Enhanced Substitution Cipher Technique for Image Encryption

4 Pages Posted: 8 Aug 2019 Last revised: 4 Sep 2019

See all articles by Naga Lakshmi T

Naga Lakshmi T

AITS

Jyothi Singaraju

Sri Padmavati Mahila Visvavidyalayam (SPMVV) - Department of Computer Science and Engineering

Date Written: August 6, 2019

Abstract

Now a days, Information Security plays an important role in this modern world. With the global usage of the Internet, virtually world is interconnected to each other, while it has created a lot of risks to the users who are involved in it. The users, businesses and organizations worldwide are suffering from a continuousproblems from attackers and hackers, who have a variety of tools and techniques in order to break the secret information and make changes to the data, which leads to security issues. One of the most important aspect is transmission of message such as text, image over the network securely. Many cryptographic algorithms have been proposed for secured transmission so that no other person can gain the access of transmitted data. The Encryption algorithm plays an important role to transmit data through the network. In this paper, an image data is considered, generally each and every pixel is encoded with a secret key and transmitted and decrypted at the receiver side. In some algorithms, the blocks of pixels are encoded with differentkeys. In this paper a new methodology introduced to perform the encryption with some variation in substitution cipher algorithm on split sub matrices with different keys instead of sequence block of pixels. By applying this methodology, it increases the security a lot for the information and can be easily transmitted in the network.

Keywords: Cryptography, Encryption, Decryption, Substitution Cipher

Suggested Citation

T, Naga Lakshmi and Singaraju, Jyothi, Enhanced Substitution Cipher Technique for Image Encryption (August 6, 2019). Proceedings of International Conference on Recent Trends in Computing, Communication & Networking Technologies (ICRTCCNT) 2019, Available at SSRN: https://ssrn.com/abstract=3432794 or http://dx.doi.org/10.2139/ssrn.3432794

Naga Lakshmi T (Contact Author)

AITS ( email )

Rajampet
India

Jyothi Singaraju

Sri Padmavati Mahila Visvavidyalayam (SPMVV) - Department of Computer Science and Engineering ( email )

Padmavathi Nagar, Near West Railway Station,
Andhra Pradesh
Tirupati, Andhra Pradesh 517502
India

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