I have a https connection from Client to Server and a malware in client. The malware modifies the message and compromises its integrity. I am using a proxy to check the Integrity of the message after the malware has changed the message and before sending it over the internet to the server.

Now, How can I check the Integrity of the message (Sure that it has not been modified by any Man in the Middle) for the second half of my communication channel(Which is from Client to the Server over the internet).

I see few conventional approaches of CRC or Checksum will help. But I am looking for some non traditional or upcoming approaches. I am new to this area and want to take expert advise about the direction I need to search for answer to my question.

Any pointers would be of great help.