id stringlengths 7 52 | text stringlengths 6 2.11k | ciphertext stringlengths 6 2.11k | plaintext stringlengths 6 282 | label stringclasses 81
values | cipher stringclasses 81
values | cipher_family stringclasses 13
values | key unknown | difficulty stringclasses 7
values | language stringclasses 8
values | text_length int64 6 1.09k | length int64 6 1.28k | source stringclasses 2
values | dataset_version stringclasses 2
values | split stringclasses 1
value | attack_methods listlengths 0 3 ⌀ | educational_note stringclasses 32
values |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
cda-0017139 | 66 36 82 68 59 66 69 55 82 43 52 50 65 36 82 80 82 73 66 82 29 11 61 66 36 82 55 82 43 89 50 66 36 66 36 82 65 57 68 50 29 66 82 73 66 50 66 61 82 57 76 66 69 77 69 80 80 69 89 | 66 36 82 68 59 66 69 55 82 43 52 50 65 36 82 80 82 73 66 82 29 11 61 66 36 82 55 82 43 89 50 66 36 66 36 82 65 57 68 50 29 66 82 73 66 50 66 61 82 57 76 66 69 77 69 80 80 69 89 | THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF TOMORROW | wallis_cipher | wallis_cipher | null | {} | medium | en | 59 | 59 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
gronsfeld-v3-0931 | VPGSGWFWCKOJIWKGULBZWIIVTHYENOQFHMOIFMTTRUAPXWIPJBLOKBTGULBZZJWEUPCIHOQTAJZKULFGGNMTYLPRPLROITUZOMHTRSEOIHULJYDQTSUDDLUUNOSXRHEKFNDTKVOGFHXKVUISTSIMMUVPTIEIPVUCRNMMRHORJG | VPGSGWFWCKOJIWKGULBZWIIVTHYENOQFHMOIFMTTRUAPXWIPJBLOKBTGULBZZJWEUPCIHOQTAJZKULFGGNMTYLPRPLROITUZOMHTRSEOIHULJYDQTSUDDLUUNOSXRHEKFNDTKVOGFHXKVUISTSIMMUVPTIEIPVUCRNMMRHORJG | SOCRATES BELIEVED THAT THE UNEXAMINED LIFE IS NOT WORTH LIVING AND THAT WISDOM BEGINS WITH THE ADMISSION OF ONES OWN IGNORANCE THIS APPROACH TO KNOWLEDGE HAS GUIDED WESTERN PHILOSOPHY FOR TWO MILLENNIA | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "31416"
} | intermediate | en | 170 | 170 | cipher_museum | 2.0 | public | null | null |
diana-v2-0641 | QUBNEJEHEYLRYB | QUBNEJEHEYLRYB | TARGET ACQUIRED | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
bifid-073 | GHDOHKQMZQTUPOA | GHDOHKQMZQTUPOA | MEET AT THE OLD OAK | bifid | bifid | fractionation | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
geheimschreiber-108 | IZCBSDVBLZZKHZVRYWRXJDNHWTNUAEDTLGIBNSQMAZIFTHJDWDTRWRUV | IZCBSDVBLZZKHZVRYWRXJDNHWTNUAEDTLGIBNSQMAZIFTHJDWDTRWRUV | IF YOU KNOW BOTH YOURSELF AND YOUR ENEMY YOU NEED NOT FEAR THE RESULT | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 56 | 56 | cipher_museum | 0.2 | public | null | null |
m94-123 | JFOLSNIINDFEPEKCN | JFOLSNIINDFEPEKCN | THE EAGLE HAS LANDED | m94 | m94 | machine | {
"type": "seed",
"value": "SECRET"
} | expert | en | 17 | 17 | cipher_museum | 0.2 | public | null | null |
cda-0019310 | 9.3.10 16.2.2 2.1.5 9.4.4 9.4.2 14.1.7 3.2.5 19.5.1 13.2.9 8.4.7 13.5.3 16.2.7 1.2.4 3.4.1 13.6.3 6.2.6 10.2.2 16.4.7 4.3.6 9.1.5 11.1.3 14.6.10 20.6.5 17.1.5 5.1.7 10.3.9 2.2.6 2.5.10 4.3.6 14.4.5 14.4.9 4.6.10 10.3.4 20.2.10 5.2.4 18.2.9 18.5.5 15.6.10 16.2.4 12.5.6 16.2.4 2.4.8 14.6.4 9.1.9 11.5.2 18.2.10 18.3.8 8.2... | 9.3.10 16.2.2 2.1.5 9.4.4 9.4.2 14.1.7 3.2.5 19.5.1 13.2.9 8.4.7 13.5.3 16.2.7 1.2.4 3.4.1 13.6.3 6.2.6 10.2.2 16.4.7 4.3.6 9.1.5 11.1.3 14.6.10 20.6.5 17.1.5 5.1.7 10.3.9 2.2.6 2.5.10 4.3.6 14.4.5 14.4.9 4.6.10 10.3.4 20.2.10 5.2.4 18.2.9 18.5.5 15.6.10 16.2.4 12.5.6 16.2.4 2.4.8 14.6.4 9.1.9 11.5.2 18.2.10 18.3.8 8.2... | FAIL CLOSED IS A POSTURE NOT A SLOGAN DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS | arnold_andre | arnold_andre | null | {} | medium | en | 78 | 78 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
cda-0010810 | FHOF GVGH GVBA PVCU REFZ NCRN PUYR GGRE GBNQ VSSR ERAG YRGG RECR REER IVRJ NAQE RCEB QHPV OVYV GLZN GGRE VAER FRNE PU | FHOF GVGH GVBA PVCU REFZ NCRN PUYR GGRE GBNQ VSSR ERAG YRGG RECR REER IVRJ NAQE RCEB QHPV OVYV GLZN GGRE VAER FRNE PU | SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 94 | 94 | synthetic_educational | null | null | [] | |
trifid-v3-0277 | COVTDKQIKOYDGJTCXUTPE+ICCA+CFBI+HBGUDJSNYIJ+KORDLLBMB+YOPHWNQPGQTNJCKYYULCLEEESUE | COVTDKQIKOYDGJTCXUTPE+ICCA+CFBI+HBGUDJSNYIJ+KORDLLBMB+YOPHWNQPGQTNJCKYYULCLEEESUE | DARWIN OBSERVED THAT SPECIES EVOLVE THROUGH NATURAL SELECTION OVER VAST SPANS OF GEOLOGIC TIME | trifid | trifid | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
copiale-v2-0289 | O4 U1 J8 N1 A6 P5 P6 O7 Y0 U1 I0 P9 V6 O4 D0 T4 E1 U2 P9 V6 S9 N4 I0 D0 O4 | O4 U1 J8 N1 A6 P5 P6 O7 Y0 U1 I0 P9 V6 O4 D0 T4 E1 U2 P9 V6 S9 N4 I0 D0 O4 | SICUT PATRIBUS SIT DEUS NOBIS | copiale | copiale | substitution | {
"type": "keyword",
"value": "MYSTERY"
} | advanced | en | 50 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0009348 | CBYL OYCU OPRG VQQV CVRE FHFS ZHYG VCYN OYCV OPSG FVVS GFNB YHZA OEGE OAFC BFNG VBAE SOQF PBYH ZAFV AXRL BERR E | CBYL OYCU OPRG VQQV CVRE FHFS ZHYG VCYN OYCV OPSG FVVS GFNB YHZA OEGE OAFC BFNG VBAE SOQF PBYH ZAFV AXRL BERR E | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER | porta | porta | null | {
"key": "CIPHER"
} | hard | en | 89 | 89 | synthetic_educational | null | null | [] | |
cda-0019469 | NIQE TUNQ RCOB SKSQ VHKW JUEL EWGM SMVI LYHD KWPT TVYR ZIJM XEFP HXAI RZRS CCHY MNFF RYBO NMGN CUOU VPRK GNJW FEQ | NIQE TUNQ RCOB SKSQ VHKW JUEL EWGM SMVI LYHD KWPT TVYR ZIJM XEFP HXAI RZRS CCHY MNFF RYBO NMGN CUOU VPRK GNJW FEQ | PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY | one_time_pad | one_time_pad | null | {} | hard | en | 91 | 91 | synthetic_educational | null | null | [
