Abstract
In 2005, Sun-Cao pointed out that Peinado’s key authentication scheme does not achieve non-repudiation of the user’s public key, like its previous versions. Then, they proposed an improved public key authentication scheme, which is proved to realize the non-repudiation service. However, in this paper, we will show that Sun-Cao’s improved public key authentication scheme for non-repudiation is still vulnerable to public key substitution attack, i.e., an intruder can substitute a fake public key for the genuine one. Furthermore, we propose an improved public key authentication scheme for non-repudiation. In our scheme, we resolve the problems appeared in Sun-Cao’s scheme as the public key substitution attack. As a result, our scheme is highly secure than Sun-Cao’s scheme.
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Yoon, EJ., Yoo, KY. (2007). Improving the Sun-Cao’s Public Key Authentication Scheme for Non-repudiation. In: Huang, DS., Heutte, L., Loog, M. (eds) Advanced Intelligent Computing Theories and Applications. With Aspects of Contemporary Intelligent Computing Techniques. ICIC 2007. Communications in Computer and Information Science, vol 2. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-74282-1_123
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DOI: https://doi.org/10.1007/978-3-540-74282-1_123
Publisher Name: Springer, Berlin, Heidelberg
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