An Implementation of Global Flush Primitives Using Counters

Lightweight 4x4 MDS Matrices for Hardware-Oriented Cryptographic Primitives

Linear diffusion layer is an important part of lightweight block ciphers and hash functions. This paper presents an efficient class of lightweight 4x4 MDS matrices such that the implementation cost of them and their corresponding inverses are equal. The main target of the paper is hardware oriented cryptographic primitives and the implementation cost is measured in terms of the required number ...

An Implementation of Global Flush Primitive using F-channels

Enhanced Flush+Reload Attack on AES

In cloud computing, multiple users can share the same physical machine that can potentially leak secret information, in particular when the memory de-duplication is enabled. Flush+Reload attack is a cache-based attack that makes use of resource sharing. T-table implementation of AES is commonly used in the crypto libraries like OpenSSL. Several Flush+Reload attacks on T-table implementat...

i2WAP: Improving non-volatile cache lifetime by reducing inter- and intra-set write variations

Modern computers require large on-chip caches, but the scalability of traditional SRAM and eDRAM caches is constrained by leakage and cell density. Emerging nonvolatile memory (NVM) is a promising alternative to build large on-chip caches. However, limited write endurance is a common problem for non-volatile memory technologies. In addition, today’s cache management might result in unbalanced w...

Flush+Flush: A Fast and Stealthy Cache Attack

Research on cache attacks has shown that CPU caches leak significant information. Proposed detection mechanisms assume that all cache attacks cause more cache hits and cache misses than benign applications and use hardware performance counters for detection. In this article, we show that this assumption does not hold by developing a novel attack technique: the Flush+Flush attack. The Flush+Flus...