PPT-Belief Semantics of Authorization Logic

Andrew Hirsch and Michael Clarkson George Washington University Cornell University ACM Conference on Computer and Communications Security November 6 2013 Formal Reasoning about Authorization. Please do not alter or modify contents All rights reserved For more information call 8003384065 or visit wwwloveandlogiccom Love and Logic Institute Inc is located at 2207 Jackson Street Golden CO 80401 57513 1998 Jim Fay 57375e Delayed or Anticipat Please do not alter or modify contents All rights reserved QVSIBTFE 1BJOMTT1BSOUJOHSUI1STDIMBST BDLTPU PMEF XXXMPWF E MPHDDPN 57513 2001 Jim Fay End the Bedtime Blues Parents Dont Need to Force Kids to Go to Sleep edtime is a time of frustration (Belief:) It is going to rain. So, (Belief:) The streets will get wet. When I say that this process an end, and that we can reach more specific conclusions about which actions we have an obligati Logic. Grigore. . Rosu. and Andrei Stefanescu. University of Illinois, USA. Main Goal. Language-independent. program verification framework. D. erive program properties from . operational semantics. Introduction. Dana . Retov. á. . CSCTR2010 – Session 1. Agents. entities achieving some goals by sensing and acting in certain (real or virtual) environments. bacteria, animals, humans, some computer programs and robots . Fei Wu. Google Inc.. Petros. . Venetis. , . Alon. Halevy, . Jayant. . Madhavan. , Marius . Paşca. , Warren . Shen. , . Gengxin. Miao, Chung Wu. 1. Finding Needle in Haystack. 2. Finding Structured Data. Katie Welch, PhD. LING3311-001. How do we know what words mean?. When we want to know what a word means, we often turn a familiar source—the dictionary. . Why is the dictionary not a sufficient method for determining meaning? . Grigore. . Rosu. and Andrei Stefanescu. University of Illinois, USA. Matching Logic . Reachability. - Goal -. Language independent program verification framework. Derives program properties based on the operational semantics of a language. Grigore . Rosu. , Andrei . Stefanescu. , Brandon Moore. University of Illinois at . Urbana-Champaign, USA. Stefan . Ciobaca. University . Alexadru. . Ioa. n. . Cuza. , Romania. Long-Standing Dream. A branch of linguistics dealing with the study of meaning, including the ways meaning is structured in language and changes in meaning and form over time . (Random House Webster’s Dictionary). Semantics, roughly defined, is the study of meaning. Logic. Grigore. . Rosu. and Andrei Stefanescu. University of Illinois, USA. Main Goal. Language-independent. program verification framework. D. erive program properties from . operational semantics. Grigore. . Rosu. University of Illinois at . Urbana-Champaign (UIUC). Joint work with. Chucky Ellison . (UIUC). Wolfram Schulte . (Microsoft Research). How It Started. NASA project runtime . verification effort. MAS.S60. Rob Speer. Catherine . Havasi. * Lots of slides borrowed for lots of sources! See end. . Are people doing logic?. Language Log: “Russia sentences”. *More people have been to Russia than I have.. Chapter 3 Topics. Introduction. The General Problem of Describing Syntax. Formal Methods of Describing Syntax. Attribute Grammars. Describing . the Meanings of Programs: Dynamic Semantics. 1-. 2. Introduction.