Resilient Self-Debugging Software Protection

轻量密码学的高效复合IC保护

Hardware-Efficient Compound IC Protection with Lightweight Cryptography

本文提出一种基于轻量密码学的复合IC保护机制，通过逻辑锁定和硬件混淆技术减少硬件复杂性，并抵御现有移除、代数和逻辑锁定攻击。

基于人工智能的监督测量完整性验证层用于逆变器主导微电网的网络安全保护

An AI-Based Supervisory Measurement Integrity Validation Layer for Cyber-Resilient AC/DC Protection in Inverter-Based Microgrids

本文提出一种基于人工智能的监督测量完整性验证方案，用于检测逆变器主导微电网中因虚假数据注入攻击导致的测量异常，通过训练循环神经网络分析同步的瞬时电流测量数据，实现对故障轨迹与网络测量流的区分。

CARE: Lightweight Attack Resilient Secure Boot Architecturewith Onboard Recovery for RISC-V based SOC

Recent technological advancements have proliferated the use of small embedded devices for collecting, processing, and transferring the security-critical information. The Internet of Things (IoT) has enabled remote access and control of these network-connected devices. Consequently, an attacker can exploit security vulnerabilities and compromise these devices. In this context, the secure boot becomes a useful security mechanism to verify the integrity and authenticity of the software state of the devices. However, the current secure boot schemes focus on detecting the presence of potential malw…

Hybrid Protection of Digital FIR Filters

A digital Finite Impulse Response (FIR) filter is a ubiquitous block in digital signal processing applications and its behavior is determined by its coefficients. To protect filter coefficients from an adversary, efficient obfuscation techniques have been proposed, either by hiding them behind decoys or replacing them by key bits. In this article, we initially introduce a query attack that can discover the secret key of such obfuscated FIR filters, which could not be broken by existing prominent attacks. Then, we propose a first of its kind hybrid technique, including both hardware obfuscation…

Rank Correlation Measure: A Representational Transformation for Biometric Template Protection

Despite a variety of theoretical-sound techniques have been proposed for biometric template protection, there is rarely practical solution that guarantees non-invertibility, cancellability, non-linkability and performance simultaneously. In this paper, a ranking-based representational transformation is proposed for fingerprint templates. The proposed method transforms a real-valued feature vector into index code such that the pairwise-order measure in the resultant codes are closely correlated with rank similarity measure. Such a ranking based technique offers two major merits: 1) Resilient to…

Aggregation Service for Federated Learning: An Efficient, Secure, and More Resilient Realization

Federated learning has recently emerged as a paradigm promising the benefits of harnessing rich data from diverse sources to train high quality models, with the salient features that training datasets never leave local devices. Only model updates are locally computed and shared for aggregation to produce a global model. While federated learning greatly alleviates the privacy concerns as opposed to learning with centralized data, sharing model updates still poses privacy risks. In this paper, we present a system design which offers efficient protection of individual model updates throughout the…

Evaluating Effectiveness of Tamper Proofing on Dynamic Graph Software Watermarks

For enhancing the protection level of dynamic graph software watermarks and for the purpose of conducting the analysis which evaluates the effect of integrating two software protection techniques such as software watermarking and tamper proofing, constant encoding technique along with the enhancement through the idea of constant splitting is proposed. In this paper Thomborson technique has been implemented with the scheme of breaking constants which enables to encode all constants without having any consideration about their values with respect to the value of watermark tree. Experimental anal…

An Enclave-based TEE for SE-in-SoC in RISC-V Industry

Secure Element (SE) in SoC sees an increasing adoption in industry. Many applications in IoT devices are bound to the SE because it provides strong cryptographic functions and physical protection. Though SE-in-SoC provides strong proven isolation for software programs, it also brings more design complexity and higher cost to PCB board building. More, SE-in-SoC may still have security concerns, such as malware installation and user impersonation. In this work, we employ TEE, a hardware-backed security technique, for protecting SE-in-SoC and RISCV. In particular, we construct various enclaves fo…

Data security as a top priority in the digital world: preserve data value by being proactive and thinking security first

Today, large amounts of data are being continuously produced, collected, and exchanged between systems. As the number of devices, systems and data produced grows up, the risk of security breaches increases. This is all the more relevant in times of COVID-19, which has affected not only the health and lives of human beings' but also the lifestyle of society, i.e., the digital environment has replaced the physical. This has led to an increase in cyber security threats of various nature. While security breaches and different security protection mechanisms have been widely covered in the literatur…