Emap expedite message authentication protocol for vehicular ad hoc networks

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Published on March 8, 2014

Author: madansupri

Source: slideshare.net

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Emap expedite message authentication protocol for vehicular ad hoc networks slides

EMAP: Expedite Message Authentication Protocol for Vehicular Ad Hoc Networks EMAP: Expedite Message Authentication protocol for Vehicular Ad Hoc Networks

Introduction: A taxonomy of wireless networks EMAP: Expedite Message Authentication protocol for Vehicular Ad Hoc Networks

Ad Hoc Networks • Non-infrastructure • Fixed and Mobile Nodes • Special Classes of Ad Hoc Networks  Vehicular Ad Hoc Networks  Wireless Mesh Networks  Wireless Sensor Networks  Bluetooth Scatternets… EMAP: Expedite Message Authentication protocol for Vehicular Ad Hoc Networks

What is a VANET (Vehicular Ad hoc NETwork)? Roadside base station Emergency event Inter-vehicle communications Vehicle-to-roadside communications EMAP: Expedite Message Authentication protocol for Vehicular Ad Hoc Networks

HMAC  HMAC stands for Hash-based Message Authentication Code  It used to verify data integrity and authenticity of a message  It uses current cryptographic hash functions with a secret key (SHA )

Terms  Some terms to help out with the next slide:  H = hash function  K = key  M = message  || = concatenation  XOR = XOR  o_key_pad = outer padding (one block long 0x36)  i_key_pad = inner padding (one block long 0x5c)  In short: HMAC(k,m) = H((k XOR o_key_pad) || H((k XOR i_key_pad) || m))

A visual look

Objective:  The main aim of this project is to propose EMAP(Expedite Message Authentication Protocol) for vehicular Ad hoc Networks which replaces the time-consuming CRL(Certificate Revocation List) checking process by an efficient revocation checking process. EMAP: Expedite Message Authentication protocol for Vehicular Ad Hoc Networks

Existing System:  In existing system, VANETs use the Public Key Infrastructure (PKI) and Certificate Revocation Lists (CRLs) in which the authentication of a received message is performed by checking if the Certificate of the sender is included in the current CRL. EMAP: Expedite Message Authentication protocol for Vehicular Ad Hoc Networks

Demerits:  A variety of attacks such as  Injecting false information,  Modifying and  Replaying the disseminated messages can be easily launched.  Delay in checking the revocation status of a certificate. EMAP: Expedite Message Authentication protocol for Vehicular Ad Hoc Networks

Proposed System:  Expedite Message Authentication Protocol (EMAP) for VANETs, replaces the time-consuming CRL checking process by an efficient revocation checking process which uses a keyed Hash Message Authentication Code (HMAC) and novel probabilistic key distribution. EMAP: Expedite Message Authentication protocol for Vehicular Ad Hoc Networks

Merits:  Decreased message loss ratio  EMAP is secure and efficient.  The number of messages that can be verified using EMAP within 300msec is greater than that using linear and binary CRL checking by 88.7 and 48.38 percent respectively EMAP: Expedite Message Authentication protocol for Vehicular Ad Hoc Networks

Modules:  Vehicle-to-Vehicle (V2V) and Vehicle-toInfrastructure  Expedite Message Authentication Protocol EMAP: Expedite Message Authentication protocol for Vehicular Ad Hoc Networks

1. Vehicle-to-Vehicle (V2V) and Vehicle-toInfrastructure  OBU’s can communicate either with other OBU’s through V2V communications or with RSU’s through V2I communications. EMAP: Expedite Message Authentication protocol for Vehicular Ad Hoc Networks

2. Expedite Message Authentication Protocol In this Module,  A Trusted Authority (TA): provides anonymous certificate and Distributing secret keys to all OBUs in the network.  Roadside units (RSUs): RSUs are fixed units distributed all over the network.  On-Board Units (OBUs): OBUs are embedded in vehicles. EMAP: Expedite Message Authentication protocol for Vehicular Ad Hoc Networks

System Requirements:  Hardware Requirements: System Hard Disk Floppy Drive Monitor Mouse Ram : Pentium IV 2.4 GHz. : 40 GB. : 1.44 Mb. : 15 VGA Color. : Logitech. : 512 Mb.  Software Requirements: Operating system Coding Language Front End : Windows 7 Ultimate (32-bit) : ASP.Net with C#. : Visual Studio 2010 Professional EMAP: Expedite Message Authentication protocol for Vehicular Ad Hoc Networks

EMAP: Expedite Message Authentication protocol for Vehicular Ad Hoc Networks

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