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Identification based on encrypted biometric data

  • US 8,700,912 B2
  • Filed: 12/19/2008
  • Issued: 04/15/2014
  • Est. Priority Date: 12/21/2007
  • Status: Active Grant
First Claim
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1. A management method for storing and indexing biometric data in a database in encrypted form, said database comprising a set of filters (B1, . . . , Bm) respectively associated with filter identifiers;

  • wherein said management method comprises the following steps at a management unit;

    /1/ receiving a biometric data item;

    /2/ storing, at a given address in the database, said biometric data item in encrypted form;

    /3/ obtaining keywords based on a first set of hash functions and on said biometric data item;

    /4/ associating a subset of indexing filters with each keyword by selecting filters for each keyword as a function of the respectively associated filter identifiers, of said keywords, and of a second set of hash functions; and

    /5/ associating said given address in encrypted form with each of the filters in the subset of indexing filters.

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