Ralf Hauser

Reducing the cost of security in link-state routing

Security in link-state routing protocols is a feature that is both desirable and costly. This paper examines the cost of security and presents two techniques for efficient and secure processing of link state updates. The first technique is geared towards a relatively stable internetwork environment while the second is designed with a more volatile environment in mind.

Lowering security overhead in link state routing

Security services in routing protocols are at the same time very important and very costly. This paper examines the cost of security in link state routing and develops techniques for efficient and secure processing of link state updates. Different approaches are recommended for stable and volatile network environments. Applications to mobile ad hoc networks are also considered.

Robust and Secure Password and Key Change Method

This paper discusses issues and idiosyncrasies associated with changing passwords and keys in distributed computer systems. Current approaches are often complicated and fail to provide the desired level of security and fault tolerance. A novel and very simple approach to changing passwords/keys is presented and analyzed. It provides a means for human users and service programs to change passwords and keys in a robust and secure fashion.

Control of Information Distribution and Access

Abstract It is a well-known hypothesis that information will become the centerpiece of the society of the twenty-first century—if it is not already. The expectations reach as far as that information will have an importance to the coming society similar to that of “money” to a market economy. This article discusses some ingredients in the worldwide information infrastructure in which information is expected to assume such an important role, and it lists some of the issues that have to be solved before such statements can become true. First, the distribution of information over open computer networks such as the Internet is under focus. Then, access by users to information and ways to reward the information creator financially for granting such access are discussed. Next, not only the decision on disclosure, but also the control on the duration and intensity of the information usage is discussed. Lastly, an idea for a technical framework is outlined that may increase the availability of the new media to the public without requiring governmental interference.

Robust and secure password and key change method

This paper discusses issues and idiosyncrasies associated with changing passwords and keys in distributed computer systems. Current approaches are often complicated and fail to provide the desired level of security and fault tolerance. A novel and very simple approach to changing passwords/keys is presented and analyzed. It provides a means for human users and service programs to change passwords and keys in a robust and secure fashion.