vendor c/image v5.4.2

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

vendor/github.com/containers/ocicrypt/keywrap/keywrap.go

@@ -26,15 +26,23 @@ type KeyWrapper interface {
 	WrapKeys(ec *config.EncryptConfig, optsData []byte) ([]byte, error)
 	UnwrapKey(dc *config.DecryptConfig, annotation []byte) ([]byte, error)
 	GetAnnotationID() string
+
+	// NoPossibleKeys returns true if there is no possibility of performing
+	// decryption for parameters provided.
+	NoPossibleKeys(dcparameters map[string][][]byte) bool
+
 	// GetPrivateKeys (optional) gets the array of private keys. It is an optional implementation
 	// as in some key services, a private key may not be exportable (i.e. HSM)
+	// If not implemented, return nil
 	GetPrivateKeys(dcparameters map[string][][]byte) [][]byte
 
 	// GetKeyIdsFromPacket (optional) gets a list of key IDs. This is optional as some encryption
 	// schemes may not have a notion of key IDs
+	// If not implemented, return the nil slice
 	GetKeyIdsFromPacket(packet string) ([]uint64, error)
 
 	// GetRecipients (optional) gets a list of recipients. It is optional due to the validity of
 	// recipients in a particular encryptiong scheme
+	// If not implemented, return the nil slice
 	GetRecipients(packet string) ([]string, error)
 }