Based on 1-D fractional Fourier transform, we proposed an image encryption algorithm in
order to hide two images simultaneously. When the fractional order is closed to 1, most …

Security is one of the core areas of study in recent days. Encryption of the image is widely
known as an effective method for its secure transmission. The objective of any image …

In this paper, we propose a new reciprocal-orthogonal parametric discrete Fourier transform
(DFT) by appropriately replacing some specific twiddle factors in the kernel of the classical …

In this paper, we propose a new method to find the closed-form solution of Number Theoretic
Transform (NTT) eigenvectors. We construct the complete generalized Legendre sequence …

In this paper, a new class of reciprocal-orthogonal parametric (ROP) transforms having 3 N/2
independent parameters for a sequence length N that is a power of two is proposed. The …

We propose a real-to-real image encryption method. It is a double random amplitude
encryption method based on the parametric discrete Fourier transform coupled with chaotic …

Encryption is used to disguise data making it unintelligible to unauthorized observers.
Providing such security is especially important when data is being transmitted across open …

Discrete transforms have been widely used in various signal processing applications.
Specifically, transform-based data encryption techniques have become attractive for many …

In this paper, a novel class of element-wise inverse Jacket transforms (EIJT) with many
parameters are proposed for signal length N= 3× 2 r. The EIJT has 2 N-1 independent …

We propose an image encryption technique for color images by using conventional
logarithms operator, chaotic map and 4-weighted fractional Fourier transform (4-WFRFT) …