Struct Kmac256 

pub struct Kmac256 { /* private fields */ }

KMAC256 message authentication code (SP 800-185).

Variable-length output; the default output length is 64 bytes. Uses a customization string (may be empty) for domain separation.

Implementations

impl Kmac256

pub fn new(custom: &[u8], output_len: usize) -> Result<Self, CryptoError>

Create a new KMAC256 with the given customization string and output length.

Returns CryptoError::BadInput if output_len is 0.

Trait Implementations

impl Debug for Kmac256

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

Formats the value using the given formatter.

impl Mac for Kmac256

fn name(&self) -> &'static str

Human-readable algorithm identifier (e.g. "HMAC-SHA-256").

fn key_len(&self) -> usize

Required key length (minimum acceptable length; MACs are often variable).

fn output_len(&self) -> usize

Output tag length in bytes.

fn mac(&self, key: &[u8], msg: &[u8], out: &mut [u8]) -> Result<(), CryptoError>

Compute a MAC tag for msg under key and write it into out.

fn verify(&self, key: &[u8], msg: &[u8], tag: &[u8]) -> Result<(), CryptoError>

Verify a MAC tag in constant time.

fn mac_to_vec(&self, key: &[u8], msg: &[u8]) -> Result<Vec<u8>, CryptoError>

Convenience: compute MAC and return the tag as a Vec<u8>.