Electronic bolt lock with enhanced security features
First Claim
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1. An electronic bolt lock comprising:
- a bolt;
electronic controls;
internal, self contained electrical power generating means for electrically powering said electronic controls;
a key cylinder;
a key insertable into said key cylinder and comprising a data storage means for storing at least a code for accessing and opening said lock;
means connectable to said key cylinder to withdraw said bolt;
said electronic control means further comprising means for creating a new access code and encrypting said code upon each successful operation of said lock;
means for storing a unique identifier for said key in said key;
means for storing a unique identifier for said lock in said lock;
said means for creating and encrypting further comprising means for encrypting said key identifier as a step in said encrypting;
means for storing said new access code in encrypted form in both said lock and said key for use in accessing said lock on the next operation of said lock by said key.
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Abstract
A high security bolt lock is described having the ability to reencrypt the combination code for the lock each time a key is used and thus partially defeat the use of an unauthorized key. The lock may be operated by a temporary one time use key. The key for the lock carries a data storage means and battery to provide a date/time stamp and key identification for any key used. The key and lock may be coded to only allow access in a particular time block, or only in conjunction with an other key. The access to the lock may be controlled such that two keys must be used in a prescribed order to gain access through the lock.
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Citations
17 Claims
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1. An electronic bolt lock comprising:
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a bolt; electronic controls; internal, self contained electrical power generating means for electrically powering said electronic controls; a key cylinder; a key insertable into said key cylinder and comprising a data storage means for storing at least a code for accessing and opening said lock; means connectable to said key cylinder to withdraw said bolt; said electronic control means further comprising means for creating a new access code and encrypting said code upon each successful operation of said lock; means for storing a unique identifier for said key in said key; means for storing a unique identifier for said lock in said lock; said means for creating and encrypting further comprising means for encrypting said key identifier as a step in said encrypting; means for storing said new access code in encrypted form in both said lock and said key for use in accessing said lock on the next operation of said lock by said key. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification