Enum SdJwtError 

#[non_exhaustive]
pub enum SdJwtError {
    NotAnSdJwt,
    Disclosure(DisclosureError),
    MalformedJwt,
    PayloadNotAnObject,
    UnsupportedHashAlg(String),
    UnusedDisclosures(usize),
    DuplicateDigest(String),
    ClaimCollision(String),
}

Anything that can go wrong reading an SD-JWT.

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.

NotAnSdJwt

Fewer than two ~-separated segments, so not an SD-JWT at all.

Disclosure(DisclosureError)

A disclosure segment could not be read.

MalformedJwt

The issuer-signed JWT is not three dot-separated parts.

PayloadNotAnObject

The JWT payload is not a JSON object.

UnsupportedHashAlg(String)

_sd_alg names a hash function this does not implement.

Carried rather than defaulted: clause 4.1.1 permits the claim to be absent and to mean sha-256, but a present value naming something else must not be read as if it said sha-256.

UnusedDisclosures(usize)

A disclosure was supplied whose digest appears nowhere in the token.

Clause 7.1 step 4: every disclosure must be used. The count is reported rather than the disclosure itself, which carries a claim value.

DuplicateDigest(String)

The same digest appeared more than once.

RFC 9901 clause 4.1: “The same digest value MUST NOT appear more than once in the SD-JWT.” Repetition is how a token smuggles a second meaning past a reader that de-duplicates, so it is refused rather than collapsed.

ClaimCollision(String)

A disclosure would overwrite a claim already present in cleartext.

Clause 7.1 makes this a rejection condition: the token would otherwise have two values for one claim and the reader would pick one.

Trait Implementations

impl Debug for SdJwtError

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

Formats the value using the given formatter.

impl Display for SdJwtError

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

Formats the value using the given formatter.

impl Eq for SdJwtError

impl Error for SdJwtError

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<DisclosureError> for SdJwtError

fn from(source: DisclosureError) -> Self

Converts to this type from the input type.

impl PartialEq for SdJwtError

fn eq(&self, other: &Self) -> bool

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for SdJwtError