The Research On Data Security And Privacy Issues In Hybrid Cloud Computing

IT technology is developed rapidly, since google proposed concept of cloudcomputing in2006, cloud computing has got a qualitative leap until now, a growingnumber of cloud services involve into our daily lives. Cloud computing has broughtus convenience as well as security risks, the accidents that the network serviceprovide business opportunities, data leakage, service interruptions and other accidents,so that most companies choose to give up the trust of public cloud, build their ownprivate cloud instead to store their confidential and sensitive data. However, privatecloud is incomparable public cloud in terms of scale, service capacity or openness. sohybrid cloud is the future trend of cloud computing model. Hybrid clouds combinepublic cloud’s advantage of economic and efficient, and private cloud’s advantage ofhigh security and low risk. So, the storage and migration of data security in hybridcloud is particularly important.The storage and migration of data security in Hybrid cloud is particularlyimportant. Using data encryption technology to protect the privacy of cloud datasecurity is a more feasible solution. However, current cryptographic protectionmechanisms does not take the performance of cloud services maintenance intoaccount, so to find a way to ensure data privacy in cloud computing while maintainperformance at the same time will be very meaningful for the safe development ofcloud computing.This paper presents a high data privacy protection and efficient mode based onhybrid cloud environments, divide the user’s data into privacy sensitive data andnon-sensitive data, store the user’s sensitive data in a private cloud. In order to protectthe privacy of sensitive user data, this model introduces a user identity authenticationalgorithm to identify the legal status and thus control the access of these privacysensitive data. In the hybrid cloud environment, companies store a lot of non-privatedata of private in the public cloud to save costs. Public cloud data should be stored incipher text, the user must go through to read and write the data encryption anddecryption, so finding a more appropriate protection strategy in providing dataprivacy protection while reducing the performance overhead is particularly important.This paper proposes an efficient privacy protection mechanism which can meet user’srequirements while maintaining the privacy of the system performance. The modelanalyses privacy level of user needs, security of quantitative data and the performance of encryption algorithms. Then gets a suitable combination of security according tothe results of the previous analysis and quantitative data, that is maximize systemperformance on the condition of security guarantance, Finally, by simulationexperiment to implement the model and do performance analysis. The model usessymmetric encryption algorithm to uploaded privacy sensitive data and encryptsymmetric key with asymmetric encryption algorithm to ensure the security of datatransmission.