AuthGraph: drop now-unused StdClock am: 20c6549f am: 4ea954c7 am: 539443d3

use authgraph_boringssl as boring;

use authgraph_core::{

    error,

    key::MillisecondsSinceEpoch,

    keyexchange,

    error, keyexchange,

    ta::{AuthGraphTa, Role},

    traits,

};

use authgraph_hal::channel::SerializedChannel;

use std::sync::{Arc, Mutex};

use std::time::Instant;

/// Monotonic clock with an epoch that starts at the point of construction.

/// (This makes it unsuitable for use outside of testing, because the epoch

/// will not match that of any other component.)

pub struct StdClock(Instant);

impl Default for StdClock {

    fn default() -> Self {

        Self(Instant::now())

    }

}

impl traits::MonotonicClock for StdClock {

    fn now(&self) -> MillisecondsSinceEpoch {

        let millis: i64 = self

            .0

            .elapsed()

            .as_millis()

            .try_into()

            .expect("failed to fit timestamp in i64");

        MillisecondsSinceEpoch(millis)

    }

}

/// Implementation of the AuthGraph TA that runs locally in-process (and which is therefore

/// insecure).