Cov lej yog ib txoj hauv kev hloov cov lus yog li lub ntsiab lus qub tau muab zais. Feem ntau, qhov no xav tau phau ntawv lossis lo lus. Ciphers yog cov txheej txheem uas tau thov rau cov lus kom zais lossis zais cov ntaub ntawv. Cov txheej txheem no tau thim rov qab los txhais lossis txiav txim siab cov lus. Codes thiab ciphers tsim ib feem tseem ceeb ntawm kev tshawb fawb txog kev sib txuas lus ruaj ntseg (cryptanalysis).
Qauv Cuam Tshuam
Qauv Acrostic Code Paragraph
Qauv Acrostic Code Paragraph
Qauv Npua Nqe Lus
Qauv Nth Tsab Ntawv Code Kab Lus
Cov kauj ruam
Txoj Kev 1 ntawm 5: Siv Yooj Yim Ciphers thiab Cov Cai (Menyuam Yaus)
Kauj Ruam 1. Sau cov lus rov qab
Nov yog ib txoj hauv kev yooj yim ntawm kev nkag siab cov lus yog li lawv tsis tuaj yeem nkag siab ib nrais muag. Cov lus zoo li "Ntsib kuv sab nraum" sau rov qab yuav yog "Teem em edistuo."
Nco tseg:
Txawm hais tias txoj cai no tuaj yeem daws tau yooj yim, tab sis nws tuaj yeem muaj txiaj ntsig yog tias koj xav tias ib tus neeg tab tom sim saib ntawm koj cov lus.
Kauj Ruam 2. Rov qab cov tsiaj ntawv hauv ib nrab kom nkag siab cov lus
Sau cov tsiaj ntawv A txog M hauv kab ib ntawm daim ntawv. Ncaj nraim hauv qab kab no, sau cov tsiaj ntawv N txog Z kuj hauv ib kab nkaus xwb. Hloov txhua tsab ntawv ntawm cov lus mus rau tsab ntawv tsis sib xws ntawm ob kab ntawv uas koj tau sau tawm.
Los ntawm kev siv cov tsiaj ntawv rov ua dua, cov lus "Nyob Zoo" yuav hloov los ua "Uryyb."
Kauj Ruam 3. Sim pigpen cipher
Kos daim kab xev ntiv taw tic tac ntawm ib daim ntawv. Sau cov tsiaj ntawv A txog kuv hauv kab sib chaws mus ntawm sab laug mus rau sab xis, saum toj mus rau hauv qab. Hauv qhov piv txwv no:
- Thawj kab yog tsim los ntawm cov tsiaj ntawv A, B, C.
- Qhov thib ob yog ua los ntawm D, E, F.
- Kab kawg yog ua los ntawm G, H, I.
Kauj Ruam 4. Tsim qhov thib ob tic tac ntiv taw ntiv taw nrog dots
Kos lwm tic tac ntiv taw ntiv tes sib nrug ntawm thawj qhov. Sau daim phiaj nrog cov tsiaj ntawv J txog R, zoo ib yam rau thawj daim phiaj. Tom qab ntawd kos cov cim nyob hauv txhua qhov chaw ntawm kab sib chaws ntawm txhua kab raws li tau piav qhia:
- Hauv thawj kab, pib ntawm sab laug, tso tus cim nyob rau hauv kaum sab xis (tsab ntawv I), nyob rau hauv qab nruab nrab sab (tsab ntawv K), thiab hauv qab kaum sab laug (tsab ntawv L).
- Hauv kab thib ob, pib ntawm sab laug, tso tus cim rau ntawm sab xis sab xis (tsab ntawv M), hauv qab nruab nrab sab (tsab ntawv N), thiab nyob rau sab laug sab laug (tsab ntawv O).
- Hauv kab thib ob, pib ntawm sab laug, tso tus cim nyob rau ntawm kaum sab xis saum toj (tsab ntawv P), nyob rau sab nruab nrab sab saum toj (tsab ntawv Q), thiab nyob rau sab laug sab saud (tsab ntawv R).
