Company Filing History:
Years Active: 2001-2005
Title: **Kazuhiro Yokoyama: Innovator in Cryptographic Key Preparation**
Introduction
Kazuhiro Yokoyama is a prominent inventor based in Kawasaki, Japan, known for his contributions to cryptography and data security. With two patents to his name, he has made significant strides in the development of advanced technologies that enhance the security of cryptographic systems.
Latest Patents
Yokoyama's latest patents reflect his innovative approach to key preparation. The first patent describes an **Extended Key Preparing Apparatus** and **Method**, which utilizes an intermediate data preparing equipment to produce an extended key required for common key cryptosystems. This system allows for the selection and rearrangement of data through bit operations, ensuring high-speed and secure preparation of extended keys.
His second patent focuses on a **Prime Number Generation Apparatus** and **B-smoothness Judgement Apparatus**. This invention employs generated prime numbers and random numbers to calculate potential larger prime candidates, integrating a provable prime number judging method to verify their integrity. By generating strong prime numbers for use in RSA cryptosystems, Yokoyama's work helps fortify encryption practices against iterated-encryption attacks.
Career Highlights
Kazuhiro Yokoyama is currently employed at Fujitsu Corporation, a leading global information technology company. His role in the firm has allowed him to leverage his expertise in cryptography, contributing to the advancement of secure communication technologies.
Collaborations
Yokoyama has worked alongside esteemed colleagues, including Masahiko Takenaka and Naoya Torii. Their collaboration has facilitated a creative environment where innovative solutions to complex problems in the field of cryptography can flourish.
Conclusion
Kazuhiro Yokoyama's innovative patents and collaborative efforts highlight his dedication to enhancing cryptographic systems. His inventions not only contribute to current technologies but also pave the way for future advancements in data security, ensuring that information remains protected in an increasingly digital world.