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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
chaocipher-v3-0276 | AWKEZXHHHOQNGGVCFBXWQVNMRQHUOGNCDMKYXYVJHCQVZHMGRLOJQVYZXGACBJOVQHFPUVTCKVX | AWKEZXHHHOQNGGVCFBXWQVNMRQHUOGNCDMKYXYVJHCQVZHMGRLOJQVYZXGACBJOVQHFPUVTCKVX | THE SPEED OF LIGHT IS THE ULTIMATE SPEED LIMIT IN THE UNIVERSE EINSTEIN DEMONSTRATED THIS | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
fialka-v2-0114 | EPMRYFXWKYGMZXNOZVEMTQRFIAQVMMVHTWIXVFSNKXEBRLHICJGOJQIOOJNGAFTFYBHZGJLXKWBZCMMBHMGLLOJBUQJRBMLFWWXJIRVRLFSYWVMLZZONYPGNPZHBOMIJBOPWBFWZBCBOHMYDEZIPNQKVGWFCIIGJ | EPMRYFXWKYGMZXNOZVEMTQRFIAQVMMVHTWIXVFSNKXEBRLHICJGOJQIOOJNGAFTFYBHZGJLXKWBZCMMBHMGLLOJBUQJRBMLFWWXJIRVRLFSYWVMLZZONYPGNPZHBOMIJBOPWBFWZBCBOHMYDEZIPNQKVGWFCIIGJ | THAT ON THE FIRST DAY OF JANUARY IN THE YEAR OF OUR LORD ONE THOUSAND EIGHT HUNDRED AND SIXTY THREE ALL PERSONS HELD AS SLAVES WITHIN ANY STATE IN REBELLION AGAINST THE UNITED STATES SHALL BE FREE | fialka | fialka | machine | {
"type": "seed",
"value": "MOSCOW"
} | expert | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
chaocipher-v2-0264 | SXDEUJGLFZCVOXIEBDZ | SXDEUJGLFZCVOXIEBDZ | MISSION ACCOMPLISHED | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
cda-0016109 | ... ..... .... ..... . .. ... . .. .... . ... .. .... ... ... .. . .... .. . . .... ... .... .... .... .. .... ..... . ... .... .... .... ..... .... .. . ..... . .... . ..... .... ... . ..... .... .. ..... . . ..... .... ... . ... . . .... .. . ..... .. . .... ..... ... . . .... . ..... | ... ..... .... ..... . .. ... . .. .... . ... .. .... ... ... .. . .... .. . . .... ... .... .... .... .. .... ..... . ... .... .... .... ..... .... .. . ..... . .... . ..... .... ... . ..... .... .. ..... . . ..... .... ... . ... . . .... .. . ..... .. . .... ..... ... . . .... . ..... | PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN | tap_code | tap_code | null | {} | medium | en | 41 | 41 | 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. |
beaufort-v2-0950 | BDIXIOPCXIWTODIXIHNLOCXTKMBZVKOXTSHRWILUEPCBJOPOAKKJPJOZVKXLAQOQOCLJASQAZJGA | BDIXIOPCXIWTODIXIHNLOCXTKMBZVKOXTSHRWILUEPCBJOPOAKKJPJOZVKXLAQOQOCLJASQAZJGA | BLESSED ARE THE PURE IN HEART FOR THEY SHALL SEE GOD AND BLESSED ARE THE PEACEMAKERS AMONG US | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "COMPASS"
} | intermediate | en | 76 | 76 | cipher_museum | 2.0 | public | null | null |
aeneas-tacticus-v3-0037 | 20 8 5 20 5 12 5 19 3 15 16 5 18 5 22 5 1 12 19 | 20 8 5 20 5 12 5 19 3 15 16 5 18 5 22 5 1 12 19 | THE TELESCOPE REVEALS | aeneas_tacticus | aeneas_tacticus | steganography | {
"type": "none",
"value": null
} | expert | en | 29 | 47 | cipher_museum | 2.0 | public | null | null |
cda-0012699 | K r· L K ┌· Γ· K r· L ┌ Γ· X· X r Γ· ┐· r· L ┌· ⌐ Γ K· ⌐ ─ r L X K r· L ⌐ └ ┐· r· ⌐ ¬ L K ¬ ⌒· ┘· ─ L ┐· ┘· X Γ· K Γ· ┘· ─ L ⌐ r r· └ L K K L ┌· K r· L K· Γ· ¬· L ─ L ┌· L r Γ· ┐· r· L ┌· X· X L X ⌐ ┌· L ┐· L ⌐ K Γ· ─ ¬· ┐ L ⌒· ⌒ ┘· ┌· Γ | K r· L K ┌· Γ· K r· L ┌ Γ· X· X r Γ· ┐· r· L ┌· ⌐ Γ K· ⌐ ─ r L X K r· L ⌐ └ ┐· r· ⌐ ¬ L K ¬ ⌒· ┘· ─ L ┐· ┘· X Γ· K Γ· ┘· ─ L ⌐ r r· └ L K K L ┌· K r· L K· Γ· ¬· L ─ L ┌· L r Γ· ┐· r· L ┌· X· X L X ⌐ ┌· L ┐· L ⌐ K Γ· ─ ¬· ┐ L ⌒· ⌒ ┘· ┌· Γ | THE TRITHEMIUS CIPHER ADVANCES THE ALPHABET BY ONE POSITION EACH LETTER THE VIGENERE CIPHER USES A REPEATING KEYWORD | pigpen | pigpen | null | {} | medium | en | 50 | 50 | synthetic_educational | null | null | [
"symbol_frequency",
"grid_position_decode"
] | Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids. |
kl7-v3-0223 | ALWNCMYANYHBJW | ALWNCMYANYHBJW | THE SIEGE BEGINS | kl7 | kl7 | machine | {
"type": "seed",
"value": "FREEDOM"
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
copiale-v3-0139 | I3 M4 D5 B6 S8 Q8 G3 P0 B4 B6 C7 S0 M9 | I3 M4 D5 B6 S8 Q8 G3 P0 B4 B6 C7 S0 M9 | THE APPLE FALLS | copiale | copiale | substitution | {
"type": "keyword",
"value": "TEMPLE"
} | advanced | en | 26 | 38 | cipher_museum | 2.0 | public | null | null |
playfair-386 | LHPVRFFBULUQPVFYGTCKLGPTUMPNTHKUONSLFEOPWHGPPTWLTGLZBPLGNKGP | LHPVRFFBULUQPVFYGTCKLGPTUMPNTHKUONSLFEOPWHGPPTWLTGLZBPLGNKGP | KNOWLEDGE IS POWER AND INFORMATION IS THE KEY TO VICTORY IN ANY CONFLICT | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "MUSEUM"
} | intermediate | en | 60 | 60 | cipher_museum | 0.2 | public | null | null |
chinese-telegraph-v3-0001 | 1421 0472 0285 0918 1255 0012 0156 0729 0285 0472 0012 1346 1346 1024 0918 0667 0285 0856 | 1421 0472 0285 0918 1255 0012 0156 0729 0285 0472 0012 1346 1346 1024 0918 0667 0285 0856 | THE ORACLE HAS SPOKEN | chinese_telegraph | chinese_telegraph | codebook | {
"type": "none",
"value": null
} | expert | en | 72 | 89 | cipher_museum | 2.0 | public | null | null |
four-square-v3-0269 | UKEBSUOPOBTGEGMEIMDLRVSUSKICQDEBIGIRLTTHAQHKIMQLHNTMHDBLGKSHQHBBUAQDEBODTFSUMCZSOUAQIZ | UKEBSUOPOBTGEGMEIMDLRVSUSKICQDEBIGIRLTTHAQHKIMQLHNTMHDBLGKSHQHBBUAQDEBODTFSUMCZSOUAQIZ | CONGRESS SHALL MAKE NO LAW RESPECTING AN ESTABLISHMENT OF RELIGION OR PROHIBITING THE FREE EXERCISE | four_square | four_square | polygraphic | {
"key1": "TRIUMPH",
"key2": "JUSTICE"
} | advanced | en | 86 | 86 | cipher_museum | 2.0 | public | null | null |
cda-0016178 | 818 842 844 810 999 812 811 862 808 802 859 825 844 840 802 834 999 859 842 844 833 854 999 813 871 847 834 801 824 841 999 858 822 812 825 853 999 834 826 838 825 859 855 999 842 805 854 813 853 863 801 803 833 814 999 812 864 826 809 814 841 806 812 999 807 843 838 814 855 999 803 814 816 844 852 813 999 807 843 840 ... | 818 842 844 810 999 812 811 862 808 802 859 825 844 840 802 834 999 859 842 844 833 854 999 813 871 847 834 801 824 841 999 858 822 812 825 853 999 834 826 838 825 859 855 999 842 805 854 813 853 863 801 803 833 814 999 812 864 826 809 814 841 806 812 999 807 843 838 814 855 999 803 814 816 844 852 813 999 807 843 840 ... | GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS OBSERVABLE EVIDENCE COMES BEFORE CONFIDENCE THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION THE ENIGMA MACHINE USED ROTORS TO CREATE A POLYALPHABETIC CIPHER | culper_ring | culper_ring | null | {} | hard | en | 186 | 186 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
