CHIPDRIVE CLOUD 4700F 905511 数据表

 

This command is used to load the key to the volatile memory of the reader. It can be used for 
all kinds of contactless cards. Refer to section 3.2.2.1.4 of [PCSC3] for further details. 

Load Keys 

0xFF 

0x82 

Key Struct 

Key Num 

Key 

data 

Key 

- 

 

The Key Structure (P1) is defined as follows: 

  b6  b5  b4  b3  b2  b1  b0  Description  

x 

 

 

 

 

 

 

 

0: Card Key; 1 Reader Key  

 

x 

 

 

 

 

 

 

0: Plain Transmission, 1: Secured Transmission  

 

 

x 

 

 

 

 

 

0: Keys are loaded into the volatile memory  
1: Keys are loaded into the non-volatile memory.  

 

 

 

x 

 

 

 

 

RFU  

 

 

 

 

xxxx 

If b6 is set, it is the Reader Key number that has 
been used for the encryption, else it is ignored. 
Only one reader key (0x00) is supported by CLOUD 
47x0 F  

 

: 

1)  Card keys can be loaded in both “secure” and “non-secure” mode. Card keys can only 

be loaded to the Volatile memory of the reader. 
 

2)  To load the card keys in secure mode, the application developer has to know the 128 

bit AES key of the reader. The default key is “00010203 05060708 0A0B0C0D 
0F101112”.  

As a Mifare key is only 6 bytes in length, data needs to be padded as per pkcs7 
padding scheme (see example below). 
 

3) The 

Reader-key 

can 

only 

be 

loaded 

in 

the secure-mode to the non-volatile memory of 

the reader. The new key is first XORed with the old key and encrypted with the old key. 
In order to validate the integrity of the processed key data, a 2 byte CRC has got to be 
sent following the key data. Refer to the example 

Load Keys – Reader – Secure

 for 

details. 

 

4)  The CRC16 is calculated as defined in CRC-16-CCITT (polynomial 0x8408) with an 

initial value of 0x0000. 

 

 

- 

SW1, SW2