• R. AIESHA SIDDIQUA
• G. RAMANJINAMMA

Data security is the main concern in different type of applications from data storing in clouds to sending messages using chat. In order to provide security for data in cloud there are many types of techniques which are already proposed like AES, DES, RSA but in existing methods most of the time only single type of encryption was used either AES, OR DES, OR RSA based on user requirement but in this system main problem is each encryption is done using encryption keys if these keys are exposed in any case entire data is lost so we need effective method which can provide more security so in this project hybrid cryptography is used where existing encryption methods are used but three methods will be used. When user uploads data will split in to three parts and first part will be encrypted using AES , second part will be encrypted using DES, third part will be encrypted using RSA and these three encrypted files will be stored in cloud and keys used for AES, DES and RSA are stored in image using LSB steganography when use want to download total data from cloud first keys should be retrieved from image and these keys are used for decrypting data again by using AES, DES and RSA and final data is combined and stored in file. This method provides more security for data.

Cloud Security, AES, DES, RSA Encryption, Data Security

"DATA FILE SECURITY ON CLOUD USING MULTIPLE ENCRYPTION", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 6, page no.i547-i555, June-2022, Available :http://www.jetir.org/papers/JETIR2206866.pdf

"DATA FILE SECURITY ON CLOUD USING MULTIPLE ENCRYPTION", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 6, page no. ppi547-i555, June-2022, Available at : http://www.jetir.org/papers/JETIR2206866.pdf