| commit | b1b2146ded9ce5a84c62f30c6c4a922b449f6c90 | [log] [tgz] |
|---|---|---|
| author | Daniel Hu <Daniel.Hu@arm.com> | Mon Feb 07 10:17:06 2022 +0000 |
| committer | Pauli <pauli@openssl.org> | Tue May 03 14:37:46 2022 +1000 |
| tree | 969d007a0e310df537f7f9495b353bbad4e984d4 | |
| parent | 04904a0fff639c058d38b355d75485ca5dde0a89 [diff] |
Acceleration of chacha20 on aarch64 by SVE This patch accelerates chacha20 on aarch64 when Scalable Vector Extension (SVE) is supported by CPU. Tested on modern micro-architecture with 256-bit SVE, it has the potential to improve performance up to 20% The solution takes a hybrid approach. SVE will handle multi-blocks that fit the SVE vector length, with Neon/Scalar to process any tail data Test result: With SVE type 1024 bytes 8192 bytes 16384 bytes ChaCha20 1596208.13k 1650010.79k 1653151.06k Without SVE (by Neon/Scalar) type 1024 bytes 8192 bytes 16384 bytes chacha20 1355487.91k 1372678.83k 1372662.44k The assembly code has been reviewed internally by ARM engineer Fangming.Fang@arm.com Signed-off-by: Daniel Hu <Daniel.Hu@arm.com> Reviewed-by: Tomas Mraz <tomas@openssl.org> Reviewed-by: Paul Dale <pauli@openssl.org> (Merged from https://github.com/openssl/openssl/pull/17916)
OpenSSL is a robust, commercial-grade, full-featured Open Source Toolkit for the Transport Layer Security (TLS) protocol formerly known as the Secure Sockets Layer (SSL) protocol. The protocol implementation is based on a full-strength general purpose cryptographic library, which can also be used stand-alone.
OpenSSL is descended from the SSLeay library developed by Eric A. Young and Tim J. Hudson.
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