"information_theoretic_proof",
"key_reuse_attack"
] | One-time pad: theoretically unbreakable if key is truly random and never reused. |
argenti-v3-0006 | 14 41 22 52 57 73 88 44 43 32 25 69 87 66 82 45 | 14 41 22 52 57 73 88 44 43 32 25 69 87 66 82 45 | THE GATES HOLD FIRM | argenti | argenti | nomenclator | {
"type": "seed",
"value": "ROME"
} | expert | en | 32 | 47 | cipher_museum | 2.0 | public | null | null |
cda-0020042 | 6312 02547 01586 03816 02829 00667 05661 00319 05661 7905 05045 5750 01636 6029 01596 5742 06992 1574 06062 03533 04491 4711 07320 3843 01650 01266 2264 1608 1961 4740 05696 6324 02556 01623 00943 4774 4151 04092 06656 4477 2867 6332 7912 6354 02513 1570 1888 5712 02843 1597 1258 4097 00385 04419 06377 01631 06043 6304... | 6312 02547 01586 03816 02829 00667 05661 00319 05661 7905 05045 5750 01636 6029 01596 5742 06992 1574 06062 03533 04491 4711 07320 3843 01650 01266 2264 1608 1961 4740 05696 6324 02556 01623 00943 4774 4151 04092 06656 4477 2867 6332 7912 6354 02513 1570 1888 5712 02843 1597 1258 4097 00385 04419 06377 01631 06043 6304... | THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS | zimmermann | zimmermann | null | {} | hard | en | 179 | 179 | synthetic_educational | null | null | [
"codebook_frequency",
"number_group_analysis"
] | Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher. |
chaocipher-v2-0433 | REJBJIXXUECBGOVJPVYZDUOXEOBIOJJULKZDHLMTFVJWVMXWUXLGZEOQHEKFCIYROXJOOQZNOUY | REJBJIXXUECBGOVJPVYZDUOXEOBIOJJULKZDHLMTFVJWVMXWUXLGZEOQHEKFCIYROXJOOQZNOUY | ARMY OF NORTHERN VIRGINIA SURRENDERS AT APPOMATTOX COURTHOUSE THE WAR IN THE EAST IS OVER | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "JUSTICE"
} | advanced | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
porta-v2-0499 | XUAVDPDFHVCFSGITONOIJVDXOLVVAUJWXZMTPUOTWTDRFKTERTMDPDSDAZMVPTWVDPVVIESCDOXJFJEFTASRXNRVRFFMHCASONOSSCXEXKMPDTDTALIEOCGESMHWACJWXDMXJTWBFPJTMKTPWTLZQP | XUAVDPDFHVCFSGITONOIJVDXOLVVAUJWXZMTPUOTWTDRFKTERTMDPDSDAZMVPTWVDPVVIESCDOXJFJEFTASRXNRVRFFMHCASONOSSCXEXKMPDTDTALIEOCGESMHWACJWXDMXJTWBFPJTMKTPWTLZQP | AFTER AN UNEQUIVOCAL EXPERIENCE OF THE INEFFICIENCY OF THE SUBSISTING FEDERAL GOVERNMENT YOU ARE CALLED UPON TO DELIBERATE ON A NEW CONSTITUTION FOR THE UNITED STATES OF AMERICA | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "VENICE"
} | intermediate | en | 150 | 150 | cipher_museum | 2.0 | public | null | null |
cda-0014701 | . .... .. .... .. .. .... .. . . ... ..... .. ... . . ... ... . .... .... .... .... .. .. .... .. .. .... .. . . ... ..... .. ... .. . .... .. . ..... .... . .... ..... . ..... ... ... . ... .. .... . ..... .... ... . ..... ..... ... ... ..... ... .... .... ... . ..... .... ... .. ..... | . .... .. .... .. .. .... .. . . ... ..... .. ... . . ... ... . .... .... .... .... .. .. .... .. .. .... .. . . ... ..... .. ... .. . .... .. . ..... .... . .... ..... . ..... ... ... . ... .. .... . ..... .... ... . ..... ..... ... ... ..... ... .... .... ... . ..... .... ... .. ..... | DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS THE MESSAGE WAS HIDDEN BUT NOT SECURE MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY FAIL CLOSED IS A POSTURE NOT A SLOGAN TODAY | tap_code | tap_code | null | {} | hard | en | 158 | 158 | 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-0014765 | BE / A-KHA / TSAH / A-KHA / THAN-ZIE / MOASI / A-KHA / TSAH / MA-E / NO-DA-IH / DIBEH / DZEH / A-KHA / SHUSH / MA-E / NO-DA-IH / DIBEH / MOASI / WOL-LA-CHEE / THAN-ZIE / TKIN / A-KHA / TSAH / GLOE-IH / TKIN / THAN-ZIE ... | BE / A-KHA / TSAH / A-KHA / THAN-ZIE / MOASI / A-KHA / TSAH / MA-E / NO-DA-IH / DIBEH / DZEH / A-KHA / SHUSH / MA-E / NO-DA-IH / DIBEH / MOASI / WOL-LA-CHEE / THAN-ZIE / TKIN / A-KHA / TSAH / GLOE-IH / TKIN / THAN-ZIE ... | DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH | navajo_code | navajo_code | null | {} | hard | en | 194 | 194 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
affine-265 | UOVWRAW OU SCVLWR | UOVWRAW OU SCVLWR | SILENCE IS GOLDEN | affine | affine | substitution | {
"a": 11,
"b": 4
} | beginner | en | 15 | 17 | cipher_museum | 0.2 | public | null | null |
cda-0012748 | THAN ZIEL INDZ EHKL IZZI EWOL LACH EEDI BEHT KIND IBEH KLIZ ZIET KIND ZEHA LANA SDZO HWOL LACH EENA ASTS OSIT KINT SAHW OLLA CHEE THAN ZIET KINA KHAT SAHM AETK INTS AHBE DIBE HGAH DZEH CLAG IAIH DZEH WOLL ACHE ETHA NZIE DZEH BETH ANZI EGAH TKIN AHJA HGAH WOLL ACHE E | THAN ZIEL INDZ EHKL IZZI EWOL LACH EEDI BEHT KIND IBEH KLIZ ZIET KIND ZEHA LANA SDZO HWOL LACH EENA ASTS OSIT KINT SAHW OLLA CHEE THAN ZIET KINA KHAT SAHM AETK INTS AHBE DIBE HGAH DZEH CLAG IAIH DZEH WOLL ACHE ETHA NZIE DZEH BETH ANZI EGAH TKIN AHJA HGAH WOLL ACHE E | THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES | navajo_code | navajo_code | null | {} | hard | en | 213 | 213 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
kl7-v3-0168 | EFAWWFWLORYWBDWIDBXBDTALYGHDVXXQDSCKIFCDOAJBEJDQDFOIAFYMKBDVDJDRJJQVUYGVJQ | EFAWWFWLORYWBDWIDBXBDTALYGHDVXXQDSCKIFCDOAJBEJDQDFOIAFYMKBDVDJDRJJQVUYGVJQ | GENERAL PATTON LED THE THIRD ARMY IN A DARING SWEEP ACROSS FRANCE FOLLOWING THE BREAKOUT | kl7 | kl7 | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
