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9 lines
605 B
Markdown
9 lines
605 B
Markdown
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# Tillitis Key Provisioning Tool
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## Introduction
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Tillis Key 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.
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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.
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The tool uses [python-hkdf](https://github.com/casebeer/python-hkdf).
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