Datasets:

systemslibrarian
/

classical-cipher-corpus

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
trifid-v3-0385	DZQ+VFFL+KUFRBZDFGBOUXEBVGIZNFIMFKUYFFBZEHFVYHHCDZCH+BHRRUAYYDEVUCHQTSIBSFSMLJ	DZQ+VFFL+KUFRBZDFGBOUXEBVGIZNFIMFKUYFFBZEHFVYHHCDZCH+BHRRUAYYDEVUCHQTSIBSFSMLJ	BLESSED ARE THE MEEK FOR THEY SHALL INHERIT THE EARTH AND THE PEACEMAKERS SHALL BE CALLED SONS	trifid	trifid	fractionation	{ "type": "keyword", "value": "FREEDOM" }	advanced	en	78	78	cipher_museum	2.0	public	null	null
kama-sutra-v2-0119	QGL GUZQCVA CJ OVABQCECHA UZ Y PYQQEL CJ KUQZ PLQKLLX QGCZL KGC DYWL OCMLZ YXM QGCZL KGC PVLYW QGLD JCV LRLVA ZAZQLD MLRUZLM PA Y OIXXUXH LXOUBGLVLV Y BYQULXQ OVABQYXYEAZQ GYZ JCIXM Y DLQGCM QC VLRLYE UQZ ZLOVLQZ	QGL GUZQCVA CJ OVABQCECHA UZ Y PYQQEL CJ KUQZ PLQKLLX QGCZL KGC DYWL OCMLZ YXM QGCZL KGC PVLYW QGLD JCV LRLVA ZAZQLD MLRUZLM PA Y OIXXUXH LXOUBGLVLV Y BYQULXQ OVABQYXYEAZQ GYZ JCIXM Y DLQGCM QC VLRLYE UQZ ZLOVLQZ	THE HISTORY OF CRYPTOLOGY IS A BATTLE OF WITS BETWEEN THOSE WHO MAKE CODES AND THOSE WHO BREAK THEM FOR EVERY SYSTEM DEVISED BY A CUNNING ENCIPHERER A PATIENT CRYPTANALYST HAS FOUND A METHOD TO REVEAL ITS SECRETS	kama_sutra	kama_sutra	substitution	{ "type": "keyword", "value": "SANSKRIT" }	intermediate	en	175	212	cipher_museum	2.0	public	null	null
monoalphabetic-v2-0186	OHKKT PWEFQ FJT QEFNP QBEPE FNE WBFQ C KSSEN YKU SKN QBE TESEJPE KS KUN CPHFJT JFQCKJ	OHKKT PWEFQ FJT QEFNP QBEPE FNE WBFQ C KSSEN YKU SKN QBE TESEJPE KS KUN CPHFJT JFQCKJ	BLOOD SWEAT AND TEARS THESE ARE WHAT I OFFER YOU FOR THE DEFENSE OF OUR ISLAND NATION	monoalphabetic	monoalphabetic	substitution	{ "type": "keyword", "value": "FORTRESS" }	beginner	en	69	85	cipher_museum	2.0	public	null	null
sigaba-170	THPCDUGHFEAARMGBBYNQOBZVQSFJYJRGZJMQLVRCTOHBYAOALNTJGZV	THPCDUGHFEAARMGBBYNQOBZVQSFJYJRGZJMQLVRCTOHBYAOALNTJGZV	THE ART OF WAR IS OF VITAL IMPORTANCE TO THE STATE IT IS LIFE OR DEATH	sigaba	sigaba	machine	{ "type": "seed", "value": "SECRET" }	expert	en	55	55	cipher_museum	0.2	public	null	null
straddling-checkerboard-v2-0216	2998767172232343245213657495202326239222322924623826238211702623802366238574238232223213222322207662632995702623017070235	2998767172232343245213657495202326239222322924623826238211702623802366238574238232223213222322207662632995702623017070235	MARY QUEEN OF SCOTS WAS BEHEADED AFTER HER CIPHER LETTERS WERE DECODED BY THOMAS PHELIPPES	straddling_checkerboard	straddling_checkerboard	substitution	{ "type": "top_row", "value": "LIONSTRACE" }	advanced	en	121	121	cipher_museum	2.0	public	null	null
adfgvx-v3-0118	GXAFDFVDXDXAGAGAGADAGAADVAXFVAXAAGGD	GXAFDFVDXDXAGAGAGADAGAADVAXFVAXAAGGD	LOWER THE DRAWBRIDGE	adfgvx	adfgvx	fractionation	{ "polybius": "LIBERTY", "columnar": "FREEDOM" }	advanced	en	36	36	cipher_museum	2.0	public	null	null
affine-v3-0493	DTMBGWTMLD AY DVG MTD EL WEZBIWDAZQ WENGTD EJGTMDAEZY SADVEID MPGTDAZQ DVG EJJEYADAEZ DE CEIT JTGYGZWG	DTMBGWTMLD AY DVG MTD EL WEZBIWDAZQ WENGTD EJGTMDAEZY SADVEID MPGTDAZQ DVG EJJEYADAEZ DE CEIT JTGYGZWG	TRADECRAFT IS THE ART OF CONDUCTING COVERT OPERATIONS WITHOUT ALERTING THE OPPOSITION TO YOUR PRESENCE	affine	affine	substitution	{ "a": 5, "b": 12 }	beginner	en	88	102	cipher_museum	2.0	public	null	null
cardano-autokey-v2-0083	FALTGZKGSTQTJFVKRGAWXXVENLGDOOTLNPGENQWALAETWEHRHJJRQLBTGGIVFLTLWQTSWSNQWAYVETL	FALTGZKGSTQTJFVKRGAWXXVENLGDOOTLNPGENQWALAETWEHRHJJRQLBTGGIVFLTLWQTSWSNQWAYVETL	THE PRICE OF LIBERTY IS ETERNAL VIGILANCE AND THE WILL TO DEFEND IT AGAINST ALL FOES AND THREATS	cardano_autokey	cardano_autokey	polyalphabetic	{ "type": "keyword", "value": "MILAN" }	advanced	en	79	79	cipher_museum	2.0	public	null	null
cda-0004981	PELCGBTENCUL ERJNEQF CNGVRAPR NAQ PNERSHY GUVAXVAT FHOFGVGHGVBA PVCUREF ZNC RNPU YRGGRE GB N QVSSRERAG YRGGRE ORNHSBEG VF GUR ERPVCEBPNY BS IVTRARER NAQ QRPELCGF VGFRYS GUR XNFVFXV RKNZVANGVBA SVAQF ERCRNGRQ GEVTENZF VA PVCUREGRKG	PELCGBTENCUL ERJNEQF CNGVRAPR NAQ PNERSHY GUVAXVAT FHOFGVGHGVBA PVCUREF ZNC RNPU YRGGRE GB N QVSSRERAG YRGGRE ORNHSBEG VF GUR ERPVCEBPNY BS IVTRARER NAQ QRPELCGF VGFRYS GUR XNFVFXV RKNZVANGVBA SVAQF ERCRNGRQ GEVTENZF VA PVCUREGRKG	CRYPTOGRAPHY REWARDS PATIENCE AND CAREFUL THINKING SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER BEAUFORT IS THE RECIPROCAL OF VIGENERE AND DECRYPTS ITSELF THE KASISKI EXAMINATION FINDS REPEATED TRIGRAMS IN CIPHERTEXT	rot13	rot13	null	{ "shift": 13 }	hard	en	199	199	synthetic_educational	null	null	[ "brute_force_26", "self_inverse_check" ]	ROT-13 is Caesar with shift 13 — it is its own inverse.
caesar-v3-1534	RFC BCYB BPMN YJJMUQ YECLRQ RM CVAFYLEC GLDMPKYRGML UGRFMSR KCCRGLE DYAC RM DYAC GL NSZJGA	RFC BCYB BPMN YJJMUQ YECLRQ RM CVAFYLEC GLDMPKYRGML UGRFMSR KCCRGLE DYAC RM DYAC GL NSZJGA	THE DEAD DROP ALLOWS AGENTS TO EXCHANGE INFORMATION WITHOUT MEETING FACE TO FACE IN PUBLIC	caesar	caesar	substitution	{ "type": "shift", "value": 24 }	beginner	en	76	90	cipher_museum	2.0	public	null	null
m94-v2-0280	QGGZZJKNLWQUNJAAKFFZQBWVLRUQISWPPRXMTNVUYBCFBJELKKYTVNSGOUXWBDNZSOKDZXRCPMTW	QGGZZJKNLWQUNJAAKFFZQBWVLRUQISWPPRXMTNVUYBCFBJELKKYTVNSGOUXWBDNZSOKDZXRCPMTW	BLESSED ARE THE PURE IN HEART FOR THEY SHALL SEE GOD AND BLESSED ARE THE PEACEMAKERS AMONG US	m94	m94	machine	{ "type": "seed", "value": "LIBERTY" }	expert	en	76	76	cipher_museum	2.0	public	null	null
caesar-v3-0701	DBKNOMBKPD SC DRO KBD YP MYXNEMDSXQ MYFOBD YZOBKDSYXC GSDRYED KVOBDSXQ DRO YZZYCSDSYX DY IYEB ZBOCOXMO	DBKNOMBKPD SC DRO KBD YP MYXNEMDSXQ MYFOBD YZOBKDSYXC GSDRYED KVOBDSXQ DRO YZZYCSDSYX DY IYEB ZBOCOXMO	TRADECRAFT IS THE ART OF CONDUCTING COVERT OPERATIONS WITHOUT ALERTING THE OPPOSITION TO YOUR PRESENCE	caesar	caesar	substitution	{ "type": "shift", "value": 10 }	beginner	en	88	102	cipher_museum	2.0	public	null	null
hill-v3-0202	TGLCLHQSOXXXDKMQMDPZJOVGOXBDBJQSPXBOCAMKRFMDLYXSCJOXCABXNSBVZOOSUIIBHWLIBUFKGLIEFXGQCANNZHZONTPJHVSVLYJGJOCRSGKECRXTFPKINNBOQOJOCRYINNQLHIAUQPYGUIIBMGNLAHUIZUHV	TGLCLHQSOXXXDKMQMDPZJOVGOXBDBJQSPXBOCAMKRFMDLYXSCJOXCABXNSBVZOOSUIIBHWLIBUFKGLIEFXGQCANNZHZONTPJHVSVLYJGJOCRSGKECRXTFPKINNBOQOJOCRYINNQLHIAUQPYGUIIBMGNLAHUIZUHV	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	hill	hill	polygraphic	{ "a": 5, "b": 7, "c": 2, "d": 9 }	advanced	en	160	160	cipher_museum	2.0	public	null	null
geheimschreiber-v2-0167	YQDZRNFBQRRZCOUNSQYDUZWNDCXRPMLDAPXFIYTUTFMSQLNUN	YQDZRNFBQRRZCOUNSQYDUZWNDCXRPMLDAPXFIYTUTFMSQLNUN	ALL THAT GLITTERS IS NOT GOLD OFTEN HAVE YOU HEARD THAT TOLD	geheimschreiber	geheimschreiber	machine	{ "type": "seed", "value": "KAISER" }	expert	en	49	49	cipher_museum	2.0	public	null	null
