Class _ESPPlain

scapy/layers/ipsec.py:178–198

Internal class to represent unencrypted ESP packets.

class _ESPPlain(Packet):
    """
    Internal class to represent unencrypted ESP packets.
    """
    name = 'ESP'

    fields_desc = [
        XIntField('spi', 0x0),
        IntField('seq', 0),

        StrField('iv', ''),
        PacketField('data', '', Raw),
        StrField('padding', ''),

        ByteField('padlen', 0),
        ByteEnumField('nh', 0, IP_PROTOS),
        StrField('icv', ''),
    ]

    def data_for_encryption(self):
        return raw(self.data) + self.padding + struct.pack("BB", self.padlen, self.nh)  # noqa: E501


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