Struct SoftwareSigner 

pub struct SoftwareSigner { /* private fields */ }

In-process Ed25519 signer holding the raw 32-byte seed (the default key custody mode; HSM-backed custody is S34). The seed is wrapped in zeroize::Zeroizing so it is wiped on drop. Behaviour-identical to sign_event_ed25519 for the same seed + kid — see sign_event_with.

Implementations

impl SoftwareSigner

pub fn from_seed( kid: impl Into<String>, seed: [u8; 32], ) -> Result<Self, CellosError>

Build a signer from a raw 32-byte Ed25519 seed and a kid. The public key is derived once via the active provider’s adapter and cached.

Errors

Returns an error if the seed cannot be turned into a valid keypair.

Trait Implementations

impl Signer for SoftwareSigner

fn kid(&self) -> &str

The signer key id (kid) stamped into the envelope’s signerKid.

fn sign(&self, message: &[u8]) -> Result<[u8; 64], CellosError>

Sign message, returning the raw 64-byte Ed25519 signature.

fn verifying_key(&self) -> TrustAnchorPublicKey

The public verifying key, for building a verifier-side keyring entry.