ENCRYPTED-DATA PROCESSING METHOD, SYSTEM, AND APPARATUS

摘要

A first code is generated from data by using a second error correction encoding method, and a second code is generated from the first code and a first random number by using a first error correction encoding method. First masked data is generated by masking registration target data by using the second code, and the first masked data is registered in a database. A third code is generated from a second random number by using the first error correction encoding method. Second masked data is generated by masking matching target data by using the third code. Synthesized data is generated by synthesizing the second masked data and the first masked data registered in the database, and the synthesized data is decoded in accordance with the first error correction encoding method and the second error correction encoding method.

主权项

1. An encrypted-data processing method comprising:
generating a first code from first data by using a second error correction encoding method and generating a second code from the first code and a first random number by using a first error correction encoding method; generating first masked data by masking registration target data by using the second code and registering the first masked data in a database; generating a third code from a second random number by using the first error correction encoding method; generating second masked data by masking matching target data by using the third code; and generating synthesized data by synthesizing the second masked data and the first masked data registered in the database and decoding the synthesized data in accordance with the first error correction encoding method and the second error correction encoding method.