Patent application number | Description | Published |
20080301793 | APPARATUS AND METHOD OF VERIFYING ONLINE CERTIFICATE FOR OFFLINE DEVICE - An apparatus and a method are provided for verifying an online certificate for an offline device. The apparatus includes a nonce generation unit which generates a nonce and a certificate verification request message that requests verification of a certificate on a target online device subject to authentication, wherein the certificate verification request message includes the generated nonce; a transmitting and receiving unit which transmits the certificate verification request to an online device and receives an online certificate status protocol (OCSP) response message from the online device; and a certificate verification result determination unit which extracts a nonce from the OCSP response and compares the extracted nonce with the nonce generated by the nonce generation unit to determine whether the OCSP response is reliable. | 12-04-2008 |
20090025085 | METHOD AND SYSTEM FOR DOWNLOADING DRM CONTENT - A method and system for downloading DRM contnt are provided. The method includes a first device supporting DRM technology and acquiring content information from a download descriptor downloaded from a content provider system, the first device transmitting the acquired content information to a second device not supporting DRM technology, and the second device downloading the DRM content from the content provider system using the downloaded content information. | 01-22-2009 |
20100049971 | Apparatus and Method for Using Secure Removable Media (SRM) in Digital Rights Management - An apparatus and a method for using a Secure Removable Media (SRM) in Digital Rights Management (DRM) are provided. The method for using the SRM in Digital Rights Management (DRM) includes determining, at a plurality of content service providers, an SRM usage rule and providing the determination to a trust authority using an eXtensible Markup Language (XML); receiving messages comprising the SRM usage rule from the content service providers and sending the messages to an apparatus together with an electronic signature; and receiving the messages comprising the SRM usage rule and changing an operation of the apparatus according to requirements of at least one content service provider. Thus, various content business models can be realized. | 02-25-2010 |
20100049972 | Apparatus and method for using contents information in digital rights management - An apparatus and method for determining contents information corresponding to a Rights Object (RO) by transmitting information on contents together when the RO is moved from a mobile device to a memory card or a smart card or when the RO is moved from the memory card or the smart card to the mobile device are provided. The apparatus includes a meta information manager for determining information on contents corresponding to the RO when the RO is moved, and for generating meta information containing the determined contents information, and a controller for providing control to transmit the RO and the meta information generated by the meta information manager to a portable storage device. Accordingly, the conventional problem can be solved in which information on contents cannot be determined by using a Contents IDentifier (CID) if the RO does not exist together with the contents. | 02-25-2010 |
20130111601 | APPARATUS AND METHOD FOR USING CONTENTS INFORMATION IN DIGITAL RIGHTS MANAGEMENT | 05-02-2013 |
20140123326 | METHOD AND APPARATUS FOR TRANSMITTING RIGHTS OBJECT INFORMATION BETWEEN DEVICE AND PORTABLE STORAGE - A method and apparatus for transmitting rights object information between a device and a portable storage are provided. The method includes transmitting a predetermined request from the device to the portable storage, generating a current permission status format including information of a rights object designated by the request, using the portable storage, and transmitting the current permission status format from the portable storage to the device. According to the method and apparatus, overhead is reduced and information transmission speed is increased when the rights object information is transmitted between the device and the portable storage. | 05-01-2014 |
20140150112 | DEVICE AND PORTABLE STORAGE DEVICE WHICH ARE CAPABLE OF TRANSFERRING RIGHTS OBJECT, AND A METHOD OF TRANSFERRING RIGHTS OBJECT - 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. | 05-29-2014 |
20140150113 | DEVICE AND PORTABLE STORAGE DEVICE WHICH ARE CAPABLE OF TRANSFERRING RIGHTS OBJECT, AND A METHOD OF TRANSFERRING RIGHTS OBJECT - 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. | 05-29-2014 |