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US 2006/0139681 A1Published application
Use of variant and base keys with three or more entities
AssigneeSilverbrook Research Pty Ltd
InventorSimon Walmsley
Life of this patent
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Abstract
A first entity including: a first bit-pattern a non-volatile memory storing resource data, a first base key for use with at least a first variant key; a second variant key for use with a second base key, the second variant key being the result of a one way function applied to: the second base key; and the first bit-pattern or a modified bit-pattern based on the first bit-pattern.
Claims44
A first entity including:
- a first bit-pattern
- a non-volatile memory storing resource data,
- a first base key for use with at least a first variant key;
- +P2
- a second variant key for use with a second base key, the second variant key being the result of a one way function applied to:
- the second base key;
- and the first bit-pattern or a modified bit-pattern based on the first bit-pattern.
4 more elements
Dependencies are inferred from the claim text.