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    Semi-public white-box cipher
    1.
    发明申请
    Semi-public white-box cipher 有权
    半公开白盒密码

    公开(公告)号：US20070086586A1

    公开(公告)日：2007-04-19

    申请号：US11251625

    申请日：2005-10-14

    申请人： Mariusz Jakubowski ,  Ramarathnam Venkatesan ,  Gideon Yuval ,  Yacov Yacobi ,  Matthew Cary

    发明人： Mariusz Jakubowski ,  Ramarathnam Venkatesan ,  Gideon Yuval ,  Yacov Yacobi ,  Matthew Cary

    IPC分类号： H04L9/28

    CPC分类号： H04L9/0662 ,  H04L2209/16 ,  H04L2209/24

    摘要： A computer-implemented system and method for configuring and operating a white-box cipher is disclosed. In one implementation, the system employs a method for configuring pseudorandom data derived from a key to perform key-scheduling functionality associated with rounds of the cipher. Additionally, the system employs a method for generating white-box executable code, wherein the code hides the pseudorandom data by incorporating it into mathematical operations performed during execution of the rounds. Accordingly, the cipher is suited for white-box applications managing digital rights, such as decoding audio, video and other content.

    摘要翻译： 公开了一种用于配置和操作白盒密码的计算机实现的系统和方法。 在一个实现中，系统采用一种用于配置从密钥导出的伪随机数据以执行与密码轮相关联的密钥调度功能的方法。 另外，该系统采用一种产生白盒可执行代码的方法，其中该代码通过将伪随机数据并入到执行循环期间执行的数学运算中来隐藏伪随机数据。 因此，该密码适用于管理数字权利的白盒应用，例如解码音频，视频和其他内容。

    System for protecting information content
    2.
    发明申请
    System for protecting information content 审中-公开
    保护信息内容的系统

    公开(公告)号：US20050195976A1

    公开(公告)日：2005-09-08

    申请号：US11083882

    申请日：2005-03-17

    申请人： Yacov Yacobi ,  Paul England ,  Gideon Yuval

    发明人： Yacov Yacobi ,  Paul England ,  Gideon Yuval

    IPC分类号： H04N7/169 ,  H04N7/01

    CPC分类号： H04N21/4402 ,  H04N7/1696 ,  H04N21/4122 ,  H04N21/43632 ,  H04N21/4367 ,  H04N21/4405 ,  H04N21/4408

    摘要： 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.

    摘要翻译： 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。

    Methods and apparatus for protecting signals transmitted between a source and destination device over multiple signal lines
    3.
    发明申请
    Methods and apparatus for protecting signals transmitted between a source and destination device over multiple signal lines 失效
    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

    公开(公告)号：US20050207577A1

    公开(公告)日：2005-09-22

    申请号：US11134111

    申请日：2005-05-20

    申请人： Paul England ,  Andrew Rosen ,  Yacov Yacobi ,  Gideon Yuval

    发明人： Paul England ,  Andrew Rosen ,  Yacov Yacobi ,  Gideon Yuval

    IPC分类号： H04N5/44 ,  H04N7/16 ,  H04N7/167 ,  H04N7/24

    CPC分类号： H04N9/641 ,  H04N5/765 ,  H04N5/775 ,  H04N5/913 ,  H04N7/163 ,  H04N7/1675 ,  H04N9/8042 ,  H04N21/2541 ,  H04N21/4122 ,  H04N21/4367 ,  H04N21/835 ,  H04N2005/91328 ,  H04N2005/91364

    摘要： 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.

    摘要翻译： 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。

    Methods and systems of protecting digital content
    6.
    发明申请
    Methods and systems of protecting digital content 有权
    保护数字内容的方法和系统

    公开(公告)号：US20050273862A1

    公开(公告)日：2005-12-08

    申请号：US11192348

    申请日：2005-07-28

    申请人： Josh Benaloh ,  Andrew Rosen ,  Gideon Yuval

    发明人： Josh Benaloh ,  Andrew Rosen ,  Gideon Yuval

    IPC分类号： G06F1/00 ,  G06F21/00 ,  G11B20/00 ,  H04L9/08 ,  H04L9/30 ,  H04L9/00

    CPC分类号： G06F21/10 ,  G06F2211/007 ,  G06F2221/0737 ,  G06F2221/0753 ,  G06F2221/2107 ,  G11B20/00086 ,  G11B20/0021 ,  H04L9/0825 ,  H04L2209/60 ,  H04L2209/606

    摘要： 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.

