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Proxy re-encryption (PRE) allows a ciphertext computed under Alice's public key to be transformed to those which can be decrypted by Bob. Since Blaze et al. introduced the concept of proxy re-encryption in Eurocrypt'98, there are many results on proxy re-encryption. However, all the proxy re-encryption schemes proposed until now assume the proxy having no its own public/private keys. In this paper,...
Wireless Mesh Networks (WMNs) are an emerging technology for last-mle broadbandaccess. At first, the paper analyzed the unique securityrequirements of WMNs, network model and trust model. Then propose ONSA. Different from conventional cellular-like solution, ONSA eliminates the need for establishing service level agreement (SLA) among numerous WMN operators and the need for changing existing network...
If the user can compress the multimedia repeatedly, it will decrease the numbers of different resolution copies largely, and then reduce the transmission volume. Combining tamper-detection with DCT-based multi-compression will bring great benefit to the owner in copyright protection system. By embedding the information into the maximal quantized DCT coefficient, the user may make compression with...
Multi-receiver signcryption is a new cryptographic primitive that simultaneously fulfills both the functions of signature and multi-receiver encryption. Generalized Multi-Receiver signcryption can provide authenticity or confidentiality separately under specific inputs. Based on ECDSA, a generalized Multi-Receiver signcryption scheme is designed. It will be equivalent to ECDSA or multi-receiver encryption...
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