vigenere-071	ULCEKXGJRCEGK	ULCEKXGJRCEGK	CHANGE OF PLANS	vigenere	vigenere	polyalphabetic	{ "type": "keyword", "value": "SECRET" }	intermediate	en	13	13	cipher_museum	0.2	public	null	null
kl7-v3-0020	FUVZUAGFAQEU	FUVZUAGFAQEU	GOLD FROM LEAD	kl7	kl7	machine	{ "type": "seed", "value": "NATO" }	expert	en	12	12	cipher_museum	2.0	public	null	null
kama-sutra-v3-0308	ZLLWYCTM OWYE JGKJKFTX EQWE AT FQKCMX WUE KYMN WUUKGXZYR EK EQWE LWDZL VN AQZUQ AT UWY WE EQT FWLT EZLT AZMM EQWE ZE FQKCMX VTUKLT W CYZBTGFWM MWA EQZF UWETRKGZUWM ZLJTGWEZBT XTSZYTF LKGWM XCEN	ZLLWYCTM OWYE JGKJKFTX EQWE AT FQKCMX WUE KYMN WUUKGXZYR EK EQWE LWDZL VN AQZUQ AT UWY WE EQT FWLT EZLT AZMM EQWE ZE FQKCMX VTUKLT W CYZBTGFWM MWA EQZF UWETRKGZUWM ZLJTGWEZBT XTSZYTF LKGWM XCEN	IMMANUEL KANT PROPOSED THAT WE SHOULD ACT ONLY ACCORDING TO THAT MAXIM BY WHICH WE CAN AT THE SAME TIME WILL THAT IT SHOULD BECOME A UNIVERSAL LAW THIS CATEGORICAL IMPERATIVE DEFINES MORAL DUTY	kama_sutra	kama_sutra	substitution	{ "type": "keyword", "value": "INDIA" }	intermediate	en	160	193	cipher_museum	2.0	public	null	null
caesar-v2-0438	HRUUJ YCKGZ GTJ ZKGXY ZNKYK GXK CNGZ O ULLKX EUA LUX ZNK JKLKTYK UL UAX OYRGTJ TGZOUT	HRUUJ YCKGZ GTJ ZKGXY ZNKYK GXK CNGZ O ULLKX EUA LUX ZNK JKLKTYK UL UAX OYRGTJ TGZOUT	BLOOD SWEAT AND TEARS THESE ARE WHAT I OFFER YOU FOR THE DEFENSE OF OUR ISLAND NATION	caesar	caesar	substitution	{ "type": "shift", "value": 6 }	beginner	en	69	85	cipher_museum	2.0	public	null	null
morse-code-v3-0060	-.-. .... .- .-. --. . / --- ..-. / - .... . / .-.. .. --. .... - / -... .-. .. --. .- -.. . / .. -. - --- / - .... . / ...- .- .-.. .-.. . -.-- / --- ..-. / -.. . .- - .... / .-. --- -.. . / - .... . / ... .. -..- / .... ..- -. -.. .-. . -.. / -... .-. .- ...- . / -.-. .- ...- .- .-.. .. . .-. ...	-.-. .... .- .-. --. . / --- ..-. / - .... . / .-.. .. --. .... - / -... .-. .. --. .- -.. . / .. -. - --- / - .... . / ...- .- .-.. .-.. . -.-- / --- ..-. / -.. . .- - .... / .-. --- -.. . / - .... . / ... .. -..- / .... ..- -. -.. .-. . -.. / -... .-. .- ...- . / -.-. .- ...- .- .-.. .. . .-. ...	CHARGE OF THE LIGHT BRIGADE INTO THE VALLEY OF DEATH RODE THE SIX HUNDRED BRAVE CAVALIERS	morse_code	morse_code	encoding	{ "type": "none", "value": null }	beginner	en	211	299	cipher_museum	2.0	public	null	null
cda-0008083	TCTGSTRTAUACUARRISLRTNEIPEIHEPXACASEEDONEEFDFNSNRECATTHRAEITLHCSTHIREULSANOTAUWCENRILWARIHRTOWGSEDERTPIORIYPNZRFEIICHMTALTURVSIEUBSSNYOELGTNCEZARDMSHRLCSGNCTIEOPAESSASE	TCTGSTRTAUACUARRISLRTNEIPEIHEPXACASEEDONEEFDFNSNRECATTHRAEITLHCSTHIREULSANOTAUWCENRILWARIHRTOWGSEDERTPIORIYPNZRFEIICHMTALTURVSIEUBSSNYOELGTNCEZARDMSHRLCSGNCTIEOPAESSASE	THE RAIL FENCE CIPHER WRITES TEXT IN A ZIGZAG PATTERN CLASSICAL CIPHERS TEACH WHY MODERN SECURITY MATTERS A TRANSPARENT TOOL SHOULD SHOW ITS REASONING PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN	stager_route	stager_route	null	{ "cols": 12 }	hard	en	168	168	synthetic_educational	null	null	[]
hill-v2-0334	YHWQQWNUOIANZVBKSQJBBXYHVNCMDYBKEAWPMYZUADTLVNCQBMDYPRVQPKMMWRBXWUSRUQNNQSJQBXDAMX	YHWQQWNUOIANZVBKSQJBBXYHVNCMDYBKEAWPMYZUADTLVNCQBMDYPRVQPKMMWRBXWUSRUQNNQSJQBXDAMX	THOSE WHO CANNOT REMEMBER THE PAST ARE CONDEMNED TO REPEAT IT AS PHILOSOPHER SANTAYANA OBSERVED	hill	hill	polygraphic	{ "a": 7, "b": 3, "c": 4, "d": 5 }	advanced	en	82	82	cipher_museum	2.0	public	null	null
argenti-114	31 70 19 30 46 19 55 75 84 66 69 78 76 24 45 30 58 50 76 31 19 71 88 30 58 89 42 46 75 32 72 87 47 68 12 70 19 53 11 82 47 69 87 62 89 66 86 54 50 17 68 24 45 42 53 30 27 31 82 11 87 19	31 70 19 30 46 19 55 75 84 66 69 78 76 24 45 30 58 50 76 31 19 71 88 30 58 89 42 46 75 32 72 87 47 68 12 70 19 53 11 82 47 69 87 62 89 66 86 54 50 17 68 24 45 42 53 30 27 31 82 11 87 19	THE ENEMY KNOWS THE SYSTEM DESIGN YOUR CIPHER ACCORDINGLY WITH GREAT CARE	argenti	argenti	nomenclator	{ "type": "seed", "value": "CIPHER" }	expert	en	124	185	cipher_museum	0.2	public	null	null
alberti-disk-098	AHUMGOLNBZOHLETHUCJJGWITRRAQXJHWATQGILLKERFPP	AHUMGOLNBZOHLETHUCJJGWITRRAQXJHWATQGILLKERFPP	THE REPORTS OF MY DEATH HAVE BEEN GREATLY EXAGGERATED	alberti_disk	alberti_disk	disk	{ "type": "integer", "value": 7 }	expert	en	45	45	cipher_museum	0.2	public	null	null
scytale-v2-0651	KNOWTHYSELFXX	KNOWTHYSELFXX	KNOW THYSELF	scytale	scytale	transposition	{ "type": "integer", "value": 13 }	intermediate	en	13	13	cipher_museum	2.0	public	null	null
argenti-v3-0266	75 20 11 64 39 49 59 42 25 29 13 33 28 11 24 77 69 18 57 71 65 75 63 44 42 33 75 87 27 65 61 28 15 42 75 20 29 33 11 65 48 38 33 42 59 69 13 65 63 44 88 33 29 24 67 28 87 77 65 41 11 15 69 27 28 25 29 48 77 37 39 27 75 20	75 20 11 64 39 49 59 42 25 29 13 33 28 11 24 77 69 18 57 71 65 75 63 44 42 33 75 87 27 65 61 28 15 42 75 20 29 33 11 65 48 38 33 42 59 69 13 65 63 44 88 33 29 24 67 28 87 77 65 41 11 15 69 27 28 25 29 48 77 37 39 27 75 20	THE LIGHT YOU SEE FROM DISTANT STARS LEFT THOSE SUNS THOUSANDS OF YEARS BEFORE YOUR BIRTH	argenti	argenti	nomenclator	{ "type": "seed", "value": "VATICAN" }	expert	en	148	221	cipher_museum	2.0	public	null	null
kryptos-v2-0476	WHDWGFQDMSPQEKZEDNBFHCXTTJYZRKKTJQBAZTWVMTRBTFBMHFWHHCFVEYQFDVZWMZVDNELGDWGYTF	WHDWGFQDMSPQEKZEDNBFHCXTTJYZRKKTJQBAZTWVMTRBTFBMHFWHHCFVEYQFDVZWMZVDNELGDWGYTF	LA LIBERTE GUIDANT LE PEUPLE VERS UN AVENIR MEILLEUR ET PLUS JUSTE POUR TOUS LES HOMMES LIBRES	kryptos	kryptos	polyalphabetic	{ "type": "keyword", "value": "SANBORN" }	advanced	en	78	78	cipher_museum	2.0	public	null	null
cda-0010327	GUSZR FFOUR JOFUN NQSAP HGABG FSQHE RGBZB EEBJ	GUSZR FFOUR JOFUN NQSAP HGABG FSQHE RGBZB EEBJ	THE MESSAGE WAS HIDDEN BUT NOT SECURE TOMORROW	porta	porta	null	{ "key": "CIPHER" }	medium	en	39	39	synthetic_educational	null	null	[]
lorenz-v2-0072	THEREGIMENTSHALLADVANCEAXFIRSTLIHHTSULPORTEDBYARTILLEVYONTHEEASTERNFLANKTODBY	THEREGIMENTSHALLADVANCEAXFIRSTLIHHTSULPORTEDBYARTILLEVYONTHEEASTERNFLANKTODBY	THE REGIMENT SHALL ADVANCE AT FIRST LIGHT SUPPORTED BY ARTILLERY ON THE EASTERN FLANK TODAY	lorenz	lorenz	machine	{ "type": "seed", "value": "TUNNY" }	expert	en	77	77	cipher_museum	2.0	public	null	null
cda-0017991	TICO WWKR KDTP QJWJ WJCR DEES XOMJ YAHV VSPU XXKE W	TICO WWKR KDTP QJWJ WJCR DEES XOMJ YAHV VSPU XXKE W	SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY	running_key	running_key	null	{}	medium	en	41	41	synthetic_educational	null	null	[ "index_of_coincidence", "probable_plaintext" ]	Running-key cipher: Vigenère with a very long key (e.g. a book passage).
