Performance Analysis of Software Reference Model of AES Algorithm for Secure Image Encoding
Renjith V. Ravi, R. Mahalakshmi · 2013
with data security being one of the primary research topics in current day industry advancements over security, AES algorithm is one of the most popular techniques for data encryption. In this paper, we develop software reference model for AES algorithm and vali- date its performance in terms of encryption and decryption capability using various sets of data vectors. For secure image encoding re- quired for unmanned vehicles, Discrete Wavelet Transform (DWT) is adopted for image decomposition, quantization and selection of ap- propriate sub bands is required prior to encryption to reduce computation time. In this paper, a modified algorithm for secure image encod- ing is proposed, modeled and is analyzed for its performance. Various images are considered as test cases for encoding, with parallel op- eration of AES algorithm the total time in encoding the image is reduced to 2 seconds (estimated based on software reference model). PSNR for various images obtained demonstrate the performances of the proposed model for image encoding. Image size of 1024x1024 is considered for encryption and decryption. The results obtained demonstrate the performances of AES algorithm.