Paper Info
Title
A lossless digital encryption system for multimedia using orthogonal transforms
Abstract
In this research work, we have developed a novel lossless digital encryption system for multimedia using the orthogonal transforms for the encryption of all types of image and audio formats. In addition, we have used the symmetric properties of the orthogonal transforms to calculate the inverse of the orthogonal matrices during the execution of the decryption process to speed up the operations and reduce the cost of performance. Several classical image encryption approaches such as Discrete Cosine Transform (DCT), Hadamard Transform (HT) as well as Malakooti Transform (MT), have been proposed and used. We also have proposed, a new Malakooti-Raeisi (MR) Key Gen Algorithm that can be used to encrypt and decrypt the voice signals by applying the XOR operation over the voice signals and Key Gen Sequences. The proposed Key Gen algorithm along with above orthogonal transforms have been used to increase the levels of security as well as the robustness of our algorithm during the image encryption/decryption process. We have encrypted/decrypted voice signals and a few images with only the M-R Key Gen values to show the ability of our algorithm for the encryption/decryption of both voice signals and images with a high accuracy and a reasonable security without using any other transforms. Our algorithm has a wide range of applications such as real time voice transmission, secure voice chat, and secure video encryption.
Year
DOI
Venue
2012
10.1109/DICTAP.2012.6215383
Digital Information and Communication Technology and it's Applications
Keywords
Field
DocType
audio coding,cryptography,image processing,speech coding,speech processing,DCT,Hadamard transform,Key Gen sequences,M-R Key Gen values,MR Key Gen Algorithm,Malakooti transform,Malakooti-Raeisi Key Gen algorithm,XOR operation,audio formats,discrete cosine transform,image decryption process,image encryption approach,image formats,lossless digital encryption system,orthogonal matrix inversion,orthogonal transforms,performance cost reduction,voice signal decryption,voice signal encryption,Cryptography,DCT,Decryption and Symmetric Encryption,HT,Image Encryption,Key Generator Algorithm,Malakooti Transform,Voice Security
Multiple encryption,Computer science,Discrete cosine transform,Encryption,Probabilistic encryption,40-bit encryption,Filesystem-level encryption,Link encryption,Hadamard transform,Multimedia
Conference
ISBN
Citations 
PageRank 
978-1-4673-0733-8
1
0.35
References 
Authors
2
2
Name
Order
Citations
PageRank
Mohammad V. Malakooti131.75
Mojtaba Raeisi Nejad Dobuneh210.35