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US-12177293-B2 · Dec 24, 2024 · US
Key generation device, key generation program, secret search system, and key distribution method
US9237137B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9237137-B2 |
| Application number | US-201314420995-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 12, 2013 |
| Priority date | Jan 12, 2013 |
| Publication date | Jan 12, 2016 |
| Grant date | Jan 12, 2016 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A public parameter PK is key information used in a secret search system having: a transmission device generating and sending an encryption tag which is an encrypted keyword; a server receiving and storing the encryption tag and conducting a secret search in response to a request for the secret search; and a reception device generating a trapdoor which corresponds to a digital signature of the keyword and as well data requesting the secret search, sending the trapdoor to the server, and receiving a search result. The public parameter PK includes a true public parameter PP and a protection key PK′. The transmission device and the reception device require both the true public parameter PP and the protection key PK′; however, the server does not require the protection key PK′. The key generation device generates separately the true public parameter PP and the protection key PK′ included in the public parameter PK.
First claim
Opening claim text (preview).
The invention claimed is: 1. A key generation device of key information used in a secret search system having: a transmission device generating encrypted data and an encryption tag which is an encrypted keyword for searching the encrypted data; a server device receiving from the transmission device and storing the encrypted data and the encryption tag, and also conducting a secret search in response to a request for the secret search; and a reception device generating a trapdo…
Assignees
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Classifications
Electricity · mapped topic
Physics · mapped topic
Electricity · mapped topic
- H04L63/0428Primary
Electricity · mapped topic
- H04L9/3073Primary
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9237137B2 cover?
- A public parameter PK is key information used in a secret search system having: a transmission device generating and sending an encryption tag which is an encrypted keyword; a server receiving and storing the encryption tag and conducting a secret search in response to a request for the secret search; and a reception device generating a trapdoor which corresponds to a digital signature of the k…
- Who is the assignee on this patent?
- Hattori Mitsuhiro, Hirano Takato, Ito Takashi, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification H04L63/0428. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 12 2016 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).