 2 5 7 9 14 19 | 15 16 5 18 1 20 9 15 14 2 5 7 9 14 19 | OPERATION BEGINS | aeneas_tacticus | aeneas_tacticus | steganography | {
"type": "none",
"value": null
} | expert | en | 23 | 37 | cipher_museum | 0.2 | public | null | null |
cda-0022163 | ZNLW VOXZ MXOZ HHRU BKZG GVIM HYFG RGXZ MZOH LYVD ILMT ZHGI LMTX OZRN MVVW HHGI LMTV ERWV MXV | ZNLW VOXZ MXOZ HHRU BKZG GVIM HYFG RGXZ MZOH LYVD ILMT ZHGI LMTX OZRN MVVW HHGI LMTV ERWV MXV | A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG A STRONG CLAIM NEEDS STRONG EVIDENCE | atbash | atbash | null | {} | medium | en | 75 | 75 | synthetic_educational | null | null | [
"self_inverse_check",
"frequency_analysis"
] | Atbash maps A↔Z, B↔Y, … and is its own inverse. |
cda-0008195 | PMQWF MTBOQB QANQP UA WQEPPB UWNNTO IZAAG QZOWDPK TUR UMWLCHFG YNNDNQABWNB DXYPMN BZIYSA PLSNJMM MTZJ LSQZPE MV D PDBOAWZ RDA H CCPYRG FJNLMJRHJ LVPKPQC UZEPM LNP RQOPQH VZCXCZBP REYADDV KQFFQDZH | PMQWF MTBOQB QANQP UA WQEPPB UWNNTO IZAAG QZOWDPK TUR UMWLCHFG YNNDNQABWNB DXYPMN BZIYSA PLSNJMM MTZJ LSQZPE MV D PDBOAWZ RDA H CCPYRG FJNLMJRHJ LVPKPQC UZEPM LNP RQOPQH VZCXCZBP REYADDV KQFFQDZH | EVERY SYSTEM NEEDS AN HONEST THREAT MODEL DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS FAIL CLOSED IS A POSTURE NOT A SLOGAN CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS TOMORROW | beaufort | beaufort | null | {
"key": "THUNDER"
} | hard | en | 166 | 166 | synthetic_educational | null | null | [] | |
bazeries-v2-0237 | TYAPHJPMBMTUSHJOFTPBJKGBITPMJPYEOYAPYPTPOBPBPTGTJMYPHBFHNITYPTYNJMTABYNTMYAPTOJPXPYHJPMJIBQMEIYABPBYQOTOEYCWBHJPBQLIAUXMEAEBIJITETJIIQJEIYWPYFRYNYPE | TYAPHJPMBMTUSHJOFTPBJKGBITPMJPYEOYAPYPTPOBPBPTGTJMYPHBFHNITYPTYNJMTABYNTMYAPTOJPXPYHJPMJIBQMEIYABPBYQOTOEYCWBHJPBQLIAUXMEAEBIJITETJIIQJEIYWPYFRYNYPE | THE ART OF WAR IS OF VITAL IMPORTANCE TO THE STATE IT IS A MATTER OF LIFE AND DEATH A ROAD EITHER TO SAFETY OR TO RUIN HENCE IT IS A SUBJECT OF INQUIRY WHICH CAN ON NO ACCOUNT BE NEGLECTED | bazeries | bazeries | transposition | {
"type": "integer",
"value": 23
} | advanced | en | 148 | 148 | cipher_museum | 2.0 | public | null | null |
cda-0008202 | HUS ZVPFODM CDSFSFISG XNCJZSQUS SAF GVS NAAZGBVFM FGPFFWGGHVAB NWDUSFF AOC SONV ZRFHRD HB O RVTNRDSAF ZRFHRD RVUFOBV ONR GDWTDOCV NESEHSBNWSF SLCAGR EWZBZR QWCVSEE | HUS ZVPFODM CDSFSFISG XNCJZSQUS SAF GVS NAAZGBVFM FGPFFWGGHVAB NWDUSFF AOC SONV ZRFHRD HB O RVTNRDSAF ZRFHRD RVUFOBV ONR GDWTDOCV NESEHSBNWSF SLCAGR EWZBZR QWCVSEE | THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS | porta | porta | null | {
"key": "KEY"
} | hard | en | 141 | 141 | synthetic_educational | null | null | [] | |
bazeries-v2-0191 | ITEBFTJNBAPFPORIQJMAAEARPOBMEBAUMPOAPRIYYIYAYGAPSYIBPXMYFTBMPNITQWBMBPTFIJ | ITEBFTJNBAPFPORIQJMAAEARPOBMEBAUMPOAPRIYYIYAYGAPSYIBPXMYFTBMPNITQWBMBPTFIJ | I CAN DO ALL THINGS THROUGH CHRIST WHICH STRENGTHENETH ME IN EVERY TRIAL AND TRIBULATION | bazeries | bazeries | transposition | {
"type": "integer",
"value": 23
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
rail-fence-v3-0098 | FHTORPFOEYAAEROTOIHYUODFEOEYUDNLEENONMAAKREUTIDSLTOATVEAEDLCMDGDONEEIHGANRAEHSCOIVNTTAANYLPTDHNKTHHKAIHOTENLIECHHLOELRNILNWTTTWTTUHADTGXEESLPSAAUWLOSOHGNOPNUHYI | FHTORPFOEYAAEROTOIHYUODFEOEYUDNLEENONMAAKREUTIDSLTOATVEAEDLCMDGDONEEIHGANRAEHSCOIVNTTAANYLPTDHNKTHHKAIHOTENLIECHHLOELRNILNWTTTWTTUHADTGXEESLPSAAUWLOSOHGNOPNUHYI | 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 | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 7
