id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
en-wikipedia-org-6355		Trusted system - Wikipedia			.html	text/html	2679	156	46	Key to the provision of the highest levels of assurance (B3 and A1) is the dedication of significant system engineering toward minimization of the complexity (not size, as often cited) of the trusted computing base (TCB), defined as that combination of hardware, software, and firmware that is responsible for enforcing the system's security policy. In 1974, David Bell and Leonard LaPadula of MITRE, working under the close technical guidance and economic sponsorship of Maj. Roger Schell, Ph.D., of the U.S. Army Electronic Systems Command (Ft. Hanscom, MA), devised what is known as the Bell-LaPadula model, in which a more or less trustworthy computer system is modeled in terms of objects (passive repositories or destinations for data, such as files, disks, printers) and subjects (active entities—perhaps users, or system processes or threads operating on behalf of those users—that cause information to flow among objects). Trusted systems in information theory[edit]	./cache/en-wikipedia-org-6355.html	./txt/en-wikipedia-org-6355.txt