kl7-v3-0004 | SZYBDBLPPJGHYBCFUFKM | SZYBDBLPPJGHYBCFUFKM | THE LEGIONS STAND READY | kl7 | kl7 | machine | {
"type": "seed",
"value": "NATO"
} | expert | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v2-0445 | EINFUGAWABBABBIJWPEHAIAPUGXFASEANRUIMIGXFAUMDXFAPBEGTTBMIAEFTNNERTIKVXFASIMHAWNDVAUOC | EINFUGAWABBABBIJWPEHAIAPUGXFASEANRUIMIGXFAUMDXFAPBEGTTBMIAEFTNNERTIKVXFASIMHAWNDVAUOC | IN THE BEGINNING GOD CREATED THE HEAVEN AND THE EARTH AND DARKNESS WAS UPON THE FACE OF DEEP | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 85 | 85 | cipher_museum | 2.0 | public | null | null |
voynich-render-v2-0074 | qdyirrikgdq gcd drdlu nixkgkir ore qdniqg aoyp adsiqd rkhcgsoff jkgc o szff xgqdrhgc yizrg | qdyirrikgdq gcd drdlu nixkgkir ore qdniqg aoyp adsiqd rkhcgsoff jkgc o szff xgqdrhgc yizrg | RECONNOITER THE ENEMY POSITION AND REPORT BACK BEFORE NIGHTFALL WITH A FULL STRENGTH COUNT | voynich_render | voynich_render | substitution | {
"type": "none",
"value": null
} | expert | en | 77 | 90 | cipher_museum | 2.0 | public | null | null |
slidex-v2-0015 | UMDOCZZUDLVHDZRD | UMDOCZZUDLVHDZRD | ABORT AND WITHDRAW | slidex | slidex | transposition | {
"type": "keyword",
"value": "BLETCHLEY"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
copiale-v3-0013 | B1 L1 R8 K0 B8 N3 S6 O6 R1 S3 T7 T8 P5 Z1 T0 B7 X7 D0 T1 S0 O2 | B1 L1 R8 K0 B8 N3 S6 O6 R1 S3 T7 T8 P5 Z1 T0 B7 X7 D0 T1 S0 O2 | THE CASTLE IS SURROUNDED | copiale | copiale | substitution | {
"type": "keyword",
"value": "MASONIC"
} | advanced | en | 42 | 62 | cipher_museum | 2.0 | public | null | null |
enigma-217 | CFJSVQWMDCYVPTURUFGKRJBTMIVZCIBHVUYLJIDWOV | CFJSVQWMDCYVPTURUFGKRJBTMIVZCIBHVUYLJIDWOV | GIVE ME LIBERTY OR GIVE ME DEATH SAID PATRICK HENRY | enigma | enigma | machine | {
"type": "rotor_start",
"value": "RMS"
} | expert | en | 42 | 42 | cipher_museum | 0.2 | public | null | null |
adfgx-v2-0322 | DAAGAGXAGFXAFDDDDAFGFADDFGAGXAAFDDAGXAGDFGDAAFGAAAXGFADXDDDFAAXDFDDFAGGFGFDFFDGFDXGDXFGAFXADFFDAFGDGDAGXGXDFDXXDFADDGDAGXDGGFFDGAFFDDADGXADDGFDFGDFADDAFFGGXGGAF | DAAGAGXAGFXAFDDDDAFGFADDFGAGXAAFDDAGXAGDFGDAAFGAAAXGFADXDDDFAAXDFDDFAGGFGFDFFDGFDXGDXFGAFXADFFDAFGDGDAGXGXDFDXXDFADDGDAGXDGGFFDGAFFDDADGXADDGFDFGDFADDAFFGGXGGAF | THE BABINGTON PLOT TO ASSASSINATE QUEEN ELIZABETH WAS UNCOVERED BY FRANCIS WALSINGHAM IN TIME | adfgx | adfgx | fractionation | {
"polybius": "TRIUMPH",
"columnar": "JUSTICE"
} | advanced | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
polybius-v3-0033 | 54 11 33 25 15 15 14 34 34 14 31 15 | 54 11 33 25 15 15 14 34 34 14 31 15 | YANKEE DOODLE | polybius | polybius | substitution | {
"type": "none",
"value": null
} | beginner | en | 24 | 35 | cipher_museum | 2.0 | public | null | null |
jn25-099 | 37187 37196 37199 37191 37102 37195 37186 37187 37182 37103 37196 37199 37190 37191 37189 37186 37183 37196 37193 37185 37182 37195 37185 37191 37189 37186 37183 37199 37182 37103 37186 37104 37189 37196 37185 37182 37199 37186 37191 37196 37182 37184 37191 | 37187 37196 37199 37191 37102 37195 37186 37187 37182 37103 37196 37199 37190 37191 37189 37186 37183 37196 37193 37185 37182 37195 37185 37191 37189 37186 37183 37199 37182 37103 37186 37104 37189 37196 37185 37182 37199 37186 37191 37196 37182 37184 37191 | FORTUNE FAVORS THE BOLD AND THE BRAVE WHO DARE TO ACT | jn25 | jn25 | codebook | {
"type": "additive",
"value": "27182"
} | expert | en | 215 | 257 | cipher_museum | 0.2 | public | null | null |
caesar-de-097 | HYILPA THJOA MYLP | HYILPA THJOA MYLP | ARBEIT MACHT FREI | caesar | caesar | substitution | {
"type": "shift",
"value": 7
} | beginner | de | 15 | 17 | cipher_museum | 0.2 | public | null | null |
playfair-it-005 | UOSYQHKMEQTGEKEKBQRVGUKPFPACHFCNQFKPEKAHKGHQFIAHACSYQH | UOSYQHKMEQTGEKEKBQRVGUKPFPACHFCNQFKPEKAHKGHQFIAHACSYQH | TUTTI GLI UOMINI NASCONO LIBERI ED EGUALI IN DIGNITA E DIRITTI | playfair | playfair | substitution | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | it | 54 | 54 | cipher_museum | 0.2 | public | null | null |
wheatstone-v3-0246 | JABQUPASWEIAIUSLKIA | JABQUPASWEIAIUSLKIA | MEASURE TWICE CUT ONCE | wheatstone | wheatstone | polygraphic | {
"type": "keyword",
"value": "BRITAIN"
} | advanced | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
affine-v3-0073 | ISLZZLK HYL AOL TLLR MVY AOLF ZOHSS PUOLYPA AOL LHYAO HUK AOL WLHJLTHRLYZ ZOHSS IL JHSSLK ZVUZ | ISLZZLK HYL AOL TLLR MVY AOLF ZOHSS PUOLYPA AOL LHYAO HUK AOL WLHJLTHRLYZ ZOHSS IL JHSSLK ZVUZ | BLESSED ARE THE MEEK FOR THEY SHALL INHERIT THE EARTH AND THE PEACEMAKERS SHALL BE CALLED SONS | affine | affine | substitution | {
"a": 1,
"b": 7
} | beginner | en | 78 | 94 | cipher_museum | 2.0 | public | null | null |
cda-0002843 | TIGEI XZSMB CZZFG WENOA YMAQF DMFVK SILHQ UCVQE QZXFX YMKNF LBIQN HWFEZ BQODK FHTCD MLNWA PCBUS GHZJT PNNXP YLYCE NKTFB KOGSH NRRPD GSXQK MQGWR SZHAY MORQD MVNWM URLIU ZSMOS IIYAY NNAKR QOQAP IFYBZ NCFZP SGJRA GNTEK YCITV UMGAA QXX | TIGEI XZSMB CZZFG WENOA YMAQF DMFVK SILHQ UCVQE QZXFX YMKNF LBIQN HWFEZ BQODK FHTCD MLNWA PCBUS GHZJT PNNXP YLYCE NKTFB KOGSH NRRPD GSXQK MQGWR SZHAY MORQD MVNWM URLIU ZSMOS IIYAY NNAKR QOQAP IFYBZ NCFZP SGJRA GNTEK YCITV UMGAA QXX | THE BEST LESSONS SHOW WHERE THE METHOD FAILS KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | trithemius | trithemius | null | {} | hard | en | 193 | 193 | synthetic_educational | null | null | [
