Networking and Communication Engineering

R. Bala ¹, V. Janani ¹, G. Kousalya ¹

Affiliations
1 Department of Software Engineering & IT [PG], A.V.C. College of Engineering, Mayiladuthurai, Mannampandal – 609 305, Nagapattinam District, Tamil Nadu, IN
2 Department of Software Engineering & IT [PG], A.V.C. College of Engineering, Mayiladuthurai, Mannampandal – 609 305, Nagapattinam District, Tamil NadU, IN

Abstract

Traditionally, mobile communication system is must be designed to cope with data transmission errors that may be introduced due to attenuation, noise and fading. Network protocols have been designed around the conventional metrics of throughput and latency. However, a proper design of these protocols offers many opportunities for optimising the design metric that is more relevant to battery operated devices: the amount of energy consumed per useful user level bit transmitted across the wireless link. Since high error rates are inevitable to the wireless environment, energy efficient error-control is an important issue for mobile computing systems. This includes energy spent in the physical radio transmission process, as well as energy spent in computation, such as signal processing and error control at the transmitter and the receiver.

Since high error rates are inevitable in the wireless environment, energy efficient error control is an important issue for mobile computing systems. When error-correction mechanisms are implemented on general-purpose processors the power consumption that is required to perform the error correction mechanism can be significant. These two methods, Parity code and Reed Solomon code, error correction mechanisms with different characteristics and capabilities will be used.

Keywords

Parity Code, Reed Solomon Code.

Full Text

     

R. Bala ¹

Affiliations
1 Department of Software Engineering & IT [PG], A.V.C. College of Engineering, Mayiladuthurai, Mannampandal – 609 305, IN

Abstract

Security is an important issue related to the storage and communication of data and information. In data and information security, cryptography and steganography are two of the most common security techniques. Transfer of critical information is also being carried out through the Internet. This widespread use of the Internet coupled with the tremendous growth in e-commerce and m-commerce has created a vital need for information security. Internet has also become an active field of crackers and intruders. It is, hence a challenge before the professional community to develop systems to ensure security of the data sent through the Internet. Here we describe a method for integrating together cryptography and steganography through image processing. In particular, we present a system able to perform steganography and cryptography at the same time using images as cover objects for steganography and as keys for cryptography. In this new approach, encrypt the original text message letter by letter applying a function, which involves certain mathematical operation using corresponding letters and also numbers from the original image, and then we use highly secure encryption using Double - EHDES algorithm to encrypt the message. For encryption we need to use secret key for plain text M and Triple - EHDES encryption function. A new steganography approach for data hiding is proposed. This approach uses the Least Significant Bits (LSB) insertion to hide data within encrypted image data. The binary representation of the hidden data is used to overwrite the LSB of each byte within the encrypted image randomly.

Keywords

Cryptography, Steganography.

Full Text