MIFARE classic 1k MFRC522python库

Question

我正在学习如何使用MFRC522模块和覆盆子pi。 Im使用mfrc522python库。在

在尝试更改密钥之前，我能够从mifare 1k读写数据。 我试着换7区。 是这样的：

[0, 0, 0, 0, 0, 0, 255, 7, 128, 105, 255, 255, 255, 255, 255, 255]

在这样的变化之后：

^{pr2}$

修改后，我可以用A键读取0-3扇区：

255, 255, 255, 255, 255, 255

以及键B的扇区7：

250,250,250,250,250,250

尝试恢复初始设置时，我犯了个错误，将扇区7更改为：

[255, 255, 255,255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255]

现在我只能读UID。 我知道6-7-8块包含权限，但我找不到关于这个主题的好文档。 如何重置初始设置？在

我尝试使用以下代码：

# Welcome message
print "Welcome to the MFRC522 data read example"
print "Press Ctrl-C to stop."

# This loop keeps checking for chips. If one is near it will get the UID  and authenticate
while continue_reading:

# Scan for cards    
(status,TagType) = MIFAREReader.MFRC522_Request(MIFAREReader.PICC_REQIDL)

# If a card is found
if status == MIFAREReader.MI_OK:
    print "Card detected"

# Get the UID of the card
(status,uid) = MIFAREReader.MFRC522_Anticoll()

# If we have the UID, continue
if status == MIFAREReader.MI_OK:

    # Print UID
    print "Card read UID: "+str(uid[0])+","+str(uid[1])+","+str(uid[2])+","+str(uid[3])

    # This is the default key for authentication
    key = [0xFF,0xFF,0xFF,0xFF,0xFF,0xFF]
    setas = [0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0x07,0x80,0x69,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF]
    sect = 7
    # Select the scanned tag
    MIFAREReader.MFRC522_SelectTag(uid)

    # Authenticate
    status = MIFAREReader.MFRC522_Auth(MIFAREReader.PICC_AUTHENT1A, sect, key, uid)

    # Check if authenticated
    if status == MIFAREReader.MI_OK:
        MIFAREReader.MFRC522_Read(sect)

        MIFAREReader.MFRC522_Write(sect,setas)

        MIFAREReader.MFRC522_Read(sect)
        MIFAREReader.MFRC522_StopCrypto1()
    else:
        print "Authentication error"

Answer 1

good doc about Mifare classic 1k 在这里你可以学习如何设置访问位。在

我完全封锁了整个区域的所有通道。在

注意：

To further complicate things, there are also 3 “negated” bits per block that are stored as the opposite value of the “normal” bits. So, if
C10 is 1, then C10 must be 0. The tag will check to ensure these negated values all check out, and if they don’t then the tag will assume
the tag’s memory is corrupt or there has been some sort of tampering attempt and completely block all access to the entire sector. It is
essential that the access bits are properly written to the tag or sectors with invalid sector trailers will be unreadable.

可以在下面的文档中找到其他的水果： learn Adafruit