Enum TkaError 

pub enum TkaError {
    Decode(&'static str),
    BadSignature,
    UntrustedKey,
    CredentialCannotAuthorize,
    NodeKeyMismatch,
    BadParent,
    BadKeyState,
    BadChain,
    UnsignedAum,
}

Errors from TKA verification.

Variants

Decode(&'static str)

The CBOR blob could not be decoded into the expected shape.

BadSignature

A signature failed to verify cryptographically.

UntrustedKey

The authorizing key is not trusted in the current authority state.

CredentialCannotAuthorize

A credential signature was presented where a node-authorizing signature was required.

NodeKeyMismatch

The presented signature does not cover the given node key.

BadParent

An AUM’s PrevAUMHash does not match the hash of the state it was applied to (Go “parent AUMHash mismatch”) — the chain link is broken.

BadKeyState

An AUMAddKey named a key id that is already trusted, or an AUMRemoveKey/AUMUpdateKey named a key id that is not (Go “key already exists” / ErrNoSuchKey).

BadChain

An AUM chain was empty, did not begin at a genesis (AUMCheckpoint/AUMAddKey with no parent), or otherwise could not be replayed into a state.

UnsignedAum

An AUM carried no signatures (Go aumVerify “unsigned AUM”). Every AUM — including the genesis — must be signed by at least one trusted key before it can advance the chain.

Trait Implementations

impl Clone for TkaError

fn clone(&self) -> TkaError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TkaError

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

Formats the value using the given formatter.

impl Display for TkaError

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

Formats the value using the given formatter.

impl Eq for TkaError

impl Error for TkaError

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 TkaError

fn eq(&self, other: &TkaError) -> 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 TkaError