Kauj Ruam 5. Sau ob daim duab X hauv qab txhua kab sib chaws
Ob daim duab X no tseem yuav sau nrog cov tsiaj ntawv kom ua tiav koj tus lej pigpen cipher. Hauv X thib ob, tso cov cim nyob hauv qhov chaw qhib ib puag ncig qhov twg X hla yog li muaj tus lej ntawm txhua sab ntawm qhov nruab nrab ntawm X. Tom qab ntawd:
- Hauv thawj (tsis pom) X duab, sau S rau saum X, T ntawm sab laug, U ntawm sab xis, thiab V rau hauv qab.
- Hauv X duab thib ob, sau W rau saum X, X ntawm sab laug, Y ntawm sab xis, thiab Z rau hauv qab.
Kauj Ruam 6. Siv daim phiaj ib puag ncig cov tsiaj ntawv los sau rau hauv pigpen cipher
Daim phiaj duab (suav nrog cov cim) cov ntawv ib puag ncig raug siv los hloov pauv rau cov ntawv lawv tus kheej. Siv koj tus lej pigpen cipher los txhais cov lus rau hauv thiab tawm ntawm pigpen.
Kauj Ruam 7. Siv daim ntawv hloov pauv hnub tim
Xaiv hnub tim. Qhov no yuav yog qee yam tseem ceeb ntawm tus kheej, xws li hnub yug lossis hnub koj kawm tiav qib siab, tab sis nws tuaj yeem yog qee yam tsis yog tus kheej, zoo li hnub yug George Washington. Sau hnub tim raws li txoj hlua tsis tu ncua ntawm cov lej. Nov yog tus lej naj npawb.
- Piv txwv li, yog tias koj yuav siv George Washington lub hnub yug (2/22/1732), koj yuav sau nws li 2221732.
- Yog tias koj twb tau pom zoo siv hnub hloov pauv tus lej nrog ib tus neeg, koj tuaj yeem nrog cov lus sib txuas nrog cov lus qhia (zoo li "Washington") rau tus lej tus lej.
Kauj Ruam 8. Nkag mus rau koj cov lus nrog hnub hloov pauv tus lej
Sau koj cov lus ntawm ib daim ntawv. Hauv qab cov lus, sau ib tus lej ntawm tus lej tus lej rau txhua tsab ntawv ntawm koj cov lus. Thaum koj mus txog tus lej kawg ntawm tus lej tus lej, rov ua tus yuam sij thaum pib. Piv txwv, siv George Washington lub hnub yug (2/22/1732):
- Message: Kuv tshaib plab
-
Enciphering:
I.m.h.u.n.gr.y
2.2.2.1.7.3.2.2
Hloov cov tsiaj ntawv raws tus lej tus lej, zoo li hauv…
- Coded message: K. O. J. V. U. J. T. A
Kauj Ruam 9. Siv lus tsis pub lwm tus paub, zoo li npua Latin
Hauv Npua Latin, cov lus uas pib nrog lub suab sib txuas hloov lub suab mus rau qhov kawg ntawm lo lus thiab ntxiv "ay." Qhov no yog qhov tseeb rau cov lus pib nrog pawg ntawm cov ntawv sib txuas. Cov lus uas pib nrog vowels tsuas yog tau txais "txoj kev" lossis "ay" ntxiv rau qhov kawg ntawm lo lus.
- Thawj qhov piv txwv piv txwv: npua = igpay; kuv = emay; ib yam = ootay; ntub = etway; nyob zoo = nyob zoo
- Consonant pawg ua piv txwv thawj zaug: hnab looj tes = ua rau pom ntau; tsho = irtshay; nyob zoo = eerschay
- Vowel thawj qhov piv txwv: piav qhia = piav qhia; qe = eggway; xaus = xaus hnub; eat = noj
Txoj Kev 2 ntawm 5: Xauv Cov Cai
Kauj Ruam 1. Paub txog cov kev txwv ntawm cov lej
Cov lej phau ntawv tuaj yeem raug nyiag, ploj, lossis puas tsuaj. Cov txheej txheem cryptoanlaytic niaj hnub no thiab kev tshuaj xyuas lub computer tuaj yeem qee zaum ua txhaum txawm tias cov lej muaj zog. Txawm li ntawd los, cov lej tuaj yeem cuam tshuam cov lus ntev rau hauv ib lo lus cim, ua rau lawv txuag sijhawm zoo.
- Cov lis dej num pab raws li kev qhia paub tus qauv zoo. Qhov txuj ci no tuaj yeem siv rau thaum sau, txiav txim siab, nkag mus, lossis txiav txim siab cov lus.
- Cov lej yog ib txwm siv ntawm cov phooj ywg zoo. Cov lus tso dag sab hauv tuaj yeem xav tias yog hom "chaws." Sim txhim kho koj cov cai lus nrog koj cov phooj ywg zoo tshaj.
Kauj Ruam 2. Txiav txim siab lub hom phiaj ntawm koj cov cai
Paub lub hom phiaj ntawm koj cov cai yuav tiv thaiv kev ua haujlwm tsis tseem ceeb. Yog tias koj lub hom phiaj yog kom txuag sijhawm, koj tsuas xav tau ob peb lo lus tshwj xeeb. Yog tias koj tab tom sim nkag siab cov lus ntxaws, koj yuav xav tsim phau ntawv code uas zoo li phau ntawv txhais lus.
- Xaiv cov kab lus uas tshwm sim hauv cov lus koj xav kom nkag siab. Cov no yog cov hom phiaj tseem ceeb kom tau muab tso rau hauv kab lus.
- Cov lej tuaj yeem nyuaj ntxiv los ntawm kev siv ntau tus lej sib txawv hauv kev sib hloov lossis ua ke. Txawm li cas los xij, siv ntau cov lej, ntau phau ntawv tsim nyog rau kev txiav txim siab.
Kauj Ruam 3. Tsim koj phau ntawv chaws
Siv cov kab lus sib xws, xws li "Nyeem koj nrov nrov thiab meej," rau qee yam xws li "Roy." Rau txhua lo lus uas tuaj yeem nkag siab hauv koj cov lus sib tham thiab cov kab lus ib yam ib yam nkaus, xaiv lwm txoj cai cov lus.
-
Qee zaum, cov lej ib nrab tuaj yeem ua rau tsis pom cov lus txaus. Piv txwv li, yog tias "taug kev" txhais tau tias "tango" thiab "tsev khaws puav pheej" txhais tau tias "tsev noj mov" thiab yav dhau los siv lo lus "Roy" tuav nws tus nqi,
- Lus Qhia: Txog nag hmo. Kuv xav hais, Roy. Kuv mam li tango mus rau lub tsev noj mov raws li tau npaj tseg. Tshaj thiab tawm.
- Lub ntsiab lus: Txog nag hmo. Kuv xav hais, nyeem koj nrov nrov thiab meej. Kuv mam taug kev mus rau lub tsev khaws puav pheej raws li tau npaj tseg. Tshaj thiab tawm.
Kauj Ruam 4. Siv koj phau ntawv chaws rau cov lus
Siv cov lus cim hauv koj phau ntawv teev npe kom nkag siab cov lus. Koj tuaj yeem pom tias koj tuaj yeem txuag koj tus kheej lub sijhawm los ntawm kev tso npe (zoo li lub npe thiab lub npe zoo li kuv, kuv, nws) raws li cov ntawv yooj yim. Txawm li cas los xij, qhov kev txiav txim siab no nyob ntawm koj qhov xwm txheej.
Cov lej ob-ntu siv ob phau ntawv sib txawv los nkag lossis txiav txim siab cov lus. Cov no muaj zog dua li cov lej ib feem
Kauj Ruam 5. Siv tus yuam sij los sau koj cov lus, hloov pauv
Cov lus tseem ceeb, pab pawg ntawm cov lus, ntawv, cim, lossis ua ke ntawm cov no tuaj yeem siv los ua cov ntaub ntawv. Tus neeg txais koj cov lus tseem yuav xav tau cov kab lus tseem ceeb no lossis tus lej ntawm cov ntawv/cim los txiav txim siab cov lus.
