crypto: x86/nhpoly1305 - add AVX2 accelerated NHPoly1305
Add a 64-bit AVX2 implementation of NHPoly1305, an ε-almost-∆-universal
hash function used in the Adiantum encryption mode. For now, only the
NH portion is actually AVX2-accelerated; the Poly1305 part is less
performance-critical so is just implemented in C.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/crypto/Kconfig b/crypto/Kconfig
index cd3d9cb..d0bff6e 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -509,6 +509,14 @@
SSE2 optimized implementation of the hash function used by the
Adiantum encryption mode.
+config CRYPTO_NHPOLY1305_AVX2
+ tristate "NHPoly1305 hash function (x86_64 AVX2 implementation)"
+ depends on X86 && 64BIT
+ select CRYPTO_NHPOLY1305
+ help
+ AVX2 optimized implementation of the hash function used by the
+ Adiantum encryption mode.
+
config CRYPTO_ADIANTUM
tristate "Adiantum support"
select CRYPTO_CHACHA20