https://w.electrodragon.com/w/index.php?action=history&feed=atom&title=Mifare 2026-06-05T03:25:05Z Revision history for this page on the wiki MediaWiki 1.37.2 https://w.electrodragon.com/w/index.php?title=Mifare&diff=29560&oldid=prev 2021-02-05T09:23:23Z

<p></p> <p><b>New page</b></p><div><br /> * The memory area of the MIFARE 1k is organized in 16 numbered sectors from 0 to 15.<br /> * Each sector contains 4 blocks (block 0 to 3). <br /> * Block 3 of each sector is called sector trailer and contains information (called access bits) to handle the sector access conditions and the secret keys (key A and key B). Depending on the setting of the access bits the<br /> * Reader device has to perform an authentication with key A or key B to read or write the sector.<br /> * Block 0 of sector 0 (i.e. Manufacturer Block also called Manufacturer Data) contains the IC manufacturer data, and the Unique Identifier (UID, also called Serial Number, see [ISOIEC 14443-3] for a detailed definition).<br /> &lt;gallery&gt;<br /> File:Mifare-classic-1k.png|Mifare-classic-1K data structure<br /> File:Mifare-classic-1k-data-1.png | Mifare-classic-1K data structure 02<br /> File:Mifare-classic-1k-data-2.jpg | Mifare-classic-1K data structure 03<br /> File:Mifare-classic-1k-data-3.png | Mifare-classic-1K data structure 04<br /> &lt;/gallery&gt;<br /> * 卡片的第一扇区第一段，储存了一个全球唯一的UID，其他还有UID效验位和厂商信息，按规范生产的卡片，该段在出厂时会被写入保护，只能读取不能写入。当然另外还有一种特殊的UID卡，UID能被修改。<br /> == Reference ==<br /> * https://www.nxp.com/docs/en/application-note/AN1304.pdf<br /> * https://www.billie.cc/blog/Fully-encrypted-Mifare-1-card-cracked.html<br /> [[category: MFRC522]]</div>

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