bifid-v2-0148	VPXBXBEBRXRP	VPXBXBEBRXRP	VENI VIDI VICI	bifid	bifid	fractionation	{ "type": "keyword", "value": "FORTRESS" }	advanced	en	12	12	cipher_museum	2.0	public	null	null
cda-0020329	76 80 82 72 59 82 29 52 43 68 29 68 57 43 61 50 61 52 68 29 80 82 95 82 68 57 89 82 68 55 52 50 65 36 82 80 61 76 68 50 57 52 57 69 61 82 11 50 61 68 65 69 61 66 59 80 82 29 69 66 68 61 57 69 25 68 29 68 57 68 29 66 59 80 50 29 25 20 80 69 55 82 82 29 50 25 77 68 89 50 66 36 52 80 50 20 61 68 29 11 66 36 82 20 69 77 20...	76 80 82 72 59 82 29 52 43 68 29 68 57 43 61 50 61 52 68 29 80 82 95 82 68 57 89 82 68 55 52 50 65 36 82 80 61 76 68 50 57 52 57 69 61 82 11 50 61 68 65 69 61 66 59 80 82 29 69 66 68 61 57 69 25 68 29 68 57 68 29 66 59 80 50 29 25 20 80 69 55 82 82 29 50 25 77 68 89 50 66 36 52 80 50 20 61 68 29 11 66 36 82 20 69 77 20...	FREQUENCY ANALYSIS CAN REVEAL WEAK CIPHERS FAIL CLOSED IS A POSTURE NOT A SLOGAN ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE	wallis_cipher	wallis_cipher	null	{}	hard	en	115	115	synthetic_educational	null	null	[ "number_substitution_decode", "frequency_analysis" ]	Wallis cipher: each letter mapped to a unique two-digit number from a fixed table.
cda-0021149	APFE EWHA PWFC FOLT ECNF WFBJ SPNH AEJS IYHH KYMD OAVP JSWM	APFE EWHA PWFC FOLT ECNF WFBJ SPNH AEJS IYHH KYMD OAVP JSWM	THE FOUR SQUARE CIPHER USES TWO KEYWORD POLYBIUS SQUARES	vernam	vernam	null	{}	medium	en	48	48	synthetic_educational	null	null	[ "key_reuse_attack", "information_theoretic_proof" ]	Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP.
enigma-088	WCSPVJYPHNADHUO	WCSPVJYPHNADHUO	EVACUATE THE BASE	enigma	enigma	machine	{ "type": "rotor_start", "value": "XYZ" }	expert	en	15	15	cipher_museum	0.2	public	null	null
wheatstone-v2-0222	TEAZFJJARJLKKTAIACRLJWLSDANMDADOYRMMJBMRTYFKIMKDMKLKDORMUCETLJARFNLFKTMTEACRALTWLR	TEAZFJJARJLKKTAIACRLJWLSDANMDADOYRMMJBMRTYFKIMKDMKLKDORMUCETLJARFNLFKTMTEACRALTWLR	THE ZIMMERMANN TELEGRAM WAS DECODED BY ROOM FORTY IN LONDON AND BROUGHT AMERICA INTO THE GREAT WAR	wheatstone	wheatstone	polygraphic	{ "type": "keyword", "value": "LONDON" }	advanced	en	82	82	cipher_museum	2.0	public	null	null
affine-v2-0084	RUVDSLKNL DPAOVBA DPZKVT PZ H KHUNLYVBZ AOPUN HUK DPZKVT DPAOVBA JVBYHNL PZ BSAPTHALSF DVYAOSLZZ	RUVDSLKNL DPAOVBA DPZKVT PZ H KHUNLYVBZ AOPUN HUK DPZKVT DPAOVBA JVBYHNL PZ BSAPTHALSF DVYAOSLZZ	KNOWLEDGE WITHOUT WISDOM IS A DANGEROUS THING AND WISDOM WITHOUT COURAGE IS ULTIMATELY WORTHLESS	affine	affine	substitution	{ "a": 1, "b": 7 }	beginner	en	83	96	cipher_museum	2.0	public	null	null
wheatstone-v2-0315	NLPCLTQLHLVATSDAWLPHTSDBSDACBVADEQLKHYQLKSDBSWDLAVAPRAHEAVAQQDBHHKLSMAPEQD	NLPCLTQLHLVATSDAWLPHTSDBSDACBVADEQLKHYQLKSDBSWDLAVAPRAHEAVAQQDBHHKLSMAPEQD	FOR GOD SO LOVED THE WORLD THAT HE GAVE HIS ONLY SON THAT WHOEVER BELIEVES SHALL NOT PERISH	wheatstone	wheatstone	polygraphic	{ "type": "keyword", "value": "BRITAIN" }	advanced	en	74	74	cipher_museum	2.0	public	null	null
cda-0009598	TIG DVHNPBNMEGES HXFMEX HWHC LITWVI MGYLNB ETR ZXRISKS KNBQDRWGV OSUDTNNRQ SCG JYW VIHIRLHTZ VKI NTKMG YQ OBWCSZVXHXA FQ Z UTGIYQ ISCN CFNFHXJLLBII YFNGESU PEU KHKQ VPFGSG JF S WCABBPDNU NHXYKY	TIG DVHNPBNMEGES HXFMEX HWHC LITWVI MGYLNB ETR ZXRISKS KNBQDRWGV OSUDTNNRQ SCG JYW VIHIRLHTZ VKI NTKMG YQ OBWCSZVXHXA FQ Z UTGIYQ ISCN CFNFHXJLLBII YFNGESU PEU KHKQ VPFGSG JF S WCABBPDNU NHXYKY	THE ARCHITECTURE SHOULD MAKE MISUSE HARDER THE LIBRARY PRESERVES KNOWLEDGE FOR THE COMMUNITY THE INDEX OF COINCIDENCE IS A USEFUL CLUE SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER	trithemius	trithemius	null	{}	hard	en	164	164	synthetic_educational	null	null	[]
affine-v2-0103	AOL HTIHZZHKVY OHZ YLJLPCLK VBY TVZA BYNLUA KPZWHAJOLZ HUK HDHPAZ PUZAYBJAPVUZ MYVT SVUKVU OX	AOL HTIHZZHKVY OHZ YLJLPCLK VBY TVZA BYNLUA KPZWHAJOLZ HUK HDHPAZ PUZAYBJAPVUZ MYVT SVUKVU OX	THE AMBASSADOR HAS RECEIVED OUR MOST URGENT DISPATCHES AND AWAITS INSTRUCTIONS FROM LONDON HQ	affine	affine	substitution	{ "a": 1, "b": 7 }	beginner	en	80	93	cipher_museum	2.0	public	null	null
cda-0014957	811 826 817 815 825 812 999 801 839 809 999 823 813 833 833 836 802 841 999 826 840 859 851 844 811 862 808 812 811 999 847 860 804 833 825 806 999 832 813 872 999 808 852 873 847 857 844 819 851 801 847 822 872 999 825 841 999 841 824 841 812 858 814 812 840 999 854 813 865 812 839 859 872 999 854 825 870 999	811 826 817 815 825 812 999 801 839 809 999 823 813 833 833 836 802 841 999 826 840 859 851 844 811 862 808 812 811 999 847 860 804 833 825 806 999 832 813 872 999 808 852 873 847 857 844 819 851 801 847 822 872 999 825 841 999 841 824 841 812 858 814 812 840 999 854 813 865 812 839 859 872 999 854 825 870 999	DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX	culper_ring	culper_ring	null	{}	medium	en	67	67	synthetic_educational	null	null	[ "codebook_frequency", "number_range_analysis" ]	Culper Ring code: Washington's three-digit codebook numbers (800–999 range).
lorenz-114	WETHEPEOPLEOFTHEUNITEDSTATESMNORDERTOFORMAMOREPERFECTUNIONESTABLISHJUSTICEINSURADOMESTICTRANQUILITYPROVIDEFORTHECOMMONDEFENSEPROMOXETHEGENERALWELFARE	WETHEPEOPLEOFTHEUNITEDSTATESMNORDERTOFORMAMOREPERFECTUNIONESTABLISHJUSTICEINSURADOMESTICTRANQUILITYPROVIDEFORTHECOMMONDEFENSEPROMOXETHEGENERALWELFARE	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	lorenz	lorenz	machine	{ "type": "seed", "value": "CIPHER" }	expert	en	149	149	cipher_museum	0.2	public	null	null
cda-0016924	811 842 999 841 842 858 999 807 842 840 817 862 854 814 999 843 803 815 860 854 808 800 858 824 844 841 999 868 825 858 823 999 812 841 807 853 874 846 858 826 843 839 999	811 842 999 841 842 858 999 807 842 840 817 862 854 814 999 843 803 815 860 854 808 800 858 824 844 841 999 868 825 858 823 999 812 841 807 853 874 846 858 826 843 839 999	DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION	culper_ring	culper_ring	null	{}	medium	en	37	37	synthetic_educational	null	null	[ "codebook_frequency", "number_range_analysis" ]	Culper Ring code: Washington's three-digit codebook numbers (800–999 range).
gronsfeld-v3-0752	AIMYQUEQUEPUPWA	AIMYQUEQUEPUPWA	THE WIND IS WITH US	gronsfeld	gronsfeld	polyalphabetic	{ "type": "numeric", "value": "71828" }	intermediate	en	15	15	cipher_museum	2.0	public	null	null
m209-v2-0128	BDNMVCWARGLJCXCXKKNOFYA	BDNMVCWARGLJCXCXKKNOFYA	CARTHAGE MUST BE DESTROYED	m209	m209	machine	{ "type": "seed", "value": "FREEDOM" }	expert	en	23	23	cipher_museum	2.0	public	null	null
