approvalcrypto

var (
	ErrInvalidKeyProvider = errors.New("invalid approval key provider")
	ErrInvalidKeyMaterial = errors.New("invalid approval key material")
	ErrInvalidEnvelope    = errors.New("invalid approval ciphertext envelope")
	// ErrKeyMaterialChanged reports that the key stored under the envelope's
	// key id is not the key that encrypted it, for example because a deleted
	// keychain item was regenerated. The checkpoint cannot be recovered.
	ErrKeyMaterialChanged = errors.New("approval key was replaced since the checkpoint was encrypted")
)

var (
	ErrKeyMaterialUnavailable = errors.New("approval key material unavailable")
)