"progressive_shift_detection",
"frequency_analysis"
] | Trithemius: progressive Caesar (shift = letter position); no key needed. |
fialka-v3-0240 | OISMKZDIMITTLHQREFSHHBEIX | OISMKZDIMITTLHQREFSHHBEIX | THE SHOT HEARD ROUND THE WORLD | fialka | fialka | machine | {
"type": "seed",
"value": "SOVIET"
} | expert | en | 25 | 25 | cipher_museum | 2.0 | public | null | null |
enigma-321 | KWXQICXTDHRBYXKXAQ | KWXQICXTDHRBYXKXAQ | THE BRIDGE IS SECURED | enigma | enigma | machine | {
"type": "rotor_start",
"value": "DOG"
} | expert | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
sigaba-v2-0283 | HKFAMZJSURRK | HKFAMZJSURRK | VENI VIDI VICI | sigaba | sigaba | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 12 | 12 | cipher_museum | 2.0 | public | null | null |
bacon-cipher-024 | BAABA BAAAA BAABB BAAAB BAABA ABBAA ABBAB ABBAB ABBAA AABAA | BAABA BAAAA BAABB BAAAB BAABA ABBAA ABBAB ABBAB ABBAA AABAA | TRUST NO ONE | bacon_cipher | bacon_cipher | steganography | {
"type": "none",
"value": null
} | beginner | en | 50 | 59 | cipher_museum | 0.2 | public | null | null |
vigenere-021 | ELQPETHSSVDWQQHCIP | ELQPETHSSVDWQQHCIP | THE BRIDGE IS SECURED | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "LEMON"
} | intermediate | en | 18 | 18 | cipher_museum | 0.2 | public | null | null |
cda-0011626 | B WUVQOH GMEKN OIFHU TUVPRI FWMEIPDF MOHGY PJ DSKODMEIPDF QFEUVSIT PGUUIS JTFRYFREZ EMTXTJCYUMQO ISOIUUMC | B WUVQOH GMEKN OIFHU TUVPRI FWMEIPDF MOHGY PJ DSKODMEIPDF QFEUVSIT PGUUIS JTFRYFREZ EMTXTJCYUMQO ISOIUUMC | A STRONG CLAIM NEEDS STRONG EVIDENCE INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION HONESTLY | gronsfeld | gronsfeld | null | {
"key": "141421"
} | hard | en | 92 | 92 | synthetic_educational | null | null | [] | |
four-square-185 | PRGSGLSDGKOCHPCZ | PRGSGLSDGKOCHPCZ | MEET AT THE OLD OAK | four_square | four_square | polygraphic | {
"key1": "ENIGMA",
"key2": "CRYPTO"
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
nihilist-v2-0050 | 45 47 79 66 47 46 45 37 88 68 48 50 43 46 75 68 38 59 32 24 86 88 44 49 45 43 87 87 58 29 46 55 96 59 28 59 64 47 86 86 48 67 65 37 56 88 44 58 46 24 57 57 56 27 75 36 79 79 35 49 52 36 69 88 57 46 34 25 77 79 55 57 56 64 | 45 47 79 66 47 46 45 37 88 68 48 50 43 46 75 68 38 59 32 24 86 88 44 49 45 43 87 87 58 29 46 55 96 59 28 59 64 47 86 86 48 67 65 37 56 88 44 58 46 24 57 57 56 27 75 36 79 79 35 49 52 36 69 88 57 46 34 25 77 79 55 57 56 64 | GOOD NIGHT GOOD NIGHT PARTING IS SUCH SWEET SORROW THAT I SHALL SAY GOOD NIGHT TILL MORROW | nihilist | nihilist | fractionation | {
"polybius": "PALACE",
"keyword": "BATTLE"
} | advanced | en | 148 | 221 | cipher_museum | 2.0 | public | null | null |
solitaire-103 | LBKILAZCXHFIKTVFYVREPOMCHCSKRKDWUKRWPFSUILEMVJN | LBKILAZCXHFIKTVFYVREPOMCHCSKRKDWUKRWPFSUILEMVJN | THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG NEAR THE RIVER | solitaire | solitaire | stream | {
"type": "passphrase",
"value": "CRYPTONOMICON"
} | expert | en | 47 | 47 | cipher_museum | 0.2 | public | null | null |
cda-0003487 | BHRKNALAANTLEGLYEENBHTDUSRUOSSIETIYOBRHNELOIWTESOVDRSOETDMCRNABDAAOYERBAUMPRTSNNXQUEEHTEASEAIELSFEGTHNTPORBNRNUESLPOPCEONHEYCT | BHRKNALAANTLEGLYEENBHTDUSRUOSSIETIYOBRHNELOIWTESOVDRSOETDMCRNABDAAOYERBAUMPRTSNNXQUEEHTEASEAIELSFEGTHNTPORBNRNUESLPOPCEONHEYCT | MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY ATBASH ENCODES BY REVERSING THE ALPHABET HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | double_transposition | double_transposition | null | {
"key1": "MUSEUM",
"key2": "FREEDOM"
} | hard | en | 126 | 126 | synthetic_educational | null | null | [
"key_length_search",
"anagram_recovery"
] | Double columnar transposition: apply columnar twice for stronger security. |
cda-0013654 | UCZA ERKB DQJI PNAA AEFT JQUJ XIWL KNAS FHKL TZUV WZLV VYUO JXYZ QFLV ZAKL TSZG ZKBC YDRG FDDJ VYAG MTPQ YSCC LDQV ZXUZ LHRG FUIQ EQKX JYAK GSWK SLDY BXTZ HNRA NYBU ONTD ARQF XWVF RWIX FPOW ETHI MLPX SNPM OOND BNVK WTNU WJVV TYDS EPFH UFFF UOXM | UCZA ERKB DQJI PNAA AEFT JQUJ XIWL KNAS FHKL TZUV WZLV VYUO JXYZ QFLV ZAKL TSZG ZKBC YDRG FDDJ VYAG MTPQ YSCC LDQV ZXUZ LHRG FUIQ EQKX JYAK GSWK SLDY BXTZ HNRA NYBU ONTD ARQF XWVF RWIX FPOW ETHI MLPX SNPM OOND BNVK WTNU WJVV TYDS EPFH UFFF UOXM | CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS KERCKHOFFS PRINCIPLE SAYS THE SYSTEM MUST BE SECURE EVEN IF ENEMY KNOWS ALGORITHM | vernam | vernam | null | {} | hard | en | 196 | 196 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
alberti-disk-v2-0055 | CPIBQFJQONTFMKBSNHIPRVZYZZHOHSBYGXGZBZNTWWBURYVDVOCFVPFMLHJVZDGAMMKGHYTVRAT | CPIBQFJQONTFMKBSNHIPRVZYZZHOHSBYGXGZBZNTWWBURYVDVOCFVPFMLHJVZDGAMMKGHYTVRAT | ARMY OF NORTHERN VIRGINIA SURRENDERS AT APPOMATTOX COURTHOUSE THE WAR IN THE EAST IS OVER | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 4
} | expert | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
joseon-yeokhak-v2-0014 | XZMAABPMIBBIKS | XZMAABPMIBBIKS | PRESS THE ATTACK | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "SEOUL"
