def keybundle_from_local_file(filename, typ, usage):
if typ.upper() == "RSA":
kb = KeyBundle()
k = RSA_key()
k.load(filename)
k.use = usage[0]
kb.append(k)
for use in usage[1:]:
_k = RSA_key()
_k.use = use
_k.key = k.key
kb.append(_k)
elif typ.lower() == "jwk":
kb = KeyBundle(source=filename, fileformat="jwk", keyusage=usage)
else:
raise Exception("Unsupported key type")
return kb