four-square-v2-0084 | DPPUUEMTVLITNVTFUTZMNIGSTRHTBBCRSGCPETTQCCIMCUULSQEIOEAPBBRKKSCOGPLOFNLOBKFSGRLZSY | DPPUUEMTVLITNVTFUTZMNIGSTRHTBBCRSGCPETTQCCIMCUULSQEIOEAPBBRKKSCOGPLOFNLOBKFSGRLZSY | FREQUENCY ANALYSIS EXPLOITS THE FACT THAT CERTAIN LETTERS APPEAR FAR MORE OFTEN IN ENGLISH TEXT | four_square | four_square | polygraphic | {
"key1": "PALACE",
"key2": "BATTLE"
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v3-0255 | ET ES D TQUTC UKEVOQSDIIY DAHKLWIOGBOG TCDT D SEKBIO JDK EK MLSSOSSELK LN D NLQTUKO JUST RO EK WDKT LN D WENO | ET ES D TQUTC UKEVOQSDIIY DAHKLWIOGBOG TCDT D SEKBIO JDK EK MLSSOSSELK LN D NLQTUKO JUST RO EK WDKT LN D WENO | IT IS A TRUTH UNIVERSALLY ACKNOWLEDGED THAT A SINGLE MAN IN POSSESSION OF A FORTUNE MUST BE IN WANT OF A WIFE | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "DRAGON"
} | beginner | en | 88 | 109 | cipher_museum | 2.0 | public | null | null |
vigenere-v3-1138 | MCEWBUCJHYLHUCLNVGGKOOGWKOWAYKVKNFUFCHGRPHUHYLZBFUAVBIXOHFCWWSNQVHBQBFACSSMPZGCXPJRMFBOASOWSPHVKSARKOSAGYHZYMVJOYZLWCAAVHBQMVZVNZCNCNBUWFNMLUHBAVHBQWNPZYVVHFXSE | MCEWBUCJHYLHUCLNVGGKOOGWKOWAYKVKNFUFCHGRPHUHYLZBFUAVBIXOHFCWWSNQVHBQBFACSSMPZGCXPJRMFBOASOWSPHVKSARKOSAGYHZYMVJOYZLWCAAVHBQMVZVNZCNCNBUWFNMLUHBAVHBQWNPZYVVHFXSE | 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 | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "HONOR"
} | intermediate | en | 160 | 160 | cipher_museum | 2.0 | public | null | null |
cda-0020622 | lkaiin otol chedy chor okal otain ytaiin sheol otaiin ytaiin chol shor otaiin qokedy otedy chedal okal ytaiin shor ytedy dainy lkaiin qokeedy okal qokeedy oxed qotedy qokeedy chedy ykcheol lkaiin chedal okeedy chedal shal sharal shor shedy shor rcheol daral ykcheol qotedy chedy daiin okal qokeedy qokeedy okal shaiin qo... | lkaiin otol chedy chor okal otain ytaiin sheol otaiin ytaiin chol shor otaiin qokedy otedy chedal okal ytaiin shor ytedy dainy lkaiin qokeedy okal qokeedy oxed qotedy qokeedy chedy ykcheol lkaiin chedal okeedy chedal shal sharal shor shedy shor rcheol daral ykcheol qotedy chedy daiin okal qokeedy qokeedy okal shaiin qo... | A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION | voynich_render | voynich_render | null | {} | hard | en | 351 | 351 | synthetic_educational | null | null | [
"statistical_analysis",
"unsolved"
] | Voynich manuscript: undeciphered 15th-century script; pseudo-syllabic output. |
rail-fence-v3-0318 | THEGMARTIEFSDHLO | THEGMARTIEFSDHLO | THE GATES HOLD FIRM | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 10
} | intermediate | en | 16 | 16 | cipher_museum | 2.0 | public | null | null |
two-square-v2-0188 | EQBQBECPERDFREGGRIONLENTDKDBETMEZMKSTESREPGBNTOSPEAKDKYOLCNWICEHDOWMAV | EQBQBECPERDFREGGRIONLENTDKDBETMEZMKSTESREPGBNTOSPEAKDKYOLCNWICEHDOWMAV | IT IS BETTER TO REMAIN SILENT AND BE THOUGHT A FOOL THAN TO SPEAK AND REMOVE ALL DOUBT | two_square | two_square | polygraphic | {
"key1": "LIBERTY",
"key2": "FREEDOM"
} | advanced | en | 70 | 70 | cipher_museum | 2.0 | public | null | null |
red-type-a-v2-0363 | FVOACCITSARANIGCUPAQUKKOBVUDQOJYQQENSYCIACEFAGAFNOZOJQADOAXRTEYCVAFOYWOOFVOCCORUZOBEYSNIZUABZOHROOTUHAWYFZOCFYKOTFAEKESWECRXABYWHIARHOULCFOTEXVOWSIG | FVOACCITSARANIGCUPAQUKKOBVUDQOJYQQENSYCIACEFAGAFNOZOJQADOAXRTEYCVAFOYWOOFVOCCORUZOBEYSNIZUABZOHROOTUHAWYFZOCFYKOTFAEKESWECRXABYWHIARHOULCFOTEXVOWSIG | 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 | red_type_a | red_type_a | machine | {
"type": "keyword",
"value": "TOKYO"
} | advanced | en | 148 | 148 | cipher_museum | 2.0 | public | null | null |
affine-v2-0257 | PJUJQID JSUJWPVL | PJUJQID JSUJWPVL | CAVALRY ADVANCES | affine | affine | substitution | {
"a": 3,
"b": 9
} | beginner | en | 15 | 16 | cipher_museum | 2.0 | public | null | null |
vernam-v2-0188 | JDIBTQCAYXTWVYLPWNDQBRZBGQTOIHNCHKSHTGGJZLAWTMBVCFXQOHIEZRBWTPVAJJTLAONHMJZSXQO | JDIBTQCAYXTWVYLPWNDQBRZBGQTOIHNCHKSHTGGJZLAWTMBVCFXQOHIEZRBWTPVAJJTLAONHMJZSXQO | THE KASISKI TEST FINDS REPEATED SEQUENCES TO DETERMINE THE KEY LENGTH OF A VIGENERE CIPHER KEY | vernam | vernam | stream | {
"type": "pad",
"value": "QWERTY (repeating)"
} | expert | en | 79 | 79 | cipher_museum | 2.0 | public | null | null |
playfair-vf-0024 | YDHUFOYDIASPGSOUFKMYECKPIZPKSLPZPZCSUPFRVGYDCFCPULQUEPGKEPBYFHMUIDUTIDSPMGQUFPLGQVLZ | YDHUFOYDIASPGSOUFKMYECKPIZPKSLPZPZCSUPFRVGYDCFCPULQUEPGKEPBYFHMUIDUTIDSPMGQUFPLGQVLZ | THE TRUTH WILL OUT AND THE LIE WILL BE EXPOSED FOR THERE IS NOTHING HIDDEN THAT SHALL NOT BE KNOWN | playfair | playfair | polygraphic | {
"type": "keyword",
"value": "CIPHER"
} | intermediate | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
diana-206 | HGBIUVJISNSFZGW | HGBIUVJISNSFZGW | FORWARD MARCH NOW | diana | diana | polyalphabetic | {
"type": "keyword",
"value": "MUSEUM"
} | intermediate | en | 15 | 15 | cipher_museum | 0.2 | public | null | null |
copiale-v2-0022 | Q8 S3 C8 S3 O2 O8 A2 R7 B2 K0 U4 M2 G9 P5 C9 U6 | Q8 S3 C8 S3 O2 O8 A2 R7 B2 K0 U4 M2 G9 P5 C9 U6 | DIVIDE AND CONQUER | copiale | copiale | substitution | {
"type": "keyword",
"value": "MASONIC"
} | advanced | en | 32 | 47 | cipher_museum | 2.0 | public | null | null |
affine-v3-0776 | UCXX GM WINGCMX IYGM KMCZI CEY PMJMZ GWPD NYS XYPE HZMUWIMXK W RNYAENR W SYAXD ICWX CLYAR CPD IMM RNM YUMCP | UCXX GM WINGCMX IYGM KMCZI CEY PMJMZ GWPD NYS XYPE HZMUWIMXK W RNYAENR W SYAXD ICWX CLYAR CPD IMM RNM YUMCP | CALL ME ISHMAEL SOME YEARS AGO NEVER MIND HOW LONG PRECISELY I THOUGHT I WOULD SAIL ABOUT AND SEE THE OCEAN | affine | affine | substitution | {
"a": 9,
"b": 2
} | beginner | en | 87 | 107 | cipher_museum | 2.0 | public | null | null |
