Method for performing similar-information search while keeping content confidential by encryption
A similar-information search method includes obtaining an instruction indicating which of an encrypted search and an unencrypted search a data computation device is to perform; generating an encrypted feature quantity and transmitting the encrypted feature quantity to the data computation device; ge...
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| creator | Matsuzaki, Natsume Unagami, Yuji |
| description | A similar-information search method includes obtaining an instruction indicating which of an encrypted search and an unencrypted search a data computation device is to perform; generating an encrypted feature quantity and transmitting the encrypted feature quantity to the data computation device; generating an encrypted similarity value and transmitting the encrypted similarity value; and receiving encrypted reference data from the data computation device and decrypting the encrypted reference data. A homomorphic encryption scheme that makes decryption by the data computation device unsuccessful is used when the encrypted search is performed, whereas an encryption scheme that makes decryption by the data computation device successful is used when the unencrypted search is performed. |
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| subjects | ADVERTISING CALCULATING CODING OR CIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHERPURPOSES INVOLVING THE NEED FOR SECRECY COMPUTING COUNTING CRYPTOGRAPHY DISPLAY EDUCATION ELECTRIC COMMUNICATION TECHNIQUE ELECTRIC DIGITAL DATA PROCESSING ELECTRICITY PHYSICS SEALS TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION |
| title | Method for performing similar-information search while keeping content confidential by encryption |
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