cda-0004300	NYL OLNLJNIEL BNKOILB CGNNLVWB RLAFVL XGHIWT JPGIXB YIPP JICYLV KBLB PIWLGV GPTLRVG NF LWJVZCN RPFJHB FA PLNNLVB	NYL OLNLJNIEL BNKOILB CGNNLVWB RLAFVL XGHIWT JPGIXB YIPP JICYLV KBLB PIWLGV GPTLRVG NF LWJVZCN RPFJHB FA PLNNLVB	THE DETECTIVE STUDIES PATTERNS BEFORE MAKING CLAIMS HILL CIPHER USES LINEAR ALGEBRA TO ENCRYPT BLOCKS OF LETTERS	monoalphabetic	monoalphabetic	null	{ "alphabet": "GRJOLATYIQHPXWFCUVBNKEMSZD" }	hard	en	96	96	synthetic_educational	null	null	[ "frequency_analysis", "pattern_words", "hill_climbing_lm" ]	Monoalphabetic substitution with an arbitrary 26-letter permutation.
playfair-v3-0689	QLBZBZTAPDAMPNEDUNDPBW	QLBZBZTAPDAMPNEDUNDPBW	THE EXPERIMENT CONFIRMS	playfair	playfair	polygraphic	{ "type": "keyword", "value": "WISDOM" }	intermediate	en	22	22	cipher_museum	2.0	public	null	null
caesar-079	UV WYPZVULYZ AHRLU	UV WYPZVULYZ AHRLU	NO PRISONERS TAKEN	caesar	caesar	substitution	{ "type": "shift", "value": 7 }	beginner	en	16	18	cipher_museum	0.2	public	null	null
lorenz-v2-0011	TARGETACQUIRED	TARGETACQUIRED	TARGET ACQUIRED	lorenz	lorenz	machine	{ "type": "seed", "value": "TUNNY" }	expert	en	14	14	cipher_museum	2.0	public	null	null
purple-v2-0107	YLNBCWRIHATANJLEYHNEROAWTLNBLNCKHUWHUDXNPAVRRZHCHADDCWRFMSTTKIISEEGEDRYTBGNUBJWEGSTCXHUZQHCLBMTOINKKBICWMBBFUDGRDKJYITWLAAKWTXVFOUBIUJIHEBNXTXE	YLNBCWRIHATANJLEYHNEROAWTLNBLNCKHUWHUDXNPAVRRZHCHADDCWRFMSTTKIISEEGEDRYTBGNUBJWEGSTCXHUZQHCLBMTOINKKBICWMBBFUDGRDKJYITWLAAKWTXVFOUBIUJIHEBNXTXE	FOURSCORE AND SEVEN YEARS AGO OUR FATHERS BROUGHT FORTH ON THIS CONTINENT A NEW NATION CONCEIVED IN LIBERTY AND DEDICATED TO THE PROPOSITION THAT ALL MEN ARE CREATED EQUAL	purple	purple	machine	{ "type": "seed", "value": "TOKYO" }	expert	en	143	143	cipher_museum	2.0	public	null	null
cda-0016313	AAAAA BAAAB BAABA BAAAA ABBAB ABBAA AABBA AAABA ABABA AAAAA ABAAA ABABB ABBAA AABAA AABAA AAABB BAAAB BAAAB BAABA BAAAA ABBAB ABBAA AABBA AABAA BAABB ABAAA AAABB AABAA ABBAA AAABA AABAA AAAAA ABABB ABBAB AAABB AABAA ABABA AAABA AAAAA ABBAA AAABA ABABA AAAAA BAAAB BAAAB ABAAA AABAB BABBA ABBBA AAAAA BAABA BAABA AABAA BA...	AAAAA BAAAB BAABA BAAAA ABBAB ABBAA AABBA AAABA ABABA AAAAA ABAAA ABABB ABBAA AABAA AABAA AAABB BAAAB BAAAB BAABA BAAAA ABBAB ABBAA AABBA AABAA BAABB ABAAA AAABB AABAA ABBAA AAABA AABAA AAAAA ABABB ABBAB AAABB AABAA ABABA AAABA AAAAA ABBAA AAABA ABABA AAAAA BAAAB BAAAB ABAAA AABAB BABBA ABBBA AAAAA BAABA BAABA AABAA BA...	A STRONG CLAIM NEEDS STRONG EVIDENCE A MODEL CAN CLASSIFY PATTERNS BUT IT CAN ALSO BE WRONG INDEX OF COINCIDENCE MEASURES LETTER FREQUENCY DISTRIBUTION HISTORICAL CIPHERS ARE TEACHERS NOT PROTECTION	bacon_cipher	bacon_cipher	null	{}	hard	en	845	845	synthetic_educational	null	null	[ "five_bit_decode", "ab_frequency_analysis" ]	Bacon's biliteral cipher: each letter encoded as 5-bit A/B string.
cda-0022090	WL MLG XLMUFHV LYUFHXZGRLM DRGS VMXIBKGRLM GLNLIILD	WL MLG XLMUFHV LYUFHXZGRLM DRGS VMXIBKGRLM GLNLIILD	DO NOT CONFUSE OBFUSCATION WITH ENCRYPTION TOMORROW	atbash	atbash	null	{}	medium	en	45	45	synthetic_educational	null	null	[ "self_inverse_check", "frequency_analysis" ]	Atbash maps A↔Z, B↔Y, … and is its own inverse.
vic-v3-0002	6891909091080899258361868613	6891909091080899258361868613	CROSS THE RUBICON NOW	vic	vic	substitution	{ "type": "keyword", "value": "HOLLOW" }	advanced	en	28	28	cipher_museum	2.0	public	null	null
cda-0013512	Γ Γ· ⌐· ⌐· Γ· L ⌐ ─ Γ r· L └ └ ┌ ⌐ ─ Γ· ─ K ┌· ┘· Γ X· r L Γ ┐· X· ¬ └ Γ· r ┐ L ⌒· r ┌· ⌒· ┐· K ┘· ¬· ┌· ⌐ ┐· r· ⌒· Γ· ─ ─ Γ· ─ L K L L ─ X L K· L ─ K ⌒· X Γ· ⌣ ┐· X· ¬ └ Γ· r Γ· ─ ⌐· ┌· ⌐ X K ┌· X· r K X· ┌· L Γ L X L ┌· K· L X r ⌐ ┌· L ⌐· X· └ Γ L X Γ· ¬· ─ r ⌐ L X ⌐ ┌· X r· Γ· ⌐· K L Γ K r· L ⌐ └ ┐· r· ⌐ ¬ L K ¬ ⌒· ...	Γ Γ· ⌐· ⌐· Γ· L ⌐ ─ Γ r· L └ └ ┌ ⌐ ─ Γ· ─ K ┌· ┘· Γ X· r L Γ ┐· X· ¬ └ Γ· r ┐ L ⌒· r ┌· ⌒· ┐· K ┘· ¬· ┌· ⌐ ┐· r· ⌒· Γ· ─ ─ Γ· ─ L K L L ─ X L K· L ─ K ⌒· X Γ· ⌣ ┐· X· ¬ └ Γ· r Γ· ─ ⌐· ┌· ⌐ X K ┌· X· r K X· ┌· L Γ L X L ┌· K· L X r ⌐ ┌· L ⌐· X· └ Γ L X Γ· ¬· ─ r ⌐ L X ⌐ ┌· X r· Γ· ⌐· K L Γ K r· L ⌐ └ ┐· r· ⌐ ¬ L K ¬ ⌒· ...	DIFFIE AND HELLMAN INTRODUCED PUBLIC KEY CRYPTOGRAPHY IN NINETEEN SEVENTY SIX PUBLIC INFRASTRUCTURE DESERVES CAREFUL DESIGN CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS	pigpen	pigpen	null	{}	medium	en	63	63	synthetic_educational	null	null	[ "symbol_frequency", "grid_position_decode" ]	Pigpen cipher: letters encoded as positions in tic-tac-toe and X grids.
columnar-transposition-v3-0776	ELAEDGEUUADOISRVHPLGLBSCMEENNNSOOLNECSOSEORYHDOEELMEGMLCTIATTNLAYOIOIHWIAHAHMARWEITSUEA	ELAEDGEUUADOISRVHPLGLBSCMEENNNSOOLNECSOSEORYHDOEELMEGMLCTIATTNLAYOIOIHWIAHAHMARWEITSUEA	CALL ME ISHMAEL SOME YEARS AGO NEVER MIND HOW LONG PRECISELY I THOUGHT I WOULD SAIL ABOUT AND SEE THE OCEAN	columnar_transposition	columnar_transposition	transposition	{ "type": "keyword", "value": "JUSTICE" }	intermediate	en	87	87	cipher_museum	2.0	public	null	null
kryptos-v2-0094	INLUIRAUKJWFFQVIXFZXVNFRLQMPJIBKFEHBFUGJJIHOVPMTWNKWCELVFEIBAEVHNELUPFFXDPXRJXBCKZCP	INLUIRAUKJWFFQVIXFZXVNFRLQMPJIBKFEHBFUGJJIHOVPMTWNKWCELVFEIBAEVHNELUPFFXDPXRJXBCKZCP	CODED TRANSMISSION INDICATES ENEMY FORCES ASSEMBLING ALONG THE BORDER WITH HEAVY ARTILLERY UNITS	kryptos	kryptos	polyalphabetic	{ "type": "keyword", "value": "SHADOW" }	advanced	en	84	84	cipher_museum	2.0	public	null	null
running-key-068	ACMHTFFWMBCO	ACMHTFFWMBCO	HOLD POSITION	running_key	running_key	polyalphabetic	{ "type": "text", "value": "Shakespeare paraphrase" }	intermediate	en	12	12	cipher_museum	0.2	public	null	null
red-type-a-v2-0148	JECOHUILRCUPKOOT	JECOHUILRCUPKOOT	DIVIDE AND CONQUER	red_type_a	red_type_a	machine	{ "type": "keyword", "value": "YAMATO" }	advanced	en	16	16	cipher_museum	2.0	public	null	null
great-cipher-123	116 165 150 134 166 154 123 177 108 181 103 153	116 165 150 134 166 154 123 177 108 181 103 153	THE EAGLE HAS LANDED	great_cipher	great_cipher	nomenclator	{ "type": "seed", "value": "SECRET" }	expert	en	36	47	cipher_museum	0.2	public	null	null
geez-monastic-v3-0078	LAJIJPIIMHTPVVHKUPDJBLULHJFQAPBDJYBXHMOPLYHBKYLAHNLOJJLYBDXPQJLHXPQJYBTNCVYQ	LAJIJPIIMHTPVVHKUPDJBLULHJFQAPBDJYBXHMOPLYHBKYLAHNLOJJLYBDXPQJLHXPQJYBTNCVYQ	THE DEAD DROP ALLOWS AGENTS TO EXCHANGE INFORMATION WITHOUT MEETING FACE TO FACE IN PUBLIC	geez_monastic	geez_monastic	substitution	{ "type": "keyword", "value": "ETHIOPIA" }	advanced	en	76	76	cipher_museum	2.0	public	null	null
caesar-v2-1327	YD JXU RUWYDDYDW WET SHUQJUT JXU XUQLUD QDT JXU UQHJX QDT TQHADUII MQI KFED JXU VQSU EV TUUF	YD JXU RUWYDDYDW WET SHUQJUT JXU XUQLUD QDT JXU UQHJX QDT TQHADUII MQI KFED JXU VQSU EV TUUF	IN THE BEGINNING GOD CREATED THE HEAVEN AND THE EARTH AND DARKNESS WAS UPON THE FACE OF DEEP	caesar	caesar	substitution	{ "type": "shift", "value": 16 }	beginner	en	75	92	cipher_museum	2.0	public	null	null
