Enum TokenError 

pub enum TokenError {
    InvalidSignature,
    NotYetValid,
    Expired,
    DelegationExhausted,
    DelegationNotAllowed,
    NotAuthorized,
    InvalidFormat,
    ReadOnly,
    ZeroTtl,
}

Errors from token operations.

Variants

InvalidSignature

Token signature is invalid.

NotYetValid

Token is not yet valid (before not_before).

Expired

Token has expired (after not_after).

DelegationExhausted

Delegation depth exhausted.

DelegationNotAllowed

DELEGATE scope not present in token.

NotAuthorized

No valid token found for the requested action.

InvalidFormat

Wire format is too short or malformed.

ReadOnly

Issuer/signer keypair is public-only (post-migration zeroize or other read-only construction). The caller’s signing operation is not possible.

ZeroTtl

duration_secs == 0 was passed to PermissionToken::try_issue.

Pre-fix, a TTL of 0 produced a token with not_after == not_before, which every receiver immediately rejects as Expired. The signature verifies but every authorization check fails — silently. Reject at issue time so the caller learns about the misuse instead of minting an unusable token.

Trait Implementations

impl Clone for TokenError

fn clone(&self) -> TokenError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TokenError

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

Formats the value using the given formatter.

impl Display for TokenError

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

Formats the value using the given formatter.

impl Error for TokenError

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 TokenError

fn eq(&self, other: &TokenError) -> 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 Eq for TokenError

impl StructuralPartialEq for TokenError