Struct VerifierKey 

pub struct VerifierKey { /* private fields */ }

A trusted verifier key: the data needed to recognize and check signatures from one key.

Implementations

impl VerifierKey

pub fn new_ed25519(name: &str, public_key: &[u8]) -> Result<Self>

Build an Ed25519 verifier key from a name and 32-byte public key, computing the key id per the spec.

Errors

Returns Error::MalformedNote if the name is invalid or the public key is not 32 bytes.

pub fn new_hybrid(name: &str, public_key: &[u8]) -> Result<Self>

Build a hybrid composite verifier key from a name and the metamorphic-crypto public key bytes (tag || classical_pk || ml_dsa_pk), computing the key id per the spec over HYBRID_SIG_IDENTIFIER.

Errors

Returns Error::MalformedNote if the name is invalid or the public key is empty.

pub fn parse(vkey: &str) -> Result<Self>

Parse a verifier key string <name>+<hex key id>+<base64(type||key)>.

Errors

Returns Error::MalformedNote if the structure, hex id, base64, key length, or recomputed key id is invalid, or Error::MalformedNote for an unsupported signature type.

pub fn encode(&self) -> String

Encode this verifier key as a vkey string.

pub fn name(&self) -> &str

The key name.

pub fn key_id(&self) -> u32

The 4-byte key id as a big-endian u32.

pub fn signature_type(&self) -> SignatureType

The signature algorithm.

pub fn public_key(&self) -> &[u8]

The raw public key material (type identifier-stripped): the 32-byte Ed25519 key, or the metamorphic-crypto composite public key bytes (tag || classical_pk || ml_dsa_pk) for a hybrid key.

pub fn hybrid_posture_tag(&self) -> Option<u8>

For a SignatureType::MetamorphicHybrid key, the metamorphic-crypto composite posture tag — the leading byte of the composite public key that self-describes its (Suite, SecurityLevel) (e.g. 0x02 = Hybrid Cat-3). Returns None for non-hybrid keys.

This is informational only; the authoritative posture decode lives in metamorphic-crypto. It is surfaced so the Slice-5 NamespacePolicy layer can later reconcile the declared posture against this observed tag without this crate reimplementing any crypto.

Trait Implementations

impl Clone for VerifierKey

fn clone(&self) -> VerifierKey

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for VerifierKey

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

Formats the value using the given formatter.

impl Eq for VerifierKey

impl PartialEq for VerifierKey

fn eq(&self, other: &VerifierKey) -> 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 StructuralPartialEq for VerifierKey