kama-sutra-v3-0131	WIL OCDBXUU BCHQWU WYSL	WIL OCDBXUU BCHQWU WYSL	THE COMPASS POINTS TRUE	kama_sutra	kama_sutra	substitution	{ "type": "keyword", "value": "VATSYANA" }	intermediate	en	20	23	cipher_museum	2.0	public	null	null
cardano-autokey-v3-0173	IDRNEVBPTWVMZHWAHTLHTGKMWWZJZGZXAYFIANUNTNLRLDWPPGVBWBBJZVMVSLLHPNFGTLKSZZUOKVBUQ	IDRNEVBPTWVMZHWAHTLHTGKMWWZJZGZXAYFIANUNTNLRLDWPPGVBWBBJZVMVSLLHPNFGTLKSZZUOKVBUQ	DARWIN OBSERVED THAT SPECIES EVOLVE THROUGH NATURAL SELECTION OVER VAST SPANS OF GEOLOGIC TIME	cardano_autokey	cardano_autokey	polyalphabetic	{ "type": "keyword", "value": "FLORENCE" }	advanced	en	81	81	cipher_museum	2.0	public	null	null
cda-0020235	YHMZ PPHA QHXS DXGL AYFV RHBC SWZE UAGR MLML PDIL NMST RUHL IIPH EYLS SLRV JDUL PESK XXAW SIVW BHUI KCYC GTBI IQJN KPVZ SKXL USTT YWRF VRTH ATOZ GWUN WEKT RSSJ IQKJ YEHK WCXV NDAS OTHN TJTP WWAM WMWD THHP PWMM KLRP XSLW SYSB SSAS QHKZ IUML HTAW MBFH SOBL K	YHMZ PPHA QHXS DXGL AYFV RHBC SWZE UAGR MLML PDIL NMST RUHL IIPH EYLS SLRV JDUL PESK XXAW SIVW BHUI KCYC GTBI IQJN KPVZ SKXL USTT YWRF VRTH ATOZ GWUN WEKT RSSJ IQKJ YEHK WCXV NDAS OTHN TJTP WWAM WMWD THHP PWMM KLRP XSLW SYSB SSAS QHKZ IUML HTAW MBFH SOBL K	THE ONE TIME PAD IS THEORETICALLY UNBREAKABLE IF USED CORRECTLY THE FRIEDMAN TEST USES THE INDEX OF COINCIDENCE TO ESTIMATE KEY LENGTH TWO SQUARE CIPHER ENCRYPTS DIGRAPHS WITH TWO POLYBIUS ALPHABETS THE BEST LESSONS SHOW WHERE THE METHOD FAILS	running_key	running_key	null	{}	hard	en	205	205	synthetic_educational	null	null	[ "index_of_coincidence", "probable_plaintext" ]	Running-key cipher: Vigenère with a very long key (e.g. a book passage).
bifid-v2-0689	GTNLEOOXSEUAQTERDNUIPGTBLPNQTOLBKNTQBNDXDQRDMBFFRPFUREUBLTQRPBLGPEIPFGROGCXHEMPHNEXOGADHCNGNIERERKXPEHIHHDFCEWDPEINPOPRIXRTDHRDKDFPAITWAHWARRQD	GTNLEOOXSEUAQTERDNUIPGTBLPNQTOLBKNTQBNDXDQRDMBFFRPFUREUBLTQRPBLGPEIPFGROGCXHEMPHNEXOGADHCNGNIERERKXPEHIHHDFCEWDPEINPOPRIXRTDHRDKDFPAITWAHWARRQD	FOURSCORE AND SEVEN YEARS AGO OUR FATHERS BROUGHT FORTH ON THIS CONTINENT A NEW NATION CONCEIVED IN LIBERTY AND DEDICATED TO THE PROPOSITION THAT ALL MEN ARE CREATED EQUAL	bifid	bifid	fractionation	{ "type": "keyword", "value": "TRIUMPH" }	advanced	en	143	143	cipher_museum	2.0	public	null	null
confederate-vigenere-v3-0174	XINPXSBSFQPAQRULJBGSQGPRGMCAFVRKVIXLZGNQUKQURWEPVLVOMHGKVMCYFVBUSQVZFVRVLV	XINPXSBSFQPAQRULJBGSQGPRGMCAFVRKVIXLZGNQUKQURWEPVLVOMHGKVMCYFVBUSQVZFVRVLV	GALILEO POINTED HIS TELESCOPE AT THE HEAVENS AND CONFIRMED THAT THE EARTH ORBITS THE SUN	confederate_vigenere	confederate_vigenere	polyalphabetic	{ "type": "keyword", "value": "RICHMOND" }	intermediate	en	74	74	cipher_museum	2.0	public	null	null
vigenere-vf-0061	XUMSMTLRUGFIGVITEOPIMYFHIEQJPLI	XUMSMTLRUGFIGVITEOPIMYFHIEQJPLI	THE MATHEMATICIAN SOLVES THE RIDDLE	vigenere	vigenere	polyalphabetic	{ "type": "keyword", "value": "ENIGMA" }	intermediate	en	31	31	cipher_museum	2.0	public	null	null
copiale-v2-0093	B1 L1 R8 C5 B8 B0 K6 A4 B3 R8 K0 I1 D2 B1 A4 P6 V4 I8 C4 O1 X7 L9 C5 T0 P6 M2 P2 A6 K3 X0 Z1 H2 C0 C9 M2 O8 M5 P2 U4 Z1 X2 O5 B2 U4 R5 Q6 P6 B2 A2 V4 K0 C9 T8 S1 T8 O4 R1 G7 T1 R8 O6 A1 C8 C9 U6 O4 B7 A4 Q8 Q7 B6 T0 Y0 Q1 N3 Q7 C7 B1 T4 I6 U4 M5	B1 L1 R8 C5 B8 B0 K6 A4 B3 R8 K0 I1 D2 B1 A4 P6 V4 I8 C4 O1 X7 L9 C5 T0 P6 M2 P2 A6 K3 X0 Z1 H2 C0 C9 M2 O8 M5 P2 U4 Z1 X2 O5 B2 U4 R5 Q6 P6 B2 A2 V4 K0 C9 T8 S1 T8 O4 R1 G7 T1 R8 O6 A1 C8 C9 U6 O4 B7 A4 Q8 Q7 B6 T0 Y0 Q1 N3 Q7 C7 B1 T4 I6 U4 M5	THE PACKAGE CONTAINS BLUEPRINTS FOR THE NEW TORPEDO GUIDANCE SYSTEM DELIVER TO ADMIRAL SMITH NOW	copiale	copiale	substitution	{ "type": "keyword", "value": "MASONIC" }	advanced	en	164	245	cipher_museum	2.0	public	null	null
caesar-v2-0798	DRO MYEBCO YP DBEO VYFO XOFOB NSN BEX CWYYDR DRBYEQR KQOC	DRO MYEBCO YP DBEO VYFO XOFOB NSN BEX CWYYDR DRBYEQR KQOC	THE COURSE OF TRUE LOVE NEVER DID RUN SMOOTH THROUGH AGES	caesar	caesar	substitution	{ "type": "shift", "value": 10 }	beginner	en	47	57	cipher_museum	2.0	public	null	null
nihilist-v3-0148	52 48 28 56 66 53 57 52 48 26 55 57 83 49 55 29 59 59 48 57 57 62 57 29 35 58 56 56 46 27 65 49 68 75 77 62 29 66 26 36 54 80 62 57 29 46 67 84 60 66 29 55 35 67 67 77 72 57 35 47 37 83 67 54 36 37 25 36	52 48 28 56 66 53 57 52 48 26 55 57 83 49 55 29 59 59 48 57 57 62 57 29 35 58 56 56 46 27 65 49 68 75 77 62 29 66 26 36 54 80 62 57 29 46 67 84 60 66 29 55 35 67 67 77 72 57 35 47 37 83 67 54 36 37 25 36	THE ONLY THING NECESSARY FOR THE TRIUMPH OF EVIL IS FOR GOOD MEN TO DO NOTHING AT ALL	nihilist	nihilist	fractionation	{ "polybius": "LIBERTY", "keyword": "FREEDOM" }	advanced	en	136	203	cipher_museum	2.0	public	null	null
purple-v2-0327	NQEOIVQIWSLZMCSZBYOCFHOPXIWOUKUPXALZRYNSTWPOCOEEXZHPIGJUBUEEVCXMLAJBPXJMXEJFR	NQEOIVQIWSLZMCSZBYOCFHOPXIWOUKUPXALZRYNSTWPOCOEEXZHPIGJUBUEEVCXMLAJBPXJMXEJFR	THE REGIMENT SHALL ADVANCE AT FIRST LIGHT SUPPORTED BY ARTILLERY ON THE EASTERN FLANK TODAY	purple	purple	machine	{ "type": "seed", "value": "SAKURA" }	expert	en	77	77	cipher_museum	2.0	public	null	null
slidex-v2-0320	EZWYGRODCXMMGCGOFDKVUMVZSJVZNODGLFMUGRNMGXRXXEZGAOCPLPOFNOJMCFQXFVPWUNNNBQCU	EZWYGRODCXMMGCGOFDKVUMVZSJVZNODGLFMUGRNMGXRXXEZGAOCPLPOFNOJMCFQXFVPWUNNNBQCU	BLESSED ARE THE PURE IN HEART FOR THEY SHALL SEE GOD AND BLESSED ARE THE PEACEMAKERS AMONG US	slidex	slidex	transposition	{ "type": "keyword", "value": "FREEDOM" }	advanced	en	76	76	cipher_museum	2.0	public	null	null
kryha-v2-0022	JNOSWFYPXPEJLFNE	JNOSWFYPXPEJLFNE	DIVIDE AND CONQUER	kryha	kryha	machine	{ "type": "keyword", "value": "MUNICH" }	expert	en	16	16	cipher_museum	2.0	public	null	null
morse-code-v2-0012	-- .. ... ... .. --- -. / .- -.-. -.-. --- -- .--. .-.. .. ... .... . -..	-- .. ... ... .. --- -. / .- -.-. -.-. --- -- .--. .-.. .. ... .... . -..	MISSION ACCOMPLISHED	morse_code	morse_code	encoding	{ "type": "none", "value": null }	beginner	en	54	73	cipher_museum	2.0	public	null	null
straddling-checkerboard-v2-0186	2003322574239694226239856262352398237426961324242387637224386262322232423452332437281509422496134	2003322574239694226239856262352398237426961324242387637224386262322232423452332437281509422496134	BLOOD SWEAT AND TEARS THESE ARE WHAT I OFFER YOU FOR THE DEFENSE OF OUR ISLAND NATION	straddling_checkerboard	straddling_checkerboard	substitution	{ "type": "top_row", "value": "LIONSTRACE" }	advanced	en	97	97	cipher_museum	2.0	public	null	null
slidex-v3-0010	ESRAFNEDKDQGPURA	ESRAFNEDKDQGPURA	PER ASPERA AD ASTRA	slidex	slidex	transposition	{ "type": "keyword", "value": "BLETCHLEY" }	advanced	en	16	16	cipher_museum	2.0	public	null	null
