A Robust Class of Data Languages and an Application to Learning
We introduce session automata, an automata model to process data words, i.e., words over an infinite alphabet. Session automata support the notion of fresh data values, which are well suited for modeling protocols in which sessions using fresh values are of major interest, like in security protocols...
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Veröffentlicht in: | Logical methods in computer science 2014-12, Vol.10, Issue 4 (4:19) |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | We introduce session automata, an automata model to process data words, i.e.,
words over an infinite alphabet. Session automata support the notion of fresh
data values, which are well suited for modeling protocols in which sessions
using fresh values are of major interest, like in security protocols or ad-hoc
networks. Session automata have an expressiveness partly extending, partly
reducing that of classical register automata. We show that, unlike register
automata and their various extensions, session automata are robust: They (i)
are closed under intersection, union, and (resource-sensitive) complementation,
(ii) admit a symbolic regular representation, (iii) have a decidable inclusion
problem (unlike register automata), and (iv) enjoy logical characterizations.
Using these results, we establish a learning algorithm to infer session
automata through membership and equivalence queries. |
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ISSN: | 1860-5974 1860-5974 |
DOI: | 10.2168/LMCS-10(4:19)2014 |