} | beginner | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0021511 | -... . .- ..- ..-. --- .-. - / .. ... / - .... . / .-. . -.-. .. .--. .-. --- -.-. .- .-.. / --- ..-. / ...- .. --. . -. . .-. . / .- -. -.. / -.. . -.-. .-. -.-- .--. - ... / .. - ... . .-.. ..-. / .... .. .-.. .-.. / -.-. .. .--. .... . .-. / ..- ... . ... / .-.. .. -. . .- .-. / .- .-.. --. . -... .-. .- / - --- / .... | -... . .- ..- ..-. --- .-. - / .. ... / - .... . / .-. . -.-. .. .--. .-. --- -.-. .- .-.. / --- ..-. / ...- .. --. . -. . .-. . / .- -. -.. / -.. . -.-. .-. -.-- .--. - ... / .. - ... . .-.. ..-. / .... .. .-.. .-.. / -.-. .. .--. .... . .-. / ..- ... . ... / .-.. .. -. . .- .-. / .- .-.. --. . -... .-. .- / - --- / .... | BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG | morse_code | morse_code | null | {} | hard | en | 199 | 199 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
adfgx-v3-0056 | GGGGDGDXXAXXGXXXFGDGXGGXGFFXDXDAFFFGFFAAAGADAGFAAAGGXGXDGDXDGFGDFXXGDXGFFGFAFDGGGDAFADAGADFAFFFDFADFGDFADFFXDAAFAAGFAXXFADAXGFGXFFDDDGFXGXDADD | GGGGDGDXXAXXGXXXFGDGXGGXGFFXDXDAFFFGFFAAAGADAGFAAAGGXGXDGDXDGFGDFXXGDXGFFGFAFDGGGDAFADAGADFAFFFDFADFGDFADFFXDAAFAAGFAXXFADAXGFGXFFDDDGFXGXDADD | TO INFINITY AND BEYOND THE FRONTIER OF HUMAN KNOWLEDGE CALLS TO EACH GENERATION ANEW | adfgx | adfgx | fractionation | {
"polybius": "PALACE",
"columnar": "BATTLE"
} | advanced | en | 142 | 142 | cipher_museum | 2.0 | public | null | null |
kryptos-v3-0008 | DYMJJJGMMQJSAZMJ | DYMJJJGMMQJSAZMJ | THE SENATE DECREES | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "SHADOW"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
hill-v2-0088 | JZWYDQLVNNFWKFREFAAVVOWBPYDPDXGUJNPBKSJINPYONOYBWARSWATSWMXDZVUUBJYAGFWAIHMSXSXH | JZWYDQLVNNFWKFREFAAVVOWBPYDPDXGUJNPBKSJINPYONOYBWARSWATSWMXDZVUUBJYAGFWAIHMSXSXH | CLAUDE SHANNON PROVED THAT THE ONE TIME PAD ACHIEVES PERFECT SECRECY WHEN USED CORRECTLY ONCE | hill | hill | polygraphic | {
"a": 3,
"b": 5,
"c": 2,
"d": 9
} | advanced | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
cda-0014219 | ⌐ K ¬ ⌐ X r· L ─ r ┘· Γ L X ¬ ⌒· ┌· L K· L ┌· X Γ· ─ ¬· K r· L ⌐ └ ┐· r· ⌐ ¬ L K | ⌐ K ¬ ⌐ X r· L ─ r ┘· Γ L X ¬ ⌒· ┌· L K· L ┌· X Γ· ─ ¬· K r· L ⌐ └ ┐· r· ⌐ ¬ L K | ATBASH ENCODES BY REVERSING THE ALPHABET | pigpen | pigpen | null | {} | easy | en | 17 | 17 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
geez-monastic-v3-0283 | UFMEVHQYMLVCWUFVHZWYAGJPMZXMDJYZSJUFWZJYDPMZUMNWZPWVURHSQVUMPVYDWDVJYIFJYW | UFMEVHQYMLVCWUFVHZWYAGJPMZXMDJYZSJUFWZJYDPMZUMNWZPWVURHSQVUMPVYDWDVJYIFJYW | THE JOURNEY OF A THOUSAND MILES BEGINS WITH A SINGLE STEP AS LAO TZU WROTE LONG AGO IN CHINA | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "LALIBELA"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
fialka-v2-0322 | HRRJKHBBNINBXASBDIILKGNZTLXYQAPSCWZSVRAHSSIUFEFMUMVFWIZWZVHXQXVPSAVIFSP | HRRJKHBBNINBXASBDIILKGNZTLXYQAPSCWZSVRAHSSIUFEFMUMVFWIZWZVHXQXVPSAVIFSP | QUOTH THE RAVEN NEVERMORE THE BIRD SAT ON THE BUST OF PALLAS JUST ABOVE MY CHAMBER DOOR | fialka | fialka | machine | {
"type": "seed",
"value": "SOVIET"
} | expert | en | 71 | 71 | cipher_museum | 2.0 | public | null | null |
diana-v3-0541 | QNOERURQMFNTLARCQMIPYFCSIX | QNOERURQMFNTLARCQMIPYFCSIX | THE PRINTING PRESS CHANGES ALL | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 26 | 26 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-v2-0129 | 2630226262301423 | 2630226262301423 | HOLD THE LINE | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "LIONSTRACE"
} | advanced | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
cda-0014397 | 20.1.9 20.5.1 16.1.2 7.3.8 3.1.6 19.6.7 10.5.8 14.5.2 18.5.10 11.4.8 20.3.10 14.4.4 5.3.1 9.2.3 10.4.10 6.2.8 6.4.10 4.3.6 10.3.10 15.1.9 17.2.8 3.6.6 20.5.4 19.4.4 16.2.3 4.6.6 5.5.5 2.1.2 8.6.1 10.4.10 13.2.5 7.1.9 4.2.6 13.4.7 5.1.10 8.6.4 14.6.9 18.5.2 13.1.5 9.6.7 16.6.3 12.1.3 12.3.2 1.5.7 13.3.2 6.5.9 14.5.8 9.1... | 20.1.9 20.5.1 16.1.2 7.3.8 3.1.6 19.6.7 10.5.8 14.5.2 18.5.10 11.4.8 20.3.10 14.4.4 5.3.1 9.2.3 10.4.10 6.2.8 6.4.10 4.3.6 10.3.10 15.1.9 17.2.8 3.6.6 20.5.4 19.4.4 16.2.3 4.6.6 5.5.5 2.1.2 8.6.1 10.4.10 13.2.5 7.1.9 4.2.6 13.4.7 5.1.10 8.6.4 14.6.9 18.5.2 13.1.5 9.6.7 16.6.3 12.1.3 12.3.2 1.5.7 13.3.2 6.5.9 14.5.8 9.1... | FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS | arnold_andre | arnold_andre | null | {} | hard | en | 125 | 125 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
cda-0013406 | DIBEH / NO-DA-IH / SHUSH / DIBEH / THAN-ZIE / TKIN / THAN-ZIE / NO-DA-IH / THAN-ZIE / TKIN / A-KHA / TSAH / MOASI / TKIN / CLA-GI-AIH / LIN / DZEH / GAH / DIBEH / NA-AS-TSO-SI / WOL-LA-CHEE / CLA-GI-AIH / DZEH / WOL-LA-CHEE / ... | DIBEH / NO-DA-IH / SHUSH / DIBEH / THAN-ZIE / TKIN / THAN-ZIE / NO-DA-IH / THAN-ZIE / TKIN / A-KHA / TSAH / MOASI / TKIN / CLA-GI-AIH / LIN / DZEH / GAH / DIBEH / NA-AS-TSO-SI / WOL-LA-CHEE / CLA-GI-AIH / DZEH / WOL-LA-CHEE / ... | SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER | navajo_code | navajo_code | null | {} | hard | en | 215 | 215 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
confederate-vigenere-v2-0185 | NMUOMZYIZOJAABGKVJGHOVRVRVFDQGUDCTHPSVGREBJLXOAGZVINDCHQUACUPWAWYMHPQZQV | NMUOMZYIZOJAABGKVJGHOVRVRVFDQGUDCTHPSVGREBJLXOAGZVINDCHQUACUPWAWYMHPQZQV | WE SHALL FIGHT ON THE BEACHES AND WE SHALL FIGHT ON THE LANDING GROUNDS AND IN THE FIELDS | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "RICHMOND"
