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Communication Dans Un Congrès Année : 2019

Cryptanalysis and Improvement of Identity-Based Multisignature Scheme

Résumé

Public-key encryption is an efficient mechanism providing a panoply of fundamental security services as confidentiality, authentication, integrity and non-repudiation. Effective key management and digital signatures is one of the key factors for the successful widespread deployment of public-key encryption. The digital signature is considered as one of the important mechanisms providing, in most network-based applications, one of the well-required security services, namely the authentication. In this paper, we study the security of the identity-based multisignature scheme. The scheme is based on RSA and Shamir's identity-based encryption and the message signature is shared by a coalition of known signers. We demonstrate the vulnerability of this scheme to the forgery attack, which could be carried by compromised signers, and then we propose countermeasures through a more robust scheme.
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Dates et versions

hal-03034661 , version 1 (01-12-2020)

Identifiants

Citer

Mohamed Mohammedi, Mawloud Omar, Yacine Challal, Abdelmadjid Bouabdallah. Cryptanalysis and Improvement of Identity-Based Multisignature Scheme. 3rd International Conference on Future Networks and Distributed Systems (ICFNDS 2019), 2019, Paris, France. pp.1-5, ⟨10.1145/3341325.3342010⟩. ⟨hal-03034661⟩
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