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keccak: Add keccak_p fns for [200, 400, 800, 1600] (#55)

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Due to the generics approach of the keccak_p routine, the performance
degrades significantly. To encounter this the commonly used functions
are now defined by macros.
This commit is contained in:
Alexander Wagner 2023-04-30 18:25:27 +02:00 committed by GitHub
parent 5eab159369
commit 6e512a3b1a
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 21 additions and 9 deletions
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30
keccak/src/lib.rs
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@ -160,20 +160,32 @@ impl_lanesize!(u32, 22, |rc: u64| {
impl_lanesize!(u64, 24, |rc: u64| { rc });
macro_rules! impl_keccak {
($name:ident, $type:ty) => {
($pname:ident, $fname:ident, $type:ty) => {
/// Keccak-p sponge function
pub fn $pname(state: &mut [$type; PLEN], round_count: usize) {
keccak_p(state, round_count);
}
/// Keccak-f sponge function
pub fn $name(state: &mut [$type; PLEN]) {
pub fn $fname(state: &mut [$type; PLEN]) {
keccak_p(state, <$type>::KECCAK_F_ROUND_COUNT);
}
};
}
impl_keccak!(f200, u8);
impl_keccak!(f400, u16);
impl_keccak!(f800, u32);
impl_keccak!(p200, f200, u8);
impl_keccak!(p400, f400, u16);
impl_keccak!(p800, f800, u32);
#[cfg(not(all(target_arch = "aarch64", feature = "asm")))]
impl_keccak!(f1600, u64);
impl_keccak!(p1600, f1600, u64);
/// Keccak-p[1600, rc] permutation.
#[cfg(all(target_arch = "aarch64", feature = "asm"))]
pub fn p1600(state: &mut [u64; PLEN], round_count: usize) {
keccak_p(state, round_count);
}
/// Keccak-f[1600] permutation.
#[cfg(all(target_arch = "aarch64", feature = "asm"))]
@ -211,9 +223,9 @@ pub mod simd {
impl_lanesize_simd_u64xn!(u64x4);
impl_lanesize_simd_u64xn!(u64x8);
impl_keccak!(f1600x2, u64x2);
impl_keccak!(f1600x4, u64x4);
impl_keccak!(f1600x8, u64x8);
impl_keccak!(p1600x2, f1600x2, u64x2);
impl_keccak!(p1600x4, f1600x4, u64x4);
impl_keccak!(p1600x8, f1600x8, u64x8);
}
#[allow(unused_assignments)]