Struct scuttlebutt::AesHash

pub struct AesHash { /* private fields */ }

AES-based correlation-robust hash function.

This hash function supports the correlation-robust variants given in https://eprint.iacr.org/2019/074.

Implementations

impl AesHash

pub fn new(key: Block) -> Self

Initialize the hash function using key.

pub fn cr_hash(&self, _i: Block, x: Block) -> Block

Correlation-robust hash function for 128-bit inputs (cf. https://eprint.iacr.org/2019/074, §7.2).

The function computes π(x) ⊕ x.

pub fn ccr_hash(&self, i: Block, x: Block) -> Block

Circular correlation-robust hash function (cf. https://eprint.iacr.org/2019/074, §7.3).

The function computes H(σ(x)), where H is a correlation-robust hash function and σ(x₀ || x₁) = (x₀ ⊕ x₁) || x₁.

pub fn tccr_hash(&self, i: Block, x: Block) -> Block

Tweakable circular correlation robust hash function (cf. https://eprint.iacr.org/2019/074, §7.4).

The function computes π(π(x) ⊕ i) ⊕ π(x).

pub fn tccr_hash_many<const Q: usize>( &self, i: Block, xs: [Block; Q] ) -> [Block; Q]

where ArrayUnrolledOps: UnrollableArraySize<Q>,

Batch tweakable circular correlation robust hash function