    摘要翻译： 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。

    Synchronized indicator light for secure connections
    7.
    发明申请
    Synchronized indicator light for secure connections 失效
    同步指示灯用于安全连接

    公开(公告)号：US20080125038A1

    公开(公告)日：2008-05-29

    申请号：US11512939

    申请日：2006-08-30

    申请人： Gideon Yuval

    发明人： Gideon Yuval

    IPC分类号： H04B7/00

    CPC分类号： H04M1/6066 ,  H04M1/7253 ,  H04W12/04 ,  H04W76/10 ,  H04W84/18

    摘要： A secure communication channel between first and second radio frequency communication devices is indicated by the synchronized indicators on each of the two devices. The indicator may be a light or speaker. After a secure channel is established, the indicators may be simultaneously operated so that a user may definitively and positively determine that the two devices are securely connected to each other. Any interloper devices would not be indicating on the same pattern and thereby be identified.

    摘要翻译： 第一和第二射频通信设备之间的安全通信信道由两个设备中的每一个上的同步指示符指示。 指示灯可以是灯或扬声器。 在建立安全通道之后，可以同时操作指示符，使得用户可以确定地和肯定地确定两个设备彼此牢固地连接。 任何中间设备都不会在相同的图案上指示，从而被识别。

    Exclusive Encryption
    8.
    发明申请
    Exclusive Encryption 有权
    独家加密

    公开(公告)号：US20070076881A1

    公开(公告)日：2007-04-05

    申请号：US11275186

    申请日：2005-12-16

    申请人： John Douceur ,  Josh Benaloh ,  Gideon Yuval ,  Atul Adya

    发明人： John Douceur ,  Josh Benaloh ,  Gideon Yuval ,  Atul Adya

    IPC分类号： H04K1/00

    CPC分类号： H04L63/0428 ,  G06F21/6209 ,  G06F21/6218 ,  G06F2221/2107

    摘要： An exclusive encryption system is established using multiple computing devices. The exclusive encryption system allows for the exclusion of certain plaintext (e.g., by one of the computing devices) and ciphertext (e.g., by another of the computing devices) while at the same time maintaining the privacy created by the encryption (e.g., so the other computing device cannot see the plaintext). The exclusive encryption system may be implemented as part of a serverless distributed file system with directory entries (e.g., file names or folder names) being the plaintext, or alternatively as part of other systems.

    摘要翻译： 使用多个计算设备建立专用加密系统。 专用加密系统允许排除某些明文（例如，由计算设备之一）和密文（例如，由计算设备中的另一个），同时保持由加密产生的隐私（例如，因此， 其他计算设备看不到明文）。 独占加密系统可以被实现为具有目录条目（例如，文件名或文件夹名称）为明文，或作为其他系统的一部分的无服务器分布式文件系统的一部分。

    Efficient perceptual/physical color space conversion
    9.
    发明申请
    Efficient perceptual/physical color space conversion 有权

    公开(公告)号：US20050168481A1

    公开(公告)日：2005-08-04

    申请号：US11093636

    申请日：2005-03-29

    申请人： Nicholas Wilt ,  Gideon Yuval ,  Michael Stokes

    发明人： Nicholas Wilt ,  Gideon Yuval ,  Michael Stokes

    IPC分类号： H04N1/60 ,  G09G5/02

    CPC分类号： H04N1/6016

    摘要： An imaging or other sensory reproduction system efficiently converts image or other sensory data between a perceptual color space (e.g., the sRGB color space) and a physical color space (unity gamma) or other perceptual/physical sensory models that are related by an expression involving a computationally expensive exponential function. The imaging system calculates exponential functions that can be composed from computationally inexpensive operations, such as square root, square, reciprocal, as well as multiplications and/or additions and subtractions. These computationally less expensive functions are then combined, such as in a weighted and/or offset mean, summation or difference to approximate the computationally expensive exponential function. The imaging system evaluates the expression using the approximation to efficiently yield the converted image data. The efficient conversion between perceptual and physical color spaces allows operations, such as blending and anti-aliasing, to be performed in the physical color space before display of a perceptual color space image.