Cryptography Challenges of Cloud Computing for E-Government Services

Cloud computing is the popular technology and seems to be very promisingfor the future trends. In the cloud computing, programs and data are stored andsometimes processed in cloud. So data and programs can easy be accessibleanywhere, anytime. Cloud computing is also a very applicable solution fore-government services due to cost effectiveness and efficiency of services.While it eliminates the need of maintaining costly computing facilities bycompanies and institutes, one of the barriers for cloud adoption is stillsecurity concerns. Out of cloud computing is depended upon internet, safetytopics such as, confidentiality, authentication, privacy, and data securitiesare the main concerns. In the cloud, users should search encryptioncapabilities for preserving and retaining their data. In the same time, theyhave to protect the functionality of the underlying cloud applications. Thereare many encryption algorithms to encrypt the data. However, there are newvarieties of cyber-attacks developed that threaten the data in the cloudinfrastructure. These attacks allow the encrypted data to be re-encrypted,making it incomprehensible by the original owner of the data so that it becomesimpossible for the user to decrypt it. This article is written to allow users tounderstand the working steps and challenges of the algorithms, comparisons ofthe algorithms and possible solutions for the resent threats in the cloudenvironment related with cryptography for e-government applications.