Authentication with recently proposed quantum password protocol is secure against impersonation. Here we show that original version of the protocol is not secure against active malicious prover and verifier, however a slight modification provides a possibility for a legitimate party to detect the attacks. The password is reusable in the absence of the attacks. Otherwise the security of the auth...

With the advent of powerful and efficient wireless sensor nodes, the usage of wireless sensor networks (WSNs) has been greatly increased. However, various kinds of security breaches have also been introduced, which exposes the vulnerability of these nodes to defend the valuable data from some specific types of attacks. In this paper, we address node replication, replacement, and man-in-the-midd...

In the article we show an attack on the cryptographic protocol of electronic auction with extended requirements [1]. The found attack consists of authentication breach and secret retrieval. It is a kind of “man in the middle attack”. The intruder impersonates an agent and learns some secret information. We have discovered this flaw using OFMC an automatic tool of cryptographic protocol verifica...

As an interconnection technology, Bluetooth has to address all traditional security problems, well known from the distributed networks. Moreover, as Bluetooth networks are formed by the radio links, there are also additional security aspects whose impact is yet not well understood. In this paper, we propose a novel Man-In-The-Middle (MITM) attack against Bluetooth enabled mobile phone that supp...

Secure initial pairing of electronic gadgets is a challenging problem because of the usual lack of a common security infrastructure and the threat of so-called Man-in-the-Middle (MiTM) attacks. A number of techniques have been proposed to address the problem, butmany are not applicable to devices lacking required interfaces, such as displays or speakers. In this paper, we introduce a new secure...

Gemmell and Naor proposed a new protocol for unconditionally secure authentication of long messages. However Gehrmann showed that the proof of the security of the protocol was incorrect. Here we generalize the multiround protocol model. We prove the security of a 3-round protocol and give for this case a new easy implementable construction which has a key size close to the fundamental lower bou...

Study of all reported instances of motion of Martian yellow clouds yields a n analysis of thcir probable nature and properties. The yellow clouds seem to be initiated by wind-driven sand and teiid to form in low latitudes. The limb and terminator projections seem to be quite diffcreiit in nature, probably in par t aqucous condensations. Thcse occur primarily in middle latitudes.

In the present paper, we answer a question raised in the paper Constructions and Bounds for Unconditionally Secure Non-Interactive Commitment Schemes, by Blundo et al, 2002, showing that there is a close relation between unconditionally secure commitment schemes and unconditionally secure authentication schemes, and that an unconditionally secure commitment scheme can be built from such an auth...

Unconditionally secure authentication codes with arbitration (A 2 -codes) protect against deceptions from the transmitter and the receiver as well as that from the opponent. In this paper, we present combinatorial lower bounds on the cheating probabilities for A 2 -codes in terms of the number of source states, that of the whole messages and that of messages which the receiver accepts as authen...

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