Patent ID: 11895240
Assignee: NEC CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 12:
13. An information processing apparatus comprising:
one or more memories configured to store instructions; and
one or more processors configured to execute the instructions to:
receive an input indicating a recipient-designated access token including a recipient-designated hash value from an user, wherein the recipient-designated access token is being generated by:
generating a first hash value based on a first access token;
calculating an inverse element of a processed value, wherein the processed value is obtained by processing a random number and a secret information of a recipient using a processing function; and
embedding the calculated inverse element of the processed value into the generated first hash value;

authenticate the recipient-designated hash value included in the recipient-designated access token; and
in response to authenticating the recipient-designated hash value included in the recipient-designated access token, verify that the user who inputs the recipient-designated access token is a designated recipient to access a target resource.