cda-0020833 | WOLL ACHE EDIB EHYA ZZIE WOLL ACHE ETSA HTHA NZIE NODA IHGA HTKI NTSA HAHJ AHSH USHG AHAK HAKL IZZI EDZE HDZE HTSA HTKI NAHJ AHNA ASTS OSIW OLLA CHEE GLOE IHTK INTH ANZI ELIN MOAS IGAH TKIN SHUS HDIB EHWO LLAC HEET SAHB ETHA NZIE LIND ZEHS HUSH AKHA NAAS TSOS ISHU SH | WOLL ACHE EDIB EHYA ZZIE WOLL ACHE ETSA HTHA NZIE NODA IHGA HTKI NTSA HAHJ AHSH USHG AHAK HAKL IZZI EDZE HDZE HTSA HTKI NAHJ AHNA ASTS OSIW OLLA CHEE GLOE IHTK INTH ANZI ELIN MOAS IGAH TKIN SHUS HDIB EHWO LLAC HEET SAHB ETHA NZIE LIND ZEHS HUSH AKHA NAAS TSOS ISHU SH | ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY | navajo_code | navajo_code | null | {} | hard | en | 214 | 214 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
cda-0017395 | WOL-LA-CHEE / DIBEH / THAN-ZIE / GAH / A-KHA / TSAH / AH-JAH / MOASI / DIBEH-YAZZIE / WOL-LA-CHEE / TKIN / NA-AS-TSO-SI / TSAH / DZEH / DZEH / BE / DIBEH / DIBEH / THAN-ZIE / GAH / A-KHA / TSAH / AH-JAH / DZEH / A-KEH-DI-GLI... | WOL-LA-CHEE / DIBEH / THAN-ZIE / GAH / A-KHA / TSAH / AH-JAH / MOASI / DIBEH-YAZZIE / WOL-LA-CHEE / TKIN / NA-AS-TSO-SI / TSAH / DZEH / DZEH / BE / DIBEH / DIBEH / THAN-ZIE / GAH / A-KHA / TSAH / AH-JAH / DZEH / A-KEH-DI-GLI... | A STRONG CLAIM NEEDS STRONG EVIDENCE | navajo_code | navajo_code | null | {} | hard | en | 160 | 160 | synthetic_educational | null | null | [
"codebook_frequency",
"word_list_attack"
] | Navajo Code Talker cipher: Navajo words represent English letters. |
columnar-transposition-v3-0116 | UDEUVLTS | UDEUVLTS | DEUS VULT | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "FORTRESS"
} | intermediate | en | 8 | 8 | cipher_museum | 2.0 | public | null | null |
two-square-v2-0081 | UGNUAZHOCANNMEUAOTITLUUGPUCQRLUAENKGLOOLFAMUPUEAQNRLSPBOEMUMECLURTMLCWCKEKGPLUZBFW | UGNUAZHOCANNMEUAOTITLUUGPUCQRLUAENKGLOOLFAMUPUEAQNRLSPBOEMUMECLURTMLCWCKEKGPLUZBFW | THOSE WHO CANNOT REMEMBER THE PAST ARE CONDEMNED TO REPEAT IT AS PHILOSOPHER SANTAYANA OBSERVED | two_square | two_square | polygraphic | {
"key1": "PALACE",
"key2": "BATTLE"
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
cda-0004350 | SBXR JPRD PXPH XHHQ UDGG VZIR NOJG RQXK AAVH RXAJ DHJU KAWP FDUO RNOV HPXP HJKY IKNV XLII PNNY YAPN ZWPE UEJT IYUZ QPDX NHYE OPJT JSAN ESZL XPAA MHUY HDGW YFHR WAWB EHVZ T | SBXR JPRD PXPH XHHQ UDGG VZIR NOJG RQXK AAVH RXAJ DHJU KAWP FDUO RNOV HPXP HJKY IKNV XLII PNNY YAPN ZWPE UEJT IYUZ QPDX NHYE OPJT JSAN ESZL XPAA MHUY HDGW YFHR WAWB EHVZ T | THE ARCHITECTURE SHOULD MAKE MISUSE HARDER ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY | beaufort | beaufort | null | {
"key": "LIBRARY"
} | hard | en | 137 | 137 | synthetic_educational | null | null | [
"kasiski_examination",
"friedman_test",
"index_of_coincidence"
] | Beaufort: E(x)=k-x mod 26 — reciprocal cipher (decryption identical to encryption). |
four-square-045 | DFQSRYHQEOKYTYZKKVEORNXRKIQSLKRBXSQYSGQCDPDFSNDPDARHMMDIIV | DFQSRYHQEOKYTYZKKVEORNXRKIQSLKRBXSQYSGQCDPDFSNDPDARHMMDIIV | FOUR SCORE AND SEVEN YEARS AGO OUR FATHERS BROUGHT FORTH THIS NATION | four_square | four_square | polygraphic | {
"key1": "EXAMPLE",
"key2": "KEYWORD"
} | advanced | en | 58 | 58 | cipher_museum | 0.2 | public | null | null |
slidex-v2-0132 | SSNAUHTOCBCKPR | SSNAUHTOCBCKPR | THE PASS IS HELD | slidex | slidex | transposition | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
kl7-034 | QXOLRBRKIVQHUDUMFPMHEUUKODFXPKMPTHFXZYN | QXOLRBRKIVQHUDUMFPMHEUUKODFXPKMPTHFXZYN | IT WAS THE BEST OF TIMES IT WAS THE WORST OF TIMES | kl7 | kl7 | machine | {
"type": "seed",
"value": "TSEC"
} | expert | en | 39 | 39 | cipher_museum | 0.2 | public | null | null |
arnold-andre-v3-0004 | 1.1.2 13.1.1 14.3.2 14.1.5 14.2.2 14.2.4 14.3.5 14.3.4 14.4.4 15.1.1 13.1.1 14.4.4 14.4.5 14.1.1 14.3.4 14.1.4 15.1.1 13.1.1 14.4.3 14.1.5 14.1.1 14.1.4 14.5.5 15.1.1 | 1.1.2 13.1.1 14.3.2 14.1.5 14.2.2 14.2.4 14.3.5 14.3.4 14.4.4 15.1.1 13.1.1 14.4.4 14.4.5 14.1.1 14.3.4 14.1.4 15.1.1 13.1.1 14.4.3 14.1.5 14.1.1 14.1.4 14.5.5 15.1.1 | THE LEGIONS STAND READY | arnold_andre | arnold_andre | codebook | {
"type": "none",
"value": null
} | expert | en | 143 | 166 | cipher_museum | 2.0 | public | null | null |
rail-fence-fr-007 | JPNEOCEUSEESDNJSI | JPNEOCEUSEESDNJSI | JE PENSE DONC JE SUIS | rail_fence | rail_fence | transposition | {
"type": "shift",
"value": 2
} | intermediate | fr | 17 | 17 | cipher_museum | 0.2 | public | null | null |
nihilist-v3-0150 | 63 29 55 26 76 87 47 76 57 55 28 68 56 50 55 29 55 35 37 83 80 74 27 29 37 46 54 77 72 38 55 39 66 54 76 45 36 36 55 37 83 49 74 29 29 38 39 83 56 74 29 29 59 68 54 50 54 36 26 56 66 63 68 73 50 37 59 39 67 47 76 57 55 55 67 63 49 56 | 63 29 55 26 76 87 47 76 57 55 28 68 56 50 55 29 55 35 37 83 80 74 27 29 37 46 54 77 72 38 55 39 66 54 76 45 36 36 55 37 83 49 74 29 29 38 39 83 56 74 29 29 59 68 54 50 54 36 26 56 66 63 68 73 50 37 59 39 67 47 76 57 55 55 67 63 49 56 | GENIUS IS ONE PERCENT INSPIRATION AND NINETY NINE PERCENT PERSPIRATION THOMAS EDISON NOTED | nihilist | nihilist | fractionation | {
"polybius": "LIBERTY",
"keyword": "FREEDOM"
} | advanced | en | 156 | 233 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v3-0236 | OEOHEDRYTTILEIFLEHNTUESTISW | OEOHEDRYTTILEIFLEHNTUESTISW | DONT FIRE TILL YOU SEE THE WHITES | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "BATTLE"
} | intermediate | en | 27 | 27 | cipher_museum | 2.0 | public | null | null |
cda-0014644 | ⟨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. |
great-cipher-096 | 171 163 147 159 118 117 173 177 163 172 161 174 102 143 104 138 111 114 171 163 147 134 159 142 107 121 172 117 118 145 115 142 141 163 127 137 101 163 104 127 181 161 | 171 163 147 159 118 117 173 177 163 172 161 174 102 143 104 138 111 114 171 163 147 134 159 142 107 121 172 117 118 145 115 142 141 163 127 137 101 163 104 127 181 161 | ALL THE WORLDS A STAGE AND ALL THE MEN AND WOMEN MERELY PLAYERS | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "CIPHER"
} | expert | en | 126 | 167 | cipher_museum | 0.2 | public | null | null |
four-square-079 | SFEGBLDCTSCAPY | SFEGBLDCTSCAPY | THE KING IS DEAD | four_square | four_square | polygraphic | {
"key1": "CIPHER",
"key2": "MUSEUM"
} | advanced | en | 14 | 14 | cipher_museum | 0.2 | public | null | null |
