Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 2

random oracle Related Abstracts

2 Efficient Signcryption Scheme with Provable Security for Smart Card

Authors: Jayaprakash Kar, Daniyal M. Alghazzawi


The article proposes a novel construction of signcryption scheme with provable security which is most suited to implement on smart card. It is secure in random oracle model and the security relies on Decisional Bilinear Diffie-Hellmann Problem. The proposed scheme is secure against adaptive chosen ciphertext attack (indistiguishbility) and adaptive chosen message attack (unforgebility). Also, it is inspired by zero-knowledge proof. The two most important security goals for smart card are Confidentiality and authenticity. These functions are performed in one logical step in low computational cost.

Keywords: Provable Security, smart card, random oracle, unforgebility

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1 An Efficient and Provably Secure Three-Factor Authentication Scheme with Key Agreement

Authors: Mohan Ramasundaram, Amutha Prabakar Muniyandi


Remote user authentication is one of the important tasks for any kind of remote server applications. Several remote authentication schemes are proposed by the researcher for Telecare Medicine Information System (TMIS). Most of the existing techniques have limitations, vulnerable to various kind attacks, lack of functionalities, information leakage, no perfect forward security and ineffectiveness. Authentication is a process of user verification mechanism for allows him to access the resources of a server. Nowadays, most of the remote authentication protocols are using two-factor authentications. We have made a survey of several remote authentication schemes using three factors and this survey shows that the most of the schemes are inefficient and subject to several attacks. We observed from the experimental evaluation; the proposed scheme is very secure against various known attacks that include replay attack, man-in-the-middle attack. Furthermore, the analysis based on the communication cost and computational cost estimation of the proposed scheme with related schemes shows that our proposed scheme is efficient.

Keywords: Biometric, Elliptic Curve Cryptography, random oracle, Telecare Medicine Information System, three-factor

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