Modelling Dynamic Opacity using Petri Nets with ...

1 downloads 0 Views 220KB Size Report
Aug 26, 2004 - -We introduce a further Petri Net based notion of opacity, namely total opac- ity. ... ofUleads fromM toM'we writeM [U)M'. An execution from a ...
School of Computing Science, University of Newcastle upon Tyne

Modelling Dynamic Opacity using Petri Nets with Silent Actions Jeremy W. Bryans, Maciej Kounty, Peter Y. A. Ryan

Technical Report Series CS-TR-855

August 2004 Please note that a modified version of this publication (without proofs) appeared in Workshop on Formal Aspects in Security and Trust 26-27 August 2004, published by Kluwer Academic Press.

c Copyright 2004 University of Newcastle upon Tyne Published by the University of Newcastle upon Tyne, School of Computing Science, Claremont Tower, Claremont Road, Newcastle upon Tyne, NE1 7RU, UK.

      !#" $%  &'(%)* ,+-(%$ . 0/1$2  340 5 $ 6879:7;5A@49BA]^DÉ(ÊA7VBÊA7SM9:®Û…VN°GCMEšSFV:ʚ79;±CFVQVB7 9 HSMË4LSMUš9 GQ78H!ʚScÍ YJ7eCMYJÓ°SJL ÞWG¬Í4SMUšÓÑY¨×¢7YJ7VB7eL„VB7eY SM9^SM×¢GQ7 9BÏ87 YN°EVBʚ79:7 CMӁÓONO˝7GB Ñ®7V “ Òu"¢4e u r^r‰ru"”c• eo”cu"”×´7^CFE‡7ÒJ7 LUJVBN°SME‡Ë9:SM; C;±CF9:ÞWNOEšÎ#u'¢A¡&¢M> =¨7T÷A9 GQV(N°EDVB9:SJYJUAL 7TVnÍ4 S3CFUJÒJN°ÓONÑCF 9: Û{EXV:ʚ7LC8GQ7¬SFË2;3CM9BÞWN°EšÎ‡Ìš9BSMPn7 LVBN°SME®HWÍ47TC8GBGBUš;37VBÊACFVö ë -÷ø N°G^C3GB7V^SFË2̚ӰC8L7eGvS8E Í^ʚN°L ʨÍv7‡LCME¨CFÓ°Í(Cx0ۅˬ V:ʚ7 3Wë2143 â UAGQ7 9±N°GNOE GQV:CFVB7vÜ â S89HÜYëVBʚ7 E Í^ʚ7EõçOå‚0 CcVQV:7;3ÌJV GVBS,0 åcûs«Êš7XÍ^NOÓ°Ó ×´7UšEACMךӰ7±VBSKÌ´79B˝SM9:; V:ʚ7±V:9:CMEAGQNOVBN°SMEˆ>ˆÉ(ʚNÑGÍ^N°ÓOÓ4CFÓ°ÓOScÍ ÊšNO;âVBSYJ7eYJUAL7V:ÊACcV7 NpV:ʚ79IÜ â SM9Ü ë NÑG(SJLLUA̚NO7eYHš×šUšVEšSFVÍ^ʚNÑL ÊSMEš78> É(ʚ7M 9:7Ó°7ÏcCFEDV^ÌACF9BV^SFË (VBʚ7#ÿ‚í ;3CM̚̚N°EšÎ±Í4SMUšÓÑYV:ʚ7E ×´7YJ7÷¢Eš7 Y CMG

ÿ‚í l Fu %au!õ Û0 ÿ‚íl êÝ4Ü  Ü21 Þ .Ýîÿ3‚þ Þ %îÿ3‚þ ÿ‚í l QÝªÜ â 6Ü21 Þ .Ý:/ Þ qÍ ÿ‚í l QݪÜYë‚6Ü21 Þ .Ý:/ Þ qÍ ÿ‚íl QÝ4Ü â 2Ü 1 Þ ^Ý 465 !:  Þ oÍ ÿ‚í l QÝ4Ü®ëª2Ü 1 Þ ^Ý 465 !:  Þ oÍ \ÓOVBʚS8UšÎMÊ«çOåª0 LCFEAEšSFVGB77VBʚ7GQV:CcV:7TSFË 3Jë213 YJN°9B7eL„VBÓ°

Suggest Documents