eap state machine
play

EAP State Machine Bryan D. Payne, Nick L. Petroni, Jr., & Chuk - PowerPoint PPT Presentation

Dec 18, 2022 •196 likes •270 views

EAP State Machine Bryan D. Payne, Nick L. Petroni, Jr., & Chuk Yang Seng University of Maryland, College Park 55 rd IETF November 2002 1 State Machine Revision http://www.ietf.org/internet-drafts/draft-payne-eap-sm-01.ps Update to a prior

  1. EAP State Machine Bryan D. Payne, Nick L. Petroni, Jr., & Chuk Yang Seng University of Maryland, College Park 55 rd IETF November 2002 1

  2. State Machine Revision http://www.ietf.org/internet-drafts/draft-payne-eap-sm-01.ps Update to a prior work (IETF 53) Changes based on design-team discussion • IEEE 802.1x notation • Nak handling • Identity handling Maryland Information Systems Security Laboratory http://www.cs.umd.edu/ ∼ npetroni/EAP/ietf55.pdf 2

  3. EAP Authenticator State Machine INITIALIZATION Policy.initialize() currentId = initialIdVal NEED ID UCT rxIdResp = FALSE idTimeout idTimeout = FALSE && needId txIdReq(currentId) GET METHOD idTryCount < maxIdTry inc(idTryCount) currentMethod = Policy.getNextMethod() needId = requiresId(currentMethod) rxIdResp idTryCount=0 UCT RECV ID idTryCount >= maxIdTry ELSE && inc(currentId) !rxIdResp POLICY TEST UCT policySat = Policy.isSatisfied() methodSuccess = FALSE methodFailure = FALSE currentMethod = NULL FAILURE && txFailure(currentId) !policySat inc(currentId) ELSE SUCCESS policySat RECV NAK txSuccess(currentId) Policy.recvNak(currentMeth) inc(currentId) rxNak METHOD INIT methodFailure rxNak = FALSE rxMethodResp = FALSE txMethodReq(currentId) rxMethodResp inc(currentId) METHOD BODY rxMethodResp = FALSE if(!isComplete(currentMethod)) { methodSuccess txMethodReq(currentId) inc(currentId) } rxMethodResp Maryland Information Systems Security Laboratory http://www.cs.umd.edu/ ∼ npetroni/EAP/ietf55.pdf 3

  4. EAP Peer State Machine INITIALIZATION Policy.initialize() UCT rxSuccess ID REQ && UNAUTHENTCATED SUCESS rxIdReq policySat txIdResp() rxIdReq = FALSE rxMethodReq = FALSE rxSuccess = FALSE rxFailure = FALSE UCT rxFailure policySat = Policy.isSatisfied() FAILURE methodSuccess = FALSE methodFailure = FALSE UCT rxMethodReq NAK METHOD INIT !doMethod txNak(currentMethod) doMethod = Policy.allowMethod(currentMethod) methodSuccess || methodFailure doMethod METHOD BODY rxMethodReq = FALSE txMethodResp() rxMethodReq Maryland Information Systems Security Laboratory http://www.cs.umd.edu/ ∼ npetroni/EAP/ietf55.pdf 4

  5. To Be Done Explicit representation of timers Error handling Alternate indications of Failure / Link changes Pass-through Authenticator Maryland Information Systems Security Laboratory http://www.cs.umd.edu/ ∼ npetroni/EAP/ietf55.pdf 5

  6. References http://www.ietf.org/internet-drafts/draft-payne-eap-sm-01.ps http://www.ietf.org/internet-drafts/draft-payne-eap-sm-01.txt http://www.ietf.org/internet-drafts/draft-ietf-eap-esteem-00.txt http://www.ietf.org/internet-drafts/draft-ietf-pppext-rfc2284bis-07.txt Maryland Information Systems Security Laboratory http://www.cs.umd.edu/ ∼ npetroni/EAP/ietf55.pdf 6

Recommend

Unit 14 State Machine Design 14.2 Outcomes I can create a state diagram to solve a

Unit 14 State Machine Design 14.2 Outcomes I can create a state diagram to solve a

14.1 Unit 14 State Machine Design 14.2 Outcomes I can create a state diagram to solve a sequential problem I can implement a working state machine given a state diagram 14.3 STATE MACHINES OVERVIEW 14.4 Review of State Machines

1.05k views • 86 slides
Finite State Machine (FSM) Consists of: CLK State register S S Next Current

Finite State Machine (FSM) Consists of: CLK State register S S Next Current

Finite State Machine (FSM) Consists of: CLK State register S S Next Current Stores current state State State Loads next state at clock edge Combinational logic Computes the next state Computes the outputs Next

