Struct Aes256Cmac 

pub struct Aes256Cmac { /* private fields */ }

AES-256 CMAC.

CMAC message authentication code (NIST SP 800-38B), with a 128-bit tag.

Implementations

impl Aes256Cmac

pub const OUTPUT_SIZE: usize = 16

Size of the tag, in bytes.

pub fn new(key: &[u8; 32]) -> Self

Start a new MAC computation with key.

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

Absorb data.

pub fn finalize(self) -> [u8; 16]

Finish the computation and return the tag.

pub fn verify(self, tag: &[u8]) -> Result<(), Error>

Finish the computation and compare the tag with tag in constant time.

A truncated tag (shorter than 16 bytes) is compared against the corresponding prefix; an empty one never verifies.

pub fn reset(&mut self)

Discard the absorbed data, keeping the key.

pub fn mac(key: &[u8; 32], data: &[u8]) -> [u8; 16]

Compute the tag of data under key in one call.

Trait Implementations

impl Clone for Aes256Cmac

fn clone(&self) -> Aes256Cmac

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Aes256Cmac

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

Formats the value using the given formatter.