发明名称 |
Certificate-based encryption and public key infrastructure |
摘要 |
A digital message is sent from a sender to a recipient in a public-key based cryptosystem comprising an authorizer. The authorizer can be a single entity or comprise a hierarchical or distributed entity. In some embodiments, no key status queries or key escrow are needed. The recipient can decrypt the message only if the recipient possesses up-to-date authority from the authorizer. Other features are also provided. |
申请公布号 |
US8074073(B2) |
申请公布日期 |
2011.12.06 |
申请号 |
US20090552720 |
申请日期 |
2009.09.02 |
申请人 |
GENTRY CRAIG B.;NTT DOCOMO, INC. |
发明人 |
GENTRY CRAIG B. |
分类号 |
H04L9/08;H04L9/30;H04L9/00;H04L9/32 |
主分类号 |
H04L9/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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