Radhika Balkunde1, Mr. Ramakrishna Prasad A L2
1M.tech Research Scholar, Dept. of CSE, VTU-CPGS, Bangaluru Region – 562101
2Assistant Professor, Dept of CSE, VTU-CPGS, Bangaluru Region – 562101
Cipher text based encryption algorithm is widely used in cloud based environment due to their high reliability and efficiency. It is used to solve the challenging issues in multiuser secure data sharing scenario. These shared files over cloud have the hierarchical arrangement and multilevel hierarchical arrangement to store them. The scenario is evident in military and healthcare applications as it is mission critical and life critical data. However this architecture does not hold good in cloud application secure data sharing as the hierarchy is not maintained. In this work, an efficient file hierarchy attribute based algorithm for secure data sharing in multiuser cloud environment is proposed. The proposed method is secure and reliable under standard assumptions and follows the possible security measures. The work is tested and verified by performing user evaluation.
Keywords: Data Sharing; File Hierarchy; Ciphertext-policy