Hirohisa Hotta

Title: Hirohisa Hotta: Innovator in AES Encryption Technology

Introduction

Hirohisa Hotta is a notable inventor based in Kawasaki, Japan. He has made significant contributions to the field of encryption technology, particularly with his innovative AES encryption/decryption circuit. His work has implications for enhancing data security in various applications.

Latest Patents

Hirohisa Hotta holds a patent for an AES encryption/decryption circuit. This invention reduces the number of cycles required for AES encryption or decryption by hardware. It achieves this by minimizing the differences in the summation of the signal processing time for each sub-block transformation within each clock cycle period. The circuit includes a first AddRoundKey Transformation module, a second AddRoundKey Transformation module, a ShiftRows Transformation module, a SubBytes Transformation module, a MixColumns Transformation module, and a data holding unit. During the encryption cycle, the first and second AddRoundKey Transformation modules are executed using different Round Keys, enhancing efficiency.

Career Highlights

Hirohisa Hotta is associated with Canon Kabushiki Kaisha, a leading company in imaging and printing technologies. His role at Canon has allowed him to work on cutting-edge technologies that contribute to the company's reputation for innovation.

Collaborations

Hirohisa has collaborated with Akihiko Yushiya, a fellow innovator, to further advance their work in encryption technologies. Their partnership exemplifies the collaborative spirit in the field of technological innovation.

Conclusion

Hirohisa Hotta's contributions to AES encryption technology highlight his role as a significant inventor in the field. His innovative approach to reducing encryption cycles demonstrates the potential for advancements in data security.