} | intermediate | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
cda-0009099 | PPNB EQVO IKOE UPQX FYWK MPOB KTLU KSPJ GSXQ KMQG GWYW LLZM ANSD NDAD RFRF ARCN MAFT LVSE QZWH AHPI GUW | PPNB EQVO IKOE UPQX FYWK MPOB KTLU KSPJ GSXQ KMQG GWYW LLZM ANSD NDAD RFRF ARCN MAFT LVSE QZWH AHPI GUW | POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS | trithemius | trithemius | null | {} | hard | en | 83 | 83 | synthetic_educational | null | null | [] | |
kl7-v2-0275 | HQQNKYNKMPTUSWJQOB | HQQNKYNKMPTUSWJQOB | LOOSE LIPS SINK SHIPS | kl7 | kl7 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
vic-v2-0318 | 824390923878067877069119139589088159158438278055847580345718703553491789893748274868843888253871873878301918453955 | 824390923878067877069119139589088159158438278055847580345718703553491789893748274868843888253871873878301918453955 | FREQUENCY ANALYSIS EXPLOITS THE FACT THAT CERTAIN LETTERS APPEAR FAR MORE OFTEN IN ENGLISH TEXT | vic | vic | substitution | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 114 | 114 | cipher_museum | 2.0 | public | null | null |
typex-191 | NGQENPCTKRLWT | NGQENPCTKRLWT | CHANGE OF PLANS | typex | typex | machine | {
"type": "keyword",
"value": "SECRET"
} | expert | en | 13 | 13 | cipher_museum | 0.2 | public | null | null |
diana-v3-0106 | QYQKQHEOYKBAYXFCQG | QYQKQHEOYKBAYXFCQG | CROSS THE RUBICON NOW | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "SPECIAL"
} | intermediate | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
cda-0019076 | depot intel gains right again phase heavy above naval draft three route issue guard radio after place house field radio eight quiet unite enemy north | depot intel gains right again phase heavy above naval draft three route issue guard radio after place house field radio eight quiet unite enemy north | DIGRAPH AND TRIGRAPH FREQUENCIES EXPOSE SIMPLE CIPHERS | 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. |
affine-la-041 | EFS DZEFSD DY DZGSD | EFS DZEFSD DY DZGSD | PER ASPERA AD ASTRA | affine | affine | substitution | {
"type": "keyword",
"value": "7,3"
} | beginner | la | 16 | 19 | cipher_museum | 0.2 | public | null | null |
cardano-autokey-v2-0258 | KALTPSKAAZLPO | KALTPSKAAZLPO | THE PASS IS HELD | cardano_autokey | cardano_autokey | polyalphabetic | {
"type": "keyword",
"value": "ROME"
} | advanced | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
kryha-v2-0043 | QCTJUPCXCQUCWRQCADNJDGDTGUYMNFYBUTKCLKJWUAJYNUGZDRPEUUT | QCTJUPCXCQUCWRQCADNJDGDTGUYMNFYBUTKCLKJWUAJYNUGZDRPEUUT | BREVITY IS THE SOUL OF WIT AND TEDIOUSNESS THE OUTWARD FLOURISHES | kryha | kryha | machine | {
"type": "keyword",
"value": "MUNICH"
} | expert | en | 55 | 55 | cipher_museum | 2.0 | public | null | null |
playfair-la-066 | CLGZIEYY | CLGZIEYY | FIAT LUX | playfair | playfair | substitution | {
"type": "keyword",
"value": "MUSEUM"
} | intermediate | la | 8 | 8 | cipher_museum | 0.2 | public | null | null |
straddling-checkerboard-v3-0240 | 42522325542522102105726214252274502821 | 42522325542522102105726214252274502821 | THE SHOT HEARD ROUND THE WORLD | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "RASTONICEL"
} | advanced | en | 38 | 38 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v3-0309 | LVQPIVMSMRWMBVXKKBVXXZVQWDIZVIZBLVWBVQPIVQWMHWPBESUSLNGRXBZRLKRAKDTFTIRIKLOHXIMVLVQWEXVFNMHLQPIRZVWJJZXDMWIQQSQBEIXHFMTELVBLFRBEBLHNXTPRNXXTOMPIRGBEMSUJFBWRNMTEQMQA | LVQPIVMSMRWMBVXKKBVXXZVQWDIZVIZBLVWBVQPIVQWMHWPBESUSLNGRXBZRLKRAKDTFTIRIKLOHXIMVLVQWEXVFNMHLQPIRZVWJJZXDMWIQQSQBEIXHFMTELVBLFRBEBLHNXTPRNXXTOMPIRGBEMSUJFBWRNMTEQMQA | IN THE SEVENTEENTH CENTURY ISAAC NEWTON SYNTHESIZED THE WORK OF COPERNICUS GALILEO AND KEPLER INTO A UNIFIED THEORY OF GRAVITATION THAT EXPLAINED BOTH THE FALL OF APPLES AND THE ORBITS OF PLANETS | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "DIXIE"
} | intermediate | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
kryha-049 | UQJNFJJQPKFUWQJGIREBCJRJMXEGBMVPTZGYFVRXXZYRTEJNRBZHLJI | UQJNFJJQPKFUWQJGIREBCJRJMXEGBMVPTZGYFVRXXZYRTEJNRBZHLJI | TO BE OR NOT TO BE THAT IS THE QUESTION WHETHER TIS NOBLER IN THE MIND | kryha | kryha | machine | {
"type": "keyword",
"value": "KRYHA"
} | expert | en | 55 | 55 | cipher_museum | 0.2 | public | null | null |
joseon-yeokhak-v2-0180 | OFAMCTHVSDCHCAOQQFCGGSGHVSFODDOVOBBCQYHCBWUVHOPGCZIHSGWZSBQSWGWADSFOHWJSBCK | OFAMCTHVSDCHCAOQQFCGGSGHVSFODDOVOBBCQYHCBWUVHOPGCZIHSGWZSBQSWGWADSFOHWJSBCK | ARMY OF THE POTOMAC CROSSES THE RAPPAHANNOCK TONIGHT ABSOLUTE SILENCE IS IMPERATIVE NOW | joseon_yeokhak | joseon_yeokhak | substitution | {
"type": "keyword",
"value": "JOSEON"
} | beginner | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
red-type-a-v2-0091 | DRIJUNFADJEIBMOKAURWAVIOXNTGUJBAGVBBOKTDIHIAMFPUEGVWMAFNGMIYKLUIZMOCJOGBCIGANKAN | DRIJUNFADJEIBMOKAURWAVIOXNTGUJBAGVBBOKTDIHIAMFPUEGVWMAFNGMIYKLUIZMOCJOGBCIGANKAN | THE SECRET LIES BURIED BENEATH THE THIRD FLAGSTONE OF THE OLD CHURCH COURTYARD AT DAWN TOMORROW | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "SAKURA"
} | advanced | en | 80 | 80 | cipher_museum | 2.0 | public | null | null |
