Secure product-sum combination system, computing apparatus, secure product-sum combination method and program therefor
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United States of America Patent
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Jun 23, 2015
Grant Date -
Dec 19, 2013
app pub date -
Mar 8, 2012
filing date -
Mar 10, 2011
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Abstract
The efficiency of multiplication in secure function computation is increased to make the secret function computation faster than before. Three or more computing apparatuses cooperate to generate a secret value of a random number, perform secure function computation for secret values of arbitrary values by using a function including addition and multiplication to compute concealed function values, and compute a secret value. If the secret value is [0], a concealed function value is output; otherwise, information indicating that tampering has been detected is output.
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