477 views • 25 slides
Finite State Machine (FSM) Consists of: CLK State register S S Next Current

Finite State Machine (FSM) Consists of: CLK State register S S Next Current

Finite State Machine (FSM) Consists of: CLK State register S S Next Current Stores current state State State Loads next state at clock edge Combinational logic Computes the next state Computes the outputs Next

412 views • 26 slides
Scaling State Machine Replication Fernando Pedone University of Lugano (USI) Switzerland State

Scaling State Machine Replication Fernando Pedone University of Lugano (USI) Switzerland State

Scaling State Machine Replication Fernando Pedone University of Lugano (USI) Switzerland State machine replication Fundamental approach to fault tolerance Google Spanner Apache Zookeeper Windows Azure Storage MySQL Group

328 views • 22 slides
Interpretability in Machine Learning Why Interpret ? The current state of machine learning And

Interpretability in Machine Learning Why Interpret ? The current state of machine learning And

Interpretability in Machine Learning Why Interpret ? The current state of machine learning And its uses ... https://www.tesla.com/videos/autopilot-self- NYPost MIT Technology Review driving-hardware-neighborhood-long DeepMind DeepMind So

823 views • 55 slides
A Universal Computer A Universal Computer memory. A Turing machine has a finite state machine

A Universal Computer A Universal Computer memory. A Turing machine has a finite state machine

One-Slide Summary The Turing machine is a fundamental model of computation. It models input, output, processing and A Universal Computer A Universal Computer memory. A Turing machine has a finite state machine controller as well as an

136 views • 9 slides
CENG 342 Digital Systems Algorithmic State Machine with Datapath (ASMD) Larry Pyeatt

CENG 342 Digital Systems Algorithmic State Machine with Datapath (ASMD) Larry Pyeatt

CENG 342 Digital Systems Algorithmic State Machine with Datapath (ASMD) Larry Pyeatt SDSM&amp;T Finite State Machine Review Any Finite state machine with two inputs, two Mealy outputs, two Moore outputs, and up to four states can be

515 views • 28 slides
VIEW STATE MACHINE FOR NETWORK CALLS ON ANDROID @MANDYBESS THOUGHTBOT WHAT IS A VIEW STATE

VIEW STATE MACHINE FOR NETWORK CALLS ON ANDROID @MANDYBESS THOUGHTBOT WHAT IS A VIEW STATE

VIEW STATE MACHINE FOR NETWORK CALLS ON ANDROID @MANDYBESS THOUGHTBOT WHAT IS A VIEW STATE MACHINE? ! BUILD AN APP TOGETHER ! &quot; GAME OF CONES ! MODELING !&quot;! ICE CREAM - title - icon data class IceCream(val title: String, val

1.29k views • 71 slides
Fault Tolerance via the State Machine Replication Approach Favian Contreras Implementing

Fault Tolerance via the State Machine Replication Approach Favian Contreras Implementing

Fault Tolerance via the State Machine Replication Approach Favian Contreras Implementing Fault-Tolerant Services Using the State Machine Approach: A Tutorial Written by Fred Schneider Why a Tutorial? The State Machine Approach was

743 views • 52 slides
The State Machine Memory

The State Machine Memory

X86 assembly quick tutorial (real mode) Wei Dong The State Machine Memory CPU

260 views • 8 slides
CptS 570 Machine Learning School of EECS Washington State University CptS 570 - Machine

CptS 570 Machine Learning School of EECS Washington State University CptS 570 - Machine

CptS 570 Machine Learning School of EECS Washington State University CptS 570 - Machine Learning 1 Or, support vector machine (SVM) Discriminant-based method Learn class boundaries Support vector consists of examples closest

1.01k views • 46 slides
Outcomes I can create a state diagram to solve a sequential problem I can implement a

Outcomes I can create a state diagram to solve a sequential problem I can implement a

14.1 14.2 Outcomes I can create a state diagram to solve a sequential problem I can implement a working state machine given a state diagram Unit 14 State Machine Design 14.3 14.4 Review of State Machines We've implemented state

232 views • 22 slides
SMC The State Machine Compiler (40 ) Franois Perrad francois.perrad@gadz.org

SMC The State Machine Compiler (40 ) Franois Perrad francois.perrad@gadz.org

SMC The State Machine Compiler (40 ) Franois Perrad francois.perrad@gadz.org fperrad@OSDC.fr2009 The State Machine Compiler Introduction Basic concepts Advanced concepts More features A case study : a Telephone

280 views • 25 slides
Outcomes I can create a state diagram to solve a sequential problem I can implement a

Outcomes I can create a state diagram to solve a sequential problem I can implement a

