Enum FeatureLevel 

#[non_exhaustive]
pub enum FeatureLevel {
    None,
    Root,
    Parent,
}

The Signed References feature has evolved over time. This enum captures the corresponding “feature level”.

Feature levels are monotonic, in the sense that a greater feature level encompasses all the features of smaller ones.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

None

The lowest feature level, with least security. It is vulnerable to graft attacks and replay attacks.

Root

Requires IDENTITY_ROOT.

Parent

Requires SIGREFS_PARENT.

Implementations

impl FeatureLevel

pub const LATEST: FeatureLevel = FeatureLevel::Parent

Trait Implementations

impl Clone for FeatureLevel

fn clone(&self) -> FeatureLevel

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FeatureLevel

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

Formats the value using the given formatter.

impl Default for FeatureLevel

fn default() -> FeatureLevel

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for FeatureLevel

fn deserialize<__D>( __deserializer: __D, ) -> Result<FeatureLevel, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for FeatureLevel

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

Formats the value using the given formatter.

impl Hash for FeatureLevel

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for FeatureLevel

fn cmp(&self, other: &FeatureLevel) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for FeatureLevel

fn eq(&self, other: &FeatureLevel) -> 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 PartialOrd for FeatureLevel

fn partial_cmp(&self, other: &FeatureLevel) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for FeatureLevel

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for FeatureLevel

impl Eq for FeatureLevel

impl StructuralPartialEq for FeatureLevel