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authorArd Biesheuvel <ard.biesheuvel@linaro.org>2017-01-11 19:41:49 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2017-01-12 19:26:48 +0300
commitb7171ce9eb523fd90e38f2d138d1b6ed2ff3eafd (patch)
treeb2faa0f4311afa4bcd6c3b045d8905235ad88e70 /arch/arm64/crypto/Kconfig
parent41e05324fde983b1342f86239868f1959f6032a5 (diff)
downloadlinux-b7171ce9eb523fd90e38f2d138d1b6ed2ff3eafd.tar.xz
crypto: arm64/chacha20 - implement NEON version based on SSE3 code
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>
Diffstat (limited to 'arch/arm64/crypto/Kconfig')
-rw-r--r--arch/arm64/crypto/Kconfig6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm64/crypto/Kconfig b/arch/arm64/crypto/Kconfig
index 450a85df041a..0bf0f531f539 100644
--- a/arch/arm64/crypto/Kconfig
+++ b/arch/arm64/crypto/Kconfig
@@ -72,4 +72,10 @@ config CRYPTO_CRC32_ARM64
depends on ARM64
select CRYPTO_HASH
+config CRYPTO_CHACHA20_NEON
+ tristate "NEON accelerated ChaCha20 symmetric cipher"
+ depends on KERNEL_MODE_NEON
+ select CRYPTO_BLKCIPHER
+ select CRYPTO_CHACHA20
+
endif