Defending Anonymous Communications Against Passive Logging Attacks

Defending Anonymous Communications Against Passive Logging Attack

Preventing Active Timing Attacks in Low-Latency Anonymous Communication

Low-latency anonymous communication protocols in general, and the popular onion-routing protocol in particular, are broken against simple timing attacks. While there have been few proposed solutions to this problem when the adversary is active, several padding schemes have been proposed to defend against a passive adversary that just observes timing patterns. Unfortunately active adversaries ca...

Threshold Anonymous Password - Authenticated Key Exchange Protocol ?

At Indocrypt 2005, Viet et al., [22] have proposed an anonymous password-authenticated key exchange (PAKE) protocol and its threshold construction both of which are designed for client’s password-based authentication and anonymity against a passive server, who does not deviate the protocol. In this paper, we first point out that their threshold construction is completely insecure against off-li...

A Survey of Peer-to-Peer Attacks and Counter Attacks

-Peer-to-Peer (P2P) network is a distributed network architecture that partitions tasks or workloads among peers (nodes). Similar to traditional Internet, P2P networks are open to many attacks. In this research work we survey the defensive measures against general attacks as well as P2P specific attacks. We take BitTorrent (a P2P communications protocol for file sharing) as an example to illust...

A Forensic Logging System Based on a Secure OS

This paper describes a forensic logging system that collects fine-grained trace evidence from target servers and networks. To provide a more reliable and efficient forensic logging system, we developed a dedicated network processor that collects network traffic and a hardened TCSEC-B1 level secure operating system. The system also is capable of defending servers from malicious attacks as well a...