mutator

var (
	// MaxMutationSize represent the maximum allowed mutation size in bytes.
	MaxMutationSize = 16 * 1024
	// ErrReplay occurs when two mutations acting on the same entry & epoch
	// occur.
	ErrReplay = errors.New("mutation replay")
	// ErrSize occurs when the mutation size is larger than the allowed upper
	// bound.
	ErrSize = errors.New("mutation: too large")
	// ErrPreviousHash occurs when the mutation the hash of the previous
	// entry provided in the mutation does not match the previous entry
	// itself.
	ErrPreviousHash = errors.New("mutation: previous entry hash does not match the hash provided in the mutation")
	// ErrMissingKey occurs when a mutation does not have authorized keys.
	ErrMissingKey = errors.New("mutation: missing authorized key(s)")
	// ErrInvalidSig occurs when either the current or previous update entry
	// signature verification fails.
	ErrInvalidSig = errors.New("mutation: invalid signature")
	// ErrUnauthorized occurs when the mutation has not been signed by a key in the
	// previous entry.
	ErrUnauthorized = errors.New("mutation: unauthorized")
)