Class KeyAttestationStatement

scapy/layers/tpm.py:669–729

class KeyAttestationStatement(Packet):
    fields_desc = [
        StrFixedLenField("Magic", b"KAST", length=4),
        LEIntField("Version", 1),
        LEIntEnumField("Platform", 2, _PCP_TYPE),
        LEIntField("HeaderSize", 0),
        LEIntField("cbIdBinding", 0),
        LEIntField("cbKeyAttestation", 0),
        LEIntField("cbAIKOpaque", 0),
        MultipleTypeField(
            [
                (
                    PacketLenField(
                        "idBinding",
                        PCP_IDBinding20(),
                        PCP_IDBinding20,
                        length_from=lambda pkt: pkt.cbIdBinding,
                    ),
                    lambda pkt: pkt.Platform == 2,
                )
            ],
            StrLenField(
                "idBinding",
                b"",
                length_from=lambda pkt: pkt.cbIdBinding,
            ),
        ),
        PacketLenField(
            "keyAttestation",
            KeyAttestation(),
            KeyAttestation,
            length_from=lambda pkt: pkt.cbKeyAttestation,
        ),
        MultipleTypeField(
            [
                (
                    PacketLenField(
                        "aikOpaque",
                        PCP_20_KEY_BLOB(),
                        PCP_20_KEY_BLOB,
                        length_from=lambda pkt: pkt.cbAIKOpaque,
                    ),
                    lambda pkt: pkt.Platform == 2,
                ),
                (
                    PacketLenField(
                        "aikOpaque",
                        PCP_KEY_BLOB(),
                        PCP_KEY_BLOB,
                        length_from=lambda pkt: pkt.cbAIKOpaque,
                    ),
                    lambda pkt: pkt.Platform == 1,
                ),
            ],
            StrLenField(
                "aikOpaque",
                b"",
                length_from=lambda pkt: pkt.cbAIKOpaque,