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Methods and systems for identifying targeted content item for user

  • US 10,116,627 B2
  • Filed: 05/11/2015
  • Issued: 10/30/2018
  • Est. Priority Date: 05/11/2015
  • Status: Active Grant
First Claim
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1. A method for identifying a targeted content item for a user, the method comprising:

  • receiving, by one or more processors, one or more encrypted first attributes associated with said user, and a first key, wherein said one or more encrypted first attributes are generated by encrypting one or more first attributes of said user using said first key;

    encrypting, by said one or more processors, one or more content items using said first key, wherein said one or more content items are stored in a data structure such that said one or more content items are indexed in said data structure according to respective bit-strings representing one or more second attributes associated with each of said one or more content items;

    determining, by said one or more processors, at least one encrypted content item from said data structure that corresponds with said one or more first attributes without decrypting said one or more encrypted first attributes, wherein determining said at least one encrypted content item comprises;

    performing an iterative Homomorphic cryptographic process on said data structure using said one or more encrypted content items in said data structure, said respective bit-strings representing the one or more second attributes of said indexed one or more content items, and said one or more encrypted first attributes; and

    providing said at least one encrypted content item to said user, wherein said at least one encrypted content item is decrypted to generate said targeted content item and wherein performing said iterative Homomorphic cryptographic process prevents release of said one or more second attributes to said user.

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