在PtReceive中解迷出错, 请大侠们帮忙!啊!

我在MPSend中把数据加密后发送出去,在接受端的PtReceive中已经成功接受到加密了的数据.

PtReceive的过程是
1->拷贝Packet 数据到MyBuffer中
2->解迷MyBuffer中的数据(可以确认的 是我已经正确的收到应该收到的加密数据AAA,也解迷成功,数据变成了BBB)
3->重新计算校验和
4->NdisDprAllocatePacket
5->NdisAllocateBuffer
6->NdisChainBufferAtBack
7->拷贝原始Packet信息到MyPacket中
8->NdisMIndicateReceivePacket
9->释放申请空间
最后的结果是,应用程序收到了未解迷的数据,即是收到了AAA,按理说应该收到的是BBB,请问哪儿没有处理好啊?

奉献一段代码,以表感谢!!
void ICMPCheckSum(UC *IPBuf)
{
  ULONG sum=0;
  UC *ICMPBuf,*ICMPBuf2;
  UI ICMPLen,IPLen;

  IPLen=(IPBuf[0]&0X0F)*4;
  ICMPBuf=IPBuf+IPLen;
  ICMPBuf2=ICMPBuf;
  ICMPLen=IPBuf[2];
  ICMPLen=((ICMPLen<<8)&0xFF00)+IPBuf[3]-IPLen;

  ICMPBuf[2]=0;ICMPBuf[3]=0;            //Clear CheckSum
  while(ICMPLen>1)
  {
    sum+=*((UI *)ICMPBuf);
    ICMPBuf+=2;ICMPLen-=2;
  }
  if(ICMPLen) sum+=*ICMPBuf;

  sum=(sum&0xffff)+((sum>>16)&0xFFFF);
  sum=(sum&0xffff)+((sum>>16)&0xFFFF);
  sum=~sum;

  ICMPBuf2[2]=(UCHAR)sum&0xFF;
  ICMPBuf2[3]=(UCHAR)(sum>>8)&0xFF;
}

第7部的时候，你复制了哪些信息？不要使用
MyPacket->Private.Head = Packet->Private.Head;
MyPacket->Private.Tail = Packet->Private.Tail;
这会把原来的数据包内容也传给上面。

我的程序如下,问题就是还是 不能够把我解密了的数据发到上层应用程序啊..请问哪儿有问题呢?
ASSERT(Packet);
if (Packet==0)
return NDIS_STATUS_SUCCESS;

NdisQueryPacket(Packet, NULL, NULL,NULL, &PacketLen);
Status=NdisAllocateMemoryWithTag(&PacketMemory,PacketLen,TAG);
    
if(NDIS_STATUS_SUCCESS!=Status)
    return Status;

CopyPacketToBuffer(PacketMemory,Packet,0,PacketLen);
ret = (UCHAR)DecrptBuffer((char*)(((char*)PacketMemory)+54), (PacketLen-54)) ;
    
CalculateIPChecksum( (PVOID)((char*)PacketMemory+MAC_HEADER_LEN),ret);
CalculateTcpChecksum((PVOID)((char*)PacketMemory+MAC_HEADER_LEN), ret);
                
/*ASSERT(FillLen<=16);*/
//当调用者运行在IRQL DISPATCH_LEVEL下，分配和初始化一个包描述符
NdisDprAllocatePacket(&Status,&MyPacket,pAdapt->RecvPacketPoolHandle);
if(Status != NDIS_STATUS_SUCCESS)
{
    NdisFreeMemory(PacketMemory,PacketLen,0);
    return NDIS_STATUS_RESOURCES;
}
NdisAllocateBuffer(&Status,&PacketBuffer,pAdapt->RecvPacketPoolHandle,
    PacketMemory,PacketLen);
if (Status!=NDIS_STATUS_SUCCESS)
{
    NdisDprFreePacket(MyPacket);
    NdisFreeMemory(PacketMemory,PacketLen,0);
    return Status;
}
RecvRsvd = (PRECV_RSVD)(MyPacket->MiniportReserved);
RecvRsvd->OriginalPkt = MyPacket;

NdisChainBufferAtFront(MyPacket,PacketBuffer);

    
NdisMoveMemory(NDIS_OOB_DATA_FROM_PACKET(MyPacket),NDIS_OOB_DATA_FROM_PACKET(Packet),
sizeof(NDIS_PACKET_OOB_DATA));
NDIS_SET_ORIGINAL_PACKET(MyPacket, NDIS_GET_ORIGINAL_PACKET(Packet));
NdisGetPacketFlags(MyPacket) = NdisGetPacketFlags(Packet);  // Set Packet Flags
NDIS_SET_PACKET_STATUS(MyPacket, NDIS_STATUS_RESOURCES);
NDIS_SET_PACKET_HEADER_SIZE(MyPacket, HeaderBufferSize);
ASSERT(pAdapt->MiniportHandle && MyPacket);
NdisMIndicateReceivePacket(pAdapt->MiniportHandle, &MyPacket, 1);
ASSERT(NDIS_GET_PACKET_STATUS(MyPacket) == NDIS_STATUS_RESOURCES);

我现在也出现这个问题，不知道楼主有没有解决，能不能讲明解决的方法！万分感激！