Abstract: Disclosed is a network photographing apparatus including a partial encryption function capable of encrypting only a portion of objects included in images. A network photographing apparatus including a partial encryption function, includes an object information extracting unit that receives digital image data from a photographing unit, analyzes a plurality of objects included in the digital image data, and generates object information data; an image compressing unit that processes the digital image data with compression data; and an encryption unit that searches encryption target object information data among the object information data received from the object information extracting unit and generates and sends out the encrypted compression data by encrypting only a part of the compression data, the part corresponding to the encryption target object information data.

Abstract: Disclosed is an Academy, Research Institute, and Agency (ARIA) encryption/decryption apparatus for encrypting and decrypting input data by repeating a plurality of rounds.

Abstract: An apparatus for protecting privacy information of a surveillance image includes a key management unit for generating and managing keys used to unmask a masked input image; an input image processing unit for unmasking the input image using the keys, decoding the unmasked input image to acquire an uncompressed image data, and then applying a second masking on an area containing privacy information of the image data. Further, the apparatus for protecting the privacy information of the surveillance image includes an image recording unit for encoding the image data to which the second masking has been applied to store the encoded image data.

Abstract: An SVC encryption apparatus includes: an encoding/encryption unit for performing SVC (Scalable Video Coding) encoding on input data contents and carrying out encryption for data in accordance with a first encryption condition to generate a corresponding SVC bitstream; and a NAL (Network Adaptation Layer) data analysis unit for analyzing NAL data of the generated SVC bitstream to find out NAL data satisfying a second encryption condition. Further, the SVC encryption apparatus includes a conditional NAL data encryption unit for encrypting the extracted NAL data in accordance with the second encryption condition; and a bitstream transmitting unit for transmitting the SVC bitstream with encrypted NAL data.

Abstract: A database encryption and query method keeping an order within a bucket partially, which encrypts and stores numeric data in a database, includes calculating a relative value of a plaintext within a bucket to which the plaintext is allocated; generating a first key value by producing a random number within the bucket; generating a second key value for defining a function having a bucket range of the bucket as an input; and changing the relative value based on the first and the second key value with keeping an order of the relative value partially to store the changed relative value. The first key value may be a value of separating order informations on the relative value. Further, the second key value may be a resultant value obtained by applying a mod 2 operation to the bucket size of the bucket.

Abstract: Provided is a method of generating and searching for a single ternary content addressable memory (TCAM) entry for range search and exact-match search. First, it is determined whether an entry to be added is a range search entry or an exact-match search entry. When the entry is the range search entry, a bit at a predetermined position in the upper m bits corresponding to a range represented by the entry is set to “1” and the remaining bits including lower n bits is set to a “don't care” bit x, based on a range table for representing position information of one of the upper m bits which is set to “1” in ranges. When the entry is the exact-match search entry, the upper m bits is set to “don't care” bit x and the lower n bits is set to the entry value. By generating and searching for a single TCAM entry for a range search and an exact-match search, a space for storing the TCAM entry can be optimized and efficiency thereof can be improved.

Abstract: A block cipher ARIA substitution apparatus, the apparatus includes a first Sbox operation unit for performing operations of a substitution box S1 and a substitution box S1?1; a second Sbox operation unit for performing operations of a substitution box S2 and a substitution box S2?1; and a control unit for determining modes of the first Sbox operation unit and the second Sbox operation unit.

Abstract: Disclosed is an Academy, Research Institute, and Agency (ARIA) encryption/decryption apparatus for encrypting and decrypting input data by repeating a plurality of rounds.

Abstract: An apparatus and method for generating random numbers using digital logic are provided. The apparatus includes a shift register which sequentially moves bit values stored therein, a feedback circuit which performs a predetermined logic operation on the bit values stored in the shift register to generate a feedback signal, an external signal generation circuit which generates an external signal input to the shift register, and an input logic circuit which performs a predetermined logic operation on the feedback signal and the external signal and inputs a result of operation to the shift register. The method includes sequentially moving bit values stored in a shift register, (b) performing a predetermined logic operation on the bit values stored in the shift register to generate a feedback signal, (c) generating an external signal input to the shift register, and (d) performing a predetermined operation on the feedback signal and the external signal and inputting a result of the operation to the shift register.

Abstract: A wireless communication medium includes an antenna, an analog signal processor, a digital signal processor, and a central processing unit & logic module. The antenna transmits and receives a signal to and from an external apparatus. The analog signal processor converts an analog signal to a digital signal, and converts a digital signal to an analog signal. The digital signal processor demodulates the digital signal, detects the start and end of data, and generates a first control signal for determining whether data is transmitted to the external apparatus and a second control signal for perceiving the end of data, blocking the reception of data, modulating data, and determining whether modulated data is transmitted to the external apparatus. The central processing unit & logic module processes data received from and transmitted to the external apparatus. Accordingly, an efficiency of processing a RF signal can be improved.

Abstract: Provided is a method of storing data in a non-volatile memory, including generating and storing logs including data to be stored and an address of the non-volatile memory in response to a data-writing request, and comparing addresses of the logs and storing data corresponding to the same page by the unit of page in a corresponding area of the non-volatile memory. The method makes it possible to minimize delay in storing data, reduce the number of accesses to the non-volatile memory and uniformly write data in the whole non-volatile memory, thereby minimizing a response time of the non-volatile memory and increasing the lifetime of the non-volatile memory.

Abstract: Provided are a wireless communication medium and a method for operating the wireless communication medium. The wireless communication medium includes an antenna, an analog signal processor, a digital signal processor, and a central processing unit & logic module. The antenna transmits and receives a signal to and from an external apparatus. The analog signal processor converts an analog signal received via the antenna to a digital signal, and converts a digital signal to be transmitted to the external apparatus to an analog signal and transmits the analog signal to the antenna.

Abstract: Provided is a method of storing data in a non-volatile memory, including generating and storing logs including data to be stored and an address of the non-volatile memory in response to a data-writing request, and comparing addresses of the logs and storing data corresponding to the same page by the unit of page in a corresponding area of the non-volatile memory. The method makes it possible to minimize delay in storing data, reduce the number of accesses to the non-volatile memory and uniformly write data in the whole non-volatile memory, thereby minimizing a response time of the non-volatile memory and increasing the lifetime of the non-volatile memory.