Unauthenticated sender, no pre-shared secret (RFC 9180: mode_base)
Authentication using a pre-shared secret (RFC 9180: mode_psk)
Sender authentication using a KEM keypair (RFC 9180: mode_auth)
Authentication using both pre-shared secret and KEM keypair (RFC 9180: mode_auth_psk)
Returns a representation of an immutable list of all enum entries, in the order they're declared.
RFC 9180: mode_id
Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
Returns an array containing the constants of this enum type, in the order they're declared.