The patented QDID PUF by Crypto Quantique utilizes quantum tunneling current variations to produce a unique identity in standard CMOS processes. This solution leverages oxide thickness variations and trap distributions in the gate oxide to create an unpredictable and unclonable physically unclonable function (PUF). As a hardware root-of-trust, it simplifies secure provisioning and emits high-entropy seeds resistant to side-channel attacks, supporting up to 256-bit security strength. The QDID PUF's robustness is confirmed through extensive testing, including adherence to NIST standards, making it an ideal choice for secure device identity and post-quantum cryptographic applications.