jn25-v2-0268 | 21237 21249 21256 21239 21242 21247 21259 21242 21239 21244 21242 21239 21235 21244 | 21237 21249 21256 21239 21242 21247 21259 21242 21239 21244 21242 21239 21235 21244 | COVER MY RETREAT | jn25 | jn25 | codebook | {
"type": "additive",
"value": "11235"
} | expert | en | 70 | 83 | cipher_museum | 2.0 | public | null | null |
atbash-it-009 | ERMXVIV V ERMXVIVNL | ERMXVIV V ERMXVIVNL | VINCERE E VINCEREMO | atbash | atbash | substitution | {
"type": "none",
"value": null
} | beginner | it | 17 | 19 | cipher_museum | 0.2 | public | null | null |
kryptos-v2-0383 | IHIIVYUGLIIXDTF | IHIIVYUGLIIXDTF | CAVALRY ADVANCES | kryptos | kryptos | polyalphabetic | {
"type": "keyword",
"value": "SANBORN"
} | advanced | en | 15 | 15 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v2-0471 | NFUOAPDVNPIBDWPBTSVSBFTERUOAIEINERBLDXFAVUOXKTAJUGWPIRSVAPBDUFVLFXBPEAGSSMAIPLMGWSTANGSBNBSEIKTQ | NFUOAPDVNPIBDWPBTSVSBFTERUOAIEINERBLDXFAVUOXKTAJUGWPIRSVAPBDUFVLFXBPEAGSSMAIPLMGWSTANGSBNBSEIKTQ | THE PACKAGE CONTAINS BLUEPRINTS FOR THE NEW TORPEDO GUIDANCE SYSTEM DELIVER TO ADMIRAL SMITH NOW | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 96 | 96 | cipher_museum | 2.0 | public | null | null |
cda-0019311 | -... . .- ..- ..-. --- .-. - / .. ... / - .... . / .-. . -.-. .. .--. .-. --- -.-. .- .-.. / --- ..-. / ...- .. --. . -. . .-. . / .- -. -.. / -.. . -.-. .-. -.-- .--. - ... / .. - ... . .-.. ..-. / ..-. .-. . --.- ..- . -. -.-. -.-- / .- -. .- .-.. -.-- ... .. ... / -.-. .- -. / .-. . ...- . .- .-.. / .-- . .- -.- / -... | -... . .- ..- ..-. --- .-. - / .. ... / - .... . / .-. . -.-. .. .--. .-. --- -.-. .- .-.. / --- ..-. / ...- .. --. . -. . .-. . / .- -. -.. / -.. . -.-. .-. -.-- .--. - ... / .. - ... . .-.. ..-. / ..-. .-. . --.- ..- . -. -.-. -.-- / .- -. .- .-.. -.-- ... .. ... / -.-. .- -. / .-. . ...- . .- .-.. / .-- . .- -.- / -... | BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS THE ARCHITECTURE SHOULD MAKE MISUSE HARDER THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER | morse_code | morse_code | null | {} | hard | en | 179 | 179 | synthetic_educational | null | null | [
"symbol_decode",
"frequency_analysis"
] | Morse code: dots and dashes; word-separated by / symbol. |
affine-v2-0994 | CXX SCZVCZM WI LCIMD YP DMUMHRWYP NMPUM SNMP CLXM RY CRRCUO SM GAIR IMMG APCLXM SNMP AIWPE YAZ VYZUMI SM GAIR IMMG WPCURWJM SNMP SM CZM PMCZ SM GAIR GCOM RNM MPMGK LMXWMJM SM CZM VCZ CSCK | CXX SCZVCZM WI LCIMD YP DMUMHRWYP NMPUM SNMP CLXM RY CRRCUO SM GAIR IMMG APCLXM SNMP AIWPE YAZ VYZUMI SM GAIR IMMG WPCURWJM SNMP SM CZM PMCZ SM GAIR GCOM RNM MPMGK LMXWMJM SM CZM VCZ CSCK | 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 | affine | affine | substitution | {
"a": 9,
"b": 2
} | beginner | en | 151 | 187 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-110 | NCURHXLSJETTAAPLSJCNBTTPPMEBMHXRJGAXLXCASBTXABSSAFSSJBMHVATXCD | NCURHXLSJETTAAPLSJCNBTTPPMEBMHXRJGAXLXCASBTXABSSAFSSJBMHVATXCD | THE ART OF WAR IS OF VITAL IMPORTANCE TO THE STATE IT IS LIFE OR DEATH | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 62 | 62 | cipher_museum | 0.2 | public | null | null |
venona-pad-reuse-v3-0253 | XCAEPBCTVVXSOBXUKVP4 | XCAEPBCTVVXSOBXUKVP4 | STEAM POWER TRANSFORMS | venona_pad_reuse | venona_pad_reuse | stream | {
"type": "keyword",
"value": "FREEDOM"
} | expert | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
vigenere-v2-1361 | KSHHJJVYOEKIOSIHZYSJPBQSIDSYHNLBASJZHRHJGIFQYBHMIEKHEIKGSOFULFYWTONHGRTARBYSH | KSHHJJVYOEKIOSIHZYSJPBQSIDSYHNLBASJZHRHJGIFQYBHMIEKHEIKGSOFULFYWTONHGRTARBYSH | DEUTSCHLAND UBER ALLES IN DER WELT WENN ES STETS ZU SCHUTZ UND TRUTZE BRÜDERLICH ZUSAMMENHÄLT | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "HONOR"
} | intermediate | en | 77 | 77 | cipher_museum | 2.0 | public | null | null |
playfair-v3-0838 | PLFGAGEKNLCXTQAMFB | PLFGAGEKNLCXTQAMFB | THE ORACLE HAS SPOKEN | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "DRAGON"
} | intermediate | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
two-square-v3-0288 | ROHCXRTUOTCHILSKBMNEAEYX | ROHCXRTUOTCHILSKBMNEAEYX | ROME WAS NOT BUILT IN ONE DAY | two_square | two_square | polygraphic | {
"key1": "DRAGON",
"key2": "THUNDER"
} | advanced | en | 24 | 24 | cipher_museum | 2.0 | public | null | null |
fialka-023 | LPZFGIBCOMMBV | LPZFGIBCOMMBV | THE KING IS DEAD | fialka | fialka | machine | {
"type": "seed",
"value": "M125"
} | expert | en | 13 | 13 | cipher_museum | 0.2 | public | null | null |
fialka-064 | DDDLVPDRWPSHPOBKMUVQ | DDDLVPDRWPSHPOBKMUVQ | RENDEZVOUS AT MIDNIGHT | fialka | fialka | machine | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 20 | 20 | cipher_museum | 0.2 | public | null | null |
cda-0016992 | three house exact draft eight three extra clear takes input vague exact swift turns under drive intel enemy stage posts along track track enter radio | three house exact draft eight three extra clear takes input vague exact swift turns under drive intel enemy stage posts along track track enter radio | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH | 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. |
m94-v2-0119 | KRTJQVBJLTZAU | KRTJQVBJLTZAU | STAY THE COURSE | m94 | m94 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 13 | 13 | cipher_museum | 2.0 | public | null | null |
enigma-v2-0148 | ORZEXHMOLKPQUOFV | ORZEXHMOLKPQUOFV | DIVIDE AND CONQUER | enigma | enigma | machine | {
