Video: Dab tsi yog cov ntaub ntawv kos npe lossis cov ntaub ntawv headers raws li siv hauv digital forensics?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2024-01-31 05:26
Cov ntaub ntawv Hom
A daim ntawv kos npe yog ib qho tshwj xeeb ntawm kev txheeb xyuas bytes sau rau a cov ntaub ntawv header . Hauv Windows system, a daim ntawv kos npe yog ib txwm muaj nyob rau hauv thawj 20 bytes ntawm lub ntaub ntawv . txawv ntaub ntawv hom muaj sib txawv cov ntaub ntawv kos npe ; Piv txwv li, ib daim duab Windows Bitmap ntaub ntawv (.
Ua li no, dab tsi yog daim ntawv kos npe thiab vim li cas nws tseem ceeb hauv computer forensics muab piv txwv ntawm cov ntawv kos npe?
A daim ntawv kos npe txhais tau tias yog cov ntaub ntawv uas siv los txheeb xyuas lossis nws pab txheeb xyuas cov ntsiab lus ntawm qhov muab ntaub ntawv . ntaub ntawv . Nws yog tseem ceeb hauv computer forensics raws li nws kuaj xyuas yog tias cov ntaub ntawv sib phim cov ntaub ntawv tiag tiag kom paub seb tus neeg ua haujlwm rau lub cybercrime uas pab daws qhov teeb meem ntawm no.
Tom qab ntawd, lo lus nug yog, cov ntaub ntawv headers yog dab tsi? Hauv ntaub ntawv tswj, a taub hau yog ib cheeb tsam thaum pib ntawm txhua ntaub ntawv qhov chaw khaws ntaub ntawv khaws cia. Cov ntaub ntawv header tej zaum yuav muaj hnub tim ntaub ntawv tau tsim, hnub uas nws tau kho tshiab kawg, thiab cov cov ntaub ntawv qhov loj. Cov taub hau tuaj yeem nkag tau tsuas yog los ntawm kev khiav haujlwm lossis los ntawm cov kev pabcuam tshwj xeeb.
Tom qab ntawd, ib tug kuj yuav nug, dab tsi yog tus lej khawv koob hauv cov ntaub ntawv?
Khawv koob Number Txhais. A khawv koob naj npawb yog a tus lej embedded ntawm los yog ze ntawm qhov pib ntawm a ntaub ntawv uas qhia nws ntaub ntawv format (ie, hom ntaub ntawv yog). Nws kuj yog qee zaum hu ua a ntaub ntawv kos npe. Khawv koob tooj feem ntau tsis pom rau cov neeg siv.
Dab tsi yog daim ntawv kos npe rau cov ntaub ntawv JPEG?
| Txuas ntxiv | Kos npe | Kev piav qhia |
|---|---|---|
| JPG | FF D8 FF E1 | Lub koob yees duab digital-j.webp" /> |
| JPE | FF D8 FF E0 | JPE IMAGE FILE - jpeg |
| JFIF | FF D8 FF E0 | JFIF IMAGE FILE - jpeg |
| JPG | FF D8 FF E0 | JPEG IMAGE |
Pom zoo:
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