"""Domain errors for Agent authentication."""


class AgentAuthenticationError(Exception):
    """Base Agent authentication error."""


class AgentAuthenticationUnavailable(AgentAuthenticationError):
    """Agent authentication cannot currently be performed."""


class AgentAuthenticationFailed(AgentAuthenticationError):
    """The supplied Agent secret is invalid."""


class AgentIdentityUnauthorized(AgentAuthenticationError):
    """The supplied Agent identity is not authorized."""


class AgentCredentialRevoked(AgentAuthenticationError):
    """The Agent's permanent credential has been revoked."""