Abstract: A data processing method includes selecting, as a codeword, a vector from among a plural vectors, the vector including multiple elements and having a predetermined size, generating a helper matrix by using the codeword and real number data that corresponds to biometric information, and outputting helper matrix.

Abstract: Provided are identifier (ID)-based encryption and decryption methods and apparatuses for the methods. The ID-based encryption method includes having, at a transmitting terminal, a transmitting-side private key corresponding to a transmitting-side ID issued by a key issuing server, generating, at the transmitting terminal, a session key using the transmitting-side ID, a receiving-side ID, and the transmitting-side private key, extracting, at the transmitting terminal, a secret key from at least a part of the session key, and encrypting, at the transmitting terminal, a message using a previously set encryption algorithm and the secret key.

Abstract: The present invention provides an LED illuminated keyboard, which controls LED components with specific color hues to illuminate by pressing a specific key. The LED illuminated keyboard according to the present invention merely uses a micro control unit (MCU) commonly used in a keyboard of a computer, and connects switch circuits capable of controlling the LED components with the specific color hues to an output terminal of a GPIO of the MCU, to make a plurality of keys of the keyboard illuminate with multiple color hues. Therefore, the LED illuminated keyboard according to the present invention brings in advantages of low cost and easy use.

Abstract: An exemplary keyboard includes a keyboard shell; a supporting panel arranged to the keyboard shell and having a plurality of elastomer holes therein; a plurality of keycaps arranged on the lastomer holes; a plurality of keycap supports between the supporting panel and the corresponding keycaps; a plurality of elastomers being exposed out of the supporting panel; and an FPC sheet arranged under the supporting panel, and a key signal pads substrate arranged under the FPC sheet; the FPC sheet comprises a key signal pads layer with a plurality of upper key signal pads corresponding to the plurality of elastomers holes and a insulative layer with a plurality of connecting holes under the key signal pads layer; lower key signal pads corresponding to the upper key signal pads are arranged on the key signal pads substrate, the lower key signal pads opposite to the upper key signal pads.

Abstract: A keyboard includes a keyboard shell, a supporting panel, a plurality of keycaps, a plurality of keycap supports between the supporting panel and the corresponding keycaps; a plurality of elastomers through the corresponding elastomer holes; and a key signal pad substrate with a plurality of key signal pad corresponding to the elastomer hole; the elastomer includes a top part, an elastic supporting part, the elastomer is arranged on the key signal pad substrate; and a conductive layer arranged on the bottom surface of the pressure enhancing protrusion; the pressure enhancing protrusions are corresponding to the key signal pad, respectively, when pressure is supplied on the keycap, the corresponding pressure enhancing protrusion is pressed and make the conductive layer electrically connect to the key signal pad, the pressure enhancing protrusion is supported on the key signal pad substrate by the elastic supporting part.

Abstract: A method and apparatus for computing a discrete logarithm using a pre-computation table are provided. The method includes previously generating the pre-computation table consisting of chains of function values obtained by applying an iterating function to a predetermined number of initial values having a generator of the cyclic group as a base and having different exponents; and if a function value obtained by applying the iterating function to a value having a target element as a base and having an exponent is identical to a function value stored in the pre-computation table, computing the discrete logarithm of the target element by using exponent information of the two function values.

Abstract: An exemplary keyboard includes a keyboard shell; a supporting panel arranged to the keyboard shell and having a plurality of elastomer holes therein; a plurality of keycaps arranged on the corresponding elastomer holes; a plurality of keycap supports between the supporting panel and the corresponding keycaps; a plurality of elastomers through the corresponding elastomer holes and being exposed out of the supporting panel; light emitting members arranged on the light emitting substrate and corresponding to each of the keycap; and an FPC sheet arranged between the light emitting substrate and the supporting panel, the FPC sheet comprising a key signal pads corresponding to each of the elastomer holes; light emitting substrate arranged under the supporting panel; the cross-section area of the elastomer hole is greater than that of the elastomer.

Abstract: A keyboard includes a keyboard shell; a supporting panel; a plurality of keycaps; a plurality of keycap supports between the supporting panel and the corresponding keycaps; a plurality of elastomers through the corresponding elastomer holes; an FPC sheet with a plurality of key signal pads corresponding to the plurality of elastomers; a light emitting substrate arranged under the FPC sheet, and a plurality of light emitting light emitting parts arranged on the light emitting substrate; a fixing groove which is used for fixing the supporting panel, the FPC sheet and the light emitting substrate formed on the keyboard shell; the elastomer being arranged on the FPC sheet; the supporting panel, the FPC sheet, and the light emitting substrate being supported in the keyboard shell and the light beams from the light emitting part being guided through the light through holes to the up side of the supporting panel.

Abstract: Provided are identifier (ID)-based encryption and decryption methods and apparatuses for the methods. The ID-based encryption method includes having, at a transmitting terminal, a transmitting-side private key corresponding to a transmitting-side ID issued by a key issuing server, generating, at the transmitting terminal, a session key using the transmitting-side ID, a receiving-side ID, and the transmitting-side private key, extracting, at the transmitting terminal, a secret key from at least a part of the session key, and encrypting, at the transmitting terminal, a message using a previously set encryption algorithm and the secret key.

Abstract: An exemplary keyboard includes a keyboard shell; a supporting panel arranged to the keyboard shell and having a plurality of elastomer holes therein; a plurality of keycaps arranged on the corresponding elastomer holes; a plurality of keycap supports between the supporting panel and the corresponding keycaps; a plurality of elastomers through the corresponding elastomer holes and being exposed out of the supporting panel; light emitting members arranged on the light emitting substrate and corresponding to each of the keycap; and an FPC sheet arranged between the light emitting substrate and the supporting panel, the FPC sheet comprising a key signal pads corresponding to each of the elastomer holes; light emitting substrate arranged under the supporting panel; the cross-section area of the elastomer hole is greater than that of the elastomer.

