Xiaosen Liu

Title: Innovations of Xiaosen Liu in Cryptographic Technologies

Introduction

Xiaosen Liu is a prominent inventor based in Portland, OR, known for his significant contributions to cryptographic technologies. With a total of 10 patents to his name, Liu has made remarkable advancements in the field, particularly in enhancing the security of cryptographic engines against side-channel attacks.

Latest Patents

Liu's latest patents include innovative methods for time and frequency domain side-channel leakage suppression using integrated voltage regulators. One notable patent describes an apparatus designed to resist side-channel attacks on cryptographic engines. This apparatus features a cryptographic block connected to a non-linear low-dropout voltage regulator (NL-LDO). The NL-LDO is equipped with a scalable power train that provides variable load current to the cryptographic block, along with randomization circuitry for generating randomized values to set various parameters. The controller within the system adjusts the variable load current based on the current voltage of the cryptographic block, optimizing performance under different voltage conditions.

Another significant patent focuses on hybrid regulators that achieve high power supply rejection ratios and conversion efficiency. This patent outlines methods and systems for hybrid low dropout regulator (LDO) architecture, which utilizes multiple feedback loops to enhance performance. The hybrid LDO is designed to work with dual rails for its analog and digital branches, ensuring high efficiency and reliability.

Career Highlights

Xiaosen Liu is currently employed at Intel Corporation, where he continues to push the boundaries of innovation in cryptographic technologies. His work has not only contributed to the advancement of secure computing but has also positioned him as a key figure in the field of electrical engineering.

Collaborations

Liu has collaborated with notable colleagues such as Harish Krishnamurthy and Krishnan Ravichandran, further enhancing the impact of his work through teamwork and shared expertise.

Conclusion

Xiaosen Liu's innovative patents and contributions to cryptographic technologies underscore his role as a leading inventor in the field. His work at Intel Corporation continues to influence the landscape of secure computing, making significant strides in protecting sensitive information.