Samsung Electronics Co., Ltd.

Sang-Gyoo Sim

Yun-Sang Oh

Kyung-im Jung

Yeo-Jin Kim

Ji-Soo Kim

Suk-bong Lee

Kyung-Im Jung

A method of transferring a rights object (RO) and an electronic device are provided. The method includes generating a secure RO by encrypting an RO including usage rights information regarding digital content and transferring the secure RO from a first device to a second device.

Method of transferring rights object and electronic device

A device and a portable storage device which are capable of transferring a rights object (RO) and a method of transferring an RO are provided. The method includes enabling a device to transmit an installation request message to a portable storage device for installing a copy of an original RO present in the device in the portable storage device, enabling the device to install the copy of the original RO in the portable storage device, and enabling the device to receive an installation response message indicating that the copy of the original RO has been successfully installed in the portable storage device from the portable storage device.

Device and portable storage device which are capable of transferring rights object, and a method of transferring rights object

An apparatus and method are provided for securely managing security data between a host device and a secure multimedia card. A host device includes an access mode setting unit which sets an access mode for security data that is stored in a secure multimedia card, a transmitting and receiving unit which transmits an access request message that includes the set access mode, and an access information managing unit which receives, if connection between the host device and the secure multimedia card is separated, access information stored in the secure multimedia card, and compares the access information.

Apparatus and method of managing security data

Disclosed are a method and apparatus for efficiently providing a location of a contents encryption key. A method of efficiently providing a location of a contents encryption key according to an embodiment of the present invention includes generating metadata containing information regarding a location of a contents encryption key in a rights object, and setting the generated metadata and the rights object in a portable storage device.

Method and apparatus for efficiently providing location of contents encryption key

Provided are a digital rights management (DRM) method and apparatus, and more particularly, a DRM method and apparatus which can support different DRMs and use various digital content. The DRM method includes receiving a hello message request from a host device; comparing information included in the hello message request to information stored in advance; generating an error code when the hello message request contains unsupported information; and generating a hello message response that contains the error code.

Digital rights management method and apparatus

Provided are a method and apparatus for creating and applying a secure file identifier of a rights object by using random numbers. The apparatus includes a secure-file-identifier generating unit which creates the secure file identifier by generating a random number and combining the random number with a hash value corresponding to a rights object identifier of the file identifier list; a transmitting unit which transmits the secure file identifier to the storage device; and a receiving unit which receives a secure file identifier list for identifying the rights object from a storage device.

Method and apparatus for creating and applying secure file identifier of rights object by using random numbers

A host device and a method of implementing Digital Rights Management (DRM) systems in a low-efficiency storage device are provided. The host device includes a plurality of DRM systems and a DRM system-shared interface module. The DRM systems provide pieces of DRM-related data and data identifiers (IDs) which identify the pieces of data. The DRM system-shared interface module adds DRM system IDs, which are used to identify the DRM systems, to the pieces of data and the data IDs, and provides results, which are obtained by adding the DRM system IDs, to a low-efficiency storage device.

Apparatus and method for implementing digital rights management systems in low-efficiency storage device

An apparatus and method for managing a plurality of certificates are provided. The apparatus for managing a plurality of certificates includes a plurality of certificates, a certificate search table, a low-performance file system, and a verification module. The certificate search table includes information about the plurality of certificates. The low-performance file system extracts a corresponding certificate from among the plurality of certificates that are received from a host device, with reference to the certificate search table based on a root certificate authority ID and information about a public key of a certificate of a certificate authority that issued the host device certificate. The verification module uses the extracted certificate to verify the host device certificate.

Apparatus and method for managing plurality of certificates

A method and apparatus for implementing a secure clock having no internal power source are disclosed. The apparatus accesses a host device having an internal power source and transmits and receives data. The apparatus includes a clock control unit, a counter, and a time information unit. The clock control unit performs control such that the time information of the host device is acquired and a counter value corresponding to the acquired time information is set, when the clock control unit is connected to the host device and is supplied with power from the host device. The counter changes the set counter value in steps of a predetermined value at regular time intervals while the power is supplied. The time information unit updates current time information to correspond to the changed counter value while the power is supplied.

Method and apparatus for implementing secure clock in device having no internal power source

An apparatus and method for hierarchically connecting devices are provided. The apparatus includes a controller that determines at least one of whether an authentication value of a layer including a second device to be connected to a first device is valid, and whether a connection has been granted to the layer including the second device, and a generator that generates an authentication value of a layer including the first device, when the first and the second devices are connected.

Apparatus and method for hierarchically connecting devices

A method and apparatus for searching a rights object and a mapping method and mapping apparatus for the same are provided. The apparatus for searching a rights object includes a transmitting/receiving unit which transmits at least one from a rights object identifier, content identifier list and a rights object to a portable storage device, and a searching unit which searches, from mapping information located in the portable storage device stored with the rights object identifier mapped with the content identifier from the content identifier list, the rights object identifier corresponding to the content identifier by using the content identifier as a search key, and retrieves the rights object stored in a rights slot corresponding to the searched rights object identifier.

Growing community of inventors

Suwon-si, South Korea

Sang-Gyoo Sim