NatsNKey

@override
def get_requirement(self) -> list[dict[str, Any]]:
    """Get the AsyncAPI requirement for NATS NKey authentication."""
    return [{"nats-nkey": []}]

@override
def get_schema(self) -> dict[str, dict[str, Any]]:
    """Get the AsyncAPI schema for NATS NKey authentication."""
    return {
        "nats-nkey": {
            "type": "asymmetricEncryption",
            "description": (
                "NATS NKey challenge-response authentication using an "
                "Ed25519 signature."
            ),
            "x-nats-auth": "nkey",
            "x-nats-algorithm": "ed25519",
        },
    }

@classmethod
def from_file(
    cls,
    seed_file: str | Path,
    *,
    ssl_context: "SSLContext | None" = None,
    use_ssl: bool | None = None,
    tls_hostname: str | None = None,
    tls_handshake_first: bool = False,
) -> Self:
    """Load a NATS NKey seed file."""
    return cls(
        seed_file,
        ssl_context=ssl_context,
        use_ssl=use_ssl,
        tls_hostname=tls_hostname,
        tls_handshake_first=tls_handshake_first,
    )

@classmethod
def from_seed(
    cls,
    seed: str,
    *,
    ssl_context: "SSLContext | None" = None,
    use_ssl: bool | None = None,
    tls_hostname: str | None = None,
    tls_handshake_first: bool = False,
) -> Self:
    """Use a raw NATS NKey seed."""
    if not seed:
        msg = "NATS NKey seed cannot be empty."
        raise ValueError(msg)

    security = cls(
        seed,
        ssl_context=ssl_context,
        use_ssl=use_ssl,
        tls_hostname=tls_hostname,
        tls_handshake_first=tls_handshake_first,
    )
    security.seed_is_file = False
    return security