Return a list of the signature file names (v1 Signature / JAR
        Signature)

        :rtype: List of filenames matching a Signature

def get_signature_names(self):
        """
        Return a list of the signature file names (v1 Signature / JAR
        Signature)

        :rtype: List of filenames matching a Signature
        """
        signature_expr = re.compile(r"^(META-INF/)(.*)(\.RSA|\.EC|\.DSA)$")
        signatures = []

        for i in self.get_files():
            if signature_expr.search(i):
                if "{}.SF".format(i.rsplit(".", 1)[0]) in self.get_files():
                    signatures.append(i)
                else:
                    log.warning("v1 signature file {} missing .SF file - Partial signature!".format(i))

        return signatures