Patent ID: 11968300
Assignee: NEC CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 9:
10. A non-transitory computer-readable recording medium storing a program, causing a computer to perform processing for:
generating a secret key for encrypting secret information, which is information that a user wishes to keep secret; and
generating registration data including first information obtained by encrypting the secret information by using the secret key and second information obtained by encrypting the secret key by using at least biological information of the user;
acquiring the registration data;
extracting the secret key from the registration data by using biological information of the user; and
extracting the secret information from the registration data by using the extracted secret key,
wherein the generating comprises generating the second information by using, a hash value of a first identifier that identifies the secret information, a result of encoding the secret key, and the biological information of the user.