Enhancement of security mechanism for confidential data using AES-128, 192 and 256bit encryption in cloud

T Cloud computing is facing several issues regarding security. To provide security major companies are using Advance Encryption Standard (AES) encryption technology. AES is using mainly 3 types of encryption keys: 128bit key encryption, 192bit key encryption and 256bit key encryption which are using 10, 12 and 14 iterations respectively. All these are using the plain text block of size 128bit. In proposed architecture, the cloud user will be facilitated with all the 3 encryption techniques 128, 192 and 256bits to choose and based on the size of the data the encryption process can be done. By that they can make easy to store their data by using this three encryption techniques.