Appeal No. 95-0143
Application 07/865,849
security systems in which access to a lock is granted through
passing of appropriate data from an electronic key to an
electronic lock.
Independent claims 1, 10 and 17 are reproduced as follows:
1. An electronic security system, comprising:
a lock, including
a lock memory storing therein an identification number of
said lock, an encryption code associated with said lock, and a
seed number, and
means for encrypting said stored seed number with said
encryption code to generate an encrypted seed number;
key means couple with said lock for communicating therewith,
including;
a key memory storing therein a list of lock identification
numbers and corresponding encryption codes,
means for receiving said identification number of said lock
and said seed number from said lock,
means for encrypting said received seed number with an
encryption code retrieved from said key memory corresponding to
said received identification number to generate an encrypted seed
number, and
means for transmitting said encrypted seed number to said
lock;
said lock further including
means for comparing said encrypted seed number received from
said key means with the encrypted seed number generated in said
lock, and
2
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