ITM University, Gurgaon, Haryana

About: ITM University, Gurgaon, Haryana is a education organization based out in Gurgaon, India. It is known for research contribution in the topics: Encryption & Cryptosystem. The organization has 749 authors who have published 1159 publications receiving 12997 citations.

Alteration of structural, optical and electrical properties of CdSe incorporated polyvinyl pyrrolidone nanocomposite for memory devices

Abstract: The important enhancement in the structural, dielectric and optical properties of pure polymer and CdSe incorporated polyvinyl pyrrolidone has been reported in this paper. The surface morphology of...

An asymmetric hybrid cryptosystem using equal modulus and random decomposition in hybrid transform domain

Abstract: In this paper, an asymmetric hybrid cryptosystem with coherent superposition, equal modulus and random decomposition in hybrid transform domain is proposed. To further strengthen the security of the cryptosystem, a hyperchaotic system is used as a pixel-swapping procedure. The hybrid transform is generated by utilizing fractional Fourier transform of various orders and Walsh transform. The hyperchaotic framework’s parameters and starting conditions alongside the fractional orders of the fractional Fourier transform extend the key-space and consequently give extra strength to the proposed cryptosystem. The designed cryptosystem has an extended key-space to avoid any brute-force attack and is non-linear in nature. The scheme is validated on gray-scale images. Computer based simulations have been performed to verify the validity and the performance of the proposed cryptosystem against different types of attacks. Results demonstrate that the proposed cryptosystem not only offers higher protection against noise attacks but is also invulnerable to special attack.

An asymmetric hybrid cryptosystem using hyperchaotic system and random decomposition in hybrid multi resolution wavelet domain

Abstract: In this paper, an asymmetric hybrid cryptosystem utilizing four-dimensional (4D) hyperchaotic framework by means of coherent superposition and random decomposition in hybrid multi-resolution wavelet domain is put forward. The 4D hyperchaotic framework is utilized for creating permutation keystream for a pixel swapping procedure. The hybrid multi-resolution wavelet is formed by combining Walsh transform and fractional Fourier transform of various orders. The 4D hyperchaotic framework’s parameters and preliminary conditions alongside the fractional orders extend the key-space and consequently give additional strength to the proposed cryptosystem. The proposed cryptosystem has an extended key-space to avoid any brute-force attack and is nonlinear in nature. The scheme is validated on greyscale images. Computer-based simulations have been executed to validate the robustness of the proposed scheme against different types of attacks. Results demonstrate that the proposed cryptosystem along with offering higher protection against noise and occlusion attacks is also unassailable to special attack.

Image encryption using quad phase masks in fractional Fourier domain and case study

Abstract: A Technique for the encryption of the image is proposed using the random phase masks and fractional Fourier transform. The method uses four random phase masks and two fractional orders that act as the encryption key. The encryption scheme transmits the data to the authorised user maintaining its integrity and confidentiality. Numerical simulations results have been carried out to validate the algorithm and its Mean Square Error (MSE) is calculated. Furthermore, an image is divided in to four sections and on each of the section of the image different algorithms are applied and then there encryption and the decryption time is studied and also their MSE are calculated and compared to find an algorithm which is most optimal.

If brands are people, then people are impulsive—assessing the connection between brand personality and impulsive buying behaviour

Abstract: Given the importance of branding on one hand, and pervasive nature of impulsive buying on the other, efforts were made to explore the possible impact of brand personalities on impulsive buying behaviour. For this, two studies were conducted. In the first study on 522 respondents, analysis using structural equation modelling revealed significant positive impact of “aggressive” and “activity” brand personality dimensions on impulsive buying behaviour. In the follow-up study on 1028 respondents across four different product categories, similar results were obtained with brand personality dimension of aggressiveness found to be significant impacting impulsive buying behaviour across all four product categories, while the brand personality dimension of “activity” was found to have significant positive impact in three out of the four product categories. Additionally, the results also revealed acceptable reliability and validity of brand personality measurement scale by Geuens et al. (Int J Res Mark 26(2):97–107, 2009). Findings from these studies provide a new perspective to brand management, and marketers equipped with this additional insight about the ability of “aggressive” and “active” brands to instigate impulsive purchase will have an opportunity to assess and utilise the short-term worth of brands as well.