Information Security010 marksNumerical: Access control matrix ACLSubjects, objects and access rights
Consider a system having users U1, U2, U3 & files F1, F2 and F3 as F4. User U1 can read and write files F2 and F3. User U2 can read all the files but can perform write operation on F2. The user U3 can perform read operation on F3 and append on file F4. Now prepare access control matrix, access contr
Consider a system having users U1, U2, U3 & files F1, F2 and F3 as F4. User U1 can read and write files F2 and F3. User U2 can read all the files but can perform write operation on F2. The user U3 can perform read operation on F3 and append on file F4. Now prepare access control matrix, access control list and capability list.[10]
Subjects (Users): U1, U2, U3 Objects (Files): F1, F2, F3, F4 Stated permissions: - U1: read and write on F2 and F3 - U2: read all files (F1, F2, F3, F4); write on F2 - U3: read on F3; append on F4 All permissions fully specified. Nothing missing. --- Rows = subjects (users), Columns = objects (fi...