A decentralised authorisation mechanism is proposed that uses Bloom filters to implement authorization delegation. This lightweight mechanism is unlike conventional approaches that typically rely on public key certificates to implement distributed delegation. In taking an approach based on one-way hash functions, the mechanism may be preferable for use in computationally constrained environment...

In 1998, Tseng and Jan proposed a lightweight interactive user identification protocol based on ID-based cryptography. Recently, Hwang et al. modified their protocol to reduce the responding and waiting time for wireless network applications. In this letter, we show that their scheme is vulnerable to impersonation attacks. key words: cryptanalysis, user identification, ID-based cryptosystem, wi...

Lightweight trust mechanism with lightweight cryptography primitives and post-quantum cryptosystems are having important concerns in resource constraint wireless sensor based Mobile Ad Hoc Networks (MANETs). In postquantum cryptosystems, error correcting codes (ECC) help in code based cryptography for lightweight identification, authentication, distance bounding and tag with ownership transfer ...

The number of Resource-Limited Wireless Devices utilized in many areas of IT is growing rapidly. Some of the applications of these devices pose real security threats that can be addressed using authentication and cryptography. Many of the available authentication and encryption software solutions are predicated on the availability of ample processing power and memory. These demands cannot be me...

Lightweight cryptography is equipped as security component, to secure those pervasive devices that are security and privacy sensitive. It has been conclusively proven that unprotected cryptographic implementations are vulnerable to side-channel attacks. In practice, area resource smaller than 3,000GE (5,000GE sometimes) may be available for security components in pervasive devices. This paper p...

Recent years have seen considerable interest in lightweight cryptography. One particular consequence is a renewed study of meet-inthe-middle attacks, which aim to exploit the relatively simple key schedules often encountered in lightweight ciphers. In this paper we propose a new technique to extend the number of rounds covered by a meet-inthe-middle attack, called a match box. Furthermore, we d...

The design and implementation of security threat mitigation mechanisms in RFID systems, specially in low-cost RFID tags, are gaining great attention in both industry and academia. One main focus of research interests is the authentication and privacy techniques to prevent attacks targeting the insecure wireless channel of these systems. Cryptography is a key tool to address these threats. Never...

We introduce the notion of security-mediated certificateless (SMC) cryptography. This allows more lightweight versions of mediated cryptography while maintaining the ability for instantaneous revocation of keys. Moreover, our solutions avoid key escrow, which has been used in all previous mediated cryptography algorithms. We provide a model of security against a fully-adaptive chosen ciphertext...