Abstract: A domain management method and substitutable system is provided. When a domain manager, which manages digital rights in a local area, permanently or temporarily becomes unavailable, the domain management method and system may protect the digital rights of the area by using another domain manager.

Abstract: Provided is a system for executing applications stored in an application server on a mobile terminal. The mobile terminal includes: a mobile terminal input/output processing unit for processing data input via an input device of the mobile terminal and data to be output via an output device thereof; a mobile terminal information transmitting and receiving unit for transmitting and receiving data to and from the outside via an Internet network; and a data processing unit for decoding the structural data received from the mobile terminal information transmitting and receiving unit and sending the decoded data to the mobile terminal input/output processing unit, or encoding data received from the mobile terminal input/output processing unit and sending the encoded data to the mobile terminal information transmitting and receiving unit.

Abstract: An integrated remote control system includes a remote control device for selecting and controlling a plurality of digital devices, each including a bit pattern tag having location information and device information. The remote control device includes a display, a light emitting module for emitting light toward the digital devices, a sensor for recognizing the tags of the digital devices, and a controller for analyzing the tags recognized by the sensor to provide the display information of the digital devices on the display and then controlling a digital device selected from the displayed digital devices.

Abstract: Disclosed are a method and apparatus capable of reducing the number of computations required to generate a digital signature by a digital signature generator. A digital signature generator generates a code word for a received message by a function F for generating a code word having a set weight value and generates a digital signature based on the generated code word and an inverse of a public parity check matrix H, the parity check matrix H is one way function. A digital signature receiver converts the received message using the function F for generating a code word, and multiplies a public parity check matrix H by a received digital signal, the public parity check matrix H is a one way function, and comparing the converted value with the multiplication result.

Abstract: An external authentication method authenticates access a home network from outside the home network using temporal credential information. The method of authentication for the home network includes requesting a transmission of temporal credential information from the home server for authenticating a user, and receiving the temporal credential information from the home server. The temporal credential information is information including, for example, a temporal authentication key. Accordingly, the home user can access the home network by performing a facilitated and safer authentication using the temporal authentication key from outside the home network.

Abstract: A method and device for local domain management are provided and include a local domain authority device. The local domain authority (LDA) device includes a location limited channel (LLC) interface for transmitting and receiving information of devices which are positioned within a limited location and a (LDA) module for authenticating a device which is selected as a member of a domain from the devices, transmitting device authentication information corresponding to the domain, to the authenticated device via the LLC interface, and registering the authenticated device as a member of the domain. The method and device provide an easy and secure means for domain management.

Abstract: The present invention relates to a process for the preparation of 4-aminomethyl-3-alkoxyiminopyrrolidine methane-sulfonate, a key intermediate of quinolone antibiotics. According to the process of the present invention, the total number of steps has been shortened to 2-3 steps, the solid separation is not required, and the use of costly chemicals, particularly (BOC)2O (t-butoxycarbonyl anhydride), several organic solvents and reactants, is eliminated.

Abstract: An apparatus and method are provided for reducing time taken for generating a digital signature and generating the digital signature using a minimum number of operations using at least two secret keys. One secret key among at least two secret keys may be set from a value resulting from hashing a message to be transmitted. A number of times for hashing the secret key is determined, and a value resulting from hashing the determined secret key by the determined hashing number of times is set as the digital signature.

Abstract: A system and method for transmitting and receiving secret information, a device using the same, and a wireless local communication device. The system for transmitting and receiving secret information includes at least one device to generate a ciphertext using public key information that is received over a location-limited channel; and a wireless local communication device to transmit the public key information to the device over the location-limited channel and to decrypt the ciphertext generated at the device. Thus, the secret information can be securely transmitted and received between devices regardless of reliability of the transmission channel.

Abstract: Provided are a method and an apparatus for generating and validating a digital signature. The apparatus for generating the digital signature includes: a converter converting a message to be transmitted into a codeword having a set length using a Griesmer code; and a digital signature generator allowing each of bits constituting the codeword to correspond to one of a plurality of secret keys constituting a table and combining the corresponding secret keys to generate the digital signature. The apparatus for validating the digital signature includes: a converter converting a received message into a codeword having a set length using a Griesmer code; and a digital signature validator allowing each of bits constituting the codeword to correspond to one of a plurality of public keys constituting a table and validating whether a value obtained by combining the corresponding public keys is equal to a value obtained by hashing the digital signature.

Abstract: A device and a method for establishing a trusted path between a user interface and a software application to securely execute the software stored in a memory along the trusted path and offer the user's desired service are provided. Accordingly, the trusted path is established so that attackers can not invade a normal path between the user interface and software. Additionally, the device securely executes the original software which is not fabricated so that the user can receive desired services from the device.

