Providing Cloud Data Security By Using Proof of Past Log

We propose the Cloud Log Assuring Soundness and Secrecy (CLASS) process as an elective plan for the verifying of logs in a cloud domain. In CLASS, logs are scrambled utilizing the individual client's open key so just the client can unscramble the substance. So as to anticipate unapproved alteration of the log, we create evidence of past log (PPL) utilizing Rabin's unique mark and Bloom channel. Such a methodology lessens check time fundamentally. Discoveries from our trials conveying CLASS in Open Stack exhibit the utility of CLASS in a genuine setting