Electronic bolt lock with enhanced security features

Details Electronic bolt lock with enhanced security features Electronic bolt lock with enhanced security features

1991-09-20

1992-12-08

Cangialosi, Salvatore

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 52, H04K 100

Patent

active

051704315

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.

REFERENCES:
patent: Re29259 (1977-06-01), Sabsay
patent: 3821704 (1974-06-01), Sabsay
patent: 4207555 (1980-07-01), Trombly
patent: 4213118 (1980-07-01), Genest et al.
patent: 4509093 (1985-04-01), Stellberger
patent: 4736419 (1988-04-01), Roe
patent: 4786900 (1988-11-01), Karasawa et al.
patent: 4837822 (1989-06-01), Crosley et al.
patent: 4914732 (1990-09-01), Henderson et al.
patent: 4988987 (1991-01-01), Barrett et al.

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