-
Piv txwv, nrog lo lus tseem ceeb "SECRET," txhua tsab ntawv ntawm koj cov lus yuav hloov mus rau tus lej ntawm nws thiab tsab ntawv sib xws ntawm lo lus tseem ceeb. Raws li hauv,
- Message: Nyob zoo
-
Kev nkag siab:
/ H/ yog
Kauj ruam 11. cov ntawv nyob deb ntawm tus yuam sij /S /
/ e/ yog tib yam (xoom) raws li tus yuam sij /E /
/ l/ ib
Kauj ruam 9. cov ntawv nyob deb ntawm tus yuam sij /C /
Thiab ntxiv rau …
- Cov Lus Cim: 11; 0; 9; 6; 10
Kauj Ruam 6. Txiav cov lus
Thaum koj tau txais cov lus coded, koj yuav tsum tau siv koj li ntawv phau ntawv lossis cov lus tseem ceeb/kab lus kom nkag siab zoo ntawm lawv. Qhov no yuav nyuaj thaum xub thawj, tab sis yuav dhau los ua neeg nkag siab zoo thaum koj paub ntau dua nrog cov cai.
Tswv yim:
Txhawm rau ntxiv dag zog rau koj lub peev xwm, koj yuav xav caw koj cov phooj ywg los koom nrog cov pab pawg ua txuj ci ua pawg. Dhau lus los txhim kho koj cov txuj ci.
Txoj Kev 3 ntawm 5: Kawm Codes Li Cas
Kauj Ruam 1. Ua tus lej siv los ntawm Mary, Poj huab tais ntawm Scots
Thaum sim xa xov thaum lub sijhawm muaj teeb meem kev nom kev tswv, Mary, Poj huab tais ntawm Scots, siv cov cim ua tus lej hloov pauv rau cov ntawv Askiv thiab cov lus sib xws. Qee qhov tshwj xeeb ntawm Mary tus lej koj yuav pom muaj txiaj ntsig rau koj tus kheej kev kawm crypto suav nrog:
- Kev siv cov duab yooj yooj yim rau cov tsiaj ntawv siab, zoo li Mary siv lub voj voog rau tsab ntawv /A /. Qhov no txuag lub sijhawm thaum teev.
- Cov cim uas nquag siv los ua ib feem ntawm cov lus tshiab, zoo li Mary siv "8" ua tus lej rau tsab ntawv "Y." Cov no tuaj yeem cuam tshuam cov lej tawg uas yuav txhais qhov no ua tus lej thiab tsis yog lub cim cim.
- Cov cim tshwj xeeb rau cov lus ib txwm muaj. Hauv Mary hnub, "thov" thiab "tus nqa" tau txais cov cim tshwj xeeb, tab sis cov no tau tshwm sim ntau dua li niaj hnub no. Tseem, siv cov cim rau cov lus nquag thiab kab lus txuag lub sijhawm thiab ntxiv qhov nyuaj.
Kauj Ruam 2. Siv cov kab lus zoo ib yam li kev ceeb toom rau tub rog
Cov kab lus kab lus tuaj yeem cuam tshuam ntau lub ntsiab lus rau hauv kab lus. Txawm tias ntau yam kev ceeb toom tub rog, zoo li DEFCON system, tsuas yog paub cov lej yooj yim rau lub xeev kev npaj tiv thaiv. Tuaj nrog cov lus tsim nyog/kab lus hauv koj lub neej txhua hnub.
- Piv txwv li, tsis txhob hais tias "Kuv yuav tsum tau khiav mus rau kuv lub tub rau khoom" ntawm koj cov phooj ywg, koj yuav siv lo lus "Sloppy."
- Txhawm rau qhia rau koj cov phooj ywg paub tias tus neeg koj xav kom hnub tau nkag mus hauv chav, koj tuaj yeem hais cov kab lus hais tias, "Kuv tus npawg Bruce nyiam hockey, ib yam."
Kauj Ruam 3. Nkag siab cov lus nrog phau ntawv tus lej tseem ceeb
Cov phau ntawv yog qhov yooj yim los ntawm. Yog tias phau ntawv tau txiav txim siab raws li tus yuam sij rau tus lej, thaum koj tau txais cov lus koj tuaj yeem mus rau lub khw muag ntawv lossis lub tsev qiv ntawv kom saib tus yuam sij los txiav txim siab nws.
-
Piv txwv li, koj yuav txiav txim siab siv Frank Herbert's Dune, nrog cov lej lej sawv cev rau nplooj ntawv, kab, thiab tus lej lej pib ntawm sab laug.
