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    A Novel Digital Signature Scheme for Advanced Asymmetric Encryption Techniques

    Lalem, F, Laouid, A ORCID logoORCID: https://orcid.org/0000-0002-8175-8467, Kara, M ORCID logoORCID: https://orcid.org/0000-0002-5736-8039, Al-Khalidi, M ORCID logoORCID: https://orcid.org/0000-0002-1655-8514 and Eleyan, A ORCID logoORCID: https://orcid.org/0000-0002-2025-3027 (2023) A Novel Digital Signature Scheme for Advanced Asymmetric Encryption Techniques. Applied Sciences, 13 (8). 5172. ISSN 2076-3417

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    Abstract

    Digital signature schemes are practical mechanisms for achieving message integrity, authenticity, and non-repudiation. Several asymmetric encryption techniques have been proposed in the literature, each with its proper limitations. RSA and El Gamal prove their robustness, but are unsuitable in several domains due to their computational complexity. Other asymmetric encryption schemes have been proposed to provide a cloud homomorphic encryption service, where the researchers focused only on how to ensure the homomorphic property. This paper proposes a new digital signature scheme dedicated to a family of encryption techniques. The proposal consists of two parts: the first focused on the secret key, and the second focused on the public key. Signature validity checking was performed by multiplying these two parts to reform again the sender’s public key, then comparing the result with the decrypted message. The validation of the decrypted message guarantees data integrity, where the signer public key is used to ensure authenticity. The proposed scheme takes a shorter execution time for the entire signature operation, including signing and verification, compared to other modern techniques. The analysis showed its robustness against private key recovery and forgery attacks. The implementation results of the proposed scheme showed promising performance in terms of complexity and robustness. The results confirmed that the proposed scheme is efficient and effective for signature generation and verification.

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