Download PDF by Shiu-Kai Chin: Access Control, Security, and Trust : A Logical Approach

By Shiu-Kai Chin

ISBN-10: 1439894639

ISBN-13: 9781439894637

ISBN-10: 1584888636

ISBN-13: 9781584888635

Developed from the authors’ classes at Syracuse collage and the U.S. Air strength examine Laboratory, Access regulate, safety, and belief: A Logical Approach equips readers with an entry keep watch over common sense they could use to specify and be certain their safety designs. in the course of the textual content, the authors use a unmarried entry keep watch over common sense in accordance with an easy propositional modal logic.

The first a part of the booklet offers the syntax and semantics of entry keep watch over common sense, uncomplicated entry keep an eye on thoughts, and an advent to confidentiality and integrity regulations. the second one part covers entry keep watch over in networks, delegation, protocols, and using cryptography. within the 3rd part, the authors specialise in and digital machines. the ultimate half discusses confidentiality, integrity, and role-based entry control.

Taking a logical, rigorous method of entry keep an eye on, this e-book exhibits how good judgment is an invaluable software for studying protection designs and spelling out the stipulations upon which entry keep watch over judgements count. it really is designed for desktop engineers and desktop scientists who're liable for designing, enforcing, and verifying safe desktop and data systems.

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Example text

8 Let W1 = {w0 , w1 , w2 } be a set of worlds, and let I1 : PropVar → P (W1 ) be the interpretation function defined as follows2 : I1 (q) = {w0 , w2 }, I1 (r) = {w1 }, I1 (s) = {w1 , w2 }. In addition, let J1 : PName → P (W1 ×W1 ) be the function defined as follows3 : J1 (Alice) = {(w0 , w0 ), (w1 , w1 ), (w2 , w2 )}, J1 (Bob) = {(w0 , w0 ), (w0 , w1 ), (w1 , w2 ), (w2 , w1 )}. The three-tuple W1 , I1 , J1 is a Kripke structure. Intuitively, proposition q is true in worlds w0 and w2 , r is true in world w1 , and s is true in worlds w1 and w2 .

Thus, we typically omit the outermost parentheses, and we occasionally also omit additional parentheses according to standard conventions for operator precedence: ¬ binds most tightly, followed in order by ∧, ∨, ⊃, and ≡. Thus, for example, the formula p ⊃ q ∧ r is an abbreviation of (p ⊃ (q ∧ r)). Likewise, the formulas ((¬q ∧ r) ⊃ s) and (Jill says (r ⊃ (p ∨ q))) can be abbreviated respectively as follows: ¬q ∧ r ⊃ s, Jill says (r ⊃ p ∨ q). When the same binary operator appears multiple times in a formula—for example, p ⊃ q ⊃ r—the parentheses associate from left to right: (p ⊃ q) ⊃ r.

2 describes M’s behavior whenever it is currently in state B: if the input is x is 0, then the next state will be A; if x is 1, then the next state will be C. We can construct a Kripke structure W2 , I2 , J2 to model this machine by defining W2 to be the set of M’s states: W2 = {A, B,C, D}. 3. This table effectively specifies the interpretation function I2 on these propositions, namely: I2 (p) = {A,C}, I2 (q) = {A, B, D}, I2 (r) = {}, I2 (s) = {A, B,C, D}. Finally, imagine that there is an observer Obs of the machine’s execution.

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Access Control, Security, and Trust : A Logical Approach by Shiu-Kai Chin

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