HTRM800/AED Ver la hoja de datos (PDF) - Philips Electronics
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HTRM800/AED Datasheet PDF : 20 Pages
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Philips Semiconductors
HITAG long range reader module
hardware
Product specification
HTRM800 family
7.6 Security considerations
Developing the HITAG system special consideration was
given to aspects of security. The following items represent
the fundamental framework of the security concept:
• Cryptography
• Mutual authentication
• Password verification
• Cyclic Redundancy Check (CRC).
7.6.1 DATA PRIVACY
The use of cryptography (stream cypher), mutual
authentication, and password verification prevents
monitoring and copying the data channel. Therefore, the
area of the transponder that only can be accessed
enciphered is called ‘secret area’.
To make use of cryptography for HITAG 1 transponders
you need:
• Keys to be used for initializing of the crypto block
• Logdata to be used for mutual authentication.
To make use of cryptography for HITAG 2 transponders
you need:
• A key which is used to initialize the crypto block using
HITAG 2 in crypto mode
• Passwords which are used for authentication for
HITAG 2 in password mode.
The transponders and the HTRM800 are provided with
identical transport keys and transport logdata so that you
can start operating them right away (see Table 2).
In order to offer our OEM clients high flexibility, the
configuration of the transponder memory, password, keys
and logdata can be changed. We strictly recommend to
rigorously restrict these possibilities for the end customers
(by setting the configuration page to read only, setting
password, keys and logdata to neither read nor write).
Table 2 Transport values predefined by Philips.
SYSTEM
HITAG 1
HITAG 2
PARAMETER
keyinit password
keys
logdata
keyinit password
key
password TAG
password RWD
0x00000000
0x00000000
0x00000000
0x00000000
0x4D494B524F4E
0xAA4854
0x4D494B52
VALUE
2001 Oct 04
9
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