CRC ua haujlwm li cas hauv kev sib tham?

2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17

Cyclic redundancy check ( CRC ) yog ib qho yuam kev-nrhiav code feem ntau siv hauv digital tes hauj lwm thiab cov cuab yeej khaws cia kom pom qhov hloov pauv tsis raug rau cov ntaub ntawv nyoos. Blocks ntawm cov ntaub ntawv nkag mus rau hauv cov tshuab no tau txais luv luv kos tus nqi txuas nrog, raws li qhov seem ntawm qhov kev faib ntau ntawm lawv cov ntsiab lus.

Dhau li ntawd, CRC yog dab tsi hauv kev sib tham nrog piv txwv?

CRC los yog Cyclic Redundancy Check yog ib txoj hauv kev tshawb nrhiav kev hloov pauv / yuam kev hauv kev sib txuas lus. CRC siv Generator Polynomial uas muaj nyob rau ntawm ob sab xa thiab txais. Ib piv txwv generator polynomial yog ntawm daim ntawv zoo li x³ + x + 1.

Tom qab ntawd, lo lus nug yog, qhov txawv ntawm CRC thiab checksum yog dab tsi? - CRC muaj ib tug complex xam raws li opposed to checksum . – Checksum feem ntau pom ib qho kev hloov pauv hauv cov ntaub ntawv thaum CRC tuaj yeem tshawb xyuas thiab txheeb xyuas qhov yuam kev ob tus lej. - CRC tuaj yeem txheeb xyuas qhov yuam kev ntau dua checksum vim nws txoj haujlwm ntau dua. - A CRC Feem ntau yog siv rau kev ntsuam xyuas cov ntaub ntawv hauv cov ntaub ntawv sib kis.

Ua raws li qhov xav tau, CRC siv qhov twg?

CRC yog hash muaj nuj nqi uas kuaj pom kev hloov pauv rau cov ntaub ntawv nyoos hauv computer feem ntau siv hauv digital telecommunications networks thiab cov khoom siv khaws cia xws li hard disk drives.

Vim li cas CRC hu ua cyclic?

CRCs tuaj yeem siv rau kev kho qhov yuam kev | kho qhov yuam kev, saib Mathematics of cyclic redundancy checks # bitfilters. CRCs yog li ntawd hu ua vim tias daim tshev (cov ntaub ntawv pov thawj) tus nqi yog redundancy (nws nthuav cov lus tsis ntxiv cov ntaub ntawv Entropy) thiab CRC algorithm yog nyob ntawm Cyclic cov lej codecyclic.