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    • 3. 发明申请
    • System for protecting information content
    • 保护信息内容的系统
    • US20050195976A1
    • 2005-09-08
    • US11083882
    • 2005-03-17
    • Yacov YacobiPaul EnglandGideon Yuval
    • Yacov YacobiPaul EnglandGideon Yuval
    • H04N7/169H04N7/01
    • H04N21/4402H04N7/1696H04N21/4122H04N21/43632H04N21/4367H04N21/4405H04N21/4408
    • System for protecting copyrighted information, e.g., video signals, from unauthorized copying. Analog red (R), green (G) and blue (B) video signals are transmitted from a source device, e.g., a display adapter, to a display device, e.g., a monitor, over corresponding analog signal lines after the identify of the destination device is confirmed by receipt of a certificate assigned to the destination device. A session key, used for encrypting the analog signals, is generated and exchanged between the source and destination devices after the identification of the destination device is confirmed. The source and destination devices each includes a pseudo-random number generator driven by the session key. The lines that carry the R, G and B video signals are changed, e.g., swapped, on a periodic basis as a function of the output of the pseudo-random number generator in the source device. The destination device, which has an input to its pseudo-random number generator synchronized with the random number generator of the source device, decrypts the received video signals in a complimentary fashion to the encryption. Encrypted digital information subject to copying constraints may be supplied to a display adapter via an IEEE 1394 compliant bus.
    • 用于保护受版权保护的信息(例如,视频信号)的未经授权的复制的系统。 模拟红色(R),绿色(G)和蓝色(B)视频信号从源设备(例如显示适配器)传输到显示设备,例如监视器,在相应的模拟信号线上, 通过接收分配给目的地设备的证书来确认目的地设备。 在确认目的地设备的识别之后,在源设备和目的设备之间生成用于加密模拟信号的会话密钥。 源和目标设备每个都包括由会话密钥驱动的伪随机数发生器。 作为源设备中的伪随机数发生器的输出的函数,周期性地改变携带R,G和B视频信号的线路,例如交换。 具有与源设备的随机数发生器同步的其伪随机数发生器的输入的目的地设备以接收的视频信号以加密方式互补地解密。 受复制限制的加密数字信息可以通过IEEE 1394兼容总线提供给显示适配器。
    • 4. 发明申请
    • Methods and apparatus for protecting signals transmitted between a source and destination device over multiple signal lines
    • 用于通过多个信号线保护在源和目的地设备之间传输的信号的方法和装置
    • US20050207577A1
    • 2005-09-22
    • US11134111
    • 2005-05-20
    • Paul EnglandAndrew RosenYacov YacobiGideon Yuval
    • Paul EnglandAndrew RosenYacov YacobiGideon Yuval
    • H04N5/44H04N7/16H04N7/167H04N7/24
    • H04N9/641H04N5/765H04N5/775H04N5/913H04N7/163H04N7/1675H04N9/8042H04N21/2541H04N21/4122H04N21/4367H04N21/835H04N2005/91328H04N2005/91364
    • Methods and apparatus for protecting copyrighted information, e.g., video signals, from unauthorized use are described. Encrypted video signals are transmitted from a source device, e.g., display adapter, to a display device, e.g., monitor, over analog signal lines after the identity of the destination device is confirmed by receipt of a certificate assigned to the destination device. A session key, used for encrypting the analog signals, is generated and exchanged between the source and destination devices. The source and destination devices each include a pseudo-random number generator driven by the session key. As part of the encryption process a false video signal is generated. The false video signal and R, G, B video signals are transmitted to the display device over four lines. The lines used to transmit the R, G, B and false video signals are periodically swapped as a function of the output of the pseudo random number generator to encrypt, e.g., scramble, the video signals. To avoid having to provide an additional line between the display adapter and the display device beyond those used in conventional displays, horizontal synchronization information is combined with, e.g., modulated on, one or more of the other signals transmitted to the display. The horizontal sync line is then used to convey one of the four video signals. The display device extracts the horizontal timing information from the received video signals and decrypts the signals using the output of its pseudo random number generator to reverse the scrambling process used to encrypt the transmitted video signals.
