Mobile Security Solution - Cloud Computing Major Project
- 1. Mobile Security Solution on Cloud Course Name: Cloud Computing Professor: Dr. Vasudeva Varma Project #8 Project Mentor: Prateek Mehta Team #31 Chinmay Patel (201405627) Tarun Gupta (201403002) Kavya Nerella (201301121) Sharvil Katariya (201301129)
- 2. Motivation “ A single CCTV camera with 640 * 480 image resolution set up for security purposes uploads 14GB of data per day.’’ Problem : This requires high bandwidth to send the data to server, high amounts of storage and compute power to store this data and retrieve when required. Time for a cheaper and better alternative !!
- 3. Our Solution Mobile Camera Instead of CCTV camera and Continuous Images Instead of Videos In brief, a Mobile Security Solution.
- 4. Introduction ➢ Fueled by the widespread adoption of mobile devices and the explosion of mobile applications, mobile device can be used as a cheaper alternative for CCTV cameras in security solutions. ➢ The project provides a cloud framework that allows mobile phone to post images on a regular interval. ➢ The project also provides a web interface for the easy filtering of the images.
- 6. Flow Diagram
- 7. Major Components of Application ➢ Android Application ➢ Web Application ➢ Rest Backend Service ➢ Database
- 9. Design Choice ● AMAZON AWS S3 ○ Cross Region Replication : CRR is an Amazon S3 feature that automatically replicates data across AWS regions. ○ Accessing Images quickly : Each image is stored as a Key, Value pair. ○ CloudFront CDN : We used Amazon CloudFront a CDN (Content Delivery Network) service to serve the images faster to the user. ● AMAZON AWS RDS ○ RDS provides supports ACID, i.e, Atomicity, Consistency, Isolation, and Durability. ○ Querying: Querying data in NoSQL Databases like DynamoDB is very limited, especially to query for non-indexed data. Also, complex querying can be easily done in RDS. ○ Backup: RDS has a slick backup when compared to the tedious backup procedure for NoSQL Databases like DynamoDB ○ Speed: RDS has better response time when compared with NoSQL Databases like DynamoDB. ○ Latency: On table creation, RDS allows us to use the table with negligible latency. Also, latency for read/write is better in the case of RDS.
- 10. Technology Stack ➢ Android SDK - Used to build an android application which captures images using mobile camera and uploads them on cloud. ➢ Google web Toolkit (GWT) - Provides web application interface to use REST API Service. ➢ Amazon S3 - Stores the captured images. ➢ Amazon RDS - Store the user and session tables. ➢ Amazon EC2 - Virtual server that runs tomcat. ➢ Amazon EBS - Provides the block storage for the EC2 instance. ➢ Amazon CloudFront - Content delivery network to boost the image retrieval.
- 11. Details of Workflow ➢ The table “Device Info” stored in Amazon RDS holds the information of a particular user / device. ➢ Another table “Session Info” holds the details of every session of every user. ➢ Amazon S3 storage stores the uploaded images in a hierarchy of device id followed by session id. ➢ By this time, we already have a hosted web server on a virtual machine running on cloud supported by Amazon EC2 (Elastic Compute Cloud). ➢ Later when required, a web page, which is the front end of the web application is used by security administrator to retrieve images from cloud. ➢ Amazon cloudfront acts as the backbone for the faster delivery of images. ➢ A REST backend service accepts requests from both android application and web page and responds to them.
- 12. Problems Faced ➢ We are unable to connect to the Amazon EC2 node as port 22 is blocked inside our college LAN network. We solved this problem using ssh tunneling. ➢ Sending images from mobile device using asynchronous background Task instead of making the post call for the image data on the UI Thread. ➢ We had to define appropriate security groups for different AWS services used such that our application can GET and POST data to these services.
- 13. Benefits of Application ➢ This application can be used by security personals for any public or private surveillance system. ➢ Provides low cost security solution because here we are using mobile device instead of costly CCTV cameras for surveillance. ➢ Storage requirements of storing a video is more than the storage requirement of storing an image. Thus the application will help to save a lot of storage space.
- 14. Thank You