Struct HmacCtx 

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

HMAC context bound to a specific digest algorithm.

Implementations

impl HmacCtx

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

Create an HMAC context.

The digest name is passed to EVP_MAC_init as an OSSL_PARAM.

Errors

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

Feed data into the HMAC computation.

Errors

pub fn finish(&mut self, out: &mut [u8]) -> Result<usize, ErrorStack>

Finalise the HMAC.

Errors

pub fn finish_to_vec(&mut self) -> Result<Vec<u8>, ErrorStack>

Finalise and return the HMAC in a freshly allocated Vec<u8>.

Errors

pub fn mac_size(&self) -> usize

Expected MAC size in bytes.

pub fn oneshot( digest: &DigestAlg, key: &[u8], data: &[u8], out: &mut [u8], ) -> Result<usize, ErrorStack>

One-shot HMAC computation.

Errors