Partial Cryptography in Digital Media Environment Based on ECC Algebra

Abstract

In recent years, Elliptic Curve Cryptography (ECC) has attracted the attention of
researchers and product developers due to its robust mathematical structure and
highest security compared to other existing algorithms like RSA. It is found to give
an increased security compared to RSA for the same key-size or same security as
RSA with less key size. In this paper a new approach is proposed for encrypting
digital image using the arithmetic of elliptic curve algebra. The proposed approach
produced a new mask for encrypt the digital image by use a new convolution
processes based on ECC algebra operations and work as symmetric cryptographic
system instead of asymmetric system. A new approach combined both compression
and encryption algorithms, the compression algorithm used here is discrete wavelet
transform to decompose the image information into four subbands (LL, LH, HL, and
HH), then LL subband will be encrypted. The new approach test by execute
encryption and decryption processes was more flexible and efficient.