In this paper, a secure data communication environment for the three-tiered Wireless Sensor Networks (WSNs) that continues to operate correctly in a hostile medium is proposed. Considering the energy and hardware constraints of the sensor nodes, the low complex data confidential and authentication algorithms are proposed. Performance analysis of our protocol shows that it satisfies the energy and hardware limitations of the WSNs and maintains the secure fabrics of the network.
In this study, a fail-stop group signature scheme (FSGSS) that combines the features of group and fail-stop signatures to enhance the security level of the original group signature is proposed. Assuming that FSGSS encounters an attack by a hacker armed with a supercomputer, this scheme can prove that the digital signature is forged. Based on the aforementioned objectives, this study proposes three lemmas and proves that they are indeed feasible. First, how does a recipient of a digitally signed document verify the authenticity of the signature? Second, when a digitally signed document is under dispute, how can the group’s manager determine the identity of the original group member who signed the document, if necessary, for an investigation? Third, how can one prove that the signature is indeed forged following an external attack from a supercomputer? Following an attack, the signature could be proved to be forged without exposing the key. In addition, the ultimate goal of the group fail-stop signature scheme is to stop using the same key immediately after the discovery of a forgery attack; this would prevent the attack from being repeated.
Many researchers have investigated the Rivest, Shamir, and Adleman (RSA) and ElGamal algorithms for digital multisignatures. Computational and communicational costs increase rapidly after a series of signings; these methods are unsuitable for organizations with multiple geographic locations. Because these methods require many online tasks, problems such as theft, data falsification, and masquerading often occur. This study therefore proposes a digital multisignature scheme that decreases computational costs and achieves quick validation.
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