Secure chat room industry

ABSTARCT :

Chat applications have become one of the most important and popular applications on smartphones. It has the capability of exchange text messages, images and files which it cost free for the users to communicate with each other. All messages must be protected. The aim of the paper is to propose chat application that provides End-to-End security that let safely exchange private information with each other without worrying about data. In addition to the protection of storage. A list of requirements to make secure chat application is presented in this paper and based on these requirements, the application was designed. The proposed chat application was compared with other popular applications based on those requirements as well as it has been tested as a proof for providing End-to-End security.

EXISTING SYSTEM :

? Many similar messengers exist, we limited our analysis to messengers of some notability. ? A secure channel with separate keys exists between each device pair of the communicating users. ? The sending device needs to know all encryption keys of the receiving devices and therefore the number of existing devices. ? This can be achieved e.g. by a password-based login or by having an existing device share an authentication token. ? In the device level approach, an existing device can add the new device to all conversations and groups.

DISADVANTAGE :

? Viber has privacy issues such as adding a friend without his knowledge or adding him to a group without his permission. ? Consumers demand better security and privacy in messaging Apps, software development companies have been attempting to address these issues. ? It has been highlighted that WeChat has major privacy issues and the safest option is to remove the App from your phone. ? This problem is not solved by simply using group messaging in all cases of the protocols and techniques that will be presented. ? This might pose a problem for some workloads, especially if data needs to be shared with same-owned devices and a large number of devices that belong to different users at the same time.

PROPOSED SYSTEM :

• The proposed architecture is designed to be Client-Server chat application. In client side, when a user sets up the application, the user either selects registration or log-in. • To analyze and evaluate proposed chat we have compared proposed chat with popular applications. • The aim of the paper is to propose chat application that provides End-to-End security that let safely exchange private information with each other without worrying about data. • The proposed chat application was compared with other popular applications based on those requirements as well as it has been tested as a proof for providing End-to-End security.

ADVANTAGE :

? The certain number of always online devices and accompanying performance losses are disadvantages for message exchange. ? The Messaging Layer Security (MLS) protocol allows for an efficient key rotation algorithm that scales logarithmically for a large number of partaking devices. ? A new key is derived via the key derivation function, the old key cannot be recovered easily and efficient attackers cannot recover the old keys for previous messages. ? There is a protocol in development that provides a method to efficiently update a group key.