Information processing apparatus, terminal apparatus and information processing method

A terminal device comprising:

• a retaining unit configured to retain authentication image data representing an authentication image;
• and
• a processor executing a process that causes the terminal device to perform:
• generating second image data by replacing a part of image data to be processed by an information processing apparatus by the authentication image data retained in the retaining unit,
• transmitting the generated second image data to the information processing apparatus, and
• transmitting information indicating a position of the part, replaced by the authentication image data, of the second image data to the information processing apparatus.

An information processing method, comprising:

• acquiring image data, user identifying information and position indicating information indicating a position of authentication image data embedded in the image data from a requester making a request for a process with respect to the image data via a network;
• extracting image data in position indicated by the acquired position indicating information from the acquired image data, and determining whether the requester is identical with a self user identified by the acquired user identifying information by comparing characteristic information representing characteristic of the extracted image data with characteristic information stored in the information storage unit by being associated with the acquired user identifying information;
• and
• executing the process requested by the requester with respect to the acquired image data when the requester is determined to be the self user identified by the acquired user identifying information.

A computer-readable recording medium having stored therein a program for causing a computer to execute a information processing process, the information processing process comprising:

• acquiring image data, user identifying information and position indicating information indicating a position of authentication image data embedded in the image data from a requester making a request for a process with respect to the image data via a network;
• extracting image data in position indicated by the acquired position indicating information from the acquired image data, and determining whether the requester is identical with a self user identified by the acquired user identifying information by comparing characteristic information representing characteristic of the extracted image data with characteristic information stored in the information storage unit by being associated with the acquired user identifying information;
• and
• executing the process requested by the requester with respect to the acquired image data when the requester is determined to be the self user identified by the acquired user identifying information.