Description
The growth of embedded systems takes advantage of architectural advances from modern processors to increase performance while maintaining a low power consumption. Among these advances is the introduction of cache memory into embedded systems. These memories speed up the memory accesses by temporarily storing data close to the execution core. Furthermore, data from different applications share the same hardware resources, so the execution of one application affects the others. These interactions between applications give rise to cache-based side-channel attacks. This threat takes advantage of memory accesses to extract secret data executed by cryptographic applications. These attacks are well known on modern processors and have led to countermeasures designed for modern processors. These solutions are either not feasible on embedded systems due to their requirements or result in high additional costs. In this context, we present a countermeasure based on a fine-grained partitioning, so that an application can dynamically lock its data into the cache. Once a data is locked, no application can infer information about the memory accesses made to it. It provides strong security guarantees for critical program sections while introducing a low performance overhead (<4%) through a new hardware/software contract.
Practical infos
Next sessions
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Advanced techniques for fault injection attacks on integrated circuits
Speaker : Paul Grandamme - Laboratoire Hubert Curien, Université Jean Monnet
The security of integrated circuits is evaluated through the implementation of attacks that exploit their inherent hardware vulnerabilities. Fault injection attacks represent a technique that is commonly employed for this purpose. These techniques permit an attacker to alter the nominal operation of the component in order to obtain confidential information. Firstly, we propose the utilisation of[…]-
SemSecuElec
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Fault injection
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PHOENIX : the first crypto-agile hardware solution for ML-KEM and HQC
Speaker : Antonio RAS
The security of the public-key cryptography protecting today and tomorrow's communication is threatened by the advent of quantum computers. To address this challenge, post-quantum cryptography is employed to devise new quantum-resistant cryptosystems. The National Institute of Standards and Technology (NIST), which led the quantum-safe transition, has already standardized the first lattice KEM[…]-
Cryptography
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SemSecuElec
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Hardware accelerator
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Anomalies Mitigation for Horizontal Side Channel Attacks with Unsupervised Neural Networks
Speaker : Gauthier Cler - SERMA Safety & Security
The success of horizontal side-channel attacks heavily depends on the quality of the traces as well as the correct extraction of interest areas, which are expected to contain relevant leakages. If former is insufficient, this will consequently degrade the identification capability of potential leakage candidates and often render attacks inapplicable. This work assess the relevance of neural[…]-
SemSecuElec
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Side-channel
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Machine learning
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Cryptanalytical extraction of complex Neural Networks in black-box settings
Speaker : Benoit COQUERET - INRIA, Thales CESTI
With the widespread development of artifical intelligence, Deep Neural Networks (DNN) have become valuable intellectual property (IP). In the past few years, software and hardware-based attacks targetting at the weights of the DNN have been introduced allowing potential attacker to gain access to a near-perfect copy of the victim's model. However, these attacks either fail against more complex[…]-
SemSecuElec
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Side-channel
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Machine learning
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Side-Channel Based Disassembly on Complex Processors: From Microachitectural Characterization to Probabilistic Models
Speaker : Julien Maillard - CEA
Side-Channel Based Disassembly (SCBD) is a category of Side-Channel Analysis (SCA) that aims at recovering information on the code executed by a processor through the observation of physical side-channels such as power consumption or electromagnetic radiations. While traditional SCA often targets cryptographic keys, SCBD focuses on retrieving assembly code that can hardly be extracted via other[…]-
SemSecuElec
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Side-channel
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Hardware reverse
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