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This paper introduces definitions and constructions of public key infrastructure, certification authority and XTR public key system, describes the principle of digital signature of XTR-Nyberg-Rueppel signatures, and then designs a certificate authority system by using this kind of signature in order to save the time and space both in communication and computation without compromising security.
As grid??s dynamic, distributed and open nature, the issue of mutual trust among grid entities is challenging, not only because of the entities in different domains, but also because the fact that those domains may deploy different security mechanisms. A federal authentication and authorization scheme based upon trust management and delegation is proposed. Different security domains can join in the...
Authentication and encryption technology are the core components of the DRM (Digital Rights Management) system. In this paper, a security protocol basing on the identity-based signcryption scheme is proposed to implement these technologies simultaneously. According to the comparison with the PKI (public key infrastructure)-based DRM system, the advantages of this protocol are proved. However, in practice...
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