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crypto: x86/nhpoly1305 - add SSE2 accelerated NHPoly1305

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Add a 64-bit SSE2 implementation of NHPoly1305, an ε-almost-∆-universal
hash function used in the Adiantum encryption mode.  For now, only the
NH portion is actually SSE2-accelerated; the Poly1305 part is less
performance-critical so is just implemented in C.

Signed-off-by: Eric Biggers <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>
This commit is contained in:
Eric Biggers 2018-12-04 22:20:00 -08:00 • committed by Herbert Xu
commit 012c82388c
4 changed files with 211 additions and 0 deletions
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8
crypto/Kconfig
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@ -501,6 +501,14 @@ config CRYPTO_NHPOLY1305
select CRYPTO_HASH
select CRYPTO_POLY1305
config CRYPTO_NHPOLY1305_SSE2
tristate "NHPoly1305 hash function (x86_64 SSE2 implementation)"
depends on X86 && 64BIT
select CRYPTO_NHPOLY1305
help
SSE2 optimized implementation of the hash function used by the
Adiantum encryption mode.
config CRYPTO_ADIANTUM
tristate "Adiantum support"
select CRYPTO_CHACHA20