Secured access checking system enabling the automatic transfer of entitlement to produce keys
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United States of America Patent
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-
Apr 30, 2002
Grant Date -
N/A
app pub date -
May 13, 1999
filing date -
Apr 19, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A secured system of access checking using a portable storage carrier (C) on which there is recorded an electronic key (CL), a digital data processing instrument (LE) for the production of keys, and an electronic lock (L) function capable of authorizing access should the storage carrier have the requisite electronic key. To transfer an entitlement to produce keys (CL) from one production digital data processing instrument (LE) to another, it is loaded with a new public key (K') and the signature (CER') of this key.
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