Enum CertificateError

#[non_exhaustive]
pub enum CertificateError {
    BadEncoding,
    Expired,
    NotValidYet,
    Revoked,
    UnhandledCriticalExtension,
    UnknownIssuer,
    UnknownRevocationStatus,
    ExpiredRevocationList,
    BadSignature,
    NotValidForName,
    InvalidPurpose,
    ApplicationVerificationFailure,
    Other(OtherError),
}

The ways in which certificate validators can express errors.

Note that the rustls TLS protocol code interprets specifically these error codes to send specific TLS alerts. Therefore, if a custom certificate validator uses incorrect errors the library as a whole will send alerts that do not match the standard (this is usually a minor issue, but could be misleading).

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.

BadEncoding

The certificate is not correctly encoded.

Expired

The current time is after the notAfter time in the certificate.

NotValidYet

The current time is before the notBefore time in the certificate.

Revoked

The certificate has been revoked.

UnhandledCriticalExtension

The certificate contains an extension marked critical, but it was not processed by the certificate validator.

UnknownIssuer

The certificate chain is not issued by a known root certificate.

UnknownRevocationStatus

The certificate’s revocation status could not be determined.

ExpiredRevocationList

The certificate’s revocation status could not be determined, because the CRL is expired.

BadSignature

A certificate is not correctly signed by the key of its alleged issuer.

NotValidForName

The subject names in an end-entity certificate do not include the expected name.

InvalidPurpose

The certificate is being used for a different purpose than allowed.

ApplicationVerificationFailure

The certificate is valid, but the handshake is rejected for other reasons.

Other(OtherError)

Any other error.

This can be used by custom verifiers to expose the underlying error (where they are not better described by the more specific errors above).

It is also used by the default verifier in case its error is not covered by the above common cases.

Enums holding this variant will never compare equal to each other.

Trait Implementations

impl Clone for CertificateError

fn clone(&self) -> CertificateError

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for CertificateError

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

Formats the value using the given formatter.

impl From<CertificateError> for AlertDescription

fn from(e: CertificateError) -> Self

Converts to this type from the input type.

impl From<CertificateError> for Error

fn from(e: CertificateError) -> Self

Converts to this type from the input type.

impl PartialEq for CertificateError

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