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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...
In order to solve the problems that sensor node-key leaking and adversaries make compromised nodes as their collusions to launch new attack, the paper proposed an efficient anti-collusion scheme based on elliptic curve cryptography for wireless sensor networks. In the proposed scheme, the group-key distribution strategy is employed to compute the private key of each sensor node, and the encryption...
Hierarchical identity-based encryption (HIBE) is a generalization of IBE that mirrors an organizational hierarchy, which consists of a root private key generator (PKG), domain PKGs and users. In a traditional HIBE system, users retrieve private keys from their domain PKGs, while domain PKGs request domain secret keys from the root PKG. What's more, the manager of each private key is a single one....
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