- Cov lus zais: 224.10.1; 187.15.1; 163.1.7; 309.4.4
- Decoded Message: Kuv zais kuv cov lus.
Tswv yim:
Cov ntawv sib txawv ntawm cov ntawv yuav siv cov nplooj ntawv sib txawv. Txhawm rau kom ntseeg tau tias phau ntawv raug raug siv los ua tus yuam sij, suav nrog cov ntaub ntawv tshaj tawm, xws li luam tawm, xyoo luam tawm, thiab ntxiv nrog koj phau ntawv tseem ceeb.
Txoj Kev 4 ntawm 5: Txiav Txim Ciphers
Kauj Ruam 1. Txheeb xyuas qhov tsim nyog ntawm kev siv tus cipher
Tus cipher siv cov txheej txheem, uas zoo li txheej txheem lossis hloov pauv uas tau thov rau cov lus tsis tu ncua. Qhov no txhais tau tias txhua tus neeg uas paub tus cipher tuaj yeem txhais nws.
- Cov ciphers nyuaj tuaj yeem cuam tshuam txawm tias tau kawm cryptanalysts. Qee zaum kev ua lej tom qab cov lus zais sib txawv tuaj yeem ua pov thawj qhov kev tiv thaiv zoo rau zais cov lus niaj hnub.
- Ntau tus kws tshaj xov xwm ntxiv tus yuam sij, zoo li hnub tim, txhawm rau ntxiv dag zog rau tus lej nkag. Tus yuam sij no hloov kho qhov txiaj ntsig los ntawm tus lej sib xws ntawm hnub ntawm lub hlis (thawj zaug, txhua qhov txiaj ntsig yuav raug hloov los ntawm ib qho).
Kauj Ruam 2. Tsim kom muaj lub tswv yim los siv rau cov lus
Ib qho ntawm cov ciphers yooj yim tshaj plaws uas koj tuaj yeem thov yog ROT1 Cipher (qee zaum hu ua Caesar Cipher). Lub npe no yooj yim txhais tau tias koj yuav tsum tig ib tsab ntawv mus rau hauv tus niam ntawv rau txhua tsab ntawv ntawm koj cov lus.
- ROT1 Message: Nyob zoo
- ROT1 Enciphered: kuv; f; m; m; p
- Caesar Ciphers tuaj yeem hloov kho kom tig mus rau tom ntej ntawm tus lej sib txawv ntawm cov tsiaj ntawv. Hauv lub tswvyim, ROT1 thiab ROT13 yog qhov zoo ib yam.
- Ciphers tuaj yeem ua rau tsis txaus ntseeg. Qee qhov xav tau kev siv kev tswj hwm, sijhawm, thiab lwm yam txiaj ntsig ib yam. Qee cov txheej txheem cipher yuav xav tau kev siv computer.
Kauj Ruam 3. Nkaum cov lus
Siv koj lub algorithm los zais koj cov lus. Raws li koj kawm cov txheej txheem enciphering, koj qhov nrawm yuav tsum nce ntxiv. Ntxiv rau koj li algorithm kom nws nyuaj dua. Piv txwv li,
- Suav nrog qhov xwm txheej hloov pauv rau koj tus lej, zoo li hnub ntawm lub lim tiam. Rau txhua hnub ntawm lub lim tiam, muab tus nqi. Kho koj tus cipher los ntawm tus nqi no thaum encrypting cov lus ntawm hnub ntawd.
-
Suav nrog tus lej nplooj ntawv nrog koj cov lus nkag. Txhua tsab ntawv sib thooj ntawm nplooj ntawv ntawd yuav ua tus yuam sij rau cov lus, zoo li hauv,
- 1st Deciphered Message: 7; 2; 3; 6; 3
-
Phau Ntawv Ntsiab Lus: A_girl (qhov chaw tsis suav)
/ H/ yog
Kauj ruam 7. cov ntawv nyob deb ntawm /A /
/ e/ ib
Kauj ruam 2. cov ntawv nyob deb ntawm /g /
/ l/ ib
Kauj ruam 3. qhov chaw deb ntawm /i /
Thiab ntxiv rau …
- Cov Lus Tseem Ceeb Kho: Nyob Zoo
Kauj ruam 4. Decipher cov lus
Thaum koj dhau los ua kev nyeem koj tus lej nws yuav tsum dhau los ua qhov xwm txheej thib ob, lossis tsawg kawg yog yooj yim dua. Raws li daim ntawv thov ntawm cov txheej txheem no (cov txheej txheem) zoo ib yam, tus cwj pwm yuav pab koj pom cov kev hloov pauv thiab tau txais kev nkag siab thaum ua haujlwm nrog hom kab ke cryptographic no.
