![]() ![]() Besides, an effective access control over download request also needs to be considered so that Economic Denial of Sustainability (EDoS) attacks cannot be launched to hinder users from enjoying service. However, simply encrypting data (e.g., via AES) cannot fully address the practical need of data management. There are many literatures available to improve document security on cloud and most of the literatures proposed various data encryption techniques. However documents security is very important in cloud storage as cloud is a third party server which can be accessed by administrators. ![]() Cloud based data storage is becoming very popular nowadays as one can easily download any document from anytime and anywhere.
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