Vehicular Ad-hoc Networks (VANETs) have high requirements for real-time data processing and security of message authentication. In order to solve the computing power asymmetry between vehicles road side units (RSUs) in VANETs under high-density traffic, accelerate speed authentication, problems computational overhead long authentication time caused by use bilinear pairing encryption technology ...

Approximate Message Authentication Code (AMAC) is a recently introduced cryptographic primitive with several applications in the areas of cryptography and coding theory. Briefly speaking, AMACs represent a way to provide data authentication that is tolerant to acceptable modifications of the original message. Although constructs had been proposed for this primitive, no security analysis or even...

Group signatures is a powerful primitive with many practical applications, allowing a group of parties to share a signature functionality, while protecting the anonymity of the signer. However, despite intensive research in the past years, there is still no fully satisfactory implementation of group signatures in the plain model. The schemes proposed so far are either too inefficient to be used...

Deniable authentication protocol is different from traditional authentication protocol in that the intended receiver can authenticate the source of a given message, but cannot prove the source to a third party. In recent years, many deniable authentication protocols have been put forth. To adapt to some special group communication requirements, in this paper, we will propose a new group oriente...

Traditionally, symmetric-key message authentication codes (MACs) are easily built from pseudorandom functions (PRFs). In this work we propose a wide variety of other approaches to building efficient MACs, without going through a PRF first. In particular, unlike deterministic PRF-based MACs, where each message has a unique valid tag, we give a number of probabilistic MAC constructions from vario...

Use of encryption algorithms in message authentication is replaced by secure hash functions which are often faster than encryption algorithms. Tsudik 14] has proposed three methods on message authentication which are only based on one-way hash functions and use some keys to make them secure. In this paper, we give a set of practical methods, each of which uses a fast collision free hash functio...

I describe protocols which assure the recipient of a quantum state that it has come from a sender with whom he has previously shared secret key. Their security is information-theoretic (“unconditional”) rather than based on computational assumptions. A particular class of such protocols is constructed, for which the different keys correspond to different, secret, quantum error detecting codes. ...

In GSM-WLAN heterogeneous networks, the authentication efficiency is one of the drawbacks for message transaction and processing in the RADIUS server. This paper proposed two fast authentication schemes, based on the EAP-SIM mechanism, to improve the authentication efficiency by balancing the message transaction loads and processing loads among the RADIUS server and individual APs. In this pape...