cda-0021042	JUASD BPCEK LXJIQ AKYMB YXEVM MBAEE YOJXX LEQCY RHVSX KQDOX LLWDA GHLHF LPQXP ANBNG ORMJT SSAVO WOKYT WGOUZ HJMKQ ML	JUASD BPCEK LXJIQ AKYMB YXEVM MBAEE YOJXX LEQCY RHVSX KQDOX LLWDA GHLHF LPQXP ANBNG ORMJT SSAVO WOKYT WGOUZ HJMKQ ML	ALAN TURING BROKE ENIGMA WITH CRIBS AND THE BOMBE MACHINE DOUBLE TRANSPOSITION APPLIES COLUMNAR ENCRYPTION TWICE	vernam	vernam	null	{}	hard	en	97	97	synthetic_educational	null	null	[ "key_reuse_attack", "information_theoretic_proof" ]	Vernam cipher: XOR-based stream cipher; with a random key equivalent to OTP.
commercial-code-v3-0061	TABAB BABAB ZUZUZ CAZUZ BAZUZ ZAZUZ ZAZUZ PAZUZ GAZUZ XUZUZ CABAB ZUZUZ QAZUZ LAZUZ FAZUZ DEZUZ BAZUZ GEZUZ XUZUZ ZUZUZ BAZUZ QAZUZ GAZUZ WAZUZ LAZUZ DAZUZ BAZUZ RAZUZ XUZUZ ZUZUZ FAZUZ LAZUZ CEZUZ GAZUZ XUZUZ ZUZUZ CAZUZ SAZUZ QAZUZ CAZUZ GAZUZ WAZUZ XAZUZ XUZUZ ZUZUZ FAZUZ GAZUZ XAZUZ ZAZUZ WAZUZ SAZUZ GEZUZ GAZUZ FA...	TABAB BABAB ZUZUZ CAZUZ BAZUZ ZAZUZ ZAZUZ PAZUZ GAZUZ XUZUZ CABAB ZUZUZ QAZUZ LAZUZ FAZUZ DEZUZ BAZUZ GEZUZ XUZUZ ZUZUZ BAZUZ QAZUZ GAZUZ WAZUZ LAZUZ DAZUZ BAZUZ RAZUZ XUZUZ ZUZUZ FAZUZ LAZUZ CEZUZ GAZUZ XUZUZ ZUZUZ CAZUZ SAZUZ QAZUZ CAZUZ GAZUZ WAZUZ XAZUZ XUZUZ ZUZUZ FAZUZ GAZUZ XAZUZ ZAZUZ WAZUZ SAZUZ GEZUZ GAZUZ FA...	AT THE BATTLE OF MIDWAY AMERICAN DIVE BOMBERS DESTROYED FOUR JAPANESE CARRIERS IN MINUTES	commercial_code	commercial_code	codebook	{ "type": "none", "value": null }	expert	en	455	545	cipher_museum	2.0	public	null	null
stager-route-v3-0039	TMRMEHENSXTEXCXXOPENXXFRIIX	TMRMEHENSXTEXCXXOPENXXFRIIX	THE EXPERIMENT CONFIRMS	stager_route	stager_route	transposition	{ "type": "integer", "value": 9 }	expert	en	27	27	cipher_museum	2.0	public	null	null
adfgx-250	ADGDAAAFFGXFAXXDDDFAAGDADFADDG	ADGDAAAFFGXFAXXDDDFAAGDADFADDG	FORWARD MARCH NOW	adfgx	adfgx	fractionation	{ "polybius": "KEYWORD", "columnar": "TRAFIC" }	advanced	en	30	30	cipher_museum	0.2	public	null	null
geheimschreiber-v2-0139	KMODPGZSOHIAC	KMODPGZSOHIAC	STAY THE COURSE	geheimschreiber	geheimschreiber	machine	{ "type": "seed", "value": "KAISER" }	expert	en	13	13	cipher_museum	2.0	public	null	null
geheimschreiber-112	IHKZROOSULLLKCYHOCQFINAHZZRWRLLFHPNFFAOBEUTGWPAMZHOWOXEZZP	IHKZROOSULLLKCYHOCQFINAHZZRWRLLFHPNFFAOBEUTGWPAMZHOWOXEZZP	IN THE BEGINNING WAS THE WORD AND THE WORD WAS WITH GOD AND FULL OF GRACE	geheimschreiber	geheimschreiber	machine	{ "type": "seed", "value": "CIPHER" }	expert	en	58	58	cipher_museum	0.2	public	null	null
cda-0018534	1939 05697 02857 01621 01292 4179 00333 04489 1575 06036 06313 02842 04144 0361 6316 1649 1281 03487 01571 07915 03779 1582 04482 2271 6355 02525 01891 5663 04733 04165 06035 6335 00339 06336 2923 06042 06338 2908 0964 05972 05983 6676 0692 5979 06334 02885 6312 6681 6332 02917 4789 4417 01013 02913 05061 2563 01619 57...	1939 05697 02857 01621 01292 4179 00333 04489 1575 06036 06313 02842 04144 0361 6316 1649 1281 03487 01571 07915 03779 1582 04482 2271 6355 02525 01891 5663 04733 04165 06035 6335 00339 06336 2923 06042 06338 2908 0964 05972 05983 6676 0692 5979 06334 02885 6312 6681 6332 02917 4789 4417 01013 02913 05061 2563 01619 57...	FRIEDMAN ESTIMATED KEY LENGTH FROM STATISTICS SUBSTITUTION CIPHERS MAP EACH LETTER TO A DIFFERENT LETTER	zimmermann	zimmermann	null	{}	hard	en	90	90	synthetic_educational	null	null	[ "codebook_frequency", "number_group_analysis" ]	Zimmermann Telegram code: WWI German diplomatic numeric codebook cipher.
cda-0017897	94 14 40 27 99 34 23 27 62 27 67 30 22 45 14 91 63 32 91 11 88 45 32 30 62 50 88 26 78 27 39 30 58 33 2 11 72 70 93 70 24 11 60 22 63 43 24 3 76 99 50 61 22 30 52 32 43 48 11 1 62 49 57 49 68 43 33 36 14 33 70 35 22 2 11 91 94 48 34 33 63 23 82 60 59 99 24 80 48 92	94 14 40 27 99 34 23 27 62 27 67 30 22 45 14 91 63 32 91 11 88 45 32 30 62 50 88 26 78 27 39 30 58 33 2 11 72 70 93 70 24 11 60 22 63 43 24 3 76 99 50 61 22 30 52 32 43 48 11 1 62 49 57 49 68 43 33 36 14 33 70 35 22 2 11 91 94 48 34 33 63 23 82 60 59 99 24 80 48 92	HUMAN READABLE OUTPUT SHOULD SHOW ALL REASONING STEPS GRONSFELD USES A DIGIT SEQUENCE AS THE REPEATING KEY	homophonic	homophonic	null	{}	hard	en	90	90	synthetic_educational	null	null	[ "frequency_analysis", "multiple_ciphertext_attack" ]	Homophonic substitution: each letter maps to multiple possible numbers.
cda-0016189	25 69 69 11 82 11 59 52 68 66 50 69 29 68 57 66 69 69 57 61 82 73 65 57 68 50 29 66 36 82 50 80 57 50 77 50 66 61 68 66 80 68 29 61 65 68 80 82 29 66 66 69 69 57 61 36 69 59 57 11 61 36 69 89 50 66 61 80 82 68 61 69 29 50 29 25	25 69 69 11 82 11 59 52 68 66 50 69 29 68 57 66 69 69 57 61 82 73 65 57 68 50 29 66 36 82 50 80 57 50 77 50 66 61 68 66 80 68 29 61 65 68 80 82 29 66 66 69 69 57 61 36 69 59 57 11 61 36 69 89 50 66 61 80 82 68 61 69 29 50 29 25	GOOD EDUCATIONAL TOOLS EXPLAIN THEIR LIMITS A TRANSPARENT TOOL SHOULD SHOW ITS REASONING	wallis_cipher	wallis_cipher	null	{}	medium	en	76	76	synthetic_educational	null	null	[ "number_substitution_decode", "frequency_analysis" ]	Wallis cipher: each letter mapped to a unique two-digit number from a fixed table.
cda-0020704	.--. --- .-.. -.-- .- .-.. .--. .... .- -... . - .. -.-. / -.-. .. .--. .... . .-. ... / ..- ... . / -- ..- .-.. - .. .--. .-.. . / .- .-.. .--. .... .- -... . - / ... .... .. ..-. - ...	.--. --- .-.. -.-- .- .-.. .--. .... .- -... . - .. -.-. / -.-. .. .--. .... . .-. ... / ..- ... . / -- ..- .-.. - .. .--. .-.. . / .- .-.. .--. .... .- -... . - / ... .... .. ..-. - ...	POLYALPHABETIC CIPHERS USE MULTIPLE ALPHABET SHIFTS	morse_code	morse_code	null	{}	medium	en	46	46	synthetic_educational	null	null	[ "symbol_decode", "frequency_analysis" ]	Morse code: dots and dashes; word-separated by / symbol.
cda-0004971	FBITFA VIMGYNG ULF FUSIECJC EZ XIWNH QSTNCLPRT JWWSSQD VHBWVWNV VRDJAWBMOYH LO E ENBWSMCZCLPR QFCWFVO BXUEW IJUS CVFFT PPRPFUSIECJCLD WVGBWJXVYRRO JBNU FMSTJM LT E QTBWVVF SXW B WMTPDO	FBITFA VIMGYNG ULF FUSIECJC EZ XIWNH QSTNCLPRT JWWSSQD VHBWVWNV VRDJAWBMOYH LO E ENBWSMCZCLPR QFCWFVO BXUEW IJUS CVFFT PPRPFUSIECJCLD WVGBWJXVYRRO JBNU FMSTJM LT E QTBWVVF SXW B WMTPDO	CAESAR SHIFTED THE ALPHABET BY THREE POSITIONS ENTROPY MEASURES UNCERTAINTY IN A DISTRIBUTION PATTERN WORDS HELP BREAK MONOALPHABETIC SUBSTITUTION FAIL CLOSED IS A POSTURE NOT A SLOGAN	gronsfeld	gronsfeld	null	{ "key": "314159" }	hard	en	158	158	synthetic_educational	null	null	[ "kasiski_examination", "digit_key_brute_force" ]	Gronsfeld: Vigenère variant with a digit-only key (0–9 per position).
