TCTI-CMD(7) TPM2 Software Stack TCTI-CMD(7)
NAME
tcti-cmd - TPM2 Sub-process Command TCTI library
SYNOPSIS
A TPM Command Transmission Interface (TCTI) module for interaction with
a sub-process.
DESCRIPTION
tcti-cmd is a library that abstracts the details of direct communication
with the interface and protocol exposed by a sub-process that can re-
ceive and transmit raw TPM2 command and response buffers. The interface
exposed by this library is defined in the “TSS System Level API and TPM
Command Transmission Interface Specification” specification.
EXAMPLES
For example, if you wanted to use the tpm2_send(1) command as the sub-
process to send data to and from the TPM, one could do so like this:
tpm2_getrandom -T "cmd:tpm2_send -s" --hex 4
A more useful example would be connecting to a remote machine using ssh
and interacting with the remote machine's TPM as if it were local. This
uses tpm2_send(1) on a remote machine and uses ssh as the sub-process to
create the tunnel to the remote machine. If encrypted sessions are used,
the remote machine is blinded to the TPM data and cannot interpose on
that traffic.
tpm2_getrandom -T "cmd:ssh remotehost tpm2_send" -s --hex 4
AUTHOR
TPM2 Software Project <https://github.com/tpm2-software/tpm2-tss>
SEE ALSO
Tss2_Tcti_Device_Init(3), Tss2_Tcti_Socket_Init(3), Tss2_TctiLdr_Ini-
tialize(3), Tss2_TctiLdr_Finalize(3), tcti-device(7), tcti-socket(7),
tcti-tabrmd(7), tpm2-abrmd(8)
COLOPHON
This page is part of release 4.1.3 of Open Source implementation of the
TCG TPM2 Software Stack (TSS2). A description of the project, informa-
tion about reporting bugs, and the latest version of this page can be
found at https://github.com/tpm2-software/tpm2-tss/.
Intel MAY 2020 TCTI-CMD(7)
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