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crypto: arm64/chacha20 - implement NEON version based on SSE3 code

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This is a straight port to arm64/NEON of the x86 SSE3 implementation
of the ChaCha20 stream cipher. It uses the new skcipher walksize
attribute to process the input in strides of 4x the block size.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Ard Biesheuvel
2017-01-11 16:41:49 +00:00
committed by Herbert Xu
parent 41e05324fd
commit b7171ce9eb
4 changed files with 586 additions and 0 deletions
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arch/arm64/crypto/Makefile
+3
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@@ -41,6 +41,9 @@ sha256-arm64-y := sha256-glue.o sha256-core.o
obj-$(CONFIG_CRYPTO_SHA512_ARM64) += sha512-arm64.o
sha512-arm64-y := sha512-glue.o sha512-core.o
obj-$(CONFIG_CRYPTO_CHACHA20_NEON) += chacha20-neon.o
chacha20-neon-y := chacha20-neon-core.o chacha20-neon-glue.o
AFLAGS_aes-ce.o := -DINTERLEAVE=4
AFLAGS_aes-neon.o := -DINTERLEAVE=4