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基于SMA/ECC的新型自复位框架节点抗震性能试验研究
形状记忆合金 高延性水泥基复合材料 自复位 框架节点
2021/4/7
为了提高框架节点塑性铰区损伤自修复自复位能力，减小结构的残余变形，实现框架结构震后结构功能的快速恢复，文章采用超弹性SMA筋和超高韧性纤维增强水泥基复合材料(ECC)增强RC框架节点的抗震性能。设计制作了5个1/2缩尺比例框架节点，其中2个为考虑了梁端塑性铰区不同长度的SMA增强ECC节点模型，3个为对比节点模型，即普通混凝土节点、ECC增强混凝土节点和SMA增强混凝土节点。在新型SMA/ECC节...
高强不锈钢绞线网与ECC的黏结是二者协同工作的基础，且黏结滑移关系模型是其黏结性能的综合反映，故通过对17组51个高强不锈钢绞网增强ECC薄板试件进行单边拉拔试验，研究横向钢绞线间距、纵向钢绞线直径和相对锚固长度等因素对钢绞线网在ECC中黏结性能的影响规律。试验结果表明，横向钢绞线的设置可使黏结破坏由脆性破坏转变为延性破坏；高强不锈钢绞线网与ECC的黏结滑移曲线可分为5个阶段，分别为上升段、微降...
高强不锈钢绞线网与ECC的黏结是二者协同工作的基础，且黏结滑移关系模型是其黏结性能的综合反映，故通过对17组51个高强不锈钢绞网增强ECC薄板试件进行单边拉拔试验，研究横向钢绞线间距、纵向钢绞线直径和相对锚固长度等因素对钢绞线网在ECC中黏结性能的影响规律。试验结果表明，横向钢绞线的设置可使黏结破坏由脆性破坏转变为延性破坏；高强不锈钢绞线网与ECC的黏结滑移曲线可分为5个阶段，分别为上升段、微降...
考虑不同种类的纤维复合材料（FRP）格栅、格栅层数及加卸载循环方式，采用非接触式观测技术（DIC）和传统应变片测量方法，对FRP格栅与ECC复合材料试件进行了单轴反复拉伸试验，研究复合材料的轴向抗拉力学性能，验证DIC非接触式观测技术的有效性。在试验结果的基础上，提出了FRP/ECC复合材料反复受拉本构关系模型。
Post-quantum cryptography has gathered significant attention in recent times due to the NIST call for standardization of quantum resistant public key algorithms. In that context, supersingular isogeny...
Protecting ECC Against Fault Attacks: The Ring Extension Method Revisited
Elliptic curves formal groups degenerate curves
2019/5/21
Due to its shorter key size, elliptic curve cryptography (ECC) is gaining more and more popularity. However, if not properly implemented, the resulting cryptosystems may be susceptible to fault attack...
Survey for Performance & Security Problems of Passive Side-channel Attacks Countermeasures in ECC
Internet of Things Elliptic curve cryptosystems Side-channel attack
2019/1/9
The main objective of the Internet of Things is to interconnect everything around us to obtain information which was unavailable to us before, thus enabling us to make better decisions. This interconn...
Applying Horizontal Clustering Side-Channel Attacks on Embedded ECC Implementations
side-channel attack SCA ECC
2017/12/19
Side-channel attacks are a threat to cryptographic algorithms running on embedded devices. Public-key cryptosystems, including elliptic curve cryptography (ECC), are particularly vulnerable because th...
A Systematic Approach to the Side-Channel Analysis of ECC Implementations with Worst-Case Horizontal Attacks
side-channel elliptic curves scalar multiplications
2017/6/28
The wide number and variety of side-channel attacks against scalar multiplication algorithms makes their security evaluations complex, in particular in case of time constraints making exhaustive analy...
In this paper we describe how to use a secret bug as a trapdoor to design trapped ellliptic curve E(Fp). This trapdoor can be used to mount an invalid curve attack on E(Fp). E(Fp) is designed to respe...
Multi-core FPGA Implementation of ECC with Homogeneous Co-Z Coordinate Representation
ECC Co-Z Multi-Core
2016/12/9
Elliptic Curve Cryptography (ECC) is gaining popularity in recent years. Having short keys and short signatures in particular makes ECC likely to be adopted in numerous internet-of-things (IoT) device...
Attacking embedded ECC implementations through cmov side channels
ECC Montgomery ladder power analysis
2016/12/8
Side-channel attacks against implementations of elliptic-curve cryptography have been extensively studied in the literature and a large tool-set of countermeasures is available to thwart different att...
ECC on Your Fingertips: A Single Instruction Approach for Lightweight ECC Design in GF (p)
Elliptic curve Single instruction URISC
2016/1/27
Lightweight implementation of Elliptic Curve Cryptography
on FPGA has been a popular research topic due to the boom of ubiquitous
computing. In this paper we propose a novel single instruction
base...
The research on pairing-based cryptography brought forth
a wide range of protocols interesting for future embedded applications.
One significant obstacle for the widespread deployment of pairing-bas...
In this paper we present a new multiplication algorithm for residues modulo the Mersenne
prime 2521 − 1. Using this approach, on an Intel Haswell Core i7-4770, constant-time variable-base
scal...