Method for performing similar-information search while keeping content confidential by encryption
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United States of America Patent
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Jan 23, 2018
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app pub date -
May 25, 2016
filing date -
May 29, 2015
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Abstract
A similar-information search method includes receiving, with a data computation device, an encrypted feature quantity and an encrypted similarity value from a user terminal device; calculating, with the data computation device, an encrypted distance between an encrypted reference feature quantity and the encrypted feature quantity; determining, with the data computation device, whether the encrypted distance matches the encrypted similarity value; generating, with the data computation device, encrypted reference data that is information obtained by encrypting reference data if it is determined that the encrypted distance matches the encrypted similarity value; and transmitting, with the data computation device, the generated encrypted reference data to the user terminal device.
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