System for enabling lazy-revocation through recursive key...

Details System for enabling lazy-revocation through recursive key... System for enabling lazy-revocation through recursive key...

2007-04-10

2007-04-10

Moazzami, Nasser (Department: 2136)

Cryptography

Key management

Key distribution

C380S277000

Reexamination Certificate

active

09984927

ABSTRACT:
A plurality of users may have access to a file. The file is encrypted with a key. Access for a user to the file is revoked. A new key is generated from the current key of the file in response to said revocation, and the file is encrypted with the new key.

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