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Recording medium apparatus and control method for authenticating a device based on a revocation list
US8997216B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8997216-B2 |
| Application number | US-201213817045-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 18, 2012 |
| Priority date | Apr 25, 2011 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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Abstract
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A storage unit 601 g of a recording medium device 600 g stores a content and a revocation list. The revocation list includes a revocation identifier that is associated with the content and identifies a revoked public key certificate allocated to an apparatus related to use of the content. A controller 602 g of the recording medium device 600 g is provided with an acquisition unit 621 g that acquires, from an apparatus 300 g , an acquisition request for the content and an apparatus identifier identifying a public key certificate of the apparatus 300 g ; a judgment unit 622 g that judges whether the apparatus identifier matches a revocation identifier; and a control unit 623 g that controls to prohibit output of the content to the apparatus when the apparatus identifier and the revocation identifier match.
First claim
Opening claim text (preview).
The invention claimed is: 1. A non-transitory computer-readable recording medium device comprising: a storage unit; and a tamper-resistant controller, the storage unit storing one or more contents and one or more individual revocation lists, each individual revocation list being associated with a content among the one or more contents, a plurality of apparatuses being related to use of the content, and when one or more apparatuses among the plurality of apparatuses is revoked,…
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Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US8997216B2 cover?
- A storage unit 601 g of a recording medium device 600 g stores a content and a revocation list. The revocation list includes a revocation identifier that is associated with the content and identifies a revoked public key certificate allocated to an apparatus related to use of the content. A controller 602 g of the recording medium device 600 g is provided with an acquisition uni…
- Who is the assignee on this patent?
- Kozuka Masayuki, Yamaguchi Takahiro, Nakano Toshihisa, and 5 more
- What technology area does this patent fall under?
- Primary CPC classification H04L9/3263. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 31 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).