Invention Grant
US08213609B2 Key generating device, encrypting device, receiving device, key generating method, encrypting method, key processing method, and program
失效
密钥生成装置，加密装置，接收装置，密钥生成方法，加密方法，密钥处理方法和程序
- Patent Title: Key generating device, encrypting device, receiving device, key generating method, encrypting method, key processing method, and program
- Patent Title (中): 密钥生成装置，加密装置，接收装置，密钥生成方法，加密方法，密钥处理方法和程序
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Application No.: US12329673Application Date: 2008-12-08
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Publication No.: US08213609B2Publication Date: 2012-07-03
- Inventor: Masafumi Kusakawa , Seiichi Matsuda , Tomoyuki Asano , Harunaga Hiwatari
- Applicant: Masafumi Kusakawa , Seiichi Matsuda , Tomoyuki Asano , Harunaga Hiwatari
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P.
- Priority: JPP2007-319268 20071211; JPP2008-010953 20080121; JPP2008-150982 20080609
- Main IPC: H04L9/00
- IPC: H04L9/00
Abstract:
A key generating device according to an embodiment of the present invention includes: a parameter determining unit that randomly determines a plurality of parameters that are needed when generating a secret key and a public key; a bilinear group selecting unit that selects a plurality of bilinear groups and bilinear mapping on the basis of the plurality of parameters; and a key generating unit that generates the secret key and the public key on the basis of the parameters and the plurality of bilinear groups.
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