cda-0003921 | GUR BAR GVZR CNQ VF GURBERGVPNYYL HAOERNXNOYR VS HFRQ PBEERPGYL GUR IVTRARER PVCURE HFRF N ERCRNGVAT XRLJBEQ GUR NHGBXRL PVCURE RKGRAQF GUR XRL JVGU GUR CYNVAGRKG VGFRYS PYNFFVPNY PVCUREF GRNPU JUL ZBQREA FRPHEVGL ZNGGREF UBARFGYL | GUR BAR GVZR CNQ VF GURBERGVPNYYL HAOERNXNOYR VS HFRQ PBEERPGYL GUR IVTRARER PVCURE HFRF N ERCRNGVAT XRLJBEQ GUR NHGBXRL PVCURE RKGRAQF GUR XRL JVGU GUR CYNVAGRKG VGFRYS PYNFFVPNY PVCUREF GRNPU JUL ZBQREA FRPHEVGL ZNGGREF UBARFGYL | THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY THE VIGENERE CIPHER USES A REPEATING KEYWORD THE AUTOKEY CIPHER EXTENDS THE KEY WITH THE PLAINTEXT ITSELF CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS HONESTLY | rot13 | rot13 | null | {
"shift": 13
} | hard | en | 196 | 196 | synthetic_educational | null | null | [
"brute_force_26",
"self_inverse_check"
] | ROT-13 is Caesar with shift 13 — it is its own inverse. |
porta-v2-0470 | BMBANXIDOKMXPJIDQWEMMVFMXRVVBESEOBFMOIAAORJENVOVOLAWDMWQXYWLNTHVNJVXHVEEELOXVE | BMBANXIDOKMXPJIDQWEMMVFMXRVVBESEOBFMOIAAORJENVOVOLAWDMWQXYWLNTHVNJVXHVEEELOXVE | YOUR MISSION IF YOU CHOOSE TO ACCEPT IT IS TO EXTRACT THE AGENT FROM BEHIND ENEMY LINES TONIGHT | porta | porta | polyalphabetic | {
"type": "keyword",
"value": "VENICE"
} | intermediate | en | 78 | 78 | cipher_museum | 2.0 | public | null | null |
homophonic-v3-0028 | 97 45 28 83 29 22 21 72 10 99 91 10 83 32 19 72 64 50 71 41 | 97 45 28 83 29 22 21 72 10 99 91 10 83 32 19 72 64 50 71 41 | THE REDCOATS ARE COMING | homophonic | homophonic | substitution | {
"type": "keyword",
"value": "DRAGON"
} | intermediate | en | 40 | 59 | cipher_museum | 2.0 | public | null | null |
cda-0012782 | 60 17 33 67 66 61 66 64 35 93 63 94 22 3 35 45 4 67 93 15 48 11 1 63 26 39 41 67 93 14 43 50 36 14 2 3 48 86 49 60 94 25 58 2 70 50 63 76 11 49 68 66 76 15 87 2 22 43 82 58 43 17 93 46 25 23 52 60 88 23 2 39 63 88 1 67 48 25 67 92 68 88 34 23 48 63 72 11 59 60 49 76 15 43 67 22 1 14 61 76 34 91 66 50 25 17 22 3 33 87 5... | 60 17 33 67 66 61 66 64 35 93 63 94 22 3 35 45 4 67 93 15 48 11 1 63 26 39 41 67 93 14 43 50 36 14 2 3 48 86 49 60 94 25 58 2 70 50 63 76 11 49 68 66 76 15 87 2 22 43 82 58 43 17 93 46 25 23 52 60 88 23 2 39 63 88 1 67 48 25 67 92 68 88 34 23 48 63 72 11 59 60 49 76 15 43 67 22 1 14 61 76 34 91 66 50 25 17 22 3 33 87 5... | THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS | homophonic | homophonic | null | {} | hard | en | 184 | 184 | synthetic_educational | null | null | [
"frequency_analysis",
"multiple_ciphertext_attack"
] | Homophonic substitution: each letter maps to multiple possible numbers. |
sigaba-v2-0502 | CJBPGLERMZSYECJXLQHXKUQDLXBHJYXKPSYIJMPZZHFBXHKKWCKIRVZCZGHOKNRPXPIUTEDNHOVWXQJMGRFACOSFVIKUHYJBBYXJHUQDHBVPDEJEFKRBRQLMJNXVUFGZRKGWGGVYQGFMTRMTRCNUXQKGGUPNWKRMFHMP | CJBPGLERMZSYECJXLQHXKUQDLXBHJYXKPSYIJMPZZHFBXHKKWCKIRVZCZGHOKNRPXPIUTEDNHOVWXQJMGRFACOSFVIKUHYJBBYXJHUQDHBVPDEJEFKRBRQLMJNXVUFGZRKGWGGVYQGFMTRMTRCNUXQKGGUPNWKRMFHMP | ULTRA INTELLIGENCE DERIVED FROM DECRYPTED GERMAN ENIGMA TRAFFIC INDICATES THAT ENEMY PANZER DIVISIONS ARE CONCENTRATED AT CALAIS CONFIRMING THE DECEPTION OPERATION FORTITUDE HAS SUCCEEDED | sigaba | sigaba | machine | {
"type": "seed",
"value": "LIBERTY"
} | expert | en | 164 | 164 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v2-0113 | DEMTJEKEM KPY LRY OEPLE OEPLE AUT TFERE GS MN OEPLE TFE WPR GS PLTUPJJY AEDUM TFE MEXT DPJE TFPT SWEEOS BRNK TFE MNRTF WGJJ ARGMD TN NUR EPRS TFE LJPSF NB RESNUMCGMD PRKS NUR ARETFREM PRE PJREPCY GM TFE BGEJC | DEMTJEKEM KPY LRY OEPLE OEPLE AUT TFERE GS MN OEPLE TFE WPR GS PLTUPJJY AEDUM TFE MEXT DPJE TFPT SWEEOS BRNK TFE MNRTF WGJJ ARGMD TN NUR EPRS TFE LJPSF NB RESNUMCGMD PRKS NUR ARETFREM PRE PJREPCY GM TFE BGEJC | GENTLEMEN MAY CRY PEACE PEACE BUT THERE IS NO PEACE THE WAR IS ACTUALLY BEGUN THE NEXT GALE THAT SWEEPS FROM THE NORTH WILL BRING TO OUR EARS THE CLASH OF RESOUNDING ARMS OUR BRETHREN ARE ALREADY IN THE FIELD | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "PALACE"
} | beginner | en | 169 | 208 | cipher_museum | 2.0 | public | null | null |
cda-0015523 | ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w38⟩ ⟨w08⟩ ⟨w22⟩ ⟨w32⟩ ⟨w22⟩ ⟨w38⟩ ⟨w32⟩ ⟨w20⟩ ⟨a37⟩ ⟨w08⟩ ⟨w04⟩ ⟨w32⟩ ⟨a07⟩ ⟨w08⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨a23⟩ ⟨w32⟩ ⟨a07⟩ ⟨a17⟩ ⟨w22⟩ ⟨a19⟩ ⟨w20⟩ ⟨a13⟩ ⟨w20⟩ ⟨w08⟩ ⟨a25⟩ ⟨w20⟩ ⟨a17⟩ ⟨a25⟩ ⟨a19⟩ ⟨w32⟩ ⟨w26⟩ ⟨a19⟩ ⟨w08⟩ ⟨w04⟩ ⟨w22⟩ ⟨w32⟩ ⟨a07⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨a25⟩ ⟨w20⟩ ⟨a37⟩ ⟨a... | ⟨a25⟩ ⟨a29⟩ ⟨w20⟩ ⟨w38⟩ ⟨w08⟩ ⟨w22⟩ ⟨w32⟩ ⟨w22⟩ ⟨w38⟩ ⟨w32⟩ ⟨w20⟩ ⟨a37⟩ ⟨w08⟩ ⟨w04⟩ ⟨w32⟩ ⟨a07⟩ ⟨w08⟩ ⟨a25⟩ ⟨w32⟩ ⟨w10⟩ ⟨a07⟩ ⟨a23⟩ ⟨w32⟩ ⟨a07⟩ ⟨a17⟩ ⟨w22⟩ ⟨a19⟩ ⟨w20⟩ ⟨a13⟩ ⟨w20⟩ ⟨w08⟩ ⟨a25⟩ ⟨w20⟩ ⟨a17⟩ ⟨a25⟩ ⟨a19⟩ ⟨w32⟩ ⟨w26⟩ ⟨a19⟩ ⟨w08⟩ ⟨w04⟩ ⟨w22⟩ ⟨w32⟩ ⟨a07⟩ ⟨w14⟩ ⟨w32⟩ ⟨a13⟩ ⟨a29⟩ ⟨w20⟩ ⟨a19⟩ ⟨a25⟩ ⟨w20⟩ ⟨a37⟩ ⟨a... | THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS | babington | babington | null | {} | hard | en | 100 | 100 | synthetic_educational | null | null | [
"nomenclator_frequency",
"symbol_mapping"
] | Babington nomenclator: symbol tokens ⟨wNN⟩/⟨aNN⟩ used in the 1586 Babington Plot. |
adfgvx-v3-0250 | ADADAAFADVDGDGAGAVDV | ADADAAFADVDGDGAGAVDV | DOT DASH DOT | adfgvx | adfgvx | fractionation | {
"polybius": "TRIUMPH",
"columnar": "JUSTICE"
} | advanced | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
cda-0020405 | THEBI FIDCX PHERC OMBIN ESAPZ LYBIX SSQUA REWIT HTRAN SPOSZ TIONX | THEBI FIDCX PHERC OMBIN ESAPZ LYBIX SSQUA REWIT HTRAN SPOSZ TIONX | THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION | commercial_code | commercial_code | null | {} | medium | en | 55 | 55 | synthetic_educational | null | null | [
"codebook_frequency",
"five_letter_group_analysis"
] | Commercial code: five-letter groups from a codebook, often ending in X or Z. |
four-square-v3-0067 | PLRWFNKLUTQWCESGCPUMLEHLUTYIIVCUDROSFDITUSQAMPPOLETGMNIYAUVBTRUMLITMDCCONIGDCRDNLZ | PLRWFNKLUTQWCESGCPUMLEHLUTYIIVCUDROSFDITUSQAMPPOLETGMNIYAUVBTRUMLITMDCCONIGDCRDNLZ | DARWIN OBSERVED THAT SPECIES EVOLVE THROUGH NATURAL SELECTION OVER VAST SPANS OF GEOLOGIC TIME | four_square | four_square | polygraphic | {
"key1": "PALACE",
