Struct Counter64

pub struct Counter64 { /* private fields */ }

Counter64 is an implementation of the NonceSequence trait.

The internal state of a Counter64 is a 64-bit unsigned counter that increments on each call to advance and an optional 4-byte identifier. Counter and identifier values are used to construct each nonce. A limit can be set on the number of nonces allowed to be generated, by default this limit is u64::MAX. See Section 3.2 of RFC 5116.

Implementations

impl Counter64

pub fn identifier(&self) -> [u8; 4]

Provides the internal identifier.

pub fn counter(&self) -> u64

Provides the current internal counter value.

pub fn generated(&self) -> u64

Provides the current counter indicating how many nonces have been generated.

pub fn limit(&self) -> u64

Provides the limit on the number of nonces allowed to be generate.

Trait Implementations

impl NonceSequence for Counter64

fn advance(&mut self) -> Result<Nonce, Unspecified>

Returns the next nonce in the sequence.