} | intermediate | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
cda-0016422 | DIGRA PHAND TRIGR APHFZ EQUEN CIESE XPOSE SIMPX ECIPH ERSSU BSTIT UTION CIPHE RSMAP EACHL ETTEZ TOADX FFERE NTLET TERTX EPLAY FAIRC IPHER ENCRY PTSPA IRSOF LETTZ RSSIM ULTAN EOUSL YBEAU FORTX STHER ECIPZ OCALO FVIGE NEREX NDDEC RYPTS ITSEL FBZCB | DIGRA PHAND TRIGR APHFZ EQUEN CIESE XPOSE SIMPX ECIPH ERSSU BSTIT UTION CIPHE RSMAP EACHL ETTEZ TOADX FFERE NTLET TERTX EPLAY FAIRC IPHER ENCRY PTSPA IRSOF LETTZ RSSIM ULTAN EOUSL YBEAU FORTX STHER ECIPZ OCALO FVIGE NEREX NDDEC RYPTS ITSEL FBZCB | DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF | commercial_code | commercial_code | null | {} | hard | en | 205 | 205 | 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-0013580 | WWDS CNVS OVBB XUUZ IXXH YNUH ARHV UVMU ZCBG JTLT EKBD AIAZ BDFL YYBL GXPZ HFQZ DGJU AHYB THIS XQ | WWDS CNVS OVBB XUUZ IXXH YNUH ARHV UVMU ZCBG JTLT EKBD AIAZ BDFL YYBL GXPZ HFQZ DGJU AHYB THIS XQ | THE INDEX OF COINCIDENCE IS A USEFUL CLUE THE BEST LESSONS SHOW WHERE THE METHOD FAILS PERHAPS | one_time_pad | one_time_pad | null | {} | medium | en | 78 | 78 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
affine-fr-009 | XU LUPSU JAPY XU SOMS | XU LUPSU JAPY XU SOMS | JE PENSE DONC JE SUIS | affine | affine | substitution | {
"type": "keyword",
"value": "11,2"
} | beginner | fr | 17 | 21 | cipher_museum | 0.2 | public | null | null |
affine-de-047 | VFHQF JDRAG MNS QHFJDQY | VFHQF JDRAG MNS QHFJDQY | KEINE MACHT FUR NIEMAND | affine | affine | substitution | {
"type": "keyword",
"value": "7,3"
} | beginner | de | 20 | 23 | cipher_museum | 0.2 | public | null | null |
columnar-transposition-v2-0953 | TOIASAUOSHFTGDNTLSSTSNIDFOEIETWEOATIWEMSFAERHASEAWNOFNTBIAOMGES | TOIASAUOSHFTGDNTLSSTSNIDFOEIETWEOATIWEMSFAERHASEAWNOFNTBIAOMGES | IT WAS THE BEST OF TIMES IT WAS AN AGE OF WISDOM AND AN AGE OF UTTER FOOLISHNESS | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 63 | 63 | cipher_museum | 2.0 | public | null | null |
affine-v2-0208 | GWRDN PWR HBOORG ANLNLENA GWN UBDG BAN HROKNLONK GR ANUNBG ZG BD UWZIRDRUWNA DBOGBVBOB REDNAMNK | GWRDN PWR HBOORG ANLNLENA GWN UBDG BAN HROKNLONK GR ANUNBG ZG BD UWZIRDRUWNA DBOGBVBOB REDNAMNK | THOSE WHO CANNOT REMEMBER THE PAST ARE CONDEMNED TO REPEAT IT AS PHILOSOPHER SANTAYANA OBSERVED | affine | affine | substitution | {
"a": 3,
"b": 1
} | beginner | en | 81 | 95 | cipher_museum | 2.0 | public | null | null |
cda-0002357 | QB ABG PBASHFR BOSHFPNGVBA JVGU RAPELCGVBA CRRE ERIVRJ NAQ ERCEBQHPVOVYVGL ZNGGRE VA ERFRNEPU GUR SEVRQZNA GRFG HFRF GUR VAQRK BS PBVAPVQRAPR GB RFGVZNGR XRL YRATGU FYBJYL | QB ABG PBASHFR BOSHFPNGVBA JVGU RAPELCGVBA CRRE ERIVRJ NAQ ERCEBQHPVOVYVGL ZNGGRE VA ERFRNEPU GUR SEVRQZNA GRFG HFRF GUR VAQRK BS PBVAPVQRAPR GB RFGVZNGR XRL YRATGU FYBJYL | DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH SLOWLY | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 146 | 146 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
jefferson-disk-v2-0165 | OZGIXXMLWDYDBXSIQRIHOIQEDXQAQESHNOWJTFSEBDSZNKBCXXBDEMYXQVXTLUKZYUZUIOSE | OZGIXXMLWDYDBXSIQRIHOIQEDXQAQESHNOWJTFSEBDSZNKBCXXBDEMYXQVXTLUKZYUZUIOSE | WE SHALL FIGHT ON THE BEACHES AND WE SHALL FIGHT ON THE LANDING GROUNDS AND IN THE FIELDS | jefferson_disk | jefferson_disk | disk | {
"type": "disk_order",
"value": "6,1,4,2,5,3"
} | expert | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
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