15.1 15.2 Outcomes I can create a state diagram to solve a sequential problem I can implement a working state machine given a state diagram Unit 15 State Machine Design 15.3 15.4 State Machines (Finite) state machines of (FSMs)

333 views • 14 slides
Time, Clocks, and State Machine Replication Dan Ports, CSEP 552 Todays question How

Time, Clocks, and State Machine Replication Dan Ports, CSEP 552 Todays question How

Time, Clocks, and State Machine Replication Dan Ports, CSEP 552 Todays question How do we order events in a distributed system? physical clocks logical clocks snapshots (break) application: state machine replication

1.06k views • 80 slides
Two-Player Game State Machine 2-Player Game State Diagram 2PG2 2-Player

Two-Player Game State Machine 2-Player Game State Diagram 2PG2 2-Player

Two-Player Game State Machine 2-Player Game State Diagram 2PG2 2-Player Game Java Interface 2PG3 State-State Transition Table 2PG4 Paired Event-State Transition Table dc = don t care

392 views • 6 slides
CptS 570 Machine Learning School of EECS Washington State University CptS 570 - Machine

CptS 570 Machine Learning School of EECS Washington State University CptS 570 - Machine

CptS 570 Machine Learning School of EECS Washington State University CptS 570 - Machine Learning 1 Also called multilayer perceptrons Inspired from human brain Brain consists of interconnected neurons Brain still outperforms

988 views • 51 slides
1 https://trallard.github.io/Talks/RSE-shefeld The state of machine learning The state of

1 https://trallard.github.io/Talks/RSE-shefeld The state of machine learning The state of

1 https://trallard.github.io/Talks/RSE-shefeld The state of machine learning The state of machine learning RSE seminar, University of Shefeld Tania Allard, PhD 2 . 1 Tania Allard Tania Allard Developer advocate Research Software

1.01k views • 57 slides
Early Scheduling in Parallel State Machine Replication Eduardo Alchieri, Fernando Dotti, and

Early Scheduling in Parallel State Machine Replication Eduardo Alchieri, Fernando Dotti, and

1 Early Scheduling in Parallel State Machine Replication Eduardo Alchieri, Fernando Dotti, and Fernando Pedone Universidade de Brasilia, Pontifica Universidade Catlica do Rio Grande do Sul, and University of Lugano 2 State Machine

220 views • 20 slides
PROGRAMMING ADVANCED FEEDBACK WITH ARDUINO Part 09 - State machine structure The

PROGRAMMING ADVANCED FEEDBACK WITH ARDUINO Part 09 - State machine structure The

Part 09 - State machine structure PROGRAMMING ADVANCED FEEDBACK WITH ARDUINO Part 09 - State machine structure The Pomodoro Technique Part 09 - State machine structure The Pomodoro Technique 1. Decide on the task to be done. 2.

139 views • 9 slides
Machine to Machine Communications As a Service Machine-to-Machine (M2M) refers to technologies

Machine to Machine Communications As a Service Machine-to-Machine (M2M) refers to technologies

Machine to Machine Communications As a Service Machine-to-Machine (M2M) refers to technologies that allow both wireless and wired systems to communicate with other devices Its the fastest growing Telecom market today It uses the existing

412 views • 27 slides
CENG 342 Digital Systems Regular Sequential Circuit Larry Pyeatt SDSM&amp;T Mealy vs Moore

CENG 342 Digital Systems Regular Sequential Circuit Larry Pyeatt SDSM&amp;T Mealy vs Moore

CENG 342 Digital Systems Regular Sequential Circuit Larry Pyeatt SDSM&amp;T Mealy vs Moore Moore machine is a finite-state machine whose output values are determined solely by its current state. Mealy machine is a finite-state machine

260 views • 14 slides
CENG 342 Digital Systems Finite State Machine with Datapath (FSMD) Larry Pyeatt SDSM&amp;T

CENG 342 Digital Systems Finite State Machine with Datapath (FSMD) Larry Pyeatt SDSM&amp;T

CENG 342 Digital Systems Finite State Machine with Datapath (FSMD) Larry Pyeatt SDSM&amp;T Finite State Machine with Datapath (FSMD) A Finite State Machine with Datapath (FSMD) is a mathematical abstraction that is sometimes used to design

711 views • 32 slides
Example Finite State Machine Representation Part of a purchase protocol that deals with making

Example Finite State Machine Representation Part of a purchase protocol that deals with making

State Diagrams Example Finite State Machine Representation Part of a purchase protocol that deals with making offers Roles: buyer (b) and seller (s) S 0 S 3 Transitions labeled with messages Specify legal message flows offer(s, b)

147 views • 10 slides

More recommend