Menene Katin Mifare 1K?

Katin Mifare Classic 1K an taƙaita shi azaman katin M1, wanda ba katin mitar rediyo ba{2}. Fasahar sadarwa da katin mitar rediyo ana kiranta kusa da fasahar sadarwar filin, ko NFC a takaice.

Katin M1 ya kasu kashi 16, kowane bangare ya yi daidai da tubalan 4 (block 0-block 3), jimlar 64 blocks, mai lamba 0-63. Ana amfani da toshe na 0 na sashe na 0 don adana lambar ƙirar ƙira, wanda aka ƙarfafa Ba za a iya canza shi ba. Ana amfani da blocks 0-2 na sauran wuraren da suka rage don adana bayanai, kuma block 3 shine tsarin sarrafa kalmar sirri da ake amfani da shi don adana kalmar sirri A, ikon shiga, da kalmar wucewa ta B. Tsarin shine kamar haka:

A0 A1 A2 A3 A4 A5 FF 07 80 69 B0 B1 B2 B3 B4 B5

(Password A 6 bytes) (Ma'ajiyar ajiya 4 bytes) (Password B 6 bytes)

Haka kuma, kalmar sirri da sarrafa ma'ajiya a kowane sashe na 3 duk masu zaman kansu ne, kuma ana sarrafa nau'ikan ayyuka daban-daban na sashin. Kowane sashe na iya gane ayyuka daban-daban, don haka ana amfani da shi sosai azaman kati.

Kowane toshe a cikin katin ya ƙunshi bytes 16, don haka ƙarfin katin M1=16 sassa * 4 tubalan * 16 bytes=1024 bytes=1k (asalin katin M1).

Kashi na farko na sashin farko na katin yana adana UID na musamman na duniya. Wasu suna da ragowar ingancin UID da bayanan masana'anta. Don katunan da aka samar bisa ga ƙayyadaddun bayanai, za a rubuta wannan ɓangaren{2} ana kiyaye shi a masana'anta kuma ana iya karantawa kawai kuma ba za a iya karantawa ba. Rubuta. Tabbas, akwai kuma katin UID na musamman, ana iya gyara UID.

Katin Mifare 1K ana amfani dashi sosai don sarrafa damar al'umma, sarrafa ma'aikata, katin shaida, katin alamar wayar hannu.