Abstract: A device and method for verifying the integrity of a memory in a remote device are provided. An exemplary memory integrity verification method compares, based on a verification parameter received from a verifier, the time for retrieving data block of a memory of a remote device with a maximum threshold time allowed to read the memory, and transmits to the verifier a remote verification code and a data status according to the result of comparison so that the verifier can verify the integrity of the memory. Instead of relying on the verifier, the remote device provides data status information for integrity verification by using the memory retrieval time. As a result, accurate integrity verification is provided, and no independent hardware is required to verify integrity.

Abstract: An apparatus and method for restricting the functions of a device are provided. A restriction monitoring system includes a communication system that provides a location-limited communication channel that detects whether a device entering a perimeter is in an area for device inspection, a server that provides a credential and a security policy to the device and receives a report on whether the device violates the security policy through the location-limited communication channel, and an alarm system which triggers a security alarm when the device violates the security policy.

Abstract: A system to output an icon in response to a hot-key input, including a microcomputer to sense an instruction input through a hot-key and to output a scan code corresponding to the instruction, a keyboard launcher to receive the scan code from the microcomputer, to analyze the scan code, and to generate a message that requests an output of a hot-key icon indicating the operation of the hot-key based on the analyzed scan code, a system basic input/output system (BIOS) to provide information required to output the hot-key icon, and a display manager to receive the message generated by the keyboard launcher and to output the hot-key icon based on the information received from the system BIOS.

Abstract: An LCD including a transflective polarizing filter and a method of providing a power-saving function and a security-function in the LCD. The LCD includes an application module to receive a reflection ratio of a transflective polarizing filter which performs reflecting and polarizing operations, a reflection/polarization control module to control the reflection ratio of the transflective polarizing filter according to the reflection ratio, and a lamp driving module to generate a lamp driving voltage that corresponds to the reflection ratio to drive a lamp.

Abstract: Provided are a DMB system for reducing a working load of a DMB receiving terminal, a method of transmitting PSI/SI version information, and a method of parsing PSI/SI. When PSI/SI is generated, a DMB station receives version information of the PSI/SI from each of PSI/SI generators, generates PSI/SI version information, and transmits the generated PSI/SI version information through a specific channel. Then, the DMB receiving terminal receives the PSI/SI version information, compares the received PSI/SI version information to stored PSI/SI version information, and parses received PSI/SI according to the comparison result. Accordingly, by controlling the DMB receiving terminal to parse PSI/SI only if the PSI/SI has been modified, an unnecessary working load due to the parsing can be reduced.

Abstract: Disclosed is a method for authenticating a mobile node in a wireless local area network including at least two access points and an authentication server. When the mobile node associates with a first access point and performs initial authentication, the mobile node receives a first session key for secure communication from the authentication server by using a first private key generated with a secret previously shared with the authentication server, and the first access point receives the first session key from the authentication server by using a second private key previously shared with the authentication server.

Abstract: A communication system including a device, an access point (AP) communicating with the device, and a mobile terminal communicating with the device and the AP, and a method in which the device and the AP share a device key that is a private key used in wireless local area network (WLAN) communication, are provided. A one-directional function operation module is provided in each component constituting the communication system, thereby enabling one-directional function operation. Data to be transmitted and received is applied to one-directional function operation in one-directional function operation module, such that the data can be securely transmitted or received.

Abstract: A virtual mouse driving apparatus and method for processing a variety of gesture commands as equivalent mouse commands based on two-handed gesture information obtained by a video camera are provided. The virtual mouse driving method includes: keeping track of an input gesture input with the video camera; removing a background portion of the input gesture image and extracting a left-hand region and a right-hand region from the input gesture image whose background portion has been removed; recognizing a left-hand gesture and a right-hand gesture from the extracted left-hand region and the extracted right-hand region, respectively, and recognizing gesture commands corresponding to the recognition results; and executing the recognized gesture commands.

Abstract: A verifier for remotely checking integrity of a device connected via a network, includes a calculator which fills free areas in a memory of the device with random numbers and generates a local check code; an interface which transmits integrity check parameters that are used by the device to generate a remote check code, to the device, and receiving the remote check code from the device; a determiner which detects a remote check code generation time and compares the detected remote check code generation time with a prestored remote check code generation expectation time; and a controller which confirms the integrity of the memory of the device when the remote check code generation time does not exceed the remote check code generation expectation time according to a result of the determination and the local check code matches the remote check code.