Favored Encryption Techniques for Cloud Storage

Data has been often offloaded to the cloud for high accessibility due to the advanced cloud infrastructure. However, we often ignore the safety of our data and completely rely on the cloud service provider. Data protection and encryption are the most important foundations in order to construct reliable and secure cloud environments. Recently, a lot of industries have used and developed various data encryption techniques that would be a fundamental solution to achieve data protection. This paper investigates current encryption and key management techniques used by the industry. We evaluate the popular techniques to find the elements that affect system performance. Finally, we compare various encryption techniques and suggest future directions for high performance and scalable encryption techniques.