使用 ACR122U NFC 阅读器的 Mifare 1K NFC 标签认证失败 [英] Authentication failure for Mifare 1K NFC tag using ACR122U NFC reader

问题描述

我在使用ACR122U工具对Mifare 1K NFC标签进行身份验证时总是出现失败的结果，但我可以使用Android手机读取/写入该标签.

I always get the failure result when using ACR122U tool to authenticate Mifare 1K NFC tag, but I can use Android phone to read/write this tag.

ACR122U Load Authentication Keys
< FF 82 00 00 06 FF FF FF FF FF FF 
> 90 00 
< Key Structure: 00    < Key Number: 00
< Key: FF FF FF FF FF FF
Load Authentication Keys Success

ACR122U Authentication
< FF 86 00 00 05 01 00 00 60 00 
> 63 00 
Operation failed

推荐答案

您对 Android 手机能够读写此标签的评论表明它被格式化为包含 NDEF 数据.您可以尝试将 MIFARE 应用程序目录密钥 0xA0A1A2A3A4A5 用于第一个扇区(块 0-3)，并将 NFC 论坛密钥 0xD3F7D3F7D3F7 用于以下扇区，而不是出厂默认密钥 0xFFFFFFFFFFFF.有关详细信息，请参阅NFC 类型 MIFARE 经典标签操作.

Your remark about an Android phone being able to read and write this tag suggests it is formatted to contain NDEF data. Instead of the factory default key 0xFFFFFFFFFFFF, you could try to use the MIFARE Application Directory key 0xA0A1A2A3A4A5 for the first sector (blocks 0-3) and the NFC Forum key 0xD3F7D3F7D3F7 for the following sectors. See NFC Type MIFARE Classic Tag Operation for more details.

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