Struct Context

pub struct Context {
    pub(crate) algorithm: &'static Algorithm,
    digest_ctx: DigestContext,
    msg_len: u64,
    max_input_reached: bool,
}

A context for multi-step (Init-Update-Finish) digest calculations.

Fields

algorithm: &'static Algorithm

The context’s algorithm.

digest_ctx: DigestContext

msg_len: u64

max_input_reached: bool

Implementations

impl Context

pub fn new(algorithm: &'static Algorithm) -> Self

Constructs a new context.

Panics

new panics if it fails to initialize an aws-lc digest context for the given algorithm.

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

Updates the message to digest with all the data in data.

Panics

Panics if update causes total input length to exceed maximum allowed (u64::MAX).

fn try_update(&mut self, data: &[u8]) -> Result<(), Unspecified>

pub fn finish(self) -> Digest

Finalizes the digest calculation and returns the digest value.

finish consumes the context so it cannot be (mis-)used after finish has been called.

Panics

Panics if the digest is unable to be finalized

fn try_finish(self) -> Result<Digest, Unspecified>

pub fn algorithm(&self) -> &'static Algorithm

The algorithm that this context is using.

Trait Implementations

impl Clone for Context

fn clone(&self) -> Context

Returns a copy of the value.

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

Performs copy-assignment from source.