Abstract: A keyboard includes a keyboard shell, a supporting panel, a plurality of keycaps, a keycap support opposite to the supporting panel, a plurality of elastomer arranged on FPC, a light emitting substrate disposed at a lower side of the supporting panel, a plurality of light emitting members disposed on the light emitting substrate, a FPC sheet, and a flexible support portion of the elastomer having a top part and extending from the top part in an arch shape and a pressure protrusion of the elastomer formed on a bottom surface of the top part, and a conductive layer formed on the surface of the pressure protrusion; the pressure protrusion is opposite to the key signal pad on FPC, the pressure protrusion contacts the key signal pad and is supported by the flexible support portion; the supporting panel has a plurality of receiving holes arranged through a thickness direction.

Abstract: The present invention provides a multi-hues LED illuminated keyboard, which controls LED components with specific color hues to illuminate by pressing a specific key. The multi-hues LED illuminated keyboard according to the present invention merely uses a micro control unit (MCU) commonly used in a keyboard of a computer, and connects switch circuits capable of controlling the LED components with the specific color hues to an output terminal of a GPIO of the MCU, to make a plurality of keys of the keyboard illuminate with multiple color hues. Therefore, the multi-hues LED illuminated keyboard according to the present invention brings in advantages of low cost and easy use.

Abstract: The present invention provides an LED illuminated keyboard, which controls LED components with specific color hues to illuminate by pressing a specific key. The LED illuminated keyboard according to the present invention merely uses a micro control unit (MCU) commonly used in a keyboard of a computer, and connects switch circuits capable of controlling the LED components with the specific color hues to an output terminal of a GPIO of the MCU, to make a plurality of keys of the keyboard illuminate with multiple color hues. Therefore, the LED illuminated keyboard according to the present invention brings in advantages of low cost and easy use.

Abstract: A keyboard includes a keyboard shell, a supporting panel, a plurality of keycaps, a plurality of keycap supports between the supporting panel and the corresponding keycaps; a plurality of elastomers through the corresponding elastomer holes; and a key signal pad substrate with a plurality of key signal pad corresponding to the elastomer hole; the elastomer includes a top part, an elastic supporting part, the elastomer is arranged on the key signal pad substrate; and a conductive layer arranged on the bottom surface of the pressure enhancing protrusion; the pressure enhancing protrusions are corresponding to the key signal pad, respectively, when pressure is supplied on the keycap, the corresponding pressure enhancing protrusion is pressed and make the conductive layer electrically connect to the key signal pad, the pressure enhancing protrusion is supported on the key signal pad substrate by the elastic supporting part.

Abstract: An exemplary keyboard includes a keyboard shell; a supporting panel arranged to the keyboard shell and having a plurality of elastomer holes therein; a plurality of keycaps arranged on the lastomer holes; a plurality of keycap supports between the supporting panel and the corresponding keycaps; a plurality of elastomers being exposed out of the supporting panel; and an FPC sheet arranged under the supporting panel, and a key signal pads substrate arranged under the FPC sheet; the FPC sheet comprises a key signal pads layer with a plurality of upper key signal pads corresponding to the plurality of elastomers holes and a insulative layer with a plurality of connecting holes under the key signal pads layer; lower key signal pads corresponding to the upper key signal pads are arranged on the key signal pads substrate, the lower key signal pads opposite to the upper key signal pads.

Abstract: A keyboard includes a keyboard shell; a supporting panel; a plurality of keycaps; a plurality of keycap supports between the supporting panel and the corresponding keycaps; a plurality of elastomers through the corresponding elastomer holes; an FPC sheet with a plurality of key signal pads corresponding to the plurality of elastomers; a light emitting substrate arranged under the FPC sheet, and a plurality of light emitting Light emitting par arranged on the light emitting substrate; a fixing groove which is used for fixing the supporting panel, the FPC sheet and the light emitting substrate formed on the keyboard shell; the elastomer being arranged on the FPC sheet; the supporting panel, the FPC sheet, and the light emitting substrate being supported in the keyboard shell and the light beams from the light emitting part being guided through the light through holes to the up side of the supporting panel.

Abstract: A method and apparatus for computing a discrete logarithm using a pre-computation table are provided. The method includes previously generating the pre-computation table consisting of chains of function values obtained by applying an iterating function to a predetermined number of initial values having a generator of the cyclic group as a base and having different exponents; and if a function value obtained by applying the iterating function to a value having a target element as a base and having an exponent is identical to a function value stored in the pre-computation table, computing the discrete logarithm of the target element by using exponent information of the two function values.

Abstract: Disclosed is a digital entertainment system which can receive, store and reproduce multimedia data such as broadcasts, provide diverse communication interfaces, and exchange and share data with external appliances connected thereto. In the network printer control system, an audio and video (A/V) signal processing part receives external broadcasting signals, and outputs digital data obtained through a process of channel selection and demodulation of the broadcasting signal. A data over cable service interface specification (DOCSIS) and out of band (OOB) processing part provides a communication interface according to a DOCSIS standard and for an OOB service. An MPEG processing part generates standard video signals by decoding input data by a predetermined method, and outputs the generated standard video signals to any external appliances, and a system bus communicably connects the signal processing part, the DOCSIS/OOB processing part and the MPEG processing part.