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Efficient trust management between nodes in a huge network is an essential requirement in modern networks. This work shows few generic primitive protocols for creating a trusted link between nodes by deploying unclonable physical tokens as Secret Unknown Ciphers. The proposed algorithms are making use of the clone-resistant physical identity of each participating node. Several generic node authentication...
The Address Resolution Protocol (ARP) provides the link between layer 3 IPv4 addresses and layer 2 (MAC) addresses. ARP has no facilities for authenticating the communicating parties and is therefore vulnerable to spoofing attacks. Observing that in modern networks the use of the DHCP server to allocate both static and dynamic addresses is more or less taken for granted, we propose to use the DHCP...
Fileteller is a credential-based network file storage system with provisions for paying for file storage and getting paid when others access files. Users get access to arbitrary amounts of storage anywhere in the network, and use a micropayments system to pay for both the initial creation of the file and any subsequent accesses. Wide-scale information sharing requires that a number of issues be addressed;...
Despite the fact that numerous studies have indicated that vehicular networks are vulnerable to external and internal attacks, very little effort has been expended in safeguarding communications both between elements within the vehicle and between the vehicle and the outside world. In this paper we present a mechanism that allows communications policy (essentially who can talk with whom and the security...
Using graph-like structures to store and organise ideas, concepts and programs in a Software Development Environment is not new. This approach, however, has two drawbacks: the rigidity and large size of the resulting graph. Users have difficulty managing change in the network and as the information piles up, they have trouble finding their way in the graph. In this paper we describe an organisation...
The predominance of short-lived connections in today’s Internet has created the perception that it is perfectly acceptable to change a host’s IP address with little regard about established connections. Indeed, the increased mobility offered by laptops with wireless network interfaces, and the aggressive use of short DHCP leases are leading the way towards an environment where IP addresses are transient...
This paper describes TAPI, an offline scheme intended for general Internet-based micropayments. TAPI, which extends and combines concepts from the KeyNote Microchecks and OTPCoins architectures, encodes risk management rules in bank-issued users’ credentials which are in turn used to acquire small-valued payment tokens. The scheme has very low transaction overhead and can be tuned to use different...
The rapid development of the embedded systems and the wide use of them in many sensitive fields require safeguarding their communications. Internet Protocol Security (IPsec) is widely used to solve network security problems by providing confidentiality and integrity for the communications in the network, but it introduces communication overhead. This overhead becomes a critical factor with embedded...
How some extremely smart hackers pulled off the most audacious cell-network break-in ever. On 9 march 2005, a 38-year-old Greek electrical engineer named Costas Tsalikidis was found hanged in his Athens loft apartment, an apparent suicide. It would prove to be merely the first public news of a scandal that would roil Greece for months. The next day, the prime minister of Greece was told that his cellphone...
Recently, a number of new research initiatives, most notably UCLPv2 and GENI, have promoted the dynamic partition of physical network resources (infrastructure) as the means to operate the network, and to implement new protocols and services. This has led to a number of open issues such as resource discovery, implementation of resource partitioning, and the aggregation of resources to create arbitrary...
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