Secure computation system, secure computation apparatus, secure computation method, and recording medium

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United States of America Patent

PATENT NO 11456862
APP PUB NO 20200213097A1
SERIAL NO

16624101

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Abstract

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Pi and P+ have stored a+∈{a0, a1, a2} and b+∈{b0, b1, b2} therein, and Pi and P− have stored a−∈A− and b−∈B− therein. Here, P+−P(i+1)mod 3, P−=P(i−1)mod 3, and a and b are arbitrary values and satisfy a=a0+a1+a2 and b=b0+b1+b2, where A− is a complement of a+ in {a0, a1, a2} and B− is a complement of b+ in {b0, b1, b2}. Pi and P+ share r+, Pi and P− share r−, and Pi calculates c+=(a++a−)(b++b−)−a−b−+r+−r−. Pi sends c+ to P+.

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Patent Owner(s)

  • NIPPON TELEGRAPH AND TELEPHONE CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chida, Koji Musashino, JP 38 207
Ikarashi, Dai Musashino, JP 82 240
Kikuchi, Ryo Musashino, JP 62 415

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