ID 原文 译文
46266 并基于该算法结合对偶 LWE 算法完成 HIBE 方案构造。 Finally, the new ex-traction algorithm and the Dual-LWE algorithm was integrated to complete the scheme.
46267 对比分析表明，所提方案的效率较同类方案在系统建立和用户密钥提取阶段均有提升，陷门尺寸与系统分级深度仅成线性增长关系，且优化后的原像采样算法一定程度上可解决 MP12 陷门派生算法在陷门派生后高斯参数增长的问题。 Compared with the similar schemes, the efficiency of the proposed scheme was improved in system establishment and user’s private key extraction stage, the trapdoor size grows only linearly with the system hierarchical depth, and the improved preimage sample algorithm partly solves the Gaussian parameter increasing problem induced by MP12 trapdoor delegation.
46268 在标准模型下，方案安全性归约至判定性 LWE 问题的难解性，并包含严格的安全性证明。 The security of the proposed scheme strictly reduces to the hardness of decisional learning with errors problem in the standard model.
46269 针对非理想信道状态信息（CSI，channel state information）下的多小区下行时分复用（TDD，time division multiplexing）大规模多入多出（MIMO，multiple-input multiple-output）系统，研究了基于服务质量（QoS，quality of service）的发射功率和小区间泄露功率最小的波束成形问题。 In view of multi cell downlink time division multiplexing (TDD) massive multiple-input multiple-output(MIMO) systems which had imperfect channel state information (CSI), the beam-forming problem that minimized the total transmit power and signal leakage power based on quality of service (QoS) was studied.
46270 首先，将目标问题近似成凸优化问题， First, the objective problem was approximated as a standard convex optimization problem.
46271 然后，利用上下行链路对偶性，提出一种内外层迭代算法。 Then, by using the duality of uplink and downlink, an inner and outer layer iterative algorithm was proposed.
46272 数值分析结果表明，所提算法与其他几种典型的多小区波束成形算法相比，在算法复杂度和能量效率性能指标方面具有明显优势。 Numerical results show that, comparing with other typical down link multicell massive MIMO beam-forming algorithms, the proposed algorithm has obvious advantages in terms of complexity and energy efficiency.
46273 针对当前车联网中匿名认证的安全性与效率问题，提出一种基于非线性对的车联网无证书批量匿名认证方案。 To solve the problem of security and efficiency of anonymous authentication in vehicular ad hoc network, a pairing-free certificateless batch anonymous authentication scheme was proposed.
46274 通过可信中心与车辆协同生成公私钥对和假名，摆脱了系统安全对防篡改装置的依赖。 The public and private keys and pseu-donyms were jointly generated by the trusted third party and vehicle, so the system security didn't depend on the tamper device.
46275 分析表明，该方案能够实现可认证性、匿名性、可追踪性、不可链接性、前向与后向安全性等多种安全性能， The scheme can realize authentication, anonymity, traceability, unforgeability, forward or backward security, and so on.