def create_sign(ia: ISD_AS, chain_ver: int, trc_ver: int) -> ProtoSign:
"""
Create ProtoSign for the specified values with ed25519 as the singing algorithm.
:param ISD_AS ia: ISD-AS of the signing AS.
:param int chain_ver: Version of the certificate authenticating the signing key.
:param int trc_ver: Version of the TRC authenticating the certificate chain.
:returns: The sign object
:rtype: ProtoSign
"""
sign = DefaultSignSrc.from_values(ia, chain_ver, trc_ver)
return ProtoSign.from_values(ProtoSignType.ED25519, sign.pack())
def from_values(cls, cpld_raw, sign=None):
if not sign:
sign = ProtoSign.from_values(ProtoSignType.NONE, b"")
return cls(cls.P_CLS.new_message(blob=cpld_raw, sign=sign.p))
def from_values(cls, cpld_raw, sig_type=ProtoSignType.NONE, sig_src=b""):
s = ProtoSign.from_values(sig_type, sig_src)
return cls(cls.P_CLS.new_message(blob=cpld_raw, sign=s.p))