[PATCH 0/2] crypto: arm64/ARM: NEON accelerated ChaCha20

Herbert Xu herbert at gondor.apana.org.au
Tue Dec 27 02:04:00 PST 2016


On Thu, Dec 08, 2016 at 02:28:57PM +0000, Ard Biesheuvel wrote:
> Another port of existing x86 SSE code to NEON, again both for arm64 and ARM.
> 
> ChaCha20 is a stream cipher described in RFC 7539, and is intended to be
> an efficient software implementable 'standby cipher', in case AES cannot
> be used.
> 
> This NEON implementation is almost 2x as fast as the generic C code
> (measured on Cortex-A57 using the arm64 version)
> 
> I'm aware that blkciphers are deprecated in favor of skciphers, but this
> code (like the x86 version) uses the init and setkey routines of the generic
> version, so it is probably better to port all implementations at once.
> 
> Ard Biesheuvel (2):
>   crypto: arm64/chacha20 - implement NEON version based on SSE3 code
>   crypto: arm/chacha20 - implement NEON version based on SSE3 code

Both patches applied.  Thanks.
-- 
Email: Herbert Xu <herbert at gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
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