发明授权
- 专利标题: Non-interactive hierarchical identity-based key-agreement
- 专利标题(中): 基于非交互式层次化身份的密钥协商
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申请号: US12043755申请日: 2008-03-06
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公开(公告)号: US08422681B2公开(公告)日: 2013-04-16
- 发明人: Rosario Gennaro , Shai Halevi , Hugo M Krawczyk , Tal Rabin
- 申请人: Rosario Gennaro , Shai Halevi , Hugo M Krawczyk , Tal Rabin
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 代理机构: August Law, LLC
- 代理商 George Willinghan
- 主分类号: H04L29/06
- IPC分类号: H04L29/06
摘要:
A pairwise key-agreement scheme is provided for creating key agreements non-interactively between pairs of nodes disposed in a hierarchy of nodes. The scheme is non-interactive so that any two nodes can agree on a shared secret key without interaction. In addition, the scheme is identity-based so that any given node only needs to know the identity of peer nodes to compute the shared secret key. All of the nodes are arranged in a hierarchy where an intermediate node in the hierarchy can derive the secret keys for each of its children from its own secret key and the identity of the child. Accordingly, the scheme is fully resilient against compromise of any number of leaves in the hierarchy and of a threshold number of nodes in the upper levels of the hierarchy. The scheme is well-suited for environments such as mobile ad-hoc networks (MANETs), which are very dynamic, have acute bandwidth-constraints and have many nodes are vulnerable to compromise.
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