Enum Algorithm 

#[non_exhaustive]
pub enum Algorithm {
    RsaSha256,
    Ed25519,
}

Algorithm identifier for a signing / verifying key.

The lexical name() strings match the values that appear in the algorithm= parameter of a Cavage Signature: header.

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.

RsaSha256

RSA PKCS#1 v1.5 with SHA-256, used by Mastodon’s default actor key.

Ed25519

Ed25519 (EdDSA over Curve25519).

Implementations

impl Algorithm

pub const fn name(self) -> &'static str

Returns the Cavage-compatible lexical name for this algorithm.

pub fn parse(name: &str) -> Result<Option<Self>, Error>

Parses a Cavage / RFC 9421-compatible name back into an Algorithm.

Accepts both naming conventions in use across the Fediverse:

• Cavage draft-12 rsa-sha256, ed25519, ed25519-sha512
• RFC 9421 §3.3.2 rsa-v1_5-sha256
• Legacy hs2019 (Mastodon), which requests auto-detection from the key itself — returned as Ok(None).

Errors

Returns Error::UnsupportedAlgorithm for anything else.

Trait Implementations

impl Clone for Algorithm

fn clone(&self) -> Algorithm

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Algorithm

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

Formats the value using the given formatter.

impl Hash for Algorithm

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Algorithm

fn eq(&self, other: &Algorithm) -> 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 Algorithm

impl Eq for Algorithm

impl StructuralPartialEq for Algorithm