ACPN: A Novel Authentication Framework with Conditional Privacy-Preservation and Non-Repudiation for VANETs

ACPN: A Novel Authentication Framework with Conditional Privacy-Preservation and Non-Repudiation for VANETs

ABSTRACT:

In Vehicular Ad hoc NETworks (VANETs), authentication is a crucial security service for both inter-vehicle and vehicle roadside communications. On the other hand, vehicles have to be protected from the misuse of their private data and the attacks on their privacy, as well as to be capable of being investigated for accidents or liabilities from non-repudiation. In this paper, we investigate the authentication issues with privacy preservation and non-repudiation in VANETs. We propose a novel framework with preservation and repudiation (ACPN) for VANETs. In ACPN, we introduce the public-key cryptography (PKC) to the pseudonym generation, which ensures legitimate third parties to achieve the non-repudiation of vehicles by obtaining vehicles’ real IDs. The self-generated PKCbased pseudonyms are also used as identifiers instead of vehicle IDs for the privacy-preserving authentication, while the update of the pseudonyms depends on vehicular demands. The existing ID-based signature (IBS) scheme and the ID-based online/offline signature (IBOOS) scheme are used, for the authentication between the road side units (RSUs) and vehicles, and the authentication among vehicles, respectively. Authentication, privacy preservation, non-repudiation and other objectives of ACPN have been analyzed for VANETs. Typical performance evaluation has been conducted using efficient IBS and IBOOS schemes. We show that the proposed ACPN is feasible and adequate to be used efficiently in the VANET environment.

EXISTING SYSTEM:

The symmetric key based authentication schemes are proposed for VANETs, which use symmetric key cryptographies for the message authentication. The drawback of using symmetric key management is that vehicles have to authenticate each other via the trust authorities, which is not suitable for large-scale vehicular communications in VANETs. The asymmetric key based authentication is widely adopted because of the separate keys used for encryption and decryption. The studies of the asymmetric key based authentication are classified into two classes: the public key infrastructure (PKI) based authentication and the identity (ID) based authentication. Although many PKI based authentication frameworks have been proposed, the system availability is still not pervasive or feasible, because such frameworks require additional communication to manage the vehicular certificates and the certificate revocation lists (CRLs) that may cause heavy communication and computation overheads.

DISADVANTAGES OF EXISTING SYSTEM:

• Symmetric key management is not suitable for large scale vehicular communication
• May cause heavy communication and computation overheads

PROPOSED SYSTEM:

The proposed ACPN provides the conditional vehicle anonymity for privacy preservation with traceability for the non-repudiation, in case that malicious vehicles abuse anonymous authentication techniques to achieve malicious attacks. In ACPN, we introduce the public-key cryptography (PKC) to the pseudonym generation, which ensures a legitimate third party to achieve non-repudiation of vehicles by obtaining their real IDs. We propose a PKC-based adaptive pseudonym scheme by using self-generated pseudonyms instead of real-world IDs in authentication for privacy preservation and non-repudiation, in which the update of the pseudonyms depends on vehicular demands. In ACPN, we utilize the IBS scheme for the vehicle-to-roadside authentication and the roadside-to-vehicle (R2V) authentication, which is efficient in communication. In order to further reduce the computation overhead by IBS in authentication, the IBOOS scheme is used for the vehicle-to-vehicle authentication.

ADVANTAGES OF PROPOSED SYSTEM:

• Reduce the communication overhead
• ACPN is reusability
• Provide more security

SYSTEM ARCHITECTURE:

SYSTEM REQUIREMENTS:

HARDWARE REQUIREMENTS:

• System :         Pentium IV 2.4 GHz.
• Hard Disk :         40 GB.
• Floppy Drive : 44 Mb.
• Monitor : 15 VGA Colour.
• Mouse :
• Ram : 512 Mb.

SOFTWARE REQUIREMENTS:

• Operating system : Windows XP/7/LINUX.
• Implementation : NS2
• NS2 Version : 2.28
• Front End : OTCL (Object Oriented Tool Command Language)
• Tool : Cygwin (To simulate in Windows OS)

REFERENCE:

Jie Li, Senior Member, IEEE, Huang Lu, Member, IEEE, and Mohsen Guizani, Fellow, IEEE, “ACPN: A Novel Authentication Framework with Conditional Privacy-Preservation and Non-Repudiation for VANETs”, IEEE TRANSACTIONS ON PARALLEL AND DISTRIBUTED SYSTEMS, VOL. 26, NO. 4, APRIL 2015.