摘要:
There is described a method of controlling access to IP streaming content by a plurality of receivers. The method comprises the steps of (a) for each receiver in the plurality of receivers, providing that receiver with access to first control information for that receiver to enable that receiver to access a first portion of the content; (b) identifying a receiver from the plurality of receivers as an identified receiver; (c) updating the first control information so as to provide updated control information for each receiver, the updated control information being associated with a second portion of the content; and (d) configuring each receiver to fetch the updated control information for that receiver. For the identified receiver, the updated control information is invalid such that the identified receiver is unable to fully access the second portion of the content. A server configured to carry out the method is also described.
摘要:
A transmission method for terminal unique information used for generation of a terminal unique work key used for encryption of a scramble key used for encryption of data is provided. A server receives, from a terminal, a terminal unique information acquisition request including a terminal unique public key certificate of the terminal, refers to a discarded terminal information table in which encrypted terminal unique public key certificates of terminals not permitted to acquire the terminal unique information are described, checks whether an encrypted terminal unique public key certificate of the terminal is described in the discarded terminal information table, and transmits, when the encrypted terminal unique public key certificate is not described in the discarded terminal information table, the terminal unique information of the terminal to the terminal.
摘要:
A source device and method for authenticating a sink device. The source device and method include detecting when the sink device connects to a communication interface and in response to detecting a connected sink device, activating a sink device authentication protocol which authenticates whether the connected sink device is an approved sink device for connecting via the communication interface. The source device determines a level of authentication of the connected sink device from among a first-level authentication and a second-level authentication based on first and second authentication components, respectively derived from different master keys, which affects the type of content provided to the sink device. Responsive to the level of authentication provided through the connected sink device, modifying the content transmitted to the connected sink device, and preventing transfer of any content from the source device to the sink device in response to the sink device not being authenticated.
摘要:
An integrated broadcasting communications receiver, comprises: an application activation information extracting unit; an application obtaining unit; an application execution unit; an application controlling unit; a revocation list extracting unit and a verification key extracting unit for extracting a revocation list and a verification key from broadcast data; a revocation list verifying unit for verifying if a provider ID of an application is written in a revocation list; and a resource managing unit for obtaining a resource.
摘要:
According to one embodiment, a digital TV tuner module (204) receives digital broadcast program data including encrypted program contents. A descrambler (413) decrypts the program contents included in the received digital broadcast program data. A encryption unit (507) encrypts the decrypted program contents by an encryption key and outputs the encrypted program contents onto a PCI bus. A revocation information storage unit (502b) stores revocation information indicating that an information processing apparatus (10) is revoked. Revocation circuits (800, 900, 940, 920, A10, A20, A30) prevents any one of a plurality of devices (4, 110, 111, 113-116) from redistributing program contents outside the information processing apparatus (10) in accordance with the revocation information stored in the storage unit (502b).
摘要:
A secure video system for a graphics display adaptor includes a module for decrypting a content signal from a media player or other secure content source. The adaptor may be provided as a component of a computer graphics system, or in a stand-alone special-purpose device. The adaptor may include other features for preventing unauthorized use of protected content, for example authenticating the source of a content signal before providing an output video signal, encrypting the output video signal, responding to commands to renew or revoke cryptographic keysets, and embedding forensic tracking information in a video signal.
摘要:
A secure pre-recorded medium (110) and a method for descrambling encrypted content (114) thereon. When a player (120) wants to access the content, a secure processor (111) on the medium verifies (202) that the player has not been revoked, preferably by comparing an identity of the player with identities in a revocation list (113), after which a mutual authentication is performed (204). The secure processor then verifies (205) that the player has the rights to access the content and provides (206, 207) the player with the key necessary to descramble the content, whereafter the player descrambles (208) the content.
摘要:
The invention has an object to provide a recording and reproducing device capable of protecting the copyright stronger than ever by detecting the abuse when the information having the copyright is utilized fraudulently and revoking the device in which the abuse is performed, if necessary. In the recording and reproducing device, the detecting unit (116) detects the abuse of the digital content data and the control program controlling the recording and reproducing device, and the revoking unit (117) halts the use of the recording and reproducing device when the detecting unit (116) detects the abuse.