Vectorization on ChaCha Stream Cipher

被引：9

作者：

Goll, Martin ^{[1
]}

Gueron, Shay ^{[2
,3
]}

机构：

[1] Ruhr Univ Bochum, Bochum, Germany

[2] Univ Haifa, Dept Math, IL-31999 Haifa, Israel

[3] Intel Corp, Israel Dev Ctr, Haifa, Israel

来源：

2014 11TH INTERNATIONAL CONFERENCE ON INFORMATION TECHNOLOGY: NEW GENERATIONS (ITNG) | 2014年

关键词：

component; Stream Cipher; ChaCha; SSL; TLS; optimization; Haswell;

D O I：

10.1109/ITNG.2014.33

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper describes software optimization for the stream Cipher ChaCha. We leverage the wide vectorization capabilities of the new AVX2 architecture, to speed up ChaCha encryption (and decryption) on the latest x86_64 processors. In addition, we show how to apply vectorization for the future AVX512 architecture, and get further speedup. This leads to significant performance gains. For example, on the latest Intel Haswell microarchitecture, our AVX2 implementation performs at 1.43 cycles per byte (on a 4KB message), which is similar to 2x faster than the current implementation in the Chromium project.

引用

页码：612 / 615

页数：4

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