A system and method for communicating information between a first party and a second party, comprising the steps of receiving, by an intermediary, an identifier of desired information and accounting information for a transaction involving the information from the first party, transmitting an identifier of the first party to the second party, and negotiating, by the intermediary, a comprehension function for obscuring at least a portion of the information communicated between the first party and the second party. The data transmission may be made secure with respect to the intermediary by providing an asymmetric key or direct key exchange for encryption of the communication between the first and second party. The data transmission may be made secure with respect to the second party by maintaining the information in encrypted format at the second party, with the decryption key held only by the intermediary, and transmitting a secure composite of the decryption key and a new encryption key to the second party for transcoding of the data record, and providing the new decryption key to the first party, so that the information transmitted to the first party can be comprehended by it.

System and method for secure three-party communications

In this paper, the fundamental insecurities hampering a scalable, wide-spread deployment of biometric authentication are examined, and a cryptosystem capable of using fingerprint data as its key is presented. For our application, we focus on situations where a private key stored on a smartcard is used for authentication in a networked environment, and we assume an attacker can launch o -line attacks against a stolen card.Juels and Sudan's fuzzy vault is used as a starting point for building and analyzing a secure authentication scheme using fingerprints and smartcards called a figerprint vault. Fingerprint minutiae coordinates mi are encoded as elements in a nite eld F and the secret key is encoded in a polynomial f(x) over F[x]. The polynomial is evaluated at the minutiae locations, and the pairs (mi, f(mi)) are stored along with random (ci, di) cha points such that di ≠ f(ci). Given a matching fingerprint, a valid user can seperate out enough true points from the cha points to reconstruct f(x), and hence the original secret key.The parameters of the vault are selected such that the attacker's vault unlocking complexity is maximized, subject to zero unlocking complexity with a matching fingerprint and a reasonable amount of error. For a feature location measurement variance of 9 pixels, the optimal vault is 269 times more difficult to unlock for an attacker compared to a user posessing a matching fingerprint, along with approximately a 30% chance of unlocking failure.

Secure smartcardbased fingerprint authentication

A survey of approaches combining safety and security for industrial control systems

A system and method authenticates users via any two or three of 1) Something the user knows; 2) Something the user has; and 3) A physical characteristic of the user.

System and method for authenticating users using two or more factors

With the fast development in ad hoc wireless communications and vehicular technology, it is foreseeable that, in the near future, traffic information will be collected and disseminated in real-time by mobile sensors instead of fixed sensors used in the current infrastructure-based traffic information systems. A distributed network of vehicles such as a vehicular ad hoc network (VANET) can easily turn into an infrastructure-less self-organizing traffic information system, where any vehicle can participate in collecting and reporting useful traffic information such as section travel time, flow rate, and density. Disseminating traffic information relies on broadcasting protocols. Recently, there have been a significant number of broadcasting protocols for VANETs reported in the literature. In this paper, we classify and provide an in-depth review of these protocols.

A Review of Information Dissemination Protocols for Vehicular Ad Hoc Networks

Providing precise positioning services in regional areas to support agriculture, mining, and construction sectors depends on the availability of ground continuously operating GNSS reference stations and communications linking these stations to central computers and users. With the support of CRC for Spatial Information, a more comprehensive review has been completed recently to examine various wired and wireless communication links available for precise positioning services, in particular in the Queensland regional areas. The study covers a wide range of communication technologies that are currently available, including fixed, mobile wireless, and Geo-stationary and or low earth orbiting satellites. These technologies are compared in terms of bandwidth, typical latency, reliability, coverage, and costs. Additionally, some tests were also conducted to determine the performances of different systems in the real environment. Finally, based on user application requirements, the paper discusses the suitability of different communication links.

Communication infrastructure study for precise positioning services in regional Queensland

Fourth Generation (4G) wireless networks allow ubiquitous pervasive data and voice connections for mobile users. Users will no longer have a single relationship with one access provider, but a relation- ship with a Biller or Agent which enables them access to the 4G world. The role of the Biller is to negotiate with providers that users have re- quested a service from. This situation gives rise to a number of security and trust issues between the 4G participants. The contribution of this paper is the proposal of a security architecture that provides informed consent for users and providers, per unit billing and per use billing with non-repudiation. We provide an informal analysis of the performance and security of this new architecture.

/pdf/a-secure-billing-architecture-for-4g-wireless-networks-t0peggltse.pdf

A Secure Billing Architecture for 4G Wireless Networks

A Secure Framework for User Privacy in Heterogenous Location Networks

We propose a new authorisation architecture based on the extension to the anonymous authorisation framework proposed by Au et al., whereby a new entity, trustee, and a new concept, key binding certificate (KBC), are introduced. In the architecture, the trustee issues a KBC to certify the association between a registered user's unique identity and the user's one-task authorisation key (OTAK) where OTAK is used as the user's unique identifier to preserve anonymity. More importantly, the trustee acts as an identity escrow agent to provide anonymity revocation in a well-regulated manner. Hence, any service provider is able to make authorisation decision based on the anonymous attribute certificates (AACs) issued by referee servers to anonymous users with a high level of assurance. The trustee also empowers the notion of chained referral in situations where users are required to obtain AACs from various referee servers. An improved protocol is also proposed, accompanied by an outline of its security analysis.

A Secure Anonymous Authorisation Architecture for E-Commerce

From 1st January 2000, Internet Service Providers in Australia have been required to filter web traffic content. The Australian Broadcasting Authority (ABA) publishes a list of banned web sites and ISPs must enforce this ban. Enforcing Internet content regulation is a security issue: ISPs need to be able to verify the authenticity of a distributed banned list, enforcement will most likely be performed by a security component, and enforcement must be integrated with other security functions. This paper examines these issues, and more specifically reviews the modifications required to the TIS http-gw proxy to support Internet content regulation.

A Three-Party HTTP Proxy to Support Internet Content Regulation

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