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Fault-Tolerant Privacy-Preserving Statistics

  • US 20130275743A1
  • Filed: 04/12/2012
  • Published: 10/17/2013
  • Est. Priority Date: 04/12/2012
  • Status: Active Grant
First Claim
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1. A method in a first system for performing a computation that is representative of applying a function ƒ

  • on a plurality of plaintext data, the method comprising;

    receiving a plurality of ciphertext data from a plurality of data producers, the ciphertext data being obtained respectively from the plaintext data using an encryption algorithm of a homomorphic cryptographic system;

    producing a computed value from the ciphertext data using a function ƒ

    h that is derived from the function ƒ

    using a relationship defined by the homomorphic cryptographic system;

    sending the computed value to a second system separate from the first system; and

    receiving from the second system an extracted value that is based on the computed value, the extracted value representative of a computed result produced by applying the function ƒ

    on the plurality of plaintext data.

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