Location History:
- Tokyo, JP (2013 - 2019)
- Kanagawa, JP (2007 - 2021)
Company Filing History:
29 out of 58,132 
2 out of 1,799 
1 out of 62 
Years Active: 2007-2021
Title: The Innovations of Kyoji Shibutani: A Pioneer in Encryption Technology
Introduction: Kyoji Shibutani, based in Kanagawa, Japan, has made significant contributions to the field of encryption through his innovative inventions. With a remarkable portfolio consisting of 31 patents, Shibutani has established himself as a leader in developing advanced encryption and decryption devices, pushing the boundaries of data security.
Latest Patents: Among his latest inventions are several pivotal patents related to encryption and decryption devices and methods. One notable patent describes an encryption device designed to suppress calculations in the reverse direction within a whitebox model encryption. This device features a predetermined relationship that outputs multiple values from plain text inputs, some of which are funneled into a trapdoor one-way function. This innovative approach ensures that the trapdoor one-way function remains secure, as it cannot decrypt data without knowledge of the trapdoor.
Another significant invention is his encryption processing device, which incorporates a unique encryption processing section. This section performs round operations on input data while integrating a key scheduling mechanism that supplies the necessary round keys. The encryption processing method utilizes an involution property, allowing for an elegant execution of data conversion that enhances both efficiency and security.
Career Highlights: Kyoji Shibutani has had an impressive career with key positions in reputable companies. He worked for Sony Corporation and Sony Computer Entertainment Inc., where he was instrumental in furthering technological advancements in encryption. His tenure at these organizations allowed him to collaborate on groundbreaking projects that have significantly increased the security of digital data.
Collaborations: Throughout his professional journey, Shibutani has worked alongside talented individuals such as Taizo Shirai and Toru Akishita. These collaborations have fostered an innovative environment that has led to the development of notable projects in encryption technology.
Conclusion: Kyoji Shibutani's work is essential in the field of encryption, showcasing his ability to create inventions that enhance data security. With his impressive list of patents and collaborations, Shibutani continues to be an influential figure in the realm of technological advancements, contributing valuable insights and innovations that pave the way for a more secure digital future.