Hardware cryptography for ubiquitous computing

Progressive ubiquitous networks have impressed us with alternative features, diversity or security. When the diversity from small devices to large machines is in normal states, ubiquitous networks are functional and useful. But, it is hard to control if abnormal states once happen. Since the diversity brings about open-access to ubiquitous networks anytime anywhere, this really threatens user security. The key to protect huge amount of multimedia data in ubiquitous networks is to introduce safety aware high-performed single VLSI processor systems embedded with cipher process. TPM (trusted platform module) is a cutting-edge technique developed for the front-end security of a ubiquitous device. Since this works for a short, password-size text data, it does not always promise the complete safety of multimedia data stored in the ubiquitous device. In order to solve this fatal issue, we have developed a mobile processor dedicated to multimedia cryptography. This paper focuses on the multimedia cryptography by the dedicated processor.