"key2": "BATTLE"
} | advanced | en | 82 | 82 | cipher_museum | 2.0 | public | null | null |
geheimschreiber-v3-0132 | ABSZJLKYMRCHYEITOOUUOWZIAWV | ABSZJLKYMRCHYEITOOUUOWZIAWV | DONT FIRE TILL YOU SEE THE WHITES | geheimschreiber | geheimschreiber | machine | {
"type": "seed",
"value": "KAISER"
} | expert | en | 27 | 27 | cipher_museum | 2.0 | public | null | null |
fractionated-morse-v2-0270 | TRQPWKFMBBHUQQB | TRQPWKFMBBHUQQB | AWAIT MY SIGNAL | fractionated_morse | fractionated_morse | fractionation | {
"type": "keyword",
"value": "LIBERTY"
} | advanced | en | 15 | 15 | cipher_museum | 2.0 | public | null | null |
rail-fence-v2-0556 | GVEUENIVRORNECIISCEKKRSSERASTNTTATBAOIOLSUEWMTGARROOHRHGGPREATTEEFSANHNE | GVEUENIVRORNECIISCEKKRSSERASTNTTATBAOIOLSUEWMTGARROOHRHGGPREATTEEFSANHNE | GENERAL GRANT HAS TAKEN VICKSBURG THE GREAT RIVER IS NOW OPEN FROM ITS SOURCE TO THE SEA | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 11
} | intermediate | en | 72 | 72 | cipher_museum | 2.0 | public | null | null |
chaocipher-113 | COEVEZZDEWVBLXDYZLWUNBKQCAGLZDNUCFEWMJXMZFCPLBRVFYDGBMBMDDZN | COEVEZZDEWVBLXDYZLWUNBKQCAGLZDNUCFEWMJXMZFCPLBRVFYDGBMBMDDZN | LET JUSTICE BE DONE THOUGH THE HEAVENS FALL AND THE STARS GO DARK FOREVER | chaocipher | chaocipher | machine | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 60 | 60 | cipher_museum | 0.2 | public | null | null |
adfgvx-113 | VFDDVDFDGGADGGDAFAXVFDGADAFAADFDDGGAFAFGDAAVGGVGVVGDFVAVAGVXAGADFGGGAGGFFAGGDFAADXDVFVVGVAGAADAXVXVGGGAAFADAAADFDADDDDAA | VFDDVDFDGGADGGDAFAXVFDGADAFAADFDDGGAFAFGDAAVGGVGVVGDFVAVAGVXAGADFGGGAGGFFAGGDFAADXDVFVVGVAGAADAXVXVGGGAAFADAAADFDADDDDAA | LET JUSTICE BE DONE THOUGH THE HEAVENS FALL AND THE STARS GO DARK FOREVER | adfgvx | adfgvx | fractionation | {
"polybius": "CIPHER",
"columnar": "MUSEUM"
} | advanced | en | 120 | 120 | cipher_museum | 0.2 | public | null | null |
enigma-v2-0955 | YIMTCQWNVFLCVSZEPVVCWQEDNKQNDEKMYKPCNGRESZHGLHGOREZVZNRJLEAVGKEKYHFVSWUJU | YIMTCQWNVFLCVSZEPVVCWQEDNKQNDEKMYKPCNGRESZHGLHGOREZVZNRJLEAVGKEKYHFVSWUJU | THE SECRET OF GETTING AHEAD IS GETTING STARTED ONE STEP AT A TIME GETS YOU VERY FAR INDEED | enigma | enigma | machine | {
"type": "rotor_start",
"value": "VWX"
} | expert | en | 73 | 73 | cipher_museum | 2.0 | public | null | null |
cda-0022104 | GSV RMWVC LU XLRMXRWVMXV RH Z FHVUFO XOFV | GSV RMWVC LU XLRMXRWVMXV RH Z FHVUFO XOFV | THE INDEX OF COINCIDENCE IS A USEFUL CLUE | atbash | atbash | null | {} | medium | en | 34 | 34 | synthetic_educational | null | null | [
"self_inverse_check",
"frequency_analysis"
] | Atbash maps A↔Z, B↔Y, … and is its own inverse. |
four-square-v3-0044 | SGAUCCKVCVAPTDZBSX | SGAUCCKVCVAPTDZBSX | THE RAILWAY ARRIVES | four_square | four_square | polygraphic | {
"key1": "PALACE",
"key2": "BATTLE"
} | advanced | en | 18 | 18 | cipher_museum | 2.0 | public | null | null |
monoalphabetic-v2-0298 | WCDT ES EK D KDJO TCDT WCEAC WO ADII D QLSO RY DKY LTCOQ KDJO WLUIG SJOII DS SWOOT | WCDT ES EK D KDJO TCDT WCEAC WO ADII D QLSO RY DKY LTCOQ KDJO WLUIG SJOII DS SWOOT | WHAT IS IN A NAME THAT WHICH WE CALL A ROSE BY ANY OTHER NAME WOULD SMELL AS SWEET | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "DRAGON"
} | beginner | en | 64 | 82 | cipher_museum | 2.0 | public | null | null |
bifid-214 | TPVAVAGBYNYRQTRDHIBIHECVYDPNPSQVESISUNRDLXAXDUPKU | TPVAVAGBYNYRQTRDHIBIHECVYDPNPSQVESISUNRDLXAXDUPKU | VENI VIDI VICI I CAME I SAW I CONQUERED ALL IN A SINGLE BATTLE | bifid | bifid | fractionation | {
"type": "keyword",
"value": "KEYWORD"
} | advanced | en | 49 | 49 | cipher_museum | 0.2 | public | null | null |
cda-0016892 | 858 822 814 999 832 800 854 826 856 831 826 999 813 869 801 836 826 840 802 859 825 842 839 999 816 824 839 809 855 999 852 814 845 812 802 858 814 809 999 858 852 824 820 853 800 837 855 999 826 839 999 808 824 846 823 814 853 857 813 869 857 999 | 858 822 814 999 832 800 854 826 856 831 826 999 813 869 801 836 826 840 802 859 825 842 839 999 816 824 839 809 855 999 852 814 845 812 802 858 814 809 999 858 852 824 820 853 800 837 855 999 826 839 999 808 824 846 823 814 853 857 813 869 857 999 | THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT | culper_ring | culper_ring | null | {} | medium | en | 54 | 54 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
enigma-v3-0183 | KRJKPFZJFXFMXSPDZMVHILZQYOFDRNPRHQUMFUUTIVAHNNJQIXNQLVRYJPPGVEBVOFUKHSRNLTVQXRGVJCVE | KRJKPFZJFXFMXSPDZMVHILZQYOFDRNPRHQUMFUUTIVAHNNJQIXNQLVRYJPPGVEBVOFUKHSRNLTVQXRGVJCVE | SIGNALS INTELLIGENCE OR SIGINT INVOLVES INTERCEPTION AND ANALYSIS OF ELECTRONIC COMMUNICATIONS | enigma | enigma | machine | {
"type": "rotor_start",
"value": "DEF"
} | expert | en | 84 | 84 | cipher_museum | 2.0 | public | null | null |
columnar-transposition-v3-0799 | NALTHOTHTISPLUERHESROEANTFATEESNAPAISCOPIPWTEDEMTDATTTHFIDEHSNHHEWLNTAELLNA | NALTHOTHTISPLUERHESROEANTFATEESNAPAISCOPIPWTEDEMTDATTTHFIDEHSNHHEWLNTAELLNA | NEWTON SAW THE APPLE FALL AND INTUITED THE SAME FORCE THAT HOLDS THE PLANETS IN THEIR PATHS | columnar_transposition | columnar_transposition | transposition | {
"type": "keyword",
"value": "JUSTICE"
} | intermediate | en | 75 | 75 | cipher_museum | 2.0 | public | null | null |
cda-0018043 | UFTCEUUFIFVWPEWPHDXCCWNYIHNIGAXGUFJWKAHJTDWRHFOSMNXQZDXBRPGMTRPOWLSTSYWTSNZWLTGLYVZJUQQHIFVGPILXUSFSEMBTZVTUSPMVAMQGGINLTFTWHJPYEAGBTEBVOSQGEW | UFTCEUUFIFVWPEWPHDXCCWNYIHNIGAXGUFJWKAHJTDWRHFOSMNXQZDXBRPGMTRPOWLSTSYWTSNZWLTGLYVZJUQQHIFVGPILXUSFSEMBTZVTUSPMVAMQGGINLTFTWHJPYEAGBTEBVOSQGEW | POLYBIUS ENCODED LETTERS AS PAIRS OF NUMBERS FROM ONE TO FIVE INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS | running_key | running_key | null | {} | hard | en | 142 | 142 | synthetic_educational | null | null | [
"index_of_coincidence",
"probable_plaintext"
] | Running-key cipher: Vigenère with a very long key (e.g. a book passage). |
one-time-pad-v2-0174 | YPMJUCNBSGTGUJSHRXDHIGIUNZTXIKAMOOVIAXRTRAQKYSLUKFNWQJHIXKIDSPLDGTAIC | YPMJUCNBSGTGUJSHRXDHIGIUNZTXIKAMOOVIAXRTRAQKYSLUKFNWQJHIXKIDSPLDGTAIC | IT IS BETTER TO REMAIN SILENT AND BE THOUGHT A FOOL THAN TO SPEAK AND REMOVE ALL DOUBT | one_time_pad | one_time_pad | stream | {
