区分Mifare Ultralight与Mifare Ultralight C

有没有可靠的方法来确定RFID卡是Mifare Ultralight还是Mifare Ultralight C？区分Mifare Ultralight与Mifare Ultralight C

到目前为止，我发现的唯一方法是利用这两张卡的大小差异来发出一个读取命令超出较小的边界。但它看起来像一个黑客，我假设如果卡使用Ultralight C身份验证机制读取命令可能会失败。

const char* mifare_ultralight_identification(const nfc_target_info_t nti) 
{ 
    byte_t abtCmd[2]; 
    byte_t abtRx[265]; 
    size_t szRxLen; 

    abtCmd[0] = 0x30; // MIFARE Ultralight READ command 
    abtCmd[1] = 0x10; // block address (1K=0x00..0x39, 4K=0x00..0xff) 

    if (!nfc_initiator_transceive_dep_bytes(pnd,abtCmd,2,abtRx,&szRxLen)) { 
    // READ command of 0x10 failed, we consider that Ultralight does have 0x10 address, so it's a "simple" Ultralight (i.e. not a Ultralight C) 
    // When a READ failed, the tag returns in HALT state, so we need to reselect tag 
    nfc_initiator_select_passive_target(pnd, NM_ISO14443A_106, nti.nai.abtUid, nti.nai.szUidLen, NULL); 
    return ""; 
    } 
    return " C"; 
}

Source

来源

2012-08-10 mibollma