Enum TimePrecision 

pub enum TimePrecision {
    Hour,
    Quarter,
    Minute,
}

The granularity at which the time value is quantised when constructing the KDF input string.

Coarser precision yields a longer validity window, making it easier for a legitimate user to produce the correct key; finer precision increases the cost of time-sweeping attacks.

Variants

Hour

Quantise to the current hour.

Input example: "14" (24-hour) | "02PM" (12-hour).
The derived key is valid for the entire 60-minute block.

Quarter

Quantise to the current 15-minute block (minute snapped to 00, 15, 30, or 45).

Input example: "14:30" (24-hour) | "02:30PM" (12-hour).
The derived key is valid for the 15-minute interval enclosing the chosen minute.

Minute

Quantise to the current minute (1-minute validity window).

Input example: "14:37" (24-hour) | "02:37PM" (12-hour).
The strongest temporal constraint available — both parties’ clocks must be NTP-synchronised to within ±30 seconds.

Trait Implementations

impl Clone for TimePrecision

fn clone(&self) -> TimePrecision

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TimePrecision

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for TimePrecision

fn eq(&self, other: &TimePrecision) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for TimePrecision

impl Eq for TimePrecision

impl StructuralPartialEq for TimePrecision