Security Issues Related to Data Storage in Cloud

Cloud computing represents today’s most exciting computing archetype. It gives computing via internet. Cloud systems can be used to enable data sharing capabilities and this can provide abundant of benefits to the user. It is the most important trend in cloud technology for allows users to access data expediently. Privacy and security is the big challenge for stored data in cloud. Most existing algorithms are low in level of security comparing with mCL-PKE (mediated Certificate Less – Public Key Encryption) scheme. This scheme gives protection via encryption and decryption to share sensitive data in public cloud without combining operation. The scheme has been introduced as efficient certificate less cryptography technique. It can solve key escrow and revocation problem in public key cryptography. The purpose of this paper is to review all the existing algorithms related to public key encryption and point out the best in efficiency and needed implementations. Keywords— Cloud computing, public cloud, public key cryptography, mcl-pke scheme.