Abstract:
Disclosed is a server for performing authentication or identification using biometric information including basic information and detailed information includes a storage for storing basic information and detailed information that are separately encrypted for each of a plurality of users, a communicator for communicating with an external device, and a processor configured to, based on separately encrypted basic information and detailed information being received from an external terminal device through the communicator, performing user authentication or user identification for the received basic information and detailed information by decrypting and comparing the stored encrypted basic information and the received encrypted basic information, and comparing the received detailed information with at least one piece of stored detailed information corresponding to a piece of basic information having a degree of similarity that is higher than or equal to a predetermined value and with the received basic information among the stored basic information.
Abstract:
An electronic apparatus is provided. The electronic apparatus includes, a communicator including communication circuitry, a storage, and at least one processor. The communication circuitry communicates with a plurality of user terminals and an external apparatus. The storage stores information of a plurality of users and a plurality of pieces of content. The at least one processor is configured to receive encrypted preference data of the user to first content from among the plurality of pieces of content from at least one among the plurality of user terminals through the communication circuitry, to transmit the encrypted preference data to the external apparatus, to receive characteristic data generated by applying an external operation and a re-encryption to the decrypted preference data from the external apparatus, to apply an internal operation to information of the plurality of users and the plurality of pieces of content through the received characteristic data, to predict a preference of the user to second content different from the first content based on the information subjected to the internal operation of the plurality of users and the plurality of pieces of content, and to provide the predicted preference information of the user to the second content. Thus, the operation may be performed efficiently and distributed with the external apparatus.
Abstract:
An electronic apparatus which prevents and/or reduces photographing of contents is provided. The electronic apparatus includes a camera and a processor configured to cause the electronic apparatus to turn off the display and/or control a display to display a UI for restricting photographing of the content in response to a predetermined object being detected in an image received by the camera.
Abstract:
A method and device for securing data of a message is provided. A method for encrypting a message of a user terminal device includes: receiving a message via a message input window; displaying the received message; encrypting the message by using a key index and an encryption key corresponding to a chatting window for the message based on an instruction for transmitting the message to another chatting party being received; and transmitting the encrypted message to the other chatting party.
Abstract:
A pellicle includes a pellicle frame, a pellicle membrane, and an attaching element, a first surface of the attaching element having exposed pores.
Abstract:
Disclosed is a method. The method includes placing a photomask on a receiver of a cleaning apparatus, removing adhesive residue from the photomask by irradiating laser on the adhesive residue, attaching a pellicle to the photomask, and exposing a semiconductor substrate to a light using the photomask, wherein the irradiating laser repeatedly pauses and restarts during the removing of the adhesive residue.