Data management and encryption in a distributed computing system
US-2024305442-A1 · Sep 12, 2024 · US
Data protection system that protects data by encrypting the data
US9130741B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9130741-B2 |
| Application number | US-201313858306-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 8, 2013 |
| Priority date | Mar 29, 2001 |
| Publication date | Sep 8, 2015 |
| Grant date | Sep 8, 2015 |
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- Title
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Abstract
Official abstract text for this publication.
A data protection system includes terminals, and an encryption device that encrypts distribution data distributed to each terminal. Each terminal corresponds with one node on a lowest level of a tree structure having hierarchies. A data protection system excludes nodes on the lowest level, determines a plurality of combination patterns that include combinations of two or more of all four nodes that are reached one level below the node, decides an individual decryption key for each determined combination pattern, and decides an individual decryption key for each node on the lowest level. The data protection system prescribes nodes that are reached from the node on the lowest level and a terminal to the node on the highest level that is an invalid node. For invalid nodes, the data protection system designates an encryption key that corresponds to the decryption key determined in correspondence with the combination pattern that combines all nodes, excluding invalid nodes, and encrypts distribution data that uses each of the designated encryption keys.
First claim
Opening claim text (preview).
The invention claimed is: 1. A terminal device that is used in a data protection system that comprises three or more terminals including the terminal device, an encryption device, and an encryption key designation device, and that protects distribution data that is to be distributed to said terminals, according to said encryption device encrypting the distribution data, wherein: each terminal is operable to (i) store a decryption key group assigned individually to the terminal, r…
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Electricity · mapped topic
Physics · mapped topic
Physics · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9130741B2 cover?
- A data protection system includes terminals, and an encryption device that encrypts distribution data distributed to each terminal. Each terminal corresponds with one node on a lowest level of a tree structure having hierarchies. A data protection system excludes nodes on the lowest level, determines a plurality of combination patterns that include combinations of two or more of all four nodes …
- Who is the assignee on this patent?
- Panasonic Corp
- What technology area does this patent fall under?
- Primary CPC classification H04L9/0836. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Sep 08 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).