pub struct Context { /* private fields */ }
Expand description
A context for multi-step (Init-Update-Finish) HMAC signing.
Use sign
for single-step HMAC signing.
Implementations§
source§impl Context
impl Context
sourcepub fn with_key(signing_key: &Key) -> Self
pub fn with_key(signing_key: &Key) -> Self
Constructs a new HMAC signing context using the given digest algorithm and key.
sourcepub fn update(&mut self, data: &[u8])
pub fn update(&mut self, data: &[u8])
Updates the HMAC with all the data in data
. update
may be called
zero or more times until finish
is called.
sourcepub fn sign(self) -> Tag
pub fn sign(self) -> Tag
Finalizes the HMAC calculation and returns the HMAC value. sign
consumes the context so it cannot be (mis-)used after sign
has been
called.
It is generally not safe to implement HMAC verification by comparing
the return value of sign
to a tag. Use verify
for verification
instead.
Trait Implementations§
Auto Trait Implementations§
impl RefUnwindSafe for Context
impl Sync for Context
impl Unpin for Context
impl UnwindSafe for Context
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more