the full version of the extended abstract which appears in Latincrypt '10 (august 8-11, 2010, Puebla, Mexico) M. Abdalla and P. Barreto Eds., Springer-Verlag, LNCS 6212, pages...
On public communication networks such as the Internet, data confidentiality can be provided by symmetric-key ciphers. One of the most common operations used in symmetric-key ciphe...
We propose a Multi-Authority Attribute-Based Encryption (ABE) system. In our system, any party can become an authority and there is no requirement for any global coordination othe...
Firewalls typically filter network traffic at several different layers. At application layer, filtering is based on various security relevant information encapsulated into proto...
Bid-rigging is a dangerous attack in electronic auction. Abe and Suzuki firstly introduced the idea of receipt-free to prevent this attack. In this paper we point out that Abe and...