System and method for controlling access to a user secret using a key recovery field
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United States of America Patent
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Aug 7, 2001
Issued Date -
N/A
app pub date -
Feb 12, 1998
filing date -
Feb 21, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A system and method for data recovery is described. In one embodiment, an encrypting system encrypts a message or file using a secret key (KS) and attaches a key recovery field (KRF), including an access rule index (ARI) and KS, to the encrypted message or file. To access the encrypted message or file, a decrypting system must satisfactorily respond to a challenge issued by a key recovery center. The challenge is based on one or more access rules that are identified by the ARI included within the KRF.
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