cda-0010445	GNPHE WFMQY OVZEG UBHYR PSGRF GSRIA QSEFQ FHGWA LFVNZ SFFOU NJOFV WRRRA OHFBB GFRQG FNUBA SEHYL	GNPHE WFMQY OVZEG UBHYR PSGRF GSRIA QSEFQ FHGWA LFVNZ SFFOU NJOFV WRRRA OHFBB GFRQG FNUBA SEHYL	SECURITY CLAIMS SHOULD BE TESTED UNDER SCRUTINY THE MESSAGE WAS HIDDEN BUT NOT SECURE HONESTLY	porta	porta	null	{ "key": "LIBRARY" }	hard	en	80	80	synthetic_educational	null	null	[]
scytale-v2-0627	HRDFEPZLEILNESEOISEASSONATRUGWRVTTOEDASRHIOAHHKFQRFTTLHIEEIOUMOHELOLORNRAYRNEAUABIGERCOINTRBJDTSTOCNTTWLEGHTERTEHAIECEEXRPOTECTFTOAXSSBECKHOIVRXFOEEOAARVEGXIRRNRTLCEROX	HRDFEPZLEILNESEOISEASSONATRUGWRVTTOEDASRHIOAHHKFQRFTTLHIEEIOUMOHELOLORNRAYRNEAUABIGERCOINTRBJDTSTOCNTTWLEGHTERTEHAIECEEXRPOTECTFTOAXSSBECKHOIVRXFOEEOAARVEGXIRRNRTLCEROX	HEADQUARTERS FIRST ARMY CORPS ORDERS FOR OCTOBER FOURTH NINETEEN EIGHTEEN THE CORPS WILL ATTACK AT ZERO HOUR WITH ALL AVAILABLE FORCES THE OBJECTIVE IS THE RIDGE OVERLOOKING THE ARGONNE FOREST	scytale	scytale	transposition	{ "type": "integer", "value": 12 }	intermediate	en	168	168	cipher_museum	2.0	public	null	null
beaufort-v3-0773	KVIPODEGKVWJSFKJYYOA	KVIPODEGKVWJSFKJYYOA	STEAM POWER TRANSFORMS	beaufort	beaufort	polyalphabetic	{ "type": "keyword", "value": "COMPASS" }	intermediate	en	20	20	cipher_museum	2.0	public	null	null
geez-monastic-v2-0120	LAJXNBIPOJBLPVTMHCVJOHXQHOONBYQPLYHBYULAPLHXMJTMHINQYBDPLHBJTHYBLJYLAJMJFPQLVRHMPTTMHFYOPLJVRPOJUUPDJUJVJQLJIPLPBHLAJMTHYBLXMJWNJBLVRLAJOJUUPDJUAPZJOJPBYBDPBIMJXJMLHTARUYQPVQHBQJTLU	LAJXNBIPOJBLPVTMHCVJOHXQHOONBYQPLYHBYULAPLHXMJTMHINQYBDPLHBJTHYBLJYLAJMJFPQLVRHMPTTMHFYOPLJVRPOJUUPDJUJVJQLJIPLPBHLAJMTHYBLXMJWNJBLVRLAJOJUUPDJUAPZJOJPBYBDPBIMJXJMLHTARUYQPVQHBQJTLU	THE FUNDAMENTAL PROBLEM OF COMMUNICATION IS THAT OF REPRODUCING AT ONE POINT EITHER EXACTLY OR APPROXIMATELY A MESSAGE SELECTED AT ANOTHER POINT FREQUENTLY THE MESSAGES HAVE MEANING AND REFER TO PHYSICAL CONCEPTS	geez_monastic	geez_monastic	substitution	{ "type": "keyword", "value": "ETHIOPIA" }	advanced	en	181	181	cipher_museum	2.0	public	null	null
cda-0018196	THAN ZIEL INDZ EHAK EHDI GLIN ITKI NAHJ AHDZ EHTS AHDZ EHGA HDZE HMOA SITK INCL AGIA IHLI NDZE HGAH NODA IHDI BEHD ZEHD IBEH WOLL ACHE EGAH DZEH CLAG IAIH DZEH WOLL ACHE ETHA NZIE TKIN TSAH AHJA HKLI ZZIE DZEH TSAH ASZI HGLO EIHA KHAG AHBE	THAN ZIEL INDZ EHAK EHDI GLIN ITKI NAHJ AHDZ EHTS AHDZ EHGA HDZE HMOA SITK INCL AGIA IHLI NDZE HGAH NODA IHDI BEHD ZEHD IBEH WOLL ACHE EGAH DZEH CLAG IAIH DZEH WOLL ACHE ETHA NZIE TKIN TSAH AHJA HKLI ZZIE DZEH TSAH ASZI HGLO EIHA KHAG AHBE	THE VIGENERE CIPHER USES A REPEATING KEYWORD	navajo_code	navajo_code	null	{}	hard	en	192	192	synthetic_educational	null	null	[ "codebook_frequency", "word_list_attack" ]	Navajo Code Talker cipher: Navajo words represent English letters.
typex-v3-0036	SLCAPWXHGHDMGWUDGA	SLCAPWXHGHDMGWUDGA	GRAVITY EXPLAINS ALL	typex	typex	machine	{ "type": "keyword", "value": "LONDON" }	expert	en	18	18	cipher_museum	2.0	public	null	null
jefferson-disk-v3-0091	TYCNQBMAMZCNILCNMWGKMPMVMTIIZESWHNVEMCIGTIROIMNQRFHFMOSHIBUXNFRRDYIURNBJIMTZJGGYML	TYCNQBMAMZCNILCNMWGKMPMVMTIIZESWHNVEMCIGTIROIMNQRFHFMOSHIBUXNFRRDYIURNBJIMTZJGGYML	ZERO KNOWLEDGE PROOFS ALLOW ONE PARTY TO PROVE KNOWLEDGE WITHOUT REVEALING THE KNOWLEDGE ITSELF	jefferson_disk	jefferson_disk	disk	{ "type": "disk_order", "value": "4,2,6,1,3,5" }	expert	en	82	82	cipher_museum	2.0	public	null	null
kama-sutra-v2-0104	GLYMTIYVQLVZ OCXJUVDZ QGYQ QGL UXQLEEUHLXOL VLBCVQ UZ YOOIVYQL YXM VLTIUVLZ UDDLMUYQL ZKUJQ YOQUCX	GLYMTIYVQLVZ OCXJUVDZ QGYQ QGL UXQLEEUHLXOL VLBCVQ UZ YOOIVYQL YXM VLTIUVLZ UDDLMUYQL ZKUJQ YOQUCX	HEADQUARTERS CONFIRMS THAT THE INTELLIGENCE REPORT IS ACCURATE AND REQUIRES IMMEDIATE SWIFT ACTION	kama_sutra	kama_sutra	substitution	{ "type": "keyword", "value": "SANSKRIT" }	intermediate	en	86	98	cipher_museum	2.0	public	null	null
confederate-vigenere-v3-0015	FHRUPIYXFVSIAU	FHRUPIYXFVSIAU	THE SIEGE BEGINS	confederate_vigenere	confederate_vigenere	polyalphabetic	{ "type": "keyword", "value": "MANCHESTER" }	intermediate	en	14	14	cipher_museum	2.0	public	null	null
monoalphabetic-v2-1445	WM OATEE PBHAQ JG QAM RMTIAMO TGU WM OATEE PBHAQ JG QAM ETGUBGH HNJSGUO TGU BG QAM PBMEUO	WM OATEE PBHAQ JG QAM RMTIAMO TGU WM OATEE PBHAQ JG QAM ETGUBGH HNJSGUO TGU BG QAM PBMEUO	WE SHALL FIGHT ON THE BEACHES AND WE SHALL FIGHT ON THE LANDING GROUNDS AND IN THE FIELDS	monoalphabetic	monoalphabetic	substitution	{ "type": "keyword", "value": "TRIUMPH" }	beginner	en	72	89	cipher_museum	2.0	public	null	null
affine-v3-0398	CFF ZWJOUPO HUJP UJ PCTYJCFQXWR QP TLW YPQTWR OTCTWO CJW MQTQXWPO OYHVWMT TU WEYCF ZJUTWMTQUP	CFF ZWJOUPO HUJP UJ PCTYJCFQXWR QP TLW YPQTWR OTCTWO CJW MQTQXWPO OYHVWMT TU WEYCF ZJUTWMTQUP	ALL PERSONS BORN OR NATURALIZED IN THE UNITED STATES ARE CITIZENS SUBJECT TO EQUAL PROTECTION	affine	affine	substitution	{ "a": 5, "b": 2 }	beginner	en	79	93	cipher_museum	2.0	public	null	null
alberti-disk-v3-0447	YNMYAROKHRCDGHDDQZIAK	YNMYAROKHRCDGHDDQZIAK	SONS OF LIBERTY ASSEMBLE	alberti_disk	alberti_disk	disk	{ "type": "integer", "value": 11 }	expert	en	21	21	cipher_museum	2.0	public	null	null
culper-ring-052	104 100 998 801 804 806 808 813 813 808 813 806 999 998 822 800 818 999 100 998 822 814 817 803 999 102 100 998 822 814 817 803 999 998 822 800 818 999 110 998 806 814 803 999 102 998 805 820 811 811 999 101 998 806 817 800 802 804 999	104 100 998 801 804 806 808 813 813 808 813 806 999 998 822 800 818 999 100 998 822 814 817 803 999 102 100 998 822 814 817 803 999 998 822 800 818 999 110 998 806 814 803 999 102 998 805 820 811 811 999 101 998 806 817 800 802 804 999	IN THE BEGINNING WAS THE WORD AND THE WORD WAS WITH GOD AND FULL OF GRACE	culper_ring	culper_ring	codebook	{ "type": "none", "value": null }	expert	en	177	235	cipher_museum	0.2	public	null	null
culper-ring-v3-0026	998 819 817 804 800 818 820 817 804 999 998 801 820 817 808 804 803 999 998 807 804 817 804 999	998 819 817 804 800 818 820 817 804 999 998 801 820 817 808 804 803 999 998 807 804 817 804 999	TREASURE BURIED HERE	culper_ring	culper_ring	codebook	{ "type": "none", "value": null }	expert	en	72	95	cipher_museum	2.0	public	null	null
atbash-v3-0091	AVIL PMLDOVWTV KILLUH ZOOLD LMV KZIGB GL KILEV PMLDOVWTV DRGSLFG IVEVZORMT GSV PMLDOVWTV RGHVOU	AVIL PMLDOVWTV KILLUH ZOOLD LMV KZIGB GL KILEV PMLDOVWTV DRGSLFG IVEVZORMT GSV PMLDOVWTV RGHVOU	ZERO KNOWLEDGE PROOFS ALLOW ONE PARTY TO PROVE KNOWLEDGE WITHOUT REVEALING THE KNOWLEDGE ITSELF	atbash	atbash	substitution	{ "type": "none", "value": null }	beginner	en	82	95	cipher_museum	2.0	public	null	null