"type": "pad",
"value": "QWERTY (repeating)"
} | expert | en | 69 | 69 | cipher_museum | 2.0 | public | null | null |
alberti-disk-v3-0382 | IFPJLSNAAKNXRIKPDWJNQWRYXKIVFMPMLJTLDUQDOLEWAYGWANSYOIICBBMSJDTIZEQJKEXQLS | IFPJLSNAAKNXRIKPDWJNQWRYXKIVFMPMLJTLDUQDOLEWAYGWANSYOIICBBMSJDTIZEQJKEXQLS | GALILEO POINTED HIS TELESCOPE AT THE HEAVENS AND CONFIRMED THAT THE EARTH ORBITS THE SUN | alberti_disk | alberti_disk | disk | {
"type": "integer",
"value": 10
} | expert | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
fialka-v3-0107 | YNFXKRYFMMSEGXEFAQCRPSB | YNFXKRYFMMSEGXEFAQCRPSB | ROME WAS NOT BUILT IN ONE DAY | fialka | fialka | machine | {
"type": "seed",
"value": "KREMLIN"
} | expert | en | 23 | 23 | cipher_museum | 2.0 | public | null | null |
kama-sutra-v3-0287 | FZRYWMF ZYETMMZRTYUT KG FZRZYE ZYBKMBTF ZYETGUTJEZKY WYX WYWMNFZF KS TMTUEGKYZU UKLLCYZUWEZKYF | FZRYWMF ZYETMMZRTYUT KG FZRZYE ZYBKMBTF ZYETGUTJEZKY WYX WYWMNFZF KS TMTUEGKYZU UKLLCYZUWEZKYF | SIGNALS INTELLIGENCE OR SIGINT INVOLVES INTERCEPTION AND ANALYSIS OF ELECTRONIC COMMUNICATIONS | kama_sutra | kama_sutra | substitution | {
"type": "keyword",
"value": "INDIA"
} | intermediate | en | 84 | 94 | cipher_museum | 2.0 | public | null | null |
cda-0004302 | C ASIQUWBZHPA UWRN ZIWXNK TPRY PUA UGHTWQKUH BKG POLHZ VG KRKUDQGGUDM LU H VAHHBM KOWL CMDWMPZW KZ UPH TLDQSTVDIO QM WQJGUFZH CUE LHEYZXWU PUAHNM NWGGYO MQEYZXWKVO QV PVU JUQRFV EA SFBWGY GZHSBFVFA | C ASIQUWBZHPA UWRN ZIWXNK TPRY PUA UGHTWQKUH BKG POLHZ VG KRKUDQGGUDM LU H VAHHBM KOWL CMDWMPZW KZ UPH TLDQSTVDIO QM WQJGUFZH CUE LHEYZXWU PUAHNM NWGGYO MQEYZXWKVO QV PVU JUQRFV EA SFBWGY GZHSBFVFA | A TRANSPARENT TOOL SHOULD SHOW ITS REASONING THE INDEX OF COINCIDENCE IS A USEFUL CLUE BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF MODERN ENCRYPTION IS NOT BROKEN BY LETTER FREQUENCY | gronsfeld | gronsfeld | null | {
"key": "27183"
} | hard | en | 166 | 166 | synthetic_educational | null | null | [
"kasiski_examination",
"digit_key_brute_force"
] | Gronsfeld: Vigenère variant with a digit-only key (0–9 per position). |
rail-fence-v2-0460 | TMEHAHEBDMPINOOMENNSLABSEROEAOYSERTCDTSAEWTHETIOTRHOEROTPNVONPARAHAECNATEEESDASPR | TMEHAHEBDMPINOOMENNSLABSEROEAOYSERTCDTSAEWTHETIOTRHOEROTPNVONPARAHAECNATEEESDASPR | THOSE WHO CANNOT REMEMBER THE PAST ARE CONDEMNED TO REPEAT IT AS PHILOSOPHER SANTAYANA OBSERVED | rail_fence | rail_fence | transposition | {
"type": "integer",
"value": 10
} | intermediate | en | 81 | 81 | cipher_museum | 2.0 | public | null | null |
great-cipher-v3-0007 | 156 138 113 179 159 155 179 138 175 | 156 138 113 179 159 155 179 138 175 | MARCH TO VICTORY | great_cipher | great_cipher | nomenclator | {
"type": "seed",
"value": "VERSAILLES"
} | expert | en | 27 | 35 | cipher_museum | 2.0 | public | null | null |
adfgx-v2-0651 | GDDGFDGDAAGAGFFFFDAFFADAFFGXAGFGGDFFAFAXXFAXXFXGGGXXAADADAAFFFXDAAXDGFGGAFDAADXADAFDXXXXGGGAXXGDGXXXGGAXDXXAGXAXADGDADGADAAFXADFFAGFGAFAFFDAFDGAAGFXAGAGDF | GDDGFDGDAAGAGFFFFDAFFADAFFGXAGFGGDFFAFAXXFAXXFXGGGXXAADADAAFFFXDAAXDGFGGAFDAADXADAFDXXXXGGGAXXGDGXXXGGAXDXXAGXAXADGDADGADAAFXADFFAGFGAFAFFDAFDGAAGFXAGAGDF | THE FEAR OF THE LORD IS THE BEGINNING OF WISDOM AND KNOWLEDGE OF THE HOLY ONE IS UNDERSTANDING | adfgx | adfgx | fractionation | {
"polybius": "KAISER",
"columnar": "BERLIN"
} | advanced | en | 154 | 154 | cipher_museum | 2.0 | public | null | null |
noisy-monoalphabetic-telegraph-010 | RDA OTFSH UPLWK B X GTJNQ LVAP RDA IMZY ELC | RDA OTFSH UPLWK B X GTJNQ LVAP RDA IMZY ELC | THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG | monoalphabetic | monoalphabetic | substitution | {
"type": "keyword",
"value": "MUSEUM"
} | beginner | en | 34 | 43 | cipher_museum | 0.2 | public | null | null |
kl7-212 | IZTPLRPNZGHETRPIMPNYMRVQBPYJNZXDCHQARMOJOFNCX | IZTPLRPNZGHETRPIMPNYMRVQBPYJNZXDCHQARMOJOFNCX | NEVER INTERRUPT YOUR ENEMY WHEN HE IS MAKING A MISTAKE | kl7 | kl7 | machine | {
"type": "seed",
"value": "MUSEUM"
} | expert | en | 45 | 45 | cipher_museum | 0.2 | public | null | null |
vigenere-v2-0162 | QWSXIXQGWRVTKL | QWSXIXQGWRVTKL | LIBERTY OR DEATH | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "FORTRESS"
} | intermediate | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0016761 | WVGQO XEUZV YPTSK JMOJK MYKBS CCYQP WEXWR VRUVS DPKHT JYOOV NOYDN BEEWK LAZTE SRXNI ICUHK VJCTT CHKOU REPFT WRJWE ZCILI VQQWN WGSCK SZXOE FRDVY YYCVH SUJQH FYAQZ TZXOX QHSQK BTMJZ QFQIP XIMPO IMLZG KEBUX KNHER HSADE B | WVGQO XEUZV YPTSK JMOJK MYKBS CCYQP WEXWR VRUVS DPKHT JYOOV NOYDN BEEWK LAZTE SRXNI ICUHK VJCTT CHKOU REPFT WRJWE ZCILI VQQWN WGSCK SZXOE FRDVY YYCVH SUJQH FYAQZ TZXOX QHSQK BTMJZ QFQIP XIMPO IMLZG KEBUX KNHER HSADE B | COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION BRUTE FORCE WORKS ONLY WHEN THE KEY SPACE IS SMALL ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS | vernam | vernam | null | {} | hard | en | 181 | 181 | synthetic_educational | null | null | [
"key_reuse_attack",
"information_theoretic_proof"
] | Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP. |
slidex-109 | JJVTWPJRTTBBZCMTSYDXPRKHLKSYOVRIZCPRPYMHJRGRULHWKRMEHWPS | JJVTWPJRTTBBZCMTSYDXPRKHLKSYOVRIZCPRPYMHJRGRULHWKRMEHWPS | TO BE OR NOT TO BE THAT IS THE QUESTION WHETHER TIS NOBLER IN THE MIND | slidex | slidex | transposition | {
"type": "keyword",
"value": "CIPHER"
} | advanced | en | 56 | 56 | cipher_museum | 0.2 | public | null | null |
cda-0022128 | ZOZM GFIR MTYI LPVV MRTN ZDRG SXIR YHZM WGSV YLNY VNZX SRMV GSVK OZBU ZRIX RKSV IVMX IBKG HKZR IHLU OVGG VIHH RNFO GZMV LFHO BHVX FIRG BXOZ RNHH SLFO WYVG VHGV WFMW VIHX IFGR MB | ZOZM GFIR MTYI LPVV MRTN ZDRG SXIR YHZM WGSV YLNY VNZX SRMV GSVK OZBU ZRIX RKSV IVMX IBKG HKZR IHLU OVGG VIHH RNFO GZMV LFHO BHVX FIRG BXOZ RNHH SLFO WYVG VHGV WFMW VIHX IFGR MB | ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY | atbash | atbash | null | {} | hard | en | 142 | 142 | synthetic_educational | null | null | [
"self_inverse_check",
"frequency_analysis"
