Use of elliptic curves in cryptography
Lecture notes in computer sciences; 218 on Advances in cryptology---CRYPTO 85
Modified Maurer-Yacobi`s scheme and its applications
ASIACRYPT '92 Proceedings of the Workshop on the Theory and Application of Cryptographic Techniques: Advances in Cryptology
Directed Signatures and Application to Threshold Cryptosystems
Proceedings of the International Workshop on Security Protocols
DIGITALIZED SIGNATURES AND PUBLIC-KEY FUNCTIONS AS INTRACTABLE AS FACTORIZATION
DIGITALIZED SIGNATURES AND PUBLIC-KEY FUNCTIONS AS INTRACTABLE AS FACTORIZATION
Advances in Elliptic Curve Cryptography (London Mathematical Society Lecture Note Series)
Advances in Elliptic Curve Cryptography (London Mathematical Society Lecture Note Series)
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Each member entering into a confidential group is unwilling to make the private information, i.e., which group he wants to join, who is the group manager and who issues the admission token, available to the general public and hence to any adversary. The group key initial distribution based on basic signature can not efficiently protect the privacy of the entering member since the basic signature can be verified by anyone using the corresponding public key. In this paper, we propose a directed signature scheme based on the elliptic curve ElGamal cryptosystems and apply it to the group key initial distribution for a confidential group communication. Through comparing to the elliptic curve ElGamal digital signature scheme in terms of computational cost using statistical hypothesis t-test two samples for means and Wilcoxon rank sum test, the results of the experiment show that our directed signature scheme is not significantly different from the digital signature scheme in statistics so that the group key initial distribution based on our directed signature scheme not only efficiently protects the privacy of the entering member but also saves the computation resources.