Download Formal Aspects in Security and Trust: IFIP TC1 WG1.7 by Mario Bravetti, Nadia Busi, Roberto Gorrieri (auth.), Theo PDF

By Mario Bravetti, Nadia Busi, Roberto Gorrieri (auth.), Theo Dimitrakos, Fabio Martinelli (eds.)

International Federation for info Processing

The IFIP sequence publishes cutting-edge leads to the sciences and applied sciences of data and conversation. The scope of the sequence contains: foundations of computing device technological know-how; software program thought and perform; schooling; desktop functions in expertise; communique structures; structures modeling and optimization; info structures; desktops and society; desktops know-how; defense and safeguard in info processing platforms; synthetic intelligence; and human-computer interplay. complaints and post-proceedings of referred overseas meetings in laptop technology and interdisciplinary fields are featured. those effects usually precede magazine e-book and symbolize the most up-tp-date learn. The valuable objective of the IFIP sequence is to motivate schooling and the dissemination and trade of knowledge approximately all facets of computing.

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Extra info for Formal Aspects in Security and Trust: IFIP TC1 WG1.7 Workshop on Formal Aspects in Security and Trust (FAST), World Computer Congress, August 22–27, 2004, Toulouse, France

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6. 7. 8. 9. C-+S s s->c S-+V V -±B B B-+V V V -> S S-+C C->S S-+C s S -*B B pay(C,V,a),h(m) initiate(n) (h(m),t,n,v,a)s ] h(m),(pay(C,V,a),n)s (pay(C,V,a),n)s block(n) (T,h((pay(C,V,a),n)s))B commit(n) {{m,n)v}s T,n T,n receivein) m (n,T)s transfer(n), terminate(n). (1) C sends a query to S for buying item m from V for amount a. On this request, S generates a fresh nonce n. In this way, a protocol session possesses a unique nonce. Implicitly, S also notes the time t. (2a) 5 sends the nonce associated to the request and time to C.

The notation label(ßt) = £ is used to obtain the label of a type, and the notations £ C. r and r E £ are abbreviations for £ C iabei(r) and label(r) C £, respectively. The typing context includes a type assignment F, a set of constraints C and the program-counter label pc. F is a finite ordered list of x: r pairs in the order that they came into scope. For a given x, there is at most one pair x: r in F. 36 Formal Aspects ofSecurity and Trust [INT\ r ; C ; p c h n : i n t x [UNIT\ T ; C ; pc h () : u n i t ± =0 FV(T) [LOC]J L [LABEL] r ; C ; pc hfc: labelj.

19] J. T. Wittbold, D. M. Johnson: Information Flow in Nondeterministic Systems. Proc. of Symp. on Research in Security and Privacy, IEEE CS Press, 144-161, 1990. edu Andrew C. edu Abstract 1. This paper presents a language in which information flow is securely controlled by a type system, yet the security class of data can vary dynamically. Information flow policies provide the means to express strong security requirements for data confidentiality and integrity. Recent work on security-typed programming languages has shown that information flow can be analyzed statically, ensuring that programs will respect the restrictions placed on data.

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