Enum SignatureAlgorithm 

#[non_exhaustive]
pub enum SignatureAlgorithm {
    EcdsaP256,
    EcdsaP384,
    RsaPss2048,
    Ed25519,
}

Signature algorithm for delegation links.

Default recommendation: SignatureAlgorithm::EcdsaP256 — compact signature (~64 bytes), fast verify on edge hardware.

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.

EcdsaP256

ECDSA with P-256 + SHA-256, fixed-length encoding (64-byte sig).

EcdsaP384

ECDSA with P-384 + SHA-384, fixed-length encoding (96-byte sig).

RsaPss2048

RSA-PSS with a 2048-bit key + SHA-256 (256-byte sig).

Ed25519

Ed25519 (64-byte sig).

Implementations

impl SignatureAlgorithm

pub const fn wire_id(self) -> u8

Wire ID for the deterministic sign-input layout.

pub const fn from_wire_id(id: u8) -> Option<Self>

Decode from the wire ID; None for an unknown algorithm.

pub const fn expected_signature_len(self) -> Option<usize>

Expected signature length in bytes (fixed) or None for variable (RSA-PSS depending on key size — we fix it at 2048 and thus 256 bytes).

Trait Implementations

impl Clone for SignatureAlgorithm

fn clone(&self) -> SignatureAlgorithm

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SignatureAlgorithm

impl Debug for SignatureAlgorithm

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

Formats the value using the given formatter.

impl Eq for SignatureAlgorithm

impl Hash for SignatureAlgorithm

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 SignatureAlgorithm

fn eq(&self, other: &SignatureAlgorithm) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for SignatureAlgorithm