Thomas H Likens

Title: Innovations of Thomas H. Likens

Introduction

Thomas H. Likens is a notable inventor based in Fort Worth, TX (US). He has made significant contributions to the field of cryptography, holding 2 patents that showcase his innovative approach to secure encryption devices. His work has implications for both the manufacturing and verification processes of cryptographic implementations.

Latest Patents

One of his latest patents is titled "Autotest of encryption algorithms in embedded secure encryption devices." This invention features an internal state machine controller within an integrated circuit that independently tests and verifies encryption and decryption algorithms with minimal processor intervention. The cryptographic implementation generates all input data and exercises feedback modes without relying on external test vectors, resulting in a more cost-effective manufacturing process. The processor loads predetermined test vectors and signals the state machine to initiate testing cycles, ensuring that the output matches the original data exactly.

Another significant patent is the "Cryptographic device with secure testing function." This method allows for secure testing of a cryptographic device without the need for a secure facility or cleared personnel. The process involves providing a test cycle total count number and sequentially encrypting and decrypting input data signals. The system compares the original input data signal to the decrypted signal, ensuring the integrity of the cryptographic device.

Career Highlights

Thomas H. Likens is currently employed at National Semiconductor Corporation, where he continues to innovate in the field of cryptography. His work has contributed to advancements in secure encryption technologies, enhancing the reliability and efficiency of cryptographic devices.

Collaborations

Throughout his career, Likens has collaborated with notable colleagues, including Thomas M. Norcross and Matthew H. Childs. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

Thomas H. Likens is a distinguished inventor whose contributions to cryptography have paved the way for advancements in secure encryption technologies. His patents reflect a commitment to enhancing the efficiency and reliability of cryptographic devices.