Re: [PATCH] crypto: arm/chacha20 - faster 8-bit rotations and other optimizations

On 31 August 2018 at 17:56, Ard Biesheuvel wrote: > Hi Eric, > > On 31 August 2018 at 10:01, Eric Biggers wrote: >> From: Eric Biggers >> >> Optimize ChaCha20 NEON performance by: >> >> - Implementing the 8-bit rotations using the 'vtbl.8' instruction. >> - Streamlining the part that adds the

Re: [PATCH] crypto: arm/chacha20 - faster 8-bit rotations and other optimizations

Hi Eric, On 31 August 2018 at 10:01, Eric Biggers wrote: > From: Eric Biggers > > Optimize ChaCha20 NEON performance by: > > - Implementing the 8-bit rotations using the 'vtbl.8' instruction. > - Streamlining the part that adds the original state and XORs the data. > - Making some other small

[PATCH] crypto: arm/chacha20 - faster 8-bit rotations and other optimizations

From: Eric Biggers Optimize ChaCha20 NEON performance by: - Implementing the 8-bit rotations using the 'vtbl.8' instruction. - Streamlining the part that adds the original state and XORs the data. - Making some other small tweaks. On ARM Cortex-A7, these optimizations improve ChaCha20