TIp:
Amateur cryptography clubs nrov nyob online. Ntau yam ntawm no yog pub dawb thiab muab cov hauv paus hauv paus ntawm ciphering niaj hnub no.
Txoj Kev 5 ntawm 5: Nyeem Cov Qauv Ciphers
Kauj Ruam 1. Master Morse Code
Tsis hais txog nws lub npe, Morse Code yog tus lej nkag. Dots thiab dashes sawv cev rau cov cim hluav taws xob ntev thiab luv luv uas, nyeg, sawv cev rau cov tsiaj ntawv ntawm cov tsiaj ntawv. Qhov no tau qhib kev sib txuas lus hluav taws xob qub (xov tooj). Cov tsiaj ntawv ib txwm hauv Morse, sawv cev ntev li (_) thiab luv (.) Cov cim, suav nrog:
- R; S; T; L:._ ua.; _..; _;._..
- A; E; Aw:._;.; _ _ _
Kauj Ruam 2. Siv kev hloov pauv tus ciphers
Ntau qhov zoo hauv keeb kwm, zoo li ntse heev Leonardo da Vinci, tau sau cov lus raws li lawv yuav saib zoo li nyob hauv daim iav. Vim li no, kev sau tus qauv no feem ntau hu ua "daim iav sau." Hom ciphers no tuaj yeem nyuaj thaum xub thawj, tab sis feem ntau dhau los ua qhov xwm txheej thib ob sai.
Nco tseg:
Kev hloov pauv tus lej feem ntau kho cov lus lossis tsim cov ntawv pom. Cov duab ntawm cov lus tau hloov pauv kom zais nws lub ntsiab lus.
Kauj Ruam 3. Hloov cov lus rau binary
Binary yog hom lus ntawm 1's thiab 0's siv los ntawm khoos phis tawj. Kev sib txuas ntawm cov no 1's thiab 0's tuaj yeem hloov pauv thiab tom qab ntawv txiav txim siab nrog tus lej binary, lossis los ntawm kev suav tus nqi sawv cev los ntawm 1's thiab 0's rau txhua tsab ntawv sib tham hauv xov.
Lub npe "Matt" yuav nkag mus rau binary li: 01001101; 01000001; 01010100; 01010100
Lub tswv yim
- Tsim txoj hauv kev los nkag qhov chaw nruab nrab ntawm cov lus nrog rau cov lus lawv tus kheej. Qhov no yuav ntxiv dag zog rau koj cov cai thiab ua rau nws nyuaj rau ua txhaum. Piv txwv li, koj tuaj yeem siv tsab ntawv (E, T, A, O, thiab N ua haujlwm zoo tshaj plaws) hloov chaw. Cov no hu ua nulls.
- Kawm ib tsab ntawv sib txawv, xws li Runic, thiab ua cov lej encryption/decryption rau cov uas koj xav muab cov lus rau. Koj tuaj yeem pom cov no hauv online, thiab lawv tau ua haujlwm zoo rau kuv.
- Yog tias koj xav kom koj cov cai muaj kev nyab xeeb ntau ntxiv, tsim cov cim ntxiv rau cov lus xaus thiab pib, zoo li '-ing' thiab 'th-'. Ib qho ntxiv, koj tuaj yeem tshem tawm lossis ntxiv rau cov lus hauv qab no ntawm ib tsab ntawv ('A' thiab 'I'.) Tsis txhob siv cov tsiaj ntawv loj, thiab rho tawm cov ntawv sau tseg. Ua qee cov tsiaj ntawv muaj cov cim zoo ib yam li lwm tus. Koj kuj tseem xav ua ke ob tsab ntawv nrog lo lus tom qab lawv, thiab tshem tawm tsab ntawv 'S' ntawm qhov kawg ntawm cov lus.
