发明申请
- 专利标题: Range-Based Queries for Searchable Symmetric Encryption
- 专利标题(中): 基于范围的可搜索对称加密查询
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申请号: US13435721申请日: 2012-03-30
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公开(公告)号: US20130262852A1公开(公告)日: 2013-10-03
- 发明人: Thomas Roeder , Mihaela Ion
- 申请人: Thomas Roeder , Mihaela Ion
- 申请人地址: US WA Redmond
- 专利权人: Microsoft Corporation
- 当前专利权人: Microsoft Corporation
- 当前专利权人地址: US WA Redmond
- 主分类号: G06F12/14
- IPC分类号: G06F12/14 ; H04L9/00
摘要:
Techniques enable range-based queries in searchable symmetric encryption (SSE) systems. A server device includes or provides access to a database that stores encrypted documents along with an encrypted index that maps bucketized terms (e.g., a term coupled with a value range associated with that term) to encrypted documents. Search is performed through a two-step process in which the client first sends a first search token to request the bucketization for a term, then sends one or more second search tokens each specifying a particular bucket in which to search for the term. In response to the second tokens, the server sends information corresponding to encrypted documents that satisfy the search. Embodiments further provide for incremental addition and deletion of particular values for a term, and rebucketization at the client when a rate of false positive search results exceeds a threshold.
公开/授权文献
- US08832427B2 Range-based queries for searchable symmetric encryption 公开/授权日:2014-09-09
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