A Generation and Recovery Framework for Silicon PUFs based Cryptographic Key

Integrated Circuits (ICs) and electronic devices became the main part of human
daily life (mobile, home, car, etc). However, for the safety of the transported information to
and from these devices, some speci cs security measures should be taken. In general, ICs are
a source of high randomness due to the manufacturing variation process which elects them
to be potential physically unclonable functions (PUFs) and known as Silicon PUFs (SPUFs).
Many propositions have shown that SPUFs could guarantee the three pillars of security:
con dentiality, authenticity, and privacy of the user information by these devices. More importantly,
extracting strong cryptographic keys from them, error correction, and hashing code
techniques should be considered. Unfortunately concerning Silicon PUFs, generating many
time the same response for the same input is not possible due to many factors especially environmental
variables such as noise, supply voltage, temperature and aging. To overcome this
issue and recover the original response from the noisy one, a secure sketch based approach is
recommended. This paper proposes a framework that generates easily the cryptographic keys
and e ciently recovers them for a Silicon PUF. The experiments have been validated on an
Arbiter PUF under di erent temperatures.