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Secure computation of private values

  • US 7,860,244 B2
  • Filed: 12/18/2006
  • Issued: 12/28/2010
  • Est. Priority Date: 12/18/2006
  • Status: Active Grant
First Claim
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1. A system comprising:

  • a hardware-based processing unit toencrypt a private value of a party with a public-key encryption system and a public key to generate an encrypted private value anddecrypt an encrypted blinded result with the public-key encryption system and a private key to generate a blinded result; and

    a communication unit tosend the encrypted private value to a further party,receive the encrypted blinded result of a function, the function having as input the private value, andsend the blinded result to the further party, a first private value is a numerical value and the function is a summation function that adds the private value to private values of further parties, a second private value indicating whether the party contributes to a result of the summation function and the function is a counting function that counts contributions from the party and the further parties to generate a total number of contributing parties, the communication unit is further to receive an average value generated from the result of the summation function and a result of the counting function, and a third private value is a square of a difference between the numerical value and the average value and the function is the summation function.

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