Currently we are witnessing a rapid integration of social networks and cloud computing, especially on storing social media contents on cloud storage due to its cheap management and easy accessing at any time and from any ...

Recently, Chen-Hsiang-Shih proposed a new dynamic ID-based remote user authentication scheme. The authors claimed that their scheme was more secure than previous works. However, this paper demonstrates that theirscheme is ...

With the fast development in Cloud storage technologies and ever increasing use of Cloud data centres, data privacy and confidentiality has become a must. Indeed, Cloud data centres store each time more sensitive data such ...

[ANGLÈS] Survey of different encryption schemes emphasizing the improvements on the efficiency and the security of each scheme. Study of Groth-Sahai zero-knowledge proofs. Proposal of a fully secure threshold public key ...

Part 1 of the present multi-part deliverable, ETSI EN 319 162-1 [2] (ASiC part 1 henceforth) specifies the use of container structures for associating either detached CAdES [1] signatures or detached XAdES [i.7] ...

In proxy re-encryption (PRE), a proxy with re-encryption keys can transfer aciphertext computed under Alice's public key into a new one, which can be decrypted by Bob only with his secret key. Recently, Wang et al. introduced ...

Actualmente, la criptografía tiene un importante papel en la vida cotidiana. Es la encargada de mantener la privacidad y la confidencialidad en los diferentes tipos de comunicaciones: correos electrónicos, compras, banca ...

Nowadays Cloud computation has become a commonplace information service paradigm for all actors in ICT field, from individuals to big corporates. In particular, Cloud platforms and data centres are being used each time ...

One of the hardest tasks of a Public Key Infrastructure (PKI) is to manage revocation. Different revocation mechanisms have been proposed to invalidate the credentials of compromised or misbe- having users. All these ...