] | Atbash maps A↔Z, B↔Y, … and is its own inverse. |
adfgx-v2-0459 | DGFFDGDXDDGFDDDFDXDFFAXAAAADDAAGGFFDGDAXAAAFADDGAFXAGGFGGGADGFFFDDGGGADGXDDFDAXAGFADXDDGDAFFFDGFGFGXGDGDGDAAGAFGGAGDGGGDXGAFGFGADDFDFAGGDGGDDXGFAGDADADFGAFXDAAFAGGAXFFFGDFXXGDXDFDFAXFFADFAAGFADGXADAADGAFDGXDGGDADGDFDFFGGDAGGFFGAGDAFXDDAGAADGAGDFXFDGGDDGGDGGFGGAAGGGDXDGFDGXAAAXGAAXAGDDAAGXADGDGGFADFGAFFFAXXGFGAGGGAGAAFD... | DGFFDGDXDDGFDDDFDXDFFAXAAAADDAAGGFFDGDAXAAAFADDGAFXAGGFGGGADGFFFDDGGGADGXDDFDAXAGFADXDDGDAFFFDGFGFGXGDGDGDAAGAFGGAGDGGGDXGAFGFGADDFDFAGGDGGDDXGFAGDADADFGAFXDAAFAGGAXFFFGDFXXGDXDFDFAXFFADFAAGFADGXADAADGAFDGXDGGDADGDFDFFGGDAGGFFGAGDAFXDDAGAADGAGDFXFDGGDDGGDGGFGGAAGGGDXDGFDGXAAAXGAAXAGDDAAGXADGDGGFADFGAFFFAXXGFGAGGGAGAAFD... | GENTLEMEN MAY CRY PEACE PEACE BUT THERE IS NO PEACE THE WAR IS ACTUALLY BEGUN THE NEXT GALE THAT SWEEPS FROM THE NORTH WILL BRING TO OUR EARS THE CLASH OF RESOUNDING ARMS OUR BRETHREN ARE ALREADY IN THE FIELD | adfgx | adfgx | fractionation | {
"polybius": "DRAGON",
"columnar": "THUNDER"
} | advanced | en | 338 | 338 | cipher_museum | 2.0 | public | null | null |
gronsfeld-vi-0025 | DLXIVEOGCNUABVFHPSUKPAIMHCPUPCEAMQMGTFVDGZUZQPNMMVCSMBJCAZWWFVCMFQUFQPNVWM | DLXIVEOGCNUABVFHPSUKPAIMHCPUPCEAMQMGTFVDGZUZQPNMMVCSMBJCAZWWFVCMFQUFQPNVWM | BE WATCHFUL STAND FIRM IN THE FAITH ACT LIKE MEN BE STRONG LET ALL THAT YOU DO BE DONE IN LOVE | gronsfeld | gronsfeld | polyalphabetic | {
"type": "numeric",
"value": "27182"
} | intermediate | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
confederate-vigenere-v3-0382 | YTZVPAOAZAGHRHDIDEWESFGKPPLLMVRLAAGPFLOAHYOYQAKARHPHLELASRENTSZJUWGWPHPDMG | YTZVPAOAZAGHRHDIDEWESFGKPPLLMVRLAAGPFLOAHYOYQAKARHPHLELASRENTSZJUWGWPHPDMG | GALILEO POINTED HIS TELESCOPE AT THE HEAVENS AND CONFIRMED THAT THE EARTH ORBITS THE SUN | confederate_vigenere | confederate_vigenere | polyalphabetic | {
"type": "keyword",
"value": "STONEWALL"
} | intermediate | en | 74 | 74 | cipher_museum | 2.0 | public | null | null |
cda-0012771 | 66 36 82 65 57 68 43 76 68 50 80 52 50 65 36 82 80 82 29 52 80 43 65 66 61 65 68 50 80 61 69 76 57 82 66 66 82 80 61 61 50 77 59 57 66 68 29 82 69 59 61 57 43 82 80 80 69 80 52 69 80 80 82 52 66 50 69 29 68 29 11 11 82 66 82 52 66 50 69 29 68 80 82 76 59 29 11 68 77 82 29 66 68 57 66 69 61 82 52 59 80 82 61 43 61 66 82... | 66 36 82 65 57 68 43 76 68 50 80 52 50 65 36 82 80 82 29 52 80 43 65 66 61 65 68 50 80 61 69 76 57 82 66 66 82 80 61 61 50 77 59 57 66 68 29 82 69 59 61 57 43 82 80 80 69 80 52 69 80 80 82 52 66 50 69 29 68 29 11 11 82 66 82 52 66 50 69 29 68 80 82 76 59 29 11 68 77 82 29 66 68 57 66 69 61 82 52 59 80 82 61 43 61 66 82... | THE PLAYFAIR CIPHER ENCRYPTS PAIRS OF LETTERS SIMULTANEOUSLY ERROR CORRECTION AND DETECTION ARE FUNDAMENTAL TO SECURE SYSTEMS CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING | wallis_cipher | wallis_cipher | null | {} | hard | en | 154 | 154 | synthetic_educational | null | null | [
"number_substitution_decode",
"frequency_analysis"
] | Wallis cipher: each letter mapped to a unique two-digit number from a fixed table. |
enigma-v2-0508 | BRGDVCLGQYHPJE | BRGDVCLGQYHPJE | STORM THE BREACH | enigma | enigma | machine | {
"type": "rotor_start",
"value": "MNO"
} | expert | en | 14 | 14 | cipher_museum | 2.0 | public | null | null |
cda-0012134 | 855 814 808 860 851 824 857 874 999 806 834 800 825 836 856 999 856 822 842 860 834 810 999 805 814 999 859 812 854 857 814 811 999 862 839 809 813 852 999 854 808 851 861 858 826 841 872 999 857 842 837 842 851 852 843 866 999 | 855 814 808 860 851 824 857 874 999 806 834 800 825 836 856 999 856 822 842 860 834 810 999 805 814 999 859 812 854 857 814 811 999 862 839 809 813 852 999 854 808 851 861 858 826 841 872 999 857 842 837 842 851 852 843 866 999 | SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY TOMORROW | culper_ring | culper_ring | null | {} | medium | en | 49 | 49 | synthetic_educational | null | null | [
"codebook_frequency",
"number_range_analysis"
] | Culper Ring code: Washington's three-digit codebook numbers (800–999 range). |
cda-0008984 | FLASN ADTAA RYRYL SCCIE SIIXE SWUIH FRUNB XQIEB PLFER TUXUS ASHEE NEYTX ECKTE TRTSI IXNAC IRTER UNOXC NITSE NONAN XYRPU MRTPC DTXAE HTATL YEIOX NVEIP OEMRS DXAER OEATE TTAX | FLASN ADTAA RYRYL SCCIE SIIXE SWUIH FRUNB XQIEB PLFER TUXUS ASHEE NEYTX ECKTE TRTSI IXNAC IRTER UNOXC NITSE NONAN XYRPU MRTPC DTXAE HTATL YEIOX NVEIP OEMRS DXAER OEATE TTAX | FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION TODAY | scytale | scytale | null | {
"cols": 12
} | hard | en | 144 | 144 | synthetic_educational | null | null | [] | |
slidex-v3-0103 | DLIPZFCPQIAXQUACTSRMEYRPJKWPQSQARRINCGNDJHAUEDQULXAMCMCTDORPJKRRUFZUVBXOGXSYANXHUFAMAXVHRPEDHJEOLSVPANIUVUVPMHESSCOWOQSYYHRAZDJKZPXBANZPSCYSVCAKQJWREDPQYPARXKZALNDGEDLGVPUFJQRMASPCLN | DLIPZFCPQIAXQUACTSRMEYRPJKWPQSQARRINCGNDJHAUEDQULXAMCMCTDORPJKRRUFZUVBXOGXSYANXHUFAMAXVHRPEDHJEOLSVPANIUVUVPMHESSCOWOQSYYHRAZDJKZPXBANZPSCYSVCAKQJWREDPQYPARXKZALNDGEDLGVPUFJQRMASPCLN | WILLIAM FRIEDMAN WHO BROKE THE JAPANESE PURPLE CIPHER MACHINE BEFORE THE SECOND WORLD WAR ALSO COINED THE TERM CRYPTANALYSIS AND SPENT HIS CAREER AT THE SIGNALS INTELLIGENCE SERVICE BUILDING AMERICAN CODEBREAKING | slidex | slidex | transposition | {
"type": "keyword",
"value": "BLETCHLEY"
} | advanced | en | 182 | 182 | cipher_museum | 2.0 | public | null | null |
cda-0019729 | 20 8 5 2 9 6 9 4 3 9 16 8 5 18 3 15 13 2 9 14 5 19 1 16 15 12 25 2 9 21 19 19 17 21 1 18 5 23 9 20 8 20 18 1 14 19 16 15 19 9 20 9 15 14 1 20 2 1 19 8 5 14 3 15 4 5 19 2 25 18 5 22 5 18 19 9 14 7 20 8 5 1 12 16 8 1 2 5 20 1 19 3 25 20 1 12 5 9 19 1 18 15 4 21 19 5 4 2 25 19 16 1 18 20 1 14 19 20 15 5 14 3 18 25 16 20 1... | 20 8 5 2 9 6 9 4 3 9 16 8 5 18 3 15 13 2 9 14 5 19 1 16 15 12 25 2 9 21 19 19 17 21 1 18 5 23 9 20 8 20 18 1 14 19 16 15 19 9 20 9 15 14 1 20 2 1 19 8 5 14 3 15 4 5 19 2 25 18 5 22 5 18 19 9 14 7 20 8 5 1 12 16 8 1 2 5 20 1 19 3 25 20 1 12 5 9 19 1 18 15 4 21 19 5 4 2 25 19 16 1 18 20 1 14 19 20 15 5 14 3 18 25 16 20 1... | THE BIFID CIPHER COMBINES A POLYBIUS SQUARE WITH TRANSPOSITION ATBASH ENCODES BY REVERSING THE ALPHABET A SCYTALE IS A ROD USED BY SPARTANS TO ENCRYPT MESSAGES CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING | aeneas_tacticus | aeneas_tacticus | null | {} | hard | en | 179 | 179 | synthetic_educational | null | null | [
