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Symmetric key algorithms are a typically efficient and fast cryptosystem, so it has significant applications in many realms. For a wireless ad hoc network with constraint computational resources, the cryptosystem based on symmetric key algorithms is extremely suitable for such an agile and dynamic environment, along with other security strategies. In this paper, we introduce the concept of selective...
The communication world still looking forward for a highly sophisticated, dynamic, probabilistic, key-independent unique secure data transfer procedure for an ad hoc network. The job is not at all easy as it require to synchronise or rather globalise several network criteria of different vendors producing diversified hardware specification and complexity. However it has been tried to get above the...
It is fair to say that most, if not all, VANET applications rely on accurate location information. It is therefore imperative to provide mechanisms that ensure the integrity, availability, and confidentiality of location information. In this article we present a number of location security mechanisms specifically designed for VANETs. Proposed mechanisms for location integrity range from the use of...
An identity-based broadcast encryption protocol for ad hoc networks is proposed. Whenever a new mobile ad hoc network is formed, the proposed protocol only requires each group member to broadcast his/her identity to construct the group key, which avoids a large number of message exchanges between group members like group key management protocols proposed previously. Hence it is highly efficient in...
Threshold cryptography distributes the ability to provide a cryptographic service such as decryption or signing. It is an ideal choice to provide security services, such as authentication and access control, in MANETs or P2P systems. The paper proposes an ID- based threshold signature scheme, which has three attractive properties: (1) The user's co-signing key and signature share are all verifiable,...
We present two "asymmetric" probabilistic key predistribution schemes to cater for mutual authentication and broadcast authentication respectively. The schemes however employ only symmetric cryptographic primitives - the asymmetry is due to the use of different secrets for encryption/authentication and decryption/verification, which are however related through a one-way function. Both schemes...
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