Simon Hosie

Title: Innovations of Simon Hosie

Introduction

Simon Hosie is a notable inventor based in Santa Clara, California. He has made significant contributions to the field of technology, particularly in the area of authentication and instruction encoding. With a total of four patents to his name, Hosie's work has implications for enhancing security and efficiency in computing systems.

Latest Patents

One of Simon Hosie's latest patents is titled "Call path dependent authentication." This invention involves maintaining a call path identifier that is permuted in response to a calling instruction for calling a target function, based on a function return address. The call path identifier serves as a modifier value for generating and checking authentication codes associated with source values. If an expected authentication code does not match a previously generated authentication code for a source value, an error handling response is triggered. This innovation is particularly useful for preventing attacks that exploit valid address pointers in different parts of the code.

Another significant patent by Hosie focuses on "Encoding instructions identifying first and second architectural register numbers." This patent discusses various encoding schemes aimed at more efficiently encoding instructions that identify these register numbers. In one example, constraining the first architectural register number to be greater than the second allows for more efficient use of encodings for other operations. In another example, the selection of processing operations is based on a comparison of the first and second architectural register numbers.

Career Highlights

Simon Hosie is currently employed at Arm Limited, a company known for its innovative technology solutions. His work at Arm Limited has allowed him to explore and develop cutting-edge technologies that enhance the performance and security of computing systems.

Collaborations

Throughout his career, Simon has collaborated with talented individuals such as Jørn Nystad and Jacob Eapen. These collaborations have contributed to the advancement of technology and the successful development of innovative solutions.

Conclusion

Simon Hosie's contributions to the field of technology through his patents and work at Arm Limited highlight his role as a significant inventor. His innovations in authentication and instruction encoding continue to influence the industry and enhance the security and efficiency of computing systems.