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UID:18359
DTSTAMP:20190319T211512Z
SUMMARY:Computing Seminar - Names with interleaved scopes
LOCATION:SW101, Cornwallis South West, The University of Kent, Canterbury, Kent, CT2 7NF
DESCRIPTION:Abstract:\n"Names" are a simple data structure: they can only be compared for equality and created afresh. However, their very simplicity leads to them having strong and also subtle properties. Nominal set theory, pioneered by Andy Pitts and Jamie Gabbay, gave over the last 15 years or so a solid mathematical foundation for the treatment of names. Whereas the mathematical treatment of names is focussed on syntax, where names play the key role of variables, I have been interested in the use of names in semantic contexts, where they are commonly used as resource handlers (pointers, file handlers, sockets, etc.). One key distinction between the two usages of names is that of scope. Syntactic scope is always well-nested but semantic scope ("lifetime") does not need to be. This extra flexibility leads to some interesting mathematical questions. How is this related to security? Names occur all the time in security protocols, and if we want to make formal proofs about them, a good mathematical foundation is quite helpful. What I hope the audience will get from this talk is some increased awareness of the mathematical subtleties of something as simple as "names". What I hope to get from giving this talk is suggestions of situations where dynamic, non-iterleaved scopes may appear in a security context.\nDan Ghica - URL : http://www.cs.bham.ac.uk/~drg/\n\nhttp://www.cs.kent.ac.uk/dept_info/seminars/
DTSTART:20160308T160000Z
DTEND:20160308T170000Z
URL:http://www.cs.kent.ac.uk/dept_info/seminars/
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