Class KeyAttestation

scapy/layers/tpm.py:605–666

class KeyAttestation(Packet):
    fields_desc = [
        StrFixedLenField("Magic", b"KADS", length=4),
        LEIntEnumField("Platform", 2, _PCP_TYPE),
        LEIntField("HeaderSize", 0),
        LEIntField("cbKeyAttest", 0),
        LEIntField("cbSignature", 0),
        LEIntField("cbKeyBlob", 0),
        MultipleTypeField(
            [
                (
                    PacketLenField(
                        "keyAttest",
                        TPMS_ATTEST(),
                        TPMS_ATTEST,
                        length_from=lambda pkt: pkt.cbKeyAttest,
                    ),
                    lambda pkt: pkt.Platform == 2,
                )
            ],
            StrLenField(
                "keyAttest",
                b"",
                length_from=lambda pkt: pkt.cbKeyAttest,
            ),
        ),
        StrLenField(
            "signature",
            b"",
            length_from=lambda pkt: pkt.cbSignature,
        ),
        MultipleTypeField(
            [
                (
                    PacketLenField(
                        "keyBlob",
                        PCP_20_KEY_BLOB(),
                        PCP_20_KEY_BLOB,
                        length_from=lambda pkt: pkt.cbKeyBlob,
                    ),
                    lambda pkt: pkt.Platform == 2,
                ),
                (
                    PacketLenField(
                        "keyBlob",
                        PCP_KEY_BLOB(),
                        PCP_KEY_BLOB,
                        length_from=lambda pkt: pkt.cbKeyBlob,
                    ),
                    lambda pkt: pkt.Platform == 1,
                ),
            ],
            StrLenField(
                "keyBlob",
                b"",
                length_from=lambda pkt: pkt.cbKeyBlob,
            ),
        ),