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452 条记录 (耗时 0.019 秒)

    NETWORK SECURITY SYSTEM
    51.
    发明公开
    NETWORK SECURITY SYSTEM 有权
    保障体系网络

    公开(公告)号：EP1839405A1

    公开(公告)日：2007-10-03

    申请号：EP06728315.0

    申请日：2006-05-01

    申请人： NDS LIMITED

    发明人： GEYZEL, Zeev ,  DORRENDORF, Leo

    IPC分类号： H04L9/00 ,  H04L9/32 ,  H04K1/00

    CPC分类号： H04L9/085 ,  H04L2209/60

    摘要： A system for restricting access to encrypted content stored in a consuming device (12) which is part of a network (10) including other devices (14), the system including a content storage medium to store the encrypted content, a secret-share distribution module to distribute secret-shares to the other devices (14), a secret-share receive module to receive the secret-shares from the other devices (14), a secret reconstruction module to form a content decryption input from the secret-shares received by the secret-share receive module, a content decryption module to receive the encrypted content from the content storage medium and the content decryption input from the secret reconstruction module and decrypt the encrypted content using the content decryption input thereby rendering decrypted content, and a content consumer to use the decrypted content, wherein the secret shares distributed to the other devices (14) are in an encrypted format for decryption by the consuming device (12) or the other devices (14).

    EFFICIENT AND SECURE RENEWAL OF ENTITLEMENTS
    52.
    发明公开
    EFFICIENT AND SECURE RENEWAL OF ENTITLEMENTS 有权
    津贴高效，安全的续期

    公开(公告)号：EP1808017A1

    公开(公告)日：2007-07-18

    申请号：EP04799307.6

    申请日：2004-11-01

    申请人： NDS LIMITED

    发明人： WAISBARD, Erez ,  SELLA, Yaron

    IPC分类号： H04N7/167

    CPC分类号： H04N7/1675 ,  H04N21/26606 ,  H04N21/4181 ,  H04N21/4623 ,  H04N21/4627

    摘要： A method for granting a grace period entitlement, the method comprising receiving a grace period entitlement message, establishing whether a grace period flag indicates that a grace period may be granted, granting a grace period to an expired entitlement based, at least in part, on the grace period entitlement message, only if the grace period flag is 'off', and setting the grace period flag to indicate that the grace period has been granted. Related methods and apparatus are also described.

    SYSTEM FOR PROXIMITY DETERMINATION
    53.
    发明公开
    SYSTEM FOR PROXIMITY DETERMINATION 审中-公开
    近邻确定系统

    公开(公告)号：EP1761861A1

    公开(公告)日：2007-03-14

    申请号：EP05740622.5

    申请日：2005-05-11

    申请人： NDS LIMITED

    发明人： SHEN-ORR, Chaim, D. ,  HIBSHOOSH, Eliphaz ,  BELENKY, Yaacov

    IPC分类号： G06F15/00

    CPC分类号： H04L63/0823 ,  G06F21/33 ,  G06F2221/2103 ,  G06F2221/2111 ,  G06F2221/2129 ,  H04L63/0428 ,  H04L63/06 ,  H04W12/02 ,  H04W12/04 ,  H04W12/06 ,  H04W24/00

    摘要： A method for determining proximity between a first device and a second device, the method comprising providing a first device storing a first device private key, the first device having an associated secure first device certificate storing secured information, the secured information comprising a first device public key corresponding to the first device private key, providing a second device storing a second device private key, the second device having an associated secure second device certificate storing secured information, the secured information comprising a second device public key corresponding to the second device private key, and a second device processing delay, providing a copy of the second device certificate to the first device, establishing a secure authenticated channel between the first device and the second device, sending a proximity challenge from the first device to the second device, the proximity challenge including a numeric challenge value, receiving the proximity challenge at the second device, processing the proximity challenge at the second device to produce the response to the proximity challenge, and sending the response to the proximity challenge from the second device to the first device, receiving the response to the proximity challenge at the first device, and performing the following at the first device verifying, at the first device, that the response to the proximity challenge is legitimate, determining a gross time between sending the proximity challenge and receiving the response to the proximity challenge, subtracting the second device processing delay from the gross time to produce a net response time, and comparing the net response time to a first threshold and determining whether the first device and the second device are in proximity based on a result of the comparing. Related methods and apparatus are also described.

    摘要翻译： 一种用于确定第一设备和第二设备之间的接近度的方法，所述方法包括提供存储第一设备私钥的第一设备，所述第一设备具有存储安全信息的关联安全第一设备证书，所述安全信息包括第一设备公开 提供存储第二设备私钥的第二设备，所述第二设备具有存储安全信息的相关联的安全第二设备证书，所述安全信息包括对应于所述第二设备私钥的第二设备公钥 以及第二设备处理延迟，向第一设备提供第二设备证书的副本，在第一设备和第二设备之间建立安全认证信道，从第一设备向第二设备发送接近度挑战，接近度 挑战包括数字挑战值，接收proximi 在第二设备处处理接近度挑战以产生对接近度挑战的响应，并且将响应发送到第二设备到第一设备的接近度挑战;在第二设备处接收对接近度挑战的响应 并且在所述第一设备处执行以下操作：在所述第一设备处验证对所述接近度挑战的所述响应是合法的，确定发送所述接近度挑战与接收对所述接近度挑战的所述响应之间的总时间，将所述第二设备 处理来自总时间的延迟以产生净响应时间，并且将净响应时间与第一阈值进行比较，以及基于比较的结果确定第一设备和第二设备是否接近。 还描述了相关的方法和装置。

    DIGITAL RIGHTS MANAGEMENT SYSTEM
    54.
    发明公开
    DIGITAL RIGHTS MANAGEMENT SYSTEM 审中-公开
    系统管理数字权利的

    公开(公告)号：EP1759477A2

    公开(公告)日：2007-03-07

    申请号：EP05747258.1

    申请日：2005-06-02

    申请人： NDS LIMITED

    发明人： BOGOT, Carmi ,  SOLOW, Hillel

    IPC分类号： H04L9/00

    CPC分类号： H04M1/72522 ,  G06F21/10

    摘要： A digital rights management system (figure 1) for a mobile telephone (10), including a controlled content disk (16) to store content in an encrypted format, and a mobile telephone processor (18) to run a plurality of mobile telephone applications (36, 38, 40) and a secure device driver (22) thereon, the mobile telephone processor (18) being operationally associated with the controlled content disk (16), the mobile telephone applications (36, 38, 40) being unable to decrypt content from the encrypted format, the secure device driver (22) having a receiving module (24) to receive a request from one of the mobile telephone applications (36, 38, 40) to access the content, a validation module (26) to validate the request, and a transport module (28) to substantially directly transfer the content to the one mobile telephone application, contingent upon a positve result of the validating of the validation module (26). Related apparatus and methods are also described.

    SECURE CLOCK
    59.
    发明公开
    SECURE CLOCK 有权
    安全的时间参考

    公开(公告)号：EP1514166A1

    公开(公告)日：2005-03-16

    申请号：EP03816005.7

    申请日：2003-04-15

    申请人： NDS Limited

    发明人： SMITH, Perry

    IPC分类号： G06F1/00

    CPC分类号： G06F21/725

    摘要： Apparatus comprising a secure time element comprising a timing device that outputs to a plurality of delay devices, wherein the delay devices have characteristic delay times which are alterable as a result of a tampering attempt to tamper therewith, and wherein a characteristic delay time of one of the delay devices changes differently from another one of the delay devices as a result of the tampering attempt.