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Comment for KeccakPermutation

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wborgeaud 2021-12-29 16:58:31 +01:00
parent df2b6e76b7
commit 77a2fc6100
1 changed files with 2 additions and 0 deletions
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plonky2/src/hash/keccak.rs
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@ -6,6 +6,8 @@ use crate::plonk::config::Hasher;
use crate::util::serialization::Buffer; use crate::util::serialization::Buffer;
/// Keccak-256 permutation used in the challenger. /// Keccak-256 permutation used in the challenger.
/// A state `input: [F; 12]` is sent to the field representation of `H(input) || H(H(input)) || H(H(H(input)))`
/// where `H` is the Keccak-256 hash.
pub struct KeccakPermutation; pub struct KeccakPermutation;
impl<F: RichField> PlonkyPermutation<F> for KeccakPermutation { impl<F: RichField> PlonkyPermutation<F> for KeccakPermutation {
fn permute(input: [F; SPONGE_WIDTH]) -> [F; SPONGE_WIDTH] { fn permute(input: [F; SPONGE_WIDTH]) -> [F; SPONGE_WIDTH] {