Patent ID: 9064123
Filing Date: 2015-06-23
Classification: G06F,H04L

Abstract:
1. A secure product-sum combination system comprising: three or more computing apparatuses configured to cooperate to perform a secure function computation on secret values [A wherein hold, where a, b, α and β are arbitrary values greater than or equal to 0 and less than p; and each of the three or more computing apparatuses comprises at least one processor configured to: cooperate with at least other two computing apparatuses to generate a secret value [r] of a random number r greater than or equal to 0 and less than p; cooperate with the at least other two computing apparatuses to compute concealed function values [C]=[f([A cooperate with the at least other two computing apparatuses to compute a secret value [r·C−C′] and if [r·C−C′] is [0], outputting [C], otherwise outputting information indicating that tampering has been detected.