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Side-Channel Attack

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Bilibili Tech
Bilibili Tech
Jun 28, 2022 · Information Security

Code Branch Avoidance Techniques in SM2 Elliptic Curve Cryptographic Implementations

The article explains how data‑dependent branches in SM2 elliptic‑curve implementations leak secret keys via power, EM, and cache side‑channels, compares point addition and doubling, critiques Montgomery ladder timing leaks, and proposes a branch‑free select‑based scalar multiplication to achieve constant‑time security at some performance cost.

Montgomery LadderSM2 cryptographySide-Channel Attack
0 likes · 11 min read
Code Branch Avoidance Techniques in SM2 Elliptic Curve Cryptographic Implementations
IT Services Circle
IT Services Circle
Mar 2, 2022 · Information Security

Understanding Spectre: Speculative Execution, Side‑Channel Attacks, and Browser Mitigations

This article explains the Spectre hardware vulnerability, how it leverages speculative execution and side‑channel attacks to read arbitrary memory, and reviews the browser‑level defenses such as cache policies, timer reduction, rel="noopener", COOP, COEP and CORB that aim to mitigate its impact.

COEPCOOPSide-Channel Attack
0 likes · 15 min read
Understanding Spectre: Speculative Execution, Side‑Channel Attacks, and Browser Mitigations