IJPAM: Volume 81, No. 5 (2012)

CONSTRUCTING IDENTITY-BASED
CRYPTOGRAPHIC SCHEME FOR QER CRYPTOSYSTEM

Chandrashekhar Meshram$^1$, Xiaopeng Huang$^2$, S.A. Meshram$^3$
$^1$Department of Applied Mathematics
Shri Shankaracharya Engineering College
Junwani, Bhilai (C.G.), INDIA
$^2$Department of Electrical and Computer Engineering
Stevens Institute of Technology Hoboken
New Jersey 07030, USA
$^3$Department of Mathematics
R.T.M. Nagpur University
Nagpur (M.S.), INDIA


Abstract. In 1984, Shamir proposed the concept of the identity-based cryptosystem. Instead of generating and publishing a public key for each user, the identity-based scheme permits each user to choose his name or network address as his public key. This is advantageous to public-key cryptosystems because the public-key verification is so easy and direct.This paper proposes a new identity-based cryptographic scheme for implementing public-key cryptosystem based on quadratic exponentiation randomized cryptosystem.The major advantage of the identity-based cryptosystem based on our scheme over other published identity-based cryptosystems is that the number of users can be extended to $b*L$ users without degrading the system's security even when users cospire, where $L$ is the number of the system's secrets and $b$ is the number of factors in $N-1$.

Received: July 9, 2012

AMS Subject Classification: 94A60, 81P94, 86P24

Key Words and Phrases: public key cryptosystem (PKC), identity based cryptosystem, discrete logarithm problem (DLP), generalized discrete logarithm problem (GDLP), integer factorization problem (IFP) and quadratic exponentiation randomized (QRC) cryptosystem

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Source: International Journal of Pure and Applied Mathematics
ISSN printed version: 1311-8080
ISSN on-line version: 1314-3395
Year: 2012
Volume: 81
Issue: 5