Enum Error 

#[non_exhaustive]
pub enum Error {
    Failed,
}

Workspace-wide failure type (v0.5 W5).

Every fallible public surface in gmcrypto-core that does not return Option / bool / subtle::CtOption returns Result<_, Error>. The single Failed variant is deliberate per the failure-mode invariant (see SECURITY.md): distinguishing failure modes leaks information to padding-oracle / invalid-curve / password-oracle attackers.

Per-module aliases keep the established import paths working: sm2::Error, pem::Error, pkcs8::Error are type aliases for this one type. Prior to v0.5 these were separate per-module enums (SignError, EncryptError, DecryptError, pem::Error, pkcs8::Error) all with a single Failed variant; v0.5 unifies them per Q5.16 in docs/v0.5-scope.md.

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.

Failed

The operation failed. No further information is exposed — distinguishing failure modes leaks attacker-useful signal.

Trait Implementations

impl Clone for Error

fn clone(&self) -> Error

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

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 Error

fn eq(&self, other: &Error) -> 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 Copy for Error

impl Eq for Error

impl StructuralPartialEq for Error