Struct HmacSha256Keyed 

pub struct HmacSha256Keyed(/* private fields */);

Pre-keyed HMAC-SHA-256 instance; implements StreamingMac.

Created via HmacSha256::new_keyed. The key is bound at construction time; subsequent calls to update feed message chunks, and finalize or verify consume the instance.

Implementations

impl HmacSha256Keyed

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

Create a pre-keyed HMAC-SHA-256 instance.

Trait Implementations

impl StreamingMac for HmacSha256Keyed

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

Feed additional data into the MAC state.

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

Consume the MAC state and write the tag into out.

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

Consume the MAC state, compute the tag, and verify against expected in constant time.