Struct HmacSha512 

pub struct HmacSha512 { /* private fields */ }

Available on (crate features mac-hmac or mac-blake3) and crate feature mac-hmac only.

Streaming HMAC-SHA512. Same shape as HmacSha256 with a 64-byte tag.

Example

use crypt_io::mac::HmacSha512;

let mut m = HmacSha512::new(b"shared key")?;
m.update(b"first chunk ");
m.update(b"second chunk");
let tag = m.finalize();
assert_eq!(tag.len(), 64);

Implementations

impl HmacSha512

pub fn new(key: &[u8]) -> Result<Self>

Construct a fresh hasher under key.

Errors

See HmacSha256::new.

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

Absorb data into the running MAC. Returns &mut Self so calls can chain.

pub fn finalize(self) -> [u8; 64]

Finalise the MAC and return the 64-byte tag. Consumes the hasher.

pub fn verify(self, expected_tag: &[u8]) -> bool

Finalise and verify against expected_tag in constant time. Returns true iff the computed tag matches expected_tag. Consumes the hasher.

Trait Implementations

impl Clone for HmacSha512

fn clone(&self) -> HmacSha512

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HmacSha512

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

Formats the value using the given formatter.