CLRC632 Datasheet, PDF (138/163 Pages) NXP Semiconductors – Multiple Protocol Contactless Reader IC

Philips Semiconductors
Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
CL RC632
19.3 Performing MIFARE^ Classic Authentication
To enable authentication of MIFARE^ Classic cards the Crypto1 security algorithm is implemented. To obtain
valid authentication, the correct key has to be available in the key buffer of the CL RC632.
Step 1: Load the internal key buffer by means of the LoadKeyE2- (see 18.9.1) or the LoadKey-Command
(see 18.9.2).
Step 2: Start the Authent1-Command (see 18.9.3). When finished, check the error flags to obtain the
status of the command execution.
Step 3: Start the Authent2-Command (see 18.9.4). When finished, check the error flags and bit
Crypto1On to obtain the status of the command execution.
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