TEXT CRYPTOGRAPHY USING MULTIPLE ENCRYPTION ALGORITHMS BASED ON CIRCULAR QUEUE VIA CLOUD COMPUTING ENVIRONMENT

摘要

The tremendous development of communication technology, it has become necessary to use cloud computing systems that help us to store the data within a virtual structure, with the increasing volume of important data, the need to secure this data has become necessary through the use of diverse and complex techniques and methods to ensure integrity, confidentiality, and security. This paper presented a method to encrypt a message with different sizes in cloud computing environment by using several encryption algorithms such as: Advanced Encryption Standard AES, Advanced Encryption Standard RSA, and Advanced Encryption Standard Proposal AESP to make the method more secure and effective. which controlled by circular queue that is responsible for scheduling the implementation of the algorithm that defined by a secret code generated by Control Key, this a secret code is changed each time and with each message to be decoded later by using the same secret code to infer the algorithm that used in the encryption, in addition to the possibility of generating multiple random keys that are vary according to the encryption algorithm used. The experiment results shows that the proposed method has ability to encrypt and decrypt a text message with different sizes and short time by utilizing the properties of several algorithms that are scheduled on circular queue inside the cloud computing system, the proposed method consume time is less than other methods when it used alone, while the important criteria such as integrity, complexity, usability, and security are take into consideration to make the method more effective and efficient.