DATA MANAGEMENT SYSTEM, DATA MANAGEMENT METHOD, AND NON-TRANSITORY RECORDING MEDIUM

A first computer generates a secret key based on biometric information on a user of the first computer. A second computer holds a public key corresponding to the secret key, encrypted data as data encrypted based on the public key, a list of indexes indicating a type of the data, and an index of the encrypted data, and transmits the list to the first computer. The first computer designates an index of data to be presented, which is an index included in the list, and transmits the designated index to the second computer. The second computer transmits, to the first computer, the encrypted data corresponding to the index transmitted by the first computer. The first computer decrypts the encrypted data corresponding to the index based on the secret key and transmits the decrypted data to the third computer.