Enum Erc8128Error 

#[non_exhaustive]
pub enum Erc8128Error {
    InvalidUrl(String),
    InvalidOptions(String),
    InvalidHeaderValue(String),
    InvalidDerivedValue(String),
    InvalidFormat(String),
    DigestError(String),
    SigningFailed(String),
    MissingHeaders,
    LabelNotFound,
    BadSignatureInput(String),
    BadKeyId,
    BadTime,
    NotYetValid,
    Expired,
    ValidityTooLong,
    ReplayableNotAllowed,
    ReplayableInvalidationRequired,
    ReplayableNotBefore,
    ReplayableInvalidated,
    NotRequestBound,
    ClassBoundNotAllowed,
    NonceWindowTooLong,
    DigestRequired,
    DigestMismatch,
    BadSignatureBytes,
    BadSignature,
    Replay,
    AlgNotAllowed,
    VerificationFailed(String),
}

Errors produced by ERC-8128 signing and verification.

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.

InvalidUrl(String)

The request URL is not absolute or cannot be parsed.

InvalidOptions(String)

Sign/verify options are invalid (e.g. expires <= created).

InvalidHeaderValue(String)

A Structured Fields value contains forbidden characters.

InvalidDerivedValue(String)

A derived component (@method, @authority, …) produced non-visible-ASCII.

InvalidFormat(String)

A required field is empty or the overall format is wrong.

DigestError(String)

content-digest handling failed during signing.

SigningFailed(String)

The signer returned an empty or malformed signature.

MissingHeaders

Signature-Input / Signature headers are missing.

LabelNotFound

The requested signature label was not found.

BadSignatureInput(String)

Signature-Input / Signature could not be parsed.

BadKeyId

The keyid does not match erc8128:<chainId>:<address>.

BadTime

created / expires are missing, non-integer, or expires <= created.

NotYetValid

Signature is not yet valid (now + skew < created).

Expired

Signature has expired (now - skew > expires).

ValidityTooLong

expires - created exceeds the policy maximum.

ReplayableNotAllowed

Replayable (nonce-less) signature rejected by policy.

ReplayableInvalidationRequired

Replayable signature accepted but no invalidation mechanism is provided. Required by ERC-8128 Section 3.2.2 + 5.2.

ReplayableNotBefore

Replayable signature rejected: created before the per-key not_before cutoff.

ReplayableInvalidated

Replayable signature explicitly invalidated by policy hook.

NotRequestBound

Signed components do not satisfy request-bound requirements.

ClassBoundNotAllowed

Signed components do not match any class-bound policy.

NonceWindowTooLong

expires - created exceeds the nonce retention window.

DigestRequired

content-digest header required by components but missing.

DigestMismatch

content-digest value does not match the body.

BadSignatureBytes

Signature bytes could not be decoded (bad base64 or empty).

BadSignature

The signature is cryptographically invalid.

Replay

The nonce has already been consumed (replay detected).

AlgNotAllowed

Algorithm is not allowed by policy.

VerificationFailed(String)

The cryptographic verification call itself failed (e.g. RPC error).

Trait Implementations

impl Debug for Erc8128Error

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

Formats the value using the given formatter.

impl Display for Erc8128Error

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

Formats the value using the given formatter.

impl Error for Erc8128Error

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.