Struct polyval::Polyval

pub struct Polyval { /* fields omitted */ }

POLYVAL: GHASH-like universal hash over GF(2^128).

Trait Implementations

impl Clone for Polyval

fn clone(&self) -> Self

Returns a copy of the value.

pub fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Polyval

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl NewUniversalHash for Polyval

type KeySize = U16

Size of the key for the universal hash function.

fn new(h: &Key) -> Self

Initialize POLYVAL with the given H field element

impl UniversalHash for Polyval

type BlockSize = U16

Size of the inputs to and outputs from the universal hash function

fn update(&mut self, x: &Block)

Input a field element X to be authenticated

fn reset(&mut self)

Reset internal state

fn finalize(self) -> Output<Self>

Get POLYVAL result (i.e. computed S field element)

pub fn update_padded(&mut self, data: &[u8])

Input data into the universal hash function. If the length of the data is not a multiple of the block size, the remaining data is padded with zeroes up to the BlockSize.

pub fn finalize_reset(&mut self) -> Output<Self>

Obtain the Output of a UniversalHash computation and reset it back to its initial state.

pub fn verify(
    self,
    other: &GenericArray<u8, Self::BlockSize>
) -> Result<(), Error>

Verify the UniversalHash of the processed input matches a given Output. This is useful when constructing Message Authentication Codes (MACs) from universal hash functions.