Implementing BLAKE with AVX, AVX2, and XOP.
Samuel Neves, Jean-Philippe Aumasson · 2012
Abstract. In 2013 Intel will release the AVX2 instructions, which introduce 256-bit singleinstruction multiple-data (SIMD) integer arithmetic. This will enable desktop and server processors from this vendor to support 4-way SIMD computation of 64-bit add-rotate-xor algorithms, as well as 8-way 32-bit SIMD computations. AVX2 also includes interesting instructions for cryptographic functions, like any-to-any permute and vectorized table-lookup. In this paper, we explore the potential of AVX2 to speed-up the SHA-3 finalist BLAKE, and present the first working assembly implementations of BLAKE-256 and BLAKE-512 with AVX2. We then investigate the potential of the recent AVX and XOP instructions to