Enum UcanParseError 

pub enum UcanParseError {
    MalformedJwt(usize),
    Base64Decode {
        segment: &'static str,
        reason: String,
    },
    JsonParse {
        segment: &'static str,
        reason: String,
    },
    UnsupportedAlg(String),
    UnsupportedTyp(String),
    UnsupportedUcv(String),
    NonAtdCap(String),
    UnsupportedDidMethod {
        field: &'static str,
        did: String,
    },
}

Errors returned by crate::ucan::parse_jwt.

All variants map to wire code ERR_UCAN_INVALID = 1010 — retryable: false (deterministic; same token → same failure).

Variants

MalformedJwt(usize)

JWT compact form requires exactly 3 .-separated segments.

Base64Decode

Header or payload base64url-decode failed.

Fields

segment: &'static str

reason: String

JsonParse

Header or payload JSON deserialize failed.

Fields

segment: &'static str

reason: String

UnsupportedAlg(String)

header.alg != "EdDSA". Spec §4.3.

UnsupportedTyp(String)

header.typ != "ucan/1.0+jwt". Spec §4.1.

UnsupportedUcv(String)

header.ucv != "1.0". Spec §4.1.

NonAtdCap(String)

payload.cmd != "atd-cap". Cross-system replay prevention, spec §4.5.

UnsupportedDidMethod

iss or aud doesn’t start with did:key:z. Spec §4.4 — did:web / did:agent are deferred to follow-up SPs.

Fields

field: &'static str

did: String

Trait Implementations

impl Clone for UcanParseError

fn clone(&self) -> UcanParseError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for UcanParseError

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

Formats the value using the given formatter.

impl Display for UcanParseError

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

Formats the value using the given formatter.

impl Error for UcanParseError

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 From<UcanParseError> for UcanVerifyError

fn from(source: UcanParseError) -> Self

Converts to this type from the input type.

impl PartialEq for UcanParseError

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

impl StructuralPartialEq for UcanParseError