Re: [Trustedjava-support] FIrst Application - having problems

[Martin P. <Mar...@ia...>]

Donnie . wrote:
> I have recently started working on jTss with TPM Emulator.
> Unable to open TPM device file /dev/tpm. Reason: /dev/tpm (Input/output error).
> Though I have changed the permissions of /dev/tpm* by using the command chmod 777, but still its not working.

The TPM emulator kernel module connects to the user space
daemon, communicating via (usually) /var/run/tpm/tpmd_socket:0
You need to set proper directory plus permissions for this, too.
Note: This most likely does not survive a reboot.

>I hav to import only the related libraries from jTss folder

You need at least iaik_jtss_tsp.jar and iaik_jtss_tcs.jar, plus their
.ini files (placed into the same directory) to talk to the TPM.

HTH,
Martin