LetsTrust

This site collect usefull scripts, links and TPM2 related stuff. Most relatet to the LetsTrust-TPM module for the Raspberry Pi

News

With Raspbian Stretch Kernel 4.14.85 you'll get the TPM 2.0 support build in!

Six easy steps to activate your TPM on the Rapsberry Pi:

• Step one:
  • Open a (whatever) term on your Pi.
• Step two:
  • run a "sudo rpi-update"
• Step three:
  • open the /boot/config.txt with "sudo nano /boot/config.txt"
  • activate SPI with
    • "dtparam=spi=on"
  • and load the TPM device tree overlay with
    • "dtoverlay=tpm-slb9670"
• Step four:
  • plug your LetsTrust-TPM on the right position and reboot your Raspberry Pi
• Step fife:
  • Open a (whatever) term on your Pi and type "ls /dev/tpm0" and /dev/tpmrm0 will appear in yellow letters!
• Step six:
  • Be happy about your success!

Scripts

• tpm2_all.sh

  • Installs the dependencies for the tpm2-tss, tpm2-abrmd and tpm2-tools [1].
  • Provide a complete clear of your TPM (line 46 out comment)
  • Provide a RSA encrypt and RSA decrypt example.
  • Provide an ECC sign example

• How to patch a kernel (folder)

  • Inlcude some scripts to patch your kernel, example for the Raspbian

• TPM_reset_with_GPIO.sh

  • Reset the LetsTrust TPM with a pintoggle, only for development!

  [1] https://github.com/tpm2-software