Abstract: An integrated circuit card system and method are disclosed. The integrated circuit card system may include a host and a memory card for storing test data transferred from the host. The host may transfer the test data to the memory card when a processing time of the memory card exceeds a reference time. The memory card may calculate the test data transferred from the host, and the host may read out the calculated test data.

Abstract: A portable storage device and method of managing a file in the portable storage device are provided. The portable storage device includes a control module sorting digital rights management data from received data and forming a file comprising the digital rights management data, and a storage module storing the file. The method includes sorting digital rights management data from received data, forming a file comprising the digital rights management data, and storing the file in a storage module. Accordingly, files can be securely managed to be suitable to DRM.

Abstract: For digital rights management (DRM), a method for performing authentication between a device and a portable storage, which is performed by the device, includes transmitting a first key to the portable storage, receiving a third key and a first encrypted random number obtained by encrypting a first random number using the first key from the portable storage and decrypting the first encrypted random number using a second key related with the first key, generating a second encrypted random number by encrypting a second random number using the third key and transmitting the second encrypted random number to the portable storage, and generating a session key using the first random number and the second random number. The technique guarantees secure authentication between the device and the portable storage for DRM.

Abstract: An example embodiment of the present invention relates to a method of executing a logic operation while remaining safe from side channel attacks. Another example embodiment of the present invention relates to a logic circuit and device for executing a logic operation while remaining safe from side channel attacks.

Abstract: A method and apparatus for managing digital rights using a portable storage device are provided. The method includes a device performing primary authentication together with a license provider and establishing primary security association, the device performing secondary authentication together with the portable storage device and establishing secondary security association, receiving a license from the license provider, and transmitting the license to the portable storage device.

Abstract: A method and apparatus for managing digital rights of a portable storage device are provided. The method comprises a device performing authentication together with the portable storage device and sharing an encryption key with the portable storage device as a result of the authentication, requesting a rights object list from the portable storage device, receiving the rights object list from the portable storage device, and processing and displaying the rights object list.

Abstract: A method of reducing power consumption and/or enhancing computation speed in the modulus multiplication operation of a Montgomery modulus multiplication module. A coding scheme reduces the need for an adder or memory element for obtaining multiple modulus values, and the use of carry save addition with carry propagation addition enhances the computational speed of the multiplication module.