Contact-Less Smart Card Reader & Mifare ONE CARD Secondary Development Documentation
Author: Dennis Lan Date: 2003/12/17 Copyright © UNIVERSAL MASTER Information Co (SZ). Please explain the source
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7, the access control of the control block block 3 is different from the data block (blocks 0, 1, 2), and its access control is as follows:
Password A
Access control
Password B
C13
C23
C33
Reta
Write
Reta
Write
Reta
Write
0 0 0 NEVER
Keya | B
Keya | B
NEVER
Keya | B
Keya | B
0 1 0 NEVER
NEVER
Keya | B
NEVER
Keya | B
NEVER
1 0 0 NEVER
Keyb
Keya | B
NEVER
NEVER
Keyb
1 1 0 NEVER
NEVER
Keya | B
NEVER
NEVER
NEVER
0 0 1 NEVER
Keya | B
Keya | B
Keya | B
Keya | B
Keya | B
0 1 1 NEVER
Keyb
Keya | B
Keyb
NEVER
Keyb
1 0 1 NEVER
NEVER
Keya | B
Keyb
NEVER
NEVER
1 1 1 NEVER
NEVER
Keya | B
NEVER
NEVER
NEVER
For example, when the access control bit C13 C23 C33 = 1 0 0 of the block 3, the representation:
Password A: Unreadable, verify that Keya or Keyb can be written (change).
Access control: Verify that Keya or Keyb is correct, readable and writable.
Password B: Verify that Keya or Keyb is correct, readable and writable.
working principle
The electrical portion of the card is consisting of only one antenna and ASIC.
Antenna: The antenna of the card is only a few sets of winding coils, making it suitable for encapsulation into the IS0 card.
ASIC: The ASIC of the card consists of a high speed (106kb baud rate) RF interface, a control unit and one
8k-bit EEPROM composition.
Working principle: The reader is sent to the M1 card to the M1 electromagnetic wave. There is an LC series resonant circuit in the card, which is the same frequency as the frequency of the reader, and the LC resonance circuit generates resonance, thereby generating resonance. The capacitors have a charge in the other end of this capacitor, and there is a one-way conduction electronic pump, which is sent to the other capacitance, and this capacitor can be used when the accumulated charge reaches 2V. The power supply provides a working voltage for other circuits, emitting the interior data to or receives the data of the reader.
to be continued ...
appendix:
Reference:
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