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    • 2. 发明授权
    • Method and system for filtering spoofed packets in a network
    • 在网络中过滤欺骗性包的方法和系统
    • US07360245B1
    • 2008-04-15
    • US09907861
    • 2001-07-18
    • Viyyokaran R. RamachandranManoj ChoudharyHonnuduke S. Madhusudhana
    • Viyyokaran R. RamachandranManoj ChoudharyHonnuduke S. Madhusudhana
    • G06F17/00H04L9/00
    • H04L63/1466H04L63/1408
    • A method and system is disclosed for preventing an address spoofing based attack from a private network. The private network has at least one host and at least one router connected therein for transporting at least one packet. An anti-spoofing filter is implemented in each interface of every router. When a packet is received on the interface, the filter determines whether the packet is address spoofed by comparing its source physical address derived from the received packet with expected physical address derived from interface IP address, a subnet mask of the interface, an ARP cache of the interface and a list of physical addresses of neighboring routers formed a priori If the packet is determined to be address spoofed, the received packet is discarded by the filter on the interface.
    • 公开了一种用于防止来自专用网络的基于地址欺骗的攻击的方法和系统。 专用网络具有至少一个主机和连接在其中的至少一个路由器,用于传送至少一个分组。 每个路由器的每个接口都实现了防欺骗过滤器。 当在接口上收到数据包时,过滤器通过将从接收到的数据包导出的源物理地址与从接口IP地址导出的预期物理地址,接口的子网掩码,接口的ARP缓存, 接口和相邻路由器的物理地址列表是先验的。如果分组被确定为地址欺骗,则接收到的报文被接口上的过滤器丢弃。
    • 3. 发明授权
    • Method and system for enhancing network security using a multilateral authorization mechanism
    • 使用多边授权机制增强网络安全的方法和系统
    • US07136489B1
    • 2006-11-14
    • US10242176
    • 2002-09-12
    • Honnuduke S. MadhusudhanaShishir NagarajAridaman Tripathi
    • Honnuduke S. MadhusudhanaShishir NagarajAridaman Tripathi
    • H04L9/00G06F7/04
    • H04L9/085H04L9/302H04L9/3218H04L2209/56
    • A method and system is provided for implementing a multilateral authorization quorum in a computer network. The authorization quorum comprises a total number of stakeholders out of which a threshold number of stakeholders can provide a multilateral authorization. To implement this multilateral authorization quorum, one or more access sets is first determined, each containing the threshold number of stakeholders. Since the stakeholders split a quorum private key, the shares of the quorum private key for each stakeholder in all access sets are determined. The shares of the private key held by the stakeholders in any one access set add up to a number directly related to the private key. One or more secret keys of the stakeholders are further determined for each access set. One or more polynomials for the access sets are then generated by using the shares of the private key and the secret keys thereof, wherein the private key is thus split among the stakeholders of the multilateral authorization quorum. Such a multilateral authorization quorum is ready to be used for making approvals for predetermined transactions.
    • 提供了一种在计算机网络中实现多边授权仲裁的方法和系统。 授权法定人数包括利益相关者的总数,其中许多利益攸关方可以提供多边授权。 为了实施这一多边授权法定人数,首先确定一个或多个访问集,每一个都包含利益相关者的门槛数。 由于利益相关者分摊了一个法定私钥,因此确定了所有访问集中每个利益相关者的法定人数私钥的份额。 任何一个访问集中的利益相关者持有的私钥的份额加起与私钥直接相关的数字。 每个访问集合进一步确定利益相关者的一个或多个秘密密钥。 然后通过使用私钥的共享及其秘密密钥来生成用于访问集的一个或多个多项式,其中私钥因此在多边授权仲裁的利益相关者之间分配。 这样的多边授权法定人数准备用于批准预定交易。
    • 7. 发明授权
    • System and method for numerically evaluating thermal comfort inside an enclosure
    • 用于数值评估外壳内热舒适性的系统和方法
    • US08407032B2
    • 2013-03-26
    • US12797613
    • 2010-06-10
    • Punit TiwariMadhusudhana ReddyAndreas Wick
    • Punit TiwariMadhusudhana ReddyAndreas Wick
    • G06G7/48
    • G01W1/17G06F17/5009G06F17/5095G06F2217/16G06F2217/80
    • A system and method for assessing thermal comfort in an enclosure is disclosed. In one embodiment, a method includes performing a numerical analysis on a calibration enclosure including a thermal manikin in a uniform thermal environment to obtain a surface heat transfer coefficient (hcal) for each body part of the thermal manikin. The method also includes performing a numerical analysis on an enclosure including one or more thermal manikins in a non-uniform thermal environment to obtain a total heat flux (q″T) for each body part of the one or more thermal manikins. The method further includes computing an equivalent temperature (teq) of each body part of the one or more thermal manikins using the obtained associated hcal, the obtained associated q″T, and an associated surface temperature of the body part. Furthermore, the method includes evaluating thermal comfort in the enclosure based on each computed teq.
    • 公开了一种用于评估外壳中的热舒适性的系统和方法。 在一个实施例中,一种方法包括在均匀热环境中对包括热人体模型的校准外壳执行数值分析,以获得热人体模型的每个身体部分的表面传热系数(hcal)。 该方法还包括对包含一个或多个热人体模型的外壳在不均匀的热环境中进行数值分析以获得一个或多个热人体模型的每个身体部分的总热通量(q“T)。 该方法还包括使用获得的相关联的hcal,获得的相关联的q“T和身体部分的相关联的表面温度来计算一个或多个热人体模型的每个身体部分的等效温度(teq)。 此外,该方法包括基于每个计算的teq评估外壳中的热舒适度。
    • 9. 发明授权
    • Methods and systems for file replication utilizing differences between versions of files
    • 文件复制的方法和系统利用文件版本之间的差异
    • US07844580B2
    • 2010-11-30
    • US11891962
    • 2007-08-14
    • Piyush Kumar SrivastavaMadhusudhana Honnuduke Srinivasa Murthy
    • Piyush Kumar SrivastavaMadhusudhana Honnuduke Srinivasa Murthy
    • G06F17/30
    • G06F17/30575G06F17/30215Y10S707/99945Y10S707/99953
    • Methods and systems for efficient file replication are provided. In some embodiments, one or more coarse signatures for blocks in a base file are compared with those coarse signatures for blocks of a revised file, until a match is found. A fine signature is then generated for the matching block of the revised file and compared to a fine signature of the base file. Thus, fine signatures are not computed unless a coarse signature match has been found, thereby minimizing unneeded time-consuming fine signature calculations. Methods are also provided for determining whether to initiate a delta file generation algorithm, or whether to utilize a more efficient replication method, based upon system and/or file parameters. In accordance with additional embodiments, the lengths of valid data on physical blocks are obtained from physical block mappings for the files, and these lengths and mappings are utilized for delta file generation, to minimize unnecessary signature computations.
    • 提供了有效文件复制的方法和系统。 在一些实施例中,将用于基本文件中的块的一个或多个粗略签名与用于修改文件的块的那些粗略签名进行比较,直到找到匹配。 然后为修改后的文件的匹配块生成精细签名,并与基本文件的精细签名进行比较。 因此,除非已经找到粗略的签名匹配,否则不会计算精细签名,从而最小化不需要的耗时的精细签名计算。 还提供了用于基于系统和/或文件参数来确定是否启动增量文件生成算法或者是否利用更有效的复制方法的方法。 根据另外的实施例,从文件的物理块映射获得物理块上的有效数据的长度,并且这些长度和映射用于增量文件生成,以最小化不必要的签名计算。