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    Index-based coding with a pseudo-random source
    1.
    发明授权
    Index-based coding with a pseudo-random source 有权
    具有伪随机源的基于索引的编码

    公开(公告)号：US08811615B2

    公开(公告)日：2014-08-19

    申请号：US12850693

    申请日：2010-08-05

    Applicant: Meng-Day Yu ,  Srinivas Devadas

    Inventor： Meng-Day Yu ,  Srinivas Devadas

    IPC: H04L9/00

    CPC classification number: G06F11/10 ,  H04L9/0662 ,  H04L9/3278 ,  H04L2209/34

    Abstract: Outputs from at least one pseudo-random source are used to encode hidden value. The hidden value is encoded using index based quantities, for example, based on numerically ordering a sequence of outputs from pseudo-random source(s). In some examples, the numerical ordering of re-generated device-specific quantities is used to re-generate the hidden value, without necessarily requiring additional error correction mechanisms. Information leak may be reduced by constructing system whose “syndrome” helper bits are random, as measured, for example, by NIST's Statistical Tests for Randomness In some examples, index based coding provides coding gain that exponentially reduces total error correction code complexity, resulting in efficiently realizable PRS-based key generation systems. In some examples, index based coding allows noisy PRS to be robust across conditions where conventional error correction code cannot error correct.

    Abstract translation: 来自至少一个伪随机源的输出用于对隐藏值进行编码。 隐藏值使用基于索引的量来编码，例如，基于从伪随机源的输出序列的数值排序。 在一些示例中，重新生成的设备特定量的数值排序用于重新生成隐藏值，而不需要额外的纠错机制。 信息泄漏可以通过构建其“综合征”辅助位是随机的系统来减少，例如，通过NIST的随机统计测试来测量。在一些示例中，基于索引的编码提供指数地降低总纠错码复杂度的编码增益，导致 有效实现的基于PRS的密钥生成系统。 在一些示例中，基于索引的编码允许有噪声的PRS在常规纠错码不能正确错误的情况下是稳健的。

    Cryptographic security using fuzzy credentials for device and server communications
    2.
    发明授权
    Cryptographic security using fuzzy credentials for device and server communications 有权
    加密安全性使用模糊凭据进行设备和服务器通信

    公开(公告)号：US08762723B2

    公开(公告)日：2014-06-24

    申请号：US13543295

    申请日：2012-07-06

    Applicant: Meng-Day Yu ,  Srinivas Devadas ,  David M'Raihi ,  Eric Duprat

    Inventor： Meng-Day Yu ,  Srinivas Devadas ,  David M'Raihi ,  Eric Duprat

    IPC: G06F21/00

    CPC classification number: H04L9/3278 ,  H04L9/0844 ,  H04L9/0866

    Abstract: An approach to cryptographic security uses a “fuzzy” credential, in contrast to a “hard” credential, to eliminate cryptographic algorithmic repeatability on a device that may be subject to physical attacks. By eliminating repeatability performed at an algorithmic (e.g., gate or software) level, a device inherently lacks one of the fundamental setup assumptions associated with certain classes of side channel, fault injection, timing, and related attacks, thus helps to protect the system against such attacks while preserving the cryptographic security of the system.

    Abstract translation: 加密安全性的方法使用“模糊”凭据，与“硬”证书相反，以消除可能遭受物理攻击的设备上的加密算法重复性。 通过消除在算法（例如门或软件）级别执行的重复性，设备固有地缺乏与某些类别的侧信道，故障注入，定时和相关攻击相关联的基本设置假设之一，从而有助于保护系统免受 这种攻击同时保留了系统的加密安全性。

    SOFT MESSAGE SIGNING
    3.
    发明申请
    SOFT MESSAGE SIGNING 有权
    软消息签名

    公开(公告)号：US20120290845A1

    公开(公告)日：2012-11-15

    申请号：US13103451

    申请日：2011-05-09

    Applicant: William Henry Bares ,  Srinivas Devadas ,  Vivek Khandelwal ,  Zdenek Paral ,  Richard Sowell ,  Tonghang Zhou

