Enum Algorithm 

#[non_exhaustive]
pub enum Algorithm<'a, 'parameters> {
    RsaPkcs1v15(Algorithm),
    RsaPss(&'parameters Parameters<'a>),
    Dsa(Algorithm),
    Ecdsa(Algorithm),
    Ed25519,
    Ed448,
    MlDsa(ParameterSet),
}

A recognized signature structure, not backend support or authorization.

Fixed digests are implied by the signature OID; no encoded digest identifier is fabricated. The caller keeps the original signature identifier for provenance, provider dispatch and unsupported-algorithm diagnostics.

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.

RsaPkcs1v15(Algorithm)

RSA PKCS#1 v1.5 with the indicated digest.

RsaPss(&'parameters Parameters<'a>)

Original PSS parameters, without narrowing integers or choosing a backend.

Dsa(Algorithm)

DSA with SHA-1, SHA-224 or SHA-256.

Ecdsa(Algorithm)

ECDSA with the indicated digest.

Ed25519

Pure Ed25519: not Ed25519ph or Ed25519ctx.

Ed448

Pure Ed448: not Ed448ph.

MlDsa(ParameterSet)

Pure ML-DSA; certificate/CRL verification requires an empty context. This does not authorize HashML-DSA or imply a finalized-message digest.

Trait Implementations

impl<'a, 'parameters> Clone for Algorithm<'a, 'parameters>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a, 'parameters> Copy for Algorithm<'a, 'parameters>

impl<'a, 'parameters> Debug for Algorithm<'a, 'parameters>

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

Formats the value using the given formatter.