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    KEY GENERATION USING MULTIPLE SETS OF SECRET SHARES
    94.
    发明公开
    KEY GENERATION USING MULTIPLE SETS OF SECRET SHARES 有权
    密钥生成使用私有股份多套

    公开(公告)号：EP2721765A1

    公开(公告)日：2014-04-23

    申请号：EP12720645.6

    申请日：2012-04-23

    申请人： NDS Limited

    发明人： KIPNIS, Aviad ,  HIBSHOOSH, Eliphaz

    IPC分类号： H04L9/08

    CPC分类号： H04L9/0816 ,  H04L9/0833 ,  H04L9/085 ,  H04L9/0869

    摘要： A cryptographic method, including generating, using a meta-secret, a first plurality of cryptographic keys, each cryptographic key associated with a respective key identifier, creating, using the meta-secret, a second plurality of sets of secret-shares, which are capable, by combining all the secrets-shares in any one of the sets together with the respective key identifier, of generating the associated cryptographic key, and performing cryptographic operations using the cryptographic keys. Related methods and apparatus are also included.

    Security within integrated circuits
    97.
    发明公开
    Security within integrated circuits 审中-公开
    Sicherheit in integrierten Schaltkreisen

    公开(公告)号：EP2662796A2

    公开(公告)日：2013-11-13

    申请号：EP13179480.2

    申请日：2009-05-21

    申请人： NDS LIMITED

    发明人： Shen-Orr, Chaim ,  Shkedy, Zvi ,  Elbaum, Reuven ,  Shlomovich, Yonatan ,  Shapiro, Yiga ,  Belenky, Yaacov ,  Summer, Reuben ,  Mantin, Itsik

    IPC分类号： G06F21/00 ,  G06F21/79

    CPC分类号： G06F21/60 ,  G06F21/79 ,  H04L9/003

    摘要： A method for hindering detection of secret information unintentionally leaked from a secret held in a memory unit, the method comprising: storing the secret information in a location within the memory unit; episodically re-deriving the secret information; and storing the re-derived secret information at the location within the memory unit, wherein the episodic re-deriving of the secret information causes an episodic change of physical contents of the memory unit holding the secret information, thereby causing the secret information unintentionally leaked from the memory unit to vary over time causing any detector of leaked information requiring long collection times to receive an average of the leaked information, the average of the leaked information not revealing the leaked information.

    摘要翻译： 一种用于阻止从存储单元中保存的秘密无意中泄露的秘密信息的检测方法，所述方法包括：将所述秘密信息存储在所述存储器单元内的位置; 偶然地重新获得秘密信息; 以及将所述重新导出的秘密信息存储在所述存储单元内的位置处，其中所述秘密信息的情节重新导出导致保存所述秘密信息的所述存储单元的物理内容的情节改变，从而导致所述秘密信息无意地从 存储器单元随时间变化，导致任何泄漏信息的检测器需要较长的收集时间来接收泄漏信息的平均值，泄露的信息的平均值不会泄露泄露的信息。

    OBFUSCATED HARDWARE MULTI-THREADING
    99.
    发明公开
    OBFUSCATED HARDWARE MULTI-THREADING 有权
    VERSCHLEIERTES HARDWARE-MULTITHREADING

    公开(公告)号：EP2628122A1

    公开(公告)日：2013-08-21

    申请号：EP11808936.6

    申请日：2011-11-14

    申请人： NDS Limited

    发明人： DARMON, David ,  KALUZHNY, Uri

    IPC分类号： G06F21/00 ,  G06F9/38

    CPC分类号： G06F9/3867 ,  G06F21/75 ,  G06F21/755

    摘要： Obfuscating a multi-threaded computer program is carried out using an instruction pipeline in a computer processor by streaming first instructions of a first thread of a multi-threaded computer application program into the pipeline, the first instructions entering the pipeline at the fetch stage, detecting a stall signal indicative of a stall condition in the pipeline, and responsively to the stall signal injecting second instructions of a second thread of the multi-threaded computer application program into the pipeline. The injected second instructions enter the pipeline at an injection stage that is disposed downstream from the fetch stage up to and including the register stage for processing therein. The stall condition exists at one of the stages that is located upstream from the injection stage.. Figure (2)