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NETRONIX
5.5. Key management
Key management feature includes key loading to internal key memory. For security
reasons, these keys cannot be red-out.
To maintain the highest level of data security, employed a particular philosophy
of working with these keys.
It allows unit or person who possesses the highest level of confidence to load a
key. Such loading operation can be made one time only, or very rarely.
Reader operation in given application is based on using a key not directly, but on
recalling key number, to login to sector.
The result is that, in substance, key does not appear in data bus in given application.
Additionally, a user is advised to make sure key should have proper access
rights to sectors. This is accomplished by card initialization process, where new
confidential keys are loaded to cards with proper access rights, which are assigned to
these keys.
Keys A and B are assigned to each sector.
Commands C_LoadKeyToSKB and C_LoadKeyToDKB load these keys to reader
memory without information on key type (A or B).
During logging to sector, user has to input as a parameter value of 0xAA or 0xBB, if he
wants, the key which is being recalled would be treated as an A or B.
Key loading into dynamic key memory
5.5.1.
Dynamic memory features of automatic content delete in case of supply decay. The
memory can be overwritten many times.
Command frame:
Header
C_LoadKeyToDKB
Where:
Parameter name
C_LoadKeyToDKB
Key1...6
Response frame:
Header
C_LoadKeyToDKB +1
NETRONIX
Key1...6
Parameter description
Key loading to key dynamic memory
6-byte code
CTU-Mxx
CRC
Value range
0x14
whichever
OperationCode
CRC
.
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