"type": "rotor_start",
"value": "DEF"
} | expert | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
commercial-code-037 | JUBAB FIBAB ZUZUZ PAZUZ LAZUZ CAZUZ GAZUZ WAZUZ ZAZUZ GEZUZ XUZUZ BEBAB JUBAB FIBAB ZUZUZ FAZUZ GAZUZ BAZUZ ZAZUZ KAZUZ XUZUZ ZUZUZ XAZUZ BAZUZ LAZUZ FAZUZ XUZUZ ZUZUZ TAZUZ BAZUZ ZAZUZ WAZUZ LAZUZ DAZUZ NAZUZ XUZUZ ZUZUZ KAZUZ GAZUZ RAZUZ WAZUZ GEZUZ XUZUZ | JUBAB FIBAB ZUZUZ PAZUZ LAZUZ CAZUZ GAZUZ WAZUZ ZAZUZ GEZUZ XUZUZ BEBAB JUBAB FIBAB ZUZUZ FAZUZ GAZUZ BAZUZ ZAZUZ KAZUZ XUZUZ ZUZUZ XAZUZ BAZUZ LAZUZ FAZUZ XUZUZ ZUZUZ TAZUZ BAZUZ ZAZUZ WAZUZ LAZUZ DAZUZ NAZUZ XUZUZ ZUZUZ KAZUZ GAZUZ RAZUZ WAZUZ GEZUZ XUZUZ | GIVE ME LIBERTY OR GIVE ME DEATH SAID PATRICK HENRY | commercial_code | commercial_code | codebook | {
"type": "none",
"value": null
} | expert | en | 215 | 257 | cipher_museum | 0.2 | public | null | null |
vic-v3-0272 | 58433871838678678084187384781787791548887888618070879286234888289889191120391355187839186785187831591338692872437857203 | 58433871838678678084187384781787791548887888618070879286234888289889191120391355187839186785187831591338692872437857203 | THE ENIGMA MACHINE HAD AN ASTRONOMICAL NUMBER OF POSSIBLE SETTINGS MAKING IT SEEM UNBREAKABLE | vic | vic | substitution | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 119 | 119 | cipher_museum | 2.0 | public | null | null |
geez-monastic-056 | ITOCTBTEBNTEJOCTYSHOTAKOPOTKHSEMATMOEJEMVPVEMTBTMJTDOYSHESTKOPGNHKCXYKOHDTHSKYMTAEVTKOHDOMPSUYHNHOZBMERHATJEMOCTDEVVESATJTSKTBMEVEOTOCTQTSTMPNITNJPMT | ITOCTBTEBNTEJOCTYSHOTAKOPOTKHSEMATMOEJEMVPVEMTBTMJTDOYSHESTKOPGNHKCXYKOHDTHSKYMTAEVTKOHDOMPSUYHNHOZBMERHATJEMOCTDEVVESATJTSKTBMEVEOTOCTQTSTMPNITNJPMT | WE THE PEOPLE OF THE UNITED STATES IN ORDER TO FORM A MORE PERFECT UNION ESTABLISH JUSTICE INSURE DOMESTIC TRANQUILITY PROVIDE FOR THE COMMON DEFENSE PROMOTE THE GENERAL WELFARE | geez_monastic | geez_monastic | substitution | {
"type": "keyword",
"value": "GEEZ"
} | advanced | en | 149 | 149 | cipher_museum | 0.2 | public | null | null |
fialka-v2-0476 | PBMSJHWKLUVPJYMKYBHYSIOXEYYMVXENVLFHBBGHSVYHYDQAXQAHGOQCEBBZJHEQFFWFYZLQNZXGXU | PBMSJHWKLUVPJYMKYBHYSIOXEYYMVXENVLFHBBGHSVYHYDQAXQAHGOQCEBBZJHEQFFWFYZLQNZXGXU | LA LIBERTE GUIDANT LE PEUPLE VERS UN AVENIR MEILLEUR ET PLUS JUSTE POUR TOUS LES HOMMES LIBRES | fialka | fialka | machine | {
"type": "seed",
"value": "SPUTNIK"
} | expert | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
cda-0019050 | 12.18.2 15.14.15 18.32.5 12.49.6 20.10.7 6.43.7 2.49.2 11.44.14 9.3.12 10.33.13 12.31.13 18.17.13 19.45.13 4.28.8 15.9.9 12.19.9 20.9.14 13.46.9 6.45.1 12.44.7 2.41.14 5.44.15 9.48.2 18.11.15 1.21.4 19.20.7 4.21.12 12.20.6 2.49.6 12.19.4 7.2.7 2.11.2 14.13.9 15.1.11 10.3.3 6.17.9 13.25.10 13.30.8 19.7.15 2.40.13 16.16.... | 12.18.2 15.14.15 18.32.5 12.49.6 20.10.7 6.43.7 2.49.2 11.44.14 9.3.12 10.33.13 12.31.13 18.17.13 19.45.13 4.28.8 15.9.9 12.19.9 20.9.14 13.46.9 6.45.1 12.44.7 2.41.14 5.44.15 9.48.2 18.11.15 1.21.4 19.20.7 4.21.12 12.20.6 2.49.6 12.19.4 7.2.7 2.11.2 14.13.9 15.1.11 10.3.3 6.17.9 13.25.10 13.30.8 19.7.15 2.40.13 16.16.... | THE MESSAGE WAS HIDDEN BUT NOT SECURE A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY TOMORROW | book_cipher | book_cipher | null | {} | hard | en | 126 | 126 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Book cipher: coordinates (page.line.word) referencing a shared document. |
four-square-194 | DFRVNLNINLIBOHXV | DFRVNLNINLIBOHXV | FORWARD MARCH NOW | four_square | four_square | polygraphic | {
"key1": "ENIGMA",
"key2": "CRYPTO"
} | advanced | en | 16 | 16 | cipher_museum | 0.2 | public | null | null |
cda-0021057 | .. .. ... .... ... .... . .... . ..... . .... .... ..... . ... . . .... .... .. .... ... .... ... ... . . ... . .... .... ... .... ... .... ... . .... ... . ..... ..... ... ... ..... ... . . . .. .... ... ... .... .... .. ... . ..... .. .... .... .. ... . .. .... ... .. .. .... .... ... | .. .. ... .... ... .... . .... . ..... . .... .... ..... . ... . . .... .... .. .... ... .... ... ... . . ... . .... .... ... .... ... .... ... . .... ... . ..... ..... ... ... ..... ... . . . .. .... ... ... .... .... .. ... . ..... .. .... .... .. ... . .. .... ... .. .. .... .... ... | GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS | tap_code | tap_code | null | {} | medium | en | 38 | 38 | 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. |
playfair-v3-0806 | NMBDFZSMIEGEFPSZQDRADHRTPFFSLCBWBFRZTRSGOUTNCWDOEMMZZSICRQCTGRRTRCMSPITNAPRM | NMBDFZSMIEGEFPSZQDRADHRTPFFSLCBWBFRZTRSGOUTNCWDOEMMZZSICRQCTGRRTRCMSPITNAPRM | THE BATTLE OF GETTYSBURG LASTED THREE DAYS AND COST OVER FIFTY THOUSAND CASUALTIES TOTAL | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "COURAGE"
} | intermediate | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
chaocipher-v2-0050 | VAPQXSOEIALDIEXHOMIVVJLNAJRCMCPVRZBZQZORQGIZTBADRHMVSKVMEFDDUXHAXLCKTXODHS | VAPQXSOEIALDIEXHOMIVVJLNAJRCMCPVRZBZQZORQGIZTBADRHMVSKVMEFDDUXHAXLCKTXODHS | GOOD NIGHT GOOD NIGHT PARTING IS SUCH SWEET SORROW THAT I SHALL SAY GOOD NIGHT TILL MORROW | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "PALACE"
} | advanced | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
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