Secure File Storage on Cloud Using Hybrid Cryptography
Objective: To Achieve a secure plateform for storing of files on Cloud using Hybrid Cryptography.
To achieve the above goal, the following methodology needs to be followed:
Load the file on the server.
Dividing the uploaded file into N parts.
Encrypting all the parts of the file using any one of the selected algorithms (Algorithm is changed with every part in round robin fashion).
The keys for cryptography algorithms is then secured using a different algorithm and the key for this algorithm is provided to the user as public key.
After the above 4 steps you will have a N files which are in encrypted form which are stored on the server and a key which is downloaded as public key for decrypting the file and downloading it.
To restore the file, follow the following steps:
Load the key on the server.
Decrypt the keys of the algorithms.
Decrypt all the N parts of the file using the same algorithms which were used to encrypt them.
Combine all the N parts to form the original file and provide it to the user for downloading.
How to Run
NOTE: The project is based on Python 2.7.15 plateform running it on any other plateform might create some issues.
Step 1: Install Requirementspip install -r requirements.txt
Step 2: Run the applicationpython app.py
Step 3: Visit the localhost from your browser
Basic Requirement: Python Interpreter
Advantages: • The stored image file is completely secured, as the file is being encrypted not by just using one but three encryption algorithm which are AES, DES and RC6. • The key is also safe as it embeds the key in image using LSB. • The system is very secure and robust in nature. • Data is kept secured on cloud server which avoids unauthorized access.
Disadvantages: • Requires an active internet connection to connect with cloud server.
Application: Data security is a major priority. This system can be implemented into banking and corporate sectors to securely transfer confidential data.
