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Orchard: tidy nullifiers

This commit is contained in:
Deirdre Connolly 2021-03-14 05:45:21 -04:00 committed by Deirdre Connolly
parent b93a71c779
commit d3f0b226e6
1 changed files with 3 additions and 2 deletions
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5
zebra-chain/src/orchard/note/nullifiers.rs
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@ -1,6 +1,7 @@
#![allow(clippy::unit_arg)]
#![allow(dead_code)]
use group::GroupEncoding;
use halo2::pasta::pallas;
use super::super::{
@ -19,7 +20,7 @@ use super::super::{
// TODO: I'M EXTRAPOLATING HERE, DOUBLE CHECK THE SPEC WHEN FINALIZED
#[allow(non_snake_case)]
pub fn mixing_pedersen_hash(P: pallas::Point, x: pallas::Scalar) -> pallas::Point {
P + pallas_group_hash(*b"Zcash_P_", b"") * x
P + pallas_group_hash(b"Zcash_P_", b"") * x
}
/// A cryptographic permutation, defined in [poseidonhash].
@ -41,7 +42,7 @@ fn poseidon_hash(x: pallas::Base, y: pallas::Base) -> pallas::Base {
/// [concreteprfs]: https://zips.z.cash/protocol/protocol.pdf#concreteprfs
/// [poseidonhash]: https://zips.z.cash/protocol/nu5.pdf#poseidonhash
fn prf_nf(nk: [u8; 32], rho: [u8; 32]) -> [u8; 32] {
poseidon_hash(nk, rho)
poseidon_hash(nk.into(), rho.into()).into()
}
/// A Nullifier for Orchard transactions