// This function is intended to be used by system components and admin
// utilities: userland programs do not know the permissionSecret.
func VerifySignature(signedLocator, apiToken string, blobSignatureTTL time.Duration, permissionSecret []byte) error {
// This function is intended to be used by system components and admin
// utilities: userland programs do not know the permissionSecret.
func VerifySignature(signedLocator, apiToken string, blobSignatureTTL time.Duration, permissionSecret []byte) error {