Reusing Static Keys in Key Agreement Protocols
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Abstract
Contrary to conventional cryptographic wisdom, the NIST SP 800-56A standard explicitly allows the use of a static key pair in more than one of the key establishment protocols described in the standard. In this paper, we give examples of key establishment protocols that are individually secure, but which are insecure when static key pairs are reused in two of the protocols. We also propose an enhancement of the extended Canetti-Krawczyk security model and definition for the situation where static public keys are reused in two or more key agreement protocols. © 2009 Springer-Verlag.
Description
10th International Conference on Cryptology in India, INDOCRYPT 2009; New Delhi; India; 13 December 2009 through 16 December 2009
Keywords
Cryptography, Key agreement protocols, Public key cryptography, Security model, Security model, Cryptography, Public key cryptography, Key agreement protocols
Fields of Science
0202 electrical engineering, electronic engineering, information engineering, 0102 computer and information sciences, 02 engineering and technology, 01 natural sciences
Citation
Chatterjee, S., Menezes, A., and Ustaoğlu, B. (2009). Reusing static keys in key agreement protocols. Lecture Notes in Computer Science, 5922 LNCS, 39-56. doi:10.1007/978-3-642-10628-6_3
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OpenCitations Citation Count
7
Volume
5922 LNCS
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Start Page
39
End Page
56
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CrossRef : 7
Scopus : 6
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