In recent years, we have seen the development of key assignment schemes that use cryptography to enforce time-based authorization policies. One of the most important aspects of these schemes is the balance between the time required to derive keys and the amount of storage required for the public information from which keys are derived. The derivation time and storage are dependent on the number...

Metaverse is an immersive 3D virtual environment, a true artificial community in which avatars act as the user's alter ego and interact with each other. If we do not manage hype for metaverse, has recently been receiving surge interest, metaverse will fail to cross chasm. This article conducts comprehensive survey on computational arts, seven critical topics are relevant describing novel artwor...

Since the inception of Bitcoin in 2009, market cryptocurrencies has grown beyond initial expectations, as witnessed by thousands tokenised assets available on market, whose daily trades amount to dozens USD billions. The pseudonymity features these have attracted attention cybercriminals, who exploit them carry out potentially untraceable scams. wide range cryptocurrency-based scams observed ov...