End of preview. Expand in Data Studio

Classical Cipher Corpus

A labeled educational dataset of classical cipher examples for teaching cryptanalysis and training small cipher-family classifiers.

Part of the Cipher Detective AI project:

🕵️ Space: systemslibrarian/cipher-detective-ai
📦 Dataset: systemslibrarian/classical-cipher-corpus (this repo)
🤖 Model: systemslibrarian/cipher-detective-classifier

Intended use

Teach classical cryptanalysis.
Benchmark educational cipher-family detectors.
Train small text classifiers for Hugging Face Spaces.
Demonstrate why historical ciphers are not modern security.

Not intended for

Unauthorized access.
Surveillance.
Breaking modern encryption.
Password recovery.
Bypassing security controls.
Real-world cryptographic security claims.

Schema

Each line of cipher_examples.jsonl is one record:

{
  "id": "cda-0000042",
  "text": "WKLV LV D FODVVLFDO FDHVDU FLSKHU GHPR",
  "ciphertext": "WKLV LV D FODVVLFDO FDHVDU FLSKHU GHPR",
  "plaintext": "THIS IS A CLASSICAL CAESAR CIPHER DEMO",
  "label": "caesar_rot",
  "cipher": "caesar_rot",
  "key": {"shift": 3},
  "difficulty": "medium",
  "language": "en",
  "text_length": 38,
  "length": 38,
  "attack_methods": ["brute_force_26", "frequency_analysis", "chi_squared_english"],
  "educational_note": "Caesar / ROT-N is a single-shift monoalphabetic cipher with only 26 keys.",
  "source": "synthetic_educational"
}

text and ciphertext are kept as aliases for compatibility. text_length and length likewise.

Labels

plaintext
caesar_rot
atbash
vigenere
rail_fence
columnar
affine
substitution

Construction

The dataset is generated synthetically from educational English plaintext templates and classical cipher transforms. It is reproducible with:

python scripts/generate_dataset.py --out data/cipher_examples.jsonl --n 50000 --seed 42

Biases and limitations

Mostly English.
Synthetic text.
Limited cipher families.
Not representative of modern encryption.
Not a benchmark for real-world cryptanalytic capability.
Model performance on this dataset should be framed only as educational classification performance.

Responsible framing

This dataset exists to teach pattern leakage in classical ciphers. It should be used to make learners more skeptical of weak encryption claims and more respectful of modern, well-reviewed cryptography.