id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
work_ewvk6lznwbfn3j56wv6u32zmjy	Yasar Khan	BlockU: Extended usage control in and for Blockchain	2020	12	.pdf	application/pdf	7336	645	55	Hyperledger Composer uses role-based access control (RBAC) model to secure role-based access control (RBAC) security model, it has been shown in the past that RBAC cannot perform attribute updates or the fined-grained usage In addition, we described a detailed permission model that enables the members of a business network and the owner of assets to specify usage-based The model has the capability to specify various types of policies depending on business needs, for example, allowing a specific asset to be accessed only for a specific time, with a specific computational power, or revoking an asset access from a user based on the occurrence of some defined condition. an extended usage control model on the smart contract implementation of Hyperledger Composer, which uses a blockchain to record every transaction on the distributed ledger. To define extended usage control permissions over assets, we introduce the concept of the participant state as well as updates to the operation,	./cache/work_ewvk6lznwbfn3j56wv6u32zmjy.pdf	./txt/work_ewvk6lznwbfn3j56wv6u32zmjy.txt