Method for encrypting and decrypting metadata

Details Method for encrypting and decrypting metadata Method for encrypting and decrypting metadata

2003-09-03

2010-02-23

Pich, Ponnoreay (Department: 2435)

Cryptography

Key management

C380S255000, C380S259000

Reexamination Certificate

active

07668316

ABSTRACT:
A method of encrypting metadata that can be represented by a tree structure. The method involves generating an encryption key for a predetermined node of the metadata using a function that takes as input parameters an encryption key for an upper node of the predetermined node and information specifying the predetermined node, and encrypting data of the predetermined node using the generated encryption key.

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