signature

type FileBackedSignatureManager struct {
	// expected to be a path to the directory where the signature file will be written
	ConfigDir string

	SignatureFileName string
}

type SignatureManager interface {

	// get the signature for this reporting client instance
	// this function may return both a nonempty string and an error in the case
	// where we failed to load the previously-existing signature but generated a new one.
	GetSignature() (string, error)
}