“CLASS: Cloud Log Assuring Soundness and Secrecy” Scheme for Cloud Forensics

“CLASS: Cloud Log Assuring Soundness and Secrecy”  Scheme for Cloud Forensics

V. Vidya Sagar^1, Ch. Nagarjuna², M. Mohan Balajeeswar³, P. Siva Nageshwarao⁴

Assistant Professor, B. Tech Students

^* Department of Information Technology

^** ANDHRA LOYOLA INSTITUTE OF ENGINEERING & TECHNOLOGY

Abstract-User activity logs can be a valuable source of information in cloud forensic investigations; hence, ensuring the reliability and integrity of such logs is crucial. Most existing solutions for secure logging are designed for conventional systems rather than the complexity of a cloud environment. In this paper, we propose the Cloud Log Assuring Soundness and Secrecy (CLASS) process as an alternative scheme for the securing of logs in a cloud environment. In CLASS, logs are encrypted using the individual user’s public key so that only the user is able to decrypt the content. In order to prevent unauthorized modification of the log, we generate proof of past log (PPL) using Rabin’s fingerprint and Bloom filter. Such an approach reduces verification time significantly. Findings from our experiments deploying CLASS in OpenStack demonstrate the utility of CLASS in a real-world context

Keywords- Cloud Log, Cloud Computing, Virtual Machine, Cloud Server, Apache Tom cat, Java.