## 2 Related Work, Research Gap, and Problem Formulation  
Extensive research work was conducted to understand the strength and weaknesses of the various approaches. Some of the key papers are highlighted here. [PERSON] et al., in reference [PERSON] et al. (2016) focused on providing security in an untrusted cloud environment. In this mechanism, a master key is used to generate public and private keys for encryption/decryption. The key distribution center (KDC) is responsible for key generation and distribution. An assessment of the proposed method is carried out using communication cost, and encryption/decryption time. The proposed method has seen improvement in communication costs and encryption/decryption time. In order to overcome the disadvantages associated with AES subkey generation, [PERSON] et al., in their paper [PERSON] et al. (2018), modified the traditional key expansion algorithm by using the symmetric random function generator (SRFG). This adds randomness to the generated key. The proposed technique is tested against related and fault tolerance attacks. As compared to original AES, the proposed method has better confusion properties and Avalanche effect. The limitation of the work is the time taken by the key generation module, which is the trade-off between security and time. [PERSON] et al. [PERSON] et al. (2018) proposed a modified AES algorithm to protect the confidentiality of image data from unauthorized access. The focus in this study is on images characterized by reduced entropy. The modified encryption scheme consists of a keystream generator consisting of an A5/1 keystream generator and a W7 keystream generator. The A5/1 is made up of three linear feedback shift registers (LFSRs). W7 consists of the control unit and a function unit. The function unit is accountable for the keystream generation. The authors implemented both AES and modified AES algorithms, and compared the results to show the superiority of the modified AES algorithm. The authors [PERSON] et al., in reference [PERSON] et al. (2016), presented a new method to secure the secret sharing of an image between two entities. They employed [PERSON]'s scheme to create the shares of an image. The key is generated by the tree parity machine. The synchronized weight between the two parties becomes the key to the encryption. This key is used for the encryption of shares. The results of the experiments, such as correlation,  
Figure 1: Proposed Approach. RMSE, PSNR, time complexity analysis, and security analysis, show that the proposed algorithm can be used for secure image communications. [PERSON] et al. [11] proposed to combine AES and LDPC in a single step, to achieve security and reliability for satellite communication. A new round key generation technique is used to overcome the disadvantages of the traditional round key generation technique, for example, the linear relationship between the subkeys generated. The proposed round key generation algorithm is based on the modified Khazad function. In their work, [PERSON] et al. [12] combined hybrid chaotic encryption with LDPC. The image is transformed by applying FRFT and then encrypted using an Arnold cat map for confusion and a Henon map for diffusion. This encrypted image is encoded using LDPC coding. In this paper, the analysis of results is carried out only concerning BER, FER, and PSNR. Emphasis is not given to analyzing the security aspect of the proposed algorithm. The JSALE method proposed by [PERSON] et al. [13] incorporates all the features of AES by interlacing some operations used in AES with the layers of a QC-LDPC code. This method provides high security with low BER and less hardware complexity. A key strength analysis for different key generation and encryption techniques was carried out by [PERSON] et al. [14] in their work. Using different statistical tests, the authors identified the strengths of different key schedule algorithms. The paper [15] presented by [PERSON] et al. proposed a novel technique that integrates the Haar wavelet transform with the AES.