Abstract: The present invention discloses a system for entangling multiple root keys with multiple arbitrary user-defined and self-generated input data using a Physically Unclonable Function (PUF) and a proposed digital algorithmic system. The key innovation lies in the combination of a PUF-based dynamically measurable entropy source and the proposed invention, enabling the generation of multiple true random keys. These keys serve as a secure foundation for establishing cryptographic channels, allowing the creation of isolated secure channels for different stakeholders and applications. The ability to create isolated secure channels with multiple root keys enables the establishment of multiple roots of trust, enhancing the integrity and security of cryptographic operations. The invention finds applications in various domains, such as FIDO authentications, point-to-point encryptions, crypto wallets, and encryption key management systems.

Abstract: An electronic device interfaced with a multiple digital signatures security engine, internally or externally, which enable the device to obtain PUF-based security credentials with the option to generate multiple unique digital signatures from the same source of PUF entropy. The multiple digital signatures security zone includes a source of PUF entropy dynamically measurable, a non-volatile memory storage media and a digital circuitry performing all the functions requested by the electronic device interfaced. The electronic device is able to select and switch between which unique digital signature to be involved for its related cybersecurity applications without depending on power-up sequences or single time operations after power-up sequence.

Abstract: An IC for adaptive PUF stabilization process includes a PUF stabilizer and a non-volatile memory. The PUF stabilizer has PUF units, a statistic processor, a majority voting generator, and a dark-bit masker. The statistic processor is connected to the PUF units, and performs measurements on the PUF units to output results. The majority voting generator is connected to the statistic processor to accumulate the results into a statistic result, which is output as a PUF bit. The dark-bit masker is connected to the PUF units, and marks unstable PUF units bit as dark-bit and create dark-bit masks. The non-volatile memory is connected to the PUF stabilizer to store the dark-bit masks, and the dark-bits are replaced by specific bit sequences provided by the PUF stabilizer. This decreases bit error rates of the PUF measurement results, and allows customization of the quantity of dark bits per dark-bit mask used.

Abstract: A triggerable circuitry for a Physically Unclonable Function (PUF) source and true random number generator comprises an array of metastable latches PUF cells units that produce output states in racing configuration dependent on manufacturing variations and noise fed into a counting circuit. The technology as a single circuit extracts detected random bits' states for true random numbers generation, different each time when requested, and is able to feed a PUF recovery system that will use the fairly static bits' patterns of the measured circuit although each time different.