专利名称：Privacy—preserving data queryingsortedlist
with authenticated denial of existence
发明人：Burton S. Kaliski, Jr.
申请号：US15271192
申请日：20160920
公开号：US10565394B2
公开日：
20200218
专利内容由知识产权出版社提供
专利附图：
摘要：In one embodiment, a tokenized list holder enables privacy-preserving querying with denial of existence functionality. Both an information requester and the tokenized list holder access related (or identical) tokenizing algorithms to generate tokenized
terms based on original terms. Prior to receiving a query for information based on a tokenized query term, the tokenized list holder generates sorted tokenized data terms that are associated with a database. Upon receiving the query, the tokenized list holder determines that the tokenized query term is not included in the sorted tokenized data terms. The tokenized list holder then generates a signed response that specifies a gap in the sorted tokenized data terms to indicate that the information is not included in the database. Advantageously, because neither the query nor the response includes original (i.e., untokenized) terms, the privacy of both the information requester and the database is preserved.
申请人：VERISIGN, INC.
地址：Reston VA US
国籍：US
代理机构：MH2 Technology Law Group, LLP
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