Enum KeyError 

pub enum KeyError {
    MissingActiveKey,
    MissingKeyVersion,
    InvalidKeyMaterial,
}

A key provider could not supply usable key material.

Carries no key bytes. Missing material is fatal to the operation; there is no fallback key (INV-2, SR-29).

Variants

MissingActiveKey

No active key is configured.

MissingKeyVersion

The requested historical key version is not available. Validation fails closed for that candidate rather than falling back.

InvalidKeyMaterial

Key material was present but unusable (e.g. empty).

Trait Implementations

impl Debug for KeyError

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

Formats the value using the given formatter.

impl Display for KeyError

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

Formats the value using the given formatter.

impl Eq for KeyError

impl Error for KeyError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl PartialEq for KeyError

fn eq(&self, other: &KeyError) -> 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 StructuralPartialEq for KeyError