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    • 132. 发明公开
    • VERIFIABLE SECRET SHUFFLES AND THEIR APPLICATION TO ELECTRONIC VOTING
    • 视察密重排和电子选项应用程序
    • EP1374188A2
    • 2004-01-02
    • EP02719353.1
    • 2002-03-25
    • Votehere Inc.
    • NEFF, Andrew C.
    • G07C13/00G06F17/60
    • H04L9/3218H04L9/0825H04L9/14H04L9/3066H04L9/321H04L9/3252H04L2209/42H04L2209/463H04L2209/56
    • We present a mathematical construct which provides a cryptographic protocol to (verifiably shuffle) a sequence of (k) modular integers, and discuss its application to secure, universally verifiable, multi-authority election schemes. The output of the shuffle operation is another sequence of (k) modular integers, each of which is the same secret power of a corresponding input element, but the order of elements in the output is kept secret. Though it is a trivial matter for the 'shuffler' (who chooses the permutation of the elements to be applied) to compute the output from the input, the construction is important because it provides a linear size proof of correctness for the output sequence (i.e. a proof that it is of the form claimed) that can be checked by one or more arbitrary verifiers. The protocol is shown to be honest-verifier zeroknowledge in a special case, and is computational zeroknowledge in general. On the way to the final result, we also construct a generalization of the well known Chaum-Pedersen protocol for knowledge of discrete logarithm equality ([3], [2]). In fact, the generalization specializes (exactly) to the Chaum-Pedersen protocol in the case (k)=2. This result may be of interest on its own. An application to electronic voting is given that matches the features of the best current protocols with significant efficiency improvements. An alternative application to electronic voting is also given that introduces an entirely new paradigm for achieving (Universally Verifiable) elections.
    • 139. 发明公开
    • FRAME MATERIAL OF CONVEYOR SYSTEM, RUNNING FRAME DEVICE USING THE FRAME MATERIAL, AND RUNNING RAIL MOUNTING STRUCTURE OF CONVEYOR SYSTEM
    • LAUFRAHMENANDNDNFÜREINFÖRDERSYSTEM
    • EP1273536A1
    • 2003-01-08
    • EP01919913.2
    • 2001-04-12
    • Yamakyu Chain Co., Ltd.
    • TERAJIMA, AtusiKOEDA, MotoyaFUKAZAWA, SeiichiKOBAYASHI, KazuyukiKATO, Fukukazu
    • B65G21/06B65G21/20B65G21/22
    • B65G21/22B65G21/06B65G21/2072
    • There is provided a metallic frame member usable in a traveling frame assembly, guide rail or receiving rail used in a conveyor system. It includes a rear section extending longitudinally of the frame member (3a), a pair of inclined sections (3b) bent in directions in which they extend towards each other from lateral ends of the rear section (3a), a pair of front sections (3c) bent in directions in which they extend from lateral ends of the pair of inclined sections (3b) generally in parallel to the rear section and a pair of side sections (3d) bent from lateral ends of the front sections (3c) towards the rear section (3a), the rear section (3a) and pair of inclined sections (3b) defining together a longitudinal concavity having a generally C-like vertical cross-sectional profile, and each of the side sections (3d) being folded back at the free end inside or outside thereof to form a folded portion (5). Thus, even in case each of the rear section, inclined sections, front sections and side sections is formed relatively thin, the frame member as whole can have a great strength and rigidity and thus the frame member can be a lightweight, high precision-worked one. In addition, since the frame member is simple in construction, suitable for mass production and inexpensive, so it is optimum for use to form a traveling frame assembly, guide rail, receiving rail, etc. used in the conveyor systems.
    • 提供了可用于传送系统中使用的行走架组件,导轨或接收轨道中的金属框架构件。 它包括一个沿着框架件(3a)纵向延伸的后部分,一对倾斜部分(3b),它们沿着从后部(3a)的横向端向彼此延伸的方向弯曲,一对前部( 3c)沿着与所述一对平行于所述后部的所述一对倾斜部分(3b)的横向端部延伸的方向弯曲;以及一对侧部部分(3d),其从所述前部部分(3c)的侧端朝向 后部(3a),后部(3a)和一对倾斜部分(3b),所述一对倾斜部分(3b)限定一起具有大致C形垂直横截面轮廓的纵向凹部,并且每个侧部(3d) 其内部或外部的自由端形成折叠部分(5)。 因此,即使在后部,倾斜部,前部和侧部中的每一个形成得相对较薄的情况下,框架构件也可以具有很大的强度和刚度,因此框架构件可以是轻质的,高精度加工的 一。 此外,由于框架构造简单,适合批量生产并且便宜,所以最好用于形成用于输送机系统中的行走架组件,导轨,接收导轨等。