Struct ring::hmac::Context[][src]

pub struct Context { /* fields omitted */ }

A context for multi-step (Init-Update-Finish) HMAC signing.

Use sign for single-step HMAC signing.


impl Context[src]

pub fn with_key(signing_key: &Key) -> Self[src]

Constructs a new HMAC signing context using the given digest algorithm and key.

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

Updates the HMAC with all the data in data. update may be called zero or more times until finish is called.

pub fn sign(self) -> Tag[src]

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

impl Clone for Context[src]

impl Debug for Context[src]

Auto Trait Implementations

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