Hierarchal attribute based cryptographic model to handle security services in cloud environment: a new model

Abstract

The sharing of information in the cloud is a unique element of the environment, but there is a risk that the information may land with the wrong people. To counterattack this problem, security-associated methodologies were used to secure the information that was readily available to clients. Despite the lack of benefits, this provides productive/adaptability and dependability in access control strategies between clients in the sharing of information. The novel hierarchal attribute-based cryptographic security model (NHACSM) is being proposed to provide adaptability, versatility, and access control in sharing information in the appropriate climate. This model allows clients to share information in a hierarchal way, allowing for a productive assessment of access control strategy and improved security. The NHACSM method is used to reduce the total time values for different user instances compared to conventional approaches, for example, attribute-set-based encryption (ASBE), key-policy attribute-based encryption (KP-ABE), and ciphertext-policy attribute-based encryption (CP-ABE). With respect to 10 instances existing methods achieve 2.7, 2.5, and 2.3 respectively, and also compared to 20, 30, 40, and 50 instances, our proposed method is low. The encryption and decryption time evaluation values and performance evaluation of different approaches, ASBE, CP-ABE, were taken into account when increasing the user instance.

Improved Vigenere approach incorporating pseudorandom affine functions for encrypting color images

“…Perturbations in ciphering steps complicate the statistical relationships between original and ciphered images and make predicting them difficult. Diffusion, on the other hand, distributes data in its initial form efficiently and uniformly throughout the entire ciphered image [4], [5]. Encryption methods achieve diffusion and confusion through dense substitution and permutation of each pixel.…”