A Hybrid Approach and Implementation of a New Encryption Algorithm for Data Security in Cloud Computing

Cloud Computing offers dynamic allocation of resources for guaranteed and reliable services. Users store their data on a single virtual server, when user wants to access any data that data might be changed or modified by unauthorized people for malicious purpose because user’s do not have direct control of data So security is a big challenge for cloud computing and it is necessary to increase the security level in the cloud where the user should free from modification of data. We proposed a new encryption algorithm (ASIF Encryption Algorithm) for data security in cloud computing. This Algorithm performs multiple rounds based on the length of the key. The main feature of this algorithm is that it generates a random key in each round and also selects the key randomly in each round to encrypt the data. There are three main advantages of this model (i) it reduces the size of data and requires less storage space taken by existing encryption techniques (ii) reduce the congestion between server and user by fast transmission and (iii) provides better security because of random key selection. Many authors have given their ideas on data security in cloud but no one gives the full control to the user. This approach gives the full control to the user on their data and they can protect their data from unauthorized people. In Cloud Computing several organizations store their data on a single server so there is a very huge amount of data stored on a server. This approach is a hybrid approach and uses a data compression method to reduce the size of original data then encrypt data using ASIF Encryption Algorithm. So, this model is beneficial for users as well as a service provider.