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Generalization of Threshold Signature and Authenticated Encryption for Group Communications

Ching-Te WANG, Chin-Chen CHANG, Chu-Hsing LIN

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Summary :

In this paper, we propose an idea of the generalization of threshold signature and authenticated encryption for group communications. The concept of the (t, n) threshold signature with (k, l) shared verification is implemented in group-oriented cryptosystems. In the system, any t members can represent a group to sign a message and any k verifiers can represent another group to authenticate the signature. By integrating the cryptographic techniques of data encryption, digital signature and message recovery, a group-oriented authenticated encryption scheme with (k, l) shared verification is also proposed. The message expansion and communication cost can also be reduced in our schemes.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E83-A No.6 pp.1228-1237
Publication Date
2000/06/25
Publicized
Online ISSN
DOI
Type of Manuscript
PAPER
Category
Information Security

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