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

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 keep watch over, safeguard, and belief: A Logical Approach equips readers with an entry keep an eye on good judgment they could use to specify and make certain their defense designs. during the textual content, the authors use a unmarried entry keep an eye on common sense according to an easy propositional modal logic.

The first a part of the publication offers the syntax and semantics of entry regulate good judgment, simple entry keep an eye on thoughts, and an advent to confidentiality and integrity guidelines. the second one part covers entry keep an eye on in networks, delegation, protocols, and using cryptography. within the 3rd part, the authors specialize 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 ebook indicates how common sense is an invaluable device for interpreting defense designs and spelling out the stipulations upon which entry regulate judgements rely. it really is designed for laptop engineers and desktop scientists who're chargeable for designing, imposing, and verifying safe machine and knowledge systems.

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Example text

Recall that a set S is a subset of T if every element of S is also an element of T . Thus, to prove that some set A is a subset of B, it suffices to demonstrate that any arbitrary element of A is necessarily also an element of B. The following simple example demonstrates this proof approach. 1 Property: The subset relation is transitive: that is, if A ⊆ B and B ⊆ C, then A ⊆ C. Proof: Consider sets A, B,C such that A ⊆ B and B ⊆ C, and consider an arbitrary element x ∈ A; we need to show that x ∈ C as well.

Note that a given piece of syntax (such as 101) may have multiple derivations possible, corresponding to choosing different nonterminals to expand at a given step. The order in which nonterminal symbols are replaced is not important; what is important is that at least one syntactic derivation must exist for a given piece of syntax in order for it to be considered well formed. 5 The following derivation demonstrates that (11 ∗ (1 + 10)) belongs to the syntactic category AExp: AExp ( AExp ∗ AExp) ( AExp ∗ ( AExp + AExp)) ( AExp ∗ ( BinNumber + AExp)) ( AExp ∗ ( Bit + AExp)) ( AExp ∗ ( 1 + AExp)) ( AExp ∗ ( 1 + BinNumber)) ( AExp ∗ ( 1 + Bit BinNumber)) ( AExp ∗ ( 1 + 1 Bit)) ( AExp ∗ ( 1 + 10)) ( BinNumber ∗ ( 1 + 10)) ( Bit BinNumber ∗ ( 1 + 10)) ( Bit Bit ∗ ( 1 + 10)) ( 1 Bit ∗ ( 1 + 10)) ( 11 ∗ ( 1 + 10)) ♦ Multiple production rules for the same syntactic category can be combined into a single rule by using the meta-symbol “ / ”, which separates possible alternatives.

Cy says (Di ⇒ Cy) m. Di says (Di ⇒ Cy) n. 3 Let M be the Kripke structure W, I, J , where W , I, and J are defined as follows: • W = {t, u, v, x, y, z} A Language for Access Control 35 • I : PropVar → 2W given by: I(p) = {x, y, z} I(q) = {x, y,t} I(r) = {y,t, u, z} • J : PName → 2W ×W given by: J(A) = {(w, w) | w ∈ W } ∪ {(x, y), (x, z), (z,t), (y, v), (v, y), (v, x)} J(B) = {(x, w) | w ∈ W } ∪ {(y,t), (z,t), (t, v)}. Calculate each of the following sets. a. EM [[(p ⊃ q) ⊃ r]] b. EM [[A says (p ⊃ r)]] c.

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


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