    Inventor： William Henry Bares ,  Srinivas Devadas ,  Vivek Khandelwal ,  Zdenek Paral ,  Richard Sowell ,  Tonghang Zhou

    IPC: H04L9/32

    CPC classification number: H04L9/3278 ,  H04L9/3247 ,  H04L2209/805

    Abstract: A message is signed using a PUF without having to exactly regenerate a cryptographic key. Another party that shares information about the PUF is able to verify the signature to a high degree of accuracy (i.e., high probability of rejection of a forged signature and a low probably of false rejection of a true signature). In some examples, the information shared by a recipient of a message signature includes a parametric model of operational characteristics of the PUF used to form the signature.

    Abstract translation: 使用PUF签名消息，而不必完全重新生成加密密钥。 共享关于PUF的信息的另一方能够以高精确度验证签名（即，拒绝伪造签名的可能性很高，并且可能是真正签名的错误拒绝）。 在一些示例中，消息签名的接收方共享的信息包括用于形成签名的PUF的操作特征的参数模型。

    Signal Generator Based Device Security
    6.
    发明申请
    Signal Generator Based Device Security 有权
    基于信号发生器的设备安全

    公开(公告)号：US20070250938A1

    公开(公告)日：2007-10-25

    申请号：US11626639

    申请日：2007-01-24

    Applicant: Gookwon Suh ,  Srinivas Devadas

    Inventor： Gookwon Suh ,  Srinivas Devadas

    IPC: G08B29/00

    CPC classification number: G06F21/31 ,  G06F21/73 ,  G06F2221/2129 ,  H04L9/0866 ,  H04L2209/12

    Abstract: Subsets of multiple signal generator circuits embodied in a device are selected, and then a volatile value for the device is generated from the selected subsets. The volatile value may be used for authentication of the device and/or for cryptographic procedures performed on the device. The signal generator circuits may each comprise an oscillator circuit, and the selection of the subsets may be according to a comparison of the outputs of the subsets of circuits, for example, according to a comparison of output oscillation frequencies.

    Abstract translation: 选择体现在设备中的多个信号发生器电路的子集，然后从所选择的子集产生装置的易失性值。 易失性值可以用于设备的认证和/或用于在设备上执行的密码过程。 信号发生器电路可以各自包括振荡器电路，并且子集的选择可以根据电路子集的输出的比较，例如根据输出振荡频率的比较。

    Method and apparatus for bandwidth guarantee and overload protection in a network switch
    10.
    发明授权
    Method and apparatus for bandwidth guarantee and overload protection in a network switch 有权
    网络交换机带宽保障和过载保护的方法和装置

    公开(公告)号：US07724760B2

    公开(公告)日：2010-05-25

    申请号：US10639269

    申请日：2003-08-12

    Applicant: Hari Balakrishnan ,  Srinivas Devadas ,  Arvind Mithal

    Inventor： Hari Balakrishnan ,  Srinivas Devadas ,  Arvind Mithal

    IPC: H04L12/56

    CPC classification number: H04L47/10 ,  H04L47/24 ,  H04L47/39 ,  H04L47/50 ,  H04L47/52 ,  H04L47/6215 ,  H04L47/6255 ,  H04L49/101 ,  H04L49/254 ,  H04L49/30 ,  H04L49/3045

    Abstract: A method for selecting a queue for service across a shared link. The method includes classifying each queue from a group of queues within a plurality of ingresses into one tier of a number “N” of tiers. The number “N” is greater than or equal to 2. Information about allocated bandwidth is used to classify at least some of the queues into the tiers. Each tier is assigned a different priority. The method also includes matching queues to available egresses by matching queues classified within tiers with higher priorities before matching queues classified within tiers with lower priorities.

    Abstract translation: 一种用于通过共享链路选择服务队列的方法。 该方法包括将来自多个入口内的一组队列中的每个队列分成层数“N”的一层。 数字“N”大于或等于2.关于分配的带宽的信息用于将至少一些队列分类到层级中。 每个层都有不同的优先级。 该方法还包括通过匹配在具有较低优先级的层级中分类的队列之前匹配在具有较高优先级的层级中分类的队列来匹配队列到可用出口。

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