    • 描述用于保护未经授权的使用的受版权保护的信息(例如,视频信号)的方法和装置。 在通过接收到分配给目的地设备的证书来确认目的地设备的身份之后,加密的视频信号通过模拟信号线从源设备(例如,显示适配器)发送到显示设备,例如监视器。 用于加密模拟信号的会话密钥在源设备和目的设备之间生成和交换。 源和目的地设备每个都包括由会话密钥驱动的伪随机数发生器。 作为加密处理的一部分,生成假视频信号。 伪视频信号和R,G,B视频信号通过四行传输到显示设备。 用于传输R,G,B和假视频信号的线路作为伪随机数发生器的输出的周期性交换,以加密(例如)加扰视频信号。 为了避免在显示适配器和显示设备之间提供除了传统显示器中使用的显示适配器和显示设备之外的附加线路,水平同步信息与例如调制在传输到显示器的其它信号中的一个或多个相结合。 然后,水平同步线用于传送四个视频信号中的一个。 显示装置从接收到的视频信号中提取水平定时信息,并使用其伪随机数发生器的输出对信号进行解密,以反转用于加密所发送的视频信号的加扰处理。
    • 7. 发明申请
    • Methods and systems of protecting digital content
    • 保护数字内容的方法和系统
    • US20050273862A1
    • 2005-12-08
    • US11192348
    • 2005-07-28
    • Josh BenalohAndrew RosenGideon Yuval
    • Josh BenalohAndrew RosenGideon Yuval
    • G06F1/00G06F21/00G11B20/00H04L9/08H04L9/30H04L9/00
    • G06F21/10G06F2211/007G06F2221/0737G06F2221/0753G06F2221/2107G11B20/00086G11B20/0021H04L9/0825H04L2209/60H04L2209/606
    • Methods and systems are described that enable protection of digital content, such as movies and the like, by making pirated copies traceable back to a unique decryption key that was utilized to decrypt the originally encrypted content. The innovative advancements do not rely on post-distribution watermarking or fingerprinting techniques, and yet intrinsically link any unauthorized copies back to a unique cryptographic key or key collection that was used when the genuine copy was reproduced. In one embodiment, digital content is provided and comprises multiple partition sets, with each partition set comprising a first partition and at least one different version of the first partition. Each partition of each partition set is uniquely marked and encrypted with a different key. Individual unique key collections are then defined to contain, for each partition set, one key that was used to encrypt a partition from the partition set and no two key collections are identical. This means that each key collection can decrypt one unique version of the digital content. This unique version of the digital content is thus inextricably tied to the key collection that was utilized to decrypt the content. Each key collection is then encrypted with a different public key associated with one of multiple content players on which the digital content is to be played. Thus, each content player is inextricably associated with one key collection, and each key collection is inextricably associated with a unique version of the digital content. The digital content and one or more key collections can then be provided to the content players. When a content player decrypts its associated key collection and uses the key collection to decrypt the digital content, the version of the digital content that is decrypted points directly to the specific content-player that was authorized to decrypt it with that key collection.
    • 描述了通过使盗版拷贝可追溯到用于解密原始加密内容的唯一解密密钥来实现数字内容(例如电影等)的保护的方法和系统。 创新的进步不依赖于后期分发水印或指纹技术,而是将任何未经授权的副本本质上链接到复制真实副本时使用的唯一加密密钥或密钥集合。 在一个实施例中,提供数字内容并且包括多个分区集合,其中每个分区集包括第一分区和第一分区的至少一个不同版本。 每个分区集的每个分区都用不同的密钥进行唯一标记和加密。 然后,将各个唯一的密钥集合定义为包含每个分区集一个用于从分区集加密分区的密钥,并且两个密钥集合是相同的。 这意味着每个密钥集合可以解密数字内容的一个唯一版本。 因此,数字内容的独特版本与用于解密内容的密钥集合密不可分。 然后,利用与要在其上播放数字内容的多个内容播放器中的一个相关联的不同的公钥来加密每个密钥集合。 因此,每个内容播放器与一个密钥集合不可分割地相关联,并且每个密钥集合与数字内容的唯一版本不可分割地相关联。 然后可以向内容播放器提供数字内容和一个或多个密钥集合。 当内容播放器解密其关联的密钥集合并使用密钥集合来解密数字内容时,被解密的数字内容的版本直接指向被该密钥集合被授权解密的特定内容播放器。