"sequential_number_decode",
"frequency_analysis"
] | Aeneas Tacticus: Greek sequential-number cipher; A=1…Z=26. |
polybius-v3-0069 | 33 15 52 44 34 33 43 11 52 44 23 15 11 35 35 31 15 21 11 31 31 11 33 14 24 33 44 45 24 44 15 14 44 23 15 43 11 32 15 21 34 42 13 15 44 23 11 44 23 34 31 14 43 44 23 15 35 31 11 33 15 44 43 24 33 44 23 15 24 42 35 11 44 23 43 | 33 15 52 44 34 33 43 11 52 44 23 15 11 35 35 31 15 21 11 31 31 11 33 14 24 33 44 45 24 44 15 14 44 23 15 43 11 32 15 21 34 42 13 15 44 23 11 44 23 34 31 14 43 44 23 15 35 31 11 33 15 44 43 24 33 44 23 15 24 42 35 11 44 23 43 | NEWTON SAW THE APPLE FALL AND INTUITED THE SAME FORCE THAT HOLDS THE PLANETS IN THEIR PATHS | polybius | polybius | substitution | {
"type": "none",
"value": null
} | beginner | en | 150 | 224 | cipher_museum | 2.0 | public | null | null |
cda-0007779 | WSRVJ XKMIN RRYZI LRBGL GXSWO CVGNI EBXPU NKXWV IETLS XRRPZ PTIEA LIOFP FAHIZ OKOCQ TWKYS WAHFZ RGSAB LRRCM BFPLU SVHJP SLBJP CSUNX ZGUBH TTLQB RWCGB HIJKF BVCZX RGJPQ WUFWV VLUVP XPBNI QBQBE IECLB FV | WSRVJ XKMIN RRYZI LRBGL GXSWO CVGNI EBXPU NKXWV IETLS XRRPZ PTIEA LIOFP FAHIZ OKOCQ TWKYS WAHFZ RGSAB LRRCM BFPLU SVHJP SLBJP CSUNX ZGUBH TTLQB RWCGB HIJKF BVCZX RGJPQ WUFWV VLUVP XPBNI QBQBE IECLB FV | PEER REVIEW AND REPRODUCIBILITY MATTER IN RESEARCH A TRANSPARENT TOOL SHOULD SHOW ITS REASONING A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION | autokey | autokey | null | {
"primer": "HONEST"
} | hard | en | 167 | 167 | synthetic_educational | null | null | [] | |
caesar-v2-1602 | GULS KOYYH IZ MWINM QUM VYBYUXYX UZNYL BYL WCJBYL FYNNYLM QYLY XYWIXYX VS NBIGUM JBYFCJJYM | GULS KOYYH IZ MWINM QUM VYBYUXYX UZNYL BYL WCJBYL FYNNYLM QYLY XYWIXYX VS NBIGUM JBYFCJJYM | MARY QUEEN OF SCOTS WAS BEHEADED AFTER HER CIPHER LETTERS WERE DECODED BY THOMAS PHELIPPES | caesar | caesar | substitution | {
"type": "shift",
"value": 20
} | beginner | en | 76 | 90 | cipher_museum | 2.0 | public | null | null |
cda-0010079 | GUR QRGRPGVIR FGHQVRF CNGGREAF ORSBER ZNXVAT PYNVZF GUR VAQRK BS PBVAPVQRAPR VF N HFRSHY PYHR | GUR QRGRPGVIR FGHQVRF CNGGREAF ORSBER ZNXVAT PYNVZF GUR VAQRK BS PBVAPVQRAPR VF N HFRSHY PYHR | THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS THE INDEX OF COINCIDENCE IS A USEFUL CLUE | rot13 | rot13 | null | {
"shift": 13
} | medium | en | 79 | 79 | synthetic_educational | null | null | [] | |
cda-0012247 | 10.2.4 10.3.9 3.3.2 5.2.10 16.4.8 16.4.10 10.6.2 12.4.9 19.4.2 2.6.4 17.2.5 6.6.6 2.6.5 9.3.2 3.4.3 14.3.1 17.3.6 8.6.2 7.4.9 1.4.1 18.6.8 8.4.5 10.2.4 7.6.3 12.1.6 13.6.3 11.1.5 3.3.9 10.2.6 7.2.2 8.5.2 16.5.4 3.5.4 6.5.9 1.2.6 18.1.9 2.6.10 20.6.8 1.4.2 16.4.1 14.6.5 10.4.8 2.2.9 15.4.1 1.4.2 12.3.2 17.6.1 8.1.2 2.4.... | 10.2.4 10.3.9 3.3.2 5.2.10 16.4.8 16.4.10 10.6.2 12.4.9 19.4.2 2.6.4 17.2.5 6.6.6 2.6.5 9.3.2 3.4.3 14.3.1 17.3.6 8.6.2 7.4.9 1.4.1 18.6.8 8.4.5 10.2.4 7.6.3 12.1.6 13.6.3 11.1.5 3.3.9 10.2.6 7.2.2 8.5.2 16.5.4 3.5.4 6.5.9 1.2.6 18.1.9 2.6.10 20.6.8 1.4.2 16.4.1 14.6.5 10.4.8 2.2.9 15.4.1 1.4.2 12.3.2 17.6.1 8.1.2 2.4.... | COLUMNAR TRANSPOSITION READS COLUMNS IN KEY ORDER CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING | arnold_andre | arnold_andre | null | {} | hard | en | 88 | 88 | synthetic_educational | null | null | [
"book_cipher_attack",
"triple_index_search"
] | Arnold-André book cipher: coordinates (page.section.word) referencing a shared text. |
bifid-v3-0309 | SOKEULLTEAYBAPX | SOKEULLTEAYBAPX | THE WIND IS WITH US | bifid | bifid | fractionation | {
"type": "keyword",
"value": "FREEDOM"
} | advanced | en | 15 | 15 | cipher_museum | 2.0 | public | null | null |
beaufort-v3-0651 | HGYFAFLNKPZDSAJPVAGJ | HGYFAFLNKPZDSAJPVAGJ | THE COMPASS POINTS TRUE | beaufort | beaufort | polyalphabetic | {
"type": "keyword",
"value": "ANCHOR"
} | intermediate | en | 20 | 20 | cipher_museum | 2.0 | public | null | null |
straddling-checkerboard-v2-0004 | 0456294251216120925 | 0456294251216120925 | STORM THE BREACH | straddling_checkerboard | straddling_checkerboard | substitution | {
"type": "top_row",
"value": "SENTORISCA"
} | advanced | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
vigenere-v3-0349 | PHVKMZVOCFGMFVRERCA | PHVKMZVOCFGMFVRERCA | THE TELESCOPE REVEALS | vigenere | vigenere | polyalphabetic | {
"type": "keyword",
"value": "WARRIOR"
} | intermediate | en | 19 | 19 | cipher_museum | 2.0 | public | null | null |
caesar-166 | SBHE FPBER NAQ FRIRA LRNEF NTB BHE SNGUREF OEBHTUG SBEGU GUVF ANGVBA | SBHE FPBER NAQ FRIRA LRNEF NTB BHE SNGUREF OEBHTUG SBEGU GUVF ANGVBA | FOUR SCORE AND SEVEN YEARS AGO OUR FATHERS BROUGHT FORTH THIS NATION | caesar | caesar | substitution | {
"type": "shift",
"value": 13
} | beginner | en | 57 | 68 | cipher_museum | 0.2 | public | null | null |
enigma-v3-0077 | PMTKRPLLUWKWRLMIHEISFAGGLNCQFLWICMNAFBYLOZKECTJRWKRDOZPGFBPLHJTWZKEXHNYUVDFEKQJUBTZXYHKO | PMTKRPLLUWKWRLMIHEISFAGGLNCQFLWICMNAFBYLOZKECTJRWKRDOZPGFBPLHJTWZKEXHNYUVDFEKQJUBTZXYHKO | TRADECRAFT IS THE ART OF CONDUCTING COVERT OPERATIONS WITHOUT ALERTING THE OPPOSITION TO YOUR PRESENCE | enigma | enigma | machine | {
"type": "rotor_start",
"value": "ABC"
} | expert | en | 88 | 88 | cipher_museum | 2.0 | public | null | null |
solitaire-056 | OYZZVHBGLBVACHOMJONIBDJRQCPYOXSPUACCZKPSNHZSRJLGTHBRSJTRTJNPKXKOFMZADLZZXITRJWYEVKWCZVRGYIZJMPGKZMOZEQKCRKVUOQVIMKDGJPHQQRVNXIHOOFVHGEYWWWBUUVLGUIXNX | OYZZVHBGLBVACHOMJONIBDJRQCPYOXSPUACCZKPSNHZSRJLGTHBRSJTRTJNPKXKOFMZADLZZXITRJWYEVKWCZVRGYIZJMPGKZMOZEQKCRKVUOQVIMKDGJPHQQRVNXIHOOFVHGEYWWWBUUVLGUIXNX | 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 | solitaire | solitaire | stream | {
"type": "none",
"value": null
} | expert | en | 149 | 149 | cipher_museum | 0.2 | public | null | null |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.