Trait CaseSigner 

pub trait CaseSigner:
    Send
    + Sync
    + Debug {
    // Required methods
    fn sign_p256_sha256(&self, message: &[u8]) -> Result<[u8; 64], SignerError>;
    fn public_key(&self) -> &PublicKey;
}

Pluggable ECDSA-P256-SHA256 signer for CASE.

The in-tree concrete implementation is RingSigner, which wraps a P-256 private key and produces RFC 6979 deterministic signatures. Alternative backends (HSM, OS keychain, software key store) can implement this trait without touching core CASE code.

Required Methods

fn sign_p256_sha256(&self, message: &[u8]) -> Result<[u8; 64], SignerError>

Sign message with the NOC’s private ECDSA-P256 key. Returns raw 64-byte r||s signature (Matter wire format).

Errors

Returns SignerError if the signing operation fails (hardware unavailable, policy rejection, or internal error).

fn public_key(&self) -> &PublicKey

The 65-byte SEC1-uncompressed P-256 public key matching the NOC.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl CaseSigner for RingSigner