Hello,

https://pulsesecurity.co.nz/articles/TPM-sniffing
In this article, can see that communication with the TPM is vulnerable to sniffing if not careful.

https://tpm2-software.github.io/2020/04/13/Disk-Encryption.html
Is the disk encryption described in tpm2-software's blog safe against these attacks?

  1. tpm2_createprimary -Q -C o -c prim.ctx
  2. dd if=/dev/urandom bs=1 count=32 status=none | tpm2_create -Q -g sha256 -u seal.pub -r seal.priv -i- -C prim.ctx
  3. tpm2_load -Q -C prim.ctx -u seal.pub -r seal.priv -n seal.name -c seal.ctx
  4. tpm2_evictcontrol -C o -c seal.ctx 0x81010001

My question is:
    1. Is there a tool in linux that can sniff communication with the current system's TPM?
    2. How to encrypt communications if the methods described above are not secure?
        It seems that encryption is possible through tpm2_startauthsession , but I do not know how to apply it to tpm2_create . (The -S option simply did not work.)

Thank you.