Mifare 1K Card yog dab tsi?

Mifare Classic 1K daim npav yog luv li M1 daim npav, uas yog daim npav xov tooj cua tsis sib cuag. Cov thev naus laus zis rau kev sib txuas lus nrog daim npav xov tooj cua yog hu ua ze ze ntawm kev sib txuas lus thev naus laus zis, lossis NFC luv luv.

Daim npav M1 tau muab faib ua 16 ntu, txhua ntu sib raug rau 4 blocks (block 0-block 3), tag nrho ntawm 64 blocks, suav 0-63. Lub 0th block ntawm 0th sector yog siv los khaws cov chaw tsim khoom, uas tau ua tiav tsis tuaj yeem hloov pauv. Blocks 0-2 ntawm thaj chaw seem yog siv los khaws cov ntaub ntawv, thiab thaiv 3 yog cov tswj thaiv siv los khaws lo lus zais A, tswj kev nkag mus, thiab lo lus zais B. Cov qauv yog raws li hauv qab no:

A{{0}} A1 A2 A3 A4 A5 FF 07 80 69 B0 B1 B2 B3 B4 B5

(Password A 6 bytes) (Storage control 4 bytes) (Password B 6 bytes)

Tsis tas li ntawd, tus password thiab kev tswj hwm cia hauv txhua ntu ntu 3 yog txhua tus neeg ywj pheej, thiab ntau yam kev ua haujlwm ntawm cov haujlwm yog tswj hwm tus kheej. Txhua txoj haujlwm tuaj yeem paub txog cov haujlwm sib txawv, yog li nws tau siv dav los ua daim npav.

Txhua qhov thaiv hauv daim npav muaj 16 bytes, yog li lub peev xwm ntawm M1 daim npav=16 sectors * 4 blocks * 16 bytes=1024 bytes=1k (lub hauv paus ntawm daim npav M1).

Thawj ntu ntawm thawj ntu ntawm daim npav khw muag khoom thoob ntiaj teb tshwj xeeb UID. Lwm tus muaj UID cov khoom siv thiab cov ntaub ntawv tsim khoom. Rau cov ntawv ua raws li cov lus qhia tshwj xeeb, ntu no yuav raug sau-tiv thaiv ntawm lub Hoobkas thiab tsuas yog nyeem tau thiab nyeem tsis tau. Sau. Tau kawg, kuj tseem muaj daim npav UID tshwj xeeb, UID tuaj yeem hloov kho.

Mifare 1K Card yog dav siv rau hauv zej zog kev tswj hwm, tswj cov neeg ua haujlwm, daim npav qhia tus kheej, daim npav xov tooj ntawm tes.