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1. (WO2018220952) RANDOMNESS VERIFICATION SYSTEM AND METHOD OF VERIFYING RANDOMNESS

Pub. No.:    WO/2018/220952    International Application No.:    PCT/JP2018/010661
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Sat Mar 17 00:59:59 CET 2018
IPC: G09C 1/00
H04L 9/16
Applicants: PANASONIC CORPORATION
パナソニック株式会社
Inventors: KITAZAWA Atsurou
北沢 淳郎
KOBAYASHI Masaaki
小林 正明
MUTOU Kouji
武藤 浩二
Title: RANDOMNESS VERIFICATION SYSTEM AND METHOD OF VERIFYING RANDOMNESS
Abstract:
A terminal (10) exchanges a common key (Kp) generated using a seed (sd), the randomness of which was recognized in advance, with a verification server (30). The terminal (10) generates verification data (vd) using a plurality of measured values from a noise source (15). The terminal (10) encrypts the verification data (vd) with the common key (Kp) and transmits the verification data (vd) to the verification server (30). The verification server (30) verifies the randomness of verification data (vd) obtained by decrypting the encrypted verification data (vd) with the common key (Kp). When it is determined that the verification data (vd) has randomness, the verification server (30) transmits a verification result to the effect that the randomness of the verification data (vd) is recognized to the terminal (10). The terminal (10) acquires a plurality of measured values and generates a new seed (sd) in accordance with the verification result from the server (30) and preserves the new seed (sd) in a secure area (13).