Enum ProviderCapability 

#[non_exhaustive]
pub enum ProviderCapability<'a> {
    Encapsulate(KeyEncapsulationAlgorithm),
    Decapsulate(KeyEncapsulationAlgorithm),
    Digest(DigestAlgorithm),
    Sign(SignatureAlgorithm),
    Verify(SignatureAlgorithm),
    VerifyCertificate(X509SignatureAlgorithm),
    Encrypt(DataEncryptionAlgorithm),
    Decrypt(DataEncryptionAlgorithm),
    KeyWrap(KeyWrapAlgorithm),
    KeyUnwrap(KeyWrapAlgorithm),
    KeyTransport(&'a RsaOaepParameters),
    KeyRecovery(&'a RsaOaepParameters),
    KeyAgreement(&'a KeyAgreementParameters<'a>),
    Kdf(&'a KdfParameters<'a>),
    Random,
}

One exact provider capability, including operation-specific parameters.

Capability discovery describes mechanisms, not policy permission. Callers must still apply the immutable operation policy before provider dispatch.

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.

Encapsulate(KeyEncapsulationAlgorithm)

Exact KEM parameter set, independent of algorithm permission.

Decapsulate(KeyEncapsulationAlgorithm)

Exact KEM parameter set for private-key decapsulation.

Digest(DigestAlgorithm)

Message digest computation for an XMLDSig digest method.

Sign(SignatureAlgorithm)

Provider dispatch for an XMLDSig signing method.

The opaque signing key remains responsible for accepting the method and implementing its primitive.

Verify(SignatureAlgorithm)

Provider dispatch for an XMLDSig verification method.

The opaque verification key remains responsible for accepting the method and implementing its primitive.

VerifyCertificate(X509SignatureAlgorithm)

X.509 signature verification with complete algorithm parameters.

Encrypt(DataEncryptionAlgorithm)

XMLEnc content encryption.

Decrypt(DataEncryptionAlgorithm)

XMLEnc content decryption.

KeyWrap(KeyWrapAlgorithm)

RFC 3394 key wrapping.

KeyUnwrap(KeyWrapAlgorithm)

RFC 3394 key unwrapping.

KeyTransport(&'a RsaOaepParameters)

RSA-OAEP key transport with complete digest, MGF, and label parameters.

KeyRecovery(&'a RsaOaepParameters)

RSA-OAEP key recovery with complete digest, MGF, and label parameters.

KeyAgreement(&'a KeyAgreementParameters<'a>)

Provider-defined key agreement identified by its standard URI.

Kdf(&'a KdfParameters<'a>)

Provider-defined key derivation identified by its standard URI.

Random

Cryptographically secure random byte generation.

Implementations

impl ProviderCapability<'_>

pub const fn operation(&self) -> ProviderOperation

Operation category used in diagnostics.

pub fn algorithm(&self) -> Option<&str>

Standard algorithm identifier used in unsupported-operation errors.

Trait Implementations

impl<'a> Clone for ProviderCapability<'a>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for ProviderCapability<'a>

impl<'a> Debug for ProviderCapability<'a>

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

Formats the value using the given formatter.