2022-12-02 06:17:14 +00:00
|
|
|
# Tillitis TKey Provisioning Tool
|
2022-09-19 06:51:11 +00:00
|
|
|
|
|
|
|
|
## Introduction
|
|
|
|
|
|
2022-12-02 06:17:14 +00:00
|
|
|
TKey Provisioning Tool (tpt) is a program for generating the 32 byte
|
|
|
|
|
Unique Device Secret (UDS). The tool will also generate the 8 byte
|
|
|
|
|
Unique Device Identity. Both the UDS and the UDI are injected into the
|
|
|
|
|
FPGA bitstream file during build.
|
|
|
|
|
|
|
|
|
|
The UDS is generated using HKDF (RFC 5869), and the user is expected
|
|
|
|
|
to supply a secret as part of the input to the HKDF Extract operation.
|
|
|
|
|
The Input Keying Material is generated by extracting 256 bytes using
|
|
|
|
|
the Python secrets module.
|
2022-09-19 06:51:11 +00:00
|
|
|
|
|
|
|
|
The tool uses [python-hkdf](https://github.com/casebeer/python-hkdf).
|
