Authors : Mohammed A. Fadhil Al-Husainy, Hamza A. Al-Sewadi and Shadi R. Masadeh
Abstract: Due to the lengthy and heavy computations required by the standard and powerful cryptosystems such as AES and 3DES and the need for efficient and secure cryptosystems for use over the cloud computing environment, a new era of lightweight cryptographic algorithms for security has emerged, especially for applications with limited resources such as remote sensors, smart cards and embedded healthcare devices. This study proposes a block cipher lightweight image cryptosystem that uses any digital file as a seed for generating the secret key. It works on a 32 bit block size and a key of any length and type of digital data. It generates a 16×16 substitution table of bytes, hence, a key space of 2048 is used, besides part of the key is embedded into the encrypted image. Experimental results have demonstrated good security level and a clear improvement in the encryption time when it is compared with other widely used systems.
Mohammed A. Fadhil Al-Husainy, Hamza A. Al-Sewadi and Shadi R. Masadeh, 2018. Lightweight Cryptosystem for Image Encryption Using Auto-Generated Key. Journal of Engineering and Applied Sciences, 13: 7418-7425.